CN102518632A

CN102518632A - Method for preventing check ring of back-up bearing from abnormally contacting roller group

Info

Publication number: CN102518632A
Application number: CN2011103930009A
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: 2012-06-27
Anticipated expiration: 2031-12-01
Also published as: CN102518632B

Abstract

The invention relates to the technical field of bearings, and discloses a method for preventing a check ring of a back-up bearing from abnormally contacting a roller group. According to the method, a step surface corresponding to the roller group is turned on a check ring-saddle contact surface where the check ring is contacted with a saddle, and is 0.1-2mm lower than the check ring-saddle contact surface, so that the check ring is not contacted with the saddle in a working radius range of the roller group. The method can overcome defects of the prior art, and a machining error of the saddle is not transferred to the check ring, so that the check ring cannot be deformed and cannot be abnormally contacted with the roller group; meanwhile, the normal use of the check ring is not influenced, and the service life of the back-up bearing of a Sendzimir twenty-roller mill.

Description

A kind of improper method that contacts 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 that contacts of milling train back lining bearing back-up ring and set of rollers that prevents of 20 roller sendzimir mills.

Background technique

At present, gloomy basic Mil's twenty-high mill backing cloth bearing, six covers are one group and are installed on the saddle in groups and use (single bearing cooperates as shown in Figure 1 with the installation of saddle) in use.Receive the influence of saddle accuracy of manufacturing, can make bearing back-up ring small warpage deformation takes place in when work, the one side that causes back-up ring to press close to set of rollers contacts with roller is improper.When bearing working, the roller of rotation contacts with the back-up ring face is improper, influences the formation of elasticity oil film, increases the friction of roller and back-up ring face, living heat, influences the normal use of bearing.Serious meeting causes the shortening in working life of Senjimier twenty-high mill backing cloth bearing, even damage of bearings.

Summary of the invention

For overcoming the existing technology deficiency; The present invention provides a kind of improper method that contacts of back lining bearing back-up ring and set of rollers that prevents; The machining error transmission that can make saddle is less than on the back-up ring; So just can not make the back-up ring distortion produce improper contact friction, not influence the normal use of back-up ring simultaneously yet with set of rollers.

For realizing aforesaid goal of the invention, the present invention adopts following technological scheme:

A kind of improper method that contacts of milling train back lining bearing back-up ring and set of rollers that prevents; Be on the back-up ring plane that end ring contacts with saddle; And step surface of the position turning corresponding with set of rollers; This step surface is lower than the back-up ring plane 0.1 mm-2mm that contacts with saddle, and end ring is not contacted with saddle in the radius of set of rollers work.

A kind of milling train back lining bearing back-up ring; Comprise: the back-up ring plane that contacts with bearing inner race, the back-up ring plane that contacts with saddle; With on the back-up ring plane of saddle contact a step surface corresponding with the set of rollers position is set, between the back-up ring plane that this step surface contacts with saddle apart from being 0.1 mm-2mm.

Because adopt aforesaid technological scheme, the present invention has following superiority:

A kind of improper method that contacts of milling train back lining bearing back-up ring and set of rollers that prevents; Can overcome the deficiency that existing technology exists; The machining error transmission that makes saddle so just can not be that the back-up ring distortion produces improper friction with set of rollers less than on the back-up ring, does not influence the normal use of back-up ring simultaneously yet.Prolong the working life of Senjimier twenty-high mill backing cloth bearing.

The present invention has overcome before application, and this roller-mill bearing is when half measures about 60,000 tons of steel at about 100,000 tons of steel of the cycle of rolling, and the bearing of this milling train 50% is because of roller end face and back-up ring friction, the technical problem that lost efficacy in advance.After using the present invention, this roller-mill bearing is not found in the cycle to shift to an earlier date the failure phenomenon appearance because of roller and the improper contact friction of back-up ring rolling so far.

Description of drawings

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

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

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

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

Embodiment

Shown in Fig. 1,2a, 2b: a kind of improper method that contacts of milling train back lining bearing back-up ring and set of rollers that prevents; Be on end ring 1 and back-up ring plane that saddle 5 contacts; And position turning step surface 6 corresponding with set of rollers 4; This step surface 6 is lower than the back-up ring plane 0.1 mm-2mm that contacts with saddle 5, and end ring 1 is not contacted with saddle 5 in the radius of set of rollers 4 work.Promptly at end ring 1 and step surface 6 of saddle 5 surface of contact cars, end ring 1 is not contacted in the radius of set of rollers 4 work with saddle 5, remaining part still normally cooperates installation with the saddle that blocks bearing outer ring 35.Thereby the machining error transmission that makes saddle 5 so just can not make end ring 1 distortion and set of rollers 4 produce friction less than on the end ring 1.Do not influence simultaneously the normal use of end ring 1 yet.Shown in Fig. 2 b; Milling train back lining bearing back-up ring after promptly processing; Comprise: the back-up ring plane that contacts with bearing inner race, the back-up ring plane that contacts with saddle; With on the back-up ring plane of saddle contact a step surface 6 corresponding with set of rollers 4 positions is set, this step surface 6 is lower than the back-up ring plane 0.1 mm-2mm that contacts with saddle.

Claims

1. one kind prevents the improper method that contacts of milling train back lining bearing back-up ring and set of rollers; It is characterized in that: be on end ring (1) and back-up ring plane that saddle (5) contacts; An and position turning step surface (6) corresponding with set of rollers (4); This step surface (6) is lower than the back-up ring plane 0.1 mm-2mm that contacts with saddle (5), and end ring (1) is not contacted with saddle (5) in the radius of set of rollers (4) work.

2. the milling train back lining bearing back-up ring of method according to claim 1; Comprise: the back-up ring plane that contacts with bearing inner race, the back-up ring plane that contacts with saddle; With on the back-up ring plane of saddle contact a step surface (6) corresponding with set of rollers (4) position is set, between the back-up ring plane that this step surface (6) contacts with saddle apart from being 0.1 mm-2mm.