Ship antiskid device and ship

Abstract

The utility model discloses a ship anti-skid device which is provided with a PVDF execution layer covering the ground, the two ends of the PVDF execution layer are connected with a direct-current power source through power lines, and the PVDF execution layer is formed by stacking a plurality of layers of polarized thin films. The polarized thin film comprises a PVDF thin film, aluminum electrode layers covering the two faces of the PVDF thin film, and waterproof packaging layers covering the aluminum electrode layers. The anti-skid structure can be started according to needs, the service life of the whole anti-skid layer can be effectively prolonged, the use safety can be guaranteed through the arrangement of the multi-layer insulation structure, the overall power consumption of the device is low, the high-voltage power source only works in the wet and slippery process, the protruding anti-skid structure only appears in the wet and slippery process, and the service life of the anti-skid structure is prolonged. And the abrasion probability is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of ship safety, and in particular to the field of anti-slip technology on ships. Background Technology

[0002] In daily life on a ship, rainy weather or damp environments are common, making it easy to slip and get injured. Therefore, an anti-slip device for ships is designed to reduce injuries to crew members caused by slipping.

[0003] Currently, anti-slip technology for ship hulls mainly relies on anti-slip coatings or physical texture structures. For example, anti-slip coatings use a reasonable combination of primary raw materials such as epoxy resin, hard inorganic granular materials, and polyurethane. For instance, the patent document CN201342818Y, published on November 11, 2009, entitled "Special Anti-slip Coating," discloses an anti-slip coating with epoxy resin as the base coat, alumina particles as the intermediate layer, and polyurethane as the top coat. The epoxy resin acts as a binder between the base and the aggregate, alumina sand is used as the aggregate covering the second layer, and polyurethane is used as the surface sealing material, exposing the sharp points of the aggregate to form a hard, rough surface. However, anti-slip coatings are prone to aging and failure when exposed to seawater and ultraviolet light for extended periods, and their anti-slip performance decreases sharply with surface wear. Physical texture structures, in wet environments (such as rainwater or seawater immersion), have water films covering the gaps in the texture, significantly reducing friction. Both of these solutions are static anti-slip methods, which cannot dynamically adjust their anti-slip performance according to environmental conditions (such as humidity or the presence of a water film), thus posing a safety hazard.

[0004] Current ship surface anti-skid technology has the following shortcomings:

[0005] 1. Static anti-slip failure: Traditional anti-slip coatings and textured structures cannot actively increase friction in wet and slippery environments, resulting in unreliable anti-slip performance;

[0006] 2. High maintenance costs: The anti-slip coating needs to be reapplied regularly, and the physical texture is easily clogged by dirt, resulting in high cleaning and maintenance costs;

[0007] 3. Poor environmental adaptability: Existing technologies cannot respond to environmental changes in real time (such as sudden rain or wave erosion), and the anti-slip performance is out of sync with the usage scenarios. Summary of the Invention

[0008] The technical problem to be solved by this utility model is to realize an anti-slip device with good anti-slip effect and wear resistance.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a ship anti-skid device, the device is provided with a PVDF execution layer covering the ground, the two ends of the PVDF execution layer are connected to a DC power supply through power lines, the PVDF execution layer is composed of multiple layers of polarized thin films stacked together, the polarized thin film includes a PVDF film, an aluminum electrode layer covering both sides of the PVDF film, and a waterproof encapsulation layer covering the aluminum electrode layer.

[0010] The control terminal of the DC power supply is connected to the controller. A humidity sensor is installed near the PVDF execution layer. The humidity sensor is connected to and outputs a sensing signal to the controller.

[0011] The controller communicates with the main control equipment in the ship's wheelhouse.

[0012] The upper surface of the PVDF actuator layer is covered with a wear-resistant coating.

[0013] The waterproof sealing layer is a different color from the wear-resistant coating.

[0014] The PVDF execution layer is composed of 3-10 layers of polarized thin films stacked together, with the thickness of a single polarized thin film being 20-50 μm.

[0015] A vessel in which the anti-skid device is applied to part or all of the ground surface.

[0016] The anti-slip structure of this invention can be activated as needed, effectively increasing the service life of the entire anti-slip layer. Furthermore, the multi-layer insulation structure ensures safety during use. The device has low overall power consumption, with the high-voltage power supply only operating when the surface is wet. The raised anti-slip structure also only appears when the surface is wet, greatly reducing the probability of wear. Attached Figure Description

[0017] The following is a brief explanation of the content and markings in each of the accompanying drawings in this utility model specification:

[0018] Figure 1 Schematic diagram of a ship anti-skid device;

[0019] Figure 2 This is a schematic diagram of the PVDF execution layer structure;

[0020] The markings in the above figures are: 1. Polarized thin film; 2. PVDF thin film; 3. Aluminum electrode layer; 4. Waterproof encapsulation layer. Detailed Implementation

[0021] The following description, with reference to the accompanying drawings, details the specific implementation of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the function and working principle of each part, the manufacturing process, and the operation and use methods. This will help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solution of this utility model.

[0022] The core of the ship anti-skid device is the use of a PVDF actuator layer. This PVDF actuator layer is composed of multiple layers of polarized thin films 1 stacked together and embedded in the ship's deck surface. The polarized thin films 1 can be fixed together by adhesive, and the PVDF actuator layer can also be fixed to the deck by adhesive. Preferably, the PVDF actuator layer consists of 3-10 layers of polarized thin films 1 stacked together, with each layer having a thickness of 20-50 μm. The electrodes are made of sputtered aluminum layers and covered with polyurethane encapsulation. Specifically, aluminum electrode layers 3 are sputtered onto both sides of the PVDF thin film 2 of the polarized thin film 1 and covered by a waterproof encapsulation layer 4 (such as polyurethane). The electrode wires are connected to a power supply. Electrodes are placed at both ends of the PVDF actuator layer, i.e., at both ends of each aluminum electrode layer 3, for connection to the power supply. The PVDF actuator layer can be cut and then applied to the required areas on the ship's deck, such as the surface deck. Multiple independent PVDF actuator layers can be connected to the power supply in parallel.

[0023] The power supply is a high-voltage power module, integrating a DC-DC boost circuit to convert low-voltage input (e.g., 24V) into the high voltage required by the PVDF (the specific voltage value depends on the selected PVDF execution layer parameters). Because high-voltage power supply is used, insulation must be guaranteed. The upper surface of the PVDF execution layer is covered with a wear-resistant coating, such as a thin layer of adhesive sprayed on. This provides both conventional anti-slip properties and the ability to deform itself when the PVDF execution layer protrudes, creating a raised anti-slip structure. Preferably, the waterproof encapsulation layer 4 is a different color from the wear-resistant coating, for example, the wear-resistant coating is blue and the waterproof encapsulation layer 4 is red. This way, if the wear-resistant coating is damaged, the red waterproof encapsulation layer 4 will be very conspicuous, and the damaged area can be detected and repaired immediately, improving electrical safety.

[0024] The device can be equipped with multiple humidity sensor modules, each installed at different locations on the PVDF actuator layer. These capacitive humidity sensors, mounted on the deck surface, detect humidity thresholds of ≥80% (this threshold can be set as needed). Each humidity sensor connects to and outputs a humidity signal to the controller. The controller, the device's control component, receives the humidity sensor signals and, upon detecting slippery conditions, outputs a preset high voltage (200-500V DC) to the PVDF actuator layer, controlling the power supply to power it. Furthermore, for safety, the power supply output is routed to the PVDF actuator layer via a fuse.

[0025] Working principle:

[0026] 1. Dry environment: The humidity sensor is not triggered, there is no voltage input to the PVDF actuator layer, the surface remains smooth, and unnecessary friction loss is reduced.

[0027] 2. Slippery Environment: When the humidity sensor detects water or a high humidity signal, the control module immediately applies high voltage to the PVDF electrode. Manual control can also be used, requiring the controller to communicate with the main control equipment in the ship's wheelhouse. This allows operators to operate from the wheelhouse and initiate operations as needed. Under the applied electric field, the PVDF molecular chains undergo polarization rearrangement, resulting in axial contraction and radial expansion, forming microscopic protrusions (10-50 μm in height) on the surface, significantly increasing surface roughness (friction coefficient increases by 30-50%).

[0028] 3. Automatic reset: After the humidity returns to the safe threshold, the control module cuts off the voltage, and the PVDF returns to a smooth state due to its elastic restoring force, or it can be manually powered off to restore its state.

[0029] Because this anti-slip structure only activates when the surface is wet, and the raised structure is not subject to wear under normal conditions, it overcomes the problems mentioned in the background art and solves the defects of the prior art. Specific beneficial effects include:

[0030] 1. On-demand anti-slip: High friction is activated only under wet conditions, avoiding unnecessary surface wear in dry environments;

[0031] 2. Long lifespan: PVDF and encapsulation materials have significantly better weather resistance than traditional coatings, increasing lifespan by 3-5 times;

[0032] 3. Energy-saving and efficient: The high-voltage power supply only operates when the surface is wet or slippery;

[0033] 4. High compatibility: It can be directly attached to the existing deck surface without structural modification.

[0034] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A slip prevention device for a watercraft, characterized by: The device has a PVDF execution layer covering the ground. The power supply terminal of the PVDF execution layer is connected to a DC power supply through a power line. The PVDF execution layer is composed of multiple layers of polarized thin films stacked together. The polarized thin film includes a PVDF film, an aluminum electrode layer covering both sides of the PVDF film, and a waterproof encapsulation layer covering the aluminum electrode layer.

2. The anti-skid device for ships according to claim 1, characterized in that: The control terminal of the DC power supply is connected to the controller. A humidity sensor is installed near the PVDF execution layer. The humidity sensor is connected to and outputs a sensing signal to the controller.

3. Marine anti-slip device according to claim 2, characterized in that: The controller communicates with the main control equipment in the ship's wheelhouse.

4. A ship slip prevention device according to claim 1, 2 or 3, characterised in that: The upper surface of the PVDF actuator layer is covered with a wear-resistant coating.

5. A marine non-slip device according to claim 4, characterised in that: The waterproof sealing layer is a different color from the wear-resistant coating.

6. A ship slip prevention device according to claim 1 or 5, characterised in that: The PVDF execution layer is composed of 3-10 layers of polarized thin films stacked together, with the thickness of a single polarized thin film being 20-50 μm.

7. A vessel characterised in that: The ship's ground surface, either partially or entirely, is equipped with a ship anti-skid device as described in any one of claims 1-6.

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