COUPLING APPARATUS FOR PRECISION EXPLOSIVE TUBES

摘要

The present invention relates to a coupling apparatus for precision explosive tubes in which the precision explosive tubes to be used in blasting work are coupled to the front and back of the coupling apparatus. The coupling apparatus is characterized in that it comprises: a plurality of cylindrical main bodies arranged such that any one of the bodies can be spaced apart from or can move closer to one other body; a partition wall arranged in any one of the bodies so as to partition an internal space of any one of the bodies; and an extensible support unit which is arranged among the plurality of main bodies so as to interconnect the main bodies such that the extensible support unit forms a cylinder together with the bodies when any one of the bodies is spaced apart from one other body and the extensible support unit extends radially when any one of the bodies gets closer to one other body. Thus, the coupling apparatus for the precision explosive tubes according to the present invention enables the precision explosive tubes to be easily positioned at the true center of a blasting hole, thereby increasing the efficiency of a blasting explosion.