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    Hydraulic pressure supply unit and electrohydraulic work unit
    3.
    发明申请
    Hydraulic pressure supply unit and electrohydraulic work unit 有权
    液压单元和电动液压单元

    公开(公告)号：US20070095060A1

    公开(公告)日：2007-05-03

    申请号：US11588352

    申请日：2006-10-27

    Applicant: Manfred Kurz ,  Bertold Grimmer

    Inventor： Manfred Kurz ,  Bertold Grimmer

    IPC: F16D31/02

    CPC classification number: F15B11/022 ,  F15B7/001 ,  F15B7/006 ,  F15B11/17 ,  F15B2211/20515 ,  F15B2211/20538 ,  F15B2211/20561 ,  F15B2211/20592 ,  F15B2211/2654 ,  F15B2211/3051 ,  F15B2211/50536 ,  F15B2211/528 ,  F15B2211/55 ,  F15B2211/5756 ,  F15B2211/7053 ,  F15B2211/775

    Abstract: A hydraulic pressure supply unit has two exits (6, 7) that are alternately pressurized, a reversible pumping unit comprising at least two pumps (9, 10) as well as a reversible electric motor (11) that drives all pumps jointly, if necessary with mutually de-locking check valves (8) before the exits. Furthermore envisioned is a supply for hydraulic medium. One pump is configured as a low-pressure pump (10) and one pump is configured as a high-pressure pump (9), and whereby the pressurized exits of both pumps are placed against the same exit (6, 7) of the pressure supply unit. In order to provide, with a simple setup and the highest possible level of flexibility in terms of the configuration of the system, a large quantity of hydraulic medium for both working directions until a pressure level that can be preset is reached and, following the reaching of this pressure level, to provide said hydraulic medium at high pressure, it is envisioned that both exits of high-pressure pump (9) are separated from low-pressure pump (10) via check valves (10, 13), and each pump (9, 10) is connected to the supply for hydraulic medium via its own shuttle valve (14, 15); it is also envisioned that both exits of low-pressure pump (10) can be connected to tank (12) via pressure on-off valves (16, 17), and whereby the control connections of pressure on-off valves (16, 17) are connected to the exits of high-pressure pump (9) in such a way that the control connection of that pressure on-off valve (16, 17) on the currently pressurized side is applied with pressure by the currently pressurized exit of high-pressure pump (9).

    Abstract translation: 液压供应单元具有交替加压的两个出口（6,7），包括至少两个泵（9,10）的可逆泵送单元以及如果需要联合驱动所有泵的可逆电动机（11） 在出口之前具有相互锁定的止回阀（8）。 此外设想的是液压介质的供应。 一个泵被配置为低压泵（10），一个泵被配置为高压泵（9），并且由此两个泵的加压出口被放置在与压力相同的出口（6,7）上 供应单位。 为了在系统的配置方面提供简单的设置和最高可能的灵活性水平，可以达到用于两个工作方向的大量液压介质，直到达到可以预设的压力水平，并且在达到 为了在高压下提供所述液压介质，可以设想高压泵（9）的两个出口都经由止回阀（10,13）与低压泵（10）分开，并且每个泵 （9,10）经由其自身的梭阀（14,15）连接到液压介质的供给装置; 还可以设想，低压泵（10）的两个出口都可以经由压力开关阀（16,17）连接到罐（12），由此压力开关阀（16,17）的控制连接 ）连接到高压泵（9）的出口，使得当前加压侧的压力开关阀（16,17）的控制连接被当前加压的高压出口施加压力 压力泵（9）。

    Fluid flow control valve assembly with independent feedback pressure
    4.
    发明申请
    Fluid flow control valve assembly with independent feedback pressure 失效
    流量控制阀组件具有独立的反馈压力

    公开(公告)号：US20040231506A1

    公开(公告)日：2004-11-25

    申请号：US10442519

    申请日：2003-05-21

    Inventor： Roger R. Pili ,  Duane D. Dwyer

    IPC: F15B011/08

    CPC classification number: F15B11/003 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/327 ,  F15B2211/40507 ,  F15B2211/41554 ,  F15B2211/428 ,  F15B2211/46 ,  F15B2211/50518 ,  F15B2211/5159 ,  F15B2211/528 ,  F15B2211/56 ,  F15B2211/5756 ,  F15B2211/7052

    Abstract: A fluid flow control valve assembly that can be actuated using an electrically operated or pneumatically operated flow control valve includes a valve body having a fluid supply passageway, a fluid exhaust passageway, and a fluid bypass passageway. A pilot operated relief valve is disposed in the fluid bypass passageway, wherein the pilot operated relief valve blocks the fluid bypass passageway to create a pressure upstream of the pilot operated relief valve to actuate a different pilot operated device having a pilot line in fluid communication with the fluid bypass passageway upstream of the pilot operated relief valve. Fluid flowing through a venturi nozzle in the fluid bypass passageway that intersects the fluid exhaust passageway lowers the pressure in the fluid exhaust passageway.

    Abstract translation: 可以使用电动或气动操作的流量控制阀致动的流体流量控制阀组件包括具有流体供应通道，流体排出通道和流体旁路通道的阀体。 先导操作的安全阀设置在流体旁路通道中，其中先导操作的安全阀阻止流体旁路通道以在先导操作的安全阀的上游产生压力，以致动不同的先导操作的装置，其具有与 先导式溢流阀上游的流体旁路通道。 流过与流体排放通道相交的流体旁路通道中的文氏管喷嘴的流体降低了流体排放通道中的压力。

    Control device for hydraulically operated hoisting mechanisms
    5.
    发明授权
    Control device for hydraulically operated hoisting mechanisms 失效
    液压操作提升机构的控制装置

    公开(公告)号：US06786132B2

    公开(公告)日：2004-09-07

    申请号：US10349174

    申请日：2003-01-23

    Applicant: Hermann Albert ,  Peter Bruck ,  Alois Hoffmann

    Inventor： Hermann Albert ,  Peter Bruck ,  Alois Hoffmann

    IPC: F15B1108

    CPC classification number: F15B20/002 ,  B66F9/22 ,  F15B11/003 ,  F15B11/05 ,  F15B20/008 ,  F15B2211/40515 ,  F15B2211/40576 ,  F15B2211/413 ,  F15B2211/41581 ,  F15B2211/46 ,  F15B2211/5756 ,  F15B2211/6355 ,  F15B2211/7052 ,  F15B2211/72

    Abstract: A control device for hydraulically operated hoisting mechanisms used to raise and lower loads includes an electrically controllable throttle valve connected to a return line of the hoisting mechanism, and a pressure scale with at least one blocking position and one control position. The pressure scale operates in conjunction with an unblocking mechanism. When in its normal position, the pressure scale blocks the return line. The pressure scale assumes its control position in lowering of a load as a result of triggering of the unblocking mechanism. In the event of failure of the throttle valve, the pressure scale may be moved to its blocking position by the unblocking mechanism. In the event of failure of the pressure scale, the throttle valve assumes its blocking position. The load retention function is performed by two series-connected closed hydraulic actuators which can be electrically controlled individually. Both a hydraulic redundancy and an electric redundancy of the load retention function are provided as a result, so that higher safety requirements are satisfied.

    Abstract translation: 用于提升和降低载荷的用于液压操作的提升机构的控制装置包括连接到提升机构的返回管路的电控制的节流阀以及具有至少一个阻塞位置和一个控制位置的压力秤。 压力表与解锁机构一起工作。 当处于正常位置时，压力标尺阻挡返回线。 由于触发了解锁机构，压力秤承受了负载降低的控制位置。 在节气门故障的情况下，通过解锁机构可将压力秤移动到其阻挡位置。 在压力表失效的情况下，节流阀处于阻塞位置。 负载保持功能由两个串联的闭合液压执行器执行，可以单独电气控制。 因此，提供了负载保持功能的液压冗余和电冗余，从而满足更高的安全性要求。

    Valve
    6.
    发明授权
    Valve 失效
    阀

    公开(公告)号：US5213304A

    公开(公告)日：1993-05-25

    申请号：US939152

    申请日：1992-09-02

    Applicant: Toshihiro Fujikawa

    Inventor： Toshihiro Fujikawa

    IPC: F16K17/30 ,  F15B11/02 ,  F16K31/12 ,  F16K47/00

    CPC classification number: F15B11/02 ,  F16K47/00 ,  F15B2211/40515 ,  F15B2211/428 ,  F15B2211/50572 ,  F15B2211/5753 ,  F15B2211/5756 ,  F15B2211/6051

    Abstract: A buffered valve having a longitudinal passage leading to a valve chamber. The valve chamber is divided by a spacer into a front and rear chamber which are connected by a port in the spacer. A normally closed main valve member is in the front chamber which blocks the longitudinal passage. A sub-valve which has a vessel or cup-like configuration is in the rear valve chamber and is biased toward the port in the spacer by a coil spring. The sub-valve has a through hole which is blocked by a check valve. Adjustable passages are provided for connecting between the front and rear chambers of the valve. When the main valve opens, the flow of fluid from behind the main valve member to the rear chamber is restricted by the port in the spacer and the sub-valve assembly to provide a buffered valve action. When the main valve is closing, the flow of fluid is again restricted by the passage in the sub-valve and the port in the spacer to provide a buffered action. The main valve member has an attached buffer member which substantially interferes with the flow of fluid through the longitudinal passage increasing the buffering action.

    Abstract translation: 缓冲阀，其具有通向阀室的纵向通道。 阀室由间隔件分隔成通过间隔件中的端口连接的前室和后室。 常闭主阀构件位于前室中，阻挡纵向通道。 具有容器或杯状构造的副阀在后阀室中并且通过螺旋弹簧偏压到间隔件中的端口。 子阀具有通过止回阀阻塞的通孔。 可调节通道用于连接阀门的前后室。 当主阀打开时，从主阀构件后部到后室的流体流由间隔件和副阀组件中的端口限制，以提供缓冲阀动作。 当主阀关闭时，流体的流动再次受到子阀中的通道和间隔件中的端口的限制，以提供缓冲作用。 主阀构件具有附加的缓冲构件，其基本上干扰通过纵向通道的流体流增加缓冲作用。

    Valve device
    7.
    发明授权
    Valve device 有权

    公开(公告)号：US09869074B2

    公开(公告)日：2018-01-16

    申请号：US13378396

    申请日：2010-06-23

    Applicant: Bo Andersson ,  Bertil Lundgren

    Inventor： Bo Andersson ,  Bertil Lundgren

    IPC: F15B11/05 ,  E02F9/22 ,  F15B13/04

    CPC classification number: E02F9/2267 ,  E02F9/2232 ,  F15B11/05 ,  F15B11/055 ,  F15B13/0417 ,  F15B2211/20553 ,  F15B2211/30505 ,  F15B2211/30535 ,  F15B2211/5756 ,  F15B2211/6051 ,  F15B2211/6052 ,  F15B2211/654

    Abstract: The invention relates to a hydraulic valve device (1) including a high pressure connection (P′) and a low pressure connection (T′); at least one motor port connection (A′) that is connectable to a motor port (A) on a hydraulic motor (M), preferably a hydraulic cylinder; a flow control valve (F), which is arranged between the high pressure connection (P′) and the motor port connection (A′) and which includes a flow opening (18) that is adjustable between a fully closed position and a fully open position; and a pressure regulator (R) that is arranged between the high pressure connection (P′) and the flow regulating valve (F), wherein a regulator pressure (PR) that acts at a first connection point (3) between the pressure regulator (R) and the flow regulating valve (F) acts on the pressure regulator (R) via a first control conduit (4) to close the same. A second control conduit (5) including a first restrictor (6), is arranged to convey a load pressure (PL) that acts at the motor port connection (A′) from a second connection point (7) positioned between the flow regulating valve (F) and the motor port connection (A′) via the first restrictor (6) to a third connection point (8) at which a first control pressure (Pc) acts and which third connection point (8) is connected to the pressure regulator (R) to act on the same in the opening direction by means of said first control pressure (Pc), wherein the third connection point (8) is connected to the low pressure connection (T), via an adjustable second restrictor (9).

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