CN202402431U

CN202402431U - Retainer ring of twenty-high roll mill backing bearing

Info

Publication number: CN202402431U
Application number: CN2011204926839U
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: 2012-08-29
Anticipated expiration: 2021-12-01

Abstract

The utility model relates to the technical field of bearings, and discloses a retainer ring of a twenty-high roll mill backing bearing. The retainer ring of the twenty-high roll mill backing bearing includes a retainer ring plane in contact with a bearing inner ring, and a retainer ring plane in contact with a saddle, wherein a step surface (6) is arranged on the retainer ring plane in contact with the saddle, the position of the step surface (6) is corresponding to that of a roller group (4), and the distance between the step surface (6) and the retainer ring plane in contact with the saddle ranges from 0.1 mm to 2 mm. The retainer ring of the twenty-high roll mill backing bearing can overcome the shortages in the prior art, so that the processing errors of the saddle are not transmitted to the retainer ring. Therefore, the abnormal friction between the deformed retainer ring and the roller group is prevented, the retainer ring can be used normally, and the service life of the Sendzimir twenty-high roll mill backing bearing is prolonged.

Description

The twenty-high mill backing cloth bearing back-up ring

Technical field

The utility model relates to technical field of bearings, is particularly useful for a kind of twenty-high mill backing cloth bearing back-up ring of gloomy basic Mil's milling train.

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; The one side that causes back-up ring to press close to set of rollers contacts with roller is improper; When bearing working, the formation of elasticity oil film between roller and back-up ring face when this contact and influence is rotated makes roller and back-up ring face produce the normal use of friction, living heat affecting bearing.Serious meeting causes gloomy basic Mil's twenty-high mill backing cloth bearing to damage, and reduces the working life of bearing.

Summary of the invention

For overcoming the existing technology deficiency; The utility model provides a kind of twenty-high mill backing cloth bearing back-up ring; The machining error transmission that can make saddle is less than on the back-up ring; The fixation that so neither influences saddle can not make back-up ring distortion and set of rollers produce friction yet, does not influence the normally public of back-up ring simultaneously yet.

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

A kind of twenty-high mill backing cloth 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.

Owing to adopt aforesaid technological scheme, the utlity model has following superiority:

A kind of twenty-high mill backing cloth bearing back-up ring; Can overcome the deficiency that existing technology exists; The machining error transmission that makes saddle is less than on the back-up ring; So just can not make the back-up ring distortion, can not influence the formation of elasticity oil film between back-up ring and the set of rollers, avoid producing between set of rollers and the back-up ring improper friction.Do not influence simultaneously the normal use of back-up ring yet.

The utility model 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 twenty-high mill backing cloth bearing after improving;

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

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

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 twenty-high mill backing cloth bearing back-up ring; Comprise: the back-up ring plane that contacts with bearing inner race 2, 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, between the back-up ring plane that this step surface 6 contacts with saddle apart from being 0.1 mm-2mm.

Promptly at end ring 1 and step surface 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 avoid producing between set of rollers 4 and the end ring 1 improper friction because of the formation of elasticity oil film between end ring 1 deformation effect end ring 1 and the set of rollers 4 less than on the end ring 1.Do not influence simultaneously the normal use of end ring yet.Shown in Fig. 2 b.

Claims

1. twenty-high mill backing cloth bearing back-up ring; It is characterized in that: comprising: 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.