A protection device and a protection method

Abstract

The application discloses a protection device and a protection method, which are used for protecting a ship bottom device or a ship bottom opening hole. The protection device comprises a ring-shaped air cushion ring and a protective cover. The air cushion ring is flat when not inflated. The protective cover is connected with the air cushion ring. A plurality of permanent magnets are uniformly arranged on a surface of one side of the air cushion ring. An inflation port and an inflation device are further arranged on the same surface of the air cushion ring. The air outlet of the inflation device is the same as the inflation port. After the inflation device enters water, the inflation device inflates the air cushion ring through the inflation port and makes the air cushion ring expand. After the air cushion ring is inflated and expanded, the permanent magnets can be separated from a ship bottom plate. The protection device can effectively protect the ship bottom device and the opening hole during ship building. After the ship enters water, the protection device can be automatically separated from the ship body, thereby saving the time and cost of manually removing the protection device and avoiding losses caused by forgetting to remove the protection device by workers.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a protective device and a protective method. Background Technology

[0002] The bottom of a ship typically houses important navigation equipment and openings. This equipment includes depth sounders for measuring depth and speed logs for measuring speed. Their probes protrude from the bottom steel plates, as do the openings. During shipbuilding, cardboard, tape, and other materials are typically used to cover the exposed probes of the depth sounders and speed logs to prevent accidental scratches or contamination from paint or other materials. Plugs are used to prevent foreign objects from entering. These protective materials are removed before the ship is launched. Because these protective materials are tightly adhered to the hull surface and difficult to spot, forgetting to remove them can disrupt the normal operation of the depth sounders, speed logs, and related systems. In such cases, workers must be deployed to the water or the shipyard must return to remove them, resulting in significant losses for the shipyard. Summary of the Invention

[0003] In view of the deficiencies in the prior art, this application provides a protective device to solve the technical problem of increased ship manufacturing costs caused by workers forgetting to remove the bottom protection device.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0005] A protective device for protecting hull equipment or hull openings includes an annular air cushion and a protective cover. The air cushion is flat when uninflated. The protective cover is connected to the air cushion. Multiple permanent magnets are evenly arranged on one side of the surface of the air cushion. An inflation port and an inflation device are also provided on the same side of the air cushion. The air outlet of the inflation device is the same as the inflation port. After the inflation device is submerged in water, it inflates the air cushion through the inflation port, causing the air cushion to expand. When the uninflated air cushion is attracted to the outer hull plate by the permanent magnets, a protective space for the hull equipment or hull openings is formed between the protective cover, the air cushion, and the outer hull plate. When the air cushion is inflated, the permanent magnets can detach from the outer hull plate.

[0006] In one embodiment, the protective cover is a circular pad with the same diameter as the inner diameter of the air cushion, and the protective cover is connected to the inner center of the air cushion.

[0007] In one embodiment, the protective cover is made of rigid PVC plastic.

[0008] In one embodiment, four permanent magnets are uniformly disposed on one side of the surface of the air cushion.

[0009] In one embodiment, the permanent magnet is made of neodymium iron boron material.

[0010] In one embodiment, the inflation device is an automatic inflation device that immerses in water.

[0011] In one embodiment, the inflation device includes an inflation tank filled with compressible gas.

[0012] In one embodiment, the compressible gas filled in the gas tank is carbon dioxide.

[0013] In one embodiment, the bottom equipment is a depth sounder and / or a log.

[0014] The present invention also provides a protection method for protecting ship bottom equipment or ship bottom openings, employing the protection device described above, and comprising the following steps:

[0015] S1. Position the flat air cushion with the side without the permanent magnet facing the outer hull plate, so that the protective cover is aligned with the area of ​​the equipment to be protected or the opening.

[0016] S2. The air cushion is attached to the outer plate of the ship's bottom by a permanent magnet, and the protective cover covers the equipment or opening to be protected, so as to protect the equipment or opening of the ship's bottom.

[0017] S3. When the ship enters the water, the inflation device automatically inflates the air cushion ring through the inflation port, causing it to expand. After the air cushion ring expands, the permanent magnet that was originally attracted to the outer plate of the ship's bottom will be pushed away from the outer side of the ship's bottom plate, and the air cushion ring will detach from the outer plate of the ship's bottom plate.

[0018] S4. Retrieve the protective device floating on the water surface so that it can be reused later.

[0019] Compared with the prior art, this application has at least the following beneficial effects:

[0020] The protective device described in this application effectively protects the hull equipment and openings during shipbuilding, preventing accidental scratches or contamination / damage to the hull equipment from paint or other contaminants throughout the shipbuilding process, and preventing foreign objects from entering the hull openings. Once the ship is submerged, the protective device automatically inflates and detaches from the hull, saving time and costs associated with manual removal and preventing significant losses to the shipyard due to workers forgetting to remove the protective materials from the hull equipment and openings. Furthermore, the protective device is reusable and has low manufacturing costs. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the structure of the bottom equipment or opening protection device in the embodiments of this application when it is not inflated;

[0022] Figure 2 This is a schematic diagram of the structure of the bottom equipment or opening protection device in the embodiments of this application when it is inflated;

[0023] Figure 3 This is a schematic diagram of the bottom equipment or opening protection device being adsorbed onto the outer plate of the bottom of the ship in the embodiments of this application.

[0024] The following are specific explanations of the reference numerals in the attached diagram: 1. Air cushion; 2. Protective cover; 3. Inflation device; 4. Permanent magnet; 5. Inflation port; 6. Outer plating of the bottom of the boat. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0026] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0027] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be construed as indicating or implying relative importance. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0028] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical connection or internal connection between two components. They can be direct connection or indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0029] To better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0030] This embodiment provides a protective device for protecting a depth sounder or log meter installed on the bottom of a ship, such as... Figure 1 As shown, the protective device includes an annular air cushion 1 and a protective cover 2. The air cushion 1 is flat when it is not inflated. The protective cover 2 is connected to the air cushion 1. Multiple permanent magnets 4 are evenly arranged on one side of the surface of the air cushion 1. An inflation port 5 and an inflation device 3 are also provided on the same side of the surface of the air cushion 1. The air outlet of the inflation device 3 is the same as that of the inflation port 5. After the inflation device 3 enters the water, it inflates the air cushion 1 through the inflation port 5. When the uninflated air cushion 1 is attracted to the outer plate 6 of the bottom of the ship by the permanent magnets 4, a protective space for the depth sounder or odometer is formed between the protective cover, the air cushion and the outer plate of the bottom of the ship. When the air cushion 1 is inflated, the permanent magnets 4 can be detached from the outer plate 6 of the bottom of the ship.

[0031] like Figure 1 , 2 As shown, in this embodiment, the protective cover 2 is a circular pad with the same diameter as the inner diameter of the air cushion 1. The protective cover 2 is connected to the inner center of the air cushion 1. The protective cover 2 is made of PVC (Polyvinyl chloride) rigid plastic, which can better protect the depth sounder or odometer. Four permanent magnets are evenly arranged on one side of the air cushion. The permanent magnets are made of neodymium iron boron material.

[0032] The inflation device 3 is an automatic inflation device for water entry. The inflation device 3 includes an inflation tank, which is filled with compressible gases or mixtures such as carbon dioxide, nitrogen, or air.

[0033] This embodiment also provides a method for protecting ship bottom equipment or ship bottom openings, employing the above-mentioned protective device and including the following steps:

[0034] S1. Position the flat air cushion 1 with the side without the permanent magnet facing the outer plate 6 of the ship bottom, so that the protective cover 2 is aligned with the area of ​​the equipment to be protected or the opening.

[0035] S2, such as Figure 3 As shown, the air cushion 1 is attached to the outer plate 6 of the ship bottom by the permanent magnet 4, and the protective cover covers the equipment or opening to be protected, so as to protect the equipment or opening of the ship bottom.

[0036] S3. When the ship enters the water, the inflation device 3 automatically inflates the air cushion 1 through the inflation port 5, causing it to expand. The expansion of the air cushion 1 causes the multiple permanent magnets that were originally attracted to the outer plate 6 of the ship bottom to bounce away from the outer side of the outer plate 6 of the ship bottom, and the air cushion 1 separates from the outer plate 6 of the ship bottom.

[0037] S4. Retrieve the protective device that is floating on the water surface for easy reuse.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A protective device for protecting bottom equipment or bottom openings of a ship, characterized in that, The protective device includes an annular air cushion and a protective cover. The air cushion is flat when uninflated. The protective cover is connected to the air cushion. Multiple permanent magnets are evenly arranged on one side of the surface of the air cushion. An inflation port and an inflation device are also provided on the same side of the air cushion. The air outlet of the inflation device is the same as the inflation port. After the inflation device enters the water, it inflates the air cushion through the inflation port, causing the air cushion to expand. When the uninflated air cushion is attracted to the outer plate of the hull by the permanent magnets, a protective space for the hull equipment or hull openings is formed between the protective cover, the air cushion, and the outer plate of the hull. When the air cushion is inflated, it can detach the permanent magnets from the outer plate of the hull. The inflation device is an automatic inflation device that enters the water.

2. The protection device according to claim 1, characterized in that, The protective cover is a circular pad with the same diameter as the inner diameter of the air cushion, and the protective cover is connected to the inner center of the air cushion.

3. The protection device according to claim 1, characterized in that, The protective cover is made of rigid PVC plastic.

4. The protection device according to claim 1, characterized in that, Four permanent magnets are evenly arranged on one side of the air cushion.

5. The protection device according to claim 1, characterized in that, The permanent magnet is made of neodymium iron boron material.

6. The protection device according to claim 1, characterized in that, The inflation device includes an inflation tank filled with compressible gas.

7. The protection device according to claim 6, characterized in that, The compressible gas filled in the gas tank is carbon dioxide.

8. The protection device according to claim 1, characterized in that, The bottom equipment is a depth sounder and / or a log.

9. A protection method for protecting hull equipment or hull openings, characterized in that, The protective device as described in any one of claims 1-8 includes the following steps: S1. Position the flat air cushion with the side without the permanent magnet facing the outer hull plate, so that the protective cover is aligned with the area of ​​the equipment to be protected or the opening. S2. The air cushion is attached to the outer plate of the ship's bottom by a permanent magnet, and the protective cover covers the equipment or opening to be protected, so as to protect the equipment or opening of the ship's bottom. S3. When the ship enters the water, the inflation device automatically inflates the air cushion ring through the inflation port, causing it to expand. After the air cushion ring expands, the permanent magnet that was originally attracted to the outer plate of the ship's bottom will be pushed away from the outer side of the ship's bottom plate, and the air cushion ring will detach from the outer plate of the ship's bottom plate. S4. Retrieve the protective device floating on the water surface so that it can be reused later.

Images