A type of ramp top rise deck structure for roll-on / roll-off ships

Abstract

This application relates to a ramp top riser deck structure for ro-ro ships, belonging to the field of ro-ro ship technology and equipment. It includes a bottom deck, on which an upper deck is disposed, forming a parking passage between the bottom and upper decks. A parking plate is disposed inside the parking passage, and a ratchet assembly is provided at the bottom end of the parking plate and the bottom deck. When the ratchet assembly is engaged, it restricts the downward rotation of the parking plate. A lifting assembly is disposed below the upper deck, connected to the parking plate, and drives the parking plate to rotate upward. This application has the advantage of reducing operating costs by eliminating the need for continuous start-up using hydraulic rods and long-term operation of forward and reverse motors.

Description

Technical Field

[0001] This application relates to the field of roll-on / roll-off (Ro-Ro) ship technology and equipment, and in particular to a Ro-Ro ship ramp top rise deck structure. Background Technology

[0002] Currently, a roll-on / roll-off ferry refers to a cargo ship that allows vehicles or rolling pallets loaded with containers or parcels to directly enter and exit the cargo hold for loading and unloading. The ship lacks cargo handling equipment, has no cargo hatches on the upper deck, and has ramps at the stern, bow, or sides for vehicles to board and alight independently. Forklifts or tractors can also tow vehicles into and out of the cargo hold. Below the upper deck are multiple decks, horizontally divided into multiple cargo holds. There are no transverse bulkheads within the cargo area. Traffic between the upper and lower cargo holds is facilitated by movable (or fixed) ramps or lifting platforms located between decks. The cargo holds are equipped with complete ventilation and fire-fighting systems. This allows for the timely removal of exhaust gases emitted by motor vehicles during loading and unloading, ensuring safe operation. By changing the traditional vertical loading and unloading to horizontal loading and unloading, loading and unloading efficiency is greatly improved, and ship turnaround is accelerated. It is suitable for short-distance transportation, loading and unloading without loading and unloading bridges, and transportation of oversized cargo. When transporting vehicles, ferries adopt a ramp-top raised deck structure to increase space utilization, allowing the vehicle parking position to rotate and utilize the vertical space. This can generate a certain amount of charging when the vehicle is parked, thus enabling the transport of more vehicles.

[0003] Regarding the aforementioned technologies, the inventors believe that the current ramp top rise deck structure of roll-on / roll-off ships is unstable after vehicles are parked, requiring the hydraulic starter to be kept at an angle, which increases transportation costs. Utility Model Content

[0004] In order to eliminate the need for continuous starting with hydraulic rods and long-term operation of forward and reverse motors, thereby reducing operating costs, this application provides a ramp top elevation deck structure for roll-on / roll-off ships.

[0005] This application provides a ro-ro ship ramp top rise deck structure, which adopts the following technical solution:

[0006] A ramp top riser deck structure for a roll-on / roll-off vessel includes a bottom deck, an upper deck on the bottom deck, a parking passage between the bottom deck and the upper deck, a parking plate inside the parking passage, a ratchet assembly at the bottom end of the parking plate and the bottom deck, the ratchet assembly restricting the parking plate from rotating downward when engaged, and a lifting assembly below the upper deck, the lifting assembly connected to the parking plate, the lifting assembly driving the parking plate to rotate upward.

[0007] Optionally, the ratchet assembly includes a mounting cylinder fixed to the bottom deck, a rotating shaft rotatably connected inside the mounting cylinder, a first rotating cavity formed in the side wall of the mounting cylinder, the parking plate being fixed to the rotating shaft through the first rotating cavity, a second rotating cavity formed in the side wall of the mounting cylinder, a ratchet fixedly connected at the position of the rotating shaft in the second rotating cavity, a rotating shaft horizontally rotatably connected to the mounting cylinder, a ratchet tooth fixedly connected to the rotating shaft to mesh with the ratchet, and an elastic element provided on the mounting cylinder, the elastic element being fixedly connected to the side wall of the ratchet tooth.

[0008] Optionally, a rotating motor is fixedly connected to the mounting cylinder, and a fixed shaft is fixedly connected to the motor shaft of the rotating motor. The end of the elastic element facing away from the ratchet is fixedly connected to the side wall of the fixed shaft.

[0009] Optionally, a mounting plate is fixedly connected to the side wall of the mounting cylinder, and the rotating shaft is located on the mounting plate and rotatably connected to the mounting plate.

[0010] Optionally, the fixed shaft is located on the mounting plate, and the fixed shaft is rotatably connected to the mounting plate.

[0011] Optionally, the hoisting assembly includes a winding column, a pull rope is provided on the side wall of the winding column, one end of the pull rope is fixedly connected to the side wall of the winding column, the other end of the pull rope is fixedly connected to the parking plate, and a forward and reverse motor is provided on one side of the winding column to drive the winding column to rotate.

[0012] Optionally, the end of the pull rope away from the winding post is fixedly connected to the end of the parking plate, and the connection end of the pull rope to the parking plate is located at the end away from the hinge point between the parking plate and the bottom deck.

[0013] Optionally, multiple parking plates are arranged inside the parking channel, and the multiple parking plates are evenly arranged inside the parking channel.

[0014] Optionally, the top of the parking plate is provided with friction grooves.

[0015] Optionally, cable ties for securing wheel hubs are fixedly connected to the parking plate.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. The forward and reverse motors drive the take-up column to rotate. When the vehicle is parked on the parking platform, the platform gradually rotates, causing the vehicle to tilt. When the tilt angle is reached, the ratchet engages with the ratchet wheel under the action of the spring. At this time, the weight of the vehicle itself presses the parking platform downwards. The ratchet and ratchet cooperate to stop the ratchet from rotating. The shaft does not rotate at this time, which can fix the parking platform. This eliminates the need for continuous start-up of the hydraulic rod and long-term operation of the forward and reverse motors, greatly reducing operating costs. At the same time, the greater the weight of the vehicle itself, the more stable the parking platform is. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a ramp top elevation deck structure for a roll-on / roll-off ship, as described in this application.

[0019] Figure 2 This is a bottom view of a roll-on / roll-off ship ramp top elevation deck structure according to an embodiment of this application.

[0020] Figure 3 yes Figure 1 Enlarged view of part A in the middle.

[0021] Figure 4 This is a schematic diagram of the ratchet and pawl structure of a ramp top elevation deck structure for a roll-on / roll-off ship, as described in an embodiment of this application.

[0022] Figure 5 yes Figure 2 Enlarged view of section B.

[0023] Explanation of reference numerals in the attached drawings: 1. Bottom deck; 2. Upper deck; 3. Parking plate; 4. Lifting assembly; 41. Rewinding column; 42. Pull rope; 5. Ratchet assembly; 51. Mounting cylinder; 511. First rotating cavity; 512. Second rotating cavity; 52. Rotating shaft; 53. Ratchet; 54. Mounting plate; 55. Rotating shaft; 56. Ratchet tooth; 57. Fixed shaft; 58. Spring; 59. Connecting plate. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0026] Currently, a roll-on / roll-off ferry refers to a cargo ship that allows vehicles or rolling pallets loaded with containers or parcels to directly enter and exit the cargo hold for loading and unloading. The ship lacks cargo handling equipment, has no cargo hatches on the upper deck, and has ramps at the stern, bow, or sides for vehicles to board and alight independently. Forklifts or tractors can also tow vehicles into and out of the cargo hold. Below the upper deck are multiple decks, horizontally divided into multiple cargo holds. There are no transverse bulkheads within the cargo area. Traffic between the upper and lower cargo holds is facilitated by movable (or fixed) ramps or lifting platforms located between decks. The cargo holds are equipped with complete ventilation and fire-fighting systems. This allows for the timely removal of exhaust gases emitted by motor vehicles during loading and unloading, ensuring safe operation. By changing the traditional vertical loading and unloading to horizontal loading and unloading, loading and unloading efficiency is greatly improved, and ship turnaround is accelerated. It is suitable for short-distance transportation, loading and unloading without loading and unloading bridges, and transportation of oversized cargo. When transporting vehicles, ferries adopt a ramp-top raised deck structure to increase space utilization, allowing the vehicle parking position to rotate and utilize the vertical space. This can generate a certain amount of charging when the vehicle is parked, thus enabling the transport of more vehicles.

[0027] Regarding the aforementioned technologies, the inventors believe that the current ramp top rise deck structure of roll-on / roll-off ships is unstable after vehicles are parked, requiring the hydraulic starter to be kept at an angle, which increases transportation costs.

[0028] In order to eliminate the need for continuous starting with hydraulic rods and long-term operation of forward and reverse motors, thereby reducing operating costs, this application provides a ramp top elevation deck structure for roll-on / roll-off ships.

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses a ramp top rise deck structure for roll-on / roll-off (Ro-Ro) vessels. (Refer to...) Figure 1 , Figure 2 A ramp-top raised deck structure for a roll-on / roll-off vessel includes a bottom deck 1 and an upper deck 2 located above the bottom deck 1, with the bottom deck 1 and upper deck 2 arranged in parallel. A gap is left between the top wall of the bottom deck 1 and the bottom wall of the upper deck 2 to form a parking passage for parking vehicles.

[0031] A parking platform 3 is installed below the upper deck 2, and a lifting assembly 4 is installed below the upper deck 2 relative to the parking platform 3. The lifting assembly 4 is used to lift the parking platform 3 into an inclined state, thereby supporting the vehicle through the parking platform 3. A parking platform 3 is installed above the lower deck 1, and a ratchet assembly 5 is installed above the lower deck 1 relative to the parking platform 3. The ratchet assembly 5 supports the parking platform 3. When the ratchet assembly 5 is engaged, it restricts the parking platform 3 from rotating downwards to a horizontal state. When the ratchet assembly 5 is disengaged, it disengages from the parking platform 3, allowing the parking platform 3 to rotate downwards to a horizontal state.

[0032] Reference Figure 1 , Figure 3 The ratchet assembly 5 includes a mounting cylinder 51, which is horizontally positioned and fixedly connected to the bottom deck 1. A rotating shaft 52 is coaxially disposed inside the mounting cylinder 51 and rotatably connected to the mounting cylinder 51. A first rotating cavity 511 is formed on the side wall of the mounting cylinder 51, penetrating the side wall and through which the rotating shaft 52 communicates with the outside.

[0033] A ratchet 53 is coaxially provided on the side wall of the rotating shaft 52. The ratchet 53 is fixedly connected to the rotating shaft 52 and is located inside the first rotating cavity 511. The side wall of the ratchet 53 extends out from the side wall of the first rotating cavity 511.

[0034] Mounting plates 54 are fixedly connected to the mounting cylinder 51. The mounting plates 54 are respectively located on both sides of the first rotating cavity 511, and the line connecting the two opposite mounting plates 54 is arranged along the axis of the mounting cylinder 51. A rotating shaft 55 is horizontally arranged between the two opposite mounting plates 54, and the two ends of the rotating shaft 55 are rotatably connected to the mounting plates 54. A ratchet 56 is fixedly connected to the outer wall of the rotating shaft 55. The ratchet 56 is opposite to the ratchet 53, and the ratchet 56 and the ratchet 53 are meshed. When the ratchet 53 and the ratchet 56 are meshed, the ratchet 53 can only rotate in one direction. When the ratchet 56 is disengaged from the ratchet 53, the ratchet 53 can rotate in both directions.

[0035] Reference Figure 3 , Figure 4 A fixed shaft 57 is horizontally arranged between the two opposing mounting plates 54. The fixed shaft 57 is parallel to the rotating shaft 55, and its end is rotatably connected to the mounting plate 54. A spring 58 is mounted on the fixed shaft 57, with one end fixedly connected to the fixed shaft 57 and the other end fixedly connected to the side wall of the ratchet 56. A rotary cylinder is fixedly connected to the mounting plate 54, with its output end coaxial with and fixedly connected to the fixed shaft 57.

[0036] The side wall of the mounting cylinder 51 is provided with a second rotating cavity 512. The second rotating cavity 512 connects the side wall of the rotating shaft 52 to the outside. A connecting plate 59 is fixedly connected to the rotating shaft 52 at the position of the second rotating cavity 512. One end of the connecting plate 59 is fixedly connected to the rotating shaft 52, and the other end of the connecting plate 59 is fixedly connected to the parking plate 3. Thus, the rotating shaft 52 drives the parking plate 3 to rotate synchronously through the connecting plate 59.

[0037] With the spring 58 in place, the ratchet 56 engages with the ratchet 53. At this time, the weight of the vehicle itself presses the parking plate 3 downward to rotate. The ratchet 56 and the ratchet 53 cooperate with each other, so that the ratchet 53 stops rotating. At this time, the shaft 52 does not rotate, which can fix the parking plate 3.

[0038] The spring 58 pulls the ratchet 56 downward, keeping the ratchet 56 engaged with the ratchet 53, so that the ratchet 53 can only rotate in one direction. The rotary cylinder drives the fixed shaft 57 to rotate, and the fixed shaft 57 drives the ratchet 56 to rotate, which can make the ratchet 53 and the ratchet 56 lose their engagement force, thus facilitating the bidirectional rotation of the parking plate 3.

[0039] Reference Figure 2 , Figure 5 The hoisting assembly 4 includes a take-up column 41, which is horizontally arranged and rotatably connected to the upper deck 2. A forward and reverse motor is provided at the position of the bottom wall of the upper deck 2 relative to the take-up column 41. The motor shaft of the forward and reverse motor is coaxial with and fixedly connected to the take-up column 41, and the forward and reverse motor drives the take-up column 41 to rotate forward and reverse.

[0040] A pull rope 42 is installed on the side wall of the winding column 41. One end of the pull rope 42 is fixedly connected to the side wall of the winding column 41, and the other end of the pull rope 42 is fixedly connected to the side wall of the parking plate 3. The position where the pull rope 42 connects to the parking plate 3 is located at the end of the parking plate 3 opposite to the hinged end with the bottom deck 1. The pull rope 42 is wound around or unwound from the winding column 41 by a forward and reverse motor, thereby causing the parking plate 3 to rotate upward or downward.

[0041] Multiple parking platforms 3 are evenly distributed between the upper deck 2 and the lower deck 1. The top of each parking platform 3 has friction grooves to increase the friction between the platform and the vehicle. Cable straps for securing wheel hubs are fixedly connected to each parking platform 3, increasing the stability of the parked vehicle.

[0042] In this application, the term "multiple" refers to at least two or more, unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A roll-on / roll-off vessel ramp jacking high deck structure, characterized by: It includes a bottom deck (1), an upper deck (2) is provided on the bottom deck (1), a parking channel is formed between the bottom deck (1) and the upper deck (2), a parking plate (3) is provided inside the parking channel, a ratchet assembly (5) is provided at the bottom end of the parking plate (3) and the bottom deck (1), the ratchet assembly (5) restricts the parking plate (3) from rotating downward when engaged, a hoisting assembly (4) is provided below the upper deck (2), the hoisting assembly (4) is connected to the parking plate (3), and the hoisting assembly (4) drives the parking plate (3) to rotate upward.

2. The ro-ro ship ramp jacking up deck structure according to claim 1, characterized in that: The ratchet assembly (5) includes a mounting cylinder (51) fixed on the bottom deck (1). A rotating shaft (52) is rotatably connected inside the mounting cylinder (51). A first rotating cavity (511) is opened on the side wall of the mounting cylinder (51). The parking plate (3) is fixed to the rotating shaft (52) through the first rotating cavity (511). A second rotating cavity (512) is opened on the side wall of the mounting cylinder (51). A ratchet (53) is fixedly connected to the rotating shaft (52) at the position of the second rotating cavity (512). A rotating shaft (55) is rotatably connected horizontally on the mounting cylinder (51). A ratchet tooth (56) that meshes with the ratchet tooth (53) is fixedly connected to the rotating shaft (55). An elastic element is provided on the mounting cylinder (51). The elastic element is fixedly connected to the side wall of the ratchet tooth (56).

3. The ro-ro ship ramp jacking high deck structure according to claim 2, characterized in that: A rotating motor is fixedly connected to the mounting cylinder (51), and a fixed shaft (57) is fixedly connected to the motor shaft of the rotating motor. The end of the elastic element away from the ratchet (56) is fixedly connected to the side wall of the fixed shaft (57).

4. The ro-ro ship ramp jacking up deck structure according to claim 3, characterized in that: The mounting cylinder (51) has a mounting plate (54) fixedly connected to its side wall. The rotating shaft (55) is located on the mounting plate (54) and is rotatably connected to the mounting plate (54).

5. The ro-ro ship ramp jacking up deck structure according to claim 4, characterized in that: The fixed shaft (57) is located on the mounting plate (54), and the fixed shaft (57) is rotatably connected to the mounting plate (54).

6. The ro-ro ship ramp jacking up deck structure according to claim 1, characterized in that: The hoisting assembly (4) includes a take-up column (41), and a pull rope (42) is provided on the side wall of the take-up column (41). One end of the pull rope (42) is fixedly connected to the side wall of the take-up column (41), and the other end of the pull rope (42) is fixedly connected to the parking plate (3). A forward and reverse motor that drives the take-up column (41) to rotate is provided on one side of the take-up column (41).

7. The ro-ro ship ramp jacking high deck structure according to claim 6, characterized in that: The end of the pull rope (42) away from the winding post (41) is fixedly connected to the end of the parking plate (3), and the connection end of the pull rope (42) and the parking plate (3) is located away from the hinge point between the parking plate (3) and the bottom deck (1).

8. The ro-ro ship ramp jacking up deck structure according to claim 1, characterized in that: Multiple parking plates (3) are arranged inside the parking channel, and the multiple parking plates (3) are evenly arranged inside the parking channel.

9. The ro-ro ship ramp jacking up deck structure according to claim 1, characterized in that: The top of the parking plate (3) is provided with friction diagonal grooves.

10. The ro-ro ship ramp jacking up deck structure according to claim 1, characterized in that: Cable ties for securing wheel hubs are fixedly connected to the parking plate (3).

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