A method for monitoring the speed of hoisting ropes in a rope hoisting system

A hoisting system and speed monitoring technology, which is applied in the field of speed monitoring of hoisting ropes in the rope hoisting system, can solve problems such as inconvenient installation, complex structure, and inability to prevent accidents in advance, and achieve high safety and good monitoring performance.

CN108100793BInactive Publication Date: 2019-09-03CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-09-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for monitoring the speed of a lifting rope in a rope lifting system. Each rope is provided with a signal emitter and a signal receiver, wherein the position of the signal transmitter and the position of the signal receiver are opposite, the emission signal of the signal transmitter can completely cover the width of the rope, and the processor is used for carrying out twisting body bulge identification according to the transmission signal of the signal transmitter and the received signal difference of the signal receiver, and calculating the running speed of therope; the processor is used for carrying out feature extraction and time-frequency analysis on the rope according to the received signals of the signal receiver, the vibration frequency of the rope is obtained, the tension of the rope is calculated, and the movement stage of the rope is judged. According to the method, the operation speed of the rope lifting system can be monitored in real time according to the texture identification of the lifting rope in the lifting system, and the rope lifting system can be prevented from being stuck, overspeed or broken. In addition, the problems of the operation efficiency of the system and the like are solved, and the safety and the normal work of the rope lifting system can be guaranteed.
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Description

technical field

[0001] The invention relates to a speed monitoring method of a hoisting rope in a rope hoisting system, which is suitable for speed monitoring and motion characteristic identification of the hoisting rope in mine hoisting. Background technique

[0002] Coal occupies an important proportion in my country's energy use. With the increasing coal mining, the demand for mine hoisting equipment is also increasing, and the safe operation of mine hoisting is also more strictly regulated. At the same time, the safety devices that ensure the safe and reliable operation of the hoisting system are also Gradually increase. Due to dangerous conditions such as can jamming, overspeed running and broken ropes may occur during the operation of the lifting system, safety protection devices such as anti-drop devices, speed limiting devices and braking devices have appeared in mine hoisting, but these safety protection devices It can only play the role of after-the-fact protection...

Examples

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] A method for monitoring the speed of a hoisting rope in a rope hoisting system, the rope 2 is a periodically twisted body, along the length direction of the rope 2, the texture of the rope 2 in each period length is the same, and there are m pieces in each period length The twisted body is raised, m is a positive integer; such as figure 1 As shown, the rope 2 is connected to the load after bypassing the sky wheel, and a signal transmitter 1 and a signal receiver 3 are set for each rope 2. The position of the signal transmitter 1 and the signal receiver 3 is facing each other. The transmitting signal can completely cover the width of the rope 2; the signal transmitter 1 and the signal receiver 3 are the signal transmitter and the signal receiver of the light curtain laser displacement sensor respectively. In order to ensure the accuracy of monitoring the rope 2, ...