Wind propulsion system and ship equipped with same

Abstract

The present invention relates to a wind propulsion system and a ship equipped with the same. The wind propulsion system of the present invention includes a stator installed vertically on a deck, a rotor installed in a cylindrical shape so as to cover the outside of the stator, a drive unit that transmits rotational power to the rotor via a disk connected to the rotor, and a lower bearing unit that is installed under the rotor and suppresses lateral movement of the rotor. The lower bearing unit is made up of an assembly of bearing units, at least a portion of which is installed along the edge of a window installed at a regular interval inside the stator at a position where the bearing unit is installed, and may include a joint unit that supports a guide bearing that guides the rotation of the rotor on the stator.

Description

[Technical field]

[0001] The present invention relates to a wind propulsion system and a ship equipped with the same. [Background technology]

[0002] Ships are usually propelled by fossil fuels. They are equipped with high-power engines to drive thrusters, and it is known that large ships consume hundreds of tons of fuel during long-distance navigation. Operating these ships requires huge costs, and the emission of pollutants due to fuel consumption is also a very serious problem.

[0003] To solve these problems, it is desirable to diversify the power sources of ships. For example, electric propulsion ship technology that obtains part of the propulsion power from an electric motor has been developed and applied, and other technologies that obtain electricity by utilizing the various environmental conditions that ships experience at sea have also been developed.

[0004] Furthermore, the use of solar and wind power, which are natural energies that do not produce any exhaust, is also attracting attention. Wind power in particular has the advantage of being simple in structure and low in maintenance costs, as wind power can be easily converted into propulsion by installing equipment such as sails on the deck.

[0005] Recently, rotor equipment (e.g., Magnus rotor) that can convert wind power into propulsion in the desired direction by rotating directly using power, unlike commonly known sails, has been installed on actual ships. This type of rotor equipment consists of a stator fixed to the deck and a cylindrical rotor that covers the surface and upper surface of the stator and whose rotation speed and direction can be adjusted.

[0006] Unlike sails, rotor equipment can process wind power into the desired propulsive force, and thus has been the subject of much research and development in recent years. However, because rotor equipment is a large column with a diameter of several meters and a height of several tens of meters, there are still many problems to be solved or improved in terms of installation on the deck, durability due to the movement of the ship, interference with the forward view, control, etc. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been created to solve the problems of the prior art as described above, and an object of the present invention is to provide a wind propulsion system and a ship equipped with the same, which improves the structural performance of the rotor and makes it easier to manufacture, ensures the structural stability of the drive unit that drives the rotor, ensures the structural stability of the lower bearing unit installed between the rotor and the stator, and facilitates maintenance, and ensures structural stability by reducing the weight of the end plates. [Means for solving the problem]

[0008] A wind propulsion system according to one aspect of the present invention includes a stator installed vertically on a deck, a rotor installed in a cylindrical shape to cover the outside of the stator, a drive unit that transmits rotational power to the rotor via a disk connected to the rotor, and a lower bearing unit installed under the rotor to suppress lateral movement of the rotor, wherein the lower bearing unit is made of an assembly of bearing units, at least a portion of which is installed along the edge of a window installed at a regular interval inside the stator at a position where the bearing unit is installed, and may include a joint unit that supports a guide bearing that guides the rotation of the rotor on the stator.

[0009] Specifically, the joint part may be a pair, including a first joint plate coupled to both ends of the bearing shaft of the guide bearing, and a second joint plate provided along the edge of the window inside the stator and coupled to the first joint plate.

[0010] Specifically, the first joint plate may extend horizontally to one side of the guide bearing when coupled to the bearing shaft, and may have a shape bent vertically at an extended end, and may be provided with a plurality of first bolt holes for bolt coupling to the second joint plate. The second joint plate may have a protruding shape having at least a radius of the guide bearing or less, and may be provided with a plurality of second bolt holes corresponding to the first bolt holes.

[0011] Specifically, the joint portion may include a joint box provided along an edge of the window inside the stator and fixing the guide bearing with a portion of the guide bearing protruding to the outside.

[0012] Specifically, the driving unit may include a gear box provided inside the stator incorporating a drive shaft rotated by a motor, a drive gear provided on the drive shaft, a driven gear rotating in mesh with the drive gear, and a first driven shaft coupled to the driven gear to support the rotation of the driven gear, and a bearing housing connected to the first driven shaft by a coupling member and supporting a second driven shaft for transmitting rotational force to the disk.

[0013] Specifically, the bearing housing may be provided on the inside of the upper surface of the stator, or on the outside of the upper surface of the stator.

[0014] Specifically, the drive shaft may have an upper portion rotatably connected to an upper surface of the gear box by a first bearing, and a lower portion rotatably connected to a lower surface of the gear box by a second bearing, and the first and second bearings may be bearings that can prevent lateral force or lateral movement of the drive shaft.

[0015] Specifically, the first driven shaft may have an upper portion rotatably connected to an upper surface of the gear box by a third bearing, and a lower portion rotatably connected to a lower surface of the gear box by a fourth bearing, and the third and fourth bearings may be bearings that can prevent lateral force of the first driven shaft.

[0016] Specifically, the second driven shaft may be rotatably coupled to an upper surface of the stator by a fifth bearing and a sixth bearing arranged in series, the fifth bearing being a bearing capable of preventing an axial force of the second driven shaft, and the sixth bearing being a bearing capable of preventing a lateral force of the second driven shaft.

[0017] Specifically, the rotor may include a lower rotor having a ring-shaped first edge panel at an upper end, extending inwardly to a certain length and having a space for accommodating the disk, an upper rotor having a ring-shaped second edge panel at a lower end, extending inwardly to a certain length and having a space for accommodating the disk, and a connecting member connecting the lower rotor, the upper rotor, and the disk.

[0018] Specifically, the connecting member may include a first clamp plate supporting a lower surface of the first edge panel and a lower surface of the disk, a second clamp plate supporting an upper surface of the first edge panel and an upper surface of the disk, a first bolt member fixing the first and second clamp plates to the disk, and a second bolt member fixing the first edge panel to the second edge panel.

[0019] Specifically, the connecting member may further include a first bonding member provided between the first edge panel and the second clamp plate, and a second bonding member provided between the second edge panel and the second clamp plate.

[0020] Specifically, the foundation on land may be mounted on the deck using a lifting device, the disk and the drive unit may be installed on top of the stator on land, the lower rotor may be lifted by the lifting device to accommodate the stator therein, the lower rotor and the disk may be coupled together using the coupling member, the lower rotor with the stator accommodated therein may be mounted on the foundation using the lifting device, the upper rotor on land may be aligned with an upper portion of the lower rotor mounted on the foundation using the lifting device, and the lower rotor and the upper rotor may be coupled together using the coupling member.

[0021] A marine vessel according to another aspect of the invention may include a wind propulsion system as described above. Effect of the Invention

[0022] The wind propulsion system according to the present invention improves the structural performance of the rotor and makes it easier to manufacture, ensures the structural stability of the driving part that drives the rotor, ensures the structural stability of the lower bearing part installed between the rotor and the stator and makes it easier to maintain it, and ensures structural stability by reducing the weight of the end plates. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 shows a watercraft equipped with a wind propulsion system according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a diagram illustrating a wind propulsion system according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a diagram for explaining a first embodiment of the rotor shown in FIG. 2. [Figure 4] FIG. 2 is a diagram for explaining a unit panel that constitutes the rotor of the first embodiment. [Diagram 5] 3 is a diagram for explaining a second embodiment of the rotor shown in FIG. 2. FIG. [Figure 6] 13 is a diagram for explaining a connecting member that connects a lower rotor and an upper rotor that constitute a rotor of the second embodiment. FIG. [Figure 7] 13(a) to 13(d) are diagrams illustrating a rotor mounting process according to the second embodiment. [Figure 8] FIG. 3 is a view for explaining a first embodiment of the end plate shown in FIG. 2. [Figure 9] 3 is a diagram for explaining a first embodiment of the drive unit shown in FIG. 2. FIG. [Figure 10] 3 is a diagram for explaining a second embodiment of the drive unit shown in FIG. 2. FIG. [Figure 11] 3 is a diagram for explaining a third embodiment of the drive unit shown in FIG. 2. FIG. [Figure 12] FIG. 3 is a partial view of a wind propulsion system for explaining a first embodiment of a lower bearing portion shown in FIG. 2. [Figure 13] 13 is a cross-sectional view taken along line AA' in FIG. 12. [Figure 14] 14 is a cross-sectional view taken along line BB' in FIG. 13. [Figure 15] FIG. 3 is a partial view of a wind propulsion system for explaining a second embodiment of the lower bearing portion shown in FIG. 2. [Figure 16] 16 is a cross-sectional view taken along line AA' in FIG. 15. [Figure 17] 17 is a cross-sectional view taken along line BB' in FIG. 16. [Figure 18] FIG. 3 is a partial view of a wind propulsion system for explaining a third embodiment of the lower bearing portion shown in FIG. 2. [Figure 19] 13 is a diagram for explaining a bearing unit that constitutes a lower bearing portion of a third embodiment. FIG. [Figure 20] 20(a) to 20(c) are diagrams showing a state in which the bearing unit of FIG. 19 is mounted on a stator. [Figure 21]FIG. 3 is a partial view of a wind propulsion system for explaining a fourth embodiment of the lower bearing portion shown in FIG. 2. [Figure 22] 13 is a diagram for explaining a bearing unit that constitutes a lower bearing portion of the fourth embodiment. FIG. [Diagram 23] FIG. 11 is a partial view of a wind propulsion system for explaining a fifth embodiment of the lower bearing portion shown in FIG. 2. [Figure 24] 24 is a cross-sectional view taken along line AA' in FIG. 23. [Diagram 25] 25 is a cross-sectional view taken along line BB' in FIG. 24. [Figure 26] FIG. 11 is a partial view of a wind propulsion system for explaining a sixth embodiment of the lower bearing portion shown in FIG. 2. [Figure 27] 27 is a cross-sectional view taken along line AA' in FIG. 26. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The object, particular advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings. Note that in this specification, when referring to the components in each drawing, the same components are referred to by the same numbers as much as possible even if they are displayed in different drawings. In addition, when describing the present invention, if it is determined that a detailed description of related publicly known technology unnecessarily obscures the gist of the present invention, the detailed description will be omitted.

[0025] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0026] FIG. 1 is a diagram showing a ship S equipped with a wind propulsion system 1 according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining the wind propulsion system 1 according to an embodiment of the present invention.

[0027] As shown in Figures 1 and 2, a wind propulsion system 1 according to one embodiment of the present invention is installed on at least one deck of a ship S, and can convert wind power into propulsion power in a desired direction while directly rotating using power, and may include a foundation structure 10, a stator 20, a rotor 30, an end plate 40, a disk 50, a drive unit 60, and a lower bearing unit 70.

[0028] The foundation structure 10 is fixedly installed on the deck, and a stator 20 may be provided on the upper part.

[0029] The stator 20 may be mounted vertically on a substructure 10 that is fixed on the deck and may form the axis of the rotor 30 .

[0030] Such a stator 20 may be a cylindrical structure with an empty interior, and the driving unit 60 may be mounted on the upper portion.

[0031] The rotor 30 is a cylindrical structure that covers the outside of the stator 20, and can rotate 360 ​​degrees around the stator 20 that is installed / fixed on the deck of the ship S as an axis when power is applied by the drive unit 60. At this time, due to hydrodynamic interference between the wind around the ship S and the cylindrical rotor 30, the wind can be switched to propulsion force for the ship S.

[0032] That is, the rotor 30 can rotate by transmitting the power of the driving unit 60 through the disk 50. At this time, while the rotor 30 rotates based on the stator 20, which is a vertical central axis, an increased pressure is generated on one side and a decreased pressure / suction is generated on the other side, so that a positive pressure and a negative pressure are generated on one side and the other side of the rotor 30, respectively, and a propulsive force that moves the ship 100 can be generated.

[0033] In addition, since the direction in which positive pressure and negative pressure are generated may differ depending on the direction of the rotor 30, the navigation direction of the ship S can be controlled by changing the direction of the rotor 30 to rotate clockwise or counterclockwise.

[0034] It goes without saying that the ship of this embodiment is not limited to a ship in which propulsive force is generated by driving the rotor 30, and may be combined with the conventional embodiment. For example, when the ship S is mainly operated by a main engine (not shown) and a rudder, the rotor 30 may play an auxiliary role. Alternatively, the operation of the rotor 30 may be performed mainly, and the operation of the ship S by the main engine and the rudder may play an auxiliary role, and the drive of the rotor 30 may be performed as needed in various situations.

[0035] The rotor 30 may be rotatably connected to a lower bearing unit 70 provided at the bottom, and may be connected to a disk 50 that receives power from a driving unit 60 provided at the top of the stator 20 to provide a rotational force.

[0036] Such a rotor 30 may have an open upper end, and an end plate 40 may be provided in the open portion.

[0037] The disk 50 may have a shape corresponding to the inner peripheral surface of the rotor 30, for example, a disk shape, and the outer peripheral surface may be fixedly connected to the inner peripheral surface of the rotor 30. Such a disk 50 is connected to a driving unit 60 and can apply a rotational force to the rotor 30 by receiving the power of the driving unit 60.

[0038] The driving unit 60 may be provided on the upper part of the stator 20 and connected to the disks 50. The driving unit 60 may generate power capable of rotating the rotor 30 and transmit the rotational force to the rotor 30 via the disks 50.

[0039] The lower bearing unit 70 may be provided on the lower part of the rotor 30. The lower bearing unit 70 may be configured to suppress lateral movement when the rotor 30 rotates by the power of the driving unit 60.

[0040] As described above, the wind propulsion system 1 of this embodiment includes the stator 20, the rotor 30, the end plate 40, the disk 50, the drive unit 60, and the lower bearing unit 70. Below, each component of the wind propulsion system 1 will be described in detail with reference to Figures 3 to 27.

[0041] The rotor 30 shown in FIG. 2 is a cylindrical structure with an open interior and can be embodied in various embodiments. Below, a first embodiment of the rotor 30a will be described with reference to FIGS. 3 and 4, and a second embodiment of the rotor 30a will be described with reference to FIGS. 5 to 7.

[0042] FIG. 3 is a diagram for explaining a first embodiment of the rotor 30 shown in FIG. 2, and FIG. 4 is a diagram for explaining a unit panel 31a constituting the rotor 30a of the first embodiment.

[0043] As shown in FIGS. 3 and 4, the rotor 30a of the first embodiment may be configured by combining a plurality of unit panels 31a.

[0044] The unit panel 31a may be formed by pultrusion molding using glass fiber, carbon fiber, or various composite materials to have a certain width, length, and thickness.

[0045] The unit panel 31a may be configured so as to be able to be joined to another adjacent unit panel 31a by a tight fit.

[0046] As shown in Fig. 4, the unit panel 31a may be composed of a curved plate 31a1 having a curved shape in the width direction and extending in the longitudinal direction, a female connector 31a2 provided along one edge of the curved plate 31a1, and a male connector 31a3 provided along the other edge of the curved plate 31a1. The thicknesses of the curved plate 31a1, the female connector 31a2, and the male connector 31a3 constituting the unit panel 31a may be the same or similar.

[0047] The curved plate 31a1 may have a curved surface that corresponds to the radius of the rotor 30a.

[0048] The female connector 31a2 and the male connector 31a3 can have various structures that enable adjacent unit panels 31a to be joined together by a tight fit.

[0049] For example, female connector 31a2 may include a first plate 31a21 extending from one end of curved plate 31a1 by being bent inward of rotor 30a, a second plate 31a22 extending from the extended end of first plate 31a21 by being bent inward of curved plate 31a1, a third plate 31a23 extending from the extended end of second plate 31a22 by being bent inward of rotor 30a, and a fourth plate 31a24 extending from the extended end of third plate 31a23 by being bent inward of curved plate 31a1, and an "L" shaped mating space 31a4 corresponding to the shape of male connector 31a3 can be formed by first to fourth plates 31a24. In this case, the male connector 31a3 may comprise a fifth plate 31a31 which is bent and extends from the other end of the curved plate 31a1 inwardly of the rotor 30a so as to correspond to the "L"-shaped mating space 31a4 of the female connector 31a2, and a sixth plate 31a32 which is bent and extends from the extended end of the fifth plate 31a31 inwardly of the curved plate 31a1.

[0050] Therefore, the rotor 30a of this embodiment can be formed into a cylindrical shape with an open interior by a press-fit connection method using the unit panel 31a configured as described above, which simplifies the connection process compared to adhesive connection methods or bolting connection methods.

[0051] In addition, in the rotor 30a of this embodiment, the unit panels 31a are manufactured by pultrusion molding using glass fiber, carbon fiber, or various composite materials, which not only reduces the manufacturing cost by simplifying the manufacturing process but also makes the rotor lighter.

[0052] In addition, in the rotor 30a of this embodiment, the press-fit joint portion between the female connector 31a2 and the male connector 31a3 is thicker than the curved plate 31a1, and naturally acts as a reinforcement in the longitudinal direction, which is more economical than the conventional sandwich manufacturing method in which resin or the like is injected into the inside for reinforcement.

[0053] FIG. 5 is a diagram for explaining a second embodiment of the rotor 30 shown in FIG. 2, FIG. 6 is a diagram for explaining a connecting member 33b that connects the lower rotor 31b and the upper rotor 32b that constitute the rotor 30b of the second embodiment, and FIGS. 7(a) to (d) are diagrams for explaining the mounting process of the rotor 30b of the second embodiment.

[0054] As shown in FIGS. 5 to 7, a rotor 30b of the second embodiment may have a two-stage assembly structure in which a lower rotor 31b and an upper rotor 32b are assembled by a connecting member 33b.

[0055] The lower rotor 31b and the upper rotor 32b may each be a cylindrical structure having an empty interior, and may be formed of the same material and with the same shape.

[0056] The lower rotor 31b may be formed to a size capable of housing the stator 20, the disks 50, the driving part 60, and the lower bearing part 70 therein.

[0057] A ring-shaped first edge panel 31b1 extending inward to a certain length and having a space for accommodating the disk 50 may be provided at the upper end of the lower rotor 31b, and a ring-shaped second edge panel 32b1 extending inward to a certain length and having a space for accommodating the disk 50 may be provided at the lower end of the upper rotor 32b.

[0058] The connecting member 33b can accommodate the stator 20, having a disk 50 and a driving unit 60 on the upper part, inside the lower rotor 31b, and can connect the lower rotor 31b and the disk 50 while aligning the first edge panel 31b1 and the disk 50, and can connect the first edge panel 31b1 of the lower rotor 31b and the second edge panel 32b1 of the upper rotor 32b while the lower rotor 31b and the disk 50 are connected.

[0059] Specifically, the connecting member 33b may include a first clamp plate 33b1 that supports the lower surface of the first edge panel 31b1 and the lower surface of the disc 50, a second clamp plate 33b2 that supports the upper surface of the first edge panel 31b1 and the upper surface of the disc 50, a first bolt member 33b3 that fixes the first and second clamp plates 33b1, 33b2 to the disc 50, and a second bolt member 33b4 that fixes the second edge panel 32b1 of the upper rotor 32b onto the first edge panel 31b1 of the lower rotor 31b.

[0060] In the above, the first bolt member 33b3 can fix the first clamp plate 33b1, the disk 50, and the second clamp plate 33b2 to connect the lower rotor 31b and the disk 50, and the second bolt member 33b4 can fix the first clamp plate 33b1, the first edge panel 31b1, the second clamp plate 33b2, and the second edge panel 32b1 to connect the lower rotor 31b and the upper rotor 32b.

[0061] The joining member 33b may further include a first bonding member 33b5 provided between the first edge panel 31b1 of the lower rotor 31b and the second clamp plate 33b2, and a second bonding member 33b6 provided between the second edge panel 32b1 of the upper rotor 32b and the second clamp plate 33b2. Here, the first and second bonding members 33b5 and 33b6 may be various adhesives or adhesive films that are applied or attached.

[0062] The process of mounting the lower rotor 31b and the upper rotor 32b, which are assembled using the connecting member 33b as described above, will be described with reference to FIGS. 7(a) to 7(d).

[0063] First, as shown in Fig. 7(a), the land-based foundation structure 10 is loaded onto the deck of the ship S using a lifting device L. Here, the lifting device L may be a tower crane, a gantry crane, or any suitable lifting means known to those skilled in the art.

[0064] As shown in (b) of FIG. 7, the disk 50 and the driving unit 60 are installed on the top of the stator 20 on land, the lower rotor 31b is lifted by the lifting device L to accommodate the stator 20 inside, and the lower rotor 31b and the disk 50 are connected using the connecting member 33b.

[0065] As shown in FIG. 7(c), the lower rotor 31b housing the stator 20 is mounted by using a lifting device L onto the foundation 10 fixedly installed on the deck.

[0066] As shown in FIG. 7(d), the upper rotor 32b on land is aligned to the top of the lower rotor 31b mounted on the foundation 10 using a lifting device L, and the lower rotor 31b and the upper rotor 32b are connected using a connecting member 33b.

[0067] As a result, the rotor 30b of this embodiment is configured as a two-stage assembly structure in which the lower rotor 31b and the upper rotor 32b are assembled by the connecting member 33b, thereby not only simplifying the assembly process by realizing a two-stage connection structure, but also improving the weight and height requirements of the crane.

[0068] The end plate 40 shown in FIG. 2 is provided at the open upper end of the rotor 30 and can be embodied in various embodiments. Hereinafter, the end plate 40a of the first embodiment will be described with reference to FIG. 8.

[0069] FIG. 8 is a view for explaining a first embodiment of the end plate 40 shown in FIG.

[0070] As shown in FIG. 8, the end plate 40a of the first embodiment may be composed of a disk 41a and a stiffener 42a, and may be made of glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP).

[0071] The disk 41a may be divided into a central region 43a and an outer region 44a. The central region 43a may be a region corresponding to the open upper end of the rotor 30, and the outer region 44a may be a region extending to the outside of the rotor 30, but is not limited thereto.

[0072] The central region 43a and the outer region 44a of the disk 41a do not have to be identical. For example, the central region 43a of the disk 41a may be radial GFRP-2AXIS 10t and the outer region 44a of the disk 41a may be radial GFRP-UD 30t.

[0073] The stiffener 42a is for reinforcing the central region 43a of the disk 41a, and a plurality of stiffeners may be formed extending radially from the center of the disk 41a to the edge of the central region 43a. The stiffener may be GFRP-UD 10t in the longitudinal direction.

[0074] In the above, the fiber directions and thickness values ​​of the disks 41a and stiffeners 42a are merely examples, and it goes without saying that various lamination patterns and thicknesses can be applied.

[0075] As a result, by manufacturing the end plate 40a of this embodiment from glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP), the structural performance of the wind propulsion system 1 can be improved by reducing the weight of the end plate 40a.

[0076] The driving unit 60 shown in FIG. 2 is provided on the upper part of the stator 20 to generate power capable of rotating the rotor 30, and can be embodied in various embodiments. Hereinafter, the driving unit 60a of the first embodiment will be described with reference to FIG. 9, the driving unit 60b of the second embodiment will be described with reference to FIG. 10, and the driving unit 60c of the third embodiment will be described with reference to FIG. 11.

[0077] FIG. 9 is a diagram for explaining a first embodiment of the driving unit 60 shown in FIG.

[0078] As shown in FIG. 9, the drive section 60a of the first embodiment may include a motor 61a, a gear box 62a, a drive shaft 63a, a drive gear 64a, a driven gear 65a, a driven shaft 66a, and a bearing housing 67a.

[0079] The motor 61 a generates and transmits a driving force to the gear box 62 a and may be provided inside the stator 20 .

[0080] The gear box 62a is coupled to the motor 61a, and has various gears built therein for transmitting the driving force required to rotate the drive shaft 63a, and may be provided inside the stator 20. The gear box 62a may be a reducer.

[0081] In this embodiment, the gear box 62a may be provided inside with a drive shaft 63a connected to the motor 61a and rotated by the motor 61a, a drive gear 64a provided on the drive shaft 63a, a driven gear 65a that rotates in mesh with the drive gear 64a, and a driven shaft 66a connected to the driven gear 65a and supporting the rotation of the driven gear 65a.

[0082] The drive gear 64a and the driven gear 65a may be reduction gears with a reduction ratio of 6:1, but it goes without saying that the present invention is not limited to this and reduction gears with various reduction ratios can be used.

[0083] The driven shaft 66a may be comprised of a first driven shaft 66a1 and a second driven shaft 66a2.

[0084] In this case, the first driven shaft 66a1 may be provided inside the gear box 62a, with its lower portion rotatably connected to the lower surface of the gear box 62a, and its upper portion penetrating the upper surface of the gear box 62a and protruding to the outside to be connected to the second driven shaft 66a2.

[0085] The second driven shaft 66a2 may be provided outside the gear box 62a, with a lower portion coupled to an upper portion of the first driven shaft 66a1 by a coupling member 68a, and an upper portion penetrating an upper surface of the stator 20 and coupled to the disks 50. The second driven shaft 66a2 is connected to the first driven shaft 66a1 to transmit a rotational force to the disks 50.

[0086] The drive shaft 63a, the first driven shaft 66a1, and the second driven shaft 66a2 can each rotate by various bearings.

[0087] Specifically, the drive shaft 63a may have an upper portion rotatably coupled to an upper surface of the gear box 62a by a first bearing B1, and a lower portion rotatably coupled to a lower surface of the gear box 62a by a second bearing B2.

[0088] In this embodiment, the drive shaft 63a is a shaft that rotates by the driving force of the motor 61a and is not a shaft that is subjected to a large axial force. In this case, the first and second bearings B1 and B2 can be bearings that can prevent the lateral force of the drive shaft 63a or the lateral movement of the drive shaft 63a, for example, self-aligning bearings.

[0089] The first driven shaft 66a1 may have an upper portion rotatably coupled to an upper surface of the gear box 62a by a third bearing B3, and a lower portion rotatably coupled to a lower surface of the gear box 62a by a fourth bearing B4.

[0090] In this embodiment, the first driven shaft 66a1 is not a shaft to which driving force is directly transmitted from the motor 61a or to the disk 50, and is not a shaft to which a large axial force is applied. In this case, the third and fourth bearings B3 and B4 can be bearings that can prevent lateral force of the first driven shaft 66a1, for example, self-aligning bearings.

[0091] The second driven shaft 66a2 may be rotatably coupled to the upper surface of the stator 20 by a fifth bearing B5 and a sixth bearing B6 arranged in series.

[0092] In this embodiment, the second driven shaft 66a2 is a shaft that directly transmits driving force to the disk 50, and is not a shaft that is subjected to a large amount of axial force and lateral force. In this case, the fifth bearing B5 may be a bearing that can prevent the axial force of the second driven shaft 66a2, for example, a thrust bearing, and the sixth bearing B6 may be a bearing that can prevent the lateral force of the second driven shaft 66a2, for example, a self-aligning bearing such as a spherical roller bearing (SRB).

[0093] As described above, the second driven shaft 66a2 is subjected to a large amount of axial and lateral forces, and therefore it is difficult to firmly connect the fifth bearing B5 and the sixth bearing B6 arranged in series to the stator 20 so that they can withstand the axial and lateral forces.

[0094] For this reason, in this embodiment, a bearing housing 67a can be fixedly installed on the inside of the upper surface of the stator 20 as a means for supporting the second driven shaft 66a2. The second driven shaft 66a2 passes through the bearing housing 67a, and the fifth and sixth bearings B5 and B6 can be accommodated therein. By fixing the bearing housing 67a on the inside of the upper surface of the stator 20, the bearing housing 67a allows the second driven shaft 66a2 to withstand axial and lateral forces.

[0095] FIG. 10 is a diagram for explaining a second embodiment of the driving unit 60 shown in FIG.

[0096] As shown in FIG. 10, the drive unit 60b of the second embodiment may include a motor 61a, a gear box 62a, a drive shaft 63a, a drive gear 64a, a driven gear 65a, a driven shaft 66a consisting of first and second driven shafts 66a1 and 66a2, a bearing housing 67b, and a coupling member 68a.

[0097] The driving section 60b of the second embodiment is different from the driving section 60a of the first embodiment in the installation position of the bearing housing 67b.

[0098] That is, the bearing housing 67b of this embodiment is provided on the outer top surface of the stator 20, while the bearing housing 67a of the first embodiment described above is provided on the inner top surface of the stator 20; the other components are structurally the same.

[0099] The other components are structurally the same as those in the first embodiment, and therefore the same reference numerals are used, and therefore, to avoid duplication, the description of the same components will be omitted here.

[0100] FIG. 11 is a diagram for explaining a third embodiment of the driving unit 60 shown in FIG.

[0101] As shown in FIG. 11, a third embodiment drive section 60c may include a motor 61c, a gear box 62c, a drive shaft 63c, a drive gear 64c, a driven gear 65c, and a driven shaft 66c.

[0102] The motor 61c generates a driving force and transmits it to the gear box 62c, and may be provided on the inside of the upper surface of the stator 20.

[0103] The gear box 62c is coupled to the motor 61c, has various gears built therein for transmitting the driving force required to rotate the drive shaft 63c, and may be provided on the outer side of the upper surface of the stator 20. The gear box 62c may be a reducer.

[0104] In the gear box 62c of this embodiment, there may be provided inside the gear box 62c a drive shaft 63c that is connected to the motor 61c and rotated by the motor 61c, a drive gear 64c that is provided on the drive shaft 63c, a driven gear 65c that rotates in mesh with the drive gear 64c, and a driven shaft 66c that is connected to the driven gear 65c to support the rotation of the driven gear 65c and transmit the rotational force to the disk 50.

[0105] The drive gear 64c and the driven gear 65c may be reduction gears with a reduction ratio of 6:1, but it goes without saying that the present invention is not limited to this and reduction gears with various reduction ratios can be used.

[0106] Each of the drive shaft 63c and driven shaft 66c can rotate by various bearings.

[0107] Specifically, the drive shaft 63c may have an upper portion rotatably coupled to an upper surface of the gear box 62c by a seventh bearing B7, and a lower portion rotatably coupled to a lower surface of the gear box 62c by an eighth bearing B8.

[0108] In this embodiment, the drive shaft 63c is a shaft that rotates by the driving force of the motor 61c and is not a shaft that is subjected to a large axial force. In this case, the seventh and eighth bearings B7 and B8 can be bearings that can prevent the lateral force of the drive shaft 63c or the lateral movement of the drive shaft 63c, for example, self-aligning bearings.

[0109] The driven shaft 66c may have an upper portion rotatably connected to the upper surface of the gear box 62c by a ninth bearing B9, and a lower portion rotatably connected to the lower surface of the gear box 62c by a tenth bearing B10 and an eleventh bearing B11 arranged in series.

[0110] In this embodiment, the driven shaft 66c is a shaft that directly transmits driving force to the disk 50 and is subjected to a large amount of axial force and lateral force. In this case, the tenth bearing B10 may be a bearing that can prevent the axial force of the driven shaft 66c, for example, a thrust bearing, and the eleventh bearing B11 may be a bearing that can prevent the lateral force of the driven shaft 66c, for example, a self-aligning bearing.

[0111] In addition, since the tenth and eleventh bearings B10, B11 are arranged in series with the driven shaft 66c on the underside of the gearbox 62c, the thickness of the underside of the gearbox 62c can be made relatively thicker than the other sides so that the tenth and eleventh bearings B10, B11 can be provided. If the thickness of the underside of the gearbox 62c is made the same as the conventional thickness, the bearing housing 67a of the first embodiment described above can be fixedly installed inside the gearbox 62c to install the tenth and eleventh bearings B10, B11.

[0112] As described above, the driven shaft 66c in this embodiment is a shaft that directly transmits driving force to the disk 50 and is subjected to a large amount of axial and lateral force. However, not only can the axial and lateral forces be prevented by the tenth and eleventh bearings B10, B11, but also, since the length of the driven shaft 66c itself is short, a bearing that can prevent lateral force from the driven shaft 66c, such as a self-aligning bearing, can be used as the ninth bearing B9.

[0113] The lower bearing portion 70 shown in FIG. 2 suppresses the lateral movement of the rotor 30 which rotates by the power of the driving unit 60, and can be embodied in various embodiments. Below, the lower bearing portion 70a of the first embodiment will be described with reference to FIGS. 12 to 14, the lower bearing portion 70b of the second embodiment will be described with reference to FIGS. 15 to 17, the lower bearing portion 70c of the third embodiment will be described with reference to FIGS. 18 to 20, the lower bearing portion 70d of the fourth embodiment will be described with reference to FIGS. 21 to 22, the lower bearing portion 70e of the fifth embodiment will be described with reference to FIGS. 23 to 25, and the lower bearing portion 70f of the sixth embodiment will be described with reference to FIGS. 26 to 27.

[0114] FIG. 12 is a partial view of the wind propulsion system 1 for explaining a first embodiment of the lower bearing part 70 shown in FIG. 2, FIG. 13 is a cross-sectional view along line A-A' in FIG. 12, and FIG. 14 is a cross-sectional view along line B-B' in FIG. 13.

[0115] As shown in FIGS. 12 to 14, the lower bearing portion 70a of the first embodiment may be composed of an assembly of bearing units 71a, and may be provided on the substructure 10. As shown in FIG.

[0116] The bearing unit 71a may be provided on the foundation 10 and may be composed of a guide bearing 71a1 and a bearing support 71a2.

[0117] The guide bearing 71a1 is provided on the upper end of the bearing support 71a2 and is capable of guiding the rotation of the rotor 30.

[0118] The bearing support base 71a2 supports the guide bearing 71a1 provided at the upper end thereof, and may be provided on the foundation structure 10.

[0119] The above-mentioned bearing units 71a are arranged at regular intervals along the inner surface of the rotor 30 to form the lower bearing portion 70a. In this case, the guide bearing 71a1 is in close contact with the inner surface of the rotor 30, and the bearing support base 71a2 may be provided on the foundation structure 10 without overlapping the rotor 30 and the stator 20.

[0120] In this embodiment, a passage 81 may be provided between the lower bearing portion 70a and the stator 20 to facilitate maintenance of the bearing unit 71a.

[0121] The passage 81 can be secured by reducing the diameter of the stator 20 compared to the existing one. For example, if the diameter of the existing stator is 4 to 4.5 m, the diameter of the stator 20 of this embodiment can be reduced to the level of 2 to 2.5 m to secure the passage 81.

[0122] The stator 20 may have a smaller overall diameter, but it is preferable to enlarge the diameter of the upper portion where the actuator 60 is installed as shown in FIG. 12 so that a space for the actuator 60 to be installed at the top is provided.

[0123] As a result, the lower bearing part 70a of this embodiment makes it easy to manufacture the bearing unit 71a, the bearing support base 71a2 can be installed directly on the foundation structure 10, the installation labor can be reduced, maintenance can be made easier by ensuring a passageway 81, and the stator 20 can be made lighter.

[0124] FIG. 15 is a partial view of the wind propulsion system 1 for explaining a second embodiment of the lower bearing part 70 shown in FIG. 2, FIG. 16 is a cross-sectional view taken along line A-A' in FIG. 15, and FIG. 17 is a cross-sectional view taken along line B-B' in FIG. 16.

[0125] As shown in FIGS. 15 to 17, 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 substructure 10. As shown in FIG.

[0126] The bearing unit 71b may be provided on the foundation 10 and may be composed of a guide bearing 71b1 and a bearing support 71b2.

[0127] The guide bearing 71b1 is provided on the upper end of the bearing support 71b2 and is capable of guiding the rotation of the rotor 30.

[0128] The bearing support base 71b2 supports the guide bearing 71b1 provided at the upper end thereof, and may be provided on the foundation 10.

[0129] The above-mentioned bearing units 71b are arranged at regular intervals along the inner circumferential surface of the rotor 30 to form the lower bearing part 70b. In this case, the guide bearing 71b1 is in close contact with the inner circumferential surface of the rotor 30, and the bearing support base 71b2 may be installed on the foundation structure 10 so as to overlap the stator 20.

[0130] Stator 20 of this embodiment has open parts 82 formed at a fixed interval at the lower end, and bearing unit 71 b may be provided in open parts 82 so that bearing unit 71 b overlaps stator 20 .

[0131] As a result, the lower bearing part 70b of this embodiment makes it easy to manufacture the bearing unit 71b, and by providing the bearing support base 71b2 directly on the foundation structure 10, the installation labor can be reduced, and maintenance of the bearing unit 71b can be facilitated via the open part 82.

[0132] FIG. 18 is a partial diagram of the wind propulsion system 1 for explaining a third embodiment of the lower bearing portion 70 shown in FIG. 2, FIG. 19 is a diagram for explaining a bearing unit 71c constituting the lower bearing portion 70c of the third embodiment, and (a) to (c) of FIG. 20 are diagrams showing the state in which the bearing unit 71c of FIG. 19 is mounted on the stator 20, where (a) is a plan view, (b) is a front view, and (c) is a rear view.

[0133] As shown in FIGS. 18 to 20, the lower bearing portion 70c of the third embodiment may be formed of an assembly of bearing units 71c, and may be provided on the stator 20. As shown in FIG.

[0134] The bearing unit 71c is provided on the stator 20 and may be composed of a guide bearing 71c1, a first joint plate 71c2, and a second joint plate 71c3. In this embodiment, the stator 20 may be provided with windows 83 at regular intervals at the positions where the bearing units 71c are provided.

[0135] A guide bearing 71c1 may be provided on the first joint plate 71c2 and can guide the rotation of the rotor 30.

[0136] The first joint plates 71c2 may be provided in a pair and may be coupled to both ends of the bearing shaft 71c11 of the guide bearing 71c1. When coupled to the bearing shaft 71c11, the pair of first joint plates 71c2 may extend horizontally to one side of the guide bearing 71c1 and have a shape bent vertically at the extended end. The pair of first joint plates 71c2 may be provided with a plurality of first bolt holes 71c21 for bolt coupling to the second joint plate 71c3.

[0137] The second joint plate 71c3 may be provided along the edge of the window 83 inside the stator 20, and may have a plurality of second bolt holes 71c31 corresponding to the first bolt holes 71c21 for coupling with the pair of first joint plates 71c2. The second joint plate 71c3 may have a protruding shape that is at least equal to or smaller than the radius of the guide bearing 71c1.

[0138] The above-mentioned bearing unit 71c is attached to the stator 20 by bolting the first and second joint plates 71c2, 71c3, and a plurality of them are arranged at regular intervals along the inner circumferential surface of the rotor 30 to form the lower bearing portion 70c. At this time, as shown in (a) to (c) of Figure 20, the guide bearing 71c1 can protrude outward through a window 83 of the stator 20 while being fixed by the first and second joint plates 71c2, 71c3, and can be in close contact with the inner circumferential surface of the rotor 30.

[0139] As a result, the lower bearing part 70c in this embodiment is manufactured by modularizing the bearing unit 71c, which not only makes it easy to manufacture but also reduces the amount of installation work required, and by being installed on the stator 20, structural safety can be ensured.

[0140] FIG. 21 is a partial diagram of the wind propulsion system 1 for explaining a fourth embodiment of the lower bearing portion 70 shown in FIG. 2, and FIG. 22 is a diagram for explaining a bearing unit 71d that constitutes the lower bearing portion 70d of the fourth embodiment.

[0141] As shown in FIGS. 21 and 22, the lower bearing portion 70d of the fourth embodiment may be formed of an assembly of bearing units 71d, and may be provided on the stator 20. As shown in FIG.

[0142] The bearing unit 71d is provided on 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 windows 84 at regular intervals at the positions where the bearing units 71d are provided.

[0143] The guide bearing 71d1 may be provided in the joint box 71d2 and can guide the rotation of the rotor 30.

[0144] The joint box 71d2 may be provided along the edge of the window 84 inside the stator 20, and the guide bearing 71d1 may be fixed in a state in which a part of the guide bearing 71d1 protrudes to the outside. The joint box 71d2 may be provided with a plurality of first bolt holes 71d21 for bolting to the stator 20.

[0145] The stator 20 may have windows 84 spaced apart at positions where the bearing units 71d are provided, and second bolt holes 71d22 corresponding to the first bolt holes 71d21 may be provided along the edges of the windows 84 for bolt connection to the joint box 71d2.

[0146] The bearing unit 71d is attached to the stator 20 by bolting the joint box 71d2, and a plurality of them are arranged at regular intervals along the inner circumferential surface of the rotor 30 to form the lower bearing part 70d. At this time, when the joint box 71d2 is fixed to the stator 20, a portion of the guide bearing 71d1 protrudes outward through a window 84 of the stator 20 so as to be in close contact with the inner circumferential surface of the rotor 30.

[0147] As a result, the lower bearing part 70d in this embodiment is manufactured by modularizing the bearing unit 71d, which not only makes it easy to manufacture but also reduces the amount of installation work required, and by being installed on the stator 20, structural safety can be ensured.

[0148] FIG. 23 is a partial view of the wind propulsion system 1 for explaining a fifth embodiment of the lower bearing part 70 shown in FIG. 2, FIG. 24 is a cross-sectional view along line A-A' in FIG. 23, and FIG. 25 is a cross-sectional view along line B-B' in FIG. 24.

[0149] As shown in FIGS. 23 to 25, the lower bearing portion 70e of the fifth embodiment may be formed as a single bearing unit 71e, or may be provided on the stator 20. As shown in FIG.

[0150] The bearing unit 71e is provided on the stator 20 and may be composed of a guide bearing 71e1 and a guide rail 71e2.

[0151] The guide bearing 71e1 may be provided along the outer circumferential surface of the stator 20 and can guide the rotation of the rotor 30.

[0152] The guide bearing 71e1 may be an annular single bearing, for example a journal type or a ball / roller type bearing.

[0153] Considering that the annular guide bearing 71e1 is currently the largest size bearing that can be installed in a structure with a diameter of 2.5 m, the stator 20 may be smaller than a diameter of at least 2.5 m. The stator 20 may have a diameter of 2.5 m or less overall, but it is preferable that the diameter of the upper part where the driving unit 60 is installed is made larger than the existing diameter (e.g., 4 to 4.5 m) so that a space for installing the driving unit 60 is provided at the upper part, as shown in FIG. 23.

[0154] The guide rail 71e2 may be formed along the inner circumferential surface of the rotor 30 at a position corresponding to the annular guide bearing 71e1, and may guide the guide bearing 71e1. In this case, the guide rail 71e2 may have various protruding heights, and the protruding height may be determined according to the diameter of the rotor 30.

[0155] That is, when the diameter of the stator 20 is 2.5 m, the minimum diameter of the rotor 30 may correspond to the diameter of the guide bearing 71e1 provided on the outer peripheral surface of the stator 20, and the maximum diameter of the rotor 30 may be determined according to the protruding height of the guide rail 71e2.

[0156] Generally, the larger the diameter of the rotor 30, the better the wind propulsion capability. Therefore, in this embodiment, the diameter of the rotor 30 can be increased as desired and the function of the lower bearing part 70e can be performed by adjusting the protruding height of the guide rail 71e2.

[0157] Such guide rail 71 e 2 may be separately manufactured and provided on the inner peripheral surface of the rotor 30 , or may be manufactured integrally with the rotor 30 .

[0158] As a result, in the present embodiment, the lower bearing part 70e is provided on the stator 20 by applying an annular single bearing to the guide bearing 71e1, thereby ensuring structural safety, and the size of the rotor 30 can be changed to a desired size by adjusting the height of the guide rail 71e2, thereby easily improving wind propulsion performance.

[0159] FIG. 26 is a partial view of the wind propulsion system 1 for explaining a sixth embodiment of the lower bearing unit 70 shown in FIG. 2, and FIG. 27 is a cross-sectional view taken along line AA' in FIG.

[0160] As shown in FIGS. 26 to 27, the lower bearing portion 70f of the sixth embodiment may be formed of an assembly of bearing units 71f, and may be provided on the rotor 30. As shown in FIG.

[0161] 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.

[0162] The guide bearing 71f1 may have an arm 71f2 on one side thereof, and can guide the rotation of the rotor 30.

[0163] The arm 71f2 may be provided on the inner circumferential surface of the rotor 30. The arm 71f2 may be of a variable length, foldable, or fixed type. If the arm 71f2 is of a variable length, the length can be manually adjusted like a telescopic or tent pole.

[0164] 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 have various protruding heights, and the protruding height may be determined according to the diameter of the stator 20 or the rotor 30.

[0165] For example, when the diameter of the rotor 30 is fixed and the diameter of the stator 20 is changed, the protruding height of the guide rail 71f3 is adjusted according to the changed diameter, so that the function of the lower bearing part 70f can be performed. The same is true when the diameter of the rotor 30 is changed when the diameter of the stator 20 is fixed.

[0166] Such guide rail 71f3 may be manufactured separately and provided on the outer circumferential surface of the stator 20, or may be manufactured integrally with the stator 20.

[0167] As a result, the lower bearing part 70f of this embodiment can manufacture the rotor 30 or stator 20 to the desired size by adjusting the height of the guide rail 71f3, thereby easily improving the wind propulsion performance.

[0168] As described above, the wind propulsion system 1 of the present invention has been described in various embodiments with reference to FIGS. 3 to 27 for each of the stator 20, rotor 30, end plate 40, disk 50, driving unit 60, and lower bearing unit 70 shown in FIG. 2, but is not limited to the embodiments for each configuration and may include a combination of the above embodiments or a combination of at least one of the above embodiments with known technology as further embodiments.

[0169] Although the present invention has been described above with reference to the embodiments, these are merely illustrative and do not limit the present invention, and a person having ordinary knowledge in the field to which the present invention belongs can understand that various combinations, modifications, and applications not exemplified in the embodiments are possible within the scope of the essential technical content of the present embodiments. Therefore, technical content related to modifications and applications that can be easily derived from the embodiments of the present invention should be interpreted as being included in the present invention. [Explanation of symbols]

[0170] 1. Wind Propulsion System 10 Foundation structures 20 Stator 30, 30a, 30b Rotor 31a Unit Panel 31a1 curved plate 31a2 female connector 31a21 1st board 31a22 2nd board 31a23 3rd board 31a21 4th board 31a3 male connector 31a31 5th board 31a32 6th board 31a4 Mating space 31b Lower rotor 31b1 1st edge panel 32b Upper Rotor 32b1 2nd Edge Panel 33b Connecting member 33b1 First clamp plate 33b2 Second clamp plate 33b3 First bolt member 33b4 Second bolt member 33b5 First bonding member 33b6 Second bonding member 40, 40a End plate 41a Disc 42a Stiffener 43a central area 44a Outer Region 50 discs 60, 60a, 60b, 60c Drive unit 61a, 61c Motor 62a, 62c gearbox 63a, 63c Drive shaft 64a, 64c Drive gear 65a, 65c Driven gear 66a, 66c Driven shaft 66a1 1st driven shaft 66a2 2nd driven shaft 67a, 67b Bearing housing 68a Coupling member 70, 70a, 70b, 70c, 70d, 70e, 70f Lower bearing part 71a, 71b, 71c, 71d, 71e, 71f Bearing units 71a1, 71b1, 71c1, 71d1, 71e1, 71f1 Guide bearings 71c11 Bearing shaft 71a2, 71b2 Bearing support 71c2 1st joint plate 71c21 First bolt hole 71c3 2nd joint plate 71c31 2nd bolt hole 71d2 joint box 71d21 1st bolt hole 71d22 2nd bolt hole 71e2 Guide rail 71f2 Arm 71f3 guide rail 81 Passage route 82 Open area 83, 84 Windows B1~B11 1st~11th bearings S ship L Lifting device

Claims

1. A stator vertically disposed on the deck; A rotor having a cylindrical shape so as to cover the outside of the stator; A motor provided on the stator; a gearbox coupled to the motor and configured to reduce a speed of rotation of the motor; a driven shaft configured to transmit rotational power to the rotor through the gearbox via a disk coupled to the rotor; a lower bearing portion provided at a lower portion of the rotor to suppress lateral movement of the rotor; The lower bearing part is A wind propulsion system comprising an assembly of bearing units, at least a portion of which is provided along the edge of a window provided at a regular interval inside the stator at the position where the bearing units are provided, and including a joint portion that supports a guide bearing that guides the rotation of the rotor on the stator.

2. The above joint part is a pair of first joint plates connected to both ends of a bearing shaft of the guide bearing; 2. The wind propulsion system according to claim 1, further comprising: a second joint plate disposed along an edge of the window inside the stator and coupled to the first joint plate.

3. The first joint plate is a first bolt hole for bolting to the second joint plate, the first bolt hole being formed in the first bolt hole and having a shape bent vertically at an end of the first bolt hole, the first bolt hole being formed in the first bolt hole and being connected to the second joint plate; The second joint plate is The wind propulsion system according to claim 2, characterized in that a plurality of second bolt holes are provided, each of which has a protruding shape at least equal to or smaller than the radius of the guide bearing and corresponds to the first bolt holes.

4. The above joint part is The wind propulsion system according to claim 1, further comprising a joint box provided along an edge of the window inside the stator, the joint box fixing the guide bearing with a portion of the guide bearing protruding to the outside.

5. The above gearbox is A drive shaft rotated by a motor; A drive gear provided on the drive shaft; a driven gear that rotates in mesh with the drive gear, The gearbox is mounted inside the stator, The driven shaft is a first driven shaft coupled with the driven gear to support rotation of the driven gear, the first driven shaft being built-in and disposed inside the stator; 2. The wind propulsion system of claim 1, further comprising a second driven shaft connected to the first driven shaft via a coupling member and configured to transmit rotational force to the disk.

6. Further comprising a bearing housing configured to rotatably support the second driven shaft; 6. The wind propulsion system according to claim 5, wherein the bearing housing is provided inside an upper surface of the stator or outside an upper surface of the stator.

7. The drive shaft is a first bearing rotatably couples an upper portion to an upper surface of the gearbox; a second bearing rotatably connects the lower portion to the lower surface of the gear box; The first and second bearings are:

6. The wind propulsion system according to claim 5, characterized in that the bearing prevents lateral force or lateral movement of the drive shaft.

8. The first driven shaft is a third bearing rotatably connects the upper portion to the upper surface of the gearbox; a fourth bearing rotatably connects the lower portion to the lower surface of the gear box; The third and fourth bearings are:

6. A wind propulsion system according to claim 5, characterized in that the first driven shaft is provided with a bearing capable of preventing lateral forces.

9. The second driven shaft is a fifth bearing and a sixth bearing arranged in series, the fifth bearing and the sixth bearing are rotatably coupled to the upper surface of the stator; The fifth bearing is: a bearing capable of preventing the axial force of the second driven shaft, The sixth bearing is 6. A wind propulsion system according to claim 5, characterized in that the second driven shaft is provided with a bearing capable of preventing lateral forces.

10. The rotor is: a lower rotor having a ring-shaped first edge panel at an upper end thereof, the first edge panel extending inwardly by a certain length and having a space for receiving the disk; an upper rotor having a ring-shaped second edge panel at a lower end thereof, the second edge panel extending inwardly by a certain length and having a space for receiving the disk; 2. The wind propulsion system according to claim 1, further comprising: a coupling member coupling said lower rotor, said upper rotor, and said disk.

11. The connecting member is a first clamp plate supporting a lower surface of the first edge panel and a lower surface of the disk; a second clamp plate supporting an upper surface of the first edge panel and an upper surface of the disk; a first bolt member for fixing the first and second clamp plates and the disk; The wind propulsion system of claim 10 , further comprising a second bolt member fastening the first edge panel and the second edge panel.

12. The connecting member is a first bonding member disposed between the first edge panel and the second clamp plate; The wind propulsion system of claim 11, further comprising a second bonding member disposed between the second edge panel and the second clamping plate.

13. A foundation structure on land is loaded onto the deck using a lifting device; a drive unit including the disk, the motor, the gear box, and the driven shaft is installed on top of the stator on land; Lift the lower rotor with the lifting device to accommodate the stator therein; The lower rotor and the disk are coupled together using the coupling member; The lower rotor in which the stator is housed is mounted on the foundation structure using the lifting device; aligning an upper rotor on land with an upper portion of the lower rotor mounted on the foundation structure using the lifting device; The wind propulsion system according to claim 10, wherein the lower rotor and the upper rotor are connected to each other by using a connecting member.

14. A ship comprising the wind propulsion system according to any one of claims 1 to 13.

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