A net-controllable unmanned aerial vehicle net capturing device

Abstract

The utility model relates to a net capturing and launching device technical field, especially a net capturing and launching device of unmanned plane controllable net, the utility model provides such a net capturing and launching device of unmanned plane controllable net, including protective sheath, gas cylinder, gas injection device, back end cover, fixed screw, protective cover, pole body, connecting pipe, front end cover, nylon net, counterweight and valve, the gas cylinder is installed on the protective sheath, and its export end is connected with gas injection device, and the gas cylinder top port is installed with valve, the valve is communicated with gas injection device inner passage, the outer side of gas injection device is equipped with the protective cover, and the protective cover is fixedly installed on the gas cylinder shell. By closing the nylon net and the counterweight and sealing by the front end cover, the low resistance streamlined bullet is formed when launching, the air resistance of the initial stage of flight is remarkably reduced, the net can obtain higher initial speed and farther range, and the possibility of intercepting medium and long distance unmanned plane is provided.

Description

Technical Field

[0001] This utility model relates to the field of capture net launching technology, and in particular to a controllable capture net launching device for unmanned aerial vehicles (UAVs). Background Technology

[0002] In recent years, drones have been widely used in aerial photography, logistics, agriculture, and other fields due to their low cost, ease of operation, and high maneuverability. However, the problem of "unauthorized flights" has also become increasingly frequent. Drones illegally entering sensitive areas such as airports, military bases, and major event venues can lead to serious consequences such as flight delays, information leaks, and terrorist attacks. Net-based countermeasures, as a low-damage interception technology, are widely used, but existing solutions have significant drawbacks:

[0003] First, the high drag during flight results in insufficient effective range. Most existing devices fully deploy their nets the moment of launch, and the enormous air resistance they experience during flight rapidly consumes launch energy, causing a rapid decrease in flight speed and a significant reduction in range. This characteristic makes them difficult to effectively intercept UAV targets at medium to long ranges.

[0004] Secondly, the trajectory stability is poor, resulting in a low interception success rate. A fully deployed net is significantly affected by wind and airflow disturbances during flight, causing unpredictable deviations in its trajectory. For high-speed moving drones or those in complex wind environments, current interception technologies have limited tolerance and a low success rate.

[0005] Therefore, there is an urgent need for a medium- to long-range net launching device that can effectively extend the flight distance of the net and improve the stability of the flight trajectory, thereby achieving accurate and reliable interception. Utility Model Content

[0006] In order to overcome the shortcomings mentioned in the background art, the present invention provides a drone-based net-capturing device with controllable net launching capability.

[0007] A controllable drone-launched net-catching device includes a protective sleeve, a gas cylinder, a gas injection device, a rear end cap, fixing screws, a protective cover, a rod, a connecting pipe, a front end cap, a nylon net, counterweights, a valve, and a wired control linkage system. The gas cylinder is mounted on the protective sleeve, and its outlet end is connected to the gas injection device. A valve is installed at the top port of the gas cylinder, and the valve communicates with the internal channel of the gas injection device. A protective cover is fitted over the gas injection device and is fixedly installed on the outer shell of the gas cylinder. The right end of the protective cover is connected to the rod. The outlet of the gas injection device communicates with the inner cavity of the rod through the connecting pipe. The left end of the protective cover is fixedly installed with a rear end cap by multiple fixing screws arranged circumferentially. Four counterweights are embedded in the edge of the nylon net. The nylon net is gathered and constrained into a cylinder and housed in the inner cavity of the rod. The right end of the rod is sealed by the front end cap, which has a frictional constraint relationship with the gathered nylon net. The rod has a built-in wired control linkage system.

[0008] Optionally, the wire-controlled linkage system includes a pull wire and a constraint plate, a pin and a locking ring. The pull wire is connected to the left end of the rod body, and the free end of the pull wire is connected to the pin. The constraint plate is connected to the left end of the front cover through a support rod. The pin and the constraint plate form a plug-in engagement relationship. Locking rings are connected to the four counterweights on the nylon net. All locking rings are kept in a retracted state by the locking constraint of the pin.

[0009] Optionally, the draw wire is made of high-strength, low-elongation fluorocarbon wire.

[0010] Optionally, it also includes sealing gaskets, with sealing gaskets connected to the outer periphery of both the left and right ports of the connecting pipe.

[0011] Optionally, the screw of the fixing screw extends to the right and is threaded to the left end cap of the rod.

[0012] Optionally, the inner side of the front cover is provided with an annular shoulder, which forms a limiting engagement with the inner wall of the rod port.

[0013] The beneficial effects of this utility model are as follows: 1. By gathering the nylon net and counterweight and sealing them with the front cover, a streamlined projectile with low drag is formed during launch, which significantly reduces the air resistance in the initial stage of flight, enabling the net to obtain a higher initial velocity and a longer range, thus providing the possibility of intercepting medium and long-range UAVs.

[0014] 2. The flight distance is precisely controlled by utilizing the physical length of the pull line. When the pull line is taut, the pin is triggered to separate from the constraint plate through a purely mechanical means, which can release the constraint on the counterweight in a timely and reliable manner, ensuring that the nylon net unfolds at the predetermined target position and improving the interception accuracy.

[0015] 3. The net remains folded for most of its flight time, resulting in a small cross-sectional area and significantly reduced susceptibility to crosswinds and airflow, leading to a more stable flight trajectory. It only deploys momentarily at the end of the flight, shortening its exposure time and making it suitable for operations in higher wind speeds. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the protective sleeve, gas cylinder, and gas injection device of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the gas injection device, connecting pipe, and sealing gasket of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the constraint disc, pin, and locking ring components of this utility model.

[0021] The markings in the attached diagram are as follows: 1: Protective cover, 2: Gas cylinder, 3: Gas injection device, 4: Rear end cover, 5: Fixing screw, 6: Protective cover, 7: Rod body, 8: Connecting pipe, 9: Sealing gasket, 10: Front end cover, 11: Nylon mesh, 12: Counterweight, 13: Valve, 14: Pull wire, 15: Constraint disc, 16: Pin, 17: Locking ring. Detailed Implementation

[0022] Example: A controllable drone-based net-capturing device, such as... Figures 1-5 As shown, the device includes a protective sleeve 1, a gas cylinder 2, a gas injection device 3, a rear end cap 4, fixing screws 5, a protective cover 6, a rod 7, a connecting pipe 8, sealing gaskets 9, a front end cap 10, a nylon mesh 11, a counterweight 12, a valve 13, and a wired control linkage system. The gas cylinder 2 is installed on the protective sleeve 1, and its outlet end is connected to the gas injection device 3. A valve 13 is installed at the top end of the gas cylinder 2, and this valve 13 communicates with the inner channel of the gas injection device 3. A protective cover 6 is fitted over the gas injection device 3 and is fixedly installed on the outer shell of the gas cylinder 2 for protection. A rod 7 is connected to the right end of the protective cover 6, forming the launching tube of the net. The outlet of the gas injection device 3 communicates with the inner cavity of the rod 7 through the connecting pipe 8. Sealing gaskets 9 are connected to the outer periphery of both ends of the connecting pipe 8 to improve the sealing between the gas injection device 3 and the rod 7. The left end of the protective cover 6 is connected to the rod 7 through a circumferential connection. Multiple fixing screws 5 are used to fix the rear end cover 4. The screws of the fixing screws 5 extend to the right and are threaded to the left end cover of the rod body 7, thereby fastening the rear end cover 4, the protective cover 6 and the rod body 7 into one unit. Four counterweights 12 are embedded in the edge of the nylon mesh 11. The nylon mesh 11 is gathered and constrained into a cylinder and housed in the inner cavity of the rod body 7. The right end of the rod body 7 is sealed by the front end cover 10. The front end cover 10 and the gathered nylon mesh 11 are in a frictional constraint relationship. The rod body 7 has a built-in wire control linkage system. The inner side of the front end cover 10 is provided with a ring-shaped shoulder. The shoulder forms a limiting engagement with the inner wall of the end of the rod body 7. This allows the front end cover 10 to withstand the air pressure pre-tightening force before launch to ensure a seal. After launch, when subjected to external airflow, its windward surface can generate sufficient torque to make it easy to detach from the rod body 7, achieving a unity of reliable sealing and efficient detachment.

[0023] like Figure 2 and Figure 5As shown, the wire-controlled linkage system includes a pull wire 14, a constraint plate 15, a pin 16, and a locking ring 17. The pull wire 14 is connected to the left end of the rod body 7, and the pin 16 is connected to the free end of the pull wire 14. The constraint plate 15 is connected to the left end of the front cover 10 through a support rod. The pin 16 and the constraint plate 15 form a plug-in engagement relationship. Locking rings 17 are connected to the four counterweights 12 on the nylon net 11. All locking rings 17 are kept in a folded state by the locking constraint of the pin 16, so that the nylon net 11 is kept in a folded state as a whole. The pull wire 14 is made of high-strength, low-elongation fluorocarbon wire. fluorocarbon wire has extremely high tensile strength and is lightweight, which can effectively withstand the huge tensile force at the moment of launch without breaking. Its low elongation ensures the stability of the trigger length, avoids the error in the unfolding distance caused by the stretching of the wire, and improves the accuracy and reliability of the timing unfolding.

[0024] When this device is needed, first, gather and roll the nylon net 11, which has four counterweights 12 embedded in its edges, into a cylindrical shape. Insert it into the inner cavity of the rod body 7 and secure it by snapping it into the front cover 10 at the right end of the rod body 7. During this process, ensure that the locking ring 17 on the counterweight 12 is fitted onto the pin 16, and that the pin 16 and the constraint plate 15 remain in a locked position. Then, open the valve 13. The high-pressure gas in the gas cylinder 2 passes through the channel inside the gas injection device 3 and then through the sealed gas path formed by the connecting pipe 8 and the sealing gasket 9, filling the left end of the rod body 7 in preparation for launch. When the gas injection device 3 is triggered, the high-pressure gas is released instantaneously, generating a powerful thrust that propels the entire net assembly (including the front cover 10, the constraint plate 15, the gathered nylon net 11, and the counterweights 12 constrained by the pin 16) together as a single projectile. Overcoming the snapping friction between the front cover 10 and the end of the rod body 7, the projectile is ejected forward at high speed. In the initial stage of flight, the net... Because it is mechanically locked and remains in a retracted state, the air resistance is extremely low. At this time, the front cover 10 and its constraint plate 15 fly together with the projectile. At the same time, the pull line 14, which is fixed to the left end of the rod 7, is pulled and extended. When the projectile flies to the predetermined distance and the pull line 14 is fully taut, the huge pulling force it generates overcomes the insertion force between the pin 16 and the constraint plate 15, causing the pin 16 to disengage from the constraint plate 15. The pin 16 is then pulled out from all the locking rings 17, instantly releasing the restraint on the four counterweights 12. Immediately afterwards, the freed counterweights 12 fly rapidly in all directions due to their own inertia. Their huge kinetic energy first completely overcomes the weak friction between the front cover 10 and the net, pushing the front cover 10 away from the projectile's trajectory. Then, it powerfully drags the nylon net 11, which is fixed to it, to fully unfold, forming a huge interception surface. Finally, the unfolded nylon net 11 wraps around and entangles the rotor or arm of the target UAV, achieving effective capture.

Claims

1. A controllable drone-launched net-catching device, characterized in that: The system includes a protective sleeve (1), a gas cylinder (2), a gas injection device (3), a rear end cap (4), fixing screws (5), a protective cover (6), a rod (7), a connecting pipe (8), a front end cap (10), a nylon mesh (11), a counterweight (12), a valve (13), and a wired control linkage system. The gas cylinder (2) is installed on the protective sleeve (1), and its outlet end is connected to the gas injection device (3). A valve (13) is installed at the top end of the gas cylinder (2), and the valve (13) communicates with the inner channel of the gas injection device (3). A protective cover (6) is fitted on the outside of the gas injection device (3), and the protective cover (6) is fixedly installed on the gas cylinder. (2) On the outer shell, the right end of the protective cover (6) is connected to the rod (7). The outlet of the gas injection device (3) is connected to the inner cavity of the rod (7) through the connecting pipe (8). The left end of the protective cover (6) is fixedly installed with the rear end cover (4) by multiple fixing screws (5) arranged along the circumference. Four counterweights (12) are embedded on the edge of the nylon mesh (11). The nylon mesh (11) is gathered and constrained into a cylinder and housed in the inner cavity of the rod (7). The right end of the rod (7) is sealed by the front end cover (10). The front end cover (10) and the gathered nylon mesh (11) are in a frictional constraint relationship. The rod (7) has a built-in wire control linkage system.

2. The unmanned aerial vehicle (UAV) net-launching device with controllable net control according to claim 1, characterized in that: The wire-controlled linkage system includes a pull wire (14), a constraint plate (15), a pin (16), and a locking ring (17). The pull wire (14) is connected to the left end of the rod (7), and the pin (16) is connected to the free end of the pull wire (14). The constraint plate (15) is connected to the left end of the front cover (10) through a support rod. The pin (16) and the constraint plate (15) form a plug-in fit relationship. The four counterweights (12) on the nylon mesh (11) are all connected to the locking ring (17). All locking rings (17) are kept in a closed state by the locking constraint of the pin (16).

3. The unmanned aerial vehicle (UAV) net-launching device with controllable net control according to claim 2, characterized in that: The draw wire (14) is made of high-strength, low-ductility fluorocarbon wire.

4. The unmanned aerial vehicle (UAV) net-launching device with controllable net control according to claim 3, characterized in that: It also includes sealing gaskets (9), and sealing gaskets (9) are connected to the outer periphery of both the left and right ports of the connecting pipe (8).

5. The unmanned aerial vehicle (UAV) net-launching device with controllable net control according to claim 4, characterized in that: The screw of the fixing screw (5) extends to the right and is threaded to the left end cap of the rod body (7).

6. The unmanned aerial vehicle (UAV) net-launching device with controllable net control according to claim 5, characterized in that: The inner side of the front cover (10) is provided with a ring-shaped shoulder, which forms a limiting engagement with the inner wall of the rod (7) port.

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