Drill anchor for underground mining and tunnelling,申请号DE19944445626-传众专利搜索

Drill anchor for underground mining and tunnelling

申请公布号：DE4445626(A1)

申请号：DE19944445626

申请日期：1994.12.21

申请公布日期：1996.06.27

申请人：

F. WILLICH BERG- UND BAUTECHNIK GMBH + CO, 44379 DORTMUND, DE

发明人：KASSELMANN, JOCHEN, DIPL.-ING., 45964 GLADBECK, DE;SCHAUERTE, WILHELM, 59394 NORDKIRCHEN, DE

分类号：E21D21/00;(IPC1-7):E21D20/02

主分类号：E21D21/00

摘要：<p>The anchor (1) is assembled as a threaded anchor bar (2) from hollow drill rod sections (5,7) interconnected by coupling sockets (6). On the borehole side it has a drill crown (4) with rinsing apertures, and on the roadway side a clamping and slide head (8), while a slide jacket (9) is located over a preset length. In a preset spacing between the drill crown and the slide head or jacket is integrated a swelling packer (10) in the anchor bar, surrounded by a swelling jacket. It contains a swelling valve, blocking against the intermediate space, in a support tube for stable transmission of the anchor tensile forces.</p>