CN202997793U

CN202997793U - A rolling bearing structure used for an explosion-isolating motor

Info

Publication number: CN202997793U
Application number: CN 201220742254
Authority: CN
Inventors: 周黎民; 黄鹏程; 王伟
Original assignee: CSR Zhuzhou Electric Co Ltd
Current assignee: CRRC Zhuzhou Electric Co Ltd
Priority date: 2012-12-30
Filing date: 2012-12-30
Publication date: 2013-06-12
Anticipated expiration: 2022-12-30

Abstract

The utility model discloses a rolling bearing structure used for an explosion-isolating motor. The rolling bearing structure comprises a bearing outer cover, a rolling bearing, a bearing inner cover, an oil ring, an O-shaped ring, a sealing ring, a sealing ring cover plate, and an outer oil seal. The bearing outer cover and the bearing inner cover are fixed together by bolts. The rolling bearing is mounted between the bearing outer cover and the bearing inner cover. An anti-explosion surface is arranged on the bearing inner cover. The oil ring is mounted between the bearing outer cover and the rolling bearing. The outer oil seal is mounted under the bearing outer cover. An O-shaped ring groove is arranged at a contacting gap between the bearing outer cover and the oil ring. The O-shaped ring is mounted in an O-shaped ring groove. The sealing ring is mounted at a gap between the bearing outer cover and the outer oil sealing and is fixed by the sealing ring cover plate. The rolling bearing structure with a simple structure satisfies a requirement for explosion-isolating performance of the explosion-isolating motor and guarantees the lubrication performance of the bearing structure.

Description

A kind of explosion-proof motor rolling bearing structure

Technical field

The utility model relates to the internal structure of isolated form motor, is specifically related to a kind of explosion-proof motor rolling bearing structure.

Background technology

Explosion-proof motor is generally containing the coal seam explosion hazard colliery underground work of methane, work under bad environment, explosion separation motor is strict to flame proof, requiring explosion separation motor not have spark within it when section blasts emerges and causes lighting and exploding of external environment, and the explosion separation motor bearing arrangement is most important on the impact of explosion insulation performance, secondly, the greasy property of bearing arrangement is also to weigh the important indicator of its performance.

The utility model content

The purpose of this utility model is to provide a kind of explosion-proof motor rolling bearing structure, it can not only satisfy the flame proof requirement of explosion separation motor fully, can also effectively avoid the leakage of lubricating grease to guarantee the fully lubricated of bearing, and this bearing arrangement assembling and easy to use, bearing explosion insulation performance and the bearing lubrication performance of assurance explosion separation motor.

the technical solution adopted in the utility model is: a kind of explosion-proof motor rolling bearing structure, comprise bearing end cover, rolling bearing, internal bearing cover, oil ring, O shape circle, sealing ring, sealing ring cover plate and outer oil seal, described bearing end cover and internal bearing cover are bolted on together, rolling bearing is assemblied between bearing end cover and internal bearing cover, described internal bearing cover is provided with explosion-proof, oil ring is arranged between described bearing end cover and rolling bearing, outer oil seal is arranged on below described bearing end cover, the gap location that contacts with oil ring on described bearing end cover is provided with O shape ring recess, described O shape circle is arranged in described O shape ring recess, described sealing ring is arranged on the gap location between described bearing end cover and described outer oil seal, the sealing ring lid is fixed described sealing ring.

Further, the hermetically-sealed construction between described outer oil seal and bearing end cover is labyrinth seal structure.

The utility model has the advantage of: 1, increase by internal bearing cover the explosion insulation performance that explosion suppresion surface guarantees bearing arrangement; 2, the labyrinth seal structure that forms by bearing end cover and outer oil seal and sealing ring and O type circle are avoided the leakage of bearing grease, guarantee the greasy property of bearing arrangement.

Description of drawings

Fig. 1 is structural representation of the present utility model;

In figure, 1, outer oil seal; 2, sealing ring; 3, sealing ring cover plate; 4, bearing end cover; 5, O type circle; 6, oil ring; 7, rolling bearing; 8, internal bearing cover.

Embodiment

Further set forth the technical solution of the utility model below in conjunction with the drawings and specific embodiments.

as shown in Figure 1, a kind of explosion-proof motor rolling bearing structure, comprise bearing end cover 4, rolling bearing 7, internal bearing cover 8, oil ring 6, O shape circle 5, sealing ring 2, sealing ring cover plate 3 and outer oil seal 1, described bearing end cover 4 and internal bearing cover 8 are bolted on together, rolling bearing 7 is assemblied between bearing end cover 4 and internal bearing cover 8, described internal bearing cover 8 is provided with explosion-proof, oil ring 6 is arranged between described bearing end cover 4 and rolling bearing 7, outer oil seal 1 is arranged on described bearing end cover 4 belows, the gap location that contacts with oil ring 6 on described bearing end cover 4 is provided with O shape ring recess, described O shape circle 5 is arranged in described O shape ring recess, described sealing ring 2 is arranged on the gap location between described bearing end cover 4 and described outer oil seal 1, sealing ring cover plate 3 is fixing with described sealing ring 2.Its assembling process is: with bolt, the end cap of internal bearing cover 8 and whole bearing arrangement is fixed, refill and join rolling bearing 7, oil ring 6 and outer oil seal 1, then with bolt, the end cap of bearing end cover 4 and whole bearing arrangement is fixed, the sealing ring 2 of packing at last also covers with sealing ring cover plate 3.

As further execution mode of the present utility model, the hermetically-sealed construction between described outer oil seal and bearing end cover is labyrinth seal structure.

Principle of the present utility model is: 1, by increasing at internal bearing cover 8 explosion insulation performance that explosion suppresion surface guarantees bearing arrangement; 2, the labyrinth seal structure that forms by bearing end cover 4 and outer oil seal 1 and sealing ring 2 and O type circle 5 are avoided the leakage of bearing grease, guarantee the greasy property of bearing arrangement.

Above execution mode is only preferred implementation of the present utility model; those of ordinary skills do not break away from do under the enlightenment of the utility model essence and technology do not have novelty and creationary distortion and a retouching, all should be considered as within protection range of the present utility model.

Claims

1. explosion-proof motor rolling bearing structure, it is characterized in that, comprise bearing end cover, rolling bearing, internal bearing cover, oil ring, O shape circle, sealing ring, sealing ring cover plate and outer oil seal, described bearing end cover and internal bearing cover are bolted on together, rolling bearing is assemblied between bearing end cover and internal bearing cover, described internal bearing cover is provided with explosion-proof, oil ring is arranged between described bearing end cover and rolling bearing, outer oil seal is arranged on below described bearing end cover, the gap location that contacts with oil ring on described bearing end cover is provided with O shape ring recess, described O shape circle is arranged in described O shape ring recess, described sealing ring is arranged on the gap location between described bearing end cover and described outer oil seal, the sealing ring lid is fixed described sealing ring.

2. a kind of explosion-proof motor rolling bearing structure according to claim 1, is characterized in that, the hermetically-sealed construction between described outer oil seal and bearing end cover is labyrinth seal structure.