Constant-tension winch skiff retracting and releasing device and ship

Abstract

The utility model provides a constant-tension winch boat retracting and releasing device and a ship, and belongs to the field of ship equipment. The constant-tension winch skiff collecting and releasing device and the ship comprise a sliding rail assembly, a stopping assembly, a traction assembly and a hook assembly. The stopping assembly comprises a stopping frame and two tensioning winches, the stopping frame can move in the length direction of the sliding rail assembly, the two tensioning winches are located on the two opposite sides of the sliding rail assembly in the length direction correspondingly, and ropes extending out of the two tensioning winches are connected with the stopping frame; the traction assembly is connected with the blocking frame so as to drive the blocking frame to move in the length direction of the sliding rail assembly. The hook assembly is used for being mutually locked with the blocking frame. 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 a constant tension winch boat launching and launching device and a vessel. 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 a constant tension winch for launching and recovering small boats, as well as a vessel, enabling rapid and safe retrieval of the small boats. The technical solution is as follows:

[0006] In a first aspect, the present disclosure provides a constant tension winch boat launching and retrieving device for use on ships. The launching and retrieving device includes a slide rail assembly, an arresting assembly, a traction assembly, and a hook assembly.

[0007] The barrier assembly includes a barrier frame and two tensioning winches. The barrier frame is movable along the length of the slide rail assembly. The two tensioning winches are located on opposite sides of the slide rail assembly along its length. The ropes extending from the two tensioning winches are connected to the barrier frame.

[0008] The traction component is connected to the barrier frame to drive the barrier frame to move along the length direction of the slide rail assembly;

[0009] The hook assembly is used to interlock with the barrier frame.

[0010] In one implementation of this disclosure, the barrier frame is a triangular frame structure;

[0011] The first corner of the barrier frame is connected to a rope extending from one of the tensioning winches, the second corner of the barrier frame is connected to a rope extending from another tensioning winch, and the third corner of the barrier frame is connected to the traction assembly.

[0012] In one implementation of this disclosure, the blocking component further includes a first fixed pulley;

[0013] The first fixed pulley is located near the first end of the slide rail assembly;

[0014] The tensioning winch is located near the second end of the slide rail assembly, and the rope extending from the tensioning winch is wound around the first fixed pulley and connected to the barrier frame.

[0015] In one implementation of this disclosure, the blocking component further includes a second fixed pulley;

[0016] The second fixed pulley is located near the first end of the slide rail assembly;

[0017] The rope extending from the tensioning winch sequentially winds around the first fixed pulley and the second fixed pulley and connects to the barrier frame. The rope between the second fixed pulley and the barrier frame is parallel to the length direction of the slide rail assembly.

[0018] In one implementation of this disclosure, the blocking component further includes a wheel seat;

[0019] The first fixed pulley and the second fixed pulley are respectively connected to the wheel seat, and the first fixed pulley and the second fixed pulley are spaced apart from each other.

[0020] In one implementation of this disclosure, the traction assembly includes a take-up and extend winch;

[0021] The rope extending from the take-up winch is connected to the barrier frame, and the rope between the take-up winch and the barrier frame, and the rope between the second fixed pulley and the barrier frame are located on the same plane.

[0022] In one implementation of this disclosure, the traction assembly further includes a base;

[0023] The base is located near the second end of the slide rail assembly, and the base is connected to the take-up and release winch.

[0024] In one implementation of this disclosure, the constant tension winch boat launching and recovering device further includes a stern door assembly;

[0025] The stern door panel assembly is located near the first end of the slide rail assembly, and the stern door panel assembly is capable of flipping relative to the slide rail assembly to either cover or expose the first end of the slide rail assembly.

[0026] In one implementation of this disclosure, the stern door assembly includes a flap and two guide frames;

[0027] 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.

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

[0029] In a second aspect, embodiments of this disclosure provide a ship, including a mother ship hull, a small boat, and the constant tension winch small boat launching and recovering device described in the first aspect;

[0030] 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.

[0031] 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;

[0032] The two tensioning winches are respectively connected to the deck of the mother ship and are located on opposite sides of the launching and recovering channel.

[0033] 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;

[0034] The hook assembly is connected to the bow of the small boat.

[0035] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0036] The launching and recovering device provided in this embodiment involves installing a slide rail assembly, a barrier assembly, and a traction assembly to the stern of the mother ship, and installing a hook assembly to the bow of the small boat. During the recovery of the small boat, the small boat approaches the mother ship and travels along the length of the slide rail assembly towards the barrier frame until the hook assembly at the bow of the small boat abuts against and locks with the barrier frame. During this contact, both tension winches release ropes while maintaining rope tension to cushion the impact between the hook assembly and the barrier frame. Then, the traction assembly pulls the barrier frame, causing it to move the small boat towards the bow of the mother ship until the small boat is in position, completing the small boat recovery operation.

[0037] 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

[0038] 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.

[0039] Figure 1 This is a front view of the ship provided in the embodiments of this disclosure;

[0040] Figure 2 This is a top view of a ship provided in an embodiment of this disclosure;

[0041] Figure 3 This is a schematic diagram of the movement of the barrier frame provided in an embodiment of this disclosure.

[0042] The symbols in the diagram represent the following meanings:

[0043] 10. Slide rail assembly;

[0044] 20. Barrier components;

[0045] 210. Barrier frame; 220. Tensioning winch; 230. First fixed pulley; 240. Second fixed pulley; 250. Wheel seat;

[0046] 30. Stern door panel assembly;

[0047] 310. Flip plate; 330. Guide frame; 331. Support; 332. Guide roller;

[0048] 40. Traction components;

[0049] 410. Winding winch; 420. Base;

[0050] 50. Hook assembly;

[0051] 60. Control panel;

[0052] 70. Electrical control box;

[0053] 80. Hydraulic pump station;

[0054] 100. Mother ship hull; 1100. Launching and recovering passage; 200. Small boat. Detailed Implementation

[0055] 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.

[0056] 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 1Only 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, a small boat 200, and a constant tension winch for launching and retrieving the small boat.

[0057] exist Figure 1 In the middle, the left side is the stern direction of the mother ship 100 and the small boat 200, and the right side is the bow direction of the mother ship 100 and the small boat 200.

[0058] 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.

[0059] 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 part of the constant tension winch launch and recovery device on the small boat 200 and the part of the constant tension winch launch and recovery device 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.

[0060] See you again Figure 1 In this embodiment, the constant tension winch boat launching and recovering device includes a slide rail assembly 10, an arresting assembly 20, a traction assembly 40, and a hook assembly 50.

[0061] Figure 2 This is a top view of the ship. Figure 2 The number 200 for the small boat is omitted. (Combined) Figure 2 In this embodiment, the blocking assembly 20 includes a blocking frame 210 and two tensioning winches 220. The blocking frame is movable along the length of the slide rail assembly 10. The two tensioning winches 220 are located on opposite sides of the slide rail assembly 10 along its length, and the ropes extending from the two tensioning winches 220 are connected to the blocking frame. The traction assembly 40 is connected to the blocking frame 210 to drive the blocking frame 210 to move along the length of the slide rail assembly 10. The hook assembly 50 is used to interlock with the blocking frame 210.

[0062] The launching and recovering device provided in this embodiment involves installing the slide rail assembly 10, the arresting assembly 20, and the traction assembly 40 to the stern of the mother ship 100, and installing the hook assembly 50 to the bow of the small boat 200. During the recovery of the small boat 200, the small boat 200 approaches the mother ship 100 and travels along the length of the slide rail assembly 10 towards the arresting frame 210 until the hook assembly 50 at the bow of the small boat 200 abuts against and locks with the arresting frame 210. During this abutment, both tension winches 220 release ropes and maintain rope tension to buffer the impact force between the hook assembly 50 and the arresting frame 210. Then, the traction assembly 40 pulls the arresting frame 210, causing the arresting frame 210 to move the small boat 200 towards the bow of the mother ship 100 until the small boat 200 is in position, completing the recovery operation.

[0063] In other words, during the recovery of the small boat 200, there is no need for the deployment and locking ropes as in related technologies, which effectively improves the efficiency and safety of the recovery of the small boat 200 and achieves rapid and safe recovery of the small boat 200.

[0064] It is easy to understand that while the tensioning winch 220 keeps its extended rope taut, it should not affect the normal drive of the traction assembly 40 to the barrier frame 210.

[0065] For example, both tensioning winches 220 are constant tension winches, which can effectively ensure that the tensioning winches 220 apply a stable tension force.

[0066] In this embodiment, the slide rail assembly 10 is located within the take-up and release channel 1100, and the length direction of the slide rail assembly 10 is consistent with the length direction of the take-up and release channel 1100. Two tensioning winches 220 are respectively connected to the deck and are located on opposite sides of the take-up and release channel 1100.

[0067] As mentioned above, the constant tension winch boat launching and recovering device plays an important role in the rapid and safe recovery of the boat 200. The constant tension winch boat launching and recovering device will be described below.

[0068] See also Figure 2 In this embodiment, the barrier frame 210 is a triangular frame structure. The first corner of the barrier frame 210 is connected to a rope extending from a tension winch 220, the second corner of the barrier frame 210 is connected to a rope extending from another tension winch 220, and the third triangle of the barrier frame 210 is connected to the traction assembly 40.

[0069] In the above implementation, connecting the three rope segments to the three corners of the barrier frame 210 respectively ensures that the three rope segments do not interfere with each other, effectively improving reliability. Furthermore, utilizing the relatively stable properties of a triangle, the stability of the barrier frame 210 is effectively enhanced.

[0070] See you again Figure 1 In this embodiment, the barrier assembly further includes a first fixed pulley 230. The first fixed pulley 230 is located near the first end of the slide rail assembly 10, and the tension winch 220 is located near the second end of the slide rail assembly 10. The rope extending from the tension winch 220 is wound around the first fixed pulley 230 and connected to the barrier frame 210.

[0071] In the above implementation, the first fixed pulley 230 serves to adjust the direction of the rope. The tensioning winch 220 is located near the second end of the slide rail assembly 10. The initial position of the blocking frame 210 is at the first end of the slide rail assembly 10, which facilitates docking with the hook assembly 50, and its movement direction is towards the second end of the slide rail assembly 10. Therefore, the first fixed pulley 230 is needed to change the direction of the rope extending from the tensioning winch 220, so that after extending towards the first end of the slide rail assembly 10, the rope then turns back towards the second end of the slide rail assembly 10.

[0072] For example, the first fixed pulley 230 and the tensioning winch 220 are located on the same plane, which is parallel to the horizontal plane.

[0073] This design facilitates the routing of the rope from the tensioning winch 220 to the first fixed pulley 230.

[0074] In this embodiment, the blocking assembly further includes a second fixed pulley 240. The second fixed pulley 240 is located near the first end of the slide rail assembly 10. The rope extending from the tension winch 220 is wound around the first fixed pulley 230 and the second fixed pulley 240 in sequence and connected to the blocking frame 210. The rope between the second fixed pulley 240 and the blocking frame 210 is parallel to the length direction of the slide rail assembly 10.

[0075] In the above implementation, the second fixed pulley 240 and the first fixed pulley 230 are adjacent. The rope extending from the first fixed pulley 230 is further wound around the second fixed pulley 240, thereby changing the position of the rope again, so that the rope between the second fixed pulley 240 and the barrier frame 210 is parallel to the length direction of the slide rail assembly 10. Since the moving direction of the barrier frame 210 is along the length direction of the slide rail assembly 10, this arrangement of the rope direction can facilitate its elongation as the barrier frame 210 moves, avoiding the inability of the tension force applied by the rope to effectively act on the barrier frame 210.

[0076] For example, the direction perpendicular to the horizontal plane is the vertical direction. The first fixed pulley 230 and the second fixed pulley 240 are arranged at intervals in the vertical direction, and the second fixed pulley 240 is located below the first fixed pulley 230.

[0077] In this way, the rope between the first fixed pulley 230 and the tensioning winch 220 can be staggered with the rope between the second fixed pulley 240 and the barrier frame 210, thus avoiding interference and entanglement between the two ropes.

[0078] In this embodiment, the blocking assembly also includes a wheel seat 250, a first fixed pulley 230 and a second fixed pulley 240 respectively connected to the wheel seat 250, and the first fixed pulley 230 and the second fixed pulley 240 are spaced apart from each other.

[0079] In the above implementation, the wheel seat 250 is connected to the deck of the mother ship hull 100. The wheel seat 250 can provide a stable mounting base for the first fixed pulley 230 and the second fixed pulley 240, so that the first fixed pulley 230 and the second fixed pulley 240 can stably wind the rope extended from the tension winch 220.

[0080] In this embodiment, the traction assembly 40 includes a take-up winch 410. The rope extending from the take-up winch 410 is connected to the barrier frame 210, and the rope between the take-up winch 410 and the barrier frame 210, as well as the rope between the second fixed pulley 240 and the barrier frame 210, are located on the same plane.

[0081] In the above implementation, the winding winch 410 drives the barrier frame 210 to move along the length of the slide rail assembly 10 by winding and unwinding the ropes. Furthermore, since the ropes between the winding winch 410 and the barrier frame 210, and the ropes between the second fixed pulley 240 and the barrier frame 210, are located on the same plane, the driving force applied by the winding winch 410 can effectively act on the barrier frame 210, causing it to move along the length of the slide rail assembly 10.

[0082] Figure 3 This is a schematic diagram illustrating the movement of the barrier frame, combined with... Figure 3 The initial position of the barrier frame 210 is close to the first end of the slide rail assembly 10. Driven by the retraction winch 410, the barrier frame 210 moves along the length of the slide rail assembly 10. During this process, the tension winch 220 keeps the extended rope taut, thereby ensuring the stability of the movement of the barrier frame 210.

[0083] See you again Figure 1 For example, the traction assembly 40 also includes a base 420. The base 420 is located near the second end of the slide rail assembly 10 and is connected to the take-up winch 410.

[0084] In the above implementation, the base 420 is connected to the deck of the mother ship. The take-up winch 410 is located on top of the base 420, thus enabling the base 420 to provide an installation foundation for the take-up winch 410. In addition, the base 420 can also elevate the take-up winch 410, so that the rope between the arresting frame 210 and the take-up winch 410 can be parallel to the slide rail assembly 10.

[0085] In this embodiment, the constant tension winch boat launching and recovering device further includes a stern door panel assembly 30. The stern door panel assembly 30 is located near the first end of the slide rail assembly 10, and the stern door panel assembly 30 can be flipped relative to the slide rail assembly 10 to either cover or expose the first end of the slide rail assembly 10.

[0086] In the above implementation, when the small boat 200 needs to be retracted or extended, the stern door panel assembly 30 opens, exposing the first end of the slide rail assembly 10, allowing the small boat 200 to enter and exit the slide rail assembly 10 normally. After the small boat 200 has been retracted or extended, the stern door panel assembly 30 closes, blocking the first end of the slide rail assembly 10, preventing the small boat 200 from entering or exiting the slide rail assembly 10, effectively improving the reliability of the small boat 200 when parked.

[0087] In this embodiment, the stern door panel assembly 30 includes a flap 310 and two guide frames 330. The flap 310 includes a first side and a second side opposite to each other. The first side and the second side are perpendicular to the length direction of the slide rail assembly 10. The flap 310 can be flipped about the first side as an axis. The guide frames 330 are connected to the second side of the flap 310, and the two guide frames 330 are spaced apart from each other.

[0088] 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. The guide frame 330 is disposed on the second side of the flap 310, which can guide the small boat 200 into the gap between the two guide frames 330, thereby guiding the small boat 200.

[0089] 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.

[0090] 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.

[0091] In this embodiment, the constant tension winch boat launching and recovering device also includes an operating platform 60, an electrical control box 70, and a hydraulic pump station 80. The operating platform 60 is connected to the deck and located near the launching and recovering winch 410. The operating platform 60 is used by the operator to control the opening or closing of the stern gate assembly 30, the extension or retraction of the ropes of the launching and recovering winch 410, and the extension or retraction of the ropes of the tensioning winch 220. The electrical control box 70 and the hydraulic pump station 80 are located within the cabin of the mother ship hull 100. The electrical control box 70 houses the electrical control devices, and the hydraulic pump station 80 provides hydraulic power.

[0092] 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.

[0093] 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 constant tension winch boat launching and recovering device, characterized in that, Applied to ships, the launching and retracting device includes a slide rail assembly (10), an arresting assembly (20), a traction assembly (40), and a hook assembly (50); The barrier assembly (20) includes a barrier frame (210) and two tensioning winches (220). The barrier frame (210) is movable along the length of the slide rail assembly (10). The two tensioning winches (220) are located on opposite sides of the length of the slide rail assembly (10). The ropes extending from the two tensioning winches (220) are connected to the barrier frame (210). The traction assembly (40) is connected to the barrier frame (210) to drive the barrier frame (210) to move along the length direction of the slide rail assembly (10); The hook assembly (50) is used to interlock with the barrier frame (210).

2. The constant tension winch boat launching and recovering device according to claim 1, characterized in that, The barrier frame (210) is a triangular frame structure; The first corner of the barrier frame (210) is connected to a rope extending from one of the tensioning winches (220), the second corner of the barrier frame (210) is connected to a rope extending from another tensioning winch (220), and the third corner of the barrier frame (210) is connected to the traction assembly (40).

3. The constant tension winch boat launching and recovering device according to claim 1, characterized in that, The blocking assembly (20) also includes a first fixed pulley (230); The first fixed pulley (230) is located near the first end of the slide rail assembly (10); The tensioning winch (220) is located near the second end of the slide rail assembly (10), and the rope extending from the tensioning winch (220) is wound around the first fixed pulley (230) and connected to the barrier frame (210).

4. The constant tension winch boat launching and recovering device according to claim 3, characterized in that, The blocking assembly (20) also includes a second fixed pulley (240); The second fixed pulley (240) is located near the first end of the slide rail assembly (10); The rope extending from the tensioning winch (220) successively winds around the first fixed pulley (230) and the second fixed pulley (240) and connects to the barrier frame (210). The rope between the second fixed pulley (240) and the barrier frame (210) is parallel to the length direction of the slide rail assembly (10).

5. The constant tension winch boat launching and recovering device according to claim 4, characterized in that, The blocking assembly (20) also includes a wheel seat (250); The first fixed pulley (230) and the second fixed pulley (240) are respectively connected to the wheel seat (250), and the first fixed pulley (230) and the second fixed pulley (240) are spaced apart from each other.

6. The constant tension winch boat launching and recovering device according to claim 4, characterized in that, The traction assembly (40) includes a take-up and release winch (410); The rope extending from the take-up winch (410) is connected to the barrier frame (210), and the rope between the take-up winch (410) and the barrier frame (210) and the rope between the second fixed pulley (240) and the barrier frame (210) are located on the same plane.

7. The constant tension winch boat launching and recovering device according to claim 6, characterized in that, The traction assembly (40) also includes a base (420); The base (420) is located near the second end of the slide rail assembly (10), and the base (420) is connected to the take-up and release winch (410).

8. The constant tension winch boat launching and recovering device according to claim 1, characterized in that, The constant tension winch boat launching and recovering device also includes a stern door panel assembly (30); The stern door panel assembly (30) is located near 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).

9. The retracting device according to claim 8, characterized in that, The stern door panel assembly (30) includes a flap (310) and two guide frames (330); The flap (310) includes a first side and a second side opposite to each other. The first side and the second side 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 guide frame (330) is connected to the second side of the flap (310), and the two guide frames (330) are spaced apart from each other.

10. A ship, characterized in that, Includes a mother ship hull (100), a small boat (200), and a constant tension winch small boat launching and launching 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 two tensioning winches (220) are respectively connected to the deck of the mother ship (100) and are located on opposite sides of the launching and recovering channel (1100); The traction assembly (40) is connected to the deck of the mother ship (100) and is located near the first end of the launching and retracting channel (1100); The hook assembly (50) is connected to the bow of the small boat (200).

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