Lifting tool for vertical tank lifting of LNG ship

Abstract

The invention provides a lifting tool for vertical tank lifting of an LNG ship, and relates to the field of LNG ship construction. The lifting tool for vertical tank lifting of the LNG ship comprisesa frame body and a lifting assembly, wherein the bottom of the frame body is used for being fixedly connected with a ship body, the lifting assembly is arranged on the upper portion of the frame body,and the middle part of the frame body is provided with an accommodating space for the lifted vertical tank to enter; and a horizontal positioner is arranged at the top of the frame body, and the horizontal positioner is provided with a quasi-linear beam for positioning and matching with the top positioning point of the vertical tank. The lifting assembly is controlled to work, in the lifting process, whether a falling point of the quasi-linear beam is aligned with the top positioning point of the vertical tank is carried out in real time, if the falling point of the quasi-linear beam deviatesfrom the top positioning point of the vertical tank, the posture and the position of the vertical tank are corrected, the lifting vertical tank needs to be corrected, the posture of the vertical tankis corrected to achieve the purpose of vertically lifting or lowering the vertical tank, the lifting installation error is reduced, and the mounting precision of the vertical tank is ensured.

Description

technical field [0001] The invention relates to the technical field of LNG ship construction, in particular to a lifting tool for vertical tank lifting of an LNG ship. Background technique [0002] The LNG ship is a special ship dedicated to carrying liquefied natural gas. The liquefied natural gas is sealed in the storage tank on the ship. Due to the dangers of low temperature, high pressure, and explosion, the manufacturing standards and installation accuracy of the storage tank are strictly required. [0003] Installing the storage tank on the ship in an upright state is one of the installation forms. For example, the Chinese utility model patent with the authorized public number CN203731078U and the authorized announcement date of 2014.07.23 discloses a suspended marine LNG fuel tank, and specifically discloses the fuel The tank includes a tank body, a head, and a backing plate. The head includes a head I and a head II. The outside of the tank is covered with a polyureth...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the object of the present invention is to provide a lifting tool for lifting vertical tanks of LNG ships, so as to solve the problems of easy lifting errors and low installation accuracy of vertical tanks when using the gantry crane in the dock for hoisting operations

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