发明名称 Device for drawing out pipe embedded in solid material - has wall abutment plate and draw element guided through pipe
摘要 The machine for drawing a pipe out of solid material using an abutment plate containing a pipe passage opening has a drawing element (13) guided through the pipe (2) whereby a compressive force acting in the axial direction on the pipe (2) can be applied. The drawing element, such as a cable or a multi-sectional tensile rod, is connected to two pressure elements (14 to 20, 21) each acting on one end of the pipe (2). ADVANTAGE - The danger of the emerging pipe splitting is substantially reduced owing to the compensating force acting inside the pipe.
申请公布号 DE3925504(A1) 申请公布日期 1991.01.31
申请号 DE19893925504 申请日期 1989.07.28
申请人 KARL WEISS GMBH & CO, HOCH-, TIEF- UND ROHRLEITUNGSBAU, 1000 BERLIN, DE 发明人 BERGHAUS, FRITZ;SCHWERT, SIEGFRIED, 1000 BERLIN, DE
分类号 B23P19/02;B25B27/02;E21B19/07;E21B19/086 主分类号 B23P19/02
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