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1. 发明申请

WO1997031177A1 JOINING OF TUBE-FORMED EXPANSION BOLT 审中-公开
标题翻译：管形膨胀螺栓的加工
公开(公告)号：WO1997031177A1
公开(公告)日：1997-08-28
申请号：PCT/SE1997000085
申请日：1997-01-21
申请人： ATLAS COPCO ROCK DRILLS AB , KRZYSZTALOWICZ, Daniel , OHLSON, Bo
发明人： ATLAS COPCO ROCK DRILLS AB
IPC分类号： E21D21/00
CPC分类号： E21D21/0033 , E21D21/004 , Y10S285/901
摘要： Tube-formed rock bolt intended for expansion into contact with the wall in a bore hole without stretching the periphery of the rock bolt. The rock bolt comprises an elongated tube (12) with closed cross section. The tube is provided with a longitudinal depressed part (13). End pieces (14, 24) are secured to the ends of the tube. Rock bolts according to the invention can be connected to arbitrary length through screwing them together. The end pieces are provided with axial channels (15, 35) whose peripheries sealingly cooperate through deformation of the material when the rock bolts are screwed together. Through connecting one end (30) of the assembled rock bolt to a high pressure pump (39) the entire assembled rock bolt can be expanded at the same time.
摘要翻译：管状岩石锚杆，用于在不扩张岩石螺栓周边的情况下膨胀成与孔中的壁接触。岩石螺栓包括具有闭合横截面的细长管（12）。该管设置有纵向凹部（13）。端部件（14,24）固定到管的端部。根据本发明的岩石螺栓可以通过将它们拧在一起而连接到任意长度。端部件设置有轴向通道（15,35），当岩石螺栓拧在一起时，其周边通过材料的变形密封配合。通过将组装的岩石锚杆的一端（30）连接到高压泵（39），可以同时扩大整个组装的岩石锚杆。

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