Small unmanned aerial vehicle with recovery hook device

Abstract

The invention relates to the technical field of unmanned aerial vehicle recovery, in particular to a small unmanned aerial vehicle with recovery hook devices, the recovery hook devices are arranged at the tips of two wings of the unmanned aerial vehicle respectively, each recovery hook device comprises a hook body and an elastic limiting assembly, the hook bodies are used for being connected with wing tips of the wings, and each hook body is provided with a long-strip-shaped hook groove with an opening in one end; the open end of the long-strip hook groove is in smooth transition with the end part of the front edge of the wing; one end of the elastic limiting assembly is fixedly connected to the hook body, and the other end of the elastic limiting assembly is located at the opening of the long-strip hook groove. The tip ends of the two wings of the unmanned aerial vehicle are each provided with one recovery hook device, so that the recovery hook device on one side which is more convenient and safer can be selected to carry out sky hook recovery according to reasons such as geography and weather when the unmanned aerial vehicle is recovered, and the safety and reliability of the recovery process of the unmanned aerial vehicle are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicle recovery, and in particular to a small unmanned aerial vehicle with a recovery hook device. Background Art

[0002] Catapult takeoff / skyhook recovery is a new type of UAV take-off and landing technology developed in recent years. This take-off and landing method does not require a runway and has low requirements for the launch and recovery site. It meets the high maneuverability requirements of field operations and is also particularly suitable for ship take-off and landing. Therefore, the UAV skyhook recovery method has great advantages.

[0003] During skyhook recovery, the drone has a very large instantaneous load on the recovery hook rope, and the rope load needs to be transferred to the wing and then to the drone body. In addition, it is required that the recovery rope can be locked after sliding into the recovery hook device, and no relative sliding will occur to prevent the drone from falling and being damaged, and the recovery rope can be quickly removed at the end of the recovery. At present, the skyhook recovery devices used in most skyhook recovery drones are relatively complex, with high manufacturing costs and poor reliability. The rope often slips to the knot after entering the hook. If the knot happens to be at the entrance of the skyhook device during the recovery process, a decoupling accident will occur, resulting in recovery failure.

[0004] Therefore, it is necessary to provide a small UAV with a recovery hook device to solve the above problems. Summary of the invention

[0005] The invention provides a small unmanned aerial vehicle with a recovery hook device to solve the existing problems.

[0006] A small UAV with a recovery hook device of the present invention adopts the following technical solution, including: a recovery hook device is respectively arranged at the tip of two wings of the UAV; The recovery hook device includes a hook body and an elastic limiting assembly. The hook body is used to be connected to the wingtip of the wing. A long hook groove with an open end is provided on the hook body. The open end of the long hook groove and the end of the leading edge of the wing have a smooth transition. One end of the elastic limiting assembly is fixedly connected to the hook body, and the other end of the elastic limiting assembly is located at the opening of the long hook groove.

[0007] Preferably, the hook body includes: a support plate, the support plate is connected to the wingtip of the wing, a triangular plate body is arranged on the support plate, an arc plate is arranged on one side of the triangular plate body, a long hook groove is formed between the outer arc surface of the arc plate and the side of the triangular plate body, and a connecting hole for connecting the elastic limiting component is arranged on a section close to the free end of the arc plate.

[0008] Preferably, the elastic limiting assembly includes: a mouth-shaped elastic ring, and an open end is provided on the mouth-shaped elastic ring, and the two ends of the open end are parallel, wherein two connecting holes are provided on a section close to the free end of the arc plate, and the two ends of the mouth-shaped elastic ring are connected to the corresponding connecting holes.

[0009] Preferably, a groove is provided on the outer arc surface of the arc plate, wherein after the mouth-shaped elastic ring is squeezed and deformed by the skyhook recovery capture rope, a section of the mouth-shaped elastic ring away from its open end is squeezed into the groove.

[0010] Preferably, a butt joint rib is installed in the wing tip of the wing, and a section of the butt joint rib close to the leading edge of the wing is connected to the support plate.

[0011] Preferably, a weight-reducing groove is provided on the butt joint rib.

[0012] Preferably, the length of the elongated hook groove is 1.5 times the diameter of the skyhook recovery capture rope.

[0013] The beneficial effects of the present invention are: The drone provided by the present invention has a recovery hook device installed at the tips of the two wings of the drone, so that when the drone is recovered, the recovery hook device on a more convenient and safe side can be selected for sky hook recovery according to geographical and weather reasons, thereby ensuring the safety and reliability of the drone recovery process. The recovery hook device is used in conjunction with a capture rope of a ground recovery device, so that the capture rope enters the long hook groove of the hook body of the recovery hook device along the leading edge of the wing, and the elastic limiting component limits the capture rope from escaping from the long hook groove. The drone has the function of capturing and locking the drone, and can ensure that the drone does not have a decoupling accident during the sky hook recovery process, thereby improving the recovery success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of a small UAV with a recovery hook device according to the present invention; Figure 2 It is a partial schematic diagram of a small UAV with a recovery hook device of the present invention; Figure 3 It is a schematic diagram of the connection between the hook body and the docking rib of the present invention; Figure 4 It is a schematic diagram of the hook body of the present invention; Figure 5 for Figure 4 Right view of; Figure 6 It is a schematic diagram of a mouth-shaped elastic ring of the present invention.

[0016] In the figure: 1, hook body; 11, mounting hole; 12, connecting hole; 13, long hook groove; 14, groove; 2, mouth-shaped elastic ring; 3, mounting screw; 4, docking rib; 5, wing; 51, wing leading edge. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] An embodiment of a small drone with a recovery hook device of the present invention, such as Figure 1 As shown, a recovery hook device is provided at the tip of each of the two wings 5 ​​of the UAV, and the recovery hook device comprises: a hook body 1 and an elastic limiting assembly, the hook body 1 is used to be connected to the wing tip of the wing 5, and a long hook groove 13 with an open end is provided on the hook body 1, and the open end of the long hook groove 13 and the end of the wing leading edge 51 of the wing 5 are smoothly transitioned, and the length of the long hook groove 13 is 1.5 times the diameter of the sky hook recovery capture rope; one end of the elastic limiting assembly is fixedly connected to the hook body 1, and the other end of the elastic limiting assembly is located at the opening of the long hook groove 13.

[0019] like Figure 3 and Figure 4 As shown, the hook body 1 includes: a support plate, such as Figure 2 As shown, the support plate is provided with mounting screws 3, which pass through the mounting holes 11 on the support plate to connect with the docking ribs 4 installed in the wing tip of the wing 5. Specifically, a section of the docking ribs 4 close to the wing leading edge 51 of the wing 5 is connected to the support plate, and the docking ribs 4 are connected to the wing skin at the wing tip. The docking ribs 4 are connected to the wing skin by gluing or riveting, so as to transfer the load of the hanging rope to the wing, complete the load transfer, and ensure reliable force transmission. After installation, the open end of the long hook groove 13 of the hook body 1 faces the wing leading edge 51 of the wing 5, and the inner wall surface of the long hook groove 13 smoothly transitions with the wing leading edge 51.

[0020] like Figure 4 As shown, a triangular plate body is provided on the support plate, an arc plate is provided on one side of the triangular plate body, a long hook groove 13 is formed between the outer arc surface of the arc plate and the side of the triangular plate body, and two connecting holes 12 for connecting the elastic limit assembly are provided on a section close to the free end of the arc plate.

[0021] like Figure 5 As shown, the elastic limiting assembly includes: a mouth-shaped elastic ring 2, and an open end is provided on the mouth-shaped elastic ring 2, and the two ends of the open end are parallel, wherein the two ends of the mouth-shaped elastic ring 2 are connected to the corresponding connecting holes 12. It should be noted that the two connecting holes 12 form a limit for the mouth-shaped elastic ring 2, so that the mouth-shaped elastic ring 2 can only be slightly deformed when subjected to force at its free end.

[0022] like Figure 4 As shown, the width of the long hook groove 13 is 2 mm larger than the diameter of the sky hook recovery capture rope, and a groove 14 is provided on the outer arc surface of the arc plate, wherein, after the mouth-shaped elastic ring 2 is squeezed and deformed by the sky hook recovery capture rope, a section of the mouth-shaped elastic ring 2 away from its open end is squeezed into the groove 14, and the groove is used to limit the position of the mouth-shaped elastic ring 2 during rotation, and at the same time will not prevent the sky hook recovery capture rope from sliding into the bottom of the long hook groove 13.

[0023] like Figure 2 As shown, a weight-reducing groove is provided on the butt joint rib 4.

[0024] How it works When recovering the drone, the recovery hook device of the present invention is used in conjunction with the skyhook recovery capture rope. The skyhook recovery capture rope has been pre-installed before the drone is recovered, and the drone flies toward the skyhook recovery capture rope under the precise guidance of the recovery guidance system. When the leading edge 51 of the drone's wing hits the capture rope, due to the inertia of movement and the certain sweep angle of the leading edge 51 of the wing, the capture rope will slide along the leading edge 51 of the wing from the collision point to the wing tip, and when sliding toward the opening of the long hook groove 13 of the hook body 1, the mouth-shaped elastic ring 2 is deformed to a certain extent by the squeezing force of the skyhook recovery capture rope, and the skyhook recovery capture rope slides into the long hook groove 13 until it reaches the inner bottom, and at the same time, the mouth-shaped elastic ring 2 rebounds to the initial state under the action of the rebound force, that is, the mouth-shaped elastic ring 2 is against the rear wall of the long hook groove 13 of the hook body 1, and the skyhook recovery capture rope cannot be unhooked, so that the drone locks the capture rope, and the safe recovery of the drone is completed. It should be noted that if Figure 1 As shown, two recovery hook devices are respectively installed at the wingtips of the left and right wings of the UAV, so that when the UAV is recovered, the recovery hook device on the more convenient and safe side can be selected for sky hook recovery based on geographical and weather reasons.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A small UAV with a recovery hook device, characterized in that: include: A recovery hook device is provided at each tip of the two wings (5) of the UAV; The recovery hook device comprises: a hook body (1) and an elastic limiting assembly, wherein the hook body (1) is used to be connected to the wing tip of the wing (5), and a long hook groove (13) with an open end is provided on the hook body (1), and the open end of the long hook groove (13) and the end of the wing leading edge (51) of the wing (5) are smoothly transitioned; one end of the elastic limiting assembly is fixedly connected to the hook body (1); and the other end of the elastic limiting assembly is located at the opening of the long hook groove (13).

2. A small UAV with a recovery hook device according to claim 1, characterized in that: The hook body (1) comprises a support plate connected to the wing tip of the wing (5), a triangular plate body being arranged on the support plate, an arc plate being arranged on one side of the triangular plate body, a long hook groove (13) being formed between the outer arc surface of the arc plate and the side of the triangular plate body, and a connection hole (12) for connecting an elastic limit assembly being arranged on a section close to the free end of the arc plate.

3. A small UAV with a recovery hook device according to claim 2, characterized in that: The elastic limiting component comprises: a mouth-shaped elastic ring (2), wherein the mouth-shaped elastic ring (2) is provided with an open end, wherein two ends of the open end are parallel, wherein two connecting holes (12) are provided on a section close to the free end of the arc-shaped plate, and the two ends of the mouth-shaped elastic ring (2) are connected to the corresponding connecting holes (12).

4. A small UAV with a recovery hook device according to claim 3, characterized in that: A groove (14) is provided on the outer arc surface of the arc plate, wherein after the mouth-shaped elastic ring (2) is squeezed and deformed by the skyhook recovery capture rope, a section of the mouth-shaped elastic ring (2) away from its open end is squeezed into the groove (14).

5. A small UAV with a recovery hook device according to claim 2, characterized in that: A butt joint rib (4) is installed in the wing tip of the wing (5), and a section of the butt joint rib (4) close to the wing leading edge (51) of the wing (5) is connected to the support plate.

6. A small UAV with a recovery hook device according to claim 5, characterized in that: A weight-reducing groove is provided on the butt joint rib (4).

7. The small UAV with a recovery hook device according to claim 1, characterized in that: The length of the long hook groove (13) is at least 1.5 times the diameter of the skyhook recovery capture rope.

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