CN106167010A - A kind of parking brake control unit with long-range mitigation capability - Google Patents
A kind of parking brake control unit with long-range mitigation capability Download PDFInfo
- Publication number
- CN106167010A CN106167010A CN201610570236.8A CN201610570236A CN106167010A CN 106167010 A CN106167010 A CN 106167010A CN 201610570236 A CN201610570236 A CN 201610570236A CN 106167010 A CN106167010 A CN 106167010A
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- Prior art keywords
- cock
- parking brake
- valve
- double check
- check valve
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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
- 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
- B60T13/24—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 the fluid being gaseous
- B60T13/26—Compressed-air 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
- 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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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
nullThis application discloses a kind of parking brake control unit with long-range mitigation capability，Including be located on pipeline for the first cock connected with air main、The second cock for brake pipe connection、For the 3rd cock being connected with average tube，Described parking brake unit also includes the impulse electromagnetic valve for being connected with Parking Brake Cylinders，The first described cock、Second cock is connected with described impulse electromagnetic valve respectively，Described parking brake unit also includes the first double check valve，The first described double check valve has the first end、Second end、3rd end，First end of described first double check valve is connected with described impulse electromagnetic valve，Second end of described first double check valve is communicated on the pipeline between described second cock and impulse electromagnetic valve，It is not turned between first end and second end of described first double check valve，First end of described first double check valve and the conducting of the 3rd end，Second end of described first double check valve and the conducting of the 3rd end.
Description
Technical field
The application relates to a kind of parking brake control unit with long-range mitigation capability.
Background technology
It is in without under fire loop back mode at locomotive, it usually needs other vehicles are dragged, and now need operator to exist
Trigger on control station and park alleviation and apply button control impulse electromagnetic valve and be in and park relieved state, if operator are behaviour by mistake
Make, do not guarantee the state of impulse electromagnetic valve, then the pressure that do not has in parking brake pipe inputs, it is impossible to ensures that it is alleviated, makes machine
Car can not be by safety without fire loopback.In the prior art, the another kind of situation generally occurred within is, electromagnetic impulse valve fault or electromagnetism
Pulse valve is in not power supply state, and operator cannot use the signal of telecommunication to control the state of electromagnetic impulse valve, thus locomotive can not
Carry out without fire loopback.
Summary of the invention
Technical problems to be solved in this application are to overcome the deficiencies in the prior art, it is provided that one does not relies on pulse electromagnetic
The parking brake unit of valve controlling unit.
For solving above technical problem, the application adopts the following technical scheme that:
A kind of parking brake control unit with long-range mitigation capability, described parking brake unit includes being located at pipeline
On for the first cock of air main connection, for the second cock of brake pipe connection, for being connected with average tube
3rd cock, described parking brake unit also includes the impulse electromagnetic valve for being connected, described with Parking Brake Cylinders
One cock, the second cock are connected with described impulse electromagnetic valve respectively,
Described parking brake unit also includes that the first double check valve, the first described double check valve have first
End, the second end, the 3rd end, the first end of described first double check valve is connected with described impulse electromagnetic valve, and described first
Second end of double check valve is communicated on the pipeline between described second cock and impulse electromagnetic valve, described first dual check
3rd end of valve is communicated in...It is not turned between first end and second end of described first double check valve, described first two-way
First end of check-valves and the conducting of the 3rd end, the second end of described first double check valve and the conducting of the 3rd end,
Described impulse electromagnetic valve has to be parked relieved state and parks applying state, and described parking brake unit has
Locomotive running state, locomotive parking brake apply state, the long-range relieved state of locomotive parking brake,
When parking brake unit is in locomotive running state, the first cock is in open mode, the second cock, the 3rd plug
Door be closed, impulse electromagnetic valve is in parks relieved state, the compressed air in air main sequentially pass through the first cock,
Parking Brake Cylinders is entered, it is achieved the alleviation of parking brake after impulse electromagnetic valve, the first end of the first double check valve and the 3rd end；
When parking brake unit is in locomotive parking brake applying state, the first cock is in open mode, the second plug
Door, the 3rd cock are closed, and impulse electromagnetic valve is in parks applying state, and the air in Parking Brake Cylinders sequentially passes through
Discharging after 3rd end of the first double check valve and the first end, impulse electromagnetic valve, the source of the gas in air main is cut by impulse electromagnetic valve
Only；
When parking brake unit is in the long-range relieved state of locomotive parking brake, the first cock is closed, the
Two cocks, the 3rd cock are in open mode, and the compressed air in brake pipe sequentially passes through the second cock, the first double check valve
The second end and the 3rd end after enter Parking Brake Cylinders, the gas in brake cylinder average tube is by discharging after the 3rd cock.
Preferably, the first cock, the second cock, the 3rd cock are integrated one or three valves, and three described valves include a use
Control the first cock, the second cock, the handle of the 3rd cock in simultaneously, described handle has primary importance and the second position,
When described handle is in primary importance, the first described cock is in open mode, and the second cock and the 3rd cock are in
Closed mode, when described handle turns to the second position, the first cock is closed, the second cock and the 3rd cock
It is in open mode.
Preferably, described parking brake unit also includes the first check-valves, the second check-valves, the first described check-valves
Being located on the pipeline between described the first cock and impulse electromagnetic valve, the direction of the first described check-valves is referred to by the first cock
To described impulse electromagnetic valve, the pipeline between described the second cock and impulse electromagnetic valve is located at by the second described check-valves
On, the direction of the second described check-valves impulse electromagnetic valve described in the second cock is pointed to, described first double check valve
3rd end is communicated on the pipeline of the second cock and the second check-valves.
Preferably, described parking brake unit also includes on the pipeline be located between Parking Brake Cylinders and impulse electromagnetic valve
For reducing the air relief valve of loine pressure.
Preferably, described parking brake unit also includes the use on the pipeline be located between Parking Brake Cylinders and air relief valve
In connection or the 4th cock of blocking-up pipeline.
Preferably, described parking brake unit is also parked reservoir with one and is connected, and described only parks reservoir and first
Return valve, pipeline between the second check-valves and impulse electromagnetic valve is connected, when described parking brake unit is in locomotive operation
When state and locomotive are without fire loopback state, described parks the reservoir air pressure for stable parking brake unit.
Preferably, described parking brake unit also includes the second double check valve being located on pipeline, described second
Double check valve has the first end, the second end, the 3rd end, and the first end of described second double check valve is connected with impulse electromagnetic valve
Logical, the second end of described second double check valve is connected with the pipeline of a connection checking cylinder, described second double check valve
3rd end is connected with Parking Brake Cylinders, is not turned between the first end and second end of described second double check valve, and described
First end of two double check valves and the conducting of the 3rd end, the second end of described second double check valve and the conducting of the 3rd end.
Preferably, the pipeline between described checking cylinder and described double check valve is provided with one for signal piping pressure
The pressure transducer of power.
Preferably, the pipeline between described cock and air relief valve is additionally provided with and opens for the pressure transmitting pressure signal
Close.
Due to the enforcement of above technical scheme, the application compared with prior art has the advantage that
A kind of parking brake unit described herein includes the first double check valve, when parking brake unit is in locomotive
During the long-range relieved state of parking brake, the first cock is closed, and the second cock, the 3rd cock are in open mode, system
Compressed air in dynamic pipe enters parking brake after sequentially passing through the second cock, the second end of the first double check valve and the 3rd end
Cylinder, the gas in brake cylinder average tube is by discharging after the 3rd cock.Compressed gas in brake pipe not through impulse electromagnetic valve,
Needing not move through the control of impulse electromagnetic valve, therefore when without fire loopback, no matter whether driver applies parking brake is released
Putting button, the pressure that has in Parking Brake Cylinders inputs, it is ensured that it is alleviated.
Accompanying drawing explanation
Fig. 1 is the structural representation of parking brake unit of the present invention,
1, three valve；11, the first cock；12, the second cock；13, the 3rd cock；21, the first check-valves；22, second only
Return valve；3, impulse electromagnetic valve；4, the second double check valve；5, air relief valve；6, the 4th cock；71, checking cylinder；72, reservoir is parked；
73, air main；74, brake pipe；75, brake cylinder average tube；76, Parking Brake Cylinders；8, pressure transducer；9, test splice；10,
One pressure switch；20, the second pressure switch；30, the first double check valve.
Detailed description of the invention
A kind of parking brake control unit with long-range mitigation capability as shown in Figure 1 include being located on pipeline for
With the first cock 11 of air main 73 connection, for second cock 12 of brake pipe 74 connection, for being connected with average tube
3rd cock 13, described parking brake unit also includes the impulse electromagnetic valve 3 for being connected with Parking Brake Cylinders 76, described
First cock the 11, second cock 12 be connected with described impulse electromagnetic valve 3 respectively, described parking brake unit also includes
First double check valve 30, the first described double check valve 30 has the first end, the second end, the 3rd end, described first two-way
First end of check-valves 30 is connected with described impulse electromagnetic valve 3, and the second end of described first double check valve 30 is communicated in
On pipeline between described second cock 12 and impulse electromagnetic valve 3, the first end of described first double check valve 30 and the second end
Between be not turned on, the first end of described first double check valve 30 and the conducting of the 3rd end, the of described first double check valve 30
Two ends and the conducting of the 3rd end.Described parking brake unit also includes first check-valves the 21, second check-valves 22, described first
Check-valves 21 is located on the pipeline between described the first cock 11 and impulse electromagnetic valve 3, the side of the first described check-valves 21
Pointing to described impulse electromagnetic valve 3 to by the first cock 11, the second described cock 12 He is located at by the second described check-valves 22
On pipeline between impulse electromagnetic valve 3, described pulse electricity is pointed to by the second cock 12 in the direction of the second described check-valves 22
Magnet valve 3, the second end of described first double check valve 30 is communicated on the pipeline of the second cock 12 and the second check-valves 22.Described
Parking brake unit also include being located on the pipeline between Parking Brake Cylinders 76 and impulse electromagnetic valve 3 for reducing pipeline pressure
The air relief valve 5 of power.Described parking brake unit also includes the use being located on the pipeline between Parking Brake Cylinders 76 and air relief valve 5
In connection or the 4th cock 6 of blocking-up pipeline.Described parking brake unit is also parked reservoir 72 and is connected with one, and described stops
The pipeline leaked informaton between cylinder 72 with first check-valves the 21, second check-valves 22 and impulse electromagnetic valve 3 is connected, when described is parked
When brake unit is in locomotive running state and locomotive without fire loopback state, described parks reservoir 72 for stable parking brake
The air pressure of unit.Described parking brake unit also includes the second double check valve 4 being located on pipeline, and described second is two-way
Check-valves 4 has the first end, the second end, the 3rd end, and the first end of described second double check valve 4 is connected with impulse electromagnetic valve 3
Logical, the second end of described second double check valve 4 is connected with the pipeline of a connection checking cylinder 71, described second double check valve
3rd end of 4 is connected with Parking Brake Cylinders 76, is not turned between the first end and second end of described second double check valve 4,
First end of described second double check valve 4 and the conducting of the 3rd end, the second end and the 3rd end of described second double check valve 4 are led
Logical.The described pipeline between checking cylinder 71 and described double check valve be provided with one for signal piping pressure pressure pass
Sensor 8.The first pressure switch 10, second for controlling pressure it is additionally provided with on pipeline between described cock and air relief valve 55
Pressure switch 20.The first described pressure switch 10 is additionally provided with a test splice 9.
Described impulse electromagnetic valve 3 has to be parked relieved state and parks applying state, described parking brake unit tool
Locomotive running state, locomotive parking brake is had to apply state, the long-range relieved state of locomotive parking brake,
When parking brake unit is in locomotive running state, the first cock 11 is in open mode, the second cock 12,
Three cocks 13 are closed, and impulse electromagnetic valve 3 is in parks relieved state, and the compressed air in air main 73 sequentially passes through
Enter after first cock the 11, first check-valves 21, the first end of impulse electromagnetic valve the 3, first double check valve 30 and the 3rd end and stop
Parking Brake Cylinders is entered after putting the first end of checking cylinder the 76, second double check valve 4 and the second end, air relief valve the 5, the 4th cock 6
76, it is achieved the alleviation of parking brake；
When parking brake unit is in locomotive parking brake applying state, the first cock 11 is in open mode, and second
Cock the 12, the 3rd cock 13 is closed, and impulse electromagnetic valve 3 is in applying state of parking, the sky in Parking Brake Cylinders 76
Gas sequentially pass through the 4th cock 6, the 3rd end of air relief valve the 5, second double check valve the 4, first double check valve 30 and the second end,
Discharging after impulse electromagnetic valve 3, the source of the gas in air main 73 is ended by brake application magnet valve；
When parking brake unit is in the long-range relieved state of locomotive parking brake, the first cock 11 is closed,
Second cock the 12, the 3rd cock 13 is in open mode, and the compressed air in brake pipe 74 sequentially passes through the second cock 12, first
Second end of double check valve 30 and the 3rd end, the first end of the second double check valve 4 and the second end, air relief valve the 5, the 4th cock
Entering Parking Brake Cylinders 76 after 6, the gas in brake cylinder average tube 75 is by discharging after the 3rd cock 13..Train pipe is by two-way
It is to park reservoir to fill supplementing of wind path through double-pulsing electromagnetic valve to parking brake pipe that check-valves fills wind path to parking brake pipe,
The potential safety hazard that when double-pulsing electromagnetic valve is in errors present, parking brake pipe can not be alleviated can be reduced.Due to this technical scheme
It is directly to be used for alleviating parking brake by Brake pipe pressure, there may be parking brake in some cases and alleviate unstable feelings
Condition, needs to guarantee system safety operation by brake rigging status monitoring.
First cock the 11, second cock the 12, the 3rd cock 13 is integrated one or three valves 1, and three described valves 1 include a use
In controlling the handle of first cock the 11, second cock the 12, the 3rd cock 13 simultaneously, described handle has primary importance and second
Position, when described handle is in primary importance, the first described cock 11 is in open mode, the second cock 12 and the 3rd
Cock 13 is closed, and when described handle turns to the second position, the first cock 11 is closed, the second plug
Door 12 and the 3rd cock 13 are in open mode.First cock the 11, second cock the 12, the 3rd cock 13 is incorporated into one three
In valve 1, control the opening and closing of each cock by operating three valves 1 simultaneously.Because the mechanical couplings design of three valves 1 makes
Obtain each cock and produce correct action the most simultaneously, thus avoid maloperation.
A kind of parking brake unit described herein includes the first double check valve 30, when parking brake unit is in machine
During the long-range relieved state of car parking brake, the first cock 11 is closed, and the second cock the 12, the 3rd cock 13 is in be opened
State, the compressed air in brake pipe 74 sequentially passes through the second end and the 3rd end of second cock the 12, first double check valve 30
Rear entrance Parking Brake Cylinders 76, the gas in brake cylinder average tube 75 is by discharging after the 3rd cock 13.Compression in brake pipe 74
Gas is not through impulse electromagnetic valve 3, it is not necessary to through the control of impulse electromagnetic valve 3, therefore when without fire loopback, and nothing
Whether opinion driver applies parking brake release button, and the pressure that has in Parking Brake Cylinders 76 inputs, it is ensured that it is alleviated.
Above the application is described in detail, but the application is not limited to the above embodiments.All according to the application's
The equivalence that spirit is made changes or modifies, and all should contain in the protection domain of the application.
Claims (9)
1. a parking brake control unit with long-range mitigation capability, it is characterised in that: described parking brake unit bag
Include be located on pipeline for the first cock connected with air main, for brake pipe connection the second cock, for averagely
The 3rd cock that pipe is connected, described parking brake unit also includes the pulse electromagnetic for being connected with Parking Brake Cylinders
Valve, described the first cock, the second cock be connected with described impulse electromagnetic valve respectively,
Described parking brake unit also include the first double check valve, the first described double check valve have the first end,
Two ends, the 3rd end, the first end of described first double check valve is connected with described impulse electromagnetic valve, described first two-way only
The second end returning valve is communicated on the pipeline between described second cock and impulse electromagnetic valve, the of described first double check valve
Be not turned between one end and the second end, the first end of described first double check valve and the conducting of the 3rd end, described first two-way only
Return the second end and the conducting of the 3rd end of valve,
Described impulse electromagnetic valve has to be parked relieved state and parks applying state, and described parking brake unit has locomotive
Running status, locomotive parking brake apply state, the long-range relieved state of locomotive parking brake,
When parking brake unit is in locomotive running state, the first cock is in open mode, at the second cock, the 3rd cock
In closed mode, impulse electromagnetic valve is in parks relieved state, and the compressed air in air main sequentially passes through the first cock, pulse
Parking Brake Cylinders is entered, it is achieved the alleviation of parking brake after electromagnetic valve, the first end of the first double check valve and the 3rd end；
When parking brake unit be in locomotive parking brake apply state time, the first cock is in open mode, the second cock, the
Three cocks are closed, and impulse electromagnetic valve is in parks applying state, and the air in Parking Brake Cylinders sequentially passes through first
Discharging after 3rd end of double check valve and the first end, impulse electromagnetic valve, the source of the gas in air main is ended by brake application magnet valve；
When parking brake unit is in the long-range relieved state of locomotive parking brake, the first cock is closed, the second plug
Door, the 3rd cock are in open mode, the compressed air in brake pipe sequentially pass through the second cock, the of the first double check valve
Entering Parking Brake Cylinders after two ends and the 3rd end, the gas in brake cylinder average tube is by discharging after the 3rd cock.
A kind of parking brake control unit with long-range mitigation capability the most according to claim 1, it is characterised in that: the
One cock, the second cock, the 3rd cock are integrated one or three valves, and three described valves include that one controls the first plug for simultaneously
Door, the second cock, the handle of the 3rd cock, described handle has primary importance and the second position, when described handle is in
During primary importance, the first described cock is in open mode, and the second cock and the 3rd cock are closed, when described
When handle turns to the second position, the first cock is closed, and the second cock and the 3rd cock are in open mode.
A kind of parking brake control unit with long-range mitigation capability the most according to claim 1, it is characterised in that: institute
The parking brake unit stated also includes that the first described plug is located at by the first check-valves, the second check-valves, the first described check-valves
On pipeline between door and impulse electromagnetic valve, the direction of the first described check-valves pulse electromagnetic described in the first cock is pointed to
Valve, the second described check-valves is located on the pipeline between described the second cock and impulse electromagnetic valve, the second described non-return
The direction of valve impulse electromagnetic valve described in the second cock is pointed to, the second end of described first double check valve is communicated in the second plug
Door with on the pipeline of the second check-valves.
A kind of parking brake control unit with long-range mitigation capability the most according to claim 3, it is characterised in that: institute
The parking brake unit stated also include on the pipeline being located between Parking Brake Cylinders and impulse electromagnetic valve for reducing pipeline pressure
The air relief valve of power.
A kind of parking brake control unit with long-range mitigation capability the most according to claim 4, it is characterised in that: institute
The parking brake unit stated also include on the pipeline being located between Parking Brake Cylinders with air relief valve for connecting or blocking pipeline
The 4th cock.
A kind of parking brake control unit with long-range mitigation capability the most according to claim 5, it is characterised in that: institute
The parking brake unit stated also is parked reservoir with one and is connected, described park reservoir and the first check-valves, the second check-valves with
Pipeline between impulse electromagnetic valve is connected, when described parking brake unit is in locomotive running state and locomotive without fire loopback
During state, described parks the reservoir air pressure for stable parking brake unit.
A kind of parking brake control unit with long-range mitigation capability the most according to claim 6, it is characterised in that: institute
The parking brake unit stated also includes that the second double check valve being located on pipeline, the second described double check valve have first
End, the second end, the 3rd end, the first end of described second double check valve is connected with impulse electromagnetic valve, described second two-way only
The pipeline of the second end and a connection checking cylinder that return valve is connected, the 3rd end and Parking Brake Cylinders of described second double check valve
It is connected, is not turned between the first end and second end of described second double check valve, the first of described second double check valve
End and the 3rd end conducting, the second end of described second double check valve and the conducting of the 3rd end.
A kind of parking brake control unit with long-range mitigation capability the most according to claim 7, it is characterised in that: institute
Pipeline between checking cylinder and the described double check valve stated is provided with one for the pressure transducer of signal piping pressure.
A kind of parking brake control unit with long-range mitigation capability the most according to claim 8, it is characterised in that: institute
The pressure switch for transmitting pressure signal it is additionally provided with on pipeline between cock and the air relief valve stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610570236.8A CN106167010B (en) | 2016-07-20 | 2016-07-20 | A kind of parking brake control unit with long-range mitigation capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610570236.8A CN106167010B (en) | 2016-07-20 | 2016-07-20 | A kind of parking brake control unit with long-range mitigation capability |
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| Publication Number | Publication Date |
|---|---|
| CN106167010A true CN106167010A (en) | 2016-11-30 |
| CN106167010B CN106167010B (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610570236.8A Active CN106167010B (en) | 2016-07-20 | 2016-07-20 | A kind of parking brake control unit with long-range mitigation capability |
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| CN108238062A (en) * | 2018-02-08 | 2018-07-03 | 中车洛阳机车有限公司 | The anti-overlapping system of railway vehicle brake and method |
| CN108454649A (en) * | 2018-04-04 | 2018-08-28 | 湖南高速铁路职业技术学院 | Locomotive remotely alleviates system with EMU parking brake |
| CN108944990A (en) * | 2018-08-10 | 2018-12-07 | 中车洛阳机车有限公司 | A kind of parking braking control module for railway engineering vehicle |
| CN114261379A (en) * | 2021-11-16 | 2022-04-01 | 中车株洲电力机车有限公司 | Parking brake accident application protection system and method and locomotive |
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| CN108454649A (en) * | 2018-04-04 | 2018-08-28 | 湖南高速铁路职业技术学院 | Locomotive remotely alleviates system with EMU parking brake |
| CN108454649B (en) * | 2018-04-04 | 2023-08-15 | 湖南高速铁路职业技术学院 | Remote relieving system for parking brake of locomotive and motor train unit |
| CN108944990A (en) * | 2018-08-10 | 2018-12-07 | 中车洛阳机车有限公司 | A kind of parking braking control module for railway engineering vehicle |
| CN114261379A (en) * | 2021-11-16 | 2022-04-01 | 中车株洲电力机车有限公司 | Parking brake accident application protection system and method and locomotive |
| CN114261379B (en) * | 2021-11-16 | 2022-12-09 | 中车株洲电力机车有限公司 | Parking brake accident application protection system and method and locomotive |
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| CN106167010B (en) | 2018-11-20 |
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