Bearing retainer for heavy load and bearing

Abstract

The utility model discloses a bearing retainer for heavy load and a bearing. Belongs to the field of bearing retainers. The bearing retainer comprises a retainer body, the retainer body is provided with a plurality of window holes, the window holes are evenly distributed in the circumferential direction of the retainer body, and two rollers are contained in each window hole in the axial direction; the top wall and the bottom wall of each window hole are both provided with the abutting parts, and the two abutting parts in each window hole make contact with the end faces of the two rollers correspondingly; the side wall of each window hole is provided with the corresponding protruding part, and the protruding parts make contact with the side faces of the rollers. The double-roller bearing solves the technical problem that friction between a roller and a retainer in an existing double-roller bearing is large.

Description

Technical Field

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

[0002] Currently, the roller bearings available on the market include single-row roller bearings and double-row roller bearings. Among them, the load capacity of single-row roller bearings is relatively low.

[0003] 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 increasingly higher. Compared with single-row roller bearings, double-row roller bearings have higher load capacity, but double-row roller bearings are prone to the problem of large friction between the rollers and the cage. Therefore, a heavy-duty bearing cage is proposed to reduce the friction between the rollers and the cage. Utility Model Content

[0004] The main purpose of the utility model is to provide a heavy-load bearing retainer, aiming to improve the load-bearing capacity of the roller bearing.

[0005] To achieve the above-mentioned purpose, the heavy-duty bearing retainer proposed in the present invention comprises:

[0006] A frame body, wherein the frame body is provided with a plurality of window holes, the plurality of window holes are evenly arranged along the circumferential direction of the frame body, and in the axial direction, each of the window holes accommodates two rollers;

[0007] Abutment portions, wherein the top wall and the bottom wall of each window hole have abutment portions, and the two abutment portions in each window hole respectively contact the end surfaces of the two rollers;

[0008] A raised portion is provided on the side wall of each window hole, and the raised portion contacts the side surface of the roller.

[0009] Optionally, in an embodiment of the present invention, the window hole is a rounded rectangle, and the abutting portion is located in the middle of the top wall and the bottom wall respectively.

[0010] Optionally, in an embodiment of the present invention, the abutting portion is a ladder.

[0011] Optionally, in one embodiment of the present invention, the raised portion includes a first raised portion and a second raised portion, the first raised portion is longer than the second raised portion, the first raised portion is located in the middle of the side wall, and the second raised portion is symmetrically distributed on both sides of the first raised portion.

[0012] Optionally, in an embodiment of the present invention, two first protrusions are provided, and the two first protrusions are symmetrically arranged on the side wall, and four second protrusions are provided and symmetrically arranged on the side wall.

[0013] Optionally, in an embodiment of the present invention, the first raised portion is a ladder, and the second raised portion has a guide bevel, and the guide bevel is located on a side of the second raised portion close to the first raised portion.

[0014] Optionally, in an embodiment of the present invention, the window hole is adapted for a cylindrical roller bearing.

[0015] To achieve the above objectives, the present invention further provides a bearing comprising the heavy-load bearing retainer described above.

[0016] Compared with the prior art, the present invention can at least achieve the following beneficial effects. The frame in the technical solution of the present invention is provided with a plurality of window holes, which are evenly arranged along the circumference of the frame, and two rollers are arranged in each window hole. Rollers are the main components for bearing loads in bearings. In application environments such as heavy-duty vehicles, since the bearings in this environment need to bear a larger load, double-roller bearings are usually selected. The double-roller structure can more effectively disperse the pressure when the bearing is under load, reduce the load borne by each roller, and thus improve the overall load-bearing capacity of the bearing. Abutment portions and raised portions are provided in the window holes, wherein the abutment portions contact the end face of the roller, and the raised portions contact the side face of the roller. Since the volume of the window hole is usually larger than the volume of the roller, the design of the raised portion and the abutment portions helps to better lock the roller, preventing the roller from unnecessary movement or falling off in the window hole, thereby ensuring the stable operation of the bearing. Under high load conditions, the friction between the rollers and the frame increases significantly, which not only causes the bearing temperature to rise, but also accelerates bearing wear. The introduction of lubricating oil can form an oil film on the surface of the rollers, isolating them from direct contact with the frame, reducing the friction coefficient and delaying wear. The design of the abutment and raised portion can change the flow path of the lubricating oil within the window hole, helping to distribute the lubricating oil more evenly between the rollers and the window hole, forming an effective lubricating oil film. By improving the lubrication conditions and the locking effect of the rollers, the bearing's load-bearing capacity can be indirectly improved. In addition, the abutment and raised portion can also improve the structural strength of the frame, further improving the bearing's load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 This is a structural diagram of a heavy-duty bearing retainer of the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0020] Figure 3 for Figure 1 A partial enlarged view of point B in the middle.

[0021] Description of Figure Numbers:

[0022] 100, frame; 110, window hole; 200, abutment portion; 310, first protrusion; 320, second protrusion; 321, guide bevel;

[0023] 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

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Reference Figures 1 to 3 The utility model provides a heavy-duty bearing retainer, comprising:

[0029] The frame 100 is provided with a plurality of windows 110 , which are evenly arranged along the circumference of the frame 100 . In the axial direction, each window 110 accommodates two rollers.

[0030] Abutment portions 200 , the top and bottom walls of each window hole 110 have abutment portions 200 , and the two abutment portions 200 in each window hole 110 respectively contact the end surfaces of the two rollers;

[0031] A protrusion is provided on the side wall of each window hole 110 , and the protrusion contacts the side surface of the roller.

[0032] The frame 100 of the present invention is provided with a plurality of windows 110, evenly spaced along the circumference of the frame 100. Each window 110 houses two rollers. Rollers are the primary load-bearing components of bearings. In applications such as heavy-duty vehicles, where bearings must carry heavy loads, dual-roller bearings are often used. This dual-roller structure effectively distributes pressure when the bearing is under load, reducing the load borne by each roller and thereby improving the overall load-bearing capacity of the bearing. Abutments 200 and raised portions are provided within the windows 110. The abutments 200 contact the end faces of the rollers, while the raised portions contact the sides of the rollers. To facilitate assembly, the volume of the windows 110 is larger than that of the rollers. The design of the raised portions and abutments 200 helps to better lock the rollers in place, preventing them from moving or falling out of the windows 110 and ensuring stable operation of the bearing. Under high load conditions, the friction between the roller and the frame 100 will increase significantly, which will not only cause the bearing temperature to rise, but also accelerate the wear of the bearing. The intervention of lubricating oil can form an oil film on the surface of the roller, isolating the direct contact between the roller and the frame 100, reducing the friction coefficient and delaying wear. The design of the abutment 200 and the protrusion can change the flow path of the lubricating oil in the window hole 110, which helps to distribute the lubricating oil more evenly between the roller and the window hole 110, forming an effective lubricating oil film. By improving the lubrication conditions and the locking effect of the roller, the bearing's load-bearing capacity can be indirectly improved. In addition, the abutment 200 and the protrusion can also improve the structural strength of the frame 100, further improving the bearing's load-bearing capacity and enabling it to work better in heavy-load environments.

[0033] Furthermore, the window hole 110 is shaped like a rounded rectangle, and the abutment portion 200 is located in the middle of the side wall of the window hole 110. The raised portion is located on the side wall of the window hole 110. After the roller is installed, the raised portion limits the roller on both sides. The abutment portion 200 is located in the middle of the top and bottom walls so that the abutment portion contacts the axis of the roller, ensuring the roller is stable during rolling.

[0034] Specifically, the abutment portion 200 has a ladder structure. The ladder structure will be described using the bottom wall of the window hole 110 as an example, with the top wall being identical to the bottom wall. The upper top surface of the ladder (the surface formed by the shorter sides) provides surface support for the roller's end face. Compared to point support, surface support can better ensure the stability of the roller during rotation. Furthermore, the lower bottom surface of the ladder (the surface formed by the longer sides) is connected to the bottom wall of the window hole 110, and the lower bottom surface does not extend to the rounded corner of the window hole 110. When the roller is installed on the abutment portion 200, neither the roller nor the abutment portion 200 blocks the gap in the rounded corner. Lubricating oil can flow through the gap formed between the rounded corner, the abutment portion 200, and the roller to the roller and the frame 100, producing a lubricating effect. Furthermore, the side surface of the ladder (the surface formed by the waist) can direct fluid toward the abutment between the roller and the frame 100, ensuring an oil film is formed between the roller's end face and the upper top surface of the ladder.

[0035] Furthermore, the raised portion includes a first raised portion 310 and a second raised portion 320. The first raised portion 310 is longer than the second raised portion 320. The first raised portion 310 is located in the middle of the side wall, and the second raised portions 320 are symmetrically distributed on both sides of the first raised portion 310. The first raised portion 310 simultaneously limits the two rollers, while the second raised portion 320 limits the two rollers separately.

[0036] Specifically, the first protrusion 310 is a ladder, and the second protrusion 320 has a diverter bevel 321. In each window hole 110, there are two first protrusions 310, which are symmetrically arranged on the two side walls, and four second protrusions 320, which are also symmetrically arranged on the two side walls.

[0037] The top surface of the first protrusion 310 provides support for the roller's side surface. After the roller is installed, a through-structure is formed between the roller's side surface, the first protrusion 310, and the second protrusion 320, allowing lubricating oil to pass through. Similarly, the beveled edges 321 on the side of the first protrusion 310 and the second protrusion 320 also guide the lubricating oil, allowing it to flow between the roller's side surface and the protrusions, forming an oil film to reduce friction.

[0038] In addition, the present invention also provides a bearing including the retaining frame described above. Since the bearing adopts all the technical solutions of the retaining frame described above, it also has all the beneficial effects described above, which will not be described in detail here.

[0039] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heavy-duty bearing retainer, characterized in that: include: A frame body, wherein the frame body is provided with a plurality of window holes, the plurality of window holes are evenly arranged along the circumferential direction of the frame body, and in the axial direction, each of the window holes accommodates two rollers; Abutment portions, wherein the top wall and the bottom wall of each window hole have abutment portions, and the two abutment portions in each window hole respectively contact the end surfaces of the two rollers; A raised portion is provided on the side wall of each window hole, and the raised portion contacts the side surface of the roller.

2. The heavy-duty bearing retainer according to claim 1, wherein: The window hole is a rounded rectangle, and the abutting portion is located in the middle of the top wall and the bottom wall respectively.

3. The heavy-duty bearing retainer according to claim 2, wherein: The abutting portion is a ladder.

4. The heavy-duty bearing retainer according to claim 1, wherein: The raised portion includes a first raised portion and a second raised portion, the first raised portion is longer than the second raised portion, the first raised portion is located in the middle of the side wall, and the second raised portions are symmetrically distributed on both sides of the first raised portion.

5. The heavy-duty bearing retainer according to claim 4, wherein: There are two first protrusions provided, and the two first protrusions are symmetrically arranged on the side wall. There are four second protrusions provided, and the two second protrusions are symmetrically arranged on the side wall.

6. The heavy-duty bearing retainer according to claim 5, wherein: The first protrusion is a ladder-shaped body, and the second protrusion has a flow-guiding bevel. The flow-guiding bevel is located on a side of the second protrusion close to the first protrusion.

7. The heavy-duty bearing retainer according to claim 1, wherein: The window hole is adapted for a cylindrical roller bearing.

8. A bearing, characterized in that: The heavy-load bearing retainer comprises the heavy-load bearing retainer according to any one of claims 1 to 7.

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