Boarding ladder for wharf

Abstract

The utility model relates to the technical field of boarding ladders, in particular to a wharf boarding ladder which comprises a fixed base. A connecting plate is fixed to one side of the fixed base, a motor is installed on one side of the fixed base, a ball screw is fixed to the position, located on the inner wall of the fixed base, of the output end of the motor, and the surface of the ball screw is rotationally sleeved with a movable column through threads; a second boarding ladder is fixed to the top end of the square plate, a first boarding ladder is movably inserted into the middle of the second boarding ladder, square grooves are formed in the two sides of the inner wall of the second boarding ladder, long rods are slidably inserted into the square grooves, and fixing plates are fixed to the two sides of the outer surface of the second boarding ladder. By arranging the movable plate, the ball screw, the movable column, the connecting rod and the square plate, the use angle of the first boarding ladder and the use angle of the second boarding ladder can be adjusted, decks of different heights can adapt to the heights of the boarding ladders, the boarding ladders are more stable during use, and the use convenience of the boarding ladders is improved.

Description

Technical Field

[0001] The present application relates to the technical field of boarding ladders, and in particular to a boarding ladder for docks. Background Art

[0002] A boarding ladder is a device used to transport people and cargo between ships and docks. It is widely used in port and ship operations and is designed to ensure safe, efficient and convenient boarding and disembarking operations.

[0003] To facilitate storage, currently used deployable folding boarding ladders include three horizontally arranged boarding ladder bodies. The central boarding ladder body is hinged to the other two boarding ladder bodies on either side. The side boarding ladder bodies can serve as handrails or guardrails for the central boarding ladder body. When increased circulation is required, the side boarding ladder bodies are unfolded, along with the guardrails, thereby conveniently expanding the circulation capacity of the folding boarding ladder of the present invention. When increased circulation capacity is no longer required, the side boarding ladder bodies are folded and retracted, returning the central boarding ladder body to its guardrail configuration, making the folding boarding ladder conveniently foldable.

[0004] However, the angles of existing boarding ladders are mostly fixed, making them difficult to adjust to different boarding ladder heights and adapt to decks of varying heights, making them inconvenient to use. Furthermore, some boarding ladders are fixed in length, making them difficult to extend or shorten according to different usage requirements. This can easily lead to safety hazards due to limited usable distances, and thus needs improvement. Utility Model Content

[0005] In order to improve the convenience of using a boarding ladder, the present application provides a boarding ladder for a dock.

[0006] The present application provides a dock boarding ladder that adopts the following technical solution:

[0007] A dock boarding ladder comprises a fixed base; a connecting plate is fixed to one side of the fixed base; a motor is mounted on one side of the fixed base, and a ball screw is fixed to the output end of the motor located on the inner wall of the fixed base; a movable column is provided on the surface of the ball screw through a threaded rotating sleeve, and connecting rods are hinged on both sides of the movable column; a limit plate is fixed to the top end of the fixed base, and a movable plate is hinged in the limit plate, and a square plate is hinged on the other end of the movable plate;

[0008] A second boarding ladder is fixed to the top of the square plate, and the first boarding ladder is movably inserted in the middle of the second boarding ladder, square grooves are provided on both sides of the inner wall of the second boarding ladder, and a long rod is slidably inserted in the square groove, fixed plates are fixed on both sides of the outer surface of the second boarding ladder, and a square groove is provided on one side of the fixed plate, an L-shaped plate is slidably inserted in the square groove, and a slide plate is fixed to the top of the L-shaped plate, a cross groove is provided on the surface of the slide plate, and a round rod is slidably inserted in the cross groove, and a card block and a square block are respectively fixed on the surface of the round rod.

[0009] By adopting the above technical solution, the motor is started to drive the ball screw to rotate, the movable column is hingedly connected to the connecting rod, and the movable plate is hingedly connected to the square plate. The use angle of the first boarding ladder and the second boarding ladder can be adjusted, which helps to adapt the height of the boarding ladder to decks of different heights, making the boarding ladder more stable when in use, and can better meet the needs of loading and unloading cargo, especially when transporting large cargo or equipment, improving work efficiency, and reducing the risk of slipping or falling, ensuring the safety of the boarding process.

[0010] Optionally, a first boarding ladder is hinged to the top end of the connecting plate, and long rods are fixed on both sides of the outer surface of the first boarding ladder.

[0011] By adopting the above technical solution, the stability during movement is improved and the shaking of the upper part is reduced.

[0012] Optionally, two groups of movable plates are provided, and the two groups of movable plates are symmetrically hinged in the middle of the limiting plate, and both sides of the movable plates at the bottom are hingedly connected to the connecting rod.

[0013] By adopting the above technical solution, the design of two sets of movable plates allows the angle of use to change simultaneously, thereby improving the balance of use.

[0014] Optionally, handrails are fixed on both sides of the top of the first boarding ladder and the second boarding ladder, and sliding grooves are symmetrically opened on both sides of the outer surface of the second boarding ladder, and the slide is slidably inserted into the sliding groove, and one side of the slide is fixedly connected to the first boarding ladder.

[0015] By adopting the above technical solution, a fulcrum is provided for the user in case of an accident, thereby reducing the possibility of falling.

[0016] Optionally, sliding grooves are symmetrically provided on both sides of the outer surface of the second boarding ladder, and the slide plate is slidably inserted into the sliding groove, and one side of the slide plate is fixedly connected to the first boarding ladder.

[0017] By adopting the above technical solution, the connection between the first boarding ladder and the second boarding ladder is made tighter, thereby improving the stability of use.

[0018] Optionally, the top ends of the two groups of fixed plates are provided with special-shaped grooves, and multiple groups of special-shaped grooves are provided at equal intervals, the round rod and the block are slidably inserted into the special-shaped grooves, and the round rod and the block pass through the L-shaped plate at the same time.

[0019] By adopting the above technical solution, the device can be stored when not in use, thus reducing the space occupied.

[0020] Optionally, the round rod and the square block are both adapted to the cross groove, and the round rod and the square block are movably inserted into the cross groove.

[0021] By adopting the above technical solution, the engagement is made more stable.

[0022] Optionally, the square blocks are symmetrically arranged in two groups, round rods are fixed in the middle of the two groups of square blocks, and the clamping blocks are located below the two groups of square blocks.

[0023] By adopting the above technical solution, the safety of use is improved.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The starting motor drives the ball screw to rotate, the movable column is hingedly connected to the connecting rod, and the movable plate is hingedly connected to the square plate. The use angle of the first and second boarding ladders can be adjusted, which helps to adapt the height of the boarding ladder to decks of different heights. The boarding ladder is more stable during use and can better meet the needs of cargo loading and unloading. Especially when handling large cargo or equipment, it can improve work efficiency, reduce the risk of slips or falls, and ensure the safety of the boarding process.

[0026] 2. Move the first and second boarding ladders to appropriate lengths and insert the round rods into appropriate positions in the fixing plate. This allows them to adapt to ships of different heights, making it easier for people and cargo to get on and off the ship. It also helps reduce the risk of accidents when getting on and off the ship, improves the safety of people and cargo, and enhances the adaptability of the boarding ladders under different tidal conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a dock boarding ladder according to an embodiment of the present application.

[0028] Figure 2 It is a structural diagram of the limiting plate and the movable plate in an embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram of the square plate of an embodiment of the present application.

[0030] Figure 4It is a structural schematic diagram of the first boarding ladder in an embodiment of the present application.

[0031] Figure 5 It is a structural schematic diagram of the second boarding ladder in an embodiment of the present application.

[0032] Figure 6 It is a structural diagram of the round rod in the embodiment of the present application.

[0033] Explanation of the accompanying reference numerals: 1. Fixed base; 2. Connecting plate; 3. Motor; 4. Limiting plate; 5. Movable plate; 6. Ball screw; 7. Moving column; 8. First boarding ladder; 9. Second boarding ladder; 10. Handrail; 11. Connecting rod; 12. Square plate; 13. Square groove; 14. Slide groove; 15. Fixed plate; 16. Special-shaped groove; 17. Slide plate; 18. L-shaped plate; 19. Long rod; 20. Cross groove; 21. Round rod; 22. Block; 23. Square groove; 24. Square block. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] The embodiment of the present application discloses a boarding ladder for docks. Figure 1 A dock boarding ladder includes a fixed base 1, a connecting plate 2 is fixedly installed on one side of the fixed base 1 by bolts, and a motor 3 is installed on the other side of the fixed base 1. The motor 3 is a stepping motor, which has a high control force, can rotate in both directions, and also has a self-locking function. The output end of the motor 3 passes through the side wall of the fixed base 1, and a ball screw 6 is fixed to the output shaft of the motor 3 by bolts. A movable column 7 is sleeved on the outer peripheral wall of the ball screw 6, and the movable column 7 is connected to the ball screw 6 by threaded rotation. A limiting plate 4 is fixed to the top wall of the fixed base 1 by bolts, and two movable plates 5 are hinged on the limiting plate 4. The two movable plates 5 are arranged parallel to each other and arranged along the height direction of the limiting plate 4. Connecting rods 11 are hinged on both sides of the movable column 7, and the two sides of the movable plate 5 located at the bottom are hinged to the connecting rod 11.

[0036] Reference Figure 2 and Figure 3 , a square plate 12 is provided on the movable plate 5, and the two movable plates 5 are hingedly connected to the square plate 12. The limiting plate 4, the two movable plates 5 and the square plate 12 form a parallelogram structure.

[0037] Reference Figure 1 and Figure 2A second boarding ladder 9 is bolted to the square plate 12, with its bottom wall abutting against the top wall of the square plate 12. A first boarding ladder 8 is movably inserted within the second boarding ladder 9, sliding along its length. The end of the first boarding ladder 8, located near the connecting plate 2, is pivotally connected to the top wall of the connecting plate 2 via a hinged seat. Handrails 10 are fixed to both sides of the top of the first and second boarding ladders 8, for users to hold onto.

[0038] When in use, place the entire device in a suitable position, start the motor 3, and the motor 3 drives the ball screw 6 to rotate. When the output end of the ball screw 6 rotates clockwise, the movable column 7 moves to the left in the fixed base 1. The movement of the movable column 7 drives the angle of the connecting rods 11 hinged on both sides to change, and the connecting rods 11 drive the hinge angle of the movable plate 5 in the limit plate 4 to change. The movement of one group of movable plates 5 causes the use angle of the square plate 12 to change, and then the square plate 12 drives the use angle of the other group of movable plates 5 to change. The change of the square plate 12 drives the use angle of the second boarding ladder 9 to change, so that the overall use angle of the device becomes higher. When the use angle needs to be lowered, the output end of the motor 3 can be used to drive the ball screw 6 to rotate counterclockwise in the same way. The angle adjustment of the second boarding ladder 9 and the first boarding ladder 8 is achieved, which improves the convenience of using the boarding ladder.

[0039] Reference Figure 4 and Figure 5 A square groove 13 is provided on both sides of the inner wall of the second boarding ladder 9, and a long rod 19 is fixed on both sides of the outer surface of the first boarding ladder 8, and the long rod 19 is slidably inserted into the square groove 13. A fixing plate 15 is fixed on both sides of the outer surface of the second boarding ladder 9 by bolts.

[0040] Reference Figure 4 and Figure 6 A square groove 23 is provided on one side of the fixed plate 15, and an L-shaped plate 18 is slidably inserted into the square groove 23, and a slide plate 17 is fixed to the top of the L-shaped plate 18. Slide grooves 14 are symmetrically provided on both sides of the outer surface of the second boarding ladder 9, and a slide plate 17 is slidably inserted into the slide groove 14. One side of the slide plate 17 is fixedly connected to the first boarding ladder 8. The first boarding ladder 8 and the second boarding ladder 9 are slidably matched through the slide plate 17. A cross groove 20 is provided on the surface of the slide plate 17, and a round rod 21 is slidably inserted into the cross groove 20. A clamping block 22 and a square block 24 are fixed on the surface of the round rod 21 respectively. The square blocks 24 are symmetrically arranged in two groups. The two groups of square blocks 24 are respectively located on both sides of the round rod 21, and the clamping block 22 is located below the two groups of square blocks 24.

[0041] The round rod 21 and the square block 24 are both adapted to fit within the cross groove 20. The tops of the two sets of fixing plates 15 are provided with multiple sets of shaped grooves 16 spaced evenly apart. The round rod 21 is slidably inserted into the shaped grooves 16 and simultaneously passes through the L-shaped plate 18.

[0042] According to the angle of use, the use length of the first boarding ladder 8 and the second boarding ladder 9 is adjusted, and the first boarding ladder 8 is pulled outward or pushed toward the second boarding ladder 9. As the first boarding ladder 8 moves, the long rod 19 is driven to slide in the square groove 13. At the same time, the movement of the first boarding ladder 8 drives the cross groove 20 to slide in the slide groove 14, and the movement of the slide plate 17 drives the L-shaped plate 18 to slide in the square groove 23. Then, when the first boarding ladder 8 and the second boarding ladder 9 are moved to the appropriate use length, the two sets of round rods 21 are respectively inserted into the corresponding special-shaped grooves 16. The round rods 21 and the blocks 22 simultaneously penetrate the special-shaped grooves 16, the slide plate 17 and the L-shaped plate 18. At the same time, multiple sets of square blocks 24 are inserted into the corresponding blocks 22 of the slide plate 17 as the round rods 21 move. Finally, the first boarding ladder 8 and the second boarding ladder 9 are fixed.

[0043] The implementation principle of a dock boarding ladder in an embodiment of the present application is as follows: the ball screw 6 can rotate in the fixed base 1, and the ball screw 6 and the movable column 7 are used in conjunction to drive the movable plate 5 to change the use position on one side of the limit plate 4, so that the square plate 12 drives the use angle of the second boarding ladder 9 to change, and the first boarding ladder 8 and the second boarding ladder 9 are moved, and then the round rod 21 is moved to the corresponding position for fixing.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A dock boarding ladder, comprising: A fixed base (1); characterized in that: a connecting plate (2) is fixed on one side of the fixed base (1), a motor (3) is installed on one side of the fixed base (1), and the output end of the motor (3) is located on the inner wall of the fixed base (1) and fixed with a ball screw (6), a movable column (7) is provided on the surface of the ball screw (6) through a threaded rotating sleeve, and connecting rods (11) are hinged on both sides of the movable column (7), a limiting plate (4) is fixed on the top of the fixed base (1), and a movable plate (5) is hinged in the limiting plate (4), and the other end of the movable plate (5) is hinged with a square plate (12); A second boarding ladder (9) is fixed to the top of the square plate (12), and a first boarding ladder (8) is movably inserted in the middle of the second boarding ladder (9), square grooves (13) are provided on both sides of the inner wall of the second boarding ladder (9), and a long rod (19) is slidably inserted in the square groove (13), a fixed plate (15) is fixed on both sides of the outer surface of the second boarding ladder (9), and a square groove (23) is provided on one side of the fixed plate (15), an L-shaped plate (18) is slidably inserted in the square groove (23), and a slide plate (17) is fixed to the top of the L-shaped plate (18), a cross groove (20) is provided on the surface of the slide plate (17), and a round rod (21) is slidably inserted in the cross groove (20), and a clamping block (22) and a square block (24) are respectively fixed on the surface of the round rod (21).

2. A dock boarding ladder according to claim 1, characterized in that: A first boarding ladder (8) is hingedly connected to the top end of the connecting plate (2), and long rods (19) are fixed on both sides of the outer surface of the first boarding ladder (8).

3. The dock boarding ladder according to claim 1, characterized in that: Two groups of movable plates (5) are provided. The two groups of movable plates (5) are symmetrically hinged in the middle of the limiting plate (4), and the two sides of the movable plates (5) located at the bottom are hingedly connected to the connecting rod (11).

4. The dock boarding ladder according to claim 1, characterized in that: Handrails (10) are fixed on both sides of the top of the first boarding ladder (8) and the second boarding ladder (9).

5. The dock boarding ladder according to claim 1, characterized in that: Slide grooves (14) are symmetrically provided on both sides of the outer surface of the second boarding ladder (9), and the slide plate (17) is slidably inserted into the slide groove (14), and one side of the slide plate (17) is fixedly connected to the first boarding ladder (8).

6. The dock boarding ladder according to claim 1, characterized in that: The top ends of the two groups of fixed plates (15) are provided with special-shaped grooves (16), and a plurality of special-shaped grooves (16) are provided at equal intervals. The round rods (21) and the clamping blocks (22) are slidably inserted into the special-shaped grooves (16), and the round rods (21) and the clamping blocks (22) simultaneously penetrate the L-shaped plate (18).

7. The dock boarding ladder according to claim 2, characterized in that: The round rod (21) and the square block (24) are both adapted to the cross groove (20), and the round rod (21) and the square block (24) are movably inserted into the cross groove (20).

8. The dock boarding ladder according to claim 2, characterized in that: The square blocks (24) are symmetrically arranged in two groups, and a round rod (21) is fixed in the middle of the two groups of square blocks (24). The clamping block (22) is located below the two groups of square blocks (24).

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