Height adjusting device for wind power generation impeller

Abstract

The invention discloses a wind power generation impeller height adjusting device, and belongs to the field of wind power generation, the wind power generation impeller height adjusting device comprises a base and a fixing column, an air cylinder is fixedly connected to the inner bottom end of the fixing column, a mounting column is fixedly connected to the output end of the air cylinder, fixing blocks are fixedly connected to the outer wall of the mounting column, and a rotating shaft is rotatably connected between the fixing blocks; the outer wall of the rotating shaft is fixedly connected with a rotating plate. Through the linkage design of the rotating plate, the connecting rod, the anti-falling plate and the anti-falling rod, an anti-falling mechanism can be triggered when the mounting column rapidly descends, the wind driven generator body is prevented from falling, under the condition that an air cylinder fails or other abnormal conditions, the anti-falling device can rapidly respond, the mounting column and the wind driven generator body are prevented from rapidly falling, and the service life of the wind driven generator is prolonged. And by means of the design of a torsional spring A, a torsional spring B and a tension spring, the anti-falling plate and the rotating plate can automatically reset after being separated from the anti-falling rod, and it is ensured that the height adjusting function cannot be affected when the device normally operates.

Description

Technical Field

[0001] This application relates to the field of wind power generation, and more particularly, to a device for adjusting the height of a wind power generation impeller. Background Art

[0002] The wind power generation impeller (or wind turbine blade) is one of the key components of a wind turbine, responsible for converting the kinetic energy of the wind into mechanical energy. The impeller is the "core" of the wind turbine, directly affecting the power generation efficiency and system performance. The wind blows the blades, and the blades generate lift and drag due to the principles of aerodynamics, which causes the blades to rotate around the hub. The rotating impeller transfers mechanical energy to the connecting shaft and then converts it into electrical energy through the rotation of the generator.

[0003] As disclosed in Chinese Patent Publication No. CN116221025A, the technical solution disclosed in this patent document is as follows: A device for adjusting the height of a wind power generation impeller, comprising: a positioning column, a support column, a fixing plate, a power generation impeller body, and an electric push rod; the positioning column is fixedly connected to the fixing plate through the support column; a groove is provided on the fixing plate; a fixing seat is provided in the groove; the fixing seat is used to place the power generation impeller body; the electric push rods are symmetrically arranged on the fixing plate and are used to push the power generation impeller body; solving the problem that the height of the existing wind power generation impeller cannot be adjusted.

[0004] Regarding the existing technology, the following problems exist: Although the fixing seat and the support column enhance the stability through the connecting block and the support seat, these components rely on mechanical connections to maintain stability. If under the action of wind for a long time or when the external force is too large, the connection part may become loose, thereby affecting the stability of the power generation impeller body and increasing the risk of falling. The connection between the electric push rod and the fixing block is the core part of the impeller lifting. However, if the connection between the output end of the electric push rod and the fixing block fails or is damaged, it may cause the lifting function of the impeller body to fail, and even cause the impeller body to be unstable, resulting in falling. Summary of the Invention

[0005] In view of the deficiencies of the existing technology, the present invention provides a device for adjusting the height of a wind power generation impeller, solving the problems raised in the above background art.

[0006] To achieve the above object, the present application provides a wind power generation impeller height adjustment device, including a base, the upper end of the base is fixedly connected with a fixed column, the inner bottom end of the fixed column is fixedly connected with a cylinder, the output end of the cylinder is fixedly connected with an installation column, the outer wall of the installation column is fixedly connected with fixed blocks, a rotating shaft is rotatably connected between the fixed blocks, a rotating plate is fixedly connected to the outer wall of the rotating shaft, a connecting rod is fixedly sleeved on the outer wall of the rotating shaft, a torsion spring A is fixedly connected between the rotating plate and the connecting rod, a fixing plate is fixedly connected to the outer wall of the installation column, an anti-falling plate is arranged inside the fixing plate, a torsion spring B is fixedly connected between the fixed block and the connecting rod, a tension spring is fixedly connected between the installation column and the anti-falling plate, a connecting plate is arranged inside the fixed column, an anti-falling rod is fixedly connected between the connecting plates, clamping components and buffer components are assembled on the outer walls of the fixed column and the installation column, and a wind turbine generator body is arranged on the top of the installation column.

[0007] Preferably, a guiding groove is formed on the side surface of the fixing plate, a sliding shaft is fixedly connected to the outer wall of the anti-falling plate, and the sliding shaft is slidably connected inside the guiding groove.

[0008] Preferably, an arc-shaped groove is formed on the side surface of the rotating plate, a limiting rod is fixedly connected to the outer wall of the rotating shaft, and one end of the limiting rod is slidably connected inside the arc-shaped groove.

[0009] Preferably, a damper is fixedly connected to the inner bottom end of the fixed column, and the upper end of the damper is fixedly connected to the connecting plate.

[0010] Preferably, the clamping component includes a connecting block, the connecting block is fixedly connected to the outer wall of the connecting plate, a hydraulic chamber is fixedly connected to the outer wall of the fixed column, a hydraulic rod A and a hydraulic rod B are respectively slidably connected inside two ports of the hydraulic chamber, the other end of the hydraulic rod A is fixedly connected to the connecting block, a pushing block is fixedly connected to the upper end of the hydraulic rod A, an L-shaped plate is fixedly connected to the outer wall of the fixed column, a through hole is formed on the side surface of the L-shaped plate and a moving plate is slidably connected inside the through hole, a friction block is fixedly connected to the end of the moving plate close to the installation column, and a movable block is fixedly connected to the outer wall of the moving plate. The clamping component, by means of the linkage design of the hydraulic rod A, the hydraulic rod B, the pushing block and the friction block, can quickly clamp the installation column when the installation column descends rapidly, increasing the friction force between the installation column and the fixed column. The design structure of the clamping component is simple and easy to maintain. At the same time, through the linkage of the hydraulic chamber and the hydraulic rod, the reliability and stability of the clamping action are ensured. Working in coordination with the anti-falling device, a double protection mechanism is formed to further reduce the risk of the rapid falling of the installation column.

[0011] Preferably, the surfaces of the pushing block and the movable block that are in contact with each other are both set as inclined surfaces.

[0012] Preferably, the buffer assembly includes an air pump fixedly connected to the outer wall of the fixed column. The output end of the air pump is fixedly connected to a buffer airbag. A trigger rod is fixedly connected to the outer wall of the mounting column. A mounting block is fixedly connected to the bottom of the moving plate. A mounting shaft is rotatably connected to the outer wall of the mounting block. A movable plate is fixedly sleeved on the outer wall of the mounting shaft. A switch is fixedly connected to the bottom of the moving plate.

[0013] Preferably, a torsion spring C is fixedly connected between the movable plate and the mounting block. A buffer plate is fixedly sleeved on the outer wall of the mounting column. The design of the trigger rod and the movable plate in the buffer assembly enables the buffer assembly to be automatically triggered when the friction block fails to completely prevent the mounting column from falling, ensuring that the buffer mechanism is activated in a timely manner in an emergency. By inflating the buffer airbag with the air pump, a buffer force can be provided when the mounting column continues to fall, absorbing the impact energy and reducing the damage to the wind turbine body.

[0014] The advantages of this application are as follows: (1) Through the linkage design of the rotating plate, connecting rod, anti-falling plate and anti-falling rod, this application can trigger the anti-falling mechanism when the mounting column drops rapidly, preventing the wind turbine body from falling. In the event of a cylinder failure or other abnormalities, the anti-falling device can respond quickly to prevent the mounting column and the wind turbine body from dropping rapidly, avoiding equipment damage and casualties. The design of torsion spring A, torsion spring B and tension spring enables the anti-falling plate and the rotating plate to automatically reset after disengaging from the anti-falling rod, ensuring that the device does not affect the height adjustment function during normal operation.

[0015] (2) By setting the clamping assembly and using the linkage design of hydraulic rod A, hydraulic rod B, push block and friction block, this application can quickly clamp the mounting column when the mounting column drops rapidly, increasing the friction between the mounting column and the fixed column. The design structure of the clamping assembly is simple and easy to maintain. At the same time, through the linkage of the hydraulic chamber and the hydraulic rod, the reliability and stability of the clamping action are ensured. Working in coordination with the anti-falling device, a double protection mechanism is formed to further reduce the risk of the mounting column dropping rapidly.

[0016] (3) By setting the buffer assembly and using the design of the trigger rod and the movable plate, the buffer assembly can be automatically triggered when the friction block fails to completely prevent the mounting column from falling, ensuring that the buffer mechanism is activated in a timely manner in an emergency. By inflating the buffer airbag with the air pump, a buffer force can be provided when the mounting column continues to fall, absorbing the impact energy and reducing the damage to the wind turbine body. Description of the Drawings

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objectives and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the front sectional structural schematic diagram of the present invention; Figure 3 is the top sectional structural schematic diagram of the present invention; Figure 4 is the Figure 3 enlarged structural schematic diagram at position A in the present invention; Figure 5 is the Figure 4 enlarged structural schematic diagram at position B in the present invention; Figure 6 is the side sectional structural schematic diagram of the present invention; Figure 7 is the partial three-dimensional structural schematic diagram of the present invention.

[0018] In the above figures, 1. Base; 2. Fixed column; 3. Mounting column; 41. Cylinder; 42. Rotating shaft; 43. Rotating plate; 44. Connecting rod; 45. Torsion spring A; 46. Fixed plate; 47. Anti-falling plate; 48. Sliding shaft; 49. Torsion spring B; 410. Tension spring; 411. Connecting plate; 412. Anti-falling rod; 413. Damper; 414. Arc-shaped groove; 415. Limiting rod; 416. Fixed block; 417. Guide groove; 5. Clamping assembly; 51. Connecting block; 52. Hydraulic chamber; 53. Hydraulic rod A; 54. Hydraulic rod B; 55. L-shaped plate; 56. Moving plate; 57. Friction block; 58. Pushing block; 59. Movable block; 6. Buffer assembly; 61. Air pump; 62. Buffer airbag; 63. Trigger rod; 64. Mounting block; 65. Mounting shaft; 66. Movable plate; 67. Torsion spring C; 68. Switch; 69. Buffer plate; 7. Wind turbine body. Detailed implementation manners

[0019] In order to enable those skilled in the art of the present technology to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0020] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to describe the embodiments of this application here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0022] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0023] In addition, the terms "install", "set", "be provided with", "connect", "be connected", "be sleeved" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can also be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in combination with the embodiments. Embodiment 1

[0025] See Figures 1-6, this embodiment provides a wind power impeller height adjustment device, including a base 1. A fixed column 2 is fixedly connected to the upper end of the base 1. A cylinder 41 is fixedly connected to the inner bottom end of the fixed column 2. The output end of the cylinder 41 is fixedly connected to a mounting column 3. The cylinder 41 is the core component for height adjustment. The telescoping of the cylinder 41 can precisely control the height of the mounting column 3, thereby adjusting the height of the wind turbine to adapt to different wind forces and environmental conditions. A fixed block 416 is fixedly connected to the outer wall of the mounting column 3. A rotating shaft 42 is rotatably connected between the fixed blocks 416. A rotating plate 43 is fixedly connected to the outer wall of the rotating shaft 42. A connecting rod 44 is fixedly sleeved on the outer wall of the rotating shaft 42. A torsion spring A 45 is fixedly connected between the rotating plate 43 and the connecting rod 44. A fixing plate 46 is fixedly connected to the outer wall of the mounting column 3. An anti-falling plate 47 is arranged inside the fixing plate 46. A torsion spring B 49 is fixedly connected between the fixed block 416 and the connecting rod 44. A tension spring 410 is fixedly connected between the mounting column 3 and the anti-falling plate 47. A connecting plate 411 is arranged inside the fixed column 2. An anti-falling rod 412 is fixedly connected between the connecting plates 411. Clamping components 5 and buffer components 6 are assembled on the outer walls of the fixed column 2 and the mounting column 3. A wind turbine body 7 is arranged at the top of the mounting column 3. A guiding groove 417 is formed on the side surface of the fixing plate 46. A sliding shaft 48 is fixedly connected to the outer wall of the anti-falling plate 47. The sliding shaft 48 is slidably connected inside the guiding groove 417. An arc-shaped groove 414 is formed on the side surface of the rotating plate 43. A limiting rod 415 is fixedly connected to the outer wall of the rotating shaft 42. One end of the limiting rod 415 is slidably connected inside the arc-shaped groove 414. A damper 413 is fixedly connected to the inner bottom end of the fixed column 2. The upper end of the damper 413 is fixedly connected to the connecting plate 411. When the anti-falling plate 47 contacts the anti-falling rod 412, the damper 413 can absorb the impact force to prevent the anti-falling rod 412 from moving down quickly, further enhancing the anti-falling effect.

[0026] During use, when it is necessary to adjust the height of the wind turbine body 7, the cylinder 41 is started to drive the mounting column 3 to move up and down, so as to drive the wind turbine body 7 to rise or fall. When the mounting column 3 moves upward, the upper end of the rotating plate 43 located outside the mounting column 3 will contact the anti-falling rod 412, and then the rotating plate 43 will rotate downward. At this time, the limiting rod 415 on the outer wall of the rotating shaft 42 will slide inside the arc-shaped groove 414 outside the rotating plate 43. Since there is still room for movement in the left arc-shaped groove 414 of the limiting rod 415, the rotating shaft 42 will not rotate accordingly at this time. When the mounting column 3 moves downward, the lower end of the rotating plate 43 will contact the anti-falling rod 412, and then the rotating plate 43 will rotate upward under the reaction force. At this time, since there is no room for further movement in the right arc-shaped groove 414 of the limiting rod 415, the rotating plate 43 will drive the rotating shaft 42 to rotate counterclockwise through the limiting rod 415. At this time, the connecting rod 44 fixedly sleeved on its outer wall will also rotate counterclockwise. Then the connecting rod 44 will push the sliding shaft 48 to move outward inside the guide groove 417, so as to drive the anti-falling plate 47 at one end of the sliding shaft 48 to move to the side. When the rotating plate 43 leaves the anti-falling rod 412, under the action of the torsion spring A 45 and the torsion spring B 49, the connecting rod 44 and the rotating plate 43 will both return to their original positions. Similarly, the anti-falling plate 47 will move inward under the action of the tension spring 410 to return to its original position. When the mounting column 3 descends at a constant speed, the anti-falling plate 47 will retract before contacting the upper anti-falling rod 412. When the cylinder 41 fails or for other reasons and the mounting column 3 descends rapidly, since the speed of the anti-falling plate 47 to return to its original position is constant, when the mounting column 3 descends rapidly, the anti-falling plate 47 will be pressed by the upper anti-falling rod 412 before returning to its original position, which can prevent the mounting column 3 and the wind turbine body 7 from falling rapidly. At the same time, dampers 413 are provided at the lower ends of the connecting plates 411 on both sides of the anti-falling rod 412. Therefore, when the rotating plate 43 slightly contacts and collides with it, the anti-falling rod 412 will not move downward. When falling rapidly, the anti-falling plate 47 will push the anti-falling rod 412 to move downward a certain distance, and will stop when the damper 413 is compressed to the minimum stroke. Embodiment 2

[0027] See Figures 1-6, the clamping assembly 5 includes a connecting block 51, the connecting block 51 is fixedly connected to the outer wall of the connecting plate 411, the outer wall of the fixed column 2 is fixedly connected with a hydraulic chamber 52, two ports inside the hydraulic chamber 52 are respectively slidably connected with a hydraulic rod A 53 and a hydraulic rod B 54, the other end of the hydraulic rod A 53 is fixedly connected to the connecting block 51, the upper end of the hydraulic rod A 53 is fixedly connected with a pushing block 58, the outer wall of the fixed column 2 is fixedly connected with an L-shaped plate 55, a through hole is formed in the side surface of the L-shaped plate 55 and a moving plate 56 is slidably connected inside the through hole, one end of the moving plate 56 close to the mounting column 3 is fixedly connected with a friction block 57. The function of the friction block 57 is to increase the contact friction force with the mounting column 3 and improve the anti-falling effect during a rapid fall. The increase in the friction force can effectively slow down the falling speed of the mounting column 3, thereby reducing the danger. The outer wall of the moving plate 56 is fixedly connected with a movable block 59. The surfaces of the pushing block 58 and the movable block 59 that are in contact with each other are both provided with inclined surfaces.

[0028] During use, when the mounting column 3 and the wind turbine body 7 fall rapidly, the anti-falling plate 47 will push the anti-falling rod 412 to move downward by a certain distance. At this time, the connecting plate 411 on the side of the anti-falling rod 412 will then descend, and then the connecting block 51 fixedly connected to its side will descend accordingly. Then, the hydraulic rod A 53 will be squeezed, and then the hydraulic rod A 53 will slide into the interior of the hydraulic chamber 52. Then, the hydraulic rod B 54 will move upward, which can drive the pushing block 58 to move upward, and then can push the movable block 59 in contact with it to move towards the mounting column 3, and then can drive the moving plate 56 and the friction block 57 to approach the mounting column 3 until the friction block 57 is in contact with the mounting column 3, thereby increasing the friction force between the mounting columns 3 and further enhancing the anti-falling effect of the mounting column 3. Embodiment 3

[0029] See Figures 1-7, the buffer assembly 6 includes an air pump 61 which is fixedly connected to the outer wall of the fixed column 2. The output end of the air pump 61 is fixedly connected with a buffer airbag 62. The air pump 61 provides a buffering effect by inflating the buffer airbag 62. After the airbag is inflated, the buffer airbag 62 can reduce the falling speed of the wind turbine body 7, relieve the falling impact force, and prevent system damage. A trigger rod 63 is fixedly connected to the outer wall of the mounting column 3. A mounting block 64 is fixedly connected to the bottom of the moving plate 56. An outer wall of the mounting block 64 is rotatably connected with a mounting shaft 65. An outer wall of the mounting shaft 65 is fixedly sleeved with a movable plate 66. A switch 68 is fixedly connected to the bottom of the moving plate 56. The switch 68 is responsible for starting and stopping the air pump 61 and controlling the air pump 61 to start in an emergency, so as to inflate the buffer airbag 62 and further increase the stability during the falling process. A torsion spring C67 is fixedly connected between the movable plate 66 and the mounting block 64. The torsion spring C67 cooperates with the movable plate 66 to ensure that the movable plate 66 can reset after the buffering operation is completed, avoid over-inflation, and protect the long-term stable operation of the system. A buffer plate 69 is fixedly sleeved on the outer wall of the mounting column 3.

[0030] During use, when the moving plate 56 moves towards the mounting post 3, the friction block 57 will come into contact with the mounting post 3. At this time, the movable plate 66 at the lower end of the moving plate 56 just moves to the lower end of the trigger rod 63. If the friction block 57 fails to effectively prevent the mounting post 3 from continuing to move downward, the trigger rod 63 will be under pressure, and then one end of the movable plate 66 will be squeezed. As one end of the movable plate 66 is squeezed, it will start to rotate along the mounting shaft 65. This rotation causes the other end of the movable plate 66 to move upward, thereby forcing the upper end of the movable plate 66 to squeeze the switch 68 installed at this position. Once the switch 68 is squeezed, the air pump 61 will start and begin to inflate the connected buffer airbag 62. The inflation volume of the buffer airbag 62 gradually increases. In this way, when the mounting post 3 continues to fall, the external buffer plate 69 will come into contact with the top of the buffer airbag 62, thus effectively playing a buffering role. At this time, the gas charging volume of the buffer airbag 62 is directly related to the downward movement speed and weight of the mounting post 3, and the buffering effect will gradually increase with the inflation degree of the airbag, so as to reduce the impact force caused by the rapid downward fall of the mounting post 3. In addition, in order to ensure the precise operation of the device, the middle part of the trigger rod 63 is designed as an arched structure. After the trigger rod 63 moves a certain distance, the side surface of the movable plate 66 will enter the space of the arched structure and release the restrictive effect of the trigger rod 63. At this time, the movable plate 66 will return to its initial position under the elastic force of the torsion spring C67. The design of this reset mechanism can prevent the air pump 61 from over-inflating the buffer airbag 62 and avoid excessive internal pressure of the airbag, thus ensuring the service life of the buffer airbag and the safety and stability of the entire system. Through this series of delicate designs and cooperations, when the mounting post 3 moves downward, the entire system can achieve an efficient buffering function, protect the equipment from impact, and at the same time add a reset function to the trigger mechanism to prevent problems caused by over-inflation, so as to ensure the reliability and durability of the system during long-term operation.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A wind power generation impeller height adjustment device, comprising a base (1), characterized in that, The upper end of the base (1) is fixedly connected to a fixing column (2), the inner bottom end of the fixing column (2) is fixedly connected to a cylinder (41), the output end of the cylinder (41) is fixedly connected to a mounting column (3), the outer wall of the mounting column (3) is fixedly connected to a fixing block (416), the fixing blocks (416) are rotatably connected to a rotating shaft (42), the outer wall of the rotating shaft (42) is fixedly connected to a rotating plate (43), the outer wall of the rotating shaft (42) is fixedly sleeved with a connecting rod (44), a torsion spring A (45) is fixedly connected between the rotating plate (43) and the connecting rod (44), the outer wall of the mounting column (3) is fixed A fixing plate (46) is connected, an anti-falling plate (47) is provided on the inner side of the fixing plate (46), a torsion spring B (49) is fixedly connected between the fixing block (416) and the connecting rod (44), a tension spring (410) is fixedly connected between the mounting column (3) and the anti-falling plate (47), a connecting plate (411) is provided inside the fixing column (2), an anti-falling rod (412) is fixedly connected between the connecting plates (411), the outer walls of the fixing column (2) and the mounting column (3) are equipped with a clamping assembly (5) and a buffer assembly (6), and a wind turbine body (7) is provided on the top of the mounting column (3).

2. The height adjustment device for a wind power generation impeller according to claim 1, characterized in that, A guide groove (417) is provided on the side of the fixing plate (46), and a sliding shaft (48) is fixedly connected to the outer wall of the anti-fall plate (47), and the sliding shaft (48) is slidably connected to the inside of the guide groove (417).

3. The height adjustment device for a wind power generation impeller according to claim 1, characterized in that, An arc-shaped groove (414) is provided on the side of the rotating plate (43), and a limiting rod (415) is fixedly connected to the outer wall of the rotating shaft (42), and one end of the limiting rod (415) is slidably connected to the inside of the arc-shaped groove (414).

4. A wind power impeller height adjustment device according to claim 1, characterized in that, The inner bottom end of the fixed column (2) is fixedly connected to a damper (413), and the upper end of the damper (413) is fixedly connected to the connecting plate (411).

5. A wind power generation impeller height adjustment device according to claim 1, characterized in that, The clamping assembly (5) includes a connecting block (51), which is fixedly connected to the outer wall of the connecting plate (411). The outer wall of the fixed column (2) is fixedly connected to a hydraulic chamber (52), and the two ports of the hydraulic chamber (52) are slidably connected to a hydraulic rod A (53) and a hydraulic rod B (54). The other end of the hydraulic rod A (53) is fixedly connected to the connecting block (51), and the upper end of the hydraulic rod A (53) is fixedly connected to a push block (58). The outer wall of the fixed column (2) is fixedly connected to an L-shaped plate (55), and a through opening is provided on the side of the L-shaped plate (55), and a movable plate (56) is slidably connected to the inside of the through opening. The end of the movable plate (56) close to the mounting column (3) is fixedly connected to a friction block (57), and the outer wall of the movable plate (56) is fixedly connected to a movable block (59).

6. The height adjustment device for a wind power generation impeller according to claim 5, characterized in that, The surfaces of the push block (58) and the movable block (59) that are in contact with each other are both configured as inclined surfaces.

7. The height adjustment device for a wind power impeller according to claim 6, characterized in that, The buffer assembly (6) includes an air pump (61), the air pump (61) is fixedly connected to the outer wall of the fixed column (2), the output end of the air pump (61) is fixedly connected to a buffer airbag (62), a trigger rod (63) is fixedly connected to the outer wall of the mounting column (3), a mounting block (64) is fixedly connected to the bottom of the moving plate (56), a mounting shaft (65) is rotatably connected to the outer wall of the mounting block (64), a movable plate (66) is fixedly sleeved on the outer wall of the mounting shaft (65), and a switch (68) is fixedly connected to the bottom of the moving plate (56).

8. A wind power generation impeller height adjustment device according to claim 7, characterized in that, A torsion spring C (67) is fixedly connected between the movable plate (66) and the mounting block (64), and a buffer plate (69) is fixedly sleeved on the outer wall of the mounting column (3).

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