Quickly detachable and mountable movable rail for ship
By using a rotary locking mechanism and modular railing posts, the marine railings can be quickly disassembled and installed, solving the problems of low disassembly and assembly efficiency and easy damage to fasteners in existing technologies, thus improving ease of operation and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏新扬子造船有限公司
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-24
AI Technical Summary
Existing marine railings have low assembly and disassembly efficiency, rely on multiple people to operate, and have fasteners that are easily damaged and have a short service life.
The base and modular railing posts adopt a rotating locking mechanism. Tool-free operation is achieved by rotating and locking the rectangular hole of the base with the stop block of the railing post at 90°. Combined with the threadable spiral eye ring and rigging spiral buckle, quick disassembly and installation are possible.
It can be quickly disassembled and assembled by a single person, greatly improving disassembly and assembly efficiency. Its service life is not affected by fasteners, and it has excellent resistance to ship vibration, with a service life of more than 10 years.
Smart Images

Figure CN224546223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ship safety protection technology, and in particular to a movable marine railing that can be quickly disassembled and installed. Background Technology
[0002] Detachable railings are often required in certain areas of ships. For example, when spare parts in the engine room are hoisted out for maintenance, protective railings need to be installed around the hoisting opening. After maintenance, the railings need to be removed and replaced with grating. During navigation, to ensure the safe passage of crew members in stormy weather, continuous railings need to be installed on the freeboard deck away from the hull edge. These railings are then removed when the ship is berthed for loading and unloading cargo. In such environments, railings need to be quick and efficient to disassemble and install. Existing solutions have the following drawbacks: (1) Conventional bolt-connected railings: see Figure 1 Disassembly and assembly require two people to work together, one to fix the railing and the other to tighten the bolts, which takes a long time each time; sometimes the entire railing weighs more than 30kg, and there is a risk of it falling during handling; repeated disassembly and assembly can cause the bolts to strip, so the whole railing needs to be replaced regularly.
[0003] (2) Quick-release pin structure: relying on spring pins, the continuous vibration of the ship can easily cause the pins to accidentally disengage; the metal pins are corroded and stuck in the salt spray environment, resulting in a high failure rate.
[0004] Therefore, this utility model proposes a marine movable railing that can be quickly disassembled and installed, which can realize the quick disassembly and installation of the railing posts, making the operation more convenient and efficient, and the service life is not affected by fasteners, and can be repeatedly disassembled and installed. Summary of the Invention
[0005] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a marine movable railing that can be quickly disassembled and installed, suitable for fixing storm lines around the engine room hoisting opening and on the freeboard deck.
[0006] The purpose of this utility model is achieved as follows: A quick-release and installable marine movable railing includes four railing posts: three middle railing posts and one end railing post, which are arranged in pairs to form the four sides of a cube or cuboid. The intermediate railing post includes a railing post body A, with an eye ring at the top and two hanging rings A in the middle; a stop block A is provided at the bottom of the railing post body A, and the stop block A is set perpendicular to the railing post body A. The end railing post includes a railing post body B, with two upper hanging rings B at the top of the railing post body B; two lower hanging rings B in the middle of the railing post body B, the positions of the two lower hanging rings B corresponding one-to-one with the positions of the two upper hanging rings B; and a stop block B at the bottom of the railing post body B, the stop block B being perpendicular to the railing post body B. The center line of the eye ring and the center line of the upper hanging ring B are on the same horizontal plane. The end of the upper steel wire rope is provided with a steel wire rope loop. One end of the upper steel wire rope starts from one of the upper hanging rings of the end railing post, passes through the eye rings of the three intermediate railing posts, and then the steel wire rope loop is connected and fixed to another upper hanging ring B of the end railing post through a rigging screw buckle. Thus, the upper steel wire rope forms a square. The hanging ring A of the middle railing post and the lower hanging ring B of the end railing post are on the same horizontal line. The end of the lower wire rope is provided with a wire rope loop. One end of the lower wire rope starts from one of the lower hanging rings B of the end railing post, passes through the hanging rings A of the three middle railing posts, and then the wire rope loop is connected and fixed to the other lower hanging ring B of the end railing post by a rigging screw buckle. Thus, the lower wire rope forms a square and is arranged vertically parallel to the upper wire rope. The bottoms of the middle and end railing posts are movably inserted into the movable railing base; the movable railing base includes an upper base plate, a lower base plate, and a pad plate. The upper and lower base plates are two-layered slotted structures, and the top plate of the upper base plate and the lower base plate have the same and corresponding lock holes.
[0007] Furthermore, the eye ring is a spiral ring, which facilitates the passage of the upper steel wire rope.
[0008] Furthermore, the two hanging rings A of the railing post body A are respectively oriented towards the adjacent railing post, that is, they are oriented perpendicular to each other, which facilitates the passage of the lower steel wire rope.
[0009] Furthermore, the upper hanging rings B are respectively oriented towards their adjacent railing posts, that is, oriented perpendicular to each other, which facilitates the fixing of the end of the upper steel wire rope; the lower hanging rings B are respectively oriented towards their adjacent railing posts, oriented perpendicular to each other, which facilitates the fixing of the end of the lower steel wire rope.
[0010] Furthermore, the upper seat plate is in the shape of an inverted U, including two side plates and a top plate connected to the side plates at both ends respectively, and the bottom ends of the side plates of the upper seat plate are respectively set on the pad plate.
[0011] Furthermore, the lower seat plate is disposed between the upper seat plate and the pad plate. The lower seat plate is a horizontal plate, and its two ends are respectively connected to the inner walls of the two side plates of the upper seat plate. The lower seat plate is arranged parallel to the top plate and the pad plate of the upper seat plate.
[0012] Furthermore, the lock hole includes a circular hole and a rectangular hole that are connected, and the lock holes of the upper plate and the lower plate are formed by a rectangular hole in the same direction.
[0013] Furthermore, the width of the stop block A and the stop block B is 10mm; the diameter of the round hole of the lock hole is 44mm, and the width of the rectangular hole is 14mm.
[0014] Furthermore, the inner wall of the rectangular hole of the lock hole is provided with a stainless steel and polytetrafluoroethylene composite bushing, and the surfaces of the stop block A and stop block B are provided with a stainless steel core covered with a wear-resistant nylon layer to reduce the wear of the stop blocks.
[0015] Furthermore, the stop blocks A and B at the bottom of the intermediate and end railing posts are replaceable stop blocks. The connection between the bottom of the intermediate railing post and the stop block A is a dovetail groove plug-in type, and the connection between the bottom of the end railing post and the stop block B is a dovetail groove plug-in type.
[0016] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a marine movable railing that can be quickly disassembled and installed. The base has no bolt fasteners, and the rotation locking mechanism enables tool-free operation. No disassembly or assembly tools are required, and it can be operated by a single person, greatly improving disassembly and assembly efficiency. The operation is more convenient and efficient. The service life of the movable railing of this utility model is not affected by fasteners, and it can be repeatedly disassembled and installed. Attached Figure Description
[0017] Figure 1 This is a structural diagram of an existing bolt-connected railing.
[0018] Figure 2 This is a schematic diagram of the structure of this utility model.
[0019] Figure 3 This is a schematic diagram of the structure of the middle railing post of this utility model.
[0020] Figure 4 This is a schematic diagram of the structure of the end railing post of this utility model.
[0021] Figure 5 This is a schematic diagram of the structure of the movable railing base of this utility model.
[0022] Figure 6 This is a top view of the movable railing base of this utility model.
[0023] Figure 7 This is a schematic diagram showing the movable railing base of this utility model inserted into the railing.
[0024] Figure 8 This is a top view of the locked and movable states of the movable railing of this utility model.
[0025] in: 1. Middle railing post, A1.1 railing post body, 1.2 eye ring, A1.3 hanging ring, A1.4 stop block, 2. End railing post, B2.1 railing post body, B2.2 upper hanging ring, B2.3 lower hanging ring, B2.4 stop block, 3. Movable railing base, 3.1 upper seat plate, 3.2 lower seat plate, 3.3 pad plate, 3.4 lock hole, 4.1 upper steel wire rope, 4.2 lower steel wire rope, 5. rigging spiral buckle, 6. steel wire rope collar, 7. grating. Detailed Implementation
[0026] To better understand the technical solution of this utility model, a detailed description will be provided below in conjunction with relevant illustrations. It should be understood that the specific embodiments described below are not intended to limit the specific implementation of the technical solution of this utility model, but are merely possible implementations of the technical solution of this utility model. It should be noted that the descriptions of the positional relationships of the components herein, such as component A being located above component B, are based on the relative positions of the components in the illustrations and are not intended to limit the actual positional relationships of the components. Example 1
[0027] See Figure 2-8 , Figure 2 A structural schematic diagram of a quick-detachable and installable marine movable railing according to Embodiment 1 is shown. As shown in the figure, the quick-detachable and installable marine movable railing according to Embodiment 1 includes four railing posts: three middle railing posts 1 and one end railing post 2. These four railing posts are arranged in pairs to form the four sides of a cube or cuboid. The four railing posts are installed around the lifting opening that needs maintenance. When not under maintenance, the lifting opening is covered with a galvanized steel grating 7. When maintenance is required, the grating 7 is removed.
[0028] The intermediate railing post 1 includes a railing post body A1.1. A spiral-shaped eye ring 1.2 is located at the top of the railing post body A1.1, facilitating the passage of the upper steel wire rope 4.1. Two hanging rings A1.3 are located in the middle of the railing post body A1.1, facing each other perpendicularly to the adjacent railing post, facilitating the passage of the lower steel wire rope 4.2. A stop block A1.4 is located at the bottom of the railing post body A1.1, perpendicular to the railing post body A1.1. The end railing post 2 includes a railing post body B2.1. The top of the railing post body B2.1 has two upper hanging rings B2.2, each facing the adjacent railing post (perpendicular to each other) to facilitate fixing the end of the upper steel wire rope 4.1. The middle of the railing post body B2.1 has two lower hanging rings B2.3, whose positions correspond one-to-one with the positions of the two upper hanging rings B2.2, also facing the adjacent railing post (perpendicular to each other) to facilitate fixing the end of the lower steel wire rope 4.2. The bottom of the railing post body B2.1 has a stop block B2.4, which is perpendicular to the railing post body B2.1. The width of the stop block A1.4 and the stop block B2.4 is 10mm.
[0029] The center line of the eye ring 1.2 is on the same horizontal plane as the center line of the upper hanging ring B2.2. The end of the upper wire rope 4.1 is provided with a wire rope loop 6. One end of the upper wire rope 4.1 starts from one of the upper hanging rings B2.2 of the end railing post 2, passes through the eye rings 1.2 of the three intermediate railing posts 1, and then the wire rope loop 6 is connected and fixed to the other upper hanging ring B2.2 of the end railing post 2 by the rigging screw buckle 5. Thus, the upper wire rope 4.1 forms a square. The hanging ring A1.3 of the intermediate railing post 1 and the lower hanging ring B2.3 of the end railing post 2 are located on the same horizontal line. The end of the lower wire rope 4.2 is provided with a wire rope collar 6. One end of the lower wire rope 4.2 starts from one of the lower hanging rings B2.3 of the end railing post 2, passes through the hanging rings A1.3 of the three intermediate railing posts 1, and then the wire rope collar 6 is connected and fixed to the other lower hanging ring B2.3 of the end railing post 2 by the rigging screw buckle 5. Thus, the lower wire rope 4.2 forms a square, which is arranged vertically parallel to the upper wire rope 4.1.
[0030] The bottoms of the middle railing post 1 and the end railing post 2 are both set on the movable railing base 3.
[0031] The movable railing base 3 includes an upper base plate 3.1, a lower base plate 3.2, and a pad plate 3.3. The upper base plate 3.1 is an inverted U-shape, including two side plates and a top plate connected to the side plates at both ends. The bottom ends of the side plates of the upper base plate 3.1 are respectively set on the pad plate 3.3. The lower base plate 3.2 is set between the upper base plate 3.1 and the pad plate 3.3. The lower base plate 3.2 is a horizontal plate. The two ends of the lower base plate 3.2 are respectively connected to the inner walls of the two side plates of the upper base plate 3.1. The lower base plate 3.2 is parallel to the top plate and the pad plate 3.3 of the upper base plate 3.1. The upper base plate 3.1 and the lower base plate 3.2 are two-layer slotted structures. The top plate of the upper base plate 3.1 and the lower base plate 3.2 have the same and corresponding lock holes 3.4. The locking hole 3.4 includes a circular hole and a rectangular hole. The circular hole has a diameter of 44mm. The locking holes 3.4 of the upper plate 3.1 and the lower plate 3.2 are opened in the same direction with a rectangular hole 14mm wide. The circular hole is used to allow the middle railing post 1 and the end railing post 2 to be inserted. The rectangular hole is used to allow the stop block A1.4 and the stop block B2.4 to pass through. After the railing post with the stop block is inserted into the movable railing base, it is rotated 90 degrees to make the stop block and the rectangular hole misaligned. The railing post cannot be pulled out of the movable railing base, thus locking the railing post. When disassembling the movable railing, first loosen the wire rope, then rotate the movable railing 90 degrees so that the position of the stop block is consistent with the rectangular hole, and then the railing post can be pulled out of the movable railing base.
[0032] A section of the threaded structure of the body of the rigging spiral buckle 5 is used to tighten or loosen the wire rope.
[0033] The wire rope sling 6 is used for looping and fixing the end of the wire rope, and needs to be used in conjunction with 2 to 3 wire rope clamps. Example 2
[0034] This embodiment 2 relates to a marine movable railing that can be quickly disassembled and installed, which differs from embodiment 1 in that: In this embodiment, a 3° sloping drainage groove is provided on the pad 3.3 of the movable railing base 3 to guide the accumulated water to the side of the hull.
[0035] In this embodiment, the inner wall of the rectangular hole of the lock hole 3.4 is provided with a stainless steel-PTFE composite bushing to reduce the wear of the stop block.
[0036] In this embodiment, the stop blocks at the bottom of the middle railing post 1 and the end railing post 2 are replaceable stop blocks. The connection between the bottom of the middle railing post 1 and the end railing post 2 and the stop blocks is a dovetail groove plug-in type. The surface of the stop blocks is provided with a stainless steel core covered with a wear-resistant nylon layer to increase service life.
[0037] The operation procedure for a quick-detachable and installable marine movable railing in Embodiment 2 is as follows: Base pre-installed: Weld the base to the pre-set position on the deck, ensuring that the drainage channel is angled outwards.
[0038] Stop block assembly: Insert the stop block into the dovetail groove of the railing post and hammer it until locked.
[0039] On-site operation: Insert the railing post → rotate 90° to lock → unfold the wire rope and thread it → close the buckle → tighten the rigging.
[0040] Maintenance and replacement: Tap the side of the stop block to push out the screw, then you can remove the old block and replace it with the new one.
[0041] Working principle: This utility model discloses a marine movable railing that can be quickly disassembled and installed, suitable for protective areas requiring frequent disassembly and assembly, such as cargo holds in ship engine rooms and freeboard decks. The device includes a base with a rotating locking mechanism, modular railing posts, and AB-type movable railings. Tool-free fixing is achieved through a 90° rotational locking between the rectangular hole in the base and the stop block of the railing post. The top of the railing post features a threadable spiral eyelet for quick wire rope insertion and locking. The base is equipped with drainage channels and wear-resistant bushings to improve corrosion resistance. The stop block is designed as a pluggable module for easy replacement. This solution completely solves the problems of low disassembly and assembly efficiency and reliance on multiple operators in traditional bolt-type railings. Disassembly and assembly can be completed by a single person within 3 minutes. The heaviest component weighs no more than 4.8 kg, and it exhibits excellent resistance to ship vibration and a service life of over 10 years.
[0042] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.
Claims
1. A marine movable railing that can be quickly disassembled and installed, characterized in that: It includes four railing posts: three middle railing posts (1) and one end railing post (2), which are parallel to each other to form the four sides of a cube or cuboid; The intermediate railing post (1) includes a railing post body A (1.1), with an eye ring (1.2) at the top of the railing post body A (1.1) and two hanging rings A (1.3) in the middle of the railing post body A (1.1); a stop block A (1.4) is provided at the bottom of the railing post body A (1.1), and the stop block A (1.4) is set perpendicular to the railing post body A (1.1); The end railing post (2) includes a railing post body B (2.1), the top of which is provided with two upper hanging rings B (2.2); the middle of the railing post body B (2.1) is provided with two lower hanging rings B (2.3), the positions of the two lower hanging rings B (2.3) correspond one-to-one with the positions of the two upper hanging rings B (2.2); the bottom of the railing post body B (2.1) is provided with a stop block B (2.4), the stop block B (2.4) is set perpendicular to the railing post body B (2.1); The center line of the eye ring (1.2) is on the same horizontal plane as the center line of the upper hanging ring B (2.2). The eye ring (1.2) is a spiral ring, which facilitates the passage of the upper steel wire rope (4.1). The two hanging rings A (1.3) of the railing post body A (1.1) face the adjacent railing posts respectively, that is, they face each other perpendicularly, which facilitates the passage of the lower steel wire rope (4.2). The end of the upper steel wire rope (4.1) is provided with a steel wire rope loop (6). One end of the upper steel wire rope (4.1) starts from one of the upper hanging rings B (2.2) of the end railing post (2), passes through the eye rings (1.2) of the three intermediate railing posts (1), and then the steel wire rope loop (6) is connected and fixed to the other upper hanging ring B (2.2) of the end railing post (2) through the rigging screw buckle (5). Thus, the upper steel wire rope (4.1) forms a square. The hanging ring A (1.3) of the intermediate railing post (1) and the lower hanging ring B (2.3) of the end railing post (2) are on the same horizontal line. The lower wire rope (4.2) is provided with a wire rope collar (6) at the end. One end of the lower wire rope (4.2) starts from one of the lower hanging rings B (2.3) of the end railing post (2), passes through the hanging rings A (1.3) of the three intermediate railing posts (1), and then the wire rope collar (6) is connected and fixed to the other lower hanging ring B (2.3) of the end railing post (2) through the rigging screw buckle (5). Thus, the lower wire rope (4.2) forms a square and is arranged vertically parallel to the upper wire rope (4.1). The bottom of the middle railing post (1) and the end railing post (2) are movably inserted into the movable railing base (3); the movable railing base (3) includes an upper seat plate (3.1), a lower seat plate (3.2) and a pad plate (3.3). The upper seat plate (3.1) and the lower seat plate (3.2) are two-layer slotted structures. The top plate of the upper seat plate (3.1) and the lower seat plate (3.2) have the same and corresponding lock holes (3.4).
2. A marine movable railing that can be quickly disassembled and installed according to claim 1, characterized in that: The upper hanging rings B (2.2) are respectively oriented towards their adjacent railing posts, that is, they are oriented perpendicular to each other, which facilitates the fixing of the end of the upper steel wire rope (4.1); the lower hanging rings B (2.3) are respectively oriented towards their adjacent railing posts, which are oriented perpendicular to each other, which facilitates the fixing of the end of the lower steel wire rope (4.2).
3. A marine movable railing that can be quickly disassembled and installed according to claim 1, characterized in that: The upper seat plate (3.1) is in an inverted U-shape, including two side plates and a top plate connected to the side plates at both ends. The bottom ends of the side plates of the upper seat plate (3.1) are respectively set on the pad plate (3.3).
4. A marine movable railing that can be quickly disassembled and installed according to claim 3, characterized in that: The lower seat plate (3.2) is disposed between the upper seat plate (3.1) and the pad plate (3.3). The lower seat plate (3.2) is a horizontal plate. The two ends of the lower seat plate (3.2) are respectively connected to the inner walls of the two side plates of the upper seat plate (3.1). The lower seat plate (3.2) is arranged parallel to the top plate and the pad plate (3.3) of the upper seat plate (3.1).
5. A marine movable railing that can be quickly disassembled and installed according to claim 4, characterized in that: The lock hole (3.4) includes a circular hole and a rectangular hole that are connected. The lock holes (3.4) of the upper plate (3.1) and the lower plate (3.2) are formed in the same direction with a rectangular hole.
6. A marine movable railing that can be quickly disassembled and installed according to claim 5, characterized in that: The width of the stop block A (1.4) and the stop block B (2.4) is 10mm; the diameter of the round hole of the lock hole (3.4) is 44mm, and the width of the rectangular hole is 14mm.
7. A marine movable railing that can be quickly disassembled and installed according to claim 6, characterized in that: The inner wall of the rectangular hole of the lock hole (3.4) is provided with a stainless steel and polytetrafluoroethylene composite bushing, and the surfaces of the stop block A (1.4) and stop block B (2.4) are provided with a stainless steel core covered with a wear-resistant nylon layer to reduce the wear of the stop blocks.
8. A marine movable railing that can be quickly disassembled and installed according to claim 1, characterized in that: The stop blocks A (1.4) and B (2.4) at the bottom of the middle rail post (1) and the end rail post (2) are designed to be replaceable. The connection between the bottom of the middle rail post (1) and the stop block A (1.4) is designed as a dovetail groove plug-in type. The connection between the bottom of the end rail post (2) and the stop block B (2.4) is designed as a dovetail groove plug-in type.