A deicing device for drone blades

Abstract

The present invention relates to the field of drones, and specifically to a deicing device for drone blades, which solves the problems of poor heating effect and cumbersome operation. The present invention comprises a frame, an arm is provided on the frame, a motor A is provided on the arm, and a blade is provided on the motor A. The motor A is slidably arranged on the arm, and a first control mechanism is provided to control the motor A to approach or move away from the frame. The motor A is connected to the blades through a telescopic member and can adjust the height of the blades. The blades are hinged and a second control mechanism is provided to control the blades to be retracted or unfolded downward. A heating device is provided on the frame, and the heating device comprises a hot air blower and an air outlet connected to the hot air blower and facing each blade. When deicing, the present invention causes the generated hot air to flow quickly to the blades, so that the blades generate an inward airflow, and the hot air on the surrounding side is sucked into the blade area, so that the hot air is fully utilized to heat the blades to achieve the deicing effect. The operation is simple and the deicing effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a deicing device for UAV blades. Background Art

[0002] Drone is a general term for unmanned aerial vehicles. Civilian drones are widely used in aerial photography, agriculture, plant protection, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting and other fields. Civilian drones mainly include a frame, motor, propellers and a main controller. The main controller drives the motor and propellers to rotate, causing the propellers to generate downward airflow, thereby generating lift and making the drone fly.

[0003] In a low-temperature environment, the propeller blades of a drone may freeze. To ensure the normal flight of the drone, the propeller blades need to be de-iced before flight. The de-icing method is generally to heat the blade surface through a certain heating device. Specifically, either a separate corresponding device is prepared for operation, or a corresponding device is directly installed on the drone frame. The separate preparation of the corresponding device can accurately operate the propeller area, but it requires additional manual operation and requires additional power supply, which is inconvenient. The corresponding heating device is directly installed on the drone frame, such as a hot air blower, which can automatically generate hot air during de-icing without excessive manual operation. However, since the propeller blades are generally installed around the frame, that is, a certain distance away from the hot air blower, it is not conducive to hot air blowing to the blades. Another method is to install a heating wire inside the blade. Although it is conducive to directly heating the blade, it is not convenient for repair. In addition, the blades of civilian drones are mostly made of plastic, such as polyamide, polycarbonate, polypropylene, etc., which have poor thermal conductivity and are not conducive to installing a heating wire.

[0004] Therefore, the present invention provides a de-icing device for UAV blades to solve the above problems. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a deicing device for drone blades, and the problem to be solved is: to provide a deicing device for drone blades that has good warming effect and is easy to operate.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A de-icing device for drone blades includes a frame, an arm mounted on the frame, a motor A mounted on the arm, and a blade mounted on the motor A. The motor A is slidably mounted on the arm and provided with a first control mechanism for controlling the motor A to move closer to or farther from the frame. The motor A is connected to the blades via a telescopic member, enabling adjustment of the blade height. The blades are hingedly mounted and provided with a second control mechanism for controlling the blades to be retracted or extended downward. A heating device is mounted on the frame, the heating device including a hot air blower and an air outlet connected to the hot air blower and directed toward each blade.

[0008] When the drone is flying, the first control mechanism controls the motor A and the blades to move away from the frame, the telescopic part lowers the blade height, and the second control mechanism controls the blades to unfold. When de-icing the blades, the first control mechanism controls the motor A and the blades to move closer to the frame and the heating device, the telescopic part raises the blade height, the second control mechanism controls the blades to retract downward, and the heating device is turned on. When motor A starts, it drives the blades to rotate, and the blades generate inward airflow to absorb hot air.

[0009] Preferably, a sliding sleeve is provided on the arm, and motor A is provided on the sliding sleeve. The first control mechanism includes a shell provided on the frame, and transmission rods are passed through the shell. The number of transmission rods corresponds to the blades and is connected to the corresponding sliding sleeves. The transmission rods are located in the shell and are provided with a first rack. The shell is also provided with a motor B, and motor B is connected to a first gear, which is connected to the first rack through the first gear.

[0010] Preferably, the frame is symmetrically provided with four groups of arms, motors A and blades, and two of the four first racks in the first control mechanism are of comparable height. The motor B is connected to two first gears, and the first gears are meshed with the corresponding two first racks. When the motor B rotates, the four first racks are driven to move inward or outward at the same time.

[0011] Preferably, a ring body is rotatably sleeved on the top of the telescopic member, and a hinged rod is hinged between the ring body and the machine arm. When the telescopic member approaches the frame, the hinged rod drives the telescopic member to extend.

[0012] Preferably, the second transmission mechanism includes a connecting plate fixedly arranged on the top of the telescopic member, the blade is hinged at the end of the connecting plate, the connecting plate is a hollow structure, and a second rack is slidingly provided inside, the second rack is connected to the hinge shaft of the blade, the second rack and the connecting plate are provided with matching fixing holes, and are fixed with corresponding fixing parts.

[0013] Preferably, the hinge shaft is connected to a second gear, the second gear is meshedly connected to a driven gear, the driven gear is arranged on the connecting plate, and the driven gear is meshedly connected to the second rack.

[0014] Preferably, the second transmission mechanism includes a connecting plate fixedly arranged on the top of the telescopic member, the blade is hinged at the end of the connecting plate, the connecting plate is a hollow structure, and a second rack is provided inside, the second rack is connected to the hinge shaft of the blade, and the second rack is connected to the third rack, the third rack is meshed with the third gear, the third gear is rotatably arranged on the connecting plate, and a ball screw is passed through the internal thread of the third gear, and the bottom of the ball screw is connected to the bottom of the telescopic member.

[0015] Preferably, a telescopic section is provided at the bottom of the ball screw, which is connected to the bottom of the telescopic member through the telescopic section.

[0016] The beneficial effects of the present invention are:

[0017] 1. When deicing, the present invention can move the blades close to the air outlet, thereby reducing the distance between the blades and the air outlet, allowing the generated hot air to flow toward the blades. At the same time, the blades are rotated downward and stored, and the rotation of the blades is controlled to generate an inward airflow, sucking the hot air from the surrounding side into the blade area, making full use of the hot air to heat the blades and achieve the effect of deicing. The present invention is simple to operate and has a good deicing effect.

[0018] 2. When the present invention uses hot air to heat the blades for de-icing, the rotation of the blades themselves can increase the friction between the hot air and the blades, which can effectively improve the de-icing effect of the hot air.

[0019] 3. In the present invention, the propeller blades are connected to the motor A through a telescopic member. When de-icing, the telescopic member extends to facilitate the downward rotation and storage of the propeller blades. When the UAV is flying, the telescopic member contracts to reduce the surface area of the device, reduce the friction during flight, and facilitate flight.

[0020] 4. The present invention can also turn on the heating device when the UAV is flying to play a certain anti-icing role.

[0021] 5. The heating device of the present invention is separately arranged from the blades, which has a simple structure and is convenient for replacing and repairing each part of the structure separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention in flight state;

[0023] Figure 2 Schematic diagram of the connection between the motor A and the blade 10 in the present invention;

[0024] Figure 3 Schematic diagram of the structure of the telescopic member in the present invention;

[0025] Figure 4 Schematic diagram of the overall structure of the second transmission mechanism in Example 1 of the present invention;

[0026] Figure 5for Figure 4 A magnified schematic diagram of point A in the middle;

[0027] Figure 6 This is a control principle diagram of the second transmission mechanism in Example 1 of the present invention;

[0028] Figure 7 Schematic diagram of the overall structure of the first transmission mechanism of the present invention in flight state;

[0029] Figure 8 for Figure 7 A magnified schematic diagram of point B in the middle;

[0030] Figure 9 Schematic diagram of the overall structure of the first transmission mechanism of the present invention in the deicing state;

[0031] Figure 10 It is a schematic diagram of the overall structure of the present invention in the deicing state;

[0032] Figure 11 Schematic diagram of the overall structure of the second transmission mechanism in Example 2 of the present invention.

[0033] In the figure: 1. Frame, 2. Air outlet, 3. Heating device, 4. Housing, 5. Transmission rod, 6. Arm, 7. Connecting rod, 8. Sleeve, 9. Motor A, 10. Blade, 11. Telescopic member, 12. Articulated rod, 13. Connecting plate, 14. Fixing member, 15. Ring body, 16. Fixing hole, 17. Articulated shaft, 18. Connecting shaft, 19. Second rack, 20. Driven gear, 21. Second gear, 22. Connecting hole, 23. Vertical plate, 24. First rack, 25. Motor B, 26. First gear, 27. Third rack, 28. Third gear, 29. Ball screw, 30. Telescopic section. DETAILED DESCRIPTION

[0034] The following will refer to the attached Figures 1 to 11 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0035] Example 1

[0036] A de-icing device for drone blades, as shown in the attached Figure 1As shown, it includes a frame 1. In this embodiment, the frame 1 includes two upper and lower plates. A main controller can be set between the two plates. An arm 6 is provided on the frame 1, and a motor A9 is provided on the arm 6. The motor A9 is provided with a blade 10. The main controller controls the rotation of the motor A9, thereby driving the blade 10 to rotate. Due to the shape of the blade 10 itself, a downward airflow is generated as it rotates, thereby generating lift, allowing the drone to fly. In addition, the active controller is also connected to a corresponding shooting mechanism, etc. This part is existing technology and will not be described in detail here.

[0037] As attached Figure 1 , Attachment Figure 10 As shown, the motor A9 is slidingly set on the arm 6 and is provided with a first control mechanism to control the motor A9 to approach or move away from the frame 1. The motor A9 is connected to the blade 10 through a telescopic member 11 and can adjust the height of the blade 10. The blade 10 is hinged and is provided with a second control mechanism to control the blade 10 to be retracted or unfolded downward. A heating device 3 is provided on the frame 1, and the heating device 3 includes a hot air blower and an air outlet 2 that is connected to the hot air blower and faces each blade 10. In addition, it should be noted that the motor A9 can also be connected to the arm 6 through a telescopic structure to achieve a sliding effect through the telescopic mechanism.

[0038] Working principle: When the drone is in flight, refer to the attached Figure 1 By controlling the motor A9 and the blades 10 away from the frame 1 through the first control mechanism, the blades 10 can be positioned around the entire UAV, generating lift from the bottom of the UAV, with reasonable force, lowering the height of the blades 10 through the telescopic member 11, which can reduce the length of the telescopic member 11, thereby reducing the friction during flight, and controlling the blades 10 to unfold through the second control mechanism, so that the flight can be smoothly rotated; when the blades 10 are in the de-icing state, refer to the attached Figure 10 , the first control mechanism controls the motor A9 and the blades 10 to approach the frame 1 and the heating device 3, reduces the distance between the blades 10 and the heating device 3, and makes the blades 10 approach the air outlet 2. When hot air is generated, the hot air can approach the blades 10 in the first time to avoid heat loss on the way. The height of the blades 10 is raised by the telescopic member 11, so that the second control mechanism can smoothly control the blades 10 to be stored downward, and turn on the heating device 3. When the motor A9 is started, it drives the blades 10 to rotate, and the blades 10 generate an inward airflow, which can absorb the hot air in the first time to heat up and de-ice. It should also be noted that in the actual process, in order to ensure the smooth flight of the drone, the shape and rotation direction of the blades 10 in the drone will be different. For example, when rotating clockwise, a downward airflow is generated. After storage, the clockwise rotation generates an inward airflow, and the counterclockwise rotation generates a downward airflow. After storage, the counterclockwise rotation generates an inward airflow, which can all operate normally during de-icing.

[0039] When deicing, this embodiment reduces the distance between the blades 10 and the air outlet 2, so that the generated hot air flows quickly to the blades 10. Compared with the prior art, it can avoid the heat loss of the hot air on the way to the blades 10. At the same time, the blades 10 are rotated downward and stored, and the rotation of the blades 10 is controlled to make the blades 10 generate an inward airflow, and the hot air on the surrounding side is sucked into the blade 10 area, so as to make full use of the hot air to heat the blades 10 and achieve the effect of deicing. The operation is simple and the deicing effect is good. When the present invention heats the blades 10 by hot air to de-ice, the rotation of the blades 10 themselves can increase the friction between the hot air and the blades 10, increase the flow rate of the hot air passing through the blades 10, and effectively improve the deicing effect. In the present invention, the blades 10 are connected through the telescopic parts 11 is connected to the motor A9. During de-icing, the telescopic part 11 is extended to facilitate the downward rotation and storage of the blades 10. When the UAV is flying, the telescopic part 11 is contracted to reduce the surface area of the device, reduce the friction during flight, and facilitate flight. When the UAV is flying, the heating device 3 can also be turned on to play a certain anti-icing role, and to assist in heating the surface of the UAV to avoid icing during flight. The heating device 3 of the present invention is separately arranged from the blades 10, and does not require additional power supply. It is driven by the UAV's own electricity, has a simple structure, and is easy to operate. Compared with the traditional structure in which a heating wire is arranged in the blades 10, when the blades 10 are damaged, it is convenient to directly replace the blades 10, and it is convenient to replace and repair each part of the structure separately.

[0040] As attached Figure 1 、 Figure 7 、 Figure 8 、 Figure 9 As shown, in this embodiment, a sleeve 8 is slidingly provided on the arm 6, and a motor A9 is arranged on the sleeve 8. The first control mechanism includes a shell 4 arranged on the frame 1. Specifically, a connecting hole 22 is provided on the frame 1, and the shell 4 and the frame 1 are detachably connected through the connecting hole 22 to facilitate internal maintenance. A transmission rod 5 is passed through the shell 4. The number of transmission rods 5 corresponds to the blades 10, and is connected to the corresponding sleeve 8. Specifically, a connecting rod 7 is provided between the transmission rod 5 and the sleeve 8. The transmission rod 5 is located in the shell 4 and is provided with a first rack 24. The shell 4 is also provided with a motor B25. The motor B25 is connected to the main controller and is controlled by the main controller. The motor B25 is connected to the first gear 26. The axis of the first gear 26 is in the vertical direction and is connected to the first rack 24 through the first gear 26.

[0041] Working principle: By controlling the rotation of motor B25, the first gear 26 is driven to rotate, and then the first rack 24, transmission rod 5, sleeve 8, motor A9 and blade 10 are driven to move in sequence, thereby controlling the distance between blade 10 and heating device 3.

[0042] Specifically, in this embodiment, the frame 1 is symmetrically provided with four groups of arms 6, motor A9 and blades 10. Among the four first racks 24 in the first control mechanism, two relative heights are equivalent, that is, the front and rear two heights are equivalent, and the left and right two heights are equivalent. Specifically, the inner ends of the front and rear transmission rods 5 are provided with a vertical plate 23, and the first racks 24 are connected through the vertical plate 23, so that the front and rear first racks 24 are higher than the left and right first racks 24. The motor B25 is connected to the upper and lower first gears 26. The first gear 26 is meshed with the corresponding two first racks 24, that is, the upper first gear 26 is meshed with the front and rear first racks 24, and the lower first gear 26 is meshed with the left and right first racks 24. When the motor B25 rotates, it can simultaneously drive the four first racks 24 to move inward or outward, and then drive the first rack 24, transmission rod 5, sleeve 8, motor A9 and blades 10 to move in turn, thereby realizing simultaneous control of the distance between the four groups of blades 10 and the heating device 3.

[0043] As attached Figure 1 、 Figure 3 、 Figure 9 、 Figure 10 As shown, in this embodiment, the telescopic member 11 is a multi-layer sleeve structure, and a ring body 15 is rotatably sleeved on the top. A hinged rod 12 is hinged between the ring body 15 and the arm 6. When the telescopic member 11 approaches the frame 1, the angle of the hinged rod 12 changes, thereby driving the telescopic member 11 to extend.

[0044] As attached Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the second transmission mechanism includes a connecting plate 13 fixedly arranged on the top of the telescopic member 11, and the blade 10 is hinged to the end of the connecting plate 13 through a hinge shaft 17. The connecting plate 13 is a hollow structure, and a second rack 19 is slidingly provided inside. The second rack 19 is transmission-connected to the hinge shaft 17 of the blade 10. The second rack 19 and the connecting plate 13 are provided with an adapting fixing hole 16, and are fixed with a corresponding fixing member 14, which can be specifically fixed by a threaded hole and a threaded pin.

[0045] Working principle: When the blade 10 rotates, it drives the hinge shaft 17 to rotate, and the hinge shaft 17 drives the second rack 19 to slide, changing the relative position of the second rack 19 and the connecting plate 13. By using the fixing part 14 to fix the different fixing holes 16, the angle of the blade 10 can be fixed, thereby realizing the control of the deployment and storage of the blade 10.

[0046] Specifically, in this embodiment, the hinge shaft 17 is connected to the second gear 21, and the second gear 21 is meshed with the driven gear 20. The driven gear 20 is arranged on the connecting plate 13 through the connecting shaft 18, and the driven gear 20 is larger than the second gear 21. The driven gear 20 is meshed with the second rack 19, which can avoid the end of the connecting plate 13 from blocking the second rack 19, so that the second rack 19 can smoothly drive the second gear 21 to rotate; and in this embodiment, the two second racks 19 of a group of two blades 10 are arranged below the driven gear 20, and the two second racks 19 are sleeved near one end. Each second rack 19 is provided with two fixing holes 16, and the connecting plate 13 is provided with a fixing hole 16. When the blade 10 is in different states, the different fixing holes 16 on the two second racks 19 correspond to the fixing holes 16 on the connecting plate 13. When operating and fixing, it is only necessary to rotate the blade 10 first, and then fix the two second racks 19 at a time through the fixing member 14, which is simple to operate.

[0047] Example 2

[0048] As attached Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 11 As shown, the difference between this embodiment and the first embodiment is that the second transmission mechanism includes a connecting plate 13 fixedly arranged on the top of the telescopic member 11, and the blade 10 is hinged at the end of the connecting plate 13. The connecting plate 13 is a hollow structure and is provided with a second rack 19 inside. The second rack 19 is transmission-connected to the hinge shaft 17 of the blade 10, and the second rack 19 is connected to the third rack 27, and the third rack 27 is meshed with the third gear 28. The third gear 28 is rotatably set on the connecting plate 13, and the axis of the third gear 28 is in the vertical direction, and the internal thread of the third gear 28 is penetrated by a ball screw 29 in the vertical direction. The bottom of the ball screw 29 passes through the connecting plate 13 and the top of the telescopic member 11, and is connected to the bottom of the telescopic member 11.

[0049] Working principle: When the telescopic member 11 extends, it drives the connecting plate 13 to rise, and then drives the third gear 28 to rise. When the third gear 28 rises, under the action of the ball screw 29, it rotates relative to the ball screw 29, thereby driving the third rack 27 to move, and then driving the blade 10 to rotate. That is, when the blade 10 rises, the blade 10 is automatically controlled to rotate downward and stored, and when it is lowered, the blade 10 is automatically controlled to unfold.

[0050] When deicing, you only need to control motor B25 to adjust the position and state of the blade 10 at the same time, move the blade 10 close to the air outlet 2 and put it in the storage state, and then you only need to control motor A9 and heating device 3 to de-ice. The operation is simple and convenient.

[0051] As attached Figure 11 As shown, in this embodiment, a telescopic section 30 is provided at the bottom of the ball screw 29, which is connected to the bottom of the telescopic member 11 through the telescopic section 30. When the telescopic member 11 begins to extend, the telescopic section 30 extends accordingly, and the positions of the thread grooves of the third gear 28 and the ball screw 29 remain relatively unchanged. When the telescopic section 30 is extended to the longest and cannot continue to extend, the telescopic member 11 continues to extend, and the height of the thread groove of the ball screw 29 remains unchanged. The third gear 28 and the ball screw 29 move relative to each other, rotating while rising, thereby driving the third rack 27 to move, and then driving the blade 10 to rotate.

[0052] This embodiment can always set the thread groove portion of the ball screw 29 inside the connecting plate 13, which not only protects the thread groove portion, but also when the telescopic member 11 contracts, the telescopic section 30 is also in a contracted state and will not protrude outside the connecting plate 13. It is aesthetically pleasing and can also reduce resistance when the drone is flying.

[0053] It should be noted that, in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that a device or component must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0055] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A deicing device for a drone blade, comprising a frame (1), an arm (6) being provided on the frame (1), a motor A (9) being provided on the arm (6), and a blade (10) being provided on the motor A (9), wherein: The motor A (9) is slidably arranged on the machine arm (6) and is provided with a first control mechanism for controlling the motor A (9) to approach or move away from the frame (1). The motor A (9) is connected to the propeller (10) via a telescopic member (11) and is capable of adjusting the height of the propeller (10). The propeller (10) is hingedly arranged and is provided with a second control mechanism for controlling the propeller (10) to be retracted or unfolded downward. The frame (1) is provided with a heating device (3), and the heating device (3) includes a hot air blower and an air outlet (2) connected to the hot air blower and facing each propeller (10). When the UAV is flying, the motor A (9) and the blades (10) are controlled by the first control mechanism to move away from the frame (1), the height of the blades (10) is lowered by the telescopic member (11), and the blades (10) are controlled to unfold by the second control mechanism. When the blades (10) are de-iced, the motor A (9) and the blades (10) are controlled by the first control mechanism to move closer to the frame (1) and the heating device (3), the height of the blades (10) is raised by the telescopic member (11), and the blades (10) are controlled by the second control mechanism to be retracted downward, and the heating device (3) is turned on. When the motor A (9) is started, the blades (10) are driven to rotate, and the blades (10) generate an inward airflow to absorb hot air.

2. The de-icing device for drone blades according to claim 1, characterized in that: A sliding sleeve (8) is slidably provided on the machine arm (6), and a motor A (9) is provided on the sliding sleeve (8). The first control mechanism includes a housing (4) provided on the frame (1), and a transmission rod (5) is passed through the housing (4). The number of the transmission rods (5) corresponds to the number of the blades (10) and is connected to the corresponding sliding sleeve (8). The transmission rod (5) is located in the housing (4) and is provided with a first rack (24). The housing (4) is also provided with a motor B (25), and the motor B (25) is connected to a first gear (26) and is connected to the first rack (24) through the first gear (26).

3. The de-icing device for drone blades according to claim 2, characterized in that: The frame (1) is symmetrically provided with four sets of arms (6), motors A (9) and blades (10); two of the four first racks (24) in the first control mechanism are at the same height; the motor B (25) is connected to two first gears (26); the first gears (26) are meshed and connected with the corresponding two first racks (24); when the motor B (25) rotates, the four first racks (24) are simultaneously driven to move inward or outward.

4. The de-icing device for drone blades according to claim 1, characterized in that: A ring body (15) is rotatably sleeved on the top of the telescopic member (11), and a hinged rod (12) is hingedly connected between the ring body (15) and the machine arm (6). When the telescopic member (11) approaches the machine frame (1), the hinged rod (12) drives the telescopic member (11) to extend.

5. The de-icing device for drone blades according to claim 1, characterized in that: The second transmission mechanism includes a connecting plate (13) fixedly arranged on the top of the telescopic member (11), the blade (10) is hinged at the end of the connecting plate (13), the connecting plate (13) is hollow in structure, and a second rack (19) is slidably provided inside, the second rack (19) is transmission-connected to the hinge shaft (17) of the blade (10), and the second rack (19) and the connecting plate (13) are provided with matching fixing holes (16) and are fixed with corresponding fixing members (14).

6. The de-icing device for drone blades according to claim 5, characterized in that: The hinge shaft (17) is connected to a second gear (21), the second gear (21) is meshedly connected to a driven gear (20), the driven gear (20) is arranged on the connecting plate (13), and the driven gear (20) is meshedly connected to the second rack (19).

7. The de-icing device for drone blades according to claim 1, characterized in that: The second transmission mechanism includes a connecting plate (13) fixedly arranged on the top of the telescopic member (11), the blade (10) is hinged at the end of the connecting plate (13), the connecting plate (13) is hollow in structure, and a second rack (19) is provided inside, the second rack (19) is transmission-connected to the hinge shaft (17) of the blade (10), and the second rack (19) is connected to a third rack (27), the third rack (27) is meshedly connected to a third gear (28), the third gear (28) is rotatably arranged on the connecting plate (13), and a ball screw (29) is threaded through the inner thread of the third gear (28), and the bottom of the ball screw (29) is connected to the bottom of the telescopic member (11).

8. The de-icing device for drone blades according to claim 7, characterized in that: A telescopic section (30) is provided at the bottom of the ball screw (29), and is connected to the bottom of the telescopic member (11) via the telescopic section (30).

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