Unmanned aerial vehicle capable of achieving air crash protection

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle capable of achieving air crash protection, which comprises an unmanned aerial vehicle body, a support is welded on the outer wall of the bottom of the unmanned aerial vehicle body, a pair of symmetrically distributed brackets are welded on the outer wall of the support, and a sliding column is welded on the outer wall of the end part of each bracket; a pair of symmetrically-distributed avoiding grooves is formed in the outer wall of the end of the support, and a top column is slidably inserted into the support. According to the unmanned aerial vehicle, through the arranged slow descending mechanism, when the unmanned aerial vehicle body crashes, a parachute is blown out of a conical groove 531 and is unfolded, the falling speed of the unmanned aerial vehicle body can be reduced, large impact generated when the unmanned aerial vehicle body 1 falls to the ground is avoided, through the arranged floating mechanism, airflow enters an air bag along an air channel, and the unmanned aerial vehicle body 1 is prevented from falling to the ground. Therefore, the air bag can drive the unmanned aerial vehicle body to float on the water surface, and the situation that the unmanned aerial vehicle body sinks to the water bottom and consequently salvage is inconvenient is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of unmanned aerial vehicles, and in particular relates to an unmanned aerial vehicle capable of protecting against crashes. Background Art

[0002] Unmanned aerial vehicles, also known as drones, are unmanned aerial vehicles that are controlled by radio remote control equipment and self-contained program control devices. They can replace manned aircraft to complete relatively dangerous flight missions and are widely used in agriculture, express delivery, disaster relief, wildlife observation, film and television shooting, and military fields. During the flight of a drone, collisions or circuit failures often occur, causing the drone to crash.

[0003] However, existing drones cannot slow down during the fall and can only cushion the impact when falling to the ground, resulting in poor protection. In addition, the falling position of the drone cannot be determined. When the drone falls into the water, it needs to be salvaged, which is time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a crash-protected drone.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A crash-protective drone comprises a drone body, a support is welded on the bottom outer wall of the drone body, a pair of symmetrically distributed brackets are welded on the outer wall of the support, a sliding column is welded on the outer wall of the end of each bracket, a pair of symmetrically distributed avoidance grooves are opened on the outer wall of the end of the support, a top column is slidably inserted in the support, a rubber gasket is bonded to the end of the top column, a buffer spring is welded between the outer wall of the top column and the inside of the support, a pair of symmetrically distributed connecting seats are welded on the outer wall of the top column, the connecting seats are slidably inserted in the avoidance groove, a grab hook is rotatably connected to the outer wall of each connecting seat via a rotating shaft, a sliding groove is opened on the outer wall of each grab hook, the sliding column corresponds to the sliding groove one by one, and each sliding column is slidably inserted in the corresponding sliding groove, and a floating mechanism and a slow-descent mechanism are provided on the drone body.

[0006] In the above-mentioned crash-protected drone, a fixing groove is provided on the top outer wall of the drone body, and storage grooves are provided on the outer walls of the drone body symmetrically distributed on both sides of the fixing groove. The fixing grooves extend into the storage grooves, and an installation groove is provided on the bottom inner wall of each storage groove. An acceleration sensor is bonded to the top outer wall of the drone body.

[0007] In the above-mentioned crash-protected drone, the floating mechanism includes an airbag, and the drone body is symmetrically distributed on the top outer wall on both sides of the fixing groove and connected with motors by bolts, and each of the motors is welded with an extension wing on the main shaft, and the extension wings correspond to the storage grooves one by one, and each extension wing is rotatably plugged into the corresponding storage groove inner wall through a rotating shaft.

[0008] In the above-mentioned crash-protected drone, an air pump is installed in the fixed groove, and the output end of the air pump is connected to a pair of connecting pipes via a flange, and an airway is opened in each of the extending wings, and the airways correspond to the connecting pipes one by one, and the connecting pipes are connected to the corresponding airways.

[0009] In the above-mentioned crash-protected drone, a reel is rotatably inserted in each of the installation grooves, a fixed shaft is welded on the inner wall of each of the installation grooves, a circular groove is opened on the outer wall of one side of each of the reels, the fixed shaft is inserted in the circular groove, a spring is welded between the inner wall of each circular groove and the outer wall of the fixed shaft, an airbag is wrapped on the outer wall of each reel, and one end of each airbag away from the reel is bonded to the outer wall of the extending wing, the airbags correspond to the airways one by one, and the airbags are connected to the corresponding airways.

[0010] In the above-mentioned crash-protected drone, the slow-descent mechanism includes a warning ball and a parachute, the warning ball is welded to the outer wall of the extended wing at one end away from the motor, a plurality of warning lights are bonded to the outer wall of each of the warning balls, an air chamber and a conical groove are provided in each of the warning balls, the air chamber is connected to the airway, and a plurality of through holes are provided on the inner wall of the air chamber on one side close to the conical groove.

[0011] In the above-mentioned crash-protected drone, the conical groove gradually shrinks in the direction away from the motor, and a ball plug is installed in each conical groove, and the diameter of the ball plug is larger than the opening diameter of the conical groove.

[0012] In the above-mentioned crash-protected drone, a plurality of thin ropes are bonded to the outer wall of each ball plug, a parachute is bonded to a point of the thin rope away from the ball plug, and the parachute folding plug is placed in the conical groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the slow-descent mechanism, when the drone crashes, the acceleration sensor can control the air pump to inflate the airway, and the airflow enters the air chamber along the airway and finally enters the conical groove, and finally blows the parachute out of the conical groove. After the parachute is deployed, the falling speed of the drone can be reduced to avoid a large impact when the drone lands. 2. Through the floating mechanism, when the drone crashes, the acceleration sensor controls the motor to rotate, so that the extended wings are rotated out of the storage slot. During the rotation of the extended wings, the airbag wrapped on the reel will be unfolded, thereby increasing the air resistance of the drone body and reducing the falling speed of the drone body. At the same time, the acceleration sensor controls the air pump to inflate the airway, and the airflow enters the airbag along the airway. When the drone body falls into the water, the airbag can drive the drone body to float on the water surface, preventing the drone body from sinking to the bottom of the water, resulting in inconvenience in salvage; To sum up, by setting up the slow-descent mechanism, when the drone body crashes, the parachute is blown out from the conical groove 531 and deployed, which can reduce the falling speed of the drone body and avoid a large impact when the drone body 1 lands. By setting up the floating mechanism, the airflow enters the airbag along the airway, so that the airbag can drive the drone body to float on the water surface, avoiding the drone body from sinking to the bottom of the water, resulting in inconvenience in salvage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic top view of the overall structure of the present invention.

[0015] Figure 2 It is a bottom view schematic diagram of the overall structure of the present invention.

[0016] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the support assembly of the present invention.

[0017] Figure 4 It is a three-dimensional schematic diagram of the floating mechanism assembly of the present invention.

[0018] Figure 5 It is a cross-sectional schematic diagram of the slow-descent mechanism assembly of the present invention.

[0019] Figure 6 It is a three-dimensional cross-sectional schematic diagram of the reel assembly of the present invention.

[0020] Figure 7 It is a three-dimensional cross-sectional schematic diagram of the drone body of the present invention.

[0021] Figure 8 It is a three-dimensional schematic diagram of the working state of the slow-descent mechanism and the floating mechanism of the present invention.

[0022] Fig. 9 It is a three-dimensional schematic diagram of the working state of the grab hook assembly of the present invention.

[0023] In the figure: 1. UAV body; 11. Storage slot; 111. Installation slot; 112. Fixed shaft; 13. Fixed slot; 14. Acceleration sensor; 2. Support; 21. Bracket; 211. Sliding column; 22. Avoidance slot; 3. Top column; 31. Connecting seat; 32. Buffer spring; 33. Rubber gasket; 4. Grab hook; 41. Slide slot; 5. Extendable wing; 51. Motor; 52. Airway; 521. Air chamber; 522. Through hole; 53. Warning ball; 531. Conical slot; 54. Warning light; 55. Airbag; 6. Air pump; 61. Connecting pipe; 7. Ball plug; 71. String; 72. Parachute; 8. Reel; 81. Spring; 82. Circular slot. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] See also Figure 1-Figure 9 The present invention provides a technical solution: comprising a drone body 1, a support 2 is welded on the bottom outer wall of the drone body 1, a pair of symmetrically distributed brackets 21 are welded on the outer wall of the support 2, a sliding column 211 is welded on the end outer wall of each bracket 21, a pair of symmetrically distributed avoidance grooves 22 are opened on the end outer wall of the support 2, a top column 3 is slidably inserted in the support 2, a rubber gasket 33 is bonded to the end of the top column 3, a buffer spring 32 is welded between the outer wall of the top column 3 and the inside of the support 2, a pair of symmetrically distributed connecting seats 31 are welded on the outer wall of the top column 3, and the connecting seats 31 are slidably inserted In the avoidance groove 22, a grab hook 4 is rotatably connected to the outer wall of each connecting seat 31 through a rotating shaft, a slide groove 41 is opened on the outer wall of each grab hook 4, and the slide column 211 corresponds to the slide groove 41 one by one. Each slide column 211 is slidably inserted in the corresponding slide groove 41. A floating mechanism and a slow-descent mechanism are provided on the drone body 1. A fixing groove 13 is opened on the top outer wall of the drone body 1. Storage grooves 11 are opened on the outer walls of the drone body 1 symmetrically distributed on both sides of the fixing groove 13. The fixing grooves 13 extend into the storage grooves 11, and an installation groove 111 is opened on the bottom inner wall of each storage groove 11.

[0027] A rubber gasket 33 is bonded to the end of the top column 3, which can reduce the wear of the top column 3 caused by impact. The buffer spring 32 is provided to buffer the impact force generated by the impact. In the initial state, the buffer spring 32 is in an extended state and the grab hook 4 is in a horizontal state.

[0028] The above content is further elaborated: when the drone body 1 falls, the top column 3 will first contact the ground, causing the support 2 to compress the buffer spring 32, thereby buffering the impact force generated by the collision. In the process of compressing the buffer spring 32, the support 2 drives the bracket 21 to continue to approach the ground, so that the bracket 21 drives the grappling hook 4 to swing downward, and then the grappling hook 4 can grab the ground or other objects on the ground, avoiding the drone being bounced up when hitting the ground, causing the damage to the drone to be aggravated.

[0029] Specifically, the floating mechanism includes an airbag 55, and the drone body 1 is symmetrically distributed on the top outer wall on both sides of the fixed groove 13, and the motor 51 is connected by bolts. An extension wing 5 is welded on the main shaft of each motor 51, and the extension wing 5 corresponds to the storage groove 11 one by one. Each extension wing 5 is plugged into the inner wall of the corresponding storage groove 11 through a rotating shaft. An air pump 6 is installed in the fixed groove 13, and the output end of the air pump 6 is connected to a pair of connecting pipes 61 through a flange. An airway 52 is opened in each extension wing 5, and the airway 52 corresponds to the connecting pipe 61 one by one. The connecting pipe 61 is connected to the corresponding airway 52, and each installation A reel 8 is rotatably inserted in the mounting groove 111, a fixed shaft 112 is welded on the inner wall of each mounting groove 111, a circular groove 82 is opened on the outer wall of one side of each reel 8, the fixed shaft 112 is inserted in the circular groove 82, a spring 81 is welded between the inner wall of each circular groove 82 and the outer wall of the fixed shaft 112, an airbag 55 is wound on the outer wall of each reel 8, and one end of each airbag 55 away from the reel 8 is bonded to the outer wall of the extending wing 5, the airbag 55 corresponds to the airway 52 one by one, and the airbag 55 is connected to the corresponding airway 52, and an acceleration sensor 14 is bonded to the top outer wall of the drone body 1.

[0030] The acceleration sensor 14 can detect the acceleration of the drone body 1 in the direction of gravity. When the drone body 1 falls, it is in a free fall state. At this time, the acceleration of the drone body 1 in the direction of gravity is the same as the acceleration of gravity. The acceleration sensor 14 can drive the motor 51 and the air pump 6 to operate. The motor 51 can drive the extending wings 5 ​​to rotate, and the air pump 6 can inflate the airway 52.

[0031] The above-mentioned floating mechanism is further explained: when the drone body 1 falls, the acceleration sensor 14 controls the motor 51 to rotate, so that the extended wings 5 ​​are rotated out of the storage slot 11. During the rotation of the extended wings 5, the airbag 55 wrapped on the reel 8 will be unfolded, thereby increasing the air resistance of the drone body 1 and reducing the falling speed of the drone body 1. At the same time, the acceleration sensor 14 controls the air pump 6 to inflate the air channel 52, and the air flow enters the airbag 55 along the air channel 52. When the drone body 1 falls into the water, the airbag 55 can drive the drone body 1 to float on the water surface, avoiding the drone body 1 from sinking to the bottom of the water, which makes it inconvenient to salvage.

[0032] Specifically, the slow descent mechanism includes a warning ball 53 and a parachute 72. The warning ball 53 is welded to the outer wall of the end of the extending wing 5 away from the motor 51. A number of warning lights 54 are bonded to the outer wall of each warning ball 53. An air chamber 521 and a conical groove 531 are provided in each warning ball 53. The air chamber 521 is connected to the airway 52. ​​A number of through holes 522 are provided on the inner wall of the air chamber 521 on one side close to the conical groove 531. The conical groove 531 gradually shrinks away from the motor 51. A ball plug 7 is installed in each conical groove 531. The diameter of the ball plug 7 is larger than the opening diameter of the conical groove 531. A number of thin ropes 71 are bonded to the outer wall of each ball plug 7. A parachute 72 is bonded to a point of the thin rope 71 away from the ball plug 7. The parachute 72 is folded and placed in the conical groove 531.

[0033] By setting a warning light 54, the falling position of the drone body 1 can be located at night, and the flashing warning light 54 can remind pedestrians below to take shelter in time. A plurality of through holes 522 are provided on the inner wall of the air chamber 521 close to the conical groove 531 to ensure that the air chamber 521 is connected with the conical groove 531 to avoid the situation where the ball plug 7 blocks the through hole 522. The conical groove 531 gradually shrinks away from the motor 51. The diameter of the ball plug 7 is larger than the opening diameter of the conical groove 531, so that the ball plug 7 can close the outlet of the conical groove 531 to avoid the gas in the airbag 55 from leaking through the conical groove 531, causing the airbag 55 to lose buoyancy. In the initial state, the parachute 72 is folded and plugged in the conical groove 531 to seal the opening of the conical groove 531.

[0034] The above-mentioned slow descent mechanism is further explained as follows: when the air pump 6 inflates the air channel 52, the airflow enters the air chamber 521 along the air channel 52, and finally enters the conical groove 531. As the air pressure inside the conical groove 531 increases, the airflow blows the parachute 72 out of the conical groove 531. Since the drone body 1 is in free fall, the surrounding airflow moves upward relative to the drone body 1, so that the parachute 72 will be quickly deployed, thereby reducing the falling speed of the drone body 1 and avoiding a large impact when the drone body 1 lands. After the parachute 72 is deployed, it will pull the thin rope 71, so that the thin rope 71 pulls the ball plug 7 outward, so that the ball plug 7 closes the conical groove 531 to avoid gas leakage in the airbag 55.

[0035] The working principle and use process of the present invention are as follows: when the drone body 1 falls, the acceleration sensor 14 detects the acceleration change, thereby starting the motor 51 and the air pump 6, and the motor 51 drives the extended wing 5 to rotate out of the storage slot 11. Under the action of the floating mechanism, the air bag 55 wound on the reel 8 is unfolded, thereby increasing the air resistance of the drone body 1 and reducing the falling speed of the drone body 1. The air pump 6 inflates the air bag 55, so that the air bag 55 can drive the drone body 1 to float on the water surface, avoiding the drone body 1 from falling into the water and sinking to the bottom. At the same time, under the action of the slow-down mechanism, the air pump 6 will land. The parachute 72 is blown out from the conical groove 531. After the parachute 72 is deployed, it can reduce the falling speed of the drone body 1 and avoid a large impact when the drone body 1 lands. When the drone body 1 falls to the ground, the top column 3 will first contact the ground, causing the support 2 to compress the buffer spring 32, thereby buffering the impact force generated by the collision. The support 2 drives the bracket 21 to continue to approach the ground, so that the bracket 21 drives the grappling hook 4 to swing downward, and then the grappling hook 4 can grab the ground or other objects on the ground, thereby avoiding the drone body 1 from being bounced up when it hits the ground, causing the damage to the drone body 1 to be aggravated.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crash-protected drone, comprising a drone body (1), characterized in that: A support (2) is welded to the outer wall of the bottom of the drone body (1); a pair of symmetrically distributed brackets (21) are welded to the outer wall of the support (2); a sliding column (211) is welded to the outer wall of the end of each bracket (21); a pair of symmetrically distributed avoidance grooves (22) are opened on the outer wall of the end of the support (2); a top column (3) is slidably inserted in the support (2); a rubber gasket (33) is bonded to the end of the top column (3); a buffer spring (32) is welded between the outer wall of the top column (3) and the inside of the support (2); a pair of symmetrically distributed connecting seats (31) are welded to the outer wall of the top column (3); the connecting seats (31) are slidably inserted in the avoidance grooves (22); and the outer wall of each connecting seat (31) is provided with a rubber gasket (33) bonded to the end of the top column (3). The rotating shaft is rotatably connected to a grab hook (4), a slide groove (41) is provided on the outer wall of each grab hook (4), the slide column (211) corresponds to the slide groove (41) one by one, and each slide column (211) is slidably inserted in the corresponding slide groove (41), a floating mechanism and a slow-descent mechanism are provided on the drone body (1), a fixing groove (13) is provided on the top outer wall of the drone body (1), and storage grooves (11) are provided on the outer walls of the drone body (1) symmetrically distributed on both sides of the fixing groove (13), the fixing groove (13) extends into the storage groove (11), and a mounting groove (111) is provided on the bottom inner wall of each storage groove (11), and an acceleration sensor (14) is bonded to the top outer wall of the drone body (1).

2. The crash-protected drone according to claim 1, characterized in that: The floating mechanism comprises an air bag (55), and the drone body (1) is symmetrically distributed on the top outer wall on both sides of the fixing groove (13) and is connected to the motor (51) by bolts, and each of the motors (51) is welded with an extension wing (5) on the main shaft, and the extension wings (5) correspond to the storage grooves (11) one by one, and each extension wing (5) is rotatably plugged into the inner wall of the corresponding storage groove (11) through a rotating shaft.

3. The crash-protected drone according to claim 2, characterized in that: An air pump (6) is installed in the fixing groove (13), and an output end of the air pump (6) is connected to a pair of connecting pipes (61) via a flange. An air channel (52) is provided in each of the extending wings (5), and the air channels (52) correspond to the connecting pipes (61) one by one. The connecting pipes (61) are connected to the corresponding air channels (52).

4. The crash-protected drone according to claim 3, characterized in that: A reel (8) is rotatably inserted in each of the mounting grooves (111), a fixed shaft (112) is welded on the inner wall of each of the mounting grooves (111), a circular groove (82) is opened on the outer wall of one side of each of the reels (8), the fixed shaft (112) is inserted in the circular groove (82), a spring (81) is welded between the inner wall of each of the circular grooves (82) and the outer wall of the fixed shaft (112), an airbag (55) is wound on the outer wall of each of the reels (8), one end of each of the airbags (55) away from the reel (8) is bonded to the outer wall of the extension wing (5), the airbags (55) correspond to the airways (52) one by one, and the airbags (55) are connected to the corresponding airways (52).

5. The crash-protected drone according to claim 1, characterized in that: The slow-descent mechanism comprises a warning ball (53) and a parachute (72). The warning ball (53) is welded to the outer wall of the extension wing (5) at one end away from the motor (51). A plurality of warning lights (54) are bonded to the outer wall of each warning ball (53). An air chamber (521) and a conical groove (531) are provided in each warning ball (53). The air chamber (521) is connected to the airway (52). A plurality of through holes (522) are provided on the inner wall of the air chamber (521) on one side close to the conical groove (531).

6. The crash-protected drone according to claim 5, characterized in that: The conical groove (531) gradually shrinks in a direction away from the motor (51); a ball plug (7) is installed in each conical groove (531); and the diameter of the ball plug (7) is larger than the opening diameter of the conical groove (531).

7. A crash-protected UAV according to claim 6, characterized in that: A plurality of thin ropes (71) are bonded to the outer wall of each ball plug (7), a parachute (72) is bonded to a point of the thin rope (71) away from the ball plug (7), and the parachute (72) is folded and placed in the conical groove (531).

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