MUD GUN STROKE BAR CONSTRUCTED SUCH THAT IT IS MOVABLY ATTACHED TO OR DETACHED FROM UPPER PORTION OF MUD GUN BODY TO ACCURATELY FORM TAP HOLE SURFACE AT WORKING POINT

摘要

PURPOSE: To provide a mud gun stroke bar for easily forming blast furnace tap hole, wherein the mud gun stroke bar is capable of forming the tap hole surface stably and optimally by maintaining a working point at all times and prevents collapse of the tap hole surface by imparting buffer function to the stroke bar itself during rotation of the mud gun, thereby reducing rotary speed of mud gun. CONSTITUTION: The mud gun stroke bar for easily forming blast furnace tap hole comprises a fixing protrusion projectingly formed on a part of the body of a mud gun; a holder(210) inserted and fixed to the fixing protrusion; a stroke housing(200) fixed to the holder and formed in a rectangular cylinder shape; a moving block(220) which is axially fixed to the rotary shaft in such a way that the moving block is vertically rotated by a rotary shaft(224) after one end of the moving block is partially inserted into the stroke housing, and on the rear surface of which a worm gear(222) is installed; an angle control rod(240) which is penetratingly fixed to the stroke housing perpendicularly to the rotary shaft, and at the center of length of which a worm(242) engaged with the worm gear is installed; and an operation rod(230) which is inserted into the moving block such that the operation rod is elastically buffered, and on a front end of which a pressing member(234) is installed.