Hydraulic pressure supply apparatus

    公开(公告)号:US09671013B2

    公开(公告)日:2017-06-06

    申请号:US14769194

    申请日:2014-02-03

    发明人: Atsushi Fujikawa

    摘要: It is configured to have a first hydraulic pump connected to a drive source, a second hydraulic pump connected to a rotor of the first hydraulic pump, a first regulator valve that regulates pressure of the hydraulic oil discharged from the first hydraulic pump to a third oil passage that connects a discharge port of the first hydraulic pump and a hydraulic actuator, a fourth oil passage that connects the second hydraulic pump and a lubrication system of the hydraulic actuator, a second regulator valve that regulates pressure of the hydraulic oil discharged from the first regulator valve to a pressure lower than a line pressure, and an one-way valve that is installed in a second oil passage connecting the second hydraulic pump and a reservoir and permits supply of hydraulic oil from the reservoir only to the second hydraulic pump.

    Slewing type working machine
    76.
    发明授权
    Slewing type working machine 有权
    回转式工作机

    公开(公告)号:US09506220B2

    公开(公告)日:2016-11-29

    申请号:US14339031

    申请日:2014-07-23

    发明人: Yusuke Kamimura

    摘要: Provided is a slewing-type working machine capable of reducing back pressure generated during slewing. The slewing-type working machine includes: a base carrier; an upper slewing body; a hydraulic motor 11 including first and second ports 11a and 11b and slewing the upper slewing body; a hydraulic pump 10, a slewing operation device 12 including an operating member 12a; a control valve 13 controlling the hydraulic motor 11 based on the operation signal of the slewing operation device 12; first and second pipe-lines 14, 15 connecting the first and second ports 11a and 11b of the hydraulic motor 11 to the control valve; a communication switching device 25 and 26 capable of switching communication and cutting of between both pipe-lines 14, 15 and the tank T; and a switching command section 27 operating the communication switching devices 25 and 26, when the upper slewing body is slewed, to bring only a pipe-line, which corresponds to a discharge-side pipe-line of the hydraulic motor 11, of the pipe-lines 14 and 15 into communication with the tank T, while bypassing the control valve 13.

    摘要翻译: 提供了能够减少回转时产生的背压的回转式作业机。 回转式工作机包括:基座; 上部回转体; 包括第一和第二端口11a和11b并回转上部回转体的液压马达11; 液压泵10,包括操作构件12a的回转操作装置12; 基于回转运转装置12的运转信号控制液压马达11的控制阀13; 将液压马达11的第一和第二端口11a和11b连接到控制阀的第一和第二管道14,15; 能够切换管路14,15与箱体T的通信切断的通信切换装置25,26。 以及操作通信切换装置25,26的切换命令部27,当上部回转体旋转时,仅使与液压马达11的排出侧管线对应的管路成为管 - 线14和15与储罐T连通,同时绕过控制阀13。

    SYSTEMS AND METHODS FOR SELECTIVELY ENGAGED REGENERATION OF A HYDRAULIC SYSTEM
    77.
    发明申请
    SYSTEMS AND METHODS FOR SELECTIVELY ENGAGED REGENERATION OF A HYDRAULIC SYSTEM 审中-公开
    液压系统选择性再生的系统和方法

    公开(公告)号:US20160160884A1

    公开(公告)日:2016-06-09

    申请号:US14961393

    申请日:2015-12-07

    摘要: A hydraulic system and method for using the same are provided. The hydraulic system includes a pump, a first actuator having a first head chamber and a first rod chamber, and a second actuator having a second head chamber and a second rod chamber. The hydraulic system further includes a first control valve and a second control valve. The second control valve to selectively provide regeneration fluid flow from the first rod chamber to the first head chamber in response to a first function command is less than a first function command limit, a second function command is greater than a second function command limit, and a second function load is greater than a second function load limit.

    摘要翻译: 提供了一种液压系统及其使用方法。 液压系统包括泵,具有第一头室和第一杆室的第一致动器,以及具有第二头腔和第二杆室的第二致动器。 液压系统还包括第一控制阀和第二控制阀。 响应于第一功能命令选择性地提供从第一杆室到第一头室的再生流体流的第二控制阀小于第一功能命令限制,第二功能命令大于第二功能命令极限,以及 第二功能负载大于第二功能负载限制。

    A HYDRAULIC VALVE ARRANGEMENT
    78.
    发明申请
    A HYDRAULIC VALVE ARRANGEMENT 有权
    液压阀安排

    公开(公告)号:US20160061225A1

    公开(公告)日:2016-03-03

    申请号:US14785887

    申请日:2014-03-31

    摘要: A hydraulic valve arrangement (1) is provided comprising comprising a supply port arrangement having a high pressure port (2) and a low pressure port (4), a working port arrangement having two working ports (6, 7), a first valve (13) arranged between said high pressure port (2) and said working port arrangement (6, 7), a second valve (14) arranged between said low pressure port (4) and said working port arrangement (6, 7), a controller (19) for controlling said first valve (13) and said second valve (14), said controller (19) having an input connection (20) for receiving a signal of an operator input device, and a regenerative flow path which can be established by means of at least one of said first valve (13) and said second valve (14). The function of such a hydraulic valve arrangement should be enhanced. To this end said controller (19) said controller interrupts said regenerative flow path when a feed pressure at said working port arrangement (6, 7) exceeds a predetermined pressure level.

    摘要翻译: 提供一种液压阀装置(1),其包括具有高压端口(2)和低压端口(4)的供应端口装置,具有两个工作端口(6,7)的工作端口装置,第一阀门 布置在所述高压端口(2)和所述工作端口装置(6,7)之间的第二阀(14),布置在所述低压端口(4)和所述工作端口装置(6,7)之间的第二阀(14) (19),用于控制所述第一阀(13)和所述第二阀(14),所述控制器(19)具有用于接收操作者输入装置的信号的输入连接(20)和可建立的再生流路 借助于所述第一阀(13)和所述第二阀(14)中的至少一个。 应提高这种液压阀装置的功能。 为此,当所述工作端口装置(6,7)上的进给压力超过预定压力水平时,所述控制器(19)所述控制器中断所述再生流动路径。

    Independent supply and exhaust metering within a valve casting
    79.
    发明授权
    Independent supply and exhaust metering within a valve casting 有权
    独立的供应和排气计量阀门铸件

    公开(公告)号:US09222241B2

    公开(公告)日:2015-12-29

    申请号:US13167318

    申请日:2011-06-23

    申请人: Joshua D. Graeve

    发明人: Joshua D. Graeve

    摘要: The present disclosure provides a hydraulic system for controlling a load. The system includes a housing defining an inlet, a first port, and a second port. The system further includes a spool valve and a proportional control element. The spool valve is in fluid communication with the inlet and the second port and the proportional control element is in fluid communication with the first port. The proportional control element can be controllable to exhaust fluid from the first port to a reservoir. In this arrangement, the proportional control element and the spool valve are controlled independently of one another.

    摘要翻译: 本公开提供了一种用于控制负载的液压系统。 该系统包括限定入口,第一端口和第二端口的壳体。 该系统还包括滑阀和比例控制元件。 滑阀与入口和第二端口流体连通,比例控制元件与第一端口流体连通。 比例控制元件可以被控制以将流体从第一端口排出到储存器。 在这种布置中,比例控制元件和滑阀彼此独立地被控制。