Unmanned aerial vehicle blocking device

Abstract

The invention discloses an unmanned aerial vehicle blocking device which comprises a first mounting seat connected to the front side of a fuselage of an unmanned aerial vehicle; the second mounting seat is connected to the rear side of the machine body; the buffering stop mechanism comprises a connecting piece and a damping structure, and one end of the connecting piece is hinged to the second mounting seat; two ends of the telescopic driving mechanism are respectively hinged with the middle part of the connecting piece and the first mounting seat; one end of the blocking mechanism is hinged to the first mounting base, and the middle is hinged to the damping structure; the damping structure can apply pressing force to the ground to the blocking mechanism before the blocking mechanism is hung on the net, and can contract after the blocking mechanism is hung on the net, so that vibration borne by the blocking mechanism when the net is hung can be absorbed. According to the unmanned aerial vehicle arresting device, the height of the arresting mechanism during net hanging can be always controlled to be below the rotating end face of the rear propeller, so that the unmanned aerial vehicle arresting device can be applied to an unmanned aerial vehicle with the rear propeller.

Description

Technical Field

[0001] This invention belongs to the field of unmanned aerial vehicle (UAV) technology, and specifically relates to a UAV interception device. Background Technology

[0002] Arrested landing is a method used for drone recovery, typically achieved by attaching a net to an arresting mechanism. The arresting mechanism is usually installed on the underside of the drone and retracts during flight, lowering itself upon landing. However, because the arresting arm's connection point is inside the fuselage, the net attachment point of the arresting hook at the tail of the arm is positioned too high, making it unsuitable for drones with rear-mounted propellers. Summary of the Invention

[0003] The purpose of this invention is to disclose a drone arresting device to solve the technical problem that the high position of the arresting hook at the tail of the arresting bar in the prior art makes it difficult to adapt to drones with rear propellers.

[0004] To achieve the above objectives, the present invention discloses a drone interception device, comprising: The first mounting bracket is attached to the front side of the drone's fuselage; The second mounting base is separated from the first mounting base and is connected to the rear side of the body; A buffer stop mechanism includes a connecting member and a shock-absorbing structure that are hinged together, wherein one end of the connecting member is hinged to the second mounting base; A telescopic drive mechanism, wherein both ends of the telescopic drive mechanism are respectively hinged to the middle part of the connector and the first mounting base; The blocking mechanism is hinged at one end to the first mounting base and hinged in the middle to the shock-absorbing structure. The shock-absorbing structure can apply a pressing force to the ground to the barrier mechanism before the net is hung, and can retract after the net is hung to absorb the vibration experienced by the barrier mechanism during the hanging process.

[0005] As an optional implementation, the blocking mechanism includes a connecting arm, a blocking rod, and a blocking hook disposed on the blocking rod. The connecting arm has a first end and a second end opposite to each other. The first end and the middle region of the connecting arm are respectively hinged to the first mounting base and the shock-absorbing structure. The end of the blocking rod away from the blocking hook is hinged to the second end so as to be able to swing relative to the connecting arm in the left-right direction.

[0006] As an optional implementation, the blocking mechanism further includes a centering structure connected to the second end and rotatably configured with the blocking rod. The centering structure is used to apply an elastic force to the blocking rod when the blocking hook is attached to the net and the blocking rod is subjected to an external force and swings in the left-right direction, so that the blocking rod can be reset under the drive of the elastic force of the centering structure when the external force disappears.

[0007] As an optional implementation, the centering structure includes a mounting bracket, a cam, a first elastic element, and a guide shaft; The mounting bracket is mounted on the adapter arm and is rotatably mounted on the barrier arm. The end of the mounting bracket facing the barrier arm is provided with a wave-shaped guide surface, which has wave crests and troughs. The cam is connected to one end of the guide shaft and is slidably disposed with the waveform guide surface, for moving from the trough position to the crests on both sides; The guide shaft is slidably disposed relative to the barrier bar; The two ends of the first elastic element act on the guide shaft and the blocking rod respectively, and are used to apply an elastic force to the guide shaft.

[0008] As an optional implementation, the barrier bar has an installation cavity, and the centering structure further includes a guide sleeve. The guide sleeve is connected to the barrier bar and is at least partially disposed in the installation cavity. The guide sleeve has a receiving cavity, and the first elastic element is disposed in the receiving cavity. Its two ends act on the guide shaft and the guide sleeve, respectively. The guide shaft is slidably disposed in the receiving cavity.

[0009] As an optional implementation, the guide shaft passes through the end of the guide sleeve away from the adapter arm, the guide sleeve is provided with a limiting hole, the guide shaft is slidably disposed in the limiting hole, and the cross-section of the guide shaft in the length direction and the axial cross-section of the limiting hole are non-circular surfaces.

[0010] As an optional implementation, the blocking mechanism further includes a limiting structure connected to the adapter arm, which is used to limit the swing angle of the blocking bar in the left-right direction.

[0011] As an optional implementation, the adapter arm includes two separate arms arranged at an acute angle and a cross arm connecting the two separate arms, the cross arm being hinged to the buffer stop mechanism.

[0012] As an optional implementation, the hinge point between the telescopic drive mechanism and the first mounting base is offset from the center of the first mounting base, and the hinge point between the telescopic drive mechanism and the connector is located to the side of the connector.

[0013] As an alternative embodiment, the first mounting seat includes a first seat body, a first connecting ear and a third connecting ear provided on the first seat body. One end of the telescopic driving mechanism is rotatably provided on the first connecting ear, and the arresting mechanism is rotatably provided on the third connecting ear. The cross-section of the first seat body in the length direction is in a shape of a Chinese character 'hui'.

[0014] Compared with the prior art, the beneficial effects of the unmanned aerial vehicle arresting device of the present invention are as follows: For the unmanned aerial vehicle arresting device of the present invention, the first mounting seat and the second mounting seat are used as connection points for connecting the fuselage, and are respectively used for铰接 connecting the arresting mechanism and the buffer stopping mechanism. When the telescopic driving mechanism drives the connecting member in the buffer stopping mechanism to rotate relative to the second mounting seat, the rotation of the connecting member relative to the second mounting seat can drive the movement of the shock absorption structure, and the shock absorption structure drives the movement of the arresting mechanism. At the same time, before the net is hung, the shock absorption structure can apply a pressing force to the arresting mechanism to make the arresting mechanism close to the ground, avoiding the situation that the arresting mechanism bounces too much and causes the failure of hanging the net; when the arresting mechanism swings upward after hanging the net, the shock absorption structure can absorb the vibration generated by the tension applied by the arresting rope. At the same time, due to the setting of the shock absorption structure, the height of the arresting mechanism when hanging the net is limited, so that when the unmanned aerial vehicle arresting device of the present application is applied to an unmanned aerial vehicle with a rear propeller, the hanging height of the arresting mechanism and the arresting rope is always controlled below the rotating end face of the rear propeller, ensuring the stability and safety of the arresting recovery of the rear propeller type unmanned aerial vehicle. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional schematic diagram of a perspective of the unmanned aerial vehicle arresting device in an embodiment of the present invention before the net is hung; Figure 2 is Figure 1 a three-dimensional schematic diagram of another perspective of the unmanned aerial vehicle arresting device in Figure 3 is Figure 1 a structural schematic diagram of the unmanned aerial vehicle arresting device in Figure 4 is Figure 1 a schematic diagram of the movement direction of the arresting mechanism of the unmanned aerial vehicle arresting device in Figure 5 is Figure 1A schematic diagram of the drone interception device when it is attached to the net. Figure 6 yes Figure 1 A schematic diagram showing the movement direction of the drone arresting device as it changes from the lowering state to the recovery state. Figure 7 yes Figure 6 A 3D diagram of the drone's interceptor device in the recovery state; Figure 8 yes Figure 7 A schematic diagram of the structure of the drone interception device in the recovery state; Figure 9 yes Figure 7 Enlarged schematic diagram of point I in the middle; Figure 10 yes Figure 8 A schematic diagram of the blocking mechanism in the diagram; Figure 11 yes Figure 10 Enlarged schematic diagram at point II; Figure 12 yes Figure 10 A cross-sectional schematic diagram of the blocking mechanism in the diagram; Figure 13 yes Figure 12 Enlarged schematic diagram at point III; Figure 14 yes Figure 10 A schematic diagram of the centralization structure in the text; Figure 15 yes Figure 14 A schematic diagram of the decomposition of the centralization structure in the text; Figure 16 yes Figure 1 A schematic diagram of the vibration damping structure in the diagram; Figure 17 This is a schematic diagram of the drone blocking device of this invention installed on a drone and in the state of being netted.

[0017] Explanation of key figure labels: 100-UAV arresting device, 10-First mounting base, 11-First seat body, 12-First connecting ear, 13-Third connecting ear, 20-Second mounting base, 21-Second seat body, 22-Second connecting ear, 30-Buffer stop mechanism, 31-Connector, 32-Shock absorption structure, 321-Hydraulic shock absorber, 322-Second elastic element, 40-Telescopic drive mechanism, 50-Arresting mechanism, 51-Adapter arm, 511-Split arm, 512-Horizontal arm, 52-Arresting rod, 521-Mounting cavity, 53-Arresting hook, 54-Limiting structure, 541-Limiting block, 55 - Centralization structure, 551- Mounting bracket, 5511- Waveform guide surface, 5512- Wave crest, 5513- Wave trough, 552- Cam, 553- First elastic element, 554- Guide shaft, 5541- Limiting plane, 555- Guide sleeve, 5551- Receiving cavity, 5552- Limiting hole, 5553- Connecting part, 5554- Guide part, 60- Lifting ring, 70- Locking mechanism, 71- Electric push rod, 72- Locking hook, 200- Unmanned aerial vehicle, 210- Fuselage, 220- Front landing gear, 230- Rear landing gear, 240- Rear propeller, 300- Arresting rope. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0022] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0023] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0024] Please see Figures 1 to 17 This application provides a drone blocking device 100, including a first mounting base 10, a second mounting base 20, a buffer stop mechanism 30, a telescopic drive mechanism 40, and a blocking mechanism 50.

[0025] Please refer to Figures 1 to 3 The first mounting base 10 is connected to the front side of the fuselage 210 of the UAV 200; the second mounting base 20 is separated from the first mounting base 10 and connected to the rear side of the fuselage 210; the buffer stop mechanism 30 includes a connector 31 and a shock-absorbing structure 32 that are hinged together, with one end of the connector 31 hinged to the second mounting base 20; the two ends of the telescopic drive mechanism 40 are respectively hinged to the middle part of the connector 31 and the first mounting base 10; the blocking mechanism 50 is hinged to the first mounting base 10 at one end and to the shock-absorbing structure 32 at the middle part; wherein, the shock-absorbing structure 32 can apply a pressing force to the blocking mechanism 50 on the ground before the blocking mechanism 50 is hung with the net, and can retract after the blocking mechanism 50 is hung with the net, so as to absorb the vibration of the blocking mechanism 50 when the net is hung.

[0026] The aforementioned drone arresting device 100 uses a first mounting base 10 and a second mounting base 20 as connection points to the fuselage 210, and these are respectively used for hinged connection between the arresting mechanism 50 and the buffer stop mechanism 30. When the telescopic drive mechanism 40 drives the connecting member 31 in the buffer stop mechanism 30 to rotate relative to the second mounting base 20, the rotation of the connecting member 31 relative to the second mounting base 20 drives the movement of the shock-absorbing structure 32, which in turn drives the movement of the arresting mechanism 50. Simultaneously, before the net is attached, the shock-absorbing structure 32 can apply pressure to the arresting mechanism 50 to bring it closer to the ground, preventing... In the event of excessive bouncing of the arresting mechanism 50, resulting in failure to attach the net, the shock-absorbing structure 32 absorbs the vibration caused by the tension applied by the arresting rope 300 when the arresting mechanism 50 swings upward after attaching the net. At the same time, due to the setting of the shock-absorbing structure 32, the height of the arresting mechanism 50 when attaching the net is limited, so that when the UAV arresting device 100 of this application is applied to the UAV 200 with a rear propeller 240, the net attachment height of the arresting mechanism 50 and the arresting rope 300 is always controlled below the rotating end face of the rear propeller, ensuring the stability and safety of the arresting and recovery of the rear propeller-type UAV 200.

[0027] This embodiment shows a schematic diagram of the drone blocking device 100 applied to the drone 200 and in a net-attached state. The fuselage 210 is also equipped with a front landing gear 220 and a rear landing gear 230.

[0028] Please see Figures 1 to 8 The above is a schematic diagram of the structure of the first mounting base 10 and the second mounting base 20 in an embodiment of the present invention. The first mounting base 10 includes a first base body 11 and a first connecting ear 12 and a third connecting ear 13 disposed on the first base body 11. The first connecting ear 12 is rotatably disposed at one end of the telescopic drive mechanism 40, and the third connecting ear 13 is rotatably disposed at the blocking mechanism 50. The second mounting base 20 includes a second base body 21 and a second connecting ear 22 disposed on the second base body 21. The second connecting ear 22 is rotatably disposed at the other end of the telescopic drive mechanism 40.

[0029] When the barrier mechanism 50 is attached to the net, the first seat 11 located on the front side is the main force-bearing point and needs to withstand the shear force and torsion generated by the tension of the barrier rope 300. The second seat 21 is only subjected to the load of the tension of the barrier mechanism 50. Therefore, the structural strength of the first seat 11 needs to be greater than that of the second seat 21.

[0030] Specifically, the cross-section of the first seat body 11 in the length direction of this embodiment is set in a "hui" character shape, and the second seat body 21 is set in a plate shape. Thus, the first seat body 11 with a cross-section in the shape of a "hui" character has greater structural strength, has the effects of anti-torsion and anti-bending, can effectively disperse and bear impact loads on the premise of light weight, and avoid the deformation or fracture of the first seat body 11; since the second seat body 21 is less stressed during the blocking process, the flat plate structure can reduce material use and lower the overall weight.

[0031] Among them, please refer to Figures 1 to 3 , in order to achieve the telescopic driving effect of the telescopic driving mechanism 40, the first connecting ear 12 is inclined relative to the first seat body 11 and inclined towards the direction of the second mounting seat 20. Thus, when the telescopic driving mechanism 40 is installed on the first connecting ear 12, it can be connected to the middle area of the connecting member 31 to achieve the rapid transmission of the driving force. Further, the second connecting ear 22 is vertically installed at the bottom of the second seat body 21.

[0032] Specifically, the telescopic driving mechanism 40 in this embodiment is a driving electric cylinder. In other embodiments, it can also be set as a driving mechanism such as an electromagnet with a movable telescopic shaft.

[0033] Please refer to Figure 1 、 Figure 2 And Figure 7 , when setting the telescopic driving mechanism 40, since the first mounting seat 10 not only provides a hinged connection for the telescopic driving mechanism 40 but also for the blocking mechanism 50, in order to avoid interference between components, the hinge of the telescopic driving mechanism 40 and the first mounting seat 10 deviates from the center of the first mounting seat 10, and the hinge point of the telescopic driving mechanism 40 and the connecting member 31 is located on the side of the connecting member 31, that is, the first connecting ear 12 deviates from the center of the first seat body 11, and it can deviate to the left side of the first seat body 11 or to the right side of the first seat body 11. Thus, the telescopic driving mechanism 40 can be connected to the side of the connecting member 31 to drive the rotation of the connecting member 31 relative to the second connecting ear 22; it also avoids the situation where when the driving blocking mechanism 50 is in the retracted state, due to the rotational retraction of the shock absorption structure 32, it collides with the telescopic driving mechanism 40.

[0034] Please refer to Figures 1 to 10This is a schematic diagram of the structure of the blocking mechanism 50 according to an embodiment of the present invention. The blocking mechanism 50 includes a connecting arm 51, a blocking rod 52, and a blocking hook 53 disposed on the blocking rod 52. The connecting arm 51 has a first end and a second end opposite to each other. The first end and the middle area of ​​the connecting arm 51 are respectively hinged to the first mounting base 10 and the shock absorption structure 32. The end of the blocking rod 52 away from the blocking hook 53 and the second end are hinged so that it can swing relative to the connecting arm 51 in the left and right direction. In this way, after the blocking hook 53 is attached to the net, the blocking rod 52 is subjected to a swinging force in the left and right direction. By setting the blocking rod 52 to be rotated relative to the connecting arm 51, when the blocking rod 52 is subjected to a lateral force, the stress concentration caused by the structure composed of the connecting arm 51 and the blocking rod 52 being a rigid structure is avoided. This avoids the situation where the blocking rod 52 is deformed or broken when subjected to tensile force in the left and right direction, so that the entire blocking device can more flexibly deal with various net entry attitudes of the UAV 200 and avoid blocking failure caused by hard impact.

[0035] Specifically, please refer to Figure 1 , Figure 2 , Figure 7 , Figure 10 as well as Figure 12 This is a schematic diagram of the structure of the adapter arm 51 according to an embodiment of the present invention. The adapter arm 51 includes two separate arms 511 arranged at an acute angle and a cross arm 512 connected between the two arms 511. The cross arm 512 is hinged to the buffer stop mechanism 30. The included angle between the two arms 511 is an acute angle. Specifically, the two ends of the two arms 511 that connect to the first mounting base 10 are located on both sides of the hinge point between the telescopic drive mechanism 40 and the first mounting base 10. The other ends of the two arms 511 are connected to the stop bar 52. Thus, by setting the adapter arm 51 to include two arms 511, the two arms 511 form a symmetrical frame structure, compared to a single connecting arm. The extension arm design significantly improves the torsional and bending resistance of the entire mechanism. When subjected to blocking impact, the two arms can distribute the load more evenly, avoiding stress concentration at a single point and effectively preventing deformation or breakage. It can also resist deformation caused by lateral loads. At the same time, the hinge points of the two arms 511 and the first mounting base 10 are set on both sides of the hinge point of the telescopic drive mechanism 40, making reasonable use of the installation space and achieving a compact layout between components. The two arms 511 are set at an acute angle, that is, the structure formed by the two arms 511 and the blocking rod 52 is equivalent to a Y-shaped structure. The distance between the two arms 511 is small, which is suitable for the size of the UAV.

[0036] Since the blocking mechanism 50 is hinged to the first mounting base 10, that is, the two branch arms 511 are respectively hinged to the first mounting base 10, the first mounting base 10 includes two third connecting ears 13, which are located on both sides of the first connecting ear 12, and one branch arm 511 and one third connecting ear 13 are hinged to each other.

[0037] Furthermore, in this embodiment, the first mounting base 10 and the second mounting base 20 are equivalent to two points on one side of a triangle, the telescopic drive mechanism 40 is one side of the triangle, and the connecting member 31 is another side of the triangle. That is, the two mounting bases, the telescopic drive mechanism 40, and the connecting member 31 form a stable triangular structure. Because the telescopic drive mechanism 40 drives the rotation of the connecting member 31, it drives the movement of the lower blocking mechanism 50. During the netting process, the load on the blocking mechanism 50 is transmitted to the triangular structure through the adapter arm 51. This triangular structure can decompose complex impact loads into axial forces along the telescopic drive mechanism 40 and the connecting member 31, allowing the load to be distributed more evenly on the first mounting base 10 and the second mounting base 20, reducing local stress concentration, and improving the overall deformation resistance.

[0038] Furthermore, when the arresting mechanism 50 is in the lowered state and before the net is attached, the shock-absorbing structure 32 is in the extended state. The telescopic drive mechanism 40, the shock-absorbing structure 32, and the entire adapter arm 51 form a triangular structure. At this time, the shock-absorbing structure 32 can provide a stable downward pressing force to the arresting rod 52, allowing the arresting rod 52 to contact the ground, ensuring the reliability of the arresting action, and preventing it from swinging up and down significantly due to aircraft vibration or external air resistance, thereby reducing the probability of the UAV 200 failing to land and attach the net. When the arresting hook 53 attaches the net, due to the geometric invariance of the triangle, it can effectively prevent the mechanism from deforming under the action of the arresting impact load. At the same time, the shock-absorbing structure 32 can contract to absorb the vibration, thereby reducing the vibration of the entire device and reducing the impact load.

[0039] It should be noted that, in order to ensure the connection strength between various points, such as the connection strength between the first connecting ear 12 and the third connecting ear 13 and the first seat 11, the connection strength between the second connecting ear 22 and the second seat 21, and the connection strength between the cross arm 512 and the branch arm 511, steel sleeves are provided in the connection holes of each connection point to increase the connection strength of each connection point.

[0040] Please see Figures 10 to 15In one embodiment of the present invention, in order to enable the blocking rod 52 to return to its original position after the blocking is completed so that the blocking rod 52 can be locked subsequently, the blocking mechanism 50 further includes a centering structure 55. The centering structure 55 is connected to the second end of the adapter arm 51 and is rotatably configured with the blocking rod 52. It is used to apply an elastic force to the blocking rod 52 when the blocking hook 53 is attached to the net and the blocking rod 52 is swayed in the left and right direction by an external force. When the external force disappears, the blocking rod 52 is reset under the drive of the elastic force of the centering structure 55. In this way, by setting the centering structure 55 and connecting it to the blocking rod 52, the blocking rod 52 can be pulled back to the middle position after the blocking is completed, so that the blocking rod 52 can correspond to the setting position of the blocking hook 72, realize the reliable locking of the blocking hook 72, and realize the automation of the locking and unlocking of the blocking mechanism 50.

[0041] Specifically, please refer to Figures 11 to 15 This is a schematic diagram of the centering structure 55 according to an embodiment of the present invention. The centering structure 55 includes a mounting frame 551, a cam 552, a first elastic element 553, and a guide shaft 554. The mounting frame 551 is mounted on the adapter arm 51 and is rotatably mounted on the blocking rod 52. One end of the mounting frame 551 facing the blocking rod 52 is provided with a wave guide surface 5511, which has wave crests 5512 and wave troughs 5513. The cam 552 is connected to one end of the guide shaft 554 and is slidably mounted with the wave guide surface 5511, for moving from the wave trough 5513 position towards the wave crests 5512 on both sides. The guide shaft 554 is slidably mounted relative to the blocking rod 52. The two ends of the first elastic element 553 act on the guide shaft 554 and the blocking rod 52 respectively, for moving towards the convex... The wheel 552 applies an elastic force to move the cam 552 from the crest 5512 position back to the trough 5513 position. In this way, through the setting of the first elastic element 553, the cam 552 and the wave guide surface 5511 can always maintain a meshing state. When the blocking rod 52 is not attached to the net, the cam 552 is in the trough 5513 position. When the blocking rod 52 is attached to the net, it is subjected to tension and vibration. When the blocking rod 52 swings towards the crests 5512 on both sides, it compresses the first elastic element 553. At this time, the first elastic element 553 stores energy. After the net is attached, under the action of the elastic force of the first elastic element 553, an elastic force is applied to the guide shaft 554, thereby driving the cam 552 to move from the crest 5512 position to the trough 5513 position, and the blocking rod 52 returns to its original position.

[0042] In another embodiment, the centering structure 55 may be configured to include a mounting bracket 551 and a torsion spring. The main body of the torsion spring is sleeved on the barrier rod 52, and the two torsion arms of the torsion spring respectively abut against the two sides of the mounting bracket 51 in the left-right direction. The torsion spring deforms to generate elastic force. After the netting is installed, the torsion arms apply elastic force to the barrier rod 52 to drive the barrier rod 52 back to its original position.

[0043] Alternatively, in another embodiment, the centering structure 55 may include two third elastic members, which are located on opposite sides of the swing direction of the blocking rod 52. One end of each third elastic member is connected to the mounting bracket 551, and the other end is connected to the blocking rod 52. When the blocking rod 52 swings to the left or right, it can compress the third elastic member, thereby enabling the third elastic member to apply an elastic force to the blocking rod 52 to drive the blocking rod 52 to reset.

[0044] Furthermore, to prevent the barrier arm 52 from swinging excessively in the left and right directions after the net is hung, the barrier mechanism 50 of this embodiment also includes a limiting structure 54. The limiting structure 54 is connected to the adapter arm 51, specifically to the mounting bracket 551, and is used to limit the swing angle of the barrier arm 52 in the left and right directions. Thus, by setting the limiting structure 54, the swing of the barrier arm 52 in the left and right directions can be limited to a certain range, avoiding excessive swing of the barrier arm 52 and causing barrier failure. At the same time, by setting the limiting structure 54, the force on the adapter arm 51 and the hinge point can be kept within a predetermined range, avoiding deformation or even breakage of the hinge point pin due to excessive deflection.

[0045] Specifically, the limiting structure 54 in this embodiment includes two opposing limiting blocks 541, with a limiting block 541 on each side of the extension direction of the waveform guide surface 5511. The two limiting blocks 541 on both sides of the mounting frame 551 in this embodiment are connected to both sides of the mounting frame 551, limiting the range of rotation of the barrier rod 52 relative to the mounting frame 551 to within 40° (i.e., the angle of swing to the left is within 20°, and the angle of swing to the right is also within 20°). This prevents the barrier rod 52 from rotating too much. If the swing angle is too large, the barrier hook 53 will deviate from the ideal posture, resulting in failure to successfully attach the net or detach, thus reducing the success rate of the interception.

[0046] Please see Figures 13 to 15 To facilitate the installation of the guide shaft 554, the blocking rod 52 is provided with an installation cavity 521. The centering structure 55 also includes a guide sleeve 555, which is connected to the blocking rod 52 and is at least partially located in the installation cavity 521. The guide sleeve 555 is provided with a receiving cavity 5551, and a first elastic element 553 is located in the receiving cavity 5551. The guide shaft 554 is slidably located in the receiving cavity 5551. Thus, by providing the guide sleeve 555, the sliding of the guide shaft 554 can be restricted, thereby achieving the function of limiting the sliding of the guide shaft 554.

[0047] Furthermore, to prevent the cam 552 from flipping while sliding on the wave guide surface 5511, the guide shaft 554 passes through the end of the guide sleeve 555 away from the adapter arm 51. The guide sleeve 555 is provided with a limiting hole 5552. The guide shaft 554 is slidably disposed in the limiting hole 5552. The cross-section of the guide shaft 554 in the length direction and the axial cross-section of the limiting hole 5552 are non-circular. In this way, by setting the cross-sections of the limiting hole 5552 and the guide shaft 554 to be non-circular, the rotation of the guide shaft 554 when sliding in the limiting hole 5552 is prevented. For example, the cross-sections of the limiting hole 5552 and the guide shaft 554 can be set to triangular, square or pentagonal cross-sectional shapes.

[0048] Specifically, in this embodiment, the guide shaft 554 is provided with a limiting plane 5541, that is, the end of the guide shaft 554 is cut off to make the cross-section of the guide shaft 554 non-circular, so as to avoid rotation in the guide sleeve 555.

[0049] Please see Figures 13 to 15 The diagram below shows the structure of the guide sleeve 555 according to an embodiment of the present invention. To facilitate the connection between the guide sleeve 555 and the blocking rod 52, the guide sleeve 555 includes a connecting part 5553 and a guiding part 5554. The guiding part 5554 is located in the mounting cavity 521 of the blocking rod 52 and is provided with the aforementioned limiting hole 5552. The connecting part 5553 is located at the end of the guiding part 5554 and is provided at the end of the blocking rod 52, and is fixed to the end of the blocking rod 52 by bolts. Thus, the guide sleeve 555 and the blocking rod 52 are easily connected by the two-part guide sleeve 555.

[0050] Please see Figure 16 The shock-absorbing structure 32 of this embodiment includes a hydraulic shock absorber 321 and a second elastic member 322 sleeved outside the hydraulic shock absorber 321. Thus, by setting the hydraulic shock absorber 321, when the arresting rod 52 compresses the second elastic member 322 during the net-hanging process, the oil in the hydraulic shock absorber 321 absorbs the vibration and can absorb the instantaneous impact on the arresting rod 52 during the net-hanging process. This can significantly reduce the impact value of the arresting hook 53 at the moment of net-hanging, thereby reducing the impact load on the aircraft fuselage 210 and the arresting mechanism 50. At the same time, the second elastic member 322 can apply pressure to the arresting rod 52 so that the arresting hook 53 is always hung on the arresting rope 300.

[0051] In this embodiment, the blocking hook 53 is horseshoe-shaped and detachably connected to the blocking rod 52, so that the blocking hook 53 can be disassembled and replaced after repeated use and wear.

[0052] Since the hydraulic shock absorber 321 is subjected to both axial force and deflection force at a certain angle during use, at least one end of the hydraulic shock absorber 321 is provided with a spherical bearing in order to ensure efficient operation and structural safety. Specifically, the point where the hydraulic shock absorber 321 and the cross arm 512 are connected is provided with a spherical bearing. By providing a spherical bearing below the hydraulic shock absorber 321, the hydraulic shock absorber 321 can have a degree of freedom of movement to compensate for the deflection force on the hydraulic shock absorber 321, avoid the hydraulic shock absorber 321 from generating additional bending moment and shear force due to forced bending, thereby ensuring the service life of the hydraulic shock absorber 321.

[0053] It should be noted that the drone arresting device 100 of this embodiment can be applied to a drone 200 with a rear rotor. Through the setting of the connector 31 and the shock absorption structure 32, when the arresting rod 52 is lowered, there is a downward pressing force on the arresting rod 52, so that the arresting rod 52 can always be kept at a certain height, thereby avoiding the interference between the arresting rod 52 and the rear propeller 240.

[0054] Please see Figures 1 to 9 During flight, to facilitate locking the arresting mechanism 50, the drone arresting device 100 in this embodiment also includes a lifting ring 60 and a locking mechanism 70. The lifting ring 60 is mounted on the arresting rod 52, and the locking mechanism 70 is mounted on the fuselage 210 and located behind the second mounting base 20. Please refer to [link to relevant documentation]. Figure 9 The locking mechanism 70 includes an electric actuator 71 and a locking hook 72. The locking hook 72 is connected to the piston shaft of the electric actuator 71, and the front end of the piston rod is connected to the locking hook 72 via a pin. When the blocking mechanism 50 is retracted to its final position, the electric actuator 71 drives the piston rod to extend and retract, using the locking hook 72 to lock the lifting ring 60 on the blocking hook 53.

[0055] The operation of the aforementioned blocking mechanism 50 is as follows: (1) Please refer to Figure 7 Figure 8 This is a schematic diagram of the blocking mechanism 50 in the locked state. When it is necessary to hang the net for blocking, the locking mechanism 70 unlocks the lifting ring 60; (2) The telescopic drive mechanism 40 retracts, causing the lower end of the connecting piece 31 to swing clockwise, and the blocking mechanism 50 moves clockwise, such as... Figure 8 As shown, until the connector 31 and the damping structure 32 are collinear, as... Figures 1 to 3 As shown, the second elastic element 322 applies a downward pressing force to the barrier bar 52 so that the barrier hook 53 can contact the ground; (3) After the blocking hook 53 is attached to the net, the blocking hook 53 swings rapidly in a counterclockwise direction under the traction of the blocking rope 300, such as Figure 4 As shown, both the hydraulic shock absorber 321 and the second elastic element 322 are compressed until the hydraulic shock absorber 321 is compressed to the stop position. At this point, the continued upward swing of the arresting hook 53 is limited, preventing interference between the arresting rope 300 and the rear rotor. Figure 5 As shown; (4) After the blocking is completed, the blocking bar 52 and the blocking hook 53 move clockwise and return to the initial lowering position under their own weight and the combined action of the hydraulic shock absorber 321; (5) When it is necessary to retract the barrier bar 52, the barrier hook 72 unlocks, the piston shaft of the telescopic drive mechanism 40 extends, and pushes the connecting piece 31 to rotate counterclockwise, as shown. Figure 6 As shown, until the connector 31 is rotated to be almost parallel to the fuselage 210, as Figure 7 and Figure 8 As shown; during the counterclockwise rotation of the connecting piece 31, the buffer stop mechanism 30 rotates and moves upwards simultaneously. The movement of the buffer stop mechanism 30 causes the blocking rod 52 and the blocking hook 53 to rotate counterclockwise to a position close to the machine body 210. After the blocking hook 72 is locked, it hooks the lifting ring 60 on the blocking rod 52, completing the retrieval of the blocking mechanism 50.

[0056] The aforementioned UAV 200 blocking mechanism 50 has the following beneficial effects: (1) The arresting mechanism 50 is installed outside the fuselage 210. The arresting hook 53 has a low net hanging point. At the same time, under the pressure of the buffer stop mechanism 30, the net hanging height of the arresting rope 300 can always be controlled to be lower than the rear propeller 240. Thus, the arresting mechanism 50 of this application can be applied to the net hanging of a UAV 200 or an aircraft with a rear propeller. (2) When the UAV 200 is flying, the arresting mechanism 50 can be in the recovery state, that is, at this time the arresting mechanism 50 is at the bottom of the UAV 200 and parallel to the fuselage 210, the arresting hook 72 stably locks the arresting rod 52 of the arresting mechanism 50, thereby reducing the aerodynamic drag of the UAV's windward surface and enhancing the maneuverability of the UAV 200. (3) When the UAV 200 is about to land, the buffer stop mechanism 30 presses the arresting hook 53 stably on the ground so that the arresting hook 53 hooks the arresting rope 300 installed on the ground, thereby ensuring the accuracy of the net hanging and completing the arresting landing of the UAV; at the same time, the hydraulic shock absorber 321 in the buffer stop mechanism 30 can absorb the rebound impact when the arresting hook 53 touches the ground, and can also absorb the upward swing impact of the arresting rod 52 after the net is hung, preventing the arresting hook 53 from being misaligned with the ground arresting rope 300 due to swinging, resulting in the failure of the arresting. (4) By setting the blocking mechanism 50 to include a rotatable adapter arm 51 and a blocking rod 52, when the blocking hook 53 is attached to the net, the blocking rod 52 can rotate relative to the adapter arm 51 when it is under tension, thus avoiding failure to attach the net. (5) By setting a centering structure 55 between the adapter arm 51 and the arresting bar 52, the arresting mechanism 50 of the UAV 200 has lateral tolerance during the arrested landing. When the UAV 200 lands in a yaw condition, a large-angle deviation in the net will not damage the structure of the fuselage 210; after the net is attached, the arresting bar 52 can be driven back to its original position by the centering structure 55, so as to facilitate the accuracy of the subsequent recovery action; (6) By setting the cross-section of the guide shaft 554 and the limiting hole 5552 in the centering structure 55 to be non-circular, the guide shaft 554 is prevented from rotating in the limiting hole 5552 when the cam 552 rolls on the wave guide surface 5511. (7) By setting the adapter arm 51 to include two split arms 511 with an acute angle, the two split arms 511 form a symmetrical frame structure. Compared with the single connecting arm, the torsional and bending resistance of the entire blocking mechanism 50 can be significantly improved. When subjected to blocking impact force, the two arms can distribute the load more evenly, avoid single-point stress concentration, and effectively prevent deformation or breakage.

[0057] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A drone interception device, characterized in that, include: The first mounting bracket is attached to the front side of the drone's fuselage; The second mounting base is separated from the first mounting base and is connected to the rear side of the body; A buffer stop mechanism includes a connecting member and a shock-absorbing structure that are hinged together, wherein one end of the connecting member is hinged to the second mounting base; A telescopic drive mechanism, wherein both ends of the telescopic drive mechanism are respectively hinged to the middle part of the connector and the first mounting base; The blocking mechanism is hinged at one end to the first mounting base and hinged in the middle to the shock-absorbing structure. The shock-absorbing structure can apply a pressing force to the ground to the barrier mechanism before the net is hung, and can retract after the net is hung to absorb the vibration experienced by the barrier mechanism during the hanging process.

2. The UAV interception device according to claim 1, characterized in that, The blocking mechanism includes a connecting arm, a blocking rod, and a blocking hook disposed on the blocking rod. The connecting arm has a first end and a second end opposite to each other. The first end and the middle region of the connecting arm are respectively hinged to the first mounting base and the shock-absorbing structure. The end of the blocking rod away from the blocking hook is hinged to the second end so that it can swing relative to the connecting arm in the left-right direction.

3. The UAV interception device according to claim 2, characterized in that, The blocking mechanism also includes a centering structure, which is connected to the second end and rotatably configured with the blocking rod. When the blocking hook is attached to the net and the blocking rod is subjected to an external force and swings in the left-right direction, the centering structure applies an elastic force to the blocking rod so that when the external force disappears, the blocking rod is reset under the drive of the elastic force of the centering structure.

4. The UAV interception device according to claim 3, characterized in that, The centering structure includes a mounting bracket, a cam, a first elastic element, and a guide shaft; The mounting bracket is mounted on the adapter arm and is rotatably mounted on the barrier arm. The end of the mounting bracket facing the barrier arm is provided with a wave-shaped guide surface, which has wave crests and troughs. The cam is connected to one end of the guide shaft and is slidably disposed with the waveform guide surface, for moving from the trough position to the crests on both sides; The guide shaft is slidably disposed relative to the barrier bar; The two ends of the first elastic element act on the guide shaft and the blocking rod respectively, and are used to apply an elastic force to the guide shaft.

5. The UAV interception device according to claim 4, characterized in that, The barrier bar has an installation cavity, and the centering structure also includes a guide sleeve. The guide sleeve is connected to the barrier bar and is at least partially located in the installation cavity. The guide sleeve has a receiving cavity, and the first elastic element is located in the receiving cavity. Its two ends act on the guide shaft and the guide sleeve, respectively. The guide shaft is slidably located in the receiving cavity.

6. The UAV interception device according to claim 5, characterized in that, The guide shaft passes through the end of the guide sleeve away from the adapter arm. The guide sleeve is provided with a limiting hole. The guide shaft is slidably disposed in the limiting hole. The cross-section of the guide shaft in the length direction and the axial cross-section of the limiting hole are non-circular surfaces.

7. The UAV interception device according to any one of claims 2-6, characterized in that, The blocking mechanism also includes a limiting structure connected to the adapter arm, which is used to limit the swing angle of the blocking bar in the left and right directions.

8. The UAV interception device according to any one of claims 2-6, characterized in that, The transfer arm includes two sub - arms that are separated and arranged at an acute angle, and a cross - arm connected between the two sub - arms. The cross - arm is hingedly connected to the buffer and stop mechanism.

9. The unmanned aerial vehicle arresting device according to any one of claims 1 - 6, wherein The hinge point of the telescopic drive mechanism and the first mounting seat deviates from the center of the first mounting seat, and the hinge point of the telescopic drive mechanism and the connecting member is located on the side of the connecting member.

10. The unmanned aerial vehicle (UAV) interception device according to any one of claims 1-6, characterized in that, The first mounting seat includes a first seat body, a first connecting ear and a third connecting ear provided on the first seat body. One end of the telescopic drive mechanism is rotatably arranged on the first connecting ear, and the arresting mechanism is rotatably arranged on the third connecting ear. The cross - section of the first seat body in the length direction is in a "hui" shape.

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