Cabin hatch negative corner structure

Abstract

The utility model discloses a cabin hatch negative corner structure which comprises a concave crescent-shaped negative corner plate, an opening of the negative corner plate faces a hatch, one side of the negative corner plate is fixed to the longitudinal wall of a ship body, and the longitudinal wall of the ship body is perpendicular to a main deck and the front wall of the hatch end. A mounting opening is formed in the front wall of the hatch end, a negative corner supporting structure is integrated on the mounting opening, a cavity used for containing a negative corner plate is formed in the negative corner supporting structure, the front wall of the cavity is open, and the negative corner plate is fixedly connected with the negative corner supporting structure. An independent concave crescent-shaped negative corner plate is adopted as a negative corner structure, and then the strength of the corner structure is guaranteed by adding a negative corner supporting structure. The negative corner structure is easy to machine, low in cost, light in weight, high in strength and capable of meeting the situation that the deck on the non-opening side of the hatch end wall in the head area is discontinuous in the ship width direction and is discontinued from the longitudinal wall.

Description

Technical Field

[0001] This utility model relates to the field of ship structure technology, and more specifically to a negative corner structure for a ship hatch. Background Technology

[0002] On large ships, such as container ships and bulk carriers, the decks typically feature large openings for cargo holds or engine rooms. These large openings severely disrupt the continuity of the hull structure, and the corners of these openings are often stress concentration points. The structure at these corners has a significant impact on the fatigue life of the hull structure. Therefore, corner structures are used to transition the openings. Negative corners, achieved through specific concave or reverse arc designs, reduce stress concentration while allowing for more space in the cargo hold.

[0003] For inland waterway vessels, the structural negative corner form of the "Code for Construction of Steel Inland Waterway Vessels" is usually adopted, and the supporting wall of the negative corner adopts a conical structure. In addition, there is an existing publication number CN113978608A entitled "A Ship Negative Corner Structure and Ship", which discloses that a negative corner structure is provided on the deck and the negative corner structure is reinforced by an upper and lower inclined sealing plate structure. The technical solutions provided in the standard for negative corner structure and negative corner structure with upper and lower sloping endplates can only handle cases where the deck structure on the non-opening side of the hatch endwall is continuous in the width direction. They are not applicable to cases where the deck structure on the non-opening side of the hatch endwall is discontinuous in the width direction. (Generally, a negative corner structure involves creating a concave area on the main deck near the hatch at the hatch endwall height. However, on the hatch endwall of a 120-TEU battery methanol container ship, there is no main deck at the same height, so a negative corner cannot be formed by processing the main deck.) The standard-provided solution requires conical plates, which is difficult to process and has relatively low strength. The negative corner structure with upper and lower sloping endplates is suitable for large ocean-going container ships. Applying this negative corner structure to inland waterway container ships would result in greater weight and higher cost.

[0004] Therefore, how to provide a ship hatch negative corner structure that is simple to process, low in cost, light in weight, high in strength, and can meet the condition that the deck on the non-open side of the bow area hatch end wall is discontinuous in the beam direction and interrupted at the longitudinal wall is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a hatch negative corner structure that is simple to process, low in cost, light in weight, high in strength, and can meet the condition that the deck on the non-open side of the hatch end wall in the bow region is discontinuous in the width direction and interrupted at the longitudinal wall. It can be applied to container ships and cargo ships to transfer stress at the hatch corner, avoid stress concentration, and improve the fatigue life of the hull structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A negative corner structure for a ship hatch includes: a concave, crescent-shaped negative corner plate with its opening facing the hatch; one side of the negative corner plate is fixed to a longitudinal wall of the hull, which is perpendicular to both the main deck and the forward wall of the hatch end; an installation opening is provided on the forward wall of the hatch end, and a negative corner support structure is integrated into the installation opening; the negative corner support structure has a cavity inside for accommodating the negative corner plate, and the front wall of the cavity is open; the negative corner plate is fixedly connected to the negative corner support structure.

[0008] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a negative corner structure for a ship hatch. It uses a single concave, crescent-shaped negative corner plate as the negative corner structure, and then adds a negative corner support structure to ensure the strength of the corner structure. This negative corner structure is simple to process, low in cost, lightweight, and high in strength, and can meet the condition that the deck on the non-opening side of the hatch end wall in the bow region is discontinuous in the beam direction and interrupted at the longitudinal wall.

[0009] Furthermore, the end of the negative angle corner plate away from its opening is welded to the longitudinal wall of the hull with a longitudinal wall stiffener to eliminate the stress between them.

[0010] The beneficial effects of adopting the above technical solution are: the installation of longitudinal wall stiffeners, which serve as a transition between the negative corner plate and the longitudinal wall of the hull, can avoid stress concentration problems.

[0011] Furthermore, a notch is provided on the mounting port, and a stress transfer plate extends from the side of the negative corner plate near the longitudinal wall of the hull through the notch. One side of the stress transfer plate is welded and fixed to the longitudinal wall of the hull.

[0012] The beneficial effect of adopting the above technical solution is that the stress transfer plate is used to transfer the stress at the corner of the hatch to the negative corner plate first, so as to avoid the stress acting on the end wall of the hatch.

[0013] Furthermore, the negative corner support structure includes:

[0014] An upper inclined sealing plate is provided, with one side of the upper inclined sealing plate welded and fixed to the longitudinal wall of the hull, the upper end of the upper inclined sealing plate welded and fixed to the upper edge of the mounting opening, and the lower end of the upper inclined sealing plate welded and fixed to the end of the negative corner plate away from its opening.

[0015] The lower inclined sealing plate is welded and fixed to the longitudinal wall of the hull on one side, the lower end of the lower inclined sealing plate is welded and fixed to the lower edge of the mounting opening, and the upper end of the lower inclined sealing plate is welded and fixed to the end of the negative corner plate away from its opening.

[0016] The side sealing plate is welded to the other side of the upper inclined sealing plate and the lower inclined sealing plate. The rear end of the side sealing plate is welded and fixed to the other side of the negative corner plate, and the front end of the side sealing plate is welded and fixed to the front wall of the hatch end.

[0017] The beneficial effects of adopting the above technical solution are: the upper inclined sealing plate, the lower inclined sealing plate, and the side sealing plate can effectively support and fix the negative corner plate, ensuring the strength of the corner structure.

[0018] Furthermore, the upper inclined sealing plate, the lower inclined sealing plate, and the side sealing plate are welded with reinforcing materials and elbow plates.

[0019] The beneficial effects of adopting the above technical solution are: the reinforcement of the corresponding structure by the skeleton and the elbow plate, thereby improving the structural strength. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 A schematic diagram of the front structure of a ship hatch negative corner structure provided by this utility model.

[0022] Figure 2 A schematic diagram of the rear structure of a ship hatch negative corner structure provided by this utility model.

[0023] Figure 3 for Figure 1 A schematic diagram of the main structure.

[0024] Figure 4 for Figure 3 A schematic diagram of the mid-section A1-A1.

[0025] Figure 5 for Figure 3 A schematic diagram of the mid-section A2-A2.

[0026] Figure 6 for Figure 3 A schematic diagram of the mid-section A3-A3.

[0027] Figure 7 for Figure 3 A schematic diagram of the mid-section A4-A4. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Current design schemes often use negative corners on continuous deck structures or as an extension behind raised decks. This invention mainly addresses the structural characteristics of decks on the non-opening side of hatch end walls that are discontinuous in the beam direction and have raised decks within the longitudinal walls, such as a 120-TEU battery methanol container ship. It designs a negative corner structure that meets the specifications and provides a sufficiently strong support structure for the negative corner structure.

[0030] In a specific embodiment, this utility model discloses a negative corner structure for a ship hatch, comprising: a concave, crescent-shaped negative corner plate 5, the opening of which faces the hatch; one side of the negative corner plate 5 is fixed to the longitudinal wall 2 of the hull, the longitudinal wall 2 being perpendicular to both the main deck 9 and the hatch end forward wall 1; an installation opening 11 is provided on the hatch end forward wall 1, and a negative corner support structure is integrated on the installation opening 11; the negative corner support structure has a cavity inside for accommodating the negative corner plate 5, and the front wall of the cavity is open. (See also...) Figure 1 The opening is an elliptical hole, which is used to prevent stress concentration on the front wall 1 of the hatch end. The negative corner plate 5 is fixedly connected to the negative corner support structure.

[0031] Among them, the end of the negative corner plate 5 away from its opening is welded to the longitudinal wall 2 of the hull with a longitudinal wall stiffener 10 to eliminate the stress between the two.

[0032] A notch 12 is provided on the mounting port 11. A stress transfer plate 13 extends from the side of the negative corner plate 5 near the longitudinal wall 2 of the hull through the notch 12. One side of the stress transfer plate 13 is welded and fixed to the longitudinal wall 2 of the hull.

[0033] In some embodiments, the negative corner support structure includes:

[0034] The upper inclined sealing plate 3 is welded and fixed to the longitudinal wall 2 of the hull on one side. The upper high end of the upper inclined sealing plate 3 is welded and fixed to the upper edge of the mounting port 11. The lower end of the upper inclined sealing plate 3 is welded and fixed to the end of the negative corner plate 5 away from its opening.

[0035] The lower inclined sealing plate 4 is welded and fixed to the longitudinal wall 2 of the hull on one side. The lower end of the lower inclined sealing plate 4 is welded and fixed to the lower edge of the mounting port 11. The upper end of the lower inclined sealing plate 4 is welded and fixed to the end of the negative corner plate 5 away from its opening.

[0036] Side sealing plate 6 is welded to the other side of the upper inclined sealing plate 3 and the lower inclined sealing plate 4. The rear end of side sealing plate 6 is welded and fixed to the other side of the negative corner plate 5, and the front end of side sealing plate 6 is welded and fixed to the hatch end front wall 1. The size of side sealing plate 6 is the triangular area formed by upper inclined sealing plate 3, lower inclined sealing plate 4, and hatch end front wall 1 plus a 50mm allowance. The right angle is rounded with R50 as a transition.

[0037] The upper inclined sealing plate 3, the lower inclined sealing plate 4, and the side sealing plate 6 are welded with reinforcing materials 8 and elbow plates 7.

[0038] The purpose of this utility model is:

[0039] 1. When designing the structure of a 120-TEU battery methanol container ship, due to limited hatch space, conventional hatch corner structures could not be arranged, necessitating the use of a negative corner structure. The main deck structure on the non-opening side of the bow area hatch endwall is discontinuous outside the longitudinal bulkhead, while the deck inside the longitudinal bulkhead is raised into a platform deck. The deck is discontinuous in the beam direction, making it impossible to use a conventional negative corner structure. Therefore, a separate negative corner structure and corresponding support structure need to be designed to meet the corner requirements in the specifications.

[0040] 2. Design the supporting structure of the negative corner and the connection between the supporting structure and the main hull structure. Adopt the structure of upper and lower inclined sealing plates to ensure that the entire structure is connected in a reasonable and firm manner.

[0041] The advantages of this utility model:

[0042] 1. A solution is provided for designing a negative corner structure for a deck that is discontinuous in the beam direction and interrupted at the longitudinal wall on the non-open side of the hatch end wall facing the bow area.

[0043] 2. Compared with traditional solutions, the plate processing is more convenient, eliminating the need to process conical plates (in existing technical solutions, the concave structure formed by the negative corner and the hatch end wall need to be connected by conical plates, which are difficult and inconvenient to process).

[0044] 3. Compared with traditional solutions, the structure of this utility model has higher strength.

[0045] 4. Compared with the difficulty of welding conical plates to decks and hatch end walls in traditional solutions, this utility model is easier to weld to other structures of the hull.

[0046] 5. The material cost of this utility model is relatively low, and the weight is relatively light.

[0047] 6. The negative corner structure is fabricated using the plate and profile specifications of this ship and other ship hull structures, so there is no need to purchase materials separately.

[0048] 7. The overall structure occupies a small space and does not affect the cabin layout.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A negative corner structure for a ship hatchway, characterized in that The utility model relates to a ship cabin structure, which comprises: a concave and crescent-shaped negative corner board (5) with an opening facing a hatch, one side of the negative corner board (5) being fixed on a hull longitudinal wall (2) which is vertically arranged with a main deck (9) and a hatch end front wall (1); the hatch end front wall (1) is provided with a mounting opening (11) which is integrated with a negative corner support structure, the negative corner support structure has a cavity inside for accommodating the negative corner board (5), and the front wall of the cavity is arranged in an open manner; and the negative corner board (5) is fixedly connected with the negative corner support structure.

2. A negative corner structure for a ship hatchway according to claim 1, characterized in that A longitudinal wall reinforcing rib (10) for eliminating stress between the end of the negative corner board (5) away from the opening and the hull longitudinal wall (2) is welded therebetween.

3. A negative corner structure for a ship hatchway according to claim 1, characterized in that An opening (12) is formed in the mounting opening (11), and a stress transmission plate (13) extends out of the opening (12) from the side of the negative corner board (5) close to the hull longitudinal wall (2), and one side of the stress transmission plate (13) is fixedly welded with the hull longitudinal wall (2).

4. A negative corner structure for a hatchway of a ship according to any one of claims 1-3, characterized in that The negative corner support structure comprises: an upper inclined sealing plate (3) which is fixedly welded with the hull longitudinal wall (2) on one side, the high end of the upper inclined sealing plate (3) being fixedly welded with the upper edge of the mounting opening (11), and the low end of the upper inclined sealing plate (3) being fixedly welded with the end of the negative corner board (5) away from the opening; a lower inclined sealing plate (4) which is fixedly welded with the hull longitudinal wall (2) on one side, the low end of the lower inclined sealing plate (4) being fixedly welded with the lower edge of the mounting opening (11), and the high end of the lower inclined sealing plate (4) being fixedly welded with the end of the negative corner board (5) away from the opening; and a side sealing plate (6) which is welded on the other side of the upper inclined sealing plate (3) and the lower inclined sealing plate (4), the rear end of the side sealing plate (6) being fixedly welded with the other side of the negative corner board (5), and the front end of the side sealing plate (6) being fixedly welded with the hatch end front wall (1).

5. A negative corner structure for a ship hatchway according to claim 4, characterized in that The upper inclined sealing plate (3), the lower inclined sealing plate (4) and the side sealing plate (6) are welded with reinforcing materials (8) and knee plates (7) for reinforcement.

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