CN204175801U

CN204175801U - A kind of structure preventing bearing inner race from skidding

Info

Publication number: CN204175801U
Application number: CN201420000194.0U
Authority: CN
Inventors: 葛世东; 孙北奇; 于晓凯; 程俊景
Original assignee: Luoyang Bearing Science and Technology Co Ltd
Current assignee: Luoyang Bearing Research Institute Co Ltd
Priority date: 2014-01-02
Filing date: 2014-01-02
Publication date: 2015-02-25
Anticipated expiration: 2024-01-02

Abstract

A kind of structure preventing bearing inner race from skidding, relate to technical field of bearings, comprise bearing outer ring (1), bearing inner race (2), retainer (3) and rolling element (4), bearing inner race (2) is provided with in the inside of bearing outer ring (1), the internal surface of described bearing inner race (2) is square structure, described rolling element (4) is arranged in the raceway between bearing outer ring (1) internal surface and bearing inner race (2) outer surface, and a plurality of rolling element (4) even partition is opened by described retainer (3); The utility model effectively prevents axle and the slippage problems of bearing inner race under large load effect, and bearing inner race and axle adopt Spielpassung simultaneously, not only simplify bearing mounting or dismounting technique, and reduce bearing user cost.

Description

A kind of structure preventing bearing inner race from skidding

[technical field]

The utility model relates to technical field of bearings, and specifically the utility model relates to a kind of structure preventing bearing inner race from skidding.

[background technique]

Known, the cooperation between Machine Design middle (center) bearing, axle and bearing support generally coordinates employing interference fit according to movement parts, and static element coordinates the principle adopting Spielpassung, to ensure that effective combination of movement parts and bearing fit face ensures the normal delivery of motion.

For the bearing that inner ring rotates, traditional bearing structure inner ring is cylndrical surface, axle is also cylndrical surface, two faces generally adopt interference fit to prevent from skidding between bearing inner race and axle, the advantage of this structure is Internal and external cycle is that cylinder revolution processing is more convenient, but in heavy engineering machinery or mining machinery field, under bearing is usually operated in very large axis or Radial Loads, be out of shape under local function to prevent bearing and cause skidding between bearing inner race and axle, bearing generally needs the interference fit adopting very large magnitude of interference with axle, easily will there is two problems in this, first axle and inner ring magnitude of interference too conference make bearing assemble difficulty, the method of heating lasso or freezing axle generally can only be adopted to realize, heating outer ring easily makes bearing ring tempering, surface hardness reduces, affect bearing working life, there is corrosion in the freezing axle that easily makes, axle is caused to occur defect, the fault of off-axis may be there is, in addition, magnitude of interference too conference makes bearing ring internal stress increase, and also there will be the situation of lasso fracture when serious, ensures that the positive connection performance of bearing inner race and axle is the basic demand of those skilled in the art so solve under case of heavy load.

[summary of the invention]

In order to overcome the deficiency in background technique, the utility model discloses a kind of structure preventing bearing inner race from skidding, by bearing inner race 2 internal surface is set to square structure, square structure is set to the match mounting surface of sympodium of bearing inner race 2 internal surface, the utility model effectively prevents axle and the slippage problems of bearing inner race under large load effect, bearing inner race and axle adopt Spielpassung simultaneously, not only simplify bearing mounting or dismounting technique, and reduce bearing user cost.

For realizing above-mentioned model utility object, the utility model adopts following technological scheme:

A kind of structure preventing bearing inner race from skidding, comprise bearing outer ring, bearing inner race, retainer and rolling element, bearing inner race is provided with in the inside of bearing outer ring, the internal surface of described bearing inner race is square structure, described rolling element is arranged in the raceway between bearing outer ring internal surface and bearing inner race outer surface, and a plurality of rolling element even partition is opened by described retainer.

Owing to have employed technique scheme, the utility model has following superiority:

The structure preventing bearing inner race from skidding described in the utility model, by bearing inner race 2 internal surface is set to square structure, square structure is set to the match mounting surface of sympodium of bearing inner race 2 internal surface, the utility model effectively prevents axle and the slippage problems of bearing inner race under large load effect, bearing inner race and axle adopt Spielpassung simultaneously, not only simplify bearing mounting or dismounting technique, and reduce bearing user cost.

[accompanying drawing explanation]

Fig. 1 is structural representation of the present utility model;

In the drawings: 1, bearing outer ring; 2, bearing inner race; 3, retainer; 4, rolling element.

[embodiment]

Can explain the utility model in more detail by the following examples, the utility model is not limited to the following examples;

Prevent the design method that bearing inner race skids, comprise the bearing body of bearing outer ring 1, bearing inner race 2, retainer 3 and rolling element 4 composition, the internal surface of bearing inner race 2 is set to square structure by described method, is set to square structure with the match mounting surface of sympodium of bearing inner race 2 internal surface; The mounting surface of bearing inner race 2 internal surface and axle is Spielpassung; Described Spielpassung 0-30um [S1].

The described structure preventing bearing inner race from skidding by reference to the accompanying drawings described in 1, comprise bearing outer ring 1, bearing inner race 2, retainer 3 and rolling element 4, bearing inner race 2 is provided with in the inside of bearing outer ring 1, the internal surface of described bearing inner race 2 is square structure, described rolling element 4 is arranged in the raceway between bearing outer ring 1 internal surface and bearing inner race 2 outer surface, and a plurality of rolling element 4 even partition is opened by described retainer 3.

Implement the structure preventing bearing inner race from skidding described in the utility model, by the internal surface of bearing inner race 2 is set to square structure, be set to square structure with the match mounting surface of sympodium of bearing inner race 2 internal surface, the mounting surface of bearing inner race 2 internal surface and axle is Spielpassung; Described Spielpassung is 0-30um, and due to the physical constraint at square four angles, bearing inner race is difficult to occur relative sliding with axle under heavy loads, thus effectively solves heavily loaded lower bearing and axle coordinates the relevant technologies difficult problem produced; The utility model effectively prevents axle and the slippage problems of bearing inner race under large load effect, and bearing inner race and axle adopt Spielpassung simultaneously, not only simplify bearing mounting or dismounting technique, and reduce bearing user cost.

The non-detailed portion of the utility model is prior art.

The embodiment selected in this article in order to open goal of the invention of the present utility model, currently thinks to be suitable for, but it is to be understood that the utility model is intended to comprise all changes belonging to the embodiment within the scope of this design and model utility and improvement.

Claims

1. the structure preventing bearing inner race from skidding, comprise bearing outer ring (1), bearing inner race (2), retainer (3) and rolling element (4), it is characterized in that: be provided with bearing inner race (2) in the inside of bearing outer ring (1), the internal surface of described bearing inner race (2) is square structure, described rolling element (4) is arranged in the raceway between bearing outer ring (1) internal surface and bearing inner race (2) outer surface, a plurality of rolling element (4) even partition is opened by described retainer (3), the mounting surface of described bearing inner race (2) internal surface and axle is Spielpassung, described Spielpassung 0-30um.