A net mechanical system for pile platform and a method for laying and recovering

Abstract

The present application relates to the technical field of pile foundation platform net, and specifically discloses a net mechanical winding and unwinding system for pile foundation platform and a laying and recovering method. The net mechanical winding and unwinding system for pile foundation platform comprises a winch winding and unwinding subsystem, a guide subsystem, a buoyancy subsystem, a control and marking subsystem and a pile foundation. The net laying method comprises the following steps: S1, system pre-installation; S2, guide wire tension adjustment; S3, initial connection of the net bag; S4, slow lowering of the net bag; and S5, posture calibration of the net bag. The net recovering method comprises the following steps: T1, recovery preparation; T2, net bag buoyancy floating; T3, cable disconnection; T4, net bag recovery; and T5, system reset. By adopting permanent marking of the cable to record the net posture data, by setting physical markers on the guide cable and recording the cable length and net posture parameters, and by combining the control and marking subsystem, the precise reproduction of the net laying position and posture is realized, and the technical effect of ensuring stable pollution blocking effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of netting technology for pile foundation platforms, specifically to a mechanical netting deployment and retrieval system and method for deploying and recovering netting for pile foundation platforms. Background Technology

[0002] In the areas of nuclear power plant intakes, ports, and other pile foundation platforms, large debris nets or net structures are typically deployed to intercept floating debris, ensure water intake safety, and maintain unobstructed navigation. As critical protective facilities, these nets require regular deployment, tensioning, and retrieval to ensure stable interception capabilities. Deployment necessitates precise unfolding and conforming to the seabed topography, while retrieval requires complete disconnection and transfer. The entire process demands effective control over the net's shape to prevent deviations or entanglement from affecting its protective effect. Therefore, high standards of safety, reliability, and convenience are required for net deployment and retrieval operations.

[0003] Currently, the deployment, tensioning, and retrieval of such nets primarily rely on underwater operations by divers, involving a series of complex steps such as hooking, unhooking, pulling, and adjusting the net shape. Due to the underwater working environment, low visibility and complex currents are common, increasing the risk of accidents such as snagging and entanglement for divers, making personal safety difficult to guarantee. Furthermore, the entire operation is highly dependent on the divers' professional skills, which are difficult to train and scarce, further restricting the stability and accessibility of the operation. This reliance on divers not only exposes net maintenance to extremely high safety risks but also results in insufficient operational flexibility and versatility due to the dependence on specialized resources, becoming a core pain point in the current field of net maintenance for pile foundation platforms. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a mechanical net deployment and retrieval system and method for pile foundation platforms. This solves the problem that in existing technologies, each net deployment, tensioning, and retrieval relies on divers in low-visibility, complex-current underwater environments to perform hooking and unhooking operations, leading to difficulties in ensuring personal safety and high operational risks.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a netting mechanical deployment and retrieval system for a pile foundation platform, comprising: a winch deployment and retrieval subsystem, a guiding subsystem, a buoyancy subsystem, a control and marking subsystem, and a pile foundation;

[0006] The winch retrieval subsystem is fixed to the pile foundation by the installation structure, providing the main force for the retrieval and release of the net. Its power output end cooperates with the force-bearing end of the guiding subsystem and is electrically connected to the control signal output end of the control and marking subsystem.

[0007] One end of the guiding subsystem is connected to the pile foundation, and the other end extends to a preset position on the seabed to constrain the movement trajectory of the net and cable. Its signal feedback end communicates with the signal receiving end of the control and marking subsystem.

[0008] The buoyancy subsystem is used to provide upward buoyancy for net recovery, and its status monitoring terminal communicates with the monitoring signal input terminal of the control and marking subsystem.

[0009] The control and marking subsystem is used to coordinate the working sequence of each subsystem and record the attitude of the net, and is electrically connected to the winch launching and retrieval subsystem, the guiding subsystem, and the buoyancy subsystem, respectively.

[0010] Preferably, the winch winding and unwinding subsystem includes a mounting base, which is fixedly connected to the pile foundation. A protective bracket is fixedly connected to the top of the mounting base. A speed reducer is installed inside the protective bracket. A mechanical locking brake mechanism is installed on one side of the protective bracket. The output end of the speed reducer is connected to the rotating shaft of the drum and is used to drive the drum to rotate in both directions to realize cable winding and unwinding.

[0011] Preferably, the guiding subsystem includes a tightening adjustment mechanism, a guide wire, and a guide pulley;

[0012] The upper end of the guide wire is connected to the pile foundation through a tightening and adjusting mechanism, and the lower end is connected to the seabed fixed anchor. A guide component is slidably fitted in the middle of the guide wire, and a net bag is fixedly connected to one side of the guide component to constrain the movement direction of the net bag side net.

[0013] The guide pulley is fixed at a preset position on the pile foundation, and one end of the cable is wound around the drum of the winch winding subsystem, while the other end passes around the guide pulley and connects to the bottom net of the net bag to guide the movement trajectory of the bottom net of the net bag.

[0014] The tightening adjustment mechanism is used to adjust the tension of the guide wire to ensure that the guide wire is taut and to prevent the net from shifting during deployment or retrieval.

[0015] Preferably, the guide assembly is fixedly connected to the side mesh of the net bag by bolts or buckles, and the guide assembly slides along the guide wire;

[0016] During the deployment or retrieval of the net, the guiding component can limit the lateral displacement of the net, ensuring that the net moves smoothly along the preset path and avoiding collisions or entanglement between the net and the pile foundation or other structures.

[0017] Preferably, the buoyancy subsystem includes multiple floating body modules and fixed connecting components;

[0018] The floating module is made of corrosion-resistant and impact-resistant material and is evenly fixed to the bottom net of the net bag by fixing connectors;

[0019] During net retrieval, the floating module generates upward buoyancy, driving the net to float to the water surface, reducing the load dependence on the winch retrieval subsystem and improving retrieval efficiency.

[0020] The status monitoring terminal of the buoyancy subsystem is used to monitor the buoyancy magnitude and integrity of the floating module, and the status monitoring terminal of the buoyancy subsystem transmits the monitoring data to the monitoring signal input terminal of the control and marking subsystem.

[0021] Preferably, the mounting base is made of metal and is fixedly connected to the pre-set mounting holes of the pile foundation by expansion bolts to ensure that the winch retrieval subsystem is firmly installed and to prevent shaking during the retrieval and release of the net.

[0022] The mechanical locking and braking mechanism is either electromagnetic or mechanical, which quickly brakes the drum and further ensures the safety of the net's deployment and retrieval.

[0023] Preferably, the control and marking subsystem includes an operating device, a cable marking mechanism, and a data recording unit;

[0024] The operating device is a portable electric or manual operator. The operating device is electrically or mechanically connected to the reducer of the winch winding and unwinding subsystem. It is used to control the start and stop of the drum and the winding and unwinding speed of the cable, thereby adjusting the lifting and lowering speed of the net bag.

[0025] The cable marking mechanism is a physical marker set on the cable. The cable marking mechanism corresponds to a fixed reference point on the pile foundation and is used to record the cable length and the deployment posture of the net.

[0026] The data recording unit is used to store data on cable deployment and retraction length, guide wire tension, and net posture, providing a basis for subsequent net deployment posture reproduction.

[0027] Preferably, the guiding component slides in conjunction with the guiding subsystem and is used to associate with the net to assist in the smooth deployment and retrieval of the net.

[0028] A method for deploying netting for a pile foundation platform, the method comprising the following steps:

[0029] S1. System pre-installation: Fix the winch launching and retracting subsystem to the preset position of the pile foundation through the mounting base, connect the tightening and adjusting mechanism of the guide subsystem to the pile foundation, connect the lower end of the guide wire to the seabed fixed anchor, fix the guide component to the side net of the net, and install the floating module of the buoyancy subsystem to the bottom net of the net through the fixed connector.

[0030] S2. Guide wire tension adjustment: The tension of the guide wire is adjusted by starting the tightening adjustment mechanism through the operating device of the control and marking subsystem, so that the guide wire is in a taut state to avoid interference with other structures;

[0031] S3. Initial connection of the net bag: Fix the top of the net bag to the winch point on the pile foundation, wind one end of the cable of the winch take-up and release subsystem onto the drum, and connect the other end of the cable to the bottom net of the net bag by passing it over the guide pulley.

[0032] S4. Slowly lowering the net: The operating device controls the reducer to drive the drum to reverse, slowly lowering the cable and causing the net to slide along the guide wire and guide assembly. At the same time, the cable marking mechanism records the length of the cable lowering.

[0033] S5. Net attitude calibration: After the net is in contact with the seabed topography, the tension of the guide wire is finely adjusted by tightening the adjustment mechanism to make the net fully unfold. The physical marks of the cable marking mechanism are adjusted to align with the fixed reference points on the pile foundation to complete the net deployment.

[0034] A method for recovering netting used in a pile foundation platform, the method comprising the following steps:

[0035] T1. Recovery Preparation: The mechanical locking brake mechanism is unlocked by activating the operating device of the control and marking subsystem, releasing the cable tension and preparing for the net to float.

[0036] T2. Net Buoyancy Ascent: The float module of the buoyancy subsystem generates upward buoyancy, driving the bottom net of the net to rise, and causing the entire net to float along the guide wire and guide components. The rising speed of the net is monitored in real time by the control and marking subsystem.

[0037] T3. Cable disconnection: After the net floats to the surface, the operator disconnects the cable from the bottom net rope and confirms the cable recovery benchmark through the cable marking mechanism.

[0038] T4. Net retrieval: The reducer is controlled by the operating device to drive the drum to rotate forward and retrieve the cable. The connection between the side net and the guide component, and the connection between the top of the net and the pile foundation hinge point are disconnected in sequence, and the net is transferred to the working platform.

[0039] T5. System Reset: After recovery is completed, adjust the guide wire to a relaxed state through the tightening adjustment mechanism, shut down the non-essential functions of the control and marking subsystems, check and record the status of each subsystem, and prepare for the next operation.

[0040] This invention provides a mechanical netting deployment and retrieval system and method for use on pile foundation platforms. It offers the following advantages:

[0041] 1. This invention employs an initial underwater installation with fully mechanized deployment and retrieval. A winch deployment subsystem provides the primary power for net lifting and lowering, a guiding subsystem constrains the net's trajectory, and a buoyancy subsystem assists in net recovery and ascent. This creates an operational system that eliminates the need for divers to participate in routine net replacement and retrieval, significantly reducing operational safety risks. Compared to existing technologies where each net deployment, tensioning, and retrieval relies on divers in low-visibility, complex underwater environments for hooking and unhooking, this invention addresses the shortcomings of high personal safety and operational risks, while also reducing reliance on professional divers.

[0042] 2. This invention uses permanent cable marking to record the attitude data of the netting. By setting physical marks on the guide cables and recording the cable length and netting attitude parameters, combined with the control and marking subsystem, the precise reproduction of the netting's deployment position and attitude is achieved, ensuring a stable interception effect. Compared with the existing technology that relies on manual experience to adjust the netting deployment shape, and the difficulty in achieving consistent deployment shapes each time, this invention solves the shortcomings of poor repeatability and the fact that the interception effect is greatly affected by human factors, thus achieving standardization of netting operation and maintenance.

[0043] 3. This invention employs a highly efficient operation and maintenance scheme for buoyancy-assisted recovery through multi-subsystem collaborative operation. By having the winch deployment and retrieval subsystem, guidance subsystem, and buoyancy subsystem work together, it reduces dependence on a single power source and minimizes the constraints of weather and sea conditions on operations. This achieves the technical effects of shortening operation time and reducing long-term operation and maintenance costs. Compared with existing technologies where diving operations are severely constrained by weather and sea conditions, have short effective operation time, and incur high costs for diving support and equipment, this invention solves the shortcomings of low operation efficiency and high operation and maintenance costs, significantly improving the economy and timeliness of net deployment and retrieval operations. Attached Figure Description

[0044] Figure 1 This is an overall plan view of a netting mechanical deployment and retrieval system for a pile foundation platform according to the present invention;

[0045] Figure 2 This is a schematic diagram of the winch retrieval subsystem of a netting mechanical retrieval system for a pile foundation platform according to the present invention;

[0046] Figure 3 This is a schematic diagram of the guide subsystem of a net-laying and unlaying system for a pile foundation platform according to the present invention;

[0047] Figure 4 This is a flowchart illustrating a method for deploying netting for a pile foundation platform according to the present invention.

[0048] Figure 5 This is a schematic flowchart of a method for recovering netting for a pile foundation platform according to the present invention.

[0049] The system comprises: 1. Control and marking subsystem; 2. Winch winding and unwinding subsystem; 201. Reducer; 202. Protective bracket; 203. Mechanical locking and braking mechanism; 204. Mounting base; 205. Drum; 3. Guiding subsystem; 301. Tensioning and adjusting mechanism; 302. Guide wire; 303. Guide pulley; 4. Pile foundation; 5. Guiding assembly; 6. Buoyancy subsystem; 7. Net. Detailed Implementation

[0050] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Please see the appendix Figure 1 -Appendix Figure 5 This invention provides a netting mechanical deployment and retrieval system for a pile foundation platform, comprising: a winch deployment and retrieval subsystem 2, a guiding subsystem 3, a buoyancy subsystem 6, a control and marking subsystem 1, and a pile foundation 4;

[0052] The winch retrieval subsystem 2 is fixed to the pile foundation 4 through the installation structure, providing the main force for the retrieval and release of the net. Its power output end is matched with the force-bearing end of the guide subsystem 3 and is electrically connected to the control signal output end of the control and marking subsystem 1.

[0053] One end of the guidance subsystem 3 is connected to the pile foundation 4, and the other end extends to a preset position on the seabed. It is used to constrain the movement trajectory of the net and cable. Its signal feedback end communicates with the signal receiving end of the control and marking subsystem 1.

[0054] The buoyancy subsystem 6 is used to provide upward buoyancy for net retrieval, and its status monitoring terminal communicates with the monitoring signal input terminal of the control and marking subsystem 1;

[0055] The control and marking subsystem 1 is used to coordinate the working sequence of each subsystem and record the attitude of the net. It is electrically connected to the winch launching and retrieving subsystem 2, the guiding subsystem 3, and the buoyancy subsystem 6, respectively.

[0056] The winch winding and unwinding subsystem 2 includes a mounting base 204, which is fixedly connected to the pile foundation 4. A protective bracket 202 is fixedly connected to the top of the mounting base 204. A reducer 201 is installed inside the protective bracket 202. A mechanical locking brake mechanism 203 is installed on one side of the protective bracket 202. The output end of the reducer 201 is connected to the shaft of the drum 205 to drive the drum 205 to rotate forward and backward to realize the winding and unwinding of the cable.

[0057] The guide subsystem 3 includes a tightening adjustment mechanism 301, a guide wire 302, and a guide pulley 303;

[0058] The upper end of the guide wire 302 is connected to the pile foundation 4 through the tightening and adjusting mechanism 301, and the lower end is connected to the seabed fixed anchor. The guide wire 302 is slidably fitted with a guide component 5 in the middle. A net bag 7 is fixedly connected to one side of the guide component 5 to constrain the movement direction of the net rope on the side of the net bag 7.

[0059] The guide pulley 303 is fixed at a preset position on the pile foundation 4, and one end of the cable is wound around the drum 205 of the winch take-up and release subsystem 2, and the other end passes around the guide pulley 303 and is connected to the bottom net of the net bag 7 to guide the movement trajectory of the bottom net of the net bag 7.

[0060] The tightening adjustment mechanism 301 is used to adjust the tension of the guide wire 302 to ensure that the guide wire 302 is taut and to prevent the net bag 7 from shifting when it is deployed or retrieved.

[0061] The guide assembly 5 is fixedly connected to the side mesh of the net bag 7 by bolts or buckles, and the guide assembly 5 slides along the guide wire 302;

[0062] During the deployment or retrieval of the net bag 7, the guide component 5 can limit the lateral displacement of the net bag 7, ensuring that the net bag 7 moves smoothly along the preset path and avoiding collisions or entanglement between the net bag 7 and the pile foundation 4 or other structures.

[0063] The buoyancy subsystem 6 includes multiple floating body modules and fixed connectors;

[0064] The floating module is made of corrosion-resistant and impact-resistant material and is evenly fixed to the bottom net of the net bag 7 by fixing connectors;

[0065] During the retrieval of the net bag 7, the floating module generates an upward buoyancy, driving the net bag 7 to float to the water surface, reducing the load dependence on the winch retrieval and release subsystem 2 and improving retrieval efficiency.

[0066] The status monitoring terminal of the buoyancy subsystem 6 is used to monitor the buoyancy magnitude and integrity of the floating body module. The status monitoring terminal of the buoyancy subsystem 6 transmits the monitoring data to the monitoring signal input terminal of the control and marking subsystem 1.

[0067] The mounting base 204 is made of metal and is fixedly connected to the pre-set mounting holes of the pile foundation 4 by expansion bolts to ensure that the winch retrieval subsystem 2 is installed firmly and to prevent the net bag 7 from shaking during retrieval and release.

[0068] The mechanical locking brake mechanism 203 is either electromagnetic or mechanical, which quickly brakes the drum 205, further ensuring the safety of the net bag 7 when it is put in and taken out.

[0069] The control and marking subsystem 1 includes an operating device, a cable marking mechanism, and a data recording unit;

[0070] The operating device is a portable electric or manual operator. The operating device is electrically or mechanically connected to the reducer 201 of the winch take-up and release subsystem 2. It is used to control the start and stop of the drum 205 and the cable take-up and release speed, thereby adjusting the lifting speed of the net bag 7.

[0071] The cable marking mechanism is a physical marker set on the cable. The cable marking mechanism corresponds to the fixed reference point on the pile foundation 4 and is used to record the cable length and the deployment posture of the net bag 7.

[0072] The data recording unit is used to store data on cable length, tension of guide wire 302, and attitude of net bag 7, providing a basis for subsequent reproduction of the net bag 7's deployment attitude.

[0073] The guide component 5 slides with the guide subsystem 3 and is used to associate with the net to assist in the smooth deployment and retrieval of the net.

[0074] A method for deploying netting for a pile foundation platform, the method comprising the following steps:

[0075] S1. System pre-installation: The winch launching and retracting subsystem 2 is fixed to the preset position of the pile foundation 4 through the mounting base 204. The tightening adjustment mechanism 301 of the guide subsystem 3 is connected to the pile foundation 4. The lower end of the guide wire 302 is connected to the seabed fixed anchor. The guide component 5 is fixed to the side net of the net bag 7. The floating module of the buoyancy subsystem 6 is installed on the bottom net of the net bag 7 through the fixed connector.

[0076] S2. Guide wire tension adjustment: The tightening adjustment mechanism 301 is activated by the operating device of the control and marking subsystem 1 to adjust the tension of the guide wire 302, so that the guide wire 302 is in a taut state to avoid interference with other structures;

[0077] S3. Initial connection of the net bag: Fix the top of the net bag 7 to the winch point on the pile foundation 4, wind one end of the cable of the winch take-up and release subsystem 2 around the drum 205, and connect the other end of the cable to the bottom net of the net bag 7 by passing it around the guide pulley 303.

[0078] S4. Slowly lowering the net: The operating device controls the reducer 201 to drive the drum 205 to reverse, slowly lowering the cable and causing the net 7 to slide along the guide wire 302 and guide assembly 5. At the same time, the cable marking mechanism records the length of the cable lowering.

[0079] S5. Net attitude calibration: After the net 7 is in contact with the seabed topography, the tension of the guide wire 302 is finely adjusted by the tightening adjustment mechanism 301 to make the net 7 fully unfold. The physical marks of the cable marking mechanism are adjusted to align with the fixed reference points on the pile foundation 4, thus completing the deployment of the net 7.

[0080] A method for recovering netting used in pile foundation platforms, the method comprising the following steps:

[0081] T1. Recovery preparation: The mechanical locking brake mechanism 203 is unlocked by activating the operating device of the control and marking subsystem 1 to release the cable tension and prepare for the net 7 to float.

[0082] T2, Net bag buoyancy rise: The float module of the buoyancy subsystem 6 generates upward buoyancy, which drives the bottom net of the net bag 7 to rise, and drives the entire net bag 7 to rise along the guide wire 302 and guide assembly 5. The rising speed of the net bag 7 is monitored in real time by the control and marking subsystem 1.

[0083] T3. Cable disconnection: After the net 7 floats to the surface, the operator disconnects the cable from the bottom net rope of the net 7 and confirms the cable recovery benchmark through the cable marking mechanism.

[0084] T4. Net bag retrieval: Control the reducer 201 to drive the drum 205 to rotate forward through the operating device, retrieve the cable, and sequentially disconnect the side net rope of net bag 7 from the guide component 5 and the top of net bag 7 from the pile foundation 4, and transfer net bag 7 to the working platform.

[0085] T5. System Reset: After the recovery is completed, adjust the guide wire 302 to a relaxed state through the tightening adjustment mechanism 301, turn off the unnecessary functions of the control and marking subsystem 1, check the status of each subsystem and record it to prepare for the next operation.

[0086] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical netting deployment and retrieval system for a pile foundation platform, characterized in that, include: The winch launching and recovery subsystem (2), the guidance subsystem (3), the buoyancy subsystem (6), the control and marking subsystem (1), and the pile foundation (4); The winch retrieval subsystem (2) is fixed to the pile foundation (4) by the installation structure, providing the main force for the retrieval and release of the net. Its power output end is matched with the force-bearing end of the guide subsystem (3) and is electrically connected to the control signal output end of the control and marking subsystem (1). The guiding subsystem (3) is connected to the pile foundation (4) at one end and extends to a preset position on the seabed at the other end to constrain the movement trajectory of the net and cable. Its signal feedback end communicates with the signal receiving end of the control and marking subsystem (1). The buoyancy subsystem (6) is used to provide upward buoyancy for net recovery, and its status monitoring terminal communicates with the monitoring signal input terminal of the control and marking subsystem (1); The control and marking subsystem (1) is used to coordinate the working sequence of each subsystem and record the attitude of the net, and is electrically connected to the winch launching and receiving subsystem (2), the guiding subsystem (3), and the buoyancy subsystem (6), respectively. The buoyancy subsystem (6) includes multiple floating body modules and fixed connectors; The floating module is made of corrosion-resistant and impact-resistant material and is uniformly fixed to the bottom net of the net bag (7) by fixing connectors; When the net (7) is being retrieved, the floating module generates an upward buoyancy, driving the net (7) to float to the water surface, reducing the load dependence on the winch release and retrieval subsystem (2) and improving the retrieval efficiency; The status monitoring terminal of the buoyancy subsystem (6) is used to monitor the buoyancy magnitude and integrity of the floating body module. The status monitoring terminal of the buoyancy subsystem (6) transmits the monitoring data to the monitoring signal input terminal of the control and marking subsystem (1). The guiding subsystem (3) includes a tightening adjustment mechanism (301), a guide wire (302), and a guide pulley (303). The control and marking subsystem (1) includes an operating device, a cable marking mechanism, and a data recording unit; The operating device is a portable electric or manual operator. The operating device is electrically or mechanically connected to the reducer (201) of the winch winding and unwinding subsystem (2) and is used to control the start and stop of the drum (205) and the cable winding and unwinding speed. The cable marking mechanism is a physical marker set on the cable. The cable marking mechanism corresponds to a fixed reference point on the pile foundation (4) and is used to record the cable length and the deployment posture of the net bag (7). The data recording unit is used to store data on cable length, tension of guide wire (302), and posture of net (7).

2. The netting mechanical deployment and retrieval system for a pile foundation platform according to claim 1, characterized in that: The winch winding and unwinding subsystem (2) includes a mounting base (204), which is fixedly connected to the pile foundation (4). A protective bracket (202) is fixedly connected to the top of the mounting base (204). A speed reducer (201) is installed inside the protective bracket (202). A mechanical locking brake mechanism (203) is installed on one side of the protective bracket (202). The output end of the speed reducer (201) is connected to the shaft of the drum (205) to drive the drum (205) to rotate forward and backward to realize cable winding and unwinding.

3. The netting mechanical deployment and retrieval system for a pile foundation platform according to claim 1, characterized in that: The upper end of the guide wire (302) is connected to the pile foundation (4) through the tightening adjustment mechanism (301), and the lower end is connected to the seabed fixed anchor. The guide wire (302) is slidably fitted with a guide component (5) in the middle. A net bag (7) is fixedly connected to one side of the guide component (5) to constrain the movement direction of the net rope on the side of the net bag (7). The guide pulley (303) is fixed at a preset position on the pile foundation (4), and one end of the cable is wound around the drum (205) of the winch take-up and release subsystem (2), and the other end passes around the guide pulley (303) and is connected to the bottom net of the net bag (7) to guide the movement trajectory of the bottom net of the net bag (7); The tightening adjustment mechanism (301) is used to adjust the tension of the guide wire (302).

4. A netting mechanical deployment and retrieval system for a pile foundation platform according to claim 3, characterized in that: The guide assembly (5) is fixedly connected to the side mesh of the net bag (7) by bolts or buckles, and the guide assembly (5) slides along the guide wire (302); During the deployment or retrieval of the net (7), the guiding component (5) can limit the lateral displacement of the net (7).

5. A netting mechanical deployment and retrieval system for a pile foundation platform according to claim 2, characterized in that: The mounting base (204) is made of metal and is fixedly connected to the pre-set mounting holes of the pile foundation (4) by expansion bolts; The mechanical locking brake mechanism (203) is either electromagnetic or mechanical.

6. A netting mechanical deployment and retrieval system for a pile foundation platform according to claim 3, characterized in that: The guiding component (5) slides in conjunction with the guiding subsystem (3) and is used to associate with the net to assist in the smooth deployment and retrieval of the net.

7. A method for deploying netting for a pile foundation platform, characterized in that, A netting mechanical deployment and retrieval system for a pile foundation platform as described in any one of claims 1-6, the method comprising the following steps: S1. System pre-installation: The winch launching and retracting subsystem (2) is fixed to the preset position of the pile foundation (4) through the mounting base (204), the tightening adjustment mechanism (301) of the guide subsystem (3) is connected to the pile foundation (4), the lower end of the guide wire (302) is connected to the seabed fixed anchor, the guide component (5) is fixed to the side net of the net bag (7), and the floating module of the buoyancy subsystem (6) is installed on the bottom net of the net bag (7) through the fixed connector; S2, tension adjustment of guide wire: The tension of the guide wire (302) is adjusted by starting the tightening adjustment mechanism (301) through the operation device of the control and marking subsystem (1) so that the guide wire (302) is in a taut state to avoid interference with other structures; S3, Initial connection of the net bag: Fix the top of the net bag (7) to the winch point on the pile foundation (4), wind one end of the cable of the winch take-up and release subsystem (2) around the drum (205), and connect the other end of the cable around the guide pulley (303) to the bottom net of the net bag (7); S4. Slowly lowering the net: The reducer (201) is controlled by the operating device to drive the drum (205) to reverse and slowly lower the cable, causing the net (7) to slide along the guide wire (302) and the guide assembly (5). At the same time, the cable lowering length is recorded by the cable marking mechanism. S5. Net attitude calibration: After the net (7) fits the seabed terrain, the tension of the guide wire (302) is finely adjusted by tightening adjustment mechanism (301) so that the net (7) can be fully unfolded. The physical mark of the cable marking mechanism is adjusted so that it is aligned with the fixed reference point on the pile foundation (4) to complete the deployment of the net (7).

8. A method for recovering netting used in pile foundation platforms, characterized in that, A netting mechanical deployment and retrieval system for a pile foundation platform as described in any one of claims 1-6, the method comprising the following steps: T1. Recovery preparation: The mechanical locking brake mechanism (203) is unlocked by activating the operating device of the control and marking subsystem (1) to release the cable tension and prepare for the net (7) to float up; T2, Net buoyancy rise: The float module of the buoyancy subsystem (6) generates upward buoyancy, which drives the bottom net of the net (7) to rise, and drives the entire net (7) to rise along the guide wire (302) and guide assembly (5). The rising speed of the net (7) is monitored in real time by the control and marking subsystem (1). T3. Cable disconnection: After the net (7) floats to the surface, the operator disconnects the cable from the bottom net of the net (7) and confirms the cable recovery benchmark through the cable marking mechanism. T4. Net bag retrieval: Control the reducer (201) to drive the drum (205) to rotate forward by operating the reducer (201) to retrieve the cable, and sequentially disconnect the side net of the net bag (7) from the guide component (5) and the top of the net bag (7) from the pile foundation (4) to transfer the net bag (7) to the working platform. T5. System Reset: After the recovery is completed, adjust the guide wire (302) to a relaxed state through the tightening adjustment mechanism (301), turn off the unnecessary functions of the control and marking subsystem (1), check the status of each subsystem and record it to prepare for the next operation.

Images