High-load-bearing type tapered roller bearing

Abstract

The utility model relates to the field of bearings, and discloses a high-load-bearing tapered roller bearing which comprises an outer ring and an inner ring, the inner ring is arranged on the inner side of the outer ring, roller structures are arranged between the outer ring and the inner ring in an up-down arrangement mode, a rotation protection structure is arranged at the position, close to the lower portion of the center, between the outer ring and the inner ring, and a protection layer is arranged on the inner side wall of the inner ring. Compared with a traditional single-layer roller structure, the double-layer roller bearing has the advantages that the double-layer roller structure, namely the first roller and the second roller, is arranged up and down and is inclined, so that the double-layer roller bearing can bear loads from different directions and sizes more uniformly, and the bearing capacity of the bearing is remarkably improved; according to the design, the limitation of a traditional bearing in the aspect of bearing performance is broken through, the protection coating is made of a polytetrafluoroethylene material, the effects of protection and friction reduction can be achieved when the ball rotates, the friction coefficient between the ball and other parts is reduced, energy loss is reduced, and the working efficiency of the whole bearing is improved.

Description

Technical Field

[0001] The utility model relates to the field of bearings, in particular to a high-load-bearing tapered roller bearing. Background Art

[0002] High-load capacity tapered roller bearings are a type of bearing specially designed to withstand heavy loads and impact loads. They are usually used in heavy machinery, mining equipment, rolling mills, large fans, ship propulsion systems and other applications. They involve aspects such as bearing design, material selection, manufacturing process, and lubrication and sealing technology.

[0003] When existing high-load-bearing tapered roller bearings are subjected to heavy loads, stress concentration is prone to occur in the rollers, resulting in a shortened bearing life. Due to the limitations of the roller structure, the load distribution is often uneven, which may cause local premature wear of the bearing. The friction coefficient between the ball and the inner ring of the bearing is relatively high, which will increase energy loss and reduce the working efficiency of the bearing. Therefore, technical personnel in this field provide a high-load-bearing tapered roller bearing to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a high-load-bearing tapered roller bearing is proposed. By adopting a two-layer roller structure arranged up and down, namely a first roller and a second roller, and both are inclined, compared with the traditional single-layer roller structure, it can more evenly bear loads from different directions and sizes, and significantly improves the bearing capacity of the bearing. This design breaks through the limitations of traditional bearings in terms of load-bearing performance. The protective coating is made of polytetrafluoroethylene material, which can protect and reduce friction when the ball rotates, reduce the friction coefficient between the ball and other components, reduce energy loss, and improve the working efficiency of the entire bearing. Stainless steel material is used as the protective layer of the inner side wall of the inner ring, which fully utilizes the good corrosion resistance, hardness and strength of stainless steel, can effectively resist corrosive media and mechanical damage in the external environment, and greatly extends the service life of the bearing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-load-bearing tapered roller bearing, comprising an outer ring and an inner ring, the inner ring is arranged inside the outer ring, a roller structure arranged up and down is arranged between the outer ring and the inner ring, a rotation protection structure is arranged at the lower center between the outer ring and the inner ring, a protection layer is arranged on the inner side wall of the inner ring, a sealing cover is arranged at the upper center and the lower center between the outer ring and the inner ring, and a plurality of rubber pads are arranged up and down on the inner side wall of the protection layer in an annular shape;

[0006] Through the above technical scheme, by adopting a two-layer roller structure arranged up and down, namely the first roller and the second roller, and both are inclined, compared with the traditional single-layer roller structure, it can bear loads from different directions and sizes more evenly, and significantly improve the bearing capacity of the bearing. This design breaks through the limitations of traditional bearings in terms of load-bearing performance. The protective coating is made of polytetrafluoroethylene material, which can play a role in protecting and reducing friction when the ball rotates, reduce the friction coefficient between the ball and other components, reduce energy loss, and improve the working efficiency of the entire bearing. The stainless steel material is used as the protective layer of the inner wall of the inner ring, which fully utilizes the good corrosion resistance, hardness and strength of stainless steel, can effectively resist corrosive media and mechanical damage in the external environment, and greatly extend the service life of the bearing.

[0007] Further, the roller structure comprises a plurality of first rollers, a first retainer, a second retainer and a plurality of second rollers, the first retainer is arranged at the center between the outer ring and the inner ring, the plurality of first rollers are arranged in a ring shape at the center of the outer side wall of the first roller, the second retainer is arranged at the lower center between the outer ring and the inner ring, and the plurality of second rollers are arranged in a ring shape at the center of the outer side wall of the second retainer;

[0008] Through the above technical solution, when the outer ring rotates relative to the inner ring, the first roller and the second roller roll under the constraints of the first retaining frame and the second retaining frame respectively, thereby realizing relative rotation support between the outer ring and the inner ring. By setting up an upper and lower two-layer roller structure, namely the first roller and the second roller, it is possible to more evenly bear loads from different directions and sizes, thereby improving the bearing capacity of the bearing. The existence of the first retaining frame and the second retaining frame enables the first roller and the second roller to maintain a stable position and relative movement, thereby preventing collision and interference between the first roller and the second roller, thereby ensuring the stability and accuracy of the bearing operation.

[0009] Further, the rotation protection structure includes a third cage, a plurality of balls and a plurality of protective coatings, the third cage is arranged at the lower center between the outer ring and the inner ring, the plurality of balls are arranged in a ring shape at the center of the outer side wall of the third cage, and the protective coatings are respectively sleeved on the outer side walls of the plurality of balls;

[0010] Through the above technical solution, when the outer ring rotates relative to the inner ring, the ball rolls under the constraint of the third retaining frame, thereby assisting the relative rotation of the outer ring and the inner ring. At the same time, the protective coating is tightly mounted on the outer wall of the ball, which plays a role in protecting and reducing friction when the ball contacts other components, ensuring the stability of the position of the ball, avoiding confusion and collision of the ball during rotation, thereby improving the smoothness and accuracy of rotation, reducing the friction coefficient between the ball and other components, reducing energy loss, and improving the working efficiency of the entire bearing.

[0011] Furthermore, the plurality of first rollers and the plurality of second rollers are all arranged obliquely;

[0012] Through the above technical solution, when the first roller and the second roller are subjected to load, the load can be decomposed into axial and radial components, so that the contact stress distribution between the first roller, the second roller and the raceway is more uniform.

[0013] Further, the plurality of the first rollers and the plurality of the second rollers are rotatably connected inside the first retaining frame and the second retaining frame respectively;

[0014] Through the above technical solution, the smoothness and consistency of the rotation of the first roller and the second roller are ensured, the mutual collision and jamming between the first roller and the second roller are avoided, and the operation accuracy and efficiency of the bearing are improved.

[0015] Furthermore, the protective coating material is polytetrafluoroethylene;

[0016] Through the above technical solution, polytetrafluoroethylene has an extremely low friction coefficient and good self-lubricating properties, and the protective coating can reduce friction and wear when the ball contacts other parts.

[0017] Furthermore, the protective layer is made of stainless steel;

[0018] Through the above technical solution, the stainless steel has good corrosion resistance, hardness and strength, and can effectively resist corrosive media and mechanical damage in the external environment.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, the high-load-bearing tapered roller bearing adopts a two-layer roller structure arranged up and down, namely the first roller and the second roller, and both are inclined. Compared with the traditional single-layer roller structure, it can more evenly bear loads from different directions and sizes, and significantly improves the bearing capacity. This design breaks through the limitations of traditional bearings in terms of load-bearing performance.

[0021] 2. In the utility model, the protective coating is made of polytetrafluoroethylene material, which can play a role in protection and friction reduction when the ball rotates, reduce the friction coefficient between the ball and other components, reduce energy loss, and improve the working efficiency of the entire bearing.

[0022] 3. In the utility model, stainless steel is used as the protective layer of the inner wall of the inner ring, which fully utilizes the good corrosion resistance, hardness and strength of stainless steel, can effectively resist corrosive media and mechanical damage in the external environment, and greatly prolongs the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a high-load-bearing tapered roller bearing proposed by the utility model;

[0024] Figure 2 This is a front plan view of a high-load-bearing tapered roller bearing proposed by the utility model;

[0025] Figure 3 This is a front cross-sectional view of a high-load-bearing tapered roller bearing proposed by the utility model;

[0026] Figure 4 for Figure 2 A magnified schematic diagram of center A.

[0027] Legend:

[0028] 1. Outer ring; 2. Inner ring; 3. Roller structure; 301. First roller; 302. First retaining frame; 303. Second retaining frame; 304. Second roller; 4. Rotation protection structure; 401. Third retaining frame; 402. Ball; 403. Protective coating; 5. Sealing cover; 6. Protective layer; 7. Rubber pad. DETAILED DESCRIPTION

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

[0030] Reference Figure 1-4 The utility model provides an embodiment: a high-load-bearing tapered roller bearing, including an outer ring 1 and an inner ring 2, the inner ring 2 is arranged on the inner side of the outer ring 1, a roller structure 3 is arranged up and down between the outer ring 1 and the inner ring 2, a rotating protective structure 4 is arranged at the lower center between the outer ring 1 and the inner ring 2, a protective layer 6 is arranged on the inner side wall of the inner ring 2, a sealing cover 5 is arranged at the upper center and the lower center between the outer ring 1 and the inner ring 2, and a plurality of rubber pads 7 are arranged up and down in an annular shape on the inner side wall of the protective layer 6, the outer ring 1 and the inner ring 2 are used as the main supporting structures, and the upper and lower parts are provided with a rotating protective structure 4, a protective layer 6 is arranged on the inner side wall of the inner ring 2, and a plurality of rubber pads 7 are arranged up and down in an annular shape on the inner side wall of the protective layer 6. When the outer ring 1 and the inner ring 2 rotate relative to each other, the arranged roller structure 3 reduces friction and bears load by rolling, and assists the rotation and provides certain protection by rotating the protective structure 4. The protective layer 6 plays a protective and reinforcing role. The upper and lower sealing covers 5 prevent dust, impurities, etc. from entering the interior of the bearing, and the multiple rubber pads 7 on the inner wall of the protective layer 6 can provide buffering and shock absorption in some cases. The protective layer 6 is made of stainless steel. Stainless steel has good corrosion resistance, hardness and strength, and can effectively resist corrosive media and mechanical damage in the external environment.

[0031] The roller structure 3 includes a plurality of first rollers 301, a first retaining frame 302, a second retaining frame 303 and a plurality of second rollers 304. The first retaining frame 302 is arranged at the center between the outer ring 1 and the inner ring 2. The plurality of first rollers 301 are arranged in a ring shape at the center of the outer wall of the first roller 301. The second retaining frame 303 is arranged at the lower center between the outer ring 1 and the inner ring 2. The plurality of second rollers 304 are arranged in a ring shape at the center of the outer wall of the second retaining frame 303.

[0032] When the outer ring 1 rotates relative to the inner ring 2, the first roller 301 and the second roller 304 roll under the constraints of the first retaining frame 302 and the second retaining frame 303 respectively, so as to realize the relative rotation support between the outer ring 1 and the inner ring 2. By setting the upper and lower layers of the roller structure 3, namely the first roller 301 and the second roller 304, it is possible to more evenly bear loads from different directions and sizes, thereby improving the bearing capacity of the bearing. The existence of the first retaining frame 302 and the second retaining frame 303 enables the first roller 301 and the second roller 304 to maintain a stable position and relative movement, thereby preventing collision and interference between the first roller 301 and the second roller 304, and ensuring the stable operation of the bearing. In terms of quality and accuracy, the multiple first rollers 301 and the multiple second rollers 304 are all inclined. When the first rollers 301 and the second rollers 304 are subjected to loads, the loads can be decomposed into axial and radial components, so that the contact stress distribution between the first rollers 301, the second rollers 304 and the raceway is more uniform. The multiple first rollers 301 and the multiple second rollers 304 are rotatably connected to the inside of the first retaining frame 302 and the second retaining frame 303 respectively, which ensures the smoothness and consistency of the rotation of the first rollers 301 and the second rollers 304, avoids mutual collision and jamming between the first rollers 301 and the second rollers 304, and improves the operation accuracy and efficiency of the bearing.

[0033] The rotation protection structure 4 includes a third retainer 401, a plurality of balls 402 and a plurality of protective coatings 403. The third retainer 401 is arranged at the lower center between the outer ring 1 and the inner ring 2. The plurality of balls 402 are arranged in a ring shape at the center of the outer wall of the third retainer 401. The protective coatings 403 are respectively sleeved on the outer walls of the plurality of balls 402. When the outer ring 1 rotates relative to the inner ring 2, the balls 402 roll under the constraint of the third retainer 401, thereby assisting the relative rotation of the outer ring 1 and the inner ring 2. At the same time, the protective coating 403 is tightly sleeved on the outer wall of the balls 402. When the ball 402 contacts other parts, it plays a role of protection and friction reduction, ensures the stable position of the ball 402, avoids confusion and collision of the ball 402 during rotation, thereby improving the smoothness and accuracy of rotation, and can reduce the friction coefficient between the ball 402 and other parts, reduce energy loss, and improve the working efficiency of the entire bearing. The material of multiple protective coatings 403 is polytetrafluoroethylene, which has an extremely low friction coefficient and good self-lubricating properties. When the ball 402 contacts other parts, the protective coating 403 can reduce friction and wear.

[0034] Working principle: The outer ring 1 and the inner ring 2 serve as the main supporting structure. The roller structures 3 arranged up and down rotate relative to each other. When the outer ring 1 rotates relative to the inner ring 2, the first roller 301 and the second roller 304 roll under the constraints of the first retaining frame 302 and the second retaining frame 303 respectively, thereby realizing the relative rotation support between the outer ring 1 and the inner ring 2. By setting up the upper and lower layers of the roller structure 3, namely the first roller 301 and the second roller 304, it is possible to more evenly bear loads from different directions and sizes, thereby improving the bearing capacity of the bearing. The existence of the first retaining frame 302 and the second retaining frame 303 enables the first roller 301 and the second roller 304 to maintain a stable position and relative movement, thereby preventing collision and interference between the first roller 301 and the second roller 304, thereby ensuring the stability and accuracy of the bearing operation.

[0035] When the outer ring 1 rotates relative to the inner ring 2, the ball 402 rolls under the constraint of the third retaining frame 401, thereby assisting the relative rotation of the outer ring 1 and the inner ring 2. At the same time, the protective coating 403 is tightly mounted on the outer wall of the ball 402, and plays a role in protecting and reducing friction when the ball 402 contacts other components, ensuring the stability of the position of the ball 402, and avoiding confusion and collision of the ball 402 during rotation, thereby improving the smoothness and accuracy of rotation, and can reduce the friction coefficient between the ball 402 and other components, reduce energy loss, and improve the working efficiency of the entire bearing. The protective layer 6 plays a protective and reinforcing role. The upper and lower sealing covers 5 prevent dust, impurities, etc. from entering the interior of the bearing, and the multiple rubber pads 7 on the inner wall of the protective layer 6 can provide buffering and shock absorption in some cases.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-load-bearing tapered roller bearing, comprising an outer ring (1) and an inner ring (2), wherein the inner ring (2) is arranged inside the outer ring (1), and characterized in that: A roller structure (3) is arranged vertically between the outer ring (1) and the inner ring (2); a rotation protection structure (4) is provided at the lower center between the outer ring (1) and the inner ring (2); a protection layer (6) is provided on the inner side wall of the inner ring (2); a sealing cover (5) is provided at the upper center and the lower center between the outer ring (1) and the inner ring (2); and a plurality of rubber pads (7) are arranged vertically in a ring-shaped manner on the inner side wall of the protection layer (6).

2. A high load-bearing tapered roller bearing according to claim 1, characterized in that: The roller structure (3) comprises a plurality of first rollers (301), a first retaining frame (302), a second retaining frame (303) and a plurality of second rollers (304), wherein the first retaining frame (302) is arranged at the center between the outer ring (1) and the inner ring (2), the plurality of first rollers (301) are arranged in a ring-shaped manner at the center of the outer wall of the first roller (301), the second retaining frame (303) is arranged at the lower center between the outer ring (1) and the inner ring (2), and the plurality of second rollers (304) are arranged in a ring-shaped manner at the center of the outer wall of the second retaining frame (303).

3. A high load-bearing tapered roller bearing according to claim 1, characterized in that: The rotation protection structure (4) comprises a third retaining frame (401), a plurality of balls (402) and a plurality of protective coatings (403); the third retaining frame (401) is arranged at the lower center between the outer ring (1) and the inner ring (2); the plurality of balls (402) are arranged in a ring-shaped manner at the center of the outer wall of the third retaining frame (401); and the protective coatings (403) are respectively sleeved on the outer walls of the plurality of balls (402).

4. A high load-bearing tapered roller bearing according to claim 2, characterized in that: The plurality of first rollers (301) and the plurality of second rollers (304) are all arranged at an inclination.

5. A high load-bearing tapered roller bearing according to claim 2, characterized in that: The plurality of first rollers (301) and the plurality of second rollers (304) are rotatably connected inside the first retaining frame (302) and the second retaining frame (303) respectively.

6. A high load-bearing tapered roller bearing according to claim 3, characterized in that: The material of the plurality of protective coatings (403) is polytetrafluoroethylene.

7. The high load-bearing tapered roller bearing according to claim 1, characterized in that: The material of the protective layer (6) is stainless steel.

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