Net collision recovery device for small and medium sized fixed-wing unmanned aerial vehicles

Abstract

The invention discloses a net collision recovery device for small and medium-sized fixed-wing unmanned aerial vehicles, and relates to the technical field of unmanned aerial vehicle recovery. The device comprises a telescopic column, an energy dissipater, a base, an intercepting net and a connecting piece. The intercepting net is used for generating space interference with the unmanned aerial vehicle and transmitting an impact load; and the rope in the connecting piece transmits the impact force to the energy dissipater of which the end part is connected to the base. The friction type energy dissipater is provided with the first-stage sliding block and the second-stage sliding block, and the working tension and the energy dissipation capacity can be adjusted in a self-adaptive mode according to different kinds of impact energy. The modularized telescopic column is provided with hanging rings for the rope to slide or be fixed at different height positions, and the modularized telescopic column can be contracted to the minimum size during transportation. The modularized base is provided with a sleeve connected with the bottom of the telescopic column in a matched mode and a base hanging ring capable of being connected with the quick-assembly lock catch. The device disclosed by the invention has the advantages of foldable modularization, energy absorption self-adaptive quantitative control, small impact damage of a machine body and quick system resetting, and is convenient to quickly deploy in a narrow and complex space in a city.

Description

TECHNICAL FIELD

[0001] The present application relates to unmanned aerial vehicle recovery technology, in particular to a small and medium-sized fixed-wing unmanned aerial vehicle net recovery device suitable for narrow and complex urban environment. BACKGROUND

[0002] With the rapid development of low-altitude economy, fixed-wing unmanned aerial vehicles are increasingly widely used in fields such as logistics distribution, urban patrol, and emergency response. However, the urban environment is limited in space, often lacking the runway or open space required for traditional unmanned aerial vehicle landing, which poses a severe challenge to the precise and safe recovery of fixed-wing unmanned aerial vehicles. Net recovery technology, as an effective solution, has attracted attention due to its low site requirements.

[0003] The existing fixed-wing unmanned aerial vehicle net recovery device usually has low modularization, is not flexible enough to deploy, and is difficult to adapt to the changing narrow space in the city. More importantly, many existing devices lack systematic buffer and energy absorption design, or their energy absorption mechanism is relatively single, and cannot effectively adapt to the huge impact energy brought by different models, different weights, and different landing speeds of unmanned aerial vehicles. This leads to excessive impact force during the recovery process, which easily causes irreversible damage to the unmanned aerial vehicle body structure and the precision instruments and equipment carried inside, increasing the operation and maintenance cost. In addition, when performing continuous recovery tasks for multiple unmanned aerial vehicles, the existing device is often tedious and time-consuming to reset, making it difficult to meet the needs of rapid and continuous operation.

[0004] Therefore, there is an urgent need in the art for a small and medium-sized fixed-wing unmanned aerial vehicle net recovery device that is highly modularized, easy to quickly deploy and transfer, has self-adaptive energy absorption capacity to effectively protect the unmanned aerial vehicle, and can achieve rapid system reset, in order to overcome the above-mentioned deficiencies of the prior art and better serve low-altitude economic activities in urban environments. SUMMARY

[0005] In view of the above problems existing in the prior art, the present application aims to provide a small and medium-sized fixed-wing unmanned aerial vehicle net recovery device, which has the advantages of foldable modularization, energy absorption self-adaptive quantitative control, small impact damage to the body, and rapid system reset, and is particularly suitable for deployment in narrow urban spaces.

[0006] To solve the above technical problems, the technical solution proposed by the present application is: The present application provides a small and medium-sized fixed-wing unmanned aerial vehicle net recovery device, comprising: a telescopic column, an energy absorber, a base, a connecting component, and a net; The bottom of the telescopic column is connected with the base; The connecting component comprises a plurality of ropes, and part of the ropes connect the telescopic column and the base; Part of the rope is connected to the base after being connected to the energy absorber through the boundary of the interception net, for absorbing kinetic energy generated by the unmanned aerial vehicle hitting the interception net.

[0007] Further, the telescopic column comprises a telescopic column body and a lifting ring; the telescopic column body is composed of a plurality of column bodies with different cross-sectional sizes nested; the lifting ring is arranged at different height positions of the telescopic column body.

[0008] Further, the telescopic column body is provided with a bolt hole on the side surface where the lifting ring is not arranged, for screwing in a stop bolt to fix the relative height between the segments of the telescopic column body.

[0009] Further, the energy absorber comprises a friction plate, a primary sliding block, a secondary sliding block, a pre-tightening bolt, an energy absorber rigging, an energy absorber lifting ring, a stop block and a rubber pad; The middle part of the friction plate is provided with an axial groove; The primary sliding block and the secondary sliding block are both composed of a plate member clamped on both sides of the friction plate and the pre-tightening bolt penetrating through the plate member, and the plate member on the side of the groove is provided with a protrusion matched with the groove and embedded in the groove; The primary sliding block is arranged at a position close to the energy absorber lifting ring; The secondary sliding block is arranged at the middle part of the friction plate; The rubber pad is arranged on the side of the plate member of the secondary sliding block close to one side of the primary sliding block; The stop block is arranged at one end of the friction plate away from the energy absorber lifting ring; The energy absorber rigging is arranged around the friction plate and can freely slide through the secondary sliding block, and both ends of the energy absorber rigging are connected to the pre-tightening bolts on both sides of the primary sliding block.

[0010] Further, the primary working tension of the energy absorber F 1, the secondary working tension F 2, the primary energy absorption reserve E 1, the secondary energy absorption reserve E 2 and the total energy absorption reserve of a single energy absorber E total The following formula is used for calculation: Primary working tension: F 1=4 T 1 μ 1 Secondary working tension: F 2=4( T 1+ T 2) μ 2 Primary energy absorption reserve: E 1=4 T1 μ 1 l 1 Secondary energy storage: E 2=4( T 1+ T 2) μ 2 l 2 Total energy reserves: E total =4 T 1 μ 1 l 1+4( T 1+ T 2) μ 2 l 2 in, T 1 represents the preload force of a single preload bolt in the first-stage slider. T 2 represents the preload force of a single preload bolt in the secondary slider. l 1 represents the distance from the first-level slider to the second-level slider. l 2 represents the distance from the secondary slider to the stop, and μ1 represents the primary stroke. l The coefficient of friction between the slider and the friction plate within a range of 1, where μ2 is the second-order stroke. l The coefficient of friction between the slider and the friction plate within a range of 2; The sum of the total energy reserves of all the aforementioned energy consumers is greater than or equal to the maximum kinetic energy of the drone at the moment of impact with the net.

[0011] Furthermore, the rope diameter of the energy-consuming device rigging is 2mm smaller than the thickness of the friction plate.

[0012] Furthermore, the base includes a base plate, a front base lifting ring, a side base lifting ring, and a sleeve; The sleeve is disposed on the base plate and is used to connect to the bottom of the telescopic column; The front base lifting ring and the side base lifting ring are mounted on the base plate and are used to connect to the telescopic column or the energy dissipator through the connecting component.

[0013] Furthermore, the base plate is in the shape of a quarter circle, and the sleeve is positioned near the center of the quarter circle.

[0014] Furthermore, the front base lifting ring is connected to the rope via a buckle, and the rope is further connected to the lifting ring at the top of the telescopic column; The side base lifting ring is connected by the buckle and the three ropes: The other end of the first rope is connected to the sling at the top of the telescopic column; The energy dissipator is connected to the second and third ropes, which pass through the hanging rings at the top and middle of the telescopic column in sequence, and finally connect to the upper and lower boundaries of the interception net.

[0015] Furthermore, the base plate has bolt holes near the front base lifting ring and the side base lifting ring for fixing the base to the ground.

[0016] Furthermore, one side of the interception net is the impact side facing the drone collision, and the other side is the buffer deformation side; the impact side corresponds to the side where the front base ring of the base is located.

[0017] Compared with the prior art, the present invention achieves the following beneficial technical effects: The beneficial effects of this invention are as follows: 1. Through modular telescopic columns, bases, and standardized connectors, the entire device can be quickly disassembled, folded, and transported, greatly improving deployment flexibility and efficiency, and adapting to narrow urban spaces. 2. Employing a friction energy dissipator with a primary and secondary slider structure and providing precise mechanical parameter calculation formulas, the preload can be adaptively adjusted according to the expected impact kinetic energy, achieving quantitative control of energy absorption capacity and ensuring appropriate buffering against impacts from drones of different sizes, minimizing damage to the aircraft. 3. The energy dissipator is cleverly designed, using rubber pads to mitigate internal collision impacts and quantitatively controllable preload bolts to achieve adjustable performance and rapid readjustment after reset, meeting the needs of continuous and rapid recovery operations. 4. The system structure is clear, the force transmission path is well-defined, and the reliability is high. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a partial structural schematic diagram of a small-to-medium-sized fixed-wing UAV net-collision recovery device according to the present invention; Figure 2 Assembly diagram of the right telescopic column portion of the present invention Figure 1 ; Figure 3 Assembly diagram of the left telescopic column part of the present invention Figure 2 ; Figure 4 This is a schematic diagram of the base of the present invention; Figure 5 This is a schematic diagram of the energy consumption device of the present invention; Figure 6This is a schematic diagram of the physical display mode of the energy consumer of the present invention; Figure 7 This is a schematic diagram of the telescopic column of the present invention; Figure 8 This is a schematic diagram of the overall structure of a small-to-medium-sized fixed-wing UAV net-collision recovery device according to the present invention; In the above figures, the same reference numerals are used to represent the same structures or components. The names of the structures or components corresponding to the reference numerals are as follows: 1-telescopic column, 2-energy consumer, 3-base, 4-connecting component, 5-interception net, 11-telescopic column body, 12-lifting ring, 21-friction plate, 22-first-stage slider, 23-second-stage slider, 24-pre-tightening bolt, 25-energy consumer rigging, 26-energy consumer lifting ring, 27-stop block, 28-rubber pad block, 31-base plate, 32-front base lifting ring, 33-side base lifting ring, 34-sleeve, 41-rope, 42-locking buckle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0021] See Figure 1 and Figure 8 The small-to-medium-sized fixed-wing UAV impact-and-recovery device of this application includes a telescopic column 1, an energy dissipator 2, a base 3, a connecting component 4, and an intercepting net 5. The bottom of the telescopic column 1 is connected to the base 3, providing stable support for the entire device. The connecting component 4 includes multiple ropes 41, which connect the various components. Specifically, some ropes 41 connect the telescopic column 1 and the base 3 together, thereby enhancing the overall structural stability of the device; other ropes 41 first pass through the boundary of the intercepting net 5, then connect to the energy dissipator 2, and finally connect to the base 3. When the UAV impacts the intercepting net 5, the energy dissipator 2 can absorb the kinetic energy generated by the impact through its own structural characteristics, thus achieving effective recovery of the UAV.

[0022] The telescopic column 1 includes a telescopic column body 11 and a lifting ring 12. The telescopic column body 11 is composed of multiple nested column sections with different cross-sectional dimensions. This nested structure allows the length of the telescopic column body 11 to be adjusted according to actual needs. The lifting ring 12 is set at different height positions of the telescopic column body 11 and is used to connect components such as the rope 41.

[0023] Bolt holes are provided on the side of the telescopic column 11 where the lifting ring 12 is not installed. After the telescopic column 11 is adjusted to a suitable height, the stop bolt can be screwed into the bolt hole to fix the relative height between the sections of the telescopic column 11, so as to ensure that the telescopic column 1 maintains a stable length during operation.

[0024] The energy consuming device 2 includes a friction plate 21, a primary slider 22, a secondary slider 23, a preload bolt 24, an energy consuming device rigging 25, an energy consuming device lifting ring 26, a stop block 27, and a rubber pad 28. The friction plate 21 has an axial groove in its center. Both the primary slider 22 and the secondary slider 23 are composed of plates clamped on both sides of the friction plate 21 and preload bolts 24 penetrating the plates. The plates on the groove side have protrusions that fit the groove and are embedded within it. The primary slider 22 is positioned near the energy consuming device lifting ring 26, and the secondary slider 23 is positioned in the center of the friction plate 21. The rubber pad 28 is positioned on the side of the secondary slider 23 plate near the primary slider 22. The stop block 27 is positioned at the end of the friction plate 21 away from the energy consuming device lifting ring 26. The energy consuming device rigging 25 surrounds the friction plate 21 and can slide freely through the secondary slider 23, with its two ends connected to the preload bolts 24 on both sides of the primary slider 22.

[0025] The first-level working pull force, second-level working pull force, first-level energy consumption reserve, second-level energy consumption reserve, and total energy consumption reserve of a single energy consumer 2 are all calculated in a corresponding way, and the sum of the total energy consumption reserves of all energy consumers 2 must be greater than or equal to the maximum kinetic energy of the UAV at the moment of collision with the net.

[0026] The diameter of the energy dissipator rigging 25 is 2mm smaller than the thickness of the friction plate 21. This size setting helps to ensure that the energy dissipator rigging 25 slides smoothly on the friction plate 21.

[0027] The base 3 includes a base plate 31, a front base lifting ring 32, a side base lifting ring 33, and a sleeve 34. The sleeve 34 is mounted on the base plate 31 and is used to connect to the bottom of the telescopic column 1. The front base lifting ring 32 and the side base lifting ring 33 are mounted on the base plate 31 and are used to connect to the telescopic column 1 or the energy consumer 2 through the connecting component 4.

[0028] The base plate 31 is shaped like a quarter circle, and the sleeve 34 is positioned near the center of the quarter circle. This shape and layout design helps the base 3 to better perform its supporting function.

[0029] The front base lifting ring 32 is connected to the rope 41 via the buckle 42, and the rope 41 is further connected to the lifting ring 12 at the top of the telescopic column 1; the side base lifting ring 33 is connected to three ropes 41 via the buckle 42, wherein the other end of the first rope 41 is connected to the lifting ring 12 at the top of the telescopic column 1, and the second and third ropes 41 are connected to the energy dissipator 2, and pass through the lifting rings 12 at the top and middle of the telescopic column 1 in sequence, and finally connect to the upper and lower boundaries of the interception net 5.

[0030] The base plate 31 has bolt holes near the front base lifting ring 32 and the side base lifting ring 33, which can be used to fix the base 3 to the ground, further enhancing the stability of the device.

[0031] One side of the interceptor net 5 is the impact side facing the drone impact, and the other side is the buffer deformation side. The impact side corresponds to the side where the front base ring 32 of the base 3 is located. This arrangement helps to more effectively absorb and buffer the impact of the drone.

[0032] The present application will be further described below with reference to specific embodiments: Please see Figures 2 to 6 This invention provides a small-to-medium-sized fixed-wing UAV net-collision recovery device, comprising: a telescopic column 1, an energy consumer 2, a base 3, a connecting component 4, and an interception net 5. The telescopic column 1 includes a telescopic column body 11 and a lifting ring 12; the energy consumer 2 includes a friction plate 21, a primary slider 22, a secondary slider 23, a pre-tightening bolt 24, an energy consumer rigging 25, an energy consumer lifting ring 26, a stop block 27, and a rubber pad 28; the base 3 includes a base plate 31, a front base lifting ring 32, a side base lifting ring 33, and a sleeve 34; the connecting component 4 includes a rope 41 and a locking buckle 42.

[0033] The telescopic column 1 is composed of three telescopic column bodies 11 with different cross-sectional dimensions nested together. At different height positions on the three sides of the telescopic column body 11, there are lifting rings 12 for ropes 41 to be connected or passed through. Bolt holes are provided on the non-lifting ring 12 side of the telescopic column body 11 to control the height of the telescopic column 1. The telescopic column 1 can be retracted to its minimum volume during transportation or storage, and can be stretched out when in use.

[0034] The friction plate 21 in the energy consumer 2 has an axial groove in the middle to guide the slider. The primary slider 22 and the secondary slider 23 are both composed of plates clamped on both sides of the friction plate 21 and preload bolts 24 penetrating the plates. The plate on the groove side has a protrusion that fits into the groove and is embedded in the groove. The preload bolts 24 should be tightened using a torque tool with quantitatively controllable torque. The applied preload force is determined according to the relationship between the tightening torque of the preload bolts 24 and the tension of the screw. The primary slider 22 is located at the end near the energy dissipator ring 26, and the secondary slider 23 is located in the middle of the friction plate 21. When impacted by a small fixed-wing UAV within a certain kinetic energy range, energy is dissipated only through friction of the primary slider 22. When impacted by a medium-sized fixed-wing UAV within a certain kinetic energy range, the primary slider 22 and the secondary slider 23 work together to dissipate energy after colliding. At the same time, a rubber pad 28 is provided on the side of the secondary slider 23 near the primary slider 22 to reduce the instantaneous pulse effect generated when the primary slider 22 and the secondary slider 23 collide. A stop block 27 is provided on the side of the friction plate 21 without the energy dissipator ring 26 to limit the end of the slider. Both ends of the energy dissipator rigging 25 are connected to the pre-tightening bolts 24 of the primary slider 22. The rope diameter should preferably be about 2 mm less than the thickness of the friction plate 21.

[0035] This embodiment provides a method for calculating the working tension of the energy consumer 2 and the system's energy reserve (that is, determining the tension of the rope 41 and controlling the internal forces of the system). The preload of the two preload bolts 24 in the first-stage slider 22 is... T 1. The preload of the preload bolt 24 in the secondary slider 23 is: T 2. The preload is controlled by the torque applied when tightening the preload bolt 24. The distance between the first-stage slider 22 and the second-stage slider 23 is the first-stage stroke. l 1. Within this stroke range, the coefficient of friction between the primary slider 22 and the friction plate 21 is... μ 1. The distance from the secondary slider 23 to the stop 27 is the secondary stroke. l 2. Within this stroke range, the coefficient of friction between the slider and the friction plate 21 is... μ 2. The main control mechanical parameters of a single energy consumer 2 are: Level 1 working tensile strength: F 1=4 T 1 μ 1 Level 2 working tensile force: F 2=4( T 1+ T 2) μ 2 Level 1 energy reserve: E 1=4 T 1 μ 1 l 1 Secondary energy storage: E 2=4(T 1+ T 2) μ 2 l 2 Total energy reserves: E total =4 T 1 μ 1 l 1+4( T 1+ T 2) μ 2 l 2 Of which, total energy storage E total The total number of energy-consuming devices multiplied by 2 should not be less than the maximum kinetic energy of the drone at the moment of impact with the net.

[0036] The base plate 31 should preferably be a quarter circle, with the sleeve 34 located near the center. The internal dimension of the sleeve 34 should preferably be 1 mm larger than the external dimension of the bottom of the telescopic column 1. Figure 2 As shown, the front base lifting ring 32 is connected to a rope 41 via a buckle 42, and the other end of the rope 41 is connected to the lifting ring 12 on the top of the telescopic column 1, corresponding to the front base lifting ring 32, via the buckle 42; Figure 3 As shown, the side base lifting ring 33 is connected to three ropes 41 via a buckle 42. Of the three ropes 41, the other end of the first rope is connected to the lifting ring 12 on the top of the telescopic column 1, which corresponds to the side base lifting ring 33, via a buckle 42. The second and third ropes 41 are connected to the energy dissipator 2 and pass through the remaining lifting ring 12 at the top of the telescopic column 1 and the lifting ring 12 in the middle of the telescopic column 1, respectively. After passing through the lifting ring 12, the second and third ropes 41 continue to pass through the upper and lower boundaries of the interception net 5.

[0037] Bolt holes are opened near the front base lifting ring 32 and the side base lifting ring 33 of the base plate 31. The base 3 is fixed to the ground with anchor points in a specific site by bolt connection. The side of the front base lifting ring 32 of the interception net 5 is the impact side, and the other side is the buffer deformation side. A certain buffer space should be reserved on the buffer deformation side.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A net-collision recovery device for small and medium-sized fixed-wing UAVs, characterized in that, include: Telescopic column (1), energy dissipator (2), base (3), connecting parts (4) and interception net (5); The bottom of the telescopic column (1) is connected to the base (3); The connecting component (4) includes multiple ropes (41), some of which connect the telescopic column (1) and the base (3). Part of the rope (41) passes through the boundary of the intercept net (5) and is connected to the energy dissipator (2) and then to the base (3) to absorb the kinetic energy generated by the drone hitting the intercept net (5).

2. The small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 1, characterized in that, The telescopic column (1) includes a telescopic column body (11) and a lifting ring (12); the telescopic column body (11) is composed of multiple nested column sections with different cross-sectional dimensions; the lifting ring (12) is set at different height positions of the telescopic column body (11).

3. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 2, characterized in that, The telescopic column (11) has bolt holes on the side without the lifting ring (12) for screwing in stop bolts to fix the relative height between the sections of the telescopic column (11).

4. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 1 or 2, characterized in that, The energy dissipator (2) includes a friction plate (21), a primary slider (22), a secondary slider (23), a preload bolt (24), an energy dissipator rigging (25), an energy dissipator lifting ring (26), a stop block (27), and a rubber pad (28). The friction plate (21) has an axial groove in the middle; The first-stage slider (22) and the second-stage slider (23) are both composed of plates clamped on both sides of the friction plate (21) and the pre-tightening bolts (24) passing through the plates. The plate located on the groove side is provided with a protrusion that matches the groove and is embedded in the groove. The primary slider (22) is positioned near the energy dissipator ring (26); The secondary slider (23) is disposed in the middle of the friction plate (21); The rubber pad (28) is disposed on the side of the plate of the secondary slider (23) near the primary slider (22); The stop (27) is located at the end of the friction plate (21) away from the energy consumption ring (26); The energy-consuming device rigging (25) is arranged around the friction plate (21) and can slide freely through the secondary slider (23). The two ends of the energy-consuming device rigging (25) are respectively connected to the pre-tightening bolts (24) on both sides of the primary slider (22).

5. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 4, characterized in that, The primary working pull of the energy dissipator (2) F 1. Secondary working tensile force F 2. Primary energy storage E 1. Secondary energy storage E 2 and the total energy storage of a single energy consumer E total Calculate using the following formula: Level 1 working tensile strength: F 1=4 T 1 μ 1 Level 2 working tensile force: F 2=4( T 1+ T 2) μ 2 Level 1 energy reserve: E 1=4 T 1 μ 1 l 1 Secondary energy storage: E 2=4( T 1+ T 2) μ 2 l 2 Total energy reserves: E total =4 T 1 μ 1 l 1+4( T 1+ T 2) μ 2 l 2 in, T 1 represents the preload force of a single preload bolt (24) in the first-stage slider (22). T 2 represents the preload force of a single preload bolt (24) in the secondary slider (23). l 1 represents the distance from the primary slider (22) to the secondary slider (23). l 2 represents the distance from the secondary slider (23) to the stop (27), and μ1 represents the primary stroke. l The coefficient of friction between the slider and the friction plate (21) within the range of 1, μ2 is the second-order stroke. l The coefficient of friction between the slider and the friction plate (21) within the range of 2; The sum of the total energy reserves of all the energy dissipators (2) is greater than or equal to the maximum kinetic energy of the UAV at the moment of impact with the net.

6. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 4, characterized in that, The diameter of the energy-consuming rigging (25) is 2 mm smaller than the thickness of the friction plate (21).

7. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 1, characterized in that, The base (3) includes a base plate (31), a front base lifting ring (32), a side base lifting ring (33), and a sleeve (34); The sleeve (34) is disposed on the base plate (31) and is used to connect the bottom of the telescopic column (1); The front base lifting ring (32) and the side base lifting ring (33) are mounted on the base plate (31) and are used to connect to the telescopic column (1) or the energy consumer (2) via the connecting component (4).

8. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 7, characterized in that, The base plate (31) is in the shape of a quarter circle, and the sleeve (34) is located near the center of the quarter circle.

9. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 7 or 8, characterized in that, The front base lifting ring (32) is connected to the rope (41) via a buckle (42), and the rope (41) is further connected to the lifting ring (12) at the top of the telescopic column (1); The side base lifting ring (33) is connected by the buckle (42) and the three ropes (41): The other end of the first rope (41) is connected to the sling (12) at the top of the telescopic column (1). The second and third ropes (41) are connected to the energy dissipator (2) and pass through the hanging rings (12) at the top and middle of the telescopic column (1) in sequence, and finally connect to the upper and lower boundaries of the interception net (5).

10. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 7, characterized in that, The base plate (31) has bolt holes near the front base ring (32) and the side base ring (33) for fixing the base (3) to the ground.

11. A small-to-medium-sized fixed-wing UAV net-collision recovery device according to claim 1, characterized in that, One side of the interception net (5) is the impact side facing the drone impact, and the other side is the buffer deformation side; the impact side corresponds to the side where the front base ring (32) of the base (3) is located.

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