Windmill blades and vertical windmills

Abstract

The present application provides a windmill blade and a vertical windmill, which relate to the field of wind power generation technology. The windmill blade of the vertical windmill includes: a flat blade body, the two surfaces of the blade body are planes, the blade body has a blade axis, and the blade body has a first edge and a second edge located on opposite sides of the blade axis. A spoiler, one side of the spoiler is set on the first edge, and the other side of the spoiler protrudes from the surface of the blade body. The windmill blade on the vertical windmill meets the above structure, and the main and direct structure that bears the wind is the flat blade body, so that the force borne by the blade body is larger and the wind is more uniform; the setting of the spoiler can make the wind blowing onto the blade body less likely to slide away from the edge of the blade, increase the time the wind stays on the blade, and thus increase the utilization rate of the wind; at the same time, it increases the thrust at the edge of the blade, which plays a lever role on the vertical windmill with resistance-type power generation, thereby improving the power generation efficiency of the vertical windmill.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a windmill blade and a vertical windmill. Background Art

[0002] A vertical windmill typically features vertical blades. When wind strikes the blades, the force exerted on them by the wind causes the main shaft connected to the blades to rotate, generating electricity for the generator connected to the main shaft. However, existing vertical windmills do not utilize wind efficiently. Summary of the Invention

[0003] The embodiments of the present application provide a windmill blade and a vertical windmill, which can improve the utilization rate of wind, thereby improving the power generation efficiency of the vertical windmill.

[0004] In a first aspect, embodiments of the present application provide a wind turbine blade for a vertical wind turbine, comprising: a flat blade body, two surfaces of the blade body being planar, the blade body having a blade axis, and the blade body having a first edge and a second edge located on opposite sides of the blade axis; and a spoiler, one side of the spoiler being disposed at the first edge, the other side of the spoiler protruding from the surface of the blade body.

[0005] In the above technical solution, the windmill blades on the vertical windmill meet the above structure. On the one hand, the structure that mainly and directly bears the wind is the flat blade body, which can make the planar structure of the blade body carry the wind, so that the force carried by the blade body is larger, and the wind carried on the blade body is also more uniform, so as to increase the utilization rate of the wind; on the other hand, the setting of the spoiler can make the wind blown onto the blade body less likely to slide away from the edge of the blade, thereby increasing the time the wind stays on the blade, thereby increasing the utilization rate of the wind; at the same time, the thrust at the edge of the blade is increased, which plays a lever role on the vertical windmill with resistance-type power generation, thereby improving the power generation efficiency of the vertical windmill.

[0006] In a possible implementation, both the first edge and the second edge are provided with spoilers.

[0007] In the above technical solution, wind can be blocked on both sides of the blade body, further increasing the time and amount of wind carried by the blade, thereby increasing wind utilization. Furthermore, when the windmill blades rotate, they typically rotate around the blade axis. Spoilers are provided on opposite sides of the blade axis. As the windmill blades rotate around the blade axis, the wind blocked by the spoilers increases the time of wind carried as the blades rotate. At the same time, the thrust at the blade edges is increased, acting as a lever for the vertical windmill with resistance-type power generation, increasing the force acting on the blade axis to rotate, thereby improving wind utilization.

[0008] In a possible implementation, the blade body further has a third edge and a fourth edge through which the blade shaft passes, and the first edge, the second edge, the third edge, and the fourth edge are all provided with spoilers.

[0009] In the above technical solution, the wind can be blocked by the spoilers arranged in the circumferential direction of the blade body to prevent the wind from quickly sliding away from the blade body. At the same time, the thrust at the blade edge is increased, making the wind utilization rate higher.

[0010] In a possible implementation, the spoiler is in the shape of a flat plate, is arranged obliquely, and protrudes from the plane of the blade body.

[0011] In the above technical solution, when the wind blows onto the blade body, the inclined spoiler can prevent the wind from sliding away from the edge of the blade to a certain extent. At the same time, it increases the thrust at the edge of the blade to improve the utilization rate of the wind, and the structure of the blade is also relatively simple.

[0012] In a possible implementation, the angle between the surface where the spoiler is located and the surface where the blade body is located is 15°-60°.

[0013] In the above technical solution, the amount and time that wind stays on the blades can be increased, thereby increasing the force acting on the blade shaft to rotate; better wind blocking effect can be achieved when the spoiler is narrow; and excessive wind accumulation at the spoiler can be avoided, thereby preventing the windmill blades from being damaged due to uneven force.

[0014] In a possible implementation, the angle between the surface where the spoiler is located and the surface where the blade body is located is 30°-45°.

[0015] In a possible implementation, the spoiler is arc-shaped, and there is a smooth transition between the blade body and the spoiler.

[0016] In the above technical solution, since the spoiler is arc-shaped, when the wind slides along the edge of the blade, the trajectory of the wind is arc-shaped, which can make the wind act on the edge of the blade for a longer time. At the same time, the thrust at the edge of the blade is increased, so as to improve the utilization rate of the wind when the spoiler is narrow.

[0017] In a possible implementation, the arc surface of the spoiler is tangent to the surface of the blade body, and the arc of the spoiler is π / 6-π / 4 rad.

[0018] In the above technical solution, the amount and time that wind stays on the blades can be increased, thereby increasing the force acting on the blade shaft to rotate; the wind at the edge of the blade slides along the curved surface, thereby achieving a better wind blocking effect when the spoiler is narrow; it can also avoid excessive wind accumulation at the spoiler, thereby avoiding damage to the windmill blades due to uneven force.

[0019] In a possible implementation, along the direction from the first edge to the second edge, the width of the spoiler is 0.005-0.1 times the width of the blade body.

[0020] In the above technical solution, the spoiler of this width can, on the one hand, block the flow, and on the other hand, the width of the spoiler is relatively narrow, thereby avoiding a significant increase in the weight of the windmill blades.

[0021] In a possible implementation, spoilers are protruding from both surfaces of the blade body.

[0022] In the above technical solution, any surface of the blade body exposed to wind can improve the utilization rate of the wind.

[0023] In a possible implementation, along an axial direction perpendicular to the blade shaft, the cross section of the windmill blade is S-shaped, X-shaped, or Y-shaped.

[0024] In the above technical solution, the use of spoilers can improve wind utilization wherever any surface of the blade body is exposed to wind. If the blade has an S-shaped or X-shaped cross-section, the windmill blade typically rotates about the blade axis. Spoilers are provided on opposite sides of the blade axis and are distributed symmetrically along the axis. As the windmill blade rotates about the blade axis, the wind blocked by the spoilers increases the time the wind is carried as the blade rotates, increasing the force exerted by the blade axis' rotation, thereby improving wind utilization.

[0025] In a possible implementation, the blade body includes a square plate and a trapezoidal plate that are connected to each other, and the blade shaft passes through the square plate and the trapezoidal plate.

[0026] In the above technical solution, when installing windmill blades, the square plate is usually located on the top and the trapezoidal plate is located on the bottom. The square plate on the top is the main component that bears the wind, and the trapezoidal plate is conducive to the installation of other components, which facilitates the installation of windmill blades while meeting a larger wind-receiving area.

[0027] In a second aspect, embodiments of the present application provide a vertical windmill comprising a main shaft, a plurality of windmill blades according to any one of the first aspects, and a mounting frame. Each windmill blade is vertically mounted, the mounting frame being fixed to the main shaft, and the plurality of windmill blades being rotatably mounted on the mounting frame and spaced apart around the main shaft. The windmill blades are configured such that, when acted upon by wind, the main shaft is driven to rotate via the mounting frame, and the windmill blades rotate along the vertical blade axis.

[0028] In the above technical solution, the windmill blades of the vertical windmill can both rotate on their own and revolve synchronously with the main shaft. On the one hand, electricity is generated by a generator connected to the main shaft; on the other hand, while the windmill blades rotate synchronously with the main shaft, the windmill blades also rotate on their own, which can increase the wind exposure time of the windmill blades during rotation and the thrust at the edges of the blades, thereby improving the power generation efficiency.

[0029] In one possible implementation, the vertical windmill further includes a transmission mechanism comprising a main gear and multiple transmission assemblies. The main gear is rotatably mounted on a main shaft, and a transmission assembly is connected to the main gear and a vertically mounted windmill blade, respectively. The transmission assembly is configured such that when the main shaft rotates, one end of the transmission assembly rolls on the main gear, thereby causing the corresponding windmill blade to rotate through the transmission assembly.

[0030] In the above technical solution, through the cooperation of the main shaft, main gear and transmission assembly, the position of the main gear will not be affected when the windmill blades and the main shaft rotate synchronously, thereby cooperating with the transmission assembly to enable each windmill blade to rotate around the vertical blade shaft.

[0031] In one possible implementation, the main gear is the first conical tooth, and the transmission assembly includes the second conical tooth, a transmission rod, the third conical tooth and the fourth conical tooth. The second conical tooth is engaged with the first conical tooth, and the axis of the first conical tooth is perpendicular to the axis of the second conical tooth; the second conical tooth and the third conical tooth are respectively fixed at both ends of the transmission rod so that the three rotate synchronously; the fourth conical tooth is fixed to the lower end of the blade shaft of the windmill blade so that the two rotate synchronously, and the fourth conical tooth is engaged with the third conical tooth.

[0032] In the above technical solution, the rotation of the blade shaft and the synchronous rotation of the windmill blades and the main gear can be conveniently controlled.

[0033] In one possible implementation, the vertical windmill also includes a wind-facing mechanism, which drives and connects the main gear. The wind-facing mechanism is configured as follows: the wind-facing mechanism drives the main gear to rotate around the main shaft, so as to cause the corresponding windmill blades to rotate through the transmission assembly, thereby adjusting the angle between the blade body and the wind direction.

[0034] In the above technical solution, the setting of the main gear can, on the one hand, control the rotation of the blade shaft of the windmill blade, and on the other hand, control the transmission of the main gear through the wind-facing mechanism to cooperate with the transmission component to adjust the angle between the blade body and the wind direction, thereby realizing the wind-facing of the windmill blade. Moreover, the main gear and transmission component are shared by power generation and wind-facing, which can make the structure of the vertical windmill simpler.

[0035] In one possible implementation, the wind-facing mechanism includes a sleeve and a wind-facing drive assembly. The sleeve is rotatably mounted outside the main shaft and is fixedly connected to the main gear. The wind-facing drive assembly drives the sleeve to rotate so that the main gear rotates synchronously.

[0036] In the above technical solution, the rotation of the main shaft and the main gear can be controlled separately to carry out wind control and power generation.

[0037] In one possible implementation, the wind drive assembly includes a sprocket, a chain, and a drive member. The sprocket is fixed outside the sleeve, the chain is engaged with the sprocket, and the drive member drives the connecting chain to make the sleeve and the sprocket rotate synchronously.

[0038] In the above technical solution, the sleeve and the sprocket can be arranged to drive the main gear to rotate, thereby facing the wind with the wind turbine blades.

[0039] In a possible implementation, the vertical windmill further includes a bracket, the sleeve includes an upper sleeve and a lower sleeve, the upper sleeve and the lower sleeve are both rotatably sleeved outside the main shaft, the sprocket is fixed to the upper sleeve, and the lower sleeve is fixed to the bracket.

[0040] In the above technical solution, on the one hand, the lower sleeve can be fixed to support the main body of the vertical windmill and make the structure of the vertical windmill more stable; on the other hand, it is convenient to align the windmill blades with the wind.

[0041] In one possible implementation, a bearing assembly is disposed between the sleeve and the main shaft. The bearing assembly includes, from top to bottom, a first roller bearing, a first thrust bearing, a second roller bearing, a second thrust bearing, and a first pressure block and a second pressure block. The first roller bearing and the first thrust bearing are located between the upper sleeve and the main shaft, the first pressure block is disposed between the first thrust bearing and the main shaft, the second roller bearing and the second thrust bearing are located between the lower sleeve and the main shaft, and the second pressure block is disposed between the lower sleeve and the second thrust bearing. A step is disposed on the outer wall of the main shaft. From top to bottom, the step is sequentially pressed against the inner ring of the first roller bearing, the first pressure block, the inner ring of the second roller bearing, and the upper ring of the second thrust bearing.

[0042] In the above technical solution, the rotation speed of the main shaft will not be affected by the sleeve, so that the power generation of the generator connected to the main shaft is higher; on the other hand, relative rotation between the main shaft and the upper sleeve can be achieved, and the rotation of the two will not be affected by each other, so that the wind and power generation will not be affected by each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 A schematic structural diagram of a vertical windmill provided in an embodiment of the present application;

[0045] Figure 2 A schematic diagram of the lower structure of a vertical windmill provided in an embodiment of the present application;

[0046] Figure 3 A schematic diagram of the installation structure of the transmission mechanism in the vertical windmill provided in an embodiment of the present application;

[0047] Figure 4 A schematic diagram of the positions of multiple windmill blades in a vertical windmill provided in an embodiment of the present application;

[0048] Figure 5 A schematic diagram of the installation structure of the wind-directing mechanism in the vertical windmill provided in an embodiment of the present application;

[0049] Figure 6 A schematic diagram of a first installation structure of a bearing assembly and a sleeve in a vertical windmill provided in an embodiment of the present application;

[0050] Figure 7 A schematic diagram of a second installation structure of a bearing assembly and a sleeve in a vertical windmill provided in an embodiment of the present application;

[0051] Figure 8 A schematic diagram of the first structure of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0052] Figure 9 A schematic diagram of a second structure of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0053] Figure 10 A third structural schematic diagram of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0054] Figure 11 A first cross-sectional view of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0055] Figure 12 A fourth structural schematic diagram of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0056] Figure 13 A fifth structural schematic diagram of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0057] Figure 14 A sixth structural schematic diagram of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0058] Figure 15 A second cross-sectional view of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0059] Figure 16 A third cross-sectional view of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0060] Figure 17 A fourth cross-sectional view of a windmill blade in a vertical windmill provided in an embodiment of the present application;

[0061] Figure 18 This is a fifth cross-sectional view of a windmill blade in a vertical windmill provided in an embodiment of the present application.

[0062] Icons: 10-windmill body; 11-main shaft; 12-windmill blades; 121-blade shaft; 122-blade body; 123-spoiler; 122a-first edge; 122b-second edge; 122c-third edge; 122d-fourth edge; 122e-first inclined edge; 122f-second inclined edge; 1221-square plate; 1222-trapezoidal plate; 13-mounting frame; 131-connecting rod; 132-support rod; 133-pull rod; 14-transmission mechanism; 141-main gear; 142-transmission assembly; 143-second conical gear; 144-transmission Rod; 145-third conical tooth; 146-fourth conical tooth; 15-wind-facing mechanism; 151-sleeve; 152-wind-facing drive assembly; 1521-sprocket; 1522-chain; 1523-driving member; 1511-upper sleeve; 1512-lower sleeve; 16-bearing assembly; 161-first roller bearing; 162-first thrust bearing; 163-second roller bearing; 164-second thrust bearing; 165-first pressure block; 166-second pressure block; 167-bearing pressure block; 1671-inner ring block; 1672-outer ring block; 17-generating tooth; 18-generating mechanism. DETAILED DESCRIPTION

[0063] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0065] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0066] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0067] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0068] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0069] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application 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 a limitation on the embodiments of the present application.

[0070] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0071] Figure 1 This is a schematic diagram of the structure of the vertical windmill provided in the embodiment of this application. Figure 1 The vertical windmill includes a bracket ( Figure 1 The windmill body 10 is a multi-layer windmill body 10 (not shown) and is arranged on the bracket. Each layer of the windmill body 10 can drive the main shaft to rotate. The more layers of the windmill body 10, the more blades are arranged, the more wind energy can be utilized, the greater the power of the power generation equipment driven, and the more electricity generated.

[0072] The bracket is a component that provides support for the entire vertical windmill body; a multi-layer windmill body 10 means that each layer of windmill bodies 10 is arranged sequentially from top to bottom, and the height of the vertical windmill can be adjusted according to the number of layers of windmill bodies 10. The following uses one layer of windmill bodies 10 as an example to explain the power generation principle of the vertical windmill:

[0073] Figure 2 The schematic diagram of the lower structure of the vertical windmill provided in the embodiment of the present application is shown in FIG. Figure 2 The windmill body 10 includes a main shaft 11, a plurality of windmill blades 12, and a mounting frame 13. The mounting frame 13 is fixed to the main shaft 11, and the plurality of windmill blades 12 are rotatably mounted on the mounting frame 13 and spaced apart around the main shaft 11. The windmill blades 12 are configured such that, when affected by wind, the main shaft 11 rotates via the mounting frame 13, and the windmill blades 12 rotate along their respective blade axes.

[0074] The windmill blades 12 are blades that directly bear the wind; after the windmill blades 12 bear the wind, they can convert the wind force into the rotational force of the main shaft 11 through the mounting frame 13. The main shafts 11 of the multi-layer windmill main body 10 can be shared by one, or each layer of the windmill main body 10 can have one main shaft 11, and the multiple main shafts 11 of the multi-layer windmill main body 10 can be connected. Alternatively, two or three layers of windmill main bodies 10 can share one main shaft 11, which is not limited in this application. The following is an example of a single main shaft 11 for one layer of windmill main body 10 and multiple main shafts 11 for multiple layers of windmill main bodies 10 connected sequentially from top to bottom:

[0075] Each windmill blade 12 is arranged vertically. The mounting frame 13 includes connecting rods 131 and support rods 132. The number of connecting rods 131 corresponds to the number of windmill blades 12. One end of each connecting rod 131 is rotatably connected to the lower end of the blade shaft 121 of a windmill blade 12, and the other end is fixed to the main shaft 11. The windmill blades 12 are configured so that when affected by wind, the main shaft 11 rotates via the connecting rod 131, and the windmill blades 12 rotate along the vertical blade shaft 121. The two ends of each support rod 132 are connected to the middle of two adjacent connecting rods 131, respectively, to enhance the strength of the mounting frame 13.

[0076] The windmill blades 12 of the windmill body 10 can both rotate on their own and revolve synchronously with the main shaft 11. On the one hand, electricity is generated by a generator connected to the main shaft 11; on the other hand, while the windmill blades 12 rotate synchronously with the main shaft 11, the windmill blades 12 also rotate on their own, which can increase the wind exposure time of the windmill blades 12 during the rotation process, thereby improving the power generation efficiency.

[0077] Figure 3 This is a schematic diagram of the installation structure of the transmission mechanism 14 in the vertical windmill provided in the embodiment of the present application. Figure 3 The transmission mechanism 14 includes a main gear 141 and multiple transmission assemblies 142. The main gear 141 is rotatably mounted on the main shaft 11. A transmission assembly 142 is connected to the main gear 141 and a vertically mounted windmill blade 12. The transmission assembly 142 is configured such that when the main shaft 11 rotates, one end of the transmission assembly 142 rolls on the main gear 141, thereby causing the corresponding windmill blade 12 to rotate.

[0078] Through the cooperation of the main shaft 11, the main gear 141 and the transmission assembly 142, the position of the main gear 141 is not affected when the windmill blades 12 and the main shaft 11 rotate synchronously, thereby cooperating with the transmission assembly 142 to enable each windmill blade 12 to rotate around the vertical blade shaft 121.

[0079] Please continue reading Figure 3 The main gear 141 is a first conical tooth, and the transmission assembly 142 includes a second conical tooth 143, a transmission rod 144, a third conical tooth 145 and a fourth conical tooth 146. The second conical tooth 143 is engaged with the first conical tooth, and the axis of the first conical tooth is perpendicular to the axis of the second conical tooth 143; the extension direction of the transmission rod 144 is consistent with the extension direction of the connecting rod 131, and the two ends of the transmission rod 144 are respectively fixed to the second conical tooth 143 and the third conical tooth 145, so that the three rotate synchronously; the fourth conical tooth 146 is fixed to the lower end of the blade shaft 121 of the windmill blade 12, so that the two rotate synchronously, and the fourth conical tooth 146 is engaged with the third conical tooth 145.

[0080] Please continue reading Figure 3 Two connecting holes are provided below the connecting rod 131, and the transmission rod 144 passes through the two connecting holes in sequence, and the transmission rod 144 can rotate in the connecting holes. When the connecting rod 131 rotates around the axis of the main shaft 11, the transmission rod 144 and the second conical teeth 143 and the third conical teeth 145 connected to the transmission rod 144 rotate synchronously around the axis of the main shaft 11.

[0081] Figure 4 For a schematic diagram of the positions of multiple windmill blades 12 in a vertical windmill according to an embodiment of the present application, please refer to Figure 4In each layer of the windmill body 10, the number of windmill blades 12 can be two, four or six. Figure 4 The number of windmill blades 12 is four for illustration: the positions of the four windmill blades 12 are as follows: Figure 4 As shown, the surfaces where the two windmill blades 12 are located are perpendicular; or the extended surfaces where the two windmill blades 12 are located are perpendicular.

[0082] Figure 4 The direction indicated by the arrow is the wind direction. At position A, the angle between the wind blade 12 and the wind direction is 45°, meaning half of the blade is exposed to the wind. At position B, the angle between the wind blade 12 and the wind direction is 90°, meaning almost all of the blade is exposed to the wind. At position C, the angle between the wind blade 12 and the wind direction is 45°, meaning half of the blade is exposed to the wind. At position D, the angle between the wind blade 12 and the wind direction is 0°, meaning no wind is exposed. This arrangement of four blades ensures that their rotation is largely unaffected by adjacent blades and maximizes the total windward surface area of ​​the four blades 12, thereby increasing power generation efficiency.

[0083] Since the windmill blades 12 and the main shaft 11 can rotate synchronously, at this time, the windmill blades 12 revolve around the axis of the main shaft 11; the windmill blades 12 are also provided with a blade shaft 121, and the windmill blades 12 can also rotate around the axis of the blade shaft 121. Therefore, the angle between the windmill blades 12 rotated to position A and the wind direction can always be 45° (that is, when the windmill blades 12 revolve 360°, the windmill blades 12 rotate 180°), thereby making the power generation efficiency of the entire vertical windmill higher.

[0084] In order to achieve 180° rotation of the windmill blade 12 when the windmill blade 12 revolves 360°, the tooth ratio of the first conical teeth to the fourth conical teeth 146 is 1:2, and the number of teeth of the first conical teeth, the second conical teeth 143, the third conical teeth 145 and the fourth conical teeth 146 are all multiples of 4 for transmission.

[0085] Optionally, the ratio of the number of teeth of the first conical teeth to the second conical teeth 143 is 1.5:1, the number of teeth of the second conical teeth 143 and the third conical teeth 145 is the same, and the ratio of the number of teeth of the third conical teeth 145 to the fourth conical teeth 146 is 1:3. For example, the first conical teeth have 24 teeth, the second conical teeth 143 have 16 teeth, the third conical teeth 145 have 16 teeth, and the fourth conical teeth 146 have 48 teeth.

[0086] In another embodiment, the gear ratios of the first, second, and third conical teeth 143, 145 are 1:1:1, respectively, and the gear ratio of the third and fourth conical teeth 145 and 146 is 1:2. For example, the first, second, and third conical teeth 143, 145 each have 24 teeth, and the fourth conical teeth 146 have 48 teeth; or the first, second, and third conical teeth 143, 145 each have 20 teeth, and the fourth conical teeth 146 have 40 teeth.

[0087] In an actual environment, the wind direction may change. In order to ensure that the windmill blade 12 at position A always maintains a fixed angle with the wind direction, the present application also provides a wind-directing mechanism 15, a wind direction sensor, a position sensor and a controller. The wind direction sensor, the position sensor, the wind-directing mechanism 15 and the controller are electrically connected. After the wind direction sensor detects the wind direction, it transmits a first signal to the controller. After the position sensor detects the position of the windmill blade 12 at position A, it transmits a second signal to the controller. Based on the first signal and the second signal, the controller calculates the angle between the windmill blade 12 at position A and the wind direction. If the angle is a preset angle, there is no need to adjust the angle of the windmill blade 12; if the angle is not the preset angle, the control signal is transmitted to the wind-directing mechanism 15 to adjust the angle of the windmill blade 12 so that the angle between the windmill blade 12 at position A and the wind direction is the preset angle.

[0088] Figure 5 This is a schematic diagram of the installation structure of the wind-directing mechanism 15 in the vertical windmill provided in the embodiment of the present application. Figure 4 and Figure 5 The wind-facing mechanism 15 drives and connects to the main gear 141. The wind-facing mechanism 15 is configured as follows: the wind-facing mechanism 15 drives the main gear 141 to rotate around the main shaft 11, so as to cause the corresponding windmill blade 12 to rotate through the transmission assembly 142, thereby adjusting the angle between the windmill blade 12 and the wind direction. The main gear 141 (for example, the first conical gear) can control the rotation of the blade shaft 121 of the windmill blade 12. The wind-facing mechanism 15 can also control the transmission of the main gear 141 to cooperate with the transmission assembly 142 to adjust the angle between the windmill blade 12 and the wind direction, thereby achieving the wind-facing of the windmill blade 12. The main gear 141 and transmission assembly 142 are shared by power generation and wind-facing, which can make the structure of the vertical windmill relatively simple.

[0089] Please continue reading Figure 4 and Figure 5 The wind-facing mechanism 15 includes a sleeve 151 and a wind-facing drive assembly 152. The sleeve 151 is rotatably mounted on the main shaft 11 and is fixedly connected to the main gear 141. The wind-facing drive assembly 152 drives the sleeve 151 to rotate, thereby synchronously rotating the main gear 141. The rotation of the main shaft 11 and the main gear 141 can be controlled separately to achieve wind-facing and power generation.

[0090] Please continue reading Figure 4 and Figure 5 The wind driving assembly 152 includes a sprocket 1521, a chain 1522, and a driving member 1523. The sprocket 1521 is fixed to the outside of the sleeve 151, and the chain 1522 is engaged with the sprocket 1521. The driving member 1523 drives the connecting chain 1522 to rotate the sleeve 151 and the sprocket 1521 synchronously. The arrangement of the sleeve 151 and the sprocket 1521 can be used to drive the main gear 141 to rotate, thereby directing the wind turbine blades 12 to the wind. Optionally, a controller is electrically connected to the driving member 1523 to control the driving member 1523 to start or stop working. The driving member 1523 can be a motor, a reducer, etc., which is not limited in this application.

[0091] Please continue reading Figure 5 The vertical windmill also includes a bracket. The sleeve 151 includes an upper sleeve 1511 and a lower sleeve 1512. The upper sleeve 1511 and the lower sleeve 1512 are both rotatably mounted on the main shaft 11. The sprocket 1521 is fixed to the upper sleeve 1511, and the lower sleeve 1512 is fixed to the bracket. On the one hand, the lower sleeve 1512 can be fixed to support the main body of the vertical windmill, making the vertical windmill structure more stable; on the other hand, it facilitates the wind direction of the windmill blades 12.

[0092] Figure 6 This is a schematic diagram of a first installation structure of the bearing assembly 16 and the sleeve 151 in the vertical windmill provided in an embodiment of the present application. Figure 7 For a schematic diagram of a second installation structure of a bearing assembly and a sleeve in a vertical windmill provided in an embodiment of the present application, please refer to Figure 5-Figure 7 A bearing assembly 16 is disposed between the sleeve 151 and the main shaft 11. This assembly includes, from top to bottom, a first roller bearing 161, a first thrust bearing 162, a second roller bearing 163, and a second thrust bearing 164, as well as a first pressure block 165 and a second pressure block 166. The first roller bearing 161 and the first thrust bearing 162 are located between the upper sleeve 1511 and the main shaft 11. The first pressure block 165 is disposed between the first thrust bearing 162 and the main shaft 11. The second roller bearing 163 and the second thrust bearing 164 are located between the lower sleeve 1512 and the main shaft 11. The second pressure block 166 is disposed between the lower sleeve 1512 and the second thrust bearing 164. The outer wall of the main shaft 11 is provided with a step, which, from top to bottom, is pressed against the inner ring of the first roller bearing 161, the first pressure block 165, the inner ring of the second roller bearing 163, and the upper ring of the second thrust bearing 164.

[0093] By setting the bearing assembly 16, the rotation speed of the main shaft 11 will not be affected by the sleeve 151, so that the power generation of the generator connected to the main shaft 11 is higher; on the other hand, the relative rotation between the main shaft 11 and the upper sleeve 1511 can be achieved, and the rotation of the two will not be affected by each other, so that the wind and power generation will not be affected by each other.

[0094] Please continue reading Figure 6 and Figure 7 The first roller bearing 161 is also provided with a bearing pressure block 167, which includes an inner ring block 1671 and an outer ring block 1672. The inner ring block 1671 is arranged in a contact sleeve outside the main shaft 11, and the outer ring block 1672 is arranged outside the inner ring block 1671. Both the outer ring block 1672 and the inner ring block are arranged on the first roller bearing 161. The structure of the inner ring block 1671 is adapted to the shape of the step on the main shaft 11, so that the force on the main shaft 11 is more easily transmitted, and the main shaft 11 is prevented from slipping during rotation, so that the rotation of the main shaft 11 is smoother.

[0095] In the present application, when the main shaft 11 rotates, the inner ring block 1671 under the main shaft 11, the inner ring of the first roller bearing 161, the first pressure block 165, the inner ring of the second roller bearing 163 and the upper ring of the second plane bearing rotate synchronously; when the chain 1522 drives the sprocket 1521 to rotate, the upper sleeve 1511, the upper ring of the first plane bearing, the outer ring of the first roller bearing 161 and the first conical tooth rotate synchronously.

[0096] Please continue reading Figure 2 In the present application, a generator tooth 17 is further provided below the main shaft 11. The generator tooth 17 meshes with a generator mechanism 18, so that the main shaft 11 rotates while the generator tooth 17 rotates. The generator tooth 17 rotates while the generator mechanism 18 generates electricity. Optionally, the generator mechanism 18 is a generator.

[0097] The power generation principle of the vertical windmill provided in the embodiment of the present application is: the wind blows onto the windmill blades 12 (the wind direction forms an angle greater than 0° and less than 90° with one of the blades of the vertical windmill), and the windmill blades 12 are subjected to the wind force, so that the windmill blades 12, the connecting rod 131 set on the windmill blades 12, and the main shaft 11 fixed on the connecting rod 131 rotate synchronously around the axis of the main shaft 11, and the transmission rod 144 and the second conical teeth 143 and the third conical teeth 145 connected to the transmission rod 144 rotate synchronously around the axis of the main shaft 11. At this time, the main gear 141 (first conical tooth) mounted on the outer surface of the main shaft 11 does not rotate. The second conical tooth 143 on the transmission rod 144 slides on the first conical tooth, causing the second conical tooth 143 to rotate. The transmission rod 144 connected to the second conical tooth 143 and the third conical tooth 145 rotate synchronously around the axis of the transmission rod 144, thereby causing the fourth conical tooth 146 meshing with the third conical tooth 145 to rotate. The fourth conical tooth 146 is fixed to the lower end of the blade shaft 121 of the windmill blade 12, causing the blade shaft 121 to rotate synchronously, thereby achieving the orbital revolution of multiple windmill blades 12 around the axis of the main shaft 11 and the rotation of each windmill blade 12 around the axis of the blade shaft 121. When the windmill blade 12 orbits 360°, the windmill blade 12 rotates 180°. As the main shaft 11 rotates, the generator tooth 17 is driven to rotate. As the generator tooth 17 rotates, the generator mechanism 18 generates electricity.

[0098] The wind-facing principle of the vertical windmill provided in the embodiment of the present application is as follows: when the windmill blade 12 needs to be faced to the wind, the driving member 1523 is started to rotate the chain 1522, and the chain 1522 drives the sprocket 1521 to rotate, and the upper sleeve 1511 mounted on the sprocket 1521 rotates synchronously, and the main gear 141 (first conical teeth) fixed to the upper sleeve 1511 rotates, and the second conical teeth 143, the rotating rod and the third conical teeth 145 engaged with the main gear 141 (first conical teeth) rotate synchronously, thereby rotating the fourth conical teeth 146 engaged with the third conical teeth 145, and rotating the fourth conical teeth 146 fixed to the lower end of the blade shaft 121 of the windmill blade 12, so that the blade shaft 121 rotates synchronously, thereby adjusting the angle between the windmill blade 12 and the wind direction for facing the wind.

[0099] From the above content, it can be seen that the core of the vertical windmill is to carry wind through the windmill blades 12, utilize wind energy and drive the main shaft 11 to rotate, thereby generating electricity. Therefore, the structure of the windmill blades 12 is more important to the utilization rate of wind. The structure of the windmill blades 12 is described in detail below.

[0100] Figure 8 For a first structural diagram of the wind turbine blade 12 in the vertical wind turbine provided in the embodiment of the present application, please refer to Figure 8The windmill blade 12 includes a flat blade body 122 and a spoiler 123. The two surfaces of the blade body 122 are flat. The blade body 122 has a first edge 122a and a second edge 122b located on opposite sides of the blade shaft 121. The blade body 122 is arranged vertically. A blade shaft 121 is provided on the blade body 122. After the blade shaft 121 is installed on the mounting frame 13, the windmill blade 12 can rotate around the blade shaft 121.

[0101] In this application, the structure that mainly and directly bears the wind is the flat blade body 122, which can make the planar structure of the blade body 122 carry the wind, so that the force carried by the blade body 122 is larger, and the wind carried on the blade body 122 is also more uniform, so that the main shaft 11 connected to the blade body 122 can rotate to increase the utilization rate of the wind, thereby generating electricity.

[0102] See also Figure 8 One side of the spoiler 123 is located on the first edge 122a of the blade body 122, while the other side of the spoiler 123 protrudes from the surface of the blade body 122 (the surface of the spoiler 123 is not coplanar with the surface of the blade body 122). The provision of the spoiler 123 prevents wind blowing onto the blade body 122 from slipping off the blade edge, increasing the time the wind stays on the blade, thereby improving wind utilization. Simultaneously, the increased thrust at the blade edge acts as a lever for the resistance-type power generation vertical windmill, increasing the force exerted on the blade shaft 121 to rotate, thereby improving the power generation efficiency of the vertical windmill. Furthermore, the spoiler 123 is located on one side of the blade shaft 121, further extending the time the wind stays on the windmill blade 12 during its rotation. The wind pressure causes the blade shaft 121 to rotate, and the spoiler 123 on the windmill blade 12 is subjected to a greater wind force, acting as a lever, increasing the force exerted on the blade shaft 121 to rotate, and also increasing the rotational force of the main shaft 11, thereby further facilitating power generation.

[0103] Please continue reading Figure 8 When the windmill blades 12 are installed on the bracket, the blade shaft 121 is set vertically, and the windmill blades 12 on both sides of the blade shaft 121 are symmetrically arranged along the axis of the blade shaft 121. When the windmill blades 12 rotate around the blade shaft 121, the force they receive is more uniform.

[0104] Figure 9 For a second structural diagram of the wind turbine blade 12 in the vertical wind turbine provided in the embodiment of the present application, please refer to Figure 9Both the first edge 122a and the second edge 122b are provided with spoilers 123. This can block wind on both sides of the blade body 122, further increasing the time and amount of wind carried on the blade, increasing the force exerted by the rotation of the blade shaft 121, and thereby improving wind utilization. Simultaneously, when the windmill blade 12 rotates about the blade shaft 121, spoilers 123 are provided on opposite sides of the blade shaft 121. As the windmill blade 12 rotates about the blade shaft 121, the wind blocked by the spoilers 123 increases the time the wind is carried as the windmill blade 12 rotates, increasing the leverage force on the windmill blade 12, thereby improving wind utilization.

[0105] Optionally, the spoilers 123 provided on the first edge 122a and the second edge 122b of the blade body 122 are symmetrically arranged along the axis of the blade shaft 121, which can further make the windmill blade 12 more evenly stressed during rotation and improve power generation efficiency.

[0106] Figure 10 For a third structural diagram of the wind turbine blade 12 in the vertical wind turbine provided in the embodiment of the present application, please refer to Figure 10 The blade body 122 further has a third edge 122c and a fourth edge 122d through which the blade shaft 121 passes. The first edge 122a, the second edge 122b, the third edge 122c, and the fourth edge 122d are each provided with a spoiler 123. The spoilers 123 provided circumferentially on the blade body 122 can block wind to prevent it from quickly sliding away from the blade body 122. At the same time, the thrust at the edge of the blade body 122 is increased, thereby improving wind utilization.

[0107] Please continue reading Figures 8-10 The spoiler 123 is flat and inclined and protrudes from the plane of the blade body 122. When wind blows onto the blade body 122, the inclined spoiler 123 can prevent the wind from sliding away from the edge of the blade to a certain extent. At the same time, it increases the thrust at the edge of the blade body 122, thereby improving the utilization rate of the wind. The structure of the blade is also relatively simple.

[0108] Figure 11 For a first cross-sectional view of a wind turbine blade 12 in a vertical wind turbine according to an embodiment of the present application, please refer to Figure 11 The angle α between the surface of the spoiler 123 and the surface of the blade body 122 is 15°-60°. This can increase the amount and time that wind stays on the blade, increasing the force acting on the blade shaft 121 to rotate. It can also achieve a better wind blocking effect even when the spoiler 123 is narrow. It can also prevent excessive wind accumulation at the spoiler 123, preventing uneven force on the windmill blade 12 from causing damage.

[0109] Please continue reading Figure 11 The angle α between the surface where the spoiler 123 is located and the surface where the blade body 122 is located is 30°-45°. By way of example, the angle α between the surface where the spoiler 123 is located and the surface where the blade body 122 is located is 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, or 60°. In other embodiments, the angle α between the surface where the spoiler 123 is located and the surface where the blade body 122 is located can also be 10°, 65°, 70°, etc.

[0110] Figure 12 A fourth structural schematic diagram of the windmill blade 12 in the vertical windmill provided in an embodiment of the present application; Figure 13 A fifth structural diagram of the windmill blade 12 in the vertical windmill provided in an embodiment of the present application; Figure 14 For a sixth structural diagram of the wind turbine blade 12 in the vertical wind turbine provided in the embodiment of the present application, please refer to Figure 12-14 The spoiler 123 is arc-shaped, and there is a smooth transition between the blade body 122 and the spoiler 123. Because the spoiler 123 is arc-shaped, the wind follows an arc-shaped trajectory when it slides along the edge of the blade. This allows the wind to act on the edge of the blade for a longer time, further increasing the force exerted on the rotation of the blade shaft 121, thereby improving the utilization rate of the wind when the spoiler 123 is narrow.

[0111] Figure 15 For the second cross-sectional view of the wind turbine blade 12 in the vertical wind turbine provided in the embodiment of the present application, please refer to Figure 15 The arcuate surface of spoiler 123 is tangent to the surface of blade body 122, and the arc R of spoiler 123 is π / 6-π / 4 rad. This increases the amount and duration of wind staying on the blade; wind at the blade edge slides along the arcuate surface, achieving a better wind blocking effect even when spoiler 123 is narrow. It also prevents excessive wind accumulation at spoiler 123, preventing uneven force on windmill blades 12 from causing damage.

[0112] In other embodiments, the spoiler 123 may not be in a standard flat or arc shape, but may have a certain degree of bending, or multiple curved surfaces, etc., which is not limited in this application.

[0113] Please continue reading Figure 12-14 In order to increase the strength of the blade body 122 , reinforcing ribs are also provided on the blade body 122 to prevent the windmill blade 12 from being damaged.

[0114] Please continue reading Figure 11 and Figure 15The width D1 of the blade body 122 is the distance between the two sides of the blade body 122 in the horizontal direction (the distance between the two sides of the blade body 122 along the direction from the first edge 122a to the second edge 122b). The width D2 of the spoiler 123 is the distance between the two sides of the spoiler 123 in the horizontal direction (the distance between the two sides of the spoiler 123 along the direction from the first edge 122a to the second edge 122b). The width D2 of the spoiler 123 is 0.005-0.1 times the width D1 of the blade body 122. A spoiler 123 of this width can block flow while being narrow, thereby avoiding a significant increase in the weight of the windmill blade 12.

[0115] See also Figure 10 and Figure 15 , spoilers 123 are protruding from both surfaces of the blade body 122. Since the windmill blade 12 can both revolve around the axis of the main shaft 11 and rotate around the axis of the blade shaft 121, the spoilers 123 are protruding from both surfaces of the blade body 122. When the windmill blade 12 rotates, any surface of the blade body 122 is exposed to wind, which can improve wind utilization and thus improve power generation efficiency.

[0116] Figure 16 A third cross-sectional view of the windmill blade 12 in the vertical windmill provided in an embodiment of the present application; Figure 17 A fourth cross-sectional view of the windmill blade 12 in the vertical windmill provided in an embodiment of the present application; Figure 18 For the fifth cross-sectional view of the wind turbine blade 12 in the vertical wind turbine provided in the embodiment of the present application, please refer to Figure 16-18 , along the axial direction perpendicular to the blade shaft 121, the cross-section of the windmill blade 12 is S-shaped, X-shaped or Y-shaped. When any surface of the blade body 122 is exposed to wind, the utilization rate of the wind can be improved by setting the spoiler 123. If the cross-section of the blade body 122 is S-shaped or X-shaped, when the windmill blade 12 rotates around the blade shaft 121, the spoilers 123 are set on the opposite sides of the blade shaft 121 and are distributed symmetrically along the blade shaft 121. When the windmill blade 12 rotates around the blade shaft 121, the wind blocked by the spoiler 123 will increase the load time as the windmill blade 12 rotates, increase the force of the rotation of the blade shaft 121, and thus improve the utilization rate of the wind.

[0117] Please continue reading Figure 2 In order to prevent the connecting rod 131 from being deformed, the mounting frame 13 may further include a pull rod 133, which is arranged between the connecting rod 131 and the main shaft 11. The two ends of the pull rod 133 are respectively fixed to the main shaft 11 and the connecting rod 131. In order to prevent the setting of the pull rod 133 from affecting the rotation of the windmill blade 12, please continue to refer to Figure 11-13The blade body 122 includes a square plate 1221 and a trapezoidal plate 1222 connected to each other (they can be formed as a single piece or as two connected plates), and the blade shaft 121 passes through the square plate 1221 and the trapezoidal plate 1222. In other words, the blade body 122 has a structure that is wide at the top and narrow at the bottom. This ensures that the rotation of the windmill blade 12 is not affected by the pull rod 133, facilitating the installation of the windmill blade 12. It also provides a larger wind-receiving area and better stability during rotation.

[0118] Optionally, the square plate 1221 has a first edge 122a, a second edge 122b, and an uppermost third edge 122c, and the trapezoidal plate 1222 has a lowermost fourth edge 122d. The trapezoidal plate 1222 further has a first inclined edge 122e connecting the fourth edge 122d and the first edge 122a, and a second inclined edge 122f connecting the fourth edge 122d and the second edge 122b. A spoiler 123 protruding from both surfaces may be provided on the first edge 122a, the second edge 122b, and the third edge 122c of the square plate 1221 of the blade body 122. The fourth edge 122d, the first inclined edge 122e, and the second inclined edge 122f of the trapezoidal plate 1222 may also be provided with a spoiler 123 protruding from both surfaces.

[0119] In other embodiments, spoilers 123 protruding from both surfaces may be provided on a portion of the edge of the blade body 122. For example, along an axis perpendicular to the blade shaft 121, the cross-section of the portion formed by the square plate 1221 and the spoilers 123 connected thereto may be S-shaped, X-shaped, or Y-shaped. The square plate 1221 is the main portion that bears the wind, and the provision of spoilers 123 on the square plate 1221 can reduce the weight of the windmill blade 12 while increasing wind utilization efficiency.

[0120] In other embodiments, the shape of the blade body 122 may also be rectangular, elliptical, or circular, etc., which is not limited in this application.

[0121] Please continue reading Figure 14 The windmill blade 12 provided in the embodiment of the present application includes a blade shaft 121, a flat blade body 122 and a spoiler 123. The blade body 122 includes a square plate 1221 located on the upper side and a trapezoidal plate 1222 located on the lower side. The blade shaft 121 passes through the square plate 1221 and the trapezoidal plate 1222. The blade body 122 is symmetrical with respect to the blade shaft 121. The spoiler 123 is protruding from both surfaces of the first edge 122a, the second edge 122b and the third edge 122c of the square plate 1221. The spoiler 123 is protruding from both surfaces of the fourth edge 122d, the first inclined edge 122e and the second inclined edge 122f of the trapezoidal plate 1222.

[0122] Please continue reading Figure 2-Figure 3 、 Figure 5-Figure 7 and Figure 14The vertical windmill provided in the embodiment of the present application includes a main shaft 11, four windmill blades 12, a mounting frame 13, a main gear 141 (first conical gear), four transmission assemblies 142, a wind-directing mechanism 15, a bearing assembly 16, a power generation gear 17, and a power generation mechanism 18. The windmill blade 12 includes a blade shaft 121, a flat blade body 122, and a spoiler 123. The blade body 122 includes a square plate 1221 located on the upper side and a trapezoidal plate 1222 located on the lower side. The blade shaft 121 passes through the square plate 1221 and the trapezoidal plate 1222. The blade body 122 is symmetrical with respect to the blade shaft 121. The spoiler 123 is protruding from both surfaces of the first edge 122a, the second edge 122b, and the third edge 122c of the square plate 1221. The spoiler 123 is protruding from both surfaces of the fourth edge 122d, the first inclined edge 122e, and the second inclined edge 122f of the trapezoidal plate 1222. The mounting frame 13 is fixed to the main shaft 11. The blade shafts 121 of the four windmill blades 12 are all rotatably mounted on the mounting frame 13, and the four windmill blades 12 are spaced apart around the main shaft 11. One transmission assembly 142 drives each windmill blade 12. The transmission assembly 142 includes a second conical tooth 143, a transmission rod 144, a third conical tooth 145, and a fourth conical tooth 146. The second conical tooth 143 meshes with the first conical tooth, and the axis of the first conical tooth is perpendicular to the axis of the second conical tooth 143. The two ends of the transmission rod 144 respectively fix the second conical tooth 143 and the third conical tooth 145 so that the three rotate synchronously. The fourth conical tooth 146 is fixed to the lower end of the blade shaft 121 of the windmill blade 12 so that the two rotate synchronously. The fourth conical tooth 146 meshes with the third conical tooth 145. The wind-control mechanism 15 includes a sleeve 151, a sprocket 1521, a chain 1522 and a driving member 1523. The sleeve 151 is rotatably arranged outside the main shaft 11, the sprocket 1521 is fixed outside the sleeve 151, the chain 1522 is engaged with the sprocket 1521, and the driving member 1523 drives the chain 1522 to move, thereby rotating the sprocket 1521, so that the sleeve 151 and the first conical tooth fixed on the sleeve 151 rotate synchronously. The rotation of the first conical tooth and the main shaft 11 are not affected by each other. A bearing assembly 16 is arranged between the sleeve 151 and the main shaft 11. The bearing assembly 16 includes a first roller bearing 161, a first thrust bearing 162, a second roller bearing 163 and a second thrust bearing 164, as well as a first pressure block 165 and a second pressure block 166 arranged from top to bottom. The first roller bearing 161 and the first thrust bearing 162 are located between the upper sleeve 1511 and the main shaft 11, the first pressure block 165 is arranged between the first thrust bearing 162 and the main shaft 11, the second roller bearing 163 and the second thrust bearing 164 are located between the lower sleeve 1512 and the main shaft 11, and the second pressure block 166 is arranged between the lower sleeve 1512 and the second thrust bearing 164.The outer wall of the main shaft 11 is provided with steps, which are pressed on the inner ring of the first roller bearing 161, the first pressure block 165, the inner ring of the second roller bearing 163 and the upper ring of the second thrust bearing 164 in sequence from top to bottom.

[0123] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A windmill blade for a vertical windmill, characterized in that: include: A flat blade body, wherein two surfaces of the blade body are plane, the blade body has a blade axis, the blade body has a first edge and a second edge located on opposite sides of the blade axis, and a third edge and a fourth edge through which the blade axis passes; A spoiler, wherein the first edge, the second edge, the third edge and the fourth edge are all provided with the spoiler, and the other side of the spoiler protrudes from the surface of the blade body; Along the direction from the first edge to the second edge, the width of the spoiler is 0.005-0.1 times the width of the blade body.

2. The windmill blade according to claim 1, characterized in that: The spoiler is in the shape of a flat plate, and is arranged obliquely and protrudes from the plane of the blade body.

3. The windmill blade according to claim 2, characterized in that: The angle between the surface where the spoiler is located and the surface where the blade body is located is 15°-60°.

4. The blade according to claim 2, characterized in that The angle between the surface where the spoiler is located and the surface where the blade body is located is 30°-45°.

5. The windmill blade according to claim 1, characterized in that: The spoiler is in an arc shape, and the blade body and the spoiler have a smooth transition.

6. The windmill blade according to claim 5, characterized in that: The arc surface of the spoiler is tangent to the surface of the blade body, and the arc of the spoiler is π / 6-π / 4rad.

7. The windmill blade according to any one of claims 1 to 6, characterized in that: The spoilers are protrudingly provided on both surfaces of the blade body.

8. The windmill blade according to claim 7, characterized in that: Along the axial direction perpendicular to the blade shaft, the cross section of the windmill blade is S-shaped, X-shaped or Y-shaped.

9. The windmill blade according to claim 8, characterized in that: The blade body includes a square plate and a trapezoidal plate connected to each other, and the blade shaft passes through the square plate and the trapezoidal plate.

10. A vertical windmill, characterized in that: The windmill comprises a main shaft, a plurality of windmill blades according to any one of claims 1 to 9, and a mounting frame, wherein each windmill blade is arranged vertically, the mounting frame is fixed to the main shaft, the plurality of windmill blades are rotatably mounted on the mounting frame, and the plurality of windmill blades are spaced apart around the main shaft; The windmill blades are configured such that: when affected by wind, the main shaft is driven to rotate via the mounting frame, and the windmill blades rotate along the vertical blade shaft.

11. The vertical windmill according to claim 10, characterized in that: The vertical windmill further includes a transmission mechanism, which includes a main gear and a plurality of transmission components. The main gear is rotatably sleeved outside the main shaft, and one of the transmission components is respectively connected to the main gear and one of the vertically arranged windmill blades. The transmission assembly is configured such that when the main shaft rotates, one end of the transmission assembly rolls on the main gear, so as to cause the corresponding windmill blade to rotate through the transmission assembly.

12. The vertical windmill according to claim 11, characterized in that: The main gear is a first conical tooth, and the transmission assembly includes a second conical tooth, a transmission rod, a third conical tooth and a fourth conical tooth. The second conical tooth is engaged with the first conical tooth, and the axis of the first conical tooth is perpendicular to the axis of the second conical tooth; the two ends of the transmission rod are respectively fixed with the second conical tooth and the third conical tooth so that the three rotate synchronously; the fourth conical tooth is fixed to the lower end of the blade shaft of the windmill blade so that the two rotate synchronously, and the fourth conical tooth is engaged with the third conical tooth.

13. The vertical windmill according to claim 11 or 12, characterized in that: The vertical windmill also includes a wind-facing mechanism, which is driven and connected to the main gear. The wind-facing mechanism is configured as follows: the wind-facing mechanism drives the main gear to rotate around the main shaft, so as to cause the corresponding windmill blades to rotate through the transmission assembly, thereby adjusting the angle between the blade body and the wind direction.

14. The vertical windmill according to claim 13, characterized in that: The wind-facing mechanism includes a sleeve and a wind-facing drive assembly. The sleeve is rotatably sleeved outside the main shaft. The sleeve is fixedly connected to the main gear. The wind-facing drive assembly drives the sleeve to rotate so that the main gear rotates synchronously.

15. The vertical windmill according to claim 14, characterized in that: The wind driving assembly includes a sprocket, a chain and a driving member. The sprocket is fixed outside the sleeve, the chain is engaged with the sprocket, and the driving member drives and connects the chain to make the sleeve and the sprocket rotate synchronously.

16. The vertical windmill according to claim 15, characterized in that: The vertical windmill further includes a bracket, the sleeve includes an upper sleeve and a lower sleeve, the upper sleeve and the lower sleeve are both rotatably sleeved outside the main shaft, the sprocket is fixed to the upper sleeve, and the lower sleeve is fixed to the bracket.

17. The vertical windmill according to claim 16, characterized in that: A bearing assembly is provided between the sleeve and the main shaft, and the bearing assembly includes a first roller bearing, a first thrust bearing, a second roller bearing, and a second thrust bearing, as well as a first pressing block and a second pressing block, which are arranged in sequence from top to bottom. The first roller bearing and the first thrust bearing are located between the upper sleeve and the main shaft, the first pressing block is arranged between the first thrust bearing and the main shaft, the second roller bearing and the second thrust bearing are located between the lower sleeve and the main shaft, and the second pressing block is arranged between the lower sleeve and the second thrust bearing. The outer wall of the main shaft is provided with a step, and from top to bottom, the step is pressed on the inner ring of the first roller bearing, the first pressure block, the inner ring of the second roller bearing and the upper ring of the second thrust bearing in sequence.

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