High-strength inner star wheel

Abstract

The utility model relates to the technical field of inner star wheels, in particular to a high-strength inner star wheel which comprises a wheel body and a ball cage mounted on the wheel body, a wear-resisting assembly used for reducing friction between the wheel body and the ball cage is arranged on the wheel body, and the wear-resisting assembly comprises a plurality of supporting columns slidably arranged on the outer side of the wheel body through sliding assemblies. Through cooperative arrangement of the supporting columns, the arc-shaped grooves, the balls and other structures, during use, the supporting columns are moved towards the interior of the wheel body through the sliding assemblies, the wheel body is conveniently installed in a ball cage, then the balls are placed in the arc-shaped grooves, and therefore the ball cage can be conveniently installed in the ball cage; the supporting column moves towards the outside of the wheel body through the sliding assembly, so that the balls abut against the ball cage, when the wheel body rotates, the balls and the ball cage rotate, friction between the wheel body and the ball cage is reduced, and the problem that the ball cage is prone to being abraded due to the fact that the contact area between the abrasion-resistant pad and the ball cage is large and generated friction is large is solved as much as possible.

Description

Technical Field

[0001] The present application relates to the technical field of inner star wheels, and in particular to a high-strength inner star wheel. Background Art

[0002] In more and more mechanical equipment, mechanical parts that can rotate flexibly are often needed. A common mechanical part is a ball cage universal joint. A common ball cage universal joint includes an inner star wheel and a ball.

[0003] The utility model patent with announcement number CN214945865U proposes a durable inner star wheel, including a wheel body with a sliding cavity, a ball cage installed on the wheel body, a sliding column slidably installed on the sliding cavity, a locking component arranged on the wheel body, a connecting component arranged on the sliding column, and an elastic component arranged on the sliding column.

[0004] The durable inner star wheel mentioned above supports the wheel body by using wear-resistant pads to enhance the stability of the wheel body and the ball cage. However, during the rotation of the inner star wheel, the contact area between the wear-resistant pad and the ball cage is large, resulting in greater friction, which makes the ball cage prone to wear. Utility Model Content

[0005] The purpose of the utility model is to solve or at least alleviate the problem of an existing durable inner star wheel by supporting the wheel body with a wear-resistant pad, thereby enhancing the stability of the wheel body and the ball cage. However, during the rotation of the inner star wheel, the contact area between the wear-resistant pad and the ball cage is large, and the friction generated is large, which makes the ball cage easy to wear.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-strength inner star wheel comprises a wheel body and a ball cage mounted on the wheel body, the wheel body is provided with a wear-resistant component for reducing friction between the wheel body and the ball cage, the wear-resistant component comprises a plurality of support columns slidably arranged on the outside of the wheel body through a sliding component, an arc groove is formed at one end of the support column away from the wheel body, a ball is rolled in the arc groove, and the end of the ball away from the support column abuts against the ball cage.

[0008] By adopting the above technical solution, when in use, the support column is moved toward the inside of the wheel body through the sliding assembly, which facilitates the installation of the wheel body into the inside of the ball cage, and then the ball is placed in the arc groove, and the support column is moved toward the outside of the wheel body through the sliding assembly, so that the ball and the ball cage are in contact, so that when the wheel body rotates, the ball and the ball cage rotate, reducing the friction between the wheel body and the ball cage, and avoiding as much as possible the large contact area between the wear-resistant pad and the ball cage, resulting in large friction, which causes the ball cage to be easily worn.

[0009] Optionally, the sliding assembly includes a threaded rod fixedly connected to one end of the support column away from the arc groove, the threaded rod is located inside the wheel body and forms a threaded connection, and one end of the threaded rod close to the support column is fixedly connected to a rotating disk.

[0010] By adopting the above technical solution, the threaded rod can be rotated by rotating the rotating disk, and the threaded rod can be moved to the outside of the wheel body or to the inside of the wheel body, so that the support column can be moved.

[0011] Optionally, an anti-drop cover is provided at one end of the support column located at the arc-shaped groove, the anti-drop cover is threadedly connected to the support column, a through hole is opened on the anti-drop cover, and the diameter of the through hole is smaller than the diameter of the ball.

[0012] By adopting the above technical solution, after the ball is placed in the arc groove, the anti-drop cover is connected to the support column to prevent the ball from falling. At the same time, the through hole can make the ball part extend out of the anti-drop cover to prevent the anti-drop cover from contacting the ball cage.

[0013] Optionally, a limiting plate is sleeved on the threaded rod, and the limiting plate is threadedly connected to the threaded rod.

[0014] By adopting the above technical solution, when the threaded rod extends partly outside the wheel body and the ball is abutted against the inner wall of the ball cage, the limit plate is rotated to abut against the wheel body, which can improve the stability of the threaded rod and prevent the threaded rod from being squeezed and moving inward, causing wear of the threaded rod.

[0015] Optionally, a tooth groove is provided at a concentric portion of the wheel body.

[0016] By adopting the above technical solution, the wheel body can be easily connected to the external transmission shaft through the tooth groove, so that the external transmission shaft drives the wheel body to rotate through the tooth groove.

[0017] Optionally, the wheel body is located on both sides of the support column and is fixedly connected to fixing columns via connecting pieces, one end of the fixing column away from the wheel body is fixedly connected to the same ring, and the support column is slidably disposed in the ring.

[0018] By adopting the above technical solution, the support column can be restricted from translation by fixing the column and the ring, preventing the support column from shaking when the ball rotates, causing the threaded rod to shake and generate friction with the wheel body, thereby wearing the threaded rod.

[0019] Optionally, the connecting member includes a fixing bolt, and the fixing bolt passes through the fixing column and is threadedly connected to the wheel body.

[0020] By adopting the above technical solution, the collar can be taken out from the support column by removing the fixing bolt, and the threaded rod can be rotated to remove the threaded rod from the wheel body, so that disassembly and replacement are convenient.

[0021] In summary, the beneficial effects of this application are as follows:

[0022] 1. The present application adopts the coordination arrangement between the supporting column, the arc groove and the ball bearing structures. When in use, the supporting column is moved into the wheel body through the sliding assembly, so that the wheel body can be installed inside the ball cage conveniently. Then the ball bearing is placed in the arc groove, and the supporting column is moved outward from the wheel body through the sliding assembly, so that the ball bearing and the ball cage are in contact. When the wheel body rotates, the ball bearing and the ball cage rotate, thereby reducing the friction between the wheel body and the ball cage, and avoiding as much as possible the problem that the ball cage is easily worn due to the large contact area between the wear-resistant pad and the ball cage, resulting in large friction;

[0023] 2. The support column can be restricted from translation by fixing the column and the collar to prevent the support column from shaking when the ball rotates, causing the threaded rod to shake and generate friction with the wheel body, thereby wearing the threaded rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is an exploded schematic diagram of the connection structure between the support column and the anti-drop cover of the utility model;

[0026] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure of area A in the middle.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. wheel body; 2. ball cage; 3. support column; 4. arc groove; 5. ball bearing; 6. threaded rod; 7. rotating disk; 8. anti-drop cover; 9. through hole; 10. limit plate; 11. tooth groove; 12. fixing column; 13. collar; 14. fixing bolt. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] See also Figure 1-3 A high-strength inner star wheel comprises a wheel body 1 and a ball cage 2 mounted on the wheel body 1. The wheel body 1 is provided with a wear-resistant component for reducing friction between the wheel body 1 and the ball cage 2. The wear-resistant component comprises a plurality of support columns 3 slidably arranged on the outside of the wheel body 1 through a sliding component for supporting the wheel body 1 in the ball cage 2. An arc groove 4 is provided at one end of the support column 3 away from the wheel body 1. A ball 5 for reducing friction is rolled in the arc groove 4. Half of the ball 5 is located outside the arc groove 4, and one end of the ball 5 away from the support column 3 abuts against the ball cage 2.

[0030] When in use, the support column 3 is moved toward the wheel body 1 through the sliding assembly, which facilitates the installation of the wheel body 1 into the interior of the ball cage 2, and then the ball 5 is placed in the arc groove 4, and the support column 3 is moved toward the outside of the wheel body 1 through the sliding assembly, so that the ball 5 abuts against the ball cage 2, so that when the wheel body 1 rotates, the ball 5 and the ball cage 2 rotate, reducing the friction between the wheel body 1 and the ball cage 2, and avoiding as much as possible the large contact area between the wear-resistant pad and the ball cage 2, resulting in large friction, which makes the ball cage 2 easy to wear.

[0031] Reference Figure 3 The sliding assembly includes a threaded rod 6 fixedly connected to the end of the support column 3 away from the arc groove 4. The threaded rod 6 is located inside the wheel body 1 and forms a threaded connection. The end of the threaded rod 6 close to the support column 3 is fixedly connected to a rotating disk 7. By rotating the rotating disk 7, the threaded rod 6 is rotated, and the threaded rod 6 can be moved to the outside of the wheel body 1 or to the inside of the wheel body 1, so that the support column 3 moves.

[0032] Reference Figure 2 An anti-drop cover 8 is provided at one end of the support column 3 located in the arc groove 4. The anti-drop cover 8 is threadedly connected to the support column 3. A through hole 9 is opened on the anti-drop cover 8. The diameter of the through hole 9 is smaller than the diameter of the ball 5. After the ball 5 is placed in the arc groove 4, the anti-drop cover 8 is connected to the support column 3 to prevent the ball 5 from falling. At the same time, the through hole 9 can make part of the ball 5 extend out of the outside of the anti-drop cover 8 to prevent the anti-drop cover 8 from contacting the ball cage 2.

[0033] Reference Figure 3 A limit plate 10 is sleeved on the threaded rod 6, and the limit plate 10 is threadedly connected to the threaded rod 6. When the threaded rod 6 extends partly outside the wheel body 1 and abuts the ball 5 against the inner wall of the ball cage 2, the limit plate 10 is rotated to abut against the wheel body 1, which can improve the stability of the threaded rod 6 and prevent the threaded rod 6 from being squeezed and moving inward, causing wear of the threaded rod 6.

[0034] Reference Figure 1 A tooth groove 11 is provided at the concentric part of the wheel body 1, and the tooth groove 11 is conveniently connected to an external transmission shaft, so that the external transmission shaft drives the wheel body 1 to rotate through the tooth groove 11.

[0035] Reference Figure 3 The wheel body 1 is located on both sides of the support column 3 and is fixedly connected with a fixing column 12 through a connecting piece. The end of the fixing column 12 away from the wheel body 1 is fixedly connected with the same ring 13. The support column 3 is slidably set in the ring 13. The fixing column 12 and the ring 13 can limit the translation of the support column 3 to prevent the support column 3 from shaking when the ball 5 rotates, causing the threaded rod 6 to shake and rub against the wheel body 1, thereby wearing the threaded rod 6.

[0036] Reference Figure 3 The connecting piece includes a fixing bolt 14, which passes through the fixing column 12 and is fixedly connected to the wheel body 1. By removing the fixing bolt 14, the ring 13 can be taken out from the support column 3, and the threaded rod 6 can be rotated to remove the threaded rod 6 from the wheel body 1, which is convenient for disassembly and replacement.

[0037] The implementation principle of the present application is as follows: when in use, the support column 3 is moved toward the inside of the wheel body 1 through the sliding assembly, so that the wheel body 1 can be installed inside the ball cage 2 conveniently, and then the ball 5 is placed in the arc groove 4, and the support column 3 is moved toward the outside of the wheel body 1 through the sliding assembly, so that the ball 5 abuts against the ball cage 2, so that when the wheel body 1 rotates, the ball 5 and the ball cage 2 rotate, reducing the friction between the wheel body 1 and the ball cage 2, and avoiding as much as possible the large contact area between the wear-resistant pad and the ball cage 2, resulting in large friction, which causes the ball cage 2 to be easily worn.

[0038] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-strength inner star wheel, comprising a wheel body (1), a ball cage (2) mounted on the wheel body (1), wherein the wheel body (1) is provided with a wear-resistant component for reducing friction between the wheel body (1) and the ball cage (2), characterized in that: The wear-resistant component comprises a plurality of support columns (3) slidably arranged on the outside of the wheel body (1) via a sliding component, an arcuate groove (4) is formed at one end of the support column (3) away from the wheel body (1), a ball (5) is rolled in the arcuate groove (4), and an end of the ball (5) away from the support column (3) abuts against the ball cage (2).

2. The high-strength inner star wheel according to claim 1, characterized in that: The sliding assembly comprises a threaded rod (6) fixedly connected to an end of the support column (3) away from the arc-shaped groove (4); the threaded rod (6) is located inside the wheel body (1) and forms a threaded connection; and an end of the threaded rod (6) close to the support column (3) is fixedly connected to a rotating disk (7).

3. The high-strength inner star wheel according to claim 1, characterized in that: An anti-drop cover (8) is provided at one end of the support column (3) located at the arc-shaped groove (4), the anti-drop cover (8) is threadedly connected to the support column (3), a through hole (9) is provided on the anti-drop cover (8), and the diameter of the through hole (9) is smaller than the diameter of the ball (5).

4. The high-strength inner star wheel according to claim 2, characterized in that: A limiting plate (10) is sleeved on the threaded rod (6), and the limiting plate (10) is threadedly connected to the threaded rod (6).

5. The high-strength inner star wheel according to claim 1, characterized in that: A tooth groove (11) is provided at a concentric position of the wheel body (1).

6. The high-strength inner star wheel according to claim 1, characterized in that: The wheel body (1) is located on both sides of the support column (3) and is fixedly connected to a fixing column (12) via a connecting piece; one end of the fixing column (12) away from the wheel body (1) is fixedly connected to the same sleeve (13); and the support column (3) is slidably disposed in the sleeve (13).

7. The high-strength inner star wheel according to claim 6, characterized in that: The connecting member comprises a fixing bolt (14), wherein the fixing bolt (14) passes through the fixing column (12) and is threadedly connected to the wheel body (1).

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