CN104343819A

CN104343819A - Multilayer rolling bearing

Info

Publication number: CN104343819A
Application number: CN201410615371.0A
Authority: CN
Inventors: 付娟
Original assignee: WUHAN BAONIXI TECHNOLOGY Co Ltd
Current assignee: WUHAN BAONIXI TECHNOLOGY Co Ltd
Priority date: 2014-11-05
Filing date: 2014-11-05
Publication date: 2015-02-11

Abstract

The invention relates to a multilayer rolling bearing, which comprises an inner ring, at least one middle ring, an outer ring and at least two rolling layers, wherein the rolling layers comprises an inner rolling layer and an outer rolling layer, each rolling layer comprises a rolling body and a retainer, each retainer is used for containing rolling bodies so that the positions between the rolling bodies are relatively fixed, two rolling bodies positioned in the inner rolling layer form a row in a side-by-side way, a plurality of rows of rolling bodies are distributed in each retainer, and the axial lines of the side-by-side rolling bodies are parallel to the axial line of the inner rolling layer. The multilayer rolling bearing has the advantages that the number of stress cycle times and the number of rolling times of the rolling bodies in the rolling process are reduced, so the service life is prolonged, and the bearing safety is improved.

Description

A kind of multilayer rolling bearing

Technical field

The present invention relates to a kind of rolling bearing, particularly relate to a kind of multilayer rolling bearing.

Background technique

Rolling bearing in use, lost efficacy owing to just creating when a lot of reasons causes its performance index not reach usage requirement or damaged.Common failure mode has fatigue flake, wearing and tearing, plastic deformation, burn into burn, electro erosion, retainer damage etc.

Fatigue has many types, and for rolling bearing, mainly abutment is tired.The each rolling element surface of rolling bearing lasso is under the repeated action of contact stress, and its rolling surface metal is that point-like or the phenomenon of getting off that scales off are called fatigue flake from metallic matrix.Spot corrosion is also because fatigue of materials causes a kind of fatigue phenomenon, but geomery is very little, will form fatigue flake after spot corrosion expansion.For the rolling bearing of general Long-Time Service, rolling element and inside and outside circle are under load effect, great circulating contact stress is had between surface, thus make the working surface of bearing (rolling element and interior, circle raceway face) that fatigue equivalent (pit) occur, coating metal flaking can be made time serious, form pit, so that lose normal ability to work.

Summary of the invention

In view of this, be necessary to provide a kind of multilayer rolling bearing that can destroy the above-mentioned defect solving prior art existence of starting with from fatigue equivalent.

A kind of multilayer rolling bearing, comprises inner ring, at least one mesosphere, outer ring and at least two-layer rolling layer; Rolling layer comprises interior rolling layer and outer rolling layer; Wherein interior rolling layer is between inner ring and mesosphere, and outer rolling layer is between mesosphere and outer ring;

Each layer rolling layer all comprises rolling element, retainer; Wherein retainer is for placing rolling element, and makes the position between rolling element relatively fixing; Structure is in a row to be side by side arranged in two rolling elements of rolling layer, and many rows are distributed in retainer, rolling element axis side by side and interior rolling layer axis being parallel.

The invention has the beneficial effects as follows: on the basis of common rolling bearing, add one or more rolling layer, thus reduce the rolling number of times of rolling element on Internal and external cycle in rolling process, reduce stress-number of cycles, thus improve the working life of bearing.In addition; this rolling bearing has multiple rolling layer; when one or more rolling element or retainer etc. break down and cannot work wherein; remaining rolling layer can work on; improve the Security of bearing; reduce and change number of times, be inconvenient to the essential industry occasion of changing and repairing at bearing, the loss that maintenance down causes can be avoided.

Accompanying drawing explanation

Fig. 1 is the rolling bearing schematic diagram having two rolling layers;

Fig. 2 is rolling layer schematic diagram of the present invention;

Fig. 3 is the rolling bearing schematic diagram having three rolling layers;

Wherein 10-inner ring, 20-mesosphere, 21-first mesosphere, 22-second mesosphere, 30-outer ring, rolling layer in 41-, 42-outer rolling layer, rolling layer in the middle of 43-, rolling element in 50-, rolling element in 51-, 52-outer rolling body, rolling element in the middle of 53-, 60-retainer.

Embodiment

Multilayer rolling bearing of the present invention is introduced in detail below in conjunction with the drawings and specific embodiments.

The invention provides a kind of multilayer rolling bearing, comprise inner ring 10, at least one mesosphere 20, outer ring 30 and at least two-layer rolling layer 40.Adopt the structure of multiple rolling layer 40 effectively can reduce the rolling number of times of rolling element 50 on Internal and external cycle in rolling process, reduce stress-number of cycles, thus improve the working life of bearing.

Rolling layer 40 comprises interior rolling layer 41 and outer rolling layer 42; Wherein interior rolling layer 41 is between inner ring 10 and mesosphere 20, and outer rolling layer 42 is between mesosphere 20 and outer ring 30.

Each layer rolling layer 40 all comprises rolling element 50, retainer 60; Wherein retainer 60 is for placing rolling element 50, and makes the position between rolling element 50 relatively fixing.Structure separate between each rolling layer can ensure that one or more rolling element 50 or retainer 60 etc. break down when cannot work wherein, and remaining rolling layer 40 still can work, and then improves the Security of bearing, reduces the replacing number of times of bearing.

Structure is in a row to be side by side arranged in two rolling elements 50 of rolling layer 41, and many rows are distributed in retainer 60, rolling element 50 axis side by side and interior rolling layer 41 axis being parallel.Adopt the arrangement of dual row of rolling bodies 50, effectively can reduce the rolling number of times of rolling element 50, and disperse the stress that rolling element 50 bears.Preferably, rolling element 50 is evenly distributed in retainer, not only can reduce rolling number of times, dispersive stress, can also ensure rolling element 50 uniform force, alleviates rolling element 50 loss.

Optionally, rolling element 50 can be ball-type or cylindrical.

Optionally, rolling layer 40 also comprises middle rolling layer 43; Described mesosphere 20 comprises the first mesosphere 21 and the second mesosphere 22; Wherein, rolling layer 43 is between the first mesosphere 21 and the second mesosphere 22.

Preferably, the rolling element 51 being arranged in rolling layer 41 adopts mono-cylindrical structure, and the outer rolling body 53 being arranged in outer rolling layer 42 adopts spheroidal structure.

The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention.This multi-layer structure can also be applied to ball bearing, roller bearing, deep groove ball bearing, roller bearing, in the various bearing such as needle bearing.Every utilize description of the present invention to do equivalent structure or the conversion of equivalent flow process, or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.

Claims

1. a multilayer rolling bearing, comprises inner ring (10), at least one mesosphere (20), outer ring (30) and at least two-layer rolling layer (40);

Rolling layer (40) comprises interior rolling layer (41) and outer rolling layer (42); Wherein interior rolling layer (41) is positioned between inner ring (10) and mesosphere (20), and outer rolling layer (42) is positioned between mesosphere (20) and outer ring (30);

Each layer rolling layer (40) all comprises rolling element (50), retainer (60); Wherein retainer (60) is for placing rolling element (50), and makes the position between rolling element (50) relatively fixing;

Structure is in a row to be side by side arranged in two rolling elements (50) of rolling layer (41), and many rows are distributed in retainer (60), rolling element (50) axis side by side and interior rolling layer (41) axis being parallel.

2. multilayer rolling bearing as claimed in claim 1, is characterized in that: described rolling element (50) is cylindrical or spherical.

3. multilayer rolling bearing as claimed in claim 1 or 2, is characterized in that: described rolling layer (40) also comprises middle rolling layer (43); Described mesosphere (20) comprises the first mesosphere (21) and the second mesosphere (22); Wherein, rolling layer (43) is positioned between the first mesosphere (21) and the second mesosphere (22).