Tower body erecting and descending mechanism for tower crane and erecting and descending method thereof

Abstract

The invention discloses a tower body erecting and descending mechanism for a tower crane. The tower body erecting and descending mechanism is installed on a tower body and a rotary table. The tower body comprises an upper tower body and a lower tower body which are hinged to each other, and the upper tower body comprises an inner tower body and an outer tower body which are sleeved with each other. The tower body erecting and descending mechanism comprises a connecting assembly, a tower pulling assembly, a tower pulling assembly, a jacking assembly and a locking assembly. The tower pulling assembly, the jacking assembly and the locking assembly are connected with the tower body respectively through the connecting assembly. The upper tower body and the lower tower body are driven to rotate through the tower pulling assembly, erection of the tower body is achieved, the inner tower body is jacked up through the jacking assembly and is safely and reliably locked at a target position through the locking assembly, tower body erecting and descending movement is flexible and rapid, the safety coefficient in the tower body erecting and descending process is greatly improved, and the tower body erecting and descending mechanism has the advantages of being simple in structure, simple and convenient to operate, wide in applied range, safe and reliable and the like. The invention further provides an erecting and descending method for the tower body erecting and descending mechanism.

Description

technical field [0001] The invention relates to the technical field of tower crane erection, in particular to a tower body vertical lowering mechanism of the tower crane and a vertical lowering method thereof. Background technique [0002] Due to its inherent large and stable characteristics, tower cranes are widely used in the transportation of building construction materials and the installation of building components. Usually, tower cranes are installed on site, and then disassembled and shipped on site after the completion of the project. The existing downswing tower cranes generally include tower body, slewing mechanism, hoisting mechanism, erecting mechanism and jib, etc. The erection method generally adopts Secondary erection, including the three operations of erecting the tower, jacking and lifting, that is, erecting the tower body first, then pulling up the jib after the tower body is erected, and finally releasing the tower crane hook, if the socket is used Type t...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex structure, inconvenient operation, slow erection speed, low erection efficiency and poor safety in the vertical lowering mechanism of the tower crane in the prior art.

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