JP5168296B2 - Vertical axis wind power generator - Google Patents

Description

  The present invention relates to a vertical axis wind power generator provided with a vertical blade Darius type windmill having blades in the vertical direction along a rotation axis perpendicular to the wind direction, and the blades are rotated in the rotation direction of the rotation shaft by the wind. It is about improvement.

Conventionally, the technology of a vertical axis wind power generator has been publicly known.
For example, there is one disclosed in Patent Document 1. The thing of this patent document 1 is a linear blade | wing vertical axis | shaft (H-Darius) type windmill, The both ends are being fixed to a pair of supporting member located in the orthogonal | vertical direction along the rotating shaft direction. is there.

Japanese Patent Laid-Open No. 10-110666

  However, in the configuration of Patent Document 1, since the flow of wind around the blade cannot be adjusted, the rotation of the blade may become unstable.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, the vertical shaft type wind power generator of the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft. A cylindrical member disposed, a radial bearing disposed above or in the middle of the tubular member, and rotatably supporting the rotating shaft; and disposed below the tubular member, the rotating shaft A thrust bearing rotatably supported; and a bearing provided on the inner wall of the cylindrical member with a clearance from the rotating shaft in the vicinity of the thrust bearing, and when the rotating shaft sways laterally, It contacts with the bearing provided in a cylindrical member inner wall.
According to the above configuration, instead of a thrust bearing that cannot receive a lateral load, the lateral load when the rotating shaft is shaken is a bearing provided on the inner wall of the cylindrical member with a clearance from the rotating shaft. Can receive. As a result, the rotation shaft can be stably rotated.

A vertical axis wind power generator according to the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in a circumferential direction of the rotating shaft. The gap is connected via a clutch that is connected when the rotation shaft reaches a predetermined rotation speed.
According to the above configuration, when the wind is weak, the rotating shaft can be idled and the rotation of the rotating shaft can be connected to the generator when the rotating speed reaches a predetermined rotating speed.

A vertical axis wind power generator according to the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft. provided the support member and the lateral downward lower support member, a tip of the upper support member and said lower support member, attached to the longitudinal direction of the blades of one by one, the a tip of the upper support member longitudinal The upper part of the blade | wing of a direction contact | abuts, and the front-end | tip of the said lower support member and the lower part of the said blade | wing of a vertical direction contact | abut .

  According to the said structure, an upper support member and a lower support member become a triangle shape with respect to a blade | wing, and can support a blade | wing stably.

Furthermore, the present invention may have the following configuration.
The vertical axis wind power generator of the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft. Have

  According to the said structure, a baffle plate can be arrange | positioned suitably like a baffle plate up and down, and the middle, the flow of the wind which goes to a blade | wing can be rectified | straightened, and rotation of a blade | wing can be adjusted. It is also possible to prevent the wind from escaping from the end of the blade.

  In the vertical axis wind power generator according to the present invention, the cross-section of the rectifying plate has a shape in which the outer shape of the horizontal cross-section of the blades is similarly increased.

  According to the said structure, since the baffle plate receives the wind which escapes from the edge of a blade | wing equally, the flow of the wind which goes to a blade | wing can be rectified more reliably, and rotation of a blade | wing can be adjusted.

  In the vertical axis wind power generator of the present invention, the rectifying plate is attached to the blades obliquely so as to generate lift on the rotating shaft.

  According to the above configuration, the rectifying plate can reduce the load of the rotating shaft vertically downward, and the load on the bearing of the rotating shaft can be reduced.

  A vertical axis wind power generator according to the present invention is a wind power generator having a rotary shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotary shaft. A speed control device is provided that includes the conductive member provided and a magnet member that is adjustable in distance with respect to the conductive member.

  According to the above configuration, when the magnet member is brought close to a conductive member such as aluminum provided on the blade in a strong wind such as a storm, an overcurrent is generated on the surface of the conductive member, a braking operation is generated, and an excessive rotation speed is obtained. This can be suppressed.

  In the vertical axis wind power generator according to the present invention, the speed suppression device includes a speed detection device for the rotating shaft and a forward / backward drive device for moving the conductive member forward and backward with respect to the blades according to the detected speed.

  According to the above configuration, the rotational speed of the rotary shaft corresponding to the wind speed can be detected, and a brake operation can be generated so as not to automatically become an excessive rotational speed.

  The vertical axis wind power generator of the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft. There is provided a rotation stop device that is a combination of a friction plate that is pressed toward the surface and an operation device that stops or releases the pressing of the friction plate.

  According to the above configuration, since the rotation stopping device that operates in a strong wind such as a storm and presses the friction plate against the rotation shaft is provided, the rotation can be stopped before reaching the excessive rotation speed.

  The vertical shaft type wind power generator of the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft. Is attached to the tip of the supporting member so that the middle of the blade in the vertical direction is inclined with respect to the vertical direction of the blade via a hinge and a spring member.

  According to the above configuration, when an excessive force is applied to the blade, the blade is inclined and opened with respect to the vertical direction, thereby reducing the force applied to the blade.

  The vertical shaft type wind power generator of the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft. The blade is attached to the tip of the support member via a hinge and a spring member so as to be inclined with respect to the lateral direction of the blade.

  According to the above configuration, when an excessive force is applied to the blade, the blade is inclined and opened with respect to the lateral direction, thereby reducing the force applied to the blade.

  In the vertical axis wind power generator of the present invention, the upper support member and the lower support member are formed such that the section modulus decreases toward the tip, and the cross section has a substantially mountain shape.

  According to the above configuration, the upper support member and the lower support member can be reduced in weight, the rotational moment can be reduced, and the rigidity can be increased.

  The vertical axis wind power generator of the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft. A brush is provided, or an insulating material is provided between the rotating shaft and the outer cylinder of the bearing that supports the rotating shaft.

  According to the above configuration, lightning can be prevented by letting electricity escape to the ground or by electrically insulating the rotating shaft to the blades during a lightning strike.

  A vertical axis wind power generator according to the present invention includes a vertical rotating shaft and a plurality of vertical blades attached in a circumferential direction of the rotating shaft, wherein the rotating shaft is on the blade side. The upper rotating shaft of the generator, the lower rotating shaft of the generator side, and the fitting portion of both rotating shafts, the fitting portion is formed with a transmission portion of the rotational torque having a fitting gap. is there.

  According to the above configuration, due to the fitting gap, the upper rotating member can transmit the rotational torque while being inclined by the gap with respect to the lower rotating member, and the blades attached to the upper rotating member can follow the wind. it can.

  A vertical axis wind power generator according to the present invention is provided adjacent to each other in the circumferential direction in a wind power generator having a rotary shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotary shaft. The vicinity of the coupling portion between the support member and the blade is connected by a string-like member.

  According to the said structure, since a support member will be reinforced, it can oppose the centrifugal force which generate | occur | produces on a blade | wing.

The vertical axis wind power generator of the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft, wherein the blades are made of an aluminum alloy. A weight that is movable in the circumferential direction by a spring bias is provided inside the blade.
According to the above configuration, the weight moves in the outer circumferential direction by rotation, and the inertial force is small at low speed rotation, and the inertial force is large at high speed rotation.

The vertical axis wind power generator of the present invention is a wind power generator having a rotating shaft provided vertically and a plurality of vertical blades attached in the circumferential direction of the rotating shaft, wherein the blades are made of an aluminum alloy. The pedestal portion that supports the base side of the rotating shaft is provided with a posture stabilization device that includes a detachable extension member extending horizontally from the pedestal portion and a fixing member attached to the end of the extension member. Yes.
According to the said structure, the wind power generator using a light blade | wing can be installed anywhere.
The fixing member of the vertical axis wind power generator of the present invention is formed with a weight.
With this configuration, the extension member can be fixed simply by attaching a weight.
The weight of the vertical wind power generator according to the present invention is formed of a tank capable of supplying and discharging water.
According to the said structure, it becomes heavy by the water absorption of water, and it will become light when water is drained.

Since the present invention is configured as described above, the following effects can be obtained.
That is, according to the vertical shaft type wind power generator of the present invention, instead of the thrust bearing that cannot receive the load in the lateral direction, the lateral load when the rotating shaft is swayed has a clearance from the rotating shaft. It can be received by a bearing provided on the inner wall of the cylindrical member. As a result, the rotation shaft can be stably rotated.

  Further, according to the vertical axis wind power generator of the present invention, it is possible to reduce the power generation loss at the time of starting the wind power generator.

  Further, according to the vertical axis wind power generator of the present invention, the blades open at the time of abnormal wind pressure, etc., so that the force acting on the blades can be reduced and the centrifugal force can be reduced by reducing the rotational speed. As a result, blade damage can be avoided.

The front sectional view of the vertical axis type wind power generator concerning one embodiment of the present invention. (A) is a figure which shows the embodiment with which four baffle plates were attached to the blade | wing, (b) is a perspective view of the blade | wing which attached the baffle plate in (a) upward with respect to the wind direction, (c) ) Is a side view of (b). It is a figure which shows the embodiment provided with the apparatus which can perform the speed | rate suppression of a blade | wing, Comprising: (a) provides the speed suppression apparatus on the outer side of a blade | wing, and this apparatus is automatic, (b) is (a). (C) shows the case where the speed control device is provided below the rotating shaft. (A) is a figure which shows the embodiment by which the blade | wing was attached to the support member by the hinge and the spring so that it can incline vertically, (b) is a (b)-(b) arrow line view of FIG. 4 (a). (C) is a figure which shows the embodiment by which the blade | wing was attached to the supporting member by the hinge and the spring so that inclination was possible in the vertical direction. (A) is a figure which shows an example of the embodiment which escapes electricity from a rotating shaft, Comprising: (b) is a figure which shows the other example of the embodiment which escapes electricity from a rotating shaft. (A) is a figure which shows an example of the embodiment which stops rotation of a rotating shaft, (b) is a principle figure of the rotation stop apparatus which stops rotation of a rotating shaft, (c) is implementation which stops rotation of a rotating shaft The figure which shows the other example of an aspect. The figure which shows the height adjustment mechanism and rotating shaft support mechanism of a rotating shaft. The figure which shows the embodiment by which the upper and lower support member of horizontal upper direction and the lower support member of horizontal downward were provided in the rotating shaft, and the vertical direction upper and lower sides of the said blade | wing were attached to the front-end | tip of an upper support member and a lower support member. The perspective view of the whole vertical wind power generator which is other one Embodiment of this invention. The figure which shows an example of the embodiment which suppresses the rotational load of a rotating shaft.

Next, embodiments of the invention will be described.
FIG. 1 is a front sectional view of a vertical axis wind power generator according to the present invention. 101 is a foundation, which is formed of simple concrete. Reference numeral 102 denotes a rotating shaft, which is kept upright by means described later. Reference numeral 103 denotes blades for generating power of wind power generation. The blades 103 are arranged between the opposing surfaces of the support member 104 fixed to the upper part of the rotating shaft 102 in a direction perpendicular to the axial center direction, and a plurality of blades are arranged along the peripheral edge. Are arranged. On the upper and lower ends of the blades 103, there are provided rectifying plates 105 for adjusting the flow of wind around the blades 103. Reference numeral 106 denotes a cylindrical body. The rotary shaft 102 is positioned in the internal space, and the rotary shaft 102 is rotatably supported by bearings 107 and 108 positioned on the upper and lower inner surfaces. Reference numeral 109 denotes a member support frame, which is fixed at an appropriate position on the foundation 101 and holds the lower end portion of the cylindrical body 106. Reference numeral 100 denotes a wire fixing means, which includes a wire 100a and a wire tension adjusting mechanism 100b for energizing the wire 100a. Both ends of the wire fixing means 100 are arranged at least at three places (at intervals of 120 degrees) between the fixing portion 106a of the cylindrical body 106 and the fixing portion 110 on the ground side. The wire fixing means 100 constitutes a self-supporting replenishing means for maintaining the vertical state of the rotating shaft 102 which is stressed by the wind pressure received by the blades 103 and is about to be displaced from the shaft center in the direction perpendicular to the axis. A generator 112 is fixed to the frame body 109, and has a pulley 113 on the rotating shaft thereof. A pulley 114 is fixed on the rotary shaft 102 at the same height as the pulley 113. Reference numeral 115 denotes a belt which is engaged between the pulleys 113 and 114, and transmits the rotational force of the rotating shaft 102 to the generator 112. When the wind turbine does not start due to factors such as strength, it can also serve as a starting motor.
Although not shown, it is usual to provide a brake mechanism for decelerating and stopping rotation at the lower end of the rotating shaft 102.
Further, although not shown, the generator 112 and the rotating shaft 102 may be connected to the lower end of the rotating shaft 102 through a centrifugal clutch. Thereby, the rotating shaft 102 is idled during a gust of wind that cannot be generated by the generator to accumulate rotational energy, and when the rotating shaft 102 reaches a predetermined rotational speed, the rotation of the rotating shaft 102 is connected to the generator, At this time, the rotational energy accumulated in the rotating shaft 102 overcomes the cogging phenomenon at the time of starting the generator, and there is no power generation loss at the time of starting the generator.

Fig.2 (a) is a figure which shows the embodiment with which the four baffle plates were attached to the blade | wing.
The rectifying plates 251 are attached one by one to the upper and lower ends of the blades 253 one by one on the way to the junction between the blades 253 and the support members 255 of the blades 253.
With the above configuration, it is possible to prevent leakage of the wind flow from the blades and to mute the rotating sound of the blades.
In this embodiment, four rectifying plates are attached to the blades, but the required number may be attached to the middle part of the blades.
FIGS. 2B and 2C are diagrams showing an example of blades in which the rectifying plate 254 provided close to the support member 255 in FIG. 2A is attached upward with respect to the wind direction. The rectifying plate 254 is attached obliquely with respect to the blade 253.
If a plurality of the current plates 254 are installed, lift is generated, and the load on the bearing can be reduced. As a result, the efficiency can be improved and the life of the bearing can be extended by reducing the mechanical loss of the bearing.

FIG. 3 is a diagram showing an embodiment including an apparatus capable of performing blade speed control. As shown in FIG. 3A, the speed suppressing device 264 that can suppress the speed of the blade 263 includes the blade 263 that is a conductive member, the speed detecting device 265 that detects the rotational speed of the rotating shaft 262, and the detected speed. Accordingly, a device 267 for moving the magnet member 266 forward and backward with respect to the blade 263 and a controller unit 268 for controlling a motor 267a for driving the forward / backward drive device 267 are provided.
Thus, when a strong wind such as a typhoon blows, it automatically senses that it is in a strong wind state, adjusts the distance between the magnet member 266 and the blade 263, approaches the blade 263, which is a conductive member, and closes the surface. An overcurrent is generated and the brake operation is performed. As a result, overspeed is prevented, and failure of the vertical axis wind power generator due to excessive rotation is prevented.
The blade 263 may be a conductive member as a whole as described above, or only a portion corresponding to the magnet member may be a conductive member.
The embodiment shown in FIG. 3A is automatically driven in an emergency, but as shown in FIG. 3B, the magnet member 266 is manually advanced and retracted with respect to the blade 263. Also good. In this case, after moving, it is fixed with a bolt 269 or the like.
In addition, as illustrated in FIG. 3C, a speed suppressing device that moves the magnet member 266 forward and backward by attaching the disc 261 that is a conductive member with the central axis aligned with the lower portion of the rotating shaft 262 may be provided.

FIG. 4A is a view showing an embodiment in which the blade is attached to the support member by a hinge and a spring so as to be tiltable in the vertical direction. FIG.4 (b) is a (b)-(b) arrow directional view of Fig.4 (a).
The support member 275 is a member having a substantially T-shaped cross section in a direction perpendicular to the ground. At the tip 276, the blade 273 is joined by a hinge so as to be swingable. In addition, the blade 273 is attached by a spring 274 so as to be tiltable in the vertical direction of the blade 273 in the vicinity of the tip opposite to the tip 276.
According to the above embodiment, when a centrifugal force or wind pressure of a certain level or more is generated in the blade 273 by the strong wind, the blade 273 can freely tilt in the vertical direction of the blade 273. Therefore, since the centrifugal force and wind pressure above a certain level can be reduced, no abrupt stress is applied to the blades and there is almost no risk of breakage.
Although not shown, if the tip 276 and the blade 273 are joined by pin joining, the blade 273 can swing in the vertical and horizontal directions.
4 (c) shows the state in which the support member 275 in FIG. 4 (a) is rotated 90 degrees about the axis of the support member 275, and the blade 273 can be tilted laterally. It is joined with a hinge and a spring as in a).
According to the said embodiment, the effect similar to the embodiment in Fig.4 (a) is acquired.

Fig.5 (a) is a figure which shows an example of the embodiment which escapes electricity from a rotating shaft. The electric brush 281 that releases electricity from the rotating shaft 282 is provided in the middle portion of the outer cylinder 284 of the bearing 285 so that the tip portion is in contact with the rotating shaft 282. Further, the portion of the electric brush 281 opposite to the contact side with the rotating shaft 282 is connected to the ground.
According to the said embodiment, the damage at the time of a lightning strike can be prevented.
FIG.5 (b) is a figure which shows the other example of the embodiment which escapes electricity from a rotating shaft. An insulating material 286 is provided between the rotating shaft 282 and the outer cylinder 284 of the bearing 285 that supports the rotating shaft 282.
According to the said embodiment, the effect similar to the embodiment of Fig.5 (a) is acquired.

FIG. 6A is a diagram showing an example of an embodiment for stopping the rotation of the rotating shaft, and FIG. 6B is a principle diagram of the rotation stopping device for stopping the rotation of the rotating shaft. The rotation stop device 291 fixedly supported by the cylinder 296 includes a friction plate 294 that is biased toward the rotation shaft 292, and an operation device 295 that restrains or releases the bias of the friction plate 294. , And a spring 297 connected to the friction plate 294 and the operating device 295. The friction plate 294 is provided with a permanent magnet 294a on the operating device 295 side. The operating device 295 has a coil 295b connected to the power source 295a on the permanent magnet 294a side.
In the normal state, the permanent magnet 294 is attracted to the coil 295b side and is not in contact with the rotating shaft 292. In an emergency, a current flows from the power source 295a to the coil 295b, and the magnetic fluxes of the permanent magnet 294 and the coil 295b cancel each other. At this time, the friction plate 294 is pressed against the rotating shaft 292 by the repulsive force of the spring 297 that has been contracted, thereby stopping the rotation of the rotating shaft 292.
According to the above embodiment, by stopping the rotation of the rotating shaft 292 during a storm or the like, it is possible to obtain an effect of protecting the apparatus from being excessively rotated and from being damaged.
FIG.6 (c) is a figure which shows the other example of the embodiment which stops rotation of a rotating shaft. In the rotation stopping device 291 ′, the friction cylinder 298 is configured such that one ends of the friction half cylinders 298 a and 298 b are rotatably joined at a joint portion 298 c and the other ends of the friction half cylinders 298 a and 298 b are joined by a spring 299. And an operating device 295 ′ for stopping or releasing the urging of the friction tube 298 by a cam 295′a.
Normally, the cams 295′a are bitten between the other ends of the friction half cylinders 298a and 298b, and are temporarily fixed so as not to contact the rotating shaft 292.
In an emergency, the cam 295′a is rotated between the other ends of the friction half cylinders 298a and 298b in parallel on the plane of the rotary shaft 292 cross section by the operating device 295 ′. Then, the other ends of the friction half cylinders 298a and 298b are closed, the friction cylinder 298 is brought into contact with the rotating shaft 292, and the rotation is stopped. However, the power source of the operating device 295 ′ is connected only in an emergency, and is not connected in a normal state.
According to the said embodiment, the effect similar to the embodiment of Fig.6 (a) is acquired.

FIG. 7 is a diagram illustrating a rotary shaft height adjusting mechanism and a rotary shaft support mechanism. As shown in FIGS. 7A and 7D, the rotary shaft height adjusting mechanism 300 has two parts in which a support member 305 to which a blade 303 is attached is attached to the upper part and is cut out in the same shape in the lower part. Facing each other, a rod-shaped rotating shaft 302 having a plurality of radial through holes in the upper part and partially cutout in the lower part, a rotating shaft 301 and a rotating shaft 302. And a fixed support rod 304 for fixing and supporting the above.
Since the rotating shaft 302 has a plurality of through holes 302a, the height of the rotating shaft 301 is adjusted by fixing and supporting the rotating shaft 301 and the rotating shaft 302 by changing the insertion position of the fixed support rod 304 into the through hole 302a. it can. Further, as shown in FIG. 7B, the lower portion of the rotating shaft 302 is cut out so as to be fitted to the rotating shaft support member 306 that supports the lower portion of the rotating shaft 302 so that the rotating shaft 302 can be removed. In addition, as long as the rotating shaft 302 and the rotating shaft support member 306 fit, it does not need to have the shape shown in FIG. For example, a polygon such as a triangle or a rectangle may be used, or a spline may be used.
FIG. 7C is a view showing a cross section of the rotation shaft in the fixed support rod 304 portion.
If the above embodiment is combined with other embodiments, the height of the rotating shaft can be easily adjusted in each device, and even if the support column is bent or thermally expanded, it slides, so that excessive force is not applied. The effect is obtained.

In FIG. 8A, an upper support member 314a horizontally upward and a lower support member 314b horizontally downward are provided on the upper and lower disks 311a and 311b respectively attached to the upper portion of the rotation shaft 312. It is a figure which shows the upper part vicinity of the rotating shaft 312 of the vertical axis | shaft type wind power generator with which the vertical direction of the blade | wing 313 is attached to the front-end | tip of the upper supporting member 314a and the lower supporting member 314b. The central portions of the disks 311a and 311b are fixedly supported on the rotating shaft 312 with bolts or the like. The edge portions of the disks 311a and 311b to which the upper support member 314a and the lower support member 314b are attached have slits so that each support member can be bent so as to be easily attached. However, the peripheral part vicinity 316 between the slits of the part which cannot be bent is fixed by welding or the like.
8 (b) is a top view of FIG. 8 (a), FIG. 8 (c) is a view from arrows (c)-(c) of FIG. 8 (b), and FIG. 8 (d) is FIG. (D)-(d) of FIG. As shown in FIGS. 8B, 8 </ b> C, and 8 </ b> D, the upper support member 314 a and the lower support member 314 b are formed so that the section modulus decreases toward the tip, and the cross section has a substantially mountain shape. . The upper support member 314a and the lower support member 314b are attached to one side surface in the radial direction of the disks 311a and 311b, and the other side surface is a mountain shape at the end of the upper support member 314a and the lower support member 314b on the disk side. The plate member 315 fixed to the back side is reinforced so as to be able to withstand the force in the circumferential direction of the disks 311a and 311b (force by wind pressure received by the blade 313).
According to the above embodiment, the blade 313 can be stably supported, and an abnormality can be prevented from occurring when the blade 313 rotates.
In addition, in order to oppose the centrifugal force which generate | occur | produces in a blade | wing, it is good also as a structure which connects the blade | wing adjacently provided in the circumferential direction. For example, it is good also as an embodiment which connects blade | wings with a plate-shaped member, or couple | bonds the connection part vicinity of the upper support member 314a and the blade | wing 313 with a wire.

  In addition, if the material of the blade | wing of each said embodiment is made into aluminum, the weight reduction of an apparatus can be achieved.

Next, a vertical axis wind power generator according to another blade structure will be described.
A weight (weight) is disposed in the blade 103 of FIG. 1 so as to be movable by centrifugal force. Specifically, a weight is disposed in the blade 103. The weight is pressed from the outer peripheral side surface in the thickness direction of the blade 103 by a pressing spring, and is attracted from the inner peripheral side in the thickness direction of the blade 103 by a pulling spring.

  When the blades 103 are not rotating, or when the blades 103 are rotating at a low speed, the weight is pushed by the push spring and pulled by the pull spring, and thus is located on the inner peripheral side. Therefore, the inertial force due to the weight is not large, and the blade 103 can rotate lightly at a low speed.

  When the blade 103 rotates at a high speed, the weight moves to the outer peripheral side of the blade 103 against the urging force of the push spring and the pulling spring due to the centrifugal force acting on the weight. Therefore, the inertial force due to the weight increases, and the blade 103 can continue to rotate stably at high speed.

The weight is attached by a guide rod so as to be freely movable in the circumferential direction, and is only pulled by the push spring or the pull spring, and is attracted to the inner peripheral side. The structure which can move to an outer peripheral side may be sufficient.
Many such weights can be attached in the longitudinal direction of the blade 103. By providing a large number of weights in this way, the weights 45 are simultaneously moved in the outer peripheral direction by rotation, and even if the inertial force is small at low speed rotation, the inertial force can be increased at high speed rotation.

Furthermore, an example of the installation structure of the vertical axis wind power generator will be described with reference to FIG.
In FIG. 9, the vertical axis wind power generator 501 includes a rotating shaft 502 provided vertically and a plurality of blades 503 attached in the circumferential direction of the rotating shaft 502.
Support members 512 and 513 are attached above the rotation shaft 502 via a disk 511. A lower portion of the rotation shaft 503 is rotatably supported in the support column 522 via a bearing 521. The support column 522 has a base 523 serving as a pedestal. The base 522 is installed on the foundation by an attitude stabilizing device 505 described later. A generator 525 is connected to the lower side of the rotating shaft 502 via an appropriate speed change mechanism 524.

  The upper support member 512 extends obliquely upward from the upper-direction bent portion of the disk 511 and supports the upper side of the blade 503. The lower support member 513 extends obliquely downward from the lower-oriented bent portion of the disk 511 and supports the lower portion of the blade 503.

  The blade 503 has a wing-shaped cross section, one surface 503a is a convex surface with a long streamline, and the other surface 503b is a flat surface with a short streamline. As shown in the drawing, the arrangement is not limited to the one surface 503a facing outward, but the one surface 503a may be disposed inward facing the axis.

  The blade 503 includes two or more aggregates made of an aluminum alloy extending in the longitudinal direction of the blades, a number of aluminum alloy wing plates fixed to the aggregate in an inserted state, and aluminum stretched around the wing plates. It consists of a thin skin made of an alloy. Thus, the wind power generator 501 made of aluminum alloy and using the light blades 503 is installed on the ground or the like by its base (pedestal part) 523, but in order to facilitate the installation, the attitude stabilizer 505 Used.

  The posture stabilizing device 505 includes a detachable extension member 551 extending horizontally from a base (base part) 523 that supports the base side of the rotating shaft 502, and a weight (fixing member) attached to an end of the extension member 551. 552.

  The base (base part) 523 has a triangular shape in the illustrated example, and pipe-like extension members 551 are provided radially outward from the three sides. The extension member 551 is detachable with respect to a base (base portion) 523 and a weight 552 described later.

  A weight 552 is attached to the end of the extension member 551. The weight 552 is formed of a plastic tank. The tank is provided with a water inlet 552a and a water outlet 552b, and each tank can be closed or opened by a plug.

  In installing the power generation apparatus 1, the base 523 is installed at a predetermined position so that the windmill stands in a correct posture. Next, the extension member 551 is attached to the base 523. A weight 552 is attached to the end of the extension member 551. Water is supplied from the water inlet 552a of the weight 552, and the tank forming the weight 552 is filled with water. If the weight 552 is, for example, a 50 liter tank, the weight is 50 kg.

When it is desired to change the installation position of the power generation device 501, water is extracted from the drain port 552 b of the weight 552. The weight 552 becomes an empty tank and lightens. In this state, the entire windmill including the blades 503 is lightened, and can be easily moved without any change or by removing the extension member 551 and the empty weight 552.
Then, the power generator 501 can be stably installed by introducing water into the weight 52 again at a predetermined position.
In addition, the fixing member attached to the end of the extending member 551 is not limited to a weight, and may be a pile driving structure with respect to the ground. By making the extending member 551 longer, the wind power generator 501 can be stabilized.

  FIG. 10 is a diagram illustrating an example of an embodiment for suppressing the rotational load of the rotation shaft. A radial ball bearing 602, a thrust ball bearing 603, a rotating shaft 604, and a touch-down ball bearing 605 are disposed inside a cylinder 601 provided vertically.

  The radial ball bearing 602 receives a load in a direction perpendicular to the rotation axis direction, is fixed above the inner wall of the cylinder 601, and rotatably supports the rotation shaft 604.

  The thrust ball bearing 603 receives a load in the rotation axis direction, and includes a ring-shaped plate member 603a on one side, a ring-shaped plate member 603b on the other side, and a plurality of balls 603c. The ring-shaped plate member 603a on one side is fixed vertically to the cylinder 601 below the cylinder 601 and is disposed with a gap from the inner wall of the cylinder 601. Further, the ring-shaped plate member 603b on the other side is fixed perpendicularly to the rotation shaft 604, and is arranged with a gap from the outer wall of the rotation shaft 604. The plurality of balls 603c are sandwiched between a plate member 603a and a plate member 603b so as to be movable along a circumferential groove (not shown) provided on the inside thereof. With the above configuration, the thrust ball bearing 603 supports the rotating shaft 604 in a rotatable manner.

  The rotating shaft 604 is rotatably supported by a radial ball bearing 602 and a thrust ball bearing 603 at the center portion of the cylinder 601. A section below the rotary shaft 604 is formed in a stepped shape, and a ring-shaped plate on the upper part of the thrust ball bearing 603 is fitted. Further, a ring-shaped plate member 606 is attached near the lower part of the touchdown ball bearing 605 of the rotating shaft 604 in order to restrict the upward movement of the rotating shaft 604 together with the touchdown ball bearing 605.

  The touch-down ball bearing 605 is provided on the inner wall of the cylinder 601 in the vicinity of the upper portion of the thrust ball bearing 603 with a clearance from the rotation shaft 604.

  Next, the operation of this embodiment will be described. The thrust ball bearing 603 cannot receive a lateral load. Therefore, the load when the rotating shaft 604 shakes in the lateral direction is concentrated on the radial ball bearing 602 provided in the upper portion, and the structure is weak against the lateral load. Therefore, a touch-down ball bearing 605 is provided below the cylinder 601, and a lateral load when the rotary shaft 604 is shaken is received by the touch-down ball bearing 605, and the rotary shaft 604 is moved until the rotation of the rotary shaft 604 is stabilized. Support for rotation. Then, when the rotation of the rotation shaft 604 starts to stabilize, the rotation shaft 604 moves away from the touchdown ball bearing 605.

  According to the present embodiment, instead of the thrust ball bearing 603 that cannot receive a lateral load, the touchdown ball bearing 605 can receive the lateral load when the rotating shaft 604 is shaken. As a result, the rotation shaft 604 can be stably rotated.

Instead of the radial ball bearing 602, a radial roller bearing or the like may be used. Further, the position of the radial ball bearing 602 may be fixed to a middle portion of the cylinder 601.
Further, instead of the thrust ball bearing 603, a thrust roller bearing or a thrust magnetic bearing may be used.
Further, instead of the touchdown ball bearing 605, a touchdown roller bearing or the like may be used. Further, the position of the touchdown ball bearing 605 may be near the lower side of the thrust ball bearing 603.

  In addition, although the various structure was shown by the above embodiment, this structure can be implemented individually or in combination of 2 or more.

DESCRIPTION OF SYMBOLS 100 Wire fixing means 100a Wire 100b Wire tension adjustment mechanism 101 Base 102,262,282,292,301,302,312 Rotating shaft 103,253,263,273,303,313 Blade 104,255,275,305 Support member 105 , 251, 254 Current plate 106 Cylindrical body 107, 108 Bearing 109 Frame body 110 Fixed part 112 Generator 113 Pulley 261, 311a Disk 264 Speed control device 265 Speed detection device 266 Magnet member 267 Advance / retreat drive device 267a Motor 268 Controller part 269 Bolts 274, 297, 299, Spring 276 Tip 281 Electric brush 284 Outer cylinder 286 Insulating material 291 Rotation stop device 294 Friction plate 294a Permanent magnet 295, 295 'Operation device 295a Power supply 95b Coil 295'a Cam 296 Cylinder 298 Friction cylinder 298a, 298b Friction half cylinder 298c Joint part 300 Adjustment mechanism 302a Through hole 304 Fixed support bar 306 Rotating shaft support member 314a Upper support member 314b Lower support member 315 Plate member 316 Circumferential part Neighborhood 551 Extension member 552 Weight (fixing member)
552a Water inlet 552b Drain outlet 601 Tube 602 Radial ball bearing 603 Thrust ball bearing 603a, 603b, 606 Ring-shaped plate member 603c Ball 604 Rotating shaft 605 Touchdown ball bearing 605 Tube

Claims (3)

In a wind turbine generator having a rotation shaft provided vertically and a plurality of vertically oriented blades attached in the circumferential direction of the rotation shaft,
A cylindrical member in which the rotating shaft is disposed;
A radial bearing disposed above or in the middle of the cylindrical member and rotatably supporting the rotating shaft;
A thrust bearing disposed below the cylindrical member and rotatably supporting the rotating shaft;
In the vicinity of the thrust bearing, provided with a bearing provided on the inner wall of the cylindrical member with a gap with the rotating shaft,
A vertical axis wind power generator that contacts a bearing provided on the inner wall of the cylindrical member when the rotating shaft sways laterally. Have a generator,
2. The vertical axis wind power generator according to claim 1, wherein the rotary shaft and the generator are connected via a clutch that is connected when the rotary shaft reaches a predetermined rotational speed. The transverse upwardly of the upper support member and the horizontal downward lower support member is provided on a rotary shaft, a tip of the upper support member and said lower support member, attached to the longitudinal direction of the blades of one by one, the 3. The vertical according to claim 1 , wherein a front end of the upper support member and an upper portion of the vertical blade are in contact with each other, and a front end of the lower support member and a lower portion of the vertical blade are in contact with each other. Axial wind power generator.

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