Novel bearing retainer

Abstract

The novel bearing retainer comprises a rear shell, main shells and an inner positioning groove, the front side of the rear shell is provided with a group of main shells used for limiting the position of an inner bearing body, the front side view cross section of each main shell is of an arc-shaped concave structure, the front side of each main shell is provided with a group of front shells used for limiting the position of the front side of the inner bearing body, and the front side view cross section of each main shell is of an arc-shaped concave structure. Compared with the prior art, the utility model has the following beneficial effects: the position of the sealing strip is preliminarily fixed through the inner fixing hole, the inner bearing body is accurately placed in the bearing cavity of the main shell, so that the bead groove is completely matched with the limiting structure of the shell, and the inner bearing body needs to be manually rotated after installation to verify the fit clearance between the inner bearing body and the sealing strip and the fit clearance between the inner bearing body and the limiting structure; and lubricant is injected after no abnormal friction is confirmed, the sealing strip can effectively prevent pollutants from entering a bearing cavity during operation, and the concave structure of the base can disperse axial load, so that the bearing is ensured to keep balanced distribution of force in the operation and use process.

Description

Technical Field

[0001] This utility model belongs to the field of bearing cage technology and relates to a novel bearing cage. Background Technology

[0002] The main drawbacks of existing bearing cages in terms of uniform bearing stress distribution lie in their inability to completely eliminate frictional differences between rolling elements and cage deformation. Because cage design often cannot guarantee perfectly uniform friction between each rolling element and the cage, uneven stress distribution may occur during bearing operation. Furthermore, cage deformation under high-speed rotation or heavy loads can further exacerbate this uneven stress distribution. Conventional solutions include optimizing cage design, such as using symmetrical structures, and reducing friction between rolling elements and the cage through lubrication. However, these methods have drawbacks: optimized design and improved machining accuracy often come at the cost of increased costs, and while lubrication can reduce friction, its effectiveness may be significantly reduced under high temperatures, high speeds, or harsh environments, and it requires regular maintenance and replacement, increasing maintenance costs and complexity. Therefore, a new type of bearing cage is urgently needed to address these issues. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of bearing cage to solve the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a novel bearing cage, comprising: a rear shell, a main shell, and an inner positioning groove, wherein a set of main shells for limiting the position of the inner bearing body is provided on the front side of the rear shell, and the front cross-section of the main shell is an arc-shaped concave structure.

[0005] The main shell has a set of front shells on the front side for limiting the position of the inner bearing body on the front side. The front shell has a set of inner limiting baffles on the rear side for limiting the outer side of the inner bearing body. The inner limiting baffles are integral with the front shells. The inner limiting baffles are interlocked with the outer side of the ball groove of the inner bearing body and do not contact the bearing balls inside the ball groove of the inner bearing body. The rear shell has a set of inner limiting baffles on the front side for limiting the rear side of the inner bearing body.

[0006] In a preferred embodiment, the inner limiting baffle inside the front shell and the inner limiting baffle inside the rear shell are of the same specifications. The front shell and the rear shell are of the same specifications and are respectively connected and fixed to the front and rear of the main shell by a number of sets of fixing bolts.

[0007] In a preferred embodiment, several sets of fixing bolts are evenly distributed in a ring structure inside the front and rear shells. The inner diameter of the front cross-section of the front shell is the same as the inner diameter of the outer cross-section of the main shell. In actual use, the inner bearing body is first placed in the arc-shaped concave structure of the main shell, ensuring that its bead groove and the inner limiting stop are aligned. Then, the front and rear shells are aligned with the front and rear ends of the main shell, respectively, and pre-connected by fixing bolts. Note that the inner limiting stop of the front shell must be fully engaged with the outer side of the bead groove on the front side of the inner bearing body, and the inner limiting stop of the rear shell must be inserted into the limiting groove on the rear side of the inner bearing body. The fixing bolts distributed in a ring are tightened one by one with tools to ensure that the front shell, main shell and rear shell are fully pressed together and the inner diameters of their cross-sections are aligned. After installation, check whether the outer sealing strip completely covers the shell joint. Finally, the whole assembly is embedded into the bearing cavity of the equipment through the fixing base and axially fixed by the upper positioning seat and the inner positioning hole.

[0008] In a preferred embodiment, the inner sides of the front and rear shells are respectively provided with a set of outer sealing strips for maintaining the limiting and sealing effect inside the bearing cavity, and the left side of the outer sealing strip is provided with a set of inner fixing holes for connecting and fixing with the front and rear shells.

[0009] In a preferred embodiment, the front cross-section of the front shell and the rear shell is an annular structure, and the lower end of the front shell, the rear shell and the main shell is provided with a set of fixed bases for supporting their bottoms, and the front cross-section of the fixed bases is a concave structure.

[0010] In a preferred embodiment, the upper left and right sides of the fixed base are respectively provided with internal fixing holes for fixing with external fasteners. The main shell has a set of bearing cavities for limiting the inner bearing body. The bearing cavity contains a set of inner bearing bodies. The outer sealing strip is fitted and positioned with the inner side of the inner bearing body. Before actual assembly, the integrity of the annular structure of the front shell, rear shell, and main shell needs to be checked to ensure that the inner fixing holes of the outer sealing strip are accurately aligned with the corresponding positions of the shells. The outer sealing strip is embedded into the sealing grooves on the inner sides of the front and rear shells. The position of the sealing strip is initially fixed through the inner fixing holes. The inner bearing body is then accurately placed into the main shell. The bearing cavity is designed so that the ball grooves fit perfectly with the housing's limiting structure. The fixed base is aligned with the lower end of the main housing through a concave structure. Bolts are used to connect the fixed base to the external support through the fixing holes inside the base. When the front and rear housings are closed, it is necessary to ensure that the outer sealing strip fits tightly with the inner bearing body. Then, the three housing parts are locked together with fixing bolts. After installation, the inner bearing body needs to be manually rotated to verify its fit clearance with the sealing strip and limiting structure. After confirming that there is no abnormal friction, lubricant is injected. During operation, the sealing strip can effectively prevent contaminants from entering the bearing cavity. The concave structure of the base can distribute the axial load, thereby ensuring that the bearing maintains a balanced force distribution during operation.

[0011] After adopting the above technical solution, the beneficial effects of this utility model are as follows: First, the inner bearing body is placed in the arc-shaped concave structure of the main shell to ensure that its bead groove and the inner limiting stop are aligned. Then, the front shell and the rear shell are aligned with the front and rear ends of the main shell respectively, and pre-connected by fixing bolts. Note that the inner limiting stop of the front shell must be fully fitted with the outer side of the bead groove on the front side of the inner bearing body, and the inner limiting stop of the rear shell must be inserted into the limiting groove on the rear side of the inner bearing body. Use tools to tighten the ring-shaped fixing bolts one by one to ensure that the front shell, the main shell and the rear shell are fully pressed together and the inner diameter of the cross section is aligned.

[0012] The sealing strip is initially fixed in position through the internal fixing hole. The inner bearing body is then precisely placed into the main housing bearing cavity, ensuring that its ball grooves completely match the housing limiting structure. The fixing base is aligned with the lower end of the main housing through the concave structure. Bolts are used to connect the base to the external support through the internal fixing hole. When the front and rear housings are closed, it is necessary to ensure that the outer sealing strip and the inner side of the inner bearing body form a tight fit. Then, the three housing parts are locked with fixing bolts. After installation, the inner bearing body needs to be manually rotated to verify its fit clearance with the sealing strip and the limiting structure. After confirming that there is no abnormal friction, lubricant is injected. During operation, the sealing strip can effectively prevent contaminants from entering the bearing cavity, and the concave structure of the base can distribute the axial load, thereby ensuring that the bearing maintains a balanced force distribution during operation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a top view of the left oblique front side of a novel bearing cage according to the present invention;

[0015] Figure 2 This is a top view of the left oblique front side of the bearing cavity in a novel bearing cage according to this utility model;

[0016] Figure 3 This is a top view of the left oblique front side of the interior of the rear shell and the front shell of a novel bearing cage according to this utility model.

[0017] Figure 4 This is a top view of the left oblique front side of the structure of the inner bearing body and two sets of outer sealing strips in a novel bearing cage according to this utility model;

[0018] In the diagram: 100-rear shell, 110-main shell, 120-upper positioning seat, 130-front shell, 140-fixing bolt, 150-outer sealing strip, 160-inner bearing body, 170-fixed base, 180-bearing cavity, 190-inner limit stop, 200-fitting groove, 210-inner positioning hole, 220-inner positioning groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 As the first embodiment of this utility model:

[0021] A novel bearing cage includes: a rear shell 100, a main shell 110 and an inner positioning groove 220. The rear shell 100 is provided with a set of main shells 110 for limiting the position of the inner bearing body 160. The front cross-section of the main shell 110 is an arc-shaped concave structure.

[0022] The main housing 110 has a set of front housings 130 for limiting the front position of the inner bearing body 160. The front housing 130 has a set of inner limiting baffles for limiting the outer side of the inner bearing body 160. The inner limiting baffles are integral with the front housing 130. The inner limiting baffles are interlocked with the outer side of the ball groove of the inner bearing body 160 and do not contact the bearing balls inside the ball groove of the inner bearing body 160. The rear housing 100 has a set of inner limiting baffles for limiting the rear side of the inner bearing body 160.

[0023] The inner limiting baffle inside the front shell 130 has the same specifications as the inner limiting baffle inside the rear shell 100. The front shell 130 and the rear shell 100 have the same specifications and are respectively connected and fixed to the front and rear of the main shell 110 by several sets of fixing bolts 140.

[0024] Several sets of fixing bolts 140 are evenly distributed in a ring structure inside the front shell 130 and the rear shell 100. The inner diameter of the front cross-section of the front shell 130 is the same as the inner diameter of the outer cross-section of the main shell 110. In actual use, the inner bearing body 160 is first placed in the arc-shaped concave structure of the main shell 110, ensuring that its ball groove and the inner limiting stop are aligned. Then, the front shell 130 and the rear shell 100 are aligned with the front and rear ends of the main shell 110, respectively, and pre-connected by fixing bolts 140. Note that the inner limiting stop of the front shell 130 must be aligned with the inner shaft. The outer side of the front bead groove of the bearing body 160 is fully fitted, and the inner limiting stop of the rear shell 100 needs to be inserted into the rear limiting groove of the inner bearing body 160. Use tools to tighten the ring-shaped fixing bolts 140 one by one to ensure that the front shell 130, the main shell 110 and the rear shell 100 are fully pressed together and the inner diameters of the cross sections are aligned. After installation, check whether the outer sealing strip 150 completely covers the shell joint. Finally, the whole assembly is embedded into the equipment bearing cavity 180 through the fixing base 170 and axially fixed by the upper positioning seat 120 and the inner positioning hole 210.

[0025] Please see Figures 1-4 As a second embodiment of the present invention: based on the description in the above embodiments, further, the inner sides of the front shell 130 and the rear shell 100 are respectively provided with a set of outer sealing strips 150 for maintaining the internal limiting and sealing effect of the bearing cavity 180, and the left side of the outer sealing strip 150 is provided with a set of inner fixing holes for connecting and fixing with the front shell 130 and the rear shell 100.

[0026] The front shell 130 and the rear shell 100 have a ring-shaped cross-section on the front side. The front shell 130, the rear shell 100 and the main shell 110 are provided with a set of fixed bases 170 for supporting their bottoms. The front cross-section of the fixed bases 170 has a concave shape.

[0027] The upper left and right sides of the fixed base 170 are respectively provided with internal fixing holes for fixing with external fasteners. The main shell 110 has a set of bearing cavities 180 for limiting the inner bearing body 160. The bearing cavity 180 contains a set of inner bearing bodies 160. The outer sealing strip 150 is fitted and positioned with the inner side of the inner bearing body 160. Before actual assembly, the integrity of the annular structure of the front shell 130, rear shell 100 and main shell 110 should be checked to ensure that the internal fixing holes of the outer sealing strip 150 are accurately aligned with the corresponding positions of the shells. The outer sealing strip 150 is embedded into the sealing grooves on the inner side of the front shell 130 and rear shell 100. The position of the sealing strip is initially fixed through the internal fixing holes. The inner bearing body 160 is then accurately placed into the main shell 110. The bearing cavity 180 is designed so that its ball grooves fit perfectly with the housing limiting structure. The fixed base 170 is aligned with the lower end of the main housing 110 through the concave structure. Bolts are used to connect it to the external support through the fixing holes in the base. When the front housing 130 and the rear housing 100 are closed, it is necessary to ensure that the outer sealing strip 150 and the inner side of the inner bearing body 160 form a tight fit. Then, the three housing parts are locked by the fixing bolt 140. After installation, the inner bearing body 160 needs to be manually rotated to verify its fit clearance with the sealing strip and the limiting structure. After confirming that there is no abnormal friction, lubricant is injected. During operation, the sealing strip can effectively prevent contaminants from entering the bearing cavity 180. The concave structure of the base can distribute the axial load, thereby ensuring that the bearing maintains a balanced force distribution during operation.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel bearing cage, comprising: The rear shell (100), the main shell (110) and the inner positioning groove (220) are characterized in that: the front side of the rear shell (100) is provided with a set of main shells (110) for limiting the position of the inner bearing body (160), and the front cross-section of the main shell (110) is an arc-shaped concave structure; The main shell (110) has a set of front shells (130) on the front side for limiting the position of the inner bearing body (160) on the front side. The front shell (130) has a set of inner limiting baffles on the rear side for limiting the outer side of the inner bearing body (160). The inner limiting baffles are integral with the front shell (130). The inner limiting baffles are interlocked with the outer side of the ball groove of the inner bearing body (160) and do not contact the bearing balls inside the ball groove of the inner bearing body (160). The rear shell (100) has a set of inner limiting baffles on the front side for limiting the rear side of the inner bearing body (160).

2. The novel bearing cage according to claim 1, characterized in that: The inner limiting baffle inside the front shell (130) and the inner limiting baffle inside the rear shell (100) have the same specifications. The front shell (130) and the rear shell (100) have the same specifications and are respectively connected and fixed to the front and rear of the main shell (110) by several sets of fixing bolts (140).

3. A novel bearing cage according to claim 2, characterized in that: Several sets of fixing bolts (140) are evenly distributed in a ring structure inside the front shell (130) and the rear shell (100). The inner diameter of the front cross-section of the front shell (130) is consistent with the inner diameter of the outer cross-section of the main shell (110).

4. A novel bearing cage according to claim 3, characterized in that: The front shell (130) and the rear shell (100) are respectively provided with a set of outer sealing strips (150) for maintaining the internal limiting and sealing effect of the bearing cavity (180). The left side of the outer sealing strip (150) is provided with a set of inner fixing holes for connecting and fixing with the front shell (130) and the rear shell (100).

5. A novel bearing cage according to claim 4, characterized in that: The front shell (130) and the rear shell (100) have a ring-shaped cross-section on the front side. The front shell (130), the rear shell (100) and the main shell (110) are provided with a set of fixed bases (170) for supporting their bottoms. The front cross-section of the fixed bases (170) is a concave structure.

6. A novel bearing cage according to claim 5, characterized in that: The upper left and right sides of the fixed base (170) are respectively provided with internal fixing holes for fixing with external fixing bolts. The main shell (110) is provided with a set of bearing cavities (180) for limiting the inner bearing body (160). The bearing cavity (180) is provided with a set of inner bearing bodies (160). The outer sealing strip (150) and the inner side of the inner bearing body (160) are mutually fitted and positioned.

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