Deicing device for unmanned aerial vehicle paddle

Abstract

The invention relates to the field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle paddle deicing device which solves the problems of poor temperature rising effect and troublesome operation and comprises a rack, an arm is arranged on the rack, a motor A is arranged on the arm, a paddle is arranged on the motor A, and the motor A is slidably arranged on the arm and provided with a first control mechanism. The motor A is controlled to be close to or far away from the rack, the motor A is connected with the paddles through telescopic pieces, the heights of the paddles can be adjusted, the paddles are arranged in a hinged mode and provided with a second control mechanism, the paddles are controlled to be folded or unfolded downwards, a heating device is arranged on the rack, and the heating device comprises an air heater and an air outlet which is communicated with the air heater and faces all the paddles. During deicing, generated hot air quickly flows to the blades, the blades generate inward airflow, the hot air on the peripheral side is sucked into the blade area, the hot air is fully utilized, the blades are heated, the deicing effect is achieved, operation is easy, and the deicing effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a deicing device for unmanned aerial vehicle 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, propeller blades and a main controller. The main controller drives the motor and propeller blades to rotate, causing the propeller blades to generate downward airflow, thereby generating lift and making the drone fly.

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

[0004] Therefore, the present invention provides a deicing 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 UAV blades, and the problem to be solved is: to provide a deicing device for UAV 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: A deicing device for a propeller blade of a drone comprises a frame, an arm is arranged on the frame, a motor A is arranged on the arm, a propeller blade is arranged 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 propeller blade through a telescopic member, and the height of the propeller blade can be adjusted, the propeller blade is hingedly arranged, and a second control mechanism is provided to control the propeller blade to be stored downward or unfolded, and a heating device is provided on the frame, and the heating device comprises a hot air blower and an air outlet communicated with the hot air blower and facing each propeller blade; When the UAV is flying, the first control mechanism controls the motor A and the blades to move away from the frame, the telescopic member 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 close to the frame and the heating device, the telescopic member raises the blade height, the second control mechanism controls the blades to be retracted downward, and the heating device is turned on. When the motor A starts, it drives the blades to rotate, and the blades generate an inward airflow to absorb hot air.

[0007] Preferably, a sliding sleeve is slidably provided on the arm, and a motor A is arranged on the sliding sleeve. The first control mechanism includes a shell arranged on the frame, and a transmission rod is passed through the shell. The number of the transmission rods corresponds to the blades, and the transmission rods are connected to the corresponding sliding sleeves. The transmission rod is located in the shell and has a first rack. The shell also has a motor B, and the motor B is connected to a first gear, and is connected to the first rack through the first gear.

[0008] Preferably, the frame is symmetrically provided with four groups of arms, motor A and blades, and two of the four first racks in the first control mechanism are relatively at equivalent heights. The motor B is connected to two first gears, and the first gears are meshedly connected 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.

[0009] 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 telescopic member is driven to extend through the hinged rod.

[0010] 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 slidably provided inside, the second rack is transmission-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.

[0011] Preferably, the hinge shaft is connected to a second gear, the second gear is meshingly connected to a driven gear, the driven gear is arranged on the connecting plate, and the driven gear is meshingly connected to the second rack.

[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 provided inside, the second rack is transmission-connected to the hinge shaft of the blade, and the second rack is connected to a third rack, the third rack is meshingly connected to a 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.

[0013] Preferably, a telescopic section is provided at the bottom of the ball screw, and is connected to the bottom of the telescopic member via the telescopic section.

[0014] The beneficial effects of the present invention are: 1. When deicing, the present invention can move the blades closer to the air outlet, thereby reducing the distance between the blades and the air outlet, allowing the generated hot air to flow to the blades, and at the same time, the blades are rotated downward and stored, and the rotation of the blades is controlled to 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 effect of deicing. The present invention is simple to operate and has a good deicing effect.

[0015] 2. When the present invention uses hot air to heat and de-ice the blades, 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.

[0016] 3. In the present invention, the propeller blades are connected to the motor A through a telescopic member. When deicing, the telescopic member is extended to facilitate the propeller blades to rotate downward and be stored. When the UAV is flying, the telescopic member is contracted to reduce the surface area of ​​the device, reduce the friction during flight, and facilitate flight.

[0017] 4. When the UAV is flying, the heating device of the present invention can also be turned on to play a certain anti-icing role.

[0018] 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention in a flying state; Figure 2 Schematic diagram of the connection relationship between the motor A and the blade 10 in the present invention; Figure 3 It is a structural schematic diagram of the telescopic member in the present invention; Figure 4 Schematic diagram of the overall structure of the second transmission mechanism in the first embodiment of the present invention; Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle; Figure 6This is a control principle diagram of the second transmission mechanism in Embodiment 1 of the present invention; Figure 7 It is a schematic diagram of the overall structure of the first transmission mechanism of the present invention in a flight state; Figure 8 for Figure 7 The enlarged schematic diagram of point B in the middle; Fig. 9 It is a schematic diagram of the overall structure of the first transmission mechanism of the present invention in the deicing state; Fig.10 It is a schematic diagram of the overall structure of the present invention in the deicing state; Fig.11 Schematic diagram of the overall structure of the second transmission mechanism in Embodiment 2 of the present invention.

[0020] In the figure: 1. frame, 2. air outlet, 3. heating device, 4. shell, 5. transmission rod, 6. machine arm, 7. connecting rod, 8. sliding sleeve, 9. motor A, 10. blade, 11. telescopic member, 12. hinge rod, 13. connecting plate, 14. fixing member, 15. ring body, 16. fixing hole, 17. hinge 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

[0021] 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 protection scope of the present invention.

[0022] Embodiment 1 A deicing device for drone blades, as shown in the attached Figure 1 As shown, it includes a frame 1. In this embodiment, the frame 1 includes two upper and lower plates. A main controller can be arranged between the two plates. An arm 6 is arranged on the frame 1. A motor A9 is arranged on the arm 6. A blade 10 is arranged on the motor A9. The motor A9 is controlled to rotate by the main controller, 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 to enable the drone to fly. In addition, the active controller is also connected to a corresponding shooting mechanism, etc. This part is a prior art and will not be described in detail here.

[0023] As attached Figure 1 , Attachment Fig.10As shown, the motor A9 is slidably 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 the telescopic member 11, and the height of the blade 10 can be adjusted. The blade 10 is hingedly set, and is provided with a second control mechanism to control the blade 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 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, and the sliding effect is achieved through the telescopic mechanism.

[0024] Working principle: When the drone is in flight, refer to the attached Figure 1 , the motor A9 and the blade 10 are controlled by the first control mechanism to be away from the frame 1, so that the blade 10 can be located around the entire UAV, and lift is generated from the bottom of the UAV around the periphery, and the force is reasonable. The height of the blade 10 is lowered by the telescopic member 11, and the length of the telescopic member 11 can be reduced, thereby reducing the friction during the flight. The blade 10 is controlled to unfold by the second control mechanism, and can rotate and fly smoothly; when the blade 10 is in the de-icing state, refer to the attached Fig.10 , the first control mechanism controls the motor A9 and the blade 10 to approach the frame 1 and the heating device 3, reduces the distance between the blade 10 and the heating device 3, and makes the blade 10 approach the air outlet 2. When hot air is generated, the hot air can approach the blade 10 in the first time to avoid heat loss on the way. The height of the blade 10 is raised by the telescopic member 11, so that the second control mechanism can smoothly control the blade 10 to be stored downward, and turn on the heating device 3. When the motor A9 is started, it drives the blade 10 to rotate, and the blade 10 generates an inward airflow, which can absorb the hot air for heating and deicing in the first time; 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, such as clockwise rotation to generate a downward airflow, after storage, clockwise rotation to generate an inward airflow, counterclockwise rotation to generate a downward airflow, after storage, counterclockwise rotation to generate an inward airflow, all of which can operate normally during deicing.

[0025] During de-icing, the present embodiment reduces the distance between the blade 10 and the air outlet 2, so that the generated hot air flows quickly to the blade 10. Compared with the prior art, it can avoid the heat loss of the hot air on the way to the blade 10. At the same time, the blade 10 is rotated downward and stored, and the rotation of the blade 10 is controlled to generate an inward airflow from the blade 10, and the hot air on the surrounding side is sucked into the blade 10 area, so that the hot air is fully utilized to heat the blade 10 to achieve the de-icing effect. The operation is simple and the de-icing effect is good. When the present invention heats the blade 10 for de-icing by hot air, the rotation of the blade 10 itself can increase the friction between the hot air and the blade 10, increase the flow rate of the hot air passing through the blade 10, and effectively improve the de-icing effect. In the present invention, the blade 10 is connected through the telescopic part 11 is connected to the motor A9. During deicing, the telescopic part 11 is extended to facilitate the blades 10 to rotate downward and be stored. 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 of the present invention 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 between the blades 10, and no additional power supply is required. 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.

[0026] As attached Figure 1 , Figure 7 , Figure 8 , Fig. 9 As shown, in this embodiment, a sleeve 8 is slidably 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, which is convenient for internal maintenance. A transmission rod 5 is passed through the shell 4. The number of the transmission rods 5 corresponds to the blades 10, and they are connected to the corresponding sleeves 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, which is connected to the main controller and controlled by the main controller. The motor B25 is connected to the first gear 26, and the axis of the first gear 26 is along the vertical direction, and is connected to the first rack 24 through the first gear 26.

[0027] Working principle: By controlling the rotation of the motor B25, the first gear 26 is driven to rotate, and then the first rack 24, the transmission rod 5, the sleeve 8, the motor A9 and the blade 10 are driven to move in sequence, so as to control the distance between the blade 10 and the heating device 3.

[0028] 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 equal, that is, the front and rear two heights are equal, and the left and right two heights are equal. 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 by 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 with upper and lower first gears 26. The first gear 26 is meshed and connected with the corresponding two first racks 24, that is, the upper first gear 26 is meshed and connected with the front and rear first racks 24, and the lower first gear 26 is meshed and connected with the left and right first racks 24. When the motor B25 rotates, it can drive the four first racks 24 to move inward or outward at the same time, and then drive the first rack 24, the transmission rod 5, the sliding sleeve 8, the motor A9 and the blades 10 to move in turn, so as to realize the simultaneous control of the distance between the four groups of blades 10 and the heating device 3.

[0029] As attached Figure 1 , Figure 3 , Fig. 9 , Fig.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, and 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.

[0030] 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 at 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 slidably provided inside. The second rack 19 is transmission-connected with the hinge shaft 17 of the blade 10, and 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.

[0031] Working principle: When the blade 10 rotates, the hinge shaft 17 is driven to rotate, and the hinge shaft 17 drives the second rack 19 to slide, thereby 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.

[0032] 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 blocking the second rack 19, so that the second rack 19 can smoothly drive the second gear 21 to rotate; and in this embodiment, 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 the operation is fixed, it is only necessary to rotate the blade 10 first, and then fix the two second racks 19 at one time through the fixing member 14, which is simple to operate.

[0033] Embodiment 2 As attached Figure 2 , Figure 4 , Figure 5 , Figure 6 , Fig.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, the blade 10 is hinged at the end of the connecting plate 13, the connecting plate 13 is a hollow 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 meshingly connected to a third gear 28, the third gear 28 is rotatably arranged on the connecting plate 13, the axis of the third gear 28 is along the vertical direction, and the internal thread of the third gear 28 is penetrated by a ball screw 29 along 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.

[0034] Working principle: when the telescopic member 11 is extended, the connecting plate 13 is driven to rise, and then the third gear 28 is driven to rise. When the third gear 28 is raised, 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 the propeller 10 can be driven to rotate. That is, when the propeller 10 is raised, the propeller 10 is automatically controlled to rotate downward and stored, and when it is lowered, the propeller 10 is automatically controlled to unfold.

[0035] When deicing, you only need to control the 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 the motor A9 and the heating device 3 to de-ice, which is simple and convenient to operate.

[0036] As attached Fig.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 just 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.

[0037] In this embodiment, the thread groove portion of the ball screw 29 can always be set in the connecting plate 13, which not only protects the thread groove portion, but also when the telescopic member 11 is contracted, 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.

[0038] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A deicing device for a propeller blade of an unmanned aerial vehicle, 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 propeller 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 blade (10) via a telescopic member (11) and is capable of adjusting the height of the propeller blade (10); the propeller blade (10) is hingedly arranged and is provided with a second control mechanism for controlling the propeller blade (10) to be folded or unfolded downward; the frame (1) is provided with a heating device (3), the heating device (3) comprising a hot air blower and an air outlet (2) which is in communication with the hot air blower and faces each propeller blade (10); When the unmanned aerial vehicle is flying, the motor A (9) and the propeller blades (10) are controlled by the first control mechanism to move away from the frame (1), the height of the propeller blades (10) is lowered by the telescopic member (11), and the propeller blades (10) are controlled by the second control mechanism to unfold. When deicing the propeller blades (10), the motor A (9) and the propeller 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 propeller blades (10) is raised by the telescopic member (11), and the propeller 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 propeller blades (10) are driven to rotate, and the propeller blades (10) generate inward airflow to absorb hot air.

2. The deicing device for drone blades according to claim 1, characterized in that: A sleeve (8) is slidably provided on the machine arm (6), a motor A (9) is provided on the sleeve (8), the first control mechanism comprises a housing (4) provided on the frame (1), 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 the transmission rods (5) are connected to the corresponding sleeves (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), the motor B (25) is connected to a first gear (26), and is connected to the first rack (24) via the first gear (26).

3. The deicing 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 meshedly connected with the corresponding two first racks (24); when the motor B (25) rotates, the four first racks (24) are driven to move inward or outward at the same time.

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

6. The deicing 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 meshingly connected to a driven gear (20), the driven gear (20) is arranged on the connecting plate (13), and the driven gear (20) is meshingly connected to the second rack (19).

7. The deicing device for drone blades according to claim 1, characterized in that: The second transmission mechanism comprises a connecting plate (13) fixedly arranged on the top of the telescopic member (11), the blade (10) being hingedly connected to the end of the connecting plate (13), the connecting plate (13) being of a hollow structure and provided with a second rack (19) inside, the second rack (19) being transmission-connected to a hinge shaft (17) of the blade (10), the second rack (19) being connected to a third rack (27), the third rack (27) being meshingly connected to a third gear (28), the third gear (28) being rotatably arranged on the connecting plate (13), the third gear (28) being internally threaded with a ball screw (29), the bottom of the ball screw (29) being connected to the bottom of the telescopic member (11).

8. The deicing 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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