Emergency miniature wind driven generator

Abstract

The invention belongs to the technical field of wind power generation, particularly relates to an emergency miniature wind driven generator, and provides the following scheme that in the mounting process, a fan blade assembly is in sliding connection with a crankshaft through a butt joint hole, a rectangular clamping block and a clamping groove achieve circumferential positioning, axial fixing can be completed only by screwing a single nut, the assembly time is saved by 60% compared with traditional multi-bolt connection, and the assembly efficiency is improved. The rapid deployment requirement in an emergency scene is met, a single person can complete installation within two minutes, and the device is suitable for scenes needing rapid power supply, such as field operation and emergency communication; the top sealing cover is positioned through the top clamping block and the top clamping groove and locked through the elastic fixing mechanism, so that the top sealing cover completely shields the bolt and the nut, rainwater is guided to flow outwards in cooperation with the design of the T-shaped section and the arc-shaped fillet, and the corrosion rate of the bolt is reduced by 80%; and the bottom supporting disc and the bottom clamping block limit axial movement of the fan blade assembly, double limiting of the nut and the top sealing cover is combined, the bolt loosening probability in the vibration environment is reduced, and the power generation stability is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, in particular to an emergency micro wind turbine generator. Background Art

[0002] In emergency power supply scenarios, micro wind turbines have become key energy replenishment equipment due to their advantages of flexible deployment and adaptability to diverse environments, providing power support for field operations and emergency communication base stations in remote areas. Small vertical axis wind turbines are widely used in the field of emergency micro wind power because they do not need to face the wind and have a compact structure. The convenience and stability of their fan blade installation are directly related to the rapid commissioning of the equipment and its continuous power generation capacity, which is of great significance to improving the efficiency of emergency power supply.

[0003] The structure of existing small vertical axis wind turbines mainly consists of components such as blades, connecting plates, generator shafts, flanges, bearings, bases and nacelle shells. Among them, the blades, as the core components for capturing wind energy, are usually fixed to the connecting plates by welding or bolts. The connecting plate has a mounting hole at the end away from the blades, which is fastened to the flange at the front end of the generator shaft by bolts, forming a transmission chain of "blades, connecting plates, and flanges". The generator shaft is supported on the base by bearings to ensure smooth rotation, and the base is fixed to the ground or a bracket to bear the weight of the entire machine. The external nacelle shell protects the generator body, bearings and other components to prevent the intrusion of rain, sand and dust. In addition, some models are also equipped with a hub as a blade integration carrier, which is fixed to the generator shaft by key connection or bolts to achieve circumferential uniform distribution of multiple blades. This traditional configuration consisting of mechanical connectors, rotating parts and protective structures relies on mature machining technology to achieve the conversion of wind energy into mechanical energy, but its assembly complexity and connection reliability have always been key issues restricting its application in emergency scenarios.

[0004] The existing installation method has significant disadvantages in actual application: on the one hand, the installation of multiple fan blades requires corresponding multiple sets of bolt-plate connections, and the bolts need to be calibrated and tightened one by one during assembly. The process is cumbersome and time-consuming, and it is difficult to adapt to the needs of rapid deployment in emergency scenarios; on the other hand, the bolts are exposed to the outside and are eroded by the outdoor environment (such as rain, dust, and salt spray) for a long time. They are prone to rust and corrosion, which reduces the connection strength. In addition, in the mobile transportation and field operation vibration environment that often accompanies emergency micro-generators, the bolts are easy to loosen, causing the fan blades to shift and fall off, affecting the stability of power generation and even causing equipment damage; in addition, the multi-bolt installation mode has high requirements for installation space and operating precision, which increases the difficulty of assembly in the field without professional tools, and restricts the efficient application of emergency micro-wind turbines.

[0005] Emergency micro wind turbines are needed for this purpose. Summary of the Invention

[0006] The emergency micro wind turbine proposed in the present invention solves the problems in the prior art of requiring calibration and tightening of bolts one by one during assembly, which is a cumbersome and time-consuming process, and the bolts are exposed to the outside and are corroded by the outdoor environment (such as rain, dust, and salt spray) for a long time.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An emergency micro wind turbine generator comprises a body and a shaft, wherein a fan blade assembly is detachably mounted on the shaft, and a locking mechanism for fixing the fan blade assembly to the shaft is provided on the shaft;

[0009] The fan blade mechanism includes a mounting frame, a blade and a connecting column. The mounting frame is fixedly connected to the connecting column and the blade, and a docking hole is opened in the middle of the mounting frame and the connecting column for sliding connection with the machine shaft. A card slot communicating with the docking hole is opened on the mounting frame and the connecting column, and a rectangular card block is installed on the outer wall of the machine shaft for sliding connection with the card slot.

[0010] The locking mechanism includes a bolt fixedly mounted on the top of the machine shaft and a nut mounted on the bolt and abutted against the connecting column, and a top cover slidably mounted on the connecting column. The inner wall of the top of the top cover is abutted against the top of the nut, and an elastic fixing mechanism is provided inside the top cover and on the bolt for fixing the position of the top cover, and the top cover completely covers the bolt and nut after installation.

[0011] Preferably, the fan blade mechanism includes multiple groups of mounting frames, blades and connecting columns, the outer ends of the multiple groups of mounting frames are fixedly connected to the inner walls of the multiple groups of blades, a group of connecting columns are installed in the middle of the multiple groups of mounting frames, and only the top group of connecting columns is slidably installed on a top cover.

[0012] Preferably, multiple groups of support plates are installed at equal angles at the ends of the connecting columns, and both ends of the support plates are connected to a group of connecting columns, and the distance between the outer wall of the support plate and the midpoint of the docking hole is greater than the radius of the docking hole.

[0013] Preferably, the locking mechanism also includes a bottom support plate installed on the machine shaft and abutting against the bottom group of connecting columns, and multiple groups of bottom clamping blocks are installed at equal angles on the top of the bottom support plate, and a bottom of the bottom group of connecting columns is provided with a bottom clamping groove corresponding to the bottom clamping block.

[0014] Preferably, the length of the shaft above the bottom support plate is ≤ the distance between the top surface of the topmost group of connecting columns and the top surface of the bottom support plate, and the diameter of the shaft is larger than the diameter of the bolt, and the sum of the shaft diameter and the thickness of the rectangular block is smaller than the diameter of the nut.

[0015] Preferably, an avoidance hole corresponding to the bolt is opened on the inner wall of the top cover, and the diameter of the avoidance hole is larger than the diameter of the bolt, and the depth of the avoidance hole is smaller than the thickness of the top end of the top cover.

[0016] Preferably, the locking mechanism also includes a top card block installed at an equal angle on the inner wall of the top cover and a top card slot opened on the top outer wall of a group of connecting columns at the top, and the inner wall of the top cover and the inner wall of the top card block are respectively attached to the outer wall of the connecting column and the outer wall of the top card slot.

[0017] Preferably, the elastic fixing mechanism includes multiple sets of positioning blocks slidably installed in the top of the top cover and positioning grooves opened at equal angles on the side walls of the bolt and corresponding to the positioning blocks, and a spring connected to the positioning blocks is installed in the top of the top cover, and the outer corners of the positioning blocks are all designed to be beveled.

[0018] Preferably, a control ring is provided in the middle of the top cover, and multiple groups of limit sliders slidably connected to the top cover are installed at the bottom of the control ring, and a pull rope connected to the positioning block is installed on the outer wall of the limit slider, and a guide wheel corresponding to the pull rope is installed in the top cover.

[0019] Preferably, the cross-section of the top cover is T-shaped, and the maximum diameter of the top cover is larger than the diameter of the control ring, and an avoidance groove corresponding to the control ring is provided on the top cover, and the opening corners of the avoidance groove and the bottom corners of the top of the top cover are both arc-shaped and rounded.

[0020] The present invention proposes an emergency micro wind turbine. Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention is equipped with components such as rectangular blocks and slots. During the installation process, the fan blade assembly is slidably connected to the machine shaft through the docking hole, and the rectangular blocks and slots achieve circumferential positioning. Axial fixation can be completed by tightening a single nut, which saves 60% of assembly time compared with traditional multi-bolt connections, meeting the needs of rapid deployment in emergency scenarios. A single person can complete the installation within 2 minutes, and is suitable for scenarios requiring fast power supply such as field operations and emergency communications.

[0022] 2. The present invention is provided with a top clamping block and a top clamping slot, and the top cover is positioned by the top clamping block and the top clamping slot, and is locked by an elastic fixing mechanism, so that the top cover completely covers the bolts and nuts, and the T-shaped cross-section and arc-shaped rounded corner design guide the outflow of rainwater, reducing the bolt rust rate by 80%; and the bottom support plate and the bottom clamping block limit the axial movement of the fan blade assembly, combined with the double limit of the nut and the top cover, reducing the probability of bolt loosening in a vibration environment, thereby ensuring the stability of power generation.

[0023] 3. The present invention is provided with a support plate. During actual use, multiple groups of connecting columns form an annular support structure through the support plate, thereby improving the overall stiffness of the fan blade assembly and reducing rotational deformation. The support plate replaces the integral connecting column, which reduces the weight of the equipment while ensuring strength, and is suitable for mobile transportation scenarios. At the same time, the diameter design of the machine shaft and the rectangular block ensures that the nut completely covers the connection part, avoiding rotation interference and improving transmission reliability.

[0024] 4. The present invention is equipped with components such as a control ring and a pull rope, so that the top cover can be unlocked by pulling the control ring and the pull rope, and the top cover can be removed without additional tools; the detachable design of the top cover facilitates the inspection or replacement of bolts and nuts, reducing maintenance costs by 50%; the structural design is suitable for outdoor environments such as rain and dust, and can operate stably in complex scenarios such as remote areas and disaster sites, broadening the application scope of emergency power supply equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the present invention after the parts are disassembled;

[0027] Figure 3 This is a schematic diagram of the partial structure after the connecting column and the bottom support plate are connected in the present invention;

[0028] Figure 4 For the present invention Figure 3 Schematic diagram of the structure after the parts are disassembled;

[0029] Figure 5 It is a schematic diagram of the structure of the connecting column and the supporting plate in the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the top cover after side section in the present invention;

[0031] Figure 7 For the present invention Figure 2 The schematic diagram of the structure after enlarging at A in the middle;

[0032] Figure 8 This is a schematic diagram of the structure of the top cover after being cut open in the present invention;

[0033] Figure 9 For the present invention Figure 8 Schematic diagram of the structure with the top cover removed.

[0034] Description of reference numerals:

[0035] 1. Machine body; 2. Machine shaft; 20. Rectangular block; 21. Slot; 3. Mounting frame; 4. Blade; 5. Connecting column; 50. Docking hole; 51. Support plate; 6. Bottom support plate; 60. Bottom block; 61. Bottom slot; 7. Top cover; 70. Avoidance hole; 71. Top block; 72. Top slot; 8. Bolt; 9. Nut; 10. Positioning block; 11. Positioning slot; 12. Spring; 13. Control ring; 130. Avoidance slot; 14. Limit slider; 15. Pull rope. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1-9 The present invention provides a technical solution: an emergency micro wind turbine, comprising a body 1 and a shaft 2, wherein a fan blade assembly is detachably mounted on the shaft 2, and a locking mechanism is used to quickly fix and protect the fan blades, thereby solving the problem of cumbersome assembly and easy corrosion of traditional bolt connections;

[0038] Specifically, the fan blade assembly consists of multiple sets of mounting frames 3, blades 4 and connecting columns 5;

[0039] The connecting column 5 in the middle of the mounting frame 3 is provided with a docking hole 50 for sliding connection with the crankshaft 2, and the hole wall of the docking hole 50 is provided with a clamping groove 21 that cooperates with the rectangular clamping block 20 of the crankshaft 2 to achieve circumferential positioning of the connection between the connecting column 5 and the crankshaft 2;

[0040] The locking mechanism in this embodiment includes a bolt 8, a nut 9, a top cover 7 and an elastic fixing mechanism;

[0041] During docking, the docking hole 50 of the connecting column 5 is slidably connected to the shaft 2. When inserted, the rectangular block 20 slides along the slot 21 to ensure that the circumferential angle of the fan blade assembly is fixed; the bottom connecting column 5 cooperates with the bottom block 60 and the bottom slot 61 of the bottom support plate 6 to further limit axial movement and prevent the fan blade assembly from tilting during installation;

[0042] During use, multiple groups of connecting columns 5 are connected by support plates 51 to form an annular support structure. The two ends of the support plates 51 are fixed to the connecting columns 5. The distance between the outer wall and the midpoint of the docking hole 50 is greater than the hole radius, thereby enhancing the overall stiffness of the fan blade assembly and reducing deformation during rotation.

[0043] In addition, the existing bolt 8 is fixed to the top of the crankshaft 2 of this embodiment. After inserting the connecting column 5, tightening the nut 9 will make it fit with the top surface of the connecting column 5, completing the axial fixation. This process only requires the operation of a single nut 9, saving 60% of assembly time compared to the traditional multi-bolt 8 connection.

[0044] In this embodiment, the top card block 71 on the inner wall of the top cover 7 is inserted into the top card groove 72 of the connecting column 5 to achieve angular positioning; when the top cover 7 slides downward, the positioning block 10 is squeezed into the top cover 7 by the inclined surface of the bolt 8 until the positioning block 10 is aligned with the positioning groove 11 of the bolt 8. At this time, the spring 12 pushes the positioning block 10 into the groove, fixing the position of the top cover 7 and completely covering the bolt 8 and nut 9.

[0045] Because the top cover 7 in this embodiment is T-shaped, the arc-shaped rounded corner design on its top guides rainwater to flow down along the edge, and the avoidance hole 70 maintains a gap with the bolt 8 to avoid interference between the bolt 8 and the top cover 7. According to tests, the setting of the top cover 7 can reduce the rust rate of the bolt 8 by 80%.

[0046] By installing the fan blade assembly and the locking mechanism, when disassembling the fan, one only needs to pull the control ring 13, and then pull the positioning block 10 through the pull rope 15 to release the top cover 7 lock. After pulling the top cover 7 upward, the nut 9 can be loosened. A single person can complete the disassembly within 2 minutes, which is more efficient than the traditional method.

[0047] Because the sum of the diameter of the machine shaft 2 and the thickness of the rectangular block 20 in this embodiment is smaller than the diameter of the nut 9, it is ensured that the nut 9 completely covers the rectangular block 20 to avoid rotation interference; and the length of the machine shaft 2 above the bottom support plate 6 is ≤ the distance between the top surface of the topmost connecting column 5 and the top surface of the bottom support plate 6, so that the top end of the bolt 8 will protrude from the docking hole 50, ensuring that there is no axial shaking of the fan blade assembly after installation.

[0048] The working principle of the present invention is as follows: when the fan blade assembly of the generator needs to be installed, first, the docking hole 50 at the bottom of the connecting column 5 in the fan blade assembly is processed to be slidably connected to the machine shaft 2. During this process, because the top corners of the machine shaft 2 and the top corners of its top bolt 8 are both beveled, the difficulty of connecting the docking hole 50 with the machine shaft 2 is effectively reduced. Then, the angle of the connecting column 5 is adjusted until the rectangular block 20 corresponds to the position of the card slot 21, and then the connecting column 5 can slide downward and start docking until the bottom of the bottom group of connecting columns 5 is in contact with the top surface of the bottom support plate 6. During this process, the bottom card block 60 will enter the bottom card slot 61, further limiting the fixity of the connection angle between the connecting column 5 and the machine shaft 2.

[0049] When the connecting post 5 cannot slide down any further, the bolt 8 on the top of the crankshaft 2 will protrude from the docking hole 50. The user can then install the nut 9 onto the bolt 8 so that the nut 9 is in contact with the top surface of the connecting post 5. This completes the connection between the connecting post 5 and the crankshaft 2. During the entire connection process, the user only needs to turn one nut 9 to complete the fixation, which is very convenient.

[0050] After that, the user picks up the top cover 7 and installs it on the connecting column 5. During this process, the user only needs to adjust the angle of the top cover 7 so that the top clamping block 71 enters the top clamping groove 72 to limit the angle of the top cover 7, thereby ensuring the fixity of the angle of the top cover 7 after installation. In the process of installing the top cover 7, because the end of the positioning block 10 inside it is located in the avoidance hole 70 when it is not installed, as the top cover 7 begins to approach the connecting column 5, the bevel angle of the end of the positioning block 10 will come into contact with the inclined surface of the top of the bolt 8 (the side wall of the end face of the bolt 8 on the market is currently designed with an inclined surface, so this is not deliberately emphasized). As the top cover 7 continues to slide toward the connecting column 5, the positioning block 10 will begin to slide toward the inside of the top cover 7 under the guidance of the inclined surface of the bolt 8, and the spring 12 will be squeezed and start to store energy;

[0051] In addition, during the sliding process of the top cover 7 into the connecting column 5, the avoidance hole 70 is provided inside, so that the top cover 7 and the bolt 8 do not interfere with each other. When the inner wall of the top cover 7 is in contact with the top surface of the nut 9, the position of the positioning block 10 corresponds to the position of the positioning groove 11. At this time, the spring 12 will push the positioning block 10 into the positioning groove 11, so that the position of the top cover 7 is fixed and cannot be raised or lowered, thereby ensuring the protective effect of the top cover 7 on the bolt 8 and the nut 9, and effectively preventing the bolt 8 and the nut 9 from being seriously rusted due to erosion by rainwater.

[0052] At the same time, because the top inner wall of the top cover 7 is in contact with the top surface of the nut 9, and the position of the top cover 7 is fixed, the fixity of the position of the nut 9 is effectively guaranteed, and the bolt 8 is fixedly connected to the top of the shaft 2, thereby effectively reducing the probability of the nut 9 becoming loose, further ensuring the safety of the generator when in use;

[0053] In actual use, the multiple groups of support plates 51 will cooperate with each other to support the multiple groups of connecting columns 5, thereby ensuring the stability of the multiple groups of mounting frames 3 when supporting the blades 4. At the same time, the bottom support plate 6 and the multiple groups of bottom clamping blocks 60 will cooperate with the rectangular clamping blocks 20 to lock the angle between the connecting columns 5 and the machine shaft 2, ensuring that the connecting columns 5 can smoothly drive the machine shaft 2 to start rotating. The arrangement of multiple groups of support plates 51 is lighter than directly using a whole connecting column 5.

[0054] When it rains, the top cover 7 is designed in a T-shape as a whole, and the diameter of its bottom is small, so that its top forms a structure similar to an eaves. At the same time, the bottom corners of its top and the opening corners of the avoidance groove 130 are designed with arc-shaped rounded corners, so that when rainwater flows down along the top cover 7, it will not directly enter the avoidance groove 130, thereby preventing rainwater from entering the interior of the top cover 7.

[0055] When the nut 9 needs to be removed, the control ring 13 is pulled upward to drive the limit slider 14 to start moving upward. Since a guide wheel corresponding to the pull rope 15 is provided in the top cover 7, when the control ring 13 slides upward, the limit slider 14 will pull the positioning block 10 into the top cover 7 through the pull rope 15, thereby separating the positioning block 10 from the positioning groove 11, so that the top cover 7 can move upward at this time. Then, the top cover 7 is pulled upward to separate it from the connecting column 5. At this time, the bolt 8 and nut 9 will be exposed, and the disassembly operation can be carried out.

[0056] This generator uses an innovative structure in which the top card slot 72 and the top card block 71 are positioned and locked with a single nut 9 to achieve rapid installation and reliable fixation of the fan blade assembly. At the same time, the top cover 7 is combined with an elastic positioning mechanism to isolate the bolt 8 from the external environment, thereby improving the applicability of the equipment in emergency scenarios; simplifying the assembly process, enhancing connection reliability, and reducing maintenance difficulty, making it suitable for scenarios that require rapid deployment, such as field operations and emergency communications.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Emergency micro wind turbine, characterized in that: The machine comprises a machine body (1) and a machine shaft (2), wherein a fan blade assembly is detachably mounted on the machine shaft (2), and a locking mechanism for fixing the fan blade assembly to the machine shaft (2) is provided on the machine shaft (2); The fan blade mechanism comprises a mounting frame (3), a blade (4) and a connecting column (5); the mounting frame (3) is fixedly connected to the connecting column (5) and the blade (4); a docking hole (50) slidably connected to the machine shaft (2) is provided in the middle of the mounting frame (3) and the connecting column (5); a clamping groove (21) communicating with the docking hole (50) is provided on the mounting frame (3) and the connecting column (5); and a rectangular clamping block (20) slidably connected to the clamping groove (21) is installed on the outer wall of the machine shaft (2); The locking mechanism comprises a bolt (8) fixedly mounted on the top of the machine shaft (2), a nut (9) mounted on the bolt (8) and in contact with the connecting column (5), and a top cover (7) slidably mounted on the connecting column (5), wherein the top inner wall of the top cover (7) is in contact with the top of the nut (9), and an elastic fixing mechanism is provided inside the top cover (7) and on the bolt (8) for fixing the position of the top cover (7), and after the top cover (7) is installed, the bolt (8) and the nut (9) are completely covered.

2. The emergency micro wind turbine according to claim 1, characterized in that: The fan blade mechanism comprises a plurality of mounting frames (3), blades (4) and connecting columns (5); the outer ends of the plurality of mounting frames (3) are fixedly connected to the inner walls of the plurality of blades (4); a group of connecting columns (5) is installed in the middle of the plurality of mounting frames (3); and a top cover (7) is slidably installed only on the uppermost group of connecting columns (5).

3. The emergency micro wind turbine according to claim 2, characterized in that: The end of the connecting column (5) is provided with a plurality of groups of support sheets (51) at equal angles, and both ends of the support sheets (51) are connected to a group of connecting columns (5), and the distance between the outer wall of the support sheet (51) and the midpoint of the docking hole (50) is greater than the radius of the docking hole (50).

4. The emergency micro wind turbine according to claim 1, characterized in that: The locking mechanism further comprises a bottom support plate (6) mounted on the machine shaft (2) and in contact with a bottom group of connecting columns (5), and a plurality of bottom clamping blocks (60) are mounted at equal angles on the top of the bottom support plate (6), and a bottom clamping groove (61) corresponding to the bottom clamping block (60) is provided at the bottom of the bottom group of connecting columns (5).

5. The emergency micro wind turbine according to claim 4, characterized in that: The length of the machine shaft (2) above the bottom support plate (6) is less than or equal to the distance between the top surface of the topmost group of connecting columns (5) and the top surface of the bottom support plate (6), and the diameter of the machine shaft (2) is greater than the diameter of the bolt (8), and the sum of the diameter of the machine shaft (2) and the thickness of the rectangular block (20) is less than the diameter of the nut (9).

6. The emergency micro wind turbine according to claim 1, characterized in that: The inner wall of the top cover (7) is provided with a relief hole (70) corresponding to the bolt (8), and the diameter of the relief hole (70) is larger than the diameter of the bolt (8), and the depth of the relief hole (70) is smaller than the thickness of the top end of the top cover (7).

7. The emergency micro wind turbine according to claim 1, characterized in that: The locking mechanism further comprises a top clamping block (71) mounted at equal angles on the inner wall of the top sealing cover (7) and a top clamping groove (72) provided on the outer wall of the top of a group of connecting columns (5) at the top, and the inner wall of the top sealing cover (7) and the inner wall of the top clamping block (71) are respectively in contact with the outer wall of the connecting column (5) and the outer wall of the top clamping groove (72).

8. The emergency micro wind turbine according to claim 1, characterized in that: The elastic fixing mechanism comprises a plurality of positioning blocks (10) slidably mounted in the top of the top cover (7) and positioning grooves (11) provided at equal angles on the side walls of the bolts (8) and corresponding to the positioning blocks (10), and a spring (12) connected to the positioning blocks (10) is mounted in the top of the top cover (7), and the outer corners of the positioning blocks (10) are all designed to be beveled.

9. The emergency micro wind turbine according to claim 8, characterized in that: A control ring (13) is provided in the middle of the top cover (7), and a plurality of limit sliders (14) slidably connected to the top cover (7) are installed at the bottom of the control ring (13), and a pull rope (15) connected to the positioning block (10) is installed on the outer wall of the limit slider (14), and a guide wheel corresponding to the pull rope (15) is installed in the top cover (7).

10. The emergency micro wind turbine according to claim 9, characterized in that: The cross section of the top cover (7) is T-shaped, and the maximum diameter of the top cover (7) is larger than the diameter of the control ring (13). The top cover (7) is provided with an avoidance groove (130) corresponding to the control ring (13), and the opening corners of the avoidance groove (130) and the bottom corners of the top of the top cover (7) are both designed with arc-shaped rounded corners.

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