CN204200835U

CN204200835U - Square hole solid matter needle bearing

Info

Publication number: CN204200835U
Application number: CN201420661301.4U
Authority: CN
Inventors: 李志萌; 贾喜良; 李震; 张秀真; 李楠; 汪静; 鹿海英; 李勇; 方翠羽; 马跃华; 李幸芝
Original assignee: JINING JINGYI BEARING CO Ltd
Current assignee: JINING JINGYI BEARING CO Ltd
Priority date: 2014-11-07
Filing date: 2014-11-07
Publication date: 2015-03-11
Anticipated expiration: 2024-11-07

Abstract

A kind of square hole solid matter needle bearing, comprise outer ring, inner ring and rolling element, rolling element two ends are round end, and rolling element is closely packed in the raceway of outer ring inner headed face and inner ring periphery, and the inner ring inner hole section shape of inner ring is the excessive square of foursquare arc.There is straight mouth at two ends, outer ring, and the middle raceway both sides of inner ring periphery are diameter shrinkage part, and this diameter shrinkage part has grooving; Have the packing ring of chip ring, packing ring abuts in the end straight mouth end face of outer ring and inner ring diameter shrinkage part end face stopping rolling element, and in the grooving of inner ring, place back-up ring, back-up ring is the sheet annulus elastomer having diagonal cut joint, and back-up ring is resisted against on packing ring outer side surface.The utility model avoids the relative sliding of axle and bearing inner race, and bearing capacity is strong, and good seal performance, long service life, is convenient to the installing/dismounting of bearing because bearing inner race endoporus is square hole shape.

Description

Square hole solid matter needle bearing

Technical field

The utility model relates to a kind of square hole solid matter needle bearing, is mainly applicable to the agricultural tillage machinery that rotating speed is lower, as disk plow, disc harrow, plastic mulching machine, sowing machine etc.

Background technique

Farm machinery bearing used generally works under environment compares mal-condition, and bear radial load large, rotation torque is large, because ball bearing bearing capacity is less, bearing ring wall is thin, and under the radial load of alternation, easily occur that early fatigue destroys, bearing life is lower.Traditional brearing bore is circular, very strict to the machining accuracy of transmission shaft and brearing bore, increase processing cost on the one hand, when gap is large a little on the other hand, bearing can slide on axle, and interference fit is not easy to again dismounting increases I&M cost with assembling.

Summary of the invention

The purpose of this utility model is to provide a kind of square hole solid matter needle bearing, solves bearing being subject to the defect easily producing relative sliding compared with axle during high pulling torque and bearing inner race; The defect of otherwise address poor sealing performance.

The purpose of this utility model realizes as follows: this square hole solid matter needle bearing, comprise outer ring, inner ring and rolling element, rolling element is closely packed in the raceway of outer ring inner headed face and inner ring periphery, the inner ring inner hole section shape of inner ring is the excessive square of foursquare arc, stress when arc transition can reduce heat treatment is concentrated, square hole can closely cooperate with square axle, axle and bearing inner race is avoided to produce relative sliding, thus decrease mechanical failure, and greatly extend the working life of bearing.Adopt without retainer design, improve the bearing capacity of bearing rolling element solid matter therebetween, between inner ring and outer ring, utilize the viscosity of lithium grease to solve the lubrication of bearing, improve the life-span of bearing.

There is straight mouth at two ends, outer ring, and the middle raceway both sides of inner ring periphery are diameter shrinkage part, and this diameter shrinkage part has grooving; Have the packing ring of chip ring, packing ring abuts in the end straight mouth end face of outer ring and inner ring diameter shrinkage part end face stopping rolling element, and in the grooving of inner ring, place back-up ring, back-up ring is the sheet annulus elastomer having diagonal cut joint, and back-up ring is resisted against on packing ring outer side surface.Because agricultural machinery is generally operational in moister soil or irrigation canals and ditches, the lubrication of bearing and antirust be a problem, the design of bearing two ends two packing ring, two back-up ring, packing ring and back-up ring all through and blackouts or Bluing treatment prevents from getting rusty.The Internal and external cycle of bearing is not with oil hole, namely two packing ring, two back-up ring play and block the effect that rolling element prevents rolling element axial float, again can sealed in grease in an airtight space, stop entering of bearing exterior earth, Sha Shui, prevent the loss of lubricating grease in bearing, sealability is fine.

Rolling element two ends are round end, to reduce the friction with packing ring.

The utility model avoids the relative sliding of axle and bearing inner race, and bearing capacity is strong, good seal performance.The early fatigue easily occurred under the radial load of alternation can be avoided to destroy, thus reach the effect of life-saving; Bearing uses to a certain degree, even if when reaching lifetime limitation, because bearing inner race endoporus is square hole shape, is convenient to the installing/dismounting of bearing.

Accompanying drawing explanation

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

Fig. 2 is the plan view of inner ring.

Fig. 3 is the left view of inner ring.

Embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, the utility model comprises outer ring 1, inner ring 2 and rolling element 3, rolling element 3 two ends are round end, and rolling element 3 is closely packed in the raceway of outer ring 1 inner headed face and inner ring 2 periphery, and inner ring endoporus 6 sectional shape of inner ring 2 is the excessive square of foursquare arc.There is straight mouth at two ends, outer ring 1, and the middle raceway both sides of inner ring 2 periphery are diameter shrinkage part, and this diameter shrinkage part has grooving; There is the packing ring 5 of chip ring, packing ring 5 abuts in the end straight mouth end face of outer ring 1 and inner ring 2 diameter shrinkage part end face stopping rolling element 3, in the grooving of inner ring 2, place back-up ring 4, back-up ring 4 is the sheet annulus elastomers having diagonal cut joint, and back-up ring 4 is resisted against on packing ring 5 outer side surface.

Claims

1. a square hole solid matter needle bearing, comprises outer ring, inner ring and rolling element, and rolling element is closely packed in the raceway of outer ring inner headed face and inner ring periphery, it is characterized in that: inner ring endoporus (6) sectional shape of inner ring (2) is the excessive square of foursquare arc.

2. square hole solid matter needle bearing according to claim 1, is characterized in that: there is straight mouth at outer ring (1) two ends; The middle raceway both sides of inner ring (2) periphery are diameter shrinkage part, and this diameter shrinkage part has grooving; There is the packing ring (5) of chip ring, packing ring (5) abuts in the end straight mouth end face of outer ring (1) and inner ring (2) diameter shrinkage part end face stopping rolling element (3), back-up ring (4) is placed in the grooving of inner ring (2), back-up ring (4) is the sheet annulus elastomer having diagonal cut joint, and back-up ring (4) is resisted against on packing ring (5) outer side surface.

3 .square hole solid matter needle bearing according to claim 1, is characterized in that: rolling element (3) two ends are round end.