KR-20260067400-A - DEVICE AND METHOD FOR MOVING HEAVY LOADS WITHIN DEAD SPACE OF A SHIP

KR20260067400AKR 20260067400 AKR20260067400 AKR 20260067400AKR-20260067400-A

Abstract

A device for moving heavy objects within a confined area of a ship is disclosed. The device for moving heavy objects within a confined area of a ship according to the present embodiment comprises: a loading section for loading a plurality of heavy objects; a moving section installed on a support provided at the bottom of the hull to support the vertical load of a liquefied gas storage tank and for moving the loading section; and a length adjustment section connecting the loading section and the moving section, wherein the length adjustment section may be provided to move the loading section by adjusting the length of the length adjustment section.

Inventors

박영덕

Assignees

삼성중공업 주식회사

Dates

Publication Date: 20260513
Application Date: 20241104

Claims (10)

In a device for moving heavy objects within a confined area of a ship for moving heavy objects in the space between the lower part of a liquefied gas storage tank and the hull of a ship, A loading section for loading multiple heavy objects; A moving part installed on a support provided at the lower part of the hull to support the vertical load of the liquefied gas storage tank and moving the loading part; and Connecting the above-mentioned loading unit and the above-mentioned moving unit, it includes a length adjustment unit whose length is adjustable, and The above-described moving part is a heavy-duty moving device within a narrow area of a ship that moves the loading part by adjusting the length of the above-described length adjustment part.
In paragraph 1, The above loading part A first loading section having a first height, and A second loading section having a second height and stacked and combined on the upper part of the first loading section, and A heavy object moving device within a narrow area of a ship, comprising a support member coupled to the lower part of the first loading section to move the loading section.
In paragraph 2, The first height is lower than the second height, and The above second height is formed to be lower than or equal to the above support height, and Each of the two ends of the second loading section includes a hole, and The above length adjustment part is a heavy object moving device within a narrow area of a ship connected to the above hole.
In paragraph 2, A heavy object moving device within a narrow area of a ship, comprising a first loading section and a second loading section, which include a fall prevention section to prevent the loaded heavy object from falling during movement.
In paragraph 1, The above moving part A driving unit that adjusts the length of the above-mentioned length adjustment unit, and A heavy object moving device within a narrow area of a ship, comprising a connecting portion on which a driving unit is installed, wherein both ends are fixed to the two supports adjacent to each other.
In paragraph 5, A heavy load moving device in a narrow area of a ship, wherein the two adjacent supports are the two supports located at the outermost positions in two adjacent rows among a plurality of supports arranged in a plurality of rows at the bottom of the hull.
In paragraph 5, The above driving unit A drum for unwinding or winding the above-mentioned length adjustment part, and A heavy object moving device within a confined area of a ship, comprising a motor unit for rotating the drum.
A method for moving a heavy object within a confined area of a ship for moving a heavy object in the space between the lower part of the ship's liquefied gas storage tank and the hull, a) A step of installing a moving part for moving the heavy object on a support provided at the lower part of the hull that supports the vertical load of the liquefied gas storage tank; b) a step of connecting the above-mentioned moving part to a loading part for loading the above-mentioned heavy object; c) a step of moving the loading unit into the space to load the heavy object; and d) A method for moving a heavy object within a narrow area of a ship, comprising the step of moving the loading unit by adjusting the length of a length adjustment unit connecting the moving unit and the loading unit.
In paragraph 8, Step a) above A connecting part is installed so that both ends are fixed to the two supports adjacent to each other, and A method for moving a heavy object within a narrow area of a ship, comprising the step of installing a driving unit that adjusts the length of the length adjustment unit in the connection part.
In paragraph 8, A first worker performs steps a), b), and d), and A method for moving a heavy object within a confined area of a vessel in which a second worker performs step c) above.

Description

Device and Method for Moving Heavy Loads Within Dead Space of a Ship The present invention relates to a device and method for moving heavy objects within a confined area of a ship, and more specifically, to a device and method for moving heavy objects within a confined area of a ship for facilitating the installation, dismantling, and various inspections of heavy objects such as hydraulic rams and pumps in the space between the lower part of a liquefied gas storage tank and the hull of a ship. With recent technological advancements, liquefied gases such as Liquefied Natural Gas (LNG) and Liquefied Petroleum Gas (LPG) are widely used to replace gasoline and diesel. Liquefied Natural Gas is produced by cooling and liquefying methane obtained by refining natural gas extracted from gas fields; it is a colorless, transparent liquid that is an excellent fuel due to its high calorific value and almost no pollutants. Liquefied Petroleum Gas is a fuel produced by compressing gases composed mainly of propane ( C₃H₅ ) and butane ( C₄H₁₀ ) , which are found along with petroleum in oil fields , into a liquid at room temperature. Such liquefied gases are stored in liquefied gas storage tanks installed on land or in liquefied gas storage tanks equipped on ships that are means of transport navigating the ocean. Liquefied natural gas is reduced to 1/600 of its volume upon liquefaction, and liquefied petroleum gas is reduced to 1/260 of the volume for propane and 1/230 of the volume for butane upon liquefaction, thus having the advantage of high storage efficiency. These liquefied gases are transported from production sites to various demand centers by carriers (e.g., LNG carriers, LPG carriers, etc.). At this time, liquefied gas carriers possess multiple liquefied gas storage tanks, and the liquefied gas can be stored in a low-temperature liquid state in these storage tanks. The liquefied gas storage tank is installed in the liquefied gas storage space formed inside the hull of the liquefied gas carrier, and if the liquefied gas storage tank is an independent tank, it is supported by the hull in the liquefied gas storage space by a load-bearing support structure. Accordingly, a space is formed between the lower part of the liquefied gas storage tank and the liquefied gas storage space, i.e., the hull. In such spaces, workers often have to perform tasks such as installing, dismantling, and inspecting heavy objects weighing more than 10 kg, such as hydraulic rams and pumps. However, since the height between the bottom of the liquefied gas storage tank and the hull is only about 800 mm, there is a problem that it is difficult for adult workers to move, as well as to move the aforementioned heavy objects. FIG. 1 is a drawing illustrating the structure of a heavy object moving device within a narrow area of a ship according to one embodiment of the present invention. FIG. 2 is a drawing for explaining the installation location of a loading unit according to an embodiment of the present invention. FIG. 3 is a drawing illustrating steps a) and b) of a method for moving a heavy object within a narrow area of a ship according to another embodiment of the present invention. FIG. 4 is a drawing illustrating steps c) and d) of a method for moving a heavy object within a narrow area of a ship according to another embodiment of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are presented to sufficiently convey the concept of the present invention to those skilled in the art to which the present invention pertains. The present invention is not limited to the embodiments presented herein and may be embodied in other forms. In order to clarify the present invention, the drawings may omit the illustration of parts unrelated to the description and may slightly exaggerate the size of components to aid understanding. FIG. 1 is a drawing illustrating the structure of a heavy object moving device within a narrow area of a ship according to one embodiment of the present invention. FIG. 2 is a drawing for explaining the installation location of a loading unit according to an embodiment of the present invention. Referring to FIG. 1, the heavy object moving device (10) in a narrow area of a ship according to the present invention is configured to move a heavy object in the space between the lower part of the liquefied gas storage tank of the ship and the hull, and is largely configured to include a loading section (100), a moving section (200), and a length adjustment section (300). The loading section (100) is configured to load a plurality of heavy objects and includes a first loading section (110), a second loading section (120), and a support section (130). The first loading section (110) is configured to have a plate shape having a first height and a certain area. At this time, it is preferable that the first height be formed suc