发明名称 GROUND PERFORATION DEVICE HAVING CASING FOR GUIDE
摘要 The purpose of the present invention is to provide a ground punching device using a casing as a leader which facilitates installation of equipment or construction. The present invention has a simple structure, which reduces costs, and facilitates transfer of equipment as the existing leader which is heavy and has a long length is not needed. The ground punching device includes a heavy equipment member (10); an auger (20); a bit (40); a casing (50); a guide (60); and a guide fixing unit (70).
申请公布号 KR20140129882(A) 申请公布日期 2014.11.07
申请号 KR20130048784 申请日期 2013.04.30
申请人 NO, JI YUN 发明人 KIM, TAE WOO;NO, JI YUN
分类号 E21B3/02;E02F3/06 主分类号 E21B3/02
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