Movable boarding ladder for marine hydro meteorological shore base

Abstract

The invention relates to the technical field of boarding ladders, and discloses a movable boarding ladder for a marine hydro meteorology shore-based, the boarding ladder comprises a mounting case, the upper end face of the mounting case is fixedly connected with a boarding platform, the lower end of the mounting case is provided with a crawler walking mechanism for moving, the middle of the upper end face of the boarding platform is provided with a supporting stand column, and the upper end face of the supporting stand column is fixedly connected with the mounting case. According to the marine hydrometeorological shore-based detector, the installation machine box can be conveniently moved through the arranged crawler walking mechanism, so that the marine hydrometeorological shore-based detector can be conveniently installed according to the berthing time and operation requirements of a ship when the marine hydrometeorological shore-based detector is used, and the marine hydrometeorological shore-based detector can be conveniently and rapidly installed. And meanwhile, the driving assembly and the adjusting assembly can adjust the angle of the first supporting frame and the angle of the second supporting frame in the using process, and therefore the ship supporting device can be suitable for different types of ships.

Description

Technical Field

[0001] The invention relates to the technical field of boarding ladders, in particular to a mobile boarding ladder for shore-based marine hydrological and meteorological use. Background Art

[0002] During the development of tanker terminals, particularly those with exposed piers, the dock surface is not completely continuous and is at a high elevation. Ships are subject to frequent and significant pitching and jostling during operations. Due to the large fenders, the distance between the side of docked ships and the dock shoreline is considerable. This makes it difficult for tanker-mounted gangways to connect ships to shore. Therefore, boarding ladders have emerged to ensure safe embarkation and disembarkation.

[0003] For example, a boarding ladder proposed in authorization announcement No. CN115432127B includes a base, a rear end vertical guide device, a fixed ladder frame, a movable ladder frame and a front end adjustment device; the device can reduce the hard impact of the hull swing on the boarding ladder through the buffer mechanism, thereby achieving a buffering and shock-absorbing effect.

[0004] However, in some ports with significant tidal changes, the rise and fall of water levels will affect the boarding facilities. When different types of ships dock, it is often necessary to set the position of the boarding ladder according to actual needs. However, the above-mentioned boarding ladder can only be installed at a specific position on the dock and cannot be moved. At the same time, it is impossible to adjust the height of the boarding according to actual needs. For this reason, we provide a mobile boarding ladder for marine hydrological and meteorological shore-based use to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a mobile boarding ladder for marine hydrological and meteorological shore-based use. The boarding ladder can facilitate the movement of the installation chassis through the provided crawler walking mechanism. At the same time, the provided driving assembly and adjustment assembly can adjust the angle of the first support frame and the second support frame during use, so that it can be suitable for different types of ships and can also adapt to the influence of tidal fluctuations.

[0006] To achieve the above object, the present invention provides the following technical solutions: A mobile boarding ladder for marine hydrometeorological shore-based use, comprising a mounting chassis. The upper end surface of the mounting chassis is fixedly connected with a boarding platform. The lower end of the mounting chassis is provided with a crawler walking mechanism for movement. The middle of the upper end surface of the boarding platform is provided with a support column. The upper end of the support column is fixedly connected with a top mounting block. A marine hydrometeorological shore-based detector is mounted on the top mounting block. Both ends of one side of the boarding platform are fixedly connected with rotating supports. A rotating shaft is rotatably connected to the upper end of each rotating support. A first support frame is fixedly connected between the opposite ends of the rotating shafts. A first ladder board is arranged in the first support frame. A driving component for driving the first support frame to rotate along the rotating support is arranged on the top mounting block. An anti-overturning balance component is arranged in the mounting chassis. The end of the first support frame far away from the boarding platform is rotatably connected with a second support frame. A second ladder board is arranged in the second support frame. An adjusting component for adjusting the angle of the second support frame is arranged on the first support frame. A tripod is arranged at the end of the second support frame far away from the first support frame. A support component is arranged at the lower end of the tripod. Side ladder components for facilitating boarding the boarding platform are arranged on both sides of the boarding platform.

[0007] As a further scheme of the present invention: The driving component includes a transfer seat. The transfer seats are respectively fixedly connected to both ends of one side of the top mounting block. A first hydraulic cylinder is rotatably connected in each transfer seat. The output ends of the two first hydraulic cylinders are respectively rotatably connected to both sides of the first support frame.

[0008] As a still further scheme of the present invention: The balance component includes a sliding plate. The sliding plate is arranged inside the mounting chassis. A counterweight is fixedly connected to the end of the sliding plate far away from the first support frame. Second guide wheels are mounted on four surfaces of the end of the sliding plate far away from the counterweight. First guide wheels for limiting the sliding plate are arranged on four surfaces of the end of the mounting chassis close to the counterweight. A follow-up component for matching the angle of the first support frame is arranged at the end of the mounting chassis far away from the counterweight.

[0009] As a further aspect of the present invention: The follower assembly includes a first transmission shaft, the first transmission shaft is rotatably connected to a position of the rotating support below the adapter shaft, both ends of the first transmission shaft are fixedly connected with first gears, and both ends of the adapter shaft are respectively installed with second gears meshing with the first gears. Both ends of the first transmission shaft are also installed with first sprockets. A second transmission shaft is also rotatably connected inside the installation chassis. Both ends of the second transmission shaft are installed with second sprockets. Chains are installed between the second sprockets and the first sprockets. One end of the sliding plate away from the counterweight is fixedly connected with a U-shaped frame. Rack teeth are provided at the lower ends of both side rods of the U-shaped frame. A bottom support plate is also fixedly connected to the middle of the lower end of the sliding plate. An end sealing plate is fixedly connected between the bottom support plate and the end of the U-shaped frame away from the sliding plate. Third gears are also fixedly connected to both ends of the second transmission shaft, and the third gears are respectively engaged with the rack teeth.

[0010] As a further aspect of the present invention: The adjusting assembly includes two second hydraulic cylinders, the two second hydraulic cylinders are respectively rotatably connected to both sides of one end of the first support frame away from the boarding platform, and the two second hydraulic cylinders are respectively rotatably connected to both sides of the second support frame.

[0011] As a further aspect of the present invention: The support assembly includes four third hydraulic cylinders, the four third hydraulic cylinders are respectively fixedly connected to the four corners of the triangular frame, universal wheels are installed at the output ends of the third hydraulic cylinders, and a plurality of step plates are fixedly connected to the inclined frames of the triangular frame.

[0012] As a further aspect of the present invention: The side ladder assembly includes side step ladders, the side step ladders are respectively rotatably connected to both sides of the boarding platform, one end of the side step ladder close to the boarding platform is fixedly connected with a bottom rod, connection seats are fixedly connected to positions of the boarding platform close to the side step ladders, a fourth hydraulic cylinder is rotatably connected to the connection seats, and the output end of the fourth hydraulic cylinder is rotatably connected to the bottom rod.

[0013] As a further aspect of the present invention: Guardrails are provided on both sides of the triangular frame, the second support frame, the first support frame and the side step ladders, and at the edge position of the upper end surface of the boarding platform.

[0014] As a further aspect of the present invention: The pitch diameter of the second gear is larger than the pitch diameter of the first gear, and the diameter of the first sprocket is larger than the diameter of the second sprocket.

[0015] As a further aspect of the present invention: A hydraulic system for providing hydraulic energy is also provided on the boarding platform.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The crawler traveling mechanism provided by the present invention facilitates the movement of the installation chassis, enabling it to be quickly moved to the designated position for deployment according to the berthing time and operation requirements of the ship during use, greatly improving the flexibility of use. At the same time, the driving component and the adjusting component provided can adjust the angles of the first support frame and the second support frame during use, thereby being applicable to different types of ships and also adapting to the influence brought by tidal fluctuations. The balance component provided inside the installation chassis can ensure the stability of the installation chassis, preventing the first support frame from tipping over due to unstable center of gravity during angle adjustment. At the same time, this device is equipped with an offshore marine hydro-meteorological detector, which can be used as an offshore hydro-meteorological monitoring station when the device is not boarding the ship, further increasing the functionality of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the other side of the present invention; Figure 3 is a schematic structural diagram of the support component in the present invention; Figure 4 is a schematic structural diagram of the driving component in the present invention; Figure 5 is a schematic structural diagram of the side ladder component in the present invention; Figure 6 In the present invention Figure 1 is an enlarged schematic structural diagram of part A; Figure 7 is a schematic structural diagram of the balance component in the present invention; Figure 8 is a schematic cross-sectional structural diagram of the installation chassis in the present invention.

[0018] Wherein: 1, installation chassis; 2, rack; 3, boarding platform; 4, counterweight; 5, support column; 6, top mounting block; 7, offshore marine hydro-meteorological detector; 8, first hydraulic cylinder; 9, first ladder board; 10, second ladder board; 11, tripod; 12, second support frame; 13, second hydraulic cylinder; 14, first support frame; 15, side step ladder; 16, crawler traveling mechanism; 17, first transmission shaft; 18, first sprocket; 19, rotating support; 20, first gear; 21, second gear; 22, adapter shaft; 23, step board; 24, third hydraulic cylinder; 25, universal wheel; 26, adapter seat; 27, bottom rod; 28, fourth hydraulic cylinder; 29, connecting seat; 30, chain; 31, sliding plate; 32, first guide wheel; 33, second guide wheel; 34, second sprocket; 35, U-shaped frame; 36, bottom support plate; 37, third gear; 38, second transmission shaft; 39, guardrail; 40, end seal plate. DETAILED DESCRIPTION OF THE INVENTION

[0019] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-8 , in the embodiment of the present invention, a mobile boarding ladder for marine hydrometeorological shore-based use includes an installation chassis 1. A boarding platform 3 is fixedly connected to the upper end face of the installation chassis 1. A crawler traveling mechanism 16 for movement is installed at the lower end of the installation chassis 1. A support column 5 is installed in the middle of the upper end face of the boarding platform 3. A top mounting block 6 is fixedly connected to the upper end of the support column 5. A marine hydrometeorological shore-based detector 7 is installed on the top mounting block 6. The provided marine hydrometeorological shore-based detector 7 can provide relevant parameters for monitoring marine disasters such as typhoons, storm surges, and tsunamis, and issue early warning information in a timely manner, providing support for disaster prevention and mitigation work in coastal areas. At both ends of one side of the boarding platform 3, rotating supports 19 are fixedly connected. A transfer shaft 22 is rotatably connected to the upper ends of the rotating supports 19. A first support frame 14 is fixedly connected between the opposite ends of the transfer shaft 22. A first ladder board 9 is provided in the first support frame 14. A driving assembly for driving the first support frame 14 to rotate along the rotating support 19 is provided on the top mounting block 6. A balance assembly for preventing the installation chassis 1 from tipping over when the first support frame 14 is adjusted is provided in the installation chassis 1. The end of the first support frame 14 away from the boarding platform 3 is rotatably connected to a second support frame 12. A second ladder board 10 is provided in the second support frame 12. An adjusting assembly for adjusting the angle of the second support frame 12 is provided on the first support frame 14. A tripod 11 is provided at the end of the second support frame 12 away from the first support frame 14. A support assembly is provided at the lower end of the tripod 11. Side ladder assemblies for facilitating boarding the boarding platform 3 are provided on both sides of the boarding platform 3; guardrails 39 are provided at the edge positions of the upper end faces of the tripod 11, the second support frame 12, the first support frame 14, and the boarding platform 3; a hydraulic system for providing hydraulic energy is also provided on the boarding platform 3; during use, the installation chassis 1 can be moved through the provided crawler traveling mechanism 16, thereby improving mobility and facilitating deployment according to actual needs. At the same time, the provided driving assembly can adjust the angle of the first support frame 14, the provided second hydraulic cylinder 13 can adjust the angle of the second support frame 12, and the equipped support assembly can support the tripod 11, so that corresponding deployments can be made according to actual needs. And the provided balance assembly can balance the installation chassis 1 when the angle of the first support frame 14 is adjusted, avoiding the problem of tipping over.

[0021] The driving assembly includes an adapter base 26 which is fixedly connected to both ends of one side of the top mounting block 6 respectively. A first hydraulic cylinder 8 is rotatably connected in each of the adapter bases 26. The output ends of the two first hydraulic cylinders 8 are respectively rotatably connected to both sides of the first support frame 14. When the angle of the first support frame 14 needs to be adjusted, the action of the output end of the first hydraulic cylinder 8 will drive the first support frame 14 to rotate correspondingly along the transfer shaft 22, thereby realizing the corresponding adjustment of the first support frame 14.

[0022] The balance assembly includes a sliding plate 31 which is arranged inside the installation chassis 1. A counterweight 4 is fixedly connected to one end of the sliding plate 31 away from the first support frame 14. Four surfaces of one end of the sliding plate 31 away from the counterweight 4 are each provided with a second guide wheel 33. Four surfaces of one end of the installation chassis 1 close to the counterweight 4 are each provided with a first guide wheel 32 for limiting the sliding plate 31. A follow-up assembly for matching the angle of the first support frame 14 is provided at one end of the installation chassis 1 away from the counterweight 4. During operation, the follow-up assembly will push the counterweight 4 to move correspondingly according to the angle change of the first support frame 14. When the second ladder plate 10 is farther away from the boarding platform 3, the extending distance of the counterweight 4 is longer; on the contrary, the extending distance of the counterweight 4 is smaller. Thus, corresponding displacement can be carried out according to the change of the first support frame 14 to ensure the stability of the installation chassis 1 and prevent tipping over.

[0023] The follower assembly includes a first transmission shaft 17, which is rotatably connected to the rotating support 19 at a position below the transfer shaft 22. Both ends of the first transmission shaft 17 are fixedly connected with first gears 20. Second gears 21 meshing with the first gears 20 are installed at one end of the transfer shaft 22. First sprockets 18 are also installed at both ends of the first transmission shaft 17. A second transmission shaft 38 is also rotatably connected inside the installation chassis 1. Second sprockets 34 are installed at both ends of the second transmission shaft 38. Chains 30 are installed between the second sprockets 34 and the first sprockets 18. One end of the sliding plate 31 away from the counterweight 4 is fixedly connected with a U-shaped frame 35. Rack bars 2 are provided at the lower ends of both side bars of the U-shaped frame 35. A bottom support plate 36 is also fixedly connected to the middle of the lower end of the sliding plate 31. An end sealing plate 40 is fixedly connected between the bottom support plate 36 and one end of the U-shaped frame 35 away from the sliding plate 31. Third gears 37 are also fixedly connected to both ends of the second transmission shaft 38. The third gears 37 are respectively meshed with the rack bars 2; the pitch circle diameter of the second gear 21 is larger than that of the first gear 20, and the diameter of the first sprocket 18 is larger than that of the second sprocket 34; during operation, when the angle of the first support frame 14 changes, it will drive the transfer shaft 22 to rotate. The transfer shaft 22 drives the second gear 21, the second gear 21 drives the first gear 20, the first gear 20 drives the first transmission shaft 17, the first transmission shaft 17 drives the first sprocket 18, the first sprocket 18 drives the chain 30, the chain 30 drives the second sprocket 34, and the second sprocket 34 drives the second transmission shaft 38 to rotate. The rotation of the second transmission shaft 38 drives the third gear 37 to rotate, and the rotation of the third gear 37 drives the rack bar 2, thereby driving the sliding plate 31 to perform corresponding displacement.

[0024] The adjustment assembly includes two second hydraulic cylinders 13, which are respectively rotatably connected to both sides of the first support frame 14 away from one end of the boarding platform 3. The two second hydraulic cylinders 13 are respectively rotatably connected to both sides of the second support frame 12; the telescopic movement of the output ends of the second hydraulic cylinders 13 can drive the second support frame 12 to perform corresponding movements, thereby realizing the adjustment of the angle of the second support frame 12.

[0025] The support assembly includes four third hydraulic cylinders 24, which are respectively fixedly connected to the four corners of the tripod 11. Universal wheels 25 are installed at the output ends of the third hydraulic cylinders 24. A plurality of step plates 23 are fixedly connected to the inclined frame of the tripod 11; the support height of the universal wheels 25 can be adjusted correspondingly through the provided third hydraulic cylinders 24, so as to be applicable to hulls of different specifications.

[0026] The side ladder assembly includes a side step ladder 15 which is rotatably connected to both sides of the boarding platform 3. Guardrails 39 are also provided on both sides of the side step ladder 15. One end of the side step ladder 15 close to the boarding platform 3 is fixedly connected to a bottom rod 27. Connection seats 29 are fixedly connected to the positions of the boarding platform 3 close to the side step ladder 15. A fourth hydraulic cylinder 28 is rotatably connected to the connection seat 29, and the output end of the fourth hydraulic cylinder 28 is rotatably connected to the bottom rod 27. In use, the provided side step ladder 15 can be used for personnel to board the boarding platform 3. At the same time, the provided fourth hydraulic cylinder 28 can drive the side step ladder 15 to rotate along the transfer point during use, and then fold the side step ladder 15 correspondingly when the installation chassis 1 moves.

[0027] During use, the installation chassis 1 is moved to the required position by the crawler travel mechanism 16. Then, the fourth hydraulic cylinder 28 is used to drive the side step ladder 15 to lower the side step ladder 15 to facilitate the up and down of personnel. At the same time, the first hydraulic cylinder 8 is used to adjust the first support frame 14 to an appropriate angle, and the second hydraulic cylinder 13 is used to correspondingly adjust the second support frame 12, and the tripod 11 is placed on the hull, which can facilitate personnel to board or disembark. When the angle of the first support frame 14 is adjusted, the change in the angle of the first support frame 14 will drive the transfer shaft 22 to rotate. The transfer shaft 22 drives the second gear 21, the second gear 21 drives the first gear 20, the first gear 20 drives the first transmission shaft 17, the first transmission shaft 17 drives the first sprocket 18, the first sprocket 18 drives the chain 30, the chain 30 drives the second sprocket 34, and the second sprocket 34 drives the second transmission shaft 38 to rotate. The rotation of the second transmission shaft 38 drives the third gear 37 to rotate, and the rotation of the third gear 37 drives the rack 2, thereby driving the sliding plate 31 to perform a corresponding displacement. The movement of the sliding plate 31 drives the counterweight 4 to move, thereby realizing the self-balancing of the installation chassis 1 and preventing the problem of tipping over.

[0028] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Although this specification is described according to the embodiments, not each embodiment only contains one technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mobile boarding ladder for marine hydrometeorological shore-based use, comprising a mounting chassis (1), characterized in that: The upper end face of the installation chassis (1) is fixedly connected with a boarding platform (3). A crawler traveling mechanism (16) for movement is installed at the lower end of the installation chassis (1). A support column (5) is installed in the middle of the upper end face of the boarding platform (3). The upper end of the support column (5) is fixedly connected with a top mounting block (6). An offshore marine hydrometeorological detector (7) is installed on the top mounting block (6). Rotating supports (19) are fixedly connected to both ends of one side of the boarding platform (3). A transfer shaft (22) is rotatably connected to the upper end of each rotating support (19). A first support frame (14) is fixedly connected between the opposite ends of the transfer shaft (22). A first ladder plate (9) is arranged in the first support frame (14). A driving assembly for driving the first support frame (14) to rotate along the rotating support (19) is arranged on the top mounting block (6). An anti-overturning balance assembly is arranged in the installation chassis (1). The end of the first support frame (14) away from the boarding platform (3) is rotatably connected with a second support frame (12). A second ladder plate (10) is arranged in the second support frame (12). An adjusting assembly for adjusting the angle of the second support frame (12) is arranged on the first support frame (14). A tripod (11) is arranged at the end of the second support frame (12) away from the first support frame (14). A support assembly is arranged at the lower end of the tripod (11). Side ladder assemblies for facilitating boarding the boarding platform (3) are arranged on both sides of the boarding platform (3).

2. The mobile boarding ladder for marine hydrometeorological shore-based use according to claim 1, characterized in that, The driving assembly includes a transfer seat (26). The transfer seats (26) are respectively fixedly connected to both ends of one side of the top mounting block (6). A first hydraulic cylinder (8) is rotatably connected in each transfer seat (26). The output ends of the two first hydraulic cylinders (8) are respectively rotatably connected to both sides of the first support frame (14).

3. The mobile boarding ladder for marine hydrometeorological shore-based use according to claim 1, characterized in that, The balance assembly includes a sliding plate (31). The sliding plate (31) is arranged inside the installation chassis (1). A counterweight (4) is fixedly connected to the end of the sliding plate (31) away from the first support frame (14). Second guide wheels (33) are installed on four surfaces of the end of the sliding plate (31) away from the counterweight (4). First guide wheels (32) for limiting the sliding plate (31) are arranged on four surfaces of the end of the installation chassis (1) close to the counterweight (4). A follow-up assembly for matching the angle with the first support frame (14) is arranged at the end of the installation chassis (1) away from the counterweight (4).

4. The mobile boarding ladder for ocean hydro-meteorological shore-based use according to claim 3, characterized in that, The follow-up component includes a first transmission shaft (17). The first transmission shaft (17) is rotatably connected to the rotating support (19) at a position below the adapter shaft (22). Both ends of the first transmission shaft (17) are fixedly connected with first gears (20). One end of the adapter shaft (22) is respectively installed with second gears (21) meshing with the first gears (20). Both ends of the first transmission shaft (17) are also installed with first sprockets (18). A second transmission shaft (38) is also rotatably connected inside the installation chassis (1). Both ends of the second transmission shaft (38) are installed with second sprockets (34). Chains (30) are installed between the second sprockets (34) and the first sprockets (18). One end of the sliding plate (31) away from the counterweight (4) is fixedly connected with a U-shaped frame (35). Rack bars (2) are provided at the lower ends of both side bars of the U-shaped frame (35). A bottom support plate (36) is also fixedly connected to the middle of the lower end of the sliding plate (31). An end sealing plate (40) is fixedly connected between the bottom support plate (36) and one end of the U-shaped frame (35) away from the sliding plate (31). Both ends of the second transmission shaft (38) are also fixedly connected with third gears (37). The third gears (37) are respectively meshed with the rack bars (2).

5. The mobile boarding ladder for ocean hydrometeorological shore-based use according to claim 1, wherein, The adjustment component includes two second hydraulic cylinders (13). The two second hydraulic cylinders (13) are respectively rotatably connected to both sides of one end of the first support frame (14) away from the boarding platform (3). The two second hydraulic cylinders (13) are respectively rotatably connected to both sides of the second support frame (12).

6. The mobile boarding ladder for marine hydrometeorological shore-based use according to claim 1, characterized in that, The support component includes four third hydraulic cylinders (24). The four third hydraulic cylinders (24) are respectively fixedly connected to the four corners of the triangular frame (11). Universal wheels (25) are installed at the output ends of the third hydraulic cylinders (24). A plurality of step plates (23) are fixedly connected to the inclined frames of the triangular frame (11).

7. The mobile boarding ladder for marine hydro-meteorological shore-based use according to claim 1, characterized in that, The side ladder component includes side step ladders (15). The side step ladders (15) are respectively rotatably connected to both sides of the boarding platform (3). One end of the side step ladder (15) close to the boarding platform (3) is fixedly connected with a bottom rod (27). Connecting seats (29) are respectively fixedly connected to the positions of the boarding platform (3) close to the side step ladders (15). A fourth hydraulic cylinder (28) is rotatably connected to the connecting seat (29). The output end of the fourth hydraulic cylinder (28) is rotatably connected to the bottom rod (27).

8. The mobile boarding ladder for ocean hydro-meteorological shore-based use according to claim 7, characterized in that, Guardrails (39) are provided on both sides of the triangular frame (11), the second support frame (12), the first support frame (14) and the side step ladders (15), as well as at the edge position of the upper end surface of the boarding platform (3).

9. The mobile boarding ladder for ocean hydrometeorological shore-based use according to claim 4, wherein The pitch diameter of the second gear (21) is larger than the pitch diameter of the first gear (20). The diameter of the first sprocket (18) is larger than the diameter of the second sprocket (34).

10. The mobile boarding ladder for ocean hydrometeorological shore-based use according to claim 1, characterized in that, A hydraulic system for providing hydraulic energy is also provided on the boarding platform (3).

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