CN113602247A - Electronic brake control valve for railway wagon and control method - Google Patents
Electronic brake control valve for railway wagon and control method Download PDFInfo
- Publication number
- CN113602247A CN113602247A CN202110928629.2A CN202110928629A CN113602247A CN 113602247 A CN113602247 A CN 113602247A CN 202110928629 A CN202110928629 A CN 202110928629A CN 113602247 A CN113602247 A CN 113602247A
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- Prior art keywords
- electromagnetic valve
- pressure
- valve
- brake cylinder
- train pipe
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Classifications
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- 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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/021—Railway control or brake valves
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- 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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/025—Electrically controlled valves
- B60T15/027—Electrically controlled valves in pneumatic systems
-
- 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)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses an electronic brake control valve of a railway wagon and a control method, wherein the control valve comprises an electric control main board, a first electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve which are communicated with a train pipe are arranged on the electric control main board, and a second electromagnetic valve and a third electromagnetic valve are also arranged on the electric control main board; the first electromagnetic valve is communicated with the auxiliary reservoir, the fifth electromagnetic valve is communicated with the outside atmosphere, the fourth electromagnetic valve is communicated with the brake cylinder, and the brake cylinder is communicated with the outside atmosphere through the third electromagnetic valve; the auxiliary reservoir is communicated with the brake cylinder through a second electromagnetic valve; and the auxiliary reservoir and the brake cylinder are both provided with pressure monitoring equipment which is controlled and connected by an electric control main board. The invention simplifies the mechanical structure of the control valve, ensures the connection tightness between components and reduces the occurrence of faults.
Description
Technical Field
The invention belongs to the technical field of train control, and particularly relates to an electronic brake control valve of a railway wagon and a control method.
Background
The railway wagon brake system is an important component of a railway wagon vehicle, and the running performance and safety of a train are directly affected by the braking of the train.
Along with the running of the railway heavy-duty freight car in China, higher requirements are put forward on a brake system. The 120-type air control valve commonly used at present has the problems of complex structure, slow response, incapability of stage relief, longitudinal impulse caused by slow wave speed and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the electronic brake control valve and the control method for the rail wagon, so that the mechanical structure of the control valve is simplified, the connection tightness among components is ensured, and the occurrence of faults is reduced.
The purpose of the invention is realized by the following technical scheme:
a rail wagon electronic brake control valve comprises an electric control main board, wherein a first electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve which are communicated with a train pipe are arranged on the electric control main board, and a second electromagnetic valve and a third electromagnetic valve are also arranged on the electric control main board;
the first electromagnetic valve is communicated with the auxiliary reservoir, the fifth electromagnetic valve is communicated with the outside atmosphere, the fourth electromagnetic valve is communicated with the brake cylinder, and the brake cylinder is communicated with the outside atmosphere through the third electromagnetic valve;
the auxiliary reservoir is communicated with the brake cylinder through a second electromagnetic valve;
and the auxiliary reservoir and the brake cylinder are both provided with pressure monitoring equipment which is controlled and connected by an electric control main board.
Furthermore, the train pipe is provided with a pressure monitoring device which is controlled and connected by an electric control main board.
Further, the first electromagnetic valve is closed when power is supplied, and is opened when power is lost; and the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are powered on and opened, and are powered off and closed.
On the other hand, the invention also provides a railway wagon electronic brake control method, which adopts any one of the railway wagon electronic brake control valves and comprises the following steps:
the electric control main board detects the pressure of the train pipe;
when the pressure of the train pipe rises and the pressure of the train pipe is greater than the pressure of the auxiliary reservoir, performing air charging relief;
when the pressure of the train pipe is reduced and the reduction rate is lower than the preset rate, executing service braking;
when the pressure of the train pipe is reduced and the reduction rate is higher than the preset rate, emergency braking is executed;
and when the pressure of the train pipe is greater than the preset pressure and the pressure change rate does not exceed the preset value, maintaining the pressure.
Further, the aeration mitigation comprises:
and the third electromagnetic valve is opened to communicate the brake cylinder with the outside atmosphere until the wind pressure is reduced to be lower than a preset value, and other electromagnetic valves are closed.
Further, the third electromagnetic valve is electrified for a preset time and then is de-electrified.
Further, the service brake comprises:
and the second electromagnetic valve and the fourth electromagnetic valve are opened intermittently until the brake cylinder pressure reaches a preset value.
Further, the emergency braking includes:
the second electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are opened, and the first electromagnetic valve is closed;
and after the air pressure in the auxiliary reservoir is the same as that in the brake cylinder, the second electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are closed, and the first electromagnetic valve is opened.
Further, during emergency braking, if the pressure of the train pipe is smaller than the preset value of the pressure of the brake cylinder, the fourth electromagnetic valve is closed.
Further, the maintaining pressure comprises:
all the electromagnetic valves are closed, and the pressure of the brake cylinder is kept unchanged.
The invention has the beneficial effects that:
(1) the invention controls the on-off of the air path through the electromagnetic valve group, realizes the pressure control of the brake cylinder of the vehicle and simplifies the mechanical structure of the control valve.
(2) The invention collects the pressure data of each piping system through the electric control main board, realizes the power-on and power-off control of the electromagnetic valve group according to the pressure of each piping system, and further controls each actuating mechanism.
(3) All the components of the invention can be connected on the integrated board by using the sealing rings and the bolts, thereby ensuring the connection tightness among the components and reducing the occurrence of faults.
Drawings
Fig. 1 is a schematic view of a railway wagon electronic brake control valve provided in embodiment 1 of the present invention;
fig. 2 is a flow chart of a method for controlling an electric brake of a railway wagon according to embodiment 2 of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Fig. 1 is a schematic diagram of the electronic brake control valve for a railway wagon according to the present embodiment, and all components may be connected to an integrated board by using a sealing ring and bolts. The electronic brake control valve for the railway freight car specifically comprises an electric control main board, wherein a power supply is also configured on the electric control main board, a first electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve which are communicated with a train pipe are arranged on the electric control main board, and a second electromagnetic valve and a third electromagnetic valve are also arranged on the electric control main board.
The first electromagnetic valve is communicated with the auxiliary air cylinder, the fifth electromagnetic valve is communicated with the outside atmosphere, the fourth electromagnetic valve is communicated with the brake cylinder, and the brake cylinder is communicated with the outside atmosphere through the third electromagnetic valve. The auxiliary reservoir is communicated with the brake cylinder through a second electromagnetic valve. And the train pipe, the auxiliary reservoir and the brake cylinder are respectively provided with a pressure sensor which is controlled and connected by an electric control main board and is used for acquiring pressure data of the train pipe, the auxiliary reservoir and the brake cylinder in real time.
Wherein, each solenoid valve in the figure is normally closed solenoid valve, its effect:
solenoid valve F1: and connecting the train pipe with the auxiliary reservoir, closing when power is on, and opening when power is off.
Solenoid valve F2: and connecting the auxiliary air cylinder with the brake cylinder, opening when power is on, and closing when power is off.
Solenoid valve F3: and connecting the brake cylinder with the atmosphere, opening when power is on, and closing when power is off.
Solenoid valve F4: and connecting the train pipe and the brake cylinder, opening when power is on, and closing when power is off.
Solenoid valve F5: and connecting the train pipe with the atmosphere, opening when power is on, and closing when power is off.
Based on the safe guide design, the electromagnetic valve can greatly prolong the service life and increase the failure rate when electrified for a long time. When the train operates, the gas circuit of the solenoid valve F1 needs to be in a normally open state, so the open/close condition of the solenoid valve F1 is closed when power is on and opened when power is off, and the gas circuit of the solenoid valve F2, the solenoid valve F3, the solenoid valve F4 and the solenoid valve F5 is in a normally closed state when the train operates, so the open/close condition is open when power is on and closed when power is off.
According to the electronic brake control valve for the railway wagon, the on-off of the air path is controlled through the electromagnetic valve bank, the pressure control of a brake cylinder of a vehicle is realized, and the mechanical structure of the control valve is simplified. All the components can be connected on the integrated board by using sealing rings and bolts, so that the connection tightness between the components is ensured, and the occurrence of faults is reduced.
Example 2
Fig. 2 is a flow chart of an electric brake control method for a railway wagon according to the present embodiment, which is a method for braking a railway train by using an electric brake control valve for a railway wagon according to the foregoing embodiment.
The method specifically comprises the following steps:
the pressure of the train pipe is detected through the electric control main board, and different operations are executed according to the pressure value and the pressure change of the train pipe.
And when the pressure of the train pipe rises and is greater than the pressure of the auxiliary reservoir, performing air charging relief. The method specifically comprises the following steps: when the electric control main board detects that the pressure of the train pipe rises and the pressure of the train pipe is greater than the pressure of the auxiliary reservoir. And the electromagnetic valve F3 is electrified, and a brake cylinder and atmosphere passage is opened until the wind pressure is reduced to be below 10 kPa. The power is lost after the operation lasts for 2 seconds, and the problems of sensor errors and complete exhaust of residual wind are solved.
When the air-charging relief is performed, solenoid valve F1, solenoid valve F2, solenoid valve F4, and solenoid valve F5 are all electrically disabled, solenoid valve 1 and solenoid valve F3 are open, and solenoid valve F2, solenoid valve F4, and solenoid valve F5 are in a closed state.
Service braking is performed when the train pipe pressure drops and the rate of drop is below a preset rate. The method specifically comprises the following steps: when the electric control main board detects that the descending rate of the train pipe pressure is low, namely the descending rate is 10-40 kPa/s, the electric control main board controls the electromagnetic valve F2 and the electromagnetic valve F4 to be intermittently electrified and opened according to the instruction until the brake cylinder pressure is the same as the calculated value. On one hand, the pressure of the auxiliary reservoir can be saved, local reduction is generated, and on the other hand, the brake wave speed is increased.
The calculated value is a brake cylinder pressure value which is calculated by a preset calculation program in an electric control main board and is matched with different train pipe pressures.
And when the pressure of the train pipe is reduced and the reduction rate is higher than the preset rate, emergency braking is executed. The method specifically comprises the following steps: when the electric control main board detects that the pressure reduction rate of the train pipe is high, namely the pressure reduction rate is larger than 70kPa/s, the electric control main board controls the electromagnetic valve F1, the electromagnetic valve F2, the electromagnetic valve F4 and the electromagnetic valve F5 to be powered on according to instructions until the air pressure in the auxiliary air cylinder is the same as that of the brake cylinder, and then the electromagnetic valve F1, the electromagnetic valve F2, the electromagnetic valve F4 and the electromagnetic valve F5 are powered off.
In addition, because the train pipe exhausts air to the brake cylinder and the atmosphere at the same time, the brake wave speed is increased, and emergency braking can be implemented. If the train pipe pressure is less than the brake cylinder pressure by a certain amount, for example, 10kPa, the solenoid valve F4 is closed to apply emergency braking.
And when the pressure of the train pipe is greater than the preset pressure and the pressure change rate does not exceed the preset value, maintaining the pressure. The method specifically comprises the following steps: when the electric control main board detects that the train pipe is in the pressure maintaining position, namely the pressure of the train pipe is greater than 400kPa, and the change rate does not exceed 1kPa/min, the electric control main board controls all the electromagnetic valves to be closed, the electromagnetic valve F1 to be electrified, and the electromagnetic valve F2, the electromagnetic valve F3, the electromagnetic valve F4 and the electromagnetic valve F5 to be deenergized. And the brake cylinder is in a pressure maintaining position.
According to the electronic brake control method for the railway wagon, the electronic control mainboard is used for collecting pressure data of each piping system, power-on and power-off control of the electromagnetic valve bank is achieved according to the pressure of each piping system, and then each actuating mechanism is controlled. Under different train pipe pressures and pressure changes, the air inflation relieving, the service braking, the emergency braking and the pressure maintaining of the train are realized through the electric control main board.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A rail wagon electronic brake control valve comprises an electric control main board, and is characterized in that a first electromagnetic valve, a fourth electromagnetic valve and a fifth electromagnetic valve which are communicated with a train pipe are arranged on the electric control main board, and a second electromagnetic valve and a third electromagnetic valve are also arranged on the electric control main board;
the first electromagnetic valve is communicated with the auxiliary reservoir, the fifth electromagnetic valve is communicated with the outside atmosphere, the fourth electromagnetic valve is communicated with the brake cylinder, and the brake cylinder is communicated with the outside atmosphere through the third electromagnetic valve;
the auxiliary reservoir is communicated with the brake cylinder through a second electromagnetic valve;
and the auxiliary reservoir and the brake cylinder are both provided with pressure monitoring equipment which is controlled and connected by an electric control main board.
2. The electric brake control valve for a railway wagon as claimed in claim 1, wherein the train pipe is provided with a pressure monitoring device which is connected by an electric control main board in a control manner.
3. The electronic brake control valve for a railway wagon of claim 1, wherein the first solenoid valve is closed by power and opened by power loss; and the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are powered on and opened, and are powered off and closed.
4. A railway wagon electronic brake control method using the railway wagon electronic brake control valve as claimed in any one of claims 1 to 3, comprising the steps of:
the electric control main board detects the pressure of the train pipe;
when the pressure of the train pipe rises and the pressure of the train pipe is greater than the pressure of the auxiliary reservoir, performing air charging relief;
when the pressure of the train pipe is reduced and the reduction rate is lower than the preset rate, executing service braking;
when the pressure of the train pipe is reduced and the reduction rate is higher than the preset rate, emergency braking is executed;
and when the pressure of the train pipe is greater than the preset pressure and the pressure change rate does not exceed the preset value, maintaining the pressure.
5. A method of controlling electric brakes of a railway wagon as claimed in claim 4, wherein the aeration relief comprises:
and the third electromagnetic valve is opened to communicate the brake cylinder with the outside atmosphere until the wind pressure is reduced to be lower than a preset value, and other electromagnetic valves are closed.
6. A control method of electric brakes of a railway wagon as claimed in claim 5, wherein the third solenoid valve is powered on for a preset time and then powered off.
7. A method of controlling electric brakes of a railway wagon as claimed in claim 4, wherein the service braking comprises:
and the second electromagnetic valve and the fourth electromagnetic valve are opened intermittently until the brake cylinder pressure reaches a preset value.
8. A method of controlling electric brakes of a railway wagon as claimed in claim 4, wherein the emergency braking comprises:
the second electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are opened, and the first electromagnetic valve is closed;
and after the air pressure in the auxiliary reservoir is the same as that in the brake cylinder, the second electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are closed, and the first electromagnetic valve is opened.
9. A method for controlling an electric brake of a railway wagon as claimed in claim 8, wherein the fourth solenoid valve is closed if the pressure of the train pipe is less than a preset value of the brake cylinder pressure during emergency braking.
10. A railway wagon electric brake control method as claimed in claim 4, wherein the pressure maintaining comprises:
all the electromagnetic valves are closed, and the pressure of the brake cylinder is kept unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110928629.2A CN113602247A (en) | 2021-08-13 | 2021-08-13 | Electronic brake control valve for railway wagon and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110928629.2A CN113602247A (en) | 2021-08-13 | 2021-08-13 | Electronic brake control valve for railway wagon and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113602247A true CN113602247A (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110928629.2A Pending CN113602247A (en) | 2021-08-13 | 2021-08-13 | Electronic brake control valve for railway wagon and control method |
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| Country | Link |
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| CN (1) | CN113602247A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179918A (en) * | 2022-07-12 | 2022-10-14 | 眉山中车制动科技股份有限公司 | Structure and method for accurately controlling air pressure of brake cylinder |
| CN115214583A (en) * | 2022-07-26 | 2022-10-21 | 眉山中车制动科技股份有限公司 | Control system of railway freight car electro-pneumatic brake valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6669308B1 (en) * | 1998-10-23 | 2003-12-30 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Brake system for railway vehicles |
| CN102145689A (en) * | 2011-02-14 | 2011-08-10 | 中国铁道科学研究院机车车辆研究所 | Detecting method and device for failure of automatic air brake system of train |
| CN102167021A (en) * | 2011-03-07 | 2011-08-31 | 中国铁道科学研究院机车车辆研究所 | Method and device for braking quick railway freight car |
| CN107161132A (en) * | 2017-06-02 | 2017-09-15 | 青岛思锐科技有限公司 | A kind of passenger train electro pneumatic braking system and alleviation method |
| CN107662622A (en) * | 2017-10-31 | 2018-02-06 | 眉山中车制动科技股份有限公司 | Road maintainance machinery materials vehicle brake |
| CN211592575U (en) * | 2020-02-10 | 2020-09-29 | 中国铁道科学研究院集团有限公司 | Distribution valve module of charging valve and standby air brake system of motor train unit |
-
2021
- 2021-08-13 CN CN202110928629.2A patent/CN113602247A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6669308B1 (en) * | 1998-10-23 | 2003-12-30 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Brake system for railway vehicles |
| CN102145689A (en) * | 2011-02-14 | 2011-08-10 | 中国铁道科学研究院机车车辆研究所 | Detecting method and device for failure of automatic air brake system of train |
| CN102167021A (en) * | 2011-03-07 | 2011-08-31 | 中国铁道科学研究院机车车辆研究所 | Method and device for braking quick railway freight car |
| CN107161132A (en) * | 2017-06-02 | 2017-09-15 | 青岛思锐科技有限公司 | A kind of passenger train electro pneumatic braking system and alleviation method |
| CN107662622A (en) * | 2017-10-31 | 2018-02-06 | 眉山中车制动科技股份有限公司 | Road maintainance machinery materials vehicle brake |
| CN211592575U (en) * | 2020-02-10 | 2020-09-29 | 中国铁道科学研究院集团有限公司 | Distribution valve module of charging valve and standby air brake system of motor train unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179918A (en) * | 2022-07-12 | 2022-10-14 | 眉山中车制动科技股份有限公司 | Structure and method for accurately controlling air pressure of brake cylinder |
| CN115179918B (en) * | 2022-07-12 | 2023-07-11 | 眉山中车制动科技股份有限公司 | Structure and method for precisely controlling air pressure of brake cylinder |
| CN115214583A (en) * | 2022-07-26 | 2022-10-21 | 眉山中车制动科技股份有限公司 | Control system of railway freight car electro-pneumatic brake valve |
| CN115214583B (en) * | 2022-07-26 | 2023-09-22 | 眉山中车制动科技股份有限公司 | Control system of electric air brake valve of railway wagon |
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Application publication date: 20211105 |