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    HYDRAULIC CONTROL DEVICE AND WORK MACHINE EQUIPPED WITH SAME
    13.
    发明公开
    HYDRAULIC CONTROL DEVICE AND WORK MACHINE EQUIPPED WITH SAME 有权
    液压控制装置和工作机器，

    公开(公告)号：EP2770219A4

    公开(公告)日：2015-07-01

    申请号：EP12842326

    申请日：2012-10-15

    申请人： KOBE STEEL LTD ,  KOBELCO CONSTR MACH CO LTD

    发明人： NANJO TAKAO ,  SENOO SABURO ,  GOTO NAOKI

    IPC分类号： F15B21/14 ,  E02F9/22 ,  F15B11/02

    CPC分类号： E02F9/2217 ,  E02F9/2091 ,  E02F9/226 ,  E02F9/2285 ,  E02F9/2289 ,  E02F9/2292 ,  E02F9/2296 ,  F15B13/06 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/253 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/88

    摘要： Provided is a hydraulic control device for which it is possible to suppress the occurrence of cavitation in a regenerative motor that regenerates the energy of a hydraulic actuator and to reduce the loss of power, and an operating machine having the same. The hydraulic control device includes: a recovery oil passage (R7) for recovering, into a tank (T), hydraulic fluid derived from a hydraulic actuator (11, 12) and a hydraulic pump (16, 17); a regenerative motor (18) that rotates an output shaft (7a) of an engine (7) in response to a supply of the hydraulic fluid and is driven to rotate by rotation of the output shaft (7a) of the engine (7); a regenerative oil passage (R8) for guiding return oil from a boom cylinder (12) to the regenerative motor (18) without passing the return oil through the recovery oil passage (R7); a coupling oil passage (R9) that couples the recovery oil passage (R7) and the regenerative oil passage (R8) to each other; and a regeneration-side check valve (21) that is provided on the coupling oil passage (R9), and allows the hydraulic fluid to flow from the recovery oil passage (R7) toward the regenerative motor (18), and moreover restricts the hydraulic fluid from flowing from the regenerative motor (18) toward the recovery oil passage (R7).

    UPPER ROTATING BODY AND HYBRID CONSTRUCTION MACHINE WITH SAME
    16.
    发明公开
    UPPER ROTATING BODY AND HYBRID CONSTRUCTION MACHINE WITH SAME 有权
    上身和SO车削混合动力车

    公开(公告)号：EP2682529A4

    公开(公告)日：2014-12-10

    申请号：EP12755078

    申请日：2012-02-28

    申请人： KOBELCO CONSTR MACH CO LTD

    发明人： GOTO NAOKI

    IPC分类号： E02F9/00 ,  E02F9/08 ,  E02F9/20

    CPC分类号： E02F9/2075 ,  E02F9/0858 ,  E02F9/0883

    摘要： To ensure that an electric power cable and a signal cable are laid easily over short distances while suppressing an effect of electromagnetic wave noise on the signal cable, an electric power cable 22 is laid along a route that passes through only a right outside space S2 in a lower position than an upper end of a right vertical plate 16, while a signal cable 23 is laid along a bypass route that extends from a generator motor 13 in a lower position than the upper end of the right vertical plate 16, passes through a rear portion cable insertion hole 25 into an intermediate space S1 between the right vertical plate 16 and a left vertical plate 15, and returns to the right outside space S2 from the intermediate space S1 through a front portion cable insertion hole 24.