公开(公告)号：US4056036A

公开(公告)日：1977-11-01

申请号：US666633

申请日：1976-03-17

申请人： Gunther Kamann ,  Jurgen Krahe ,  Ulf Zischinsky ,  Wilhelm Gotze

发明人： Gunther Kamann ,  Jurgen Krahe ,  Ulf Zischinsky ,  Wilhelm Gotze

IPC分类号： E02D5/80 ,  E21D20/02 ,  E21D21/00 ,  F16B13/04 ,  F16B31/02

CPC分类号： E21D20/021 ,  E02D5/80 ,  E21D21/0033

摘要： An anchor assembly or rockbolt for mounting in a borehole in a rock comprises an outer element which is secured proximal to the mouth of the borehole and an inner element which is secured well inside the borehole. The inner and outer elements are connected together in such a manner as to allow mutual limited shifting thereof without disconnection only on stressing of one of the elements relative to the other beyond a predetermined limit. To this end the outer element may be provided with a piston-like inner end that is slidable against a friction coating within a tubular inner element. It is also possible to form the inner and outer elements as separable tube sections interconnected by means of a central rod having a pair of pistons each received in a respective one of the sections and slidable therein on a tight friction lining thereof.

摘要翻译： 用于安装在岩石钻孔中的锚固组件或摇杆，包括靠近钻孔口附近固定的外部元件，以及内部元件，其牢固地固定在井眼内部。 内部和外部元件以这样的方式连接在一起，以便仅在其中一个元件相对于另一个元件的应力超过预定极限时才允许相互限制的移位而不断开。 为此，外部元件可以设置有能够抵靠管状内部元件内的摩擦涂层滑动的活塞状内端。 也可以通过具有一对活塞的中心杆互相连接的可分离的管段，每个活塞都容纳在相应的一个部分中，并在其紧密的摩擦衬里上可滑动。