Rapidly-installed operation guarantee subsystem adaptive to AC313 helicopter

Abstract

The invention provides a rapid installation type operation guarantee subsystem adaptive to an AC313 helicopter, and relates to the technical field of rapid installation of helicopters. The invention relates to a quickly-mounted operation guarantee subsystem adaptive to an AC313 helicopter. The quickly-mounted operation guarantee subsystem is mounted on a cabin bottom plate and comprises a fixing frame and at least two quick-dismounting and quick-locking devices, the quick-release and quick-locking device comprises a rail, four sliding blocks, two bearing blocks, a passive pressure applying assembly, two limiting plates and an active pressure applying piece, the bearing blocks are used for locking the supporting legs in the radial direction, power for downward displacement is provided for the passive pressure applying assembly through the supporting legs, hydraulic oil transmits the force to the two limiting plates, and the active pressure applying piece is driven by the hydraulic oil. The two limiting plates get close to each other, and the supporting legs on the bearing blocks are rapidly locked from the top ends; hydraulic oil on the two sides is pumped out through the active pressure exerting piece, negative pressure is formed at the limiting plates, the two limiting plates move reversely through negative pressure suction force, and the supporting legs are rapidly unlocked; and a plurality of springs are arranged, so that the I-shaped strip has an upward resetting function.

Description

Technical Field

[0001] This application relates to the field of rapid helicopter retrofitting technology, and more specifically, to a rapid retrofitting operation support subsystem adapted to the AC313 helicopter. Background Technology

[0002] The AC313 helicopter, a large civilian helicopter independently developed in my country, is widely used in emergency rescue, medical transport and other fields. It needs to be equipped with support equipment such as rescue stretchers to expand its functions according to the mission.

[0003] However, the existing methods for adding operational support equipment to AC313 helicopters generally suffer from problems such as low installation efficiency, cumbersome operation procedures, and stringent requirements for the working environment and personnel skills. Traditional installation methods often adopt a structural design of bolt fastening and multi-part step-by-step assembly, which not only requires specialized disassembly and assembly tools and multiple technicians to work together, but also requires multiple calibrations and positioning of the fuselage's pre-set interfaces during the installation process.

[0004] In time-sensitive missions such as emergency rescue, excessively long installation and disassembly times can severely delay mission response speed and fail to meet the practical requirements of "rapid deployment and immediate operation". At the same time, the connection stability of traditional installation structures is highly dependent on the precision of manual operation. If positioning deviations or inadequate fastening occur during assembly, the installed equipment may shake or shift during flight, or even affect the helicopter's flight attitude, posing a great safety hazard. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a rapid-installation operational support subsystem adapted to the AC313 helicopter, installed on the cabin floor, including a mounting frame and at least two quick-release and quick-lock devices; at least four outriggers are uniformly fixed to the bottom end of the mounting frame; two quick-release and quick-lock devices are fixed side-by-side on the cabin floor, and each quick-release and quick-lock device is adapted to one of the four outriggers; each quick-release and quick-lock device includes a track, four sliders, two bearing blocks, a passive pressure application component, two limiting plates, and an active pressure application component. The track is fixed to the cabin floor, the four sliders slide symmetrically in pairs on both sides inside the track, the two bearing blocks are fixed between the two symmetrical sliders, and the passive pressure application component is slidably connected to the two bearing blocks and slidably and sealingly inserted into the sliders. The track, in which the passive pressure application component is inserted, is filled with hydraulic oil. Two limiting plates symmetrically and sealingly slide on both sides of the track, and the positions where the limiting plates slide sealingly on the track are connected to the positions where the track is filled with hydraulic oil. After the outrigger is inserted into the two bearing blocks, it applies downward displacement pressure to the passive pressure application component, causing the hydraulic oil in the track to flow towards the limiting plates on both sides, and forcing the two limiting plates to move closer to each other. The limiting plates move the top of the outrigger to form a locking action. The active pressure application component is connected to one end of the track and is used to actively extract or discharge hydraulic oil, so that the two limiting plates that limit the outrigger move away from each other to form an unlocking action for the outrigger.

[0006] Preferably, the track has an axisymmetric structure, and two track cabins are symmetrically arranged on the inner side of the track, with the track cabins and the slider being slidably adapted to each other.

[0007] Preferably, the bottom of the track is provided with a main liquid storage tank and two auxiliary liquid storage tanks. The main liquid storage tank is filled with hydraulic oil, and the two auxiliary liquid storage tanks are symmetrically arranged on both sides of the main liquid storage tank and are connected to the main liquid storage tank by a liquid delivery pipeline.

[0008] Preferably, the upper end of the auxiliary liquid storage tank is provided with a sliding notch, and the limiting plate slides on the sliding notch.

[0009] Preferably, the bearing block is provided with an axial hole along the axial direction, the axial hole and the support leg are slidably adapted, a sliding cavity is provided through the side of the bearing block, the sliding cavity is connected to the axial hole, and a sliding groove is provided on the bottom side of the sliding cavity.

[0010] Preferably, the passive pressure assembly includes an I-shaped strip that slides and seals within the main liquid storage tank and the sliding cavity, and a partition plate centrally fixed within the main liquid storage tank. One end of the I-shaped strip inserted into the main liquid storage tank has a centrally located slot, and the partition plate and the slot are in a sealed sliding fit.

[0011] Preferably, the bottom end of the partition has multiple through holes evenly distributed to facilitate the exchange of hydraulic oil between the two sides.

[0012] Preferably, multiple elastic elements are uniformly fixed to the bottom of the main liquid storage tank, and the I-shaped strip is slidably sleeved on the multiple elastic elements, which enable the I-shaped strip to have the function of upward reset.

[0013] Preferably, the elastic element includes a guide rod fixed to the bottom end of the main liquid storage tank, the guide rod being slidably inserted into the bottom end of the I-shaped strip, and a spring being sleeved on the guide rod, one end of the spring abutting against the bottom end of the main liquid storage tank, and the other end of the spring abutting against the bottom end of the I-shaped strip.

[0014] Preferably, a connecting block is fixedly connected to one end of the limiting plate, and a pressure-bearing strip is fixedly connected to one end of the connecting block. The connecting block slides in the sliding notch, and the pressure-bearing strip slides in a sealed manner in the secondary liquid storage tank.

[0015] According to an embodiment of this application, a rapid-installation operation support subsystem adapted for the AC313 helicopter has the following advantages: 1. The support block is used to lock the outrigger in the radial direction. The outrigger provides downward displacement power to the passive pressure component. The hydraulic oil is used to transmit the force to the two limit plates. Under the pressure, the two limit plates move closer to each other, and the outrigger on the support block is quickly locked from the top. 2. The hydraulic oil on both sides is extracted by the active pressure device, creating a negative pressure at the limit plate. The negative pressure suction causes the two limit plates to move in opposite directions, thus quickly unlocking the outrigger. 3. By using multiple springs, the I-shaped bar can be reset upwards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a rapid-installation operation support subsystem adapted to the AC313 helicopter according to an embodiment of this application. Figure 2 This is an exploded view of the structure of a rapid-installation operation support subsystem adapted to the AC313 helicopter according to an embodiment of this application; Figure 3This is a partial exploded view of the quick-release and quick-lock device according to an embodiment of this application; Figure 4 According to the embodiments of this application Figure 3 Enlarged view of A in the middle; Figure 5 According to the embodiments of this application Figure 3 Enlarged view of B in the middle; Figure 6 According to the embodiments of this application Figure 3 Enlarged view of C in the middle; Figure 7 This is a schematic diagram of the structure of the limiting plate according to an embodiment of this application.

[0018] Icons: 1. Fixing frame; 11. Support leg; 2. Quick-release and quick-lock device; 21. Track; 211. Track compartment; 212. Main liquid storage tank; 213. Secondary liquid storage tank; 214. Sliding notch; 215. Infusion pipeline; 22. Slider; 23. Bearing block; 231. Axial hole; 232. Sliding cavity; 233. Slide groove; 24. Passive pressure application component; 241. I-beam; 242. Partition plate; 243. Slot; 244. Through hole; 245. Guide rod; 246. Spring; 25. Limiting plate; 251. Connecting block; 252. Pressure bearing strip; 26. Active pressure application component; 27. End cap. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The following describes in detail, through specific embodiments, a rapid-installation operation support subsystem adapted to the AC313 helicopter, which is installed on the cabin floor, such as... Figures 1-7 As shown, it includes a mounting frame 1 and at least two quick-release and quick-lock devices 2. At least four outriggers 11 are evenly fixed to the bottom of the mounting frame 1. The two quick-release and quick-lock devices 2 are fixed side by side on the bottom plate of the cabin and are adapted to the four outriggers 11.

[0021] It should be noted that, in the embodiments of this application, the support leg 11 is as follows: Figure 4 As shown, its bottom end is provided with a circular limiting ring with a significantly increased diameter, so that it can be limited from the top.

[0022] Specifically, the quick-release and quick-lock device 2 includes a track 21, four sliders 22, two bearing blocks 23, a passive pressure component 24, two limit plates 25, and an active pressure component 26.

[0023] The track 21 is fixed to the bottom plate of the cabin, and two end caps 27 are fixed to both ends of the track 21.

[0024] In a specific embodiment of this application, four sliders 22 slide symmetrically in pairs on both sides inside the track 21.

[0025] Specifically, the track 21 has an axisymmetric structure, and two track cabins 211 are symmetrically arranged on the inner side of the track 21. The track cabins 211 and the slider 22 are slidably adapted to each other.

[0026] The bottom of the track 21 is provided with a main liquid storage tank 212 and two auxiliary liquid storage tanks 213. The main liquid storage tank 212 is filled with hydraulic oil. The two auxiliary liquid storage tanks 213 are symmetrically arranged on both sides of the main liquid storage tank 212 and are connected to the main liquid storage tank 212 by a liquid delivery pipe 215.

[0027] It should be noted that the slider 22 slides within the two track chambers 211 via a drive device. The specific structure of the drive device is not shown in the accompanying drawings of this application. Please refer to the prior art for powered linear slide rail devices, which will not be described in detail here.

[0028] Two bearing blocks 23 are fixed between two symmetrical sliders 22. The bearing blocks 23 are provided with axial holes 231 along the axial direction. The axial holes 231 and the limiting ring at the bottom of the support leg 11 are slidably adapted. A sliding cavity 232 is provided through the side of the bearing blocks 23. The sliding cavity 232 is connected to the axial hole 231. A connecting groove 233 is provided on the bottom side of the sliding cavity 232.

[0029] It should be noted that, in the specific embodiment of this application, after the limiting ring at the bottom of the support leg 11 is inserted into the axial hole 231, its top end is flush with the top end of the axial hole 231.

[0030] The passive pressure application component 24 is slidably connected to the two bearing blocks 23 and is sealed and slidably inserted into the track 21. Specifically, the passive pressure assembly 24 includes an I-shaped strip 241 that is sealed and slides within the main liquid storage tank 212 and the sliding cavity 232, and a partition 242 that is centrally fixed within the main liquid storage tank 212. One end of the I-shaped strip 241 inserted into the main liquid storage tank 212 is centrally provided with a slot 243, and the partition 242 and the slot 243 are sealed and slide in a sliding fit.

[0031] It should be noted that multiple through holes 244 are evenly distributed at the bottom of the partition 242 to facilitate the exchange of hydraulic oil between the two sides.

[0032] Furthermore, multiple elastic elements are uniformly fixed to the bottom of the main liquid storage tank 212, and the I-shaped strip 241 is sealed and slidably sleeved on the multiple elastic elements, which enable the I-shaped strip 241 to have the function of upward reset.

[0033] Specifically, the elastic element includes a guide rod 245 fixed to the bottom of the main liquid storage tank 212. The guide rod 245 is slidably inserted into the bottom of the I-shaped strip 241. A spring 246 is sleeved on the guide rod 245. One end of the spring 246 abuts against the bottom of the main liquid storage tank 212, and the other end of the spring 246 abuts against the bottom of the I-shaped strip 241.

[0034] Two limiting plates 25 are symmetrically and sealed to slide on both sides of the track 21. A connecting block 251 is fixed to one end of the limiting plate 25, and a pressure-bearing strip 252 is fixed to one end of the connecting block 251. The connecting block 251 slides on the sliding notch 214, and the pressure-bearing strip 252 slides sealed to the auxiliary liquid storage tank 213.

[0035] It should be noted that the end of the limiting plate 25 facing the support leg 11 has a sliding fit with the upper end surface of the bearing block 23, so as to limit the top of the support leg 11.

[0036] The upper end of the auxiliary liquid storage tank 213 is provided with a sliding notch 214, and the limiting plate 25 slides in the sliding notch 214.

[0037] The active pressure application component 26 is connected to one end of the main liquid storage tank 212.

[0038] Understandably, in the initial state, under the elastic force of the spring 246, the I-shaped bar 241 will be at the top, that is, the top of the I-shaped bar 241 is located in the axial hole 231, and the two limiting plates 25 are in a mutually distant posture, that is, leaving space for the support leg 11 to insert into the bearing block 23, and at this time there is no hydraulic oil inside the active pressure component 26.

[0039] It should be noted that the active pressure applying component 26 is used to extract hydraulic oil from the main reservoir 212 and the auxiliary reservoir 213. The active pressure applying component 26 can be designed as a tank for storing hydraulic oil and a piston end that applies pressure or negative pressure suction to the reservoir end. The piston end and the end of the reservoir without hydraulic oil have locking and unlocking functions. Thus, it can be understood that during the locking process, the hydraulic oil in the main reservoir 212 and the auxiliary reservoir 213 cannot flow into the active pressure applying component 26. After unlocking, external force can be manually applied to provide suction to the hydraulic oil in the main reservoir 212 and the auxiliary reservoir 213, drawing the hydraulic oil into the active pressure applying component 26. This structural design of the active pressure applying component 26 is already a mature technology, so it is not shown in the attached figure. It only needs to have self-locking and unlocking functions as well as the ability to provide pressure and suction to the main reservoir 212 and the auxiliary reservoir 213.

[0040] When installing the fixing frame 1, insert the two legs 11 on one side into the axial hole 231, and limit the legs 11 in the radial direction through the axial hole 231. At this time, the weight of the fixing frame 1 presses on the I-shaped bar 241, which will force the I-shaped bar 241 to move downward as a whole, that is, the bottom end of the I-shaped bar 241 is inserted into the partition plate 242. At this time, the spring 246 is compressed. Through the sealing sliding fit between the bottom end of the I-shaped bar 241 and the main liquid storage tank 212, the hydraulic oil is squeezed into the auxiliary liquid storage tanks 213 on both sides. At this time, the active pressure component 26 is self-locking, so the hydraulic oil will not flow into the active pressure component 26. Under the pressure of the hydraulic oil, the two limiting plates 25 will move closer to each other and slide above the axial hole 231 respectively, locking the legs 11 in the axial direction. At this time, the fixing frame 1 will be fixed on the slider 22. Then, its specific position on the track 21 can be changed by driving the slider 22 to move through the drive device of the track 21.

[0041] When dismantling is required, the self-locking state of the active pressure component 26 is manually released, and then the active pressure component 26 applies negative pressure to the main liquid storage tank 212 to generate suction, causing hydraulic oil to flow into the oil storage tank of the active pressure component 26. At this time, the hydraulic oil in the auxiliary liquid storage tank 213 decreases (the volume of the main liquid storage tank 212 remains unchanged because the position of the I-shaped strip 241 remains unchanged). The suction causes the two limiting plates 25 to actively move away from each other, that is, the two limiting plates 25 form a reset action, releasing the limiting effect on the top of the outrigger 11. At this time, the fixed frame 1 can be lifted out.

[0042] Then, the active pressure applying component 26 is manually reversed to cause the sucked-in hydraulic oil to flow back into the main reservoir 212. During this process, as the I-shaped bar 241 loses the pressure of the fixing frame 1, as the hydraulic oil gradually enters the main reservoir 212 from the active pressure applying component 26, the I-shaped bar 241 gradually rises under the action of the spring 246 compressed at the bottom until the hydraulic oil sucked in by the active pressure applying component 26 has completely returned to the main reservoir 212. At this time, the I-shaped bar 241 will reset back to the top. During this process, as the I-shaped bar 241 gradually rises, the hydraulic oil will not exert pressure on the limit plates 25 on both sides, so the two limit plates 25 will not be displaced.

[0043] Thus, the above design of this application will enable the addition of operational support equipment to the AC313 helicopter to form a quick lock, and prevent the fixed frame 1 from shaking or shifting during flight. The removal speed of the fixed frame 1 is also effectively improved compared with the prior art.

[0044] Of course, this application only shows the installation or removal of one mounting bracket 1. If multiple mounting brackets 1 need to be installed inside the helicopter, only a corresponding number of quick-release and quick-lock devices 2 need to be set.

[0045] It should be noted that the specific model and specifications of the fixing frame 1 and spring 246 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0046] The above embodiments are only used to illustrate specific implementations of the present invention and are not limited thereto. For those skilled in the art, various similar modifications and transformations can be made based on the concept of the present invention, and these modifications and transformations should all be considered within the scope of protection of the present invention.

Claims

1. A rapid-installation operational support subsystem adapted for the AC313 helicopter, installed on the cabin floor, comprising: The mounting bracket (1) and at least two quick-release and quick-lock devices (2); The bottom end of the fixed frame (1) is evenly fixed with at least four support legs (11). Two quick-release and quick-lock devices (2) are fixed side by side on the bottom plate of the cabin, and the two quick-release and quick-lock devices (2) are adapted to the four outriggers (11). The quick-release and quick-lock device (2) includes a track (21), four sliders (22), two support blocks (23), a passive pressure component (24), two limiting plates (25), and an active pressure component (26). The track (21) is fixed to the bottom plate of the cabin. The four sliders (22) slide symmetrically in pairs on both sides of the track (21). The two support blocks (23) are fixed between the two symmetrical sliders (22). The passive pressure component (24) is slidably connected to the two support blocks (23) and sealed and slidably inserted into the track (21). The position in the track (21) where the passive pressure component (24) is inserted is filled with hydraulic oil. The two limiting plates (25) slide symmetrically and sealedly on both sides of the track (21), and the limiting plates (26) are sealed and slidably inserted into the track (21). The plate (25) is sealed and slids in the position of the track (21) and the position of the track (21) filled with hydraulic oil. After the support leg (11) is inserted into the two bearing blocks (23), it applies downward displacement pressure to the passive pressure component (24), causing the hydraulic oil in the track (21) to flow towards the limiting plates (25) on both sides, and forcing the two limiting plates (25) to move closer to each other. The limiting plates (25) move the top of the support leg (11) to form a locking action. The active pressure component (26) is connected to one end of the track (21) and is used to actively extract or discharge the hydraulic oil, so that the two limiting plates (25) that limit the support leg (11) move away from each other to form an unlocking action for the support leg (11).

2. The rapid-installation operation support subsystem adapted for AC313 helicopters as described in claim 1, characterized in that, The track (21) has an axisymmetric structure, and two track cabins (211) are symmetrically arranged on the inner side of the track (21). The track cabins (211) and the slider (22) are slidably adapted to each other.

3. The rapid-installation operation support subsystem adapted for the AC313 helicopter as described in claim 1, characterized in that, The bottom of the track (21) is provided with a main liquid storage tank (212) and two auxiliary liquid storage tanks (213). The main liquid storage tank (212) is filled with hydraulic oil. The two auxiliary liquid storage tanks (213) are symmetrically arranged on both sides of the main liquid storage tank (212) and are connected to the main liquid storage tank (212) by a liquid delivery pipe (215).

4. The rapid-installation operation support subsystem adapted for the AC313 helicopter as described in claim 3, characterized in that, The upper end of the auxiliary liquid storage tank (213) is provided with a sliding notch (214), and the limiting plate (25) slides in the sliding notch (214).

5. The rapid-installation operation support subsystem adapted for the AC313 helicopter as described in claim 4, characterized in that, The bearing block (23) is provided with an axial hole (231) along the axial direction. The axial hole (231) and the support leg (11) are slidably adapted. A sliding cavity (232) is provided through the side of the bearing block (23). The sliding cavity (232) is connected to the axial hole (231). A connecting groove (233) is provided on the bottom side of the sliding cavity (232).

6. The rapid-installation operation support subsystem adapted for the AC313 helicopter as described in claim 5, characterized in that, The passive pressure assembly (24) includes an I-shaped strip (241) that is sealed and slides within the main liquid storage tank (212) and the sliding cavity (232), and a partition (242) that is centrally fixed within the main liquid storage tank (212). One end of the I-shaped strip (241) inserted into the main liquid storage tank (212) is centrally provided with a slot (243). The partition (242) and the slot (243) are sealed and slide in a sliding fit.

7. A rapid-installation operation support subsystem adapted for AC313 helicopters as described in claim 6, characterized in that, The bottom end of the partition (242) has a plurality of through holes (244) evenly distributed to facilitate the exchange of hydraulic oil between the two sides.

8. A rapid-installation operation support subsystem adapted for AC313 helicopters as described in claim 6, characterized in that, Multiple elastic elements are uniformly fixed to the bottom of the main liquid storage tank (212). The I-shaped strip (241) is sealed and slidably sleeved on the multiple elastic elements. The multiple elastic elements enable the I-shaped strip (241) to have the function of upward reset.

9. A rapid-installation operation support subsystem adapted for AC313 helicopters as described in claim 8, characterized in that, The elastic element includes a guide rod (245) fixed to the bottom end of the main liquid storage tank (212), the guide rod (245) being slidably inserted into the bottom end of the I-shaped strip (241), and a spring (246) being sleeved on the guide rod (245). One end of the spring (246) abuts against the bottom end of the main liquid storage tank (212), and the other end of the spring (246) abuts against the bottom end of the I-shaped strip (241).

10. A rapid-installation operational support subsystem adapted for AC313 helicopters as described in claim 1, characterized in that, One end of the limiting plate (25) is fixedly connected to a connecting block (251), and one end of the connecting block (251) is fixedly connected to a pressure-bearing strip (252). The connecting block (251) slides on the sliding notch (214), and the pressure-bearing strip (252) slides in a sealed manner on the auxiliary liquid storage tank (213).

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