Police arresting drone

Abstract

The application relates to the technical field of unmanned planes, and discloses a police catching type unmanned plane, which comprises a plane body, a mounting plate arranged on the plane body, a throwing mechanism and a net releasing mechanism; 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 the side, away from the suspension main shaft, of the rotating arm is provided with a discharging barrel; the net releasing mechanism comprises a spiral chute arranged on the inner wall of the discharging barrel, a rotating counterweight head is arranged in the spiral chute, the middle part of the discharging barrel is provided with a push plate, the outer side of the push plate is provided with a sliding plate which slides along the spiral chute, the discharging barrel is a hollow structure with an open bottom, and a catching net is arranged in the cavity formed by the discharging barrel and the push plate. The rotating arm is arranged to drive the discharging barrel to rotate, so that the catching net can perform a flat throwing motion when the catching net is separated from the discharging barrel, and the range of the unmanned plane for releasing the catching net is larger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned aerial vehicles, in particular to a police catching type unmanned aerial vehicle. BACKGROUND

[0002] The police catching type unmanned aerial vehicle is a kind of unmanned aerial vehicle specially designed for police law enforcement and security tasks, mainly used for catching or controlling specific targets, including catching net type unmanned aerial vehicles and mechanical arm type unmanned aerial vehicles, etc. The catching net type unmanned aerial vehicle is equipped with a catching net device, which can pop out the catching net to entrap the target when the unmanned aerial vehicle approaches the target through remote control or automatic control. This kind of unmanned aerial vehicle is suitable for catching flexible targets, such as suspects on the run.

[0003] However, some existing catching net type unmanned aerial vehicles need to fly over the suspect when working, and the catching net is deployed freely to cover the suspect, so the suspect needs enough space above to allow the unmanned aerial vehicle to stay, and the unmanned aerial vehicle needs to fly exactly above the suspect, which has many limitations, so it needs to be improved. SUMMARY

[0004] The present application provides a police catching type unmanned aerial vehicle, which solves the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A police catching type unmanned aerial vehicle, comprising an unmanned aerial vehicle body, an installation plate provided on the unmanned aerial vehicle body, a throwing mechanism and a net throwing mechanism; the throwing mechanism comprises a suspension main shaft rotatably connected with the installation plate, the end of the suspension main shaft is fixedly connected with a rotating arm, the side of the rotating arm away from the suspension main shaft is provided with a discharge bucket, a high-pressure gas generating assembly for adjusting the internal gas pressure of the discharge bucket is arranged on the suspension main shaft; the net throwing mechanism comprises a spiral chute arranged on the inner wall of the discharge bucket, a rotating counterweight is placed in the spiral chute, a push plate is arranged in the middle of the discharge bucket, a sliding plate sliding along the spiral chute is arranged on the outer side of the push plate, the discharge bucket is a hollow structure with an open bottom, a catching net is placed in the cavity formed by the discharge bucket 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 with the rotating counterweight, a blocking assembly is arranged on the side wall of the discharge bucket to limit the push plate from falling out of the discharge bucket by gravity; when the high-pressure gas generating assembly increases the internal gas pressure of the discharge bucket, the high-pressure gas pushes the push plate to move away from the center of the discharge bucket, the sliding plate and the rotating counterweight move along the spiral chute at the same time, and the push plate and the rotating counterweight rotate relative to the center of the discharge bucket.

[0007] As a preferred technical scheme of the present application, the inner wall of the feeding barrel is provided with a plurality of spiral chutes, the number of the spiral chutes is greater than or equal to three, the push plate is in a fan-shaped structure, the number of the push plate is the same as that of the spiral chutes, the push plate is closed to form a disc structure, the push plate is provided with a vertical rod at a position close to the center of the disc, and the outer part of the vertical rod is provided with a fastening sleeve. The side of the vertical rod away from the center of the feeding barrel is provided with a limiting protrusion, the inner wall of the fastening sleeve is provided with a guide inclined groove matched with the limiting protrusion, the vertical rods move towards each other when moving along the guide inclined groove away from the fastening sleeve, the inside of the fastening sleeve is provided with a return spring for driving the vertical rods to move away from the fastening sleeve, the gap on the side of the push plate close to the center of the feeding barrel is provided with a limiting column, and the outer diameter of the limiting protrusion is greater than the minimum inner diameter of the guide inclined groove when the push plate is in contact with the limiting column.

[0008] As a preferred technical scheme of the present application, the blocking assembly comprises a blocking slide rod slidingly connected to the side wall of the feeding barrel, the end of the blocking slide rod close to the center of the feeding barrel is provided with a blocking triangular head matched with the push plate, and the end of the blocking slide rod away from the center of the feeding barrel is provided with a limiting plate, and the limiting plate and the feeding barrel are provided with a blocking spring for driving the blocking slide rod to move towards the center of the feeding barrel.

[0009] As a preferred technical scheme of the present application, the end of the rotating arm is detachably connected to the feeding barrel, and the rotating arm is provided with a clamping assembly for fixing the feeding barrel. The clamping assembly comprises a blocking ring provided at the end of the feeding barrel, and an annular gap is left between the blocking ring and the feeding barrel. The end of the rotating arm away from the main shaft is fixedly connected with a first suspension block, and the first suspension block is provided with a fixed limiting block matched with the annular gap. The side of the rotating arm close to the main shaft is provided with a second suspension block, and the second suspension block is slidingly connected with a blocking slide rod. The end of the blocking slide rod close to the feeding barrel is provided with a movable limiting block matched with the annular gap, and the movable limiting block and the second suspension block are provided with a limiting spring for driving the movable limiting block to move towards the feeding barrel.

[0010] As a preferred technical scheme of the present application, the mounting plate is detachably connected to the unmanned aerial vehicle body through a fixing bolt, and the mounting plate is provided with a throwing motor. The output shaft of the throwing motor is fixedly connected with a driving bevel gear, and the driving bevel gear is meshingly connected with a driven bevel gear fixedly connected with the suspension main shaft.

[0011] As a preferred technical scheme of the present application, the high-pressure gas generating assembly comprises a high-pressure gas cylinder arranged on the rotating arm, and the gas outlet end of the high-pressure gas cylinder is connected to the inside of the discharging barrel through a gas guide pipe.

[0012] The present application has the following advantages:

[0013] By arranging the rotating arm to drive the discharging barrel to rotate, the capture net can perform a flat throwing motion when it is separated from the discharging barrel, so that the range of the capture net released by the unmanned aerial vehicle is larger, and the landing point can be controlled. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a structural schematic view 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 structural schematic view of a throwing mechanism in a police capture type unmanned aerial vehicle.

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

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

[0020] Figure 6 It is a structural schematic view of the inside of a discharging barrel in a police capture type unmanned aerial vehicle.

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

[0022] Figure 8 It is a schematic view of the structure of the fastening sleeve and the vertical rod cooperation in the police catching type unmanned aerial vehicle.

[0023] Figure 9 It is Figure 8 The partial enlarged view of the middle A.

[0024] Figure 10 It is a schematic view of the structure of the push plate after folding in the police catching type unmanned aerial vehicle.

[0025] Figure 11 It is Figure 10 The partial enlarged view of the middle B.

[0026] Figure 12 It is a schematic view of the structure of the catching net after unfolding in the police catching type unmanned aerial vehicle.

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

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] In one embodiment, please refer to Figures 1-12The utility model provides a kind of police capture type unmanned aerial vehicle, including unmanned aerial vehicle body 1, installation plate 2 is provided on unmanned aerial vehicle body 1, installation plate 2 is arranged in the just below unmanned aerial vehicle body 1, fixed bolt 3 is arranged at the corner of installation plate 2, and fixed bolt 3 is fixed in the just below unmanned aerial vehicle body 1 by screw thread connection, further including throwing mechanism 4 and netting mechanism 5;

[0030] Throwing mechanism 4, including the suspension main shaft 22 rotationally connected in the middle part of the lower surface of installation plate 2, the lower side of suspension main shaft 22 is connected with the middle part of rotating arm 6, the left lower side of rotating arm 6 is provided with discharge barrel 17, and discharge barrel 17 is the U-shaped rotary body structure, and the lower side of discharge barrel 17 is in open state, high-pressure gas generating assembly 15 is provided on rotating arm 6, high-pressure gas generating assembly 15 can make the air pressure in discharge barrel 17 rapidly increase, so that capture net 48 is blown out, and the effect of netting is realized;

[0031] Netting mechanism 5, including spiral chute 31 provided on the inner wall of discharge barrel 17, the lower end of spiral chute 31 is in open state, rotating counterweight head 32 is placed in the inside of spiral chute 31, and push plate 33 is arranged in the inside of discharge barrel 17, push plate 33 is located above rotating counterweight head 32, and sliding plate 34 is arranged on the outside of push plate 33, sliding plate 34 can move along spiral chute 31, when the air pressure in discharge barrel 17 increases, airflow can push push plate 33 to move downwards, the sliding plate 34 on the outside of push plate 33 moves downwards along spiral chute 31, so that rotating counterweight head 32 moves downwards, and a cavity is formed between push plate 33 and the inside of discharge barrel 17, capture net 48 can be placed in the cavity, that is, capture net 48 is placed above push plate 33, capture net 48 is in the form of semisphere with middle part bulging after unfolding, the upper end of pull rope 35 is connected with the outer edge of capture net 48, the lower end of pull rope 35 is connected with rotating counterweight head 32, and blocking assembly 36 is arranged on the side wall of discharge barrel 17, blocking assembly 36 can limit push plate 33 to move downwards, when the air pressure in discharge barrel 17 and the atmospheric pressure outside are the same, the total gravity of push plate 33 and capture net 48 cannot push blocking assembly 36 away at this time, at this time, blocking assembly 36 limits push plate 33 in the inside of discharge barrel 17, but when high-pressure gas generating assembly 15 increases the air pressure in the cavity above push plate 33, high-pressure gas pushes push plate 33 to move downwards, at this time, push plate 33 can push blocking assembly 36 away, so that push plate 33 pushes rotating counterweight head 32 to move downwards through sliding plate 34, while rotating counterweight head 32 and push plate 33 move downwards along spiral chute 31, rotating counterweight head 32 and push plate 33 also rotate, push plate 33 and rotating counterweight head 32 are subjected to centrifugal force outward, so when rotating counterweight head 32 is separated from spiral chute 31, rotating counterweight head 32 is thrown outward, rotating counterweight head 32 drives capture net 48 to unfold, so that the effect of netting is realized.

[0032] In one case of the embodiment, a plurality of spiral chutes 31 are arranged on the inner wall of the discharge bucket 17, the number of the spiral chutes 31 needs to be greater than or equal to three, six spiral chutes 31 are arranged in the application, and the six spiral chutes 31 are uniformly distributed relative to the center of the discharge bucket 17, the number of the push plates 33 is the same as that of the spiral chutes 31, so six push plates 33 are also arranged, the six push plates 33 just form a disc structure with gaps between each other, and a vertical rod 43 is vertically arranged at the top corner of the push plate 33, the six vertical rods 43 just form a cylinder with gaps, and a fastening sleeve 42 is sleeved above the cylinder, after the fastening sleeve 42 sleeves the six vertical rods 43 at the same time, the six push plates 33 are folded into a disc structure.The limiting protrusions 44 are arranged outside the vertical rod 43, and the inner wall of the fastening sleeve 42 is provided with a guide inclined groove 45, the upper surface of the guide inclined groove 45 is a downward inclined surface, after the fastening sleeve 42 is sleeved outside the vertical rod 43, the limiting protrusions 44 fall on the guide inclined groove 45, and since there is a gap between the push plates 33, when the limiting protrusions 44 move downward along the guide inclined groove 45, the gap between the push plates 33 will gradually decrease, when the push plates 33 have a gap, the center of the disc structure composed of the six push plates 33 is inserted into the limiting column 46, the limiting column 46 is made of a wood rod which can slightly deform, after the limiting column 46 is inserted into the central gap, the wood rod will be clamped, the push plates 33 cannot approach each other, at this time, the outer diameter of the circular structure composed of the limiting protrusions 44 is greater 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, the reset spring 47 is arranged in the inside of the fastening sleeve 42, the reset spring 47 will push the vertical rod 43 downward, so that the limiting protrusions 44 move along the guide inclined groove 45, the push plates 33 are closed, at this time, the limiting column 46 cannot be separated from the push plates 33, but when the push plates 33 rotate at high speed along the inside of the discharging barrel 17, the push plates 33 are separated from each other under the action of the centrifugal force, at this time, the limiting protrusions 44 are tightly arranged on the inner wall of the fastening sleeve 42, at this time, the gap of the push plates 33 increases, so that the limiting column and the push plates 33 are separated and fall off, that is, only when the entire device releases the trapping net 48, the limiting column 46 will fall off, the limiting column 46 plays an insurance effect, after the limiting column 46 falls off, the rotating speed of the push plates 33 gradually decreases due to the wind resistance in the self-rotation process of the push plates 33, at this time, the centrifugal force acting on the push plates 33 gradually decreases, the elastic force of the reset spring 47 is greater than the upward separation of the centrifugal force on the guide inclined groove 45, at this time, the reset spring 47 will push the vertical rod 43 to move downward relative to the fastening sleeve 42, the push plates 33 approach each other, when the vertical rod 43 is completely separated from the fastening sleeve 42, the push plates 33 will be separated outward again due to the centrifugal force, realizing the separation effect, through this delayed expansion way, after the trapping net 48 is released from the inside of the discharging barrel 17, the trapping net 48 will not be expanded at the first time along with the rotating counterweight head 32, it needs to wait until the rotating speed decreases a little, after the vertical rod 43 is separated from the fastening sleeve 42, the trapping net 48 can be expanded, since the quality of the trapping net 48 itself is small, and the trapping net 48 falls from the air, the trapping net 48 has enough time to expand, therefore, even if the rotating speed slows down, the centrifugal force generated by the rotating counterweight head 32 when rotating can still expand the trapping net 48, through the cooperation of the vertical rod 43 and the fastening sleeve 42, the delayed expansion effect is realized, so that the trapping net 48 can maintain a small volume for a period of time during the process of separating from the discharging barrel 17 and being thrown, so that the trapping net 48 can be thrown for a longer distance, facilitating the projection of the trapping net 48.In order to better limit the state of the initial stage of the capture net 48, a through hole 41 is arranged on the outer side of the push plate 33, and the pulling rope 35 needs to pass through the through hole 41, so that when the vertical rod 43 is not separated from the fastening sleeve 42, the capture net 48 will remain above the push plate 33. The fastening sleeve 42 limits the time of the push plate 33 to expand. In some simple working conditions, the push plate 33 can be designed as a single disc structure, at this time the push plate 33 only bears the thrust of the airflow and is used as a piston, and the push plate 33 is not limited by the pulling rope 35. The airflow pushes the rotating counterweight head 32 to move along the spiral chute 31, and after the push plate 33 is separated from the discharge barrel 17, the rotating counterweight head 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, but compared with the delay expansion process by setting the fastening sleeve 42 and the vertical rod 43, the direct expansion moving distance is shorter.

[0033] In one case of the embodiment, the blocking assembly 36 includes a blocking slide rod 39 which is slidingly connected to the side wall of the discharge barrel 17. The blocking slide rod 39 is arranged horizontally and needs to avoid the spiral chute 31 to avoid interfering with the movement of the rotating counterweight head 32. A blocking triangular head 40 which cooperates with the push plate 33 is arranged at one end of the blocking slide rod 39 close to the center of the discharge barrel 17. A limiting plate 37 is arranged at the other end of the blocking slide rod 39 away from the center of the discharge barrel 17, and a blocking spring 38 which drives the blocking slide rod 39 to move towards the center of the discharge barrel 17 is arranged 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, and 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. A gap is left between the push plate 33 and the inner wall of the discharge barrel 17, and when the blocking triangular head 40 is attached to the inner wall of the discharge barrel 17, the push plate 33 can move beyond the blocking triangular head 40. That is, when the push plate 33 is only subjected to the action of gravity, the horizontal component force of the push plate 33 cannot push the blocking spring 38 to compress through the blocking triangular head 40. 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 airflow pushes the push plate 33 to move downward, the horizontal component force of the push plate 33 increases, so that the push plate 33 can push away the blocking triangular head 40 to move downward, thereby realizing that the capture net 48 can only be thrown out and expanded when the high-pressure gas generating assembly 15 is working.

[0034] In one case of the embodiment, the end of the rotating arm 6 is detachably connected with the feeding barrel 17, and the rotating arm 6 is provided with a clamping assembly 16 for fixing the feeding barrel 17. By designing the feeding barrel 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 sizes of the catching net 48 can be replaced by replacing the feeding barrel 17. The clamping assembly 16 comprises a blocking ring 26 arranged on the upper end of the feeding barrel 17, an annular gap is left between the blocking ring 26 and the top surface of the feeding barrel 17, a first hanging block 24 is arranged at the left end of the lower surface of the rotating arm 6, a fixed limiting block 25 is arranged at the lower end of the first hanging block 24, the fixed limiting block 25 can be inserted into the annular gap, a second hanging block 29 is arranged at the left position of the lower surface of the rotating arm 6, a blocking slide rod 39 oriented left and right is slidably connected to the lower end of the second hanging block 29, a movable limiting block 27 is arranged at the left end of the blocking slide rod 39, the movable limiting block 27 can also be inserted into the annular gap, a limiting spring 28 is arranged between the movable limiting block 27 and the second hanging block 29, the limiting spring 28 is sleeved outside the blocking slide rod 39, and the limiting spring 28 pushes the movable limiting block 27 to the left side. Therefore, when the movable limiting block 27 and the fixed limiting block 25 are inserted into the annular gap, the limiting spring 28 pushes the movable limiting block 27 to the left side, and the movable limiting block 27 and the fixed limiting block 25 can clamp the upper part of the feeding barrel 17 left and right, so as to realize the fixing treatment of the feeding barrel 17. When it is necessary to detach the feeding barrel 17, the blocking slide rod 39 is pulled to the right side, at this time the movable limiting block 27 is separated from the annular gap above the feeding barrel 17, and the feeding barrel 17 is moved to the right side, at this time the fixed limiting block 25 is also separated from the annular gap, at this time the feeding barrel 17 is completely separated from the rotating arm 6, and the detachment of the feeding barrel 17 is realized.

[0035] In one case of the embodiment, a throwing motor 19 is arranged at 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 helical gear 20, and the driving helical gear 20 is meshingly connected with a driven helical gear 21 fixedly connected with a suspension main shaft 22. Therefore, the throwing motor 19 can realize the rotation of the rotating arm 6 through gear transmission, and provide centrifugal force to the feeding barrel 17, so as to facilitate the subsequent throwing of the catching net 48.

[0036] In one case of the embodiment, the high-pressure gas generating assembly 15 includes a high-pressure gas cylinder 12 arranged above the 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 gas guide pipe 9, and the left end of the gas guide pipe 9 can be in communication with the inside of the discharge bucket 17, so that high-pressure gas is released into the inside of the discharge bucket 17 through the high-pressure gas cylinder 12, facilitating the subsequent pushing out of the capture net 48. The high-pressure gas cylinder 12 is sleeved with fasteners 13 on the left and right sides. The front and rear ends of the fasteners 13 are penetrated and connected with locking bolts 14, which can be screwed into the rotating arm 6, so that the high-pressure gas cylinder 12 is fixed on the rotating arm 6 through the fasteners 13, realizing the detachable connection of the high-pressure gas cylinder 12. On the one hand, the device can use disposable high-pressure gas cylinders 12, thereby reducing the weight and volume of the entire high-pressure gas cylinder 12. After completing the throwing of the capture net 48 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 is directly treated by refilling. The gas outlet of the high-pressure gas cylinder 12 is provided with a solenoid valve for controlling the release of gas from the high-pressure gas cylinder 12, thereby realizing the node control of the throwing of the capture net 48.

[0037] In one case of the embodiment, a quick-release gas nozzle 18 is arranged at the upper end of the discharge bucket 17, and a gas inlet nozzle 7 is arranged at the left end of the gas guide pipe 9. The gas inlet nozzle 7 is inserted into the quick-release gas nozzle 18, so that if the discharge bucket 17 needs to be replaced, the gas guide pipe 9 can be disconnected from the discharge bucket 17. In order to avoid the shaking of the gas guide pipe 9, a mounting seat 10 is 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 clearance 11 is arranged in the middle part of the mounting seat 10. The gas guide pipe 9 is penetrated and connected with the clearance 11. A plurality of wire loops 23 are uniformly distributed above the rotating arm 6. The gas guide pipe 9 is penetrated and connected with the wire loops 23. Therefore, the position of the gas guide pipe 9 is limited by the wire loops 23 and the mounting seat 10, so that the rotating arm 6 does not shake during rotation, thereby improving stability.

[0038] In the implementation process of the embodiment, the high-pressure gas cylinder 12 filled with gas is placed on the rotating arm 6. 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 below the unmanned aerial vehicle body 1 through the fixing bolts 3.

[0039] The discharge bucket 17 assembly process, arrange the capture net 48, avoid the capture net 48 and the pull rope 35 entangled together and cannot normally unfold, six push plates 33 are folded together to form a disc state, after splicing, the reset spring 47 is put into the inside of the fastening sleeve 42, at this time the fastening sleeve 42 is together with the reset spring 47 and is sleeved on the outside of the vertical rod 43, at this time the push plate 33 can be manually separated by a certain gap, the limiting column 46 is inserted into the gap at the end of the push plate 33, the capture net 48 is arranged above the push plate 33, at this time the push plate 33 is put into the inside of the discharge bucket 17, and the sliding plate 34 and the rotating counterweight head 32 are put into the spiral chute 31, the sliding plate 34 is above the rotating counterweight head 32, the push plate 33 is pushed into the inside of the discharge bucket 17, the push plate 33 moves to the position of the blocking triangular head 40, the blocking triangular head 40 is pushed away by the push plate 33, the push plate 33 moves above the blocking triangular head 40, at this time the push plate 33 and the capture net 48 are fixed in the inside of the discharge bucket 17, and the assembly process of the discharge bucket 17 is completed.

[0040] The discharge bucket 17 installation process, the air inlet nozzle 7 at the left end of the air guide pipe 9 is inserted into the quick release air nozzle 18 at the top of the discharge bucket 17 from top to bottom through the accommodation hole 8, at this time the limiting slide rod 30 is pulled to the right side, the fixed limiting block 25 and the movable limiting block 27 are separated, the discharge bucket 17 is moved to the upper side, the fixed limiting block 25 is inserted into the annular gap between the discharge bucket 17 and the blocking ring 26, the limiting slide rod 30 is loosened, the limiting spring 28 pushes the movable limiting block 27 to the left side, the movable limiting block 27 is inserted into the annular gap between the discharge bucket 17 and the right side of the blocking ring 26, at this time the movable limiting block 27 and the fixed limiting block 25 complete the clamping process of the discharge bucket 17.

[0041] The throwing net 48 is thrown, the unmanned aerial vehicle body 1 is started by the remote controller, the unmanned aerial vehicle body 1 moves towards the direction of the suspect with the release barrel 17, when the unmanned aerial vehicle body 1 flies to the range, the throwing motor 19 is started, the throwing motor 19 drives the rotating arm 6 to rotate through the gear transmission, the rotating arm 6 drives the release barrel 17 to rotate around the suspension main shaft 22, when the rotating speed and angle meet the requirements, the release barrel 17 is opened in the tangential direction of the rotation towards the suspect, the gas in the high-pressure gas cylinder 12 enters the inside of the release barrel 17 quickly, the gas in the release barrel 17 increases quickly, the high-pressure gas drives the push plate 33 to move downwards, the push plate 33 drives the rotating counterweight head 32 to move downwards along the spiral sliding groove 31, and the push plate 33 and the rotating counterweight head 32 move downwards, at the same time, the push plate 33 and the rotating counterweight head 32 also perform high-speed rotation, when the push plate 33 and the rotating counterweight head 32 are separated from the release barrel 17, the push plate 33, the fastening sleeve 42 and the throwing net 48 perform the throwing movement with the initial speed, in the process of descending, the 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 reset spring 47, the reset spring 47 separates the fastening sleeve 42 and the vertical rod 43, at this time, the push plate 33 and the rotating counterweight head 32 are expanded again under the action of the centrifugal force, the throwing net 48 is expanded, so that the throwing net 48 can cover the suspect's body, and the suspect is captured.

[0042] The setting principle of the related parameters, since the area of the whole catching net 48 after being unfolded is large, the control of the time node of the high-pressure gas blowing out the push plate 33 in the discharging barrel 17 by the rotating arm 6 when driving the discharging barrel 17 to rotate is not particularly accurate, as long as the final landing point of the catching net 48 is not particularly far from the suspect, the catching net 48 can effectively net the suspect. And in the whole process of the working of the unmanned aerial vehicle, the rotating speed of the discharging barrel 17 driven by the throwing motor 19 around the suspension main shaft 22 can control the initial speed of the catching net 48 in the horizontal throwing motion, cooperate with the height of the unmanned aerial vehicle, so as to control the horizontal distance of the throwing of the whole catching net 48, and through the gas spraying time of the high-pressure gas cylinder 12, the angle of the throwing of the catching net 48 can be controlled, the effect of direction control is realized, and even the rotating speed of the push plate 33 when moving along the spiral chute 31 can be controlled by changing the gas pressure of the high-pressure gas cylinder 12, that is, the length of the large centrifugal force of the push plate 33 after separating from the discharging barrel 17 is controlled, the greater the self-rotating speed of the push plate 33 in the discharging barrel 17 is, the longer the high-speed rotation of the push plate 33 after separating from the discharging barrel 17 lasts, the longer the time of the combination of the fastening sleeve 42 and the vertical rod 43, and the longer the time of the delayed unfolding of the catching net 48, cooperate with the initial speed of the horizontal throwing motion of the catching net 48, so as to improve the moving distance of the catching net 48, that is, the range of the catching net 48 of the catching type unmanned aerial vehicle can be controlled by the size of the gas pressure.

[0043] The application is suitable for a police catching type unmanned aerial vehicle, the rotating arm 6 drives the discharging barrel 17 to rotate, so that the catching net 48 can perform horizontal throwing motion when separating from the discharging barrel 17, so that the range of the unmanned aerial vehicle releasing the catching net 48 is larger, and the landing point control can be performed, meanwhile, the cooperation of the fastening sleeve 42 and the vertical rod 43 realizes the delayed unfolding of the catching net 48, so that the landing point range of the catching net 48 is larger, and the landing position of the catching net 48 is more controllable, so that the control of the catching type unmanned aerial vehicle is more accurate, and is suitable for different catching scenes.

[0044] It is apparent for those skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but rather that the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered as exemplary and not limiting in any way. The scope of the application is defined by the appended claims rather than by the above description, and therefore all changes coming within the meaning and range of equivalents of the claims are intended to be embraced therein.

Claims

1. A police capture drone, comprising a drone body, a mounting plate provided on the drone body, characterized in that: It also includes a throwing mechanism and a net-releasing mechanism; The throwing mechanism includes 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 provided on the side of the rotating arm away from the suspension spindle, and a high-pressure gas generating assembly for regulating the internal air pressure of the discharge barrel is provided 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 provided in the middle of the discharge barrel, and a sliding plate sliding along the spiral chute is provided 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 provided on the outer edge of the catching net, and the free end of the pulling rope is connected to the rotating counterweight head, and a blocking component is provided on the side wall of the discharge barrel for limiting the push plate from falling from the inside of the discharge barrel by its own weight. The inner wall of the discharge barrel is provided with a plurality of spiral chutes, and the number of spiral chutes is greater than or equal to three. The push plate is a fan-shaped structure, and the number of the push plate and the spiral chute is the same. When the plates are brought together, a disc structure is formed. A vertical rod is provided at a position of the push plate near the center of the disc. A fastening sleeve is provided on the outer sleeve of the vertical rod. A limiting protrusion is provided on the side of the vertical rod away from the center of the discharge barrel. The inner wall of the fastening sleeve is provided with a guide inclined groove that cooperates with the limiting protrusion. When the vertical rod moves along the guide inclined groove in a direction away from the fastening sleeve, the vertical rods move closer to each other. A return spring is provided inside the fastening sleeve to drive the vertical rod to move in a direction away from the fastening sleeve. A limiting column is provided at the gap on the side of the push plate near the center of the discharge barrel. When the push plate is pressed tightly against the limiting column, the outer diameter of the limiting protrusion is larger than the minimum inner diameter of the guide inclined groove. A through hole is provided on the outer side of the push plate, and the pulling rope passes through the connecting through hole. 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 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 provided at the end of the blocking slide rod close to the center of the discharge barrel, a limiting plate is provided at the end of the blocking slide rod away from the center of the discharge barrel, and a blocking spring is provided between the limiting plate and the discharge barrel to drive the blocking slide rod to move toward the center of the discharge barrel.

3. A 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 provided on the rotating arm.

4. A police capture drone according to claim 3, 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 that cooperates with the annular gap is provided on the first suspension block, a second suspension block is provided 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 that cooperates with the annular gap is provided on the end of the blocking slide rod close to the discharge barrel, and a limit spring that drives the movable limit block to move toward the discharge barrel is provided between the movable limit block and the second suspension block.

5. The police capture drone according to claim 1, characterized in that: The mounting plate is detachably connected to the drone body via fixing bolts. A throwing motor is provided on the mounting plate. The output shaft of the throwing motor is fixedly connected to a driving helical gear, which is meshed with a driven helical gear fixedly connected to the suspension main shaft.

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

7. A police capture drone according to claim 6, 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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