Long-span load-carrying cable lifting machine and mounting method therefor

Abstract

The invention provides a long-span over loading cable crane and an installation method thereof which relates to a cable crane used in bridge construction and consists of a guy rope tower 1, a cable tower 2, a main cable and a hoisting traction system 3, an anchoring system 4, an electromechanical system 5 and a wind cable system 6. The tower of the cable crane consists of the guy rope tower 1 and the cable tower 2 which is hinged on the top of the guy rope tower 1 and fixedly connected with the bottom of the guy rope tower 1. The invention adopts the techniques of the parallel bearing of a plurality of main cables, the wind cables connected in series, the joint construction of the cable towel and the guy rope tower, etc., thereby greatly improving the loading capability of the long-span cable crane and lowering the manufacturing cost as much as possible. The invention can reduce the influence of the unbalanced horizontal force on the top of the cable tower 2 on the guy rope tower 1 and greatly save the construction cost of the guy rope tower 1. The loading cable crane has strong load-carrying capability, wide loading range and high economic performance.

Description

technical field [0001] The invention relates to a long-span heavy-duty cable crane used in bridge engineering construction. Background technique [0002] With the development of segmental construction technology of long-span bridges at home and abroad, the construction of girder bridges presents a trend of factory manufacturing and on-site large-segment installation. The cable crane is an important equipment for transporting and installing components in the construction of bridge segments, and its hoisting capacity is the key to whether large-scale installation can be realized on site. At present, the maximum rated lifting capacity of cable cranes at home and abroad is 170t (cable cranes for the construction of Egongyan Yangtze River Bridge in Chongqing). With the development of bridge construction, the current lifting capacity of cable cranes is far from being able to meet the needs (Chongqing The steel truss girder installation section of the Caiyuanba Yangtze River Bridg...

AI Technical Summary

Problems solved by technology

At present, the maximum rated lifting capacity of cable cranes at home and abroad is 170t (cable cranes for the construction of Egongyan Yangtze River Bridge in Chongqing). With the development of bridge construction, the current lifting capacity of cable cranes is far from being able to meet the needs (Chongqing The steel truss girder installation section of the Caiyuanba Yangtze River Bridge weighs 280t), and it is urgent to greatly increase the lifting capacity of the cable crane (the rated lifting capacity exceeds 280t)

Images