A heavy-pulley self-resetting interception net for resisting small unmanned aerial vehicle attacks

Abstract

This invention discloses a weight-pulley self-resetting interception net for resisting attacks by small unmanned aerial vehicles (UAVs), comprising a column (1), a base (2), a net surface (3), a pulley (4), a rope (5), a weight (6), a bracket (7), a universal joint (9), a connector (10), a base plate (11), and a bottom pressure strip (12). The column (1), bracket (7), universal joint (9), pulley (4), connector (10), rope (5), weight (6), and base plate (11) are symmetrically distributed on the left and right sides of the net surface (3). Its working principle is as follows: the lower edge of the net surface (3) is placed between the ground and the bottom pressure strip (12), and is pressed and fixed to the ground by bolts; the upper corners of both sides of the net surface (3) are locked to one end of the connector (10), and the other end of the connector (10) is locked to one end of the rope (5) that passes around the pulley (4). The other end of the rope (5) is fixed to the weight (6) by bolts. The bracket (7) is fixedly connected to the top of the column (1), and the universal joint (9) is set on the extension of the bracket (7). The pulley (4) is installed on the universal joint (9). When the drone hits the net surface (3), the net surface (3) is dented and deformed. The rope (5) is pulled by the connector (10) and the weight (6) is lifted upward to buffer the impact. When the drone falls, the weight (6) falls by gravity and pulls the rope (5) in the opposite direction, so that the net surface (3) is restored to tension and the weight (6) returns to the initial equilibrium state of contact with the ground. The device relies on the mechanical structure and gravity to achieve automatic reset after interception.

Description

Technical Field

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

[0002] In the field of low-altitude security, physical interception nets are a common means of preventing drone attacks. However, existing physical interception systems have the following problems in practical applications: First, in terms of cost, traditional interception systems rely on radar detection combined with electromechanical drive devices, resulting in high construction and maintenance costs; second, in terms of assembly, existing interception net posts are mostly welded on-site or pre-embedded in concrete, making construction limited by site conditions and difficult to relocate or assemble; third, in terms of structural simplicity, existing buffer devices rely on spring mechanisms or hydraulic dampers, which are prone to corrosion or jamming in outdoor environments, requiring high maintenance; finally, in terms of reset speed, existing interception nets are mostly rigidly fixed, lacking buffer deformation margin after drone impact, easily leading to net cable breakage or post damage, and the plastic stretching generated after impact can cause the net surface to loosen, requiring manual re-tensioning, making it difficult to cope with continuous attacks.

[0003] There is a need for a technical solution that can overcome the above-mentioned defects. The weight-pulley self-resetting structure proposed in this application has the following characteristics: In terms of cost and structure, the system does not require electric drive or electromechanical hydraulic equipment, but relies on mechanical pulley structure and gravity operation, which reduces manufacturing costs and maintenance requirements; in terms of assembly, each component is suitable for factory prefabrication and on-site bolt assembly; in terms of the reset mechanism, the lifted weight consumes the impact kinetic energy to achieve buffering, and after the external force is unloaded, gravity pulls the mesh surface back to tighten, restoring the initial interception state, eliminating the need for manual secondary tensioning. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a weight-pulley self-resetting interception net, which aims to solve the technical problems of existing interception nets being easily damaged by impact and requiring manual re-tensioning after loosening due to impact.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A self-resetting heavy-load pulley interception net for resisting attacks by small drones includes: a column (1), a base (2), a net surface (3), a pulley (4), a rope (5), a heavy object (6), a bracket (7), a universal joint (9), a connector (10), a base plate (11), and a bottom pressure strip (12); characterized in that: two of each of the column (1), base (2), pulley (4), rope (5), heavy object (6), bracket (7), universal joint (9), connector (10), and base plate (11) are provided and symmetrically distributed on the left and right sides of the net surface (3); the bottom of the column (1) is fixedly connected to the base (2) by the base plate (11) and bolts; the bracket (7) is fixedly connected to the top of the column (1) by bolts; the universal joint (9) is set on the extension of the bracket (7); the pulley (4) is rotatably mounted on the universal joint (9) by bolts as a pivot; the net surface (3) Set between two columns (1), the lower edge of the net surface (3) is placed between the ground and the bottom pressure strip (12), and is pressed and fixed to the ground by bolts passing through the bottom pressure strip (12); one end of the connector (10) is connected to the upper corners of both sides of the net surface (3) by a buckle, and the other end of the connector (10) is connected to one end of the rope (5) on the corresponding side by a buckle, so as to realize the linkage between the net surface (3) and the ropes (5) on both sides; the rope (5) passes around the pulley (4), and the other end of the rope (5) hangs vertically and is fixedly connected to the weight (6) by bolts.

[0006] Furthermore, the extension extends horizontally from the bracket (7) to the side away from the mesh surface (3), and the universal joint (9) is provided on the upper side of the end of the extension.

[0007] Furthermore, the outer periphery of the pulley (4) is provided with a groove (8) that matches the outer diameter of the rope (5) to guide and prevent the rope (5) from slipping off during sliding.

[0008] Furthermore, both ends of the connector (10) are detachable locking structures.

[0009] Furthermore, the base plate (11) is welded to the bottom of the column (1), and the base plate (11) is fixedly connected to the base (2) by bolts.

[0010] Furthermore, the initial equilibrium state of the weight-pulley self-resetting interception net is as follows: the bottom of the weight (6) is in contact with the ground, and the net surface (3) is in a taut state at this time.

[0011] The present invention has the following beneficial effects:

[0012] (1) Extending the buffer displacement to dissipate kinetic energy: In this device, the mesh surface (3) is linked to a movable weight (6) via a rope (5). When the drone impacts the mesh surface (3), the mesh surface (3) deforms in the direction of the force, and the rope (5) pulls the weight (6) upward against gravity. This process converts the impact kinetic energy of the drone into the gravitational potential energy of the weight (6), and by increasing the buffer displacement during the collision process, the impact load on the mesh surface (3) is reduced.

[0013] (2) Automatic reset by relying on gravitational potential energy: When the drone's kinetic energy is exhausted and it falls, the lifted weight (6) falls back down under the action of gravity, and pulls the rope (5) and net (3) in the opposite direction through the pulley (4). The system relies on the gravity of the weight (6) to restore the net (3) to the tension level of the initial equilibrium state, reducing maintenance work.

[0014] (3) Universal shaft guide and anti-jamming: The bracket (7) is connected to the pulley (4) through its extension and universal shaft (9), providing the pulley (4) with multi-directional rotational freedom. When the net surface (3) is subjected to an eccentric impact, causing the force direction of the rope (5) to deviate, the universal shaft (9) rotates, guiding the rotation plane of the pulley (4) to rotate to be collinear with the actual force direction of the rope (5), thus avoiding friction between the rope (5) and the side wall of the pulley (4) when sliding. Attached Figure Description

[0015] Figure 1 This is an overall front view of the weight-pulley self-resetting interception net in an embodiment of the present invention;

[0016] Figure 2 This is a top view of the weight-pulley self-resetting interception net in an embodiment of the present invention;

[0017] Figure 3 This is a side view of the overall weight-pulley self-resetting interception net in an embodiment of the present invention;

[0018] Figure 4 This is an enlarged cross-sectional view of the pulley and support components in an embodiment of the present invention;

[0019] Figure 5 This is a three-dimensional structural diagram of the pulley in an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the base embedding part in an embodiment of the present invention;

[0021] Figure 7 This is a partially enlarged schematic diagram of the universal joint portion in an embodiment of the present invention;

[0022] Figure 8 This is a partially enlarged schematic diagram of the left support extension in an embodiment of the present invention;

[0023] Figure 9 This is a partially enlarged schematic diagram of the right-side bracket extension in an embodiment of the present invention.

[0024] In the figure: column (1), base (2), mesh (3), pulley (4), rope (5), weight (6), bracket (7), groove (8), universal joint (9), connector (10), base plate (11), bottom pressure strip (12). Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1 to 9 As shown, this invention provides a weight-pulley self-resetting interception net for resisting attacks by small unmanned aerial vehicles (UAVs), comprising components such as a column (1), a base (2), a net surface (3), a pulley (4), a rope (5), a weight (6), a support (7), a universal joint (9), a connector (10), a base plate (11), and a bottom pressure strip (12). To achieve stable interception, the column (1), base (2), pulley (4), rope (5), weight (6), support (7), universal joint (9), connector (10), and base plate (11) are symmetrically arranged on the left and right sides of the net surface (3).

[0027] Reference Figure 1 , Figure 3 and Figure 6 The base (2) is embedded in the foundation. The bottom end of the column (1) is welded with a base plate (11), which is fixedly connected to the base (2) by bolts. The mesh (3) is set between the two columns (1). The lower edge of the mesh (3) is placed between the ground or the horizontal base and the bottom pressure strip (12). The bolts pass through the bottom pressure strip (12) and are fixedly connected to the base (2) or the ground. The tightening force of the bolts is used to press and fix the lower edge of the mesh (3) with the bottom pressure strip (12).

[0028] Reference Figure 1 , Figure 3 , Figure 8 and Figure 9 A bracket (7) is bolted to the top of the column (1). Figure 8 and Figure 9 As shown in the partial details, the bracket (7) has an extension that extends horizontally away from the mesh surface (3). A universal joint (9) is mounted at the end of the extension. A pulley (4) is mounted on the universal joint (9) by bolts as a pivot. Figure 4 and Figure 5 The pulley (4) has a groove (8) on its outer periphery to guide the rope (5).

[0029] Regarding the connection between the net (3) and the rope (5), the upper corners on both sides of the net (3) are connected to one end of a connector (10) on the corresponding side via a buckle. The other end of the connector (10) is also connected to one end of the rope (5) via a buckle. Through the buckle structure at both ends of the connector (10), the upper corners of the net (3) and the rope (5) that passes over the pulley (4) form a detachable linkage. The other end of the rope (5) hangs vertically downward and is fixedly connected to the weight (6) by bolts.

[0030] Reference Figure 4 , Figure 7 , Figure 8 and Figure 9 The universal joint (9) is located at the end of the extension of the bracket (7), and the pulley (4) is mounted on the universal joint (9), giving the pulley (4) multiple degrees of freedom to deflect. When the net surface (3) is impacted, causing the direction of force on the rope (5) to tilt, the universal joint (9) deflects accordingly, so that the rotation plane of the pulley (4) automatically aligns with the real-time direction of force on the rope (5), reducing frictional resistance.

[0031] The working process of this device is as follows:

[0032] (1) Initial equilibrium state: By adjusting the length of the ropes (5) on both sides, the system is in the initial equilibrium position: at this time, the bottom of the weights (6) on both sides are in contact with the ground, and the net surface (3) is in a state of tension.

[0033] (2) Interception and buffering process: The drone impacts the net surface (3), causing it to deform inward. This deformation pulls the rope (5) through the connectors (10) on both sides, and lifts the heavy object (6) upward against gravity. In this process, the kinetic energy of the drone is converted into the gravitational potential energy of the heavy object (6), and flexible buffering is achieved through displacement and yielding.

[0034] (3) Automatic reset process: After the impact ends, the weight (6) falls naturally under the action of gravity, pulling the rope (5) and the net (3) in the opposite direction until the weight (6) touches the ground again, so that the net (3) is accurately restored to the tension level of the initial equilibrium state, realizing the automatic reset of pure machinery.

[0035] 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 equivalent substitutions without departing from the concept of the present invention, and all such substitutions should be considered within the scope of protection of the present invention.

Claims

1. A self-resetting heavy-load pulley interception net for resisting attacks by small drones, comprising: The netting includes a column (1), a base (2), a mesh surface (3), a pulley (4), a rope (5), a weight (6), a bracket (7), a universal joint (9), a connector (10), a base plate (11), and a bottom pressure strip (12). The netting is characterized in that two of each of the following components are provided, symmetrically distributed on the left and right sides of the mesh surface (3). The bottom of the column (1) is fixedly connected to the base (2) by the base plate (11) and bolts; the bracket (7) is fixedly connected to the top of the column (1) by bolts; the universal joint (9) is set on the extension of the bracket (7); the pulley (4) is rotatably mounted on the universal joint (9) by bolts as a pivot; the mesh (3) is hung between the two columns (1), and the lower edge of the mesh (3) is placed between the ground and the bottom strip (12). And it is pressed and fixed to the ground by bolts passing through the bottom pressure strip (12); one end of the connector (10) is connected to the upper corners of both sides of the net surface (3) by a buckle, and the other end of the connector (10) is connected to one end of the rope (5) on the corresponding side by a buckle, so as to realize the linkage between the net surface (3) and the ropes (5) on both sides; the rope (5) goes up and passes over the pulley (4), and the other end of the rope (5) hangs vertically and is fixedly connected to the weight (6) by bolts.

2. The self-resetting weight-pulley interception net for resisting attacks by small unmanned aerial vehicles according to claim 1, characterized in that, The extension extends horizontally from the bracket (7) toward the side opposite to the mesh surface (3), and the universal joint (9) is disposed on the upper side of the end of the extension.

3. The self-resetting weight-pulley interception net for resisting attacks by small unmanned aerial vehicles according to claim 1, characterized in that, The pulley (4) has a groove (8) on its outer periphery that matches the outer diameter of the rope (5) to guide and prevent the rope (5) from slipping off.

4. The self-resetting weight-pulley interception net for resisting attacks by small unmanned aerial vehicles according to claim 1, characterized in that, Both ends of the connector (10) are detachable locking structures.

5. The self-resetting weight-pulley interception net for resisting attacks by small unmanned aerial vehicles according to claim 1, characterized in that, The base plate (11) is welded to the bottom of the column (1), and the base plate (11) is fixedly connected to the base (2) by bolts.

6. The self-resetting weight-pulley interception net for resisting attacks by small unmanned aerial vehicles according to claim 1, characterized in that, The initial equilibrium state of the weight-pulley self-resetting interception net is as follows: the bottom of the weight (6) is in contact with the ground, and the net surface (3) is in a taut state at this time.

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