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Hoisting method using three traveling cranes with unequal loads

A technology of unequal and heavy objects, applied in the field of mechanical hoisting, can solve the problems of high cost, large impact, difficulty of crawler crane or truck crane entering the construction site, etc.

Inactive Publication Date: 2013-03-20
MCC TIANGONG GROUP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is customary to use large-tonnage crawler cranes or truck cranes to hoist in place. This method is expensive and is greatly affected by the on-site operating environment, especially the lack of elevation in the factory building and the small space, which leads to crawler cranes or truck cranes entering the construction site. very difficult

Method used

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  • Hoisting method using three traveling cranes with unequal loads

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Embodiment Construction

[0015] As shown in the figure: During the construction process, three cranes are used to hoist large equipment into place. The specific technical solutions adopted are:

[0016] 1) Calculate the total load capacity of the three cranes before construction, and require that the weight of the heavy object 6 to be hoisted should not exceed the total load of the three cranes 1, 2, and 3. Then, according to the manufacturer's design instructions, calculate whether the force of the factory's column will be abnormal when the crane straddles three cranes and is in the hoisting area at the same time. After all the calculation results meet the design requirements, the heavy objects can be hoisted by three cranes.

[0017] 2) Determine the arrangement positions of the first main girder 4 and the second main girder 5 in sequence according to the lifting capacity of the three cranes. Comparing the lifting capacity of the two cranes on both sides, the one with the larger lifting capacity is...

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Abstract

The invention discloses a hoisting method using three traveling cranes with unequal loads. The three traveling cranes with unequal loads and two girders are taken as hoisting appliances, wherein the hoisting points at the lower ends of the first girder and the second girder are designed according to the rated loads of the traveling cranes and the weight of a hoisted heavy article, and the load percent borne by the three traveling cranes can be required maximumly, so that the safety of hoisting is ensured. Meanwhile, the construction cost is saved and the construction time is shortened.

Description

Technical field: [0001] The invention belongs to a mechanical hoisting method, in particular to a hoisting method of three cranes with unequal weights. The hoisting method is used for hoisting medium and heavy equipment in mining, metallurgy, electric power and other industries. Background technique: [0002] Under normal circumstances, heavy equipment such as the archway of the rolling mill and the upper and lower beams of the forging press are relatively heavy, far exceeding the total lifting capacity of any two cranes equipped in the workshop. It is customary to use large-tonnage crawler cranes or truck cranes to hoist in place. This method is expensive and is greatly affected by the on-site operating environment, especially the lack of elevation in the factory building and the small space, which leads to crawler cranes or truck cranes entering the construction site. very difficult. If there are three cranes in the span, the total hoisting load capacity can meet the requ...

Claims

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Application Information

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IPC IPC(8): B66C1/10B66C11/00B66C13/08
Inventor 贾海涛白凤军
Owner MCC TIANGONG GROUP
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