Superlift device of engineering machine and engineering machine

Abstract

The invention relates to the technical field of engineering equipment, in particular to a superlift device of an engineering machine and the engineering machine. The superlift device comprises a superlift mast, a first connecting unit and a second connecting unit, wherein the superlift mast is hinged to an arm support device of the engineering machine, the superlift mast comprises a front mast body and a middle mast body, the front mast body has an unfolding position and a folding position,the front mast body and the middle mast body are arranged to be connected through the first connecting unit when the superlift mast is unfolded and connected through the second connecting unit when the superlift mast is folded, the first connecting unit and the second connecting unit are both arranged toenable the superlift mast to switch between a fixed state and a pivoting state, and the front mast body has a position capable of overturning around the overturning center line of the first connecting unit and the overturning center line of the second connecting unit at the same time in the overturning process. The superlift mast in the superlift device of the engineering machine can be folded, so that transport is facilitated in the transition operation process.

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

Images