Unmanned aerial vehicle traction system

Abstract

The invention discloses an unmanned aerial vehicle traction system, and belongs to the technical field of unmanned aerial vehicles, the unmanned aerial vehicle traction system comprises an unmanned aerial vehicle, a traction system is arranged at the lower end of a vehicle body of the unmanned aerial vehicle, the traction system comprises a winch assembly connected with the vehicle body, a flight control computer and a radar are arranged on the upper end face of the winch assembly, and a supporting rod assembly is arranged on the lower end face of the winch assembly; a motor assembly is arranged on the side wall of the winch assembly. According to the unmanned aerial vehicle traction system, the paraglider is driven to move forwards when the unmanned aerial vehicle flies forwards, the speed needed by flying of the paraglider is provided, the flying problem of the paraglider in an area with small wind power is solved, and popularization of paraglider movement is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a unmanned aerial vehicle traction system. Background Art

[0002] The low-altitude economy is a comprehensive economic form that takes low-altitude flight activities as its core, and drives the development of low-altitude infrastructure, low-altitude aircraft manufacturing, low-altitude operation services, and low-altitude flight support through the interaction of new productivity composed of technologies such as unmanned flight and low-altitude intelligent networking with airspace, market and other factors. This economic form not only covers general aviation, drones, emergency rescue, logistics and distribution, but also promotes the efficient use of land space and the coordinated development of regional economy.

[0003] Paragliding is an important part of low-altitude sports and is becoming more and more popular among young people. Paragliders themselves have no power. The reason why they can fly is that the canopy shows a special shape after being filled with air, which is entirely controlled by the pilot and combined with various characteristics of the atmosphere. Paragliders will generate speed and lift during flight in the air, and their speed and lift are much greater than their resistance. Paragliders need to fly under certain customs conditions. At present, there are many paraglider enthusiasts in the eastern region, but the wind in the eastern region is relatively small. The main paragliding venues are in the central and western regions with strong winds. Paraglider enthusiasts need to travel long distances to the central and western regions for paragliding, which is time-consuming and laborious. If drones can be used to tow paragliders in the eastern region, the sports needs of most regions can be met. It is particularly important to design a drone towing system, especially to ensure safety.

[0004] The Chinese invention patent with application number "202210950185.7" discloses "a UAV traction device for sag detection". The UAV traction group device includes: a UAV, a docking assembly is arranged below it, which is used to grab the rope applicator; a traction assembly is installed at the bottom of the UAV, and the traction assembly is used to pull the docking assembly; wherein, the traction assembly includes an electric heating roller, and the electric heating roller is wrapped with a traction rope outside; the docking assembly includes an electromagnet and a rope applicator, and there are two electromagnets, one electromagnet is connected to the rope applicator, and the other electromagnet is connected to the traction rope. In the above technology, since the electromagnet at the end of the traction rope corresponds to the electromagnet inside the applicator, the technical problems of connecting the applicator to the UAV and connecting the applicator to the iron tower are effectively solved, thereby realizing the connection between the applicator and the electromagnet, and facilitating the grabbing of the UAV. However, it can only be used in the field of power detection, has a single function, and is only suitable for sag detection of power lines, and has a narrow application range.

[0005] Based on this, the present invention proposes a UAV traction system. Summary of the invention

[0006] The purpose of the present invention is to provide a UAV towing system to solve the above-mentioned problems.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The present invention discloses an unmanned aerial vehicle (UAV) traction system, comprising an UAV. A traction system is arranged at the lower end of a body of the UAV, the traction system comprises a winch assembly connected to the body, a flight control computer and a radar are arranged on the upper end surface of the winch assembly, a support rod assembly is arranged on the lower end surface of the winch assembly, and a motor assembly is arranged on the side wall of the winch assembly.

[0009] Furthermore, the support rod assembly includes a base, the lower end of the base is rotatably connected to the support rod, and the other end of the support rod is provided with a guide head.

[0010] Furthermore, the base includes a base joint, which includes a flat plate located at the top, vertical plates are symmetrically arranged at the lower end of the flat plate, and an adapter is arranged between the vertical plates. The adapter is a cross-shaped structure, and the middle hole rod of the adapter is connected to the support rod, and the horizontal hole rods on both sides of the middle hole rod are threadedly connected to the rotating shaft, and the rotating shaft is provided with an axle seat after passing through the vertical plates.

[0011] Furthermore, the guide head includes symmetrically distributed clamping plates, a ball head is provided in the middle position of the clamping plates, a gap is left between the ball head and the inner side wall of the clamping plates; and a groove for clamping the support rod is provided on the inner side wall of the clamping plates.

[0012] Furthermore, the upper and lower ends of the clamping plate are fixedly connected together by fasteners.

[0013] Further, the winch assembly includes a first rotating disk, a second rotating disk and a third rotating disk which are sequentially arranged from the outside to the inside;

[0014] The third turntable comprises symmetrically distributed third end plates, the third end plates are connected together by a plurality of equally distributed third pillars, and the third end plates are provided with traction rope shafts inside the plurality of third pillars;

[0015] The second turntable comprises symmetrically distributed second end plates, and the second end plates are connected together by a plurality of equally distributed second pillars;

[0016] The first turntable includes symmetrically distributed first end plates, the first end plates are connected together by a plurality of equally distributed first pillars, and the upper end of the first turntable is provided with a first connecting seat connected to the machine body.

[0017] Furthermore, outer bearings are symmetrically arranged between the first turntable and the second turntable, and inner bearings are symmetrically arranged between the second turntable and the third turntable.

[0018] Furthermore, a first clamping groove and a second clamping groove for clamping the inner bearing are respectively provided on the outer wall of the third end plate and the inner wall of the second end plate; a third clamping groove and a fourth clamping groove for clamping the outer bearing are respectively provided on the outer wall of the second end plate and the inner wall of the first end plate.

[0019] Furthermore, the motor assembly includes a motor bracket connected to the body, and the motor is arranged on the motor bracket.

[0020] Furthermore, the vertical plate is provided with a through hole for the rotating shaft to pass through.

[0021] Compared with the prior art, the beneficial technical effects of the present invention are:

[0022] The unmanned aerial vehicle traction system of the invention is installed on the unmanned aerial vehicle, and is composed of a support rod assembly, a winch assembly, a motor assembly, a flight control computer, and a radar. The winch assembly is a device for retracting and releasing the traction rope, so that the traction rope is wound inside it, and the traction rope is straightened through the first and second turntables inside so that the traction rope is not knotted. The support rod assembly supports the traction rope away from the propeller area of ​​the unmanned aerial vehicle to prevent the traction rope from being entangled with the propeller, and at the same time, it can change the direction to reduce the lateral force of the traction rope on the support rod assembly. The radar tests the position and distance of the rear paraglider and provides data to the flight control computer. The motor assembly controls the retraction and release of the traction rope and keeps the traction rope in a taut state. The flight control computer controls the flight attitude of the unmanned aerial vehicle and controls the retraction and release of the traction rope by the motor assembly, so that the unmanned aerial vehicle always stays in front of the paraglider. In short, the unmanned aerial vehicle traction system of the invention drives the paraglider to move forward when the unmanned aerial vehicle flies forward, provides the speed required for the paraglider to fly, solves the problem of paraglider flying in areas with less wind, and helps promote the paragliding sport. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 An axonometric diagram of the unmanned aerial vehicle traction system of the present invention installed on a unmanned aerial vehicle;

[0025] Figure 2 This is an axonometric diagram of the UAV traction system of the present invention;

[0026] Figure 3 This is an exploded view of the UAV traction system of the present invention;

[0027] Figure 4 This is the axonometric drawing of the motor assembly;

[0028] Figure 5This is the axonometric view of the support rod assembly;

[0029] Figure 6 This is the exploded view of the base;

[0030] Figure 7 It is a cross-sectional view of the connection area between the base and the support rod;

[0031] Figure 8 This is the exploded view of the guide head;

[0032] Fig. 9 It is a cross-sectional view of the connection area between the guide head and the support rod;

[0033] Fig.10 This is the axonometric view of the winch assembly;

[0034] Fig.11 The exploded view of the winch assembly;

[0035] Fig.12 This is the axonometric drawing of the third turntable;

[0036] Fig.13 This is the axonometric drawing of the second turntable;

[0037] Fig.14 This is the axonometric drawing of the first turntable;

[0038] Fig.15 is a cross-sectional view of the winch assembly at the end plate;

[0039] Description of the accompanying drawings: 1, traction system; 11, support rod assembly; 111, base; 1111, base joint; 1112, shaft seat; 1113, rotating shaft; 1114, adapter; 112, support rod; 113, guide head; 1131, clamping plate; 1132, ball head; 12, capstan assembly; 121, first turntable; 1211, first pillar; 1212, first end plate; 1213, first connecting seat; 1214, slot four; 1 22. Second turntable; 1221. Second pillar; 1222. Second end plate; 1223. Second slot; 1224. Third slot; 123. Third turntable; 1231. Third pillar; 1232. Third end plate; 1233. Towing rope shaft; 1234. First slot; 124. Outer bearing; 125. Inner bearing; 13. Motor assembly; 131. Motor; 132. Motor bracket; 14. Flight control computer; 15. Radar; 2. UAV. DETAILED DESCRIPTION

[0040] like Figure 1-15As shown, a UAV traction system includes a UAV 2, a traction system 1 is installed at the lower end of the body of the UAV 2, and the traction system 1 includes a winch assembly 12 connected to the body, a flight control computer 14 and a radar 15 are installed on the upper end surface of the winch assembly 12, a support rod assembly 11 is installed on the lower end surface of the winch assembly 12, and a motor assembly 13 is installed on the side wall of the winch assembly 12.

[0041] The support rod assembly 11 supports the traction rope to the outside of the propeller, fixes the traction rope near the drone, prevents the wind speed of the propeller from driving the traction rope, causing the propeller and the traction rope to be entangled, causing damage to the traction rope and the propeller, and then causing damage to the drone. The traction rope is fixed inside the winch assembly 12, and the traction rope is retracted and released by the rotation of the winch assembly 13, while ensuring that the traction rope is not knotted and neat, ensuring the convenience of multiple uses of the drone traction system. The motor assembly 13 is used to control the fixation and rotation of the winch, maintain the control of the length and tension of the traction rope, ensure that the traction rope is in a taut state, and does not interfere with other structures to ensure safety. The radar 15 measures the position of the rear paraglider and provides the information to the flight control computer 14. The aircraft computer 14 controls the flight attitude of the drone 2 and the control of the motor assembly 13 on the winch assembly 12, ensuring that the paraglider is always directly behind the drone and a certain safety distance is guaranteed.

[0042] Specifically, the winch assembly 12 is fixed to the rear of the drone 2, the proximal end of the support rod assembly 11 is fixed to the lower part of the winch assembly 12, the distal end is limited by the traction rope, the axis of the motor assembly 13 is aligned with the axis of the winch assembly 12, and the radar 15 and the flight control computer 14 are fixed to the upper part of the winch assembly 12.

[0043] like Figure 5 The support rod assembly 11 includes a base 111 , the lower end of the base 111 is rotatably connected to a support rod 112 , and a guide head 113 is installed at the other end of the support rod 112 . The support rod 112 is a long round tube made of aluminum alloy.

[0044] like Figure 6 , 7As shown, the base 111 includes a base joint 1111, and the base joint 1111 includes a flat plate located at the top, which is used to fix and connect the winch assembly 12. Vertical plates are symmetrically installed at the lower end of the flat plate, and an adapter 1114 is installed in the gap between the vertical plates. The adapter 1114 is a cross-shaped structure. The middle hole rod of the adapter 1114 is connected to the support rod 12, and the horizontal hole rods on both sides of the middle hole rod are threadedly connected to the rotating shaft 1113. The rotating shaft 1113 is provided with an external thread that is threadedly connected to the horizontal hole rod. After the rotating shaft 1113 passes through the vertical plate, it is sleeved with an axle seat 1112, and the vertical plate is provided with a through hole for the rotating shaft 1113 to pass through. The support rod 12 can be rotated relative to the base joint 1111 through the rotating shaft 1113, that is, when the height of the drone 2 is inconsistent with that of the rear paraglider, the support rod 12 can be rotated around the axis of the rotating shaft 1113, so that the support rod 12 only bears axial tension but not bending moment, thereby preventing the support rod 12 from being bent.

[0045] like Figure 8 , 9 As shown, the guide head 113 includes symmetrically distributed clamping plates 1131, and a ball head 1132 is installed in the middle position of the clamping plates 1131. The traction rope passes through the hole of the ball head 1132. When the traction rope deflects, the ball head 1132 rotates accordingly to reduce the lateral force of the traction rope. A gap is left between the ball head 1132 and the inner wall of the clamping plate 1131, and grease is applied so that the ball head 1132 can be easily rotated. A groove is provided on the inner wall of the clamping plate 1131 to clamp the support rod 112, which is used to increase the area of ​​cooperation with the support rod 12 and increase the clamping force so that the support rod 112 is fixed.

[0046] The upper and lower ends of the clamping plate 1131 are fixedly connected together by fasteners, such as Figure 8 As shown, the fastener may be a bolt assembly.

[0047] like Fig.10 , 11 As shown in Figures 12, 13, 14 and 15, the winch assembly 12 includes a first turntable 121, a second turntable 122 and a third turntable 123 which are sequentially installed from the outside to the inside.

[0048] The third turntable 123 includes symmetrically distributed third end plates 1232, which are connected together by a plurality of equally distributed third pillars 1231. The third pillars 1231 are arranged along the axial circumference to keep the traction rope tight and tidy. The third end plate 1232 located inside the plurality of third pillars 1231 is installed with a traction rope shaft 1233, and the traction rope is wound around the traction rope shaft 1233. The traction rope shaft 1233 rotates forward and reversely under the action of the motor 131 to achieve the traction rope retraction and release operation. The third pillar 1231 has a larger stroke than the traction rope shaft 1233, and when the traction rope is rotated and wound, a longer traction rope can be stored.

[0049] The second turntable 122 includes symmetrically distributed second end plates 1232 , and the second end plates 1232 are connected together by a plurality of equally distributed second pillars 1221 , and the second pillars 1221 are arranged along the axial circumference.

[0050] The first turntable 121 includes a symmetrically distributed first end plate 1212, and the lower end of the first end plate 1212 has a support plate extending downward for installing the base 111. The first end plates 1212 are connected together by a number of equally distributed first pillars 1211, and the first pillars 1211 are arranged along the axial circumference. The upper end of the first turntable 121 is installed with a first connecting seat 1213 connected to the body, which is used to keep the first turntable 121 stationary. Specifically, a mounting surface is formed on the first connecting seat 1213, on which the radar 15 and the flight control computer 14 are installed to provide support therefor. At the same time, the first connecting seat 1213 is connected to the body of the drone 2 to provide support for the winch assembly 12 and the pulling force of the traction rope to ensure safety.

[0051] The above-mentioned end plates are all made of aluminum alloy, preferably 7050-T7451 aluminum alloy, and the support is made of aluminum alloy round tube with threads machined on the inner wall at both ends, and screws ( Fig.10 and 11 The traction rope passes through the first support 1211 and the second support 1221 of the first rotating disk 121 and the second rotating disk 122, so that when the traction rope is retracted and released, the first support 1211 and the second support 1221 play a role of early guidance, reducing the friction of the traction rope; in addition, the first support 1211, the second support 1221 and the third support 1231 can keep the traction rope in a relatively fixed direction during the drawing process, avoiding the traction rope from being randomly entangled or crossed on the surface of the traction rope shaft 1233, thereby reducing the possibility of knotting.

[0052] like Fig.11 , 15As shown, an outer bearing 124 is symmetrically installed between the first turntable 121 and the second turntable 122, and an inner bearing 125 is symmetrically installed between the second turntable 122 and the third turntable 123, so that the turntables can rotate smoothly with each other, so as to ensure that the traction rope is wound around the third pillar 1231 of the third turntable 123. The outer wall of the third end plate 1232 and the inner wall of the second end plate 1222 are respectively provided with a first clamping groove 1234 and a second clamping groove 1223 for clamping the inner bearing 125; the outer wall of the second end plate 1222 and the inner wall of the first end plate 1212 are respectively provided with a third clamping groove 1224 and a fourth clamping groove 1214 for clamping the outer bearing 124; the design of the clamping groove ensures the installation of the bearing, prevents the bearing from falling out, and ensures the mutual rotation between the three turntables.

[0053] like Figure 4 As shown, the motor assembly 13 includes a motor bracket 132 connected to the body, and a motor 131 is installed on the motor bracket 132. The motor bracket 132 provides a certain support strength and rigidity to resist the torque of the motor 131 without damage and deformation. The motor 131 is powered by the power supply system of the drone 2 and is controlled by the flight control computer 14 of the drone 2. The motor 131 mainly has two functions: first, it always maintains a constant torque to keep the traction rope in a tight state and provide traction for the rear paraglider; second, the motor 131 increases the torque to rotate, so that the winch assembly 12 retracts the traction rope and reduces the distance between the paraglider and the drone 2; third, the motor 131 reduces the torque to rotate, so that the winch assembly 12 releases the traction rope and increases the distance between the paraglider and the drone 2.

[0054] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A UAV towing system, characterized by: The invention comprises an unmanned aerial vehicle (2), wherein a traction system (1) is arranged at the lower end of a body of the unmanned aerial vehicle (2), wherein the traction system (1) comprises a winch assembly (12) connected to the body, wherein a flight control computer (14) and a radar (15) are arranged on the upper end surface of the winch assembly (12), a support rod assembly (11) is arranged on the lower end surface of the winch assembly (12), and a motor assembly (13) is arranged on the side wall of the winch assembly (12).

2. The unmanned aerial vehicle traction system according to claim 1, characterized in that: The support rod assembly (11) comprises a base (111), the lower end of the base (111) is rotatably connected to a support rod (112), and the other end of the support rod (112) is provided with a guide head (113).

3. The unmanned aerial vehicle traction system according to claim 2, characterized in that: The base (111) comprises a base joint (1111), wherein the base joint (1111) comprises a flat plate located at the top, wherein vertical plates are symmetrically arranged at the lower end of the flat plate, and an adapter (1114) is arranged between the vertical plates, wherein the adapter (1114) is in a cross-shaped structure, wherein the middle hole rod of the adapter (1114) is connected to the support rod (12), and the horizontal hole rods on both sides of the middle hole rod are threadedly connected to the rotating shaft (1113), and the rotating shaft (1113) is sleeved with an axle seat (1112) after passing through the vertical plate.

4. The unmanned aerial vehicle traction system according to claim 2, characterized in that: The guide head (113) comprises symmetrically distributed clamping plates (1131), a ball head (1132) is arranged at the middle position of the clamping plates (1131), a gap is left between the ball head (1132) and the inner side wall of the clamping plates (1131); a groove for clamping the support rod (112) is provided on the inner side wall of the clamping plates (1131).

5. The unmanned aerial vehicle towing system according to claim 4, characterized in that: The upper and lower ends of the clamping plate (1131) are fixedly connected together by fasteners.

6. The unmanned aerial vehicle towing system according to claim 1, characterized in that: The winch assembly (12) comprises a first rotating disk (121), a second rotating disk (122) and a third rotating disk (123) which are arranged in sequence from the outside to the inside; The third rotating disk (123) comprises symmetrically distributed third end plates (1232), the third end plates (1232) are connected together by a plurality of third pillars (1231) distributed at equal intervals, and the third end plates (1232) located inside the plurality of third pillars (1231) are provided with a traction rope shaft (1233); The second turntable (122) comprises symmetrically distributed second end plates (1232), and the second end plates (1232) are connected together by a plurality of equally distributed second pillars (1221); The first turntable (121) comprises symmetrically distributed first end plates (1212), the first end plates (1212) are connected together by a plurality of equidistantly distributed first pillars (1211), and the upper end of the first turntable (121) is provided with a first connecting seat (1213) connected to the machine body.

7. The unmanned aerial vehicle towing system according to claim 6, characterized in that: An outer bearing (124) is symmetrically arranged between the first rotating disk (121) and the second rotating disk (122), and an inner bearing (125) is symmetrically arranged between the second rotating disk (122) and the third rotating disk (123).

8. The unmanned aerial vehicle towing system according to claim 7, characterized in that: A first clamping groove (1234) and a second clamping groove (1223) for clamping the inner bearing (125) are respectively provided on the outer side wall of the third end plate (1232) and the inner side wall of the second end plate (1222); a third clamping groove (1224) and a fourth clamping groove (1214) for clamping the outer bearing (124) are respectively provided on the outer side wall of the second end plate (1222) and the inner side wall of the first end plate (1212).

9. The unmanned aerial vehicle towing system according to claim 1, characterized in that: The motor assembly (13) comprises a motor bracket (132) connected to the machine body, and a motor (131) is arranged on the motor bracket (132).

10. The unmanned aerial vehicle towing system according to claim 3, characterized in that: The vertical plate is provided with a through hole for the rotating shaft (1113) to pass through.

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