JP2000234582A - Gyro-mill type wind mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase an output from an output shaft without increasing an installation space or a manufacturing cost. SOLUTION: This wind mill comprises a boss member 13 extending along the axis of a deflection shaft 30; and an arm member 12 extending from the boss member 13 toward an output shaft 1 and intercoupling the boss member 13 and the tip part of the output shaft 1. The boss member 13 is arranged at a rotary blade 20 in a mode wherein an arm member 12 is positioned approximately at a central part along the axis of the deflection shaft 30 of a rotary vane 20. Each end part of the boss member 13 and the rotary vane 20 are relatively rotatably supported through the deflection shaft 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gyromill type wind turbine in which the direction of a rotary wing provided around an output shaft is appropriately changed according to the wind direction.

[0002]

2. Description of the Related Art FIG. 7 shows a general gyromill type wind turbine of this type. This wind turbine is installed on a horizontal fixed surface A such as the ground, and has a plurality of pairs of arm members C and D on a peripheral surface of an output shaft B arranged along the vertical direction.

The pair of arm members C and D extend in a horizontal direction from both upper and lower ends of the output shaft B in a state of being parallel to each other, and are radially arranged around the output shaft B. .

Each of the pair of arm members C and D supports the rotary blade F between the extending ends thereof via a deflecting axis E, and is located further inward than the deflecting axis E. A stopper G is provided at the site. The deflection axis E is fixed to each pair of arm members C and D via both ends thereof, and extends along the vertical direction. The rotary wing F has, for example, a rectangular plate shape, and is provided with a cylindrical boss member H at a position outside a center line along the vertical direction.
And is rotatably supported on the deflection axis E through the shaft. The stoppers G protrude from the arm members C and D in directions facing each other, and each comes into contact with the inner portion of the rotary wing F.

In the gyromill type wind turbine constructed as described above, an output shaft B is provided by a bearing J provided on a horizontal fixing surface A.
Is installed on the horizontal fixed surface A via the lower end of the. In this state, for example, when wind blows from above the paper surface in FIG. 8, as shown in FIG. 8, the direction of the rotating wings F is changed as appropriate, and the output shaft B is rotated via the arm members C and D. Can be rotated about its axis.
In other words, in a portion on the right side of the output shaft B with respect to the wind direction, the rotor F that has received the wind rotates around the axis of the deflecting shaft E, so that the posture is such that the wind resistance is always reduced.
In a portion on the left side of the output shaft B, the rotary blade F held in a state parallel to the arm members C and D by the stopper G receives wind. Therefore, a rotational force is generated to rotate the output shaft B counterclockwise. For example, if the output shaft B is connected to a generator shaft, it is possible to generate power using wind power. Become.

In this type of gyromill type wind turbine,
When the output shaft B is rotating, the arm members C and D become resistance. Therefore, in order to rotate the wind turbine efficiently, it is preferable that the arm members C and D are provided at a position connecting the shortest distance between the output shaft B and the rotary blade F, that is, at a horizontal position.

In order to increase the output from the output shaft B, the area receiving the wind, that is, the pressure receiving area of the rotary blade F may be increased. In this case, due to the installation space problem, it is common to extend the rotary wing F vertically upward to increase its pressure receiving area.

[0008]

By the way, in the gyro-mill type wind turbine shown in FIG. 7, a rotary blade F receiving a wind pressure is rotatably supported between a pair of arm members C and D. Therefore, when the rotor W is extended vertically upward in order to increase the output from the output shaft B, the upper arm member C also needs to be moved upward. I have to extend it upward. That is, in the above-described gyromill type wind turbine, the length of the rotary blade F is limited by the output shaft B, and when the rotary blade F is extended, the output shaft B is extended.

Here, in the above-described wind turbine, it is difficult to provide a bearing for supporting the output shaft B between the pair of arm members C and D. For this reason, when the output shaft B is extended in the above-described wind turbine, the long output shaft B is in a cantilevered state, and may be easily broken by wind power. This leads to strength problems.

The problem concerning the strength of the output shaft B is as follows.
As shown in FIG. 9, the problem can be solved by adding an upper bearing portion K to a portion of the output shaft B located further above the upper arm member C. However, when the upper bearing portion K is provided, the upper bearing portion K
It is necessary to provide a connecting member L for connecting the connecting member to the horizontal fixing surface A. In addition, the connecting member L must be provided at a position bypassing the rotational movement area in order to avoid interference with the rotary wing F and the arm members C and D. As a result, the equipment for installing the wind turbine becomes extremely large, which is extremely disadvantageous in terms of installation space and manufacturing cost.

In order to solve the problem of the strength of the output shaft B, there is a method of improving the rigidity of the output shaft B itself. However, in order to ensure sufficient rigidity, the output shaft B
Must be significantly increased in diameter, and is not suitable for practical use as a windmill.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a gyro-mill type wind turbine capable of increasing output from an output shaft without increasing installation space and manufacturing cost. .

[0013]

According to the present invention, there is provided an output shaft rotatably provided with its own axis as a rotation axis, and an output shaft provided around the output shaft and passing through a predetermined turning shaft. A rotating blade that is rotatable about the axis of rotation with the shaft, and that is rotatable about the axis of the diverting axis with respect to the output shaft. In a gyro-mill type wind turbine in which the direction of the rotor is appropriately changed according to the wind direction by rotating about the axis, the tip of the output shaft extends along the axis of the changed shaft in the rotor from the tip end of the output shaft. The arm member extends toward a substantially center portion of the arm member, and a portion between the tip end of the arm member and the rotor is rotatably supported via the deflection shaft.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing one embodiment. FIG. 1 and FIG.
1 shows an embodiment of a gyromill-type windmill according to the present invention, and illustrates a gyromill-type windmill installed in a vertical direction with respect to a horizontal fixed surface A such as the ground.

As is apparent from the figure, in this gyromill type wind turbine, a blade support 10 is provided at the tip of the output shaft 1. The wing support 10 includes a hub member 11 and an arm member 1.
2 and the boss member 13 are integrally formed. The hub member 11 has a substantially cylindrical shape, and has a center hole 11a.
, Is screwed to the distal end of the output shaft 1, and is further fixed via a bolt 14. The arm members 12 protrude radially outward from the four positions at equal intervals on the peripheral surface of the hub member 11 so as to be perpendicular to the output shaft 1. Each arm member 12 has a substantially uniform thickness, and, as is apparent from FIG. 2, has a shape in which the width gradually decreases outward. As shown in FIG. 3, the boss member 13 has a cylindrical shape having a shaft hole 13a at the center, and is provided at the distal end of each arm member 12 via the center in the longitudinal direction. Each boss member 13
As shown in FIG. 1, each axis is parallel to the axis of the output shaft 1, and each end has a length sufficiently protruding from the arm member 12.

Each of the arm members 12 is attached to the wing support 10.
Rotor blades 20 are provided at the tips of the wings, respectively. Rotary wing 2
Reference numeral 0 denotes a plate-shaped member having a streamlined cross section as shown in FIG. 3, and has a notch 20a and a shaft hole 20b at the front end. The notch 20 a is formed to have a size capable of accommodating the boss member 13 of the wing support 10, and is opened at the longitudinal center of the rotor 20.
The shaft hole 20 b has the same inner diameter as the shaft hole 13 a provided in the boss member 13, and extends along the longitudinal direction of the rotor 20.

The rotor 20 has a boss member 13 housed and arranged in the notch 20a.
After the turning shaft 30 is inserted into the b and 13a, the turning shaft 3
0 is fixed to one of the boss member 13 and the rotary wing 20, and is supported by the distal end portion of each arm member 12 via the boss member 13 in such a manner as to rotate around the axis of the deflection shaft 30. I have. The rotor 20 supported in this manner is
As shown in FIG. 1, the arm member 12 protrudes from both the front and back surfaces by a length that is approximately 全長 of the total length, and one end of the arm member 12 reaches a position beyond the front end surface of the output shaft 1. Further, as is clear from the figure, the boss member 13 of the wing support 10 has a length that reaches about ３ of the longitudinal length of the rotary wing 20, and both ends thereof are respectively provided. Since the rotary blade 20 is supported by the rotary blade 20 via the deflection shaft 30, the rotary blade 20 is secured with sufficient strength.
Can be supported. Reference numerals 22 in the drawing denote rectifying plates provided at both ends of each rotor 20.

On the other hand, in the gyro-mill type wind turbine, an operating disk 40 is provided on the surface of each arm member 12. The working disk 40 is a disk-shaped member arranged rotatably around the axis along the output shaft 1, and has a link pin 41 on the surface thereof. The link pin 41 is connected to the axis 40 a of the working disk 40.
It protrudes at a position deviated from the position, and supports the base end of the link rod 42 in a swingable manner. The linking rod 42 has a sufficient length than the diameter of the working disk 40 and has a linking shaft 43 at the tip thereof, so that each rotating blade 20 can swing through the linking shaft 43. Are linked. When the rotary wing 20 swings around the axis of the deflection shaft 30 described above, the link rod 42 transmits the swing of the rotary wing 20 to the operating disk 40, and the operating disk 40 is connected to the arm member 12. Is to be rotated with respect to. In this case, the swing angle of the rotary wing 20 is determined according to the length of the link rod 42 and the distance from the axis 40 a of the working disk 40 to the link pin 41. In the present embodiment, the rotor 20 is moved inward and outward with respect to a tangent S of the circle passing through the axis of the deflection shaft 30 around the axis of the output shaft 1 at the axis of the deflection shaft 30. The length of the link rod 42 and the axis 4 of the working disc 40 are set so that
The distance from 0a to the link pin 41 is set.

In the gyro-mill type wind turbine, a fixed magnet 44 is provided on the surface of each arm member 12, and a pair of disk magnets 45 are provided on the above-mentioned working disk 40. The fixed magnet 44 is a columnar permanent magnet, and is attached to the periphery of the working disk 40 with one of its poles, for example, the north pole facing the working disk 40. The disk magnet 45 is a columnar permanent magnet similar to the fixed magnet 44, and the same pole as the pole facing the working disk 40 in the fixed magnet 44, that is, the N pole is directed toward the outer periphery of the working disk 40. It is attached to the operating disk 40 at two positions in a state where the operating disk 40 is closed. These disc magnets 45 are used for the working disc 40.
Is rotated, in the two states where the axis 40a of the working disk 40, the linking pin 41, and the linking shaft 43 are aligned in a straight line with each other, each N pole faces the N pole of the fixed magnet 44. Are located.

Further, in the gyro-mill type wind turbine, a governor arm 50 and a return spring 51 are provided on the surface of each arm member 12, as shown in FIG. The governor arm 50 has a base end curved along the outer peripheral surface of the working disk 40 and a weight 52 held at the distal end. The governor arm 50 is swingably supported via a governor shaft 53 provided on the surface of the arm member 12, and can move the curved portion toward and away from the inner peripheral surface of the working disk 40. Although not explicitly shown in the drawings, the curved portion of the governor arm 50 and the outer peripheral surface of the working disk 40 are processed to increase the friction coefficient between them.

The return spring 51 is connected to the arm member 1.
The curved portion of the governor arm 50 is always held at a position separated from the outer peripheral surface of the working disk 40 by being interposed between the governor arm 2 and the governor arm 50.

Incidentally, reference numeral 60 in FIG.
1. A casing for covering the arm member 12, the working disk 40, and the governor arm 50, and for reducing air resistance when the output shaft 1 rotates about the output shaft 1.

As shown in FIG. 1, the gyro-mill type wind turbine constructed as described above rotates on the horizontal fixed surface A via the base end of the output shaft 1 with the output shaft 1 arranged vertically. Supported as possible. Here, in this gyromill type wind turbine, as described above, the tip of the output shaft 1 and the substantially central portion in the longitudinal direction of the rotary blade 20 are connected by the arm member 12 of the blade support 10. In FIG. 1, no member is interposed between the lower end of the rotor 20 and the output shaft 1. For this reason, it is possible to support the gyromill type wind turbine through the entire length of the portion of the output shaft 1 located below the blade support 10. That is, as shown in FIG. 1, a cylindrical support 70 is provided on a horizontal fixing surface A, and bearings 71, 7 provided at upper and lower ends of the cylindrical support 70 are provided.
2, it is possible to support the entire length of a portion of the output shaft 1 located below the wing support 10 and the output shaft 1
Can secure sufficient strength.

In the gyromill type wind turbine thus installed, the blade support 10 and the rotary blade 20 can be rotated about the vertical axis together with the output shaft 1, and the blade support 10
In contrast, each rotor 20 can be rotated around the axis of the deflection shaft 30 along the vertical direction.

Now, for example, when the wind blows from above the paper surface in FIG. 5, as shown in FIG. 5, the direction of the rotating blades 20 is changed appropriately, and the output shaft 1 is It will rotate around its axis. That is, in a portion on the left side of the output shaft 1 with respect to the wind direction, the rotor 20 that has received the wind swings around the axis of the deflection shaft 30,
While the posture is such that the wind resistance is always reduced, the swinging of the rotor 20 is restricted by the linking rod 42 and the working disk 40 in the portion on the right side of the output shaft 1. You will receive the wind. Therefore, a torque is generated to rotate the output shaft 1 clockwise. For example, if a generator shaft (not shown) is connected to the output shaft 1, power can be generated using wind power. Will be able to

Here, also in the gyromill type wind turbine described above, when the output from the output shaft 1 is to be increased, the rotating blades 20 may be extended vertically upward. In this case, as shown in FIG. 1, according to the gyromill type wind turbine, the arm member 12 is disposed between the center of the rotary wing 20 and the upper end of the output shaft 1, so that the output shaft 1
Does not limit the length of the rotor 20. Therefore, the rotor 20 can be extended without extending the output shaft 1, and the output from the output shaft 1 can be increased without increasing the installation space and manufacturing cost associated with the extension of the output shaft 1. Can be increased.

Further, as described above, the entire length of the portion of the output shaft 1 located below the wing support 10 is supported by the cylindrical column 70, so that the strength of the output shaft 1 is sufficiently ensured. It can be extended in the state where it was done. As a result, the rotor 20 can be further extended, and the output from the output shaft 1 can be further increased.

During the operation described above, in the gyromill type wind turbine described above, the rotating blades 20 change their directions before and after the positions corresponding to 3 o'clock and 9 o'clock in FIG. 5, respectively. As a result, the working disk 40 rotates around its axis 40a via the link rod 42. In this case, the axis 40a of the working disk 40, the link pin 4
In a state where three of 1 and the link shaft 43 are aligned on a straight line, it is difficult to rotate the working disk 40 due to the swing of the rotor 20. However, according to the gyro-mill type windmill, when the above-mentioned three members are arranged in a straight line during rotation of the working disk 40, the disk magnet 45 attached to the working disk 40 and the fixed magnet 44 provided on the arm member 12. Are arranged with the same N pole facing each other, so that the repulsive force of the magnets 45 and 44 allows the rotation of the working disk 40 to continue smoothly. As a result, there is no possibility that a situation in which the swing of the rotary wing 20 is prevented will occur, and it is possible to continuously obtain the rotational force via the output shaft 1. The position at which the rotary wing 20 changes its direction is determined by appropriately adjusting the swing angle of the rotary wing 20, that is, the length of the link rod 42 and the distance from the axis 40a of the working disk 40 to the link pin 41. Can be arbitrarily changed by appropriately adjusting. Further, if the swing angle of the rotary wing 20 is changed, it is also possible to change settings such as whether to emphasize the rotation speed of the output shaft 1 or the output torque from the output shaft 1.

In this type of gyromill type wind turbine, when a gust is blown due to, for example, a typhoon, the rotation speed of the output shaft 1 abnormally rises, which may cause damage to various places. is there.

However, in the gyromill type wind turbine described above, when the rotation speed of the output shaft 1 increases due to the gust,
The centrifugal force acting on the weight 52 provided on the governor arm 50 increases, and as shown in FIG. 6B, the curved portion of the governor arm 50 resists the spring force of the return spring 51 and the outer peripheral surface of the working disk 40. To be pressed against. In this state, the rotation of the working disk 40 with respect to the arm member 12 is prevented, so that the arm member 12
Swing of the rotor 20 with respect to the rotation of the wind turbine is prevented, and even if the rotor 20 is prevented from swinging in any direction, the balance of the wind turbine as a whole is lost and the rotation speed is reduced. For example, the rotor 20 on the left side of the output shaft 1 in FIG. 5 acts to provide wind resistance, and the rotation speed of the output shaft 1 decreases.

On the other hand, when the rotation speed of the output shaft 1 decreases, the centrifugal force acting on the weight 52 provided on the governor arm 50 decreases, and as shown in FIG. The governor arm 50 is returned to a state separated from the peripheral surface of the working disk 40 again.
In this state, the rotation of the working disk 40 is allowed, so that the direction of the rotor 20 can be changed appropriately according to the wind direction, and the rotation speed of the output shaft 1 increases again. .

As a result, according to the gyro-mill type wind turbine, the number of rotations of the output shaft 1 is automatically controlled within a predetermined range. Can be prevented. The control of the rotation speed of the output shaft 1 by the governor arm 50 described above can be easily adjusted by appropriately changing the weight of the weight 52 and the spring force of the return spring 51.

As described above, according to the gyromill type wind turbine, the arm member 12 is disposed between the center of the rotary blade 20 and the upper end of the output shaft 1. Does not limit the length of the rotor 20. Therefore, the rotor 20 can be extended without extending the output shaft 1, and the output from the output shaft 1 can be increased without increasing the installation space and manufacturing cost associated with the extension of the output shaft 1. Can be increased.

In addition, since the entire length of the portion of the output shaft 1 located below the wing support 10 is supported by the cylindrical support 70, the output shaft 1 can be extended with sufficient strength. Can be achieved. As a result, the rotor 20 can be further extended, and the output from the output shaft 1 can be further increased.

In the above-described embodiment, the wind turbine installed on the horizontal fixed surface is exemplified. However, the present invention is not limited to this, and may be installed on an inclined surface, for example. Further, although a windmill provided with four rotating blades 20 is illustrated, the number of rotating blades 20 does not necessarily have to be four. Furthermore, a wind turbine in which the turning axis 30 of the rotary wing 20 is parallel to the output shaft 1 is illustrated, but the turning axis 30 may be inclined with respect to the output shaft 1. In addition, since the boss member 13 is provided at the tip of the arm member 12 and the space between both ends of the boss member 13 and the rotary blade 20 is supported by the deflection shaft 30, the support of the rotary blade 20 is supported. Although sufficient strength can be ensured, it is not always necessary to provide a boss member.

[0036]

As described above, according to the present invention,
Since the arm member is arranged between the center of the rotor and the tip of the output shaft, the rotor can be extended without extending the output shaft. Therefore, it is possible to increase the output from the output shaft without causing an increase in installation space and manufacturing cost due to the extension of the output shaft. Moreover, a bearing portion can be added to a portion of the output shaft located closer to the base end than the arm member. Therefore, it is possible to extend the output shaft in a state where the strength of the output shaft is sufficiently secured, and it is possible to further increase the output from the output shaft.

[Brief description of the drawings]

FIG. 1 is a cross-sectional side view showing one embodiment of a gyromill type wind turbine according to the present invention.

FIG. 2 is a plan view of the gyromill type wind turbine shown in FIG.

3A is an exploded side view of a main part of the gyromill type wind turbine shown in FIG. 1, FIG. 3B is a sectional view taken along line bb in FIG. 3A, and FIG. 3C is a gyromill shown in FIG. FIG. 2D is a side view of a main part of the type wind turbine, and FIG. 2D is a sectional view taken along line dd in FIG.

FIG. 4 is a main part plan view showing a direction changing means of a rotor blade applied to the gyromill type wind turbine shown in FIG. 1;

FIG. 5 is a plan view showing a rotation mode of a rotor in the gyromill type wind turbine shown in FIG.

FIG. 6 is a plan view of a main part showing rotation control means applied to the gyromill type wind turbine shown in FIG. 1;

FIG. 7 is a side view showing a conventional gyromill type wind turbine.

FIG. 8 is a plan view showing a rotation mode of a rotor in the gyromill type wind turbine shown in FIG. 7;

FIG. 9 is a side view showing a state in which a rotor is extended in the gyromill type wind turbine shown in FIG. 7;

[Explanation of symbols]

 Reference Signs List 1 output shaft 10 blade support 12 arm member 13 boss member 20 rotating blade 30 turning axis

Claims (1)

[Claims] 1. An output shaft rotatably provided with its own axis as a rotation axis; and an output shaft provided around the output shaft and together with the output shaft via a predetermined turning shaft around the rotation axis. A rotating blade that is rotatable and rotatable around the axis of the diverting axis with respect to the output shaft, by rotating the wing about the axis of the diverting axis. A gyromill-type wind turbine in which the direction of the rotor is appropriately changed in accordance with the wind direction, wherein the arm is directed from a tip end of the output shaft to a substantially central portion along an axis of the changed shaft in the rotor. A gyro-mill type windmill wherein a member is extended and a tip end of the arm member and the rotor are rotatably supported via the deflection shaft.