Adjustable inclined ladder for ship

Abstract

The invention discloses an adjustable inclined ladder for a ship, and relates to the technical field of ship inclined ladders, the adjustable inclined ladder comprises a fixed base, the fixed base is L-shaped, an inclined ladder displacement mechanism is arranged on the top of the left side of the fixed base, an inclined ladder body is arranged on the right side of the inclined ladder displacement mechanism, and the inclined ladder displacement mechanism comprises a displacement frame; according to the adjustable inclined ladder for the ship, a servo motor drives a pushing block to move through a lead screw, the pushing block drives a pushing rod to rotate by 90 degrees, the pushing rod drives a pushing frame to move through the displacement frame, and the pushing frame drives a contact block to move on the surface of a guide rail; meanwhile, the pushing frame drives the inclined ladder body to move to the front of the auxiliary frame, at the moment, the butt joint frame makes contact with the side wall of the auxiliary frame, the induction block A makes contact with the induction block B, the electric telescopic rod A drives the moving rod to move, the moving rod drives the locking rod to be inserted into the auxiliary frame, and at the moment, the inclined ladder body is limited.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship inclined ladder, in particular to a ship adjustable inclined ladder. BACKGROUND

[0002] In the field of ship building and use, the boarding ladder is an important equipment for facilitating personnel to board the ship deck from the wharf or water surface, usually installed on the ship side or deck area, the main function of the boarding ladder is to provide a safe and stable climbing channel for the crew, while supporting equipment carrying or emergency evacuation needs, with the diversification of ship design and use scenarios, the boarding ladder needs to be adjustable to adapt to different water levels, ship types and wharf conditions, while requiring easy installation, disassembly and maintenance to meet the frequent docking and undocking operation requirements, the existing boarding ladder mostly adopts fixed or partially adjustable design, but its functionality and environmental adaptability still has certain limitations.

[0003] The existing ship inclined ladder length adjusting device realizes the expansion and contraction of the ladder through the adjusting screw, however, this design has the defect of complex operation, manual rotation of the adjusting screw requires large physical strength, especially in frequent adjustment or emergency situations, the operation efficiency is low, it is difficult to meet the demand of rapid adjustment, and the ship inclined ladder cannot be stably fixed on the side of the ship after adjustment, the ladder after expansion and contraction lacks guardrails, resulting in extremely low safety. Therefore, we propose a ship adjustable inclined ladder. SUMMARY

[0004] The purpose of the present application is to provide a ship adjustable inclined ladder to solve the problems raised in the background.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A ship adjustable inclined ladder, comprising a fixed base, the fixed base is arranged in an "L" shape, the left side top of the fixed base is provided with an inclined ladder displacement mechanism, the right side of the inclined ladder displacement mechanism is provided with an inclined ladder body, the inclined ladder displacement mechanism comprises a displacement frame, the left side of the fixed base is connected with the bottom of the displacement frame through a positioning frame to form a rotary connection, the displacement frame is arranged in an "L" shape, the right end top of the displacement frame is fixedly connected with a limiting rail, a pushing frame is slidably connected in the limiting rail, the bottom end of the pushing frame is fixedly connected with a contact block outside the limiting rail, a guide rail is fixedly connected to the right side wall of the fixed base near the contact block, a guide rod is fixedly connected to the left side wall of the limiting rail inside the contact block, a fixed spring is sleeved on the outer surface of the guide rod above the contact block, a pushing rod is fixedly connected to the left end of the bottom of the displacement frame, a moving rail is fixedly connected to the left side wall of the fixed base, a lead screw is rotatably connected in the moving rail, the rear end of the lead screw is fixedly connected with the output end of a servo motor, a pushing block is rotatably connected to the outer surface of the lead screw inside the moving rail, the top end of the pushing rod is slidably connected with the pushing block, the inclined ladder body comprises a bearing frame, the left end top of the bearing frame is rotatably connected with the top of the pushing frame, support plates are fixedly connected to the front and rear sides of the top wall of the bearing frame, a fixed step is fixedly connected to the top end inside the support plate, a plurality of moving steps are arranged below the fixed step inside the support plate, a butt joint frame is fixedly connected to the rear end top of the bearing frame, a moving rod is slidably connected in the butt joint frame, a locking rod is fixedly connected to the side wall of the moving rod inside the top end of the butt joint frame, an electric telescopic rod A is fixedly connected between the side wall of the butt joint frame and the bottom wall of the moving rod, and a sensing block A is fixedly connected to the position of the electric telescopic rod A inside the butt joint frame.

[0006] Preferably, the bottom front end of the fixed base is fixedly connected with an auxiliary frame through bolts, the auxiliary frame is arranged in an "L" shape, a damping block is fixedly connected to the rear side of the bottom of the auxiliary frame, through holes engaged with the locking rods are formed in the left and right ends of the bottom of the auxiliary frame, a sensing block B engaged with the sensing block A is fixedly connected to the left side wall of the bottom of the auxiliary frame, the fixed base is connected with the ship body through bolts, a support cylinder connected with the displacement frame is arranged at the bottom of the positioning frame, a limiting frame is fixedly connected to the front side wall of the bottom of the displacement frame, and the limiting frame is arranged in an "L" shape.

[0007] Preferably, a sliding groove slidably connected with the contact block is formed in the left side wall of the limiting rail, a sliding rod slidably connected with the side wall of the guide rail is arranged at the left end of the contact block, and the guide rail is arranged in a circular arc shape.

[0008] Preferably, the top end of the guide rod is connected with the left side wall of the limiting rail through a stop block, the guide rod penetrates through the contact block, a motor frame is arranged outside the servo motor and connected with the side wall of the fixed base, a groove slidably connected with the inner wall of the moving rail is formed in the side wall of the pushing block, and a sliding groove slidably connected with the pushing rod is formed in the right end of the pushing block.

[0009] Preferably, the carrier frame bottom is arranged in a "C" shape, the carrier frame top is connected with the pushing frame through a fixing ring, and the carrier frame top end is fixedly connected with a guardrail.

[0010] Preferably, the moving steps are connected through hinged plates, the hinged plates are rotationally connected at the center positions of the side walls of the moving steps, and the upper and lower ends of the hinged plates are rotationally connected with the right side of the upper moving step and the left side of the lower moving step, respectively.

[0011] Preferably, the fixed steps are rotationally connected with fixed plates at the center positions of the front and rear side walls, the right end of the fixed plate is rotationally connected with the center position of the fixed step, the left end of the fixed plate is rotationally connected with the left side of the lower moving step, a top plate is rotationally connected with the side wall of the fixed plate, and the top plate top is rotationally connected with a power frame.

[0012] Preferably, the power frame center position is rotationally connected with the left end of the support plate, two pull rings are slidingly connected with the outer surface of the power frame bottom, an electric telescopic rod B is rotationally connected with the center position of the left side wall of the pull ring, an extension frame is fixedly connected with the outer surface of the electric telescopic rod B, and the electric telescopic rod B is fixedly connected in the extension frame.

[0013] Preferably, the fixed steps and the moving steps are provided with anti-skid strips on the inner bottom walls, the bottom wall of the moving step at the bottom layer is provided with a buffer pad, a clamping block is rotationally connected with the front end side wall of the moving step, a positioning block is fixedly connected with the inner wall of the moving step below the clamping block, clamping rods are arranged on the left and right ends of the clamping block, slots are formed in the clamping rods, a moving groove is formed in the side wall of the moving step in sliding connection with the clamping rods, and an insertion block is arranged in the moving groove in meshing connection with the slots.

[0014] Preferably, support bars A are fixedly connected with the right ends of the clamping blocks, storage rods are slidingly connected with the inner left and right sides of the rear end of the support bar A, storage grooves are formed in the support bar A at the positions of the storage rods, support bars B are fixedly connected with the rear ends of the storage rods, clamping blocks A are fixedly connected with the top of the front end of the storage rods, adjusting rails are fixedly connected with the inner left and right sides of the support bar A, clamping blocks B are slidingly connected with the inner side of the adjusting rails close to the storage rods, metal pull ropes are fixedly connected with the clamping blocks B, and return springs are sleeved with the outer surfaces of the metal pull ropes between the clamping blocks B and the adjusting rails.

[0015] Compared with the prior art, the present application has the following beneficial effects: 1. The servo motor of the present application moves the push block through the lead screw, rotates the push rod 90 degrees, moves the push frame through the displacement frame, moves the push frame, and moves the contact block on the surface of the guide rail, while the push frame moves the inclined ladder body to the front of the auxiliary frame, at which time the butt joint frame contacts the side wall of the auxiliary frame, the sensing block A contacts the sensing block B, the electric telescopic rod A moves the moving rod, the moving rod inserts the locking rod into the auxiliary frame, at which time the inclined ladder body is limited, solves the problem that the existing ship inclined ladder adjusting device realizes the expansion and contraction of the ladder by manually rotating the screw, and causes difficulty in meeting the rapid adjustment in emergency, and has the advantages of rapid adjustment.

[0016] 2. The present application moves the support bar B by pulling it out, moves the support bar A through the storage rod, until the support bar A rotates the clamping block 90 degrees, at which time the support bar B is pressed down, the plug block is inserted into the clamping rod to limit the angle of the support bar B, solves the problem that the existing ship inclined ladder lacks guardrails, resulting in extremely low safety, and has the advantage of storable guardrails. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The present application is a whole structure schematic diagram; Figure 2 The present application is a structure support plate schematic diagram; Figure 3 The present application is a structure push rod schematic diagram; Figure 4 The present application is a structure displacement frame schematic diagram; Figure 5 The present application is a structure guide rail schematic diagram; Figure 6 The present application is a structure contact block schematic diagram; Figure 7 The present application is a structure locking rod schematic diagram; Figure 8 The present application is a structure power frame schematic diagram; Figure 9 The present application is a structure support bar A schematic diagram; Figure 10 The present application is a structure clamping block B schematic diagram.

[0018] In the figure: 1, fixed base; 2, displacement frame; 3, positioning frame; 4, limiting rail; 5, push frame; 6, contact block; 7, guide rail; 8, guide rod; 9, fixed spring; 10, push rod; 11, moving rail; 12, lead screw; 13, servo motor; 14, push block; 15, bearing frame; 16, support plate; 17, fixed step; 18, moving step; 19, butt joint frame; 20, moving rod; 21, locking rod; 22, electric telescopic rod A; 23, induction block A; 24, auxiliary frame; 25, shock block; 26, induction block B; 27, limiting frame; 28, guardrail; 29, hinged plate; 30, fixed plate; 31, top plate; 32, power frame; 33, pull ring; 34, electric telescopic rod B; 35, clamping block; 36, positioning block; 37, clamping rod; 38, plug block; 39, support rail A; 40, storage rod; 41, support rail B; 42, clamping block A; 43, adjusting rail; 44, clamping block B; 45, metal pull rope; 46, return spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0020] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0021] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection claimed in the present application.

[0023] Please refer to Figures 1-10The application provides a technical scheme: a ship adjustable inclined ladder, which comprises a fixed base 1, the fixed base 1 is arranged in an L shape, a inclined ladder displacement mechanism is arranged at the top of the left side of the fixed base 1, and a inclined ladder body is arranged at the right side of the inclined ladder displacement mechanism, the inclined ladder displacement mechanism comprises a displacement frame 2, the left side of the fixed base 1 is rotationally connected with the bottom of the displacement frame 2 by arranging a positioning frame 3, the displacement frame 2 is arranged in an L shape, a limiting rail 4 is fixedly connected to the top of the right end of the displacement frame 2, a pushing frame 5 is slidably connected in the limiting rail 4, the limiting rail 4 guides and limits the pushing frame 5, a contact block 6 is fixedly connected to the bottom of the pushing frame 5 and located outside the limiting rail 4, a guide rail 7 is fixedly connected to the right side wall of the fixed base 1 and located close to the contact block 6, a sliding groove is formed in the left side wall of the limiting rail 4 and slidably connected with the contact block 6, and a sliding rod is arranged at the left end of the contact block 6 and slidably connected with the side wall of the guide rail 7.

[0024] The guide rail 7 is arranged in a circular arc shape, the arrangement of the guide rail 7 prevents the inclined ladder body from being interfered with when moving to the ship body, so that the inclined ladder body moves more smoothly, a guide rod 8 is fixedly connected to the left side wall of the limiting rail 4 and located inside the contact block 6, a fixed spring 9 is sleeved with the outer surface of the guide rod 8 and located above the contact block 6, a pushing rod 10 is fixedly connected to the bottom left end of the displacement frame 2, a moving rail 11 is fixedly connected to the left side wall of the fixed base 1, a lead screw 12 is rotationally connected in the moving rail 11, the rear end of the lead screw 12 is fixedly connected with the output end of a servo motor 13, a pushing block 14 is rotationally connected to the outer surface of the lead screw 12 and located inside the moving rail 11, the top end of the pushing rod 10 is slidably connected with the inside of the pushing block 14, the top end of the guide rod 8 is connected with the left side wall of the limiting rail 4 by arranging a stop block, the guide rod 8 penetrates the contact block 6, the servo motor 13 is connected with the side wall of the fixed base 1 by arranging a motor frame, a groove is formed in the side wall of the pushing block 14 and slidably connected with the inner wall of the moving rail 11, and a sliding groove is formed in the right end of the pushing block 14 and slidably connected with the pushing rod 10.

[0025] The inclined ladder body comprises a bearing frame 15, the top left end of the bearing frame 15 is rotationally connected with the top of the pushing frame 5, the bottom of the bearing frame 15 is arranged in a C shape, the arrangement of the bearing frame 15 facilitates the movement of the moving steps 18 out of the supporting plates 16, the top of the bearing frame 15 is connected with the pushing frame 5 by arranging a fixed ring, a protective fence 28 is fixedly connected to the top end of the bearing frame 15, the supporting plates 16 are fixedly connected to the front and rear sides of the top wall of the bearing frame 15, a fixed step 17 is fixedly connected to the inside top of the supporting plate 16, a plurality of moving steps 18 are arranged in the inside of the supporting plate 16 and below the fixed step 17, a docking frame 19 is fixedly connected to the top rear end of the bearing frame 15, a moving rod 20 is slidably connected in the docking frame 19, a locking rod 21 is fixedly connected to the side wall of the moving rod 20 and located inside the top end of the docking frame 19, and the arrangement of the locking rod 21 facilitates the fixation between the inclined ladder body and an auxiliary frame 24.

[0026] The electric telescopic rod A22 is fixedly connected between the side wall of the docking frame 19 and the bottom wall of the moving rod 20. The inductive block A23 is fixedly connected inside the docking frame 19 at the position of the electric telescopic rod A22. The auxiliary frame 24 is fixedly connected to the front end of the bottom of the fixed base 1 through bolts. The auxiliary frame 24 is arranged in an "L" shape. The shock-absorbing block 25 is fixedly connected to the bottom rear side wall of the auxiliary frame 24. The arrangement of the shock-absorbing block 25 prevents the auxiliary frame 24 from directly contacting the ship body. The auxiliary frame 24 is provided with through holes at the left and right ends of the bottom for engaging with the locking rod 21. The auxiliary frame 24 is fixedly connected with the inductive block B26 on the left side wall of the bottom for engaging with the inductive block A23. The fixed base 1 is connected with the ship body through bolts. The support cylinder is arranged at the bottom of the positioning frame 3 and connected with the displacement frame 2. The servo motor 13 drives the push block 14 to move through the lead screw 12. The push block 14 drives the push rod 10 to rotate by 90 degrees. The push rod 10 drives the push frame 5 to move through the displacement frame 2. The push frame 5 drives the contact block 6 to move on the surface of the guide rail 7. At the same time, the push frame 5 drives the ladder body to move to the front of the auxiliary frame 24. At this time, the docking frame 19 contacts with the side wall of the auxiliary frame 24, the inductive block A23 contacts with the inductive block B26, the electric telescopic rod A22 drives the moving rod 20 to move, and the moving rod 20 drives the locking rod 21 to insert into the auxiliary frame 24. At this time, the ladder body is limited.

[0027] The limiting frame 27 is fixedly connected to the front side wall of the bottom of the displacement frame 2. The limiting frame 27 is arranged in an "L" shape. The movable steps 18 are connected through the hinged plates 29. The hinged plates 29 are rotationally connected to the center positions of the side walls of the movable steps 18. The upper and lower ends of the hinged plates 29 are respectively rotationally connected with the right side of the upper movable step 18 and the left side of the lower movable step 18. The arrangement of the hinged plates 29 facilitates the equal-distance translation of the movable steps 18 and the folding and unfolding of the ladder. The fixed plates 30 are rotationally connected to the center positions of the front and rear side walls of the fixed step 17. The right end of the fixed plate 30 is rotationally connected with the center position of the fixed step 17. The left end of the fixed plate 30 is rotationally connected with the left side of the lower movable step 18. The fixed plate 30 is rotationally connected with the top plate 31. The top plate 31 is rotationally connected with the power frame 32 at the top. The center position of the power frame 32 is rotationally connected with the left end of the support plate 16. The power frame 32 is slidingly connected with two pull rings 33 on the outer surface of the bottom. The electric telescopic rod B34 is rotationally connected with the left side wall of the pull ring 33 at the center position. The extension frame is fixedly connected to the outer surface of the electric telescopic rod B34.

[0028] The inner bottom wall of the fixed step 17 and the mobile step 18 is provided with an anti-skid strip, the bottom wall of the mobile step 18 at the bottom layer is provided with a buffer pad, the electric telescopic rod B34 drives the pulling ring 33 to move, the pulling ring 33 drives the power frame 32 to rotate, the power frame 32 drives the top plate 31 to move, the top plate 31 drives the fixed plate 30 to rotate, the fixed plate 30 drives the mobile step 18 to realize displacement, the mobile step 18 realizes equidistance translation under the action of the hinged plate 29, and the mobile step 18 at the bottom layer is in contact with the wharf ground until the end.

[0029] The right end of the clamping block 35 is fixedly connected with a supporting rod A 39, the inner left and right sides of the supporting rod A 39 are slidably connected with a receiving rod 40, the supporting rod A 39 is provided with a receiving groove at the position of the receiving rod 40, the left end of the clamping block 35 is fixedly connected with a supporting rod B 41, the supporting rod B 41 is pulled out, the supporting rod B 41 drives the supporting rod A 39 to move through the receiving rod 40 until the supporting rod A 39 drives the clamping block 35 to rotate 90 degrees, at this time, the supporting rod B 41 is pressed downward, the plug block 38 is inserted into the clamping rod 37 to limit the angle of the supporting rod B 41, the front end of the receiving rod 40 is fixedly connected with a clamping block A 42, the inner left and right sides of the supporting rod A 39 are fixedly connected with an adjusting rail 43, the inner side of the adjusting rail 43 close to the receiving rod 40 is slidably connected with a clamping block B 44, when the supporting rod B 41 drives the receiving rod 40 to be completely pulled out from the supporting rod A 39, the clamping block B 44 limits the clamping block A 42, the clamping block B 44 is fixedly connected with a metal pull rope 45, the outer surface of the metal pull rope 45 is sleeved with a return spring 46 between the clamping block B 44 and the adjusting rail 43.

[0030] Working principle: when the ship uses the adjustable inclined ladder, the servo motor 13 drives the push block 14 to move through the screw rod 12, the push block 14 drives the push rod 10 to rotate 90 degrees, the push rod 10 drives the push frame 5 to move through the displacement frame 2, the push frame 5 drives the contact block 6 to move on the surface of the guide rail 7, and at the same time, the push frame 5 drives the inclined ladder body to move to the front of the auxiliary frame 24, at this time, the butt joint frame 19 contacts with the side wall of the auxiliary frame 24, the sensing block A23 contacts with the sensing block B26, the electric telescopic rod A22 drives the moving rod 20 to move, the moving rod 20 drives the locking rod 21 to insert into the auxiliary frame 24, at this time, the inclined ladder body is limited, the electric telescopic rod B34 drives the pull ring 33 to move, the pull ring 33 drives the power frame 32 to rotate, the power frame 32 drives the top plate 31 to move, the top plate 31 drives the fixed plate 30 to rotate, the fixed plate 30 drives the moving steps 18 to realize displacement, the moving steps 18 realize equidistance translation under the action of the hinged plate 29, until the bottom moving step 18 contacts with the wharf ground, at this time, the support bar B41 is pulled out, the support bar B41 drives the support bar A39 to move through the storage rod 40, until the support bar A39 drives the clamping block 35 to rotate 90 degrees, at this time, the support bar B41 is pressed down, the plug block 38 is inserted into the clamping rod 37 to realize the angle limiting of the support bar B41.

[0031] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. While embodiments of the application have been illustrated and described, it will be clear to those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An adjustable gangway for a marine vessel comprising a fixed base (1) characterised in that: The fixed base (1) is provided in an "L" shape, and a slope displacement mechanism is arranged on the top of the left side of the fixed base (1); the slope displacement mechanism is provided with a slope body on the right side of the slope displacement mechanism; The slope displacement mechanism comprises a displacement frame (2), the left side of the fixed base (1) is rotationally connected with the bottom of the displacement frame (2) through a positioning frame (3), the displacement frame (2) is provided in an "L" shape, the right end of the displacement frame (2) is fixedly connected with a limiting rail (4) on the top, a pushing frame (5) is slidably connected in the limiting rail (4), the bottom end of the pushing frame (5) is fixedly connected with a contact block (6) outside the limiting rail (4), a guide rail (7) is fixedly connected to the right side wall of the fixed base (1) near the contact block (6), a guide rod (8) is fixedly connected to the left side wall of the limiting rail (4) inside the contact block (6), a fixed spring (9) is sleeved on the outer surface of the guide rod (8) above the contact block (6), a pushing rod (10) is fixedly connected to the bottom left end of the displacement frame (2), a moving rail (11) is fixedly connected to the left side wall of the fixed base (1), a lead screw (12) is rotationally connected in the moving rail (11), the rear end of the lead screw (12) is fixedly connected with the output end of a servo motor (13), a pushing block (14) is rotationally connected to the outer surface of the lead screw (12) inside the moving rail (11), and the top end of the pushing rod (10) is slidably connected with the pushing block (14) inside; The slope body comprises a bearing frame (15), the top of the left end of the bearing frame (15) is rotationally connected with the top of the pushing frame (5), support plates (16) are fixedly connected to the front and rear walls of the bearing frame (15), fixed steps (17) are fixedly connected to the top end of the support plates (16) inside, a plurality of moving steps (18) are arranged below the fixed steps (17) inside the support plates (16), a butt joint frame (19) is fixedly connected to the top of the rear end of the bearing frame (15), a moving rod (20) is slidably connected in the butt joint frame (19), a locking rod (21) is fixedly connected to the side wall of the moving rod (20) inside the top end of the butt joint frame (19), an electric telescopic rod A (22) is fixedly connected between the side wall of the butt joint frame (19) and the bottom wall of the moving rod (20), and a sensing block A (23) is fixedly connected to the butt joint frame (19) at the position of the electric telescopic rod A (22).

2. A ship's adjustable gangway according to claim 1, characterised in that: The bottom front end of the fixed base (1) is fixedly connected with an auxiliary frame (24) through bolts, the auxiliary frame (24) is provided in an "L" shape, a damping block (25) is fixedly connected to the bottom rear wall of the auxiliary frame (24), through holes meshing with the locking rod (21) are formed in the bottom left and right ends of the auxiliary frame (24), a sensing block B (26) meshing with the sensing block A (23) is fixedly connected to the bottom left wall of the auxiliary frame (24), the fixed base (1) is connected with the ship body through bolts, the bottom of the positioning frame (3) is provided with a support cylinder connected with the displacement frame (2), a limiting frame (27) is fixedly connected to the bottom front wall of the displacement frame (2), and the limiting frame (27) is provided in an "L" shape.

3. A ship's adjustable gangway according to claim 1, characterised in that: The left side wall of the limiting rail (4) is provided with a sliding groove in sliding connection with the contact block (6), and the left end of the contact block (6) is provided with a sliding rod in sliding connection with the side wall of the guide rail (7), and the guide rail (7) is in the shape of a circular arc.

4. A ship's adjustable gangway according to claim 1, characterised in that: The top end of the guide rod (8) is connected with the left side wall of the limiting rail (4) by setting a stop block, the guide rod (8) penetrates the contact block (6), the outside of the servo motor (13) is connected with the side wall of the fixed base (1) by setting a motor rack, the side wall of the push block (14) is provided with a groove in sliding connection with the inner wall of the moving rail (11), and the right end of the push block (14) is provided with a sliding groove in sliding connection with the push rod (10).

5. A ship's adjustable gangway according to claim 1, characterised in that: The bottom of the bearing frame (15) is provided in the shape of "C", the top of the bearing frame (15) is connected with the push frame (5) by setting a fixing ring, and the top end of the bearing frame (15) is fixedly connected with a protective fence (28).

6. A ship's adjustable gangway according to claim 1, characterised in that: The moving steps (18) are connected through a hinged plate (29), the hinged plate (29) is rotatably connected to the center of the side wall of the moving step (18), and the upper and lower ends of the hinged plate (29) are rotatably connected to the right side of the upper moving step (18) and the left side of the lower moving step (18) respectively.

7. A ship's adjustable gangway according to claim 1, characterised in that: The center positions of the front and rear side walls of the fixed step (17) are rotatably connected with a fixed plate (30), the right end of the fixed plate (30) is rotatably connected with the center position of the fixed step (17), the left end of the fixed plate (30) is rotatably connected with the left side of the lower moving step (18), and the side wall of the fixed plate (30) is rotatably connected with a top plate (31), and the top of the top plate (31) is rotatably connected with a power frame (32).

8. A ship's adjustable gangway according to claim 7, characterised in that: The center position of the power frame (32) is rotatably connected with the left end of the support plate (16), and the outer surface of the bottom of the power frame (32) is slidably connected with two pull rings (33), the center position of the left side wall of the pull ring (33) is rotatably connected with an electric telescopic rod B (34), the side wall of the protective fence (28) is fixedly connected with an extension frame outside the outer surface of the electric telescopic rod B (34), and the electric telescopic rod B (34) is fixedly connected in the extension frame.

9. A ship's adjustable gangway according to claim 1, characterised in that: The inner bottom walls of the fixed step (17) and the moving step (18) are provided with anti-skid strips, the bottom wall of the moving step (18) at the bottom layer is provided with a buffer pad, the inner side wall of the front end of the moving step (18) is rotatably connected with a clamping block (35), the inner wall of the moving step (18) is fixedly connected with a positioning block (36) below the clamping block (35), the left and right ends of the clamping block (35) are provided with clamping rods (37), the clamping rods (37) are provided with insertion grooves, the side wall of the moving step (18) is provided with a moving groove in sliding connection with the clamping rod (37), and the moving groove is provided with an insertion block (38) engaged with the insertion groove.

10. A ship's adjustable gangway according to claim 9, characterised in that: The right end of the clamping block (35) is fixedly connected with a support rail A (39), the left and right sides of the rear end of the support rail A (39) are slidably connected with containing rods (40), a containing groove is formed in the support rail A at the position of the containing rods (40), the rear ends of the containing rods (40) are fixedly connected with a support rail B (41), the front ends of the containing rods (40) are fixedly connected with clamping blocks A (42), the left and right sides of the inside of the support rail A (39) are fixedly connected with adjusting rails (43), the side close to the containing rods (40) of the inside of the adjusting rail (43) is slidably connected with clamping blocks B (44), the clamping blocks B (44) are fixedly connected with metal pull ropes (45), and the outer surfaces of the metal pull ropes (45) are sleeved with return springs (46) between the clamping blocks B (44) and the adjusting rails (43).

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