H-shaped top coal caving support vertical column and pressing plate fixing support-moving method

Abstract

An H-shaped top coal caving support vertical column and pressing plate fixing support-moving method aims to preventing open weld of a vertical column, a pressing plate and a fixing block of a supportand ensure normal support moving of a support. According to the H-shaped top coal caving support vertical column and pressing plate fixing support-moving method, firstly, a protrusion of an original small fixing block on a base side plate of the support is cut away through oxygen welding, and the original small fixing block is cut to be flush with the base side plate; a through hole is cut in theoriginal small fixing block of the base side plate through oxygen welding, and the size of the through hole is slightly larger than that of the original small fixing block; a long fixing block is embedded into the through hole, and the long fixing block and the interior and the exterior of the base side plate are fixedly connected in an embedment full welding through electric welding; the long fixing block presses a pressing plate on the upper portion of the pressing plate, and the pressing plate is pressed on the upper portion of a circular-arc nest of a vertical column base; a fixing pin penetrates through an upper circular hole of the pressing plate and a upper circular hole of the base side plate in sequence with the long fixing block as a support point, and the vertical column base ofthe support is pressed through the pressing plate; and finally, the base is lifted up through the vertical column, and the moving support is pulled out forwards.

Description

technical field [0001] The invention relates to a method for moving a support of a fully mechanized mining face, in particular to a method for moving a support after welding and fixing a fixing block of a column of an H-type top coal caving support. Background technique [0002] With the advancement of the fully mechanized mining face, the H-type top-coal caving support will move forward with the shearer. During the moving process, the support column will rise and fall back and forth, the base will be lifted by the column, and the support will be pulled forward to complete a working cycle. . The column is mainly based on the fixed block as the fulcrum, and the pressure plate and the fixed pin are mainly used to crush the arc socket of the column on the column. Since the fixed block of the fixed column and the base of the bracket are welded on a plane, it is easy to cause damage to the welded part of the fixed column fixed block after a long time. Force fatigue, resulting in...

AI Technical Summary

Problems solved by technology

The column is mainly based on the fixed block as the fulcrum, and the pressure plate and the fixed pin are mainly used to crush the arc socket of the column on the column. Since the fixed block of the fixed column and the base of the bracket are welded on a plane, it is easy to cause damage to the welded part of the fixed column fixed block after a long time. Force fatigue, resulting in open welding, unable to move or lift the frame

Especially for the ZF6200 support column pressure plate fixing block in the H-type top coal caving support, the support cannot be moved normally.

Analyzing the reasons, one is that the fixing block is flat welded, and the strength is not enough; the second is that the overload operation causes the fixing block of the support column to open welding; the third is that the underground environment is humid and the fixing block is corroded

A variety of reasons cause the fixed block to fall off or be lost, and the pressure plate loses its fulcrum, resulting in the column not being able to effectively lift the base to push the bracket, which brings inconvenience to the team's normal advancement of the working surface, increases the labor intensity of the team's workers, and seriously affects the output.

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