Helicopter underwater escape rolling training device

Abstract

The invention relates to the technical field of training equipment, and discloses a helicopter underwater escape rolling training device which comprises a training body and a buoyancy component arranged on the side wall of the training body, and the training body comprises a sinking body, an impact component arranged in the sinking body and a rotating part arranged at one end of the sinking body. The upper floating body is arranged at the end, away from the sinking body, of the rotating part, the limiting part is arranged at the end, away from the sinking body, of the rotating part and used for driving the impact part, and the training body rotates under the action of the buoyancy part, so that the limiting part relieves limiting of the upper floating body and the sinking body, and the sinking body rotates around the hinged position of the sinking body and the upper floating body; the helicopter body fracture scene caused by the fact that the helicopter body touches reefs is simulated, a trigger plate is pulled through a linkage rod, a guide rod jacks a seat, the vibration effect on trainees is achieved, the sense of reality of training is improved, the stress response of the trainees is stimulated, the training effect is improved, the self-rescue and escape skills of the trainees are improved, and the helicopter crash accident casualty rate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of training equipment, in particular to a helicopter underwater escape roll training device. Background Art

[0002] The helicopter underwater escape roll training device is an important training equipment. By simulating the escape process in real situations, it helps pilots and crew members improve their self-rescue capabilities and reduce the casualty rate in helicopter accidents.

[0003] The patent with patent publication number CN216352876U discloses an underwater escape simulator and an underwater escape simulation component, which work together through a pneumatic flip part and a buoyancy cabin so that the main body rotates due to buoyancy. By controlling the supply and cutoff of compressed air, the pneumatic flip part can achieve the function of braking at any position, simulating different flipping and dumping conditions of a helicopter underwater, so as to better complete the training of relevant personnel.

[0004] Due to the complex environment under the water where the helicopter crashed, after the helicopter fell into the water, the helicopter body would collide with the reef under the location, causing the helicopter body to break. Therefore, the above-mentioned main body training only rotates under the action of buoyancy, and the training method is single, so that the trainees cannot quickly save themselves when facing the body breakage, resulting in an increase in the accident casualties;

[0005] In addition, before the helicopter crashed into the water, it was in a high-speed flight state, so after the helicopter came into contact with the water, the acceleration of the helicopter was rapidly reduced due to the resistance of the water. Therefore, the people in the helicopter cabin would feel the shock of the shock, while the main body mentioned above was directly immersed in the water, so that the main body and the trainees inside the main body had no obvious sense of crashing. Therefore, the simulation training had poor realism and poor training effect, resulting in the trainees being unable to receive effective underwater self-rescue and escape skills training. Summary of the invention

[0006] The purpose of the present invention is to provide a helicopter underwater escape roll training device to solve the problems mentioned in the above process.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a helicopter underwater escape roll training device comprises a training body and a plurality of seats arranged in the training body, a buoyancy component arranged on the side wall of the training body, the training body comprises a sinking body, the plurality of seats are arranged in the sinking body, an impact component is arranged in the sinking body, a rotating part is arranged at one end of the sinking body, an upper floating body is arranged at an end of the rotating part away from the sinking body, and an end of the upper floating body close to the sinking body is hingedly matched with an end of the rotating part away from the sinking body, a limiting component for driving the impact component is arranged at an end of the rotating part away from the sinking body, and the limiting component is used to prevent the upper floating body and the sinking body from approaching each other at the hinged joint and pinching the trainee;

[0008] A slide groove is arranged on the outside of the rotating part, a slider is arranged in the slide groove, a mounting plate is arranged on the end of the slider away from the slide groove, vertical plates are arranged on both sides of the mounting plate away from the slider, a cylinder is arranged on the side where the two vertical plates are close to each other, the cylinder piston end passes through the mounting plate, and a brake block is arranged on the cylinder piston end.

[0009] As a preferred solution of the helicopter underwater escape roll training device of the present invention, the buoyancy component includes an air cylinder, which is arranged in the middle area of ​​the outer side wall of the sinking body, and an air collecting hood arranged in the air cylinder, the air collecting hood is a funnel-shaped structure, and an exhaust valve is arranged at one end of the air collecting hood, and the exhaust valve is arranged at the end of the air collecting hood where the gas flow area gradually decreases.

[0010] As a preferred solution of the helicopter underwater escape roll training device described in the present invention, the buoyancy component further includes a drainage cylinder, which is provided with drainage holes in an array on four sides, and is arranged in the middle area of ​​the outer side wall of the upper floating body, and the drainage cylinder and the air collecting cylinder are arranged on the same side of the training body.

[0011] As a preferred solution of the helicopter underwater escape roll training device of the present invention, the airbag is arranged in the drainage tube, and an air guide tube is arranged at one end of the airbag, and the end of the air guide tube away from the airbag is connected to the exhaust valve.

[0012] As a preferred solution of the helicopter underwater escape roll training device described in the present invention, the limiting component includes a movable groove arranged at one end of the sinking body close to the rotating part, and the movable groove passes through the rotating part, a movable block arranged in the movable groove, an array of ratchets arranged on the side of the movable block away from the inner cavity of the sinking body, a connecting rod arranged at one end of the movable block away from the movable groove, and the end of the connecting rod away from the movable block is hingedly matched with an end of the floating body close to the sinking body.

[0013] As a preferred solution of the helicopter underwater escape roll training device of the present invention, it comprises: an elastic groove arranged in the movable groove, the elastic groove passes through the rotating part, an elastic sheet arranged in the elastic groove, a raised part arranged in the middle area of ​​the elastic sheet, and the raised part extends to the outside of the rotating part.

[0014] As a preferred solution of the helicopter underwater escape roll training device of the present invention, it comprises: a movable plate arranged on the side of the raised portion close to the movable groove, mounting seats arranged in an array on both sides of the side of the movable plate close to the movable groove, a hinged rod arranged on the mounting seat, a limit plate arranged in an array on the side of the movable plate close to the movable groove and located on one side of the hinged rod, movable teeth arranged on the hinged rod, torsion springs arranged on both sides of the hinged rod, and the tooth deflection directions of the ratchet and the movable teeth are opposite.

[0015] As a preferred solution of the helicopter underwater escape roll training device of the present invention, the impact component includes a bottom plate arranged in the sinking body, a base arranged at the lower ends of several seats, a guide rod arranged in the middle area of ​​one end of several seats close to the base, the guide rod passes through the bottom plate, and a pulley is arranged at the end of the guide rod away from the seat.

[0016] As a preferred solution of the helicopter underwater escape roll training device described in the present invention, it comprises: guide grooves arranged at the four corners of the base, a plurality of support rods arranged on the bottom plate close to the seat side, the support rods are inserted into the guide grooves, the bottom plate is arranged on the inner side wall of the sinker, and the bottom plate is close to the side of the air collecting cylinder, a retaining ring is arranged on one end of the guide rod close to the pulley, and a spring is arranged on the outside of the guide rod, and the spring is located between the retaining ring and the bottom plate.

[0017] As a preferred solution of the helicopter underwater escape roll training device of the present invention, the impact component also includes slides arranged on both sides of the inner side wall of the sinking body and close to one end of the gas collecting cylinder, a trigger plate arranged on the slide, a corrugated portion arranged on the trigger plate, a linkage rod arranged on the trigger plate close to one end of the upper floating body, and the end of the linkage rod away from the trigger plate is connected to a side of the moving block away from the ratchet.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By retracting the piston end of the cylinder, the training body rotates under the action of the buoyancy component, so that the limiting component releases the limit of the upper floating body and the lower sinking body, so that the lower sinking body rotates around the hinge between it and the upper floating body, thereby simulating the fuselage fracture scene caused by the helicopter body hitting a reef;

[0020] 2. Pull the trigger plate through the linkage rod to make the pulley roll along the corrugated part, so that the guide rod lifts the seat, which has a shock effect on the trainees, thereby improving the realism of the simulation training, stimulating the stress response of the trainees, thereby improving the training effect, further improving the self-rescue and escape skills of the trainees, and reducing the casualty rate of helicopter crash accidents;

[0021] 3. The gas in the gas collecting cylinder is introduced into the airbag under the action of water pressure through the air collecting hood, so that after the training body is turned over, the upper floating body floats on the water surface due to the buoyancy of the airbag, and the lower sinking body is immersed in the water due to the lack of buoyancy of the airbag. As a result, when the training body is placed in the water, the training body is in a tilted state as a whole, thereby simulating the self-rescue of personnel when the helicopter body is in a tilted state in the water, improving the training effect and the escape skills of the trainees, and reducing the casualty rate of helicopter crash accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the overall structure of the helicopter underwater escape tumbling training device of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the helicopter underwater escape roll training device of the present invention in a working state.

[0024] Figure 3 The figure is a schematic diagram of the structure of the helicopter underwater escape roll training device from a top view of the present invention.

[0025] Figure 4 It is a structural schematic diagram of the sinking body of the helicopter underwater escape tumbling training device of the present invention.

[0026] Figure 5 The helicopter underwater escape roll training device of the present invention Figure 4Schematic diagram of the structure enlarged at point A in the middle.

[0027] Figure 6 The helicopter underwater escape roll training device of the present invention Figure 5 Schematic diagram of the enlarged structure at point B.

[0028] Figure 7 The present invention is a schematic structural diagram of a movable plate of a helicopter underwater escape tumbling training device.

[0029] Figure 8 The helicopter underwater escape roll training device of the present invention Figure 7 Schematic diagram of the enlarged structure at point C in the middle.

[0030] Fig. 9 It is a structural schematic diagram of a half-section view of the sinking body of the helicopter underwater escape tumbling training device of the present invention.

[0031] Fig.10 The helicopter underwater escape roll training device of the present invention Fig. 9 Schematic diagram of the structure enlarged at point D in the middle.

[0032] Fig.11 The helicopter underwater escape roll training device of the present invention Fig. 9 Schematic diagram of the enlarged structure at point E in the middle.

[0033] In the figure:

[0034] 1. Sinking body; 11. Rotating part; 12. Floating body; 13. Slide; 14. Mounting plate; 15. Brake block;

[0035] 2. Buoyancy component; 21. Air collecting cylinder; 22. Air collecting cover; 23. Exhaust valve; 24. Drain cylinder; 25. Air bag; 26. Air guide tube;

[0036] 3. Impact component; 31. Bottom plate; 32. Base; 33. Guide rod; 34. Pulley; 35. Spring; 36. Trigger plate; 37. Corrugated part; 38. Linkage rod;

[0037] 4. Limiting component; 41. Moving groove; 42. Moving block; 43. Ratchet; 44. Connecting rod; 45. Elastic groove; 46. Elastic sheet; 461. Protrusion; 47. Movable plate; 471. Limiting plate; 472. Movable tooth. DETAILED DESCRIPTION

[0038] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is by no means limited to any specific configuration and algorithm proposed below, but covers any modification, replacement and improvement of elements, parts and algorithms without departing from the spirit of the present invention. In the accompanying drawings and the following description, known structures and technologies are not shown to avoid unnecessary ambiguity to the present invention.

[0039] Example 1

[0040] Reference Figure 1-5 , which is the first embodiment of the present invention, provides a helicopter underwater escape tumbling training device, the helicopter underwater escape tumbling training device comprises a training body and a plurality of seats arranged in the training body, a buoyancy component 2 arranged on the side wall of the training body, the training body comprises a sinking body 1, a plurality of seats arranged in the sinking body 1, an impact component 3 arranged in the sinking body 1, a rotating part 11 arranged at one end of the sinking body 1, an upper floating body 12 arranged at an end of the rotating part 11 away from the sinking body 1, and an end of the upper floating body 12 close to the sinking body 1 is hingedly matched with an end of the rotating part 11 away from the sinking body 1, a limiting component 4 arranged at the end of the rotating part 11 away from the sinking body 1 for driving the impact component 3, and the limiting component 4 is used to prevent the upper floating body 12 and the sinking body 1 from approaching each other at the hinged joint and pinching the trainee;

[0041] A slide groove 13 is arranged on the outside of the rotating part 11, a slider is arranged in the slide groove 13, the slider is slidably arranged in the slide groove 13, a mounting plate 14 is arranged at the end of the slider away from the slide groove 13, vertical plates are arranged on both sides of the side of the mounting plate 14 away from the slider, a cylinder is arranged on the side of the two vertical plates close to each other, the cylinder piston end passes through the mounting plate 14, a brake block 15 is arranged on the cylinder piston end, a top plate is fixedly installed at one end of the vertical plate away from the mounting plate 14, and a lifting ring is arranged in the middle area of ​​one side of the top plate away from the mounting plate 14.

[0042] The buoyancy component 2 includes an air collecting cylinder 21, which is arranged in the middle area of ​​the outer side wall of the sinking body 1, an air collecting hood 22 arranged in the air collecting cylinder 21, and the air collecting hood 22 is a funnel-shaped structure. An exhaust valve 23 is arranged at one end of the air collecting hood 22, and the exhaust valve 23 is arranged at one end of the air collecting hood 22 along which the gas flow area gradually decreases. The buoyancy component 2 also includes a drainage cylinder 24, and the drainage cylinder 24 is arranged with drainage holes in an array on all four sides. The drainage cylinder 24 is arranged in the middle area of ​​the outer side wall of the upper floating body 12, and the drainage cylinder 24 and the air collecting cylinder 21 are arranged on the same side of the training body, and an air bag 25 is arranged in the drainage cylinder 24, and an air guide tube 26 is fixedly installed at one end of the air bag 25, and the air guide tube is connected to the inside of the air bag 25, and the air guide tube is connected to the inside of the air bag 25. One end of the tube 26 away from the air bag 25 is connected to the exhaust valve 23. A one-way valve is provided in the middle of the air guide tube 26 to prevent the gas entering the air bag 25 from leaking out after the training body is turned over. The exhaust valve 23 controls the opening and closing of the valve through the buoyancy change of the internal float or float. When gas is generated or enters the system, the float or float rises due to buoyancy and opens the exhaust port; when the system is full of liquid, the float or float drops and closes the exhaust port, that is, when there is no water but only gas, the exhaust port will automatically open, so that the gas is introduced into the air bag 25 through the exhaust valve 23. When all the gas in the drainage tube 24 enters the air bag 25, the exhaust valve 23 will automatically close to prevent water from entering the air bag 25 through the air guide tube 26.

[0043] During use, first use the hook to hook the lifting ring, then use the crane to lift the training body, then the trainee can enter the training body, when the trainee sits on the seat in the sinking body 1 and wears the safety belt, the training device is moved to the upper end of the water body by the crane, and then the crane starts to drive the training body to descend, so that the training body gradually contacts the water body;

[0044] When the gas cylinder 21 contacts the water body, the gas in the gas cylinder 21 will be squeezed into the air pipe 26 through the exhaust valve 23 under the action of water pressure, and finally the gas will be guided into the air bag 25 through the air pipe 26. At this time, the air bag 25 will be filled with gas and gradually expand. When the gas in the gas cylinder 21 is introduced into the air bag 25, the water body will contact the exhaust valve 23, and then the exhaust port of the exhaust valve 23 at the water body will automatically close to prevent the water from entering the air pipe 26 through the exhaust valve 23.

[0045] At this time, the cylinder piston end is in an extended state, and the cylinder piston end is controlled to retract, and then the brake block 15 will be separated from the rotating part 11. At this time, under the action of the buoyancy of the airbag 25, the slider will slide along the slide groove 13, and the training body will flip over, and the airbag 25 will flip to the water surface.

[0046] Example 2

[0047] Reference Figure 4-10, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that:

[0048] The limiting component 4 includes a movable groove 41 arranged at one end of the sinking body 1 close to the rotating part 11, and the movable groove 41 passes through the rotating part 11, a movable block 42 is slidably arranged in the movable groove 41, and an array of ratchet teeth 43 are arranged on the side of the movable block 42 away from the inner cavity of the sinking body 1, and a connecting rod 44 is hingedly arranged at one end of the movable block 42 away from the movable groove 41, and the end of the connecting rod 44 away from the movable block 42 is hingedly matched with the end of the upper floating body 12 close to the sinking body 1, an elastic groove 45 is arranged in the movable groove 41, the elastic groove 45 passes through the rotating part 11, an elastic sheet 46 is arranged in the elastic groove 45, and a protrusion 461 is arranged in the middle area of ​​the elastic sheet 46, and the protrusion 461 extends to the outside of the rotating part 11, and the protrusion 461 is located at the lower end of the brake block 15.

[0049] A movable plate 47 is arranged on the side of the raised portion 461 close to the movable groove 41, mounting seats are arranged in an array on both sides of the side of the movable plate 47 close to the movable groove 41, a hinged rod is arranged on the mounting seat, a limit plate 471 is arranged in an array on the side of the movable plate 47 close to the movable groove 41 and located on one side of the hinged rod, a movable tooth 472 is arranged on the hinged rod, and a torsion spring is arranged on both sides of the hinged rod, one end of the torsion spring is fixedly connected to the mounting seat, and the other end of the torsion spring away from the mounting seat is connected to the movable tooth 472, the tooth deflection direction of the ratchet 43 is opposite to that of the movable tooth 472, and the brake block 15 is controlled to contact with the raised portion 461 and the rotating portion 11 through the extension and contraction of the cylinder piston end, thereby controlling the engagement between the movable tooth 472 and the ratchet 43.

[0050] During use, when the cylinder piston end is retracted, the training body turns over under the buoyancy of the airbag 25, and the upper floating body 12 floats on the water surface under the buoyancy of the airbag 25, while the sinking body 1 rotates around the hinge of one end with the upper floating body 12 under the action of gravity. Then, the sinking body 1 will pull the moving block 42 along the moving groove 41 toward one end of the sinking body 1 through the connecting rod 44 to slide toward one end of the sinking body 1. At this time, the training body will simulate the scene of a helicopter fuselage breaking;

[0051] Then, after the training body is completely flipped over, the cylinder piston end will extend again, and the brake block 15 will contact the rotating part 11 to fix the training body. At the same time, the brake block 15 will press down the protrusion 461, causing the elastic sheet 46 to compress and deform and drive the movable plate to gradually approach the moving block 42. At this time, under the action of the limit plate 471 and the torsion spring, the movable tooth 472 will engage with the ratchet 43, so that the moving block 42 is limited and fixed at this time. At this time, the angle between the upper floating body 12 and the lower sinking body 1 will not decrease, thereby preventing the upper floating body 12 and the lower sinking body 1 from approaching each other under the action of the buoyancy of the water body, causing the trainee to be pinched.

[0052] The remaining structures are the same as those of Example 1.

[0053] Example 3

[0054] Reference Figure 1-11 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that:

[0055] The impact component 3 includes a bottom plate 31 arranged in the sinking body 1, a base 32 arranged at the lower ends of the plurality of seats, a guide rod 33 arranged at the middle area of ​​one end of the plurality of seats near the base 32, the guide rod 33 passes through the bottom plate 31, a pulley 34 arranged at the end of the guide rod 33 away from the seat, guide grooves arranged at the four corners of the base 32, a plurality of support rods arranged on one side of the bottom plate 31 close to the seat, the support rods are inserted in the guide grooves, and the support rods are used to support the seat, the bottom plate 31 is arranged on the inner side wall of the sinking body 1, and the bottom plate 31 is close to the side of the air collecting cylinder 21, a retaining ring is arranged at one end of the guide rod 33 close to the pulley 34, and a spring 35 is arranged on the outside of the guide rod 33, the spring 35 is located between the retaining ring and the bottom plate 31, and the seat is pulled by the guide rod 33 through the spring 35, so that the seat always has the momentum to approach the bottom plate 31, thereby preventing the seat and the trainee sitting on the seat from falling after the training body is flipped over, and the inverted trainee is prevented from being injured during training.

[0056] The impact component 3 also includes a slide arranged on both sides of the inner side wall of the sinking body 1 and close to one end of the gas collecting cylinder 21, a trigger plate 36 arranged on the slide, a corrugated portion 37 arranged on the trigger plate 36, and a linkage rod 38 arranged on the end of the trigger plate 36 close to the upper floating body 12, and the end of the linkage rod 38 away from the trigger plate 36 is connected to a side of the moving block 42 away from the ratchet 43.

[0057] During use, after the training body is turned over, the connecting rod 44 pulls the moving block 42 to move along the moving groove 41, and at this time, the linkage rod 38 will be pulled by the moving block 42, and the trigger plate 36 is pulled by the linkage rod 38 to move linearly along the slide toward the upper floating body 12, so that the pulley 34 slides along the corrugated portion 37, and the seat and the trainee sitting on the seat are intermittently pushed by the guide rod 33, so as to simulate the shock impact felt by the people inside the cabin when the helicopter crashes;

[0058] At this time, the cylinder piston end extends out, so that the brake block 15 contacts the rotating part 11 and the raised part 461 of the elastic sheet 46, so that the training body and the moving block 42 are fixed. At this time, the trainee can start to unfasten the safety belt and then start to escape. After the trainee has completed all the training, the cylinder piston end is controlled to retract, and the training body is hoisted by the crane. Since one end of the drainage cylinder 24 and the air collecting cylinder 21 is heavier than the other end, when the crane hoists the training body, the training device flips over under the action of its own gravity and resets to the initial state, and then the upper floating body 12 and the lower floating body 12 are retracted. The hinge of the sinking body 1 will flip to the end close to the lifting ring. At this time, under the action of gravity, the upper floating body 12 and the lower sinking body 1 will rotate around the hinge between them and the lower sinking body 1 as the axis, and dock with the lower sinking body 1, so that the training body is transformed from a broken state into a whole. Then the cylinder piston end is controlled to extend. At this time, the brake block 15 will fix the training body and no longer flip it. At the same time, the raised portion 461 of the elastic sheet 46 will be compressed and push the movable plate 47 to approach the moving block 42, so that the ratchet 43 and the movable tooth 472 are engaged. At this time, the next group of escape training can be carried out.

[0059] The remaining structure is the same as that of Example 2.

[0060] Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Based on the study of the drawings, the specification and the claims, those skilled in the art should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other devices or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to indicate names rather than to indicate any specific order. Any figure marks in the claims should not be construed as limiting the scope of protection. The functions of multiple parts appearing in the claims can be implemented by a single hardware or software module. The fact that certain technical features appear in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A helicopter underwater escape roll training device, comprising a training body and a plurality of seats arranged in the training body, characterized in that: a buoyancy component (2) arranged on the side wall of the training body, the training body comprising a sinking body (1), a plurality of seats arranged in the sinking body (1), an impact component (3) arranged in the sinking body (1), a rotating part (11) arranged at one end of the sinking body (1), an upper floating body (12) arranged at an end of the rotating part (11) away from the sinking body (1), and an end of the upper floating body (12) close to the sinking body (1) is hingedly matched with an end of the rotating part (11) away from the sinking body (1), and a limiting component (4) arranged at an end of the rotating part (11) away from the sinking body (1) for driving the impact component (3), the limiting component (4) being used to prevent the upper floating body (12) and the sinking body (1) from approaching each other at the hinged joint and thereby pinching and injuring the trainee; A slide groove (13) is arranged on the outside of the rotating part (11), a slider is arranged in the slide groove (13), a mounting plate (14) is arranged at one end of the slider away from the slide groove (13), vertical plates are arranged on both sides of the mounting plate (14) away from the slider, a cylinder is arranged on the side where the two vertical plates are close to each other, the piston end of the cylinder passes through the mounting plate (14), and a brake block (15) is arranged on the piston end of the cylinder.

2. A helicopter underwater escape roll training device according to claim 1, characterized in that: The buoyancy component (2) comprises a gas collecting cylinder (21), the gas collecting cylinder (21) being arranged in the middle area of ​​the outer side wall of the sinking body (1), a gas collecting hood (22) being arranged in the gas collecting cylinder (21), the gas collecting hood (22) being in a funnel-shaped structure, and an exhaust valve (23) being arranged at one end of the gas collecting hood (22), the exhaust valve (23) being arranged at one end of the gas collecting hood (22) where the gas flow area gradually decreases.

3. A helicopter underwater escape roll training device according to claim 2, characterized in that: The buoyancy component (2) further comprises a drainage cylinder (24), wherein the drainage cylinder (24) is provided with drainage holes in an array on four sides, the drainage cylinder (24) is arranged in the middle area of ​​the outer side wall of the upper floating body (12), and the drainage cylinder (24) and the air collecting cylinder (21) are arranged on the same side of the training body.

4. The helicopter underwater escape roll training device according to claim 3 is characterized by: An air bag (25) is arranged in the drainage cylinder (24), and an air guide tube (26) is arranged at one end of the air bag (25). The end of the air guide tube (26) away from the air bag (25) is connected to the exhaust valve (23).

5. The helicopter underwater escape roll training device according to claim 1, characterized in that: The limiting component (4) includes a movable groove (41) arranged at one end of the sinking body (1) close to the rotating part (11), and the movable groove (41) passes through the rotating part (11), a movable block (42) arranged in the movable groove (41), an array of ratchets (43) arranged on a side of the movable block (42) away from the inner cavity of the sinking body (1), and a connecting rod (44) arranged at one end of the movable block (42) away from the movable groove (41), and the end of the connecting rod (44) away from the movable block (42) is hingedly matched with an end of the floating body (12) close to the sinking body (1).

6. A helicopter underwater escape roll training device according to claim 5, characterized in that: An elastic groove (45) is arranged in the movable groove (41), the elastic groove (45) passes through the rotating part (11), an elastic sheet (46) is arranged in the elastic groove (45), and a raised portion (461) is arranged in the middle area of ​​the elastic sheet (46), and the raised portion (461) extends to the outside of the rotating part (11).

7. A helicopter underwater escape roll training device according to claim 6, characterized in that: A movable plate (47) is arranged on the side of the protruding portion (461) close to the movable groove (41); mounting seats arranged in an array on both sides of the side of the movable plate (47) close to the movable groove (41); a hinge rod is arranged on the mounting seat; a limit plate (471) is arranged in an array on the side of the movable plate (47) close to the movable groove (41) and located on one side of the hinge rod; movable teeth (472) are arranged on the hinge rod; torsion springs are arranged on both sides of the hinge rod; and the tooth deflection directions of the ratchet (43) and the movable teeth (472) are opposite.

8. The helicopter underwater escape roll training device according to claim 1, characterized in that: The impact component (3) includes a bottom plate (31) arranged in the sinking body (1), a base (32) arranged at the lower end of the plurality of seats, a guide rod (33) arranged in the middle area of ​​one end of the plurality of seats close to the base (32), the guide rod (33) passing through the bottom plate (31), and a pulley (34) arranged at the end of the guide rod (33) away from the seat.

9. The helicopter underwater escape roll training device according to claim 8, characterized in that: Guide grooves are arranged at the four corners of the base (32); a plurality of support rods are arranged on the bottom plate (31) near one side of the seat, the support rods are inserted into the guide grooves; the bottom plate (31) is arranged on the inner side wall of the sinking body (1), and the bottom plate (31) is close to the side of the gas collecting cylinder (21); a retaining ring is arranged on one end of the guide rod (33) near the pulley (34); a spring (35) is arranged on the outside of the guide rod (33), and the spring (35) is located between the retaining ring and the bottom plate (31).

10. The helicopter underwater escape roll training device according to claim 5, characterized in that: The impact component (3) also includes a slide arranged on both sides of the inner side wall of the sinking body (1) and close to one end of the gas collecting cylinder (21), a trigger plate (36) arranged on the slide, a corrugated portion (37) arranged on the trigger plate (36), and a linkage rod (38) arranged on one end of the trigger plate (36) close to the upper floating body (12), and one end of the linkage rod (38) away from the trigger plate (36) is connected to a side of the moving block (42) away from the ratchet (43).

Images