Wind propulsion system and ship having the same

Abstract

The present invention relates to a wind propulsion system and a ship having the same. In the wind propulsion system of the present invention including a stator, a rotor, a driving part, and a lower bearing part, the driving part includes: a gearbox, which is internally provided with a driving shaft rotated by a motor, a driving gear provided on the driving shaft, a driven gear meshing and rotating with the driving gear, and a first driven shaft combined with the driven gear and supporting the rotation of the driven gear, and is arranged inside the stator; and a bearing housing, which is connected to the first driven shaft by a coupling member and clamps a second driven shaft for transmitting rotational force to a disc. The rotor includes: a lower rotor, which is provided at the upper end with an annular first edge panel extending inward by a predetermined length and having a space for accommodating the disc; an upper rotor, which is provided at the lower end with an annular second edge panel extending inward by a predetermined length and having a space for accommodating the disc; and a coupling member, which couples the lower rotor, the upper rotor, and the disc.

Description

Technical Field

[0001] The present invention relates to a wind propulsion system and a ship having the same. Background Art

[0002] Ships generally use fossil fuels to obtain propulsion force. As is well known, large power engines for driving boosters and the like are installed on ships, and large ships consume hundreds of tons of fuel during long voyages. Operating these ships requires huge costs, and the emission of pollutants caused by fuel consumption has also become a very serious problem.

[0003] To solve these problems, it is preferable to diversify the power sources of ships. For example, electric propulsion ship technologies that obtain part of the propulsion force from electric motors have been developed and applied. In addition, technologies for obtaining electric power by utilizing various environmental conditions that ships experience at sea have also been developed.

[0004] In addition, as natural energy sources that do not generate exhaust gas at all, the utilization of sunlight, wind power, etc. has also attracted much attention. In particular, in the case of wind power, by installing equipment such as sails on the deck, the wind power can be simply converted into propulsion force, so it has the advantages of simple structure and low maintenance cost.

[0005] In addition, in recent years, different from the commonly known sails, a rotor device (as an example, a magnus rotor) that can directly rotate using power and convert wind power into propulsion force in a required direction is mounted on a ship. Such a rotor device is composed of a stator and a rotor. The stator is fixed on the deck, and the rotor is configured in a cylindrical shape surrounding the surface and top surface of the stator and adjusts the rotation speed or direction.

[0006] Different from sails, such a rotor device can process wind power into required propulsion force, so a lot of research and development have been carried out recently. However, the rotor device is in the form of a large column with a diameter of several meters and a height of dozens of meters, so there are still many problems to be solved / improved in terms of installation in the deck, durability according to ship movement, interference with the forward view, control, etc. Summary of the Invention

[0007] Technical Problem to be Solved

[0008] The present invention is proposed to solve the problems of the prior art as described above. The object of the present invention is to provide a wind propulsion system and a ship having the same that can improve the structural performance of a rotor, make manufacturing easy, ensure the structural stability of a driving part for driving the rotor, ensure the structural stability of a lower bearing part provided between the rotor and the stator and make maintenance easy, and ensure the structural stability through the lightweight of an end plate.

[0009] Technical solution for solving the problem

[0010] The wind propulsion system according to one aspect of the present invention may include: a stator vertically provided on a deck; a rotor configured in a cylindrical shape surrounding the outside of the stator; a driving unit configured to transmit rotational power to the rotor through a disk connected to the rotor; and a lower bearing unit provided at the lower part of the rotor to suppress lateral movement of the rotor. The driving unit may include: a gearbox having a driving shaft rotated by a motor, a driving gear provided on the driving shaft, a driven gear meshing with the driving gear to rotate, and a first driven shaft coupled to the driven gear and supporting rotation of the driven gear, and provided inside the stator; and a bearing housing connected to the first driven shaft by a coupling member and clamping a second driven shaft for transmitting rotational force to the disk. The rotor may include: a lower rotor having a ring-shaped first edge panel extending inward by a predetermined length at an upper end and having a space for accommodating the disk; an upper rotor having a ring-shaped second edge panel extending inward by a predetermined length at a lower end and having a space for accommodating the disk; and a coupling member coupling the lower rotor, the upper rotor, and the disk.

[0011] Specifically, the bearing housing may be provided inside the top surface of the stator or may be provided outside the top surface of the stator.

[0012] Specifically, an upper part of the driving shaft may be rotatably coupled to the top surface of the gearbox using a first bearing, and a lower part of the driving shaft may be rotatably coupled to the bottom surface of the gearbox using a second bearing. The first bearing and the second bearing may be bearings for preventing lateral force or lateral vibration of the driving shaft.

[0013] Specifically, an upper part of the first driven shaft may be rotatably coupled to the top surface of the gearbox using a third bearing, and a lower part of the first driven shaft may be rotatably coupled to the bottom surface of the gearbox using a fourth bearing. The third bearing and the fourth bearing may be bearings for preventing lateral force of the first driven shaft.

[0014] Specifically, the second driven shaft may be rotatably coupled to the top surface of the stator using a fifth bearing and a sixth bearing arranged in series. The fifth bearing may be a bearing for preventing axial force of the second driven shaft, and the sixth bearing may be a bearing for preventing lateral force of the second driven shaft.

[0015] Specifically, the coupling member may include: a first clamping plate that clamps the bottom surface of the first edge panel and the bottom surface of the disk; a second clamping plate that clamps the top surface of the first edge panel and the top surface of the disk; a first bolt member that fixes the first clamping plate, the second clamping plate, and the disk; and a second bolt member that fixes the first edge panel and the second edge panel.

[0016] Specifically, the coupling member may further include: a first bonding member disposed between the first edge panel and the second clamping plate; and a second bonding member disposed between the second edge panel and the second clamping plate.

[0017] Specifically, a foundation structure on land can be carried onto the deck by using a lifting device. On land, the disk and the driving part are arranged on the upper part of the stator. The lower rotor is lifted by the lifting device and the stator is received inside the lower rotor. The lower rotor is coupled to the disk by using the coupling member. The lower rotor accommodating the stator is carried onto the foundation structure by using the lifting device. The upper rotor on land is aligned with the upper part of the lower rotor carried onto the foundation structure by using the lifting device. The lower rotor is coupled to the upper rotor by using the coupling member.

[0018] A ship according to another aspect of the present invention may include the above-described wind propulsion system.

[0019] Technical effects

[0020] The wind propulsion system of the present invention can improve the structural performance of the rotor and facilitate manufacturing, can ensure the structural stability of the driving part for driving the rotor, can ensure the structural stability of the lower bearing part provided between the rotor and the stator and facilitate maintenance, and can ensure the structural stability of the lightweight end plate. Description of the drawings

[0021] Figure 1 FIG. is a view showing a ship having a wind propulsion system according to an embodiment of the present invention.

[0022] Figure 2 FIG. is a view for explaining a wind propulsion system according to an embodiment of the present invention.

[0023] Figure 3 is for explaining Figure 2 FIG. is a view of a first embodiment of the rotor shown.

[0024] Figure 4 FIG. is a view for explaining a unit panel constituting the rotor of the first embodiment.

[0025] Figure 5It is a diagram for explaining Figure 2 the second embodiment of the rotor shown.

[0026] Figure 6 It is a diagram for explaining the coupling member that connects the lower rotor and the upper rotor constituting the rotor of the second embodiment.

[0027] Figure 7 (a) to (d) are diagrams for explaining the mounting process of the rotor of the second embodiment.

[0028] Figure 8 It is for explaining Figure 2 the first embodiment of the end plate shown.

[0029] Figure 9 It is for explaining Figure 2 the first embodiment of the drive unit shown.

[0030] Figure 10 It is for explaining Figure 2 the second embodiment of the drive unit shown.

[0031] Figure 11 It is for explaining Figure 2 the third embodiment of the drive unit shown.

[0032] Figure 12 It is for explaining Figure 2 a partial view of a wind propulsion system of the first embodiment of the lower bearing portion shown.

[0033] Figure 13 It is a view taken along the Figure 12 A - A' line of.

[0034] Figure 14 It is a view taken along the Figure 13 B - B' line of.

[0035] Figure 15 It is for explaining Figure 2 a partial view of a wind propulsion system of the second embodiment of the lower bearing portion shown.

[0036] Figure 16 It is a view taken along the Figure 15 A - A' line of.

[0037] Figure 17 It is a view taken along the Figure 16 B - B' line of.

[0038] Figure 18 It is for explaining Figure 2 a partial view of a wind propulsion system of the third embodiment of the lower bearing portion shown.

[0039] Figure 19 This is a diagram for explaining the bearing unit that constitutes the lower bearing portion of the third embodiment.

[0040] Figure 20 (a) to (c) of Figure 19 are diagrams showing the state where the bearing unit of

[0041] Figure 21 is for explaining Figure 2 a partial view of the wind propulsion system of the fourth embodiment of the lower bearing portion shown in

[0042] Figure 22 This is a diagram for explaining the bearing unit that constitutes the lower bearing portion of the fourth embodiment.

[0043] Figure 23 is for explaining Figure 2 a partial view of the wind propulsion system of the fifth embodiment of the lower bearing portion shown in

[0044] Figure 24 is a diagram cut along the A-A' line of Figure 23

[0045] Figure 25 is a diagram cut along the B-B' line of Figure 24

[0046] Figure 26 is for explaining Figure 2 a partial view of the wind propulsion system of the sixth embodiment of the lower bearing portion shown in

[0047] Figure 27 is a diagram cut along the A-A' line of Figure 26 Detailed Description of the Preferred Embodiments

[0048] The object, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in relation to the accompanying drawings. When assigning reference numerals to the structural elements of each drawing in this specification, it should be noted that for the same structural elements, even if shown in different drawings, they should preferably have the same reference numerals as much as possible. Additionally, when explaining the present invention, if it is determined that a detailed description of related well-known technologies may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

[0049] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0050] Figure 1 This is a diagram showing a ship S having a wind propulsion system 1 according to an embodiment of the present invention, Figure 2 and this is a diagram for explaining the wind propulsion system 1 according to an embodiment of the present invention. ​​​

[0051] As Figure 1 and Figure 2 shown, at least one or more wind propulsion systems 1 according to an embodiment of the present invention may be provided on the deck of a ship S, directly rotate using power and convert wind power into a propulsion force in a desired direction, and may include: an infrastructure 10, a stator 20, a rotor 30, end plates 40, a disk 50, a driving unit 60, and a lower bearing unit 70.

[0052] The infrastructure 10 may be fixedly provided on the deck, and the stator 20 may be provided on its upper part.

[0053] The stator 20 may be vertically provided on the infrastructure 10 fixed on the deck, and may constitute the shaft of the rotor 30.

[0054] Such a stator 20 may be a structure in a hollow cylindrical shape inside, and the driving unit 60 may be mounted on its upper part.

[0055] The rotor 30 is a structure configured in a cylindrical shape surrounding the outside of the stator 20, and it may rotate 360 degrees by the power given by the driven unit 60 with the stator 20 provided / fixed on the deck of the ship S as the axis. At this time, due to the hydrodynamic interference between the wind around the ship S and the cylindrical rotor 30, the wind may be converted into the propulsion force of the ship S.

[0056] That is, the rotor 30 may receive the power of the driving unit 60 through the disk 50 and rotate. At this time, the rotor 30 may rotate based on the stator 20 as the central axis in the vertical direction, generate an increased pressure on one side, and generate a decreased pressure / suction on the other side. Positive pressure and negative pressure are respectively generated on one side and the opposite side of the rotor 30, thereby generating a propulsion force as the force for moving the ship 100.

[0057] In addition, according to the direction of the rotor 30, the directions of forming positive pressure and negative pressure may be different. Therefore, the navigation direction of the ship S may also be controlled by rotating the rotor 30 in the clockwise or counterclockwise direction by converting its direction.

[0058] Of course, the ship in this embodiment is not limited to forming a propulsion force by driving the rotor 30, and obviously, it may also be combined with existing embodiments. For example, when the navigation of the ship S mainly uses a main engine (not shown) and a rudder, etc., the rotor 30 may play an auxiliary role. On the contrary, since it is also possible to mainly use the operation of the rotor 30 and use the main engine and the rudder to assist the navigation of the ship S, the driving of the rotor 30 may be performed as needed in various situations.

[0059] The above-mentioned rotor 30 can be connected in a rotatable manner to a lower bearing portion 70 provided at the lower part, and is connected to a disk 50 that receives the power of a driving portion 60 provided at the upper part of the stator 20 and provides a rotational force.

[0060] The upper end portion of such a rotor 30 can be open, and an end plate 40 can be provided at the opened portion thereof.

[0061] The disk 50 can be in a shape corresponding to the inner circumferential surface of the rotor 30, for example, a circular plate shape, and its outer circumferential surface can be fixedly connected to the inner circumferential surface of the rotor 30. Such a disk 50 can be connected to the driving portion 60 to receive the power of the driving portion 60 and impart a rotational force to the rotor 30.

[0062] The driving portion 60 can be provided at the upper part of the stator 20 and connected to the disk 50. Such a driving portion 60 can generate power capable of rotating the rotor 30 and transmit the rotational force to the rotor 30 through the disk 50.

[0063] The lower bearing portion 70 can be provided at the lower part of the rotor 30. The lower bearing portion 70 can be configured to suppress the lateral movement of the rotor 30 when the rotor 30 rotates using the power of the driving portion 60.

[0064] As described above, the wind propulsion system 1 of the present embodiment includes: a stator 20, a rotor 30, an end plate 40, a disk 50, a driving portion 60, and a lower bearing portion 70. Hereinafter, with reference to Figures 3 to 27 each component of such a wind propulsion system 1 will be specifically described.

[0065] The above-mentioned Figure 2 The shown rotor 30 is a structure having a hollow cylindrical shape inside, and it can be implemented in various embodiments. Hereinafter, with reference to Figures 3 to 4 the rotor 30a of the first embodiment will be described, and with reference to Figures 5 to 7 the rotor 30a of the second embodiment will be described.

[0066] Figure 3 is a diagram for explaining Figure 2 the first embodiment of the shown rotor 30, Figure 4 is a diagram for explaining a unit panel 31a constituting the rotor 30a of the first embodiment.

[0067] As Figures 3 to 4 shown, the rotor 30a of the first embodiment can be constituted by the combination of a plurality of unit panels 31a.

[0068] The unit panel 31a can be formed to have a predetermined width, length, and thickness by stretch molding using glass fiber, carbon fiber, or various composite materials.

[0069] The unit panel 31a can be configured to have an interference fit with other adjacent unit panels 31a.

[0070] As Figure 4 shown, the unit panel 31a can be composed of a curved panel 31a1 having a curved surface shape in the width direction and extending in the length direction, a female connector 31a2 provided along one side edge of the curved panel 31a1, and a male connector 31a3 provided along the other side edge of the curved panel 31a1. The thicknesses of the curved panel 31a1, the female connector 31a2, and the male connector 31a3 that make up the unit panel 31a can be the same or similar.

[0071] The curved panel 31a1 can have a curved surface corresponding to the radius of the rotor 30a.

[0072] The female connector 31a2 and the male connector 31a3 can have various structures capable of having an interference fit between adjacent unit panels 31a.

[0073] As an example, the female connector 31a2 can be composed of a first plate 31a21 that bends and extends from one end of the curved panel 31a1 toward the inner side of the rotor 30a, a second plate 31a22 that bends and extends from the extended end of the first plate 31a21 toward the outer side of the curved panel 31a1, a third plate 31a23 that bends and extends from the extended end of the second plate 31a22 toward the outer side of the rotor 30a, and a fourth plate 31a24 that bends and extends from the extended end of the third plate 31a23 toward the inner side of the curved panel 31a1. An "L" - shaped insertion space 31a4 corresponding to the shape of the male connector 31a3 can be formed by the first to fourth plates 31a24. At this time, the male connector 31a3 can be composed of a fifth plate 31a31 that bends and extends from the other end of the curved panel 31a1 toward the inner side of the rotor 30a and a sixth plate 31a32 that bends and extends from the extended end of the fifth plate 31a31 toward the inner side of the curved panel 31a1 to correspond to the "L" - shaped insertion space 31a4 of the female connector 31a2.

[0074] Thus, the rotor 30a of this embodiment can form a hollow cylindrical shape inside by using the interference fit method of the unit panel 31a configured as described above, so that compared with the adhesive bonding method or the bolt bonding method, the bonding process can be simplified.

[0075] In addition, the rotor 30a of this embodiment uses glass fiber, carbon fiber, or various composite materials to manufacture the unit panel 31a by stretch forming. Thus, not only can the manufacturing cost be saved by simplifying the manufacturing process, but also weight reduction can be achieved.

[0076] In addition, the interference fit portion of the female connector 31a2 and the male connector 31a3 of the rotor 30a in this embodiment is thicker than the curved panel 31a1, so that it can naturally act as a reinforcing member in the longitudinal direction. Therefore, compared with the existing clamping manufacturing method in which resin or the like is injected inside for reinforcement, it may be more economical.

[0077] Figure 5 is for explaining Figure 2 the figure of the second embodiment of the rotor 30 shown, Figure 6 is for explaining the figure of the coupling member 33b that connects the lower rotor 31b and the upper rotor 32b constituting the rotor 30b of the second embodiment, Figure 7 (a) to (d) of which are for explaining the mounting process of the rotor 30b of the second embodiment.

[0078] As Figures 5 to 7 shown, the rotor 30b of the second embodiment can be composed of a two-stage assembly structure in which the lower rotor 31b and the upper rotor 32b are assembled through the coupling member 33b.

[0079] The lower rotor 31b and the upper rotor 32b can respectively be structures in the shape of a hollow cylinder, and can be formed of the same material and shape.

[0080] The lower rotor 31b can be formed to a size capable of accommodating the stator 20, the disk 50, the drive unit 60, and the lower bearing unit 70.

[0081] At the upper end of the lower rotor 31b, an annular first edge panel 31b1 extending inward by a predetermined length and having a space for accommodating the disk 50 can be provided, and at the lower end of the upper rotor 32b, an annular second edge panel 32b1 extending inward by a predetermined length and having a space for accommodating the disk 50 can be provided.

[0082] The coupling member 33b can couple the lower rotor 31b to the disk 50 in a state where the stator 20 having the disk 50 and the drive unit 60 provided thereon is accommodated inside the lower rotor 31b and the first edge panel 31b1 is aligned with the disk 50, and in a state where the lower rotor 31b is coupled to the disk 50, couple the first edge panel 31b1 of the lower rotor 31b to the second edge panel 32b1 of the upper rotor 32b.

[0083] Specifically, the coupling member 33b may include: a first clamping plate 33b1 that clamps the bottom surface of the first edge panel 31b1 and the bottom surface of the disk 50; a second clamping plate 33b2 that clamps the top surface of the first edge panel 31b1 and the top surface of the disk 50; a first bolt member 33b3 that fixes the first clamping plate 33b1, the second clamping plate 33b2, and the disk 50; and a second bolt member 33b4 that fixes the second edge panel 32b1 of the upper rotor 32b to the first edge panel 31b1 of the lower rotor 31b.

[0084] In the above, the first bolt member 33b3 can couple the lower rotor 31b with the disk 50 by fixing the first clamping plate 33b1, the disk 50, and the second clamping plate 33b2, and the second bolt member 33b4 can couple the lower rotor 31b with the upper rotor 32b by fixing the first clamping plate 33b1, the first edge panel 31b1, the second clamping plate 33b2, and the second edge panel 32b1.

[0085] In addition, the coupling member 33b may further include: a first adhesive member 33b5 disposed between the first edge panel 31b1 of the lower rotor 31b and the second clamping plate 33b2; and a second adhesive member 33b6 disposed between the second edge panel 32b1 of the upper rotor 32b and the second clamping plate 33b2. Here, the first adhesive member 33b5 and the second adhesive member 33b6 can be various adhesives or adhesive films in a coating method or a laminating method.

[0086] The mounting process of the lower rotor 31b and the upper rotor 32b assembled using the coupling member 33b as described above will be described with reference to Figure 7 (a) to (d) thereof.

[0087] First, as Figure 7 (a) shown, the onshore infrastructure 10 is mounted on the deck of the ship S using the lifting device L. Here, the lifting device L can be a tower crane, a gantry crane, or any other suitable lifting means known to those skilled in the art.

[0088] As Figure 7 (b) shown, onshore, the disk 50 and the drive unit 60 are set on the upper part of the stator 20, the lower rotor 31b is lifted using the lifting device L, and the stator 20 is received inside it, and the lower rotor 31b is coupled with the disk 50 using the coupling member 33b.

[0089] As Figure 7 (c) shown, the lower rotor 31b containing the stator 20 is mounted on the onshore infrastructure 10 fixedly provided on the deck using the lifting device L.

[0090] As Figure 7As shown in (d) of , the upper rotor 32b on land is aligned with the upper part of the lower rotor 31b mounted on the infrastructure 10 by using the lifting device L, and the lower rotor 31b and the upper rotor 32b are coupled by using the coupling member 33b.

[0091] Thus, the rotor 30b of the present embodiment is composed of a two-stage assembled structure in which the lower rotor 31b and the upper rotor 32b are assembled by using the coupling member 33b. Therefore, not only can the assembly process be simplified by implementing a two-stage connection structure, but also the weight and height requirements of the crane can be improved.

[0092] The above-mentioned Figure 2 The end plate 40 shown is provided at the upper end of the opening of the rotor 30, and it can be implemented in various embodiments. Hereinafter, the end plate 40a of the first embodiment will be described with reference to Figure 8 Explain the end plate 40a of the first embodiment.

[0093] Figure 8 is for explaining Figure 2 FIG. is a view showing a first embodiment of the end plate 40 shown.

[0094] As Figure 8 shown, the end plate 40a of the first embodiment may be composed of a circular plate 41a and a reinforcing rib 42a, and may be formed of glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP).

[0095] The circular plate 41a may be divided into a central region 43a and a peripheral region 44a. The central region 43a may be a region corresponding to the upper end of the opening of the rotor 30, and the peripheral region 44a may be a region extending outward from the rotor 30, but is not limited thereto.

[0096] The central region 43a and the peripheral region 44a of the circular plate 41a may be different. For example, the central region 43a of the circular plate 41a may be 10t radial GFRP - 2AXIS, and the peripheral region 44a of the circular plate 41a may be 30t radial GFRP - UD.

[0097] The reinforcing rib 42a is used to strengthen the central region 43a of the circular plate 41a. A plurality of reinforcing ribs 42a may be formed to extend radially from the center of the circular plate 41a to the edge of the central region 43a, and may be 10t longitudinal GFRP - UD.

[0098] In the above, the fiber direction and thickness values of the circular plate 41a and the reinforcing rib 42a are only examples, and obviously various lamination patterns and thicknesses can be applied.

[0099] Accordingly, the end plate 40a of this embodiment is made of glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP), thereby being able to improve the structural performance of the lightweight wind propulsion system 1 through the end plate 40a.

[0100] The above-mentioned Figure 2 The drive unit 60 shown is disposed above the stator 20 and generates power capable of rotating the rotor 30. It can be implemented in various embodiments. Hereinafter, with reference to Figure 9 Describe the drive unit 60a of the first embodiment, with reference to Figure 10 Describe the drive unit 60b of the second embodiment, with reference to Figure 11 Describe the drive unit 60c of the third embodiment.

[0101] Figure 9 is for explaining Figure 2 FIG. showing the first embodiment of the drive unit 60.

[0102] As Figure 9 shown, the drive unit 60a of the first embodiment may include: a motor 61a, a gearbox 62a, a drive shaft 63a, a drive gear 64a, a driven gear 65a, a driven shaft 66a, and a bearing housing 67a.

[0103] The motor 61a can generate driving force and transmit it to the gearbox 62a, and can be disposed inside the stator 20.

[0104] The gearbox 62a may be internally provided with various gears combined with the motor 61a and used for transmitting the driving force required to rotate the drive shaft 63a, and can be disposed inside the stator 20. The gearbox 62a may be a speed reducer.

[0105] Inside the gearbox 62a of this embodiment, a drive shaft 63a combined with the motor 61a and rotated by the motor 61a, a drive gear 64a disposed on the drive shaft 63a, a driven gear 65a meshing and rotating with the drive gear 64a, and a driven shaft 66a combined with the driven gear 65a and supporting the rotation of the driven gear 65a may be provided.

[0106] The drive gear 64a and the driven gear 65a may be reduction gears with a reduction ratio of 6:1. Obviously, it is not limited thereto, and reduction gears with various reduction ratios may also be applied.

[0107] The driven shaft 66a may be composed of a first driven shaft 66a1 and a second driven shaft 66a2.

[0108] In this case, the first driven shaft 66a1 can be disposed inside the gearbox 62a and can be configured such that its lower portion is rotatably coupled to the bottom surface of the gearbox 62a, and its upper portion penetrates through the top surface of the gearbox 62a and protrudes outward to be coupled to the second driven shaft 66a2.

[0109] The second driven shaft 66a2 can be disposed outside the gearbox 62a and can be configured such that its lower portion is coupled to the upper portion of the first driven shaft 66a1 by a coupling member 68a, and its upper portion penetrates through the top surface of the stator 20 and is coupled to the disk 50. The second driven shaft 66a2 can be connected to the first driven shaft 66a1 and transmit a rotational force to the disk 50.

[0110] The above-described drive shaft 63a, first driven shaft 66a1, and second driven shaft 66a2 can each rotate using various bearings.

[0111] Specifically, the upper portion of the drive shaft 63a can be rotatably coupled to the top surface of the gearbox 62a using a first bearing B1, and the lower portion can be rotatably coupled to the bottom surface of the gearbox 62a using a second bearing B2.

[0112] In this embodiment, the drive shaft 63a is a shaft that rotates using the driving force of the motor 61a and is not a shaft to which a large amount of axial force is applied. Therefore, in this case, the first bearing B1 and the second bearing B2 can be bearings that can prevent the lateral force of the drive shaft 63a or the lateral vibration of the drive shaft 63a, such as self-aligning bearings.

[0113] The upper portion of the first driven shaft 66a1 can be rotatably coupled to the top surface of the gearbox 62a using a third bearing B3, and the lower portion can be rotatably coupled to the bottom surface of the gearbox 62a using a fourth bearing B4.

[0114] In this embodiment, the first driven shaft 66a1 does not directly receive the driving force from the motor 61a or directly transmit the driving force to the disk 50 and is not a shaft to which a large amount of axial force is applied. Therefore, in this case, the third bearing B3 and the fourth bearing B4 can be bearings that can prevent the lateral force of the first driven shaft 66a1, such as self-aligning bearings.

[0115] The second driven shaft 66a2 can be rotatably coupled to the top surface of the stator 20 using fifth and sixth bearings B5 and B6 arranged in series.

[0116] In the present embodiment, the second driven shaft 66a2 is a shaft that directly transmits the driving force to the disk 50, and it is a shaft to which a large amount of axial force and lateral force are applied. Therefore, in this case, the fifth bearing B5 can be a bearing capable of preventing the axial force of the second driven shaft 66a2, such as a thrust bearing, and the sixth bearing B6 can be a bearing capable of preventing the lateral force of the second driven shaft 66a2, such as an automatic aligning bearing like a spherical roller bearing (SRB).

[0117] As described above, the second driven shaft 66a2 is subjected to a large amount of axial force and lateral force. Therefore, it is difficult to firmly couple the fifth bearing B5 and the sixth bearing B6 arranged in series to the stator 20 so as to withstand the axial force and lateral force.

[0118] Accordingly, in the present embodiment, as a means for clamping the second driven shaft 66a2, the bearing housing 67a can be fixedly provided inside the top surface of the stator 20. The bearing housing 67a can be penetrated by the second driven shaft 66a2 and can accommodate the fifth bearing B5 and the sixth bearing B6. By fixedly providing the bearing housing 67a inside the top surface of the stator 20, the second driven shaft 66a2 can withstand the axial force and lateral force by using the bearing housing 67a.

[0119] Figure 10 is for explaining Figure 2 the second embodiment of the drive unit 60 shown.

[0120] As Figure 10 shown, the drive unit 60b of the second embodiment may include: a motor 61a, a gearbox 62a, a drive shaft 63a, a drive gear 64a, a driven gear 65a, a driven shaft 66a composed of a first driven shaft 66a1 and a second driven shaft 66a2, a bearing housing 67b, and a coupling member 68a.

[0121] Compared with the drive unit 60a of the above-described first embodiment, the installation position of the bearing housing 67b of the drive unit 60b of the second embodiment is different.

[0122] That is, differently, the bearing housing 67b of the present embodiment is provided outside the top surface of the stator 20, and the bearing housing 67a of the above-described first embodiment is provided inside the top surface of the stator 20, while the remaining structural elements are the same in structure.

[0123] The remaining structural elements are the same in structure as those of the first embodiment, and thus the same reference numerals are used. Accordingly, in order to avoid redundant description, the description of the same structure is omitted herein.

[0124] Figure 11 is for explaining Figure 2View of the third embodiment of the drive unit 60 shown.

[0125] As Figure 11 shown, the drive unit 60c of the third embodiment may include: a motor 61c, a gearbox 62c, a drive shaft 63c, a drive gear 64c, a driven gear 65c, and a driven shaft 66c.

[0126] The motor 61c may generate a driving force and transmit it to the gearbox 62c, and may be disposed inside the top surface of the stator 20.

[0127] The gearbox 62c may be internally provided with various gears that are combined with the motor 61c and used to transmit the driving force required to rotate the drive shaft 63c, and may be disposed outside the top surface of the stator 20. The gearbox 62c may be a speed reducer.

[0128] Inside the gearbox 62c of the present embodiment, a drive shaft 63c that is combined with the motor 61c and rotates using the motor 61c, a drive gear 64c disposed on the drive shaft 63c, a driven gear 65c that meshes with the drive gear 64c and rotates, and a driven shaft 66c that is combined with the driven gear 65c to support the rotation of the driven gear 65c and transmit the rotational force to the disk 50 may be provided.

[0129] The drive gear 64c and the driven gear 65c may be reduction gears with a reduction ratio of 6:1. Obviously, this is not limited thereto, and reduction gears with various reduction ratios may also be applied.

[0130] Each of the above-mentioned drive shaft 63c and driven shaft 66c may rotate using various bearings.

[0131] Specifically, the upper part of the drive shaft 63c may be rotatably coupled to the top surface of the gearbox 62c using a seventh bearing B7, and the lower part may be rotatably coupled to the bottom surface of the gearbox 62c using an eighth bearing B8.

[0132] In the present embodiment, the drive shaft 63c is a shaft that rotates using the driving force of the motor 61c and is not a shaft to which a large amount of axial force is applied. Therefore, in this case, the seventh bearing B7 and the eighth bearing B8 may be bearings that can prevent the lateral force of the drive shaft 63c or the lateral vibration of the drive shaft 63c, such as self-aligning bearings.

[0133] The upper part of the driven shaft 66c may be rotatably coupled to the top surface of the gearbox 62c using a ninth bearing B9, and the lower part may be rotatably coupled to the bottom surface of the gearbox 62c using a tenth bearing B10 and an eleventh bearing B11 arranged in series.

[0134] In this embodiment, the driven shaft 66c is a shaft that directly transmits the driving force to the disk 50, and it is a shaft that is subjected to a lot of axial force and lateral force. Therefore, in this case, the tenth bearing B10 can be a bearing that can prevent the axial force of the driven shaft 66c, such as a thrust bearing, and the eleventh bearing B11 can be a bearing that can prevent the lateral force of the driven shaft 66c, such as a self-aligning bearing.

[0135] In addition, the tenth bearing B10 and the eleventh bearing B11 are arranged in series on the bottom surface of the gearbox 62c on the driven shaft 66c. Therefore, the bottom surface thickness of the gearbox 62c can be made relatively thicker than other surfaces to provide the tenth bearing B10 and the eleventh bearing B11. When the bottom surface thickness of the gearbox 62c is the same as the existing thickness, of course, the bearing housing 67a of the first embodiment can also be fixedly arranged inside the gearbox 62c to provide the tenth bearing B10 and the eleventh bearing B11.

[0136] As described above, in this embodiment, the driven shaft 66c is a shaft that directly transmits the driving force to the disk 50, and it is subjected to a lot of axial force and lateral force. However, not only can the tenth bearing B10 and the eleventh bearing B11 be used to prevent the axial force and lateral force, but also the length of the driven shaft 66c itself is short. Therefore, the ninth bearing B9 can be used as a bearing that can prevent the lateral force of the driven shaft 66c, such as a self-aligning bearing.

[0137] The above Figure 2 The lower bearing portion 70 shown suppresses the lateral movement of the rotor 30 that rotates using the power of the drive portion 60, and it can be implemented in various embodiments. Hereinafter, the lower bearing portion 70a of the first embodiment will be described with reference to Figures 12 to 14 The lower bearing portion 70b of the second embodiment will be described with reference to Figures 15 to 17 The lower bearing portion 70c of the third embodiment will be described with reference to Figures 18 to 20 The lower bearing portion 70d of the fourth embodiment will be described with reference to Figures 21 to 22 The lower bearing portion 70e of the fifth embodiment will be described with reference to Figures 23 to 25 The lower bearing portion 70f of the sixth embodiment will be described with reference to Figures 26 to 27 The lower bearing portion 70f of the sixth embodiment will be described.

[0138] Figure 12 is a partial view of the wind propulsion system 1 for explaining Figure 2 the first embodiment of the lower bearing portion 70 shown, Figure 13 is a view taken along the A-A' line of Figure 12 and Figure 14 is a view taken along the B-B' line of Figure 13 and

[0139] As Figures 12 to 14 shown, the lower bearing portion 70a of the first embodiment may be composed of an aggregate of bearing units 71a and may be provided on the basic structure 10.

[0140] The bearing unit 71a may be provided on the basic structure 10 and may be composed of a guide bearing 71a1 and a bearing support base 71a2.

[0141] The guide bearing 71a1 may be provided at the upper end of the bearing support base 71a2 and may guide the rotation of the rotor 30.

[0142] The bearing support base 71a2 may support the guide bearing 71a1 provided at its upper end and may be provided on the basic structure 10.

[0143] A plurality of the above-described bearing units 71a may be arranged at predetermined intervals along the inner peripheral surface of the rotor 30 to form the lower bearing portion 70a. At this time, the guide bearing 71a1 may be in close contact with the inner peripheral surface of the rotor 30, and the bearing support base 71a2 may be provided on the basic structure 10 without overlapping the rotor 30 and the stator 20.

[0144] In this embodiment, a passage 81 may be provided between the lower bearing portion 70a and the stator 20 to facilitate the maintenance of the bearing unit 71a.

[0145] The passage 81 may be ensured by forming the stator 20 to have a smaller diameter than the existing one. For example, when the diameter of the existing stator is 4 to 4.5 m, the stator 20 of this embodiment may ensure the passage 81 by reducing the diameter to 2 to 2.5 m.

[0146] The overall diameter of the stator 20 may be reduced, but as Figure 12 shown, it is preferable that the diameter of the upper portion provided with the drive unit 60 is as large as the existing diameter to provide a space for mounting the drive unit 60 in the upper portion.

[0147] Accordingly, in the lower bearing portion 70a of this embodiment, the bearing unit 71a is easy to manufacture, the installation man-hours can be reduced by directly providing the bearing support base 71a2 on the basic structure 10, the maintenance can be easily performed by ensuring the passage 81, and the stator 20 can be lightened.

[0148] Figure 15 is a partial view of the wind propulsion system 1 for explaining the second embodiment of the lower bearing portion 70 Figure 2 shown, Figure 16 is a view taken along the cutting line A-A' of Figure 15 Figure 17 is along​Figure 16 View taken along line B-B'.

[0149] As Figures 15 to 17 shown, the lower bearing portion 70b of the second embodiment may be composed of an assembly of bearing units 71b and may be provided on the infrastructure 10.

[0150] The bearing unit 71b may be provided on the infrastructure 10 and may be composed of a guide bearing 71b1 and a bearing support base 71b2.

[0151] The guide bearing 71b1 may be provided at the upper end of the bearing support base 71b2 and may guide the rotation of the rotor 30.

[0152] The bearing support base 71b2 may support the guide bearing 71b1 provided at its upper end and may be provided on the infrastructure 10.

[0153] A plurality of the above-described bearing units 71b may be arranged at a predetermined interval along the inner circumferential surface of the rotor 30 to form the lower bearing portion 70b. At this time, the guide bearing 71b1 may be in close contact with the inner circumferential surface of the rotor 30, and the bearing support base 71b2 may be provided on the infrastructure 10 without overlapping the stator 20.

[0154] The stator 20 of the present embodiment may form open portions 82 at predetermined intervals at its lower end. By providing the bearing units 71b in the open portions 82, the bearing units 71b may be arranged to overlap the stator 20.

[0155] Accordingly, in the lower bearing portion 70b of the present embodiment, the bearing units 71b are easy to manufacture, the installation man-hours can be reduced by directly providing the bearing support base 71b2 on the infrastructure 10, and the maintenance of the bearing units 71b can be easily performed through the open portions 82.

[0156] Figure 18 is a partial view of the wind propulsion system 1 of the third embodiment for explaining the lower bearing portion 70 Figure 2 shown, and Figure 19 is a view for explaining the bearing unit 71c constituting the lower bearing portion 70c of the third embodiment. Figure 20 (a) to (c) of Figure 19 are views showing the state in which the bearing unit 71c is provided on the stator 20, where (a) is a plan view, (b) is a front view, and (c) is a rear view.

[0157] As Figures 18 to 20 shown, the lower bearing portion 70c of the third embodiment may be composed of an assembly of bearing units 71c and may be provided on the stator 20.

[0158] The bearing unit 71c can be disposed on the stator 20 and can be composed of a guiding bearing 71c1, a first joint plate 71c2, and a second joint plate 71c3. In this embodiment, the stator 20 can be provided with a window 83 at a position where the bearing unit 71c is disposed, with a predetermined interval therebetween.

[0159] The guiding bearing 71c1 can be disposed on the first joint plate 71c2 and can guide the rotation of the rotor 30.

[0160] The first joint plate 71c2 can be composed of a pair and can be joined to both ends of the bearing shaft 71c11 of the guiding bearing 71c1. The pair of first joint plates 71c2 can horizontally extend toward the side of the guiding bearing 71c1 in a state of being joined to the bearing shaft 71c11 and can have a shape that is vertically bent from the extended end portions. A plurality of first bolt holes 71c21 for bolt-joining with the second joint plate 71c3 can be provided in the pair of first joint plates 71c2.

[0161] The second joint plate 71c3 can be disposed along the edge of the window 83 inside the stator 20. In order to be joined to the pair of first joint plates 71c2, a plurality of second bolt holes 71c31 corresponding to the first bolt holes 71c21 can be provided. The second joint plate 71c3 can have a shape that protrudes at least by a size equal to or less than the radius of the guiding bearing 71c1.

[0162] The above-described bearing unit 71c can be disposed on the stator 20 by bolt-joining the first joint plate 71c2 and the second joint plate 71c3. A plurality of them are arranged at a predetermined interval from each other along the inner circumferential surface of the rotor 30 to form a lower bearing portion 70c. At this time, as Figure 20 shown in (a) to (c), in a state of being fixed by the first joint plate 71c2 and the second joint plate 71c3, a part of the guiding bearing 71c1 can protrude outward through the window 83 of the stator 20 and be in close contact with the inner circumferential surface of the rotor 30.

[0163] Accordingly, the lower bearing portion 70c of this embodiment can be easily manufactured by modularly manufacturing the bearing unit 71c, and the installation man-hours can be reduced. Moreover, by being disposed on the stator 20, the structural stability can be ensured.

[0164] Figure 21 is a partial view of the wind propulsion system 1 showing a fourth embodiment of the lower bearing portion 70 Figure 2 as shown, and Figure 22 is a view for explaining the bearing unit 71d that constitutes the lower bearing portion 70d of the fourth embodiment.

[0165] As Figures 21 to 22As shown, the lower bearing portion 70d of the fourth embodiment may be composed of an aggregate of bearing units 71d and may be provided in the stator 20.

[0166] The bearing unit 71d may be provided in the stator 20 and may be composed of a guide bearing 71d1 and a joint box 71d2. In this embodiment, the stator 20 may be provided with a window 84 at a position where the bearing unit 71d is provided, with a predetermined interval therebetween.

[0167] The guide bearing 71d1 may be provided in the joint box 71d2 and may guide the rotation of the rotor 30.

[0168] The joint box 71d2 may be provided along the edge of the window 84 inside the stator 20 to fix the guide bearing 71d1 in a state where a part of the guide bearing 71d1 protrudes to the outside. A plurality of first bolt holes 71d21 for bolt connection with the stator 20 may be provided in the joint box 71d2.

[0169] The stator 20 may be provided with a window 84 at a position where the bearing unit 71d is provided, with a predetermined interval therebetween. For bolt connection with the joint box 71d2, second bolt holes 71d22 corresponding to the first bolt holes 71d21 may be provided along the edge of the window 84.

[0170] The above-mentioned bearing unit 71d may be provided in the stator 20 by bolt connection of the joint box 71d2. A plurality of bearing units 71d may be arranged at a predetermined interval along the inner circumferential surface of the rotor 30 to form the lower bearing portion 70d. At this time, in a state where the joint box 71d2 is fixed to the stator 20, a part of the guide bearing 71d1 may protrude to the outside through the window 84 of the stator 20 and be in close contact with the inner circumferential surface of the rotor 30.

[0171] Thus, the lower bearing portion 70d of this embodiment can be easily manufactured by modularly manufacturing the bearing unit 71d, and the installation man-hour can be reduced. Moreover, by being provided in the stator 20, the structural stability can be ensured.

[0172] Figure 23 It is for explaining Figure 2 a partial view of the wind power propulsion system 1 of the fifth embodiment of the lower bearing portion 70 shown, Figure 24 is a view taken along the Figure 23 A - A' line shown, Figure 25 is a view taken along the Figure 24 B - B' line shown.

[0173] As Figures 23 to 25 shown, the lower bearing portion 70e of the fifth embodiment may be composed of a single body of a bearing unit 71e and may be provided in the stator 20.

[0174] The bearing unit 71e can be disposed on the stator 20 and can be composed of a guide bearing 71e1 and a guide rail 71e2.

[0175] The guide bearing 71e1 can be disposed along the outer peripheral surface of the stator 20 and can guide the rotation of the rotor 30.

[0176] The guide bearing 71e1 can be a single ring-shaped bearing, for example, it can be a journal type or a ball / roller type bearing.

[0177] Considering that the ring-shaped guide bearing 71e1 is the currently largest-sized bearing that can be disposed on a structure with a diameter of 2.5 m, the diameter of the stator 20 can be at least less than 2.5 m. The entire stator 20 can have a diameter of 2.5 m or less. However, as Figure 23 shown, the diameter of the upper part where the driving unit 60 is disposed can preferably be as large as the existing diameter (for example, 4 to 4.5 m) in order to provide a space for disposing the driving unit 60 in the upper part.

[0178] The guide rail 71e2 can be formed along the inner peripheral surface of the rotor 30 at a position corresponding to the ring-shaped guide bearing 71e1 and can guide the guide bearing 71e1. At this time, the guide rail 71e2 can achieve various protruding heights, and the protruding height can be determined according to the diameter of the rotor 30.

[0179] That is, when the diameter of the stator 20 is 2.5 m, the minimum diameter of the rotor 30 can correspond to the diameter of the guide bearing 71e1 disposed on the outer peripheral surface of the stator 20, and the maximum diameter of the rotor 30 can be determined according to the protruding height of the guide rail 71e2.

[0180] Generally, the larger the diameter of the rotor 30, the stronger the wind propulsion ability. Therefore, in this embodiment, even if the diameter of the rotor 30 is increased to a desired size, the function of the lower bearing portion 70e can be performed by adjusting the protruding height of the guide rail 71e2.

[0181] Such a guide rail 71e2 can be manufactured separately and disposed on the inner peripheral surface of the rotor 30, or can be manufactured integrally with the rotor 30.

[0182] Thus, the lower bearing portion 70e of this embodiment can ensure structural stability by applying a single ring-shaped bearing as the guide bearing 71e1 and disposed on the stator 20, and can change the size of the rotor 30 to the required size by adjusting the height of the guide rail 71e2, thereby being able to easily improve the wind propulsion performance.

[0183] Figure 26 is for explaining Figure 2A partial view of a wind propulsion system 1 of a sixth embodiment of a lower bearing portion 70 is shown, Figure 27 is along Figure 26 A-A' line cut diagram.

[0184] like Figures 26 to 27 As shown, the lower bearing portion 70 f of the sixth embodiment may be constituted by an assembly of bearing units 71 f and may be provided on the rotor 30 .

[0185] The bearing unit 71f may be provided on the rotor 30, and may be composed of a guide bearing 71f1, an arm 71f2, and a guide rail 71f3.

[0186] The guide bearing 71 f 1 may be provided at one side of the arm 71 f 2 , and may guide the rotation of the rotor 30 .

[0187] The arm 71f2 may be provided on the inner circumference of the rotor 30. The arm 71f2 may be of a variable length, foldable or fixed type. When the arm 71f2 is of a variable length, the length may be manually adjusted like a telescope or a tent pole.

[0188] The guide rail 71f3 may be formed along the outer circumferential surface of the stator 20 and may guide the guide bearing 71f1. At this time, the guide rail 71f3 may realize various protrusion heights, and the protrusion height may be determined according to the diameter of the stator 20 or the rotor 30.

[0189] For example, when the diameter of the stator 20 is changed while the diameter of the rotor 30 is determined, the function of the lower bearing portion 70f can be performed by adjusting the protruding height of the guide rail 71f3 according to the changed diameter. In addition, the same is true when the diameter of the rotor 30 is changed while the diameter of the stator 20 is determined.

[0190] Such a guide rail 71f3 may be manufactured separately and provided on the outer peripheral surface of the stator 20, or may be manufactured integrally with the stator 20.

[0191] Therefore, the lower bearing portion 70f of the present embodiment can manufacture the size of the rotor 30 or the stator 20 to a desired size by adjusting the height of the guide rail 71f3, thereby easily improving the wind propulsion performance.

[0192] As described above, the wind propulsion system 1 of the present invention refers to Figures 3 to 27 Through various embodiments Figure 2 The stator 20, rotor 30, end plate 40, disc 50, drive portion 60, and lower bearing portion 70 shown are described separately, but are not limited to embodiments of each structure, and may include a combination of the above embodiments or a combination of at least one of the above embodiments and a known technology as another embodiment.

[0193] As mentioned above, the present invention has been described centering around the embodiments of the present invention, but this is only an example and does not limit the present invention. Those of ordinary skill in the art to which the present invention pertains will understand that various combinations, deformations, and applications not shown in the embodiments can be implemented without departing from the essential technical content of the embodiments. Therefore, the technical content related to the deformations and applications that can be easily derived from the embodiments of the present invention should be construed as being included in the present invention.

[0194] Description of Reference Numerals

[0195] 1: Wind propulsion system 10: Infrastructure

[0196] 20: Stator 30, 30a, 30b: Rotor

[0197] 31a: Unit panel 31a1: Curved panel

[0198] 31a2: Female connector 31a21: First plate

[0199] 31a22: Second plate 31a23: Third plate

[0200] 31a21: Fourth plate 31a3: Male connector

[0201] 31a31: Fifth plate 31a32: Sixth plate

[0202] 31a4: Insertion space 31b: Lower rotor

[0203] 31b1: First edge panel 32b: Upper rotor

[0204] 32b1: Second edge panel 33b: Coupling member

[0205] 33b1: First clamping plate 33b2: Second clamping plate

[0206] 33b3: First bolt member 33b4: Second bolt member

[0207] 33b5: First adhesive member 33b6: Second adhesive member

[0208] 40, 40a: End plate 41a: Circular plate

[0209] 42a: Reinforcing rib 43a: Central region

[0210] 44a: Peripheral region 50: Disk

[0211] 60, 60a, 60b, 60c: Driving part 61a, 61c: Motor

[0212] 62a, 62c: Gearbox 63a, 63c: Drive shaft

[0213] 64a, 64c: Driving gears 65a, 65c: Driven gears

[0214] 66a, 66c: Driven shafts 66a1: First driven shaft

[0215] 66a2: Second driven shaft 67a, 67b: Bearing housings

[0216] 68a: Coupling member

[0217] 70, 70a, 70b, 70c, 70d, 70e, 70f: Lower bearing parts

[0218] 71a, 71b, 71c, 71d, 71e, 71f: Bearing units

[0219] 71a1, 71b1, 71c1, 71d1, 71e1, 71f1: Guide bearings

[0220] 71c11: Bearing shaft 71a2, 71b2: Bearing support platforms

[0221] 71c2: First joint plate 71c21: First bolt hole

[0222] 71c3: Second joint plate 71c31: Second bolt hole

[0223] 71d2: Junction box 71d21: First bolt hole

[0224] 71d22: Second bolt hole 71e2: Guide rail

[0225] 71f2: Arm 71f3: Guide rail

[0226] 81: Passageway 82: Open part

[0227] 83, 84: Windows B1 to B11: First bearing to Eleventh bearing

[0228] S: Ship L: Hoisting device

Claims

1. A wind propulsion system, Among them, including: a stator, vertically arranged on the deck; a rotor, configured in a cylindrical shape surrounding the outside of the stator; a driving part, transmitting rotational power to the rotor through a disc connected to the rotor; and a lower bearing part, arranged at the lower part of the rotor to suppress the lateral movement of the rotor, the driving part includes: a gearbox, which has a driving shaft rotated by a motor, a driving gear arranged on the driving shaft, a driven gear meshing and rotating with the driving gear, and a first driven shaft combined with the driven gear and supporting the rotation of the driven gear, and is arranged inside the stator; and a bearing housing, connected to the first driven shaft by a coupling member, clamping a second driven shaft for transmitting rotational force to the disc, the rotor includes: a lower rotor, having a ring-shaped first edge panel extending inward by a predetermined length at the upper end and having a space for accommodating the disc; an upper rotor, having a ring-shaped second edge panel extending inward by a predetermined length at the lower end and having a space for accommodating the disc; and a coupling member, coupling the lower rotor, the upper rotor and the disc, the coupling member includes: a first clamping plate, clamping the bottom surface of the first edge panel and the bottom surface of the disc; a second clamping plate, clamping the top surface of the first edge panel and the top surface of the disc; a first bolt member, fixing the first clamping plate, the second clamping plate and the disc; and a second bolt member, fixing the first edge panel and the second edge panel.

2. The wind propulsion system according to claim 1, wherein, the bearing housing is arranged inside the top surface of the stator or outside the top surface of the stator.

3. The wind propulsion system according to claim 1, wherein, the upper part of the driving shaft is rotatably coupled to the top surface of the gearbox by a first bearing, the lower part of the driving shaft is rotatably coupled to the bottom surface of the gearbox by a second bearing, the first bearing and the second bearing are bearings for preventing the transverse force or transverse vibration of the driving shaft.

4. The wind propulsion system according to claim 1, wherein, the upper part of the first driven shaft is rotatably coupled to the top surface of the gearbox by a third bearing, the lower part of the first driven shaft is rotatably coupled to the bottom surface of the gearbox by a fourth bearing, the third bearing and the fourth bearing are bearings for preventing the transverse force of the first driven shaft.

5. The wind propulsion system according to claim 1, wherein, the second driven shaft is rotatably coupled to the top surface of the stator by a fifth bearing and a sixth bearing arranged in series, the fifth bearing is a bearing for preventing the axial force of the second driven shaft, the sixth bearing is a bearing for preventing the transverse force of the second driven shaft.

6. The wind propulsion system according to claim 1, wherein, the coupling member further includes: a first bonding member, arranged between the first edge panel and the second clamping plate; and a second bonding member, arranged between the second edge panel and the second clamping plate.

7. The wind propulsion system according to claim 1, wherein a lifting device is used to carry the infrastructure on land onto the deck, the disk and the driving part are arranged on the upper part of the stator on land, the lower rotor is lifted by the lifting device and the stator is accommodated inside the lower rotor, the lower rotor is coupled to the disk by the coupling member, the lower rotor accommodating the stator is carried onto the infrastructure by the lifting device, the upper rotor on land is aligned with the upper part of the lower rotor carried onto the infrastructure by the lifting device, the lower rotor is coupled to the upper rotor by the coupling member.

8. A ship having the wind propulsion system according to any one of claims 1 to 7.

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