Separated double-roller bearing retainer and bearing

Abstract

The utility model discloses a separated double-roller bearing retainer and a bearing, and belongs to the technical field of bearing retainers. The retainer comprises two end rings which are arranged in parallel at an interval, 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, and two rollers are contained in each window hole in the length direction of the supporting beams; the protruding parts are connected with the end rings, the protruding parts on the two end rings are oppositely arranged, and the protruding parts abut against the end faces of the rollers; the limiting parts are connected with the supporting beams, the limiting parts on every two adjacent supporting beams are oppositely arranged, and the limiting parts abut against the side faces of the rollers; two spaced protrusions are arranged in each window hole, the two spaced protrusions are located on the two limiting parts respectively, and the spaced protrusions separate the end faces of the two rollers. The double-row roller bearing retainer solves the technical problem that an existing double-row roller bearing retainer is high in noise and vibration during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing retainers, in particular to a separated double-roller bearing retainer and a bearing. Background Art

[0002] At present, the existing roller bearings on the market have low load capacity and are not convenient to disassemble, install, disassemble and repair. With the development of economy and technology, the requirements for the load and service life of roller bearings in some important application environments such as heavy-duty vehicles are becoming higher and higher.

[0003] Compared with single-row roller bearings, double-row roller bearings have higher load-bearing capacity, but double-row roller bearing cages have technical problems such as high noise and vibration during operation. Utility Model Content

[0004] The main purpose of the utility model is to provide a separated double roller bearing cage, aiming to reduce the technical problem of large noise and vibration of the double row roller bearing during operation.

[0005] To achieve the above-mentioned purpose, the utility model proposes a separated double roller bearing cage, comprising:

[0006] End rings, wherein two end rings are provided, the two end rings are spaced apart and arranged in parallel, and the axes of the two end rings are collinear;

[0007] A support beam, wherein both ends of the support beam are fixedly connected to the two end rings respectively, and a plurality of the support beams are evenly arranged along the circumference of the end ring, and a window hole is formed between two adjacent support beams, and each window hole accommodates two rollers in the length direction of the support beam;

[0008] A raised portion, the raised portion being connected to the end ring, the raised portions on the two end rings being arranged opposite to each other, and the raised portions abutting against the end surface of the roller;

[0009] A limiting portion, the limiting portion is connected to the support beam, the limiting portions on two adjacent support beams are arranged opposite to each other, and the limiting portions abut against the side surface of the roller;

[0010] The spacer protrusions are provided in each of the window holes. The two spacer protrusions are respectively located at the two limiting portions. The spacer protrusions separate the end faces of the two rollers.

[0011] Optionally, in an embodiment of the present invention, the spacing protrusion is hemispherical.

[0012] Optionally, in one embodiment of the present invention, the limiting portion includes a first limiting portion and a second limiting portion, the first limiting portion is longer than the second limiting portion, the first limiting portion is located in the middle of the support beam, and the spacing protrusion is located in the first limiting portion.

[0013] Optionally, in an embodiment of the present invention, the protrusion and the first limiting portion are ladder-shaped.

[0014] Optionally, in an embodiment of the present invention, the second limiting portion is symmetrically arranged on both sides of the first limiting portion.

[0015] Optionally, in an embodiment of the present invention, the second limiting portion has a guide inclined plate, and the side of the guide inclined plate close to the end ring is a high point, and the side close to the first limiting portion is a low point.

[0016] Optionally, in an embodiment of the present invention, the window hole is provided with an oil passage.

[0017] Optionally, in an embodiment of the present invention, the window hole is a rounded rectangle, and the oil passage is formed at the rounded corners.

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

[0019] To achieve the above-mentioned object, the present invention further provides a bearing comprising the separated double-roller bearing cage described above.

[0020] Compared to the prior art, the present invention achieves at least the following beneficial effects. In the present invention, the end rings and support beams form the basic framework of the retainer. The two end rings have the same diameter, and the retainer is a cylindrical roller retainer. The support beams connect the two end rings, forming a single-piece structure. Furthermore, multiple support beams are evenly spaced along the circumference of the end rings. Windows for accommodating rollers are formed between adjacent support beams, with two rollers positioned within each window along the length of the support beams. This dual-roller structure effectively distributes pressure when the bearing is under load, increasing the total load capacity of the rollers and thereby improving the overall bearing capacity. The windows contain raised portions and stoppers to limit the rollers' position and prevent them from moving during operation. Furthermore, to prevent interference between the two rollers within the same window, a spacer is provided. This spacer separates the two rollers within the same window, allowing them to rotate independently and stably during operation. This high stability reduces vibration and noise within the bearing, improving the smoothness of the bearing's operation. Separating rollers in the same row reduces the contact area between them, thereby lowering friction and wear, and improving bearing efficiency and life. Furthermore, the gaps between rollers provide better access for lubricant, ensuring even distribution across each roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a structural schematic diagram of an embodiment of a separated double roller bearing cage of the utility model;

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0025] Figure 4 for Figure 1 A partial enlarged view of point C in the middle.

[0026] Description of Figure Numbers:

[0027] 100, end ring; 200, support beam; 300, raised portion; 410, first limiting portion; 420, second limiting portion; 421, guide ramp; 430, inclined surface; 500, spaced raised portion; 600, reinforcement beam; 700, window hole; 710, oil passage;

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Reference Figures 1 to 4 The utility model provides a separated double roller bearing cage, comprising:

[0034] Two end rings 100 are provided, the two end rings 100 are spaced apart and arranged in parallel, and the axes of the two end rings 100 are collinear;

[0035] Support beam 200, with both ends of the support beam 200 fixedly connected to the two end rings 100 respectively. Multiple support beams 200 are evenly arranged along the circumference of the end ring 100, and window holes 700 are formed between two adjacent support beams 200. In the length direction of the support beam 200, each window hole 700 accommodates two rollers;

[0036] The raised portion 300 is connected to the end ring 100 . The raised portions 300 on the two end rings 100 are arranged opposite to each other, and the raised portions 300 abut against the end surface of the roller.

[0037] The limiting part is connected to the support beam 200, and the limiting parts on two adjacent support beams 200 are arranged opposite to each other, and the limiting parts abut the side surface of the roller;

[0038] The spacer protrusions 500 are provided in each window hole 700 . The two spacer protrusions 500 are respectively located at the two limiting portions. The spacer protrusions 500 separate the end faces of the two rollers.

[0039] The end rings 100 and support beams 200 form the basic framework (frame) of the retainer. The two end rings 100 have the same diameter, and the retainer is a cylindrical roller retainer. The support beams 200 connect the two end rings 100, forming a single-piece structure. Furthermore, multiple support beams 200 are evenly spaced along the circumference of the end rings 100. Window holes 700 for accommodating rollers are formed between adjacent support beams 200. Each window hole 700 houses two rollers along the length of the support beams 200. This dual-roller structure more effectively disperses pressure when the bearing is under load, increasing the total load that the rollers can carry, thereby improving the overall bearing capacity. The window holes 700 contain raised portions and limiters to limit the rollers and prevent them from shaking during operation. Furthermore, to prevent interference between the two rollers within the same window 700 during operation, a spacing protrusion 500 is provided. This spacing protrusion 500 separates the two rollers within the same window 700, allowing them to rotate independently and stably during operation. This high stability reduces vibration and noise within the bearing, improving the smoothness of the bearing's operation. Separating rollers in the same row reduces the contact area between them, thereby lowering the coefficient of friction and wear rate, and improving the bearing's operating efficiency and lifespan. Furthermore, the separation creates a gap between the rollers, providing a better path for lubricant, ensuring even distribution of the lubricant across each roller.

[0040] Specifically, the spacing protrusions 500 are preferably hemispherical in shape, which can reduce the contact area between the spacing protrusions 500 and the roller, thereby reducing friction between the spacing protrusions 500 and the roller. Furthermore, the hemispherical spacing protrusions 500 do not divide the window hole 700 into two completely independent spaces. The gap formed between the two hemispherical spacing protrusions 500 facilitates the flow of lubricating oil to lubricate the end surfaces of the roller. It is understood that in other embodiments, the spacing protrusions 500 can be configured as rectangular parallelepiped or cube-shaped structures.

[0041] Furthermore, because this cage is primarily used in high-load environments, not only does the rollers bear significant loads, but the cage formed by the end rings 100 and support beams 200 also needs to bear significant loads. To enhance the cage's structural strength and load-bearing capacity, a reinforcement beam 600 is provided. This reinforcement beam 600 is connected to the support beam 200 and located on the side of the support beam 200 closest to the axis of the end rings 100. The high-strength support beam 200 (or cage) helps distribute the roller load more evenly in high-load environments, preventing damage to the cage due to excessive localized pressure and ensuring stable bearing operation.

[0042] Furthermore, the limiting portion includes a first limiting portion 410 and a second limiting portion 420, wherein the first limiting portion 410 is longer than the second limiting portion 420. The first limiting portion 410 is located in the middle of the support beam 200, and the second limiting portions 420 are located on either side of the first limiting portion 410. The first limiting portion 410 and the second limiting portion 420 function to limit the roller on both sides, ensuring that the roller is always located in the center of the window hole 700 during operation. The first limiting portion 410 simultaneously limits both rollers in the same window hole 700, while the second limiting portion 410 only limits one roller.

[0043] The raised portion 300 is used to limit the roller's position in its axial direction. Specifically, the first limiting portion 410 and the raised portion 300 form a ladder structure. After the ladder structure limits the roller's position, a gap exists between the roller and the ladder structure, facilitating the flow of lubricating oil. This creates an oil film between the roller and the raised portion 300, and between the roller and the first limiting portion 410, reducing heat generation during roller rotation.

[0044] Furthermore, due to the small gap between the roller and the first stopper 410, the roller may squeeze the lubricating oil between it and the first stopper 410 during rotation, resulting in increased friction between the two. The inclined surface 430 of the ladder body can reduce this problem. The inclined surface 430 extends from the inner wall of the window hole 700 toward the side of the roller. The inclined surface 430 can guide the lubricating oil to a certain extent as it flows, allowing it to flow into the gap between the roller and the first stopper 410, ensuring that there is sufficient lubricating oil in the gap. It is understood that the same situation exists between the raised portion 300 and the roller, and the inclined surface 430 of the raised portion 300 can also reduce this problem.

[0045] It is understandable that the guide inclined plate 421 provided on the second limiting portion 420 plays the same guiding role as the inclined surface 430 , so that there is a sufficient amount of lubricating oil between the roller and the second limiting portion 420 .

[0046] To provide a path for the lubricating oil to flow through the retainer, the window 700 defines an oil passage 710. In a preferred embodiment, the window 700 is a rounded rectangular shape, with the four corners of the window 700 rounded. This rounded corner treatment provides a flow path for the lubricating oil, and the rounded corners are smoother, eliminating any obstruction to the flow of the lubricating oil and improving its flow rate.

[0047] The present invention also proposes a bearing, which includes a retaining frame as described above. Specifically, the specific structure of the retaining frame refers to the above embodiment. Since the bearing adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described one by one here.

[0048] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, within the inventive concept of the present invention, are included in the patent protection scope of the present invention.

Claims

1. A separated double roller bearing cage, characterized in that: include: End rings, wherein two end rings are provided, the two end rings are spaced apart and arranged in parallel, and the axes of the two end rings are collinear; A support beam, wherein both ends of the support beam are fixedly connected to the two end rings respectively, a plurality of the support beams are evenly arranged along the circumference of the end ring, a window hole is formed between two adjacent support beams, and each window hole accommodates two rollers in the length direction of the support beam; A raised portion, the raised portion being connected to the end ring, the raised portions on the two end rings being arranged opposite to each other, and the raised portions abutting against the end surface of the roller; A limiting portion, the limiting portion is connected to the support beam, the limiting portions on two adjacent support beams are arranged opposite to each other, and the limiting portions abut against the side surface of the roller; The spacer protrusions are provided in each of the window holes. The two spacer protrusions are respectively located at the two limiting portions. The spacer protrusions separate the end faces of the two rollers.

2. The split double roller bearing cage according to claim 1, characterized in that: The spacing protrusion is hemispherical.

3. The split double roller bearing cage according to claim 1, wherein: The limiting portion includes a first limiting portion and a second limiting portion, the first limiting portion is longer than the second limiting portion, the first limiting portion is located in the middle of the support beam, and the spacing protrusion is located in the first limiting portion.

4. The split double roller bearing cage according to claim 3, wherein: The protruding portion and the first limiting portion are ladder-shaped.

5. The split double roller bearing cage according to claim 3, wherein: The second limiting portion is symmetrically arranged on both sides of the first limiting portion.

6. The split double roller bearing cage according to claim 3, wherein: The second limiting portion has a guide inclined plate, and the side of the guide inclined plate close to the end ring is a high point, and the side close to the first limiting portion is a low point.

7. The split double roller bearing cage according to claim 1, wherein: The window hole is provided with an oil passage.

8. The split double roller bearing cage according to claim 7, wherein: The window hole is a rounded rectangle, and the oil passage is formed at the rounded corners.

9. The split double roller bearing cage according to claim 1, wherein: It also includes a reinforcing beam, which is connected to the supporting beam and is located on a side of the supporting beam close to the axis of the end ring.

10. A bearing, characterized in that: The invention comprises a separated double roller bearing cage according to any one of claims 1 to 9.

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