JP2005009415A - Automatic rotation adjustment device of windmill for wind power generation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein, in a wind power generator with a direction of blades being varied to be in parallel with a direction of wind to reduce a wind receiving area under strong wind, as the hard blades are used, wind noise is loud and danger is caused when a blade is broken and a fragment flies off, and the device is too large to be installed in an urban area. <P>SOLUTION: A sail blade 1 made of flexible and tough canvas is formed, sail yard members 2, 3 are mounted on a front end and a rear end of the sail blade, and a toroidal front hub member 4 and a toroidal rear hub member 6 are radially respectively mounted on the front sail yard member and the rear sail yard member. A rotary shaft 7 with both ends being projected is inserted in the both hub members, a speed governing balancer 12 is mounted to the rear hub member to hold the rotary shaft, a connecting rod 14 along the rotary shaft 28 connected to a sliding cylindrical body 16 integrated with the front hub member, and a spring receiver 19 is provided to a front end of the rotary shaft to elastically install a return spring 20 to the sliding cylindrical body and the spring receiver. A spiral long hole 16a is provided in the sliding cylindrical body, a locking pin 21 implanted in the rotary shaft is loosely fitted, and rotation force of the rotary shaft is transmitted to a motor. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic rotation adjusting device for a wind turbine for wind power generation.
[0002]
[Prior art]
1. Combined blades as a wind turbine variable wind turbine that automatically adjusts the received wind force according to the strength of the wind force and automatically reduces the received wind pressure against strong winds such as gusts and windstorms to avoid blade damage A spring groove 4-1 and a spring groove 4-2 are formed so as to intersect with the blade shaft insertion groove 3 formed in the longitudinal direction of one inner surface of the blade 5 and offset in the rotational direction. There is a device in which the part is loosely fitted in the spring groove 4-1 and the spring groove 4-2, and the intermediate part is fixed to the blade shaft 1, and when the blade 5 rotates, one end of the winding spring 2 is wound, The groove 4-1 is slid and retracted, and the other end is rewound so that the spring groove 4-2 is slid and extended. When the blade 5 is in a weak wind state, the winding spring 2 is rewound and unwound. Therefore, the wind receiving area is maximized and the moment centered on the blade axis 1 works under strong winds. 5 is wind receiving surface becomes substantially zero rotates to an angle substantially parallel with respect to the wind direction, the wind turbine will shake stops rotating - are not be subjected to vortex load de 5. (For example, see Utility Model Reference 1)
2. The rotor blade 1 is composed of a blade plate 11 fixed along the longitudinal direction of a wind shaft 12 extending substantially orthogonal to the axis of the power transmission shaft 2 and including an elastic deformation portion 11a. There is a rotation stabilization mechanism for a windmill that constantly and stably takes out the blade plate 11 according to energy. (For example, see Utility Model Document 2)
3. The blade 2 is fixed to the blade receiver 3, the blade shaft 6 is provided so as to be shifted from the center line of the blade receiver 3 in the windmill rotating direction, and the blade shaft 6 is rotated to the housing head 8. The spring 10 is interposed between the blade 2 and the housing 4 so as to urge the blade 2 in the pitch decreasing direction, and the blade shaft 6 is displaced when receiving wind. While receiving torque in the pitch increasing direction and receiving torque in the pitch decreasing direction by the spring 10, the pitch change degree can be adjusted by selecting the spring 10. (For example, see Patent Document 1)
4). A holder-3 formed integrally with the blade shaft 2, a frame 6 supporting the holder-3 via a pin 4 attached to the main shaft flange 5, and a blade shaft end 2a. Provided with a connecting rod 7 and a support column that supports the connecting rod 7 via a self-aligning roller bearing 8 attached to the spindle flange 5, and further includes a spring hydraulic shock absorber 10 that presses the upper surface of the holder-3 with a piston rod, . Since the blade shaft 2 and the connecting rod 7 are constrained to each other, the blade shaft 2 rotates around the axis as a relief for the rotation of the holder-3, and the pitch angle of the blade 1 (For example, refer to Patent Document 2)
[0003]
[Utility model document 1]
Registered Utility Model No. 3002361 (Fig. 2)
[0004]
[Utility model document 2]
Registered Utility Model No. 3071880 (FIG. 2)
[0005]
[Patent Document 1]
Japanese Patent Laying-Open No. 2003-42053 (FIG. 1)
[0006]
[Patent Document 2]
Japanese Patent Laid-Open No. 7-4345 (FIG. 1)
[0007]
[Problems to be solved by the invention]
1. The idea of the utility model 1 is to change the pitch of the blade shaft 1 in parallel with the wind direction under strong wind to avoid the wind direction facing, but the internal structure of the blade 5 is complicated.
[0008]
2. In the invention according to Utility Model Document 2, the rotor blade 1 itself is composed of a blade plate 11 including an elastic deformation portion 11a, and the blade plate 11 is elastically deformed in proportion to the wind pressure, and the wind pressure increases. The wind receiving area is reduced.
[0009]
3. The invention according to Patent Document 1 is a variable pitch mechanism in which the pitch of the blade 2 connected to the housing 4 so as to be rotatable is set according to the wind pressure.
4). The invention according to Patent Document 2 is a mechanism for changing the blade 1 itself to a blade angle corresponding to the wind pressure.
[0010]
In the above-mentioned conventional inventions and devices, the blade itself is hard made of metal or plastic and has high wind noise. Further, if the blade is blown and scattered by strong wind, it may cause harm to human livestock. In addition, it is a large-scale wind power generator installed in a remote place and not a compact device that can be installed in a densely populated area.
[0011]
[Means for Solving the Problems]
A sail-shaped wing 1 made of a flexible and strong canvas having a plurality of leaves is formed, and a sail girder member 2 is attached to the front end of the sail-shaped wing 1 and a sail girder member 3 is attached to the rear end.
[0012]
The base portion of the front girder member 2 is pivotally attached to a donut-shaped front hub member 4 by means of pins 5, and the base portion of the rear sail girder member 3 is radially attached to a donut-shaped rear hub member 6.
[0013]
A rotating shaft 7 having both ends protruding over the front hub member 3 and the rear hub member 6 is inserted.
[0014]
The rear hub member 6 is positioned and attached to the rear portion of the rotating shaft 7 with fixing bolts 8.
[0015]
A pair of mounting brackets 9 are attached to the surface of the rear hub member 6 on the side facing the front hub member 4 with the rotary shaft 7 interposed therebetween.
[0016]
A speed control balancer 12 in which a connecting bracket 11 is attached to a semi-disc-shaped weight 10 is pivotally attached to the mounting bracket 9 with pins 13.
[0017]
A pair of connecting rods 14 are provided side by side so as to follow the rotating shaft 7, and the base ends of the connecting rods 14 are connected to the free ends of the connecting fitting 11 by pins 15.
[0018]
A slide cylinder 16 integrated with the front hub member 4 is placed on the tip of the rotating shaft 7, and the tip of the linkage 14 is connected to the slide cylinder 14 with a pin 17.
[0019]
A spring receiving nut 19 is attached to the shaft end 7 a of the rotating shaft 7, and a return spring 20 is mounted between the front hub member 4 and the spring receiving nut 19.
[0020]
A spiral long hole 16 a is provided in the slide cylinder 16, and a locking pin 21 planted on the rotary shaft 7 is loosely fitted.
[0021]
A rearward projecting end of the rotating shaft 7 is supported by a bearing 23 provided on the support leg 22, and a power transmission device to the generator 24 is attached to the rearward projecting end of the rotating shaft 7.
[0022]
Constructed in this way, the wind noise is lowered and the power is quietly generated under normal wind, and the sail wings are deflated and the strong wind does not blow through under strong winds. However, since it is made of canvas, it aims to provide a power generation device that does not cause harm to human livestock and can safely generate power even in densely populated urban areas.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view showing a state in which a sail-shaped wing 1 made of canvas receives wind and swells in a full sail shape in a normal wind, and FIG. 2 shows that the sail-shaped wing 1 is deflated during a strong wind and is almost parallel to the wind direction. FIG. 6a shows a state in which the sail-shaped wing 1 opens at 45 degrees in a plan view with respect to the wind direction and is swollen in a full wind, and FIG. 6b shows a sail in a strong wind. The figure shows that the blade 1 is substantially parallel to the wind direction in a plan view and a strong wind passes through it.
[0024]
A sail-shaped wing 1 made of a flexible and strong canvas having a plurality of leaves is formed, and a sail girder member 2 is attached to the front end of the sail-shaped wing 1 and a sail girder member 3 is attached to the rear end. The base part of the other sail girder member 3 is radially attached to the donut-shaped rear hub member 6.
[0025]
A rotating shaft 7 having both ends protruding over the front hub member 3 and the rear hub member 6 is inserted.
[0026]
The rear hub member 6 is positioned and attached to the rear portion of the rotating shaft 7 with fixing bolts 8.
[0027]
A pair of mounting brackets 9 having a U-shaped cross section are mounted on the surface of the rear hub member 6 facing the front hub member 4 with the rotary shaft 7 interposed therebetween.
[0028]
A speed control balancer 12 formed by attaching a semi-disc-shaped weight 10 having a U-shaped cross-section and a substantially triangular connecting bracket 11 is pivotally attached to a mounting bracket 9 of the rear hub member 6 by a pin 13.
[0029]
A pair of connecting rods 14 are provided side by side so as to follow the rotating shaft 7, and the base ends of the connecting rods 14 are connected to the free ends of the connecting fitting 11 by pins 15.
[0030]
A slide cylinder 16 integrated with the front hub member 4 is placed on the tip of the rotating shaft 7, and the tip of the linkage 14 is connected to the slide cylinder 16 with a pin 17.
[0031]
A spring receiving nut 19 is attached to the shaft end 7 a of the rotating shaft 7, and a return spring 20 is mounted between the front hub member 4 and the spring receiving nut 19.
[0032]
A spiral long hole 16 a is provided in the slide cylinder 16, and a locking pin 21 planted on the rotary shaft 7 is loosely fitted.
[0033]
A rearward projecting end portion of the rotating shaft 7 is supported by a bearing 23 provided on the support leg 22, and a pulley 24 is attached to the rearward projecting end portion of the rotating shaft 7 and is belted with a drive shaft of the generator 25.
[0034]
In addition, although the thing of illustration shows the cantilever type which supports a rotating shaft in a base end part, it can also be made into the double-supported type which supports the both ends of a rotating shaft.
[0035]
A support plate 26 to which the support leg 22 is attached is rotatably mounted on a pedestal 27 so that the apparatus is always faced in the wind direction.
[0036]
As another embodiment, as shown in FIG. 3, a bevel gear 28 is attached to the rear end of the rotary shaft 7 supported by a support leg 22 via a bearing 23 and meshed with a bevel gear 29 attached to a drive shaft of the generator 25.
[0037]
As a mechanism in which the bearing member 30 is rotatably attached to the trunk portion of the generator 25 fixed to the pedestal 27 and the lower end of the support leg 22 is attached to the bearing member 30, the apparatus can always face the wind direction.
[0038]
The operation of the present invention will be described.
1, 4, and 6 a, the sail wing 1 is fully sailed in a normal wind, and the weight 10 of the speed control balancer 12 maintains an appropriate balance. The joint 14 is in a normal position and rotates together with the rotary shaft 7. Further, the locking pin 21 is locked to one end of the spiral long hole 16a, and the slide cylinder 16 integrated with the front hub member 4 is also in a normal position.
[0039]
2, 5 and 6b show that during strong winds, the sail wings 1 are deflated with respect to the wind direction, so that the strong wind blows through the sail wings 1 and the rotating shaft 7 does not rotate excessively to damage the equipment. It shows the state to do. When the rotation shaft 7 starts to over-rotate, the weight 10 of the speed control balancer 12 is expanded in a direction away from the rotation shaft 7 by centrifugal force, and the connection fitting 11 integrated with the weight 10 is also expanded using the pin 15 as a fulcrum. Therefore, the connecting rod 14 integrally connected by the pin 15 is pushed up, and the front hub member 4 integrated with the slide cylinder 16 integrally connected by the connecting rod 14 and the pin 17 is used as the elastic force of the return spring 20. The locking pin 21 is locked against the other end of the spiral long hole 16a and pushes down the front hub member 4, and the sail girder member 2 integrated with the front hub member 4 is also pushed down. However, the rotating shaft 7 does not rotate because strong wind blows through.
[0040]
When the strong wind stops blowing, the front hub member 4 integrated with the slide cylinder 16 is pushed back by the resilient force of the return spring 20, and the locking pin 21 slides through the spiral long hole 16a and returns to its original position at one end. Then, the linkage 14 is pushed down and the speed control balancer 12 also returns to the normal position, and the sail-shaped wing 1 swells in a full sail shape, and smoothly rotates to start generating electricity.
[0041]
【The invention's effect】
Under normal wind, the sail wing 1 is fully sailed and rotates normally. Since the sail wing 1 is made of canvas, the wind noise is low and power can be generated silently. Under strong wind, the sail wing 1 is deflated and the strong wind blows through. Since the shaft 7 does not rotate, the equipment is not damaged. In the unlikely event that the sail wing 1 is blown off, it is made of canvas, so there is no risk of harm to human livestock, and it can be safely and compactly installed in a densely populated urban area.
[Brief description of the drawings]
FIG. 1 is a plan view showing a state in which a sail wing swells in full sail under normal wind and is operating normally.
FIG. 2 is a plan view showing a state in which the sail-shaped wing is deflated and the rotation is stopped under a strong wind.
FIG. 3 is a front view showing another embodiment of the power transmission device of the present invention.
FIG. 4 is a front view showing a state in which a sail-shaped wing swells like a full sail under normal wind and is operating normally.
FIG. 5 is a front view showing a state in which the sail wing is deflated and the rotation is stopped under strong wind.
FIG. 6A is an explanatory view showing a state in which the sail wings open at 45 degrees in a plan view with respect to the wind direction and receive wind and swell in a full sail shape during normal wind.
b is an explanatory view showing a state in which a strong wind passes when a sail wing is deflated in a direction substantially parallel to the wind direction in a plan view during strong wind.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sail-shaped wing | wing 2, 3 Sail girder member 4 Front hub member 6 Rear hub member 7 Rotating shaft 9 Mounting bracket 10 Weight 11 Connecting bracket 12 Speed control balancer 5, 13, 15, 17 Pin 14 Joint 16 Slide cylinder 16a Spiral Long hole 19 Spring receiving nut 20 Return spring 21 Locking pin 25 Generator

Claims (1)

A sail-shaped wing 1 made of a flexible and strong canvas having a plurality of leaves is formed, and a sail girder member 2 is attached to the front end of the sail-shaped wing 1 and a sail girder member 3 is attached to the rear end.
The base portion of the front sail girder member 2 is pivotally attached to the donut-shaped front hub member 4 by means of pins 5, and the rear sail girder member 3 is radially attached to the donut-shaped rear hub member 6.
A rotating shaft 7 having both ends protruding over the front hub member 3 and the rear hub member 6 is inserted.
The rear hub member 6 is positioned and attached to the rear portion of the rotating shaft 7 with fixing bolts 8.
A pair of mounting brackets 9 are attached to the surface of the rear hub member 6 on the side facing the front hub member 4 with the rotary shaft 7 interposed therebetween.
A speed control balancer 12 in which a connecting bracket 11 is attached to a semi-disc-shaped weight 10 is pivotally attached to the mounting bracket 9 with pins 13.
A pair of connecting rods 14 are arranged side by side so as to follow the rotating shaft 7, and the base ends of the connecting rods 14 are connected to the free ends of the connecting fitting 9 by pins 15.
A slide cylinder 16 integrated with the front hub member 4 is placed on the tip of the rotating shaft 7, and the tip of the linkage 14 is connected to the slide cylinder 14 with a pin 17.
A spring receiving nut 19 is attached to the shaft end 7 a of the rotating shaft 7, and a return spring 20 is mounted between the front hub member 4 and the spring receiving nut 19.
A spiral long hole 16a is provided in the slide cylinder 16, and a locking pin 21 planted on the rotary shaft 7 is loosely fitted.
An automatic rotation adjusting device for a wind turbine for wind power generation, in which a rear projecting end portion of the rotating shaft 7 is supported by a bearing 23 provided on a support leg 22 and a power transmission device to a generator 24 is attached to the rear projecting end of the rotating shaft 7. .

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