JP2010043529A - Windmill - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a windmill that is quick in start from a stop state and improved in turning efficiency. <P>SOLUTION: This windmill includes an eccentric part 3 positioned at a wind upstream side at an upper end of a column 2a. Arms 7, 9 are provided opposing each other at an upper part and a lower part, at rotation parts 6, 6 provided at an upper part and a lower part of the column. A blade member 13 is provided at a tip thereof. The blade member 13 includes a blade body 27 between an upper and a lower frame piece 25, 26, and the upper and the lower frame piece 25, 26 are connected to the blade body 27 at a rotary connection part. The eccentric part 3 and a front side connecting part 53 existing at a front side of the rotary connecting part are connected by a regulating rod 111, and the blade member 13 turns around the column. At the wind upstream side and the wind downstream side blade member, the frame pieces rotate through the regulating rod. The wind upstream side wind member has an asymmetric shape in which a chord shows an inclined state that a turning direction front part is farther from the column than a rear part, and a surface of the blade cross section near the column shows a convex surface. The wind downstream side wind member has an asymmetric shape in which a chord shows an inclined state that a front part is closer to the column than a rear part, and a surface of the blade cross section far from the column shows a convex surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a windmill, and more specifically, it is possible to optimize the pitch angle of a wing body turning around the axis of a mandrel and at the same time achieve optimization of the blade cross section, thereby improving the turning efficiency of the wing body. It concerns windmills.

  An example of a wind turbine that improves the turning efficiency of a wing body by optimizing the pitch angle of the wing body that turns is disclosed in Japanese Patent Laid-Open No. 2006-152922. In a state where the windmill is located on the windward side when viewed from the support column, the chord of the wing body is set to an inclined state in which the front part in the turning direction is farther from the support column than the rear part, and on the leeward side when viewed from the support unit. In the positioned state, the blade chord is set in an inclined state in which the front part in the turning direction is closer to the support column than the rear part, thereby improving the turning efficiency of the wing body.

  However, in such a windmill, when symmetrical blades are used as shown in FIGS. 1 to 6 of the publication, performance degradation at a low peripheral speed ratio has been a problem. By the way, in FIG. 7 of the same publication, a windmill having asymmetric blades is disclosed, but the windmill having such asymmetric blades is fixed in the same way no matter what point of turn the blade cross-sectional shape is, In both the state where the wing body is located on the leeward side and the state where it is located on the leeward side, it is impossible to efficiently generate rotational torque in the turning direction, and as a result, there is a limit to improving the turning efficiency of the wing. It was.

JP 2006-152922 A

  The present invention has been developed in view of the above-mentioned conventional problems, and by optimizing the pitch angle of the rotating wing body and at the same time achieving optimization of the blade cross-section, the start-up from a stationary state can be quickly performed. It is an object of the present invention to provide a wind turbine that can be performed at the same time and can improve the turning efficiency of the wing body.

  Another object of the present invention is to provide a wind turbine equipped with a safety device capable of decelerating or stopping the rotor by generating torque in the direction opposite to the turning direction against excessive wind speed. Is.

In order to solve the above problems, the present invention employs the following means.
That is, the wind turbine according to the present invention is provided with an eccentric portion that is deviated from the axis of the mandrel on one or both ends of the mandrel, and the mandrel via a rotating part that can rotate around the axis. An arm member having a pair of arms protruding in a facing state at a required interval is provided, and a wing member is provided at a tip portion of the pair of arms. The wing member is configured to be able to turn in one direction around the axis as the arm member rotates around the axis, and the wing member is arranged with the pair of arms facing each other. A wing body is disposed between the provided frame pieces, and the wing body is fixed to the pair of arms at both ends in the length direction of the blade core member extending in the opposing direction of the pair of arms. . Further, the opposing frame pieces are connected to each other by a front connecting piece on the front side of the blade core member as viewed in the turning direction, and the opposing frame pieces are connected on the rear side of the blade core member in the turning direction. The frame pieces are connected to each other by a rear connecting piece, and a cover piece wraps the front connecting piece and the blade core member and is attached to the rear connecting piece between the opposed frame pieces. The body is formed. Further, between the front connecting piece and the rear connecting piece, each of the opposed frame pieces is opposed to the integrated object of the tip portion of the arm and the blade core member, which It is connected by a rotation connecting portion so as to be rotatable around the same rotation axis extending in the opposite direction of the arm, and the front side connecting portion located on the front side of the rotation connecting portion and the eccentric portion are It is connected with a restriction rod, and each connecting portion is rotatable. And the said eccentric part is made to be located in a windward side by the wind direction control apparatus. Further, in a state where the wing member is located on the windward side when viewed from the mandrel, the frame piece is rotated via the regulating rod, so that the front connecting piece is moved away from the mandrel. And the chord of the wing body is inclined in such a manner that the front portion viewed in the turning direction is farther from the mandrel than the rear portion, and thus moved outwardly, The blade cross section of the wing body is formed such that the inner surface close to the mandrel is convex and the wing cross section is deformed so as to be asymmetric with respect to the chord, while the wing member is viewed from the mandrel. In the state positioned on the leeward side, the frame piece is rotated via the regulating rod, so that the front connecting piece is moved inward so as to approach the mandrel, and the wing of the wing body The front part of the string as viewed in the turning direction is more than the rear part. By being inclined near the center rod and moving inward in this way, the blade cross section of the wing body is formed with a convex surface on the outer side far from the mandrel, and the blade cross section It is characterized by being deformed so as to exhibit asymmetry with respect to the string.

  In another aspect of the wind turbine according to the present invention, an eccentric portion is provided on one end side or both end sides of the mandrel so as to deviate from the axis of the mandrel, and the mandrel has a rotating portion that can rotate around the axis. Accordingly, an arm member including a pair of arms protruding in a facing state with a required interval is provided, and a wing member is provided at a tip portion of the pair of arms. The wing member is configured to be able to turn in one direction around the axis as the arm member rotates around the axis, and the wing member is arranged with the pair of arms facing each other. A wing body is disposed between the provided frame pieces, and the wing body is fixed to the pair of arms at both ends in the length direction of the blade core member extending in the opposing direction of the pair of arms. . Further, the opposing frame pieces are connected to each other by a front connecting piece on the front side of the blade core member as viewed in the turning direction, and the opposing frame pieces are connected on the rear side of the blade core member in the turning direction. The frame pieces are connected to each other by a rear connecting piece, and a cover piece wraps the front connecting piece and the blade core member and is attached to the rear connecting piece between the opposed frame pieces. The body is formed. Further, between the front connecting piece and the rear connecting piece, each of the opposed frame pieces is opposed to the integrated object of the tip portion of the arm and the blade core member, which The rear connecting portion located on the rear side of the rotating connecting portion and the eccentric portion are connected by a rotating connecting portion so as to be rotatable around the same rotation axis extending in the opposing direction of the arm. Are connected by a regulating rod, and each connecting portion is rotatable. And the said eccentric part is made to be located in the leeward side by the wind direction control apparatus. Further, in a state where the wing member is located on the windward side when viewed from the mandrel, the frame piece is rotated via the regulating rod, so that the front connecting piece is moved away from the mandrel. And the chord of the wing body is inclined with the front portion viewed in the turning direction being farther from the mandrel than the rear portion, and thus moving outwardly, the wing The wing cross section of the body is deformed so that the inner surface close to the mandrel is convex and the wing cross section is asymmetric with respect to the chord, while the wing body is viewed from the mandrel. In the state located on the leeward side, the frame piece rotates via the regulating rod, so that the front connecting piece is moved inward so as to approach the mandrel, and the chord of the wing body However, the front part viewed in the turning direction is more than the rear part. By being inclined close to the rod and moving inward in this way, the blade cross section of the wing body is formed with a convex surface on the outer side far from the mandrel, and the blade cross section becomes a chord. It is characterized by being deformed so as to exhibit asymmetry.

  In each of the windmills described above, an urging means is incorporated in the restriction rod so that the restriction rod can be extended against the urging force of the urging means by the action of centrifugal force accompanying the turning of the wing member. It is good to configure.

  In such a configuration, the regulating rod is provided with a centrifugal force adjusting weight via an urging means, and the centrifugal force adjusting weight is urged by the action of the centrifugal force associated with the turning of the wing member. It is good to constitute so that it can move toward the regulation rod tip side along the axis of the regulation rod against the urging force.

  In each of the wind turbines, the wind direction control device includes forcible control means capable of forcibly revolving the eccentric portion around the axis of the mandrel and directing the eccentric portion to an arbitrary position. Is good.

The present invention has the following excellent effects.
(1) According to the present invention, it is possible to control the pitch angle of the blade body that makes one cycle per rotation of the rotor and the shape control of the blade cross section that makes one cycle per rotation of the rotor, A wind turbine capable of maximizing the positive torque region during forward turning and minimizing the negative torque region, enabling quick start-up from a stationary state, and efficient turning of the rotor It can be provided.
More specifically, according to the present invention, on the windward side when viewed from the mandrel, the chord of the wing body can be set in an inclined state in which the front part in the turning direction is farther from the mandrel than the rear part, and at the same time, By forming the blade cross section with a convex surface on the inner side close to the mandrel, the blade cross section can be asymmetric with respect to the chord. On the other hand, on the leeward side when viewed from the mandrel, the blade chord of the wing body can be set in an inclined state where the front part in the swirl direction is closer to the mandrel than the rear part, and at the same time, the blade cross section Can be made asymmetric with respect to the chord.
By these, in most regions near the leeward side and near the leeward side, it is possible to efficiently generate the rotational torque in the turning direction without causing a situation where the wing member is in a stalled state. Thus, it is possible to provide a wind turbine with improved wing turning efficiency.

(2) When the restricting rod is configured to be able to extend against the urging force of the incorporated urging means, when the wing body is excessively rotated due to fluctuations in wind speed, the restricting rod is subjected to centrifugal force. Can be elongated by the action of As a result, the wing member can be in a stalled state in most of the region during one rotation, and the rotor can be decelerated. When the wind speed returns to the normal state, the restriction rod returns to the original length, so that the rotor can automatically return to the normal turning state.

(3) When the wind direction control device is capable of forcibly revolving the eccentric portion around the axis of the mandrel and includes a forced control means capable of directing the eccentric portion to an arbitrary position, the wind speed is large. When the rotor rotates excessively, the blade member can be in a stalled state, and the rotor can be decelerated or stopped.

  In FIG. 1, a wind turbine 1 according to the present invention is provided with an eccentric portion 3 that is deviated from the axis L <b> 1 of the mandrel 2 on one end side or both end sides of the mandrel 2, and a wind direction control device 5 is provided on the eccentric portion 3. ing. The mandrel 2 is provided with an arm member 10 having a pair of arms 7 and 9 projecting in a facing state at a required interval via a rotating part 6 that can rotate around the axis L1. A wing member 13 is provided at the tip portions 11 and 12 of the pair of arms 7 and 9, and the wing member 13 can turn in one direction (forward direction) around the axis L <b> 1 of the mandrel 2. Hereinafter, this will be described in detail by taking a case where it is applied to a gyromill type wind turbine as an example.

  As shown in FIGS. 2 to 4, the mandrel 2 is configured as a vertical support 2a made of, for example, a hollow steel pipe, and the support 2a does not rotate around the axis in a normal operation state. A wind direction control shaft 16 constituting the wind direction control device 5 is accommodated in the insertion hole 15 of the support column 2a so as to be rotatable around the axis in the support column 2a, and as shown in FIG. A portion protrudes downward from the lower end 17 of the column 2a, and an operation shaft portion 19 is provided. The pedestal 2a has a pedestal piece 20 having, for example, a square plate shape fixed to a lower end portion thereof, and a support piece 22 placed on an installation surface 21 such as a pedestal on the lower surface side of the pedestal piece 20; 22, 22, and 22 project radially. In this embodiment, the length of the column 2a is set to about 1400 mm.

  The rotating portions 6 and 6 are provided as bearings 6a and 6a that can rotate around the axis of the support column 2a at an interval of about 1000 mm, for example, at an upper end portion and a lower end portion of the support column 2a. The base ends 23, 23, 23, 23 of the pair of upper and lower arms 7, 9, 7, 9 protruding in opposite directions are fixed to the upper and lower bearings 6 a, 6 a. Thereby, as shown in FIG. 1, the arm member 10 including a pair of upper and lower arms 7, 9, 7, 9 protruding in the left-right direction is provided, and the arm member 10 is provided around the axis L 1 of the column 2 a. It can rotate via the rotation parts 6 and 6 (bearings 6a and 6a). For example, the lower rotating portion 6A can be used for output. In the present embodiment, the upper and lower arms 7 and 9 are both formed in an elongated horizontal rectangular plate shape, and the protruding length is set to about 1000 mm.

  As shown in FIGS. 5 to 6 and FIGS. 7 to 8, the wing member 13 has a wing between upper and lower frame pieces 25 and 26 disposed between tip portions 11 and 12 of the upper and lower arms 7 and 9. The wing body 27 has upper and lower ends (upper and lower ends in the present embodiment) 30 and 31 extending in the opposing direction of the upper and lower arms 7 and 9. It is fixed to the tip portions 11 and 12 of the upper and lower arms 7 and 9. Then, as shown in FIG. 9, the upper and lower frame pieces 25 and 26 are rotated around the same rotation axis L2 extending to the blade core member 29 in the opposing direction (vertical direction) of the arms 7 and 9. It is connected with the rotation connection parts 70 and 76 so that rotation is possible.

  The upper and lower frame pieces 25 and 26 are made of a lightweight material, for example, aluminum in this embodiment, are formed relatively long in the turning direction, and the front side portions 32 and 33 viewed in the turning direction are: In order to reduce the air resistance when the wing member 13 is swiveled, it is formed in a tapered shape. As shown in FIGS. Has been. In addition, split grooves 40 and 41 that open at the rear ends 37 and 39 of the frame pieces and extend in the axial direction of the frame pieces are provided vertically in the rear portions of the upper and lower frame pieces 25 and 26 in the turning direction. At the same time, screw holes 42 and 43 are vertically provided in the upper and lower frame pieces 25 and 26 at the rear side portions of the upper and lower frame pieces 25 and 26 viewed in the turning direction.

  As shown in FIGS. 5 to 8, the upper and lower frame pieces 25 and 26 are connected to each other by a long rear connecting piece 45 extending in the vertical direction, for example, having a flat plate shape made of aluminum. Upper and lower end portions 46 and 47 of the piece 45 are fitted and fixed in the upper and lower split grooves 40 and 41. In addition, upper and lower end portions 50 and 51 of the front connecting piece 49 as, for example, a circular shaft 49a extending in the vertical direction are inserted into the upper and lower insertion holes 35 and 36 and fixed to the upper and lower frame pieces 25 and 26, respectively. ing. In this embodiment, the upper end portion of the front connecting piece 49 is protruded above the upper frame piece 25 to provide a front connecting portion 53 (FIG. 9) as a protruding pivot 52. .

  7-8, the blade core member 29 is formed long in the axial direction of the frame pieces 25, 26, and is close to the support column 2a when viewed in the extending direction of the arms 7, 9. The surface 55 is curved inwardly convexly, and the outer surface 56 far from the column 2a is formed into a cylindrical body having an elliptical cross section that is curved outwardly to the same extent.

  The blade core member 29 having such a configuration is disposed between the front connection piece 49 and the rear connection piece 45 so that the major axis thereof is aligned with the width direction of the tip portions 11 and 12 of the arms 7 and 9. ing. As described above, the upper end 30 of the blade core member 29 is fixed to the lower surface 57 of the tip portion 11 of the upper arm 7, while the lower end 59 of the blade core member 29 is fixed to the tip portion of the lower arm 9. 12 is fixed to the upper surface 60 of the twelve. In this embodiment, as shown in FIG. 9, the front and rear ends 61 and 62 of the blade core member 29 viewed in the turning direction are substantially matched with the front and rear edges 63 and 65 of the tip portions 11 and 12, respectively. .

  As shown in FIGS. 5, 9, and 7, upper and lower joint pieces 67, at the rear end portion (the rear end portion of the blade core member 29) of the upper surface 66 of the tip portion 11 of the upper arm 7, The lower joint piece 69 of the rotary connecting portion 70 as a rotary connecting joint tool that 69 can relatively rotate in a horizontal plane via the ball is fixed, and the screw cylinder portion 71 of the upper joint piece 67 is fixed. The upper frame piece 25 is fixed to the upper frame piece 25 by being screwed into the screw hole 42 of the upper frame piece 25. Further, at the rear end portion of the lower surface 72 of the front end portion 12 of the lower arm 9 (the rear end portion of the blade core member 29), the upper and lower joint pieces 73 and 75 can be relatively rotated in the horizontal plane via the balls. The upper joint piece 73 of the rotary connecting portion 76 as a rotary joint tool is fixed, and the screw cylinder portion 77 of the lower joint piece 75 is screwed into the screw hole 43 of the lower frame piece 26. And is fixed to the lower frame piece 26. Accordingly, the upper and lower frame pieces 25 and 26 can be rotated forward and backward around the same rotation axis L2 (FIG. 9) with the rotation connecting portions 70 and 76 as fulcrums.

  The wing body 27 is configured such that a cover piece 79 wraps the front connection piece 49 and the wing core member 29 and is attached to the rear connection piece 45. In this embodiment, urethane is applied to a woven fabric formed by weaving using, for example, polyester fiber yarn so as to surround the rear connecting piece 45, the blade core member 29, and the front connecting piece 49 in the circumferential direction. By attaching the cover piece 79 made of a fiber-reinforced resin sheet impregnated with resin in a stretched state, the wing body 27 has a streamlined shape in which the front portion 78a is formed in a round shape and the rear portion 78b is formed in a thin shape. Is configured. The rear portion 79a1 of the surrounding cover portion 79a attached in the surrounding state in this way may be brought into a contact state capable of slipping with respect to the rear end portion 84 of the rear connecting piece 45, but this embodiment Are fixed by bonding or the like. The front portion 79a2 of the surrounding cover portion 79a is in contact with the front connection piece 49 so that the blade cross section of the wing body 27 can be deformed as the frame pieces 25 and 26 rotate. Is in a state. In this embodiment, the vertical length of the wing body 27 is set to about 1000 mm, and the length of the chord 80 of the wing body 27 is set to about 160 mm.

  Further, as shown in FIGS. 2 and 10, an eccentric shaft 83 serving as the eccentric portion 3 protrudes upward from the upper end portion 81 of the column 2 a via a cap member 82. 1-2, L3 is the axis of the eccentric shaft 83. The cap member 82 has a flat cylindrical shape whose upper end is closed at the top surface portion 85 and whose lower end is opened. The cap member 82 is covered by the upper end portion 81 of the support column 2a, and has a built-in bearing 84. It can be freely rotated around the axis of the column 2a. An upper end 87 of the wind direction control shaft 16 is concentrically fixed to the lower surface 86 of the top surface portion 85 of the cap member 82. Then, on the upper surface 89 of the top surface portion 85 of the cap member 82, as shown in FIGS. 2 and 11, the axial line L1 of the column 2a (that is, the center of the top surface portion 85) and the eccentric amount L4 of 10 mm, The eccentric shaft 83 protrudes upward. A straight line (FIG. 11) L5 connecting the center 90 of the eccentric shaft 83 and the center 91 of the upper surface 89 of the cap member 82 substantially matches the extending direction of the arms 7, 9, 7, 9.

  The eccentric shaft 83 is provided with a disk-like mounting piece 93 that can rotate around the axis of the eccentric shaft 83 via a built-in bearing 92. As shown in FIGS. 2 and 10, an insertion hole 94 through which the eccentric shaft 83 is inserted is provided on the upper surface of the disk-shaped mounting piece 93, and horizontal protruding pieces 95, 95 protruding in the opposite direction are fixed with bolts. The drooping pieces 96, 96 are bent downward at the tips of the horizontal protruding pieces 95, 95. A bearing member 100 provided with a horizontal shaft hole 99 protrudes from the outer surface 97 of the drooping piece 96 and the shaft hole 99 is inserted into an insertion hole 101 provided at the central portion of the drooping piece 96. It is communicated.

  As shown in FIGS. 2 and 10, the hanging pieces 96, 96 have a base of a straight rod-shaped restriction rod main body (which constitutes a restriction rod 111 described later) 102 protruding in opposite directions and having the same length. An end portion 103 is attached. The base end side portion 103 is inserted into the shaft hole 99 and the insertion hole 101 so as to protrude toward the eccentric shaft 83 below the horizontal protruding piece 95, and the base end side portion An end portion 105 of 103 is accommodated in a shock absorber 106 fixed to the lower surface of the horizontal protruding piece 95. Further, the base end portion 103 is provided with a spring receiving flange 107 at the outer side of the shock absorber 106, and a coil spring (between the spring receiving flange 107 and the drooping piece 96 is provided. An urging means 109 as 109a (hereinafter also referred to as a base end side coil spring) is interposed in a compressed state.

  As shown in FIGS. 9 and 5 to 7, the protruding pivot 52 projecting from the front end side of the upper frame piece 25 is inserted into the distal end portion 110 of the restriction rod main body 102 and the protruding pivot is inserted. A bearing 108 is provided that can rotate about 52 axes. As shown in FIGS. 1 and 2, the distal end portion 110 of the restriction rod main body 102 is connected to the front side connecting portion 53 as the protruding pivot 52 through the bearing 108, so that the eccentric shaft 83 and the protruding portion are connected. The pivot 52 is connected to a regulating rod 111 including the regulating rod main body 102, the horizontal projecting piece 95, the disc-like mounting piece 93, and the proximal-side coil spring 109a.

  In this embodiment, as shown in FIGS. 1 and 12, a centrifugal force adjusting weight 113 that can be moved by sliding in the axial direction is provided at the proximal end portion 112 of the regulating rod main body 102. A spring receiving member 115 is fixed to the proximal end portion 112 of the restriction rod main body 102, and a coil spring (hereinafter also referred to as an intermediate coil spring) 116a is provided between the spring receiving member 115 and the centrifugal force adjusting weight 113. As a biasing means 116 is interposed.

  When the wing body 27 rotates excessively due to fluctuations in wind speed, the restriction rod 111 extends due to the action of centrifugal force with the coil spring 109a on the base end side being more compressed as shown in FIG. 13, for example. At this time, as shown in FIG. 14, for example, as shown in FIG. 14, the centrifugal force adjusting weight 113 moves toward the regulating rod tip side with the intermediate coil spring 116a in a compressed state, so that the mass of the wing body 27 is relatively small. Even so, a relatively large centrifugal force can be obtained, whereby the restriction rod 111 can be extended as required. The shock absorber 106 prevents the rotor 106 from being damaged when the regulating rod 111 expands and contracts in small increments following the small fluctuations in the wind speed.

  1 and 2, the wind direction control device 5 moves away from the eccentric shaft 83 on a straight line L5 (FIG. 11) connecting the center 90 of the eccentric shaft 83 and the center 91 of the cap member 82. A wind direction bar 117 extending in the direction and further protruding beyond the distal end portions 11 and 12 of the arms 7 and 9, a base end portion 119 of which is fixed to the eccentric shaft 83, A wind direction plate 120 having a vertical plate shape is provided. However, when the wind is blowing, the wind direction plate 120 is positioned on the leeward side when viewed from the support column 2a, so that the eccentric shaft 83 is positioned on the windward side when viewed from the support column 2a.

  The state on the windward side and the leeward side of the blade member 13 in a state where the eccentric shaft (eccentric part 3) 83 is positioned on the windward side in this way will be described with reference to FIG. The arrows shown in FIG. 15A indicate the wind direction, and the arrows shown in FIGS. 15B and 15C indicate the relative wind direction when the peripheral speed ratio is approximately 2, for example.

  When the wing member 13 is positioned on the windward side as shown on the left side of FIG. 15 (A), as shown in FIGS. The piece 49 is moved outward so as to move away from the column 2a. As a result, the chord 80 of the wing body 27 is in an inclined state (tangent to the swirl circle), as shown in FIG. 15B, in which the front part 121 viewed in the turning direction is farther from the support column 2a than the rear part 122. State inclined with respect to the direction). At the same time, since the blade core member 29 is fixed to the arms 7 and 9, the blade section of the blade body 27 has an inner side close to the support 2a as shown in FIG. The surface 118 is deformed so as to exhibit an asymmetry with a convex surface.

  On the other hand, when the eccentric shaft (eccentric portion 3) 83 is positioned on the windward side as described above, the wing member 13 is positioned on the leeward side as shown on the right side of FIG. As shown in FIGS. 15A and 15C, the restriction rod 111 is moved inward so that the front connecting piece 49 approaches the support column 2a. As a result, the chord 80 of the wing body 27 is in an inclined state (tangent to the swirl circle) in which the front part 121 viewed in the swivel direction is closer to the support column 2a than the rear part 122, as shown in FIG. State inclined with respect to the direction). At the same time, since the blade core member 29 is fixed to the arms 7 and 9, the blade section of the blade body 27 has an outer side far from the support 2a as shown in FIG. The surface 123 is deformed so as to exhibit an asymmetry with a convex surface.

  FIG. 16 shows a state in which the arm member 10 is rotated 90 degrees from the state in which the wing member 13 is on the windward side. In addition, the arrow shown to FIG. 16 (A) shows a wind direction, and the arrow shown to FIG. 16 (B) (C) has shown the relative wind direction. In this state, the wing bodies 27, 27 are in a state substantially along the relative wind direction, and the pitch angle is substantially zero.

  Thus, the pitch angle of the wing body 27 is one cycle per one rotation of the rotor 125 (the portion including the two wing members 13 and 13, the arm member 10, and the upper and lower rotating parts 6 and 6). Since the control of the angle between the chord 80 and the tangential direction of the swirl circle and the deformation control of the blade cross section for one cycle per rotation of the rotor 125 are performed, the vicinity of the leeward side and the leeward side In most areas, the positive torque (torque to rotate the rotor) during forward turning can be maximized without negatively affecting the rotor (braking the rotor) without causing the blade member to stall. Torque) region can be minimized. Therefore, when the wind turbine 1 having the above-described configuration is used, start-up from a stationary state is quickly performed, and the rotor 125 can efficiently turn in the forward direction.

  When the wing body 27 rotates excessively due to fluctuations in wind speed, as described above, the restriction rod 111 extends by the action of centrifugal force. Therefore, as shown in FIG. 17, the pitch angle is excessive when the wing body 27 is located on the leeward side, and the pitch angle is too small when the wing body 27 is located on the leeward side. The arrows shown in FIG. 17A indicate the wind direction, and the arrows shown in FIGS. 17B and 17C indicate the relative wind direction when the circumferential speed ratio is approximately 4, for example. FIG. 18 shows a state where the wing body 27 is located on the side substantially perpendicular to the wind direction. The arrows shown in FIG. 18A indicate the wind direction, and the arrows shown in FIGS. 18B and 18C indicate the relative wind direction. In this state, a pitch angle is generated, so that the wing body 27 is stalled in a right angle or an angular range around it. Accordingly, the negative torque for the forward turn increases, and the normal forward turn as described above cannot be obtained. As a result, the rotor 125 is decelerated. Note that when the wind speed returns to the normal state, the restriction rod 111 returns to the original length, so that the rotor 125 can automatically return to the normal turning state.

  When the wind speed is high and the rotor 125 rotates excessively, a forcible control means for directing the eccentric portion 3 toward the leeward side is operated. The forced control means includes means for forcibly rotating the wind direction bar 117 in a horizontal plane. However, by holding the wind direction bar 117 by hand and forcibly rotating it in a horizontal plane, or by forcibly rotating the operating shaft portion 19 of the wind direction control shaft 16 manually or by an operating device, the wind direction bar 117 is moved. When the eccentric shaft 83 is revolved by a required angle around the axis of the support column 2a by the forced rotation operation, the pitch angle and blade cross section of the blade body 27 can be changed according to the revolution angle, and the rotor 125 Can be stopped.

  Depending on the angle at which the wind direction bar 117 is rotated, it is possible to select as desired from relaxation deceleration to sudden deceleration. The case where the wind direction bar 117 is rotated 180 degrees to the windward side will be described as follows. That is, since the eccentric shaft 83 is positioned on the leeward side when rotated 180 degrees, as shown in FIG. 19A, the regulation shaft 83 is in the state where the wing member 13 is positioned on the leeward side. The rod 111 moves the front connecting piece 49 so as to approach the support column 2a. In FIG. 19A, the wind direction is indicated by an arrow. As a result, the chord 80 of the wing body 27 is in a tilted state (a state tilted with respect to the tangential direction of the swirl circle) in which the front part 121 viewed in the turning direction is closer to the support column 2a than the rear part 122. The At the same time, as shown in FIG. 19B, the blade section of the wing body 27 is deformed so that the outer surface 123 far from the support column 2a has an asymmetrical appearance.

  In the state where the wing member 13 is located on the leeward side, as shown in FIG. 19C, the front connecting piece 49 is moved outward by the restriction rod 111 so as to move away from the support column 2a. I'm damned. As a result, the chord 80 of the wing body 27 is in an inclined state (a state inclined with respect to the tangential direction of the turning circle) in which the front part 121 seen in the turning direction is farther from the support column 2a than the rear part 122. The At the same time, as shown in FIG. 19C, the blade cross section of the blade body 27 is deformed so that the inner surface 118 near the support column 2a exhibits an asymmetrical shape having a convex surface.

  Therefore, both the wing body on the windward side and the wing body on the leeward side are stalled, and the torque in the direction opposite to the turning direction is increased to decelerate or stop. Thus, the wind direction control device 5 is also a component of a safety device that stops the wind turbine 1 by stalling the wing body 27 against an excessive wind speed.

  FIGS. 20-21 are the things which changed the connection state of the said control rod 111 in the said Example.

  More specifically, FIG. 20 and FIG. 21 (A) show the rear connecting portion 108 as an upward projecting pivot provided on the rear side of the rotating connecting portion 70, for example, The eccentric part (eccentric shaft 83 in this embodiment) 3 is shown in a state of being connected by a restriction rod 111. In this case, as shown in the figure, the eccentric portion 3 is positioned on the leeward side by the control action of the wind direction control device 5. In FIG. 21A, the wind direction is indicated by an arrow.

  FIG. 21B shows a state in which the wing member 13 is located on the windward side, and the upper and lower frame pieces 25 and 26 are rotated via the restriction rod 111, whereby the front connecting piece 49 is The chord 80 of the wing body 27 is moved outward so as to move away from the mandrel (support 2a) 2, and the front portion 121 seen in the turning direction is inclined farther from the support 2a than the rear portion 122. It is said that. By moving outward in this way, the blade section of the wing body 27 is formed such that the inner surface 118 close to the support post 2a is convex and the blade section is asymmetric with respect to the chord 80. It is deformed as shown.

  FIG. 21C shows a state in which the wing member 13 is located on the leeward side, and the upper and lower frame pieces 25, 26 are rotated via the restriction rod 111, so that the front connection piece 49. Is moved inward so as to approach the support column 2a, and the chord 80 of the wing body 27 is inclined such that the front portion 121 viewed in the turning direction is closer to the support column 2a than the rear portion 122. . By moving inwardly in this way, the blade section of the wing body 27 is formed with a convex surface 123 on the outer side far from the support post 2a, and the blade section is asymmetric with respect to the chord 80. It is deformed as shown.

  FIG. 22 shows another embodiment of the wind turbine 1 according to the present invention, in which the mandrel 2 is arranged in a horizontal state. The mandrel 2 is formed with a hollow steel pipe in this embodiment, and is supported by bearings 127 and 127 provided at upper ends of left and right support portions 126 and 126 provided on a gantry (not shown). In the operation state of, it is supported without rotating around the axis. As shown in FIGS. 23 to 24, on the inner side of the bearings 127, 127 of the horizontal mandrel 2, eccentric fixing plates 129, 129 having a disk shape are the centers (eccentric part 3) 130. Is fixed to the center 128 of the mandrel 2 in a state of being decentered by, for example, about 10 mm, and the right and left eccentric fixing plates 129 and 129 are fixed to the mandrel 2 in a symmetrical manner.

  As shown in FIGS. 23 to 25, the eccentric fixing plates 129 and 129 are fitted on the inner peripheral surface 133 of the inner ring 132 of the bearings 130 and 130, respectively. The outer ring 135 of the bearing 132 is fixed to the inner surface of the fitting recess 137 of the mounting member 136, so that the mounting member 136 can rotate in an eccentric state with respect to the mandrel 2. As shown in FIGS. 22 to 25, mounting plates 139 and 139 projecting in the opposite directions are provided on the outer surface 138 of the mounting member 136, and the tips thereof are directed inward in the axial direction of the mandrel 2. The bent mounting pieces 140 and 140 are provided.

  As shown in FIG. 22, inside the support portions 126, 126, left and right rotating portions (in the present embodiment, bearings 6 b, 6 b) 6, 6 provided on the left and right sides of the mandrel 2, An arm member 10 is provided. The arm member 10 includes left and right arms 7, 9, 7, 9 projecting on both sides of the mandrel 2 in a state orthogonal to the axis of the mandrel 2, and the arm member 10 includes the rotating parts 6, 6 (bearing 6b, 6b) can be rotated around the axis of the mandrel 2. For example, one of the rotating parts can be used for output.

  The wing members 13 are provided at the tip portions 11 and 12 of the left and right arms 7 and 9, and the wing members 13 are rotated in one direction around the axis of the mandrel 2. It can turn in one direction (forward direction) around the axis.

  The structure of the wing member 13 is basically the same as that shown in the above embodiment, and the wing body 27 has a wing core extending in the opposing direction of the pair of left and right arms 7 and 9, as shown in FIG. Both end sides in the length direction of the member 29 (left and right ends in this embodiment) are fixed to the left and right arms 7 and 9. Then, each of the left and right frame pieces 25 and 26 is rotated so that the blade core member 29 can rotate about the same rotation axis extending in the opposing direction (left and right direction) of the arms 7 and 9. They are connected by dynamic connecting portions 144 and 144.

  In addition, on the rear side of the blade core member 29 when viewed in the turning direction, the opposing frame pieces 25 and 26 are connected to each other by a rear connection piece 45, and the frame pieces 25 and 26 are positioned on the front side thereof. 26. A front connection piece 49 is provided so as to connect each other, and the front connection parts 53, 53 as the left and right protruding pivots 52, 52 of the front connection piece 49 and the left and right eccentric parts 3, 3 are restricted. The rods 111 and 111 are connected. The restriction rod 111 has substantially the same configuration as that in the above-described embodiment, and its base end side portion 103 has a mounting piece 140 via a biasing means 109 as a coil spring 109a as shown in FIG. Further, a centrifugal force adjusting weight 113 is attached to the regulating rod 111 via a biasing means 116 as a coil spring 116a. A cover piece 79 (FIG. 22) is provided between the opposing left and right frame pieces 25 and 26 so as to surround the rear connecting piece 45, the blade core member 29, and the front connecting piece 49 in the circumferential direction. The wing body 27 is formed by being attached in a stretched state.

  In the present embodiment, the eccentric portions 3 and 3 are thus provided on both ends of the mandrel 2, and the front connecting portion (projecting pivot shaft 52) 53 and the eccentric portion 3 are connected to the regulating rod 111 on both ends of the blade core member 29. Therefore, the blade cross section of the wing body 27 can be more stably deformed. When the windmill 1 is small, the eccentric portion 3 may be provided only on one end side of the mandrel 2 and the regulating rod 111 may be provided only on the one end side.

  In this embodiment, the wind direction control device (not shown) including drive control means such as a geared motor that operates in response to the detection signal of the wind direction sensor controls the wind direction so that the eccentric portion 3 exists on the windward side. Done. In FIG. 22, the wind direction F is indicated by an arrow.

  Even with the wind turbine 1 having such a configuration, the pitch angle of the blade body 27 is controlled by one cycle per rotation of the rotor and the blade cross section is rotated by one cycle per rotation of the rotor 125 by the same operation as in the above embodiment. Since deformation control is performed, the positive torque region during forward turning can be maximized, and the negative torque region can be minimized. Therefore, when the wind turbine 1 having the above-described configuration is used, it is possible to quickly start from the stationary state and to efficiently turn the rotor 125 in the forward direction.

  When the wing body 27 rotates excessively due to fluctuations in wind speed, the restriction rod 111 extends due to the action of centrifugal force. As a result, the wing member 13 is positioned on the windward side by the same action as described above. However, even in the state of being located on the leeward side, the stalled state occurs in many areas, the torque in the direction opposite to the turning direction increases, and the normal forward turning as described above cannot be obtained. 125 will be decelerated. Note that when the wind speed returns to the normal state, the restriction rod 111 returns to the original length, so that the rotor 125 can automatically return to the normal turning state.

  Further, when the wind speed is high and the rotor 125 is excessively rotated, the eccentric portion 3 can be directed to an arbitrary position such as the leeward side by forced control means such as a geared motor that operates in response to a detection signal of the wind speed sensor. it can. By setting this position, the wind force received by the wing body 27 can be changed, and the rotor 125 can be decelerated or stopped.

  In the wind turbine 1 according to this embodiment, when the horizontal mandrel 2 is supported by the bearings 127 and 127 so as to be able to adjust the rotation around its axis, the wind turbine 1 is installed on an inclined ground. , So that the straight line connecting the eccentric portion 3 and the center of the mandrel 2 is parallel to the inclined surface of the inclined land, that is, the eccentric portion 3 is located on the windward side in the inclination direction of the inclined surface Thus, by rotating and adjusting the mandrel 2 and fixing its state, it is possible to improve the turning efficiency of the wing body 27 by effectively utilizing the wind rising up the inclined surface. Further, when configured in this manner, when the windmill is installed on the ocean, it is possible to absorb the swing of the installation surface by adjusting the rotation of the mandrel 2 and to improve the turning efficiency of the wing body 27. .

  The present invention is by no means limited to those shown in the above-described embodiments, and it goes without saying that various design changes can be made within the scope of the claims. One example is as follows.

(1) In each of the embodiments described above, the rear side portions of the opposing frame pieces 25 and 26 are opposed to the tip portions 11 and 12 of the arms 7 and 9, respectively, and the pair of arms 7 and 9 are opposed to each other. Although it is connected by a rotation connecting part so as to be rotatable around the same rotation axis extending in the direction, a required part between the front connecting piece 49 and the rear connecting piece 45, for example, a central part or What is necessary is just to connect with the rotation connection part 70 in a front side part.

(2) FIG. 26 shows a configuration in which the eccentric portion 3 is also provided at the lower end side portion of the support 2a of the wind turbine 1 according to the first embodiment. The front side connecting portion 53 of the wing member 13 and the eccentric portion 3 is connected by a restriction rod 111. Since the configuration and operation of the eccentric portion 3 are the same as those in the second embodiment, detailed description thereof is omitted.

(3) FIG. 27 shows another configuration of the eccentric portion 3, and the eccentric portion 3 is constituted by the vertical column portion 143 of the crank portion 142 provided on the mandrel 2 as the column 2 a. The horizontal mandrel 2 can be similarly configured.

(4) FIGS. 28 (A) and 28 (B) show a cover piece portion that constitutes between the blade core member 29 and the front connection piece 49 in the front portion of the wing body 27 viewed in the turning direction. 145 shows an embodiment in which the inner cover portion 146 on the mandrel 2 side is configured to be thick. In this embodiment, a sheet-like mass increasing piece 147 made of the same material as the cover piece 79 and extending in the vertical direction of the wing body 27 is fixed by fusion or the like, so that the inner cover portion 146 is thickened. It is configured.
When the mass of the inner cover part 146 is increased in this way, the outer cover part 149 facing the inner cover part 146 is excessively extended outward due to the action of centrifugal force accompanying the turning of the wing member 13. For example, as shown in FIG. 28C, the inner cover portion 146 having an increased mass is recessed outwardly and deformed. Therefore, the outer cover part 146 slips on the peripheral surface 50 of the front connecting piece 49 and is pulled inward, and as a result, the tension of the outer cover part 149 is increased and the bulging deformation is suppressed. Will be. Therefore, there is an advantage that the wing member 13 can be swiveled while maintaining the blade section of the wing body 27 in a more optimal state.

(5) In the present invention, the wing body 27 may be configured by a cover piece 79 wrapping the front connection piece 49 and the wing core member 29 and attached to the rear connection piece 45. For example, as shown in FIG. 29, both end portions 150 and 150 of a cover piece 79 provided so as to wrap the front connecting piece 49 and the blade core member 29 are bonded to both side portions 151 and 151 of the rear connecting piece 45. It may also be configured by mounting.

(6) It is essential that the cover piece 79 has flexibility so that the blade section of the wing body 27 can be deformed by the rotation of the frame pieces 25 and 26, but the wing body 27 is a rigid body. Since the blade core member 29 is provided, the cover piece 79 can be made of a material having a small mass, whereby the weight of the wing body 27 can be reduced, and the rotation of the wing body 27 can be achieved. Contributes to improved efficiency. For example it can be employed those ^{0.4kg / m 2 ~1.5kg / m 2} , in the embodiment is used as the 0.4 kg / m ^2.

(7) In the wind turbine 1 according to the present invention, the wing member 13 may be one, or a plurality of three or four. And the front side connection part 53 which comprises each wing | blade member 13, and the eccentric part 3 provided in the said mandrel 2 are connected by the control rod 111. FIG.

(8) In this case, the pivotable connection of the base end side portion 103 of the restriction rod 111 to the eccentric portion 3 may be performed individually. FIG. 30 shows the case where the mandrel 2 is a support column 2a, and the base end of the eccentric shaft (eccentric portion 3) 83 provided in the same manner as in the first embodiment via a rotating means such as a bearing. The case where the side part 103 is connected independently is shown. Such a configuration can also be applied when the mandrel 2 is disposed in a horizontal state.

(9) FIG. 31 shows that the upper end 30 of the blade core member 29 is positioned above the distal end portion 11 of the upper arm 7 and the lower end 31 thereof is lower than the distal end portion 12 of the lower arm 9. The tip portions 11 and 12 of the upper and lower arms 7 and 9 are fixed to the side surface portion 152 of the blade core member 29. In the case of such a configuration, the cover piece 79 is attached while avoiding the upper and lower tip portions 11 and 12. When configured in this way, there is an advantage that the vertical length of the wing body 27 can be formed as long as possible regardless of the distance between the upper and lower arms 7 and 9. Such a configuration can be similarly adopted when the mandrel 2 is arranged in a horizontal state.

(10) The rear connection piece 45 may be anything as long as it can connect the opposing frame pieces 25 and 26 to each other on the rear side of the blade core member 29, and may have an axial shape. Good. The front connecting piece 49 may be anything as long as it can connect the opposing frame pieces 25 and 26 on the front side of the blade core member 29, and the front end portion is rounded. If present, the cross section may have an elliptical shape or a plate shape.

(11) The cross-sectional shape of the blade core member 29 may be a cross-sectional circular shape, a rounded rectangular shape, or the like in addition to the elliptical shape described above. Further, the blade core member 29 may be configured by combining a plurality of rod-shaped members such as a tubular body in addition to the rod-shaped member such as an integral tubular body as described above.

(12) In the case of the first embodiment, the strut 2a is not allowed to rotate around its axis even in the windmill operating state.

(13) The rotation connecting portions 70, 76, 144 are formed by combining the opposing frame pieces 25, 26 into an integrated body of the distal end portion 11 of the arm and the blade core member 29 facing each other. Any member that can be connected so as to be rotatable around the same rotation axis extending in the opposing direction of the arm may be used, and may be connected to the blade core member 29. And this rotation coupling tool can also be comprised with the shaft body etc. which were supported with the bearing and the bush other than the above-mentioned rotation joint tool.

(14) When the support column that is the mandrel 2 is configured to be rotatable about its axis, when the eccentric part 3 is provided integrally with the mandrel 2, the eccentric part 3 is positioned on the windward side by the wind direction control device 5. When this is done, the wind direction can be controlled by rotating the mandrel 2 about its axis.

(15) When the rotor rotates excessively, the restriction spring 111 is extended by elastically compressing a coil spring (a kind of biasing means such as a spring member) by the action of centrifugal force, thereby slowing down the rotation of the rotor. In doing so, it is preferable to attach the centrifugal force adjusting weight 113 as described above, for example. However, when the mass of the wing member 13 is relatively large, the centrifugal force adjusting weight 113 may be omitted.

(16) FIG. 32 shows another embodiment of the arm member 10. In the case where the mandrel 2 is, for example, a column 2a, the rotating part 6 is extrapolated to the mandrel 2 and the upper and lower bearings 153, 153 shows a case where it is configured as a rotating cylindrical body 155 that can rotate around the axis of the mandrel 2 via 153, and is formed long vertically. Then, the base members 23 and 23 of the pair of upper and lower arms 7 and 9 are fixed so as to be positioned above and below the rotary cylinder 155, thereby forming the arm member 10 composed of the pair of upper and lower arms 7 and 9. Yes. Such a configuration can also be applied when the mandrel 2 is disposed in a horizontal state.

(17) As shown in FIG. 33, the arm member 10 connects the rotating parts 6 and 6 provided at a required interval to the mandrel 2 with a connecting member 148 and a pair of arms 7 at both ends of the connecting member. , 9 can be configured to project in an opposing state.
Further, only one rotating part 6 that can rotate around the axis may be provided on the mandrel 2. In this case, the arm member 10 can be configured by providing a connecting portion on the rotating portion 6 along the mandrel 2 and projecting a pair of arms 7 and 9 at opposite ends of the connecting portion. Alternatively, it may be configured by projecting the arms 7 and 9 in an inclined state in the opposite direction from the rotating part.

(18) When the restriction rod 111 can be elastically extended via the biasing means 109 such as a spring member, when the spring member is employed, this is not specified for the coil spring described above, A fluid spring, a rubber spring, a disc spring, or the like may be used as long as it can be elastically compressed or elastically expanded by the action of centrifugal force. Further, the portion for incorporating the urging means 109 into the restriction rod 111 is not limited as long as it can prevent excessive rotation of the rotor by the extension of the restriction rod 111 due to the action of centrifugal force.

(19) The restriction rod 111 may not be configured in a straight line as long as it acts to change the pitch angle and blade section of the blade body.

(20) When the windmill according to the present invention is applied to a gyromill type windmill as shown in the first embodiment, the wind direction control device can employ means that is manually operated using the wind direction bar 117 described above, You may employ | adopt the means to control automatically, without using this wind direction bar. For example, it can be configured using a drive control means such as a geared motor that operates in response to a detection signal from a wind direction sensor.

It is a perspective view which shows the windmill which concerns on this invention. It is sectional drawing explaining the structure of the upper rotation part and eccentric part which were provided in the upper end side part of the support | pillar at the time of applying to a gyromill type windmill. It is sectional drawing explaining the structure of the rotation part provided in the lower part of the support | pillar. It is sectional drawing explaining the structure of the lower end part of the support | pillar. It is a partially cutaway perspective view showing the configuration of one wing member of the windmill. It is a partially cutaway perspective view explaining the structure of the other wing member of a windmill. It is a disassembled perspective view explaining the structure of one wing member. It is a disassembled perspective view explaining the structure of the other wing | blade member. It is a front view of middle omission explaining the composition of a wing member. It is a perspective view explaining the structure of an eccentric part. It is explanatory drawing which shows the deflection state of an eccentric part. It is a front view explaining the mounting state of the centrifugal force adjustment weight with respect to a control rod. It is a front view which shows the state which attached the proximal end part of the control rod to the eccentric part. It is a top view which shows the state which the centrifugal force adjustment weight moved toward the control rod tip side. It is a top view which shows the wing | blade member located in the windward side and leeward side in the state in which the eccentric part was located in the windward side, and sectional drawing which shows the blade cross section of the wing | blade body in the windward side and leeward side. FIG. 4 is a plan view showing a state where the arm member is rotated 90 degrees from a state where the wing member is on the windward side, and a cross-sectional view showing a wing cross section of each wing body. FIG. 4 is a plan view showing a state where the regulating rod is extended by the action of centrifugal force in a state where the eccentric portion is positioned on the windward side, and a cross-sectional view showing a blade cross section of the wing body on the windward side and the leeward side. It is a top view which shows the state which the arm member rotated 90 degree | times, and sectional drawing which shows the blade cross section of each blade body. It is a top view which shows the state which operated the forced control means, and sectional drawing which shows the blade | wing cross section of the wing | blade body in a windward side and a leeward side. It is a fragmentary perspective view which shows the windmill formed by connecting the back side connection part and the eccentric part which were provided in the back side of the rotation connection part with the control rod. It is the top view and sectional drawing which shows the blade cross section of the wing | blade body in a windward side and a leeward side. It is a perspective view which shows the windmill by which a mandrel is arrange | positioned in a horizontal state. It is sectional drawing which shows the structure of the eccentric part of the windmill. It is the side view. FIG. In a gyromill type windmill, while providing an eccentric part also in the lower end side part of a support | pillar, they are the partial perspective view and bottom view which show the state which connected the front side connection part and this eccentric part of the wing | blade member with the control rod. It is a partial cross section side view which shows the state which comprised the eccentric part with the crank part provided in the mandrel. It is a perspective view explaining other composition of a wing body, and a sectional view explaining the operation. It is sectional drawing which shows the other aspect of a wing | blade body. It is a perspective view which shows the connection state with respect to the eccentric part of two control rods in the case of two wing members. It is a perspective view explaining the other aspect which attaches the front-end | tip part of an arm to a blade core member. It is a partial cross section front view explaining the other structure of the rotation part provided in the mandrel. It is a front view explaining the other structure of an arm member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Windmill 2 Mandrel 3 Eccentric part 5 Wind direction control apparatus 6 Rotating part 7 Arm 9 Arm 10 Arm member 11 Arm tip part 12 Arm tip part 13 Wing member 16 Wind direction control shaft 19 Operation shaft part 25 Upper frame piece 26 Below Frame piece 27 Wing body 29 Blade core member 45 Rear connection piece 49 Front connection piece 53 Front connection part 55 Inner surface 56 Outer surface 70 Rotation connection part 76 Rotation connection part 80 Blade chord 83 Eccentric shaft 102 Regulating rod main body 116 With Force means 117 Wind direction bar 120 Wind direction plate 125 Rotor 129 Eccentric fixing plate 144 Rotating connecting portion

Claims (5)

An eccentric part is provided on one or both ends of the mandrel so as to be offset from the axis of the mandrel, and the mandrel is opposed to the mandrel via a rotating part that can rotate around the axis. An arm member having a pair of protruding arms is provided, and a wing member is provided at a tip portion of the pair of arms,
The wing member is configured to be able to turn in one direction around the axis as the arm member rotates around the axis.
Further, the wing member includes a wing body disposed between frame pieces disposed so as to face each other between the pair of arms, and the wing body extends in a facing direction of the pair of arms. Both end sides in the length direction of the core member are fixed to the pair of arms,
Further, the opposing frame pieces are connected to each other by a front connecting piece on the front side of the blade core member as viewed in the turning direction, and the opposing frame pieces are connected on the rear side of the blade core member in the turning direction. The frame pieces are connected to each other by a rear connecting piece, and a cover piece wraps the front connecting piece and the blade core member and is attached to the rear connecting piece between the opposed frame pieces. The body is formed,
Further, between the front connecting piece and the rear connecting piece, each of the opposed frame pieces is opposed to the integrated object of the tip portion of the arm and the blade core member, which It is connected by a rotation connecting part so that it can be rotated around the same rotation axis extending in the opposite direction of the arm,
Further, the front side connecting portion located on the front side of the rotating connecting portion and the eccentric portion are connected by a regulating rod, and each connecting portion is rotatable.
Further, the eccentric portion is positioned on the windward side by the wind direction control device,
Further, in a state where the wing member is located on the windward side when viewed from the mandrel, the frame piece is rotated via the regulating rod, so that the front connecting piece is moved away from the mandrel. And the chord of the wing body is inclined in such a manner that the front portion viewed in the turning direction is farther from the mandrel than the rear portion, and thus moved outwardly, The blade cross section of the wing body is formed such that the inner surface close to the mandrel is convex and the wing cross section is deformed so as to be asymmetric with respect to the chord, while the wing member is viewed from the mandrel. In the state positioned on the leeward side, the frame piece is rotated via the regulating rod, so that the front connecting piece is moved inward so as to approach the mandrel, and the wing of the wing body The front part of the string as viewed in the turning direction is more than the rear part. By being inclined near the center rod and moving inward in this way, the blade cross section of the wing body is formed with a convex surface on the outer side far from the mandrel, and the blade cross section A windmill characterized by being deformed to exhibit asymmetry with respect to a string. An eccentric part is provided on one or both ends of the mandrel so as to be offset from the axis of the mandrel, and the mandrel is opposed to the mandrel via a rotating part that can rotate around the axis. An arm member having a pair of protruding arms is provided, and a wing member is provided at a tip portion of the pair of arms,
The wing member is configured to be able to turn in one direction around the axis as the arm member rotates around the axis.
Further, the wing member includes a wing body disposed between frame pieces disposed so as to face each other between the pair of arms, and the wing body extends in a facing direction of the pair of arms. Both end sides in the length direction of the core member are fixed to the pair of arms,
Further, the opposing frame pieces are connected to each other by a front connecting piece on the front side of the blade core member as viewed in the turning direction, and the opposing frame pieces are connected on the rear side of the blade core member in the turning direction. The frame pieces are connected to each other by a rear connecting piece, and a cover piece wraps the front connecting piece and the blade core member and is attached to the rear connecting piece between the opposed frame pieces. The body is formed,
Further, between the front connecting piece and the rear connecting piece, each of the opposed frame pieces is opposed to the integrated object of the tip portion of the arm and the blade core member, which It is connected by a rotation connecting part so that it can be rotated around the same rotation axis extending in the opposite direction of the arm,
Further, the rear side connecting portion located on the rear side of the rotating connecting portion and the eccentric portion are connected by a regulating rod, and each connecting portion is rotatable.
In addition, the eccentric portion is positioned on the leeward side by the wind direction control device,
Further, in a state where the wing member is located on the windward side when viewed from the mandrel, the frame piece is rotated via the regulating rod, so that the front connecting piece is moved away from the mandrel. And the chord of the wing body is inclined with the front portion viewed in the turning direction being farther from the mandrel than the rear portion, and thus moving outwardly, the wing The wing cross section of the body is deformed so that the inner surface close to the mandrel is convex and the wing cross section is asymmetric with respect to the chord, while the wing body is viewed from the mandrel. In the state located on the leeward side, the frame piece rotates via the regulating rod, so that the front connecting piece is moved inward so as to approach the mandrel, and the chord of the wing body However, the front part viewed in the turning direction is more than the rear part. By being inclined close to the rod and moving inward in this way, the blade cross section of the wing body is formed with a convex surface on the outer side far from the mandrel, and the blade cross section becomes a chord. A windmill characterized by being deformed so as to exhibit asymmetry.   An urging means is incorporated in the restriction rod, and the restriction rod can be extended against the urging force of the urging means by the action of a centrifugal force caused by the wing member turning. Item 1. A windmill according to item 1 or 2.   The regulating rod is provided with a centrifugal force adjusting weight via an urging means, and the centrifugal force adjusting weight is applied to the urging force of the urging means by the action of the centrifugal force accompanying the turning of the wing member. 4. The wind turbine according to claim 3, wherein the wind turbine can move toward the front side of the restriction rod along the axis of the restriction rod.   The said wind direction control apparatus is provided with the forced control means which can revolve the said eccentric part around the axis line of the said mandrel, and can orient | assign this eccentric part to arbitrary positions, It is characterized by the above-mentioned. 2. The windmill described in 2.

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