Draw quick shutoff perforation plugging ware of expanding

The utility model belongs to an engineering blasting porthole choked technique field, a difficult problem for solving the quick shutoff of porthole provides a draw quick shutoff perforation plugging ware of expanding. A section of thick bamboo is split for the cylinder type to spalling section of thick bamboo one end, and one end is the circular cone type and supports a section of thick bamboo, and the cylinder type splits a section of thick bamboo towards the big gun hole bottom, and the surface is established backward in the bayonet of falling of big gun hole bottom, offers the precracking that the circular cone type that extends to supported section of thick bamboo lateral wall towards big gun hole bottom one side circumference interval, major diameter that the circular cone type supported a section of thick bamboo is with cylindrical to split a diameter the same, and the slide opening is seted up to the bottom, pull rod stopper top is big cone, and the bottom is little cone, and is middle for the central