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1. 发明授权

US4848963A Earth pressure shield 失效
标题翻译：地压屏蔽
公开(公告)号：US4848963A
公开(公告)日：1989-07-18
申请号：US157848
申请日：1988-02-18
申请人： Siegmund Babendererde , Hans-Jurgen Flunker , Gert Wittneben , Otto Braach
发明人： Siegmund Babendererde , Hans-Jurgen Flunker , Gert Wittneben , Otto Braach
IPC分类号： E21D9/08 , E21D9/087
CPC分类号： E21D9/087
摘要： The earth pressure shield for a tunnel and/or gallery excavator has a front working compartment formed by a separating wall having a digging tool and an annular reinforcing space substantially triangular in cross section positioned directly in front of the separating wall. So that an extensive restructuring of the machine is not necessary when moving from soft earth to hard ground, the annular reinforcing space is provided with a lower fluid feeder, a controlled upper pressurized air feeder, a plurality of fluid conductor pipes which are guided from below to an upper fluid outlet opening into the working compartment, and a fluid level controller. The invention is based on the consideration that a reliable and satisfactory support of the local front wall is only possible when the local front wall in the vicinity of the roof can be supplied with a fluid.
摘要翻译：用于隧道和/或廊道挖掘机的地面压力屏蔽具有由具有挖掘工具的分隔壁和直接位于分隔壁前方的横截面基本上三角形的环形加强空间形成的前工作室。因此，从软土地到硬地面移动时，机器不需要进行大范围的重组，环形加强空间设置有下流体供给器，受控上加压空气供给器，从下方引导的多个流体导管到进入工作室的上流体出口，以及液位控制器。本发明基于这样的考虑，即当屋顶附近的局部前壁可以被供应流体时，本地前壁的可靠和令人满意的支撑是可能的。

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