JP2008133789A - Power transmission device for wind power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently transmit a wind force to a rotation body by concentrating the wind force only to one side (a wind arresting surface) of a spiral blade. <P>SOLUTION: In a power transmission device for a wind power generator, the rotation body B has the wind arresting surface with a protrusion part and a recessed part for arresting wind working on a wind receiving surface. On the other hand, a surface for receiving adverse wind rotatably supports a wind shield plate 5 for preventing the adverse wind from working in a range covering a whole area in a vertical direction of a spiral blade 2 outside the rotation body B in a manner rotatable concentric with the rotation body B to release the wind working on the surface. Thus, it is possible to concentrate the wind force on the arresting surface of the spiral blade 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vertical spiral blade power transmission device for a wind power generator having an axial direction vertical.

As prior art document information related to the motive power transmission apparatus of the present invention, for example, there is Patent Document 1 below.
JP-A-9-68152

  In the exemplified patent document, a spiral blade having a receiving surface portion on which wind force acts is arranged with respect to the outer periphery of a vertical rotating shaft whose vertical direction is the axial direction, and the spiral direction is along the axial direction of the rotating shaft. Discloses a vertical spiral blade type driving force transmission device (wind power driving device) including a rotating body arranged so as to protrude in the radial direction of the rotating shaft.

First, regarding the wind, a wind that rotates as a tail wind in the rotating body is assumed to be a normal wind, and a wind that becomes a counter wind and blocks the rotation is described as a reverse wind.
By the way, in order to efficiently transmit the wind force acting on the spiral blade to the rotating body, all or most of the force is applied only to the one-way side surface, that is, the forward wind receiving surface portion with the axis of the main shaft as a boundary. preferable.
However, due to the structure of the spiral blade, in the side view (direction in which the wind force acts), the forward wind receiving surface portion and the reverse wind receiving surface portion of the spiral blade are divided into left and right with respect to the axis of the main shaft and are oriented in the same direction, When the force with respect to the spiral blade acts on both the forward wind receiving surface portion and the reverse wind receiving surface portion with the same force, the wind force is antagonized, and it may be said that the wind force cannot be efficiently transmitted to the rotating body.

  An object of the present invention is to efficiently transmit wind power to a rotating body, and an object of the present invention is to provide a power transmission device for a wind power generator that solves this problem.

  In order to achieve the above object, the technical means employed by the present invention includes a rotating body in which a spiral blade for rotating by wind power is provided on the outer periphery of the main shaft whose axial direction is vertical. In the power transmission device for a wind power generator, the spiral blade is used as a wind collecting surface having a convex portion or a concave portion that collects the forward wind acting on the rotating body, while it escapes to the surface on which the reverse wind acts. A wind power generator, characterized in that a windbreak plate, which prevents the spiral blades from reacting in a range over the entire vertical direction of the spiral blade, is supported on the outside of the rotating body so as to be rotatable concentrically with the rotating body. It is a transmission device.

  From the viewpoint of more efficiently transmitting the wind power to the rotation of the rotating body, it is preferable that the windshield plate is moved according to the wind direction, and a guide plate / wind direction plate that maintains the airflow direction state is provided in a row.

  In this case, in order to prevent damage to the spiral blades caused by extremely strong winds such as typhoons and storms and to control the generation of excessive power, the windshield plate is made to face the wind catching surface over the entire vertical direction of the spiral blades. And a control plate for controlling the amount of air acting on the air collecting surface is integrally provided, and the control plate rotates concentrically with the wind shield plate in such a direction that one end portion thereof expands and contracts with respect to the wind shield plate. Thus, it is preferable to include an adjusting unit that is supported so as to be able to adjust the air volume with respect to the wind catching surface and that automatically adjusts according to the wind force.

  According to the transmission device for wind power generators of the present invention, wind force can be concentrated only on one side (wind collecting surface) of the spiral blade, and therefore the wind force can be efficiently transmitted to the rotating body.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out a power transmission device for a wind power generator according to the present invention will be described below with reference to the drawings.

  A power transmission device for wind power generator (hereinafter abbreviated as “transmission device”) A of this embodiment is rotatably fitted to the outer periphery of the main shaft 1 fixed to the foundation H with the axial direction as vertical. A rotating body B that is disposed outside the rotating shaft 10 and includes a rotating body B that is arranged on the outside of the rotating shaft 10 and that rotates the rotating shaft 10 by the normal wind 3, and is located outside the rotating body B. A windshield plate 5 that is concentrically supported by the main shaft of the rotating body B and that is rotatably supported to prevent the headwind 4 is provided.

Reference symbol H in the figure is a foundation for fixing the main shaft 1. The pedestal D is provided on the foundation H and supports the wind guide member C and the lower side of the control plate 7 described later. Reference numeral E denotes a top plate that supports the main shaft 1, the wind guide member C, and the upper side of the control plate 7, and supports the wind shield plate 5, the wind guide member C, and the control plate 7 across the base D and the top plate E. is doing.
Reference sign D <b> 1 is a discharge hole for discharging rainwater or snow reaching the upper surface of the base D.

Reference symbol F in the figure is a guide rail that rotates and guides the wind guide member C and the control plate 7, and is arranged on the upper surface of the pedestal D and the lower surface of the top E so as to surround the main shaft as a concentric circle with the main shaft 1. Is provided.
The guide rail F is formed with an outer fitting protrusion F1 with which the wind guide member C is fitted and an inner fitting protrusion F2 with which the control plate 7 is fitted.

  Reference symbol G in the figure denotes a generator having a rain / snow cover G1 on the upper side. For example, the lower end portion of the rotating body B fitted into the generator G is provided with a power generation means ( (Not shown) and the rotation of the rotating body B can be transmitted to the power generation means to generate power.

Hereinafter, the transmission device A of this embodiment will be described in detail.
The main shaft 1 is fixed to the foundation H so as not to fall over the reference wind force.
The spiral blade 2 has one surface as a wind collecting surface 30 that collects the normal wind 3 acting on the surface, and the other surface is a non-uneven wind surface 40, and the wind surface 40 acts on the surface. It is blocked by a wind shield 5 that escapes the counter wind 4 and prevents the counter wind 4 from acting.
The wind catching surface 30 is located between the wind catching wall 31 erected over the entire outer edge of the spiral blade 2, the inside of the wind catching wall 31 and the rotating body, and along the spiral direction of the spiral blade 2. And a plurality of recessed portions 3A formed by a plurality of standing air collecting partitions 32 so that the wind acting on the air collecting surface 30 can be efficiently captured by the recessed portions 3A. I have to.
That is, according to the rotating body B of this embodiment, the wind acting on the wind collecting surface 30 and the reverse wind surface 40 which are divided into the left and right sides with the axis of the main shaft 1 as the boundary, and the wind collecting surface 30 has a plurality of concave shapes. While the part 3 </ b> A catches wind, the wind force can be efficiently transmitted to the rotation of the rotating body B by letting it escape at the reverse wind surface 40.
The above-mentioned rotating body B is composed of the spiral blade 2, the wind collecting wall 31, the wind collecting partition wall 32 and the like, and the upper and lower parts are rotated between the top E and the base D by bearings (not shown). The lower part is connected to the generator G and transmits power.
In addition, in this form, although the said wind catching surface illustrated the form comprised by the some concave part comprised by the wind catching wall and the wind catching partition, in this invention, it does not limit to the illustrated concave part. Further, it may be a ridge portion formed by standing only the wind-capturing partition wall in the concave portion (not shown).

  The wind guide member C extends across the entire vertical direction of the spiral blade 2 to prevent the wind force from acting against the wind direction toward the reverse wind receiving surface portion, and the wind shield plate 5 according to the wind direction. And a control plate 7 for controlling the amount of air acting on the air collecting surface by facing the air collecting surface. And the control means 7 is provided with the adjustment means 8 which adjusts the air volume with respect to a wind catching surface automatically according to the strength of a wind.

The windshield plate 5 is fitted to the windshield plate body 51 having a substantially 1/4 circumference of the outer fitting projection F1 in a plan view, and the outer fitting projection F1 at the upper and lower ends of the windshield plate body 51. A fitting recess 52 is provided.
The guide plate 6 extends continuously outward from the guide rail F from the rear end side of the windshield main body 51, and when wind acts on the extended wind guide member C, The windbreak plate 5 moves so as to be pushed by the wind force, and the windbreak plate 5 is constantly opposed to the headwind by this movement.
The rear end side of the windshield main body 51 referred to in this embodiment is the guide plate 6 side, and the end opposite to the guide plate 6 is referred to as the front end side.
Reference numeral 63 denotes a wind direction plate for holding the direction of the guide plate 6 so as not to deviate by receiving wind.

Specifically, the front end portion of the guide plate 6 extended from the rear end portion of the windshield main body 51 faces the front end side of the windshield main body 51 across the main shaft 1, and the windshield main body. 51. It is located on the plane center line of the main shaft 1 extended from the other end of 51, and is parallel to the plane center line. When the guide plate 6 is parallel to the wind direction, the movement is stopped. .
And when the front-end | tip part of the guide plate 6 becomes parallel to a wind direction, the said windshield plate 5 opposes a wind direction. The wind is not applied to the reverse wind receiving surface, and the wind is applied only to the air catching surface.
In addition, when the wind direction changes, the wind again acts on the guide plate 6 to move the guide plate 6, thereby moving the wind removal plate 5.
That is, according to the wind guide member C composed of the wind shield plate 5 and the guide plate 6 of this embodiment, wind can be efficiently applied to the wind catching surface regardless of the wind direction.

Further, the wind guide member C of the present embodiment is provided with the control plate 7 and the adjusting means 8 that automatically adjusts the air volume with respect to the wind catching surface according to the strength of the wind. .
The control plate 7 has a control plate main body C11 that is substantially ８ of the inner fitting protrusion F2 in a plan view, and a fitting that is fitted to the inner fitting protrusion F2 on the upper and lower ends of the control plate main body C11. It is configured to include a recess C12, and protrudes from the front end side of the windshield plate 5 from the state of being accommodated between the windshield plate 5 and the rotary body B so as to move.
The adjusting means 8 includes a wind receiving plate 81 that is supported on the surface of the guide plate 6 so as to be movable, a pusher 82 for projecting and retracting the control plate 7 according to the amount of movement, and these wind receiving plates. The cable 83 is wired between the plate 81 and the pusher 82.

The pusher 82 according to the present embodiment is exemplified by the control plate 7 that appears and disappears by hydraulic pressure.
Specifically, the hydraulic pressure is applied so that the control plate 7 can be moved in and out by the operation cable 83. Normally, the hydraulic pressure is applied to the pusher 82 in the direction of holding the storage state of the control plate 7, The hydraulic pressure acts in a direction that prevents the wind receiving plate 81 from moving through the operation cable 83.
In addition, when wind force exceeding the hydraulic pressure in a direction that prevents the movement of the wind receiving plate 81 is applied to the wind receiving plate 81 via the operation cable 83, the wind receiving plate 81 moves against the hydraulic pressure. Then, the operation cable 83 is pulled, and the operation cable 83 is pulled to exert a hydraulic pressure in the direction in which the control plate 7 is pushed out by the pulling force.
Further, the pulling amount of the operation cable 83 is increased or decreased according to the strength of the wind force with respect to the wind receiving plate 81, and the hydraulic pressure in the direction of pushing the control plate 7 against the pusher 82 is increased or decreased according to the pulling amount. In this manner, by adjusting the amount of protrusion of the control plate 7 according to the strength of the hydraulic pressure, the air volume with respect to the air collecting surface can be adjusted according to the strength of the wind force of the control plate 7.
That is, according to the wind guide member C of the present embodiment, the air volume with respect to the wind catching surface can be automatically adjusted by the configuration of the control plate 7 and the adjusting means 8. It can prevent the spiral blades from being damaged by strong winds and control the generation of excessive power.
In addition, the protrusion amount of the control board 7 corresponding to a wind force and the timing of a protrusion start can be changed by setting the force of the said hydraulic pressure arbitrarily.
The pusher of this embodiment can be a bellows type or a telescopic type that expands and contracts by hydraulic pressure.

That is, in this embodiment, a power transmission device for a wind power generator including a rotating body in which a spiral blade for rotating the rotating shaft by wind power is disposed on the outer periphery of the rotating shaft whose vertical direction is the axial direction. In the above, the spiral blade has one surface as a supplementary wind surface having a convex portion or / and a concave portion that collects wind acting on the surface, and the other surface has wind acting on the surface. Rotate a windbreak plate that is a flat reverse wind surface that escapes, and that faces the reverse wind surface outside the rotating body over the entire vertical direction of the spiral blade so that no wind acts on the reverse wind surface. It is characterized by being supported so as to be rotatable concentrically with the rotation axis of the body.
In addition, the windshield plate is provided with a guide plate that rotates the windshield plate according to the wind direction and keeps the windshield plate facing the reverse wind surface.
The windshield plate is integrally provided with a control plate for controlling the amount of air acting on the auxiliary airflow surface so as to face the auxiliary airflow surface in a range over the entire vertical direction of the spiral blade. The control plate can adjust the amount of opposition to the auxiliary wind surface by rotating concentrically with the rotational axis of the windshield plate in such a direction that one end portion thereof expands and contracts with respect to the windshield plate. It is characterized in that the facing amount is adjusted by adjusting means that is supported by and automatically adjusted according to the wind force.

In addition, the form of the adjusting means for adjusting the appearance of the control plate includes forms other than those illustrated by the illustrated hydraulic pressure. For example, the movement amount of the wind receiving plate is detected, and the detection result is based on the detection result. The form which electrically controls so that the amount of appearance of the control board may be adjusted is mentioned (not shown).
Moreover, although the form provided with the wind guide member is shown in the form exemplified above, the present invention may not be provided with the exemplified wind guide member but may be constituted only by the rotating body having the above-described structure. However, the wind force can be transmitted to the rotation of the rotating body B by the action of the wind collecting surface and the reverse wind surface of the rotating body described above.
In the illustrated embodiment, one spiral blade is rotated once with respect to the main shaft. However, the efficiency is improved by providing a plurality of spiral blades.
Further, the present invention is not limited to the illustrated embodiments, and can be implemented with configurations within a range that does not deviate from the contents described in the respective claims.

The principal part is expanded and shown with the partially notched front view which shows one form of the power transmission device for wind power generators which concerns on this invention. (2)-(2) sectional view taken on the line of FIG. Sectional drawing which shows the state which the control board protruded.

Explanation of symbols

A: Power transmission device for wind power generator B: Rotating body C: Wind power guide member F: Guide rail G: Generator H: Foundation F1: Outer fitting protrusion F2: Inner fitting protrusion 1: Spindle 2: Spiral blade 3: Normal wind 4: Back wind 31: Wind trapping wall 32: Wind trapping partition wall 3A: Concave portion 5: Wind vent plate 6: Guide plate 7: Control plate 8: Adjusting means 51: Wind vent plate main body 52: Fitting concave portion 61: Surface portion 62: Guide plate 81: Wind receiving plate 82: Pusher 83: Operation cable

Claims (3)

In the power transmission device for a wind power generator provided with a rotating body in which a spiral blade for rotating by wind power is disposed on the outer periphery of the main shaft fixed to the foundation with the axial direction being vertical,
The rotating body is a wind collecting surface provided with a convex portion or a concave portion that collects the wind acting on the wind receiving surface, while the surface subjected to the reverse wind escapes the wind acting on the surface. A wind power generator, characterized in that a windbreak plate that prevents the reverse wind from acting on the outer side of the rotating blade over the entire vertical direction of the spiral blade is supported concentrically with the rotating body. Transmission device.   2. The windshield plate is provided with a guide plate and a wind direction plate that move the windshield plate according to the direction of the wind to escape the reverse wind and at the same time maintain the airflow direction. The power transmission device for wind power generators described in 1.   The windshield plate has a wind receiving plate in a part of the wind shield plate so that the rotation can be controlled according to the wind force so that excessive rotation does not occur and damage to the rotating body or excessive electric power is generated. The control plate can be pushed forward of the windshield plate by a hydraulic device, electric power or the like according to the movement thereof, and the wind receiving surface can be reduced to control the rotational force. The power transmission device for wind power generators according to claim 1 or 2.

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