KR101346233B1 - Floating structure - Google Patents

Abstract

A floating structure is disclosed. The floating structure prepared by the present invention comprises a main body which includes a leg well; a leg which penetrates the leg well and has a cord and a rack gear; a case installing unit which is placed to correspond to the cord and the rack gear of the leg along the inner wall of the leg well; and a jack case which has a jacking unit that performs the vertical motion of the leg, and is installed in the leg well.

Description

{FLOATING STRUCTURE}

The present invention relates to a floating structure.

As the demand for environmentally friendly energy development grows, the development using wind power generators is getting popular all over the world. However, installation of wind turbines requires strict environmental conditions. For example, the place where the wind turbine is installed should be a place where a certain level of wind speed can be guaranteed to obtain significant rotation of the blade, and the pollution caused by the noise generated when driving the wind turbine should not be an issue do. Even if these environmental conditions are satisfied, a very large area of space may be required to install the wind turbine generator.

In recent years, interest in offshore wind turbines has increased, which is relatively free from the above-mentioned constraints. Offshore wind turbines can be installed in a variety of ways, but generally they are constructed by dividing the components into several units, making them on land, and then transferring the units to sea for assembly.

A ship that moves offshore wind turbine units on the sea to the sea and installs offshore wind turbine generators is commonly referred to as a wind turbine installation vessel (WTIV).

Wind turbine installation The ship can be operated in the transit mode and the jack-up mode due to the nature of the operation. Specifically, the ship installed with the wind turbine moves to the navigation mode to the position where the off-axis wind turbine is to be installed. In navigation mode, the legs may remain moved upward of the body to reduce resistance by seawater. After that, the ship installed with the wind power generator is switched to the jack-up mode, the leg is lowered into the sea floor, and then the main body is lifted up along the leg so that the main body is separated from the sea level by a certain distance. When the main body reaches a certain position, the wind turbine installation ship stops the movement of the main body and installs the offshore wind turbine generator. When the installation is completed, proceed in the reverse order to move to the next installation position.

In the floating structure, as the leg support or jack case which drives and supports the leg is protruded to the upper part of the main deck of the hull or the main body of the floating structure, in loading or loading the load according to the function of the floating structure, The area utilization of the main deck may be relatively low.

For example, if the floating structure is a ship or an offshore structure in which an offshore wind generator is installed, a leg in which a loading space for a plurality of blades, nacelle, towers, and other loads corresponding to parts of the offshore wind generator is set up above the main deck. It may be restricted by a support part or the like.

In addition, when simply attempting to place the jack case inside the floating structure, it is difficult to install the jack case in the inner structure of the floating structure, the problem of watertightness of the jacking unit, a large number of including the motor and pinion gear inside the jack case There is a need for a solution to the installation and maintenance of the jacking unit.

US Patent Publication No. US2010_0293781

The present embodiment is to provide a floating structure that is installed inside the main body so that the independent installation jack case having a plurality of jacking unit integrally does not protrude to the outside of the main deck of the floating structure.

According to an aspect of the present invention, there is provided a lithographic apparatus comprising: a body including a leg well; A leg passing through the leg well and having a cord and a rack gear; A case installation part disposed corresponding to the cord and the rack gear of the leg along the inner wall of the legwell; And a jacking unit configured to move the leg in a vertical direction, and a floating structure including a jack case installed in the case installation unit may be provided.

In addition, the jack case may be located in the case installation portion so as not to protrude onto the main deck of the main body.

In addition, the jack case may include a casing in which the jacking unit is located.

The casing may further include: a bottom plate having a passage groove for passing the cord of the leg and the ends of the rack gear and the brace in a vertical direction; Both side plates protruding from both sides of the bottom plate; An upper plate connecting the upper end portions of both side plates to each other and having the same passage groove as the passage groove of the bottom plate; A pair of front plates connected to the front end portions of the side plates, the bottom plate and the top plate, and spaced apart from each other such that the cord of the leg and the ends of the rack gear and the brace can be inserted; A back plate coupled to the both side plates, the bottom plate, and a rear end of the top plate so as to be disassembled and assembled; A diaphragm spaced parallel to the front plate and connected between the two side plates, the diaphragm having an installation hole the same size as that of the unit housing of the jacking unit for fitting the jacking unit; And it may include a closing plate connected between the diaphragm and the front plate around the installation hole.

In addition, the jacking unit, the bearing block is installed on the front plate; A pinion shaft rotatably coupled to the bearing block; A pinion gear coupled to the pinion shaft toward the rear side of the bearing block; A seal coupled to the pinion shaft toward the rear of the pinion gear; A unit housing in which the sealing is coupled to the front face of the housing, and the edge of the housing front is coupled to the mounting hole of the diaphragm; A gear box installed in the unit housing and transmitting power to the pinion shaft; And a motor connected to the gearbox to operate the gearbox.

In addition, the case installation unit may include one or more maintenance passages for access to the jack case.

In addition, it may further include a lifting lug coupled to the upper portion of the casing.

According to the embodiment of the present invention, since the jack case is installed inside the main body of the main body of the floating structure inside the leg well, it is possible to increase the shipping space for the load to be loaded on the main body, There is an advantage that the space utilization of the deck can be increased.

In addition, the present embodiment can be attached to the lifting lug attached to the stand-alone jack case having a plurality of jacking units, it can be easily assembled between the main body and the jack case of the floating structure.

In addition, the present embodiment can lower the center of gravity of the main body, thereby increasing the motion performance of the main body.

1 is a perspective view of a floating structure according to an embodiment of the present invention;
2 is a front view of the jack case shown in FIG.
3 is a cross-sectional view taken along the line AA shown in Fig.
4 is a perspective view for explaining the installation method of the jack case shown in FIG.

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.

In addition, the body means a hull or the like of a floating structure, and may be abbreviated as a main body hereinafter.

In the description of the present embodiment, the vertical direction may refer to the vertical direction from the bottom surface of the main body of the floating structure to the main deck, and the horizontal direction may be a direction orthogonal to the vertical direction of the main body, . ≪ / RTI >

1 is a perspective view of a floating structure according to an embodiment of the present invention.

1, the floating structure 1 includes a main body 10 capable of floating in water, legs 20 penetrating the leg well 50 of the main body 10 in the vertical direction, And a built-in jack case 100 for providing a lifting force for relatively moving the leg 20 and the main body 10 in the vertical direction.

The floating structure 1 may be a wind turbine installation vessel (WTIV) or a jack-up platform. In this embodiment, the floating structure 1 is a wind turbine installation vessel I'll explain it to you. However, the spirit of the present invention is not limited to this, and any floating structure 1 having a jack-up mode to be described later may be included in the scope of the present invention.

The body 10 may have a planar structure of a floating rectangular shape as shown in FIG. 1, and may be formed in a structure having a wide width, a low height, and a short length as compared with a general commercial line (for example, a container line) . However, this is merely an example, and the body 10 according to the teachings of the present invention may have any three-dimensional structure capable of providing a plurality of jack cases 100 in the body 10.

The main body 10 can be loaded with the load 2 and the loading unit 12 according to the function of the floating structure 1. [ In the case of this embodiment, the main body 10 can be loaded with the blade 2, the nacelle, the tower, or the like, which is a part of the offshore wind power generator, as the load 2.

In addition, the main body 10 may be provided with a propulsion device (not shown) for movement and position control.

A plurality of legs 20 may be provided depending on the purpose of use of the floating structure 1. In the embodiment of the present invention, a total of four legs 20 are provided, one pair at each of the port and starboard sides of the main body 10 I will explain what is provided as an example.

The leg 20 is installed to penetrate the body 10 in the vertical direction and the body 10 is formed with a leg well 50 through which the leg 20 passes. The legs 20 can be moved downwardly of the main body 10 and fixed to the seabed so that they are rigid enough to withstand the load of the main body 10 in a jack-up state, Structure and the like. In the present embodiment, the legs 20 are formed in a triangular truss structure.

The jack case 100 is installed in a triangular array along the inner wall of the leg well 50 through which the leg 20 passes and is provided with legs 20, 20 to be supported by the legs 20.

The main body 10 may be provided with a crane 40 capable of installing the offshore wind power generator by transporting the load 2 such as a blade, a nacelle, or a tower.

The jack case 100 may be a driving device for moving up and down the legs 20 or for moving the main body 10 up and down by relative movement with the legs 20. [ The operation of the jack case 100 causes the body 20 to move in a direction perpendicular to the body 10 or after the leg 20 is secured to the seabed, That is, can be moved up and down. For example, a jacking unit having a pinion gear and a motor is coupled to the jack case 100, and a rack gear is formed on both sides of a cord as a pillar member of the legs 20, The relative movement of the leg 20 and the body 10 in the vertical direction can be achieved.

The floating structure 1 having the above configuration can be operated in a transit mode and a jack-up mode.

FIG. 2 is a front view of the jack case shown in FIG. 1, FIG. 3 is a cross-sectional view taken along the line AA shown in FIG. 2, and FIG. 4 is a perspective view for explaining a method of installing the jack case shown in FIG. 2. .

Referring to FIG. 2, the jack case 100 is assembled to be modularized individually when the main body 10 is manufactured, and then to be coupled to the inside of the main body 10 of the floating structure as an independent installation form.

The jack case 100 may include a casing 120 in which the jacking unit 110 is located.

Here, the jacking unit 110 may have a motor, a pinion gear and a gearbox.

In addition, the jacking unit 110 may be embedded in the jack case 100 in a plurality along the horizontal and vertical directions of the jack case 100.

Meanwhile, the present embodiment may further include a lifting lug 130 coupled to the upper portion of the casing 120.

In addition, the lifting lug 130 may be cut and separated after the jack case 100 is installed in the case installation unit 55, or may be present in the upper portion of the casing 120 as it is, considering maintenance.

In addition, although the lifting lug 130 is formed in a protruding shape, a groove (not shown) may be formed in the upper plate 124 of the casing 120, and the lifting lug 130 may be located inside the groove.

As such, the lifting lug 130 may be configured to be protruding or recessed according to its shape or type, and thus may not be limited to the shape shown in FIG. 2 or 4.

2 and 3, the casing 120 includes a passage groove 121 for passing the ends of the cord 22, the rack gear 21, and the brace 23 of the leg 20 in the vertical direction. A bottom plate 122 having a bottom plate, both side plates 123 protruding from both sides of the bottom plate 122, and upper ends of both side plates 123 connected to each other and the same as the passage groove 121 of the bottom plate 122. It may include a top plate 124 having a through groove.

In addition, the casing 120 is connected to the front end of both side plate 123 and the bottom plate 122 and the top plate 124, the cord 22 of the leg 20, rack gear 21 and brace 23 Disassemble and assemble to a pair of front plates 125a and 125b spaced apart from each other so as to allow the ends of the panel to pass in a vertical direction, and to rear ends of both side plates 123, bottom plate 122, and top plate 124. It may include a back plate 126 possibly coupled.

In addition, the back plate 126 and the unit housing 115 may be further provided with an access hole (not shown) so as to penetrate through the maintenance passage 140 shown in FIG.

In addition, the casing 120 is spaced in parallel with the front plate (125a, 125b), is connected between the two side plate 123, the unit housing of the jacking unit 110 to install the jacking unit 110 Diaphragm 127 having an installation hole 127a of the same size as 115, and closing plates 128a and 128b connected between diaphragm 127 and front plates 125a and 125b around the installation hole 127a. It may include.

The two side plates 123, the bottom plate 122, the top plate 124, the closing plates 128a and 128b, and the diaphragm 127 may be coupled or fixed to the corresponding plates by welding.

The 'a' bracket having a bolt hole or the corresponding connecting member (not shown) coincides the bolt hole at the edge of the installation hole 127a of the unit housing 115 and the diaphragm 127 so that the unit housing 115 and the diaphragm are aligned. After being padded on the surface of the rim of the mounting hole 127a of 127, it can be engaged by a fastening bolt.

Accordingly, the unit housing 115 of the jacking unit 110 may be fixed to the installation hole 127a of the diaphragm 127.

The jacking unit 110 may include a bearing block 111 installed on the front plates 125a and 125b, a pinion shaft 112 rotatably coupled to the bearing block 111, and a pinion shaft toward the rear surface of the bearing block 111. And a pinion gear 113 coupled to 112.

In addition, the jacking unit 110 is a sealing (sealing, 114) coupled to the pinion shaft 112 toward the rear surface of the pinion gear 113, the seal 114 is coupled to the front of the housing, the edge of the housing front is A unit housing 115 coupled to the mounting hole 127a of the diaphragm 127, a gear box 116 installed inside the unit housing 115, and transmitting power to the pinion shaft 112, and a gear box. It may include a motor 117 connected to the gearbox 116 to operate 116.

Since the jack case 100 installs a plurality of jacking units 110 in one casing 120, the mounting process of the floating structure 10 may be very easy.

Referring to Figure 4, the lifting lug 130 is a means of being connected to the lifting cable of the crane, when lifting by a crane (not shown) or a crane of the main body 10 provided in the shipyard for mounting the jack case 100 Can be used.

On the other hand, the main body 10 has a groove shape corresponding to the width and length of the jack case 100 in order to insert the jack case 100 in the vertical direction along the periphery of the leg well 50, the main body 10 It may include a case installation portion 55 having a height corresponding to the distance between the bottom of the main deck and the inner wall 56 of the leg well 50 in contact with the case installation portion 55.

In order to maintain the jack case 100, the case installation unit 55 may further include one or more maintenance passages 140 extending downward from the main deck of the main body 10.

A cover such as a hatch (not shown) may be further provided on the upper main deck of the maintenance passage part 140. However, the inlet of the maintenance passage 140 may not be limited to the main deck, and may be configured to be connected to an access passage (not shown) made in the main body 10, and thus, may have a shape illustrated in FIG. 4. It may not be limited.

The maintenance passage part 140 has a side side facing the jack case 100 so that an operator can approach the rear plate 126 (see FIG. 3) of the jack case 100 through the maintenance passage part 140. It may be formed to be open.

The height of the casing of the jack case 100 may be the same as the height of the case installation unit 55, or may be determined to be the same as the distance between the bottom (eg bottom) of the main body 10 and the main deck.

The jack case 100 may be fitted to the case installation part 55 of the leg well 50 so that the jack case 100 may be installed inside the main body 10 without protruding to the outside of the main deck or the bottom of the main body 10. .

The part where the jack case 100 and the case installation part 55 contact each other may be fixed to each other by welding or bolting.

For example, the structural members of the jack case 100 and the case installation unit 55 may be fixed to each other by butt welding.

If necessary, after the reinforcing structure (not shown) is overlaid between the jack case 100 and the case installation portion 55 may also be fixed by welding or bolts.

Since the jack case 100 is installed inside the main body 10 into the legwell 50 of the main body 10 of the floating structure, the shipping space for the object to be shipped to the main body 10 It can be increased, and the space utilization of the main deck of the main body 10 can be increased.

While the present invention has been described with respect to specific embodiments of the floating structure according to the embodiments of the present invention, it should be understood that the present invention is not limited thereto, and should be construed as having the widest range according to the basic idea disclosed in this specification do. 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.

10: main body 20: leg
40: crane 50: leg well
100: Jack case 110: Jacking unit
120: casing 130: lifting lugs

Claims (7)

A body including leg wells;
A leg passing through the leg well and having a cord and a rack gear;
A case installation part disposed corresponding to the cord and the rack gear of the leg along the inner wall of the legwell; And
Floating structure including a jack case having a jacking unit for moving the leg in the vertical direction, the case installation portion. The method of claim 1,
The jack case is a floating structure located in the case installation portion so as not to protrude onto the main deck of the main body. The method of claim 1,
The jack case includes:
Floating structure comprising a casing in which the jacking unit is located. The method of claim 3, wherein
The casing includes:
A bottom plate having a passage groove for passing the cord of the leg and the ends of the rack gear and the brace in a vertical direction;
Both side plates protruding from both sides of the bottom plate;
An upper plate connecting the upper end portions of both side plates to each other and having the same passage groove as the passage groove of the bottom plate;
A pair of front plates connected to the front end portions of the side plates, the bottom plate and the top plate, and spaced apart from each other such that the cord of the leg and the ends of the rack gear and the brace can be inserted;
A back plate coupled to the both side plates, the bottom plate, and a rear end of the top plate in a disassembleable manner;
A diaphragm spaced parallel to the front plate and connected between the two side plates and having a mounting hole the same size as that of the unit housing of the jacking unit to install the jacking unit; And
And a closing plate connected between the diaphragm and the front plate around the installation hole. 5. The method of claim 4,
The jacking unit includes:
A bearing block installed on the front plate;
A pinion shaft rotatably coupled to the bearing block;
A pinion gear coupled to the pinion shaft toward the rear side of the bearing block;
A seal coupled to the pinion shaft toward the rear of the pinion gear;
A unit housing in which the sealing is coupled to the front face of the housing, and the edge of the housing front is coupled to the mounting hole of the diaphragm;
A gear box installed in the unit housing and transmitting power to the pinion shaft; And
Floating structure comprising a motor connected to the gearbox to operate the gearbox. The method of claim 1,
The case installation unit,
Floating structure comprising at least one maintenance passage for access to the jack case. The method of claim 3, wherein
And a lifting lug coupled to the top of the casing.

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