Anti-theft embarkation method of unmanned platform

Abstract

An anti-theft boarding method for an unmanned platform comprises the steps that a boarding platform, a winch drum and a rope ladder are included, a winch remote controller and a remote control device are wirelessly connected, after connection, a rope ladder lowering button is clicked, when the rope ladder is lowered to be enough for people to climb, a brake button is pressed down, related operators connect a shackle on the rope ladder with a fastening eye plate, and then the rope ladder is released. After the lower end of the rope ladder is fixed, a recovery button is clicked, when the rope ladder is fixed and tensioned between the winch and the fastening eye plate, recovery is stopped, and after checking that the state of the rope ladder is correct, a worker climbs to the boarding platform along the rope ladder and walks to the unmanned platform deck from the boarding platform, and boarding operation is completed. When maintenance personnel need to embark the unmanned platform, the winch remote controller can be used for controlling the winch, the rope ladder is lowered to a designated position, the lower end is fixed through the eye plate, the upper end is fixed through the winch brake, and a safe and reliable boarding channel is provided for boarding personnel.

Description

Technical Field

[0001] The invention belongs to the field of marine ship design and construction, and in particular relates to an anti-theft boarding method for an unmanned platform. Background Art

[0002] Unmanned platforms mainly include offshore wind power platforms, offshore boost platforms, and offshore converter platforms. In recent years, offshore wind farms have developed rapidly. In 2021, there are more than 800 offshore wind turbines in my country, and the number of unmanned platforms is huge.

[0003] Unmanned platforms need to be regularly inspected and maintained by personnel. Currently, the method for personnel to board unmanned platforms is to set up fenders and fixed steel ladders. The operating personnel take the maintenance ship, which berths on the fender of the unmanned platform, and the personnel board the unmanned platform from the fixed steel ladder to perform maintenance operations.

[0004] This unmanned platform is a relatively simple way for people to board, and it cannot prevent other people from boarding. With the increasing number of unmanned platforms along the coast of my country, the disadvantage of this method that it cannot prevent theft is becoming increasingly prominent. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an anti-theft boarding method for an unmanned platform, and the technical solution adopted is: A theft-proof boarding method for an unmanned platform, wherein a boarding platform is arranged on one side of the offshore unmanned platform, the boarding platform is supported on the outside of the unmanned platform by support rods, the bottom plate of the boarding platform is a grating plate, and fences are arranged around it, a winch is arranged on the main deck of the unmanned platform, the winch is located behind the boarding platform, a remote control device is arranged inside the winch, a rope ladder guide wheel is fixed between the winch and the boarding platform, and a fastening eye plate is arranged below the boarding platform and at the draft.

[0006] A rope ladder is wound on the winch drum. The rope ladder consists of a cable, steps and shackles. Multiple steps are fixed on the cable at equal intervals. The steps include wooden steps and steel steps. A shackle is fixed to the bottom of the cable. The rope ladder passes through the rope ladder guide wheel and the bottom plate of the boarding platform downward in sequence, and is connected to the mooring eye plate through the shackle.

[0007] First, wirelessly connect the winch remote control and the remote control device. After the connection, click the rope ladder lowering button. When the rope ladder is lowered to a point large enough for people to board the journey, press the brake button. The relevant operating personnel connect the shackle on the rope ladder to the mooring eye plate to fix the lower end of the rope ladder. When the lower end of the rope ladder is fixed, click the recovery button. When the rope ladder is fixed and tensioned between the winch and the mooring eye plate, stop recovering. After checking that the rope ladder is in correct condition, the personnel climb up the rope ladder to the embarkation platform, walk from the embarkation platform to the unmanned platform deck, and complete the embarkation operation.

[0008] The above-mentioned anti-theft boarding method for an unmanned platform further has one end of the support rod being fixed to the lower surface of the boarding platform, and the other end being fixedly connected to the side outer plate of the unmanned platform.

[0009] The above-mentioned anti-theft boarding method for an unmanned platform further has a rope ladder whose length is not less than 13 meters.

[0010] The above-mentioned anti-theft boarding method for an unmanned platform further has a winch drum diameter of 1 meter and a rope ladder guide wheel diameter of 800 mm.

[0011] The above-mentioned anti-theft boarding method for an unmanned platform further comprises a plurality of fastening eye plates, the plurality of fastening eye plates are located in the same row, and the plurality of fastening eye plates are arranged at equal intervals below the boarding platform.

[0012] The above-mentioned anti-theft boarding method for an unmanned platform further has a spacing of 500 mm between the plurality of fastening eye plates.

[0013] The beneficial effects of the present invention are: When maintenance personnel do not need to board the unmanned platform, the rope ladder is retracted by the winch to the vicinity of the unmanned platform deck, which is far away from the platform draft and can effectively prevent other unrelated personnel from boarding.

[0014] When maintenance personnel need to board the unmanned platform, the present invention allows the maintenance personnel to use the winch remote control to control the winch, lower the rope ladder to the specified position, fix the lower end through the eye plate, and fix the upper end through the winch brake, providing a safe and reliable boarding passage for the boarding personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the boarding ladder rope ladder of the present invention in a retracted state; Figure 2 It is a schematic diagram of the lowering state of the boarding ladder rope ladder of the present invention; Figure 3 It is a schematic diagram of a rope ladder; Figure 4 It is a schematic diagram of the location of the steel steps of the rope ladder; Figure 5 This is a schematic diagram of the boarding platform.

[0016] Among them: 1-rope ladder, 1-1-shackle, 1-2-cable, 1-3-steel step, 1-4-wooden step, 2-winch, 4-rope ladder guide wheel, 5-boarding platform, 5-1-support rod, 5-2-grating, 5-3-railing, 5-4-handrail, 5-5-opening, 6-lashing eye plate, 7-winch remote control, A-unmanned platform, B-unmanned platform main deck, C-unmanned platform draft, D-operation and maintenance vessel. DETAILED DESCRIPTION

[0017] The present invention will be further described in conjunction with the accompanying drawings.

[0018] An anti-theft boarding method for an unmanned platform, comprising a rope ladder, a winch, a winch remote control device, a rope ladder guide wheel, a boarding platform, a mooring eye plate and a winch remote control. When no personnel are needed to board, the rope ladder is retracted to the vicinity of the unmanned platform deck, far from the water surface, which can effectively prevent other unrelated personnel from boarding; when our personnel need to board the unmanned platform, the boarding ladder of the present invention can control the winch through the winch remote control to lower the rope ladder to the water surface, the lower end of the rope ladder is fixed by the mooring eye plate, and the upper end of the rope ladder is fixed by the winch brake, thereby providing a safe and reliable boarding passage for the boarding personnel. Figure 1 and Figure 2 shown.

[0019] The rope ladder is composed of a shackle, a cable, steel steps, and wooden steps. Figure 3 As shown. The shackle is at the bottom of the rope ladder. When the rope ladder is lowered to the designated position, the boarding personnel will connect the shackle to the mooring eye plate near the water surface to fix the lower end of the rope ladder. Then the winch is recovered to tighten the rope ladder to prevent it from swaying under the action of wind and waves, which may cause danger to the boarding personnel. The cable is made of synthetic fiber and has a density greater than that of seawater. It can withstand the erosion of the humid and high-salt environment of the ocean for a long time. Its function is to connect the shackle, steel steps and wooden steps in series to connect the various parts of the rope ladder into a whole. The length of the rope ladder should be sufficient to allow staff to board the platform at low tide. In this example, the freeboard of the unmanned platform is 8 meters and the maximum astronomical tide is 5 meters. Therefore, the effective length of the rope ladder is not less than 13 meters. The steel steps are distributed at the lower end of the rope ladder. In addition to the role of steps, they also act as counterweights to make the lowering of the rope ladder smoother; when the rope ladder is in the retracted state, the steel steps are located on the outside of the rope ladder guide wheel, such as Figure 4 The number of steel steps is determined according to the actual situation, and the gravity of the steel steps makes the rope ladder free from jamming during lowering. In the example of this patent, there are three steel steps.

[0020] The winch is the carrier of the rope ladder, and the winch drum is connected to the top of the rope ladder. The width of the drum should be greater than the width of the rope ladder step, but not too much. In this example, the drum width is 200mm greater than the width of the rope ladder step. The diameter of the winch drum must not be less than 5 times the step depth. In this example, the step depth is 200mm and the winch drum diameter is 1 meter. The winch has a retractable function to retract or lower the rope ladder; the winch has a brake function to withstand the load of people boarding. The retractable and brake functions of the winch are controlled by the winch remote control device.

[0021] The winch remote control device is installed on the winch, specifically inside the winch drum, to avoid direct contact with humid and high-salt air, rain, waves, etc. The winch remote control device can receive signals from the winch remote control and control the winch's retraction, extension and braking functions, thereby enabling boarding personnel to remotely control the winch.

[0022] The rope ladder guide wheel is located between the winch and the embarkation platform. After the rope ladder passes through the rope ladder guide wheel, the direction becomes vertical downward. The diameter of the rope ladder guide wheel is not less than four times the depth of the rope ladder step. In this example, the step depth is 200mm and the diameter of the rope ladder guide wheel is 800mm.

[0023] The embarkation platform consists of a supporting structure, grilles, railings, handrails and openings, such as Figure 5 As shown. The supporting structure is steel (angle steel, I-beam, etc.), which is hot-dip galvanized and has a corrosion allowance of 3mm to ensure that the supporting structure will not fail due to corrosion when there is no maintenance for a long time. The supporting structure is welded to the side outer plate of the unmanned platform to provide structural support for other parts of the embarkation platform. The corrosion-resistant fiberglass grille is laid on the upper part of the supporting structure, flush with the deck surface of the unmanned platform. The railing surrounds the outer circle of the grille to prevent people from falling after boarding the grille. The handrail is the position for people to hold when they board the embarkation platform, which assists people in boarding and ensures their safety. The opening is the passage for people to pass through the embarkation platform when boarding. The net size of the opening should not be less than 600mm×600mm so that people can pass smoothly.

[0024] The eye plate is welded at a suitable position near the draft of the side of the unmanned platform to connect the shackle of the rope ladder to fix the lower end of the rope ladder and prevent the rope ladder from swinging. The eye plates are installed in series with a spacing of 500mm to meet the boarding needs at different tide levels.

[0025] The winch remote control weighs about 2kg and is carried by the passengers. It can control the winch remote control device, thereby controlling the winch retraction and braking functions.

[0026] When the unmanned platform does not need people to board, the rope ladder is in a retracted state, such as Figure 1 The unmanned platform is not accessible at this time.

[0027] When the relevant operators need to board the unmanned platform, they first take the operation and maintenance ship to the unmanned platform. The relevant operators hold the winch remote control, confirm that the winch remote control and the winch remote control device are wirelessly connected, and then click the lowering button.

[0028] The winch remote control receives the lowering command and controls the winch to start lowering the rope ladder. When the rope ladder is lowered to a length sufficient for personnel to board the journey, the personnel click the stop button on the winch remote control to stop the winch. Then press the brake button to keep the lowered length of the rope ladder unchanged.

[0029] The relevant workers connected the shackle on the rope ladder to the securing eye plate to secure the lower end of the rope ladder.

[0030] When the lower end of the rope ladder is fixed, the personnel clicks the brake release button on the winch remote control, and then clicks the recycle button. The winch releases the brake and starts to recycle the rope ladder. The recycle stops when the rope ladder is tensioned, and the brake button is pressed at the same time. The winch is in the braking state. At this time, the rope ladder is fixed and tensioned between the winch and the eye plate, which limits the movement of the rope ladder to the maximum extent and provides a stable passage for personnel to board the platform. Figure 2 shown.

[0031] After checking that the rope ladder is in correct condition, the personnel climb up to the embarkation platform along the rope ladder, hold the handrail on the embarkation platform to climb onto the embarkation platform, walk from the embarkation platform to the unmanned platform deck, and complete the embarkation operation.

[0032] When the relevant operators finish their work on the unmanned platform, they walk from the unmanned platform to the embarkation platform and descend the rope ladder to the boat. Click the brake release button on the winch remote control, then click the lower button, the winch releases the brake and starts to lower the rope ladder, so that the rope ladder changes from a tensioned state to a relaxed state, and then click the stop button and the brake button. Then unhook the shackle, click the recycle button, and the winch starts to recycle the rope ladder. When the rope ladder is retracted to the initial position, stop the winch recovery and turn on the winch brake. At this time, the state returns to Figure 1 shown.

[0033] At this point the entire boarding process is completed and the personnel can leave on the operation and maintenance ship.

Claims

1. An anti-theft boarding method for an unmanned platform, characterized in that: A boarding platform is provided on one side of the offshore unmanned platform. The boarding platform is supported on the outside of the unmanned platform by support rods. The bottom plate of the boarding platform is a grid plate, and fences are provided around it. A winch is provided on the main deck of the unmanned platform. The winch is located behind the boarding platform. A remote control device is provided inside the winch. A rope ladder guide wheel is fixed between the winch and the boarding platform. A fastening eye plate is provided below the boarding platform and at the draft. A rope ladder is wound on the winch drum. The rope ladder consists of a cable, steps, and shackles. Multiple steps are fixed on the cable at equal intervals. The steps include wooden steps and steel steps. A shackle is fixed at the bottom of the cable. The rope ladder passes through the rope ladder guide wheel and the bottom plate of the embarkation platform downward in sequence and is connected to the fastening eye plate through the shackle. First, wirelessly connect the winch remote control and the remote control device. After the connection, click the rope ladder lowering button. When the rope ladder is lowered to a point large enough for people to board the journey, press the brake button. The relevant operating personnel connect the shackle on the rope ladder to the mooring eye plate to fix the lower end of the rope ladder. When the lower end of the rope ladder is fixed, click the recovery button. When the rope ladder is fixed and tensioned between the winch and the mooring eye plate, stop recovering. After checking that the rope ladder is in correct condition, the personnel climb up the rope ladder to the embarkation platform, walk from the embarkation platform to the unmanned platform deck, and complete the embarkation operation.

2. The anti-theft boarding method for an unmanned platform according to claim 1, characterized in that: One end of the support rod is fixed to the lower surface of the embarkation platform, and the other end is fixedly connected to the side outer plate of the unmanned platform.

3. The anti-theft boarding method for an unmanned platform according to claim 1, characterized in that: The length of the rope ladder shall not be less than 13 meters.

4. The anti-theft boarding method for an unmanned platform according to claim 1, characterized in that: The winch drum diameter is 1 meter and the rope ladder guide wheel diameter is 800mm.

5. The anti-theft boarding method for an unmanned platform according to claim 1, characterized in that: There are a plurality of lashing eye plates, the plurality of lashing eye plates are located in the same row, and the plurality of lashing eye plates are arranged below the embarkation platform at equal intervals.

6. The anti-theft boarding method for an unmanned platform according to claim 5, characterized in that: The spacing between multiple securing eye plates is 500mm.

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