发明名称 A METHOD AND AN APPARATUS FOR PUSHING PIPES ALONG A PIPE LINE
摘要 A method and an apparatus for pushing forward pipes along a pipe line section by which an apparatus is arranged to be brought down into a manhole connected to the pipe line section, and includes a pushing piston (20, 26) exerting a pushing force on a pipe (8, 12) with support of a holding-up device (2, 18). The pushing piston (20) at its leading end carries rods (27) extending essentially to the rear end of the pushing piston and there carry a pressure abutment (28) for bringing the pipe with it during the forward pushing movement of the piston, said rods (27) aiding in supporting the pipe (8).
申请公布号 AU4203589(A) 申请公布日期 1990.04.02
申请号 AU19890042035 申请日期 1989.08.31
申请人 BERTIL LILJEHAMMAR 发明人 BERTIL LILJEHAMMAR
分类号 E21B19/086 主分类号 E21B19/086
代理机构 代理人
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