Online detection device and detection method for fatigue life of motor structural member

Abstract

The invention discloses an online detection device and detection method for fatigue life of a motor structural member. The online detection device comprises a support, a disc, a bearing, a frequency converter, a temperature sensor, an eddy current displacement sensor, a signal collector and a display. The motor to be detected is mounted on the support through a bearing, the frequency converter controls the rotating speed of the motor to be detected, and the temperature sensor detects the temperature of the stator of the motor to be detected. The disc is statically arranged on one side of the motor to be detected, and the eddy current displacement sensor is arranged on the disc. The signal collector collects data of the eddy current sensor and the temperature sensor, and the display is connected with the signal collector. The invention adopts an eddy current displacement sensor and cooperates with a frequency converter to control the rotational speed in real time to achieve the purposeof online detection, so that the staff can detect the data in real time and know the actual state of each stage of the motor.

Description

Technical field [0001] The invention relates to the field of motor detection, in particular to an on-line detection device and a detection method for the fatigue life of motor structural parts. Background technique [0002] The motor can convert electrical energy into mechanical energy, with small size and high efficiency; the motor is very convenient to use and control, with the ability to start, accelerate, brake, reverse, and hold, and can meet various operating requirements; due to its series Advantages, so it is widely used in industrial and agricultural production, transportation, national defense, commerce and household appliances, medical electrical equipment, etc., and it is easy to use. An important link in the development and application of a new motor is to clarify the structural life of the rotor under working conditions. [0003] The existing detection device and detection method check whether the motor is disintegrated by increasing the speed of the motor under test...

AI Technical Summary

Problems solved by technology

[0003] The existing detection device and detection method check whether the motor is disassembled by increasing the speed of the motor to be tested at a constant speed; however, this device and method are not real-time detection of the motor (including stator, rotor, shaft); the limit speed of this motor cannot be obtained ; and there is a danger of blasting at any time during the detection process, causing harm to the detection personnel

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