Method and device for detecting heavy-load lowering of main shaft hoister

Abstract

The invention relates to a method and a device for detecting heavy-load lowering of a main shaft hoister, belonging to a method and a device for detecting lowering of a hoister. The device for detecting the heavy-load lowering of the main shaft hoister comprises a detection circuit, a torque detection processor and a control processing circuit. The output end of the detection circuit is connectedwith the input end of the torque detection processor. The output end of the torque detection processor is connected with the input end of the control processing circuit. The detection circuit is mainly used for detecting the rotation speed and the torque of a motor and outputting to the circuit of the torque detection processor after photoelectric isolation. A load torque is obtained after a torque signal is processed in a torque processor. A load torque signal is output to the control processing circuit. The control processing circuit obtains a related logic control signal after processing the load torque signal, and outputs the obtained related logic control signal. The heavy-load lowering detection of the main shaft hoister is realized by using a torque detecting method. Compared with the prior art, the device is high in precision, simple in structure and convenient to operate; and the device is applied to different types of hoisters.

Description

technical field [0001] The invention relates to a hoist detection method and a detection device, in particular to a main shaft hoist heavy-load lowering detection method and detection device. Background technique [0002] The over-rolling and over-speed accidents caused by the heavy-load lowering of the mine hoist are an important factor that endangers mine safety production. The harm of over-rolling accidents is very great. When stopping, the anti-collision beam on the well must block the cage, otherwise the cage will impact key facilities such as sky wheel and derrick, and the consequences will be disastrous. Therefore, a variety of overload detection and protection measures have been taken in the mine hoisting system to avoid such accidents. At present, the measures adopted in China mainly start with the peripheral equipment of the system, and set up monitoring and alarm devices for the peripheral equipment of the system. For example, add support points on the upper fra...

AI Technical Summary

Problems solved by technology

Although this type of measure is simple in principle and low in cost, it has its own shortcomings, the accuracy is not high enough, and different types of hoists require different transformation plans for the installation of peripheral equipment, which has caused an economic burden on the enterprise.

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