A connecting structure of a roll-on / roll-off ship ramp and deck

Abstract

The utility model discloses a kind of connecting structure of roll-on / roll-off ship gangway and deck junction, to solve the problem that the gap exists between the gangway and deck of existing roll-on / roll-off ship due to no connecting cover plate, leading to vehicle jam, personnel injury and equipment corrosion. The tile type plate includes deck, gangway and cover plate, wherein the side of cover plate is slidably connected with deck, and the other side is rotatably connected with gangway. During use, the side of cover plate connected with gangway rotates synchronously with gangway during folding or lowering and overturning, and the side connected with deck slides along deck, always covering the gap between them; after gangway is positioned, cover plate forms a smooth transition surface between deck and gangway. This scheme can eliminate the safety hazard caused by gap, ensure the safety of personnel and goods passing, and at the same time, there is no interference in the adaptation of gangway movement, ensuring smooth loading and unloading, and being suitable for the connection scene of roll-on / roll-off ship gangway and deck.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, and in particular to a connection structure at the connection between the gangway and the deck of a roll-on / roll-off ship. Background Technology

[0002] In the modern water transportation sector, roll-on / roll-off (Ro-Ro) ships, as specialized vessels designed for transporting vehicles (including cars, trucks, and container trucks) and cargo that can be loaded on a rolling basis, occupy a crucial position in domestic and international trade, as well as coastal and inland waterway transportation, due to their advantages such as high loading and unloading efficiency and convenient cargo transportation. One of the core components of Ro-Ro ships for cargo loading and unloading is the gangway, which is usually rotatably connected to the edge of the ship's deck. After the ship docks, the gangway is controlled by hydraulic drive and mechanical transmission to rotate around the rotatable connection point, so that the free end of the gangway makes smooth contact with the shore slope or loading and unloading platform of the land terminal, thus forming a continuous passageway extending from the ship's deck to the land. Vehicles can drive autonomously along this passageway to complete loading and unloading operations, and passengers can also use this passageway to board and disembark. However, a key technical flaw exists in the current design and application of ramps for roll-on / roll-off ships: the rotating connection between the ramp and the deck lacks a dedicated cover structure for connection. Specifically, because the ramp needs to rotate around the connection point, a certain installation and movement clearance is reserved between the ramp and the deck to avoid motion interference. Furthermore, due to factors such as the machining precision of parts during shipbuilding, assembly errors, and wear and deformation of structural components after long-term use, the clearance between the ramp and the deck will become more apparent or widen. The gap created by the lack of connecting covers poses a significant safety hazard to loading and unloading operations and personnel passage on roll-on / roll-off ships. On the one hand, when vehicles (especially cars and small trucks with smaller tires) pass through the connection between the gangway and the deck, their tires can easily get stuck in the gap. This can not only damage the vehicle chassis and cause the tires to become stuck, but in severe cases, it can also cause the vehicle to stall, become unable to pass normally, or even lose control, leading to loading and unloading accidents and threatening the safety of vehicles and cargo. On the other hand, for passengers boarding and disembarking through the connection between the gangway and the deck, this gap could cause their feet to get stuck, especially for the elderly, children, and other people with mobility impairments, who are more likely to fall and get injured, seriously affecting passenger safety and posing a potential risk to their lives and health. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a connection structure for the connection between the gangway and the deck of a roll-on / roll-off ship.

[0004] A connection structure for the connection between a ramp and a deck of a roll-on / roll-off ship, designed for this purpose, includes a deck, a ramp, and a cover plate; one side of the cover plate is slidably connected to the deck, and the other side is rotatably connected to the ramp.

[0005] Preferably, an end round steel bar is fixedly connected to the side of the cover plate that connects to the deck; the end round steel bar is slidably connected to the deck.

[0006] Preferably, a hinge end sleeve is fixedly provided on the side of the cover plate connected to the jump plate; a hinge middle sleeve is fixedly provided on the jump plate; the hinge end sleeve and the hinge middle sleeve are coaxially arranged and a hinge pivot is rotatably provided inside both.

[0007] Preferably, the upper surface of the cover plate is provided with an anti-slip structure.

[0008] Preferably, the anti-slip structure includes a plurality of anti-slip strips disposed on the upper surface of the cover plate.

[0009] Preferably, the lower surface of the cover plate is provided with several reinforcing ribs.

[0010] Preferably, the cover plate has an arc-shaped structure.

[0011] Compared with the prior art, the cover plate of this utility model can completely cover the gap between the gangway and the deck, avoiding the problem of chassis damage, jamming or loss of control caused by tires getting stuck in the gap when vehicles pass through. At the same time, it prevents passengers (especially the elderly and children) from getting their feet stuck or falling. It fundamentally solves the threat to personnel and cargo safety posed by the existing structure and greatly improves the safety of loading and unloading operations and personnel passage on roll-on / roll-off ships.

[0012] Meanwhile, the dual connection method of the cover plate, which slides on one side of the deck and rotates on the other side of the gangplank, allows the position to be adaptively adjusted as the gangplank flips: when the gangplank flips around the point of rotation with the deck, the side of the cover plate connected to the gangplank rotates synchronously with the gangplank, while the side connected to the deck slides along the deck. This ensures that the cover plate always effectively covers the gap during the gangplank flipping process, and avoids motion interference between the cover plate and the deck and gangplank, ensuring that the normal loading and unloading function of the gangplank is not affected. Attached Figure Description

[0013] Figure 1 This is a diagram showing the springboard in its deployed state. Figure 2 This is a diagram showing the springboard in its retracted state. Figure 3 This is a schematic diagram of the planar structure of the cover plate. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] See Figures 1-3 A connection structure for the connection between a ramp and a deck of a roll-on / roll-off ship includes a deck 10, a ramp 20, and a cover plate 30; one side of the cover plate 30 is slidably connected to the deck 10, and the other side is rotatably connected to the ramp 20.

[0016] The principle of using the corrugated plate at the connection between the ramp and the deck of the roll-on / roll-off ship in this solution is as follows: When the roll-on / roll-off ship is underway or not requiring loading / unloading operations, the ramp 20 is in the retracted state. At this time, the ramp 20 rotates upwards around its rotational connection point with the deck 10, fitting against the side of the hull or the edge of the deck. During this process, the cover plate 30, which is rotatably connected to the ramp 20, moves synchronously with the rotation of the ramp 20: the side of the cover plate 30 closest to the ramp 20 rotates upwards with the ramp 20, while the side closest to the deck 10 slides away from the ramp 20 along the sliding connection structure of the deck 10 (such as a pre-set rail, chute, etc.), ultimately causing the ramp to be in the retracted state (e.g., ...). Figure 1 (As shown). When a roll-on / roll-off (Ro-Ro) vessel docks for loading and unloading operations, the gangplank 20 is lowered: the gangplank 20 slowly flips downwards around its rotating connection point with the deck 10, gradually approaching the land-based dock slope or platform. At this time, the side of the cover plate 30 connected to the gangplank 20 rotates downwards synchronously with the lowering of the gangplank 20, while the side connected to the deck 10 slides smoothly along the sliding structure of the deck 10 towards the gangplank 20. Throughout the flipping process, the cover plate 30 adaptively adjusts its angle and position in a manner where "the rotating end moves with the gangplank, and the sliding end moves along the deck," ensuring that the surface of the cover plate 30 continuously covers the dynamic gap between the gangplank 20 and the deck 10 created by the flipping, preventing any gap exposure.

[0017] See Figure 2 and Figure 3An end round steel bar 60 is fixedly connected to the side of the cover plate 30 that connects to the deck 10; the end round steel bar 60 is slidably connected to the deck 10. As the core component for the slidable connection between the cover plate 30 and the deck 10, the end round steel bar 60 plays a key role in three aspects: First, it enables smooth sliding adaptation. The arc-shaped structure of the round steel bar reduces the frictional resistance of the sliding contact surface with the deck 10, allowing the cover plate 30 to slide smoothly along the deck 10 when it flips with the ramp 20, avoiding jamming and ensuring that the cover plate 30 always accurately covers the gap. Second, it protects the connection structure. Compared to the cover plate 30 directly contacting and sliding with the deck 10, the round steel bar reduces wear on the end of the cover plate 30, extending its service life, while preventing damage to the sliding area of ​​the deck 10 due to friction. Third, it ensures a smooth connection, making the transition surface between the cover plate 30 and the deck 10 an arc surface, ensuring that the vehicle's tires can pass smoothly.

[0018] Furthermore, the deck 10 is provided with a slide rail or a slide groove; the end of the end round steel 60 is slidably disposed in the slide rail or slide groove.

[0019] See Figure 3 A hinge end sleeve 310 is fixedly provided on the side of the cover plate 30 connected to the jump plate 20; a hinge middle sleeve 330 is fixedly provided on the jump plate 20; the hinge end sleeve 310 and the hinge middle sleeve 330 are coaxially arranged and a hinge pivot 320 is rotatably arranged inside both.

[0020] In this invention, the upper surface of the cover plate 30 is provided with an anti-slip structure.

[0021] See Figure 2 and Figure 3 The anti-slip structure includes a plurality of anti-slip strips 40 disposed on the upper surface of the cover plate 30. Alternatively, anti-slip is achieved by providing anti-slip grooves on the upper surface of the cover plate 30.

[0022] See Figure 2 The lower surface of the cover plate 30 is provided with several reinforcing ribs 50. The reinforcing ribs 50 can improve the structural strength of the cover plate, prevent it from bending and deforming under the load of vehicles and personnel, and at the same time distribute the load, reduce stress concentration, reduce the burden on the connection parts, extend the service life of the cover plate and the connection structure, and ensure safe use.

[0023] See Figure 1 and Figure 2 The cover plate 30 has an arc-shaped structure. The arc-shaped structure of the cover plate 30 can better adapt to the dynamic trajectory of the springboard 20 when it flips, and avoid movement jamming.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connection structure at the junction of a ramp and a deck on a roll-on / roll-off ship, characterized in that: It includes a deck (10), a gangway (20), and a cover plate (30); one side of the cover plate (30) is slidably connected to the deck (10), and the other side is rotatably connected to the gangway (20); The end round steel (60) is fixedly connected to the side of the cover plate (30) that is connected to the deck (10); the end round steel (60) is slidably connected to the deck (10).

2. The connection structure at the junction of the ramp and deck of a roll-on / roll-off ship according to claim 1, characterized in that: A hinge end sleeve (310) is fixedly provided on the side of the cover plate (30) connected to the jump plate (20); a hinge middle sleeve (330) is fixedly provided on the jump plate (20); the hinge end sleeve (310) and the hinge middle sleeve (330) are coaxially arranged and a hinge pivot (320) is rotatably provided inside both.

3. The connection structure at the junction of the ramp and deck of a roll-on / roll-off ship according to claim 1, characterized in that: The upper surface of the cover plate (30) is provided with an anti-slip structure.

4. The connection structure at the junction of the ramp and deck of a roll-on / roll-off ship according to claim 3, characterized in that: The anti-slip structure includes a plurality of anti-slip strips (40) disposed on the upper surface of the cover plate (30).

5. The connection structure at the junction of the ramp and deck of a roll-on / roll-off ship according to claim 1, characterized in that: The lower surface of the cover plate (30) is provided with several reinforcing ribs (50).

6. The connection structure at the junction of the ramp and deck of a roll-on / roll-off ship according to claim 1, characterized in that: The cover plate (30) has an arc-shaped structure.

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