Marine ROV door

Abstract

The invention provides a marine ROV door which is arranged at the end of a ship body, ROV equipment is arranged on the inner side of the ROV door, the marine ROV door comprises a door frame, door plates arranged on the door frame and a guide rail arranged below the door frame and communicated with the door frame, the door plates comprise at least two upper door plates and at least two lower door plates, and the upper door plates and the lower door plates are arranged on the guide rail. The at least two upper door plates are located above the lower door plate, the lower door plate is arranged on the lower portion of the door frame and the guide rail in a sliding mode, and when the ROV door is in a closed state, the upper door plates of the door plate are located over the lower door plate; when the ROV door is in an open state, the upper door plate is folded upwards, the lower door plate slides to the position below the door frame from the lower portion of the door frame to the guide rail, so that the door frame is completely opened, and at the moment, ROV equipment on the inner side of the ROV door can be rocked out of the outboard from the inner side of the ROV door.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, in particular to a ship-used ROV door. Background Art

[0002] In the operation and operation of offshore vessels and other types of special ships, underwater robots (ROVs) play an indispensable and important role. These special ships often need to perform complex and highly professional tasks such as marine resource exploration, subsea facility inspection and maintenance, deep-sea scientific research and investigation, etc. Underwater robots, with their advantages of being able to penetrate into different depths underwater and flexibly carry out various operations, have become a powerful assistant to help ships complete these key tasks.

[0003] In order to properly house these underwater robots and facilitate their smooth entry and exit from the ship to carry out operations, a special underwater robot hangar is usually set up on the ship. This hangar is like an "exclusive harbor" for underwater robots, providing them with a space environment for storage, maintenance, and preparation for operations. At the same time, in order for the underwater robots to safely enter the underwater environment outside the ship from the hangar to operate, and to return to the hangar smoothly after the operation is completed, two sets of ROV doors need to be installed on both sides of the ship.

[0004] During the normal navigation of the ship or the period when the underwater robot is not operating, these ROV doors are usually closed, playing a vital protective role. On the one hand, the closed ROV door can achieve the function of wind and rain tightness, that is, to prevent the outside wind, rain, waves and various debris from entering the hangar, ensuring that the underwater robot and related equipment in the hangar are in a relatively dry, stable and safe environment, avoiding damage to the equipment due to moisture, water ingress, etc., affecting the normal development of subsequent operations; on the other hand, the closed door also helps to maintain the overall watertightness and structural integrity of the ship, ensuring the safety and stability of the ship's navigation at sea.

[0005] However, when the underwater robot is needed to go out for operations, the ROV door will open, and the underwater robot in the warehouse can move outboard along the established channel and enter the vast underwater world to perform corresponding tasks.

[0006] At present, in practical applications, existing ROV doors have some prominent problems, which seriously affect their use effect and overall performance on special ships. One of them is the defect in tightness. Especially when facing large waves, it is difficult for existing ROV doors to meet the requirements of wind and rain tightness.

[0007] Take the ROV door with rolling shutter as an example. Rolling shutter doors are usually made of interconnected door panels or curtains, and the door is opened and closed by rotating the reel. Although rolling shutter doors have the advantages of relatively simple structure and convenient opening and closing, their own structural characteristics determine that they have natural disadvantages in terms of sealing. Under the impact of large waves, seawater may penetrate from the gaps between door panels, the connection between curtains and door frames, and other parts. Moreover, with the continuous beating and shaking of waves, this gap will be further expanded, causing more seawater and wind and rain to enter the hangar. Even if some sealing measures are taken during installation, such as adding sealing strips, these sealing materials are easily aged, worn or washed away under the long-term and high-intensity wave action, and thus cannot effectively block the intrusion of seawater and wind and rain.

[0008] The ROV door with two flat openings, although different from the rolling shutter door in appearance and opening method, also faces the problem of poor tightness. When the two flat opening door panels are closed, the sealing effect is mainly achieved by the fit between the door and the door frame and the sealing strip. However, during the voyage of the ship, since the hull itself will continue to shake and vibrate with the waves, this relatively rigid connection method can easily cause displacement between the door panel and the door frame, destroying the original sealing state. Especially when encountering large waves, the huge impact force will further aggravate this displacement, causing a large gap between the door and the door frame, and seawater and wind and rain will take the opportunity to enter the hangar, causing potential damage to the underwater robot and other equipment, and also affecting the normal operation and operational safety of the ship.

[0009] In addition to the problem of poor tightness, the existing ROV doors have another defect that cannot be ignored, that is, when the underwater robot (ROV) is operating, the door must be fully opened and there is a lack of corresponding protection measures at the bottom of the door.

[0010] In actual operation scenarios, in order to ensure that the underwater robot can smoothly move outboard through the ROV door and enter underwater, the existing ROV door is often designed to be fully open, which makes the entire opening of the door completely exposed. On the one hand, this fully open method makes it impossible for the hangar interior to be blocked from the external underwater environment. When there is a large water flow, debris or marine life approaching with the water flow, it is easy to directly rush into the hangar, which may cause collision, entanglement and other damage to the equipment and cables in the hangar, increasing the difficulty and risk of equipment maintenance; on the other hand, more importantly, in the bottom area of ​​the door, due to the lack of effective protection measures, some precision parts at the bottom of the underwater robot (such as sensors, thrusters, etc.) are easy to scratch and collide with the bottom edge of the door or the surrounding hull structure during the process of entering and exiting. Once these key parts are damaged, it will directly affect the accuracy and reliability of the underwater robot's subsequent operations, and may even cause the underwater robot to fail to work properly, requiring a lot of time and energy to repair, replace parts and other operations, seriously affecting the overall operation efficiency and task progress of the ship. Summary of the invention

[0011] A major advantage of the present invention is to provide a ship ROV door, wherein the ship ROV door can be opened and closed in a folding and sliding manner, and can maintain overall sealing when closed.

[0012] Another advantage of the present invention is that it provides a ship ROV door, wherein the ship ROV door includes at least two upper door panels and a lower door panel, wherein the upper door panel is opened and closed by folding, and the lower door panel is opened and closed by sliding. When the ship ROV door is in a closed position, the upper and lower door panels are in a 180° state and pressed on the door frame, and sealing rubbers and locking devices are arranged around them to ensure wind and rain tightness and even water tightness.

[0013] Another advantage of the present invention is to provide a marine ROV door, wherein the marine ROV door has a simple structure and high reliability, and does not require a complex mechanical structure and expensive mechanical equipment. Therefore, the present application successfully provides an economical and effective solution.

[0014] According to one aspect of the present invention, a ship-based ROV door of the present invention capable of achieving the aforementioned purpose and other purposes and advantages is provided at the end of a hull, and an ROV device is provided on the inner side of the ROV door, comprising: a door frame, a door panel provided on the door frame, and a guide rail provided below the door frame and connected to the door frame, wherein the door panel comprises at least two upper door panels and a lower door panel, the at least two upper door panels are located above the lower door panel, and the lower door panel is slidably provided on the lower part of the door frame and the guide rail, when the ROV door is in a closed state, the upper door panel of the door panel is located directly above the lower door panel; when the ROV door is in an open state, the upper door panel is folded upward, and the lower door panel slides from the lower part of the door frame to the guide rail to the bottom of the door frame, so that the door frame is fully opened, at which time the ROV device on the inner side of the ROV door can be shaken out from the inner side of the ROV door.

[0015] According to one embodiment of the present invention, the at least two upper door panels further include a first upper door panel and a second upper door panel, wherein the first upper door panel and the second upper door panel are connected to each other, and the first upper door panel is located above the second upper door panel. The first upper door panel and the second upper door panel of the upper door panel can move upward along the door frame and the first upper door panel and the second upper door panel can be flipped and folded.

[0016] According to one embodiment of the present invention, the first upper door panel and the second upper door panel are connected via a hinge, and the first upper door panel is movably connected to an upper edge of the hull or the door frame via the hinge.

[0017] According to one embodiment of the present invention, the door panel sliding rail of the door frame is connected to the guide rail, wherein the lower door panel can slide between the lower end of the door panel sliding rail of the door frame and the guide rail, and the guide rail is arranged below the door frame and extends below the deck of the hull.

[0018] According to one embodiment of the present invention, the ROV door further includes a sealing strip and a locking device, wherein the sealing strip is arranged between the door frame and the door panel, and the locking device is used to fix the door panel, and when the ROV door is in the closed state, the locking device fixes the door panel at a specific position of the door frame.

[0019] According to one embodiment of the present invention, the ROV door further comprises at least one driving device, wherein the driving device is connected to the door panel and is used to drive the door panel to switch between an open position and a closed position.

[0020] According to one embodiment of the present invention, the driving device further comprises a lower door panel driving mechanism, wherein the lower door panel driving mechanism is connected to the lower door panel.

[0021] According to one embodiment of the present invention, the driving device further comprises an upper door panel driving mechanism, which is connected to the upper door panel and is used to drive the first upper door panel and the second upper door panel of the upper door panel to move and fold.

[0022] According to one embodiment of the present invention, the track further includes a track body and a guide wheel arranged on the track body, wherein the guide wheel is movably arranged on the inner side of the track body, and when the lower door panel slides downward, the guide wheel guides the lower door panel to move downward and outward, and the lower door panel is separated from the sealing strip during the outward movement.

[0023] According to one embodiment of the present invention, the ROV door further includes at least one limit latch, wherein the limit latch is arranged on one side of the door frame, and when the upper door panel is moved and folded at the upper end of the door frame, the limit latch can fix the upper door panel to keep the ROV door in an open state.

[0024] Further objects and advantages of the present invention will be fully apparent from an understanding of the following description and the accompanying drawings.

[0025] These and other objects, features and advantages of the present invention will be more fully understood from the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of a marine ROV door in a closed state according to a first preferred embodiment of the present invention.

[0027] Figure 2 Schematic diagram of the marine ROV door in an open state according to the first preferred embodiment of the present invention.

[0028] Figure 3 1 is a side view of the marine ROV door in a closed state according to the first preferred embodiment of the present invention.

[0029] Figure 4 4 is a side view of the marine ROV door in an open state according to the first preferred embodiment of the present invention.

[0030] Figure 5A and Figure 5B Schematic diagram of the operation of the ship ROV door according to the first preferred embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0032] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0033] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0034] Referring to the drawings of this application specification Figures 1 to 5B As shown, a ship ROV door according to the first preferred embodiment of the present application is explained in the following description, and the ship ROV door is referred to as ROV door below. The ship ROV door is arranged at the end of the hull, and ROV equipment is arranged inside the door, wherein the ROV door can be adjusted to switch between an open state and a closed state, when the ROV is opened, the ROV equipment inside the door can be operated to swing outward, and after it is in place, the ROV equipment is released downward from the door frame to work in the sea; when the ROV door is closed, the ROV door is in a sealed closed state, ensuring wind and rain tightness and even water tightness.

[0035] It should be noted that ROV equipment is installed on the inside of the ROV door. These ROV equipment are designed to perform various underwater detection and operation tasks, such as marine resource exploration, seabed facility inspection and maintenance, etc.

[0036] When the ROV door is opened, the ROV equipment inside it can be operated to swing outward, and when it is accurately in place, the ROV equipment can be released from the door frame along a predetermined path downward into the sea, thereby starting a normal underwater workflow, allowing the ship to carry out corresponding underwater operations with the help of the ROV equipment; and when the ROV door is closed, the ROV door can be in a sealed closed state, and its sealing structure can ensure wind and rain tightness and even water tightness, effectively blocking external seawater, wind and rain, and various debris from entering the space inside the ROV door, providing a safe, stable and dry storage and preparation environment for the ROV equipment, ensuring that the ROV equipment is not corroded or damaged by external factors, and ensuring the reliability of its performance and the normal development of subsequent operations.

[0037] In detail, the ROV door includes a door frame 10, a door panel 20 arranged on the door frame 10, and a guide rail 30 arranged below the door frame 10 and connected to the door frame 10, wherein the door panel 20 includes at least two upper door panels 21 and a lower door panel 22, the at least two upper door panels 21 are located above the lower door panel 22, and the lower door panel 22 is slidably arranged on the lower part of the door frame 10 and the guide rail 30, when the ROV door is in a closed state, the upper door panel 21 of the door panel 20 is located directly above the lower door panel 22, and the upper door panel 21 and the lower door panel 22 are connected at 180°. When the ROV door is in an open state, the upper door panel 21 is folded upward, and the lower door panel 22 slides from the lower part of the door frame 10 to the guide rail 30 to the bottom of the door frame 10, so that the door frame 10 is fully opened. At this time, the ROV equipment on the inner side of the ROV door can be shaken out from the inner side of the ROV door.

[0038] In the preferred embodiment of the present application, the at least two upper door panels 21 further include a first upper door panel 211 and a second upper door panel 212, wherein the first upper door panel 211 and the second upper door panel 212 are connected to each other, and the first upper door panel 211 is located above the second upper door panel 212. The first upper door panel 211 and the second upper door panel 212 of the upper door panel 21 can move upward along the door frame 10 and the first upper door panel 211 and the second upper door panel 212 can be flipped and folded so that the ROV door can be fully opened.

[0039] Specifically, the first upper door panel 211 and the second upper door panel 212 are connected via a hinge, and the first upper door panel 211 is movably connected to the upper edge of the hull or the door frame via the hinge.

[0040] When the ROV door is in the closed state, the second upper door panel 212 of the ROV door is docked with the lower door panel 22. When the ROV door is in the open state, the upper door panel 21 of the ROV door is moved to the top of the door frame 10, and the first upper door panel 211 and the second upper door panel 212 are folded with each other, and the lower door panel 22 slides downward from the lower end of the door frame 10 to the track 30.

[0041] A door panel slide rail 100 is formed on the inner side of the door frame 10 for the upper door panel 21 to slide, wherein the second upper door panel 212 of the upper door panel 21 can be driven to slide up and down along the door panel slide rail 100, and when the lower end of the second door panel 212 slides upward to the upper end of the door frame 10, the first upper door panel 211 and the second upper door panel 212 of the upper door panel 21 are folded together.

[0042] The door panel slide rail 100 of the door frame 10 is connected to the guide rail 30, wherein the lower door panel 22 can slide between the lower end of the door panel slide rail 100 of the door frame 10 and the guide rail 30. The guide rail 30 is arranged below the door frame 10 and extends below the deck of the hull to meet the sliding requirements of the lower door panel 22. The guide rail 30 is closely connected to the door frame 10 in terms of spatial position and function, providing a precise and stable guide path for the movement of the lower door panel 22.

[0043] It is worth mentioning that in this preferred embodiment of the present application, the guide rail 30 is arranged below the door frame 10, and the guide rail 30 extends from top to bottom to below the deck of the hull. When the lower door panel 22 moves downward, the lower door panel 22 can move along the guide rail 30 to below the lower deck of the hull, thereby allowing the lower door panel 22 to open into place.

[0044] The ROV door further includes a sealing strip 40 and a locking device 50, wherein the sealing strip 40 is disposed between the door frame 10 and the door panel 20, and the locking device 50 is used to fix the door panel 20, and when the ROV door is in the closed state, the locking device 50 fixes the door panel 20 at a specific position of the door frame 10. The sealing strip 40 is filled between the door frame 10 and the door panel 20, and when the locking device 50 locks the door panel 20, the door panel 20 and the door frame 10 form a sealing structure to prevent water from entering the interior of the ROV door from the outside.

[0045] The locking device 50 is disposed on the lower door panel 22, and is used to fix the lower door panel 22. Preferably, in a specific example of the present application, the locking device 50 includes a hydraulic latch, a mechanical automatic wedge, and a manual latch.

[0046] The ROV door further comprises at least one driving device 60, wherein the driving device 60 is connected to the door panel 20 and is used to drive the door panel 20 to switch between the open position and the closed position. The driving device 60 further comprises a lower door panel driving mechanism 61 and an upper door panel driving mechanism 62, wherein the lower door panel driving mechanism 61 is connected to the lower door panel 22 and is used to drive the lower door panel 22 to move between the open position and the closed position.

[0047] Preferably, in the preferred embodiment of the application, the lower door panel driving mechanism 61 is arranged on the inner side of the door frame 10 , wherein the lower door panel driving mechanism 61 pulls the lower door panel 22 to move up and down along the track 30 .

[0048] As an example, in a specific example of the present application, the lower door panel driving mechanism 61 of the driving device 60 is implemented as a wire rope pulley cylinder, wherein the lower door panel driving mechanism 61 pulls the lower door panel 22 up and down along the track 30 through a wire rope.

[0049] The upper door panel driving mechanism 62 is connected to the upper door panel 21 , and is used to drive the first upper door panel 211 and the second upper door panel 212 of the upper door panel 21 to move and fold.

[0050] As an example, in a specific example of the present application, the upper door panel driving mechanism 62 is implemented as a hydraulic cylinder. When the lower door panel 22 is in the open position, the upper door panel driving mechanism 62 operates the first upper door panel 211, the first upper door panel 211 flips upward, the first upper door panel 211 drives the second upper door panel 212 to move together, and the rollers arranged at the bottom of the second upper door panel 212 move upward along the track, and the two door panels are in a folded upward movement state until the rollers of the second upper door panel 212 contact the top of the door frame track.

[0051] The ROV door further includes at least one limit latch 70, wherein the limit latch 70 is arranged on one side of the door frame 10, and when the upper door panel 21 is moved and folded at the upper end of the door frame 10, the limit latch 70 can fix the upper door panel 21 to keep the ROV door in an open state.

[0052] The track 30 further includes a track body 31 and a guide wheel 32 disposed on the track body 31 , wherein the guide wheel 32 is movably disposed on the inner side of the track body 31 , wherein the guide wheel 32 of the track 30 can guide the direction and angle of the lower door panel 22 sliding down.

[0053] The guide wheel 32 is located on the inner side of the lower door panel 22. When the lower door panel 22 slides downward, the guide wheel 32 guides the lower door panel 22 to move downward and outward. During the outward movement, the lower door panel 22 is separated from the sealing strip 40 to prevent the lower door panel 22 from rubbing against the sealing strip during the movement.

[0054] It is worth mentioning that the track body 31 is made of a high-strength, wear-resistant and corrosion-resistant metal material, and its shape and size are adapted to the bottom structure of the lower door panel 22 to ensure that the lower door panel 22 can slide smoothly thereon; the guide wheels 32 are movably arranged on the inner side of the track body 31, and they are evenly distributed on the inner side of the lower door panel 22. When the lower door panel 22 slides downward, the guide wheels 32 play a vital guiding role and can accurately guide the lower door panel 22 to move downward and outward. In addition, in the process of moving outward, due to the guiding effect of the guide wheels 32, the lower door panel 22 and the sealing strip 40 arranged between the door frame 10 and the door panel 20 can be naturally separated, effectively preventing unnecessary friction between the lower door panel 22 and the sealing strip 40 during the movement, thereby avoiding damage to the sealing strip 40, thereby ensuring that the sealing strip 40 can continue to perform good sealing performance in the subsequent closing and sealing process.

[0055] When the ROV door is fully opened, the ROV gantry can be swung out to the side, and when in place, the ROV is released downward from the gantry to work in the sea.

[0056] When the ROV is working for a long time, in order to ensure the safety of the personnel on the deck, the lower door panel 22 can be raised, and the lower door panel driving mechanism 61 operates the wire rope to lift the lower door panel 22 to a safe position along the guide rail 30, thereby ensuring the safety of the personnel and equipment working on the deck. In addition, since the lower door panel 22 is a nearly vertical up and down movement, the entire operation process will not interfere with the ROV's gantry and ROV equipment, and the operation is safe and reliable.

[0057] The opening and closing operation process of the ROV door is as follows:

[0058] Initial preparation: When the ship needs to release the ROV equipment for underwater operations, the ROV door must be opened first. At this time, if the ROV door is in a closed state, the operator must first operate the locking device 50 set on the lower door panel 22. Specifically, through the corresponding control button or manual operating mechanism (there are corresponding operating methods for the hydraulic latch and the manual latch respectively), the hydraulic latch and the manual latch lock the lower door panel 22, so that the lower door panel 22 can be released from the fixed state and prepare for the subsequent sliding action.

[0059] Lower door panel sliding down: After unlocking the lower door panel 22, the lower door panel driving mechanism 61 (i.e., the wire rope pulley cylinder) is started, and the lower door panel driving mechanism 61 pulls the lower door panel 22 through the wire rope to start sliding down along the guide rail 30. In the initial stage of sliding down, under the guidance of the guide wheel 32, the lower door panel 22 moves outward and downward. During this process, the lower door panel 22 and the sealing strip 40 are gradually separated. This is because the guiding effect of the guide wheel 32 enables the moving direction and angle of the lower door panel 22 to be accurately controlled, avoiding friction with the sealing strip 40 and ensuring the integrity of the sealing strip 40. Subsequently, the lower door panel 22 continues to move vertically downward along the guide rail 30 until the pulley (i.e., the guide wheel 32) contacts the bottom of the guide rail 30. At this time, the upper edge of the lower door panel 22 is not higher than the deck surface, and the lower door panel 22 is in the fully opened state, completing the sliding opening action of the lower door panel 22, freeing up the necessary space for the opening of the upper door panel 21.

[0060] The upper door panel folds and moves upward: When the lower door panel 22 is in the open position, the upper door panel drive mechanism 62 (hydraulic cylinder) starts to intervene. The upper door panel drive mechanism 62 first operates the first upper door panel 211 to flip it upward. Since the first upper door panel 211 and the second upper door panel 212 are connected by a hinge, the first upper door panel 211 will drive the second upper door panel 212 to move together when flipping upward. At the same time, the rollers arranged at the bottom of the second upper door panel 212 will move upward along the corresponding track (door panel slide rail 100) on the door frame 10, and the two door panels (the first upper door panel 211 and the second upper door panel 212) are in a folded upward movement state. As the movement continues, until the roller of the second upper door panel 212 contacts the top of the door frame track (door panel slide rail 100), the two top limit latches 70 will automatically move to support the second upper door panel 212 to ensure that it is stably in the open state. At this point, the entire upper door panel 21 is folded upward and opened, the ROV door is fully opened, and the ROV equipment inside it can be shaken out from the inside of the ROV door to prepare to enter the sea to carry out corresponding underwater operations.

[0061] The operation flow from open state to closed state is as follows:

[0062] When the ROV equipment completes the underwater operation task and needs to be taken back to the hangar, the ROV door needs to be closed. First, the limit latch 70 is operated to release the fixation of the upper door panel 21, and then the upper door panel drive mechanism 62 (hydraulic cylinder) is reversely driven to make the first upper door panel 211 and the second upper door panel 212 turn down and unfold along the track (door panel slide rail 100) on the door frame 10, and return to the initial relative position state; then, the lower door panel 22 is pulled upward along the guide rail 30 by the lower door panel drive mechanism 61 (wire rope pulley cylinder) to slide it back to the lower position of the door frame 10, and when it is close to the closed position, the lower door panel 22 gradually fits with the sealing strip 40, and finally the locking device 50 is operated to fix the lower door panel 22 at a specific position of the door frame 10, and the closing operation of the ROV door is completed, so that it returns to the sealed closed state, providing a safe storage environment for the ROV equipment, and ensuring the tightness of wind and rain tightness or even water tightness.

[0063] It is worth mentioning that after the ROV door is fully opened, the ROV gantry can be swung outward. After it is accurately in place, the ROV is released from the gantry down into the sea to start performing corresponding underwater operation tasks.

[0064] When the ROV is working for a long time, in order to ensure the safety of the personnel on the deck, the lower door panel 22 can be raised at this time. The specific operation is to operate the wire rope through the lower door panel drive mechanism 61 (wire rope pulley cylinder) to lift the lower door panel 22 to a safe position along the guide rail 30. In this process, the lower door panel drive mechanism 61 accurately controls the length and speed of the wire rope so that the lower door panel 22 can move upward smoothly and vertically along the guide rail 30 until it reaches the predetermined safe position. After the lower door panel 22 is raised, it can effectively block external factors that may threaten the personnel and equipment on the deck, such as preventing the impact of waves, splashing of debris, etc. from causing damage to personnel and equipment, thereby ensuring the safety of personnel and equipment working on the deck. In addition, since the lower door panel 22 moves up and down nearly vertically, the entire operation process will not interfere with the ROV gantry and ROV equipment, ensuring the safety and reliability of the operation, further improving the safety and stability of the entire underwater operation process, so that when the ship uses the ROV equipment to carry out underwater operations, both the operation of the ROV equipment itself and the safety of the relevant personnel and equipment on the deck can be effectively taken into account and realized.

[0065] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A ship ROV door, which is arranged at the end of the hull, and an ROV device is arranged inside the ROV door, characterized in that: The invention comprises: a door frame, a door panel arranged on the door frame, and a guide rail arranged below the door frame and connected to the door frame, wherein the door panel comprises at least two upper door panels and a lower door panel, the at least two upper door panels are located above the lower door panel, and the lower door panel is slidably arranged on the lower part of the door frame and the guide rail, and when the ROV door is in a closed state, the upper door panel of the door panel is located directly above the lower door panel; When the ROV door is in an open state, the upper door panel is folded upward, and the lower door panel slides from the lower part of the door frame to the guide rail to the bottom of the door frame, so that the door frame is fully opened. At this time, the ROV equipment on the inner side of the ROV door can be shaken out from the inner side of the ROV door.

2. The marine ROV door according to claim 1, wherein the at least two upper door panels further include a first upper door panel and a second upper door panel, wherein the first upper door panel and the second upper door panel are connected to each other, and the first upper door panel is located above the second upper door panel. The first upper door panel and the second upper door panel of the upper door panel can move upward along the door frame and the first upper door panel and the second upper door panel can be flipped and folded.

3. The marine ROV door according to claim 2, wherein the first upper door panel and the second upper door panel are connected by a hinge, and the first upper door panel is movably connected to the upper edge of the hull or the door frame by the hinge.

4. The marine ROV door according to claim 2, wherein the door panel slide rail of the door frame is connected to the guide rail, wherein the lower door panel can slide between the lower end of the door panel slide rail of the door frame and the guide rail, and the guide rail is arranged below the door frame and extends to below the deck of the hull.

5. The marine ROV door according to claim 4, wherein the ROV door further comprises a sealing strip and a locking device, wherein the sealing strip is arranged between the door frame and the door panel, and the locking device is used to fix the door panel, and when the ROV door is in the closed state, the locking device fixes the door panel at a specific position of the door frame.

6. The marine ROV door according to claim 5, wherein the ROV door further comprises at least one driving device, wherein the driving device is connected to the door panel and is used to drive the door panel to switch between an open position and a closed position.

7. The marine ROV door according to claim 6, wherein the driving device further comprises a lower door panel driving mechanism, wherein the lower door panel driving mechanism is connected to the lower door panel.

8. The marine ROV door according to claim 7, wherein the driving device further comprises an upper door panel driving mechanism, the upper door panel driving mechanism is connected to the upper door panel, and is used to drive the first upper door panel and the second upper door panel of the upper door panel to move and fold.

9. The marine ROV door according to claim 8, wherein the track further comprises a track body and a guide wheel arranged on the track body, wherein the guide wheel is movably arranged on the inner side of the track body, and when the lower door panel slides downward, the guide wheel guides the lower door panel to move downward and outward, and the lower door panel is separated from the sealing strip during the outward movement.

10. The marine ROV door according to claim 9, wherein the ROV door further comprises at least one limit latch, wherein the limit latch is arranged on one side of the door frame, and when the upper door panel is moved and folded at the upper end of the door frame, the limit latch can fix the upper door panel to keep the ROV door in an open state.

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