Bow and stern folding hanging ladder for slipway

Abstract

The utility model discloses a berth bow and stern folding hanging ladder, which relates to the technical field of hanging ladders and comprises a group of positioning components, the outer wall of the bottom end of one positioning component is fixedly connected with a first hanging ladder handrail, and the bottom end in the first hanging ladder handrail is slidably connected with a second hanging ladder handrail. The bottom end of one side, far away from one side of the first hanging ladder handrail, of one positioning assembly is fixedly connected with a third hanging ladder handrail, and through close fit among the limiting sliding blocks, the limiting grooves and the limiting springs, part of the hanging ladder assemblies are independently opened or stored in the ship building or maintaining process, so that the hanging ladder assemblies are not prone to falling off, and the ship building or maintaining efficiency is improved. And the positioning assembly, the lifting rail, the limiting rail, the limiting sliding block, the limiting groove, the limiting spring and other structures work cooperatively, so that the accuracy and reliability of operation are ensured, and therefore, the device can provide a stable and reliable working platform no matter the hanging ladder is partially or completely unfolded.

Description

Technical Field

[0001] The utility model relates to the technical field of hanging ladders, in particular to a bow and stern foldable hanging ladder for a slipway. Background Art

[0002] The foldable hanging ladder for slipway is one of the indispensable devices on the ship. This kind of hanging ladder can provide a stable working platform, which is convenient for craftsmen to carry out welding, assembly and quality inspection. It uses multiple components connected by slide rails. When storing, it needs to be tied and fixed with ropes.

[0003] Existing slipway ladders typically utilize multiple components connected by sliding rails. However, in practice, due to the lack of positional constraints on individual components, deploying the ladder typically requires simultaneous deployment of all components, making it difficult to deploy only a portion. To address this issue, we developed a slipway bow and stern folding ladder. Utility Model Content

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a fore and stern foldable hanging ladder for a slipway.

[0005] The camming member is a pair of lockholes, each of which is connected to the bottom of the second locking cam, and the lockhole has a pair of lockholes on each side of the lockhole, and the lockhole has a first locking cam, and a second locking cam is connected to the bottom of the second locking cam.

[0006] As mentioned above, a cross bar is fixedly connected between the corresponding surfaces of the positioning components, and the positioning components are fixedly connected to each other through the cross bar. The cross bar is respectively located on one side of the corresponding surfaces of the first hanging ladder handrail, the second hanging ladder handrail, the third hanging ladder handrail and the fourth hanging ladder handrail, and the first hanging ladder handrail, the third hanging ladder handrail and the second hanging ladder handrail, and the fourth hanging ladder handrail are fixedly connected to each other through the cross bar.

[0007] As mentioned above, the top outer walls of the second hanging ladder handrail and the fourth hanging ladder handrail are respectively connected with the bottom outer walls of the first hanging ladder handrail and the third hanging ladder handrail, and the bottom ends of the inner walls of the first hanging ladder handrail and the third hanging ladder handrail are slidably connected with the top outer walls of the second hanging ladder handrail and the fourth hanging ladder handrail. The second hanging ladder handrails are interspersed and slidably connected with each other from bottom to top, and the fourth hanging ladder handrails are connected with each other from bottom to top.

[0008] As mentioned above, one side of the outer wall of the lifting rail is connected with the inner side of the first hanging ladder handrail, the second hanging ladder handrail, the third hanging ladder handrail and the fourth hanging ladder handrail, and the inner side of the first hanging ladder handrail, the second hanging ladder handrail, the third hanging ladder handrail and the fourth hanging ladder handrail is connected with the outer wall of one side of the lifting rail in a sliding manner.

[0009] As mentioned above, a plurality of limit rails are fixedly connected to both sides of the inner walls of the first hanging ladder handrail, the second hanging ladder handrail, the third hanging ladder handrail and the fourth hanging ladder handrail, and the limit rails are respectively located on both sides of the top of the second hanging ladder handrail and the fourth hanging ladder handrail, the outer wall of the bottom end of the limit rail is connected through one side of the top surface of the second hanging ladder handrail and the fourth hanging ladder handrail, and the outer wall of one side of the limit rail is slidably connected to one side of the top of the second hanging ladder handrail and the fourth hanging ladder handrail.

[0010] As mentioned above, the top ends of the inner walls of the third hanging ladder handrail and the fourth hanging ladder handrail are fixedly connected to the limit springs, and the outer wall of the bottom end of the limit spring is fixedly connected to the center of the top surface of the fourth hanging ladder handrail. The top end of the inner part of the fourth hanging ladder handrail is also fixedly connected to multiple slide rails, and the top end of the inner part of the fourth hanging ladder handrail is slidably connected to the outer walls of the limit slider on both sides through the slide rails.

[0011] As mentioned above, a positioning spring is fixedly connected to the top end of the inner portion of the fourth hanging ladder handrail, and an outer wall of one end of the positioning spring is fixedly connected to one side of the outer wall of the limiting slider.

[0012] Compared with the existing technology, this kind of shipyard bow and stern folding hanging ladder has the following beneficial effects:

[0013] 1. The utility model is good. The following is the simplified content after retaining the numbers as required:

[0014] By placing the cross bar on the positioning assembly, the first hanging ladder handrail, the second hanging ladder handrail, the third hanging ladder handrail and the fourth hanging ladder handrail, and combining them with the lifting rail, precise limitation of the hanging ladder assembly is achieved. During the movement, the second hanging ladder handrail and the fourth hanging ladder handrail are limited by the outer wall of the lifting rail and the inner wall of the first hanging ladder handrail and the third hanging ladder handrail, and can only move vertically, ensuring the flexibility and reliability of partial or full deployment of the hanging ladder. It is suitable for the diverse needs of working platforms in ship construction or maintenance, thereby achieving precise control of the sliding trajectory of the hanging ladder assembly and enhancing the stability and safety of the overall structure. In addition, through such a limiting structure, it is convenient for staff to quickly deploy or store part of the hanging ladder assembly later.

[0015] When the ladder is retracted, the operator only needs to press the limit slider at the top of the fourth ladder handrail. Since a limit spring is provided between the fourth and third ladder handrails, the pressing of the limit slider will separate them from the limit groove and lose support. The limit rails on both sides of the inner wall of each ladder handrail cooperate with the lifting rail to ensure that the second and fourth ladder handrails can only move vertically. As the limit spring retracts, the fourth ladder handrail moves inward along the limit rail to the limit groove and is locked. The deployment process is the opposite. After the limit slider is released, the limit spring pushes the handrail to deploy vertically along the lifting rail until it is The limit slider is engaged and locked with another limit slot, thereby achieving precise control and stable operation of the hanging ladder. Through the close cooperation between the limit slider, the limit slot and the limit spring, the device can independently open or store part of the hanging ladder components during ship construction or maintenance without the need to open or retract the entire ladder. The positioning components, lifting rails and limit rails, the limit slider and limit slot, the limit spring and other structures work together to ensure the accuracy and reliability of the operation. Therefore, whether the hanging ladder is partially or fully deployed, the device can provide a stable and reliable working platform.

[0016] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a partial exploded three-dimensional structural diagram of the first hanging ladder handrail, the second hanging ladder handrail, the third hanging ladder handrail and the fourth hanging ladder handrail of the present invention;

[0019] Figure 3 This is a partially cutaway exploded perspective structural diagram of the first hanging ladder handrail of the present invention;

[0020] Figure 4 It is a partially cutaway three-dimensional structural diagram of the third hanging ladder handrail and the fourth hanging ladder handrail of the present invention;

[0021] Figure 5 This is a partially cutaway three-dimensional structural diagram of a fourth hanging ladder handrail of the present invention;

[0022] Figure 6 For this utility model Figure 5 Schematic diagram of the local three-dimensional structure of A.

[0023] In the figure: 1. Positioning assembly; 2. First hanging ladder handrail; 201. Second hanging ladder handrail; 202. Third hanging ladder handrail; 203. Fourth hanging ladder handrail; 204. Lifting rail; 205. Crossbar; 3. Limiting slot; 301. Limiting slider; 302. Limiting rail; 303. Limiting spring; 304. Slide rail; 305. Positioning spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-6 As shown, the utility model provides a technical solution: a ship slipway bow and stern folding hanging ladder, comprising a group of positioning components 1, wherein the outer wall of the bottom end of one positioning component 1 is fixedly connected to a first hanging ladder handrail 2, and the bottom end of the first hanging ladder handrail 2 is slidably connected to a second hanging ladder handrail 201, and the bottom end of one positioning component 1 away from the first hanging ladder handrail 2 is fixedly connected to a third hanging ladder handrail 202, and the bottom end of the third hanging ladder handrail 202 is slidably connected to a fourth hanging ladder handrail 203, and the corresponding side of the positioning component 1 is fixedly connected to a lifting rail 204, and the lifting rail 204 is simultaneously located on one side of the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203. The outer walls of the tops of the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 are slidably connected to the inner bottom ends of the first hanging ladder handrail 2 and the third hanging ladder handrail 202 through the lifting rail 204. A plurality of limiting grooves 3 are provided on the bottom of one side of the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203, and the inner top of the fourth hanging ladder handrail 203 is slidably connected to a limiting slider 301.

[0026] By placing the crossbar 205 on the positioning assembly 1, the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203, combined with the lifting rail 204, the precise positioning of the hanging ladder assembly is achieved. When it is necessary to retract, the limiting slider 301 of the fourth hanging ladder handrail 203 is pressed, and the relative movement and locking of the handrails are achieved through the cooperation of the limiting spring 303 and the limiting groove 3. When unfolding, the opposite operation is performed, and the release of the limiting slider 301 will push the handrail to move vertically along the lifting rail 204 to a fully unfolded state, thereby ensuring the flexibility and reliability of partial or full deployment of the hanging ladder , which is suitable for the diverse needs of working platforms in ship construction or maintenance. Therefore, through the close cooperation between the limiting slider 301, the limiting groove 3 and the limiting spring 303, the device can independently open or store part of the hanging ladder assembly during the ship construction or maintenance process without the need to open or retract the entire ladder assembly. The positioning assembly 1, the lifting rail 204 and the limiting rail 302, the limiting slider 301 and the limiting groove 3, the limiting spring 303 and other structures work together to ensure the accuracy and reliability of the operation. Therefore, whether the hanging ladder is partially or fully deployed, the device can provide a stable and reliable working platform.

[0027] like Figure 1-4 As shown, a cross bar 205 is fixedly connected between the corresponding surfaces of the positioning components 1, and the positioning components 1 are fixedly connected to each other through the cross bar 205. The cross bars 205 are respectively located on one side of the corresponding surfaces of the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203, and the first hanging ladder handrail 2, the third hanging ladder handrail 202 and the second hanging ladder handrail 201, the fourth hanging ladder handrail 203 are all fixedly connected to each other through the cross bar 205. The top outer walls of the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 are respectively connected with the bottom outer walls of the first hanging ladder handrail 2 and the third hanging ladder handrail 202, and the first hanging ladder handrail 2, the third hanging ladder handrail 202 and the second hanging ladder handrail 201, the fourth hanging ladder handrail 203 are respectively connected with the bottom outer walls of the first hanging ladder handrail 2 and the third hanging ladder handrail 202, and the first hanging ladder handrail 2, the third hanging ladder handrail 202 and the second hanging ladder handrail 201, the fourth hanging ladder handrail The bottom ends of the inner walls of the first and third hanging ladder handrails 202 are slidably connected to the outer walls of the tops of the second and fourth hanging ladder handrails 201 and 203. The second hanging ladder handrails 201 are interwoven and slidably connected from bottom to top. The fourth hanging ladder handrails 203 are connected through and through each other from bottom to top. One side of the outer wall of the lifting rail 204 is connected through and through the inner sides of the first, second, third and fourth hanging ladder handrails 201, 202 and 203. The inner sides of the first, second, third and fourth hanging ladder handrails 201, 202 and 203 are slidably connected to the outer wall of one side of the lifting rail 204.

[0028] By placing the crossbar 205 on the positioning assembly 1, the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203, these structures are combined into a plurality of hanging ladder assemblies, and the lifting rail 204 is respectively passed through one side of the inner part of the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203, and the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202, the fourth hanging ladder handrail 203 and the crossbar 205 are limited. At the same time, considering that the top of the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 The outer wall penetrates and is slidably connected to the inner bottom ends of the first hanging ladder handrail 2 and the third hanging ladder handrail 202, so that the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 are limited by the outer wall of the lifting rail 204 and the inner walls of the first hanging ladder handrail 2 and the third hanging ladder handrail 202 during movement, and can only move vertically along the outer wall of the lifting rail 204 and the inner walls of the first hanging ladder handrail 2 and the third hanging ladder handrail 202, thereby achieving precise control of the sliding trajectory of the hanging ladder assembly and enhancing the stability and safety of the overall structure. In addition, through such a limiting structure, it is convenient for the staff to quickly unfold or store part of the hanging ladder assembly later.

[0029] like Figure 1-6 As shown, a plurality of limiting rails 302 are fixedly connected on both sides of the inner walls of the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203, and the limiting rails 302 are respectively located on both sides of the top of the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203, and the outer wall of the bottom end of the limiting rail 302 is connected with one side of the top surface of the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203, and the outer wall of one side of the limiting rail 302 is slidably connected with one side of the top of the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203. 2 and the top of the inner wall of the fourth hanging ladder handrail 203 are fixedly connected to the limit spring 303, and the outer wall of the bottom end of the limit spring 303 is fixedly connected to the center of the top surface of the fourth hanging ladder handrail 203, and the inner top of the fourth hanging ladder handrail 203 is fixedly connected to multiple slide rails 304 at the same time, and the inner top of the fourth hanging ladder handrail 203 is slidably connected to the two sides of the outer wall of the limit slider 301 through the slide rails 304, and the inner top of the fourth hanging ladder handrail 203 is fixedly connected to the positioning spring 305, and the outer wall of one end of the positioning spring 305 is fixedly connected to one side of the outer wall of the limit slider 301.

[0030] When the device needs to be retracted, it is only necessary to press the limiting slider 301 at the top of the fourth hanging ladder handrail 203. Since a limiting spring 303 is provided between the fourth hanging ladder handrail 203 and the third hanging ladder handrail 202, when the limiting slider 301 is pressed into the fourth hanging ladder handrail 203, the limiting slider 301 separates from the inner wall of the limiting groove 3, and the fourth hanging ladder handrail 203 loses the support from the inner wall of the limiting groove 3 at the bottom of the third hanging ladder handrail 202.

[0031] Given that a plurality of limiting rails 302 are provided on both sides of the inner walls of the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202, and the fourth hanging ladder handrail 203, and the limiting rails 302 are used to limit the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203, and cooperate with the lifting rail 204 so that the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 can only move vertically along the outer walls of the lifting rail 204 and the limiting rail 302 during movement;

[0032] As the limiting spring 303 contracts, the limiting spring 303 drives the fourth hanging ladder handrail 203 to move along the limiting rail 302 toward the inner center of the third hanging ladder handrail 202. When the limiting slider 301 reaches one of the limiting grooves 3 at the center of the outer wall of the third hanging ladder handrail 202, the outer wall of the limiting slider 301 loses the support from the inner wall of the third hanging ladder handrail 202. The limiting slider 301 is pushed into the inner part of the limiting groove 3 by the positioning spring 305 and engages with it, thereby fixing the fourth hanging ladder handrail 203.

[0033] Thus, part of the process of hanging the ladder is completed. When the hanging ladder needs to be unfolded, the operator presses the limit slider 301 at the top of the fourth hanging ladder handrail 203. This action causes the limit slider 301 to disengage from the limit groove 3 of the third hanging ladder handrail 202 and pull the corresponding crossbar 205 to unfold the part of the hanging ladder.

[0034] As the limiting slider 301 is released, the limiting spring 303 begins to expand, pushing the fourth hanging ladder handrail 203 to move vertically along the lifting rail 204 and the outer wall of the limiting rail 302. At the same time, since the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 are connected by the same mechanism, they will also move synchronously. When the fourth hanging ladder handrail 203 moves to the maximum extended position, the limiting slider 301 at its top will be aligned with the other limiting groove 3 of the third hanging ladder handrail 202 again and engage with it.

[0035] Then, the hanging ladder is locked in a fully extended state. At the same time, the second hanging ladder handrail 201 is also locked with the first hanging ladder handrail 2 through a similar mechanism. Therefore, through the close cooperation between the limit slider 301, the limit groove 3 and the limit spring 303, the device can realize the independent opening or storage of part of the hanging ladder assembly during the ship construction or maintenance process without the need to fully open or retract the entire device. The positioning assembly 1, the lifting rail 204 and the limit rail 302, the limit slider 301 and the limit groove 3, the limit spring 303 and other structures work together to ensure the accuracy and reliability of the operation. Therefore, whether the hanging ladder is partially or fully extended, the device can provide a stable and reliable working platform.

[0036] Working principle: By placing the crossbar 205 on the positioning assembly 1, the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203, these structures are combined into multiple hanging ladder assemblies, and the lifting rail 204 is respectively passed through one side of the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202 and the fourth hanging ladder handrail 203. and the crossbar 205 for limiting. At the same time, since the outer walls of the tops of the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 penetrate and are slidably connected with the inner bottom ends of the first hanging ladder handrail 2 and the third hanging ladder handrail 202, the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 are limited by the outer wall of the lifting rail 204 and the inner walls of the first hanging ladder handrail 2 and the third hanging ladder handrail 202 during movement, and can only move vertically along the outer wall of the lifting rail 204 and the inner walls of the first hanging ladder handrail 2 and the third hanging ladder handrail 202.

[0037] When the device needs to be retracted, it is only necessary to press the limiting slider 301 at the top of the fourth hanging ladder handrail 203. Since a limiting spring 303 is provided between the fourth hanging ladder handrail 203 and the third hanging ladder handrail 202, when the limiting slider 301 is pressed into the fourth hanging ladder handrail 203, the limiting slider 301 separates from the inner wall of the limiting groove 3, and the fourth hanging ladder handrail 203 loses the support from the inner wall of the limiting groove 3 at the bottom of the third hanging ladder handrail 202.

[0038] Given that a plurality of limiting rails 302 are provided on both sides of the inner walls of the first hanging ladder handrail 2, the second hanging ladder handrail 201, the third hanging ladder handrail 202, and the fourth hanging ladder handrail 203, and the limiting rails 302 are used to limit the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203, and cooperate with the lifting rail 204 so that the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 can only move vertically along the outer walls of the lifting rail 204 and the limiting rail 302 during movement;

[0039] As the limiting spring 303 contracts, the limiting spring 303 drives the fourth hanging ladder handrail 203 to move along the limiting rail 302 toward the inner center of the third hanging ladder handrail 202. When the limiting slider 301 reaches one of the limiting grooves 3 at the center of the outer wall of the third hanging ladder handrail 202, the outer wall of the limiting slider 301 loses the support from the inner wall of the third hanging ladder handrail 202. The limiting slider 301 is pushed into the inner part of the limiting groove 3 by the positioning spring 305 and engages with it, thereby fixing the fourth hanging ladder handrail 203.

[0040] Thus, part of the process of hanging the ladder is completed. When the hanging ladder needs to be unfolded, the operator presses the limit slider 301 at the top of the fourth hanging ladder handrail 203. This action causes the limit slider 301 to disengage from the limit groove 3 of the third hanging ladder handrail 202 and pull the corresponding crossbar 205 to unfold the part of the hanging ladder.

[0041] As the limiting slider 301 is released, the limiting spring 303 begins to expand, pushing the fourth hanging ladder handrail 203 to move vertically along the lifting rail 204 and the outer wall of the limiting rail 302. At the same time, since the second hanging ladder handrail 201 and the fourth hanging ladder handrail 203 are connected by the same mechanism, they will also move synchronously. When the fourth hanging ladder handrail 203 moves to the maximum extended position, the limiting slider 301 at its top will be aligned with the other limiting groove 3 of the third hanging ladder handrail 202 again and engage with it.

[0042] The hanging ladder is then locked in a fully extended state. At the same time, the second hanging ladder handrail 201 is also locked with the first hanging ladder handrail 2 through a similar mechanism. Therefore, through the close cooperation between the limiting slider 301, the limiting groove 3 and the limiting spring 303, the device can realize the independent opening or storage of part of the hanging ladder assembly during the construction or maintenance of the ship.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship's bow and stern folding ladder, comprising a set of positioning components (1), characterized in that: The outer wall of the bottom end of one of the positioning components (1) is fixedly connected to the first hanging ladder handrail (2), and the bottom end of the first hanging ladder handrail (2) is slidably connected to the second hanging ladder handrail (201); the bottom end of one of the positioning components (1) away from the first hanging ladder handrail (2) is fixedly connected to the third hanging ladder handrail (202), and the bottom end of the third hanging ladder handrail (202) is slidably connected to the fourth hanging ladder handrail (203); the corresponding side of the positioning component (1) is fixedly connected to the lifting rail (204), and the lifting rail (204) is simultaneously located on the first hanging ladder handrail The second hanging ladder handrail (201), the third hanging ladder handrail (202) and the fourth hanging ladder handrail (203) are connected to the inner side of the second hanging ladder handrail (201) and the fourth hanging ladder handrail (203); the outer walls of the tops of the second hanging ladder handrail (201) and the fourth hanging ladder handrail (203) are slidably connected to the inner bottom ends of the first hanging ladder handrail (2) and the third hanging ladder handrail (202) through lifting rails (204); a plurality of limiting grooves (3) are provided on the bottoms of one side of the third hanging ladder handrail (202) and the fourth hanging ladder handrail (203), and the inner top end of the fourth hanging ladder handrail (203) is slidably connected to a limiting slider (301).

2. The bow and stern folding hanging ladder of the slipway according to claim 1, characterized in that: A crossbar (205) is fixedly connected between corresponding surfaces of the positioning components (1), and the positioning components (1) are fixedly connected to each other through the crossbar (205). The crossbar (205) is respectively located on one side of corresponding surfaces of the first hanging ladder handrail (2), the second hanging ladder handrail (201), the third hanging ladder handrail (202), and the fourth hanging ladder handrail (203), and the first hanging ladder handrail (2), the third hanging ladder handrail (202), the second hanging ladder handrail (201), and the fourth hanging ladder handrail (203) are fixedly connected to each other through the crossbar (205).

3. The bow and stern folding hanging ladder of the slipway according to claim 2 is characterized by: The top outer walls of the second hanging ladder handrail (201) and the fourth hanging ladder handrail (203) are respectively connected to the bottom outer walls of the first hanging ladder handrail (2) and the third hanging ladder handrail (202), and the bottom ends of the inner walls of the first hanging ladder handrail (2) and the third hanging ladder handrail (202) are slidably connected to the top outer walls of the second hanging ladder handrail (201) and the fourth hanging ladder handrail (203). The second hanging ladder handrail (201) is interlaced and slidably connected with each other from bottom to top, and the fourth hanging ladder handrail (203) is connected to each other from bottom to top.

4. The bow and stern folding hanging ladder of the slipway according to claim 3 is characterized by: One side of the outer wall of the lifting rail (204) is connected to the inner side of the first hanging ladder handrail (2), the second hanging ladder handrail (201), the third hanging ladder handrail (202) and the fourth hanging ladder handrail (203), and the inner side of the first hanging ladder handrail (2), the second hanging ladder handrail (201), the third hanging ladder handrail (202) and the fourth hanging ladder handrail (203) is connected to the outer wall of one side of the lifting rail (204) in a sliding manner.

5. The bow and stern foldable hanging ladder of a slipway according to claim 1, characterized in that: A plurality of limiting rails (302) are fixedly connected to both sides of the inner walls of the first hanging ladder handrail (2), the second hanging ladder handrail (201), the third hanging ladder handrail (202) and the fourth hanging ladder handrail (203), and the limiting rails (302) are respectively located on both sides of the top of the second hanging ladder handrail (201) and the fourth hanging ladder handrail (203), the outer wall of the bottom end of the limiting rail (302) is connected to one side of the top surface of the second hanging ladder handrail (201) and the fourth hanging ladder handrail (203), and the outer wall of one side of the limiting rail (302) is connected to one side of the top of the second hanging ladder handrail (201) and the fourth hanging ladder handrail (203) in a sliding manner.

6. The bow and stern foldable hanging ladder of the slipway according to claim 5, characterized in that: The top ends of the inner walls of the third hanging ladder handrail (202) and the fourth hanging ladder handrail (203) are fixedly connected to the limit spring (303), and the outer wall of the bottom end of the limit spring (303) is fixedly connected to the center of the top surface of the fourth hanging ladder handrail (203). The top end of the inner wall of the fourth hanging ladder handrail (203) is fixedly connected to a plurality of slide rails (304), and the top end of the inner wall of the fourth hanging ladder handrail (203) is slidably connected to both sides of the outer wall of the limit slider (301) through the slide rails (304).

7. The bow and stern foldable hanging ladder of the slipway according to claim 6, characterized in that: A positioning spring (305) is fixedly connected to the top end of the fourth hanging ladder handrail (203), and an outer wall of one end of the positioning spring (305) is fixedly connected to one side of the outer wall of the limiting slider (301).

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