Plain thrust bearing and mounting structure of post-type suspension with plain thrust bearing

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

 

The technical field to which the invention relates.

The present invention relates to a thrust bearing made of synthetic resin, more accurately, the thrust sliding bearing, applicable in the suspension rack type (suspension MacPherson) four-wheeled vehicles, as well as to the mounting structure of the suspension rack type using the thrust sliding bearing.

The level of technology

Usually suspension rack of the type used in the front wheel four-wheel vehicle and constructed so that the strut Assembly with a hydraulic shock absorber in the outer cylinder, made in one piece with the main shaft, combined with a cylindrical spring. Among the suspensions of this type (1) there is a suspension, in which the axis of the cylindrical spring has actively shifted relative to the axis of the rack so as to provide a smooth sliding of the piston rod of the shock absorber built into the rack, and (2) there is a construction of another type, in which a cylindrical spring mounted so that its axis coincides with the axis of the rack. In both structures between the element for mounting the rack Assembly to the vehicle body and the upper slot of the cylindrical spring is bearing to ensure smooth rotation when the wizard Assembly rotates together with the cylindrical spring in the process of steering control.

In addition, it is required that this bearing was allowed load from the vehicle body (axial load) and gradually allowed radial load from the described construction of the suspension, i.e., in the above-mentioned structure of the first type radial load return force of the cylindrical spring in the direction of the axis of the suspension even in a stationary position as the axis of the cylindrical spring is offset from the axis of suspension, and in the case of structures of the second type radial load resulting from the mismatch of the axes, because of the complexity of manufacturing such a way that the axis of the suspension and the axis of the cylindrical spring coincided with each other.

The documents of the prior art

Patent documents

Patent document 1: JP-A-2002-257146

Patent document 2: JP-A-2004-225754

Summary of the invention

Task to decide which is the invention of

As a thrust sliding bearing, which gradually allows the above-described axial load and radial load, it was suggested that the thrust sliding bearing having the lower body of a synthetic resin, the upper body is made of synthetic resin, superimposed on the lower body disc liner made of synthetic resin that fit between the upper and lower housings and radial liner made of synthetic resin, fit between the upper and lower housings (patent document 1 and patent document 2).

However, in some cases between the installation element on the side of the vehicle body and the top of the nest, which is placed thrust sliding bearing, it is impossible to provide space for radial surface mounting. In addition, there is an economic problem, which is increasing spending by using two bearings, that is, thrust bearings and radial bearings.

The present invention was created taking into account the above characteristics, and it is based on the task of creating a thrust sliding bearing with the possibility of solving the problem space for installation, as well as economic problems by reducing the radial dimension by performing radial part of the sliding bearing inside the upper and lower housings without the use of a radial sliding bearing.

Means of solving problems

The thrust sliding bearing according to the present invention has the lower body of a synthetic resin, the upper body is made of synthetic resin placed on the lower casing, and insert thrust bearing made of synthetic resin that fit between the upper and lower housings, the lower housing with the ring contains a reference part, which has an annular upper surface and a circular bottom surface, and a tubular inner surface of the small diameter tubular inner surface of large diameter and a cylindrical outer surface located between the annular upper surface and a circular bottom surface, and a first annular portion with the notch on the ring top surface; a hole of small diameter, formed by a tubular inner surface of the small diameter annular supporting portion and facing the annular lower surface of the annular support portion; a hole of large diameter formed tubular inner surface of the large diameter annular supporting portion and facing the annular upper surface of the annular supporting part; surface with an annular shoulder, continuously passing from the annular inner peripheral end of the tubular inner surface of small diameter and continuously passing from the annular outer peripheral end of the tubular inner surface of large diameter; an annular protruding portion which protrudes radially outwards from the lower end of the cylindrical outer surface; a tubular protruding portion, which is located on the annular upper surface of the annular protruding part and through its the second tubular inner surface forms a second annular portion with a notch together with a cylindrical outer surface and the annular top surface of the annular protruding part; and the annular gripping the protruding part, which protrudes radially outward from the tubular outer surface of the tubular protruding part; the upper housing contains an annular support portion; an inner tubular suspended portion, the one performed on the tubular inner surface of the annular supporting portion hanging down from the ring upper surface of annular support portion and through its tubular inner surface forming a Central hole concentric with the hole of small diameter; thick-walled outer tubular suspended portion, the one performed on the tubular outer surface of the annular supporting portion hanging from the ring upper surface of annular support part, passing down from the ring lower end surface of the inner tubular suspended part and having a cylindrical inner surface; a third annular portion with a recess formed in the annular bottom surface of the annular support portion, the tubular outer surface of the inner tubular suspended part and the cylindrical inner surface of the outer tubular suspended portion; an inner tubular vertical portion and outer walls of the tubular vertical portion of the wall, which pass vertically down from the ring n is sung end surface of the outer tubular suspended portion; the fourth annular portion with a recess formed in the annular bottom end surface of the outer tubular suspended portion, the tubular outer surface of the inner tubular vertical part of the wall and a tubular inner surface of the outer tubular vertical part of the wall; an annular gripping portion which protrudes downward from the annular lower end surface of the outer tubular vertical side wall; and an annular hook portion which protrudes radially inward from the tubular inner surface of the annular gripping portion; and a liner thrust sliding bearing is placed in the third annular portion with a recess, an annular top surface is in sliding contact with the annular bottom surface of the annular support portion, forming a third annular part with the notch, and is placed in the first annular portion with a recess, an annular bottom surface is in sliding contact with the lower surface of the annular portion with the annular recess of the support portion, forming a first annular portion with a recess, and the annular lower surface of the annular support portion, the upper housing and the annular upper surface of the annular support part of the lower housing spaced from each other, the upper body is superimposed on the lower case so that kolawa the bottom end surface of the inner tubular suspended part is located opposite the surface with the annular shoulder with a gap between them, the cylindrical inner surface of the outer tubular suspended portion, having a greater wall thickness than the inner tubular suspended portion in the radial direction, is in sliding contact with the cylindrical outer surface of the annular support portion of the lower body, his inner tubular vertical portion of the wall is located in the second annular portion with a recess, an annular hook portion elastically planted in the annular gripping the protruding part, resulting in between planted elastic part and is a member of the smooth contact part cylindrical outer surface of the annular support portion is formed sealing portion of the labyrinth type relative to the cylindrical inner surface of the outer tubular suspended part due to the fact that the inner tubular vertical portion of the wall is in the second annular portion with a recess, and a tubular protruding portion and the annular gripping the protruding portion is in the fourth ring part with the notch.

In the thrust sliding bearing according to the present invention Pets rotation of the upper housing and the lower housing relative to each other in the direction of the axial load due to mutual smooth sliding of the annular upper surface of the pad thrust bearing skolian what I located in the first and third annular portions with a recess, and the annular lower surface of the annular support portion, the upper casing, and to permit rotation of the upper housing and the lower housing relative to each other in the direction of the radial load due to the mutual smooth sliding of the cylindrical inner surface of the outer tubular suspended part of the upper housing and the cylindrical outer surface of the annular support portion of the lower case.

In addition, as part of the thrust sliding bearing according to the present invention, which is formed by the annular upper surface of the liner and the annular bottom surface of the annular supporting part of the upper body and allows smooth sliding during rotation of the upper housing and the lower housing relative to each other in the direction of the axial load is located above the sealing part of the labyrinth type and the annular upper surface of the lower body, it is possible to prevent, as far as practicable, getting to this part of the thrust sliding bearing foreign objects such as dust particles, with inner and outer sides of the peripheral surface and thereby to avoid malfunctions, such as excessive wear of the parts of the thrust bearing due to the ingress of such extraneous pre the meters. In addition, due to the sealing part of the labyrinth type is prevented, as far as practicable, the entry of foreign objects such as dust particles, with the outside peripheral surface in the radial part of the sliding bearing, which is formed by the cylindrical inner surface of the outer tubular suspended part of the upper housing and the cylindrical outer surface of the annular support part of the lower housing and allows smooth sliding during rotation of the upper housing and the lower housing relative to each other in the direction of the radial load, and thereby it is also possible to avoid malfunctions, such as excessive wear of the parts of the thrust bearing due to hitting such foreign objects.

Synthetic resin for the manufacture of the liner thrust sliding bearing according to the present invention, which is placed between the upper casing and the lower casing, preferably should have, in particular, samonazva ability, as the synthetic resin for the manufacture of the upper shell and the lower shell preferably should possess superior mechanical properties such as wear resistance, impact resistance, sliding properties, including creep resistance, and rigidity. In particular, vernicosus and lower case should be preferably made of a thermoplastic synthetic resin, such as Polyacetal, polyamide and polyester resin. At the same time insert the thrust bearing should preferably be made of such material as polyethylene, fluorine resin, etc.,

Mounting structure for installation on the chassis of the vehicle by means of the described thrust bearing slide suspension rack type, equipped with hydraulic shock absorber and a cylindrical spring installed around the hydraulic shock absorber, includes an installation tool to install the piston rod of a hydraulic shock absorber to the vehicle body and the upper tool to install the springs, which includes a cylindrical spring, between the installation tool and the upper tool to install the springs fit the thrust sliding bearing and the installation tool includes an installation element having an annular flat portion attached to the surface of the vehicle body, and a cylindrical protruding portion, protruding downward from the annular inner edge of the annular flat portion and forming a through hole through its inner peripheral surface; and a mounting element having an annular flat portion, made in one piece on the lower surface of the annular flat part of us is novotneho element, and the cylindrical suspended portion extending downward from the annular outer edge of the annular flat part at the top of the tool to install the springs formed by the upper element, the spring having an annular flat portion and a cylindrical protruding portion, which protrudes upwards from the annular inner edge of the annular flat part and forms a through hole through its inner peripheral surface, the lower end surface of the cylindrical protruding part of the installation element and the upper end surface of the cylindrical protruding part of the upper element to install the springs are located opposite each other, and in the annular space, which is formed of a cylindrical protruding part of the installation element, the annular flat part of the installation element, cylindrical suspended part of the installation element, the annular flat part of the top element for the spring and the cylindrical projecting part of the top element for the spring, fit the thrust bearing so that the inner tubular suspended portion of the annular supporting portion, the upper housing is in contact with the outer surface of the cylindrical protruding part of the installation element, the annular top surface shall be annular supporting portion, the upper housing is in contact with the annular flat part of the installation element, the outer peripheral surface of the outer tubular suspended portion surrounded by the inner surface of the cylindrical suspended portion of the installation element, the annular lower surface of the annular support part of the lower housing is in contact with the top surface of the flat part of the top element for the spring, and a tubular inner surface of the small diameter annular supporting portion of the lower casing surrounded by the inner surface of the cylindrical protruding part of the upper element for the spring.

When the strut Assembly mounting structure according to the present invention rotates during operation of the steering control, the lower housing is rotated relative to the upper housing, and insert thrust bearing sliding fit between the upper body and lower body, gently allows this rotation of the lower body and thus smooth operation of the steering control. In addition, when a radial load she gently Pets due to cross-slip synthetic resin part of the radial sliding bearing is formed for the preservation of the bearing clearance between the cylindrical inner surface of the outer tubular suspended part of the annular support portion, the upper housing and the cylindrical outer surface of the ring TNA is Noah portion of the lower casing and formed this cylindrical inner surface of this cylindrical outer surface.

Advantages of the invention

In accordance with the invention can be created affordable thrust sliding bearing with a small radial size by performing liner radial sliding bearing between the upper and lower housings without the use of a radial sliding bearing, and mounting structure of the suspension rack type with this thrust sliding bearing.

Brief description of drawings

In Fig.1 shows a cross-section of the thrust sliding bearing according to one of embodiments of the present invention,

in Fig.2 shows a cross-section of the lower shell shown in Fig.1,

in Fig.3 shows a partially enlarged cross section of the lower shell shown in Fig.2,

in Fig.4 shows a cross-section of the upper shell, illustrated in Fig.1,

in Fig.5 shows a partially enlarged cross section of the upper shell, illustrated in Fig.4,

in Fig.6 shows a view in plan of the liner thrust sliding bearing is illustrated in Fig.1,

in Fig.7 shows a cross-section in the direction of the arrows VII-VII liner thrust sliding bearing is illustrated in Fig.6, and

in Fig.8 shows a cross-section of the mounting structure of the suspension rack t the PA according to one of preferred embodiments of the present invention using a liner thrust sliding bearing, is illustrated in Fig.1.

The preferred embodiment of the invention

Hereinafter the present invention will be described in more detail with reference to the preferred embodiments of illustrated in the drawings. It should be noted that the present invention is not limited to these options for implementation.

Thrust bearing 1 slide according to the present invention comprises a lower housing 2 made of synthetic resin, the upper shell 3 made of synthetic resin, superimposed on the lower case 2, and the insert 4 made of synthetic resin that are placed between the upper case 3 and lower case 2.

The lower housing 2 contains an annular supporting part 11, which has an annular upper surface 5 and the annular lower surface 6 and the tubular inner surface 7 of small diameter, tubular inner surface 8 of large diameter and a cylindrical outer surface 9, which are located between the annular upper surface 5 and the annular lower surface 6, and has a wide annular part 10 with the notch on the ring top surface 5; the hole 12 of a small diameter formed tubular inner surface 7 of small diameter annular supporting part 11 and facing the annular lower surface 6 of the ring supporting part 11; the hole 13 of large diameter in f is RME truncated cone, formed tubular inner surface 8 of large diameter in the shape of a truncated cone, the diameter of which gradually increases in the direction of the annular top surface 5 of the ring supporting part 11, and which extends to the annular upper surface 5 of the ring supporting part 11; surface with an annular shoulder, continuously passing from the annular inner peripheral end of the tubular inner surface 7 of small diameter and continuously passing from the annular outer peripheral end of the tubular inner surface 8 of large diameter; an annular protruding portion 15, which protrudes radially outwards from the lower end of the cylindrical outer surface 9; tubular protruding portion 19, located on the annular top surface 16 of the annular protruding part 15 and forming an annular part 18 with the notch through its tubular inner surface 17 together with the cylindrical outer surface 9 and the annular upper surface 16 of the annular protruding part 15; ring gripping the protruding part 20, which acts in a radial direction outward from the tubular outer surface of the tubular protruding part 19; and two with thinning of the wall of the annular part 21 with the grooves on the annular lower surface 6 of the ring TNA is Noah part 11, the exhaust from the annular lower surface 6 in the direction of the annular upper surface 5 and surrounding the hole 12 of small diameter to provide a uniform wall thickness of the ring supporting part 11.

The upper housing 3 includes an annular support portion 25; the inner tubular hanging portion 29 for one made on the tubular inner surface of the annular support part 25, hanging down from the ring top surface 26 of the annular support part 25 and through its tubular inner surface 27 forming the Central hole 28, concentric with the hole 12 of small diameter; thick-walled outer tubular suspended portion 32, one performed on the tubular outer surface of the annular support part 25 hanging from the ring top surface 26 of the annular support part 25, passing down from the annular lower end surface 30 of the inner tubular hanging portion 29 and having a cylindrical inner surface 31; an annular part 36 with the recess formed by the annular bottom surface 33 of the annular support portion 25, the tubular outer surface 34 formed by the surface in the form of a truncated cone inner tubular hanging portion 29, and a cylindrical inner surface 31 of the outer tubular suspended portion 32; the inside is ribbed vertical portion 38 and outer walls of the tubular vertical portion 39 of the wall, which pass vertically downward from the annular lower end surface 37 of the outer tubular suspended portion 32; a ring portion 42 with a recess formed in the annular bottom end surface 37 of the outer tubular suspended portion 32, the tubular outer surface 40 of the inner tubular vertical portion 38 of the tubular wall and the inner surface 41 of the outer tubular vertical portion 39 of the wall; an annular gripping portion 43, protruding downward from the annular lower end surface of the outer tubular vertical portion 39 of the wall; and an annular hook portion 44, protruding radially inward from the tubular inner surface of the annular gripping portion 43.

As for the outer tubular suspended portion 32 having a cylindrical inner surface 31 for forming part of a radial sliding bearing with a cylindrical outer surface 9 of the lower housing 2, the thickness of its walls is greater than the wall thickness of the inner tubular hanging portion 29 with the aim of increasing the resistance to radial load.

The liner 4 of the thrust sliding bearing includes an annular plate portion 53 having a cylindrical inner surface 52 forming the Central hole 51; a pair of annular recessed grooves 56, which may be a lubricant, such as to sistently grease, and which are made, respectively, on the annular top surface 54 and an annular bottom surface 55 of the annular plate portion 53 and surround the Central hole 51; and many radial recessed grooves 58, which may be a lubricant, such as grease, and which are made on the annular top surface 54 and an annular bottom surface 55 of the annular plate portion 53, one end goes in the annular recessed groove 56 and the other end comes out on the cylindrical outer surface 57 of the annular plate portion 53.

The cylindrical inner surface 52 forming the Central hole 51 of the insert 4 of the thrust sliding bearing has a larger inner diameter than the outer diameter surface 61 of the ring inner vertical wall of the ring supporting part 11 forming the annular part 10 with a recess, and a cylindrical outer surface 57 of the insert 4 of the thrust sliding bearing has a smaller outer diameter than the inner diameter surface 62 of the annular outer vertical wall of the ring supporting part 11 forming the annular part 10 with the notch. The annular recessed grooves 56 and radial recessed groove 58 on the ring top surface 54 and an annular bottom surface 55 of the annular plate part 53 for Olney grease, such as grease.

The liner 4 of the thrust bearing is located in the annular part 36 with a hollow, annular top surface 54 is in sliding contact with the annular bottom surface 33 of the annular support portion 25, forming the annular portion 36 with a recess, and the annular part 10 with a hollow, annular bottom surface 55 is in sliding contact with the annular part with the notch bottom surface 63 of the ring supporting part 11 forming the annular part 10 with the recess, together with the surface 61 of the ring inner vertical wall and the surface 62 of the annular outer vertical wall so that the annular bottom surface 33 of the annular supporting part 25 of the upper case 3 and the annular upper surface 5 of the ring supporting part 11 of the lower shell 2 spaced apart from each other. Accordingly, the annular top surface 54 of the annular plate portion 53 is located above the plane in which goes wide of the annular part 10 with the notch.

The thrust bearing 1 slide describes the design of the upper body 3 are superimposed on the lower case 2 so that the tubular outer surface 34 of the inner tubular hanging portion 29 of the ring support part 25 is located opposite the tubular inner surface 8 of the large diameter of the ring and the supporting part 11 of the lower housing 2 with a gap between them, and an annular lower end surface 30 of the inner tubular hanging portion 29 is located opposite the surface 14 with the annular shoulder of the ring supporting part 11 of the lower housing 2 with a gap between them, a cylindrical inner surface 31 of the outer tubular suspended portion 32, having a greater wall thickness than the inner tubular hanging portion 29 in the radial direction, is in sliding contact with the cylindrical outer surface 9 of the ring supporting part 11 of the lower housing 2, the inner tubular vertical portion 38 of the wall is located in the annular part with the notch 18, and the annular hook portion 44 of the elastic planted in the annular gripping the protruding part 20, resulting in between planted elastic part and is a member of the smooth contact part cylindrical outer surface 9 of the ring supporting part 11 is formed sealing portion of the labyrinth type relative to the cylindrical inner surface 31 of the outer tubular suspended 32 part due to the fact that the inner tubular vertical portion 38 of the wall is in the second annular part 18 with the recess, and a tubular protruding portion 19 and the annular gripping the protruding portion 20 is located in the annular part 42 with the notch.

The thrust bearing 1 slide the rotation of the upper case 3 and lower case 2 relative to the tion to each other in the direction of the axial load permitted at the expense of a smooth slip resistant sliding bearing with the participation of the annular top surface 54 of the insert 4 of the thrust sliding bearing, located in the annular parts 10 and 36 with a groove, on the one hand, and the annular bottom surface 33 of the annular supporting part 25 of the upper housing 3, on the other hand, the rotation of the upper shell 3 and the lower housing 2 relative to each other in the direction of the radial load permitted at the expense of smooth sliding part of the thrust sliding bearing with a part cylindrical inner surface 35 of the outer tubular suspended portion 32 of the upper shell 3, on the one hand, and a cylindrical outer surface 9 of the ring supporting part 11 of the lower housing 2, on the other hand.

In addition, as part of the thrust bearing 1 slide, which is formed an annular upper surface 54 of the insert 4 of the thrust sliding bearing and the annular bottom surface 33 of the annular supporting part 25 of the upper shell 3 and allows smooth sliding during rotation of the upper shell 3 and the lower housing 2 relative to each other in the direction of the axial load is located above the sealing part of the labyrinth type and the annular upper surface 5 of the lower shell 2, it is possible to prevent, as far as practicable, getting to this part of the thrust bearing 1 slide of foreign objects such as dust particles, with inner and outer sides of the peripheral surface of the thrust bearing 1, break the rules and thereby to avoid malfunctions, such as excessive wear of the parts of the thrust bearing due to hitting such foreign objects. In addition, due to the sealing part of the labyrinth type can be prevented, as far as practicable, the entry of foreign objects such as dust particles from the outer peripheral surface of the thrust bearing 1 slide in the radial part of the sliding bearing is formed by a cylindrical inner surface 31 of the outer tubular suspended portion 32 of the upper shell 3 and a cylindrical outer surface 9 of the ring supporting part 11 of the lower shell 2 and allows smooth sliding during rotation of the upper shell 3 and the lower housing 2 relative to each other in the direction of the radial load, and thereby it is also possible to avoid malfunctions, such as excessive wear of the parts of the thrust bearing due to hitting such foreign objects.

Suspension 72 bulkhead of the vehicle, which is equipped with a hydraulic shock absorber (not shown) and a cylindrical spring 71, which is set around a hydraulic shock absorber that is mounted on the vehicle body by means of the described thrust bearing 1 slide using mounting structure 73, as shown in Fig.8.

M is ntana design 73 to install suspension 72 bulkhead to the vehicle body by means of a thrust bearing 1 slide contains the installation tool 75 for installation of the piston rod 74 of the hydraulic shock absorber to the vehicle body, and the upper tool 76 for mounting the cylindrical spring 71, while the thrust bearing 1 slide is placed between the adjusting means 75 and the upper tool 76 for the spring.

The installation tool 75 contains the installation element 78, which is attached to the vehicle body by bolts 77; mounting element 80, which for one is connected with the adjusting element 78 and surrounds the annular upper surface 26 of the annular support portion 25 and a cylindrical outer surface 79 of the outer tubular suspended portion 32 of the upper case 3 thrust bearing 1 slide; and connecting and fastening means 82 for connecting and fastening the upper end 81 of the piston rod 74 of a hydraulic shock absorber to the installation element 78.

The installation element 78 includes an annular flat portion 83, which is fixed on the surface of the vehicle body, and a cylindrical protruding portion 85, which for one is down from the ring inner edge of the annular flat portion 83 and forms through its inner peripheral surface of the through hole 84.

The installation element 80 includes an annular flat portion 87 having a through hole 86 and made in one piece on the lower surface is STI annular flat portion 83 of the installation element 78, and the cylindrical suspended portion 89, which for one is down from the ring outer peripheral edge of the annular flat portion 87. This installation element 80 for one connected with the adjusting element 78 so that the annular flat portion 87 planted on the outer peripheral surface of the cylindrical protruding part 85 of the installation element 78 through the through hole 86, and an annular flat portion 87 is connected with the bottom surface of the annular flat portion 83 of the installation element 78.

The upper tool 76 for the spring formed by the upper element 93 to install the springs, which contains an annular flat portion 90 and the cylindrical protruding portion 92, for which one acts up of an annular inner edge of the annular flat portion 90 and through its inner peripheral surface forms a through hole 91. The upper end surface 94 of the cylindrical protruding part 92 of the top element 93 to install springs is located opposite the lower end surface 95 of the cylindrical protruding part 85 of the installation element 78.

Connecting and fastening means 82 includes an outer coupling element 96, the outer surface of which is planted and attached to the inner surface of the installation e is ementa 78; an annular elastic rubber element 97 is connected to the outer connecting element 96; internal connecting element 98, which is connected with the annular elastic rubber element 97; and a nut 99, by means of the thread connected with the upper end 81 of the piston rod 74 and fastening the inner edge of the inner coupling element 98 with the upper end 81.

Thrust bearing 1 slide is placed between the mounting element 78 and the upper element 93 to install the springs, i.e. in the annular space 101, which is formed by the inner surface of the cylindrical protruding part 85 of the installation element 78, the bottom surface of the annular flat portion 87 of the installation element 80, the inner surface of the cylindrical suspended portion 89, the top surface of the annular flat portion 90 of the upper element 93 to install the springs and the outer surface of the cylindrical protruding part 92 of the top element 93 to install the springs, therefore, that the tubular inner surface 27 of the inner tubular hanging portion 29 of the ring supporting part 25 of the upper housing 3 is in contact with the outer surface of the cylindrical protruding part 85 of the installation element 78, the annular top surface 26 of the annular supporting part 25 of the upper housing 3 is in contact with the lower surface of the ring is howl flat portion 87 of the installation element 80, and a cylindrical outer surface 79 of the outer tubular suspended portion 32 surrounded by the inner surface of the cylindrical suspended portion 89 of the installation element 80 and in contact with the inner surface of the cylindrical suspended portion 89, the annular lower surface 6 of the ring supporting part 11 of the lower shell 2 is in contact with the top surface of the flat part 90 of the top element 93 to install the spring, and a tubular inner surface 7 of small diameter annular supporting portion 11 of the lower housing 2 is surrounded by the inner surface of the cylindrical protruding part 92 of the upper element 93 to install the spring and in contact with the inner surface of the cylindrical protruding part 92.

When the upper tool 76 for mounting the spring in the mounting structure 73 is rotated relative to the installation tool 75 in the process of steering control, the lower case 2 is rotated relative to the upper housing 3 and the insert 4 thrust sliding bearing is placed between the upper case 3 and lower case 2, smoothly allow this rotation of the lower housing 2 and thereby smooth operation of the steering control. In addition, when a radial load she gently Pets due to cross-slip synthetic resin part of the radial sliding bearing, SFOR is new with preservation of the bearing clearance between the cylindrical inner surface 31 of the outer tubular suspended portion 32 of the annular supporting part 25 of the upper shell 3 and a cylindrical outer surface 9 ring supporting part 11 of the lower shell 2.

In addition, since the mounting structure 73 part thrust bearing 1 slide fit in the annular space 101, is located above the annular upper surface 5 and the sealing part of the labyrinth type, it is possible to prevent, as far as practicable, getting to this part of the thrust bearing 1 slide of foreign objects such as dust particles, with inner and outer sides of the peripheral surface of the thrust bearing 1 slide and thereby to avoid malfunctions, such as excessive wear of the parts of the thrust bearing due to hitting such foreign objects. In addition, due to the sealing part of the labyrinth type can be prevented, as far as practicable, the entry of foreign objects such as dust particles from the outer peripheral surface of the thrust bearing 1 slide in the radial part of the sliding bearing is formed by a cylindrical inner surface 31 of the outer tubular suspended portion 32 of the upper shell 3 and a cylindrical outer surface 9 of the ring supporting part 11 of the lower shell 2 and allows smooth sliding during rotation of the upper shell 3 and the lower housing 2 relative to each other in the radial direction is Noah load, and thus it is also possible to avoid malfunctions, such as excessive wear of the parts of the thrust bearing due to hitting such foreign objects.

Description of items

1: thrust bearing

2: lower case

3: upper case

4: insert the thrust bearing

1. Thrust sliding bearing, comprising: a lower housing made of synthetic resin, the upper body is made of synthetic resin placed on the lower casing and the liner thrust sliding bearing made of synthetic resin that are placed between the upper case and the lower case,
the lower housing contains an annular support portion which has an annular upper surface and a circular bottom surface, and a tubular inner surface of the small diameter tubular inner surface of large diameter and a cylindrical outer surface located between the annular upper surface and a circular bottom surface, and a first annular portion with the notch on the ring top surface; a hole of small diameter, formed by a tubular inner surface of the small diameter annular supporting portion and facing the annular lower surface of the annular support portion; a hole of large diameter, formed tubular inner surface of the large d is ametra annular supporting portion and facing the annular upper surface of the annular supporting part; the surface with the annular shoulder, continuously passing from the annular inner peripheral end of the tubular inner surface of small diameter and continuously passing from the annular outer peripheral end of the tubular inner surface of large diameter; an annular protruding portion which protrudes radially outwards from the lower end of the cylindrical outer surface; a tubular protruding portion, which is located on the annular upper surface of the annular protruding part and through its tubular inner surface forms a second annular portion with a notch together with a cylindrical outer surface and the annular top surface of the annular protruding part; and an annular gripping the protruding part, which acts in the radial direction outward from the tubular outer surface of the tubular extension,
the upper housing contains an annular support portion; an inner tubular suspended portion, the one made of tubular inner surface of the annular supporting portion hanging down from the ring upper surface of annular support portion and through its tubular inner surface forming a Central hole concentric with the hole of small diameter; thick-walled outer is ribbed suspended part, for one performed on the tubular outer surface of the annular supporting portion hanging from the ring upper surface of annular support portion, passing down from the ring lower end surface of the inner tubular suspended part and having a cylindrical inner surface; a third annular portion with a recess formed in the annular bottom surface of the annular support portion, the tubular outer surface of the inner tubular suspended part and the cylindrical inner surface of the outer tubular suspended portion; an inner tubular vertical portion and outer walls of the tubular vertical portion of the wall, which pass vertically downward from the annular lower end surface of the outer tubular suspended portion; a fourth annular portion with a recess, formed annular lower end surface of the outer tubular suspended portion, the tubular outer surface of the inner tubular vertical part of the wall and a tubular inner surface of the outer tubular vertical part of the wall; an annular gripping portion which protrudes downward from the annular lower end surface of the outer tubular vertical part of the wall; and an annular hook portion which protrudes radially inward from the tubular inner surface is STI annular gripping portion, and
insert thrust sliding bearing is placed in the third annular portion with a recess, an annular top surface is in sliding contact with the annular bottom surface of the annular support portion, forming a third annular part with the notch, and is placed in the first annular portion with a recess, an annular bottom surface is in sliding contact with the lower surface of the annular portion with the annular recess of the support portion, forming a first annular portion with a recess, and the annular lower surface of the annular support portion, the upper housing and the annular upper surface of the annular support part of the lower housing spaced from each other,
the upper body is superimposed on the lower housing so that the annular bottom end surface of the inner tubular suspended part is located opposite the surface with the annular shoulder with a gap between them, the cylindrical inner surface of the outer tubular suspended portion, having a greater wall thickness than the inner tubular suspended portion in the radial direction, is in sliding contact with the cylindrical outer surface of the annular support portion of the lower body, his inner tubular vertical portion of the wall is located in the second annular portion with a notch, this is m its annular hook portion elastically planted in the annular gripping the protruding part, resulting in between planted elastic part and is a member of the smooth contact part cylindrical outer surface of the annular support portion is formed sealing portion of the labyrinth type relative to the cylindrical inner surface of the outer tubular suspended part due to the fact that the inner tubular vertical portion of the wall is in the second annular portion with a recess, and a tubular protruding portion and the annular gripping the protruding portion is in the fourth ring part with the notch.

2. Mounting structure for installation on the chassis of the vehicle by means of the thrust sliding bearing according to p. 1 suspension rack type, equipped with hydraulic shock absorber and a cylindrical spring installed around the hydraulic shock absorber that contains the installation tool to install the piston rod of a hydraulic shock absorber to the vehicle body and the upper tool to install the springs, which includes a cylindrical spring, between the installation tool and the upper tool to install the springs fit the thrust sliding bearing,
the installation tool includes an installation element having an annular flat portion attached to the surface of the vehicle body, and a cylindrical who stopaudio part, protruding downward from the annular inner edge of the annular flat portion and forming a through hole through its inner peripheral surface; and a mounting element having an annular flat portion, made in one piece on the lower surface of the annular flat part of the adjusting element, and the cylindrical suspended portion extending downward from the annular outer edge of the annular flat part,
the upper tool to install the springs formed by the upper element, the spring having an annular flat portion and a cylindrical protruding portion, which protrudes upwards from the annular inner edge of the annular flat part and forms a through hole through its inner peripheral surface, the lower end surface of the cylindrical protruding part of the installation element and the upper end surface of the cylindrical protruding part of the upper element to install the springs are located opposite each other, and
in the annular space, which is formed of a cylindrical protruding part of the installation element, the annular flat part of the installation element, cylindrical suspended part of the installation element, the annular flat part of the top element for the spring and the cylindrical protruding h is STU the top element for the spring, fit the thrust bearing so that the inner tubular suspended portion of the annular supporting portion, the upper housing is in contact with the outer surface of the cylindrical protruding part of the installation element, the annular upper surface of the annular support portion, the upper housing is in contact with the annular flat part of the installation element, the outer peripheral surface of the outer tubular suspended portion surrounded by the inner surface of the cylindrical suspended portion of the installation element, the annular lower surface of the annular support part of the lower housing is in contact with the top surface of the flat part of the top element for the spring, and a tubular inner surface of the small diameter annular supporting portion of the lower casing surrounded by the inner surface of the cylindrical protruding part of the upper element for the spring.



 

Same patents:

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=rąt. 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: process engineering.

SUBSTANCE: set of inventions relates to plain bearing and method of its production. Proposed plain bearing comprises metal base, intermediate layer applied thereon and antifriction layer applied on said intermediate layer. Said intermediate layer comprises at least one thermoplastic polymer containing functional groups of the formula

.

Note here that R stands for cyclic or linear organic radicals with 1-20 carbon atoms. Note also that functional groups are implanted into thermoplastic polymer by adding at least one modifying agent, namely, toxilic acid and its derivatives, in particular its anhydride and or itaconic acid and its derivatives, particularly, its anhydride, and/or citraconic acid and its derivatives, particularly, its anhydride.

EFFECT: bearing that requires no servicing.

24 cl, 2 dwg

FIELD: construction.

SUBSTANCE: pendulum sliding support (1) is designed to separate soil (2) of the base from a structure (3), for instance, in case of base soil (2) movements caused by an earthquake or as an alternative for traditional deformed supports. The support (1) comprises the first support sliding plate (5) with the first concave sliding surface (5'), a support block (4), being in a sliding contact with the first surface (5'), and also the second support plate (6) with the second concave surface (6'), which contacts with the support block (4). The first sliding surface (5') provides at least in one position a stable position of the support block (4) balance, in which it returns independently after deviation caused by exposure to external forces. Antifriction material (9a, 9b) contains plastic with elastic-plastic compensating properties and with low friction coefficient, at the same time plastic has compensating properties, which make it possible to compensate for deviation of 0.5 mm from the specified plane of the specified sliding surface (5').

EFFECT: increased durability, strength and provision of most accurate return of a sliding element into balance position.

33 cl, 5 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

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=rąt. 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

Turbocompressor // 2469213

FIELD: machine building.

SUBSTANCE: turbocompressor for internal combustion engines includes housing with oil supply, discharge lines, cover plate of housing, shaft with impellers of compressor, turbine, radial and axial sliding bearings and pad plate. Axial sliding bearing is made in the form of two bases, on working surfaces of which oil supply slots and wedge-like grooves are made, which can be adjacent to pad plate. A groove is made on the base on the side of the housing cover plate and forms together with cover plate a cylindrical chamber that is connected to oil supply slots and oil supply line.

EFFECT: improvement of axial sliding bearing operation.

6 dwg

FIELD: transport.

SUBSTANCE: invention relates to vehicle structure. The vehicle structure includes locating block, additional member, overlapping member, surface. The overlapping member is made with possibility of fixation and/or functioning of this additional member. The overlapping member contains two different elements. The first of these elements is made capable to be installed on locating block, and the second element is made capable to be fixed on the first element and with possibility of additional member fixation and/or functioning. Parts of the first and the second element form surface essentially perpendicular to vehicle vertical direction. The surface provides possibility of additional member fixation and/or functioning.

EFFECT: adaptation to other parts of vehicle structure where one of the members takes various positions depending on vehicle profile.

8 cl, 5 dwg

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