公开(公告)号：US4149753A

公开(公告)日：1979-04-17

申请号：US811352

申请日：1977-06-29

申请人： Rolf Stoltz ,  Wilhelm Stoltefuss ,  Teja Rostowski

发明人： Rolf Stoltz ,  Wilhelm Stoltefuss ,  Teja Rostowski

IPC分类号： E21C35/18 ,  E21C35/197 ,  E21C25/10

CPC分类号： E21C35/197 ,  E21C2035/1826

摘要： A cutter bit for use with a cutting or winning machine has a generally cylindrical shank and a generally conical cutting head. The shank is rotatably received, in use, within a matched bore in a bit holder. The shank is formed with a reduced-diameter portion on which is rotatably mounted a bearing ring. A compressible locking ring surrounds and grips the bearing ring so that, in use, the locking ring frictionally engages the bore in the bit holder so as to restrain relative axial movement between the cutter bit and the holder.

摘要翻译： 用于切割或获胜机器的切割刀头具有大致圆柱形的柄和大致圆锥形的切割头。 柄在使用中可旋转地接收在位保持器中的匹配孔内。 柄部形成有直径减小的部分，可旋转地安装有轴承环。 可压缩锁定环围绕并夹紧轴承环，使得在使用中，锁定环摩擦地接合钻头夹持器中的孔，以便限制切割刀头和保持器之间的相对轴向运动。

公开(公告)号：US4095436A

公开(公告)日：1978-06-20

申请号：US779851

申请日：1977-03-21

申请人： Herbert Heitkamp ,  Rolf Stoltz

发明人： Herbert Heitkamp ,  Rolf Stoltz

IPC分类号： E21D9/06 ,  E01G3/00

CPC分类号： E21D9/0692

摘要： Apparatus is provided for controlling the advance of a tunnel drive shield. The drive shield is of the type having a plurality of elongate implements (or planks) which are supported and guided on a frame. Hydraulic rams are provided for moving the planks relative to the frame. The control apparatus comprises hydraulic ram means, which act between the frame and the permanent tunnel lining, and means for varying the pressure of hydraulic fluid applied to said hydraulic ram means. The frame can be advanced by applying hydraulic fluid to said hydraulic ram means and by simultaneously applying hydraulic fluid to at least one of said hydraulic rams. The direction of frame advance is controlled by varying the ratio of the pressures of the hydraulic fluid applied to said hydraulic ram means and to said at least one hydraulic ram.

摘要翻译： 提供了用于控制隧道驱动屏蔽的前进的装置。 驱动屏蔽是具有多个在框架上被支撑和引导的细长工具（或木板）的类型。 提供液压柱塞用于相对于框架移动木板。 控制装置包括作用在框架和永久隧道衬里之间的液压柱塞装置，以及用于改变施加到所述液压压头装置的液压流体的压力的装置。 可以通过将液压流体施加到所述液压柱塞装置并且同时向至少一个所述液压柱塞施加液压流体来使框架前进。 通过改变施加到所述液压压头装置的液压流体和所述至少一个液压油缸的压力比来控制框架前进的方向。