A concrete prefabricated box girder spreader

Abstract

The invention relates to a hanging tool for precast concrete box beams. According to the scheme, the hanging tool for the precast concrete box beams comprises a beam. The beam is provided with two vertical positioning holes. The two vertical positioning holes are symmetrically arranged along the vertical section in the longitudinal direction of the beam. The two ends of the beam are correspondingly connected with vertical beams which are arranged below the beam. Vertical beams are provided with extruding blocks which are located below the beam. Extruding blocks are provided with vertical through holes which are matched with the vertical beams. The vertical beams are inserted into the vertical through holes on the extruding blocks through the lower ends of the vertical beams. A structure which enables the extruding blocks to move vertically on the vertical beams is formed. The extruding blocks are provided with fixing holes. The fixing holes are located under the positioning through holes. The side surfaces, close to the fixing holes, of the extruding blocks are inclined planes. An obtuse included angle is formed between the upper end surfaces of the inclined planes and the extruding blocks. The hanging tool for the precast concrete box beams is ingenious in structure and convenient and easy to operate, the problem of uneasy fixing of the precast concrete box beams before hanging is solved, meanwhile, the safety of hanging is improved, and by using the side surfaces of the precast concrete box beams as bearing surfaces, damages for the precast concrete box beams are low.

Description

technical field [0001] The invention relates to the field of hoisting of prefabricated concrete box girders, in particular to a hanger for prefabricated concrete box girders. Background technique [0002] When the concrete prefabricated box girder is hoisted, because the concrete prefabricated box girder is large and difficult to fix, it is usually bound with steel wire ropes and then lifted by hoisting equipment. The premise of this hoisting method is that there must be enough space between the prefabricated concrete box girder and the ground for the wire rope to pass through, otherwise it is very difficult to bind the prefabricated concrete box girder; Shaking is inevitable, the steel wire rope and the concrete prefabricated box girder are squeezed, slid, and misplaced, and the contact area between the steel wire rope and the concrete prefabricated box girder is small, and the pressure is too concentrated, which can easily cause damage to the concrete prefabricated box gir...

AI Technical Summary

Problems solved by technology

[0006] The invention has ingenious structure and convenient operation, which not only solves the problem that it is difficult to place steel wire ropes or other lifting tools on the bottom of the concrete prefabricated box girder before hoisting, but also improves the safety of hoisting, and uses the side of the concrete prefabricated box girder as the Bearing surface, less damage to concrete prefabricated box girder

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