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688 条记录 (耗时 0.023 秒)

    Swivel control apparatus
    51.
    发明授权
    Swivel control apparatus 有权
    旋转控制装置

    公开(公告)号：US06339929B1

    公开(公告)日：2002-01-22

    申请号：US09625416

    申请日：2000-07-25

    申请人： Tsutomu Udagawa ,  Teruo Igarashi ,  Masami Ochiai ,  Toshimi Sakai ,  Kazuhisa Ishida ,  Kouji Funato

    发明人： Tsutomu Udagawa ,  Teruo Igarashi ,  Masami Ochiai ,  Toshimi Sakai ,  Kazuhisa Ishida ,  Kouji Funato

    IPC分类号： F16D3102

    CPC分类号： E02F9/2285 ,  B66C23/86 ,  E02F9/123 ,  E02F9/128 ,  F15B11/024 ,  F15B21/087 ,  F15B2211/20515 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3058 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/40515 ,  F15B2211/41536 ,  F15B2211/426 ,  F15B2211/50518 ,  F15B2211/55 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/6654 ,  F15B2211/6656 ,  F15B2211/7058 ,  F15B2211/75

    摘要： A swivel control apparatus according to the present invention , includes: a hydraulic pump; a hydraulic motor for swiveling which is driven by hydraulic oil emitted from the hydraulic pump; a control valve which controls a flow of hydraulic oil which is supplied from the hydraulic pump to the hydraulic motor for swiveling, and at a neutral position of the control valve cuts off from one another a pair of ports which communicate to input and output ports of the hydraulic motor; a valve device which communicates and cuts off from one another a pair of conduits which are respectively connected to the input and output ports of the hydraulic motor for swiveling; a pressure detection device which detects respective pressures in the two conduits and outputs pressure signals; a rotational speed detection device which detects a physical quantity based upon a rotational speed of the hydraulic motor for swiveling and outputs a rotational speed signal; a mode selection device which selects a neutral brake mode and a neutral free mode; and a control device which controls driving of the valve device so as to cut off the two conduits from one another when the neutral brake mode is selected, and so as to communicate the two conduits based upon the pressure signals and the rotational speed signal when the neutral free mode is selected.

    摘要翻译： 根据本发明的旋转控制装置包括：液压泵; 用于从液压泵排出的液压油驱动的用于旋转的液压马达; 控制阀，其控制从液压泵供给到用于旋转的液压马达的液压油的流动，并且在控制阀的中间位置彼此切断一对连通到输入和输出端口的端口 液压马达; 一个彼此连通和切断一对导管的阀装置，它们分别连接到液压马达的输入和输出端口用于转动; 压力检测装置，其检测两个管道中的相应压力并输出压力信号; 转速检测装置，其基于用于旋转的液压马达的转速来检测物理量，并输出转速信号; 选择中立制动模式和中立自由模式的模式选择装置; 以及控制装置，其控制所述阀装置的驱动，以在选择所述中立制动模式时将所述两个管道彼此切断，并且当所述压力信号和所述转速信号为 选择中性自由模式。

    Cylinder apparatus
    52.
    发明授权
    Cylinder apparatus 失效
    气缸装置

    公开(公告)号：US06257117B1

    公开(公告)日：2001-07-10

    申请号：US09531327

    申请日：2000-03-20

    申请人： Ryuzo Yagishita

    发明人： Ryuzo Yagishita

    IPC分类号： F01B720

    CPC分类号： F15B15/1409 ,  F15B11/0325 ,  F15B2211/214 ,  F15B2211/50518 ,  F15B2211/5153 ,  F15B2211/524 ,  F15B2211/55 ,  F15B2211/7052

    摘要： The inside of a cylinder is divided into front and rear cylinder chambers, a primary-side piston and a secondary-side piston, each formed by an annular disc part and an annular tube part are fitted into each cylinder chamber, with the annular tube parts of each loosely fitted together, and the secondary-side piston surrounding an operating piston rod so as to hold the operating piston and being fit into the operating piston. The first front cylinder chamber and the second rear cylinder chamber defined by the primary- and secondary-side pistons are connected by a communicating passageway with a relief valve inserted therein, this relief valve being switched to the open condition by either a prescribed pressure or a valve opening/closing bar that is provided upright on the primary-side piston.

    摘要翻译： 气缸的内部被分成前气缸室和后气缸室，每个由环形盘部分和环形管部分形成的初级侧活塞和次级侧活塞装配到每个气缸室中，其中环形管部分 每个松动地装配在一起，并且次级侧活塞围绕操作的活塞杆，以便保持操作活塞并且配合到操作活塞中。 由一次侧活塞和次侧活塞限定的第一前缸室和第二后缸室通过连接通道与插入其中的安全阀连接，该安全阀通过规定的压力或 在初级侧活塞上竖立设置的开闭阀。

    Apparatus and method for controlling displacement of steering pump for work vehicle
    53.
    发明授权
    Apparatus and method for controlling displacement of steering pump for work vehicle 失效
    用于控制工作车辆转向泵排量的装置和方法

    公开(公告)号：US06176083B1

    公开(公告)日：2001-01-23

    申请号：US09173599

    申请日：1998-10-15

    申请人： Masanori Ikari

    发明人： Masanori Ikari

    IPC分类号： F16D3102

    CPC分类号： F15B21/087 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F04B49/08 ,  F04B2205/173 ,  F15B11/162 ,  F15B11/17 ,  F15B2211/20553 ,  F15B2211/20592 ,  F15B2211/3116 ,  F15B2211/329 ,  F15B2211/351 ,  F15B2211/4053 ,  F15B2211/45 ,  F15B2211/455 ,  F15B2211/50518 ,  F15B2211/55 ,  F15B2211/6054 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6355 ,  F15B2211/6654

    摘要： In an apparatus and a method for controlling the displacement of a steering pump for a work vehicle, the pressure loss can be decreased and the discharge of the steering pump can effectively be utilized even in a simultaneous operation with a work machine. The apparatus includes a steering gear preference flow-dividing valve (20) for supplying an oil quantity from the discharge of the steering pump (2) to a steering operation valve, so that the differential pressure between the input pressure and output pressure of the meter-in opening of the steering operation valve (10) is kept constant. The residual oil quantity is supplied to a work-machine operation valve (17, 18). The operation degree detection means (24), for detecting a degree of operation of the work-machine operation valve, and a work-machine oil-quantity control valve (25) are disposed between the steering gear preference flow-dividing valve and the work-machine operation valve for changing the oil quantity supplied from the steering gear preference flow-dividing valve to the work-machine operation valve, in accordance with an operation degree signal from the operation degree detection means.

    摘要翻译： 在用于控制工作车辆的转向泵的位移的装置和方法中，可以减小压力损失，并且即使在与作业机械的同时操作中也能够有效地利用转向泵的排出。 该装置包括用于将来自转向泵（2）的排放的油量供给到转向操作阀的转向齿轮偏心分流阀（20），以使得仪表的输入压力和输出压力之间的压差 - 转向操作阀（10）的打开保持恒定。 剩余油量供给工作机械操作阀（17,18）。 用于检测作业机操作阀的操作程度的操作度检测装置（24）和作业机油量控制阀（25）设置在舵机偏好分流阀和作业 - 根据来自操作度检测装置的操作程度信号，将从转向齿轮偏心分流阀供给的油量改变为工作机械操作阀的机动操作阀。

    Load sensing hydraulic system with high pressure cut-off bypass
    55.
    发明授权
    Load sensing hydraulic system with high pressure cut-off bypass 有权
    负载传感液压系统带有高压截止旁路

    公开(公告)号：US6094911A

    公开(公告)日：2000-08-01

    申请号：US216441

    申请日：1998-12-18

    申请人： Claude T. Crawshaw

    发明人： Claude T. Crawshaw

    IPC分类号： E02F9/22 ,  F04B49/00 ,  F15B11/16 ,  F16D31/00

    CPC分类号： F04B49/002 ,  E02F9/2225 ,  E02F9/2232 ,  E02F9/2296 ,  F15B11/165 ,  F04B2201/1203 ,  F04B2203/0208 ,  F15B2211/20523 ,  F15B2211/20553 ,  F15B2211/251 ,  F15B2211/253 ,  F15B2211/3052 ,  F15B2211/3056 ,  F15B2211/3138 ,  F15B2211/327 ,  F15B2211/40507 ,  F15B2211/50518 ,  F15B2211/50536 ,  F15B2211/528 ,  F15B2211/55 ,  F15B2211/6054 ,  F15B2211/615 ,  F15B2211/71

    摘要： A hydraulic system having a load sensing capability with a high pressure cut-off either operational or bypass is disclosed. The hydraulic system includes a pump having variable displacement under control of a pump control signal, a signal duplicator, at least one pressure relief device operable in cooperation with the signal duplicator, and at least one working element driven by the pump. The system includes a high pressure cut-off selector operable in a first mode to allow the signal duplicator to provide the control signal, and in another mode to allow a true signal to control the pump. The system includes a differential relief valve operable to prevent relief flow therethrough when the signal duplicator pressure exceeds the pump output pressure, and to allow relief flow therethrough when pump pressure exceeds the signal duplicator pressure, such that a load sensing capability is maintained under high pump pressure conditions using either the duplicator signal or the true signal for pump control.

    摘要翻译： 公开了一种具有负载感测能力的液压系统，其具有操作或旁路的高压截止。 液压系统包括在泵控制信号的控制下具有可变位移的泵，信号复制器，与信号复制器协作操作的至少一个减压装置以及由泵驱动的至少一个工作元件。 该系统包括一个高压截止选择器，可在第一模式下操作，以允许信号复制器提供控制信号，另一种方式允许真实信号控制泵。 该系统包括一个差动减压阀，当信号复制器压力超过泵的输出压力时，可以防止溢流流过其中，并且当泵的压力超过信号复制器的压力时允许溢流流过，从而在高泵下保持负载检测能力 使用复印机信号或用于泵控制的真实信号的压力条件。

    Combined tow and pressure relief valve for a hydraulically self-propelled lawn mower
    57.
    发明授权
    Combined tow and pressure relief valve for a hydraulically self-propelled lawn mower 失效

    公开(公告)号：US5901536A

    公开(公告)日：1999-05-11

    申请号：US798656

    申请日：1997-02-11

    申请人： Jeffrey B. Kallevig

    发明人： Jeffrey B. Kallevig

    IPC分类号： F15B11/028 ,  A01D69/00

    CPC分类号： F15B11/028 ,  F15B2211/20553 ,  F15B2211/30505 ,  F15B2211/40507 ,  F15B2211/41554 ,  F15B2211/50536 ,  F15B2211/5154 ,  F15B2211/55 ,  F15B2211/615 ,  F15B2211/7058 ,  Y10S56/11

    摘要： A combination tow and pressure relief valve for use in a hydraulic fluid circuit used in a hydraulically driven wide area lawn mower. The valve includes a cylindrical valve body having a hexagonal head. A slideable valve tip with a shank and a valve head has its shank slidably mounted within the valve body. The valve tip is biased by a spring to move in a direction away from the hex head. In operation, the valve is inserted into a suitable chamber placed in series with a bypass passage. The valve tends to block the bypass passage under steady state conditions. When a surge in hydraulic pressure occurs, as would occur in response to operator input or at startup, the hydraulic fluid overcomes the bias of the spring and urges the valve tip away from the otherwise blocked orifice which links the bypass passage to the chamber. Opening the orifice tends to diminish the magnitude of the pressure peak and helps eliminate jerky starts of the mower. The spring eventually overcomes the reduced hydraulic fluid pressure and returns the head of the valve tip into a sealed relationship with the bypass passage orifice. A shoulder nut permits the valve to be secured at a fixed position within the chamber. Varying the position of the valve within the chamber permits adjustment of the absolute value of the peak pressure which will be reached within the bypass passage. Loosening the valve further permits its use as a tow valve, so that the associated mower can be moved without skidding of the mower tires or actually starting the mower engine. Closing the valve further permits maximum operating pressure availability for larger and heavier equipment.

    Multiple hydraulic distributor device
    58.
    发明授权
    Multiple hydraulic distributor device 失效
    多液压分配器

    公开(公告)号：US5806312A

    公开(公告)日：1998-09-15

    申请号：US796589

    申请日：1997-02-06

    申请人： Wolfgang Kauss ,  Emmanuel Remi Jean-Marie Richer

    发明人： Wolfgang Kauss ,  Emmanuel Remi Jean-Marie Richer

    IPC分类号： F15B11/00 ,  E02F9/22 ,  F15B11/16 ,  F16D31/02

    CPC分类号： E02F9/2232 ,  E02F9/2296 ,  F15B11/162 ,  F15B11/163 ,  F15B2211/20553 ,  F15B2211/25 ,  F15B2211/30505 ,  F15B2211/30555 ,  F15B2211/329 ,  F15B2211/50518 ,  F15B2211/5159 ,  F15B2211/55 ,  F15B2211/6055 ,  F15B2211/71 ,  F15B2211/78 ,  Y10T137/87169

    摘要： A multiple hydraulic distributor device, having an antisaturation function wherein flow of hydraulic fluid is divided independently of load, which includes a hydraulic distributor device having a number of distributor devices assigned to controlling respective loads, which are stacked up face to face against each other as a stack and individually arranged in such a way that the stack has a common line passing through the stack for supplying working fluid under pressure originating from a source including a pump associated with a flow/pressure control device, a common return line for returning working fluid to a tank, and a common transmission line for transmitting control fluid at a pressure of highest load towards the control device for controlling the pump; a shut-off device arranged in the transmission line between a first group of distributors for which the transmission line is connected to the flow/pressure control device for controlling the source, and at least a second group of distributors for which the transmission line is not connected to the flow/pressure control device for controlling the source, wherein the second group of distributor devices are not subjected to a pressure of the first group of distributors and respective corresponding receivers are free to receive output flow from the source, wherein the pressure in these receivers is selected from the group consisting of pressure of the load and pressure corresponding to flow determined by the pressure flow equilibrium.

    摘要翻译： 一种具有抗饱和功能的多重液压分配器装置，其中液压流体的流动独立于负载而分开，该液压分配器装置包括具有分配给多个分配器装置的液压分配器装置，所述分配器装置被分配用于控制相应的负载， 堆叠并且以这样一种方式分开布置，使得该堆叠具有通过堆叠的公共管线，用于在源自包括与流/压力控制装置相关联的泵的源的压力下供应工作流体，用于返回工作流体的公共返回管线 以及用于将控制流体以最高负载压力传送到用于控制泵的控制装置的公共传输线; 一个切断装置，布置在第一组分配器之间的传输线中，传输线连接到用于控制源的流量/压力控制装置，以及传输线不是的至少第二组分配器 连接到用于控制源的流量/压力控制装置，其中第二组分配器装置不经受第一组分配器的压力，并且相应的相应接收器可自由地接收来自源的输出流，其中， 这些接收器选自负载压力和对应于由压力流平衡确定的流量的压力。

    Opposite way pressure detecting type shuttle relief valve
    60.
    发明授权
    Opposite way pressure detecting type shuttle relief valve 失效
    相反方式压力检测型梭式溢流阀

    公开(公告)号：US5765590A

    公开(公告)日：1998-06-16

    申请号：US627874

    申请日：1996-04-03

    申请人： Hyeong-Yee Kim ,  Yoong-Beom Lee

    发明人： Hyeong-Yee Kim ,  Yoong-Beom Lee

    IPC分类号： F16K17/04 ,  F15B11/044 ,  F15B11/048 ,  F15B21/04 ,  F16K17/18 ,  F16K17/196 ,  F16K17/26

    CPC分类号： F15B11/048 ,  F15B11/0445 ,  F15B21/04 ,  F16K17/18 ,  F15B2211/30525 ,  F15B2211/3111 ,  F15B2211/50518 ,  F15B2211/50563 ,  F15B2211/5154 ,  F15B2211/55 ,  F15B2211/575 ,  F15B2211/605 ,  F15B2211/7058 ,  Y10T137/778

    摘要： The present invention provides a shuttle relief valve comprising a housing provided with left and right conduit holes respectively connected to the left and right conduits which are arranged between a pressure source and a hydraulic motor in a hydraulic circuit system, and a space portion communicating the conduit holes with each other. A spool is slidably disposed in the space portion so that the space portion is selectively opened or closed by the movement of the spool. A spring urges the spool into the position in which the space portion is closed, and a left cover is fitted in one hollow portion of the housing formed on one side of the space portion so that it supports the movement of the left portion of the spool. A bushing is fitted in the other hollow portion of the housing formed on the other side of the space portion so that it supports the movement of the right portion of the spool.

    摘要翻译： 本发明提供了一种梭式溢流阀，其包括壳体，其具有分别连接到液压回路系统中的压力源和液压马达之间的左右管道的左右导管孔和连通导管 彼此相通。 阀芯可滑动地设置在空间部分中，使得通过阀芯的移动选择性地打开或关闭空间部分。 弹簧促使线轴进入空间部分关闭的位置，并且左盖被装配在形成在空间部分的一侧上的壳体的一个中空部分中，使得其支撑线轴的左部分的运动 。 衬套安装在形成在空间部分的另一侧的壳体的另一个中空部分中，使得其支撑线轴的右部分的运动。