KR101431374B1 - apparatus for jack-up platform - Google Patents

Abstract

The present invention provides a jack-up platform driving device having a fixing supporter. The jack-up platform driving device comprises a leg part having multiple vertical shafts with rack gears formed on both surfaces thereof; a spud can coupled to the bottom of the leg part, fixed while being in surface-contact with the seabed, and supporting the leg part; a fixing supporter connected to the outside of the leg part to be slid along the leg part, having connection parts arranged on the outer surface to be coupled to an offshore structure, and capable of moving up and down the leg part; and lifting units installed on one side of the fixing supporter, and connected to the rack gears to generate driving force for making the leg part slide on the fixing supporter. The jack-up platform driving device according to the present invention can be easily manufactured by reducing the number of the vertical shafts of the leg part, and can reduce the manufacturing costs of the offshore structure. The present invention can reduce the malfunctions of a jack-up platform and can facilitate the maintenance of the jack-up platform by having the structure simplified by reducing the number of gears. Also, the three-stepped gears and gear boxes connected to one driving motor can convert a rotary motion to a vertical motion and can provide a low-capacity driving effect.

Description

Apparatus for jack-up platform < RTI ID = 0.0 >

The present invention relates to a jack-up platform drive apparatus, and more particularly, to an apparatus for driving a leg portion of a jack-up system applied to an offshore wind power generator installation line, a drilling rig and a marine platform.

Generally, offshore wind turbine installation lines, drilling platforms and marine platforms are equipped with devices for lifting and lowering platforms. In particular, when preparing to operate an offshore platform, the platform should be installed at a certain distance from the sea level to minimize the influence of the offshore environment. At this time, the leg is lowered and fixed to the floor of the sea floor. The offshore wind turbine installation line and jack-up platform are usually lowered by three or more supporting legs, depending on the platform, to fix the hull. On the other hand, the method of driving the jack-up system is largely based on a method using a hydraulic cylinder or a method using a rack-pinion gear. In the case of a hydraulic cylinder, a hydraulic hole is formed in the support leg, and in this case, there arises a problem that the strength of the leg is lowered, so that it becomes difficult to use the hydraulic cylinder as the weight of the marine platform increases. Also, the increase of the surface area greatly affects the algae. Therefore, most of the marine platforms use rack-pinion gear.

As an example of a jack-up platform using such a rack-and-pinion gear, Korean Patent Laid-Open Publication No. 10-2013-0017228 is a ship for installing a wind turbine generator. A jack-up device installed on the hull and for lifting the hull; There is provided a wind power generator installation work vessel and a wind power generator installation work vessel elevation method including a levitating apparatus installed on a hull and reducing a hull load transmitted to a jack-up apparatus when the jack-up apparatus lifts a hull There is a bar.

However, the above-described method has a problem that the manufacturing process is difficult and the problem of the rack-pinion gear having a complicated configuration is present, and the structure is further complicated by including an additional structure for raising and lowering. When a jack-up platform is manufactured using a rack-pinion gear, a large number of manufacturing steps are required to manufacture the frame and the support leg of the support leg, so that it is difficult to manufacture the jack-up platform. In the case of using the rack- The structure is complicated, and the number of gears is increased and the capacity of the motor is increased.

It is an object of the present invention to provide a jack-up platform drive device that can be mounted on an offshore wind power generator installation line, a drilling rig and a marine hull so that the leg supporting the hull can be raised and lowered.

The present invention relates to a leg portion comprising a plurality of vertical shafts having rack gears on both sides thereof; A sprung can coupled to a lower side of the leg portion, fixed to the bottom of the sea by being fixed to the bottom of the sea, and supporting the leg portion by preventing infiltration of the leg portion with the bottom surface; And a connecting portion that is connected to the marine structure at an outer side of the leg portion to be slidable along the leg portion at an outer side of the leg portion and includes a fixed support for lifting and lowering the leg portion, And a lifting unit connected to the lifting unit to generate a driving force for sliding the legs on the lifting support.

The elevating means may include a driving unit provided on the outside of the fixed support and having a plurality of spur gears connected to a driving motor and a driving shaft of the driving motor and a sun gear disposed on a side of the driving unit, A planetary gear box for increasing and decreasing a driving force generated by the driving motor by connecting a plurality of planetary gears to the outside of the sun gear, a driving gear disposed inside the fixed support and extending from the sun gear shaft, And a connection gear unit having a plurality of driven gears connected to the gears and a plurality of pinion gears connected to the drive gears.

The connecting gear portion includes a driving gear, first, second, third and fourth driven gears, and first, second, third and fourth pinion gears provided inside the fixed support, And the first and second driven gears are connected to one side of the driving gear to rotate and the first pinion gear is connected to the first driven gear and the second pinion gear is connected to the driven gear, The third driven gear is connected to the second driven gear at one side and the third pinion gear is connected at the other side for rotation and the fourth driven gear is connected to the first driven gear at one side, And the fourth pinion gear is connected to the other side, and the first, second, third and fourth pinion gears slide on the rack gear according to the rotation of the driving gear.

The drive unit includes a drive motor and first, second, and third spur gears. A first spur gear is connected to a drive shaft of the drive motor. The second spur gear has a center axis that is parallel to the drive shaft, And the third spur gear has a central axis that is parallel to the second spur gear and is connected to the second spur gear so that the driving force is transmitted as the driving shaft rotates.

The outer diameter of the second spur gear is larger than the outer diameter of the first spur gear and the outer diameter of the third spur gear is larger than the outer diameter of the second spur gear.

The vertical axis of the leg section includes first, second, and third vertical axes. The first vertical axis, the second vertical axis, and the third vertical axis are spaced apart from each other at apexes of a triangular prism, And a stiffener for connecting and fixing the vertical axes between the vertical axis and the third vertical axis.

The jack-up platform driving apparatus according to the present invention provides the following effects.

First, it is easy to manufacture due to the decrease of the quantity of vertical axis of the leg part, and the cost for manufacturing the offshore structure is decreased.

Second, the simplification of the structure due to the reduction in the number of gears used reduces the risk of failure of the jack-up platform, and maintenance is easy.

Third, the configuration of three gears connected to one driving motor and the gear box convert rotational motion to vertical motion, and even if a low-capacity driving motor is used, the leg portion is moved up and down like a large-capacity driving motor.

1 is a perspective view of a jack-up platform driving apparatus according to an embodiment of the present invention.
2 is a use state diagram of the jack-up platform driving apparatus of FIG.
3 is a plan sectional view of the lifting means of the jack-up platform driving apparatus of FIG.
4 is a plan view of a fixed support of the jack-up platform drive apparatus of FIG.
Fig. 5 is a side view of the fixed support of the jack-up platform drive device of Fig. 1;
6 is a perspective view of the fixed support of the jack-up platform drive device of FIG.
FIG. 7 is a configuration diagram of gears of a coupling unit of the jack-up platform driving apparatus of FIG. 1;

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

FIG. 1 is a perspective view of a jack-up platform driving apparatus according to an embodiment of the present invention, FIG. 2 is a state of use of the jack-up platform driving apparatus of FIG. 1, Up platform driving apparatus of Fig. 1, Fig. 5 is a side view of a fixed support of the jack-up platform driving apparatus of Fig. 1, and Fig. 6 is a side elevational view of the jack- Up platform driving apparatus of FIG. 1, and FIG. 7 is a configuration diagram of the gears of the connecting unit of the jack-up platform driving apparatus of FIG.

Referring to FIG. 1, a jack-up platform driving apparatus 100 according to an embodiment of the present invention includes a leg portion 10, a spandan can 20, and a fixed support 30.

The leg portion 10 has a plurality of vertical shafts 12, 13, 14 having rack gears 11 on both sides thereof. The vertical axis 12 includes first, second and third vertical axes 12,13 and 14. The first vertical axis 12, the second vertical axis 13 and the third vertical axis 14 are vertexes of a triangular prism And a reinforcing member 15 for connecting and fixing the vertical axes 12, 13 and 14 to each other between the first vertical axis 12, the second vertical axis 13 and the third vertical axis 14, As shown in FIG.

The spout can 20 is attached to the lower side of the leg portion 10 and is fixed to the bottom of the sea so as to support the leg portion 10.

Meanwhile, the spud can 20 prevents the leg portion 10 from penetrating into the seabed surface, and is made of heavy steel to maintain the center of gravity. However, since the weight of the leg portion 10 Since the rising and falling efficiency may be lowered, it may be made hollow.

When the spud can 20 is hollow, protrusions are formed on the bottom and side surfaces of the spud can 20, and when the spud can 20 is seated on the seabed surface, the protrusions penetrate the bottom surface Can be fixed. In this case, the weight is reduced compared to the spandan cans made of steel, but exhibits the same fixing effect.

The fixed support 30 has elevating means 40 on one side and is slidably connected to the leg portion 10 on the outside of the leg portion 10. The fixed support 30 may have a connection portion 31 coupled to an offshore structure.

The connecting portion 31 may be provided with various fastening devices, but it is also possible to weld the connecting portion 31 by welding to an offshore structure.

The elevating means 40 includes a driving unit 46 and includes a planetary gear box 49 and a driving gear 51 and a connecting unit 50.

The drive unit 46 includes a drive motor 41, a drive shaft 42, and a plurality of spur gears 43, 44, and 45.

Since the elevating means 40 is connected to and slides on the respective vertical axes 12, 13 and 14 of the leg portion 10, three elevating means 40 may be provided.

The jack-up platform driving apparatus 100 typically has four or more independent structures. In the present invention, the jack-up platform driving apparatus 100 is provided with three elevating means and has the same effect as that having four or more independent structures.

The driving motor 41 may include a control unit (not shown) for controlling the operation of the driving motor 41. The control unit controls the operation of the driving motor 41, The descent can be controlled.

On the other hand, when a plurality of the jack-up platform driving apparatuses 100 are constructed on the marine structure, the jack-up platform driving apparatus 100 can be fixed at different heights according to the variation of the depth of the sea floor. So that the individual rising and falling of the leg portion 10 can be controlled through the device. Therefore, even if the sea floor is not flat, each jack-up platform 100 can be raised and lowered to a different height, so that the marine structure in which the jack-and-up platform driving device 100 is installed is kept horizontal do.

The plurality of spur gears includes a first spur gear 43, a second spur gear 44 and a third spur gear 45. The first spur gear is connected to the drive shaft 42 of the drive motor 41, And transmits the driving force of the driving motor 41. The second spur gear 44 has a central axis parallel to the drive shaft 42 and is connected to the first spur gear 43. The third spur gear 45 has a central axis that is parallel to the second spur gear 44 and is connected to the second spur gear 44 to transmit the driving force as the driving shaft 42 rotates.

The outer diameter of the second spur gear 44 is larger than the outer diameter of the first spur gear 43 and the outer diameter of the third spur gear 45 is larger than the outer diameter of the second spur gear 44 . This is because increasing the outer diameter of the spur gear reduces the number of revolutions but increases the torque to obtain a sufficient driving force even if the driving motor 41 having a small capacity is used.

The planetary gear box 49 has a sun gear 47 and a plurality of planetary gears 48. The sun gear 47 is disposed on the axis of the third spur gear 45 and a plurality of planetary gears 48 are provided outside the sun gear 47.

The planetary gear 48 connected to the sun gear 47 may be composed of first, second and third planetary gears. The first, second and third planetary gears rotate about an axis parallel to the axis of the sun gear 47 and are connected to one side of the planetary gear 48 so as to rotate independently of the rotation of the sun gear. Not shown). A ring gear (not shown) may be disposed outside the planetary gear.

When the planetary gear carrier is fixed and the sun gear 47 is rotated by the driving force transmitted from the third spur gear 45, the ring gear and the sun gear 47 rotate in opposite directions, and the ring gear is decelerated When the ring gear is rotated, the sun gear 47 is driven to rotate and the sun gear 47 is accelerated.

Accordingly, the driving force transmitted from the third spur gear 45 can be increased or decreased by adjusting the sun gear 47, the planetary gear 48, and the ring gear of the planetary gear box 49, The speed of the leg portion 10 can be adjusted.

6 and 7, the linkage unit 50 is provided inside the fixed support 30 and includes a driving gear 51, first, second, third, Fourth driven gears 52, 53, 54 and 55 and first, second, third and fourth pinion gears 56, 57, 58 and 59. The driving gear 51 is connected to one end of the sun gear 47 projecting from the planetary gear box 49. The driving gear 51 is located at the center of the coupling unit 50 and transmits driving force.

 The first and second driven gears 52 and 53 are connected to the drive gear 51 at one side and rotate. The first pinion gear 56 is connected to the first driven gear 52, The second pinion gear 57 is connected to the second driven gear 53 and rotates.

The third driven gear 54 is connected to the second driven gear 53 at one side and the third pinion gear 58 is connected at the other side to receive the driving force from the second driven gear 52 and rotate.

The fourth driven gear 55 is connected to the first driven gear 52 on one side and the fourth pinion gear 49 on the other side to rotate together with the first driven gear 52 as it rotates And the fourth pinion gear 59 connected to the other side is also rotated.

 The driving force transmitted from the driving gear 51 is transmitted to the first driven gear 52 and the second driven gear 53 and the first driven gear 52 and the second driven gear 53 are driven And controls the distance between the gear 51 and the first pinion gear 56 and the second peer gear 57.

The fourth driven gear 55 is connected to the first driven gear 52 and rotates in a direction opposite to the first driven gear 52. The first driven gear 52 is connected to the first driven gear 56 via the first pinion gear 56, The fourth pinion gear 59 connected to the second pinion gear 55 is similarly rotated in the opposite direction. Accordingly, when the first pinion gear 56 rotates clockwise, the fourth pinion gear 59 rotates counterclockwise, the rack gear 11 connected to the pinion gear 59 slides downward, The portion 10 is lowered.

The second pinion gear 57 and the third pinion gear 58 are connected to the rack gear 11 to move up and down the leg portion 10 through the same process. Accordingly, as the first, second, third, and fourth pinion gears 56, 57, 58, and 59 rotate, the rack gear 11 slides on and the leg portion 10 is lifted up and down.

Hereinafter, a method of operating the jack-up platform driving apparatus 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In order to maintain the marine structure in a floating position in the ocean, the jack-up platform driving apparatus 100 is installed in the marine structure. Although the jack-up platform 100 driving apparatuses are installed to be opposed to each other independently, the operation of the leg sections 10 adjusts each of the control sections in cooperation with each other, so that the leg sections 10, The height of the sea structure can be adjusted to maintain the horizontal structure with respect to sea level.

The elevating means 40 of the jack-up platform driving apparatus 100 is operated at a position where the offshore structure is to be installed. When the driving motor 41 is rotated in one direction by the adjustment of the control unit, a driving force is generated and the driving force is greatly increased through the three-stage spur gears 43, 44 and 45 connected to the driving shaft 42. The sun gear 47 of the planetary gear box 49 connected to the third spur gear 45 is accelerated or reduced in accordance with the gear ratio adjustment of the operator to adjust the driving force.

The driving force transmitted from the sun gear 47 is transmitted to the coupling unit 50 again, and the driving gear 51 is rotated in one direction. The first driven gear 52 and the second driven gear 53 connected by the rotation of the drive gear 51 rotate and the first pinion gear 56 connected to the first driven gear 52 transmits the driving force And rotates.

  The fourth pinion gear 59 is coupled to the fourth driven gear 55 to be rotated by receiving driving force and the first pinion gear 56 and the fourth pinion gear 59 rotate in opposite directions And the rack gears 11 disposed on both sides of the vertical shafts 12, 13 and 14 are disposed and slid between the first pinion gear 56 and the fourth pinion gear 59, 10 are moved up and down.

 When the spindle can 20 is fixed to the bottom of the sea after the rotation of the driving motor 41 is determined and the leg portion 10 is lowered by rotating in one direction, the elevation means 50 adjusts the leg portion 10, . When the operation is completed, the leg portion 10 is raised through an opposite process so that the offshore structure can be moved on the sea surface.

As described above, according to the jack-up platform driving apparatus 100 of the present invention, the vertical axes 12, 13 and 14 of the leg portion 10 are arranged at the vertexes of the triangle, Thereby facilitating the manufacture of the jack-up platform driving apparatus 100. [0050] FIG.

Therefore, the production efficiency of the offshore structure is increased, and the jack-up platform driving apparatus 100 can be provided at low cost and high efficiency by raising and lowering the leg portion 10 by using the low-capacity driving motor 41.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: jack-up platform driving device 10: leg part
11: rack gear 12: first vertical axis
13: second vertical axis 14: third vertical axis
15: Stiffener 20: Spread can
30: fixed support 40: elevating means
41: drive motor 42: drive shaft
43: first spur gear 44: second spur gear
45: third spur gear 46:
47: sun gear 48: planetary gear
49: Planetary gear box 50: Connecting gear box
51: drive gear 52: first driven gear
53: second driven gear 54: third driven gear
55: fourth driven gear 56: first pinion gear
57: second pinion gear 58: third pinion gear
59: Fourth pinion gear

Claims (6)

A leg portion having a plurality of vertical shafts having rack gears on both sides thereof;
A sprung can coupled to a lower side of the leg portion, fixed to the bottom of the sea by being fixed to the bottom of the sea, and supporting the leg portion by preventing infiltration of the leg portion with the bottom surface; And
A connecting portion for engaging with an offshore structure is disposed on an outer side of the leg portion, a fixed support for moving up and down the leg portion,
And raising and lowering means installed at one side of the fixed support and connected to the rack gear to generate a driving force to slide the leg portion on the fixed support,
The elevating means includes:
A driving unit provided outside the fixed support and including a driving motor and a plurality of spur gears connected to a driving shaft of the driving motor;
A planetary gear box provided on a side surface of the drive unit and having a sun gear disposed on an axis of the spur gear and connected to a plurality of planetary gears outside the sun gear to increase or decrease a driving force generated by the drive motor,
And a connecting gear portion that is disposed inside the fixed support and includes a driving gear that is extended from and coupled to the sun gear shaft, a plurality of driven gears that are connected to the driving gear, and a plurality of pinion gears that are connected to the driven gear. Up platform drive. delete The method according to claim 1,
The connecting gear portion
A first, second, third, fourth driven gear and first, second, third and fourth pinion gears provided inside the fixed support,
Wherein the first and second driven gears are connected to one side of the driving gear to rotate and the first pinion gear is connected to the first driven gear , The second pinion gear is connected to the second driven gear and rotates, the third driven gear is connected to the second driven gear at one side and the third pinion gear is connected to the other side for rotation, And a fourth pinion gear is connected to the other side of the rack gear so that the first, second, third and fourth pinion gears slide on the rack gear according to the rotation of the driving gear. Up platform drive. The method according to claim 1,
The drive unit includes a drive motor and first, second, and third spur gears,
Wherein the first spur gear is connected to the driving shaft of the driving motor and the second spur gear is connected to the first spur gear having a central axis which is parallel to the driving shaft, And the second spur gear is connected to the second spur gear so that the driving force is transmitted as the driving shaft rotates. The method of claim 4,
The teeth of the first spur gear rotate in engagement with the teeth of the second spur gear, the teeth of the third spur gear rotate in engagement with the teeth of the second spur gear, and the outer diameter of the third spur gear , And the gear ratio is increased. The method according to claim 1,
Wherein the vertical axis of the leg portion includes first, second, and third vertical axes,
Wherein the first vertical axis, the second vertical axis, and the third vertical axis are spaced apart from each other at a vertex of a triangular prism, and the vertical axis is connected between the first vertical axis, the second vertical axis and the third vertical axis, Further comprising: a jack-up platform driving device for driving the jack-up platform.

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