The invention discloses a tail end braking system for tower crane slewing, and relates to the technical field of safety control of building construction hoisting equipment. The braking system comprises a power supply line A and a power supply line C which are used for being connected with a positive electrode end and a negative electrode end of a tower crane slewing braking circuit, and a rechargeable accumulator connected with the tower crane slewing braking circuit in parallel, wherein a normally-open relay K1 and a switch S1 are connected with the power supply line A in series, a normally-closed relay KM is connected between a static contact of the normally-open relay K1 and a positive electrode end of the rechargeable accumulator, a negative electrode end of the rechargeable accumulator is connected with the power supply line C, the switch S1 is arranged between the static contact of the normally-open relay K1 and a positive electrode of the tower crane slewing braking circuit, and the rechargeable accumulator is connected with a charging circuit. According to the tail end braking system for tower crane slewing, when a tower crane is powered off and cannot stop slewing, a tail end braking switch can be turned on, a slewing brake can be made to act to brake the slewing tower crane, and the tail end braking switch can be automatically turned off in a strong wind environment, so that a tower crane jib is prevented from being damaged by wind power.

    本发明公开了一种塔机回转末端制动系统,涉及建筑施工起重设备的安全控制技术领域。该制动系统包括用于连接塔机回转制动电路正负极两端的供电A线、供电C线,以及并联在塔机回转制动电路上的可充电蓄电池,供电A线上串联有常开继电器K1和开关S1,常开继电器K1的静触点与可充电蓄电池的正极端之间连接有常闭继电器KM,可充电蓄电池的负极端与供电C线连接,开关S1设在常开继电器K1的静触点与塔机回转制动电路的正极之间,可充电蓄电池连接有充电电路。本发明的塔机回转末端制动系统在塔机停电无法停止回转时,可打开末端制动开关,可使回转制动器起作用,刹住回转的塔机,并且在大风环境下可自动解除末端制动开关,防止塔机吊臂因风力受损。


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    Title :

    Tail end braking system for tower crane slewing


    Additional title:

    一种塔机回转末端制动系统


    Contributors:
    CHEN RUBAO (author) / LUO CHENGHAI (author) / ZHAO CHAO (author) / DUAN BOXIONG (author)

    Publication date :

    2021-07-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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