CN213808512U

CN213808512U - High-precision low-friction super-huge type bearing solid retainer

Info

Publication number: CN213808512U
Application number: CN202022872097.9U
Authority: CN
Inventors: 郝文路; 吴群; 胡占圈; 杨惠萍
Original assignee: LUOYANG XINQIANGLIAN SLEWING BEARING CO Ltd
Current assignee: LUOYANG XINQIANGLIAN SLEWING BEARING CO Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-07-27
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses a high-precision low-friction super-huge type bearing entity retainer, which comprises a circular retainer body, wherein a pocket hole for placing a rolling element is arranged in the circumferential direction of the retainer body, the pocket hole is in a conical structure, the inner walls of flanges at two sides of the pocket hole are inclined planes, the inclined planes at two sides of the same pocket hole are symmetrically arranged relative to the center of the pocket hole, and a step protruding towards the central direction of the retainer is arranged below the inner wall of the retainer body. The high-precision long-life running of the wind power bearing is facilitated.

Description

High-precision low-friction super-huge type bearing solid retainer

Technical Field

The utility model belongs to the technical field of wind-powered electricity generation bearing holder, concretely relates to super-huge bearing entity holder of high accuracy low friction.

Background

The wind power generator is an electric power device which converts wind energy into mechanical work, and the mechanical work drives a rotor to rotate so as to finally output alternating current. The wind-driven generator generally comprises wind wheels, a generator, a direction regulator, a tower, a speed-limiting safety mechanism, an energy storage device and other components. The working principle is simple, the wind wheel rotates under the action of wind force, the kinetic energy of the wind is converted into mechanical energy of a wind wheel shaft, and the generator rotates under the driving of the wind wheel shaft to generate electricity. Because the wind driven generator has a larger structural size, the use performance of the wind power bearing plays an important role in the normal operation of the generator.

The existing bearing retainer is divided into a steel retainer, a non-ferrous metal retainer and a non-metallic retainer, the processing method mainly comprises a stamping retainer and a plastic casting method for manufacturing the retainer, the raw material for manufacturing the retainer by the plastic casting method is engineering plastic, the raw material for stamping the retainer is steel plate and brass, the retainer formed by stamping needs to be expanded when being assembled, and is contracted after being assembled with a rolling body and a ferrule. However, for the wind power bearing with a diameter larger than 2m and an excessive accuracy requirement, the retainer formed by stamping cannot meet the requirement of the wind power bearing, because the retainer has an excessively large size and a low stamping accuracy, and the retainer is further subjected to expansion and contraction first and then, and the precision of the retainer is seriously damaged, so that the overall accuracy of the bearing cannot meet the requirement of use, and therefore, a high-precision low-friction oversized bearing entity retainer is urgently needed to solve the problem.

Disclosure of Invention

The utility model provides a solve above-mentioned technical problem, the utility model provides a super-huge bearing entity holder of high accuracy low friction is provided, this holder exceeds 2 m's super-huge bearing holder for the diameter size, adopt numerical control machining center to carry out machining to the holder, the working method of traditional holder stamping forming has been replaced, and the flange of interval design has at the position design of holder and inner circle contact, be used for storing lubricating oil, the precision that can guarantee the holder satisfies the user demand, be favorable to wind-powered electricity generation bearing's high accuracy, long-life operation.

The utility model adopts the technical proposal that: the utility model provides a super-huge bearing entity holder of high accuracy low friction, including the annular holder body of circle, the pocket hole that is used for placing the rolling element is offered to the circumferencial direction of holder body, the pocket hole appearance is the toper structure, and the both sides flange inner wall in pocket hole is the inclined plane, the inclined plane of same pocket hole both sides sets up for the central symmetry in pocket hole, inner wall below the position of holder body is provided with to the bellied step of holder central direction, the internal diameter surface position of step is equipped with a plurality of recesses around holder center evenly distributed.

The shape of the retainer body is a conical structure.

The holder body is made of copper.

And through holes communicated with the pocket holes are formed in the four corners of the pocket holes.

The diameter of the retainer body is larger than 2 m.

The groove is of a V-shaped structure, and the angle of the V shape is 168 degrees.

The processing method of the high-precision low-friction super-huge type bearing solid retainer comprises the following steps:

step one, blanking; selecting a proper annular blank for blanking;

turning; turning the blank material into a conical ring on a numerical control machining center;

step three, processing a pocket; a plurality of pockets which are uniformly distributed around the center of the circular ring are formed in the wall thickness direction of the conical circular ring, through holes are drilled in the four corners of each pocket, flanges on the left side and the right side of each pocket are of conical structures in the cross section direction, and the inner walls of the conical structures are tangent to the outer diameters of the rolling bodies.

In the first step, the external diameter size of the blank is larger than 2 m.

The four corners of the pocket are drilled with through holes, so that the rolling elements can be conveniently assembled subsequently, and the interference between the corner positions of the rolling elements and the corner positions of the pocket is avoided; secondly, the appearance processing of pocket hole can be convenient for, the effect in tool withdrawal groove is played.

According to the high-precision low-friction super-huge type bearing solid retainer, the retainer is made of copper materials, the traditional pressing forming processing mode is replaced, a numerical control processing center is adopted for machining, the processing precision of the retainer can be guaranteed to meet the use requirement, the retainer can be assembled with a ferrule after being filled with rolling bodies, the overall precision of a bearing can be improved, and the high-precision long-life operation of the bearing is guaranteed.

The utility model has the advantages that:

the utility model has the advantages of simple structure and reasonable design, processing is convenient, and this holder is the oversize bearing holder that the diameter size exceeds 2m, adopts numerical control machining center to carry out machining to the holder, has replaced traditional holder stamping forming's working method, and has the flange of interval design at the position design of the holder with the inner circle contact for store lubricating oil, the precision that can guarantee the holder satisfies the user demand, be favorable to wind-powered electricity generation bearing's high accuracy, long-life operation.

Drawings

FIG. 1 is a three-dimensional structure of the present invention;

FIG. 2 is a block diagram of a step of machining the cage;

FIG. 3 is a view showing a second step of machining the retainer;

FIG. 4 is a three-step diagram of the step of machining the cage;

FIG. 5 is a cross-sectional view of the pocket of the present invention;

fig. 6 is a partially enlarged view of the present invention.

The labels in the figure are: 1. a cage body; 2. a pocket hole; 3. a through hole; 4. an inclined surface; 5. a step; 501. a groove; 6. a blank of wool.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in the figure, the high-precision low-friction super-huge type bearing solid retainer comprises a circular retainer body 1, a pocket 2 for placing a rolling body is arranged in the circumferential direction of the retainer body 1, the pocket 2 is in a conical structure, the inner walls of the flanges at two sides of the pocket 2 are inclined planes 4, the inclined planes 4 at two sides of the same pocket 2 are symmetrically arranged relative to the center of the pocket 2, a step 5 protruding towards the center of the retainer is arranged below the inner wall of the retainer body 1, a plurality of grooves 501 evenly distributed around the center of the retainer are arranged on the inner diameter surface of the step 5, the grooves 501 are in a V-shaped structure, the angle of the V shape is 168 degrees, the steps 5 are arranged for reinforcing the whole retainer, the integral structural strength of the retainer is improved, and when the arranged grooves 501 work, a certain amount of grease can be stored in the positions of the grooves 501, the bearing is convenient to lubricate in the working process, and the friction resistance between the retainer and the bearing inner ring is reduced.

step one, blanking; selecting a proper annular blank 61 for blanking, wherein as shown in fig. 2, the annular blank 6 is made of a copper material with the outer diameter larger than 2m and a rectangular cross section;

turning; turning the blank material 6 into a circular ring with a conical shape on a numerical control machining center, as shown in figure 3, turning the circular ring on the numerical control machining center, wherein the circular ring is conical in shape, and the conical degree is the same as that of the bearing inner ring to be assembled;

step three, processing the pocket 2; as shown in fig. 4, a plurality of pockets 2 are uniformly distributed around the center of a conical ring in the wall thickness direction of the conical ring, the pockets 2 are conical in shape and are mainly used for matching with conical rollers, corresponding shape processing can be carried out according to actual needs, through holes 3 are drilled at four corners of the pockets 2, flanges at the left side and the right side of the pockets 2 are conical in cross section direction, namely, inclined planes 4 (shown in fig. 5) are arranged on the inner wall of the conical structure and are tangent to the outer diameter of a rolling body, specifically, the pockets 2 are horn-shaped in cross section, the dimension at the small side is smaller than the outer diameter of the rollers, the dimension at the large side is larger than the outer diameter of the rollers, the rollers can be loaded into the pockets 2 from the large side to realize the assembly between the rollers and the retainer, the outer wall of the rollers is tangent to the inclined planes 4, so as to avoid the jamming phenomenon of the rollers and the flanges of the retainer in the moving process, ensuring smooth running of the roller.

In the third step, through holes 3 are drilled at the four corners of the pocket 2, so that the subsequent assembly of the rolling body is facilitated, and the interference between the corner positions of the rolling body and the corner positions of the pocket 2 is avoided; secondly, the appearance processing of pocket 2 can be convenient for, play the effect in tool withdrawal groove.

For a large-size retainer of an oversize wind power bearing, the traditional retainer processing method is not applicable, the traditional retainer is formed by die casting (stamping) and can meet the normal working requirement of a small and medium-size bearing, but can not meet the processing of a bearing retainer with the diameter size of more than 2m, the precision of the cage does not meet the use requirement of an oversize bearing, the processing method of the high-precision oversize solid basket-shaped cage selects the material of the cage as a steel material which can not be severely deformed due to thermal expansion and cold contraction, and replaces the traditional processing mode of pressing and forming, adopts a numerical control processing center to carry out mechanical processing, the processing precision of the retainer can be guaranteed to meet the use requirement, the retainer can improve the overall precision of the bearing after the rolling body is arranged in the retainer and is mutually assembled with the ferrule, and the high-precision and long-life operation of the bearing is guaranteed.

Claims

1. The utility model provides a super-huge bearing entity holder of high accuracy low friction which characterized in that: including the annular holder body of circle, the pocket hole that is used for placing the rolling element is offered to the circumferencial direction of holder body, pocket hole appearance is the toper structure, and the both sides flange inner wall in pocket hole is the inclined plane, the inclined plane of same pocket hole both sides sets up for the central symmetry in pocket hole, be provided with the bellied step to holder central direction in the inner wall below position of holder body, the internal diameter surface position of step is equipped with a plurality of recesses around holder central evenly distributed, the recess is V font structure, and V font angle is 168.

2. The high-precision low-friction oversized bearing solid cage as claimed in claim 1, wherein: the shape of the retainer body is a conical structure.

3. The high-precision low-friction oversized bearing solid cage as claimed in claim 1, wherein: the material of the retainer body is copper.

4. The high-precision low-friction oversized bearing solid cage as claimed in claim 1, wherein: the four corners of the pocket are provided with through holes communicated with the pocket.

5. The high-precision low-friction oversized bearing solid cage as claimed in claim 1, wherein: the diameter of the retainer body is larger than 2 m.