A walking bridge erecting machine and a cable passing method for a cable-passing intermediate bridge

Abstract

The embodiment of the invention discloses a stepping type bridge girder erection machine used for a hawser-passable middle bridge. The stepping type bridge girder erection machine used for the hawser-passable middle bridge comprises main trusses, two step walking mechanisms, a lifting mechanism and three hawser passing mechanisms, wherein the step walking mechanisms are installed on the left sideand the right side of the bottom of the main truss at the bottom; the lifting mechanism is installed at the front end of the main truss at the top, and the top end of the lifting mechanism is fixed tothe corresponding main truss; and the hawser passing mechanisms are installed on the upper portions and the lower portions of the middle portions and the rear ends of the bottoms of the main trusses,and each hawser passing mechanism comprises a middle beam, rotary bearings, fixed shafts, rotary beams and detachable shafts. By the adoption of the stepping type bridge girder erection machine usedfor the hawser-passable middle bridge, the operation that two bridge girder erection machines are adopted for hoisting the beams and then a hawser is installed is not needed, a hawser passing method is simple, and work efficiency is greatly improved.

Description

technical field [0001] The invention relates to a steel girder installation device and a method for a bridge in the middle of a cable, in particular to a walking-type bridge erecting machine and a method for crossing the cable for a bridge in the middle of the cable. Background technique [0002] At present, the traditional construction method of the walking bridge erecting machine used for the installation of the steel beam in the middle of the cable is to set up a walking bridge erecting machine on both sides near the cable, that is, two sets are used for each hoisting. The bridge erection machine hoists a beam and then installs the cables, which is not only a complicated construction method, but also requires the use of two walking bridge erection machines, which greatly reduces the construction efficiency. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the embodiments of the present invention is that, in view of the traditional cable-passing co...

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Problems solved by technology

[0003] The technical problem to be solved by the embodiments of the present invention is that, in view of the traditional cable construction method, two walking bridge erecting machines are required to work at the same time, not only the construction method is cumbersome, but also the construction efficiency is greatly reduced. A Walking Bridge Erecting Machine for Cable-Cable Center Bridges

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