A high-speed bearing box for a motor test bench

Abstract

The invention discloses a high-speed bearing box for a motor test bench. The high-speed bearing box comprises a bearing box body, a rotating shaft and a bearing used for supporting the rotating shaft,the bearing box body is provided with a cooling circulating water channel from bottom to top, and the periphery of the installation part of the bearing is cooled. The high-speed bearing box further comprises a temperature sensor, wherein the temperature sensor is in contact with the outer ring of the bearing. According to the temperature rising effect of the bearing in the high-rotating-speed state, the bearing box increases the cooling circulation water channel and the bearing temperature monitoring, the periphery of the installation part of the bearing can be effectively cooled through thespecial design of the cooling circulation water channel from bottom to top, the bearing is indirectly cooled, the water channel design can achieve good sealing, and the leakage of cooling liquid is prevented; and the temperature sensor is used, and the bearing outer ring is in contact with the sensor, so that the temperature of the bearing is monitored an fed back in real time, and the function ofdouble protection of the bearing is achieved.

Description

technical field [0001] The invention relates to the technical field of motor test equipment, in particular to a high-speed bearing box used for a motor test bench. Background technique [0002] With the continuous development of the automobile industry, the requirements for new energy motors are getting higher and higher, and the corresponding testing standards are also constantly improving. New energy motor test bench is a special testing equipment for factory test and type test of new energy motors, permanent magnet synchronous motors or asynchronous motors installed on pure electric vehicles or hybrid vehicles and driven by special controllers. Bad directly affects the reliability and practicability of the test results. [0003] Chinese patent document CN205941829U discloses a kind of electric motor test bench, the bearing used in it has the possibility of high-speed operation, but in the high-speed situation, lubricating oil (grease) is used to achieve the purpose of si...

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Problems solved by technology

[0003] Chinese patent document CN205941829U discloses a kind of electric motor test bench, the bearing used in it has the possibility of high-speed operation, but in the high-speed situation, lubricating oil (grease) is used to achieve the purpose of simple heat dissipation, and there is no real-time temperature change for the bearing. As a result, the transmission cannot continue to run at high speeds, or even if it can run for a short time, it is impossible to judge how long it can continue to run

Secondly, the number and arrangement of bearings supporting the rotating shaft are not reasonable enough to carry a large load

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