The invention provides a gantry crane, belongs to the technical field of cranes, and particularly relates to a gantry crane which is characterized in that a lifting drum is arranged in a machine room of the gantry crane; the first end of the lifting steel wire rope is wound and connected to the lifting drum, and the second end bypasses the lifting pulley assembly and is connected with the lifting appliance; a rope changing winding drum is further arranged in the machine room, and the free end of a traction rope connected to the rope changing winding drum in a winding mode can be connected with the first end of the lifting steel wire rope. The rope changing winding drum can release or take back the traction rope. According to the gantry crane, the rope replacing winding drum is arranged in the machine room, and the hoisting steel wire rope is lengthened by using the pulling rope on the rope replacing winding drum, so that new and old hoisting steel wire ropes are replaced below the pulley assembly by using the hoisting power of the hoisting winding drum. The invention further provides a rope replacing method of the gantry crane, and the hoisting steel wire rope can be rapidly, effectively, safely and reliably replaced at low cost.

    本申请提供了一种门座起重机,用于起重机技术领域,具体为一种门座起重机,起升卷筒设置在门座起重机的机房内;起升钢丝绳第一端卷绕连接在起升卷筒上,第二端绕过起升滑轮组件并与吊具相连接;机房内还设置有换绳卷筒,卷绕连接在换绳卷筒上的牵引绳的自由端能与起升钢丝绳的第一端相连接;换绳卷筒能释放或收回牵引绳。上述门座起重机通过在机房内设置换绳卷筒,用换绳卷筒上的牵引绳实现了起升钢丝绳的延长,从而利用起升卷筒自身的卷扬动力在滑轮组件下方实现新旧起升钢丝绳的更换。本申请还提供了一种门座起重机的换绳方法,能够低成本且快速有效安全可靠地更换起升钢丝绳。


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    Title :

    Portal crane and rope changing method thereof


    Additional title:

    一种门座起重机及其换绳方法


    Contributors:
    XIAO CHI (author) / XIA HUI (author) / LIU SHUAIQI (author)

    Publication date :

    2024-01-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / B66D Haspeln , CAPSTANS



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