CN104454975A

CN104454975A - Retainer-free rolling bearing

Info

Publication number: CN104454975A
Application number: CN201410621736.0A
Authority: CN
Inventors: 李震; 李志萌; 李健; 马跃华; 李幸芝; 李勇; 方翠羽; 李楠; 张秀真; 汪笑梅; 汪静; 王超; 张海涛; 鹿海英; 李娜
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: 2015-03-25

Abstract

The invention relates to a retainer-free rolling bearing. The retainer-free rolling bearing comprises an outer ring, rolling bodies and an inner plastic ring, wherein the plurality of rolling bodies are arranged on the circumferential surface of an inner raceway of the outer ring in a fitting manner, the inner plastic ring is supported in a circular hole which is formed in an inner side bus of all rolling bodies, a small rolling body is arranged between two adjacent rolling bodies, the small rolling body is arranged at the outer side and/or the inner side of the adjacent rolling body, the small rolling body on the outer side is tangential to the circumferential surface of the rolling body and the inner raceway of the outer ring, and the small rolling body on the inner side is tangential to the outer circumferential surface of the rolling body and the inner plastic ring. According to the retainer-free rolling bearing, the small rolling bodies play a role of the retainer among the rolling bodies and are used for separating the rolling bodies, no retainer is needed, and the manufacturing cost of the bearing is reduced; the bottleneck that the traditional retainer window beam cannot be minimized can be eliminated, so that the quantity of the rolling bodies is increased, and the load is increased; the adjustable diameter of the small rolling body is large, so that the adjustable range of the quantity of the rolling bodies is enlarged, and the application range of the bearing is enlarged; the retainer is saved, so that the silence performance of the bearing is greatly improved.

Description

Full type rolling bearing

Technical field

The present invention relates to a kind of full type rolling bearing, be applicable in light car, heavy-duty freight car, engineering truck, engineering machinery etc., low, high speed class usage requirement.

Background technique

At present, rolling element is the bearing of ball or needle roller, and except full pin packaging shaft holds, other bearing all needs retainer to keep, limits the motion of rolling element substantially.Generally, the manufacture of retainer, is first make thin-walled materials in the tube by punching stretch steel plate or car tubulation material, then obtains required fenestra and window beam by punching press.Due to the difficulty manufacture of mould and the instability of punching press fenestra, it is yielding in stamping process to add thin-wall pipes, causes retainer manufacturing process cost high and easily goes out waste product, once becoming the weakness of bearing mnanufacture.So, the defect that the bearing with retainer exists: is because the existence of retainer itself increases the manufacture cost of bearing; Two is the needle roller limited amount because retainer reasons in structure causes bearing in-built, and needle roller quantity is limited by retainer and non-adjustable; Three is that noise is bigger than normal in the running for bearing.

Summary of the invention

The object of this invention is to provide a kind of full type rolling bearing, save retainer, thus reduce bearing mnanufacture cost, increase needle roller quantity to improve load, needle roller quantity adjustable extent is large, improves the quiet performance of bearing.

The object of the invention is to realize as follows: this full type rolling bearing, comprise outer ring, rolling element and interior plastic ring, on the interior raceway circumferential surface that some rolling element laminating layouts are enclosed outside, plastic ring in supporting in the circular hole that side bus is formed in all rolling elements, interior plastic ring mainly plays a supportive role, when preventing from packing, rolling element is scattered, and will remove when bearing is installed; At rolling element, little rolling element is set between any two, little rolling element is arranged on outside or the inner side of adjacent rolling elements, or in the inner side and outer side of adjacent rolling elements, little rolling element is all set, the little rolling element in outside and rolling element, raceway circumferential surface is tangent in outer ring, and the little rolling element of inner side and rolling element, interior plastic ring outer peripheral surface are tangent.By selecting the little rolling element of different-diameter, the arranging density of rolling element can be changed to adapt to application during different loads.During design, optimize the diameter calculating of raceway, rolling element, little rolling element in outer ring and the calculating of final circular gap.Adopt special tooling or smear the method for lubricating grease, rolling element and little rolling element being implanted outer ring by a graded, is inserted in interior plastic ring, all rolling elements are freely rotated, interlock and not coming off from outer ring raceway mutually.

Rolling element is cylinder needle roller.

The invention has the beneficial effects as follows: (1) little rolling element serves as the effect of retainer between rolling element, is separated by rolling element, does not need retainer, reduce bearing mnanufacture cost; (2) eliminate the bottleneck that original retainer window beam can not be too small, thus add rolling element quantity, improve load; (3) little rolling element adjustable diameter is large, and rolling element quantity adjustable extent is increased, and bearing Applicable scope increases; (4) eliminate retainer, substantially increase the quiet performance of bearing.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of a kind of structure of the present invention.

The schematic diagram of Fig. 2 another kind of structure of the present invention.

The schematic diagram of Fig. 3 the third structure of the present invention.

Embodiment

With reference to Fig. 1, the present invention includes outer ring 1, rolling element 2 and interior plastic ring 4, rolling element 2 is cylinder needle roller, some rolling element 2 laminatings are arranged and are enclosed on the interior raceway circumferential surface of 1 outside, plastic ring 4 in supporting in the circular hole that side bus is formed in all rolling elements 2, at rolling element 2, little rolling element 3 is set between any two, little rolling element 3 is arranged on outside and the inner side of adjacent rolling elements 2, the little rolling element 3 in outside is tangent with raceway circumferential surface in rolling element 2, outer ring 1, and the little rolling element 3 of inner side and rolling element 2, interior plastic ring 4 outer peripheral surface are tangent.

With reference to Fig. 2, the present invention includes outer ring 1, rolling element 2 and interior plastic ring 4, rolling element 2 is cylinder needle roller, some rolling element 2 laminatings are arranged and are enclosed on the interior raceway circumferential surface of 1 outside, plastic ring 4 in supporting in the circular hole that side bus is formed in all rolling elements 2, arrange little rolling element 3 between any two at rolling element 2, little rolling element 3 is arranged on the inner side of adjacent rolling elements 2, and little rolling element 3 and rolling element 2, interior plastic ring 4 outer peripheral surface are tangent.

With reference to Fig. 3, the present invention includes outer ring 1, rolling element 2 and interior plastic ring 4, rolling element 2 is cylinder needle roller, some rolling element 2 laminatings are arranged and are enclosed on the interior raceway circumferential surface of 1 outside, plastic ring 4 in supporting in the circular hole that side bus is formed in all rolling elements 2, arrange little rolling element 3 between any two at rolling element 2, little rolling element 3 is arranged on the outside of adjacent rolling elements 2, and little rolling element 3 is tangent with raceway circumferential surface in rolling element 2, outer ring 1.

Claims

1. a full type rolling bearing, comprise outer ring, rolling element and interior plastic ring, on the interior raceway circumferential surface that some rolling element laminating layouts are enclosed outside, plastic ring in supporting in the circular hole that side bus is formed in all rolling elements, it is characterized in that: at rolling element (2), little rolling element (3) is set between any two, little rolling element (3) is arranged on outside or the inner side of adjacent rolling elements (2), or in the inner side and outer side of adjacent rolling elements (2), little rolling element (3) is all set, little rolling element (3) and the rolling element (2) in outside, outer ring (1) interior raceway circumferential surface is tangent, little rolling element (3) and the rolling element (2) of inner side, interior plastic ring (4) outer peripheral surface is tangent.

2. full type rolling bearing according to claim 1, is characterized in that: rolling element (2) is cylinder needle roller.