A large container ship tie-down bridge in the form of a V

Abstract

This invention discloses a V-frame type lashing bridge for large container ships, comprising a front panel and a rear panel connected by multiple horizontal platforms. Both the front and rear panels are composed of interconnected reinforcing panels. Each reinforcing panel or adjacent reinforcing panels has a column. The reinforcing panels connect to a portion of the upper horizontal platform, and some columns extend downwards to connect to a portion of the lower horizontal platform. Below the reinforcing panels of the rear panel, on both sides of the downwardly extending columns, are two oblique square tubes forming a V-shape. This invention increases the lashing operation space, reduces the overall structural weight, reduces stress concentration, and significantly improves the stiffness of the lashing bridge. It also standardizes the panel structure, reduces the number of loose parts, and lowers manufacturing difficulty, thereby improving ease of use, enhancing lashing effectiveness, saving construction costs, and simplifying the manufacturing process.

Description

Technical Field

[0001] This invention relates to a V-frame type lashing bridge for large container ships, belonging to the field of marine equipment design technology. Background Technology

[0002] With the increasing size of container ships, the deck load is becoming larger and larger, which places higher demands on the design of lashing bridges.

[0003] To meet the maximum stacking weight requirements of deck containers, lashing cranes have gradually evolved to four-layer container heights to accommodate 13-layer deck stacking. This has led to an increasing weight of the lashing cranes, which increases the empty ship's weight, reduces loading capacity, increases fuel consumption, and decreases economic efficiency. Furthermore, classification societies, for the safety of cargo and personnel, have imposed higher requirements on the rigidity of lashing cranes. Therefore, designing lightweight, highly rigid, and easily manufactured lashing cranes while ensuring safety and compliance with classification society regulations is a pressing issue that needs to be addressed.

[0004] Currently, large container ships commonly use shear wall or A-frame lashing bridges. Shear wall lashing bridges have two main drawbacks: firstly, the large amount of sheet metal on both sides of the bridge hull affects lashing operations, increases the workload for crew, and also impacts the placement of refrigerant container sockets and vent caps; secondly, they are relatively weak, exhibiting significant deformation at the bottom non-lashing platform under double-sided lashing conditions, and the stiffness of the upper eyeplate area is insufficient to meet classification society requirements. Traditional A-frame lashing bridges are relatively simple and lightweight, but suffer from large lateral deformation fluctuations at the lashing platform and weak structural stiffness at the top of the guide columns and the outermost row of structures along the hull. With the increasing size of lashing bridges, their structural designs are becoming more complex. For example, a three-deck bridge can have 50 to 70 different structural component specifications, significantly increasing the manufacturing difficulty for shipyards. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to increase the lashing operation space of the lashing bridge of large container ships, reduce the weight of the overall structure, reduce stress concentration, and improve the stiffness of the lashing bridge.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0007] A V-frame type lashing bridge for large container ships includes a front panel and a rear panel connected by multiple horizontal platforms. The front and rear panels are connected by side panels on both sides. Both the front and rear panels are composed of multiple reinforcing panels connected to each other. Each reinforcing panel or adjacent reinforcing panels are provided with a column. The reinforcing panels are connected to a portion of the upper horizontal platform, and some columns extend downward to connect to a portion of the lower horizontal platform. Below the reinforcing panels of the rear panel, i.e., on both sides of the downwardly extending columns, there is a rhomboid tube, and the two rhomboid tubes form a V-shaped structure.

[0008] Preferably, the two ends of the front panel and rear panel of the tying bridge are upwardly protruding reinforcing panels. The upper, middle and lower parts of the reinforcing panels are connected to the uppermost three-layer horizontal platforms, respectively. The upper and lower parts of the other reinforcing panels between the two reinforcing panels are connected to the lower two-layer horizontal platforms of the uppermost three-layer horizontal platforms, respectively. The rhomboid tube is connected to the horizontal platform in its middle part through a trapezoidal elbow plate.

[0009] More preferably, the first reinforcing panel is figure-eight shaped, with panel reinforcing ribs provided at the upper and lower hollowed-out edges.

[0010] More preferably, a column is provided on each side of the reinforcing panel, and the column extends downward to connect with the horizontal platform below it.

[0011] More preferably, the horizontal platform, which is not connected to the reinforcing panel, has a kick plate on its outer side.

[0012] More preferably, in the rear panel of the tying bridge, two ends of the outer side of the horizontal platform below the reinforcing panel are provided with reinforcing panels six, and the outer ends of reinforcing panels six are connected to the inner side of the bottom of reinforcing panel one through stiffness reinforcing tubes.

[0013] Furthermore, both ends of the rhomboid tube and the stiffening tube are respectively provided with closed semi-rotary-shaped ends.

[0014] More preferably, in the front panel of the tying bridge, the inner sides of the two reinforcing panels 1 are respectively provided with reinforcing panels 5, and multiple reinforcing panels 3 are provided between the two reinforcing panels 5. A pair of horizontally parallel kickboards 3 are provided between adjacent reinforcing panels 3. Columns 2 are provided between reinforcing panels 5 and 3, between kickboards 3 and 3, and on the centerline of kickboards 3. In the rear panel of the tying bridge, the inner sides of the two reinforcing panels 1 are respectively provided with reinforcing panels 2, and multiple reinforcing panels 3 are provided between the two reinforcing panels 2. Reinforcing panels 4 are provided between adjacent reinforcing panels 3. Columns 2 are provided between reinforcing panels 2 and 3, between reinforcing panels 4 and 3, and on the centerline of reinforcing panels 4.

[0015] Further, the lower part of the second reinforcing panel extends obliquely inward, and this extended part is connected to the upper end of the corresponding diagonal pipe; the third reinforcing panel is in the shape of 'Jia' with the middle part extending downward, and a guiding upright column extending downward and connected to the horizontal platform below is provided in the middle of each third reinforcing panel; the fourth reinforcing panel is in the shape of 'Tian' with the middle part extending obliquely downward to both sides, and the upper ends of the diagonal pipes corresponding to the lower part of the fourth reinforcing panel are arranged along the two extended parts at the lower part of the fourth reinforcing panel, and the lower ends of the diagonal pipes and the lower ends of the guiding upright columns are connected through a boot plate.

[0016] Further, a hollow is provided on the second reinforcing panel, and a second panel reinforcing rib is provided at the hollow; two symmetric hollows are provided on the third reinforcing panel, and first panel reinforcing ribs are respectively provided at the edges of the hollows; two symmetric hollows are provided on the fourth reinforcing panel, and second panel reinforcing ribs are respectively provided at the edges of the hollows.

[0017] The present invention provides a lashing bridge of a large container ship in the form of a V-frame, which optimizes the structural form of the lashing bridge of a container ship with more than ten thousand TEUs. By arranging four groups of V-frame structures and several integral panels, and adopting the end part of a semi-spindle-shaped diagonal pipe, the structural distribution of the lashing bridge is optimized. The lashing bridge of the large container ship in the form of a V-frame increases the lashing operation space, reduces the weight of the overall structure; reduces the stress concentration, and the stiffness of the lashing bridge is improved to a great extent; unifies the panel structural form, reduces the number of loose parts, and reduces the manufacturing difficulty. Thus, the purposes of improving the use convenience, enhancing the lashing effect, saving the construction cost and simplifying the manufacturing process are achieved.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. Through the design of the V-frame structure form, four groups of V-frame structures are evenly arranged along the ship width direction, and the diagonal pipes are arranged according to the main stress direction of the lashing bridge, making the structural design more reasonable than that of the conventional lashing bridge. Under the same mechanical properties, the V-frame type lashing bridge reduces the weight by 10 - 15% compared with the conventional shear wall form lashing bridge, and reduces the weight by 4 - 10% compared with the conventional A-frame form lashing bridge.

[0020] 2. Through the design of the V-frame structure form, the structure connected to the hatch coaming is reduced, which not only facilitates the arrangement of ventilation caps and small hatch covers on the hatch coaming, but also reduces the workload of on-site leveling and welding, thereby reducing the construction cost of the shipyard.

[0021] 3. Through the design of the V-frame structure form, the tops of the four groups of large V-frame structures are arranged at the intersection of the ordinary upright columns and the first lashing platform, reducing the deformation fluctuation of the lashing platform along the ship width direction. The side edge adopts a stiffness strengthening pipe, which saves the structural weight while enhancing the stiffness of the raised platform, and has a better lashing effect than the conventional lashing bridge.

[0022] 4. Through the design of the V-frame structure form, several integrated panels in the shape of "Tian" character, "Jia" character, and "8" character are arranged in the lashing platform, which not only reduces the overall stress level of the lashing platform, improves the stiffness of the lashing platform and the side structure, but also reduces the specifications and quantities of the lashing bridge structural components and the difficulty of shipyard manufacturing and splicing.

[0023] 5. Through the design of the V-frame structure form, the end of the rhombic pipe adopts a semi-prismatic form, which improves the welding quality here, improves the stress distribution of the panel at the end of the rhombic pipe, and is not easy to crack. A boot plate is arranged between the bottom end of the rhombic pipe and the guiding column, and wide toe ends are set at key positions to effectively relieve the stress concentration problem at the bottom of the rhombic pipe.

[0024] 6. Through the design of the V-frame structure form, an insertion connection design is adopted between the rhombic pipe and the panel, which can effectively transfer the stress of the lashing platform panel to the front and back sides of the rhombic pipe, making the rhombic pipe受力 more evenly and the stress level lower. Therefore, on the premise of ensuring strength, the thickness of the rhombic pipe can be further reduced to reduce the structural weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 An axonometric view of the large container ship lashing bridge in the form of a V-frame provided for the embodiment;

[0026] Figure 2 A front view of the large container ship lashing bridge in the form of a V-frame provided for the embodiment;

[0027] Figure 3 For Figure 2 The rear view of;

[0028] Figure 4 A schematic diagram of the strengthening panel one;

[0029] Figure 5 A schematic diagram of the strengthening panel two;

[0030] Figure 6 A schematic diagram of the strengthening panel three;

[0031] Figure 7 A schematic diagram of the strengthening panel four;

[0032] Figure 8 A schematic diagram of the strengthening panel five;

[0033] Figure 9 A schematic diagram of the strengthening panel six;

[0034] Figure 10 A schematic diagram of the boot plate;

[0035] Figure 11 A connection schematic diagram of the upper end of the rhombic pipe one;

[0036] Figure 12 for Figure 11 Side view;

[0037] Figure 13 This is a schematic diagram of the connection at the lower end of the rhomboid tube;

[0038] Figure 14 for Figure 13 Side view;

[0039] Figure 15 This is a schematic diagram of the connection of the trapezoidal elbow plate;

[0040] Figure 16 This is an axial view of the end of the semi-fusiform shape;

[0041] Figure 17 This is the front view of the end of the semi-fusiform shape;

[0042] Figure 18 for Figure 17 Side view. Detailed Implementation

[0043] To make the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0044] Example

[0045] like Figure 1-18 As shown, this embodiment provides a V-frame type large container ship lashing bridge, which includes a front panel and a rear panel of the lashing bridge connected by five horizontal platforms (from bottom to top: horizontal platform one 11, horizontal platform two 12, horizontal platform three 13, horizontal platform four 14, and horizontal platform five 15) and side panels on both sides.

[0046] The front panel of the lashed bridge is as follows Figure 2As shown, the front panel of the tying bridge has two upward-protruding reinforcing panels 41 at both ends. The upper, middle, and lower parts of the reinforcing panels 41 are connected to horizontal platforms 15, 14, and 13, respectively. Reinforcing panels 45 are provided on the inner sides of the two reinforcing panels 41. Four reinforcing panels 43 are provided between the two reinforcing panels 45. A pair of horizontally parallel kick plates 63 are provided between adjacent reinforcing panels 43. A column 22 is provided on each side of the reinforcing panels 41. The column 22 extends downward and connects to horizontal platforms 12 and 11. Columns 23 are provided between reinforcing panels 45 and 43, between kick plates 63 and 43, and on the centerline of kick plates 63. A guide column 21 extends downward and connects to horizontal platforms 11 and 12 in the middle of the reinforcing panels 43. The upper and lower parts of reinforced panel 3 43 are connected to horizontal platform 4 14 and horizontal platform 3 13, respectively. The upper part of a pair of kickboards 3 63 is connected to horizontal platform 4 14, and the lower part is connected to horizontal platform 3 13. Kickboards 1 61 and 2 62 are respectively provided on the outer sides of horizontal platform 1 11 and horizontal platform 2 12. Kickboards 1 61 and 2 62 are located between two uprights 1 22 on both sides, that is, below reinforced panel 1 41. The lower end of upright 2 23 terminates at the third horizontal platform to reduce weight while ensuring the strength and rigidity of the binding operation platform. The upper ends of all uprights are located above the highest horizontal platform in their respective positions. Multiple channel steel uprights 1 81 are set on horizontal platform 11- below upright 2 23, which can support the handrail and also provide support for horizontal platform 11-. Multiple channel steel uprights 82 are set on horizontal platform 2 12 below upright 2 23, which are only used to support the handrail.

[0047] The rear panel of the lash bridge is as follows Figure 3As shown, the rear panel of the tying bridge has two upward-protruding reinforcing panels 41 at both ends. The upper, middle, and lower parts of the reinforcing panels 41 are connected to horizontal platforms 15, 14, and 13, respectively. Reinforcing panels 42 are provided on the inner sides of the two reinforcing panels 41. Four reinforcing panels 43 are provided between the two reinforcing panels 42, and reinforcing panels 44 are provided between adjacent reinforcing panels 43. A column 22 is provided on each side of the reinforcing panels 41, extending downwards to connect with horizontal platforms 12 and 11. A column 23 is provided between reinforcing panels 42 and 43, between reinforcing panels 44 and 43, and along the centerline of reinforcing panel 44. A guide column 21 extending downwards and connecting with horizontal platforms 11 and 12 is provided in the middle of each reinforcing panel 43. The outer ends of the horizontal platform 212 are respectively provided with reinforcing panels 646. The outer ends of the reinforcing panels 646 are connected to the inner side of the bottom of the reinforcing panel 11 through stiffness reinforcing tubes 33. The two ends of the stiffness reinforcing tubes 33 are respectively provided with closed semi-rotary end 9 (e.g. Figure 16-18 (As shown). Below the rear panel of the tying bridge, there is a V-shaped structure composed of multiple rhomboid tubes, symmetrical to the centerline of the reinforcing panel 3 43. The two outermost tubes are rhomboid tubes 2 32, and the six in the middle are rhomboid tubes 1 31. The upper end of each rhomboid tube connects to the bottom of the corresponding reinforcing panel (at horizontal platform 3 13), and the lower end connects to the lower end of the guide column 21 (at horizontal platform 1 11) via a boot plate 5 (as shown). Figure 10 , 13 (As shown in Figure 14). The rhomboid tube 1 31, rhomboid tube 2 32 and horizontal platform 2 12 are connected by trapezoidal elbow plate 10 (as shown in Figure 14). Figure 15 As shown). The two ends of the rhomboid tube 1 31 and rhomboid tube 2 32 are respectively welded with closed semi-fusiform ends 9 (as shown). Figure 16-18 As shown), this is used to improve the stress distribution within the corresponding reinforced panel of the connection.

[0048] like Figure 4 As shown, the reinforcing panel 41 is figure-eight shaped, and the upper and lower hollowed-out edges are respectively provided with panel reinforcing ribs 71.

[0049] like Figure 5 As shown, the outer side of the reinforcing panel 42 extends obliquely inward, and this extended portion connects to the upper end of the rhomboid tube 32. The reinforcing panel 42 has a perforation, and a panel reinforcing rib 72 is provided at the edge of the perforation.

[0050] like Figure 6As shown, the reinforcing panel 3 43 is a U-shaped structure extending downwards from the center. Each reinforcing panel 3 43 has a guide column 21 extending downwards and connecting to the horizontal platform below it in the center. The reinforcing panel 3 43 has two symmetrical cutouts on the left and right sides, and panel reinforcing ribs 71 are respectively provided at the edges of the cutouts.

[0051] like Figure 7 As shown, the reinforcing panel 44 is a U-shaped structure extending diagonally downwards from the center to both sides. The upper ends of the rhomboid tube 31 are positioned along the two extended portions of the lower part of the reinforcing panel 44 (e.g., ...). Figure 11 , 12 (As shown). The reinforcing panel 44 has two symmetrical cutouts on the left and right sides, and the edges of the cutouts are respectively provided with panel reinforcing ribs 72.

[0052] Enhanced panel 5.45 (e.g.) Figure 8 As shown), reinforced panel six 46 (as shown) Figure 9 All of them (shown) are kickboard type structures.

[0053] In the above structure, since there are no corresponding reinforcing panels at kick plate 1 (61) and kick plate 2 (62), the kick plates are used together to transfer the shear force of the bridge structure. Reinforcing panel 1 (41) is a one-piece panel, which can be regarded as a combination of various panels and elbow plates of conventional lashed bridges, effectively reducing the number of loose parts. Each reinforcing panel and kick plate is a one-piece high-strength steel plate, welded to the corresponding column / guide column. Reinforcing panels 1 (41), 2 (42), 3 (43), and 44 (44) have large square openings to facilitate the crew to complete the lashing work. Reinforcing panels 2 (42) and 44 (44) at the top of the rhomboid tubes are subjected to greater shear force, so a thicker panel reinforcing rib 2 (72) is used; reinforcing panels 1 (41) and 3 (43) use a thinner panel reinforcing rib 1 (71).

[0054] The rhomboid tube, the semi-rotary end 9, and the reinforcing panel and boot plate 5 are connected by an insertion method: first, a weld joint is cut in the middle of the short side of the rhomboid tube and the semi-rotary end 9; then, the reinforcing panel and boot plate 5 are inserted; finally, the structural contact parts are welded on one side (e.g., ...). Figure 11-14 (As shown).

Claims

1. A V-frame type lashing bridge for large container ships, comprising a front lashing bridge panel and a rear lashing bridge panel connected by multiple horizontal platforms, wherein the front lashing bridge panel and the rear lashing bridge panel are connected by side panels on both sides, characterized in that, The front and rear panels of the tying bridge are both composed of multiple reinforcing panels connected to each other. Each reinforcing panel or between adjacent reinforcing panels is provided with a column. The reinforcing panels are connected to the upper part of the horizontal platform, and some columns extend downward to connect with the lower part of the horizontal platform. Below the reinforcing panel of the rear panel of the tying bridge, on both sides of the downward-extending column, there is a rhomboid tube, and the two rhomboid tubes form a V-shaped structure. The two ends of the front and rear panels of the tying bridge are upward-protruding reinforcing panels (41). The upper, middle and lower parts of the reinforcing panels (41) are connected to the uppermost three-layer horizontal platforms, respectively. The upper and lower parts of the other reinforcing panels between the two reinforcing panels (41) are respectively connected to the lower two horizontal platforms of the uppermost three horizontal platforms; the rhomboid tube is connected to the horizontal platform in the middle through a trapezoidal elbow plate (10); in the front panel of the tying bridge, the inner sides of the two reinforcing panels (41) are respectively provided with reinforcing panels (45), and multiple reinforcing panels (43) are provided between the two reinforcing panels (45), and a pair of horizontally parallel kickboards (63) are provided between adjacent reinforcing panels (43); between the reinforcing panels (45) and the reinforcing panels (43), and between the kickboards (63) (63) Column 2 (23) is provided between the reinforcing panel 3 (43) and the centerline of the kick plate 3 (63); in the rear panel of the binding bridge, reinforcing panel 2 (42) is provided on the inner side of the two reinforcing panels 1 (41), multiple reinforcing panels 3 (43) are provided between the two reinforcing panels 2 (42), and reinforcing panels 4 (44) are provided between adjacent reinforcing panels 3 (43); Column 2 (23) is provided between reinforcing panels 2 (42) and reinforcing panels 3 (43), between reinforcing panels 4 (44) and reinforcing panels 3 (43), and on the centerline of reinforcing panels 4 (44). The lower part of the second reinforcing panel (42) extends diagonally inward, and the extended part is connected to the upper end of the corresponding rhomboid tube; the third reinforcing panel (43) is a shaped A extending downward in the middle, and each third reinforcing panel (43) has a guide column (21) extending downward and connected to the horizontal platform below it in the middle; the fourth reinforcing panel (44) is a shaped T extending diagonally downward in the middle to both sides, and the upper end of the rhomboid tube corresponding to the lower part of the fourth reinforcing panel (44) is set along the two extended parts of the lower part of the fourth reinforcing panel (44), and the lower end of the rhomboid tube is connected to the lower end of the guide column (21) through the boot plate (5).

2. The V-frame type large container ship lashing bridge as described in claim 1, characterized in that, The reinforcing panel (41) is shaped like an 8, and the upper and lower hollowed-out edges are respectively provided with panel reinforcing ribs (71).

3. The V-frame type large container ship lashing bridge as described in claim 1, characterized in that, A column (22) is provided on each side of the reinforced panel (41), and the column (22) extends downward to connect with the horizontal platform below it.

4. The V-frame type large container ship lashing bridge as described in claim 1, characterized in that, The horizontal platform, which is not connected to the reinforcing panel, is provided with a kick plate on its outer side.

5. The V-frame type large container ship lashing bridge as described in claim 1, characterized in that, In the rear panel of the tying bridge, there are two ends of the outer side of the horizontal platform below the reinforcing panel, and the outer ends of the reinforcing panels are connected to the inner side of the bottom of the reinforcing panel (41) through stiffness reinforcing tubes (33).

6. The V-frame type large container ship lashing bridge as described in claim 5, characterized in that, The rhomboid tube and the stiffening tube (33) are respectively provided with closed semi-rotary end (9) at both ends.

7. The V-frame type large container ship lashing bridge as described in claim 1, characterized in that, The second reinforcing panel (42) has a cutout, and a panel reinforcing rib (72) is provided in the cutout; the third reinforcing panel (43) has two symmetrical cutouts on the left and right, and a panel reinforcing rib (71) is provided at the edge of the cutout; the fourth reinforcing panel (44) has two symmetrical cutouts on the left and right, and a panel reinforcing rib (72) is provided at the edge of the cutout.

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