CN212343517U

CN212343517U - Detachable cover end dustproof structure of motor bearing

Info

Publication number: CN212343517U
Application number: CN202020602319.2U
Authority: CN
Inventors: 裴硕; 杨会欣; 卜艳红
Original assignee: Hebei Electric Motor Co ltd
Current assignee: Hebei Electric Motor Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-01-12
Anticipated expiration: 2030-04-21

Abstract

The utility model discloses a detachable cover end dustproof structure of a motor bearing, which comprises a motor main shaft, a dustproof sealing ring, a bearing inner cover, a screw, an end cover sealing ring and a bearing; the dustproof sealing ring, the bearing inner cover, the bearing, the end cover and the end cover sealing ring are sequentially sleeved on the motor spindle from front to back; the bearing inner cover is of an L-shaped ring structure, the inner peripheral part of the bearing inner cover is covered to the front end of the bearing, and the outer peripheral part of the bearing inner cover is provided with a through threaded hole; the dustproof sealing rings are inverted L-shaped rings, and the peripheral lips are backwards sealed at the front side and the outer side of the bearing inner cover; the end covers are of cover ring structures, cover the rear side and the outer side of the bearing and are provided with positioning holes opposite to the threaded holes in the inner cover of the bearing; the screw penetrates through the positioning hole and is fixedly connected with the threaded hole; the end cover sealing rings are V-shaped rings and are sealed between the end cover and the bearing and outside the end cover. The utility model discloses simple structure, can dismantle easy maintenance, dustproof effect is strong, and application scope is wide.

Description

Detachable cover end dustproof structure of motor bearing

Technical Field

The utility model relates to a lid holds dustproof construction, especially a detachable lid holds dustproof construction of motor bearing.

Background

The bearing is used as a rotating part of the motor and plays an important role in the smooth running of the motor, the performance and the service life of the motor are directly influenced by the performance and the service life of the bearing, and the performance and the service life of the bearing are influenced by the sealing structure of the bearing. Particularly, in the use process of the motor, once the sealing performance of the bearing is poor, the tiny particles enter the bearing, and the tiny particles can pollute bearing lubricating grease, influence the bearing lubrication, cause the abrasion of the bearing balls and further increase the temperature of the bearing; the long-term use of the bearing is damaged, and the service life of the motor is further influenced. Especially for the open-type motor, because the casing of the open-type motor is not totally closed, heat dissipation holes are reserved on the machine body and the front and rear end covers, and dust and other tiny particles easily enter a bearing chamber along the gap between the cover and the shaft along the wind power generated by the rotation of the motor, so that bearing lubricating grease is polluted, and further bearing steel balls are damaged. Although sealing structures in different forms are added to the inner ring and the outer ring of the bearing in the prior art to enhance the sealing performance of the inner ring and the outer ring so as to protect steel balls between the inner ring and the outer ring from being damaged by pollutants in order to ensure the service life of the motor; however, the sealing structure is not easy to disassemble, so that the later maintenance of the bearing is inconvenient; even the use of some sealing structures needs to change the original structure of the rotating shaft, and the use is not simple and convenient enough. In the prior art, a dustproof structure is arranged outside the bearing to protect the bearing, but the dustproof structure is too complicated.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a simple structure, sealed good motor bearing's detachable lid end dustproof construction.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a detachable cover end dustproof structure of a motor bearing comprises a motor main shaft, a dustproof sealing ring, a bearing inner cover, a screw, an end cover sealing ring and a bearing; the dustproof sealing ring, the bearing inner cover, the bearing, the end cover and the end cover sealing ring are sequentially sleeved on the motor spindle from front to back; the bearing inner cover is of an L-shaped ring structure, the inner peripheral part of the bearing inner cover is covered to the front end of the bearing, and the outer peripheral part of the bearing inner cover is provided with a through threaded hole; the dustproof sealing rings are inverted L-shaped rings, and the peripheral lips are backwards sealed at the front side and the outer side of the bearing inner cover; the end covers are of cover ring structures, cover the rear side and the outer side of the bearing and are provided with positioning holes opposite to the threaded holes in the inner cover of the bearing; the screw penetrates through the positioning hole and is fixedly connected with the threaded hole; the end cover sealing rings are V-shaped rings and are sealed between the end cover and the bearing and outside the end cover.

The detachable cover end dustproof structure of the motor bearing is characterized in that an elastic check ring is arranged between the bearing and the end cover sealing ring.

Foretell motor bearing's detachable lid end dustproof construction, all be equipped with the lubricating grease groove between bearing inner cup and the bearing to and between bearing inner cup and the motor spindle.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model forms a bearing chamber by arranging an inverted L-shaped dustproof sealing ring, a bearing inner cover, a screw, an end cover and a V-shaped end cover sealing ring on the motor main shaft, and a bearing sleeved on the motor main shaft is placed in the bearing chamber; the bearing chamber has good sealing performance, so that the bearing can be well protected from being polluted by tiny particles. The utility model has the characteristics of simple structure, removable assecmbly, easy to maintain etc, and dustproof effect is strong, application scope is wide.

The utility model discloses still play the effect of shaft shoulder through being equipped with circlip, prevent that V type sealing washer and main shaft from taking place the influence of radial and axial displacement, further increase the sealed effect of V type end cover sealing washer, and then protect the bearing, circlip still plays fixed bearing simultaneously, prevents that it from taking place the effect of axial float, has improved the stability of bearing; and lubricating grease grooves are arranged between the bearing inner cover and the bearing and between the bearing inner cover and the motor main shaft to lubricate the bearing and the motor main shaft, and a layer of oil surface protection is further formed at the bearing and the motor main shaft to improve the protectiveness of the bearing and the bearing inner cover. The utility model has the characteristics of leakproofness is high, long service life.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged partial view of the portion of FIG. 1A;

fig. 3 is a partially enlarged view of the portion of fig. 1B.

The reference numbers in the figures are: 1-end cover sealing ring, 2-elastic retainer ring, 3-end cover, 4-screw, 5-bearing inner cover, 6-bearing, 7-dustproof sealing ring, 8-motor spindle, 9-end cover sealing lip and 10-lubricating grease groove.

Detailed Description

Referring to fig. 1 and 2, the detachable cover end dustproof structure of the motor bearing comprises a motor spindle 8, a dustproof sealing ring 7, a bearing inner cover 5, a screw 4, an end cover 3, an end cover sealing ring 1 and a bearing 6. The dustproof sealing ring 7, the bearing inner cover 5, the bearing 6, the end cover 3 and the end cover sealing ring 1 are sequentially connected to the motor spindle 8 in a sleeved mode from front to back. The dustproof sealing ring 7 is of an inverted L shape and comprises a longitudinal inner peripheral lip and a transverse outer peripheral lip; the peripheral lip forms an annular groove with the motor spindle 8 rearward along the motor spindle 8. The bearing inner cover 5 is closely adjacent to the rear side of the dustproof sealing ring 7, and the bearing inner cover 5 is of an L-shaped ring structure and comprises a transverse inner peripheral part and a longitudinal outer peripheral part; the peripheral part is inserted forwards into an annular groove formed by the dustproof sealing ring 7 and the motor spindle 8; the dust seal 7 thus seals the front and outer sides of the bearing inner cover 5. And threaded holes penetrating through the front side and the rear side of the bearing inner cover 5 are formed in the peripheral part of the bearing inner cover 5. And lubricating grease grooves 10 are respectively arranged between the bearing inner cover 5 and the bearing 6 and between the bearing inner cover 5 and the motor spindle 8. The end cover 3 is a cover ring-shaped structure and comprises a longitudinal inner ring part and a transverse outer ring part; the outer ring part is forwards abutted against the rear side of the outer peripheral part of the bearing inner cover 5, and the bearing 6 is positioned between the inner ring part of the end cover 3 and the bearing inner cover 5; thus, the end cover 3 and the bearing inner cover 5 can completely cover the bearing 6. The outer ring part of the end cover 3 is provided with positioning holes penetrating through the front end and the rear end; the positioning hole is the same as the threaded hole of the bearing inner cover 5 in size and opposite in position. The screw 4 is threaded in the threaded hole after passing through the positioning hole, so that the end cover 3 and the bearing inner cover 5 are fixedly connected together. The inner side of the inner ring part of the end cover 3 is a smooth surface, and a gap is formed between the inner side of the inner ring part and the motor spindle 8; an annular groove is formed in the outer side of the inner ring part of the end cover 3; the annular groove is coaxial with the motor spindle 8. The end cover sealing ring 1 is a V-shaped ring and comprises an outer peripheral lip and an inner peripheral lip; the inner peripheral lip is sealed in a gap between the inner ring part of the end cover 3 and the motor spindle 8, and the outer peripheral lip extends into an annular groove on the outer side of the inner ring part of the end cover 3. And the inner peripheral lip of the end cover sealing ring 1 and the bearing 6 are provided with elastic retainer rings 2 so as to further increase the sealing property and stabilize the bearing.

The novel installation and use according to the present further demonstrates its beneficial effects.

Referring to fig. 1, 2 and 3, the nesting is performed from front to back. Firstly, a dustproof sealing ring 7 is sleeved on a motor spindle 8. And secondly, sleeving the bearing inner cover 5 on the motor main shaft 8, and injecting lubricating grease into the lubricating grease groove 10. And thirdly, a bearing 6 is sleeved on the motor main shaft 8, and the bearing 6 is forwards abutted against the bearing inner cover 5, so that the placement of the bearing inner cover 5 is stabilized. Fourthly, the end cover 3 is sleeved on the motor spindle 8, and the position of the end cover 3 is corrected, so that the positioning hole at the upper end of the end cover 3 is opposite to the threaded hole at the upper end of the bearing inner cover 5. And fifthly, inserting a screw 4, connecting the end cover 3 and the bearing inner cover 5 in a threaded manner, and fixing the end cover 3 and the bearing inner cover 5 together. And sixthly, sleeving the elastic retainer ring 2 on the motor main shaft 8 to enhance sealing and stabilize the bearing. And seventhly, sleeving and connecting the rubber end cover sealing ring 1 on the motor main shaft 8, and fastening the end cover sealing lip 9 and the annular groove on the end cover 3 to form a completely sealed bearing chamber. Because the inner sleeve of the bearing 6 is integrally connected with the motor spindle 8 and relatively rotates with the outer sleeve through the steel balls, when the motor works, the bearing chamber is very stable, and cannot be damaged by linkage due to the rotation of the motor spindle 8. When the bearing needs to be disassembled, the screw 4 can be screwed out, the end cover 3 and the bearing inner cover 5 are disassembled, and then the bearing 6 is checked and maintained.

Claims

1. The utility model provides a motor bearing's detachable lid end dustproof construction which characterized in that: the motor comprises a motor spindle (8), a dustproof sealing ring (7), a bearing inner cover (5), a screw (4), an end cover (3), an end cover sealing ring (1) and a bearing (6); the dustproof sealing ring (7), the bearing inner cover (5), the bearing (6), the end cover (3) and the end cover sealing ring (1) are sequentially sleeved on the motor spindle (8) from front to back; the bearing inner cover (5) is of an L-shaped ring structure, the inner periphery of the bearing inner cover is covered to the front end of the bearing (6), and the outer periphery of the bearing inner cover is provided with a through threaded hole; the dustproof sealing ring (7) is an inverted L-shaped ring, and the peripheral lips of the dustproof sealing ring are sealed on the front side and the outer side of the bearing inner cover (5) backwards; the end cover (3) is of a cover ring structure, covers the rear side and the outer side of the bearing (6), and is provided with a positioning hole opposite to a threaded hole in the bearing inner cover (5); the screw (4) penetrates through the positioning hole and then is fixedly connected with the threaded hole; the end cover sealing ring (1) is a V-shaped ring and is sealed between the end cover (3) and the bearing (6) and outside the end cover (3).

2. The motor bearing's removable cover end dust-proof construction of claim 1, characterized in that: and an elastic retainer ring (2) is arranged between the bearing (6) and the end cover sealing ring (1).

3. The motor bearing's removable cover end dust-proof structure of claim 1 or 2, characterized in that: and lubricating grease grooves (10) are arranged between the bearing inner cover (5) and the bearing (6) and between the bearing inner cover (5) and the motor spindle (8).