Liftable side door structure of roll-on-roll-off ship

Abstract

The utility model discloses a liftable roll-on-roll-off ship side door structure which comprises a ship body broadside opening, a side door system and a lifting system, the side door system comprises a side door body, one end of the side door body is detachably connected with each layer of cargo deck broadside located within the height range of the ship body broadside opening, and the other end of the side door body is detachably connected with the lifting system. The lifting system is arranged at the opening in the side of the ship body, detachably connected with the side door body and used for driving the end, close to the ship body, of the side door body to move up and down between the multiple layers of cargo carrying decks. According to the liftable roll-on-roll-off ship side door structure, the loading and unloading efficiency and the effective usable area of a transfer area can be improved, the running track of a lane and the area of the transfer area can be flexibly adjusted according to the type and height of goods, the loading and unloading efficiency of a roll-on-roll-off channel system of the roll-on-roll-off ship is improved, and the operation cost of ships and wharfs is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of roll-on / roll-off ship technology, and specifically relates to a liftable roll-on / roll-off ship side door structure. Background Technology

[0002] Ro-Ro ships require rapid and efficient loading, unloading, and transfer of vehicles and cargo, and the effective utilization of the transfer area can improve the ship's operational efficiency. Traditional fixed side door structures are inefficient during loading and unloading and have limited transfer area space, failing to meet market demands. The liftable side door structure proposed in this paper can effectively improve loading and unloading efficiency and the effective utilization of the transfer area, demonstrating its promotional value and application prospects. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a liftable side door structure for ro-ro ships, which not only improves loading and unloading efficiency and the effective use of the transfer area, but also allows for flexible adjustment of the lane's running trajectory and the transfer area based on cargo type and height, thereby enhancing the loading and unloading efficiency of the ro-ro ship's loading and unloading channel system and reducing the operating costs of ships and docks.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A liftable roll-on / roll-off ship side door structure includes a hull side opening, a side door system, and a lifting system. The side door system includes a side door body, one end of which is detachably connected to the side of each cargo deck located within the height range of the hull side opening. The lifting system is located at the hull side opening and is detachably connected to the side door body, used to move the side door body up and down between multiple cargo decks near one end of the hull.

[0006] Furthermore, the lifting system includes two lifting guide rails and two lifting machines. The two lifting guide rails are mirror-symmetrically and perpendicularly arranged on both sides of the hull side opening along the length of the hull. The two lifting machines are slidably connected to one of the lifting guide rails. The top of each of the two lifting machines is connected to a cable reel via a cable. The two cable reels are located on the back of the highest cargo deck within the range of the hull side opening, close to the side opening of the hull.

[0007] Furthermore, a guide wheel is fixed at the top of each elevator body, and the cable passes around the guide wheel.

[0008] Furthermore, a set of lifting system connection holes are symmetrically arranged on both sides of the connection end between the side door body and the hull. The elevator includes an elevator body, and rollers are provided on the left and right sides of the elevator body. The rollers are slidably connected to the lifting guide rail. A pin assembly connected to the side door body is provided on the outer or inner side of the elevator body. When the side door is raised or lowered, the pin in the pin assembly extends into the lifting system connection hole.

[0009] Furthermore, the pin assembly includes a gear rotatably mounted on the side of the elevator body, and a rack is provided on the upper side wall of the pin along its length direction, the gear meshing with the pin.

[0010] Furthermore, a set of hull connection holes are symmetrically provided on both sides of the connection end between the side door body and the hull. The hull connection holes are located on the side of the elevator connection hole closer to the hull. Each cargo deck is symmetrically provided with hinges on both sides within the length range of the opening on the hull side. One end of the side door body is connected to the hull through a pin inserted into the hull connection hole and a locking positioner for the hinge.

[0011] Furthermore, the side door system also includes a side door opening and closing assembly, which includes multiple guide wheels and multiple cable reels. The multiple guide wheels are symmetrically arranged on the inner side of the side door body and on the hull sidewall relative to the centerline of the side door body in the height direction. The multiple cable reels are fixed on the hull opposite to the multiple guide wheels, and the oppositely arranged cable reels are connected to the guide wheels by steel cables.

[0012] Furthermore, multiple tires are rotatably connected to the outer side of the side door body that overlaps with the dock.

[0013] This utility model discloses a liftable side door structure for roll-on / roll-off (Ro-Ro) vessels. Both ends of the side door are free ends. Compared to traditional side doors, the fixed hinge at the end connected to the hull is replaced with a movable hinge, and a locking locator replaces the bolt. Two circular holes are opened on the end structure of the side door, corresponding to the locking locator and the elevator, respectively. When the side door needs to slide, the elevator extends into the side door's lifting hole, then the locking locator retracts and separates from the hinge. The cable reel then drives the elevator to slide the side door up and down. Once at the target position, the locking locator extends into the hinge hole, and then the elevator retracts and separates from the side door. This movable side door structure diversifies the loading and unloading methods of Ro-Ro vessels, increases the effective usable area of ​​the transfer area, optimizes the internal lane routes and layout of the Ro-Ro vessel, and allows operators more flexibility in their loading and unloading plans. Attached Figure Description

[0014] Figure 1 This utility model describes a liftable roll-on / roll-off ship side door structure.

[0015] Figure 2In working state Figure 1 The diagram shows a cross-sectional view AA.

[0016] Figure 3 In non-working state Figure 1 The diagram shows a cross-sectional view AA.

[0017] Among them, 1-hull, 2-cargo deck, 3-dock, 4-side door body, 5-cable reel, 6-cable reel platform, 7-movable ramp, 8-hinge, 9-guide wheel, 10-cable, 11-tire, 12-lifting guide rail, 13-lifting machine, 14-steel cable, 15-locking positioner, 16-hull side opening, 131-lifting machine body, 132-roller, 133-gear, 134-pin. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1-3 As shown, a liftable roll-on / roll-off ship side door structure includes a hull side opening 16, a side door system, and a lifting system. The side door system includes a side door body 4, one end of which is detachably connected to the side of each cargo deck 2 located within the height range of the hull side opening 16. The lifting system is located at the hull side opening 16 and is detachably connected to the side door body 4, used to drive the side door body 4 to move up and down between the multiple cargo decks 2 near the end of the hull 1.

[0020] Specifically, the lifting system includes two lifting guide rails 12 and two lifting machines 13. The two lifting guide rails 12 are mirror-symmetrically and vertically arranged on both sides of the hull side opening 16 along the length of the hull 1. The two lifting machines 13 are slidably connected to one of the lifting guide rails 12. The top of each of the two lifting machines 13 is connected to a cable reel 5 via a cable 10. The two cable reels 5 are located on a cable reel platform 6 on the back of the highest cargo deck 2 within the range of the hull side opening 16, close to the side of the hull side opening 16.

[0021] Furthermore, a set of lifting system connection holes are symmetrically arranged on both sides of the connection end between the side door body 4 and the hull 1. The elevator 13 includes an elevator body 131. Rollers 132 are provided on the left and right sides of the elevator body 131. The rollers 132 are slidably connected to the lifting guide rail 12. A pin assembly connected to the side door body 4 is provided on the outer or inner side of the elevator body 131. When the side door is raised or lowered, the pin in the pin assembly extends into the lifting system connection hole. A guide wheel 9 is fixed at the top of the elevator body 131. The cable 10 passes around the guide wheel 9.

[0022] In some embodiments, the pin assembly includes a gear 133 rotatably disposed on the side of the elevator body 131, and a rack is provided on the upper side wall of the pin 134 along its length direction, the gear 133 meshing with the pin 134.

[0023] To achieve a detachable connection between the side door body 4 and the hull 1, a set of hull connection holes are symmetrically provided on both sides of the connection end between the side door body 4 and the hull 1. The hull connection holes are located on the side of the elevator 13 connection hole closer to the hull 1. Each cargo deck 2 is provided with hinges 8 on both sides within the length range of the hull side opening 16. One end of the side door body 4 is connected to the hull 1 through a pin 134 inserted into the hull connection hole and a locking positioner 15 of the hinge 8.

[0024] In some embodiments, the side door system further includes a side door opening and closing assembly, which includes a plurality of guide wheels 9 and a plurality of cable reels 5. The plurality of guide wheels 9 are symmetrically arranged on the inner side of the side door body 4 and on the hull sidewalls relative to the centerline in the height direction of the side door body 4. The plurality of cable reels 5 are fixed to the hull 1 and are arranged opposite to the plurality of guide wheels 9. The oppositely arranged cable reels 5 are connected to the guide wheels 9 by steel cables. It can be understood that the opening and closing of the side door is achieved by winding the steel cables by the cable reels 5.

[0025] Furthermore, multiple tires 11 are rotatably connected to the outer side of the side door body 4 on the side that overlaps with the dock 3.

[0026] Those skilled in the art should understand that the above description is merely a specific embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liftable side door structure for a roll-on / roll-off ship, characterized in that, The system includes a hull side opening, a side door system, and a lifting system. The side door system includes a side door body, one end of which is detachably connected to the side of each cargo deck located within the height range of the hull side opening. The lifting system is located at the hull side opening and is detachably connected to the side door body, used to move the side door body up and down between multiple cargo decks near one end of the hull.

2. The liftable roll-on / roll-off ship side door structure according to claim 1, characterized in that, The lifting system includes two lifting guide rails and two lifting machines. The two lifting guide rails are mirror-symmetrically arranged perpendicularly on both sides of the hull side opening along the length of the hull. The two lifting machines are slidably connected to one of the lifting guide rails. The top of each of the two lifting machines is connected to a cable reel via a cable. The two cable reels are located on the back of the highest cargo deck within the range of the hull side opening, close to the side opening of the hull.

3. The liftable roll-on / roll-off ship side door structure according to claim 2, characterized in that, A guide wheel is fixed at the top of each elevator body, and the cable passes around the guide wheel.

4. The liftable roll-on / roll-off ship side door structure according to claim 2, characterized in that, A set of lifting system connection holes are symmetrically arranged on both sides of the connection end between the side door body and the hull. The elevator includes an elevator body, and rollers are provided on the left and right sides of the elevator body. The rollers are slidably connected to the lifting guide rail. A pin assembly connected to the side door body is provided on the outer or inner side of the elevator body. When the side door is raised or lowered, the pin in the pin assembly extends into the lifting system connection hole.

5. The liftable roll-on / roll-off ship side door structure according to claim 4, characterized in that, The pin assembly includes a gear rotatably mounted on the side of the elevator body, and a rack is provided on the upper side wall of the pin along its length direction, the gear meshing with the pin.

6. The liftable roll-on / roll-off ship side door structure according to claim 4, characterized in that, A set of hull connection holes are symmetrically provided on both sides of the connection end between the side door body and the hull. The hull connection holes are located on the side of the elevator connection hole closer to the hull. Each cargo deck is symmetrically provided with hinges on both sides within the length range of the opening on the hull side. One end of the side door body is connected to the hull through a pin inserted into the hull connection hole and a locking positioner of the hinge.

7. The liftable roll-on / roll-off ship side door structure according to claim 1, characterized in that, The side door system also includes a side door opening and closing assembly, which includes multiple guide wheels and multiple cable reels. The multiple guide wheels are symmetrically arranged on the inner side of the side door body and on the side wall of the hull relative to the centerline of the side door body in the height direction. The multiple cable reels are fixed on the hull opposite to the multiple guide wheels. The oppositely arranged cable reels are connected to the guide wheels by steel cables.

8. The liftable roll-on / roll-off ship side door structure according to claim 1, characterized in that, Multiple tires are rotatably connected to the outer side of the side door body that overlaps with the dock.

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