CN215487274U

CN215487274U - Main shaft bearing sealing structure of wind generating set

Info

Publication number: CN215487274U
Application number: CN202122057605.2U
Authority: CN
Inventors: 谢凯
Original assignee: Wuxi Xinyuan Electromechanical Precision Manufacturing Co ltd
Current assignee: Wuxi Xinyuan Electromechanical Precision Manufacturing Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-01-11
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses a main shaft bearing sealing structure of a wind generating set, which comprises a bearing seat and a bearing body, wherein the bearing body comprises a bearing outer ring and a bearing inner ring, the outer side wall of the bearing outer ring is fixedly connected with the bearing seat, the inner side wall of the bearing inner ring is fixedly connected with the main shaft body, sealing rings are arranged on two sides of the bearing body, the inner side wall of each sealing ring is fixedly connected with the main shaft body, first steps are arranged on two sides of the bearing seat, an end cover is arranged on the surface of each first step, and a second step and a third step are arranged on one side, far away from the bearing body, of each end cover. According to the utility model, the bearing seat, the two end covers, the first semicircular groove, the second semicircular groove and the sealing ring are arranged, when the end covers are fixed on one side of the bearing seat, the sealing ring is clamped in the first semicircular groove and the second semicircular groove, so that lubricating oil in the bearing body can be prevented from leaking between the bearing seat and the end covers, and the sealing property of the joint of the end covers and the bearing seat is improved.

Description

Main shaft bearing sealing structure of wind generating set

Technical Field

The utility model relates to the technical field of bearing sealing, in particular to a main shaft bearing sealing structure of a wind generating set.

Background

The wind power bearing is a special bearing, the service environment is severe, the maintenance cost is high, and the service life is long.

At present, the main shaft bearing of the megawatt double-fed wind generating set mainly achieves a sealing effect by tightly attaching an oil lip on an oil seal with an end cover and a sealing ring, and when the sealing ring rotates along with an inner ring of the bearing, the sealing ring can rub against the oil seal, so that the oil seal is seriously abraded after being used for a long time, and the sealing performance of the bearing is influenced. In addition, a sealing structure is not arranged between a bearing seat and an end cover in the conventional bearing structure, so that the problem of oil leakage of the conventional main shaft bearing is common, external pollutants such as dust and the like can enter the bearing to influence the service life of the bearing, and the leaked lubricating grease can cause certain pollution to the environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a main shaft bearing sealing structure of a wind generating set.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a wind generating set's main shaft bearing seal structure, includes bearing frame and bearing body, the bearing body includes bearing inner race and bearing inner race, bearing inner race lateral wall and bearing frame fixed connection, bearing inner race inside wall fixedly connected with main shaft body, bearing body both sides all are equipped with the sealing ring, sealing ring inside wall and main shaft body fixed connection, the bearing frame both sides all are equipped with first step, first step surface is equipped with the end cover, one side that the bearing body was kept away from to the end cover is equipped with second step and third step, second step and third step surface are equipped with oil blanket and apron respectively.

Furthermore, first semicircular groove has been seted up on first step surface, the end cover has been close to first semicircular groove department and has been seted up the second semicircular groove, first semicircular groove is equipped with the sealing washer with second semicircular groove inside jointly for end cover and bearing frame laminating department have also had sealed effect.

Furthermore, a plurality of first screw holes have been seted up on first step surface, the end cover has all seted up first perforation near first screw hole department, first screw hole is equipped with first bolt with corresponding first perforation inside jointly, is convenient for fix the end cover on the bearing frame, and can extrude the sealing washer fixedly.

Furthermore, two second grooves are formed in the surface of the second step, two first oil lips are arranged on one side, close to the two second grooves, of the oil seal and clamped with the two second grooves respectively, the contact area of the oil seal and the end cover is increased, and therefore the sealing effect between the oil seal and the end cover is improved.

Further, two first grooves are formed in the position, close to the oil seal, of the surface of the sealing ring, two second oil lips are arranged on the inner side wall of the oil seal, close to the two first grooves, and the second oil lips are clamped with the two first grooves respectively and play a role in double insurance through the addition of one second oil lip, and the sealing effect between the oil seal and the sealing ring is improved.

Further, the draw-in groove has all been seted up to the oil blanket both sides near second oil lip department, the inside spring coil that is equipped with of draw-in groove can be with two second oil lips extrusion into two first recesses through the spring coil in, prevent to lead to second oil lip and sealing ring contact inseparable because of wearing and tearing.

Furthermore, a plurality of second screw holes have been seted up on the third step surface, the apron surface has all been seted up the second near second screw hole department and has been perforated, the second screw hole is perforated inside with the second and is equipped with the second bolt jointly for the apron can be fixed on the second step, and extrude fixedly to the oil blanket.

The utility model has the beneficial effects that:

1. when the end cover is used, the bearing seat, the first step, the two end covers, the first semicircular groove, the second semicircular groove and the sealing ring are arranged, when the end covers are fixed on one side of the bearing seat, the sealing ring is clamped in the first semicircular groove and the second semicircular groove, lubricating oil in the bearing body can be prevented from leaking between the bearing seat and the end covers, and therefore the sealing performance of the joint of the end covers and the bearing seat is improved.

2. When the oil seal is used, the second step, the third step, the oil seal and the cover plate are arranged on the outer side of the end cover, the two first oil lips are arranged on the oil seal and clamped with the two second grooves in the end cover, the two second oil lips are arranged at the bottom end of the oil seal and clamped with the two first grooves in the sealing ring, so that the traditional attaching mode of the oil seal and the cover plate is replaced, the sealing performance between the end cover and the sealing ring is improved, the added second oil lip can prevent the oil leakage caused by large abrasion of the oil lips in long-term use, and the design of the two second oil lips plays a role of double insurance in the sealing performance.

Drawings

FIG. 1 is a main sectional view of the present invention;

FIG. 2 is a perspective view of the cover plate of the present invention;

FIG. 3 is an enlarged view of the utility model at A;

fig. 4 is an enlarged view of the present invention at B.

Illustration of the drawings:

1. a bearing seat; 11. a first step; 12. a first semicircular groove; 13. a first threaded hole; 2. a bearing body; 21. a bearing outer race; 22. a bearing inner race; 3. a main shaft body; 4. a seal ring; 41. a first groove; 5. an end cap; 51. a second semi-circular groove; 52. a first perforation; 53. a second step; 54. a third step; 55. a second threaded hole; 56. a second groove; 6. a seal ring; 7. a first bolt; 8. a cover plate; 81. a second perforation; 9. a second bolt; 10. oil sealing; 101. a first oil lip; 102. a card slot; 103. a second oil lip; 104. a spring ring.

Detailed Description

As shown in fig. 1 and 4, a main shaft bearing sealing structure of a wind generating set is related to, including bearing frame 1 and bearing body 2, bearing body 2 includes bearing outer race 21 and bearing inner race 22, bearing outer race 21 lateral wall and bearing frame 1 fixed connection, bearing inner race 22 inside wall fixedly connected with main shaft body 3, bearing body 2 both sides all are equipped with sealing ring 4, sealing ring 4 inside wall and main shaft body 3 fixed connection, bearing frame 1 both sides all are equipped with first step 11, first step 11 surface is equipped with end cover 5, one side that bearing body 2 was kept away from to end cover 5 is equipped with second step 53 and third step 54, second step 53 and third step 54 surface are equipped with oil blanket 10 and apron 8 respectively.

As shown in fig. 3, a first semicircular groove 12 is formed on the surface of the first step 11, a second semicircular groove 51 is formed at the position of the end cover 5 close to the first semicircular groove 12, and the first semicircular groove 12 and the second semicircular groove 51 are provided with the sealing ring 6. A plurality of first screw holes 13 are opened on the surface of the first step 11, first through holes 52 are opened at the positions, close to the first screw holes 13, of the end cover 5, and first screw holes 13 and corresponding first through holes 52 are internally provided with first bolts 7 together.

As shown in fig. 4, two second grooves 56 are formed on the surface of the second step 53, two first oil lips 101 are arranged on one side of the oil seal 10 close to the two second grooves 56, and the two first oil lips 101 are respectively engaged with the two second grooves 56. Two first grooves 41 are formed in the surface of the sealing ring 4 close to the oil seal 10, two second oil lips 103 are arranged on the inner side wall of the oil seal 10 close to the two first grooves 41, and the two second oil lips 103 are respectively clamped with the two first grooves 41. Clamping grooves 102 are formed in the two sides of the oil seal 10 close to the second oil lip 103, and spring rings 104 are arranged in the clamping grooves 102. A plurality of second threaded holes 55 are formed in the surface of the third step 54, second through holes 81 are formed in the surface of the cover plate 8 close to the second threaded holes 55, and second bolts 9 are jointly arranged in the second threaded holes 55 and the second through holes 81.

When the installation is used: firstly, a sealing ring 6 is clamped in a first semicircular groove 12, then an end cover 5 is attached to a first step 11, the end cover 5 is fixed on the first step 11 through a first bolt 7, at the moment, the sealing ring 6 is extruded and fixed in the first semicircular groove 12 and a second semicircular groove 51, the sealing performance between the end cover 5 and a bearing seat 1 is guaranteed, then two clamping grooves 102 at the bottom end of an oil seal 10 are clamped into two spring rings 104, then the oil seal 10 is clamped on the surface of a second step 53, two first oil lips 101 are clamped with two second grooves 56, two second oil lips 103 are clamped with two first grooves 41 under the extrusion of the spring rings 104, the sealing performance between the oil seal 10 and the end cover 5 and a sealing ring 4 is guaranteed, and finally, a cover plate 8 is clamped on a third step 54 and is fixed in the third step 54 through a second bolt 9.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a wind generating set's main shaft bearing seal structure, includes bearing frame (1) and bearing body (2), its characterized in that: bearing body (2) are including bearing inner race (21) and bearing inner race (22), bearing inner race (21) lateral wall and bearing frame (1) fixed connection, bearing inner race (22) inside wall fixedly connected with main shaft body (3), bearing body (2) both sides all are equipped with sealing ring (4), sealing ring (4) inside wall and main shaft body (3) fixed connection, bearing frame (1) both sides all are equipped with first step (11), first step (11) surface is equipped with end cover (5), one side that bearing body (2) were kept away from in end cover (5) is equipped with second step (53) and third step (54), second step (53) and third step (54) surface are equipped with oil blanket (10) and apron (8) respectively.

2. The main shaft bearing sealing structure of the wind generating set according to claim 1, wherein: first semicircular groove (12) have been seted up on first step (11) surface, second semicircular groove (51) have been seted up in end cover (5) department of being close to first semicircular groove (12), first semicircular groove (12) and second semicircular groove (51) inside are equipped with sealing washer (6) jointly.

3. The main shaft bearing sealing structure of the wind generating set according to claim 1, wherein: a plurality of first threaded holes (13) are formed in the surface of the first step (11), first through holes (52) are formed in the positions, close to the first threaded holes (13), of the end cover (5), and first bolts (7) are jointly arranged in the first threaded holes (13) and the corresponding first through holes (52).

4. The main shaft bearing sealing structure of the wind generating set according to claim 1, wherein: two second grooves (56) are formed in the surface of the second step (53), two first oil lips (101) are arranged on one side, close to the two second grooves (56), of the oil seal (10), and the two first oil lips (101) are clamped with the two second grooves (56) respectively.

5. The main shaft bearing sealing structure of the wind generating set according to claim 1, wherein: two first grooves (41) are arranged on the surface of the sealing ring (4) close to the oil seal (10), two second oil lips (103) are arranged on the inner side wall of the oil seal (10) close to the two first grooves (41), and the second oil lips (103) are clamped with the two first grooves (41) respectively.

6. The main shaft bearing sealing structure of a wind turbine generator set according to claim 1 or 5, wherein: clamping grooves (102) are formed in the positions, close to the second oil lip (103), of the two sides of the oil seal (10), and spring rings (104) are arranged in the clamping grooves (102).

7. The main shaft bearing sealing structure of the wind generating set according to claim 1, wherein: a plurality of second threaded holes (55) are formed in the surface of the third step (54), second through holes (81) are formed in the surface of the cover plate (8) close to the second threaded holes (55), and second bolts (9) are jointly arranged inside the second threaded holes (55) and the second through holes (81).