Mooring lighting unmanned aerial vehicle

Abstract

The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to a mooring lighting unmanned aerial vehicle which comprises an unmanned aerial vehicle body and a ground power source, the unmanned aerial vehicle body and the ground power source are connected through a mooring cable, and the ground power source provides hovering and lighting service for the unmanned aerial vehicle body through the mooring cable. The unmanned aerial vehicle body is composed of a vehicle body box, vehicle arms and propellers, the vehicle arms are arranged on the periphery of the vehicle body box, the propellers are arranged on the edges of the vehicle arms, a plurality of sets of supporting leg frames are arranged on the lower end face of the vehicle body box, and an electric connector is arranged on the lower end face of the vehicle body box. A protection mechanism is arranged on the lower end face of the machine body box and located at the position corresponding to the electric connector. The protection mechanism protects the connecting position of the electric connector and the mooring cable of the body box, the problem that water enters the connecting position of the mooring cable and the electric connector in cloudy and rainy days can be avoided, and the normal lighting effect of the unmanned aerial vehicle body is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of unmanned aerial vehicles, and specifically relates to a tethered lighting unmanned aerial vehicle. Background Art

[0002] A tethered lighting unmanned aerial vehicle is an unmanned aerial vehicle system that is connected to a ground power source or control system through a tethered cable to achieve long-term hovering in the air and provide lighting services.

[0003] In the event of natural disasters such as earthquakes and floods, traditional lighting facilities may be damaged. Tethered lighting unmanned aerial vehicles can be quickly deployed to provide long-term and large-scale lighting support for the rescue site, facilitating the smooth progress of rescue work. In scenarios such as large event security and traffic emergency monitoring, they can also provide high-altitude perspective support and can be used for lighting construction sites at night to ensure construction progress and safety.

[0004] Since tethered lighting unmanned aerial vehicles are used in many scenarios, and during use, the tethered cable and the electrical connectors of the unmanned aerial vehicle itself are generally exposed. In rainy weather, water may enter the connection between the tethered cable and the electrical connector, affecting the lighting effect of the unmanned aerial vehicle itself. Moreover, in strong wind weather, it will also affect the contact between the tethered cable and the electrical connector. That is, under the influence of wind, there will be problems of poor contact.

[0005] Therefore, the present invention provides a tethered lighting unmanned aerial vehicle. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A tethered lighting unmanned aerial vehicle of the present invention includes an unmanned aerial vehicle body and a ground power source. The unmanned aerial vehicle body and the ground power source are connected through a tethered cable. The ground power source provides hovering and lighting services for the unmanned aerial vehicle body through the tethered cable. The unmanned aerial vehicle body is composed of a body box, arms, and propellers. The arms are arranged around the body box, and the propellers are arranged at the edges of each arm. A plurality of support leg frames are arranged on the lower end surface of the body box. An electrical connector is arranged on the lower end surface of the body box. A protection mechanism is arranged at a position corresponding to the electrical connector on the lower end surface of the body box for protecting the electrical connector. The plurality of support leg frames are designed to be spaced apart from each other; It should be noted that the unmanned aerial vehicle body is controlled by an external controller, and a lighting lamp is arranged on the lower end surface of the body box.

[0008] Preferably, an embedding groove is formed at the edge of the lower end surface of the body box, the electrical connector is arranged inside the embedding groove, the protection mechanism includes a sealing baffle slidably arranged inside the embedding groove, the shape of the sealing baffle matches the shape of the embedding groove, and the sealing baffle can move up and down along the inner wall of the embedding groove.

[0009] Preferably, two fixing frames are fixedly connected to the lower end surface of the body box, and the two fixing frames are symmetrically designed with respect to the body box. A rotating horizontal shaft is rotatably connected to the surface of each fixing frame, a driven gear is fixedly installed on the outer peripheral surface of each rotating horizontal shaft, a driving unit is arranged on the lower end surface of the body box, the driving unit is used to drive the driven gear to rotate, and multiple support leg frames are installed on the outer peripheral surface of the rotating horizontal shaft.

[0010] Preferably, the driving unit includes an electric telescopic rod, the electric telescopic rod is fixedly installed on the lower end surface of the body box, a push plate is fixedly installed at the telescopic end of the electric telescopic rod, two wedge-shaped blocks are installed on the side wall of the push plate, two ratchet plates are slidably arranged below the body box, and the two ratchet plates are respectively meshed with the two driven gears, and the inclined surface of the wedge-shaped block contacts one end surface of the ratchet plate; during operation, when it is necessary to open the support leg frames, at this time, control the movement of the telescopic end of the electric telescopic rod, so that the telescopic end drives the push plate to move, the push plate drives the two wedge-shaped blocks to move, and during the movement of the two wedge-shaped blocks, their inclined surfaces will contact the end surface of the ratchet plate and squeeze the end of the ratchet plate, so that the ratchet plate will move a certain distance, the ratchet plate will drive the driven gear meshed with it to rotate, the driven gear will drive the rotating horizontal shaft to rotate, and the rotating horizontal shaft will drive the support leg frame to rotate, so that the corresponding two support leg frames will open, which is convenient for the subsequent landing of the UAV body and ensures its use safety.

[0011] Preferably, multiple limiting support frames are fixedly installed below the body box, a limiting groove is formed in the side wall of the ratchet plate, the side of the limiting support frame away from the body box is slidably arranged inside the limiting groove, and a limiting spring is fixedly installed on the inner wall of the limiting groove, and one side of the limiting spring away from the groove wall of the limiting groove is connected to the side wall of the limiting support frame.

[0012] Preferably, a limiting stop rod is fixedly connected to the lower end surface of the body box and on the side of each support leg frame. The limiting stop rod is designed in an inclined manner, and the top end of the limiting stop rod contacts the side wall of the support leg frame; during operation, the limiting stop rod is designed, that is, when the two support leg frames open, the limiting stop rod will give a certain limiting support force, that is, adjust the opening angle of the support leg frame, so that this UAV body is suitable for a variety of scenarios, such as flat ground or other uneven ground for support.

[0013] Preferably, telescopic elastic rods are installed around the inner wall of the embedding groove. A telescopic spring is sleeved on the outer peripheral surface of each telescopic elastic rod. A sealing frame is arranged on the side wall of the sealing baffle. A rubber sleeve is sleeved on the outer peripheral surface of the sealing frame. A linkage unit is arranged on the surface of one group of support leg frames.

[0014] Preferably, the linkage unit includes a pressing frame fixedly installed on the side wall of one group of support leg frames. A circular pressing column is installed on the side wall of the sealing baffle close to the pressing frame. The end of the circular pressing column is provided with a rounded corner. During operation, when the support leg frames rotate in a trend of approaching each other, one group of support leg frames will drive the pressing frame to rotate simultaneously. During the rotation of the pressing frame, it will contact and squeeze the circular pressing column, causing the circular pressing column to drive the sealing baffle to move. In this way, the sealing baffle can continue the above actions and protect the mooring cable.

[0015] Preferably, an arc-shaped clamping sleeve one is installed on the side wall of the sealing baffle. An arc-shaped clamping sleeve two is arranged at the corresponding position of the groove wall of the embedding groove with respect to the arc-shaped clamping sleeve one.

[0016] Preferably, a rectangular groove adapted to the sealing baffle is formed in the groove wall of the embedding groove. Rubber sleeves are sleeved on the surfaces of the arc-shaped clamping sleeve one and the arc-shaped clamping sleeve two. With such a design, it is convenient to protect the mooring cable and the electrical connector.

[0017] The beneficial effects of the present invention are as follows: 1. For the tethered lighting drone of the present invention, by protecting the connection between the electrical connector of the fuselage box and the mooring cable in the protection mechanism, it can avoid the problem of water ingress at the connection between the mooring cable and the electrical connector in rainy weather, ensuring the normal lighting effect of the drone fuselage.

[0018] 2. For the tethered lighting drone of the present invention, since the connection is located inside the embedding groove, and at the same time the drone fuselage is at high altitude and is performing lighting work, the sealing baffle completely covers the entire embedding groove. Such a design has two advantages. First, it can prevent the connection between the electrical connector and the mooring cable from being exposed outside, avoiding the problem that external rainwater enters and affects the lifting and lighting of the drone fuselage itself. Second, under the pressure of the sealing baffle on the mooring cable, it can prevent the connection between the mooring cable and the electrical connector from falling off when the mooring cable is at high altitude and is affected by strong wind, maintaining its clamping effect with the electrical connector.

[0019] 3. For the tethered lighting drone of the present invention, by driving the arc-shaped clamping sleeve one to contact the arc-shaped clamping sleeve two with the sealing baffle, that is, the arc-shaped clamping sleeve one and the arc-shaped clamping sleeve two clamp the mooring cable. With such a design, the stability of the mooring cable during use is ensured, and the problem of poor contact between the mooring cable and the electrical connector caused by strong wind at high altitude is avoided. Brief Description of the Drawings

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic structural view of the body box in the present invention; Figure 3 is a schematic structural view of the fixing frame in the present invention; Figure 4 is a schematic structural view of the push plate in the present invention; Figure 5 is a schematic structural view of the electrical connector in the present invention; Figure 6 is a schematic structural view of the embedding groove in the present invention; Figure 7 is a schematic structural view of the ratchet plate in the present invention; Figure 8 is a schematic structural view of the limiting support frame in the present invention; Figure 9 is a schematic side view structure of the present invention; Figure 10 is a schematic structure view when the support leg frame is folded up in the present invention.

[0022] In the figure: 1, UAV body; 101, body box; 102, arm; 103, propeller; 2, ground power supply; 3, tethered cable; 4, support leg frame; 5, electrical connector; 6, embedding groove; 7, sealing baffle; 8, fixing frame; 9, horizontal axis; 10, driven gear; 11, electric telescopic rod; 12, push plate; 121, wedge block; 13, ratchet plate; 131, limiting groove; 14, limiting support frame; 15, limiting spring; 16, limiting stop bar; 17, telescopic elastic rod; 171, circular pressing column; 18, sealing frame; 19, pressing frame; 20, arc-shaped clamping sleeve one; 21, arc-shaped clamping sleeve two. Detailed Embodiments

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0024] As Figures 1 to 5As shown in the figure, a tethered lighting drone according to an embodiment of the present invention is a drone system that is connected to a ground power supply or a control system through a tethered cable to achieve long-term hovering in the air and provide lighting services; it includes a drone body 1 and a ground power supply 2, and the drone body 1 and the ground power supply 2 are connected through a tethered cable 3. The ground power supply 2 provides the drone body 1 with hovering and lighting services through the tethered cable 3. The drone body 1 is composed of a body box 101, arms 102, and propellers 103. The arms 102 are arranged around the body box 101, and the propellers 103 are arranged at the edges of each arm 102. A plurality of support leg frames 4 are arranged on the lower end surface of the body box 101. An electrical connector 5 is arranged on the lower end surface of the body box 101. A protection mechanism is arranged at the position corresponding to the electrical connector 5 on the lower end surface of the body box 101 for protecting the electrical connector 5. The plurality of support leg frames 4 are designed to be spaced apart from each other; It should be noted that the drone body 1 is controlled by an external controller, and a lighting lamp is arranged on the lower end surface of the body box 101; Specifically, during use, first transport the drone body 1 and the ground power supply 2 to a suitable position through an external transportation device, and then control the propellers 103 to rotate through an external controller, so that when the propellers 103 rotate, the body box 101 is driven to rise to a suitable lighting position. And when the entire drone body 1 is at a high altitude, the support leg frames 4 will be retracted to improve the lighting effect of the lighting system on the surface of the drone body 1. Moreover, the protection mechanism protects the connection between the electrical connector 5 of the body box 101 and the tethered cable 3, which can prevent water from entering at the connection between the tethered cable 3 and the electrical connector 5 in rainy weather, ensuring the normal lighting effect of the drone body 1.

[0025] As Figures 2 to 6 shown, an embedding groove 6 is formed at the edge of the lower end surface of the body box 101, and the electrical connector 5 is arranged inside the embedding groove 6. The protection mechanism includes a sealing baffle 7 slidably arranged inside the embedding groove 6. The shape of the sealing baffle 7 is adapted to the shape of the embedding groove 6, and the sealing baffle 7 can move up and down along the inner wall of the embedding groove 6; During operation, refer to the attached Figure 5 and Figure 6As shown in the figure, at this time, the electrical connector 5 and the tether cable 3 are in a connected state, and the connection part is located inside the embedding groove 6. At the same time, the UAV body 1 is at a high altitude and is performing lighting work. The sealing baffle 7 completely blocks the entire embedding groove 6. Such a design has two advantages. First, it avoids the connection part of the electrical connector 5 and the tether cable 3 being exposed outside, preventing external rainwater from entering and affecting the lifting and lighting of the UAV body 1 itself. Second, under the pressing of the sealing baffle 7 on the tether cable 3, it can avoid the problem that when the tether cable 3 is at a high altitude and the wind force acting on it is too large, the connection part between it and the electrical connector 5 becomes detached, and maintains its clamping effect with the electrical connector 5.

[0026] Two sets of fixing frames 8 are fixedly connected to the lower end surface of the body box 101. The two sets of fixing frames 8 are symmetrically designed with respect to the body box 101. A rotating horizontal shaft 9 is rotatably connected to the surface of each set of fixing frames 8. A driven gear 10 is fixedly installed on the outer peripheral surface of each rotating horizontal shaft 9. A driving unit is arranged on the lower end surface of the body box 101. The driving unit is used to drive the driven gear 10 to rotate. A plurality of support leg frames 4 are installed on the outer peripheral surface of the rotating horizontal shaft 9; During operation, when the UAV body 1 descends from a high altitude to the ground, under the action of the driving unit of the body box 101, it can drive the driven gear 10 to rotate. The driven gear 10 drives the rotating horizontal shaft 9 to rotate. The rotating horizontal shaft 9 drives the support leg frames 4 to open and assume the Figure 2 state shown in the figure. In this way, it can be ensured that before the UAV body 1 lands on the ground, multiple support leg frames 4 will open, ensuring the stability of the UAV body 1 during landing and ensuring its safety during use. Moreover, when the UAV body 1 is at a high altitude, multiple support leg frames 4 will merge below the body box 101. As shown in the attached figure, in this way, it can avoid the opened support leg frames 4 affecting the irradiation effect of the lighting system, and maximize the irradiation range of the lighting system.

[0027] As Figures 3 to 8 shown in the figure, the driving unit includes an electric telescopic rod 11. The electric telescopic rod 11 is fixedly installed on the lower end surface of the body box 101. A push plate 12 is fixedly installed at the telescopic end of the electric telescopic rod 11. Two wedge-shaped blocks 121 are installed on the side wall of the push plate 12. Two sets of ratchet plates 13 are slidably arranged below the body box 101. The two sets of ratchet plates 13 are respectively meshed with two driven gears 10. The inclined surface of the wedge-shaped block 121 is in contact with one end surface of the ratchet plate 13; During operation, when it is necessary to open the support leg frame 4, the telescopic end of the electric telescopic rod 11 is controlled to move at this time, so that the telescopic end drives the push plate 12 to move, and the push plate 12 drives the two wedge-shaped blocks 121 to move. During the movement of the two wedge-shaped blocks 121, their inclined surfaces will contact the end face of the ratchet plate 13 and squeeze the end of the ratchet plate 13. As a result, the ratchet plate 13 will move a certain distance, and the ratchet plate 13 will drive the driven gear 10 engaged with it to rotate. The driven gear 10 will drive the rotating cross shaft 9 to rotate, and the rotating cross shaft 9 drives the support leg frame 4 to rotate. Thus, the corresponding two groups of support leg frames 4 will open, facilitating the subsequent landing of the UAV body 1 and ensuring its use safety.

[0028] As Figures 4 to 10 shown, a plurality of limit support frames 14 are fixedly installed below the body box 101. A limit groove 131 is formed in the side wall of the ratchet plate 13. The side of the limit support frame 14 away from the body box 101 is slidably arranged inside the limit groove 131. A limit spring 15 is fixedly installed on the inner wall of the limit groove 131. The side of the limit spring 15 away from the groove wall of the limit groove 131 is connected to the side wall of the limit support frame 14. During operation, when the ratchet plate 13 moves and drives the driven gear 10 to rotate, the limit spring 15 on the surface of the ratchet plate 13 will be deformed by the ratchet plate 13. When the UAV body 1 is in the high-altitude lighting state, at this time, the two wedge-shaped blocks 121 are located on the side away from the ratchet plate 13, and under the elastic force of the limit spring 15, the ratchet plate 13 can be restored to its initial position. It should be noted that the initial position is the position where the support leg frame 4 is closed under the body box 101, that is, the position shown in Figure 10 shown. In this way, the flexibility of the support leg frame 4 is improved, it can be applied to multiple sites, and it is convenient for the UAV body 1 to illuminate itself; It should be noted that the limit groove 131 and the limit support frame 14 are designed to limit the moving position of the ratchet plate 13, so as to facilitate the opening or restoration of the support leg frame 4.

[0029] A limit stop rod 16 is fixedly connected to the lower end surface of the body box 101 and on the side of each support leg frame 4. The limit stop rod 16 is designed in an inclined manner, and the top of the limit stop rod 16 contacts the side wall of the support leg frame 4. During operation, the limit stop rod 16 is designed, that is, when the two groups of support leg frames 4 are opened, the limit stop rod 16 will give a certain limit support force, that is, adjust the opening angle of the support leg frame 4. In this way, it is convenient for this UAV body 1 to be applied to various scenarios, such as flat ground or other uneven ground for support.

[0030] Elastic telescopic rods 17 are installed around the inner wall of the embedding groove 6. A telescopic spring is sleeved on the outer peripheral surface of each elastic telescopic rod 17. A sealing frame 18 is arranged on the side wall of the sealing baffle 7. A rubber sleeve is sleeved on the outer peripheral surface of the sealing frame 18. A linkage unit is arranged on the surface of one group of support leg frames 4. During operation, when the UAV body 1 is used for high-altitude lighting and the two groups of support leg frames 4 approach each other and gradually attach to the lower part of the body box 101, one group of support leg frames 4 will drive the linkage unit on its surface to move synchronously, so that the linkage unit pushes the sealing baffle 7 to move. The sealing baffle 7 compresses the elastic telescopic rods 17 and moves into the embedding groove 6. Then, the sealing baffle 7 and the sealing frame 18 on its surface will press on the surface of the embedding groove 6 to seal the embedding groove 6, ensuring the safety of the electrical connector 5 and the tethered cable 3 during use in rainy weather.

[0031] The linkage unit includes a pressing frame 19 which is fixedly installed on the side wall of one group of support leg frames 4. A circular pressing column 171 is installed on the side wall of the sealing baffle 7 close to the pressing frame 19. The end of the circular pressing column 171 is provided with a rounded corner. During operation, when the support leg frames 4 rotate in a trend of approaching each other, one group of support leg frames 4 will drive the pressing frame 19 to rotate simultaneously. During the rotation of the pressing frame 19, it will contact and squeeze the circular pressing column 171, so that the circular pressing column 171 drives the sealing baffle 7 to move. In this way, the sealing baffle 7 can continue the above actions and protect the tethered cable 3.

[0032] An arc-shaped clamping sleeve one 20 is installed on the side wall of the sealing baffle 7. An arc-shaped clamping sleeve two 21 is arranged at the corresponding position of the groove wall of the embedding groove 6 and the arc-shaped clamping sleeve one 20. During operation, referring to the attached Figure 5 and Figure 10 As shown, when the sealing baffle 7 is inside the embedding groove 6, the sealing baffle 7 will drive the arc-shaped clamping sleeve one 20 to contact the arc-shaped clamping sleeve two 21 at the same time, that is, the arc-shaped clamping sleeve one 20 and the arc-shaped clamping sleeve two 21 clamp the tethered cable 3. Such a design ensures the stability of the tethered cable 3 during use and avoids the problem of poor contact between the tethered cable 3 and the electrical connector 5 due to strong wind at high altitude.

[0033] A rectangular groove adapted to the sealing baffle 7 is opened on the groove wall of the embedding groove 6. Rubber sleeves are sleeved on the surfaces of the arc-shaped clamping sleeve one 20 and the arc-shaped clamping sleeve two 21. Such a design facilitates the protection of the tethered cable 3 and the electrical connector 5.

[0034] During operation, when in use, first transport the UAV body 1 and the ground power supply 2 to a suitable position through an external transportation device. Then, control the rotation of the propeller 103 through an external controller, so that when the propeller 103 rotates, it drives the body box 101 to rise to a suitable lighting position. And when the entire UAV body 1 is at a high altitude, the support leg frame 4 will be retracted to improve the lighting effect of the lighting system on the surface of the UAV body 1. Moreover, the protection mechanism protects the connection between the electrical connector 5 of the body box 101 and the tether cable 3, which can avoid the problem of water ingress at the connection between the tether cable 3 and the electrical connector 5 in rainy weather, ensuring the normal lighting effect of the UAV body 1; Refer to the appendix Figure 5 and Figure 6 As shown, at this time, the electrical connector 5 and the tether cable 3 are in a connected state, and the connection is located inside the embedding groove 6. At the same time, the UAV body 1 is at a high altitude and is performing lighting work. The sealing baffle 7 completely blocks the entire embedding groove 6. Such a design has two advantages. First, it avoids the connection between the electrical connector 5 and the tether cable 3 being exposed outside, resulting in the problem that external rainwater enters and affects the self-lifting and lighting of the UAV body 1. Second, under the pressing of the sealing baffle 7 on the tether cable 3, it can avoid the problem that when the tether cable 3 is at a high altitude and the wind force acting on it is too large, the connection between it and the electrical connector 5 becomes detached, maintaining its clamping effect with the electrical connector 5; When the UAV body 1 descends from a high altitude to the ground, under the action of the driving unit of the body box 101, it can drive the driven gear 10 to rotate. The driven gear 10 drives the rotating cross shaft 9 to rotate, and the rotating cross shaft 9 drives the support leg frame 4 to open and assume the state shown in the appendix Figure 2 As shown. In this way, it can be ensured that before the UAV body 1 lands on the ground, multiple support leg frames 4 will open, ensuring the stability of the UAV body 1 during landing and ensuring its safety during use; Moreover, when the UAV body 1 is at a high altitude, multiple support leg frames 4 will be combined below the body box 101. As shown in the attached drawing, this can avoid the open support leg frames 4 affecting the irradiation effect of the lighting system and maximize the irradiation range of the lighting system; When it is necessary to open the support leg frame 4, at this time, control the movement of the telescopic end of the electric telescopic rod 11, so that the telescopic end drives the push plate 12 to move. The push plate 12 drives two wedge-shaped blocks 121 to move. During the movement of the two wedge-shaped blocks 121, their inclined surfaces will contact the end surface of the ratchet plate 13 and squeeze the end of the ratchet plate 13. As a result, the ratchet plate 13 will move a certain distance, and the ratchet plate 13 will drive the driven gear 10 meshing with it to rotate. The driven gear 10 will drive the rotating cross shaft 9 to rotate, and the rotating cross shaft 9 drives the support leg frame 4 to rotate. Thus, the corresponding two groups of support leg frames 4 will open, facilitating the subsequent landing of the UAV body 1 and ensuring its safety in use; When the ratchet plate 13 moves to drive the driven gear 10 to rotate, the ratchet plate 13 will drive the limit spring 15 on its surface to deform; when the UAV body 1 is in the high-altitude lighting state, at this time, the two wedge blocks 121 are located on the side away from the ratchet plate 13, and under the elastic force of the limit spring 15, the ratchet plate 13 can be restored to its initial position. It should be noted that the initial position is the position where the support leg frame 4 is combined under the body box 101, that is, the position shown in the attachment Figure 10 This improves the flexibility of the support leg frame 4, can be applied to multiple sites, and facilitates the lighting of the UAV body 1 itself; when the UAV body 1 is in high-altitude lighting and the two groups of support leg frames 4 approach each other and gradually attach to the lower part of the body box 101, one group of support leg frames 4 will drive the linkage unit on its surface to move synchronously, so that the linkage unit pushes the sealing baffle 7 to move. The sealing baffle 7 compresses the telescopic elastic rod 17 and moves into the embedding groove 6. Then, the sealing baffle 7 and the sealing frame 18 on its surface will press on the surface of the embedding groove 6 to seal the embedding groove 6, ensuring the safety of the electrical connector 5 and the tethered cable 3 during use in rainy weather; Refer to the attachment Figure 5 and Figure 10 As shown, when the sealing baffle 7 is inside the embedding groove 6, the sealing baffle 7 will simultaneously drive the arc-shaped clamp sleeve one 20 to contact the arc-shaped clamp sleeve two 21, that is, the arc-shaped clamp sleeve one 20 and the arc-shaped clamp sleeve two 21 clamp the tethered cable 3. Such a design ensures the stability of the tethered cable 3 during use and avoids the problem of poor contact between the tethered cable 3 and the electrical connector 5 due to strong wind at high altitude.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A tethered lighting drone, comprising a drone body (1) and a ground power supply (2), characterized in that: The UAV body (1) and the ground power supply (2) are connected by a tethered cable (3). The ground power supply (2) provides hovering and lighting services to the UAV body (1) through the tethered cable (3). The UAV body (1) is composed of a body box (101), arms (102), and propellers (103). The arms (102) are arranged around the body box (101), and the propellers (103) are arranged at the edges of each arm (102). A plurality of support leg frames (4) are arranged on the lower end surface of the body box (101). An electrical connector (5) is arranged on the lower end surface of the body box (101). A protection mechanism is arranged at a position corresponding to the electrical connector (5) on the lower end surface of the body box (101). The protection mechanism is used to protect the electrical connector (5). The plurality of support leg frames (4) are designed to be spaced apart from each other.

2. The tethered lighting drone according to claim 1, wherein: An embedding groove (6) is formed at the edge of the lower end surface of the body box (101). The electrical connector (5) is arranged inside the embedding groove (6). The protection mechanism includes a sealing baffle (7) slidably arranged inside the embedding groove (6). The shape of the sealing baffle (7) is adapted to the shape of the embedding groove (6). The sealing baffle (7) can move up and down along the inner wall of the embedding groove (6).

3. The tethered lighting drone according to claim 2, characterized in that: Two fixing frames (8) are fixedly connected to the lower end surface of the body box (101). The two fixing frames (8) are symmetrically designed with respect to the body box (101). A rotating horizontal shaft (9) is rotatably connected to the surface of each fixing frame (8). A driven gear (10) is fixedly installed on the outer peripheral surface of each rotating horizontal shaft (9). A driving unit is arranged on the lower end surface of the body box (101). The driving unit is used to drive the driven gear (10) to rotate. The plurality of support leg frames (4) are installed on the outer peripheral surface of the rotating horizontal shaft (9).

4. The tethered lighting drone according to claim 3, characterized in that: The driving unit includes an electric telescopic rod (11). The electric telescopic rod (11) is fixedly installed on the lower end surface of the body box (101). A push plate (12) is fixedly installed at the telescopic end of the electric telescopic rod (11). Two wedge-shaped blocks (121) are installed on the side wall of the push plate (12). Two ratchet plates (13) are slidably arranged below the body box (101). The two ratchet plates (13) are respectively meshed with the two driven gears (10). The inclined surface of the wedge-shaped block (121) contacts one end surface of the ratchet plate (13).

5. The tethered lighting drone according to claim 4, wherein: A plurality of limiting support frames (14) are fixedly installed below the body box (101). A limiting groove (131) is formed in the side wall of the ratchet plate (13). The side of the limiting support frame (14) away from the body box (101) is slidably arranged inside the limiting groove (131). A limiting spring (15) is fixedly installed on the inner wall of the limiting groove (131). One side of the limiting spring (15) away from the groove wall of the limiting groove (131) is connected to the side wall of the limiting support frame (14).

6. The tethered lighting drone according to claim 5, characterized in that: A limiting stop bar (16) is fixedly connected to the lower end surface of the body box (101) and on the side of each support leg frame (4). The limiting stop bar (16) is designed in an inclined manner, and the top end of the limiting stop bar (16) contacts the side wall of the support leg frame (4).

7. The tethered lighting drone according to claim 5, characterized in that: Expansion elastic rods (17) are installed around the inner wall of the embedding groove (6). A telescopic spring is sleeved on the outer peripheral surface of each expansion elastic rod (17). A sealing frame (18) is arranged on the side wall of the sealing baffle (7). A rubber sleeve is sleeved on the outer peripheral surface of the sealing frame (18). A linkage unit is arranged on the surface of one group of support leg frames (4).

8. The tethered lighting drone according to claim 7, wherein: The linkage unit includes a pressing frame (19). The pressing frame (19) is fixedly installed on the side wall of the one group of support leg frames (4). A circular pressing column (171) is installed on the side wall of the sealing baffle (7) close to the pressing frame (19). The end of the circular pressing column (171) is provided with a rounded corner.

9. The tethered lighting drone according to claim 8, wherein: An arc-shaped clamping sleeve one (20) is installed on the side wall of the sealing baffle (7). An arc-shaped clamping sleeve two (21) is arranged at the corresponding position of the groove wall of the embedding groove (6) and the arc-shaped clamping sleeve one (20).

10. The tethered lighting drone according to claim 9, characterized in that: A rectangular groove adapted to the sealing baffle (7) is opened on the groove wall of the embedding groove (6). Rubber sleeves are sleeved on the surfaces of the arc-shaped clamping sleeve one (20) and the arc-shaped clamping sleeve two (21).

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