Hydraulic inner die for segmented box girder

Abstract

The invention discloses a hydraulic inner die for a segmented box girder, which comprises a girder (2), wherein a template system (1) is arranged on the girder (2) which is connected with a guide post device (3) through a guide sleeve (15); a jacking oil cylinder (14) is arranged between the guide post device (3) and the girder (2); the guide post device (3) is arranged on a walking rail frame (7); the template system (1) comprises a top template (19) arranged on the girder (2); an upper moving template (18) and a lower moving template (12) are sequentially and symmetrically arranged at the left side and the right side of the top template (19); the top template (19) is connected with the upper moving template (18), and the upper moving plate (18) is connected with the lower moving plate (12) by a hinge; side oil cylinders (17) are respectively arranged between the top template (19) and the upper moving template (18) as well as between the upper moving plate (18) and the lower moving plate (12); and one end of the walking rail frame (7) is connected with a detachable die moving bracket. The hydraulic inner die is safe and convenient to use, is easy for mounting the template, stripping the die and detaching and moving the die and has favorable integral stability.

Description

technical field [0001] The invention relates to a segmental girder box girder hydraulic internal mold. Background technique [0002] At present, the inner mold of the prefabricated segmental girder box girder mostly adopts a movable inner mold structure, which is composed of a formwork and a formwork support system forming the inner cavity of the box girder. The traditional formwork support system of the inner formwork mostly adopts a mechanical support method, and the formwork is difficult to install and remove. And the efficiency is low, and it is not safe to use; Chinese patent application 201010519858.0 discloses a hydraulic internal formwork of a combined box girder. Compared with the traditional mechanical internal formwork support system, it is safe to use, easy to install and demould, and high in efficiency, but There are the following deficiencies: 1. The stability of the formwork system is insufficient. The reason is that the roof 11 in the application documents is...

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Problems solved by technology

[0002] At present, the inner mold of the prefabricated segmental girder box girder mostly adopts a movable inner mold structure, which is composed of a formwork and a formwork support system forming the inner cavity of the box girder. The traditional formwork support system of the inner formwork mostly adopts a mechanical support method, and the formwork is difficult to install and remove. And the efficiency is low, and it is not safe to use; Chinese patent application 201010519858.0 discloses a hydraulic internal formwork of a combined box girder. Compared with the traditional mechanical internal formwork support system, it is safe to use, easy to install and demould, and high in efficiency, but There are the following deficiencies: 1. The stability of the formwork system is insufficient. The reason is that the roof 11 in the application documents is installed on the roof longitudinal beam 14, and the roof longitudinal beam 14 is installed on the adjustment column 2. The formwork system passes the adjustment column 2 and the guide column. The relative sliding between 3 is installed in place, and most of the weight of the formwork system and concrete passes through the adjustment column 2 to the guide column 3 and then to the main beam 4, so that it may be due to the rigidity of the adjustment column 2 and the guide column 3 and the combined weight Factors such as bearing capacity lead to deformation, which affects the stability of the formwork system; 2. Difficulty in moving the formwork, a. The formwork system and formwork support system The internal formwork needs to be removed from the inner cavity of the box girder as a whole, although the inner formwork is in the inner cavity of the box girder When moving in the middle, you can use the guide rail 42 at the bottom of the main beam 4 and the anti-roller 51 on the support base 5 to move, but when a part of the inner mold is moved out of the inner cavity of the box girder, it needs to be hoisted to move out safely, and it must be removed. When the next beam making position is reached, it also needs to be lifted; b. After the inner mold is moved out of the inner cavity of the box girder, the supporting base needs to be lifted to move out of the inner cavity of the beam

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