High-strength double-roller bearing retainer and bearing

Abstract

The utility model discloses a high-strength double-roller bearing retainer and a bearing, and belongs to the technical field of bearing retainers. The retainer comprises two end rings, the number of the end rings is two, the two end rings are arranged in parallel in a spaced mode, and the axes of the two end rings are collinear; the two ends of the supporting beams are fixedly connected with the two end rings respectively, the multiple supporting beams are evenly arranged in the circumferential direction of the end rings, a window hole is formed between every two adjacent supporting beams, and two rollers are contained in each window hole in the length direction of the supporting beams; the spacing part is located between the two end rings, the spacing part is connected with the supporting beam, each window hole is evenly divided into two pocket holes by the spacing part, and the two rollers are located in the two pocket holes respectively; the limiting parts are located on the side walls of the supporting beams, and the limiting parts abut against the side faces of the rollers. The technical problem that in the prior art, friction is likely to be generated between rollers in a double-roller bearing is solved.

Description

Technical Field

[0001] This utility model relates to the field of bearing cage technology, and in particular to a high-strength double roller bearing cage and bearing. Background Technology

[0002] The bearing cage, as one of the main components of a bearing, is used to enclose and isolate the rolling elements (i.e., rollers), ensuring that the rollers maintain the proper spacing and position between the inner and outer rings of the bearing. Its main function is to guide the rollers to move along a predetermined trajectory within the bearing, while preventing the rollers from contacting each other, thereby reducing friction and wear, and improving the bearing's operating efficiency and lifespan.

[0003] Due to their high load-carrying capacity, double roller bearings are widely used in various heavy machinery and equipment. In double roller bearings, the cage and rollers need to provide sufficient load-carrying capacity and stability. In order to solve the technical problem of easy friction between rollers in existing double roller bearings, a high-strength double roller bearing cage is proposed. Utility Model Content

[0004] The main purpose of this utility model is to provide a high-strength double roller bearing cage and bearing, which aims to solve the technical problem of easy friction between the rollers in the existing double roller bearing.

[0005] To achieve the above objectives, the present invention proposes a high-strength double roller bearing cage, comprising:

[0006] The end rings are provided in two, which are spaced apart and arranged in parallel, and the axes of the two end rings are collinear.

[0007] A support beam, the two ends of which are fixedly connected to two end rings respectively, and a plurality of support beams are evenly arranged along the circumference of the end rings. A window is formed between two adjacent support beams. In the length direction of the support beam, each window contains two rollers.

[0008] The spacer is located between the two end rings and is connected to the support beam. The spacer evenly divides each window opening into two pockets, and the two rollers are respectively located in the two pockets.

[0009] A limiting part is located on the side wall of the support beam and abuts against the side of the roller.

[0010] Optionally, in one embodiment of the present invention, the spacer portion is a spacer ring.

[0011] Optionally, in one embodiment of the present invention, the limiting portion includes:

[0012] A limiting block, which abuts against the side of the roller;

[0013] A connecting ramp is provided, which is connected to the limiting block. The high point of the connecting ramp is connected to the limiting block, and the low point is connected to the side wall of the supporting beam.

[0014] Optionally, in one embodiment of the present invention, at least 2n limiting parts are provided inside the pocket, and n limiting parts are provided on each side wall of the pocket.

[0015] Optionally, in one embodiment of the present invention, four limiting parts are provided inside the pocket, and two limiting parts are provided on the side wall of each pocket, with the limiting parts located at both ends of the side wall.

[0016] Optionally, in one embodiment of the present invention, a protrusion is further included, the protrusion being located at the center of the top and bottom walls of the pocket.

[0017] Optionally, in one embodiment of the present invention, the protrusion is a trapezoid.

[0018] Optionally, in one embodiment of the present invention, a reinforcing beam is further included, the reinforcing beam being connected to the supporting beam, and the reinforcing beam being located on the side of the supporting beam near the center of the end ring.

[0019] Optionally, in one embodiment of the present invention, the end ring, the support beam, the spacer, the limiting part, the protrusion, and the reinforcing beam are an integral structure.

[0020] To achieve the above objectives, this utility model also proposes a bearing, including a high-strength double roller bearing cage as described above.

[0021] Compared with existing technologies, this invention achieves at least the following beneficial effects. In this invention, the end rings and support beams serve as the frame of the retainer. Multiple support beams are arranged at intervals to form openings for accommodating rollers. Each opening can accommodate two rollers along the length of the support beams. If two rollers are directly accommodated in each opening, they will come into contact and rub against each other during operation, causing wear and affecting the smoothness of rotation. To solve this problem, a spacer is provided between the two end rings, dividing the opening into two independent pockets, each containing one roller. During operation, each roller rotates independently within its respective pocket, reducing contact between rollers and solving the technical problem of easy friction between rollers in existing double-roller bearings. Attached Figure Description

[0022] 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 the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the high-strength double roller bearing cage of this utility model;

[0024] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0025] Explanation of icon numbers:

[0026] 100, End ring; 200, Support beam; 210, Window opening; 220, Pocket; 300, Spacing part; 400, Limiting part; 410, Limiting block; 420, Connecting ramp; 500, Protrusion; 600, Reinforcing beam;

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] 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.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Reference Figure 1 and Figure 2 This utility model proposes a high-strength double roller bearing cage, comprising:

[0033] There are two end rings 100, which are spaced apart and parallel to each other, and the axes of the two end rings 100 are collinear.

[0034] Support beam 200, with its two ends fixedly connected to two end rings 100 respectively. Multiple support beams 200 are evenly arranged along the circumference of the end rings 100. A window 210 is formed between two adjacent support beams 200. In the length direction of the support beam 200, each window 210 can accommodate two rollers.

[0035] The spacer 300 is located between the two end rings 100 and is connected to the support beam 200. The spacer 300 evenly divides each window opening 210 into two pockets 220, and the two rollers are located in the two pockets 220 respectively.

[0036] The limiting part 400 is located on the side wall of the support beam 200 and abuts against the side of the roller.

[0037] The end ring 100 and support beam 200 form the cage frame. Multiple support beams 200 are arranged at intervals to form openings 210 for accommodating rollers. Each opening 210 can accommodate two rollers along the length of the support beam 200. If two rollers are directly accommodated in each opening 210, they will come into contact and rub against each other during operation, leading to wear and affecting the smoothness of rotation. To solve this problem, a spacer 300 is provided between the two end rings 100, dividing the opening 210 into two independent pockets 220, each containing one roller. During operation, each roller rotates independently within its respective pocket 220, reducing contact between rollers during operation and solving the technical problem of friction between rollers in existing double-roller bearings.

[0038] Because the cage needs to bear a large load, to reduce the possibility of deformation due to excessive load, a reinforcing beam 600 is connected to the support beam 200 to improve the structural strength of the support beam 200. To further improve the overall structural strength of the cage, all components of the cage in this design are integrally molded. The integrally molded cage structure has no weak points in the connection, reducing the possibility of breakage at the connection due to excessive load.

[0039] Specifically, in one embodiment, the spacer 300 consists of spacer protrusions to separate the rollers. Within each window 210, the spacer protrusions are symmetrically arranged at the midpoints of the sidewalls on both sides of the support beam 200, separating the end faces of two rollers within the same window 210. After the rollers are separated by the spacer protrusions, the space between two opposing spacer protrusions provides a path for the flow of lubricating oil, facilitating lubrication of the roller end faces.

[0040] In another embodiment, the spacer 300 has a ring-shaped structure, i.e., a spacer ring. The spacer ring is located between the two end rings 100 and connects to the support beam 200 to form a cross structure. The window 210 is divided into two completely independent pockets 220 by the spacer ring. Besides preventing friction between the rollers during operation, the spacer ring also enhances the structural strength of the cage. In twin-roller bearings, besides the rollers, the cage is also a major load-bearing structure; therefore, the structural strength of the cage directly affects the bearing's durability. When the bearing encounters a large axial impact, the spacer ring helps prevent cage deformation or damage.

[0041] Furthermore, the limiting part 400 is used to limit the two sides of the roller to ensure that the roller rotates in a stable posture during operation. Specifically, at least 2n limiting parts 400 are provided in each pocket 220, and the limiting parts 400 in each pocket 220 are symmetrically distributed on the two side walls. The limiting part 400 is composed of a limiting block 410 and a connecting ramp 420.

[0042] In one embodiment, two limiting parts 400 are provided within a pocket 220, each located at the center of the sidewall of the pocket 220, to limit the center of the roller and ensure its balance and stability during operation. In this case, connecting ramps 420 are provided on both sides of the limiting block 410. The connecting ramps 420 are used to guide lubricating oil between the roller and the sidewall of the pocket 220, ensuring sufficient lubricating oil between them. Furthermore, a gap exists between the roller and the sidewall of the pocket 220, providing a path for the flow of lubricating oil.

[0043] In another embodiment, four limiting parts 400 are provided within a pocket 220, with limiting parts 400 at both ends of the sidewall of each pocket 220 to limit the ends of the roller and prevent excessive movement of the roller during operation. In this case, a connecting ramp 420 is provided on the side of the limiting block 410 near the center of the sidewall, and the other sides of the two limiting blocks 410 are connected to the top and bottom walls of the pocket 220, respectively.

[0044] In another embodiment, six limiting portions 400 are provided within a pocket 220. This embodiment is a combination of the two embodiments described above. Specifically, three limiting portions 400 are provided on each side wall of the pocket 220. The limiting portion 400 in the middle of the side wall has a limiting block 410, and connecting ramps 420 are provided on both sides of the limiting block 410. The limiting portions 400 at both ends of the side wall have a limiting block 410. The limiting block 410 has a connecting ramp 420 on one side near the center of the side wall, and the other side is connected to the top or bottom wall of the pocket 220.

[0045] Furthermore, the cage also has a protrusion 500, specifically a trapezoidal portion located at the center of the top and bottom walls of the pocket 220. The top surface of the trapezoid abuts against the end face of the roller, and the inclined surface of the trapezoid functions similarly to the connecting ramp 420, guiding lubricating oil between the roller end face and the pocket 220. After the roller is installed, due to the presence of the protrusion 500, a gap exists between the roller end face and the pocket 220, providing a path for the flow of lubricating oil.

[0046] This utility model also proposes a bearing, which includes a cage as described above. Specifically, the specific structure of the cage refers to the above embodiments. Since this bearing adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0047] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A high-strength double roller bearing cage, characterized in that, include: The end rings are provided in two, which are spaced apart and arranged in parallel, and the axes of the two end rings are collinear. A support beam, the two ends of which are fixedly connected to two end rings respectively, and a plurality of support beams are evenly arranged along the circumference of the end rings. A window is formed between two adjacent support beams. In the length direction of the support beam, each window contains two rollers. The spacer is located between the two end rings and is connected to the support beam. The spacer evenly divides each window opening into two pockets, and the two rollers are respectively located in the two pockets. A limiting part is located on the side wall of the support beam and abuts against the side of the roller.

2. The high-strength double roller bearing cage as described in claim 1, characterized in that, The spacer portion is a spacer ring.

3. The high-strength double roller bearing cage as described in claim 1, characterized in that, The limiting part includes: A limiting block, which abuts against the side of the roller; A connecting ramp is provided, which is connected to the limiting block. The high point of the connecting ramp is connected to the limiting block, and the low point is connected to the side wall of the supporting beam.

4. The high-strength double roller bearing cage as described in claim 3, characterized in that, At least 2n limiting parts are provided inside the pocket, and n limiting parts are provided on each side wall of the pocket.

5. The high-strength double roller bearing cage as described in claim 4, characterized in that, The pocket portion is provided with four limiting parts, and two limiting parts are provided on the side wall of each pocket portion, with the limiting parts located at both ends of the side wall.

6. The high-strength double roller bearing cage as described in claim 1, characterized in that, It also includes a protrusion located at the center of the top and bottom walls of the pocket.

7. The high-strength double roller bearing cage as described in claim 6, characterized in that, The protrusion is a trapezoid.

8. The high-strength double roller bearing cage as described in claim 6, characterized in that, It also includes a reinforcing beam, which is connected to the support beam and is located on the side of the support beam near the center of the end ring.

9. The high-strength double roller bearing cage as described in claim 8, characterized in that, The end ring, the support beam, the spacer, the limiting part, the protrusion, and the reinforcing beam are an integral structure.

10. A bearing, characterized in that, Includes the high-strength double roller bearing cage as described in any one of claims 1-9.

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