Method for rapidly producing unmanned ship by using polyurea

Abstract

The invention discloses a method for rapidly producing an unmanned ship by using polyurea, and relates to the technical field of unmanned ship production.The method for rapidly producing the unmanned ship by using polyurea comprises the following steps that firstly, a main body is cut, specifically, a high-density buoyancy material is adopted to be cut into a preset ship body shape; secondly, a reinforcing structure is additionally arranged, supporting ribs are embedded into the foaming body, and reinforcing ribs are additionally arranged at the upper ends of the two sides of the hull; step 3, carving protruding grains, namely carving asymmetric rough protruding grains on the surface of the ship bottom by utilizing a carving machine; 4, coating an elastic coating, namely coating the hull by using a vertical coating machine and a horizontal coating machine, so that an elastic polyurea coating is attached to the surface of the hull; according to the scheme, the problems that an existing ship body is manufactured and formed through glass fibers and resin based on a mold, although the ship body is hard in texture, the ship body is likely to be broken, water enters the ship body when the ship body slightly touches reefs or collides, and potential safety hazards are generated are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned boat production, and in particular to a method for rapidly producing an unmanned boat by utilizing polyurea. Background Art

[0002] An unmanned lifeboat is a specialized lifeboat installed on a ship for rescuing passengers in the event of a shipwreck. It is propelled by oars, sails, or a motor. It often contains an air tank to ensure sufficient buoyancy even when flooded, ensuring the safety of the boat and its occupants.

[0003] Currently, there are methods for making unmanned lifeboats, such as announcement number CN106239933A, entitled "A Method for Vacuum Preparation of Lifeboat Hulls," which includes the following steps: first, preparing an upper hull mold and a lower hull mold for the lifeboat; then, coating the inner surfaces of the upper and lower hull molds with a layer of release wax from the inside out, respectively; then covering them with 3 to 8 layers of fiberglass cloth and a layer of nylon release cloth; and then sealing and covering them with a layer of nylon plastic film; evacuating the nylon plastic film through a vacuum tube; then, injecting unsaturated polyester resin into the nylon plastic film so that the fiberglass cloth is completely impregnated with the unsaturated polyester resin; and, after the unsaturated polyester resin solidifies, removing the nylon plastic film and release cloth from the upper and lower hull molds, respectively, taking out the upper and lower hulls, and splicing the upper and lower hulls together to obtain the lifeboat hull.

[0004] However, existing hulls are made of glass fiber and resin based on molds. Although they are hard, they are fragile. They are easily damaged by the slightest collision or collision, causing water to enter the hull, posing a safety hazard. To this end, we provide a method for quickly producing unmanned boats using polyurea. Summary of the Invention

[0005] The purpose of the present invention is to provide a method for rapidly producing unmanned boats using polyurea, so as to solve the problem raised in the above-mentioned background art that the existing boat hull is made of glass fiber and resin based on a mold, which is hard but fragile. It is easy to be damaged by a slight collision or collision, causing water to enter the hull, posing a safety hazard.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for rapidly producing an unmanned boat using polyurea, comprising the following steps:

[0007] Step 1: Cut the main body, using high-density buoyancy material to cut into the predetermined hull shape;

[0008] Step 2: Add reinforcement structure, embed support ribs inside the foam body, and add reinforcement ribs on the upper ends of both sides of the hull;

[0009] Step 3: Carve ridges. Use an engraving machine to carve asymmetrical rough ridges on the bottom surface of the boat.

[0010] Step four: coating the elastic coating, using vertical and horizontal coating machine to coat the ship, so that the surface of the ship is attached to the elastic polyurea coating;

[0011] Step five: complete the installation of functional components, set the arc-shaped flow guide in the recess of the bow, install the anchor rope fixing part, install the lightweight bearing plate at the stern, and open the drainage hole near the bottom of the stern.

[0012] Preferably, the high-density buoyancy material in step one is one of polystyrene, foamed material or foam.

[0013] Preferably, the support ribs and reinforcing ribs in step two are made of metal material.

[0014] Preferably, the vertical and horizontal coating machines in step four each include a chassis, a drive cover is installed above the rear end of the chassis, a pump seat is installed at the front end of the drive cover, a material cylinder is installed at the upper end of the pump seat, a control cabinet is installed outside the material cylinder, a pumping connector is installed at the front end of the pump seat, a double-motor drive seat is installed below the rear end of the chassis, a driving wheel is installed on each side of the double-motor drive seat, and a universal wheel is installed below the front end of the chassis on each side.

[0015] Preferably, a vertical electric guide rail is installed above the drive cover of the vertical coating machine, a horizontal electric guide rail is installed at the rear end of the material cylinder of the horizontal coating machine, a sliding block is drivingly connected to each of the vertical electric guide rail and the horizontal electric guide rail, a three-way connector is installed on the outer wall of the sliding block, a counter connector is installed at the upper end of the three-way connector, a spraying pipe is installed on each side of the three-way connector, a nozzle is installed at the end of the spraying pipe, and the counter connector is connected to the pumping connector through a hose.

[0016] Preferably, a laser grid scanning machine is installed on each side of the vertical electric guide rail and the horizontal electric guide rail through a bracket.

[0017] Preferably, a gray scale sensor is installed at the middle line position between the universal wheels on each side of the horizontal coating machine.

[0018] Preferably, a gray scale sensor is installed at the position of the inner hub between the universal wheels on each side of the vertical coating machine.

[0019] Preferably, a material cover is installed at the upper end of the material cylinder, a pull handle is installed on the outer wall of the material cover, and the material cover is rotatable with the material cylinder through a hinge on one side.

[0020] Preferably, a power module and a pump are installed inside the drive cover, the output end of the pump is drivingly connected to the pump seat, and a heat dissipation groove is provided on each side of the drive cover.

[0021] Compared with the prior art, the present application has the beneficial effects of:

[0022] (1) The ship body of the present application is directly pre-shaped and cut from an integrated high-density buoyancy material, which is one of polystyrene, foaming material or foam. The high-density buoyancy material is used as the ship body structure. Even if the ship body is damaged, the buoyancy of the foaming material remains effective. At the same time, the closed cell rate of the foaming material is > 95%, and water cannot penetrate into the inside, further reducing the possibility of sinking and improving safety. In terms of processing, the size of the ship body can be directly adjusted by cutting, without the need for mold opening, reducing the cost, improving the processing flexibility and production efficiency, and solving the problem that the existing ship body is made by glass fiber and resin based on mold forming, which is hard but fragile, and is easy to break when slightly touching the reef or colliding, leading to water entering the ship body and causing safety hazards.

[0023] (2) The ship body surface is attached with an elastic polyurea coating, which has the characteristics of waterproof, corrosion-resistant, explosion-resistant impact-resistant and acid and alkali-resistant. After uniformly covering the outer surface of the foaming body, a protective layer can be formed after the coating is solidified, thereby improving the toughness and service life of the ship body structure.

[0024] (3), the present application is first according to the pre-processing ship body volume draws spray track, around the ship trajectory annular spray white tracking line, for the ship side coating operation, along the ship centerline position spray white tracking straight line, for the ship bottom (top) coating operation, before coating, the ship body hoisting fixed on the hoisting frame, make the ship body in annular tracking line range, then the vertical coating machine and horizontal coating machine are arranged in annular tracking line and center tracking straight line position, after finishing, start vertical coating machine and horizontal coating machine operation, when running, the motor drive mechanism of two groups of coating machines controls the driving wheel to run, cooperate with the gray scale sensor at the front end of the coating machine to detect the white tracking line, because the white surface reflects high light intensity, the gray scale sensor has double probe group, two probes are respectively located on both sides of the white tracking line for detecting the difference of reflected light intensity, so as to judge the direction of the car deviating from the track, the sensor converts the resistance into voltage signal through the voltage dividing circuit, generates digital signal feedback to the controller after A / D converter processing, so that the coating machine can always move slowly along the tracking line, in the process, the laser grid scanning machine on the vertical coating machine and horizontal coating machine can emit laser array to the ship side and the ship bottom, based on the distance of laser array reaching the ship side and the ship bottom, the height of the ship side and the width of the ship bottom are judged, and the signal is fed back to the controller, the controller drives the electric guide rail on the vertical coating machine and horizontal coating machine to run based on the height and width parameters, so that the electric guide rail controls the slider to reciprocate in the height of the ship side and the width of the ship bottom, in the process of slider movement, the pump pumps the polyurea coating in the barrel to the nozzle on the slider, realizes the overall spraying of the ship body, the whole coating system does not need to configure large coating equipment, when the processing specification needs to be changed, only need to re-plan the tracking line, no need to recompile the program, and the straight coating machine and horizontal coating machine are portable equipment, high flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the unmanned ship production method flow chart of the present application;

[0026] Figure 2 It is the spraying state schematic diagram of the present application;

[0027] Figure 3 It is the vertical coating machine front structure schematic diagram of the present application;

[0028] Figure 4 It is the vertical coating machine back structure schematic diagram of the present application;

[0029] Figure 5 It is the horizontal coating machine structure schematic diagram of the present application;

[0030] In the figure: 1. Vertical coater; 2. Horizontal coater; 3. Chassis; 4. Drive cover; 5. Heat sink; 6. Pump seat; 7. Pumping joint; 8. Barrel; 9. Material cover; 10. Handle; 11. Hinge; 12. Control cabinet; 13. Dual motor drive seat; 14. Driving wheel; 15. Universal wheel; 16. Grayscale sensor; 17. Vertical electric guide rail; 18. Horizontal electric guide rail; 19. Slider; 20. T-joint; 21. Butt joint; 22. Spray pipe; 23. Nozzle; 24. Laser grid scanner. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] See also Figures 1-5 The present invention provides an embodiment of a method for rapidly producing an unmanned boat using polyurea, comprising the following steps:

[0033] Step 1: Cut the main body, using high-density buoyancy material to cut into the predetermined hull shape;

[0034] Step 2: Add a reinforcement structure, embed support ribs inside the foam body, and add reinforcement ribs on the upper ends of both sides of the hull. The support ribs and reinforcement ribs are made of metal materials. The setting of metal reinforcement ribs and support rib structure can significantly enhance the overall structural strength of the hull;

[0035] Step 3: Carve ridges. Use an engraving machine to carve asymmetrical rough ridges on the bottom surface of the boat. The asymmetrical rough ridges use a shark skin-like texture structure to reduce drag, insulate sound, and prevent slipping.

[0036] Step 4: Applying an elastic coating: Using a vertical coating machine 1 and a horizontal coating machine 2, the hull is coated with an elastic polyurea coating. The elastic polyurea coating is waterproof, anti-corrosion, explosion-proof, impact-resistant, and acid- and alkali-resistant. After evenly covering the outer surface of the foamed body, the coating forms a protective layer as it cures, thereby improving the toughness and service life of the hull structure.

[0037] Step 5: Complete the installation of functional components, set up an arc-shaped guide part in the bow depression to guide water flow and resist wind and waves, and install an anchor rope fixing part for anchor rope connection. Install a lightweight load-bearing plate at the stern, and open a drainage hole near the bottom of the stern to quickly drain water in the cabin.

[0038] Further, the high-density buoyancy material in step one is one of polystyrene, foaming material or foam, and the high-density buoyancy material is used as the ship body structure, so that even if the ship body is damaged, the buoyancy of the foaming material remains effective, and the closed cell rate of the foaming material is greater than 95%, so that water cannot penetrate into the inside, thereby further reducing the possibility of sinking and improving safety, and in the processing aspect, the size of the ship body can be directly adjusted by cutting without the need of opening a mold, thereby reducing the cost and improving the processing flexibility and production efficiency.

[0039] Please refer to Figures 2-5 The vertical coating machine 1 and the horizontal coating machine 2 in step four both include a chassis 3, a driving cover 4 is installed above the rear end of the chassis 3, a pump seat 6 is installed at the front end of the driving cover 4, a material cylinder 8 is installed at the upper end of the pump seat 6, a control cabinet 12 is installed outside the material cylinder 8, a pumping joint 7 is installed at the front end of the pump seat 6, a double-motor driving seat 13 is installed below the rear end of the chassis 3, and a driving wheel 14 is installed on each side of the double-motor driving seat 13, a universal wheel 15 is installed below the front end of the chassis 3, a vertical electric guide rail 17 is installed above the driving cover 4 of the vertical coating machine 1, a horizontal electric guide rail 18 is installed at the rear end of the material cylinder 8 of the horizontal coating machine 2, a sliding block 19 is drivingly connected to the vertical electric guide rail 17 and the horizontal electric guide rail 18, a three-way joint 20 is installed on the outer wall of the sliding block 19, a butt joint 21 is installed at the upper end of the three-way joint 20, a spraying pipe 22 is installed on each side of the three-way joint 20, a nozzle 23 is installed at the end of the spraying pipe 22, the butt joint 21 is connected to the pumping joint 7 through a hose, a laser grid scanning machine 24 is installed on each side of the vertical electric guide rail 17 and the horizontal electric guide rail 18 through a support, a material cover 9 is installed at the upper end of the material cylinder 8, a pull handle 10 is installed on the outer wall of the material cover 9, and the material cover 9 is rotatable with the material cylinder 8 through a hinge 11, a power module and a pump are installed in the driving cover 4, and the output end of the pump is drivingly connected to the pump seat 6, and a heat dissipation groove 5 is arranged on each side of the driving cover 4.

[0040] In the coating operation, first, a spraying tracking line is drawn according to the pre-processed ship body volume, such as Figure 2As shown, the white tracking line is sprayed around the hull trajectory ring, which is used for ship side coating operation, and the white tracking straight line is sprayed along the center line position of the hull, which is used for ship bottom (top) coating operation. Before coating, the ship body is first hoisted and fixed on the hoisting frame, so that the ship body is located within the range of the annular tracking line. Then the vertical coating machine 1 and the horizontal coating machine 2 are arranged at the annular tracking line and the central tracking straight line position respectively. After completion, the vertical coating machine 1 and the horizontal coating machine 2 are started to run. When running, the motor drive mechanism of the two groups of coating machines controls the driving wheel 14 to run, and cooperates with the gray scale sensor 16 at the front end of the coating machine to detect the white tracking line. Because the white surface reflects high light intensity, the gray scale sensor 16 has a double probe group, and the two probes are located on both sides of the white tracking line during detection, which is used to detect the difference of reflected light intensity, so as to judge the direction of the trolley deviating from the trajectory. The sensor converts the resistance into a voltage signal through a voltage dividing circuit, and generates a digital signal after A / D converter processing, which is fed back to the controller, so that the coating machine can always move slowly along the tracking line. In the process, the laser grid scanning machine 24 on the vertical coating machine 1 and the horizontal coating machine 2 can emit laser array to the ship side and the ship bottom. Based on the distance of the laser array reaching the ship side and the ship bottom, the height of the ship side and the width of the ship bottom are judged, and the signal is fed back to the controller. Based on the height and width parameters, the controller drives the electric guide rail on the vertical coating machine 1 and the horizontal coating machine 2 to run, so that the electric guide rail control sliding block 19 reciprocates within the range of the height of the ship side and the width of the ship bottom. In the process of sliding block movement, the pump pumps the polyurea coating in the barrel 8 to the nozzle 23 on the sliding block 19, realizing the overall spraying of the ship body (the ship body needs to be inverted when spraying the ship top). The whole coating system does not need to configure large coating equipment. When the processing specification needs to be changed, only the tracking line needs to be re-planned, without the need to re-write the program. Moreover, the straight coating machine 1 and the horizontal coating machine 2 are both portable equipment with high flexibility.

[0041] Please refer to Figure 3 and Figure 5 The gray scale sensor 16 is installed at the center line position between the universal wheels 15 on both sides of the horizontal coating machine 2, and the gray scale sensor 16 is installed at the position deviating from the inner hub between the universal wheels 15 on both sides of the vertical coating machine 1.

[0042] The gray scale sensor 16 of the horizontal coating machine 2 is installed at the middle part, which is convenient for the equipment to move accurately along the center line of the ship bottom. The gray scale sensor 16 of the vertical coating machine 1 is arranged at the position deviating from the inner hub, so that the vertical coating machine 1 deviates outward when moving around the annular tracking line, giving sufficient moving space to the horizontal coating machine 2 in the middle.

[0043] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. A method for rapidly producing an unmanned boat using polyurea, characterized in that: The following steps are involved: Step 1: Cut the main body, using high-density buoyancy material to cut into the predetermined hull shape; Step 2: Add reinforcement structure, embed support ribs inside the foam body, and add reinforcement ribs on the upper ends of both sides of the hull; Step 3: Carve ridges. Use an engraving machine to carve asymmetrical rough ridges on the bottom surface of the boat. Step 4: Applying the elastic coating, using a vertical coating machine (1) and a horizontal coating machine (2) to coat the hull so that the elastic polyurea coating adheres to the surface of the hull; Step 5: Complete the installation of functional components, set up an arc-shaped guide part in the bow depression, and install an anchor rope fixing part, install a lightweight load-bearing plate at the stern, and open a drainage hole near the bottom of the stern.

2. The method for rapidly producing an unmanned boat using polyurea according to claim 1, characterized in that: The high-density buoyancy material in step 1 is one of polystyrene, foam material or foam cotton.

3. The method for rapidly producing an unmanned boat using polyurea according to claim 2, characterized in that: The supporting ribs and reinforcing ribs in step 2 are both made of metal materials.

4. The method for rapidly producing an unmanned boat using polyurea according to claim 3, characterized in that: The vertical coating machine (1) and the horizontal coating machine (2) in the step 4 both include a chassis (3), a driving cover (4) is installed above the rear end of the chassis (3), a pump seat (6) is installed at the front end of the driving cover (4), a barrel (8) is installed at the upper end of the pump seat (6), a control cabinet (12) is installed on the outside of the barrel (8), a pumping joint (7) is installed at the front end of the pump seat (6), a dual-motor driving seat (13) is installed below the rear end of the chassis (3), and driving wheels (14) are installed on both sides of the dual-motor driving seat (13), and universal wheels (15) are installed on both sides below the front end of the chassis (3).

5. The method for rapidly producing an unmanned boat using polyurea according to claim 4, characterized in that: A vertical electric guide rail (17) is installed above the driving cover (4) of the vertical coating machine (1), and a horizontal electric guide rail (18) is installed at the rear end of the barrel (8) of the horizontal coating machine (2). The vertical electric guide rail (17) and the horizontal electric guide rail (18) are both transmission-connected with a slider (19), and a three-way joint (20) is installed on the outer wall of the slider (19). A butt joint (21) is installed at the upper end of the three-way joint (20), and spray pipes (22) are installed on both sides of the three-way joint (20). A nozzle (23) is installed at the end of the spray pipe (22), and the butt joint (21) is connected to the pumping joint (7) through a hose.

6. The method for rapidly producing an unmanned boat using polyurea according to claim 5, characterized in that: Laser grid scanners (24) are installed on the sides of the vertical electric guide rail (17) and the horizontal electric guide rail (18) via brackets.

7. The method for rapidly producing an unmanned boat using polyurea according to claim 6, characterized in that: A grayscale sensor (16) is installed at the center line position between the universal wheels (15) on both sides of the horizontal coating machine (2).

8. The method for rapidly producing an unmanned boat using polyurea according to claim 7, characterized in that: A grayscale sensor (16) is installed between the universal wheels (15) on both sides of the vertical coating machine (1) and at a position biased toward the inner wheel hub.

9. The method for rapidly producing an unmanned boat using polyurea according to claim 8, characterized in that: A material cover (9) is installed at the upper end of the material barrel (8), a pull handle (10) is installed on the outer wall of the material cover (9), and one side of the material cover (9) rotates with the material barrel (8) through a hinge (11).

10. The method for rapidly producing an unmanned boat using polyurea according to claim 8, characterized in that: A power module and a pump are installed inside the driving cover (4), and the output end of the pump is drivingly connected to a pump seat (6). Heat dissipation slots (5) are provided on both sides of the driving cover (4).

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