A spring self-resetting damping interception net for resisting small unmanned aerial vehicle invasion

Abstract

This invention discloses a spring-loaded self-resetting damping interception net for resisting attacks from small unmanned aerial vehicles (UAVs), comprising a column (1), an L-shaped corner piece (2), a spring (3), a mesh surface (4), a base (5), spring clips (6), bolts (7), a crossbeam (8), and latches (9). Two columns (1) are symmetrically distributed on both sides of the mesh surface (4), and the crossbeam (8) is fixed to the top of the column (1) by the L-shaped corner piece (2) and the bolt (7). Latches (9) are spaced apart on the four edges of the mesh surface (4), the crossbeam (8), the ground, and the column (1); spring clips (6) are welded to both ends of the spring (3). During assembly, the spring clips (6) at both ends of the spring (3) are respectively fastened to the mesh surface (4) and the corresponding latches (9). At initial equilibrium, both the mesh surface (4) and the spring (3) are in a state of critical deformation under tension. When the drone impacts the mesh (4), the mesh deforms and pulls the spring (3) to extend. The mechanical damping effect is generated by the interlocking friction between the components and the deformation of the spring, which consumes the impact kinetic energy. After the external force disappears, the spring contracts and returns to its original position smoothly. This device achieves modular assembly and convenient maintenance.

Description

Technical Field

[0001] This invention relates to the field of low-altitude safety protection and physical interception equipment technology, specifically to a spring-loaded self-resetting damping interception net for resisting attacks by small drones. Background Technology

[0002] In the field of low-altitude security, physical interception nets are a means of preventing drone attacks. Existing interception systems suffer from the following problems in practical applications: First, regarding cost and convenience, systems with damping buffers typically use hydraulic or pneumatic dampers, resulting in high equipment costs, heavy weight, and poor deployment convenience. Second, regarding prefabricated structures and subsequent maintenance, the columns and beams of existing interception nets are mostly welded on-site, lacking modular assembly and disassembly capabilities. When the net surface or supporting components are damaged, it is difficult to replace individual parts; maintenance often requires on-site cutting or re-welding, or even complete replacement, leading to high maintenance costs and long maintenance times. Finally, regarding reset speed, rigid net surfaces are prone to loosening after impact, requiring manual re-tensioning after each impact, resulting in long daily maintenance cycles.

[0003] The self-resetting damping structure proposed in this application has the following characteristics: First, in terms of low cost and convenience, this device uses only mechanical components, utilizing the mechanical friction generated by the spring structure and fasteners to achieve the damping effect, reducing the overall weight and improving deployment convenience. Second, in terms of prefabricated structure and subsequent maintenance, the L-shaped corner brackets and bolts are used to assemble the frame, enabling independent disassembly and assembly of each component. When local damage occurs, only the fixed component needs to be replaced, lowering the maintenance threshold. Finally, in terms of reset speed, after the impact kinetic energy is consumed by mechanical friction and spring deformation, the mesh surface automatically returns to its initial state by the spring's contraction force, reducing manual tensioning operations. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a spring-loaded self-resetting damping interception net, which solves the technical problems of existing interception nets being heavy, lacking a prefabricated structure, requiring manual tensioning and reset after impact, and being difficult to replace and maintain components later.

[0005] The technical solution adopted in this invention is: a spring self-resetting damping interception net for resisting attacks by small drones, comprising: a column (1), an L-shaped corner piece (2), a spring (3), a mesh surface (4), a base (5), a spring buckle (6), a bolt (7), a crossbeam (8), and a lock (9); the column (1) is provided in two, symmetrically distributed on the left and right sides of the mesh surface (4); the base (5) is welded to the bottom of the column (1), and the base (5) is fixed to the foundation by bolts (7); the L-shaped corner piece (2) is provided in two, respectively fixed to the top of the two columns (1) by bolts (7), and the structure on the left and right sides is symmetrical; the two ends of the crossbeam (8) are respectively fixed to the two L-shaped corner pieces (2) by bolts (7), and are horizontally erected above the two columns (1); multiple locks (9) are distributed at intervals on the four edges of the mesh surface (4), and the lower side of the crossbeam (8) and the corresponding sides of the two columns (1) are provided with locks (9). Multiple buckles (9) are also distributed at intervals on the ground; spring buckles (6) are welded to both ends of the spring (3); the buckles (9) on the upper edge of the mesh (4) and the buckles (9) on the lower side of the crossbeam (8) are respectively connected by corresponding springs (3), and the spring buckles (6) at both ends of the spring (3) are respectively fastened to the buckles (9) on the mesh (4) and the crossbeam (8); the buckles (9) on the lower edge of the mesh (4) and the buckles (9) on the ground are respectively connected by corresponding springs (3), and the spring buckles (6) at both ends of the spring (3) are respectively fastened to the buckles (9) on the mesh (4) and the ground; the buckles (9) on the left and right sides of the mesh (4) and the buckles (9) on the corresponding side columns (1) are respectively connected by corresponding springs (3), and the spring buckles (6) at both ends of the spring (3) are respectively fastened to the buckles (9) on the mesh (4) and the column (1). The spring buckle (6) is fastened inside the lock (9) with a gap between them. When the mesh surface (4) is impacted and deformed, pulling the spring (3), the spring buckle (6) slides and rotates inside the lock (9), generating mechanical friction. This mechanical friction, combined with the elastic deformation of the spring (3), forms a damping system to absorb impact kinetic energy and suppress the rebound oscillation of the mesh surface (4).

[0006] Furthermore, the L-shaped corner piece (2) is a right-angle connector. The vertical side is fixed to the side wall of the column (1) by bolts (7), and the horizontal side is fixed to the end side wall of the beam (8) by bolts (7). The structure and connection method of the left and right sides are the same.

[0007] Furthermore, the latch (9) includes an annular structure for fastening, and the spring buckle (6) is an annular structure. The spring buckle (6) passes through the annular structure of the latch (9) to form the movable gap.

[0008] Furthermore, the spring (3) is a cylindrical helical tension spring with spring buckles (6) welded at both ends for engaging the lock (9).

[0009] Furthermore, the initial equilibrium state is as follows: the entire mesh surface is in a taut state, and all the springs are in a taut state and are at the critical state of elastic deformation.

[0010] Furthermore, when the mesh surface (4) is dented and deformed by the collision, the spring (3) is pulled and deflected at an angle, causing the spring buckle (6) to slide and rotate within the buckle (9), thus consuming the impact kinetic energy.

[0011] Furthermore, during the reset phase after the collision, the spring (3) contracts under its own elastic restoring force, and the spring buckle (6) undergoes reverse friction within the latch (9). This friction slows down the rebound speed of the mesh surface (4) to prevent the rapid release of the elastic potential energy accumulated by the spring (3) from causing the intercepted target to be ejected a second time, and to suppress the rebound oscillation of the mesh surface (4).

[0012] The present invention has the following beneficial effects:

[0013] (1) Frictional damping energy absorption: The four sides of the mesh (4) are connected to the crossbeam (8), the ground and the column (1) through springs (3). Since the mesh (4) and the spring (3) are taut in the initial state, the slack travel caused by the slack is eliminated. When the drone hits the mesh (4), the mesh (4) pulls the spring (3) to extend, and the spring buckle (6) slides and rotates in the buckle (9). The relative friction between the metal parts, combined with the elastic deformation of the spring (3), consumes the impact kinetic energy and plays a role in damping and buffering.

[0014] (2) Stable frame structure: This device uses L-shaped corner brackets (2) to connect the columns (1) and the beams (8). The two right-angled sides of the L-shaped corner brackets are attached to and fixed to the columns and beams respectively, which enhances the structural strength at the corners. While realizing bolt assembly, it can effectively resist the tensile force and torque generated when the drone hits the frame, and prevent the nodes from loosening.

[0015] (3) Modular design and convenient maintenance: This device uses mechanical components to achieve damping and reset, without the need for external hydraulic or pneumatic dampers. Each component can be disassembled and assembled independently by unfastening the fasteners and bolts. In the later maintenance stage, when local damage occurs, it is only necessary to unfasten the spring buckle (6) or fastening bolt (7) of the damaged area to replace a single spring, a single mesh panel or a single column at a fixed point, without the need to use welding equipment or return the entire device to the factory for repair, which reduces the difficulty and cost of maintenance and shortens the equipment recovery cycle. Attached Figure Description

[0016] Figure 1 This is an overall front view of an embodiment of the present invention;

[0017] Figure 2 This is an overall top view of an embodiment of the present invention;

[0018] Figure 3 This is an overall side view of an embodiment of the present invention;

[0019] Figure 4 This is an enlarged view of the connection between the spring and the corresponding latch (9) in an embodiment of the present invention;

[0020] Figure 5 This is an enlarged view of the connection between the L-shaped corner piece and the column and beam in an embodiment of the present invention;

[0021] Figure 6 This is an enlarged view of the connection between the column and the base in an embodiment of the present invention;

[0022] Figure 7 This is an enlarged view of the connection between the bottom spring and the latch (9) in an embodiment of the present invention.

[0023] In the diagram: column (1), L-shaped corner piece (2), spring (3), mesh surface (4), base (5), spring buckle (6), bolt (7), crossbeam (8), lock (9). Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figures 1 to 7 As shown, the present invention includes a column (1), an L-shaped corner piece (2), a spring (3), a mesh surface (4), a base (5), a spring buckle (6), a bolt (7), a crossbeam (8), and a lock (9). Two columns (1) are symmetrically arranged on the left and right sides of the mesh surface (4).

[0026] Reference Figure 1 , Figure 3 and Figure 6 The lower end of the column (1) is welded to the base (5). The base (5) has mounting holes, and bolts (7) pass through the mounting holes and are fixed to the foundation embedded parts.

[0027] Reference Figure 1 , Figure 2 and Figure 5Two columns (1) are each topped with an L-shaped corner bracket (2), with identical structures on both sides. The L-shaped corner bracket (2) is a right-angle connector, with its vertical side fixed to the side wall of the column (1) by bolts (7), and its horizontal side fixed to the end side wall of the crossbeam (8) by bolts (7). The crossbeam (8) is horizontally mounted above the two columns (1). The right-angle shape of the L-shaped corner bracket (2) allows for bidirectional bonding and fixing of the column (1) and the crossbeam (8), enabling modular assembly while bearing and dispersing the tensile force transmitted during drone impact in two vertical directions, thus maintaining frame stability.

[0028] Reference Figure 1 , Figure 4 and Figure 7 The mesh surface (4) has a mesh structure. Multiple buckles (9) are distributed at intervals along the upper edge of the mesh surface (4), and buckles (9) are distributed at corresponding positions on the lower side of the crossbeam (8). The two are connected by corresponding springs (3), and spring buckles (6) welded to both ends of the springs (3) are respectively fastened to the corresponding buckles (9) on the mesh surface and the crossbeam. Multiple buckles (9) are distributed at intervals along the left and right edges of the mesh surface (4), and they are connected to the corresponding buckles (9) on the side wall of the corresponding side column (1) by corresponding springs (3). Spring buckles (6) welded to both ends of the springs (3) are respectively fastened to the corresponding buckles (9) on the mesh surface and the column. Multiple latches (9) are distributed at intervals along the lower edge of the mesh (4), which are connected to the latches (9) on the base (5) fixed on the ground by corresponding springs (3). The base (5) is also fixed to the foundation by bolts (7). The spring buckles (6) welded to both ends of the springs (3) are respectively fastened to the corresponding latches (9) on the mesh and the base.

[0029] The spring (3) is a cylindrical helical tension spring, with bends forming ring-shaped spring buckles (6) welded to both ends. The latch (9) includes a ring-shaped structure for fastening, which is fixedly installed on the four edges of the mesh (4), the side wall of the crossbeam (8), the side wall of the column (1), and the base (5) on the ground. During assembly, the spring buckles (6) at both ends of the spring (3) are inserted into the ring-shaped structure of the latch (9) to achieve mechanized assembly and disassembly, which is conducive to the maintenance and replacement of independent components later.

[0030] The working process of this device is as follows:

[0031] (1) Initial preparation state: After assembly, the mesh surface (4) and the surrounding springs (3) are all in a taut state. Since the components are initially at the critical point of tensile deformation, the slack gap when the system is under stress is eliminated.

[0032] (2) Impact Damping Stage: When the UAV impacts the mesh (4), the mesh undergoes a concave deformation, pulling the surrounding connected springs (3) to extend further. At this time, affected by the change in the tension angle, the spring buckle (6) slides and rotates relative to the locking buckle (9) within the movement gap. Mechanical friction consumes the impact kinetic energy, and combined with the elastic buffer generated by the stretching of the spring (3), the two work together to dampen and intercept the impact. During this stage, the impact tension is also transmitted to the frame, and the L-shaped corner piece (2) plays a role in dispersing the force and preventing the nodes from breaking.

[0033] (3) Automatic Reset Phase: After the impact, the drone falls, and the external force on the net disappears. The stretched spring (3) begins to contract due to its own elastic restoring force. During the contraction and retraction process, the spring buckle (6) and the latch (9) experience reverse sliding friction again. This reverse friction provides reverse damping, slowing down the rebound speed of the net (4). Its benefits are: preventing the rapid release of the elastic potential energy accumulated by the spring (3) from causing the intercepted target to be ejected a second time, while suppressing the rebound oscillation of the net (4) to reduce the mechanical fatigue of the connecting parts, and guiding the net (4) back to its initial taut state.

[0034] The above description, in conjunction with specific embodiments, illustrates the present invention and should not be construed as limiting the specific embodiments to these embodiments. Those skilled in the art can make deductions or substitutions without departing from the concept of the present invention, and all such deductions or substitutions should be considered within the scope of protection of the present invention.

Claims

1. A spring-loaded self-resetting damping interception net for resisting attacks from small unmanned aerial vehicles, characterized in that, include: Column (1), L-shaped corner piece (2), spring (3), mesh surface (4), base (5), spring buckle (6), bolt (7), crossbeam (8) and lock (9); Two columns (1) are provided, symmetrically distributed on the left and right sides of the mesh surface (4); the bottom of the column (1) is welded with a base (5), and the base (5) is fixed to the foundation by bolts (7); Two L-shaped corner pieces (2) are provided, which are fixed to the top of the two columns (1) by bolts (7) respectively, and the left and right sides are symmetrical. The two ends of the crossbeam (8) are fixed to two L-shaped corner pieces (2) by bolts (7) respectively, and are horizontally erected above the two columns (1); Multiple latches (9) are distributed at intervals on the four edges of the mesh (4), and multiple latches (9) are also distributed at intervals on the underside of the crossbeam (8), the corresponding sides of the two columns (1), and the ground. The spring (3) has spring clips (6) welded to both ends; The latches (9) on the upper edge of the mesh (4) and the latches (9) on the lower side of the crossbeam (8) are connected by corresponding springs (3), and the spring buckles (6) at both ends of the springs (3) are respectively fastened to the latches (9) on the mesh (4) and the crossbeam (8); The latch (9) at the lower edge of the mesh (4) and the latch (9) on the ground are connected by corresponding springs (3), and the spring buckles (6) at both ends of the springs (3) are respectively fastened to the latches (9) on the mesh (4) and the ground. The latches (9) on the left and right sides of the mesh (4) are connected to the latches (9) on the corresponding side posts (1) by corresponding springs (3), and the spring buckles (6) at both ends of the springs (3) are respectively fastened to the latches (9) on the mesh (4) and the posts (1); The spring buckle (6) is fastened inside the lock (9) with a gap between them. When the mesh surface (4) is impacted and deformed, pulling the spring (3), the spring buckle (6) slides and rotates inside the lock (9), generating mechanical friction. This mechanical friction, combined with the elastic deformation of the spring (3), forms a damping system to absorb impact kinetic energy and suppress the rebound oscillation of the mesh surface (4).

2. The spring-loaded self-resetting damping interception net according to claim 1, characterized in that, The L-shaped corner piece (2) is a right-angle connector. Its vertical side is fixed to the side wall of the column (1) by bolts (7), and its horizontal side is fixed to the end side wall of the beam (8) by bolts (7). The structure and connection method of the left and right sides are the same.

3. The spring-loaded self-resetting damping interception net according to claim 1, characterized in that, The latch (9) includes an annular structure for fastening, and the spring buckle (6) is an annular structure. The spring buckle (6) passes through the annular structure of the latch (9) to form the movable gap.

4. The spring-loaded self-resetting damping interception net according to claim 1, characterized in that, The spring (3) is a cylindrical helical tension spring with spring buckles (6) welded at both ends for fastening the lock (9).

5. The spring-loaded self-resetting damping interception net according to claim 1, characterized in that, The initial equilibrium state is as follows: the mesh surface (4) is in a taut state, and all the springs (3) are in a taut state and are in a critical state of elastic deformation.

6. The spring-loaded self-resetting damping interception net according to claim 1, characterized in that, When the mesh surface (4) is dented and deformed by the collision, the spring (3) is pulled and deflected at an angle, causing the spring buckle (6) to slide and rotate within the buckle (9), thus consuming the impact kinetic energy.

7. The spring-loaded self-resetting damping interception net according to claim 1, characterized in that, During the reset phase after the collision, the spring (3) contracts under its own elastic restoring force, and the spring buckle (6) rubs in the buckle (9) in the opposite direction. This friction slows down the rebound speed of the mesh surface (4) to prevent the rapid release of the elastic potential energy accumulated by the spring (3) from causing the intercepted target to be ejected a second time, and to suppress the rebound oscillation of the mesh surface (4).

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