CN202531636U

CN202531636U - Ball bearing

Info

Publication number: CN202531636U
Application number: CN 201220187389
Authority: CN
Inventors: 陈蕾; 夏纪勇
Original assignee: Hunan Guangyi Sci & Tech Co Ltd; Changsha University
Current assignee: Hunan Guangyi Sci & Tech Co Ltd; Changsha University
Priority date: 2012-04-28
Filing date: 2012-04-28
Publication date: 2012-11-14
Anticipated expiration: 2022-04-28

Abstract

A ball bearing comprises a detachable upper inner ring, a spherical roller and a lower outer ring. The upper inner ring is provided with an inner circular surface which can be assembled with a shaft and is further provided with an upper plane which can contact with a shaft shoulder so as to bear radial force. The lower outer ring is provided with an outer circular surface which can be assembled with an inner bore of a shaft sleeve and is further provided with a lower plane which can contact with a stepped check ring of the shaft sleeve so as to bear the radial force. A spherical racewayI which contacts with an outer circular surface of the spherical roller is arranged on the outer side of the lower portion of the upper inner ring. A spherical racewayII which contacts with an outer circular surface of the spherical roller is arranged on the inner side of the lower portion of the lower outer ring. The spherical roller is fixed through the spherical racewayI and the spherical racewayII. The ball bearing is simple and compact in structure, can not only bear the radial force but also the axial force, can be used as a supporting component of a planet device, can carry out not only revolution but also rotation, and is applied to various poor working condition along with impact. In addition, the ball bearing has the advantages of being low in manufacturing cost, long in service life and wide in application range, can avoid bearing shear stress, and not needing a cage.

Description

A kind of ball bearing

Technical field

The utility model relates to a kind of ball bearing, especially relates to a kind of ball bearing that can bear axial force again can bearing radial force.

Background technique

Ball bearing is also claimed ball bearing, is in being installed in by spherical alloy steel ball in the middle of steel ring and the outer rim and constitute, and is a kind ofly to reduce frictional force and the bearing of raising machine power transmission efficiency in the power transmission process with means of rolling.

Existing ball bearing is divided into two big types: one type is mainly used in bearing radial force, like deep groove ball bearing etc.; Another kind of, be mainly used in and bear axial force, like thrust ball bearing, angular contact thrust ball bearing etc.

In machinery, need and to bear the bearing of axial force again by bearing radial force.Commonly used is tapered roller bearing now.But tapered roller bearing, manufacture cost is higher, and after the wearing clearance change greatly, vibration also becomes very big, and working life is short.

General ball bearing is typically provided with ball retainer, can play fixing ball, reduce the effect of surface friction drag.In many heavy load occasions; Retainer is destroyed easily, especially when bearing during as the support unit of planet device (more badly tilting again and swing), because bearing had not only revolved round the sun but also rotation; Retainer is under action of centrifugal force; Constantly impact roller, thereby cause retainer to be destroyed, influence the working life of bearing then.

Patent CN101737423A discloses a kind of ball bearing of 4 contacts; Comprise bearing inner race, ball and bearing outer ring; Ball is arranged between bearing inner race and the bearing outer ring, on bearing inner race and bearing outer ring, is equipped with ring raceway, and every ring raceway all has contact at 2 with each ball.But there is following defective in it: because ball and raceway are to contact, surface of contact is little, and bearing capacity is lower; Because Internal and external cycle is radially to install, bearing is when receiving axial force, and ball must bear bigger shearing stress, and it is bigger to wear and tear, and damages easily; And often can't keep preferably that surface of contact bears axial force or radial force after the wearing and tearing, vibrate greatlyyer, lack working life; In addition, keep 4 contacts, raceway and spin must accurately be made and assembling, and manufacture cost is higher; So this class bearing can only be made the pivoting support of low-speed running.

The model utility content

The technical problem that the utility model will solve is, overcomes the above-mentioned defective that existing technology exists, and provides a kind of and can bear axial force again by bearing radial force; Simple in structure, low cost of manufacture, rate of fault is low; Long service life is not born the ball bearing of the no retainer of shearing stress.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of ball bearing; Comprise detachable last inner ring, spherical roller, following outer ring; Last inner ring be provided with can with the inner headed face of axle assembling, last inner ring also is provided with and can contacts the last plane with bearing radial force with the shaft shoulder; Following outer ring be provided with can with the periphery of axle sleeve endoporus assembling; Be beneficial to the axle sleeve radial location; Following outer ring also is provided with and can contacts the lower plane with bearing radial force with the ladder back-up ring of axle sleeve; The outside, last inner ring bottom is provided with and the contacted ball-track I of spherical roller periphery, and following outer ring upper inner also is provided with and the contacted ball-track II of spherical roller periphery, and spherical roller is fixed through ball-track I and ball-track II.

Further, said upward ball-track I, following ball-track II are 1/4 sphere diameter with the line length that contacts of spherical roller periphery.

During use, the ball bearing of the utility model is installed on the axle below, ball bearing is installed on the axle of tape spool shoulder through last inner ring; Ball bearing is located at the axle sleeve top; Ball bearing is installed in the endoporus place of axle sleeve, and the following outer ring of ball bearing contacts with axle sleeve endoporus hole wall, is beneficial to radial location and bearing radial force; Also can be provided with the ladder back-up ring on the axle sleeve is beneficial at the axial restraint ball bearing; After the aforesaid operations installation, axle can rotate with respect to axle sleeve, and ball bearing can bear axle and the two radial force and axial force of axle sleeve.

The utility model is simple in structure, compact, can bear axial force again by bearing radial force, can be used as the support unit of planet device; But not only can revolve round the sun but also rotation, be applicable to various with the abominable working conditions of impacting, low cost of manufacture; Long service life; Applied widely, can avoid bearing shearing stress, need not to use retainer.

Description of drawings

Fig. 1 is the utility model one embodiment's a structural representation.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

With reference to Fig. 1, present embodiment comprises detachable last inner ring 1, spherical roller 2, following outer ring 3; Last inner ring 1 be provided with can with the inner headed face 1D of axle assembling; Last inner ring 1 also is provided with the last plane 1C that can contact with the shaft shoulder with bearing radial force; Following outer ring 3 be provided with can with the periphery 3D of axle sleeve endoporus assembling; Following outer ring 3 also is provided with and can contacts the lower plane 3C with bearing radial force with the ladder back-up ring of axle sleeve, and the outside, last inner ring 1 bottom is provided with and the contacted ball-track I of spherical roller 2 peripheries 1A; Following outer ring 3 upper inner are provided with and the contacted ball-track II of spherical roller 2 peripheries 3A; Spherical roller 2 rolls between year ball-track I 1A and ball-track II 3A.

Plane 3E is the non-stress face on last inner ring 1 periphery 1B, last inner ring 1 lower plane 1E, following outer ring 3 inner headed faces, 3 B, the following outer ring 3.Last inner ring 1 periphery 1B outwards moves, and following outer ring 3 inner headed faces, 3 B inwardly move, and can increase the axial force supporting plane, improves axial carrying capacity, otherwise then reduces axial carrying capacity.Last inner ring 1 lower plane 1E is to moving down, and plane 3 E upwards move on the following outer ring 3, can increase the radial force supporting plane, improve radially bearing capacity, otherwise then reduce radially bearing capacity.

In the present embodiment; Last inner ring 1 periphery 1B aligns with following outer ring 3 inner headed faces, 3 B; Plane 3E aligns on last inner ring 1 lower plane 1E and the following outer ring 3; Last ball-track I 1A, following ball-track II 3A are 1/4 sphere diameter with the line length that contacts of spherical roller 2, and axial carrying capacity is with radially bearing capacity is almost equal.

Claims

1. ball bearing comprises detachable last inner ring, spherical roller, outer ring down, and last inner ring is provided with the inner headed face that can assemble with axle, and last inner ring also is provided with and can contacts the last plane with bearing radial force with the shaft shoulder; Following outer ring be provided with can with the periphery of axle sleeve endoporus assembling; Following outer ring also is provided with and can contacts the lower plane with bearing radial force with the ladder back-up ring of axle sleeve; It is characterized in that; The outside, last inner ring bottom is provided with and the contacted ball-track I of spherical roller periphery, and following outer ring upper inner also is provided with and the contacted ball-track II of spherical roller periphery, and spherical roller is fixed through ball-track I and ball-track II.

2. ball bearing according to claim 1 is characterized in that, said upward ball-track I, following ball-track II are 1/4 sphere diameter with the line length that contacts of spherical roller periphery.