Middle rail type constant-tension automatic capturing, retracting and releasing device and ship

Abstract

The utility model provides a middle rail type constant-tension automatic capturing, retracting and releasing device and a ship, and belongs to the field of ship equipment. The retracting and releasing device is applied to a ship and comprises a sliding rail assembly, a capturing assembly, a stern door plate assembly, a traction assembly and a hook assembly. The capturing assembly comprises a capturing frame and a stopping rod, the stopping rod is connected with the capturing frame, the capturing frame is movably connected with the sliding rail assembly, and the moving direction of the capturing frame is consistent with the length direction of the sliding rail assembly; the stern door plate assembly is located at the first end of the sliding rail assembly and can turn over relative to the sliding rail assembly, so that the stern door plate assembly shields or exposes the first end of the sliding rail assembly; the traction assembly is located at the second end of the sliding rail assembly and connected with the capturing assembly so as to drive the capturing assembly to move. The hook assembly is used for being mutually locked with the blocking rod. The small boat can be quickly and safely recycled.

Description

Technical Field

[0001] This disclosure pertains to the field of marine equipment, and specifically relates to an intermediate track-type constant tension automatic capture and release device and a ship. Background Technology

[0002] There exists a type of vessel that consists of a mother hull and small boats. The mother hull is capable of sailing on its own, while the small boats can either be moored at the stern of the mother hull and sail with it, or they can detach from the mother hull and sail independently, returning to the stern of the mother hull after completing their journey.

[0003] In related technologies, the launching and retrieval operations between the mother ship and the small boat are accomplished using ropes. During the retrieval of the small boat, the crew on the mother ship lowers a rope extended from the winch onto the small boat, and the crew on the small boat then hooks the rope onto the small boat. Finally, the winch retracts the rope, thus retrieving the small boat.

[0004] However, the recycling methods in these technologies are inefficient and pose certain safety risks during operation. Utility Model Content

[0005] This disclosure provides an intermediate-track constant-tension automatic capture and release device and a vessel, enabling the rapid and safe recovery of small boats. The technical solution is as follows:

[0006] In a first aspect, the present disclosure provides an intermediate track type constant tension automatic capture and deployment device for use in ships. The device includes a slide rail assembly, a capture assembly, a stern door assembly, a traction assembly, and a hook assembly.

[0007] The capture assembly includes a capture frame and a barrier bar, the barrier bar being connected to the capture frame, the capture frame being movably connected to the slide rail assembly, and the movement direction of the capture frame being consistent with the length direction of the slide rail assembly;

[0008] The stern door panel assembly is located at the first end of the slide rail assembly, and the stern door panel assembly is capable of flipping relative to the slide rail assembly so that the stern door panel assembly can cover or expose the first end of the slide rail assembly;

[0009] The traction component is located at the second end of the slide rail assembly, and the traction component is connected to the capture component to drive the capture component to move;

[0010] The hook assembly is used to interlock with the barrier bar.

[0011] In one implementation of this disclosure, the traction assembly includes a first fixed pulley, a take-up winch, and a tensioning winch;

[0012] The first fixed pulley is located at the first end of the slide rail assembly;

[0013] Both the take-up winch and the tension winch are located at the second end of the slide rail assembly. The rope extending from the take-up winch is connected to the capture frame, and the rope extending from the tension winch is wound around the first fixed pulley and connected to the capture frame.

[0014] In one implementation of this disclosure, the traction assembly further includes a second fixed pulley and a third fixed pulley;

[0015] Both the second fixed pulley and the third fixed pulley are located at the second end of the slide rail assembly, and the second fixed pulley is closer to the tensioning winch than the third fixed pulley;

[0016] The second fixed pulley is located on one side of the slide rail assembly along its length, while the first fixed pulley and the third fixed pulley are located on the other side of the slide rail assembly along its length.

[0017] The rope extending from the tensioning winch sequentially winds around the second fixed pulley, the third fixed pulley, and the first fixed pulley.

[0018] In one implementation of this disclosure, the connection point between the rope extending from the take-up winch and the capture assembly is located on the side of the capture assembly facing the take-up winch, and the connection point between the rope extending from the tension winch and the capture assembly is located on the side of the capture assembly facing the first fixed pulley.

[0019] In one implementation of this disclosure, the capturing component further includes a base and pulleys;

[0020] One side of the base is connected to the capture frame, and the other side of the base is connected to the pulley;

[0021] The pulley and the slide rail assembly are in rolling contact.

[0022] In one implementation of this disclosure, the capturing component further includes a first ear plate and a second ear plate;

[0023] The first ear plate is connected to the capture frame and faces the take-up and release winch, and the first ear plate is connected to the rope extending from the take-up and release winch;

[0024] The second ear plate is connected to the base and faces the first fixed pulley. The second ear plate is connected to the rope extending from the tensioning winch.

[0025] In one implementation of this disclosure, the stern door panel assembly includes a flap, a pad, and two guide frames;

[0026] The flap includes a first side and a second side, which are perpendicular to the length direction of the slide rail assembly. The flap is capable of flipping about the first side as an axis.

[0027] The pad is attached to one side of the flip plate;

[0028] The guide frame is connected to the second side of the flip plate, and the guide frame and the pad are located on the same side of the flip plate, with the two guide frames spaced apart from each other.

[0029] In one implementation of this disclosure, the guide frame includes a support and guide rollers;

[0030] The guide roller is connected to the first end of the bracket, and the second end of the bracket is connected to the flap.

[0031] In one implementation of this disclosure, the slide rail assembly includes a support rail and a plurality of support rollers;

[0032] The support rail and the plurality of support rollers are arranged at intervals, and the plurality of support rollers are arranged at intervals along the length of the support rail.

[0033] Secondly, embodiments of this disclosure provide a vessel, including a mother ship hull, small boats, and the launching and retrieving device described in the first aspect;

[0034] The stern of the mother ship has a retraction channel, the length direction of which is consistent with the length direction of the mother ship. The first end of the retraction channel is close to the bow of the mother ship, and the second end of the retraction channel is close to the stern of the mother ship. The second end of the retraction channel has an opening.

[0035] The slide rail assembly is located within the take-up and take-down channel, and the length direction of the slide rail assembly is consistent with the length direction of the take-up and take-down channel;

[0036] The traction assembly is connected to the deck of the mother ship and is located near the first end of the deployment and retraction channel;

[0037] The stern door panel assembly is hinged to the mother ship hull and is located at the opening of the retraction channel;

[0038] The hook assembly is connected to the bow of the small boat.

[0039] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0040] The intermediate-track constant-tension automatic capture and release device provided in this embodiment involves configuring a slide rail assembly, a traction assembly, and a stern gate assembly to the stern of the mother ship, and attaching a hook assembly to the bow of the small boat. During the retrieval of the small boat, the stern gate assembly is opened to expose the first end of the slide rail assembly. The small boat approaches the mother ship and travels along the length of the slide rail assembly toward the capture assembly until the hook assembly at the bow of the small boat interlocks with the arresting bar of the capture assembly. Then, the traction assembly pulls the capture assembly. Since the capture frame is movably connected to the slide rail assembly, it causes the arresting bar to move toward the bow of the mother ship, which in turn causes the arresting bar to move the small boat toward the bow of the mother ship until the small boat is in position. Finally, the stern gate assembly is closed to cover the slide rail assembly, completing the small boat retrieval operation.

[0041] In other words, during the recovery of the small boat, there is no need to deploy or lock ropes as described in related technologies, which effectively improves the efficiency and safety of small boat recovery and achieves rapid and safe recovery of the small boat. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a front view of the ship provided in the embodiments of this disclosure;

[0044] Figure 2 This is a front view of the capture component provided in an embodiment of this disclosure;

[0045] Figure 3 This is a schematic diagram of the small boat recovery process provided in an embodiment of this disclosure;

[0046] Figure 4 This is a schematic diagram of the small boat recovery process provided in an embodiment of this disclosure;

[0047] Figure 5 This is a schematic diagram of the small boat recovery process provided in an embodiment of this disclosure;

[0048] Figure 6 This is a front view of the retractable device provided in the embodiments of this disclosure;

[0049] Figure 7 This is a top view of the retractable device provided in the embodiments of this disclosure;

[0050] Figure 8 This is a right view of the capture component provided in the embodiments of this disclosure;

[0051] Figure 9 This is a top view of the ship provided in the embodiments of this disclosure.

[0052] The symbols in the diagram represent the following meanings:

[0053] 10. Slide rail assembly;

[0054] 110. Support rail; 120. Support roller;

[0055] 20. Capture component;

[0056] 210. Capture frame; 220. Barrier bar; 230. Base; 240. Pulley; 250. First ear plate; 260. Second ear plate;

[0057] 30. Stern door panel assembly;

[0058] 310. Flip plate; 320. Pad plate; 330. Guide frame; 331. Support; 332. Guide roller;

[0059] 40. Traction components;

[0060] 410. First fixed pulley; 420. Winding winch; 430. Tensioning winch; 440. Second fixed pulley; 450. Third fixed pulley;

[0061] 50. Hook assembly;

[0062] 100. Mother ship hull; 1100. Launching and recovering passage; 200. Small boat. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0064] Figure 1 This is a front view of a ship provided in an embodiment of the present disclosure. Because the mother ship hull 100 has a large volume, Figure 1 Only a portion of the mother ship hull, 100, is shown in the image. See also... Figure 1 In this embodiment, the vessel includes a mother hull 100, small boats 200, and a launching and retrieval device. The launching and retrieval device is a central track type constant tension automatic capture and launching device.

[0065] exist Figure 1 In the middle, the left side is the bow direction of the mother ship 100 and the small boat 200, and the right side is the stern direction of the mother ship 100 and the small boat 200.

[0066] The stern of the mother ship 100 has a launching and retraction channel 1100, the length of which is aligned with the length of the mother ship 100. The first end of the launching and retraction channel 1100 is near the bow of the mother ship 100, and the second end is near the stern of the mother ship 100. The second end of the launching and retraction channel 1100 has an opening. A portion of the launching and retraction device is located at the stern of the mother ship 100, and another portion is located at the bow of the small boat 200.

[0067] During the recovery of the small boat 200, the small boat 200 maintains the same speed as the mother ship 100, and then accelerates towards the opening of the launch and recovery channel 1100, so that the launch and recovery devices on the small boat 200 and the launch and recovery devices on the mother ship 100 are interlocked, thereby enabling docking between the small boat 200 and the mother ship 100, allowing the small boat 200 to be moored at the stern of the mother ship 100.

[0068] See you again Figure 1 In this embodiment, the retraction device includes a slide rail assembly 10, a capture assembly 20, a stern door panel assembly 30, a traction assembly 40, and a hook assembly 50.

[0069] Figure 2 To capture the front view of the component, Figure 2 perspective and Figure 1 The same perspective, combined Figure 2 In this embodiment, the capture assembly 20 includes a capture frame 210 and a barrier bar 220. The barrier bar 220 is connected to the capture frame 210. The capture frame 210 is movably connected to the slide rail assembly 10. The moving direction of the capture frame 210 is consistent with the length direction of the slide rail assembly 10.

[0070] See you again Figure 1 The stern door panel assembly 30 is located at the first end of the slide rail assembly 10. The stern door panel assembly 30 is rotatable relative to the slide rail assembly 10 to either cover or expose the first end of the slide rail assembly 10. The traction assembly 40 is located at the second end of the slide rail assembly 10 and is connected to the capture assembly 20 to drive the capture assembly 20 to move. The hook assembly 50 is used to interlock with the barrier bar 220.

[0071] Figures 3 to 5 This is a diagram illustrating the small boat recovery process, combined with... Figures 3 to 5 In the configuration process of the launching and retracting device provided in this embodiment, the slide rail assembly 10, the traction assembly 40, and the stern door panel assembly 30 are installed to the stern of the mother ship hull 100, and the hook assembly 50 is installed to the bow of the small boat 200 (see...). Figure 1During the recovery of the small boat 200, the stern door assembly 30 is opened to expose the first end of the slide rail assembly 10. The small boat 200 approaches the mother ship hull 100 and travels along the length of the slide rail assembly 10 toward the capture assembly 20 until the hook assembly 50 at the bow of the small boat 200 locks into the arresting bar 220 of the capture assembly 20 (see...). Figure 3 Then, the traction assembly 40 pulls the capture assembly 20. Since the capture frame 210 is movably connected to the slide rail assembly 10, the capture frame 210 causes the arresting bar 220 to move towards the bow of the mother ship hull 100, which in turn causes the arresting bar 220 to move the small boat 200 towards the bow of the mother ship hull 100 until the small boat 200 is in position (see...). Figure 4 Finally, close the stern door assembly 30 to block the slide rail assembly 10, completing the recovery operation of the small boat 200 (see...). Figure 5 ).

[0072] In other words, the process of recovering the small boat does not require the deployment and locking of ropes as in related technologies, which effectively improves the efficiency and safety of small boat recovery and achieves rapid and safe recovery of the small boat.

[0073] In this embodiment, the slide rail assembly 10 is located within the deployment / retraction channel 1100, and the length direction of the slide rail assembly 10 is consistent with the length direction of the deployment / retraction channel 1100. The traction assembly 40 is connected to the deck of the mother ship hull 100 and is located near the first end of the deployment / retraction channel 1100. The stern door panel assembly 30 is hinged to the mother ship hull 100 and is located at the opening of the deployment / retraction channel 1100. The hook assembly 50 is connected to the bow of the small boat 200.

[0074] As mentioned above, the launch and recovery device plays an important role in the rapid and safe recovery of the small boat 200. The launch and recovery device will be described below.

[0075] Figure 6 This is a front view of the take-up and take-down device. Figure 6 perspective and Figure 1 The perspective is the same, but the hook component 50 is omitted in the picture. Figure 6 In this embodiment, the traction assembly 40 includes a first fixed pulley 410, a take-up winch 420, and a tension winch 430. The first fixed pulley 410 is located at the first end of the slide rail assembly 10. The take-up winch 420 and the tension winch 430 are both located at the second end of the slide rail assembly 10. The rope extending from the take-up winch 420 is connected to the capture frame 210, and the rope extending from the tension winch 430 is wound around the first fixed pulley 410 and connected to the capture frame 210.

[0076] In the above implementation, the direction of the rope extending from the tension winch 430 can be changed by the action of the first fixed pulley 410, so that the rope can be connected to the capture assembly 20. In this way, the ropes extending from the release winch 420 and the ropes extending from the tension winch 430 can be connected to the capture assembly 20 respectively, thereby forming a closed loop.

[0077] The retraction winch 420 controls the direction of movement of the capture assembly 20 by extending or retracting the rope. When the retraction winch 420 extends the rope, the capture assembly 20 moves towards the stern. When the retraction winch 420 retracts the rope, the capture assembly 20 moves towards the bow. While the capture assembly 20 moves, the rope extended by the tension winch 430 remains taut, ensuring the stability of the capture assembly 20 during movement. It is easy to understand that while the tension winch 430 keeps its extended rope taut, it should not affect the normal driving of the capture assembly 20 by the retraction winch 420.

[0078] For example, both the take-up winch 420 and the tension winch 430 are constant tension winches, which can effectively ensure the driving stability of the take-up winch 420 and the tension winch 430 for the capture assembly 20.

[0079] In this embodiment, the connection point between the rope extending from the take-up winch 420 and the capture assembly 20 is located on the side of the capture assembly 20 facing the take-up winch 420, and the connection point between the rope extending from the tension winch 430 and the capture assembly 20 is located on the side of the capture assembly 20 facing the first fixed pulley 410.

[0080] In the above implementation, the connection point between the rope extending from the retracting winch 420 and the capture assembly 20 is located on the side of the capture assembly 20 facing the bow, and the connection point between the rope extending from the tensioning winch 430 and the capture assembly 20 is located on the side of the capture assembly 20 facing the stern. In this way, the rope extending from the retracting winch 420 can pull the capture assembly 20 towards the bow, and the rope extending from the tensioning winch 430 can pull the capture assembly 20 towards the stern, thus achieving the reciprocating movement of the capture assembly 20.

[0081] In this embodiment, the traction assembly further includes a second fixed pulley 440 and a third fixed pulley 450. Both the second fixed pulley 440 and the third fixed pulley 450 are located at the second end of the slide rail assembly 10, with the second fixed pulley 440 closer to the tensioning winch 430 than the third fixed pulley 450. The second fixed pulley 440 is located on one side of the slide rail assembly 10 along its length, while the first and third fixed pulleys 450 are located on the other side. The rope extending from the tensioning winch 430 sequentially winds around the second fixed pulley 440, the third fixed pulley 450, and the first fixed pulley 410.

[0082] In the above implementation, the second fixed pulley 440 and the third fixed pulley 450 are used to change the direction of the rope extending from the tensioning winch 430. The rope passes over the top of the second fixed pulley 440, allowing the second fixed pulley 440 to support the rope and prevent it from slumping after extending from the tensioning winch 430. The rope passes over the bottom of the third winch, allowing the third fixed pulley 450 to guide the rope from one side of the length rail assembly 10 along its length to the other side, that is, from the upper side of the rail assembly 10 to the lower side of the rail assembly 10. This allows the rope to extend below the rail assembly 10, preventing interference with the capturing component 20 located above the rail assembly 10.

[0083] Figure 7 This is a top view of the retraction device, combined with... Figure 7 In this embodiment, along the length of the slide rail assembly 10, the tensioning winch 430, the second fixed pulley 440, the third fixed pulley 450, and the first fixed pulley are arranged sequentially along the same straight line. This design allows the rope extending from the tensioning winch 430 to smoothly wind around the second fixed pulley 440, the third fixed pulley 450, and the first fixed pulley in sequence.

[0084] See you again Figure 2 In this embodiment, the capture assembly 20 also includes a base 230 and a pulley 240. One side of the base 230 is connected to the capture frame 210, and the other side of the base 230 is connected to the pulley 240. The pulley 240 rolls in cooperation with the slide rail assembly 10.

[0085] In the above implementation, the base 230 is located at the bottom of the capture frame 210, serving both to support the capture frame 210 and to provide a mounting base for the pulley 240. Under the action of the pulley 240, the capture assembly 20 and the slide rail assembly 10 are in a rolling engagement, effectively reducing the friction between them.

[0086] In this embodiment, Figure 8 To capture the right view of the component, combine Figure 8 In this embodiment, the capture assembly 20 further includes a first ear plate 250 and a second ear plate 260. The first ear plate 250 is connected to the capture frame 210 and faces the take-up winch 420, and is connected to a rope extending from the take-up winch 420. The second ear plate 260 is connected to the base 230 and faces the first fixed pulley, and is connected to a rope extending from the tension winch 430.

[0087] In the above implementation, the first ear plate 250 is used to connect with the rope extending from the take-up winch 420, and the second ear plate 260 is used to connect with the rope extending from the tension winch 430. Since the first ear plate 250 is located on the capture frame 210, and the second ear plate 260 is located on the base 230, the ropes extending from the take-up winch 420 and the ropes extending from the tension winch 430 can be staggered, preventing interference.

[0088] Figure 9 A top view of the ship, combined with Figure 9 In this embodiment, the stern panel assembly 30 includes a flap 310, a pad 320, and two guide frames 330. The flap 310 includes a first side and a second side facing each other, the first side and the second side being perpendicular to the length direction of the slide rail assembly 10, and the flap 310 is capable of flipping about the first side as an axis. The pad 320 is attached to one side of the flap 310. The guide frame 330 is connected to the second side of the flap 310, and the guide frame 330 and the pad 320 are located on the same side of the flap 310, with the two guide frames 330 spaced apart from each other.

[0089] In the above implementation, the first side of the flap 310 is mounted on the hull 100 and can be flipped relative to the hull 100. When the flap 310 is laid flat, the stern door assembly 30 is in the open state, exposing the slide rail assembly 10. When the flap 310 is erected, the stern door assembly 30 is in the closed state, covering the slide rail assembly 10. A pad 320 is disposed on one side of the flap 310. When the stern door assembly 30 is in the open state, the pad 320 is arranged upwards, providing support for the small boat 200 and preventing the small boat 200 from directly contacting the flap 310 and causing damage to the flap 310. A guide frame 330 is disposed on the second side of the flap 310, guiding the small boat 200 into the gap between the two guide frames 330.

[0090] For example, the pad 320 is a nylon sheet.

[0091] In this embodiment, the guide frame 330 includes a support 331 and a guide roller 332. The guide roller 332 is connected to the first end of the support 331, and the second end of the support 331 is connected to the flip plate 310.

[0092] In the above implementation, the bracket 331 is used to support the guide roller 332. The guide roller 332 and the small boat 200 roll together, so that the small boat 200 can be guided into the gap between the two guide rollers 332, thereby guiding the slide rail assembly 10.

[0093] See also Figure 9In this embodiment, the slide rail assembly 10 includes a support rail 110 and a plurality of support rollers 120. The support rail 110 and the plurality of support rollers 120 are arranged at intervals between each other, and the plurality of support rollers 120 are arranged at intervals along the length direction of the support rail 110.

[0094] In the above implementation, the pulleys 240 of the support track 110 and the capture component 20 roll in cooperation, serving to support the capture component 20. The support rollers 120 roll in cooperation with the small boat 200, serving to support the small boat 200.

[0095] For example, there are two support rails 110, which are parallel to each other and spaced apart. A plurality of support rollers 120 are located between the two support rails 110.

[0096] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships; when the absolute position of the described objects changes, the relative positional relationship may also change accordingly.

[0097] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A mid-track type constant tension automatic capture and release device, characterized in that, Applied to ships, the launching and retracting device includes a slide rail assembly (10), a capture assembly (20), a stern door assembly (30), a traction assembly (40), and a hook assembly (50); The capture assembly (20) includes a capture frame (210) and a barrier bar (220). The barrier bar (220) is connected to the capture frame (210). The capture frame (210) is movably connected to the slide rail assembly (10). The moving direction of the capture frame (210) is consistent with the length direction of the slide rail assembly (10). The stern door panel assembly (30) is located at the first end of the slide rail assembly (10), and the stern door panel assembly (30) is capable of flipping relative to the slide rail assembly (10) so that the stern door panel assembly (30) covers or exposes the first end of the slide rail assembly (10); The traction component (40) is located at the second end of the slide rail component (10), and the traction component (40) is connected to the capture component (20) to drive the capture component (20) to move; The hook assembly (50) is used to lock with the barrier bar (220).

2. The retracting device according to claim 1, characterized in that, The traction assembly (40) includes a first fixed pulley (410), a take-up winch (420), and a tensioning winch (430); The first fixed pulley (410) is located at the first end of the slide rail assembly (10); Both the take-up winch (420) and the tension winch (430) are located at the second end of the slide rail assembly (10). The rope extending from the take-up winch (420) is connected to the capture frame (210), and the rope extending from the tension winch (430) is wound around the first fixed pulley (410) and connected to the capture frame (210).

3. The retracting device according to claim 2, characterized in that, The traction assembly (40) further includes a second fixed pulley (440) and a third fixed pulley (450); The second fixed pulley (440) and the third fixed pulley (450) are both located at the second end of the slide rail assembly (10), and the second fixed pulley (440) is closer to the tensioning winch (430) than the third fixed pulley (450); The second fixed pulley (440) is located on one side of the slide rail assembly (10) along its length, and the first fixed pulley (410) and the third fixed pulley (450) are located on the other side of the slide rail assembly (10) along its length. The rope extending from the tensioning winch (430) is wound around the second fixed pulley (440), the third fixed pulley (450), and the first fixed pulley (410) in sequence.

4. The retracting device according to claim 2, characterized in that, The connection point between the rope extending from the take-up winch (420) and the capture assembly (20) is located on the side of the capture assembly (20) facing the take-up winch (420), and the connection point between the rope extending from the tension winch (430) and the capture assembly (20) is located on the side of the capture assembly (20) facing the first fixed pulley (410).

5. The retracting device according to claim 2, characterized in that, The capture assembly (20) also includes a base (230) and pulleys (240); One side of the base (230) is connected to the capture frame (210), and the other side of the base (230) is connected to the pulley (240); The pulley (240) rolls in conjunction with the slide rail assembly (10).

6. The retracting device according to claim 5, characterized in that, The capture assembly (20) further includes a first ear plate (250) and a second ear plate (260); The first ear plate (250) is connected to the capture frame (210) and faces the take-up winch (420). The first ear plate (250) is connected to the rope extending from the take-up winch (420). The second ear plate (260) is connected to the base (230) and faces the first fixed pulley. The second ear plate (260) is connected to the rope extending from the tensioning winch (430).

7. The retracting device according to claim 1, characterized in that, The stern door panel assembly (30) includes a flap (310), a pad (320), and two guide frames (330); The flap (310) includes a first side and a second side, which are perpendicular to the length direction of the slide rail assembly (10). The flap (310) is capable of flipping about the first side as an axis. The pad (320) is attached to one side of the flap (310); The guide frame (330) is connected to the second side of the flip plate (310), and the guide frame (330) and the pad (320) are located on the same side of the flip plate (310), with the two guide frames (330) spaced apart from each other.

8. The retracting device according to claim 7, characterized in that, The guide frame (330) includes a support (331) and a guide roller (332); The guide roller (332) is connected to the first end of the bracket (331), and the second end of the bracket (331) is connected to the flip plate (310).

9. The retracting device according to claim 1, characterized in that, The slide rail assembly (10) includes a support rail (110) and a plurality of support rollers (120); The support track (110) and the plurality of support rollers (120) are arranged at intervals to each other, and the plurality of support rollers (120) are arranged at intervals along the length direction of the support track (110).

10. A ship, characterized in that, Includes a mother ship hull (100), a small boat (200), and the launching and recovering device as described in any one of claims 1 to 9; The stern of the mother ship hull (100) has a retraction channel (1100), the length direction of the retraction channel (1100) is consistent with the length direction of the mother ship hull (100), the first end of the retraction channel (1100) is close to the bow of the mother ship hull (100), the second end of the retraction channel (1100) is close to the stern of the mother ship hull (100), and the second end of the retraction channel (1100) has an opening; The slide rail assembly (10) is located within the take-up and take-down channel (1100), and the length direction of the slide rail assembly (10) is consistent with the length direction of the take-up and take-down channel (1100). The traction assembly (40) is connected to the deck of the mother ship (100) and is close to the first end of the launching and retracting channel (1100); The stern door panel assembly (30) is hinged to the mother ship hull (100) and located at the opening of the retraction channel (1100); The hook assembly (50) is connected to the bow of the small boat (200).

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