公开(公告)号：US3672174A

公开(公告)日：1972-06-27

申请号：US3672174D

申请日：1970-09-08

申请人： HANSJEACKIM VEN HIPPEL

发明人： HIPPEL HANSJEACKIM VEN

IPC分类号： E21D23/00 ,  E21D23/22 ,  E21D11/16

CPC分类号： E21D23/22 ,  E21D23/0017

摘要： A walking mine roof support wherein one or more roof engaging caps are pivotable on the upper end of at least one extendable pit prop which is mounted on the floor engaging base. Balancing rams connect the rear ends of the caps with the base or such rams carry bars which are movable against the roof behind the caps. The props and the rams are operated by a hydraulic control system in response to signals from pressure gauges mounted on the front and rear ends of the caps. Such signals indicate changes in pressure which the mine roof exerts against the respective ends of the caps.

摘要翻译： 一种行走的矿顶支撑件，其中一个或多个屋顶接合盖可在安装在地板接合基座上的至少一个可延伸的凹坑支撑的上端枢转。 平衡的公柱将盖子的后端与基座连接，或者这样的公柱带有可抵靠盖子后面的屋顶的杆。 道具和公柱由液压控制系统操作，以响应来自安装在盖的前端和后端的压力计的信号。 这种信号表示矿山屋顶对盖的相应端部施加的压力变化。