ROCK-CRACKING DEVICE, ROCK-CRACKING METHOD, ATTACHMENT FOR ROCK-CRACKING DEVICE, PRESSURE OIL FEEDER FOR ROCK-CRACKING DEVICE, AND WORKING VEHICLE FOR ROCK CRACKING

摘要

PROBLEM TO BE SOLVED: To provide a working vehicle for rock cracking which can improve the efficiency of rock-cracking work.;SOLUTION: The working vehicle for rock cracking is provided with an attachment for a rock-cracking device on the tip of its arm, and a plurality of rock-cracking devices are attached to the attachment. Then the working vehicle for rock cracking is provided with a pressure oil feeder which supplies pressure oil used for driving each rock-cracking device. Each rock-cracking device performs rock cracking by pushing a drilling hole surface by a plurality of pressure parts in a position where it is inserted into the drilling hole, and is provided with a cylinder body and a guide conduit connected to its base end side. Then the rock-cracking device of the working vehicle for rock cracking is used for inserting a plurality of pressure parts into the drilling hole to the point of the first rock-cracking depth and for performing rock-cracking at the depth. Then rock-cracking is performed at the second rock-cracking depth which is deeper than the first rock-cracking depth. Furthermore, rock-cracking by the rock-cracking method is performed at the third rock-cracking depth which is deeper than the second rock-cracking depth.;COPYRIGHT: (C)2008,JPO&INPIT