Underwater lifesaving device for fire rescue

Abstract

The invention relates to the field of fire rescue, in particular to an underwater lifesaving device for fire rescue. An existing device is not high enough in safety and insufficient in stability during underwater lifesaving, potential safety hazards are prone to occurring, rapid diving into water is not convenient to achieve, and the rescue efficiency is reduced. An underwater lifesaving device for fire rescue comprises an arc panel and the like. One end of the cambered surface plate is fixedly connected with a first soft belt, the other end of the cambered surface plate is fixedly connected with a second soft belt, the surface of one side of the first soft belt is fixedly connected with a hook-and-loop fastener hook face, and the surface of one side of the second soft belt is fixedly connected with a hook-and-loop fastener loop face. Due to the fact that the cambered surface plate is located on the belly of the wearer and the buoyancy tanks are distributed at the belly of the wearer, buoyancy borne by the buoyancy tanks enables the wearer to always keep the face upward in the process of floating to the water surface and after floating out of the water surface, and the suffocation risk of the wearer is reduced.

Description

Technical Field

[0001] The present invention relates to the field of firefighting and rescue, and in particular to an underwater life-saving device for firefighting and rescue. Background Art

[0002] In real life, due to people's lack of safety awareness, drowning and other situations often occur. In this case, firefighters are required to quickly launch rescue operations to protect people's lives and property in a timely manner.

[0003] However, the existing devices are not safe enough, lack stability during underwater rescue, are prone to potential safety hazards, and are not easy to quickly dive into the water, reducing the efficiency of rescue. Summary of the invention

[0004] In order to overcome the shortcomings of the background technology, the technical problem of the present invention is to provide an underwater life-saving device for firefighting and rescue, which improves safety, enhances stability, reduces the probability of potential safety hazards, and facilitates rapid diving, thereby improving rescue efficiency.

[0005] The technical implementation scheme of the present invention is: an underwater life-saving device for firefighting and rescue, comprising an arc panel, one end of the arc panel is fixedly connected to soft belt one, the other end of the arc panel is fixedly connected to soft belt two, one side surface of the soft belt one is fixedly connected to a Velcro hook surface, one side surface of the soft belt two is fixedly connected to a Velcro fur surface, a floating mechanism is arranged on one side of the arc panel, the floating mechanism is used to assist firefighters to float and sink in water, and a water supply and drainage mechanism is arranged on the floating mechanism, the water supply and drainage mechanism is used to inject or discharge water into the floating mechanism.

[0006] More preferably, the floating mechanism includes a fixed beam, the fixed beam is fixedly connected to one side of the arc panel, a plurality of buoyancy tanks are fixedly connected to the fixed beam, the buoyancy tanks are hollow structures, two fan-shaped holes are opened on the upper part of the buoyancy tanks, the soft belt 1 and the soft belt 2 are fixedly connected to a plurality of anti-slip strips on the inner side wall close to the arc panel, and a plurality of soft pads are fixedly connected to the side of the arc panel away from the fixed beam.

[0007] More preferably, the water supply and drainage mechanism includes a float plate, a two-way air pump is fixedly connected to the float plate, a connecting pipe rack is fixedly connected between the upper parts of several buoyancy tanks, the interior of the connecting pipe rack is connected with the interiors of several buoyancy tanks, a connecting long pipe is connected between the lower part of the two-way air pump and the connecting pipe rack, and a switch button is fixedly connected on the side of the arc panel close to the fixed beam, and the switch button is used to control the working state of the two-way air pump.

[0008] More preferably, an anti-leakage mechanism is included, which is arranged at the lower part of several of the buoyancy tanks, and the anti-leakage mechanism is used to prevent the air filled in the buoyancy tanks from escaping. The anti-leakage mechanism includes several connecting pipes, and several of the connecting pipes are respectively fixedly connected to the lower parts of several of the buoyancy tanks, and several of the connecting pipes are fixedly connected with pull-down hoses at the lower part, and the interior of the pull-down hoses is connected with the interior of the connecting pipes and the interior of the buoyancy tanks. The lower part of each pull-down hose is rotatably connected to a rotating ring, and both sides of each rotating ring are rotatably connected to swing rods, and the lower end of each swing rod is fixedly connected to a lead sinker, and a ball valve is rotatably connected in each connecting pipe, and both sides of each ball valve are rotatably connected to gravity rods, and the lower end of each pull-down hose is fixedly connected to a blocking net.

[0009] More preferably, a quick diving mechanism is further included, which is arranged on the fixed beam, and is used to open the buoyancy tank so that the buoyancy tank can quickly take in water for sinking. The quick diving mechanism includes a plurality of rotating disks, three of which form a group, and the plurality of rotating disks are rotatably connected to the upper parts of the plurality of buoyancy tanks respectively, and grooves are provided on the sides of the rotating disks. A torsion spring is connected between the rotating disks and the buoyancy tanks, and the upper parts of the plurality of rotating disks are fixedly connected with perforated sheets, and the perforated sheets have two communicating holes, and three of which form a group, and the perforated sheets are in contact with the upper surface of the buoyancy tank. Two guide columns are fixedly connected to the fixed beam, and three guide grooves are provided on the guide columns. Two multi-tube guide frames are fixedly connected to one side of the fixed beam, and three through holes are opened on the multi-tube guide frame. The three rotating disks in each group are connected with a connecting rope, and a part of the connecting rope is wrapped in the groove on the side of the rotating disk. The three connecting ropes connected to the three rotating disks in the same group all bypass one of the guide columns, and the three connecting ropes are respectively located in the guide grooves on the guide columns. The three connecting ropes connected to the three rotating disks in the same group all pass through one of the multi-tube guide frames, and the three connecting ropes respectively pass through the through holes on the multi-tube guide frame. A pull ring is fixedly connected between the three connecting ropes connected to the three rotating disks in the same group, and the pull ring is in contact with one side of the multi-tube guide frame.

[0010] Compared with the prior art, the present invention has the following advantages: 1. The wearer presses the switch button to control the two-way air pump to evacuate each buoyancy tank for a certain period of time through the connecting long tube and the connecting pipe rack. Then, after the air in the buoyancy tank is evacuated, water enters the interior from the lower part of the buoyancy tank and fills the interior of the buoyancy tank. The buoyancy of the buoyancy tank decreases, so that the wearer can dive in the water. When the wearer presses the switch button again in the water, the two-way air pump will be controlled to inflate the interior of each buoyancy tank. Inflation of the interior of the buoyancy tank will squeeze out the water filled in the buoyancy tank from the lower part, so that the interior of the buoyancy tank is filled with air again. The buoyancy of the buoyancy tank filled with air will increase. The buoyancy tank with increased buoyancy will drive the arc panel and then drive the wearer to float to the water surface. Since the arc panel is located on the abdomen of the wearer and the buoyancy tanks are distributed at the abdomen of the wearer, the buoyancy of the buoyancy tank will enable the wearer to always keep his face up during and after floating to the water surface, thereby reducing the risk of suffocation of the wearer.

[0011] 2. When the wearer moves in the water, the arc panel and the buoyancy tank will tilt together with the wearer's body, and then the tilt of the buoyancy tank will drive the connecting pipe to tilt together. When the connecting pipe tilts, under the influence of gravity, the lead pendant will keep the pipe mouth at the bottom of the pull-down hose always in the right direction, and the gravity rod will drive the ball valve to rotate. When the wearer's body tilts a certain angle and the connecting pipe tilts a certain angle together, the ball valve rotates a certain angle, so that the ball valve is in a closed state, and the buoyancy tank and the pull-down hose are no longer connected. Therefore, when the wearer needs to float in the water, he must keep his body in a vertical state and then press the switch button. The buoyancy device can be easily adjusted by pressing the button to float, and then the ball valve can change the conduction state according to the inclination of the wearer's body. In this way, the air filled in the buoyancy tank is not easy to escape due to the excessive inclination of the wearer's body when the wearer floats up, thereby reducing the buoyancy. When the wearer floats to the water surface and floats on the water surface with his abdomen facing up, the pull-down hose will bend downward under the influence of the lead weight, so that the lower pipe mouth of the pull-down hose is always in the water, preventing the gas in the buoyancy tank from leaking, so that the wearer can continue to float on the water surface. This makes the device more stable when the wearer is performing underwater lifesaving and is less likely to have safety hazards.

[0012] 3. Initially, the perforated sheet will block the fan-shaped holes on the upper part of the buoyancy tank. When the wearer puts on the device and enters the water, and places the float disk and the two-way air pump on the water surface, the wearer can pull the pull ring in the direction away from the abdomen, and the pull ring will drive the rotating disk to rotate and move at an angle through the connecting rope. The torsion spring is twisted, and then the rotation of the rotating disk will drive the perforated sheet to rotate at a certain angle, so that the connecting hole on the perforated sheet is aligned with the fan-shaped hole on the upper part of the buoyancy tank, so that the buoyancy tank is connected to the outside world through the fan-shaped holes on the upper part, and then water can enter the interior through the fan-shaped holes on the upper part of the buoyancy tank, so that the buoyancy tank can be quickly filled with water, and there is no need to control the two-way air pump to pump air to fill the buoyancy tank with water, so that the wearer can sink more quickly, thereby improving the efficiency of firefighting and rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the floating mechanism and the water supply and drainage mechanism of the present invention.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the floating mechanism of the present invention.

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the air leakage prevention mechanism of the present invention.

[0017] Figure 5 It is a partial three-dimensional structural schematic diagram of the air leakage prevention mechanism of the present invention.

[0018] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the buoyancy tank and the connecting pipe of the present invention.

[0019] Figure 7 It is a schematic diagram of the three-dimensional structure of the pull-down hose and the barrier net of the present invention.

[0020] Figure 8 It is a three-dimensional structural schematic diagram of the fast diving mechanism of the present invention.

[0021] Fig. 9 It is a schematic diagram of the separated three-dimensional structure of the buoyancy tank, the rotating disk, the perforated sheet and the connecting rope of the present invention.

[0022] Fig.10 It is a partial three-dimensional structural schematic diagram of the fast diving mechanism of the present invention.

[0023] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged three-dimensional structure at point A in the middle.

[0024] The markings of the components in the accompanying drawings are as follows: 1, arc panel, 21, soft belt one, 22, soft belt two, 31, Velcro hook surface, 32, Velcro fur surface, 41, fixed beam, 42, buoyancy tank, 43, anti-slip strip, 44, soft cushion, 51, floating disc, 52, two-way air pump, 53, connecting pipe rack, 54, connecting long pipe, 55, switch button, 61, connecting pipe, 62, pull-down hose, 63, rotating ring, 64, swing rod, 65, lead sinker, 66, ball valve, 67, gravity rod, 68, blocking net, 71, rotating disc, 72, torsion spring, 73, perforated plate, 74, guide column, 75, multi-tube guide frame, 76, connecting rope, 77, pull ring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] An underwater life-saving device for fire rescue, such as Figure 1-11 As shown, it includes an arc panel 1, one end of which is fixedly connected to a soft belt 1 21, the other end of which is fixedly connected to a soft belt 2 22, one side surface of the soft belt 1 21 is fixedly connected to a Velcro hook surface 31, and one side surface of the soft belt 22 is fixedly connected to a Velcro fur surface 32. A floating mechanism is arranged on one side of the arc panel 1, and the floating mechanism is used to assist firefighters to float and sink in water. A water supply and drainage mechanism is arranged on the floating mechanism, and the water supply and drainage mechanism is used to inject or discharge water into or out of the floating mechanism.

[0028] The floating mechanism includes a fixed beam 41, which is fixedly connected to one side of the arc panel 1. A plurality of buoyancy tanks 42 are fixedly connected to the fixed beam 41. The buoyancy tanks 42 are hollow structures, and two fan-shaped holes are opened on the upper part of the buoyancy tanks 42. A plurality of anti-slip strips 43 are fixedly connected to the inner side walls of the soft belt 1 21 and the soft belt 2 22 close to the arc panel 1, and a plurality of soft pads 44 are fixedly connected to the side of the arc panel 1 away from the fixed beam 41.

[0029] The water supply and drainage mechanism includes a float plate 51, to which a two-way air pump 52 is fixedly connected, a connecting pipe rack 53 is fixedly connected between the upper parts of several buoyancy tanks 42, the interior of the connecting pipe rack 53 is connected with the interiors of several buoyancy tanks 42, a connecting long pipe 54 is connected between the lower part of the two-way air pump 52 and the connecting pipe rack 53, and a switch button 55 is fixedly connected on the side of the arc panel 1 close to the fixed beam 41, and the switch button 55 is used to control the working state of the two-way air pump 52.

[0030] In actual work, the wearer first places the arc panel 1 on the abdomen, and then puts the soft belt 2 22 close to the surface of the soft belt 1 21, so that the Velcro hook surface 31 and the Velcro fur surface 32 are buckled, so that the device is worn on the waist and abdomen, and the direction of the switch button 55 is facing the front of the wearer. The soft pad 44 on the arc panel 1 can adapt to the body shape of different people, and the anti-slip strips 43 on the soft belt 1 21 and the soft belt 2 22 can be close to the back of the wearer, so that the arc panel 1 is not easy to move. After the wearer wears the arc panel 1 to the abdomen, the wearer enters the water again, so that the buoyancy tank 42 and the arc panel 1 are both located below the water surface, and the float plate 51 and the two-way air pump 52 are placed on the water surface. The two-way air pump 52 and the float plate 51 will always float on the water surface due to buoyancy. Since the buoyancy tank 42 enters the water with the lower opening facing downward, the air in the buoyancy tank 42 will be blocked by water. At this time, the buoyancy tank 42 will be subject to a certain buoyancy in the water. Then the wearer presses the switch button 55 to control the two-way air pump 52 to float on the water surface. The pump 52 is connected to the long tube 54 and the connecting pipe rack 53 to evacuate air from each buoyancy tank 42 for a certain period of time. After the air in the buoyancy tank 42 is evacuated, water enters the buoyancy tank 42 from the bottom and fills the buoyancy tank 42. The buoyancy of the buoyancy tank 42 decreases, allowing the wearer to dive in the water. When the wearer presses the switch button 55 again in the water, the two-way air pump 52 is controlled to inflate each buoyancy tank 42. Inflation of the buoyancy tank 42 will fill the buoyancy tank 42 with air. Water is squeezed out from the bottom, causing the buoyancy tank 42 to be filled with air again. The buoyancy of the buoyancy tank 42 filled with air will increase, and the buoyancy tank 42 with increased buoyancy will drive the arc panel 1 and then drive the wearer to float to the water surface. Since the arc panel 1 is located on the abdomen of the wearer and the buoyancy tanks 42 are distributed at the abdomen of the wearer, the buoyancy of the buoyancy tank 42 will enable the wearer to always keep his face up during and after floating to the surface of the water, thereby reducing the risk of suffocation of the wearer.

[0031] Example 2

[0032] On the basis of Example 1, Figure 4-7As shown, it also includes an anti-leakage mechanism, which is arranged at the lower part of the plurality of buoyancy tanks 42, and the anti-leakage mechanism is used to prevent the air filled in the buoyancy tanks 42 from escaping, and the anti-leakage mechanism includes a plurality of connecting pipes 61, and the plurality of connecting pipes 61 are respectively fixedly connected to the lower part of the plurality of buoyancy tanks 42, and the plurality of connecting pipes 61 are fixedly connected to the lower part of the plurality of buoyancy tanks 42, and the lower part of the plurality of connecting pipes 61 is fixedly connected to a pull-down hose 62, and the interior of the pull-down hose 62 is connected to the interior of the connecting pipe 61 and the interior of the buoyancy tank 42, and each The lower part of each pull-down hose 62 is rotatably connected to a rotating ring 63, each of the rotating rings 63 is rotatably connected to a swing rod 64 on both sides, each of the swing rods 64 is fixedly connected to a lead sinker 65 at the lower end, each of the connecting pipes 61 is rotatably connected to a ball valve 66, each of the ball valves 66 is rotatably connected to both sides, and each of the pull-down hoses 62 is fixedly connected to a blocking net 68 at the lower end, and the blocking net 68 is used to prevent aquatic plants or debris in the water from entering the pull-down hose 62.

[0033] Initially, when the connecting pipe 61 is perpendicular to the ground, the ball valve 66 is in a conducting state. When the wearer is underwater, due to gravity, the mouth of the pull-down hose 62 faces downward. When the wearer moves in the water, the arc panel 1 and the buoyancy tank 42 will tilt together with the inclination of the wearer's body, and then the inclination of the buoyancy tank 42 will drive the connecting pipe 61 to tilt together. When the connecting pipe 61 tilts, under the influence of gravity, the lead pendant 65 will make the mouth of the lower part of the pull-down hose 62 always maintain a facing posture, and the gravity rod 67 will drive the ball valve 66 to rotate. When the wearer's body tilts a certain angle and the connecting pipe 61 tilts a certain angle together, the ball valve 66 rotates a certain angle, so that the ball valve 66 is in a closed state, and the buoyancy tank 42 and the pull-down hose 62 are no longer connected. Therefore, when the wearer needs to float in the water, he must keep The body is in a vertical state, and then the switch button 55 is pressed to float up. Then the ball valve 66 can change the conduction state according to the inclination of the wearer's body. In this way, when the wearer floats up, the air filled in the buoyancy tank 42 is not easy to escape due to the excessive inclination of the wearer's body, thereby reducing the buoyancy. When the wearer floats to the water surface and floats on the water surface with his abdomen facing up, the pull-down hose 62 will bend downward under the influence of the lead sinker 65, so that the lower pipe mouth of the pull-down hose 62 is always located in the water to prevent the gas in the buoyancy tank 42 from leaking out. In this way, the wearer can continue to float on the water surface. The blocking net 68 at the lower pipe mouth of the pull-down hose 62 can prevent water plants or debris in the water from being sucked into the buoyancy tank 42. In this way, the device is more stable when the wearer is underwater for lifesaving and is not prone to safety hazards.

[0034] Example 3

[0035] On the basis of Example 2, Figure 8-11As shown, a fast diving mechanism is also included, which is arranged on the fixed beam 41. The fast diving mechanism is used to open the buoyancy tank 42 so that the buoyancy tank 42 can quickly fill with water for sinking. The fast diving mechanism includes a plurality of rotating disks 71, three of which form a group, and the plurality of rotating disks 71 are rotatably connected to the upper parts of the plurality of buoyancy tanks 42 respectively. A groove is provided on the side of the rotating disk 71, and a torsion spring 72 is connected between the rotating disk 71 and the buoyancy tank 42. The upper parts of the plurality of rotating disks 71 are all fixedly connected with perforated sheets 73, and the perforated sheets 73 have two communicating holes, and three of which form a group, and the perforated sheets 73 are in contact with the upper surface of the buoyancy tank 42. Two guide columns 74 are fixedly connected to the fixed beam 41, and three guide grooves are provided on the guide columns 74. Two guide columns 74 are fixedly connected to one side of the fixed beam 41. A multi-tube guide frame 75, wherein three through holes are formed on the multi-tube guide frame 75, and each of the three rotating disks 71 in each group is connected with a connecting rope 76, and a portion of the connecting rope 76 is wound around a groove on the side of the rotating disk 71, and the three connecting ropes 76 connected to the three rotating disks 71 in the same group are all wound around one of the guide columns 74, and the three connecting ropes 76 are respectively located in the guide grooves on the guide columns 74, and the guide columns 74 are used to guide different connecting ropes 76 respectively, and the three connecting ropes 76 connected to the three rotating disks 71 in the same group are all passed through one of the multi-tube guide frames 75, and the three connecting ropes 76 are respectively passed through the through holes on the multi-tube guide frame 75, and a pull ring 77 is fixedly connected between the three connecting ropes 76 connected to the three rotating disks 71 in the same group, and the pull ring 77 is in contact with one side of the multi-tube guide frame 75.

[0036] Initially, the perforated sheet 73 will cover the fan-shaped hole on the upper part of the buoyancy tank 42. When the wearer puts on the device and enters the water, and places the float plate 51 and the two-way air pump 52 on the water surface, the wearer can pull the pull ring 77 in the direction away from the abdomen, and the pull ring 77 will drive the rotating disk 71 to rotate and move the angle through the connecting rope 76. The torsion spring 72 is twisted, and then the rotation of the rotating disk 71 will drive the perforated sheet 73 to rotate a certain angle together, so that the connecting hole on the perforated sheet 73 is aligned with the fan-shaped hole on the upper part of the buoyancy tank 42, so that The buoyancy tank 42 is connected to the outside through the fan-shaped hole on the top, and then water can enter the inside through the fan-shaped hole on the top of the buoyancy tank 42, so that the buoyancy tank 42 can be quickly filled with water. There is no need to control the two-way air pump 52 to pump air to fill the buoyancy tank 42, so that it is easier for the wearer to sink quickly, thereby improving the efficiency of firefighting and rescue. When the buoyancy tank 42 is full of water, the wearer loosens the pull ring 77, and the torsion spring 72 drives the rotating disk 71 to rotate and reset, and the rotating disk 71 pulls the connecting rope 76 and the pull ring 77 to reset.

[0037] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. An underwater life-saving device for fire rescue, characterized in that: The invention comprises an arc panel (1), one end of which is fixedly connected to a soft belt 1 (21), the other end of which is fixedly connected to a soft belt 2 (22), one side surface of which is fixedly connected to a Velcro hook surface (31), and one side surface of which is fixedly connected to a Velcro fleece surface (32). A floating mechanism is arranged on one side of the arc panel (1), the floating mechanism is used to assist firefighters to float and sink in water, and a water supply and drainage mechanism is arranged on the floating mechanism, the water supply and drainage mechanism is used to inject or discharge water into or from the floating mechanism.

2. An underwater life-saving device for firefighting and rescue according to claim 1, characterized in that: The floating mechanism comprises a fixed beam (41), the fixed beam (41) is fixedly connected to one side of the curved panel (1), a plurality of buoyancy tanks (42) are fixedly connected to the fixed beam (41), the buoyancy tanks (42) are hollow structures, two fan-shaped holes are opened on the upper part of the buoyancy tanks (42), a plurality of anti-slip strips (43) are fixedly connected to the inner side wall of the soft belt 1 (21) and the soft belt 2 (22) close to the curved panel (1), and a plurality of soft pads (44) are fixedly connected to the side of the curved panel (1) away from the fixed beam (41).

3. An underwater life-saving device for fire rescue according to claim 2, characterized in that: The water supply and drainage mechanism comprises a floating plate (51), a two-way air pump (52) is fixedly connected to the floating plate (51), a connecting pipe rack (53) is fixedly connected between the upper parts of a plurality of the buoyancy tanks (42), the interior of the connecting pipe rack (53) is connected with the interior of a plurality of the buoyancy tanks (42), a connecting long pipe (54) is connected between the lower part of the two-way air pump (52) and the connecting pipe rack (53), and a switch button (55) is fixedly connected on one side of the arc panel (1) close to the fixed beam (41), and the switch button (55) is used to control the working state of the two-way air pump (52).

4. The underwater life-saving device for fire rescue according to claim 3 is characterized in that: The air leakage prevention mechanism is also included. The air leakage prevention mechanism is arranged at the lower part of the plurality of buoyancy tanks (42). The air leakage prevention mechanism is used to prevent the air filled in the buoyancy tanks (42) from escaping. The air leakage prevention mechanism includes a plurality of connecting pipes (61). The plurality of connecting pipes (61) are respectively fixedly connected to the lower part of the plurality of buoyancy tanks (42). The plurality of connecting pipes (61) are all fixedly connected to the lower part of a pull-down hose (62). The interior of the pull-down hose (62) is connected to the interior of the connecting pipe (61) and the buoyancy tank (42). The force tank (42) is internally connected, and each pull-down hose (62) is rotatably connected to a rotating ring (63) at its lower portion, and each of the rotating rings (63) is rotatably connected to swing rods (64) on both sides, and each of the swing rods (64) is fixedly connected to a lead sinker (65) at its lower end, and each of the connecting pipes (61) is rotatably connected to a ball valve (66), and each of the ball valves (66) is rotatably connected to gravity rods (67) on both sides, and each of the pull-down hoses (62) is fixedly connected to a blocking net (68) at its lower end.

5. An underwater life-saving device for fire rescue according to claim 4, characterized in that: The invention also includes a fast diving mechanism, which is arranged on the fixed beam (41). The fast diving mechanism is used to open the buoyancy tank (42) so that the buoyancy tank (42) can quickly take in water so as to sink. The fast diving mechanism includes a plurality of rotating disks (71), three of which form a group. The plurality of rotating disks (71) are respectively rotatably connected to the upper parts of the plurality of buoyancy tanks (42). The side of the rotating disk (71) is provided with a groove. 1) is connected to the buoyancy tank (42) with a torsion spring (72), the upper parts of the plurality of rotating disks (71) are fixedly connected to perforated sheets (73), the perforated sheets (73) are provided with two communicating holes, three perforated sheets (73) form a group, the perforated sheets (73) are in contact with the upper surface of the buoyancy tank (42), the fixed beam (41) is fixedly connected to two guide columns (74), the guide columns (74) are provided with three guide grooves, the fixed beam (4 1) Two multi-tube guide frames (75) are fixedly connected to one side, and three through holes are formed on the multi-tube guide frame (75). A connecting rope (76) is connected to each of the three rotating disks (71) in each group, and a part of the connecting rope (76) is wound in a groove on the side of the rotating disk (71). The three connecting ropes (76) connected to the three rotating disks (71) in the same group all bypass one of the guide columns (74), and the three connecting ropes (76) are respectively located in the guide groove on the guide column (74). The three connecting ropes (76) connected to the three rotating disks (71) in the same group all pass through one of the multi-tube guide frames (75), and the three connecting ropes (76) respectively pass through the through holes on the multi-tube guide frame (75). A pull ring (77) is fixedly connected between the three connecting ropes (76) connected to the three rotating disks (71) in the same group, and the pull ring (77) contacts one side of the multi-tube guide frame (75).

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