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    • 5. 发明授权
    • Crane
    • 起重机
    • US4782961A
    • 1988-11-08
    • US16411
    • 1987-02-19
    • Walter Lange
    • Walter Lange
    • B66D1/52B66C23/53
    • B66D1/52Y10S254/90
    • A crane is provided which comprises a hoisting mechanism, which comprises a hoisting rope and a hoisting rope winch. A winch drive for the hoisting rope or a torque-limiting coupling connected between said winch drive and said winch is so controlled that in a period of time which preferably exceeds one second to the rope-pulling force exerted on the hoisting rope is increased in steps or continuously to a value which corresponds to the weight of the load or is sufficient to hoist the load, and that the winch is adapted to be rotated in a payout sense by opposing forces which tend to pull the hoisting rope from the winch and which exceed the instantaneous rope-pulling force.
    • 提供了一种起重机,其包括提升机构,其包括提升绳索和提升绳索绞车。 用于提升绳索的绞盘驱动器或连接在所述绞盘驱动器和所述绞盘之间的扭矩限制联接器被控制,使得在优选地超过一秒的时间段内,施加在提升绳索上的拉绳力逐步增加 或连续地达到对应于负载的重量或足以提升负载的值,并且绞盘适于以倾斜的方式旋转,该相对的力倾向于从绞盘拉动提升绳索并且超过 瞬间拉绳力。