KR20100039943A - Steel tower rotation type windmill - Google Patents

Abstract

PURPOSE: A pylon rotary type windmill is provided to appropriately cope with according to the strength of wind and improve the durability. CONSTITUTION: A pylon rotary type windmill includes a top part shaft load supporting bearing, a bottom part shaft load supporting bearing, a top part horizontal skeleton(11,12), a bottom part horizontal skeleton(13,14), a plurality of windmill wheels(9,10), a power transmission unit, a driving shaft, and a generator. The top part and the bottom part shaft load supporting bearing are vertically arranged to the upside and downside by an iron post(1) fixed to the ground surface. A shaft is vertically inserted to the top part and the bottom part shaft load supporting bearing. A plurality of windmill wheels are installed in each terminal part of the top part horizontal skeleton and the bottom part horizontal skeleton.

Description

Steel Tower Windmills {STEEL TOWER ROTATION TYPE WINDMILL}

The present invention relates to a windmill, and more particularly, to a pylon rotating windmill that maximizes the generation of power by providing a plurality of windmill wheels in a small space.

Windmills currently used for power generation usually have a three-winged windmill structure with three wings, and the installation direction of the windmill is always directed in a constant direction.

Therefore, such a conventional windmill is a simple structure of a three-wing type, so it is difficult to make the most of the wind, and there is a problem that it is difficult to properly respond to the amount of wind. In particular, in terms of durability, there was a problem that it is not suitable for the realities of Korea because it is vulnerable to strong winds such as typhoons.

Accordingly, an object of the present invention is to provide a windmill that can not only make the most of the wind, but also can respond appropriately according to the strength of the wind and can be suitably used in the realities of Korea.

In order to achieve the above object, the present invention provides an upper bearing support bearing (3) and a lower bearing support bearing (4) disposed vertically in two stages by an iron column (1) fixed to the ground; A shaft (5) inserted perpendicular to the upper bearing support (3) and the lower bearing support (4) so that the upper and lower portions are rotatably supported; An upper rotary tower (7) disposed around the shaft (5) and rotating integrally with the shaft (5); An upper horizontal frame 11 and 12 and a lower horizontal frame 13 and 14 provided to intersect the upper and lower ends of the upper rotary tower 7 in a horizontal direction, respectively; A plurality of windmill wheels (9, 10) installed at each end of the upper horizontal frame (11, 12) and the lower horizontal frame (13, 14); Power transmission means for transmitting power of the rotary shaft 91 of each of the windmill wheels 9 and 10; A drive shaft on which power transmitted by the power transmission means is concentrated; And it provides a windmill comprising a generator that is rotationally driven by the drive shaft.

Here, the windmill further includes a ring gear 2 which is supported by the iron pillar 1 and the shaft 5 is accommodated therein, and the shaft 5 has a drive gear 61 on one side. The shaft-coupled motor 6 is fixedly installed, and the drive gear 61 is tooth-coupled with the ring gear 2, so that the shaft 5 is driven by the motor 6 to the ring gear 2. It can also be driven to rotate within.

At this time, the upper rotary tower 7 is a frame 172 which is provided with two pairs of guide beams 174 vertically disposed at a predetermined interval from side to side and rotatable inside the frame 172. The wind direction indicating arrow 171 is supported in the inward direction of the wind direction indicating arrow 171 and both ends of the pair of guide beams 174 provided between the pair of guide beams 174, respectively. A pair of switches 175 and 176 are installed to face each other, and the motor 6 is electrically connected to the pair of switches 175 and 176 so that the wind direction arrow 171 is winded. When the switch 175 or 176 on one side to be turned on (ON) by being driven in the corresponding rotation direction, the shaft 5 may also be driven to rotate in the same direction.

The power transmission means includes a connecting shaft 1010 for transmitting the power of the windmill wheel 10 installed in the upper horizontal frames 11 and 12 to the driving shaft 15, but the connecting shaft 1010. ) Is provided to be divided and coupled in two axes by the clutch 1014, and has a key 1013 for operating the clutch 1014, when the outside wind is more than a predetermined wind speed the key 1013 By operating the clutch 1014 due to the rotation of the two shafts constituting the connecting shaft 1010 are separated from each other, the power of the windmill wheel 10 installed in the upper horizontal frame (11, 12) is driven by the drive shaft It may be prevented from passing to (15).

In addition, the windmill further includes a second drive shaft 152 connected through the drive shaft 15 and the chain-sprocket 151, and an auxiliary generator 18 that is rotationally driven by the second drive shaft 152, The second driving shaft 152 is provided to be divided and coupled in two axes by the clutch 153, and the cylinder 154 for operating the clutch 153 and the cylinder 154 on and off It further includes a switch 156 for operating, and a key 155 for operating the switch, when the external wind is more than a certain wind speed, the switch 156 is turned on due to the rotation of the key 155, thereby The cylinder 154 is driven to operate the clutch 153 so that two shafts constituting the second driving shaft 152 are coupled to each other so that the power of the driving shaft 15 is transmitted to the auxiliary generator 18. You may.

In addition, the windmill wheels 9 and 10 may include a plurality of folding wings 912 having a blade shape folded at an acute angle and protruding radially about the rotating shaft 91.

In this case, the windmill wheels 9 and 10 may be supported by including the folding wing 912 by attaching the support 916 in the circumferential direction.

In this case, the auxiliary folding wings 913 'may be further included between each of the folding wings 912 adjacent to each other.

On the other hand, in order to achieve the above object, the present invention is vertically supported in the upper and lower two stages by the iron column (1) is fixed to the top wall fixed to the ground (3) and the upper bearing support bearing 3 and the lower bearing support bearing (4); A shaft (5) vertically inserted into the upper bearing support bearing (3) and the lower bearing support bearing (4) so that the upper and lower portions are rotatably supported; A rotating pylon (7) disposed around the shaft (5) and rotating integrally with the shaft (5); Horizontal frameworks 13 'and 14' provided to intersect the rotating pylon 7 in a horizontal direction; A plurality of windmill wheels 9 installed at each end of the horizontal frame 13 'and 14'; Power transmission means for transmitting power of the rotary shaft 91 "of each windmill wheel 9; a drive shaft to which power transmitted by said power transmission means is concentrated; and a generator which is rotationally driven by said drive shaft. It provides a windmill characterized by.

Here, the windmill further includes a ring gear 2 which is supported by the iron pillar 1 and the shaft 5 is accommodated therein, and the shaft 5 has a drive gear 61 on one side. The shaft-coupled motor 6 is fixedly installed, and the drive gear 61 is tooth-coupled with the ring gear 2, so that the shaft 5 is driven by the motor 6 to the ring gear 2. It can also be driven to rotate within.

And, the power transmission means, the connecting shaft 203 for transmitting the power of the windmill wheel 9 installed in one horizontal frame 14 'of the horizontal frame (13', 14 ') to the drive shaft (15). The connecting shaft 203 is provided to be divided and coupled in two axes by the clutch 202, and is provided with a key 201 for operating the clutch 202. When the wind speed is greater than a predetermined wind speed, the clutch 202 is operated due to the rotation of the key 201 so that the two shafts forming the connecting shaft 203 are separated from each other, and the windmill wheel is installed on the one side horizontal frame 14 '. The power of 9 may be prevented from being transmitted to the drive shaft 15.

According to the windmill according to the present invention as described above, it can not only make the most of the wind, but also can respond appropriately according to the strength of the wind and the durability is high, can be used suitably in the reality of Korea.

Hereinafter, with reference to the accompanying drawings will be described a pylon rotating windmill according to an embodiment of the present invention.

Basically, the windmill according to the embodiment of the present invention is to rotate the pylon, such as to rotate the steam locomotive or train two people 180 degrees to hold each windmill in the direction of the wind to receive the wind well.

Referring to Figures 1 and 2, first, the foundation is constructed so as to be a regular square at 35m intervals, and four iron pillars 1 having a height of 30m are constructed thereon so that the interval is narrowed at the upper end.

Ring gear (2, Fig. 9) on the top of the iron pillar (1) and the bearing support bearing (3) inward to the top of the pillar (1) in order to firmly support the upper rotating tower when the storm is blowing Combine 4).

As shown in Figs. 2 to 4, the upper bearing support bearing 3 is a large bearing and the lower bearing support bearing 4 is a small bearing, in which the upper bearing support bearing 3 is mainly a shaft. It serves to support (5), and the lower bearing support bearing 4 is used as a bearing to assist the shaft 5 support in the replacement of the upper bearing support bearing 3.

The specific shape of the upper bearing support 3 and the lower bearing support 4 are substantially the same except that the sizes are different.

Representatively, in the upper axial support bearing (3), as shown in Figures 3, 4 and 8, the rotary bearing 31 and the rotary bearing 31 is engaged with the central axis (5 in Figure 2) It is divided into a fixed bearing 32 for supporting.

The fixed bearing 32 is integrally combined with the iron column 1 described above.

As shown in the reference figure of FIG. 8, the rotary bearing 31 is rotatably supported by the ball bearing 33 on the fixed bearing 32.

Therefore, in FIG. 2, the shaft 5 is fastened by rotating bearings 31 and 41 at the upper and lower portions thereof, and is fixed to the iron pillar 1 by being fixedly coupled to the iron pillar 1 at the upper and lower portions on the iron pillar 1. It is supported to be rotatable by the bearings 32 and 42.

2 and 9, the drive gear 61 of the motor 6 coupled to protrude integrally on one side of the shaft 5 is referred to as the ring gear 2. This is achieved by rotating in a toothed engagement.

On the upper end of the shaft 5, the support beams 8 for supporting the upper rotary tower 7 are radially coupled.

On the other hand, referring to Figure 1, the windmill according to an embodiment of the present invention is provided with four windmill wheels 9 in the front, rear, left and right, four windmill wheels 10 in the front, rear, left and right as well. do.

The structure for supporting these windmill wheels (9, 10), as shown in Figure 2, first to provide an upper rotary pylon (7) supported by the support beam (8) of the upper end of the shaft (5).

And, as shown in Figure 1, the upper end of the rotating pylon 7 is coupled to the horizontal frame (11, 12) so as to project forward and backward and left and right.

Similarly, as shown in FIG. 3, the horizontal frame 13 and 14 are coupled to the lower end of the upper rotating pylon 7 so as to protrude from front to back and left to right.

When these horizontal frameworks 11 to 14 are coupled to each end, as shown in FIG. 1, the windmill wheels 9 and 10 are rotatably coupled.

The mechanism for transmitting the driving force when the windmill wheels 9 and 10 are rotated by the wind is shown in FIG. 5.

Each of the rotary shafts 91 to 94 of the four lower windmill wheels 9 transmits power through bevel gears and chain-sprocket transmissions.

For example, the rotation shaft 91 transmits power to the first transmission shaft 96 through the bevel gear 95, and the first transmission shaft 96 transmits the second transmission shaft 98 through the bevel gear 97. ), The second transmission shaft 98 is again powered by the bevel gear 99 to the third transmission shaft 910, the third transmission shaft 910 to the drive shaft 15 through the chain-sprocket 911 By driving the generator 16 is driven.

In particular, the chain sprocket 911 functions as a one-way clutch to swing on the drive shaft 15 when the rotation speed of the drive shaft 15 is faster than the third drive shaft 910, such as a chain-sprocket structure of a bicycle. It is provided with.

As such, the four lower windmill wheels 9 transmit power to the drive shaft 15, respectively, to drive the generator 16.

In this case, in the case of a long shaft such as the first transmission shaft 96, the shaft 96 is divided into a plurality of shafts to prevent sagging due to its own load, and thus the coupling 96a, for example, a universal joint ( universal joint).

The upper windmill wheels 101 to 104 also transmit power in the same configuration as the lower windmill wheels 91 to 94, but in this case, the power is first transmitted to the intermediate shaft 105, and the intermediate shaft ( The power of 105 is transmitted to the lower connecting shaft 1010 through the chain-sprocket 106, the bevel gears 107 and 108, and the transmission shaft 109.

The connecting shaft 1010 likewise transmits power to the drive shaft 15 through the bevel gear 1011 and the chain-sprocket 1012.

At this time, the intermediate portion of the connecting shaft 1010, as shown in Figure 7, to take the coupling configuration between the two shafts 1014, and is provided with a key 1013 for the operation of the clutch 1014. .

As a result, when the wind blows hard, for example, when the speed is 25 m / s or more, the key 1013 is inclined much to the left. Accordingly, the clutch 1014 moves to the right to form the connecting shaft 1010. Release the coupling between the two axes.

According to the configuration of the connecting shaft 1010, it is possible to prevent the generator 16 from being overloaded through the drive shaft 15.

On the other hand, in Figure 5, the wind vane 17 is installed in the middle portion of the upper rotary tower (7).

As shown in FIG. 6, the wind vane 17 includes a wind direction indicating arrow 171 and a frame 172 rotatably supporting it.

In particular, the frame 172 is constrained so that the left and right ends of the wind direction indicating arrow 171 can be rotated only within a certain angle range through a pair of guide beams 173 and 174 extending perpendicular to the left and right sides.

In addition, a pair of switches 175 and 176 protruding inward to the middle portion is mounted in the guide beam 174 at the left end.

These switches 175 and 176 are electrically connected to a motor 6 (see FIG. 2) installed on one side of the shaft 5 (see FIG. 2).

According to the configuration of the wind direction 17 to maximize the rotational force by rotating the upper rotary tower 7 in the direction of the wind blowing to face the windmill wheels (9, 10 of Figure 1) in the wind blowing direction You can.

That is, in FIG. 6, when the wind blows in a direction out of the range of the guide beams 173 and 174, the wind direction indicating arrow 171 is operated by turning on one side switch 175 or 176 to turn on the motor. (6) to drive the upper rotary tower 7 in the direction.

When the upper rotary tower 7 rotates to substantially match the direction in which the wind blows, both ends of the wind direction indicating arrow 171 are spaced apart from the inside of the guide beams 173 and 174 so that the one-side switch 175 or 176 is disposed. By turning off (OFF), the motor 6 stops driving, so the upper rotary tower 7 no longer rotates.

On the other hand, in Figure 5, in case of overloading the generator 16, the chain-sprocket 151 is installed on the drive shaft 15 to transfer power to the second drive shaft 152 through the auxiliary generator ( 18) may be driven.

At this time, the second drive shaft 152 has a structure similar to the above-described clutch and the key structure (see 1014, 1013 of FIG. 7) so that the second drive shaft 152 divided into two only when the wind speed is a predetermined value or more You can also make connections.

For example, as shown in FIG. 10, the second drive shaft 152 is divided into two so as to engage or disengage with each other by the clutch 153, and the clutch 153 is operated by the cylinder 154. Be sure to

The cylinder 154 is activated / deactivated according to the on / off of the switch 156 attached to the frame 157, and the on / off of the switch 156 is controlled by the rotation of the key 155.

That is, when the wind speed is a predetermined value or more, when the key 155 is rotated to turn on the switch 156, the cylinder 154 is driven to operate the clutch 153, thereby causing the two second driving shafts 152. ) Are coupled to each other to drive the auxiliary generator 18.

As shown in FIG. 1, the windmill wheels 9 and 10 have eight wings 912 and 913 extending radially about the axis 91.

Wings 912 and 913 are composed of a folding wing 912 and a general wing 913, the folding wing 912 is a blade is folded at an acute angle as shown in Figure 11 and the folded edge portion is forward to wind By going through it, you can reduce the resistance of the air.

A plurality of triangular reinforcement pieces 914 are attached to the groove portion formed at an acute angle in the folding wing 912 to support the folded portion.

According to the folded wing 912 has a advantage that can receive a lot of wind compared to the general wing 913 because it can receive a lot of wind.

However, when a strong wind blows like a typhoon, it may have a disadvantage in that it is slightly widened. In contrast, as shown in the enlarged view of the right side of FIG. ).

The general wing 913 is a conventional wing is provided to be inclined by a predetermined angle in the direction of the wind incident, thereby taking a way to be rotated.

On the other hand, as shown in Figure 1, between the wings 912, 913 is attached to the support 916 in the circumferential direction to ensure the firmness.

FIG. 12 shows another embodiment 9 'of a windmill wheel, with eight folding wings 912' radially about an axis 91 ', and an outer region between adjacent folding wings 912'. The auxiliary folding wing 913 'is provided.

By providing the auxiliary folding wings 913 ', the number of wings of the windmill wheel 9' is increased to receive more wind power, and the length of the support 916 'is shorter to increase the rigidity. Have

On the other hand, Figure 13 is a side cross-sectional view of the windmill wheel 9, the shaft 91 is formed in three stages so that the wing 912 portion is attached to the second stage in the middle of the shaft (91).

To support the wing 912, two support pipes 917 are attached to each other from the right end of the shaft 91 to the middle part and the end of the wing 912.

The third stage portion of the shaft 91 located on the left side is to be supported by the bearing 918.

The bearing 918 is a pair of two are arranged in a total of two places, the pair of bearings 918 are provided in each of the pair to keep the shaft 91 is supported when replacing the bearing 918 of the bearing 918 This is to facilitate the replacement.

Each bearing 918, as shown in Figure 14, is divided into two parts up and down is provided to be coupled to each other through the coupling piece 919.

In order to prevent the occurrence of the phenomenon in which the bearings 918 are relaxed after the coupling, quadrangular uneven parts 9110 are provided at the inside and the outside to be coupled to each other.

When the assembly of the bearing 918 is completed and installed, the bearing 918 is inserted into the bushing 9111, and the coupling piece 919 protruding in the radial direction is inserted into the end recess portion 9112 of the bushing 9111.

FIG. 15 is a modification of the windmill according to the embodiment of the present invention, and compared with the windmill of FIG. 1, only the lower horizontal frame 13 ′ and 14 ′ are provided to have only four windmill wheels 9 below. .

In addition, the iron column (1 in FIG. 1) was replaced by a top wall 19 to form a substructure.

Other components are similar to those of the windmill of FIG. 1 as described above, and thus description thereof will be omitted.

16 is a device structure for idling two windmill wheels before and after the horizontal frame 14 'when the wind blows hard like a typhoon in the modification.

That is, when the wind is strong, when the key 201 is tilted in the clockwise direction, the connection of the connecting shaft 203 divided into two by the action of the clutch 202 is released, so that the rotational force of the shaft 91 '' on the side of the windmill wheel is released. This is to prevent delivery.

The embodiments and modifications of the windmills described above are merely to help understanding of the present invention, but the scope of the present invention is not limited to the scope of the present invention, and the scope of the present invention is defined by the claims below. It is determined by the range or the equivalent range.

1 is a perspective view showing a windmill according to an embodiment of the present invention,

2 is a partially enlarged perspective view illustrating a main part of FIG. 1;

3 and 4 are partially enlarged perspective views showing a part of FIG.

5 is a schematic view showing an example of the power transmission means applied to the windmill of FIG.

6 and 7 are partially enlarged perspective views showing the control element employed in the power transmission means of FIG.

FIG. 8 is an exploded and combined perspective view illustrating the upper hung bearing bearing shown in FIG. 2;

9 is a schematic view for explaining the transmission structure of the ring gear of FIG.

10 is a partially enlarged perspective view showing a control element employed in the power transmission means of FIG. 5;

11 is a schematic diagram for explaining one component of a windmill wheel applied to the windmill of FIG.

12 is a front view showing a modification of the windmill wheel that can be applied to the windmill of FIG.

FIG. 13 is a schematic side view of the windmill wheel of FIG. 12;

14 is an exploded view for explaining the bearing structure of FIG. 13;

15 is a perspective view showing a modification of the windmill according to the embodiment of the present invention;

FIG. 16 is a partially enlarged perspective view illustrating a control element employed in the windmill of FIG. 15.

Claims (11)

An upper axial support bearing 3 and a lower axial support bearing 4 arranged vertically in two stages up and down by an iron column 1 fixed to the ground; A shaft (5) inserted perpendicular to the upper bearing support (3) and the lower bearing support (4) so that the upper and lower portions are rotatably supported; An upper rotary tower (7) disposed around the shaft (5) and rotating integrally with the shaft (5); An upper horizontal frame 11 and 12 and a lower horizontal frame 13 and 14 provided to intersect the upper and lower ends of the upper rotary tower 7 in a horizontal direction, respectively; A plurality of windmill wheels (9, 10) installed at each end of the upper horizontal frame (11, 12) and the lower horizontal frame (13, 14); Power transmission means for transmitting power of the rotary shaft 91 of each of the windmill wheels 9 and 10; A drive shaft on which power transmitted by the power transmission means is concentrated; And A windmill comprising a generator that is rotationally driven by the drive shaft. The method of claim 1, The windmill further includes a ring gear (2) supported by the iron pillar (1) and the shaft (5) is accommodated inside, The shaft 5 is fixedly installed on one side of the motor 6, the drive gear 61 is coupled to the shaft and the drive gear 61 is tooth-coupled with the ring gear 2, thereby driving the motor 6 Windmill, characterized in that through which the shaft (5) is rotationally driven in the ring gear (2). The method of claim 2, The upper rotary pylon 7 includes a frame 172 having two pairs of guide beams 174 vertically disposed at a predetermined interval from each other, and supported to be rotatable inside the frame 172. And the wind direction indicating arrow 171 and the wind direction indicating arrow 171 positioned between the pair of guide beams 174 and the pair of guide beams 174 provided at one location, respectively. A pair of switches 175 and 176 installed to face each other, The motor 6 is electrically connected to the pair of switches 175 and 176 so that the wind direction indicating arrow 171 is rotated by wind to turn on the switch 175 or 176 on one side. A windmill, characterized in that the shaft (5) is also driven to rotate in the same direction by being driven in the rotational direction. The method of claim 1, The power transmission means, It is provided with a connecting shaft 1010 for transmitting the power of the windmill wheel 10 is installed in the upper horizontal frame (11, 12) to the drive shaft 15, the connecting shaft 1010 is connected to the clutch 1014 It is provided to be divided and coupled in two axes by a key 1013 for operating the clutch 1014, When the outside wind is above a certain wind speed, the clutch 1014 is operated due to the rotation of the key 1013 so that the two axes constituting the connecting shaft 1010 are separated from each other. Windmill, characterized in that the power of the windmill wheel 10 is installed in the drive shaft 15 to prevent transmission. The method of claim 1, The windmill further includes a second drive shaft 152 connected through the drive shaft 15 and the chain-sprocket 151, and an auxiliary generator 18 driven to rotate by the second drive shaft 152. The second driving shaft 152 is provided to be divided and coupled in two axes by the clutch 153, and the cylinder 154 for operating the clutch 153 and the cylinder 154 on and off Further comprising a switch 156 for operating and a key 155 for operating the switch, When the outside wind is more than a predetermined wind speed, the switch 156 is turned on by the rotation of the key 155, which causes the cylinder 154 to be driven to operate the clutch 153 so that the second driving shaft 152 is operated. Windmill, characterized in that the two shafts to be coupled to each other, so that the power of the drive shaft (15) is transmitted to the auxiliary generator (18). The method of claim 1, The windmill wheel (9, 10) is a windmill, characterized in that it comprises a plurality of folding wings (912) having a blade shape folded at an acute angle and protrude radially about the rotating shaft (91). The method of claim 6, The windmills (9, 10) is a windmill, characterized in that the support including the folding wing (912) by attaching a support (916) in the circumferential direction. The method of claim 7, wherein Windmill, characterized in that it further comprises an auxiliary folding wing (913 ') between each of the folding wing (912) adjacent to each other. An upper axial support bearing 3 and a lower axial support bearing 4 which are vertically disposed in two vertical stages by an iron pillar 1 fixed to a top wall fixed to the ground; A shaft (5) inserted perpendicular to the upper bearing support (3) and the lower bearing support (4) so that the upper and lower portions are rotatably supported; A rotary iron tower (7) disposed around the shaft (5) and rotating integrally with the shaft (5); Horizontal frameworks 13 'and 14' provided to intersect the rotating pylon 7 in a horizontal direction; A plurality of windmill wheels 9 installed at each end of the horizontal frame 13 'and 14'; Power transmission means for transmitting power of the rotary shaft 91 "of each windmill wheel 9; A drive shaft on which power transmitted by the power transmission means is concentrated; And A windmill comprising a generator that is rotationally driven by the drive shaft. 10. The method of claim 9, The windmill further includes a ring gear (2) supported by the iron pillar (1) and the shaft (5) is accommodated inside, The shaft 5 is fixedly installed on one side of the motor 6, the drive gear 61 is coupled to the shaft and the drive gear 61 is tooth-coupled with the ring gear 2, thereby driving the motor 6 Windmill, characterized in that through which the shaft (5) is rotationally driven in the ring gear (2). 10. The method of claim 9, The power transmission means, Is provided with a connecting shaft 203 for transmitting the power of the windmill wheel 9 installed in one horizontal frame 14 'of the horizontal frame 13', 14 'to the drive shaft 15, the connecting shaft ( 203 is provided to be divided and coupled in two axes by the clutch 202, and has a key 201 for operating the clutch 202, When the outside wind is above a certain wind speed, the clutch 202 is operated due to the rotation of the key 201 so that the two axes constituting the connecting shaft 203 are separated from each other, so that the one side horizontal frame 14 ' The windmill, characterized in that the power of the windmill wheel (9) that is installed is not transmitted to the drive shaft (15).

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