Emergency rescue air-cushion vehicle and air-cushion ladder for flood disaster

Abstract

The present invention provides an emergency rescue hovercraft and an air cushion ladder for flood disasters, relating to the field of flood disaster rescue. Rotating door panels are movably hinged on both sides of the hovercraft body of the present invention. The telescopic ladder is installed on the inner side wall of the rotating door panel. An airbag is fixedly installed at the bottom of the telescopic ladder. Both ends of the airbag are fixedly connected with air ducts. Intake valves and exhaust valves are respectively fixedly installed at the ends of the two groups of air ducts. The intake valve is connected with an intake fan. One end of the telescopic ladder is rotatably connected with a wire winding roller. A connecting rope is wound inside the wire winding roller. The end of the connecting rope is fixedly connected with the other end of the telescopic ladder. In the present invention, the telescopic ladder floats on the water surface under the action of the airbag, facilitating rescue personnel to quickly reach the telescopic ladder for climbing, and at the same time facilitating the rapid extension and contraction of the telescopic ladder.

Description

Technical Field

[0001] The present invention relates to the technical field of flood disaster rescue, and particularly relates to an emergency rescue hovercraft for flood disasters and an air cushion ladder thereof. Background Art

[0002] During actual rescue operations, due to the complex terrain and varying depths in flood areas, hovercrafts are usually used for rescue. However, when traditional hovercrafts are used for rescue, due to the structural characteristics of the rescue vessels themselves, their surfaces are very smooth and they are at a relatively high distance from the water surface. Therefore, it is very inconvenient to climb. Usually, a climbing ladder is hung on the side for climbing. However, the climbing ladder is generally made of metal. When placed in water, its end naturally hangs into the water, making it difficult for the rescued person to quickly reach the climbing ladder, affecting the actual rescue speed. Moreover, the climbing ladder must be retracted when the hovercraft is moving, otherwise it is easy to scrape against the outside. However, the extension and contraction are rather troublesome, affecting subsequent rescue work. Therefore, there is a need to provide an emergency rescue hovercraft for flood disasters and an air cushion ladder thereof to solve the above problems. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the present invention provides an emergency rescue hovercraft for flood disasters and an air cushion ladder thereof, which solves the problems that the climbing ladder of the existing hovercraft is not convenient to use and its extension and contraction are inconvenient.

[0005] (2) Technical Solutions

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] An emergency rescue hovercraft for flood disasters and an air cushion ladder thereof, including a hovercraft main body. An exhaust air cushion is fixedly installed at the bottom of the hovercraft main body. An intake air blower is fixedly installed at the end of the top of the hovercraft main body. Upper and lower channels are opened on both sides of the hovercraft main body. A rotating door panel is movably hinged inside the upper and lower channels;

[0008] A telescopic ladder is installed on the inner side wall of the rotating door panel. An airbag is fixedly installed at the bottom of the telescopic ladder. Both ends of the airbag are fixedly connected with air ducts. Intake valves and exhaust valves are respectively fixedly installed at the ends of the two air ducts. The intake valve is connected to the intake air blower. One end of the telescopic ladder is rotatably connected with a winding roller. A connecting rope is wound inside the winding roller. The end of the connecting rope is fixedly connected with the other end of the telescopic ladder.

[0009] Preferably, the telescopic ladder includes a first N-shaped connecting frame, a second N-shaped connecting frame, and a third N-shaped connecting frame. The second N-shaped connecting frame is movably inserted into the first N-shaped connecting frame, and the third N-shaped connecting frame is movably inserted into the second N-shaped connecting frame.

[0010] Preferably, the first N-shaped connecting frame is rotatably connected to the inner side wall of the rotating door panel. A fixed shaft is fixedly connected inside the first N-shaped connecting frame. The winding roller is rotatably connected to the outer surface of the fixed shaft. A torsion spring is provided between the winding roller and the fixed shaft. Connecting holes are provided at the ends of the first N-shaped connecting frame and the second N-shaped connecting frame. The connecting rope passes through the connecting holes, and the end of the connecting rope is fixedly connected to the end of the third N-shaped connecting frame.

[0011] Preferably, fixing rings are fixedly connected to the lower surfaces of the ends of the first N-shaped connecting frame, the second N-shaped connecting frame, and the third N-shaped connecting frame. The airbag is fixedly installed inside the fixing ring. A connecting groove is provided on the inner side wall of the rotating door panel. The air duct is installed inside the connecting groove. The air inlet valve and the air outlet valve are respectively installed on both sides of the inner wall of the hovercraft body.

[0012] Preferably, an activity groove is provided at the top end of the third N-shaped connecting frame. A clamping component is provided inside the activity groove. A clamping groove is provided on the inner side wall of the rotating door panel. The clamping component is movably clamped inside the clamping groove.

[0013] Preferably, clamping holes are provided on both sides of the top end of the rotating door panel. A sliding groove is provided on the inner wall of the hovercraft body. A clamping rod is provided inside the sliding groove. The clamping rod is movably inserted into the clamping hole.

[0014] Preferably, the clamping component includes a dial block, a clamping block, a fixed rod, and a first spring. The fixed rod is fixedly connected inside the activity groove. The dial block is movably sleeved on the outer surfaces of both ends of the fixed rod. The first spring is movably sleeved on the outer surface of the middle part of the fixed rod. One end of the clamping block is fixedly connected to the dial block, and the other end of the clamping block is movably clamped with the clamping groove.

[0015] Preferably, a slider is fixedly connected to the end of the clamping rod. A second spring is provided on the other side of the slider. The slider and the second spring are both slidably connected inside the sliding groove.

[0016] Beneficial Effects

[0017] The present invention provides an emergency rescue hovercraft and an air cushion climbing ladder for flood disasters.

[0018] Compared with the prior art, the following beneficial effects are achieved:

[0019] 1. The emergency rescue hovercraft and its hover ladder for flood disasters open the rotating door panel outward and then rotate and expand the telescopic ladder outward. At this time, by opening the intake valve, the intake fan blows air into the airbag through the air duct. At this time, the airbag is expanded, causing the telescopic ladder to instantly extend. At the same time, the third N-shaped connecting frame drives the connecting rope to move forward, causing the wire winding roller to rotate clockwise. At this time, the coil spring is tightened. Then, the intake valve is closed. At this time, the telescopic ladder floats on the water surface under the action of the airbag, facilitating rescue personnel to quickly reach the telescopic ladder for climbing.

[0020] 2. The emergency rescue hovercraft and its hover ladder for flood disasters open the exhaust valve. At this time, pull the connecting rope back, causing the connecting rope to drive the telescopic ladder to contract. At the same time, the gas inside the airbag is discharged outward. At the same time, the coil spring unfolds and drives the wire winding roller to rotate in the reverse direction, winding the retracted connecting rope around the outer surface of the wire winding roller, thus facilitating the rapid recovery of the telescopic ladder.

[0021] 3. The emergency rescue hovercraft and its hover ladder for flood disasters flip the telescopic ladder back, causing the latch to completely enter the card slot, and the latch is engaged with the card slot to complete the fixation. Then, by pushing the slider to one side, the second spring is compressed, and at the same time, the latch rod retracts into the hovercraft main body. Then, rotate the rotating door panel upward. At this time, release the slider, and under the action of the second spring, the latch rod inserts into the card hole to fix the rotating door panel, facilitating the storage of the telescopic ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic front view of the whole of the present invention;

[0024] Figure 2 It is a schematic side view of the whole of the present invention;

[0025] Figure 3 It is a schematic view of the outer surface of the rotating door panel of the present invention;

[0026] Figure 4 It is a schematic view of the outer surface of the telescopic ladder of the present invention;

[0027] Figure 5 For the present invention Figure 3 Enlarged view of the structure of part B;

[0028] Figure 6 Schematic diagram of the snap - fit component structure of the present invention;

[0029] Figure 7 For the present invention Figure 2 Enlarged view of the structure of part A.

[0030] In the figure: 1, hovercraft main body; 2, exhaust cushion; 3, up - and - down channel; 4, telescopic ladder; 401, first N - shaped connecting frame; 402, second N - shaped connecting frame; 403, third N - shaped connecting frame; 5, rotating door panel; 6, intake fan; 7, card slot; 8, airbag; 9, connecting groove; 10, air duct; 11, intake valve; 12, exhaust valve; 13, card hole; 14, fixed shaft; 15, winding roller; 16, connecting rope; 17, connecting hole; 18, fixed ring; 19, movable groove; 20, snap - fit component; 201, dialing block; 202, card block; 203, fixed rod; 204, first spring; 21, sliding groove; 22, slider; 23, card rod; 24, second spring. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0032] By providing an emergency rescue hovercraft for flood disasters and its hovercraft climbing ladder in the embodiments of the present application, the problems that the existing hovercraft climbing ladder is not convenient to use and its extension and contraction are inconvenient are solved, so that the hovercraft climbing ladder can be quickly extended and contracted, and it is convenient for the rescued person to quickly access the climbing ladder for climbing.

[0033] The general idea of the technical solutions in the embodiments of the present application to solve the above - mentioned technical problems is as follows:

[0034] By observing the use state of the existing hovercraft during rescue, it is found that its climbing ladder is generally made of metal. When placed in water, its end naturally hangs into the water, making it difficult for the rescued person to quickly access the climbing ladder, affecting the actual rescue speed. Moreover, the climbing ladder must be retracted when the hovercraft is traveling, otherwise it is easy to scrape against the outside. However, its extension and contraction are rather troublesome, affecting subsequent rescue work.

[0035] To better understand the above - mentioned technical solutions, the above - mentioned technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0036] Emergency rescue air cushion boat and its air cushion ladder for flood disasters, including the air cushion boat main body 1, an exhaust air cushion 2 is fixedly installed at the bottom of the air cushion boat main body 1, an intake fan 6 is fixedly installed at the top end of the air cushion boat main body 1, upper and lower channels 3 are opened on both sides of the air cushion boat main body 1, and a rotating door panel 5 is movably hinged inside the upper and lower channels 3;

[0037] At the same time, the device also includes a telescopic ladder 4, the telescopic ladder 4 is installed on the inner side wall of the rotating door panel 5, an air bag 8 is fixedly installed at the bottom of the telescopic ladder 4, both ends of the air bag 8 are fixedly connected with air guide pipes 10, intake valves 11 and exhaust valves 12 are respectively fixedly installed at the ends of the two groups of air guide pipes 10, the intake valve 11 is connected with the intake fan 6, one end of the telescopic ladder 4 is rotatably connected with a winding roller 15, a connecting rope 16 is wound inside the winding roller 15, and the end of the connecting rope 16 is fixedly connected with the other end of the telescopic ladder 4.

[0038] Refer to the appendix Figure 4 , the telescopic ladder 4 includes a first N-shaped connecting frame 401, a second N-shaped connecting frame 402 and a third N-shaped connecting frame 403, the second N-shaped connecting frame 402 is movably inserted inside the first N-shaped connecting frame 401, and the third N-shaped connecting frame 403 is movably inserted inside the second N-shaped connecting frame 402, which facilitates the telescopic ladder 4 to be retracted.

[0039] Refer to the appendix Figure 3-4 , the first N-shaped connecting frame 401 is rotatably connected to the inner side wall of the rotating door panel 5, a fixed shaft 14 is fixedly connected inside the first N-shaped connecting frame 401, the winding roller 15 is rotatably connected to the outer surface of the fixed shaft 14, a torsion spring is provided between the winding roller 15 and the fixed shaft 14, connection holes 17 are opened at the ends of the first N-shaped connecting frame 401 and the second N-shaped connecting frame 402, the connecting rope 16 passes through the connection holes 17, and the end of the connecting rope 16 is fixedly connected to the end of the third N-shaped connecting frame 403. Pull the connecting rope 16 back, so that the connecting rope 16 drives the telescopic ladder 4 to contract, and at the same time, the gas inside the air bag 8 is discharged outward. At the same time, the torsion spring unfolds and drives the winding roller 15 to rotate in the reverse direction, and winds the retracted connecting rope 16 on the outer surface of the winding roller 15, so as to facilitate the rapid recovery of the telescopic ladder 4.

[0040] Refer to the appendix Figure 4 , fixed rings 18 are fixedly connected to the lower surfaces of the ends of the first N-shaped connecting frame 401, the second N-shaped connecting frame 402 and the third N-shaped connecting frame 403, the air bag 8 is fixedly installed inside the fixed rings 18, a connection groove 9 is opened on the inner side wall of the rotating door panel 5, the air guide pipes 10 are installed inside the connection groove 9, and the intake valve 11 and the exhaust valve 12 are respectively installed on both sides of the inner wall of the air cushion boat main body 1, which facilitates the connection between the air bag 8 and the telescopic ladder 4.

[0041] Refer to the appendixFigure 3 , 5 、6. The top end of the third N-shaped connecting frame 403 is provided with a movable groove 19. A clamping component 20 is arranged inside the movable groove 19. A clamping groove 7 is arranged on the inner side wall of the rotating door panel 5. The clamping component 20 is movably clamped inside the clamping groove 7. The clamping component 20 includes a dial block 201, a clamping block 202, a fixing rod 203 and a first spring 204. The fixing rod 203 is fixedly connected inside the movable groove 19. The dial block 201 is movably sleeved on the outer surfaces of both ends of the fixing rod 203. The first spring 204 is movably sleeved on the outer surface of the middle part of the fixing rod 203. One end of the clamping block 202 is fixedly connected with the dial block 201. The other end of the clamping block 202 is movably clamped with the clamping groove 7. The top side surface of the clamping block 202 is an inclined triangular surface.

[0042] Refer to the appendix Figure 2 , 3 、7. Clamping holes 13 are arranged on both sides at the top end of the rotating door panel 5. A sliding groove 21 is arranged on the inner wall of the hovercraft main body 1. A clamping rod 23 is arranged inside the sliding groove 21. The clamping rod 23 is movably inserted into the clamping holes 13. A slider 22 is fixedly connected to the end of the clamping rod 23. A second spring 24 is arranged on the other side of the slider 22. The slider 22 and the second spring 24 are both slidably connected inside the sliding groove 21. By pushing the slider 22 to one side, the second spring 24 is compressed. At the same time, the clamping rod 23 retracts into the hovercraft main body 1. Then the rotating door panel 5 is rotated upward. At this time, the slider 22 is released. Under the action of the second spring 24, the clamping rod 23 is inserted into the clamping holes 13 to fix the rotating door panel 5, which is convenient for the telescopic ladder 4 to be stored.

[0043] The content of the present invention will be described in detail below in the form of embodiments in conjunction with the accompanying drawings;

[0044] Embodiment 1

[0045] Refer to the appendix Figure 1-7 , a rescue hovercraft for flood disasters and its hovercraft climbing ladder, including a hovercraft main body 1. An exhaust hovercraft 2 is fixedly installed at the bottom of the hovercraft main body 1. An intake fan 6 is fixedly installed at the top end of the hovercraft main body 1. Upper and lower channels 3 are arranged on both sides of the hovercraft main body 1. A rotating door panel 5 is movably hinged inside the upper and lower channels 3;

[0046] Telescopic ladder 4, the telescopic ladder 4 is installed on the inner wall of the rotating door panel 5, an air bag 8 is fixedly installed at the bottom of the telescopic ladder 4, both ends of the air bag 8 are fixedly connected with air guide tubes 10, the ends of the two groups of air guide tubes 10 are respectively fixedly installed with an intake valve 11 and an exhaust valve 12, the intake valve 11 is connected to the intake fan 6, one end of the telescopic ladder 4 is rotatably connected to a winding roller 15, a connecting rope 16 is wound inside the winding roller 15, and the end of the connecting rope 16 is fixedly connected to the other end of the telescopic ladder 4, the telescopic ladder 4 includes a first N-shaped connecting frame 401, a second N-shaped connecting frame 402 and a third N-shaped connecting frame 403, the second N-shaped connecting frame 402 is movably plugged into the inside of the first N-shaped connecting frame 401, and the third N-shaped connecting frame 403 is movably plugged into the inside of the second N-shaped connecting frame 402, The first N-shaped connecting frame 401 is rotatably connected to the inner wall of the rotating door panel 5, and a fixed shaft 14 is fixedly connected inside the first N-shaped connecting frame 401, and a winding roller 15 is rotatably connected to the outer surface of the fixed shaft 14, and a coil spring is provided between the winding roller 15 and the fixed shaft 14. The ends of the first N-shaped connecting frame 401 and the second N-shaped connecting frame 402 are provided with a connecting hole 17, and a connecting rope 16 passes through the connecting hole 17, and the end of the connecting rope 16 is fixedly connected to the end of the third N-shaped connecting frame 403. The lower surfaces of the ends of the first N-shaped connecting frame 401, the second N-shaped connecting frame 402 and the third N-shaped connecting frame 403 are all fixedly connected with a fixing ring 18, and the air bag 8 is fixedly installed inside the fixing ring 18. A connecting groove 9 is provided on the inner wall of the rotating door panel 5, and an air guide pipe 10 is installed inside the connecting groove 9. The air inlet valve 11 and the exhaust valve 12 are respectively installed on both sides of the inner wall of the air cushion craft body 1;

[0047] When the device is in use, when the telescopic ladder 4 is needed for rescue, the rotating door panel 5 is rotated outward to open it, and then the telescopic ladder 4 is rotated outward to stretch it. At this time, the air intake valve 11 is opened, so that the air intake fan 6 blows air into the airbag 8 through the air guide pipe 10. At this time, the airbag 8 is stretched, so that the telescopic ladder 4 is instantly stretched. At the same time, in this process, the third N-shaped connecting frame 403 drives the connecting rope 16 to move forward, so that the winding roller 15 rotates clockwise. At this time, the winding spring is tightened, and then the air intake valve 11 is closed. At this time, the telescopic ladder 4 floats on the water surface under the action of the airbag 8, which is convenient for the rescued personnel to quickly contact the telescopic ladder 4 for climbing;

[0048] After use, the exhaust valve 12 is opened and the connecting rope 16 is pulled back, so that the connecting rope 16 drives the telescopic ladder 4 to contract, and the gas inside the airbag 8 is discharged outward. At the same time, the coil spring stretches to drive the winding roller 15 to rotate in the opposite direction, and the retracted connecting rope 16 is wound on the outer surface of the winding roller 15, so as to facilitate the rapid recovery of the telescopic ladder 4.

[0049] Embodiment 2

[0050] Referring to the attached Figure 1-7 , based on the emergency rescue hovercraft and its hovercraft ladder for flood disasters, on the basis of the first embodiment, the device further includes that the top of the third N-shaped connecting frame 403 is provided with a movable groove 19, and the inside of the movable groove 19 is provided with a clamping component 20. A clamping groove 7 is provided on the inner side wall of the rotating door panel 5, and the clamping component 20 is movably clamped inside the clamping groove 7. Clamping holes 13 are provided on both sides of the top of the rotating door panel 5. A sliding groove 21 is provided on the inner wall of the hovercraft main body 1, and a clamping rod 23 is provided inside the sliding groove 21. The clamping rod 23 is movably inserted into the clamping hole 13. The clamping component 20 includes a dial block 201, a clamping block 202, a fixing rod 203 and a first spring 204. The fixing rod 203 is fixedly connected inside the movable groove 19. The dial block 201 is movably sleeved on the outer surfaces of both ends of the fixing rod 203. The first spring 204 is movably sleeved on the outer surface of the middle part of the fixing rod 203. One end of the clamping block 202 is fixedly connected to the dial block 201, and the other end of the clamping block 202 is movably clamped with the clamping groove 7. A sliding block 22 is fixedly connected to the end of the clamping rod 23. A second spring 24 is provided on the other side of the sliding block 22. The sliding block 22 and the second spring 24 are both slidably connected inside the sliding groove 21;

[0051] After the first embodiment is completed, by turning the telescopic ladder 4 back, the first N-shaped connecting frame 401 rotates on the inner side wall of the rotating door panel 5, and finally the clamping block 202 on the outer surface of the third N-shaped connecting frame 403 contacts the clamping groove 7. At this time, the clamping block 202 is squeezed by the inclined triangular surface at its end with the side surface of the clamping groove 7, so that the two clamping blocks 202 move towards the middle, and the first spring 204 is compressed. When the clamping block 202 completely enters the clamping groove 7, the first spring 204 stretches and pushes the two clamping blocks 202 towards both sides, so that the clamping block 202 is clamped with the clamping groove 7 to complete the fixation;

[0052] Then, by pushing the sliding block 22 to one side, the second spring 24 is compressed, and at the same time the clamping rod 23 retracts into the hovercraft main body 1. Then the rotating door panel 5 is rotated upwards. At this time, the sliding block 22 is released, and under the action of the second spring 24, the clamping rod 23 is inserted into the clamping hole 13 to fix the rotating door panel 5, which is convenient for the telescopic ladder 4 to be stored.

[0053] In summary, compared with the prior art, the following beneficial effects are achieved:

[0054] 1. The emergency rescue air cushion boat and its air cushion ladder for flood disasters can be operated as follows: Rotate the rotating door panel 5 outward to open it, and then rotate the telescopic ladder 4 outward to expand it. At this time, open the intake valve 11, so that the intake fan 6 blows air into the airbag 8 through the air duct 10. At this time, the airbag 8 is expanded, causing the telescopic ladder 4 to instantly extend. At the same time, the third N-shaped connecting frame 403 drives the connecting rope 16 to move forward, causing the wire winding roller 15 to rotate clockwise. At this time, the coil spring is tightened. Then close the intake valve 11. At this time, the telescopic ladder 4 floats on the water surface under the action of the airbag 8, making it convenient for the rescued personnel to quickly reach the telescopic ladder 4 for climbing.

[0055] 2. For the emergency rescue air cushion boat and its air cushion ladder for flood disasters, by opening the exhaust valve 12, pull the connecting rope 16 back at this time, so that the connecting rope 16 drives the telescopic ladder 4 to contract. At the same time, the gas inside the airbag 8 is discharged outward. At the same time, the coil spring unfolds and drives the wire winding roller 15 to rotate in the reverse direction, winding the retracted connecting rope 16 around the outer surface of the wire winding roller 15, thus facilitating the rapid recovery of the telescopic ladder 4.

[0056] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An emergency rescue hovercraft for flood disasters, characterized in that, It includes an air-cushion vehicle main body (1), an exhaust air-cushion (2) is fixedly installed at the bottom of the air-cushion vehicle main body (1), an intake fan (6) is fixedly installed at the top end of the air-cushion vehicle main body (1), upper and lower channels (3) are opened on both sides of the air-cushion vehicle main body (1), and a rotating door panel (5) is movably hinged inside the upper and lower channels (3); The air-cushion ladder of the emergency rescue air-cushion vehicle includes a telescopic ladder (4), the telescopic ladder (4) is installed on the inner side wall of the rotating door panel (5), an airbag (8) is fixedly installed at the bottom of the telescopic ladder (4), both ends of the airbag (8) are fixedly connected with air guide pipes (10), intake valves (11) and exhaust valves (12) are respectively fixedly installed at the ends of the two groups of air guide pipes (10), the intake valve (11) is connected with the intake fan (6), one end of the telescopic ladder (4) is rotatably connected with a winding roller (15), a connecting rope (16) is wound inside the winding roller (15), and the end of the connecting rope (16) is fixedly connected with the other end of the telescopic ladder (4); The telescopic ladder (4) includes a first N-shaped connecting frame (401), a second N-shaped connecting frame (402) and a third N-shaped connecting frame (403), the second N-shaped connecting frame (402) is movably inserted inside the first N-shaped connecting frame (401), and the third N-shaped connecting frame (403) is movably inserted inside the second N-shaped connecting frame (402); The first N-shaped connecting frame (401) is rotatably connected to the inner side wall of the rotating door panel (5), a fixed shaft (14) is fixedly connected inside the first N-shaped connecting frame (401), the winding roller (15) is rotatably connected to the outer surface of the fixed shaft (14), a torsion spring is provided between the winding roller (15) and the fixed shaft (14), connecting holes (17) are opened at the ends of the first N-shaped connecting frame (401) and the second N-shaped connecting frame (402), the connecting rope (16) passes through the connecting holes (17), and the end of the connecting rope (16) is fixedly connected to the end of the third N-shaped connecting frame (403).

2. The hover ladder of the emergency rescue hovercraft for flood disasters according to claim 1, characterized in that, Fixed rings (18) are fixedly connected to the lower surfaces of the ends of the first N-shaped connecting frame (401), the second N-shaped connecting frame (402) and the third N-shaped connecting frame (403), the airbag (8) is fixedly installed inside the fixed rings (18), a connecting groove (9) is opened on the inner side wall of the rotating door panel (5), the air guide pipe (10) is installed inside the connecting groove (9), and the intake valve (11) and the exhaust valve (12) are respectively installed on both sides of the inner wall of the air-cushion vehicle main body (1).

3. The hover ladder of the emergency rescue hovercraft for flood disasters according to claim 1, characterized in that, An activity groove (19) is opened at the top end of the third N-shaped connecting frame (403), a clamping component (20) is arranged inside the activity groove (19), a clamping groove (7) is opened on the inner side wall of the rotating door panel (5), and the clamping component (20) is movably clamped inside the clamping groove (7); The clamping component (20) includes a dial block (201), a clamping block (202), a fixing rod (203) and a first spring (204). The fixing rod (203) is fixedly connected inside the movable slot (19). The dial block (201) is movably sleeved on the outer surfaces of both ends of the fixing rod (203). The first spring (204) is movably sleeved on the outer surface of the middle part of the fixing rod (203). One end of the clamping block (202) is fixedly connected to the dial block (201), and the other end of the clamping block (202) is movably clamped with the card slot (7).

4. The hover ladder of the emergency rescue hovercraft for flood disasters according to claim 1, characterized in that, Card holes (13) are formed on both sides of the top end of the rotating door panel (5). A sliding slot (21) is formed on the inner wall of the hovercraft main body (1). A clamping rod (23) is arranged inside the sliding slot (21), and the clamping rod (23) is movably inserted into the card hole (13).

5. The hover ladder of the emergency rescue hovercraft for flood disasters according to claim 4, characterized in that, A slider (22) is fixedly connected to the end of the clamping rod (23). A second spring (24) is arranged on the other side of the slider (22). Both the slider (22) and the second spring (24) are slidably connected inside the sliding slot (21).

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