Six-rod tensegrity windmill

Abstract

The invention relates to a six-rod stretch-draw integral windmill which comprises a six-rod stretch-draw integral frame, the six-rod stretch-draw integral frame is of a regular icosahedron structure, the outer side of the six-rod stretch-draw integral frame is covered with a sail unit, and a main shaft is arranged at the position of a center shaft in the six-rod stretch-draw integral frame in a penetrating mode. And the main shaft is rotatably connected with the six-rod tensioning integral frame through a rotary connecting assembly. According to the six-rod stretch-draw integral frame, flexible connection is introduced, the structural strength and stability are guaranteed while windmill consumables are reduced, and compared with a traditional windmill, the structure is more tough. The six-rod tensioning integral frame has the advantage of being easy to disassemble and carry, and is suitable for disassembly, assembly and transportation in multiple scenes. Due to the design of the sail units, the effective wind catching area is increased, and the utilization rate of multidirectional wind energy is increased. The device is suitable for urban wind energy capture and rural distributed power generation, and is attractive in structure and low in maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a six-rod tensegrity windmill. Background Art

[0002] A wind turbine (wind turbine) is a device that converts wind energy into electricity and is a key component of renewable energy technology. Its operating principle is as follows: wind propels the blades, converting the wind's kinetic energy into mechanical energy. The blades, through a transmission system (such as a gearbox), drive a generator, converting the mechanical energy into electrical energy. The generated electricity is then boosted by a transformer and fed into the grid or stored in batteries for local use.

[0003] Existing wind turbines have complex structures and are prone to mechanical failures such as vibration and deformation in strong winds, poor steering, and abnormal noise. Existing wind turbines often have extra-long blades, which are subject to aeroelastic coupling effects. In extreme cases, this can cause flutter or breakage, especially in extreme weather conditions. For example, offshore wind turbines must withstand a Category 17 typhoon, and blade loads often exceed design limits, leading to frequent breakage accidents. The complex structure also leads to high costs for disassembly, assembly, transportation, and maintenance. Existing wind turbines typically have three blades that can only capture wind energy in one direction, resulting in low utilization rates of multi-directional wind energy.

[0004] The clean energy properties of wind power generation are irreplaceable, so the above problems need to be solved urgently. Summary of the Invention

[0005] Aiming at the problems of low utilization rate of multi-directional wind energy and easy vibration and deformation under strong wind in existing windmills, a six-rod tensegrity windmill is proposed.

[0006] The technical solution of the present invention is: a six-bar tensegrity windmill, including a six-bar tensegrity frame, the six-bar tensegrity frame is a regular icosahedron structure, the outer side of the six-bar tensegrity frame is covered with a sail unit, the main shaft is passed through the central axis inside the six-bar tensegrity frame, and the main shaft is rotatably connected to the six-bar tensegrity frame through a rotating connection assembly.

[0007] Preferably, the six-rod tensioned integral frame includes rod members and cable members, with every two rod members forming a group, and there are three groups in total. The rod members of each group are parallel to each other, one group of rod members is arranged between one of the groups of rod members, the three groups of rod members are perpendicular to each other, and the distances between the three mutually perpendicular groups of rod members are the same. One end of each rod member is connected to the two ends of a nearby and perpendicular rod member through a cable member, and is also connected to the nearby ends of two rod members that are close to its center and perpendicular.

[0008] Preferably, the main shaft passes through a triangular area formed by end points of three adjacent rod members, and passes through a triangular area formed by end points of three adjacent rod members on the opposite side.

[0009] Preferably, the sail unit comprises a quadrilateral sail, which is arranged on each quadrilateral region of the surface of the six-bar tensegrity frame, and the four sides of the quadrilateral sail are connected to the cable members of the quadrilateral region of the space and kept in a tensioned state.

[0010] Preferably, the sail unit includes a wind-catching sail, which is a spatial arc-shaped surface and is located on a side of the quadrilateral sail away from the main axis.

[0011] Preferably, the wind-catching sail is provided with three edges, two of which are respectively connected to the adjacent two sides of the quadrilateral sail and are connected to the cable member through the side edges of the quadrilateral sail; a wind-catching port is provided between the other edge and the quadrilateral sail.

[0012] Preferably, the wind-catching openings are grid-shaped sails, and the wind-catching openings of the wind-catching sails in the same horizontal direction are in the same direction.

[0013] Preferably, the rotary connection assembly includes a plurality of flexible cables and a plurality of bearings, the inner rings of the bearings are fixedly sleeved at the points where the main shaft enters and exits the six-bar tensegrity frame, and the bearings are connected to the six-bar tensegrity frame via flexible cables.

[0014] Preferably, one end of the flexible cable is connected to an end point of a rod member close to the bearing, and the other end is fixedly connected to an outer ring of the bearing, and the outer ring of the bearing and the flexible cable are kept in a tensioned state.

[0015] Preferably, the angles between the flexible cables connected to the same bearing are the same.

[0016] The beneficial effects of this invention are as follows: By introducing flexible connections, the six-bar tensegrity frame reduces windmill material consumption while maintaining structural strength and stability, resulting in a more resilient structure than traditional windmills. The six-bar tensegrity frame is easy to disassemble and carry, making it suitable for assembly and transportation in various scenarios. The sail unit design increases the effective wind-catching area and improves the utilization of multi-directional wind energy. It is suitable for urban wind energy capture and rural distributed power generation applications, with an aesthetically pleasing structure and low maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of a six-rod tensegrity windmill according to the present invention;

[0018] Figure 2 A perspective view of a six-bar tensegrity frame according to the present invention;

[0019] Figure 3 is a perspective view of a sail unit of the present invention;

[0020] Figure 4 This is a schematic diagram of the connection of the sail unit of the present invention;

[0021] Figure 5 Schematic diagram of the connection of the rotary connection assembly of the present invention.

[0022] In the figures, the component names corresponding to the reference numerals are as follows:

[0023] 1. Six-bar tensegrity frame; 11. Rod member; 12. Cable member; 2. Sail unit; 21. Quadrilateral sail; 22. Wind-catching sail; 23. Wind-catching port; 3. Rotary connection assembly; 31. Flexible cable; 32. Bearing; 4. Main shaft. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0025] refer to Figure 1 As shown, an embodiment of the present application discloses a six-bar tensegrity windmill, including a six-bar tensegrity frame 1, wherein the six-bar tensegrity frame 1 is a regular icosahedron structure, the outer side of the six-bar tensegrity frame 1 is covered with a sail unit 2, and the main shaft 4 is arranged at the inner center axis of the six-bar tensegrity frame 1, and the main shaft 4 is rotatably connected to the six-bar tensegrity frame 1 through a rotating connection assembly 3.

[0026] refer to Figure 1 、 2 As shown, the six-bar tensegrity frame 1 includes rod members 11 and cable members 12. In this embodiment, there are 6 rod members 11, wherein every two rod members 11 form a group, and there are three groups in total. The rod members 11 of each group are parallel to each other, and one group of rod members 11 is arranged between the rod members 11 of one group. The three groups of rod members 11 are perpendicular to each other, and the distances between the three mutually perpendicular groups of rod members 11 are the same. One end of each rod member 11 is connected to the two ends of a nearby and perpendicular rod member 11 through the cable member 12, and is also connected to the nearby ends of two rod members 11 near its center and perpendicular.

[0027] The main shaft 4 enters from a triangular region formed by the end points of three adjacent rod members 11 and exits from a triangular region formed by the end points of three adjacent rod members 11 on the opposite side.

[0028] refer to Figure 3 、 4 As shown, the sail unit 2 includes a quadrilateral sail 21 and a wind-catching sail 22. The quadrilateral sail 21 is arranged in each spatial quadrilateral area on the surface of the six-bar tensioned integral frame 1. The four sides of the quadrilateral sail 21 are connected to the cable members 12 in the spatial quadrilateral area and kept in a tensioned state, so the quadrilateral sail 21 is a cable-membrane structure.

[0029] The wind-catching sail 22 is located on the side of the quadrilateral sail 21 away from the main shaft 4. Made of a flexible material, it has a spatially curved surface. Three edges surround the sail 22, two of which are connected to two adjacent sides of the quadrilateral sail 21 and indirectly connected to the cable member 12 via the sides of the quadrilateral sail 21. Between the other edge and the quadrilateral sail 21 lies the inlet end of the sail 22, where a wind-catching opening 23 is provided. Wind-catching openings 23 of sails 22 in the same horizontal direction align in the same direction. This creates a "pocket"-like structure for the sail 22 and the quadrilateral sail 21. The sail 22 is used to enhance wind energy capture.

[0030] Therefore, a pressure difference is generated between the windward side and the leeward side of the quadrilateral sail 21 due to the airflow, and this pressure difference cooperates with the structure of the wind-catching sail 22 to drive the windmill to start rotating.

[0031] The wind-catching opening 23 is a grid-shaped sail, and is used to guide airflow to enter.

[0032] refer to Figure 1 、 5 As shown, the rotating connection assembly 3 includes a flexible cable 31 and a bearing 32. The flexible cable 31 can be a flexible steel cable. The inner ring of the bearing 32 is fixedly sleeved at the place where the main shaft 4 enters and exits the six-bar tensioned integral frame 1, that is, the bearing 32 is set at the top center and bottom center of the six-bar tensioned integral frame 1.

[0033] The bearing 32 is connected to the six-bar tensegrity frame 1 via a flexible cable 31 .

[0034] Furthermore, three flexible cables 31 are provided at the top and bottom of the six-bar tensegrity frame 1, one end of each flexible cable 31 is connected to the end of the rod member 11 near the bearing 32, and the other end is fixedly connected to the outer ring of the bearing 32. The outer ring of the bearing 32 and the flexible cable 31 are kept in a tensioned state.

[0035] The flexible cables 31 connected to the same bearing have the same included angle, ensuring that the six-bar tensegrity frame and the main shaft form a stable rotation center.

[0036] The specific working principle is as follows: the operation of the present invention is to achieve the smooth rotation of the windmill and the capture and conversion of wind energy through the synergy between the various components. When the present invention is in operation, the sail unit 2 uses the quadrilateral sail 21 as the basic wind-catching surface, and increases the wind-catching area through the spatial arc surface of the wind-catching sail 22 and the grid-shaped built-in sail design. At the same time, the wind-catching port 23 optimizes the airflow guidance, so that the airflow entering the sail unit 2 flows stably. The pressure difference between the front and back sides of the sail unit 2 is generated due to the airflow, driving the windmill to start rotating. During the rotation process, the six-bar tensioned overall frame 1 plays a mechanical support role. The six-bar tensioned overall frame 1 provides rigid support through six rod components 11, and the twenty-four cable components 12 achieve self-balancing of the overall structure through tensioning, so that the six-bar tensioned overall frame 1 can evenly disperse the wind load and effectively improve the wind-resistant vibration performance. The rotary connection assembly 3, through the combination of upper and lower sets of flexible cables 31 and bearings 32, achieves a flexible connection between the main shaft 4 and the six-bar tensegrity frame 1. This absorbs and cushions vibrations from the sail unit 2 and transmits the rotation of the six-bar tensegrity frame 1 to the main shaft 4. The main shaft then transmits mechanical energy to the generator, completing the conversion of wind energy into electrical energy.

[0037] The beneficial effects are as follows: By incorporating flexible connections, the six-bar tensegrity frame 1 of the present invention reduces wind turbine material consumption while maintaining structural strength and stability, resulting in a more resilient structure compared to traditional wind turbines. The six-bar tensegrity frame 1 is easily disassembled and portable, making it suitable for assembly and transport in various scenarios. The design of the sail unit 2 increases the effective wind-catching area and improves the utilization of multi-directional wind energy. It is suitable for urban wind energy capture and rural distributed power generation applications, offering an aesthetically pleasing structure and low maintenance costs.

[0038] It should be noted that the orientations or positional relationships indicated by the above-mentioned terms "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. "Multiple" means two or more. "Installation", "connected", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the scope of protection of the present invention. Any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the spirit and scope of the present invention by using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A six-rod tension windmill, characterized in that: The invention comprises a six-bar tension frame (1), wherein the six-bar tension frame (1) is a regular icosahedron structure, the outer side of the six-bar tension frame (1) covers a sail unit (2), a main shaft (4) is arranged at the inner central axis of the six-bar tension frame (1), and the main shaft (4) is rotatably connected to the six-bar tension frame (1) via a rotary connection component (3).

2. The six-rod tension windmill according to claim 1, characterized in that: The six-rod tensioning frame (1) comprises rod members (11) and cable members (12), with two rod members (11) forming a group, and a total of three groups. The rod members (11) of each group are parallel to each other, one group of rod members (11) is arranged between the rod members (11) of one group, the three groups of rod members (11) are perpendicular to each other, and the distances between the three mutually perpendicular groups of rod members (11) are the same. One end of each rod member (11) is connected to the two ends of a rod member (11) adjacent and perpendicular to it through the cable member (12), and is also connected to the adjacent ends of two rod members (11) adjacent and perpendicular to it.

3. The six-rod tension windmill according to claim 2, characterized in that: The main shaft (4) passes through a triangular area formed by the end points of three adjacent rod members (11) and passes through a triangular area formed by the end points of three adjacent rod members (11) on the opposite side.

4. The six-rod tension windmill according to any one of claims 2 or 3, characterized in that: The sail unit (2) comprises a quadrilateral sail (21), which is arranged on each spatial quadrilateral area on the surface of the six-bar tensioning frame (1), and the four sides of the quadrilateral sail (21) are connected to the cable components (12) of the spatial quadrilateral area and maintained in a tensioned state.

5. The six-rod tension windmill according to claim 4, characterized in that: The sail unit (2) comprises a wind-catching sail (22), which is a spatial arc-shaped surface. The wind-catching sail (22) is located on a side of the quadrilateral sail (21) away from the main axis (4).

6. The six-rod tension windmill according to claim 5, characterized in that: The wind-catching sail (22) is provided with three edges around it, two of which are respectively connected to the adjacent two sides of the quadrilateral sail (21) and are connected to the cable member (12) through the side edges of the quadrilateral sail (21); and a wind-catching port (23) is provided between the other edge and the quadrilateral sail (21).

7. The six-rod tension windmill according to claim 6, characterized in that: The wind-catching openings (23) are grid-shaped sails, and the wind-catching openings (23) of the wind-catching sails (22) in the same horizontal direction are in the same direction.

8. The six-rod tension windmill according to claim 3, characterized in that: The rotary connection assembly (3) comprises a plurality of flexible steel cables (31) and a plurality of bearings (32). The inner rings of the bearings (32) are fixedly sleeved at the locations where the main shaft (4) passes through and exits the six-bar tensioning frame (1). The bearings (32) are connected to the six-bar tensioning frame (1) via the flexible steel cables (31).

9. The six-rod tension windmill according to claim 8, characterized in that: One end of the flexible steel cable (31) is connected to the end point of the rod member (11) close to the bearing (32), and the other end is fixedly connected to the outer ring of the bearing (32). The outer ring of the bearing (32) and the flexible steel cable (31) are kept in a tensioned state.

10. The six-rod tension windmill according to claim 8, characterized in that: The angles between the flexible steel cables (31) connected to the same bearing are the same.

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