Opening-closing pier passing box girder overhaul construction trolley and working method thereof

Abstract

The invention discloses an opening-closing pier passing box girder overhaul construction trolley, comprising trolley trusses built on two sides of a box girder. The trolley truss comprises a first truss built on the outer side of the box girder and a second truss built on the inner side of the box girder. A bottom truss is connected between the bottom of the first truss and the bottom of the second truss. The outer end of the bottom truss is hinged with the bottom of the first truss. The inner end of the bottom truss is fixed with the bottom of the second truss in a cooperated manner. The inner end of the bottom truss is connected with a winch through a steel wire rope. The steel wire rope comprises a first steel wire rope fixedly connected with the inner end of the bottom truss and a second steel wire rope winded on a drum of the winch. The end of the first steel wire rope is fixedly connected with the end of the second steel wire rope through a rope clip. The winch is fixed on the second truss. The top of the trolley truss is provided with a travelling mechanism which travels along an axis direction of the box girder. Through hinge joint of the bottom truss and the first truss, and fixation of the bottom truss and the second truss, large opening-closing type pier passing construction is realized, and the construction trolley can be used in various girder system construction.

Description

technical field [0001] The invention relates to the technical field of bridge construction equipment, in particular to an open-and-close type box girder inspection and construction trolley passing through a pier and a working method thereof. Background technique [0002] With the continuous development of bridge construction, the main girder structure of the bridge has various forms, such as steel box girder, steel-concrete composite beam, and concrete beam. The construction forms include bridge deck crane installation, bridge erecting machine installation, and cast-in-place support. Most of them adopt integral pier body and double-width separated bridge deck structure. The assembly and gluing of separated box girder sections, the construction of wet joints, and the decoration of the bottom of the beam all need to be carried out on the construction platform. Currently, the trolley used for the construction of the separated box girder has a truss integral type and a truss bea...

AI Technical Summary

Problems solved by technology

The truss integral maintenance trolley is dismantled every time the construction is completed, and then installed to the next span, which requires the cooperation of lifting equipment, many procedures and troublesome construction; the construction trolley is articulated along the free end when disconnected in the middle of the truss beam. The separated box girder structure that can adapt to the split pier body is limited for the integral pier body

The construction of box girders is basically high-altitude operations, and the construction is difficult and has great potential safety hazards.

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