A quick unmooring wharf ship unmooring hook

Abstract

The present application relates to the field of ship unhooking, in particular to a quick unhooking wharf ship unhooking hook, comprising a base and a winding machine, the winding machine is fixedly installed above the base, a guide rope is connected to the winding wheel of the winding machine, a baffle is installed on one side of the base, and three groups of fixing seats are installed in sequence on the side of the baffle away from the winding machine. The present application uses a pure mechanical trigger type unhooking mechanism, the structure design of the limiting cylinder diameter being larger than the guide cavity is used, the spring reset and the detour groove inclined surface extrusion are matched, the cable and the guide rope are automatically separated, the connection does not need to be disassembled at close range, the problems of difficult disassembly of heavy cable and hidden danger of operation safety are solved. At the same time, the motor drives the gear and rack transmission, drives the guide cylinder to move horizontally accurately, automatically compensates the deviation of the ship berthing angle, makes the cable and the anchor hook accurately aligned, does not need manual adjustment, significantly reduces the labor intensity, and comprehensively improves the automation level, efficiency and safety of the wharf mooring operation.

Description

Technical Field

[0001] This invention relates to the field of ship release hooks, and more specifically to a ship release hook for rapid release at docks. Background Technology

[0002] Ship release hooks, also known as quick release hooks, are specialized safety devices installed at docks for ship mooring, winch, and quick release of mooring lines. They are an upgraded replacement for traditional mooring bollards.

[0003] In patent application CN219059930U, published on 2023-05-23 and entitled "A Ship Release Hook for an Oil Terminal," this application discloses a ship release hook for an oil terminal, belonging to the technical field of ship release hooks. It includes a base plate and a fixed platform mounted on the base plate. A top plate is installed on the fixed platform, and a long rod is connected to the top plate via a pivot. A cable hook is mounted on the long rod, and a groove is formed on the long rod. A drive unit is provided on the long rod, and the drive unit is connected to an anti-detachment unit, which is connected to the cable hook. This utility model provides a ship release hook for an oil terminal that not only prevents the cable from detaching from the cable hook, but also allows for separation of the cable from the hook without pressing the anti-detachment rod.

[0004] In the aforementioned patents or prior art, the actual use of quick-release hooks for ships presents significant technical defects in the splicing of mooring lines. Because ship mooring lines are generally large in diameter and heavy, external traction devices must be used to pull the lines to the splicing position of the release hook via a traction cable. However, in the actual working conditions of ships berthing at docks, there is an unavoidable deviation in the berthing angle between the ship and the dock line, causing the axis of the mooring line to be unable to remain parallel to the designed force axis of the release hook during traction.

[0005] This axial angle causes the mooring line to be pulled near the release hook, resulting in a lateral offset between its end and the standard release hook engagement position. To complete the engagement, operators must manually adjust the line's position at close range to accurately align it with the release hook's opening. This process requires first disconnecting the traction cable from the mooring line before engaging the line with the release hook. However, due to the mooring line's immense weight, its ends experience significant downward force and rebound potential energy. This not only makes disassembling the traction cable from the mooring line extremely difficult and labor-intensive, but also poses a significant safety hazard to operators working at close range, exposing them to the risk of being struck, pinched, or entangled by the line, seriously threatening the safety and efficiency of dockside mooring operations.

[0006] Therefore, it is necessary to invent a quick-release dock hook for ships to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a quick-release dock hook for ships at the dock. By using a traction device that can automatically align laterally in conjunction with a purely mechanically triggered automatic release mechanism, it solves the problems in the prior art where cable splicing requires manual adjustment of the position, traction connection and disassembly are difficult, and close-range operation poses significant safety hazards.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a quick-release dock hook for ships, comprising a base and a rewinder, wherein the rewinder is fixedly installed above the base, a guide rope is connected to the rewinding wheel of the rewinder, a baffle is installed on one side of the base, and three sets of fixed seats are sequentially installed on the side of the baffle away from the rewinder, and an anchor hook is rotatably connected in each set of fixed seats. The baffle is equipped with a traction device, and the traction device can slide inside the baffle; The traction device is provided with a disengagement mechanism at one end. The disengagement mechanism includes a connecting cylinder and a limiting cylinder, with the limiting cylinder sleeved on the connecting cylinder and one side of the connecting cylinder fixedly connected to the end of the guide rope away from the winding machine. Each fixed seat is equipped with a limiting device inside. The limiting device includes: a rotating seat symmetrically installed on the inner wall of the fixed seat, and a retaining ring installed between the two sets of rotating seats, with the retaining ring fitting obliquely above one side of the anchor hook.

[0009] As a preferred embodiment of the present invention, the traction device disposed within the baffle includes: a through groove formed on the surface of the baffle, wherein limit grooves are symmetrically formed at the top and bottom inside the through groove.

[0010] As a preferred embodiment of the present invention, a guide cylinder is installed through the through groove, and rollers are symmetrically installed on the upper and lower parts of the guide cylinder, and the rollers fit into the corresponding limiting groove.

[0011] As a preferred embodiment of the present invention, guide wheels are symmetrically installed inside the guide cylinder, and the two sets of guide wheels are connected and fitted with the guide rope.

[0012] In a preferred embodiment of the present invention, a connecting seat is installed below the side of the guide cylinder near the winding machine, a motor is installed below the connecting seat, a gear is installed at the output end of the motor, and the gear is located between the connecting seat and the guide cylinder. A rack is installed on the side of the baffle near the connecting seat, and the rack meshes with the gear.

[0013] As a preferred embodiment of the present invention, a fixing frame is installed on the side of the baffle near the fixing seat, and the fixing frame is located above the fixing seat. A guide cavity is opened in the fixing frame, and the guide rope passes through and fits inside the guide cavity.

[0014] As a preferred embodiment of the present invention, the surface of the connecting cylinder is provided with a groove, and the diameter of the limiting cylinder is greater than the vertical height of the guide cavity.

[0015] As a preferred embodiment of the present invention, the surface of the limiting cylinder is provided with a meandering groove, and the opening of the meandering groove is in the same direction as the opening of the slot, and the upper part of the inner wall of the meandering groove can completely cover the opening of the slot.

[0016] As a preferred embodiment of the present invention, a limiting block is installed below the inner wall of the limiting cylinder, a limiting groove is formed below the surface of the connecting cylinder, a guide rod is installed in the limiting groove, and the guide rod is connected through the inside of the limiting block. A spring is sleeved on the guide rod, and the two ends of the spring are respectively attached to the inner wall of the limiting groove and the side of the limiting block near the meandering groove.

[0017] As a preferred embodiment of the present invention, rocker arms are installed diagonally below both sets of retaining rings, and an electric push rod is rotatably connected inside the fixed base, with the output end of the electric push rod rotatably connected to the rocker arm.

[0018] Compared with the prior art, the technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. By utilizing a structural design where the diameter of the limiting cylinder is larger than the vertical height of the guide cavity, the limiting cylinder is automatically triggered to slide backward relative to the connecting cylinder when the unhooking mechanism enters the guide cavity. Combined with the spring's reset action and the inclined surface compression of the meandering groove, this achieves automatic disengagement of the mooring cable and guide rope. This design completely eliminates the existing method of requiring operators to closely disassemble the connection between the traction cable and the guide rope, fundamentally solving the problem of disassembly difficulties caused by the immense weight of the cable. It completely eliminates the significant safety hazard of operators being injured by the cable's downward force and rebound potential energy during connection and disassembly, further improving the automation level and safety assurance capabilities of dock mooring operations. 2. Through the meshing transmission of a motor-driven gear and a fixed rack, the guide cylinder moves precisely within the track formed by the through groove and the limiting slide groove. This automatically compensates for any angular deviation between the ship and the dock line when berthing, ensuring that the axis of the guide rope is perfectly parallel to the designed force axis of the target anchor hook. This completely solves the problem of inaccurate attachment position caused by cable axis misalignment in existing technologies. The entire alignment process is fully automated, eliminating the need for operators to manually adjust the position of the heavy mooring lines at close range. This significantly reduces the labor intensity of the operation and avoids the safety risks of being hit or pinched by the cables during manual adjustment, greatly improving the efficiency and safety of mooring and attachment operations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the anchor hook structure of the present invention; Figure 3 This is a schematic diagram of the connection structure between the limiting cylinder and the connecting cylinder of the present invention; Figure 4 This is a schematic diagram of the mating structure of the slot and the meandering groove of the present invention; Figure 5 This is a schematic diagram of the planed structure of the limiting cylinder and connecting cylinder of the present invention; Figure 6 This is a schematic diagram of the baffle structure of the present invention; Figure 7 This is a schematic diagram of the guide tube planing structure of the present invention; Figure 8 This is a schematic diagram of the winding mechanism of the present invention; Figure 9 This is a schematic diagram of the fixing frame structure of the present invention; Figure 10 This is a schematic diagram of the planing structure of the fixed seat of the present invention.

[0021] Explanation of reference numerals in the attached figures: 101. Base; 102. Winding machine; 103. Baffle; 104. Fixed seat; 105. Anchor hook; 106. Guide rope; 201. Electric push rod; 202. Rotating seat; 203. Retaining ring; 204. Rocker arm; 301. Through groove; 302. Limiting slide groove; 303. Guide cylinder; 304. Roller; 305. Guide wheel; 306. Connecting seat; 307. Motor; 308. Gear; 309. Rack; 310. Fixed frame; 311. Guide cavity; 401. Connecting cylinder; 402. Slot; 403. Limiting cylinder; 404. Detour groove; 405. Limiting block; 406. Limiting groove; 407. Guide rod; 408. Spring. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] This invention provides, for example Figure 1-10The diagram shows a quick-release dock hook for ships, including a base 101 and a rewinder 102. The rewinder 102 is fixedly installed above the base 101. A guide rope 106 is connected to the rewinding wheel of the rewinder 102. A baffle 103 is installed on one side of the base 101. Three sets of fixed seats 104 are installed in sequence on the side of the baffle 103 away from the rewinder 102. An anchor hook 105 is rotatably connected in each set of fixed seats 104. A traction device is provided inside the baffle 103, and the traction device can slide inside the baffle 103; One end of the traction device is provided with a disengagement mechanism, which includes a connecting cylinder 401 and a limiting cylinder 403. The limiting cylinder 403 is sleeved on the connecting cylinder 401, and one side of the connecting cylinder 401 is fixedly connected to the end of the guide rope 106 away from the winding machine 102. Each fixed seat 104 is equipped with a limiting device. The limiting device includes a rotating seat 202 symmetrically installed on the inner wall of the fixed seat 104, and a retaining ring 203 is installed between the two sets of rotating seats 202. The retaining ring 203 is attached to one side of the anchor hook 105 at an angle above.

[0024] The winding machine 102 winds up and unwinds the guide rope 106, providing a continuous and controllable power source for the traction of the mooring line. At the same time, the unhooking mechanism serves as the connection medium between the guide rope 106 and the mooring line, enabling rapid connection and automatic disengagement of the two. During this process, the traction device can automatically compensate for the angular deviation caused when the ship is docked, and the line position can be accurately aligned with the corresponding anchor hook 105 without manual adjustment. After the connection is completed, the limiting device provides a reliable mechanical lock for the anchor hook 105, ensuring that the anchor hook 105 will not accidentally flip and disengage due to fluctuations in line tension, wind and waves, or ship swaying during the mooring process.

[0025] Furthermore, in the above structure, the traction device disposed in the baffle 103 includes: a through groove 301 formed on the surface of the baffle 103, and a limit groove 302 symmetrically formed inside the through groove 301.

[0026] The through groove 301 and the upper and lower symmetrical limiting slide grooves 302 together form a dedicated moving track for the traction device, which provides precise linear guidance for the lateral movement of the guide cylinder 303, effectively preventing the guide cylinder 303 from shifting or jamming during movement, and ensuring the movement accuracy and stability of the traction device.

[0027] Furthermore, in the above structure, a guide cylinder 303 is installed through the through groove 301, and rollers 304 are symmetrically installed on the upper and lower parts of the guide cylinder 303, and the rollers 304 are in contact with the corresponding limiting grooves 302.

[0028] By having the rollers 304, which are symmetrically installed on the upper and lower sides, fit against the inner wall of the limiting groove 302, the sliding friction between the guide cylinder 303 and the baffle 103 is converted into rolling friction, which greatly reduces the moving resistance of the traction device, improves the smoothness of movement and response speed, and reduces the energy consumption of the motor 307.

[0029] Furthermore, in the above structure, guide wheels 305 are symmetrically installed inside the guide cylinder 303, and the two sets of guide wheels 305 are connected and fitted with the guide rope 106.

[0030] The guide wheels 305, which are symmetrically installed inside the guide cylinder 303, provide rolling support and guidance for the guide rope 106. This effectively reduces bending wear and shaking of the guide rope 106 during traction, significantly extends the service life of the guide rope 106, and ensures that the guide rope 106 maintains a stable movement trajectory during traction.

[0031] Furthermore, in the above structure, a connecting seat 306 is installed below the side of the guide cylinder 303 near the winding machine 102, a motor 307 is installed below the connecting seat 306, a gear 308 is installed at the output end of the motor 307, and the gear 308 is located between the connecting seat 306 and the guide cylinder 303. A rack 309 is installed on the side of the baffle 103 near the connecting seat 306, and the rack 309 meshes with the gear 308.

[0032] The rotation of the gear 308, driven by the motor 307, is converted into the linear motion of the guide cylinder 303 through meshing with the fixed rack 309, thus achieving automated lateral adjustment of the traction device. This allows for precise control of the lateral position of the guide rope 106 according to the ship's berthing angle, ensuring accurate alignment of the cable with the corresponding anchor hook 105.

[0033] Furthermore, in the above structure, a fixing frame 310 is installed on the side of the baffle 103 near the fixing seat 104, and the fixing frame 310 is located above the fixing seat 104. A guide cavity 311 is opened in the fixing frame 310, and the guide cavity 311 is in close contact with the guide rope 106.

[0034] The guide cavity 311 further guides and limits the end of the guide rope 106, effectively eliminating the swing of the guide rope 106 when the traction cable approaches the anchor hook 105, ensuring that the guide rope 106 maintains a stable movement trajectory, thereby improving the accuracy and reliability of the cable splicing.

[0035] Furthermore, in the above structure, the surface of the connecting cylinder 401 is provided with a slot 402, and the diameter of the limiting cylinder 403 is greater than the vertical height of the guide cavity 311.

[0036] The slot 402 on the surface of the connecting cylinder 401 is used to quickly engage the mooring cable's coupling ring, achieving a convenient connection between the guide rope 106 and the cable, which is simple and efficient to operate. The diameter of the limiting cylinder 403 is larger than the vertical height of the guide cavity 311, so that when the winding machine 102 winds up the guide rope 106 and drives the unhooking mechanism into the guide cavity 311, the limiting cylinder 403 will be blocked by the front end face of the guide cavity 311, thus sliding backward relative to the connecting cylinder 401, providing the trigger condition for the subsequent automatic unhooking action.

[0037] Furthermore, in the above structure, the surface of the limiting cylinder 403 is provided with a meandering groove 404, and the opening of the meandering groove 404 is in the same direction as the opening of the slot 402, and the upper part of the inner wall of the meandering groove 404 can completely cover the opening of the slot 402.

[0038] The opening of the meandering groove 404 on the surface of the limiting cylinder 403 is aligned with the opening of the slot 402, facilitating the smooth sliding of the mooring cable end into the slot 402 for quick connection. During traction, the inner wall of the meandering groove 404 completely covers the opening of the slot 402, forming a physical barrier that effectively prevents the cable from accidentally slipping out of the slot 402 due to shaking or tension fluctuations, ensuring the reliability of the traction operation.

[0039] Furthermore, in the above structure, a limiting block 405 is installed on the lower part of the inner wall of the limiting cylinder 403, and a limiting groove 406 is opened on the lower part of the surface of the connecting cylinder 401. A guide rod 407 is installed in the limiting groove 406, and the guide rod 407 is internally connected to the limiting block 405. A spring 408 is sleeved on the guide rod 407, and the two ends of the spring 408 are respectively attached to the inner wall of the limiting groove 406 and the side of the limiting block 405 near the meandering groove 404.

[0040] The cooperation of the limiting block 405 with the limiting groove 406 and the guide rod 407 limits the maximum sliding stroke of the limiting cylinder 403, preventing it from falling off the connecting cylinder 401. In its natural state, the spring 408 pushes the limiting cylinder 403 forward, causing the inner wall of the meandering groove 404 to automatically cover the opening of the slot 402, thus automatically locking the cable. When the limiting cylinder 403 is blocked by the front end face of the guide cavity 311, the spring 408 is compressed, providing power for the automatic reset of the limiting cylinder 403 after disengagement. Simultaneously, the inclined surface on one side of the meandering groove 404 squeezes the cable stuck in the slot 402, causing the cable to move towards the locking point of the slot 402, ultimately completing the cable disengagement.

[0041] Furthermore, in the above structure, rocker arms 204 are installed diagonally below both sets of retaining rings 203, and an electric push rod 201 is rotatably connected inside the fixed base 104, with the output end of the electric push rod 201 rotatably connected to the rocker arm 204.

[0042] The extension and retraction motion of the electric push rod 201 is converted into the rotational motion of the retaining ring 203 by using the rocker arm 204 as a transmission component. The electric push rod 201 is rotatably connected inside the fixed base 104, and its output end is rotatably connected to the rocker arm 204. The rotation of the retaining ring 203 can be achieved by extending and retracting the electric push rod 201, thereby completing the locking and unlocking of the anchor hook 105.

[0043] like Figure 1-10 As shown, in the initial state of the device, the electric push rod 201 is in the extended state. The rocker arm 204 drives the retaining ring 203 to rotate around the rotating seat 202 to the locked position, ensuring that the retaining ring 203 is tightly fitted against one side of the anchor hook 105 at an angle above, restricting the anchor hook 105's degree of freedom of rotation and ensuring the anchor hook 105 remains stable during the hooking process. Simultaneously, the winding machine 102 releases the guide rope 106, allowing the unhooking mechanism to extend to a position at the edge of the dock for easy operation.

[0044] At the edge of the dock, the operator aligns the end loop of the ship's mooring line with the opening of the meandering groove 404 on the surface of the limiting cylinder 403, and pushes the line along the meandering groove 404 into the slot 402 on the surface of the connecting cylinder 401. At this time, the spring 408, in its natural state, pushes the limiting cylinder 403 forward through the limiting block 405, so that the inner wall of the meandering groove 404 completely covers the opening of the slot 402, forming a physical barrier and automatically locking the line to prevent it from accidentally coming off during subsequent towing.

[0045] At this time, the winding machine 102 starts and winds up the guide rope 106, which is then pulled towards the anchor hook 105 by the unhooking mechanism. During this process, based on the angular deviation between the ship and the quayline when it is docked, the control system starts the motor 307, which drives the gear 308 at the output end to rotate. This causes the guide cylinder 303 to move laterally within the through groove 301, thereby causing the guide rope 106 to move laterally synchronously with the guide cylinder 303. Ultimately, the axis of the guide rope 106 is made completely parallel to the designed force axis of the target anchor hook 105, achieving precise alignment between the cable and the anchor hook 105.

[0046] As the winding machine 102 continues to wind the guide rope 106, driving the unhooking mechanism into the guide cavity 311, the limiting cylinder 403, due to its diameter being larger than the vertical height of the guide cavity 311, is blocked by the front end of the guide cavity 311 and cannot move forward. Meanwhile, the connecting cylinder 401 continues to move forward under the tension of the guide rope 106, causing the limiting cylinder 403 to slide backward relative to the connecting cylinder 401. During this process, the limiting block 405 slides along the guide rod 407 and compresses the spring 408, gradually revealing the opening of the slot 402. When the slot 402 is fully exposed, the cable, under the pressure of the inclined surface on one side of the meandering groove 404, automatically disengages from the slot 402 and accurately falls into the locked anchor hook 105 below, completing the fully automated splicing operation.

[0047] When the vessel needs to quickly release the mooring line, the operator remotely sends a release command from the control room, controlling the electric push rod 201 of the corresponding anchor hook 105 to retract. The output end of the electric push rod 201 drives the rocker arm 204 to swing, which in turn drives the retaining ring 203 to rotate, causing the retaining ring 203 to move away from the upper part of the anchor hook 105, releasing the mechanical lock on the anchor hook 105. At this time, under the huge tension of the mooring line, the anchor hook 105 automatically rotates around the pivot of the fixed seat 104, and the line instantly falls off the anchor hook 105, completing the rapid release.

[0048] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A quick-release dock hook for ships, comprising a base (101) and a reel (102), wherein the reel (102) is fixedly mounted above the base (101), a guide rope (106) is connected to the reel of the reel (102), a baffle (103) is installed on one side of the base (101), and three sets of fixed seats (104) are sequentially installed on the side of the baffle (103) away from the reel (102), each set of fixed seats (104) having an anchor hook (105) rotatably connected inside, characterized in that: A traction device is provided inside the baffle (103), and the traction device can slide inside the baffle (103); The traction device is provided with a disengagement mechanism at one end. The disengagement mechanism includes a connecting tube (401) and a limiting tube (403). The limiting tube (403) is sleeved on the connecting tube (401), and one side of the connecting tube (401) is fixedly connected to the end of the guide rope (106) away from the winding machine (102). Each of the fixed seats (104) is provided with a limiting device. The limiting device includes a rotating seat (202) symmetrically installed on the inner wall of the fixed seat (104), a retaining ring (203) installed between the two sets of rotating seats (202), and the retaining ring (203) is attached to the upper side of the anchor hook (105).

2. The quick-release dock hook for ships according to claim 1, characterized in that: The traction device installed in the baffle (103) includes: a through groove (301) opened on the surface of the baffle (103), and a limit groove (302) symmetrically opened inside the through groove (301).

3. A quick-release dock hook for ships, as described in claim 2, characterized in that: A guide cylinder (303) is installed through the through groove (301), and rollers (304) are symmetrically installed on the upper and lower sides of the guide cylinder (303), and the rollers (304) fit into the corresponding limiting groove (302).

4. A quick-release dock hook for ships, as described in claim 3, characterized in that: The guide cylinder (303) is symmetrically equipped with guide wheels (305), and the two sets of guide wheels (305) are connected to the guide rope (106).

5. A quick-release dock hook for ships according to claim 4, characterized in that: A connecting seat (306) is installed below the side of the guide cylinder (303) near the winding machine (102). A motor (307) is installed below the connecting seat (306). A gear (308) is installed at the output end of the motor (307), and the gear (308) is located between the connecting seat (306) and the guide cylinder (303). A rack (309) is installed on the side of the baffle (103) near the connecting seat (306), and the rack (309) meshes with the gear (308).

6. A quick-release dock hook for ships, as described in claim 5, characterized in that: A fixing frame (310) is installed on the side of the baffle (103) near the fixing seat (104), and the fixing frame (310) is located above the fixing seat (104). A guide cavity (311) is opened in the fixing frame (310), and the guide rope (106) passes through and fits inside the guide cavity (311).

7. A quick-release dock hook for ships according to claim 1, characterized in that: The connecting cylinder (401) has a slot (402) on its surface, and the diameter of the limiting cylinder (403) is greater than the vertical height of the guide cavity (311).

8. A quick-release dock hook for ships according to claim 7, characterized in that: The surface of the limiting cylinder (403) is provided with a meandering groove (404), and the opening of the meandering groove (404) is in the same direction as the opening of the slot (402), and the upper part of the inner wall of the meandering groove (404) can completely cover the opening of the slot (402).

9. A quick-release dock hook for ships according to claim 8, characterized in that: A limiting block (405) is installed on the lower part of the inner wall of the limiting cylinder (403), and a limiting groove (406) is opened on the lower part of the surface of the connecting cylinder (401). A guide rod (407) is installed in the limiting groove (406), and the guide rod (407) is connected to the inside of the limiting block (405). A spring (408) is sleeved on the guide rod (407), and the two ends of the spring (408) are respectively attached to the inner wall of the limiting groove (406) and the side of the limiting block (405) near the meandering groove (404).

10. A quick-release dock hook for ships, as described in claim 1, characterized in that: Both sets of retaining rings (203) are equipped with rocker arms (204) at their lower sides. An electric push rod (201) is rotatably connected inside the fixed base (104), and the output end of the electric push rod (201) is rotatably connected to the rocker arm (204).

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