Reinforced combined boom

Abstract

The invention discloses a reinforced combined boom. Each boom section comprises four main chords, which are parallel axially, and a plurality of diagonal web members, which are connected between mainchords. Two ends of each main chord are both provided with a connection plate. Multiple boom sections are sequentially connected together through the connection plates. The size of the width of the cross section of one boom section is not smaller than the size of the height of the cross section. The lateral surfaces, which are both outwards arranged, of two main chords, which are neighbored in thewidth direction of the cross section of one boom section, are provided with a hinge point ear plate. When the lateral surfaces, which are provided with hinge point ear plates, of every two boom sections are opposite to each other, through a connection member, the hinge point ear plates are laminated, connected and assembled to form a reinforced boom with at least two layers; and the width size and height size of the cross section of the reinforced boom are not smaller than the width size and height size of the cross section of one boom section. The structure of the reinforced combined boom issimple, the bottlenecks of transportation size and transportation weight are broken, and the bearing capacity is multiplied.

Description

technical field [0001] The invention relates to an arm frame on a hoisting equipment, belonging to the technical field of hoisting equipment. Background technique [0002] In order to meet the hoisting demand for super-large equipment in domestic petroleum, petrochemical, nuclear power, ocean engineering, wind power, steel and other large-scale engineering projects, cranes are becoming more and more super-large, with higher lifting heights, larger working ranges, and greater lifting capacity. stronger. Super-large lifting equipment is a new type of crane, which has the advantages of large lifting capacity and lifting moment, and small grounding specific pressure, and is often used in occasions with large lifting capacity. With the rapid development of the international energy and chemical industry, there are more and more super-large construction projects. [0003] As the key load-bearing structural part of the lifting equipment, the boom system's structural form and its o...

AI Technical Summary

Problems solved by technology

[0006] 1. The cross-sectional size and material specifications of the boom system cannot be infinitely increased due to the transportation size and transportation weight restrictions; increasing the material increases the cost, and has higher requirements for the material itself, and the improvement of the material has a limited impact on the carrying capacity of the boom system;

[0007] 2. Composite main chord jib system, the structure of the jib section itself is complex, and the requirements for tooling and assembly points are high;

[0008] 3. The composite main chord jib system, the main chords are connected by welding, which has high requirements for welds, and the inspection of weld defects is more difficult, and there are certain safety hazards;

[0009] 4. The composite main chord jib system, the main chords are integrated as a whole. Due to the limitation of transportation weight, the number of main chords cannot be increased without limit, so the bearing capacity of the jib system itself is also improved. limited;

[0010] 5. The weight of the boom system itself will affect the lifting performance of the lifting equipment. In the composite main chord boom system, each main chord and web are welded as a whole, and its own weight cannot meet the actual hoisting requirements. and hoisting conditions, its own weight cannot achieve a good match with the performance of the whole machine, or even reduce the performance of the whole machine;

[0011] 6. Composite main chord jib system, each main chord and web are welded as a whole, its own bearing capacity cannot be adjusted according to the actual hoisting requirements and hoisting conditions, and its own bearing capacity cannot be compared with the actual hoisting weight To achieve a good match, there will be a large amount of waste;

[0012] 7. Composite main chord jib system, each main chord and web are welded as a whole, its own bearing capacity cannot be adjusted according to the actual hoisting requirements and hoisting conditions, and its own bearing capacity cannot be compared with the lifting equipment The overall performance requirements are well matched, and there will be a waste of a large margin in the bearing capacity of the boom system;

[0013] 8. Composite main chord jib system, each main chord and web are welded as a whole. Once the lifting equipment needs to be improved for performance improvement, it is difficult or even impossible to improve the jib system, making the jib system Does not match the performance of the whole machine, affecting the performance improvement of the whole machine system

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