Boarding gangway ladder with high safety
By introducing a spring extension mechanism and an adjustment mechanism into the boarding gangway, it automatically adapts to the swaying of the ship, solving the problem of existing gangways being damaged due to their inability to adapt to swaying, and improving safety.
Patent Information
- Application Number
- CN202520828811.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-04-28
AI Technical Summary
Existing boarding gangways are difficult to automatically adapt to the pulling force generated by the swaying of the ship, which makes the gangways prone to damage and reduces the safety of use.
The system employs an elastic extension mechanism and an adjustment mechanism. The elastic extension mechanism, consisting of a limit ring, a limit shaft, a spring, and a limit plate, is combined with a dual-axis motor to drive the gangway body to rotate, automatically adapting to the hull's sway and utilizing the spring's rebound force to improve connection stability.
It enables the gangway to automatically adapt to the hull's sway, improving connection stability, avoiding damage to the gangway due to pulling forces, and enhancing safety in use.
Smart Images

Figure CN223999723U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of boarding gangway technology, and in particular to a highly safe boarding gangway. Background Technology
[0002] Boarding gangways are crucial access facilities connecting ships to the shore. They are typically made of metal or wood and include components such as ladders, steps, and handrails. These gangways are particularly suitable for tanker terminals and passenger ship berths, extending to the deck during operation and retracting to the dock platform during non-operational periods.
[0003] After the boarding gangway is connected to the hull via hooks, when the wind and waves on the shore are too large, the wind and waves will cause the hull to sway, and the sway will cause the hull to exert a pulling force on the gangway. The existing gangways are not able to automatically adapt to the pulling force generated by the sway of the hull, which makes the gangway easy to be damaged by the pulling of the hull, greatly reducing the safety of use. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a highly safe boarding gangway to solve the problems mentioned in the background section.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A highly safe boarding gangway includes a base plate, a fixing ring fixedly connected to the top surface of the base plate, a fixing shaft rotatably connected to the inner wall of the fixing ring, a fixing sleeve fixedly connected to the surface of the fixing shaft, a gangway body fixedly connected to the surface of the fixing sleeve, a fixing rod fixedly connected to the surface of the gangway body, a handrail fixedly connected to the inner wall of the fixing rod, a limit groove formed on the surface of the gangway body, an elastic extension mechanism provided on the surface of the gangway body, a connecting component provided on the left side of the gangway body, an adjustment mechanism provided on the top surface of the base plate, and an installation component provided on the surface of the base plate.
[0007] Preferably, the elastic extension mechanism consists of a limiting ring, a limiting shaft, a spring, and a limiting plate. The limiting ring is fixedly connected to the surface of the gangway body, the limiting shaft is slidably connected to the inner wall of the limiting ring, the spring is fixedly connected to the right side of the limiting ring, the limiting plate is fixedly connected to the right side of the limiting shaft, and the limiting plate is slidably connected to the inner wall of the limiting groove, and the left side of the limiting plate is fixedly connected to the spring.
[0008] Preferably, the connecting assembly consists of a connecting plate and a hook. The connecting plate overlaps with the left side of the gangway body and is fixedly connected to the left side of the limiting shaft. The hook is fixedly connected to the left side of the connecting plate.
[0009] Preferably, the adjustment mechanism consists of a dual-axis motor, a drive wheel, a transmission belt, and a driven wheel. The dual-axis motor is fixedly connected to the top surface of the base plate, the inner wall of the drive wheel is fixedly connected to the output end of the dual-axis motor, the transmission belt meshes with the inner wall of the drive wheel, and the inner wall of the driven wheel is fixedly connected to the surface of the fixed shaft, and the inner wall of the driven wheel meshes with the transmission belt.
[0010] Preferably, the mounting assembly consists of a mounting plate and mounting holes, the mounting plate being fixedly connected to the surface of the base plate, and the mounting holes being formed through the top surface of the mounting plate.
[0011] Preferably, the limiting shaft is cylindrical and made of metal.
[0012] Preferably, there are multiple hooks, and all of the hooks are located on the left side of the connecting plate.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This highly safe boarding gangway uses bolts to fix the base plate to the shore via an installation assembly. The adjustment mechanism drives the gangway body to rotate through a fixed shaft and a fixed sleeve to adapt to the ship's height. Boarding can then proceed by connecting the gangway to the ship via a connecting assembly. The pulling force generated by the ship's swaying pulls the elastic extension mechanism to the left, automatically adapting to the pulling force. Simultaneously, the rebound generated by the elastic extension mechanism further enhances the connection stability of the connecting assembly in conjunction with the ship's swaying. This achieves the goal of the gangway automatically adapting to the ship's swaying for stable connection, avoiding the problem of existing gangways being easily damaged by the pulling force caused by the ship's swaying, thus greatly improving the safety of the gangway. Attached Figure Description
[0014] Figure 1 This is an isometric drawing of the structure of this utility model;
[0015] Figure 2 This is an enlarged view of the structure at point A of this utility model;
[0016] Figure 3 This is a right view of the structure of this utility model;
[0017] Figure 4 This is an enlarged view of the structure at point B of this utility model;
[0018] Figure 5 This is an enlarged view of the structure at point C of this utility model.
[0019] In the diagram: 1. Base plate; 2. Fixing ring; 3. Fixing shaft; 4. Fixing sleeve; 5. Gangway main body; 6. Fixing rod; 7. Handrail; 8. Limiting groove; 9. Limiting ring; 10. Limiting shaft; 11. Spring; 12. Limiting plate; 13. Connecting plate; 14. Hook; 15. Dual-shaft motor; 16. Drive wheel; 17. Transmission belt; 18. Driven wheel; 19. Mounting plate; 20. Mounting hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Reference Figure 1-5 A high-safety boarding gangway includes a base plate 1, a fixing ring 2 fixedly connected to the top surface of the base plate 1, a fixing shaft 3 rotatably connected to the inner wall of the fixing ring 2, a fixing sleeve 4 fixedly connected to the surface of the fixing shaft 3, a gangway body 5 fixedly connected to the surface of the fixing sleeve 4, a fixing rod 6 fixedly connected to the surface of the gangway body 5, a handrail 7 fixedly connected to the inner wall of the fixing rod 6, a limiting groove 8 formed on the surface of the gangway body 5, and an elastic extension mechanism provided on the surface of the gangway body 5. The elastic extension mechanism consists of a limiting ring 9, a limiting shaft 10, a spring 11, and a limiting plate 12. The limiting shaft 10 is cylindrical and made of metal, which provides higher strength, makes it less prone to deformation and damage under stress, and is more durable. The limiting ring 9 is fixedly connected to the surface of the gangway body 5, and the limiting shaft 10 slides against the inner wall of the limiting ring 9. The spring 11 is fixedly connected to the right side of the limiting ring 9, the limiting plate 12 is fixedly connected to the right side of the limiting shaft 10, and the limiting plate 12 is slidably connected to the inner wall of the limiting groove 8. The left side of the limiting plate 12 is fixedly connected to the spring 11 to assist the movement of the connecting assembly, which facilitates automatic adaptation to the swaying of the hull. A connecting assembly is provided on the left side of the gangway body 5. The connecting assembly consists of a connecting plate 13 and hooks 14. There are multiple hooks 14, and all of them are located on the left side of the connecting plate 13. They are used to connect the hull and improve the connection stability. The connecting plate 13 overlaps with the left side of the gangway body 5, and the connecting plate 13 is fixedly connected to the left side of the limiting shaft 10. The hooks 14 are fixedly connected to the left side of the connecting plate 13 to connect the hull and improve the boarding stability. An adjustment mechanism is provided on the top surface of the bottom plate 1, and an installation assembly is provided on the surface of the bottom plate 1.
[0022] Specifically, the adjustment mechanism consists of a dual-axis motor 15, a drive wheel 16, a transmission belt 17, and a driven wheel 18. The dual-axis motor 15 is fixedly connected to the top surface of the base plate 1. The inner wall of the drive wheel 16 is fixedly connected to the output end of the dual-axis motor 15. The transmission belt 17 meshes with the inner wall of the drive wheel 16. The inner wall of the driven wheel 18 is fixedly connected to the surface of the fixed shaft 3, and the inner wall of the driven wheel 18 meshes with the transmission belt 17. This mechanism is used to drive the gangway body 5 to rotate, so as to automatically adapt to the height of the hull.
[0023] Specifically, the mounting assembly consists of a mounting plate 19 and mounting holes 20. The mounting plate 19 is fixedly connected to the surface of the base plate 1, and the mounting holes 20 are opened through the top surface of the mounting plate 19 to fix the base plate 1, thereby improving the stability of the gangway body 5.
[0024] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.
[0025] In use: First, use bolts to fix the base plate 1 to the shore through the mounting plate 19 and mounting holes 20. Start the dual-shaft motor 15 to drive the drive wheel 16 and transmission belt 17 to rotate. Through the meshing of the transmission belt 17 and the driven wheel 18, the fixed shaft 3 and the fixed sleeve 4 are driven to rotate along the inner wall of the fixed ring 2. The rotation of the fixed sleeve 4 can drive the gangway body 5 to rotate to adapt to the height of the ship. The ship can be boarded by connecting the ship through multiple hooks 14. When the ship sways and generates a pulling force, the pulling force drives the connecting plate 13 to move to the left through the hooks 14. The movement of the connecting plate 13 drives the limiting shaft 10 to slide to the left along the inner wall of the limiting ring 9. At the same time, it drives the limiting plate 12 to slide to the left along the inner wall of the limiting groove 8 to compress the spring 11, which can automatically adapt to the pulling force generated by the ship. At the same time, the rebound generated by the spring 11 can cooperate with the swaying of the ship to improve the connection stability of the hook 14.
[0026] In summary, this highly safe boarding gangway uses bolts to fix the base plate 1 to the shore via an installation assembly. Activating the adjustment mechanism drives the gangway body 5 to rotate via the fixed shaft 3 and fixed sleeve 4 to adapt to the ship's height. Boarding can then proceed by connecting to the ship via a connecting assembly. The pulling force generated by the ship's swaying pulls the elastic extension mechanism to the left, automatically adapting to the pulling force. Simultaneously, the rebound generated by the elastic extension mechanism further enhances the connection stability of the connecting assembly in conjunction with the ship's swaying. This achieves the goal of the gangway automatically adapting to the ship's swaying for stable connection, avoiding the problem of existing gangways being easily damaged by the pulling force caused by ship swaying, thus greatly improving the safety of the gangway and solving the problems mentioned in the background art.
[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A boarding gangway with high safety, comprising a base plate (1), characterized in that, The top surface of the bottom plate (1) is fixedly connected with a fixed ring (2), the inner wall of the fixed ring (2) is rotatably connected with a fixed shaft (3), the surface of the fixed shaft (3) is fixedly connected with a fixed sleeve (4), the surface of the fixed sleeve (4) is fixedly connected with a gangway main body (5), the surface of the gangway main body (5) is fixedly connected with a fixed rod (6), the inner wall of the fixed rod (6) is fixedly connected with a handrail (7), the surface of the gangway main body (5) is provided with a limiting sliding groove (8), the surface of the gangway main body (5) is provided with an elastic extension mechanism, the left side of the gangway main body (5) is provided with a connecting assembly, the top surface of the bottom plate (1) is provided with an adjusting mechanism, and the surface of the bottom plate (1) is provided with a mounting assembly.
2. The boarding gangway with high safety according to claim 1, characterized in that, The elastic extension mechanism is composed of a limiting ring (9), a limiting shaft (10), a spring (11) and a limiting plate (12), the limiting ring (9) is fixedly connected with the surface of the gangway main body (5), the limiting shaft (10) is slidably connected with the inner wall of the limiting ring (9), the spring (11) is fixedly connected with the right side of the limiting ring (9), the limiting plate (12) is fixedly connected with the right side of the limiting shaft (10), and the limiting plate (12) is slidably connected with the inner wall of the limiting sliding groove (8), and the left side of the limiting plate (12) is fixedly connected with the spring (11).
3. The boarding gangway with high safety according to claim 1, characterized in that, The connecting assembly is composed of a connecting plate (13) and a hook (14), the connecting plate (13) is overlapped with the left side of the gangway main body (5), and the connecting plate (13) is fixedly connected with the left side of the limiting shaft (10), and the hook (14) is fixedly connected with the left side of the connecting plate (13).
4. The boarding gangway according to claim 1, wherein The adjusting mechanism is composed of a double-shaft motor (15), a driving wheel (16), a transmission belt (17) and a driven wheel (18), the double-shaft motor (15) is fixedly connected with the top surface of the bottom plate (1), the inner wall of the driving wheel (16) is fixedly connected with the output end of the double-shaft motor (15), the transmission belt (17) is engaged with the inner wall of the driving wheel (16), and the inner wall of the driven wheel (18) is fixedly connected with the surface of the fixed shaft (3), and the inner wall of the driven wheel (18) is engaged with the transmission belt (17).
5. The boarding gangway according to claim 1, wherein The mounting assembly is composed of a mounting plate (19) and a mounting hole (20), the mounting plate (19) is fixedly connected with the surface of the bottom plate (1), and the mounting hole (20) is penetratingly arranged on the top surface of the mounting plate (19).
6. The boarding gangway with high safety according to claim 2, wherein The limiting shaft (10) is in a cylindrical shape, and the limiting shaft (10) is made of metal material.
7. The boarding gangway according to claim 3, wherein The number of the hook (14) is multiple, and the multiple hooks (14) are located on the left side of the connecting plate (13).