公开(公告)号：US4041715A

公开(公告)日：1977-08-16

申请号：US719144

申请日：1976-08-31

申请人： Willy Watermann ,  Walter VON DER Linden

发明人： Willy Watermann ,  Walter VON DER Linden

IPC分类号： E21D23/00 ,  E21D23/04 ,  E21D23/08 ,  E21D15/44

CPC分类号： E21D23/086 ,  E21D23/0034 ,  E21D23/0436

摘要： A pit prop has a floor-engaging foot, at least one arm pivoted at the rear of this foot and extending forwardly, a roof-engaging shield carried at the front end of this arm, and at least one ram extending vertically between the arm and the foot for pressing the shield against the roof and the foot against the floor. A hydraulic ram has its rear end pivoted at the rear end of the foot and its front end pivoted on the rear end of a rigid link whose front end in turn is pivoted on the face conveyor. The rear end of this link is slidable in and pivoted on the foot. A second link has its front end pivoted on the rear end of the main link and its rear end bearing vertically down against the foot but slidable therealong. A short lifting ram has its rear end pivoted on the rear end of the second link and its front end pivoted on the rear end of the main link above the pivot for the other displacement ram pivoted on this link. Thus expansion of this lifting ram raises the front end of the foot of the pit prop off the floor.

摘要翻译： 凹坑支架具有地板接合的脚，至少一个臂在该脚的后部枢转并且向前延伸，在该臂的前端承载的屋顶接合屏蔽件，以及至少一个在臂和 用于将屏蔽物抵靠屋顶和脚抵靠在地板上的脚。 液压油缸的后端在脚的后端枢转，其前端枢转在刚性连杆的后端，其前端又在面传送器上枢转。 该连杆的后端可滑动并在脚上枢转。 第二连杆的前端枢转在主连杆的后端，其后端垂直向下靠着脚，但是可以沿着它滑动。 短的升降夯具有其后端在第二连杆的后端枢转，并且其前端枢转在枢轴上方的主连杆的后端，以便枢转在该连杆上的另一位移夯。 因此，这种升降柱的膨胀将坑支脚的前端从地板上升起。

公开(公告)号：US6056481A

公开(公告)日：2000-05-02

申请号：US923568

申请日：1997-09-04

申请人： Willy Watermann ,  Walter von der Linden ,  Wilfried Weigel

发明人： Willy Watermann ,  Walter von der Linden ,  Wilfried Weigel

IPC分类号： E21D23/16 ,  E21D23/26 ,  E12D15/44

CPC分类号： E21D23/26 ,  E21D23/16

摘要： According to the invention, monitoring the load on hydraulic powered shield supports in underground use is performed by using the controller (13) serving for extraction control, which is equipped with microelectronics for load monitoring and load control, the components of the powered shield support being assigned sensors (14 to 18) whose electric measured values are used by the controller (13) for evaluating the measured signals and for driving the hydraulic rams (6, 7) and/or the angle cylinder (11) assigned to the powered shield support. The load control is preferably designed here in such a way that the critical load situations "one-sided loading" and/or "tip-toeing" are detected as early as during the setting operation, with the aid of appropriate sensors, and are rendered non-damaging in their effect by appropriately driving the hydraulic rams and/or the angle cylinder.

摘要翻译： 根据本发明，通过使用用于提取控制的控制器（13）来监测地下使用中的液压动力屏蔽支架上的负载，该控制器（13）装备有用于负载监控和负载控制的微电子，所述动力屏蔽支架的部件为 分配的传感器（14至18），其电测量值由控制器（13）用于评估测量信号并用于驱动分配给动力屏蔽支撑件的液压柱塞（6,7）和/或角筒（11） 。 优选地在这里设计负载控制，使得在设置操作期间借助于适当的传感器来检测临界负载情况“单侧装载”和/或“尖端趾”，并且被呈现 通过适当地驱动液压柱塞和/或角度气缸而不损害其效果。