阅读说明：本技术 双列圆锥主轴轴承保持架 (Double-row conical main shaft bearing retainer ) 是由 肖长春 武广富 张丽娜 苍施良 张雅娜 徐猛 马建阳 范勇 于 2019-12-26 设计创作，主要内容包括：本发明属于轴承装备制造技术领域,具体涉及一种双列圆锥主轴轴承保持架,所述保持架为独立分体式,两列滚子分别被两侧保持架保持在轴承内圈和外圈的滚道之间,保持架包括支柱和连接在支柱两端的垫圈,所述支柱一端设置为螺纹端,另一端设置为平滑端,支柱的螺纹端与垫圈通过螺纹连接；两侧保持架上支柱的螺纹端的螺纹旋向相反。本发明的轴承在运转过程中,滚动体自转使得保持架支柱与保持架侧垫圈螺纹孔之间始终处于紧配合状态,从而提高轴承的稳定性。(The invention belongs to the technical field of bearing equipment manufacturing, and particularly relates to a double-row conical main shaft bearing retainer, which is an independent split type, wherein two rows of rollers are respectively retained between raceways of an inner ring and an outer ring of a bearing by retainers at two sides; the thread directions of the threaded ends of the struts on the retainers on the two sides are opposite. In the bearing, the self-rotation of the rolling bodies enables the retainer pillar and the threaded hole of the side washer of the retainer to be always in a tight fit state in the operation process, so that the stability of the bearing is improved.)

1. Double-row conical main shaft bearing retainer, its 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 of 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 of 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 two side retainers are symmetrically arranged.

6. 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.

7. 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.

8. 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.

Technical Field

The invention belongs to the technical field of bearing equipment manufacturing, and particularly relates to a double-row conical main shaft bearing retainer.

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 the fan structure of the prior art, the invention aims to provide a large double-row conical main shaft bearing retainer for improving the stability of the conical bearing retainer under the condition that a double-row conical bearing is used as a fan main shaft bearing.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the 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 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.

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 invention has the beneficial effects that: in the bearing, the self-rotation of the rolling bodies enables the retainer pillar and the threaded hole of the side washer of the retainer to be always in a tight fit state in the operation process, so that the stability of the bearing is improved.

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 technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.

Referring to the attached drawing 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 a bearing inner ring 1 and an outer ring 2 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 smooth end without threads, 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 retainer in the prior art, the retainer has the following advantages:

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.

The technical scheme of the invention is that the washers on two sides of the retainer are integrally machined, the welding spots do not exist between the retainer strut and the washers, one end of the retainer strut is in clearance fit with the washers, so that the retainer is in a flexible state, the retainer strut, the inner ring form a self-locking state of flexible connection, the retainer has no weak point caused by welding in the bearing operation process, the strength of the retainer is improved, and the reliability of the bearing is better ensured.

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