Gearbox transmission compressor motor bearing cooling lubrication structure

Abstract

The invention discloses a gearbox transmission compressor motor bearing cooling lubrication structure, and relates to the field of motors. At present, shaft extension end bearings of TEFC medium and small motors are basically cooled through oil, the high temperature problem of the shaft extension end bearings has always been a difficult problem in the industry, the temperature of the shaft extension end bearings is 30-40 DEG C higher than the temperature of non-shaft extension end bearings, the temperature of the shaft extension end bearings even exceeds 95 DEG C, the temperature difference between inner rings and outer rings of the non-shaft extension end bearings is too large, and consequently the motors cannot work normally. An oil inlet and an oil outlet are formed in an oil chamber ofthe shaft extension end for communicating with a compressor cooler and a gearbox, heat dissipation of an oil chamber bearing is achieved through cooling oil circulation, and compared with traditionaloil heat conduction cooling, the cooling effect is greatly improved; and the temperature difference between an inner ring and an outer ring of a non-shaft extension end bearing is lowered through theblocking action of a baffle, the temperature difference between a front bearing and a rear bearing is lowered, and normal operation of the motor is effectively ensured.

Description

technical field [0001] The invention relates to the field of motors, in particular to a cooling and lubricating structure for a motor bearing of a gear box transmission compressor. Background technique [0002] At present, in the manufacture of industrial motors, the shaft extension bearings of TEFC small and medium-sized motors are basically cooled by grease. The high temperature problem of the shaft extension bearings has always been a difficult problem in the industry. The temperature of the bearing is too high, the normal difference is 30-40 ℃, and the high temperature can reach more than 50 ℃. Even the temperature of the bearing at the end of the shaft extension exceeds 95°C, causing the motor to fail to operate normally. And because the temperature difference between the bearings at both ends is large, the entire shaft system is in an unbalanced state, and the motor is prone to vibration, noise and other problems, which reduces the bearing life. This kind of problem ...

AI Technical Summary

Problems solved by technology

It leads to high temperature of the bearing at the shaft end of the motor, and the problem of high temperature protection shutdown often occurs, which affects the normal production of the factory and seriously leads to major economic losses

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