Police arresting type unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicles, and discloses a police arresting type unmanned aerial vehicle which comprises an unmanned aerial vehicle body, a throwing mechanism and a net releasing mechanism, and a mounting plate is arranged on the unmanned aerial vehicle body; the throwing mechanism comprises a suspension main shaft rotationally connected with the mounting plate, the end of the suspension main shaft is fixedly connected with a rotating arm, and a discharging barrel is arranged on the side, away from the suspension main shaft, of the rotating arm; the net placing mechanism comprises a spiral sliding groove formed in the inner wall of the discharging barrel, a rotary counterweight head is placed in the spiral sliding groove, a push plate is arranged in the middle of the discharging barrel, a sliding plate sliding along the spiral sliding groove is arranged on the outer side of the push plate, the discharging barrel is of a hollow structure with the bottom open, and a capturing net is placed in a cavity formed by the interior of the discharging barrel and the push plate. According to the unmanned aerial vehicle, the rotating arm is arranged to drive the discharging barrel to rotate, so that the capturing net can perform horizontal projectile motion when being separated from the discharging barrel, and the range of releasing the capturing net by the unmanned aerial vehicle is larger.

Description

Technical Field

[0001] The present invention relates to the technical field of drones, and specifically to a police arrest drone. Background Art

[0002] A police arrest drone is a drone specifically designed for police law enforcement and security tasks, mainly used for arresting or controlling specific targets, including net-launching drones and robotic arm drones, etc. Among them, the net-launching drone is equipped with a capture net device. When the drone approaches the target, the capture net is ejected through remote control or automatic control to catch the target. This type of drone is suitable for capturing targets that are more flexible during the arrest operation, such as a suspect on the run.

[0003] However, when some existing net-launching drones are working, the drone needs to fly directly above the suspect, and the capture net is unfolded in a free-fall manner to cover the suspect. Therefore, there needs to be enough space above the suspect for the drone to stay, and the drone also needs to fly exactly above the suspect, which has many limitations. Therefore, it needs to be improved. Summary of the Invention

[0004] The present invention provides a police arrest drone, which solves the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A police arrest drone includes a drone body, an installation plate is arranged on the drone body, and further includes a throwing mechanism and a net-releasing mechanism; the throwing mechanism includes a suspension main shaft rotatably connected to the installation plate, a rotating arm is fixedly connected to the end of the suspension main shaft, a feeding barrel is arranged on the side of the rotating arm away from the suspension main shaft, and a high-pressure gas generating component for adjusting the internal air pressure of the feeding barrel is arranged on the suspension main shaft; the net-releasing mechanism includes a spiral chute arranged on the inner wall of the feeding barrel, a rotating counterweight is placed inside the spiral chute, a push plate is arranged in the middle of the feeding barrel, a sliding plate that slides along the spiral chute is arranged on the outside of the push plate, the feeding barrel is a hollow structure with an open bottom, a capture net is placed in the cavity formed by the inside of the feeding barrel and the push plate, a pulling rope is arranged on the outer edge of the capture net, the free end of the pulling rope is connected to the rotating counterweight, and a blocking component for restricting the push plate from falling inside the feeding barrel by its own weight is arranged on the side wall of the feeding barrel; when the high-pressure gas generating component increases the internal air pressure of the feeding barrel, the high-pressure gas pushes the push plate to move in a direction away from the center of the feeding barrel, and while the sliding plate and the rotating counterweight move along the spiral chute, the push plate and the rotating counterweight rotate relative to the center of the feeding barrel.

[0007] As a preferred technical solution of the present invention, a plurality of spiral chutes are provided on the inner wall of the feeding bucket. The number of spiral chutes is greater than or equal to three. The push plate is of a fan-shaped structure, and the number of push plates is the same as that of the spiral chutes. After the push plates are brought close together, they form a disc structure. A vertical rod is provided at a position of the push plate close to the center of the disc. A fastening sleeve is sleeved outside the vertical rod. A limiting protrusion is provided on one side of the vertical rod away from the center of the feeding bucket. A guiding inclined groove matching the limiting protrusion is provided on the inner wall of the fastening sleeve. When the vertical rod moves along the guiding inclined groove in a direction away from the fastening sleeve, the vertical rods move closer to each other. A return spring for driving the vertical rod to move in a direction away from the fastening sleeve is provided inside the fastening sleeve. A limiting post is provided at the gap on the side of the push plate close to the center of the feeding bucket. When the push plate abuts against the limiting post, the outer diameter of the limiting protrusion is greater than the minimum inner diameter of the guiding inclined groove. Through holes are provided on the outer side of the push plate, and the pulling ropes penetrate and connect the through holes.

[0008] As a preferred technical solution of the present invention, the blocking assembly includes a blocking slide rod slidably connected to the side wall of the feeding bucket. A blocking triangular head cooperating with the push plate is provided at one end of the blocking slide rod close to the center of the feeding bucket. A limiting plate is provided at the end of the blocking slide rod away from the center of the feeding bucket. A blocking spring for driving the blocking slide rod to move towards the center of the feeding bucket is provided between the limiting plate and the feeding bucket.

[0009] As a preferred technical solution of the present invention, the end of the rotating arm is detachably connected to the feeding bucket, and a clamping assembly for fixing the feeding bucket is provided on the rotating arm. The clamping assembly includes a blocking ring provided at the end of the feeding bucket. An annular gap is left between the blocking ring and the feeding bucket. A first hanging block is fixedly connected to the end of the rotating arm away from the main shaft. A fixed limiting block matching the annular gap is provided on the first hanging block. A second hanging block is provided on one side of the rotating arm close to the main shaft. A blocking slide rod is slidably connected to the second hanging block. A movable limiting block matching the annular gap is provided at the end of the blocking slide rod close to the feeding bucket. A limiting spring for driving the movable limiting block to move towards the feeding bucket is provided between the movable limiting block and the second hanging block.

[0010] As a preferred technical solution of the present invention, the mounting plate is detachably connected to the drone body through fixing bolts. A throwing motor is provided on the mounting plate. The output shaft of the throwing motor is fixedly connected with a driving bevel gear, and the driving bevel gear is meshed with a driven bevel gear fixedly connected with the suspension main shaft.

[0011] As a preferred technical solution of the present invention, the high-pressure gas generating assembly includes a high-pressure gas cylinder disposed on the rotating arm, and the gas outlet end of the high-pressure gas cylinder is connected to the inside of the material discharging bucket through a gas guide pipe. The high-pressure gas cylinder is disposed at one end of the rotating arm away from the material discharging bucket, and a fastener for fixing the high-pressure gas cylinder is provided on the rotating arm. Locking bolts cooperating with the rotating arm are provided on both sides of the fastener. The gas outlet end of the high-pressure gas cylinder is connected to the gas guide pipe, and an air inlet nozzle is provided at the free end of the gas guide pipe. A quick-release air nozzle cooperating with the air inlet nozzle is provided on the material discharging bucket.

[0012] The present invention has the following beneficial effects:

[0013] By arranging the rotating arm to drive the material discharging bucket to rotate, when the capture net is separated from the material discharging bucket, it can perform a horizontal projectile motion, so that the range of the capture net released by the unmanned aerial vehicle is larger, and the landing point can be controlled. At the same time, the cooperation of the fastening sleeve and the vertical rod is also set to realize the delayed unfolding of the capture net, so that the landing point range of the capture net is larger, and the landing point position of the capture net is also more controllable, making the control of the capture-type unmanned aerial vehicle more accurate and adaptable to different capture scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a police capture-type unmanned aerial vehicle.

[0016] Figure 2 It is a front view of a police capture-type unmanned aerial vehicle.

[0017] Figure 3 It is a schematic structural diagram of a throwing mechanism in a police capture-type unmanned aerial vehicle.

[0018] Figure 4 It is Figure 3 front view of

[0019] Figure 5 It is a schematic structural diagram of a clamping assembly in a police capture-type unmanned aerial vehicle.

[0020] Figure 6 It is a schematic structural diagram of the inside of a material discharging bucket in a police capture-type unmanned aerial vehicle.

[0021] Figure 7 It is a schematic structural diagram of a blocking assembly in a police capture-type unmanned aerial vehicle.

[0022] Figure 8 Schematic structural diagram of the cooperation between the fastening sleeve and the vertical rod in a police arrest drone.

[0023] Figure 9 For Figure 8 Partial enlarged schematic diagram of A in

[0024] Figure 10 Schematic structural diagram of the push plate after closing in a police arrest drone.

[0025] Figure 11 For Figure 10 Partial enlarged schematic diagram of B in

[0026] Figure 12 Schematic structural diagram of the arrest net after deployment in a police arrest drone.

[0027] In the figure: 1, drone body; 2, mounting plate; 3, fixing bolt; 4, throwing mechanism; 5, net releasing mechanism; 6, rotating arm; 7, air inlet nozzle; 8, relief hole; 9, air duct; 10, mounting seat; 11, relief opening; 12, high-pressure gas cylinder; 13, fastener; 14, locking bolt; 15, high-pressure gas generating assembly; 16, clamping assembly; 17, material storage bucket; 18, quick-release air nozzle; 19, throwing motor; 20, driving helical gear; 21, driven helical gear; 22, suspension main shaft; 23, wire loop; 24, first suspension block; 25, fixed limit block; 26, blocking ring; 27, movable limit block; 28, limit spring; 29, second suspension block; 30, limit slide bar; 31, spiral chute; 32, rotating counterweight; 33, push plate; 34, sliding plate; 35, pulling rope; 36, blocking assembly; 37, limit plate; 38, blocking spring; 39, blocking slide bar; 40, blocking triangular head; 41, through hole; 42, fastening sleeve; 43, vertical rod; 44, limit protrusion; 45, guiding inclined groove; 46, limit post; 47, return spring; 48, arrest net. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] In one embodiment, please refer to Figures 1-12, A police arrest drone, including a drone body 1, on which a mounting plate 2 is provided. The mounting plate 2 is arranged directly below the drone body 1. Fixing bolts 3 are provided at the corners of the mounting plate 2, and the fixing bolts 3 are fixed directly below the drone body 1 by means of threaded connection. It also includes a throwing mechanism 4 and a net releasing mechanism 5;

[0030] The throwing mechanism 4 includes a suspension main shaft 22 rotatably connected to the middle of the lower surface of the mounting plate 2. The lower part of the suspension main shaft 22 is connected to the middle of a rotating arm 6. A feeding bucket 17 is arranged below the left side of the rotating arm 6. The feeding bucket 17 is a U-shaped rotating body structure, and the lower part of the feeding bucket 17 is in an open state. A high-pressure gas generating component 15 is arranged on the rotating arm 6. The high-pressure gas generating component 15 can rapidly increase the air pressure inside the feeding bucket 17, thereby blowing out the capture net 48 to achieve the effect of spreading the net;

[0031] The net releasing mechanism 5 includes a spiral chute 31 arranged on the inner wall of the feeding bucket 17. The lower end of the spiral chute 31 is in an open state. A rotating counterweight 32 is placed inside the spiral chute 31. And a push plate 33 is arranged inside the feeding bucket 17. The push plate 33 is located above the rotating counterweight 32. And a sliding plate 34 is arranged outside the push plate 33. The sliding plate 34 can move along the spiral chute 31. When the air pressure inside the feeding bucket 17 increases, the air flow can push the push plate 33 downward. The sliding plate 34 outside the push plate 33 moves downward along the spiral chute 31, thereby pushing the rotating counterweight 32 downward. And a cavity is formed between the push plate 33 and the inside of the feeding bucket 17. The capture net 48 can be placed in this cavity, that is, the capture net 48 is placed above the push plate 33. After the capture net 48 is unfolded, it is a hemispherical structure with a raised middle. The outer edge of the capture net 48 is connected to the upper end of a pulling rope 35, and the lower end of the pulling rope 35 is connected to the rotating counterweight 32. And a blocking component 36 is arranged on the side wall of the feeding bucket 17. The blocking component 36 can limit the downward movement of the push plate 33. When the air pressure inside the feeding bucket 17 is the same as the external atmospheric pressure, at this time, the sum of the gravity of the push plate 33 and the capture net 48 cannot push open the blocking component 36. At this time, the blocking component 36 restricts the push plate 33 inside the feeding bucket 17. But when the high-pressure gas generating component 15 increases the air pressure in the cavity above the push plate 33, the high-pressure gas pushes the push plate 33 downward. At this time, the push plate 33 can push open the blocking component 36, so that the push plate 33 pushes the rotating counterweight 32 downward through the sliding plate 34. While the rotating counterweight 32 and the push plate 33 move downward along the spiral chute 31, the rotating counterweight 32 and the push plate 33 will also rotate. The push plate 33 and the rotating counterweight 32 are both subjected to centrifugal forces towards the outside. Therefore, when the rotating counterweight 32 is separated from the spiral chute 31, the rotating counterweight 32 will fly outward, and the rotating counterweight 32 drives the capture net 48 to unfold, thereby achieving the effect of releasing the net.

[0032] In one case of the present embodiment, a plurality of spiral grooves 31 are provided on the inner wall of the discharge barrel 17, and the number of the spiral grooves 31 needs to be greater than or equal to three. In the present application, six spiral grooves 31 are provided, and the six spiral grooves 31 are evenly distributed relative to the center of the discharge barrel 17. The number of push plates 33 is the same as the number of the spiral grooves 31, and therefore six push plates 33 are also provided. The six push plates 33 just form a disc structure with gaps between each other, and vertical rods 43 are vertically provided at the top corners of the push plates 33. The six vertical rods 43 just form a cylinder with gaps, and a fastening sleeve 42 is sleeved on top of the cylinder. After the fastening sleeve 42 simultaneously sleeves the six vertical rods 43, the six push plates 33 are retracted into a disc structure.A limiting protrusion 44 is provided on the outer side of the vertical rod 43, and a guiding inclined groove 45 is provided on the inner wall of the fastening sleeve 42. The upper surface of the guiding inclined groove 45 is a downwardly inclined inclined surface. After the fastening sleeve 42 is sleeved on the outside of the vertical rod 43, the limiting protrusion 44 falls on the guiding inclined groove 45. Since there is a gap between the push plates 33, when the limiting protrusion 44 moves downward along the guiding inclined groove 45, the gap between the push plates 33 will gradually decrease. When there is a gap between the push plates 33, a limiting column 46 is inserted into the center of the disc structure composed of six push plates 33. The limiting column 46 is made of a slightly deformable wooden rod. After the limiting column 46 is inserted into the central gap, the wooden rod will be stuck, and the push plates 33 cannot be close to each other. At this time, the disc structure composed of the limiting protrusions 44 The outer diameter of the shaped structure is larger than the minimum inner diameter of the guide inclined groove 45. At this time, the vertical rod 43 cannot be separated from the inside of the fastening sleeve 42. A return spring 47 is arranged inside the fastening sleeve 42. The return spring 47 pushes the vertical rod 43 downward, so that the limiting protrusion 44 moves along the guide inclined groove 45, and the push plate 33 is retracted. At this time, the limiting post 46 cannot be disengaged from the push plate 33. However, when the push plate 33 rotates at a high speed along the inside of the discharge barrel 17, the push plates 33 are separated from each other due to the centrifugal force. At this time, the limiting protrusion 44 is pressed against the inner wall of the fastening sleeve 42. At this time, the gap between the push plate 33 increases, so that the limiting post and the push plate 33 are disengaged and fall off. That is, only when the entire device releases the catching net 48, the limiting post The limit post 46 plays a role of insurance. When the limit post 46 falls, the speed of the push plate 33 gradually decreases due to the existence of wind resistance during the rotation of the push plate 33. At this time, the centrifugal force on the push plate 33 gradually decreases, and the elastic force of the return spring 47 is greater than the upward separation of the centrifugal force on the guide inclined groove 45. At this time, the return spring 47 will push the vertical rod 43 to move downward relative to the fastening sleeve 42, and the push plates 33 will move closer to each other. When the vertical rod 43 is completely separated from the fastening sleeve 42, the push plate 33 will separate outward again due to the action of centrifugal force to achieve the separation effect. Through this delayed deployment method, after the catching net 48 is released from the inside of the discharge barrel 17, the catching net 48 will not be immediately released. As the rotating counterweight head 32 unfolds, it is necessary to wait until the speed decreases a little and the vertical rod 43 is separated from the fastening sleeve 42 before the catching net 48 can be unfolded. Since the mass of the catching net 48 itself is relatively small and the catching net 48 falls from the air, the catching net 48 has enough time to unfold. Therefore, even if the speed slows down, the centrifugal force generated by the rotating counterweight head 32 during rotation can still unfold the catching net 48. The effect of delayed unfolding is achieved through the cooperation of the vertical rod 43 and the fastening sleeve 42, so that the catching net 48 can maintain a smaller volume for a period of time during the process of being thrown after being separated from the discharge barrel 17, so that the catching net 48 can be thrown a longer distance, which is convenient for the projection of the catching net 48.In order to better limit the retracted state of the capture net 48 in the initial stage, through holes 41 are provided on the outer side of the push plate 33, and the pulling rope 35 needs to pass through the through holes 41. Thus, when the vertical rod 43 and the fastening sleeve 42 are not separated, the capture net 48 will remain above the push plate 33. The time when the fastening sleeve 42 restricts the expansion of the push plate 33 is an optimal solution. In some simple working conditions, the push plate 33 can be designed as a single disc-shaped structure. At this time, the push plate 33 only bears the thrust of the air flow and serves as the effect of a piston. The push plate 33 is not processed with a limit for the pulling rope 35. The air flow pushes the rotating counterweight 32 to move along the spiral chute 31 through the push plate 33. After the push plate 33 is separated from the discharge barrel 17, the rotating counterweight 32 will quickly drive the capture net 48 to expand. At this time, the capture net 48 can still fly a certain distance under the action of inertia. However, compared with the delayed expansion process by setting the fastening sleeve 42 and the vertical rod 43, the directly expanded moving distance is shorter.

[0033] In one case of this embodiment, the blocking assembly 36 includes a blocking slide bar 39 slidably connected to the side wall of the discharge barrel 17. The blocking slide bar 39 is horizontally arranged and needs to avoid the spiral chute 31 to prevent interference with the movement of the rotating counterweight 32. A blocking triangular head 40 cooperating with the push plate 33 is provided at one end of the blocking slide bar 39 close to the center of the discharge barrel 17. A limiting plate 37 is provided at the end of the blocking slide bar 39 far from the center of the discharge barrel 17. A blocking spring 38 for driving the blocking slide bar 39 to move towards the center of the discharge barrel 17 is provided between the limiting plate 37 and the discharge barrel 17. The upper and lower sides of the blocking triangular head 40 are inclined surfaces. The upper inclined surface facilitates the downward sliding of the push plate 33 along the surface. The lower inclined surface facilitates the retraction of the blocking triangular head 40 when the push plate 33 is pressed into the discharge barrel 17. There is a gap between the push plate 33 and the inner wall of the discharge barrel 17. When the blocking triangular head 40 abuts against the inner wall of the discharge barrel 17, the push plate 33 can move over the blocking triangular head 40. That is to say, when the push plate 33 is only affected by gravity, the horizontal component force of the push plate 33 through the blocking triangular head 40 cannot push the blocking spring 38 to compress. At this time, the blocking triangular head 40 will block the push plate 33 and the push plate 33 cannot move downward. However, when the air pressure above the push plate 33 increases and the air flow pushes the push plate 33 to move downward, the horizontal component force generated by the push plate 33 at this time increases, so that the push plate 33 can push open the blocking triangular head 40 and move downward, thus realizing that the capture net 48 will only be thrown and expanded when the high-pressure gas generating assembly 15 is working.

[0034] In a case of this embodiment, the end of the rotating arm 6 is detachably connected to the material discharging bucket 17, and a clamping assembly 16 for fixing the material discharging bucket 17 is arranged on the rotating arm 6. By designing the material discharging bucket 17 and the rotating arm 6 to be detachably connected, the subsequent maintenance of the rotating arm 6 is more convenient, the catching net 48 can be installed more conveniently, and different-sized catching nets 48 can also be replaced by replacing the material discharging bucket 17. The clamping assembly 16 includes a blocking ring 26 arranged at the upper end of the material discharging bucket 17. There is an annular gap between the blocking ring 26 and the top surface of the material discharging bucket 17. A first hanging block 24 is arranged at the left end of the lower surface of the rotating arm 6, and a fixed limiting block 25 is arranged at the lower end of the first hanging block 24. The fixed limiting block 25 can just be inserted into the annular gap. And a second hanging block 29 is arranged at a position on the lower surface of the rotating arm 6 close to the left. A blocking slide rod 39 arranged in the left-right direction is slidably connected to the lower end of the second hanging block 29. An active limiting block 27 is arranged at the left end of the blocking slide rod 39. The active limiting block 27 can also just be inserted into the annular gap. A limiting spring 28 is arranged between the active limiting block 27 and the second hanging block 29. The limiting spring 28 is sleeved outside the blocking slide rod 39. The limiting spring 28 will push the active limiting block 27 to the left. Therefore, when both the active limiting block 27 and the fixed limiting block 25 are inserted into the annular gap, the limiting spring 28 pushes the active limiting block 27 to the left, and the active limiting block 27 and the fixed limiting block 25 can clamp the upper part of the material discharging bucket 17 from left and right, thus realizing the fixation of the material discharging bucket 17. When it is necessary to remove the material discharging bucket 17, pull the blocking slide rod 39 to the right. At this time, the active limiting block 27 is disengaged from the annular gap above the material discharging bucket 17. Move the material discharging bucket 17 to the right. At this time, the fixed limiting block 25 is also disengaged from the annular gap. At this time, the material discharging bucket 17 is completely disengaged from the rotating arm 6, realizing the disassembly of the material discharging bucket 17.

[0035] In a case of this embodiment, a throwing motor 19 is arranged on the left side of the lower surface of the mounting plate 2. The output shaft of the throwing motor 19 is fixedly connected with a driving bevel gear 20. The driving bevel gear 20 is meshed with a driven bevel gear 21 fixedly connected with the suspension main shaft 22. Therefore, the throwing motor 19 can drive the rotating arm 6 to rotate through gear transmission, providing centrifugal force to the material discharging bucket 17, which is convenient for throwing out the catching net 48 subsequently.

[0036] In a case of this embodiment, the high-pressure gas generating assembly 15 includes a high-pressure gas cylinder 12 disposed on the upper right side of the rotating arm 6. The gas outlet end of the high-pressure gas cylinder 12 is connected to the right end of the air duct 9, and the left end of the air duct 9 can be communicated with the inside of the charging bucket 17, so as to release high-pressure gas into the inside of the charging bucket 17 through the high-pressure gas cylinder 12, facilitating the subsequent ejection of the capture net 48. Fasteners 13 are sleeved on the left and right sides of the high-pressure gas cylinder 12, and the front and rear ends of the fasteners 13 are connected through locking bolts 14. The locking bolts 14 can be screwed into the rotating arm 6, so as to fix the high-pressure gas cylinder 12 on the rotating arm 6 through the fasteners 13, realizing the detachable connection of the high-pressure gas cylinder 12. On the one hand, disposable high-pressure gas cylinders 12 can be used in this device, thereby reducing the weight and volume of the entire high-pressure gas cylinder 12. After the capture net 48 is ejected each time, the high-pressure gas cylinder 12 can be replaced, or the high-pressure gas cylinder 12 can be reused. After use, the high-pressure gas cylinder 12 can be directly refilled with gas. And an electromagnetic valve is provided at the gas outlet of the high-pressure gas cylinder 12 to control the release of the gas in the high-pressure gas cylinder 12 through the electromagnetic valve, thereby realizing the node control of the ejection of the capture net 48.

[0037] In a case of this embodiment, a quick-release air nozzle 18 is provided at the upper end of the charging bucket 17, and an air inlet nozzle 7 is provided at the left end of the air duct 9. The air inlet nozzle 7 is inserted into the quick-release air nozzle 18, so that if the charging bucket 17 needs to be replaced, the air duct 9 can be separated from the charging bucket 17. And in order to prevent the air duct 9 from shaking, a mounting seat 10 can be fixedly connected to the lower end of the suspension main shaft 22. The mounting seat 10 is fixedly connected to the middle part of the rotating arm 6. A relief opening 11 is provided in the middle of the mounting seat 10, and the air duct 9 passes through and is connected to the relief opening 11. A plurality of wire rings 23 are evenly distributed above the rotating arm 6, and the air duct 9 passes through and is connected to the wire rings 23. Therefore, the position of the air duct 9 is restricted by the wire rings 23 and the mounting seat 10, so that the air duct 9 will not shake during the rotation of the rotating arm 6, improving the stability.

[0038] During the implementation of this embodiment, the fully charged high-pressure gas cylinder 12 is placed on the rotating arm 6, and the high-pressure gas cylinder 12 is fixed on the rotating arm 6 through the fasteners 13 and the locking bolts 14. The mounting plate 2 is fixed under the unmanned aerial vehicle body 1 through the fixing bolts 3.

[0039] The discharge barrel 17 is assembled and processed, and the catching net 48 is arranged to prevent the catching net 48 and the pulling rope 35 from being entangled and unable to be unfolded normally. The six push plates 33 are closed together to form a disc state. After the splicing is completed, the reset spring 47 is placed inside the fastening sleeve 42. At this time, the fastening sleeve 42 together with the reset spring 47 is sleeved on the outside of the vertical rod 43. At this time, the push plates 33 can be manually separated by a certain gap, and the limit column 46 is inserted into the gap at the end of the push plate 33. The catching net 48 is arranged and placed on the push plate 33. At this time, the push plate 33 is placed into the discharge barrel 17, and the sliding plate 34 and the rotating counterweight head 32 are placed in the spiral slide groove 31. The sliding plate 34 is above the rotating counterweight head 32, and the push plate 33 is pushed into the discharge barrel 17. The push plate 33 moves to the position of the blocking triangular head 40, and the blocking triangular head 40 is pushed away by the push plate 33. The push plate 33 moves to the top of the blocking triangular head 40. At this time, the push plate 33 and the catching net 48 are fixed inside the discharge barrel 17, and the assembly process of the discharge barrel 17 is completed.

[0040] The discharge barrel 17 is installed, and the air inlet nozzle 7 at the left end of the air guide tube 9 is passed through the make way hole 8 from top to bottom, and the air inlet nozzle 7 is inserted into the quick-release air nozzle 18 on the top of the discharge barrel 17. At this time, the limit slide bar 30 is pulled to the right, and the fixed limit block 25 and the movable limit block 27 are separated. The discharge barrel 17 is moved upward, and the fixed limit block 25 is inserted into the annular gap between the discharge barrel 17 and the blocking ring 26. The limit slide bar 30 is released, and the limit spring 28 pushes the movable limit block 27 to the left. The movable limit block 27 is inserted into the annular gap on the right side of the discharge barrel 17 and the blocking ring 26. At this time, the movable limit block 27 and the fixed limit block 25 complete the clamping of the discharge barrel 17.

[0041] The capture net 48 is thrown and flown. The remote controller drives the UAV body 1 to take off. The UAV body 1 moves with the material feeding bucket 17 towards the direction of the suspect. When the UAV body 1 flies within the shooting range, the throwing motor 19 is started. The throwing motor 19 drives the rotating arm 6 to rotate through gear transmission. The rotating arm 6 drives the material feeding bucket 17 to rotate around the suspension main shaft 22. When the rotation speed and angle meet the requirements and the material feeding bucket 17 faces the suspect along the tangent direction of rotation at this position, the air outlet end of the high-pressure gas cylinder 12 is opened. At this time, the gas inside the high-pressure gas cylinder 12 quickly enters the inside of the material feeding bucket 17, and the gas inside the material feeding bucket 17 quickly increases. The high-pressure gas pushes the push plate 33 to move downward. The push plate 33 drives the rotating counterweight 32 to move downward along the spiral chute 31. And while the push plate 33 and the rotating counterweight 32 move downward, the push plate 33 and the rotating counterweight 32 also perform a high-speed self-rotation action. When the push plate 33 and the rotating counterweight 32 are separated from the material feeding bucket 17, the push plate 33, the fastening sleeve 42 and the capture net 48 perform a throwing motion with an initial velocity. During the falling process, the self-rotation speed of the push plate 33 gradually decreases due to air resistance. At this time, the centrifugal force of the push plate 33 decreases. When the centrifugal force of the push plate 33 cannot overcome the elastic force of the return spring 47, the return spring 47 separates the fastening sleeve 42 and the vertical rod 43. At this time, the push plate 33 and the rotating counterweight 32 are unfolded again under the action of centrifugal force, and the capture net 48 is unfolded, so that the capture net 48 can cover the body of the suspect to achieve the capture and handling of the suspect.

[0042] The setting principle of the relevant parameters is that since the entire capture net 48 has a large area after being unfolded, when the rotating arm 6 drives the discharge barrel 17 to rotate, the control of the time node when the high-pressure gas blows out the push plate 33 inside the discharge barrel 17 does not need to be particularly precise. As long as the distance between the final landing point of the capture net 48 and the suspect is not particularly large, the capture net 48 can effectively catch the suspect. And during the operation of the entire drone, the speed at which the discharge barrel 17 is driven by the throwing motor 19 around the suspension main shaft 22 can control the initial velocity of the capture net 48 during horizontal throwing motion, and in conjunction with the height of the drone, the horizontal distance of the entire capture net 48 thrown can be controlled. In addition, the ejection time of the gas from the high-pressure gas cylinder 12 can control the flying angle of the capture net 48 to achieve the effect of direction control. It is even possible to control the rotation speed of the push plate 33 when moving along the spiral chute 31 by changing the gas pressure of the high-pressure gas cylinder 12. That is, it controls how long the large centrifugal force of the push plate 33 lasts after it separates from the discharge barrel 17. When the rotation speed of the push plate 33 inside the discharge barrel 17 is greater, the high-speed rotation time of the push plate 33 after it separates from the discharge barrel 17 will be longer, the longer the fastening sleeve 42 is combined with the vertical rod 43, and the longer the delay in the deployment of the capture net 48 will be. In combination with the initial velocity of the horizontal motion of the capture net 48, the moving distance of the capture net 48 can be increased. In other words, the range of the capture net 48 without extension can be controlled by the size of the air pressure.

[0043] The present invention is applicable to a police capture drone, which drives the discharge barrel 17 to rotate by setting a rotating arm 6, so that the capture net 48 can be thrown horizontally when it is separated from the discharge barrel 17, so that the range of releasing the capture net 48 by the drone is larger, and the landing point can be controlled. At the same time, a fastening sleeve 42 and a vertical rod 43 are provided to cooperate to realize the delayed deployment of the capture net 48, so that the landing point range of the capture net 48 is larger, and the landing point position of the capture net 48 is more controllable, so that the control of the capture drone is more precise and adaptable to different capture scenes.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A police capture drone, comprising a drone body, on which a mounting plate is arranged, characterized in that: It also includes a throwing mechanism and a net-releasing mechanism; The throwing mechanism comprises a suspension spindle rotatably connected to the mounting plate, the end of the suspension spindle is fixedly connected to the rotating arm, a discharge barrel is arranged on the side of the rotating arm away from the suspension spindle, and a high-pressure gas generating assembly for adjusting the internal air pressure of the discharge barrel is arranged on the suspension spindle; The net-releasing mechanism comprises a spiral chute arranged on the inner wall of the discharge barrel, a rotating counterweight head is placed inside the spiral chute, a push plate is arranged in the middle of the discharge barrel, a sliding plate sliding along the spiral chute is arranged on the outer side of the push plate, the discharge barrel is a hollow structure with an open bottom, a catching net is placed in the cavity formed by the discharge barrel and the push plate, a pulling rope is arranged on the outer edge of the catching net, the free end of the pulling rope is connected to the rotating counterweight head, and a blocking component is arranged on the side wall of the discharge barrel to limit the push plate from falling from the inside of the discharge barrel by its own weight; When the high-pressure gas generating assembly increases the internal air pressure of the discharge barrel, the high-pressure gas pushes the push plate to move away from the center of the discharge barrel. The sliding plate and the rotating counterweight head move along the spiral groove while the push plate and the rotating counterweight head rotate relative to the center of the discharge barrel.

2. A police capture drone according to claim 1, characterized in that: The inner wall of the discharge barrel is provided with multiple spiral grooves, the number of which is greater than or equal to three, the push plate is a fan-shaped structure, the number of the push plates is the same as the spiral grooves, and the push plates are brought together to form a disc structure. A vertical rod is provided at a position of the push plate near the center of the disc, and a fastening sleeve is provided on the outer sleeve of the vertical rod.

3. A police capture drone according to claim 2, characterized in that: A limiting protrusion is provided on the side of the vertical rod away from the center of the discharge barrel, and a guiding inclined groove cooperating with the limiting protrusion is provided on the inner wall of the fastening sleeve. When the vertical rod moves along the guiding inclined groove toward a direction away from the fastening sleeve, the vertical rods move closer to each other, and a return spring is provided inside the fastening sleeve to drive the vertical rod to move toward a direction away from the fastening sleeve. A limiting column is provided in the gap on the side of the push plate close to the center of the discharge barrel. When the push plate is pressed against the limiting column, the outer diameter of the limiting protrusion is larger than the minimum inner diameter of the guiding inclined groove.

4. A police capture drone according to claim 2, characterized in that: A through hole is arranged on the outer side of the push plate, and the pulling rope passes through the connecting through hole.

5. The police capture drone according to claim 1, characterized in that: The blocking assembly includes a blocking slide rod slidably connected to the side wall of the discharge barrel, a blocking triangle head cooperating with the push plate is arranged at one end of the blocking slide rod close to the center of the discharge barrel, a limiting plate is arranged at one end of the blocking slide rod away from the center of the discharge barrel, and a blocking spring is arranged between the limiting plate and the discharge barrel to drive the blocking slide rod to move toward the center of the discharge barrel.

6. The police capture drone according to claim 1, characterized in that: The end of the rotating arm is detachably connected to the discharge barrel, and a clamping assembly for fixing the discharge barrel is arranged on the rotating arm.

7. A police capture drone according to claim 6, characterized in that: The clamping assembly includes a blocking ring arranged at the end of the discharge barrel, an annular gap is left between the blocking ring and the discharge barrel, a first suspension block is fixedly connected to the end of the rotating arm away from the main shaft, a fixed limit block matching the annular gap is arranged on the first suspension block, a second suspension block is arranged on the side of the rotating arm close to the main shaft, a blocking slide rod is slidably connected to the second suspension block, a movable limit block matching the annular gap is arranged on the end of the blocking slide rod close to the discharge barrel, and a limit spring is arranged between the movable limit block and the second suspension block for driving the movable limit block to move toward the discharge barrel.

8. The police capture drone according to claim 1, characterized in that: The mounting plate is detachably connected to the drone body through fixing bolts, and a throwing motor is arranged on the mounting plate. The output shaft of the throwing motor is fixedly connected to a driving helical gear, and the driving helical gear is meshedly connected to a driven helical gear fixedly connected to the suspension main shaft.

9. The police capture drone according to claim 1, characterized in that: The high-pressure gas generating assembly comprises a high-pressure gas cylinder arranged on a rotating arm, and a gas outlet end of the high-pressure gas cylinder is connected to the interior of a discharge barrel through an air guide pipe.

10. A police capture drone according to claim 9, characterized in that: The high-pressure gas cylinder is arranged at one end of the rotating arm away from the discharge barrel. The rotating arm is provided with a fastener for fixing the high-pressure gas cylinder. Locking bolts cooperating with the rotating arm are provided on both sides of the fastener. The gas outlet end of the high-pressure gas cylinder is connected to the air guide pipe. The free end of the air guide pipe is provided with an air inlet nozzle. The discharge barrel is provided with a quick-release gas nozzle cooperating with the air inlet nozzle.

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