The invention discloses a tower crane with a waterproof structure, and relates to building machinery. A lifting bump part and a balancing bump part which are opposite in position are arranged on a rotary table; a lifting arm insertion slot is formed in the lifting bump part; a lifting rotary table is arranged in the lifting arm insertion slot; a lifting rotary shaft is arranged on the lifting rotary table; a lifting arm is arranged on the lifting rotary shaft; a balancing arm insertion slot is formed in the balancing bump part; a balancing rotary table is arranged in the balancing arm insertion slot in a sliding mode; a balancing rotary shaft is arranged on the balancing rotary table; a balancing arm is arranged on the balancing rotary shaft; the lifting arm and the balancing arm are provided with a stay cord tower A and a stay cord tower B; the crane top is provided with a rope stretching device A and a rope stretching device B; a counterweight lifting device is jacked in a jacking sleeve rack; the counterweight lifting device can move up and down inside a standard knot; and a counterweight slide path is arranged on the balancing arm. Compared with the prior art, the tower crane not only can quickly mount and dismount a counterweight block when typhoon comes or under other high wind states, but also can bend the lifting arm and the balancing arm for reducing a wind area for keeping the gravity center of a tower body stable after the counterweight block is dismounted.
Tower crane with waterproof structure
2016-02-03
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |