CN217301293U

CN217301293U - Self-aligning roller bearing for gear box

Info

Publication number: CN217301293U
Application number: CN202121164184.7U
Authority: CN
Inventors: 温泉; 刘春雨; 于水; 宋廷宇; 陶治; 岳超
Original assignee: Dalian Metallurgy and Bearings Co Ltd
Current assignee: Dalian Metallurgy and Bearings Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-08-26
Anticipated expiration: 2031-05-28

Abstract

The utility model belongs to the technical field of bearing processing, concretely relates to aligning roller bearing for gear box, which comprises an inner ring, an outer ring, a retainer and rollers, wherein the inner wall of the outer ring is arranged as a first spherical raceway, two symmetrical second spherical raceways are obliquely arranged on the outer wall of the inner ring, the rollers are arranged between the two second spherical raceways and the first spherical raceway, and the retainer is arranged between the two rows of rollers; the two rows of rollers are symmetrically arranged, rolling surfaces of the rollers are of spherical structures, the rollers are arranged in a hollow mode, and a through hollow hole is formed in the center of the roller body. The roller adopts a hollow roller structure, so that the weight of the roller is reduced, the centrifugal force action of the roller at a high rotating speed is reduced, meanwhile, the full lubrication is facilitated, and the rotating speed capability of the bearing is improved.

Description

Self-aligning roller bearing for gear box

Technical Field

The utility model belongs to the technical field of bearing processing, concretely relates to aligning roller bearing for gear box.

Background

The gearbox is usually in severe operating environments such as heavy load, impact load, high rotating speed, high temperature or high pollution, and continuously works, and the requirements on the bearing are more strict. Due to the structural characteristics of the traditional self-aligning roller bearing, when the bearing runs at a high speed, the bearing generates heat, the roller at the non-stressed end cannot be guided and positioned in the roller path in the rotating process, the situations of roller deflection, slipping, retainer impact and the like can be shown, the retainer can be broken in severe conditions, and the bearing fails in advance.

Disclosure of Invention

Based on the defect that above-mentioned prior art exists, the utility model aims at providing a novel self-aligning roller bearing for gear box through optimizing holder and spherical roller design, under the good lubricating system of existing equipment, improves the lubricating property of bearing self, reduces the bearing and heaies up, improves bearing rotational speed ability.

In order to achieve the above object, the utility model adopts the following technical scheme: a self-aligning roller bearing for a gear box comprises an inner ring, an outer ring, a retainer and rollers, wherein the inner wall of the outer ring is provided with a first spherical raceway, two sides of the outer wall of the inner ring are obliquely provided with symmetrical second spherical raceways, the rollers are arranged between the two second spherical raceways and the first spherical raceway, and the retainer is arranged between the two rows of rollers; the two rows of rollers are symmetrically arranged, rolling surfaces of the rollers are of spherical structures, the rollers are arranged in a hollow mode, and a through hollow hole is formed in the center of the roller body.

Furthermore, a large flange matched with the roller is arranged on the outer wall of the inner ring, the large flange is arranged at the position with the largest thickness of the inner ring, and the large flange is an arc-shaped flange.

Furthermore, the end face of the roller is a large sphere base face, and the large sphere base face of the end face of the roller is tangent to the arc-shaped face of the large flange.

Furthermore, an oil storage tank is arranged at the joint of the inner ring and the large flange.

Furthermore, a small flange matched with the roller is arranged on the outer wall of the inner ring, the small flange is arranged at the position where the thickness of the inner ring is minimum, and the small flange is in clearance fit with the roller.

Furthermore, an oil storage tank is arranged at the joint of the inner ring and the small flange.

Furthermore, the retainer is of a split type, the two retainers are symmetrically arranged, and each retainer is provided with a row of rollers.

Furthermore, a plurality of lubricating grooves are uniformly arranged on the inner diameter of each retainer.

Further, the diameter Dw =0.3 × Dw of the hollow bore, Dw being the roller diameter.

Further, outer groove has been seted up along the annular on the outer lane, outer groove intercommunication oil filler point, and the oil filler point extends to the outer lane inner wall.

The utility model has the advantages that: the roller adopts a hollow roller structure, so that the weight of the roller is reduced, the centrifugal force action of the roller at a high rotating speed is reduced, meanwhile, the full lubrication is facilitated, and the rotating speed capability of the bearing is improved.

Drawings

FIG. 1 is a schematic structural view of a self-aligning roller bearing;

FIG. 2 is a schematic view of the cage construction;

FIG. 3 is a sectional view of the cage structure;

FIG. 4 is an enlarged view of a hollow roller;

in the figure: 1. the oil lubrication structure comprises an outer ring, 2, an inner ring, 3, rollers, 4, a retainer, 5, a lubrication groove, 6, a hollow hole, 7, a large flange, 8, an oil storage groove, 9, a small flange, 10, an outer groove, 11 and an oil injection hole.

Detailed Description

In order to make the structure and function of the present invention clearer, the drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solution in the embodiments of the present invention.

A self-aligning roller bearing for a gear box comprises an inner ring 2, an outer ring 1, a retainer 4 and rollers 3, wherein the inner wall of the outer ring is provided with a first spherical raceway, two sides of the outer wall of the inner ring are obliquely provided with symmetrical second spherical raceways, the rollers are arranged between the two second spherical raceways and the first spherical raceway, and the retainer is arranged between two rows of rollers; the two rows of rollers are symmetrically arranged, rolling surfaces of the rollers are of spherical structures, the rollers are arranged in a hollow mode, and a through hollow hole 6 is formed in the center of the roller body.

Furthermore, a large flange 7 matched with the roller is arranged on the outer wall of the inner ring, the large flange is arranged at the position with the largest thickness of the inner ring, and the large flange 7 is an arc-shaped flange.

Further, the end face of the roller is a large sphere base face, and the large sphere base face of the end face of the roller 3 is tangent to the arc-shaped face of the large flange 7.

Further, an oil storage tank 8 is arranged at the joint of the inner ring 2 and the large flange.

Furthermore, a small flange 9 matched with the roller is arranged on the outer wall of the inner ring, the small flange is arranged at the position with the minimum thickness of the inner ring, and the small flange is in clearance fit with the roller.

Further, an oil storage tank 8 is arranged at the joint of the inner ring and the small flange.

Further, the retainer 4 is a split type, two retainers are symmetrically arranged, and each retainer is provided with a row of rollers.

Furthermore, a plurality of lubricating grooves 5 are uniformly arranged on the inner diameter of each retainer 4.

Further, the diameter Dw =0.3 × Dw of the hollow bore 6, Dw being the roller diameter.

Furthermore, an outer groove 10 is annularly formed in the upper edge of the outer ring 1, the outer groove 10 is communicated with an oil filling hole 11, and the oil filling hole 11 extends to the inner wall of the outer ring.

The roller 3 adopts a hollow roller structure, so that the weight of the roller is reduced, the centrifugal force action of the roller at a high rotating speed is reduced, meanwhile, the full lubrication is facilitated, and the rotating speed capability of the bearing is improved. The rollers in the bearing are in a symmetrical roller spherical surface structure. The large flange 7 of the inner ring adopts an arc-shaped flange which has good lubricating property, is easy to form an oil film, is not easy to wear and generate heat, and improves the quality and the service life of the bearing. A plurality of lubricating grooves 5 are formed in the retaining frame 4 of the bearing at equal distances, and the lubricating grooves are formed, so that the bearing can be fully lubricated during high-speed operation, and the temperature rise of the bearing is reduced. The retainer 4 is of a novel light and wear-resistant alloy material integral solid structure, so that the weight of the retainer is reduced, the rigidity of the retainer is ensured, and the integral reliability of the bearing is improved.

The above list is only the preferred embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims

1. The utility model provides a self-aligning roller bearing for gear box which characterized in that: the roller cage comprises an inner ring, an outer ring, a retainer and rollers, wherein the inner wall of the outer ring is provided with a first spherical raceway, two sides of the outer wall of the inner ring are obliquely provided with symmetrical second spherical raceways, the rollers are arranged between the two second spherical raceways and the first spherical raceway, and the retainer is arranged between the two rows of rollers; the two rows of rollers are symmetrically arranged, rolling surfaces of the rollers are of spherical structures, the rollers are arranged in a hollow mode, and a through hollow hole is formed in the center of the roller body.

2. The self-aligning roller bearing for a gearbox according to claim 1, wherein: and a large flange matched with the roller is arranged on the outer wall of the inner ring, the large flange is arranged at the position with the largest thickness of the inner ring, and the large flange is an arc-shaped flange.

3. The self-aligning roller bearing for a gearbox according to claim 2, wherein: the end face of the roller is a large sphere base face, and the large sphere base face of the end face of the roller is tangent to the arc face of the large flange.

4. The self-aligning roller bearing for a gearbox according to claim 2, wherein: and an oil storage tank is arranged at the joint of the inner ring and the large flange.

5. The self-aligning roller bearing for a gearbox according to claim 1, wherein: and a small flange matched with the roller is arranged on the outer wall of the inner ring, the small flange is arranged at the position with the minimum thickness of the inner ring, and the small flange is in clearance fit with the roller.

6. The self-aligning roller bearing for a gearbox according to claim 5, wherein: and an oil storage tank is arranged at the joint of the inner ring and the small flange.

7. The self-aligning roller bearing for a gearbox according to claim 1, wherein: the retainer is of a split type, the two retainers are symmetrically arranged, and each retainer is provided with a row of rollers.

8. The self-aligning roller bearing for a gearbox according to claim 7, wherein: a plurality of lubricating grooves are uniformly arranged on the inner diameter of each retainer.

9. The self-aligning roller bearing for a gearbox according to claim 1, wherein: the diameter Dw =0.3 × Dw of the hollow bore, Dw being the roller diameter.

10. The self-aligning roller bearing for a gearbox according to claim 1, wherein: outer slot has been seted up along the annular on the outer lane, outer slot intercommunication oil filler point, and the oil filler point extends to the outer lane inner wall.