Hoisting method

Abstract

The invention relates to a lifting method which is characterized in the following steps: a) the lifting points of two sliding tail cranes are arranged under the centre of gravity of the equipment lifted and the lifting point of at least one main crane is arranged above the centre of gravity of the equipment lifted; b) the main crane is driven forward or turned to allow the equipment to become erective gradually from horizontal state and the reverse sliding tail of the equipment lifted is completed; c) two sliding tail cranes and at least one main crane are used to lift the equipment lifted in place simultaneously after the equipment lifted is completely erective. The lifting capacity of the lifting method provided by the invention is the sum of the lifting capacity of the main crane and the sliding tail crane; thus the lifting capacity of the method can be greatly increased without increasing the crane.

Description

technical field [0001] The invention relates to the field of equipment hoisting, in particular to a hoisting method for hoisting large equipment by using a self-propelled crane. Background technique [0002] For the hoisting of some large-scale equipment, the hoisting and moving method is generally used at home and abroad at present, which requires the use of multiple self-propelled cranes (hereinafter referred to as cranes), which are usually divided into main cranes and tail cranes. The lifting point of the main crane is set above the center of gravity of the equipment, and the lifting point of the tail crane is set below the center of gravity of the equipment. When hoisting, the tail-sliding crane moves forward or turns, and the main crane lifts the hook or rotates at the same time, so that the equipment gradually stands upright from the horizontal state; after the equipment reaches the upright state, evacuate the tail-sliding crane, at this time the main crane bears all ...

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of the domestic economy, the weight of equipment hoisting continues to increase. The general crane lifting and moving method can no longer meet the hoisting requirements of some large equipment. The alternative method is to use other hoisting equipment such as masts, portal hydraulic hoisting systems, etc. for hoisting

This kind of hoisting method has a complicated hoisting process, and it takes about one month to prepare the hoisting equipment. Some hoisting cannot be completed on the same day, and the hoisting risk is relatively large, and it cannot meet the requirements of a short installation period.

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