Mounting method of large ship stern-door transmission system

Abstract

The invention relates to an installation method for the stern door transmission system of a large ship. The stern door transmission system comprises a stern door, a stern ramp and the respective oil cylinders of the stern door and the stern ramp, wherein the stern door is installed at an upper deck at the stern part of a ship body, and the stern ramp is installed at a lower deck at the stern partof the ship body. The installation method comprises the following steps: (1), the basic states of the stern door and the stern ramp which are completed through manufacture are calculated, and slingers are welded; (2), a laser and a supporting device are placed; (3), the stern ramp is lifted by using a large-tonnage crane; (4), the stern door is lifted by using a small-tonnage crane; and (5), the stern door and the stern ramp are debugged. By using the installation method, the accurate fixation can be realized, a precedent is created for the installation of the stern door transmission system of the ship, the construction efficiency and the construction speed are greatly improved, and the installation method provides reference for the follow-up similar ships.

Description

technical field [0001] The present invention relates to ship construction, and in particular to the positioning and installation of a stern door transmission system on a ship. Background technique [0002] The stern door, broadside door and bow department on the ship constitute the channel transmission system of the ship and undertake the role of the ship's logistics channel. The passage system on the ship is generally composed of broadside door, stern door, bulkhead door and ramp plate. Vehicles enter the interior of the hull through the broadside door, and reach the upper vehicle garage through the ramp plate; and amphibious equipment out through the stern door. [0003] In the construction of existing ships, the stern door, broadside door and bow department are generally installed separately, but the situation that the stern door, broadside door, bulkhead door and ramp plate appear on the same ship has not yet been encountered. . The stern door transfer system of the a...

AI Technical Summary

Problems solved by technology

The location of the stern door transmission system is complex, located at the inclination of the stern, and it cannot be directly hoisted in place during hoisting; moreover, the weight and size of the stern springboard are very large, weighing about 58 tons, and the transverse span is nearly 20 meters, which leads to a small tonnage in the hoisting process. The crane cannot lift the weight, so a large-tonnage crane must be used. In addition, during the installation of the stern door transmission system, it is necessary to lift the stern ramp several times and hang it in the air for a long time, which increases the safety hazard

At the same time, the hoisting equipment will be occupied for a long time, which will affect the construction of other ships. How to quickly and safely set up the hoisting procedure has become an urgent problem to be solved in this project.

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