METHOD FOR PUSHING LINE PASSING ROD OR PIPE INTO CONDUIT AND SUPPLY DEVICE THEREFOR

摘要

PROBLEM TO BE SOLVED: To push a line passing rod into a conduit more surely. SOLUTION: In pushing a line passing rod 3 into a conduit 1, the line passing rod 3 is turned in the direction of an arrowhead A while the line passing rod 3 is being pushed into or when pushing-in of the line passing rod 3 is stopped. As a result, the front end of the line passing rod 3 acts violently randomly so as to be put in a narrow clearance, thus preventing pushing-in from being failed.