V-shaped thrust retainer

Abstract

The invention discloses a V-shaped thrust retainer which comprises an annular main body, and the annular main body is provided with pockets for mounting a rotating body; the pocket is provided with a V-shaped limiting part for limiting the rotation body to move in the axial direction of the pocket; the annular body is further provided with an outer oil storage part for containing lubricating oil, a buffering part and a buffering ring, the buffering part is arranged between every two adjacent pockets, an oil storage cavity is formed in each buffering part, and the buffering ring is arranged on the side wall of the inner ring of the annular body. Compared with a traditional arc-shaped / annular flange and other structures, the V-shaped limiting part can reduce the contact area of the rotating part and the limiting structure, friction loss is reduced, and lubricating oil consumption is reduced; by arranging the buffering part, the buffering layer can play a role in absorbing and damping, so that the rolling path of the rotating body can be kept stable, collision impact and vibration generated in the rolling process are further reduced through the stability of the rotating body, and finally the damping and noise reduction effects of the retainer and the bearing are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of bearing retainers, and in particular to a V-type thrust retainer. Background Art

[0002] In existing industrial production equipment or daily necessities, thrust ball bearings are a common shaft-type supporting part and a universal part for installing various types of shafts, so they are widely used. Thrust ball bearings mainly bear axial loads. Thrust ball bearings mainly include two upper and lower annular pressure rings, a retaining frame located between the two pressure rings, and balls installed on the retaining frame. The retaining frame of a traditional thrust ball bearing is usually a whole piece structure, and a circumferentially closed receiving hole for accommodating balls is provided on the retaining frame. The balls need to be inserted into the receiving holes along the axial direction of the receiving holes to complete the installation of the balls and the retaining frame. Although this structure is conducive to ensuring the stability of the assembly structure between the balls and the retaining frame, the wear and frictional heat between the balls and the retaining frame are more serious due to the large contact area between the balls and the circumferentially closed receiving holes.

[0003] In the prior art, there is also a thrust retainer that uses a pocket hole that is open on one side to install the rotating body. When this structure is used, in order to ensure the stability of the installation of the rotating body, the prior art will also set a ring / arc-shaped limiter at the end of the pocket hole to limit the rotating body along the axial direction of the pocket hole. However, when the above structure is used, the lubricating oil and / or grease can only enter between the ball and the receiving hole through the edge of the receiving hole, and there is a problem of poor flow leading to insufficient lubrication. The setting of the limiter will also block the flow of lubricating oil and / or grease, and the serious friction heat will also accelerate the consumption of lubricating oil and / or grease, which is prone to insufficient lubrication, resulting in serious wear of the rotating body / retainer / bearing outer ring and other structures. At the same time, the poor flow of lubricating grease and the accumulation between the rotating body, the pocket hole, and the inner and outer rings of the bearing will also affect the stability of the rotating path of the rotating body, which is likely to increase the impact vibration between the rotating body, the retainer and the inner and outer rings of the bearing, resulting in a reduction in the service life of the retainer, the rotating body and the inner and outer rings of the bearing, affecting the normal use of the bearing.

[0004] This shows that the prior art still has certain defects. Summary of the invention

[0005] The purpose of the present invention is to provide a V-type thrust cage to solve the problem that the existing thrust cage using a single-side open pocket to install a rotating body is prone to insufficient lubrication, resulting in serious wear of the rotating body / cage / bearing outer ring and other structures.

[0006] To achieve the above-mentioned object, the present invention provides a V-type thrust retainer, comprising an annular body, the annular body is provided with a plurality of pockets for mounting a rotating body; the pockets are provided with a V-shaped limiting portion, the V-shaped limiting portion extends along the axial direction of the pockets and can limit the movement of the rotating body along the axial direction of the pockets; the annular body also has an external oil storage portion for accommodating lubricating oil; the V-shaped limiting portion has an oil passage, and the two ends of the oil passage are respectively provided with a first opening connected to the external oil storage portion and a second opening connected to the pockets, and the radial cross-sectional area of ​​the first opening is larger than the radial cross-sectional area of ​​the second opening;

[0007] The annular body further comprises a buffer portion, which is arranged between two adjacent pockets along the circumference of the annular body, an oil storage cavity is arranged inside the buffer portion, the buffer portion further comprises an oil outlet channel extending radially along the annular body and an oil injection channel extending axially along the annular body, an outer side wall of the buffer portion is provided with an oil outlet hole, and two ends of the oil outlet channel are respectively connected to the oil storage cavity and the oil outlet hole, and an oil injection hole is arranged on the top wall of the buffer portion, and two ends of the oil injection channel are respectively connected to the oil injection hole and the oil storage cavity;

[0008] It also includes a buffer ring, and the inner ring side wall of the annular body is provided with the buffer ring.

[0009] As a preferred embodiment of the present application, the buffer ring is fixedly connected to the annular body; or, the buffer ring and the annular body are arranged separately, the annular body is sleeved on the outside of the buffer ring and the annular body can slide relative to the buffer ring.

[0010] As a preferred embodiment of the present application, along the radial direction of the annular body, the pocket is open on one side close to the outside of the annular body; along the axial direction of the pocket, the V-shaped limiting portion is arranged at one end or both ends of the pocket; a retaining ring is also arranged on the edge of the second opening, and the axial height of the retaining ring is not greater than one third of the diameter of the second opening.

[0011] As a preferred embodiment of the present application, the V-shaped limiting portion includes a first convex strip and a second convex strip; along the plane where the port of the pocket hole is located, the extension directions of the first convex strip and the second convex strip are parallel to the tangent direction of the pocket hole; the extension direction of the first convex strip is parallel or non-parallel to the extension direction of the second convex strip.

[0012] As a preferred embodiment of the present application, along the radial direction of the pocket hole, the shortest distance from the first convex strip and the second convex strip toward the inside of the pocket hole to the center of the pocket hole is less than the radius of the pocket hole; a limited position surface is provided on the first convex strip and the second convex strip toward the inside of the pocket hole, and the plane where the limited position surface is located is tangent to the rotating surface of the rotating body.

[0013] As a preferred embodiment of the present application, the oil storage cavity is spherical, and the diameter of the oil filling channel is not greater than half of the diameter of the oil outlet channel.

[0014] As a preferred embodiment of the present application, an oil storage groove is provided on the inner wall of the pocket hole, the inner wall shape of the oil storage groove is adapted to the shape of the rotating body and there is an oil gap between the inner wall of the oil storage groove and the outer wall of the rotating body; the outer wall of the buffer portion is provided with an oil groove, the oil groove extends along the circumference of the annular body and the two ends of the oil groove are respectively connected with the oil outlet hole and the adjacent pocket hole.

[0015] As a preferred embodiment of the present application, a shock-absorbing pad is provided on the side of the buffer ring facing the annular body, and a wear-resistant reinforcement layer is provided on the side of the buffer ring facing away from the annular body.

[0016] As a preferred embodiment of the present application, the annular body is provided with a plurality of installation grooves around the circumference of the annular body, and the pockets are provided inside the installation grooves; and the extension distance of the V-shaped limiting portion does not exceed the groove depth of the installation grooves.

[0017] As a preferred embodiment of the present application, along the radial direction of the pocket hole, the external oil storage portion is provided between the groove wall of the mounting groove and the pocket hole.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] 1. In the above scheme, the use of a V-shaped limiter can convert the contact mode between the rotating body and the limiter from surface contact to line contact or even point contact compared to the arc-shaped / annular rib structure of the transmission, thereby reducing the contact area, and further reducing the friction loss between the limiter and the rotating body, reducing frictional heat, and reducing lubricating oil consumption. In addition, the structure of the V-shaped limiter is simpler, the processing difficulty is lower, and it is easy to reduce the processing cost.

[0020] 2. In the above scheme, by providing a buffer portion and a buffer layer, it is possible to partially absorb the impact and vibration transmitted to the retaining frame, thereby reducing the irregular movement of the retaining frame during the rotation of the bearing, which is beneficial to ensuring that the rolling path of the rotating body remains stable. By stabilizing the rotating body, the collision impact and vibration generated during the rolling process are reduced, and ultimately the retaining frame and the bearing have the effect of reducing shock and noise.

[0021] 3. In the above scheme, the oil storage cavity is opened inside the buffer part, which can effectively improve the ability of the retaining frame to store lubricating grease. The setting of the oil outlet hole and the oil outlet channel can realize the slow release of lubricating grease, which is beneficial to realize the self-lubrication of the retaining frame and the bearing and improve the lubrication effect; at the same time, under the premise of ensuring the structural strength of the annular body, the oil storage cavity can not only provide oil storage space but also provide energy release space for the buffer part, further improving the energy absorption and shock absorption capacity of the buffer part; at the same time, by arranging an oil groove on the outer wall of the buffer part, it is beneficial for the lubricating grease to smoothly enter the pocket hole and the rotating body, and it can avoid the lubricating grease impacting and squeezing the annular body and the rotating body to cause the retaining frame and / or the rotating body to shift.

[0022] 4. Through the setting of the oil passage, the lubricating oil stored in the external oil storage part is facilitated to directly enter the V-shaped limit part, the pocket and the rotating body, thereby helping to improve the lubrication effect; at the same time, since the lubricating oil can directly enter the rotating matching part between the V-shaped limit part and the rotating body through the oil passage, compared with the traditional full filling of lubricating oil, it can improve the utilization efficiency of the lubricating oil and reduce the waste of lubricating oil; in addition, the radial cross-sectional area of ​​the above-mentioned first opening is larger than the radial cross-sectional area of ​​the second opening. With this setting method, under the premise of not affecting the circulation of the lubricating oil, by reducing the radial cross-sectional area of ​​the second opening, it is conducive to reducing the lubricating oil flowing out from between the V-shaped limit part and the rotating body through the oil passage, further avoiding the loss and waste of lubricating oil.

[0023] 5. In the above scheme, the setting of the mounting groove, the setting of the aforementioned pocket hole being open on one side, and the setting of the oil storage chamber, the oil outlet channel, the oil filling channel and the oil groove are conducive to reducing the material and weight of the retaining frame product, and thus conducive to the overall lightweighting of the bearing. The setting of the mounting groove is also convenient for the setting of the external oil storage part, and is also conducive to the collection of lubricating grease at the rotating fit between the rotating body, the retaining frame and the outer ring of the bearing, thereby improving the lubrication effect and reducing friction heat and friction loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 is a schematic diagram of the structure of a V-type thrust cage in an example;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0027] Figure 3 is a schematic diagram of the cross-sectional structure of a V-type thrust cage in an example;

[0028] Figure 4 for Figure 3 A magnified schematic diagram of part B;

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the buffer portion along the tangent direction of the annular body in an example.

[0030] List of parts and reference numerals:

[0031] 1 annular body, 11 mounting groove, 12 external oil storage portion, 13 buffer portion, 131 oil storage cavity, 132 oil outlet channel, 133 oil injection channel, 134 oil outlet hole, 135 oil injection hole, 136 oil groove, 14 buffer ring;

[0032] 2 pocket holes, 21 retaining rings;

[0033] 31 first convex strip, 32 second convex strip;

[0034] 4 is an oil passage, 41 is a first opening, and 42 is a second opening. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0036] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0037] like Figure 1-Figure 5 As shown, the present application discloses a V-type thrust cage, which includes an annular body 1 and a plurality of pockets 2 arranged on the annular body 1 for mounting a rotating body. Figure 1 and Figure 3 As shown, the axial direction of the pocket hole 2 is the same as the axial direction of the annular body, and the plurality of pocket holes 2 are evenly arranged around the circumference of the annular body; along the radial direction of the annular body, the side of the pocket hole 2 close to the outside of the annular body is open. Figure 2 and Figure 4As shown, the pocket hole 2 in the present application has a V-shaped limiter, through which the axial movement of the rotating body along the pocket hole 2 can be limited to prevent the rotating body from escaping from the pocket hole 2; preferably, the annular body in the present application is also provided with an external oil storage part 12, and the V-shaped limiter is also provided with an oil passage 4, and the first opening 41 and the second opening 42 are provided at both ends of the oil passage 4, and the first opening 41 and the second opening 42 are respectively connected to the external oil storage part 12 and the pocket hole 2, so that the lubricating oil stored in the external oil storage part 12 directly enters the V-shaped limiter, the pocket hole 2 and the rotating body, which is conducive to improving the lubrication effect. At the same time, since the lubricating oil can directly enter the rotating matching part between the V-shaped limiter and the rotating body through the oil passage 4, the utilization efficiency of the lubricating oil can be improved compared with the traditional full filling of the lubricating oil, and the waste of the lubricating oil can be reduced. In addition, the radial cross-sectional area of ​​the first opening 41 is larger than the radial cross-sectional area of ​​the second opening 42. By adopting this arrangement, without affecting the circulation of the lubricating oil, it is beneficial to reduce the lubricating oil flowing out from between the V-shaped limit portion and the rotating body through the oil channel 4 by reducing the radial cross-sectional area of ​​the second opening 42, thereby further avoiding the loss and waste of the lubricating oil.

[0038] In the above scheme, the use of a V-shaped limit part can convert the contact mode between the rotating body and the limit part from surface contact to line contact or even point contact compared to the arc / annular rib and other structures of the transmission, thereby reducing the contact area, and further reducing the friction loss between the limit part and the rotating body, reducing frictional heat, and reducing lubricating oil consumption. In addition, the structure of the V-shaped limit part is simpler and the processing difficulty is lower, which facilitates reducing processing costs.

[0039] Further, refer to Figure 1-Figure 5 As shown, the annular body further includes a buffer portion 13, and the buffer portion 13 is provided between two adjacent pocket holes 2 along the circumference of the annular body, and an oil storage cavity 131 is provided inside the buffer portion 13, and the buffer portion 13 further includes an oil outlet channel 132 extending along the radial direction of the annular body and an oil injection channel 133 extending along the axial direction of the annular body, and an oil outlet hole 134 is provided on the outer wall of the buffer portion 13, and the two ends of the oil outlet channel 132 are respectively connected to the oil storage cavity 131 and the oil outlet hole 134, and the top wall of the buffer portion 13 is provided with an oil injection hole 135, and the two ends of the oil injection channel 133 are respectively connected to the oil injection hole 135 and the oil storage cavity 131. Preferably, the oil storage cavity 131 is spherical. The spherical structure of the oil storage cavity 131 is beneficial to improving space utilization and increasing oil storage capacity. On the other hand, the spherical structure can also obtain higher compressive strength and impact resistance. While increasing the energy absorption and shock absorption capacity of the buffer part 13, it can also avoid the structural strength of the buffer part 13 being too low due to the setting of the cavity, which affects the normal use of the retaining frame and the bearing.

[0040] Continue to refer to Figure 5As shown, in one example, preferably, the diameter of the oil injection channel 133 is not greater than half of the diameter of the oil outlet channel 132. This arrangement is more conducive to the flow of lubricating grease through the oil outlet channel 132, and facilitates the flow of lubricating grease through the oil outlet channel 132 to the rotating body, the pocket 2, and the inner and outer rings of the bearing to participate in lubrication to improve the lubrication effect. At the same time, it is also convenient for the lubricating grease to flow to the adjacent oil outlet hole 134 with the rotation of the rotating body and enter the oil outlet channel 132 and the oil storage chamber 131 for temporary storage and standby use. Since the recycling of lubricating grease is achieved, the consumption of lubricating grease is reduced.

[0041] It should be noted here that the above examples are only some preferred examples of the present application. The specific shape, structure and setting method of the oil storage chamber 131 and the oil filling channel 133 and the oil outlet channel 132 in the present application are not limited to the above examples. It can also adopt other more different settings according to actual needs or processing requirements. The present application does not make any specific limitations on this.

[0042] Further, continue to refer to Figure 2 As shown, the outer wall of the buffer portion 13 is provided with an oil groove 136, which extends along the circumference of the annular body and the two ends of the oil groove 136 are respectively connected to the oil outlet hole 134 and the adjacent pocket hole 2. As a preferred embodiment of the present application, refer to Figure 1-Figure 5 As shown, the V-type thrust retainer in the present application is also provided with a buffer ring 14, which is arranged at the inner ring side wall of the annular body 1, and the two sides of the buffer ring 14 are respectively in contact with the inner ring of the annular body 1, the inner ring of the bearing or the rotating shaft. In one example, the buffer ring 14 is fixedly connected to the annular body. For a retainer made of materials such as polyamide, the buffer ring 14 can be formed integrally with the annular body using the same material. In another example, the buffer ring 14 is separately provided with the annular body, and the annular body is sleeved on the outside of the buffer ring 14. At this time, the buffer ring 14 can be made of a different material from the annular body. Preferably, a buffer pad is provided on the side of the buffer ring 14 facing the annular body, and a wear-resistant reinforcement layer is provided on the side of the buffer ring 14 facing away from the annular body. This arrangement method facilitates the maintenance and replacement of the buffer ring 14, and prolongs the service life of the V-type thrust retainer in the present application. It should be noted here that the above examples are only some preferred examples of the present application. The specific setting method of the buffer ring 14 in the present application is not limited to the above examples. The setting of the buffer ring 14 can also be adaptively adjusted according to actual usage needs, and the present application does not make specific limitations on this.

[0043] In the above scheme, by providing the buffer portion 13 and the buffer ring 14, it is possible to partially absorb the impact and vibration transmitted to the retaining frame, thereby reducing the irregular movement of the retaining frame during the rotation of the bearing, which is beneficial to ensuring that the rolling path of the rotating body remains stable. By stabilizing the rotating body, the collision impact and vibration generated during the rolling process are reduced, and ultimately the retaining frame and the bearing have the effect of reducing shock and noise. In addition, the oil storage chamber 131 is opened inside the buffer portion 13, which can effectively improve the ability of the retaining frame to store lubricating grease. The setting of the oil outlet hole 134 and the oil outlet channel 132 can realize the slow release of lubricating grease, which is beneficial to the self-lubrication of the retaining frame and the bearing and improves the lubrication effect. At the same time, under the premise of ensuring the structural strength of the annular body 1, the oil storage chamber 131 can not only provide oil storage space but also provide energy release space for the buffer portion 13, further improving the energy absorption and shock absorption capacity of the buffer portion 13. At the same time, by setting an oil groove 136 on the outer wall of the buffer portion 13, it is beneficial for the lubricating grease to smoothly enter the pocket 2 and the rotating body, and it can prevent the lubricating grease from impacting and squeezing the annular body 1 and the rotating body to cause the retaining frame and / or the rotating body to shift.

[0044] Further, refer to Figure 2 As shown, a retaining ring 21 is further provided at the edge of the second opening 42, and the axial height of the retaining ring 21 is not greater than one-third of the diameter of the second opening 42. In a preferred example, the axial height of the retaining ring 21 is one-fourth of the diameter of the second opening 42. With this arrangement, the amount of lubricating oil flowing out through the second opening 42 per unit time can be further reduced without affecting the rotation of the rotating body, thereby reducing the amount of lubricating oil lost between the V-shaped limiter and the rotating body, and ensuring the lubrication effect.

[0045] In one example, referring to Figure 2 and Figure 4 As shown, the V-shaped limiting portion includes a first convex strip 31 and a second convex strip 32, and the extension directions of the first convex strip 31 and the second convex strip 32 are parallel to the tangent direction of the pocket hole 2, and the extension direction of the first convex strip 31 is parallel to the extension direction of the second convex strip 32; and along the radial direction of the pocket hole 2, the shortest distance from the side of the first convex strip 31 and the second convex strip 32 facing the inside of the pocket hole 2 to the center of the pocket hole 2 is less than the radius of the pocket hole 2; the first convex strip 31 and the second convex strip 32 are provided with a limiting surface on the side facing the inside of the pocket hole 2, and the plane where the limiting surface is located is tangent to the rotating surface of the rotating body. In the above scheme, the first convex strip 31 and the second convex strip 32 are arranged in parallel, which is more convenient for processing, helps to reduce the processing difficulty and save processing costs. The shortest distance from the side of the first convex strip 31 and the second convex strip 32 facing the inside of the pocket hole 2 to the center of the pocket hole 2 is less than the radius of the pocket hole 2, which ensures that the first convex strip 31 and the second convex strip 32 have sufficient limiting capacity along the axial direction of the pocket hole 2 to limit the axial movement of the rotating body.

[0046] It should be noted that the above examples are only some preferred examples of the present application. In another example, the first convex strip 31 and the second convex strip 32 are arranged in a staggered manner, that is, in a V-shaped arrangement. Compared with the arrangement in parallel, this arrangement ensures the limiting effect and facilitates the installation of the rotating body. Of course, the V-shaped limiting portion can also adopt other different arrangements, and the present application does not make specific limitations on this.

[0047] It should also be noted that the V-shaped limiting portion in the present application can be arranged at one end of the pocket hole 2 along the axial direction of the pocket hole 2, or can be arranged at both ends of the pocket hole 2, and the present application also does not make specific limitations on this.

[0048] As a preferred embodiment of the present application, an oil storage tank is provided on the inner wall of the pocket hole 2, the inner wall shape of the oil storage tank is adapted to the shape of the rotating body and there is an oil gap between the inner wall of the oil storage tank and the outer wall of the rotating body.

[0049] Further, refer to Figure 1 and Figure 2 As shown, the annular body is provided with a plurality of mounting grooves 11 around the circumference of the annular body, and a pocket hole 2 is provided inside the mounting groove 11; the extension distance of the V-shaped limiting portion does not exceed the groove depth of the mounting groove 11; along the radial direction of the pocket hole 2, an external oil storage portion 12 is provided between the groove wall of the mounting groove 11 and the pocket hole 2.

[0050] In the above scheme, the setting of the mounting groove 11 and the setting of the aforementioned pocket 2 being open on one side are conducive to reducing the material and weight of the retaining frame product, and thus conducive to the overall lightweighting of the bearing. This setting method is also convenient for the setting of the external oil storage part 12, and is also conducive to the collection of lubricating grease at the rotating fitting between the rotating body, the retaining frame and the outer ring of the bearing, thereby improving the lubrication effect and reducing frictional heat and friction losses.

[0051] The technical solution protected by the present invention is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any one embodiment with the technical solution of one or more other embodiments is within the protection scope of the present invention. Although the present invention has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A V-type thrust cage, characterized in that: The invention comprises an annular body, wherein the annular body is provided with a plurality of pockets for mounting a rotating body; the pockets are provided with a V-shaped limiting portion, which extends along the axial direction of the pockets and can limit the movement of the rotating body along the axial direction of the pockets; the annular body also has an external oil storage portion for accommodating lubricating oil; the V-shaped limiting portion has an oil passage, and the two ends of the oil passage are respectively provided with a first opening communicating with the external oil storage portion and a second opening communicating with the pockets, and the radial cross-sectional area of ​​the first opening is larger than the radial cross-sectional area of ​​the second opening; The annular body further comprises a buffer portion, which is arranged between two adjacent pockets along the circumference of the annular body, an oil storage cavity is arranged inside the buffer portion, the buffer portion further comprises an oil outlet channel extending radially along the annular body and an oil injection channel extending axially along the annular body, an outer side wall of the buffer portion is provided with an oil outlet hole, and two ends of the oil outlet channel are respectively connected to the oil storage cavity and the oil outlet hole, and an oil injection hole is arranged on the top wall of the buffer portion, and two ends of the oil injection channel are respectively connected to the oil injection hole and the oil storage cavity; It also includes a buffer ring, and the inner ring side wall of the annular body is provided with the buffer ring.

2. The V-type thrust cage according to claim 1, characterized in that: The buffer ring is fixedly connected to the annular body; or, the buffer ring and the annular body are arranged separately, the annular body is sleeved on the outside of the buffer ring and the annular body can slide relative to the buffer ring.

3. The V-type thrust cage according to claim 1, characterized in that: Along the radial direction of the annular body, the pocket hole is open on one side close to the outside of the annular body; along the axial direction of the pocket hole, the V-shaped limiting portion is arranged at one end or both ends of the pocket hole; a retaining ring is also arranged on the edge of the second opening, and the axial height of the retaining ring is not greater than one third of the diameter of the second opening.

4. The V-type thrust cage according to claim 1, characterized in that: The V-shaped limiting portion includes a first convex strip and a second convex strip; along the plane where the port of the pocket hole is located, the extension directions of the first convex strip and the second convex strip are parallel to the tangent direction of the pocket hole; the extension direction of the first convex strip is parallel or non-parallel to the extension direction of the second convex strip.

5. The V-type thrust cage according to claim 4, characterized in that: Along the radial direction of the pocket hole, the shortest distance from the first convex strip and the second convex strip toward the inside of the pocket hole to the center of the pocket hole is less than the radius of the pocket hole; a limited position surface is provided on the first convex strip and the second convex strip toward the inside of the pocket hole, and the plane where the limited position surface is located is tangent to the rotating surface of the rotating body.

6. The V-type thrust cage according to claim 1, characterized in that: The oil storage cavity is spherical, and the diameter of the oil injection channel is not greater than half of the diameter of the oil outlet channel.

7. The V-type thrust cage according to claim 1, characterized in that: An oil storage groove is provided on the inner wall of the pocket hole, the inner wall shape of the oil storage groove is adapted to the shape of the rotating body and there is an oil flow gap between the inner wall of the oil storage groove and the outer wall of the rotating body; an outer wall of the buffer portion is provided with an oil flow groove, the oil flow groove extends along the circumference of the annular body and the two ends of the oil flow groove are respectively connected with the oil outlet hole and the adjacent pocket hole.

8. The V-type thrust cage according to claim 1, characterized in that: A shock-absorbing pad is arranged on a side of the buffer ring facing the annular body, and a wear-resistant reinforcement layer is arranged on a side of the buffer ring facing away from the annular body.

9. The V-type thrust cage according to claim 1, characterized in that: A plurality of mounting grooves are provided on the annular body around the circumference of the annular body, and the pockets are provided inside the mounting grooves; and the extension distance of the V-shaped limiting portion does not exceed the groove depth of the mounting grooves.

10. The V-type thrust cage according to claim 9, characterized in that: Along the radial direction of the pocket hole, the outer oil storage portion is arranged between the groove wall of the mounting groove and the pocket hole.

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