The invention discloses a tower crane, and relates to a construction engineering machinery. The tower crane comprises a base, a tower body, a jacking sleeve frame, a rotary table, a crane boom, a balance arm and balancing weights; the tower body is formed by setting up a plurality of standard sections; the jacking sleeve frame can move on the standard sections; the rotary table is arranged on the top part of the jacking sleeve frame; the crane boom and the balance arm are arranged on the rotary table; the crane boom and the balance arm are opposite in position; a balancing weight lifting device is arranged on the inner top of the jacking sleeve frame; the balancing weight lifting device can vertically move in the standard sections; a balancing weight slideway which is matched with the balancing weight lifting device is arranged on the balance arm; and a fixing device used for fixing the balancing weights is also arranged on the balance arm. Compared with the prior art, the tower crane has the beneficial effects that the balancing weights can be rapidly assembled and disassembled; when a typhoon comes or at other gale states, the balancing weights can be rapidly disassembled to maintain the stability of the gravity center the tower body; and the problems in the prior art that the balancing weights need to be assembled by using a crane, so that the assembly efficiency is low, and the speed is low are solved.
Tower crane
2016-02-03
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |