A safe boarding transition device for a deep-draft vessel

Abstract

The application relates to the ship technology field and discloses a safe boarding transition device for a deep-type ship, which comprises a ship body, a pedal assembly and a driving assembly. The pedal assembly is located at the rear side of the ship body and provides a force receiving platform for boarding transition. The driving assembly is located at the pedal assembly and drives the pedal assembly to work, so that the inclination angle of the pedal assembly can be adjusted, and one end of the pedal assembly can be lapped on the surface of a wharf. In the application, the pedal frame and the hinge plate are hinged, the lapping plate and the pedal frame are hinged, and the first hydraulic cylinder and the second hydraulic cylinder are matched, so that the pedal frame and the lapping plate are rotated, thereby providing support in the inclination direction for the movement of personnel through the pedal frame, the passing demand of the stable boarding of the ship with different inclination angles is met, and the applicability of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of marine technology, specifically to a safe boarding and transfer device for deep-sea vessels. Background Technology

[0002] Ships are a general term for all kinds of vessels. They are means of transportation that can navigate or anchor in waterways for transport or operations. They have different technical performance, equipment and structural types according to different usage requirements. When boarding a ship, a gangway and a boarding gate are required to allow passengers to board the ship smoothly and safely.

[0003] When ships are docked at piers, their draft changes significantly due to cyclical tidal fluctuations and variations in cargo loading and unloading ballast, causing continuous fluctuations in the vertical height difference between the ship's deck and the pier floor. These significant changes in height cause noticeable tilting of the gangplank erected between the pier and the ship's deck, and in severe conditions, even significant backslopeing. Traditional fixed gangplanks often use conventional step structures, only suitable for fixed angles or small-range angle adjustments. They cannot adapt to different ship types, different tide levels, and the large-angle fluctuations caused by loading and unloading operations, making it difficult to meet the safe and smooth boarding requirements of various docked ships. Therefore, a safe boarding transition device for deep-hulled ships is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a safe boarding and transfer device for deep-sea vessels, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safe boarding and transfer device for deep-sea vessels, comprising: hull; A pedal assembly located at the rear of the hull provides a force-bearing platform for boarding and transition. A drive assembly is located at the pedal assembly. The drive assembly drives the pedal assembly to work and adjusts the tilt angle of the pedal assembly so that one end of the pedal assembly can be attached to the surface of the dock.

[0006] Furthermore, the pedal assembly includes an electric slide rail mounted on the ship's deck. A horizontal plate is mounted on the moving end of the electric slide rail. A hinge plate is rotatably connected to the outer surface of the horizontal plate. A pedal frame is rotatably connected to the other end of the hinge plate. A footboard is rotatably connected to the other end of the pedal frame.

[0007] Furthermore, the drive assembly includes a first hydraulic cylinder and a second hydraulic cylinder. Side plates are fixedly connected to both sides of the bottom of the pedal frame. The first hydraulic cylinder is rotatably installed between the horizontal plate and the side plate at the bottom of the pedal frame, and drives the pedal frame to rotate on the surface of the horizontal plate. The second hydraulic cylinder is rotatably installed between the bottom side plate of the pedal frame and the overlapping plate, and drives the overlapping plate to rotate on the surface of the pedal frame.

[0008] Furthermore, the inside of the pedal frame is equipped with a step plate that rotates through a support shaft, providing a support point for people to walk on.

[0009] Furthermore, an adjustment component is provided on one side of the pedal frame, which can be used to adjust the tilt angle between the step plate and the pedal frame.

[0010] Furthermore, the adjustment assembly includes a first gear sleeved on one end of the support shaft, two fixed blocks are fixedly connected to the outside of the side plate, a lead screw is rotatably connected between the two fixed blocks, a motor is mounted on the outer surface of one of the fixed blocks, the output end of the motor is connected to the lead screw, a threaded block is threaded on the outer surface of the lead screw, a rack is fixedly connected to the top of the threaded block, and the rack is movably engaged with the outer surface of the first gear.

[0011] Furthermore, the rear end of the hull is provided with two support frames, and a guardrail is provided between the two support frames.

[0012] Furthermore, two support blocks are provided on the top outer surface of the hull deck, and a rotating shaft is rotatably connected between the two support blocks. A second gear is fixedly sleeved on the outside of the rotating shaft, and the support frame is fixedly sleeved on the outside of the rotating shaft. A movable strip is fixedly connected to the outer surface of the horizontal plate, and multiple teeth are fixedly connected to the bottom of the movable strip. The outer surface of the teeth is in movable engagement with the outside of the second gear.

[0013] Furthermore, a pressing plate is fixedly connected to the bottom of the moving strip on the side of the tooth. The end of the pressing plate facing the second gear is wedge-shaped. A receiving groove is provided inside the hull deck. A spring is provided between the inner wall of the receiving groove and the support block.

[0014] Furthermore, an L-shaped frame is fixedly connected to the bottom outer surface of the moving bar, and the vertical end of the L-shaped frame is located on the outer side of the second gear facing the hull.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the step frame and the hinge plate are hinged according to the different heights of the ship's deck and the dock plane, and the board and the step frame are hinged. With the cooperation of the first hydraulic cylinder and the second hydraulic cylinder, the step frame and the board are rotated, thereby providing tilt support for the movement of personnel through the step frame, so as to meet the passage requirements of smooth boarding of ships at different tilt angles and improve the applicability of the device.

[0016] 2. In this invention, when the step frame is tilted, the motor drives the lead screw to rotate, the lead screw rotates and drives the rack to move, and the rack and the first gear make the step plate rotate, so that the step plate is in a state parallel to the plane, which facilitates the provision of a force point for people to board the ship.

[0017] 3. In this invention, when the electric slide rail moves the horizontal plate, the moving bar on it moves, and the moving bar drives the teeth on it to rotate the second gear, which causes the support frame to move the guardrail into place. When the pedal assembly is not working, the support frame rotates to support the guardrail, thereby protecting the rear part of the hull. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a front view structural diagram of the pedal assembly of the present invention; Figure 3 This is a bottom view of the pedal assembly of the present invention; Figure 4 This is a partial frontal sectional view of the present invention; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 6 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 7 For the present invention Figure 3 Enlarged structural diagram at point C; Figure 8 For the present invention Figure 4 Enlarged structural diagram at point D; Figure 9 This is a schematic diagram of the first working state structure of the present invention; Figure 10 This is a schematic diagram of the second working state structure of the present invention; Figure 11 This is a schematic diagram of the third working state structure of the present invention.

[0019] In the diagram: 100, hull; 200, horizontal plate; 201, hinge plate; 202, footboard frame; 203, step plate; 204, electric slide rail; 300, first hydraulic cylinder; 301, second hydraulic cylinder; 400, step plate; 500, first gear; 501, rack; 502, lead screw; 503, motor; 600, support frame; 700, moving bar; 701, tooth; 702, second gear; 703, spring; 704, support block; 705, extrusion plate; 706, L-shaped frame. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to the following: Figures 1-11 The present invention provides a technical solution: a safe boarding transition device for deep-sea vessels, including a hull 100 and a step assembly for personnel boarding and passing through. The step assembly is correspondingly installed at the rear of the stern of the hull 100 and can complete the docking operation through extension, retraction and angle adjustment. The step assembly provides a stable and reliable force support platform for the boarding and disembarking of crew members and boarding personnel.

[0022] In this embodiment, the pedal assembly is equipped with an electric slide rail 204 with an electric telescopic drive structure. The electric slide rail 204 is fixedly installed at a preset installation point on the deck of the ship hull 100. A transversely arranged horizontal plate 200 is fixedly installed on the top surface of the movable end of the electric slide rail 204, which can slide back and forth. A hinged plate 201 that can be flipped and adjusted is rotatably hinged to the outer end face of the horizontal plate 200 through a shaft structure. A frame-type pedal frame 202 is rotatably hinged to the other end of the hinged plate 201 away from the horizontal plate 200. A tread plate 203 that can fit against the end face of the dock is rotatably hinged to the end position of the pedal frame 202 away from the hinged plate 201. The various hinge structures cooperate with each other to realize the multi-angle flexible adjustment of the overall pedal structure.

[0023] Specifically, after the ship has completed its berthing and positioning operations at the shore, and with the ship's hull at a draft of 100 mm and the dock's reference height being level and without any height difference, the entire pedal assembly can be smoothly moved outward by the forward extension drive of the electric slide rail 204. Ultimately, the end plate 203 is precisely moved to the position directly above the dock platform, completing the rapid construction of the boarding passage and ensuring that ship personnel can safely and smoothly complete the transition between boarding and disembarking.

[0024] In this embodiment, the hollow area inside the pedal frame 202 is rotatably fitted with a multi-layer stepped plate 400 through a horizontally arranged support shaft. The continuously arranged stepped plates 400 can form a graded passage support surface. The stepped plates 400 provide stable and uniform force support points for people to walk up and down, effectively improving passage safety and comfort.

[0025] In this embodiment, the outer side plate of the pedal frame 202 is equipped with an angle fine-tuning adjustment component, which can be adjusted in real time according to the overall tilt state of the pedal assembly. The adjustment component can precisely control the relative tilt angle between the step plate 400 and the main body of the pedal frame 202 to ensure that the passage surface is always in a reasonable state.

[0026] In this embodiment, the adjustment assembly includes a first gear 500 fixedly sleeved on one end of the support shaft. Two fixed blocks are fixedly welded to the outer surface of the side plate of the pedal frame 202, which are symmetrically distributed vertically. A horizontally arranged lead screw 502 structure is rotatably assembled between the relatively inner sides of the two fixed blocks. A motor 503 providing power output is fixedly installed on the outer end face of one of the fixed blocks. The central output shaft of the motor 503 is fixedly connected to the end of the lead screw 502 to achieve synchronous rotation. A threaded block that can rotate with the lead screw 502 and achieve horizontal linear displacement is threaded onto the outer circular surface of the lead screw 502. A rack 501 structure is fixedly welded to the top surface of the threaded block. The tooth surface of the rack 501 and the outer circular tooth surface of the first gear 500 maintain a precise active meshing state, forming a gear and rack 501 linkage adjustment structure.

[0027] Specifically, when there is a height difference between the hull 100 and the dock, and the entire step assembly is laid out at an angle, in order to eliminate the inconvenience of walking caused by the ramp and ensure that personnel can smoothly board the ship, the motor 503 can be powered on and started. The output shaft of the motor 503 drives the lead screw 502 to rotate synchronously. During the rotation of the lead screw 502, the threaded block on the outside moves linearly along the axis of the lead screw 502 by means of the threaded transmission structure. The moving threaded block drives the top rack 501 to move as a whole. Through the meshing transmission between the rack 501 and the first gear 500, the support shaft is driven to rotate, which in turn drives the step plate 400 to rotate synchronously and adjust the angle. Finally, the passage surface of the step plate 400 is kept in an absolutely horizontal state, continuously providing a stable and reliable force support point for personnel to board and disembark.

[0028] In this embodiment, two sets of vertically arranged support frames 600 are symmetrically installed at the rear end of the hull 100. A detachable guardrail structure is fixedly installed between the top and sides of the two sets of support frames 600, which can form a safety protection barrier when boarding the ship to avoid the risk of personnel falling.

[0029] In this embodiment, two sets of support blocks 704 are symmetrically fixedly installed on the outer surface of the top surface of the deck of the hull 100. A horizontally arranged rotating shaft is rotatably assembled between the relatively inner sides of the two support blocks 704. A second gear 702 that can rotate synchronously with the rotating shaft is fixedly sleeved on the outer circular surface of the rotating shaft. The bottom root of the support frame 600 is fixedly sleeved and fixed to the outside of the rotating shaft to realize the synchronous rotation of the support frame 600 and the rotating shaft. A long strip-shaped moving strip 700 is fixedly welded to the outer bottom surface of the horizontal plate 200. Multiple equidistantly distributed teeth 701 are evenly fixedly arranged on the bottom end face of the moving strip 700. The outer tooth surface of the teeth 701 and the outer circular tooth surface of the second gear 702 are in a movable meshing state to form a rack 501 gear linkage storage structure.

[0030] Specifically, when the electric slide rail 204 drives the horizontal plate 200 to move outward to carry out the construction of the boarding passage, the horizontal plate 200 simultaneously drives the bottom moving bar 700 to move horizontally. During the movement of the moving bar 700, the teeth 701 arranged in the bottom array move synchronously. Through the meshing transmission between the teeth 701 and the second gear 702, the second gear 702 is driven to rotate around the rotating shaft, which in turn drives the support frame 600 fixed outside the rotating shaft to rotate synchronously. Finally, the support frame 600 and the entire guardrail are stably stored and folded to the bottom of the pedal assembly, completely avoiding the space obstruction caused by the guardrail to the boarding passage and reserving sufficient working space for personnel to board the ship smoothly.

[0031] In this embodiment, a pressing plate 705 is fixedly mounted on the bottom end face of the moving bar 700 at a preset position located on the side of the tooth 701. The end face of the pressing plate 705 facing the second gear 702 and the rotating shaft is set as a smooth wedge-shaped inclined surface structure. An adaptive deformation buffer receiving groove is opened inside the deck of the hull 100 at the position below the rotating shaft. A vertical buffer reset spring 703 structure is fixedly mounted between the inner wall of the receiving groove and the bottom end face of the support block 704, forming an adaptive buffer reset mechanism.

[0032] Specifically, when the moving bar 700 drives the teeth 701 to continuously shift and rotates the second gear 702 to its limit position where the guardrail is completely retracted below the pedal assembly, the moving bar 700 will simultaneously drive the side pressing plate 705 to move forward. When the wedge-shaped inclined surface of the pressing plate 705 contacts and adheres to the outer circular surface of the rotating shaft, it can push the rotating shaft downward through the inclined pressing action. The rotating shaft simultaneously drives the bottom support block 704 to compress the spring 703 to produce elastic deformation, causing the second gear 702 to move downward and disengage from the meshing state with the teeth 701. This effectively prevents the second gear 702 from jamming and locking after rotating to its limit position, thus hindering the continuous translational movement of the teeth 701 and the moving bar 700, and ensuring the smooth extension operation of the pedal assembly. Conversely, when the electric slide rail 204 retracts in the opposite direction and drives the horizontal plate 200 to reset, the pressing plate 705 retracts with the moving bar 700 and gradually separates from the surface of the rotating shaft. The compressed spring 703, relying on its own elastic restoring force, pushes the support block 704 and the rotating shaft upward to reset, so that the second gear 702 and the teeth 701 re-engage precisely and restore the ability to perform subsequent linkage operations.

[0033] In this embodiment, an L-shaped frame 706 with an L-shaped cross-section is fixedly welded to the bottom outer surface of the moving bar 700. The vertical straight section of the L-shaped frame 706 is arranged on the inner and outer sides of the second gear 702 facing the center of the hull 100, which can form a limiting support for the rotating shaft and the support frame 600 structure.

[0034] Specifically, when the guardrail is fully extended and in normal safety protection working state, the L-shaped frame 706 is located directly below the pivot. The rigid blocking effect of the L-shaped frame 706 provides limiting support to the bottom of the pivot, effectively resisting external downward pressure loads such as personnel leaning on it and wind pressure, and preventing the pivot and support frame 600 from deflecting and swaying downward under external forces, thus greatly improving the overall structural stability and safety of the guardrail during operation.

[0035] Example 2: Figure 3 , Figures 5-6 and Figure 10As shown, the safe boarding transition device for deep-sea vessels is also equipped with a drive assembly for angle adjustment. The drive assembly is centrally installed at the bottom mounting position of the pedal assembly. The drive assembly can drive the linkage operation of each structure of the pedal assembly through the power output of the drive assembly, and precisely adjust the overall tilt angle of the pedal assembly to adapt to different height difference working conditions, ensuring that the outer end of the pedal assembly can stably overlap and fit against the surface of the dock platform. The drive assembly includes two sets of matching first hydraulic cylinders 300 and second hydraulic cylinders 301. Vertical protective side plates are symmetrically fixed on the left and right sides of the bottom of the pedal frame 202. The two ends of the first hydraulic cylinder 300 are respectively rotatably hinged between the bottom surface of the horizontal plate 200 and the side plate at the bottom of the pedal frame 202. The extension and retraction of the first hydraulic cylinder 300 can drive the pedal frame 202 to rotate and swing relative to the horizontal plate 200. The two ends of the second hydraulic cylinder 301 are respectively rotatably hinged between the bottom side plate of the pedal frame 202 and the end plate 203. The extension and retraction of the second hydraulic cylinder 301 can drive the end plate 203 to rotate and swing independently relative to the pedal frame 202.

[0036] Specifically, when factors such as tidal changes and changes in ship load cause an increase in the overall draft of the hull 100 and a decrease in the deck height of the hull 100 compared to the dock platform height, the electric slide rail 204 is first energized. The electric slide rail 204 drives the transverse plate 200 to slide smoothly outward, moving the entire pedal assembly from above the deck of the hull 100 and extending it to the outer area of ​​the dock. Then, the piston rod of the first hydraulic cylinder 300 is controlled to extend outward. The first hydraulic cylinder 300 adaptively rotates between the transverse plate 200 and the side plate of the pedal frame 202 at an appropriate angle. As the first hydraulic cylinder 300 continues to extend... The platform frame 202 is long, and the pusher plate 202 rotates upward relative to the horizontal plate 200 to adjust the overall slope of the platform assembly. Then, the piston rod of the second hydraulic cylinder 301 is controlled to retract. The second hydraulic cylinder 301 adapts to the hinge position between the platform frame 202 and the platform 203. As the second hydraulic cylinder 301 continues to retract, it pulls the platform 203 to rotate and finely adjust relative to the platform frame 202, so that the top surface of the platform 203 is completely parallel to the plane of the dock platform. After the ship is stably docked, the platform 203 can be smoothly attached to the dock surface to build a flat and safe boarding passage.

[0037] Example 3: As Figure 3 , Figures 5-6 and Figure 11As shown, the safe boarding transition device for deep-sea vessels is also equipped with a drive assembly for angle adjustment. The drive assembly is centrally installed at the bottom mounting position of the pedal assembly. The drive assembly can drive the linkage operation of each structure of the pedal assembly through the power output of the drive assembly, and precisely adjust the overall tilt angle of the pedal assembly to adapt to different height difference working conditions, ensuring that the outer end of the pedal assembly can stably overlap and fit against the surface of the dock platform. The drive assembly includes two sets of matching first hydraulic cylinders 300 and second hydraulic cylinders 301. Vertical protective side plates are symmetrically fixed on the left and right sides of the bottom of the pedal frame 202. The two ends of the first hydraulic cylinder 300 are respectively rotatably hinged between the bottom surface of the horizontal plate 200 and the side plate at the bottom of the pedal frame 202. The extension and retraction of the first hydraulic cylinder 300 can drive the pedal frame 202 to rotate and swing relative to the horizontal plate 200. The two ends of the second hydraulic cylinder 301 are respectively rotatably hinged between the bottom side plate of the pedal frame 202 and the end plate 203. The extension and retraction of the second hydraulic cylinder 301 can drive the end plate 203 to rotate and swing independently relative to the pedal frame 202.

[0038] Unlike Example 2, when factors such as tidal changes and changes in ship load cause a decrease in the overall draft of the hull 100 and a deck height higher than the dock platform height, the electric slide rail 204 is first energized. The electric slide rail 204 drives the horizontal plate 200 to slide smoothly outward, moving the entire pedal assembly from above the deck of the hull 100 and extending it to the outer area of ​​the dock. Then, the piston rod of the first hydraulic cylinder 300 is controlled to retract. The first hydraulic cylinder 300 adaptively rotates between the horizontal plate 200 and the side plate of the pedal frame 202 at an appropriate angle. As the first hydraulic cylinder 300... As the platform continues to retract, the pull plate frame 202 rotates downward relative to the horizontal plate 200, adjusting the overall slope of the platform assembly downward. Then, the piston rod of the second hydraulic cylinder 301 extends outward. The second hydraulic cylinder 301 adapts to the hinge position between the platform frame 202 and the ramp 203. As the second hydraulic cylinder 301 continues to extend, it pushes the ramp 203 to rotate and finely adjust relative to the platform frame 202, ultimately making the top surface of the ramp 203 completely parallel to the plane of the dock platform. After the ship is stably docked, the ramp 203 can be smoothly attached to the dock surface, creating a flat and safe boarding passage.

[0039] Working principle: When the hull 100 is docked, when the height of the hull 100 is the same as the height of the dock, the electric slide rail 204 drives the pedal assembly to move, so that the boarding plate 203 moves to the top of the dock, and the ship personnel can board the ship for the transition work. When the height of the hull 100 is lower than the height of the dock due to water level or other factors, the electric slide rail 204 is activated, which moves the horizontal plate 200 away from the deck of the hull 100. Then, the first hydraulic cylinder 300 extends and rotates between the horizontal plate 200 and the step frame 202. As the first hydraulic cylinder 300 extends, the step frame 202 rotates between the horizontal plate 200 and the step plate 202, thereby tilting the angle of the step assembly upward. Then, the second hydraulic cylinder 301 retracts and rotates between the step frame 202 and the ramp 203. As the second hydraulic cylinder 301 retracts, the ramp 203 rotates between the step frame 202 and the step frame 202, so that the ramp 203 is parallel to the dock plane. When the ship docks at the dock, the step is attached to the dock. When the height of the hull 100 is lower than the height of the dock due to water level or other factors, the electric slide rail 204 is activated, which moves the horizontal plate 200 away from the deck of the hull 100. Then, the first hydraulic cylinder 300 is shortened, rotating between the horizontal plate 200 and the step frame 202. As the first hydraulic cylinder 300 shortens, the step frame 202 rotates between the horizontal plate 200 and the step plate 202, thereby tilting the angle of the step assembly downward. Then, the second hydraulic cylinder 301 is extended, rotating between the step frame 202 and the ramp 203. As the second hydraulic cylinder 301 extends, the ramp 203 rotates between the step frame 202 and the step frame 202, so that the ramp 203 is parallel to the dock plane. When the ship docks on the dock, the step is attached to the dock. When the pedal assembly is tilted, in order to facilitate the transition for personnel to board the boat, the motor 503 works, the motor 503 drives the lead screw 502 to rotate, the lead screw 502 rotates and drives the threaded block on it to move, the threaded block drives the rack 501 to move, the rack 501 meshes with the first gear 500, so that the step plate 400 rotates, so that the step plate 400 is in a state parallel to the plane, which facilitates the provision of a force point for personnel to board the boat. When the horizontal plate 200 moves, it causes the moving bar 700 on it to move. The moving bar 700 moves, driving the gear 701 to move. The gear 701 meshes with the second gear 702, causing the second gear 702 to rotate. The rotation of the second gear 702 causes the support frame 600 to rotate, retracting the guardrail below the pedal assembly. After the moving bar 700 moves the gear 701 and rotates the second gear 702 to its retracted position below the pedal assembly, it drives the pressing plate 705 on it to move. When the inclined surface of the pressing plate 705 contacts the rotating shaft, the pressing plate 705 presses the rotating shaft downwards, causing the support block 704 to move downwards. This causes the spring 703 to compress and deform until the second gear 702 disengages from the surface of the gear 701. To prevent the second gear 702 from being unable to rotate when it is in the retracted state, thus obstructing the movement of the teeth 701 and preventing the moving bar 700 from continuing to move, the electric slide rail 204 is retracted. When the pressing plate 705 disengages from the surface of the rotating shaft, the spring force of the spring 703 drives the support block 704 to reset, causing the second gear 702 to mesh with the teeth 701. Under the reverse driving force of the teeth 701, the support frame 600 is lifted, thereby protecting the rear side of the hull 100 through the guardrail. When the guardrail is in protective function, the L-shaped frame 706 is located below the rotating shaft. The L-shaped frame 706 blocks the downward movement of the rotating shaft, preventing the guardrail from being pressed down by downward pressure and affecting the stability of the guardrail.

[0040] The operation of the aforementioned electrical components is electrically connected to the ship's internal control system. The control system is an existing structure, and the control circuit can be implemented by a person skilled in the art through simple programming. It is common knowledge in the field, and is only used without modification. Therefore, the control method and circuit connection will not be described in detail.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safe boarding and transfer device for deep-sea vessels, characterized in that, include: Hull(100); A footboard assembly located at the rear of the hull (100) provides a force-bearing platform for boarding transition. A drive assembly is located at the pedal assembly. The drive assembly drives the pedal assembly to work and adjusts the tilt angle of the pedal assembly so that one end of the pedal assembly can be attached to the surface of the dock.

2. The safe boarding and transfer device for deep-sea vessels according to claim 1, characterized in that, The pedal assembly includes an electric slide rail (204) mounted on the deck of the hull (100). A horizontal plate (200) is mounted on the moving end of the electric slide rail (204). A hinge plate (201) is rotatably connected to the outer surface of the horizontal plate (200). A pedal frame (202) is rotatably connected to the other end of the hinge plate (201). A step plate (203) is rotatably connected to the other end of the pedal frame (202).

3. A safe boarding and transfer device for deep-sea vessels according to claim 2, characterized in that, The drive assembly includes a first hydraulic cylinder (300) and a second hydraulic cylinder (301). Side plates are fixedly connected to both sides of the bottom of the pedal frame (202). The first hydraulic cylinder (300) is rotatably installed between the horizontal plate (200) and the side plate at the bottom of the pedal frame (202). The first hydraulic cylinder (300) drives the pedal frame (202) to rotate on the surface of the horizontal plate (200). The second hydraulic cylinder (301) is rotatably installed between the bottom side plate of the pedal frame (202) and the overlapping plate. The second hydraulic cylinder (301) drives the overlapping plate to rotate on the surface of the pedal frame (202).

4. A safe boarding and transfer device for deep-sea vessels according to claim 2, characterized in that, The inside of the pedal frame (202) is provided with a step plate (400) that rotates through a support shaft, and the step plate (400) provides a support point for people to walk.

5. A safe boarding and transfer device for deep-sea vessels according to claim 5, characterized in that, An adjustment component is provided on one side of the pedal frame (202) to adjust the tilt angle between the step plate (400) and the pedal frame (202).

6. A safe boarding and transfer device for deep-sea vessels according to claim 5, characterized in that, The adjustment assembly includes a first gear (500) sleeved on one end of the support shaft. Two fixed blocks are fixedly connected to the outside of the side plate. A lead screw (502) is rotatably connected between the two fixed blocks. A motor (503) is installed on the outer surface of one of the fixed blocks. The output end of the motor (503) is connected to the lead screw (502). A threaded block is threaded on the outer surface of the lead screw (502). A rack (501) is fixedly connected to the top of the threaded block. The rack (501) is movably meshed with the outer surface of the first gear (500).

7. A safe boarding and transfer device for deep-sea vessels according to claim 1, characterized in that, The hull (100) has two support frames (600) at its rear end, and a guardrail is provided between the two support frames (600).

8. A safe boarding and transfer device for deep-sea vessels according to claim 7, characterized in that, Two support blocks (704) are provided on the top outer surface of the deck of the hull (100). A rotating shaft is rotatably connected between the two support blocks (704). A second gear (702) is fixedly sleeved on the outside of the rotating shaft. A support frame (600) is fixedly sleeved on the outside of the rotating shaft. A movable strip (700) is fixedly connected to the outer surface of the horizontal plate (200). A plurality of teeth (701) are fixedly connected to the bottom of the movable strip (700). The outer surface of the teeth (701) is in active mesh with the outside of the second gear (702).

9. A safe boarding and transfer device for deep-sea vessels according to claim 8, characterized in that, The bottom of the moving bar (700) is fixedly connected to the side of the tooth (701) with an extrusion plate (705). The end of the extrusion plate (705) facing the second gear (702) is set with a wedge-shaped surface. The interior of the deck of the hull (100) is provided with a receiving groove. A spring (703) is provided between the inner wall of the receiving groove and the support block (704).

10. A safe boarding and transfer device for deep-sea vessels according to claim 8, characterized in that, An L-shaped frame (706) is fixedly connected to the bottom outer surface of the moving bar (700), and the vertical end of the L-shaped frame (706) is located on the outside of the second gear (702) facing the hull (100).

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