Hydraulic Drive Device
    1.
    发明申请
    Hydraulic Drive Device 审中-公开
    液压驱动装置

    公开(公告)号:US20090090103A1

    公开(公告)日:2009-04-09

    申请号:US11915041

    申请日:2006-05-25

    IPC分类号: F15B15/00

    摘要: A hydraulic drive system is provided with a front casing 50 and a rear ceasing 51. The front casing 50 is formed of a single member, and accommodates therein rotary members, which include a cylinder block 30A and the like, and a part of an output shaft 36 of a hydraulic motor 30 and rotary members, which include a cylinder block 31A and the like, and a part of an output shaft 32 of a hydraulic motor 31. The rear casing 51 is joined to the front casing 50, and has a ports plate 30C and a ports plate 31C arranged therein. The rear casing 51 has an oilway 52 communicating to a first port 30C1 of the ports plate 30C, an oilway 53 communicating to the oilway 52 and also communicating to a first port 31C1 of the ports plate 31C, an oilway 54 communicating to a second port 30C2 of the ports plate 30C, and an oilway 55 communicating to the oilway 54 and also communicating to a second port 31C2 of the ports plate 31C.

    摘要翻译: 液压驱动系统设置有前壳体50和后挡块51.前壳体50由单个构件形成,并且容纳在其中的包括气缸体30A等的旋转构件和一部分输出 液压马达30的轴36和包括气缸体31A等的旋转构件和液压马达31的输出轴32的一部分。后壳体51接合到前壳体50,并且具有 端口板30C和布置在其中的端口板31C。 后壳体51具有与端口板30C的第一端口30C1连通的油路52,与油路52连通并且还与端口板31C的第一端口31C1连通的油路53,与第一端口连通的油路54 30C2,以及与油路54连通的油路55,并与端口板31C的第二端口31C2连通。

    Hydraulic drive device
    2.
    发明授权
    Hydraulic drive device 有权
    液压驱动装置

    公开(公告)号:US07434394B2

    公开(公告)日:2008-10-14

    申请号:US10553414

    申请日:2004-04-16

    IPC分类号: F16D31/02 F15B13/06

    摘要: To permit using hold-side pressure oil in a first hydraulic cylinder for the acceleration of a second hydraulic cylinder upon performing a combined operation of the first and second hydraulic cylinders, a hydraulic drive system is provided with a main hydraulic pump 21, a boom cylinder 6 and an arm cylinder 7, a directional control valve 23 for a boom and a directional control valve 24 for an arm, and a boom control device 25 and an arm control device 26. The hydraulic drive system is also provided with a pressure oil feed means for feeding pressure oil in a rod chamber 6b of the boom cylinder 6 to an upstream side of the directional control valve 24 for the arm when a bottom pressure of the arm cylinder 7 has increased to a high pressure equal to or higher than a predetermined pressure. This pressure oil feed means includes a flow combiner valve 44 arranged in a reservoir line 42 which can communicate to the rod chamber 6b of the boom cylinder 6. When the bottom pressure of the arm cylinder 7 is the predetermined pressure or higher, the flow combiner valve 44 maintains a communication line 40, which communicates the reservoir line 42 and the upstream side of the directional control valve 24 for the arm with each other, in a state that pressure oil can be fed to the upstream side of the directional control valve 24 for the arm.

    摘要翻译: 为了在执行第一和第二液压缸的组合操作时允许在第一液压缸中使用保持侧压力油来加速第二液压缸,液压驱动系统设置有主液压泵21,动臂缸 悬臂气缸7,用于悬臂的方向控制阀23和用于臂的方向控制阀24,以及起重臂控制装置25和臂控制装置26。 液压驱动系统还设置有压力油进给装置,用于当臂缸7的底部压力向臂的方向控制阀24的上游侧供给动臂缸6的杆室6b中的压力油时 已经增加到等于或高于预定压力的高压。 该压力供油装置包括设置在储存管路42中的流动组合器阀44,该储存管路42可与动臂缸6的杆室6b连通。 当气缸7的底部压力为预定压力或更高压力时,组合阀44保持连通管路40,该连通管路40将储存管路42和臂的方向控制阀24的上游侧彼此连通, 在压力油可以供给到用于臂的方向控制阀24的上游侧的状态下。

    Hydraulic drive device
    4.
    发明申请
    Hydraulic drive device 有权
    液压驱动装置

    公开(公告)号:US20070028607A1

    公开(公告)日:2007-02-08

    申请号:US10553414

    申请日:2004-04-16

    IPC分类号: F03C1/00

    摘要: To permit using hold-side pressure oil in a first hydraulic cylinder for the acceleration of a second hydraulic cylinder upon performing a combined operation of the first and second hydraulic cylinders, a hydraulic drive system is provided with a main hydraulic pump 21, a boom cylinder 6 and an arm cylinder 7, a directional control valve 23 for a boom and a directional control valve 24 for an arm, and a boom control device 25 and an arm control device 26. The hydraulic drive system is also provided with a pressure oil feed means for feeding pressure oil in a rod chamber 6b of the boom cylinder 6 to an upstream side of the directional control valve 24 for the arm when a bottom pressure of the arm cylinder 7 has increased to a high pressure equal to or higher than a predetermined pressure. This pressure oil feed means includes a flow combiner valve 44 arranged in a reservoir line 42 which can communicate to the rod chamber 6b of the boom cylinder 6. When the bottom pressure of the arm cylinder 7 is the predetermined pressure or higher, the flow combiner valve 44 maintains a communication line 40, which communicates the reservoir line 42 and the upstream side of the directional control valve 24 for the arm with each other, in a state that pressure oil can be fed to the upstream side of the directional control valve 24 for the arm.

    摘要翻译: 为了在执行第一和第二液压缸的组合操作时允许在第一液压缸中使用保持侧压力油来加速第二液压缸,液压驱动系统设置有主液压泵21,动臂缸 悬臂气缸7,用于悬臂的方向控制阀23和用于臂的方向控制阀24,以及悬臂控制装置25和臂控制装置26.液压驱动系统还设有压力油进给 用于当臂缸7的底部压力增加到等于或高于其的高压时将臂架缸6的杆室6b中的压力油供给到用于臂的方向控制阀24的上游侧的装置 预定压力。 该压力供油装置包括配置在储存管路42中的流动组合器阀44,其可与臂缸6的杆室6b连通。当臂缸7的底部压力为预定压力或更高时, 组合阀44保持连通管线40,该连通管线40在压力油可以被供给到方向控制阀的上游侧的状态下将储存管路42和用于臂的方向控制阀24的上游侧彼此连通 24为手臂。

    System for changing function of work machine and base station
    7.
    发明授权
    System for changing function of work machine and base station 有权
    改变作业机和基站功能的系统

    公开(公告)号:US06898502B2

    公开(公告)日:2005-05-24

    申请号:US10240398

    申请日:2001-03-30

    摘要: A function changing system of construction machinery includes a hydraulic excavator and a base station. The hydraulic excavator is deployed at a construction site and is provided with a rewritable memory storing control programs and/or data required for control of the machinery, a CPU for reading out the control programs from the memory and executing them, and a communications device The base station is provided with a communications device, a center server for identifying the serial number of the hydraulic excavator and transferring information with the control unit, and a database managed by the center server and storing control programs corresponding to the hydraulic excavator. When changing or switching an attachment of the hydraulic excavator, information is transferred with the center server of the base station and the control programs or data stored in the storage unit are rewritten to enable work suited to the changed part.

    摘要翻译: 工程机械功能改变系统包括液压挖掘机和基站。 液压挖掘机部署在施工现场,并且设置有可重写存储器,其存储用于控制机器所需的控制程序和/或数据; CPU,用于从存储器读出控制程序并执行它们;以及通信设备 基站设置有通信设备,用于识别液压挖掘机的序列号并与控制单元传送信息的中央服务器,以及由中央服务器管理的数据库,并存储与液压挖掘机相对应的控制程序。 当更换或切换液压挖掘机的附件时,信息与基站的中央服务器一起传送,并且存储在存储单元中的控制程序或数据被重写以使得适合于改变的部分的工作。

    Pipe breakage control valve device
    9.
    发明授权
    Pipe breakage control valve device 失效
    管道破损控制阀装置

    公开(公告)号:US06409142B1

    公开(公告)日:2002-06-25

    申请号:US09857446

    申请日:2001-06-04

    IPC分类号: F16K3112

    摘要: An input/output port 1 of a hose rupture control valve unit 100 is attached to a bottom port of a hydraulic cylinder 102, and an input/output port 2 is connected to one of actuator ports of a control valve 103 via an actuator line 105. The valve unit comprises a poppet valve body 5 serving as a main valve, a first spool valve body 6 serving as a pilot valve operated with a pilot pressure supplied as an external signal and having a pilot variable throttle portion 6a to operate the poppet valve body 5, a second spool valve body 50 operated with a pilot pressure and having a sub-variable throttle portion 50a to control a sub-flow rate, and a small relief valve 7 having the function of an overload relief valve.

    摘要翻译: 软管破裂控制阀单元100的输入/输出端口1附接到液压缸102的底部端口,并且输入/输出端口2经由致动器线105连接到控制阀103的致动器端口中的一个 阀单元包括作为主阀的提升阀体5,作为先导阀的第一滑阀体6,作为外部信号供给的先导压力,并具有先导可变节流部6a,以使提升阀 主体5,以先导压力操作并具有用于控制副流量的副可变节流部50a的第二滑阀体50和具有过载溢流阀功能的小型安全阀7。

    Hydraulic drive system for hydraulic work vehicle
    10.
    发明授权
    Hydraulic drive system for hydraulic work vehicle 有权
    液压工作车液压驱动系统

    公开(公告)号:US06220028B1

    公开(公告)日:2001-04-24

    申请号:US09204068

    申请日:1998-12-03

    IPC分类号: F16D3102

    摘要: A hydraulic drive system is provided with a signal guide system for guiding a delivery pressure of a pump as a command pressure via a line and a port, another signal guide system for guiding a pilot pressure of a pilot pump as another command pressure via a line and a port, a tilting control unit for controlling the displacement of the pump by the command pressures guided to the ports, a controller having a command current-setting unit for setting a relationship between a target engine speed and a command current, a target engine speed-indicating unit for an engine, and a solenoid-operated proportional valve for allowing the pilot pressure of the line to pass as is while no drive signal is outputted from the controller but for being reduced in opening to change the pilot pressure to a smaller value when a drive signal is outputted from the controller.

    摘要翻译: 液压驱动系统设置有信号引导系统,用于经由管线和端口引导泵的输送压力作为指令压力,另一个信号引导系统用于通过管线引导先导泵的先导压力作为另一个指令压力 以及端口,倾斜控制单元,用于通过被引导到端口的指令压力来控制泵的排量;控制器,具有用于设定目标发动机转速和指令电流之间的关系的指令电流设定单元,目标发动机 用于发动机的速度指示单元和用于允许线路的先导压力在没有驱动信号从控制器输出但为了减小开启以将先导压力改变为更小的电磁比例阀 当从控制器输出驱动信号时的值。