CN106812794A

CN106812794A - A kind of tandem composite bearing

Info

Publication number: CN106812794A
Application number: CN201710147537.4A
Authority: CN
Inventors: 薛良安; 袁翔飞; 周引春
Original assignee: ZHEJIANG SF OILLESS BEARING CO Ltd
Current assignee: ZHEJIANG SF OILLESS BEARING CO Ltd
Priority date: 2017-03-13
Filing date: 2017-03-13
Publication date: 2017-06-09

Abstract

The invention discloses a kind of tandem composite bearing.A kind of simple structure, easy to manufacture is aimed to provide, single sliding bearing or single rolling bearing and defect can be overcome the shortcomings of, can simultaneously meet rotating speed high and handling a kind of readily tandem composite bearing.It includes rolling bearing and sliding bearing, it is characterized in that inlayed in the inner ring of rolling bearing being fixed with sliding bearing, the working face of sliding bearing is the bore area of sliding bearing；Or shroud ring is fixed with sliding bearing on the outer ring of rolling bearing, the working face of sliding bearing is the outer round surface of sliding bearing.Advantages of the present invention：One is that can be competent at more high-revolving application scenario；Two is the occasion that can adapt to need frequently dismantle axle, can improve the operating efficiency of dismounting；Three can be achieved on non-refuelling or few operational effect refueled.

Description

A kind of tandem composite bearing

Technical field

The present invention relates to the structure of bearing, more particularly to a kind of tandem composite bearing.

Background technology

Bearing is a kind of important parts in plant equipment.Its major function is the mechanical rotary body of support, reduces it Coefficient of friction in motion process, and ensure its rotating accuracy.By the difference of motor element frictional property, bearing can be divided into rolling Bearing and the major class of sliding bearing two.Rolling bearing advantage includes that frictional resistance is small, and power consumption is small, and mechanical efficiency is high, easily starts, It is adapted to high-revolving application, but handling are less susceptible to；Sliding bearing advantage includes stable working, carries pressure greatly, axle handling It is particularly easy to, but frictional resistance is relatively large, is not suitable for running at high speed under the conditions of oil-free.Needed with rotating speed bearing high many The mechanical position of often handling, such as high-speed bearing testing machine, equipment gearbox, power transmission shaft etc., sliding bearing handling are needed again Easily but high-revolving requirement cannot be competent at, rolling bearing can meet high-revolving requirement but handling are difficult.So this two classes axle Hold all can not very well while meet rotating speed high and handling readily require.

The content of the invention

It is an object of the invention to provide a kind of simple structure, easy to manufacture, single sliding bearing or single rolling can be overcome The deficiency and defect of bearing, can simultaneously meet rotating speed high and handling a kind of readily tandem composite bearing.

In order to reach above-mentioned requirements, a kind of tandem composite bearing of the invention, it includes rolling bearing and sliding bearing, It is characterized in that inlayed in the inner ring of rolling bearing being fixed with sliding bearing, the working face of sliding bearing is the endoporus of sliding bearing Surface；Or shroud ring is fixed with sliding bearing on the outer ring of rolling bearing, the working face of sliding bearing is the outer of sliding bearing Circular surfaces.

The working face of the sliding bearing has self-lubricating function.

Described self-lubricating function is that have self-lubricating material layer in the working face coating of sliding bearing or sintering.

The rolling element of the rolling bearing is spheroid or cylindrical roller or taper roller or needle roller or sphere rolling Son or spiral roller.

Tandem composite bearing according to said structure design, because the frictional resistance of sliding bearing is more general than rolling bearing Want more than order of magnitude greater, so in the tandem composite bearing, sliding bearing is rolled the rotation of low speed is made comparisons Bearing is making the rotation of very high speed.The upper limit of the rotary speed of the tandem composite bearing is higher than single rolling bearing.This is multiple Sympodium is held with following three big advantages：One is that can be competent at more high-revolving application scenario；Two is that can adapt to need frequently dismounting The occasion of axle, can improve the operating efficiency of dismounting；Three can be achieved on non-refuelling or few operational effect refueled.

Brief description of the drawings

Fig. 1 be rolling bearing inner ring in be inlaid with the tandem composite bearing front view of sliding bearing；

Fig. 2 is the tandem composite bearing installment state figure when in use of Fig. 1；

Fig. 3 is the tandem composite bearing front view that shroud ring has sliding bearing on the outer ring of rolling bearing.

In figure：1. rolling bearing；2. sliding bearing；3. the inner ring of rolling bearing；4. the endoporus of sliding bearing；5. Self-lubricating material layer；6. rolling element；7. axle；8. the outer ring of rolling bearing；9. outer seat.

Specific embodiment

The invention will be further described below in conjunction with the accompanying drawings and by embodiment.

Fig. 1 for rolling bearing inner ring in be inlaid with sliding bearing tandem composite bearing structural representation.From figure In find out, it include rolling bearing 1 and sliding bearing 2, inlayed by interference fit in the inner ring 3 of rolling bearing and be fixed with cunning Dynamic bearing 2, the working face of sliding bearing 2 is the surface of endoporus 4 of sliding bearing.The working face of the sliding bearing 2 has self-lubricating Function, it is to coat or sinter on the working face of sliding bearing 2 to have self-lubricating material layer 5, and described self-lubricating material is as gathered Tetrafluoroethene, polyformaldehyde, polyimides, graphite, molybdenum bisuphide etc., the general material such as copper that may also be plain bearing are closed Gold etc..The rolling element 6 of the rolling bearing 1 is spheroid, or cylindrical roller or taper roller or needle roller or ball Face roller or spiral roller.When using, the endoporus 4 of sliding bearing is enclosed within axle 7, relative sliding friction occurs and work with axle 7 Make, the external diameter of sliding bearing is engaged with the endoporus of rolling bearing, the outer ring 8 of rolling bearing is then fixed on seat 9 outside such as Fig. 2 institutes Show.Axle 7 can make relative rotary motion with rolling bearing 1 and sliding bearing 2 simultaneously.

In addition to said structure, can be with as shown in figure 3, shroud ring be fixed with sliding bearing on the outer ring 8 of rolling bearing 2, the working face of sliding bearing 2 is the outer round surface of sliding bearing 2, and being coated on the working face of sliding bearing 2 or being sintered has certainly Lubricating layer 5.

Claims

1. a kind of tandem composite bearing, it includes rolling bearing and sliding bearing, it is characterized in that in the inner ring of rolling bearing Inlay and be fixed with sliding bearing, the working face of sliding bearing is the bore area of sliding bearing；Or in the outer ring of rolling bearing Upper shroud ring is fixed with sliding bearing, and the working face of sliding bearing is the outer round surface of sliding bearing.

2. a kind of tandem composite bearing according to claim 1, it is characterized in that the working face of the sliding bearing have from Lubricating function.

3. a kind of tandem composite bearing according to claim 2, it is characterized in that described self-lubricating function is to slide The working face coating of bearing or sintering have self-lubricating material layer.

4. a kind of tandem composite bearing according to claim 1, it is characterized in that the rolling element of the rolling bearing is ball Body or cylindrical roller or taper roller or needle roller or spherical roller or spiral roller.