Ship stern vertical lifting type intelligent boarding ladder

Abstract

The invention discloses a ship stern vertical lifting type intelligent boarding ladder, and relates to the field of ship equipment, the ship stern vertical lifting type intelligent boarding ladder comprises a lifting assembly, the lifting assembly is used for controlling the boarding height, the top of the lifting assembly is provided with a first boarding mechanism, and one side of the first boarding mechanism is connected with a second boarding mechanism. The stable and safe channel from the shore to the ship is constructed through cooperative unfolding of multi-stage linkage structures such as the shear fork frames, the rotating rods, the inclined plates, the ladder plates and the pedals, the shear fork frames are preliminarily unfolded, the inclined plates are driven to be sequentially unfolded, a continuous platform is formed through the connecting plates, and then a stable bearing face is provided for passengers; the center rod drives the second boarding mechanism to unfold, the ladder plates are pushed to slowly unfold outwards through the multiple linkage rods, the push rods and the crank system, the pedals in the ladder plates are sequentially overturned to be in the horizontal state, a smooth and safe stepping path is achieved, fast storage and folding can be achieved after boarding is completed, the structure is compact, and operation is efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of ship equipment, and particularly to a vertically liftable intelligent boarding ladder for the stern of a ship. Background Art

[0002] A liftable boarding ladder is a boarding device that realizes automatic height adjustment through mechanical devices. Its core function is to dynamically adapt to changes in the draft of the ship, differences in quay heights, or tidal fluctuations, ensuring the safe and convenient boarding and alighting of personnel.

[0003] However, in the prior art, as an important device for boarding and alighting ships, liftable boarding ladders usually require dedicated fixed installation areas to be reserved on the ship's deck. These areas are mostly set at the ship's side or the stern. Since the space on the ship's deck itself is very limited, especially on medium and small-sized ships, the fixed installation of the boarding ladder occupies too much deck area, directly affecting the reasonable layout and use of other key devices. In addition, the design of fixed lift boarding ladders is often customized for specific berths and ships of specific sizes, lacking flexibility and versatility. This means that when the conditions of the dock where the ship docks change, or the size of the ship docking does not match the design of the boarding ladder, the fixed device is difficult to adapt to diverse berthing requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a vertically liftable intelligent boarding ladder for the stern of a ship to solve the problems of inconvenient storage, lack of flexibility and versatility proposed in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A vertically liftable intelligent boarding ladder for the stern of a ship, including a lifting component for controlling the boarding height. A first boarding mechanism is installed at the top of the lifting component, and a second boarding mechanism is connected to one side of the first boarding mechanism. The first boarding mechanism includes a base. Both sides of the base are fixedly connected with first support rods. The top ends of the first support rods are rotatably connected with pulleys. Two second support rods are symmetrically and fixedly connected to the side wall of the base. A plurality of rotating rods are arranged between the two second support rods. The two ends of the rotating rods are rotatably connected with scissor frames, and an inclined plate is fixedly connected to the outer surface of the middle part of the rotating rods. The second boarding mechanism includes two fixing plates. A connecting plate is fixedly connected to the top side wall of the fixing plates. A guiding hole is opened in the middle of the connecting plate, and a roller is slidably connected inside the guiding hole. A central rod is rotatably connected between the two fixing plates. Second linkage rods are fixedly connected to both ends of the central rod. First linkage rods are fixedly connected to the bottom ends of the two second linkage rods. A crank is fixedly connected to the bottom end of the fixing plates. A pushing rod is rotatably connected to the side wall of the fixing plates. A ladder plate is rotatably connected between the two pushing rods.

[0006] Preferably, a first driving motor is installed on the side wall of the second support rod. The output end of the first driving motor is fixedly connected to a driving rod, and the driving rod is fixedly connected to the scissors frame. A sliding block is slidably connected inside the second support rod. One end of the sliding block is rotatably connected to a rotating rod, and a connecting plate is rotatably connected between the two inclined plates.

[0007] Preferably, one end of the rotating rod is rotatably connected to a connecting block. Connecting frames are fixedly connected to the side walls of the two connecting blocks, and the side walls of the connecting frames are fixedly connected to the fixing plate. A hanging ring is suspended at one end of the connecting block, and a steel wire rope is fixedly connected to the outer surface of the hanging ring. The steel wire rope passes through a pulley, and a winch is fixedly connected to the side wall of the first support rod. The steel wire rope is wound around the surface of the winch.

[0008] Preferably, a fixing frame is fixedly connected to the side wall of one of the fixing plates. A worm is rotatably connected inside the fixing frame, and a second driving motor is installed on the top of the fixing frame. The output end of the second driving motor is fixedly connected to the worm.

[0009] Preferably, a worm gear is fixedly connected to the outer surface of one end of the central rod. The worm gear is meshed with the worm. A second connecting rod is fixedly connected between the tops of the two first linkage rods, and a third connecting rod is fixedly connected between the bottoms of the two first linkage rods.

[0010] Preferably, the two ends of the third connecting rod are respectively rotatably connected to the middle parts of the two push rods, and a first connecting rod is fixedly connected between the bottoms of the two push rods.

[0011] Preferably, a support leg is fixedly connected to the bottom end of the ladder board. A sensor is installed inside the support leg. A pedal is fixedly connected between the two ladder boards. The top end of the pedal is rotatably connected to a roller.

[0012] Preferably, the lifting assembly includes a bottom plate. A frame is fixedly connected to the center of the top of the bottom plate. A hydraulic cylinder is installed in the center of the inside of the frame. The top of the hydraulic cylinder is fixedly connected to a lifting frame, and the top of the lifting frame is fixedly connected to the bottom of the base. A slide rail is fixedly connected to the side wall of the frame. A guide block is slidably connected to the surface of the slide rail, and the guide block is fixedly connected to the inner wall of the lifting frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, through the coordinated deployment of multi-stage linkage structures such as the scissor lift, rotating rod, inclined plate, ladder plate, and pedal, a stable and safe passage from the shore to the ship is constructed. Initially, the scissor lift is deployed, driving the inclined plate to be deployed in sequence and forming a continuous platform through the connecting plate, providing a stable load-bearing surface for passengers. Subsequently, the central rod drives the second boarding mechanism to unfold, and through multiple sets of linkage rods, push rods, and crank systems, the ladder plate is slowly extended outward, and the internal pedals of the ladder plate are turned into a horizontal state in sequence, realizing a smooth and safe stepping path. It can be quickly retracted and folded after boarding, with a compact structure and efficient operation. It is applicable to the operation requirements of different ship types and the height difference between the dock and the ship, and greatly improves the safety, comfort, and intelligent level during the boarding process; 2. In the present invention, the coordinated deployment of the scissor lift and the inclined plate is achieved through two first drive motors, forming a stable and flat load-bearing platform. Under the cooperation of the wire rope system with the winch and pulley for guiding, the position and tension of the connecting block are dynamically adjusted to ensure the smooth and symmetric movement of the rotating rod, significantly enhancing the structural stability and anti-interference ability of the platform. By setting the connecting plate to strengthen the connection of the inclined plate, the overall load-bearing and continuity of the platform are enhanced. It can be connected to an intelligent control module, combined with sensors and controllers, to realize real-time monitoring and closed-loop control of the states of key components, further improving the automation, safety, and operation accuracy during the boarding process; 3. In the present invention, the synchronous transmission of the multi-stage linkage mechanism is realized by driving the worm and worm gear through the second drive motor, ensuring the structural coordination and consistent movement during the deployment of components such as the ladder plate. The cooperation of the guide hole and the roller effectively limits the movement trajectory of the ladder plate, avoiding deviation and shaking, and ensuring the deployment accuracy and stability. Sensors are configured on the support legs at the end of the ladder plate to monitor the grounding state in real time, and combined with the lifting component, automatic height adjustment is realized to adapt to the height difference between different docks or ships. The overall structure has good self-adaptability and intelligent control ability, significantly improving the reliability, versatility, and operation safety of the boarding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of a vertical lifting type intelligent boarding ladder for the stern of a ship according to the present invention; Figure 2 is the split structural schematic diagram of the second boarding mechanism in a vertical lifting type intelligent boarding ladder for the stern of a ship according to the present invention; Figure 3 is the partial structural schematic diagram of the second boarding mechanism in a vertical lifting type intelligent boarding ladder for the stern of a ship according to the present invention; Figure 4 is the split structural schematic diagram of the first boarding mechanism in a vertical lifting type intelligent boarding ladder for the stern of a ship according to the present invention; Figure 5 is the partial structural schematic diagram of the first boarding mechanism in a vertical lifting type intelligent boarding ladder for the stern of a ship according to the present invention; Figure 6 This is a schematic side view structure of the first boarding mechanism in a vertically liftable intelligent boarding ladder for the stern of a ship according to the present invention; Figure 7 This is a schematic structure diagram of the connecting plate, inclined plate and scissor frame of a vertically liftable intelligent boarding ladder for the stern of a ship according to the present invention; Figure 8 This is a schematic structure diagram of the lifting assembly in a vertically liftable intelligent boarding ladder for the stern of a ship according to the present invention.

[0015] In the figure: 1. Lifting assembly; 11. Guide block; 12. Bottom plate; 13. Frame; 14. Slide rail; 15. Hydraulic cylinder; 16. Lifting frame; 2. First boarding mechanism; 21. First support rod; 211. Pulley; 212. Winch; 22. Base; 23. First driving motor; 231. Driving rod; 24. Second support rod; 25. Rotating rod; 251. Connecting plate; 252. Inclined plate; 26. Scissor frame; 261. Sliding block; 27. Connecting block; 28. Hanging ring; 281. Steel wire rope; 29. Connecting frame; 3. Second boarding mechanism; 31. Connecting plate; 311. Guide hole; 312. Roller; 32. Ladder plate; 321. Support leg; 33. Pedal; 34. First connecting rod; 35. Pushing rod; 36. Fixed plate; 361. Crank; 37. Fixed frame; 371. Worm; 372. Worm gear; 38. First linkage rod; 381. Second connecting rod; 382. Third connecting rod; 39. Second linkage rod; 391. Central rod; 4. Second driving motor. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment 1: Refer to Figures 1 - 7 As shown: A vertically liftable intelligent boarding ladder for the stern of a ship includes a lifting assembly 1. The lifting assembly 1 is used to control the boarding height. A first boarding mechanism 2 is installed on the top of the lifting assembly 1, and a second boarding mechanism 3 is connected to one side of the first boarding mechanism 2; The first boarding mechanism 2 includes a base 22. Both sides of the base 22 are fixedly connected with first support rods 21. The top ends of the first support rods 21 are rotatably connected with pulleys 211. Two second support rods 24 are symmetrically and fixedly connected to the side wall of the base 22. A plurality of rotating rods 25 are arranged between the two second support rods 24. The two ends of the rotating rods 25 are rotatably connected with scissor frames 26. An inclined plate 252 is fixedly connected to the outer surface of the middle part of the rotating rod 25; The second boarding mechanism 3 includes two fixed plates 36. A connecting plate 31 is fixedly connected to the top side wall of the fixed plate 36. A guiding hole 311 is formed in the middle of the connecting plate 31. A roller 312 is slidably connected inside the guiding hole 311. A central rod 391 is rotatably connected between the two fixed plates 36. Both ends of the central rod 391 are fixedly connected with second linkage rods 39. The bottom ends of the two second linkage rods 39 are both fixedly connected with first linkage rods 38. A crank 361 is fixedly connected to the bottom end of the fixed plate 36. A push rod 35 is rotatably connected to the side wall of the fixed plate 36. A ladder plate 32 is rotatably connected between the two push rods 35.

[0018] In this embodiment, when performing the boarding operation, first, the scissor lift 26 between the two second support rods 24 is used to realize the initial unfolding action. The scissor lift 26 gradually unfolds under the action of the driving device. During the unfolding process, it will synchronously drive a plurality of rotating rods 25 connected thereto to rotate synchronously. An inclined plate 252 is provided between each pair of rotating rods 25. These inclined plates 252 are stacked in a folded and superimposed state in the initial state. As the rotating rods 25 gradually rotate, each inclined plate 252 will unfold accordingly and gradually change from a vertical or inclined state to a nearly horizontal flattened state.

[0019] During the unfolding process, each unfolded inclined plate 252 and the connecting plate 251 can form an integral flat platform structure after the rotation is completed. This platform structure can serve as a stable load-bearing surface during the boarding process, ensuring that passengers can walk smoothly from the dock to the hull, effectively improving the safety and comfort during boarding.

[0020] Immediately afterwards, as all the inclined plates 252 are unfolded, the synchronous unfolding of the second boarding mechanism 3 is started. This process uses the rotation of the central rod 391 as the power source. The central rod 391 rotates under the drive of the power drive device, thereby driving the two second linkage rods 39 connected to its two ends to start rotating. The rotation of the two second linkage rods 39 will further drive the first linkage rods 38 connected thereto to rotate, forming a multi-linkage structural transmission path.

[0021] Under the driving effect of the multi-stage linkage, the bottom end of the first linkage rod 38 gradually moves forward and applies a continuous thrust to the connected push rod 35. One end of the push rod 35 is connected to the fixed crank 361, enabling it to rotate around the center point of the crank 361. During this rotation process, the push rod 35 generates an oblique movement, thereby driving the ladder plate 32 connected thereto to start unfolding slowly.

[0022] The ladder board 32 is initially in a vertically folded state and begins to gradually unfold under the diagonal drive of the push rod 35. At the same time, under the structural guidance, the multiple treads 33 located inside the ladder board 32 also gradually change from the vertical state to the inclined state as the ladder board 32 unfolds. Ensure that each tread 33 presents a stable horizontal plane after final unfolding, facilitating passengers to board the ship step by step.

[0023] Finally, the entire boarding mechanism is integrally unfolded under the coordinated cooperation of the scissor lift 26, the inclined plate 252, the ladder board 32 and the treads 33, providing a stable passage from the shore to the ship for passengers. This not only improves the boarding efficiency, but also enhances the safety and controllability of the overall structure during use. Moreover, when not in use, it can be conveniently and quickly stored and folded, which is not only suitable for different types of ships, but also reduces the occupied space.

[0024] Embodiment 2: Figure 2 and Figure 3 As shown, a first drive motor 23 is installed on the side wall of the second support rod 24. The output end of the first drive motor 23 is fixedly connected to a drive rod 231. The drive rod 231 is fixedly connected to the scissor lift 26. A sliding block 261 is slidably connected to the inner side of the second support rod 24. One end of the sliding block 261 is rotatably connected to a rotating rod 25. An adapter plate 251 is rotatably connected between the two inclined plates 252.

[0025] One end of the rotating rod 25 is rotatably connected to a connecting block 27. Connecting frames 29 are fixedly connected to the side walls of the two connecting blocks 27. The side wall of the connecting frame 29 is fixedly connected to a fixing plate 36. A hanging ring 28 is hung at one end of the connecting block 27. A steel wire rope 281 is fixedly connected to the outer surface of the hanging ring 28. The steel wire rope 281 passes through a pulley 211. A winch 212 is fixedly connected to the side wall of the first support rod 21. The steel wire rope 281 is wound around the surface of the winch 212.

[0026] In this embodiment, during the process of controlling the unfolding of the scissor lift 26 and the inclined plate 252, by synchronously controlling the operation of the two first drive motors 23, the linkage drive of the two drive rods 231 is realized, and then the scissor lift 26 connected thereto is driven to unfold cooperatively. As the scissor lift 26 unfolds, the entire platform structure gradually rises and unfolds stably, providing a reliable bearing foundation for subsequent operations.

[0027] At the same time, the multiple inclined plates 252 installed on the scissor lift 26 also gradually transition from the initial inclined state to an approximately horizontal state, forming a stable and reliable platform. During this process, precise docking is achieved between each pair of inclined plates 252 through the provided adapter plate 251. On the one hand, the adapter plate 251 enhances the flatness and continuity of the overall structure, and on the other hand, it also improves the load-bearing capacity and structural stability of the platform.

[0028] Furthermore, during the gradual unfolding of the scissor frame 26, the connecting block 27 installed at its end will also be synchronously pulled by the steel wire rope 281 and move. One end of the steel wire rope 281 is fixed to the connecting block 27, and the other end is wound around a drum controlled by a winch 212 and is guided along a path through a pulley 211. Through the orderly winding and unwinding of the winch 212, not only can the telescopic length of the steel wire rope 281 be flexibly controlled, but also during the unfolding or retracting process of the rotating rod 25, the position and tension of the connecting block 27 can be adjusted in real time, thereby playing an effective role in traction and support.

[0029] Under the guiding cooperation of the pulley 211, the entire steel wire rope 281 transmission system can achieve a reasonable distribution of force and direction correction, enabling the rotating rod 25 to maintain the stability and symmetry of movement during the unfolding process, and further reducing the risk of platform shaking caused by external force disturbance or load eccentricity.

[0030] In addition, this mechanism can further expand the intelligent control module as needed. By using sensors to detect the tilt angle, driving state, and rope tension, combined with a PLC or embedded control system, real-time monitoring and closed-loop adjustment of the dynamic states of the scissor frame 26, the tilt plate 252, and the steel wire rope 281 can be achieved, thereby realizing automatic unfolding and folding operations with higher precision and higher safety levels.

[0031] Embodiment 3: As shown in Figures 4 - 8 One side wall of one of the fixing plates 36 is fixedly connected with a fixing frame 37. Inside the fixing frame 37, a worm 371 is rotatably connected. At the top of the fixing frame 37, a second driving motor 4 is installed. The output end of the second driving motor 4 is fixedly connected with the worm 371. One end of the central rod 391 is fixedly connected with a worm gear 372 on its outer surface. The worm gear 372 is meshed with the worm 371. A second connecting rod 381 is fixedly connected between the tops of the two first linkage rods 38, and a third connecting rod 382 is fixedly connected between the bottoms of the two first linkage rods 38. The two ends of the third connecting rod 382 are respectively rotatably connected to the middle parts of the two push rods 35. A first connecting rod 34 is fixedly connected between the bottoms of the two push rods 35. The bottom end of the ladder plate 32 is fixedly connected with a support leg 321. A sensor is installed inside the support leg 321. A pedal 33 is fixedly connected between the two ladder plates 32. The top end of the pedal 33 is rotatably connected with a roller 312. The lifting assembly 1 includes a bottom plate 12. In the center of the top of the bottom plate 12, a frame 13 is fixedly connected. In the center of the inside of the frame 13, a hydraulic cylinder 15 is installed. The top of the hydraulic cylinder 15 is fixedly connected with a lifting frame 16. The top of the lifting frame 16 is fixedly connected with the bottom of the base 22. A slide rail 14 is fixedly connected to the side wall of the frame 13. A guide block 11 is slidably connected to the surface of the slide rail 14. The guide block 11 is fixedly connected to the inner wall of the lifting frame 16.

[0032] In this embodiment, the driving of the second driving motor 4 will not only drive the worm 371 to rotate, but also the worm 371 and the worm wheel 372 will mesh with each other. When the worm 371 rotates, a force will be applied to the worm wheel 372, thereby driving the worm wheel 372 to rotate synchronously. The rotation of the worm wheel 372 further drives the rotation of the center rod 391, and the center rod 391 is fixedly connected to the second linkage rod 39, so that the second linkage rod 39 starts to rotate under the drive of the center rod 391. The rotation of the second linkage rod 39 will also drive the third connecting rod 382 connected thereto to be linked, and the third connecting rod 382 is connected to the two first linkage rods 38 through both ends, so as to realize the synchronous rotation of the two first linkage rods 38. With the help of this structural arrangement, the two first linkage rods 38 can be effectively kept running synchronously during the transmission process, thereby avoiding the problem of structural incoordination caused by deviation.

[0033] During the rotation of the first linkage rod 38, the push rod 35 hinged thereto will be further driven to rotate. Since the two push rods 35 are respectively connected to the two first linkage rods 38 and the third connecting rod 382, the first connecting rod 34 is used to realize the synchronous rotation of the two push rods 35, thereby ensuring the consistency and stability of the subsequent structural actions. This multi-stage linkage structural design improves the synchronization and coordination of the mechanism operation.

[0034] When the ladder plate 32 starts to move outward, the guide hole 311 will slide with the matching roller 312. The roller 312 limits and guides the moving track of the ladder plate 32 by sliding with the guide hole 311, effectively avoiding the ladder plate 32 from deflecting or shaking during the deployment process, thereby ensuring that the ladder plate 32 can be stably deployed along the predetermined path, so that the support leg 321 at the end of the ladder plate 32 can be stably deployed toward the ground.

[0035] After the ladder 32 is fully unfolded, a sensor is provided at the bottom of the support leg 321 to detect in real time whether it is in reliable contact with the ground. When the sensor detects that the support leg 321 has not yet touched the ground, or the ground is uneven and the contact is unstable, the system will feedback information to the control module, and the lifting component 1 will make adjustments to accurately control the height of the support leg 321 through the lifting action, thereby adapting to the ship deck or dock platform with different height differences. This automatic adaptation mechanism greatly improves the versatility and intelligence level of the device in different operating scenarios.

[0036] In terms of the lifting control of the overall device, the hydraulic driving force provided by the hydraulic cylinder 15 can drive the lifting frame 16 connected thereto to move up and down in the vertical direction. The lifting frame 16 is connected to the base 22. Therefore, when the lifting frame 16 moves up and down, it will also drive the entire base 22 to move up and down, thereby adjusting the overall height of the boarding device to meet the different height requirements during passenger boarding or disembarking. At the same time, to prevent deviation or skew during the lifting process, the lifting frame 16 is also connected to the guide block 11, and the guide block 11 will slide along the surface of the slide rail 14 fixedly arranged on the device body during the lifting process. Through the guiding cooperation between the guide block 11 and the slide rail 14, it not only plays a role in restricting the direction of the lifting action, but also greatly improves the stability and reliability of the operation of the entire system.

[0037] Usage method and working principle of this device: During the boarding operation, when controlling the unfolding of the rotating rod 25 and the inclined plate 252, one of the driving rods 231 can be driven to rotate by the first driving motor 23. When the two first driving motors 23 operate simultaneously, the two driving rods 231 will synchronously drive the scissor lift 26 to unfold. The unfolding of the scissor lift 26 drives the rotation of multiple rotating rods 25 located between the two second support rods 24, and then the inclined plates 252 on each rotating rod 25 are gradually unfolded and turned into a lying state. Finally, multiple originally folded inclined plates 252 are spliced into a whole, providing a stable support surface for boarding.

[0038] While the scissor lift 26 is unfolding, multiple inclined plates 252 gradually change from an inclined state to a horizontal state and are spliced with each other through the connecting plates 251 provided thereon, further enhancing the stability of the overall structure. At the same time, the connecting block 27 will also be controlled by the steel wire rope 281 during the unfolding process. Through the winding and releasing of the steel wire rope 281 by the winch 212 and under the guidance of the pulley 211, it can play a role in traction and stability when the scissor lift 26 unfolds, avoiding shaking during the boarding process.

[0039] As the inclined plate 252 unfolds, the unfolding of the second boarding mechanism 3 can be synchronously controlled. During this process, the second driving motor 4 drives the worm 371 to rotate, the worm 371 drives the worm wheel 372 to rotate, and then drives the central rod 391 to rotate. The two second linkage rods 39 are driven to rotate by the central rod 391, and then the first linkage rod 38 is driven to rotate synchronously. The setting of the third connecting rod 382 ensures the synchronism of the two first linkage rods 38. Under this drive, the bottom end of the first linkage rod 38 exerts a force on the push rod 35, causing it to rotate around the crank 361 and tilt.

[0040] Driven by the combined action of the first linkage rod 38 and the third connecting rod 382, the push rod 35 drives the two push rods 35 to rotate synchronously through the first connecting rod 34, thereby driving the ladder plate 32 to rotate from the vertical state to an appropriate angle. At this time, the pedal 33 inside the ladder plate 32 will be converted to a horizontal state, facilitating the passage of passengers. While the ladder plate 32 rotates, the guiding hole 311 on it slides inside the roller 312, thereby restricting the movement trajectory of the ladder plate 32 and ensuring that its supporting leg 321 accurately contacts the ground.

[0041] The sensor provided at the bottom of the supporting leg 321 can sense whether it contacts the ground, and adjust the height of the ladder plate 32 through the lifting assembly 1 to adapt to different types of ships and docks.

[0042] In addition, through the hydraulic driving force provided by the hydraulic cylinder 15, the lifting frame 16 can be controlled to move up and down, thereby driving the base 22 to achieve overall lifting to adjust the height of the boarding platform. During the lifting process, the guiding block 11 always slides along the surface of the slide rail 14, ensuring smooth lifting and avoiding tilting or shaking.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vertically lifting intelligent boarding ladder for the stern of a ship, comprising a lifting assembly (1), and the lifting assembly (1) is used to control the boarding height, characterized in that: At the top of the lifting assembly (1), a first boarding mechanism (2) is installed, and a second boarding mechanism (3) is connected to one side of the first boarding mechanism (2); The first boarding mechanism (2) includes a base (22). On both sides of the base (22), first support rods (21) are fixedly connected. At the top of the first support rods (21), pulleys (211) are rotatably connected. On the side wall of the base (22), two second support rods (24) are symmetrically and fixedly connected. Between the two second support rods (24), multiple rotating rods (25) are arranged. At both ends of the rotating rod (25), scissor frames (26) are rotatably connected. On the outer surface of the middle part of the rotating rod (25), an inclined plate (252) is fixedly connected; The second boarding mechanism (3) includes two fixing plates (36). On the side wall of the top end of the fixing plate (36), a connecting plate (31) is fixedly connected. In the middle of the connecting plate (31), a guiding hole (311) is formed. Inside the guiding hole (311), a roller (312) is slidably connected. Between the two fixing plates (36), a central rod (391) is rotatably connected. At both ends of the central rod (391), second linkage rods (39) are fixedly connected. At the bottom ends of the two second linkage rods (39), first linkage rods (38) are fixedly connected. At the bottom end of the fixing plate (36), a crank (361) is fixedly connected. On the side wall of the fixing plate (36), a push rod (35) is rotatably connected. Between the two push rods (35), a ladder plate (32) is rotatably connected.

2. The intelligent boarding ladder with vertical lifting at the stern of a ship according to claim 1, characterized in that: On the side wall of the second support rod (24), a first driving motor (23) is installed. The output end of the first driving motor (23) is fixedly connected with a driving rod (231). The driving rod (231) is fixedly connected with the scissor frame (26). Inside the second support rod (24), a sliding block (261) is slidably connected. One end of the sliding block (261) is rotatably connected with the rotating rod (25). Between the two inclined plates (252), a connecting plate (251) is rotatably connected.

3. The vertical lifting type intelligent boarding ladder for the stern of a ship according to claim 1, characterized in that: One end of the rotating rod (25) is rotatably connected with a connecting block (27). On the side walls of the two connecting blocks (27), a connecting frame (29) is fixedly connected. The side wall of the connecting frame (29) is fixedly connected with the fixing plate (36). One end of the connecting block (27) hangs with a hanging ring (28). On the outer surface of the hanging ring (28), a steel wire rope (281) is fixedly connected. The steel wire rope (281) passes through the pulley (211). On the side wall of the first support rod (21), a winch (212) is fixedly connected. The steel wire rope (281) is wound on the surface of the winch (212).

4. The vertical lifting type intelligent boarding ladder for the stern of a ship according to claim 1, characterized in that: On the side wall of one of the fixing plates (36), a fixing frame (37) is fixedly connected. Inside the fixing frame (37), a worm (371) is rotatably connected. On the top of the fixing frame (37), a second driving motor (4) is installed. The output end of the second driving motor (4) is fixedly connected with the worm (371).

5. The vertical lifting type intelligent boarding ladder for the stern of a ship according to claim 4, characterized in that: On the outer surface of one end of the central rod (391), a worm gear (372) is fixedly connected. The worm gear (372) is meshed with the worm (371). Between the top ends of the two first linkage rods (38), a second connecting rod (381) is fixedly connected, and between the bottom ends of the two first linkage rods (38), a third connecting rod (382) is fixedly connected.

6. The vertical lifting type intelligent boarding ladder for the stern of a ship according to claim 5, wherein: Both ends of the third connecting rod (382) are respectively rotatably connected to the middle parts of two push rods (35), and a first connecting rod (34) is fixedly connected between the bottom ends of the two push rods (35).

7. The vertical lifting type intelligent boarding ladder for the stern of a ship according to claim 1, characterized in that: A support leg (321) is fixedly connected to the bottom end of the ladder board (32), a sensor is installed inside the support leg (321), a pedal (33) is fixedly connected between the two ladder boards (32), and the top end of the pedal (33) is rotatably connected to a roller (312).

8. The intelligent boarding ladder with vertical lifting at the stern of a ship according to claim 3, characterized in that: The lifting assembly (1) includes a bottom plate (12), a frame (13) is fixedly connected to the center of the top of the bottom plate (12), a hydraulic cylinder (15) is installed in the center of the inner side of the frame (13), a lifting frame (16) is fixedly connected to the top of the hydraulic cylinder (15), the top of the lifting frame (16) is fixedly connected to the bottom of the base (22), a slide rail (14) is fixedly connected to the side wall of the frame (13), a guide block (11) is slidably connected to the surface of the slide rail (14), and the guide block (11) is fixedly connected to the inner wall of the lifting frame (16).

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