Construction machinery super lifting device and construction machinery

Abstract

The invention relates to the technical field of engineering equipment, in particular to a super-lifting device for engineering machinery and the engineering machinery. Wherein, the super-lifting device includes a super-lifting mast, a first connection unit and a second connection unit, the super-lifting mast is hinged on the jib device of the construction machine, the super-lifting mast includes a front mast and a middle mast, the front mast has a deployed position and In the folded position, the front mast and the middle mast are configured to be able to be connected through the first connection unit when the super-lift mast is unfolded, and to be connected through the second connection unit when the super-lift mast is folded, and the first connection unit and the second connection unit are both set to The superlift mast can be switched between a fixed state and a pivoting state, and the front mast has a position capable of being turned over simultaneously around the turning centerline of the first connecting unit and the turning centerline of the second connecting unit during turning over. The overdue mast in the overlifting device of the construction machine can be folded, which is convenient for transportation during the transfer operation.

Description

technical field [0001] The invention relates to the technical field of engineering equipment, in particular to a super-lifting device for engineering machinery and the engineering machinery. Background technique [0002] With the development of the hoisting industry, the market has a higher demand for large-tonnage cranes, requiring the cranes to have higher lifting heights and lifting loads, and super-lifting devices are also more widely used on cranes of all levels. Smaller tonnage cranes can be equipped with super-lifting devices from scratch, which can significantly improve the lifting performance, while existing larger-tonnage cranes with super-lifting configurations can only be equipped with super-lifting devices with larger cross-sectional dimensions and longer lengths. performance. The increase of the cross-sectional size of the super-lifting device can be done with the increase of the overall cross-sectional size of the entire boom system, while the increase of the...

AI Technical Summary

Problems solved by technology

The increase of the cross-sectional size of the super-lifting device can be done with the increase of the overall cross-sectional size of the entire boom system, while the increase of the length of the super-lifting device is limited by its own rigidity, stability and convenience of transportation after disassembly. smaller

In recent years, wind power and other industries have continuously demanded that super-large-tonnage cranes have increased hoisting capacity, increased booms, and further enhanced working conditions. Under the premise that super-large-tonnage super-lifting devices and the section increase of the entire boom system are limited, the demand for lengthening super-lifting devices has changed. It is more urgent, but the super-lifting device that is too long is inconvenient to transport during the disassembly process of the transfer operation

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