CN203645441U - Bearing chamber structure capable of preventing bearing creepage - Google Patents

Abstract

The utility model discloses a bearing chamber structure capable of preventing bearing creepage. The bearing chamber structure comprises a cylindrical bearing and a ball bearing which are assembled in a bearing chamber, clearance fits are provided between an outer ring of the cylindrical bearing and an inner wall of the bearing chamber and between an outer ring of the ball bearing and the inner wall of the bearing chamber, the inner wall, corresponding to the outer ring of the ball bearing, of the bearing chamber is provided with an annular groove, an O-shaped rubber ring is installed in the annular groove, and the inner diameter of the O-shaped rubber ring is less than the diameter of the outer ring of the ball bearing. Because the bearing chamber inner wall where the ball bearing is located is provided with the groove, the O-shaped rubber ring is disposed in the groove when the bearing is assembled, and the inner diameter of the O-shaped rubber ring is less than the diameter of the outer ring of the ball bearing, after the bearing is installed, the bearings can be prevented from occurring axial creeping lap running due to an extrusion friction force between the outer ring of the ball bearing and the O-shaped rubber ring, the probability of fault occurrences of the bearings is reduced, usage reliability of the bearing is effectively improved, and the service lives of the bearings are greatly prolonged.

Description

A kind of bearing chamber structure that prevents that bearing from wriggling

Technical field

The utility model relates to the bearing chamber structure of motor bearings assembling.

Background technology

Use the bearing adopting on the large and middle size motor of rolling bearing to configure common three bearing arrangements that have, what its load end used is cylindrical bearing and ball bearing pairing, load end as positioning end wherein ball bearing play axial location effect, do not bear radial load, its bearing chamber endoporus and ball bearing outer ring are matched in clearance, and unsupported end uses cylindrical bearing as floating end.In use, find, the ball bearing of load end even runs circle phenomenon because outer ring wriggling occurs in the factor effects such as assembling or load sometimes, now can cause bearing heating, in serious situation, even causes the faults such as bearing damage.

Utility model content

For improving bearing dependability, the utility model provides a kind of bearing chamber structure that prevents that bearing from wriggling, the drawback that ball bearing outer ring is wriggled or race is enclosed existing to solve existing bearing chamber structure.

For realizing the utility model object, this bearing chamber structure that prevents that bearing from wriggling comprises the cylindrical bearing and the ball bearing that are assemblied in bearing chamber, cylindrical bearing outer ring and ball bearing outer ring matched in clearance respectively and between bearing chamber inwall, it is characterized in that offering a ring-shaped groove on the bearing chamber inwall of corresponding ball bearing outer ring, installing " O " type cushion rubber in ring-shaped groove, " O " type cushion rubber internal diameter is less than ball bearing outer ring diameter.

The technological progress that the utility model is obtained: owing to offering a groove at the residing bearing chamber inwall of ball bearing, when bearing assemble, in this groove, place " O " type cushion rubber, and " O " type cushion rubber internal diameter is less than ball bearing outer ring diameter, after bearing is installed, between ball bearing outer ring and " O " type cushion rubber due to extrusion friction power, thereby can stop bearing to occur axially to wriggle to run to enclose, reduce the probability that bearing breaks down, the dependability of bearing effectively improves, and bearing obtains very large prolongation useful life.

Brief description of the drawings

Fig. 1 is the utility model structural representation.

Embodiment

As shown in Figure 1, this bearing chamber structure that prevents that bearing from wriggling of the utility model is the improvement of carrying out on existing large and middle size motor bearing chamber structure basis, its bearing chamber structure comprises the cylindrical bearing 2 and the ball bearing 1 that are assemblied in bearing chamber, the outer ring of the outer ring of cylindrical bearing 2 and ball bearing 1 matched in clearance respectively and between bearing chamber inwall, on the bearing chamber inwall of corresponding ball bearing 1 outer ring, offer a ring-shaped groove, in ring-shaped groove, install " O " type cushion rubber 3 that an internal diameter is less than ball bearing outer ring diameter.In the time of cylindrical bearing and ball bearing pairing use, ball journal is made axial location and is not born in radial load situation, and the extrusion friction power between ball bearing outer ring 2 and " O " type cushion rubber 4 can play and stop bearing outer ring 2 that the axial even race circle of wriggling occurs.

Claims (1)

1. the bearing chamber structure that can prevent that bearing from wriggling, it comprises the cylindrical bearing and the ball bearing that are assemblied in bearing chamber, cylindrical bearing outer ring and ball bearing outer ring matched in clearance respectively and between bearing chamber inwall, it is characterized in that offering a ring-shaped groove on the bearing chamber inwall of corresponding ball bearing outer ring, installing one " O " type cushion rubber in ring-shaped groove, " O " type cushion rubber internal diameter is less than ball bearing outer ring diameter.

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