Manufacturing method of aluminum-magnesium alloy hull

Abstract

In the manufacturing method of the aluminum-magnesium alloy hull involved in the present invention, a plurality of independent aluminum-magnesium alloy profiles for respectively manufacturing the left and right hull bottom shells are firstly manufactured in advance by a die-casting method, and a long strip of the bottom keel is manufactured in advance, and the safety fence of the side edge of the hull is processed in advance; in the assembly step, the first aluminum-magnesium alloy profile is first assembled into the left hull by means of a sealing strip and a bolt locking method, and the second aluminum-magnesium alloy profile is assembled into the right hull, and then the left hull and the right hull are respectively connected and locked with the bottom keel by means of bolts combined with sealing strips, at this time, the safety fence is connected by bolts on the side edge of the hull, and then other parts of the hull are assembled accordingly, that is, the bottom assembly is completed. The above manufacturing method of the aluminum-magnesium alloy hull is simple and efficient, which can not only ensure the sealing and structural strength of the hull, but also realize that each aluminum-magnesium alloy plate on the hull can be independently disassembled and replaced, thereby reducing the maintenance cost and ensuring that the hull after maintenance maintains the original structural strength.

Description

Technical Field

[0001] The invention relates to the technical field of small boats, and in particular to a method for manufacturing an aluminum-magnesium alloy hull. Background Art

[0002] A Chinese patent application with publication number CN112591008A discloses a water jet propulsion magnesium aluminum alloy spliced ​​boat, wherein the hull is made of magnesium aluminum alloy plates welded and spliced.

[0003] In the hull manufacturing method of the above patent, although the method of welding magnesium-aluminum alloy plates to each other ensures the structural strength, it is not conducive to local maintenance of the hull. After the two magnesium-aluminum alloy plates are welded to each other, it is difficult to disassemble them again. If the hull is partially deformed and damaged, for example, a magnesium-aluminum alloy plate of the hull is deformed or broken due to a collision, the method of welding magnesium-aluminum alloy plates into a hull in the prior art cannot be used to disassemble a single magnesium-aluminum alloy plate separately, and sheet metal repair or patching can only be performed directly on the hull, which is difficult to operate, and the repair effect, such as structural strength, is not as good as that of a new intact magnesium-aluminum alloy plate.

[0004] Therefore, how to improve the manufacturing method of aluminum-magnesium alloy hull to ensure the sealing and structural strength of the hull, and enable each aluminum-magnesium alloy plate on the hull to be independently disassembled and replaced, reduce maintenance costs, and ensure that the repaired hull maintains its original structural strength has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the present invention is: how to improve the manufacturing method of the aluminum-magnesium alloy hull so as to ensure the sealing and structural strength of the hull and realize that each aluminum-magnesium alloy plate on the hull can be independently disassembled and replaced, thereby reducing the maintenance cost and ensuring that the repaired hull maintains the original structural strength.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A method for manufacturing an aluminum-magnesium alloy hull comprises the following steps:

[0008] A plurality of first aluminum-magnesium alloy profiles are manufactured by die-casting, and the first aluminum-magnesium alloy profiles are connected to each other by sealing strips and bolts to manufacture a left half hull;

[0009] A plurality of second aluminum-magnesium alloy profiles are manufactured by die-casting, and the second aluminum-magnesium alloy profiles are connected to each other by sealing strips and bolts to manufacture the right half hull;

[0010] A keel is manufactured according to the curvature of the hull bottom, wherein the cross section of the keel is an inverted π shape;

[0011] Connect the left half hull to the keel of the hull bottom through sealing strips and bolts;

[0012] Connect the right half hull to the keel of the hull bottom through sealing strips and bolts;

[0013] Make a safety fence according to the curvature of the ship;

[0014] Connect the safety fence to the side edges of the left and right half hulls by bolts;

[0015] Assemble other parts of the hull.

[0016] The beneficial effects of the present invention are as follows: in the manufacturing method of the aluminum-magnesium alloy hull involved in the present invention, a plurality of independent aluminum-magnesium alloy profiles for respectively manufacturing the left and right hull bottom shells are firstly manufactured in advance by a die-casting method, and a long strip of bottom keel is manufactured in advance, and the safety fence of the side edge of the hull is pre-processed; in the assembly step, the first aluminum-magnesium alloy profile is first assembled into the left hull by means of sealing strips and bolt locking, and the second aluminum-magnesium alloy profile is assembled into the right hull, and then the left hull and the right hull are respectively connected and locked with the bottom keel by means of bolts combined with sealing strips, at this time, the safety fence is connected by bolts on the side edge of the hull, and then other parts of the hull are assembled accordingly, that is, the bottom assembly is completed. The above manufacturing method of the aluminum-magnesium alloy hull is simple and efficient, which can not only ensure the sealing and structural strength of the hull, but also realize that each aluminum-magnesium alloy plate on the hull can be independently disassembled and replaced, thereby reducing the maintenance cost and ensuring that the repaired hull maintains the original structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an aluminum-magnesium alloy hull manufactured by a method for manufacturing an aluminum-magnesium alloy hull according to a specific embodiment of the present invention;

[0018] Figure 2 An exploded view of the local structure of an aluminum-magnesium alloy hull manufactured by the method for manufacturing an aluminum-magnesium alloy hull according to a specific embodiment of the present invention;

[0019] Figure 3 It is a structural schematic diagram of two adjacent first aluminum-magnesium alloy profiles of a left hull of an aluminum-magnesium alloy hull manufactured by the method for manufacturing an aluminum-magnesium alloy hull according to a specific embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the keel structure of the bottom of an aluminum-magnesium alloy hull obtained by the method for manufacturing an aluminum-magnesium alloy hull according to a specific embodiment of the present invention;

[0021] Figure 5 for Figure 4 A magnified view of part A;

[0022] Description of labels:

[0023] 1. left half hull; 11. first aluminum-magnesium alloy profile; 12. first convex edge; 13. second convex edge; 14. third convex edge;

[0024] 2. right half hull; 21. second aluminum-magnesium alloy profile;

[0025] 3. Keel of the boat bottom; 31. Bottom plate; 32. Side plate;

[0026] 4. Safety fence;

[0027] 5. Sealing strip;

[0028] 6. Groove. DETAILED DESCRIPTION

[0029] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0030] Please refer to Figures 1 to 5 The specific embodiment of the present invention relates to a method for manufacturing an aluminum-magnesium alloy hull. The aluminum-magnesium alloy hull takes a speedboat hull as an example, and includes the following steps:

[0031] A plurality of first aluminum-magnesium alloy profiles 11 are manufactured by die-casting, and the first aluminum-magnesium alloy profiles 11 are connected to each other by sealing strips 5 and bolts to manufacture the left half hull 1;

[0032] A plurality of second aluminum-magnesium alloy profiles 21 are manufactured by die-casting, and the second aluminum-magnesium alloy profiles 21 are connected to each other by sealing strips 5 and bolts to manufacture the right half hull 2;

[0033] A keel 3 is manufactured according to the curvature of the hull bottom, wherein the cross section of the keel 3 is an inverted π shape;

[0034] Connect the left half hull 1 to the keel 3 of the hull bottom through the sealing strip 5 and bolts;

[0035] Connect the right half hull 2 ​​to the keel 3 of the hull bottom through the sealing strip 5 and bolts;

[0036] Make a safety fence 4 according to the arc of the ship;

[0037] Connect the safety fence 4 to the side edges of the left half hull 1 and the right half hull 2 ​​by bolts;

[0038] Assemble other parts of the hull.

[0039] As a preferred embodiment, the left half hull 1 and the right half hull 2 ​​are symmetrical to each other.

[0040] As a preferred embodiment, a first connection surface is provided in front and / or in the rear of the first aluminum-magnesium alloy profile 11, a first convex edge 12 extending toward the inner side of the hull is provided at the first connection surface, a plurality of bolt holes are provided at the first convex edge 12, and a groove 6 for connecting the sealing strip 5 is provided at the first connection surface;

[0041] The steps of connecting the first aluminum-magnesium alloy profiles 11 to each other through the sealing strip 5 and bolts to form the left half hull 1 are specifically as follows:

[0042] Glue is dispensed into the groove 6 of a first aluminum-magnesium alloy profile 11, and the sealing strip 5 is adhered to the groove 6; glue is dispensed into the groove 6 of another corresponding first aluminum-magnesium alloy profile 11, and the sealing strip 5 is adhered to the groove 6, so that the bolt holes on the opposite first flanges 12 of the two first aluminum-magnesium alloy profiles 11 correspond to each other; bolts are passed through the bolt holes, and the bolts are tightened with nuts to lock the two first aluminum-magnesium alloy profiles 11 with each other; other first aluminum-magnesium alloy profiles 11 are connected in the same manner as above to obtain the left half hull 1.

[0043] The aluminum-magnesium alloy hull is lightweight, has a small volume when immersed in water, has low friction between water and the hull, and has low forward resistance for the speedboat, thereby effectively increasing the boat's speed and improving battery utilization.

[0044] In the above process, the first aluminum-magnesium alloy profile 11 and the second aluminum-magnesium alloy profile 21 can be mass-produced by high-pressure casting, and the subsequent assembly is simple and convenient, and the daily output can reach 200-300 ships.

[0045] Aluminum-magnesium alloy material has excellent shock absorption properties. When receiving impact loads, it can absorb part of the energy to reduce the vibration of the hull. Aluminum-magnesium alloy has a good shielding effect and can ensure that electronic products inside the hull are protected from external magnetic field interference.

[0046] The above-mentioned manufacturing method of the aluminum-magnesium alloy hull is simple and efficient, which can not only ensure the sealing and structural strength of the hull, but also enable each aluminum-magnesium alloy plate on the hull to be independently disassembled and replaced, thereby reducing maintenance costs and ensuring that the repaired hull maintains its original structural strength.

[0047] As a preferred embodiment, the keel 3 includes a bottom plate 31 and two parallel side plates 32 connected to the bottom plate 31, the side plates 32 are provided with a plurality of bolt holes, and the outer side of the side plates 32 is provided with a groove 6 for connecting the sealing strip 5; the inner side of the first aluminum-magnesium alloy profile 11 is provided with a second flange 13 extending upward from the hull, and the second flange 13 is provided with bolt holes corresponding to the side plates 32;

[0048] The steps of connecting the left half hull 1 to the keel 3 of the bottom of the ship through the sealing strip 5 and bolts are specifically as follows:

[0049] Glue is applied in the groove 6 on the outside of the side plate 32 of the bilge keel 3 to connect the sealing strip 5 to the groove 6, and the second flange 13 of the left hull is fitted with the side plate 32 of the bilge keel 3, so that the bolt holes on the second flange 13 of the left hull correspond to the bolt holes on the side plate 32 of the bilge keel 3 one by one, and bolts are passed through the bolt holes and tightened with nuts to lock the left hull and a side plate 32 of the bilge keel 3 with each other.

[0050] As a preferred embodiment, the upper edge of the first aluminum-magnesium alloy profile 11 is provided with a third flange 14 extending toward the outside of the hull, the third flange 14 is provided with bolt holes, and the safety fence 4 is provided with bolt holes corresponding to the third flange 14;

[0051] The steps of connecting the safety fence 4 to the left half hull 1 by bolts are specifically as follows:

[0052] The bolts pass through the bolt holes of the third flange 14 and the safety fence 4, and are locked by nuts, so that the safety fence 4 and the upper edge of the left half hull 1 are locked to each other.

[0053] As a preferred embodiment, the material of the hull keel 3 is steel.

[0054] As a preferred embodiment, the safety fence 4 is made of steel.

[0055] When a part of the above aluminum-magnesium alloy hull is damaged, for example, when one of the first aluminum-magnesium alloy profiles 11 is broken due to impact, the first aluminum-magnesium alloy profile 11 can be disassembled by loosening the corresponding bolts and replaced with a corresponding new first aluminum-magnesium alloy profile 11. Compared with the traditional technology that requires sheet metal repair of the damaged part, the efficiency is greatly improved. Since it is convenient to replace the new aluminum-magnesium alloy profile as the bottom hull component, there is no need to consider the reduction in hull strength due to repair. The removed aluminum-magnesium alloy profile can also be independently repaired by sheet metal. Compared with the method of directly repairing the hull, the efficiency is greatly improved and the difficulty of repair is also greatly reduced.

[0056] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for manufacturing an aluminum-magnesium alloy hull, characterized in that: The following steps are involved: A plurality of first aluminum-magnesium alloy profiles are manufactured by die-casting, and the first aluminum-magnesium alloy profiles are connected to each other by sealing strips and bolts to manufacture a left half hull; A plurality of second aluminum-magnesium alloy profiles are manufactured by die-casting, and the second aluminum-magnesium alloy profiles are connected to each other by sealing strips and bolts to manufacture the right half hull; A keel is manufactured according to the curvature of the hull bottom, wherein the cross section of the keel is an inverted π shape; Connect the left half hull to the keel of the hull bottom through sealing strips and bolts; Connect the right half hull to the keel of the hull bottom through sealing strips and bolts; Make a safety fence according to the curvature of the ship; Connect the safety fence to the side edges of the left and right half hulls by bolts; Assembling other parts of the hull; The keel comprises a bottom plate and two parallel side plates connected to the bottom plate, the side plates are provided with a plurality of bolt holes, and the outer side of the side plates is provided with a groove for connecting the sealing strip; the inner side of the first aluminum-magnesium alloy profile is provided with a second convex edge extending upward from the hull, and the second convex edge is provided with bolt holes corresponding to the side plates; The steps of connecting the left half hull to the keel of the hull bottom through the sealing strip and bolts are specifically as follows: Dispense glue in the groove on the outside of the side plate of the bilge keel, connect the sealing strip to the groove, fit the second convex edge of the left hull with the side plate of the bilge keel, make the bolt holes on the second convex edge of the left hull correspond to the bolt holes on the side plate of the bilge keel one by one, pass the bolts through the bolt holes, and tighten the bolts with nuts to lock the left hull and one side plate of the bilge keel with each other.

2. The method for manufacturing an aluminum-magnesium alloy hull according to claim 1, characterized in that: The left half hull and the right half hull are symmetrical to each other.

3. The method for manufacturing an aluminum-magnesium alloy hull according to claim 1, characterized in that: A first connection surface is provided at the front and / or rear of the first aluminum-magnesium alloy profile, a first convex edge extending toward the inner side of the hull at the first connection surface, a plurality of bolt holes are provided at the first convex edge, and a groove for connecting a sealing strip is provided at the first connection surface; The steps of connecting the first aluminum-magnesium alloy profiles to each other through sealing strips and bolts to obtain the left half hull are specifically as follows: Glue is applied in the groove of a first aluminum-magnesium alloy profile and a sealing strip is adhered to the groove. Glue is applied in the groove of another corresponding first aluminum-magnesium alloy profile and the profile is adhered to the sealing strip so that the bolt holes on the opposite first flanges of the two first aluminum-magnesium alloy profiles correspond to each other one by one. Bolts are passed through the bolt holes and nuts are used to tighten the bolts so that the two first aluminum-magnesium alloy profiles are locked to each other. The other first aluminum-magnesium alloy profiles are connected in the same manner as above to obtain the left half hull.

4. The method for manufacturing an aluminum-magnesium alloy hull according to claim 1, characterized in that: The upper edge of the first aluminum-magnesium alloy profile is provided with a third convex edge extending toward the outside of the hull, the third convex edge is provided with a bolt hole, and the safety fence is provided with a bolt hole corresponding to the third convex edge; The steps of connecting the safety fence to the left half hull by bolts are specifically as follows: The bolts pass through the bolt holes of the third convex edge and the safety fence, and the bolts are locked by nuts, so that the safety fence and the upper edge of the left half hull are locked to each other.

5. The method for manufacturing an aluminum-magnesium alloy hull according to claim 1, characterized in that: The material of the keel is steel.

6. The method for manufacturing an aluminum-magnesium alloy hull according to claim 1, characterized in that: The material of the safety fence is steel.

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