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1. 发明授权

US4068484A Automatic tunnel face hydraulic pressure controlling apparatus in shield type hydraulic tunnel boring system 失效
标题翻译：盾构式液压隧道镗孔自动隧道面液压控制装置
公开(公告)号：US4068484A
公开(公告)日：1978-01-17
申请号：US767037
申请日：1977-02-09
申请人： Yasuyuki Iwamitu , Yoshiaki Uchida , Shigeru Kobayashi , Masamitu Tateno
发明人： Yasuyuki Iwamitu , Yoshiaki Uchida , Shigeru Kobayashi , Masamitu Tateno
IPC分类号： E21D9/13 , E21D9/04 , E21D9/06 , E21D9/12 , E21D9/00
CPC分类号： E21D9/04 , E21D9/093 , E21D9/12
摘要： An apparatus for automatically controlling tunnel face hydraulic pressure in a hydraulic chamber defined by a rotary cutter head and bulkhead in a shield type excavator used in hydraulic tunnel boring system including a pipe for feeding a hydraulic material with a feeding pump from a reservoir to the chamber and a pipe for discharging a mixture of the fed hydraulic material with ground formations excavated by the cutter head from the chamber to the reservoir with a discharging pump. The apparatus substantially comprises a pressure gauge for measuring actual hydraulic pressure in the chamber, a pressure regulating valve in the feeding pipe as disposed close to the chamber, a first pressure regulator in which a predetermined feeding pressure is preset for comparing the actual pressure measured by the gauge with the predetermined feeding pressure and controllably operating the valve responsive to any difference between the pressures compared in the first regulator, and a second pressure regulator in which a predetermined pumping pressure is preset for comparing the actual pressure with the predetermined pumping pressure and controlling pumping rate of the feeding pump responsive to any difference between the pressures compared in the second regulator. The predetermined pumping pressure preset in the second regulator is preferrably made slightly higher than the predetermined feeding pressure preset in the first regulator.
摘要翻译：一种用于在液压隧道掘进系统中使用的屏蔽型挖掘机中由旋转刀头和隔板限定的液压室中的隧道面液压自动控制的装置，包括用于将液压材料与供给泵从储存器供给到室的管以及管道，用于将所输送的液压材料与由切割头从所述腔室挖掘的地层的混合物排出到具有排出泵的储存器。该设备基本上包括用于测量腔室中的实际液压的压力计，靠近腔室设置的进料管中的压力调节阀，其中预设有预定进料压力的第一压力调节器，用于将由所述量规具有预定的进料压力，并且响应于在第一调节器中比较的压力之间的任何差异可控地操作所述阀;以及第二压力调节器，其中预设泵送压力，用于将实际压力与预定的泵送压力进行比较，并且控制响应于在第二调节器中比较的压力之间的任何差异，进料泵的泵送速率。优选地，预设在第二调节器中的预定抽吸压力略高于在第一调节器中预设的预定进给压力。

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