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208 条记录 (耗时 0.012 秒)

    Braking apparatus for hoists
    91.
    发明授权
    Braking apparatus for hoists 失效
    起重机制动装置

    公开(公告)号：US3982728A

    公开(公告)日：1976-09-28

    申请号：US478103

    申请日：1974-06-10

    申请人： Bernard Elliott Shaw

    发明人： Bernard Elliott Shaw

    IPC分类号： B66D5/26 ,  F16D49/00 ,  F16D59/00 ,  F16D65/14 ,  B66D1/26

    CPC分类号： F16D49/00 ,  B66D5/26 ,  F16D59/00 ,  F16D2129/043

    摘要： A braking mechanism for a hoist incorporating two winding drums with brakes biased to move to the brakes applied state and fluid pressure means controllable by valves to operate in opposition to the biasing means has a bridge pipe containing a stop valve interconnecting the individual fluid supply lines leading from the control valves to the fluid pressure means. It also has isolator stop valve means arranged to control the flow of operating fluid to the control valves. The stop valve in the bridge pipe and the isolator stop valve may be arranged for remote control and may be biased so that the stop valve in the bridge pipe tends to open and the isolator stop valve tends to close.

    摘要翻译： 一种用于包括两个卷绕鼓的制动机构，其中制动器被偏置以移动到制动器施加状态，并且由阀控制的流体压力装置与偏置装置相对地操作具有桥管，该桥管包含将各个流体供应管线 从控制阀到流体压力装置。 它还具有隔离器截止阀装置，其布置成控制到控制阀的工作流体的流动。 桥管中的截止阀和隔离器截止阀可以布置成用于远程控制，并且可以被偏置，使得桥管中的截止阀趋向于打开，并且隔离器截止阀趋向于关闭。

    Power control winch
    92.
    发明授权
    Power control winch 失效
    电源控制

    公开(公告)号：US3756564A

    公开(公告)日：1973-09-04

    申请号：US3756564D

    申请日：1970-10-05

    申请人： GEARMATIC CO LTD

    发明人： MURRAY J ,  CHRISTISON S ,  BONAR W

    IPC分类号： B66D1/14 ,  B66D5/26 ,  B66D1/00

    CPC分类号： B66D1/14 ,  B66D1/44 ,  B66D5/26 ,  B66D2700/0158 ,  B66D2700/035

    摘要： A winch having an integral control system wherein the clutch and brake mechanism are hydraulically actuated and the hydraulic actuating system is positioned in the winch housing. The system includes the oil supply, the control valve, the hydraulic pump and an accumulator. The pump is self-compensating and is mounted to be continually actuated by a shaft in the drive train to the winch drum. To reduce the volume of hydraulic fluid normally required in a hydraulic system and to improve the reliability, the valve is a unique no-leak type with the inlet through a bore in the valve spool and an outlet located along only one side of the spool and the valve is used in conjunction with an accumulator which allows release of the brake after shut down of the drive train. The brake mechanism comprises multi-wrap brake bands which are spring-actuated and hydraulically released, the multi-wrap enables relatively high braking force produced by a minimal spring actuating force.

    摘要翻译： 具有整体控制系统的绞盘，其中离合器和制动机构是液压致动的，并且液压致动系统位于绞盘壳体中。 该系统包括供油，控制阀，液压泵和蓄能器。 泵是自补偿的，并且被安装成由传动系中的轴连续地驱动到绞盘鼓。 为了减小液压系统通常所需的液压油体积并提高可靠性，该阀是独特的无泄漏型，其中入口通过阀芯中的孔和仅位于阀芯一侧的出口， 该阀与蓄能器结合使用，该蓄能器允许在关闭传动系之后释放制动器。 制动机构包括弹簧致动和液压释放的多圈制动带，多重卷绕使得能够由最小的弹簧作动力产生的相对较高的制动力。