CN217055966U - Emergency bearing for magnetic suspension compressor - Google Patents

Abstract

The utility model relates to an emergency bearing for a magnetic suspension compressor, which is characterized in that the emergency bearing comprises a first outer ring, a first inner ring, a first roller, a second outer ring, a second inner ring, a second roller and a fixed buckle; the first roller and the second roller are both ceramic steel balls; the included angle alpha of the first roller, the first outer ring sleeve and the first inner ring in rolling contact is 12-18 degrees; and the included angle beta of the rolling contact of the second roller and the second outer ring sleeve and the second inner ring is 12-18 degrees. The utility model has the advantages of can realize drawing high-speed or deceleration in the twinkling of an eye and the roller is difficult to burn out, can not become invalid and life is high through striking many times.

Description

Emergency bearing for magnetic suspension compressor

Technical Field

The utility model relates to an emergent bearing especially relates to an emergent bearing is used to magnetic suspension compressor.

Background

The emergency bearing for the magnetic suspension compressor at present adopts a deep groove ball bearing which comprises an outer ring, an inner ring, a retainer and rollers, and because the emergency bearing for the magnetic suspension compressor needs to realize instantaneous high-speed pulling or instantaneous speed reduction stopping when rotating at a high speed during working, the rollers of the bearing are easy to burn out or the retainer breaks to lose efficacy, and the service life of the bearing is short.

Disclosure of Invention

In view of the above disadvantages, an object of the present invention is to provide an emergency bearing for a magnetic suspension compressor that does not fail when the instantaneous deceleration stops when the instantaneous rotation speed is increased or increased by instantaneous tension.

The technical content of the utility model is that an emergency bearing for a magnetic suspension compressor is characterized in that the emergency bearing comprises a first outer ring, a first inner ring, a first roller, a second outer ring, a second inner ring, a second roller and a fixed buckle; the first roller and the second roller are ceramic steel balls; a first outer ring groove is formed in the inner side of the first outer ring, a first inner ring groove corresponding to the first outer ring groove is formed in the outer side of the first inner ring, the first outer ring is sleeved on the outer side of the first inner ring, a first roller is filled between the first outer ring groove and the first inner ring groove, and the included angle alpha formed by the rolling contact of the first roller and the first outer ring sleeve as well as the first inner ring is 12-18 degrees; and a second outer ring groove is formed in the inner side of the second outer ring, a second inner ring groove corresponding to the second outer ring groove is formed in the outer side of the second inner ring, the second outer ring is arranged on the right side of the first outer ring in a close fit mode, the second inner ring is sleeved in the second outer ring, a second roller is filled between the second outer ring groove and the second inner ring groove, and the included angle beta formed by the rolling contact of the second roller with the second outer ring sleeve and the second inner ring is 12-18 degrees.

Compared with the prior art, the utility model the advantage that has do: the utility model combines two bearings, each bearing cancels a retainer, and is filled with ceramic steel balls between an outer ring and an inner ring, and rolling contact points of the ceramic steel balls and the outer ring and the inner ring form a contact included angle, and the two bearings have symmetrical structures; from this the utility model discloses can realize drawing high speed in the twinkling of an eye, only need 0.2 second from 0 to 30000rpm, deceleration in the twinkling of an eye, only need 2 seconds from 30000 to 0rpm to the roller is difficult to burn out and can not become invalid through striking many times, thereby improves life.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, an emergency bearing for a magnetic levitation compressor is characterized in that the emergency bearing comprises a first outer ring 1, a first inner ring 2, a first roller 3, a second outer ring 4, a second inner ring 5, a second roller 6 and a fixing buckle 7; the first roller 3 and the second roller 6 are both ceramic steel balls; a first outer ring groove 1.1 is arranged on the inner side of the first outer ring 1, a first inner ring groove 2.1 corresponding to the first outer ring groove 1.1 is arranged on the outer side of the first inner ring 2, the first outer ring 1 is sleeved on the outer side of the first inner ring 2, a first roller 3 is filled between the first outer ring groove 1.1 and the first inner ring groove 2.1, and an included angle alpha formed by the first roller 3, the first outer ring sleeve 1 and the first inner ring 2 in rolling contact is 15 degrees; a second outer ring groove 4.1 is arranged on the inner side of the second outer ring 4, a second inner ring groove 5.1 corresponding to the second outer ring groove 4.1 is arranged on the outer side of the second inner ring 5, the second outer ring 4 is arranged on the right side of the first outer ring 1 in a close fit mode, the second inner ring 5 is sleeved in the second outer ring 4, a second roller 6 is filled between the second outer ring groove 4.1 and the second inner ring groove 5.1, and the included angle beta formed by the rolling contact of the second roller 6 with the second outer ring 4 and the second inner ring 5 is 15 degrees.

Claims (2)

1. An emergency bearing for a magnetic suspension compressor is characterized by comprising a first outer ring, a first inner ring, a first roller, a second outer ring, a second inner ring, a second roller and a fixing buckle; the first roller and the second roller are both ceramic steel balls; a first outer ring groove is formed in the inner side of the first outer ring, a first inner ring groove corresponding to the first outer ring groove is formed in the outer side of the first inner ring, the first outer ring is sleeved on the outer side of the first inner ring, a first roller is filled between the first outer ring groove and the first inner ring groove, and the included angle alpha formed by the rolling contact of the first roller and the first outer ring sleeve and the first inner ring is 12-18 degrees; a second outer ring groove is formed in the inner side of the second outer ring, a second inner ring groove corresponding to the second outer ring groove is formed in the outer side of the second inner ring, the second outer ring is arranged on the right side of the first outer ring in a close fit mode, the second inner ring is sleeved in the second outer ring, a second roller is filled between the second outer ring groove and the second inner ring groove, and the included angle beta formed by the second roller, the second outer ring and the second inner ring in rolling contact is 12-18 degrees.

2. The emergency bearing for magnetic suspension compressors according to claim 1, characterized in that the angle α of the rolling contact of the first rollers with the first outer race and the first inner race is 15 degrees; the included angle beta of the second roller, the second outer ring sleeve and the second inner ring in rolling contact is 15 degrees.

Images