Extended connection device

Abstract

The present invention provides an extendable connection device, wherein the extendable connection device includes a transfer platform and at least one extendable ramp, wherein the at least one extendable ramp is disposed on the side of the transfer platform and is movably disposed at the end of the transfer platform, and is drivably switchable between an extended position and a retracted position; when the extendable ramp is in the extended position, the extendable connection device is in a connection operation state, wherein the extendable ramp extends and protrudes outward from one side of the transfer platform; when the extendable ramp is in the retracted position, the extendable connection device is in a platform retracted state, and the extendable ramp is rotated to be above the transfer platform.

Description

Technical Field

[0001] This invention relates to the field of waterway transportation, and more particularly to an extended connection device. Background Technology

[0002] Ro-Ro ships are small, medium, and large specialized vessels designed and built specifically for transporting vehicles and passengers. They are equipped with dedicated ro-ro equipment for transferring vehicles between the ship and shore. This dedicated ship-to-shore ro-ro equipment includes bow ramps, side ramps, stern straight ramps, and stern ramps.

[0003] Civilian Ro-Ro ships typically include passenger Ro-Ro ships, vehicle Ro-Ro ships, and PCTCs. As specialized transport vessels, civilian Ro-Ro ships are custom-designed and manufactured for specific routes, vehicle types, and terminals, resulting in limited versatility. When civilian Ro-Ro ships and transshipment vessels are moored laterally, vehicles are transferred primarily using two types of specialized equipment. One method is loading and unloading vehicles using a stern straight ramp. Due to the varying sizes and displacements of Ro-Ro ships, the dimensions of the ramps and their adaptability to different terminal elevations vary greatly. Dedicated Ro-Ro terminals typically use adjustable-height dock connecting bridges for docking. The other method involves PCTCs and some large Ro-Ro ships equipped with a stern angled ramp for loading and unloading vehicles. These ramps are generally over 20 meters long and do not require a dedicated dock connecting bridge. However, they have poor adaptability to different terminal elevations and are heavy, typically weighing over 50 tons, and for some ship types, exceeding 100 tons. The ramps are generally angled towards the stern at approximately 35 degrees from the ship's centerline, placing extremely high demands on the load-bearing capacity of the transfer equipment.

[0004] Existing roll-on / roll-off (Ro-Ro) vessels vary greatly in length / width, ramp type, and vehicle deck height. This necessitates the use of transfer equipment of different sizes, heights (above the waterline), and transshipment directions to connect with them. These factors prevent the current availability of universal transfer vessels and equipment suitable for different Ro-Ro vessels. Summary of the Invention

[0005] A key advantage of this invention is that it provides an extended connection device, which is a core functional device specially developed and designed by the transfer ship to achieve the purpose of vehicle transfer, and is a connection interface connecting the ro-ro ship ramp and the transfer ship.

[0006] Another advantage of the present invention is that it provides an extended docking device that can be effectively, reliably, and safely docked with different types of roll-on / roll-off ship gangway equipment.

[0007] Another advantage of the present invention is that it provides an extended docking device that can adapt to the ship's motion and relative motion between ships under the design sea conditions.

[0008] Another advantage of the present invention is that it provides an extended connection device that can adapt to combined loads under design sea conditions, including wave loads, lap ramp loads, and transshipment vehicle loads.

[0009] Another advantage of the present invention is that it provides an extendable docking device, wherein the extendable docking device can realize a quick retraction function, which is a ship docking interface in the working state, and can not affect navigation and berthing of roll-on / roll-off ships in the retracted state.

[0010] Another advantage of the present invention is that it provides an extended connection device that can meet the requirements of fast, efficient and safe passage of the designed vehicle.

[0011] According to one aspect of the present invention, an extended connection device of the present invention, capable of achieving the aforementioned and other objects and advantages, includes:

[0012] A transfer platform, suitable for connection to a ship's hull; and

[0013] At least one extendable ramp is provided on the side of the transfer platform, and the extendable ramp is movably provided at the end of the transfer platform. It can be driven to switch between an extended position and a retracted position. When the extendable ramp is in the extended position, the extendable connection device is in a connection operation state, wherein the extendable ramp extends and protrudes outward from one side of the transfer platform. When the extendable ramp is in the retracted position, the extendable connection device is in a platform retracted state, and the extendable ramp is rotated to be above the transfer platform.

[0014] According to one embodiment of the present invention, it further includes at least one drive component, wherein the drive component is disposed on the transfer platform and connected to the extension ramp, and the drive component is capable of driving the extension ramp to move between the unfolded position and the stowed position.

[0015] According to one embodiment of the present invention, the drive assembly further includes a cable mechanism and a hydraulic winch for driving the cable mechanism, wherein the cable mechanism is disposed on the upper outer side of the transfer platform.

[0016] According to one embodiment of the present invention, the cable mechanism is a wire rope pulley block mechanism.

[0017] According to one embodiment of the present invention, it further includes at least one support mechanism, wherein the support mechanism is disposed on the transfer platform and connected to the extension ramp, the support mechanism being used to support the extension ramp in a specific position to maintain a specific posture.

[0018] According to one embodiment of the present invention, the cable mechanism includes a distal cable and a proximal cable, wherein the distal cable and the proximal cable are respectively connected to the extension ramp. One end of the distal cable is connected to the distal end of the extension ramp, and the proximal cable is connected to the proximal end of the extension ramp.

[0019] According to one embodiment of the present invention, the surfaces of the transfer platform and the extended ramp are provided with anti-slip strips, wherein the anti-slip strips are made of a steel-aluminum composite material, with the upper surface being steel to improve the hardness of the anti-slip strips and the lower layer being aluminum.

[0020] According to one embodiment of the invention, it further includes at least one buoyancy mechanism, wherein the buoyancy mechanism is disposed below the transfer platform and the extension ramp.

[0021] According to one embodiment of the present invention, the floating body mechanism further includes at least one platform floating body and at least one ramp floating body, wherein the platform floating body is disposed below the transfer platform and connected to the transfer platform for supporting the transfer platform; the ramp floating body is disposed below the extended ramp for supporting the extended ramp.

[0022] According to one embodiment of the present invention, the platform float and the ramp float of the floating body mechanism are inflatable flexible floating body devices.

[0023] According to one embodiment of the present invention, the platform body of the transfer platform further includes a horizontal platform and at least one ramp extending outward from the horizontal platform, wherein the extension ramp of the extension connection device is disposed outside the ramp of the transfer platform and is interconnected with the transfer platform by a connecting mechanism such as a hinge.

[0024] The further objects and advantages of the invention will become fully apparent from the following description and accompanying drawings.

[0025] These and other objects, features and advantages of the present invention will become fully apparent from the following detailed description and accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the plan structure of a transfer ship according to a first preferred embodiment of the present invention.

[0027] Figure 2A This is a cross-sectional view of the tail straight ramp transfer platform of the extended connecting device according to the first preferred embodiment of the present invention in the connecting operation state.

[0028] Figure 2BThis is a cross-sectional view of the tail straight jump platform transfer platform of the extended connecting device according to the first preferred embodiment of the present invention in the platform retracted state.

[0029] Figure 2C This is a cross-sectional view of the tail-end straight-board transfer platform of the extended docking device according to the first preferred embodiment of the present invention in the platform navigation state.

[0030] Figure 3 This is a longitudinal section of the tail straight ramp and inclined ramp transfer platform of the extended connecting device according to the first preferred embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the passageway inside the transfer ship according to the first preferred embodiment of the present invention.

[0032] Figure 5 This is a side view of the extension connection device according to the first preferred embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the extension and connection device according to the first preferred embodiment of the present invention. Detailed Implementation

[0034] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0035] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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 invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0036] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0037] Refer to the accompanying drawings in this application specification. Figures 1 to 4As shown, an extended docking device and a transshipment vessel according to a first preferred embodiment of this application are described below. The extended docking device is a dedicated interface for civilian roll-on / roll-off (Ro-Ro) ships and transshipment vessels, applicable to Ro-Ro ships / passenger Ro-Ro ships / vehicle Ro-Ro ships. The transshipment vessel includes a hull 10 and at least one extended docking device 20 disposed on one side of the hull 10 and connected to the hull 10, wherein the extended docking device 20 can dock with Ro-Ro ships or other types of vessels to facilitate docking and transshipment of cargo between the transshipment vessel and the Ro-Ro ship.

[0038] In this preferred embodiment of the present application, the at least one extended docking device 20 is disposed at the end of the hull 10 and is movably connected to the hull 10. The extended docking device 20 includes a transfer platform 21 and at least one extended ramp 22 disposed on the transfer platform 21, wherein the extended ramp 22 is disposed on the side of the transfer platform 21 and connected to the transfer platform 21, and the extended ramp 22 is movably disposed at the end of the transfer platform 21 for docking with the stern ramp (straight ramp or inclined ramp) of the roll-on / roll-off ship.

[0039] It is understood that in this preferred embodiment of the present application, the extended ramp 22 is movably disposed on one side of the transfer platform 21, and can be driven to switch between an extended position and a retracted position; when the extended ramp 22 is in the extended position, the extended docking device 20 is in docking operation state, wherein the extended ramp 22 extends and protrudes outward from one side of the transfer platform 21, and can dock with the stern ramp of the roll-on / roll-off ship; when the extended ramp 22 is in the retracted position, the extended docking device 20 is in the platform retracted state, and the extended ramp 22 is rotated to above the transfer platform 21, that is, the extended ramp 22 is retracted, so as to facilitate movement and save space.

[0040] It is worth mentioning that when the transfer vessel is moving or transporting, the extended ramp 22 can be fixed to the transfer platform 21, at which time the extended docking device 20 of the transfer vessel is in a sailing state.

[0041] In other words, the extension ramp 22 of the extension connection device 20 is pivotally mounted at the end of the transfer platform 21, and can be driven to switch between the unfolded position and the retracted position. When the transfer vessel is sailing, the extension ramp 22 of the extension connection device 20 can be fixed at a specific position on the transfer platform 21.

[0042] As an example, in this preferred embodiment of the present application, the extension ramp 22 of the extension connection device 20 is connected to the transfer platform 21 by a hinge.

[0043] The extended connection device 20 further includes at least one drive component 23 and at least one support mechanism 24, wherein the drive component 23 and the support mechanism 24 are disposed on the transfer platform 21 and connected to the extended ramp 22. The drive component 23 can drive the extended ramp 22 to move between the unfolded position and the retracted position, and the support mechanism 24 is used to support the extended ramp 22 in a specific position to maintain a specific posture.

[0044] The drive assembly 23 further includes a cable mechanism 231 and a hydraulic winch 232 that drives the cable mechanism 231. The cable mechanism 231 is located on the upper outer side of the transfer platform 21 and is a wire rope pulley mechanism, i.e., the cable mechanism 231 is the retraction and deployment operation device of the extension connection device 20, and is driven by the hydraulic winch 232. The support mechanism 24 is located on the inner side of the transfer platform 21, and its other end is connected to the extension ramp 22 to support the extension ramp 22.

[0045] The cable mechanism 231 includes a distal cable 2311 and a proximal cable 2312, wherein the distal cable 2311 and the proximal cable 2312 are respectively connected to the extension ramp 22. One end of the distal cable 2311 is connected to the distal end of the extension ramp 22, and the proximal cable 2312 is connected to the proximal end of the extension ramp 22. When the extension ramp 22 is driven to move, the hydraulic winch 232 pulls the extension ramp 22 to move through the distal cable 2311 and the proximal cable 2312.

[0046] The distal cable 2311, the proximal cable 2312, and the extension ramp 22 of the cable mechanism 231 form a quadrilateral structure. When the cable mechanism 231 pulls the extension ramp 22 from the unfolded position to the retracted position, the support mechanism 24 supports the extension ramp 22 and keeps the extension ramp 22 in the current retracted position.

[0047] It should be noted that, in this preferred embodiment of the application, the transfer platform 21 is the basic platform for vehicles to move from the roll-on / roll-off ship to the transfer ship, providing the turning radius and climbing distance required for vehicle turning. To reduce the weight of the platform, the shape of the transfer platform 21 has been modified, and the parts that vehicles will not pass through have been reduced in weight. Specifically, the transfer platform 21 is pistol-shaped.

[0048] The upper surface of the extended docking device 20 is 3.5 meters above the water surface. After vehicles board the ship from the side, they climb to the 9-meter deck position via the extended ramp 22. The transfer platform 21 needs to provide space for vehicles to turn within a radius of no less than 10 meters. To reduce costs and equipment weight, the extended ramp 22 is a fixed ramp with an angle of 8-13 degrees, used for connecting to the ramps of roll-on / roll-off vessels.

[0049] The transfer platform 21 of the extended connection device 20 is constructed of high-strength metal materials (such as high-strength aluminum alloy or steel). The surfaces of the transfer platform 21 and the extended ramp 22 are provided with anti-slip strips, which are steel-aluminum composite materials. The upper surface is steel to improve the hardness of the anti-slip strips, and the lower layer is aluminum. The anti-slip strips are welded to the aluminum alloy transfer platform by explosive welding.

[0050] It is worth mentioning that, in this preferred embodiment of the present application, the cable mechanism 231 is installed on the upper outer side of the transfer platform 21. The cable mechanism 231 is a wire rope pulley system and also serves as the platform's deployment and retraction device, driven by the hydraulic winch 23. When the extension ramp 22 is opened to a horizontal position, the support mechanism 24, located inside the transfer platform 21, is in place, fixing the extension ramp in a horizontal position. In short, in this preferred embodiment of the present application, the transfer platform 21 and the extension ramp 22 of the extension connection device 20 form a support structure system with outer cables and inner connecting rods.

[0051] The system can operate automatically without manual intervention. After the transshipment operation is completed, the hydraulic winch 23 drives the steel cable mechanism 231 to retract the extended ramp 22, and the support mechanism 24 automatically retracts into place. This achieves the unification of the support and drive devices, which can be operated automatically without manual intervention, thus avoiding the risks of manual operations at sea.

[0052] The extended docking device 20 further includes at least one floating mechanism 25, wherein the floating mechanism 25 is disposed below the transfer platform 21 and the extended ramp 22, has a low density and can float on the water surface, and is used to support the transfer platform 21 and the extended ramp 22 of the extended docking device 20.

[0053] The floating body mechanism 25 further includes at least one platform floating body 251 and at least one ramp floating body 252, wherein the platform floating body 251 is disposed below the transfer platform 251 and connected to the transfer platform 21 to support the transfer platform 21; the ramp floating body 252 is disposed below the extension ramp 22 to support the extension ramp 22, thereby reducing the pressure on the steel cable and support mechanism during the operation of the extension connection device 20.

[0054] Preferably, in this preferred embodiment of the present application, the ramp float 252 of the float mechanism 25 is located at the far end of the extended ramp 22, that is, at the end away from the transfer platform 21, which can further enhance the pressure that the extended connection device 20 can withstand.

[0055] Preferably, in this preferred embodiment of the present application, the platform float 251 and the ramp float 252 of the floating body mechanism 25 are implemented as semi-submersible floating piers, wherein the semi-submersible floating piers 252 can float on the water surface when wading, thereby providing support for the goose formation docking device 20.

[0056] It is worth mentioning that, in this preferred embodiment of the application, the platform float 251 and the ramp float 252 of the float mechanism 25 are inflatable flexible float devices, and the flexible attachment support structure is in the form of a small waterline to reduce the impact of waves on the platform. The flexible float is equipped with an operable device for deploying and retracting the flexible float during navigation.

[0057] It is understood that in this preferred embodiment of the present application, the floating mechanism 25 is located at the far end of the extension ramp 22, which can reduce the force borne by the gantry and improve the stability of the extension connection device 20 structure. Since the floating mechanism 25 is an inflatable flexible floating device, the buoyancy of the floating mechanism 25 can be adjusted according to the load, which can minimize the pressure on the gantry and minimize the impact of waves on the platform.

[0058] It should be noted that the far end of the extended ramp 22, that is, the section farther from the transfer platform 21, can mitigate the impact of waves when waves strike the extended ramp 22, thanks to the floating mechanism 25 located at the far end of the extended ramp 22, which helps protect the extended docking device 20. It is worth mentioning that the floating mechanism 25 adopts a small waterplane area flexible float structure, which can effectively reduce the stress on the hull of the transfer platform 22 while minimizing the impact of waves on the platform.

[0059] It should be noted that in this preferred embodiment of the present application, the extension ramp 22 of the extension connection device 20 is a fixed ramp, which can effectively adapt to various roll-on / roll-off ships up to 10,000 tons and has strong adaptability.

[0060] The extension ramp 22 of the extension connection device 20 can be rotated 90 degrees by the wire rope pulley block driven by the hydraulic winch 232, which is simple to operate. The extension and connection device 20 is composed of a launch and take-up system and a support system, which are combined with each other. The system can be operated fully automatically, which reduces the difficulty and danger of offshore operations and greatly improves the efficiency of offshore operations.

[0061] The transfer platform 21 of the extended connection device 20 is provided with at least one transfer interface 210, wherein the extended ramp 22 is pivotally disposed on the transfer interface 210 of the transfer platform 21, and when the extended ramp 22 is in the extended state, it protrudes and extends outward from the transfer interface 210 of the transfer platform 21.

[0062] In this preferred embodiment of the present application, one side of the transfer platform 21 is connected to the hull 10, and the transfer interface 210 of the transfer platform 21 is formed on the opposite or adjacent side of the hull 10. The transfer interface 210 of the extended docking device 20 includes a bow transfer interface, a stern transfer interface, and a side transfer interface, wherein the bow transfer interface, the stern transfer interface, and the side transfer interface can connect to different types of roll-on / roll-off ship interfaces, thereby improving the applicability of the extended docking device 20.

[0063] The transfer platform 21 includes a platform body 211 and a vehicle channel 212 set on the platform body 211. The vehicle channel 212 is set at the upper end of the platform body 211 and is provided with anti-slip strips to prevent vehicles from slipping during driving.

[0064] like Figures 2A to 2C As shown, the extended ramp 22 is traction-driven by the cable mechanism 231 of the drive assembly 23, switching between the docking operation state, the platform retracted state, and the platform sailing state. When the extended ramp 22 is in the deployed state, the hydraulic winch 232 of the drive assembly 23 releases the distal cable 2311 and the proximal cable 2312, allowing the extended ramp 22 to be maintained at a specific height on the horizontal plane under the traction and support of the cable mechanism 231. It is understood that a platform float 251 is located below the distal end of the extended ramp 22, providing buoyancy support for the extended ramp 22. The support mechanism 24 is supported between the transfer platform 21 and the extended ramp 22, further securing and supporting the extended ramp 22.

[0065] When the extension ramp 22 is in the retracted state of the platform, the hydraulic winch 232 of the drive assembly 23 retracts the distal steel cable 2311 and the proximal steel cable 2312, wherein the distal steel cable 2311 and the proximal steel cable 2312 of the drive assembly 23 are in a traction state, and the extension ramp 22 and the platform float 251 below it are pulled away from the water surface by the steel cable mechanism 231.

[0066] When the extended ramp 22 is in the platform's sailing state, it is pulled above the transfer platform 21 by the drive assembly 23 and fixed by the support mechanism 24. At this time, the steel cable mechanism 231 of the drive assembly 23 is in a relaxed state, i.e., it is not under stress. It can be understood that when the extended ramp 22 is in the sailing state, it is fixed to one side of the transfer platform 21, and the extended ramp 22 is above the water surface to reduce the water resistance received by the extended connection device 20.

[0067] The extended ramp 22 includes a proximal ramp 221 and a distal ramp 222 integral with the proximal ramp 221. The proximal ramp 221 is connected to the transfer platform 21. A platform float 251 is disposed below the distal ramp 222, supporting the extended ramp 22 when floating. The extended ramp 22 further includes a connecting support 223, which is disposed at the distal ramp 221. The distal cable 2311 of the cable mechanism 231 is connected to the connecting support of the extended ramp 22.

[0068] It is worth mentioning that, in this preferred embodiment of the present application, the connecting support 223 protrudes from the distal end 221 of the extended ramp, and is disposed opposite to the platform float 251 below. The distal end 221 of the extended ramp 22 has a horizontal plate-like structure, and the proximal end of the extended ramp 22 has a ramp structure with a slope.

[0069] In this preferred embodiment of the present application, the extension ramp 22 of the extended docking device 20 can be implemented as a docking stern straight ramp or an inclined ramp. Therefore, in this preferred embodiment of the present application, the extension ramp 22 includes a straight ramp ramp 22a and an inclined ramp ramp 22b, wherein the straight ramp ramp 22a of the extension ramp 22 is adapted to dock with the straight ramp of a roll-on / roll-off vessel, and the inclined ramp ramp 22b is adapted to dock with the inclined ramp of the roll-on / roll-off vessel. It is worth noting that the type and number of the extension ramps 22 are merely exemplary and not limiting.

[0070] like Figure 4 As shown, the platform body 211 of the transfer platform 21 further includes a horizontal platform 2111 and at least one ramp 2112 extending outward from the horizontal platform 2111. The extension ramp 22 of the extension connection device 20 is disposed outside the ramp 2112 of the transfer platform 21 and is interconnected with the transfer platform 21 by a connecting mechanism such as a hinge.

[0071] like Figure 5 and Figure 6 As shown in this preferred embodiment of the application, during the transfer operation, the ramp or straight ramp of the roll-on / roll-off ship can be mounted above the extended ramp 22 of the extended transfer device 20. The vehicle can travel directly from the ramp or straight ramp of the roll-on / roll-off ship to the extended ramp 22 and enter the transfer platform 21 from the extended ramp 22.

[0072] Understandably, due to the factors of the extended docking device 20 itself and its load, and considering the extremely large lever arm, the forces on the extended docking device 20 will ultimately be transmitted to the hull 10. Because of the transverse mooring requirements, the extended docking device 20 is positioned at the stern of the hull 10.

[0073] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and any variations or modifications may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. An extension connection device, characterized in that, include: A transfer platform, suitable for connection to the hull of a transfer vessel; and At least one extended ramp for docking with the gangway of a roll-on / roll-off ship, wherein the at least one extended ramp is provided on the side of the transfer platform and is movably provided at the end of the transfer platform, and is drivably switchable between an extended position and a retracted position. When the extended ramp is in the unfolded position, the extended connecting device is in the connecting operation state, wherein the extended ramp extends and protrudes outward from one side of the transfer platform; when the extended ramp is in the retracted position, the extended connecting device is in the platform retracted state, and the extended ramp is rotated to the top of the transfer platform. At least one float mechanism, the float mechanism including at least one ramp float disposed below the extended ramp, which is used to support the extended ramp.

2. The extension connection device according to claim 1, further comprising at least one drive component, wherein the drive component is disposed on the transfer platform and connected to the extension ramp, and the drive component is capable of driving the extension ramp to move between the unfolded position and the retracted position.

3. The extension connection device according to claim 2, wherein the drive assembly further includes a cable mechanism and a hydraulic winch for driving the cable mechanism, wherein the cable mechanism is disposed on the upper outer side of the transfer platform.

4. The extension connection device according to claim 3, wherein the steel cable mechanism is a wire rope pulley block mechanism.

5. The extended connection device according to claim 3 further includes at least one support mechanism, wherein the support mechanism is disposed on the transfer platform and connected to the extended ramp, and the support mechanism is used to support the extended ramp in a specific position to maintain a specific posture.

6. The extension connection device according to claim 5, wherein the cable mechanism includes a distal cable and a proximal cable, wherein the distal cable and the proximal cable are respectively connected to the extension ramp, one end of the distal cable is connected to the distal end of the extension ramp, and the proximal cable is connected to the proximal end of the extension ramp.

7. The extended connection device according to claim 5, wherein the surfaces of the transfer platform and the extended ramp are provided with anti-slip strips, wherein the anti-slip strips are made of a steel-aluminum composite material, with the upper surface being steel to improve the hardness of the anti-slip strips and the lower layer being aluminum.

8. The extension docking device according to claim 7, wherein the floating body mechanism further includes at least one platform float, wherein the platform float is disposed below the transfer platform and connected to the transfer platform for supporting the transfer platform.

9. The extension connection device according to claim 8, wherein the platform float and the ramp float of the floating body mechanism are inflatable flexible floating body devices.

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