Emergency release hook device for a mooring winch

Abstract

An emergency release hook device of a mooring winch, the root of the mooring hook is rotationally connected with a base, the head of the mooring hook is fixedly connected with the base through a triangular connecting rod and a straight connecting rod, the connecting rod mechanism drives the triangular connecting rod to rotate through a hydraulic cylinder, and then controls the mooring hook to switch between a mooring state and a release state, the first hinge point is the hinge joint between the triangular connecting rod and a vertical plate, the second hinge point is the hinge joint between the straight connecting rod and the triangular connecting rod, the third hinge point is the hinge joint between the straight connecting rod and the mooring hook, the three hinge points are located on the same straight line in the mooring state, and the straight line is perpendicular to the rope releasing direction of the release hook device, so that the triangular connecting rod and the straight connecting rod form a self-locking state, and the hydraulic cylinder only provides the power for unlocking and does not bear the tension of the mooring rope. The design not only can control the mooring hook to switch between the mooring state and the release state through the cooperation of the triangular connecting rod, the straight connecting rod and the hydraulic cylinder, but also can form a self-locking state through the triangular connecting rod and the straight connecting rod, thereby effectively improving the reliability of the mooring operation.

Description

Technical Field

[0001] This invention relates to a release hook device, and more particularly to an emergency release hook device for a mooring winch. Background Technology

[0002] Emergency release hook devices are important equipment in offshore operations. Their main function is to moor two pieces of equipment. The emergency release hook device is generally fixed to the main equipment, and the two pieces of equipment are connected by a mooring cable. One end of the mooring cable is fixed to the mooring hook of the emergency release hook device on the main equipment, and the other end is fixed to the second piece of equipment. Under normal working conditions, the release hook device can perform the mooring function. In case of abnormal emergencies and the two pieces of equipment need to be separated, the release hook device can automatically release the cable under operation, thus protecting the equipment. It is generally used in the mooring winch devices of offshore engineering equipment such as FPSOs and lifting platforms.

[0003] Currently, common emergency release hook devices use a release hook stop to limit the mooring line. When it is necessary to release the mooring line, the operator controls the movement of the release hook stop via a flexible shaft, causing the mooring line to detach from the emergency release hook device.

[0004] Although this device can secure the mooring cable and perform emergency release operations, it still has the following drawbacks:

[0005] 1. The direction of tension of the mooring cable is the same as the direction of movement of the release hook block, which causes the drive system to be directly subjected to the tension of the mooring cable, making it prone to damage and resulting in low safety.

[0006] 2. Because the drive system is directly subjected to the tension of the mooring cable, the resistance that needs to be overcome when releasing the mooring cable is large, resulting in low unlocking sensitivity.

[0007] The information disclosed in this background section is intended only to enhance understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of low reliability and poor unlocking sensitivity in the prior art, and to provide a mooring winch emergency release hook device with high reliability and high unlocking sensitivity.

[0009] To achieve the above objectives, the technical solution of the present invention is:

[0010] An emergency release hook device for a mooring winch, the emergency release hook device comprising: a main fixed base, a mooring hook, and a hydraulic self-locking system;

[0011] The main mounting base is a double-plate structure, consisting of two parallel support plates. The support plates are perpendicular to the deck and include an integral horizontal plate and a vertical plate. The vertical plate is vertically positioned at the end of the horizontal plate, and its position is aligned with the rope extension direction of the emergency release hook device. The mooring hook is positioned between the two support plates, with its root hinged to the far end of the horizontal plate. The hydraulic self-locking system is fixedly mounted on the vertical plate, and its power output is engaged with the mooring hook.

[0012] The horizontal board has a through groove that is oppositely arranged in the direction of the vertical board. One end of the through groove is located near the main pin shaft, and the other end of the through groove extends outside the horizontal board. The opening of the through groove is set in the direction of the rope outlet of the emergency release hook device. The middle part of the horizontal board is rotatably engaged with the root of the mooring hook.

[0013] The hydraulic self-locking system includes a hydraulic cylinder, a triangular connecting rod, and a straight connecting rod. The cylinder body of the hydraulic cylinder is hinged to the middle of the main fixed seat, the cylinder body of the hydraulic cylinder is hinged to the bottom of the upright plate, the telescopic rod of the hydraulic cylinder is hinged to the corner of the triangular connecting rod near the root of the mooring hook, the top corner of the triangular connecting rod is hinged to the top of the upright plate, the corner of the triangular connecting rod away from the root of the mooring hook is hinged to the top of the straight connecting rod, and the bottom of the straight connecting rod is hinged to the hook head of the mooring hook.

[0014] When the hydraulic cylinder stroke is at its shortest, the emergency release hook device is in a moored state. In the moored state, the hook head of the mooring hook closes the opening of the through groove, and the space enclosed by the hook head of the mooring hook and the through groove is the hooking area of ​​the mooring cable.

[0015] The hinge point between the triangular connecting rod and the upright plate is the first hinge point, the hinge point between the straight connecting rod and the triangular connecting rod is the second hinge point, and the hinge point between the straight connecting rod and the mooring hook is the third hinge point.

[0016] In the moored state, the first hinge point, the second hinge point, and the third hinge point are located on the same straight line, and the line segment formed by connecting the first hinge point, the second hinge point, and the third hinge point in the moored state is perpendicular to the deck.

[0017] The hydraulic self-locking system also includes safety pins. Safety pin holes are provided in the middle and on both sides of the triangular connecting rod. After the safety pins are inserted into each safety pin hole in sequence, they are engaged with the two horizontal plates for limiting.

[0018] The safety pin is a smooth bolt structure. The diameter of the bolt head of the safety pin is larger than the diameter of the safety pin hole. The bolt shank of the safety pin is overfitted to the safety pin hole. After the safety pin is inserted into each safety pin hole in sequence, it is fixedly connected to the nut. Two breaking grooves are opened in the middle of the safety pin. The breaking grooves are set near the triangular connecting rod.

[0019] The emergency release hook device includes two hydraulic cylinders, which are symmetrically arranged on the outside of the two horizontal plates;

[0020] The two ends of the straight connecting rod are respectively hinged to the triangular connecting rod and the mooring hook through a U-shaped fork structure. The mooring hook, the triangular connecting rod and the straight connecting rod are all set on the mid-section of the emergency release hook device.

[0021] A main pin is provided in the middle of the two horizontal plates, and the mooring hook is located between the two horizontal plates. The mooring hook is rotatably engaged with the horizontal plates through the main pin.

[0022] A copper bushing is fitted on the main pin shaft, and the main pin shaft is rotatably engaged with the mooring hook through the copper bushing.

[0023] The horizontal plate is embedded with an integral reinforcing block, which is an integral structure with the deck. The reinforcing block is positioned directly opposite the main pin. The reinforcing block has through holes that cooperate with the main pin. Both ends of the main pin pass through the reinforcing blocks on their corresponding sides and are then fixed to the reinforcing blocks.

[0024] The end of the through groove near the main pin has an arc-shaped structure.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. In the emergency release hook device for a mooring winch of the present invention, the root of the mooring hook is rotatably engaged with the main fixed seat, and the head of the mooring hook is driven to engage with the power output end of the hydraulic self-locking system. The hydraulic self-locking system drives the mooring hook to rotate, thereby switching between the moored state and the released state. Therefore, this design can control the switching of the mooring hook between the moored state and the released state through the hydraulic self-locking system.

[0027] 2. In the emergency release hook device for a mooring winch of the present invention, the hinge point between the triangular connecting rod and the vertical plate is the first hinge point, the hinge point between the straight connecting rod and the triangular connecting rod is the second hinge point, and the hinge point between the straight connecting rod and the mooring hook is the third hinge point. In the moored state, the three hinge points are located on the same straight line, and this straight line is perpendicular to the rope output direction of the release hook device, so that the triangular connecting rod and the straight connecting rod form a self-locking state. The hydraulic cylinder only provides the power for unlocking and does not bear the tension of the mooring cable. Therefore, this design can effectively improve the reliability of mooring operations by forming a self-locking state through the triangular connecting rod and the straight connecting rod.

[0028] 3. In the emergency release hook device for a mooring winch of the present invention, the telescopic rod of the hydraulic cylinder is angle-hinged with the triangular connecting rod near the root of the mooring hook. When the device needs to be unlocked, the hydraulic cylinder extends and pushes the triangular connecting rod to rotate, thereby causing the second hinge point to move closer to the root of the mooring hook, breaking the self-locking state of the triangular connecting rod and the straight connecting rod. Since the hydraulic cylinder only drives the triangular connecting rod to rotate and does not bear the tension of the mooring cable, the sensitivity of releasing the mooring cable is high. Therefore, this design can effectively improve the sensitivity of releasing the mooring cable by breaking the self-locking state of the triangular connecting rod and the straight connecting rod through the hydraulic cylinder.

[0029] 4. In the emergency release hook device for a mooring winch of this invention, the safety pin is a smooth bolt structure. The safety pin can fix the triangular connecting rod to the upright plate, preventing the safety pin from rotating and avoiding accidental unlocking. A breaking groove is opened in the middle of the safety pin. When the hydraulic cylinder extends until the thrust of the hydraulic cylinder exceeds the breaking force of the safety pin, the triangular connecting rod will cut the safety pin, allowing the system to unlock. Therefore, this design can prevent accidental unlocking of the emergency release hook device through the safety pin, effectively improving the safety of the emergency release hook device. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention.

[0031] Figure 2 yes Figure 1 A schematic diagram of the central connecting rod.

[0032] Figure 3 This is a side view of the present invention.

[0033] Figure 4 yes Figure 3 A schematic diagram of the structure along the AA direction.

[0034] Figure 5 yes Figure 3 A schematic diagram of the structure in the BB direction.

[0035] Figure 6 yes Figure 3 A schematic diagram of the CC-axis structure.

[0036] Figure 7 yes Figure 3 A schematic diagram of the structure in the DD direction.

[0037] Figure 8 yes Figure 3 A schematic diagram of the structure in the EE direction.

[0038] In the diagram: Main fixed seat 1, horizontal plate 11, main pin 12, vertical plate 13, through groove 14, mooring hook 2, hydraulic self-locking system 3, hydraulic cylinder 31, triangular connecting rod 32, straight connecting rod 33, safety pin 34, breaking groove 35, reinforcing insert 4, first hinge point 5, second hinge point 6, third hinge point 7. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] See Figures 1 to 8 An emergency release hook device for a mooring winch, the emergency release hook device comprising: a main fixed base 1, a mooring hook 2 and a hydraulic self-locking system 3;

[0041] The main fixing seat 1 is a double-plate structure, consisting of two parallel support plates. The support plates are perpendicular to the deck. Each support plate includes an integral horizontal plate 11 and a vertical plate 13. The vertical plate 13 is vertically positioned at the end of the horizontal plate 11. The vertical plate 13 of the support plate is positioned directly opposite the rope output direction of the emergency release hook device. The mooring hook 2 is positioned between the two support plates. The root of the mooring hook 2 is hinged to the far end of the horizontal plate 11. The hydraulic self-locking system 3 is fixedly mounted on the vertical plate 13. The power output end of the hydraulic self-locking system 3 is in transmission cooperation with the mooring hook 2.

[0042] The horizontal plate 11 is provided with a through groove 14 opposite to the vertical plate 13. One end of the through groove 14 is located near the main pin 12, and the other end of the through groove 14 extends outside the horizontal plate 11. The opening of the through groove 14 is located in the direction of the rope outlet of the emergency release hook device. The middle part of the horizontal plate 11 is rotatably engaged with the root of the mooring hook 2.

[0043] The hydraulic self-locking system 3 includes a hydraulic cylinder 31, a triangular connecting rod 32, and a straight connecting rod 33. The cylinder body of the hydraulic cylinder 31 is hinged to the middle of the main fixed seat 1. The cylinder body of the hydraulic cylinder 31 is hinged to the bottom of the upright plate 13. The telescopic rod of the hydraulic cylinder 31 is hinged to the corner of the triangular connecting rod 32 near the root of the mooring hook 2. The top corner of the triangular connecting rod 32 is hinged to the top of the upright plate 13. The corner of the triangular connecting rod 32 away from the root of the mooring hook 2 is hinged to the top of the straight connecting rod 33. The bottom of the straight connecting rod 33 is hinged to the hook head of the mooring hook 2.

[0044] When the hydraulic cylinder 31 has the shortest stroke, the emergency release hook device is in a moored state. In the moored state, the hook head of the mooring hook 2 closes the opening of the through groove 14. The space enclosed by the hook head of the mooring hook 2 and the through groove 14 in the moored state is the hooking area of ​​the mooring cable.

[0045] The first hinge point 5 is where the triangular connecting rod 32 is hinged to the vertical plate 13, the second hinge point 6 is where the straight connecting rod 33 is hinged to the triangular connecting rod 32, and the third hinge point 7 is where the straight connecting rod 33 is hinged to the mooring hook 2.

[0046] In the moored state, the first hinge point 5, the second hinge point 6, and the third hinge point 7 are located on the same straight line, and the line segment formed by connecting the first hinge point 5, the second hinge point 6, and the third hinge point 7 in the moored state is perpendicular to the deck.

[0047] The hydraulic self-locking system 3 also includes a safety pin 34. Safety pin holes are provided on the middle part and the two side upright plates 13 of the triangular connecting rod 32. The safety pin 34 is inserted into each safety pin hole in sequence and then engages with the two upright plates 13 for limiting.

[0048] The safety pin 34 is a smooth bolt structure. The diameter of the bolt head of the safety pin 34 is larger than the diameter of the safety pin hole. The bolt shank of the safety pin 34 is overfitted with the safety pin hole. After the safety pin 34 is inserted into each safety pin hole in sequence, it is fixedly connected with the nut. Two breaking grooves 35 are opened in the middle of the safety pin 34. The breaking grooves 35 are located near the triangular connecting rod 32.

[0049] The emergency release hook device includes two hydraulic cylinders 31, which are symmetrically arranged on the outside of the two horizontal plates 11.

[0050] The two ends of the straight connecting rod 33 are respectively hinged to the triangular connecting rod 32 and the mooring hook 2 through a U-shaped fork structure. The mooring hook 2, the triangular connecting rod 32 and the straight connecting rod 33 are all set on the mid-section of the emergency release hook device.

[0051] A main pin 12 is provided in the middle of the two horizontal plates 11, and the mooring hook 2 is provided between the two horizontal plates 11. The mooring hook 2 is rotatably engaged with the horizontal plates 11 through the main pin 12.

[0052] A copper bushing is fitted on the main pin 12, and the main pin 12 is rotatably engaged with the mooring hook 2 through the copper bushing.

[0053] The horizontal plate 11 is fitted with an integral reinforcing block 4, which is an integral structure with the deck. The reinforcing block 4 is positioned opposite the main pin 12. The reinforcing block 4 has through holes that cooperate with the main pin 12. Both ends of the main pin 12 pass through the reinforcing block 4 on their corresponding sides and are then fixed to the reinforcing block 4.

[0054] The end of the through groove 14 near the main pin 12 has an arc-shaped structure.

[0055] The principle of this invention is explained as follows:

[0056] In this design, the head of the mooring hook 2 is perpendicular to the arm of the mooring hook 2. The head of the mooring hook 2 closes the opening of the through groove 14, so that the mooring cable cannot be separated from the through groove 14 in the moored state, and the tension of the mooring cable is fully applied to the head of the mooring hook 2.

[0057] The main pin 12 can be a stress pin, thereby enabling the main pin 12 to monitor mooring tension.

[0058] Example 1:

[0059] An emergency release hook device for a mooring winch includes: a main fixed base 1, a mooring hook 2, and a hydraulic self-locking system 3. The main fixed base 1 is a double-plate structure, consisting of two parallel support plates perpendicular to the deck. Each support plate includes an integral horizontal plate 11 and a vertical plate 13, with the vertical plate 13 perpendicularly positioned at the end of the horizontal plate 11. The vertical plate 13 faces the rope output direction of the emergency release hook device. The mooring hook 2 is positioned between the two support plates, with its root hinged to the far end of the horizontal plate 11. The hydraulic self-locking system 3 is fixedly mounted on the vertical plate 13, and its power output is connected to the mooring hook 2. The horizontal plate 11 has a through groove 14 opposite to the vertical plate 13. One end of the through groove 14 is located near the main pin 12, and the other end extends outside the horizontal plate 11. The opening of the through groove 14 is directly opposite to the rope outlet direction of the emergency release hook device. The middle part of the horizontal plate 11 is rotatably engaged with the root of the mooring hook 2. The hydraulic self-locking system 3 includes a hydraulic cylinder 31, a triangular connecting rod 32, and a straight connecting rod 33. The cylinder body of the hydraulic cylinder 31 is hinged to the middle of the main fixed seat 1, and the cylinder body of the hydraulic cylinder 31 is hinged to the bottom of the vertical plate 13. The telescopic rod of the hydraulic cylinder 31 is angle-hung with the triangular connecting rod 32 near the root of the mooring hook 2. The top of the triangular connecting rod 32... The corner of the triangular link 32 is hinged to the top of the upright plate 13, and the corner of the triangular link 32 away from the root of the mooring hook 2 is hinged to the top of the straight link 33. The bottom of the straight link 33 is hinged to the hook head of the mooring hook 2. When the hydraulic cylinder 31 has its shortest stroke, the emergency release hook device is in the mooring state. In the mooring state, the hook head of the mooring hook 2 closes the opening of the through groove 14. In the mooring state, the space enclosed by the hook head of the mooring hook 2 and the through groove 14 is the hooking area of ​​the mooring cable. The hinge point between the triangular link 32 and the upright plate 13 is the first hinge point 5, the hinge point between the straight link 33 and the triangular link 32 is the second hinge point 6, and the hinge point between the straight link 33 and the mooring hook 2 is the third hinge point 7. In the mooring state, the first hinge point 5, the second hinge point 6, and the third hinge point 7 are... The three hinge points 7 are located on the same straight line. In the moored state, the line segment formed by connecting the first hinge point 5, the second hinge point 6, and the third hinge point 7 is perpendicular to the deck. The hydraulic self-locking system 3 also includes a safety pin 34. Safety pin holes are provided on the middle part of the triangular connecting rod 32 and on both sides of the upright plate 13. The safety pin 34 is inserted into each safety pin hole in sequence and then engages with the two horizontal plates 11 for limiting. The emergency release hook device includes two hydraulic cylinders 31. The two hydraulic cylinders 31 are symmetrically arranged on the outside of the two horizontal plates 11. The two ends of the straight connecting rod 33 are respectively hinged to the triangular connecting rod 32 and the mooring hook 2 through a U-shaped fork structure. The mooring hook 2, the triangular connecting rod 32, and the straight connecting rod 33 are all located on the mid-section of the emergency release hook device.A main pin 12 is provided at the middle of the two horizontal plates 11, and the mooring hook 2 is disposed between the two horizontal plates 11. The mooring hook 2 is rotatably engaged with the horizontal plates 11 via the main pin 12.

[0060] Example 2:

[0061] Example 2 is basically the same as Example 1, except that:

[0062] The safety pin 34 is a smooth bolt structure. The diameter of the bolt head of the safety pin 34 is larger than the diameter of the safety pin hole. The bolt shank of the safety pin 34 is overfitted with the safety pin hole. After the safety pin 34 is inserted into each safety pin hole in sequence, it is fixedly connected with the nut. Two breaking grooves 35 are opened in the middle of the safety pin 34. The breaking grooves 35 are located near the triangular connecting rod 32. A copper bushing is sleeved on the main pin shaft 12. The main pin shaft 12 is rotatably engaged with the mooring hook 2 through the copper bushing.

[0063] Example 3:

[0064] Example 3 is basically the same as Example 2, except that:

[0065] The horizontal plate 11 is fitted with an integral reinforcing block 4, which is integral with the deck. The reinforcing block 4 is positioned opposite the main pin 12. The reinforcing block 4 has a through hole that mates with the main pin 12. Both ends of the main pin 12 pass through the reinforcing block 4 on their corresponding sides and are fixed to the reinforcing block 4. The end of the through groove 14 near the main pin 12 has an arc-shaped structure.

[0066] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. An emergency release hook device for a mooring winch, characterized in that: The emergency release hook device includes: a main fixed base (1), a mooring hook (2), and a hydraulic self-locking system (3). The main fixing seat (1) is a double plate structure. The main fixing seat (1) consists of two parallel support plates. The support plates are set perpendicular to the deck. The support plate includes an integral horizontal plate (11) and a vertical plate (13). The vertical plate (13) is set perpendicularly at the end of the horizontal plate (11). The vertical plate (13) of the support plate is set facing the rope release direction of the emergency release hook device. A main pin (12) is set in the middle of the two horizontal plates (11). The mooring hook (2) is set between the two horizontal plates (11). The horizontal plate (11) has a through groove (14) arranged opposite to the vertical plate (13). One end of the through groove (14) is located near the main pin (12), and the other end of the through groove (14) extends outside the horizontal plate (11). The opening of the through groove (14) is set in the direction of the rope outlet of the emergency release hook device. The middle part of the horizontal plate (11) is rotatably engaged with the root of the mooring hook (2) through the main pin (12). The hydraulic self-locking system (3) includes a hydraulic cylinder (31), a triangular connecting rod (32), and a straight connecting rod (33). The cylinder body of the hydraulic cylinder (31) is hinged to the bottom of the vertical plate (13). The telescopic rod of the hydraulic cylinder (31) is hinged to the corner of the triangular connecting rod (32) near the root of the mooring hook (2). The top corner of the triangular connecting rod (32) is hinged to the top of the vertical plate (13). The corner of the triangular connecting rod (32) away from the root of the mooring hook (2) is hinged to the top of the straight connecting rod (33). The bottom of the straight connecting rod (33) is hinged to the hook head of the mooring hook (2). When the hydraulic cylinder (31) has the shortest stroke, the emergency release hook device is in a moored state. In the moored state, the hook head of the mooring hook (2) closes the opening of the through groove (14). In the moored state, the space enclosed by the hook head of the mooring hook (2) and the through groove (14) is the hook area of ​​the mooring cable.

2. The mooring winch emergency release hook device according to claim 1, characterized in that: The hinge point between the triangular link (32) and the upright plate (13) is the first hinge point (5), the hinge point between the straight link (33) and the triangular link (32) is the second hinge point (6), and the hinge point between the straight link (33) and the mooring hook (2) is the third hinge point (7). In the moored state, the first hinge point (5), the second hinge point (6), and the third hinge point (7) are located on the same straight line, and the line segment formed by connecting the first hinge point (5), the second hinge point (6), and the third hinge point (7) in the moored state is perpendicular to the deck.

3. The mooring winch emergency release hook device according to claim 2, characterized in that: The hydraulic self-locking system (3) also includes a safety pin (34). Safety pin holes are provided on the middle part and the two side upright plates (13) of the triangular connecting rod (32). The safety pin (34) is inserted into each safety pin hole in sequence and then engages with the two horizontal plates (11) for limiting.

4. The mooring winch emergency release hook device according to claim 3, characterized in that: The safety pin (34) is a smooth bolt structure. The diameter of the bolt head of the safety pin (34) is larger than the diameter of the safety pin hole. The bolt shank of the safety pin (34) is overfitted with the safety pin hole. The safety pin (34) is inserted into each safety pin hole in sequence and then fixedly connected with the nut. Two breaking grooves (35) are opened in the middle of the safety pin (34). The breaking grooves (35) are set near the triangular connecting rod (32).

5. A mooring winch emergency release hook device according to any one of claims 2 to 4, characterized in that: The emergency release hook device includes two hydraulic cylinders (31), which are symmetrically arranged on the outside of the two horizontal plates (11); The two ends of the straight connecting rod (33) are respectively hinged to the triangular connecting rod (32) and the mooring hook (2) through a U-shaped fork structure. The mooring hook (2), the triangular connecting rod (32) and the straight connecting rod (33) are all set on the mid-section of the emergency release hook device.

6. The mooring winch emergency release hook device according to claim 5, characterized in that: A copper bushing is fitted on the main pin (12), and the main pin (12) is rotatably engaged with the mooring hook (2) through the copper bushing.

7. The mooring winch emergency release hook device according to claim 6, characterized in that: The horizontal plate (11) is fitted with an integral reinforcing insert (4), which is integral with the deck. The reinforcing insert (4) is positioned opposite the main pin (12). The reinforcing insert (4) has a through hole that matches the main pin (12). Both ends of the main pin (12) pass through the reinforcing insert (4) on their corresponding sides and are then fixed to the reinforcing insert (4).

8. The mooring winch emergency release hook device according to claim 7, characterized in that: The end of the through groove (14) near the main pin (12) has an arc-shaped structure.

Images