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The method of current judgment method to prevent accumulative reloading accident of skip

A skip and electric current technology, applied in transportation and packaging, lifting equipment in mines, elevators, etc., can solve problems such as small electric current, and achieve the effect of highlighting safety benefits, avoiding serious harm, and ensuring normal production benefits.

Active Publication Date: 2017-01-04
枣庄矿业(集团)付村煤业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if the lowered skip is not empty (with surplus coal), the current will be smaller than the above fixed value

Method used

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  • The method of current judgment method to prevent accumulative reloading accident of skip
  • The method of current judgment method to prevent accumulative reloading accident of skip
  • The method of current judgment method to prevent accumulative reloading accident of skip

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Experimental program
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Effect test

Embodiment

[0035] 1. Technical principle

[0036] The motor current is used as the basis for judgment. Judging whether the current of the lifting motor is too small, if it is less than a certain value, then it is judged that the skip that has been lowered for loading has not been unloaded, and loading is not allowed.

[0037] The existing conditions of the electrical part of the hoist: the electric control of the winch, the variable current drive device, and the automatic loading and unloading signal system are all programmable intelligent equipment. Among them, the current data of the converter device and the actual loading tonnage data of the skip in the loading and unloading signal system have been transmitted to the electric control PLC of the winch. These two data are important basis for judging the accident. In addition, it is necessary to establish a locking loading signal (allowing / prohibiting loading) of the winch electronic control to the signal system. For the block diagram ...

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PUM

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Abstract

The invention discloses a current judgment method-based method preventing skip accumulating loading accidents. The current judgment method-based method includes that a winch electronic control subsystem, a variable-current drive device subsystem and an automatic loading-unloading signal subsystem are matched. Motor current data of the variable-current drive device and actual skip loading tonnage data of the automatic loading-unloading signal system are sent to a winch electronic PLC (programmable logic controller) for judgment, a judgment result is executed by the loading-unloading signal system, and the method is completed with steps of weight sampling, current sampling, data analysis and logic judgment.

Description

technical field [0001] The invention relates to the field of mining skip loading, in particular to a technology for preventing accumulative and reloading accidents of skips by means of current judgment. Background technique [0002] "Coal Mine Safety and Quality Standardization Rules" clearly stipulates that the lifting of the skip in the main shaft must be fixed-weight loading. That is to say, the preparation warehouse at the lower wellhead must have a weighing device (generally speaking, the warehouse is a quantitative warehouse), and the skip lowered to the lower wellhead must be loaded with the amount of coal that does not exceed the rated lifting load. [0003] Despite the above means, if a certain skip is not unloaded at the upper wellhead (there is residual coal in the skip), it will inevitably be overweight after loading at the lower wellhead. The more residual coal, the more serious the consequences. Seriously threaten the safety of the main hoisting wire rope and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/14B66B17/32
CPCB66B5/145B66B17/32
Inventor 张延伟张瑞君程传印张君勇王海全
Owner 枣庄矿业(集团)付村煤业有限公司