The invention relates to the field of building crane equipment, in particular to a tower crane which comprises a tower head, an arm root section, a variable-amplitude oil cylinder and a pull rod assembly. One end of the tower head lower part is connected with the lower joint of the arm root section; one end of the pull rod assembly is connected with the upper part of the tower head, the other end is connected with an upper joint of the arm root section, and the pull rod assembly is telescopic to change length; and one end of the variable-amplitude oil cylinder is connected with the upper joint of the boom root section, and the other end is connected with the upper part of the tower head. As the tower crane comprises the length-adjustable pull rod assembly, the length of the pull rod assembly is adjusted along with the amplitude variation of the cargo boom when the cargo boom is subjected to amplitude variation, and when the cargo boom is in a non-working state, the position of the cargo boom is locked by fixing the length of the pull rod assembly, so that the position of the cargo boom can be adjusted. Therefore, the position of the cargo boom in a non-working state is not changed.

    本申请涉及建筑起重机设备领域,具体涉及一种塔式起重机,该塔式起重机包括塔头、臂根节、变幅油缸和拉杆组件;塔头下部的一端与臂根节的下接头连接;拉杆组件一端与所述塔头上部连接,另一端与臂根节的上接头连接,且拉杆组件可伸缩改变长度;变幅油缸一端与臂根节的的上接头连接,另一端与塔头的上部连接。由于本发明中塔式起重机包括长度可调节的拉杆组件,在起重臂进行变幅时,随着起重臂的变幅,拉杆组件长度随之调整,当起重臂处于非工作状态时,通过固定拉杆组件的长度,从而锁定起重臂的位置,故起重臂非工作状态下位置不会发生变化。


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    Title :

    Tower crane


    Additional title:

    塔式起重机


    Contributors:

    Publication date :

    2022-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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