Trailer-type integrated aviation equipment maintenance power supply device

Abstract

The application relates to a trailer-type integrated aviation equipment maintenance power supply device and relates to the technical field of maintenance power supply, which comprises a walking assembly, a cabinet body and a hollow through-type heat dissipation assembly, and the cabinet body is fixedly connected at the top of the walking assembly. The walking assembly is matched with a trailer chassis, walking wheels, universal wheels, a push-pull handrail and a traction ring, the trailer chassis stably bears the cabinet body and all electrical components in the cabinet body, when working, a worker can manually push the equipment by means of the push-pull handrail, the walking wheels are matched with the universal wheels to complete steering and displacement, when a long-distance transfer scene is encountered, the traction ring can be used to connect external traction equipment to complete mechanical towing, the whole walking structure can enable the device to be flexibly moved and quickly approach a fault airplane to complete positioning in a small space of an airport or a temporary parking space, special transfer vehicles are not needed, and long-distance power supply cables do not need to be additionally laid, and the problems of difficult movement of traditional aviation power supply equipment and low emergency guarantee efficiency are solved.

Description

Technical Field

[0001] This invention relates to the field of maintenance power supplies, and in particular to a trailer-mounted integrated maintenance power supply device for aviation equipment. Background Technology

[0002] Currently, most ground-based intermediate frequency power supply units used for aircraft equipment maintenance at airports are either fixed devices or have a split structure, resulting in low overall integration and numerous inconveniences in on-site transportation and use. These traditional devices are bulky and lack mobility. To transport them to a malfunctioning aircraft for power supply operations, specialized transport vehicles are often required. In some scenarios, it is even necessary to extend the cable lines for long-distance power supply, which not only increases the workload of on-site operations but also significantly slows down the response speed of emergency support.

[0003] Meanwhile, existing equipment generally employs a distributed heat dissipation layout for its internal power components. Each heat dissipation structure operates independently, failing to form a continuous and complete ventilation channel, resulting in messy and excessively long heat dissipation paths. The heat generated by these power devices is difficult to dissipate quickly and efficiently, easily accumulating in localized areas. If the equipment operates at high power for extended periods, overheating can occur, affecting both the stability of the power output and shortening the equipment's lifespan.

[0004] Furthermore, airport operations are mostly conducted in open-air environments with high levels of dust and fluctuating humidity. Traditional power supply equipment features relatively simple cabinet designs, with ventilation openings often being open-type structures, lacking specific sealing and protective features. Under harsh conditions such as rain and dust, rainwater and dust can easily seep into the equipment through the ventilation openings, corroding circuits and power devices, further reducing the reliability of the equipment and making it unsuitable for long-term use in complex environments such as field parking positions and open-air work areas. Summary of the Invention

[0005] Technical problems to be solved

[0006] The purpose of this application is to provide a trailer-mounted integrated aviation equipment maintenance power supply device to solve the problems mentioned in the background art.

[0007] This application provides a trailer-mounted integrated aviation equipment maintenance power supply device with the following technical solution: A trailer-mounted integrated aviation equipment maintenance power supply device includes a traveling assembly, a cabinet, and a hollow through-type heat dissipation assembly. The cabinet is fixedly connected to the top of the traveling assembly. The hollow through-type heat dissipation assembly includes a fixed frame fixedly connected to the inner wall of the cabinet. A hollow channel is fixedly connected to the outer surface of the fixed frame. An exhaust fan is fixedly connected to one end of the hollow channel, and an exhaust fan is fixedly connected to the other end. Uniformly distributed heat dissipation fins are fixedly connected to the inner top wall of the hollow channel. An oblique exhaust port and an oblique air inlet are respectively installed on both sides of the outer surface of the cabinet. The exhaust port of the exhaust fan is positioned corresponding to the oblique exhaust port, and the air inlet of the exhaust fan is positioned corresponding to the oblique air inlet. A transformer is fixedly connected to the bottom wall of the cabinet. A capacitor bank is installed above the transformer. An IGBT rectifier-inverter module is fixedly connected to the outer surface of the hollow channel. Both the transformer and the IGBT rectifier-inverter module are electrically connected to the capacitor bank. A controller is fixedly connected to the inner top wall of the cabinet.

[0008] By adopting the above technical solution, the trailer chassis provides a stable load-bearing foundation for the cabinet. The internal fixing frame of the hollow through-type heat dissipation component supports the hollow channel, and exhaust fans and extraction fans are respectively installed at both ends of the channel. External air is drawn in from the oblique air inlet, flows through the evenly distributed heat dissipation fins, and is discharged from the oblique exhaust outlet, forming a directional heat dissipation airflow that runs through the entire cabinet. The transformer is arranged at the bottom of the cabinet, the capacitor bank is installed above the transformer, and the IGBT rectifier inverter module is fixed on the outer surface of the hollow channel. All three are electrically connected to the controller, realizing a compact coupling between the power circuit and the heat dissipation air duct. After the heat is generated, it is immediately absorbed by the heat dissipation fins and carried away by the airflow, avoiding local heat accumulation. The channels inside the oblique exhaust outlet and oblique air inlet are distributed obliquely downwards, which can effectively reduce the probability of rainwater directly entering the cabinet, making it more practical.

[0009] Preferably, the walking assembly includes a trailer chassis, the bottom surface of the cabinet is fixedly connected to the upper surface of the trailer chassis, one end of the trailer chassis is equipped with two symmetrical walking wheels, and the other end of the trailer chassis is fixedly connected to an extension plate;

[0010] By adopting the above technical solution, the trailer chassis, as the load-bearing base of the entire device, can stably support the cabinet and all internal electrical components, ensuring the stability of the overall structure. The wheels at one end of the chassis provide basic support for the movement of the device, and the outward extension plate expands the installation space at the end of the trailer chassis.

[0011] Preferably, the bottom surface of the extension plate is equipped with casters, the upper surface of the extension plate is hinged with a push-pull handle, and one end of the extension plate is fixedly connected with a traction ring;

[0012] By adopting the above technical solutions, the omnidirectional wheels installed at the bottom of the extension plate can work with the walking wheels to achieve multi-directional turning, allowing the device to turn flexibly and position precisely even in airport areas with limited space and narrow passages, reducing the difficulty of on-site movement and positioning. The articulated push-pull handrails can be flexibly adjusted according to the usage scenario, making it convenient for staff to manually push the equipment. When not in use, they can also be folded up for storage, reducing space occupation. The traction rings set at the ends can be connected to external traction equipment, supporting both manual movement and mechanical traction, adapting to the transportation needs under different distances and working conditions.

[0013] Preferably, a crash barrier is fixedly connected to the outer surface of the trailer chassis;

[0014] By adopting the above technical solution, the anti-collision frame fixed on the outside of the trailer chassis can resist the bumps and impacts of surrounding objects during the movement and parking of the device, thus providing physical protection for the trailer chassis and the connected cabinet.

[0015] Preferably, the inner wall of the cabinet is fixedly connected to two symmetrical slide rails, each slide rail is fixedly connected to a servo motor on its bottom surface, each servo motor is fixedly connected to a lead screw at its output end, and each lead screw is threaded to a sleeve block on its outer surface, the outer surface of the sleeve block being slidably connected to the inner wall of the slide rail;

[0016] By adopting the above technical solution, the servo motor drives the lead screw to rotate as a power source, and the screw drive drives the sleeve block to make linear reciprocating motion along the slide rail. The position of the corresponding sleeve block can be flexibly adjusted according to changes in the on-site environment.

[0017] Preferably, each of the slide rails has two guide rods fixedly connected to its inner wall, and the two sleeve blocks are slidably connected to the outer surfaces of the four guide rods respectively;

[0018] By adopting the above technical solution, the guide rods arranged inside the slide rail penetrate the sleeve block, which can limit and guide the moving sleeve block, effectively counteract the radial offset and shaking generated during the screw drive process, and ensure that the sleeve block always slides smoothly along the predetermined path.

[0019] Preferably, a first sealing block and a second sealing block are fixedly connected to the outer surfaces of the two sleeve blocks respectively, with the first sealing block located above the oblique air inlet and the second sealing block located above the oblique exhaust outlet;

[0020] By adopting the above technical solution, the two sleeves are equipped with a first sealing block and a second sealing block, which are respectively arranged to correspond to the oblique air inlet and oblique exhaust outlet. When the equipment stops working or encounters severe weather, the first sealing block and the second sealing block can be moved to seal the oblique air inlet and oblique exhaust outlet, isolating the inside of the cabinet from the external environment, preventing rainwater and moisture from entering the inside of the cabinet through the oblique air inlet and oblique exhaust outlet vents, protecting the internal electrical components from external environmental corrosion, and strengthening the airtight protection capability of the whole machine.

[0021] Preferably, a rain shield is fixedly connected to the upper surface of the cabinet, and a rain sensor electrically connected to the controller is fixedly connected to the outer surface of the rain shield. The electrical components inside the hollow through-type heat dissipation component, transformer, capacitor bank and IGBT rectifier inverter module are all electrically connected to the controller.

[0022] By adopting the above technical solutions, the rain shield on the top of the cabinet can block rainwater from above, reducing the direct splashing of rainwater on the cabinet surface and reducing the probability of moisture seepage from the outside. The rain sensor is electrically linked with the controller, which can sense the external rainfall environment and automatically transmit signals to the controller. The controller then coordinates the operation of the hollow through-type heat dissipation components, realizing the switching between closed air ducts in rainy weather and normal ventilation and heat dissipation in sunny weather, improving the equipment's environmental adaptability. All electrical components of the whole machine are connected to the controller for centralized management.

[0023] Preferably, a switch module is installed on one side of the cabinet, and a sealed cabinet door is provided on the outside of the switch module, which is installed on the outer surface of the cabinet.

[0024] By adopting the above technical solution, the switch module installed on the side of the cabinet can easily control the start and stop of the whole machine, and the sealed cabinet door on the outside can protect the switch module and improve the safety of operation.

[0025] Preferably, the outer surface of the cabinet is fitted with a removable sealing cover.

[0026] By adopting the above technical solution, the detachable sealing cover on the outside of the cabinet can maintain the overall airtightness and protection of the cabinet under normal use, and can be easily disassembled when the equipment needs to be inspected or maintained.

[0027] Beneficial effects

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] This invention provides a trailer-mounted integrated aviation equipment maintenance power supply device. It features a walking assembly with a trailer chassis, wheels, casters, push-pull handles, and a towing ring. The trailer chassis stably supports the cabinet and all internal electrical components. During operation, workers can manually push the device using the push-pull handles, while the wheels and casters facilitate steering and relocation. For long-distance transport, the towing ring can connect to external towing equipment for mechanical towing. This entire walking structure allows the device to move flexibly and quickly approach and position itself in confined airport spaces and temporary parking positions, eliminating the need for dedicated transport vehicles or long-distance power cables. This solves the problems of difficult movement and low emergency support efficiency associated with traditional aviation power equipment. Furthermore, the anti-collision frame added to the outside of the chassis protects against impacts during movement and parking, ensuring structural safety throughout the equipment transport process.

[0030] This invention provides a trailer-mounted integrated aviation equipment maintenance power supply device. It features a hollow, through-type heat dissipation assembly inside the cabinet, supported by a fixed frame to create a hollow channel. This, along with an exhaust fan, a central exhaust fan, and heat dissipation fins, forms a complete directional airflow. During operation, the exhaust fan draws in outside air from the angled inlet, and the airflow continues along the hollow channel. The heat dissipation fins simultaneously absorb the heat generated by the transformer, capacitor bank, and IGBT rectifier / inverter module. Finally, the hot air is discharged from the angled exhaust outlet. This continuous airflow overcomes the drawbacks of traditional distributed heat dissipation methods, such as long paths and broken airflow, effectively avoiding localized heat accumulation in power devices. This allows the equipment to maintain stable high-power operation for extended periods. Furthermore, the angled design of the inlet and exhaust outlets prevents rainwater and debris from entering the cabinet during ventilation, thus initially improving the equipment's outdoor protection capabilities.

[0031] This invention provides a trailer-mounted integrated aviation equipment maintenance power supply device. It incorporates a slide rail, servo motor, lead screw, sleeve, guide rod, and first and second sealing blocks corresponding to the oblique exhaust and intake ports, respectively, on the inner side of the cabinet. Combined with a rain shield and rain sensor on the top of the cabinet, the rain sensor monitors outdoor weather and transmits signals to the controller. In rainy conditions, the controller controls the servo motor to drive the lead screw, causing the sleeve to move smoothly along the slide rail under the limit of the guide rod. This causes the first and second sealing blocks to seal the oblique intake and exhaust ports, respectively. The sealed cabinet door and cover further enhance the overall airtightness of the cabinet, preventing rainwater and moisture from corroding the internal electrical components. In sunny weather, the first and second sealing blocks move upwards to reset, restoring normal ventilation to the air ducts. Combined with the controller's unified management of all electrical components, this improves the equipment's environmental adaptability in complex conditions such as outdoor and open-air environments. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0033] Figure 2 This is a schematic diagram of the overall rear view structure of the present invention;

[0034] Figure 3 This is a partial planar structural schematic diagram of the present invention;

[0035] Figure 4 This is a partial front view schematic diagram of the structure of the present invention;

[0036] Figure 5 This is a partial cross-sectional view of the structure from below.

[0037] Figure 6 This is a partial cross-sectional top view schematic diagram of the present invention;

[0038] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point A in the middle.

[0039] The components include: 1. Walking assembly; 101. Trailer chassis; 102. Walking wheels; 103. Outer plate; 104. Casters; 105. Push-pull handrail; 106. Traction ring; 107. Anti-collision frame; 2. Cabinet; 3. Hollow through-type heat dissipation assembly; 301. Fixing frame; 302. Hollow channel; 303. Exhaust fan; 304. Extraction fan; 305. Heat dissipation fins; 306. Angled exhaust port; 307. Angled air inlet; 308. Slide rail; 309. Servo motor; 310. Lead screw; 311. Sleeve block; 312. Guide rod; 313. First sealing block; 314. Second sealing block; 4. Transformer; 5. Capacitor bank; 6. IGBT rectifier-inverter module; 7. Controller; 8. Rain shield; 9. Rain sensor; 10. Switch module; 11. Sealed cabinet door; 12. Sealing cover plate. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail below.

[0041] Example 1: A trailer-mounted integrated aviation equipment maintenance power supply device, referring to... Figure 1 , Figure 4 , Figure 5 and Figure 6The system includes a walking assembly 1, a cabinet 2, and a hollow, through-type heat dissipation assembly 3. The cabinet 2 is fixedly connected to the top of the walking assembly 1. The hollow, through-type heat dissipation assembly 3 includes a mounting bracket 301 fixedly connected to the inner wall of the cabinet 2. A hollow channel 302 is fixedly connected to the outer surface of the mounting bracket 301. One end of the hollow channel 302 is fixedly connected to an exhaust fan 303, and the other end of the hollow channel 302 is fixedly connected to an extraction fan 304. The inner top wall of the hollow channel 302 is fixedly connected to evenly distributed heat dissipation fins 30. 5. An angled exhaust port 306 and an angled air inlet 307 are respectively installed on both sides of the outer surface of the cabinet 2. The exhaust outlet of the exhaust fan 303 is positioned corresponding to the angled exhaust port 306, and the suction port of the exhaust fan 304 is positioned corresponding to the angled air inlet 307. A transformer 4 is fixedly connected to the bottom wall inside the cabinet 2. A capacitor bank 5 is installed above the transformer 4. An IGBT rectifier-inverter module 6 is fixedly connected to the outer surface of the hollow channel 302. Both the transformer 4 and the IGBT rectifier-inverter module 6 are electrically connected to the capacitor bank 5. The controller 7 is fixedly connected to the inner top wall of the cabinet 2. The trailer chassis 101 provides a stable load-bearing foundation for the cabinet 2. The fixing frame 301 inside the hollow through-type heat dissipation component 3 supports the hollow channel 302, and exhaust fans 303 and extraction fans 304 are respectively installed at both ends of the channel, so that external air is drawn in from the oblique air inlet 307, flows through the evenly distributed heat dissipation fins 305 and is discharged from the oblique exhaust outlet 306, forming a directional heat dissipation airflow that runs through the entire cabinet 2. The transformer 4 is arranged in the cabinet. At the bottom, capacitor bank 5 is installed above transformer 4, and IGBT rectifier-inverter module 6 is fixed on the outer surface of hollow channel 302. All three are electrically connected to controller 7, realizing a compact coupling between power circuit and heat dissipation duct. After heat is generated, it is immediately absorbed by heat dissipation fins 305 and carried away by airflow, avoiding local heat accumulation. The channels inside the inclined exhaust port 306 and inclined air inlet 307 are distributed obliquely downward, which can effectively reduce the probability of rainwater directly entering the interior of cabinet 2, making it more practical.

[0042] Reference Figure 2 , Figure 3 and Figure 4The walking component 1 includes a trailer chassis 101. The bottom surface of the cabinet 2 is fixedly connected to the upper surface of the trailer chassis 101. Two symmetrical walking wheels 102 are installed at one end of the trailer chassis 101, and an extension plate 103 is fixedly connected to the other end of the trailer chassis 101. The trailer chassis 101 serves as the supporting base for the entire device, which can stably support the cabinet 2 and all internal electrical components, ensuring the stability of the entire structure. The wheels 102 at one end of the chassis provide basic support for the movement of the device. The extension plate 103 extends outward to expand the installation space at the end of the trailer chassis 101. A caster wheel 104 is installed on the bottom surface of the extension plate 103, and a push-pull handle 105 is hinged to the upper surface of the extension plate 103. A traction ring 106 is fixedly connected to one end of the extension plate 103. The caster wheel 104 installed at the bottom of the extension plate 103 can cooperate with the wheels 102 to achieve multi-directional turning, allowing the device to turn flexibly and accurately align even in airport areas with limited space and narrow passages, reducing the difficulty of on-site movement and positioning. The push-pull handle 105 can be flexibly adjusted according to the usage scenario, making it convenient for staff to manually push the equipment. When not in use, it can also be folded up for storage, reducing space occupation. The traction ring 106 set at the end can be connected to external traction equipment, supporting both manual movement and mechanical traction, adapting to the transportation needs under different distances and working conditions. The outer surface of the trailer chassis 101 is fixedly connected to the anti-collision frame 107. The anti-collision frame 107 fixed on the outer side of the trailer chassis 101 can resist the bumps and impacts of surrounding objects during the movement and parking of the device, forming physical protection for the trailer chassis 101 and the connected cabinet 2.

[0043] Example 2: A trailer-mounted integrated aviation equipment maintenance power supply device, referring to... Figure 5 , Figure 6 and Figure 7The inner wall of cabinet 2 is fixedly connected to two symmetrical slide rails 308. A servo motor 309 is fixedly connected to the bottom surface of each slide rail 308, and a lead screw 310 is fixedly connected to the output end of each servo motor 309. A sleeve block 311 is threadedly connected to the outer surface of each lead screw 310. The outer surface of the sleeve block 311 is slidably connected to the inner wall of the slide rail 308. The servo motor 309 acts as a power source, driving the lead screw 310 to rotate. Through threaded transmission, the sleeve block 311 moves linearly back and forth along the slide rail 308. The position of the corresponding sleeve block 311 can be flexibly adjusted according to changes in the site environment. The inner wall of each slide rail 308 is fixedly connected to two guide rods 312. The two sleeve blocks 311 are slidably connected to the outer surfaces of the four guide rods 312. The guide rods 312 arranged inside the slide rail 308 penetrate the sleeve blocks 311, providing limiting and guiding functions for the moving sleeve blocks 311, effectively counteracting the excessive transmission of the lead screw 310. The radial offset and shaking generated during the process ensure that the sleeve block 311 always slides smoothly along the predetermined path. The outer surfaces of the two sleeve blocks 311 are respectively fixedly connected with the first sealing block 313 and the second sealing block 314. The first sealing block 313 is located above the oblique air inlet 307, and the second sealing block 314 is located above the oblique exhaust outlet 306. The two sleeve blocks 311 are respectively equipped with the first sealing block 313 and the second sealing block 314, which are respectively arranged corresponding to the oblique air inlet 307 and the oblique exhaust outlet 306. When the equipment stops working or encounters severe weather, the first sealing block 313 and the second sealing block 314 can be moved to block the oblique air inlet 307 and the oblique exhaust outlet 306, isolate the inside of the cabinet 2 from the external environment, prevent rainwater and moisture from entering the inside of the cabinet 2 through the oblique air inlet 307 and the oblique exhaust outlet 306, protect the internal electrical components from external environmental corrosion, and enhance the airtight protection capability of the whole machine.

[0044] Reference Figure 1 , Figure 2 and Figure 4A rain shield 8 is fixedly connected to the upper surface of cabinet 2. A rain sensor 9, electrically connected to controller 7, is fixedly connected to the outer surface of the rain shield 8. The electrical components inside the hollow through-type heat dissipation assembly 3, transformer 4, capacitor bank 5, and IGBT rectifier-inverter module 6 are all electrically connected to controller 7. The rain shield 8 on the top of cabinet 2 can block rainwater from above, reducing the direct splashing of rainwater onto the surface of cabinet 2 and decreasing the probability of moisture infiltration from the outside. The rain sensor 9 is electrically linked to controller 7, sensing the external rainfall environment and automatically transmitting a signal to controller 7. Controller 7 then coordinates the operation of the hollow through-type heat dissipation assembly 3, achieving the switching between closed air ducts in rainy weather and normal ventilation and heat dissipation in sunny weather, thus improving equipment performance. With environmental adaptability, all electrical components of the machine are connected to the controller 7 for centralized management. A switch module 10 is installed on one side of the cabinet 2. The switch module 10 is equipped with a sealed cabinet door 11 on the outside of the cabinet 2. The switch module 10 on the side of the cabinet 2 can easily control the start and stop of the whole machine. The sealed cabinet door 11 on the outside can protect the switch module 10 and improve the safety of operation. A detachable sealing cover 12 is installed on the outer surface of the cabinet 2. The detachable sealing cover 12 on the outside of the cabinet 2 can maintain the overall airtightness and protection of the cabinet 2 under normal use, and can be easily removed when the equipment needs to be inspected and maintained for internal components.

[0045] It should be noted that transformer 4 can be a three-phase dry-type isolation transformer, with a soft-start resistor circuit connected in series between its primary side and the input circuit breaker. This circuit is briefly connected by the bypass contactor controlled by controller 7 when the power is first turned on to suppress the inrush current at the moment of closing. Capacitor bank 5 is composed of multiple electrolytic capacitors connected in parallel and then in parallel with film capacitors. The electrolytic capacitors are used for energy storage and filtering, and the film capacitors are used to absorb the high-frequency ripple generated by the switching action of IGBT rectifier-inverter module 6. The entire capacitor bank 5 is connected to the secondary rectifier output terminal of transformer 4 and the DC bus input terminal of IGBT rectifier-inverter module 6 through copper busbars to achieve low inductance. IGBT rectifier-inverter module 6 integrates a rectifier bridge and an inverter bridge. The rectifier bridge converts the AC power output from transformer 4 into DC power, which is then filtered by capacitor bank 5 and supplied to the inverter bridge. The inverter bridge adopts a three-phase six-arm topology and is driven by the pulse width modulation signal output by controller 7. The output frequency and voltage both meet the aviation ground power supply standard.

[0046] The implementation principle of this application embodiment is as follows: The operator holds the push-pull handle 105 and pushes it forward. The traveling wheels 102 and the omnidirectional wheels 104 jointly support the device and achieve flexible steering, so that the entire trailer chassis 101 and the cabinet 2 are moved to the side of the disabled aircraft. If the distance is far or the road conditions are complicated, the towing ring 106 can also be connected to the airport ground support vehicle for mechanical towing to complete the long-distance transfer. The anti-collision frame 107 continuously plays a buffering and protective role during movement and parking to prevent the cabinet 2 from being accidentally bumped. After the device is in place, the operator opens the sealed cabinet door 11 and then closes the input circuit breaker through the switch module 10 to connect the external power supply. The external power supply is stepped down by the transformer 4. After voltage conversion, the voltage is fed into capacitor bank 5 for filtering and stabilization, and then converted into medium-frequency AC power conforming to aviation standards by IGBT rectifier-inverter module 6. This power is then supplied to airborne maintenance equipment via output circuit breaker. Throughout the power conversion process, controller 7 collects voltage, current, and temperature signals and ensures output stability through closed-loop regulation. Simultaneously, the hollow through-type heat dissipation component 3 starts working. Exhaust fan 304 draws in external air from the oblique air inlet 307. The air flows along the hollow channel 302 and, as it flows through the evenly distributed heat dissipation fins 305 on the inner top wall of the hollow channel 302, it conducts the heat from transformer 4, capacitor bank 5, and IGBT rectifier-inverter module 6 to the heat dissipation fins 305. The hot air is carried away and finally discharged from the angled exhaust port 306 through the exhaust fan 303 outside the cabinet, forming a continuous and smooth directional cooling airflow, effectively avoiding local overheating. The angled design of the air inlet and exhaust port itself can block most of the rainwater from directly entering. When the rain sensor 9 detects rainfall, the controller 7 sends a command to start the servo motor 309. The servo motor 309 drives the lead screw 310 to rotate, and through the threaded transmission, the sleeve block 311 moves downward along the slide rail 308. The guide rod 312 passes through the sleeve block 311 to ensure its smooth sliding without deflection. The first sealing block 313 and the second sealing block 314 descend with the sleeve block 311 to block the angled air inlet 307 and the angled exhaust port 307, respectively. The position of the opening 306 isolates the interior of the cabinet 2 from the outside world. At the same time, the rain shield 8 blocks rainwater splashing from above. The sealed cabinet door 11 and the sealing cover 12 together maintain the overall airtightness of the cabinet 2. After the weather clears up, the controller 7 instructs the servo motor 309 to run in reverse, and the first sealing block 313 and the second sealing block 314 rise and reset, and the air duct returns to normal. At the same time, when the device is not in use, the first sealing block 313 and the second sealing block 314 can be lowered with the sleeve block 311 to block the oblique air inlet 307 and the oblique exhaust outlet 306 respectively. In this way, even if it is left for a long time, rainwater and dust will not enter the interior of the cabinet 2.

Claims

1. A trailer-mounted integrated aviation equipment maintenance power supply unit, comprising a traveling assembly (1), a cabinet (2), and a hollow through-type heat dissipation assembly (3), characterized in that: The cabinet (2) is fixedly connected to the top of the walking assembly (1). The hollow through-type heat dissipation assembly (3) includes a fixing frame (301) fixedly connected to the inner wall of the cabinet (2). A hollow channel (302) is fixedly connected to the outer surface of the fixing frame (301). An exhaust fan (303) is fixedly connected to one end of the hollow channel (302), and an exhaust fan (304) is fixedly connected to the other end of the hollow channel (302). Uniformly distributed heat dissipation fins (305) are fixedly connected to the inner top wall of the hollow channel (302). Angled exhaust ports (306) are installed on both sides of the outer surface of the cabinet (2). The cabinet (2) has an exhaust fan (303) with an outlet corresponding to the oblique exhaust port (306) and an exhaust fan (304) with an intake port corresponding to the oblique air inlet (307). The cabinet (2) has a transformer (4) fixedly connected to the bottom wall. A capacitor bank (5) is installed above the transformer (4). An IGBT rectifier inverter module (6) is fixedly connected to the outer surface of the hollow channel (302). The transformer (4) and the IGBT rectifier inverter module (6) are both electrically connected to the capacitor bank (5). A controller (7) is fixedly connected to the top wall of the cabinet (2).

2. The trailer-mounted integrated aviation equipment maintenance power supply device according to claim 1, characterized in that: The walking assembly (1) includes a trailer chassis (101), the bottom surface of the cabinet (2) is fixedly connected to the upper surface of the trailer chassis (101), one end of the trailer chassis (101) is equipped with two symmetrical walking wheels (102), and the other end of the trailer chassis (101) is fixedly connected with an extension plate (103).

3. The trailer-mounted integrated aviation equipment maintenance power supply device according to claim 2, characterized in that: The bottom surface of the extension plate (103) is equipped with casters (104), the upper surface of the extension plate (103) is hinged with push-pull handles (105), and one end of the extension plate (103) is fixedly connected with a traction ring (106).

4. A trailer-mounted integrated aviation equipment maintenance power supply device according to claim 2, characterized in that: A crash barrier (107) is fixedly connected to the outer surface of the trailer chassis (101).

5. A trailer-mounted integrated aviation equipment maintenance power supply device according to claim 1, characterized in that: The inner wall of the cabinet (2) is fixedly connected to two symmetrical slide rails (308). Each slide rail (308) is fixedly connected to a servo motor (309) on its bottom surface. Each servo motor (309) is fixedly connected to a lead screw (310) at its output end. Each lead screw (310) is threadedly connected to a sleeve block (311) on its outer surface. The outer surface of the sleeve block (311) is slidably connected to the inner wall of the slide rail (308).

6. A trailer-mounted integrated aviation equipment maintenance power supply device according to claim 5, characterized in that: Two guide rods (312) are fixedly connected to the inner wall of each of the slide rails (308), and two sleeve blocks (311) are slidably connected to the outer surfaces of the four guide rods (312).

7. A trailer-mounted integrated aviation equipment maintenance power supply device according to claim 6, characterized in that: The outer surfaces of the two sleeve blocks (311) are respectively fixedly connected with a first sealing block (313) and a second sealing block (314). The first sealing block (313) is located above the oblique air inlet (307), and the second sealing block (314) is located above the oblique exhaust outlet (306).

8. A trailer-mounted integrated aviation equipment maintenance power supply device according to claim 1, characterized in that: The upper surface of the cabinet (2) is fixedly connected to a rain shield (8), and the outer surface of the rain shield (8) is fixedly connected to a rain sensor (9) that is electrically connected to the controller (7). The electrical components inside the hollow through-type heat dissipation assembly (3), transformer (4), capacitor bank (5) and IGBT rectifier inverter module (6) are all electrically connected to the controller (7).

9. A trailer-mounted integrated aviation equipment maintenance power supply device according to claim 1, characterized in that: A switch module (10) is installed on one side of the cabinet (2), and a sealed cabinet door (11) is provided on the outside of the switch module (10). The sealed cabinet door (11) is installed on the outer surface of the cabinet (2).

10. A trailer-mounted integrated aviation equipment maintenance power supply device according to claim 1, characterized in that: The outer surface of the cabinet (2) is fitted with a removable sealing cover (12).

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