Method for adapting a personnel embarkation and disembarkation system of a vertical quay to water level changes

Abstract

The application discloses a method for adapting to water level change of personnel boarding and leaving a ship on a vertical wharf system, which comprises a ship, a floating platform, a vertical lifting elevator, a wharf main structure and a shore connecting bridge, the front of the wharf main structure is inwardly recessed to form a vertical through channel, the vertical lifting elevator is installed in the vertical through channel, the floating platform is located in the vertical through channel, the ship is parked at the front of the wharf main structure and is flush with the floating platform, personnel on the ship can freely go in and out of the vertical lifting elevator through the floating platform and can freely go in and out of a wharf surface of the wharf main structure through the vertical lifting elevator, the shore connecting bridge is connected with the wharf surface of the wharf main structure and land, and a machine room is arranged at the top of the vertical lifting elevator and is provided with a control system for controlling the lifting of the vertical lifting elevator. The vertical wharf, the floating platform and the vertical lifting elevator are combined to realize convenient, fast, safe, comfortable and efficient transfer of personnel between the wharf platform and the ship.

Description

Technical Field

[0001] This invention relates to the field of dockside personnel boarding and disembarking technology. More specifically, this invention relates to a method for a vertical dockside personnel boarding and disembarking system to adapt to changes in water level. Background Technology

[0002] For seaports with small water level differences, where the difference in elevation between the ship's deck and the dock surface is minimal, simple facilities such as gangways, ramps, or boarding towers are typically used to facilitate boarding and disembarking. Some high-traffic international cruise homeports utilize mobile boarding bridges. However, for vertical docks on inland waterways with significant water level differences, multiple platforms are necessary. Passengers access the lower platform via gangways or ramps, then ascend stairs to the upper dock surface platform, and finally exit via a connecting bridge. In some inland waterway areas, water level differences can exceed 30 meters. At the lowest water level, this requires passengers to walk the equivalent of 10 flights of stairs to reach the dock surface platform, posing significant inconvenience, especially at tourist docks. Vulnerable groups such as the elderly, children, the sick, the disabled, and pregnant women may even be unable to access the dock, resulting in a poor travel experience and substantial safety risks. This is why vertical structures are not currently used at tourist docks in these areas. Summary of the Invention

[0003] One object of the present invention is to provide a method for a vertical dock personnel boarding and disembarking system to adapt to changes in water level, which combines a vertical dock, a floating platform and a vertical elevator to enable convenient, fast and safe and comfortable transfer of personnel between the dock platform and the vessel.

[0004] Another objective of this invention is to provide a design method for a vertical elevator hoisting system that can automatically adjust the length of the hoisting system's wire rope, thereby solving the problem of interference between the counterweight and the foundation pit caused by the floating platform rising due to rising water levels, and the problem of the car being unable to stop at the level position of the floating platform caused by the floating platform falling due to falling water levels.

[0005] To achieve these objectives and other advantages according to the present invention, a vertical dock personnel boarding and disembarking system based on a vertical elevator is provided, comprising a vessel, a floating platform, a vertical elevator, a main dock structure, and a landing bridge. The front edge of the main dock structure is recessed inward to form a vertical through-passage, within which the vertical elevator is installed. The floating platform is located within the vertical through-passage and floats up and down with the water surface. The vessel is moored at the front edge of the main dock structure and is flush with the floating platform. Personnel on the vessel can freely enter and exit the vertical elevator via the floating platform and freely enter and exit the dock surface of the main dock structure via the vertical elevator. The landing bridge connects the dock surface of the main dock structure to the land. A machine room is provided on the top of the vertical elevator, which contains a control system for controlling the lifting and lowering of the vertical elevator.

[0006] Preferably, the vertical elevator includes a ground foundation, positioning piles, a floating elevator shaft, a car, a top-floor elevator shaft, and a hoisting system. The ground foundation is a fixed foundation, with multiple vertical positioning piles arranged around the ground foundation, their tops extending above the dock surface and providing fixed support for the machine room. The top-floor elevator shaft is located between the dock surface and the machine room floor. The floating platform is situated between the multiple positioning piles and is slidably connected to the positioning piles to restrict the floating platform's movement to only the vertical plane. A floating elevator shaft is fixedly installed on the top surface of the floating platform, which is connected to the... All the top-floor elevator shafts are enclosed on all four sides without top or bottom surfaces. The car is located between the floating elevator shaft and the top-floor elevator shaft and is driven up and down to the floating elevator shaft and the top-floor elevator shaft by a hoisting system located in the machine room. The central axes of the car, the floating platform, the floating elevator shaft and the top-floor elevator shaft coincide. The floating elevator shaft has an elevator shaft door on the front edge side near the main structure of the wharf. The car has a car door on the front edge side near the main structure of the wharf. The top-floor elevator shaft also has an elevator shaft door on the side near the approach bridge.

[0007] Preferably, the floating platform has a recessed pit at its center, which contains a buffer and a proximity switch, and the lower end of the car descends into the pit.

[0008] Preferably, the four corners of the floating platform are slidably connected to the positioning piles via clamping devices, and multiple car guide rods are also provided between the ground foundation and the machine room floor to limit the car's swaying.

[0009] Preferably, except for the two piles on the front edge of the main structure of the wharf, the other adjacent positioning piles are provided with a transverse support structure.

[0010] Preferably, the hoisting system includes a motor, a high-speed shaft coupling, a reducer, a low-speed shaft coupling, a car drum, a drum coupling, a counterweight drum, a counterweight fixed pulley, a counterweight movable pulley, a counterweight, a counterweight drum brake, a car drum brake, a car fixed pulley, a car movable pulley, a car, a car wire rope, and a counterweight wire rope. The counterweight is used for car lifting and balancing. The motor, high-speed shaft coupling, reducer, low-speed shaft coupling, car drum, drum coupling, and counterweight drum are connected in sequence. The drum coupling is connected to the... The car drum and the counterweight drum are detachably connected. A car drum brake is correspondingly installed on the car drum, and a counterweight drum brake is correspondingly installed on the counterweight drum. The car wire rope is sequentially connected to the car drum, the car fixed pulley, and the car movable pulley. The car movable pulley is installed on the top of the car. The counterweight wire rope is sequentially connected to the counterweight drum, the counterweight fixed pulley, and the counterweight movable pulley. The counterweight movable pulley is installed on the top of the counterweight. The car wire rope and the counterweight wire rope have opposite exit directions and the same winding ratio.

[0011] Preferably, the hoisting system further includes multiple counterweight guide rods located on both sides of the counterweight to limit its swing. The counterweight guide rods are connected between the machine room floor and the ground foundation.

[0012] Preferably, the control system installed in the machine room is used to control the operation of the winch and the opening and closing of the elevator doors and car doors of the floating elevator shaft and the top floor elevator shaft. Multiple radar level gauges are evenly installed at the bottom of the dock surface and are connected to the control system signal. Leveling sensors are installed at the top of the floating elevator shaft and the bottom of the top floor elevator shaft and are connected to the control system signal.

[0013] Preferably, the method for adjusting the lengths of the car's wire rope and the counterweight wire rope to adapt to changes in water level is as follows:

[0014] When the water level rises to the set range, activate the counterweight drum brake, disengage the drum coupling, and lock the counterweight drum. Close the car drum brake, allowing the car drum to move. Start the motor to drive the car drum to rotate, winding the set length of car wire rope onto the car drum. During this process, the counterweight drum remains stationary. Then, activate the car drum brake and engage the drum coupling to reconnect the counterweight drum. The car drum and counterweight drum return to a coaxial rotation state, and the entire hoisting system returns to normal operation, completing the adjustment process. When the water level falls to the set range, follow the same steps until the motor is started. The motor drives the car drum to rotate in the opposite direction, unwinding the set length of car wire rope from the car drum. The remaining steps are the same.

[0015] Preferably, when the water level rises to a set range, the set length of wire rope that needs to be wound into the car drum is specified. Where L1 is the height difference between the bottom of the counterweight and the surface of the pit, and i is the wire rope ratio; the number of times the water level needs to be adjusted within one cycle from the design low water level h1 to the design high water level h2 is: The elevation of the wharf platform is In the formula, H2 is the elevation of the wharf platform, h2 is the design high water level, d2 is the freeboard height of the floating platform (i.e., the pit height), and d3 is the cabin height; the elevation of the ground foundation platform is... In the formula, H1 is the ground foundation elevation, h1 is the design low water level, and d1 is the draft of the floating platform.

[0016] The present invention has at least the following beneficial effects:

[0017] 1. This invention combines a vertical dock, a floating platform, and a vertical elevator to enable convenient, fast, safe, and comfortable transfer of personnel between the dock platform and the ship.

[0018] 2. This invention can adjust the length of the wire rope of the hoisting system by setting the hoisting system, which solves the problem of interference between the counterweight and the foundation pit caused by the floating platform rising due to rising water level, and the problem of the car being unable to stop at the level position of the floating platform caused by the floating platform falling due to falling water level.

[0019] 3. This invention can also calculate the winding length of the wire rope in the hoisting system when adjusting the length of the wire rope, as well as the elevation of the wharf surface and the ground foundation through theoretical design.

[0020] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the vertical dock personnel boarding and disembarking system based on a vertical elevator, according to the present invention.

[0022] Figure 2 This is a schematic diagram of the vertical elevator structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the hoisting system of the present invention;

[0024] Figure 4 This is a schematic diagram of the wire rope adjustment in the hoisting system of the present invention;

[0025] Figure 5 This is a schematic diagram illustrating the calculation of the wharf surface elevation and ground foundation elevation according to the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Ship, 2. Floating platform, 3. Vertical elevator, 4. Dock main structure, 5. Approach bridge, 6. Positioning piles, 7. Counterweight guide rod, 8. Floating elevator shaft, 9. Car, 10. Dock surface, 11. Top floor elevator shaft, 12. Hoisting system, 13. Machine room, 14. Clamping device, 15. Car guide rod, 16. Excavation pit, 17. Ground foundation, 19. Motor, 20. High-speed shaft coupling, 21. Reducer, 22. Low-speed shaft coupling, 23. Car drum, 24. Drum coupling, 25. Counterweight drum, 26. Counterweight fixed pulley, 27. Counterweight movable pulley, 28. Counterweight, 29. Counterweight drum brake, 30. Car drum brake, 31. Car fixed pulley, 32. Car movable pulley, 34. Car wire rope, 35. Counterweight wire rope. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0029] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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, they should not be construed as limitations on this invention.

[0030] like Figure 1 As shown, this invention provides a vertical dock personnel boarding and disembarking system based on a vertical elevator, including a ship 1, a floating platform 2, a vertical elevator 3, a dock main structure 4, and a shore approach bridge 5. The front edge of the dock main structure 4 is recessed inward to form a vertical through channel, in which the vertical elevator 3 is installed. The floating platform 2 is located within the vertical through channel and floats up and down with the water surface. The ship 1 is moored at the front edge of the dock main structure 4 and is flush with the floating platform 2. Personnel on the ship 1 can freely enter and exit the vertical elevator 3 through the floating platform 2, and can freely enter and exit the dock surface 10 of the dock main structure 4 through the vertical elevator 3. The shore approach bridge 5 connects the dock surface 10 of the dock main structure 4 and the land. A machine room 13 is provided on the top of the vertical elevator 3, which contains a control system for controlling the lifting and lowering of the vertical elevator 3.

[0031] In the above technical solution, the ground foundation 17 is the fixed foundation on the riverbed; the main wharf structure 4 is used for berthing and mooring of the vessel 1, and is generally a high-pile beam-slab structure with a multi-layer frame structure, equipped with multi-layer mooring and berthing facilities, adaptable to berthing and mooring operations of the vessel 1 when the water level changes. The floating platform 2 is located within the frame of the main wharf structure 4, close to the front line, floating on the water surface, and adapting to the water level changes to form a connection with the vessel 1. The elevator shaft of the vertical elevator 3 always descends to the floating platform 2, and always ascends to the wharf surface 10 of the main wharf structure 4. The wharf surface 10 platform is equipped with a shore approach bridge 5 to connect to the land on the shore. The disembarkation process is as follows: Ship 1 is moored at the front of the main pier structure 4. Personnel disembark from Ship 1 and enter the floating platform 2. Once the vertical elevator 3 is level with the floating platform 2, personnel enter the vertical elevator 3. When the vertical elevator is level with the pier surface 10 of the main pier structure 4, personnel exit the elevator and enter the pier surface 10. Finally, they leave the pier and enter land via the approach bridge 5. The boarding process is the reverse of the above process. The vertical elevator 3 is controlled stably by a control system.

[0032] In another technical solution, such as Figure 2 As shown, the vertical elevator 3 includes a ground foundation 17, positioning piles 6, a floating elevator shaft 8, a car 9, a top-floor elevator shaft 11, and a hoisting system 12. The ground foundation 17 is a fixed foundation, with multiple vertical positioning piles 6 arranged around the ground foundation. The top of these piles extends above the dock surface 10 and provides fixed support for the machine room 13. The top-floor elevator shaft 11 is located between the dock surface 10 and the machine room 13. The floating platform is situated between the multiple positioning piles 6 and is slidably connected to them to restrict its movement to only the vertical plane. A floating elevator shaft 8 is fixedly installed on the top surface of the floating platform, connecting it to the... All the top-floor elevator shafts 11 are enclosed on all four sides without top or bottom surfaces. The car 9 is located between the floating elevator shaft 8 and the top-floor elevator shaft 11 and is driven up and down by the hoisting system 12 located in the machine room 13 to move into the floating elevator shaft 8 and the top-floor elevator shaft 11. The central axes of the car 9, the floating platform, the floating elevator shaft 8 and the top-floor elevator shaft 11 coincide. The floating elevator shaft 8 is provided with an elevator door on the front edge side near the main structure 4 of the dock. The car 9 is provided with a car door on the front edge side near the main structure 4 of the dock. The top-floor elevator shaft 11 is also provided with an elevator door on the side near the approach bridge 5.

[0033] The four corners of the floating platform are slidably connected to the positioning piles 6 by clamping devices 14. Multiple car guide rods 15 are also provided between the ground foundation and the ground of the machine room 13 to limit the swing of the car 9.

[0034] Except for the two piles on the front edge of the main structure 4 of the wharf, the other adjacent positioning piles 6 are all provided with transverse support structures to strengthen the positioning piles 6.

[0035] In the above technical solution, the floating elevator shaft 8 is a four-sided enclosed, roofless structure that floats up and down with the floating platform 2. The floating platform 2, constrained by positioning piles 6, floats up and down with the rise and fall of the water level. The positioning piles 6 are located at the four corners of the floating platform 2, used to restrict the movement of the floating platform 2 within its plane and to support the top machine room 13. The four corners of the floating platform 2 are in contact with the positioning piles 6 through clamping devices 14. The positioning piles 6 are not directly connected to the main structure of the wharf 4 and do not participate in bearing the impact force of the ship 1 berthing. There are four positioning piles 6. No lateral support structure is set between the two piles on the front edge of the wharf to avoid obstructing the personnel passage between the floating platform 2 and the ship 1. The elevator car 9 is an enclosed box for vertical personnel transportation. After disembarking, passengers wait on floating platform 2. Floating elevator shaft 8 has an outer door and an upward movement button. Passengers press the button, which controls the hoisting system 12 via the control system. The elevator car 9 descends to the level of floating platform 2 and stops. Elevator car 9 has an inner door; both the inner and outer doors open simultaneously, allowing passengers to enter. Floor control buttons are located on the side of the inner door. During normal operation, the elevator directly connects floating platform 2 and the top-floor elevator shaft 11, and stops at intermediate floors. Alternatively, passengers press the top-floor button, which controls the hoisting system 12 via the control system. The elevator car 9 ascends to the level of the top-floor elevator shaft 11 and stops, with both the inner and outer doors opening simultaneously, allowing passengers to exit car 9 and enter the dock surface 10. The boarding process is the reverse of the above.

[0036] In another technical solution, a recessed elevator floating pit 16 is provided at the center of the floating platform, containing a buffer and a proximity switch. The lower end of the car 9 descends into the pit 16. The buffer is used to cushion the descent of the car 9, and the proximity switch is used to prevent the car 9 from not stopping before reaching the bottom floor, i.e., inside the pit 16. By sensing the proximity switch, the hoisting system 12 is controlled to stop, thus playing a safety role and ensuring that the elevator stops exactly at the same level as the floating platform.

[0037] In another technical solution, such as Figure 3As shown, the hoisting system 12 includes a motor 19, a high-speed shaft coupling 20, a reducer 21, a low-speed shaft coupling 22, a car drum 23, a drum coupling 24, a counterweight drum 25, a counterweight fixed pulley 26, a counterweight movable pulley 27, a counterweight 28, a counterweight drum brake 29, a car drum brake 30, a car fixed pulley 31, a car movable pulley 32, a car 9, a car wire rope 34, and a counterweight wire rope 35. The counterweight 28 is used for the lifting and balancing of the car 9. The motor 19, high-speed shaft coupling 20, reducer 21, low-speed shaft coupling 22, car drum 23, drum coupling 24, and counterweight drum 25 are connected in sequence. The drum coupling 24 is connected to the car drum 23. The car drum 23 is detachably connected to the counterweight drum 25. A car drum brake 30 is correspondingly provided on the car drum 23, and a counterweight drum brake 29 is correspondingly provided on the counterweight drum 25. The car wire rope 34 is sequentially connected to the car drum 23, the car fixed pulley 31, and the car movable pulley 32. The car movable pulley 32 is installed on the top of the car 9. The counterweight wire rope 35 is sequentially connected to the counterweight drum 25, the counterweight fixed pulley 26, and the counterweight movable pulley 27. The counterweight movable pulley 27 is installed on the top of the counterweight 28. The car wire rope 34 and the counterweight wire rope 35 have opposite output directions and the same winding ratio. The car drum 23 and the counterweight drum 25 have the same diameter and the same rotation speed.

[0038] In the above technical solution, the hoisting system 12 is located in the machine room 13 and is used to traction the car 9 and the counterweight 28 for lifting and lowering. The motor 19, reducer 21, car drum 23, and counterweight drum 25 are connected by a three-stage coupling. One end of the car wire rope 34 is fixed to the car drum 23, and after winding out, it passes over the car fixed pulley 31 and the car movable pulley 32 before being fixed. One end of the counterweight wire rope 35 is fixed to the counterweight drum 25, and after winding out, it passes over the counterweight fixed pulley 26 and the counterweight movable pulley 27 before being fixed. Except for the car movable pulley 32, the counterweight movable pulley 27, and the counterweight, all other components are installed in the top machine room 13.

[0039] When the elevator is in normal working condition, the drum coupling 24 is in the connected state, and the motor 19 drives the reducer 21, as well as the car drum 23 and the counterweight drum 25 to rotate coaxially and at the same speed. Figure 3 As shown, since the car wire rope 34 and the counterweight wire rope 35 have opposite exit directions and the same winding ratio; and the car drum 23 and the counterweight drum 25 have the same diameter and the same rotation speed, under the drive of the motor 19, the car 9 and the counterweight move vertically in opposite directions with the same speed.

[0040] In another technical solution, the hoisting system 12 also includes multiple counterweight guide rods 7, which are located on both sides of the counterweight to limit the swing of the counterweight. The counterweight guide rods 7 are connected between the ground of the machine room 13 and the ground foundation 17.

[0041] In another technical solution, the control system installed in the machine room is used to control the operation of the winch and the opening and closing of the elevator doors and car doors of the floating elevator shaft and the top floor elevator shaft. Multiple radar level gauges are evenly installed at the bottom of the dock surface and are connected to the control system signal. Leveling sensors are installed at the top of the floating elevator shaft and the bottom of the top floor elevator shaft and are connected to the control system signal.

[0042] In the above technical solution, the control system, including the control cabinet and control console, is generally located in the machine room 13 and is used to control the safe and stable operation of the elevator. A radar level gauge is installed at the bottom of the wharf surface 10 to detect the bottom position of the elevator in real time. The basic working principle of the radar level gauge is transmission-reflection-reception. The antenna of the radar level gauge transmits electromagnetic wave signals in the form of a beam. The transmitted wave is reflected on the water surface, and the reflected echo signal is still received by the antenna. After the signal is processed by the processor, the distance S between the wharf surface 10 and the water surface is obtained, where S = time × wave speed / 2. The radar level gauge signal is transmitted to the control system in the machine room. The control system program determines the length of the wire rope winding and unwinding, thereby driving the winch to perform the corresponding action, realizing the detection of the vertical height position of the floating platform under different water level conditions, and controlling the elevator to stop at the set position. To improve the measurement accuracy of the radar level gauge, four radar level gauges can be installed at the bottom of the wharf surface 10 near the pile foundation to measure S1, S2, S3, and S4 respectively, and the average value S = 1 / 4 (S1 + S2 + S3 + S4).

[0043] Leveling sensors are installed at the top of the floating elevator shaft 8 and the bottom of the top elevator shaft 11. When the elevator reaches the bottom or top floor, the leveling sensor sends a speed-changing signal to the elevator control system, and the elevator automatically decelerates to prepare for a stop. When the car 9 enters the leveling zone (i.e., a limited distance above or below the stopping floor), the leveling sensor activates, sends a leveling signal to control the car to accurately level, and automatically cancels the signal and opens the door.

[0044] In another technical solution, as the water level at the wharf rises from the design low to the design high, the floating platform 2 continuously rises. When the floating platform 2 exceeds a certain set position, the car wire rope 34 and the counterweight wire rope 35 are too long, causing the car 9 or the counterweight to potentially collide with the floating platform 2 during elevator operation. Conversely, as the water level at the wharf falls from the design high to the design low, the floating platform 2 continuously descends. When the floating platform 2 exceeds a certain set position, the car wire rope 34 and the counterweight wire rope 35 are too short, causing the counterweight to rise to its limit position while the car 9 has not yet descended to the level of the floating platform 2. This application provides a solution for adjusting the length of the wire rope to adapt to changes in water level. The specific procedure is as follows: When the water level rises to a certain range, activate the counterweight drum brake 29 to disengage the drum coupling 24, locking the counterweight drum 25 in place. Close the car drum brake 30, allowing the car drum 23 to move. Start the motor 19 to drive the car drum 23 to rotate, winding a certain length of car wire rope 34 onto the car drum 23. During this process, the counterweight drum 25 remains stationary. Then, activate the car drum brake 30, activating the drum coupling 24 to connect the counterweight drum 25. The two drums return to a coaxial rotation state, and the entire hoisting system 12 returns to normal operation, completing the entire adjustment process. When the water level drops to a certain range, following the above steps until starting the motor 19, the motor 19 should be started to drive the car drum 23 to rotate in the opposite direction, winding a certain length of car wire rope 34 off the car drum 23. The remaining steps are the same.

[0045] In another technical solution, Figure 4 The left side represents the initial state 1, with the water level at the design low water level h1. The floating platform 2 rests on the ground foundation 17 platform, and the cabin 9 is located at the lowest position, level with the deck surface of the floating platform 2. At this time, the counterweight is located near the maximum height of the top of the top stairwell. Figure 4 The right side represents initial state 2. The car 9 is at its maximum height level with the platform 10 of the dock, and the counterweight is at its lowest position. At this time, the height difference between the bottom of the counterweight and the surface of the pit 16 is L1. This means that after the floating platform 2 floats upward by L1, the counterweight may collide with the pit 16, which will affect the normal operation of the elevator. It is necessary to adjust the length of the wire rope. At this time, the water level is the limit adjustment water level. The required length of wire rope for the car drum 23 is... In the formula, i is the wire rope ratio, and the number of adjustments required within one cycle of the water level rising from the design low water level h1 to the design high water level h2 is: In engineering applications, the water level difference in a region is constant, so frequent shutdowns for adjustments should be avoided. When setting the value, the value of L1 can be increased.

[0046] Furthermore, such as Figure 5As shown, the elevation of platform 10 on the wharf surface is:

[0047]

[0048] In the formula, H2 is the elevation of platform 10 on the wharf deck, h2 is the design high water level, d2 is the freeboard height of floating platform 2, and d3 is the margin between the deck of floating platform 2 and the 10th floor of the wharf deck when the design high water level is reached, which is the height of car 9.

[0049] The elevation of the ground foundation platform 17 is:

[0050]

[0051] In the formula, H1 is the ground foundation elevation 17, h1 is the design low water level, and d1 is the draft of the floating platform 2.

[0052] The elevations of the wharf surface (10) and the ground foundation (17) platform are calculated using formulas specified in the standards. However, since an elevator has been installed in this application, the formulas in the standards cannot be applied due to the limitations of the elevator structure. Therefore, the formulas provided in this application are required for calculation.

[0053] The embodiments of the invention have been disclosed above, but they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A method for a vertical dock personnel boarding and disembarking system to adapt to water level changes, characterized in that, The boarding and disembarking system includes a vessel, a floating platform, a vertical elevator, a main wharf structure, and a landing bridge. The front edge of the main wharf structure is recessed inward to form a vertical passage, within which a vertical elevator is installed. The floating platform is located within the vertical passage and floats up and down with the water surface. The vessel is moored at the front edge of the main wharf structure and is level with the floating platform. Personnel on the vessel can freely enter and exit the vertical elevator via the floating platform and freely enter and exit the wharf deck of the main wharf structure via the vertical elevator. The landing bridge connects the wharf deck of the main wharf structure to the land. A machine room is installed on the top of the vertical elevator, which contains a control system for controlling the lifting and lowering of the vertical elevator. The vertical elevator includes a ground foundation, positioning piles, a floating elevator shaft, a car, a top-floor elevator shaft, and a hoisting system. The ground foundation is a fixed foundation, with multiple vertical positioning piles arranged around its perimeter, their tops extending above the dock surface and providing fixed support for the machine room. The top-floor elevator shaft is located between the dock surface and the machine room floor. The floating platform is situated between the positioning piles and is slidably connected to them to restrict its movement to a vertical plane. A floating elevator shaft is fixedly mounted on the top surface of the floating platform. All elevator shafts are enclosed on all four sides without top or bottom surfaces. The car is located between the floating elevator shaft and the top-floor elevator shaft and is driven up and down to the floating elevator shaft and the top-floor elevator shaft by a hoisting system located in the machine room. The central axes of the car, the floating platform, the floating elevator shaft and the top-floor elevator shaft coincide. The floating elevator shaft has an elevator shaft door on the front edge side near the main structure of the dock, the car has a car door on the front edge side near the main structure of the dock, and the top-floor elevator shaft also has an elevator shaft door on the side near the approach bridge. The floating platform has a recessed pit at its center, which contains a buffer and a proximity switch. The lower end of the car descends into the pit. The hoisting system includes a motor, a high-speed shaft coupling, a reducer, a low-speed shaft coupling, a car drum, a drum coupling, a counterweight drum, a counterweight fixed pulley, a counterweight movable pulley, a counterweight, a counterweight drum brake, a car drum brake, a car fixed pulley, a car movable pulley, a car, a car wire rope, and a counterweight wire rope. The counterweight is used for car lifting and balancing. The motor, high-speed shaft coupling, reducer, low-speed shaft coupling, car drum, drum coupling, and counterweight drum are connected in sequence. The drum coupling is connected to the car drum... The car drum and the counterweight drum are detachably connected. A car drum brake is correspondingly provided on the car drum, and a counterweight drum brake is correspondingly provided on the counterweight drum. The car wire rope is connected in sequence to the car drum, the car fixed pulley, and the car movable pulley. The car movable pulley is installed on the top of the car. The counterweight wire rope is connected in sequence to the counterweight drum, the counterweight fixed pulley, and the counterweight movable pulley. The counterweight movable pulley is installed on the top of the counterweight. The car wire rope and the counterweight wire rope have opposite exit directions and the same winding ratio. The method for adjusting the length of the car's wire rope and the counterweight wire rope to adapt to changes in water level is as follows: When the water level rises to the set range, activate the counterweight drum brake, disengage the drum coupling, and lock the counterweight drum in place. Then, close the car drum brake, allowing the car drum to move freely. Start the motor to drive the car drum to rotate, winding the set length of car wire rope onto the car drum. During this process, the counterweight drum remains stationary. Next, activate the car drum brake and engage the drum coupling to reconnect the counterweight drum. The car drum and counterweight drum return to a coaxial rotation state, and the entire hoisting system returns to normal operation, completing the adjustment process. When the water level falls to the set range, follow the same steps until the motor is started. The motor drives the car drum to rotate in the opposite direction, unwinding the set length of car wire rope from the car drum. The remaining steps are the same. When the water level rises to a set range, the set length of wire rope required to be wound into the car drum is determined. Where L1 is the height difference between the bottom of the counterweight and the surface of the pit, and i is the wire rope ratio; the number of times the water level needs to be adjusted within one cycle from the design low water level h1 to the design high water level h2 is: The elevation of the wharf platform is In the formula, H2 is the elevation of the wharf platform, h2 is the design high water level, d2 is the freeboard height of the floating platform (i.e., the pit height), and d3 is the cabin height; the elevation of the ground foundation platform is... In the formula, H1 is the ground foundation elevation, h1 is the design low water level, and d1 is the draft of the floating platform.

2. The method for adapting to water level changes in the vertical dock personnel boarding and disembarking system as described in claim 1, characterized in that, The four corners of the floating platform are slidably connected to the positioning piles via clamping devices. Multiple car guide rods are also installed between the ground foundation and the machine room floor to limit the car's swaying.

3. The method for adapting to water level changes in the vertical dock personnel boarding and disembarking system as described in claim 1, characterized in that, Except for the two piles on the front edge of the main structure of the wharf, the other adjacent positioning piles are all equipped with transverse support structures.

4. The method for adapting to water level changes in the vertical dock personnel boarding and disembarking system as described in claim 1, characterized in that, The hoisting system also includes multiple counterweight guide rods located on both sides of the counterweight to limit its swing. The counterweight guide rods are connected between the machine room floor and the ground foundation.

5. The method for adapting to water level changes in the vertical dock personnel boarding and disembarking system as described in claim 1, characterized in that, The control system installed in the machine room is used to control the operation of the winch and the opening and closing of the elevator doors and car doors of the floating elevator shaft and the top floor elevator shaft. Multiple radar level gauges are evenly installed at the bottom of the dock surface and are connected to the control system. Leveling sensors are installed at the top of the floating elevator shaft and the bottom of the top floor elevator shaft and are connected to the control system.

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