CN113306591A - Train air braking force compensation method and system and rail transit vehicle - Google Patents
Train air braking force compensation method and system and rail transit vehicle Download PDFInfo
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- CN113306591A CN113306591A CN202110769359.5A CN202110769359A CN113306591A CN 113306591 A CN113306591 A CN 113306591A CN 202110769359 A CN202110769359 A CN 202110769359A CN 113306591 A CN113306591 A CN 113306591A
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- brake control
- control device
- braking force
- train
- pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a train air braking force compensation method, a train air braking force compensation system and a rail transit vehicle.A certain brake control device is judged whether the pressure of the input side of the brake control device is lower than a target value or not, and if so, the brake control device is isolated; and/or judging whether the output side pressure of the brake control device is lower than a target value, if so, isolating the brake control device. The method judges whether the braking force can be normally output according to the input and/or output pressure of the brake control device, so as to supplement the braking force in the train range, but not compensate the braking force according to the fault state of the brake control device.
Description
Technical Field
The invention relates to the technical field of urban rail vehicle braking, in particular to a train air braking force compensation method and system and a rail transit vehicle.
Background
Present urban rail vehicle generally comprises by marshalling more, every vehicle all is equipped with air brake controlling means and air brake and applies the device, be responsible for corresponding braking force respectively, when taking place if leak or the condition such as the air feed is not enough causes the equal loss of single-point braking force not enough, do not compensate, perhaps only according to brake controlling means fault condition, corresponding arresting gear of excision, do not apply the braking, the braking force of its loss is supplemented at other vehicles, if other vehicles can't supply completely then lose corresponding braking force, under the special circumstances, can cause certain braking force loss, there is great adverse effect to accurate parking. When the corresponding brake device is removed according to the fault state of the brake control device, because some faults are difficult to detect or are misreported, the brake control device is not removed in time or removed by mistake easily, and the brake force compensation of the train is further influenced.
Disclosure of Invention
The invention aims to solve the technical problem that the prior art is insufficient, and provides a train air braking force compensation method, a train air braking force compensation system and a rail transit vehicle, so that train braking force loss is reduced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a train air brake force compensation method, comprising:
for a certain brake control device, judging whether the pressure of the input side of the brake control device is lower than a target value, if so, isolating the brake control device; and/or
And judging whether the output side pressure of the brake control device is lower than a target value, if so, isolating the brake control device.
The method disclosed by the invention judges whether the corresponding brake control device needs to be isolated or not by detecting the pressure at the input side and/or the output side of the brake control device, and compared with the mode of judging whether the brake control device needs to be cut off or not by a fault state in the prior art, the method disclosed by the invention is easy to realize, solves the problem that the brake control device is not cut off or the brake control device is cut off by mistake due to the fact that the fault is difficult to detect or is reported by mistake, and is further beneficial to reducing the accurate compensation of the train braking force and reducing the loss of the train braking force.
In order to further accurately compensate the train braking force and reduce the train braking force loss, when the input side pressure of the brake control device is lower than the target value, the following operations are carried out: judging whether the braking force of the rest brake control devices of the train is lower than the total braking force, if not, distributing the braking force by the rest brake control devices; otherwise, the braking force is distributed by all the brake control devices of the train.
In order to further accurately compensate the train braking force and reduce the train braking force loss, when the output side pressure of the brake control device is lower than a target value, the following operations are carried out: judging whether the braking force of the rest brake control devices of the train is lower than the total braking force, if not, distributing the braking force by the rest brake control devices; otherwise, the braking force is distributed by all the brake control devices of the train.
Since the brake pressure control itself has a certain deviation and if the pressure is low, the isolation may cause too frequent operation and even excessive malfunction, therefore, in the present invention, the brake control device is isolated when the difference between the input side pressure or the output side pressure of the brake control device and the target value is lower than the set value.
Correspondingly, the invention also provides a train air braking force compensation system, which comprises:
a plurality of brake control devices;
a plurality of pressure detection devices for detecting the input side pressure and/or the output side pressure of the corresponding brake control device;
the train brake control system is used for judging whether the input side pressure of the brake control device is lower than a target value or not, and if so, isolating the brake control device; and/or the controller is used for judging whether the output side pressure of the brake control device is lower than a target value or not, and if so, isolating the brake control device.
The train control system is also used for judging whether the braking force of the rest brake control devices of the train is lower than the total braking force when the pressure of the input side of one brake control device is lower than a target value and/or the pressure of the output side of the brake control device is lower than the target value, and if not, sending a braking force distribution instruction to the rest brake control devices; otherwise, sending a command for distributing the braking force to all the braking control devices of the train. The pressure detection device is arranged to detect the front end (input side) input pressure and the rear end (output side) brake cylinder pressure of each vehicle brake control device, the front end (input side) input pressure and the rear end (output side) brake cylinder pressure are compared with the corresponding target pressure, the actual meeting condition of the braking force is judged, then the train braking force compensation is carried out according to the state of the braking force, and the train braking force loss is reduced.
In order to more accurately detect the input side pressure and the output side pressure of the brake control device, the pressure detection device is arranged in a pipeline of the input side and the output side of each brake control device.
As an inventive concept, the invention also provides a rail transit vehicle, which comprises a plurality of carriages; each compartment is provided with at least one brake control device and at least one pressure detection device for detecting the pressure of the input side and/or the output side of the brake control device; the brake control devices and the pressure detection devices in all the carriages are electrically connected with a train brake control system, and the train brake control system isolates the corresponding brake control device when judging that the pressure of the input side and/or the pressure of the output side of a certain brake control device is lower than a target value.
Preferably, the train brake control isolates the brake control device when the difference between the brake control device input side pressure or output side pressure and the target value is below a set value.
The train brake control device is also used for judging whether the braking force of the rest brake control devices of the train is lower than the total braking force when the input side pressure of one brake control device is lower than a target value and/or the output side pressure of the brake control device is lower than the target value, and if not, sending a braking force distribution instruction to the rest brake control devices; otherwise, a command to distribute the braking force is sent to all the brake control devices.
The pressure in the present invention refers to the air pressure in the pipe communicating with the brake control device.
Compared with the prior art, the invention has the beneficial effects that: the method judges whether the braking force can be normally output according to the input and/or output pressure of the brake control device, so as to supplement the braking force in the train range, but not compensate the braking force according to the fault state of the brake control device.
Drawings
FIG. 1 is a brake compensation flowchart according to embodiment 1 of the present invention;
FIG. 2 is a brake compensation flowchart according to embodiment 2 of the present invention;
FIG. 3 is a flow chart of brake compensation according to embodiment 3 of the present invention;
FIG. 4 is a structural diagram of a brake compensation system according to embodiment 4 of the present invention;
FIG. 5 is a schematic diagram of pressure acquisition according to example 4 of the present invention;
fig. 6 is a diagram of a network communication structure according to embodiment 5 of the present invention.
Detailed Description
As shown in fig. 1, in embodiment 1 of the present invention, after the total braking force of a train is calculated, for any brake control device of the train, it is first determined whether the pressure at the front end (input side) of the brake control device is greater than a target value, if so, it indicates that all the brake control devices of the train are available, and all the brake control devices apply braking force to provide braking force for the train; otherwise, isolating (namely cutting) the brake control device with insufficient pressure at the front end to stop the brake control device, judging whether the rest brake control devices of the train can meet the requirement of the train brake force (namely judging whether the brake force of the rest brake control devices is not lower than the total brake force), if so, indicating that the rest brake control devices are available, applying the brake force by the rest brake control devices to provide the brake force for the train, and if not, applying the brake force by all the brake control devices to provide the brake force for the train.
On the basis, embodiment 1 of the present invention further determines whether the rear end (output side) pressure of the brake control device is greater than a target value, and if so, it indicates that all the brake control devices of the train are available, and all the brake control devices apply braking force to provide braking force for the train; otherwise, isolating (namely cutting off) the brake control device with insufficient pressure at the rear end to stop the brake control device, judging whether the rest brake control devices of the train can meet the requirement of the train brake force (namely judging whether the brake force of the rest brake control devices is not lower than the total brake force), if so, indicating that the rest brake control devices are available, applying the brake force by the rest brake control devices to provide the brake force for the train, and if not, applying the brake force by all the brake control devices to provide the brake force for the train.
As shown in fig. 2, an embodiment 2 of the present invention is different from embodiment 1 in that it only determines the front braking force of a brake control device, and first determines whether the front (input side) pressure of the brake control device is greater than a target value, if so, it indicates that all brake control devices of a train are available, and all brake control devices apply braking force to provide braking force for the train; otherwise, isolating (namely cutting) the brake control device with insufficient pressure at the front end to stop the brake control device, judging whether the rest brake control devices of the train can meet the requirement of the train brake force (namely judging whether the brake force of the rest brake control devices is not lower than the total brake force), if so, indicating that the rest brake control devices are available, applying the brake force by the rest brake control devices to provide the brake force for the train, and if not, applying the brake force by all the brake control devices to provide the brake force for the train.
As shown in fig. 3, an embodiment 3 of the present invention is different from embodiment 1 in that it only judges the rear end braking force of a brake control device, judges whether the rear end (output side) pressure of the brake control device is greater than a target value, if so, it indicates that all the brake control devices of a train are available, and all the brake control devices apply braking force to provide braking force for the train; otherwise, isolating (namely cutting off) the brake control device with insufficient pressure at the rear end to stop the brake control device, judging whether the rest brake control devices of the train can meet the requirement of the train brake force (namely judging whether the brake force of the rest brake control devices is not lower than the total brake force), if so, indicating that the rest brake control devices are available, applying the brake force by the rest brake control devices to provide the brake force for the train, and if not, applying the brake force by all the brake control devices to provide the brake force for the train.
As shown in fig. 4 and 5, in the brake compensating system according to embodiment 4 of the present invention, the train air brake force is calculated and distributed by the train brake control system, and the brake control system controls the brake control device to apply the brake force. The pressure detection device detects the front brake input pressure and the rear output brake cylinder pressure of the train brake control device, and corresponding pressure values are transmitted to the train brake control system. Judging whether the brake control device can apply enough brake according to the condition of the input pressure at the front end of the brake control device, if the pressure is lower than the set value (the set value is a target value, and may be set according to the vehicle load, the deceleration value, or the like, or may be simply set as a fixed value, for example, 600kPa, or may be calculated according to the load, for example, by setting a force F =1.2m × a corresponding to the target pressure, where m is the train load and a is the deceleration, and then calculating the required brake cylinder pressure back from the force F as the target value), it is considered to be an abnormal state, and the train brake control system isolates this brake control device, and the braking force is compensated by the remaining brake control devices (for example, 3 brake control devices each exert 10kn to satisfy the total braking force requirement, and after isolating 1 brake control device, the other two brake control devices each need to exert 15 kn) and the braking force is supplemented to the other control devices.
The output brake cylinder pressure is determined, and if the output brake pressure is lower than the target value and reaches a certain value (for example, 50kP, the output brake pressure may be designed according to the requirement, for example, lower than 20% of the target pressure), it is also considered as an abnormal state, and the train brake control system cuts off the brake control device, and the remaining brake control devices compensate the braking force.
Because the braking force compensation is limited by the braking force of the braking control device in the range of the whole train, when the whole train exceeds a certain braking control device and fails, if the braking force cannot meet the braking force of the corresponding train, the train braking control system releases the isolation state of the failed braking control device before, and in the range of the capacity, the insufficient braking force is supplemented again.
Each vehicle has at least one brake control device for the corresponding vehicle brake function. And pressure acquisition is carried out on the pressure input and the pressure output of each brake control device. The method of the system of embodiment 4 of the present invention in embodiment 1 is that firstly, the total braking force demand is calculated, then the braking force is distributed according to the actual input pressure state, and then the braking force is distributed again according to the pressure output state, in the two times of braking force compensation, whether the total braking force meets the demand needs to be judged, if not, the isolation state of the isolation braking device is removed, and the braking force is distributed on all the braking control devices, so as to meet the train demand as much as possible.
The pressure acquisition device can be an air pressure sensor and the like. One or two pressure sensors can be associated with each brake control device.
The system of embodiment 4 of the present invention can also implement the methods of embodiments 2 and 3.
Embodiment 5 of the present invention provides a rail transit vehicle, including a plurality of cars, each car being provided with at least one brake control device and at least one pressure detection device for detecting pressures on an input side and/or an output side of the brake control device; and the brake control devices and the pressure detection devices in all the carriages are electrically connected with a train brake control system. The train brake control system of embodiment 5 of the present invention can also implement the brake compensation methods of embodiments 1, 2, and 3.
The network structure of embodiment 5 of the present invention is as shown in fig. 6, and all the brake control devices and all the pressure acquisition devices are connected to a train communication network or an internal communication network of a train brake control system, which is convenient for data transmission.
Claims (10)
1. A train air braking force compensation method is characterized by comprising the following steps:
for a certain brake control device, judging whether the pressure of the input side of the brake control device is lower than a target value, if so, isolating the brake control device;
and/or
And judging whether the output side pressure of the brake control device is lower than a target value, if so, isolating the brake control device.
2. The train air brake force compensation method according to claim 1, characterized in that when the brake control device input side pressure is lower than a target value, the following operation is further performed: judging whether the braking force of the rest brake control devices of the train is lower than the total braking force, if not, distributing the braking force by the rest brake control devices; otherwise, the braking force is distributed by all the brake control devices of the train.
3. The train air brake force compensation method according to claim 1 or 2, characterized in that when the brake control device output side pressure is lower than a target value, the following operation is further performed: judging whether the braking force of the rest brake control devices of the train is lower than the total braking force, if not, distributing the braking force by the rest brake control devices; otherwise, the braking force is distributed by all the brake control devices of the train.
4. The train air brake force compensation method of claim 1, wherein the brake control device is isolated when a difference between the brake control device input side pressure or output side pressure and a target value is lower than a set value.
5. A train air brake force compensation system, comprising:
a plurality of brake control devices;
a plurality of pressure detection devices for detecting the input side pressure and/or the output side pressure of the corresponding brake control device;
the train brake control system is used for judging whether the input side pressure of the brake control device is lower than a target value or not, and if so, isolating the brake control device; and/or the controller is used for judging whether the output side pressure of the brake control device is lower than a target value or not, and if so, isolating the brake control device.
6. The train air braking force compensation system of claim 5, wherein the train control system is further configured to determine whether the braking force of the remaining brake control devices of the train is lower than the total braking force when the pressure on the input side of a certain brake control device is lower than a target value and/or the pressure on the output side of the brake control device is lower than a target value, and if not, send a command for distributing the braking force to the remaining brake control devices; otherwise, sending a command for distributing the braking force to all the braking control devices of the train.
7. The train air brake force compensation system of claim 5, wherein the pressure detection device is disposed in a pipeline on each of the input side and the output side of the brake control device.
8. The train air brake force compensation system according to any one of claims 5 to 7, wherein the brake control device is isolated when a difference between the input side pressure or the output side pressure of the brake control device and a target value is lower than a set value.
9. A rail transit vehicle comprises a plurality of carriages; the system is characterized in that each compartment is provided with at least one brake control device and at least one pressure detection device for detecting the pressure of the input side and/or the output side of the brake control device; the brake control devices and the pressure detection devices in all the carriages are electrically connected with a train brake control system, and the train brake control system isolates the corresponding brake control device when judging that the pressure at the input side and/or the pressure at the output side of a certain brake control device is lower than a target value; preferably, the train brake control isolates the brake control device when the difference between the brake control device input side pressure or output side pressure and the target value is below a set value.
10. The rail transit vehicle of claim 9, wherein the train brake control device is further configured to determine whether the braking force of the remaining brake control devices of the train is lower than the total braking force when the pressure on the input side of a certain brake control device is lower than a target value and/or the pressure on the output side of the brake control device is lower than a target value, and if not, send a command for distributing the braking force to the remaining brake control devices; otherwise, a command to distribute the braking force is sent to all the brake control devices.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110769359.5A CN113306591A (en) | 2021-07-07 | 2021-07-07 | Train air braking force compensation method and system and rail transit vehicle |
| PCT/CN2021/137168 WO2023279659A1 (en) | 2021-07-07 | 2021-12-10 | Train air braking force compensation method and system and rail transit vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110769359.5A CN113306591A (en) | 2021-07-07 | 2021-07-07 | Train air braking force compensation method and system and rail transit vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN113306591A true CN113306591A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110769359.5A Pending CN113306591A (en) | 2021-07-07 | 2021-07-07 | Train air braking force compensation method and system and rail transit vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113306591A (en) |
| WO (1) | WO2023279659A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023279659A1 (en) * | 2021-07-07 | 2023-01-12 | 中车株洲电力机车有限公司 | Train air braking force compensation method and system and rail transit vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963349A (en) * | 2012-12-11 | 2013-03-13 | 四川制动科技股份有限公司 | Air brake fault alarm device for railway vehicle |
| WO2015132232A1 (en) * | 2014-03-05 | 2015-09-11 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Method for controlling a breaking system of a rail vehicle |
| CN107512257A (en) * | 2017-09-07 | 2017-12-26 | 中车青岛四方车辆研究所有限公司 | Method for compensating braking force in the case of air damping failure |
| CN109649430A (en) * | 2019-01-25 | 2019-04-19 | 中车青岛四方机车车辆股份有限公司 | A kind of equipment, the method and system of train braking isolation |
| CN112193229A (en) * | 2020-10-19 | 2021-01-08 | 中车株洲电力机车有限公司 | Rail transit vehicle braking system and braking control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113306591A (en) * | 2021-07-07 | 2021-08-27 | 中车株洲电力机车有限公司 | Train air braking force compensation method and system and rail transit vehicle |
-
2021
- 2021-07-07 CN CN202110769359.5A patent/CN113306591A/en active Pending
- 2021-12-10 WO PCT/CN2021/137168 patent/WO2023279659A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963349A (en) * | 2012-12-11 | 2013-03-13 | 四川制动科技股份有限公司 | Air brake fault alarm device for railway vehicle |
| WO2015132232A1 (en) * | 2014-03-05 | 2015-09-11 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Method for controlling a breaking system of a rail vehicle |
| CN107512257A (en) * | 2017-09-07 | 2017-12-26 | 中车青岛四方车辆研究所有限公司 | Method for compensating braking force in the case of air damping failure |
| CN109649430A (en) * | 2019-01-25 | 2019-04-19 | 中车青岛四方机车车辆股份有限公司 | A kind of equipment, the method and system of train braking isolation |
| CN112193229A (en) * | 2020-10-19 | 2021-01-08 | 中车株洲电力机车有限公司 | Rail transit vehicle braking system and braking control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023279659A1 (en) * | 2021-07-07 | 2023-01-12 | 中车株洲电力机车有限公司 | Train air braking force compensation method and system and rail transit vehicle |
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| Publication number | Publication date |
|---|---|
| WO2023279659A1 (en) | 2023-01-12 |
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