Hoisting equipment used for steel box girder in complex environment

Abstract

The invention discloses hoisting equipment used for a steel box girder in a complex environment. The hoisting equipment comprises a lower girder body, an upper girder body, a rotating shaft and threetelescopic rods, wherein the lower girder body is provided with four hoisting points; the upper girder body is located above the lower girder body and provided with four connecting columns, the lowerend of any connecting column penetrates through the lower girder body and is provided with a distributive girder mechanism, and the bottom of each distributive girder mechanism is connected with the steel box girder to be hoisted; the rotating shaft is located between the upper girder body and the lower girder body and rotatably connects the middle of the upper girder body and the middle of the lower girder body together; and the three telescopic rods are located between the upper girder body and the lower girder body, and the two ends of any telescopic rod are connected with the upper girderbody and the lower girder body respectively. Transition parts of the upper girder body and the lower girder body are arranged between a steel wire rope connected with a crane and the steel box girderto be hoisted, the shaking amplitude of the steel box girder caused by other external forces (such as wind force) in the complex environment is greatly reduced, the probability of construction accidents caused by shaking of the steel box girder in the hoisting process is greatly reduced, and the safety of construction is improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction. More specifically, the invention relates to a complex environment steel box girder hoisting equipment. Background technique [0002] With the rapid development of the economy of the times, the requirements for the convenience of road traffic are also getting higher and higher. The construction of bridges is undoubtedly one of the most important undertakings to improve the convenience of road traffic. The construction of bridges is usually done through multiple prefabricated The steel box girder is spliced ​​together. During the construction process, the prefabricated steel box girder needs to be hoisted to the construction point by hoisting equipment. During the hoisting operation, the precise positioning of the steel box girder is directly related to the quality of the bridge erection. The existing hoisting equipment will The box girder is directly connected to the hoist through a w...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the economy of the times, the requirements for the convenience of road traffic are also getting higher and higher. The construction of bridges is undoubtedly one of the most important undertakings to improve the convenience of road traffic. The construction of bridges is usually done through multiple prefabricated The steel box girder is spliced ​​together. During the construction process, the prefabricated steel box girder needs to be hoisted to the construction point by hoisting equipment. During the hoisting operation, the precise positioning of the steel box girder is directly related to the quality of the bridge erection. The existing hoisting equipment will The box girder is directly connected to the hoist through a wire rope. The flexibility of the wire rope causes the steel box girder to shake seriously during hoisting, especially in complex environments such as the sea, which poses a greater safety hazard; other existing hoisting equipment only It is possible to hoist the steel box girder to a location close to the construction, and then adjust the horizontal position and inclination angle of the steel box girder by pulling it manually, which cannot ensure the precise positioning of the steel box girder, which leads to a decrease in the quality of bridge erection

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