A drone

Abstract

This application relates to the field of unmanned aerial vehicles, and particularly to an unmanned aerial vehicle, which includes a fuselage and an anti-collision component disposed on the fuselage. The anti-collision component includes an airbag box, an airbag, a guide rod, and an inflating member. The airbag box is fixedly connected to the bottom of the fuselage. The inflating member and the airbag are both disposed in the airbag box. An exhaust valve is provided on the airbag. A guide ring is provided on the airbag. The guide rod is fixedly connected to the fuselage and is disposed along the circumferential direction of the fuselage. The guide ring is sleeved on the guide rod. A folding mechanism is provided on the airbag. The folding mechanism includes a plurality of scissor units arranged in parallel along the length direction of the airbag. Adjacent two scissor units are ball-jointed to each other. The scissor units are connected to the airbag through connecting ropes. A airbag recovery mechanism for recovering the airbag is provided in the airbag box. This application has the effect of reducing the possibility of the airbag being stuck in the airbag box.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicles, and particularly to an unmanned aerial vehicle. Background Art

[0002] An unmanned aerial vehicle is an unpiloted aircraft controlled by a radio remote control device and a self - contained program control device. It can be competent for aerial reconnaissance, surveillance, communication, anti - submarine, electronic jamming and other tasks, and is widely used in various fields such as military, agriculture, geology, scientific research, power line inspection, aerial photography, etc., and plays an important role.

[0003] A relatively common recovery method for small unmanned aerial vehicles is parachute recovery. Under the action of the recovery parachute, the stable landing speed of the aircraft is reduced, and then a cushioning device of the airbag is used to slow down the impact energy brought by landing, reduce the landing overload and avoid damage.

[0004] Usually when recovering an unmanned aerial vehicle, if the safety airbag is damaged, such as being cut by a hard stone on the ground, the used safety airbag will be disassembled from the unmanned aerial vehicle and a new one will be installed. If the airbag is not damaged, in the prior art, an airbag recovery device is used to recover the airbag. The airbag recovery device includes a winding wheel and a driving motor. One end of several connecting ropes is connected to the outer wall of the airbag, and the other end is connected to the winding wheel. The winding wheel is rotatably installed in an installation cavity, the driving motor is installed in the installation cavity, and its driving shaft is in transmission connection with the winding wheel to drive the winding wheel to rotate. There are multiple connecting ropes, and one end of each of them is wound around the winding wheel respectively, and the other end is fixedly connected to the outer wall of the airbag; the driving motor is electrically connected to the controller.

[0005] After the safety airbag is recovered into the airbag box, if the winding wheel continues to rotate, one end of the airbag close to the winding wheel will be stuck by the winding wheel, but the connecting rope will continue to drive the safety airbag to move away from the gas source end, thus folding the safety airbag, which may cause some gas in the safety airbag not to be discharged, and thus the safety airbag cannot be completely received. And when the unmanned aerial vehicle encounters another impact, because the safety airbag is folded, the airbag expands and gets stuck in the airbag box, so that the airbag cannot pop out in time to protect the unmanned aerial vehicle. Summary of the Invention

[0006] In order to solve the above - mentioned technical problems, this application provides an unmanned aerial vehicle.

[0007] An unmanned aerial vehicle provided by this application adopts the following technical solutions:

[0008] An unmanned aerial vehicle, comprising a fuselage and an anti-collision assembly arranged on the fuselage. The anti-collision assembly includes an airbag box, an airbag, a guide rod, and an inflating member. The airbag box is fixedly connected to the bottom of the fuselage. The inflating member and the airbag are both arranged in the airbag box. An exhaust valve is arranged on the airbag. A guide ring is arranged on the airbag. The guide rod is fixedly connected to the fuselage and arranged along the circumferential direction of the fuselage. The guide ring is sleeved on the guide rod. A folding mechanism is arranged on the airbag. The folding mechanism includes a plurality of scissor units arranged in parallel along the length direction of the airbag. Adjacent two scissor units are ball-jointed to each other. The scissor units are connected to the airbag through connecting ropes. A airbag recovery mechanism for recovering the airbag is arranged in the airbag box.

[0009] By adopting the above technical solution, when the fuselage falls, the inflating member inflates the airbag. The airbag inflates and expands. The guide ring slides along the guide rod, so that the airbag extends along the guide rod to wrap the fuselage. The scissor units unfold as the airbag expands. Since the unmanned aerial vehicle is usually square-shaped, when the scissor units pass through the bending part of the unmanned aerial vehicle, rotation needs to occur between adjacent two scissor units. Therefore, the two scissor units are ball-jointed, which is convenient for the airbag to wrap the fuselage. The anti-collision assembly of the unmanned aerial vehicle can improve the safety and reliability of the unmanned aerial vehicle, reduce the damage rate of the unmanned aerial vehicle, and prolong the service life of the unmanned aerial vehicle, having high practicability and economic value.

[0010] When recovering the unmanned aerial vehicle, the exhaust valve on the airbag is opened, and the airbag recovery mechanism is started to recover the airbag. The guide ring slides reversely along the guide rod, and the scissor units fold up as the airbag is recovered. Due to the arrangement of the guide rod, when the airbag is recovered, the airbag moves along the guide rod, and the extended end of the airbag finally enters the airbag box, thus avoiding the folding of the extended end of the airbag. Through the arrangement of the scissor units, when the airbag is recovered, the airbag is folded in a W shape, which is convenient for the airbag to inflate and expand again, reducing the possibility of the airbag getting stuck in the airbag box.

[0011] Optionally, the airbag recovery mechanism includes a recovery roller and a recovery rope. The recovery roller is rotatably connected in the airbag box. One end of the recovery rope is fixedly connected to the recovery roller, and the other end of the recovery rope is fixedly connected to the end of the airbag extending out of the airbag box. When the airbag is received in the airbag box, a part of the recovery rope disengages from the recovery roller.

[0012] By adopting the above technical solution, before the release of the capsule body, a part of the recovery rope disengages from the recovery roller. When the capsule body inflates and expands to wrap the body, the recovery rope moves together with the capsule body. Since the capsule body needs to pop out quickly to protect the body, in the initial state, a part of the recovery rope disengages from the recovery roller. When the capsule body drives the recovery rope to move, there is no need to apply force to the recovery rope again to pull the recovery roller to rotate and make the recovery rope disengage from the recovery roller, thereby accelerating the ejection of the capsule body and improving the effect of protecting the body.

[0013] When recovering the capsule body, open the exhaust valve and drive the recovery roller to rotate. The recovery roller rotates to wind the recovery rope around the recovery roller, thereby retracting the extended end of the capsule body and making the capsule body retract into the airbag box along the guide rod. After the capsule body is recovered, drive the recovery roller to reverse, so that part of the recovery rope disengages from the recovery roller, facilitating the quick ejection of the capsule body.

[0014] Optionally, a partition chamber is provided in the airbag box, and the capsule body recovery mechanism is arranged in the partition chamber.

[0015] By adopting the above technical solution, since other structures are also provided in the airbag box, if the part of the recovery rope that disengages from the recovery roller is randomly scattered in the airbag box, it may cause the recovery rope to wind around other structures, thereby affecting the operation of other components and being unfavorable for recovering the capsule body. Therefore, a partition chamber is provided to separate the capsule body recovery mechanism, effectively isolating the capsule body recovery mechanism from other components of the drone, thereby avoiding unnecessary mutual interference and damage. At the same time, the setting of the partition chamber can also make the internal structure of the airbag box clearer, facilitating the maintenance and replacement of components. In addition, the setting of the partition chamber can also make the capsule body recovery mechanism safer and more reliable, avoiding unnecessary failures and accidents during the operation of the drone. Therefore, setting a partition chamber in the airbag box and arranging the capsule body recovery mechanism therein can improve the safety and reliability of the drone, reduce the maintenance cost and risk, and have high practicality and economic value.

[0016] Optionally, an anti-reverse winding structure for placing the reverse winding of the recovery rope is provided in the partition chamber. The anti-reverse winding structure includes adjusting rods arranged in parallel along the ejection direction of the capsule body. The adjusting rods are movably connected in the partition chamber, and the moving direction of the adjusting rods is perpendicular to the direction in which the recovery rope disengages from the recovery roller. The moving directions of the two rows of adjusting rods are opposite; a driving member for driving the adjusting rods to move is provided in the partition chamber; the adjusting rods move to drive the recovery rope to disengage from the recovery roller.

[0017] By adopting the above technical solution, when the recovery rope is driven to disengage from the recovery roller, since the recovery rope is not in a tensioned state, under the action of static electricity or friction, the recovery rope may still adhere to the recovery roller. Also, because the other end of the recovery rope is fixedly connected to the capsule body, continuous rotation of the recovery roller may break the recovery rope. Therefore, an anti-reverse winding structure is provided to prevent the recovery rope from winding reversely on the recovery roller.

[0018] When the recovery roller rotates reversely, the adjusting rod moves together. The end of the adjusting rod close to the recovery rope drives the recovery rope to disengage from the adjusting roller. Multiple adjusting rods cooperate together to straighten the recovery rope and prevent the recovery rope from winding reversely on the recovery roller. After the recovery roller stops rotating reversely, the adjusting rod moves in the reverse direction to release the recovery rope, allowing the recovery rope to accumulate in the partition chamber and reducing the resistance when the capsule body pops out.

[0019] Since the adjusting rod is movably connected in the partition chamber, it can prevent the adjusting rod from interfering with and damaging other components during movement, ensuring the stability and reliability of the drone. Therefore, the anti-reverse winding structure can improve the efficiency and safety of the drone capsule recovery, reduce the maintenance cost and risk, and has high practicality and economic value.

[0020] Optionally, one end of the adjusting rod is connected to the driving member, and a force-applying plate is fixedly connected to the other end of the adjusting rod.

[0021] By adopting the above technical solution, the driving member is used to drive the adjusting rod to move. Since the area of the adjusting rod is limited, the force-applying plate is provided to increase the area of the adjusting rod, preventing the adjusting rod from not being able to push against the recovery rope during movement and thus unable to achieve the effect of preventing the recovery rope from winding reversely.

[0022] Optionally, a shovel plate is fixedly connected to the lower end of the side surface of the force-applying plate away from the adjusting rod. The shovel plate is perpendicular to the force-applying plate, and the side surface of the shovel plate away from the force-applying plate is provided with a blade shape.

[0023] By adopting the above technical solution, since the recovery rope may fall to the bottom of the partition chamber, the shovel plate is convenient for picking up the recovery rope from the bottom of the partition chamber. Such a setting can make the process of straightening the recovery rope more stable and smooth.

[0024] When the moving rod moves, the shovel plate and the force-applying plate move together. The blade shape of the shovel plate can make it easier for the shovel plate to pick up the recovery rope, preventing the recovery rope from getting stuck at the bottom end of the force-applying plate and avoiding friction and interference between the recovery rope and the force-applying plate.

[0025] Optionally, the driving member includes a multi-stage cylinder.

[0026] By adopting the above technical solution, the driving member is set as a multi-stage cylinder. Such a setting can endow the driving member with better power and control performance, thereby ensuring the efficiency and safety of the recovery of the bladder.

[0027] The multi-stage cylinder can compress and release the input gas in a certain order, thereby generating higher power and control capabilities. The multi-stage cylinder can adjust the pressure and flow rate of the cylinder according to needs, enabling the adjusting rod to move accurately and drive the recovery rope to smoothly disengage from the recovery roller, avoiding curling and entanglement of the recovery rope. At the same time, since the multi-stage cylinder occupies less space, it is convenient for installation; the multi-stage cylinder is lighter in weight, reducing the burden on the flight of the drone.

[0028] Optionally, when the bladder is received in the airbag box, the length of the recovery rope disengaged from the recovery roller is greater than or equal to the length of the unfolded bladder.

[0029] By adopting the above technical solution, when the bladder inflates, the length of the recovery rope disengaged from the recovery roller is greater than or equal to the length of the unfolded bladder. Such a setting can ensure that the bladder will not be restricted or affected by the recovery rope during the inflation process, thereby improving the efficiency of the bladder in wrapping the airframe.

[0030] In summary, the present application includes the following beneficial technical effects:

[0031] 1. Through the arrangement of the guide rod and the scissor unit, when recovering the bladder, the bladder moves along the guide rod, and the extended end of the bladder finally enters the airbag box, thereby avoiding the possibility of the extended end of the bladder being folded; through the arrangement of the scissor unit, when recovering the bladder, the bladder is folded in a W shape, which is convenient for the bladder to inflate again and reduces the possibility of the bladder getting stuck in the airbag box;

[0032] 2. Through the arrangement of the anti-reverse winding structure, it is avoided that the recovery rope is reversely wound on the recovery roller when driving the recovery rope to disengage from the recovery roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0034] Figure 2 is a schematic diagram of the structure of the anti-collision component in an embodiment of the present application;

[0035] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0036] Description of the reference numerals:

[0037] 1. Body; 2. Anti-collision component; 3. Airbag box; 4. Airbag body; 5. Guide rod; 6. Inflating component; 7. Exhaust valve; 8. Guide ring; 9. Folding mechanism; 10. Scissor unit; 11. Connecting rope; 12. Compartment; 13. Airbag body recovery mechanism; 14. Recovery roller; 15. Recovery rope; 16. Anti-reverse winding structure; 17. Adjusting rod; 18. Driving component; 19. Force-applying plate; 20. Shoveling plate. Detailed implementation manner

[0038] The following will further describe this application in detail with reference to the attached Figures 1 - 3 drawings.

[0039] An embodiment of this application discloses a drone. Referring to Figure 1 and Figure 2 , it includes a body 1 and an anti-collision component 2 arranged on the body 1. The anti-collision component 2 includes an airbag box 3, an airbag body 4, a guide rod 5 and an inflating component 6. In the embodiment of this application, the inflating component 6 adopts an air pump, and the air pump is fixedly connected inside the airbag box 3. The airbag box 3 is fixedly connected to the bottom of the body 1. The inflating component 6 and the airbag body 4 are both arranged in the airbag box 3. An exhaust valve 7 is arranged on the airbag body 4, and a guide ring 8 is arranged on the airbag body 4. In the embodiment of this application, a plurality of guide rings 8 are arranged at intervals along the length direction of the airbag body 4. The guide rod 5 is fixedly connected to the body 1 and arranged along the circumference of the body 1. The guide ring 8 is sleeved on the guide rod 5. In the embodiment of this application, two guide rods 5 are provided, and the two guide rods 5 are arranged in parallel.

[0040] Referring to Figure 2 , a folding mechanism 9 is arranged on the airbag body 4. The folding mechanism 9 includes a plurality of scissor units 10 arranged in parallel along the length direction of the airbag body 4. Adjacent two scissor units 10 are ball-jointed to each other, and the scissor unit 10 is connected to the airbag body 4 through a connecting rope 11; an airbag body recovery mechanism for recovering the airbag body 4 is arranged in the airbag box 3.

[0041] Referring to Figure 2 , a compartment 12 is arranged in the airbag box 3, and the airbag body recovery mechanism is arranged in the compartment 12. The airbag body recovery mechanism includes a recovery roller 14 and a recovery rope 15. The recovery roller 14 is rotatably connected in the compartment 12. A motor for driving the recovery roller 14 to rotate is arranged in the compartment 12. One end of the recovery rope 15 is fixedly connected to the recovery roller 14, and the other end of the recovery rope 15 is fixedly connected to one end of the airbag body 4 extending out of the airbag box 3. When the airbag body 4 is received in the airbag box 3, a part of the recovery rope 15 disengages from the recovery roller 14, and the length of the recovery rope 15 disengaging from the recovery roller 14 is greater than or equal to the unfolded length of the airbag body 4.

[0042] Referring to Figure 2 and Figure 3, an anti-reverse structure 16 for preventing the recovery rope 15 from reverse winding is provided in the partition chamber 12. The anti-reverse structure 16 includes two rows of adjusting rods 17 arranged in parallel along the spraying direction of the bladder 4. The two rows of adjusting rods 17 are arranged staggeredly. The adjusting rods 17 are movably connected in the partition chamber 12. The moving direction of the adjusting rods 17 is perpendicular to the direction in which the recovery rope 15 disengages from the recovery roller 14. The moving directions of the two rows of adjusting rods 17 are opposite to each other. A driving member 18 for driving the movement of the adjusting rods 17 is provided in the partition chamber 12. The driving member 18 includes a multi-stage cylinder. The adjusting rods 17 move to drive the recovery rope 15 to disengage from the recovery roller 14.

[0043] Referring to Figure 3 , one end of the adjusting rod 17 is connected to the driving member 18, and a force-applying plate 19 is fixedly connected to the other end of the adjusting rod 17. Shovel plates 20 are fixedly connected to the lower ends of the side surfaces of the force-applying plate 19 away from the adjusting rod 17. The height of the force-applying plate 19 is equal to the height of the partition chamber 12. The shovel plates 20 are perpendicular to the force-applying plate 19. The side surface of the shovel plate 20 away from the force-applying plate 19 is provided in a blade shape.

[0044] The implementation principle of an unmanned aerial vehicle according to an embodiment of the present application is as follows: When the airframe 1 falls, the inflating member 6 inflates the bladder. The bladder inflates and expands. The guiding ring 8 slides along the guiding rod 5, so that the bladder extends along the guiding rod 5 to wrap the airframe 1. The scissor unit 10 unfolds as the bladder expands. When passing through the bent part of the airframe 1, the adjacent two scissor units 10 rotate relative to each other.

[0045] When recovering the unmanned aerial vehicle, the exhaust valve 7 on the bladder 4 is opened, and the recovery roller 14 is driven to rotate. The recovery roller 14 rotates to wind the recovery rope 15 around the recovery roller 14. The bladder 4 moves along the guiding rod 5. The extended end of the bladder 4 finally enters the airbag box 3, thereby preventing the extended end of the bladder 4 from folding. Through the setting of the scissor unit 10, when recovering the bladder 4, the bladder 4 is folded in a W shape, which is convenient for the bladder 4 to inflate and expand again, and reduces the possibility of the bladder 4 getting stuck in the airbag box 3.

[0046] After the bladder 4 is recovered, the recovery roller 14 is driven to reverse. The recovery rope 15 disengages from the recovery pipe. Multiple adjusting rods 17 cooperate together to straighten the recovery rope 15 to prevent the recovery rope 15 from reverse winding on the recovery roller 14. When the recovery roller 14 stops reversing, the adjusting rods 17 move in the opposite direction to loosen the recovery rope 15, so that the recovery rope 15 accumulates in the partition chamber 12, reducing the resistance when the bladder 4 pops out.

[0047] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An unmanned aerial vehicle, comprising a fuselage (1) and an anti-collision assembly (2) provided on the fuselage (1), characterized in that: The anti-collision component (2) includes an airbag box (3), an airbag body (4), a guide rod (5), and an inflator (6). The airbag box (3) is fixedly connected to the bottom of the body (1). The inflator (6) and the airbag body (4) are both arranged in the airbag box (3). An exhaust valve (7) is arranged on the airbag body (4). A guide ring (8) is arranged on the airbag body (4). The guide rod (5) is fixedly connected to the body (1) and is arranged along the circumferential direction of the body (1). The guide ring (8) is sleeved on the guide rod (5). A folding mechanism (9) is arranged on the airbag body (4). The folding mechanism (9) includes a plurality of scissor units (10) arranged in parallel along the length direction of the airbag body (4). Adjacent two scissor units (10) are ball-jointed to each other. The scissor unit (10) is connected to the airbag body (4) through a connecting rope (11). An airbag body (4) recovery mechanism for recovering the airbag body (4) is arranged in the airbag box (3).

2. The drone according to claim 1, wherein: The airbag body (4) recovery mechanism includes a recovery roller (14) and a recovery rope (15). The recovery roller (14) is rotatably connected in the airbag box (3). One end of the recovery rope (15) is fixedly connected to the recovery roller (14), and the other end of the recovery rope (15) is fixedly connected to one end of the airbag body (4) extending out of the airbag box (3). When the airbag body (4) is received in the airbag box (3), a part of the recovery rope (15) is separated from the recovery roller (14).

3. The drone according to claim 2, characterized in that: A partition chamber (12) is arranged in the airbag box (3), and the airbag body (4) recovery mechanism is arranged in the partition chamber (12).

4. A drone according to claim 3, characterized in that: An anti-reverse winding structure (16) for placing the reverse winding of the recovery rope (15) is arranged in the partition chamber (12). The anti-reverse winding structure (16) includes adjusting rods (17) arranged in parallel along the spraying direction of the airbag body (4). The adjusting rods (17) are movably connected in the partition chamber (12). The moving direction of the adjusting rods (17) is perpendicular to the direction in which the recovery rope (15) is separated from the recovery roller (14). The moving directions of two rows of the adjusting rods (17) are opposite. A driving member (18) for driving the movement of the adjusting rods (17) is arranged in the partition chamber (12). The adjusting rods (17) move to drive the recovery rope (15) to be separated from the recovery roller (14).

5. The drone according to claim 4, wherein: One end of the adjusting rod (17) is connected to the driving member (18), and the other end of the adjusting rod (17) is fixedly connected with a force-applying plate (19).

6. The drone according to claim 5, characterized in that: Shovel plates (20) are fixedly connected to the lower ends of the side surfaces of the force-applying plate (19) far away from the adjusting rod (17). The shovel plates (20) are perpendicular to the force-applying plate (19). The side surfaces of the shovel plates (20) far away from the force-applying plate (19) are arranged in a blade shape.

7. The drone according to claim 4, characterized in that: The driving member (18) includes a multi-stage air cylinder.

8. The drone according to claim 4, wherein: When the airbag body (4) is received in the airbag box (3), the length of the recovery rope (15) separated from the recovery roller (14) is greater than or equal to the unfolded length of the airbag body (4).

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