CN205331245U - Connection structure of pivot and bearing - Google Patents

Abstract

The utility model discloses a connection structure of pivot and bearing, be equipped with the bearing shelves in the pivot, axle contracting draws together inner circle, the outer lane rolling element between and, the blockking that face department is protruding and be equipped with along the stopper of axle arrangement of bearing shelves, the inner circle is equipped with the breach with stopper matched with. The utility model discloses a change the breach cooperation on epaxial stopper and the bearing inner race, realize that the pivot is fixed with the circumference of bearing, can avoid the relative displacement that both take place when high speed, high load capacity rotation.

Description

A kind of attachment structure of rotating shaft and bearing

Technical field

This utility model relates to machinery manufacturing technology field, is specifically related to the attachment structure of a kind of rotating shaft and bearing。

Background technology

Bearing is a kind of very important parts in plant equipment in the present age。Its major function is to support machinery rotary body, in order to reduce equipment mechanical load coefficient of friction in transmission process。

Bearing fit is typically all interference fits, but is having in particular cases optional interference fit。It is the inner ring of bearing and coordinating of axle that bearing coordinates with axle, produces inner ring and roll during in order to prevent bearing inner race from coordinating with the minimum limit of size of axle, and the surface of injury axle, general bearing inner race has the lower inclined tolerance of 0 to several μm to ensure that inner ring does not rotate。

Although when bearing trim designs, bearing inner race and rotating shaft will not occur " creeping ", but at a high speed, still can wear and tear when high load capacity rotates between axle and bearing, and speed is more fast, weares and teares more serious, reduces service life。

Bearing to make the centrage of dead eye and axle overlap when installing。Adopting interference fit to assemble between bearing inner race and axle, the size of its magnitude of interference should make mating surface that " creeping " does not occur under workload。Need during assembling to use forcing press press-in or assembling sleeve pipe and hammer installation, if Rig up error, can cause the bending of impression, axle journal that bearing inner race even can be made to rupture。

In tricot machine bearing application, when thrust bearing runs up, due to the effect of centrifugal force and gyroscopic couple, the slip/stick movement being harmful between rolling element and raceway, can be produced, in order to ensure axial position, use collar to apply to preload。The patent documentation that publication No. is CN104533915A discloses a kind of axle adjustment collar。This axle adjustment collar includes collar main body, collar main body is " D " font, collar body front end is provided with locking nut, the side of collar main body is provided with retaining mechanism, above collar main body, middle part is provided with projection, being provided with safety plate in protruding side, be arranged over bolt, self-locking packing ring and thick washer at protruding, described safety plate is placed in below thick washer。This axle regulates the simple in construction of collar, it is ensured that axle and thrust bearing with the use of time, in axle rotation process, determine and keep the axial location of axle, do not affect the rotation of axle simultaneously, it is possible to the size of adjustment axial thrust, locking effect is stable。

Selecting properly bearing fit, service life of the bearing that guarantee equipment run well, improves and to make full use of the bearing capacity relation of bearing very big。In order to solve the wear problem of axle and bearing, the countershaft structure with bearing is needed to improve。

Utility model content

For the deficiencies in the prior art, this utility model provides the attachment structure of a kind of rotating shaft and bearing, is coordinated by the limited block in rotating shaft and the breach on bearing inner race, it is prevented that rotating shaft produces abrasion with bearing inner race matching surface generation relative displacement。

A kind of attachment structure of rotating shaft and bearing, described rotating shaft is provided with bearing guard, described bearing include inner ring, outer ring and between rolling element, the blocking surface place of bearing guard is convexly equipped with axially disposed limited block, and described inner ring is provided with the breach matched with limited block。

The inner ring of bearing is stretched in one end of this utility model rotating shaft, and bearing keeps off against bearing, and the breach of inner ring coordinates with limited block breach, it is achieved bearing is circumferentially fixed with rotating shaft, it is to avoid plant equipment, both when high speed, high load capacity rotate, relative displacement occurs。

As preferably, described rotating shaft is provided with the notch extending to bearing guard along axle, is filled with the abaculus matched in notch, and abaculus exposes the part of described notch and namely constitutes described limited block。

Abaculus is filled in the notch in the breach of bearing inner race and rotating shaft, during axis of rotation, due to the effect of abaculus, drives bearing inner race to rotate。

Being more highly preferred to, described abaculus is made up of body and the projection being located at body one end side, and described body has one end of projection and is seated in bearing guard, and described bossing exposes notch, constitutes described limited block。Bearing inner race coordinates with the body of abaculus, breach and raised portion fits, and such structure makes abaculus and bearing fit obtain tightr。

As preferably, described body is wedge shape。When body coordinates with notch, the structure of wedge shape can ensure that body is substantially embedded into notch, reaches body and the friction tight purpose of notch。

As preferably, described projection radially flushes with bearing guard。Abaculus fills up the vacancy between rotating shaft and bearing, does not increase additional volumes, does not affect its application in plant equipment。

As preferably, it is 5-10mm that described notch stretches into the length of bearing guard。Notch stretches into bearing gear, adds the volume that can fill abaculus, thus adding the consolidation of abaculus。Ensure the firmness that rotating shaft and bearing are circumferentially fixed。

Compared with prior art, the beneficial effect that this utility model possesses: this utility model is coordinated by the limited block in rotating shaft and the breach on bearing inner race, realize the circumferentially fixed of rotating shaft and bearing, can avoid at a high speed, high load capacity rotate time both the relative displacement that occurs。

Accompanying drawing explanation

Fig. 1 is the schematic diagram of this utility model rotating shaft and the attachment structure of bearing。

Fig. 2 is the top view of this utility model rotating shaft。

Fig. 3 is the sectional view of the rotating shaft slot-open-section of Fig. 2。

Fig. 4 is the sectional view of this utility model abaculus。

Detailed description of the invention

In order to deepen understanding of the present utility model, below in conjunction with drawings and Examples, this utility model being described in further detail, this embodiment is only used for explaining this utility model, protection domain of the present utility model is not constituted and limits。

As it is shown in figure 1, rotating shaft 1 of the present utility model and bearing 2 interference fit, bearing 2 include inner ring, outer ring and between rolling element, rotating shaft 1 is provided with bearing guard 11, and bearing is resisted against the blocking surface place of bearing guard 11。

As shown in Figure 2,3, rotating shaft 1 being provided with, with bearing guard 11 place of cooperation, the notch 12 extending to bearing guard 11 along axle, notch 12 stretches into bearing gear 10mm, and the abaculus matched can load in notch 12 place。

As shown in Figure 4, abaculus 3 is made up of body 32 and the projection 31 being located at body 32 one end side, and abaculus 3 is in 7 fonts, and body 32 is wedge shape, and small top and big bottom structure contributes to body and embeds notch, reaches friction tight purpose。Protruding 31 are seated in bearing guard 11 upward, and top flushes with the radial direction of bearing guard 11, and this part is exposed notch and formed limited block。

Bearing 2 inner ring place is provided with the breach 21 matched with limited block, such as Fig. 1, abaculus 3 blocks the breach 21 of bearing 2 and the notch 12 of rotating shaft 1, it is achieved circumferentially fixed between bearing and rotating shaft, it is to avoid at a high speed, occur skidding to cause abrasion between rotation shaft and the bearing of high load capacity。

It will be apparent to one skilled in the art that under the premise not necessarily departing from the spirit and scope that this utility model claims limit, it is possible to carry out the change in various ways and details。

Claims (6)

1. the attachment structure of a rotating shaft and bearing, described rotating shaft is provided with bearing guard, described bearing include inner ring, outer ring and between rolling element, it is characterised in that, the blocking surface place of bearing guard is convexly equipped with axially disposed limited block, and described inner ring is provided with the breach matched with limited block。

2. the attachment structure of rotating shaft as claimed in claim 1 and bearing, it is characterised in that described rotating shaft is provided with the notch extending to bearing guard along axle, is filled with the abaculus matched in notch, and abaculus exposes the part of described notch and namely constitutes described limited block。

3. the attachment structure of rotating shaft as claimed in claim 2 and bearing, it is characterized in that, described abaculus is made up of body and the projection being located at body one end side, and described body has one end of projection and is seated in bearing guard, described bossing exposes notch, constitutes described limited block。

4. the attachment structure of rotating shaft as claimed in claim 3 and bearing, it is characterised in that described body is wedge shape。

5. the attachment structure of rotating shaft as claimed in claim 3 and bearing, it is characterised in that described projection radially flushes with bearing guard。

6. the attachment structure of rotating shaft as claimed in claim 2 and bearing, it is characterised in that it is 5-10mm that described notch stretches into the length of bearing guard。