Accommodation ladder for offshore connection

Abstract

The invention discloses a gangway ladder for offshore connection. The gangway ladder comprises a rigid transition part, two air bag crawling ladders and two air guide structures. The rigid transition part is provided with a walking channel for people to pass through; the two air bag crawling ladders are connected to the rigid transition part, the connecting positions of the two air bag crawling ladders and the rigid transition part are located at the two ends of the walking channel respectively, and each air bag crawling ladder is provided with a fixed end used for being installed at the connecting position and has an inflated state after being inflated and a flexible state after being deflated; the two air guide structures are installed on the two air bag crawling ladders correspondingly, and each air guide structure is used for driving the corresponding air bag crawling ladder to be switched between the inflation state and the flexible state. According to the scheme, in the passing process of personnel, one of the two air bag crawling ladders is in a relatively rigid inflation state, and the other air bag crawling ladder is in a flexible state, so that displacement generated when a ship fluctuates and shakes along with the sea surface is effectively compensated, and the gangway ladder is prevented from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of gangways for docking, and in particular to a gangway for docking at sea. Background Art

[0002] When tourists or crew members need to board another ship or an offshore platform from one ship at sea, a gangway is usually set up at two docking points for the tourists or crew members to pass through.

[0003] Publication number CN101665142A discloses a gangway ladder, which includes a ladder beam and a ladder plate. When in use, the two ends of the ladder beam are respectively fixed to two connecting points, and each ladder plate is parallel to each other. The two sides of the front end surface of the ladder plate are connected to the ladder beam axis. When the angle between the ladder beam and the plane where the connecting point is located changes, the distance from the center of the circle to the arc-shaped support point at the lower end of the ladder beam remains unchanged, so that the ladder plate is always parallel to the ground plane.

[0004] However, when using the gangway ladder in this patent, the two ends of the ladder beam need to be fixed at two joints, which can easily cause the ship to shake when the sea surface is wavy. The gangway ladder in this patent is a rigid structure, which can easily cause damage to the gangway ladder. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a gangway for offshore docking, which solves the technical problem that in the prior art, the two ends of the ladder beam need to be fixed at two docking points, which easily causes the ship to shake when the sea surface is wavy, and the gangway in the patent is a rigid structure, which easily causes the gangway to be damaged and poses a safety threat.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides a gangway for offshore docking, comprising: A rigid transition portion having a walking passage for personnel to pass through; Two airbag ladders, each connected to the rigid transition portion, with the connection points with the rigid transition portion located at both ends of the walking passage, each airbag ladder having a fixed end for installation at the connection point and having an inflated state after inflation and a flexible state after deflation; and Two air guide structures are respectively installed on the two air bag ladders. Each air guide structure is used to drive the corresponding air bag ladder to switch between the inflated state and the flexible state, and can maintain the air bag ladder in the inflated state.

[0007] In some embodiments, the air-guiding structure includes an inflation mechanism, the air outlet end of the inflation mechanism is connected to the interior of the corresponding airbag ladder, and the air inlet end is located outside the airbag ladder, wherein the inflation mechanism is used to inflate gas, and can inflate gas into the airbag ladder, and can discharge gas from the airbag ladder.

[0008] In some embodiments, the airbag ladder is provided with an air guide port connecting the interior thereof with the outside; The air guide structure further includes a control valve, and the air supply end of the inflation mechanism is connected to the air guide port via the control valve. The control valve can connect the air supply end and the air guide port, and can disconnect the air supply end and the air guide port.

[0009] In some embodiments, the control valve includes a three-way valve, one port of the three-way valve is an air vent, and the other two ports are connected to the air supply end and the air guide port respectively, wherein the air vent is used to connect to the outside world.

[0010] In some embodiments, the air guide structure further includes an air volume sensor, which is disposed at the air guide port and is used to monitor the wind speed and air volume at the air guide port.

[0011] In some embodiments, the airbag ladder has a passage, which extends along the arrangement direction of the two airbag ladders and is connected to the open end of the walking channel.

[0012] In some embodiments, the gangway ladder for docking at sea also includes a cartilage connecting rope, the two ends of the cartilage connecting rope are respectively connected to the two fixed ends, and the middle part is connected to the rigid transition part, and its length is greater than the sum of the lengths of the rigid transition part and the two airbag ladders.

[0013] In some embodiments, the gangway for docking at sea further comprises an adjustment platform and a driving unit, wherein one end of the adjustment platform is rotatably mounted on the docking location and adjusts its angle with the plane where the docking location is located during rotation; the driving unit is mounted on the docking location and connected to the adjustment platform to drive the adjustment platform to rotate; The fixed end is fixed to the adjustment platform and is installed at the connection point via the adjustment platform.

[0014] In some embodiments, the driving unit includes a hydraulic cylinder, and both ends of the hydraulic cylinder are rotatably connected to the adjustment platform and the connection point respectively.

[0015] In some embodiments, the rigid transition portion includes a base frame and two side frames, wherein the two side frames are installed at intervals on the same side of the base frame and enclose the base frame to form the walking channel; The two airbag ladders are respectively connected to the base frame and the side frame.

[0016] Compared to the existing technology, the present invention's gangway ladder for offshore docking begins by first installing the fixed ends of two airbag ladders at two docking points. For ease of description, the two docking points are illustrated using an offshore platform and a ship as an example. When a person needs to board the ship from the offshore platform, the airbag ladder connecting to the offshore platform is first inflated via the corresponding air guide structure, switching the airbag ladder to the offshore platform to an inflated state, while the airbag ladder connecting to the ship is switched to a flexible state. The person then moves via the airbag ladder connecting to the offshore platform to the rigid transition section and remains in the walking path of the rigid transition section.

[0017] The airbag ladder connecting to the offshore platform is then deflated to a flexible state, while the airbag ladder connecting to the ship is simultaneously inflated to its inflated state. At this point, personnel board the ship via the rigid transition section and the airbag ladder connecting to the ship. This allows one of the two airbag ladders to remain in a relatively rigid, inflated state while the other remains in a flexible state, effectively compensating for the ship's oscillations and preventing damage to the gangway. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of a gangway for offshore docking provided by an embodiment of the present invention, with the left airbag ladder in a flexible state and the right airbag ladder in an inflated state; Figure 2 yes Figure 1 Schematic diagram of a gangway for offshore docking with the left airbag ladder inflated and the right airbag ladder in a flexible state; Figure 3 yes Figure 1 Schematic diagram of the gangway used for offshore docking when both airbag ladders are inflated; Figure 4 yes Figure 1 A partial schematic diagram of the gangway used for offshore docking.

[0019] Description of reference numerals: 1. Rigid transition part; 11. Base frame; 12. Side frame; 2. Airbag ladder; 21. Fixed end; 3. Air guide structure; 4. Cartilage connecting rope; 5. Adjustment platform; 6. Drive part; 7. Fixed platform; 8. Connection point. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] In order to solve the technical problem in the prior art that the two ends of the ladder beam need to be fixed at two connecting points, which easily causes the ship to shake when the sea surface is wavy, and the gangway in the patent is a rigid structure, which easily causes the gangway to be damaged, the present invention provides a gangway for docking at sea. During the passage of personnel, one of the two airbag ladders is in a relatively rigid inflated state, and the other is in a flexible state, thereby effectively compensating for the shaking of the ship caused by the ups and downs of the sea surface and avoiding damage to the gangway.

[0022] See also Figure 1 and Figure 2 , Figure 1 and Figure 2 This is a schematic structural diagram of a gangway for docking at sea according to one embodiment of the present invention. The gangway comprises a rigid transition portion 1, two airbag ladders 2, and two air guide structures 3. The rigid transition portion 1 has a walking passage for personnel to pass through. The two airbag ladders 2 are connected to the rigid transition portion 1, and the connection points with the rigid transition portion 1 are located at the two ends of the walking passage. Each airbag ladder 2 has a fixed end 21 for mounting at the docking point 8 and has an inflated state after inflation and a flexible state after deflation. The two air guide structures 3 are respectively mounted on the two airbag ladders 2, and each air guide structure 3 is used to drive the corresponding airbag ladder 2 to switch between the inflated state and the flexible state. Specifically, the walking passage is open at both ends, and the airbag ladders 2 are connected to the open ends of the walking passage.

[0023] When using the gangway for offshore docking provided by the present invention, the fixed ends 21 of the two airbag ladders 2 are first installed at the two docking points 8, respectively. For ease of description, the two docking points 8 are illustrated using an offshore platform and a ship as an example. When a person needs to board the ship from the offshore platform, the airbag ladder 2 connected to the offshore platform is first inflated through the corresponding air guide structure 3, switching the airbag ladder 2 to the inflated state, and switching the airbag ladder 2 connected to the ship to the flexible state. The person then moves via the airbag ladder 2 connected to the offshore platform to the rigid transition section 1 and stays in the walking path of the rigid transition section 1.

[0024] The airbag ladder 2 connected to the offshore platform is then deflated to a flexible state, and the airbag ladder 2 connected to the ship is simultaneously inflated to an inflated state. At this point, personnel board the ship via the rigid transition section 1 and the airbag ladder 2 connected to the ship. This allows one of the two airbag ladders 2 to remain in a relatively rigid, inflated state while the other remains in a flexible state, effectively compensating for the ship's oscillations caused by the heaving of the sea surface and preventing damage to the gangway.

[0025] It should be noted that after switching the airbag ladder 2 to the inflated state or the flexible state, the air guide structure 3 is capable of maintaining the airbag ladder 2 in the inflated or flexible state. Furthermore, in one embodiment, the air guide structure 3 is a sealing plug provided on the airbag ladder 2. To switch to the inflated state, the sealing plug is opened, and air is blown into the airbag ladder 2 through the holes in the sealing plug using a blower. Once the airbag ladder 2 reaches a predetermined level, the sealing plug is then closed. To switch to the flexible state, the sealing plug only needs to be opened.

[0026] Furthermore, it should be understood that when the sea is calm, the vessel does not rock, see Figure 3 At this time, the two airbag ladders 2 can be switched to the inflated state at the same time to improve the efficiency of personnel passage.

[0027] In another embodiment, the gas guide structure 3 is configured as a gas generator and a sealing plug, the gas is directly generated in the airbag ladder 2 by the gas generator, and the corresponding holes are opened and closed by the sealing plug.

[0028] In another embodiment, the air-guiding structure 3 includes an inflation mechanism, the air outlet end of the inflation mechanism is connected to the interior of the corresponding airbag ladder 2, and the air inlet end thereof is located outside the airbag ladder 2, wherein the inflation mechanism is used to inflate gas, and can inflate gas into the airbag ladder 2 and discharge gas from the airbag ladder 2.

[0029] In this embodiment, the inflation mechanism is always connected to the interior of the airbag ladder 2. When it is necessary to maintain the airbag ladder 2 in an inflated state, the inflation mechanism is controlled to continuously pump air into the interior of the airbag ladder 2. When it is necessary to switch the airbag ladder 2 to a flexible state, the inflation mechanism can be controlled to operate in reverse, or the inflation mechanism can be shut down to allow natural air dissipation through the inflation mechanism's air duct. It should be noted that the inflation mechanism can be an air pump, blower, or air compressor. In this embodiment, the inflation mechanism is an air pump.

[0030] In one embodiment, the airbag ladder 2 is provided with an air guide port connecting the interior thereof with the outside world; the air guide structure 3 also includes a control valve, and the air supply end of the inflation mechanism is connected to the air guide port via the control valve. The control valve can connect the air supply end and the air guide port, and can disconnect the air supply end and the air guide port.

[0031] In this embodiment, when the air inputted into the airbag ladder 2 by the inflation mechanism reaches a preset amount, the air guide port is closed by the control valve, and the inflation mechanism is shut down at this time, thereby preventing the inflation mechanism from continuously operating and saving energy. It should be noted that in this solution, the control valve is a solenoid valve.

[0032] In one embodiment, the control valve includes a three-way valve, one port of the three-way valve is an air release port, and the other two ports are respectively connected to the air supply end and the air guide port, wherein the air release port is used to connect to the outside world.

[0033] In this embodiment, when air needs to be inflated in the airbag ladder 2, the three-way valve is controlled to connect the air supply end of the inflation mechanism with the air guide port, facilitating inflation through the inflation mechanism. When air needs to be deflated, the three-way valve is simply controlled to connect the air guide port with the deflation port, improving deflation efficiency. It should be understood that the specific structure and principles of the three-way valve are prior art and will not be elaborated upon here.

[0034] In one embodiment, the air guide structure 3 further includes an air volume sensor, which is disposed at the air guide port and is used to monitor the wind speed and air volume at the air guide port.

[0035] In this embodiment, the wind speed and air volume at the air guide port can be monitored in real time by an air volume sensor. This ensures effective inflation of the inflation mechanism and prevents accidental air leakage from the air guide port, thereby improving stability. Specifically, in this solution, air volume sensors are also provided at the air supply end and the air leakage port.

[0036] In one embodiment, the airbag ladder 2 has a passage, which extends along the arrangement direction of the two airbag ladders 2 and is connected to the open end of the walking channel.

[0037] In this embodiment, the airbag ladder 2 is surrounded by a passageway for personnel to pass through, thereby providing protection for personnel through the inner wall of the passageway and improving safety. Specifically, the side walls of the passageway in this solution are provided with ventilation holes that communicate with the interior, thereby improving the ventilation of the passageway.

[0038] In one embodiment, the gangway ladder for docking at sea also includes a cartilage connecting rope 4, the two ends of which are respectively connected to the two fixed ends 21, and the middle part of the cartilage connecting rope 4 is connected to the rigid transition part 1, and its length is greater than the sum of the lengths of the rigid transition part 1 and the two airbag ladders 2.

[0039] In this embodiment, the rigid transition part 1 is connected to the two airbag ladders 2 by a cartilage connecting rope 4, and the length of the cartilage connecting rope 4 is greater than the overall length of the rigid transition part 1 and the two airbag ladders 2, so that the cartilage connecting rope 4 plays an emergency protection role, and at the same time, the cartilage connecting rope 4 does not affect the flexible state of the airbag ladder 2 to compensate for the displacement caused by the shaking of the ship.

[0040] In one embodiment, see Figure 3 and Figure 4 The gangway for docking at sea also includes an adjusting platform 5 and a driving unit 6. One end of the adjusting platform 5 is rotatably installed at the docking point 8, and the angle between it and the plane where the docking point 8 is located is adjusted during rotation. The driving unit 6 is installed at the docking point 8 and connected to the adjusting platform 5 to drive the adjusting platform 5 to rotate; the fixed end 21 is fixed to the adjusting platform 5 and is installed at the docking point 8 via the adjusting platform 5.

[0041] In this embodiment, the pitch angle of the airbag ladder 2 is flexibly adjusted through the coordination of the adjustment platform 5 and the drive unit 6, thereby improving practicality. It should be noted that in this embodiment, the adjustment platform 5 and the drive unit 6 are provided as a set and are mounted at a low-lying connection point 8 for connection to the corresponding airbag ladder 2. Specifically, a fixed platform 7 is also provided corresponding to the adjustment platform 5. The adjustment platform 5 is rotatably mounted on the fixed platform 7, and the fixed platform 7 is fixed to the connection point 8 via bolts.

[0042] In addition, a fixed platform 7 is also provided corresponding to the other airbag ladder 2 , and its fixed end 21 is fixed to the fixed platform 7 and fixed to the connecting portion 8 via the fixed platform 7 by bolts.

[0043] It should be noted that the driving part 6 can be configured in the form of a cylinder, an electric push rod or a hydraulic cylinder.

[0044] In one embodiment, the driving unit 6 includes a hydraulic cylinder, and two ends of the hydraulic cylinder are rotatably connected to the adjustment platform 5 and the connecting portion 8 respectively.

[0045] In this embodiment, the rotation of the adjustment platform 5 is achieved by the extension and contraction of the hydraulic cylinder, and the structure is stable and reliable. Specifically, in this solution, the two ends of the hydraulic cylinder are rotatably mounted on the adjustment platform 5 and the corresponding fixed platform 7 respectively.

[0046] It should be noted that, in one embodiment, the rigid transition portion 1 is configured as a rigid plate; in another embodiment, the rigid transition portion 1 is configured as a rigid frame.

[0047] In another embodiment, the rigid transition portion 1 includes a base frame 11 and two side frames 12. The two side frames 12 are installed at intervals on the same side of the base frame 11 and enclosed with the base frame 11 to form a walking passage; two airbag ladders 2 are respectively connected to the base frame 11 and the side frames 12.

[0048] In this embodiment, a walking passage is formed by enclosing the bottom frame 11 and the two side frames 12, so that the two side frames 12 of the rigid connection frame can provide protection for personnel and improve safety.

[0049] In order to better understand the present invention, the following Figures 1 to 4 The technical solution of the present invention is described in detail: When using the gangway for offshore docking provided by the present invention, the fixed ends 21 of the two airbag ladders 2 are first fixed to two docking points 8 via two fixed platforms 7. For ease of description, the two docking points 8 are taken as an example of an offshore platform and a ship. When a person needs to board the ship from the offshore platform, the airbag ladder 2 connected to the offshore platform is first inflated using the corresponding air pump. After switching the airbag ladder 2 to the inflated state, its air guide port is closed through a control valve, and the airbag ladder 2 connected to the ship is switched to the flexible state. The person then moves via the airbag ladder 2 connected to the offshore platform to the rigid transition section 1 and stays in the walking path of the rigid transition section 1.

[0050] The airbag ladder 2 connected to the offshore platform is then deflated to a flexible state, and the airbag ladder 2 connected to the ship is simultaneously inflated to an inflated state. At this point, personnel board the ship via the rigid transition section 1 and the airbag ladder 2 connected to the ship. This allows one of the two airbag ladders 2 to remain in a relatively rigid, inflated state while the other remains in a flexible state, effectively compensating for the ship's swaying caused by the heaving of the sea surface and preventing damage to the gangway.

[0051] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A gangway for offshore docking, characterized in that: include: A rigid transition portion having a walking passage for personnel to pass through; Two airbag ladders, each connected to the rigid transition portion, with the connection points with the rigid transition portion located at both ends of the walking passage, each airbag ladder having a fixed end for installation at the connection point and having an inflated state after inflation and a flexible state after deflation; and Two air guide structures are respectively installed on the two air bag ladders, and each air guide structure is used to drive the corresponding air bag ladder to switch between the inflated state and the flexible state.

2. The gangway for offshore docking according to claim 1, characterized in that: The air-guiding structure includes an inflation mechanism, the air outlet end of the inflation mechanism is connected to the interior of the corresponding airbag ladder, and the air inlet end is located outside the airbag ladder, wherein the inflation mechanism is used to inflate gas, and can inflate gas into the airbag ladder and discharge gas from the airbag ladder.

3. The gangway for offshore docking according to claim 2, characterized in that: The air bag ladder is provided with an air guide port connecting the interior thereof with the outside; The air guide structure further includes a control valve, and the air supply end of the inflation mechanism is connected to the air guide port via the control valve. The control valve can connect the air supply end and the air guide port, and can disconnect the air supply end and the air guide port.

4. The gangway for offshore docking according to claim 3, characterized in that: The control valve includes a three-way valve, one port of the three-way valve is an air release port, and the other two ports are respectively connected to the air supply end and the air guide port, wherein the air release port is used to connect to the outside world.

5. The gangway for offshore docking according to claim 3, characterized in that: The air guide structure further includes an air volume sensor, which is disposed at the air guide port and is used to monitor the wind speed and air volume at the air guide port.

6. The gangway for offshore docking according to claim 1, characterized in that: The airbag ladder has a passage, which extends along the arrangement direction of the two airbag ladders and is connected to the open end of the walking passage.

7. The gangway for offshore docking according to claim 1, characterized in that: The gangway ladder for docking at sea also includes a cartilage connecting rope, the two ends of which are respectively connected to the two fixed ends, and the middle part of which is connected to the rigid transition part, and the length of which is greater than the sum of the lengths of the rigid transition part and the two airbag ladders.

8. The gangway for offshore docking according to claim 1, characterized in that: The gangway for docking at sea further includes an adjustment platform and a driving unit. One end of the adjustment platform is rotatably mounted on the docking location, and adjusts its angle with the plane of the docking location during rotation. The driving unit is mounted on the docking location and connected to the adjustment platform to drive the adjustment platform to rotate. The fixed end is fixed to the adjustment platform and is installed at the connection point via the adjustment platform.

9. The gangway for offshore docking according to claim 8, characterized in that: The driving part includes a hydraulic cylinder, and both ends of the hydraulic cylinder are rotatably connected to the adjustment platform and the connection point respectively.

10. The gangway for offshore docking according to claim 1, characterized in that: The rigid transition portion includes a base frame and two side frames, wherein the two side frames are installed at intervals on the same side of the base frame and enclose the base frame to form the walking channel; The two airbag ladders are respectively connected to the base frame and the side frame.

Images