A quick-release lifeboat rescue davit

Abstract

This utility model relates to the field of davit technology and discloses a quick-release davit for lifeboat rescue, including a davit support tower and a hull support frame installed on the side of the davit support tower. A lifting arm is hinged to the top end of the hull support frame. This utility model adjusts the angle of the hull support frame by operating a first lifting cylinder, and a second drive rod drives the mounting sleeve to move up and down at the rod of the lifting arm. This greatly increases the large-angle adjustment capability of the lifting arm and improves the hull lifting capacity. The extension and retraction of the lifting adjustment component drives the hull lifting frame to move up and down, making it suitable for lifting hulls of different sizes and models. It has good adaptability, excellent large-angle adjustment capability of the boom, and is suitable for lifting operations on different types of hulls. While having high load-bearing strength, the height of the davit is conveniently adjusted, making it widely applicable for hull lifting.

Description

Technical Field

[0001] This utility model relates to the field of davit technology, and in particular to a quick-release davit for lifeboat rescue. Background Technology

[0002] Quick-release lifeboats are emergency rescue equipment characterized by rapid disassembly and assembly. They are primarily used in emergency scenarios such as shipwrecks and maritime accidents to quickly transfer stranded personnel or transport rescue supplies. Their core advantage lies in their ability to separate and dock with the mother ship or rescue platform in a short time, improving emergency response efficiency. In actual rescue operations, a davit is a key supporting device for the hoisting, lifting, and transfer of quick-release lifeboats. It is typically fixedly installed on the mother ship deck, the fuselage of a rescue helicopter, or a shore-based rescue platform. During use, the davit is first precisely docked with the preset hoisting points of the quick-release lifeboat using slings, hooks, and other connectors. The lifeboat is then lifted from its storage location or from the water surface or other carrier. The davit's attitude is then adjusted according to the rescue needs to transfer the lifeboat to the target location (such as the mother ship deck or a safe area on shore). This successful hoisting operation ensures a smooth and efficient rescue process.

[0003] In existing technologies, although davits can achieve basic water surface lifting functions, that is, lifting lifeboats from the water surface into the davit for fixation or transfer, in actual lifting operations, the boom extension mechanism and angle adjustment structure of the davit are mostly designed with fixed stroke or limited adjustment range. The adjustment range of the lifting extension angle is narrow. When facing quick-release lifeboats of different lengths, it is impossible to flexibly adjust the height of the davit according to the actual size of the hull. The lack of convenience in height adjustment increases the difficulty of docking the slings with the lifeboat lifting points, and may even lead to inaccurate docking due to insufficient extension angle. In addition, the swing and angle adjustment of the boom are not good, and it is impossible to stably achieve large-amplitude swing lifting of the boom. The adaptability and ease of use are insufficient, and the lifting capacity for hulls of different sizes is not good enough. Therefore, we propose a quick-release lifeboat rescue davit to solve the above problems. Utility Model Content

[0004] In response to the problems raised, this utility model provides a quick-release davit for lifeboat rescue, thereby solving the aforementioned issues.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A quick-release lifeboat rescue davit includes a davit support tower and a hull support frame installed on the side of the davit support tower, wherein a lifting arm is hinged to the top end of the hull support frame. Both sides of the lifting arm are fitted with sliding mounting sleeves. The front and rear sides of the top of the hull support frame are respectively provided with first lifting cylinders that are hinged to the two mounting sleeves. The two rods of the lifting arm are fixedly installed with second drive rods that drive the displacement of the mounting sleeves. The lifting arm is provided with a hull lifting frame. The top of the lifting arm is fixedly installed with a lifting adjustment component that controls the lifting displacement of the hull lifting frame. The side of the hull support frame is provided with a manual step ladder.

[0006] Preferably, the side of the davit support tower is provided with a triangular reinforcing frame, the bottom of the triangular reinforcing frame is flush with the bottom of the davit support tower, the triangular reinforcing frame is located directly below the hull support frame, and the interior of the davit support tower is provided with a staircase for climbing.

[0007] Preferably, the hull support bracket is bolted to the top of the side of the davit support tower, and the bottom of the hull support bracket is provided with a bottom support leg, the bottom of which is flush with the bottom of the davit support tower.

[0008] Preferably, the lifting arm has triangular reinforcing frames on both the front and rear sides, and the lifting arm is hinged to the top of the hull support frame in an inverted U-shape. The triangular reinforcing frame has an auxiliary support column in the middle, and the two mounting bearing sleeves are respectively fitted and slidably attached to the front and rear sides of the lifting arm.

[0009] Preferably, both the first lifting cylinder and the second drive rod are hydraulic telescopic cylinders, the lifting arm is controlled by the first lifting cylinder to move in a fan shape, and the installation bearing sleeve is driven by the second drive rod to adjust its displacement.

[0010] Preferably, the two first lifting cylinders are symmetrically distributed on both sides of the hull support frame. The two ends of the first lifting cylinders are respectively hinged to the hull support frame and the mounting bearing sleeve. The mounting bearing sleeve is attached to and slides against the two sides of the lifting movable arm.

[0011] Preferably, the top of the hull lifting frame is provided with a triangular reinforcing seat, and the lifting adjustment component includes a top lifting component, a threaded adjusting rod, a steel rectangular frame, and a threaded support rod. The two top lifting components are symmetrically sleeved and fixed on the front and rear sides of the hull lifting frame. The two threaded adjusting rods are respectively fixedly installed at the bottom of the two top lifting components. The two threaded support rods are respectively fixedly installed on the front and rear sides of the top of the triangular reinforcing seat. The opposite side of the adjacent threaded adjusting rods and threaded support rods is threaded onto the inner side of the steel rectangular frame. The opposite side of the adjacent threaded adjusting rods and threaded support rods is provided with an anti-detachment fixing nut.

[0012] Preferably, the manual step ladder is installed at an angle on the front of the hull support frame, and the hull support frame and the manual step ladder are parallel and corresponding.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. This quick-release lifeboat rescue davit features an integrated davit support tower and hull support frame for stable placement and support. The hull can be placed and supported on the hull support frame. The first lifting cylinder is installed between the mounting support sleeve and the hull support frame. The two first lifting cylinders operate synchronously, pulling the mounting support sleeve and adjusting the angle of the hull support frame. The front and rear sides of the lifting boom are equipped with second drive rods, which can drive the two mounting support sleeves to move up and down at the rods of the lifting boom, facilitating the lifting operation of the hull on the water surface. This greatly increases the angle adjustment capability of the lifting boom, making it easy to adjust the boom at large angles. The device has excellent large angle adjustment capability and is suitable for lifting operations of different types of hulls, offering good ease of use.

[0014] 2. This quick-release lifeboat rescue davit features a hull lifting frame on its lifting arm. The top of the lifting arm has a lifting adjustment mechanism. The extension and retraction of this mechanism raises and lowers the hull lifting frame, making it suitable for suspending hulls of different sizes and models. It offers good adaptability. After the lifting arm completes the hull lifting operation, workers can step onto a manual ladder to adjust the hull on the support frame. The device is easy to use and operate, providing high load-bearing capacity while allowing for convenient height adjustment. Its hull lifting applications are wide-ranging. Attached Figure Description

[0015] Figure 1 This utility model provides a frontal perspective three-dimensional schematic diagram of a quick-release lifeboat rescue davit; Figure 2 This utility model provides a side perspective three-dimensional schematic diagram of a quick-release lifeboat rescue davit; Figure 3 This utility model provides a top-view perspective view of a quick-release lifeboat rescue davit. Figure 4 This is a side perspective three-dimensional schematic diagram of the connection structure between the steel rectangular frame and the threaded support rod of this utility model; Figure 5 This is a frontal perspective three-dimensional schematic diagram of the connection structure between the hoisting boom and the mounting load-bearing outer sleeve of this utility model.

[0016] In the diagram: 1. Davit support tower; 101. Triangular reinforcing frame; 102. Staircase; 2. Hull support frame; 201. Bottom support leg; 3. Lifting boom; 301. Triangular reinforcing frame; 302. Auxiliary support column; 4. Install load-bearing outer sleeve; 5. First lifting cylinder; 6. Second drive rod; 7. Hull lifting frame; 701. Triangular reinforcing seat; 8. Lifting adjustment component; 801. Top lifting component; 802. Threaded adjustment rod; 803. Steel rectangular frame; 804. Threaded support rod; 805. Anti-detachment fixing nut; 9. Manual step ladder. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Please see Figures 1-5 A quick-release lifeboat rescue davit includes a davit support tower 1 and a hull support frame 2 installed on the side of the davit support tower 1. A lifting arm 3 is hinged to the top end of the hull support frame 2. Both sides of the lifting boom 3 are fitted with sliding mounting sleeves 4. The front and rear sides of the top of the hull support frame 2 are respectively provided with first lifting cylinders 5, which are hinged to the two mounting sleeves 4. The two rods of the lifting boom 3 are fixedly installed with second driving rods 6, which drive the displacement of the mounting sleeves 4. The lifting boom 3 is provided with a hull lifting frame 7. The top of the lifting boom 3 is fixedly installed with a lifting adjustment component 8 that controls the lifting displacement of the hull lifting frame 7. The side of the hull support frame 2 is provided with a manual step ladder 9. The beneficial effects that this plan aims to achieve are: The davit support tower 1 and the hull support frame 2 are integrated and stably supported. The hull can be placed and supported on the hull support frame 2. The first lifting cylinder 5 is installed between the mounting support sleeve 4 and the hull support frame 2. The two first lifting cylinders 5 operate synchronously, which can pull the mounting support sleeve 4 and drive the hull support frame 2 to adjust the angle. The front and rear sides of the lifting boom 3 are equipped with second drive rods 6, which can drive the two mounting support sleeves 4 to move up and down at the rods of the lifting boom 3 respectively. This facilitates the lifting operation of the hull on the water surface and greatly increases the angle adjustment capability of the lifting boom 3, making it easy to adjust the boom at large angles. The lifting boom 3 is equipped with a hull lifting frame 7, and the top of the lifting boom 3 is equipped with a lifting adjustment component 8. The extension and retraction of the lifting adjustment component 8 drives the hull lifting frame 7 to move up and down. It is suitable for lifting hulls of different sizes and models, with good lifting adaptability. After the lifting boom 3 completes the hull lifting operation, the hull can be adjusted on the hull support frame 2 by stepping on the manual step ladder 9. It is convenient to use and operate, and the device has excellent large-angle adjustment capability of the boom. It is suitable for lifting operations of different models of hulls. At the same time, it has high load-bearing strength and convenient height adjustment of the lifting frame, making it widely applicable to hull lifting.

[0020] Furthermore, a triangular reinforcing frame 101 is provided on the side of the davit support tower 1. The bottom of the triangular reinforcing frame 101 is flush with the bottom of the davit support tower 1. The triangular reinforcing frame 101 is located directly below the hull support frame 2. A staircase 102 for climbing is provided inside the davit support tower 1. Specifically, the side of the davit support tower 1 is provided with a triangular reinforcing frame 101, which can support and lift the davit support tower 1, ensuring stable load bearing. The davit support tower 1 is also provided with an internal staircase 102, which allows users to climb onto the davit support tower 1, making it convenient to use and operate.

[0021] Furthermore, the hull support frame 2 is bolted to the top of the side of the davit support tower 1, and the bottom of the hull support frame 2 is provided with a bottom support leg 201, the bottom of the bottom support leg 201 being flush with the bottom of the davit support tower 1. Specifically, the hull support frame 2 is bolted to the top of the side of the davit support tower 1, which is stable and has high load-bearing strength. The bottom of the hull support frame 2 is provided with bottom support legs 201, which can be stably placed on the ground, and the overall frame is stable under the force of the installation.

[0022] Furthermore, triangular reinforcing frames 301 are provided on both the front and rear sides of the lifting boom 3. The lifting boom 3 is hinged in an inverted U-shape and installed on the side of the top of the hull support frame 2. An auxiliary support column 302 is provided in the middle of the triangular reinforcing frame 301. Two mounting bearing sleeves 4 are respectively fitted and slid on the front and rear sides of the lifting boom 3. Specifically, triangular reinforcing frames 301 are provided on both the front and rear sides of the lifting boom 3, and together with the auxiliary support column 302, they are installed in a triangular shape on the front and rear sides of the lifting boom 3, which increases the load-bearing strength of the lifting boom 3. In addition, the lifting boom 3 is installed in a U-shape, which can stably lift the hull and make the lifting operation stable.

[0023] Furthermore, both the first lifting cylinder 5 and the second drive rod 6 are hydraulic telescopic cylinders. The lifting movable arm 3 is controlled by the first lifting cylinder 5 to move in a fan shape, and the installation bearing sleeve 4 is driven by the second drive rod 6 to adjust its displacement. Specifically, both the first lifting cylinder 5 and the second drive rod 6 are hydraulic telescopic cylinders, which have high force resistance and high telescopic strength, making it easy to stably control the movement of the lifting boom 3, ensuring stable lifting of the hull. The lifting boom 3 is controlled by the first lifting cylinder 5 to move in a fan shape, facilitating stable lifting operations of the hull and making it convenient to use. The installation of the load-bearing outer sleeve 4 is driven by the second drive rod 6 to adjust its displacement, which improves the angle driving range of the boom and facilitates operation.

[0024] Furthermore, two first lifting cylinders 5 are symmetrically distributed on both sides of the hull support frame 2. The two ends of the first lifting cylinders 5 are respectively hinged to the hull support frame 2 and the mounting bearing sleeve 4. The mounting bearing sleeve 4 slides against the two sides of the lifting movable arm 3. Specifically, the first lifting cylinders 5 are symmetrically distributed on both sides of the hull support frame 2. The two first lifting cylinders 5 can push the mounting bearing sleeve 4 simultaneously, which facilitates the mounting bearing sleeve 4 to drive the lifting movable arm 3 to move and displace. It is convenient to use and operate. The mounting bearing sleeve 4 fits and slides against the two sides of the lifting movable arm 3, which is convenient for extension and retraction adjustment, not easy to tilt or deviate, and stable in operation.

[0025] Furthermore, the top of the hull lifting frame 7 is provided with a triangular reinforcing seat 701, and the lifting adjustment component 8 includes a top lifting component 801, a threaded adjusting rod 802, a steel rectangular frame 803, and a threaded support rod 804. The two top lifting components 801 are symmetrically sleeved and fixed on the front and rear sides of the hull lifting frame 7. The two threaded adjusting rods 802 are respectively fixedly installed at the bottom of the two top lifting components 801. The two threaded support rods 804 are respectively fixedly installed on the front and rear sides of the top of the triangular reinforcing seat 701. The opposite side of the adjacent threaded adjusting rods 802 and threaded support rods 804 is threaded on the inner side of the steel rectangular frame 803. The opposite side of the adjacent threaded adjusting rods 802 and threaded support rods 804 is provided with an anti-detachment fixing nut 805. Specifically, the top of the hull lifting frame 7 is provided with a triangular reinforcing seat 701, which provides load-bearing reinforcement for the hull lifting frame 7 and is convenient to use and operate. The top lifting component 801 can be sleeved and fixed to the top of the lifting movable arm 3. The threaded adjusting rod 802 is bolted and fixed to the bottom of the top lifting component 801, and the threaded support rod 804 is bolted and fixed to the top of the triangular reinforcing seat 701. The threaded adjusting rod 802 and the threaded support rod 804 are threaded on the inner side of the steel rectangular frame 803 on opposite sides. The steel rectangular frame 803 is used for installation and support. The threaded adjusting rod 802 and the threaded support rod 804 are bolted to the inside of the steel rectangular frame 803 by anti-detachment fixing nuts 805. When it is necessary to adjust the height by telescopic displacement, the distance between the threaded adjusting rod 802, the threaded support rod 804 and the steel rectangular frame 803 can be adjusted. This facilitates the adjustment of the lifting height of the hull lifting frame 7. The steel rectangular frame 803 has high rigidity and strength, good support and stress effect, and is convenient to use and has lifting control adjustment.

[0026] Furthermore, the manual step ladder 9 is installed at an angle on the front of the hull support frame 2, with the hull support frame 2 and the manual step ladder 9 being parallel and corresponding. Specifically, the manual step ladder 9 is installed at an angle on the front of the hull support frame 2, making it easy for people to stand on the manual step ladder 9. When the hull support is placed on the hull support frame 2, people can stand on the manual step ladder 9 to make work adjustments to the hull.

[0027] How to use and how to work this device: The davit 1 is equipped with a hull support tower 2 for installation and support. Lifeboats or other yachts can be placed on the inner side of the hull support tower 2 for easy storage after hoisting. The top side of the hull support tower 2 is equipped with a hoisting arm 3. The hoisting arm 3 has a sliding mounting sleeve 4 on both the front and rear sides. The first hoisting cylinder 5 is installed between the mounting sleeve 4 and the hull support tower 2. The two first hoisting cylinders 5 operate synchronously, which can pull the mounting sleeve 4 and thus drive the hull support tower 2 to adjust its angle, facilitating the hoisting operation of the hull on the water. The hoisting arm 3 has a second drive rod 6 on both the front and rear sides, which can drive the two mounting sleeves 4 to move up and down at the rod of the hoisting arm 3, greatly increasing the angle adjustment capability of the hoisting arm 3, facilitating large angle adjustment of the boom, and making it easy to hoist hulls of different lengths and models. It has good hoisting adaptability and ease of use. The lifting arm 3 is equipped with a hull lifting frame 7. The top of the lifting arm 3 is equipped with a lifting adjustment component 8, which can be extended and retracted to facilitate stable support for the hull lifting frame 7 on both sides of the top. When the hull lifting frame 7 is used for yacht lifting, the extension and retraction of the lifting adjustment component 8 can drive the hull lifting frame 7 to move up and down. It is suitable for lifting hulls of different sizes and models, with good lifting adaptability. After the hull lifting frame 7 is lifted, it is then lifted and moved to the hull support frame 2 by the lifting arm 3 to complete the hull lifting operation. The front of the hull support frame 2 is equipped with a manual step ladder 9, which can be stepped on by the user to adjust the hull on the hull support frame 2. It is convenient to use and operate, and it is easy to adjust the height of the lifting frame. The hull lifting has a wide range of applications and is convenient to use. The side of the davit support tower 1 is provided with a triangular reinforcing frame 101, which can support and lift the davit support tower 1, ensuring stable load bearing. The davit support tower 1 is also provided with an internal staircase 102, which allows users to climb onto the davit support tower 1, making it convenient to use and operate. The hull support frame 2 is bolted to the top of the side of the davit support tower 1, which is stable and has high load-bearing strength. The bottom of the hull support frame 2 is provided with bottom support legs 201, which can be stably placed on the ground, and the overall frame is stable under the force. The lifting boom 3 has triangular reinforcing frames 301 on both the front and rear sides, which, together with the auxiliary support column 302, are installed in a triangular shape on the front and rear sides of the lifting boom 3. This increases the load-bearing strength of the lifting boom 3. The lifting boom 3 is installed in a U-shape, which can stably lift the hull and ensure stable lifting. Both the first lifting cylinder 5 and the second drive rod 6 are hydraulic telescopic cylinders, which have high force resistance and high telescopic strength, making it easy to stably control the movement of the lifting boom 3, ensuring stable lifting of the hull. The lifting boom 3 is controlled by the first lifting cylinder 5 to move in a fan shape, facilitating stable lifting operations of the hull and making it convenient to use. The installation of the load-bearing outer sleeve 4 is driven by the second drive rod 6 to adjust its displacement, which improves the angle driving range of the boom and makes it easy to operate. The first lifting cylinder 5 is symmetrically distributed on both sides of the hull support frame 2. The two first lifting cylinders 5 can push the mounting bearing sleeve 4 simultaneously, which makes it easy for the mounting bearing sleeve 4 to drive the lifting movable arm 3 to move and displace. It is convenient to use and operate. The mounting bearing sleeve 4 fits and slides against the two sides of the lifting movable arm 3, which makes it easy to extend and adjust, not easy to tilt or deviate, and stable in operation. The top of the hull lifting frame 7 is equipped with a triangular reinforcing seat 701, which provides load-bearing reinforcement for the hull lifting frame 7 and is convenient to use and operate. The lifting adjustment component 8 includes a top lifting component 801, a threaded adjusting rod 802, a steel rectangular frame 803, and a threaded support rod 804. The top lifting component 801 can be sleeved and fixed to the top of the lifting movable arm 3. The threaded adjusting rod 802 is bolted and fixed to the bottom of the top lifting component 801, and the threaded support rod 804 is bolted and fixed to the top of the triangular reinforcing seat 701. The threaded adjusting rod 802 and the threaded support rod 804 are connected... One side of the threaded installation is installed on the inner side of the steel rectangular frame 803, and is supported and fixed by the steel rectangular frame 803. The threaded adjusting rod 802 and the threaded supporting rod 804 are bolted and fixed to the inner side of the steel rectangular frame 803 by the anti-disengagement fixing nut 805. When it is necessary to adjust the height by telescopic displacement, the distance between the threaded adjusting rod 802, the threaded supporting rod 804 and the steel rectangular frame 803 can be adjusted. This facilitates the adjustment of the lifting height of the hull lifting frame 7. The steel rectangular frame 803 has high rigidity and strength, good support and force-bearing effect, and is convenient to use and has lifting control adjustment. The manual step ladder 9 is installed at an angle on the front of the hull support frame 2, making it easy for people to stand on the manual step ladder 9. When the hull support is placed on the hull support frame 2, people can stand on the manual step ladder 9 to make work adjustments to the hull. The device has excellent large-angle adjustment capability of the boom, making it suitable for lifting operations on different types of hulls. It also has high load-bearing strength and convenient height adjustment, making it widely applicable for hull lifting.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A quick-release davit for lifeboat rescue, comprising a davit tower (1) and a hull cradle (2) mounted on the side of the davit tower (1), characterized in that: The top end of the hull support frame (2) is hinged with a lifting arm (3). The lifting arm (3) has a sliding mounting sleeve (4) on both sides of the rod. The hull support frame (2) has a first lifting cylinder (5) hinged to the two mounting sleeves (4) on the front and rear sides of the top. The two rods of the lifting arm (3) have a second driving rod (6) fixedly installed to drive the displacement of the mounting sleeve (4). The lifting arm (3) has a hull lifting frame (7). The top of the lifting arm (3) has a lifting adjustment component (8) for controlling the lifting displacement of the hull lifting frame (7). The side of the hull support frame (2) has a manual step ladder (9).

2. A davit according to claim 1, characterized in that: The side of the davit support tower (1) is provided with a triangular reinforcing frame (101), the bottom of the triangular reinforcing frame (101) is flush with the bottom of the davit support tower (1), the triangular reinforcing frame (101) is located directly below the hull support frame (2), and the interior of the davit support tower (1) is provided with a staircase (102).

3. The quick-release davit for lifeboat rescue according to claim 1, characterized in that: The hull support frame (2) is bolted to the top of the side of the davit support tower (1). The bottom of the hull support frame (2) is provided with a bottom support leg (201), and the bottom of the bottom support leg (201) is flush with the bottom of the davit support tower (1).

4. The davit according to claim 1, wherein: The hoisting arm (3) has triangular reinforcing frames (301) on both the front and rear sides. The hoisting arm (3) is hinged in an inverted U-shape on the side of the top of the hull support frame (2). The triangular reinforcing frame (301) has an auxiliary support column (302) in the middle. The two mounting bearing sleeves (4) are respectively fitted and slid on the front and rear sides of the hoisting arm (3).

5. The davit according to claim 1, wherein: The first lifting cylinder (5) and the second drive rod (6) are both hydraulic telescopic cylinders. The lifting movable arm (3) is controlled by the first lifting cylinder (5) to move in a fan shape. The installation bearing jacket (4) is driven by the second drive rod (6) to adjust its displacement.

6. A davit according to claim 1, characterized in that: Two first lifting cylinders (5) are symmetrically distributed on both sides of the hull support frame (2). The two ends of the first lifting cylinders (5) are respectively hinged to the hull support frame (2) and the mounting bearing sleeve (4). The mounting bearing sleeve (4) slides against the two sides of the lifting movable arm (3).

7. The davit according to claim 1, wherein: The top of the hull lifting frame (7) is provided with a triangular reinforcing seat (701). The lifting adjustment component (8) includes a top lifting component (801), a threaded adjusting rod (802), a steel rectangular frame (803), and a threaded support rod (804). The two top lifting components (801) are symmetrically sleeved and fixed on the front and rear sides of the hull lifting frame (7). The two threaded adjusting rods (802) are respectively fixedly installed at the bottom of the two top lifting components (801). The two threaded support rods (804) are respectively fixedly installed on the front and rear sides of the top of the triangular reinforcing seat (701). The opposite side of the adjacent threaded adjusting rods (802) and threaded support rods (804) is threaded on the inner side of the steel rectangular frame (803). The opposite side of the adjacent threaded adjusting rods (802) and threaded support rods (804) is provided with an anti-detachment fixing nut (805).

8. A quick-release davit for lifeboat rescue according to claim 1, characterized in that: The manual step ladder (9) is installed at an angle on the front of the hull support frame (2), and the hull support frame (2) and the manual step ladder (9) are parallel and corresponding.

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