Longitudinal moving method for outside die of box girder outer film

Abstract

The invention belongs to bridges and particularly relates to a longitudinal moving method for an outside die of a box girder outer film during box girder construction. The outside die finishes lifting action by using a hydraulic or mechanical lifting device. The longitudinal moving method is characterized by adopting the following steps of: paving die moving dual rails for moving a die moving trolley below the outside die in parallel and in advance; separating the outside die from the outer film, folding a jack and descending the outside die by using the lifting device to make the outside die fall on the die moving trolley; and finally, dragging the moving trolley by using a windlass and dragging the outside die to a girder producing pedestal. The longitudinal moving method has the advantages that the outside die is longitudinally moved by adopting an artificial windlass, thus the mutual interference influence of the cross operation of equipment in a girder producing area is reduced; meanwhile, two girder producing tables share a set of steel die, thus the cost amortization is reduced by two times and the turnaround speed of one girder producing table is not influenced; meanwhile, the steel dies of which the number is only one half that of the girder producing tables can meet the work requirements, so that the cost for producing the girders is greatly reduced.

Description

technical field [0001] The bridges of the invention specifically relate to a method for longitudinally moving the outer side formwork of the box girder outer formwork used in box girder construction. Background technique [0002] At present, there are quite a few beam-making yards at home and abroad that use one beam-making platform and one set of outer molds to fix the outer molds. The outer molds are supported on a rigid foundation and are installed and demoulded by positive and negative buckle spiral lifts, so that the box girder moves The method of hoisting and lifting the beam by the transfer machine must be used to reach the beam storage platform. Although the work efficiency is improved on the surface, it increases the probability of mutual interference between the transfer machine and the door crane in the beam manufacturing area, and at the same time, the amortization cost of the steel mold increases. But now the unit price of beams has been reduced and there is...

AI Technical Summary

Problems solved by technology

[0002] At present, there are quite a few beam-making yards at home and abroad that use one beam-making platform and one set of outer molds to fix the outer molds. The outer molds are supported on a rigid foundation and are installed and demoulded by positive and negative buckle spiral lifts, so that the box girder moves The method of hoisting and lifting the beam by the transfer machine must be used on the beam storage platform. Although the work efficiency is improved on the surface, it increases the probability of mutual interference between the transfer machine and the door crane in the beam manufacturing area, and the amortization cost of the steel mold increases.

But now the unit price of beams has been reduced and there is not much profit

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