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127 条记录 (耗时 0.027 秒)

    Steering system for engineering vehicle
    1.
    发明授权
    Steering system for engineering vehicle 失效
    工程车辆转向系统

    公开(公告)号：US07891458B2

    公开(公告)日：2011-02-22

    申请号：US12303288

    申请日：2007-12-07

    申请人： Kazunori Nakamura ,  Tsuyoshi Nakamura ,  Kouji Ishikawa ,  Hiroyuki Azuma ,  Kentarou Itoga

    发明人： Kazunori Nakamura ,  Tsuyoshi Nakamura ,  Kouji Ishikawa ,  Hiroyuki Azuma ,  Kentarou Itoga

    IPC分类号： B62D5/06

    CPC分类号： B62D5/075 ,  E02F9/225

    摘要： A priority valve 7 is disposed between a hydraulic pump 2 and a steering valve 4 and is used to supply priority steering cylinders 103a and 103b with pressurized oil discharged from the hydraulic pump 2 by controlling the differential pressure across a meter-in hydraulic line of the steering valve 4 such that the differential pressure is kept at a target value. A pressure sensor 31 for detecting the load pressures of the steering cylinders 103a and 103b is provided. On the basis of the detected load pressures, the target value set for the priority valve 7 is modified by devices including a controller 32, a solenoid valve 33, a pilot hydraulic line 29, and a pressure receiving unit 24c of the priority valve 7. The above configuration enables suppression of a shock occurring at the start of turning of the steering wheel.

    摘要翻译： 优先阀7设置在液压泵2和转向阀4之间，并且用于通过控制液压泵2的流入液压管路中的压差来向液压泵2排出的加压油供应优先转向缸103a和103b。 转向阀4使差压保持在目标值。 设置有用于检测转向缸103a，103b的负载压力的压力传感器31。 基于检测到的负载压力，通过包括优先阀7的控制器32，电磁阀33，先导液压管路29和压力接收单元24c的装置来改变对优先阀7设定的目标值。 上述结构能够抑制在方向盘转动开始时发生的冲击。

    STEERING SYSTEM FOR ENGINEERING VEHICLE
    2.
    发明申请
    STEERING SYSTEM FOR ENGINEERING VEHICLE 失效
    工程车辆转向系统

    公开(公告)号：US20090255750A1

    公开(公告)日：2009-10-15

    申请号：US12303288

    申请日：2007-12-07

    申请人： Kazunori Nakamura ,  Tsuyoshi Nakamura ,  Kouji Ishikawa ,  Hiroyuki Azuma ,  Kentarou Itoga

    发明人： Kazunori Nakamura ,  Tsuyoshi Nakamura ,  Kouji Ishikawa ,  Hiroyuki Azuma ,  Kentarou Itoga

    IPC分类号： B62D5/065 ,  F15B21/08 ,  G06F19/00

    CPC分类号： B62D5/075 ,  E02F9/225

    摘要： A priority valve 7 is disposed between a hydraulic pump 2 and a steering valve 4 and is used to supply priority steering cylinders 103a and 103b with pressurized oil discharged from the hydraulic pump 2 by controlling the differential pressure across a meter-in hydraulic line of the steering valve 4 such that the differential pressure is kept at a target value. A pressure sensor 31 for detecting the load pressures of the steering cylinders 103a and 103b is provided. On the basis of the detected load pressures, the target value set for the priority valve 7 is modified by devices including a controller 32, a solenoid valve 33, a pilot hydraulic line 29, and a pressure receiving unit 24c of the priority valve 7. The above configuration enables suppression of a shock occurring at the start of turning of the steering wheel.

    摘要翻译： 优先阀7设置在液压泵2和转向阀4之间，并且用于通过控制液压泵2的流入液压管路中的压差来向液压泵2排出的加压油供应优先转向缸103a和103b。 转向阀4使差压保持在目标值。 设置有用于检测转向缸103a，103b的负载压力的压力传感器31。 基于检测到的负载压力，通过包括优先阀7的控制器32，电磁阀33，先导液压管路29和压力接收单元24c的装置来改变对优先阀7设定的目标值。 上述结构能够抑制在方向盘转动开始时发生的冲击。

    Hydraulic Drive Device for Working Machine
    3.
    发明申请
    Hydraulic Drive Device for Working Machine 有权
    液压驱动装置

    公开(公告)号：US20140090369A1

    公开(公告)日：2014-04-03

    申请号：US14118141

    申请日：2012-05-17

    申请人： Tsuyoshi Nakamura ,  Kazunori Nakamura ,  Yasuo Okano ,  Kouji Ishikawa ,  Kensuke Sato ,  Hiroyuki Azuma ,  Mitsuhiko Kanehama ,  Yusuke Kajita

    发明人： Tsuyoshi Nakamura ,  Kazunori Nakamura ,  Yasuo Okano ,  Kouji Ishikawa ,  Kensuke Sato ,  Hiroyuki Azuma ,  Mitsuhiko Kanehama ,  Yusuke Kajita

    IPC分类号： F15B15/20

    CPC分类号： F15B15/20 ,  E02F9/123 ,  E02F9/2217 ,  E02F9/2242 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296

    摘要： A hydraulic drive device for a hydraulic excavator, includes: a first hydraulic pump; a first boom directional control valve and a second arm directional control valve which are connected in parallel to the first pump; a second hydraulic pump; and a second boom directional control valve and a first arm directional control valve which are connected in parallel to the second pump; wherein: the hydraulic drive device also includes: a third hydraulic pump; a third boom directional control valve connected to the third pump and controlling the flow of pressure oil supplied to a boom cylinder; and a third arm directional control valve connected in tandem with the third boom directional control valve and controlling the flow of pressure oil supplied to an arm cylinder.

    摘要翻译： 一种用于液压挖掘机的液压驱动装置，包括：第一液压泵; 与第一泵并联连接的第一起重臂方向控制阀和第二臂方向控制阀; 第二液压泵; 以及与第二泵并联连接的第二起重臂方向控制阀和第一臂方向控制阀; 其中：液压驱动装置还包括：第三液压泵; 连接到第三泵的第三起重臂方向控制阀，并控制供应到动臂缸的压力油的流动; 以及与第三动臂方向控制阀串联连接的第三臂方向控制阀，并控制供给到手臂缸的压力油的流动。

    Hydraulic Drive Device for Construction Machine
    5.
    发明申请
    Hydraulic Drive Device for Construction Machine 有权
    施工机械液压驱动装置

    公开(公告)号：US20110192156A1

    公开(公告)日：2011-08-11

    申请号：US13009302

    申请日：2011-01-19

    申请人： Kensuke Sato ,  Hiroyuki Azuma ,  Tsuyoshi Nakamura ,  Yasuo Okano ,  Kouji Ishikawa ,  Mitsuhiko Kanehama

    发明人： Kensuke Sato ,  Hiroyuki Azuma ,  Tsuyoshi Nakamura ,  Yasuo Okano ,  Kouji Ishikawa ,  Mitsuhiko Kanehama

    IPC分类号： F04B49/02

    CPC分类号： E02F9/2246 ,  E02F9/2235

    摘要： A hydraulic drive device for a construction machine which can reliably judge whether or not the state of the construction machine is appropriate for stopping an engine is provided. The hydraulic drive device includes: a main pump 13; a regulator 15 that controls the discharge rate of the main pump 13 by a control pressure Pc; an engine 16 that drives the main pump 13; an engine stopping unit 83 that stops the engine 16 when a predetermined state of the construction machine has continued for a predetermined period of time; and a pressure sensor 72 that detects the control pressure Pc. The engine stopping unit 83 has a control signal judging unit 81 that judges whether or not the control pressure Pc detected by the pressure sensor 72 is lower than a predetermined pressure value Pc1, as a judgment of whether or not the predetermined state of the construction machine is present. The engine stopping unit 83 stops the engine 16 when a judgment result that the control pressure Pc is lower than the predetermined pressure value Pc1 is obtained. The predetermined pressure value Pc1 is a pressure value for controlling the discharge rate of the main pump 13 to the lower limit for use in the construction machine.

    摘要翻译： 提供一种用于建筑机械的液压驱动装置，其可以可靠地判断施工机械的状态是否适合于停止发动机。 液压驱动装置包括：主泵13; 调节器15，其通过控制压力Pc控制主泵13的排出速度; 驱动主泵13的发动机16; 发动机停止单元83，其在建筑机械的预定状态持续预定时间段时停止发动机16; 以及检测控制压力Pc的压力传感器72。 发动机停止单元83具有控制信号判断单元81，判定由压力传感器72检测到的控制压力Pc是否低于预定压力值Pc1，作为对施工机械的预定状态的判断 存在。 当获得控制压力Pc低于预定压力值Pc1的判定结果时，发动机停止单元83停止发动机16。 预定压力值Pc1是用于将主泵13的排出速度控制在建筑机械中使用的下限的压力值。

    ATTACHMENT CONTROL APPARATUS FOR HYDRAULIC EXCAVATOR
    6.
    发明申请
    ATTACHMENT CONTROL APPARATUS FOR HYDRAULIC EXCAVATOR 审中-公开
    液压挖掘机附件控制装置

    公开(公告)号：US20120291427A1

    公开(公告)日：2012-11-22

    申请号：US13497751

    申请日：2010-11-29

    申请人： Hiroyuki Azuma ,  Tsuyoshi Nakamura ,  Yasuo Okano ,  Kouji Ishikawa

    发明人： Hiroyuki Azuma ,  Tsuyoshi Nakamura ,  Yasuo Okano ,  Kouji Ishikawa

    IPC分类号： E02F9/22 ,  F15B20/00

    CPC分类号： E02F9/2228 ,  E02F3/963 ,  E02F3/966 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296

    摘要： In an attachment control apparatus for a hydraulic excavator having a hydraulic circuit that includes a hydraulic pump, a plurality of actuators having a breaker which is an attachment actuator, and a plurality of flow control valves having an attachment flow control valve that is switched by operation pilot pressure from a control pedal device to supply delivery fluid of the hydraulic pump to the attachment actuator, if the control pedal device is operated in a state where an attachment mode is not selected by an attachment selection device, the movement of the attachment actuator is limited. Thus, failure and reduced life of the attachment and other hydraulic devices can be prevented in the event that an operator has forgotten to switch from a normal mode to an attachment mode and has operated the attachment.

    摘要翻译： 在具有包括液压泵的液压回路的液压挖掘机的附接控制装置中，具有作为安装致动器的断路器的多个致动器和具有通过操作切换的附接流量控制阀的多个流量控制阀 如果控制踏板装置在附件选择装置没有选择附接模式的状态下操作，则附接致动器的移动是从控制踏板装置的导向压力，以将液压泵的输送流体供应到附接致动器 有限。 因此，在操作者已经忘记从正常模式切换到附接模式并且操作附件的情况下，可以防止附件和其他液压装置的故障和减少的寿命。

    Hydraulic drive device for construction machine
    8.
    发明授权
    Hydraulic drive device for construction machine 有权
    施工机械液压驱动装置

    公开(公告)号：US08726648B2

    公开(公告)日：2014-05-20

    申请号：US13009302

    申请日：2011-01-19

    申请人： Kensuke Sato ,  Hiroyuki Azuma ,  Tsuyoshi Nakamura ,  Yasuo Okano ,  Kouji Ishikawa ,  Mitsuhiko Kanehama

    发明人： Kensuke Sato ,  Hiroyuki Azuma ,  Tsuyoshi Nakamura ,  Yasuo Okano ,  Kouji Ishikawa ,  Mitsuhiko Kanehama

    IPC分类号： F16D31/02

    CPC分类号： E02F9/2246 ,  E02F9/2235

    摘要： A hydraulic drive device for a construction machine includes an engine stopping unit and a discharge rate control unit. The engine stopping unit stops the engine when a predetermined state of the construction machine has continued for a predetermined period of time. The discharge rate control unit controls a discharge rate control pressure being input to the regulator, when an exhaust emission control device performs regeneration control, or performs warm-up control, and the gate lock lever is in the open position.

    摘要翻译： 用于建筑机械的液压驱动装置包括发动机停止单元和排出速率控制单元。 当建筑机械的预定状态持续预定时间段时，发动机停止单元停止发动机。 当废气排放控制装置执行再生控制或进行预热控制，并且门锁定杆处于打开位置时，排出速率控制单元控制输入到调节器的排出速度控制压力。

    Hydraulic drive device for hydraulic excavator
    10.
    发明授权
    Hydraulic drive device for hydraulic excavator 有权
    液压挖掘机液压驱动装置

    公开(公告)号：US08919115B2

    公开(公告)日：2014-12-30

    申请号：US13023789

    申请日：2011-02-09

    申请人： Naoki Hagiwara ,  Yasuo Okano ,  Tsuyoshi Nakamura ,  Kouji Ishikawa ,  Kazunori Nakamura

    发明人： Naoki Hagiwara ,  Yasuo Okano ,  Tsuyoshi Nakamura ,  Kouji Ishikawa ,  Kazunori Nakamura

    IPC分类号： F15B11/04 ,  E02F9/22

    CPC分类号： E02F9/2239 ,  E02F9/2242 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/20576 ,  F15B2211/30565 ,  F15B2211/40515 ,  F15B2211/415 ,  F15B2211/428 ,  F15B2211/7142 ,  F15B2211/781

    摘要： The operability when performing a combined arm-crowd and bucket operation can be improved. A hydraulic drive device for a hydraulic excavator includes: a bucket directional control valve and a second arm directional control valve, which are connected in parallel tandem with a first hydraulic pump; a first arm directional control valve that is connected to a second hydraulic pump; and a flow rate restriction device that restricts the flow rate of pressure oil supplied to the second arm directional control valve, during crowd operation of a bucket. This flow rate restriction device includes a variable throttle whose opening is controlled so as to become smaller as a bucket operating device is operated to the crowd side, the variable throttle being provided in a bypass path connecting to the supply port of the second arm directional control valve.

    摘要翻译： 可以提高执行组合式斗杆和铲斗操作时的可操作性。 液压挖掘机的液压驱动装置包括：与第一液压泵并联连接的铲斗方向控制阀和第二臂方向控制阀; 与第二液压泵连接的第一臂方向控制阀; 以及流量限制装置，其限制在斗的人群操作期间供应到第二臂方向控制阀的压力油的流量。 该流量限制装置包括可变节流阀，其可随着铲斗操作装置向人群操作而控制开口变小，可变节气门设置在连接到第二臂方向控制器的供给口的旁路 阀。