CN-121990016-A - Rail vehicle braking instruction transmission method and system and rail vehicle

Abstract

The invention provides a method and a system for transmitting a braking instruction of a railway vehicle and the railway vehicle, wherein the method comprises the following steps of adopting an electric control braking instruction sent by a vehicle network as the braking instruction of the railway vehicle under the condition that the current driving mode of the railway vehicle is a full-automatic driving mode; under the condition that the current driving mode of the railway vehicle is the manual driving mode, a braking instruction sent by an electric control braking master valve is used as a braking instruction of the railway vehicle, the braking instruction of the railway vehicle is transmitted through a braking instruction transmission loop, the braking instruction transmission loop comprises an electric control instruction transmission loop and a pneumatic control instruction transmission loop, and the braking execution part is used for receiving the braking instruction of the railway vehicle and executing braking action according to the braking instruction of the railway vehicle. The invention realizes the redundant transmission of the braking command of the network and the electric control brake master valve, can meet the transmission requirement and braking control of the braking command in the full-automatic driving mode and the manual driving mode, and improves the safety and the adaptability of the braking system.

Inventors

• WANG XIAODONG
• WANG XIANGBO
• WANG YOUJIE
• WANG SHOUFENG
• LI HUAN

Assignees

• 中车青岛四方机车车辆股份有限公司

Dates

Publication Date

20260508

Application Date

20260323

Claims (20)

1. 1. A method of transmitting a brake command for a railway vehicle, comprising: Under the condition that the current driving mode of the railway vehicle is a full-automatic driving mode, an electric control braking instruction sent by a vehicle network is adopted as a braking instruction of the railway vehicle; under the condition that the current driving mode of the railway vehicle is a manual driving mode, a braking instruction sent by an electric control braking master valve is adopted as a braking instruction of the railway vehicle; the brake command transmission circuit comprises an electric control command transmission circuit and a pneumatic control command transmission circuit, wherein the electric control command transmission circuit is used for transmitting electric control commands, and the pneumatic control command transmission circuit is used for transmitting pneumatic control commands; and receiving a braking instruction of the railway vehicle through a braking execution part, and executing braking action according to the braking instruction of the railway vehicle.
2. 2. The method for transmitting braking orders of rail vehicles according to claim 1, wherein the braking orders sent by the electric control brake master valve comprise electric control orders and/or pneumatic control orders.
3. 3. The method of claim 1, wherein the electric control command transmission circuit and the pneumatic control command transmission circuit are redundant to each other; The method further comprises the steps of: And under the condition that the electric control command transmission loop fails, adopting the pneumatic control command transmission loop to transmit a braking command.
4. 4. The method for transmitting a brake command of a railway vehicle according to claim 3, wherein the electric control command transmission circuit adopts a double electric control circuit structure which is mutually redundant, and the pneumatic control command transmission circuit adopts a double pneumatic control circuit structure which is mutually redundant; The method further comprises the steps of: under the condition that one electric control loop fails in the double electric control loop structure, the other electric control loop is adopted for transmitting braking instructions; And under the condition that one pneumatic control loop fails in the double pneumatic control loop structure, the other pneumatic control loop is adopted for transmitting the braking instruction.
5. 5. The method of transmitting a brake command for a railway vehicle according to claim 1, wherein the brake command transmission circuit is connected to the brake actuating member through a brake circuit; Further comprises: And carrying out secondary transmission on the braking command transmitted by the braking command transmission loop through the braking loop.
6. 6. The method of claim 5, wherein the brake circuit comprises a dual brake sub-circuit configuration that is redundant with each other; The method further comprises the steps of: and under the condition that one sub-loop in the brake loop fails, adopting the other sub-loop to transmit the brake command.
7. 7. The method of claim 1, wherein the brake actuating member comprises a single channel module and a brake caliper; The method further comprises the steps of: receiving a braking instruction of the railway vehicle through the single-channel module, and converting the braking instruction of the railway vehicle into an output target braking cylinder pressure; a brake clamping force is provided by the brake caliper under the target brake cylinder pressure.
8. 8. The method according to claim 1, wherein an electronic brake control unit is provided between the brake command transmission circuit and the brake executing member; The method further comprises the steps of: calculating the total braking force requirement of the railway vehicle according to the braking instruction of the railway vehicle and the vehicle load signal through the electronic braking control unit; calculating an air braking force value to be supplemented according to an electric braking force value provided by a traction system and the total braking force requirement through the electronic braking control unit; And sending the air braking force value to the brake execution component through the electronic brake control unit so as to perform electric-air hybrid braking.
9. 9. The method for transmitting the braking instruction of the railway vehicle according to claim 8, wherein the vehicle load signal is the pressure of an air spring of the self-propelled system, when the load signal of a local axle fails, the load signal of an adjacent axle of the vehicle is adopted to replace the load signal, and when the load signals of all axles of the vehicle fail, the load signal is calculated according to the pressure of the air spring under the overload condition.
10. 10. The method for transmitting a brake command for a railway vehicle according to claim 1, wherein the method is applicable to transmission of brake commands for a plurality of marshalling trains; two axles of the three axles of the head car are controlled by a frame, and the other axle is controlled by a shaft; axle control is adopted for an axle of the intermediate vehicle; Two axles of the three axles of the tail car are controlled by a frame, and the other axle is controlled by a shaft.
11. 11. The railway vehicle brake instruction transmission method according to any one of claims 1 to 10, characterized by further comprising: and under the condition that the safety braking loop is in power failure or the vehicle is separated, the braking command of the railway vehicle is a pure air emergency braking command so as to cut off the electric braking and perform pure air braking.
12. 12. The railway vehicle brake instruction transmission method according to any one of claims 1 to 10, characterized by further comprising: And carrying out longitudinal impulse control on the output of the braking force based on the braking instruction of the railway vehicle.
13. 13. The method according to any one of claims 1 to 10, wherein in the case where the total reservoir pressure falls to a preset pressure value, the brake command of the railway vehicle is a parking brake command to perform parking brake.
14. 14. The method of transmitting a brake command for a railway vehicle according to claim 13, further comprising: Different voltage values are output through different lifting angles of the electronic parking switch; And outputting or discharging corresponding compressed air through the electronic parking valve according to the output voltage value of the electronic parking switch, and performing gradual control of parking braking.
15. 15. The railway vehicle brake instruction transmission method according to any one of claims 1 to 10, wherein the brake instruction of the railway vehicle is a hold brake instruction to perform hold braking; Further comprises: When the train is started, after a vehicle network sends out a release instruction, brake release is kept; when the release instruction is not received, the brake is kept to be automatically released after the train reaches a preset speed; in the emergency traction mode, the braking is kept automatically released after the train receives the traction command and exceeds the set time.
16. 16. The railway vehicle brake instruction transmission method according to any one of claims 1 to 10, wherein the brake instruction of the railway vehicle is an anti-lock brake instruction to perform anti-lock braking; Further comprises: controlling the anti-lock control valve to discharge brake air to raise the wheel speed in the case that the wheel speed of the vehicle satisfies the exhaust opening condition; in the case where the wheel speed of the vehicle satisfies the exhaust stop condition, the antilock brake control valve is controlled to stop discharging the brake air so that the wheel speed is lowered.
17. 17. A railway vehicle brake command transmission system, comprising: The vehicle network is used for taking an electric control braking instruction sent by the vehicle network as a braking instruction of the railway vehicle under the condition that the current driving mode of the railway vehicle is a full-automatic driving mode; The electric control brake master valve is used for taking a brake command sent by the electric control brake master valve as a brake command of the railway vehicle under the condition of the current driving mode of the railway vehicle and the manual driving mode; The brake command transmission circuit is used for transmitting brake commands of the railway vehicle, and comprises an electric control command transmission circuit and a pneumatic control command transmission circuit, wherein the electric control command transmission circuit is used for transmitting electric control commands, and the pneumatic control command transmission circuit is used for transmitting pneumatic control commands; And the brake executing component is used for receiving the brake command of the railway vehicle and executing the brake action according to the brake command of the railway vehicle.
18. 18. The railway vehicle brake command transmission system of claim 17, wherein the brake command issued by the electronically controlled brake master valve comprises an electronically controlled command and/or a pneumatically controlled command.
19. 19. The railway vehicle brake command transmission system of claim 17, wherein the electrical command transmission circuit and the pneumatic command transmission circuit are redundant with each other, and wherein the pneumatic command transmission circuit is employed to transmit brake commands in the event of failure of the electrical command transmission circuit.
20. 20. The railway vehicle brake command transmission system according to claim 19, wherein the electric command transmission circuit adopts a dual electric control circuit structure which is mutually redundant, and the pneumatic command transmission circuit adopts a dual pneumatic control circuit structure which is mutually redundant; under the condition that one electric control loop fails in the double electric control loop structure, the other electric control loop is adopted for transmitting braking instructions; And under the condition that one pneumatic control loop fails in the double pneumatic control loop structure, the other pneumatic control loop is adopted for transmitting the braking instruction.

Description

Rail vehicle braking instruction transmission method and system and rail vehicle Technical Field The invention relates to the technical field of rail transit, and provides a rail vehicle braking instruction transmission method and system and a rail vehicle. Background Currently, a commercial vehicle air brake system and a rubber-tyred vehicle commonly adopt a pedal control brake master valve for brake control, and the mode can only meet the brake requirement in a manual driving mode. With the development of the full-automatic driving technology of the trolley bus, the traditional single pneumatic braking instruction transmission mode cannot meet the requirements of accurate, rapid and reliable transmission of braking instructions in the full-automatic driving mode. Disclosure of Invention The invention provides a rail vehicle braking instruction transmission method and system and a rail vehicle, which are used for solving the defect that the existing commercial vehicle air braking system and rubber-tyred vehicle cannot meet the requirement of accurate, quick and reliable transmission of braking instructions in a full-automatic driving mode by adopting a single pedal pneumatic control mode. The invention realizes the redundant transmission of the braking command of the network and the electric control brake master valve, can meet the transmission requirement and braking control of the braking command in the full-automatic driving mode and the manual driving mode, and improves the safety and the adaptability of the braking system. The invention provides a method for transmitting a braking instruction of a railway vehicle, which comprises the following steps: The method comprises the steps of adopting an electric control braking instruction sent by a vehicle network as a braking instruction of a railway vehicle when a current driving mode of the railway vehicle is a full-automatic driving mode, adopting a braking instruction sent by an electric control braking master valve as a braking instruction of the railway vehicle when the current driving mode of the railway vehicle is a manual driving mode, transmitting the braking instruction of the railway vehicle through a braking instruction transmission loop, wherein the braking instruction transmission loop comprises an electric control instruction transmission loop and a pneumatic control instruction transmission loop, the electric control instruction transmission loop is used for transmitting the electric control instruction, the pneumatic control instruction transmission loop is used for transmitting the pneumatic control instruction, and receiving the braking instruction of the railway vehicle through a braking execution part and executing braking action according to the braking instruction of the railway vehicle. According to the method for transmitting the braking instruction of the railway vehicle, the braking instruction sent by the electric control braking master valve comprises an electric control instruction and/or a pneumatic control instruction. According to the method for transmitting the braking instruction of the railway vehicle, the electric control instruction transmission loop and the pneumatic control instruction transmission loop are redundant; The method further comprises the step of adopting the pneumatic control command transmission loop to transmit a braking command under the condition that the electric control command transmission loop fails. The method for transmitting the braking instruction of the railway vehicle, provided by the invention, comprises the steps of adopting a double electric control loop structure with mutual redundancy in the electric control instruction transmission loop, adopting a double pneumatic control loop structure with mutual redundancy in the pneumatic control instruction transmission loop, adopting another electric control loop to transmit the braking instruction under the condition that one electric control loop fails in the double electric control loop structure, and adopting another pneumatic control loop to transmit the braking instruction under the condition that one pneumatic control loop fails in the double pneumatic control loop structure. According to the method for transmitting the braking instruction of the railway vehicle, the braking instruction transmission loop is connected with the braking execution component through the braking loop; the brake command transmission circuit also comprises a brake command transmission circuit for transmitting the brake command transmitted by the brake command transmission circuit in a second stage. According to the method for transmitting the braking instruction of the railway vehicle, the braking loop comprises a double-braking sub-loop structure which is redundant; The method further comprises the step of adopting another sub-loop to transmit the braking instruction under the condition that one sub-loop in the braking loop fails. According to the method for tr