CN202023839U

CN202023839U - Low-noise open type self-aligning roller bearing

Info

Publication number: CN202023839U
Application number: CN2011201249831U
Authority: CN
Inventors: 樊海亮; 王愿愿
Original assignee: HUANGSHI RENBEN BEARING CO Ltd
Current assignee: HUANGSHI RENBEN BEARING CO Ltd
Priority date: 2011-04-26
Filing date: 2011-04-26
Publication date: 2011-11-02
Anticipated expiration: 2021-04-26

Abstract

The utility model relates to an improvement technique for a bearing which is a machinery foundation component, in particular to a low-noise open-type self-aligning roller bearing. The self-aligning roller bearing is provided with an inner ring and an outer ring. A copper retainer and a plurality of rollers are arranged between the inner ring and the outer ring, and three oil filling holes and a circle of oil groove are arranged on the wall surface of the outer ring. The self-aligning roller bearing is characterized in that: a. the middle part of the inner wall of the copper retainer is provided with an annular boss; b. the length of the roller is designed to be 17.8mm; and c. the wall surface of the oil groove on the outer ring is the arc surface, and the depth of the oil groove is 0.6mm. The self-aligning roller bearing solves the problems in the existing bearings of the same kind that the service life is short, the loading capacity is poor, and the noise is high. The low-noise open-type self-aligning roller bearing is mainly used for a main shaft bearing of a permanent magnet synchronous tractor in a tractor driving system of an elevator.

Description

A kind of low noise open type selfaligning roller bearing

(1) technical field: the utility model relates to the improvement technology of machine foundation component bearing, especially a kind of low noise open type selfaligning roller bearing.

(2) background technique: be used for the main shaft bearing that lift machine drives system at present, its structure includes inner ring 8 and outer ring 1, copper cage 5 and some rollers 4 are installed between Internal and external cycle, and seal ring 6, spacer ring 7 in also being provided with between copper cage 5 and inner ring 8 has three oil holes 3 on the wall of outer ring, each oil hole outer end design has trapezoidal oil groove 2, referring to Fig. 1, the shortcoming that the bearing of this structure exists is:

1, spacer ring and seal ring during this structure has, the wrapping angle of this bearing is bigger, and roller length is shorter, is generally 16.3mm, on the basis of same widths, causes the integrated carrying ability of bearing lower, and bearing life is shorter.And operation is various, increases cost of production.

2, this inside configuration has middle spacer ring, and there is seal ring the outside, is easy to generate friction in the bearing operation process, and bearing vibration value influence the usability of bearing, and noise is big than higher.

3, the oil groove on this structure outer ring is trapezoidal oil groove, produces stress in the Vehicle Processing process, forms high stress in angular edge and concentrates, and becomes tired source, causes peeling off, and shortens bearing working life.

4, this structure has the heat that the sealing configuration bearing produces in operation process, makes the bearing locking easily because there be stopping of seal ring in time to dispel the heat, and influences the usability of bearing.

(3) summary of the invention: it is short working life with bearing that the purpose of this utility model will solve existing lift machine exactly, and bearing capacity is poor, and the problem that noise is big provides a kind of low noise open type selfaligning roller bearing.

Concrete scheme of the present utility model is: improve with bearing at existing lift machine, it has inner ring and outer ring, copper cage and some rollers are installed between Internal and external cycle, on the wall of outer ring, have three oil holes, reach a circle oil groove, it is characterized in that: the middle part design of the described copper cage inwall of a. has annular boss; B. described roller length is designed to 17.8mm; C. curved of the oil groove wall on the described outer ring, the oil groove degree of depth are 0.6mm.

The utlity model has following advantage:

1, reduce the chance that produces noise: spacer ring in the nothing (is in fact that middle spacer ring and copper cage are made as one in the utility model, promptly replaced middle spacer ring) by the annular boss in the retainer, no seal ring, gap cancellation between original inner ring centre rib and the middle spacer ring, contact cancellation between the little rib of inner ring and the seal ring, the gap that only has retainer and centre rib, the gap between the little rib of roller and inner ring.Guarantee that bearing does not have because of interfering generation noise and vibration between the accessory in operation process;

2, increase bearing load carrying capacity and working life: reduce contact angle, increase the roller length size, make bearing load carrying capacity bring up to 1.6 times

3, optimize structure, reduce cost of production: spacer ring in the nothing, no seal ring makes bearing structure simple, parts procurement quantity reduces, and shortens the procurement cycle of accessory, and the manufacture cycle of product, has improved the manufacturing efficiency of bearing greatly.

4, strengthen the bearing heat dispersion: spacer ring in the nothing, no seal ring, the friction cancellation between original roller and the middle spacer ring, the friction cancellation has reduced the generation of thermal source between little rib of inner ring and the seal ring, does not have seal ring simultaneously, has strengthened the heat dispersion of bearing greatly.

5, bearing outer ring adopts the arc oil groove, and edge increases the chamfer angle technique local stress relieving and produces, and avoids the formation of edge stress, reduces the oil groove degree of depth simultaneously, effectively improves the wall thickness at this place, outer ring.Make the bearing reliability promote.

(4) description of drawings:

Fig. 1 is the structural representation of existing lift machine with bearing;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is that the A of Fig. 2 is to view;

Fig. 4 is the plan view of copper cage;

Fig. 5 is the A-A sectional view of Fig. 4.

Among the figure: 1-outer ring, the trapezoidal oil groove of 2-, 3-oil hole, 4-roller, 5-copper cage, 6-seal ring, spacer ring among the 7-, 8-inner ring, 9-arc oil groove, 10-annular boss.

(5) embodiment:

Referring to Fig. 2,3,4,5, the utlity model has inner ring 8 and outer ring 1, copper cage 5 and some rollers 4 are installed between Internal and external cycle 8 and 1, on 1 wall of outer ring, have three oil holes 3, reach a circle oil groove 9, it is characterized in that: the middle part design of described copper cage 5 inwalls of a. has annular boss 10; B. described roller 4 Design of length are 17.8mm; C. on the described outer ring 1 curved of oil groove 9 walls, oil groove 9 degree of depth are 0.6mm.

Claims

1. low noise open type selfaligning roller bearing, have inner ring and outer ring, copper cage and some rollers are installed between Internal and external cycle, on the wall of outer ring, have three oil holes, reach a circle oil groove, it is characterized in that: the middle part design of the described copper cage inwall of a. has annular boss; B. described roller length is designed to 17.8mm; C. curved of the oil groove wall on the wall of described outer ring, the oil groove degree of depth are 0.6mm.