Hand-operated boarding ladder
The design of the hand-cranked boarding ladder solves the problems of poor fixation and low safety of existing boarding ladders, and achieves simple operation, smooth lifting and lowering, and stable use, thus improving the convenience and safety of the boarding ladder.
Patent Information
- Application Number
- CN202520718191.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-16
AI Technical Summary
The existing boarding ladders are poorly secured when docked, sway violently when people pass through, have an unstable center of gravity, are unsafe, and are prone to accidents such as tipping over.
A hand-cranked boarding ladder was designed. Through the cooperation of connecting plates, hinges, support plates, rotating wheels and hand-cranked winches, the boarding ladder is driven to rise and fall by hand-cranking winches. The boarding ladder is equipped with long and short handrails, fixed plates, connecting hooks and other structures to ensure stability and flexibility.
It achieves simple operation, smooth lifting and lowering, and saves effort, improving the convenience and safety of boarding ladders, reducing the difficulty of operation, enhancing the fixing effect, reducing space occupation, extending service life and reducing maintenance costs.
Smart Images
Figure CN223891156U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of boarding equipment technology, and in particular to a hand-cranked boarding ladder. Background Technology
[0002] There are many inland river docks in the Jiangsu and Zhejiang regions, but there are no good inland river boarding ladders. This is even more true for hazardous chemical docks. Due to the high explosion-proof requirements of hazardous chemical docks, hydraulic ladders are too large to be used in inland river docks. This invention of a hand-cranked boarding ladder makes it easier for personnel to get on and off the dock, and ensures the safety of personnel getting on and off the ship.
[0003] Existing boarding ladders have several problems. Some require manual placement on the dock when the ship is moored, resulting in poor stability, significant swaying during passenger passage, instability, and a low safety risk, making them prone to tipping over and other accidents.
[0004] In view of the above and existing related technologies, the inventor believes that the following defects often exist: boarding ladders have a variety of problems. When docking, the ladders need to be manually placed on the dock, resulting in poor fixation, strong swaying when people pass through, unstable center of gravity, poor safety, and easy to cause accidents such as tipping over. Therefore, a hand-cranked boarding ladder is proposed to address the above problems. Utility Model Content
[0005] The purpose of this utility model is to solve the problems of existing boarding ladders, such as the need for manual placement of the ladder on the dock when the ship is docked, poor fixation, strong swaying when people pass through, unstable center of gravity, poor safety, and easy to overturn and other accidents. Therefore, a hand-cranked boarding ladder is proposed.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hand-cranked boarding ladder, comprising a support frame, a boarding ladder body rotatably mounted on one side of the support frame, a connecting plate fixedly connected to the surface of the boarding ladder body, a hinge rotatably mounted on one side of the connecting plate, a support plate fixedly connected to the surface of the support frame, a rotating wheel mounted on the surface of the support plate, the arc surface of the rotating wheel rotatably connected to the hinge, a hand-cranked winch fixedly connected to one end of the hinge, and the hand-cranked winch fixedly mounted on the surface of the support frame.
[0007] The aforementioned components achieve the following effects: through the cooperation of the connecting plate, hinge, support plate, rotating wheel, and hand-cranked winch, turning the hand-cranked winch can drive the boarding ladder body to rotate around the connection point via the hinge, thereby achieving lifting and lowering. On the one hand, the operation is simple, as the lifting and lowering of the boarding ladder body can be controlled simply by turning the hand-cranked winch, reducing the difficulty of operation. On the other hand, the rotating wheel and hinge are connected to make the lifting and rotating process smoother and less strenuous, and the boarding ladder can be easily retracted when not in use, effectively saving space and greatly improving the convenience and flexibility of the boarding ladder.
[0008] Preferably, a long handrail and a short handrail are fixedly connected to the surface of the boarding ladder body, and the surfaces of the long handrail and the short handrail are covered with anti-slip pads.
[0009] The aforementioned components achieve the following effects: by installing long and short handrails on the boarding ladder body, it is easier for people boarding and disembarking to maintain stability, and the anti-slip pads on the handrail surface can increase the friction between people and the handrail, thus improving the practicality of the device.
[0010] Preferably, the surface of the boarding ladder is fixedly connected to two fixed plates, and a connecting hook is slidably connected inside the fixed plate. A plurality of adjustment grooves are provided on one side of the connecting hook. An L-shaped plate is fixedly connected to one side of the fixed plate, and a sliding rod is slidably inserted inside the L-shaped plate. The size of the sliding rod is adapted to the size of the adjustment groove of the connecting hook, and a pull plate is fixedly connected to one end of the sliding rod.
[0011] The effect achieved by the above components is as follows: through the structural design of the fixed plate, connecting hook, adjusting groove, L-shaped plate and sliding rod, the sliding rod can be adapted to be inserted into the adjusting groove of the connecting hook, so that the connecting hook can slide flexibly and adjust its position within the fixed plate, which facilitates the docking of the boarding ladder body with the ship hull and improves the practicality of the device.
[0012] Preferably, the arc surface of the sliding rod is fitted with a spring, and the two ends of the spring are fixedly connected to the pull plate and the L-shaped plate, respectively.
[0013] The effect achieved by the above components is that, under the action of the spring, the sliding rod is automatically pushed into the adjusting groove of the connecting hook, thus improving the practicality of the device.
[0014] Preferably, the arc surface of the sliding rod is provided with a limiting groove, and a limiting rod is slidably inserted into the L-shaped plate. The size of the limiting rod is adapted to the size of the limiting groove of the sliding rod. One end of the limiting rod is fixedly connected to a soft rope, and one end of the soft rope is fixedly connected to the L-shaped plate.
[0015] The above components achieve the following effects: by setting a limiting rod, the sliding rod after stretching is limited, which makes it easier for the staff to adjust the connecting hook. At the same time, the soft rope prevents the limiting rod from being lost due to external factors, thus improving the practicality of the device.
[0016] Preferably, a rubber sleeve is fixedly connected to the inner wall of the connecting hook, and the surface of the rubber sleeve is provided with anti-slip strips.
[0017] The aforementioned components achieve the following effect: by setting up a rubber sleeve, the hull is protected when the connecting hook is connected to the hull, thus improving the practicality of the device.
[0018] Preferably, the boarding ladder body is made of high-strength metal material, such as aluminum alloy or stainless steel.
[0019] The effects achieved by the above components are as follows: the boarding ladder body is made of high-strength metal materials such as aluminum alloy or stainless steel, which has good corrosion resistance and high strength, and can adapt to the complex and ever-changing environment in ship operations, including harsh conditions such as high humidity and high salt spray at sea, effectively extending the service life of the boarding ladder and reducing maintenance costs. At the same time, the high strength characteristics ensure the safety and stability of the boarding ladder when carrying personnel and cargo, and improve its performance.
[0020] In this invention, the connecting plate, hinge, support plate, rotating wheel, and hand-cranked winch work together to lift and lower the boarding ladder by rotating the hand-cranked winch and using the hinge to drive the boarding ladder body to rotate around the connection point. On the one hand, the operation is simple, as the lifting and lowering of the boarding ladder body can be controlled by simply rotating the hand-cranked winch, reducing the difficulty of operation. On the other hand, the rotating wheel and hinge are connected to make the lifting and rotating process smoother and less strenuous, and the boarding ladder can be easily retracted when not in use, effectively saving space and greatly improving the convenience and flexibility of the boarding ladder. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a side view of the present invention;
[0023] Figure 3 This is a schematic diagram of the structure of the fixing plate in this utility model;
[0024] Figure 4 In this utility model Figure 3 Enlarged view of point A.
[0025] Legend: 1. Support frame; 2. Boarding ladder body; 3. Connecting plate; 4. Support plate; 5. Hinge; 6. Rotating wheel; 7. Hand-cranked winch; 8. Long handrail; 9. Short handrail; 10. Fixing plate; 11. Connecting hook; 12. Sliding rod; 13. L-shaped plate; 14. Pull plate; 15. Spring; 16. Limiting rod; 17. Soft rope; 18. Rubber sleeve. Detailed Implementation
[0026] Reference Figure 1-4As shown, this utility model provides a technical solution: a hand-cranked boarding ladder, including a support frame 1, a boarding ladder body 2 rotatably mounted on one side of the support frame 1, a connecting plate 3 fixedly connected to the surface of the boarding ladder body 2, a hinge 5 rotatably mounted on one side of the connecting plate 3, a support plate 4 fixedly connected to the surface of the support frame 1, a rotating wheel 6 mounted on the surface of the support plate 4, the arc surface of the rotating wheel 6 rotatably connected to the hinge 5, a hand-cranked winch 7 fixedly connected to one end of the hinge 5, and the hand-cranked winch 7 fixedly mounted on the surface of the support frame 1. The connecting plate 3, hinge 5, support plate 4, rotating wheel 6 and hand-cranked winch 7 work together to rotate the boarding ladder body 2 around the connection point by rotating the hand-cranked winch 7. On the one hand, the operation is simple, and the lifting and lowering of the boarding ladder body 2 can be controlled by simply rotating the hand-cranked winch 7, which reduces the difficulty of operation. On the other hand, the rotating wheel 6 is rotatably connected to the hinge 5, making the lifting and rotation process smoother and less strenuous. It is also convenient to fold up the boarding ladder when not in use, which effectively saves space and greatly improves the convenience and flexibility of the boarding ladder. The surface of the boarding ladder body 2 is fixedly connected with a long handrail 8 and a short handrail 9, and the surface of the long handrail 8 and the short handrail 9 is covered with anti-slip pads. By installing long handrails 8 and short handrails 9 on the boarding ladder body 2, it is easier for people to maintain stability when boarding and disembarking. The anti-slip pads on the surface of the handrails can increase the friction between people and the handrails, improving the practicality of the device. Two fixed plates 10 are fixedly connected to the surface of the boarding ladder. Connecting hooks 11 are slidably connected in the fixed plates 10. Several adjustment slots are opened on one side of the connecting hooks 11. An L-shaped plate 13 is fixedly connected to one side of the fixed plates 10. A sliding rod 12 is slidably inserted in the L-shaped plate 13. The size of the sliding rod 12 is adapted to the size of the adjustment slot of the connecting hook 11. A pull plate 14 is fixedly connected to one end of the sliding rod 12. Through the structural design of the fixed plate 10, connecting hook 11, adjusting groove, L-shaped plate 13, and sliding rod 12, the sliding rod 12 is adapted to be inserted into the adjusting groove of the connecting hook 11, allowing the connecting hook 11 to slide flexibly and adjust its position within the fixed plate 10. This facilitates docking of the boarding ladder body 2 with the ship hull, improving the practicality of the device. A spring 15 is fitted onto the arc surface of the sliding rod 12, with both ends of the spring 15 fixedly connected to the pull plate 14 and the L-shaped plate 13, respectively. Under the force of the spring 15, the sliding rod 12 is automatically springed into the adjusting groove of the connecting hook 11, further improving the practicality of the device. A limiting groove is provided on the arc surface of the sliding rod 12, and a limiting rod 16 is slidably inserted into the L-shaped plate 13. The size of the limiting rod 16 is adapted to the size of the limiting groove of the sliding rod 12, and a soft rope 17 is fixedly connected to one end of the limiting rod 16. The other end of the soft rope 17 is fixedly connected to the L-shaped plate 13.By setting a limiting rod 16, the stretched sliding rod 12 is limited, facilitating the adjustment of the connecting hook 11 by the staff. Simultaneously, the soft rope 17 prevents the limiting rod 16 from being lost due to external factors, improving the practicality of the device. A rubber sleeve 18 is fixedly connected to the inner wall of the connecting hook 11, and the surface of the rubber sleeve 18 is equipped with anti-slip strips. The rubber sleeve 18 protects the hull when the connecting hook 11 is connected to it, further improving the practicality of the device. The boarding ladder body 2 is made of high-strength metal materials, such as aluminum alloy or stainless steel. The use of high-strength metal materials like aluminum alloy or stainless steel in the boarding ladder body 2 provides excellent corrosion resistance and high strength, enabling it to adapt to the complex and changing environment of ship operations, including harsh conditions such as high humidity and high salt spray at sea. This effectively extends the service life of the boarding ladder, reduces maintenance costs, and ensures the safety and stability of the boarding ladder when carrying personnel and cargo, enhancing its performance.
[0027] Working principle: When the hand-cranked boarding ladder is in operation, the hand-cranked winch 7 fixed on the surface of the support frame 1 is rotated. The hand-cranked winch 7 drives the hinge 5 connected to it to move. Since one end of the hinge 5 is rotatably connected to the connecting plate 3 on the surface of the boarding ladder body 2, it drives the boarding ladder body 2 to rotate around the connection point between it and the support frame 1, thereby realizing lifting and lowering. During the process, the rotating wheel 6 on the support plate 4 is rotatably connected to the hinge 5, making lifting and lowering smoother and less strenuous. When not in use, the boarding ladder can be easily retracted to save space. The long and short handrails 9 and anti-slip pads on the surface of the boarding ladder body 2 provide stable grip for people getting on and off the ship and increase friction. When docking with the ship is required, pull the pull plate 14 to disengage the sliding rod 12 from the adjustment groove of the connecting hook 11. The connecting hook 11 can then slide and adjust its position flexibly within the fixed plate 10. After docking, the spring 15 automatically springs the sliding rod 12 into the corresponding adjustment groove to fix the connecting hook 11. The rubber sleeve 18 on the inner wall of the connecting hook 11 can protect the ship when docking with the ship. The boarding ladder body 2 is made of high-strength metal materials such as aluminum alloy or stainless steel, which gives it good corrosion resistance and high strength, can adapt to complex environments, and ensures safe and stable use.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A hand-cranked boarding ladder, comprising a support frame (1), characterized in that: A boarding ladder body (2) is rotatably mounted on one side of the support frame (1). A connecting plate (3) is fixedly connected to the surface of the boarding ladder body (2). A hinge (5) is rotatably mounted on one side of the connecting plate (3). A support plate (4) is fixedly connected to the surface of the support frame (1). A rotating wheel (6) is mounted on the surface of the support plate (4). The arc surface of the rotating wheel (6) is rotatably connected to the hinge (5). A hand-cranked winch (7) is fixedly connected to one end of the hinge (5). The hand-cranked winch (7) is fixedly mounted on the surface of the support frame (1).
2. The hand-cranked boarding ladder according to claim 1, characterized in that: The surface of the boarding ladder body (2) is fixedly connected with a long handrail (8) and a short handrail (9), and the surfaces of the long handrail (8) and the short handrail (9) are covered with anti-slip pads.
3. A hand-cranked boarding ladder according to claim 1, characterized in that: The boarding ladder is fixedly connected to two fixed plates (10). A connecting hook (11) is slidably connected inside the fixed plate (10). Several adjustment slots are provided on one side of the connecting hook (11). An L-shaped plate (13) is fixedly connected to one side of the fixed plate (10). A sliding rod (12) is slidably inserted inside the L-shaped plate (13). The size of the sliding rod (12) is adapted to the size of the adjustment slot of the connecting hook (11). A pull plate (14) is fixedly connected to one end of the sliding rod (12).
4. A hand-cranked boarding ladder according to claim 3, characterized in that: The arc surface of the sliding rod (12) is fitted with a spring (15), and the two ends of the spring (15) are fixedly connected to the pull plate (14) and the L-shaped plate (13) respectively.
5. A hand-cranked boarding ladder according to claim 3, characterized in that: The arc surface of the sliding rod (12) is provided with a limiting groove, and a limiting rod (16) is slidably inserted in the L-shaped plate (13). The size of the limiting rod (16) is adapted to the size of the limiting groove of the sliding rod (12). One end of the limiting rod (16) is fixedly connected to a soft rope (17), and one end of the soft rope (17) is fixedly connected to the L-shaped plate (13).
6. A hand-cranked boarding ladder according to claim 3, characterized in that: A rubber sleeve (18) is fixedly connected to the inner wall of the connecting hook (11), and the surface of the rubber sleeve (18) is provided with anti-slip strips.
7. A hand-cranked boarding ladder according to claim 1, characterized in that: The boarding ladder body (2) is made of high-strength metal material, which is aluminum alloy or stainless steel.