A kind of bow section hoisting method

Abstract

The invention discloses a hoisting method for ship bow sections. The ship bow sections comprise the left bow section and the right bow section. The hoisting method comprises the following steps that (1), the left bow section and the right bow section are oppositely arranged with long sides, two first suspension fittings are arranged on the outer plate surface, and two second suspension fittings are arranged at the top ends of different ribs on the short side; (2), a double-trolley bridge crane is used for double-hook hoisting; and (3), a first steel wire rope and a second steel wire rope are correspondingly hung on two hoisting hooks of the double-trolley bridge crane for hoisting and positioning; and the two ends of the first steel wire rope are correspondingly connected with the two first suspension fittings through unloading hooks, and the two ends of the second steel wire rope are correspondingly connected with the two second suspension fittings through unloading hooks. The methodis not limited by internal field equipment and field conditions, and the hoisting safety factor is high.

Description

technical field [0001] The invention relates to a section hoisting method for a bow of a ship. Background technique [0002] When large-scale shipyards construct the hull, they generally adopt the method of segmented manufacturing and berth closing, that is, according to the structural characteristics of the hull, the production conditions of the shipyard (including lifting capacity), and the ship construction process, the hull is divided into several sections, and the vehicle inspection or inspection is carried out first. Build separately on tire frames or platforms in other sites, and assemble small sections into large sections or total sections, and finally close up on the berth to form a complete hull. [0003] For the bow and stern general section whose weight or size exceeds the lifting capacity, the general section is usually divided into (3-6) semi-stereoscopic segments along the height, and these segments are large in size, complex in structure, and center of gravit...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, in the existing implementation plan, the left section of the bow and the right section of the bow are placed opposite to each other, and the hanging code is set on the section deck. Due to its special structure and weight limit, a 600-ton gantry crane is required. Three-point hoisting is carried out on equipment with the same level of lifting capacity, but there are still problems in operation as follows: 1) The tire frame in the placement method occupies a large area; The section of the gantry crane usually needs to cross the height of other sections, and the living sling is generally only 2.5 meters to 3.5 meters, and the distance between the No. 1 hook and the No. 2 hook of the 600-ton gantry crane is relatively large, about 14 meters. Such a large spacing cannot produce slings in the infield

If you consider using an infield crane, and the infield crane generally uses two hooks and two points for hoisting, it is more difficult to use an infield crane for a large bow with a biased center of gravity, and it is easy to lose balance and cause inclination

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