CN203537128U

CN203537128U - Vertical motor bearing having pre-tightening function

Info

Publication number: CN203537128U
Application number: CN201320396509.3U
Authority: CN
Inventors: 刘剑锋
Original assignee: Wuxi Teco Electric and Machinery Co Ltd
Current assignee: Wuxi Teco Electric and Machinery Co Ltd
Priority date: 2013-07-04
Filing date: 2013-07-04
Publication date: 2014-04-09
Anticipated expiration: 2023-07-04

Abstract

The utility model relates to a vertical motor bearing having the pre-tightening function and an iron chip thereof. The vertical motor bearing comprises an inner cover, an outer cover, a bearing and a bracket. The inner cover, the outer cover and the bearing are sequentially sleeved on a main shaft from inside to outside. The bracket is arranged between the inner cover and the outer cover to fix the bearing among the inner cover, the outer cover and the bracket. The inner cover, the bracket and the outer cover are fixedly connected together through a bolt. Between the inner cover and the bearing, the main shaft is sleeved with an inner oil shield. Between the outer cover and the bearing, the main shaft is sleeved with an outer oil shield. A clasp is arranged between the outer oil shield and the bearing. The outer oil shield is connected to the main shaft through a fixed bolt. A spring is arranged between the inner cover and the bearing. According to the technical scheme of the utility model, the problems in the prior art that caused by the slipping condition of a bearing arranged at the non-fixed side of a three-phase high/low-voltage vertical motor, the motor is vibratory and larger in noise and the bearing is higher in temperature rise and shorter in service life, can be solved.

Description

A kind of vertical type motor bearing with pretension function

Technical field

The utility model relates to a kind of vertical type generator, particularly relates to a kind of vertical type motor bearing with pretension function.

Background technology

In three-phase high and low pressure vertical machine running, because motor bearings on-fixed side does not stress (or stressed smaller), cause motor starting and running middle (center) bearing generation skidding, thereby cause motor vibrations, noise to become large, bearing temperature rise uprises, and bearing life reduces.

At present main Xie Decision scheme is that the centrifugal force producing by motor running prevents that on-fixed side bearing from skidding, but at motor starting, stop and turning round in, because centrifugal force constantly changes with operational situation, cannot guarantee that bearing keeps required minimum pretightning force always, thereby cause bearing to produce intermittent skidding; So existing, need another kind of more reliable and can continue the scheme of the required pretightning force of maintenance bearing.

Utility model content

The utility model is exactly in order to address the above problem, overcome of the prior art in the existing problem of vertical motor bearing, the utility model provides a kind of vertical type motor bearing with pretension function to satisfy the demands.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of vertical type motor bearing with pretension function, comprise inner cap, enclosing cover, bearing and bracket, described inner cap, enclosing cover and bearing are sheathed on main shaft from inside to outside successively, bracket is arranged between inner cap and enclosing cover bearing is fixed on to inner cap, between enclosing cover and bracket, described inner cap, between bracket and enclosing cover, be bolted to connection, on main shaft between described inner cap and bearing, be arranged with inner grease retainer, on main shaft between enclosing cover and bearing, be arranged with outer oil catch, between outer oil catch and bearing, be provided with clasp, outer oil catch is connected on main shaft by set bolt, it is characterized in that, between described inner cap and bearing, be also provided with spring.

Above-mentioned a kind of vertical type motor bearing with pretension function, is characterized in that, covers in described on the contact-making surface with bearing and is provided with installing hole, and described spring is arranged in installing hole.

Above-mentioned a kind of vertical type motor bearing with pretension function, is characterized in that the spring that described spring is compressive state.

Above-mentioned a kind of vertical type motor bearing with pretension function, is characterized in that, described set bolt is counterbore set bolt.

The beneficial effects of the utility model are: solved three-phase high and low pressure vertical machine in use because motor on-fixed side bearing skids, thereby the motor vibrations producing, noise become large, bearing temperature rise uprises, the problem that bearing life reduces.

Accompanying drawing explanation

Fig. 1 is cutaway view of the present utility model.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Referring to Fig. 1, a kind of vertical type motor bearing with pretension function, comprise inner cap 200, enclosing cover 300, bearing 400 and bracket 500, inner cap 200, enclosing cover 300 and bearing 400 are sheathed on main shaft 100 from inside to outside successively, bracket 500 is arranged between inner cap 200 and enclosing cover 300 bearing 400 is fixed on to inner cap 200, between enclosing cover 300 and bracket 500, inner cap 200, between bracket 500 and enclosing cover 300, by bolt 510, be fixedly connected with, on main shaft 100 between inner cap 200 and bearing 400, be arranged with inner grease retainer 210, on main shaft 100 between enclosing cover 300 and bearing 400, be arranged with outer oil catch 310, between outer oil catch 310 and bearing 400, be provided with clasp 320, outer oil catch 310 is connected on main shaft 100 by set bolt 311.

Between inner cap 200 and bearing 400, be also provided with spring 600, on inner cap 200 with on the contact-making surface of bearing 400, be provided with installing hole 220, spring 600 is arranged in installing hole 220, and spring 600 spring that is compressive state.Spring 600 is fixed between internal bearing cover 200 and bearing 400 with compressive state, and bearing 400 is applied to a constant axial pre tightening force, prevents that bearing from skidding.

In one of them optimal way of the present utility model, set bolt 311 is counterbore set bolt.

More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. the vertical type motor bearing with pretension function, comprise inner cap, enclosing cover, bearing and bracket, described inner cap, enclosing cover and bearing are sheathed on main shaft from inside to outside successively, bracket is arranged between inner cap and enclosing cover bearing is fixed on to inner cap, between enclosing cover and bracket, described inner cap, between bracket and enclosing cover, be bolted to connection, on main shaft between described inner cap and bearing, be arranged with inner grease retainer, on main shaft between enclosing cover and bearing, be arranged with outer oil catch, between outer oil catch and bearing, be provided with clasp, outer oil catch is connected on main shaft by set bolt, it is characterized in that, between described inner cap and bearing, be also provided with spring.

2. a kind of vertical type motor bearing with pretension function according to claim 1, is characterized in that, covers in described on the contact-making surface with bearing and is provided with installing hole, and described spring is arranged in installing hole.

3. according to a kind of vertical type motor bearing with pretension function described in claim 1 or 2, it is characterized in that the spring that described spring is compressive state.

4. a kind of vertical type motor bearing with pretension function according to claim 3, is characterized in that, described set bolt is counterbore set bolt.