Rotating shaft of electric motor

Abstract

The invention belongs to the field of motors, and in particular relates to a rotating shaft of an electric motor, which includes an inner rotating shaft installed in a motor, a shaft extending end extending axially and externally of the inner rotating shaft is connected with an outer rotating shaft through a transition shaft, and the transition shaft is made of a heat insulation material. In the rotating shaft, the transition shaft can block the heat conduction between the outer rotating shaft and the inner rotating shaft, thereby avoiding the failure of cooperation between the inner rotatingshaft and the bearing and the like caused by the high temperature, and further effectively improving the operation stability and reliability of the motor.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a motor shaft. Background technique [0002] With the development of science and technology, the motor needs to be used in various special environments, among which the high temperature environment has the greatest impact on the working state of the motor. In order to ensure the stable operation of the motor, the temperature of the motor body should be below 300 °C. When the working temperature at the output end of the motor shaft is higher than 300°C, the high temperature will be transmitted to the interior of the motor through the motor shaft, affecting the cooperation of the bearings and other connecting parts directly connected to the motor shaft, and causing adverse effects on various components in the motor. In the prior art, water cooling or air cooling is usually used to cool down the motor, but the heat dissipation effect is limited. When the working temperature of the output end o...

AI Technical Summary

Problems solved by technology

When the working temperature at the output end of the motor shaft is higher than 300°C, the high temperature will be transmitted to the interior of the motor through the motor shaft, which will affect the cooperation of the bearings and other connecting parts directly connected to the motor shaft, and cause adverse effects on various components in the motor

In the prior art, water cooling or air cooling is usually used to cool down the motor, but the heat dissipation effect is limited. When the working temperature of the output end of the motor shaft is between 700°C and 1500°C, the above method cannot meet the cooling requirements of the motor.

At present, some manufacturers in the market use heat-resistant metal alloys to make motor shafts. Although this improves the heat insulation effect of the motor shaft, it is expensive and cannot be used in mass production.

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