公开(公告)号：US3991577A

公开(公告)日：1976-11-16

申请号：US658054

申请日：1976-02-13

申请人： Jean P. Thevenoux

发明人： Jean P. Thevenoux

IPC分类号： E21D17/00 ,  E21D17/05 ,  E21D17/082 ,  E21D15/14

CPC分类号： E21D17/082 ,  E21D17/003

摘要： This invention concerns a telescopic support cap, e.g. for mining, comprising a main beam element having a support end and an extensible end; a bar slidable relative to, and having one end slidingly connected to, the main element, the other, free end projecting beyond said extensible end; a crank connected at one end by a transverse pivot fixed on the main element at a short distance from the said support end, the other, free end of the crank being shaped for bearing on a timber prop, without other connection; and a hydraulic jack pivoted to the bar and to the crank intermediate the pivotal axis of the latter and its free end, such that the cap is buttressed on actuating the jack by the said free end and by the main element and the crank.

摘要翻译： 本发明涉及伸缩式支撑帽，例如 用于采矿，包括具有支撑端和可延伸端的主梁单元; 一个可相对滑动的杆，一端滑动地连接到主元件，另一个自由端突出超过所述可伸长端; 一个曲柄在一端由与所述支撑端短距离固定在所述主元件上的横向枢轴连接，所述曲柄的另一个自由端被成形为用于支撑在木材支架上而没有其它连接; 以及液压千斤顶，其枢转到杆和曲柄在中间的枢转轴线和其自由端之间，使得帽在由所述自由端以及主要元件和曲柄致动千斤顶时被支撑。