Emergency telescopic arm boarding ladder adaptive to multiple deck heights

Abstract

The emergency telescopic arm boarding ladder comprises a base and a connecting ladder, two sets of first rotating blocks are fixedly connected to the upper portion of one side of the base, a rotating ladder is rotatably connected between the first rotating blocks on the two sides, and a telescopic ladder is slidably connected to the outer side of the lower portion of the rotating ladder; two sets of second rotating blocks are fixedly connected to the two sides of one end of the extension ladder, a first motor is fixedly connected to one side of the second rotating block on one side, the power end of the first motor penetrates through the second rotating block to be fixedly connected with a transition ladder, and two sets of connecting pieces matched with each other are fixedly connected to the side, facing the connecting ladder, of the transition ladder; side sliding grooves are formed in the two sides of the extension ladder, sliding blocks are fixedly connected to the two sides of the rotating ladder, and the sliding blocks are slidably connected to the interiors of the side sliding grooves, rapid response can be achieved in an emergency scene, the assembled ladder assembly is firm in connection and free of looseness during operation, and compared with a traditional lap joint structure, the safety and reliability are improved.

Description

Technical Field

[0001] This invention relates to the field of ship emergency equipment technology, specifically to an emergency telescopic boom boarding ladder adaptable to multiple deck heights. Background Technology

[0002] A marine emergency boarding bridge is a temporary, mobile access device used to safely connect a dock to a ship's deck in emergency situations or when conventional boarding facilities fail, providing a reliable passage for personnel evacuation and cargo transport.

[0003] Current traditional marine emergency boarding bridges cannot meet the emergency needs of rapid assembly and stable operation. Assembly is cumbersome and emergency response is slow: after the ladder frame is disassembled, assembly requires multiple people to work together, relies on hoisting or complex tools, and the assembly of a single set takes a long time, making it impossible to respond quickly to emergency scenarios; the use scenarios are complex: due to the difference in the height of the hull and the distance from the shore, fixed models of boarding ladders cannot guarantee safe docking. Summary of the Invention

[0004] The purpose of this invention is to provide an emergency telescopic boom boarding ladder that is adaptable to multiple deck heights, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an emergency telescopic boom boarding ladder adaptable to multiple deck heights, comprising a base and a connecting ladder. Two sets of first rotating blocks are fixedly connected to the upper part of one side of the base. A rotating ladder is rotatably connected between the two first rotating blocks. A telescopic ladder is slidably connected to the lower outer side of the rotating ladder. Two sets of second rotating blocks are fixedly connected to both sides of one end of the telescopic ladder. A first motor is fixedly connected to one side of one of the second rotating blocks. A transition ladder is fixedly connected to the power end of the first motor through the second rotating blocks. Two sets of mutually cooperating ladders are fixedly connected to the transition ladder and the connecting ladder facing each other on one side. The connecting piece of the telescopic ladder has side sliding grooves on both sides. The rotating ladder has sliding blocks fixedly connected to both sides. The sliding blocks are slidably connected inside the side sliding grooves. An upper connecting block is fixedly connected to the outside of the sliding block. An upper rotating plate is fixedly connected to the lower part of the upper connecting block. An upper rotating ring is rotatably connected to the outside of the upper rotating plate. A first hydraulic cylinder is fixedly connected to the lower part of the upper rotating ring. A lower rotating ring is fixedly connected to the lower part of the first hydraulic cylinder. A lower rotating plate is rotatably connected to the lower inner side of the lower rotating ring. A lower connecting block is fixedly connected to the lower part of the lower rotating plate. The lower connecting block is fixedly connected to both sides of the base.

[0006] Preferably, the lower part of the rotating ladder has sliding grooves on both sides, the lower part of the sliding block is fixedly connected to a mounting frame, the mounting frame is rotatably connected to a threaded rod, the outer side of the threaded rod is threadedly connected to a moving block, the moving block is slidably connected to the inside of the mounting frame, one side of the telescopic ladder and one side of the moving block have mutually matching threaded holes, one end of the threaded rod is fixedly connected to a rotating rod, the other end of the rotating rod is rotatably connected to one side of the mounting frame, the outer side of the rotating rods on both sides is fitted with a transmission belt, one side of the mounting frame is fixedly connected to a second motor, the power end of the second motor is fixedly connected to one end of the rotating rod on one side.

[0007] Preferably, the upper part of the rotating ladder is fixedly connected to a first step, the upper part of the telescopic ladder is fixedly connected to a second step, the lower part of the rotating ladder is provided with a receiving groove, and the second step is slidably connected inside the receiving groove.

[0008] Preferably, the upper part of the spiral ladder and telescopic ladder is fixedly connected with a guardrail.

[0009] Preferably, the telescopic ladder has first anti-slip textures on both sides of its upper part, and the transition ladder and connecting ladder have second anti-slip textures on their upper parts.

[0010] Preferably, one end of the rotating ladder is fixedly connected to two sets of third rotating blocks, the third rotating blocks are rotatably connected to a rotating shaft, a baffle is fixedly connected to the outside of the rotating shaft, a torsion spring is fixedly connected between the baffle and the third rotating blocks, and the torsion spring is sleeved on the outside of the rotating shaft.

[0011] Preferably, a connecting frame is fixedly connected to both sides of the base, and a second hydraulic cylinder is fixedly connected to the upper part of the connecting frame. The power end of the second hydraulic cylinder passes through the connecting frame and is fixedly connected to a support pad.

[0012] Preferably, a first rubber pad is fixedly connected to the lower part of the connecting ladder, two sets of connecting cylinders are fixedly connected to the upper part of the base, a lifting plate is slidably connected inside the connecting cylinder, a lifting rod is fixedly connected to the upper part of the lifting plate, a second rubber pad is fixedly connected to the upper part of the lifting rods on both sides through the connecting cylinder, and a spring is fixedly connected between the lifting plate and the connecting cylinder, the spring being sleeved on the outside of the lifting rod.

[0013] Preferably, a hook is fixedly connected to one side of the base, four sets of connecting plates are fixedly connected to the lower part of the base, an axle is rotatably connected between two sets of connecting plates on the same side, and wheels are fixedly connected to both sides of the axle through the connecting plates.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention uses a threaded hole and connecting piece assembly design, which can complete the assembly of the entire ladder frame without complicated tools. It improves the assembly efficiency compared to the traditional boarding bridge, can respond quickly in emergency scenarios, and buy time for personnel evacuation. After assembly, the ladder frame is firmly connected and there is no loosening during operation. The safety and reliability are improved compared to the traditional overlapping structure.

[0016] 2. This invention avoids the misalignment problem of traditional methods that require adjustment before assembly by first assembling the ladder frame in a modular fashion and then adjusting the angle and length of the whole structure. The docking accuracy error is low and there is no need for repeated adjustments. The stepless adjustment of the rotating ladder angle and the telescopic ladder length works in tandem to adapt to different ship berthing heights and distances, thus expanding the range of applications compared to traditional boarding bridges. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional cross-sectional view of the present invention;

[0020] Figure 4 This is a three-dimensional cross-sectional view of the present invention.

[0021] In the diagram: 1. Base; 2. First rotating block; 3. Spiral staircase; 4. Telescopic staircase; 5. Side sliding groove; 6. Sliding block; 7. First step; 8. Receiving groove; 9. Second step; 10. Guardrail; 11. Upper connecting block; 12. Upper rotating plate; 13. Upper rotating ring; 14. First hydraulic cylinder; 15. Lower rotating ring; 16. Lower rotating plate; 17. Lower connecting block; 18. First anti-slip texture; 19. Second rotating block; 20. First motor; 21. Transition staircase; 22. Connecting plate; 23. Connecting staircase; 24. Second anti-slip texture 25. Third rotating block; 26. Rotating shaft; 27. Baffle; 28. Torsion spring; 29. ​​Connecting frame; 30. Second hydraulic cylinder; 31. Support pad; 32. Hook; 33. First rubber pad; 34. Connecting cylinder; 35. Lifting plate; 36. Lifting rod; 37. Second rubber pad; 38. Spring; 39. Lower sliding groove; 40. Mounting frame; 41. Threaded rod; 42. Rotating rod; 43. Second motor; 44. Moving block; 45. Threaded hole; 46. Transmission belt; 47. Connecting plate; 48. Axle; 49. Wheel. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-4 This invention provides a technical solution: an emergency telescopic boom boarding ladder adaptable to multiple deck heights, comprising a base 1 and a connecting ladder 23. Two sets of first rotating blocks 2 are welded and fixedly connected to the upper part of one side of the base 1. A rotating ladder 3 is rotatably connected between the two first rotating blocks 2 via deep groove ball bearings. A telescopic ladder 4 is slidably connected to the lower outer side of the rotating ladder 3 via clearance fit. Two sets of second rotating blocks 19 are welded and fixedly connected to both sides of one end of the telescopic ladder 4. A first motor 20 is bolted to one side of the second rotating block 19. The power end of the first motor 20 penetrates the second rotating block 19 and is fixedly connected to a transition ladder 21 via a coupling. Two sets of mutually cooperating connecting plates 22 are welded and fixedly connected to the transition ladder 21 and the connecting ladder 23 on opposite sides, achieving a detachable connection via bolts. Side sliding openings are provided on both sides of the telescopic ladder 4. The sliding groove 5 and the rotating ladder 3 are fixedly connected to the two sides by welding with sliding blocks 6. The sliding blocks 6 are slidably connected to the inside of the side sliding groove 5 through clearance fit, guiding the sliding of the telescopic ladder 4. The outer side of the sliding block 6 is fixedly connected to the upper connecting block 11 by welding. The lower part of the upper connecting block 11 is fixedly connected to the upper rotating plate 12 by welding. The outer side of the upper rotating plate 12 is rotatably connected to the upper rotating ring 13 by deep groove ball bearing. The lower part of the upper rotating ring 13 is fixedly connected to the first hydraulic cylinder 14 by bolt. The lower part of the first hydraulic cylinder 14 is fixedly connected to the lower rotating ring 15 by bolt. The lower inner side of the lower rotating ring 15 is rotatably connected to the lower rotating plate 16 by deep groove ball bearing. The lower part of the lower rotating plate 16 is fixedly connected to the lower connecting block 17 by welding. The lower connecting block 17 is fixedly connected to the two sides of the base 1 by welding, providing the angle adjustment power for the rotating ladder 3.

[0024] The lower part of the spiral staircase 3 has rectangular sliding grooves 39 on both sides. The lower part of the sliding block 6 is fixedly connected to the mounting frame 40 by welding. The mounting frame 40 is rotatably connected to the threaded rod 41 through a deep groove ball bearing. The outer side of the threaded rod 41 is connected to the moving block 44 by thread. The moving block 44 is slidably connected to the inside of the mounting frame 40 by clearance fit. The outer side of one end of the telescopic ladder 4 and the side of the moving block 44 have mutually matching threaded holes 45. The moving block 44 is fixed to the telescopic ladder 4 by bolts. One end of the threaded rod 41 is fixedly connected to the rotating rod 42 by welding. The other end of the rotating rod 42 is rotatably connected to one side of the mounting frame 40 through a deep groove ball bearing. The outer side of the rotating rods 42 on both sides is fitted with a transmission belt 46 to achieve synchronous drive. The outer side of one side of the mounting frame 40 is fixedly connected to the second motor 43 by bolts. The power end of the second motor 43 is fixedly connected to one end of the rotating rod 42 on one side through a coupling to provide power for the telescopic ladder 4 to extend and retract.

[0025] The upper part of the spiral staircase 3 is fixedly connected to the first step 7 by welding, and the upper part of the telescopic staircase 4 is fixedly connected to the second step 9 by welding. The lower part of the spiral staircase 3 is provided with a rectangular receiving groove 8. The second step 9 is slidably connected to the receiving groove 8 through clearance fit, so as to realize the storage when the telescopic staircase 4 is retracted, reducing the space occupied.

[0026] The upper part of the spiral staircase 3 and the telescopic staircase 4 is fixedly connected to the guardrail 10 by welding to ensure walking safety;

[0027] The upper sides of the telescopic ladder 4 are stamped with first anti-slip texture 18, and the upper parts of the transition ladder 21 and connecting ladder 23 are stamped with second anti-slip texture 24 to improve anti-slip performance in humid environments.

[0028] Two sets of third rotating blocks 25 are fixedly connected to one end of the spiral staircase 3 by welding. The third rotating blocks 25 are rotatably connected to a rotating shaft 26 by a deep groove ball bearing. A baffle 27 is fixedly connected to the outside of the rotating shaft 26 by welding. A torsion spring 28 is fixedly connected to the baffle 27 and the third rotating blocks 25 by spot welding. The torsion spring 28 is sleeved on the outside of the rotating shaft 26. Under normal conditions, it pushes the baffle 27 to fit against the joint between the spiral staircase 3 and the telescopic ladder 4 to eliminate the height difference and prevent people from tripping.

[0029] The base 1 is fixedly connected to the two sides by welding with a connecting frame 29. The upper part of the connecting frame 29 is fixedly connected to a second hydraulic cylinder 30 by bolts. The power end of the second hydraulic cylinder 30 penetrates the connecting frame 29 and is fixedly connected to a support pad 31 by bolts. This is used to fix the base 1 during operation and prevent displacement.

[0030] The lower part of the connecting ladder 23 is fixedly connected to the first rubber pad 33 by adhesive to avoid damage to the hull during docking. The upper part of the base 1 is fixedly connected to two sets of connecting cylinders 34 by welding. Inside the connecting cylinders 34, there are lifting plates 35 that are slidably connected by clearance fit. The upper part of the lifting plates 35 is fixedly connected to the lifting rods 36 by welding. The upper parts of the lifting rods 36 on both sides penetrate the connecting cylinders 34 and are fixedly connected to the second rubber pads 37 by welding. The lifting plates 35 and the connecting cylinders 34 are fixedly connected by spot welding to the springs 38. The springs 38 are sleeved on the outside of the lifting rods 36 to provide a buffer for the retraction of the rotating ladder 3.

[0031] A hook 32 is fixedly connected to one side of the base 1 by welding for hoisting and transportation. Four sets of connecting plates 47 are fixedly connected to the lower part of the base 1 by welding. An axle 48 is rotatably connected between two sets of connecting plates 47 on the same side by a deep groove ball bearing. Wheels 49 are fixedly connected to both sides of the axle 48 by welding through the connecting plates 47.

[0032] Working principle: When using this invention: Align the telescopic ladder 4 with the receiving groove 8 at the bottom of the rotating ladder 3, and push it in along the side sliding groove 5 and the lower sliding groove 39 so that the second step 9 is embedded in the receiving groove 8; start the second motor 43 to drive the rotating rod 42 and the threaded rod 41 to rotate, which drives the moving block 44 to slide along the mounting frame 40 until the threaded hole 45 of the moving block 44 is aligned with the threaded hole 45 on the outside of the telescopic ladder 4; fix the moving block 44 to the telescopic ladder 4 by passing the bolt through the threaded hole 45, and complete the assembly of the telescopic ladder 4 and the rotating ladder 3. At this time, the torsion spring 28 pushes the baffle 27 to fit against the joint of the two ladders to eliminate the height difference. By passing the bolt hole of the connecting piece 22, the connecting ladder 23 and the transition ladder 21 are connected, and the modular assembly of the ladder frame is completed.

[0033] The boarding bridge is pushed to the target work point by the wheels 49 at the bottom of the base 1, or it is hoisted and transferred by the hook 32; the second hydraulic cylinder 30 is activated to push the support pad 31 to fit against the deck and fix the position of the base 1 to prevent displacement during operation;

[0034] Start the first hydraulic cylinder 14, and the piston rod extends and retracts to drive the upper rotating ring 13, the upper rotating plate 12 and the lower rotating ring 15, the lower rotating plate 16 to rotate relative to each other, thereby driving the rotating ladder 3 to rotate around the first rotating block 2; adjust to the angle suitable for the ship's berthing, stop the first hydraulic cylinder 14, and the hydraulic self-locking fixes the angle.

[0035] Prepare to start the second motor 43, drive the rotating rod 42 on one side to rotate, and drive the rotating rod 42 and threaded rod 41 on the other side to rotate synchronously through the transmission belt 46; the threaded rod 41 drives the moving block 44 to slide along the mounting frame 40, and drives the telescopic ladder 4 to extend along the side sliding groove 5 and the lower sliding groove 39. The second step 9 slides out from the receiving groove 8 and extends to the target length.

[0036] Start the first motor 20 to drive the transition ladder 21 to rotate around the second rotating block 19, adjust the connecting ladder 23 to be flush with the hull, and complete the overall docking of the boarding bridge; personnel board or evacuate the ship via the first step 7, the second step 9, the transition ladder 21, and the connecting ladder 23, with the guardrail 10 and anti-slip texture ensuring safety.

[0037] After the operation is completed, the second motor 43 is started in reverse to drive the telescopic ladder 4 back into the receiving slot 8; the first motor 20 is started in reverse to drive the connecting ladder 23 to rotate perpendicular to the telescopic ladder 4 via the transition ladder 21; the first hydraulic cylinder 14 is started in reverse to drive the rotating ladder 3 back to above the base 1; the lower part of the rotating ladder 3 contacts the second rubber pad 37, pushing the lifting rod 36 and the lifting plate 35 to compress the spring 38, achieving elastic buffering and avoiding structural collision.

[0038] 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 a process, method, article, or apparatus.

[0039] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An emergency telescopic boom boarding ladder adaptable to multiple deck heights, comprising a base (1) and a connecting ladder (23), characterized in that: Two sets of first rotating blocks (2) are fixedly connected to the upper part of one side of the base (1). A rotating ladder (3) is rotatably connected between the first rotating blocks (2) on both sides. A telescopic ladder (4) is slidably connected to the lower outer side of the rotating ladder (3). Two sets of second rotating blocks (19) are fixedly connected to both sides of one end of the telescopic ladder (4). A first motor (20) is fixedly connected to one side of one of the second rotating blocks (19). A transition ladder (21) is fixedly connected to the power end of the first motor (20) through the second rotating block (19). Two sets of mutually cooperating connecting pieces (22) are fixedly connected to the transition ladder (21) and the connecting ladder (23) facing each other on one side. Side sliding grooves (5) are opened on both sides of the telescopic ladder (4). The rotating ladder (3) Sliding blocks (6) are fixedly connected to both sides. The sliding blocks (6) are slidably connected to the inside of the side sliding groove (5). An upper connecting block (11) is fixedly connected to the outside of the sliding blocks (6). An upper rotating plate (12) is fixedly connected to the lower part of the upper connecting block (11). An upper rotating ring (13) is rotatably connected to the outside of the upper rotating plate (12). A first hydraulic cylinder (14) is fixedly connected to the lower part of the upper rotating ring (13). A lower rotating ring (15) is fixedly connected to the lower part of the first hydraulic cylinder (14). A lower rotating plate (16) is rotatably connected to the inner side of the lower part of the lower rotating ring (15). A lower connecting block (17) is fixedly connected to the lower part of the lower rotating plate (16). The lower connecting block (17) is fixedly connected to both sides of the base (1).

2. The emergency telescopic boom boarding ladder adaptable to multiple deck heights as described in claim 1, characterized in that: The rotating ladder (3) has lower sliding grooves (39) on both sides of the lower part. The sliding block (6) is fixedly connected to the lower part of the mounting frame (40). The mounting frame (40) is rotatably connected to the inside of the mounting frame (40). The threaded rod (41) is threadedly connected to the outside of the threaded rod (41). The moving block (44) is slidably connected to the inside of the mounting frame (40). The telescopic ladder (4) has threaded holes (45) that cooperate with each other on the outside of one end and the side of the moving block (44). The threaded rod (41) is fixedly connected to one end of the rotating rod (42). The other end of the rotating rod (42) is rotatably connected to one side of the mounting frame (40). The rotating rod (42) on both sides is fitted with a transmission belt (46). The second motor (43) is fixedly connected to the outside of one side of the mounting frame (40). The power end of the second motor (43) is fixedly connected to one end of the rotating rod (42) on one side.

3. The emergency telescopic boom boarding ladder adaptable to multiple deck heights as described in claim 1, characterized in that: The upper part of the rotating ladder (3) is fixedly connected to a first step (7), the upper part of the telescopic ladder (4) is fixedly connected to a second step (9), the lower part of the rotating ladder (3) is provided with a receiving groove (8), and the second step (9) is slidably connected to the inside of the receiving groove (8).

4. The emergency telescopic boom boarding ladder adaptable to multiple deck heights as described in claim 1, characterized in that: The upper part of the spiral ladder (3) and telescopic ladder (4) is fixedly connected with guardrails (10).

5. The emergency telescopic boom boarding ladder adaptable to multiple deck heights as described in claim 1, characterized in that: The telescopic ladder (4) has first anti-slip textures (18) on both sides of the upper part, and the transition ladder (21) and connecting ladder (23) have second anti-slip textures (24) on the upper part.

6. The emergency telescopic boom boarding ladder adaptable to multiple deck heights as described in claim 1, characterized in that: Two sets of third rotating blocks (25) are fixedly connected to one end of the rotating ladder (3). A rotating shaft (26) is rotatably connected between the third rotating blocks (25). A baffle (27) is fixedly connected to the outside of the rotating shaft (26). A torsion spring (28) is fixedly connected between the baffle (27) and the third rotating blocks (25). The torsion spring (28) is sleeved on the outside of the rotating shaft (26).

7. The emergency telescopic boom boarding ladder adaptable to multiple deck heights as described in claim 1, characterized in that: The base (1) is fixedly connected to the two sides of the connecting frame (29), and the upper part of the connecting frame (29) is fixedly connected to the second hydraulic cylinder (30). The power end of the second hydraulic cylinder (30) passes through the connecting frame (29) and is fixedly connected to the support pad (31).

8. The emergency telescopic boom boarding ladder adaptable to multiple deck heights as described in claim 1, characterized in that: The lower part of the connecting ladder (23) is fixedly connected to a first rubber pad (33), and the upper part of the base (1) is fixedly connected to two sets of connecting cylinders (34). The connecting cylinders (34) are slidably connected to a lifting plate (35), and the upper part of the lifting plate (35) is fixedly connected to a lifting rod (36). The upper parts of the lifting rods (36) on both sides penetrate the connecting cylinders (34) and are fixedly connected to a second rubber pad (37). A spring (38) is fixedly connected between the lifting plate (35) and the connecting cylinder (34), and the spring (38) is sleeved on the outside of the lifting rod (36).

9. The emergency telescopic boom boarding ladder adaptable to multiple deck heights as described in claim 1, characterized in that: A hook (32) is fixedly connected to one side of the base (1), and four sets of connecting plates (47) are fixedly connected to the lower part of the base (1). An axle (48) is rotatably connected between two sets of connecting plates (47) on the same side. Wheels (49) are fixedly connected to both sides of the axle (48) through the connecting plates (47).

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