Plain thrust bearing from synthetic resin

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

 

The technical field to which the invention relates

The present invention relates to a thrust bearing made of synthetic resin.

The level of technology

Usually suspension rack type (strut-type suspension is used in front wheel four-wheeled vehicle, designed so that the strut Assembly with a hydraulic shock absorber in an outer cylinder, integrally formed with the main shaft, combined with a cylindrical spring. Among the suspensions of this type there is a suspension, in which the piston rod of the strut assy rotates in the process of steering when turning rack assy piston with a cylindrical spring, and the suspension of another type, in which the piston rod does not rotate. To ensure smooth rotation of the rack Assembly, sometimes in both designs instead of the roller bearing between the element rack Assembly onto the vehicle body and the upper nest of coil springs is used the thrust sliding bearing made of synthetic resin.

Documents of prior art

Patent documents

Patent document JP-A-2010-53908

Patent document JP-A-2010-31949

Patent document JP-A-2009-257516

A brief summary of the invention

Tasks the solution of which is directed and�finding

In such a thrust sliding bearing made of synthetic resin, having an upper housing made of synthetic resin, the lower body of a synthetic resin, is superposed on the upper casing rotatably around the axis of the upper housing, and a thrust bearing Assembly made of synthetic resin that fit between the upper and lower housings, labyrinth means of the action of using gaps between the protruding portions on the inner peripheral side and outer peripheral side between the upper casing and the lower casing to prevent the ingress of dust, muddy water, etc. between the upper case and lower case.

However, sometimes when using such a tool labyrinth action is impossible to achieve a sufficient effect of preventing dust, dirty water, etc., in harsh conditions, and if dust, dirty water, etc. between the upper casing and the lower casing, it is impossible to ensure smooth rotation of the lower housing relative to the upper body that may result in the occurrence of abnormal noise.

The present invention is created considering the described features, and it is based on the task of creating a thrust sliding bearing made of synthetic resin, which even in severe conditions can effectively prevent p�Lee, dirty water, etc. and can reduce the occurrence of abnormal noise due to dust, dirty water, etc.

Means of solving problems

The thrust sliding bearing made of synthetic resin according to the present invention has an upper housing made of synthetic resin containing an upper annular plate section, an outer cylindrical section, the upper annular end of which is integrally formed with the outer annular end of the upper annular plate section, and which hangs down from the outer circumferential end and the inner cylindrical section, the upper annular end of which is integrally formed with an inner annular end of the upper annular plate section, and which hangs down from the inner annular end; the lower body of a synthetic resin, superimposed on the upper body, with the possibility of rotation around the axis of the upper shell and having a lower annular plate section and an upper cylindrical section, integrally formed with the annular upper surface of the lower annular plate section and extending vertically upward from the annular upper surface; a thrust bearing Assembly made of synthetic resin that fit between the upper casing and the lower casing and having an annular plate section, an annular upper�Ernest which is in contact with the annular lower surface of the upper annular plate section, with the possibility of rotation around the axis of the upper shell, and an annular lower surface which is in contact with the annular upper surface of the cylindrical portion of the lower shell, and an upper cylindrical section, the upper annular end of which is integrally formed with an inner annular end of the annular plate section, and which hangs down from the inner circumferential end; an outer elastic sealing element which is in contact with the outer surface of the cylindrical portion of the lower shell of its internal providepulmonary edge, integrally formed with its cylindrical inner surface and projecting diagonally inward and upward from the cylindrical inner surface, and which is in contact with the inner surface of the outer cylindrical portion of the upper shell of his outer providepulmonary edge, integrally formed with its cylindrical outer surface and projecting diagonally outward and downward from the cylindrical outer surface; and an inner elastic sealing element which is in contact with the inner surface of the cylindrical portion of the lower shell of his outer providepulmonary edge, integrally formed with its cylindrical outer surface and projecting diagonally outward and upward from the cylindrical outer surface, and Coto�th is in contact with the outer surface of the inner cylindrical portion of the upper shell of its internal providepulmonary edge, integrally formed with its cylindrical inner surface and projecting diagonally inward and downward from the cylindrical inner surface, the annular lower end surface of the outer upper cylindrical portion of the housing located opposite the annular upper surface of the lower annular plate portion of the bottom of the housing with a gap therebetween, the inner surface of the outer cylindrical portion of the upper shell has an internal surface in the form of a truncated cone, which is continuously connected with the lower surface of the upper annular plate section, and which is in contact with the outer providermetadata edge of the outer elastic sealing element, the outer surface of the cylindrical portion of the lower shell has a cylindrical outer surface of small diameter, interacted inner providermetadata edge of the outer elastic sealing element, the cylindrical outer surface of large diameter having a larger diameter than the cylindrical outer surface of the small diameter, and an annular stepped surface which is located between the cylindrical outer surface of the small diameter and the cylindrical outer surface of the large diameter, and which is in contact with interested�pollen the lower surface of the outer elastic sealing element, the outer surface of the inner cylindrical portion of the upper shell has a cylindrical outer surface of large diameter, which is continuously connected with the lower surface of the upper annular plate section, and a cylindrical outer surface of small diameter, which is continuously connected to the cylindrical outer surface of large diameter and has a smaller diameter than the cylindrical outer surface of large diameter, and which is in contact with the inner provideproperty the inner edge of the elastic sealing element, the inner surface of the cylindrical portion of the lower casing has a cylindrical inner surface of small diameter, is continuously connected to the annular inner surface of the lower annular plate portion of the bottom of the housing, the cylindrical inner surface of large diameter, having a larger diameter than the cylindrical inner surface of the small diameter, and continuously connected to the annular upper surface of the cylindrical portion of the lower shell, an intermediate cylindrical inner surface which has a larger diameter than the cylindrical inner surface of the small diameter, but a smaller diameter than the cylindrical inner surface of large diameter, IP which adjoins the outer provideproperty the inner edge of the elastic sealing element, the lower annular stepped surface located between the cylindrical inner surface of small diameter and an intermediate cylindrical inner surface, and which is in contact with the annular lower surface of the inner elastic sealing element, and an upper annular stepped surface which is located between the intermediate cylindrical inner surface and a cylindrical inner surface of the large diameter annular lower end surface of the inner cylindrical portion of the upper shell, which is continuously connected to the cylindrical outer surface of the small diameter inner cylindrical portion of the upper housing and is located opposite the annular stepped surface of the cylindrical portion of the lower housing with a gap therebetween, and the cylindrical portion of the thrust bearing Assembly slip, which is located between the cylindrical outer surface of the large diameter outer surface of the inner cylindrical portion of the upper shell and the cylindrical inner surface of the large diameter of the inner surface of the cylindrical portion of the lower shell.

In the thrust sliding bearing made of synthetic resin according to the present invention, the outer elastic sealing �element is provided in contact with the cylindrical outer surface of the small diameter outer surface of the cylindrical portion of the lower shell of its internal providepulmonary edge, integrally formed with the cylindrical inner surface and projecting diagonally inward of the cylindrical inner surface and in contact with the inner surface in the shape of a truncated cone inner surface of the outer cylindrical portion of the upper shell of his outer providepulmonary edge, integrally formed with a cylindrical outer surface and projecting diagonally outward and downward from the cylindrical outer surface, and optionally in contact with its annular lower surface with an annular stepped surface of the outer surface of the cylindrical portion of the lower shell. Internal elastic sealing element is in contact with the intermediate cylindrical inner surface of the inner surface of the cylindrical portion of the lower shell of his outer providepulmonary edge, integrally formed with the cylindrical inner surface and projecting diagonally outward and upward from the cylindrical outer surface and is in contact with the cylindrical outer surface of the small diameter outer surface of the inner cylindrical portion of the upper shell of its internal providepulmonary edge, integrally formed with the cylindrical inner surface and in�stepping diagonally inward and downward from the cylindrical inner surface, and additionally in contact with its annular lower surface with the lower annular stepped surface of the inner surface of the cylindrical portion of the lower shell. Accordingly, even in severe conditions can effectively prevent dust, dirty water, etc. into the annular space which exists between the annular lower surface of the upper annular plate section and the annular upper surface of the cylindrical portion of the lower shell and in which is placed an annular plate portion of the thrust bearing Assembly slip through the annular gap between the annular lower end surface of the outer cylindrical portion of the upper shell and the annular upper surface of the lower annular plate portion of the bottom of the housing and through the annular gap between the annular lower end surface of the inner cylindrical portion of the upper shell and the lower annular stepped surface of the cylindrical portion of the lower shell, to reduce the occurrence of abnormal noise due to dust, dirty water, etc.

In accordance with the present invention the inner surface of the outer cylindrical portion of the upper casing may have a cylindrical inner surface, the annular upper� end of which is continuously connected to the annular lower end of the inner surface in the shape of a truncated cone, and an annular lower end of which is continuously connected to the annular inner edge of the annular lower end surface of the outer cylindrical portion of the upper shell or the inner surface of the outer cylindrical portion of the upper shell may be truncated up conical surface, an annular upper end of large diameter which is continuously connected to the annular lower end of the inner surface in the shape of a truncated cone, and which has an annular lower end of small diameter with a smaller diameter than the annular upper end of large diameter, and a truncated down conical surface, an annular upper end of small diameter which is continuously connected to the annular lower end of the small diameter of the truncated upward tapered surface, and which has an annular lower end of the large diameter with a larger diameter than the annular upper end of small diameter.

In addition, in accordance with the present invention, each of the outer elastic sealing element and the inner elastic sealing element can contain elastic sealing body having corresponding provideproperty edges and the metal core embedded in the elastic sealing body.

In one of preferred examples of the lower case can have many vystupali� plots integrally formed with the annular upper surface of its cylindrical portion and spaced from each other in the axial direction, and the annular plate portion of the thrust bearing Assembly slip can have many holes or slits, which include respective projecting portions of the plurality of protruding parts of the lower body. Due to this, when rotating around the axis of the thrust bearing Assembly slide is stationary relative to the lower housing and can be rotated relative to the upper housing, whereby the upper housing can be rotated relative to the lower housing about the axis of the upper shell.

In another preferred example, the annular lower surface of the outer elastic sealing element can have at least one providepulmonary annular protruding surface and the annular lower surface of the inner elastic sealing element can have at least one providepulmonary annular protruding surface. In the presence of such provideproperty annular protruding surfaces may be enhanced by compression of the annular bottom surface of the outer elastic sealing element and the lower annular surface of the inner elastic sealing element at the expense Mgmt�Goy deformation of these annular protruding surfaces, and thereby can more effectively be prevented the ingress of dust, muddy water, etc. into the annular space in which is placed an annular plate portion of the thrust bearing Assembly slip, and can satisfactorily decrease the occurrence of abnormal noise due to dust, dirty water, etc.

In addition, in accordance with the present invention the outer surface of the cylindrical portion of the lower shell may have a protruding in the radial direction of the cylindrical outer surface, the annular upper edge of which is continuously connected to the annular upper surface of the cylindrical portion, and which has a larger diameter than the cylindrical outer surface of small diameter, which is in contact with the inner providermetadata edge of the outer elastic sealing member, the cylindrical outer surface of small diameter, which is in contact with the inner providermetadata edge of the outer elastic sealing element, can extend in the axial direction between the protruding in the radial direction of the cylindrical outer surface and an annular stepped surface, which adjoins the annular lower surface of the outer elastic sealing element, and the inner surface of the cylindrical�about plot of the lower casing may have a protruding in the axial direction of the annular stepped surface, the annular inner edge which is continuously connected to the annular upper edge of the cylindrical inner surface of large diameter cylindrical section, and which is located closer to the annular lower end surface of the inner cylindrical portion of the upper shell in the axial direction than the lower annular stepped surface which is in contact with the annular lower surface of the inner elastic sealing element, the lower annular stepped surface which is in contact with the annular lower surface of the inner elastic sealing element, can extend in the radial direction between the protruding in the axial direction of the annular stepped surface and the intermediate cylindrical inner surface. When such protruding in the radial direction of the cylindrical outer surface and protruding in the axial direction of the annular stepped surface can be satisfactorily installed in a specified position of the outer elastic sealing element and the inner elastic sealing element.

The upper housing and lower housing may be made of synthetic resin, comprising at least one of the following: Polyacetal resin, a polyamide resin, thermoplastic polyester resin, �poliolefinas resin, polycarbonate resin and theroplastics resin. The node thrust sliding bearing may be made of a synthetic resin comprising at least one of the following: Polyacetal resin, a polyamide resin, thermoplastic polyester resin, polyolefin resin and theroplastics resin. For the manufacture of the upper shell and the lower shell can be used a synthetic resin similar to the synthetic resin thrust bearing Assembly slip, but, in particular, synthetic resin is applied with satisfactory friction characteristics in combination with a synthetic resin thrust bearing Assembly slip. As an example, the following combinations of resin host thrust sliding bearing and a resin upper and lower housings: combination polyacetale resin and a polyamide resin; a combination of a polyolefin resin, particularly polyethylene resin and polyacetale resin; combination polyacetale resin, a thermoplastic polyester resin, in particular polybutylene terephthalate, and a combination of polyacetale resin and polyacetale resin.

Advantages of the invention

In accordance with the present invention can be created by the thrust sliding bearing made of synthetic resin, which allows even in the harsh conditions effectively prevent the ingress of p�Lee, dirty water, etc. and can reduce the occurrence of abnormal noise due to dust, dirty water, etc.

Brief description of the drawings

Fig.1 shows an explanatory front view in cross section of one embodiment of the present invention,

Fig.2 shows an explanatory view in cross-section in the direction of the arrows II-II in Fig.3 lower housing illustrated in Fig.1,

Fig.3 shows an explanatory plane view of the lower housing illustrated in Fig.1,

Fig.4 shows enlarged explanatory front view of a transverse section of the right part of the embodiment illustrated in Fig.1,

Fig.5 shows an enlarged explanatory front view of a transverse section of the left part of the embodiment illustrated in Fig.1,

Fig.6 shows an explanatory plane view of the host thrust bearing illustrated in Fig.1,

Fig.7 shows an explanatory view in cross-section in the direction of the arrows VII-VII in Fig.6 node thrust sliding bearing illustrated in Fig.1,

Fig.8 shows explanatory detail view in cross section of the outer elastic sealing element illustrated in Fig.1,

Fig.9 shows explanatory detail view in cross section of EXT�nego elastic sealing element, illustrated in Fig.1,

Fig.10 shows an explanatory enlarged front view in cross section corresponding to the view in Fig.4, the right side of another embodiment of the present invention,

Fig.11 shows an explanatory enlarged front view in cross section corresponding to the view in Fig.5, the left portion of another embodiment of the present invention illustrated in Fig.10, and

Fig.12 shows an explanatory plan view corresponding to the view in Fig.3, lower housing according to another embodiment of the present invention illustrated in Fig.10.

The implementation of the invention

In the following example of the preferred variants illustrated in the drawings will be described in more detail the implementation of the invention. It should be noted that the present invention is not limited to these options implementation.

Fig.1-9 shows the thrust bearing 1 slide made of synthetic resin according to this embodiment of the with the upper shell 12 made of synthetic resin, which has an upper annular plate section 2, the outer cylindrical section 5, the upper annular end 4 of which is integrally formed with an outer annular end 3 of the upper annular plate section 2, and which hangs down from the outer�th of the annular end 3, the inner cylindrical section 8, the upper annular end 7 of which is integrally formed with an inner annular end 6 of the upper annular plate section 2, and which hangs down from the inner annular end 6, and an annular protruding section 11 having a flat top surface 10, integrally formed with the annular upper surface 9 of the upper annular plate section 2; the lower body of a synthetic resin 22 is superposed on the upper casing 12 for rotation in the direction R about the axis O of the upper casing 12 and having a lower annular plate section 15, the cylindrical section 17, integrally formed with the annular upper surface 16 of the lower annular plate section 15 and extending vertically upward from the annular upper surface 16 hanging cylindrical section 19, integrally formed with a radially inward-side annular bottom surface 18 of the lower annular plate section 15 and hanging down from the ring bottom surface 18, and a multitude of protruding sections 21, integrally formed with an outer radial edge of the annular upper surface 20 of the cylindrical portion 17 and spaced from each other in the direction R which is a direction around the axis O; the node thrust bearing 33 from �sinteticheskoi resin, fits between the upper housing 12 and lower housing 22 and having an annular plate-like section 28, the annular upper surface 26 which is in contact with the annular lower surface 25 of the upper annular plate section 2 with the possibility of rotation in the direction R about the axis O of the upper casing 12, and an annular bottom surface 27 which is in contact with the annular upper surface 20 of the cylindrical portion 17 of the lower shell 22, and an upper cylindrical section 31, the upper annular end 30 which is integrally formed with an inner annular end 29 of the annular plate section 28, and which hangs down from the inner annular end 29; outer elastic sealing element 47, which is in contact with the outer surface 41 of the cylindrical portion 17 of the lower shell 22 of its internal providepulmonary edge 43, integrally formed with the cylindrical inner surface 42 and projecting diagonally inward from the cylindrical inner surface 42, and which is also in contact with the inner surface 44 of the outer cylindrical portion 5 of the upper shell 12 of its outer providepulmonary edge 46, integrally formed with the cylindrical outer surface 45 and projecting diagonally outward and downward cylindrical outer surface 45;and internal elastic sealing element 54, which is in contact with the inner surface 48 of the cylindrical portion 17 of the lower shell 22 with its outer providepulmonary edge 50, integrally formed with the cylindrical outer surface 49 and projecting diagonally outward and upward from the cylindrical outer surface 49, and which is also in contact with the outer surface 51 of the inner cylindrical portion 8 of the upper shell 12 of its internal providepulmonary edge 53, integrally formed with the cylindrical inner surface 52 and projecting diagonally inward and downward from the cylindrical inner surface 52.

The annular lower end surface 61 of the outer cylindrical portion 5 of the upper housing 12 is located opposite the annular upper surface 16 of the lower annular plate section 15 of the lower shell 22 with an annular gap 62 between them, and the inner surface 44 of the outer cylindrical portion 5 of the upper shell 12 has an inner surface in the shape of a truncated cone 65, which is continuously connected with the lower surface 25 of the upper annular plate section 2, and which is in contact with the outer providermetadata edge 46 of the outer elastic sealing element 47, and the cylindrical inner surface 66, the annular upper end of which is continuously Conn�Nene with an annular lower end of the inner surface in the shape of a truncated cone 65, and an annular lower end continuously connected to the annular inner edge of the annular lower end surface 61, the cylindrical inner surface 66 is located opposite the cylindrical outer surface 67 of the large diameter of the outer surface 41 of the cylindrical portion 17 with a cylindrical gap 64 between them, and the outer surface 51 of the inner cylindrical portion 8 has a cylindrical outer surface 69 of large diameter, which is continuously connected with the lower surface 25 of the upper annular plate section 2, and a cylindrical outer surface 70 of small diameter, which is continuously connected to the cylindrical outer surface 69 of large diameter and has a smaller diameter, than the cylindrical outer surface 69 of large diameter, and which is connected to the internal providermetadata edge 53 of the internal elastic sealing element 54.

The outer surface 41 of the cylindrical portion 17 of the lower shell 22 has a cylindrical outer surface 75 of small diameter, which is in contact with the inner providermetadata edge 43 of the outer elastic sealing element 47, a cylindrical outer surface 67 of large diameter having a larger diameter than the cylindrical outer surface 75 of the small diameter, kolicevo� stepped surface 76, which is located between the cylindrical outer surface 75 of small diameter and a cylindrical outer surface 67 of large diameter, and which is in contact with the annular lower surface 68 of the outer elastic sealing element 47, and protruding in the radial direction of the cylindrical outer surface 77, the annular upper edge of which is continuously connected to the annular upper surface 20 of the cylindrical portion 17, and which has a larger diameter than the cylindrical outer surface 75 of small diameter, which is in contact with the inner providermetadata edge 43 of the outer elastic sealing element 47, and the inner surface 48 of the cylindrical portion 17 of the lower shell 22 has a cylindrical inner surface of the small diameter 79, continuously connected to the annular inner surface 78 of the lower annular plate section 15, the cylindrical inner surface of the large diameter 80 having a larger diameter than the cylindrical inner surface of the small diameter 79 and continuously connected to the annular upper surface 20 of the cylindrical portion 17, an intermediate cylindrical inner surface 81, which has a larger diameter than the cylindrical inner surface of the small diameter 79, but a smaller diameter than the cylindrical�vessel of the inner surface 80 of large diameter, and which is in contact with the outer providermetadata edge 50 of the inner elastic sealing element, the lower annular stepped surface 83, which is positioned between the cylindrical inner surface 79 of small diameter and an intermediate cylindrical inner surface 81, and which is in contact with the annular lower surface 82 of the inner elastic sealing element 54, the upper annular stepped surface 84 located between the intermediate cylindrical inner surface 81 and the cylindrical inner surface 80 of large diameter, and protruding in the axial direction of the annular stepped surface 86, an annular inner edge which is continuously connected to the annular upper edge of the cylindrical inner surface 79 of the small diameter cylindrical portion 17, and which is closer to the annular lower end surface 85 of the inner cylindrical portion 8 of the upper housing 12 in the axial direction than the lower annular stepped surface 83, which adjoins the annular lower surface 82 of the inner elastic sealing element 54.

The annular lower end surface 85 of the inner cylindrical portion 8 of the upper shell 12, which is continuously connected to the cylindrical outer surface 70 �scarlet diameter of the inner cylindrical portion 8 of the upper shell 12, located opposite the lower annular stepped surface 83 and protruding in the axial direction of the annular stepped surface 86 of the cylindrical portion 17 of the lower shell 22 with an annular gap 87 between them.

Cylindrical outer surface 75 of small diameter, which is in contact with the inner providermetadata edge 43 of the outer elastic sealing element 47 passes in the axial direction between the protruding in the radial direction of the cylindrical outer surface 77 and the annular stepped surface 76, which is in contact with the annular lower surface 68 of the outer elastic sealing element 47, and the lower annular stepped surface 83, which is in contact with the annular lower surface 82 of the inner elastic sealing element 54, is held in the radial direction between the protruding in the axial direction of the annular stepped surface 86 and an intermediate cylindrical inner surface 81.

Outer elastic sealing element 47 has an elastic sealing body 91 with providepulmonary edges 43 and 46 and a metal core 92 that is embedded in the elastic sealing body 91 and the annular lower surface 68 of the outer elastic sealing element 47 has a concentric provideproperty annular protruding over�spine 93 and 94, and elastically comes into contact with the annular stepped surface 76 through the annular protruding surfaces 93 and 94. Similarly, internal elastic sealing element 54 has an elastic sealing body 95 with providepulmonary edges 50 and 53 and a metal core 96 embedded in the elastic sealing body 93, and an annular lower surface 82 of the inner elastic sealing element 54 has a concentric provideproperty annular protruding surfaces 97 and 98, and elastically comes into contact with the lower annular stepped surface 83 through the annular protruding surfaces 97 and 98.

Annular plate section 28 of the host thrust bearing 33 has an annular plate portion 110, which has an annular upper surface 26 and a lot of speakers in the radial direction of sections 113 which is integrally formed with a cylindrical outer surface 111 of the annular plate portion 110, which protrude in a radial direction from the cylindrical outer surface 111 and spaced from each other in the direction R, and which form a set of grooves 112, spaced from each other in the direction R, for the respective protruding sections 21 of the lower shell 22. Annular upper surface 26 is provided with an annular groove 114 and a set of radial grooves 115, one end of each of which opens into the annular groove 114 and the other end goes on the cylindrical outer surface�knosti 111, and which are spaced from each other in the direction R, wherein the annular groove 114 and the radial grooves 115 serve as a sump for lubricating oil, etc. Cylindrical section 31 of the thrust bearing Assembly of the slide 33 has a cylindrical outer peripheral surface 116, which comes in contact with the cylindrical inner surface 80 large diameter and a cylindrical inner peripheral surface 119, which is provided with an axial groove 118, the upper side of each of which faces the inner annular end 29, and the lower side goes on the annular bottom surface 117, and which are spaced the same distance from each other in the direction R. Between the cylindrical outer surface 69 of the large diameter of the outer surface 51 of the inner cylindrical portion 8 of the upper housing 12 and the cylindrical inner surface 80 large diameter of the inner surface 48 of the cylindrical portion 17 of the lower housing 22 is a cylindrical section 31 of the host thrust bearing 33 with a cylindrical clearance between the cylindrical outer surface 69 of a large diameter and a cylindrical inner peripheral surface 119. Axial grooves 118 are malopriemlema for lubrication, etc. similarly, an annular groove 114 and the radial grooves 115.

P�rnevoll the rod of the strut Assembly, mounted in the thrust bearing 1 slide, passes through a through hole 122 formed by a cylindrical inner surface 121, the inner cylindrical portion 8, and through the through hole 124, concentric through-hole 122 and formed by an annular inner surface 78 of the lower annular plate section 15, the cylindrical inner surface of the small diameter 79 of the cylindrical portion 17 and a cylindrical inner surface 123 of the hanging of the cylindrical portion 19. Thus, the thrust bearing 1 slide element mounted between rack assemblies on the vehicle body and the upper nest of coil springs. When the cylindrical coil spring in that the thrust bearing 1 slide under the action of the steering control is rotated around the axis O in the direction R, the upper housing 12 is also rotated in the direction R relative to the lower housing 22. This rotation of the upper housing 12 in the direction R is smooth due to rotation of the annular bottom surface 25 of the upper annular plate section 2 of the upper housing 12 relative to the annular upper surface 26 of the annular plate section 28 of the host thrust bearing 33, which fits between the upper housing 12 and lower housing 22, Reza�the adds which the steering operation is carried out without resistance.

The thrust bearing 1 slide outer elastic sealing element 47 is in contact with the cylindrical outer surface 75 of the small diameter of the outer surface 41 of the cylindrical portion 17 of the lower shell 22 of its internal providepulmonary edge 43, integrally formed with the cylindrical inner surface 42 and projecting diagonally inward from the cylindrical inner surface 42 and is in contact with the inner surface 65 in the form of a truncated cone inner surface of the outer cylindrical portion 5 of the upper shell 12 of its outer providepulmonary edge 46, integrally formed with the cylindrical outer surface 45 and projecting diagonally outward and downward from the cylindrical outer surface 45, and is further in contact with the annular stepped surface 76 of the outer surface of the cylindrical portion 17 of the lower shell 22 of its annular lower surface 68. Internal elastic sealing element 54 is in contact with the intermediate cylindrical inner surface 81 of the inner surface 48 of the cylindrical portion 17 of the lower shell 22 with its outer providepulmonary edge 50, integrally formed with the cylindrical outer surface 49 and projecting diagonally outward and upward from tsilindricheskaya surface 49, and in contact with the cylindrical outer surface 70 of small diameter outer surface 51 of the inner cylindrical portion 8 of the upper housing 12 inner providepulmonary edge 53, integrally formed with the cylindrical inner surface 52 and projecting diagonally inward and downward from the cylindrical inner surface 52, and optionally in contact with the lower annular stepped surface 83 of the inner surface 48 of the cylindrical portion 17 of the lower shell 22 of its annular lower surface 82. Accordingly, even in severe conditions can effectively prevent dust, dirty water, etc. in the annular space 131, which is located between the annular lower surface 25 of the upper annular plate section 2 and the annular upper surface 20 of the cylindrical portion 17 of the lower shell 22, and in which is placed an annular plate section 28 of the host thrust bearing 33, through the annular gap 62 between the annular lower end surface 61 of the outer cylindrical portion 5 of the upper housing 12 and the annular upper surface 16 of the lower annular plate section 15 of the lower shell 22 and through the annular gap 87 between the annular lower end surface 85 of the inner cylindrical participants�and 8 of the upper shell 12 and the lower annular stepped surface 83 and protruding in the axial direction of the annular stepped surface 86 of the cylindrical portion 17 of the lower shell 22, to reduce the occurrence of abnormal noise due to dust, dirty water, etc.

In addition, since the thrust bearing 1 slide annular lower surface 68 of the outer elastic sealing element 47 has provideproperty annular protruding surface 93 and 94, and an annular lower surface 82 of the inner elastic sealing element 54 has provideproperty annular protruding surfaces 97 and 98, due to the elastic deformation of these annular protruding surfaces 93, 94 and 97, 98 may be enhanced by compression of the annular lower surface 68 of the outer elastic sealing element 47 and the annular lower surface 82 of the inner elastic sealing element 54 that can more effectively prevent the ingress of dust, dirty water, etc. in the annular space 131 in which is placed an annular plate section 28 of the node 33 of the thrust sliding bearing, and thereby more satisfactorily reduce the occurrence of abnormal noise due to dust, dirty water, etc.

In addition, since the thrust bearing 1 slide is provided protruding in the radial direction of the cylindrical outer surface 77 and extends in the axial direction of the annular stepped surface 86, can be satisfactorily �ustanavlivate to a predetermined position of the outer elastic sealing element 47 and the inner elastic sealing element 54.

Although, as shown in Fig.10-12, in the thrust bearing 1 slide the inner surface 44 of the outer cylindrical portion 5 of the upper shell 12 has an inner surface 65 in the form of a truncated cone and a cylindrical inner surface 66, instead of the cylindrical inner surface 66 and in addition to the inner surface 65 in the form of a truncated cone inner surface 44 of the outer cylindrical portion 5 of the upper shell 12 may have a truncated upward conical surface 141, the annular upper end of large diameter which is continuously connected to the annular lower end of the inner surface 65 in the form of a truncated cone, and which has an annular lower end of the small diameter has a smaller diameter, than the annular upper end of large diameter and truncated downward conical surface 142, the annular upper end of small diameter which is continuously connected to the annular lower end of the small diameter of the truncated upward tapered surface 141, and which has an annular lower end of the large diameter has a larger diameter than the annular upper end of small diameter. In this case, instead of the cylindrical outer surface 67 of the large diameter outer surface 41 of the cylindrical portion 17 of the lower shell 22 may also be curved in-depth�Ernest 143, shape which complements the shape of a truncated upward tapered surface 141 and truncated downward tapered surface 142, while truncated upward conical surface 141 and truncated downward conical surface 142 can be located in front of such depth curved surface 143 with a gap 144 between them.

In addition, to reduce weight, uniform wall thickness, etc. on the cylindrical section 17 of the lower shell 22 of the thrust bearing 1 slide may be a plurality of recesses 151 cylindrical or triangular prismatic shape, which are spaced the same distance from each other in the direction R and open onto the annular upper surface 20.

A list of items

1: thrust ball bearing

2: the upper annular plate section

3: outer annular end

4: the upper annular end

5: the outer cylindrical section

6: an inner annular end

7: the upper annular end

8: internal cylindrical section

9: annular top surface

10: the upper surface of the

11: annular protruding section

12: top case

15: the lower annular plate section

16: annular top surface

17: an upper cylindrical section

18: annular lower surface

19: hanging cilindri�die plot

20: annular top surface

21: speaker section

22: lower case

26: annular top surface

27: annular lower surface

28: annular plate section

29: an inner annular end

30: the upper annular end

31: an upper cylindrical section

33: host thrust sliding bearing

41: external surface

42: cylindrical internal surface

43: edge

44: the inner surface

45: cylindrical outer surface

46: edge

47: outer elastic sealing element

48: internal surface

49: cylindrical outer surface

50: edge

51: the outer surface

52: cylindrical internal surface

53: edge

54: internal elastic sealing element

1. The thrust sliding bearing made of synthetic resin containing:
upper housing made of synthetic resin containing an upper annular plate section, an outer cylindrical section, the upper annular end of which is integrally formed with the outer annular end of the upper annular plate section, and which hangs down from the outer circumferential end and the inner cylindrical section, the upper annular end of which is integrally formed with the inner ring of the upper end of kalawag� lamellar phase, and which hangs down from the inner circumferential end,
the lower body of a synthetic resin, is superposed on the upper casing rotatably around the axis of the upper shell and having a lower annular plate section and an upper cylindrical section, integrally formed with the annular upper surface of the lower annular plate section and extending vertically upward from the annular upper surface;
the node thrust bearing made of synthetic resin that fit between the upper casing and the lower casing and having an annular plate section, an annular upper surface which is in contact with the annular lower surface of the upper annular plate section, with the possibility of rotation around the axis of the upper shell, and an annular lower surface which is in contact with the annular upper surface of the cylindrical portion of the lower shell, and an upper cylindrical section, the upper annular end of which is integrally formed with an inner annular end of the annular plate section, and which hangs down from the inner circumferential end,
outer elastic sealing element which is in contact with the outer surface of the cylindrical portion of the lower shell of its internal providepulmonary edge, integrally formed with the cylinder�historical inner surface and projecting diagonally inward and upward from the cylindrical inner surface, and which is in contact with the inner surface of the outer cylindrical portion of the upper shell of his outer providepulmonary edge, integrally formed with its cylindrical outer surface and projecting diagonally outward and downward from the cylindrical outer surface, and
internal elastic sealing element which is in contact with the inner surface of the cylindrical lower housing its outer providepulmonary edge, integrally formed with its cylindrical outer surface and projecting diagonally outward and upward from the cylindrical outer surface, and which is in contact with the outer surface of the inner cylindrical portion of the upper shell of its internal providepulmonary edge, integrally formed with its cylindrical inner surface and projecting diagonally inward and downward from the cylindrical inner surface,
the annular lower end surface of the outer upper cylindrical portion of the housing located opposite the annular upper surface of the lower annular plate portion of the bottom of the housing with a gap between them,
the inner surface of the outer cylindrical portion of the upper shell has an internal surface in the form of a truncated cone,which is continuously connected with the lower surface of the upper annular plate section and which is in contact with the outer providermetadata edge of the outer elastic sealing element,
the outer surface of the cylindrical portion of the lower shell has a cylindrical outer surface of small diameter, which is in contact with the inner providermetadata edge of the outer elastic sealing element, the cylindrical outer surface of large diameter having a larger diameter than the cylindrical outer surface of the small diameter, and an annular stepped surface which is located between the cylindrical outer surface of the small diameter and the cylindrical outer surface of the large diameter, and which is in contact with the annular lower surface of the outer elastic sealing element,
the outer surface of the inner cylindrical portion of the upper shell has a cylindrical outer surface of large diameter, which is continuously connected with the lower surface of the upper annular plate section, and a cylindrical outer surface of small diameter, which is continuously connected to the cylindrical outer surface of large diameter and has a smaller diameter than the cylindrical outer surface of large diameter, and which is in contact with the inner provideproperty the inner edge of the elastic sealing element,
the inner surface of the cylindrical portion of the lower shell has a C�cylindrical inner surface of small diameter, continuously connected to the annular inner surface of the lower annular plate portion of the bottom of the housing, the cylindrical inner surface of large diameter having a larger diameter than the cylindrical inner surface of the small diameter, and continuously connected to the annular upper surface of the cylindrical portion of the lower shell, an intermediate cylindrical inner surface which has a larger diameter than the cylindrical inner surface of the small diameter, but a smaller diameter than the cylindrical inner surface of large diameter, and which is in contact with the outer provideproperty the inner edge of the elastic sealing element, the lower annular stepped surface, which is located between the cylindrical inner surface of small diameter and an intermediate cylindrical inner surface, and which is in contact with the annular lower surface of the inner elastic sealing element, and an upper annular stepped surface which is located between the intermediate cylindrical inner surface and a cylindrical inner surface of large diameter,
the annular lower end surface of the inner cylindrical portion of the upper shell, which is continuously connected�ena with the cylindrical outer surface of the small diameter inner cylindrical portion of the upper housing and is located opposite the annular stepped surface of the cylindrical portion of the lower casing with a clearance between them, and
the cylindrical section of the node thrust sliding bearing which is located between the cylindrical outer surface of the large diameter outer surface of the inner cylindrical portion of the upper shell and the cylindrical inner surface of the large diameter of the inner surface of the cylindrical portion of the lower shell.

2. The thrust sliding bearing made of synthetic resin according to claim 1, wherein the inner surface of the outer cylindrical portion of the upper shell has a cylindrical inner surface, the annular upper end of which is continuously connected to the annular lower end of the inner surface in the shape of a truncated cone, and an annular lower end of which is continuously connected to the annular inner edge of the annular lower end surface of the outer cylindrical portion of the upper shell.

3. The thrust sliding bearing made of synthetic resin according to claim 1, wherein the inner surface of the outer cylindrical portion of the upper shell has a truncated upward conical surface, an annular upper end of large diameter which is continuously connected to the annular lower end of the inner surface in the shape of a truncated cone, and which has an annular lower end of small diameter with a smaller diameter than kolicevo�about the upper end of large diameter, and truncated downward conical surface, an annular upper end of small diameter which is continuously connected to the annular lower end of the small diameter of the truncated upward tapered surface, and which has an annular lower end of the large diameter with a larger diameter than the annular upper end of small diameter.

4. The thrust sliding bearing made of synthetic resin according to claim 1, wherein each of the outer elastic sealing element and the inner elastic sealing elastic sealing element contains a housing having a corresponding provideproperty edges and the metal core embedded in the elastic sealing body.

5. The thrust sliding bearing made of synthetic resin according to claim 1, wherein the lower case has a plurality of protruding sections, integrally formed with the annular upper surface of its cylindrical portion and spaced from each other in the axial direction, and the annular plate portion of the host thrust bearing has a plurality of recesses or slots, which include respective projecting portions of the plurality of protruding parts of the lower body.

6. The thrust sliding bearing made of synthetic resin according to claim 1, wherein the annular lower surface of the outer elastic sealing element has at least one elastic�deformiruemoi annular protruding surface.

7. The thrust sliding bearing made of synthetic resin according to claim 1, wherein the annular lower surface of the inner elastic sealing element has at least one providepulmonary annular protruding surface.

8. The thrust sliding bearing made of synthetic resin according to claim 1, wherein the outer surface of the cylindrical portion of the lower shell has a protruding in the radial direction of the cylindrical outer surface, the annular upper edge of which is continuously connected to the annular upper surface of the cylindrical portion, and which has a larger diameter than the cylindrical outer surface of small diameter, which is in contact with the inner providermetadata edge of the outer elastic sealing member, the cylindrical outer surface of small diameter, which is in contact with the inner providermetadata edge of the outer elastic sealing element, passes in the axial direction between the protruding in the radial direction of the cylindrical outer surface and an annular stepped surface which is in contact with the annular lower surface of the outer elastic sealing element.

9. The thrust sliding bearing made of synthetic resin according to claim 1, wherein the inner surface of the cylindrical phase� lower housing has a protruding in the axial direction of the annular stepped surface, the annular inner edge which is continuously connected to the annular upper edge of the cylindrical inner surface of large diameter cylindrical section, and which is located closer to the annular lower end surface of the inner cylindrical portion of the upper shell in the axial direction than the lower annular stepped surface which is in contact with the annular lower surface of the inner elastic sealing element, the lower annular stepped surface which is in contact with the annular lower surface of the inner elastic sealing element is held in the radial direction between the protruding in the axial direction of the annular stepped surface and the intermediate cylindrical inner surface.



 

Same patents:

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: 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: 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

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

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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