Protection system and protection method for large dock gate

Abstract

The invention provides a protection system and method for a large dock gate. The protection system comprises a monitoring module, an interception module, an energy consumption module and a repair module. The monitoring module is arranged in a water area in front of a dock gate to monitor the water area in real time and identify underwater explosion shock waves; the interception module is arranged in a foundation in front of a dock gate and comprises a foundation groove formed in the foundation and a protective net contained in the foundation groove. When shock waves are monitored, the protective net pops up from the foundation groove and is unfolded, and the shock waves are buffered for the first time; the energy consumption module comprises a plurality of energy consumption units which are evenly laid on one side of the upstream face of the dock gate and conduct secondary buffering on shock waves. The repairing module comprises a displacement monitoring and compensating unit, the displacement monitoring unit monitors the straightness of a rack in the transmission mechanism in real time, and when the straightness of the rack is not smaller than a deviation threshold value, the displacement compensating unit generates compensating displacement for recovering the straightness of the rack. According to the scheme, the anti-explosion capacity of the dock gate is remarkably improved, and the service life is remarkably prolonged.

Description

Technical Field

[0001] This invention relates to the field of safety protection technology for hydraulic structures, and more specifically, to a protection system and method for a large dock gate. Background Technology

[0002] Dock gates are critical protective structures in large ports and shipbuilding / repair bases, and their integrity and reliability play an irreplaceable role in safeguarding important national strategic assets. In the context of modern asymmetric warfare, the risk of attacks on high-value port targets using underwater unmanned vehicles and smart mines is increasing. As fixed targets, dock gates are highly vulnerable to such attacks.

[0003] Existing dock gate designs are primarily aimed at withstanding hydrostatic pressure and wave loads. Their steel structures inherently possess vulnerability to the high-pressure, high-speed shock waves generated by near-field or contact explosions. Specifically, existing technologies suffer from the following problems:

[0004] The energy dissipation path is singular: traditional gates rely solely on the elastic-plastic deformation of their own structure to rigidly resist the explosive energy, lacking an effective energy absorption and dissipation mechanism, which leads to stress concentration and makes them prone to local tearing damage, resulting in catastrophic consequences.

[0005] Functional failure of the transmission mechanism: The opening and closing of the gate relies on a precise gear and rack transmission mechanism. Even if the deformation of the gate's main structure caused by an explosion does not reach the level of structural damage, the millimeter-level displacement is sufficient to cause misalignment and loss of straightness of the rack base, leading to misalignment and jamming of the gears and rack, thus rendering the gate unable to open and close. This situation of "structure intact, function lost" is fatal in wartime or emergency situations.

[0006] Slow response to protection upgrades: Traditional blast-resistant reinforcement measures, such as thickening steel plates and adding buttresses, are all permanent engineering modifications. They are not only costly and have long construction periods, affecting the normal use of the dock, but also cannot meet the emergency preparedness requirements for rapid and flexible deployment based on the threat level.

[0007] Therefore, in order to solve the above-mentioned problems in the existing technology, there is an urgent need to propose a new large dock gate protection system and explosion-proof protection method that can be quickly deployed, efficiently consume energy, and ensure the effectiveness of key transmission functions. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a protection system and method for large dock gates, so as to improve the blast resistance of dock gates, ensure the effectiveness of the key transmission mechanism of dock gates, and thus improve the service life of dock gates.

[0009] To address the aforementioned technical problems, embodiments of the present invention provide a protection system for large dock gates, comprising:

[0010] The monitoring module is installed in the water area within a preset range in front of the dock gate to monitor the water area within the preset range in real time and identify potential underwater explosion shock waves.

[0011] The interception module includes a foundation trench and a protective net. The foundation trench is set on the foundation in front of the dock gate. Before the interception module is activated, the protective net is stored in the foundation trench. When an underwater explosion shock wave is detected, one end of the protective net pops out from the foundation trench and unfolds along the height direction of the dock gate to buffer the underwater explosion shock wave.

[0012] The energy-consuming module includes multiple energy-consuming units, which are evenly distributed on the water-facing side of the dock gate to provide secondary buffering for the underwater explosion shock wave after it has been buffered by the interception module; and

[0013] The repair module, located in the transmission mechanism of the dock gate, includes a displacement monitoring unit and a displacement compensation unit. The displacement monitoring unit is used to monitor the straightness of the rack in the transmission mechanism in real time. The displacement compensation unit is used to generate a compensation displacement when the straightness of the rack is detected to be greater than or equal to a deviation threshold, so as to restore the straightness of the rack.

[0014] In one embodiment, the interception module further includes:

[0015] Multiple buffer capsules are evenly distributed in the mesh of the protective net, and each buffer capsule is filled with a shear-thickening fluid.

[0016] Pre-set tracks, symmetrically arranged on both sides of the foundation trench and along the height of the dock gate, are used to guide the deployment of the protective net; and

[0017] The power components are evenly distributed on two sides of the protective net along the height direction of the dock gate, and the other side of the power components is slidably connected to the preset track. Before the interception module is activated, the power components and the protective net are both stored in the foundation trench. When the underwater explosion shock wave is detected, the power components are activated and drive the protective net to pop out of the foundation trench and unfold along the preset track.

[0018] In one embodiment, the preset track includes:

[0019] Guide rails are symmetrically arranged on both sides of the foundation trench and fixedly connected to the foundation trench, and the guide rails are provided with protective sleeves; and

[0020] A float, disposed on top of the guide rail and rotatably connected to the top of the guide rail, is used to position the guide rail and provide tension; and / or

[0021] The power component is a gas injector, which includes:

[0022] A gas cylinder, slidably connected to the preset track on one side, contains high-pressure gas; and

[0023] An electromagnetic valve is installed on the gas supply port of the gas cylinder. When an underwater explosion shock wave is detected, the electromagnetic valve opens to release high-pressure gas from the gas cylinder. Under the action of the high-pressure gas, the protective net is ejected from the foundation trench and deployed.

[0024] In one embodiment, the protective net is woven from aramid fibers; and / or

[0025] The buffer capsule is made of a polymer film; and / or

[0026] The shear-thickening fluid is composed of silica nanoparticles dispersed in a polyethylene glycol-based fluid.

[0027] In one embodiment, each energy-consuming unit includes:

[0028] A connecting frame is disposed on the water-facing side of the dock gate, and the side of the connecting frame is fixedly connected to the dock gate. A connecting slot is provided on the connecting frame.

[0029] A composite structural layer is disposed in the connecting slot and forms a mortise and tenon structure with the connecting frame.

[0030] In one embodiment, two adjacent energy-consuming units are spliced ​​together by quick-connect components. These quick-connect components are disposed on the connecting frame, and the connecting frame has splicing slots on opposite sides for splicing adjacent energy-consuming units. Furthermore, quick-connect components are provided on both opposite sides of the connecting frame. Each quick-connect component includes:

[0031] A connector is disposed in a mounting hole on the connecting frame and can move up and down along the mounting hole;

[0032] An elastic element, fitted onto one end of the connector and located within the mounting hole; and

[0033] An operating handle is attached at one end to one end of the connector plug and located below the elastic element, and at the other end passes through the connecting frame. The connecting frame has a handle slot for the operating handle to move up and down. Pulling the operating handle up or down moves it along the handle slot, causing the other end of the connector plug to insert into the mounting hole of the assembly slot on an adjacent connecting frame, and the connector plug is secured by the elastic force of the elastic element; and / or

[0034] The composite structure layer includes:

[0035] The first buffer layer is disposed on the water-facing side of the dock gate, and both sides of the first buffer layer are engaged with the connecting slots.

[0036] The first rigid fracture layer is disposed between the water-facing side of the dock gate and the first buffer layer, and both sides of the first rigid fracture layer are engaged with the connecting slots.

[0037] A second buffer layer is disposed between the water-facing side of the dock gate and the first rigid fracturing layer, and both sides of the second buffer layer are engaged with the connecting slots; and

[0038] The second rigid fracture layer is disposed between the water-facing side of the dock gate and the second buffer layer, and both sides of the second rigid fracture layer are engaged with the connecting slot.

[0039] In one embodiment, both the first buffer layer and the second buffer layer have honeycomb holes, the diameter of the honeycomb holes in the first buffer layer is larger than the diameter of the honeycomb holes in the second buffer layer, and the honeycomb holes in the first buffer layer and the honeycomb holes in the second buffer layer are staggered; and / or

[0040] Both the first rigid fracture layer and the second rigid fracture layer have multiple conical channels, and the size of the conical channel on the first rigid fracture layer is smaller than the size of the conical channel on the second rigid fracture layer.

[0041] In one embodiment, the displacement monitoring unit includes multiple fiber Bragg grating sensors, which are uniformly arranged along a rack base in the transmission mechanism; and / or

[0042] The displacement compensation unit includes multiple shape memory alloy actuators, which are evenly arranged inside the rack.

[0043] In one embodiment, each of the shape memory alloy actuators includes:

[0044] Multiple shape memory alloy springs are symmetrically and evenly arranged in different directions inside the rack;

[0045] A power supply unit, disposed at one end of the shape memory alloy spring and electrically connected to the shape memory alloy spring, is used to supply power to the shape memory alloy spring; and

[0046] The motion probe is fixed at one end to the other end of the shape memory alloy spring, and the other end contacts the inner wall of the rack in different directions. When the straightness of the rack is detected to be greater than or equal to the deviation threshold, the energizing unit energizes and heats the shape memory alloy spring. The shape memory alloy spring deforms due to heat to generate a driving force that pushes the motion probe to move, and the movement of the motion probe generates a pushing force to correct the deformation of the rack.

[0047] In one embodiment, the protection system for the large dock gate further includes:

[0048] An interference module is installed on the monitoring module. When an underwater explosion shock wave is detected, the interference module is activated and emits an interference signal to actively interfere with the threat source that will cause the underwater explosion.

[0049] Embodiments of the present invention also provide a protection method for a protection system based on any of the above embodiments of a large dock gate, comprising the following steps:

[0050] Threat warning: The monitoring module performs real-time monitoring of the water area within a preset range and identifies potential underwater explosion shock waves;

[0051] Active interception: When an underwater explosion shock wave is detected, the interception module is activated. One end of the protective net in the interception module pops out from the foundation trench and unfolds along the height of the dock gate to buffer the underwater explosion shock wave.

[0052] Passive energy dissipation: The underwater explosion shock wave, after being buffered by the interception module, is buffered a second time through multiple energy dissipation units in the energy dissipation module;

[0053] Self-repair of key mechanisms: The straightness of the rack in the transmission mechanism of the dock lock is monitored in real time by the displacement monitoring unit in the repair module. When the straightness of the rack is detected to be greater than or equal to the deviation threshold, the displacement compensation unit in the repair module generates a compensation displacement to restore the straightness of the rack.

[0054] The above-described solution of the present invention has at least the following beneficial effects:

[0055] (1) The protection system of the present invention forms a closed-loop protection system integrating early warning, interception, multi-level energy consumption and self-repair through four links: monitoring module for monitoring and early warning, interception module for active flexible interception, energy consumption module for passive rigid and tough energy consumption, and repair module for self-repair of key transmission mechanism. This system achieves multi-level and in-depth energy dissipation and greatly improves the overall survivability of dock gate.

[0056] (2) The protective system of the present invention introduces an adaptive repair module for the key transmission mechanism of the dock gate. When the shock wave generated by the underwater explosion causes the main structure of the dock gate to deform, the repair module can quickly restore the straightness of the rack in the transmission mechanism to ensure that the opening and closing function of the dock gate is normal, thereby solving the fatal problem of "the structure is still there, but the function is lost", which has great practical significance.

[0057] (3) The protective net of the interception module in the protection system of the present invention can be deployed instantly. The energy-consuming unit in the energy-consuming module adopts a modular design and quick connection components, which makes installation, upgrading or replacement extremely convenient. It can be quickly deployed according to the threat level and mission requirements, meeting the requirements of emergency preparedness and effectively overcoming the drawbacks of slow response of traditional reinforcement methods.

[0058] It should be understood that the implementation of any embodiment of the present invention does not mean that it will simultaneously possess or achieve multiple or all of the above-mentioned beneficial effects. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the overall structure of the protection system for a large dock gate provided in an embodiment of the present invention;

[0060] Figure 2 This is a schematic diagram of the overall structure of the interception module provided in an optional embodiment of the present invention;

[0061] Figure 3 This is a schematic diagram of the overall structure of the energy-consuming unit provided in an optional embodiment of the present invention;

[0062] Figure 4 This is a front view of multiple energy-consuming units spliced ​​together according to an optional embodiment of the present invention;

[0063] Figure 5 This is a front perspective view of multiple energy-consuming units spliced ​​together according to an optional embodiment of the present invention;

[0064] Figure 6 This is a rear view of multiple energy-consuming units spliced ​​together according to an optional embodiment of the present invention;

[0065] Figure 7 This is a rear perspective view of multiple energy-consuming units spliced ​​together according to an optional embodiment of the present invention;

[0066] Figure 8 This is a partial structural diagram of the connection point of the energy-consuming unit provided in an optional embodiment of the present invention;

[0067] Figure 9 This is a schematic diagram of the overall structure of the connecting frame provided in an optional embodiment of the present invention;

[0068] Figure 10 This is a schematic diagram of the overall structure of the first rigid fracture layer and the second rigid fracture layer provided in an optional embodiment of the present invention;

[0069] Figure 11 This is a schematic diagram of the overall structure of the repair module provided in an optional embodiment of the present invention;

[0070] Figure 12 This is a schematic diagram of the overall structure of a shape memory alloy actuator provided in an optional embodiment of the present invention.

[0071] Explanation of icon numbers:

[0072] 101. Monitoring module; 102. Interference module;

[0073] 2. Interception module; 201. Foundation; 202. Foundation trench; 203. Protective net; 204. Buffer capsule; 205. Preset track; 206. Column-type pontoon; 207. Steel strand; 208. Protective sleeve; 209. Gas ejector;

[0074] 3. Energy-consuming module; 300. Energy-consuming unit; 301. Connecting frame; 3011. First connecting plate; 3012. Second connecting plate; 3013. Third connecting plate; 302. First buffer layer; 303. First rigid crushing layer; 304. Second buffer layer; 305. Second rigid crushing layer; 306. Connecting slot; 307. Connecting plug; 308. Elastic element; 309. Operating handle; 310. Splicing groove; 311. Bolt hole; 312. Conical channel; 313. Rigid crushing layer slot; 314. Mounting hole; 315. Handle slot;

[0075] 4. Transmission mechanism; 401. Fiber optic grating sensor; 402. Rack base; 403. Rack; 404. Spur gear; 405. Gear; 406. Wiring port; 410. Shape memory alloy actuator; 411. Sleeve; 412. Power supply unit; 413. Shape memory alloy spring; 414. Motion probe; 415. Trapezoidal plate. Detailed Implementation

[0076] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0077] In the description of this invention, it should be understood that the terms "comprising / including," "consisting of," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements includes not only those elements but may also include, where necessary, other elements not expressly listed, or elements inherent to such a product, apparatus, process, or method. Without further limitation, an element defined by the phrases "comprising / including," "consisting of," does not exclude the presence of additional identical elements in the product, apparatus, process, or method that includes said element.

[0078] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of the present invention.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0080] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0081] like Figure 1As shown, an embodiment of the present invention provides a protection system for a large dock gate, which may include a monitoring module 101, an interception module 2, an energy dissipation module 3, and a repair module. The monitoring module 101 is installed in the water area within a preset range in front of the dock gate, and is used to monitor the water area within the preset range in real time and identify potential underwater explosion shock waves.

[0082] See Figure 1 and Figure 2 The interception module 2 is set in the foundation 201 in front of the dock gate and is located between the monitoring module 101 and the dock gate. The interception module 2 may include a foundation trench 202 and a protective net 203. The foundation trench 202 is set on the foundation 201. Before the interception module 2 is activated, the protective net 203 is stored in the foundation trench 202. When an underwater explosion shock wave is detected, one end of the protective net 203 pops out from the foundation trench 202 and unfolds along the height direction of the dock gate to buffer the underwater explosion shock wave.

[0083] See Figure 3 The energy-consuming module 3 includes multiple energy-consuming units 300, which are evenly laid on the water-facing side of the dock gate to provide secondary buffering for the underwater explosion shock wave after being buffered by the interception module 2.

[0084] See Figure 11 The repair module is installed in the transmission mechanism 4 of the dock gate, including a displacement monitoring unit and a displacement compensation unit. The displacement monitoring unit is used to monitor the straightness of the rack 403 in the transmission mechanism 4 in real time. The displacement compensation unit is used to generate compensation displacement when the straightness of the rack 403 is detected to be greater than or equal to the deviation threshold, so as to restore the straightness of the rack 403.

[0085] In this embodiment, the monitoring module 101 serves as an early warning mechanism in the system and can be deployed in the waters within a preset range in front of the dock gate. Here, multiple monitoring modules 101 can be set up, and multiple monitoring modules 101 can form a monitoring array. The monitoring array is preferably arranged in a fan shape in the key waterway and the bottom of the waters within a range of 500-1000 meters in front of the dock gate.

[0086] Preferably, the monitoring module 101 can be an active or passive sonar detector. The monitoring array composed of these active or passive sonar detectors can continuously receive and analyze underwater acoustic signals and perform intelligent identification using a target feature database built into the sonar detectors. Here, the target feature database can include the acoustic and magnetic characteristics of common underwater unmanned vehicles, smart mines, and other threatening targets. When the matching degree between the suspicious targets analyzed by multiple monitoring modules 101 and the features in the target feature database is higher than 95%, the monitoring module 101 can determine it as a potential threat and immediately issue a high-level warning to the central control room via an encrypted channel.

[0087] Interception module 2, as the active flexible interception mechanism in the system, is installed in the foundation 201 in front of the dock gate's water-facing side. A signal transceiver can be installed within interception module 2, which is connected to the central control room. When the central control room receives a high-level warning from monitoring module 2, it simultaneously sends a response signal to interception module 2. At this time, interception module 2 activates, releasing and deploying protective netting 203 from the foundation trench 202, forming the first flexible interception barrier to buffer and absorb the shock wave's energy. Here, protective netting 203 is a high-strength, high-toughness, seawater-corrosion-resistant flexible protective net, with its other end fixed in the foundation trench 202. In one feasible example, protective netting 203 can be woven from aramid fibers.

[0088] It should be understood that, in the non-working state, the protective net 203 of the interception module 2 is folded and stored in the foundation trench 202. Preferably, the foundation trench 202 can be made of concrete. More preferably, the top of the foundation trench 202 is provided with a cover plate, which can be slidably connected to the top of the foundation trench 202 and can be opened or closed by an anti-corrosion drive mechanism (the signal transceiver is set in the drive mechanism, which can be a combination of existing drive motors, guide rails, guide wheels, shafts, etc.) to protect the internal components from daily environmental corrosion in the non-working state. The energy dissipation module 3, as a passive rigid-tough energy dissipation mechanism in the system, is fixed on the water-facing side of the dock gate. Each energy dissipation unit 300 in the energy dissipation module 3 is a gradient composite energy dissipation unit, that is, each energy dissipation unit 300 can perform multi-level energy dissipation in sequence. Multiple energy dissipation units 300 are evenly distributed to form a second core buffer barrier to perform a second buffering and energy absorption on the shock wave after it has been buffered by the interception module 2.

[0089] The repair module, as an adaptive compensation mechanism in the system, is installed in the transmission mechanism of the dock gate to monitor the straightness of the rack 403 in the transmission mechanism of the dock gate in real time. When the straightness of the rack 403 exceeds the limit due to the impact of the shock wave, the displacement compensation unit generates a compensation displacement to adaptively compensate the transmission rack deformed by the impact and restore its straightness.

[0090] The protection system provided in the above embodiments integrates early warning, flexible interception, multi-level energy consumption and functional self-repair, which solves the problems of single protection methods and easy functional failure of transmission mechanism in traditional protection systems. Moreover, the protection system can be deployed quickly, which significantly improves the survivability and functional integrity of dock gates.

[0091] In an optional embodiment of the present invention, the protection system of the large dock gate may further include an interference module 102, which is disposed on the monitoring module 101. When an underwater explosion shock wave is detected, the interference module 102 is activated and emits an interference signal to actively interfere with the threat source that causes the underwater explosion.

[0092] See Figure 1 The jamming module 102 can be integrated with the monitoring module 101 and can communicate with the monitoring module 101 or the central control room. After receiving a potential underwater explosion threat signal identified by the monitoring module 101, the jamming module 102 starts and emits a high-frequency jamming signal. This high-frequency jamming signal can perform wide-spectrum, high-power blocking jamming on common underwater communication and remote control frequency bands to cut off the communication between the threat source and its rear control terminal, so that it cannot receive new instructions or be remotely detonated, thus achieving the effect of active defense. Preferably, the jamming module 102 can be an electromagnetic pulse transmitting device.

[0093] See Figure 2 In an optional embodiment of the present invention, the interception module 2 may further include a plurality of buffer capsules 204, a preset track 205, and a power component. The plurality of buffer capsules 204 are evenly distributed within the grid of the protective net 203, and each buffer capsule 204 is filled with a shear-thickening fluid. Here, the plurality of buffer capsules 204 are evenly distributed within the diamond-shaped grid of the protective net 203, preferably bound together with aramid fiber threads into a capsule-like or spherical structure. The buffer capsules 204 may be made of a flexible and extremely tough polymer film, and each buffer capsule 204 is filled with a shear-thickening fluid, further enhancing the buffering and energy absorption effect of the protective net 203.

[0094] In an optional embodiment of the present invention, the shear-thickening fluid may be composed of silica nanoparticles dispersed in a polyethylene glycol-based fluid; preferably, the silica nanoparticles may be spherical particles with an average particle size of 100-200 nanometers, and the mass fraction of the silica nanoparticles is 20%-40%; in an achievable example, the silica nanoparticles are uniformly dispersed in a polyethylene glycol-based fluid with a molecular weight of 400-600 at a mass fraction of 35%.

[0095] In normal water flow environments with low shear rates, shear-thickening fluids exhibit low viscosity liquids. However, when subjected to high shear rates from explosive shock waves, dispersed silica nanoparticles rapidly form hydrogen bond clusters, causing the fluid viscosity to jump by several orders of magnitude within microseconds. Macroscopically, this manifests as a liquid-solid phase transition, which allows for extremely effective absorption and dissipation of shock wave energy.

[0096] Here, the pre-set tracks 205 are symmetrically arranged on both sides of the foundation trench 202 and along the height direction of the dock gate, to guide the deployment of the protective net 203.

[0097] Continue reading Figure 2 In an optional embodiment of the present invention, the preset track 205 may include a guide rail and a float. The guide rail is symmetrically arranged on both sides of the foundation trench 202 and fixedly connected to the foundation trench 202, and a protective sleeve is provided on the outside of the guide rail to protect it from daily environmental corrosion. The float is disposed on the top of the guide rail and rotatably connected to the top of the guide rail, used for positioning the guide rail and providing tension.

[0098] The preset track 205 is composed of at least two or more guide rails symmetrically arranged. Preferably, the guide rail can be a steel strand 207, and the steel strand 207 is covered with a corrosion-resistant protective sleeve 208, such as a cylindrical protective sleeve, made of polytetrafluoroethylene. The bottom of the steel strand 207 is anchored in the foundation 201 and located on both sides of the foundation trench 202. The top of the steel strand 207 can be connected to the float via a ball joint connector. Here, the float can be a column-type buoy 206. The ball joint connector and the column-type buoy 206 ensure that the steel strand 207 maintains effective tension at different tide levels.

[0099] Here, the power components are evenly distributed on two sides of the protective net 203 along the height of the dock gate, and the other side of the power components is slidably connected to the preset track 205, specifically, it can be slidably connected to the protective sleeve 208 outside the steel strand 207. Before the interception module 2 is activated, both the power components and the protective net 203 are housed in the foundation trench 202. When the underwater explosion shock wave is detected, the power components are activated and drive the protective net 203 to pop out of the foundation trench 202 and unfold along the preset track 205 to form the first flexible interception barrier, which buffers and absorbs the energy of the explosion shock wave for the first time.

[0100] like Figure 2 As shown, in an optional embodiment of the present invention, the power component is a gas injector 209, which specifically includes a gas supply cylinder and a solenoid valve. Here, multiple gas supply cylinders are evenly distributed on both sides of the protective net 203. One end of the gas supply cylinder is slidably connected to a preset track 205, and the other end of the gas supply cylinder is fixedly connected to the side of the protective net 203. High-pressure gas is provided inside the gas supply cylinder. The solenoid valve is located at the gas supply port of the gas supply cylinder. When an underwater explosion shock wave is detected, the solenoid valve opens to release high-pressure gas from the gas supply cylinder. Under the action of the high-pressure gas, the protective net 203 is ejected from the foundation trench 202 and unfolded.

[0101] Here, the solenoid valve can communicate with the central control room. When the solenoid valve and the drive mechanism in the top cover of the foundation trench 202 receive the response signal sent by the central control room, the drive mechanism controls the cover to open. The solenoid valve can open within 5 milliseconds to release high-pressure gas. Under the impact of the high-pressure gas, one end of the protective net 203 pops out from the foundation trench 202. At the same time, under the impact of the high-pressure gas, the gas cylinder moves upward along the steel strand 207 to make the protective net 203 unfold.

[0102] The entire deployment process of the aforementioned protective net 203 can be completed within 1-2 seconds, ultimately forming a flexible barrier that can effectively intercept shock waves approximately 10-15 meters in front of the dock gate. It should be noted that the opening degree of the solenoid valve, the pressure of the high-pressure gas in the gas cylinder, and the volume of the high-pressure gas can all be set according to the protection requirements to ensure the effectiveness of the deployment of the protective net 203, thereby ensuring the effectiveness of the interception module 2.

[0103] See Figure 3 In an optional embodiment of the present invention, each energy-consuming unit 300 may include a connecting frame 301 and a composite structural layer. The connecting frame 301 is disposed on the water-facing side of the dock gate, and its side is fixedly connected to the dock gate. A connecting slot 306 is provided on the connecting frame 301. The composite structural layer is disposed in the connecting slot 306 and forms a mortise and tenon structure with the connecting frame 301.

[0104] See Figure 9 Here, the connecting frame 301 includes a first connecting plate 3011, a second connecting plate 3012, and a third connecting plate 3013. The first connecting plate 3011 and the third connecting plate 3013 are fixed to the second connecting plate 3012 at intervals to form a rigid connecting frame. Preferably, the three are screwed together by bolts passing through bolt holes 311. Connecting slots 306, matching the shape of the two sides of the composite structure layer, are provided on opposite sides of the first connecting plate 3011 and the third connecting plate. The connecting slots 306 on both sides are positioned opposite each other to interlock with the two sides of the composite structure layer, forming a mortise and tenon structure to improve the stability of the connection.

[0105] Here, the composite structure layer is a gradient composite energy dissipation structure layer. When encountering a shock wave, the multi-layer structure of the composite structure layer can buffer and dissipate the shock wave in sequence, so as to achieve efficient dissipation of shock wave energy in stages and multiple modes, and reduce the damage of shock wave to dock gate.

[0106] See Figures 3 to 9Here, two adjacent energy-consuming units 300 can be spliced ​​together by a connecting frame 301. In an optional embodiment of the present invention, two adjacent energy-consuming units 300 can be spliced ​​together by a quick-connecting component. The quick-connecting component is disposed on the connecting frame 301. Splicing slots 310 for splicing two adjacent energy-consuming units 300 are opened on opposite sides of the connecting frame 301, and quick-connecting components are provided on opposite sides of the connecting frame 301.

[0107] Here, the splicing slots 310 can be respectively opened on the first connecting plate 3011 and the third connecting plate 3013, and the overall shape of the first connecting plate 3011 after opening the splicing slot is complementary to the overall shape of the third connecting plate 3013 after opening the splicing slot (that is, the two can be spliced ​​together); here, both the first connecting plate 3011 and the third connecting plate 3013 are provided with quick connection components, and the quick connection components on the corresponding connecting plates are located outside the splicing slots 310 on the connecting plates, so that the connecting frames adjacent to the current connecting frame 301 can be quickly spliced ​​together through the quick connection components and the splicing slots 310.

[0108] Continue reading Figures 3 to 9 In an optional embodiment of the present invention, each quick-connect component may include a connector 307, an elastic element 308, and an operating handle 309; here, the elastic element 308 is preferably a spring. The connector 307 is disposed in a mounting hole 314 on the connecting frame 301 and can move up and down along the mounting hole 314 (both the first connecting plate 3011 and the third connecting plate 3013 have mounting holes 314, the size and shape of which match the size and shape of the connector 307). The elastic element 308 is sleeved on one end of the connector 307 and located in the mounting hole 314; one end of the operating handle 309 is installed on one end of the connector 307 and located below the elastic element 308, and the other end passes through the connecting frame 301. The connecting frame 301 has a handle slot 315 for the operating handle 309 to move up and down (the first connecting plate 3011 and the third connecting plate 3013 both have handle slots 315). Preferably, the size of the handle slot 315 matches the operating handle 309. By pulling up or down the operating handle 309, it moves along the handle slot 315 and drives the other end of the connector 307 to be inserted into the mounting hole 314 of the assembly slot 310 on the adjacent connecting frame 301, and the connector 307 is fixed by the elastic force of the elastic element 308.

[0109] Continue reading Figures 3 to 9When multiple energy-consuming units 300 need to be combined into a large-area protective array (i.e., energy-consuming module 3), the multiple energy-consuming units can be spliced ​​by simply operating the quick-connect components on the connecting frame 301 of two adjacent energy-consuming units 300. Specifically, by pulling up or down the operating handle 309, the elastic element 308 is compressed. Under the elastic force of the elastic element 308, the connecting plug 307 is aligned with the mounting hole 314, and under the elastic force of the elastic element 308, the connecting plug 307 is retracted and released to achieve quick locking between the energy-consuming units 300. Finally, the assembled energy-consuming module 3 is connected and fixed to the dock gate through the bolt holes reserved in the dock gate using high-strength bolts.

[0110] See Figure 3 and Figure 8 In an optional embodiment of the present invention, the composite structural layer may include a first buffer layer 302, a first rigid breaking layer 303, a second buffer layer 304 and a second rigid breaking layer 305, and the four structural layers are stacked sequentially from the water-facing side to the water-repelling side.

[0111] The first buffer layer 302 is disposed on the water-facing side of the dock gate, and both sides of the first buffer layer 302 are engaged with the connecting slots 306. A first rigid fracturing layer 303 is disposed between the water-facing side of the dock gate and the first buffer layer 302, and both sides of the first rigid fracturing layer 303 are engaged with the connecting slots 306; preferably, rigid fracturing layer slots 313 matching the connecting slots 306 are provided on both sides of the first rigid fracturing layer 303. A second buffer layer 304 is disposed between the water-facing side of the dock gate and the first rigid fracturing layer 303, and both sides of the second buffer layer 304 are engaged with the connecting slots 306. A second rigid fracturing layer 305 is disposed between the water-facing side of the dock gate and the second buffer layer 304, and both sides of the second rigid fracturing layer 305 are engaged with the connecting slots 306; preferably, rigid fracturing layer slots 313 matching the connecting slots 306 are provided on both sides of the second rigid fracturing layer 305. By stacking four structural layers sequentially from the water-facing side to the back-facing side, a gradient composite structure is formed to achieve multi-level, deep energy dissipation. It should be noted that the number of layers in this composite structure is not limited to four; more layers can be added as needed.

[0112] Here, the thickness of the first buffer layer 302 and the second buffer layer 304 ranges from 5cm to 10cm. The first buffer layer 302 is preferably made of Q345B steel with high yield strength, and the second buffer layer 304 is preferably made of Q235B steel with relatively low yield strength, so as to facilitate energy absorption by gradient plastic deformation. The first rigid fracture layer 303 and the second rigid fracture layer 305 are preferably made of high-strength 603 military armor steel.

[0113] See Figure 3 In an optional embodiment of the present invention, both the first buffer layer 302 and the second buffer layer 304 are provided with honeycomb holes. The diameter of the honeycomb holes on the first buffer layer 302 is larger than that on the second buffer layer 304, and the honeycomb holes on the first buffer layer 302 and the honeycomb holes on the second buffer layer 304 are arranged in a staggered manner. Here, the first buffer layer 302 serves as the first buffer structure layer, mainly for preliminary buffering of the shock wave. Preferably, the honeycomb hole diameter of the first buffer layer 302 can be 10 mm. When the shock wave reaches the surface of the first buffer layer 302, the honeycomb holes on this layer can broaden the waveform of the shock wave on the time axis.

[0114] See Figure 10 In an optional embodiment of the present invention, both the first rigid fracture layer 303 and the second rigid fracture layer 305 are provided with a plurality of conical channels 312. Preferably, the conical channel 312 can be a funnel-shaped opening; and the size of the conical channel 312 on the first rigid fracture layer 303 is smaller than the size of the conical channel 312 on the second rigid fracture layer 305.

[0115] In this embodiment, the cone angle of the conical channel 312 on the first rigid fracturing layer 303 and the second rigid fracturing layer 305 ranges from 30 to 45 degrees. In a specific example, the cone angle of the conical channel 312 on the first rigid fracturing layer 303 is 30 degrees, and the diameter of the end hole on the water-facing side of the conical channel 312 on this layer is 5 cm, and the diameter of the end hole on the water-repellent side is 10 cm. When the shock wave reaches this layer after being buffered by the first buffer layer 302, the shock wave front first passes through the small-diameter end face of the conical channel 312 on this layer, and the complete wave front of the shock wave is effectively divided and broken. The high-speed, high-pressure fluid caused by the shock wave is then forced to expand rapidly within the expanding conical channel 312, resulting in a significant reduction in both the pressure and velocity of the high-speed, high-pressure fluid. During this process, the inner wall of the conical channel 312 on the first rigid fracturing layer 303 induces strong turbulence and eddies, thereby efficiently converting the macroscopic, directional kinetic energy of the shock wave into microscopic, disordered thermal energy. At the same time, the wall of the conical channel 312 can also decompose the axial force of the shock wave radially, further dispersing the energy and significantly reducing the peak pressure and total impulse acting on the rear structure.

[0116] A second buffer layer 304 is provided after the first rigid fracture layer 303. Preferably, the honeycomb aperture of the second buffer layer 304 can be 8 mm. The honeycomb holes on the second buffer layer 304 are staggered with the honeycomb holes on the first buffer layer 302. This design makes it easier for the second buffer layer 304 to undergo large-scale plastic deformation when the shock wave weakened by the first buffer layer 302 and the first rigid fracture layer 303 reaches the second buffer layer 304, thereby absorbing a large amount of impact energy in the form of structural yielding.

[0117] Furthermore, a second rigid fragmentation layer 305 is provided after the second buffer layer 304; here, the cone angle of the conical channel 312 on the second rigid fragmentation layer 305 is also preferably 30 degrees, but the end hole size of the conical channel 312 is different; the end hole diameter of the conical channel 312 on the water-facing side of the second rigid fragmentation layer 305 is 10cm, and the end hole diameter on the back side is 15cm, in order to resist and break any residual shock wave or high-speed fragments that may penetrate the previous layers of protection.

[0118] Since the core task of the first rigid fracturing layer 303 is to deal with the shock wave after the first buffer layer 302 and the large-sized high-speed fragments that may be generated, the orifice size design of the conical channel 312 on the first rigid fracturing layer 303 is more inclined to "small-diameter strong fracturing" so as to achieve the initial fracturing and energy dissipation (hard interception) of the large kinetic energy threat through the narrow channel; while the end orifice of the conical channel 312 on the water-facing side of the second rigid fracturing layer 305 is aligned with the end orifice of the conical channel 312 on the back side of the first rigid fracturing layer 305. By setting the size of the conical channel 312 on the second rigid fracturing layer 305 to be larger than the size of the conical channel 312 on the first rigid fracturing layer 303, the residual shock wave and small fragments after being buffered by the second buffer layer 304 collide back and forth in the conical tube expanding in the second rigid fracturing layer 305 and slowly dissipate energy (secondary dissipation + complete fracturing). In this way, the impact force transmitted to the main body of the dock gate is more gradual, thereby reducing the damage to the dock gate.

[0119] Through the aforementioned gradient functional design of "buffering-fracture-re-buffering-re-fracture," the energy of the blast shock wave is dissipated efficiently in stages and in multiple modes. The entire energy dissipation process transforms the concentrated, extremely destructive short-term impact load into an equivalent load with a longer duration and lower peak intensity, which is ultimately borne by the main structure of the dock gate.

[0120] Based on the above structures, the energy-consuming module 3 can be highly modularized and easily assembled; see reference Figures 3 to 9 During assembly, the individual energy-consuming unit 300 is first assembled, which may include the following steps:

[0121] Step 11: High-strength bolts are used to connect the first connecting plate 3011, the third connecting plate 3013 and the second connecting plate 3012 through bolt holes 311 to construct the rigid connection frame 301 of the energy dissipation unit 300.

[0122] Step 12: Following the order of stacking from the water-facing side to the backwater side, align the first buffer layer 302, the first rigid breaking layer 303, the second buffer layer 304, and the second rigid breaking layer 305 in a predetermined order and slide them into the slots 306 opened on the inner sides of the first connecting plate 3011 and the third connecting plate 3013 from top to bottom, and fix each functional structure layer by sliding and engaging.

[0123] Step 13: Insert quick-connect components into the mounting holes 314 of the first connecting plate 3011 and the third connecting plate 3013, that is, put the elastic element 308 and the connector 307 into the mounting holes 314 in sequence, and then screw one end of the operating handle 309 through the handle slot 315 and fix it to one end of the connector 307.

[0124] Step 14: By pulling up or down the operating handle 309 in the current connecting frame 301, the operating handle 309 drives the elastic element 308 to retract the connecting plug 307, and assembles it into the mounting hole 314 corresponding to the first connecting plate 3011 or the third connecting plate 3013 of the connecting frame 301 adjacent to the current connecting frame 301, thereby completing the assembly of multiple energy-consuming units 300. After the multiple energy-consuming units 300 are assembled to form the overall energy-consuming module 3, the connecting frames in the energy-consuming units 300 on the side of the overall energy-consuming module 3 are screwed and fixed to the dock gate.

[0125] It should be noted that all components of the energy dissipation unit 300 can be prefabricated in the factory, making the installation process efficient and requiring no complex tools. Furthermore, if one or more energy dissipation units are damaged, they can be quickly replaced to rapidly restore their initial protective and energy dissipation effects. The dimensions of the energy dissipation unit 300 can be designed according to the dimensions of the dock gate.

[0126] See Figure 11 In an optional embodiment of the present invention, the displacement monitoring unit may include multiple fiber Bragg grating sensors 401, which are uniformly arranged along the rack base 402 in the transmission mechanism 4. The fiber Bragg grating sensors 401 are chosen as the displacement monitoring unit because they possess extremely high sensitivity to micro-strain, and as optical elements, they are completely immune to electromagnetic interference generated by the operation of large electromechanical equipment, ensuring the stability and reliability of the monitoring signal.

[0127] Here, multiple sensors with different center wavelengths can be multiplexed on a single optical fiber, greatly simplifying field wiring. During continuous monitoring, a broadband beam of light is directed to the sensor array via the optical fiber, and each fiber Bragg grating sensor 401 reflects only its specific wavelength of light. When any minute deformation occurs in the rack base 402 due to a change in the straightness of the rack 403, the strain transmitted to the fiber Bragg grating sensor 401 will cause a change in its grating period, resulting in a wavelength shift in the reflected wavelength that is precisely linearly related to the strain, thereby accurately capturing minute changes in the straightness of the rack 403.

[0128] Specifically, the demodulator in the fiber optic grating sensor 401 can capture and demodulate the wavelength drift of each sensor in real time at a frequency in the kHz range, converting it into a digital strain data stream and transmitting it to the central control room. The algorithm program in the central control room fits the dynamic deformation curve of the entire rack 403 in real time based on the real-time data and spatial position of each sensor. This dynamic deformation curve is continuously compared with the ideal straight-line reference stored in the central control room. Once the calculated local deviation or overall straightness error exceeds a preset deviation threshold, the central control room determines that the transmission mechanism is at risk of functional failure and immediately activates the displacement compensation unit to perform displacement compensation to restore the straightness of the rack 403.

[0129] In an optional embodiment of the present invention, the displacement compensation unit may include a plurality of shape memory alloy actuators 410, which are uniformly arranged inside the rack 403 to adjust the straightness of the rack 403 by generating a compensation displacement.

[0130] It should be understood that when the displacement compensation unit is activated in the central control room, the central control room does not simply adjust the out-of-limit points on the rack 403 in isolation, but rather runs a global optimization algorithm based on the complete dynamic deformation curve. This global optimization algorithm can quickly solve for an optimal compensation scheme, that is, accurately calculate which shape memory alloy actuators 410 inside the rack 403 need to be activated, and the displacement vector required by each shape memory alloy actuator 410. This allows the corresponding shape memory alloy actuators 410 at the corresponding positions to perform corresponding actions in the corresponding directions and generate corresponding compensation displacements, thereby automatically restoring the straightness deviation of the rack 403 caused by impact deformation. Here, the displacement vector calculated by the central control room can be converted into a series of precise pulse width modulation control signals and sent to the target shape memory alloy actuator 410.

[0131] See Figure 12In an optional embodiment of the present invention, each shape memory alloy actuator 410 may include multiple shape memory alloy springs 413, an energizing unit 412, and a motion probe 414. The multiple shape memory alloy springs 413 are symmetrically and uniformly arranged in different directions inside the rack 403; the energizing unit 412 is disposed at one end of the shape memory alloy spring 413 and electrically connected to the shape memory alloy spring 413, for supplying power to the shape memory alloy spring 413; one end of the motion probe 414 is fixed to the other end of the shape memory alloy spring 413, and the other end contacts the inner wall of the rack 403 in different directions; when the straightness of the rack 403 is detected to be greater than or equal to a deviation threshold, the energizing unit 412 energizes and heats the shape memory alloy spring 413, causing the shape memory alloy spring 413 to deform due to heat, generating a driving force to move the motion probe 414, and generating a pushing force to correct the deformation of the rack 403 through the movement of the motion probe 414.

[0132] In this embodiment, each shape memory alloy actuator 410 may consist of four shape memory alloy springs 413 for providing deformation, an energizing unit 412 for energizing the shape memory alloy springs 413, and motion probes 414 respectively disposed at one end of the shape memory alloy springs 413 and moved under the drive of the corresponding shape memory alloy springs 413.

[0133] Preferably, the shape memory alloy spring 413 can be a nickel-titanium shape memory alloy spring; more preferably, the four shape memory alloy springs 413 are arranged orthogonally, which allows the shape memory alloy actuator 410 to apply a pushing or pulling force in any direction in a two-dimensional plane; specifically, with Figure 11 For example, the shape memory alloy spring 413 located in any direction (up, down, front, or back) inside the rack 403 can be energized independently by the energizing unit 412, so that the motion probe 414 at its end can be moved a certain distance by the deformation of the shape memory alloy spring 413, so as to compensate for the deformation of the rack 403 in any direction (up, down, front, or back).

[0134] Here, the power-on unit 412 can communicate with the central control room. When the power-on unit 412 receives the pulse width modulation control signal sent by the central control room, the miniature heating element inside the power-on unit 412 rapidly heats the shape memory alloy spring 413 in a specific direction. When the temperature of the shape memory alloy spring 413 exceeds its austenitic phase transformation end temperature, its material crystal phase will change from compliant martensite to rigid austenite, and in the process, it will recover its preset "memory" shape, thereby generating a powerful and precise driving force. This driving force drives the motion probe 414 to move a certain distance (i.e., compensate for displacement) and generates a pushing force to correct the deformation of the rack 403.

[0135] Preferably, the shape memory alloy actuator 410 may further include a sleeve 411 and a trapezoidal plate 415; the sleeve 411 is used to accommodate the energizing unit 412, the shape memory alloy spring 413 and the motion probe 414, and has a receiving hole for mounting the energizing unit 412, the shape memory alloy spring 413 and the motion probe 414; the trapezoidal plate 415 is disposed outside the sleeve 411, one end of which is fixedly connected to the other end of the motion probe 414, and the other end contacts the inner wall of the rack 403 in different directions; by setting the trapezoidal plate 415, the driving force generated by the deformation of the shape memory alloy spring 413 is transmitted through the motion probe 414 to the wedge block mechanical amplification mechanism, that is, the trapezoidal plate 415. The trapezoidal plate 415 can cleverly amplify the millimeter-level displacement generated by the shape memory alloy spring 413 and convert it into a pushing force sufficient to correct the deformation of the rack.

[0136] Here, the motion probe 414 is preferably made of ceramic material, the sleeve 411 is preferably made of high-performance engineering plastic, and the trapezoidal plate 415 is preferably made of metal material, in order to improve the safety and stability of the shape memory alloy actuator 410 during use.

[0137] Here, the specific process by which the shape memory alloy actuator 410 performs the corresponding action includes the following steps:

[0138] Step 21, Monitoring and Data Acquisition: Use multiple fiber optic grating sensors 401 to monitor the minute displacement of the rack 403 caused by the explosion shock wave, and record data reflecting the straightness deviation of the rack 403.

[0139] Step 22, Data reception and judgment: The central control room receives the straightness deviation data of rack 403 and judges whether the straightness deviation corresponding to the data exceeds the preset threshold.

[0140] Step 23, Calculation and Instruction: If the corresponding straightness deviation is greater than or equal to the deviation threshold, the central control room calculates the required displacement compensation and instructs the shape memory alloy actuator 410 at the corresponding position to perform the corresponding action.

[0141] Step 24, Execution and Compensation: The energizing unit 412 heats the shape memory alloy springs in the corresponding direction of the four shape memory alloy springs 413, causing them to restore their preset shape. During the process of restoring the preset shape, the shape memory alloy spring 413 in that direction pushes the motion probe 414 at its end. The motion probe 414 further pushes the trapezoidal plate 415 connected to it, thereby generating a compensating displacement for restoring the rack 403 to a straight state.

[0142] It should be noted that during the displacement compensation process of the shape memory alloy actuator 410, the fiber optic grating sensor 401 continues to monitor, forming a high-speed closed-loop feedback loop. Based on the real-time feedback of straightness data, the central control room fine-tunes the action of the shape memory alloy actuator 410 until the straightness of the rack 403 is detected to be within the safety tolerance zone. At this point, the energizing unit 412 stops heating the shape memory alloy spring 413. After cooling, the shape memory alloy spring 413 returns to its compliant martensitic state, releasing the force on the rack 403. The entire repair module resets and enters standby mode. Simultaneously, the complete data generated by the shock wave event and the self-repair process of the repair module will be automatically stored in the system log of the central control room, providing a basis for subsequent health assessment and maintenance of the transmission mechanism.

[0143] Embodiments of the present invention also provide a protection method based on the above-described protection system, specifically including the following steps:

[0144] Step 31, Threat Warning: The monitoring module 101 monitors the water area within the preset range in real time and identifies potential underwater explosion shock waves;

[0145] Step 32, Active Interception: When the underwater explosion shock wave is detected, the interception module 2 is activated. One end of the protective net 203 in the interception module 2 pops out from the foundation trench 202 and unfolds along the height direction of the dock gate to buffer the underwater explosion shock wave.

[0146] Step 33, passive energy dissipation: The underwater explosion shock wave after being buffered by the interception module 2 is buffered a second time through multiple energy dissipation units 300 in the energy dissipation module 3.

[0147] Step 34, self-repair of key mechanism: The straightness of rack 403 in the transmission mechanism 4 of the dock lock is monitored in real time by the displacement monitoring unit in the repair module. When the straightness of rack 403 is detected to be greater than or equal to the deviation threshold, the displacement compensation unit in the repair module generates a compensation displacement to restore the straightness of rack 403.

[0148] Here, the threat warning process aims to establish the first invisible line of defense for the dock gate; when the monitoring module 101 detects the underwater explosion shock wave, the active interception process provides the dock gate with the first flexible interception barrier through the interception module 2 to buffer and absorb the energy of the explosion shock wave for the first time.

[0149] Furthermore, the passive energy dissipation process provides a second core energy dissipation barrier for the dock gate through the energy dissipation module, so as to buffer and absorb the energy of the explosion shock wave. Even further, in order to ensure that the key opening and closing transmission mechanism of the dock gate remains intact after being subjected to the explosion impact, the key mechanism self-repair process performs adaptive displacement compensation through the repair module, which aims to automatically restore the straightness deviation of the rack in the transmission mechanism caused by the impact deformation.

[0150] Based on the aforementioned closed-loop protection system that integrates early warning, automatic interception, multi-level energy consumption, and functional self-repair, the dock gate is protected. This solves the problems of traditional protection systems and corresponding protection methods being singular, transmission mechanisms being prone to functional failure, and slow response to protection upgrades. It significantly improves the blast resistance and functional integrity of the dock gate, thereby extending its service life and enhancing the safety of large ports and shipbuilding bases.

[0151] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A protective system for a large dock gate, characterized in that, include: The monitoring module is installed in the water area within a preset range in front of the dock gate to monitor the water area within the preset range in real time and identify potential underwater explosion shock waves. The interception module includes a foundation trench and a protective net. The foundation trench is set on the foundation in front of the dock gate. Before the interception module is activated, the protective net is stored in the foundation trench. When an underwater explosion shock wave is detected, one end of the protective net pops out from the foundation trench and unfolds along the height direction of the dock gate to buffer the underwater explosion shock wave. The energy-consuming module includes multiple energy-consuming units, which are evenly laid on the water-facing side of the dock gate to provide secondary buffering of the underwater explosion shock wave after it has been buffered by the interception module. as well as The repair module, located in the transmission mechanism of the dock gate, includes a displacement monitoring unit and a displacement compensation unit. The displacement monitoring unit is used to monitor the straightness of the rack in the transmission mechanism in real time. The displacement compensation unit is used to generate a compensation displacement when the straightness of the rack is detected to be greater than or equal to a deviation threshold, so as to restore the straightness of the rack.

2. The protection system for large dock gates according to claim 1, characterized in that, The interception module also includes: Multiple buffer capsules are evenly distributed in the mesh of the protective net, and each buffer capsule is filled with a shear-thickening fluid. Pre-set tracks, symmetrically arranged on both sides of the foundation trench and along the height of the dock gate, are used to guide the deployment of the protective net; and The power components are evenly distributed on two sides of the protective net along the height direction of the dock gate, and the other side of the power components is slidably connected to the preset track. Before the interception module is activated, the power components and the protective net are both stored in the foundation trench. When the underwater explosion shock wave is detected, the power components are activated and drive the protective net to pop out of the foundation trench and unfold along the preset track.

3. The protection system for large dock gates according to claim 2, characterized in that, The preset track includes: Guide rails are symmetrically arranged on both sides of the foundation trench and fixedly connected to the foundation trench, and the guide rails are provided with protective sleeves; and A float, disposed on top of the guide rail and rotatably connected to the top of the guide rail, is used to position the guide rail and provide tension; and / or The power component is a gas injector, which includes: A gas cylinder, slidably connected to the preset track on one side, contains high-pressure gas; and An electromagnetic valve is installed on the gas supply port of the gas cylinder. When an underwater explosion shock wave is detected, the electromagnetic valve opens to release high-pressure gas from the gas cylinder. Under the action of the high-pressure gas, the protective net is ejected from the foundation trench and deployed.

4. The protection system for large dock gates according to claim 2, characterized in that, The protective netting is woven from aramid fibers; and / or The buffer capsule is made of a polymer film; and / or The shear-thickening fluid is composed of silica nanoparticles dispersed in a polyethylene glycol-based fluid.

5. The protection system for large dock gates according to claim 1, characterized in that, Each power-consuming unit includes: A connecting frame is disposed on the water-facing side of the dock gate, and the side of the connecting frame is fixedly connected to the dock gate. A connecting slot is provided on the connecting frame. A composite structural layer is disposed in the connecting slot and forms a mortise and tenon structure with the connecting frame.

6. The protection system for large dock gates according to claim 5, characterized in that, Two adjacent energy-consuming units are spliced ​​together by quick-connect components, which are disposed on the connecting frame. The connecting frame has splicing slots on opposite sides for splicing adjacent energy-consuming units, and quick-connect components are provided on both opposite sides of the connecting frame. Each quick-connect component includes: A connector is disposed in a mounting hole on the connecting frame and can move up and down along the mounting hole; An elastic element, fitted onto one end of the connector and located within the mounting hole; and An operating handle is attached at one end to one end of the connector plug and located below the elastic element, and at the other end passes through the connecting frame. The connecting frame has a handle slot for the operating handle to move up and down. Pulling the operating handle up or down moves it along the handle slot, causing the other end of the connector plug to insert into the mounting hole of the assembly slot on an adjacent connecting frame, and the connector plug is secured by the elastic force of the elastic element; and / or The composite structure layer includes: The first buffer layer is disposed on the water-facing side of the dock gate, and both sides of the first buffer layer are engaged with the connecting slots. The first rigid fracture layer is disposed between the water-facing side of the dock gate and the first buffer layer, and both sides of the first rigid fracture layer are engaged with the connecting slots. A second buffer layer is disposed between the water-facing side of the dock gate and the first rigid fracturing layer, and both sides of the second buffer layer are engaged with the connecting slots; and The second rigid fracture layer is disposed between the water-facing side of the dock gate and the second buffer layer, and both sides of the second rigid fracture layer are engaged with the connecting slot.

7. The protection system for large dock gates according to claim 6, characterized in that, Both the first and second buffer layers have honeycomb holes, the diameter of the honeycomb holes in the first buffer layer is larger than the diameter of the honeycomb holes in the second buffer layer, and the honeycomb holes in the first and second buffer layers are staggered; and / or Both the first rigid fracture layer and the second rigid fracture layer have multiple conical channels, and the size of the conical channel on the first rigid fracture layer is smaller than the size of the conical channel on the second rigid fracture layer.

8. The protection system for large dock gates according to claim 1, characterized in that, The displacement monitoring unit includes multiple fiber Bragg grating sensors, which are uniformly arranged along the rack base in the transmission mechanism; and / or The displacement compensation unit includes multiple shape memory alloy actuators, which are evenly arranged inside the rack.

9. The protection system for large dock gates according to claim 8, characterized in that, Each of the shape memory alloy actuators includes: Multiple shape memory alloy springs are symmetrically and evenly arranged in different directions inside the rack; A power supply unit, disposed at one end of the shape memory alloy spring and electrically connected to the shape memory alloy spring, is used to supply power to the shape memory alloy spring; and The motion probe is fixed at one end to the other end of the shape memory alloy spring, and the other end contacts the inner wall of the rack in different directions. When the straightness of the rack is detected to be greater than or equal to the deviation threshold, the energizing unit energizes and heats the shape memory alloy spring. The shape memory alloy spring deforms due to heat to generate a driving force that pushes the motion probe to move, and the movement of the motion probe generates a pushing force to correct the deformation of the rack.

10. The protection system for large dock gates according to claim 1, characterized in that, Also includes: An interference module is installed on the monitoring module. When an underwater explosion shock wave is detected, the interference module is activated and emits an interference signal to actively interfere with the threat source that will cause the underwater explosion.

11. A protection method based on the protection system of a large dock gate according to any one of claims 1 to 10, characterized in that, Includes the following steps: Threat warning: The monitoring module performs real-time monitoring of the water area within a preset range and identifies potential underwater explosion shock waves; Active interception: When an underwater explosion shock wave is detected, the interception module is activated. One end of the protective net in the interception module pops out from the foundation trench and unfolds along the height of the dock gate to buffer the underwater explosion shock wave. Passive energy dissipation: The underwater explosion shock wave, after being buffered by the interception module, is buffered a second time through multiple energy dissipation units in the energy dissipation module; Self-repair of key mechanisms: The straightness of the rack in the transmission mechanism of the dock lock is monitored in real time by the displacement monitoring unit in the repair module. When the straightness of the rack is detected to be greater than or equal to the deviation threshold, the displacement compensation unit in the repair module generates a compensation displacement to restore the straightness of the rack.

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