A jacking machine for bridge construction

Abstract

The invention discloses a jacking machine for bridge construction, which belongs to the field of bridge construction, and comprises a housing, a jacking cylinder, and a jacking platform. The housing is provided with a gear transmission mechanism for pushing the jacking platform to move horizontally; The gear transmission mechanism includes a carry gear and an abdication gear. Both the carry gear and the abdication gear are gears with missing teeth. A rack is provided on the lower side of the push table. When the carry gear meshes with the rack, the push When the abdication gear meshes with the rack, the push table abdicates. Therefore, there is no need to change the direction of the adj The jacking machine can adapt to faster jacking, which solves the problem in the prior art that the power system needs to change direction continuously, which leads to the need to prolong the time of changing direction, resulting in low pushing efficiency.

Description

technical field [0001] The invention relates to bridge construction equipment, in particular to a jacking machine for bridge construction. Background technique [0002] At present, the erection of highway and railway bridges is mostly realized by the jacking method. The jacking method is to jack up the steel box girder forming the main body of the bridge by a plurality of jacking machines, and then push forward step by step. The amount is less; since the jacking machine needs to be placed on a temporary pier to provide the height required for the jacking, the size of the jacking machine cannot be too large; the stroke of the existing jacking machine is generally 200mm-500mm, which means To complete the push of a bridge requires a lot of back and forth pushes. During the back and forth push, the pusher needs to constantly change its pushing direction, and the power system that controls the pusher back and forth is in the process of changing directions. The instantaneous chan...

AI Technical Summary

Problems solved by technology

[0004] The present invention is to overcome the process of pushing the bridge assembly in the prior art. Since the pusher needs to retreat and return after pushing the bridge assembly, its pushing direction needs to be constantly changed, resulting in the need for the power mechanism of the pusher to change direction constantly, thus causing To solve the problem of large impact and damage to the power mechanism, a jacking machine for bridge construction is provided. The power mechanism can complete the advance and retraction of the jacking platform without repeated direction changes, thus avoiding the need for direction changes. The impact brought by the time can adapt to the faster pushing speed, thus greatly improving the pushing efficiency

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