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Foldable derrick structure for a ship

A technology for towers and ships, applied in the field of foldable tower structures, can solve problems such as difficulty in lowering the tower height, difficulty in dismantling the tower, and deterioration of floating stability, so as to reduce the center of gravity, improve floating stability, reduce time and cost effect

Inactive Publication Date: 2013-09-18
DAEWOO SHIPBUILDING & MARINE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, in order for the ship to pass such a route, it is necessary to dismantle the tower with a complex structure, but it is actually difficult to dismantle the tower from the deck
In particular, for the part of the tower that is connected to the deck by welding, not only the tower cannot be disconnected from it, but even if the welded part can be disconnected from the tower, it is difficult to lower the height of the tower
Therefore, drillships bypass such routes, thus requiring additional time and cost to sail to their destinations
[0005] In addition, since the tower has a height of 100m or more, the drill ship has a high center of gravity (COG) due to the tower, resulting in deterioration of floating stability during ship navigation

Method used

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  • Foldable derrick structure for a ship
  • Foldable derrick structure for a ship
  • Foldable derrick structure for a ship

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Embodiment Construction

[0035] Exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the same reference numerals denote the same components throughout the specification and drawings.

[0036] Figures 1a to 1f show the sequential operation of folding the upper tower part of a foldable tower structure for a vessel according to one embodiment, and Figures 2a to 2f show the upper tower part to be folded according to this embodiment Sequential operation from erect to initial state.

[0037] Generally, a tower is a tower crane built on a ship, such as a drill floor of a drilling ship, so that all drilling equipment can be concentrated on the tower, and the tower is configured to raise or lower the drilling equipment, such as a drill pole etc.

[0038] Referring to Figure 1a, the tower according to this embodiment consists of two parts, an upper tower part 12 (12a, 12b) and a lower tower part 11, which are arran...

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Abstract

The present invention relates to a foldable derrick structure for a chip. The foldable derrick structure allows the chip to pass a shipping line with an above-water height limitation through folding the derrick thereby reducing time and cost in ship navigation. The derrick structure comprises the following components: a derrick which comprises an upper derrick component, a lower derrick component and a hinge coupler that couples the upper derrick component with the lower derrick component, while the upper derrick component is vertically divided into a first derrick component and a second derrick component; a first hydraulic cylinder which is set for the first derrick component; and a second hydraulic cylinder which is set for the second derrick component. The first derrick component and the second derrick component are driven by the first hydraulic cylinder and the second hydraulic cylinder for being rotated and folded relatively to the hinge coupler and the lower derrick component which is fixed to the ship and is supported by the ship.

Description

technical field [0001] The present disclosure relates to a collapsible tower structure for a ship, and more particularly, to a structure that allows a ship having a tower crane (eg, a drilling ship, etc.) to easily lower the ship by folding the tower crane. The height in turn passes through a collapsible tower structure for ships on routes with height restrictions over water. Background technique [0002] In general, a drill ship refers to a ship that explores marine resources such as oil, gas, etc. in deep sea by drilling the seabed, and includes a fixed platform type, a semi-submersible type, a drill ship type, and the like. These ships are equipped on their decks with fixed tower cranes having complex shapes and consisting of beams and various drilling rigs. The tower crane is also referred to simply as a "tower". [0003] The tower is a kind of tower crane, which is installed close to the moon pool setting of the drilling ship and includes all drilling equipment. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B27/10
CPCB63B27/04B66C23/605B66C23/68E21B15/02Y02T70/00
Inventor 李铢皓朴埈吾裴在流
Owner DAEWOO SHIPBUILDING & MARINE ENG CO LTD
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