CN106660543B - Brake service indicators - Google Patents
Brake service indicators Download PDFInfo
- Publication number
- CN106660543B CN106660543B CN201480081316.6A CN201480081316A CN106660543B CN 106660543 B CN106660543 B CN 106660543B CN 201480081316 A CN201480081316 A CN 201480081316A CN 106660543 B CN106660543 B CN 106660543B
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- Prior art keywords
- brake
- pressure
- indicator
- cylinder pressure
- expected
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Classifications
-
- 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
-
- 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
- B60T13/665—Electrical control in fluid-pressure brake systems the systems being specially adapted for transferring two or more command signals, e.g. railway 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
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake 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
- B60T17/226—Devices for monitoring or checking brake systems; Signal devices using devices being responsive to the difference between the fluid pressions in conduits of multiple braking systems
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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
- B61H13/00—Actuating rail vehicle brakes
- B61H13/34—Details
-
- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/40—Failsafe aspects of brake control systems
- B60T2270/406—Test-mode; Self-diagnosis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
One kind braking maintenance indicator system, has the Part I for determining brake-cylinder pressure and is configured to determine the Part II of expected brake-cylinder pressure according to the difference between Brake pipe pressure and emergent reservoir pressure.It is expected that brake-cylinder pressure is preferably determined as being poor 2.5 times between Brake pipe pressure and emergent reservoir pressure.In the case where checking cylinder is over-pressed or under-voltage, indicator makes a mark, so as to confirm braking system, there are problem.
Description
Background technology
1. technical field
The present invention relates to rail vehicle braking system, and more particularly, to one kind reflect low brake-cylinder pressure and into
Enter the warning indicator of the braking system leakage in checking cylinder.
2. correlation technique
The control valve used in goods stock braking system, for example, it is public by the New York air-lock of the Watertown positioned at New York
Take charge of the DB-60 control valves of (New York Air Brake Corporation) manufacture or by positioned at Pennsylvanian
The AB type control valves of western room braking company (Wabtec Corporation) manufacture in the U.S. of Wilmerding, are usually freight
Checking cylinder provide air pressure.However, if the pipeline between checking cylinder or control valve and vehicle has leakage, checking cylinder
It will not keep original start pressure.In addition to checking cylinder leakage causes low brake-cylinder pressure, braking system may leak to system
In dynamic cylinder, cause high brake-cylinder pressure.
Improvement to AAR braking systems recently includes increase checking cylinder and keeps valve, it compensates checking cylinder leakage.Another improvement
Including increase checking cylinder limitation valve, checking cylinder overvoltage caused by it is discharged into the leakage in checking cylinder.Although these improvement can
To improve the overall security of braking system, but they may make the presence of braking defect become hidden so that detection is more tired
Difficulty, so that delay correction acts.Therefore, it is necessary to a kind of system, it can be in the low brake-cylinder pressure of braking system or entrance braking
Braking system in cylinder provides clear indication when leaking.
The content of the invention
The present invention includes a kind of braking maintenance indicator system, has Part I and Part II, Part I and system
The source connection of dynamic cylinder pressure, it is configured to determine brake-cylinder pressure, the source of Part II and Brake pipe pressure and meets an urgent need
The source connection of reservoir pressure, it is configured to be determined according to the difference between Brake pipe pressure and emergent reservoir pressure pre-
Phase brake-cylinder pressure.When brake-cylinder pressure is less than expected brake-cylinder pressure, the first indicator provides signal, and works as checking cylinder
When pressure exceedes expected brake-cylinder pressure, the second indicator provides signal.Preferably, it is contemplated that brake-cylinder pressure is determined as making
Dynamic poor 2.5 times between pipe pressure and emergent reservoir pressure.
In one embodiment, the first indicator be can be when brake-cylinder pressure be identical with expected brake-cylinder pressure contracting
The indicator button moved between extended position when return is put and brake-cylinder pressure is less than expected brake-cylinder pressure.Second instruction
Device be can be when brake-cylinder pressure be identical with expected brake-cylinder pressure retracted position and brake-cylinder pressure exceed expected checking cylinder
The indicator button moved between extended position during pressure.These indicators can retract after signal is provided, Huo Zheke
To be maintained at extended position untill manually resetting.
The Part I of system determines actual brake-cylinder pressure, and can be arranged to utilize balancing gate pit and membrane, has
The first Room connected with the source of brake-cylinder pressure, the second Room connected with atmospheric pressure, and the first Room and second Room are divided
Open and there is the first membrane of the first impregnation area, wherein, which is configured to make the first indicator in retracted position and stretches
Moved between out position.Can provide power indicator being biased into retracted position, using spring so as to produce small rank
Tolerance.The Part II of system determines expected brake-cylinder pressure, and with the 3rd Room connected with the source of brake pressure,
The fourth ventricle connected with the source of emergent reservoir pressure, and the 3rd Room and fourth ventricle are separated and with the second dipping face
The second long-pending membrane, the second impregnation area is with 2.5:1 ratio is more than the first impregnation area, which is configured to make the second instruction
Device moves between retracted position and extended position.
In another embodiment of the present invention, system can be arranged to utilize numeral or analog circuit.In the embodiment party
In formula, Part I includes first pressure sensor, and Part II includes second and the 3rd pressure sensor and for calculating
It is expected that the circuit of brake-cylinder pressure, the expection brake-cylinder pressure is poor between Brake pipe pressure and emergent reservoir pressure
2.5 again.First indicator and the second indicator preferably include light emitting diode.For calculating the circuit of expected brake-cylinder pressure
Can be analog circuit, digital circuit or its certain combination.
By the way that indicator is set in the housing, which encapsulates the first and second of the first and second parts and retraction
Indicator and additionally have be configured to by first and second part operation mutually be connected to four port test interfaces
A series of pipelines, each embodiment of the invention can be connected to braking system, wherein, four port test interfaces can carry
The source in source, Brake pipe pressure for brake-cylinder pressure and the source of emergent reservoir pressure.Housing can include a system
Port is arranged, these ports are configured to for the pipe operations of housing to be connected to additional four port test adapters on it,
So as to which traditional test operation can be carried out by the present invention of the appropriate location on four port test interfaces.It is alternative
Ground, the first and second parts and the first and second indicators can be attached to control in any one at least multiple positions
Valve, the control valve are capable of providing the source in the source of brake-cylinder pressure, the source of Brake pipe pressure and emergent reservoir pressure.
Brief description of the drawings
Following detailed description is read in conjunction with the accompanying drawings, be will be more fully understood and is understood the present invention, in the accompanying drawings：
Fig. 1 is the schematic diagram of the first embodiment of braking maintenance indicator system according to the present invention；
Fig. 2 is the signal of the second embodiment of the braking maintenance indicator system in first position according to the present invention
Figure；
Fig. 3 is the signal of the second embodiment of the braking maintenance indicator system in the second place according to the present invention
Figure；
Fig. 4 is the schematic diagram of the 3rd embodiment of braking maintenance indicator system according to the present invention；
Fig. 5 is the signal for braking the first embodiment of the attachment location of maintenance indicator system according to the present invention
Figure；
Fig. 6 is the signal for braking the second embodiment of the attachment location of maintenance indicator system according to the present invention
Figure；
Fig. 7 is with the brake control valve for being used to be attached the various positions of braking maintenance indicator system according to the present invention
Schematic diagram.
Embodiment
Referring now to attached drawing, wherein identical reference numeral represents identical component all the time, see in Fig. 1 for indicating
The overvoltage of checking cylinder or the braking maintenance indicator system 10 for causing under-voltage checking cylinder to leak.As shown in Figure 1, instruction system 10 is wrapped
Include the first port 12 connected with the sourced fluid of brake-cylinder pressure BC, the second end being in fluid communication with exhaust gas EX (atmospheric pressure)
Mouthfuls 14, the 3rd port 16 that is connected with the sourced fluid of Brake pipe pressure BP and connected with the source ER of emergent reservoir pressure
The 4th port 18.
Instruction system 10 is further included the first Room 22 connected with first port 12 and connected with second port 14 second
The first separated membrane 20 of room 24.Membrane 20 is operably engaged to the vision that can be moved between retracted position and extended position
Indicator 26, in retracted position, indicator 26 is substantially housed within the first Room 22, in extended position, indicator 26 from first
Room 22 is protruding.Indicator 26 is biased into retracted position by spring 28.Spring 28, which preferably has, to be provided indicator 26
Preloaded towards the power of the about 10psi of retracted position bias, actual checking cylinder BC pressure and target checking cylinder BC pressure it
Between the hysteresis of restriction is provided, to prevent the indicating fault of mistake.It can be provided by selecting corresponding spring 28 to preload
His pressure bias value.Transparent or semitransparent indicator cover 30 can be arranged to indicator 26 into covering relation, so as to keep
Pressure encapsulates (envelope), protects indicator 26 and prevents any environmental pollutants from entering instruction system 10, while allows to indicate
Device 26 is moved to from 10 externally visible extended position of system.
Second membrane 32 is arranged in instruction system 10, will be with the 3rd port 16 and therefore being connected with Brake pipe pressure BP
The 3rd Room 34 and separated with the 4th port 18 and therefore with the emergent reservoir pressure ER fourth ventricles 36 connected.Membrane 32 operates
The second visual detector 38 that can be moved between retracted position and extended position is bonded to property, in retracted position, indicator
38 are substantially housed within fourth ventricle 36, protruding from fourth ventricle 36 in extended position, indicator 38.Indicator 38 is by second
Spring 40 is biased into retracted position.Spring 40 preferably has the about 10psi for providing and moving into indicator 38 in retracted position
Biasing force preload.Second transparent or semitransparent indicator cover 42 can be arranged to indicator 38 into covering relation,
So as to keep pressure to encapsulate, protect indicator 38 and prevent any environmental pollutants from entering instruction system 10, while allow indicator
38 when in extended position from outside.With the associated power of mobile phase of the second membrane 32 is transferred to via floating pin 44
One membrane 20.
About 2.5 times of the impregnation area of the first membrane of impregnation area selected as 20 of second membrane 32.Select pressure difference 2.5:1
It is due to the Brake pipe pressure BP reductions needed for AAR compatible systems and the ratio of brake-cylinder pressure BC.More specifically, due to AAR
Volume relationship in braking system between auxiliary memory and checking cylinder, the reduction of Brake pipe pressure BP will cause brake-cylinder pressure
The increase of BC (it is 2.5 times that Brake pipe pressure BP is reduced).For example, reduced when operator carries out 10psi Brake pipe pressures BP
During starting brake, brake-cylinder pressure BC increases 25psi.The present invention may be configured to have the non-AAR of different requirements simultaneous
Appearance system or braking system be desired or required different pressure differences.
Therefore, indicating that system 10 has determines emergent difference between reservoir pressure ER and Brake pipe pressure BP with according to pressure
Power is than 2.5:1 determines any brake pipe pressure drop (brake pipe reduction) and it is thus determined that expected brake-cylinder pressure BC increasings
The part added.System 10, which is further included, compare to determine if expected brake-cylinder pressure with actual brake-cylinder pressure BC
Another part of appropriate brake-cylinder pressure BC is actually generated, if do not produced, system 10 will indicate to exceed bullet respectively
The small power of spring 28 and 40 biases any under-voltage or over-pressed.
More specifically, if the brake-cylinder pressure in the first Room 22 is leaked to than being determined by the reduction of Brake pipe pressure BP
The low 10psi of brake-cylinder pressure BC goal pressures or more, it indicates that system 10 will indicate checking cylinder leakage.Second membrane 32 is used
Make expected brake-cylinder pressure BC, because the force difference that it will be responsive to act on membrane 32 is (emergent in room 36 due to acting on
Caused by reservoir pressure and the brake pipe BP pressure acted in room 34) and move, wherein brake pipe BP pressure from
The amount of brake pipe BP pressure drops is reduced in the balance of emergent reservoir pressure, thus by power via floating pin 44 apply to first every
On film 20.Since the impregnation area of the second membrane 32 is relative to the 2.5 of the impregnation area of the first membrane 20:1 difference, the first Room
Brake-cylinder pressure BC in 22 must increase equivalent to the pressure differential effect on the membrane 32 acted in the 3rd Room 34 and 36
2.5 times, the power otherwise provided by the second membrane 32 will overcome biasing spring 28 and move the first membrane 20.When by the second membrane 32
The power that the power of offer is applied the checking cylinder BC pressure in the chamber 22 on membrane 20 is offset, more than the preloading of spring 28 (such as
About 10psi) when, indicator 26 will be moved to extended position, so as to provide actual brake-cylinder pressure BC less than it any given
The pressure that time should reach visually indicates.Therefore, the movement of indicator 26 provides what brake-cylinder pressure BC had been leaked
Signal so that amount lower than expected brake-cylinder pressure BC brake-cylinder pressure BC is equal to preloading for spring 28.
Instruction system 10 may also indicate that the undesirable leakage into checking cylinder so that brake-cylinder pressure BC is in office higher than its
What gives the pressure fixed time and should reached.During normal service brake is applied, nominally brake-cylinder pressure BC is brake pipe pressure
2.5 times of the reduction of power BP.Under complete release and refilling state, brake pipe BP pressure, auxiliary memory pressure and emergent
It is usually 90psi, and brake-cylinder pressure is released into 0psig nominally reservoir pressure is all filled to identical amount.It is right
In service brake application, Brake pipe pressure BP is reduced required amount by train driver.Control valve in braking system includes work
Make piston, the side of the working piston is pressurizeed by brake pipe, and opposite side is pressurizeed by auxiliary memory.When Brake pipe pressure BP drops
It is low to carry out brake application when, due to the reduction of Brake pipe pressure BP, working piston is moved to brake application position.Should in braking
With position, it is allowed to the air flow from auxiliary memory to checking cylinder, until auxiliary memory pressure is substantially equal to braking
Untill pipe pressure BP, main working piston is moved to work lap position (service lap position) at this time, wherein aiding in
Connection between holder and checking cylinder is disconnected, and brake-cylinder pressure BC is controlled.
The ratio between impregnation area due to impregnation area and the first membrane 20 of the second membrane 32 2.5:1, so if braking
Cylinder pressure BC during brake application of driving a vehicle with Brake pipe pressure BP reduce ratio it is appropriate, instruction system 10 will not with stretching, extension or
Indicator in mark position is in dynamic balance.It is such as (emergent in room 36 due to acting on by acting on the force difference on membrane 32
Preloading for reservoir pressure and the Brake pipe pressure that acts in room 34 and biasing spring 40 is caused) determined by, such as
Increased amounts of brake-cylinder pressure BC in fruit room 22 be equal to or more than that Brake pipe pressure BP reduces 2.5 times (such as when exist from
Brake pipe, auxiliary memory or emergent holder to checking cylinder undesirable leakage when), membrane 22 and 32 will move down, and
And indicator 38 will be moved to extended position, so that visually instruction checking cylinder excessively fills.Due to entering in checking cylinder
The undesirable leakage for producing overvoltage is typically as caused by Fault Control valve, so instruction system 10 is capable of providing Fault Control valve
Notice immediately.
Indicator 10 may be used to indicate that braking system keeps when valve is inadvertently stayed in locations of high pressure.AAR is braked
System includes keeping valve, and when manually booting, which will suppress (bottle up) braking by sealed brake cylinder exhaust gas
Cylinder pressure BC.This allows train driver to suppress the brake on vehicle, then while retainer controls brake-cylinder pressure
All control valves on brake pipe and train are discharged and refilled.Holding is used usually while long-term rank is reduced
Device, and about 20psi will be controlled in high pressure is set according to AAR standards, retainer.Before casting off wharf, train is subjected to more
A required test, it includes discharging brake and checks each vehicle to verify that brake has discharged.If vehicle is
Brake is discharged, but retainer is inadvertently set, it indicates that system 10 will provide visual indicia, because the overvoltage of 20psi
It is enough to overcome preloading in spring 40 and indicator button 38 is moved in extended position.
Although illustrating embodiments of the present invention using the flexible partition and floating pin that provide power connection, instruction is
System 10 can pass through necessary to offer 2.5:1 piston of ratio and gained instruction and any combinations of sealing device is realized.
In another embodiment of the present invention, braking maintenance indicator system 50 can include indicator button 52 and 54,
It is configured to remain in extended position once being moved by membrane 20 and 32 respectively.As shown in Figures 2 and 3, indicator button
52 and 54 only rest on membrane 20 and 32 respectively, therefore when membrane 20 and 32 returns to retracted position from extended position, refer to
Show that device button is freely standing in extended position.As shown in figure 3, indicator button 52 and 54 can be by using O-ring 56
It is maintained at 58 in extended position, these O-rings frictionally engage indicator button 52 and 54 and stretch out position to hold them in
In putting, while the integrality of instruction system 10 is kept, and retain the signal of braking system mistake.Indicator button 52 and 54 can be with
Be back to retracted position manually, i.e. it is observed that or after misregistration signal, they can be back into contracting by maintenance personnel
During return is put.
In another embodiment of the present invention, brake service indicators 60 can utilize brake pipe pressure sensor 62,
Emergent reservoir pressure sensor 64 and brake-cylinder pressure sensor 66 and adjoint analog or digital logic circuit are electronically
Realize, with based on emergent reservoir pressure PERWith Brake pipe pressure PBPExpected brake-cylinder pressure P is assessed using following equatioiesBC：
2.5X(PER-PBP)=PBC。
In this embodiment, for every kind of fault mode discussed above, electronic device can include and light-emitting diodes
Manage LED or other conventional visual indicators by circuit drives that (LED) drive circuit 68 and 70 combines.Instruction system 60
Low power electronics circuit is preferably used and battery 72 is powered, and sleep mode function can be included to detect brake pipe
Pressure is zero or when nominal pressure economizes on electricity.For example, Fig. 4 shows the simple analog circuit implementation of instruction system 60, this refers to
Show that system uses deformeter type pressure sensor 62,64 and 66, for indicating the LED circuit 68 and 70, Yi Jizuo of fault mode
For the battery 72 of power supply.Circuit arrangement is to cause all signals to measure (ratio-metric) by the voltage ratio of battery 72,
So that charged state of the circuit function independently of battery 72., can be via switch or similar in the case where simulating embodiment
Electronic circuit reset.Digital embodiment can be programmed in addition provide store function, which will " lock
Deposit " indicating fault, untill manually resetting or untill being removed by built in diagnostics logic.It should be appreciated that the mould of Fig. 4
Integrated digital circuit can be used as by intending circuit, as the firmware run on microprocessor or microcontroller, or as simulation
Combination with digital circuit easily provides.
The various embodiments of braking service indicators can be positioned on standard AAR pipe holders according to the present invention, such as
It is further illustrated in Fig. 5 and Fig. 6.For example, as shown in figure 5, instruction system 10 can be arranged in module 80, which is suitable for warp
Pipe holder 82 is mutually connected to by existing four port interface 84 on unilateral pipe holder 82, four port interface is commonly used in periodically
It is connected to single unit vehicle test equipment.Four port interfaces 84 include offer and Brake pipe pressure BP, auxiliary memory pressure AR, answer
The pipeline of the fluid communication of anxious reservoir pressure ER and brake-cylinder pressure BC, and therefore can provide for all of the present invention
The input needed.In Figure 5, module 80 is connected directly to four port interfaces 84 of pipe holder 82.Therefore, must remove module
80 so that single unit vehicle test equipment can be connected to four port interfaces 84, be tested so as to the periodicity of braking system.
As shown in fig. 6, the present invention can be incorporated into module 90, four port interfaces are attached directly to along the side of module 90
84.Module 90 includes a series of pipelines formed therein, they provide with the present invention and with positioned at the second side of module 90
On one group of port of correspondence (they replicate four port interfaces 84) fluid communication so that test adapter 92 can be bolted in mould
On block 90, to allow to be connected with the periodicity of single unit vehicle test equipment.
It should be recognized by those skilled in the art that the instruction system of the present invention can be only fitted to appointing for braking system control valve
What in part, such as by redesigning the packaging of control valve, interface is included in relief valve interface or installed in maintenance
Partly either meet an urgent need between pipe holder between part and pipe holder (or by including the present invention with pneumatically close to system
Dynamic pipe pressure BP, any other position of emergent reservoir pressure ER and brake-cylinder pressure BC).As shown in fig. 7, instruction system 10
It can be integrated to respectively in any one at least three diverse location Alt 1, Alt 2 and the Alt 3 of control valve 94.
Claims (18)
1. one kind braking maintenance indicator system, including：
Part I, it is connected with the source of brake-cylinder pressure and exhaust gas, it is configured to determine the brake-cylinder pressure；
Part II, it is connected with the source of Brake pipe pressure and the source of emergent reservoir pressure, it is configured to according to institute
The difference between Brake pipe pressure and the emergent reservoir pressure is stated to determine expected brake-cylinder pressure；
First indicator, it is configured to provide the first letter when the brake-cylinder pressure is less than the expected brake-cylinder pressure
Number；And
Second indicator, it is configured to provide the second letter when the brake-cylinder pressure exceedes the expected brake-cylinder pressure
Number.
2. system according to claim 1, wherein, first indicator include can the brake-cylinder pressure with it is described
It is expected that the stretching when retracted position and the brake-cylinder pressure when brake-cylinder pressure is identical are less than the expected brake-cylinder pressure
The indicator button moved between position.
3. system according to claim 2, wherein, second indicator include can the brake-cylinder pressure with it is described
It is expected that the stretching when retracted position and the brake-cylinder pressure when brake-cylinder pressure is identical exceed the expected brake-cylinder pressure
The indicator button moved between position.
4. system according to claim 3, wherein, the expected brake-cylinder pressure is determined as the Brake pipe pressure
Poor 2.5 times between the emergent reservoir pressure.
5. system according to claim 4, wherein, the Part I includes：
First Room, it is connected with the source of the brake-cylinder pressure；
Second Room, it is connected with atmospheric pressure；
First membrane, it separates first Room and second Room, and has the first impregnation area, first membrane by with
It is set to and first indicator is moved to the extended position.
6. system according to claim 5, further includes spring, the spring is provided is biased into institute by first indicator
State the power in retracted position.
7. system according to claim 5, wherein, the Part II includes：
3rd Room, it is connected with the source of Brake pipe pressure；
Fourth ventricle, it is connected with the source of emergent reservoir pressure；
Second membrane, it separates the 3rd Room and fourth ventricle, and has the second impregnation area, second impregnation area
With 2.5:1 ratio is more than first impregnation area, and second membrane is configured to second indicator being moved to
The extended position.
8. system according to claim 7, further includes second spring, the second spring is provided second indicator
The power being biased into the retracted position.
9. system according to claim 8, wherein, first indicator and the second indicator are respectively attached to described
One membrane and the second membrane so that first indicator and the second indicator are back to institute after the extended position is moved to
State retracted position.
10. system according to claim 8, wherein, first indicator and the second indicator are configured to be maintained at
The extended position, is until external force applies to first indicator and the second indicator to return it to the retracted position
Only.
11. system according to claim 1, wherein, the Part I includes first pressure sensor.
12. system according to claim 11, wherein, the Part II includes second pressure sensor and the 3rd pressure
Sensor and the circuit for calculating the expected brake-cylinder pressure, the expected brake-cylinder pressure are the Brake pipe pressure
Poor 2.5 times between the emergent reservoir pressure.
13. system according to claim 10, wherein, first indicator and the second indicator include light-emitting diodes
Pipe.
14. system according to claim 13, wherein, the circuit for calculating the expected brake-cylinder pressure includes simulation
Circuit.
15. system according to claim 13, wherein, the circuit for calculating the expected brake-cylinder pressure includes numeral
Circuit.
16. system according to claim 1, further includes housing, the housing encapsulates the Part I and Part II
And first indicator and the second indicator, and it is with being configured to that the Part I and Part II is operational
Ground is mutually connected to a series of pipelines of four port test interfaces, and the four port tests interface provides coming for the brake-cylinder pressure
The source in source, the source of the Brake pipe pressure and the emergent reservoir pressure.
17. system according to claim 16, wherein, the housing further includes a series of ports, and the port is configured
Into the pipe operations of the housing to be connected to four port test adapters.
18. system according to claim 1, wherein, the Part I and Part II and first indicator
With the second indicator it is attached to control valve, the control valve provides the source of the brake-cylinder pressure, the Brake pipe pressure
Source and the source of the emergent reservoir pressure.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2014/051802 WO2016028285A1 (en) | 2014-08-20 | 2014-08-20 | Brake maintenance indicator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106660543A CN106660543A (en) | 2017-05-10 |
| CN106660543B true CN106660543B (en) | 2018-04-13 |
Family
ID=51453888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480081316.6A Active CN106660543B (en) | 2014-08-20 | 2014-08-20 | Brake service indicators |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN106660543B (en) |
| AU (1) | AU2014403805B2 (en) |
| BR (1) | BR112017002913B1 (en) |
| CA (1) | CA2958226C (en) |
| WO (1) | WO2016028285A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1127388B (en) * | 1958-12-23 | 1962-04-12 | Deutsche Bundesbahn | Brake testing system for carrying out leak tests and brake tests on automatic air brakes on rail vehicles |
| CN2351338Y (en) * | 1998-12-23 | 1999-12-01 | 费月波 | Multi-function alarm for vehicle brake leakage |
| CN1517255A (en) * | 2003-01-17 | 2004-08-04 | 陶兴武 | Automatic alarming and braking system for vehicle under-pressure |
| CN2794952Y (en) * | 2004-12-31 | 2006-07-12 | 姜航波 | Automobile hydranlic brake leakage warning protector |
| CN101249827A (en) * | 2007-02-25 | 2008-08-27 | 姜航波 | Seepage and leakage alarm protection device for automobile hydraulic brake system and installing method thereof |
| WO2012038277A2 (en) * | 2010-09-20 | 2012-03-29 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Pneumatic control valve for a brake cylinder of a rail vehicle |
| WO2013152006A1 (en) * | 2012-04-03 | 2013-10-10 | Wabtec Holding Corp. | Brake cylinder maintaining valve |
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| DE2123374A1 (en) * | 1971-05-11 | 1972-11-30 | Knorr Bremse GmbH, 8000 München | Compressed air-operated display device for the application status of rail vehicle friction brakes |
| DD114037A5 (en) * | 1973-11-24 | 1975-07-12 | ||
| DE2553584A1 (en) * | 1975-11-28 | 1977-06-08 | Knorr Bremse Gmbh | METHOD AND DEVICE FOR COMPRESSED AIR BRAKING SYSTEMS OF RAIL VEHICLES TO DETECT AND / OR INDICATE EMERGENCY BRAKING |
| DE3126153A1 (en) * | 1981-07-02 | 1983-01-20 | Knorr-Bremse GmbH, 8000 München | "DISPLAY DEVICE FOR VEHICLE BRAKES, IN PARTICULAR DISC BRAKES OF RAIL VEHICLES" |
| US4641892A (en) * | 1984-12-12 | 1987-02-10 | Dsl Dynamic Sciences Limited | Railway emergency brake system |
| DE10029125B4 (en) * | 2000-06-14 | 2004-08-26 | Siemens Ag | Alarm device for a compressed air controlled braking system of a vehicle |
| DE102010048818A1 (en) * | 2010-10-20 | 2012-04-26 | Bombardier Transportation Gmbh | Method and device for detecting leaks in brake cylinder circuits |
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2014
- 2014-08-20 AU AU2014403805A patent/AU2014403805B2/en active Active
- 2014-08-20 CA CA2958226A patent/CA2958226C/en active Active
- 2014-08-20 BR BR112017002913-8A patent/BR112017002913B1/en active IP Right Grant
- 2014-08-20 CN CN201480081316.6A patent/CN106660543B/en active Active
- 2014-08-20 WO PCT/US2014/051802 patent/WO2016028285A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE1127388B (en) * | 1958-12-23 | 1962-04-12 | Deutsche Bundesbahn | Brake testing system for carrying out leak tests and brake tests on automatic air brakes on rail vehicles |
| CN2351338Y (en) * | 1998-12-23 | 1999-12-01 | 费月波 | Multi-function alarm for vehicle brake leakage |
| CN1517255A (en) * | 2003-01-17 | 2004-08-04 | 陶兴武 | Automatic alarming and braking system for vehicle under-pressure |
| CN2794952Y (en) * | 2004-12-31 | 2006-07-12 | 姜航波 | Automobile hydranlic brake leakage warning protector |
| CN101249827A (en) * | 2007-02-25 | 2008-08-27 | 姜航波 | Seepage and leakage alarm protection device for automobile hydraulic brake system and installing method thereof |
| WO2012038277A2 (en) * | 2010-09-20 | 2012-03-29 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Pneumatic control valve for a brake cylinder of a rail vehicle |
| WO2013152006A1 (en) * | 2012-04-03 | 2013-10-10 | Wabtec Holding Corp. | Brake cylinder maintaining valve |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2014403805B2 (en) | 2017-05-11 |
| CN106660543A (en) | 2017-05-10 |
| CA2958226C (en) | 2017-05-16 |
| CA2958226A1 (en) | 2016-02-25 |
| BR112017002913A2 (en) | 2017-12-05 |
| AU2014403805A1 (en) | 2017-03-02 |
| WO2016028285A1 (en) | 2016-02-25 |
| BR112017002913B1 (en) | 2022-06-28 |
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