A ship life buoy throwing device

Abstract

This utility model relates to the field of ship lifebuoy throwing technology, and in particular to a ship lifebuoy throwing device, including a receiving frame for holding a lifebuoy, the receiving frame being connected to one end of a lever; the end of the lever away from the receiving frame is connected to a weight frame containing a weight; the lever can be hinged to the ship's railing; the end of the lever near the weight frame is hinged to a bracket via a pin; the bracket can be mounted on the railing. Compared with the prior art, simply removing the pin allows the weight in the weight frame to use the lever principle to quickly lift the receiving frame, causing the lifebuoy to detach and perform a horizontal throwing motion, achieving rapid release and long-distance throwing, making operation extremely simple; this ship lifebuoy throwing device has a simple structure and is installed on the ship's railing, reducing the difficulty of installation and debugging.

Description

Technical Field

[0001] This utility model relates to the field of ship lifebuoy throwing technology, and in particular to a ship lifebuoy throwing device. Background Technology

[0002] During ship navigation, lifebuoys are crucial life-saving equipment and key tools for ensuring the safety of people who fall into the water. Traditional methods of throwing lifebuoys from ships mostly rely on manual throwing. This method is simple to operate and low in cost, but it has many limitations, such as limited throwing distance and poor accuracy. Especially in rough seas or when crew members are physically exhausted, it is difficult to quickly and accurately throw the lifebuoy near the person in the water, seriously affecting rescue efficiency. With the diversification of ship designs, vessels with recessed bridge decks are becoming increasingly common. These vessels optimize navigational visibility and structural layout by retracting the bridge deck inwards. This limits the space available for the installation of self-generating smoke signals and self-illuminating lights attached to lifebuoys on either side of the bridge. Furthermore, the presence of these additional devices significantly increases the overall weight of the lifebuoys, making them difficult to throw manually. To address this issue, existing technologies have developed lifebuoy throwing aids that use mechanical structures to assist in the throwing process, improving both the ease and distance of the throw. However, existing lifebuoy throwing aids still face many challenges when applied to vessels with recessed bridge decks. The increased weight due to the attached equipment makes existing devices complex to operate and difficult to install and debug, failing to meet the crew's needs for rapid and convenient throwing. Furthermore, existing devices cannot be flexibly adapted to different vessel sizes, making it difficult to guarantee efficient throwing on various types of vessels with recessed bridge decks. Therefore, there is an urgent need to design a lifebuoy throwing device specifically for vessels with recessed bridge decks to solve these problems. Utility Model Content To address the difficulties in manually throwing life rings onto ships with recessed decks and the complexity of existing throwing devices, this invention provides a ship life ring throwing device.

[0003] To solve the above problems, the technical solution adopted by this utility model is as follows: A ship lifebuoy throwing device includes a receiving frame for holding lifebuoys, the receiving frame being connected to one end of a lever; the end of the lever furthest from the receiving frame is connected to a weighted frame containing a weight; the lever can be hinged to the ship's railing; the end of the lever near the weighted frame is hinged to a bracket via a pin; the bracket can be mounted on the railing. In use, simply pulling out the pin allows the weight in the weighted frame to quickly lift the receiving frame using the lever principle, causing the lifebuoy to detach and undergo a projectile motion, achieving rapid release and long-distance throwing. The operation is extremely simple. This ship lifebuoy throwing device has a simple structure and is installed on the ship's railing, reducing installation and debugging difficulty. Furthermore, by adjusting parameters such as the lever length and weight of the weight, and based on the projectile motion calculation formula, it can be flexibly designed according to the dimensions of different ships, adapting to various types of ships with recessed bridge decks, greatly improving the efficiency and reliability of lifebuoy throwing and providing strong support for the rescue of people falling into the water.

[0004] Preferably, the lever includes a hinge rod one and a hinge rod two, both of which can be hinged to the guardrail; hinge rod one is connected to the load frame away from the hinge end; hinge rod two is connected to the receiving frame away from the hinge end; an extension rod is fixedly provided on hinge rod one at its hinge end; a transmission component is installed on the extension rod; the transmission component is used to transfer the potential energy of one end of the load frame to hinge rod two; the end of hinge rod one near the load frame is hinged to the bracket by a pin. When the pin is pulled out to release the weighted frame, the first hinge rod rotates under the weight of the object, efficiently transferring potential energy to the second hinge rod via a transmission mechanism. This causes the second hinge rod to quickly lift the container, enabling the lifebuoy to be thrown out rapidly. The entire process is simple to operate, requiring minimal effort from the crew. The transmission mechanism design ensures stable energy transfer, and combined with the lever principle, enables long-distance throwing of the lifebuoy, improving rescue efficiency. Furthermore, this device can be flexibly adapted to various vessels by adjusting parameters such as the hinge rod length, transmission mechanism position, and weight of the object, based on the actual size and usage requirements of different ships. It is easy to install and debug, effectively solving the problems of traditional devices being difficult to adapt to different vessels and having complex operation, providing reliable and efficient technical support for ship rescue operations.

[0005] Preferably, the support includes an L-shaped rod; one end of the L-shaped rod can be fixedly mounted on the guardrail; a reinforcing rib is provided at the included angle of the L-shaped rod; the end of the L-shaped rod away from the guardrail is hinged to a hinge rod one via a pin. The L-shaped rod being fixed to the guardrail forms a stable installation base, ensuring a tight connection between the entire throwing device and the ship, reducing swaying during operation; the reinforcing rib at its included angle further enhances the structural strength and stability of the support, enabling it to withstand the large forces generated by the falling weight and lever movement, ensuring the reliability of the throwing device under frequent use and harsh sea conditions; the hinged connection of the L-shaped rod away from the guardrail to the hinge rod one via a pin facilitates installation and disassembly, thereby enabling rapid and stable throwing of the lifebuoy.

[0006] Preferably, in the non-projectile state, the centerline of the hinge rod is set at an acute angle to the plane of the guardrail. This acute angle allows the hinge rod to rotate under the weight of the load frame, creating a more optimal lever arm angle. This fully utilizes the lever principle to efficiently convert the potential energy of the load into the kinetic energy for throwing the lifebuoy, achieving a longer throwing distance and higher speed. This angle design also allows for a more efficient layout of the throwing device components within the limited space of the ship's guardrail, reducing the space occupied by the device and facilitating installation and operation. Furthermore, the acute angle can be flexibly adjusted according to the specific structure and usage requirements of different ship guardrails, enhancing the device's adaptability to various ship types and ensuring good throwing performance on all types of vessels, greatly improving the efficiency and reliability of ship rescue operations.

[0007] Preferably, in the non-projectile state, the angle between the centerline of hinge rod one and the plane of the guardrail is 45°. From a mechanical point of view, the 45° angle allows hinge rod one to acquire sufficient potential energy when the heavy frame falls. When hinge rod one falls to a horizontal position, it uses a transmission component to transfer the potential energy to hinge rod two, and then the lifebuoy at the end of hinge rod two is thrown out.

[0008] Preferably, a support rod is mounted on the guardrail via a bracket; the second articulated rod is placed on the support rod; in the non-launching state, the centerline of the second articulated rod is perpendicular to the plane of the guardrail. The combination of the bracket and the support rod provides a stable support foundation for the second articulated rod, ensuring that the second articulated rod remains stable when the launching is not initiated, preventing the device from shifting or the lifebuoy from slipping due to the ship's rolling; when the first articulated rod falls to a horizontal position under the action of a weight, and the potential energy is transmitted through the transmission component, the second articulated rod, perpendicular to the plane of the guardrail, can rotate smoothly on the support rod, reducing friction and resistance during the movement, allowing the lifebuoy to be launched quickly and smoothly.

[0009] Preferably, the transmission component includes a sleeve; the sleeve is fitted onto the extension rod and fixed to the extension rod by bolts; a semi-circular ring plate is fixedly installed on the side wall of the sleeve. The sleeve is fixed to the extension rod by bolts, which not only facilitates flexible adjustment of the installation position according to actual needs to adapt to the throwing requirements of different ships, but also ensures a stable connection between the transmission component and the extension rod, reliably transmitting potential energy during the throwing process; the semi-circular ring plate optimizes the force transmission path, allowing the semi-circular ring plate to accurately contact and transmit power when the first hinged rod rotates, causing the second hinged rod to rise smoothly and quickly throw the lifebuoy, avoiding problems such as jamming and offset that are prone to occur in traditional transmission methods; this structural design also reduces the difficulty of installation and debugging of the device, enhances the reliability of the overall structure, and makes lifebuoy throwing more efficient and accurate, providing stable and effective technical support for ship rescue operations.

[0010] Preferably, the weight frame includes a shell with an open end; a cover plate is bolted to the open end of the shell; a circular tube is fixedly mounted on the side wall of the shell; the circular tube is fitted onto a hinged rod and fixed to the hinged rod with bolts. The open shell and removable cover plate design facilitates quick loading or replacement of weights by crew members, reducing the difficulty of daily maintenance and adjustment, and also allows for flexible adjustment of the weight according to different ship throwing requirements. The circular tube fixed to the side wall and fastened to the hinged rod with bolts ensures a tight connection between the weight frame and the hinged rod, stably transmitting gravitational potential energy during throwing and preventing swaying or loosening from affecting the throwing effect. This structural design also enhances the versatility of the weight frame, adapting to various sizes of hinged rods, simplifying the installation process, and significantly improving the practicality, reliability, and ease of operation of the ship's lifebuoy throwing device.

[0011] Preferably, the receiving frame includes a semi-circular arc plate; a side stop bar is provided on the semi-circular arc plate; a circular tube II is fixedly provided on the outer wall of one end of the semi-circular arc plate; the circular tube II is sleeved on the hinge rod II, and the circular tube II is fixed to the hinge rod II by bolts. The arc design of the semi-circular arc plate matches the shape of the lifebuoy, which can tightly wrap the lifebuoy and provide a stable placement space. The side stop bar further restricts the swaying of the lifebuoy and prevents it from accidentally slipping off during the ship's navigation or the preparation stage for throwing. The circular tube II is sleeved on the hinge rod II and fastened with bolts to ensure that the receiving frame and the hinge rod II are firmly connected. During the throwing process, power can be accurately transmitted, so that the lifebuoy can be smoothly released and thrown with an ideal trajectory. This structural design makes installation and disassembly convenient, allowing the crew to quickly change the lifebuoy or adjust the device parameters. At the same time, it enhances the adaptability of the receiving frame to lifebuoys of different sizes, improves the reliability and practicality of the ship's lifebuoy throwing device, and provides strong support for drowning rescue.

[0012] Preferably, an extension plate is fixedly installed at one end of the semi-circular plate away from the circular tube. The extension plate, together with the semi-circular plate and the side stop, forms a more stable limiting structure, firmly fixing the lifebuoy within the receiving frame and preventing the lifebuoy from shifting or falling off during ship pitching or the moment of launching. During the launching process, the extension plate can serve as a guiding auxiliary component, guiding the lifebuoy to be thrown in a predetermined direction, improving the accuracy and stability of the launching, and enabling the lifebuoy to land more precisely on the person in the water.

[0013] As can be seen from the above technical solutions, the advantages of this utility model include: In use, simply pulling out the pin allows the weight inside the weight box to be lifted quickly using the lever principle, causing the lifebuoy to detach and undergo a projectile motion, achieving rapid release and long-distance throwing, making operation extremely simple; the ship's lifebuoy throwing device has a simple structure and is installed on the ship's railing, reducing installation and debugging difficulty; at the same time, by adjusting parameters such as lever length and weight, and based on the projectile motion calculation formula, it can be flexibly designed according to the size of different ships, adapting to various types of ships with recessed bridge decks, greatly improving the efficiency and reliability of lifebuoy throwing, and providing strong support for the rescue of people who have fallen into the water. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is an exploded structural diagram of the hinge rod, the weight frame, and the transmission component of this utility model. Figure 4 This is a schematic diagram of the structure of the hinge rod 2 and the receiving frame of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1-accommodating frame, 2-lever, 3-weight frame, 4-guardrail, 5-pin, 6-bracket, 7-support, 8-support rod; 101-semi-circular plate, 102-side stop bar, 103-round tube two; 201-hinged rod one, 202-hinged rod two, 203-extension rod, 204-transmission component; 301-shell, 302-cover plate, 303-round tube one; 601-L-shaped rod, 602-reinforcing rib; 2041-sleeve, 2042-semi-circular ring plate. Detailed Implementation

[0017] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0018] like Figure 1 , Figure 2 As shown, a ship lifebuoy throwing device includes a receiving frame 1 for placing lifebuoys, and the receiving frame 1 is connected to one end of a lever 2; the end of the lever 2 away from the receiving frame 1 is connected to a weight frame 3 containing a weight; the lever 2 can be hinged to a ship railing 4; the end of the lever 2 near the weight frame 3 is hinged to a bracket 6 via a pin 5; the bracket 6 can be set on the railing 4.

[0019] In use, simply pull out the pin 5, and the weight in the weight box 3 will use the lever 2 principle to drive the receiving box 1 to rise quickly, causing the lifebuoy to detach and perform a projectile motion, achieving rapid release and long-distance throwing. The operation is extremely simple. This ship lifebuoy throwing device has a simple structure and is installed on the ship's railing 4, reducing the difficulty of installation and debugging. At the same time, by adjusting parameters such as the length of the lever 2 and the weight of the weight, and based on the projectile motion calculation formula, it can be flexibly designed according to the size of different ships, adapting to various types of ships with recessed bridge decks, greatly improving the efficiency and reliability of lifebuoy throwing, and providing strong support for the rescue of people who have fallen into the water.

[0020] The weight frame 3 includes a shell 301 with an opening at one end; a cover plate 302 is bolted to the open end of the shell 301; a circular tube 303 is fixedly installed on the side wall of the shell 301; the circular tube 303 is sleeved on the hinge rod 201 and fixed to the hinge rod 201 by bolts. The receiving frame 1 includes a semi-circular plate 101; a side stop bar 102 is provided on the semi-circular plate 101; a second circular tube 103 is fixedly installed on the outer wall of one end of the semi-circular plate 101; the second circular tube 103 is sleeved on the hinge rod 202 and fixed to the hinge rod 202 by bolts. An extension plate 104 is fixedly installed at the end of the semi-circular plate 101 away from the second circular tube 103.

[0021] The open-type shell 301 and the removable cover 302 design facilitate quick loading or replacement of heavy objects by the crew, reducing the difficulty of daily maintenance and adjustment. It also allows for flexible adjustment of the weight of the heavy objects according to the different throwing requirements of different ships. The round tube 303 fixed to the side wall is sleeved on the hinge rod 201 and fastened with bolts to ensure a tight connection between the heavy object frame 3 and the hinge rod 201. During the throwing process, it can stably transfer gravitational potential energy and avoid affecting the throwing effect due to shaking or loosening. This structural design also enhances the versatility of the heavy object frame 3, which can be adapted to various specifications of hinge rods 201, simplifying the installation process of the device and significantly improving the practicality, reliability and ease of operation of the ship life ring throwing device. The semi-circular plate 101's arc design matches the shape of the lifebuoy, tightly enclosing it and providing a stable placement space. The side baffle 102 further restricts the lifebuoy's swaying, preventing it from accidentally slipping off during ship navigation or preparation for throwing. The second round tube 103 is fitted onto the second hinge rod 202 and secured with bolts, ensuring a stable connection between the receiving frame 1 and the second hinge rod 202. During throwing, it can accurately transmit power, allowing the lifebuoy to detach smoothly and be thrown along an ideal trajectory. This structural design facilitates easy installation and disassembly, enabling crew members to quickly replace lifebuoys or adjust device parameters. It also enhances the adaptability of the receiving frame 1 to lifebuoys of different sizes, improving the reliability and practicality of the ship's lifebuoy throwing device and providing strong support for drowning rescue. The extension plate can work together with the semi-circular plate 101 and the side stop bar 102 to form a more stable limiting structure, which firmly fixes the life ring in the receiving frame 1, preventing the life ring from shifting or falling off when the ship is rocking or when the throwing is started. During the throwing process, the extension plate can serve as a guiding auxiliary component to guide the life ring to be thrown in a predetermined direction, improving the accuracy and stability of the throwing, so that the life ring can land more accurately on the person in the water.

[0022] like Figure 3 and Figure 4 As shown, lever 2 includes a hinge rod 201 and a hinge rod 202, both of which can be hinged to guardrail 4; hinge rod 201 is connected to the load frame 3 away from the hinge end; hinge rod 202 is connected to the receiving frame 1 away from the hinge end; an extension rod 203 is fixedly provided on hinge rod 201 at its hinge end; a transmission component 204 is installed on the extension rod 203; the transmission component 204 is used to transfer the potential energy of one end of the load frame 3 to hinge rod 202; the end of hinge rod 201 near the load frame 3 is hinged to bracket 6 by pin 5.

[0023] When the pin 5 is pulled out to release the weight frame 3, the first hinge rod 201 rotates under the weight of the object, efficiently transferring potential energy to the second hinge rod 202 via the transmission component 204. This causes the second hinge rod 202 to quickly lift the receiving frame 1, enabling the lifebuoy to be thrown out rapidly. The entire process is simple to operate, and the crew can complete the throwing without expending excessive physical effort. The design of the transmission component 204 ensures the stable transmission of potential energy. Combined with the lever principle 2, it enables long-distance throwing of the lifebuoy, improving rescue efficiency. At the same time, this device can be flexibly adapted to various ships by adjusting parameters such as the length of the hinge rod, the position of the transmission component 204, and the weight of the object, according to the actual size and usage requirements of different ships. It is easy to install and debug, effectively solving the problems of traditional devices being difficult to adapt to different ships and having complex operation, providing reliable and efficient technical support for ship rescue operations.

[0024] The support frame 6 includes an L-shaped rod 601; one end of the L-shaped rod 601 can be fixedly mounted on the guardrail 4; a reinforcing rib 602 is provided at the included angle of the L-shaped rod 601; the end of the L-shaped rod 601 away from the guardrail 4 is hinged to a hinge rod 201 via a pin 5. The L-shaped rod 601, fixed to the guardrail 4, forms a stable mounting base, ensuring a tight connection between the entire throwing device and the ship, reducing swaying during operation; the reinforcing rib 602 at the included angle further enhances the structural strength and stability of the support frame 6, enabling it to withstand the large forces generated by the falling weight frame 3 and the movement of the lever 2, ensuring the reliability of the throwing device under frequent use and harsh sea conditions; the hinged connection of the L-shaped rod 601 away from the guardrail 4 via a pin 5 facilitates installation and disassembly, thus enabling rapid and stable throwing of the lifebuoy. In the non-throwing state, the angle between the centerline of the hinge rod 201 and the plane of the guardrail 4 is 45°. The acute angle design allows the hinge rod 201 to form a more optimal lever arm angle when rotating under the gravity of the weight frame 3. This fully utilizes the lever principle to efficiently convert the potential energy of the weight into the kinetic energy for throwing the lifebuoy, achieving a longer throwing distance and higher speed. This angle design also allows for a more efficient layout of the throwing device components within the limited space of the ship's railing 4, reducing the device's footprint and facilitating installation and operation. Furthermore, the acute angle can be flexibly adjusted according to the specific structure and usage requirements of different ship railings 4, enhancing the device's adaptability to various ship types and ensuring good throwing performance on all types of vessels, greatly improving the efficiency and reliability of ship rescue operations. From a mechanical perspective, the 45° angle allows the hinge rod 201 to acquire sufficient potential energy when the weight frame 3 falls. When the hinge rod 201 reaches a horizontal position, it transfers this potential energy to the hinge rod 202 via the transmission component 204, then throws the lifebuoy from the end of the hinge rod 202.

[0025] In the above configuration, a support rod 8 is mounted on the guardrail 4 via a bracket 7; a second hinge rod 202 is placed on the support rod 8; in the non-projectile state, the center line of the second hinge rod 202 is perpendicular to the plane of the guardrail 4. The transmission component 204 includes a sleeve 2041; the sleeve 2041 is sleeved on the extension rod 203 and fixed to the extension rod 203 by bolts; a semi-circular ring plate 2042 is fixedly mounted on the side wall of the sleeve 2041. The combination of bracket 7 and support rod 8 provides a stable support foundation for articulated rod 202, ensuring that articulated rod 202 remains stable when not initiating the throwing operation, and preventing the device from shifting or the lifebuoy from slipping due to ship swaying. When articulated rod 201 falls to a horizontal position under the action of a weight and transmits potential energy through transmission component 204, articulated rod 202, which is perpendicular to the plane of guardrail 4, can rotate smoothly on support rod 8, reducing friction and resistance during the movement process, so that the lifebuoy can be thrown quickly and smoothly. The sleeve 2041 is fixed to the extension rod 203 with bolts, which not only facilitates flexible adjustment of the installation position according to actual needs to adapt to the throwing requirements of different ships, but also ensures a stable connection between the transmission component 204 and the extension rod 203, reliably transmitting potential energy during the throwing process. The semi-circular ring plate 2042 optimizes the force transmission path. When the first hinge rod 201 rotates, the semi-circular ring plate 2042 can accurately contact the second hinge rod 202 and transmit power, so that the second hinge rod 202 is raised smoothly, driving the lifebuoy to be thrown out quickly, avoiding the jamming and offset problems that are prone to occur in traditional transmission methods. This structural design also reduces the difficulty of installation and debugging of the device, enhances the reliability of the overall structure, and makes the lifebuoy throwing more efficient and accurate, providing stable and effective technical support for ship rescue operations.

[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ship lifebuoy throwing device, comprising a receiving frame (1), wherein the receiving frame (1) is used to hold lifebuoys, characterized in that, The receiving frame (1) is connected to one end of the lever (2); the end of the lever (2) away from the receiving frame (1) is connected to a weight frame (3) containing a weight; the lever (2) can be hinged to the ship railing (4); the end of the lever (2) near the weight frame (3) is hinged to the bracket (6) via a pin (5); the bracket (6) can be set on the railing (4).

2. The ship lifebuoy throwing device according to claim 1, characterized in that, The lever (2) includes a hinge rod one (201) and a hinge rod two (202) that can be hinged to the guardrail (4); the hinge rod one (201) is connected to the load frame (3) away from the hinge end; the hinge rod two (202) is connected to the receiving frame (1) away from the hinge end; an extension rod (203) is fixedly installed on the hinge rod one (201) at its hinge end; a transmission component (204) is installed on the extension rod (203); the transmission component (204) is used to transfer the potential energy of one end of the load frame (3) to the hinge rod two (202); the end of the hinge rod one (201) near the load frame (3) is hinged to the bracket (6) by a pin (5).

3. The ship lifebuoy throwing device according to claim 2, characterized in that, The bracket (6) includes an L-shaped rod (601); one end of the L-shaped rod (601) can be fixedly set on the guardrail (4); a reinforcing rib (602) is provided at the included angle of the L-shaped rod (601); the end of the L-shaped rod (601) away from the guardrail (4) is hinged to a hinge rod (201) by a pin (5).

4. The ship lifebuoy throwing device according to claim 3, characterized in that, In the non-projectile state, the center line of the hinge rod (201) is set at an acute angle with the plane where the guardrail (4) is located.

5. The ship lifebuoy throwing device according to claim 4, characterized in that, In the non-projectile state, the angle between the center line of the hinge rod (201) and the plane containing the guardrail (4) is 45°.

6. The ship lifebuoy throwing device according to claim 2, characterized in that, A bracket (8) is installed on the guardrail (4) via a bracket (7); the second hinge rod (202) is placed on the bracket (8); in the non-projectile state, the center line of the second hinge rod (202) is perpendicular to the plane where the guardrail (4) is located.

7. The ship lifebuoy throwing device according to claim 2, characterized in that, The transmission component (204) includes a sleeve (2041); the sleeve (2041) is sleeved on the extension rod (203) and fixed to the extension rod (203) by bolts; a semi-circular ring plate (2042) is fixedly provided on the side wall of the sleeve (2041).

8. The ship lifebuoy throwing device according to claim 2, characterized in that, The weight frame (3) includes a shell (301) with an opening at one end; a cover plate (302) is installed at the opening end of the shell (301) by bolts; a round tube (303) is fixedly installed on the side wall of the shell (301); the round tube (303) is sleeved on the hinge rod (201) and the round tube (303) is fixed on the hinge rod (201) by bolts.

9. The ship lifebuoy throwing device according to claim 2, characterized in that, The receiving frame (1) includes a semi-circular arc plate (101); a side stop bar (102) is provided on the semi-circular arc plate (101); a round tube (103) is fixedly provided on the outer wall of one end of the semi-circular arc plate (101); the round tube (103) is sleeved on the hinge rod (202), and the round tube (103) is fixed on the hinge rod (202) by bolts.

10. The ship lifebuoy throwing device according to claim 9, characterized in that, An extension plate (104) is fixedly installed at the end of the semi-circular plate (101) away from the circular tube (103).

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