CN107288997A

CN107288997A - Bearing unit

Info

Publication number: CN107288997A
Application number: CN201610228381.8A
Authority: CN
Inventors: 王海; 孟宪伟
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2016-04-13
Filing date: 2016-04-13
Publication date: 2017-10-24

Abstract

The invention discloses a bearing unit which comprises a first bearing and a second bearing which are arranged in the axial direction, wherein the first bearing comprises a first inner ring, the second bearing comprises a second inner ring which is arranged side by side with the first inner ring in the axial direction, the second inner ring is provided with a platform part protruding towards the first inner ring, the first inner ring is provided with a matching part positioned on the radial outer side of the platform part, a detachable fastener is arranged on the platform part, the matching part is provided with a blocking part, and the detachable fastener prevents the blocking part from moving towards the direction far away from the second inner ring. The first inner ring and the second inner ring are axially limited by the detachable fasteners, so that the bearing component is convenient to operate and cannot be damaged.

Description

Bearing unit

Technical field

The present invention relates to technical field of bearings, more particularly to the connection for preventing adjacent bearing from producing axial displacement Structure.

Background technology

As shown in figure 1, a kind of existing bearing unit includes the He of clutch shaft bearing 1 being arranged side by side in the axial direction Second bearing 2.Clutch shaft bearing 1 includes the first outer ring 11, the first inner ring 12 and positioned at the first outer ring 11 and the Some first rolling elements 13 between one inner ring 12.Second bearing 2 includes the second outer ring 21, the second inner ring 22 And some second rolling elements 23 between the second outer ring 21 and the second inner ring 22.Wherein, the first outer ring 11 and the location and installation of the second outer ring 21 in same housing 3.One locating snap ring 4 is by the first inner ring 12 and second Circle 22 is connected, so that clutch shaft bearing 1, second bearing 2 and housing 3 are connected as a single entity.

During specific assembling, the outer ring 11,21 of clutch shaft bearing 1 and second bearing 2 is successively pressed into housing 3, connect And the inner assembly (the second inner ring 22, the second rolling element 23 and the second retainer) of second bearing 2 is enclosed on work Load onto, then will press-fit the first outer ring 11, the housing 3 of the second outer ring 21 is inserted in, then by first axle The inner assembly (the first inner ring 12, the first rolling element 13 and the first retainer) for holding 1 is put into, and finally compression stops It is put into the first inner ring 12 of clutch shaft bearing 1, is pushed into locating snap ring 4 with frock, until locating snap ring after rotating ring 4 4 block the first inner ring 12, the groove 5 of the inner side of the second inner ring 22.

In existing scheme, two bearings 1,2 and housing 3 are held together by locating snap ring 4, it is convenient The carrying of whole bearing unit, installation and removal, but have the following disadvantages：

1. locating snap ring easily scratches internal diameter when passing through inner ring；

2. the installation of locating snap ring needs special frock, waste time and energy；

3. mounted locating snap ring is difficult to take out, causes dismounting bearing very difficult, be easily caused whole bearing Scrapping for unit, that is, allow to dismounting, can also there is secondary injury to bearing, and in unloading process, Risk with injury operating personnel.

Accordingly, it is desirable to provide a kind of improved bearing unit is to solve the above problems.

The content of the invention

The problem of present invention is solved is to provide a kind of bearing unit conveniently installed and dismantled.

To solve the above problems, the present invention is adopted the following technical scheme that：A kind of bearing unit, is included in axle The clutch shaft bearing and second bearing set up, clutch shaft bearing include the first inner ring, second bearing include with The second inner ring that first inner ring is arranged side by side in the axial direction, second inner ring has towards in first The platform part of protrusion is enclosed, first inner ring has positioned at the auxiliary section of the platform part radial outside, institute State and dismountable fastener is installed in platform part, there is stop part on the auxiliary section, it is described detachable Fastener prevent the stop part from being directed away from the direction movement of the second inner ring.

Preferably, the stop part extends from the end of the auxiliary section towards the platform part, so that A receiving space is formed between the auxiliary section and the platform part.

Preferably, form dismountable fastener is installed and diametrically run through in the platform part Through hole.

Preferably, dismountable fastener extends into the receiving space.

Preferably, the through hole has multiple and circumferentially spaced.

Preferably, dismountable fastener is trip bolt, and the through hole is screwed hole.

Preferably, it is provided with handle hole on the trip bolt.

Preferably, first inner ring is provided with the first groove in radially outer, and second inner ring is in footpath Outside is provided with the second groove, first groove collectively forms one sealing of receiving with second groove The accommodating chamber of circle.

Compared with prior art, the present invention has advantages below：Using removable fasteners to the first inner ring Axial limiting is carried out with the second inner ring, it is easy to operate, and damage will not be caused to parts of bearings.

Brief description of the drawings

Fig. 1 is the profile of prior art bearing unit；

Fig. 2 is the profile (not showing housing) of bearing unit of the present invention；

Fig. 3 is the enlarged diagram of a-quadrant in Fig. 2；

Fig. 4 is the stereogram of the second inner ring.

Embodiment

As in Figure 2-4, bearing unit of the present invention includes the clutch shaft bearing 100 and second being arranged side by side vertically Bearing 200.Clutch shaft bearing 100 include the first outer ring 101, the first inner ring 102, positioned at the first outer ring 101 with Some first rolling elements 103 and retainer 104 between first inner ring 102.Second bearing 200 includes second Outer ring 201, the second inner ring 202, some second rollings between the second outer ring 201 and the second inner ring 202 Kinetoplast 203 and retainer 204.In this embodiment, clutch shaft bearing 100, second bearing 200 be all For taper roll bearing.

Second inner ring 202 has the platform part 205 protruded axially towards the first inner ring 102, in platform part There is the through hole 206 radially broken through with to install a dismountable fastener 300 on 205.First inner ring 102 have the auxiliary section 105 protruded axially towards the second inner ring 202, and the auxiliary section 105 is located at platform part 205 radial outside is simultaneously provided with the stop that platform part 205 is radially extended in the end of auxiliary section 105 Portion 106.A receiving space 400 is so formed between platform part 205 and auxiliary section 105.Through hole 206 is with being somebody's turn to do Receiving space 400 is connected.

In specific installation process, when installing the second inner ring 202, dismountable fastener 300 is pre-installed To platform part 205, removably fastener 300 and through hole 206 dismountable fastener will be ensured with merging 300 without departing from platform part 205 radially-outer surface, when so can ensure the first inner ring 102 of subsequent installation, Dismountable fastener 300 does not constitute stop.Specifically, the radially-outer surface of platform part 205 can be as leading Guide the first inner ring 102 to move and finally realize towards the second inner ring 202 to face to abut, in this process, The radially-outer surface that stop part 106 is close to platform part 205 moves and crosses through hole 206.At this moment operative employee is used Tool makes dismountable fastener 300 extend into receiving space 400, stops so as to be constituted to stop part 106, prevents Only the first inner ring 102 is separated from each other in the axial direction with the second inner ring 202.The operation of instrument for convenience, can The fastener 300 of dismounting has handle hole 301.

Due to there is gap, it is necessary to take certain close in the joint of the first inner ring 102 and the second inner ring 202 Envelope.In the present embodiment, the first inner ring 102 is provided with the first groove 107, the second inner ring in radially outer 202 are provided with the second groove 207 in radially outer, and the first groove 107 and the second groove 207 are collectively forming receiving The accommodating chamber of sealing ring 500.In installation process, sealing ring 500 is initially mounted on the second groove 207, portion Point hanging, when the first inner ring 102 of subsequent installation, it is recessed that the overhanging portion of sealing ring 500 may be housed in first Groove 107.Because platform part 205 can realize accurate guiding in the present invention, so that sealing ring 500 is hanging Part is accurately realized with the first groove 107 to be coordinated, and is prevented because contraposition is inaccurate and pushes up sealing ring 500 partially.

Preferably, removable fasteners 300 are to have screw thread in holding screw, through hole 206.Installation process In, holding screw can be screwed in the through hole 206 of platform part 205 in advance, treat the first inner ring 102 and the second inner ring 202 alignment are screwed into holding screw with simple die nut until being seen by the endoporus of the first inner ring 102 after being put into Lose.When parts of bearings needs to change or overhauled, holding screw can be screwed back with die nut To original state, the axial displacement cancelled between the first inner ring 102 and the second inner ring 202 is limited, thus The first inner ring 102 and the second inner ring 202 can be easily separated.Certainly, in order to preferably it is spacing, tightly Determining screw can be spaced apart multiple in the circumferential, and accordingly, through hole 206 is also required to set same multiple.

The present invention carries out axial limiting, operation side using removable fasteners to the first inner ring and the second inner ring Just, and parts of bearings will not be caused damage.

Although the present invention is only described with regard to some exemplary embodiments, these are described should be only as showing Example is without being construed as limiting.In the range of appended claims record, do not depart from spirit of the invention and Under ambit, what various change was equally possible.

Claims

1. a kind of bearing unit, including the clutch shaft bearing and second bearing set in the axial direction, clutch shaft bearing include First inner ring, second bearing includes the second inner ring being arranged side by side in the axial direction with first inner ring, Characterized in that, second inner ring has in the platform part protruded towards the first inner ring, described first Circle is dismountable with being provided with the auxiliary section of the platform part radial outside, the platform part There is stop part, dismountable fastener prevents the stop part on fastener, the auxiliary section It is directed away from the direction movement of the second inner ring.

2. bearing unit according to claim 1, it is characterised in that the stop part is from the auxiliary section End extend towards the platform part, so as to form one between the auxiliary section and the platform part Receiving space.

3. bearing unit according to claim 2, it is characterised in that formed in the platform part and install institute State dismountable fastener and the through hole diametrically run through.

4. bearing unit according to claim 3, it is characterised in that dismountable fastener extension Enter the receiving space.

5. bearing unit according to claim 4, it is characterised in that the through hole has multiple and along week To being spaced apart.

6. bearing unit as claimed in any of claims 1 to 5, it is characterised in that described removable The fastener unloaded is trip bolt, and the through hole is screwed hole.

7. bearing unit according to claim 6, it is characterised in that behaviour is provided with the trip bolt Make hole.

8. bearing unit as claimed in any of claims 1 to 5, it is characterised in that described first Inner ring is provided with the first groove in radially outer, and it is recessed that second inner ring is provided with second in radially outer Groove, first groove collectively forms the accommodating chamber for accommodating a sealing ring with second groove.