Auxiliary boarding ladder

Abstract

The utility model belongs to the technical field of marine parts, and particularly relates to an auxiliary boarding ladder which comprises a middle transverse plate, a left transverse plate and a right transverse plate are arranged at the bottom of the middle transverse plate in an attached mode, first rectangular holes are formed in the left transverse plate and the right transverse plate respectively, rectangular blocks are arranged on the inner walls of the first rectangular holes in an attached mode, and the rectangular blocks are connected with the left transverse plate and the right transverse plate in an attached mode. The upper surface of the rectangular block is fixedly connected with the bottom of the middle transverse plate, and the surface of the rectangular block is fixedly connected with a limiting ring. According to the auxiliary boarding ladder, through cooperation of a middle transverse plate, a left transverse plate, a right transverse plate, a first rectangular hole, a rectangular block, a limiting ring, a hollow block, a threaded cylinder, a box body, a U-shaped plate, a first bearing, a connecting cylinder, a worm gear, a threaded column, a first round hole, a second bearing, a second round hole, a third bearing, a worm and a rotating disc, a user can rotate the rotating disc; therefore, the length of the stairway of the auxiliary boarding ladder can be changed, so that the auxiliary boarding ladder can be suitable for different use scenes.

Description

Technical Field

[0001] This utility model belongs to the technical field of marine components, specifically relating to an auxiliary boarding ladder. Background Technology

[0002] In ship boarding operations, the safety and applicability of boarding assistance equipment are crucial. Existing boarding assistance ladders are mainly composed of ladders, ladder frames, and railings, such as the boarding assistance ladder disclosed in Chinese Patent Publication No. CN212473825U. However, since the length of the ladders in auxiliary boarding ladders is usually fixed, the fixed length of the ladders is difficult to adapt flexibly to different ship types, changes in ship spacing, or complex sea conditions. This may lead to inconvenience in boarding or even safety hazards. For example, when the two ships have a large difference in width or the berthing angle changes, the fixed ladders may not be able to connect accurately, increasing the risk of personnel climbing. Summary of the Invention

[0003] The purpose of this utility model is to provide an auxiliary boarding ladder, which solves the problem that the length of the ladder is usually fixed, making it difficult to flexibly adapt to different ship types, changes in ship spacing, or complex sea conditions, which may lead to inconvenience in boarding or even safety hazards.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] An auxiliary boarding ladder includes a central horizontal plate. A left and right horizontal plate are fitted to the bottom of the central horizontal plate. Both the left and right horizontal plates have first rectangular holes inside. A rectangular block is fitted to the inner wall of each first rectangular hole. The upper surface of the rectangular block is fixedly connected to the bottom of the central horizontal plate. A limit ring is fixedly connected to the surface of the rectangular block. The bottoms of both the left and right horizontal plates are fitted to the upper surfaces of the limit rings. A ladder frame is fixedly connected to the bottoms of both the left and right horizontal plates. A hollow block is fixedly connected to the bottom of both the left and right horizontal plates. A threaded cylinder is fixedly connected to the inner wall of each hollow block. The bottom of the central horizontal plate is fixedly connected to... The box has a box body. A U-shaped plate is fixedly connected to the bottom of the middle horizontal plate. A first bearing is fixedly connected to the inner wall of the U-shaped plate. A connecting cylinder is fixedly connected to the inner ring of the first bearing. A worm gear is fixedly connected to the surface of the connecting cylinder. Threaded columns are fixedly connected to both ends of the connecting cylinder. First circular holes are opened on both the left and right sides of the box body. Second bearings are fixedly connected to the inner wall of the first circular holes and the surface of the threaded columns. Second circular holes are opened on both the front and rear sides of the box body. A third bearing is fixedly connected to the inner wall of the second circular holes. A worm is fixedly connected to the inner ring of the third bearing. The worm meshes with the worm gear. A turntable is fixedly connected to the front of the worm.

[0006] The present invention is further configured such that the length of the first rectangular hole is greater than the length of the rectangular block, and the width of the first rectangular hole is equal to the width of the rectangular block.

[0007] The present invention is further configured such that a first railing is fixedly connected to the upper surface of the middle horizontal plate, and a second railing is fixedly connected to the upper surfaces of both the left and right horizontal plates.

[0008] The present invention is further configured such that through holes are provided inside both the left and right horizontal plates.

[0009] The present invention is further configured such that a limiting circular hole is provided inside the middle horizontal plate, and a second rectangular hole is provided inside the left horizontal plate and the right horizontal plate. A limiting cylinder is provided in close contact with the inner wall of the limiting circular hole and the inner wall of the second rectangular hole. A magnetic ring is fixedly connected to the surface of the limiting cylinder, and the bottom of the magnetic ring is in close contact with the upper surface of the middle horizontal plate.

[0010] The present invention is further configured such that the diameter of the limiting cylinder is less than the length of the second rectangular hole, and the diameter of the limiting cylinder is equal to the width of the second rectangular hole.

[0011] The technical effects achieved by this utility model are as follows:

[0012] This utility model discloses an auxiliary boarding ladder. Through the cooperation of a middle horizontal plate, a left horizontal plate, a right horizontal plate, a first rectangular hole, a rectangular block, a limiting ring, a hollow block, a threaded cylinder, a box, a U-shaped plate, a first bearing, a connecting cylinder, a worm gear, a threaded column, a first round hole, a second bearing, a second round hole, a third bearing, a worm, and a turntable, the user can change the length of the ladder by rotating the turntable, thus making the auxiliary boarding ladder suitable for different usage scenarios.

[0013] This utility model provides an auxiliary boarding ladder that, through the cooperation of a limiting circular hole, a second rectangular hole, a limiting cylinder, and a magnetic ring, prevents the distance between the left and right horizontal plates from increasing further once a specified size is reached. This allows the user to accurately adjust the length of the auxiliary boarding ladder to a suitable size. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of this utility model;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 yes Figure 2 Sectional view at point AA;

[0017] Figure 4 This is a bottom view of the structure of this utility model;

[0018] Figure 5 This is a front view of the box body in this utility model;

[0019] Figure 6 This is a left view of the box body in this utility model;

[0020] Figure 7 This is a left view of the U-shaped plate in this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Middle horizontal plate; 2. Left horizontal plate; 3. Right horizontal plate; 4. First rectangular hole; 5. Rectangular block; 6. Limiting ring; 7. Ladder frame; 8. Hollow block; 9. Threaded cylinder; 10. Box body; 11. U-shaped plate; 12. First bearing; 13. Connecting cylinder; 14. Worm gear; 15. Threaded column; 16. First round hole; 17. Second bearing; 18. Second round hole; 19. Third bearing; 20. Worm gear; 21. Turntable; 22. First railing; 23. Second railing; 24. Through hole; 25. Limiting round hole; 26. Second rectangular hole; 27. Limiting cylinder; 28. Magnetic ring. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] like Figures 1 to 7As shown, an auxiliary boarding ladder includes a central horizontal plate 1. A left horizontal plate 2 and a right horizontal plate 3 are fitted to the bottom of the central horizontal plate 1. Both the left horizontal plate 2 and the right horizontal plate 3 have first rectangular holes 4 inside. A rectangular block 5 is fitted to the inner wall of the first rectangular hole 4. The upper surface of the rectangular block 5 is fixedly connected to the bottom of the central horizontal plate 1. A limit ring 6 is fixedly connected to the surface of the rectangular block 5. The bottoms of the left horizontal plate 2 and the right horizontal plate 3 are both fitted to the upper surface of the limit ring 6. A ladder frame 7 is fixedly connected to the bottoms of both the left horizontal plate 2 and the right horizontal plate 3. Hollow blocks 8 are fixedly connected to the bottoms of both the left horizontal plate 2 and the right horizontal plate 3. A threaded cylinder 9 is fixedly connected to the inner wall of the hollow block 8. A box 10 is fixedly connected to the bottom of the central horizontal plate 1. A U-shaped plate 11 is fixedly connected to the bottom of the central horizontal plate 1. A first bearing 12 is fixedly connected to the inner wall of the U-shaped plate 11. The inner ring of bearing 12 is fixedly connected to a connecting cylinder 13, and a worm gear 14 is fixedly connected to the surface of the connecting cylinder 13. Threaded columns 15 are fixedly connected to both ends of the connecting cylinder 13. First circular holes 16 are opened on both the left and right sides of the box body 10. Second bearings 17 are fixedly connected to the inner wall of the first circular holes 16 and the surface of the threaded columns 15. Second circular holes 18 are opened on both the front and rear sides of the box body 10. Third bearings 19 are fixedly connected to the inner wall of the second circular holes 18. A worm 20 is fixedly connected to the inner ring of the third bearing 19. The worm 20 meshes with the worm gear 14. A turntable 21 is fixedly connected to the front of the worm 20. A first railing 22 is fixedly connected to the upper surface of the middle horizontal plate 1. Second railings 23 are fixedly connected to the upper surfaces of the left horizontal plate 2 and the right horizontal plate 3. Through holes 24 are opened inside the left horizontal plate 2 and the right horizontal plate 3.

[0026] The length of the first rectangular hole 4 is greater than the length of the rectangular block 5, and the width of the first rectangular hole 4 is equal to the width of the rectangular block 5.

[0027] It should be noted that, through the cooperation of the first rectangular hole 4, the rectangular block 5 and the limiting ring 6, the left horizontal plate 2 and the right horizontal plate 3 can only move to the left or right. When the user rotates the turntable 21, the worm gear 20 rotates through the turntable 21. Then, through the cooperation of the worm gear 20 and the worm wheel 14, the threaded column 15 rotates. At this time, through the cooperation of the threaded column 15 and the threaded cylinder 9, the distance between the left horizontal plate 2 and the right horizontal plate 3 changes. Through the first railing 22 and the second railing 23, pedestrians on the middle horizontal plate 1, the left horizontal plate 2 and the right horizontal plate 3 can be protected.

[0028] like Figures 1 to 4 As shown, a limiting circular hole 25 is provided inside the middle horizontal plate 1, and a second rectangular hole 26 is provided inside the left horizontal plate 2 and the right horizontal plate 3. A limiting cylinder 27 is attached to the inner wall of the limiting circular hole 25 and the inner wall of the second rectangular hole 26. A magnetic ring 28 is fixedly connected to the surface of the limiting cylinder 27, and the bottom of the magnetic ring 28 is attached to the upper surface of the middle horizontal plate 1.

[0029] The diameter of the limiting cylinder 27 is smaller than the length of the second rectangular hole 26, and the diameter of the limiting cylinder 27 is equal to the width of the second rectangular hole 26.

[0030] It should be noted that when the limiting cylinder 27 is inserted into the limiting hole 25, the magnetic ring 28 attracts the middle horizontal plate 1, making it difficult for the limiting cylinder 27 to move out of the limiting hole 25. When the limiting cylinder 27 is inserted into the limiting hole 25, the cooperation of the limiting cylinder 27, the limiting hole 25, and the second rectangular hole 26 prevents the distance between the left horizontal plate 2 and the right horizontal plate 3 from increasing further after reaching a specified size. At the same time, by setting multiple limiting holes 25 at equal intervals on the middle horizontal plate 1, and by inserting the limiting cylinder 27 into the limiting holes 25 at different positions, the maximum distance between the left horizontal plate 2 and the right horizontal plate 3 can be changed.

[0031] The working principle of this utility model is as follows: First, the limiting cylinder 27 is pulled out from the limiting hole 25. Then, the limiting cylinder 27 is inserted into the limiting hole 25 at the designated position. At this time, the magnetic ring 28 attracts the centering plate 1, making it difficult for the limiting cylinder 27 to move out of the limiting hole 25. Then, by rotating the turntable 21, the worm 20 is rotated, and through the cooperation of the worm 20 and the worm wheel 14, the threaded column 15 is rotated. At this time, through the cooperation of the threaded column 15 and the threaded cylinder 9, the distance between the left horizontal plate 2 and the right horizontal plate 3 is changed. When the end of the second rectangular hole 26 contacts the limiting cylinder 27, through the cooperation of the limiting cylinder 27, the limiting hole 25 and the second rectangular hole 26, the distance between the left horizontal plate 2 and the right horizontal plate 3 can no longer increase after reaching the designated size. At this time, the length of the auxiliary boarding ladder can reach a suitable size.

[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An auxiliary boarding ladder, characterized in that: The system includes a middle horizontal plate (1), with a left horizontal plate (2) and a right horizontal plate (3) attached to the bottom of the middle horizontal plate (1). A first rectangular hole (4) is provided inside both the left horizontal plate (2) and the right horizontal plate (3). A rectangular block (5) is attached to the inner wall of the first rectangular hole (4). The upper surface of the rectangular block (5) is fixedly connected to the bottom of the middle horizontal plate (1). A limiting ring (6) is fixedly connected to the surface of the rectangular block (5). The bottom of the left horizontal plate (2) and the bottom of the right horizontal plate (3) are attached to the upper surface of the limiting ring (6). A ladder frame (7) is fixedly connected to the bottom of both the left horizontal plate (2) and the right horizontal plate (3). A hollow block (8) is fixedly connected to the bottom of both the left horizontal plate (2) and the right horizontal plate (3). A threaded cylinder (9) is fixedly connected to the inner wall of the hollow block (8). A box body (10) is fixedly connected to the bottom of the middle horizontal plate (1). A U-shaped plate (11) is fixedly connected to the box body (10). A first bearing (12) is fixedly connected to the inner wall of the U-shaped plate (11). A connecting cylinder (13) is fixedly connected to the inner ring of the first bearing (12). A worm wheel (14) is fixedly connected to the surface of the connecting cylinder (13). Threaded columns (15) are fixedly connected to both the left and right ends of the connecting cylinder (13). A first circular hole (16) is opened on both the left and right sides of the box body (10). A second bearing (17) is fixedly connected to the inner wall of the first circular hole (16) and the surface of the threaded column (15). A second circular hole (18) is opened on both the front and rear sides of the box body (10). A third bearing (19) is fixedly connected to the inner wall of the second circular hole (18). A worm (20) is fixedly connected to the inner ring of the third bearing (19). The worm (20) meshes with the worm wheel (14). A turntable (21) is fixedly connected to the front of the worm (20).

2. The auxiliary boarding ladder according to claim 1, characterized in that: The length of the first rectangular hole (4) is greater than the length of the rectangular block (5), and the width of the first rectangular hole (4) is equal to the width of the rectangular block (5).

3. The auxiliary boarding ladder according to claim 1, characterized in that: The upper surface of the middle horizontal plate (1) is fixedly connected to a first railing (22), and the upper surfaces of the left horizontal plate (2) and the right horizontal plate (3) are both fixedly connected to a second railing (23).

4. The auxiliary boarding ladder according to claim 1, characterized in that: Both the interior of the left horizontal plate (2) and the interior of the right horizontal plate (3) are provided with through holes (24).

5. The auxiliary boarding ladder according to claim 1, characterized in that: The middle horizontal plate (1) has a limiting circular hole (25) inside. The left horizontal plate (2) and the right horizontal plate (3) both have a second rectangular hole (26) inside. The inner wall of the limiting circular hole (25) and the inner wall of the second rectangular hole (26) are fitted together with a limiting cylinder (27). A magnetic ring (28) is fixedly connected to the surface of the limiting cylinder (27). The bottom of the magnetic ring (28) is fitted with the upper surface of the middle horizontal plate (1).

6. The auxiliary boarding ladder according to claim 5, characterized in that: The diameter of the limiting cylinder (27) is smaller than the length of the second rectangular hole (26), and the diameter of the limiting cylinder (27) is equal to the width of the second rectangular hole (26).

Images