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10 条记录 (耗时 0.025 秒)

    Elevator door control
    1.
    发明授权
    Elevator door control 失效

    公开(公告)号：US3598202A

    公开(公告)日：1971-08-10

    申请号：US3598202D

    申请日：1968-12-30

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： KIRSCH ANDREW F ,  OSTRANDER WILLIAM M

    IPC分类号： B66B5/02 ,  B66B1/00

    CPC分类号： B66B5/024

    摘要： In response to excessive heat on the corridor side of an elevator hatch door, a spring-loaded plunger is released which repositions the hatch door driving block associated with the master door operator so that the hatch door is not automatically unlocked and opened by the vane carried on the car door when the car door is opened adjacent the associated landing. The hatch door can still be opened manually by an occupant of the car who releases the locking mechanism by rotating the driving block against the force exerted by the plunger.

    Elevator system
    8.
    发明授权
    Elevator system 失效
    电梯系统

    公开(公告)号：US3902572A

    公开(公告)日：1975-09-02

    申请号：US41975973

    申请日：1973-11-28

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： OSTRANDER WILLIAM M

    IPC分类号： B66B1/24 ,  B66B1/16 ,  B66B1/28 ,  B66B1/30 ,  B66B1/52 ,  B66B5/06

    CPC分类号： B66B1/30 ,  B66B1/285 ,  Y02B50/125 ,  Y02B50/142

    摘要： An elevator system having speed control apparatus providing first, second and third acceleration modes which provide progressively higher maximum speeds for an elevator car. Control circuitry associated with each landing to be served by the elevator car is successively enabled in response to the location and movement of the elevator car, with the number of floors from the last stop of the elevator car to the floor of the next stop being used to select one of the three acceleration modes. Protective apparatus responsive to the voltage across the armature circuit of the elevator drive motor is also provided which stops the elevator car when the rate of change of this voltage exceeds a predetermined magnitude, or the magnitude and polarity of the voltage indicates the elevator car is traveling at or above a predetermined speed in a direction opposite to the travel direction selected by the control circuitry.

    摘要翻译： 一种具有速度控制装置的电梯系统，其提供第一，第二和第三加速模式，其为电梯轿厢提供逐渐更高的最大速度。 与电梯轿厢服务的每个着陆相关联的控制电路相应地响应于电梯轿厢的位置和移动被依次启用，其中从电梯轿厢的最后停止到下一个停止的地板的楼层的数量被使用 选择三种加速模式之一。 还提供了响应电梯驱动电动机的电枢电路两端的电压的保护装置，当该电压的变化率超过预定值时停止电梯轿厢，或者电压的大小和极性表示电梯轿厢行驶 在与由控制电路选择的行进方向相反的方向上等于或高于预定速度。

    Motor control system
    9.
    发明授权
    Motor control system 失效

    公开(公告)号：US3599754A

    公开(公告)日：1971-08-17

    申请号：US3599754D

    申请日：1969-06-30

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： CAPUTO WILLIAM R ,  OSTRANDER WILLIAM M

    IPC分类号： B66B1/30 ,  B66B5/10

    CPC分类号： B66B1/30 ,  B66B5/10 ,  Y02B50/125

    摘要： In a direct current drive system for an elevator, a high-gain amplifier controls the speed of the motor through variable energization of the generator field in accordance with an error signal developed as a function of the difference between a signal developed by a pattern generator and a signal developed by a tachometer. Switchless feedback circuits are provided to bring the car smoothly to a creep speed should the pattern generator or tachometer generator fail as an open circuit. A noncontinuous feedback circuit and variable damping on the pattern generator minimize jerk on one floor runs but do not interfere with leveling. Should the pattern generator fail to initiate deceleration by a predetermined point as the car approaches a terminal, a fixed low speed signal brings the car to the landing. When the car is operating on reduced pattern signals, normal door preopening is discontinued.