CN201884480U

CN201884480U - Motor bearing labyrinth gland

Info

Publication number: CN201884480U
Application number: CN2010206438229U
Authority: CN
Inventors: 孙晓霞; 徐英华; 李恒; 毕华东; 尹纪斌
Original assignee: Shandong Huali Electric Motor Group Co Ltd
Current assignee: Shandong Huali Electric Motor Group Co Ltd
Priority date: 2010-11-24
Filing date: 2010-11-24
Publication date: 2011-06-29
Anticipated expiration: 2020-11-24

Abstract

The utility model relates to a motor bearing labyrinth gland. In order to overcome the defects of the preventive measures of the traditional motor bearing, the utility model provides the motor bearing labyrinth gland, which comprises a labyrinth ring and a bearing outer cover; two annular grooves are processed on the outer surface of the bearing outer cover; the labyrinth ring is in a circular ring shape; a half opening is processed in the middle of the radial cross section of the labyrinth ring to divide the labyrinth ring into a front part and a rear part; the front end of the labyrinth ring and a motor shaft are in interference fit; two annular teeth are processed on the ring surface of the front end of the labyrinth ring; the annular teeth are embedded in the grooves of the bearing outer cover; an opening is processed on a ring body at the rear part of the cross section of the labyrinth ring to divide the labyrinth ring into a left part and a right part; the ring bodies at the left part and the right part are provided with sunk screw holes; and the degree of tightness of the fit between the labyrinth ring and the motor shaft is adjusted by using a socket head screw. The motor bearing labyrinth gland provided in the utility model does not need to be lubricated and is not limited by the motor speed. The problems of noise and bearing heating are well solved.

Description

A kind of motor bearings labyrinth gland

Technical field

The utility model relates to a kind of motor bearings labyrinth gland.

Background technique

The motor applications field is extensive, often uses in dust, salt fog, moist place, and bearing of motor is in operation, if protect improperly, outside harmful matter enters in the bearing grease along the gap of rotating shaft and bearing cap; Inner lubricating grease is along with temperature raises, and viscosity reduces, easy seepage, and this all will influence the performance and the working life of bearing.Each producer takes several different methods to protection, and the method that adopts is usually: backbone sealing ring is installed on bearing end cover.With the bearing end cover thickening, inner processing one groove is to install backbone sealing ring.This scheme has increased the weight of bearing end cover, and backbone sealing ring rubs with rotating shaft in motor operation course, and axle and bearing temperature are raise, and the sound that screams is sent in friction simultaneously, and motor noise is increased.Through friction after a while, backbone sealing ring strengthens with the axle matching gap, and noise and heating situation are just alleviated to some extent, but the protective ability that has also reduced backbone sealing ring is strengthened in the gap, and bearing grease is easy to contaminated, makes bearing produce noise and vibration.

The model utility content

For overcoming the deficiency of present motor bearings protective measures, the utility model provides a kind of motor bearings labyrinth gland.

The technical solution adopted in the utility model is: a kind of motor bearings labyrinth gland, this device comprises a labyrinth ring and bearing end cover, the outer surface processing bipassage ring connected in star of described bearing end cover, described labyrinth ring is circular, one half gap of processing in the middle of the radial cross section of labyrinth ring, before labyrinth ring is divided into, back two-part, front end and motor shaft interference fit, processing twice annular tooth on labyrinth ring front end anchor ring, annular tooth is embedded in the groove of bearing end cover, one gap of processing on the ring body at rear portion, labyrinth ring cross section, labyrinth ring is divided into left and right sides two-part, the two-part ring body in the left and right sides is provided with the countersunk head screw, regulates the tightness that labyrinth ring cooperates with axle with socket head screw.

During motor operation, labyrinth ring and axle rotation synchronously, the labyrinth ring tooth rotates in the bearing end cover groove, form the rotary seal air-flow at enclosing cover with axle fitting surface place, outside harmful matter and the lubricating grease in the bearing are when passing through the gap in tortuous labyrinth, produce throttle effect, thereby reach purpose impermeable, anti-leak.The utility model is a noncontact seal, and the sealing air-flow is to be produced by labyrinth ring rotation itself, need not increase other component, need not lubricate, and not limited by motor speed, has solved noise and bearing heating problem well.

Description of drawings

Fig. 1 is the schematic representation that labyrinth ring cooperates with bearing end cover.

Fig. 2 is the plan view of labyrinth ring.

Fig. 3 is that Fig. 2 A-A is to sectional view.

Among the figure, 1, labyrinth ring, 2, half gap, 3, annular tooth, 4, gap, 5, the countersunk head screw, 6, socket head screw, 7, bearing end cover, 8, annular groove, 9, motor shaft.

Embodiment

As shown in Figure 1, a kind of motor bearings labyrinth gland, this device comprise a labyrinth ring 1 and bearing end cover 7, are 13 annular groove 8 in the outer surface of the bearing end cover processing twice degree of depth, at the bearing end cover 7 outside labyrinth rings 1 of installing.

As Fig. 2, shown in Figure 3, labyrinth ring 1 is circular, one width of processing is 3 half gap 2 in the middle of the radial cross section of labyrinth ring, labyrinth ring is divided into forward and backward two-part, processing twice length is 11 annular tooth 3 on labyrinth ring 1 front end anchor ring, and one width of processing is 2 gap 4 on the ring body at rear portion, labyrinth ring cross section, and labyrinth ring is divided into left and right sides two-part, the two-part ring body in the left and right sides is provided with countersunk head screw 5, regulates the tightness that labyrinth ring 1 cooperates with motor shaft 9 with socket head screw 6.

As shown in Figure 1, the annular tooth 3 of labyrinth ring is embedded in the annular groove 8 of bearing end cover, the monolateral gap of tooth and groove is 0.5, and labyrinth ring front end and motor shaft form interference fit, the rear end usefulness socket head screw tightness adjusting labyrinth ring of labyrinth ring and cooperating of axle.During motor operation, labyrinth ring and motor shaft rotate synchronously, the labyrinth ring tooth rotates in the bearing end cover groove, form the rotary seal air-flow at enclosing cover with axle fitting surface place, outside harmful matter and the lubricating grease in the bearing are when passing through the gap in tortuous labyrinth, produce throttle effect, thereby reach purpose impermeable, anti-leak.

Claims

1. motor bearings labyrinth gland, this device comprises a labyrinth ring and bearing end cover, the outer surface processing bipassage ring connected in star of described bearing end cover, described labyrinth ring is circular, one half gap of processing in the middle of the radial cross section of labyrinth ring, before labyrinth ring is divided into, back two-part, front end and motor shaft interference fit, processing twice annular tooth on labyrinth ring front end anchor ring, annular tooth is embedded in the groove of bearing end cover, and one gap of processing is divided into left and right sides two-part with labyrinth ring on the ring body at rear portion, labyrinth ring cross section, the two-part ring body in the left and right sides is provided with the countersunk head screw, regulates the tightness that labyrinth ring cooperates with axle with socket head screw.