BOARDING APPARATUS FOR OFFSHORE PLATFORM

The present application discloses a boarding apparatus for an offshore platform, including a lifting apparatus and a track structure; the track structure is connected to a platform main body of the offshore platform and extends beyond the platform main body; the lifting apparatus is connected to the track structure, and the lifting apparatus is at least movable along the track structure with a moored sea transporting apparatus; the lifting apparatus includes a ride-on assembly for lifting transportation of a ride-on object between the track structure and the sea transporting apparatus. This thus overcomes the impossibility of boarding caused by marine environmental factors and improves boarding efficiency, and avoids damage caused by the collision between the sea transporting apparatus and the offshore platform when the sea transporting apparatus is berthed at the platform.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Chinese Patent Application No. 202321945257.5, filed on Jul. 21, 2023, which is incorporated by reference in its entirety.

TECHNICAL FIELD

The present application relates to the technical field of boarding equipment, and in particular to a boarding apparatus for an offshore platform.

BACKGROUND

Offshore platforms can be fixed or movably floated on the sea, and perform production operations or other offshore activities on the sea. In the life cycle of various offshore platforms, they need various operation and maintenance vessels to provide operation support, such as loading and unloading of cargoes, supplying and assisting in the maintenance of the platforms, etc. During these operations, the problem of the boarding of workers from the operation and maintenance vessel to the platform or from the platform to the operation and maintenance vessel is involved.

Existing boarding methods are usually to make the operation and maintenance vessel abut against the offshore platform and a worker boards the platform through a ladder of the offshore platform. However, when the operation and maintenance vessel approaches the platform, the vessel may collide with the platform due to the inertia of the vessel itself, resulting in damage to the platform and the operation and maintenance vessel itself. In addition, in the case of big wind and wave at sea, the operation and maintenance vessel can't be stably berthed at the offshore platform and the worker can't board the platform. It is necessary to wait for an appropriate wind and wave environment for the operation and maintenance vessel to stably berth at the offshore platform, resulting in a low boarding efficiency.

SUMMARY

The present application provides a boarding apparatus for an offshore platform, which can improve boarding efficiency while avoiding damage caused by the collision between the sea transporting apparatus and the offshore platform when the sea transporting apparatus is berthed at the platform.

One aspect of the present application provides a boarding apparatus for an offshore platform, including a lifting apparatus and a track structure; the track structure is connected to a platform main body of the offshore platform and extends beyond the platform main body; the lifting apparatus is connected to the track structure, and the lifting apparatus is at least capable of moving along the track structure with a moored sea transporting apparatus; the lifting apparatus includes a ride-on assembly for lifting transportation of a ride-on object between the track structure and the sea transporting apparatus.

In some possible implementations, the lifting apparatus further includes a power assembly; the ride-on assembly is connected to the power assembly, the power assembly is configured to drive the ride-on assembly to lift between the track structure and the sea transporting apparatus.

In some possible implementations, the lifting apparatus further includes a remote control apparatus;the remote control apparatus is configured to receive a remote control signal and control at least one of the following:the power assembly to drive the lifting apparatus to move along the track structure;the power assembly to drive the ride-on assembly to lift between the track structure and the sea transporting apparatus.

In some possible implementations, the power assembly includes an energy storage component; the energy storage component is configured to provide kinetic energy to the power assembly.

In some possible implementations, the power assembly is connected to the platform main body; the platform main body is configured to provide kinetic energy to the power assembly.

In some possible implementations, the ride-on assembly includes a sling and/or an elevator.

In some possible implementations, the track structure is connected to the platform main body via a rotational control assembly; the rotation control assembly is configured to receive a remote control signal to control the track structure to rotate along an outer wall of the platform main body.

In some possible implementations, both ends of the track structure are provided with limit apparatuses, respectively, the limit apparatuses are configured to limit displacement positions of the lifting apparatus.

In some possible implementations, the platform main body is provided with a ladder; the ladder is provided on the outer wall of the platform main body and is located below the track structure; the lifting apparatus is configured to make the ride-on object lift between the ladder and the sea transporting apparatus.

The technical solutions provided in the present application have the following beneficial effects compared with the prior art.

In the present application, the lifting apparatus moves on the track structure with the moored sea transporting apparatus; the ride-on assembly is used to lift the ride-on object between the track structure and the sea transporting apparatus; the lifting apparatus can adjust its position on the track structure according to the position of the sea transporting apparatus; therefore, there is no need for the sea transporting apparatus to be berthed at the offshore platform. Thus, the non-contact boarding between the sea transporting apparatus and the offshore platform is achieved by the lifting apparatus. This overcomes the impossibility of boarding caused by marine environmental factors and improves boarding efficiency, and avoids damage caused by the collision between the sea transporting apparatus and the offshore platform when the sea transporting apparatus is berthed at the platform.

DESCRIPTION OF EMBODIMENTS

Exemplary embodiments are described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, same numbers in different drawings indicate the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatuses consistent with certain aspects of the present application as detailed in the appended claims.

Other embodiments of the present application will be apparent to the skilled in the art from consideration of the specification and practice of the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the application, which follow the general principle of the present application and include common general knowledge or common technical means in this technical field that are not disclosed in the present application. The specification and embodiments are to be regarded as exemplary only, with the true scope and spirit of the present application indicated by the claims.

In order to explain the technical solutions of the present application, specific embodiments will be provided in the following.

Offshore platforms can be fixed or movably floated on the sea, and perform production operations, or other offshore activities on the sea. For example, offshore platforms can include offshore wind power platforms, offshore oil drilling platforms, living platforms, offshore operations platforms, etc. In the life cycle of these offshore platforms, they need various operation and maintenance vessels to provide operation support, such as loading and unloading of cargoes, supplying, emergency evacuation and rescue, and assisting in the maintenance of the platforms, etc. During these operations, the problem of the boarding of a worker from the operation and maintenance vessel to the platform or from the platform to the operation and maintenance vessel is involved.

In a case that the offshore platform is an offshore wind power platform for an example, in the existing solution, the boarding of the worker on the operation and maintenance vessel from the vessel to the wind power platform can be realized by making the operation and maintenance vessel abut against the wind power platform, and then allowing the worker to board the platform through a ladder at the bottom of the wind power platform. However, when the operation and maintenance vessel approaches the platform, the vessel may collide with the platform due to the inertia of the vessel itself, resulting in damage to the platform and the operation and maintenance vessel itself. In addition, in the case of big wind and wave at sea, the operation and maintenance vessel can't be stably berthed at the offshore platform and the worker can't board the platform. It is necessary to wait for an appropriate wind and wave environment for the operation and maintenance vessel to stably berth at the offshore platform, resulting in a low boarding efficiency.

Alternatively, in the existing solution, it is also possible for the worker on the operation and maintenance vessel to board the wind power platform from the vessel by using a large-scale operation and maintenance vessel equipped with a connecting bridge apparatus. For example,FIG.1shows a structural schematic diagram of the boarding of a large-scale operation and maintenance vessel in the related art. As shown inFIG.1, an operation and maintenance vessel11is equipped with a connecting bridge apparatus12having a dynamic positioning function. The connecting bridge apparatus12adjusts the position of a compensating ladder121provided on the connecting bridge apparatus12by means of the dynamic positioning function, and worker on the operation and maintenance vessel11can board a wind power platform13through the compensating ladder121. However, the large-scale operation and maintenance mother vessel is expensive, and the cost of purchasing and renting the operation and maintenance mother vessel is higher for only routine maintenance.

In order to solve the above problems, embodiments of the present application provide a boarding apparatus for an offshore platform, through which boarding efficiency can be improved and the damage caused by the collision between a sea transporting apparatus and the offshore platform during the sea transport device is berthed at the offshore platform can be avoided.

FIG.2shows a structural schematic diagram of a boarding apparatus for an offshore platform according to an embodiment of the present application. As shown inFIG.2, a boarding apparatus20can include a lifting apparatus21and a track structure22. The track structure22is connected to a platform main body23of an offshore platform and extends beyond the platform main body23; the lifting apparatus21is connected to the track structure22, and the lifting apparatus21is at least capable of moving along the track structure22with a moored sea transporting apparatus24;where the lifting apparatus21may include a ride-on assembly211for lifting transportation of a ride-on object between the track structure22and the sea transporting apparatus24.

It should be noted that the ride-on object can go up and down between the sea transporting apparatus24and the offshore platform through the ride-on assembly211, and the ride-on object can be a person or a good, or the ride-on object can also include both a person and a good. The sea transporting apparatus24can be any type of vessel, for example, a passenger vessel, a cargo vessel, an operation and maintenance vessel, etc.

It can be understood that the track structure22extends beyond the platform main body23, and the lifting apparatus21moves on the track structure22, so that the lifting apparatus21may be out of the range of the platform main body23. In this way, when the ride-on object on the sea transporting apparatus24need to board the platform main body23through the lifting apparatus21, the sea transporting apparatus24can move the lifting apparatus21above the sea transporting apparatus24without contacting the platform main body23. Therefore, the non-contact boarding between the sea transporting apparatus24and the offshore platform is achieved. This overcomes the impossibility of boarding caused by marine environmental factors and improves boarding efficiency, and also avoids damage caused by the collision between the sea transporting apparatus24and the offshore platform when the sea transporting apparatus24is berthed at the platform.

Exemplary, a case that the offshore platform is an offshore wind power platform, the sea transporting apparatus is a small-scale operation and maintenance ship for the offshore wind power platform, and the ride-on object is a worker on the small-scale operation and maintenance ship is taken as an example. When the worker on the small-scale operation and maintenance ship needs to board the wind power platform, the small-scale operation and maintenance ship may be moored to the sea surface, and the worker can control the lifting apparatus21to move on the track structure22so as to make the lifting apparatus21moved above the small-scale operation and maintenance ship. After the lifting apparatus21is moved above the small-scale operation and maintenance ship, the worker can continue to control the ride-on assembly211on the lifting apparatus21to make the ride-on assembly211lowered onto the small-scale operation and maintenance ship. Then, the worker can be lifted from the small-scale operation and maintenance ship to the track structure22by taking the ride-on assembly211, and then board the wind power platform from the track structure22.

In some possible implementations, the lifting apparatus21may further include a remote control apparatus; the remote control apparatus is configured to receive a remote control signal and control the lifting apparatus21to move along the track structure22.

It can be understood that the lifting apparatus21is connected to the track structure22, and when the sea transporting apparatus24is moored to the sea surface and is not in contact with the platform main body23, if the ride-on object needs to board the sea transporting apparatus24from the platform main body23, the lifting apparatus21can be directly moved on the track structure22at this time. However, if the ride-on object needs to board the platform main body23from the sea transporting apparatus24, the moving position of the lifting apparatus21cannot be controlled on the sea transporting apparatus24. Therefore, by providing the remote control apparatus on the lifting apparatus21, the lifting apparatus21can be remotely controlled to be moved above the sea transporting apparatus24at any time as long as the sea transporting apparatus24is moored at an appropriate position near the platform main body23, so as to maximize the convenience of boarding.

Where, the remote control apparatus can be any type of apparatuses that can realize remote control. For example, an infrared remote control device, a bluetooth remote control device, etc. The type of the remote control apparatus can be selected based on actual use requirements, and the embodiments of the present application do not specifically limit this.

In some embodiments, the track structure22can be disposed on a structure of the offshore platform itself extending beyond the platform main body23.

It can be understood that the track structure22needs to extend beyond the platform main body23. If the offshore platform itself has structures extending beyond the platform main body23, the structures may be directly used to build the track structure22, and there is no need to build an additional carrier for the track structure22, thus increasing the convenience of setting the boarding apparatus20.

Exemplary,FIG.3is a structural schematic diagram of an offshore platform according to an embodiment of the present application. As shown inFIG.3, in an offshore platform30, a platform main body23is provided at the center of the top of a floating body assembly31, the floating body assembly31includes four floating body structures311, and the floating body assembly31is used for providing buoyancy for the platform main body23. An outer wall of the platform main body23is provided with a stairway231, and expanded stairways32are provided between the stairway231and the four floating body structures311, respectively. When the offshore platform30is moored on the sea surface, the expanded stairways32are located above the sea level. At this time, the track structure22can be directly provided on any one of the expanded stairways32, or each of the expanded stairways32is provided with a track structure22, and track structures22disposed on respective expanded stairways32communicate with each other.

FIG.4is another structural schematic diagram of a boarding apparatus according to an embodiment of the present application. As shown inFIG.4, the track structure22is provided on the expanded stairway32, the expanded stairway32is provided between the stairway231on the platform main body23and the floating body structure body311, and a part of the floating body structure311is located above a sea level line41. When a worker on the sea transporting apparatus24needs to board the offshore platform, the sea transporting apparatus24can be moored below the track structure22between the platform main body23and the floating body structure311, and then the lifting apparatus21is controlled to move to the top of the sea transporting apparatus24, so as to achieve boarding through the lifting apparatus21.

It should be noted that when the track structures22is disposed on the structure of the offshore platform itself extending beyond the platform main body23, there should be enough space between the track structure22and the sea level to accommodate the offshore transporting apparatuses for mooring. That is, a distance of the track structure22from the sea level needs to be at least larger than a height of the sea transporting apparatus24when being moored on the sea surface. However, when the offshore platform is the structure as shown inFIG.3, it is necessary to ensure that a distance between the platform main body23and the floating body structure311is larger than a size of the sea transporting apparatus24. That is, when the sea transporting apparatus24is moored below the track structure22, at least a space for accommodating the sea transporting apparatus24below the track structure22is needed.

In some embodiments, the configuration that the track structure22extends beyond the platform main body23can be achieved by additionally building a corridor on the platform main body23as a carrier of the track structure22.

FIG.5is a structural schematic diagram of another boarding apparatus according to an embodiment of the present application. As shown inFIG.5, the platform main body23is provided with a corridor51extending beyond the platform main body23, and the track structure22is provided on the corridor51.

It can be understood that when boarding, the sea transporting apparatus24needs to be moored below the track structure22, so that the lifting apparatus21can be moved to the top of the sea transporting apparatus24, and the boarding can be achieved by the lifting apparatus21. Therefore, the longer the length of the track structure22, the larger the sea space below the track structure22, and thus the greater the operability of the sea transporting apparatus24. If the corridor51is additionally built on the platform main body23as the carrier of the track structure22, the longer the corridor51is, the longer the length of the buildable track structure22. However, the longer the length of the corridor51, the higher the structural strength of the corridor51needs to have. Therefore, in the embodiments of the present application, the length of the corridor51can be specifically determined based on actual use situations of the corridor51and actual use requirements of the track structure22.

In some possible implementations, the lifting apparatus21can further include a power assembly; the ride-on assembly211is connected to the power assembly, the power assembly is used to drive the ride-on assembly211to lift the ride-on assembly211between the track structure22and the sea transporting apparatus24.

Where, the power assembly can be an apparatus that provides kinetic energy for the ride-on assembly211to drive the ride-on assembly211to automatically lift the ride-on object between the track structure22and the sea transporting apparatus24. The power assembly can be integrated with the lifting apparatus21, or the power assembly can be connected to the lifting apparatus21as a separate apparatus.

In some possible implementations, the remote control apparatus is used to receive the remote control signal and control at least one of the following:the power assembly to drive the lifting apparatus21to move along the track structure22;the power assembly to drive the ride-on assembly to lift between the track structure22and the sea transporting apparatus24.

It can be understood that is that the power assembly is controlled by the remote control apparatus to drive the lifting apparatus21to move along the track structure22. In this way, the lifting apparatus21can be remotely controlled to move above the sea transporting apparatus24at any time, thereby maximizing the convenience of boarding.

It can be understood that the power assembly is controlled by the remote control apparatus to drive the ride-on assembly211to automatically lift the ride-on object between the track structure22and the sea transporting apparatus24.

In some possible implementations, the power assembly can be integrated with the lifting apparatus21, or the power assembly can be connected to the lifting apparatus21as a separate apparatus.

In some possible implementations, the power assembly can drive the lifting apparatus21and/or the ride-on assembly211through power transmission methods such as gears, belts, pulley blocks, etc., this is not limited here. It should be noted that the power assembly can be any type of apparatus that can provide kinetic energy. For example, the power assembly can be an electric motor that consumes electrical energy to provide kinetic energy, or the power assembly also can be an internal combustion engine that consumes fossil fuels to provide kinetic energy, etc.

In some embodiments, the ride-on assembly211automatically lifts between the track structure22and the sea transporting apparatus24, which can be achieved by remotely controlling the power assembly to drive the ride-on assembly211to lift.

Where, the remote control of the power assembly can be achieved through the foregoing remote control apparatus. For example, different control signals can be used to control the lifting apparatus21to move on the track structure22, and to control the power assembly to drive the ride-on assembly211to lift. The remote control apparatus selects to control the lifting apparatus21to move on the track structure22or to control the power assembly to drive the ride-on assembly211to lift based on the received different control signals. Alternatively the remote control of the power assembly can also be achieved by integrating an additional remote control apparatus in the power assembly. Different remote control apparatuses may receive different control signals, and different remote control apparatuses may be used to achieve the control of the lifting apparatus21to move on the track structure22or to achieve the control of the power assembly to drive the ride-on assembly211to lift, respectively.

In some embodiments, the ride-on assembly211can not only be automatically lifted through the power assembly, but also be manually lifted by human labor.

It can be understood that when the power assembly is unable to provide kinetic energy, for example, when the power assembly is run out of energy or is faulted, or when the lifting apparatus21is not equipped with the power assembly, the ride-on assembly211cannot achieve automatic lifting. At this time, it is also possible to manually lift the ride-on assembly211by human labor.

Exemplary,FIG.6is a structural schematic diagram of a lifting apparatus according to an embodiment of the present application, as shown inFIG.6. the lifting apparatus21includes a pulley assembly6that is movable on the track structure22, and the ride-on assembly211is a sling connected to the pulley assembly61. When the sea transporting apparatus24is moored below the track structure22, the lifting apparatus21can move above the sea transporting apparatus24. At this point, both ends of the sling can come into contact with the sea transporting apparatus. A case in which the riding object is a worker on the sea transporting apparatus is taken as an example. When the worker needs to be transported to the offshore platform, the worker can be fixed to one end of the sling, and other workers on the sea transporting apparatus24can pull the other end of the sling, so as to drive the worker who needs to board the platform to rise to the track structure22, and then the worker will move from track structure22to the offshore platform.

In some possible implementations, the ride-on assembly211may at least include a sling and/or an elevator.

In some embodiments, when the ride-on assembly211is manually lifted by human labor, the ride-on assembly211can be a sling. For example, the lifting apparatus21may include a pulley assembly as shown inFIG.6, which is movable on the track structure22. At this point, the sling can be connected to the pulley assembly and the ride-on object can be fixed to one end of the sling, and the other end of the sling can be manually pulled to lift the ride-on object to the track structure22.

In other embodiments, when the automatic lifting of the ride-on assembly211is achieved through the power assembly, the ride-on assembly211can include a sling, or can include an elevator, or the ride-on assembly211can also include both the sling and the elevator. For example,FIG.7a-7care structural schematic diagrams of the ride-on assemblies211according to embodiments of the present application. Where,FIG.7ais a structural schematic diagram of a ride-on assembly including a sling according to an embodiment of the present application. Where, the sling71is connected to a winder72. At this time, the power assembly controls the winder to roll up or release the sling, thus the lifting of the sling between the track structure22and the sea transporting apparatus24is achieved.FIG.7bis a structural schematic diagram of a ride-on assembly including an elevator according to an embodiment of the present application. Where, the elevator73is composed of multiple telescopic structures731. When the multiple telescopic structures731are unfolded, the elevator73can contact the sea transporting apparatus24.FIG.7cis a structural schematic diagram of a ride-on assembly including a sling and an elevator at the same time according to an embodiment of the present application. Where, one end of the elevator73can be rotatably connected to the platform main body23, and the other end of elevator73is connected to two slings71, the two slings71are respectively connected to the platform main body23through two winders72. The two winders72roll up or release the slings71synchronously. When the sling71is rolled up, the elevator73rises; when the sling71is released, the elevator descends until it comes into contact with the sea transporting apparatus24.

In some embodiments, when the ride-on assembly211achieves automatic lifting by kinetic energy provided through the power assembly, the power assembly can also provide kinetic energy for the movement of the lifting apparatus21on the track structure22. Based on this, in some possible implementations, the power assembly is also used to drive the lifting apparatus21to move on the track structure22when the remote control apparatus receives the control signal.

Exemplary, the remote control apparatus can control the power assembly to provide kinetic energy for the movement of the lifting apparatus21on the track structure22or for the lifting of the ride-on assembly211. For example, different control signals can be used to control the lifting apparatus21to move on the track structure22, and to control the power assembly to drive the ride-on assembly211to lift, can be different control signals. The remote control apparatus selects to control the power assembly to drive the lifting apparatus21to move on the track structure22or to drive the ride-on assembly211to lift based on the received different control signals.

In some possible implementations, the power assembly includes an energy storage component; the energy storage component is used to provide kinetic energy for the power assembly.

It should be noted that the type of the energy storage component can be determined based on the type of the power assembly. For example, the power assembly can be an electric motor that consumes electrical energy, and the energy storage component can be an energy storage battery that stores electrical energy. Where, in order to ensure that energy storage battery can provide long-term power supply, a pure battery material with high energy density can be used for the energy storage battery, such as a lithium iron phosphate battery, a flow battery, etc. with large capacity and long-term energy storage. Alternatively, the power assembly can also be an internal combustion engine that consumes oil, and the energy storage component here can be a fuel tank for storing oil.

In some embodiments, the power assembly can be completely powered by the energy storage component, or the power assembly can also be powered by an independent energy supply system, with an assisted energy supply by the energy storage component. When the power assembly is completely powered by the energy storage component, the power assembly can only function normally when the energy in the energy storage component meets the requirements of the power assembly. When the power assembly has an independent energy supply system, and a case that the energy supply system of the power assembly is a power system and the energy storage component is an energy storage battery is taken as an example, the power assembly can be directly connected to a power grid and is powered through the power grid; when there is power outage or failure in the grid, the power assembly can continue to be powered by the energy storage component. The energy storage component can also be connected to the power grid, and when the energy storage component is not in operation, the energy storage component can be charged through the power grid to ensure the continuous power supply of the power assembly when the power grid cannot provide power to the power assembly.

In some possible implementations, the power assembly is connected to the platform main body; the platform main body23is used to provide kinetic energy for the power assembly.

It can be understood that when the offshore platform itself is a platform capable of generating energy, the power assembly can directly use the energy generated by the platform itself without the need to connect to an additional energy supply system.

Exemplary, the offshore platform is an offshore wind power generation platform, and the power assembly is an electric motor that consumes electricity. At this point, an input end of the power assembly can be directly connected to an output end of the wind power platform, and the power assembly is powered by the electrical energy output from the wind power platform.

In embodiments of the present application, the platform main body23directly provides kinetic energy to the power assembly, achieving on-site consumption of energy generated by the platform main body, without the need to design an additional energy supply system for the power assembly, thereby improving the convenience of the overall setting of the boarding apparatus.

In some possible implementations, the track structure22is connected to the platform main body23through a rotation control assembly; the rotation control assembly is used to receive the remote control signal and control the track structure22to rotate along the outer wall of the platform main body23.

Exemplary,FIG.8is a structural schematic diagram of the track structure22according to an embodiment of the present application. As shown inFIG.8, the track structure22is connected to the outer wall of the platform main body23through a rotation control assembly81that is rotatable around the outer wall of the platform main body23.

It can be understood that the sea transporting apparatus24needs to be moored below the track structure22, so that by means of the lifting of the ride-on assembly connected to the lifting apparatus21on the track structure22, the boarding of the ride-on object from the sea transporting apparatus24onto the platform is achieved. By providing the track structure22to rotate along the outer wall of the platform main body23, the sea transporting apparatus24can be moored at any sea area below a rotation area of the track structure22, thereby improving the operability of the sea transporting apparatus24, facilitating the selection of a suitable position for mooring of sea transporting apparatus24, and thus improving boarding efficiency.

In some possible implementations, each of two ends of the track structure22is provided with a limit apparatus, respectively, the limit apparatus is used to limit a displacement position of the lifting apparatus21.

It can be understood that the lifting apparatus21is moved on the track structure22. In order to prevent the lifting apparatus21from sliding out of the track structure22during movement, limit apparatuses can be added at both ends of the track structure22to limit the position where the lifting apparatus21can be moved on the track structure22.

FIG.9is a structural schematic diagram of the track structure22in an embodiment of the present application. As shown inFIG.9, two ends of the track structure22are provided with limit apparatuses91respectively, and the lifting apparatus21can move within the area limited by the two limit apparatuses91.

In some possible implementations, the platform main body23is provided with a ladder; the ladder is located on the outer wall of the platform main body23and below the track structure22.

Where, the lifting apparatus is used to lift the ride-on object between the ladder and the sea transporting apparatus24.

It can be understood that the offshore platform is usually provided with a ladder to facilitate a worker on the sea transporting apparatus24to board the platform. However, due to the fact that the ladder is usually made of a metal material, the ladder is prone to corrosion when in contact with seawater. To avoid that the ladder cannot be used due to seawater corrosion, the ladder can be provided at the sea level line position. Meanwhile, due to the presence of waves on the sea surface, the actual height to which seawater can corrode is relatively high, and thus the position of the ladder may be higher in consideration of the influence of waves. Therefore, in embodiments of the present application, the achievement of boarding the platform by means of the lifting apparatus21may also be that the worker who needs to board the platform is lifted from the sea transporting apparatus24to the ladder by the lifting apparatus21, and then the worker can board the platform through the ladder.

Exemplary,FIG.10is a structural schematic diagram of an offshore platform30according to an embodiment of the present application. As shown in FIG.10, the platform main body23is provided with a ladder101, and the ladder101is located below the track structure22. The lifting apparatus21is movable on the track structure22, and the ride-on assembly211on the lifting apparatus21can be lifted between the ladder and the sea transporting apparatus24. The ride-on object on the sea transporting apparatus24can be transported to the ladder101, or the ride-on object can be transported from the ladder101to the sea transporting apparatus24.

In embodiments of the present application, the lifting apparatus21moves on the track structure22along with the moored sea transporting apparatus24, and the ride-on object is lifted between the track structure22and the sea transporting apparatus24using the ride-on assembly211. The lifting apparatus21can adjust its position on the track structure22according to the position of the sea transporting apparatus24, and the sea transporting apparatus24does not need to be berthed at the offshore platform. In this way, non-contact boarding between the sea transporting apparatus24and the offshore platform is achieved through the lifting apparatus21. This overcomes the impossibility of boarding caused by marine environmental factors and improves boarding efficiency, and also avoids damage caused by collisions between the sea transporting apparatus24and the offshore platform when the sea transporting apparatus is berthed at the offshore platform.

Persons of ordinary skill in the art can understand that the magnitude of the serial numbers of respective steps in the above embodiments does not imply the order of execution. The execution order of respective processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.

The foregoing embodiments are merely intended for describing the technical solutions of the present application other than limiting the present application. Although the present application is described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they can still make modifications to the technical solutions described in the foregoing embodiments or make equivalent substitutions to some technical features thereof, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions in embodiments disclosed herein, and shall be included in the protection scope of the present disclosure.