Wireless reconnection braking system and method

Abstract

The invention relates to a wireless reconnection braking system and method, and belongs to the technical field of locomotive braking. The wireless reconnection braking system comprises a slave control vehicle braking control unit in communication connection with a master control vehicle braking control unit, and an electromagnetic valve electrically connected with the slave control vehicle braking control unit; a pipeline is connected with an exhaust port of the electromagnetic valve and is electrically connected with a main air intercepting valve of the slave control vehicle brake control unit; the slave control vehicle brake control unit controls the electromagnetic valve to be powered on or powered off based on a preset cut-off channel condition or a preset switch-on channel condition, so that main air enters an air inlet of the main air intercepting valve through the electromagnetic valve or an air outlet of the electromagnetic valve is led to the atmosphere. Therefore, the main air intercepting valve cuts off a passage through which the main air charges the train pipe through the main air intercepting valve or the main air charges the train pipe through the main air intercepting valve, so that synchronous pressure reduction or synchronous relief of the slave control locomotive along with the master control locomotive is realized. And a main air passage is quickly switched off or switched on through the electromagnetic valve and the main air intercepting valve, so that the braking and relieving actions of the slave control locomotive and the master control locomotive are completely synchronous.

Description

Technical Field

[0001] The present invention relates to the technical field of locomotive braking, and in particular to a wireless reconnection braking system and method. Background Art

[0002] The wireless reconnection control technology for heavy-load trains with a capacity of 10,000 tons is one of the core technologies for heavy-load railway transportation. The locomotive formation mode adopted by domestic heavy-load wireless reconnection is a master locomotive and a maximum of three slave locomotives. The master locomotive's braking command is transmitted to the slave locomotive through a wireless communication network. The slave locomotive brake responds to the master locomotive's brake command to achieve synchronous control of the brake. In actual applications, the slave locomotive brake has network communication and other problems that make it impossible to maintain synchronous control with the master locomotive. That is, the master locomotive brake is braking while the slave locomotive brake is replenishing air, or the master locomotive is relieving while the slave locomotive brake is braking, causing large impulses between vehicles, bringing safety hazards to the entire train and making it impossible to ensure its safe operation.

[0003] In view of the above problems, patent CN103640594A discloses a control method for the front and rear shutoff of an electric locomotive train pipe, which discloses closing the front shutoff valve between the total air source and the relay valve, cutting off the passage for charging the total air to the train pipe, and placing the relay valve in the braking position through the balancing air cylinder, thereby forming an exhaust pressure relief passage for the train pipe through the rear shutoff valve and the relay valve; opening the front shutoff valve between the total air source and the relay valve, opening the passage for charging the total air to the train pipe, and placing the relay valve in the relief position through the balancing air cylinder, thereby forming a passage for the total air source to pass through the front shutoff valve, the relay valve and the rear shutoff valve in sequence. The air charging passage of the train pipe is opened; the front shut-off valve located between the total air source and the relay valve is closed to cut off the air charging passage of the total air direction train pipe, and the equalizing air cylinder makes the relay valve in the pressure maintaining position. However, the above content exists in that the air charging, exhausting and pressure maintaining of the train pipe are realized through the combined control of the front shut-off valve and the rear shut-off valve. The control logic is relatively complex, and the coordinated operation control logic involving multiple valves is complex, which increases the difficulty of system debugging and maintenance. It is impossible to realize wireless communication and coordinated control between the master locomotive and the slave locomotive, and lacks a multi-scenario trigger mechanism, and cannot cope with complex operation scenarios. Summary of the invention

[0004] In view of the shortcomings existing in the related art, the purpose of the present invention is to provide a wireless reconnection braking system and method to solve the technical problems that the control logic of the prior art is relatively complex, the coordinated operation control logic involving multiple valves is complex, which increases the difficulty of system debugging and maintenance, and cannot achieve wireless communication and coordinated control between the master locomotive and the slave locomotive. In addition, there is a lack of a multi-scenario trigger mechanism and it is unable to cope with complex operating scenarios.

[0005] The present invention provides a wireless reconnection braking system, comprising:

[0006] A slave vehicle brake control unit is communicatively connected to a master vehicle brake control unit;

[0007] A solenoid valve is electrically connected to the brake control unit of the slave vehicle, and an air inlet pipeline of the solenoid valve is connected to the main air duct;

[0008] A main air shutoff valve, the pipeline of which is connected to the exhaust port of the solenoid valve and is electrically connected to the brake control unit of the slave vehicle;

[0009] The slave vehicle brake control unit is configured as follows:

[0010] The brake control unit of the slave locomotive controls the solenoid valve to be energized based on a preset cut-off path condition, so that the total air enters the air inlet of the total air cut-off valve through the solenoid valve, and the total air cut-off valve cuts off the total air from charging the train pipe through the total air cut-off valve, thereby achieving synchronous decompression of the slave locomotive following the master locomotive;

[0011] The brake control unit of the slave locomotive controls the solenoid valve to lose power based on a preset connection path condition, so that the exhaust port of the solenoid valve is connected to the atmosphere, and the total air is charged into the train pipe through the total air shut-off valve, so that the slave locomotive follows the master locomotive in synchronous relief.

[0012] The embodiment of the present invention can receive the braking command of the master control machine in real time through the communication connection between the brake control unit of the slave locomotive and the brake control unit of the master locomotive. Through the rapid action of the solenoid valve and the main air shut-off valve, the main air passage can be quickly cut off or connected, thereby realizing rapid decompression and relief of the train and ensuring that the braking and relief actions of the slave locomotive and the master locomotive are completely synchronized.

[0013] In some embodiments of the present invention, the preset cut-off path condition includes:

[0014] When the brake control unit of the slave vehicle receives the brake command forwarded by the brake control unit of the master vehicle and the brake control unit of the slave vehicle detects that the flow meter has flow in the first preset time period,

[0015] Or, when the slave vehicle brake control unit receives the life signal forwarded by the master vehicle brake control unit,

[0016] Or, when the slave vehicle brake control unit receives the total air shutoff valve cut-off signal forwarded by the master vehicle brake control unit,

[0017] Or, when the slave vehicle brake control unit detects that the pressure of the total wind pressure sensor is lower than a first threshold,

[0018] When any of the above conditions is met, the preset path cutting condition is met.

[0019] The embodiments of the present invention ensure that the system can reliably cut off the passage in various abnormal situations by presetting the conditions for cutting off the passage, including multiple trigger conditions, to avoid system failure caused by single point failures, and to adapt to different operating conditions and abnormal situations, ensuring that the system can cut off the passage in time and take braking measures in situations that may cause safety hazards.

[0020] In some embodiments of the present invention, the preset connection path condition includes:

[0021] When the slave vehicle brake control unit receives the life signal forwarded by the master vehicle brake control unit normally and the slave vehicle brake control unit receives the release command forwarded by the master vehicle brake control unit,

[0022] Or, when the slave vehicle brake control unit receives the total wind shutoff valve connection signal forwarded by the master vehicle brake control unit and the slave vehicle brake control unit receives the release command forwarded by the master vehicle brake control unit,

[0023] Or, when the slave vehicle brake control unit detects that the pressure of the total wind pressure sensor is higher than the first threshold and the slave vehicle brake control unit receives a release command forwarded by the master vehicle brake control unit,

[0024] Or, when the slave vehicle brake control unit detects that the pressure of the train pipe pressure sensor is higher than the second threshold and the slave vehicle brake control unit receives a release command forwarded by the master vehicle brake control unit,

[0025] Or, when the slave vehicle brake control unit detects that the pressure of the train pipe is higher than the third threshold value within the second preset time period,

[0026] When any of the above conditions is met, the preset connection path condition is met.

[0027] The embodiments of the present invention ensure that the system can reliably connect the path under various circumstances by presetting the path connection conditions including a variety of trigger conditions, avoiding system failure caused by a single point failure, and can adapt to different operating conditions and abnormal situations. Through the combined design of a variety of conditions, it is ensured that in situations that may cause safety hazards, the system can promptly connect the path and take mitigation measures, thereby significantly improving the safety of train operation and reducing the risk of accidents.

[0028] In some embodiments of the present invention, the system further comprises:

[0029] A balancing control module, electrically connected to the brake control unit of the slave vehicle, wherein an exhaust pipe of the balancing control module is connected to a balancing pipe;

[0030] A flow meter, a pipeline connecting the total air shutoff valve and the balancing control module;

[0031] When the slave vehicle brake control unit receives the brake command from the master vehicle brake control unit, the balancing control module controls the pressure of the balancing pipe, and the balancing pipe discharges the pressure to the atmosphere through the balancing control module. The slave vehicle brake control unit detects that there is flow in the flow meter, which meets the preset cut-off path condition.

[0032] The embodiment of the present invention controls the pressure of the equalizing pipe through the equalizing control module to ensure that the brake pressures of the slave-controlled vehicle and the master-controlled vehicle are balanced, and the equalizing control module works in coordination with the flow meter and the brake control unit of the slave-controlled vehicle to ensure that the passage can be quickly and accurately cut off when a braking command is received, thereby improving the reliability of the system and avoiding brake failure caused by single-point failure.

[0033] In some embodiments of the present invention, the system further comprises:

[0034] The total air pressure sensor is arranged on the pipeline of the total air duct and is used to detect the pressure of the total air duct and determine the size of the pressure of the total air duct and a first threshold.

[0035] The embodiment of the present invention can detect the pressure of the main air duct in real time through the total wind pressure sensor, provide accurate pressure data for the system, ensure that the status of the main air duct can be understood in time, and provide a reliable basis for braking and relief operations. By comparing the detected total wind pressure with the first threshold, the system can intelligently determine whether corresponding measures need to be taken to avoid braking failure due to insufficient wind pressure, thereby improving the safety of train operation and reducing the risk of accidents caused by abnormal wind pressure.

[0036] In some embodiments of the present invention, the system further comprises:

[0037] The train pipe pressure sensor is arranged on the pipeline of the train pipe and is used to detect the pressure of the train pipe and determine the size of the pressure of the train pipe and a second threshold value.

[0038] The embodiment of the present invention detects the pressure of the train pipe in real time through the train pipe pressure sensor, provides accurate pressure data for the system, ensures that the status of the train pipe can be understood in time, and provides a reliable basis for braking and relief operations. By comparing the detected train pipe pressure with the second threshold, it can intelligently determine whether corresponding measures need to be taken, which significantly improves the safety of train operation and avoids braking failure or untimely relief due to insufficient train pipe pressure.

[0039] In some embodiments of the present invention, the system further comprises:

[0040] A relay valve, a pipeline connecting the exhaust port of the total air shut-off valve and the train pipe, is used to control the total air to be charged into the train pipe.

[0041] The embodiment of the present invention controls the flow and pressure of the total air charged into the train pipe through a relay valve, thereby ensuring the pressure stability of the train pipe and avoiding inaccurate braking or relief operations caused by pressure fluctuations. During braking or relief operations, the pressure of the train pipe can be quickly adjusted to ensure the pressure stability of the train pipe, improve the response speed and operating efficiency of the system, reduce system failures caused by failure of the total air shut-off valve, and improve the reliability and stability of the system.

[0042] In some embodiments of the present invention, the configuration of the slave vehicle brake control unit specifically includes:

[0043] After the slave-controlled vehicle brake control unit controls the solenoid valve to be energized, the air inlet of the solenoid valve is connected with the exhaust port of the solenoid valve, so that the total air enters the air inlet of the total air shut-off valve through the solenoid valve, and the total air shut-off valve is cut off, and the passage of the total air to charge the train pipe through the total air shut-off valve is cut off, and the total air cannot charge the train pipe through the relay valve, so that the slave-controlled locomotive follows the master-controlled locomotive in synchronous decompression;

[0044] After the slave vehicle brake control unit controls the solenoid valve to lose power, the passage between the air inlet and the exhaust port of the solenoid valve is blocked, and the exhaust port of the solenoid valve is connected to the atmosphere. The total air shut-off valve is put into operation, and the total air is connected to the passage for charging the train pipe through the total air shut-off valve. The total air is then charged to the train pipe through the relay valve, so that the slave locomotive follows the master locomotive in synchronous relief.

[0045] The embodiment of the present invention controls the energization and de-energization of the solenoid valve by the slave-controlled locomotive brake control unit, timely cuts off or connects the main air passage, quickly adjusts the pressure of the train pipe, realizes synchronous decompression and synchronous relief of the slave-controlled locomotive and the master-controlled locomotive, and improves the response speed and operating efficiency of the system.

[0046] Some embodiments of the present invention further provide a wireless reconnection braking method, comprising the following steps:

[0047] A solenoid valve control step, wherein the vehicle control brake control unit controls the solenoid valve to be energized or de-energized based on a preset cut-off path condition or a preset connect-path condition, and according to the energization or de-energization of the solenoid valve, the total air enters the air inlet of the total air shut-off valve through the solenoid valve or the exhaust port of the solenoid valve is connected to the atmosphere;

[0048] The total air shut-off valve control step is to cut off or connect the total air direction to the train pipe filling air passage of the relay valve according to whether the exhaust port of the solenoid valve is discharged into the atmosphere, so as to realize the synchronous decompression or synchronous braking of the slave locomotive following the master locomotive.

[0049] Compared with the prior art, the present invention can receive the braking command of the master locomotive in real time through the communication connection between the brake control unit of the slave locomotive and the brake control unit of the master locomotive. Through the rapid action of the solenoid valve and the main air shut-off valve, the main air passage can be quickly cut off or connected, thereby achieving rapid decompression and relief of the train and ensuring that the braking and relief actions of the slave locomotive and the master locomotive are completely synchronized. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 A schematic diagram of the structure of a wireless reconnection braking system provided by an embodiment of the present invention;

[0052] Figure 3 A flowchart of a slave vehicle brake control unit configuration provided by an embodiment of the present invention;

[0053] Figure 2 A flowchart of a wireless reconnection braking method provided in an embodiment of the present invention.

[0054] In the figure:

[0055] 1. Braking control unit of slave vehicle; 2. Solenoid valve; 3. Main air shut-off valve; 4. Relay valve; 5. Flow meter; 6. Balancing control module; 7. Train pipe pressure sensor; 8. Main air pressure sensor; 9. Wireless communication equipment; 10. Braking control unit of master vehicle; 11. Balancing pipe; 12. Train pipe; 13. Main air duct. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0058] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0059] The technical solution of the present invention is described in detail below in conjunction with specific embodiments and the accompanying drawings.

[0060] As attached Figure 1 As shown, the present invention provides a wireless reconnection braking system, comprising:

[0061] A slave vehicle brake control unit 1 is communicatively connected to a master vehicle brake control unit 10;

[0062] The solenoid valve 2 is electrically connected to the slave vehicle brake control unit 1, and the air inlet pipeline of the solenoid valve 2 is connected to the main air duct 13;

[0063] The main air shut-off valve 3 is connected to the exhaust port of the solenoid valve 2 through a pipeline and is electrically connected to the slave vehicle brake control unit 1;

[0064] The slave brake control unit 1 is configured as follows:

[0065] The brake control unit 1 of the slave locomotive controls the electromagnetic valve 2 to be energized based on a preset cut-off passage condition, so that the total air enters the air inlet of the total air cut-off valve 3 through the electromagnetic valve 2, and the total air cut-off valve 3 cuts off the passage of the total air to charge the train pipe 12 through the total air cut-off valve 3, so that the slave locomotive follows the master locomotive in synchronous decompression;

[0066] The brake control unit 1 of the slave locomotive controls the solenoid valve 2 to lose power based on a preset connection path condition, so that the exhaust port of the solenoid valve 2 is connected to the atmosphere, and the total air is charged into the train pipe 12 through the total air shut-off valve 3, so that the slave locomotive follows the master locomotive in synchronous relief.

[0067] The above system is based on the communication connection between the brake control unit of the slave locomotive and the brake control unit of the master locomotive and the preset path cutting conditions and preset path connecting conditions. Through the rapid action of the solenoid valve and the main air shut-off valve, it can quickly cut off or connect the main air path, achieve rapid decompression and relief of the train, and ensure that the braking and relief actions of the slave locomotive and the master locomotive are completely synchronized.

[0068] In order to avoid system failure caused by single point failure, adapt to different operating conditions and abnormal situations, and ensure that the system can cut off the path in time and take braking measures in case of safety hazards, the preset cutting-off conditions include:

[0069] When the slave vehicle brake control unit 1 receives the brake command forwarded by the master vehicle brake control unit 10 and the slave vehicle brake control unit 1 detects that the flow meter 5 has flow in the first preset time period,

[0070] Or, when the life signal forwarded by the main control vehicle brake control unit 10 received by the slave control vehicle brake control unit 1 is lost,

[0071] Or, when the slave vehicle brake control unit 1 receives the total air shutoff valve 3 cut-off signal forwarded by the master vehicle brake control unit 10,

[0072] Or, when the vehicle control brake control unit 1 detects that the pressure of the total wind pressure sensor 8 is lower than the first threshold,

[0073] When any of the above conditions is met, the preset cut-off path condition is met.

[0074] Optionally, the life signal forwarded by the master vehicle brake control unit 10 is used to indicate whether the working state of the master vehicle brake control unit 10 is normal.

[0075] Optionally, the cut-off signal of the main air shut-off valve 3 will disconnect the air supply from the main air cylinder to the brake air cylinder, brake cylinder or other components requiring air pressure, thereby achieving control or protection of the locomotive braking system.

[0076] In case of emergency braking or abnormal situation of the locomotive, the main control vehicle brake control unit 10 will send a signal to cut off the main air shut-off valve 3 to ensure that the locomotive can stop quickly and safely or avoid more serious faults.

[0077] In addition, in order to avoid system failure caused by single point failure, adapt to different operating conditions and abnormal situations, and ensure that the system can promptly connect the path and take mitigation measures in case of safety hazards, the preset connection conditions include:

[0078] When the slave control vehicle brake control unit 1 receives the life signal forwarded by the master control vehicle brake control unit 10 normally and the slave control vehicle brake control unit 1 receives the release command forwarded by the master control vehicle brake control unit 10,

[0079] Or, when the slave vehicle brake control unit 1 receives the total wind shutoff valve 3 connection signal forwarded by the master vehicle brake control unit 10 and receives the release command forwarded by the master vehicle brake control unit 10,

[0080] Or, when the slave vehicle brake control unit 1 detects that the pressure of the total wind pressure sensor 8 is higher than the first threshold and the slave vehicle brake control unit 1 receives a release command forwarded by the master vehicle brake control unit 10,

[0081] Or, when the slave vehicle brake control unit 1 detects that the pressure of the train pipe pressure sensor 7 is higher than the second threshold and the slave vehicle brake control unit 1 receives a release command forwarded by the master vehicle brake control unit 10,

[0082] Or, when the train control brake control unit 1 detects that the pressure of the train pipe 12 is higher than the third threshold value within the second preset time period,

[0083] When any of the above conditions is met, the preset connection path condition is met;

[0084] Optionally, the input signal of the main air shut-off valve 3 will activate the main air shut-off valve 3, causing it to open and allow air to flow from the main air cylinder to the braking system or other components requiring air pressure, thereby enabling the locomotive to perform braking, acceleration and other operations according to the instructions of the brake control unit.

[0085] In some embodiments of the present invention, the wireless reconnection braking system further includes:

[0086] The balancing control module 6 is electrically connected to the slave vehicle brake control unit 1, and the exhaust pipe of the balancing control module 6 is connected to the balancing pipe 11;

[0087] Flow meter 5, pipeline connecting the total air shutoff valve 3 and the balance control module 6;

[0088] When the slave vehicle brake control unit 1 receives the brake command from the master vehicle brake control unit 10, the balancing control module 6 controls the pressure of the balancing pipe 11, and the balancing pipe 11 discharges the pressure to the atmosphere through the balancing control module 6. The slave vehicle brake control unit 1 detects that there is flow in the flowmeter 5, and the preset cut-off condition is met.

[0089] Optionally, the flow meter 5 is electrically connected to the slave vehicle brake control unit 1 .

[0090] When the slave vehicle brake control unit 1 receives the brake command forwarded by the master vehicle brake control unit 10, the balancing control module 6 immediately controls the pressure of the balancing pipe 11 to discharge the pressure to the atmosphere, and detects the flow between the total air shut-off valve 3 and the balancing control module 6 in real time through the flow meter 5, providing feedback for the slave vehicle brake control unit 1, and through the coordinated work of the balancing control module 6, the flow meter 5 and the slave vehicle brake control unit 1, it is ensured that the passage can be cut off quickly and accurately when the brake command is received, and the balancing control module 6 can dynamically adjust the pressure of the balancing pipe 11 according to the brake command and the data fed back by the flow meter 5 to adapt to different operating conditions.

[0091] In addition, the pressure of the equalizing pipe 11 is discharged to the atmosphere through the equalizing control module 6, ensuring that the braking pressure of the slave control car and the master control car are consistent, avoiding unstable train operation due to uneven pressure, improving the safety of train operation, and reducing the risk of accidents. The equalizing control module 6 only adjusts the pressure of the equalizing pipe 11 when necessary, avoiding unnecessary energy consumption.

[0092] In some embodiments of the present invention, the wireless reconnection braking system further includes:

[0093] The total air pressure sensor 8 is arranged on the pipeline of the main air duct 13, and is used to detect the pressure of the main air duct 13 and determine the size of the pressure of the main air duct 13 and the first threshold.

[0094] The train pipe pressure sensor 7 is arranged on the pipeline of the train pipe 12, and is used to detect the pressure of the train pipe 12 and determine the size of the pressure of the train pipe 12 and the second threshold.

[0095] The relay valve 4 , a pipeline connecting the exhaust port of the total air shut-off valve 3 and the train pipe 11 , is used to control the total air to be charged into the train pipe 12 .

[0096] Optionally, the wireless reconnected braking system also includes a wireless communication device 9, which is used to forward the braking command, release command, life signal, main air shut-off valve 3 cut-off signal and main air shut-off valve 3 input signal of the main control vehicle braking control unit 10.

[0097] The total air pressure sensor can detect the pressure of the total air duct in real time, the train pipe pressure sensor can detect the pressure of the train pipe in real time, and the relay valve can control the flow and pressure of the total air entering the train pipe, which can provide accurate pressure data for the system and provide a reliable basis for braking and relief operations.

[0098] Furthermore, the configuration of the slave vehicle brake control unit 1 specifically includes:

[0099] Combined with Figure 2 As shown, after the slave control vehicle brake control unit 1 controls the solenoid valve 2 to be energized, the air inlet of the solenoid valve 2 is connected with the exhaust port of the solenoid valve 2, so that the total air enters the air inlet of the total air shut-off valve 3 through the solenoid valve 2, and the total air shut-off valve 3 is cut off, and the passage for the total air to charge the train pipe 12 through the total air shut-off valve 3 is cut off, and the total air cannot charge the train pipe 12 through the relay valve 4, so that the slave control locomotive follows the master control locomotive to achieve synchronous decompression;

[0100] Optionally, when the solenoid valve 2 is energized, the electromagnetic force will drive the valve core to move to a position so that the air inlet is connected to the output air path, allowing pressurized air to enter. At this time, the exhaust port is closed to prevent the loss of pressurized air. The solenoid valve 2 obtains the total wind and transmits the total wind direction to the total wind shut-off valve 3.

[0101] After the slave-controlled vehicle brake control unit 1 controls the solenoid valve 2 to lose power, the passage between the air inlet of the solenoid valve 2 and the exhaust port of the solenoid valve 2 is blocked, the exhaust port of the solenoid valve 2 is connected to the atmosphere, the total air shut-off valve 3 is put into operation, and the passage for the total air to charge the train pipe 12 through the total air shut-off valve 3 is connected. After that, the total air is charged to the train pipe 12 through the relay valve 4, so that the slave-controlled locomotive follows the master-controlled locomotive in synchronous relief.

[0102] Optionally, when the solenoid valve 2 loses power, the electromagnetic force disappears, and the valve core may move to another position due to the action of a spring or other mechanical force, causing the connection between the air inlet and the output air path to be cut off. At the same time, the exhaust port is opened, and the pressurized air in the solenoid valve 2 is discharged through the exhaust port, thereby reducing or releasing the braking force.

[0103] By controlling the power on and off of the solenoid valve 2 through the brake control unit 1 of the slave locomotive, the main air passage is cut off or connected in time, and the pressure of the train pipe is quickly adjusted to achieve synchronous decompression and relief of the slave locomotive and the master locomotive, thereby improving the response speed and operating efficiency of the system.

[0104] Reference Figure 3 As shown, an embodiment of the present invention also provides a wireless reconnection braking method, comprising the following steps:

[0105] Solenoid valve control step S1, the vehicle control brake control unit 1 controls the solenoid valve 2 to be energized or de-energized based on a preset cut-off path condition or a preset connect-on path condition, and according to the energization or de-energization of the solenoid valve 2, the total air enters the air inlet of the total air shut-off valve 3 through the solenoid valve 2 or the exhaust port of the solenoid valve 2 is connected to the atmosphere;

[0106] The total air shut-off valve control step S2 cuts off or connects the train pipe 12 air charging passage of the total air direction relay valve 4 according to whether the exhaust port of the solenoid valve 2 discharges into the atmosphere, so as to realize synchronous decompression or synchronous braking of the slave locomotive following the master locomotive.

[0107] Based on the above method, through the communication connection between the brake control unit 1 of the slave locomotive and the brake control unit 10 of the master locomotive, the brake command of the master locomotive can be received in real time. Through the rapid action of the solenoid valve 2 and the main air shut-off valve 3, the main air passage can be quickly cut off or connected, so as to realize rapid decompression and relief of the train, and ensure that the braking and relief actions of the slave locomotive and the master locomotive are completely synchronized.

[0108] It should be noted that the above is a reference to a wireless reconnection braking system and method, and the present invention is not limited thereto.

[0109] The embodiments of the present invention realize that through the communication connection between the brake control unit of the slave locomotive and the brake control unit of the master locomotive, the brake command of the master locomotive can be received in real time. Through the rapid action of the solenoid valve and the main air shut-off valve, the main air passage can be quickly cut off or connected, thereby realizing rapid decompression and relief of the train, ensuring that the braking and relief actions of the slave locomotive and the master locomotive are completely synchronized, and solving the problems of the prior art that the control logic is relatively complex, the control logic of the coordinated operation of multiple valves is complex, the difficulty of system debugging and maintenance is increased, the wireless communication and coordinated control between the master locomotive and the slave locomotive cannot be realized, and there is a lack of a multi-scenario trigger mechanism, and the technical problems of being unable to cope with complex operating scenarios.

[0110] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0111] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A wireless reconnection braking system, characterized in that: include: A slave vehicle brake control unit is communicatively connected to a master vehicle brake control unit; A solenoid valve is electrically connected to the brake control unit of the slave vehicle, and an air inlet pipeline of the solenoid valve is connected to the main air duct; A main air shutoff valve, the pipeline of which is connected to the exhaust port of the solenoid valve and is electrically connected to the brake control unit of the slave vehicle; The slave vehicle brake control unit is configured as follows: The brake control unit of the slave locomotive controls the solenoid valve to be energized based on a preset cut-off path condition, so that the total air enters the air inlet of the total air cut-off valve through the solenoid valve, and the total air cut-off valve cuts off the total air from charging the train pipe through the total air cut-off valve, thereby achieving synchronous decompression of the slave locomotive following the master locomotive; The brake control unit of the slave locomotive controls the solenoid valve to lose power based on a preset connection path condition, so that the exhaust port of the solenoid valve is connected to the atmosphere, and the total air is charged into the train pipe through the total air shut-off valve, so that the slave locomotive follows the master locomotive in synchronous relief.

2. The wireless reconnection braking system according to claim 1, characterized in that: The preset cut-off path conditions include: When the brake control unit of the slave vehicle receives the brake command forwarded by the brake control unit of the master vehicle and the brake control unit of the slave vehicle detects that the flow meter has flow in the first preset time period, Or, when the slave vehicle brake control unit receives the life signal forwarded by the master vehicle brake control unit, Or, when the slave vehicle brake control unit receives the total air shutoff valve cut-off signal forwarded by the master vehicle brake control unit, Or, when the slave vehicle brake control unit detects that the pressure of the total wind pressure sensor is lower than a first threshold, When any of the above conditions is met, the preset path cutting condition is met.

3. The wireless reconnection braking system according to claim 1, characterized in that: The preset access conditions include: When the slave vehicle brake control unit receives the life signal forwarded by the master vehicle brake control unit normally and the slave vehicle brake control unit receives the release command forwarded by the master vehicle brake control unit, Or, when the slave vehicle brake control unit receives the total wind shutoff valve connection signal forwarded by the master vehicle brake control unit and the slave vehicle brake control unit receives the release command forwarded by the master vehicle brake control unit, Or, when the slave vehicle brake control unit detects that the pressure of the total wind pressure sensor is higher than the first threshold and the slave vehicle brake control unit receives a release command forwarded by the master vehicle brake control unit, Or, when the slave vehicle brake control unit detects that the pressure of the train pipe pressure sensor is higher than the second threshold and the slave vehicle brake control unit receives a release command forwarded by the master vehicle brake control unit, Or, when the slave vehicle brake control unit detects that the pressure of the train pipe is higher than the third threshold value within the second preset time period, When any of the above conditions is met, the preset connection path condition is met.

4. The wireless reconnection braking system according to claim 2, characterized in that: The system further comprises: A balancing control module, electrically connected to the brake control unit of the slave vehicle, wherein an exhaust pipe of the balancing control module is connected to a balancing pipe; A flow meter, a pipeline connecting the total air shutoff valve and the balancing control module; When the slave vehicle brake control unit receives the brake command from the master vehicle brake control unit, the balancing control module controls the pressure of the balancing pipe, and the balancing pipe discharges the pressure to the atmosphere through the balancing control module. The slave vehicle brake control unit detects that there is flow in the flow meter, which meets the preset cut-off path condition.

5. The wireless reconnection braking system according to claim 2 or 3, characterized in that: The system further comprises: The total air pressure sensor is arranged on the pipeline of the total air duct and is used to detect the pressure of the total air duct and determine the size of the pressure of the total air duct and a first threshold.

6. The wireless reconnection braking system according to claim 3, characterized in that: The system further comprises: The train pipe pressure sensor is arranged on the pipeline of the train pipe and is used to detect the pressure of the train pipe and determine the size of the pressure of the train pipe and a second threshold value.

7. The wireless reconnection braking system according to claim 1, characterized in that: The system further comprises: A relay valve, a pipeline connecting the exhaust port of the total air shut-off valve and the train pipe, is used to control the total air to be charged into the train pipe.

8. The wireless reconnection braking system according to claim 7, characterized in that: The configuration of the slave vehicle brake control unit specifically includes: After the slave locomotive brake control unit controls the solenoid valve to be energized, the air inlet of the solenoid valve is connected with the exhaust port of the solenoid valve, so that the total air enters the air inlet of the total air shut-off valve through the solenoid valve, and the total air shut-off valve is cut off, cutting off the passage of the total air to charge the train pipe through the total air shut-off valve. The total air cannot charge the train pipe through the relay valve, thereby achieving synchronous decompression of the slave locomotive following the master locomotive.

9. The wireless reconnection braking system according to claim 7, characterized in that: The configuration of the slave vehicle brake control unit specifically includes: After the slave vehicle brake control unit controls the solenoid valve to lose power, the passage between the air inlet and the exhaust port of the solenoid valve is blocked, and the exhaust port of the solenoid valve is connected to the atmosphere. The total air shut-off valve is put into operation, and the total air is connected to the passage for charging the train pipe through the total air shut-off valve. The total air is then charged to the train pipe through the relay valve, so that the slave locomotive follows the master locomotive in synchronous relief.

10. A wireless reconnection braking method, characterized in that: The steps include: A solenoid valve control step, wherein the vehicle control brake control unit controls the solenoid valve to be energized or de-energized based on a preset cut-off path condition or a preset connect-path condition, and according to the energization or de-energization of the solenoid valve, the total air enters the air inlet of the total air shut-off valve through the solenoid valve or the exhaust port of the solenoid valve is connected to the atmosphere; The total air shut-off valve control step is to make the total air shut-off valve cut off or connect the train pipe filling air passage of the total air direction to the relay valve according to whether the exhaust port of the solenoid valve is discharged into the atmosphere, so as to realize the synchronous decompression or synchronous braking of the slave locomotive following the master locomotive.

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