A wind power generation device

Abstract

This invention relates to the field of wind power generation technology. This application discloses a wind power generation device, including a connecting shaft II, which is movably sleeved on the outer surface of a housing. A reverse-rotating fan blade is fixedly installed at one end of the connecting shaft II on the outer side of the housing, and a first bevel gear is fixedly installed at the other end of the connecting shaft II on the inner cavity of the housing. The first bevel gear meshes with an adjusting gear disc. The torque generated by the reverse-rotating fan blade overcomes the elastic force of the return spring, driving the adjusting device to rotate, thereby driving the connecting shaft III to rotate along its own axis, and driving the mounting shaft to rotate. The deflection angle of the fan blade changes, thus enabling the automatic change of the fan blade deflection angle and reduction of the torque generated by the fan blade when the wind speed increases. This avoids the problem of excessive rotation speed of the device due to excessive wind speed, which could cause equipment damage, and improves the stability of the device during operation.

Description

[0001] This invention patent application is a divisional application. The original application number is 202411028918.7, the application date is July 30, 2024, and the invention title is "A Wind Power Generation Device". Technical Field

[0002] This application relates to the field of wind power generation technology, and more particularly to a wind power generation device. Background Technology

[0003] Wind power is the cleanest energy source in modern society and has a very broad range of applications. A traditional wind turbine consists of a support column, fan blades, main shaft, accelerator gear set, generator set, wind speed and direction detector, grid connection equipment, and control equipment. During the power generation process, the airflow acts on the fan blades to drive the main shaft to rotate, which in turn drives the generator set to generate electricity. The generated electricity is then transmitted to the power grid through the grid connection equipment. In addition, the wind speed and direction detector can detect wind speed and direction in real time and adjust the position of the generator set through the control equipment. This type of wind power generation device has the advantages of simple structure, convenient use, and low cost, and is currently the most widely used type.

[0004] Although existing wind power generation devices have many advantages, they still have certain limitations in actual use. When the wind speed increases, existing wind turbines cannot automatically change the skew angle of the blades in real time, nor can they reduce the torque of the blades. This can easily lead to wear and even damage to the equipment due to excessive wind speed and excessive speed of the device. Summary of the Invention

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: it includes a connecting steel sleeve, one end of which is fixedly connected to a windward front end, a stroke sleeve is fixedly installed inside the windward front end, an adjusting device is connected inside the stroke sleeve, the other end of which is fixedly connected to a connecting outer shaft, a power generation cavity is sleeved on the connecting outer shaft, one end of the adjusting device is fixedly installed with a transmission inner shaft, a driving device is installed at one end of the transmission inner shaft, a locking seat is fixedly installed inside the adjusting device, a connecting base is provided outside the adjusting device, and a rotating device is fixedly connected to the connecting base;

[0006] The drive device includes a housing, on which a reversing device is fitted. An adjusting motor is fixedly installed inside the housing, and an adjusting gear is fixedly installed on the output shaft of the adjusting motor. A wind-facing plate that is fixedly connected to the inner shaft of the transmission is fixedly installed on one side of the housing.

[0007] Preferably, the reversing device includes a connecting shaft II, which is movably connected to the housing. One end of the connecting shaft II is fixedly fitted with a reversing fan blade, and the other end of the connecting shaft II is fixedly fitted with a first bevel gear that meshes with the adjusting gear disc.

[0008] Preferably, the adjusting device includes a stroke shaft, which is movably installed inside a stroke sleeve. One end of the stroke shaft is provided with a return spring, one end of which is fixedly connected to the stroke sleeve. A locking transmission device is fixedly mounted on one end of the stroke shaft, and a locking disc is fixedly mounted on one end of the locking transmission device. One side of the locking disc is fixedly connected to the inner transmission shaft. The locking disc is provided with a protrusion for locking. The locking transmission device includes a connecting shaft I, and a transmission bevel gear and a locking bevel gear are respectively provided at both ends of the connecting shaft I.

[0009] Preferably, the rotating device includes a connecting shaft III, a second bevel gear is fixedly mounted at the bottom of the connecting shaft III, an mounting shaft is fixedly mounted at the top of the connecting shaft III, a fan blade is fixedly mounted at the top of the mounting shaft, and a bearing connecting seat fixedly connected to the connecting base is also sleeved on the mounting shaft. The second bevel gear is combined with a locking transmission device, and the tilting direction of the fan blade is opposite to the tilting direction of the reversing device.

[0010] Preferably, when the adjusting device is in the initial position, the locking bevel gear meshes with the second bevel gear, and the locking seat cooperates with the locking disc. When the adjusting device moves to the right, the transmission bevel gear meshes with the second bevel gear, and the locking seat disengages from the locking disc.

[0011] This application has the following beneficial effects:

[0012] 1. When the wind speed is high enough, the torque generated by the reverse fan blades overcomes the elasticity of the return spring, causing the entire adjustment device to rotate. Since the transmission bevel gear is meshing with the second bevel gear, it drives the connecting shaft III to rotate along its own axis, and also drives the mounting shaft to rotate. The deflection angle of the fan blades changes, thus enabling the automatic change of the deflection angle of the fan blades when the wind speed increases, and reducing the torque generated by the fan blades. This avoids the problem of the device rotating too fast due to excessive wind speed, which could cause equipment damage, and improves the stability of the device during operation.

[0013] 2. The device involved in this application adopts a coaxial design, and the actual wind speed borne by the reverse fan blade is the same as that borne by the fan blade, which ensures more precise adjustment, ensures that the device is in the best power generation efficiency and in the safest state, and improves the practicality of the device.

[0014] 3. The return spring can drive the adjusting device, the transmission inner shaft and the drive device to reset as a whole, so that the locking bevel gear and the second bevel gear are restored to the meshing state. At the same time, the locking disc and the locking seat are restored to the locking state, and the adjusting device as a whole cannot rotate. At this time, the locking bevel gear cannot rotate, and through the meshing action, it also prevents the second bevel gear from rotating, thus avoiding the fan blade from deflecting during normal operation of the device, and further improving the reliability of the device.

[0015] 4. In the equipment involved in this application, the gear for locking the second bevel gear and the gear for driving the second bevel gear to rotate are designed separately, namely the transmission bevel gear and the locking bevel gear, which avoids excessive wear of the gears, greatly improves the service life of the transmission bevel gear and the locking bevel gear, reduces the maintenance frequency of the device, and reduces the operating cost of the device.

[0016] 5. During the process of driving the adjusting gear disc to rotate, the adjusting motor can drive the first bevel gear to rotate, thereby adjusting the tilt angle of the reverse fan blade. This allows the torque generated by the reverse fan blade at the same wind speed to be adjusted, so that the first bevel gear can be adjusted according to the specific data of the fan blade. This enables the device to achieve targeted angle adjustment for fan blades of different specifications, thus expanding the applicability of the device. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the existing technical solutions, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a right view of the structure of the present invention;

[0020] Figure 3 The structure of this invention Figure 2 Cross-sectional view along direction A;

[0021] Figure 4 The structure of this invention Figure 3 Enlarged view at point B in the middle;

[0022] Figure 5 This is a schematic diagram of the main structure of the present invention;

[0023] Figure 6 This is a right view of the main structure of the present invention;

[0024] Figure 7 The structure of this invention Figure 6 Cross-sectional view along the C-direction;

[0025] Figure 8 This is a schematic diagram of the structural adjustment device of the present invention;

[0026] Figure 9 This is a right view of the structural adjustment device of the present invention;

[0027] Figure 10 The structure of this invention Figure 9 Cross-sectional view along the D direction;

[0028] Figure 11 This is a schematic diagram of the structural driving device of the present invention;

[0029] Figure 12 This is a right view of the structural driving device of the present invention;

[0030] Figure 13 The structure of this invention Figure 12 Cross-sectional view along the E direction;

[0031] Figure 14 This is a schematic diagram of the rotating device of the present invention;

[0032] Figure 15 The structure of this invention Figure 14 Cross-sectional view along the F direction.

[0033] In the diagram: 1. Connecting steel sleeve; 2. Front end facing the wind; 3. Adjusting device; 31. Stroke shaft; 32. Return spring; 33. Locking transmission device; 331. Connecting shaft I; 332a. Transmission bevel gear; 332b. Locking bevel gear; 34. Locking disc; 4. Stroke sleeve; 5. Connecting outer shaft; 6. Generating chamber; 7. Transmission inner shaft; 8. Drive device; 81. Housing; 82. Reversing device; 821. Connecting shaft II; 822. Reversing fan blade; 823. First bevel gear; 83. Adjusting motor; 84. Adjusting gear disc; 85. Front end; 9. Locking seat; 10. Connecting base; 11. Rotating device; 111. Connecting shaft III; 112. Second bevel gear; 113. Mounting shaft; 114. Fan blade; 115. Bearing connecting seat. Detailed Implementation

[0034] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0035] Please see Figure 1-7As shown in the figure, this embodiment provides a wind power generation device, including a connecting steel sleeve 1. The front end of the connecting steel sleeve 1 is fixedly installed with a windward front end 2 by bolts. The inner wall of the windward front end 2 is fixedly installed with a stroke sleeve 4 for connecting an adjustment device 3 near the front end. The end of the connecting steel sleeve 1 is fixedly installed with a connecting outer shaft 5 by bolts. The outer surface of the connecting outer shaft 5 is movably fitted with a power generation chamber 6 by bearings. The end of the adjustment device 3 is fixedly installed with a transmission inner shaft 7. The end of the transmission inner shaft 7 is fixedly installed with a drive device 8. The top and bottom of the inner wall of the adjustment device 3 are fixedly installed with locking seats 9 near the connecting outer shaft 5. The outer surface of the adjustment device 3 is provided with a connecting base 10 near the middle. The top of the connecting base 10 is fixedly connected with a rotating device 11 by bolts.

[0036] Please see Figure 3 The outer surface of the power generation cavity 6 is streamlined.

[0037] Further, please refer to Figure 10 The locking transmission device 33 includes a connecting shaft I 331, and a transmission bevel gear 332a and a locking bevel gear 332b are respectively provided at both ends of the connecting shaft I 331.

[0038] Further, please refer to Figures 8-10 The adjusting device 3 includes a stroke shaft 31, which is movably installed inside the stroke sleeve 4. A return spring 32 is fixedly installed at one end of the stroke shaft 31. The front end of the return spring 32 is fixedly connected to the open end of the inner cavity of the stroke sleeve 4. A locking transmission device 33 is fixedly installed at the end of the stroke shaft 31. A locking disc 34 is fixedly installed at one end of the locking transmission device 33. One side of the locking disc 34 is fixedly connected to the inner transmission shaft 7. The outer surface of the locking disc 34 is provided with protrusions.

[0039] Please see Figure 4 and Figure 8 The protrusions on the outer surface of the locking disc 34 engage with the locking seat 9 to lock the disc in place.

[0040] Further, please refer to Figure 3 and Figures 11-13 The drive device 8 includes a housing 81, a reversing device 82 is movably fitted on the outer surface of the housing 81, an adjusting motor 83 is fixedly installed at one end of the inner cavity of the housing 81, an adjusting gear 84 is fixedly installed at one end of the output shaft of the adjusting motor 83, a wind-facing plate 85 is fixedly installed at the front end of the outer surface of the housing 81, and one end of the transmission inner shaft 7 is fixedly connected to the wind-facing plate 85.

[0041] Further, please refer to Figure 13The reversing device 82 includes a connecting shaft II 821, which is movably sleeved on the outer surface of the housing 81. One end of the connecting shaft II 821 is fixedly installed with a reversing fan blade 822 at a position outside the housing 81, and the other end of the connecting shaft II 821 is fixedly installed with a first bevel gear 823 at a position inside the housing 81.

[0042] Please see Figure 13 The first bevel gear 823 meshes with the adjusting gear disc 84.

[0043] Further, please refer to Figure 5 , Figures 13-15 The rotating device 11 includes a connecting shaft III 111. A second bevel gear 112 is fixedly sleeved at the end of the connecting shaft III 111, and a mounting shaft 113 is fixedly sleeved at the top of the connecting shaft III 111. A fan blade 114 is fixedly mounted on the top of the mounting shaft 113. A bearing connecting seat 115 is movably sleeved on the connecting shaft III 111, and the bearing connecting seat 115 is fixedly connected to the connecting base 10 by bolts. In traditional equipment, other equipment is used to detect the wind speed, and then other control equipment and motors are used to adjust the deflection angle of the fan blades. This adjustment method has obvious lag, and the wind direction cannot always be directly facing the wind turbine, resulting in a difference between the actual measured wind speed and the actual wind speed on the fan blade surface, leading to inaccurate adjustment. However, the device involved in this application adopts a coaxial design, and the actual wind speed borne by the reversing fan blade 822 is the same as the actual wind speed borne by the fan blade 114, ensuring more accurate adjustment, ensuring that the device is in the best power generation efficiency and in the safest state, and improving the practicality of the device.

[0044] Please see Figure 3 , Figure 8 , Figure 10 and Figures 14-15 When the wind speed drops below the trigger threshold, the reset spring 32 can drive the adjustment device 3, the transmission inner shaft 7 and the drive device 8 to reset as a whole, so that the locking bevel gear 332b and the second bevel gear 112 are re-engaged. At the same time, the locking disc 34 and the locking seat 9 are re-engaged. The adjustment device 3 as a whole cannot rotate. At this time, the locking bevel gear 332b cannot rotate, and the second bevel gear 112 is also prevented from rotating through the meshing action, so as to avoid the fan blade 114 from deflecting during normal operation of the device, and further improve the reliability of the device.

[0045] Please see Figure 3 , Figure 8 and Figures 14-15 The end of the connecting shaft Ⅲ111 extends into the interior of the connecting steel sleeve 1, and the second bevel gear 112 is located inside the connecting steel sleeve 1 and is engaged with the locking transmission device 33.

[0046] Please see Figure 3 , Figure 10 , Figures 13-15 The tilt direction of the fan blade 114 is opposite to the tilt direction of the reversing device 82.

[0047] When the wind speed increases, due to the streamlined shape of the outer surface of the power generation cavity 6, the airflow will flow along the outer surface of the power generation cavity 6 and come into contact with the entire drive device 8, thereby pushing the entire drive device 8 to move to the right. Since the transmission inner shaft 7 connects the drive device 8 and the adjustment device 3, it drives the entire adjustment device 3 to move synchronously, causing the locking disc 34 to disengage from the locking seat 9. At the same time, the locking bevel gear 332b disengages from the first bevel gear 823 and is engaged with the transmission bevel gear 332a. At this time, because the tilt direction of the fan blade 114 is opposite to the tilt direction of the reversing device 82, the torque generated by the airflow on the reversing fan blade 822 is opposite to that of the fan blade 114. The torque generated is opposite. When the wind speed is high enough, the torque generated by the reverse fan blade 822 overcomes the elastic force of the return spring 32, causing the adjustment device 3 to rotate as a whole. Since the transmission bevel gear 332a is in mesh with the second bevel gear 112, it drives the connecting shaft Ⅲ 111 to rotate along its own axis, which in turn drives the mounting shaft 113 to rotate. The deflection angle of the fan blade 114 changes, thereby automatically changing the deflection angle of the fan blade 114 when the wind speed increases and reducing the torque generated by the fan blade 114. This avoids the problem of the device rotating too fast due to excessive wind speed, which could cause equipment damage, and improves the stability of the device during operation.

[0048] When the adjusting device 3 is in the initial position, the locking bevel gear 332b meshes with the second bevel gear 112, and the locking seat 9 cooperates with the locking disc 34. When the adjusting device 3 moves to the right, the transmission bevel gear 332a meshes with the second bevel gear 112, and the locking seat 9 disengages from the locking disc 34.

[0049] Specifically, please refer to Figure 3 , Figure 10 , Figures 13-15When the adjusting device 3 is in its initial position, the locking bevel gear 332b meshes with the second bevel gear 112, and the locking seat 9 engages with the locking disc 34. When the adjusting device 3 moves to the right, the transmission bevel gear 332a meshes with the second bevel gear 112, and the locking seat 9 disengages from the locking disc 34. In traditional equipment, there is one gear for locking and driving the adjusting fan blades. However, in actual use, the fan blades continuously generate rotational torque under the action of wind force, which acts on the gear responsible for locking and driving, resulting in a significant reduction in gear life. In the equipment involved in this application, the gear for locking the second bevel gear 112 and the gear for driving the second bevel gear 112 are designed separately as the transmission bevel gear 332a and the locking bevel gear 332b, respectively. This avoids excessive wear of the gears, greatly improves the service life of the transmission bevel gear 332a and the locking bevel gear 332b, reduces the maintenance frequency of the device, and lowers the operating cost of the device.

[0050] Please see Figures 13-15 Since the first bevel gear 823 meshes with the adjusting gear disk 84, the adjusting motor 83 can drive the first bevel gear 823 to rotate while driving the adjusting gear disk 84 to rotate. This allows for adjustment of the tilt angle of the reverse fan blade 822, enabling the torque generated by the reverse fan blade 822 at the same wind speed to be adjusted. This allows the first bevel gear 823 to be adjusted according to the specific data of the fan blade 114, enabling the device to achieve targeted angle adjustment for fan blades 114 of different specifications, thus expanding the applicability of the device.

[0051] The method of using this invention is as follows:

[0052] Before use, the tilt angle of the reverse fan blade 822 is adjusted by adjusting the motor 83 according to the specific specifications of the fan blade 114, thereby adjusting the torque generated by the reverse fan blade 822 at a certain wind speed, so as to ensure that when the wind speed reaches the threshold, the drive device 8 can adjust the tilt angle of the fan blade 114 independently.

[0053] In use, the outer surface of the power generation chamber 6 is streamlined. The airflow flows along the outer surface of the power generation chamber 6 and comes into contact with the entire drive device 8, thereby pushing the entire drive device 8 to move to the right. Since the transmission inner shaft 7 connects the drive device 8 and the adjustment device 3, it drives the entire adjustment device 3 to move synchronously, causing the locking disc 34 to disengage from the locking seat 9. At the same time, the locking bevel gear 332b disengages from the first bevel gear 823 and is engaged with the transmission bevel gear 332a. The torque generated by the airflow on the reverse fan blade 822 and the torque generated by the fan blade 114 The torque generated is opposite. When the wind speed is high enough, the torque generated by the reversing fan blade 822 overcomes the elastic force of the return spring 32, causing the adjustment device 3 to rotate as a whole. Since the transmission bevel gear 332a is in mesh with the second bevel gear 112, it drives the connecting shaft Ⅲ 111 to rotate along its own axis, thereby driving the mounting shaft 113 to rotate and changing the deflection angle of the fan blade 114. The device adopts a coaxial design, and the actual wind speed borne by the reversing fan blade 822 is the same as the actual wind speed borne by the fan blade 114, ensuring more precise adjustment.

[0054] When the wind speed drops below the trigger threshold, the reset spring 32 can drive the adjustment device 3, the transmission inner shaft 7 and the drive device 8 to reset as a whole, so that the locking bevel gear 332b and the second bevel gear 112 are re-engaged. At the same time, the locking disc 34 and the locking seat 9 are re-engaged. At this time, the adjustment device 3 as a whole cannot rotate, and the locking bevel gear 332b cannot rotate. It also prevents the second bevel gear 112 from rotating through the meshing action. The gear that locks the second bevel gear 112 and the gear that drives the second bevel gear 112 to rotate are designed separately, namely the transmission bevel gear 332a and the locking bevel gear 332b.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wind power generation device, comprising a connecting steel sleeve (1), characterized in that: One end of the connecting steel sleeve (1) is fixedly connected to a windward front end (2), a stroke sleeve (4) is fixedly installed inside the windward front end (2), an adjusting device (3) is connected inside the stroke sleeve (4), the other end of the connecting steel sleeve (1) is fixedly connected to a connecting outer shaft (5), a power generation cavity (6) is sleeved on the connecting outer shaft (5), one end of the adjusting device (3) is fixedly installed with a transmission inner shaft (7), one end of the transmission inner shaft (7) is installed with a drive device (8), a locking seat (9) is fixedly installed inside the adjusting device (3), a connecting base (10) is provided outside the adjusting device (3), and a rotating device (11) is fixedly connected to the connecting base (10). The drive device (8) includes a housing (81), a reversing device (82) is sleeved on the housing (81), an adjusting motor (83) is fixedly installed inside the housing (81), an adjusting gear (84) is fixedly installed on the output shaft of the adjusting motor (83), and a windward plate (85) fixedly connected to the transmission inner shaft (7) is fixedly installed on one side of the housing (81). The reversing device (82) includes a connecting shaft II (821), which is movably connected to the housing (81). One end of the connecting shaft II (821) is fixedly fitted with a reversing fan blade (822), and the other end of the connecting shaft II (821) is fixedly fitted with a first bevel gear (823) that meshes with the adjusting gear disc (84). The adjusting device (3) includes a stroke shaft (31), which is movably installed in a stroke sleeve (4). One end of the stroke shaft (31) is provided with a return spring (32), one end of which is fixedly connected to the stroke sleeve (4). One end of the stroke shaft (31) is fixedly mounted with a locking transmission device (33), and one end of the locking transmission device (33) is fixedly mounted with a locking disc (34). One side of the locking disc (34) is fixedly connected to the transmission inner shaft (7). The locking disc (34) is provided with a protrusion for locking. The locking transmission device (33) includes a connecting shaft I (331), and both ends of the connecting shaft I (331) are respectively provided with a transmission bevel gear (332a) and a locking bevel gear (332b). The rotating device (11) includes a connecting shaft III (111), a second bevel gear (112) is fixedly mounted at the bottom of the connecting shaft III (111), an mounting shaft (113) is fixedly mounted at the top of the connecting shaft III (111), a fan blade (114) is fixedly mounted at the top of the mounting shaft (113), and a bearing connecting seat (115) fixedly connected to the connecting base (10) is also sleeved on the mounting shaft (113). The second bevel gear (112) is combined with the locking transmission device (33), and the tilting direction of the fan blade (114) is opposite to the tilting direction of the reversing device (82). When the adjusting device (3) is in the initial position, the locking bevel gear (332b) meshes with the second bevel gear (112), and the locking seat (9) cooperates with the locking disc (34). When the adjusting device (3) moves to the right, the transmission bevel gear (332a) meshes with the second bevel gear (112), and the locking seat (9) disengages from the locking disc (34). The torque generated by the reverse fan blade (822) can overcome the elastic force of the return spring (32) and drive the adjustment device (3) to rotate as a whole. Since the transmission bevel gear (332a) is in the meshing state with the second bevel gear (112), it drives the connecting shaft III (111) to rotate along its own axis, drives the mounting shaft (113) to rotate, and the deflection angle of the fan blade (114) changes.

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