Mobile lifting bracket for building bridge

Abstract

The invention discloses a mobile lifting bracket for building a bridge. The mobile lifting bracket is characterized by comprising a truss structure (1), a beret piece (2), a walking device (3) and a winch (4) and is characterized in that the beret piece (2) is mounted on the top surface of the truss structure (1); the walking device (3) is mounted at the bottom of the truss structure (1); and the winch (4) is mounted at the tail part of the truss structure (1). The mobile lifting bracket for building the bridge, disclosed by the invention, has finite operation positions on the surface of the bridge when being mainly used for building the bridge, can be assembled and disassembled on the bridge surface and can freely move in a lifting position; the lifting position of the lifting bracket can be changed according to construction needs; and the length of a lifting arm of the lifting bracket can be also changed to satisfy various lifting requirements.

Description

technical field [0001] The invention relates to a mobile hoisting support for bridge construction, which belongs to the technical field of bridge engineering. Background technique [0002] In the prior art, when building a bridge, the traditional cantilever hanger device is usually fixed on the bridge deck for hoisting heavy objects from the ground to the bridge deck, and the heavy objects are moved to the bridge deck using the movable beam on the top of the hoisting bracket. The characteristics of this method are: 1. It is necessary to pre-embed large steel plates on the bridge deck as the embedded parts of the cantilever hanger; 3. The cantilever hanger can only be installed on beam section 0~1, and the site below the bridge deck is required to be flat and wide. For some construction sites with poor terrain conditions and small sites, it is necessary to build an operation platform at high cost , to ensure that large transport vehicles loaded with about 30T stay cables can...

AI Technical Summary

Problems solved by technology

The characteristics of this method are: 1. It is necessary to pre-embed large steel plates on the bridge deck as the embedded parts of the cantilever hanger; 3. The cantilever hanger can only be installed on beam section 0~1, and the site below the bridge deck is required to be flat and wide. For some construction sites with poor terrain conditions and small sites, it is necessary to build an operation platform at high cost , to ensure that large transport vehicles loaded with about 30T stay cables can pass on it; 4. Because it is a fixed cantilever hanger, the operating point is limited and inflexible; 5. The size of the hoisting bracket needs to be determined according to the shape and weight of the heavy object. The heavier the object, the larger the size of the cantilever hanger, and the heavier the structure of the lifting bracket