Marine cargo compartment cover structure

Abstract

The utility model relates to a marine cargo hold hatch cover structure applied to the field of hatch cover structures, which comprises a cargo hold hatch, the upper end of the cargo hold hatch is hinged with a locking hatch cover, one end of the locking hatch cover close to the cargo hold hatch is fixedly connected with a falling protector, and one end of the locking hatch cover far away from the cargo hold hatch is fixedly connected with a first bearing bar. The outer side of the first bearing rod is fixedly connected with a connecting vertical rod, a sliding groove is formed in the rear end of the cargo hold hatch, the inner end of the sliding groove is slidably connected with a connecting weighing rod, and the connecting vertical rod penetrates through the upper portion and the lower portion of the connecting weighing rod. A sailor turns over the locking hatch cover clamped with the hatch opening of the cargo hold, then the body bandage connected to the falling protector is tied to the waist, the protection effect is achieved, the locking nut moves towards the outer side of the connecting vertical rod and is tightly attached to the connecting vertical rod, the locking hatch cover is kept in the limiting state, the locking hatch cover is prevented from being turned down accidentally, and the functionality of the whole hatch cover is improved.

Description

Technical Field

[0001] This utility model relates to a hatch cover structure, and more particularly to a marine cargo hold hatch cover structure applied in the field of hatch cover structures. Background Technology

[0002] Cargo hatch covers are an essential component of a ship's cargo holds, covering the hatch openings and playing a crucial role. Functionally, they effectively protect the cargo within the hold, preventing damage from wind, rain, seawater, and foreign objects during navigation, ensuring the cargo's integrity during transport. During loading and unloading, hatch covers must be easy to open and close to meet the demands of efficient cargo handling.

[0003] Chinese patent CN205589418U discloses a hatch opening structure, particularly a manual hatch opening structure. This utility model's manual hatch opening structure includes a hatch and a gas spring damper, with one end of the hatch hinged to the hull. This utility model achieves manual hatch opening via a gas spring damper, featuring a simple structure, reduced costs, and convenient operation and use. It also reduces the empty ship's weight, increases the ship's economic efficiency, and lowers the hatch's manufacturing cost.

[0004] When entering and exiting the cargo hold, the safety measures for crew members are limited. In most cases, crew members rely solely on simple ladders for access, lacking effective fall protection devices. During ship navigation, the ship is frequently rocked by factors such as waves and wind, and the environment inside the cargo hold is complex. Crew members are extremely prone to slipping and falling while climbing the ladders. Therefore, it is necessary to design a more functional marine cargo hold cover structure to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that the safety protection measures for crew members are limited when entering and exiting the cargo hold. In most cases, crew members only rely on simple ladders to go up and down, and there is a lack of effective fall protection devices. When the ship is sailing, the hull is frequently rocked by factors such as waves and wind, and the space environment inside the cargo hold is complex. Crew members are very likely to lose their footing and fall while climbing up and down the ladder.

[0006] To address the aforementioned problems, this utility model provides a marine cargo hold hatch cover structure, including a cargo hold hatch opening. A locking hatch cover is hinged to the upper end of the cargo hold hatch opening. A fall arrestor is fixedly connected to the end of the locking hatch cover near the cargo hold hatch opening. A first load-bearing rod is fixedly connected to the end of the locking hatch cover away from the cargo hold hatch opening. A connecting vertical rod is fixedly connected to the outer side of the first load-bearing rod. A sliding groove is provided at the rear end of the cargo hold hatch opening. A connecting weighing rod is slidably connected to the inner end of the sliding groove. The connecting vertical rod passes through the upper and lower parts of the connecting weighing rod. A connecting plate is fixedly connected to the lower rear end of the cargo hold hatch opening. An anti-detachment protrusion is fixedly connected to the upper end of the connecting plate. An annular connecting disc is rotatably connected between the anti-detachment protrusion and the connecting plate. Multiple elastic connecting parts are fixedly connected to the upper end of the annular connecting disc. A locking nut is fixedly connected to the upper end of each elastic connecting part.

[0007] In the aforementioned marine cargo hold hatch cover structure, in this scheme, when the crew prepares to enter the cargo hold through the locked hatch cover, the crew opens the locked hatch cover that engages with the cargo hold hatch opening, and then fastens the body straps connected to the fall arrestor around their waist for protection. The locking nut moves outward from the connecting vertical rod and fits tightly, keeping the locked hatch cover in a limited position to prevent it from accidentally falling down and improving the overall functionality of the hatch cover.

[0008] As a further improvement to this application, the cargo hatch and the locking hatch cover are interlocked, and a safety rope is provided at the inner end of the fall arrestor.

[0009] As a further improvement to this application, a body strap is fixedly connected to the end of the safety rope away from the fall arrester, and a buckle is provided at the interface of the body strap.

[0010] As a further improvement of this application, the locking nut and the connecting rod are threaded together, and multiple elastic connectors are arranged in a ring around the outside of the anti-loosening protrusion.

[0011] As another improvement of this application, a vertical ladder is fixedly connected to the lower inner end of the cargo hold hatch, and the vertical ladder extends into the cargo hold inside the ship.

[0012] As a further improvement to this application, the rear end of the fall arrestor is fixedly connected to a mesh reinforcing frame, which is fixedly connected to the locking hatch.

[0013] As a further improvement to this application, a sealing inner frame is fixedly connected to one end of the locking hatch near the cargo hold hatch, and the sealing inner frame and the cargo hold hatch are interlocked.

[0014] In summary, in this scheme, when staff prepare to enter the cargo hold through the locking hatch, the crew opens the locking hatch, which engages with the cargo hold hatch opening, to create a passage. They then fasten the body straps connected to the fall arrestor around their waists using the buckles, completing the fall arrestor installation. Finally, they enter the cargo hold using a vertical ladder. During this process, the safety rope of the fall arrestor automatically extends and retracts to provide protection. When the fall arrestor needs to be used, the locking hatch is opened, the connecting weighing bar is lifted from the sliding groove, and the connecting vertical rod is aligned with the hole of the connecting weighing bar and inserted to achieve initial connection. Next, the annular connecting disc, which is rotatably connected to the connecting plate, is manually rotated, causing the locking nut to rotate around the connecting vertical rod. Under the elastic action of the elastic connector, the locking nut moves outwards from the connecting vertical rod and fits tightly, keeping the locking hatch in a limited position to prevent it from accidentally flipping down. Simultaneously, the mesh reinforcing frame between the fall arrestor and the locking hatch disperses the tensile force, enhancing the overall structural strength and rigidity, ensuring the stability of the connection points, and improving the stability of the fall arrestor in use. Attached Figure Description

[0015] Figure 1 This is an isometric view of the cargo hold hatch according to the first embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the vertical ladder below the cargo hold hatch according to the first embodiment of this application;

[0017] Figure 3 This is a diagram showing the locked hatch in the open state according to the first embodiment of this application.

[0018] Figure 4 The first and second embodiments of this application Figure 3 Enlarged view of the cargo hold hatch in the middle section;

[0019] Figure 5 This is an enlarged view of the mesh reinforcing frame according to the second embodiment of this application;

[0020] Figure 6 This is a rear-view axonometric view of the cargo hold hatch according to the first embodiment of this application;

[0021] Figure 7 This is the first embodiment of the present application. Figure 6 Enlarged view of a partial truncated section of the connecting vertical rod.

[0022] Explanation of the labels in the diagram:

[0023] 1. Cargo hatch; 2. Locking hatch cover; 3. Vertical ladder; 4. Fall arrestor; 5. Mesh reinforced frame; 6. Safety rope; 7. Body straps; 8. Buckle; 9. First load-bearing bar; 10. Connecting vertical bar; 11. Sliding groove; 12. Connecting weighing bar; 13. Connecting plate; 14. Annular connecting disc; 15. Anti-detachment protrusion; 16. Elastic connector; 17. Locking nut; 18. Sealing inner frame. Detailed Implementation

[0024] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] First implementation method:

[0026] Figures 1-4 , Figures 6-7 A marine cargo hold hatch cover structure is shown, including a cargo hold hatch 1. A locking hatch cover 2 is hinged to the upper end of the cargo hold hatch 1. A fall arrestor 4 is fixedly connected to the end of the locking hatch cover 2 near the cargo hold hatch 1. A first load-bearing rod 9 is fixedly connected to the end of the locking hatch cover 2 away from the cargo hold hatch 1. A connecting vertical rod 10 is fixedly connected to the outer side of the first load-bearing rod 9. A sliding groove 11 is opened at the rear end of the cargo hold hatch 1. A connecting weighing rod 12 is slidably connected to the inner end of the sliding groove 11. The connecting vertical rod 10 passes through and connects the weighing rod 12 from top to bottom. A connecting plate 13 is fixedly connected to the lower rear end of the cargo hold hatch 1. An anti-detachment protrusion 15 is fixedly connected to the upper end of the connecting plate 13. An annular connecting disc 14 is rotatably connected between the anti-detachment protrusion 15 and the connecting plate 13. A plurality of elastic connecting parts 16 are fixedly connected to the upper end of the annular connecting disc 14. A locking nut 17 is fixedly connected to the upper end of the elastic connecting parts 16.

[0027] Figures 1-4 , Figures 6-7 The cargo hatch 1 and the locking hatch cover 2 are shown to be interlocked. A safety rope 6 is provided at the inner end of the fall arrestor 4. A body strap 7 is fixedly connected to the end of the safety rope 6 away from the fall arrestor 4. A buckle 8 is provided at the interface of the body strap 7. The locking nut 17 and the connecting vertical rod 10 are threadedly connected. Multiple elastic connectors 16 are arranged in a ring around the outside of the anti-detachment protrusion 15. A vertical ladder 3 is fixedly connected to the lower inner end of the cargo hatch 1.

[0028] Figures 1-4 , Figures 6-7The diagram shows the crew first flipping up the locking hatch 2 around its hinge point with the cargo hold hatch 1 to open the cargo hold passage. After opening the locking hatch 2, the crew prepares to use the fall arrestor 4, which is fixed to the end of the locking hatch 2 near the cargo hold hatch 1. The safety rope 6 inside the fall arrestor 4 is connected to a body strap 7. The crew puts on the body strap 7 around their waist and securely fastens it using the buckle 8 at the interface of the body strap 7, ensuring a tight connection between the body and the fall arrestor. This prepares the crew for safety protection during entry and exit from the cargo hold. After putting on the fall arrestor, the crew enters the cargo hold via the vertical ladder 3, which is fixed to the cargo hold. The lower inner end of hatch 1 extends into the cargo hold, providing a stable passage for crew members to ascend and descend. During the climb of vertical ladder 3, the fall arrestor 4 moves with the crew, and the safety rope 6 automatically extends and retracts according to the crew member's position, ensuring effective fall protection at any location. When the safety rope 6 experiences sudden tension, i.e., when a fall is detected, the braking device inside the fall arrestor 4 immediately activates, quickly locking the safety rope 6 and preventing it from extending further. Through this mechanism, the fall arrestor 4 can pull the crew member in a very short time, preventing serious injury from the fall. When it is necessary to use the locking mechanism outside hatch 2... When the fall arrestor 4 is activated, the locking hatch 2 must first be opened to the appropriate position. During this process, the first load-bearing rod 9 and the connecting vertical rod 10 at the end of the locking hatch 2 away from the cargo hatch opening 1 move accordingly. At this time, the crew lifts the connecting weighing rod 12 upward from the sliding groove 11 at the rear end of the cargo hatch opening 1, aligning the connecting vertical rod 10 with the pre-drilled hole on the connecting weighing rod 12. Once the connecting vertical rod 10 and the hole of the connecting weighing rod 12 are aligned, the crew slides the connecting weighing rod 12 upward along the sliding groove 11, allowing the connecting vertical rod 10 to pass through the connecting weighing rod 12, achieving the initial connection between the two. After the connecting vertical rod 10 is inserted into the connecting weighing rod 12... The locking operation begins. The annular connecting plate 14 is rotatably connected to the connecting plate 13, and multiple elastic connectors 16 are connected to the upper end of the annular connecting plate 14. Locking nuts 17 are fixed to the upper ends of the elastic connectors 16. The crew manually rotates the annular connecting plate 14, causing the locking nuts 17 to rotate around the connecting vertical rod 10. During the rotation, due to the elasticity of the elastic connectors 16, the locking nuts 17 will gradually move to the outside of the connecting vertical rod 10 until they are tightly fitted with the connecting vertical rod 10, thereby locking the connecting vertical rod 10 and keeping the locking hatch cover 2 in a limited position to prevent it from accidentally flipping down when subjected to external forces.

[0029] Second implementation method:

[0030] Figures 4-5This diagram illustrates a marine cargo hold hatch structure. A vertical ladder 3 extends into the cargo hold. A mesh reinforcing frame 5 is fixedly connected to the rear end of a fall arrester 4. The mesh reinforcing frame 5 is fixedly connected to a locking hatch 2. A sealing inner frame 18 is fixedly connected to one end of the locking hatch 2 near the cargo hold hatch 1. The sealing inner frame 18 and the cargo hold hatch 1 are interlocked, effectively preventing external water, dust, and foreign objects from entering the cargo hold. The mesh reinforcing frame 5 between the fall arrester 4 and the locking hatch 2 further enhances the structural stability. On the one hand, the mesh reinforcing frame 5 can disperse the tensile force borne by the fall arrester 4 during operation, reducing local pressure on the locking hatch 2. On the other hand, its fixed connection with the locking hatch 2 enhances the strength and rigidity of the entire hatch structure, ensuring that the connection between the fall arrester 4 and the locking hatch 2 remains stable during ship navigation, regardless of the operating conditions encountered. This improves the operational stability of the fall arrester 4 and ensures the safety of the crew.

[0031] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A cargo hold cover structure for a ship, characterized by: Including the cargo hold hatch (1), the upper end of the cargo hold hatch (1) is hinged to the locking hatch cover (2), the locking hatch cover (2) is fixedly connected with the anti-falling device (4) near one end of the cargo hold hatch (1), the locking hatch cover (2) is fixedly connected with the first load-bearing rod (9) away from one end of the cargo hold hatch (1), the outer side of the first load-bearing rod (9) is fixedly connected with the connecting vertical rod (10), the rear end of the cargo hold hatch (1) is provided with a sliding groove (11), the inner end of the sliding groove (11) is slidably connected with the connecting weighing rod (12), the connecting vertical rod (10) penetrates the connecting weighing rod (12) up and down, the rear end of the cargo hold hatch (1) is fixedly connected with the connecting plate (13), the upper end of the connecting plate (13) is fixedly connected with the anti-off convex column (15), the anti-off convex column (15) and the connecting plate (13) are rotatably connected with the annular connecting disc (14), the upper end of the annular connecting disc (14) is fixedly connected with a plurality of elastic connecting pieces (16), the upper end of the elastic connecting piece (16) is fixedly connected with the locking nut (17).

2. A hatch cover structure for a ship according to claim 1, characterized in that: The cargo hold hatch (1) and the locking hatch cover (2) are connected with each other, and the inner end of the anti-falling device (4) is provided with a safety rope (6).

3. A cargo hold cover structure for a ship according to claim 2, characterized in that: The end of the safety rope (6) away from the anti-falling device (4) is fixedly connected with a body strap (7), and the interface of the body strap (7) is provided with a buckle device (8).

4. A cargo hatch cover structure for a marine vessel as claimed in claim 1, wherein: The locking nut (17) and the connecting vertical rod (10) are threadedly connected, and a plurality of elastic connecting pieces (16) are annularly arranged outside the anti-off convex column (15).

5. A cargo hatch cover structure for a marine vessel as claimed in claim 1, wherein: The inner end of the cargo hold hatch (1) is fixedly connected with a vertical ladder (3), and the vertical ladder (3) extends to the inboard cargo hold.

6. A cargo hatch cover structure for a marine vessel as claimed in claim 1, wherein: The rear end of the anti-falling device (4) is fixedly connected with a net-shaped reinforcing rib frame (5), and the net-shaped reinforcing rib frame (5) is fixedly connected with the locking hatch cover (2).

7. A cargo hatch cover structure for a marine vessel as claimed in claim 1, wherein: The end of the locking hatch cover (2) near the cargo hold hatch (1) is fixedly connected with a sealing inner frame (18), and the sealing inner frame (18) and the cargo hold hatch (1) are mutually engaged.

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