A protective and fast-running air ventilation device and its ventilation method

Abstract

The present invention discloses a protective fast-running air ventilation device and its ventilation method, which includes a box body (1), an air intake device (2), and an exhaust device (4). The air intake device (2) is arranged on the side of the box body (1), and the exhaust device (4) is arranged on the top of the box body (1). When the moving speed of the box body (1) reaches a predetermined value, under the action of the fast-running air, the air intake device (2) and the exhaust device (4) can be automatically opened to realize the ventilation of the interior of the box body (1). When the rail transit vehicle reaches a certain speed, by using the fast-running air, the air inlet inside the side air intake device is opened, and the outside air enters the cabin through the filter cotton. At the same time, the exhaust device at the top is also opened to discharge the hot air in the cabinet. By introducing air at one end and exhausting air at the other end, the temperature of the air in the interior cabin is quickly reduced. When the vehicle speed reaches the normal speed, the air inlets of the air intake device and the exhaust device are closed, thereby achieving a sealed effect.

Description

Technical Field

[0001] The present invention belongs to the field of rail transit, and particularly relates to a protective rapid air change device for a walking wind and its air change method. Background Art

[0002] At present, in the field of rail transit, the equipment suspended under the vehicle (here referring to the type of converter, which is a device with high heat dissipation requirements) is becoming more and more lightweight, miniaturized and compact. This has greatly improved the space utilization rate inside the equipment, and then led to a compact and relatively crowded internal layout. When the internal power modules (such as charging modules, inverter modules, rectifier modules, etc.) are working, except that the fins of the radiator substrate at the lower end of the power module are in the air duct and the air flow can be formed by the fan to take away the heat, the power modules that are too concentrated inside the sealed cabin, commonly known as the non-air duct area (that is, the area above the radiator substrate, and this part is isolated and sealed from the air duct), will continuously generate heat during operation (such as copper bars conducting large currents, heating devices that have not completely transferred heat to the radiator, heat on the surface of the radiator substrate, etc.). As a result, the air temperature in the sealed cabin will rise rapidly. In the high-temperature state in summer (generally 32 - 40 degrees Celsius), the air temperature in the internal sealed cabin will reach 55 - 65 degrees Celsius. If the internal environment of the cabin is in such a high-temperature state for a long time, it will affect the reliability and safety of electrical equipment. Another situation is that some electrical components installed inside the box will cause the rapid expansion of the gas inside the cabin in case of overload or short circuit, resulting in the inability of the sealed cabin to quickly discharge the gas, causing the cabin to be under great pressure of gas expansion, resulting in the deformation of the cabin or the detachment of the door panel and cover plate. In view of the above situations, usually an air vent valve is set on the side of the cabin (the principle of the air vent valve is a breathing film that can filter air, enabling the internal air of the cabin to interact with the external atmospheric air and isolating rainwater, dust, etc. At the same time, some models also consider the setting of a spring air valve, so that when the internal pressure of the cabin reaches a certain value, the spring air valve is pushed open and the internal gas is released); or a ventilation hood is set on the top of the cabin (the principle is to use the air pressure generated by the internal high temperature to discharge it from the inner side of a certain maze-shaped waterproof cover). The above two common air change forms both have certain deficiencies. For the first type of air vent valve, the air change volume is small, the unit cost is high, and multiple pieces need to be installed in one cabin, and it cannot solve the problem of rapid cooling inside the cabin in a high-temperature environment. For the second type of ventilation hood structure on the top, the long-term open ventilation area will cause dust to enter, affecting the cleanliness inside the cabin, and it does not have the function of instantaneously discharging a large area of expanded gas when the gas inside the cabin instantaneously expands. Summary of the Invention

[0003] The present invention provides a protective fast-running wind ventilation device and a ventilation method thereof. When a rail transit vehicle reaches a certain speed, the fast-running wind is utilized, and the internal air inlet of the side air intake device is opened, and the external air enters the cabin through the filter cotton. At the same time, the exhaust device on the top is also opened to discharge the hot air in the cabinet. The air in the internal cabin is quickly cooled by taking in air at one end and exhausting air at the other end. When the vehicle speed reaches a normal speed, the air inlet of the air intake device and the exhaust device are closed, thereby achieving a sealed effect.

[0004] The technical solutions to achieve the above objectives are:

[0005] A protective fast-moving air exchange device comprises a box body, an air intake device and an exhaust device.

[0006] The air intake device is arranged on the side of the box, and the exhaust device is arranged on the top of the box. When the movement speed of the box reaches a predetermined value, under the action of the running wind, the air intake device and the exhaust device can automatically open to realize ventilation inside the box.

[0007] Furthermore, the air intake device includes an air intake hood, an isolation plate, flame-retardant filter cotton, a linkage plate assembly, and a circular air bag. A linkage plate assembly and a circular air bag are respectively installed at the front and rear of the air intake hood. The isolation plate is installed in the middle of the air intake hood. The flame-retardant filter cotton is arranged in the isolation plate. When the movement speed of the box reaches a predetermined value, the circular air bag on the windward side can drive the linkage plate assembly to open after gas is filled, so that the airflow can enter the air intake hood and pass through the isolation plate and the flame-retardant filter cotton into the box.

[0008] Furthermore, the exhaust device includes an exhaust hood, a driving rod arranged on the left and right sides of the exhaust hood, a flip bracket and a long air bag. When the movement speed of the box reaches a predetermined value, the long air bag on the windward side is filled with gas and can drive the flip bracket to push the driving rod. The driving rod and the top surface of the box form a reverse lever prying principle, so that the windward side of the exhaust hood falls and the leeward side rises to form an exhaust port. The airflow in the box can be discharged to the outside of the box from the exhaust port between the leeward side of the exhaust hood and the top surface of the box.

[0009] Furthermore, it also includes a door panel, an exhaust pipe and a movable cover plate, the door panel is provided with a door panel air inlet hole and is arranged on the side of the box body, the air intake device is arranged on the door panel, the movable cover plate is arranged on the top of the box body, the exhaust pipe is arranged on the movable cover plate, the movable cover plate and the exhaust pipe have air outlet holes at positions corresponding to the exhaust pipe, the exhaust device is arranged on the exhaust pipe, and the exhaust pipe rubber strip is arranged on the top surface of the exhaust pipe.

[0010] Further, the air intake device further includes a grille plate, a flipping pressure plate, a fixing plate, and a sealing strip plate. The fixing plate and the sealing strip plate are disposed on the outer side of the air intake hood. The flipping pressure plate can press the flame retardant filter cotton onto the grille plate. Air intake holes are respectively formed on both sides of the isolation plate. The linkage plate assembly includes a sealing plate, an air intake strip plate, an air intake grille plate, a linkage rod, and a flipping plate. The flipping plate is hinged to the air intake grille plate. The air intake strip plate is located on the back of the air intake grille plate. The lower part of the sealing plate is hinged to the air intake grille plate. The bottom of the linkage rod is hinged to the flipping plate, and the top passes through the air intake grille plate and is connected to the upper part of the air intake strip plate. The circular air bag is fixed to the flipping plate, and a flipping plate inflation hole is provided on the flipping plate.

[0011] Further, the exhaust device further includes nylon pulleys, limit studs, mounting brackets, small rotating studs, large rotating studs, and M4 fixing screws. A mounting bracket is fixedly installed on each side of the front and rear ends of the exhaust hood. The flipping bracket is hinged to the two mounting brackets at the corresponding end. The long air bag is installed on the flipping bracket. A rotating hole is provided at one end of the driving rod, and the other end includes a sliding section. The small rotating stud passes through the rotating hole and is threadedly connected to both sides of the flipping bracket so that one end of the driving rod is hinged to the flipping bracket. The end of the sliding section is an extrusion section, and the upper surface of the sliding section presses the surface of the inner groove of the nylon pulley. The nylon pulley is fixed to both sides of the exhaust hood by the large rotating stud. The limit studs are fixed to both sides of the exhaust hood. The middle part of the driving rod is located in the gap between the limit stud and the exhaust hood.

[0012] Further, the exhaust device further includes two upper and lower rotating shafts and an exhaust device mounting bracket that are fixed to both sides of the top of the exhaust hood by M4 fixing screws. The bottom of the exhaust device mounting bracket is fixed to the movable cover plate, and a movable waist-shaped hole is provided in the upper part. The upper and lower rotating shafts pass through the movable waist-shaped hole.

[0013] Further, there are two groups of the air intake devices, which are respectively disposed on both side surfaces of the box body.

[0014] Further, the predetermined value is 80 km / h.

[0015] According to the air exchange method of the above-mentioned protective fast-running air ventilation device, the device is installed inside a vehicle.

[0016] When the moving speed of the vehicle is lower than a predetermined value, both the intake device and the exhaust device are in a closed state. When the moving speed of the vehicle reaches the predetermined value, the fast-running air flow increases. The round air bag is impacted by air pressure, filled and then squeezed, forming a large pressure and remaining suspended without falling. Subsequently, it drives the flip plate to drive the linkage rod to push the closed plate to open, enabling the air flow to reach the other side of the isolation plate through the channel and enter the intermediate inner cabin area through the intake holes of the isolation plate. Then it passes through the filter cotton intake holes of the grille plate, the flame-retardant filter cotton, and the filter cotton outlet holes of the flip pressing plate, and finally reaches the interior of the compartment of the under-vehicle equipment;

[0017] At the same time when the moving speed of the vehicle reaches the predetermined value, the long air bag is impacted by air pressure, filled and then squeezed, forming a large pressure and remaining suspended without falling. Subsequently, it drives the flip bracket to push the sliding section of the driving rod to squeeze the inner groove surface of the nylon pulley, making the squeezing section contact the surface of the movable cover plate, forming a lever reverse prying state, causing the windward end of the exhaust hood to fall and the leeward surface to rise to form an exhaust port. At this time, the lower edge of the windward end of the exhaust hood is closed with the surface of the movable cover plate and the falling section inside the exhaust hood is fitted with the edge of the exhaust rubber strip of the exhaust pipe, greatly reducing the probability of dust being filled from the windward surface. At this time, the gas entering the interior of the compartment through the intake device is discharged outside the vehicle through the exhaust port;

[0018] When the moving speed of the vehicle drops below the predetermined value again, the flip bracket of the exhaust device automatically falls back to its original position due to the self-gravity of the inclined plane, and then the inner side of the exhaust device is fitted with the exhaust pipe to achieve closure; while the flip plate of the intake device automatically falls due to gravity when the running air flow is small, and then the closed plate is closed to form a sealed cabin.

[0019] Compared with the prior art, the advantages of the present invention include:

[0020] (1) The present invention adopts a side-mounted intake device and a top-mounted exhaust device, effectively preventing the probability of harmful substances such as rainwater and dust from entering the cabin during the operation of daily equipment, and achieving that when the rail transit vehicle reaches a certain speed, by using the fast-moving wind (for example, when the speed reaches 80 kilometers per hour, there will be a short period of 10 - 20 seconds, and the process of vehicle acceleration is also the process of continuous operation of internal power devices, and the air temperature inside the sealed cabin will continue to rise), the intake opening inside the side-mounted intake device opens, and the external air passes through a series of labyrinths and finally enters the cabin through the filter cotton. At the same time, the top-mounted exhaust device also opens when the vehicle reaches a certain speed, discharging the hot air inside the cabinet. By taking in air at one end and exhausting air at the other end, the temperature of the air inside the cabin is quickly reduced. When the vehicle speed reaches the normal average speed (normally 40 - 60 kilometers per hour, which is the operating speed with the largest proportion during operation), the intake device and the exhaust device close their air openings, thereby achieving a sealed effect. When the gas inside the cabin expands rapidly, the expanded gas pushes open the top-mounted exhaust device, forming a large exhaust opening area and quickly discharging the gas to complete pressure relief, thus ensuring the safety of the cabin body.

[0021] (2) The structural features of the present invention are: rapid air exchange, low cost, using the short-term fast-moving wind to achieve the opening and closing of the air openings, an air bag structure for increasing thrust, a lever structure for reverse windward exhaust, structural miniaturization, and a large-opening explosion-proof structure. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall protective fast-moving wind ventilation device.

[0023] Figure 2 It is a diagram showing the device filled with components inside.

[0024] Figure 3 It is an explosion diagram of the exhaust pipe.

[0025] Figure 4 It is Figure 3 The partial enlarged view in

[0026] Figure 5 It is a schematic diagram of the installation state of the exhaust device.

[0027] Figure 6 It is a schematic diagram of the large explosion-proof opening.

[0028] Figure 7 It is Figure 6 The partial enlarged view in

[0029] Figure 8 It is Figure 7 The sectional view in the E - E direction in

[0030] Figure 9 It is a schematic diagram of the installation and disassembly of the air intake device.

[0031] Figure 10 It is a sectional view of the assembly of the air intake device and the door panel.

[0032] Figure 11 It is an exploded view of the air intake device.

[0033] Figure 12 It is a schematic diagram of the plane of the air intake airflow.

[0034] Figure 13 For Figure 12 Sectional view in the direction of B-B in

[0035] Figure 14 It is a three-dimensional schematic diagram of the air intake airflow.

[0036] Figure 15 It is a schematic diagram of the structure of the air intake hood.

[0037] Figure 16 It is a schematic diagram of the flipping of the flipping pressure plate.

[0038] Figure 17 It is a schematic diagram of inserting or removing the flame-retardant filter cotton.

[0039] Figure 18 It is the front view of the air intake hood.

[0040] Figure 19 For Figure 18 Sectional view in the direction of C-C in

[0041] Figure 20 It is a schematic diagram of the structure of the linkage plate assembly.

[0042] Figure 21 It is an exploded view of the structure of the linkage plate assembly.

[0043] Figure 22 It is a schematic diagram of the structure of the round airbag.

[0044] Figure 23 It is a schematic diagram of the structure of the partition board.

[0045] Figure 24 It is a schematic diagram of the structure of the combustion filter cotton.

[0046] Figure 25 It is a schematic diagram of the structure of the grille plate.

[0047] Figure 26 It is a schematic diagram of the structure of the flipping pressure plate.

[0048] Figure 27 It is a schematic diagram of the structure of the fixing plate.

[0049] Figure 28It is a schematic diagram of the exhaust device structure.

[0050] Figure 29 It is a schematic diagram of the exhaust device in the open state.

[0051] Figure 30 It is an exploded view of the exhaust device structure.

[0052] Figure 31 It is a schematic diagram of the exhaust hood structure.

[0053] Figure 32 It is a schematic diagram of the driving rod structure.

[0054] Figure 33 It is a schematic diagram of the small rotating stud structure.

[0055] Figure 34 It is a schematic diagram of the large rotating stud structure.

[0056] Figure 35 It is a schematic diagram of the limit stud structure.

[0057] Figure 36 It is the front view of the nylon pulley.

[0058] Figure 37 It is the side view of the nylon pulley.

[0059] Figure 38 It is a schematic diagram of the mounting bracket structure.

[0060] Figure 39 It is a schematic diagram of the upper and lower rotating shafts structure.

[0061] Figure 40 It is a schematic diagram of the flipping bracket structure.

[0062] Figure 41 It is a schematic diagram of the long airbag structure.

[0063] Figure 42 It is the schematic diagram of the reverse lever prying principle.

[0064] Figure 43 For Figure 42 The partial enlarged view in

[0065] Figure 44 It is a schematic diagram of the air flow of the exhaust device.

[0066] Figure 45 It is a schematic diagram of the partial air flow of the exhaust device.

[0067] Figure 46 For Figure 44 The sectional view taken along the D-D direction in

[0068] Figure 47 For Figure 46 The partial enlarged view in

[0069] Reference numerals in the figures: box body 1; air intake device 2; air intake hood 2-1; left and right air intake ports 2-1-1; outer cabin water leakage holes 2-1-2; inner cabin water leakage holes 2-1-3; partition board 2-2; partition board air intake hole 2-2-1; partition board bushing 2-2-2; grille board 2-3; filter cotton air intake hole 2-3-1; flame retardant filter cotton 2-4; flipping pressure plate 2-5; pressure plate shaft 2-5-1; flipping avoidance inclined plane 2-5-2; filter cotton air outlet hole 2-5-3; positioning edge 2-5-4; fixing plate 2-6; bolt fixing hole 2-6-1; airbag installation hole 2-6-2; water vapor sliding edge 2-6-3; filter cotton installation hole 2-6-4; sealing strip board 2-7; linkage plate assembly 2-8; sealing plate 2-8-1; sealing plate shaft 2-8-1-1; air intake strip board 2-8-2; air intake grille board 2-8-3; linkage rod 2-8-4; flipping plate 2-8-5; flipping plate bushing 2-8-5-1; flipping plate air inflation hole 2-8-5-2; flipping plate shaft 2-8-5-3; airbag fixing hole 2-8-5-4; round airbag 2-9; airbag threaded hole 2-9-1; airbag air intake hole 2-9-2; airbag telescopic section 2-9-3; M3 fastening screw 2-10; door panel 3; door panel air intake hole 3-1; exhaust device 4; exhaust hood 4-1; upper and lower rotating shaft threaded holes 4-1-1; mounting bracket threaded holes 4-1-2; large rotating stud threaded holes 4-1-3; small rotating stud threaded holes 4-1-4; upper and lower rotating shafts 4-2; upper and lower rotating shaft external thread sections 4-2-1; mounting cushion plate 4-2-2; cylindrical section 4-2-3; nylon pulley 4-3; nylon pulley through hole 4-3-1; inner groove 4-3-2; driving rod 4-4; sliding section 4-4-1; extrusion section 4-4-2; rotating hole 4-4-3; limit stud 4-5; external thread section 4-5-1; cylindrical section 4-5-2; mounting bracket 4-6; stop inclined plane 4-6-1; fixing hole 4-6-2; avoidance R corner 4-6-3; rotating hole 4-6-4; small rotating stud 4-7; external thread section 4-7-1; cylindrical section 4-7-2; flipping bracket 4-8; long airbag air inflation hole 4-8-1; long airbag fixing hole 4-8-2; flipping bracket shaft 4-8-3; small rotating stud fixing nut 4-8-4; long airbag 4-9; airbag threaded hole 4-9-1; airbag air intake hole 4-9-2; airbag telescopic section 4-9-3; large rotating stud 4-10; external thread section 4-10-1; cylindrical section 4-10-2; M4 fixing screw 4-11; exhaust pipe 5; exhaust pipe rubber strip 5-1; mounting frame 6; nut fixing hole 6-1; movable waist-shaped hole 6-2; movable cover plate 7; air outlet hole 7-1; fixing screw 7-2; air intake device mounting bolt 8; nut washer 9. Detailed implementation manners

[0070] Combined with Figure 1-47, a protective fast-running air ventilation device, comprising a box body 1, an air intake device 2, and an exhaust device 4,

[0071] The air intake device 2 is arranged on the side of the box body 1, and the exhaust device 4 is arranged on the top of the box body 1. When the moving speed of the box body 1 reaches a predetermined value, under the action of the running wind, the air intake device 2 and the exhaust device 4 can be automatically opened to realize the ventilation inside the box body 1.

[0072] Specifically, in combination with Figure 9-27 , the air intake device 2 includes an air intake hood 2-1, a partition plate 2-2, a flame-retardant filter cotton 2-4, a linkage plate assembly 2-8, and a circular air bag 2-9. A linkage plate assembly 2-8 and a circular air bag 2-9 are respectively installed at the front and back inside the air intake hood 2-1. The partition plate 2-2 is installed in the middle of the air intake hood 2-1. The flame-retardant filter cotton 2-4 is arranged inside the partition plate 2-2. When the moving speed of the box body 1 reaches a predetermined value, after the circular air bag 2-9 on the windward side is filled with gas, it can drive the linkage plate assembly 2-8 to open, so that the air flow can enter the air intake hood 2-1 and pass through the partition plate 2-2 and the flame-retardant filter cotton 2-4 into the box body.

[0073] The air intake device 2 further includes a grille plate 2-3, a flip pressing plate 2-5, a fixing plate 2-6, and a sealing rubber strip plate 2-7. The fixing plate 2-6 and the sealing rubber strip plate 2-7 are arranged on the outside of the air intake hood 2-1. The flip pressing plate 2-5 can press the flame-retardant filter cotton 2-4 onto the grille plate 2-3. Air intake holes 2-2-1 are respectively formed on both sides of the partition plate 2-2. The linkage plate assembly 2-8 includes a closed plate 2-8-1, an air intake rubber strip plate 2-8-2, an air intake grille plate 2-8-3, a linkage rod 2-8-4, and a flip plate 2-8-5. The flip plate 2-8-5 is hinged to the air intake grille plate 2-8-3. The air intake rubber strip plate 2-8-2 is located on the back of the air intake grille plate 2-8-3. The lower part of the closed plate 2-8-1 is hinged to the air intake grille plate 2-8-3. The bottom of the linkage rod 2-8-4 is hinged to the flip plate 2-8-5, and the top passes through the air intake grille plate 2-8-3 and is connected to the upper part of the closed plate 2-8-1. The circular air bag 2-9 is fixed to the flip plate 2-8-5, and a flip plate inflation hole 2-8-5-2 is arranged on the flip plate 2-8-5.

[0074] Specifically, in combination with Figure 3-8, 28 - 41, the exhaust device 4 includes an exhaust hood 4-1, drive rods 4-4, flip brackets 4-8 and long air bags 4-9 arranged on the left and right sides of the exhaust hood 4-1. When the moving speed of the box body 1 reaches a predetermined value, after the long air bag 4-9 on the windward side is filled with gas, it can drive the flip bracket 4-8 to push the drive rod 4-4. The drive rod 4-4 and the top surface of the box body 1 form a reverse lever prying principle, so that the windward surface of the exhaust hood 4-1 drops and the leeward surface rises to form an exhaust port, and the air flow in the box body 1 can be discharged from the box body 1 through the exhaust port between the leeward surface of the exhaust hood 4-1 and the top surface of the box body 1.

[0075] Specifically, it further includes a door panel 3, an exhaust pipe 5 and a movable cover plate 7. The door panel 3 is provided with a door panel air inlet hole 3-1 and is arranged on the side of the box body 1. The air inlet device 2 is arranged on the door panel 3. The movable cover plate 7 is arranged on the top of the box body 1. The exhaust pipe 5 is arranged on the movable cover plate 7. The movable cover plate 7 is provided with an air outlet hole 7-1 at a position corresponding to the exhaust pipe 5. The exhaust device 4 is arranged on the exhaust pipe 5. The top surface of the exhaust pipe 5 is provided with an exhaust pipe rubber strip 5-1.

[0076] Specifically, the exhaust device 4 further includes nylon pulleys 4-3, limit studs 4-5, mounting brackets 4-6, small rotating studs 4-7, large rotating studs 4-10, and M4 fixing screws 4-11. Two mounting brackets 4-6 are respectively and fixedly installed on both sides of the front and rear ends of the exhaust hood 4-1. The flip bracket 4-8 is hinged to the two mounting brackets 4-6 at the corresponding end. The long air bag 4-9 is installed on the flip bracket 4-8. One end of the drive rod 4-4 is provided with a rotating hole 4-4-3, and the other end includes a sliding section 4-4-1. The small rotating stud 4-7 passes through the rotating hole 4-4-3 and is threadedly connected to both sides of the flip bracket 4-8 so that one end of the drive rod 4-4 is hinged to the flip bracket 4-8. The end of the sliding section 4-4-1 is an extrusion section 4-4-2. The upper surface of the sliding section 4-4-1 extrudes the surface of the inner groove 4-3-2 of the nylon pulley 4-3. The nylon pulley 4-3 is fixed to both sides of the exhaust hood 4-1 by the large rotating stud 4-10. The limit stud 4-5 is fixed to both sides of the exhaust hood 4-1. The middle part of the drive rod 4-4 is located in the gap between the limit stud 4-5 and the exhaust hood 4-1.

[0077] Specifically, the exhaust device 4 further includes two upper and lower rotating shafts 4-2 fixed to both sides of the top of the exhaust hood 4-1 by M4 fixing screws 4-11 and an exhaust device mounting bracket 6. The bottom of the exhaust device mounting bracket 6 is fixed to the movable cover plate 7, and the upper part is provided with a movable waist-shaped hole 6-2. The upper and lower rotating shafts 4-2 pass through the movable waist-shaped hole 6-2.

[0078] Specifically, the intake device 2 includes two groups, which are respectively arranged on both sides of the box body 1.

[0079] Specifically, the predetermined value is 80 km / h.

[0080] The related assembly process of the device of the present invention includes:

[0081] Assemble the intake device 2, and the assembly process is as follows:

[0082] First, assemble and weld the two groups of linkage plate assemblies 2-8 according to design requirements; secondly, after assembling the partition plate 2-2, the grille plate 2-3, and the flip pressure plate 2-5, weld them at the middle position inside the intake hood 2-1. Then, weld the two groups of linkage plate assemblies 2-8 on its left and right sides. The above uses intermittent welding and is sealed with sealant; finally, intermittently weld the fixing plate 2-6 on the outside of the intake hood 2-1 (sealed with sealant), bond the seal strip plate 2-7, then insert the customized round airbag 2-9 through the airbag mounting hole 2-6-2 of the fixing plate 2-6, and use M3 fastening screws 2-10 to fix the customized round airbag 2-9 through the left and right air inlets 2-1-1 in the intake hood 2-1; in addition, after flipping the flip pressure plate 2-5, the flame-retardant filter cotton 2-4 can be inserted, then close the flip pressure plate 2-5, compress the 8mm filter cotton to a thickness of 2mm, and thus complete the assembly of the entire intake device 2.

[0083] Assemble the exhaust device 4, and the assembly process is as follows:

[0084] First, install two sets of upper and lower rotating shafts 4-2 on the upper and lower rotating shaft threaded holes 4-1-1 of the exhaust hood 4-1 respectively through M4 fixing screws 4-11. Then, insert the rotating shaft 4-8-3 of the two sets of flipping brackets 4-8 into the rotating holes 4-6-4 of the four mounting brackets 4-6 (symmetric parts) respectively. Next, install the four mounting brackets 4-6 (symmetric parts) in the mounting bracket threaded holes 4-1-2 of the exhaust hood 4-1 through M4 fixing screws 4-11. Then, pass the small rotating stud 4-7 through the rotating hole 4-4-3 of the driving rod 4-4, and then screw it into the small rotating stud fixing nut 4-8-4 through the external thread section 4-7-1. At this moment, there is a gap between the cylindrical section 4-7-2 of the small rotating stud 4-7 and the flipping bracket 4-8, and this gap is larger than the thickness of the driving rod 4-4. Secondly, pass the large rotating stud 4-10 through the through hole 4-3-1 of the nylon pulley 4-3. At this moment, fasten it through the external thread section 4-10-1 and the large rotating stud threaded hole 4-1-3, and the cylindrical section 4-10-2 abuts against the side of the exhaust hood 4-1 to form a gap, and this gap is larger than the thickness of the nylon pulley 4-3. Similarly, fasten the limit stud 4-5 on the side of the exhaust hood 4-1 through the external thread section 4-5-1, and the cylindrical section 4-5-2 abuts against the side to form a gap, and this gap is larger than the thickness of the driving rod 4-4. At this time, the driving rod 4-4 is located in the inner groove 4-3-2 of the nylon pulley 4-3, and the gap of this inner groove is larger than the thickness of the driving rod 4-4. Finally, fasten the M4 fixing screw 4-11 through the long airbag fixing hole 4-8-2 of the flipping bracket 4-8 and the airbag threaded hole 4-9-1 of the customized long airbag 4-9. Thus, the assembly of the exhaust device is completed;

[0085] Fasten the intake device 2 to the door panel 3 through the intake device mounting bolts 8. Since a sealing rubber strip plate 2-7 is provided on the door panel side of the intake device 2, it then plays a sealing role;

[0086] Place the exhaust device 4 on the exhaust pipe 5 (the exhaust pipe 5 is connected or riveted by screws and is penetrated with the air outlet hole 7-1 of the movable cover plate 7 by applying sealing glue). The inner side of the upper part of the exhaust device 4 is attached to the exhaust pipe rubber strip 5-1. Then, place the exhaust device mounting bracket 6, let the cylindrical section 4-2-3 of the upper and lower rotating shafts 4-2 pass through the outside of the movable waist hole 6-2, and then fasten the external thread section 4-2-1 of the upper and lower rotating shafts through the nut washer 9. At the same time, the nut fixing hole 6-1 of the exhaust device mounting bracket 6 falls into the fixing screw 7-2 of the movable cover plate 7, and also fasten it with the nut washer 9. Thus, the combination of the exhaust device and the exhaust pipe 5 is completed.

[0087] The operation method and principle of the device of the present invention are described as follows:

[0088] First, when the rail transit vehicle is in operation, it travels back and forth without turning around. The direct effect is that when the under-vehicle equipment (the equipment suspended under the bottom girder of the rail transit vehicle) travels from point A to point B along with the vehicle, a large amount of air flow will hit the right side of the under-vehicle equipment, and when traveling from point B to point A, a large amount of air flow will hit the left side of the under-vehicle equipment. The above can be commonly called the passing air flow.

[0089] The operating speed of rail transit in most cities (here referring to the most common driving speed in the entire operating section) is 40 - 60 kilometers per hour. At this time, the under-vehicle equipment works relatively stably. In the case of high temperature in summer, during the acceleration stage (speed of 80 kilometers per hour), the temperature in the closed cabin of the under-vehicle equipment will continue to rise. When exchanging heat with the external air through the shell of the cabin, the efficiency is very low and cannot offset the influence of the continuous high temperature inside. At this moment, it is necessary to directly introduce external air and discharge the internal hot gas, and then quickly complete the mixing and discharge of hot and cold gases. Under normal operating speed, there is no need to introduce external air and discharge internal hot air, which can ensure the airtight environment of the cabin in most cases.

[0090] The intake device 2 of the present invention mainly uses a customized circular airbag 2-9 (an airbag structure formed by a flame-retardant material airbag). When there is a fast passing air flow (such as a speed of 80 kilometers per hour), during the period of fast passing air flow (the period generally lasts for 10 - 20 seconds), the airbag is impacted by air pressure, filled, and then squeezed and expanded to form a large pressure and keep from falling. Then, it drives the turning plate 2-8-5 to drive the linkage rod 2-8-4 to push the opening of the sealing plate 2-8-1, so that the air flow can reach the other side of the partition plate 2-2 through the channel and enter the middle inner cabin area through the partition plate intake hole 2-2-1 of the partition plate 2-2, and then pass through the filter cotton intake hole 2-3-1 of the grille plate 2-3, the flame-retardant filter cotton 2-4, and the filter cotton outlet hole 2-5-3 of the turning pressure plate 2-5, and finally reach the inside of the cabin of the under-vehicle equipment (at this time, the air outlet of the exhaust device 4 at the top of the cabin of the under-vehicle equipment is also open, and then a state of one-in and one-out is formed, and the air flow state after the internal gas is mixed), as Figure 12-14 shown.

[0091] The top exhaust device 4 of the present invention also adopts a customized long airbag 4-9 (an airbag structure formed by a flame-retardant material airbag). When the vehicle is moving at a high speed (e.g., 80 km / h), during the period of high-speed wind (which generally lasts for 10 - 20 seconds), the airbag is impacted by the air pressure, filled, and then squeezed and expanded, forming a large pressure and staying in place without falling. Subsequently, it drives the flipping bracket 4-8 to push the sliding section 4-4-1 of the driving rod 4-4 to squeeze the inner groove 4-3-2 surface of the nylon pulley 4-3, so that the squeezing section 4-4-2 contacts the surface of the movable cover plate 7, forming a lever principle in the reverse direction, which can make the windward end exhaust hood 4-1 fall, and then make the edge of the windward end of the exhaust hood 4-1 close to the surface of the movable cover plate 7 and the falling section inside the exhaust hood 4-1 fit with the edge of the exhaust rubber strip 5-1 of the exhaust pipe 5 (as Figure 42-43 ), and the most direct effect is to greatly reduce the probability of dust being poured in from the windward side. At the same time, it also increases the effect that the hot air flow inside the cabin can quickly flow along with the external wind.

[0092] The explosion-proof design of the present invention (combined with Figure 6-8 ) is as follows: Under normal circumstances, when the vehicle speed reaches 80 km / h, the exhaust hood 4-1 and the exhaust pipe 5 form an inclined triangular air outlet structure (as Figure 42-43 ), or when the vehicle speed is lower than 80 km / h, the exhaust hood 4-1 fits with the entire surface of the exhaust rubber strip 5-1 of the exhaust pipe 5 to form a dust-proof and airtight structure; when the air pressure inside the cabin rises rapidly, the huge air pressure pushes open the exhaust device 4, and through the movable waist hole 6-2 in the exhaust device mounting bracket 6, it moves upward to form a large-area open state, and then the internal air pressure is quickly released to reduce the explosion risk caused by instantaneous expansion;

[0093] In addition, due to the factor of its own gravity set by the inclined plane of the flipping bracket 4-8 of the exhaust device, when the crosswind is small, it automatically falls and returns to its original position, and then the inner side of the exhaust device 4 fits with the exhaust hood 5. At this time, there is a 1-mm gap reserved directly between the exhaust device 4 and the movable cover plate 7. When the crosswind is small, the flipping plate 2-8-5 of the intake device 2 also automatically falls due to the factor of gravity, and then the closing plate 2-8-1 closes to form a sealed cabin. Secondly, the function of the outer cabin water leakage hole 2-1-2 is to eliminate a part of the water vapor when operating in a rain (or high air humidity) environment so that it can flow out. (During normal operation, since the equipment is located at the bottom of the vehicle, the probability of being directly impacted by rain is very small). The function of the inner cabin water leakage hole 2-1-3 can filter and drain a part of the water vapor for the second time, and then ensure that when passing through the flame-retardant filter cotton 2-4, the content of water vapor is getting lower and lower. At the same time, the water vapor sliding edge 2-6-3 of the fixing plate 2-6 can finally form a sliding area for flowing. The installation position of the filter cotton 2-4 is at a certain distance from the door panel intake hole 3-1 of the door panel 3, which better enables water vapor and the like to be filtered by the filter cotton and fall through the water vapor sliding edge 2-6-3 at the lower end. Finally, during normal maintenance, opening the door panel 3 can view the pollution status of the filter cotton 2-4 from the inside. If the status is poor, replace the filter cotton according to the disassembly and assembly schematic diagram. And when replacing the filter cotton, the internal chambers of the intake device 2 can be cleaned with water.

[0094] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective and fast-running air ventilation device, comprising a box body (1), an air intake device (2), and an exhaust device (4), characterized in that the air intake device (2) is arranged on the side of the box body (1), and the exhaust device (4) is arranged on the top of the box body (1). When the moving speed of the box body (1) reaches a predetermined value, under the action of the running wind, the air intake device (2) and the exhaust device (4) can be automatically opened to realize the ventilation inside the box body (1); the air intake device (2) includes an air intake hood (2-1), a partition board (2-2), a flame-retardant filter cotton (2-4), a linkage plate assembly (2-8), and a circular air bag (2-9). A linkage plate assembly (2-8) and a circular air bag (2-9) are respectively installed at the front and back inside the air intake hood (2-1). The partition board (2-2) is installed in the middle of the air intake hood (2-1). The flame-retardant filter cotton (2-4) is arranged inside the partition board (2-2). When the moving speed of the box body (1) reaches a predetermined value, after the circular air bag (2-9) on the windward side is filled with gas, it can drive the linkage plate assembly (2-8) to open, so that the air flow can enter the air intake hood (2-1) and pass through the partition board (2-2) and the flame-retardant filter cotton (2-4) and enter the box body; the exhaust device (4) includes an exhaust hood (4-1), drive rods (4-4) arranged on the left and right sides of the exhaust hood (4-1), a turning bracket (4-8), and a long air bag (4-9). When the moving speed of the box body (1) reaches a predetermined value, after the long air bag (4-9) on the windward side is filled with gas, it can drive the turning bracket (4-8) to push the drive rod (4-4). The drive rod (4-4) forms a reverse lever prying principle with the top surface of the box body (1), so that the windward surface of the exhaust hood (4-1) drops and the leeward surface rises to form an exhaust port, and the air flow inside the box body (1) can be discharged from the exhaust port between the leeward surface of the exhaust hood (4-1) and the top surface of the box body (1) to the outside of the box body (1).

2. The protective fast-running air ventilation device according to claim 1, wherein, It further includes a door panel (3), an exhaust pipe (5), and a movable cover plate (7). The door panel (3) is provided with a door panel air intake hole (3-1) and is arranged on the side of the box body (1). The air intake device (2) is arranged on the door panel (3). The movable cover plate (7) is arranged on the top of the box body (1). The exhaust pipe (5) is arranged on the movable cover plate (7). An air outlet hole (7-1) is opened at the position corresponding to the exhaust pipe (5) on the movable cover plate (7). The exhaust device (4) is arranged on the exhaust pipe (5). An exhaust pipe rubber strip (5-1) is arranged on the top surface of the exhaust pipe (5).

3. The protective fast-running air ventilation device according to claim 1, characterized in that, The intake device (2) further includes a grille plate (2-3), a flip pressure plate (2-5), a fixing plate (2-6), and a sealing strip plate (2-7). The fixing plate (2-6) and the sealing strip plate (2-7) are arranged on the outer side of the intake hood (2-1). The flip pressure plate (2-5) can press the flame-retardant filter cotton (2-4) onto the grille plate (2-3). The isolation plate (2-2) is respectively provided with isolation plate intake holes (2-2-1) on both sides. The linkage plate assembly (2-8) includes a sealing plate (2-8-1), an intake rubber strip plate (2-8-2), an intake grille plate (2-8-3), a linkage rod (2-8-4), and a flip plate (2-8-5). The flip plate (2-8-5) is hinged to the intake grille plate (2-8-3). The intake rubber strip plate (2-8-2) is located on the back of the intake grille plate (2-8-3). The lower part of the sealing plate (2-8-1) is hinged to the intake grille plate (2-8-3). The bottom of the linkage rod (2-8-4) is hinged to the flip plate (2-8-5), and the top passes through the intake grille plate (2-8-3) and is connected to the upper part of the sealing plate (2-8-1). The circular air bag (2-9) is fixed to the flip plate (2-8-5), and the flip plate (2-8-5) is provided with a flip plate inflation hole (2-8-5-2).

4. The protective high-speed air change device according to claim 3, characterized in that, The exhaust device (4) further includes a nylon pulley (4-3), a limit stud (4-5), a mounting bracket (4-6), a small rotating stud (4-7), a large rotating stud (4-10), and an M4 fixing screw (4-11). A mounting bracket (4-6) is fixedly installed on each side of the front and rear ends of the exhaust hood (4-1). The flip bracket (4-8) is hinged to the two mounting brackets (4-6) at the corresponding end. The long air bag (4-9) is installed on the flip bracket (4-8). One end of the driving rod (4-4) is provided with a rotating hole (4-4-3), and the other end includes a sliding section (4-4-1). The small rotating stud (4-7) passes through the rotating hole (4-4-3) and is threadedly connected to both sides of the flip bracket (4-8) so that one end of the driving rod (4-4) is hinged to the flip bracket (4-8). The end of the sliding section (4-4-1) is an extrusion section (4-4-2). The upper surface of the sliding section (4-4-1) presses the surface of the inner groove (4-3-2) of the nylon pulley (4-3). The nylon pulley (4-3) is fixed to both sides of the exhaust hood (4-1) by the large rotating stud (4-10). The limit stud (4-5) is fixed to both sides of the exhaust hood (4-1). The middle part of the driving rod (4-4) is located in the gap between the limit stud (4-5) and the exhaust hood (4-1).

5. The protective fast-running air ventilation device according to claim 4, characterized in that, The exhaust device (4) further includes two upper and lower rotating shafts (4-2) and an exhaust device mounting bracket (6) fixed to both sides of the top of the exhaust hood (4-1) by M4 fixing screws (4-11). The bottom of the exhaust device mounting bracket (6) is fixed to the movable cover plate (7), and a movable waist-shaped hole (6-2) is provided in the upper part. The upper and lower rotating shafts (4-2) pass through the movable waist-shaped hole (6-2).

6. The protective fast-running air ventilation device according to claim 5, characterized in that, The intake device (2) includes two groups, which are respectively arranged on both side surfaces of the box body (1).

7. The protective fast-running air ventilation device according to claim 6, characterized in that, The preset value is 80 km / h.

8. The air exchange method of the protective fast-running wind air exchange device according to any one of claims 5-7, wherein the device is installed in a vehicle, and is characterized in that When the moving speed of the vehicle is lower than the preset value, both the intake device (2) and the exhaust device (4) are in a closed state. When the moving speed of the vehicle reaches the preset value, the fast-running wind increases. The round air bag (2-9) is impacted by air pressure, filled and squeezed, forming a large pressure and remaining without falling. Then, it drives the flip plate (2-8-5) to drive the linkage rod (2-8-4) to push the sealing plate (2-8-1) to open, so that the air flow can reach the other side of the partition plate (2-2) through the channel, and enter the middle inner cabin area through the partition plate air intake hole (2-2-1) of the partition plate (2-2), and sequentially pass through the filter cotton air intake hole (2-3-1) of the grille plate (2-3), the flame-retardant filter cotton (2-4), and the filter cotton air outlet hole (2-5-3) of the flip pressing plate (2-5), and finally reach the interior of the cabin of the under-vehicle equipment; At the same time when the moving speed of the vehicle reaches the preset value, the long air bag (4-9) is impacted by air pressure, filled and squeezed, forming a large pressure and remaining without falling. Then, it drives the flip bracket (4-8) to push the sliding section (4-4-1) of the driving rod (4-4) to squeeze the inner groove (4-3-2) surface of the nylon pulley (4-3), so that the squeezing section (4-4-2) contacts the surface of the movable cover plate (7), forming a lever reverse prying state, causing the windward end of the exhaust hood (4-1) to fall and the leeward surface to rise to form an exhaust port. At this time, the lower edge of the windward end of the exhaust hood (4-1) is closed with the surface of the movable cover plate (7), and the inner falling section of the exhaust hood (4-1) is attached to the edge of the exhaust pipe rubber strip (5-1) of the exhaust pipe (5), greatly reducing the probability of dust directly pouring in from the windward surface. At this time, the hot gas inside the cabin of the intake device (2) is discharged out of the vehicle through the exhaust port; When the moving speed of the vehicle is lower than the preset value again, the flip bracket (4-8) of the exhaust device (4) automatically falls back to its original position due to the factor of its own gravity with the inclined plane setting. Then, the inner side of the exhaust device (4) is attached to the exhaust pipe (5) to achieve closing; and the flip plate (2-8-5) of the intake device (2) automatically falls due to the factor of gravity when the running wind is small, and then the closing plate (2-8-1) is closed to form a sealed cabin.

Images