Subway wheel reversal detection device and method

Abstract

The invention discloses a subway wheel reversal detection device and method. The detection device includes a current transformer, a current transmitter, a current control instrument, a controller and an alarm that are electrically connected in sequence, and the current transformer and a motor on the wheel The output cables are connected to obtain the AC current signal of the output cable of the motor on the wheel; the current transmitter is used to convert the AC current signal obtained by the current transformer into a DC current signal; the current control instrument is used to judge the output of the current transmitter Whether the DC current signal exceeds the alarm limit range, if it is judged to be yes, an alarm signal is sent to the controller, otherwise, no alarm processing is performed; the controller is used to control the alarm to send out an alarm prompt after receiving the alarm signal. The invention also discloses a detection method based on the above-mentioned subway wheel reversal detection device. The invention can conveniently and accurately detect the wheel reversal, and is beneficial to improve the detection efficiency.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a device and method for detecting subway wheel reversal. Background technique [0002] When the subway wheels reverse, if it is not detected in time, it will cause great damage to electrical components such as drive motors, gearboxes, cables, etc., and even cause short circuit damage to the motor due to excessive current. In the prior art, the following two methods are usually used to detect whether the wheels are reversed. One way is: the driver judges by experience. The problem is that the detection accuracy of this method is low; another method is: set up the whole train with a frame, and then start it to detect whether there is any wheel reversal. This method is inconvenient to operate and requires more time and manpower. less efficient. Therefore, the existing detection methods cannot conveniently and accurately detect wheel rotation, and the detection efficiency is l...

AI Technical Summary

Problems solved by technology

[0002] When the subway wheels are reversed, if it is not detected in time, it will cause great damage to the electrical components such as the drive motor, gearbox, cables, etc., and even cause short-circuit damage to the motor due to excessive current

In the prior art, the following two methods are usually used to detect whether the wheels are reversed. One way is: the driver judges by experience. The problem is that the detection accuracy of this method is low; another method is: set up the whole train with a frame, and then start it to detect whether there is any wheel reversal. This method is inconvenient to operate and requires more time and manpower. less efficient

Therefore, the existing detection methods cannot perform convenient and accurate detection of wheel reversal, and the detection efficiency is low, which cannot meet the detection requirements

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