Split type cable crane and construction method

Abstract

The invention discloses a split type cable crane and a construction method. The split type cable crane comprises a lifting support, lifting devices and swinging and moving devices, wherein the lifting support is arranged below a main cable and supports a to-be-erected beam section; the lifting devices are arranged on the main cable, the top of any set of lifting device is fixedly connected with the main cable on the same side, the bottom of any set of lifting device is connected with the lifting support on the same side, and the lifting devices are used for adjusting the vertical distance between the lifting support and the main cable; and the swinging and moving devices are arranged above the main cable, any set of swinging and moving device comprises two crown blocks, the two crown blocks are arranged at intervals and walk along a traction cable, and any crown block is detachably connected with the lifting device on the same side through a swinging and moving rope. According to the invention, the split type structure is adopted, the lifting device is arranged on the main cable in a modular mode, the lifting support supports the to-be-erected beam section from the lower portion, beam section installation of a cable beam intersection section is achieved, the swinging and moving devices are matched, rapid movement of the lifting device is achieved through alternate swinging and moving of the crown blocks, and the erection construction of a suspension bridge girder under different conditions is met while the construction efficiency is ensured.

Description

technical field [0001] The invention relates to the technical field of lifting equipment. More specifically, the present invention relates to a split type cable-loaded crane and a construction method. Background technique [0002] In the construction of suspension bridges, the main girder of the suspension bridge is usually set up by an integrated cable-loaded crane or cable hanger with the main girder spanning the main bridge section and supported on both sides on the main cable. Traditional cable-mounted cranes are mostly integrated structures. When there is a span change between the main cables, the applicability of the integrated cable-mounted crane is weak, and it is necessary to change the length and strength of the main girder of the cable-mounted crane to achieve smooth implementation. The full-length erection of the main girder of the suspension bridge seriously affects the construction progress; and due to the limitation of the construction structure, when the hei...

AI Technical Summary

Problems solved by technology

Traditional cable-mounted cranes are mostly integrated structures. When there is a span change between the main cables, the applicability of the integrated cable-mounted crane is weak, and it is necessary to change the length and strength of the main girder of the cable-mounted crane to achieve smooth implementation. The full-length erection of the main girder of the suspension bridge seriously affects the construction progress; and due to the limitation of the construction structure, when the height of the main cable is lower than the height of the girder section to be erected, the integrated cable-loaded crane cannot erect the intersecting section of the cable girder

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