Bottom blowing and dust collecting system of railway vehicle

Abstract

The invention discloses a railway vehicle bottom blowing and dust collecting system which comprises a vehicle bottom dust collecting device and vehicle side blowing and dust collecting devices located on the two sides of the vehicle bottom dust collecting device, each vehicle side blowing and dust collecting device comprises a vehicle side air compressor assembly, a vehicle side dust collecting box assembly and a dry ice cleaning assembly, and each vehicle side dust collecting box assembly is provided with a blowing robot; the dry ice cleaning assembly comprises an ice mixing roller and a dry ice hopper, a plurality of pits are formed in the outer circumferential face of the ice mixing roller, a high-pressure air inlet and a high-pressure air outlet are formed in the two opposite side walls of the dry ice hopper respectively, the high-pressure air inlet is connected with a vehicle side air storage tank of the vehicle side air compressor assembly, and the high-pressure air outlet is connected with a spray gun on the blowing robot through a pipeline. Therefore, the dry ice cleaning device can be started to spray solid dry ice particles to the surface of the railway vehicle in places with oil stains and viscous impurities which are difficult to clean, so that dirt is quickly cooled and automatically caved and separated, the blowing and cleaning effect is improved, secondary pollution is avoided, corrosion is avoided, and the equipment safety is high.

Description

Technical Field

[0001] This application relates to the field of rail vehicle maintenance equipment technology, specifically to a rail vehicle undercarriage dust collection and cleaning system. Background Art

[0002] During long-term operation, rail transit trains are prone to absorbing or adhering to dust on the track bed. The accumulated dirt over time can affect the operation of the undercarriage equipment and thus affect the safety of the train.

[0003] To address the problems of high labor intensity, low efficiency, and severe environmental pollution associated with manual sweeping operations, Chinese utility model patent CN221068017U discloses an intelligent sweeping and dust removal system for urban rail trains. This system includes an undercarriage sweeping robot and two side-car sweeping and dust removal robots. The undercarriage sweeping robot is installed inside the train track bridge with its sweeping end facing the bottom of the train. The two side-car sweeping and dust removal robots are positioned opposite each other on either side of the track bridge, with the air inlet of each robot facing the undercarriage sweeping robot. The exhaust end of each side-car sweeping and dust removal robot is connected to the external atmosphere. Both the undercarriage sweeping robot and each side-car sweeping and dust removal robot are powered via a sliding contact line.

[0004] However, this solution uses high-pressure air to blow away dust, but the cleaning power of high-pressure air blowing is relatively low and cannot effectively remove oil stains and sticky impurities with strong adhesion, especially in the complex structural areas at the bottom of the vehicle, where the cleaning effect is even more limited. Summary of the Invention

[0005] In view of this, the present invention provides a dust collection system for blowing and cleaning the undercarriage of a rail vehicle to solve the problem that the existing technology cannot effectively remove oil stains and sticky impurities with strong adhesion, resulting in limited cleaning effect.

[0006] The present invention provides a rail vehicle undercarriage dust collection system, including an undercarriage dust collection device and a side-carriage dust collection device located on both sides of the undercarriage dust collection device. The side-carriage dust collection device includes a side-carriage chassis, and the side-carriage chassis is equipped with;

[0007] The vehicle-side air compressor assembly includes a vehicle-side air compressor and a vehicle-side air tank, wherein the high-pressure air generated by the vehicle-side air compressor is stored in the vehicle-side air tank.

[0008] The vehicle-side dust collection box assembly includes a vehicle-side dust collection box and a blowing robot. The blowing robot is equipped with a spray gun, and the vehicle-side dust collection box generates negative pressure through a vehicle-side centrifugal fan.

[0009] A dry ice cleaning assembly includes a mixing roller and a dry ice hopper. The mixing roller is rotatably mounted inside its housing. High-pressure air inlets and outlets are respectively opened on two opposite side walls of the housing along the radial direction of the mixing roller. The high-pressure air inlets are connected to a vehicle-side air tank via an input pipe, and the high-pressure air outlets are connected to a spray gun via an output pipe. The housing of the mixing roller is fixed to the chassis of the vehicle-side trolley, with an open upper end. The lower outlet of the dry ice hopper is positioned directly opposite the open end of the housing of the mixing roller.

[0010] The above-mentioned undercarriage dust collection system for rail vehicles integrates a dry ice cleaning device into the side dust collection device. When encountering stubborn oil stains and sticky impurities, the dry ice cleaning device can be activated to spray solid dry ice particles onto the surface of the rail vehicle, causing the dirt to cool rapidly. In particular, oil stains change from sticky to brittle under the sudden drop in temperature, automatically breaking off and improving the cleaning effect. Furthermore, there is no secondary pollution, no corrosion to the equipment, and the equipment is highly safe.

[0011] In the above technical solution, preferably, the vehicle-side dust collection box is equipped with a vehicle-side pressure equalization box, the outlet of the vehicle-side centrifugal fan is connected to the inner cavity of the vehicle-side pressure equalization box, and the side of the vehicle-side pressure equalization box facing the rail vehicle is provided with a U-shaped air curtain, with the U-shaped opening of the air curtain facing the bottom of the vehicle. This solution utilizes the negative pressure generated by the centrifugal fan to simultaneously generate positive pressure in the vehicle-side pressure equalization box, which then sprays air from the U-shaped air curtain, forming a U-shaped air curtain on the side of the rail vehicle. This prevents the swept-down dust from escaping from the side, thus keeping the working environment clean.

[0012] In the above technical solution, preferably, a vehicle-side backflushing nozzle is provided above each vehicle-side air filter cartridge, and the vehicle-side backflushing nozzle is connected to the vehicle-side air storage tank for backflushing and cleaning the vehicle-side air filter cartridge.

[0013] In the above technical solution, the undercarriage dust collection device includes an undercarriage chassis, an undercarriage air compressor device is provided in the middle of the undercarriage chassis, and undercarriage dust collection box assemblies are respectively provided on both sides of the undercarriage air compressor device along the length direction of the undercarriage track. The undercarriage dust collection box assembly includes:

[0014] The dust collection box under the vehicle is internally divided into an isolated equipment chamber, a dust removal chamber, and an air curtain chamber. The top surface of the dust collection box is provided with a dust suction port and a strip-shaped air curtain at intervals. The strip-shaped air curtain is located outside the dust suction port. The dust suction port is connected to the dust removal chamber, and the strip-shaped air curtain is connected to the air curtain chamber.

[0015] An air filter cartridge is installed under the vehicle and inside the dust removal chamber.

[0016] A centrifugal fan is installed under the vehicle and inside the equipment cavity. Its air inlet is connected to the dust removal cavity and its air outlet is connected to the air curtain cavity.

[0017] The undercarriage air compressor device includes an undercarriage air compressor assembly and an undercarriage air tank. The undercarriage air compressor assembly generates high-pressure air, which is stored in the undercarriage air tank.

[0018] This solution utilizes a dust collection device under the vehicle to collect dust falling onto the vehicle's underside, thus preventing pollution of the working environment.

[0019] In the above technical solution, preferably, the air curtain cavity is located at the upper part of the dust collection box body under the vehicle, and the equipment cavity and the dust removal cavity are arranged side by side at the lower part of the dust collection box body under the vehicle. A strip-shaped air curtain opening is formed on the top wall of the air curtain cavity, located outside the dust suction port under the vehicle. The air curtain cavity is connected to the outlet of the centrifugal fan under the vehicle via a pipe. This adopts the same principle as the equalizing box on the side of the vehicle, forming an air curtain under the vehicle, which can prevent dust falling towards the bottom of the vehicle from escaping to both sides.

[0020] In the above technical solution, preferably, each of the under-vehicle air filter cartridges is provided with an under-vehicle back-blowing nozzle above it, and the under-vehicle back-blowing nozzle is connected to the under-vehicle air tank for back-blowing cleaning of the under-vehicle air filter cartridge.

[0021] In the above technical solution, preferably, the side of the dust collection box facing the rail vehicle is provided with a groove, the base of the blowing robot is fixed in the groove, and the dust collection box body on both sides of the groove is provided with a side suction port.

[0022] In the above technical solution, preferably, a pull-out side dust collection drawer is provided below the side air filter, and a pull-out bottom dust collection drawer is provided below the bottom air filter.

[0023] In the above technical solution, preferably, a guide plate is also provided in the dust removal chamber, the guide plate is located below the dust suction port under the vehicle, and the lower end of the guide plate is inclined toward the equipment chamber.

[0024] In the above technical solution, preferably, it also includes a track bridge set on the foundation, with side rails respectively provided on the platforms of the foundation on both sides of the track bridge, and a vehicle bottom rail provided in the trench below the track bridge. The vehicle side blowing and dust collection device is provided on the side rail, and the vehicle bottom dust collection device is provided on the vehicle bottom rail. The vehicle bottom dust collection device is located between the two vehicle side blowing and dust collection devices.

[0025] As can be seen from the above technical solution, the dust collection system for cleaning the undercarriage of rail vehicles provided by this invention solves the problem that existing technologies cannot effectively remove strongly adhering oil stains and sticky impurities, resulting in limited cleaning effects. Compared with existing technologies, this invention has the following beneficial effects:

[0026] The vehicle-side blowing and dust collection device is equipped with a dry ice cleaning device. When encountering oil stains and sticky impurities that are difficult to clean, the dry ice cleaning device can be activated to spray solid dry ice particles onto the surface of the rail vehicle, which rapidly cools the dirt. In particular, oil stains change from sticky to brittle under the sudden drop in temperature and automatically break off, improving the blowing and cleaning effect. Moreover, there is no secondary pollution, no corrosion to the equipment, and the equipment is highly safe. Attached Figure Description

[0027] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced and explained below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the dust collection and blowing system under the rail vehicle provided by the present invention;

[0029] Figure 2 This is a schematic diagram of the vehicle-side blowing dust collection device in this invention;

[0030] Figure 3 for Figure 2 A schematic diagram of the internal structure of the vehicle-side blowing dust collection device is shown.

[0031] Figure 4 This is a schematic diagram of the vehicle-side dust collection box assembly in this invention;

[0032] Figure 5 for Figure 4 The diagram shows an exploded view of the dust collection box assembly on the vehicle side.

[0033] Figure 6 for Figure 5 A schematic diagram of the hidden back panel of the vehicle side dust collection device;

[0034] Figure 7 This is a schematic diagram of the internal structure of the vehicle-side dust collection box in this invention;

[0035] Figure 8 This is a schematic diagram of the dry ice cleaning assembly in this invention;

[0036] Figure 9 This is a schematic diagram of the assembly of the dry ice cleaning component in the invention;

[0037] Figure 10 This is a schematic diagram of the dust collection device under the vehicle in the invention;

[0038] Figure 11 This is a schematic diagram of the dust collection box assembly under the vehicle in the invention.

[0039] Figure 12 for Figure 11 A schematic diagram of the internal structure of the dust collection box assembly under the vehicle shown.

[0040] Figure 13 This is a schematic diagram of the dust collection box body on the vehicle side in this invention;

[0041] Figure 14 for Figure 13 The diagram shows a cross-sectional view of the dust collection box on the side of the vehicle.

[0042] Figure 15 for Figure 13 The diagram shows the internal structure of the dust collection box on the side of the vehicle.

[0043] Figure 16 This is a schematic diagram of the undercarriage air compressor device in this invention. DETAILED DESCRIPTION

[0044] 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 embodiments described below 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.

[0045] To provide a clearer explanation and description of the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are described below.

[0046] It should be noted that the directional terms such as "inner" and "outer", "front" and "back" and "left" and "right" in this article are based on the product's usage status. Obviously, the use of these directional terms does not limit the scope of protection of this solution.

[0047] like Figure 1 As shown, the present invention provides a rail vehicle undercarriage blowing and dust collection system including a rail bridge 200 installed on a foundation 100, side rails 300 respectively installed on the platforms of the foundation on both sides of the rail bridge 200, undercarriage rails 400 installed in the trench below the rail bridge 200, sidecar blowing and dust collection devices 500 installed on the side rails 300, and undercarriage dust collection devices 600 installed on the undercarriage rails 400, with the undercarriage dust collection devices 600 located between the two sidecar blowing and dust collection devices 500.

[0048] The track bridge 200 is used to park rail vehicles. The side-blowing dust collection device 500 is equipped with a blowing robot and a side-blowing dust collection box, which is used to blow away dust from the sides and bottom of the rail vehicles and collect the dirt that falls on the sides. The bottom-blowing dust collection device 600 is used to collect the dirt that falls into the bottom groove. Both the side-blowing dust collection device 500 and the bottom-blowing dust collection device 600 are powered by corresponding safety sliding contact lines and can move along the side track 300 and the bottom track 400 to blow away dust from the entire rail vehicle.

[0049] like Figure 2 As shown, the vehicle-side blowing and dust collection device 500 includes a vehicle-side trolley chassis 510, which is mounted on a side track 300 and can move along the side track 300 to perform blowing and dust collection. The vehicle-side trolley chassis 510 is equipped with a vehicle-side air compressor assembly 520, a vehicle-side dust collection box assembly 530, a blowing robot 540, a dry ice cleaning assembly 550, and a vehicle-side pressure equalization box 560.

[0050] The vehicle-side air compressor assembly 520 generates high-pressure air for use by the cleaning robot 540. Additionally, the high-pressure air generated by the vehicle-side air compressor assembly 520 can also be supplied to the vehicle-side dust collection box assembly 530 for backflushing cleaning. Specifically, the vehicle-side air compressor assembly 520 includes a vehicle-side air compressor and a vehicle-side air tank; the high-pressure air generated by the vehicle-side air compressor is stored in the vehicle-side air tank.

[0051] The side dust collection box assembly 530 is used to collect the dirt and dust blown down by the sweeping robot 540, such as... Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the vehicle-side dust collection box assembly 530 includes a vehicle-side dust collection box 531 and a vehicle-side centrifugal fan 532. The air inlet of the vehicle-side centrifugal fan 532 is connected to the inner cavity of the vehicle-side dust collection box 531 to generate negative pressure in the inner cavity of the vehicle-side dust collection box 531. Specifically, the side wall of the vehicle-side dust collection box 531 is provided with an opening for connecting to the air inlet of the vehicle-side centrifugal fan 532.

[0052] The vehicle side dust collection box 531 is equipped with a vehicle side air filter cartridge 533, and multiple vehicle side air filter cartridges 533 can be installed.

[0053] A groove 534 is provided on the outer wall of the dust collection box 531 facing the rail vehicle. The base of the blowing robot 540 is fixed in the groove 534 on the dust collection box assembly 530. The blowing robot 540 can adopt a five-degree-of-freedom robot structure. Its robotic arm is equipped with a spray gun 541, which can be adjusted in various directions to blow clean all corners of the underside of the rail vehicle.

[0054] On the side dust collection boxes on both sides of the groove 534, there are side dust suction ports 535 facing the rail vehicle. The operation of the side centrifugal fan 532 creates negative pressure in the inner cavity of the side dust collection box 531. The dust blown down from the rail vehicle is sucked into the side dust collection box 531 through the side dust suction port 535 and filtered through the side air filter cartridge 533. The dust adheres to the filter element of the side air filter cartridge 533.

[0055] Each side air filter cartridge 533 is equipped with a side back-blowing nozzle above it. The side back-blowing nozzle is connected to the side air tank and is used to back-blow and clean the side air filter cartridge 533 with high-pressure gas. A pull-out side dust collection drawer 536 is provided below the side air filter cartridge 533. The dust blown down falls into the side dust collection drawer 536. When the dust in the side dust collection drawer 536 accumulates to a certain amount, the side dust collection drawer 536 can be pulled out and emptied.

[0056] The vehicle-side equalizing pressure box 560 is fixedly installed on the top surface of the vehicle-side dust collection box 531. The vehicle-side equalizing pressure box 560 is connected to the air outlet of the vehicle-side centrifugal fan 532. The vehicle-side equalizing pressure box 560 has a U-shaped air curtain opening 561 on the side facing the rail vehicle. The U-shaped opening of the U-shaped air curtain opening 561 is set towards the bottom of the vehicle to form an air curtain surrounding the top and left and right sides. When the vehicle-side centrifugal fan 532 draws air from the vehicle-side dust collection box 531, the exhaust air enters the vehicle-side equalizing pressure box 560 and is blown out from the U-shaped air curtain opening 561 to form a U-shaped air curtain, which blocks the blown-down dirt and dust inside the air curtain to avoid causing pollution to the working environment.

[0057] like Figure 6 As shown, each pressure equalization outlet 564 is slidably equipped with an adjustment plate 565, which can be used to adjust the size of the pressure equalization outlet 564, thereby achieving pressure equalization output.

[0058] The back panels of the vehicle-side dust collection box 531 and the vehicle-side pressure equalization box 560 are equipped with detachable door panels, which are used to pull out the vehicle-side dust collection drawer 536, adjust the adjustment plate 565, and replace and repair the filter cartridge.

[0059] To ensure uniform airflow across the U-shaped air curtain and improve its blocking effect, such as Figure 7 As shown, in this application, the inner cavity of the vehicle-side equalizing pressure box 560 is divided into a vehicle-side equalizing pressure chamber 562 and a vehicle-side air curtain chamber 563. The vehicle-side equalizing pressure chamber 562 is provided with multiple equalizing air outlets 564, which are connected to the vehicle-side air curtain chamber 563. The air outlet of the vehicle-side centrifugal fan 532 is connected to the vehicle-side equalizing pressure chamber 562. The U-shaped air curtain opening 561 is provided on the side wall of the vehicle-side air curtain chamber 563 facing the rail vehicle.

[0060] Existing rail transit train purging systems primarily use high-pressure air as the purging medium, employing high-pressure air jets to remove dust and dirt from equipment surfaces. However, this method has the following drawbacks:

[0061] (1) Limited cleaning effect: High-pressure air blowing has a low cleaning power and cannot effectively remove oil stains and sticky impurities with strong adhesion, especially in the complex structural areas at the bottom of the vehicle, where the cleaning effect is more limited.

[0062] (2) Redispersal of dust and impurities: High-pressure air purging can blow dust and dirt from one area to another, causing secondary pollution. In addition, fine particles in the air may re-adhere to the equipment surface, affecting the cleaning effect.

[0063] (3) Environmental pollution and health hazards: Due to the large amount of dust generated, the purging process may affect the surrounding environment and the health of the staff, especially in the closed purging chamber where the dust concentration is high and there are safety hazards.

[0064] To further improve the cleaning effect of the train undercarriage, this application adds a dry ice cleaning component 550, which proposes to use dry ice as the cleaning medium. The dry ice is sprayed onto the surface of the parts using a cleaning robot and high-pressure air. Due to the huge difference in the expansion coefficients of the parts and the dust, the dirt attached to the surface of the parts will fall off, thereby improving the cleaning effect.

[0065] like Figure 2 、 Figure 8 、 Figure 9 As shown, the dry ice cleaning assembly includes a dry ice hopper 551 and a mixing roller 552. The housing of the mixing roller 552 is fixed on the chassis 510 of the trolley on the side of the vehicle, with an open upper end. The lower outlet of the dry ice hopper 551 is positioned directly opposite the open end of the housing of the mixing roller 552. The mixing roller 552 is driven to rotate inside the housing by a drive motor 553.

[0066] The ice mixing roller 552 is cylindrical, and its outer circumference surface is provided with multiple pits 5521.

[0067] Along the radial direction of the mixing roller 552, high-pressure air inlets and outlets are respectively opened on two opposite side walls of the housing of the mixing roller 552. The high-pressure air inlets are connected to the vehicle-side air storage tank through an input pipe, and the high-pressure air outlets are connected to the spray gun 541 through an output pipe. During the purging operation, dry ice in the dry ice hopper 551 falls into the recess 5521 on the mixing roller 552, and is carried by high-pressure air to the spray gun 541 as the mixing roller 552 rotates. Solid dry ice particles are sprayed onto the surface of the rail vehicle through the spray gun 541, causing the dirt, especially oil, to cool rapidly, changing from sticky to brittle under the sudden drop in temperature. Due to the difference in thermal expansion coefficients, the dirt will automatically break off under the collision action of the airflow and the dry ice particles.

[0068] This approach has the following advantages:

[0069] 1) Excellent cleaning effect: Dry ice blowing can penetrate deep into complex equipment structures to remove stubborn oil stains and deposits, providing a more efficient cleaning effect than high-pressure air and high-pressure water cleaning.

[0070] 2) No secondary pollution: Dry ice sublimates directly during the purging process, leaving no residue and generating no secondary pollutants such as moisture or dust, ensuring the cleanliness of the equipment surface and the environment.

[0071] 3) High equipment safety: Dry ice blowing does not produce moisture, thus eliminating the risk of short circuits in electrical equipment and will not cause wear or corrosion to the equipment surface, thereby improving the service life and operational reliability of the equipment.

[0072] 4) Reduced manual operation: Dry ice blowing can achieve automated operation, reducing reliance on manual cleaning, improving work efficiency, and reducing the risks and costs of manual operation.

[0073] Some of the dust blown down by the side-blowing dust collection device 500 will fall to the bottom of the vehicle, where it will be collected by the under-vehicle dust collection device 600.

[0074] like Figure 10 As shown, the system includes a chassis 610 for the undercarriage, which is mounted on the undercarriage track of the rail vehicle undercarriage cleaning system and can move along the track to collect dust falling onto the undercarriage. An undercarriage air compressor device 620 is located in the middle of the chassis 610, and undercarriage dust collection box assemblies 630 are located on both sides of the undercarriage air compressor device 620 along the length of the undercarriage track.

[0075] like Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15As shown, the undercarriage dust collection box assembly 630 includes an undercarriage dust collection box body 631. The interior of the undercarriage dust collection box body 631 is divided into an isolated equipment chamber 6301, a dust removal chamber 6302, and an air curtain chamber 6303. Figure 5 The dust collection box 6303 is located in the upper part of the undercarriage dust collection box 631, while the equipment chamber 6301 and the dust removal chamber 6302 are arranged side by side in the lower part of the undercarriage dust collection box 631. The top surface of the undercarriage dust collection box 631 is provided with undercarriage suction ports 634 and strip-shaped air curtain ports 635 at intervals. The strip-shaped air curtain ports 635 are located outside the undercarriage suction ports 634, i.e., on the side away from the undercarriage air compressor unit 620. The undercarriage suction ports 634 are connected to the dust removal chamber 6302, and the strip-shaped air curtain ports 635 are connected to the air curtain chamber 6303.

[0076] The dust removal chamber 6302 is equipped with an undercarriage air filter cartridge 633, and multiple undercarriage air filter cartridges 633 can be installed. Below the dust removal chamber 6302 is a pull-out undercarriage dust collection drawer 636, which is slidably mounted on the undercarriage dust collection box body 631.

[0077] A centrifugal fan 632 is installed inside the equipment cavity 6301. Its air inlet is connected to the dust removal cavity 6302, and its air outlet is connected to the air curtain cavity 6303. When the centrifugal fan 632 operates, it creates a negative pressure in the dust removal cavity 6302, drawing the dust falling onto the ground under the vehicle into the dust collection box 631. The dust is then filtered through the air filter cartridge 633 under the vehicle, where it adheres to the filter element.

[0078] See also Figure 10 As shown, the two undercarriage dust collection box assemblies 630 located on both sides of the undercarriage air compressor device 620 form two undercarriage air curtains in the front-to-back direction of the rail vehicle's undercarriage, creating two air walls to prevent dust falling onto the undercarriage from escaping from the front and rear and polluting the working environment. Simultaneously, two undercarriage dust suction ports 634 located within the air curtain area draw dust from this area into the dust removal chamber 6302 for filtration and collection, preventing dust falling onto the undercarriage from accumulating on the ground and polluting the ground environment.

[0079] like Figure 16 As shown, the under-vehicle air compressor device 620 includes an under-vehicle air compressor assembly 621 and an under-vehicle air tank 622. The under-vehicle air compressor assembly 621 generates high-pressure air, which is stored in the under-vehicle air tank 622. Each under-vehicle air filter cartridge 633 is equipped with an under-vehicle back-blowing nozzle 637 above it. The under-vehicle back-blowing nozzle 637 is connected to the under-vehicle air tank 622, and the high-pressure air stored in the under-vehicle air tank 622 can be used to back-blow and clean the under-vehicle air filter cartridge 633. The dust and dirt blown down fall into the under-vehicle dust collection drawer 636. When the dust and dirt in the under-vehicle dust collection drawer 636 accumulate to a certain amount, the under-vehicle dust collection drawer 636 can be pulled out and emptied.

[0080] Please see again Figure 14 , Figure 15 , Figure 16 The dust removal chamber 6302 is also equipped with a guide plate 638. The guide plate 638 is located below the dust suction port 634 under the vehicle, and its lower end is inclined towards the equipment chamber 6301. Thus, the dirt sucked in from the dust suction port 634 under the vehicle can be guided to the air filter cartridge 633 under the vehicle, thereby improving the filtration efficiency and preventing dirt from accumulating in the corners of the dust removal chamber 6302.

[0081] Based on the above description of specific embodiments, the rail vehicle undercarriage dust collection system provided by the present invention has the following advantages compared with the prior art:

[0082] First, solid dry ice particles are sprayed to rapidly cool the contaminants, causing them to become brittle due to the sudden temperature drop. Because of the difference in thermal expansion coefficients, the contaminants automatically break off from the workpiece surface under the collision of the airflow and the dry ice particles. This method offers a more efficient cleaning effect than high-pressure air and water cleaning, produces no secondary pollution, and ensures high equipment safety.

[0083] Secondly, the vehicle-side blowing dust collection device introduces the outlet airflow of the fan into the equalizing box to form a uniform airflow field, and then forms a continuous air curtain between the blowing trolley and the train body through the air curtain outlet. This air curtain can effectively seal off the dust and debris generated during the blowing process, preventing them from spreading in the working area, thus facilitating the centralized collection and treatment by the dust collection device.

[0084] Third, the dust collection box assembly under the car is located in the pit under the rail vehicle. The dust removal chamber is equipped with a centrifugal fan under the car, which can create negative pressure in the dust removal chamber to suck the dirt falling to the ground under the car into the dust collection box for filtration and collection, so as to prevent the dirt falling to the ground from accumulating on the ground and polluting the ground environment.

[0085] Fourth, the dust collection box under the car body is equipped with an air curtain cavity inside, which is connected to the air outlet of the centrifugal fan under the car body. The top surface of the dust collection box under the car body is equipped with a strip-shaped air curtain opening, which can form two air curtains under the car body in the front and rear directions, forming two air walls to prevent the dirt and dust falling to the car body from escaping from the front and rear and polluting the working environment.

[0086] Finally, it should be noted that the terms "comprising," "including," or any other variations thereof as used herein 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 limitation, an element defined by the phrase "comprising a…" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0087] This invention is not limited to the above-described preferred embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

Claims

1. A railway vehicle underbody blowing and dust collection system, comprising an underbody dust collection device and vehicle side blowing and dust collection devices located on both sides of the underbody dust collection device, characterized in that: The vehicle side blowing and dust collecting device comprises a vehicle side trolley chassis, and the vehicle side trolley chassis is provided with; The vehicle side air compressor assembly comprises a vehicle side air compressor and a vehicle side air storage tank, wherein the high pressure air generated by the vehicle side air compressor is stored in the vehicle side air storage tank; A vehicle side dust box assembly, comprising a vehicle side dust box and a purge robot, wherein the purge robot is provided with a spray gun, and the vehicle side dust box generates negative pressure through a vehicle side centrifugal fan; A dry ice cleaning assembly comprises an ice mixing roller and a dry ice hopper, wherein the ice mixing roller is rotatably arranged in a shell of the ice mixing roller, and a high-pressure air inlet and a high-pressure air outlet are respectively opened on two opposite side walls of the shell of the ice mixing roller along the radial direction of the ice mixing roller, wherein the high-pressure air inlet is connected to the vehicle-side air storage tank through an input pipe, and the high-pressure air outlet is connected to the spray gun through an output pipe; the shell of the ice mixing roller is fixed to the vehicle-side trolley chassis, and the upper end is openly arranged, and the lower end outlet of the dry ice hopper is arranged opposite to the open end of the shell of the ice mixing roller.

2. The railway vehicle underbody blowing and dust collection system according to claim 1, characterized in that: The vehicle side dust collecting box is provided with a vehicle side equalizing pressure box, the air outlet of the vehicle side centrifugal fan is connected with the inner cavity of the vehicle side equalizing pressure box, and the vehicle side equalizing pressure box is provided with a U-shaped air curtain opening on the side facing the rail vehicle, and the U-shaped opening of the U-shaped air curtain opening is arranged towards the bottom of the vehicle.

3. The railway vehicle underbody blowing and dust collection system according to claim 1, characterized in that: A vehicle side back-blowing nozzle is arranged above each vehicle side air filter cartridge, and the vehicle side back-blowing nozzle is connected to the vehicle side air storage tank for back-blowing and cleaning the vehicle side air filter cartridge.

4. The railway vehicle underbody blowing and dust collection system according to claim 1, characterized in that: The undercar dust collecting device comprises an undercar trolley chassis, an undercar air compressor device is provided in the middle of the undercar trolley chassis, and undercar dust collecting box assemblies are provided on both sides of the undercar air compressor device along the length direction of the undercar track, and the undercar dust collecting box assembly comprises: The undercar dust collection box body is divided into a mutually isolated equipment chamber, a dust removal chamber and an air curtain chamber. The top surface of the undercar dust collection box body is provided with an undercar dust suction port and a strip air curtain port at intervals. The strip air curtain port is located outside the undercar dust suction port. The undercar dust suction port is communicated with the dust removal chamber, and the strip air curtain port is communicated with the air curtain chamber. The underbody air filter cartridge is arranged in the dust removal chamber. A centrifugal fan under the vehicle, arranged in the equipment cavity, with its air inlet communicating with the dust removal cavity, and its air outlet communicating with the air curtain cavity; The undercarriage air compressor device comprises an undercarriage air compressor assembly and an undercarriage air storage tank. The undercarriage air compressor assembly generates high-pressure air when in operation and stores the high-pressure air in the undercarriage air storage tank.

5. The railway vehicle underbody blowing and dust collection system according to claim 4, characterized in that: The air curtain cavity is located at the upper part of the dust collecting box body under the vehicle, the equipment cavity and the dust removal cavity are arranged side by side at the lower part of the dust collecting box body under the vehicle, a strip air curtain opening is opened on the top wall of the air curtain cavity, and the strip air curtain opening is located on the outside of the dust suction port under the vehicle, and the air curtain cavity is connected to the air outlet of the centrifugal fan under the vehicle through a pipeline.

6. The railway vehicle underbody blowing and dust collection system according to claim 4, characterized in that: An underbody back-blowing nozzle is arranged above each underbody air filter cartridge, and the underbody back-blowing nozzle is connected to the underbody air storage tank for back-blowing and cleaning the underbody air filter cartridge.

7. The railway vehicle underbody blowing and dust collection system according to claim 1, characterized in that: The vehicle side dust collecting box is provided with a groove on the side facing the rail vehicle, the base of the cleaning robot is fixed in the groove, and vehicle side dust suction ports are respectively provided on the dust collecting box body on both sides of the groove.

8. The railway vehicle underbody blowing and dust collection system according to claim 4, characterized in that: A pull-out vehicle-side dust collection drawer is arranged below the vehicle-side air filter cartridge, and a pull-out vehicle-bottom dust collection drawer is arranged below the vehicle-bottom air filter cartridge.

9. The railway vehicle underbody blowing and dust collection system according to claim 4, characterized in that: A guide plate is also provided in the dust removal chamber. The guide plate is located below the dust suction port under the vehicle, and the lower end of the guide plate is inclined toward the equipment chamber.

10. The railway vehicle underbody blowing and dust collection system according to claim 1, characterized in that: It also includes a rail bridge arranged on the foundation, side rails are respectively arranged on the platforms of the foundation on both sides of the rail bridge, a vehicle bottom rail is arranged in the ditch below the rail bridge, the vehicle side blowing and dust collecting device is arranged on the side rails, the vehicle bottom dust collecting device is arranged on the vehicle bottom rails, and the vehicle bottom dust collecting device is located between the two vehicle side blowing and dust collecting devices.

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