Prestress concrete box girder hydraulic internal mold vehicle as well as hydraulic internal mold system

Abstract

The invention discloses a hydraulic internal moulding vehicle of a prestressed concrete box girder which is used in railways, public roads, city highway bridges, and comprises a composite internal moulding board, a plurality of hydraulic oil cylinder sets, a surge car and a plurality of groups of stay bars, the surge car is arranged inside an inner cavity of the composite internal moulding board,and a top moulding board inside the composite internal moulding board is respectively butt connected with end surfaces of a left moulding board, a right moulding board and a middle moulding board; a telescopic oil cylinder of the top moulding board and telescopic oil cylinders of the left, the right and the middle moulding boards are respectively hinged with the surge car and inner surfaces of thetop moulding board and the middle moulding board, and telescopic oil cylinders of the left moulding board, the right moulding board and a lower moulding board are respectively hinged with the lower moulding board and the middle moulding board; the composite internal moulding board is supported by the stay bars after being set up. The invention further provides a hydraulic internal molding systemof the prestressed concrete box girder. The middle moulding board of the hydraulic internal moulding vehicle adopts a linear movable demoulding way that is the same with the top moulding board, thus leading the peeling of the moulding board to be easier, the required space for moving the moulding board to be smaller and consequently the moulding board to be easier to pass through prepared holes onan end clapboard of the box girder, and the internal moulding system has stronger adaptive capacity and the arrangement of the hydraulic oil cylinders is more reasonable.

Description

technical field [0001] The invention relates to a hydraulic internal mold device used in the production of prestressed concrete box girders for bridges of railways, highways and urban roads. Background technique [0002] Prestressed concrete box girder has simple structure, elegant appearance, convenient manufacture, and strong bearing capacity. It occupies a dominant position in railways, highways, and urban road bridges. Its production is divided into factory prefabrication and bridge site pouring. The main production process is mold installation. , Rebar binding, concrete pouring and maintenance, mold removal, etc. The box girder production mold is composed of inner formwork, outer formwork, wing plate formwork, side formwork, end formwork and supporting foundation. The inner formwork is generally composed of multiple formwork and its supporting structure, and the installation and removal are all done manually. Its shortcomings are poor working environment, high labor in...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the difficult problem of demoulding in the hydraulic internal mold device used in prestressed concrete box girders such as railways, highways, urban road bridges, etc.

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