CN201584844U

CN201584844U - Sealing structure of horizontal motor bearing

Info

Publication number: CN201584844U
Application number: CN2010203012046U
Authority: CN
Inventors: 贺玉民; 张芹; 王敏
Original assignee: Xiangtan Electric Manufacturing Co Ltd
Current assignee: Xiangtan Electric Manufacturing Co Ltd
Priority date: 2010-01-22
Filing date: 2010-01-22
Publication date: 2010-09-15
Anticipated expiration: 2020-01-22

Abstract

The utility model relates to a sealing structure of a horizontal motor bearing, which comprises a rotating shaft, a bearing outer cover, a lock nut, a check washer, an oil thrower wheel, a bearing sleeve and a bearing, wherein the bearing, the oil thrower wheel, the check washer, the lock nut and the bearing outer cover are sequentially arranged on the rotating shaft from inside to outside, a groove is arranged on the inner side of the bearing outer cover, a boss with the end part extending into the groove is arranged on the outer side of the lock nut, the minimum clearance between the inner wall of the groove and the boss is 1mm, a seal labyrinth structure is formed between the inner wall of the groove and the boss, and the clearance between the oil thrower wheel and the bearing sleeve is 2-2.5mm. The sealing structure has easy processing and assembly, reliable quality and good sealing performance.

Description

A kind of horizontal machine bearing seal structure

Technical field

The utility model relates to a kind of bearing seal structure, especially relates to a kind of horizontal machine bearing seal structure.

Background technology

Existing horizontal machine bearing seal structure generally is not with the sealing labyrinth, sealing effectiveness is poor, bearing is short useful life, if outside bearing, place labyrinth ring, though can improve the sealing property of bearing to a certain extent, processing and assembling be difficulty, troublesome poeration, and operational reliability is poor, breaks down easily.

Chinese patent 200610024426.6 discloses a kind of motor bearings hermetically-sealed construction of non-contacting seal, be equipped with throw rijng and oil scraper ring in the rotating shaft, be equipped with shaft-cup on the electric motor end cap, form a sealing labyrinth structure between throw rijng, shaft-cup and the oil scraper ring, but this sealing labyrinth structure is higher to the processing and the matching requirements of parts, processing and assembling difficulty, difficult quality guarantee, sealing property are still not good enough.

The utility model content

The purpose of this utility model is to overcome the above-mentioned defective that prior art exists, and provides a kind of processing and assembling easily, reliable in quality, the horizontal machine bearing seal structure of good seal performance.

The technical solution of the utility model is: it comprises rotating shaft, bearing end cover, locking nut, stop washer, disc, bearing holder (housing, cover) and bearing, bearing, disc, stop washer, locking nut and bearing end cover are located in the rotating shaft from the inside to the outside successively, the bearing end cover inboard is provided with groove, the locking nut outside is provided with the end and stretches into the interior boss of groove, in order to process with easy to assembly, minimum clearance between groove inwall and the boss is 1mm, form the sealing labyrinth structure between groove inwall and the boss, the gap between disc and the bearing holder (housing, cover) is 2～2.5mm.

The utility model processing and assembling easily, good seal performance can be trapped in the dust of motor outside and moisture content in the gap between groove inwall and boss, and not enter motor internal; Disc can be with useful lubricant grease retaining in bearing, waste oil then can be thrown to outside the bearing along the gap of disc between disc and bearing holder (housing, cover), thereby help improving the lubricant effect of bearing, the auxiliary waste oil of removing in the bearing improves bearing useful life.

Description of drawings

Fig. 1 is the utility model example structure schematic diagram.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

With reference to accompanying drawing, present embodiment comprises rotating shaft 1, bearing end cover 2, locking nut 3, stop washer 4, disc 5, bearing holder (housing, cover) 6 and bearing 7, bearing 7, disc 5, stop washer 4, locking nut 3 and bearing end cover 2 are located in the rotating shaft 1 from the inside to the outside successively, bearing end cover 2 inboards are provided with groove 8, locking nut 3 outsides are provided with the end and stretch into boss 9 in the groove 8, in order to process with easy to assembly, minimum clearance between groove 8 inwalls and the boss 9 is 1mm, form the sealing labyrinth structure between groove 8 inwalls and the boss 9, the gap between disc 5 and the bearing holder (housing, cover) 6 is 2～2.5mm.

Claims

1. horizontal machine bearing seal structure, comprise rotating shaft, bearing end cover, locking nut, stop washer, disc, bearing holder (housing, cover) and bearing, it is characterized in that, bearing, disc, stop washer, locking nut and bearing end cover are located in the rotating shaft from the inside to the outside successively, the bearing end cover inboard is provided with groove, the locking nut outside is provided with the end and stretches into the interior boss of groove, minimum clearance between groove inwall and the boss is 1mm, form the sealing labyrinth structure between groove inwall and the boss, the gap between disc and the bearing holder (housing, cover) is 2～2.5mm.