CN2554419Y

CN2554419Y - Cage for two-way thrust tapered raller bearing

Info

Publication number: CN2554419Y
Application number: CN 02274375
Authority: CN
Inventors: 王德惠; 司元东; 黄耀德; 张福祥; 孙梅喜
Original assignee: Wafangdian Bearing Group Corp
Current assignee: Wafangdian Bearing Group Corp
Priority date: 2002-07-24
Filing date: 2002-07-24
Publication date: 2003-06-04
Anticipated expiration: 2012-07-24

Abstract

The utility model relates to a bidirectional tapered roller thrust bearing retainer. Cage pockets which are uniformly distributed and basically forms a trapezoidal shape are arranged on an annular body of the retainer. The annular surfaces of the intervals of the cage pockets adjacently facing to a seat ring are oblique surfaces which are inwards convex toward the cage pockets on both sides; pressing grooves for a lock rolling body are correspondingly arranged on the annular surfaces of the intervals of the cage pockets facing to a shaft ring. Lug bosses of the cage pockets, which contact both end surfaces of the rolling body, are all provided with inclination angles. Lubricating oil holes are arranged on the contacting surface of the retainer, the shaft ring and the seat ring. The four angles of each cage pocket are all round angles. The utility model can bear a larger axial load at high rotating speed and has longer service life.

Description

The bidirectional thrust tapered roller bearing retainer

Technical field the utility model relates to a kind of retainer.

Background technique is present, and the general structure of bidirectional thrust tapered roller bearing is all by keeping stand, retainer lid and fastening piece to form.Show following deficiency when adopting the bidirectional thrust tapered roller bearing of this structure retainer to be used to run up the bigger occasion of responsive to axial force: 1, because action of centrifugal force during operation, the tapered roller big end surface is clashed into mutually with the retainer lid, make the retainer lid be difficult to bear, fastening piece also is subjected to big tensile force simultaneously.2, retainer lid, keep stand opposite with seat ring, the suffered friction direction of blowout patche respectively because the effect of rolling element thrust, fastening piece will be subjected to bigger shearing force.3, because of the pocket hole be the conical bore retainer on axial any direction during play, the impact of the axial direction power that all will be rolled.4, because the area of contact between pocket hole and the rolling element is bigger, friction is bigger; Lubricant oil is difficult for again entering or flowing out simultaneously, heat is difficult for distributing, easily make the rolling element heating, lubricant oil lost efficacy and accelerated, friction also will aggravate between rolling element and the bearing ring raceway, and under the power effect, early fatigue will appear in bearing to be destroyed at high rotating speed, larger axis, even the meeting sintering, the bearing working life-span is reduced.

It is ring body that summary of the invention the utility model retainer only has parts, which is provided with uniform radially pocket hole, this pocket hole is the trapezoidal hole corresponding with tapered roller substantially, and this big end in pocket hole is adjacent with the body outer circumferential face, and pocket hole small end is adjacent with the body inner peripheral surface.Concentrate and be convenient to the lubricant oil circulation for reducing stress, preferably four angles in pocket hole are fillet, transverse section, the pocket hole opening that contains the rolling element part is made up of rectangle and trapezoidal mouth, and just the close ring surface part towards seat ring of pocket span is the inclined-plane to two side pocket hole evaginations.When bearing in when work, the rolling element bus contacts for linearity with this inclined-plane, the heat of the less generation of friction is also less.Be provided with the bar shaped indent of lock rolling element corresponding with it at the pocket span on the anchor ring of blowout patche, it can be spacing with rolling element effectively, and it is come off; Its in service do not stress or few stressed, make that impact force is minimum between retainer female surface and the rolling element again.The boss that above-mentioned pocket hole contacts with the rolling element both ends of the surface is all established the inclination angle, and it can reduce the impact force between rolling element and boss, also can make fully lubricated.The face that this retainer contacts with blowout patche, seat ring is provided with breach or through hole, i.e. oilhole, and it can make the lubricant oil retainer of freely coming in and going out.

The utility model has following advantage compared to existing technology: because retainer has taken into full account stressed distribution and lubricated adequacy, so the retainer of this structure can bear the bigger thrust load of high rotating speed, and has long working life.

Description of drawings is as follows:

Fig. 1 is the utility model user mode schematic representation.

Fig. 2 is the local schematic top plan view of the utility model.

Fig. 3 is a radially cross-sectional schematic of the utility model.

Fig. 4 is the A-A view of Fig. 3.

Fig. 5 is that the B of Fig. 3 is to view.

Embodiment is in the user mode schematic representation of bidirectional thrust tapered roller bearing retainer shown in Figure 1, the retainer 3 that tapered roller 2 is arranged in the pocket hole is respectively established in the both sides up and down of blowout patche 1, respectively establish a seat ring 4 in each retainer outside, the part between blowout patche outer shroud and two seat rings is provided with gets rid of oil catch circle 5.In the schematic representation of Fig. 2 and bidirectional thrust tapered roller bearing retainer shown in Figure 3, the retainer ring body is provided with the uniform basic trapezoidal pocket hole 6 that is, four jiaos of the pocket hole are fillet.The pocket span is to the inclined-plane 7 of two side pocket hole evaginations, as shown in Figure 4 near the ring surface part towards seat ring.On the anchor ring of blowout patche, be provided with lock rolling element indent 8 corresponding at the pocket span, as shown in Figure 5 with it.The pocket hole is equipped with the inclination angle with the boss that the rolling element both ends of the surface contact.Retainer is provided with oilhole with the face that blowout patche, seat ring contact.

Claims

1, a kind of bidirectional thrust tapered roller bearing retainer, it is characterized in that: the retainer ring body is provided with the uniform basic trapezoidal pocket hole that is, the close ring surface part towards seat ring of pocket span is the inclined-plane to two side pocket hole evaginations, on the anchor ring of blowout patche, be provided with lock rolling element indent corresponding at the pocket interporal lacuna with it, the boss that the pocket hole contacts with the rolling element both ends of the surface is all established the inclination angle, and retainer is provided with oilhole with the face that blowout patche, seat ring contact.

2, bidirectional thrust tapered roller bearing retainer according to claim 1 is characterized in that: four jiaos of the pocket hole are fillet.