Anti-skid treatment method for polyethylene hull part and polyethylene hull part

Abstract

The invention belongs to the technical field of ship body anti-skid treatment, and particularly relates to an anti-skid treatment method for a polyethylene ship body part and the polyethylene ship body part. The anti-skid treatment method for the polyethylene ship body part comprises the following specific steps that firstly, a trepanning device is used for forming a mounting hole in a pedal of the polyethylene ship body part, the aperture of each mounting hole is 0.8-1cm, and the depth of each mounting hole is 2-3cm, so that the mounting holes are uniformly distributed in the upper surface of the pedal; secondly, a threaded hole is formed in the bottom of the mounting hole through trepanning equipment, the hole diameter of the threaded hole is controlled to range from 0.4 cm to 0.5 cm, and water leakage holes are formed in the positions, located at the two ends of the threaded hole, of the bottom of the mounting hole. When a user gets on or gets off a ship and treads on the pedal, friction force between a sole or a foot and the pedal can be increased, accidental falling is avoided, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of anti-skid treatment of hulls, in particular to an anti-skid treatment method for polyethylene hull parts and the polyethylene hull parts. Background Art

[0002] Traditional leisure boats such as sailboats, leisure yachts and fishing boats are mainly made of fiber reinforced plastics as the main material. However, recently, the regulatory supervision of environmental pollution and marine safety of FRP hulls has been strengthened. FRP has the anti-environmental characteristics of being non-recyclable and taking more than 100 years to decompose from nature when discarded. In addition, FRP hulls have the disadvantage that moisture is easily absorbed by the core when not completely stacked, so there is a need for alternative materials.

[0003] Polyethylene is being tried as a hull material to replace FRP. According to the different molecular weights of the polymers, PE can be divided into low-density polyethylene, high-density polyethylene, ultra-high molecular weight polyethylene, etc.

[0004] PE has good impact resistance and abrasion resistance, and low water absorption, making it suitable for use as a hull material. However, the friction coefficient of PE is close to 0. If it is processed into a sheet form and used as a hull material, due to the low friction coefficient, ship users are prone to slipping, which may cause injuries to ship users.

[0005] Therefore, a method for anti-skid treatment of polyethylene hull parts and polyethylene hull parts are now proposed to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a method for anti-skid treatment of polyethylene hull parts and polyethylene hull parts, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a method for anti-skid treatment of polyethylene hull parts, the specific steps of the anti-skid treatment method of polyethylene hull parts are as follows:

[0008] Step 1: Use a hole-opening device to open mounting holes on the pedal of the polyethylene hull part. The diameter of the mounting holes is 0.8-1 cm, and the depth of the holes is 2-3 cm, so that the mounting holes are evenly distributed on the upper surface of the pedal;

[0009] Step 2: Use a hole-opening device to open a threaded hole at the bottom of the mounting hole. The diameter of the threaded hole is controlled at 0.4-0.5 cm. Drain holes are opened at the bottom of the mounting hole and at both ends of the threaded hole. The two drain holes need to pass through the pedal.

[0010] Step 3: Select a support block, and fix the threaded rod at the lower end of the support block, open a socket on the upper surface of the support block, insert the rubber column and the rubber block inside the socket, and insert the rubber column into the socket;

[0011] Step 4: Threaded mounting holes are opened on the left and right sides of the support block, and threaded columns are set inside the two threaded mounting holes. The rubber column and the socket are fixed by the two threaded columns. Finally, the assembled anti-slip component is threadedly connected to the threaded hole through the threaded rod at the lower end.

[0012] A polyethylene hull part comprises a pedal, wherein the upper side of the pedal is provided with evenly arranged mounting holes, the bottom of the mounting hole is provided with a threaded hole, the internal thread of the threaded hole is provided with a threaded rod, a support block is fixed to the upper end of the threaded rod, the upper side of the support block is provided with a plug hole, the internal plug of the plug hole is provided with a rubber column, a rubber block is fixed to the upper side of the rubber column, threaded mounting holes are provided on the left and right sides of the support block, threaded columns are threadedly provided inside the two threaded mounting holes, and the rubber column is fixedly connected to the support block via the threaded column.

[0013] Preferably, the rubber block and the rubber column are integrally formed.

[0014] Preferably, symmetrical water leakage holes are provided at the bottom of the mounting hole.

[0015] Preferably, the upper surface of the rubber block is higher than the upper surface of the pedal.

[0016] Preferably, the pedal is made of polyethylene sheet.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present application increases the friction of the polyethylene hull parts by installing a support block, a rubber column and a rubber block on the upper end of the pedal. When the user steps on the pedal when getting on or off the boat, the friction between the sole or foot and the pedal can be increased to avoid accidental falls and increase safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 2 The structure of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 3 is a schematic diagram of the structure of the pedal;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the pedal.

[0023] In the figure: 1 pedal, 2 threaded rod, 3 support block, 4 rubber column, 5 rubber block, 6 threaded column. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Example:

[0027] See also Figure 1-4 , the present invention provides a technical solution:

[0028] A method for anti-skid treatment of polyethylene hull parts, the specific steps of the anti-skid treatment method of polyethylene hull parts are as follows:

[0029] Step 1: Use a hole-opening device to open mounting holes on the pedal 1 of the polyethylene hull part, the diameter of the mounting holes is 0.8-1 cm, the depth of the holes is 2-3 cm, and the mounting holes are evenly distributed on the upper surface of the pedal 1;

[0030] Step 2: Use a hole-opening device to open a threaded hole at the bottom of the mounting hole. The diameter of the threaded hole is controlled to be 0.4-0.5 cm. Drain holes are opened at the bottom of the mounting hole and at both ends of the threaded hole. The two drain holes need to penetrate the pedal 1.

[0031] Step 3: Select a support block 3, and fix the threaded rod 2 at the lower end of the support block 3, open a socket on the upper surface of the support block 3, insert the rubber column 4 and the rubber block 5 inside the socket, and insert the rubber column 4 into the socket;

[0032] Step 4: Threaded mounting holes are opened on the left and right sides of the support block 3, and threaded columns 6 are arranged inside the two threaded mounting holes. The rubber column 4 and the socket are fixed by the two threaded columns 6. Finally, the assembled anti-slip component is threadedly connected to the threaded hole through the threaded rod 2 at the lower end.

[0033] PE material means that the component at least partially contains PE, and PE may include high-density polyethylene, high-density polyethylene, ultra-high molecular weight polyethylene, etc., and is not limited by a specific molecular weight or physical property. To increase the surface friction of the PE material with a low friction coefficient, it is possible to consider forming a pattern on the surface when the pedal 1 is molded, but if the pedal 1 has a curved shape, it is difficult to form a surface pattern through the molding process.

[0034] In addition to the anti-slip treatment used in this application, the following methods can also be used:

[0035] Mechanical processing: grinding the polyethylene surface with sandpaper, grinding wheel and other tools to increase the surface roughness and thus improve the friction coefficient. This method is simple and easy, but care should be taken not to over-grind to avoid weakening the material strength; using molds or special equipment to press regular patterns or concave-convex structures on the surface of polyethylene parts to form an effective anti-slip texture. This texture can be dotted, linear or other geometric shapes, and the specific design depends on actual needs.

[0036] Chemical treatment: Use specific chemical reagents to treat the polyethylene surface, change its molecular structure to increase surface energy, and thus improve friction performance. For example, polar groups can be generated on the surface through flame treatment, corona discharge, etc., to promote the adhesion of subsequent coatings; select anti-slip coatings suitable for polyethylene substrates, such as epoxy resins, polyurethanes, etc., and spray them evenly on the surface. These coatings usually contain fillers or particulate matter, which can form a protective layer with a certain degree of roughness after drying, providing a good anti-slip effect.

[0037] Physical covering: Paste specially designed anti-skid pads directly on key areas prone to slipping (such as decks, steps, etc.). These pads are generally made of rubber, PVC or other high friction coefficient materials, have good elasticity and wear resistance, and are easy to clean and replace; embed anti-skid strips made of metal or plastic into polyethylene parts to form a permanent anti-skid structure. This method is not only beautiful, but also durable and reliable, especially suitable for long-term use occasions.

[0038] Composite materials: Double-layer or multi-layer co-extrusion process is used in the manufacturing process to add a functional layer with a higher friction coefficient on the polyethylene bottom layer, such as hard alloy, ceramic particles, etc. This can not only maintain the advantages of the original material, but also significantly improve the surface anti-slip performance; short-cut glass fiber, carbon fiber and other reinforcing materials are mixed into the polyethylene material to make its internal structure more dense and the surface rougher, thereby achieving the purpose of anti-slip.

[0039] Thermoforming: By locally heating the polyethylene sheet and applying tension, fine cracks or a mesh structure are produced on its surface to increase friction. This method is suitable for large-area flat parts. It is easy to operate and low-cost. By using mold pressing under high temperature and high pressure conditions, complex three-dimensional textures are formed on the surface of polyethylene parts, which are both beautiful and practical.

[0040] A polyethylene hull part includes a pedal 1. The upper side of the pedal 1 is provided with evenly arranged mounting holes. The bottom of the mounting hole is provided with a threaded hole. The internal threads of the threaded hole are provided with a threaded rod 2. The threaded rod 2 is threadedly connected to the threaded hole, thereby increasing the convenience of installation. When the rubber block 5 needs to be replaced, it is also convenient to disassemble the entirety. A support block 3 is fixed to the upper end of the threaded rod 2. A socket is provided on the upper side of the support block 3. A rubber column 4 is inserted inside the socket. A rubber block 5 is fixed to the upper side of the rubber column 4. Threaded mounting holes are provided on the left and right sides of the support block 3. Threaded columns 6 are threadedly provided inside the two threaded mounting holes. The rubber column 4 is fixedly connected to the support block 3 through the threaded columns 6.

[0041] The rubber block 5 is integrally formed with the rubber column 4 to increase stability and is not easily damaged after long-term pedaling. If the rubber block 5 is worn and its surface height is lower than the surface of the pedal 1, it can be disassembled and replaced.

[0042] Symmetrical water leakage holes are provided at the bottom of the mounting hole. When water enters the mounting hole, the water can be directly discharged through the water leakage holes, thereby preventing the internal threaded column 4 from being immersed in water for a long time, thereby accelerating rust and affecting the service life of the threaded column 4.

[0043] The upper surface of the rubber block 5 is higher than the upper surface of the pedal 1. When the sole of a shoe or a foot steps on the upper end of the pedal 1, it may first contact with the rubber block 5 to increase friction.

[0044] The pedal 1 is a polyethylene sheet.

[0045] The advantages of using polyethylene materials to prepare hull parts at this stage are as follows:

[0046] Lightweight and high strength: The density of polyethylene material is low, usually 0.91-0.96g / cm 3This means that compared with traditional metal materials (such as steel and aluminum), the use of polyethylene can significantly reduce the overall weight of the hull, thereby improving fuel efficiency and reducing operating costs; despite its light weight, certain types of polyethylene (such as HDPE) have high tensile strength and impact strength, and can provide sufficient structural support; polyethylene shows excellent resistance to most acids, alkalis, and salt chemicals, and will not rust or rot due to seawater erosion, thus extending the service life of the hull; by adding stabilizers, polyethylene can be exposed to outdoor environments for a long time without being easily degraded, maintaining its physical properties unchanged.

[0047] Good processability: Polyethylene can be processed through a variety of processes such as injection molding, extrusion, blow molding, etc., which is convenient for manufacturing hull parts of various complex shapes, and the mold cost is relatively low; the use of hot melt welding technology can achieve strong and reliable seams and simplify the assembly process; at the same time, mechanical fasteners can also be used for rapid assembly.

[0048] Environmentally friendly and sustainable: Discarded polyethylene products can be recycled and turned into raw materials for reuse, reducing resource waste and environmental pollution; the production process produces fewer volatile organic compounds (VOCs), which meets the requirements of modern green manufacturing.

[0049] Economical: Compared with FRP or other composite materials, polyethylene has a lower cost and is suitable for large-scale production and popular applications. Due to its natural weather resistance and wear resistance, it requires less daily maintenance, reducing the total cost of long-term use.

[0050] Superior safety performance: The friction coefficient of the deck surface can be enhanced through special design or adding textures to ensure the safety of passengers when walking; even if the hull is damaged and water enters, the polyethylene material itself has a certain buoyancy, which increases the chance of survival in an emergency.

[0051] Strong adaptability: It can still maintain good flexibility and impact strength in cold conditions, and is suitable for polar expeditions or cold water operations; it is not easy to absorb algae and other marine organisms, reducing the workload of cleaning.

[0052] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for anti-skid treatment of polyethylene hull parts, characterized in that: The specific steps of the anti-skid treatment method of the polyethylene hull parts are as follows: Step 1: using a hole-opening device to open mounting holes on the pedal (1) of the polyethylene hull part, wherein the diameter of the mounting holes is 0.8-1 cm, and the depth of the holes is 2-3 cm, so that the mounting holes are evenly distributed on the upper surface of the pedal (1); Step 2: Use a hole-opening device to open a threaded hole at the bottom of the mounting hole. The diameter of the threaded hole is controlled to be 0.4-0.5 cm. Drain holes are opened at the bottom of the mounting hole and at both ends of the threaded hole. The two drain holes need to pass through the pedal (1). Step 3: Select a support block (3), and fix the threaded rod (2) at the lower end of the support block (3), open a socket on the upper surface of the support block (3), insert the rubber column (4) and the rubber block (5) inside the socket, and insert the rubber column (4) into the socket; Step 4: Threaded mounting holes are provided on the left and right sides of the support block (3), threaded columns (6) are provided inside the two threaded mounting holes, the rubber column (4) and the insertion hole are fixed by the two threaded columns (6), and finally the assembled anti-skid component is threadedly connected to the threaded hole through the threaded rod (2) at the lower end.

2. A polyethylene hull part, comprising a pedal (1), characterized in that: The upper side of the pedal (1) is provided with evenly arranged mounting holes, the bottom of the mounting hole is provided with a threaded hole, the inner thread of the threaded hole is provided with a threaded rod (2), the upper end of the threaded rod (2) is fixed with a support block (3), the upper side of the support block (3) is provided with a plug hole, the inner part of the plug hole is provided with a rubber column (4), the upper side of the rubber column (4) is fixed with a rubber block (5), the left and right sides of the support block (3) are provided with threaded mounting holes, the inner parts of the two threaded mounting holes are provided with threaded columns (6), and the rubber column (4) is fixedly connected to the support block (3) via the threaded column (6).

3. A polyethylene hull part according to claim 2, characterized in that: The rubber block (5) and the rubber column (4) are integrally formed.

4. A polyethylene hull part according to claim 2, characterized in that: Symmetrical water leakage holes are arranged at the bottom of the installation hole.

5. A polyethylene hull part according to claim 2, characterized in that: The upper surface of the rubber block (5) is higher than the upper surface of the pedal (1).

6. A polyethylene hull part according to claim 2, characterized in that: The pedal (1) is a polyethylene sheet.

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