CN102518632B

CN102518632B - A kind of improper method contacting of back lining bearing back-up ring and set of rollers that prevents

Info

Publication number: CN102518632B
Application number: CN201110393000.9A
Authority: CN
Inventors: 范凌鹤; 侯丽袅; 卫雅静; 董晓红
Original assignee: LUOYANG JUCHUANG BEARING TECHNOLOGY CO LTD
Current assignee: LUOYANG JUCHUANG BEARING TECHNOLOGY CO LTD
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2016-05-25
Anticipated expiration: 2031-12-01
Also published as: CN102518632A

Abstract

The present invention relates to technical field of bearings, a kind of improper method contacting of milling train back lining bearing back-up ring and set of rollers that prevents is disclosed, on the back-up ring saddle contact-making surface contacting with saddle at back-up ring, and step surface of the position turning corresponding with set of rollers, this step surface, lower than the 0.1-2mm of the saddle contact-making surface of back-up ring, does not contact back-up ring in the radius of set of rollers work with saddle. The present invention can overcome the deficiency that prior art exists, make the mismachining tolerance transmission of saddle less than on back-up ring, can not so just that back-up ring distortion produces improper friction with set of rollers, not affect the normal use of back-up ring simultaneously yet, extend the service life of Sendzimir twenty-high mill backing cloth bearing.

Description

A kind of improper method contacting of back lining bearing back-up ring and set of rollers that prevents

Technical field

The present invention relates to technical field of bearings, be particularly useful for a kind of improper method contacting of milling train back lining bearing back-up ring and set of rollers that prevents of 20 roller sendzimir mills.

Background technology

At present, gloomy base Mil twenty-high mill backing cloth bearing, six covers are one group and are arranged on saddle in groups and use, (single bearing coordinates as shown in Figure 1 with the installation of saddle) in use. Be subject to the impact of the saddle accuracy of manufacture, can make bearing back-up ring time there is small warpage deformation in work, the one side that causes back-up ring to press close to set of rollers contacts with roller is improper. In the time of bearing working, the roller of rotation contacts with back-up ring face is improper, affects the formation of elasticity oil film, increases friction, the heat-dissipating of roller and back-up ring face, affects the normal use of bearing. Serious meeting causes the shortening in service life of Sendzimir twenty-high mill backing cloth bearing, even bearing damage.

Summary of the invention

For overcoming prior art deficiency, the invention provides a kind of improper method contacting of back lining bearing back-up ring and set of rollers that prevents, can make the mismachining tolerance transmission of saddle less than on back-up ring, so just can not make back-up ring distortion produce improper contact friction with set of rollers, not affect the normal use of back-up ring simultaneously yet.

For realizing goal of the invention as above, the present invention adopts following technical scheme:

A kind of improper method contacting of milling train back lining bearing back-up ring and set of rollers that prevents, in the back-up ring plane contacting with saddle at end ring, and step surface of the position turning corresponding with set of rollers, this step surface, lower than the back-up ring plane 0.1mm-2mm contacting with saddle, does not contact end ring in the radius of set of rollers work with saddle.

A kind of milling train back lining bearing back-up ring, comprise: the back-up ring plane contacting with bearing inner race, the back-up ring plane contacting with saddle, a step surface corresponding with set of rollers position is set in the back-up ring plane contacting with saddle, and between the back-up ring plane that this step surface and saddle contact, distance is 0.1mm-2mm.

Owing to adopting technical scheme as above, the present invention has following superiority:

A kind of improper method contacting of milling train back lining bearing back-up ring and set of rollers that prevents, can overcome the deficiency that prior art exists, making the mismachining tolerance transmission of saddle less than on back-up ring, can not be so just that back-up ring distortion produces improper friction with set of rollers, does not affect the normal use of back-up ring simultaneously yet. Extend the service life of Sendzimir twenty-high mill backing cloth bearing.

The present invention has overcome before application, and this rolling mill bearing is in rolling approximately 60,000 tons of steel of cycle approximately 100,000 tons of steel half amounts, and the bearing of this milling train 50% is because of roller end face and back-up ring friction, the technical problem losing efficacy in advance. After application the present invention, this rolling mill bearing is not found the phenomenon appearance of losing efficacy in advance because of roller and the improper contact friction of back-up ring so far rolling in the cycle.

Brief description of the drawings

Fig. 1 is the structural representation of Sendzimir twenty-high mill backing cloth bearing;

Fig. 2 a is the structural representation before Sendzimir twenty-high mill backing cloth bearing back-up ring improves;

Fig. 2 b is the structural representation after Sendzimir twenty-high mill backing cloth bearing back-up ring improves;

In figure: 1, end ring, 2, bearing inner race, 3, bearing outer ring, 4, set of rollers, 5, saddle, 6, step surface.

Detailed description of the invention

As shown in Fig. 1,2a, 2b: a kind of improper method contacting of milling train back lining bearing back-up ring and set of rollers that prevents, in the back-up ring plane contacting with saddle 5 at end ring 1, and step surface 6 of the position turning corresponding with set of rollers 4, this step surface 6, lower than the back-up ring plane 0.1mm-2mm contacting with saddle 5, does not contact with saddle 5 in the radius that end ring 1 is worked in set of rollers 4. At end ring 1 and step surface 6 of saddle 5 contact-making surface car, in the radius that end ring 1 is worked in set of rollers 4, do not contact with saddle 5, remainder still normally coordinates installation with the saddle 5 that blocks bearing outer ring 3. Thereby make the mismachining tolerance transmission of saddle 5 less than on end ring 1, so just can not make end ring 1 distortion and set of rollers 4 produce friction. Do not affect the normal use of end ring 1 simultaneously yet. As shown in Figure 2 b, i.e. milling train back lining bearing back-up ring after processing, comprise: the back-up ring plane contacting with bearing inner race, the back-up ring plane contacting with saddle, a step surface 6 corresponding with set of rollers 4 positions is set in the back-up ring plane contacting with saddle, and this step surface 6 is lower than the back-up ring plane 0.1mm-2mm contacting with saddle.

Claims

1. one kind prevents the improper method contacting of milling train back lining bearing back-up ring and set of rollers, it is characterized in that: be in the back-up ring plane contacting with saddle (5) at end ring (1), an and step surface of the position turning corresponding with set of rollers (4) (6), this step surface (6), lower than the back-up ring plane 0.1mm-2mm contacting with saddle (5), does not contact end ring (1) in the radius of set of rollers (4) work with saddle (5).

2. the milling train back lining bearing back-up ring of method as claimed in claim 1, it is characterized in that: comprising: the back-up ring plane contacting with bearing inner race, the back-up ring plane contacting with saddle, a step surface (6) corresponding with set of rollers (4) position is set in the back-up ring plane contacting with saddle, and between the back-up ring plane that this step surface (6) and saddle contact, distance is 0.1mm-2mm.