KR101454390B1 - Apparatus for guiding canister - Google Patents

Apparatus for guiding canister Download PDF

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Publication number
KR101454390B1
KR101454390B1 KR1020130034367A KR20130034367A KR101454390B1 KR 101454390 B1 KR101454390 B1 KR 101454390B1 KR 1020130034367 A KR1020130034367 A KR 1020130034367A KR 20130034367 A KR20130034367 A KR 20130034367A KR 101454390 B1 KR101454390 B1 KR 101454390B1
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KR
South Korea
Prior art keywords
guide
rack supporter
rack
supporter
guide unit
Prior art date
Application number
KR1020130034367A
Other languages
Korean (ko)
Other versions
KR20140119359A (en
Inventor
양인호
박영덕
윤봉래
백정훈
허희영
이덕훈
Original Assignee
삼성중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1020130034367A priority Critical patent/KR101454390B1/en
Application filed by 삼성중공업 주식회사 filed Critical 삼성중공업 주식회사
Priority to US14/779,963 priority patent/US9834289B2/en
Priority to SG11201508130YA priority patent/SG11201508130YA/en
Priority to EP14774506.1A priority patent/EP2979972B1/en
Priority to CN201480018321.2A priority patent/CN105263799B/en
Priority to BR112015025007-6A priority patent/BR112015025007B1/en
Priority to PCT/KR2014/002687 priority patent/WO2014157999A1/en
Publication of KR20140119359A publication Critical patent/KR20140119359A/en
Application granted granted Critical
Publication of KR101454390B1 publication Critical patent/KR101454390B1/en
Priority to US15/456,474 priority patent/US9988131B2/en
Priority to US15/456,478 priority patent/US10300997B2/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • B63H2025/425—Propulsive elements, other than jets, substantially used for steering or dynamic anchoring only, with means for retracting, or otherwise moving to a rest position outside the water flow around the hull

Abstract

There is provided a guide device for a canister that guides the rack supporter of the canister during a transition between an operation mode and a maintenance mode.
The guide device of the canister includes an under guide unit mounted on a lower portion of the hull block opposed to the rack supporter and guiding the rack supporter in a downward direction of the hull block in an operating mode, An upper guide unit for guiding the rack supporter in the upward direction of the hull block in the maintenance mode, and a lower guide unit located opposite the rack supporter between the under guide unit and the under guide unit, As shown in FIG.

Description

[0001] APPARATUS FOR GUIDING CANISTER [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device for a canister, and more particularly, to a guide device for a canister which realizes the jacking device and guide structure of a canister on the same axis of a rack supporter, .

Generally, ships such as a drill ship are equipped with an azimuth thruster (hereinafter referred to as "thruster"), which is a type of propulsion device for self-propelled navigation.

Depending on the application, the thruster may have an open propeller (eg, a propeller) that does not have a duct, and may be fabricated in the form of a ducted propeller with a duct to maximize thrust during shutdown.

Particularly, in order to drill the drill ship, accurate positioning (dynamic positioning, DP) is necessary against the environmental loads such as wave-drift force, wind external force, and algae external force. Is required. To this end, a number of thrusters are attached to the bow and stern at the drill ship. The amount and direction of the thrust of each thruster are calculated corresponding to the position control algorithm of the ship.

The most widely used method of installing the thruster is the underwater installation method. For example, a thruster moved near a hull through a crane is connected to a cable of a crane and flows into the water. At this time, another cable connected to the hull is connected to the thruster, and the thruster is positioned. Thereafter, the thruster is constrained to the thruster position through the bolting operation.

Since the thrusters of the underwater installation method are located below the water surface, it is very difficult to directly replace them in the water when the thruster breaks down. Therefore, the thrusters can not be repaired by moving them to a dock on a very long distance. This results in a very large loss corresponding to the cost of using the drill rig during the travel / repair period. In order to solve the problem of the underwater installation method, a canister-type installation method has been proposed.

The canister is a kind of container containing various devices and the like necessary for driving the thruster. The canister is installed so as to be movable or fixed in the vertical direction inside the trunk of the ship, and a thruster can be attached to the bottom of the canister have.

Inside the trunk there is a clearance between the trunk and the canister, a work space for maintenance work, and an installation space for installing a jacking device (e.g., a jacking motor). A jacking system is attached to the side or upper part of the canister or the corresponding trunk. The jacking device may include a jacking motor, a rack, and a pinion to play the role of raising the canister in the vertical direction inside the trunk.

On the other hand, in order to maximize the propulsion efficiency, it is possible to move the canister in the vertical direction at the time of sailing, so that the thruster mounted under the canister can be positioned inside the hull, that is, inside the trunk. Thus, the thruster entering the interior of the trunk can be prevented from being used for navigation.

Such a thruster may have an operation mode and a maintenance mode. The operating mode allows the thrust to be placed outside the hull to be used for general position control, and the maintenance mode allows the thrusters to be lifted up to a certain height in the repair space and placed inside the hull for repair.

To raise and lower the canister, a rack and pinion gear connected to the jacking motor of the aforementioned jacking device is used. Here, the rack supporter including the rack gear is attached to the canister, and the pinion gear meshed with the rack gear is installed on the side of the hull. A separate sliding rail is provided on the vertical side of the canister to which the rack supporter is attached.

However, in the case of this conventional technique, since the jacking device and the sliding rail configuration are operated separately, the guide structure of the sliding rail must be manufactured within a manufacturing tolerance obtained by a back lash between the pinion gear and the rack gear of the jacking device Smooth operation of the canister can be ensured. Accordingly, in order to manufacture a guide structure for lifting and lowering the canister in the past, a technique for controlling excessive welding deformation along with precision machining has been demanded.

Open Patent Publication No. 10-2012-0008176 (Jan. 30, 2012)

Embodiments of the present invention are intended to provide a guide device for a canister in which a jacking device and a guide structure are mounted on a shaft of a rack supporter to eliminate the difficulty of manufacture and to raise and lower the canister smoothly.

According to an aspect of the present invention, there is provided a guide device for a canister that guides a rack supporter of a canister when converting between an operating mode and a maintenance mode, the guide device being mounted on a lower portion of a hull block, which is opposed to the rack supporter, An under-guide unit for guiding the hull block downward; An upper guide unit mounted on an upper portion of a hull block opposed to the rack supporter and guiding the rack supporter in an upward direction of the hull block in the maintenance mode; And a jacking unit positioned between the under-guide unit and the under-guide unit so as to face the rack supporter and moving the rack supporter upward or downward according to the type of the mode.

At this time, the under-guide unit and the upper guide unit include a guide bracket mounted on the hull block; A front guide pad provided on the guide bracket so as to face a front portion of the rack supporter; And a side guide pad provided on the guide bracket so as to be opposed to both side portions of the rack supporter.

In addition, the jacking unit may include a jacking guide pad positioned to face the front of the rack supporter; And a pinion gear which is positioned opposite to both side portions of the rack supporter and meshes with the rack gear of the rack supporter.

The rack supporter may be guided by the under guiding unit and the jacking unit upon switching to the operating mode, and guided by the upper guide unit and the jacking unit upon switching to the maintenance mode.

In addition, the maximum distance A between the upper guide unit and the under-guide unit may be at least shorter than the maximum length B of the rack supporter.

The apparatus may further include a middle guide unit disposed on the same axis between the jacking unit and the under-guide unit.

In addition, the guide bracket may include a support frame fixed to the hull block, a front frame mounted to the support frame so as to face the front portion of the rack supporter, the front frame having the front guide pad attached thereto; And a side frame vertically protruding from both sides of the support frame so as to be opposed to both sides of the rack supporter and having the side guide pad attached thereto.

In addition, a tapered surface for guiding the initial entry of the rack supporter may be formed on the top and bottom of the front guide pad and the side guide pad.

A leveling pad for fine tolerance adjustment can be selectively interposed between the front guide pad and the front frame or between the side guide pad and the side frame.

The tapered surface may include a first tapered surface inclined at an entrance of the rack supporter and a second tapered surface continuously inclined to the first tapered surface to have a smaller gradient than the first tapered surface The guide device of the canister.

Embodiments of the present invention have the advantage that jacking and guiding of the canister on the same axis as the rack supporter can reduce the manufacturing cost and work productivity compared to the case where the jacking and guide of the canister are implemented at different positions have.

Further, the embodiments of the present invention have an advantage in that manufacturing tolerances between the rack supporter and the guide unit can be finely adjusted by selectively using the leveling pads.

In addition, the embodiments of the present invention are advantageous in that the canister can be smoothly adhered by forming a tapered surface on the upper and lower sides of the front guide pad and the side guide pad.

1 is a plan view showing a guide device of a canister according to an embodiment of the present invention.
2 is a state diagram showing a guide device of a canister according to an embodiment of the present invention in an operation mode.
3 is a state diagram illustrating a guide device of a canister according to an embodiment of the present invention in a maintenance mode.
4 is a state diagram illustrating a guide device of a canister according to an embodiment of the present invention when switching between an operation mode and a maintenance mode.
5 is a state diagram showing a guide device of a canister according to a modification of the embodiment.
6 is a perspective view illustrating a guide unit of a guide device of a canister according to an embodiment of the present invention.
7 is a view showing a tapered surface of a guide device according to an embodiment of the present invention.
8 is a configuration diagram showing a tapered surface of a guide device according to a modification of this embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a plan view showing a guide device of a canister according to an embodiment of the present invention, FIG. 2 is a state diagram showing a guide device of a canister according to an embodiment of the present invention in an operation mode, FIG. 4 is a state diagram showing a guide device of a canister according to an embodiment of the present invention when switching between an operation mode and a maintenance mode. FIG. 4 is a state diagram showing a guide device of a canister according to an embodiment of the present invention.

1 to 4, a guide device for a canister according to an embodiment of the present invention includes a plurality of guide units 100 and a jacking unit 200. The rack supporter 310 of the canister 300 is disposed The canister 300 can be smoothly raised and lowered. Here, the plurality of guide units 100 may include an under-guide unit 100b and an upper guide unit 100a.

More specifically, the under-guide unit 100b is arranged so as to be opposed to the lower portion of the hull block 400, the movement path on which the rack supporter 310 is moved in the operation mode of the canister 300, So that the supporter 310 can be guided downwardly of the hull block 400.

The under-guide unit 100b may be disposed so as to correspond to a pair of rack supporters 310 located on both sides of the canister 300, have.

The upper guide unit 100a is arranged to face the upper portion of the hull block 400 and more specifically the movement path on which the rack supporter 310 is moved in the maintenance mode of the canister 300, The hull block 400 can be guided upward.

The upper guide unit 100a may be configured to have a guide structure of a " C "shape that entirely covers the rack supporter 310 like the under guide unit 100b, And the rack supporter 310 of the first embodiment.

The upper guide unit 100a may include a guide bracket 130, a front guide pad 110, and a side guide pad 120. Here, the guide bracket 130, the front guide pad 110, and the side guide pads 120 are formed on the guide bracket 130, the front guide pad 110, and the side guide pads 110, which are applied to the above- 120, description of the previously described configuration and operation may be omitted, and similar reference numerals may be given to similar configurations.

However, the upper guide unit 100a is positioned below the hull block 400, unlike the under guide unit 100b. The tapered surfaces 101 formed on the upper and lower surfaces of the front guide pad 110 and the side guide pad 120 are formed into a tapered surface 101 extending in the lower portion of the front guide pad 110 and the side guide pad 120, So that an easy movement of the supporter 310 can be realized.

The maximum distance A between the upper guide unit 100a and the under guide unit 100b can be designed to be at least shorter than the maximum length B of the rack supporter 310. [ The rack supporter 310 can be stably supported by the jacking unit 200 and the under guide unit 100b or by the jacking unit 200 and the upper guide unit 100a Can be moved.

The jacking unit 200 can provide the rack supporter 310 with the driving force corresponding to the operating mode or the maintenance mode to move the rack supporter 310 up and down the hull block 400, So that the movement of the rack supporter 310 can be guided.

The jacking unit 200 includes a jacking guide pad 210 positioned opposite to a front portion of the rack supporter 310 to maintain a constant gap with the rack supporter 310, A pinion gear 220 which is positioned opposite to the rack gear 311 of the rack supporter 310 and engages with the rack gear 311 and a jacking motor (not shown) which is drivably connected to the pinion gear 220, . ≪ / RTI >

2, when the pinion gear 220 is rotated in one direction by the operation of the jacking motor, the rack gear 311 of the rack supporter 310 is inserted into the pinion gear 220 to be rotated, The canister 300 can be moved downwardly of the hull block 400. In this case, At this time, since the under-guide unit 100b guides downward movement of the canister 300 in the advancing direction of the canister 300, the canister 300 is stably supported by the jacking unit 200 and the under-guide unit 100b Can be supported.

3, when the pinion gear 220 is rotated in the other direction by the operation of the jacking motor when the maintenance mode is switched, the rack gear of the rack supporter 310 311, the canister 300 can be moved upwardly of the hull block 400. At this time, the upper guide unit 100a guides upward movement of the canister 300, so that the canister 300 can be stably supported by the jacking unit 200 and the upper guide unit 100a.

4, when the operation mode is switched to the maintenance mode or the maintenance mode is switched to the operation mode, the canister 300 includes the under guide unit 100b, the jacking unit 200, It can be stably supported by the unit 100a, that is, by being converted into a three-point supporting form.

When the canister 300 is supported by the jacking unit 200 and the under-guide unit 100b and the maintenance mode is switched according to the present embodiment, when the operation mode is switched according to the present embodiment, The canister 300 is supported by the jacking unit 200 and a plurality of guides (not shown) are supported by the upper guide unit 100a and the upper guide unit 100a, May be supported by the unit.

5 is a state diagram showing a guide device of a canister according to a modification of the embodiment.

As shown in FIG. 5, the guide unit 100 may further include a middle guide unit 100c.

The middle guide unit 100c is disposed on the same axis between the jacking unit 200 and the under guide unit 100b and is capable of guiding the rack supporter 310 in the upward and downward directions of the hull block 400. [

FIG. 6 is a perspective view showing a guide unit of a guide device of a canister according to an embodiment of the present invention, and FIG. 7 is a diagram showing a tapered surface of a guide device according to an embodiment of the present invention.

6, the guide unit 100 includes a guide bracket 130 fixedly installed on a lower portion of the hull block 400, and a guide bracket 130 extending from a front portion of the rack supporter 310 to a predetermined gap. The front bracket 130 provided on the guide bracket 130 so as to be opposed to the rack gear 311 of the rack supporter 310 on both sides of the rack supporter 310, And may include a guide pad 120. Here, the guide bracket 130 may include a support frame 131, a front frame 132, and a side frame 133.

For example, the support frame 131 is a frame to be mounted on the lower part of the hull block 400. The support frame 131 is provided with a front frame 132 opposed to the rack supporter 310, A side frame 133 that is arranged to be installed can be provided. The front frame 132 is installed on the support frame 131 so as to be opposed to the front portion of the rack supporter 310 and has a front guide pad 110 for maintaining a predetermined gap with the front portion of the rack supporter 310 . The side frames 133 protrude vertically from both sides of the support frame 131 and are opposed to opposite sides of the rack supporter 310. Rack gears 311 of the rack supporter 310 And a side guide pad 120 for maintaining a constant gap.

A leveling pad 140 may be selectively interposed between the front guide pad 110 and the front frame 132 or between the side guide pad 120 and the side frame 133. [ The leveling pad 140 is a spacing pad having a predetermined thickness and includes a leveling pad 140 provided between the front guide pad 110 and the front frame 132 or between the side guide pad 120 and the side frame 133, The micro-tolerance between the under-guide unit 100b and the rack supporter 310 can be adjusted.

A tapered surface 101 may be formed on the upper and lower surfaces of the front guide pad 110 and the side guide pad 120. The tapered surface 101 forms an inclined surface for smoothly inserting the canister 300 so that the tapered surface 101 can be easily guided to the upper portions of the front guide pads 110 and the lateral guide pads 120 Movement can be implemented.

7, the tapered surface 101 includes a first tapered surface 101a formed to be inclined at the entrance portion into which the rack supporter 310 enters, and a second tapered surface 101b inclined to the first tapered surface 101a. And a second tapered surface 101b formed to have a smaller gradient than the first tapered surface 101a.

Thus, when the rack supporter 310 enters the under-guide unit 100b or the jacking unit 200, the rack supporter 310 can securely and smoothly enter the under-guide unit 100b or the jacking unit 200 It is possible.

In the present embodiment, the first tapered surface 101a is formed to be inclined at a 1/4 gradient, and the second tapered surface 101b is formed to be inclined at a 1/10 gradient. However, the present invention is not limited to this, 101b are designed to have a smaller gradient than the first tapered surface 101a.

8 is a configuration diagram showing a tapered surface of a guide device according to a modification of this embodiment.

8, the lateral guide pad 120 of the guide unit 100 includes an entry pad portion 120a having a tapered surface 101 and a guide pad portion 120a bent and connected to the entry pad portion 120a. (120b).

As described above, according to the present invention, the jacking and guide of the canister can be implemented on the same axis as the rack supporter, the manufacturing cost can be reduced and the work productivity can be improved compared with the case where the jacking and guide of the canister are implemented at different positions And the leveling pad can be selectively used to finely control the manufacturing tolerance between the rack supporter and the guide unit and a tapered surface is formed on the upper and lower sides of the front guide pad and the side guide pad, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Skilled artisans may implement a pattern of features that are not described in a combinatorial and / or permutational manner with the disclosed embodiments, but this is not to depart from the scope of the present invention. It will be apparent to those skilled in the art that various changes and modifications may be readily made without departing from the spirit and scope of the invention as defined by the appended claims.

100a: Upper guide unit 100b: Under guide unit
110: front guide pad 120: lateral guide pad
130: guide bracket 131: support frame
132: front frame 133: side frame
140: Leveling pad 200: Jacking unit
210: a jacking guide pad 220: a pinion gear
300: Canister 310: Rack supporter
311: Rack gear 400: Hull block

Claims (10)

A guide device for a canister that guides a rack supporter of a canister during a transition between an operation mode and a maintenance mode,
An under-guide unit mounted on a lower portion of a hull block opposed to the rack supporter and guiding the rack supporter in a downward direction of the hull block in the operating mode;
An upper guide unit mounted on an upper portion of a hull block opposed to the rack supporter and guiding the rack supporter in an upward direction of the hull block in the maintenance mode; And
And a jacking unit positioned between the under-guide unit and the under-guide unit so as to face the rack supporter and moving the rack supporter upward or downward according to the type of the mode,
The under-guide unit and the upper guide unit may include:
A guide bracket mounted on the hull block;
A front guide pad provided on the guide bracket so as to face a front portion of the rack supporter; And
And a side guide pad provided on the guide bracket so as to be opposed to both sides of the rack supporter. delete The method according to claim 1,
The jacking unit
A jacking guide pad located opposite to a front portion of the rack supporter; And
And a pinion gear which is positioned opposite to both side portions of the rack supporter and engages with the rack gear of the rack supporter. A guide device for a canister that guides a rack supporter of a canister during a transition between an operation mode and a maintenance mode,
An under-guide unit mounted on a lower portion of a hull block opposed to the rack supporter and guiding the rack supporter in a downward direction of the hull block in the operating mode;
An upper guide unit mounted on an upper portion of a hull block opposed to the rack supporter and guiding the rack supporter in an upward direction of the hull block in the maintenance mode; And
And a jacking unit positioned between the under-guide unit and the under-guide unit so as to face the rack supporter and moving the rack supporter upward or downward according to the type of the mode,
The rack supporter
Guided by the under guiding unit and the jacking unit upon switching to the operating mode, and guided by the upper guide unit and the jacking unit upon switching to the maintenance mode. A guide device for a canister that guides a rack supporter of a canister during a transition between an operation mode and a maintenance mode,
An under-guide unit mounted on a lower portion of a hull block opposed to the rack supporter and guiding the rack supporter in a downward direction of the hull block in the operating mode;
An upper guide unit mounted on an upper portion of a hull block opposed to the rack supporter and guiding the rack supporter in an upward direction of the hull block in the maintenance mode; And
And a jacking unit positioned between the under-guide unit and the under-guide unit so as to face the rack supporter and moving the rack supporter upward or downward according to the type of the mode,
Wherein a maximum distance (A) between the upper guide unit and the under-guide unit is at least shorter than a maximum length (B) of the rack supporter. The method according to claim 1,
Further comprising a middle guide unit disposed on the same axis between the jacking unit and the under-guide unit. The method according to claim 1,
The guide bracket
A support frame fixed to the hull block;
A front frame mounted to the support frame so as to face a front portion of the rack supporter and to which the front guide pad is attached; And
And a side frame vertically protruding from opposite sides of the support frame so as to form opposite pairs of opposite sides of the rack supporter and having the side guide pads attached thereto. The method according to claim 1,
Wherein a tapered surface for guiding an initial entry of the rack supporter is formed on upper and lower portions of the front guide pad and the side guide pad. 8. The method of claim 7,
Wherein a leveling pad for fine tolerance adjustment is selectively interposed between the front guide pad and the front frame or between the lateral guide pad and the side frame. 9. The method of claim 8,
The tapered surface
A first tapered surface inclined to an entrance of the rack supporter and a second tapered surface inclined continuously to the first tapered surface to have a smaller gradient than the first tapered surface.
KR1020130034367A 2013-03-29 2013-03-29 Apparatus for guiding canister KR101454390B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
KR1020130034367A KR101454390B1 (en) 2013-03-29 2013-03-29 Apparatus for guiding canister
SG11201508130YA SG11201508130YA (en) 2013-03-29 2014-03-28 Canister type thrustor and installation method thereof
EP14774506.1A EP2979972B1 (en) 2013-03-29 2014-03-28 Canister type thruster and installation method thereof
CN201480018321.2A CN105263799B (en) 2013-03-29 2014-03-28 Pot type propeller and its method to set up
US14/779,963 US9834289B2 (en) 2013-03-29 2014-03-28 Canister type thruster and installation method thereof
BR112015025007-6A BR112015025007B1 (en) 2013-03-29 2014-03-28 BOX TYPE IMPELER MOUNTED IN A COMPARTMENT OF A SHIP.
PCT/KR2014/002687 WO2014157999A1 (en) 2013-03-29 2014-03-28 Canister type thrustor and installation method thereof
US15/456,474 US9988131B2 (en) 2013-03-29 2017-03-10 Canister type thruster and installation method thereof
US15/456,478 US10300997B2 (en) 2013-03-29 2017-03-10 Canister type thruster and installation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130034367A KR101454390B1 (en) 2013-03-29 2013-03-29 Apparatus for guiding canister

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Publication Number Publication Date
KR20140119359A KR20140119359A (en) 2014-10-10
KR101454390B1 true KR101454390B1 (en) 2014-10-24

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100074397A (en) * 2008-12-24 2010-07-02 현대중공업 주식회사 Drillship thruster guiding system
KR20110054659A (en) * 2009-11-18 2011-05-25 (주)신화마린 A telescoping pier for facilities with buoyancy function
KR20110139545A (en) * 2010-06-23 2011-12-29 현대중공업 주식회사 Canister of drillship having rack gear and sliding rail structure
KR20110139563A (en) * 2010-06-23 2011-12-29 현대중공업 주식회사 Guide device for loading of canister

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100074397A (en) * 2008-12-24 2010-07-02 현대중공업 주식회사 Drillship thruster guiding system
KR20110054659A (en) * 2009-11-18 2011-05-25 (주)신화마린 A telescoping pier for facilities with buoyancy function
KR20110139545A (en) * 2010-06-23 2011-12-29 현대중공업 주식회사 Canister of drillship having rack gear and sliding rail structure
KR20110139563A (en) * 2010-06-23 2011-12-29 현대중공업 주식회사 Guide device for loading of canister

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