Hatch corner structure of open container ship

Abstract

The present invention discloses a corner structure for the hatch enclosure of an open container ship, comprising a corner plate disposed between a longitudinal hatch enclosure top plate and a transverse bulkhead top plate; a corner support component fixedly mounted on the longitudinal hatch enclosure side plates; the corner plate and the longitudinal hatch enclosure top plate are integrally formed; a continuously extending plate-like component formed by the corner plate and the longitudinal hatch enclosure top plate is disposed above the longitudinal hatch enclosure side plates; the top of the corner support component is fixedly mounted on the lower surface of the corner plate; the corner plate is fixedly mounted on the transverse bulkhead side plates; and the contour of the corner plate comprises a long arc segment, a transition segment, an inwardly concave arc segment, and a short straight segment connected in sequence. The present invention can simultaneously strengthen the hatch enclosure corner of an open container ship, meeting both functional requirements and fatigue strength requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a hatch corner structure for an open container ship. Background Art

[0002] Conventional container ships typically feature hatch covers on their hatch coamings, protecting containers in the cargo hold from the elements and providing a support platform for containers stacked on the deck. However, loading and unloading at the dock requires adjusting or raising the hatch covers, a complex operation that impacts loading and unloading efficiency. This is particularly true for feeder vessels and smaller container ships sailing along rivers and coasts, significantly hindering loading and unloading efficiency and the economics of vessel operations. This led to the development of open-bottom container ships, which significantly improve dock loading and unloading efficiency. Conventional open-bottom container ships stack containers directly on the double bottom. However, due to stacking weight restrictions, they can only stack seven to eight layers of containers, limiting their loading capacity. Layer delimiters effectively solve this problem. When the cargo hold is normally loaded, the top of the layer delimiter is flush with the top of the hatch coaming, allowing containers on the deck to rest on the layer delimiter, increasing the number of layers that can be stacked.

[0003] The hatch coamings of conventional container ships only need to support the hatch covers, and containers are not directly stacked on the hatch coamings. Therefore, the corners of the hatch coamings are generally made into a type with the transverse bulkhead top plate and the hatch coaming longitudinal top plate extending out and then rounded. This structural type is simple and easy to meet strength requirements.

[0004] Due to the need to install delamina- tors on open-top container ships, the hatch coaming top plate cannot be made into a protruding form. At the same time, the corner reinforcement of the row of boxes closest to the side needs to sit on the longitudinal side plate of the hatch coaming. Therefore, the hatch coaming corner can only be made into a bracket with an arc. The fatigue strength at the toe end is difficult to meet, and it is impossible to meet both functional and strength requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a corner structure for the hatch of an open container ship.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A corner structure for the hatch enclosure of an open container ship comprises a corner plate arranged between a longitudinal top plate of the hatch enclosure and a transverse bulkhead top plate; a box corner support component is fixedly provided on the longitudinal side plate of the hatch enclosure; the corner plate and the longitudinal top plate of the hatch enclosure are integrally formed; a continuously extending plate-like component formed by the corner plate and the longitudinal top plate of the hatch enclosure is arranged above the longitudinal side plate of the hatch enclosure; the top of the box corner support component is fixedly provided on the lower surface of the corner plate; the corner plate is fixedly connected to the transverse bulkhead side plate; the contour line of the corner plate comprises a long arc segment, a transition segment, a concave arc segment and a short straight segment connected in sequence; the short straight segment is connected to the transverse bulkhead side plate; the concave arc segment is located between the transverse bulkhead side plate and the box corner support component; the transition segment is located on the outside of the box corner support component; the long arc segment extends from the end of the transition segment in a direction close to the longitudinal side plate of the hatch enclosure.

[0008] Furthermore, the inwardly concave arc section is concave toward the direction approaching the longitudinal side plate of the hatch coaming.

[0009] Furthermore, the short straight section is perpendicular to the transverse bulkhead side plating.

[0010] Furthermore, the transition section includes a long straight line section and a convex arc section connected to each other; the long straight line section is connected to the long arc section, and the convex arc section is connected to the concave arc section.

[0011] Furthermore, the convex arc segment is tangent to the long straight line segment.

[0012] Furthermore, the long straight line segment is parallel to the short straight line segment.

[0013] Furthermore, the length of the long straight line segment is greater than the length of the short straight line segment.

[0014] Furthermore, the arc radius of the long arc segment is greater than the arc radius of the concave arc segment.

[0015] Furthermore, the long arc segment is not connected to the hatch coaming longitudinal side plate.

[0016] Furthermore, the transverse bulkhead top plate does not extend above the transverse bulkhead side plate; the transverse bulkhead top plate and the corner plate are respectively fixed to both sides of the transverse bulkhead side plate.

[0017] The present invention provides the following beneficial effects: The hatch coaming corner structure for an open container ship features a longitudinal top panel extending outward, i.e., a continuously extending plate-like member formed by the longitudinal top panel and the corner panel is positioned above the longitudinal side panels of the hatch coaming. This structure eliminates the longitudinal toe of conventional corners. The corner panel outline features a transition section outside the corner support member, which locally enlarges the hatch coaming end and strengthens the corner closest to the side containers. The corner panel outline features a concave arc section between the transverse bulkhead side panels and the corner support member, i.e., a negative corner is locally formed at the corner panel end. This structure reduces stress at the toe to meet fatigue strength requirements. The transverse bulkhead top panel does not extend outward, i.e., the transverse bulkhead top panel does not extend above the transverse bulkhead side panels, meeting the requirements for delamination reinforcement. The junction between the corner panel and the transverse bulkhead side panels is formed into a toe-shaped structure, and the negative corner (i.e., the concave arc section of the corner panel outline) reduces stress levels to meet strength requirements. The hatch enclosure corner structure of an open container ship of the present invention can strengthen the hatch enclosure corner of the open container ship, meet the functional requirements and meet the fatigue strength requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic top view of a preferred embodiment of the present invention.

[0019] Figure 2 for Figure 1 AA cross-sectional view diagram.

[0020] Figure 3 for Figure 2 Center B view. DETAILED DESCRIPTION

[0021] A preferred embodiment is given below and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0022] like Figure 1 、 Figure 2 and Figure 3 As shown, a corner structure of an open container ship hatch coaming comprises a corner plate 20 arranged between a hatch coaming longitudinal top plate 10 and a transverse bulkhead top plate 13; a box corner support component 12 is fixedly provided on the hatch coaming longitudinal side plate 11.

[0023] The corner plate 20 and the hatch coaming longitudinal top plate 10 are formed in one piece; the continuously extending plate-shaped component formed by the corner plate 20 and the hatch coaming longitudinal top plate 10 is arranged above the hatch coaming longitudinal side plates 11.

[0024] The top of the box corner support member 12 is fixed to the lower surface of the corner plate 20; the corner plate 20 is fixed to the transverse bulkhead side plate 14.

[0025] The outline of the corner plate 20 includes a long arc segment 21 , a transition segment 22 , an inwardly concave arc segment 23 and a short straight segment 24 , which are connected in sequence.

[0026] The short straight section 24 is connected to the transverse bulkhead side plate 14 ; the concave arc section 23 is located between the transverse bulkhead side plate 14 and the box corner support member 12 ; and the transition section 22 is located outside the box corner support member 12 .

[0027] The long arc section 21 extends from the end of the transition section toward the direction close to the hatch coaming longitudinal side plate. The long arc section is concave toward the direction close to the hatch coaming longitudinal side plate.

[0028] The inwardly concave arc section 23 is concave toward the direction close to the longitudinal side plate of the hatch coaming. The short straight section 24 is perpendicular to the transverse bulkhead side plate 14.

[0029] The transition section 22 includes a long straight section 25 and a convex arc section 26 connected to each other; the long straight section 25 is connected to the long arc section 21 , and the convex arc section 26 is connected to the concave arc section 23 .

[0030] The convex arc segment 26 is tangent to the long straight line segment 25 .

[0031] The long straight line segment 25 is parallel to the short straight line segment 24. The length of the long straight line segment 25 is greater than the length of the short straight line segment 24.

[0032] The arc radius of the long arc segment 21 is greater than the arc radius of the concave arc segment 23. The long arc segment 21 is not connected to the hatch coaming longitudinal side plate 11.

[0033] The transverse bulkhead top plate 13 does not extend above the transverse bulkhead side plate 14 ; the transverse bulkhead top plate 13 and the corner plate 20 are fixed to both sides of the transverse bulkhead side plate 14 , respectively.

[0034] The hatch coaming corner structure of the open container ship of the present invention has a hatch coaming longitudinal top plate protruding, that is, a continuously extending plate-like component formed by the hatch coaming longitudinal top plate and the corner plate is arranged above the hatch coaming longitudinal side plate, and this structure eliminates the longitudinal toe end of the conventional corner.

[0035] A transition section is provided on the outer side of the corner support component of the corner plate contour line, so that the end of the hatch coaming is locally enlarged, providing reinforcement for the corner closest to the side container.

[0036] The corner plate contour line is provided with an inwardly concave arc segment between the transverse bulkhead side plate and the box corner support component, that is, a negative corner is locally provided at the end of the corner plate. This structure reduces the stress at the toe end to meet the fatigue strength requirements.

[0037] The top plate of the transverse bulkhead does not extend above the transverse bulkhead side plate, which meets the requirements of the delaminator reinforcement.

[0038] The connection between the corner plate and the transverse bulkhead side plate is made into a toe type, and the negative corner (i.e. the concave arc section of the corner plate outline) is used to reduce the stress level to meet the strength requirements.

[0039] The hatch enclosure corner structure of an open container ship of the present invention can strengthen the hatch enclosure corner of the open container ship, meet the functional requirements and meet the fatigue strength requirements.

[0040] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A hatch coaming corner structure for an open container ship, comprising a corner plate disposed between a longitudinal hatch coaming top plate and a transverse bulkhead top plate; a corner support member is fixedly disposed on the longitudinal side plates of the hatch coaming; and characterized in that: The corner plate and the hatch coaming longitudinal top plate are integrally formed; the continuously extending plate-like component formed by the corner plate and the hatch coaming longitudinal top plate is arranged above the hatch coaming longitudinal side plate; the top of the box corner support component is fixed to the lower surface of the corner plate; the corner plate is fixed to the transverse bulkhead side plate; the outline of the corner plate includes a long arc segment, a transition segment, a concave arc segment and a short straight segment connected in sequence; the short straight segment is connected to the transverse bulkhead side plate; the concave arc segment is located between the transverse bulkhead side plate and the box corner support component; the transition segment Located on the outside of the box corner support component; the long arc segment extends from the end of the transition segment toward the longitudinal side plate of the hatch coaming; the concave arc segment is concave toward the longitudinal side plate of the hatch coaming; the short straight segment is perpendicular to the transverse bulkhead side plate; the transition segment includes a long straight segment and a convex arc segment connected to each other; the long straight segment is connected to the long arc segment, and the convex arc segment is connected to the concave arc segment; the arc radius of the long arc segment is greater than the arc radius of the concave arc segment; the long arc segment is not connected to the longitudinal side plate of the hatch coaming.

2. The open container ship hatch corner structure according to claim 1, characterized in that: The convex arc segment is tangent to the long straight line segment.

3. The open container ship hatch corner structure according to claim 1, characterized in that: The long straight line segment is parallel to the short straight line segment.

4. The open container ship hatch corner structure according to claim 1, characterized in that: The length of the long straight line segment is greater than the length of the short straight line segment.

5. The open container ship hatch corner structure according to claim 1, characterized in that: The top plating of the transverse bulkhead does not extend above the side plating of the transverse bulkhead; the top plating and corner plating of the transverse bulkhead are fixed to both sides of the side plating of the transverse bulkhead respectively.

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