Cylindrical roller bearing retainer structure

Abstract

The utility model provides a cylindrical roller bearing retainer structure which comprises a main body and a roller, a plurality of pockets are arranged on the main body at intervals, connecting arms are arranged on the main body between adjacent pockets, bosses extending inwards in the radial direction are arranged on the connecting arms, the two sides of each connecting arm are arranged in an inwards-concave mode, and the rollers are arranged in the bosses. The two concave sides of the connecting arm are installed corresponding to the peripheral wall of the roller in a matched mode, the boss forms a self-locking structure with the trapezoidal section through the concave portion, self-locking of the roller can be formed, guide inclined faces are arranged on the two side walls of the radial end of the boss, and anti-disengaging structures for preventing the roller from further disengaging are arranged on the guide inclined faces. The guide slopes are arranged on the two side walls of the radial end of the boss, smooth sliding installation of the roller on the main body is facilitated, friction and abrasion are reduced, the anti-disengaging structures for preventing the roller from further disengaging are arranged on the guide slopes, and the roller can be prevented from being locked in the pocket holes after the self-locking structures lose efficacy.

Description

Technical Field

[0001] The utility model relates to a cage structure of a cylindrical roller bearing. Background Art

[0002] The cage of a cylindrical roller bearing, also known as the cage of a cylindrical roller bearing, is an important component of a cylindrical roller bearing; its main function is to fix and keep the rollers in the bearing evenly distributed, prevent the rollers from contacting each other, so as to reduce friction and wear, and at the same time ensure the correct positions of the rollers to ensure the smooth operation of the bearing.

[0003] The cage separates the rollers from each other to prevent them from colliding with each other during the operation of the bearing; it also guides the rollers to roll along the correct track to maintain the accuracy of the bearing; the design and material selection of the cage of a cylindrical roller bearing have an important impact on the performance and service life of the bearing, especially for bearings operating at high speeds, under high loads or in harsh environments.

[0004] At present, the existing cages of cylindrical roller bearings generally have general load-bearing strength performance, and the function of locking the rollers of this bearing is poor, resulting in the rollers in the bearing being easily detached, leading to a short overall service life of the bearing, reducing the working efficiency of the bearing, and prone to problems such as roller detachment or displacement. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a cage structure of a cylindrical roller bearing.

[0006] To achieve the above object, the utility model provides a cage structure of a cylindrical roller bearing, including a main body and rollers. A plurality of pocket holes are arranged on the main body at intervals. A connecting arm is arranged between the adjacent pocket holes on the main body. A convex platform extending radially inwards is arranged on the connecting arm. The two sides of the connecting arm are concave. The concave sides of the connecting arm are respectively adapted to be installed corresponding to the outer peripheral walls of the rollers. The convex platform forms a self-locking structure with a trapezoidal cross-section through the concave part, which can form self-locking of the rollers. Guide inclined surfaces are arranged on the two side walls at the radial end of the convex platform, and an anti-detachment structure for preventing the rollers from further coming out is arranged on the guide inclined surfaces.

[0007] Further, the anti-detachment structure includes a concave cavity arranged on the guide inclined surface, and an elastic retaining ring installed in the concave cavity and partially protruding out of the concave cavity. The elastic retaining rings arranged on the guide inclined surfaces of adjacent convex platforms can form an anti-detachment structure for preventing the rollers from radially moving inwards.

[0008] Further, the guide inclined surfaces oppositely arranged on two adjacent convex platforms are arranged at an included angle of 40°.

[0009] Further, a chute axially penetrating through is provided on the radial end face of the connecting arm, a sliding block is provided at the lower end of the boss corresponding to the chute, and the boss is in guiding sliding connection with the sliding block through the chute.

[0010] Further, a first positioning hole is provided at the lower end of the sliding block, a compression spring is arranged in the first positioning hole, one end of the compression spring is connected with a ball, a second positioning hole is provided at the bottom of the chute, and when the first positioning hole is aligned with the second positioning hole, the ball is embedded into the second positioning hole to form positioning.

[0011] Further, the main body is made of stainless steel.

[0012] The beneficial effects of the utility model are as follows: The combination of adjacent bosses realizes the locking of the rollers, improves the hardness of the cage and the locking ability of the rollers, avoids the problems that the cage is easily broken, resulting in the falling off and crosstalk of the rollers. Guide inclined surfaces are provided on both side walls of the radial end of the boss, which helps the rollers to slide and install smoothly on the main body, reduces friction and wear. An anti-detachment structure for preventing the further detachment of the rollers is provided on the guide inclined surface, which can prevent the rollers from being locked in the pocket holes after the self-locking structure fails. This design further enhances the fixing of the rollers, prevents the occurrence of accidental detachment, so that the locking time of the rollers can be longer, and improves the service life of the retainer installed in the bearing, with high durability. Description of the Drawings

[0013] Figure 1 is a schematic cross-sectional structure diagram of an embodiment of the utility model;

[0014] Figure 2 is Figure 1 the enlarged structure diagram of part A of

[0015] Figure 3 is a schematic structure diagram of the boss of an embodiment of the utility model;

[0016] Figure 4 is a schematic side structure diagram of an embodiment of the utility model. Detailed Embodiments

[0017] The following further describes the embodiments of the present utility model in conjunction with the accompanying drawings: As shown in the figure, the structure of a cylindrical roller bearing cage includes a main body 1 and rollers 2. A number of pocket holes are spacedly arranged on the main body 1. A connecting arm 3 is arranged between adjacent pocket holes on the main body 1. A boss 4 extending radially inward is arranged on the connecting arm 3. Both sides of the connecting arm 3 are concave. The concave sides of the connecting arm 3 are respectively adapted and installed corresponding to the outer peripheral walls of the rollers 2. The boss 4 forms a self-locking structure with a trapezoidal cross-section through the concave, which can form the self-locking of the rollers 2. Guide inclined surfaces 5 are arranged on both side walls of the radial end of the boss 4. An anti-disengagement structure for preventing the rollers 2 from further disengaging is arranged on the guide inclined surfaces 5.

[0018] The anti-disengagement structure includes a concave cavity 6 arranged on the guide inclined surface 5 and an elastic retaining ring 7 installed in the concave cavity 6 and partially protruding from the concave cavity 6. The elastic retaining rings 7 arranged on the guide inclined surfaces 5 of adjacent bosses 4 can form an anti-disengagement structure for preventing the rollers 2 from radially moving inward.

[0019] The elastic retaining ring 7 is installed in the concave cavity 6 and partially protrudes from the concave cavity 6, which can form an anti-disengagement structure for preventing the rollers 2 from radially moving inward, ensuring that the rollers 2 will not move radially during operation, maintaining stability. The elastic retaining rings 7 arranged on the guide inclined surfaces 5 of adjacent bosses 4 can be adjusted according to the size of the rollers 2, improving adaptability and being able to be used for rollers 2 of different sizes; it can be used for a long time and adjusted repeatedly, with high durability.

[0020] The guide inclined surfaces 5 oppositely arranged on two adjacent bosses 4 are arranged at an included angle of 40°. This helps the rollers 2 to be smoothly slid and installed on the main body 1, reducing friction and wear caused by too large or too small angles, and improving the operating efficiency of the equipment. An appropriate included angle design helps to evenly distribute the contact force between the rollers 2 and the main body 1, reducing stress concentration and improving the durability of the equipment.

[0021] A chute 8 is axially penetrated and arranged on the radial end face of the connecting arm 3. A sliding block 9 is arranged corresponding to the chute 8 at the lower end of the boss 4. The boss 4 forms a guiding sliding connection with the sliding block 9 through the chute 8. The boss 4 forms a guiding sliding connection with the sliding block 9 through the chute 8, which can replace or maintain the boss 4 through the chute 8 and the sliding block 9, facilitating the adjustment of the boss 4. For example, different bosses 4 can be replaced to adapt to rollers 2 of different specifications, and it is also convenient for the adjustment and maintenance of the boss 4, improving the service life.

[0022] A first positioning hole 10 is provided at the lower end of the sliding block 9. A compression spring 11 is arranged in the first positioning hole 10. One end of the compression spring 11 is connected with a ball 12. A second positioning hole 13 is provided at the bottom of the sliding groove 8. When the first positioning hole 10 is aligned with the second positioning hole 13, the ball 12 is embedded in the second positioning hole 13 to form positioning. The ball automatically embeds in the second positioning hole under the action of the compression spring, realizing the automatic positioning of the sliding block 9 and the sliding groove 8, reducing the need for manual adjustment, improving the convenience of operation, enabling precise alignment and positioning, and making a sound when the ball falls into the second positioning hole to indicate that the positioning is completed.

[0023] The main body 1 is made of stainless steel.

[0024] The above embodiments are only one of the preferred specific embodiments of the present invention. The ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. A cylindrical roller bearing retainer structure, comprising a main body and a roller, wherein the main body is provided with a plurality of pockets at intervals, and the main body is provided with connecting arms between adjacent pockets, characterized in that: The connecting arm is provided with a boss extending radially inward, and the two sides of the connecting arm are concavely arranged. The two sides of the concave of the connecting arm are respectively adapted to the outer peripheral wall of the roller. The boss forms a self-locking structure with a trapezoidal cross-section through the concave, which can form self-locking of the roller. The two side walls of the radial end of the boss are provided with guide slopes, and the guide slopes are provided with anti-slip structures to prevent the roller from further slipping out.

2. The cylindrical roller bearing retainer structure according to claim 1, characterized in that: The anti-slip structure includes a concave cavity arranged on the guide inclined surface, and an elastic retaining ring installed in the concave cavity and partially protruding from the concave cavity. The elastic retaining ring arranged on the adjacent boss guide inclined surface can form an anti-slip structure for the roller to prevent it from moving radially inward.

3. The cylindrical roller bearing retainer structure according to claim 2, characterized in that: The guide inclined surfaces arranged opposite to each other on two adjacent bosses are arranged at an angle of 40°.

4. The cylindrical roller bearing retainer structure according to claim 2 or 3, characterized in that: The radial end surface of the connecting arm is provided with a sliding groove which is axially penetrated, and the lower end of the boss is provided with a sliding block corresponding to the sliding groove, and the boss forms a guided sliding connection with the sliding block through the sliding groove.

5. The cylindrical roller bearing retainer structure according to claim 4, characterized in that: A first positioning hole is provided at the lower end of the sliding block, a compression spring is provided in the first positioning hole, one end of the compression spring is connected to a ball, and a second positioning hole is provided at the bottom of the slide groove. When the first positioning hole is aligned with the second positioning hole, the ball is embedded in the second positioning hole to form a positioning.

6. The cylindrical roller bearing retainer structure according to claim 1, characterized in that: The main body is made of stainless steel.

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