CN2797742Y

CN2797742Y - Bearing assembly

Info

Publication number: CN2797742Y
Application number: CNU200520101936XU
Authority: CN
Inventors: 蒋明夫; 樊新英; 左传伟
Original assignee: ZHEJIANG XINCHANG PEER BEARINGS CO Ltd
Current assignee: ZHEJIANG XINCHANG PEER BEARINGS CO Ltd
Priority date: 2005-04-30
Filing date: 2005-04-30
Publication date: 2006-07-19
Anticipated expiration: 2015-04-30

Abstract

The utility model relates to a bearing assembly. The utility model comprises an outer ring, an inner ring and a plurality of rolling bodies, wherein the outer ring and the inner ring are coaxially arranged, and the rolling bodies are arranged between the inner ring and the outer ring. The inner ring is provided with a stylus pin which extends in the axial direction, and a compressible annular locking sleeve is arranged on the stylus pin. The locking sleeve is provided with a large inner diameter and a small inner diameter, wherein the axial length of the large inner diameter does not exceed the axial length of the stylus pin, the size of the large inner diameter is dovetailed with the stylus pin, and an annular radial step engaged with an annular end wall arranged at the inner end of the stylus pin is formed between the small inner diameter and the large inner diameter. A fastening screw is arranged on the locking sleeve, and the screw can be adjusted to enable the large outer diameter of the locking sleeve to compress the stylus pin so that the stylus pin and the shaft are well locked and engaged. The utility model has the advantages of convenient assembly, guarantee of the strength of the stylus pin, limitation of the coverage of the terminal end of the stylus pin by the large inner diameter of the locking sleeve, and avoidance of the generation of shearing force in the prior art.

Description

Bearing assembly

Technical field

The utility model relates to a kind of bearing that back shaft rotates that is used for thereon.

Background technique

The utility model proposes at the assembly problem that is contained in the bearing that has lock sleeve on the running shaft.

The bearing of existing application lock sleeve, its fit can produce excessive noise and vibrations or the axle of being adorned can be abraded.In order to address these problems, many methods have been adopted.One of them way is to use the stylus pin of groove, perhaps extends axially, and draws from the inner ring of bearing.These stylus pins are inboard the fluting to form the terminal perk of stylus pin at their end, outer end.The part of the identical stylus pin perk of lock sleeve impels stylus pin to bending shaft after lock sleeve is installed and tightened.This structure in the past has a shortcoming need slot on stylus pin exactly, can weaken stylus pin intensity like this even fractures owing to tension causes it.

Another kind of bearing assembly method is to use the stylus pin of not slotting, with one by a big internal diameter and the lock sleeve that little internal diameter forms, big internal diameter is placed on the stylus pin of not slotting but does not contact stylus pin, and the little internal diameter of lock sleeve and the engagement of stylus pin outer end, when locking was tightened entirely, compressing stylus pin outer end offseted with axle.But lock sleeve is installed in the opposite direction of stylus pin easily mistakenly, and promptly less internal diameter is positioned in the bottom of stylus pin, and it can produce a beyond thought shearing force to the stylus pin bottom.

The model utility content

The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the above-mentioned defective that existing product exists, and a kind of bearing assembly is provided.For this reason, the utility model is taked following technological scheme:

A kind of bearing assembly, comprise an inner ring that is contained on the axle, one with the outer ring of the concentric setting of described inner ring and in being embedded in, a plurality of rolling elements between the outer ring, it is characterized in that described inner ring one end extends axially out the stylus pin with looped end wall, the ring-type lock sleeve that can tighten is contained on the described stylus pin circumference, locking is with one than large diameter and a less internal diameter, be no more than the stylus pin axial length than the large diameter axial length, size and stylus pin than large diameter coincide, less internal diameter with than having formed the radially step that is meshed with the ring-type end wall stylus pin outer end a ring-type between the large diameter, a fastening screw is arranged on the lock sleeve, can make the bigger external diameter compression stylus pin of lock sleeve make stylus pin and axle locking engagement well by adjusting screw.The said structure of this scheme can be guaranteed the intensity of stylus pin, and can limit lock sleeve than the covering of large diameter to the stylus pin end, avoids producing shearing force of the prior art.

The utility model is simple in structure, is convenient to assembling, both can guarantee the intensity of stylus pin, can limit lock sleeve again than the covering of large diameter to the stylus pin end, avoids producing shearing force of the prior art.

Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.

Description of drawings

Fig. 1 is a kind of concrete structure schematic representation of the present utility model.

Fig. 2 is the right elevation (clear in order to show, that has omitted axle and miscellaneous part) of Fig. 1.

Fig. 3 is that the K-K of lock sleeve among Fig. 2 is to sectional view.

Embodiment

Shown in Fig. 1,2 is a bearing assembly that is installed on axle 11 (the dotted line display units).This bearing assembly comprises an outer ring 1 and inner ring 2 of coaxial setting, keeps some pellet shot from a slingshot 3 as rolling element by retainer 4 in the corresponding groove on the inside and outside circle, and according to routine, this bearing assembly can comprise a lubrication channel 1a who runs through the outer ring.Annular seal ring 5, back-up ring 6 can be compressed between the inside and outside circle and seal pellet shot from a slingshot.But those structures can be applied on the bearing that does not have lubrication channel or back-up ring and seal ring of other type.Inner ring one end has one section section of extending axially that reduces thickness, and the groove of offering on this section of extending axially forms stylus pin 2a.

In order to protect the bearing assembly on the running shaft, need a lock sleeve 7: lock sleeve 7 is enclosed within on the stylus pin 2a, forces stylus pin 2a near running shaft 11 when lock sleeve tightens.

Lock sleeve 7 can degree of tightness, because a gap 7d who extends along diameter is arranged on it, a side in gap has a smooth passage, and this passage and the threaded passage of gap opposite side are in a straight line.A recess can hold to be contained in is with cap screw 9 on the lock sleeve.The screw thread of band cap screw passes the smooth passage and engages with screw channel, by band cap screw reduction gap 7d lock sleeve is tightened like this.

An axial bore is arranged on the lock sleeve, this Kong Youyi bigger diameter 7c and less diameter 7a, large and small diameter by a circular step 7b radially separately, larger-diameter axial length can change, thereby change the amount that lock sleeve covers stylus pin, can adjust support area of contact and position between lock sleeve and the stylus pin like this.

When the stylus pin 2a that is installed in the inner ring section of extending axially when lock sleeve 7 went up, circular step 7b radially and stylus pin ring-type end wall 2b were inconsistent.Coincide near big external diameter of lock sleeve and the stylus pin outer end, oppress the stylus pin outer end thus and tightly draw close with axle.The circular step of lock sleeve had both determined the position of lock sleeve on the inner ring section of extending axially, and had also determined the coincideing of extension of lock sleeve and stylus pin outer end.

Claims

1, a kind of bearing assembly, comprise an inner ring (2), one with the outer ring (1) of the concentric setting of described inner ring and in being embedded in, a plurality of rolling elements (3) between the outer ring, it is characterized in that described inner ring (2) one ends extend axially out the stylus pin (2a) with looped end wall (2b), the ring-type lock sleeve (7) that can tighten is contained on described stylus pin (2a) circumference, lock sleeve (7) has one than a large diameter (7c) and a less internal diameter (7a), be no more than the stylus pin axial length than the large diameter axial length, size and stylus pin than large diameter coincide, less internal diameter (7a) with than having formed the radially step (7b) that is meshed with the ring-type end wall stylus pin outer end (2b) ring-type between the large diameter (7c), a fastening screw (9) is arranged on the lock sleeve (7), can make the bigger external diameter compression stylus pin of lock sleeve make stylus pin and axle locking engagement well by adjusting screw.

2, bearing assembly according to claim 1 is characterized in that the axial length of described axial length than large diameter less than stylus pin.