High-rotating-speed deep groove ball bearing retainer

Abstract

The utility model provides a high-rotating-speed deep groove ball bearing retainer, and belongs to the field of bearings. The problem that an existing bearing retainer is prone to damage is solved. The high-rotating-speed deep groove ball bearing retainer comprises a retainer body arranged in a split type splicing structure, the retainer body is formed by splicing a left frame body and a right frame body, a plurality of splicing structures are arranged between the left frame body and the right frame body, and the left frame body and the right frame body are arranged in an opposite structure. A plurality of semicircular grooves are formed in the left frame body and the right frame body, two opposite semicircular grooves are matched to form an annular cavity, wear-resisting blocks are arranged in the semicircular grooves, the cross section of each wear-resisting block is of a semicircular structure, a plurality of through holes are formed in each wear-resisting block, and the splicing structure comprises a splicing hole, an extending part and a mortise and tenon pin. The splicing structure is located between the two annular cavities, and the splicing hole and the extending part are located on the right frame body and the left frame body respectively and are locked and limited in the radial direction through the mortise and tenon pin. The utility model has the advantage of being convenient for later maintenance.

Description

Technical Field

[0001] The utility model belongs to the field of bearings and relates to a retaining frame, in particular to a high-speed deep groove ball bearing retaining frame. Background Art

[0002] Large and extra-large deep groove ball bearings are widely used in various large-scale mechanical equipment. The cages of large and extra-large deep groove ball bearings are usually brass solid cages with heavy weight. The weight of the cage accounts for about 18% to 22% of the total weight of the bearing.

[0003] When the bearing is working, especially when the load is complex and the bearing rotates at high speed, the cage has to withstand great centrifugal force, impact and vibration. There is a large sliding friction between the cage and the rolling element, and a large amount of heat is generated. At present, in the process of the cage being subjected to large centrifugal force, impact and vibration for a long time, a large friction will be generated between the cage and the ball, affecting the stability of the cage. With high-speed operation, the friction heat accumulates and causes the cage to be damaged, which greatly affects the performance of the bearing. The traditional cage is an integrated structure, which is not easy to disassemble and maintain, and seriously affects the service life. Summary of the invention

[0004] The utility model aims to solve the above problems in the prior art by providing a high-speed deep groove ball bearing retainer.

[0005] The purpose of the utility model can be achieved through the following technical solutions: A high-speed deep groove ball bearing cage, characterized in that it includes a cage body arranged in a split splicing structure, the cage body is composed of a left frame body and a right frame body, and a plurality of splicing structures for splicing and improving the connection stability are arranged between the left frame body and the right frame body;

[0006] The left frame and the right frame are arranged in a relative structure;

[0007] The left frame and the right frame are both provided with a plurality of semicircular grooves, two opposite semicircular grooves cooperate to form an annular cavity, and wear-resistant blocks for improving wear resistance are arranged in the semicircular grooves;

[0008] The ring cavity has a rolling body;

[0009] The cross section of the wear-resistant block is arranged in a semicircular structure;

[0010] The wear-resistant block is provided with a plurality of through holes for rapid volatilization and heat dissipation;

[0011] The splicing structure includes a splicing hole opened on the opposite side wall of the right frame, an extension portion arranged on the left frame and matched with the splicing hole, and a mortise and tenon pin for radial locking and limiting;

[0012] The splicing structure is located between the two annular cavities, and the splicing hole and the extension part are respectively located on the right frame body and the left frame body, and radial locking and limiting are performed by mortise and tenon pins.

[0013] In the above-mentioned high-speed deep groove ball bearing retainer, the extension part and the splicing hole are both arranged in a stepped structure, and a through hole for the mortise and tenon pin to penetrate and connect with the splicing hole is opened at a corresponding position on the right frame body, and the extension part has a mortise hole that cooperates with the mortise and tenon pin.

[0014] In the above-mentioned high-speed deep groove ball bearing retainer, the left frame body is inserted into the corresponding splicing hole on the right frame body through a plurality of extension parts, so that the mortise holes on the extension parts are aligned with the corresponding through holes, and the mortise and tenon pins are inserted into the through holes and into the corresponding mortise holes for radial locking and limiting.

[0015] In the above-mentioned high-speed deep groove ball bearing retainer, the extension part and the splicing part are arranged in sequence and spaced in the circumferential direction along the central axis of the left frame and the right frame, and are respectively located between the two semicircular grooves on the left frame and the right frame.

[0016] Compared with the prior art, the high-speed deep groove ball bearing cage structure design is simple, and a wear-resistant block is added between the rolling element. The wear-resistant block has a number of through holes, which greatly reduces damage to the cage body and prevents friction heat accumulation, thereby increasing the service life of the bearing. At the same time, a split splicing structure is adopted, and the splicing structure is used to improve the connection stability, which is convenient for later disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a simplified schematic diagram of the three-dimensional structure of the high-speed deep groove ball bearing cage.

[0018] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the high-speed deep groove ball bearing cage.

[0019] In the figure, 1, left frame; 2, right frame; 3, semicircular groove; 4, annular cavity; 5, wear-resistant block; 6, through hole; 7, splicing hole; 8, extension part; 9, mortise and tenon pin; 10, through hole; 11, mortise hole. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2As shown, the high-speed deep groove ball bearing retainer includes a retainer body with a split splicing structure, the retainer body is composed of a left frame body 1 and a right frame body 2, a plurality of splicing structures for splicing and improving the connection stability are arranged between the left frame body 1 and the right frame body 2, the left frame body 1 and the right frame body 2 are arranged in a relative structure, a plurality of semicircular grooves 3 are opened on the left frame body 1 and the right frame body 2, two opposite semicircular grooves 3 cooperate to form an annular cavity 4, and wear-resistant blocks 5 for improving the wear resistance are arranged in the semicircular grooves 3, the annular cavity 4 has rolling bodies, the cross section of the wear-resistant block 5 is arranged in a semicircular structure, and the wear-resistant block 5 has a plurality of through holes 6 for rapid volatilization and heat dissipation. The structure includes a splicing hole 7 opened on the opposite side wall of the right frame 2, an extension part 8 arranged on the left frame 1 and matched with the splicing hole 7, and a mortise and tenon pin 9 for radial locking and limiting. The splicing structure is located between the two annular cavities 4, and the splicing hole 7 and the extension part 8 are respectively located on the right frame 2 and the left frame 1, and radial locking and limiting are performed by the mortise and tenon pin 9. The above structure is simple in design, and a wear-resistant block 5 is added between the rolling element. The wear-resistant block 5 has a plurality of through holes 6, which greatly reduces damage to the retaining frame body and prevents friction heat accumulation, thereby increasing the service life of the bearing. At the same time, a split splicing structure is adopted, and the splicing structure is used to improve the connection stability, which is convenient for later disassembly and maintenance.

[0022] To elaborate further, in order to improve the connection stability between the left frame 1 and the right frame 2, the extension part 8 and the splicing hole 7 are both arranged in a stepped structure, and a through hole 10 for the mortise and tenon pin 9 to penetrate and communicate with the splicing hole 7 is opened at a corresponding position on the right frame 2, and a mortise and tenon hole 11 that cooperates with the mortise and tenon pin 9 is provided on the extension part 8. The left frame 1 is penetrated into the corresponding splicing hole 7 on the right frame 2 through a plurality of extension parts 8, so that the mortise and tenon hole 11 on the extension part 8 is aligned with the corresponding through hole 10, and the mortise and tenon pin 9 is penetrated into the through hole 10 and into the corresponding mortise and tenon hole 11 for radial locking and limiting. The extension part 8 and the splicing part are respectively arranged in sequence in a circumferential direction along the central axis of the left frame 1 and the right frame 2, and are respectively located between the two semicircular grooves 3 on the left frame 1 and the right frame 2.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0024] Although the terms such as left frame 1, right frame 2, semicircular groove 3, annular cavity 4, wear block 5, through hole 6, splicing hole 7, extension 8, mortise and tenon pin 9, through hole 10, mortise hole 11 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A high speed deep groove ball bearing cage, characterized in that: It comprises a retaining frame body arranged in a split splicing structure, the retaining frame body being composed of a left frame body (1) and a right frame body (2) being spliced ​​together, and a plurality of splicing structures for splicing and improving connection stability are arranged between the left frame body (1) and the right frame body (2); The left frame (1) and the right frame (2) are arranged in a relative structure; The left frame (1) and the right frame (2) are both provided with a plurality of semicircular grooves (3), two opposite semicircular grooves (3) cooperate to form an annular cavity (4), and wear-resistant blocks (5) for improving wear resistance are provided in the semicircular grooves (3); The annular cavity (4) has a rolling body therein; The cross section of the wear-resistant block (5) is arranged in a semicircular structure; The wear-resistant block (5) has a plurality of through holes (6) for rapid volatilization and heat dissipation; The splicing structure comprises a splicing hole (7) formed on the opposite side wall of the right frame (2), an extension portion (8) provided on the left frame (1) and matching with the splicing hole (7), and a mortise and tenon pin (9) for radial locking and limiting. The splicing structure is located between the two annular cavities (4), and the splicing hole (7) and the extension portion (8) are respectively located on the right frame body (2) and the left frame body (1), and radial locking and limiting are performed through the mortise and tenon pins (9).

2. A high speed deep groove ball bearing cage according to claim 1, characterized in that: The extension portion (8) and the splicing hole (7) are both arranged in a stepped structure. A through hole (10) for the mortise and tenon pin (9) to penetrate and communicate with the splicing hole (7) is provided at a corresponding position on the right frame body (2). The extension portion (8) has a mortise hole (11) that cooperates with the mortise and tenon pin (9).

3. A high speed deep groove ball bearing cage according to claim 2, characterized in that: The left frame (1) is inserted into the corresponding splicing holes (7) on the right frame (2) through a plurality of extensions (8), so that the mortise holes (11) on the extensions (8) are aligned with the corresponding through holes (10), and the mortise and tenon pins (9) are inserted into the through holes (10) and then into the corresponding mortise holes (11) to perform radial locking and limiting.

4. A high speed deep groove ball bearing cage according to claim 3, characterized in that: The extension portion (8) and the splicing portion are respectively arranged in a circumferential direction along the central axis of the left frame (1) and the right frame (2) and are spaced apart from each other and are respectively located between two semicircular grooves (3) on the left frame (1) and the right frame (2).

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