Brake Charge Valve with Set Minimum Fixed Hydro-Mechanical Pressure By-Pass Function
    1.
    发明申请
    Brake Charge Valve with Set Minimum Fixed Hydro-Mechanical Pressure By-Pass Function 有权
    具有设定最小固定水力机械压力旁路功能的制动充气阀

    公开(公告)号:US20160090715A1

    公开(公告)日:2016-03-31

    申请号:US14498310

    申请日:2014-09-26

    申请人: Caterpillar Inc.

    IPC分类号: E02F9/22 G05D7/01

    摘要: A hydraulic circuit includes: a priority valve including a first position and a second position where: the first position includes a first fluid passage and a fixed bypass orifice connected to the first fluid passage; the second position includes a second fluid passage and a variable bypass orifice connected to the second fluid passage. The hydraulic circuit further includes: a first fluid line fluidly connecting the priority valve and a first machine component; a second fluid line fluidly connecting the priority valve and a second machine component; a check valve placed between the priority valve and the second machine component and fluidly connecting the priority valve and the second machine component; an oil passage on the priority valve fluidly connected to one or more machine components other than the first and second machine components; one or more actuators connected to the priority valve; and a control valve communicatively connected to the one or more actuators connected to the priority valve.

    摘要翻译: 液压回路包括:优先阀,包括第一位置和第二位置,其中:第一位置包括连接到第一流体通道的第一流体通道和固定旁通孔口; 第二位置包括连接到第二流体通道的第二流体通道和可变旁路孔口。 液压回路还包括:流体连接优先阀和第一机器部件的第一流体管路; 流体连接优先阀和第二机器部件的第二流体管线; 放置在优先阀和第二机械部件之间的止回阀,并且流体地连接优先阀和第二机械部件; 优先阀上的油通道,其流体地连接到除了第一和第二机器部件之外的一个或多个机器部件; 连接到优先阀的一个或多个致动器; 以及控制阀,其通信地连接到连接到优先阀的一个或多个致动器。

    Hydraulic system having low speed operation
    2.
    发明授权
    Hydraulic system having low speed operation 有权
    液压系统低速运行

    公开(公告)号:US09366272B2

    公开(公告)日:2016-06-14

    申请号:US13963150

    申请日:2013-08-09

    申请人: Caterpillar Inc.

    摘要: A hydraulic fan circuit is provided. The hydraulic fan circuit includes a tank, a motor having a fluid inlet and a fluid outlet and a pump to draw fluid at a low pressure from the tank and discharge the fluid at elevated pressures to the motor via the fluid inlet. The hydraulic fan circuit further includes a directional control valve disposed between the fluid outlet of the motor and the tank. The directional control valve is operable to move between a flow blocking position and a flow passing position. Further, the directional control valve is configured to reduce a positive speed of the motor below a lowest positive speed attainable through control of pump output. Furthermore, the hydraulic fan circuit includes a pressure control circuit configured to provide a pilot fluid flow at varying pressure to move the directional control valve.

    摘要翻译: 提供液压风扇电路。 液压风扇回路包括油箱,具有流体入口和流体出口的马达和用于从罐中抽取低压的流体并经由流体入口将流体以升高的压力排出到马达的泵。 液压风扇回路还包括设置在电动机的流体出口和罐之间的方向控制阀。 方向控制阀可操作以在阻流位置和流动通过位置之间移动。 此外,方向控制阀被配置为将电动机的正转速降低到通过控制泵输出可获得的最低正向速度。 此外,液压风扇回路包括压力控制回路,该压力控制回路构造成在变化的压力下提供先导流体流动以移动方向控制阀。

    FLOW RECTIFIER ASSEMBLY
    3.
    发明申请
    FLOW RECTIFIER ASSEMBLY 审中-公开
    流量整流器总成

    公开(公告)号:US20140175773A1

    公开(公告)日:2014-06-26

    申请号:US13722093

    申请日:2012-12-20

    申请人: CATERPILLAR INC.

    IPC分类号: F16L41/02 B60D1/24 F16F9/19

    摘要: A flow rectifier assembly including a manifold with a variable orifice disposed therein. Further, the flow rectifier assembly includes one or more valves disposed in the manifold and fluidly connected to the variable orifice to provide a uni-directional flow over the variable orifice. Each of the one or more valves includes a poppet. A fly-cut recess defined in the manifold includes a seat for resting the poppet.

    摘要翻译: 一种流量整流器组件,其包括设置在其中的具有可变孔口的歧管。 此外,流动整流器组件包括设置在歧管中并流体连接到可变孔口的一个或多个阀,以在可变孔口上提供单向流动。 所述一个或多个阀中的每一个包括提升阀。 在歧管中限定的飞切凹槽包括用于搁置提升阀的座。

    HYDRAULIC SYSTEM HAVING LOW SPEED OPERATION
    5.
    发明申请
    HYDRAULIC SYSTEM HAVING LOW SPEED OPERATION 有权
    具有低速运行的液压系统

    公开(公告)号:US20150040548A1

    公开(公告)日:2015-02-12

    申请号:US13963150

    申请日:2013-08-09

    申请人: Caterpillar Inc.

    IPC分类号: F15B15/02

    摘要: A hydraulic fan circuit is provided. The hydraulic fan circuit includes a tank, a motor having a fluid inlet and a fluid outlet and a pump to draw fluid at a low pressure from the tank and discharge the fluid at elevated pressures to the motor via the fluid inlet. The hydraulic fan circuit further includes a directional control valve disposed between the fluid outlet of the motor and the tank. The directional control valve is operable to move between a flow blocking position and a flow passing position. Further, the directional control valve is configured to reduce a positive speed of the motor below a lowest positive speed attainable through control of pump output. Furthermore, the hydraulic fan circuit includes a pressure control circuit configured to provide a pilot fluid flow at varying pressure to move the directional control valve.

    摘要翻译: 提供液压风扇电路。 液压风扇回路包括油箱,具有流体入口和流体出口的马达和用于从罐中抽取低压的流体并经由流体入口将流体以升高的压力排出到马达的泵。 液压风扇回路还包括设置在电动机的流体出口和罐之间的方向控制阀。 方向控制阀可操作以在阻流位置和流动通过位置之间移动。 此外,方向控制阀被配置为将电动机的正转速降低到通过控制泵输出可获得的最低正向速度。 此外,液压风扇回路包括压力控制回路,该压力控制回路构造成在变化的压力下提供先导流体流动以移动方向控制阀。