Motor operation monitoring method and device for traction-driven elevator

Abstract

The invention discloses a motor operation monitoring method and device for a traction-driven elevator. The steps of the method include: S1. Real-time monitoring of the running state of the target elevator and the vibration signal on the traction rope; S2. Monitoring the monitored vibration signal Carry out frequency domain analysis, obtain the state of the vibration signal on the traction rope and judge the running state of the motor according to the frequency domain analysis results; S3. According to the monitored running state of the elevator, the state of the vibration signal on the traction rope, and the running state of the motor , to determine whether there is a fault state that the motor does not stop running when the traction rope slips on the traction sheave. The invention has the advantages of simple implementation method, low cost, intelligent monitoring of the failure state of the motor without stopping operation when the traction rope slips on the traction sheave, and high monitoring efficiency and precision.

Description

technical field [0001] The invention relates to the technical field of traction-driven elevators, in particular to a motor operation monitoring method and device for traction-driven elevators. Background technique [0002] The following conditions may occur during the operation of the traction-driven elevator: When the car moves downward, if the counterweight is blocked by obstacles and the motor does not stop running, the traction rope from the traction sheave to the counterweight will be affected. The force is getting bigger and bigger, which will eventually cause the traction rope to slip on the traction sheave; similarly, when the counterweight moves downward, if the car is blocked by an obstacle and the motor does not stop, it will cause the traction sheave to slip. The force on the traction rope to the car is increasing, which eventually causes the traction rope to slip on the traction sheave, that is, when the car or the counterweight moves downward due to obstacles a...

AI Technical Summary

Problems solved by technology

[0002] The following conditions may occur during the operation of the traction-driven elevator: When the car moves downward, if the counterweight is blocked by obstacles and the motor does not stop running, the traction rope from the traction sheave to the counterweight will be affected. The force is getting bigger and bigger, which will eventually cause the traction rope to slip on the traction sheave; similarly, when the counterweight moves downward, if the car is blocked by an obstacle and the motor does not stop, it will cause the traction sheave to slip. The force on the traction rope to the car is increasing, which eventually causes the traction rope to slip on the traction sheave, that is, when the car or the counterweight moves downward due to obstacles and the motor does not stop Fault state, which will affect the safety and reliability of elevator operation

[0003] However, in the prior art, the control of the operation of the traction-driven elevator motor is usually only realized by directly setting the motor running time limiter. The motor running time limiter controls the start and stop of the motor, and the motor running time limiter can only The operation limit of the motor is realized through a fixed time setting method, and it is impossible to recognize the fault state that the traction rope slips on the traction sheave due to obstacles when the car or counterweight moves downward, so it cannot be used in the traction When the rope slips on the traction sheave, the motor is controlled to stop in time, which affects the safe and reliable operation of the elevator, and cannot meet the requirements of the current elevator manufacturing and installation safety standards.

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