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    Hydraulic pump with horsepower limiter
    1.
    发明授权
    Hydraulic pump with horsepower limiter 失效
    液压泵具有马力限制器

    公开(公告)号：US3884039A

    公开(公告)日：1975-05-20

    申请号：US47160674

    申请日：1974-05-20

    申请人： OILGEAR CO

    发明人： POURIAN REZA

    IPC分类号： F04B49/00 ,  F16H61/40 ,  F16H61/4157 ,  F16H61/46 ,  F16H61/465 ,  F16H39/46

    CPC分类号： F04B49/002 ,  F16H61/4157 ,  F16H61/433 ,  F16H61/46 ,  F16H61/465 ,  F16H61/475

    摘要： The invention relates to an acceleration and deceleration control system that controls the stroke of a variable displacement pump to limit the horsepower and speed of a hydraulic motor subject to a high inertia load. The control includes a spring on a stroke control member that varies the bias force on a pilot operated valve that controls the supply of control fluid in a stroke control cylinder in response to pump delivery pressure and to pump stroke during acceleration of the motor; and in response to pump inlet pressure, to pump stroke, and to the pressure of control fluid during deceleration of the motor. A control pump being rotatable with the main pump may attain above normal speeds during a deceleration mode of operation to deliver control fluid at above normal pressures to limit the braking horsepower and speed of the hydraulic pump for controlled deceleration of the hydraulic motor.

    摘要翻译： 本发明涉及一种加速和减速控制系统，其控制可变排量泵的行程以限制受高惯量负载的液压马达的马力和速度。 该控制器包括在行程控制构件上的弹簧，该弹簧改变先导操作阀上的偏压力，该导向操作阀响应于泵输送压力控制行程控制缸中的控制流体的供应并且在马达的加速期间泵送冲程; 并且响应于泵入口压力，泵的行程以及减速期间控制流体的压力。 与主泵一起旋转的控制泵可以在减速操作期间达到高于正常速度，以便在高于正常压力下输送控制流体，以限制用于液压马达控制减速的液压泵的制动马力和速度。

    Fluid device having interchangeable displacement control means
    2.
    发明授权
    Fluid device having interchangeable displacement control means 失效
    具有可交换位移控制装置的流体装置

    公开(公告)号：US3806280A

    公开(公告)日：1974-04-23

    申请号：US18166371

    申请日：1971-09-20

    申请人： OILGEAR CO

    发明人： BOBIER W

    IPC分类号： F01B3/10 ,  F04B1/20 ,  F04B1/32

    CPC分类号： F01B3/106 ,  F04B1/20 ,  F04B1/2035 ,  F04B1/324

    摘要： A fluid device of the axial piston type having high and low pressure operating passages, one of which may be an inlet and the other an outlet depending upon the pumping or motoring function of the device and the direction of rotation. The fluid device, which is of the variable displacement type, has a rotatable cylinder barrel with one end of each of a plurality of pistons disposed for reciprocation within cylinder bores at one end of the cylinder barrel, and cylinder ports successively communicating each of the cylinder bores with arcuate inlet and outlet passages formed in a valving face disposed at the opposite end of the cylinder barrel. The other ends of the pistons engage a pivotably mounted thrust plate adapted to impart a reciprocal movement to the pistons within the cylinder bores as the cylinder barrel is rotated. In one example of the invention, the thrust plate is provided with a coupling mechanism adapted to be operated by any one of a plurality of interchangeable displacement control mechanisms which vary the inclination of the thrust plate with respect to the axis of rotation of the cylinder barrel and thus the amount of reciprocal movement of the pistons within the cylinder barrel. The device is adapted to be converted into a manifold system adapted to accommodate a plurality of valves with a minimum of external fluid conduits.

    摘要翻译： 具有高低压操作通道的轴向活塞式流体装置，其中一个可以是入口，另一个可根据装置的泵送或起动功能以及旋转方向进行。 具有可变排量型的流体装置具有可旋转的气缸筒，其中每个活塞的一端设置用于在气缸筒的一端的气缸孔内往复运动，并且气缸端口连续地连通每个气缸 具有形成在设置在气缸筒的相对端的阀面中的弓形入口和出口通道的孔。 活塞的另一端接合可枢转安装的推力板，其适于在气缸筒旋转时向气缸孔内的活塞施加往复运动。 在本发明的一个示例中，推力板设置有联接机构，其适于由多个可互换位移控制机构中的任何一个操作，其改变推力板相对于气缸筒的旋转轴线的倾斜度 因此活塞在缸筒内的往复运动量。 该装置适于转换为适于容纳具有最少外部流体导管的多个阀的歧管系统。