Windantrieb

Abstract

wind propulsion (1) having: - a shaft (2) which is rotatably mounted about its longitudinal axis (2a), - at least two longitudinal beams (4) or at least two groups of longitudinal beams (4) attached and spaced apart on the shaft, which are arranged at equal angular intervals to each other around the circumferential direction of the longitudinal axis (2a) of the shaft and form a corresponding number of fastening blocks (6) in the planes passing through the longitudinal axis (2a) of the shaft, and - at least one pair of main wings (8) mounted on each of the mounting blocks (6), which are mounted such that each main wing (8) is rotatably mounted about one of its edge regions, the axis of rotation (8a) of which is arranged in a plane of the corresponding mounting block (6), wherein the axes of rotation (8a) of the edge regions of the main wings (8) of a pair are arranged parallel to each other, characterized in that the main wings (8) of each pair of main wings (8) are mechanically connected to each other in such a way that both main wings (8) can be rotated simultaneously in opposite directions and form in their end positions: - in the first end position at an angle of 3 to 30 degrees to a plane that is perpendicular to the plane of the corresponding mounting block (6) and passes through the axis of rotation (8a) of the corresponding main wing (8), wherein the first end position is the closed position of the main wing (8), and - in the second end position an angle of 70 to 110 degrees to the same plane, the second end position being the open position of the main wing (8).

Description

WIND DRIVE

[0001] The utility model relates to the energy sector and can be used to convert wind energy into other forms of energy, especially electrical energy. TECHNICAL AREA

[0002] Wind energy is an environmentally friendly energy source. Wind turbines have long been used to convert wind energy into other forms of energy, such as electricity. However, most existing turbines of this type are characterized by high costs, low efficiency, and increased noise levels. Therefore, there is a need in this field for wind turbines that are less expensive, quieter, and more efficient, and that can also operate at low wind speeds.

[0003] In this field of technology, a device for converting the energy of a moving liquid or gas is known, as described in Russian Federation patent RU 2128296 C1. The device comprises a drive shaft and energy-absorbing vanes, the vanes being mounted in pairs and individually on cantilever beams at the level of the drive shaft, symmetrically to its axis of rotation, so as to be freely rotatable. The cantilever beams are mounted perpendicular to the axis of the drive shaft at intervals of at least the height of the vanes, with the planes of two pairs of vanes adjacent at the level of the drive shaft forming a non-zero angle. Each vane is provided with a support that holds it only in one half of the flow area, which is divided by a plane passing through the axis of the drive shaft and whose direction coincides with the flow velocity vector.For the upper pair of wings, two additional outrigger beams are arranged above their suspension line at a distance that does not exceed the height of the wings, and are attached perpendicular to the axis of the drive shaft.

[0004] This design of the device ensures reliable operation even under strong turbulence in the working flow of liquid or gas.

[0005] One disadvantage of the described device is its low energy efficiency at low wind speeds. Therefore, the development of a reliable and efficient wind drive remains a highly relevant topic. BRIEF DESCRIPTION OF THE USE PATTERN

[0006] The technical result of the proposed utility model is an increase in the efficiency of wind energy generation and the reliability of operation.

[0007] The proposed wind propulsion system features: - a shaft which is mounted to rotate about its longitudinal axis, - at least two longitudinal beams attached to and spaced apart from the shaft, or at least two groups of longitudinal beams arranged at equal angular intervals from each other around the circumferential direction of the longitudinal axis of the shaft, forming a corresponding number of fastening blocks in the planes passing through the shaft axis, and - at least one pair of main wings arranged on each of the mounting blocks, the main wings being arranged such that each main wing is rotatable about one of its edge regions, its axis of rotation being arranged in the plane of the corresponding mounting block, the axes of rotation of the edge regions of the main wings of a pair being arranged parallel to each other.

[0008] The proposed wind propulsion system is characterized by the fact that the main blades of each pair are mechanically connected to each other in such a way that both main blades can be rotated simultaneously in opposite directions, forming the following positions in their end positions: - in a first end position at an angle of 3 to 30 degrees to a plane that is perpendicular to the plane of the corresponding mounting block and passes through the axis of rotation of the corresponding main wing, wherein the first end position is a closed position of the main wing, and - in a second end position an angle of 70 to 110 degrees to the same plane, the second end position being an open position of the main wing.

[0009] The axes of rotation of the edge regions can be arranged perpendicular or parallel to the longitudinal axis of the shaft.

[0010] The mechanical connection between the main wings of a fastening block can be in the form of a gear drive, a lever drive, or a flexible connecting element.

[0011] In one embodiment of the wind drive, the mounting block is formed by a group of longitudinal beams and comprises at least two longitudinal beams that are attached to the shaft and perpendicular to it, as well as a beam arranged parallel to the axis of rotation of the shaft. The beam connects the ends of the longitudinal beams of this group that are spaced apart from the shaft.

[0012] In one embodiment of the proposed wind drive, each of the mounting blocks also has at least one additional wing. The additional wing is rotatably mounted about one of its edge regions, its axis of rotation being parallel to the axes of rotation of the edge regions of the main wings of the corresponding mounting block. Furthermore, the additional wing is mechanically connected to at least one of the main wings of the same corresponding mounting block. This additional wing is designed such that it can be rotated by the same angle and in the same direction as one of the main wings to which it is mechanically connected, namely: - in a first end position at an angle of 3 to 30 degrees to a plane that is perpendicular to the plane of the corresponding mounting block and passes through the axis of rotation of the corresponding additional wing, wherein the first end position is a closed position of the additional wing, and - in a second end position at an angle of 70 to 110 degrees to the same plane, the second end position being an open position of the additional wing.

[0013] The mechanical connection between the main wing and the auxiliary wing of a mounting block can be in the form of a gear drive, a lever drive or a flexible connecting element.

[0014] In both the mechanical connection between the main wings and the mechanical connection between the main and auxiliary wings, the flexible connecting element can be a rope or a cord.

[0015] In embodiments of the wind drive with main blades and an additional blade, at least one additional blade is designed in one or more pairs of main blades such that the space between the main blades of the same mounting block in their open position can be covered by the additional blade in the open position.

[0016] Furthermore, in one embodiment of the wind drive, the mounting block additionally features retaining elements for fixing the main and / or auxiliary blades in their closed and open positions. In one embodiment, the retaining elements are arranged on the longitudinal beams that form the corresponding mounting block.

[0017] According to the proposed utility model, the main wings and at least one additional wing are made of a material from the group comprising woven or non-woven fabric, sheet metal, plastic, structured fiberglass or combinations thereof.

[0018] In some embodiments of the utility model, in the first end position, i.e., in the closed position, the angle between the main wings is 6 to 60 degrees, preferably 6 to 20 degrees, and in the second end position, i.e., in the open position, the angle between the main wings is 140 to 220 degrees, preferably 170 to 190 degrees, particularly preferably 180 degrees.

[0019] Furthermore, in some embodiments, each of the two main wings is designed so that it can be rotated simultaneously with the other main wing associated with it in opposite directions by an angle of 40 to 113 degrees, preferably 80 to 100 degrees, particularly preferably 90 degrees.

[0020] The main wings of the same mounting block have the same mass and area. Furthermore, the main wings are arranged symmetrically to the longitudinal axis of the longitudinal beam within the mounting block. With this arrangement, the opening position of the interconnected main wings of a mounting block is determined solely by the direction of the wind flow, and not by the force of gravity acting on each of the main wings, which is compensated by their interconnection.

[0021] Furthermore, the wind flow acts uniformly on the upper and lower main wings of a mounting block, resulting in a synchronous rotation of both wings due to their mechanical connection. In this case, the force of the wind flow is used solely for rotating the wind drive, unlike the prior art mentioned above (RU 2128296 C1), where the force of the wind flow was partially compensated by the force of gravity on the wings. This efficient conversion of wind energy into rotational energy enables the operation of the proposed wind drive even at low wind speeds. BRIEF DESCRIPTION OF THE FIGURES

[0022] The features of the proposed wind propulsion system are shown in the attached figures, which include: Fig. Figure 1 shows an embodiment of the wind drive (front view) when using only the main wing, wherein the angular distance between adjacent mounting blocks is 180 degrees. Fig. 2 a top view of the in Fig. Figure 1 shows the embodiment of the wind drive. Fig. Figure 3 shows an embodiment of the wind drive (top view) when using only the main blades, wherein the angular distance between adjacent mounting blocks is 90 degrees. Fig. Figure 4 shows the operation of the main wings of a fastening block in the open position of the wings (side view). Fig. Figure 5 shows the operation of the main wings of a fastening block in the closed position of the wings (side view). Fig. Figure 6 shows an embodiment of the wind drive (front view) using main wings and an additional wing, wherein the angular distance between adjacent mounting blocks is 180 degrees. Fig. Figure 7 shows the operation of the main wings and the additional wing of a mounting block in the open position of the wings (side view). Fig. Figure 8 shows the operation of the main wings and the additional wing of a mounting block in the closed position of the wings (side view). DETAILED DESCRIPTION OF USE

[0023] Further objectives, features, and advantages of the present utility model will become apparent from the following detailed description of the utility model with reference to the accompanying figures, as indicated above. As will be understandable to a person skilled in the art, the present utility model has various modifications and alternative forms. However, the distinctive features shown in the figures as examples are described in detail. It should be noted that the specific embodiments of the present utility model described below do not constitute a limitation of the possible embodiments of the utility model, but merely serve to improve the understanding of a person skilled in the art.

[0024] The Fig. 1 and Fig. Figure 6 shows a general view of the wind drive. The wind drive 1 has a shaft 2 which is rotatably mounted about the longitudinal axis 2a of the shaft, and at least two longitudinal beams 4 spaced apart from the shaft 2, as shown in Fig. 1 shown, or at least two groups of longitudinal beams 4, as in Fig. Figure 6 shows that each of the longitudinal beams 4 is attached to the shaft 2 at one of its ends. The longitudinal beams 4, as shown in Fig. 1, or the groups of longitudinal beams 4, as in Fig. 6 are arranged at equal angular intervals to each other on the circumference around the longitudinal axis 2a of the shaft. Fig. Figure 1 shows an embodiment of the wind drive with two longitudinal beams 4. In this case, the angle between the longitudinal beams 4 is 180 degrees (see also Fig. 2) Similarly, in the embodiment in Fig. 6. The angle between the longitudinal beam groups is 180 degrees.

[0025] Fig. Figure 3 shows an embodiment of the wind drive with four longitudinal beam groups 4. In this case, the angle between adjacent longitudinal beam groups is 90 degrees. The arrow indicates the wind direction 20.

[0026] Each longitudinal beam 4 in the in Fig. In the embodiment shown in Figure 1, a mounting block 6 is formed in a plane that passes through the longitudinal axis 2a of the shaft. That is, the plane of the mounting block 6 is defined as the plane in which the longitudinal axis 2a of the shaft and the longitudinal axis 4a of the longitudinal beam lie. The Fig. The plane shown in the first image coincides with the drawing plane.

[0027] Accordingly, each group of longitudinal beams forms in Fig. 6 a fastening block 6. The group of longitudinal beams 4 includes those longitudinal beams 4 that lie in a plane that passes through the longitudinal axis 2a of the shaft. As in Fig. 1, the specified level falls into Fig. 6 together with the drawing plane.

[0028] At least one pair of main wings 8 is attached to each of the mounting blocks 6. The main wings 8 are rotatably mounted about one of their edge regions. In particular, if the main wing 8 has a rectangular shape, the rotation of the main wing 8 occurs about one of the sides of the rectangle. In the Fig. 1 and Fig. In the embodiments of the wind drive shown in Figure 6, the upper main blade 8 rotates about its lower edge region. Similarly, the lower main blade 8 rotates about its upper edge region. These edge regions of the upper and lower blades 8 are shown in Figure 6. Fig. In the embodiments of the wind drive shown in Figures 1-5, the main blade 8 is arranged on a common longitudinal beam 4. In each case, the axis of rotation of the main blade 8 lies in the plane of the corresponding mounting block 6. The axes of rotation of the edge regions of the main blades, which are arranged on a mounting block 6, run parallel to each other.

[0029] The main blades 8, which belong to a pair of main blades 8 and thus to a mounting block 6, are mechanically connected to each other via a block 10 of the mechanical connection between the main blades. The mechanical connection can be ensured, in particular, by a gear or lever mechanism or by a flexible connecting element. In one embodiment, the flexible connecting element can be designed as a rope or cord. In one embodiment of the wind drive, the flexible connecting element is attached to the upper and lower main blades 8 and runs through the transmission element of the mechanical connecting block between the main blades.

[0030] Block 10 of the mechanical connection between the main blades ensures simultaneous rotation of the main blades of a mounting block 6 in opposite directions. During this rotation, the main blades can assume two end positions, cyclically transitioning from one end position to the other during operation of the wind drive.

[0031] In the first end position, the angle is 3 to 30 degrees to a plane that is arranged perpendicular to the plane of the corresponding mounting block 6 and passes through the axis of rotation 8a of the corresponding main wing 8, wherein the first end position is the closed position of the main wing 8.

[0032] In the second end position, the angle to the same plane is from 70 to 110 degrees, with the second end position being the open position of the main wing 8.

[0033] Fig. Figure 3 shows a top view of the wind drive in an embodiment with four longitudinal beams 4 or groups of longitudinal beams 4. The operation of the wind drive based on this embodiment is explained in more detail below.

[0034] Fig. 4 and Fig. Figure 5 shows the wind propulsion with the main blades in their end positions. Figure 4. Fig. 4. The main blades of the wind drive 1 are in the open position under the influence of the wind, the direction of which 20 is indicated by the arrow and is directed towards the front of the mounting block 6. That is, the front of the mounting block is defined as the side on which the main blades 6 transition from the closed to the open position under the influence of the wind flow impinging upon them, or as the side facing the main blades 8 in their closed position. Correspondingly, the side of the mounting block 6 opposite the front of the mounting block is defined as the rear of the mounting block.

[0035] Block 10 of the mechanical connection ensures the simultaneous rotation of the main wings 8 in opposite directions.

[0036] Under the influence of the wind on the main blades 8, the wind drive 1 rotates 180 degrees around the longitudinal axis 2a of the shaft and the main blades 8 move into the Fig. 5 shows the closed position. The wind direction 20 is opposite to that shown in Fig. 4 shown and directed towards the rear of the fastening block 6, so that the pressure exerted by the wind on the main wings 8 leads to their simultaneous rotation and the main wings 8 thereby enter a position with minimal resistance to the wind flow, i.e. a closed position.

[0037] As in the Fig. As shown in Figures 1-5, the axes of rotation 8a of the edge regions of the main blades 8 are arranged perpendicular to the longitudinal axis 2a of the shaft. In another embodiment of the wind drive, the axes of rotation 8a of the edge regions of the main blades can be aligned parallel to the longitudinal axis 2a of the shaft (not shown in the figures).

[0038] In Fig. Figure 6 shows an embodiment of the wind drive in which each of the mounting blocks has a pair of longitudinal beams 4 arranged perpendicular to the shaft 2 on one side of the shaft 2. Accordingly, such a pair of longitudinal beams 4 is grouped together. One end of each longitudinal beam 4 of a pair is attached to the shaft 2, and the ends of the longitudinal beams 4 of the pair spaced apart from the shaft 2 are connected by a beam 12, which is optional.

[0039] As in Fig. As shown in Figure 6, each mounting block 6 has at least one additional wing 14. Analogous to the main wings 8, the additional wing 14 is rotatably mounted about one of its edge regions on one of the longitudinal members 4 of the mounting block 6. In particular, in this embodiment, the additional wing 14 is attached to the lower longitudinal member 4 of each mounting block 6. However, embodiments of the wind drive are possible in which the additional wing 14 is attached to the upper longitudinal member 4 of the mounting block 6. The axis of rotation 14a of the edge region of the additional wing 14 is arranged parallel to the axes of rotation 8a of the edge regions of the main wings 8 of the corresponding mounting block 6. The additional wing 14 is mechanically connected to at least one of the main wings 8 of the corresponding mounting block 6 via a mechanical connecting block 16 between the main wing and the additional wing. In the [figure 6] Fig. In the embodiment shown in Figure 6, the additional wing 14 is connected to the upper main wing 8 of the mounting block 6.

[0040] The additional mechanical connecting block 16 ensures that the auxiliary wing 14 rotates by the same angle and in the same direction as the main wing 8 to which the auxiliary wing 14 is mechanically connected. As with the main wings, at least one auxiliary wing 14 can assume an end position depending on the direction 20 of the wind flow relative to the wind drive. In the first end position, the auxiliary wing 14 is arranged at an angle of 3 to 30 degrees to a plane that is perpendicular to the plane of the corresponding mounting block 6 and passes through the axis of rotation 14a of the corresponding auxiliary wing 14. In this embodiment, the axis of rotation 14a of the auxiliary wing 14 is arranged in the plane of the mounting block 6. The first end position is the closed position of the auxiliary wing 14.

[0041] Accordingly, in the second end position, the additional wing 14 is arranged at an angle of 70 to 110 degrees to this plane, the second end position being the open position of the additional wing 14.

[0042] In the embodiment of the wind drive 1, in which the mounting block 6 is formed from two longitudinal beams, in the Fig. 7 and Fig. Figure 8 shows the arrangement of the main wings 8 and the additional wing 14 under the influence of the wind flow on the said wings.

[0043] In Fig. In Figure 7, the main blades 8 of the wind drive 1 and the auxiliary blades 14 are in the open position, with the wind acting on the front of the mounting block 6, the direction 20 of which is indicated by the arrow. The mechanical connecting block 10 ensures simultaneous rotation of the main blades in opposite directions. The additional mechanical connecting block 16 between the main blade and the auxiliary blade, in turn, ensures synchronous rotation of the auxiliary blade in the same direction as the upper main blade, as shown in Figure 7. Fig. Figure 7 shows that the space between the upper and lower main wings 8 is covered by the additional wing 14, thereby increasing the surface area on which the wind flow acts in the direction of 20.

[0044] As in the case of the mechanical connecting block 10 between the main wings, the additional mechanical connecting block 16 between the main wing and the auxiliary wing can be designed as a gear mechanism, a lever mechanism, or a flexible connecting element. If the flexible connecting element is designed as a rope or cord, the connection between the main wing 8 and the auxiliary wing 14 is made using transmission elements 17 of the additional mechanical connecting block between the main wing and the auxiliary wing. A flexible connecting element is connected to the transmission elements 17, which connects one of the main wings 8 to the auxiliary wing 14 of the same mounting block 6.

[0045] Under the influence of the wind on the main blades 8 and the additional blade 14, the wind drive 1 rotates 180 degrees about the longitudinal axis 2a of the shaft, and the main blades 8 and the additional blade 14 move into the Fig. 8 shows the closed position. The wind direction 20 is opposite to that shown in Fig. 7 shown wind direction, and the pressure exerted by the wind on the back of the mounting block, i.e. on the main wings 8 and the additional wing 14, causes a synchronous rotation of the same, so that the main wings 8 and the additional wing 14 move into a position with minimal resistance to the wind flow, i.e. into the closed position.

[0046] To fix the main blades 8 and / or the auxiliary blade 14 in the first and second end positions, the mounting blocks 6 of the wind drive 1 can be provided with retaining elements 18 (see Fig. 1, Fig. 2 and Fig. 6) In particular, the retaining elements can be arranged on the longitudinal beams 4, which form the corresponding mounting block 6. The retaining elements 18 prevent the main blades 8 and the auxiliary blade 14 from entering a position with an angle of inclination greater than that in the second end position, i.e., a state of minimal resistance under the influence of the wind flow impinging on the front of the mounting block. Correspondingly, other retaining elements (not shown in the figures) prevent the main blades 8 and the auxiliary blade 14 from entering a position with an angle of inclination less than that in the first end position.

[0047] In different embodiments of the wind drive, the angular distance between the main blades in the first and second end positions can be set such that in the first end position, i.e., in the closed position, the angle between the main blades 8 is between 6 and 60 degrees, preferably between 6 and 20 degrees, and in the second end position, i.e., in the open position, the angle between the main blades 8 is between 140 and 220 degrees, preferably between 170 and 190 degrees, particularly preferably 180 degrees. Each of the two main blades 8 is designed such that it can be rotated simultaneously with its associated other main blade 8 in opposite directions by an angle of 40 to 113 degrees, preferably 80 to 100 degrees, particularly preferably 90 degrees.The symmetrical rotation of the main blades ensures an even load on the main blades from the wind flow, which in turn leads to a continuous rotation of the wind drive around the longitudinal axis 2a of the shaft even at low wind speeds.

[0048] The rotational movement of the main blades 8 and at least one auxiliary blade 14 relative to the longitudinal beams 4 projecting radially from the shaft 2 is caused by the action of the wind flow. The main and auxiliary blades can be made of different materials whose stiffness is sufficient to withstand the pressure of the incident wind flow. Such materials can be woven or non-woven fabrics, sheet metal, plastic, structured fiberglass, or combinations thereof.

[0049] The proposed wind drive can be functionally connected to a generator (not shown in the figures) or another suitable device that converts the rotary motion of the drive into usable energy, for example electrical energy.

[0050] Preferably, the main and auxiliary blades can be rectangular, which simplifies their manufacture and provides maximum surface area for the wind flow to act upon. However, other shapes for the main and auxiliary blades are also possible.

[0051] In the preferred embodiment, the wind drive 1 is designed with four groups of longitudinal beams 4 and corresponding four mounting blocks 6, as shown in Fig. Figure 3 shows that the angular distance around the circumferential direction of the longitudinal axis 2a of the shaft between adjacent groups of longitudinal beams 4 is 90 degrees, i.e., they are arranged in the form of two diametrically opposed pairs. When using four groups of longitudinal beams, the wind drive 1 begins to rotate even at minimal starting torque. This ensures a more uniform rotation than with a wind drive 1 with two or three groups of longitudinal beams whose angles to each other are 180 degrees and 120 degrees, respectively.

[0052] Let us consider the operation of the wind turbine based on the example in Fig. 3 of the embodiment shown. In this case, the wind drive 1 has four longitudinal beams or longitudinal beam groups with main blades 8. The longitudinal beams or longitudinal beam groups are each in positions I, II, III and IV (see Figure 3). Fig.3) The clockwise angle between the first longitudinal beam group in position I with the main wings 8 and the third longitudinal beam group in position III with the main wings 8 is 180 degrees. Similarly, the angle between the second group of longitudinal beams in position II with the main wings 8 and the fourth group of longitudinal beams in position IV with the main wings 8 is also 180 degrees. Thus, in the configuration with four longitudinal beam groups, each group is offset by 90 degrees relative to the adjacent group and arranged in a position around the circumferential direction of the longitudinal axis 2a of the shaft.

[0053] In the embodiment under consideration, the mechanical connection between the main wings 8 of a group is established by means of a flexible connecting element 10.

[0054] During rotation, the lower main wing 8 transitions to position I. The wind flow 20, acting on the surface of the upper and lower main wings 8, forces them into a vertical position. During rotation, the main wings 8 transition to position II, in which the effect of the wind flow decreases. The overall effect of the wind force on the leading and trailing surfaces of the main wings reduces the opening angle of the main wings 8 due to their movement relative to the surrounding air.

[0055] In position III of the main wings 8, the wind flow 20 further causes the main wings 8 to transition into an almost horizontal position.

[0056] The situation in which the main wings 8 are in position IV is analogous to position II of the wings 8.

[0057] With further rotation of the wind drive, the common movement of the main blades 8 is repeated cyclically.

[0058] Thanks to the rotation described above, the main wings 8 on each group of longitudinal beams 4 provide a maximum area on which the wind flow from the front of the corresponding mounting block 6 acts, and thus a maximum torque on the vertical shaft 2 during the time at each revolution in which the main wings 8 assume the second end position, i.e. open position with respect to the direction of the wind flow, and a minimum area, corresponding to the minimum torque (i.e. the braking torque on the vertical shaft) during the time at each revolution in which the main wings 8 assume the first end position, i.e. closed position with respect to the direction of the wind flow acting on the back of the mounting block 6. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] RU 2128296 C1 [0003, 0021]

Claims

[1] wind propulsion (1) having: - a shaft (2) which is rotatably mounted about its longitudinal axis (2a), - at least two longitudinal beams (4) or at least two groups of longitudinal beams (4) attached and spaced apart on the shaft, which are arranged at equal angular intervals to each other around the circumferential direction of the longitudinal axis (2a) of the shaft and form a corresponding number of fastening blocks (6) in the planes passing through the longitudinal axis (2a) of the shaft, and - at least one pair of main wings (8) mounted on each of the mounting blocks (6), the main wings being mounted such that each main wing (8) is rotatably mounted about one of its edge regions, the axis of rotation (8a) of which is arranged in a plane of the corresponding mounting block (6), wherein the axes of rotation (8a) of the edge regions of the main wings (8) of a pair are arranged parallel to each other, characterized by, that the main wings (8) of each pair of main wings (8) are mechanically connected to each other in such a way that both main wings (8) can be rotated simultaneously in opposite directions and form in their end positions: - in the first end position at an angle of 3 to 30 degrees to a plane that is perpendicular to the plane of the corresponding mounting block (6) and passes through the axis of rotation (8a) of the corresponding main wing (8), wherein the first end position is the closed position of the main wing (8), and - in the second end position an angle of 70 to 110 degrees to the same plane, the second end position being the open position of the main wing (8). [2] Wind propulsion (1) according to claim 1, characterized by that the axes of rotation (8a) of the edge regions are arranged perpendicular or parallel to the longitudinal axis (2a) of the shaft. [3] Wind drive (1) according to claim 1 or 2, characterized by, that the mechanical connection (10) between the main wings (8) of a fastening block (6) is designed in the form of a gear mechanism, a lever mechanism or a flexible connecting element. [4] Wind propulsion (1) according to any one of the preceding claims, characterized by , that the aforementioned edge areas of the main wings (8) are arranged on a longitudinal beam (4) common to them. [5] Wind drive (1) according to any one of the preceding claims, characterized by, that each fastening block further comprises at least one additional wing (14), wherein the additional wing (14) is rotatably mounted about one of its edge regions, the axis of rotation (14a) of which is arranged parallel to the axes of rotation (8a) of the edge regions of the main wings (8) of the corresponding fastening block (6), and is mechanically connected to at least one of the main wings (8) of the same corresponding fastening block (6), wherein this additional wing (14) is rotatable about the same angle and in the same direction as one of the main wings (8) to which it is mechanically connected, namely - in the first end position at an angle of 3 to 30 degrees to a plane that is perpendicular to the plane of the corresponding mounting block (6) and passes through the axis of rotation (14a) of the corresponding additional wing (14), wherein the first end position is the closed position of the additional wing (14), and - in the second end position at an angle of 70 to 110 degrees to the same plane, the second end position being the open position of the additional wing (14). [6] Wind drive (1) according to claim 5, characterized by , that the mechanical connection (16) between the main wing (8) and the additional wing (14) of a mounting block (6) is designed as a gear drive, lever drive or flexible connecting element. [7] Wind drive (1) according to claim 3 or 6, characterized by that the flexible connecting element is a rope or cord. [8] Wind drive (1) according to one of claims 5-7, characterized by , that for one or more pairs of main wings (8) at least one additional wing (14) is designed such that the space between the main wings (8) of the same fastening block (6) in their open position can be covered by the additional wing (14) in its open position. [9] Wind drive (1) according to one of claims 5-8, characterized by , that the fastening block (6) has retaining elements (18) for fixing the main wing (8) and / or the additional wing (14) in their closed and open positions. [10] Wind drive (1) according to claim 9, characterized by , that the retaining elements (18) are arranged on the longitudinal beams (4) which form a corresponding fastening block (6). [11] Wind drive (1) according to one of claims 5-10, characterized by , that the main wings (8) and at least one additional wing (14) are made of a material from the group comprising woven or non-woven fabric, sheet metal, plastic, structured fiberglass or combinations thereof. [12] Wind drive (1) according to any one of the preceding claims, characterized by, that in the first end position, i.e. in the closed position, the angle between the main wings (8) is 6 to 60 degrees, preferably 6 to 20 degrees, and in the second end position, i.e. in the open position, the angle between the main wings (8) is 140 to 220 degrees, preferably 170 to 190 degrees, particularly preferably 180 degrees. [13] Wind drive (1) according to any one of the preceding claims, characterized by , that each of the two main wings (8) is designed such that it can be rotated in opposite directions by an angle of 40 to 113 degrees simultaneously with the other main wing (8) associated with it, preferably by 80 to 100 degrees, particularly preferably by 90 degrees. [14] Wind drive (1) according to any one of the preceding claims, characterized by , that the main wings (8) of the same mounting block (6) have the same mass and area. [15] Wind drive (1) according to any one of the preceding claims, characterized by, that the main wings (8) of the same fastening block (6) are arranged symmetrically to the longitudinal axis (4a) of the longitudinal beam.

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