A mobile aircraft live-fire training fuel supply system

Abstract

The application discloses a mobile aircraft real fire training fuel supply system, which comprises a movable chassis assembly, a support fixing frame assembly, a tank fixing device, a protective door, a fuel storage tank, a parallel gas pipe assembly, a gas control box, a buffer pad, a right-angle vertical plate and a locking plate with holes, and the support fixing frame assembly is fixedly installed above the movable chassis assembly. Through the arrangement of the movable chassis assembly, the mobile aircraft real fire training fuel supply system has the effects that the system is movable, has high adaptability and does not forcibly occupy a site. Through the cooperation of the support fixing frame assembly and the tank fixing device, the mobile aircraft real fire training fuel supply system has the effect that different specifications and sizes of fuel storage tanks can be conveniently fixed. Through the cooperation of the movable chassis assembly and the support fixing frame assembly, the mobile aircraft real fire training fuel supply system has the effects that the control components are not easily damaged by external force and are convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of fire rescue training equipment technology, specifically a mobile aircraft live-fire training fuel supply system. Background Technology

[0002] Existing aircraft live-fire training systems generally employ fixed installation methods for their fuel supply systems, meaning that fuel storage components, delivery pipelines, and other components are fixed to ground foundations. While designed to be suitable for large training bases with fixed training areas and ample space, these systems suffer from the following technical drawbacks: 1. Lack of mobility leads to limited adaptability and space occupation: It is impossible to quickly move the location according to the training needs, nor can it be moved to a safe area when not in use. The flexibility of use is extremely poor, which makes it unsuitable for temporary training sites, training sites with limited space, or sites where the gas cylinder storage space does not meet the relevant fire protection requirements. After fixed installation, it occupies the site for a long time. Even if training is not carried out, the location cannot be flexibly adjusted, resulting in a waste of site resources. 2. Fuel tanks are inconvenient to fix or the fixing methods are not applicable: Existing fuel tanks are generally fixed by rope binding, clamp locking, and reserved slot limit. Rope binding is not only troublesome to assemble and disassemble but also not secure. Clamp locking requires the inner diameter of the clamp to be the same as the outer diameter of the fuel tank. Reserved slot limit also requires the slot to match the fuel tank. The latter two fixing methods cannot be fixed when changing to other specifications of fuel tanks. 3. Control components are easily damaged by external forces or are difficult to operate: Existing control components (such as safety valves, pressure sensors, pressure regulating valves, and explosion-proof monitoring devices) are generally installed close to the fuel storage tank or on the outside of the support frame. Although they are easy to operate, they are easily damaged by external forces. Alternatively, they are installed at the bottom of the support frame with a protective cover, but they require bending over or lying down to operate, which is very inconvenient. Summary of the Invention

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a mobile aircraft live-fire training fuel supply system. It has the advantages of being mobile and highly adaptable without occupying a site, convenient for fixing fuel tanks of different sizes, and control components that are not easily damaged by external forces and are easy to operate. It solves the problems of limited adaptability and site occupation due to lack of mobility, inconvenient or unsuitable fixing of fuel tanks, and easy damage or difficulty in operation of control components.

[0004] (II) Technical Solution To achieve the aforementioned goals of mobility, adaptability, no forced site occupation, convenient fixing of fuel tanks of different sizes, and control components that are not easily damaged by external forces and are easy to operate, the present invention provides the following technical solution: a mobile aircraft live-fire training fuel supply system, comprising a mobile chassis assembly, a support and fixing frame assembly, a tank fixing device, a protective door, a fuel tank, a parallel gas pipe assembly, a gas control box, a buffer pad, a right-angle vertical plate, and a locking plate with holes. The support and fixing frame assembly is fixedly installed on top of the mobile chassis assembly. The fuel tank is placed inside the support and fixing frame assembly and fixed by the tank fixing device. The protective door is installed around the perimeter of the support and fixing frame assembly. The parallel gas pipe assembly is installed above the support and fixing frame assembly. The gas control box is installed on the top of the support and fixing frame assembly.

[0005] Preferably, the movable chassis assembly includes a bottom bracket, a multi-functional folding frame is hinged to one side of the bottom bracket, four corners of the bottom of the bottom bracket are equipped with braked casters, the multi-functional folding frame is ladder-shaped, a support leg is fixedly installed on the side of the multi-functional folding frame near the bottom bracket, a traction ring is fixedly installed on the other side of the multi-functional folding frame away from the bottom bracket, and the support and fixing frame assembly is fixedly connected to the bottom bracket by welding.

[0006] Preferably, the support frame assembly includes a support frame base plate, a support frame top plate, a central column, peripheral columns, and U-shaped channel steel. The central column is fixedly installed in the middle position between the support frame base plate and the support frame top plate. There are four peripheral columns, which are fixedly installed at the midpoint of the four sides of the support frame base plate and the support frame top plate. There are eight U-shaped channel steels, which are divided into four groups and fixedly installed between the four peripheral columns and the central column. The opening of the U-shaped channel steel faces upward and the tank fixing device is installed inside the U-shaped channel steel.

[0007] Preferably, the tank fixing device includes a T-shaped lead screw, an inner shaft support plate, an outer shaft support plate, a lead screw nut, a smooth shaft, a pressure plate, and a star-head bolt. The T-shaped lead screw is installed between the inner and outer shaft support plates and is rotatable. The inner and outer shaft support plates are fixedly installed at both ends inside the U-shaped channel steel from the bottom by bolts. The lead screw nut is driven to move inside the U-shaped channel steel by the T-shaped lead screw. The lead screw nut is clearance-fitted with the U-shaped channel steel and its top surface is flush with the top of the U-shaped channel steel. The smooth shaft is fixedly installed at the middle position of the top of the lead screw nut. A through hole with clearance fit to the smooth shaft is opened at the middle position of the pressure plate. The star-head bolt is threaded and installed at the middle position above the outer shaft support plate. The peripheral columns have adjustment holes concentric with the T-shaped lead screw. An external hexagonal shaft is provided at the end of the T-shaped lead screw near the peripheral columns.

[0008] Preferably, the parallel gas pipe assembly includes an upper pipe and multiple lower connectors with valves. The upper pipe communicates with all the connectors, the connectors pass through the top plate of the support frame and the valves are located below, and the connectors are connected to the fuel storage tank via hoses.

[0009] Preferably, the gas control box is fixedly installed on one side near the multi-functional folding frame. The gas control box is connected to the parallel gas pipe assembly through a metal pipe. The gas control box is equipped with a safety valve, an explosion-proof monitoring meter, a pressure monitoring sensor, a combustible gas sensor, and quick connectors for external connections.

[0010] Preferably, the buffer pad is bonded to both sides of the pressure plate and both sides of the U-shaped channel steel by strong adhesive, and the material of the buffer pad is hard rubber.

[0011] Preferably, the right-angle vertical plate is fixedly installed above the four corners of the base plate of the support frame and below the four corners of the top plate of the support frame by welding. One side of the protective door is hinged to the surrounding columns by hinges, and when the other side contacts the right-angle vertical plate, the protective door is parallel to the corners of the base plate of the support frame.

[0012] Preferably, the perforated locking plate is fixedly installed on the outer side of the peripheral column by welding, and the perforated locking plate is installed in the middle of the peripheral column.

[0013] Compared with the prior art, the present invention provides a mobile aircraft live-fire training fuel supply system, which has the following beneficial effects: 1. The mobile aircraft live-fire training fuel supply system, through the setting of a mobile chassis assembly, enables the mobile aircraft live-fire training fuel supply system to have the effect of being mobile and highly adaptable without forcibly occupying a site. Since the mobile chassis assembly is equipped with braked universal wheels and towing rings, it can be towed on the ground by external force and fixed in a different location, thus achieving the effect of being mobile and highly adaptable without forcibly occupying a site.

[0014] 2. This mobile aircraft live-fire training fuel supply system, through the coordinated arrangement of the support and fixing frame assembly and the tank fixing device, enables the mobile aircraft live-fire training fuel supply system to conveniently fix fuel tanks of different specifications and sizes. Since the support and fixing frame assembly divides the internal space into various small spaces through U-shaped channel steel, and the tank fixing device that can drive the pressure plate to move is installed on the U-shaped channel steel, the fuel tank can be quickly and easily fixed in the support and fixing frame assembly through the tank fixing device. At the same time, since the pressure plate is divided into upper and lower layers and can rotate, it can fix fuel tanks of various heights and diameters.

[0015] 3. This mobile aircraft live-fire training fuel supply system, through the coordinated arrangement of the movable chassis assembly and the support frame assembly, enables the control components to be less susceptible to damage from external forces and to be easy to operate. The control components are installed on the top of the support frame assembly, which not only provides a high installation height but also prevents collisions from the side. In addition, the movable chassis assembly has a multi-functional folding frame that acts as a ladder, making it convenient to climb upwards to operate the control components. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the overall three-dimensional view of the mobile aircraft live-fire training fuel supply system proposed in this invention; Figure 2 This is a schematic diagram of the left side of the mobile aircraft live-fire training fuel supply system proposed in this invention; Figure 3 This is a partial three-dimensional view of the fuel supply system for live-fire training of mobile aircraft proposed in this invention. Figure 4 This is a schematic diagram of the tank fixing device of the mobile aircraft live-fire training fuel supply system proposed in this invention; Figure 5 This is a partial top view of the mobile aircraft live-fire training fuel supply system proposed in this invention.

[0017] In the diagram: 1. Movable chassis assembly; 11. Bottom bracket; 12. Multi-functional folding frame; 13. Universal casters with brakes; 14. Outriggers; 15. Traction ring; 2. Support and fixing frame assembly; 21. Support frame base plate; 22. Support frame top plate; 23. Central column; 24. Peripheral columns; 241. Adjustment hole; 25. U-shaped channel steel; 3. Tank fixing device; 31. T-shaped screw; 311. External hexagonal shaft; 32. Inner shaft support plate; 33. Outer shaft support plate; 34. Screw nut; 35. Optical shaft; 36. Pressure plate; 37. Torx head bolt; 4. Protective door; 5. Fuel storage tank; 6. Parallel gas pipe assembly; 7. Gas control box; 8. Buffer pad; 9. Right-angle vertical plate; 10. Locking plate with holes. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention is used in aircraft live-fire training scenarios to provide a safe, stable, and flexibly adjustable supply of combustible gas for the training process. Its mobile design adapts to different training site layouts, and its multi-tank parallel storage and precise fixing structure meet the fuel requirements of long-term, high-intensity training. At the same time, through multiple safety protections and convenient operation design, it ensures the safety and efficiency of the training process.

[0020] Please see Figure 1-5 In this invention, a piezoresistive sensor is used for pressure monitoring, with a measurement range of 0-700 kPa. The output voltage and pressure are linearly related, which is suitable for pressure monitoring requirements within the gas control box 7. A methane sensor is used for gas detection, with a response time ≤10s, a recovery time ≤30s, and a detection concentration range of 0.1%-2.0% VOL, meeting the requirements for flammable gas leak monitoring in practical training scenarios. The T-shaped lead screw 31 uses a Tr16×3 trapezoidal thread with a lead of 3mm and a rated dynamic load ≥5kN. Stress analysis shows it can withstand the weight of the fuel tank 5 and the inertial forces during transportation. The U-shaped channel steel 25 is 5# hot-rolled channel steel, meeting the support strength requirements of the fuel tank 5. The safety valve is set to open at a pressure of 1.2MPa, automatically releasing pressure when this pressure is exceeded, providing explosion-proof protection. The gauge has a range of 0-2MPa and an accuracy class of 0.4 to ensure the accuracy of pressure monitoring; the hose is made of fluororubber resistant to gas corrosion, with a working pressure ≥2MPa, burst pressure ≥6MPa, and service life ≥5000 cycles; the casters 13 with brakes have a rated load ≥200kg and a braking torque ≥15N・m to ensure the stability of the equipment during movement and fixation; the plum head bolts 37 are made of M12×30 stainless steel bolts with a tightening torque set at 35N・m, and have been tested for vibration (frequency 10-50Hz, amplitude 0.5mm) for 2 hours without loosening; the central column 23 is made of 80×5mm rectangular steel pipe, and the peripheral columns 24 are made of 60×3.5mm rectangular steel pipe, with the overall frame rated load ≥500kg.

[0021] In use, first, according to the requirements of the training site, lay the multi-functional folding frame 12 flat, connect the traction equipment through the traction ring 15, move the system to the designated position, lock the universal caster 13 with brakes, and then raise the multi-functional folding frame 12 so that the outriggers 14 contact the ground to form a stable ladder. Then, climb up the multi-functional folding frame 12 to operate the gas control box 7, including testing and connecting external pipelines. When it is necessary to replace the new fuel tank 5, first untie the chains / cables / ropes binding the support frame assembly 2, then open the protective door 4, and then use the hex socket to rotate the T-shaped screw 31, so that the screw nut 34 moves outward. At this time, the pressure plate 36 also moves outward. The external movement prevents the fuel tank 5 from being pressed backward, and the pressure plate 36 is further lifted and removed so that it no longer interferes with the removal of the fuel tank 5. Each fuel tank 5 is pressed and fixed from both sides by the pressure plate 36. Therefore, removing a fuel tank 5 requires removing both pressure plates 36 at the same time. Although one pressure plate 36 fixes both fuel tanks 5, if only one pressure plate 36 is removed, the fuel tank 5 will still be fixed and will not loosen. Therefore, when removing the pressure plates 36 on both sides of a fuel tank 5, the adjacent fuel tanks 5 on both sides are fixed by another pressure plate 36 on the other side. After the new fuel tank 5 is placed in, the pressure plate 36 is reinstalled through the optical axis 35. Above the lead screw nut 34, the lead screw nut 34 is further driven inward by the T-shaped lead screw 31. When both sides of the pressure plate 36 are in contact with and pressed against the fuel tank 5, the plum head bolt 37 is tightened downward to lock the T-shaped lead screw 31, making the pressure plate 36 immovable. Since the pressure plate 36 can rotate, it can still be fixed even if the size of the fuel tank 5 changes. After the fuel tank 5 is fixed, the customized hose is used to connect the fuel tank 5 to the joint of the parallel gas pipe assembly 6. The valve of the corresponding joint is opened. The valve of the joint not connected to the fuel tank 5 must always be closed. Up to four fuel tanks 5 can be installed, or only one can be installed. The pressure plate 36 can press two tanks simultaneously. The fuel tank 5 on one side can also be pressed down on only one side, and then the other side is in contact with the middle column 23 to maintain balance. After the fuel tank 5 is installed, if it is to be used for gas supply, the protective door 4 should not be restrained with chains / steel cables / ropes to ensure that in case of an accident in the external gas supply, the valve on the fuel tank 5 can be quickly closed, or the valve of the lower connector of the parallel gas pipe assembly 6 can be quickly closed. When moving the fuel supply system, the protective door 4 needs to be restrained to prevent it from opening on its own. After the training is completed, close the valve of the fuel tank 5 and the connector valve of the parallel gas pipe assembly 6, disconnect from the combustion device, and after the system pressure drops to a safe range, the device can be moved to the storage site or the next training location as needed.

[0022] In summary, this mobile aircraft live-fire training fuel supply system, due to the presence of braked casters 13 and traction rings on the movable chassis assembly 1, can be towed on the ground and moved to different locations, thus achieving a highly adaptable and mobile design without forcibly occupying space. Since the support frame assembly 2 divides its internal space into smaller compartments using U-shaped channel steel 25, and a tank fixing device 3 capable of driving the pressure plate 36 is installed on the U-shaped channel steel 25, the fuel tank 5 can be quickly and easily fixed within the support frame assembly 2. Furthermore, because the pressure plate 36 is divided into upper and lower layers and is rotatable, it can fix various fuel tanks 5 of different heights and diameters. The control components are mounted on the top of the support frame assembly 2, providing a high mounting height and preventing collisions from the side. Additionally, the movable chassis assembly 1 includes a multi-functional folding frame 12 that functions as a ladder, facilitating upward climbing to operate the control components.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile aircraft live-fire training fuel supply system, comprising a movable chassis assembly (1), a support and fixing frame assembly (2), a tank fixing device (3), a protective door (4), a fuel storage tank (5), a parallel gas pipe assembly (6), a gas control box (7), a buffer pad (8), a right-angle vertical plate (9), and a locking plate with holes (10), characterized in that: The support frame assembly (2) is fixedly installed above the movable chassis assembly (1). The fuel tank (5) is placed inside the support frame assembly (2) and fixed by the tank fixing device (3). The protective door (4) is installed around the support frame assembly (2). The parallel gas pipe assembly (6) is installed above the support frame assembly (2). The gas control box (7) is installed on the top of the support frame assembly (2).

2. The mobile aircraft live-fire training fuel supply system according to claim 1, characterized in that: The movable chassis assembly (1) includes a bottom bracket (11), a multi-functional folding frame (12) is hinged to one side of the bottom bracket (11), and four corners of the bottom of the bottom bracket (11) are equipped with braked casters (13). The multi-functional folding frame (12) is ladder-shaped. A support leg (14) is fixedly installed on the side of the multi-functional folding frame (12) close to the bottom bracket (11), and a traction ring (15) is fixedly installed on the other side of the multi-functional folding frame (12) away from the bottom bracket (11). The support and fixing frame assembly (2) is fixedly connected to the bottom bracket (11) by welding.

3. The mobile aircraft live-fire training fuel supply system according to claim 1, characterized in that: The support frame assembly (2) includes a support frame base plate (21), a support frame top plate (22), a middle column (23), peripheral columns (24), and U-shaped channel steel (25). The middle column (23) is fixedly installed in the middle position between the support frame base plate (21) and the support frame top plate (22). There are four peripheral columns (24), which are fixedly installed at the midpoint of the four sides of the support frame base plate (21) and the support frame top plate (22). There are eight U-shaped channel steels (25), which are divided into four groups and fixedly installed between the four peripheral columns (24) and the middle column (23). The slot of the U-shaped channel steel (25) faces upward and the tank fixing device (3) is installed inside the U-shaped channel steel (25).

4. The mobile aircraft live-fire training fuel supply system according to claim 3, characterized in that: The tank fixing device (3) includes a T-shaped screw (31), an inner shaft support plate (32), an outer shaft support plate (33), a screw nut (34), a smooth shaft (35), a pressure plate (36), and a star head bolt (37). The T-shaped screw (31) is installed between the inner shaft support plate (32) and the outer shaft support plate (33) and is rotatable. The inner shaft support plate (32) and the outer shaft support plate (33) are fixedly installed at both ends inside the U-shaped channel steel (25) from the bottom by bolts. The screw nut (34) is driven to move inside the U-shaped channel steel (25) by the T-shaped screw (31). The screw nut (34) is clearance-fitted with the U-shaped channel steel (25) and its top surface is flush with the top of the U-shaped channel steel (25). The optical shaft (35) is fixedly installed at the middle position of the top of the screw nut (34). The middle position of the pressure plate (36) is provided with a through hole that is clearance-fitted with the optical shaft (35). The plum head bolt (37) is threaded and installed at the middle position above the outer shaft support plate (33). The peripheral column (24) is provided with an adjustment hole (241) concentric with the T-shaped screw (31). The end of the T-shaped screw (31) near the peripheral column (24) is provided with an external hexagonal shaft (311).

5. The mobile aircraft live-fire training fuel supply system according to claim 3, characterized in that: The parallel gas pipe assembly (6) includes an upper pipe and multiple valved joints below. The upper pipe is connected to all the joints. The joints pass through the top plate (22) of the support frame and the valves are located below. The joints are connected to the fuel storage tank (5) via hoses.

6. The mobile aircraft live-fire training fuel supply system according to claim 2, characterized in that: The gas control box (7) is fixedly installed on one side near the multi-functional folding frame (12). The gas control box (7) is connected to the parallel gas pipe assembly (6) through a metal pipe. The gas control box (7) is equipped with a safety valve, an explosion-proof monitoring meter, a pressure monitoring sensor, a combustible gas sensor, and quick connectors for external connection.

7. The mobile aircraft live-fire training fuel supply system according to claim 4, characterized in that: The buffer pad (8) is bonded to both sides of the pressure plate (36) and both sides of the U-shaped channel steel (25) by strong adhesive. The material of the buffer pad (8) is hard rubber.

8. The mobile aircraft live-fire training fuel supply system according to claim 3, characterized in that: The right-angle vertical plate (9) is fixedly installed above the four corners of the support frame base plate (21) and below the four corners of the support frame top plate (22) by welding. One side of the protective door (4) is hinged to the surrounding column (24) by a hinge. When the other side contacts the right-angle vertical plate (9), the protective door (4) is parallel to the corner of the support frame base plate (21).

9. The mobile aircraft live-fire training fuel supply system according to claim 3, characterized in that: The perforated locking plate (10) is fixedly installed on the outer side of the peripheral column (24) by welding, and the perforated locking plate (10) is installed in the middle of the peripheral column (24).

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