The invention discloses a windproof tower crane and relates to constructional engineering machines. A cargo boom and a balance arm are rotationally arranged on a rotary table. The cargo boom is provided with a first electric telescopic fixing rod, a second electric telescopic fixing rod is arranged on the balance arm, and the rotary table is provided with a first fixing groove and a second fixing groove. A first rope pulling tower and a second rope pulling tower are arranged on the top ends of the cargo boom and the balance arm. A first rope stretching device and a second rope stretching device are arranged on the tower top. The first rope pulling tower and the first rope stretching device are connected through a first rope. The second rope pulling tower and the second rope stretching device are connected through a second rope. A counterweight lifting device is arranged on the top inside a jacking frame and can vertically move in a standard knot. The balance arm is provided with a counterweight slide matched with the counterweight lifting device. Compared with the prior art, a balancing weight can be rapidly mounted and dismounted when a typhoon comes or under other strong wind states, and the cargo boom and the balance arm can be bent after the balancing weight is dismounted so as to reduce the windward area and keep the gravity center of a tower body stable.
Windproof tower crane
03.02.2016
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |