Thrust bearing positioning ring, thrust bearing assembly and transmission assembly

Abstract

The utility model provides a thrust bearing locating ring, a thrust bearing assembly and a transmission assembly, and belongs to the technical field of mechanical transmission, the thrust bearing locating ring comprises two symmetrically-arranged semi-annular shock insulators, a retaining ring and a limiting piece, and the retaining ring is arranged on the outer sides of the two semi-annular shock insulators in a sleeving mode; the limiting piece is connected to the outer side of the semicircular isolation pad, protrudes out of the outer side wall of the semicircular isolation pad and is attached to the end, away from a gasket on the right side of the thrust bearing, of the retaining ring. According to the thrust bearing positioning ring provided by the utility model, the limiting piece is used for being attached to the outer side of the retaining ring to prevent the retaining ring from falling off; furthermore, the two semicircular ring-shaped isolation pads are prevented from being separated from the input shaft, and the stability and reliability of the positioning structure are improved; in addition, the limiting piece prevents the retaining ring from being disengaged in an attaching and abutting mode, the problem that punching and riveting operation on the retaining ring is inconvenient is solved, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical transmission, and more specifically, relates to a thrust bearing locating ring, a thrust bearing assembly and a transmission assembly. Background Art

[0002] Usually, the transmission uses more gears to ensure that the engine works in the high-efficiency range as much as possible. However, when the transmission gears exceed 6, the structure becomes quite complicated, which is not conducive to production and manufacturing; therefore, one or two auxiliary boxes are usually designed to increase the transmission gears exponentially.

[0003] When two auxiliary gearboxes are used, the front auxiliary gearbox will have a constant mesh gear that is used as a constant mesh reduction gear and also as a gear position gear. When the gear is used as a gear position gear, it will rotate relative to the shaft supporting the gear. Therefore, if a helical gear is used, the axial limit method between the gear and the shaft should be a thrust bearing limiter.

[0004] At present, the axial limit mode of the thrust bearing is usually as follows: the left side gasket of the thrust bearing is axially limited by the shaft step of the input shaft. Two semicircular ring spacers are designed at the right side gasket of the thrust bearing to clamp on the input shaft to form an axial limit. At the same time, the outer side of the two semicircular ring spacers is wrapped by a ring-shaped sheet metal to prevent the two semicircular ring spacers from being thrown away due to centrifugal force during rotation. When assembling this axial limit structure, it is necessary to first install the two semicircular ring spacers on the input shaft, and then put the ring-shaped sheet metal on the outer side of the two semicircular ring spacers, and finally prevent them from falling by riveting the sheet metal.

[0005] However, the sheet metal parts may not be riveted properly during the riveting process, which may cause the sheet metal parts to fall off easily. In addition, the operating space is small during assembly, which is not convenient for riveting operations. Therefore, the thrust bearing has problems of inconvenient operation, low assembly reliability and low assembly efficiency during assembly. Utility Model Content

[0006] The utility model aims to provide a thrust bearing locating ring, a thrust bearing assembly and a transmission assembly, aiming to solve the problem that the retaining ring is easy to fall off and the assembly efficiency is low.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a thrust bearing locating ring, a thrust bearing assembly and a transmission assembly, wherein the thrust bearing locating ring includes a thrust pad, a retaining ring and a limit piece, the thrust pad includes two symmetrically arranged semicircular ring spacers, the inner side of the semicircular ring spacer has a first limit portion for limiting the axial movement of the thrust pad, the retaining ring is sleeved on the outer side of the thrust pad, the limit piece is connected to the outer side of the thrust pad, and the limit piece has a second limit portion that can limit the axial movement of the retaining ring.

[0008] As another embodiment of the present application, the limit member is snap-connected to the outer side of the thrust pad, a connecting groove is provided on the outer peripheral surface of the thrust pad, and the limit member has a snap-fitting portion snap-fitted with the connecting groove.

[0009] As another embodiment of the present application, the limiting member is a shaft retaining ring, the clamping portion is located on the inner side of the shaft retaining ring, and the second limiting portion is located on the end surface of the shaft retaining ring facing the retaining ring.

[0010] As another embodiment of the present application, the first limiting portion is a positioning boss located on the inner side of the semicircular ring-shaped spacer, and the positioning boss extends along the radial direction of the semicircular ring-shaped spacer.

[0011] As another embodiment of the present application, one end surface of the positioning boss is flush with one end surface of the semicircular ring spacer, and the other end surface of the positioning boss is spaced apart from the limiting member in the axial direction.

[0012] The beneficial effect of the thrust bearing locating ring provided by the utility model is that: compared with the prior art, the thrust bearing locating ring of the utility model is provided with a limit piece installed on the semicircular ring-shaped spacer on the right side of the retaining ring, the outer side of the limit piece protrudes from the outer side of the semicircular ring-shaped spacer, and the limit piece is used to fit on the outer side of the retaining ring to prevent the retaining ring from falling off; thereby preventing the two semicircular ring-shaped spacers from separating from the input shaft, and improving the stability and reliability of the positioning structure; in addition, the limit piece prevents the retaining ring from falling off by fitting and abutting, avoiding the problem of inconvenient operation of drilling and riveting on the retaining ring, and improving the assembly efficiency.

[0013] A thrust bearing assembly is also provided, characterized in that it includes an input shaft, a left side gasket of a thrust bearing, a left side thrust bearing, a gear ring, a right side thrust bearing, a right side gasket of a thrust bearing and the above-mentioned thrust bearing locating ring.

[0014] As another embodiment of the present application, the input shaft is a stepped shaft having a step on the left side, and the left side gasket of the thrust bearing, the left side thrust bearing, the gear ring, the right side thrust bearing, and the right side gasket of the thrust bearing are abutted in sequence and are all sleeved on the small diameter end of the input shaft, the left side gasket of the thrust bearing abuts against the step, and the right side gasket of the thrust bearing abuts against the thrust bearing positioning ring.

[0015] As another embodiment of the present application, a groove which cooperates with the first limiting portion is provided on the small diameter end of the input shaft, the thrust washer is sleeved on the small diameter end of the input shaft, and the first limiting portion is at least partially located in the groove.

[0016] As another embodiment of the present application, one end surface of the retaining ring faces the right side gasket of the thrust bearing, and the other end surface of the retaining ring abuts against the second limiting portion.

[0017] The thrust bearing assembly provided by the utility model has the beneficial effect that, compared with the prior art, the thrust bearing assembly of the utility model transmits the axial force exerted on the gear to the input shaft through the two left and right thrust bearings; in particular, the two semicircular ring spacers on the right side thereof increase the bearing area of ​​the right thrust bearing and improve the reliability of the transmission process. The retaining ring and the limiter cooperate to fix the two semicircular ring spacers, simplifying the assembly steps and improving the assembly efficiency.

[0018] A transmission assembly is also provided, characterized in that the thrust bearing assembly is adopted.

[0019] The beneficial effect of the thrust bearing assembly provided by the utility model is that: compared with the prior art, the transmission assembly of the utility model adopts the above-mentioned thrust bearing assembly, which has all the beneficial effects thereof, improves the reliability of the transmission process, simplifies the assembly steps, and improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a thrust bearing provided in an embodiment of the utility model;

[0022] Figure 2 A right side view of a thrust bearing is provided for an embodiment of the utility model.

[0023] In the figure: 1, input shaft; 2, left side gasket of thrust bearing; 3, left side thrust bearing; 4, retaining ring for hole; 5, gear; 6, gear ring; 7, right side thrust bearing; 8, right side gasket of thrust bearing; 9, first semicircular annular spacer; 10, second semicircular annular spacer; 11, retaining ring for shaft; 12, retaining ring. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] See also Figure 1 and Figure 2 The thrust bearing locating ring, thrust bearing assembly and transmission assembly provided by the utility model are now described. The thrust bearing locating ring includes a thrust pad, a retaining ring 12 and a stopper; the thrust pad includes two symmetrically arranged semicircular ring spacers, the inner side of the semicircular ring spacers has a first stopper for limiting the axial movement of the thrust pad; the retaining ring 12 is sleeved on the outer side of the thrust pad; the stopper is connected to the outer side of the thrust pad, and the stopper has a second stopper for limiting the axial movement of the retaining ring 12.

[0026] Compared with the prior art, the thrust bearing positioning ring provided by the utility model has a first limiting portion that limits the axial movement of the thrust pad; a retaining ring is sleeved on the outside of the thrust pad to limit the radial movement of the thrust pad; a second limiting portion of the limiting member arranged on the outside of the thrust pad limits the axial movement of the retaining ring to prevent the retaining ring from falling off; thereby preventing the two semicircular ring spacers from separating from the input shaft 1, thereby improving the stability and reliability of the positioning structure; in addition, the limiting member prevents the retaining ring 12 from falling off by fitting and abutting, thereby avoiding the inconvenience of drilling and riveting on the retaining ring 12 and improving the assembly efficiency.

[0027] The outer side of the limiting member protrudes beyond the outer edge of the thrust pad, the second limiting portion of the limiting member is located outside the thrust pad, and the second limiting portion is attached to the end face of the retaining ring 12 .

[0028] The limiting member may be an annular sheet structure, which is sleeved on the annular structure composed of two semicircular ring spacers and is interference fit with the two semicircular ring spacers. The two semicircular ring spacers are a first semicircular ring spacer 9 and a second semicircular ring spacer 10, which are arranged opposite to each other and wrapped around the outside of the input shaft 1 to form a thrust pad. The structures of the first semicircular ring spacer 9 and the second semicircular ring spacer 10 are completely consistent.

[0029] Considering that the interference fit method is inconvenient to disassemble and assemble, the limiter is clamped on the outside of the semicircular ring spacer. The clamping method avoids the inconvenience of rivets and interference fit methods during the assembly process.

[0030] With respect to the structure of the thrust bearing, the left side gasket 2 of the thrust bearing forms an axial limit with the shaft step of the input shaft 1. After the right side gasket 8 of the thrust bearing is installed, two semicircular ring spacers are installed. The semicircular ring spacers are fixed to the outside of the input shaft 1 through the retaining ring 12. The semicircular ring spacers are fixedly connected to the input shaft 1 and rotate synchronously with the input shaft 1. When the limiter is installed, the limiter is located on the right side of the retaining ring 12 to prevent the retaining ring 12 from falling out from the right side. The two semicircular ring spacers increase the contact area between the right side gasket 8 of the thrust bearing and the input shaft 1, and improve the reliability of force transmission. The retaining ring 12 is clamped on the outside of the two semicircular ring spacers to prevent the semicircular ring spacers from detaching from the input shaft 1 under the action of centrifugal force. The retaining ring 12 is fixed with the help of the limiter, which can avoid the problem of loose riveting on the retaining ring 12, and also solve the problem of small assembly space and inconvenient riveting work.

[0031] In some possible embodiments, see Figure 1 The limiting member is connected to the outer side of the thrust pad by snapping, a connecting groove is provided on the outer peripheral surface of the thrust pad, and the limiting member has a snap-fitting portion that is snap-fitted with the connecting groove.

[0032] The thrust pad, retaining ring 12 and stopper are all formed with the side close to the input shaft 1 as the inner side and the side away from the input shaft 1 as the outer side. For example, the side surface of the thrust pad that is in contact with the input shaft 1 is the inner circumference; the side surface of the thrust pad that is away from the input shaft 1 is the outer circumference. Since the thrust pad includes a first semicircular ring-shaped spacer 9 and a second semicircular ring-shaped spacer 10 that are arranged opposite to each other, the inner circumference of the thrust pad refers to the inner circumference surrounded by the first semicircular ring-shaped spacer 9 and the second semicircular ring-shaped spacer 10, and the inner circumference is in contact with the input shaft 1.

[0033] The depth direction of the connecting groove opened on the outer peripheral surface of the semicircular ring spacer is along the radial direction of the semicircular ring spacer; and the connecting grooves of the two semicircular ring spacers are symmetrically arranged and have the same depth. The connecting groove and the inner side of the limiter are clamped, and the clamping method can be plug-in, mortise and tenon clamping, elastic clamping, etc. Correspondingly, the limiter can adopt a sheet structure.

[0034] If the mortise and tenon joint is adopted, the width of the connecting groove gradually increases from the open end toward the bottom of the groove. The inner side of the limiter is extended into the connecting groove by external force and fixed by a wedge. There are multiple limiters, and the multiple limiters are evenly distributed around the circumference of the input shaft 1. The inner sides of the multiple limiters are provided with extensions, which are in an inclined state and consistent with the inclination angle of the side wall of the connecting groove; during installation, the extension is extended into the connecting groove and fits the extension to the wedge; under the action of external force, the extension is clamped between the wedge and the side wall of the connecting groove. Or the extensions on the inner side of multiple limiters are two sheets arranged at intervals along the thickness direction of the limiter, and the wedge is located between the two sheets, and the two sheets are squeezed and deformed under the action of external force, thereby fixing the limiter in the connecting groove.

[0035] If elastic clamping is adopted, the width of the connecting groove gradually increases from the open end toward the groove bottom, or an elastic cavity is formed at the position of the groove bottom; there are multiple limiters, and the multiple limiters are evenly distributed around the circumference of the input shaft 1. An elastic body extending to one side or both sides along the thickness direction of the limiter is arranged on the inner side of the limiter, and the elastic body passes through the open end of the connecting groove and extends into the inner cavity or elastic cavity of the connecting groove in a squeezed state, and the elastic body is elastically expanded by itself to fix the limiter in the connecting groove.

[0036] In some possible embodiments, see Figure 1 The limiting member is an elastic ring with an opening, and the inner circumference of the limiting member is connected to the connecting groove.

[0037] The annular stopper has an open end, the width of which is smaller than the diameter of the circle where the groove bottom of the connecting groove is located. When the stopper is installed, the opening is opened by external force to increase the width of the opening so that the opening can pass through the two semicircular ring spacers limited by the retaining ring 12; and the stopper is located on the right side of the retaining ring 12.

[0038] After the opening of the stopper passes through the two semicircular ring spacers, the external force is removed, and the stopper retracts under its own elastic force to wrap around the outside of the two semicircular ring spacers. To improve its stability, the stopper retracts into the annular connecting groove. The annular connecting groove is formed by connecting the connecting grooves of the two semicircular ring spacers.

[0039] The thickness of the stopper is greater than the depth of the connecting groove, and the outer peripheral surface of the stopper is located outside the semicircular ring spacer. The portion of the stopper protruding from the connecting groove fits on the end surface of the retaining ring 12, and the retaining ring 12 is pressed against the right side gasket 8 of the thrust bearing.

[0040] Optionally, the limiting member can be a shaft clamp ring 11, the clamping portion is located on the inner side of the shaft clamp ring 11, and the second limiting portion is located on the end surface of the shaft clamp ring facing the retaining ring 12. The shaft clamp ring 11 is opened by a caliper, and after being sleeved in the connecting groove, the caliper is removed, and the inner clamping portion of the shaft clamp ring 11 is clamped in the connecting groove. The shaft clamp ring 11 can be a double-hole shaft retaining ring.

[0041] When the stopper is a shaft clamp 11, it is also convenient for disassembly and replacement of parts. When parts need to be replaced, firstly, the opening of the shaft clamp 11 is opened with a caliper, and the inner circumference of the shaft clamp 11 is separated from the connection groove by increasing the opening; the inner diameter of the shaft clamp 11 is larger than the outer diameter of the annular structure after the semicircular spacers are combined, and the shaft clamp 11 is removed from the annular structure; then the retaining ring 12, two semicircular spacers and other parts are removed in turn for inspection and replacement.

[0042] In another embodiment, a plurality of spaced-apart limiting protrusions are provided on the inner circumferential surface of the limiting member, and the limiting protrusions extend radially toward the center of the limiting member; there are a plurality of connecting grooves, and the plurality of connecting grooves correspond one-to-one to the plurality of limiting protrusions.

[0043] The clamping part on the inner circumference of the elastic ring is provided with a plurality of limiting protrusions, and the connecting grooves are also arranged at intervals. During installation, the plurality of limiting protrusions correspond to the plurality of connecting grooves one by one. When the elastic ring is sleeved on the outer side of the semicircular ring-shaped spacer and the limiting protrusions correspond to the connecting grooves, the external force is removed, and the elastic ring rebounds inwards and presses against the outer side of the semicircular ring-shaped spacer under the action of its own elastic force; the limiting protrusions on the inner circumference of the elastic ring extend into the connecting groove under the rebound action of the elastic ring and are clamped with the connecting groove.

[0044] Optionally, an extension groove is provided at the bottom of the connecting groove, and the connecting groove is an annular groove. There are multiple extension grooves, and the multiple extension grooves are evenly distributed at the bottom of the connecting groove. The inner side of the elastic ring extends to the connecting groove, and the limiting protrusion on the inner side of the elastic ring extends into the extension groove.

[0045] In some possible embodiments, the limiter is an arc-shaped structure; a plurality of limiters are spaced apart along the circumference of the semicircular ring-shaped spacer. The limiter is a plurality of arc-shaped plate-like structures uniformly distributed on the circumference of the ring-shaped spacer formed by the combination of two semicircular ring-shaped spacers. The inner side of the limiter is correspondingly engaged with the connecting groove on the semicircular ring-shaped spacer. The limiter is an arc-shaped structure, and its two side edges are consistent with the radial direction. The arc length of the limiter gradually increases from the inside to the outside to ensure the contact area between the limiter and the retaining ring 12.

[0046] In some possible embodiments, see Figure 1 The first limiting portion is a positioning boss on the inner side of the semicircular ring-shaped spacer; the positioning boss extends along the radial direction of the semicircular ring-shaped spacer.

[0047] There are one or more positioning bosses. When there is one positioning boss, the extending direction of the positioning boss is consistent with the radial direction of the semicircular ring spacer. The positioning boss is used to connect to the groove on the outside of the input shaft 1. In addition to increasing the contact area between the semicircular ring spacer and the input shaft 1, the positioning boss is also used to achieve the positioning of the semicircular ring spacer.

[0048] The positioning boss is a rectangular block.

[0049] When there are multiple positioning bosses, the positioning bosses are arranged at intervals on the inner circumference of the semicircular ring spacer. Correspondingly, corresponding grooves are provided on the input shaft 1. To improve the connection strength, the number of positioning bosses is less than three.

[0050] In some possible embodiments, see Figure 1 , one end face of the positioning boss is flush with one end face of the semicircular ring spacer, and the other end face of the positioning boss is spaced apart from the stopper in the axial direction. Specifically, the positioning boss is located on the left side of the connecting groove, and the positioning boss and the connecting groove are staggered to avoid affecting the rigidity of the semicircular ring spacer. The axial width of the positioning boss is consistent with the axial width of the connecting groove, or the axial width of the positioning boss is greater than the axial width of the connecting groove.

[0051] Optionally, the left end face of the positioning boss is flush with the left end face of the semicircular ring spacer. The left end face of the positioning boss and the left end face of the semicircular ring spacer are in the same plane, and the two are integrally formed. During operation, the end face contacts the input shaft 1 and the right side gasket 8 of the thrust bearing at the same time, making it easier to transmit the force of the right side gasket 8 of the thrust bearing to the input shaft 1.

[0052] The connecting groove is spaced apart from the right end surface of the semicircular ring-shaped spacer. Preferably, the connecting groove is opened in the middle of the semicircular ring-shaped spacer along the axial direction.

[0053] In some possible embodiments, see Figure 1 The thickness of the semicircular ring spacer protruding from the limiting member is smaller than the thickness of the retaining ring 12, which is convenient for installation and removal.

[0054] The utility model also provides a thrust bearing assembly, including an input shaft 1, a left side gasket 2 of a thrust bearing, a left side thrust bearing 3, a gear 5, a gear ring 6, a hole snap ring 4, a right side thrust bearing 7, a right side gasket 8 of a thrust bearing and the above-mentioned thrust bearing positioning ring. The right side gasket 8 of the thrust bearing is positioned by cooperating with a semicircular annular spacer, a retaining ring 12 and a limiting member, thereby improving the installation stability and assembly convenience of the thrust bearing.

[0055] The input shaft 1 is a stepped shaft with a step on the left side. The left side gasket 2 of the thrust bearing, the left side thrust bearing 3, the gear ring 6, the right side thrust bearing 7, and the right side gasket 8 of the thrust bearing are abutted in sequence and are all sleeved on the small diameter end of the input shaft 1. The left side gasket 2 of the thrust bearing abuts against the step, and the right side gasket 8 of the thrust bearing abuts against the thrust bearing locating ring.

[0056] During assembly, the gear ring 6 is connected to the gear 5 through a spline, and the hole snap ring 4 is installed in the snap ring groove on the left side of the gear 5 and is firmly attached to the left side of the gear ring 6. The left side gasket 2 of the thrust bearing and the left side thrust bearing 3 are loosely sleeved on the input shaft 1 in sequence, and the left side gasket 2 of the thrust bearing is firmly attached to the step of the input shaft 1; the gear ring 6, the gear 5, and the hole snap ring 4 are loosely sleeved on the input shaft 1; then the right side thrust bearing 7 and the right side gasket 8 of the thrust bearing are installed in sequence. The two sides of the gear ring 6 are firmly attached to the left side thrust bearing 3 and the right side thrust bearing 7 respectively.

[0057] A groove is provided on the small diameter end of the input shaft 1 to cooperate with the first limiting part, the thrust washer is sleeved on the small diameter end of the input shaft 1, and the first limiting part is at least partially located in the groove. One end face of the retaining ring 12 faces the right side gasket 8 of the thrust bearing, and the other end face of the retaining ring 12 abuts against the second limiting part.

[0058] Specifically, two semicircular ring-shaped spacers are clamped on the groove of the input shaft 1 and are firmly attached to the right side gasket 8 of the thrust bearing. The retaining ring 12 is sleeved on the two semicircular ring-shaped spacers and assembled into the connecting groove of the two semicircular ring-shaped spacers by means of a limiting member. The limiting member is, for example, a shaft clamping ring 11. The limiting member has a second limiting portion on the end surface of the side close to the retaining ring 12, and the second limiting portion abuts against the retaining ring 12.

[0059] Compared with the prior art, the thrust bearing assembly provided by the utility model adopts the above-mentioned thrust bearing positioning ring and has all the beneficial effects thereof; the thrust bearing assembly transmits the axial force exerted on the gear 5 to the input shaft 1 through the two left and right thrust bearings; the left gasket 2 of the thrust bearing on the left side bears the axial force of the left thrust bearing 3, and transmits the axial force to the input shaft 1 with the help of the shoulder of the input shaft 1; the two semicircular annular spacers on the right side are combined to form an annular spacer structure, which increases the bearing area of ​​the right thrust bearing 7 and improves the reliability of the transmission process. The retaining ring 12 and the limiter are used in combination to fix the two semicircular annular spacers, which simplifies the assembly steps and improves the assembly efficiency.

[0060] A transmission assembly is also provided, comprising the thrust bearing assembly.

[0061] When the transmission is working, since the transmission gear 5 is a helical gear 5, an axial force is bound to be generated during the meshing process. When the gear 5 is subjected to the axial force to the left, the gear 5 transfers the axial force to the gear ring 6. The left side of the gear ring 6 is in close contact with the left thrust bearing 3, so the axial force is transferred to the left thrust bearing 3. The left thrust bearing 3 transfers the axial force to the left gasket 2 of the thrust bearing, and finally to the input shaft 1. When the gear 5 is subjected to the axial force to the right, the gear 5 transfers the axial force to the gear ring 6 through the hole snap ring 4. The right side of the gear ring 6 is in close contact with the right thrust bearing 7, so the axial force is transferred to the right thrust bearing 7. The right thrust bearing 7 transfers the axial force to the right gasket 8 of the thrust bearing. The right gasket 8 of the thrust bearing is in close contact with the two semicircular annular spacers, and the two semicircular annular spacers are both stuck in the groove of the input shaft 1, so the axial force is transferred to the input shaft 1.

[0062] Compared with the prior art, the transmission assembly provided by the utility model adopts the above-mentioned thrust bearing assembly, which has all the beneficial effects thereof, improves the reliability of the transmission process, simplifies the assembly steps, and improves the assembly efficiency.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Thrust bearing locating ring, characterized in that: The invention comprises a thrust pad, a retaining ring (12) and a limiting member, wherein the thrust pad comprises two symmetrically arranged semicircular ring spacers, the inner side of the semicircular ring spacers comprises a first limiting portion for limiting the axial movement of the thrust pad, the retaining ring (12) is sleeved on the outer side of the thrust pad, the limiting member is connected to the outer side of the thrust pad, and the limiting member comprises a second limiting portion for limiting the axial movement of the retaining ring (12).

2. The thrust bearing locating ring according to claim 1, characterized in that: The limiting member is connected to the outer side of the thrust pad by snapping, a connecting groove is provided on the outer peripheral surface of the thrust pad, and the limiting member has a snap-fitting portion snap-fitted with the connecting groove.

3. The thrust bearing locating ring according to claim 2, characterized in that: The limiting member is a shaft retaining ring (11), the clamping portion is located on the inner side of the shaft retaining ring (11), and the second limiting portion is located on the end surface of the shaft retaining ring (11) facing the retaining ring (12).

4. The thrust bearing locating ring according to claim 1, characterized in that: The first limiting portion is a positioning boss located inside the semicircular ring-shaped spacer, and the positioning boss extends along the radial direction of the semicircular ring-shaped spacer.

5. The thrust bearing locating ring according to claim 4, characterized in that: One end surface of the positioning boss is flush with one end surface of the semicircular ring spacer, and the other end surface of the positioning boss is spaced apart from the limiting member in the axial direction.

6. Thrust bearing assembly, characterized in that: It comprises an input shaft (1), a left side gasket (2) of a thrust bearing, a left side thrust bearing (3), a gear ring (6), a right side thrust bearing (7), a right side gasket (8) of a thrust bearing and a thrust bearing locating ring as claimed in any one of claims 1 to 5.

7. The thrust bearing assembly according to claim 6, characterized in that: The input shaft (1) is a stepped shaft with a step on the left side; the left side gasket (2) of the thrust bearing, the left side thrust bearing (3), the gear ring (6), the right side thrust bearing (7), and the right side gasket (8) of the thrust bearing are abutted in sequence and are all sleeved on the small diameter end of the input shaft (1); the left side gasket (2) of the thrust bearing abuts against the step, and the right side gasket (8) of the thrust bearing abuts against the thrust bearing positioning ring.

8. The thrust bearing assembly according to claim 7, characterized in that: The small diameter end of the input shaft (1) is provided with a groove which cooperates with the first limiting portion in a limiting manner, the thrust washer is sleeved on the small diameter end of the input shaft (1), and the first limiting portion is at least partially located in the groove.

9. The thrust bearing assembly according to claim 7, characterized in that: One end surface of the retaining ring (12) faces the right side gasket (8) of the thrust bearing, and the other end surface of the retaining ring (12) abuts against the second limiting portion.

10. A transmission assembly, characterized in that: Comprising a thrust bearing assembly as described in any one of claims 6-9.

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