Special airbag for carrying heavy goods

Abstract

The invention relates to a special airbag for carrying heavy goods, and the airbag is a carrying tool for large-sized and overweight components. The invention aims at solving the technical problems ofchanging larger diameter and relatively lower air pressure of existing airbags, poor rigidity, burst caused by airbag distortion due to the effect of various uneven contact surfaces, uneven frictional force and the like, which leads to human casualty accidents. The special airbag for carrying heavy goods is characterized by being composed of an airbag body, an airbag head and airbag mouths distributed at both ends of the airbag head, and diameter of the airbag is 0.4-0.78m.

Description

technical field [0001] The invention relates to a special air bag for transporting heavy objects, which is a transport tool for large and overweight components. Background technique [0002] At present, the handling of large components, such as wharf caissons, power plant intake and drainage box culverts, underwater tunnel immersed pipes, drilling platforms, etc., many use the air bag handling method and have achieved good results, but the used in these projects The airbags follow the specifications of the airbags used in launching ships, and the diameter of the airbags is between 1m and 1.5m. The whole ship is equivalent to a thin-shell box with a large bottom area and a small weight per unit bottom area, generally less than 800kg / m 2 When the ship is launched, many low-pressure airbags are used to disperse the load and ensure that the hull is not damaged or deformed. At the same time, the influence of the ramp of the ship’s launching should also be considered, so the diam...

AI Technical Summary

Problems solved by technology

For components such as wharf caissons and concrete cubes, the weight per unit bottom area is large, and the load is concentrated, generally at 10,000kg / m 2 Left and right, there are not too many airbags placed under the component, the working pressure of the airbag is often above 0.2MPa, the airbag with a diameter of 1m is used, the lifting height of the bottom of the component should be about 0.4m, and it is very unstable to walk, especially the thin and tall type Some components, such as caissons, are as high as 27m, and the base area is less than 200m 2 , it is more difficult to walk

The large diameter of the airbag also brings many disadvantages such as heavy weight, inconvenient handling, high manufacturing cost, large inflation volume, and low work efficiency.

[0003] Existing airbags used to carry heavy objects are all made of rubberized cord fabric. Due to the influence of the rubberized process, the thickness of the outer rubber layer is less than 0.8mm, and no additional rubber layer is applied on the outer side, and it is vulcanized. The thickness of the final adhesive layer is uneven, the wear resistance is poor, and the service life is low

[0004] When the airbag transports components, when the lifting height is low, the walking traction is large, and when the lifting height is high, the walking stability is poor

[0005] Due to the large diameter of the existing airbag and the relatively low air pressure, the rigidity is poor. When the components are transported, due to the influence of factors such as uneven contact surfaces and uneven friction, the airbag will be distorted and burst, resulting in personal injury accident

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