发明名称 SHIELD MACHINE
摘要 PROBLEM TO BE SOLVED: To provide a shield machine capable of controlling stroke of two hydraulic jacks for driving a beam cutter accurately. SOLUTION: In this shield machine, stroke set values of the first and second hydraulic jacks 40a, 40b are decided based on rotation angles of a cutter frame 8 detected by a rotation angle detection means 53, respectively, opening degrees of first control valves 48a, 50a are controlled to make deviation of a stroke detected value of the first hydraulic jack 40a detected by a first stroke detection means 54a from the stroke set value of the first hydraulic jack 40a zero, and opening degrees of second control valves 48b, 50b are controlled to make deviation of a stroke detected value of the second hydraulic jack 40b detected by a second stroke detection means 54b from the stroke set value of the second hydraulic jack 40b zero. COPYRIGHT: (C)2009,JPO&INPIT
申请公布号 JP2008240458(A) 申请公布日期 2008.10.09
申请号 JP20070085414 申请日期 2007.03.28
申请人 IHI CORP;OKUMURA CORP 发明人 YOSHIDA YUZURU;SUDO HIROSHI;MURAYAMA HIROSHI;YOSHIKAWA TAKAYUKI;NAKANE TAKASHI;TANAKA MASAHIKO;ASANO TAKESHI
分类号 E21D9/087 主分类号 E21D9/087
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