Navigation rescue device for seapolice

Abstract

The invention relates to the technical field of sea rescue, in particular to a seapolice navigation rescue device which comprises a hoisting mechanism, the hoisting mechanism comprises a seat body, the seat body is connected with the bottom of a helicopter, a rescue mechanism is arranged on the lower side of the hoisting mechanism, the rescue mechanism comprises a bottom plate, the bottom plate is made of a plastic material, and the bottom plate is connected with the bottom of the helicopter. Four side plates are evenly arranged on the bottom plate in the circumferential direction, the ends of the side plates are rotationally connected with the bottom plate, the bottom plate is connected with the base body, and the included angle between each side plate and the bottom plate ranges from 0 degree to 270 degrees; the device has the beneficial effects that through the arrangement of the hoisting mechanism, the device can be installed on the lower side of the helicopter, the helicopter can conveniently drive the rescue device to move, the rescue device is moved to the position above a to-be-rescued person, then the rescue mechanism can fall on the water surface by lowering the hoisting mechanism, and then through overturning of the side plate, the rescue effect is improved. The to-be-rescued personnel can be assisted to climb to the bottom plate, and the rescue rate of the to-be-rescued personnel is

Description

Technical Field

[0001] The present invention relates to the technical field of maritime rescue, and particularly to a marine police navigation rescue device. Background Art

[0002] Maritime rescue refers to the action of assisting people, vessels or aircraft that encounter emergencies or disasters in the marine environment. It involves a variety of complex factors, including but not limited to adverse weather conditions, locations far from land, and potential international boundary issues. With the development of the global economy and tourism, maritime activities are increasing day by day, and the importance of maritime rescue is also becoming increasingly prominent.

[0003] The importance of maritime rescue is reflected in its profound significance in protecting life safety, maintaining the marine environment, and promoting global economic stability. On the vast and unpredictable sea, any unexpected event may quickly turn into a life-and-death emergency. When a vessel or aircraft encounters a breakdown, adverse weather, or other accidents, timely and effective rescue operations can greatly increase the chance of survival of the people in distress and reduce casualties. Behind every successful rescue is the value and respect for life.

[0004] In addition, maritime rescue is also crucial for environmental protection. With the development of the maritime transportation industry, the risk of oil spills and other pollutant emissions is increasing. Once an accident occurs, it will not only damage the marine ecosystem but also affect the coastal communities that rely on these resources for survival. Professional rescue teams can quickly control the situation, limit the spread of pollution, and reduce the impact on the environment, thus protecting our common home on earth.

[0005] Currently, the type of maritime accident that is prone to occur is the accident of people falling into the water. The existing search and rescue methods usually use helicopters for search and rescue. The existing rescue methods mostly rescue people by guiding vessels or lowering a rope ladder. However, the method of guiding vessels often misses the best rescue time. Although lowering a rope ladder can carry out rescue in the first time, the people falling into the water consume a lot of physical strength in the water and usually cannot climb up the rope ladder independently. The above rescue methods will all lead to slow rescue efficiency.

[0006] Therefore, a marine police navigation rescue device is needed to solve the above problems. Summary of the Invention

[0007] In order to solve the above problems, that is, to solve the problem that the people falling into the water cannot climb up the rope ladder independently and need the assistance of rescue personnel, resulting in slow rescue efficiency, the present invention provides a marine police navigation rescue device.

[0008] A marine police navigation rescue device includes a hoisting mechanism. The hoisting mechanism includes a seat body, which is connected to the bottom of a helicopter. A rescue mechanism is arranged below the hoisting mechanism. The rescue mechanism includes a bottom plate made of plastic material. Four side plates are evenly arranged on the bottom plate along the circumferential direction. The ends of the side plates are rotatably connected to the bottom plate. The bottom plate is connected to the seat body, and the included angle between the side plate and the bottom plate is 0° - 270°.

[0009] Specifically, during use, the helicopter is connected to the seat body by a steel cable. When the helicopter moves above the person to be rescued, the steel cable is lowered, causing the hoisting mechanism and the rescue mechanism to move downward. When the bottom plate lands on the water surface, the lowering of the steel cable is stopped, and at the same time, the included angle between the side plate and the bottom plate is kept greater than 180°. Then, the position of the bottom plate is adjusted to move the bottom plate towards the person to be rescued. The bottom plate drives the side plate to move. When one of the side plates moves below the person to be rescued, the person to be rescued pulls the side plate or the bottom plate, and then flips the side plate upwards. The side plate drives the person to be rescued to flip upwards, applying an upward lifting force to assist the person to climb onto the bottom plate. After the person to be rescued climbs onto the bottom plate, flip the other side plates upwards so that the included angle between the side plate and the bottom plate is 90°. The four side plates surround the person on the bottom plate. Then, the steel cable is retracted upwards, and the steel cable drives the hoisting mechanism and the rescue mechanism to move upwards.

[0010] Preferably, the side plate is connected to the bottom plate through a connecting piece. The connecting piece includes a slot opened on the side of the bottom plate. Two hinge blocks are symmetrically and fixedly connected to the bottom plate. An articulated shaft is rotatably connected between the two hinge blocks. The articulated shaft is arranged directly above the slot. The side plate is fixedly sleeved on the articulated shaft. The heights of the hinge blocks in the connecting pieces connecting the two opposite side plates on the bottom plate are equal, and the heights of the hinge blocks in the connecting pieces connecting the other two opposite side plates are higher than those of the hinge blocks connecting the other two side plates.

[0011] Specifically, during use, when the side plate is flipped, the side plate drives the articulated shaft to rotate. When the included angle between the side plate and the bottom plate is greater than 180°, the connecting part between the side plate and the articulated shaft enters the slot. When the rescue device is not in use, first flip the side plates connected by the two lower hinge blocks upwards so that the included angle between these two side plates and the bottom plate is 0°, that is, these two side plates lie flat on the bottom plate. Then, flip the side plates connected by the two higher hinge blocks upwards so that the included angle between these two side plates and the bottom plate is 0°, that is, these two side plates lie flat on the other two side plates, so that the rescue mechanism folds into a plate shape.

[0012] Preferably, an auxiliary member is provided on the side plate. The auxiliary member includes five through grooves that are equally spaced and opened on the side plate. The through grooves penetrate the side plate. Two mounting shafts are symmetrically and fixedly connected to the side walls of the through grooves. A one-way bearing is sleeved on each mounting shaft, and an auxiliary roller is sleeved on the one-way bearing. The one-way bearing can only rotate in the direction close to the bottom plate.

[0013] Specifically, during use, when the person to be rescued is flipped upward under the driving action of the side plate, when the person to be rescued contacts the auxiliary roller, under the rolling action of the auxiliary roller, the person to be rescued is further assisted to climb onto the bottom plate.

[0014] Furthermore, the auxiliary roller is made of plastic material.

[0015] Preferably, an auxiliary piece is provided between two adjacent side plates. Two ends of the auxiliary piece are respectively fixedly connected to the side surfaces of the side plates. The auxiliary piece is made of elastic material.

[0016] Preferably, a lifting member is provided between the bottom plate and the seat body. The lifting member includes a first motor fixedly connected to the bottom surface of the seat body. The output end of the first motor is fixedly connected to a first winding wheel. A main pulling rope is fixedly connected to the first winding wheel. The main pulling rope is fixedly connected to the central part of the bottom plate.

[0017] Specifically, during use, according to the use requirements, the first motor is started. The output end of the first motor drives the first winding wheel to rotate. The first winding wheel winds the main pulling rope, so that the height of the bottom plate can be adjusted.

[0018] Through the setting of the lifting member, by starting the first motor, the extending length of the main pulling rope can be controlled, so as to control the height of the bottom plate and improve the applicability of the rescue device.

[0019] Furthermore, an upward turning member is provided on the side plate. The upward turning member includes a second motor fixedly connected to the hinge block. The output end of the second motor is fixedly connected to the hinge shaft.

[0020] Specifically, during use, when the side plate needs to be turned over, the second motor is started. The output end of the second motor drives the hinge shaft to rotate, and the hinge shaft drives the side plate to turn over.

[0021] Preferably, a turning member is provided on the side plate. The turning member includes two third motors symmetrically and fixedly connected to the seat body. The output end of each third motor is fixedly connected to a second winding wheel. A secondary pulling rope is provided on the second winding wheel. The secondary pulling rope is fixedly connected to the side plate.

[0022] Specifically, when in use and the side plate needs to be flipped, the third motor is started. The output end of the third motor drives the second winding wheel to rotate, and the second winding wheel winds the auxiliary pulling rope, enabling the side plate to flip upward.

[0023] Preferably, a torsion spring is connected between the hinge block and the side plate, and the torsion spring is sleeved on the hinge shaft.

[0024] Specifically, when the included angle between the side plate and the bottom plate is 270°, the torsion spring is in a relaxed state; when the rescue device is in use, due to the setting of the torsion spring, the side plate has a tendency to flip downward, so that when the auxiliary pulling rope is relaxed, the side plate can flip downward.

[0025] Preferably, four support columns are arranged in a matrix on the bottom surface of the seat body.

[0026] Specifically, when in use, when the side plate and the bottom plate are stored in a plate shape under the bottom surface of the helicopter, the support columns contact the top surface of the side plate, enabling the side plate and the bottom plate to be stably stored at the bottom of the helicopter.

[0027] Preferably, a pull ring is fixedly connected to the top surface of the seat body.

[0028] Specifically, through the setting of the pull ring, the seat body can be connected to the helicopter through a steel cable. The beneficial effects of the present invention are as follows: 1. Through the setting of the hoisting mechanism, the device can be installed under the helicopter, facilitating the helicopter to drive the rescue device to move, and moving the rescue device above the person to be rescued. Then, by lowering the hoisting mechanism, the rescue mechanism can be landed on the water surface. After that, through the flipping of the side plate, it can assist the person to be rescued to climb onto the bottom plate, realizing the rescue of the person to be rescued. There is no need to send rescue personnel for assistance anymore, improving the rescue efficiency. And through the setting of the four side plates, after the person to be rescued climbs onto the bottom plate, the four side plates can flip upward to enclose the rescued person, preventing the rescued person from falling off the bottom plate during the ascending process of the helicopter and improving the safety of the device.

[0029] 2. Through the setting of the connecting piece, when the side plate flips, it can flip into the slot, enabling the side plate to have a larger flipping angle and facilitating the rescue work; and through the setting of different heights of the two groups of hinge blocks, the four side plates can be stacked on the bottom plate to form a plate-shaped structure, which is convenient to be stored directly under the helicopter. During use, the hoisting mechanism and the rescue mechanism can be directly lowered, facilitating the rapid progress of the rescue work and not affecting the normal use of the helicopter.

[0030] 3. Through the setting of the auxiliary member, during the process of the side plate lifting the person to be rescued, through the rotation setting of the auxiliary roller, it can further assist the person to be rescued to climb onto the bottom plate, and through the setting of the one-way bearing, it can prevent the auxiliary roller from rotating in the reverse direction, causing the person to be rescued to fall off the side plate.

[0031] 4. Through the setting of the flipping member, when the side plate needs to be flipped, the auxiliary pulling rope can be stretched and relaxed by the second winding wheel, so that the side plate moves, thereby realizing the rescue of the person to be rescued; and compared with the upward flipping member, through the setting of the auxiliary pulling rope, the required motor torque can be smaller, reducing the production cost of the device, and compared with the upward flipping member, the required motor does not need to be in contact with water, improving the stability of the device, and through the setting of multiple auxiliary pulling ropes, the connection between the rescue mechanism and the hoisting mechanism is made more stable. Description of the Drawings

[0032] Figure 1 Schematic three-dimensional structure of the present invention Figure 1 ; Figure 2 Schematic three-dimensional structure of the present invention Figure 2 ; Figure 3 Front view of the present invention; Figure 4 Of the present invention Figure 3 Isometric side sectional view at A-A in; Figure 5 Of the present invention Figure 3 Isometric side sectional view at B-B in; Figure 6 Of the present invention Figure 3 Isometric side sectional view at C-C in; Figure 7 Of the present invention Figure 5 Partial enlarged view at D in; Figure 8 Of the present invention Figure 6 Partial enlarged view at E in.

[0033] In the figure: 1. Hoisting mechanism; 11. Base body; 12. Pulling ring; 2. Rescue mechanism; 21. Bottom plate; 22. Side plate; 23. Connecting member; 231. Groove; 232. Hinge block; 233. Hinge shaft; 234. Torsion spring; 24. Auxiliary member; 241. Through groove; 242. Mounting shaft; 243. Auxiliary roller; 25. Auxiliary piece; 26. Lifting member; 261. First motor; 262. First winding wheel; 263. Main pulling rope; 27. Flipping member; 271. Third motor; 272. Second winding wheel; 273. Auxiliary pulling rope; 28. Support column. Detailed Description of the Invention

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0035] As Figure 1 、 Figure 2 shown, an embodiment of the present invention discloses a marine police navigation rescue device, including a hoisting mechanism 1. The hoisting mechanism 1 includes a seat body 11, and the seat body 11 is connected to the bottom of the helicopter. A rescue mechanism 2 is arranged below the hoisting mechanism 1. The rescue mechanism 2 includes a bottom plate 21. The bottom plate 21 is made of plastic material. Four side plates 22 are uniformly arranged on the bottom plate 21 along the circumferential direction. The end of the side plate 22 is rotatably connected to the bottom plate 21. The bottom plate 21 is connected to the seat body 11. The included angle between the side plate 22 and the bottom plate 21 is 0° - 270°.

[0036] Specifically, during use, the helicopter is connected to the seat body 11 through a steel cable. When the helicopter moves above the person to be rescued, the steel cable is lowered, so that the hoisting mechanism 1 and the rescue mechanism 2 move downward. When the bottom plate 21 lands on the water surface, the lowering of the steel cable is stopped, and at the same time, the included angle between the side plate 22 and the bottom plate 21 is kept greater than 180°. Then, the position of the bottom plate 21 is adjusted to make the bottom plate 21 move towards the direction close to the person to be rescued. The bottom plate 21 drives the side plate 22 to move. When one of the side plates 22 moves below the person to be rescued, the person to be rescued pulls the side plate 22 or the bottom plate 21 by hand, and then turns the side plate 22 upwards. The side plate 22 drives the person to be rescued to turn upwards, applying an upward lifting force to the person to be rescued to assist the person to climb onto the bottom plate 21. After the person to be rescued climbs onto the bottom plate 21, the other side plates are turned upwards so that the included angle between the side plate 22 and the bottom plate 21 is 90°. The four side plates 22 surround the person to be rescued on the bottom plate 21. Then, the steel cable is retracted upwards, and the steel cable drives the hoisting mechanism 1 and the rescue mechanism 2 to move upwards.

[0037] Through the setting of the hoisting mechanism 1, the device can be installed under the helicopter, which is convenient for the helicopter to drive the rescue device to move, and move the rescue device above the person to be rescued. Then, by lowering the hoisting mechanism 1, the rescue mechanism 2 can land on the water surface. Then, through the flipping of the side plate 22, the person to be rescued can be assisted to climb onto the bottom plate 21, realizing the rescue of the person to be rescued. There is no need to send rescue personnel for assistance anymore, improving the rescue efficiency. And through the setting of the four side plates 22, after the person to be rescued climbs onto the bottom plate 21, the four side plates 22 can be turned upwards to surround the rescued person, avoiding the rescued person falling from the bottom plate 21 during the ascending process of the helicopter, improving the safety of the device.

[0038] As Figure 2 、Figure 3 , Figure 5 , Figure 7 As shown in Figure 3 , Figure 5 , and Figure 7 , the side plate 22 is connected to the bottom plate 21 through a connecting member 23. The connecting member 23 includes a slot 231 opened on the side of the bottom plate 21. Two hinge blocks 232 are symmetrically and fixedly connected to the bottom plate 21. An articulated shaft 233 is rotatably connected between the two hinge blocks 232. The articulated shaft 233 is disposed directly above the slot 231. The side plate 22 is fixedly sleeved on the articulated shaft 233. The hinge blocks 232 in the connecting member 23 connecting the two opposite side plates 22 on the bottom plate 21 have equal heights, and the hinge blocks 232 in the connecting member 23 connecting two of the opposite side plates 22 are higher than the hinge blocks 232 connecting the other two side plates 22.

[0039] Specifically, during use, when the side plate 22 is flipped, the side plate 22 drives the articulated shaft 233 to rotate. When the angle between the side plate 22 and the bottom plate 21 is greater than 180°, the connecting part of the side plate 22 and the articulated shaft 233 enters the slot 231. After the rescue device is used up, first flip the side plates 22 connected to the two lower hinge blocks 232 upward so that the angle between these two side plates 22 and the bottom plate 21 is 0°, that is, these two side plates 22 lie flat on the bottom plate 21. Then flip the side plates 22 connected to the two higher hinge blocks 232 upward so that the angle between these two side plates 22 and the bottom plate 21 is 0°, that is, these two side plates lie flat on the other two side plates 22, thereby folding the rescue mechanism 2 into a plate shape.

[0040] Through the setting of the connecting member 23, when the side plate 22 is flipped, it can flip into the slot 231, enabling a larger flipping angle of the side plate 22 and facilitating the rescue work. And through the setting of different heights of the two groups of hinge blocks 232, the four side plates 22 can be stacked on the bottom plate 21 to form a plate-like structure, which is convenient for storage directly under the helicopter. During use, the hoisting mechanism 1 and the rescue mechanism 2 can be directly lowered, facilitating the rapid progress of the rescue work without affecting the normal use of the helicopter.

[0041] As Figure 2 , Figure 6 shown, an auxiliary member 24 is provided on the side plate 22. The auxiliary member 24 includes five through slots 241 opened at equal intervals on the side plate 22. The through slots 241 penetrate the side plate 22. Two mounting shafts 242 are symmetrically and fixedly connected to the side walls of the through slots 241. A one-way bearing is sleeved on each mounting shaft 242, and an auxiliary roller 243 is sleeved on the one-way bearing. The one-way bearing can only rotate in the direction close to the bottom plate 21.

[0042] Specifically, when in use, when the person to be rescued is flipped upward under the driving action of the side plate 22 and comes into contact with the auxiliary roller 243, under the rolling action of the auxiliary roller 243, it further assists the person to be rescued to climb onto the bottom plate 21.

[0043] Through the setting of the auxiliary member 24, during the process of the side plate 22 lifting the person to be rescued, through the rotation setting of the auxiliary roller 243, it can further assist the person to be rescued to climb onto the bottom plate 21, and through the setting of the one-way bearing, it can prevent the auxiliary roller 243 from rotating in the reverse direction, causing the person to be rescued to fall off the side plate 22.

[0044] Furthermore, the auxiliary roller 243 is made of plastic material.

[0045] As Figure 2 shown, an auxiliary piece 25 is arranged between two adjacent side plates 22. Both ends of the auxiliary piece 25 are fixedly connected to the side surfaces of the side plates 22 respectively. The auxiliary piece 25 is made of elastic material.

[0046] Through the setting of the auxiliary piece 25, during the rescue, it increases the grasping area of the person to be rescued and further improves the practicability of the rescue device.

[0047] As Figure 2 、 Figure 3 shown, a lifting member 26 is arranged between the bottom plate 21 and the seat body 11. The lifting member 26 includes a first motor 261 fixedly connected to the bottom surface of the seat body 11. The output end of the first motor 261 is fixedly connected with a first winding wheel 262. A main pulling rope 263 is fixedly connected to the first winding wheel 262. The main pulling rope 263 is fixedly connected to the central part of the bottom plate 21.

[0048] Specifically, when in use, according to the usage needs, the first motor 261 is started. The output end of the first motor 261 drives the first winding wheel 262 to rotate. The first winding wheel 262 winds the main pulling rope 263, so that the height of the bottom plate 21 can be adjusted.

[0049] Through the setting of the lifting member 26, by starting the first motor 261, the extending length of the main pulling rope 263 can be controlled, thereby controlling the height of the bottom plate 21 and improving the applicability of the rescue device.

[0050] Furthermore, an upward turning member is arranged on the side plate 22. The upward turning member includes a second motor fixedly connected to the hinge block 232. The output end of the second motor is fixedly connected to the hinge shaft 233.

[0051] Specifically, when in use, when the side plate 22 needs to be turned over, the second motor is started. The output end of the second motor drives the hinge shaft 233 to rotate, and the hinge shaft 233 drives the side plate 22 to turn over.

[0052] As Figure 2 , Figure 4 , Figure 8 shown, a flipping member 27 is provided on the side plate 22. The flipping member 27 includes two third motors 271 symmetrically and fixedly connected to the seat body 11. A second winding wheel 272 is fixedly connected to the output end of each third motor 271. A secondary pulling rope 273 is provided on the second winding wheel 272. The secondary pulling rope 273 is fixedly connected to the side plate 22.

[0053] Specifically, during use, when the side plate 22 needs to be flipped, the third motor 271 is started. The output end of the third motor 271 drives the second winding wheel 272 to rotate. The second winding wheel 272 winds the secondary pulling rope 273, enabling the side plate 22 to flip upward.

[0054] Through the setting of the flipping member 27, when the side plate 22 needs to be flipped, the secondary pulling rope 273 can be stretched and relaxed by the second winding wheel 272, causing the side plate 22 to move, thereby realizing the rescue of the person to be rescued. And compared with the upward flipping member, through the setting of the secondary pulling rope 273, the required motor torque can be smaller, reducing the production cost of the device. Also, compared with the upward flipping member, the required motor does not need to be in contact with water, improving the stability of the device. And through the setting of multiple secondary pulling ropes 273, the connection between the rescue mechanism 2 and the hoisting mechanism 1 is made more stable.

[0055] As Figure 3 , Figure 7 shown, a torsion spring 234 is connected between the hinge block 232 and the side plate 22. The torsion spring 234 is sleeved on the hinge shaft 233.

[0056] Specifically, when the angle between the side plate 22 and the bottom plate 21 is 270°, the torsion spring 234 is in a relaxed state. During the use of the rescue device, due to the setting of the torsion spring 234, the side plate 22 has a tendency to flip downward, enabling the side plate 22 to flip downward when the secondary pulling rope 273 is relaxed.

[0057] As Figure 2 shown, four support columns 28 are arranged in a matrix on the bottom surface of the seat body 11.

[0058] Specifically, during use, when the side plate 22 and the bottom plate 21 are stored in a plate shape on the bottom surface of the helicopter, the support columns 28 contact the top surface of the side plate 22, enabling the side plate 22 and the bottom plate 21 to be stably stored at the bottom of the helicopter.

[0059] As Figure 5 shown, a pull ring 12 is fixedly connected to the top surface of the seat body 11.

[0060] Specifically, through the setting of the pull ring 12, the seat body 11 can be connected to the helicopter through a steel cable.

[0061] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0062] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles or devices / equipment.

[0064] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A nautical rescue device for coast guard, characterized in that, It includes a hoisting mechanism. The hoisting mechanism includes a base body which is connected to the bottom of a helicopter. A rescue mechanism is arranged on the lower side of the hoisting mechanism. The rescue mechanism includes a bottom plate which is made of plastic material. Four side plates are evenly arranged on the bottom plate along the circumferential direction. The end of the side plate is rotatably connected to the bottom plate. The bottom plate is connected to the base body, and the included angle between the side plate and the bottom plate is 0°-270°.

2. The marine police navigation rescue device according to claim 1, characterized in that, The side plate is connected to the bottom plate through a connecting piece. The connecting piece includes a slot opened on the side of the bottom plate. Two hinge blocks are symmetrically and fixedly connected to the bottom plate. An articulated shaft is rotatably connected between the two hinge blocks. The articulated shaft is arranged directly above the slot. The side plate is fixedly sleeved on the articulated shaft. The heights of the hinge blocks in the connecting pieces connecting the two opposite side plates on the bottom plate are equal, and the heights of the hinge blocks in the connecting pieces connecting the other two opposite side plates are higher than those of the hinge blocks connecting the other two side plates.

3. The nautical rescue device for coast guard according to claim 2, characterized in that, An auxiliary piece is arranged on the side plate. The auxiliary piece includes five through slots opened on the side plate at equal intervals. The through slots penetrate the side plate. Two mounting shafts are symmetrically and fixedly connected to the side wall of the through slot. A one-way bearing is sleeved on each mounting shaft. An auxiliary roller is sleeved on the one-way bearing, and the one-way bearing can only rotate in the direction close to the bottom plate.

4. The marine police navigation rescue device according to claim 3, characterized in that, An auxiliary sheet is arranged between two adjacent side plates. The two ends of the auxiliary sheet are respectively fixedly connected to the side surfaces of the side plates. The auxiliary sheet is made of elastic material.

5. The marine police navigation rescue device according to claim 4, characterized in that, A lifting piece is arranged between the bottom plate and the base body. The lifting piece includes a first motor fixedly connected to the bottom surface of the base body. The output end of the first motor is fixedly connected to a first winding wheel. A main pulling rope is fixedly connected to the first winding wheel. The main pulling rope is fixedly connected to the central part of the bottom plate.

6. The marine police navigation rescue device according to claim 5, characterized in that, An upward turning piece is arranged on the side plate. The upward turning piece includes a second motor fixedly connected to the hinge block. The output end of the second motor is fixedly connected to the articulated shaft.

7. The marine police navigation rescue device according to claim 5, characterized in that, A turning piece is arranged on the side plate. The turning piece includes two third motors symmetrically and fixedly connected to the base body. The output end of each third motor is fixedly connected to a second winding wheel. A secondary pulling rope is arranged on the second winding wheel. The secondary pulling rope is fixedly connected to the side plate.

8. The marine police navigation rescue device according to claim 7, characterized in that, A torsion spring is connected between the hinge block and the side plate. The torsion spring is sleeved on the articulated shaft.

9. The nautical rescue device for coast guard according to claim 1, characterized in that, Four support columns are arranged in a matrix on the bottom surface of the base body.

10. A marine police navigation rescue device according to claim 1, characterized in that, A pull ring is fixedly connected to the top surface of the base body.

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