Air braking system of rubber wheel train and control method of air braking system

Abstract

The invention discloses an air braking system of a rubber wheel train and a control method of the air braking system, and relates to the technical field of train braking. The air braking system of the rubber wheel train comprises a first user control module, a single vehicle braking module, a braking air supply module, a suspension system module and a braking transmission module, and the first user control module is electrically connected with the single vehicle braking module, the braking air supply module, the suspension system module and the braking transmission module; the first user control module sends out control instructions to control the single vehicle braking module, the braking air supply module, the suspension system module and the braking transmission module to act, so that the rubber wheel train executes corresponding braking behaviors according to the instructions. The problem that an existing rubber wheel train is poor in stable deceleration control effect is solved; meanwhile, the operation scene of the rubber wheel train is complex, and faults occurring in real time cannot be processed and detected in time.

Description

Technical Field

[0001] The present invention relates to the technical field of train braking, and in particular to an air braking system of a rubber-tyred train and a control method thereof. Background Art

[0002] At present, rubber-tyred trams, also known as rubber-tyred trains, do not need to build platforms beside the track, and have a small turning radius, so the track can be laid directly on the existing roads in the city. Rubber-tyred trains can run in commercial areas without independent right of way, so that their operating range intersects with pedestrians and vehicles.

[0003] When an emergency occurs on a rubber-tyred train, the priority is to quickly and smoothly decelerate to protect the safety of pedestrians and passengers. However, the control effect of smooth deceleration on existing rubber-tyred trains is poor. At the same time, the operation scenarios of rubber-tyred trains are complex, and it is impossible to handle and detect real-time faults in a timely manner. There is currently no effective solution to the above problems. Summary of the invention

[0004] Purpose of the invention: To provide an air brake system for a rubber-wheeled train and a control method thereof, so as to solve at least one of the problems existing in the above-mentioned prior art.

[0005] Technical solution: An air brake system for a rubber-wheeled train, comprising: a first user control module, a single vehicle brake module, a brake air supply module, a suspension system module, and a brake transmission module, wherein the first user control module is electrically connected to the single vehicle brake module, the brake air supply module, the suspension system module, and the brake transmission module respectively; The control instructions are sent out through the first user control module to respectively control the actions of the single vehicle brake module, the brake air supply module, the suspension system module and the brake transmission module, so that the rubber-wheeled train performs corresponding braking actions according to the instructions.

[0006] Preferably, the first user control module comprises: a foot brake valve and a mushroom button, wherein the foot brake valve converts the collected pedal stroke into an analog signal and a switch signal and sends them to the rubber-wheeled train, and the brake level varies in proportion to the brake pedal stepping stroke, so as to achieve follow-up control during the braking and release process of the train; The mushroom button is used to output a digital signal to the rubber-wheeled train when pressed to apply emergency braking.

[0007] Preferably, the foot brake valve comprises: two analog signals, one for outputting a digital signal for common brake control and one for outputting a digital signal for emergency brake control; The foot brake valve output and stroke size correspond to the compressed air to serve as redundant control for purely mechanical braking when the digital signal is lost.

[0008] Preferably, the bicycle brake module comprises: a normal / emergency brake module and a parking brake module, the normal / emergency brake module comprises: a brake isolation valve for isolating the brake air source when the brake does not relieve the fault, a test connector, an emergency brake device, a single channel module and a two-way check valve, the test connector is used to detect the status of the pressure sensor or other components through an external pressure gauge when a fault or maintenance occurs; The emergency brake device includes: a pressure limiting valve and an emergency solenoid valve, which are used to output air not exceeding a preset pressure to the brake cylinder to apply emergency braking when the emergency brake triggering condition is triggered; The single-channel module is used to obtain a braking instruction of the rubber-tyred train, determine a target air pressure of a brake cylinder of a connected bogie axle according to the braking instruction, and control the brake cylinder to apply braking according to the target air pressure; The two-way check valve is arranged at the rear ends of the emergency brake device and the single-channel module, and is used to output the pressure on the side where the air pressure output by the emergency brake device and the single-channel module is larger.

[0009] Preferably, the brake air supply module comprises: an air compressor for generating compressed air, a pipeline for transmitting compressed air and a four-circuit protection valve, wherein the air compressor is connected to the four-circuit protection valve through the pipeline; The four-circuit protection valve includes dividing the input compressed air into four circuit outputs. When one of the circuits fails, it ensures that the predetermined air pressure is in the other circuits, and the four air outlets are independent of each other, and are respectively output to the normal / emergency brake module, the foot brake valve, the parking brake module and the suspension system module. Each circuit has a preset opening pressure so that when the system air pressure does not reach the preset condition, the train cannot start, and any leakage in the four downstream pipelines is not related to the other three pipelines, so that the train can perform related operations normally.

[0010] Preferably, the suspension system module is used to achieve vertical vibration reduction when adjusting the height of the train; the suspension system module includes: a pressure sensor, and the pressure sensor is used to collect air spring pressure and feedback train weight information.

[0011] Preferably, the brake transmission module includes: a pipeline for transmitting compressed air and a flow amplification valve, wherein the flow amplification valve is used to input the pressure of the redundant output of the foot brake valves at both ends of the train as a pilot pressure and output it to the remote normal / emergency brake module to reduce the response time of the remote brake application.

[0012] Preferably, it further comprises: a fault detection module, wherein the fault detection module is electrically connected to the single vehicle brake module, the brake air supply module, the suspension system module and the brake transmission module respectively.

[0013] In order to achieve the above-mentioned purpose, according to another aspect of the present application, an air brake control method for a rubber-tyred train is also provided.

[0014] According to the air brake control method of the rubber-tyred train of the present application, which is applied to the air brake system of the rubber-tyred train as described above, the control method includes: When in normal working condition, the train network receives the braking command and braking level issued by the foot brake valve, and combines the vehicle weight information fed back by the empty spring pressure signal collected by the pressure sensor; The braking force required by the vehicle is calculated, and the normal / emergency brake module determines the target air pressure of the brake cylinder of the connected bogie axle according to the braking force, and controls the brake cylinder to apply braking according to the target air pressure.

[0015] As a preference, it also includes: When the vehicle network fails, the normal / emergency brake module receives the brake command and brake level from the foot brake valve, and applies a preset air pressure to the brake cylinder to apply the brake; When both the analog and switch signals output by the foot brake valve are lost, the normal / emergency brake module outputs air pressure corresponding to the stroke of the foot brake valve to the brake cylinder to apply braking; When the foot brake valve is stepped to the maximum stroke, the mushroom button is pressed, or the emergency solenoid valve loses power, the normal / emergency brake module outputs compressed air not exceeding the preset pressure to the brake cylinder according to the digital signal to apply emergency braking.

[0016] Preferably, a first pressure sensor for collecting air spring pressure is provided in the suspension system module; Among them, when the detection pressure exceeds the normal range, the train network will set the vehicle load to the default value, and the train network will calculate the braking force corresponding to the current braking level based on the default value.

[0017] Preferably, the normal / emergency brake module is provided with a second pressure sensor for collecting the normal brake cylinder pressure; Among them, when the common brake cylinder pressure is lower than the preset value and exceeds the threshold time, it is judged that the vehicle has insufficient braking force and no processing is required during the operation of the vehicle; On the contrary, when the pressure of the common brake cylinder is higher than the preset value and exceeds the threshold time, it is judged that the vehicle's braking is not relieved, and the common / emergency brake is isolated by operating the isolation plug door of the shaft where the common brake cylinder is located to the isolation position.

[0018] Preferably, a third pressure sensor for collecting parking brake cylinder pressure is provided in the parking brake module; When the parking brake cylinder pressure is lower than a preset value, the isolation plug valve upstream of the parking brake cylinder is operated to the isolation position to isolate the parking brake; On the contrary, when the parking brake cylinder pressure is higher than the preset value and exceeds the threshold time, no processing is required.

[0019] Preferably, the brake transfer module is provided with a fourth pressure sensor for collecting the air pressure of the brake transfer pipeline; Among them, when the air pressure in the brake transmission pipeline is lower than the preset value, the vehicle will limit the speed according to the current air pressure to make the normal / emergency braking use air.

[0020] Beneficial effect: In the embodiment of the present application, the air brake system is optimized, and control instructions are issued by the first user control module to respectively control the actions of the single-vehicle brake module, the brake air supply module, the suspension system module and the brake transmission module, so that the rubber-wheeled train performs corresponding braking actions according to the instructions, thereby achieving the purpose of rapid deceleration, thereby achieving the technical effect of ensuring the stability of the train and being able to handle it in time when a fault occurs, thereby solving the problem that the existing rubber-wheeled train has poor control effect on smooth deceleration; at the same time, the operating scenarios of rubber-wheeled trains are complex, and there is a technical problem that real-time faults cannot be handled and detected in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural block diagram of the air brake system of the rubber-wheeled train of the present invention; Figure 2 is a structural block diagram of a single-vehicle brake module of an air brake system of a rubber-tyred train according to the present invention; and Figure 3 It is a flow chart of the air brake control method of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, 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 comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] like Figure 1-3 As shown, the present application relates to an air brake system for a rubber-wheeled train and a control method thereof. Figure 1-2 As shown, the air brake system of the rubber-wheeled train includes: a first user control module, a single vehicle brake module, a brake air supply module, a suspension system module, and a brake transmission module. The first user control module is electrically connected to the single vehicle brake module, the brake air supply module, the suspension system module, and the brake transmission module respectively; it can achieve a good electrical connection effect between the modules, thereby ensuring a good electrical signal transmission effect. Among them, the first user control module can be a driver's cab control module; it can achieve a good human-computer interaction effect.

[0027] The first user control module issues control instructions to control the single vehicle brake module, the brake air supply module, the suspension system module and the brake transmission module respectively, so that the rubber-tyred train performs corresponding braking actions according to the instructions, thereby achieving a good module control effect.

[0028] Specifically, the first user control module is used to receive user instructions and generate control signals, and is electrically connected to other modules and is responsible for coordinating the actions of each module.

[0029] The single vehicle brake module is responsible for independent braking of a single vehicle (carriage). It includes but is not limited to: electromagnetic brakes or hydraulic brakes to provide precise braking force.

[0030] The brake air supply module is responsible for providing air source support to ensure the stability of the air pressure in the brake system. It includes but is not limited to: compressors, air tanks and related pipelines to ensure sufficient power support under various working conditions.

[0031] The suspension system module optimizes the stability and comfort of the train during braking by adjusting the rigidity or damping characteristics of the suspension system. It uses electronic airbag suspension or active suspension technology.

[0032] The brake transfer module is responsible for transmitting control instructions from the main control module to the specific brake device to ensure the accuracy and synchronization of the action.

[0033] From the above description, it can be seen that the present application achieves the following technical effects: In an embodiment of the present application, an optimized air brake system is adopted, and control instructions are issued by the first user control module to respectively control the actions of the single-vehicle brake module, the brake air supply module, the suspension system module and the brake transmission module, so that the rubber-wheeled train performs corresponding braking actions according to the instructions, thereby achieving the purpose of rapid deceleration, thereby achieving the technical effect of ensuring the stability of the train and being able to handle it in time when a fault occurs, thereby solving the problem that the existing rubber-wheeled train has poor control effect on smooth deceleration; at the same time, the operating scenarios of rubber-wheeled trains are complex, and there is a technical problem that real-time faults cannot be handled and detected in time.

[0034] Furthermore, the first user control module includes: a foot brake valve and a mushroom button, wherein the foot brake valve converts the collected pedal stroke into an analog signal and a switch signal and sends them to the rubber-wheeled train, and the brake level changes proportionally with the brake pedal stepping stroke, so as to achieve follow-up control during the braking and release process of the train; The mushroom button is used to output a digital signal to the rubber-wheeled train when pressed to apply emergency braking. It can be understood that sensitive follow-up control of the train during braking and relief can be achieved; The foot brake valve converts the driver's brake pedal stroke into a signal for use by the train braking system.

[0035] Analog signal: reflects the depth of the brake pedal, is proportional to the braking force, and is used to control the braking level.

[0036] Switching signal: used as a trigger signal or emergency brake signal to detect whether the preset threshold is reached.

[0037] The mushroom button is used to trigger the emergency brake or reset the system. The button is large and prominently located, which is convenient for the driver to operate quickly in an emergency. It is usually designed to be locked (remains locked after being pressed) to ensure the continuous implementation of the emergency brake.

[0038] Furthermore, the foot brake valve includes: two analog signals, one for outputting a digital signal for normal braking control and one for outputting a digital signal for emergency braking control; The foot brake valve output corresponds to the stroke size and compressed air to serve as a redundant control for purely mechanical braking when the digital signal is lost. It can be understood that two analog signals (one redundant) and one digital signal output are used for normal braking control, and one digital signal (at the maximum stroke) output is set for emergency braking control.

[0039] Further, the bicycle brake module includes: a common / emergency brake module and a parking brake module, the common / emergency brake module includes: a brake isolation valve for isolating the brake air source when the brake does not relieve the fault, a test connector, an emergency brake device, a single channel module and a two-way check valve, the test connector is used to detect the status of the pressure sensor or other components through an external pressure gauge when a fault or maintenance occurs; The emergency braking device includes: a pressure-limiting valve and an emergency solenoid valve, which are used to output air not exceeding a preset pressure to the brake cylinder to apply emergency braking when the emergency braking triggering condition is triggered; wherein the emergency braking triggering conditions include but are not limited to: pressing the mushroom button or the emergency solenoid valve losing power, etc.

[0040] The single-channel module is used to obtain a braking instruction of the rubber-tyred train, determine a target air pressure of a brake cylinder of a connected bogie axle according to the braking instruction, and control the brake cylinder to apply braking according to the target air pressure; The two-way check valve is arranged at the rear ends of the emergency brake device and the single-channel module, and is used to output the pressure on the side where the air pressure output by the emergency brake device and the single-channel module is larger.

[0041] Further, the brake air supply module includes: an air compressor for generating compressed air, a pipeline for transmitting compressed air and a four-circuit protection valve, wherein the air compressor is connected to the four-circuit protection valve through the pipeline; The four-circuit protection valve includes dividing the input compressed air into four circuits for output. When one of the circuits fails, it is ensured that the other circuits have a predetermined air pressure, and the four air outlets are independent of each other, and are respectively output to the common / emergency brake module, the foot brake valve, the parking brake module and the suspension system module. Each circuit has a preset opening pressure, so that when the system air pressure does not reach the preset condition, it cannot start, and any leakage in the four downstream pipelines is not associated with the other three pipelines, so that the train can perform related operations normally. It can be understood that the effect of improving the stability of the system can be achieved. At the same time, any leakage in the four downstream pipelines will not cause leakage in the other three pipelines, ensuring that the train can perform related operations normally.

[0042] Furthermore, the suspension system module is used to reduce vertical vibration when adjusting the height of the train; the suspension system module includes a pressure sensor, which is used to collect air spring pressure and feedback train weight information. It can be understood that a good pressure detection effect can be achieved.

[0043] Furthermore, the brake transmission module includes: a pipeline for transmitting compressed air and a flow amplification valve, wherein the flow amplification valve is used to input the pressure of the redundant output of the foot brake valves at both ends of the train as a pilot pressure and output it to the remote normal / emergency brake module to reduce the response time of the remote brake application.

[0044] Furthermore, it also includes: a fault detection module, which is electrically connected to the bicycle brake module, the brake air supply module, the suspension system module and the brake transmission module. It can be understood that by providing the fault detection module, the effect of real-time automatic detection can be achieved, so that the abnormal state can be obtained in time, thereby ensuring that the rubber wheel is in a normal operating state.

[0045] like Figure 3 As shown, the present application also relates to an air brake control method for a rubber-tyred train, which is applied to the air brake system of the rubber-tyred train as described above, and the control method comprises: When in normal working condition, the train network receives the braking command and braking level issued by the foot brake valve, and combines the vehicle weight information fed back by the empty spring pressure signal collected by the pressure sensor; The braking force required by the vehicle is calculated, and the normal / emergency brake module determines the target air pressure of the brake cylinder of the connected bogie axle according to the braking force, and controls the brake cylinder to apply braking according to the target air pressure.

[0046] Furthermore, it also includes: When the vehicle network fails, the normal / emergency brake module receives the brake command and brake level from the foot brake valve, and applies a preset air pressure to the brake cylinder to apply the brake; When both the analog and switch signals output by the foot brake valve are lost, the normal / emergency brake module outputs air pressure corresponding to the stroke of the foot brake valve to the brake cylinder to apply braking; When the foot brake valve is stepped to the maximum stroke, the mushroom button is pressed, or the emergency solenoid valve loses power, the normal / emergency brake module outputs compressed air not exceeding the preset pressure to the brake cylinder according to the digital signal to apply emergency braking.

[0047] Specifically, under normal operating conditions, the train network receives the braking command and braking level (analog signal) issued by the foot brake valve, and calculates the braking force required by the vehicle in combination with the vehicle weight information fed back by the air spring pressure signal collected by the pressure sensor. The common / emergency braking module determines the target air pressure of the brake cylinder of the connected bogie axle according to the braking force, and controls the brake cylinder to apply braking according to the target air pressure; under vehicle network failure conditions, the common / emergency braking module receives the braking command and braking level (digital signal) issued by the foot brake valve, and applies a fixed amount of air pressure to the brake cylinder to apply braking; when both the analog and switch signals output by the foot brake valve are lost, the common / emergency braking module outputs the air pressure corresponding to the foot brake valve stroke to the brake cylinder to apply braking; when the foot brake valve is stepped on to the maximum stroke, the mushroom button is pressed, or the emergency solenoid valve loses power, the common / emergency braking module outputs compressed air not exceeding a specific pressure to the brake cylinder according to the digital signal to apply emergency braking.

[0048] Furthermore, a first pressure sensor for collecting air spring pressure is provided in the suspension system module; Among them, when the detection pressure exceeds the normal range, the train network will set the vehicle load to the default value, and the train network will calculate the braking force corresponding to the current braking level based on the default value.

[0049] Furthermore, the normal / emergency brake module is provided with a second pressure sensor for collecting the normal brake cylinder pressure; Among them, when the common brake cylinder pressure is lower than the preset value and exceeds the threshold time, it is judged that the vehicle has insufficient braking force and no processing is required during the operation of the vehicle; On the contrary, when the pressure of the common brake cylinder is higher than the preset value and exceeds the threshold time, it is judged that the vehicle's braking is not relieved, and the common / emergency brake is isolated by operating the isolation plug door of the shaft where the common brake cylinder is located to the isolation position.

[0050] Specifically, the second pressure sensor collects the common brake cylinder pressure data in real time and sends the data to the air brake system.

[0051] The air brake system determines whether the braking force meets the current operating requirements based on the common brake cylinder pressure, and instructs the brake module to perform corresponding actions.

[0052] When the common brake cylinder pressure is lower than the preset value and lasts longer than the set threshold time, the system determines that the vehicle has insufficient braking force.

[0053] Processing method: Since it will not affect the safe operation of the vehicle, the system does not need to process it. It only records the fault information and prompts subsequent maintenance.

[0054] When the common brake cylinder pressure is higher than the preset value and lasts longer than the set threshold time, the system determines that the vehicle has a braking failure problem.

[0055] Solution: Operate the isolation plug door on the axis where the common brake cylinder is located, switch it to the isolation position, and isolate the faulty brake cylinder.

[0056] Braking control is then switched to the emergency brake module, ensuring the vehicle can continue to operate safely.

[0057] Furthermore, a third pressure sensor for collecting parking brake cylinder pressure is provided in the parking brake module; When the parking brake cylinder pressure is lower than a preset value, the isolation plug valve upstream of the parking brake cylinder is operated to the isolation position to isolate the parking brake; On the contrary, when the parking brake cylinder pressure is higher than the preset value and exceeds the threshold time, no processing is required.

[0058] Furthermore, a fourth pressure sensor for collecting air pressure in the brake transmission pipeline is provided in the brake transmission module; Among them, when the air pressure in the brake transmission pipeline is lower than the preset value, the vehicle will limit the speed according to the current air pressure to make the normal / emergency braking use air.

[0059] Specifically, the suspension system is provided with a pressure sensor for collecting air spring pressure. When the pressure exceeds the normal range, the train network will set the vehicle load to a default value, and the train network will calculate the braking force according to the default value corresponding to the current braking level; if the suspension system leaks, the isolation plug door can be operated to the isolation position to prevent further consumption of compressed air.

[0060] The common / emergency brake module is provided with a pressure sensor for collecting the common brake cylinder pressure. When the common brake cylinder pressure is lower than a specific value for more than a specific time, the vehicle is judged to have insufficient braking force, and no processing is required during the operation of the vehicle. After the vehicle returns to the warehouse, the brake pipeline is checked for leaks. If there is no leakage, check whether the single-channel module in the common / emergency brake module is faulty. If it is still normal, finally check whether the common brake cylinder is stuck; when the common brake cylinder pressure is higher than a specific value for more than a specific time, the vehicle is judged to have no braking relief, and the isolation plug door of the shaft where the common brake cylinder is located must be operated to the isolation position to isolate the common / emergency brake. After returning to the warehouse, check whether the single-channel module in the common / emergency brake module is faulty. If it is still normal, finally check whether the common brake cylinder is stuck.

[0061] The parking brake module is provided with a pressure sensor for collecting the parking brake cylinder pressure. When the parking brake cylinder pressure is lower than a specific value, the isolation plug valve upstream of the parking brake cylinder must be operated to the isolation position to isolate the parking brake and check whether the double pulse solenoid valve and the parking brake cylinder are faulty; when the parking brake cylinder pressure is higher than a specific value for more than a specific time, no processing is required.

[0062] The brake transmission is equipped with a pressure sensor to collect the air pressure of the brake transmission pipeline. When the air pressure of the brake transmission pipeline is lower than a certain value, the vehicle will limit the speed according to the current air pressure to ensure the subsequent normal / emergency braking air. After returning to the warehouse, check whether there is a leak in the transmission pipeline. If there is no abnormality, check whether the air compressor is faulty and cannot be started.

[0063] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. The air brake system of the rubber-tyred train is characterized by: include: A first user control module, a bicycle brake module, a brake air supply module, a suspension system module, and a brake transfer module, wherein the first user control module is electrically connected to the bicycle brake module, the brake air supply module, the suspension system module, and the brake transfer module respectively; The control instructions are sent out through the first user control module to respectively control the actions of the single vehicle brake module, the brake air supply module, the suspension system module and the brake transmission module, so that the rubber-wheeled train performs corresponding braking actions according to the instructions.

2. The air brake system for rubber-tyred train according to claim 1, characterized in that: The first user control module includes: a foot brake valve and a mushroom button, wherein the foot brake valve converts the collected pedal stroke into an analog signal and a switch signal and sends them to the rubber-wheeled train, and the brake level changes proportionally with the brake pedal stepping stroke, so as to achieve follow-up control during the braking and release process of the train; The mushroom button is used to output a digital signal to the rubber-wheeled train when pressed to apply emergency braking.

3. The air brake system for rubber-tyred train according to claim 2, characterized in that: The foot brake valve includes: two analog signals, one for outputting a digital signal for normal braking control and one for outputting a digital signal for emergency braking control; The foot brake valve output and stroke size correspond to the compressed air to serve as redundant control for purely mechanical braking when the digital signal is lost.

4. The air brake system for rubber-tyred train according to claim 1, characterized in that: The bicycle brake module includes: a common / emergency brake module and a parking brake module. The common / emergency brake module includes: a brake isolation valve for isolating the brake air source when the brake does not relieve the fault, a test connector, an emergency brake device, a single channel module and a two-way check valve. The test connector is used to detect the status of the pressure sensor or other components through an external pressure gauge when a fault or maintenance occurs; The emergency brake device includes: a pressure limiting valve and an emergency solenoid valve, which are used to output air not exceeding a preset pressure to the brake cylinder to apply emergency braking when the emergency brake triggering condition is triggered; The single-channel module is used to obtain a braking instruction of the rubber-tyred train, determine a target air pressure of a brake cylinder of a connected bogie axle according to the braking instruction, and control the brake cylinder to apply braking according to the target air pressure; The two-way check valve is arranged at the rear ends of the emergency brake device and the single-channel module, and is used to output the pressure on the side where the air pressure output by the emergency brake device and the single-channel module is larger.

5. The air brake system for rubber-tyred train according to claim 1, characterized in that: The brake air supply module includes: an air compressor for generating compressed air, a pipeline for transmitting compressed air and a four-circuit protection valve, wherein the air compressor is connected to the four-circuit protection valve through the pipeline; The four-circuit protection valve includes dividing the input compressed air into four circuit outputs. When one of the circuits fails, it ensures that the predetermined air pressure is in the other circuits, and the four air outlets are independent of each other, and are respectively output to the normal / emergency brake module, the foot brake valve, the parking brake module and the suspension system module. Each circuit has a preset opening pressure so that when the system air pressure does not reach the preset condition, the train cannot start, and any leakage in the four downstream pipelines is not related to the other three pipelines, so that the train can perform related operations normally.

6. The air brake system for rubber-tyred train according to claim 1, characterized in that: The suspension system module is used to reduce vertical vibration when adjusting the height of the train; the suspension system module includes: a pressure sensor, and the pressure sensor is used to collect air spring pressure and feedback train weight information.

7. The air brake system for rubber-tyred train according to claim 6, characterized in that: The brake transfer module includes: a pipeline for transmitting compressed air and a flow amplification valve. The flow amplification valve is used to input the pressure of the redundant output of the foot brake valves at both ends of the train as a pilot pressure and output it to the remote common / emergency brake module to reduce the response time of the remote brake application.

8. The air brake system for rubber-tyred train according to claim 1, characterized in that: Also includes: A fault detection module is electrically connected to the single-vehicle brake module, the brake air supply module, the suspension system module and the brake transmission module respectively.

9. The air brake control method for rubber-wheeled trains is characterized by: The air brake system applied to a rubber-tyred train according to any one of claims 1 to 8, wherein the control method comprises: When in normal working condition, the train network receives the braking command and braking level issued by the foot brake valve, and combines the vehicle weight information fed back by the empty spring pressure signal collected by the pressure sensor; The braking force required by the vehicle is calculated, and the normal / emergency brake module determines the target air pressure of the brake cylinder of the connected bogie axle according to the braking force, and controls the brake cylinder to apply braking according to the target air pressure.

10. The air brake control method for rubber-tyred train according to claim 9, characterized in that: Also includes: When the vehicle network fails, the normal / emergency brake module receives the brake command and brake level from the foot brake valve, and applies a preset air pressure to the brake cylinder to apply the brake; When both the analog and switch signals output by the foot brake valve are lost, the normal / emergency brake module outputs air pressure corresponding to the stroke of the foot brake valve to the brake cylinder to apply braking; When the foot brake valve is stepped to the maximum stroke, the mushroom button is pressed, or the emergency solenoid valve loses power, the normal / emergency brake module outputs compressed air not exceeding the preset pressure to the brake cylinder according to the digital signal to apply emergency braking.

11. The air brake control method for a rubber-tyred train according to claim 9, characterized in that: The suspension system module is provided with a first pressure sensor for collecting air spring pressure; Among them, when the detection pressure exceeds the normal range, the train network will set the vehicle load to the default value, and the train network will calculate the braking force corresponding to the current braking level based on the default value.

12. The air brake control method for rubber-tyred train according to claim 9, characterized in that: The normal / emergency brake module is provided with a second pressure sensor for collecting the normal brake cylinder pressure; Among them, when the common brake cylinder pressure is lower than the preset value and exceeds the threshold time, it is judged that the vehicle has insufficient braking force and no processing is required during the operation of the vehicle; On the contrary, when the pressure of the common brake cylinder is higher than the preset value and exceeds the threshold time, it is judged that the vehicle's braking is not relieved, and the common / emergency brake is isolated by operating the isolation plug door of the shaft where the common brake cylinder is located to the isolation position.

13. The air brake control method for rubber-tyred train according to claim 9, characterized in that: A third pressure sensor for collecting parking brake cylinder pressure is provided in the parking brake module; When the parking brake cylinder pressure is lower than a preset value, the isolation plug valve upstream of the parking brake cylinder is operated to the isolation position to isolate the parking brake; On the contrary, when the parking brake cylinder pressure is higher than the preset value and exceeds the threshold time, no processing is required.

14. The air brake control method for a rubber-tyred train according to claim 9, characterized in that: The brake transfer module is provided with a fourth pressure sensor for collecting the air pressure of the brake transfer pipeline; Among them, when the air pressure in the brake transmission pipeline is lower than the preset value, the vehicle will limit the speed according to the current air pressure to make the normal / emergency braking use air.

Images