Special vehicle and method for automatic replenishment of pressure air for train braking system

Abstract

This invention discloses a special vehicle and method for automatically replenishing pressurized air in a train braking system, comprising a chassis, an equipment room, an air supply system, a braking device, and a coupler buffer device. The air supply system is located in the equipment room, which is mounted on the chassis. The air supply system is connected to the train braking system through the braking device. The air supply system can automatically start or stop the air compressor based on changes in the air pressure in the train's air pipes. Based on a railway freight car product technology platform, this invention innovatively integrates power generation and air supply equipment, achieving linkage between power generation and air supply, and implementing graded control of air compressor startup. During unloading operations on heavy-haul trains, it can effectively replace locomotive operations, meet the train's need for replenishing pressurized air, and improve transportation economy.

Description

Technical Field

[0001] This invention relates to the field of rail equipment technology, and in particular to a special vehicle and method for automatically replenishing pressurized air in a train braking system. Background Technology

[0002] Heavy-haul transportation is an internationally recognized direction for railway freight development. In countries rich in mineral resources, the supporting role of heavy-haul transportation in economic and social development is particularly evident. Open wagons account for a large proportion of heavy-haul transportation. They are usually equipped with rotating couplers, and unloading is carried out continuously without uncoupling using tippers to improve unloading speed and train turnaround efficiency. Due to the large number of trains and the long unloading time, some countries are limited by track and transportation conditions, maintenance standards, etc., resulting in large leakage in vehicle brake systems and air cylinders. To avoid the drop in air pressure in the brake mains causing unloading failures after braking, the locomotive needs to continuously supply air to the train to ensure that the vehicles are in a relaxed state during the unloading process. This leads to a long locomotive occupation time, affecting the overall transportation efficiency.

[0003] In summary, how to effectively provide a special vehicle to supplement the pressurized air of the train braking system, replacing the locomotive in providing stable and clean pressurized air to the train braking system, thereby improving transportation economy, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a special vehicle and method for automatically replenishing the pressurized air of a train braking system, addressing the aforementioned shortcomings. This solves the problem in the prior art where the locomotive continuously supplies air to the train to ensure that the vehicle remains in a relaxed state during unloading, resulting in long locomotive occupancy times and affecting overall transportation efficiency. This solution can automatically provide stable and clean pressurized air to the braking system, ensuring rapid and safe unloading of heavy-haul trains.

[0005] This invention is achieved through the following scheme:

[0006] A special vehicle that automatically replenishes the pressurized air of a train braking system includes a chassis, an equipment compartment, an air supply system, a braking device, and a coupler buffer device. The equipment compartment is located on the chassis, and the air supply system is located in the equipment compartment. The air supply system is connected to the train braking system through the braking device, and the air supply system can automatically start or stop the air compressor according to changes in the air pressure in the train's air pipe.

[0007] Based on the structure of the special vehicle for automatically replenishing pressurized air in the train braking system described above, the air supply system includes a diesel generator set, an air compressor, a dryer, a main air reservoir, and an electrical control cabinet. The air compressor and the dryer are powered by the diesel generator set. The air outlet pipe of the main air reservoir is connected to the main pipe of the braking device. A check valve is provided between the dryer and the main air reservoir. The main air reservoir is equipped with a high-pressure safety valve, and a pressure regulating valve is provided on the air outlet pipe of the main air reservoir.

[0008] Based on the structure of the special vehicle for automatically replenishing pressurized air in the train braking system described above, the dryer and the diesel generator set are respectively installed at both ends of the equipment room; the air compressors are respectively installed on both sides of the equipment room and next to the dryer; the main air cylinder is installed horizontally next to the air compressor; the electrical control cabinet is installed between the main air cylinder and the diesel generator set, with operating space provided.

[0009] Based on the structure of the special vehicle for automatically replenishing pressurized air in the train braking system described above, the equipment room includes end walls, a roof, and side walls; the two end walls and the two side walls are connected to form a cavity structure, which is arranged in the middle of the underframe and has an open top; the roof is connected to the upper end of the cavity structure to form an air supply equipment room.

[0010] Based on the structure of a special vehicle for automatically replenishing pressurized air in a train braking system, the end wall includes an upper end beam, a crossband, a lower end beam, an end post, an end plate, an end grid plate, and a column; the upper end beam, crossband, and lower end beam, together with the end post, form an assembly cavity and a heat dissipation cavity for accommodating the end plate, and the end plate is disposed in the assembly cavity; the end grid plate and the column are disposed in the ventilation cavity; the assembly cavity is located at the lower end of the end wall, and the heat dissipation cavity is located at the upper end of the end wall.

[0011] Based on the structure of the special vehicle for automatically replenishing pressurized air in the train braking system described above, the side wall includes a side frame, an upper side beam, a side column, a side grid plate, and a side door; the side frame, upper side beam, and side column are welded together to form a frame structure; the side grid plate is disposed between the side frame and the side column, and between the side columns; the side door includes a door frame, a door panel, and a crossbeam, and is equipped with a door lock and a handle.

[0012] Based on the structure of the special vehicle for automatically replenishing pressurized air in the train braking system described above, the roof includes a movable roof cover, a fixed roof plate, and a roof beam; the fixed roof plate is located at the center of the equipment compartment along its length, and the movable roof cover overlaps the two sides of the fixed roof plate on the top of the equipment compartment; the movable roof cover includes a frame, a crossbeam, and a cover plate, which are welded together to form a plate-column shape; the frame is provided with lifting lugs; the movable roof cover is arranged on the upper end beam and the upper side beam; the roof beam is connected to the upper side beam to form a frame, and the fixed roof plate is arranged above the two roof beams.

[0013] Based on the structure of the special vehicle with automatic replenishment of pressurized air for the train braking system described above, the braking device is located under the underframe and includes a main pipe assembly, a distribution valve assembly, a basic braking assembly, and a handbrake assembly. The main pipe assembly is arranged in an H-shape and includes a brake hose, a straight-end plug, a main pipe tee, a brake main pipe, a main pipe connecting bend, and a main pipe connecting pipe. The main pipe connecting bend extends above the underframe and is connected to the pressure regulating valve of the air source system, allowing purified high-pressure air to enter the brake main pipe. After the brake hose is connected to the straight-end plug, it is arranged at both ends of the underframe and located on both sides of the coupler buffer device 6.

[0014] This solution discloses a method for automatically replenishing pressurized air in a train braking system, which includes the following steps;

[0015] Step 1: Connect the coupler buffer device of the special vehicle to the train, and connect the brake hose in the braking device of the special vehicle to the train braking system.

[0016] Step 2: The air supply system automatically starts or stops the air compressor based on changes in the air pressure in the train pipe. The pressurized air generated by the compressor is dried and purified before entering the main air reservoir for storage.

[0017] Step 3: Based on the train's air supply needs, the pressurized air from the main air reservoir is used to supply air to the train pipe, and the pressure is controlled by the pressure regulating valve.

[0018] The starting of the air compressors is controlled in stages. When the pressure in the main air cylinder drops to the first switch pressure of the regulator, one air compressor is started; when the pressure in the main air cylinder drops to the second switch pressure of the regulator, the second air compressor is started, until the pressure in the main air cylinder reaches the set pressure and is shut off. During the recharging and release process after the train's service braking, only one air compressor needs to be started to meet the train's recharging needs, with the other serving as a backup. During recharging and release after emergency braking, both compressors are started to accelerate the recharging speed of the train and shorten the recharging and recharging time after emergency braking.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. Based on the railway freight car product technology platform, this invention innovatively integrates power generation and air supply equipment to achieve linkage between power generation and air supply, implements graded control of air compressor start-up, meets the train's demand for supplemental pressurized air, and can effectively replace locomotive operations during unloading operations of heavy-haul trains, thereby improving transportation economy.

[0021] 2. This invention features an innovative layout for the air source system equipment, forming a double-sided through corridor along the longitudinal direction of the vehicle, which facilitates daily maintenance and repair.

[0022] 3. This invention innovatively adopts a large-area grid-type sidewall and movable roof-type equipment room structure, which has the characteristics of good ventilation and heat dissipation and convenient equipment hoisting, and is especially suitable for use in areas with harsh climate conditions.

[0023] 4. This invention innovatively adopts an H-shaped dual-pipe braking device, which controls the air pressure entering the braking pipe through the air source system via a pressure regulating valve. It features convenient operation, safety, and reliability, and can be flexibly coupled with trains from different directions to meet the requirements of tippler unloading. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the special vehicle in this invention;

[0025] Figure 2 This is a schematic diagram of the end wall structure in this invention;

[0026] Figure 3 This is a schematic diagram of the sidewall structure in this invention;

[0027] Figure 4 This is a schematic diagram of the structure of the ceiling in this invention;

[0028] Figure 5 This is a schematic diagram of the wind source system in this invention;

[0029] Figure 6 This is a schematic diagram of the main component of the braking device in this invention;

[0030] Attached Figure Descriptions: 1. Underframe; 2. End Wall; 3. Roof; 4. Side Wall; 5. Bogie; 6. Coupler Buffer Device; 7. Braking Device; 8. Air Supply System; 21. Upper End Beam; 22. Cross Straps; 23. Lower End Beam; 24. End Column; 25. End Plate; 26. End Grid Plate; 27. Column; 31. Movable Top Cover; 32. Fixed Top Plate; 33. Roof Beam; 34. Lifting Lug; 41. Side Frame; 42. Upper Side Beam; 43. Side Column; 44. Side Grid Plate; 45. Side Door; 51. Brake Hose; 52. Straight End Plug; 53. Main T-Connector; 54. Brake Main Pipe; 55. Main Pipe Connecting Bend; 56. Main Pipe Connecting Pipe; 81. Diesel Generator Set; 82. Control Cabinet; 83. Main Air Reservoir; 84. Air Compressor; 85. Dryer. Detailed Implementation

[0031] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0032] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0035] Example 1

[0036] like Figures 1-6 As shown, the present invention provides a technical solution:

[0037] A special vehicle that automatically replenishes the pressurized air of the train braking system includes at least a chassis 1, an end wall 2, a roof 3, a side wall 4, a bogie 5, a coupler buffer device 6, a braking device 7, and an air supply system 8. The air supply system 8 is connected to the train pipe through the braking device 7, and the air supply system 8 can automatically start or stop the air compressor according to the change in air pressure in the train pipe.

[0038] Based on the above structure, the air supply system 8 is installed on the base frame 1. The end wall 2, roof 3, and side wall 4 provide housing space for the air supply system 8 and protect it from damage caused by rain, snow, dust, and other external objects. By dynamically controlling the number of air compressors according to changes in the train's air pressure, the braking system can be efficiently supplied with air while minimizing energy consumption.

[0039] In this design, end wall 2, ceiling 3, and side wall 4 form an equipment room.

[0040] As an example, the air supply system 8 may include a diesel generator set 81, a control cabinet 82, an air compressor 84, a dryer 85, and a main air reservoir 83. The air compressor is connected to the dryer 85, and the dryer 85 is connected to the main air reservoir 83. The power switches for each device are integrated in the control cabinet 82.

[0041] Based on the above structure, the diesel generator set 81 supplies power to the air compressor 84 and the dryer 85 respectively. The air compressor 84 generates high-pressure air, and the dryer 85 dries the generated high-pressure air. The main air cylinder 83 is used to store high-pressure air. The entire air source system 8 can provide clean and stable high-pressure air to supplement the compressed air of the train braking system.

[0042] As an example, a check valve is provided between the dryer 85 and the main air cylinder 83, and a high-pressure safety valve is installed on the main air cylinder 83; a pressure regulating valve is provided on the air outlet pipe of the main air cylinder 83.

[0043] Based on the above structure, a check valve can be installed to prevent high-pressure air backflow; a high-pressure safety valve can be installed to limit the pressure of the air in the main air cylinder to a safe pressure range; and a pressure regulating valve can be installed to control the pressure range of the high-pressure air entering the braking device.

[0044] As an example, the two end walls 2 and the two side walls 4 are connected to form a cavity structure, which is located in the middle of the base frame and has an open top. The ceiling 3 is connected to the upper ends of the end walls 2 and the side walls 4 to form an air supply equipment room, and the air source system 8 is arranged in the air supply equipment room.

[0045] The end wall 2 includes an upper end beam 21, a cross band 22, a lower end beam 23, an end column 24, an end plate 25, an end grid plate 26, and a column 27. The upper end beam 21, the cross band 22, the lower end beam 23, the end column 24, and the column 27 are rectangular tubes. The upper end beam 21, the cross band 22, and the lower end beam 23, together with the end column 24, form an assembly cavity and a heat dissipation cavity for accommodating the end plate 25. The end plate 25 is disposed in the assembly cavity. The end grid plate 26 and the column 27 are disposed in the heat dissipation cavity.

[0046] The end grid plate 26 has a Z-shaped structure, and the adjacent side grid plates 44 are staggered vertically to form a maze, arranged between the columns 27. The assembly cavity is located at the lower end of the end wall 2, and the heat dissipation cavity is located at the upper end of the end wall 2.

[0047] The side wall 4 includes a side frame 41, an upper side beam 42, a side column 43, a side grid plate 44, and a side door 45; the side frame 41, the upper side beam 42, and the side column 43 are rectangular tubes;

[0048] The side frame 41, the upper side beam 42, and the side column 43 are welded together to form a frame structure; the side grid plate 44 is set between the side frame 41 and the side column 43, and between the side columns 43; the side grid plate 44 is Z-shaped, and the adjacent side grid plates 44 are staggered vertically to form a maze shape; the side door 45 includes a door frame, a door panel and a crossbeam, and is equipped with a door lock and a handle.

[0049] The base is equipped with a bogie, which is located under the vehicle. The coupler buffer device is located at the front and rear ends of the base.

[0050] Based on the above structure, by setting the end wall 2 and side wall 4 as an air-entry structure, it is convenient for the internal air source system 8 to work, while also having good heat dissipation performance. The side grid plate 44 and the end grid plate 26 are both set as Z-shaped and staggered to prevent rainwater, sand and dust from entering, ensuring a good working environment for the equipment.

[0051] As an example, the canopy 3 may include a movable roof cover 31, a fixed roof plate 32, and a roof beam 33; the fixed roof plate 32 is located at the center position in the length direction above the air supply equipment room, and the movable roof cover 31 is fixed to both sides of the fixed roof plate 32 above the air supply equipment room by bolts.

[0052] The movable roof 31 includes a frame, a crossbeam, and a cover plate. The frame, crossbeam, and cover plate are welded together to form a plate-column shape. The frame is provided with lifting lugs 34. The movable roof fixing seat is arranged on the upper beam 21 and the upper side beam 42. The roof beam 33 is connected to the upper side beam 42 to form a frame. The fixed roof plate 32 is arranged above the two roof beams 33.

[0053] Based on the above structure, by setting the canopy 3 as a structure that is movable at both ends and fixed in the middle, it is convenient to install and hoist the various equipment of the air source system 8 in the air supply equipment room. It is also convenient for later equipment maintenance. The movable canopy 31 on one or both sides can be opened as needed to reduce the difficulty of hoisting and reduce the workload.

[0054] As an example, the braking device 5 is located under the base frame 1 and consists of a main pipe assembly, a distribution valve assembly, a basic braking assembly, and a handbrake assembly. The main pipe assembly is arranged in an H-shape and includes a brake hose 51, a straight-end plug 52, a main pipe tee 53, a brake main pipe 54, a main pipe connecting bend 55, and a main pipe connecting pipe 56. The main pipe connecting bend 55 extends above the base frame and connects to the pressure regulating valve of the air supply system 8, allowing purified high-pressure air to enter the brake main pipe 54. The brake hose 51, after being connected to the straight-end plug 52, is located at both ends of the base frame 1 and on both sides of the coupler buffer device 6, allowing for flexible coupling with trains from different directions, adapting to the unloading and tipping requirements of the tipper, and featuring convenient operation and reliable safety.

[0055] Example 2

[0056] Based on the above embodiment 1, this embodiment provides a method for automatically replenishing pressurized air in a train braking system, which specifically includes the following steps;

[0057] Step 1: Connect the coupler buffer device of the special vehicle to the train, and connect the brake hose in the braking device of the special vehicle to the train braking system.

[0058] Step 2: The air supply system automatically starts or stops the air compressor based on changes in the air pressure in the train pipe. The pressurized air generated by the compressor is dried and purified before entering the main air reservoir for storage.

[0059] Step 3: Based on the train's air supply needs, the pressurized air from the main air reservoir is used to supply air to the train pipe, and the pressure is controlled by the pressure regulating valve.

[0060] In step two, specifically, the starting of the air compressor is controlled in stages. When the pressure in the main air cylinder drops to the first switch pressure of the pressure regulator, one air compressor is started; when the pressure in the main air cylinder drops to the second switch pressure of the pressure regulator, a second air compressor is started, until the pressure in the main air cylinder reaches the set pressure and is simultaneously shut off. Furthermore, during the recharging and release process after the train's service braking, starting only one air compressor is sufficient to meet the train's recharging needs, with the other serving as a backup. During recharging and release after emergency braking, both compressors are started to accelerate the recharging speed of the train and shorten the recharging and recharging time after emergency braking.

[0061] This solution enables efficient, rapid, and automated replenishment of air to the train braking system.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A special vehicle that automatically replenishes pressurized air in the train braking system, characterized in that: It includes a base frame, equipment room, air supply system, braking device, and coupler buffer device; the equipment room is set on the base frame, the air supply system is set in the equipment room, the air supply system is connected to the train braking system through the braking device, and the air supply system can automatically start or stop the air compressor according to the change of air pressure in the train pipe. The equipment room includes end walls, a ceiling, and side walls; the two end walls and the two side walls are connected to form a cavity structure, which is located in the middle of the base frame and has an open top; the ceiling is connected to the upper end of the cavity structure to form an air supply equipment room; The end wall includes an upper end beam, a cross band, a lower end beam, an end column, an end plate, an end grid plate, and a vertical column; the upper end beam, the cross band, and the lower end beam, together with the end column, form an assembly cavity and a heat dissipation cavity for accommodating the end plate, and the end plate is disposed in the assembly cavity; the end grid plate and the vertical column are disposed in the heat dissipation cavity; the assembly cavity is located at the lower end of the end wall, and the heat dissipation cavity is located at the upper end of the end wall; The side wall includes a side frame, an upper side beam, side columns, a side grid panel, and a side door; the side frame, upper side beam, and side columns are welded together to form a frame structure; the side grid panel is disposed between the side frame and the side columns, and between the side columns; the side door includes a door frame, a door panel, and a crossbeam, and is equipped with a door lock and a handle; The canopy includes a movable roof cover, a fixed roof plate, and a roof beam; the fixed roof plate is located at the center of the equipment room along its length, and the movable roof cover overlaps the two sides of the fixed roof plate on the top of the equipment room; the movable roof cover includes a frame, a crossbeam, and a cover plate, which are welded together to form a plate-column shape; the frame is provided with lifting lugs; the movable roof cover is arranged on the upper end beam and the upper side beam; the roof beam is connected to the upper side beam to form a frame, and the fixed roof plate is arranged above the two roof beams; The braking device is located under the underframe and includes a main pipe assembly, a distribution valve assembly, a basic braking assembly, and a handbrake assembly. The main pipe assembly is arranged in an H-shape and includes a brake hose, a straight-end plug, a main pipe tee, a brake main pipe, a main pipe connecting bend, and a main pipe connecting pipe. The main pipe connecting bend extends above the underframe and connects to the pressure regulating valve of the air source system, allowing purified high-pressure air to enter the brake main pipe. The brake hose is connected to the straight-end plug and is arranged at both ends of the underframe, located on both sides of the coupler buffer device.

2. A special vehicle for automatically replenishing pressurized air in the train braking system as described in claim 1, characterized in that: The air supply system includes a diesel generator set, an air compressor, a dryer, a main air reservoir, and an electrical control cabinet. The air compressor and the dryer are powered by the diesel generator set. The air outlet pipe of the main air reservoir is connected to the main pipe of the braking device. A check valve is provided between the dryer and the main air reservoir. The main air reservoir is equipped with a high-pressure safety valve. A pressure regulating valve is provided on the air outlet pipe of the main air reservoir.

3. A special vehicle for automatically replenishing pressurized air in the train braking system as described in claim 2, characterized in that: The dryer and the diesel generator set are respectively installed at both ends of the equipment room; the air compressors are respectively installed on both sides of the equipment room and next to the dryer; the main air cylinder is installed horizontally next to the air compressor; the electrical control cabinet is installed between the main air cylinder and the diesel generator set, with operating space provided.

4. A method for automatically replenishing pressurized air in the train braking system of a special vehicle based on any one of claims 1-3, characterized in that: It includes the following steps ； Step 1: Connect the coupler buffer device of the special vehicle to the train, and connect the brake hose in the braking device of the special vehicle to the train braking system. Step 2: The air supply system automatically starts or stops the air compressor based on changes in the air pressure in the train pipe. The pressurized air generated by the compressor is dried and purified before entering the main air reservoir for storage. Step 3: Based on the train's air supply needs, the pressurized air from the main air reservoir is used to supply air to the train pipe, and the pressure is controlled by the pressure regulating valve.

5. The method as described in claim 4, characterized in that: The starting of the air compressors is controlled in stages. When the pressure in the main air cylinder drops to the first switch pressure of the regulator, one air compressor is started; when the pressure in the main air cylinder drops to the second switch pressure of the regulator, the second air compressor is started, until the pressure in the main air cylinder reaches the set pressure and is shut off. During the recharging and release process after the train's service braking, only one air compressor needs to be started to meet the train's recharging needs, with the other serving as a backup. During recharging and release after emergency braking, both compressors are started to accelerate the recharging speed of the train and shorten the recharging and recharging time after emergency braking.

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