Upper-layer vehicle deck of light-weight roll-on-roll-off ship

Abstract

The invention provides a light-weight roll-on-roll-off ship upper-layer vehicle deck which comprises a steel beam frame and a plurality of special-shaped plate structure units, the steel beam frame is of a grid type structure, the special-shaped plate structure units are arranged in grids respectively, and the peripheral sides of the special-shaped plate structure units are connected with the steel beam frame structure on the peripheral side of each grid; a plurality of vehicle binding holes are formed in each special-shaped plate structure unit in a matrix mode. The upper-layer vehicle deck of the light-weight roll-on-roll-off ship can be installed and built in a modular mode, the workload of fire work and correspondingly generated deck welding deformation are reduced, and the ship type building efficiency can be improved; the weight of the multi-layer deck of the upper cargo hold can be reduced, so that the ship energy consumption and harmful particle emission are reduced, the ship is energy-saving and environment-friendly, and the ship type competitiveness is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of shipbuilding, and in particular relates to an upper vehicle deck of a lightweight roll-on / roll-off ship. Background Art

[0002] Car transport ro-ro ships are specially used for transporting cars and trucks. Their car cargo holds are divided by multiple layers of vehicle decks. The upper cargo hold is only used to load small cars, and the lower cargo hold can be used to load small cars and trucks. During transportation, the vehicles are fastened to the deck lashing holes with lashing parts.

[0003] The vehicle deck of car carriers is usually designed with a steel plate-beam composite structure. Cutting, welding and pyrotechnic operations inevitably cause structural deformation, especially for the upper vehicle deck which adopts a thin plate frame design due to its small load. Deformations such as wave-shaped, skinny-horse-shaped, and partial concave of the lashing holes caused by pyrotechnic operations have become a major difficulty that restricts the construction efficiency of car carriers and affects product quality. Summary of the invention

[0004] In view of the above problems, the present invention provides a lightweight upper vehicle deck of a ro-ro ship, which reduces the weight of the multi-layer decks of the upper cargo hold, thereby reducing the ship's energy consumption and harmful particulate emissions, which is beneficial to energy conservation and environmental protection of the ship and improves the competitiveness of the ship type.

[0005] To achieve the above object, the present invention adopts the following technical solution: A lightweight roll-on / roll-off ship upper vehicle deck comprises a steel beam frame and a plurality of special-shaped plate structural units, wherein the steel beam frame is in a grid structure, a plurality of the special-shaped plate structural units are respectively placed in a grid, and the peripheral sides of the special-shaped plate structural units are connected to the steel beam frame structure on the peripheral sides of each grid; a plurality of vehicle lashing holes are arranged in a matrix on each of the special-shaped plate structural units.

[0006] Furthermore, the steel beam frame is a cross-beam frame structure composed of a plurality of first I-beams with cross sections along the length direction of the ship and a plurality of second I-beams with cross sections along the width direction of the ship. The plurality of first I-beams are evenly arranged along the width direction of the ship, and the plurality of second I-beams are evenly arranged along the length direction of the ship.

[0007] Furthermore, the number of the first I-beams is a, and the number of the second I-beams is b, the number a is determined by the cargo hold width m and the car body width n, and the value of a is equal to the calculated value of (m / n) rounded up; the number b is determined by the number f of strong ribs within the cargo hold along the ship length, and the second I-beams are evenly arranged at every two strong ribs within the cargo hold length, and the value of b is equal to f / 2.

[0008] Furthermore, the special-shaped plate structural unit includes an inverted trapezoidal cavity body whose longitudinal section and cross section are both inverted trapezoidal, and connecting wing plates are provided on the surrounding sides of the upper end surface of the inverted trapezoidal cavity body, the upper end surface of the connecting wing plate and the upper end surface of the inverted trapezoidal cavity body are located on the same horizontal plane, and the lower end surface of the connecting wing plate is glued to the upper end surface of the first I-beam and the upper transverse plate of the second I-beam; a filler is provided inside the inverted trapezoidal cavity body.

[0009] Furthermore, the inverted trapezoidal cavity body and the connecting wing plate are integrally formed, and an end surface of the connecting wing plate connected to the inverted trapezoidal cavity body and the inclined side surface of the inverted trapezoidal cavity body are located on the same inclined side surface; the longitudinal section of the cavity inside the inverted trapezoidal cavity body is an inverted trapezoid, and the angles between two adjacent side walls in the inverted trapezoidal cavity are both rounded.

[0010] Furthermore, the binding hole matrix on each of the special-shaped plate structural units is i rows * j columns, preferably, i is 4, and j is 10; the binding holes include an upper circular hole portion and a lower trapezoidal hole portion with a trapezoidal longitudinal cross-section, the diameter of the circular hole portion is d, the upper end face of the trapezoidal hole portion coincides with the lower end face of the circular hole portion, the width of the upper end face of the trapezoidal hole portion is 2d, and the upper end hole of the trapezoidal hole portion is coaxial with the circular hole portion and has the same diameter, and the diameter of the lower end hole of the trapezoidal hole portion is 4d.

[0011] Furthermore, the height of the circular hole portion is the same as the thickness of the connecting wing plate, and the inclination angle of the inclined side wall of the trapezoidal hole portion is the same as the inclination angle of the inclined side wall of the inverted trapezoidal cavity body.

[0012] Furthermore, an aluminum alloy structure with the same contour as the inner contour of the binding hole is provided inside the binding hole, the lower end of the aluminum alloy structure is located between the lower port and the lower port of the trapezoidal hole portion, the upper end of the aluminum alloy structure is located between the upper port and the lower port of the circular hole portion, and the outer peripheral side wall of the aluminum alloy structure of the binding hole is glued to the inner side wall of the binding hole; a bottom sealing plate is provided in the lower port of the aluminum alloy structure.

[0013] When tying a car, the deck end lashing hook acts on the aluminum alloy structure to ensure that the lashing point has sufficient strength. Aluminum alloy is easy to process and has good structural strength. The specific function is to bear the load of the lashing piece (one end of the lashing piece is fixed to the car when in use, and the other end is hooked into the lashing hole with a lashing hook to withstand the tension generated by the shaking of the ship during operation). If the aluminum alloy structure is not set, the fiberglass plate will be hooked and damaged.

[0014] Furthermore, 4 to 5 emergency protection structures are installed at intervals below the special-shaped plate structural unit, and the 4 to 5 emergency protection structures are arranged at intervals along the ship width direction. The two ends of the emergency protection structure along the ship width direction are welded to the lower end surface of the upper transverse plate of the second I-beam; the emergency protection structure is a groove-shaped folded flat steel, and is the same as the lower contour line of the longitudinal section of the special-shaped plate structural unit.

[0015] Furthermore, the filler is made of PVC material, and the special-shaped plate structural unit is made of glass fiber reinforced plastic.

[0016] The upper vehicle deck of the lightweight ro-ro ship described in the present invention is composed of a steel beam frame and a special-shaped plate structural unit made of a lightweight composite material. The steel beam frame is used to ensure that the deck has the total longitudinal strength required for the safe operation of the ship; compared with the traditional all-steel structural deck, the weight of the single-layer deck is reduced by about 60t. The special-shaped plate structural unit made of lightweight composite materials is glued to the steel beam panel by glue, which can fundamentally solve the deformation of the deck plate caused by pyrotechnics, and then the deformation correction process can be cancelled, which significantly improves the ship construction efficiency. The inside of the lashing hole is provided with an aluminum alloy structure with the same profile as the inner contour of the lashing hole, which can well withstand the tension generated by tying a car. In summary, the upper vehicle deck of the ro-ro ship of the present invention can be installed and constructed in a modular manner, reducing the amount of pyrotechnics and the corresponding deck welding deformation, which is conducive to improving the ship construction efficiency; it can significantly reduce the weight of the multi-layer deck of the upper cargo hold, thereby reducing the ship's energy consumption and harmful particulate emissions, which is conducive to energy saving and environmental protection of the ship, and improving the competitiveness of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of a lightweight ro-ro ship deck in the ship width direction according to the present invention; Figure 2 yes Figure 1 Schematic diagram of a typical horizontal section of a deck; Figure 3 It is a schematic diagram of the connection structure of the special-shaped plate structural unit and its steel beam frame according to the present invention; Figure 4 It is a structural schematic diagram of the binding hole described in the present invention.

[0018] Among them, 1-the first I-beam, 2-the second I-beam, 3-the special-shaped plate structural unit, 31-the inverted trapezoidal cavity body, 32-the connecting wing plate, 33-the PVC material filler, 34-the binding hole, 341-the circular hole part, 342-the trapezoidal hole part, 4-the emergency protection structure, 5-the aluminum alloy structure, and 6-the bottom sealing plate. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1-Figure 4As shown, a lightweight ro-ro ship upper vehicle deck comprises a steel beam frame and a plurality of special-shaped plate structure units 3, wherein the steel beam frame is in a grid structure, the special-shaped plate structure units 3 are made of glass fiber reinforced plastics, and the plurality of special-shaped plate structure units 3 are respectively placed in a grid, and the peripheral side of the special-shaped plate structure unit 3 is connected to the steel beam frame structure on the peripheral side of each grid; a plurality of lashing holes 34 are arranged in a matrix on each of the special-shaped plate structure units 3, and the matrix of the lashing holes 34 on each of the special-shaped plate structure units 3 is i rows and j columns, preferably, i is 4 and j is 10; The steel beam frame is a cross-beam frame structure composed of a plurality of first I-beams 1 with cross sections along the length direction of the ship and a plurality of second I-beams 2 with cross sections along the width direction of the ship. The plurality of first I-beams 1 are evenly arranged along the width direction of the ship, and the plurality of second I-beams 2 are evenly arranged along the length direction of the ship; the number of the first I-beams 1 is a, and the number of the second I-beams 2 is b, the number a is determined by the cargo hold width m and the car body width n, the value of a is equal to the calculated value of (m / n) rounded up, in this embodiment, m is 17m, n is 1.9m, and the number of I-beams along the length direction of the ship is 9; the number b is determined by the number f of strong ribs within the cargo hold along the length of the ship, and the second I-beams 2 are evenly arranged between every two strong ribs within the length of the cargo hold, and the value of the number b is equal to f / 2, in this embodiment, f is 70, and b is 35.

[0021] The special-shaped plate structural unit 3 includes an inverted trapezoidal cavity body 31 whose longitudinal section and cross section are both inverted trapezoidal, and connecting wing plates 32 are provided on the surrounding sides of the upper end surface of the inverted trapezoidal cavity body 31. The upper end surface of the connecting wing plate 32 and the upper end surface of the inverted trapezoidal cavity body 31 are located on the same horizontal plane, and the lower end surface of the connecting wing plate 32 is glued to the upper end surface of the upper transverse plate of the first I-beam 1 and the second I-beam 2; a PVC material filler 33 is provided inside the inverted trapezoidal cavity body 31.

[0022] The inverted trapezoidal cavity main body 31 and the connecting wing plate 32 are integrally formed, and the end surface of the connecting wing plate 32 connected to the inverted trapezoidal cavity main body 31 is located on the same inclined side surface as the inclined side surface of the inverted trapezoidal cavity main body 31; the longitudinal section of the internal cavity of the inverted trapezoidal cavity main body 31 is an inverted trapezoid, and the angles between two adjacent side walls in the inverted trapezoidal cavity are both rounded.

[0023] The binding hole 34 includes an upper circular hole portion 341 and a lower trapezoidal hole portion 342 whose longitudinal section is trapezoidal, the diameter of the circular hole portion 341 is d, the upper end face of the trapezoidal hole portion 342 coincides with the lower end face of the circular hole portion 341, the upper end face width of the trapezoidal hole portion 342 is 2d, and the upper end hole of the trapezoidal hole portion 342 is coaxial with the circular hole portion 341 and has the same diameter, and the lower end hole diameter of the trapezoidal hole portion 342 is 4d; the height of the circular hole portion 341 is the same as the thickness of the connecting wing plate 32, and the inclination angle of the inclined side wall of the trapezoidal hole portion 342 is the same as the inclination angle of the inclined side wall of the inverted trapezoidal cavity body 31.

[0024] 4 to 5 emergency protection structures 4 are installed at intervals below the special-shaped plate structural unit 3, and the 4 to 5 emergency protection structures 4 are arranged at intervals along the ship width direction. The two ends of the emergency protection structure 4 along the ship width direction are welded to the lower end surface of the upper transverse plate of the second I-beam 2; the emergency protection structure 4 is a groove-shaped folded flat steel, and is the same as the lower contour line of the longitudinal section of the special-shaped plate structural unit 3.

[0025] An aluminum alloy structure 5 having the same inner contour as the binding hole 34 is provided inside the binding hole 34, the lower end of the aluminum alloy structure is located between the lower end and the lower end of the trapezoidal hole portion 342, the upper end of the aluminum alloy structure is located between the upper end and the lower end of the circular hole portion 341, and the outer peripheral side wall of the aluminum alloy structure of the binding hole 34 is glued to the inner side wall of the binding hole 34; a bottom sealing plate 6 is provided in the lower end of the aluminum alloy structure.

[0026] Those skilled in the art should understand that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightweight ro-ro ship upper vehicle deck, characterized in that: It includes a steel beam frame and multiple special-shaped plate structural units. The steel beam frame is a grid structure. Multiple special-shaped plate structural units are respectively placed in a grid. The peripheral side of the special-shaped plate structural unit is connected to the steel beam frame structure on the peripheral side of each grid. Multiple vehicle tying holes are arranged in a matrix on each of the special-shaped plate structural units.

2. The lightweight ro-ro ship upper vehicle deck according to claim 1, characterized in that: The steel beam frame is a cross-beam frame structure composed of multiple first I-beams with cross sections along the length direction of the ship and multiple second I-beams with cross sections along the width direction of the ship. The multiple first I-beams are evenly arranged along the width direction of the ship, and the multiple second I-beams are evenly arranged along the length direction of the ship.

3. The upper vehicle deck of a lightweight ro-ro ship according to claim 2, characterized in that: The number of the first I-beams is a, and the number of the second I-beams is b. The number a is determined by the cargo hold width m and the car body width n, and the value of a is equal to the calculated value of (m / n) rounded up; the number b is determined by the number f of strong ribs within the cargo hold length. The second I-beams are evenly arranged between every two strong ribs within the cargo hold length, and the value of b is equal to f / 2.

4. The upper vehicle deck of a lightweight ro-ro ship according to claim 2, characterized in that: The special-shaped plate structural unit includes an inverted trapezoidal cavity body whose longitudinal section and cross section are both inverted trapezoidal, and connecting wing plates are provided on the surrounding sides of the upper end surface of the inverted trapezoidal cavity body. The upper end surface of the connecting wing plate and the upper end surface of the inverted trapezoidal cavity body are located on the same horizontal plane, and the lower end surface of the connecting wing plate is glued to the upper end surface of the first I-beam and the upper transverse plate of the second I-beam; a filler is provided inside the inverted trapezoidal cavity body.

5. The upper vehicle deck of a lightweight ro-ro ship according to claim 4, characterized in that: The inverted trapezoidal cavity body and the connecting wing plate are integrally formed, and the end surface of the connecting wing plate connected to the inverted trapezoidal cavity body and the inclined side surface of the inverted trapezoidal cavity body are located on the same inclined side surface; the longitudinal section of the cavity inside the inverted trapezoidal cavity body is an inverted trapezoid, and the angles between two adjacent side walls in the inverted trapezoidal cavity are both rounded.

6. The upper vehicle deck of a lightweight ro-ro ship according to claim 5, characterized in that: The binding hole matrix on each of the special-shaped plate structural units is i rows and j columns, i is 4, and j is 10; the binding holes include an upper circular hole portion and a lower trapezoidal hole portion with a trapezoidal longitudinal cross-section, the diameter of the circular hole portion is d, the upper end face of the trapezoidal hole portion coincides with the lower end face of the circular hole portion, the width of the upper end face of the trapezoidal hole portion is 2d, and the upper end hole of the trapezoidal hole portion is coaxial with the circular hole portion and has the same diameter, and the lower end hole diameter of the trapezoidal hole portion is 4d.

7. The upper vehicle deck of a lightweight ro-ro ship according to claim 6, characterized in that: The height of the circular hole portion is the same as the thickness of the connecting wing plate, and the inclination angle of the inclined side wall of the trapezoidal hole portion is the same as the inclination angle of the inclined side wall of the inverted trapezoidal cavity body.

8. The upper vehicle deck of a lightweight ro-ro ship according to claim 7, characterized in that: An aluminum alloy structure with the same contour as the inner contour of the binding hole is provided inside the binding hole, the lower end of the aluminum alloy structure is located between the lower port and the lower port of the trapezoidal hole portion, the upper end of the aluminum alloy structure is located between the upper port and the lower port of the circular hole portion, and the outer peripheral side wall of the aluminum alloy structure of the binding hole is glued to the inner side wall of the binding hole; a bottom sealing plate is provided in the lower port of the aluminum alloy structure.

9. The upper vehicle deck of a lightweight ro-ro ship according to claim 4, characterized in that: 4 to 5 emergency protection structures are installed at intervals below the special-shaped plate structural unit. The 4 to 5 emergency protection structures are arranged at intervals along the ship width direction. The two ends of the emergency protection structure along the ship width direction are glued to the lower end surface of the upper transverse plate of the second I-beam; the emergency protection structure is a grooved folded flat steel and is the same as the lower contour line of the longitudinal section of the special-shaped plate structural unit.

10. The upper vehicle deck of a lightweight ro-ro ship according to any one of claims 4 to 9, characterized in that: The filler is made of PVC material, and the special-shaped plate structural unit is made of glass fiber reinforced plastic.

Images