Plain thrust bearing and combined device of plain thrust bearing and piston rod

FIELD: machine building.

SUBSTANCE: invention relates to machine building, namely, to a plain thrust bearing as well as to a combined device of the plain thrust bearing and a piston rod. The plain thrust bearing comprises a casing from artificial resin, a circular cover, a circular metal plate and a plain thrust bearing assembly. The casing includes a hollow cylindrical part with a cylindrical inner edge surface forming a through hole, a circular collar part which, as a solid unit, branches off in the radial direction outwards from the cylindrical outer edge surface and the hollow cylindrical part. The circular cover is fitted by a disk part with inner edge surface forming a through hole which is concentrical to the through hole in the bearing casing. The circular metal plate is fitted by an outer disk part turned in the radial direction outwards, the upper circular surface of the said disk part touches the lower circular surface of the disk part of the circular cover. The plain thrust bearing assembly is set between the bearing casing and the lower circular surface of the outer disk part of the circular metal plate. The combined device of the plain thrust bearing and the piston rod comprises the plain thrust bearing and the piston rod of a hydraulic damper.

EFFECT: improved design.

14 cl, 18 dwg

 

The technical field to which the invention relates

The present invention relates to thrust bearing, more specifically, to a thrust bearing, applicable in the suspension rack type (suspension MacPherson) four-wheeled vehicles, as well as to the combined device of the thrust sliding bearing and piston rod.

The level of technology

Usually suspension rack type used in the front wheel, four-wheeled vehicle and so constructed that the front Assembly with a hydraulic shock absorber in an outer cylinder, integrally formed with the main shaft, combined with a cylindrical spring. Among suspension this type of suspension exists, which, when in operation, steering rack assy rotates together with the cylindrical spring also rotates the piston rod of the strut Assembly, and the suspension of another type, in which the piston rod does not rotate. In some cases, the designs of both types between the device for mounting the rack Assembly onto the vehicle body and the upper nest of coil springs instead of the rolling bearing is used the thrust sliding bearing made of synthetic resin to provide a smooth rotation of the rack Assembly.

Documents known level t�hnike

Patent documents

Patent document 1: JP-UM-B-8-2500

Patent document 2: JP-A-8-326758

Patent document 3: JP-A-2003-269458

Patent document 4: JP-A-2004-225754

Patent document 5: JP-A-2004-263773

Patent document 6: JP-A-2008-202703

A brief summary of the invention

Problems, to solve which the invention is intended

It is known that the device for mounting the rack Assembly onto the vehicle body using the installation plate, on which rests one end of a piston rod of a hydraulic shock absorber, but when using such a device requires not only the installation plate on which rests the end of a piston rod, which complicates the design and increases the cost.

In this regard, in patent document 6 proposes the thrust bearing and the combined device of the thrust sliding bearing and piston rod, in which instead of the mounting plate of the device for mounting the rack Assembly onto the vehicle body rests one end of a piston rod, which allows to simplify the installation of the device and reduce the cost.

The proposed thrust bearing contains made of synthetic resin annular housing having an upper annular surface and the outer annular boundary surface; manufacturing�blenny from synthetic resin other annular body, superimposed on the said housing with the possibility of relative rotation about its axis and having a lower annular surface, opposite the upper annular surface; the node thrust sliding bearing which is located between the upper annular surface of the bearing housing and the lower annular surface of the other bearing housing and at least the bottom surface or top surface which is in sliding contact with at least the upper annular surface of the bearing housing or the lower annular surface of the other bearing housing; an upper annular cap having an inner annular edge of the bonding surface is meshed with the outer circumferential edge of the bonding surface of the bearing housing; and an annular metal plate located between the upper annular surface of the other bearing housing and the lower surface of the upper annular cap, wherein the bottom surface of the annular metal plate is brought into contact with the upper annular surface of the other bearing housing, and its upper surface comes into contact with the lower surface of the upper ring of the lid. This thrust bearing annular metal plate has an inner annular boundary surface, having a smaller dia�ETP, than the internal diameter of the inner annular edge surfaces of the two bearing blocks and the upper annular cap, thereby effectively overcome the above disadvantage.

However, because a flat annular metal plate is proposed thrust sliding bearing is designed for installation on the threaded part of the piston rod through the nut, the annular metal plate through the piston rod can act with great force, capable of deforming the annular metal plate, whereby upon relative rotation of the piston rod occurs abnormal noise.

In addition, the drawbacks of the thrust sliding bearing is the large number of component parts, but also weight gain and height of such a thrust sliding bearing, resulting in increases of the installation of the device on which rests one end of a piston rod, which requires a large space for installation.

The present invention was developed taking into account the above features, and it is based on the task of creating a thrust sliding bearing and the combined device of the thrust sliding bearing and piston rod with the possibility of preventing deformation of the annular metal plates�, attenuation of abnormal noise due to relative rotation of the piston rod and reduce the height by reducing the number of component parts even when exposed to great efforts on the annular metal plate.

Means of solving problems

The thrust sliding bearing according to the present invention comprises a synthetic resin housing having a hollow cylindrical portion with a cylindrical inner edge surface, forming a through hole, the annular comb-like portion, integrally extending radially outward from the cylindrical outer edge surface of the hollow cylindrical portion, an annular protruding portion, integrally protruding in a radial direction outward from the bottom side cylindrical outer edge surface of the circular comb portion, the protruding tubular portion formed on the upper annular surface of the annular protruding portion and formed through its cylindrical inner regional outer surface of the circular recessed portion, interacting with a cylindrical outer edge surface of the annular comb-like portion and the upper annular surface of the annular protruding part, and the ring siteplease the protruding portion, the protruding radially outwards from the cylinder�historical outer edge surface of the tubular protruding part; an annular cap having a disc portion with an inner edge surface, forming a through hole, concentric with the through hole in the bearing housing and with the upper annular surface and a lower annular surface, a tubular portion formed integrally with the disk portion and having an inner edge surface, and siteplease the protruding portion, protruding in the radial direction inward from the inner boundary surface of the tubular portion and serves to gear siteplease protruding part of the bearing housing; an annular metal plate having a facing in a radial outward direction of the outer disk portion, the upper annular surface which is in contact with the lower annular surface of the disk portion of the annular cap, and facing in the radial direction inside of the inner disc portion formed integrally with the outer disk part and fits in the through hole formed by the inner edge surface of the disk portion of the annular cap; and the node thrust sliding bearing which is located between the bearing housing and the lower annular surface of the outer disk portion of the annular metal plate and attached to the annular metal plate is the ability to rotate in a certain direction around the axis to�of Cusa bearing relative to the bearing housing, the inner disk portion has a cylindrical inner edge surface having a smaller diameter than the diameter of the inner edge surface of the hollow cylindrical part of the bearing housing, and forming a through hole, concentric with both the through holes and knot thrust sliding bearing has an upper annular surface of the bearing housing, an annular deep groove formed on an inner edge side of the upper annular surface, at least one annular shallow groove surrounding a deep annular groove and having a smaller depth than the annular deep groove, and contains a lubricant, which is filled with deep annular groove and the annular shallow groove.

Since the annular metal plate thrust sliding bearing according to the present invention has an inner disc portion formed integrally with the outer disk part and fits in the through hole formed by the inner boundary surface of the annular cap, the inner disk portion serves as a rib for the outer disk portion. As a result, even when exposed to great efforts on the annular metal plate by means of a piston rod can be prevented deformation of the annular metal plate and OS�ablates abnormal noise due to relative rotation of the piston rod, the reason for this may be the deformation of the annular metal plate.

In addition, since the node thrust sliding bearing according to the present invention has an upper annular surface of the bearing housing, an annular deep groove formed on an inner edge side of the upper annular surface, at least one annular shallow groove surrounding a deep annular groove and having a smaller depth than the annular deep groove, and contains a lubricant, which is filled with deep annular groove and the annular shallow groove by reducing the number of component parts can be reduced height of the thrust sliding bearing, and thereby reduced space for installation of the thrust sliding bearing, and reduced overall costs.

The bearing housing according to the present invention can be made of a thermoplastic synthetic resin, such as polyacetylene resin, a polyamide resin and a thermoplastic polyester resin, and in one of the preferred embodiments an annular cover made of a thermoplastic synthetic resin, such as polyacetylene resin, a polyamide resin and a thermoplastic polyester resin, but alternatively can be made of thermoplastic �sinteticheskoi resin, reinforced inorganic filler, such as glass fiber, glass powder, glass fraction and carbon fiber, or an organic filler such as aramid fiber. In one of preferred embodiments of the annular metal plate made of steel plate, such as stainless steel, etc., but alternatively may be made of an alloy of non-ferrous metals, such as copper alloy, titanium alloy, etc., wherein such annular metal plate is preferably manufactured by stamping an ordinary hot-rolled steel plate (SPHC).

The node thrust sliding bearing can have multiple annular shallow grooves having the same depth. In addition, at least one annular shallow groove of the thrust bearing Assembly slip can be a ring-a wide shallow groove having a greater radial width than the radial width of the annular deep groove. In addition, the thrust bearing Assembly slides on the upper annular surface of the bearing housing may come into contact with the lower annular surface of the outer disk portion of the annular metal plates rotatably in a direction around the axis of the bearing housing, or may contain from�otoplenie made of synthetic resin annular sheet, fit on the upper annular surface and covering the lubricant-filled annular shallow groove and a deep annular groove. If the node thrust sliding bearing includes an annular sheet, the upper annular surface of the annular sheet may come into contact with the lower annular surface of the outer disk portion of the annular metal plates rotatably in a direction around the axis of the bearing housing. In addition, the node thrust sliding bearing may be of the electrolytic coating of at least one lower annular surface of the outer disk portion of the annular metal plate. Moreover, at least the inner disk portion of the annular metal plate may have at least the upper annular surface or the lower annular surface covered with plastic soft metal such as zinc, copper or tin.

In accordance with the present invention between the lower annular surface of the outer disk portion and the upper annular surface of the bearing housing of the thrust bearing Assembly slip is at least one of the following: lubricant made of a synthetic resin annular sheet and electrolytic coating, which gives the upper annular surface� the bearing housing of the thrust bearing Assembly slip the ability to rotate in a certain direction around the axis of the bearing housing relative to the lower annular surface of the outer disk portion through at least one of the following: lubricants made from synthetic resin annular sheet and electrolytic coating, resulting in a thrust bearing Assembly slip ring attaches the metal plate the ability to rotate relative to the bearing housing in a certain direction around the axis of the bearing housing.

In one of the embodiments of the annular cover has a connecting portion located between the disk portion and the tubular part and having a cylindrical inner edge surface, round bottom annular surface continuously connected to the cylindrical inner edge surface, and a hemispherical outer boundary surface with an arcuate cross section, and the outer disk portion of the annular metal plate has a cylindrical outer edge surface, opposite in the radial direction of the cylindrical inner edge surface of the fitting.

The annular metal plate may have an inclined connecting portion, placed between the outer disk and inner part of the disk part is continuously connected to the inner disk part and extending diagonally upward from the inner edge of the outer disk portion, and protruding downwards frequent�, forming integrally with the outer disk part hanging down from the outer edge side of the lower annular surface of the outer disk portion and covering the upper edge portion of the outer edge surface of the circular comb.

In one of preferred embodiments of the annular cover has a connecting portion located between the disk portion and the tubular part and having a hemispherical outer edge surface and a hemispherical inner edge surface having an arcuate cross section, while the outer disk portion of the annular metal plate has a hemispherical outer boundary surface, opposite the hemispherical inner boundary surface of the fitting ring of the lid and the inner disk portion of the annular metal plate has a bottom annular surface, continuously connected to the lower annular surface of the outer disk portion and located at the same level with the bottom annular surface of the outer disk.

In one of preferred embodiments the combined device of the thrust sliding bearing and a piston rod or a combination device for use in the suspension rack-mounted type four-wheeled vehicle with�refer to the thrust sliding bearing according to any one of the above-described variants of implementation; and piston rod of a hydraulic shock absorber, the piston rod has a large diameter portion that fits in the through hole formed by the inner edge surface of the hollow cylindrical part of the bearing housing, a small diameter portion having a smaller diameter than the large diameter portion, integrally formed with a portion of large diameter and fits in the through hole formed by the cylindrical inner edge surface of the inner disk portion of the annular metal plate, and a threaded portion formed on the small diameter side, and the inner disk portion of the annular metal plate is sandwiched between the large diameter part and small diameter part of the piston rod of the annular stepped surface and the annular surface of the nut screwed on the threaded part.

If at least the inner disk portion of such annular metal plate of at least the upper annular surface or the lower annular surface that is sandwiched an annular surface of the nut and the annular stepped surface between the large diameter part and small diameter part of the piston rod, covered with plastic soft metal such as zinc, copper or tin, at least one pair of corresponding surfaces between the annular stepped p�surface and the annular surface of the nut, on the one hand, and the upper annular surface and the lower annular surface of the inner disk portion, on the other hand, can come mainly in full contact with each other, which allows to avoid local contact and to distribute the voltage when it is constructed piston rod in the axial direction. The result can be prevented the occurrence of damage of the inner disk parts, such as cracks.

Advantages of the invention

In accordance with the present invention can be created by the thrust bearing and the combined device of the thrust sliding bearing and piston rod with the possibility of preventing deformation of the annular metal plate, reduce the abnormal noise due to relative rotation of the piston rod, which may be a deformation of the annular metal plate, and reduce the height by reducing the number of component parts even when exposed to great efforts on the annular metal plate by means of a piston rod.

Brief description of the drawings

Fig.1 is a view in front sectional view of one embodiment of the present invention,

Fig.2 shows in a plan view illustrated in Fig.1 of a variant of implementation,

Fig.3 is a view in cross-section in �the direction of the arrows along the line III-III in Fig.2 is illustrated in Fig.1 of a variant of implementation,

Fig.4 shows a plan view of the bearing housing illustrated in Fig.1 embodiment, the implementation

Fig.5 is a view in cross-section in the direction of the arrows along the line V-V in Fig.4 the bearing housing illustrated in Fig.1 embodiment, the implementation

Fig.6 shows a partially enlarged view in cross section of the bearing housing illustrated in Fig.1 embodiment, the implementation

Fig.7 shows a bottom view of the bearing housing illustrated in Fig.1 embodiment, the implementation

Fig.8 shows a plan view of the annular cover is illustrated in Fig.1 embodiment, the implementation

Fig.9 shows a view in cross-section in the direction of the arrows along the line IX-IX in Fig.8 ring cap illustrated in Fig.1 embodiment, the implementation

Fig.10 shows a partially enlarged view in cross section of the annular cap illustrated in Fig.1 embodiment, the implementation

Fig.11 shows a plan view of the annular metal plate illustrated in Fig.1 embodiment, the implementation

Fig.12 shows a view in cross-section in the direction of the arrows along the line XII-XII in Fig.11 of the annular metal plate illustrated in Fig.1 embodiment, the implementation

Fig.13 shows a partially enlarged view in cross section of the annular metillicakonitina illustrated in Fig.1 embodiment, the implementation

Fig.14 shows a view in cross section of one of the variants of implementation, which uses a suspension rack type as illustrated in Fig.1 embodiment of the,

Fig.15 shows a view in cross section of another embodiment of the present invention,

Fig.16 shows a plan view of the sheet illustrated in Fig.15 variant of implementation,

Fig.17 shows a view in cross section of another embodiment of the present invention, and

Fig.18 shows a view in cross section of one of the additional embodiments of the present invention.

Method of carrying out the invention

Next will be described in more detail the embodiment of the invention on the example of preferred embodiments illustrated in the drawings. It should be noted that the present invention is not limited to these options implementation.

Fig.1-13 shows the thrust bearing 1 slide containing made of a synthetic resin housing 16 having a hollow cylindrical portion 4 with the cylindrical inner edge surface 3, which forms a through hole 2, the annular comb-like part 6, integrally extending radially outward from the cylindrical outer edge surface 5 of the hollow cylindrical part 4,the annular protruding portion 8, integrally protruding in a radial direction outward from the bottom side cylindrical outer edge surface 7 of the annular comb-like part 6, the tubular protruding portion 13, integrally made on the upper annular surface 9 of the annular protruding portion 8 and forming an annular outer recessed portion 12 which opens onto the upper annular surface 11 and communicates with a cylindrical outer edge surface 7 of the annular comb-like portion 6 and the upper annular surface 9 of the annular protruding part 8, ring siteplease the protruding portion 14, integrally projecting radially outward from the cylindrical outer edge surface of the tubular protruding part 13, the annular protruding portion 15, integrally formed is made on the inner side edge surface 3 of the hollow cylindrical portion 4; an annular cap 28 having a disk portion 24 with the inner edge surface 22, forming a through hole 21, concentric with a through hole 2 in the housing 16 of the bearing, and the lower annular surface 23 is continuously connected with the lower edge of the inner edge surface 22, the tubular portion 26 is integrally made with the disk part 24 and having an inner edge surface 25, formed of a truncated conical surface�TEW, and siteplease the protruding portion 27, as one protruding radially inward from an inner edge surface 25 of the tubular portion 26 and is able to elastically grasp siteplease the protruding portion 14 of the housing 16 of the bearing; an annular metal plate 34 having a facing in a radial outward direction of the outer disk portion 32 with the upper annular surface 31 that is in contact with the lower annular surface 23 of the disk portion 24 of the annular cap 28, and facing in the radial direction inside the inner disk portion 33 formed integrally with the outer disk part 32 and fits in the through hole 21, formed by the inner edge surface 22 of the disk portion 24 of the annular cap 28; and the node 36 of the thrust sliding bearing located between the housing 16 and lower bearing annular surface 35 of the outer disk portion 32 of the annular metal plate 34 and attached to the annular metal plate 34 the ability to rotate relative to the housing 16 of the bearing in the direction R about the axis O of the housing 16 of the bearing.

In addition to the inner boundary surface 3 and an outer edge surface 5 of the hollow cylindrical portion 4 of the housing 16 of the bearing of thermoplastic synthetic resin, such as polyacetylene resin, polyamide resin and polyester resin (polyb�deletereport), has a bottom annular surface 40 and many of the lower grooves 43 spaced from each other in the direction R, and the lower annular surface 41 of the annular comb-like part 6, which is located higher than the lower annular surface 40, and the lower annular surface 42 of the annular protruding part 8, which is flush with the lower annular surface 41, provided with a plurality of lower recesses 44, each of which is radially adjacent to the bottom of the recess 43 and is deeper than the bottom of the recess 43.

The annular cover 28 of thermoplastic synthetic resin, such as polyacetylene resin, polyamide resin, polyester resin (polybutylene terephthalate) or a thermoplastic synthetic resin reinforced with an inorganic filler such as glass fiber, glass powder, glass fraction and carbon fiber, or an organic filler such as aramid fiber, has a connecting portion 54, which is located between the disk part 24 and the tubular part 26 and has a cylindrical inner edge surface 51, a lower annular surface 52 is continuously connected to the lower edge of the cylindrical inner edge surface 51, and a hemispherical outer edge surface 53 with an arcuate cross-section. In addition to the inner boundary surface�knosti 22 and the lower annular surface 23 of the disk portion 24 has an upper annular surface 55, the outer edge of which is continuously connected to the upper edge of the hemispherical outer edge surface 53, with the inner marginal surface 22 of the disk portion 24 has a truncated conical surface 56, and the tubular portion 26 in addition to the inner edge surface 25 has a bottom annular surface 58 and a cylindrical outer edge surface 57, the upper edge of which is continuously connected to the lower edge of the hemispherical outer edge surface 53.

The annular metal plate 34, preferably made by stamping an ordinary hot-rolled steel plate (SPHC), in addition to the outer disk portion 32 and the inner disk portion 33 has an inclined connecting portion 61 located between the outer disk part 32 and the inner disk part 33 is continuously connected to the inner disk part 33 and extending diagonally upward from the inner edge of the outer disk portion 32 and the annular protruding downward portion 62 formed integrally with the outer disk part 32, hanging down from the outer edge side of the lower annular surface 35 of the outer disk portion 32 and covering the upper edge portion of the outer edge surface 7 of the annular comb-like part 6.

The outer disk portion 32 extending in the axial direction between the hollow qi�andrijeski part 4 and the annular comb-like part 6, on the one hand, and disk part 24, on the other hand, also has a cylindrical outer edge surface 63, opposite in the radial direction of the cylindrical inner edge surface 51 of the connecting part 54. Inclined connecting portion 61 has an inclined outer edge surface 64 opposing in the radial direction of the truncated conical surface 56 of the annular cap 28, and an inclined inner edge surface 65 parallel to the inclined outer edge surface 64. The inner disk portion 33, which is placed in the through hole 21 has an upper annular surface 67, continuously connected to the upper edge of the inclined outer edge surface 64 and facing up in the through hole 21, the lower annular surface 68 parallel to the upper annular surface 67 and a cylindrical inner edge surface 70 having a smaller diameter than the diameter of the inner boundary surface 3 of the hollow cylindrical portion 4 of the housing 16 of the bearing, and forming a hole 69 concentric with both the through-holes 2 and 21.

The annular metal plate 34 is preferably made by stamping an ordinary hot-rolled steel plate (SPHC). In this case, at least described later vernatalia surface 67 and the lower annular surface 68 (clamped surface) of the inner disk portion 33, which are clamped to the annular surface of the nut and the annular stepped surface between the large diameter part, a small diameter piston rod, preferably covered with plastic soft metal such as zinc, copper or tin. When using such a metallic coating annular stepped surface of the piston rod and the annular surface of the nut, on the one hand, and the upper annular surface 67 and the lower annular surface 68 of the inner disk portion 33, on the other hand, are mostly in full contact with each other, which allows to avoid local contact and to distribute the voltage when it is constructed piston rod in the axial direction. In the result, prevents damage, such as cracking of the inner disk portion 33 and the outer disk portion 32 is integrally formed with an internal disk part 33.

Node 36 of the thrust sliding bearing has an upper annular surface 82 of the hollow cylindrical portion 4, i.e. the upper annular surface 81 of the housing 16 of the bearing, which is in sliding contact with the lower annular surface 35 of the outer disk portion 32 in the direction R, and the upper annular surface 83 of the annular comb-like portion on a level with the upper annular surface 82; an annular deep groove 84 n� upper annular surface 82 with the inner edge of the upper annular surface 81; annular shallow grooves 85 and 86 on the upper annular surfaces 82 and 83 with a radially outer side of the annular deep groove 84, surrounding the annular deep groove 84 and having a similar, but lesser depth than the annular deep groove 84; and contains lubricant 87, such as grease, which fills the annular deep groove 84 and an annular shallow grooves 85 and 86. Annular shallow groove 85 is made on the upper annular surface 82, and an annular shallow groove 86 is made on the upper annular surface 83 of the radially outer side annular shallow grooves 85 and surrounds the annular shallow groove 85. The node 36 of the thrust sliding bearing, the upper annular surface 81 which is distributed lubricant 87 comes into contact with the lower annular surface 35 of the outer disk portion 32 of the annular metal plate 34 for rotation in the direction R around the axis O.

In the thrust bearing 1 slide the housing 16 of the bearing ring and the cover 28 are superposed on each other and connected to each other through the annular metal plate 34 sandwiched between them in the axial direction (vertical direction) by an elastic coupling (snap connection) saralaya of the protrusion 27 and siteplease protruding part 14 for Fund� use the flexibility of the synthetic resin. During rotation of the annular metal plate 34 relative to the housing 16 of the bearing around the axis O in the direction R, the slide in the direction R between the upper annular surfaces 82 and 83 of the node 36 of the thrust sliding bearing which is located between the housing 16 and lower bearing annular surface 35 of the outer disk portion 32 of the annular metal plate 34, and the lower annular surface 35 of the outer disk portion 32 of the annular metal plate 34, which is in contact with the upper annular surfaces 82 and 83, and thereby the rotation of the annular metal plate 34 relative to the housing 16 of the bearing around the axis O in the direction R with a low friction torque.

As shown in Fig.14, the thrust bearing 1 slide applies when the suspension rack 93 type comprising a hydraulic shock absorber (not shown) with a piston rod 91 and a cylindrical spring 92 surrounding this hydraulic shock absorber is mounted on the vehicle by using a distribution device 94.

In addition to hydraulic shock absorber and coil springs 92 suspension rack 93 the type of vehicle, such as four-wheeled vehicles, includes upper connector spring 95, which includes one end of the coil springs 92, and the Ogre�Uchitel 96 aftershocks, surrounding the piston rod 91. The installation device 94 includes an elastic element 98 of rubber having embedded in it a metal core 97 and 99 of the spacer that fits between the upper nest of the spring 95 and the annular comb-like part 6 of the housing 16 of the bearing, on the one hand, and the relevant lower annular surfaces 41 and 42 of the annular protruding part 8, on the other hand. The thrust bearing 1 slide by means of spacers 99 is placed between the resilient member 98 of the adjusting device 94 and the upper socket 95 suspension springs 93 column type. In addition, the lower end of the hollow cylindrical portion 4 is inserted into the Central through hole 100 of the upper socket 95 of the spring and thus is set to the preset position of the upper socket 95 of the spring relative to the direction perpendicular to the axis O, i.e., in the radial direction, and the inner edge surface of the spacer 99 is in contact with the outer edge surface 5 of the hollow cylindrical part 4. The inner boundary surface of the elastic element 98, covering the thrust bearing 1 slide, in contact with the hemispherical outer edge surface 53, the upper annular surface 55 and a cylindrical outer edge surface 57 of the annular cap 28.

The piston rod 91 includes a portion 111 of large diameter, passing che�go through hole 2, part 112 of small diameter, having a smaller diameter than the part 111 of large diameter, integrally made with part 111 of large diameter and passing through the through hole 69 in the annular metal plate 34, and the threaded portion 113, which is made on the part of small diameter 112. The inner disk portion 33 of the annular metal plate 34 is clamped annular stepped surface 114 and an annular surface 116 between the annular stepped surface 114 located between the part 111 of the large diameter part 112 small diameter of the piston rod 91, on the one hand, and the annular surface 116 of the nut 115, screwed on the threaded portion 113, on the other hand.

The outer boundary surface 121 of part 111 of large diameter rotatably in the direction R in contact with the inner edge surface 3 of the housing 16 of the bearing, forming a through hole 2, and the outer edge surface of the nut 115, in contact with the inner annular edge surface 122 of the elastic element 98, screwed on the threaded portion 113 without the possibility of rotation in the direction R relative to the elastic element 98 and is attached to the piston rod 91. The elastic member 98 holds the annular cover 28 through the annular metal plate 34, the inner disk portion 33 which is clamped an annular stepped surface�STU 114 and the annular surface 116 without the possibility of rotation in the direction R relative to the piston rod 91.

When in the process of steering a cylindrical coil spring 92 describes the combined device of the thrust bearing 1 slide and piston rod 91 is rotated around the axis O in the direction R, the housing 16 of the bearing similarly rotates in the direction R relative to the annular metal plate 34. This rotation of the housing 16 of the bearing is ensured by the sliding contact in the direction R between the upper annular surfaces 82 and 83 of the node 36 of the thrust sliding bearing and lubricant 87, such as grease, which is distributed to the upper annular surfaces 82 and 83 and fills the annular deep groove 84 and an annular shallow grooves 85 and 86, on the one hand, and adjoining them the lower annular surface 35 of the outer disk portion 32 of the annular metal plate 34, on the other hand, whereby the steering is done without resistance.

Since the housing 16 of the thrust bearing 1 slide for rotation in the direction R relative to the lower annular surface 35 of the annular metal plate 34 extends along the upper annular surfaces 82 and 83 of the node 36 of the thrust sliding bearing with distributed thereon lubricant 87, the thrust bearing 1 slide can be constructed from three parts,�luchshih the housing 16 of the bearing, the annular metal plate 34 and an annular cover 28. As a result by reducing the number of component parts can be reduced height of the thrust bearing 1 slide and space for installation of the thrust bearing 1 slide and reduced overall costs. In addition, one end of a piston rod 91 can rest on the annular metal plate 34 and the device for installation of the suspension rack 93 type on the vehicle body can be eliminated with the installation element, on which rests one end of a piston rod 91, which allows to simplify the installation of the device and reduce costs.

In addition, since the annular metal plate 34 of the thrust bearing 1 slide has an inner disk portion 33, through an inclined connecting portion 61 formed integrally with the outer disk part 32 and fits in the through hole 21 formed by the inner edge surface 22 of the annular cap 28, the inner disk portion 33 serves as a stiffener to the outer disk portion 32. The result can be prevented deformation of the annular metal plate 34 and to weaken the abnormal noise due to relative rotation of the piston rod 91 in the direction R, which may be a deformation of the annular metal plate 34, even when near�under great efforts on the annular metal plate 34 by means of a piston rod 91.

In addition, the wall thickness of the annular comb-like portion 6 and the annular protruding part 8, integrally formed on the underside of the outer edge surface 7 of the annular comb-like part 6 of the thrust bearing 1 slide, can be unified through the bottom of the recesses 43 and 44 on the lower annular surface 41 of the annular comb-like portion 6 and the lower annular surface 42 of the annular protruding part 8, which allows to overcome the forming defects and deviations in size, are caused by the uneven thickness of the molding. However, in cases where it is not specifically required, the lower recesses 43 and 44 may be missing.

In addition, since the annular protruding portion 62 of the thrust bearing 1 slide adapted to grasp the outer edge surface 7 of the annular comb-like portion 6 of the housing 16 of the bearing, to maintain the relative radial position of the annular metal plate 34 and the housing 16 of the bearing.

Since the thrust bearing 1 slide at least the upper annular surface 67 and the lower annular surface 68 of the inner disk portion 33, clamped annular surface 116 of the nut 115 and the annular stepped surface 114 between the part 111 of the large diameter part 112 small diameter piston rod 1, covered with plastic soft metal such as zinc, copper or tin, the annular stepped surface 114 and the annular surface 116, on the one hand, the upper annular surface 67 and the lower annular surface 68 of the inner disk portion 33, clamped annular stepped surface 114 and an annular surface 116, on the other hand, can come mainly in full contact with each other, which allows to avoid local contact and to distribute the voltage when it is constructed piston rod in the axial direction 91. The result can be prevented the occurrence of damage to the inner disk portion 33, such as cracks.

As shown in Fig.15 and 16, in addition to the upper annular surface 81, an annular deep groove 84, the annular shallow grooves 85 and 86 and the lubricant 87 node 36 of the thrust sliding bearing may contain made of synthetic resin annular sheet 131, located on the upper annular surface 81 and covering the lubricant 87, such as grease, which is filled annular grooves 84, 85 and 86. The annular sheet 131 is placed between the upper annular surface 81 and the lower annular surface 35 of the outer disk portion 32 of the annular metal plate 34, with the upper annular surface 132 of the annular sheet 131 SpryAssets� with the lower annular surface 35 of the outer disk portion 32 of the annular metal plate 34, and the lower annular surface 133 of the annular sheet 131 is in contact with the upper annular surface 81 for rotation in the direction R, respectively. In such a node 36 of the thrust bearing annular metal plate 34 is attached to the ability to rotate relative to the housing 16 of the bearing in the direction R about the axis O of the housing 16 of the bearing through at least one of the following: sliding annular sheet 131 in the direction R of the bottom annular surface 133 relative to the upper annular surface 81 or sliding of the annular sheet 131 in the direction R of the upper annular surface 132 relative to the lower annular surface 35 of the annular metal plate 34, wherein the lubricant 87 filling the annular deep groove 84 and an annular shallow grooves 85 and 86 and is covered by an annular sheet 131, adapted to withstand the axial load from the annular sheet 131.

The annular sheet 131 is preferably made of a synthetic resin comprising at least polyacetylene resin, polyamide resin, polyester resin, polyolefin resin, polycarbonate resin and a fluoropolymer, and may have an inner annular edge surface 134, inner diameter which exceeds the outer diameter of the annular protruding portion 15 of the housing 16 of the bearing, and the outer edge�th surface 135, the outer diameter of which is smaller than the outer diameter of the outer edge surface 7 of the annular comb-like part 6, and can have an axial thickness of from 0.05 mm to 1.0 mm.

When relative rotation of the annular metal plate 34 in the direction R about the axis O relative to the housing 16 of the thrust bearing 1 slide, shown in Fig.15 and 16, the sliding synthetic resin between the upper annular surface 132 of the annular sheet 131 and the lower annular surface 35 of the outer disk portion 32 of the annular metal plate 34 or the sliding synthetic resin between the lower annular surface 133 of the annular sheet 131 and the upper annular surface 81 of the housing 16 of the bearing through the lubricant 87, preferably, the first slide type that allows for relative rotation of the annular metal plate 34 in the direction R relative to the housing 16 of the bearing around the axis O with extremely low friction torque. In addition, since the annular sheet 131 small thickness from 0.05 mm to 1.0 mm or so is simply placed in the previously described node 36 of the thrust bearing, the thrust bearing 1 slide, shown in Fig.15 and 16, may also be reduced weight, reduced installation space and reduced overall costs.

In each described above resistant Podshipnik slip knot 36 thrust sliding bearing has an annular deep groove 84 and an annular shallow grooves 85 and 86, but, as shown in Fig.17, the node 36 of the thrust sliding bearing alternatively may include an annular deep groove 84, the annular wide shallow groove 136 greater width than the radial width of the annular deep groove 84, the annular shallow grooves 85 and 86, and lubricant 87 filling the annular deep groove 84 and the annular wide shallow groove 136. Node 36 of the thrust sliding bearing shown in Fig.17, may also contain made of synthetic resin shown in Fig.15 and 16 an annular sheet 131 that fit on the upper annular surface 81 and covering the lubricant 87, such as grease, which fills the annular deep groove 84 and the annular wide shallow groove 136.

In addition to the upper annular surface 81, an annular deep groove 84 and an annular shallow grooves 85 and 86 of the node 36 of the thrust bearing 1 slide, shown in Fig.1-13 has an electrolytic coating that is applied to the lower annular surface 35 of the outer disk portion 32, such electrolytic coating may preferably be applied by cathodic electrodeposition resin dye for the purpose of obtaining a resin coating as an electrolytic coating with anti-friction properties, but also may be another electro�ardenia.

Such electrolytic coating can be applied to the node 36 of the thrust sliding bearing is the thrust bearing 1 slide, shown in Fig.15 and 16 or 17.

In the thrust bearing 1 slide annular cover 28 has a disk portion 24, the tubular portion 26 is integrally made with the disk part 24, siteplease the protruding portion 27 protruding radially inward from an inner edge surface 25 of the tubular portion 26, and the connecting portion 54 located between the disk part 24 and the tubular part 26, and the annular metal plate 34 has an outer disk portion 32, the inner disk portion 33 formed integrally with the outer disk part 32, and an inclined connecting portion 61, located between the outer disk part 32 and the inner disk part 33. However, as shown in Fig.18, alternatively, the annular cover 28 may be constructed using thin-walled disk portion 141 having a lower annular surface 23 and the cylindrical inner edge surface 22, forming a through hole 21, a thin-walled tubular part 142, for one made with disk part 141 and having an inner edge surface 25, formed of a truncated conical surface, and siteplease the protruding portion 27 protruding in radiation�Lincoln toward the inside of the inner edge surface 25 of the tubular portion 142, and the annular coupling portion 145 that fits between the disk part of the tubular part 141 and 142 and having a hemispherical outer edge surface 143 and a hemispherical inner edge surface 144 having an arcuate cross section. In addition, the annular metal plate 34 can be constructed using an outer disk portion 32, in addition to having an upper annular surface 31 and the lower annular surface 35 of the hemispherical outer edge surface 146 with an arcuate cross-section, opposite the hemispherical inner edge surface 144 with an arcuate cross-section of the connecting portion 145 and continuously connected to the upper annular surface 31, and using a thick-walled inner disk portion 33, in addition to having a top annular surface 67 and the inner edge surface 70 forming a through hole 69, the lower annular surface 68, continuously connected to the lower annular surface 35 of the outer disk portion 32 and located at the same level with the bottom annular surface 35 of the outer disk portion 32, and is having an inclined outer edge surface 64 of the cylindrical outer edge surface 147, opposite the cylindrical inner edge surface 22.

In thrust bearings�ke 1 slide, shown in Fig.18, upper annular surface 82 of the hollow cylindrical part 4 of the internal boundary surface 3 of the hollow cylindrical portion 4 is integrally formed an annular protruding portion 15, with its upper annular surface is located lower than the lower annular surface 68 with an annular gap relative to the lower annular surface 68, the lower annular surface 35 of the outer disk portion 32 integrally formed she made down the portion 62, hanging down from the outer edge side of the lower annular surface 35 of the outer disk portion 32, its outer boundary surface in contact with the hemispherical inner edge surface 144 of the connecting portion 145 for hemispherical inner edge surface 144, and due to the contact of the outer edge surface protruding downward portion 62 with a hemispherical inner edge surface 144 of the annular metal plate 34 is able to maintain its radial position relative to the annular cover 28.

Any node thrust bearing, including the node 36 of the thrust sliding bearing shown in Fig.1-13, the node 36 of the thrust sliding bearing shown in Fig.15 and 16, the node 36 of the thrust sliding bearing shown in Fig.17, and the node thrust bearing 36 eddy slide, riders slide�tion with the above-described electrolytic plating, can also be used in the thrust bearing 1 slide, shown in Fig.18.

In addition, any of the thrust bearing 1 slide, shown in Fig.15 and 16, Fig.17 and Fig.18, the upper annular surface 67 and the lower annular surface 68 of the inner disk portion 33, clamped annular surface 116 of the nut 115 and the annular stepped surface 114 between the part 111 of the large diameter part 112 small diameter of the piston rod 91 may be covered with plastic soft metal such as zinc, copper or tin.

Description of position

1 - thrust bearing

2 - through hole

3 - internal boundary surface

4 is a hollow cylindrical portion

5 - the outer boundary surface

6 - ring comb-like portion

7 - outer boundary surface

8 - annular protruding portion

9 - the upper annular surface

10 - internal boundary surface

11 - the upper annular surface

12 - outer recessed portion

13 - tubular protruding portion

14 - saralaya standout

15 is an annular protruding portion

16 is a bearing housing

21 - through hole

22 - internal boundary surface

23 - the lower annular surface

24 disc portion

25 - the inner boundary surface

26 - tubular part

27 - saralaya �speaker part

28 - ring cover

31 - the upper annular surface

32 - outer disk portion

33 - the inner disk portion

34 is an annular metal plate

35 - the lower annular surface

36 is a thrust bearing Assembly slip

1. Thrust bearing containing:
made of a synthetic resin housing having a hollow cylindrical portion with a cylindrical inner edge surface, forming a through hole, the annular comb-like portion, integrally extending radially outward from the cylindrical outer edge surface of the hollow cylindrical portion, an annular protruding portion, integrally protruding in a radial direction outward from the bottom side cylindrical outer edge surface of the circular comb portion, the protruding tubular portion formed on the upper annular surface of the annular protruding portion and formed through its cylindrical inner regional outer surface of the circular recessed portion, interacting with a cylindrical outer edge surface of the annular comb-like portion and the upper annular surface of the annular protruding part, and the ring siteplease the protruding portion, the protruding radially outward from the cylindrical outer�th boundary surface of the tubular protruding part,
an annular cap having a disc portion with an inner edge surface, forming a through hole, concentric with the through hole in the bearing housing and with the upper annular surface and a lower annular surface, a tubular portion formed integrally with the disk portion and having an inner edge surface, and siteplease the protruding portion, protruding in the radial direction inward from the inner boundary surface of the tubular portion and serves to gear siteplease protruding part of the bearing housing
an annular metal plate having a facing in a radial outward direction of the outer disk portion, the upper annular surface which is in contact with the lower annular surface of the disk portion of the annular cap, and facing in the radial direction inside of the inner disc portion formed integrally with the outer disk part and fits in the through hole formed by the inner edge surface of the disk portion of the annular cover, and
the node thrust sliding bearing which is located between the bearing housing and the lower annular surface of the outer disk portion of the annular metal plate and attached to the annular metal plate is the ability to rotate in a certain direction around �C of the bearing housing relative to the bearing housing
the inner disk portion has a cylindrical inner edge surface having a smaller diameter than the diameter of the inner edge surface of the hollow cylindrical part of the bearing housing, and forming a through hole, concentric with both the through holes and knot thrust sliding bearing has an upper annular surface of the bearing housing, an annular deep groove formed on an inner edge side of the upper annular surface, at least one annular shallow groove surrounding a deep annular groove and having a smaller depth than the annular deep groove, and contains a lubricant, which is filled with deep annular groove and the annular shallow groove.

2. The thrust sliding bearing according to claim 1, wherein the thrust bearing Assembly slip ring contains many fine grooves having the same depth.

3. The thrust sliding bearing according to claim 1 or 2, wherein at least one annular shallow groove is a circular wide shallow groove having a greater radial width than the radial width of the annular deep groove.

4. The thrust sliding bearing according to any one of claims.1-2, in which the thrust bearing Assembly slides on the upper annular surface of the bearing housing caprices�is with the lower annular surface of the outer disk portion of the annular metal plates rotatably in a direction around the axis of the bearing housing.

5. The thrust sliding bearing according to any one of claims.1-2, in which the thrust bearing Assembly slip contains made of synthetic resin annular sheet that fits on the upper annular surface and covering the lubricant-filled annular shallow groove and a deep annular groove.

6. The thrust sliding bearing according to claim 5, wherein the thrust bearing Assembly slides on the upper annular surface of the annular sheet is in contact with the lower annular surface of the outer disk portion of the annular metal plates rotatably in a direction around the axis of the bearing housing.

7. The thrust sliding bearing according to any one of claims.1-2, in which the node thrust sliding bearing has an electrolytic coating applied to the lower annular surface of the outer disk portion of the annular metal plate.

8. The thrust sliding bearing according to any one of claims.1-2, wherein at least the inner disk portion of the annular metal plate has at least upper annular surface or the lower annular surface, each of which is covered with plastic soft metal such as zinc, copper or tin.

9. The thrust sliding bearing according to any one of claims.1-2, in which the annular cover has a fit between e� disk part and a tubular part and having a cylindrical inner edge surface, round bottom annular surface continuously connected to the cylindrical inner edge surface, and a hemispherical outer boundary surface with an arcuate cross section, and the outer disk portion of the annular metal plate has a cylindrical outer edge surface, opposite in the radial direction of the cylindrical inner edge surface of the fitting.

10. The thrust sliding bearing according to any one of claims.1-2, in which the annular metal plate has an inclined connecting portion, placed between the outer disk and inner part of the disk part is continuously connected to the inner disk part and extending diagonally upward from the inner edge of the outer disk portion, and an annular protruding down part forming one piece with the outer disk part hanging down from the outer edge side of the lower annular surface of the outer disk portion and covering the upper edge portion of the outer edge surface of the circular comb.

11. The thrust sliding bearing according to any one of claims.1-2, in which the annular cover has a connecting portion located between the disk portion and the tubular part and having a hemispherical outer edge surface and a hemispherical inner�element boundary surface, having an arcuate cross section, while the outer disk portion of the annular metal plate has a hemispherical outer boundary surface, opposite arcuate in cross section with a hemispherical inner boundary surface of the fitting ring of the lid and the inner disk portion of the annular metal plate has a bottom annular surface, continuously connected to the lower annular surface of the outer disk portion and located at the same level with the bottom annular surface of the outer disk.

12. The combined device of the thrust sliding bearing and piston rod, comprising:
the thrust sliding bearing according to any one of claims.1-11, and
and piston rod of a hydraulic shock absorber, the piston rod has a large diameter portion that fits in the through hole formed by the inner edge surface of the hollow cylindrical part of the bearing housing, a small diameter portion having a smaller diameter at the large diameter portion, integrally formed with a portion of large diameter and fits in the through hole formed by the cylindrical inner edge surface of the inner disk portion of the annular metal plate, and a threaded portion formed on the small diameter side, and �Utrennyaya disk portion of the annular metal plate is sandwiched between the large diameter part and small diameter part of the piston rod of the annular stepped surface and the annular surface of the nut, screwed on the threaded part.

13. The combined device of the thrust sliding bearing and piston rod according to claim 12, wherein at least the upper annular surface or the lower annular surface of at least the inner disk portion of the annular metal plate that is sandwiched an annular surface of the nut and the annular stepped surface between the large diameter part and small diameter part of the piston rod, covered with plastic soft metal such as zinc, copper or tin.

14. The combined device of the thrust sliding bearing and piston rod according to claim 12 or 13, characterized in that is used in the suspension rack-mounted type four-wheeled vehicle.



 

Same patents:

FIELD: machine building.

SUBSTANCE: plain thrust bearing from the synthetic resin. The bearing contains top casing out of the synthetic resin, bottom casing, thrust bearing assembly from the synthetic resin, outside resilient sealing element and internal resilient sealing element. The thrust bearing assembly from the synthetic resin is installed between top casing and bottom casing.

EFFECT: increased bearing protection against dust and dirty water ingress.

9 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: invention relates to the plain thrust bearings from synthetic resin, namely, to the plain thrust bearings used in post-type suspensions (McPherson suspension) for four-wheeled vehicles, and also to the mounting design of the post-type suspension with the plain thrust bearings. The plain thrust bearing (1) comprises a lower housing (2) from synthetic resin, upper housing (3) from synthetic resin laying on the lower housing (2), and an insert (4) from synthetic resin placed between the housings (2, 3). The upper housing (3) is laid on the lower housing (2) in such a manner that the tubular outer surface (34) of an internal tubular suspended part (29) of the circular bearing parts (25) is located opposite to the tubular internal surface of the larger diameter of the circular bearing part (11) of the housing (2) with a clearance between them. Meanwhile the circular lower end surface of the part (29) is located opposite to the surface with a circular shank shoulder of the part (11) with the clearance between them. The cylindrical internal surface (31) of the external tubular suspended part (32), with the walls wider, than ones of the part (29) in a radial direction, forms a sliding contact with the cylindrical outer surface (9) of the part (11). The internal tubular vertical part (38) of the wall is located in the circular part (18) with the recess. The circular hook part (44) is elastically seats in a circular gripping protruding part (20), as a result of which between the elastically seated part and the smoothly contacting part of the surface (9) an sealing part of the labyrinth type is formed with reference to the cylindrical internal surface (31) due to that the part (38) of the wall is located in the part (18), and the tubular protruding part (19) and the part (20) are located in the circular part (42) with the recess.

EFFECT: creation of plain thrust bearing with a possibility of resolving the problem with the space for mounting.

2 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: invention relates to a plain thrust bearing from synthetic resin, namely, to a plain thrust bearing used in post-type suspensions (McPherson suspension) for four-wheeled vehicle as a plain thrust bearing. The thrust plain bearing (1) comprises an upper casing (2) from synthetic resin, a lower casing (3) from synthetic resin overlapped onto the upper casing (2) and able of rotation around the axis (O) along the circle (R) in respect to the upper casing (2), a unit (5) of the thrust plain bearing from synthetic resin placed in the annular space (4) between the upper casing (2) and the lower casing (3), and a sealing element (8) from synthetic resin to seal the respective opposite protruding-to-outside ends of the gap (6) on the internal periphery side and of the gap (7) on the external periphery side in the radial direction (A) between the upper casing (2) and the lower casing (3), therewith one end with the hole of the gap (6) and the gap (7) respectively is communicated with the annular space (4).

EFFECT: design of a thrust plain bearing with more efficient assembly and replaceability, providing for additional rise of durability and sealability.

4 cl, 24 dwg

Sliding element // 2521854

FIELD: machine building.

SUBSTANCE: invention relates to sliding element used, for example, as a plain bearing in internal combustion engines, plain bearing of crankshafts, piston rings or piston skirts. A sliding element comprises a bottom layer and at least one layer made from the sliding facilitating material applied onto the bottom layer. The layer of sliding facilitating material consists of varnish containing at least one binder able of linking or at least one high-melting thermoplastic material, and containing Fe2O3. The share of Fe2O3, in terms of total volume of material in the sliding facilitating layer, amounts to 0.1 to 15% by volume. The microroughness of the bottom layer Rz falls within the range from 1 to 10 mcm.

EFFECT: development of a sliding element with its coating subject to high loads having a plastic matrix containing Fe2O3 and being highly adhesive to the bottom layer at simultaneous increase of maximal load.

28 cl, 2 tbl

Bush (versions) // 2516930

FIELD: machine building.

SUBSTANCE: invention relates in general to corrosion resistant bushes which can be used in automotive industry, namely, for hinges of doors, bonnets and engine compartments, seats, steering columns, flywheels, bearings of balancer shaft etc. as well as in other industry branches. The bush comprises: a load-bearing underlayer (102) having the first basic surface, the second basic surface and edges; a sliding layer (110) connected to the first surface; a corrosion resistant layer (114) connected to the second surface and passing so that to cover the edges of the load-bearing underlayer (102). The corrosion resistant layer (114) comprises a layer of epoxy resin (118) including a hardener. Distinction of the bush as per the second version consists in the fact that its nominal corrosion resistance measured according to ISO 9227:2006 amounts to at least 120 hours.

EFFECT: production of an improved bush requiring no maintenance, having extended service life without maintenance and increased corrosion resistance.

14 cl, 10 dwg

FIELD: transport.

SUBSTANCE: proposed bearing 1 has top housing 3 made from synthetic resin with seat surface 10 for mount device 9 arranged on car body side and annular bottom surface 2, bottom housing 5 made from synthetic resin and annular thrust plain element 6 from synthetic resin. Annular top surface 4 is made integral with bottom housing 5 opposite surface 2, and seat surface 25 of suspended cylindrical spiral spring 7. Said housing is fitted on top housing 3 to rotate about axis O of housing 3 in direction Z. Thrust plain element 6 is arranged in annular clearance between surface 2 and surface 4 and features annular thrust surface sliding to thrust against surface 2 or surface 4. Mount surface 10, working surface and part of surface 25 where against thrusts spring 7 are fitted on bearing axle 1.

EFFECT: efficient bearing to reduce load from car body.

8 cl, 11 dwg

FIELD: transport.

SUBSTANCE: plain thrust bearing (1) made of synthetic resin contains upper body (100) of synthetic resin, lower body (200) of synthetic resin and plain thrust bearing made of synthetic resin assembly (300), fitted between bodies (100) and (200). If to take radial length of body (100) from axis (o) to outer edge surface (303) of the assembly (300), located in lower ring cavity (205) as (r), and thickness of inner edge surface of upper ring plate section (102) as (t), on the upper surface (108) of body (100) there is ring flat surface (109) with circular outer edge, the radius (R) of which, if to take axis (o) of body (100) as centre of circumference, is equal to R=r±t. The thrust bearing (1) is located between lower surface of mounting element at the side of vehicle body and upper surface of spring upper socket, subtending to this lower surface. Due to this, the surface (109) only contacts with lower surface of mounting element at the side of vehicle body.

EFFECT: creation of plain thrust bearing which even under action of variable load such as tilt on mounting element at the side of vehicle body provides smooth operation of steering without interference of upper and lower bodies; higher operation efficiency due to possibility to maintain friction characteristics for a long time.

9 cl, 13 dwg

Plain bearing // 2463492

FIELD: machine building.

SUBSTANCE: proposed bearing comprises shaft journal 1 and sleeve 2 made from polymer material enveloping eccentrically said shaft 1 Besides, bearing comprises, at least, one extra heat transmitting body 3 in contact with shaft journal and provided with cooling system 5. Note here that said heat transmitting body 5 may be made of solid of revolution, e.g. cylinder.

EFFECT: longer life.

2 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: proposed material comprises rolling layer with slippery material, stable-size bearing layer and elastic layer. Elastic layer comprises elastomer produced by the process including the following steps. Using rolling layer with slippery material, stable-size bearing layer and elastic layer, every said layer representing sheet material, particular, continuous strip. Jointing slippery layer to said bearing layer and elastic layer to bearing layer on the side opposite the slippery layer. Or using slippery layer, bearing layer and elastic layer. Note here that said layer represents sheet material, particular, continuous strip. Besides, it comprises jointing slippery layer to said bearing layer and elastic layer to bearing layer on the side opposite the slippery layer.

EFFECT: 3D-geometry bearings with nice noise- and vibration killing properties.

17 cl, 15 dwg

FIELD: mechanics.

SUBSTANCE: invention relates to a plain thrust bearing from synthetic resin, in particular, for thrust bearing suspension rack-type four-wheeled vehicle. The bearing has an upper housing (100), comprising an radial flat spot (102), lower body (200) superimposed on the body (100) with possibility of rotation around the axis of the housing (100) and contains an radial flat spot (202), opposite the site (102 ), and an radial groove (204), performed at the site (202), which is surrounded by the first (203) and second (205) concentric radial projection housing (200). The bearing assembly also includes a node of (300) plain thrust bearing made of disc (304), which is placed in the radial groove (204), is a sliding contact with an radial flat spot (102) and has a circular hole (101), done in the central part . At the same node (300) mounted in an radial groove (204) with an radial gap (AI) between the inner peripheral surface (301) round hole (302) and the outer peripheral surface (207) of the first projection (203) and the radial gap (A2) between the outer peripheral surface (303) disk (304) and an inner peripheral surface (208) of the second projection (205). Node (300) is located in a groove (204) so that its upper surface (305) protrudes from the grooves opening (204) so as to enter into contact slider with the bottom surface (105) housing (100), and its lower surface (306) is in contact slider with the bottom surface (209) groove (204). Housing (100) is combined with the housing (200) by the elastic landing on the housing (200). The sum (A) of the volume of radial gaps (AI) and (A2) is less than the amount (B) of the node part (300), which protrudes from the hole of the groove (204).

EFFECT: time preservation of slipping characteristics such as low coefficient of friction and wear resistance.

7 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: plain thrust bearing from the synthetic resin. The bearing contains top casing out of the synthetic resin, bottom casing, thrust bearing assembly from the synthetic resin, outside resilient sealing element and internal resilient sealing element. The thrust bearing assembly from the synthetic resin is installed between top casing and bottom casing.

EFFECT: increased bearing protection against dust and dirty water ingress.

9 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: invention relates to the plain thrust bearings from synthetic resin, namely, to the plain thrust bearings used in post-type suspensions (McPherson suspension) for four-wheeled vehicles, and also to the mounting design of the post-type suspension with the plain thrust bearings. The plain thrust bearing (1) comprises a lower housing (2) from synthetic resin, upper housing (3) from synthetic resin laying on the lower housing (2), and an insert (4) from synthetic resin placed between the housings (2, 3). The upper housing (3) is laid on the lower housing (2) in such a manner that the tubular outer surface (34) of an internal tubular suspended part (29) of the circular bearing parts (25) is located opposite to the tubular internal surface of the larger diameter of the circular bearing part (11) of the housing (2) with a clearance between them. Meanwhile the circular lower end surface of the part (29) is located opposite to the surface with a circular shank shoulder of the part (11) with the clearance between them. The cylindrical internal surface (31) of the external tubular suspended part (32), with the walls wider, than ones of the part (29) in a radial direction, forms a sliding contact with the cylindrical outer surface (9) of the part (11). The internal tubular vertical part (38) of the wall is located in the circular part (18) with the recess. The circular hook part (44) is elastically seats in a circular gripping protruding part (20), as a result of which between the elastically seated part and the smoothly contacting part of the surface (9) an sealing part of the labyrinth type is formed with reference to the cylindrical internal surface (31) due to that the part (38) of the wall is located in the part (18), and the tubular protruding part (19) and the part (20) are located in the circular part (42) with the recess.

EFFECT: creation of plain thrust bearing with a possibility of resolving the problem with the space for mounting.

2 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: thrust bearing unit consists of a thrust plate and a thrust journal (7). The thrust plate is composed of housing (1) with cylindrical recess and flat bottom formed by circular ledge (2) along the perimeter of the housing (1). At the bottom of the cylindrical recess there are sectors of the elastic gasket (3) with the gasostatic bearing sectors (5) supported on them, bearings, which are forming, respectively, the elastic gasket ring (3) and the ring from non-magnetic material. The side of sectors (5), facing towards the thrust journal (7), is fitted with a recess with flat bottom formed by beads (8) along the perimeter of the sector (5). In the recess of each sector (5) several sectorial permanent magnets magnetised in an axial direction, and contacting with them sectorial permanent magnets, magnetised in a longitudinal direction are evenly distributed along a circle and fixed. The cross section of cover plates (6) is T-shaped. The external surface of sector permanent magnets form a single plane facing towards the thrust journal (7), made from non-magnetic material, with forming with it of working clearance (12). In volume of sectors (5) the system of interconnected channels of small diameter with a possibility of feeding in it of compressed air from the external source is implemented, the output holes of which are connected with viaholes (20, 21), made in sectorial permanent magnets interconnecting with the working clearance (12).

EFFECT: ensuring of high bearing capacity of a thrust bearing assembly in an operating mode, reliable start of turbine, decrease of deformation of clearance in the thrust bearing assembly as a result of high pressure of gas pressurisation, damping of oscillations of turbine machine rotor, caused by axial gas dynamic forces of the turbine and compressor.

6 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: invention relates to the thrust journal bearings, which one work surface is out of siliconised graphite (or other antifriction material with similar characteristics), and can be used in assemblies of the electric machines and hydraulic machines with large-size thrust bearings (diameter up to 900mm), mainly in motors driving the main circulating pump units of the reactor plants, for example at NPS. The feature of the mentioned axial bearing is that the support disc if made with alternating supporting shoulders and grooves from the side looking towards a set of sectors out of antifriction material. On outside and internal diameters of the supporting disc the seating surfaces are made, the outside and internal rings are installed in them and secure the sectors via the resilient elements. The sectors locking against rotation relatively to the supporting disc is ensured by the intermediate planks installation between the sectors, they are locked by the plank axle in holes of the supporting disc. The sectors are made with steps for outside and internal rings, the sector top part has radial roundings, and bottom part has grooves ensuring mutual securing. Lead-in edge of the sector has shape similar to parabolical shape. Cooling and lubrication are performed via the alternating channels created by the planks, sectors, outside and internal rings.

EFFECT: decreasing of possibility to damage the antifrictional components out of siliconised graphite due to bend stresses and thermal deformations due to non-uniformity of heat removal from the contact zone when solid gusset is used; improvement of the cooling and lubricating water circulation on crown surface of the axial journal bearing; improvement of feasibility of the gusset manufacturing and assurance of its reparability; reliability improvement; fire risk decreasing; rotation prevention of the set of sectors over the supporting disc.

3 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: thrust bearing assembly consists of axial bearing and thrust bearing (7) made of nonmagnetic material. Axial bearing is composed of housing (1) with cylindrical recess and flat bottom formed by circular ledge (2) extending over perimeter of housing (1). Resilient washer (3) is arranged on cylindrical recess bottom with ring-shape gas bearing resting thereon and made of nonmagnetic material and separated to sectors (5) by radially directed straps (6) of the same thickness secured to housing (1). Flange (8) making the recess is arranged at perimeter of sector (5), on the side facing the thrust bearing (7). Recess of every sector (5) locked are sector poles of high magnetic permeability material with sector permanent magnets (9, 10) with tangential opposite magnetisation located there between. Cross-section of washers (6) is shaped to T shape, their flanges being arranged to engage the radial collars (8). Magnets (9, 10) are shaped to trapezoids with their wide base facing the recess surface while narrow base of every magnet (9, 10) contacts with wedge (14) made of strip of nonmagnetic material and rigidly secured with adjacent sector poles (12, 13). Outer surface of wedges (14) and poles (12, 13) make a single plane to form therewith a working clearance (15). Inside said sectors (5) a system of communicating channels (18) is made to feed compressed air therein from external source, system outlets being connected with through holes in poles (12, 13), connected in their turn, with working gap (15).

EFFECT: higher bearing capacity under working conditions, reliable start and outage of turbomachine.

7 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: invention relates to a plain thrust bearing from synthetic resin, namely, to a plain thrust bearing used in post-type suspensions (McPherson suspension) for four-wheeled vehicle as a plain thrust bearing. The thrust plain bearing (1) comprises an upper casing (2) from synthetic resin, a lower casing (3) from synthetic resin overlapped onto the upper casing (2) and able of rotation around the axis (O) along the circle (R) in respect to the upper casing (2), a unit (5) of the thrust plain bearing from synthetic resin placed in the annular space (4) between the upper casing (2) and the lower casing (3), and a sealing element (8) from synthetic resin to seal the respective opposite protruding-to-outside ends of the gap (6) on the internal periphery side and of the gap (7) on the external periphery side in the radial direction (A) between the upper casing (2) and the lower casing (3), therewith one end with the hole of the gap (6) and the gap (7) respectively is communicated with the annular space (4).

EFFECT: design of a thrust plain bearing with more efficient assembly and replaceability, providing for additional rise of durability and sealability.

4 cl, 24 dwg

Gas turbine engine // 2529294

FIELD: engines and pumps.

SUBSTANCE: first cup-like journal of the first magnetic bearing assembly directed by its bottom to turbine wheel is fitted on engine cylindrical bush adjoining the turbine wheel. Note here that second cup-like journal of the second radial thrust magnetic bearing directed with its bottom to compressor wheel is fitted on the shaft free end. First and second thrust gas bearings, centrifugal compressor wheel and equaliser washer are fitted thereon and locked by nut. Every radial magnetic bearing comprises thin-wall sleeve made of nonmagnetic material. Sleeve outer surface has poles arranged regularly in circle and shaped to trapezoid-like strips made of material with high magnetic permeability. Trapezoid-like strips made of magnetic material arranged between the latter to contact with said poles by side faces. The latter magnetised over axial length in tangentially opposite direction. Wide cross-section base of magnetic strips face the thin-wall surface. Wedges made of strips of nonmagnetic materials are arranged on narrow base side rigidly secured flush with side faces of the poles. Said wedges contact with magnetic strip to make the cylindrical surface extending in working clearance of radial magnetic bearing. Circular ledges of the first and second cup-like journals are fitted in circular recesses. Said ledges are furnished with ring of high-strength fibre on binder made of solidifying synthetic resin. Said ledges are fitted in appropriate ring grooves made in spacer arranged between turbine and compressor casings. Note here that one of ring grooves is opened to compressor while another to turbine. Corrugated sleeve with lengthwise crimps is arranged between the surface of ring grooves and made of resilient material. Inner surfaces of cup-like journal is coated with copper layer and finished to high purity. Thrust magnetic bearing comprises toe bearing made of nonmagnetic material and arranged in cylindrical bore of cup-like journal. Sectors of poles of material with high magnetic permeability are secured between journal bottom and toe bearing surface. Sectors of permanent magnets and sectors of poles are composed by trapezoidal-section strips in contact by side edges. Note here that magnetic sectors face the cylindrical recess bottom by their section wide base. Their narrow bases are covered by flat wedges of nonmagnetic material. Their end surfaces are rigidly secured with end surfaces of appropriate poles to make flat surface which makes with cup-journal the working clearance of thrust magnetic bearing. Radial and thrust magnetic bearings are made of magnetic material with Courier point not lower than 900°C. Elastic washer made of resilient material deformed to make circular crimps is arranged between toe bearing and bottom of bore of both magnetic bearings. Magnetic radial and thrust bearings are locked in place. Axial gas-dynamic bearing comprises spacer and seal with spacer ring arranged there between. Note that first and second thrust gas bearings separated by common toe bearing are fitted there between. Radial gas-dynamic bearing is arranged in clearance between the spacer cylindrical cavity and sleeve surface facing the latter.

EFFECT: reliable starting at low temperatures, higher reliability at high dynamic loads and operating efficiency.

2 cl, 6 dwg

Thrust bearing unit // 2529070

FIELD: machine building.

SUBSTANCE: thrust bearing unit consists of a thrust plate and a thrust journal (8). The thrust plate is formed by a casing (1) fitted by a cylindrical groove with flat bottom which is provided by a circular protrusion along the casing (1) perimeter. A resilient gasket (3) is set on the cylindrical groove bottom and a gasostatic bearing rests against it and is made as a ring divided into sectors (5) by oriented metal nonmagnetic patchs (7) coupled with the thrust plate casing. On the side turned to the thrust journal (8) the sector (5) perimeter is fitted by a bead (9) providing for the groove. Gasostatic bearing (6) steps made from antifriction material are fixed in the groove of each sector (5). The patch (7) cross section is of T-shape, the tables of the patchs (7) are made so that radial beads (9) of the sectors (5) can be engaged. External surface of the gasostatic bearing (6) steps is turned to the thrust journal (8) and form an operating clearance with it. In the sectors there provided is a system of communicating channels (12) with the possibility of supplying compressed air to it from an external source, the outlet holes of the system are communicated with the feeding holes (18) in the gasostatic bearing steps, through holes communicating with the operating clearance.

EFFECT: increased carrying capacity of a thrust bearing unit in the operation mode with reduced friction losses in it, decreased deformation of clearance in the thrust bearing unit resulting from the high-pressure of gas blowing, damping of vibrations of a turbomachine rotor caused by axial gas dynamic forces of the turbine or compressor, reliable start-up and shutdown of the turbomachine.

3 cl, 3 dwg

Gas-dynamic bearing // 2496032

FIELD: machine building.

SUBSTANCE: gas-dynamic bearing includes rod, and housing, in which annular carrier card (3) with elastic petals (4) overlapping each other is arranged. Sector slots (5) are made in card (3) opposite petals (4). Carrier card (3) with petals (4) is made of set of plate-like shaped elements (6) attached to each other, for example by spot welding at four points (7). Sizes of plate-like shaped elements (6) are chosen so that solid annular carrier card (3) with petals (4) can be formed at their attachment to each other.

EFFECT: simpler design of gas-dynamic bearing.

5 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: plain thrust bearing from synthetic resin has upper housing (100) from synthetic resin, lower housing (200) from synthetic resin and assembly (300) of thrust bearing from synthetic resin, which is placed between housings (100) and (200). At boundaries of a sliding strip between upper surface of lower annular plate-like section (202) of housing (200), which restricts the lower surface of lower annular groove (204) and lower surface of upper annular plate-like section (102) of housing (100) on one side, and upper surface and lower surface of assembly (300) on the other side, which come into sliding contact with upper and lower surfaces, there is silicon grease based on silicon oil and having kinematic viscosity coefficient at 25°C of not less than 0.0001 m2/s and not more than 0.5 m2/s and containing a thickener to maintain working penetration of not less than 200 and not more than 400. The above silicon oil is silicon oil that contains an additive or modified silicon oil.

EFFECT: creation of plain thrust bearing that is capable of preserving low friction coefficient and preventing microslipping phenomenon at sliding during a long period of time, which allows preventing abnormal friction noise referred to microslipping phenomenon.

12 cl, 9 dwg, 2 tbl

Thrust bearing // 2269682

FIELD: mechanical engineering.

SUBSTANCE: invention can be used in turbomachines, for instance, in turbocompressors, and also as repair set. Proposed thrust bearing has housing, bushing with bead freely fitted into housing space and fixed from rotation by section of bead in form of polyhedron and arranged in congruent cavity on end face of housing pointed to polyhedron. Longitudinal lubrication grooves are made in space of bushing whose spaces are connected through channels with outer surface of bearing housing. Bushing is made sectional, consisting of two parts, each provided with bead with fixing section in form of polyhedron. Both end faces of bearing housing are provided with cavities congruent to fixing sections of bead. Clearance is left between end faces of bushing arranged in space of bearing housing.

EFFECT: increased damping properties of bearing in axial and radial directions.

4 cl, 2 dwg

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