CN112061170A - Railway vehicle parking brake system and application method thereof - Google Patents
Railway vehicle parking brake system and application method thereof Download PDFInfo
- Publication number
- CN112061170A CN112061170A CN202011032526.XA CN202011032526A CN112061170A CN 112061170 A CN112061170 A CN 112061170A CN 202011032526 A CN202011032526 A CN 202011032526A CN 112061170 A CN112061170 A CN 112061170A
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- CN
- China
- Prior art keywords
- shuttle valve
- pipeline
- electromagnetic valve
- valve
- way electromagnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B61H11/10—Aerodynamic brakes with control flaps, e.g. spoilers, attached to the vehicles
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a railway vehicle parking brake system and a using method thereof, wherein the railway vehicle parking brake system comprises a shuttle valve connected with a brake cylinder pipe, a two-position three-way electromagnetic valve is connected between the brake cylinder pipe and the shuttle valve in series, and a passage between the shuttle valve and the two-position three-way electromagnetic valve is connected with a pressure sensor; when the vehicle is in a driving state, the invention avoids the leakage of compressed air of the parking brake pipeline caused by the fault of the shuttle valve, avoids the brake of the brake cylinder pressure in an artificial state caused by the communication of the compressed air of the main air pipeline and the compressed air of the brake cylinder pipeline caused by the fault of the shuttle valve, and effectively increases the safety of the railway vehicle parking brake system.
Description
Technical Field
The invention belongs to the technical field of railway vehicle manufacturing, and particularly relates to a railway vehicle parking brake system and a using method thereof.
Background
In the process of braking of railway vehicles, the superposition of service braking and parking braking can cause overlarge braking force of the vehicles and damage to braking devices or related parts, and currently, most of railway vehicles are provided with shuttle valves for comparing the total wind pressure and the brake cylinder pressure in parking braking systems. However, the existing shuttle valve is easy to generate the phenomena of air leakage and air leakage, so that the pressure of a brake cylinder is abnormally increased, the non-artificial service brake is generated, and the driving safety is influenced. In light of the above-identified problems, there is a need for a railway vehicle parking brake system and method of using the same to address the above-identified problems.
Disclosure of Invention
The invention aims to solve the technical problems and provides a railway vehicle parking brake system and a use method thereof, which have simple and reasonable structural design and convenient use, can avoid the leakage of compressed air of a parking brake pipeline caused by the fault of a shuttle valve when a vehicle is in a running state, can also prevent the brake cylinder pressure from being braked in a non-artificial state caused by the communication of the compressed air of a main air pipeline and the compressed air of a brake cylinder pipeline caused by the fault of the shuttle valve, and is favorable for ensuring the safety of the vehicle in the running state.
The technical scheme adopted by the invention is as follows: a railway vehicle parking brake system comprises a shuttle valve connected with a brake cylinder pipe, a two-position three-way electromagnetic valve is connected between the brake cylinder pipe and the shuttle valve in series, and a pressure sensor is connected on a passage between the shuttle valve and the two-position three-way electromagnetic valve; the air outlet end of the shuttle valve is connected with a parking pipe through a pipeline, a cut-off cock is installed on the pipeline between the parking pipe and the shuttle valve, and the cut-off cock is connected with a parking pipe pressure switch through a pipeline.
And the air inlet end of the shuttle valve is connected with a main air pipe.
A parking electromagnetic valve is connected in series on a passage between the shuttle valve and the main air pipe, and a pressure switch is installed on a pipeline between the parking electromagnetic valve and the shuttle valve.
The two-position three-way electromagnetic valve is a normally open electric control valve.
The application method of the railway vehicle parking brake system comprises the following steps: the pressure sensor and the two-position three-way electromagnetic valve form logic association, and when the two-position three-way electromagnetic valve is powered off, the pressure sensor is powered off and does not work; when the two-position three-way electromagnetic valve is electrified, the pressure sensor is electrified to play a role, when the interior of the shuttle valve leaks, the total wind passes through the shuttle valve, the pressure sensor after being electrified can monitor air leakage, the pressure sensor obtains a pressure signal, the pressure signal is converted into an electric signal to be transmitted to a display screen of a cab, a driver can quickly obtain a fault signal, and the fault can be conveniently and timely processed.
A two-position three-way electromagnetic valve is connected in series between the brake cylinder pipe and the shuttle valve; the purpose of this is: the two-position three-way electromagnetic valve can automatically control the on-off of a brake cylinder pipeline entering a parking brake system, and the on-off of a circuit in the two-position three-way electromagnetic valve is realized by matching with a pressure switch, so that the aim of effective control is fulfilled.
A pressure sensor is connected to a passage between the shuttle valve and the two-position three-way electromagnetic valve; the purpose of this is: the pressure sensor can monitor whether the shuttle valve has an internal air leakage phenomenon during working, so that the safety of the railway vehicle parking brake system is effectively improved.
The air outlet end of the shuttle valve is connected with a parking pipe through a pipeline, a cut-off cock is arranged on the pipeline between the parking pipe and the shuttle valve, and the cut-off cock is connected with a parking pipe pressure switch through a pipeline; the purpose of this is: the cut-off cock is used for closing the brake pipe, cutting off the passage of the main wind direction for charging the brake pipe, and the parking pipe pressure switch is used for controlling the cut-off cock, so that the effect of rapid control is achieved.
The invention has the beneficial effects that:
1. when the vehicle is in a running state, the invention avoids the leakage of compressed air of a parking brake pipeline caused by the failure of the shuttle valve;
2. when the vehicle is in a running state, the brake of the pressure of the brake cylinder in a non-artificial state caused by the communication of the compressed air of the main air pipeline and the compressed air of the brake cylinder pipeline due to the fault of the shuttle valve is avoided, and the safety of the railway vehicle parking brake system is effectively improved.
Drawings
Fig. 1 is a working principle diagram of the present invention.
The labels in the figure are: 1. parking the electromagnetic valve; 2. a pressure switch; 3. a shuttle valve; 4. stopping and releasing the pipe; 5. the cock is cut off; 6. a parking tube pressure switch; 7. a brake cylinder tube; 8. a two-position three-way electromagnetic valve; 9. a pressure sensor;
101. a main air duct; 102. a second pipeline; 103. a third pipeline; 104. a fourth pipeline; 105. a fifth pipeline; 106. a sixth pipeline; 107. a seventh pipeline; 108. a eighth pipeline; 109. a ninth pipeline; 110. and a pipeline ten.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings.
As shown in the figure, the railway vehicle parking brake system comprises a shuttle valve 3 connected with a brake cylinder pipe 7, a two-position three-way electromagnetic valve 8 is connected between the brake cylinder pipe 7 and the shuttle valve 3 in series, an air inlet of the two-position three-way electromagnetic valve 8 is connected with the brake cylinder pipe 7, an air outlet of the two-position three-way electromagnetic valve 8 is connected to one end of an air inlet of the shuttle valve 3 through a pipeline six 106, a passage between the shuttle valve 3 and the two-position three-way electromagnetic valve 8 is connected with a pressure sensor 9, the pressure sensor 9 is communicated with a pipeline six 106 and a pipeline four 104 through a pipeline five 105, and the other end of the air inlet of the shuttle valve 3 is connected; the air outlet end of the shuttle valve 3 is connected with a parking pipe 4 through a pipeline, a cut-off cock 5 is installed on the pipeline between the parking pipe 4 and the shuttle valve 3, and the cut-off cock 5 is connected with a parking pipe pressure switch 6 through a pipeline.
And the air inlet end of the shuttle valve 3 is connected with a main air pipe 101.
A parking electromagnetic valve 1 is connected in series on a passage between the shuttle valve 3 and the main air pipe 101, and a pressure switch 2 is installed on a pipeline between the parking electromagnetic valve 1 and the shuttle valve 3.
The two-position three-way electromagnetic valve 8 is a normally open electric control valve.
The application method of the railway vehicle parking brake system comprises the following steps: the two-position three-way electromagnetic valve 8 is a normally open electric control valve, namely, a passage is formed between the pipeline six 106 and the pipeline seven 107 through the two-position three-way electromagnetic valve 8 in a power-off state. The pressure of the pressure switch 2 is set to 500 kPa. The pressure switch 2 controls the power-on and power-off of the two-position three-way electromagnetic valve 8. When the pressure of the compressed air at the pressure switch 2 is less than 500 kPa, the two-position three-way electromagnetic valve 8 is in a power-off state, and the two-position three-way electromagnetic valve 8 is in a passage and is communicated with an air passage between a seventh pipeline 107, a sixth pipeline 106, a fourth pipeline 104 and the shuttle valve 3; when the pressure of the compressed air at the pressure switch 2 is greater than or equal to 500 kPa, the two-position three-way electromagnetic valve 8 is in an energized state, at this time, the two-position three-way electromagnetic valve 8 is in a closed circuit, a passage between the brake cylinder pipeline seven 107 and the pipeline six 106 is closed, meanwhile, the pipeline six 106 is communicated with the atmosphere through the two-position three-way electromagnetic valve 8, if leakage exists inside the shuttle valve 3 at this time, air flowing to the parking pipe 4 through the shuttle valve 3 in the total air also leaks into the pipeline four 104, and the air flows into the atmosphere through the pipeline four 104, the pipeline six 106 and the two-position three-way electromagnetic valve 8, so that the pressure in the parking pipe 4 is indirectly reduced, and parking brake is. And when the leakage amount causes that the pressure of the compressed air at the pressure switch 2 is less than or equal to 500 kPa, the two-position three-way electromagnetic valve 8 is powered off, the two-position three-way electromagnetic valve 8 is in a passage at the moment and is communicated with an air passage between a brake pipe seven 107 and a pipe six 106, so that the total wind flows into the brake pipe seven 107 and further flows into the brake cylinder of the vehicle, and abnormal service braking of the vehicle is caused.
A logical association is formed between the pressure sensor 9 and the two-position three-way electromagnetic valve 8, and when the two-position three-way electromagnetic valve 8 is powered off, the pressure sensor 9 is powered off and does not work; when the two-position three-way electromagnetic valve 8 is electrified, the pressure sensor 9 is electrified to play a role, when leakage occurs inside the shuttle valve 3, the total wind passes through the shuttle valve 3, the pressure sensor 9 after being electrified can monitor air leakage, the pressure sensor 9 obtains a pressure signal, the pressure signal is converted into an electric signal to be transmitted to a display screen of a cab, a driver can quickly obtain a fault signal, and the fault can be conveniently and timely processed.
Claims (5)
1. A railway vehicle parking brake system, characterized by: the brake system comprises a shuttle valve connected with a brake cylinder pipe, a two-position three-way electromagnetic valve is connected between the brake cylinder pipe and the shuttle valve in series, and a passage between the shuttle valve and the two-position three-way electromagnetic valve is connected with a pressure sensor; the air outlet end of the shuttle valve is connected with a parking pipe through a pipeline, a cut-off cock is installed on the pipeline between the parking pipe and the shuttle valve, and the cut-off cock is connected with a parking pipe pressure switch through a pipeline.
2. A railway vehicle parking brake system as claimed in claim 1, wherein: the air inlet end of the shuttle valve is connected with a main air pipe.
3. A railway vehicle parking brake system as claimed in claim 2, wherein: a parking electromagnetic valve is connected in series on a passage between the shuttle valve and the main air pipe, and a pressure switch is arranged on a pipeline between the parking electromagnetic valve and the shuttle valve.
4. A railway vehicle parking brake system as claimed in claim 1, wherein: the two-position three-way electromagnetic valve is a normally open electric control valve.
5. A method of using a railway vehicle parking brake system as claimed in claim 1, wherein: the pressure sensor and the two-position three-way electromagnetic valve form logic association, and when the two-position three-way electromagnetic valve is powered off, the pressure sensor is powered off and does not work; when the two-position three-way electromagnetic valve is electrified, the pressure sensor is electrified to play a role, when the interior of the shuttle valve leaks, the total wind passes through the shuttle valve, the pressure sensor after being electrified can monitor air leakage, the pressure sensor obtains a pressure signal, the pressure signal is converted into an electric signal to be transmitted to a display screen of a cab, a driver can quickly obtain a fault signal, and the fault can be conveniently and timely processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011032526.XA CN112061170A (en) | 2020-09-27 | 2020-09-27 | Railway vehicle parking brake system and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011032526.XA CN112061170A (en) | 2020-09-27 | 2020-09-27 | Railway vehicle parking brake system and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112061170A true CN112061170A (en) | 2020-12-11 |
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ID=73682844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011032526.XA Pending CN112061170A (en) | 2020-09-27 | 2020-09-27 | Railway vehicle parking brake system and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112061170A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112441059A (en) * | 2020-12-18 | 2021-03-05 | 中车洛阳机车有限公司 | Railway vehicle parking braking system without total wind source and application method thereof |
-
2020
- 2020-09-27 CN CN202011032526.XA patent/CN112061170A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112441059A (en) * | 2020-12-18 | 2021-03-05 | 中车洛阳机车有限公司 | Railway vehicle parking braking system without total wind source and application method thereof |
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