An automatic protection method for the automatic protection device of the walking index automatic protection device for the hoisting and loading trolley of the blast furnace

Abstract

The invention provides a material-loading trolley slipping index automatic protective device of a blast furnace winch. The material-loading trolley slipping index automatic protective device comprises a trolley slipping protecting device, wherein the trolley slipping protecting device comprises a position encoder, a winch frequency converter and a PLC. The position encoder is connected with a pulse encoder interface of a CUVC plate of the winch frequency converter, an output interface of the CUVC plate of the winch frequency converter is connected with a PLC input interface, original manual adjustment of the material-loading trolley parking position is changed into full-automatic adjustment through the added trolley slipping protecting device, the automation degree and the control accuracy of a winch system are improved, and the winch system fault rate is reduced. The problem that a material-loading trolley cannot automatically control the tightness of an internal contracting brake device is effectively solved, and the problem of blast furnace damping down caused by material-loading faults is solved. The material-loading trolley can continuously perform material loading, the system tends to stability, the molten iron yield and the quality of the same type iron are improved, the blast furnace situation is stabilized, and certain economic benefit is further increased.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an automatic protection method for an index braking protection device for a hoisting and loading trolley walking a car for a blast furnace. Background technique [0002] The original blast furnace hoisting system does not have a walking car index protection system for the loading trolley. During the loading process, the hoisting motor will pull the trolley up and down according to the settings of the inverter system parameters, and stop the trolley at a fixed position. However, due to the looseness of the brake device of the winch motor after a period of use, the problem that the brake device cannot hold the trolley often occurs, and it is necessary to contact the electrician on duty to deal with it. This situation will not only affect the normal progress of feeding, but also cannot carry out automatic control and adjustment, and cannot solve the problem before the failure occ...

AI Technical Summary

Problems solved by technology

However, due to the looseness of the brake device of the winch motor after a period of use, the problem that the brake device cannot hold the trolley often occurs, and it is necessary to contact the electrician on duty to deal with it

This situation will not only affect the normal progress of feeding, but also cannot carry out automatic control and adjustment, and cannot solve the problem before the failure occurs, resulting in great hidden dangers

Considering the instability of the brake system, in the past, the tightness of the brake could only be adjusted based on experience. If it was too tight, the trolley could not be pulled, and if it was too loose, it would not be able to hold the trolley. Therefore, there were hidden dangers in production.

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