CONNECTING STRUCTURE OF METAL MEMBER AND FIBERGLASS, AND WATERCRAFT BODY

Abstract

 A connecting structure of metal member and fiberglass, and a watercraft body, the metal member (11, 21, 31, 41) is provided with through holes (13, 24, 33, 43) penetrating the metal member (11, 21, 31, 41), and is provided with a first side and a second side along an axis direction of the through-holes (13, 24, 33, 43). The fiberglass comprises connecting fiber bundles (15, 26, 34, 44) and resins (14, 25, 44), the connecting fiber bundles (15, 26, 34, 44) pass through the through-holes (13, 24, 33, 43), both ends of the connecting fiber bundles (15, 26, 34, 44) are respectively located on the first side and second side of the metal members (11, 21, 31, 41), the resins (14, 25, 44) are covered on the surface of the metal members (11, 21, 31, 41) and outside the connecting fiber bundles (15, 26, 34, 44), and are filled in the through-holes (13, 24, 33, 43). The fiberglass in a watercraft component constituted by the connecting members is not easily stripped and detached to ensure that the metal members are not easily corroded.

Description

Technical Field

[0001] The present invention relates to the field of metal anticorrosion, in particular to a connecting structure of metal member and GFRP, and watercraft body.

Background

[0002] Most ships use metal hulls. However, in the marine environment, the ships are easily corroded due to the influence of seawater temperature, seawater salinity, marine atmospheric temperature and marine atmospheric humidity, especially the stern shaft frame connected with the propeller, which is immersed in the water for a long time and is located at the place where the water flows violently, the degree of corrosion is even more serious. Corrosion not only reduces the steel structure and strength of the ship, shortens the service life of the ship, but also increases the sailing resistance, reduces the speed and affects the service performance. More seriously, in the event of a perforation or cracking, it can also lead to the occurrence of a marine accident, resulting in a surprising loss.

[0003] At present, glass fiber reinforced plastic (GFRP) is often coated on the metal surface of the ship hull to prevent corrosion. The density of GFRP is small and the surface is smooth, which can effectively reduce the resistance and increase the sailing speed, and employ good anti-magnetic, sound insulation, electrical insulation properties and other characteristics. However, because GFRP and metal are two immiscible materials, when the use time is a little longer, GFRP will crack or even peel off from the metal surface, losing the anti-rust effect, and has to re-coat GFRP on the metal surface, the existing way of coating GFRP has a high maintenance cost, and reduces the shipping time, reducing production efficiency.

Technical Problems

[0004] A first object of the present invention is to provide a connecting structure metal member fastened in combination with GFRP.

[0005] A second object of the present invention is to provide a watercraft body having the above-described connecting structure of metal member and GFRP.

TECHNICAL SOLUTIONS

[0006] To achieve the first object of the present invention, the present invention provides a connecting structure of metal and GFRP, the metal member is provided with a through-hole, the through-hole penetrates the metal member, the metal member is provided with a first side and a second side along an axial direction of the through-holes; the GFRP comprises a connecting fiber bundle and a resin, the connecting fiber bundle passes through the through-hole, two ends of the connecting fiber bundle are respectively located on the first and second side of the metal member, the resin is wrapped on the surface of the metal member and outside the connecting fiber bundle, and the resin is filled in the through-hole.

[0007] A specific solution is that the metal member is provided with an edge around the through-hole; a first end of the connecting fiber bundle leads from the through-hole around the edge to a second side of the metal member, a second end of the connecting fiber bundle leads from the through-hole around the edge to a first side of the metal member.

[0008] A specific solution is that the connecting fiber bundle includes a plurality of connecting fibers, the first ends of the plurality of connecting fibers lead radially from the through-hole around the edge to a second side of the metal member, and the second ends of the plurality of connecting fibers lead radially from the through-hole around the edge to a first side of the metal member.

[0009] Another specific solution is that the connecting fiber bundle comprises glass fiber, carbon fiber, boron fiber, aramid fiber, alumina fiber or silicon carbide fiber.

[0010] Another specific solution is that resin comprises epoxy resin or an unsaturated resin.

[0011] Another specific solution is that the metal member is provided with a plurality of the through-holes, the through-holes are circular, the diameter of the through-holes is D, the linear distance between the centers of two adjacent the through-holes is A, and the A is 0.5D to 30D.

[0012] Another specific solution is that the metal member is provided with a plurality of the through-holes, the through-holes are circular, the diameter of the through-holes is D, and along the direction perpendicular to the edge, the linear distance from the center of the through-hole to the edge is B, and the B is 0.5D to 30D.

[0013] Another specific solution is that the metal member is provided with a plurality of the through-holes, the through-holes are circular, the diameter of the through-holes is D, the depth of the through-holes is C, the D is greater than or equal to 0.2C, the D is less than or equal to 30C.

[0014] To achieve the second object of the present invention, the present invention also provides a watercraft body having the above-described connecting structure of metal member and GFRP.

[0015] A specific solution is that the metal member in the connecting structure of metal member and GFRP is a rudder blade or a stern shaft frame.

BENEFICIAL EFFECT

[0016] In addition to passing through the through-hole so that the two ends are located at two sides, the connecting fiber bundle of the present invention can also have a first end of the connecting fiber bundle leading from the through-hole around the edge to the second side of the metal member, a second end of the connecting fiber bundle leading from the through-hole around the edge to the first side of the metal member, and the covering surface of the connecting fiber bundle is increased by respectively winding the two ends of the connecting fiber bundle to the metal member, namely, the connecting fiber bundle leading from the first side of the metal member to the second side of the metal member or leading from the second side of the metal member to the first side of the metal member. And by coating a resin on the surface of the metal member, filling the through-hole with the resin, using the mutual adhesion between the resin and the connecting fiber bundle to immobilize the position where the connecting fiber bundle is located on the first side of the metal member and the second side of the metal member, so that the resin is not easy to peel off and fall off from the first side of the metal member and the second side of the metal member, so as to better ensure that the metal member is not easy to corrode.

[0017] Further, since the first ends of the plurality of connecting fibers are led radially around the edge from the through-hole to the second side of the metal member, and the second ends of the plurality of connecting fibers are led radially around the edge from the through-hole to the first side of the metal member, a coverage area of the connecting fibers can be maximally covered on the first side and the second side of the metal member to maximally tighten the resin fibers located on the first side and the second side of the metal member to maximally ensure that the resin located on the first side of the metal member and the second side of the metal member does not peel off and fall off.

[0018] Further, since the rudder blade and the stern shaft frame need to be soaked in water during the operation of the ship, and the rudder blade and the stern shaft frame are arranged close to a propeller, the water flow passing through the rudder blade and the stern shaft frame is relatively turbulent, and the water flow easily impacts the GFRP on the rudder blade and the stern shaft frame, and easily causes the GFRP on the rudder blade and the stern shaft frame to peel off, so that the rudder blade and the stern shaft frame are corroded. Therefore, applying the connecting structure of the metal member and the GFRP to the rudder blade and the stern shaft frame helps to ensure that the rudder blade and the stern shaft frame are not corroded, and increases the service life of the rudder blade and the stern shaft frame.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 

Fig. 1 is a front view of the first embodiment of a connecting structure of metal member and GFRP of the present invention.

Fig. 2 is a sectional view taken along the line E-E in Fig. 1.

Fig. 3 is a side view of the second embodiment of a connecting structure of metal member and GFRP of the present invention.

Fig. 4 is a sectional view taken along the line F-F in Fig. 3.

Fig. 5 is a front view of the third embodiment of a connecting structure of metal member and GFRP of the present invention.

Fig. 6 is a sectional view of the fourth embodiment of a connecting structure of metal member and GFRP of the present invention.

[0020] Further description is made below to the invention with reference to the figures and the embodiments.

DETAILED DESCRIPTION OF THE INVENTION

First Embodiment:

[0021] With reference to Fig. 1 and Fig. 2, the metal member in the connecting structure of metal member and GFRP of the present embodiment is arranged as an elongated plate 11, a first edge 12 is provided around the elongated plate 11, wherein two side edges of the elongated plate 11 extend in the vertical direction, and along the extending direction of the elongated plate 11, two end edges of the elongated plate 11 are respectively arranged as arcs, that is, the first edge 12 is formed by connecting vertical edges 121 at two sides and the arc edges 122 at two ends.

[0022] The elongated plate 11 comprises a first side surface 111 and a second side surface 112 arranged opposite each other, the first side surface 111 and the second side surface 112 being connected to each other at a first edge 12 around the elongated plate 11, respectively. Three first through-holes 13 are provided in the elongated plate 11, the three first through-holes 13 are respectively arranged in a circular shape, and the three first through-holes 13 are respectively arranged in sequence along the extension direction of the elongated plate 11. It can be seen that each of the first through-holes 13 is surrounded by a first edge 12. Each of the first through-holes 13 penetrates from the first side surface 111 to the second side surface 112, respectively. The intervals between the centers of the three first through-holes 13 are equal along the extending direction of the elongated plate 11. The distance from the center of each of the first through-holes 13 to the vertical edges 121 on both sides is equal in the direction perpendicular to the extending direction of the elongated plate 11. In the extending direction of the elongated plate 11, the centers of the first through-holes 13 at both ends are equally spaced from the circular arc edges 122 at both ends of the elongated plate 11, respectively.

[0023] The diameter of the first through-hole 13 is D1, the linear distance between the centers of two adjacent first through-holes 13 is A1, the linear distance from the center of the first through-hole 13 to the first edge 12 along the direction perpendicular to the first edge 12 is B1, and the depth of the first through hole 13 is C1. Wherein A1 is 0.5D1 to 30D1, preferably A1 is D1 to 3D1. B1 is 0.5D1 to 30D1, preferably B1 is D1 to 3D1. D1 is greater than or equal to 0.2C1 and D1 is less than or equal to 30C1, preferably D1 is greater than or equal to C1 and D1 is less than or equal to 10C1.

[0024] With reference to Fig. 1 and Fig. 2, the GFRP in the connecting structure of metal member and GFRP of the present embodiment includes a first connecting fiber bundle and a first resin 14. Each of the first through-holes 13 is respectively penetrated with a first connecting fiber bundle. The first connecting fiber bundle comprises a plurality of first connecting fibers 15, the first ends 151 of the first connecting fibers 15 are provided laterally to the first side surface 111 of the elongated plate 11, and the second ends 152 of the first connecting fibers 15 are provided laterally to the second side surface 112 of the elongated plate 11. The first ends 151 of plurality of the first connecting fibers 15 lead from the first through-holes 13 radially around the first edge 12 to the side of the second side surface 112 of the elongated plate 11, and the second ends 152 of plurality of the first connecting fibers 15 lead from the first through-holes 13 radially around the first edge 12 to the side of the first side surface 111 of the elongated plate 11. The first resin 14 is coated on the surface of the elongated plate 11, the first resin 14 is filled in each of the first through-holes 13, and the first resin 14 and the first connecting fibers 15 are bonded to each other. Wherein the first connecting fibers 15 may comprise one or more of: glass fibers, carbon fibers, boron fibers, aramid fibers, alumina fibers and silicon carbide fibers. The first resin 14 may comprise an epoxy resin or an unsaturated resin.

Second Embodiment:

[0025] With reference to Fig. 3 and Fig. 4, the connecting structure of metal member and GFRP of the present invention is applied to the stern shaft frame, that is, the metal member in the present embodiment is the stern shaft frame 21 on the ship hull. The stern shaft frame 21 is a double-arm stern shaft frame, that is, a first support arm 211 and a second support arm 212 are provided on the stern shaft frame 21, the first support arm 211 and the second support arm 212 respectively extend in an oblique direction, along the extension direction of the first support arm 211 and the second support arm 212, one ends of the first support arm 211 and the second support arm 212 are respectively connected to the ship hull, and the other ends of the first support arm 211 and the second support arm 212 converge on the stern boss 22. And along the extension direction of the first support arm 211 and the second support arm 212, two sides of the first support arm 211 and the second support arm 212 are respectively provided with second edges 23, the second edges 23 located on two sides of the first support arm 211 are respectively separated by the connecting end portions of the first support arm 211, and the second edges 23 located on two sides of the second support arm 212 are respectively separated by the connecting end portions of the second support arm 212. The surfaces of the first support arm 211 and the second support arm 212 are respectively provided with a first arm surface and a second arm surface which are oppositely arranged. Taking the first support arm 211 as an example, the first arm surface 2111 and the second arm surface 2112 are connected to each other at the second edges 23 on both sides of the first support arm 211, respectively. A plurality of second through-holes 24 are provided on the first support arm 211, the second through-holes 24 are arranged in a circular shape, and each second through-hole 24 respectively penetrates from the first arm surface 2111 to the second arm surface 2112.

[0026] The diameter of the second through hole 24 is D2, the linear distance between the centers of two adjacent second through holes 24 is A2, in the direction perpendicular to the second edge 23, the linear distance from the center of the second through hole 24 to the second edge 23 is B2, and the depth of the second through hole 24 is C2. Wherein A2 is 0.5D2 to 30D2, preferably A2 is D2 to 3D2. B2 is 0.5D2 to 30D2, preferably B2 is D2 to 3D2. D2 is greater than or equal to 0.2C2 and D2 is less than or equal to 30C2, preferably D2 is greater than or equal to C2 and D2 is less than or equal to 10C2.

[0027] The GFRP in the present embodiment comprises a second connecting fiber bundle and a second resin 25, wherein each of the second through-holes 24 is respectively penetrated with a second connecting fiber bundle, the second connecting fiber bundle comprises a plurality of second connecting fibers 26, a first end of the second connecting fibers 26 is located at the side of the first arm surface 2111, and a second end of the second connecting fibers 26 is located at the side of the second arm surface 2112. The first ends of the plurality of the second connecting fibers 26 respectively lead from the second through-holes 24 radially around the second edges 23 on both sides of the first support arm 211 to the side of the second arm surface 2112; the second ends 261 of the plurality of the second connecting fibers 26 respectively lead from the second through-holes 24 radially around the second edges 23 on both sides of the first support arm 211 to the side of the first arm surface 2111, the second resin 25 is coated on the surface of the support arm, and the second through holes 24 are filled with the second resin 25, wherein the second resin 25 and the second connecting fibers 26 are bonded to each other. The second connecting fiber 26 may comprise a glass fiber, a carbon fiber, a boron fiber, an aramid fiber, an alumina fiber or a silicon carbide fiber. The second resin 25 may comprise an epoxy resin or an unsaturated resin. Referring to Fig. 3, the first support arm 211 is sectioned in the H-H direction, and the sectional view of the first support arm 211 is the same as the structure shown in Fig. 2.

Third Embodiment:

[0028] Similarly, with reference to Fig. 5, when the connecting structure of the metal member and the GFRP of the present invention is applied to a rudder blade, that is, the metal member in the present embodiment is a rudder blade 31 on a ship hull. Since only one end of the rudder blade 31 is connected to the ship hull, a third edge 32 is provided around a connection end of the rudder blade 31. The rudder blade 31 comprises a third side surface 311 and a fourth side surface (not shown in the figure) which are arranged opposite to each other, wherein the rudder blade 31 is provided with a third through-hole 33 which is arranged in a circular shape, and the third through hole 33 penetrates from the third side surface 311 to the fourth side surface. The third side surface 311 and the fourth side surface are connected to each other at the third edge 32.

[0029] The diameter of the third through-hole 33 is D3, the linear distance between the centers of two adjacent third through-holes 33 is A3, in the direction perpendicular to the third edge 32, the linear distance from the center of the third through-hole 33 to the third edge 32 is B3, and the depth of the third through-hole 33 is C3. Wherein A3 is 0.5D3 to 30D3, preferably A3 is D3 to 3D3. B3 is 0.5D3 to 30D3, preferably B3 is D3 to 3D3. D3 is greater than or equal to 0.2C3 and D3 is less than or equal to 30C3, preferably D3 is greater than or equal to C3 and D3 is less than or equal to 10C3.

[0030] The GFRP in the present embodiment comprises a third connecting fiber bundle and a third resin (not shown in the figure), and the third connecting fiber bundle is provided in the third through-hole 33, wherein the third connecting fiber bundle comprises a plurality of third connecting fibers 34, a first end of the third connecting fibers 34 is located at the side of the third side surface 311, and a second end of the third connecting fibers 34 is located at the side of the fourth side surface. The first ends of the plurality of the third connection fibers 34 respectively lead from the third through-holes 33 radially around the third edge 32 of the rudder blade 31 to the side of the fourth side surface, and the second ends 341 of the plurality of the third connection fibers 34 respectively lead from the third through-holes 33 radially around the third edge 32 of the rudder blade 31 to the side of the third side surface 311. The rudder blade 31 is further coated with the third resin, and the third through-hole 33 is filled with the third resin, wherein the third resin and the third connecting fiber 34 are bonded to each other. Wherein the third connecting fiber 34 may comprise a glass fiber, a carbon fiber, a boron fiber, an aramid fiber, an alumina fiber or a silicon carbide fiber. The third resin may comprise an epoxy resin or an unsaturated resin. Referring to Fig. 5, the rudder blade 31 is sectioned in the I-I direction, and the sectional view of the rudder blade 31 is the same as the structure shown in Fig. 2.

Embodiment 4:

[0031] In addition to the connecting fiber bundle being able to be wound around the edge of the metal member, also as shown in figure 6, the metal member 41 is provided with a plurality of through-holes 43, in addition to passing through different through-holes 43, the two ends of the connecting fiber bundle 42 are respectively located on the first side and the second side of the metal member, and since the length of the metal member is relatively long, it is not necessary that the connecting fiber bundle to be wound around the edge of the metal member, the resin 44 can be wrapped around the surface of the metal member and outside the connecting fiber bundle, and the resin 44 is filled in the plurality of the through-holes 43. This can also achieve the object of the present invention.

[0032] The above-described embodiments are merely preferred examples of the present invention and are not intended to limit the scope of the present invention. Therefore, it is intended that the present invention cover the modifications and variations according to the range applied in the invention, shall fall within the scope of the claims of the present invention.

Industrial Applicability

[0033] According to the hull of the present invention, the hull of a vessel such as a fishing boat and a yacht can be provided with a metal member such as a rudder blade or a stern shaft frame, and since the present invention uses a special connecting structure of a metal member and GFRP, the two ends of the connecting fiber bundle can respectively exert a mutually tensioning force on the resin on the first side of the metal member and the second side of the metal member by means of the connecting fiber bundle and the resin provided in the GFRP, so that the resin cannot be easily stripped from the metal member to ensure that the metal member is not corroded, thereby extending the service life of the vessel.

Claims

1. A connecting structure of a metal member and GFRP, characterized in that:

the metal member is provided with a through-hole, the through-hole penetrates the metal member,

the metal member is provided with a first side and a second side along an axial direction of the through-holes;

the GFRP comprises a connecting fiber bundle and a resin, the connecting fiber bundle passes through the through-hole,

two ends of the connecting fiber bundle are respectively located on the first and second side of the metal member, the resin is wrapped on the surface of the metal member and outside the connecting fiber bundle, and the resin is filled in the through-hole.

2. The connecting structure of metal member and GFRP of claim 1, wherein:

the metal member is provided with an edge around the through-hole;

a first end of the connecting fiber bundle leads from the through-hole around the edge to a second side of the metal member, a second end of the connecting fiber bundle leads from the through-hole around the edge to a first side of the metal member.

3. The connecting structure of metal member and GFRP of claim 2, wherein:
the connecting fiber bundle includes a plurality of connecting fibers, the first ends of the plurality of connecting fibers lead radially from the through-holes around the edge to a second side of the metal member, and the second ends of the plurality of connecting fibers lead radially from the through-holes around the edge to a first side of the metal member.

4. The connecting structure of metal member and GFRP of anyone of claims 1 to 3, wherein:
the connecting fiber bundle is a glass fiber, a carbon fiber, a boron fiber, an aramid fiber, an alumina fiber or a silicon carbide fiber.

5. The connecting structure of metal member and GFRP of anyone of claims 1 to 3, wherein:
the resin is an epoxy resin or an unsaturated resin.

6. The connecting structure of metal member and GFRP of anyone of claims 1 to 3, wherein:
the metal member is provided with a plurality of the through-holes, the through-holes are circular, the diameter of the through-holes is D, the linear distance between the centers of two adjacent the through-holes is A, and the A is 0.5D to 30D.

7. The connecting structure of metal member and GFRP of anyone of claims 1 to 3, wherein:
the metal member is provided with a plurality of the through-holes, the through-holes are circular, the diameter of the through-holes is D, and along the direction perpendicular to the edge, the linear distance from the center of the through-hole to the edge is B, and the B is 0.5D to 30D.

8. The connecting structure of metal member and GFRP of claim anyone of claims 1 to 3, wherein:
the metal member is provided with a plurality of the through-holes, the through-holes are circular, the diameter of the through-holes is D, the depth of the through-holes is C, the D is greater than or equal to 0.2C, the D is less than or equal to 30C.

9. A watercraft body characterized in that:
the watercraft body is provided with the connecting structure of metal member and GFRP of anyone of claims 1 to 8.

10. The watercraft body of claim 9, wherein:
the metal member in the connecting structure of metal member and GFRP is a rudder blade or a stern shaft frame.

Drawing