CN211175001U

CN211175001U - Double-row conical main shaft bearing retainer

Info

Publication number: CN211175001U
Application number: CN201922388145.4U
Authority: CN
Inventors: 肖长春; 武广富; 张丽娜; 苍施良; 张雅娜; 徐猛; 马建阳; 范勇
Original assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Current assignee: Wafangdian City bearing group wind power Bearing Co.,Ltd.
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-04
Anticipated expiration: 2029-12-26

Abstract

The utility model belongs to the technical field of bearing equipment manufacturing, concretely relates to double-row conical main shaft bearing retainer, the retainer is independent split type, two rows of rollers are kept between the raceway of bearing inner circle and outer lane by the retainer of both sides respectively, the retainer includes pillar and the packing ring of connection at pillar both ends, pillar one end sets up to the screw thread end, and the other end sets up to smooth end, and the screw thread end of pillar passes through threaded connection with the packing ring; the thread directions of the threaded ends of the struts on the retainers on the two sides are opposite. The utility model discloses a bearing is at the operation in-process, and the rolling element rotation makes to be in the tight fit state all the time between holder pillar and the holder side packing ring screw hole to improve the stability of bearing.

Description

Double-row conical main shaft bearing retainer

Technical Field

The utility model belongs to the technical field of the bearing equipment is made, concretely relates to double-row circular cone main shaft bearing holder.

Background

The wind power main shaft is an important part in the whole fan, is positioned between a fan blade and a speed increasing box and is used for transmitting kinetic energy generated by the rotation of the blade to the speed increasing box. With the continuous development of the wind power industry, the double-row conical bearing is gradually applied to a main shaft of a fan, the stress condition of a wind wheel is extremely bad in the operation process of a wind driven generator, the wind wheel needs to continuously operate under a rapidly changing load, and the main shaft bearing plays a vital role in ensuring the stable operation of the fan, and blades borne by the main shaft bearing transmit various complex working conditions on the main shaft, so that the double-row conical bearing is different from a common turntable bearing in design, manufacture and maintenance and the service life of the double-row conical bearing is ensured for 20 years.

Because the working environment of the fan is complex and severe, parts of the bearing are particularly important in structural design, manufacturing and the like, wherein the double-row conical main shaft bearing retainer is an important aspect of research all the time. As the welding spot of the retainer is easy to fall off along with the operation of the bearing, the service performance of the bearing is affected, and the service life of the bearing cannot be met.

Disclosure of Invention

According to above-mentioned prior art's fan structure, the utility model aims at providing a large-scale double-row circular cone main shaft bearing holder for the stability that improves the circular cone bearing holder under the condition that fan main shaft bearing used double-row circular cone bearing.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a double-row conical main shaft bearing retainer is an independent split type, two rows of rollers are respectively retained between raceways of an inner ring and an outer ring of a bearing by retainers on two sides, the retainer comprises a strut and gaskets connected to two ends of the strut, one end of the strut is provided with a threaded end, the other end of the strut is provided with a smooth end, and the threaded end of the strut is connected with the gaskets through threads; the thread directions of the threaded ends of the struts on the retainers on the two sides are opposite.

Further, the smooth end of the strut is clearance fit with the washer.

Further, the gasket comprises an inner gasket and an outer gasket, the outer gasket close to the end face of the bearing is provided with a threaded hole and is connected with the threaded end of the support pillar, and the inner gasket close to the center of the bearing is connected with the smooth end of the support pillar.

Further, the screwing directions of the threaded holes of the outer washers on the two sides are opposite.

Further, the two side retainers are symmetrically arranged.

Further, the washer is in clearance fit with the roller end face.

Further, the gasket is in clearance fit with the bearing inner ring, and the gasket is in clearance fit with the bearing outer ring.

Further, the roller end face is in contact with the side wall of the bearing inner ring raceway.

The utility model has the advantages that: the utility model discloses a bearing is at the operation in-process, and the rolling element rotation makes to be in the tight fit state all the time between holder pillar and the holder side packing ring screw hole to improve the stability of bearing.

Drawings

FIG. 1 is a schematic view of a cage construction;

in the figure: 1. inner ring, 2, outer ring, 3, roller, A, D: outer gasket, B, E: strut, C, F: an inner gasket.

Detailed Description

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

Referring to the attached figure 1, the double-row conical main shaft bearing retainer is an independent split type, the two side retainers are symmetrically arranged, two rows of rollers 3 are respectively retained between raceways of an inner ring 1 and an outer ring 2 of a bearing by the two side retainers, the first retainer comprises a retainer pillar B, an outer washer A and an inner washer C, the second retainer comprises a retainer pillar E, an outer washer D and an inner washer F, one end of the pillar B is a forward-rotation screw, the outer washer A is provided with a forward-rotation threaded hole and is matched with a forward-rotation screw end of the pillar B, the other end of the pillar B is a non-threaded smooth end, and the inner washer C is in clearance fit with the smooth end of the pillar B; one end of the pillar E is a reverse-rotation screw, the outer gasket D is provided with a reverse-rotation threaded hole and is matched with the reverse-rotation screw end of the pillar E, the other end of the pillar E is a smooth end without threads, and the inner gasket F is in clearance fit with the smooth end of the pillar E.

Further, the outer gasket A and the outer gasket D are in clearance fit with the end faces of the rollers. The friction between the gasket and the end surface of the roller can be reduced, the thread can be screwed conveniently, and a self-locking state of flexible connection is formed.

Furthermore, the inner washer C and the inner washer F are in clearance fit with the bearing inner ring 1 to limit the displacement of the inner washer, so that the inner ring, the inner washer, the strut and the outer washer form a flexibly connected self-locking state, and the flexibility of the retainer can be effectively improved.

Further, the roller end face is in contact with the side wall of the bearing inner ring raceway. The roller can be limited in the bearing raceway, the roller is prevented from moving, and the clearance fit between the gasket and the bearing ring is ensured.

Compared with the holder in the prior art, the utility model has the advantages of it is following:

the main shaft bearing structure is a double-row tapered roller bearing. The conventional design of the tapered roller retainer pillar and the gasket applied in the prior art is a forward-screwing screw, but along with the operation of the bearing, the retainer pillar and the gasket on one side of the bearing are in threaded connection and are loosened. And this patent designs the holder pillar and the packing ring of bearing one side for the positive thread connection, and opposite side holder pillar and packing ring design are the derotation threaded connection for the bearing is at the operation in-process, and the rolling element is from passing and is making to be in the tight fit state between holder pillar B and the holder side packing ring A screw hole all the time, thereby improves the stability of bearing.

Adopt welding form's holder, because along with the operation of bearing, holder welding spot drops easily, can influence the performance of bearing, and the technical scheme of the utility model, holder both sides packing ring is whole car system processing, there is not welding spot in holder pillar and packing ring, the one end and the packing ring clearance fit of holder pillar make the holder be in a flexible state, and make the holder packing ring, the pillar, the inner circle forms flexonics's auto-lock state, the holder does not have the weak point because of the welding produces in bearing operation in-process, improve the intensity of holder, more be favorable to guaranteeing the reliability of bearing.

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. A double-row conical main shaft bearing retainer is characterized in that: the retainer is an independent split type, two rows of rollers are respectively retained between raceways of an inner ring and an outer ring of the bearing by the retainers on two sides, the retainer comprises a strut and gaskets connected to two ends of the strut, one end of the strut is a threaded end, the other end of the strut is a smooth end, and the threaded end of the strut is in threaded connection with the gaskets; the thread directions of the threaded ends of the struts on the retainers on the two sides are opposite.

2. The double row conical main shaft bearing cage according to claim 1, wherein: the smooth end of the strut is in clearance fit with the washer.

3. The double row conical main shaft bearing cage according to claim 2, wherein: the gasket comprises an inner gasket and an outer gasket, the outer gasket close to the end face of the bearing is provided with a threaded hole and is connected with the threaded end of the support pillar, and the inner gasket close to the center of the bearing is in clearance fit with the smooth end of the support pillar.

4. The double row conical main shaft bearing cage according to claim 3, wherein: the screw thread holes of the outer washers on the two sides have opposite rotating directions.

5. The double row conical main shaft bearing cage according to claim 1, wherein: the washer is in clearance fit with the end face of the roller.

6. The double row conical main shaft bearing cage according to claim 1, wherein: the gasket is in clearance fit with the bearing inner ring, and the gasket is in clearance fit with the bearing outer ring.

7. The double row conical main shaft bearing cage according to claim 1, wherein: the end face of the roller is in contact with the side wall of the raceway of the bearing inner ring.