Winch alarm device for mining

Abstract

The invention provides a winch alarm device for mining. A measuring device comprises a velocity sensor, a current sensor, a velocity comparator, a current comparator, a logic circuit, a timer and an alarm, wherein the velocity sensor is connected with a rotating shaft of a motor in a winch, the current sensor is arranged in an excitation circuit of the motor in the winch, the velocity comparator is connected with the velocity sensor, the current comparator is connected with the current sensor, the velocity comparator and the current comparator are respectively connected with the logic circuit, the timer is connected with the logic circuit, and the alarm is connected with the timer. According to the winch alarm device for the mining, when a condition of heavy load unloading of the winch occurs, an alarm signal is generated to remind a worker operating the winch of taking corresponding measures, so that production efficiency is improved. Meanwhile, safety accidents are prevented from occurring, and guarantee is provided for safety production operation.

Description

technical field [0001] The invention relates to an alarm control technology, in particular to an alarm device for a mine winch. Background technique [0002] During mineral mining, a lifting device is provided, through which the mined minerals are lifted from the mining main shaft to the ground. As a lifting device, the multi-rope friction winch has been widely used in mineral mining. [0003] The multi-rope friction winch includes the main drum, rope, motor and skip, etc. The rotating shaft of the motor is connected to the main drum, the rope is wound on the main drum, and the two ends of the rope are respectively connected to the skip, which is used to load the to-be-lifted mineral. [0004] In the existing winch control system, the main drum is driven to rotate in different directions by controlling the rotation direction of the motor shaft, so that the skips connected to both ends of the rope move in different directions, and the two skips are alternately lifted from th...

AI Technical Summary

Problems solved by technology

[0006] However, when unloading minerals, because the mined minerals may be relatively humid or contain a large amount of water, when such minerals are loaded in the skip and lifted to the ground, due to the high underground temperature, and if the ground temperature is relatively high in winter In the low case, part of the minerals loaded in the skip is likely to be frozen in the skip or due to the high viscosity of the load, this part of the minerals is not easy to be unloaded, so incomplete unloading will occur In addition, when loading minerals into another skip, it may not be fully loaded

[0007] If most of the minerals in the skip that should have been unloaded have not been unloaded due to the above reasons, and at the same time, when the other skip that should have been loaded with minerals is only loaded with a small amount of minerals, continuing to run will lead to heavy-duty unloading In the case of severe heavy loads, not only will the production efficiency be reduced, but it will also cause the hoist to lose control and cause major production accidents

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