Plane thrust roller pin retainer assembly

Abstract

The utility model discloses a plane thrust needle roller retainer assembly, which relates to the technical field of bearings, and comprises a lower retainer and an upper retainer, the surface of the lower retainer is provided with lower ball pockets, a flow channel is arranged between two adjacent lower ball pockets, the front end and the rear end of the lower retainer are both provided with supplement ports, and the supplement ports are communicated with the flow channel. A first nut is arranged on the edge of the surface of the lower retainer in a penetrating mode, a retainer plate is arranged at the top of the lower retainer, through grooves are formed in the surface of the retainer plate, a heat dissipation channel is formed between every two adjacent through grooves, and heat dissipation openings are formed in the front end and the rear end of the retainer plate. And a nut II penetrates through the edge of the surface of the retainer plate. According to the plane thrust roller pin retainer assembly, the sections of the upper ball pockets, the through grooves and the lower ball pockets are of the octagonal structure, the contact area between the ball pockets and roller pins can be reduced, heat generated by friction between the roller pins and the ball pockets during rolling is weakened, and the heat productivity is reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and particularly relates to a thrust needle cage assembly for a flat surface. Background Art

[0002] A thrust bearing for a flat surface (flat bearing) can obtain a high axial load and high stiffness in a very small space, and is composed of a flat cage assembly with needle rollers or cylindrical rollers or steel balls and a flat washer. For the cage structure among them, its function is: the cage separates the rolling elements at equal intervals and guides and drives the rolling elements on the correct raceway.

[0003] For example, the utility model with the application number CN202323460015.X discloses a cage for a flat roller injection bearing. This utility model sets a lower rib, and the roller body can be directly placed into the lower pocket hole, so that the roller body cannot fall off from the lower pocket hole. The upper cage is placed on the lower cage, and the upper rib fits on the upper side of the outer wall of the roller body. Through the upper rib and the lower rib, while ensuring that the roller body can roll, its upper and lower limits are restricted. The insertion ring is inserted into the connecting ring, and the bolt is screwed into the threaded hole to fixedly connect the insertion ring and the connecting ring, so that the upper cage and the lower cage become an integral body, which is convenient for installation and not easy to damage the cage, so that the roller body is not easy to fall off. However, the setting of the upper rib and the lower rib increases the contact area between the roller body and the cage, resulting in easy friction between the roller body and the cage during rolling, generating a large amount of heat in the cage and causing damage to the roller body.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a thrust needle cage assembly for a flat surface is proposed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a thrust needle cage assembly for a flat surface to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A thrust needle cage assembly for a flat surface includes a lower cage and an upper cage. The surface of the lower cage is provided with lower ball pockets. A flow channel is arranged between two adjacent lower ball pockets. Supplementary ports are opened at the front and rear ends of the lower cage, and a nut one is penetrated through the edge of the surface of the lower cage. A cage plate is arranged on the top of the lower cage, and through slots are opened on the surface of the cage plate. A heat dissipation channel is arranged between two adjacent through slots. Heat dissipation ports are opened at the front and rear ends of the cage plate, and a nut two is penetrated through the edge of the surface of the cage plate. The upper cage is arranged on the top of the cage plate, and upper ball pockets are opened on the surface of the upper cage. Needle rollers are arranged in the upper ball pockets, through slots and lower ball pockets.

[0007] Further, the upper ball pocket and the lower ball pocket are symmetrically distributed with respect to the lateral central axis of the cage plate, and the upper ball pocket has an isosceles trapezoid structure.

[0008] Further, the lower ball pocket, the through groove and the upper ball pocket are provided in the same number, and the through grooves are annularly and equidistantly distributed on the surface of the cage plate.

[0009] Further, eight needle rollers are provided, and the outer diameter of the needle roller is smaller than the width of the through groove.

[0010] Further, a locking component is installed on the outer side of the upper cage, and two locking components are provided.

[0011] Further, the locking component includes a side plate and a rotating shaft, and the rotating shaft is rotatably provided on the side plate.

[0012] Further, the locking component further includes a pawl and a hook spring. The outer part of the rotating shaft is connected with the pawl. The pin shaft on the surface of the pawl is connected with the hook spring, and the other end of the hook spring is fixedly connected with the pin shaft on the side plate.

[0013] Further, the locking component further includes a ratchet wheel and an inner hexagon bolt. The inner hexagon bolt is screwed into the first nut and the second nut, and the ratchet wheel is sleeved on the outer part of the inner hexagon bolt.

[0014] The utility model provides a planar thrust needle roller cage assembly, which has the following beneficial effects:

[0015] 1. The cross-sections of the upper ball pocket, the through groove and the lower ball pocket of the utility model are in an octagonal structure. The ball pocket with this structure can reduce the contact area with the needle roller, weaken the heat generated by the friction between the needle roller and the ball pocket during rolling, reduce the calorific value to a certain extent, and at the same time, the generated heat can be transferred to the adjacent through grooves through the heat dissipation channels and finally discharged from the heat dissipation ports, further reducing the heat.

[0016] 2. After the lower cage, the cage plate and the upper cage of the utility model are aligned, the inner hexagon bolt is sequentially screwed into the nut on the surface of the upper cage, the second nut on the surface of the cage plate, and the first nut on the surface of the lower cage. During this period, relying on the elastic support of the hook spring, the pawl and the ratchet wheel are engaged with each other, thereby preventing the ratchet wheel and the inner hexagon bolt from rotating counterclockwise, forming a locked state, avoiding the inner hexagon bolt from unscrewing and causing the separation of the lower cage, the cage plate and the upper cage, and ensuring the stability and integrity of the cage structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall top view structure schematic diagram of a planar thrust needle roller cage assembly of the utility model;

[0018] Figure 2Schematic diagram of the front view cross-section of the upper cage, cage plate and lower cage of a planar thrust needle cage assembly of the present utility model;

[0019] Figure 3 Schematic diagram of the top view cross-section of the cage plate of a planar thrust needle cage assembly of the present utility model;

[0020] Figure 4 Schematic diagram of the top view of the lower cage of a planar thrust needle cage assembly of the present utility model;

[0021] Figure 5 Of a planar thrust needle cage assembly of the present utility model Figure 1 Enlarged structure diagram at position A;

[0022] Figure 6 Schematic diagram of the three-dimensional structure of the cage plate of a planar thrust needle cage assembly of the present utility model.

[0023] In the figure: 1. Lower cage; 2. Lower ball pocket; 3. Flow channel; 4. Supplementary port; 5. Nut one; 6. Cage plate; 7. Through groove; 8. Heat dissipation channel; 9. Heat dissipation port; 10. Nut two; 11. Upper cage; 12. Upper ball pocket; 13. Needle roller; 14. Locking assembly; 1401. Side plate; 1402. Rotating shaft; 1403. Pawl; 1404. Hook spring; 1405. Ratchet; 1406. Hexagon socket head bolt. Detailed implementation manners

[0024] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 6As shown in the figure, a flat thrust needle cage assembly includes a lower cage 1 and an upper cage 11. The surface of the lower cage 1 is provided with lower ball pockets 2. A flow channel 3 is arranged between two adjacent lower ball pockets 2. Supplementary ports 4 are opened at both the front and rear ends of the lower cage 1. A nut 5 is penetrated through the edge of the surface of the lower cage 1. A cage plate 6 is arranged on the top of the lower cage 1. A through groove 7 is opened on the surface of the cage plate 6. A heat dissipation channel 8 is arranged between two adjacent through grooves 7. Heat dissipation ports 9 are opened at both the front and rear ends of the cage plate 6. A nut 10 is penetrated through the edge of the surface of the cage plate 6. The upper cage 11 is arranged on the top of the cage plate 6. An upper ball pocket 12 is opened on the surface of the upper cage 11. Needle rollers 13 are arranged in the upper ball pocket 12, the through groove 7 and the lower ball pocket 2. The upper ball pocket 12 and the lower ball pocket 2 are symmetrically distributed about the transverse central axis of the cage plate 6. The upper ball pocket 12 is in an isosceles trapezoid structure. The number of the lower ball pockets 2, the through grooves 7 and the upper ball pockets 12 is the same. The through grooves 7 are annularly and equidistantly distributed on the surface of the cage plate 6. Eight needle rollers 13 are arranged. The outer diameter of the needle roller 13 is smaller than the width of the through groove 7.

[0026] The specific operation is as follows. The cross-sections of the upper ball pocket 12, the through groove 7 and the lower ball pocket 2 are in an octagonal structure. The ball pockets of this structure can reduce the contact area with the needle roller 13, weaken the heat generated by the friction between the needle roller 13 and the ball pocket during rolling, reduce the calorific value to a certain extent. At the same time, the generated heat can be transferred to the adjacent through groove 7 through the heat dissipation channel 8 and finally discharged from the heat dissipation port 9 to further reduce the heat.

[0027] As Figure 1 and Figure 5 As shown in the figure, locking components 14 are installed on the outside of the upper cage 11. There are two locking components 14. The locking component 14 includes a side plate 1401 and a rotating shaft 1402. The rotating shaft 1402 is rotatably arranged on the side plate 1401. The locking component 14 further includes a pawl 1403 and a hook spring 1404. The pawl 1403 is connected to the outside of the rotating shaft 1402. A hook spring 1404 is connected to the pin shaft on the surface of the pawl 1403. The other end of the hook spring 1404 is fixedly connected to the pin shaft on the side plate 1401. The locking component 14 further includes a ratchet 1405 and an internal hexagon bolt 1406. The internal hexagon bolt 1406 is screwed into the nut 5 and the nut 10. A ratchet 1405 is sleeved on the outside of the internal hexagon bolt 1406.

[0028] The specific operation is as follows. After aligning the lower cage 1, the cage plate 6, and the upper cage 11, the hexagon socket head cap screws 1406 are sequentially screwed into the nuts on the surface of the upper cage 11, the second nut 10 on the surface of the cage plate 6, and the first nut 5 on the surface of the lower cage 1. During this process, relying on the elastic support of the hook spring 1404, the pawl 1403 and the ratchet 1405 are engaged with each other, thereby preventing the ratchet 1405 and the hexagon socket head cap screws 1406 from rotating counterclockwise, forming a locked state, avoiding the hexagon socket head cap screws 1406 from unscrewing and causing the separation of the lower cage 1, the cage plate 6, and the upper cage 11, and ensuring the stability and integrity of the cage structure.

[0029] In summary, for this flat thrust needle cage assembly, during use, first, after stacking the lower cage 1 and the cage plate 6, the needle rollers 13 are placed into the through slots 7, and then the upper cage 11 is placed on top of the cage plate 6, so that the needle rollers 13 are restricted in the ball pockets formed by the upper ball pocket 12, the through slots 7, and the lower ball pocket 2. Since the cross-sections of the upper ball pocket 12, the through slots 7, and the lower ball pocket 2 are octagonal structures, the needle rollers 13 only keep in contact with the upper ball pocket 12 and the lower ball pocket 2, thereby reducing the heat generated by the friction between the needle rollers 13 and the ball pockets during rolling, reducing the heat generation to a certain extent, and avoiding the frictional damage between the needle rollers 13 and the ball pockets, which affects the service life of the cage.

[0030] At the same time, adjacent through slots 7 are connected through the heat dissipation channels 8, so that the generated heat can be transferred to the adjacent through slots 7 through the heat dissipation channels 8 and finally discharged from the heat dissipation openings 9, further reducing the heat. And adjacent lower ball pockets 2 are connected through the flow channels 3, and lubricating oil is added to the replenishing port 4, so that the lubricating oil can be recycled.

[0031] After adjusting the lower cage 1, the cage plate 6, and the upper cage 11 to be aligned, the hexagon socket head cap screws 1406 are sequentially screwed into the nuts on the surface of the upper cage 11, the second nut 10 on the surface of the cage plate 6, and the first nut 5 on the surface of the lower cage 1. During this process, relying on the elastic support of the hook spring 1404, the pawl 1403 and the ratchet 1405 keep engaged, thereby preventing the ratchet 1405 and the hexagon socket head cap screws 1406 from rotating counterclockwise, avoiding the hexagon socket head cap screws 1406 from unscrewing from the second nut 10 and the first nut 5 after a period of time and causing the separation of the lower cage 1, the cage plate 6, and the upper cage 11, and making the lower cage 1, the cage plate 6, and the upper cage 11 become an integral whole.

[0032] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present utility model and its practical applications, and to enable those of ordinary skill in the art to understand the present utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A planar thrust needle roller cage assembly, comprising a lower cage (1) and an upper cage (11), characterized in that: The surface of the lower retaining frame (1) is provided with a lower ball pocket (2), and a flow channel (3) is provided between two adjacent lower ball pockets (2). The front and rear ends of the lower retaining frame (1) are provided with a supplementary port (4), and a nut (5) is provided through the edge of the surface of the lower retaining frame (1). The top of the lower retaining frame (1) is provided with a retaining frame plate (6), and a through groove (7) is provided on the surface of the retaining frame plate (6), and a heat dissipation channel (8) is provided between two adjacent through grooves (7). The front and rear ends of the retaining frame plate (6) are provided with a heat dissipation port (9), and a nut (10) is provided through the edge of the surface of the retaining frame plate (6). The upper retaining frame (11) is provided at the top of the retaining frame plate (6), and the surface of the upper retaining frame (11) is provided with an upper ball pocket (12), and roller needles (13) are provided in the upper ball pocket (12), the through groove (7) and the lower ball pocket (2).

2. The planar thrust needle roller cage assembly according to claim 1, characterized in that: The upper ball pocket (12) and the lower ball pocket (2) are symmetrically distributed about the transverse center axis of the retaining frame plate (6), and the upper ball pocket (12) is an isosceles trapezoidal structure.

3. The planar thrust needle roller cage assembly according to claim 1, characterized in that: The lower ball pocket (2), the through slot (7) and the upper ball pocket (12) are arranged in the same number, and the through slots (7) are distributed in an annular manner with equal distances with respect to the surface of the retaining frame plate (6).

4. The planar thrust needle roller cage assembly according to claim 1, characterized in that: Eight rolling needles (13) are provided, and the outer diameter of the rolling needles (13) is smaller than the width of the through groove (7).

5. The planar thrust needle roller cage assembly according to claim 1, characterized in that: A locking assembly (14) is installed on the outer side of the upper retaining frame (11), and two locking assemblies (14) are provided.

6. The planar thrust needle roller cage assembly according to claim 5, characterized in that: The locking assembly (14) comprises a side plate (1401) and a rotation shaft (1402), and the rotation shaft (1402) is rotatably arranged on the side plate (1401).

7. The planar thrust needle roller cage assembly according to claim 6, characterized in that: The locking assembly (14) further comprises a pawl (1403) and a hook spring (1404), and the outside of the rotating shaft (1402) is connected with the pawl (1403), the pin on the surface of the pawl (1403) is connected with the hook spring (1404), and the other end of the hook spring (1404) is fixedly connected to the pin on the side plate (1401).

8. The planar thrust needle roller cage assembly according to claim 7, characterized in that: The locking assembly (14) further comprises a ratchet (1405) and a hexagon socket bolt (1406), and the hexagon socket bolt (1406) is screwed into the nut 1 (5) and the nut 2 (10), and the ratchet (1405) is sleeved on the outside of the hexagon socket bolt (1406).

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