Rapidly deployable and retractable low-altitude security device

Abstract

A rapidly deployable and retractable low-altitude security device, comprising: a critical area, a plurality of protective net covers, a plurality of fixing devices, a fixing tube, an elastic telescopic support column, a plurality of support members, and a jacking assembly. By means of the provision of the fixing device, a bullet-proof device can be quickly arranged around the critical area or recovered; and components of the fixing device are arranged in a snap-fit manner, which facilitates the replacement of damaged components, thereby ensuring the integrity of the protective net covers of the bullet-proof device at all times, and ensuring the protective performance of the bullet-proof device. By means of the provision of the jacking assembly, assistance can be provided in the arrangement of the bullet-proof device, and the support members and the protective net covers can be quickly unfolded or folded, thereby simplifying the arrangement process and improving the arrangement efficiency. Compared with simple physical barrier protection, the security device increases the layers and flexibility of protection, and improves the success rate of defense as a second line of defense.

Description

A rapidly deployable low-altitude security device Technical Field

[0001] This utility model belongs to the field of weapon protection technology, which takes into account the rapid deployment needs of both military (armored vehicles, ships) and civilian (oil depots, nuclear power plants) scenarios, and specifically relates to a rapidly deployable low-altitude security device. Background Technology

[0002] With the continuous development of science and technology, weapons characterized by informatization, networking, long-range attacks, and precision strikes are emerging. Attacks from low-altitude weapons, particularly drones, pose a significant threat, and protective technologies within defense systems are constantly being updated and developed. Important areas such as oil depots, power substations, ammunition depots, nuclear facilities, theater command centers, and even presidential palaces and river dams are key defense targets and require effective protection. Current defense systems typically employ thickened bunkers or deep excavations to keep artillery shells away from key protected areas. These methods rely on sheer force and require substantial improvement in terms of engineering workload, construction efficiency, and implementation effectiveness. A more innovative approach, using deflections to alter the trajectory of projectiles and ensure the safety of critical areas, represents a growing trend and direction for development.

[0003] To address the aforementioned issues, Chinese invention patent application number 202210967419.9 discloses a novel bulletproof device, comprising a conical protective mesh cover (the protective mesh cover is woven from graphene fiber, aramid fiber, Kevlar fiber, alumina fiber, carbon fiber, or ultra-high molecular weight polyethylene fiber), an elastic telescopic support column, and multiple spraying devices; the protective mesh cover is positioned above and around a critical area; an extension rod is fixed to the outside of the critical area; the lower end of the elastic telescopic support column is fixedly connected to the critical area, and the upper end of the elastic telescopic support column is connected to the protective mesh cover. The top is fixedly connected; the lower end of the protective net is fixedly connected to the outer end of the extension rod or the pre-embedded pile; the spraying device is set inside the protective net, the elastic telescopic component and the timely sprayed high-pressure water and air flow push the incoming shells outward, so that they fall outside the protected area or are destroyed in the pre-set trench. It can protect important areas in a way that uses softness to overcome hardness. With the rapid development of military technology, artillery, machine guns, laser weapons, jamming and anti-jamming information warfare technologies each have their own strengths. In addition, with the "golden bell cover and iron shirt" that uses softness to overcome hardness, multiple layers of protection form an iron wall.

[0004] However, the connection structure of the aforementioned bulletproof device in critical areas is relatively simple. When the connection structure is damaged, the damaged parts cannot be replaced in time, which can easily lead to gaps in the protective mesh and affect the protective performance of the bulletproof device. Furthermore, the bulletproof device cannot automatically open and close the support components, which is time-consuming and inconvenient in actual deployment. Therefore, this application provides a low-altitude security device that can be quickly deployed and retracted, making the connection structure of the bulletproof device easy to replace, robust and reliable, and capable of automatic opening and closing, allowing for flexible deployment according to actual usage. Summary of the Invention

[0005] This invention provides a rapidly deployable low-altitude security device, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the solution of this utility model is as follows:

[0007] A rapidly deployable low-altitude security device includes: an important area, several protective net covers, several fixing devices, elastic telescopic support columns, and a top support assembly;

[0008] The elastic telescopic rod is set at the center above the important area, the fixing device is set around the important area, the upper end of the protective net is fixedly connected to the elastic telescopic support column, and the lower end is connected to the fixing device. The fixing device is used to realize the quick fixing or recycling of the protective net. A spraying device is provided on the inner side of the protective net.

[0009] The elastic telescopic support column is equipped with a top support component, which is used to drive the protective net cover to open or close synchronously.

[0010] Furthermore, it also includes a fixing tube and several supporting components. The fixing tube is fixedly connected to the center position above the important area, and an elastic telescopic support rod is provided at the upper end of the fixing tube.

[0011] The protective netting is evenly distributed around the fixing tube, and the fixing devices are evenly arranged around the periphery of the important area and evenly distributed around the center of the important area.

[0012] The lower end of the protective net cover is connected to a first connecting ring via a connecting spring, and the first connecting ring is respectively connected to the fixing device.

[0013] Several of the aforementioned support members are evenly distributed around the fixed tube as the center. The upper end of each support member is rotatably connected to the elastic telescopic support column, and the lower end is fixedly connected to the first connecting ring. A spraying device is provided on the support member.

[0014] The fixing device includes: a mounting base, a connecting component being snapped into the middle of the mounting base, the mounting base being provided with a locking block for snapping into the connecting component, and the connecting component cooperating with the first connecting ring.

[0015] Furthermore, a first electric telescopic rod is slidably arranged on the upper part of the inner cavity of the fixed tube, a support plate is fixedly connected to the lower part of the first electric telescopic rod, a support spring is arranged between the lower surface of the support plate and the bottom of the inner cavity of the fixed tube, and a sleeve is arranged between the outer side wall of the first electric telescopic rod and the inner side wall of the fixed tube.

[0016] The protruding end of the first electric telescopic rod extends out of the upper end of the fixed tube and is fixedly connected to the lower end of the elastic telescopic support column through a connecting sleeve. The lower part of the inner cavity of the elastic telescopic support column is fixedly connected to a second electric telescopic rod. The protruding end of the second electric telescopic rod cooperates with the top support assembly to open the support member.

[0017] Furthermore, the top support assembly includes an inner ring sleeve and an outer ring sleeve. The inner ring sleeve is fixedly connected to the upper end of the second electric telescopic rod, and the outer ring sleeve is sleeved on the outer side wall of the elastic telescopic support column. The inner ring sleeve and the outer ring sleeve are fixedly connected by a connecting plate. The elastic telescopic support column is provided with a moving groove for avoiding the connecting plate.

[0018] A plurality of first lugs are fixedly connected to the outer side wall of the outer ring sleeve, and a plurality of second lugs are respectively provided on the plurality of support members. A top support rod is provided between the first lugs and the second lugs, and the two ends of the top support rod are rotatably connected to the first lugs and the second lugs respectively.

[0019] As the second electric telescopic rod extends or retracts, the top support assembly causes the support components to open or close.

[0020] Furthermore, the connecting assembly includes: a second connecting ring, a connecting rod fixedly connected to the lower part of the second connecting ring, a snap-fit ​​seat fixedly connected to the lower end of the connecting rod, and the first connecting ring cooperating with the second connecting ring;

[0021] An opening is provided on one side of the second connecting ring, and a rotating shaft is provided at the upper part of the opening. A rotating plate is rotatably connected to the rotating shaft. The lower end of the rotating plate abuts against the lower part of the opening, so that the rotating plate rotates inside the second connecting ring. A magnetic block is provided at the lower part of the rotating plate, and the magnetic block is magnetically connected to the lower part of the opening.

[0022] Furthermore, torsion springs are respectively provided on both sides of the upper part of the rotating plate, and the torsion springs cooperate with the upper part of the opening and the rotating plate respectively, so that the rotating plate closes the opening.

[0023] Furthermore, the mounting base has a mounting hole in the middle, which is adapted to the snap-fit ​​base;

[0024] The number of the locking blocks is two, and they are symmetrically distributed on both sides of the mounting hole. A sliding plate is provided on the upper part of the mounting base, and a sliding groove is formed between the sliding plate and the mounting base. The locking blocks are slidably connected in the sliding groove. A baffle is provided on the side of the sliding plate away from the mounting hole, and a return spring is provided between the baffle and the adjacent locking block.

[0025] Furthermore, a limiting plate is provided on the side of the slide plate adjacent to the mounting hole.

[0026] Furthermore, the lower part of the card holder is symmetrically provided with two first transition surfaces, and the card block is provided with a second transition surface that cooperates with the first transition surfaces.

[0027] Furthermore, extension plates are symmetrically arranged on both sides of the mounting base, bolt holes are provided on the extension plates, and several reinforcing plates are provided between the extension plates and the mounting base.

[0028] After adopting the above solution, the beneficial effects of this utility model are as follows:

[0029] 1. The low-altitude security device of this utility model, which allows for rapid deployment and retrieval, enables the bulletproof device to be quickly deployed or retrieved around important areas through the setting of a fixing device. Furthermore, the various components of the fixing device are connected by snap-fit ​​mechanisms, facilitating the replacement of damaged parts and ensuring the integrity of the protective mesh of the bulletproof device at all times, thus guaranteeing the protective performance of the bulletproof device. The setting of the top support component assists in the deployment of the bulletproof device, allowing the support components and protective mesh to be quickly opened or closed, simplifying the deployment process and improving deployment efficiency.

[0030] 2. The fast-deployment low-altitude security device of this utility model, through the setting of the connecting components, can realize the quick connection of the first connecting ring and the second connecting ring, which can improve the deployment efficiency of the bulletproof device. Furthermore, the structural setting of the connecting components can ensure the reliability of the cooperation between the first connecting ring and the second connecting ring, and prevent them from falling off, thus avoiding protective loopholes in the bulletproof device. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the overall assembly of a rapidly deployable low-altitude security device according to this utility model;

[0032] Figure 2 is a schematic diagram of the fixed tube and elastic telescopic support column structure of a fast-retracting low-altitude security device according to this utility model;

[0033] Figure 3 is a schematic diagram of the top support component structure of a rapidly retractable low-altitude security device according to this utility model;

[0034] Figure 4 is a schematic diagram of the cooperation between the bulletproof device and the fixing device of the rapidly retractable low-altitude security device of this utility model;

[0035] Figure 5 is a schematic diagram of the connection components of a fast-retracting low-altitude security device according to this utility model;

[0036] Figure 6 is a schematic diagram of the mounting base of a fast-retracting low-altitude security device according to this utility model;

[0037] Figure 7 is a schematic diagram of the interior of the mounting base of a fast-retracting low-altitude security device according to this utility model;

[0038] Figure 8 is a cross-sectional view of the mounting base and connecting components of a fast-retracting low-altitude security device according to this utility model.

[0039] Figure 9 is a schematic diagram of the application of this utility model on a tank;

[0040] Figure 10 is a schematic diagram of the application of this utility model on the island of a ship.

[0041] Label Explanation:

[0042] 1. Important area; 2. Protective mesh cover; 201. First connecting ring; 202. Connecting spring;

[0043] 3. Fixing device; 301. Mounting base;

[0044] 302. Connecting assembly; 3021. Second connecting ring; 3022. Connecting rod; 3023. Snap-fit ​​seat; 3024. Rotating plate; 3025. Rotating shaft; 3026. Magnetic block; 3027. First transition surface;

[0045] 303, Card Block; 3031, Second Transition Surface;

[0046] 304, slide plate; 3041, slide groove;

[0047] 305. Baffle; 306. Return spring; 307. Mounting hole; 308. Bolt hole; 309. Reinforcing plate; 310. Limiting plate;

[0048] 4. Fixed pipe; 5. Flexible telescopic support column; 501. Moving groove; 6. Support component;

[0049] 7. Top support assembly; 701. Inner ring sleeve; 702. Outer ring sleeve; 703. Connecting plate; 704. First hanging lug; 705. Second hanging lug; 706. Top support rod;

[0050] 8. First electric telescopic rod; 9. Support plate; 10. Support spring; 11. Sleeve; 12. Connecting sleeve; 13. Second electric telescopic rod; 14. Internal spraying device. Embodiments of the present invention

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments of this application and the accompanying drawings.

[0052] This device is a low-altitude attack protection device with rapid deployment and retraction capabilities. It is suitable for low-altitude protection scenarios for armored vehicles, ships, and fixed facilities. It can effectively prevent attacks from low-altitude flying targets (such as drones, low-altitude aircraft, and low-altitude projectiles). Through automatic opening and closing, intelligent linkage, and sacrificial component design, it can achieve rapid deployment and rapid replacement after damage, meeting the emergency protection needs of military equipment and fixed defense facilities.

[0053] This device can be widely used for low-altitude protection of military equipment (such as tanks and ships) and civilian facilities (such as oil depots and nuclear power plants), and has cross-scenario adaptability.

[0054] As shown in Figures 1-4, a rapidly deployable low-altitude security device includes: an important area 1, several protective net covers 2, several fixing devices 3, fixing pipes 4, elastic telescopic support columns 5, several support components 6, and a top support assembly 7.

[0055] The fixed tube 4 is fixedly connected to the center position above the important area 1. The upper end of the fixed tube 4 is provided with an elastic telescopic support rod 5. The protective net cover 2 is evenly distributed around the fixed tube 4. The fixing device 3 is evenly arranged around the periphery of the important area 1 and is evenly distributed around the center of the important area 1. The upper end of the protective net cover 2 is fixedly connected to the elastic telescopic support rod 5, and the lower end is connected to the first connecting ring 201 through the connecting spring 202. The first connecting ring 201 cooperates with the fixing device 3.

[0056] A plurality of the aforementioned support members 6 are evenly distributed around the fixed tube 4 as the center. The upper end of the support member 6 is rotatably connected to the elastic telescopic support column 5, and the lower end is fixedly connected to the first connecting ring 201. A spraying device is provided on the support member 6.

[0057] The elastic telescopic support column 5 is provided with a top support component 7, which is used to expand the support member 6.

[0058] The fixing device 3 includes: a mounting base 301, a connecting component 302 is snapped into the middle of the mounting base 301, the mounting base 301 is provided with a locking block 303 for snapping into the connecting component 302, and the connecting component 302 cooperates with the first connecting ring 201.

[0059] The lower end of the protective mesh cover 2 is connected to the first connecting ring 201 via a connecting spring 202, employing a "sacrificial component design" to ensure quick replacement of damaged parts. The outer ring wall of the first connecting ring 201 has 3-6 U-shaped slots evenly spaced circumferentially. The slot width matches the wire diameter of the connecting spring 202, and the slot depth is 1.5-2 times the spring wire diameter. The upper end of the connecting spring 202 is engaged with the U-shaped slots via a snap-fit ​​fastener made of stainless steel, which is bolted to the first connecting ring 201. Testing shows that the tensile strength of this connection structure is no less than 80 MPa, while the tensile strength of the engagement between the snap-fit ​​seat 3023 and the snap-fit ​​block 303 in the connecting assembly 302 is designed to be 40-50 MPa, lower than the connection strength between the first connecting ring and the connecting spring. When the protective system is impacted, the connecting assembly 302 will be damaged first, while the connection structure between the first connecting ring and the connecting spring remains intact, preventing protective gaps in the protective mesh cover.

[0060] The specific structure of the spraying device and other auxiliary structures installed on the support member 6 have been described in detail in the applicant's earlier Chinese invention patent application number 202210967419.9, and will not be repeated here.

[0061] The spraying device can select the spraying medium (such as airflow, water flow, or fire extinguishing material) according to the needs of the scenario. For the specific structure and control logic, please refer to the specific implementation method.

[0062] In one specific embodiment, the important area 1 can be an oil depot, a warship's command tower, a command and operations room, an armory, an important conference room, an important resource depot, and a combat vehicle. These important areas 1 are surrounded by pre-installed connectors that cooperate with the fixing device 3. The connectors can be pre-embedded bolt holes, telescopic extension rods, or metal connecting plates. The fixing device 3 is fixedly connected to the connectors and cooperates with the protective net cover 2, thereby completing the bulletproof arrangement above the important area 1.

[0063] As shown in Figures 2-3, a first electric telescopic rod 8 is slidably arranged on the upper part of the inner cavity of the fixed tube 4, a support plate 9 is fixedly connected to the lower part of the first electric telescopic rod 8, a support spring 10 is arranged between the lower surface of the support plate 9 and the bottom of the inner cavity of the fixed tube 4, and a sleeve 11 is arranged between the outer wall of the first electric telescopic rod 8 and the inner wall of the fixed tube 4.

[0064] The protruding end of the first electric telescopic rod 8 extends out of the upper end of the fixed tube 4 and is fixedly connected to the lower end of the elastic telescopic support column 5 through the connecting sleeve 12. The lower part of the inner cavity of the elastic telescopic support column 5 is fixedly connected to the second electric telescopic rod 13. The protruding end of the second electric telescopic rod 13 cooperates with the top support assembly 7 to open the support member 6.

[0065] As shown in Figures 2-3, the top support assembly 7 includes an inner ring sleeve 701 and an outer ring sleeve 702. The inner ring sleeve 701 is fixedly connected to the upper end of the second electric telescopic rod 13. The outer ring sleeve 702 is sleeved on the outer side wall of the elastic telescopic support column 5. The inner ring sleeve 701 and the outer ring sleeve 702 are fixedly connected by a connecting plate 703. The elastic telescopic support column 5 is provided with a moving groove 501 for avoiding the connecting plate 703.

[0066] A plurality of first lugs 704 are fixedly connected to the outer side wall of the outer ring sleeve 702, and a plurality of second lugs 705 are respectively provided on the plurality of support members 6. A top support rod 706 is provided between the first lugs 704 and the second lugs 705, and the two ends of the top support rod 706 are rotatably connected to the first lugs 704 and the second lugs 705 respectively.

[0067] As the second electric telescopic rod 13 extends or retracts, the top support assembly 7 drives the support member 6 to open or close.

[0068] In one specific embodiment, when the support member 6 is closed by the top support assembly 7, the bottom of the support member 6 is prone to collision with the ground or other supporting surfaces. Therefore, by setting the first electric telescopic rod 8, the elastic telescopic support column 5 is lifted when the support member 6 is closed, thereby simultaneously lifting the support member 6 and the protective net cover 2, avoiding collision damage between the support member 6 and the protective net cover 2 and the supporting surface. Conversely, when the support member 6 is opened, the first electric telescopic rod 8 is retracted, cooperating with the support member 6 and the protective net cover 2 to descend and connect with the fixing device 3.

[0069] The top support assembly drives the support member 6 to automatically open and close. To prevent damage and collisions to components during movement, an angle limiting block is set at the rotational connection between the support member 6 and the elastic telescopic support column 5, limiting the opening angle of the support member 6 to 0°-120° (0° when closed, 120° when fully open), preventing excessive rotation from causing fatigue damage to the connecting parts. Buffer pads made of polyurethane material with a thickness of 2-3mm are set at the rotating joints at both ends of the top support rod 706 to absorb impact forces during movement. The extension / retraction speed of the second electric telescopic rod 13 is designed to be 50-80mm / s, and its uniform movement is controlled by a PLC controller to avoid instantaneous loads due to excessive speed. Simultaneously, the action sequence of the first electric telescopic rod 8 and the second electric telescopic rod 13 is set to "lift first, then unfold; close first, then lower," meaning that before the support member 6 unfolds, the first electric telescopic rod 8 first lifts the elastic telescopic support column 5 by 5-10cm to prevent the support member 6 from colliding with the ground / installation surface.

[0070] The protective net cover 2, in conjunction with the support member 6, achieves anti-entanglement and stable protection. The specific design is as follows: The protective net cover 2 is made of multi-layer composite fiber weaving. The outer layer is a mixed woven layer of alumina fiber and polytetrafluoroethylene fiber, possessing excellent high-temperature resistance and wear resistance. The middle layer is an ultra-high molecular weight polyethylene fiber layer, with high strength and good toughness, which can improve the impact resistance of the protective net cover. The inner layer is an aramid fiber layer, further enhancing the overall rigidity of the protective net cover. After pre-forming treatment, the protective net cover has a surface density of 1.2-1.5 kg / m². When unfolded, it naturally tauts; when closed, it folds into a fan shape along the support member 6, without any loose or redundant parts. The support members 6 are evenly distributed around the fixing tube 4, with 6-8 members. The included angle between adjacent support members 6 is 45°-60°. The protective net cover 2 is double-fixed to each support member 6 using Velcro and buckles, ensuring synchronous movement between the net cover and the support member and preventing relative sliding that could lead to entanglement.

[0071] As shown in Figure 5, the connecting component 302 includes: a second connecting ring 3021, a connecting rod 3022 fixedly connected to the lower part of the second connecting ring 3021, a snap-fit ​​seat 3023 fixedly connected to the lower end of the connecting rod 3022, and a first connecting ring 201 cooperating with the second connecting ring 3021;

[0072] The second connecting ring 3021 has an opening on one side, and a rotating shaft 3025 is provided at the upper part of the opening. The rotating shaft 3025 is rotatably connected to a rotating plate 3024. The lower end of the rotating plate 3024 abuts against the lower part of the opening, so that the rotating plate 3024 rotates inside the second connecting ring 3021. A magnetic block 3026 is provided at the lower part of the rotating plate 3024, and the magnetic block 3026 is magnetically connected to the lower part of the opening.

[0073] The connecting component 302, through the setting of the rotating plate 3024, allows the first connecting ring 201 to engage with the second connecting ring 3021 when needed. The first connecting ring 201 is brought into contact with the rotating plate 3024 and moved inwards towards the second connecting ring 3021, thus engaging the first connecting ring 201 with the second connecting ring 3021. Furthermore, the rotating plate 3024 is magnetically connected to the lower part of the opening via the magnetic block 3026, completing the closure of the opening. As shown in Figure 6, the engagement between the lower end of the rotating plate 3024 and the lower part of the opening prevents the rotating plate 3024 from rotating to the outside of the second connecting ring 3021, thereby preventing the first connecting ring 201 from falling out of the second connecting ring 3021. This engagement method allows for rapid deployment of the bulletproof device and ensures reliable operation, minimizing the risk of security loopholes in the bulletproof device 2.

[0074] In one specific embodiment, torsion springs are respectively provided on both sides of the upper part of the rotating plate 3024. The torsion springs cooperate with the upper part of the opening and the rotating plate 3024 respectively, so that the rotating plate 3024 closes the opening. By providing torsion springs, the rotating plate 3024 can automatically reset and close the opening, further improving the convenience of the first connecting ring 201 and the second connecting ring 3021 cooperating.

[0075] As shown in Figures 6-8, the mounting base 301 has a mounting hole 307 in the middle, and the mounting hole 307 is adapted to the snap-fit ​​base 3023;

[0076] Two locking blocks 303 are symmetrically distributed on both sides of the mounting hole 307. A sliding plate 304 is provided on the upper part of the mounting base 301, forming a sliding groove 3041 between the sliding plate 304 and the mounting base 301. The locking blocks 303 are slidably connected within the sliding groove 3041. A baffle 305 is provided on the side of the sliding plate 304 away from the mounting hole 307, and a return spring 306 is provided between the baffle 305 and the adjacent locking block 303. With the locking blocks 303 on the mounting base 301, when installing the connecting assembly 302 and the mounting base 301, it is only necessary to push open the locking blocks 303 and insert the locking seat 3023 into the mounting hole 307. After the locking seat 3023 is inserted, the locking blocks 303 move above the locking seat 3023 under the action of the return spring 306, thus completing the locking of the locking seat 3023 and enabling the connecting assembly 302 to cooperate with the mounting base 301.

[0077] In one specific embodiment, under the condition of satisfying the connection strength, the mating strength of each component of the connecting assembly 302 is less than the mating strength between the connecting assembly 302 and the mounting base 301. When the bulletproof device 2 is impacted, if an overload occurs, the components of the connecting assembly 302 will be damaged first, thereby protecting the components on the mounting base 301, facilitating subsequent replacement and maintenance, and reducing the difficulty of maintenance.

[0078] As shown in Figure 6, a limiting plate 310 is provided on the side of the slide plate 304 adjacent to the mounting hole 307. The limiting plate 310 can limit the movement distance of the locking block 303 and prevent the locking block 303 from falling out of the slide plate 3041.

[0079] As shown in Figures 5-8, the lower part of the latching base 3023 is symmetrically provided with two first transition surfaces 3027, and the latching block 303 is provided with a second transition surface 3031 that cooperates with the first transition surfaces 3027. With the transition surfaces, when the connecting component 302 needs to be installed on the mounting base 301, it is only necessary to align the connecting component 302 with the mounting hole 307 and press it down. Through the mutual abutment of the transition surfaces, the latching base 3023 pushes the latching block 303 open, facilitating the insertion of the latching base 3023 into the mounting hole 307. After being inserted into place, the latching block 303 extends under the action of the return spring 306 and abuts against the upper surface of the latching block 3023, thus fixing the connecting component 302.

[0080] As shown in Figures 3 and 6, extension plates are symmetrically arranged on both sides of the mounting base 301. Bolt holes 308 are provided on the extension plates, and several reinforcing plates 309 are provided between the extension plates and the mounting base 301. The bolt holes 308 facilitate the installation and fixation of the mounting base 301 with the preset connecting parts. In other embodiments, the mounting base 301 can also be fixed around the important area 1 by welding or with the help of external clamping parts, which is not limited here.

[0081] By setting the reinforcing plate 309, the overall load-bearing capacity of the mounting base 301 can be improved, thus enhancing its stability.

[0082] As shown in Figure 9, when this protective device is applied to a tank, it is mainly used to protect the rotating turret of the tank. The tracks of existing tanks are usually equipped with rotatable high-strength ceramic composite fiber track guards, which are relatively mature conventional track protection technologies and are not within the protection range of this protective device. A rotating plate that rotates synchronously with the turret can be installed below the rotating turret. The protective net cover 2 and the fixing device 3 of the protective device cooperate with the rotating plate, so that when the turret rotates, the entire protective device can also rotate with the turret to avoid interference with the muzzle.

[0083] As shown in Figure 10, when this protective device is applied to a ship, it is mainly used to protect the island structure of the ship. The stroke of the first electric telescopic rod 8 and the second electric telescopic rod 13 in the protective device can be flexibly selected according to actual needs to avoid interference between the arrangement of the protective device and the protected area.

[0084] Example 1:

[0085] Multi-layer composite structure design: The protective mesh cover 2 consists of two main protective layers, inner and outer, and a high-strength, high-elasticity buffer layer in the middle. The outer main protective layer is made of a blend of high-strength ceramic fiber, alumina fiber, and polytetrafluoroethylene fiber. The blend of ceramic fiber, alumina fiber, and polytetrafluoroethylene fiber in the outer layer can withstand impact and high temperature. Its high hardness can effectively block direct puncture by sharp objects and protect against explosions and high temperatures. Polytetrafluoroethylene also has the characteristics of low coefficient of friction and corrosion resistance. The improved mesh cover exhibits enhanced weather resistance and corrosion resistance in harsh environments ranging from -40°C to +60°C. This effectively extends the service life of the protective mesh cover, while the high tensile strength and impact resistance of ultra-high molecular weight polyethylene fiber and carbon fiber aramid fiber further enhance its strength, thus improving the overall performance of the protective mesh cover 2. The efficient use of composite fibers in the woven mesh cover allows it to absorb a significant amount of impact energy through deformation when subjected to impact. The surface of the protective mesh cover 2 is grid-like, with a hexagonal design. Compared to traditional square grids, hexagonal grids are structurally more stable and can more evenly distribute impact force. Simultaneously, the close arrangement of the hexagons provides more contact points within the same area, improving the coverage and effectiveness of the protection.

[0086] The mesh has a side length of 0.5–1 cm. This size ensures the protective mesh is strong enough to withstand common attacks without being too dense to obstruct airflow or visibility. For attacks from small drones and low-altitude weapons, this mesh size can effectively intercept and deflect them. Considering that some modern low-altitude weapons contain small shrapnel or steel ball fragments after the explosion of the bomb, a ceramic fiber protective layer, similar to that of a personal body armor, can be added to the outside of the mesh or to the innermost part of the body, further ensuring the vehicle's safety.

[0087] Based on the actual needs of the battlefield, in a specific implementation, conductive metal wires (such as copper wires) are added to the protective mesh cover 2 and woven together to form an electromagnetic shielding layer. This can block and shield electromagnetic radiation, protect the normal operation of electronic equipment and communication systems inside the vehicle, and prevent the enemy from detecting the vehicle's position and status.

[0088] Practical Applications: In urban warfare environments, armored vehicles frequently need to maneuver through narrow streets and buildings, facing threats from various directions and altitudes. The multi-layered composite structure and optimized mesh design of the Protective Net 2 make it highly effective against threats such as explosive fragments dropped from buildings, improvised projectiles, and low-flying small drones. Whether from direct impact or shockwaves and debris from explosions, the Protective Net 2 effectively protects against these threats, reducing injury to the vehicle and its occupants.

[0089] In field combat environments, the rapid opening and closing function of the protective net cover 2, along with its excellent wear resistance and impact resistance, enables it to adapt to various harsh conditions. For example, when traversing areas overgrown with thorns, the protective net cover 2 may be scratched and bumped by objects such as branches, but the rapid opening and closing function ensures that the protective net cover 2 can close in time, ensuring that its protective performance is not affected. At the same time, its electromagnetic shielding function can also ensure the safe operation of the armored vehicle's electronic equipment in complex electromagnetic environments in the field (such as during thunderstorms).

[0090] Based on the actual needs of both military and civilian use, the protective netting used on armored vehicles can be installed on a frame with rollers, wheels and brakes, and modified into a mobile protective device for use in battlefield medical treatment, logistics cooking, earthquake relief and other places.

[0091] Example 2:

[0092] When this protective device is applied to a ship, it can be further equipped with an additional internal spray device 14. The internal spray device 14 includes a straight rod, a nozzle mounted on top of the rod, and a rotating platform that cooperates with the nozzle. The spray device 14 is equipped with a corresponding intelligent control system to control the movement of the rotating platform to achieve multi-directional rotational spraying of the nozzle. Different types of high-pressure nozzles are rationally distributed around the island superstructure and at key locations on its top. These include multi-angle adjustable high-pressure water jet nozzles and jet nozzles. The water jet nozzles feature a wide-angle design, enabling large-area water curtain coverage, and the spray pressure can be intelligently adjusted according to the speed and distance of the incoming target. The jet nozzles possess high velocity and strong thrust, enabling them to quickly change the direction of incoming objects.

[0093] For example, at the top edge of the island superstructure, a high-pressure water jet nozzle capable of 360-degree rotation is installed every 1 to 10 meters. Its spray angle can be adjusted vertically from 0 to 90 degrees, achieving 360-degree full coverage horizontally. On the sides of the island superstructure, an array of multiple jet nozzles is installed every 1 to 5 meters. Each group of nozzles can independently control the spray direction and intensity to counter targets approaching from different directions and heights.

[0094] The high-pressure water jet system is powered by the ship's own propulsion system and uses a specially designed high-pressure pump and compressor unit to pressurize the water and gas. The high-pressure pump employs variable frequency technology, enabling it to adjust its output pressure and flow rate in real time based on incoming target information detected by sensors, ensuring optimal water jet performance. The compressor unit possesses efficient air compression capabilities, providing a stable high-pressure air source for the jet nozzles.

[0095] In addition, to ensure the system's reliability in emergency situations, it is equipped with an independent backup energy system, such as an energy storage battery pack. In the event of damage or malfunction to the ship's main propulsion system, the backup energy system can be quickly activated to provide sufficient energy to the high-pressure water jet system, buying time for the ship to take other countermeasures.

[0096] This protective device integrates with shipboard radar, electro-optical sensors, and other detection equipment, and is also networked with anti-missile systems within the theater of operations. It enables real-time monitoring and tracking of incoming drones and low-altitude weapons. Once the sensors detect an incoming target, the control system quickly calculates the target's flight trajectory, speed, and angle, and automatically controls the activation of the high-pressure water jet system and the adjustment of the nozzles based on this information.

[0097] For example, the control system can precisely control the spray pressure and spray time of the water jet nozzles based on the target's distance and speed to create a water curtain of appropriate intensity and thickness. For jet nozzles, the control system can adjust the nozzle's spray angle and thrust based on the target's flight direction and altitude to ensure that incoming targets are accurately propelled away from the island superstructure.

[0098] When a drone or low-altitude weapon approaches the island superstructure, the high-pressure water jet system activates rapidly, spraying high-pressure water or air at the incoming target from multiple angles. The impact of the water and air gently alters the target's flight attitude and direction, causing it to lose balance or deviate from its original trajectory, ultimately crashing into the sea. This method of defense, which uses gentle force to overcome rigidity, effectively prevents incoming objects from exploding or generating fragments upon interception, thus avoiding secondary damage to the island superstructure and the ship.

[0099] For a small drone flying towards the island superstructure at a certain speed and angle, when a high-pressure water jet sprays a powerful stream of water at it, the impact force of the water flow acts on the drone's wings and fuselage, causing changes in lateral and downward forces. This alters the drone's flight path, preventing it from accurately hitting the island superstructure. Simultaneously, the high-speed airflow from the jet nozzles can further assist in adjusting the drone's trajectory, ensuring its safe departure from the island superstructure.

[0100] Compared to relying solely on physical barriers such as the protective netting 2, the high-pressure water jet system adds layers of protection and flexibility. Even if the protective netting 2 fails to completely block incoming targets, the high-pressure water jet system can act as a second line of defense, intercepting and deflecting targets that have breached the netting. This multi-layered protection mechanism significantly improves the island superstructure's success rate in defending against drones and low-altitude weapon attacks, enhancing the ship's survivability in complex battlefield environments.

[0101] Furthermore, the high-pressure water jet system does not generate electromagnetic radiation or other signals during operation, avoiding the risk of revealing the ship's position due to its own protective measures. At the same time, water and air, as protective media, are widely available and relatively inexpensive, without placing an excessive burden on the ship's combat resources, making them highly practical and economical.

[0102] This device is equipped with an intelligent control system that can be linked with existing defense systems. Its control module core uses an STM32 series microcontroller and integrates a power supply module, a signal receiving module, a drive module, and a limit detection module. It supports two conventional integration methods, which can be switched via a DIP switch: ① switch signal interface, connected via a relay, adapted to the passive contact signals of traditional defense systems; ② CAN bus interface, adapted to the vehicle / shipboard bus system of modern armored vehicles / ships. After the existing defense system (such as radar, photoelectric detection equipment) detects a threat, it sends a high-level activation signal (duration ≥ 1s) to this device. After receiving the signal, the control module automatically executes the preset program: the first electric telescopic rod (8) is raised → the second electric telescopic rod (13) is extended → the support (6) is unfolded → the protective net (2) is tightened. After the threat is eliminated, the existing defense system sends a low-level shutdown signal, and the control module executes the reverse process. Taking the protection of the island superstructure of a ship as an example, this device is connected to the ship's combat management system (CMS) via a CAN bus. It receives the "threat level ≥ 2" activation signal and the "threat cleared" deactivation signal sent by the CMS. The timing of the actions can be adjusted through the parameter configuration interface of the CMS without the need for hardware modification of the existing system.

[0103] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A rapidly deployable low-altitude security device, characterized in that: Includes important areas (1), several protective net covers (2), several fixing devices (3), elastic telescopic support columns (5), and top support components (7); The elastic telescopic rod (5) is set at the center above the important area, and the fixing device (3) is set around the important area (1). The upper end of the protective net cover (2) is fixedly connected to the elastic telescopic support column (5), and the lower end is connected to the fixing device (3). The fixing device (3) is used to realize the quick fixing or recycling of the protective net cover (2). The elastic telescopic support column (5) is provided with a top support component (7), which is used to drive the protective net cover (2) to open or close synchronously.

2. The rapidly deployable low-altitude security device as described in claim 1, characterized in that: It also includes a fixed tube (4) and several support members (6). The fixed tube (4) is fixedly connected to the center position above the important area (1). An elastic telescopic support rod (5) is provided at the upper end of the fixed tube (4). The protective net cover (2) is evenly distributed around the fixed tube (4) as the center, and the fixing device (3) is evenly arranged around the important area (1) and evenly distributed around the center of the important area (1). The lower end of the protective net cover (2) is connected to a first connecting ring (201) via a connecting spring (202), and the first connecting ring (201) is connected to the fixing device (3) respectively. Several of the support members (6) are evenly distributed around the fixed tube (4). The upper end of the support member (6) is rotatably connected to the elastic telescopic support column (5), and the lower end is fixedly connected to the first connecting ring (201). A spraying device is provided on the support member (6). The fixing device (3) includes: a mounting base (301), a connecting component (302) is snapped into the middle of the mounting base (301), the mounting base (301) is provided with a locking block (303) for snapping into the connecting component (302), and the connecting component (302) cooperates with the first connecting ring (201).

3. The rapidly deployable low-altitude security device as described in claim 2, characterized in that: The upper part of the inner cavity of the fixed tube (4) is slidably provided with a first electric telescopic rod (8), the lower part of the first electric telescopic rod (8) is fixedly connected with a support plate (9), a support spring (10) is provided between the lower surface of the support plate (9) and the bottom of the inner cavity of the fixed tube (4), and a sleeve (11) is provided between the outer wall of the first electric telescopic rod (8) and the inner wall of the fixed tube (4). The protruding end of the first electric telescopic rod (8) extends out of the upper end of the fixed tube (4) and is fixedly connected to the lower end of the elastic telescopic support column (5) through the connecting sleeve (12). The lower part of the inner cavity of the elastic telescopic support column (5) is fixedly connected to the second electric telescopic rod (13). The protruding end of the second electric telescopic rod (13) cooperates with the top support assembly (7) to open the support member (6).

4. The rapidly deployable low-altitude security device as described in claim 3, characterized in that: The top support assembly (7) includes an inner ring sleeve (701) and an outer ring sleeve (702). The inner ring sleeve (701) is fixedly connected to the upper end of the second electric telescopic rod (13). The outer ring sleeve (702) is sleeved on the outer side wall of the elastic telescopic support column (5). The inner ring sleeve (701) and the outer ring sleeve (702) are fixedly connected by a connecting plate (703). The elastic telescopic support column (5) is provided with a moving groove (501) for avoiding the connecting plate (703). A plurality of first lugs (704) are fixedly connected to the outer side wall of the outer ring sleeve (702), and a plurality of second lugs (705) are respectively provided on the support members (6). A top support rod (706) is provided between the first lugs (704) and the second lugs (705), and the two ends of the top support rod (706) are rotatably connected to the first lugs (704) and the second lugs (705) respectively. As the second electric telescopic rod (13) extends or retracts, the top support assembly (7) drives the support member (6) to open or close.

5. The rapidly deployable low-altitude security device as described in claim 4, characterized in that: The connecting assembly (302) includes: a second connecting ring (3021), a connecting rod (3022) is fixedly connected to the lower part of the second connecting ring (3021), a snap-fit ​​seat (3023) is fixedly connected to the lower end of the connecting rod (3022), and a first connecting ring (201) cooperates with the second connecting ring (3021); An opening is provided on one side of the second connecting ring (3021), and a rotating shaft (3025) is provided at the upper part of the opening. The rotating shaft (3025) is rotatably connected to a rotating plate (3024). The lower end of the rotating plate (3024) abuts against the lower part of the opening, so that the rotating plate (3024) rotates inside the second connecting ring (3021). A magnetic block (3026) is provided at the lower part of the rotating plate (3024), and the magnetic block (3026) is magnetically connected to the lower part of the opening.

6. The rapidly deployable low-altitude security device as described in claim 5, characterized in that: The upper sides of the rotating plate (3024) are respectively provided with torsion springs, which cooperate with the upper part of the opening and the rotating plate (3024) to close the opening.

7. A rapidly deployable low-altitude security device as described in claim 6, characterized in that: The mounting base (301) has a mounting hole (307) in the middle, and the mounting hole (307) is adapted to the snap-fit ​​base (3023); There are two locking blocks (303), which are symmetrically distributed on both sides of the mounting hole (307). A sliding plate (304) is provided on the upper part of the mounting base (301). A sliding groove (3041) is formed between the sliding plate (304) and the mounting base (301). The locking blocks (303) are slidably connected in the sliding groove (3041). A baffle (305) is provided on the side of the sliding plate (304) away from the mounting hole (307). A return spring (306) is provided between the baffle (305) and the adjacent locking block (303).

8. The rapidly deployable low-altitude security device as described in claim 7, characterized in that: A limiting plate (310) is provided on the side of the slide plate (304) adjacent to the mounting hole (307).

9. A rapidly deployable low-altitude security device as described in claim 8, characterized in that: The lower part of the card holder (3023) is symmetrically provided with two first transition surfaces (3027), and the card block (303) is provided with a second transition surface (3031) that cooperates with the first transition surfaces (3027).

10. A rapidly deployable low-altitude security device as described in claim 9, characterized in that: The mounting base (301) is symmetrically provided with extension plates on both sides, and bolt holes (308) are provided on the extension plates. Several reinforcing plates (309) are provided between the extension plates and the mounting base (301).

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