CN116816067A - Ship section ascending and descending ladder and use method thereof - Google Patents

Abstract

The invention relates to the technical field of ship manufacturing, and particularly discloses a ship segmented up-down ladder and a use method thereof. The inner side rod and the outer side rod of the cat ladder are rotationally connected with the horizontal cross rod of the scaffold, the cat ladder can be put down or folded through rotation in the transportation or transportation process, and meanwhile, the hook component is arranged, so that the cat ladder can be hung on the mesh plate, and is not required to be tied and fixed by a wire in the transportation process, the top end of the cat ladder is rotationally connected with the horizontal cross rod, the setting direction of the cat ladder is consistent with the direction of the mesh plate, and the space occupied by ship segmentation is reduced.

Description

Ship section ascending and descending ladder and use method thereof

Technical Field

The invention relates to the technical field of ship manufacturing, in particular to a ship section ascending and descending ladder and a using method thereof.

Background

The large and medium-sized ships are formed by splicing huge ship segments, and in the later stage of ship segment construction, namely in the stage of separating from the segments to manufacture the jig frame, the ship segments are transported for multiple times by the ship segment transport vehicle according to the construction procedure requirements, and construction operation in the corresponding stage is carried out after the ship segments are transported in place. Therefore, the scaffold for construction on the ship section is fixed with the ship section, and is transported integrally along with the ship section, so that the number of times of erecting and dismantling is reduced, and the construction efficiency is improved. After the ship section is transported to the appointed position, the scaffold of the ship section is required to be provided with a fixed ship section ascending and descending ladder so as to facilitate the constructor to safely ascend and descend the ship section.

In the conventional construction scheme, after the ship segments are transported in place, the inclined ladder is hung vertically against the edge of the scaffold walkway plate in the length direction of the scaffold walkway plate, and is fastened and fixed by iron wires. When the ship section needs to be transported to the position again, the iron wire for fixing the inclined ladder is removed, and then the inclined ladder is lifted stably and placed on the scaffold pavement plate, and is fastened and fixed by the iron wire. When the ship section is transported in place again, the iron wire for fixing the inclined ladder is removed, then the inclined ladder is hung on the edge of the scaffold pavement plate in the direction perpendicular to the length direction of the scaffold pavement plate, and the inclined ladder is fastened and fixed by the iron wire, so that the construction is prepared again. Each time of transportation needs to be dismantled twice and fastened twice, and is in safety consideration, and the iron wire of demolishing can't reuse, and in-process complex operation just causes the extravagant condition seriously.

To this, prior art provides a ramp that can load and unload fast, is connected with the scaffold frame through setting up clamping device at the ramp top, can install fast after transporting in place, can dismantle fast when needs are transported, need not tie up and demolish with the iron wire. However, in the transferring process, the inclined ladder still can be fastened only through the iron wire, and the iron wire still needs to be removed after being transported in place, so that the problem is not completely solved. Meanwhile, as the inclined ladder is vertically arranged with the mesh-shaped pavement plate of the scaffold, the occupied space is large, and the high-density placement of the ship sections is not facilitated.

Disclosure of Invention

The invention aims to provide a ship section ascending and descending ladder and a using method thereof, so as to solve the problem that the internal pressure of carbon fibers cannot be obtained in the production process of existing equipment.

The invention provides a ship sectional up-down ladder which is used for providing personnel to go up and down a scaffold, wherein the scaffold comprises a horizontal cross rod and a vertical upright rod, the horizontal cross rod and the vertical upright rod are fixedly connected, a mesh plate is laid above the horizontal cross rod, the mesh plate is vertically arranged with the horizontal cross rod, the mesh plate is used for providing personnel to walk, the ship sectional up-down ladder comprises a cat ladder and a hook component, the cat ladder comprises an inner side rod and an outer side rod which are parallel to each other, a plurality of pedals are arranged between the inner side rod and the outer side rod, the top ends of the inner side rod and the outer side rod are both in rotary connection with the horizontal cross rod, the inner side rod and the outer side rod are respectively arranged on two sides of the vertical upright rod, the hook component is rotatably arranged on the inner side rod, and the cat ladder can be hung on the mesh plate by the hook component.

As the preferable technical scheme of the ladder is stepped up and down to the ship, the top ends of the inner side rod and the outer side rod are fixedly connected with movable sleeves, the movable sleeves are sleeved on the horizontal cross rod, and the inner diameter of each movable sleeve is larger than or equal to the outer diameter of the horizontal cross rod.

As the preferable technical scheme of the ship section ascending and descending ladder, the shape of the movable sleeve comprises a C shape.

As the preferable technical scheme of ladder about the boats and ships segmentation, the distance of interior side lever and mesh board is less than the distance of outside pole and mesh board, and the couple subassembly includes couple sleeve pipe, couple and fixed handle, and couple sleeve pipe cover is established on the interior side lever, and couple and fixed handle all weld on couple sheathed tube lateral wall, and the couple point of couple can pass the mesh of mesh board.

As the preferable technical scheme of the ship section ladder, the weight of the fixed handle is larger than that of the connecting hooks, and when the hook tips penetrate through the meshes, the fixed handle points to the ground.

As the preferable technical scheme of the ship section ladder, the fixed handle is a tubular part, the hook component further comprises a movable handle, the outer diameter of the movable handle is smaller than the inner diameter of the fixed handle, the movable handle is partially inserted into the fixed handle, and the length of the movable handle is larger than that of the fixed handle.

As the preferable technical scheme of the ship section ascending and descending ladder, the connecting hook and the fixed handle are arranged at 180 degrees.

As the preferential technical scheme of ladder about boats and ships segmentation, the cat ladder still includes the guardrail, guardrail and outside pole fixed connection, and the guardrail is used for preventing that personnel from falling from the side of cat ladder.

The invention provides a use method of a ship section ascending and descending ladder, which is applied to the ship section ascending and descending ladder of any scheme, and comprises the following steps:

when the cat ladder needs to be lowered, the hook component is separated from the mesh plate, and the lower end of the cat ladder is placed on the ground;

when the cat ladder is required to be folded, the lower end of the cat ladder is lifted to the mesh plate, so that the hook component is hung on the mesh plate.

As the preferable technical scheme of the use method of the ship section ladder, the hook component comprises a hook sleeve, a connecting hook and a fixed handle, wherein the hook sleeve is sleeved on the inner side rod, and the connecting hook and the fixed handle are welded on the outer side wall of the hook sleeve;

the method for disengaging the hook assembly from the mesh plate comprises the following steps:

lifting the fixed handle to enable the hook component to move upwards;

pulling the fixed handle towards the direction close to the mesh plate to enable the connecting hook to be far away from the mesh plate;

the method for hanging the hook component on the mesh plate comprises the following steps:

pulling the fixed handle towards the direction close to the mesh plate to enable the connecting hook to be far away from the mesh plate;

lifting the fixed handle to enable the connecting hook to be positioned above the mesh plate;

the fixed handle is pulled in the direction away from the mesh plate, so that the connecting hook moves towards the mesh plate, and the fixed handle is lowered to enable the connecting hook to be hooked on the mesh plate.

The beneficial effects of the invention are as follows:

the invention provides a ship sectionalized up-down ladder, which comprises a ladder stand and a hook component, wherein the ladder stand comprises an inner side rod and an outer side rod which are parallel to each other, a plurality of pedals are arranged between the inner side rod and the outer side rod, the top ends of the inner side rod and the outer side rod are respectively and rotatably connected with a horizontal cross rod, the inner side rod and the outer side rod are respectively arranged on two sides of a vertical upright rod, the hook component is rotatably arranged on the inner side rod, and the hook component can hang the ladder stand on a mesh plate. The inner side rod and the outer side rod of the cat ladder are rotationally connected with the horizontal cross rod of the scaffold, the cat ladder can be put down or folded through rotation in the transportation or transportation process, and meanwhile, the hook component is arranged, so that the cat ladder can be hung on the mesh plate, and is not required to be tied and fixed by a wire in the transportation process, the top end of the cat ladder is rotationally connected with the horizontal cross rod, the setting direction of the cat ladder is consistent with the direction of the mesh plate, and the space occupied by ship segmentation is reduced.

Drawings

FIG. 1 is a schematic view of a ship section up-and-down ladder structure in an embodiment of the invention;

FIG. 2 is a schematic diagram of a structure of a ship section after a mesh plate is hidden by a ladder;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is an exploded view of a hanger assembly in accordance with an embodiment of the present invention;

fig. 5 is a schematic structural view of a ladder stand according to an embodiment of the invention.

In the figure:

100. a ladder stand; 200. guard bars; 300. a scaffold; 400. a connecting piece; 500. a ship section skin;

11. an outer lever; 12. an inner side lever; 13. foot pedal; 14. a movable sleeve; 15. a hook assembly; 151. a hook sleeve; 152. a connecting hook; 153. a fixed handle; 154. a movable handle;

31. a horizontal cross bar; 32. a vertical upright rod; 33. a protective cross bar; 34. a railing structure; 35. a fastener; 36. a mesh plate;

41. a U-shaped clamping member; 42. and clamping the bolt.

Detailed Description

The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

For ease of explanation, the position and connection relationship of the shell plates of the ship segments and the scaffold 300 in the related art will be described herein. As shown in fig. 1 to 2, the ship segment skin 500 of fig. 1 and 2 is connected to the scaffold 300 by the connector 400, the connector 400 includes a U-shaped clamping member 41 and a clamping bolt 42, one end of the U-shaped clamping member 41 is fixedly connected to the horizontal rail 31 of the scaffold 300, and the ship segment shell is placed in a groove of the U-shaped clamping member 41 and is locked by the clamping bolt 42. A mesh plate 36 is provided at one end of the horizontal cross bar 31 near the ship segment shell plate 500 for the personnel to walk, and the mesh plate 36 is fixedly connected with the horizontal cross bar 31. Still fixedly connected with vertical pole setting 32 on horizontal pole setting 31, vertical pole setting 32 passes through fastener 35 fixed connection with horizontal pole setting 31, fixedly connected with protection horizontal pole 33 and railing structure 34 on the vertical pole setting 32 to the personnel's operation of being convenient for.

As shown in fig. 1 to 5, the present invention provides a ship sectional up-down ladder for a person to go up and down a scaffold 300, the scaffold 300 includes a horizontal cross bar 31 and a vertical upright bar 32, the horizontal cross bar 31 and the vertical upright bar 32 are fixedly connected, a mesh plate 36 is laid above the horizontal cross bar 31, the mesh plate 36 is vertically disposed with the horizontal cross bar 31, the mesh plate 36 is used for the person to walk, the ship sectional up-down ladder includes a ladder 100 and a hook assembly 15, the ladder 100 includes an inner side bar 12 and an outer side bar 11 which are parallel to each other, a plurality of footrests 13 are disposed between the inner side bar 12 and the outer side bar 11, the top ends of the inner side bar 12 and the outer side bar 11 are rotatably connected with the horizontal cross bar 31, the inner side bar 12 and the outer side bar 11 are disposed at both sides of the vertical upright bar 32, the hook assembly 15 is rotatably disposed on the inner side bar 12, and the hook assembly 15 is capable of hanging the ladder 100 on the mesh plate 36. The inner rod 12 and the outer rod 11 of the ladder stand 100 are rotationally connected with the horizontal cross rod 31 of the scaffold 300, the ladder stand 100 can be put down or folded through rotation in the transportation or transferring process, and meanwhile, the hook assembly 15 is arranged, so that the ladder stand 100 can be hung on the mesh plate 36, iron wires are not needed to be used for fastening and fixing in the transportation process, the top end of the ladder stand 100 is rotationally connected with the horizontal cross rod 31, the setting direction of the ladder stand 100 is consistent with the direction of the mesh plate 36, and the space occupied by ship segmentation is reduced.

Specifically, as shown in fig. 2, the top end of the inner rod 12 and the top end of the outer rod 11 are fixedly connected with movable sleeves 14, and the connection mode is preferably welding. The inside diameter of the movable sleeve 14 is greater than or equal to the outside diameter of the horizontal cross rod 31, the two movable sleeves 14 are respectively arranged on two sides of the vertical upright rod 32, namely, the movable sleeves 14 are respectively arranged on two sides of the connecting point of the horizontal cross rod 31 and the vertical upright rod 32, and the movable sleeves cannot slide on the horizontal cross rod 31 at will due to the fixed connection of the horizontal cross rod 31 and the vertical upright rod 32, so that the accident that the movable sleeve 14 falls off from the end part of the horizontal cross rod 31 to cause the tilting of the ladder 100 due to the circumferential sliding of the movable sleeve 14 on the horizontal cross rod 31 can be avoided. In the present embodiment, the distance from the outer end of the movable sleeve 14 connected to the outer pole 11 to the outer end of the horizontal rail 31 of the scaffold 300 is 1 to 2 times the width of the movable sleeve 14, and the distance from the inner side of the vertical pole 32 of the scaffold 300 to the outer end of the other movable sleeve 14 is 0 to 0.5 times the width of the movable sleeve 14. When the movable sleeve 14 is circular, the two movable sleeves 14 need to be sleeved on the horizontal cross bars 31 before the vertical upright 32 is installed, and then the vertical upright 32 is installed between the two horizontal cross bars 31. When the movable sleeve 14 is C-shaped, the order of installation of the movable sleeve 14 and the vertical upright 32 may not be limited, and if the vertical upright 32 is installed first, the openings of the two C-shaped movable sleeves 14 are clamped on the horizontal cross bar 31 and an external force is applied, and in the elastic deformation section, the openings of the C-shaped movable sleeves 14 become larger under the action of the external force, so as to be sleeved on the horizontal cross bar 31. It will be appreciated that the width of the opening of the C-shaped movable sleeve 14 depends on the material and the diameter of the horizontal cross bar 31, and is not illustrated here.

Alternatively, as shown in fig. 1 and 5, the distance between the inside lever 12 and the mesh plate 36 is smaller than the distance between the outside lever 11 and the mesh plate 36, i.e., the inside lever 12 is a lever on the side close to the mesh plate 36 and the outside lever 11 is a lever on the side away from the mesh plate 36. Since the inside pole 12 is adjacent to the mesh plate 36 side, there is no risk of falling when a person climbs up or down the ladder 100, the side of the inside pole 12 is blocked by the scaffold 300. The guard rail 200 is therefore fixedly connected to the outer rod 11, preferably by welding. The guard rail 200 is used for preventing personnel from falling from the side of the ladder stand 100, i.e. the side of the outer side rod 11, and the height of the guard rail 200 is not less than 1.2m, so as to play an effective protection role, and the structure of the guard rail 200 is not described herein as the prior art in the field.

Further, as shown in fig. 2-4, the hook assembly 15 includes a hook sleeve 151, a connection hook 152, and a stationary handle 153. The hooking sleeve 151 is sleeved on the inside lever 12, and the hooking sleeve 151 can rotate and/or slide along the axis of the inside lever 12. The connecting hook 152 and the fixed handle 153 are both welded on the outer side wall of the hook sleeve 151, and the hook tip of the connecting hook 152 can pass through the mesh of the mesh plate 36, so that the cat ladder 100 is firmly hung on the scaffold 300 through the hook assembly 15, and the cat ladder 100 is prevented from falling off from the scaffold 300 in the transportation process.

Specifically, the weight of the fixed handle 153 is greater than the weight of the connecting hooks 152, and the fixed handle 153 is directed toward the ground when the hook tips pass through the mesh openings. In this embodiment, the connection hook 152 and the fixing handle 153 are disposed at 180 °, when the connection hook 152 is hung on the mesh plate 36, the hook tip of the connection hook 152 passes through the mesh of the mesh plate 36, at this time, the ladder stand 100 is hung on the scaffold 300, and at the same time, in order to avoid the hook from being separated from the mesh plate 36 due to interference caused by jolt or the like generated during transportation, the connection hook 152 and the fixing handle 153 are disposed at 180 ° and the weight of the fixing handle 153 is greater than that of the connection hook 152, so that the fixing handle 153 is always vertically downward or approximately vertically downward in a naturally stationary state, the shape of the connection hook 152 is approximately inverted U-shaped, at this time, the hook body of the hook contacts with the side wall and the top wall of the mesh plate 36, and the hook tip passes through the mesh of the mesh plate 36, and the connection hook 152 is locked to the mesh plate 36 under the action of the fixing handle 153. When jolting occurs in the transportation process, the connecting hook 152 can jump upwards, but due to the fact that the weight of the fixed handle 153 is large, the connecting hook 152 still falls back to the original position after jolting, and reliability in the transportation process is guaranteed. In other embodiments, the position relationship between the connecting hook 152 and the fixed handle 153 may be changed, the connecting hook 152 and the fixed handle 153 may be vertically arranged, and the shape of the hook may be adaptively changed, for example, in a semicircle shape, so that the same effect may be achieved, and the specific implementation principle is the same as that when the connecting hook and the fixed handle are arranged at 180 ° and therefore will not be described again.

Optionally, as shown in fig. 4, the stationary handle 153 is a tubular member and the hook assembly 15 further includes a movable handle 154. The movable handle 154 has an outer diameter smaller than an inner diameter of the fixed handle 153, and a portion of the movable handle 154 is inserted into the fixed handle 153, and the movable handle 154 has a length longer than that of the fixed handle 153. Because the height of the mesh plate 36 is high, there is a possibility that the height is insufficient when the fixed handle 153 is operated to lift or lower the ladder 100, and thus the movable handle 154 is provided, and the purpose of lengthening is achieved by the movable handle 154, thereby overcoming the problem of insufficient height. It is also possible to add a tubular member having an inner diameter larger than the outer diameter of the movable handle 154 on the basis of this, and to fit the tubular member over another portion of the movable handle 154, thereby achieving the purpose of further lengthening.

The invention provides a use method of a ship section up-down ladder, which is applied to the ship section up-down ladder in the embodiment. The use method of the ship section ascending and descending ladder comprises the following steps:

when the ladder 100 needs to be lowered, the hook assembly 15 is separated from the mesh plate 36, and the lower end of the ladder 100 is placed on the ground;

when the ladder 100 needs to be retracted, the lower end of the ladder 100 is lifted to the mesh plate 36, so that the hook assembly 15 is hung on the mesh plate 36.

Specifically, after the ship segments are transported in place, a person lifts the fixed handle 153 from the ground, causing the connecting hooks 152 to move upward until the hook tips of the connecting hooks 152 disengage from the mesh openings of the mesh plate 36. The fixing handle 153 is then pulled in a direction toward the mesh plate 36 to move the connecting hooks 152 away from the mesh plate 36, and the connecting hooks 152 are located entirely outside the mesh plate 36. The fixed handle 153 is operated to lower the ladder 100 until the lower end of the ladder 100 contacts the ground, and the fixed handle 153 is released, so that the ladder 100 is lowered to the ground.

When the ship is to be transported, a person lifts the fixed handle 153 from the ground, when the connecting hooks 152 approach the mesh plate 36, the fixed handle 153 is pulled towards the direction approaching the mesh plate 36, so that the connecting hooks 152 are far away from the mesh plate 36, and the connecting hooks 152 are integrally positioned outside the mesh plate 36. The fixed handle 153 is further lifted upward to position the connecting hooks 152 entirely above the mesh plate 36. Pulling the fixed handle 153 away from the mesh plate 36 moves the connecting hooks 152 toward the mesh plate 36 with the tips of the connecting hooks 152 above the mesh. If the hook tip of the connecting hook 152 is just above the mesh wire of the mesh plate 36, and thus cannot pass through the mesh, the fixing handle 153 may be lifted slightly and the hook sleeve 151 may be pushed to slide along the inside rod 12 a distance such that the hook tip of the connecting hook 152 is above the mesh. Finally, the fixing handle 153 is lowered to allow the hook tips of the coupling hooks 152 to pass through the mesh holes, thereby reliably hanging the ladder 100 on the scaffold 300.

It should be noted that when the height of the ship section is high, the movable handle 154 may be added as required to meet the operation requirement, and the specific operation steps are completely consistent with the above, so that the description is omitted.

The ship section up-down ladder and the use method thereof provided by the invention have the advantages that the occupied space is smaller when in use, the high-density placement of the ship sections is facilitated, and the inconvenience is not caused to the transportation of other ship sections. When the state of the ship section is switched, the lowering and the stowing can be completed only by a single person to perform simple operation on the ground, compared with the traditional mode, the temporary device is not required to climb up the scaffold 300 to perform lowering and stowing, double collaborative operation is not required, the labor force is saved, the labor intensity is reduced, the operation difficulty is reduced, and the potential safety hazard of personnel in the process of climbing up the scaffold 300 through the temporary device is also eliminated.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a ladder about boats and ships segmentation for supply personnel to go up and down scaffold frame (300), scaffold frame (300) include horizontal pole (31) and vertical pole setting (32), horizontal pole (31) with vertical pole setting (32) fixed connection, mesh board (36) are laid to horizontal pole (31) top, mesh board (36) with horizontal pole (31) set up perpendicularly, mesh board (36) are used for supplying personnel to walk, a serial communication port, include:

the crawling ladder (100), the crawling ladder (100) comprises an inner side rod (12) and an outer side rod (11) which are parallel to each other, a plurality of pedals (13) are arranged between the inner side rod (12) and the outer side rod (11), the top ends of the inner side rod (12) and the outer side rod (11) are rotationally connected with the horizontal cross rod (31), and the inner side rod (12) and the outer side rod (11) are respectively arranged on two sides of the vertical upright rod (32);

the hook component (15), the rotatable setting of hook component (15) is in on interior side lever (12), hook component (15) can hang cat ladder (100) on mesh board (36).

2. The ship section boarding and disembarking according to claim 1, wherein the top ends of the inner side rod (12) and the outer side rod (11) are fixedly connected with movable sleeves (14), the movable sleeves (14) are sleeved on the horizontal cross rod (31), and the inner diameter of the movable sleeves (14) is larger than or equal to the outer diameter of the horizontal cross rod (31).

3. The ship section boarding and disembarking of claim 2, wherein the shape of the movable sleeve (14) comprises a C-shape.

4. The ship segmented ladder of claim 1, wherein the distance between the inner side rod (12) and the mesh plate (36) is smaller than the distance between the outer side rod (11) and the mesh plate (36), the hook assembly (15) comprises a hook sleeve (151), a connecting hook (152) and a fixed handle (153), the hook sleeve (151) is sleeved on the inner side rod (12), the connecting hook (152) and the fixed handle (153) are welded on the outer side wall of the hook sleeve (151), and the hook tips of the connecting hook (152) can penetrate through the meshes of the mesh plate (36).

5. The ship segmented ramp according to claim 4, characterized in that the weight of the stationary handle (153) is greater than the weight of the connecting hooks (152), the stationary handle (153) pointing towards the ground when the hook tips pass through the mesh.

6. The ship segmented ladder of claim 5, wherein the fixed handle (153) is a tubular part, the hook assembly (15) further comprises a movable handle (154), an outer diameter of the movable handle (154) is smaller than an inner diameter of the fixed handle (153), the movable handle (154) is partially inserted into the fixed handle (153), and a length of the movable handle (154) is greater than a length of the fixed handle (153).

7. The ship section boarding and disembarking of claim 5, wherein the connection hook (152) and the fixed handle (153) are disposed at 180 °.

8. The ship segmented ramp according to any one of claims 1-7, wherein the ramp (100) further comprises a railing (200), the railing (200) being fixedly connected to the outer bar (11), the railing (200) being adapted to prevent personnel from falling off the side of the ramp (100).

9. A method for using a ship section to ascend and descend, which is characterized by being applied to the ship section to ascend and descend according to any one of claims 1-8, and comprising the following steps:

when the cat ladder (100) needs to be lowered, the hook assembly (15) is separated from the mesh plate (36), and the lower end of the cat ladder (100) is placed on the ground;

when the ladder (100) is required to be retracted, the lower end of the ladder (100) is lifted to the mesh plate (36), so that the hook assembly (15) is hung on the mesh plate (36).

10. The method of using a ship segmented ladder according to claim 9, characterized in that the hook assembly (15) comprises a hook sleeve (151), a connecting hook (152) and a fixed handle (153), the hook sleeve (151) is sleeved on the inner side rod (12), and the connecting hook (152) and the fixed handle (153) are welded on the outer side wall of the hook sleeve (151);

the method of disengaging the hook assembly (15) from the mesh plate (36) includes:

lifting the fixed handle (153) to move the hook assembly (15) upwards;

pulling the fixed handle (153) towards the direction approaching the mesh plate (36) to enable the connecting hook (152) to be far away from the mesh plate (36);

the method of hanging the hanger assembly (15) on the mesh plate (36) includes:

pulling the fixed handle (153) towards the direction approaching the mesh plate (36) to enable the connecting hook (152) to be far away from the mesh plate (36);

lifting the fixed handle (153) to enable the connecting hook (152) to be positioned above the mesh plate (36);

the fixed handle (153) is pulled in a direction away from the mesh plate (36) to enable the connecting hooks (152) to move towards the mesh plate (36), and the fixed handle (153) is lowered to enable the connecting hooks (152) to be hung on the mesh plate (36).