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39 条记录 (耗时 0.015 秒)

    Control device for hoisting machines
    4.
    发明授权
    Control device for hoisting machines 失效
    起重机控制装置

    公开(公告)号：US3917074A

    公开(公告)日：1975-11-04

    申请号：US42604373

    申请日：1973-12-19

    申请人： HAVARD JEAN ,  CHARONNAT HENRI ,  COVA FRANCOIS

    发明人： HAVARD JEAN ,  CHARONNAT HENRI ,  COVA FRANCOIS

    IPC分类号： B66C13/30 ,  B66C23/00 ,  B66C23/88

    CPC分类号： B66C13/30 ,  B66C23/00 ,  B66C2700/03 ,  B66C2700/082

    摘要： For controlling the movements of the jibs of a first crane and at least a second crane mounted in opposed relation on fixed stands on each side of a handling area so that a load suspended from the two cranes maintains a constant predetermined orientation within said handling area irrespective of the swinging and steeve of the first crane. The device comprises a first movable arm connected to the jib of the first crane so as to reproduce the movements in swinging and steeve of the first crane, a second movable arm connected to the jib of the second crane and mechanically connected to the first arm in such manner as to effect movements corresponding to the position that the jib of the second crane must occupy in accordance with the position of the jib of the first crane given by the first arm.

    摘要翻译： 为了控制第一起重机的起重臂和至少一个彼此相对安装的第二起重机的运动，在处理区域的每一侧上的固定机架上，使得悬挂在两个起重机上的负载在所述操作区域内保持恒定的预定取向 的第一台起重机的摆动和钢筋。 该装置包括连接到第一起重机的起重臂的第一可动臂，以便再现第一起重机的摆动和转动中的运动;第二可移动臂，连接到第二起重机的起重臂并机械连接到第一臂 这样的方式能够实现与第二起重机的起重臂所占据的位置相对应的运动，这是根据由第一臂所提供的第一起重机的起重臂的位置。

    Motion control system
    5.
    发明授权
    Motion control system 失效

    公开(公告)号：US3624783A

    公开(公告)日：1971-11-30

    申请号：US3624783D

    申请日：1970-06-12

    申请人： SANTA FE INT CORP

    发明人： CHANG NUKE MING

    IPC分类号： B66C13/02 ,  B66C13/30 ,  B65G47/00

    CPC分类号： B66C13/02 ,  B66C13/30 ,  B66C2700/082 ,  Y10S254/90

    摘要： Disclosed is an open loop control for maintaining constant tension in a cable connecting two bodies. Among the applications of the system are transfer of a load between a pier and a vessel or between two vessels, maintaining constant tension in a cable between two vessels, barge towing, underwater pipelaying, etc. The system includes a motion sensor, and a motion-compensator subsystem to generate a control signal in synchronism with the motion being sensed but at a fixed phase offset in relation thereto. The control signal operates a motor or the like at a fixed speed forward or reverse to compensate for the sensed motion with the phase offset compensating for the reversal time lag between full speed in opposite directions present in the motor system.

    Auxiliary drive arrangement for vehicles operating under wind pressure
    7.
    发明授权
    Auxiliary drive arrangement for vehicles operating under wind pressure 失效
    用于在风压下运行的车辆的辅助驱动装置

    公开(公告)号：US3559022A

    公开(公告)日：1971-01-26

    申请号：US3559022D

    申请日：1968-02-01

    申请人： TAX HANS

    发明人： TAX HANS

    IPC分类号： B66C13/30 ,  H02P5/74 ,  H02P5/747 ,  H02P7/28

    CPC分类号： B66C13/30 ,  B66C2700/082 ,  H02P5/74 ,  H02P5/747

    摘要： AUXILIARY TRACTION FORCE IS EXERTED ON A TRAVELING CRANE IN A DIRECTION TO OPPOSE WIND PRESSURE BY A REVERSIBLE ELECTRIC INDUCTION MOTOR HAVING A WOUND ROTOR AND A VARIABLE RESISTANCE ARRANGEMENT IN CIRCUIT WITH THE ROTOR WINDINGS. A VANE AND AN ANEMOMETER ARE CONNECTED BY TRANSDUCERS TO THE MULTIPLIER REGISTER OF A COMPUTER WHICH CONTROLS THE RESISTANCE IN THE ROTOR CIRCUIT IN PROPORTION TO THE VECTOR OF THE WIND VELOCITY IN THE PATH OF THE CRANE TRAVEL. THE MOTOR ROTATES IN A DIRECTION DETERMINED BY THAT OF THE VECTOR, WHEREBY THE EFFECTS OF WIND PRESSURE ON THE RATE OF CRANE TRAVEL AGAINST THE WIND OR WITH THE WIND MAY BE COMPENSATED FOR.