CN106660543A - Brake maintenance indicator - Google Patents
Brake maintenance indicator Download PDFInfo
- Publication number
- CN106660543A CN106660543A CN201480081316.6A CN201480081316A CN106660543A CN 106660543 A CN106660543 A CN 106660543A CN 201480081316 A CN201480081316 A CN 201480081316A CN 106660543 A CN106660543 A CN 106660543A
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- China
- Prior art keywords
- brake
- pressure
- indicator
- cylinder pressure
- source
- 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
-
- 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
-
- 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
A brake maintenance indication system having a first portion determines the brake cylinder pressure and a second portion that is configured to determine the intended brake cylinder pressure based on the difference between the brake pipe pressure and the emergency reservoir pressure. The intended brake cylinder pressure is preferably determined to be 2.5 times of the difference between the brake pipe pressure and the emergency reservoir pressure. In the event of brake cylinder over-pressurization or under-pressurization, an indicator is flagged, thus identifying the presence of a problem with the braking system.
Description
Background technology
1. technical field
The present invention relates to rail vehicle braking system, and more particularly, to a kind of low brake-cylinder pressure of reflection and enter
Enter the warning indicator of the brakes leakage in checking cylinder.
2. correlation technique
Control valve used in goods stock brakes, such as the New York air-lock by the Watertown positioned at New York are public
The DB-60 control valves of department (New York Air Brake Corporation) manufacture are Pennsylvanian by being located at
The AB types of western room braking company (Wabtec Corporation) manufacture in the U.S. of Wilmerding control valve, usually freight
Checking cylinder provide air pressure.If however, the pipeline between checking cylinder or control valve and vehicle has leakage, checking cylinder
Original start pressure will not be kept.In addition to checking cylinder leakage causes low brake-cylinder pressure, brakes may leak to system
In dynamic cylinder, cause high brake-cylinder pressure.
Recently increasing checking cylinder keeps valve is included to the improvement of AAR brakes, its compensation checking cylinder leakage.Another improvement
Valve is limited including checking cylinder is increased, it is discharged into checking cylinder overvoltage caused by the leakage in checking cylinder.Although these improvement can
To improve the overall security of brakes, but they may make the presence of braking defect become hidden so that detection is more tired
Difficulty, so as to delay correction action.Accordingly, it would be desirable to a kind of system, it can be in the low brake-cylinder pressure of brakes or into braking
Brakes in cylinder provides clear indication when leaking.
The content of the invention
The present invention includes a kind of braking maintenance indicator system, with Part I and Part II, Part I and system
The source connection of dynamic cylinder pressure, it is configured to determine the source of brake-cylinder pressure, 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 system
2.5 times of difference between dynamic pipe pressure and emergent reservoir pressure.
In one embodiment, the first indicator is contracting that can be when brake-cylinder pressure is identical with expected brake-cylinder pressure
Return is put and brake-cylinder pressure is less than the indicator button moved between extended position during expected brake-cylinder pressure.Second indicates
Device is that retracted position that can be when brake-cylinder pressure is identical with expected brake-cylinder pressure 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 until manually resetting.
The Part I of system determines actual brake-cylinder pressure, and can be arranged to utilize balancing gate pit and barrier film, has
The second Room that the first Room connected with the source of brake-cylinder pressure connects with atmospheric pressure, and the first Room and second Room are divided
Open and the first barrier film with the first impregnation area, wherein, the barrier film is configured to make the first indicator in retracted position and stretches
Move between out position.The power being biased into indicator in retracted position can be provided using spring, so as to produce little rank
Tolerance.The Part II of system determines expected brake-cylinder pressure, and connect with the source with brake pressure the 3rd Room,
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 barrier film, the second impregnation area is with 2.5:1 ratio is more than the first impregnation area, and the barrier film is configured to make the second instruction
Device is moved between retracted position and extended position.
In another embodiment of the present invention, system can be arranged to using 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
The circuit of expected brake-cylinder pressure, the expection brake-cylinder pressure is the difference 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 arranged in the housing, the housing 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 ground be mutually connected to four port test interfaces
A series of pipelines, the present invention each embodiment can be connected to brakes, wherein, four port test interfaces can be carried
The source in source, Brake pipe pressure for brake-cylinder pressure and the source of emergent reservoir pressure.Housing can be including one
Row port, these ports are configured to that the pipe operations of housing are connected to additional four port test adapters thereon,
So as to 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 can provide the source in the source of brake-cylinder pressure, the source of Brake pipe pressure and emergent reservoir pressure.
Description of the drawings
By the way that detailed description below is read in conjunction with the accompanying, the present invention is will be more fully understood and understands, in the accompanying drawings：
Fig. 1 is the schematic diagram of the first embodiment of braking maintenance indicator system of the invention；
Fig. 2 is the signal of the second embodiment of the braking maintenance indicator system in first position of the invention
Figure；
Fig. 3 is the signal of the second embodiment of the braking maintenance indicator system in the second place of the invention
Figure；
Fig. 4 is the schematic diagram of the 3rd embodiment of braking maintenance indicator system of the invention；
Fig. 5 is the signal of the first embodiment of the attachment location for braking maintenance indicator system of the invention
Figure；
Fig. 6 is the signal of the second embodiment of the attachment location for braking maintenance indicator system of the invention
Figure；
Fig. 7 is that have the brake control valve for being attached the various positions of braking maintenance indicator system of the invention
Schematic diagram.
Specific embodiment
With reference now to accompanying drawing, wherein identical reference represents all the time identical part, sees in FIG for indicating
The overvoltage of checking cylinder causes the braking maintenance indicator system 10 that under-voltage checking cylinder leaks.As shown in figure 1, instruction system 10 is wrapped
Include the second end of first port 12 and waste gas EX (atmospheric pressure) fluid communication connected with the sourced fluid of brake-cylinder pressure BC
The 3rd ports 16 and connect with the source ER of emergent reservoir pressure that mouth 14 is connected with the sourced fluid of Brake pipe pressure BP
The 4th port 18.
Instruction system 10 also includes the first Room 22 that will be connected with first port 12 and connect with second port 14 second
The first separate barrier film 20 of room 24.Barrier film 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 in retracted position by spring 28.Spring 28 preferably has offer by indicator 26
Preload 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 delayed of restriction is provided, with prevent mistake indicating fault.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 and 26 one-tenth covering relations of indicator, so as to keep
Pressure encapsulates (envelope), protects indicator 26 and prevents any environmental pollutants from entering instruction system 10, while allowing to indicate
Device 26 is moved to from the externally visible extended position of system 10.
Second barrier film 32 is arranged in instruction system 10, therefore will be connected with the 3rd port 16 and with Brake pipe pressure BP
The 3rd Room 34 and with the 4th port 18 and therefore the fourth ventricle 36 that connects with emergent reservoir pressure ER separate.Barrier film 32 is operated
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, and in extended position, indicator 38 is protruding from fourth ventricle 36.Indicator 38 is by second
Spring 40 is biased in retracted position.Preferably there is spring 40 offer indicator 38 to be moved into the about 10psi in retracted position
Biasing force preload.Second transparent or semitransparent indicator cover 42 can be arranged to and 38 one-tenth covering relations of indicator,
So as to keep pressure to encapsulate, protect indicator 38 and prevent any environmental pollutants from entering instruction system 10, while allowing indicator
38 when in extended position from outside.The power being associated with the movement of the second barrier film 32 is transferred to via floating pin 44
One barrier film 20.
The impregnation area of the second barrier film 32 selects about 2.5 times of the impregnation area for the first barrier film 20.Select pressure reduction 2.5:1
It is because the Brake pipe pressure BP needed for AAR compatible systems reduces the ratio with brake-cylinder pressure BC.More specifically, due to AAR
Volume relationship in brakes between auxiliary memory and checking cylinder, the reduction of Brake pipe pressure BP will cause brake-cylinder pressure
The increase (it is 2.5 times that Brake pipe pressure BP is reduced) of BC.For example, reduce when operator carries out 10psi Brake pipe pressures BP
To start during brake, brake-cylinder pressure BC increases 25psi.The present invention may be configured to have different desired non-AAR simultaneous
Appearance system or brakes be desired or required different pressure reduction.
Therefore, indicating that system 10 has determines emergent difference between reservoir pressure ER and Brake pipe pressure BP with according to pressure
Power compares 2.5:1 determines any brake pipe pressure drop (brake pipe reduction) and it is thus determined that expected brake-cylinder pressure BC increasings
Plus a part.System 10 also includes compareing 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
Any under-voltage or overvoltage of the little power bias of spring 28 and 40.
If more specifically, 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 or more of brake-cylinder pressure BC goal pressures, it indicates that system 10 will indicate checking cylinder leakage.Second barrier film 32 is used
Make expected brake-cylinder pressure BC, because the power that it will be responsive to act on barrier film 32 is poor (emergent in due to acting on room 36
Reservoir pressure and act in room 34 brake pipe BP pressure caused by) 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, so as to by power via floating pin 44 apply to first every
On film 20.Because the impregnation area of the second barrier film 32 is relative to the 2.5 of the impregnation area of the first barrier film 20:1 difference, the first Room
Brake-cylinder pressure BC in 22 must increase equivalent to the pressure differential effect on the barrier film 32 acted in the 3rd Room 34 and 36
2.5 times, the power for otherwise being provided by the second barrier film 32 will overcome biasing spring 28 and move the first barrier film 20.When by the second barrier film 32
The power of offer is applied the power of the checking cylinder BC pressure on barrier film 20 in the chamber 22 and offsets, more than preloading (for example for spring 28
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
Pressure that time should reach is visually indicated.Therefore, the movement of indicator 26 provides what brake-cylinder pressure BC had been leaked
Signal so that brake-cylinder pressure BC lower than expected brake-cylinder pressure BC amount 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
The pressure that what should reach preset time.During normal service brake application, nominally brake-cylinder pressure BC is brake pipe pressure
2.5 times of the reduction of power BP.Under release and refilling state completely, brake pipe BP pressure, auxiliary memory pressure and emergent
Nominally reservoir pressure is all filled to identical amount, usually 90psi, and brake-cylinder pressure is released into 0psig.It is right
In service brake application, Brake pipe pressure BP reduces required amount by train driver.Control valve in brakes 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 be braked apply 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
Till pipe pressure BP, now main working piston is moved to work lap position (service lap position), wherein aiding in
Connection between holder and checking cylinder is disconnected, and brake-cylinder pressure BC is controlled.
Due to the ratio 2.5 of the impregnation area of the impregnation area and the first barrier film 20 of the second barrier film 32:1, so if braking
Cylinder pressure BC is appropriate with the ratio that Brake pipe pressure BP is reduced during driving brake application, indicate system 10 will not with stretch or
Indicator in mark position is in dynamic balance.It is such as poor (emergent in due to acting on room 36 by the power acted on barrier film 32
Reservoir pressure is caused with preloading for the Brake pipe pressure and biasing spring 40 acted in room 34) determined by, such as
The amount that brake-cylinder pressure BC in fruit room 22 increases be equal to or more than that Brake pipe pressure BP reduces 2.5 times (for example when exist from
During the undesirable leakage of brake pipe, auxiliary memory or emergent holder to checking cylinder), barrier film 22 and 32 will be moved down, and
And indicator 38 will be moved to extended position, so as to visually indicate that checking cylinder is excessively filled.Due in checking cylinder
The undesirable leakage for producing overvoltage is typically what is caused by Fault Control valve, so instruction system 10 can provide Fault Control valve
Notice immediately.
Indicator 10 may be used to indicate that brakes keeps when valve is by mistake stayed in locations of high pressure.AAR is braked
System includes keeping valve, and when manually booting, the holding valve will suppress (bottle up) to brake by sealed brake cylinder waste 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.Generally using holding while long-term rank is reduced
Device, and according to AAR standards, retainer will control about 20psi in high pressure is arranged.Before casting off wharf, train undergoes many
Test needed for individual, it includes discharging brake and checking that each vehicle has discharged to verify brake.If vehicle is
Release brake, but retainer is by mistake arranged, it indicates that and system 10 will provide visual indicia, because the overvoltage of 20psi
Be 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 for providing power connection, system is indicated
System 10 can be by providing required 2.5:Piston that 1 ratio and gained are indicated and any combinations of sealing device are realizing.
In another embodiment of the present invention, braking maintenance indicator system 50 can include indicator button 52 and 54,
It is configured to be remained in extended position once being moved by barrier film 20 and 32 respectively.As shown in Figures 2 and 3, indicator button
52 and 54 only rest on respectively on barrier film 20 and 32, therefore when barrier film 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 in extended position with 58, these O-rings frictionally engage indicator button 52 and 54 and stretch out position to hold them in
In putting, while keeping the integrality of instruction system 10, and retain the signal of brakes 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 back into contracting by attendant
During return is put.
In another embodiment of the present invention, brake service indicators 60 can using 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
The LED or other conventional visual indicators by circuit drives of the pipe combination of (LED) drive circuit 68 and 70.Instruction system 60
It is preferably used low power electronicses circuit and battery 72 is powered, and can sleep mode function is included to detect brake pipe
Pressure is zero or economizes on electricity during nominal pressure.For example, Fig. 4 shows the simple analog circuit implementation of instruction system 60, and 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 voltage ratio metering (ratio-metric) of all signals by battery 72,
So that charged state of the circuit function independently of battery 72.In the case of simulation embodiment, can be via switch or similar
Electronic circuit reset.Digital embodiment can be programmed to provide store function in addition, and the store function will " lock
Deposit " indicating fault, till manually resetting or till being removed by built in diagnostics logic.It should be appreciated that the mould of Fig. 4
Intending circuit can be as integrated digital circuit, as the firmware run on microprocessor or microcontroller, or as simulation
Easily provide with the combination of digital circuit.
The various embodiments of braking service indicators of the invention can be positioned on standard AAR pipe holder, 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, the module is suitable to Jing
Pipe holder 82 is mutually connected to by existing four port interface 84 on unilateral pipe holder 82, four port interface is generally used for 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 of needs.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, so that the periodicity of brakes is tested.
As shown in fig. 6, the present invention can be incorporated in module 90, along the side of module 90 four port interfaces are attached directly to
84.Module 90 include a series of pipelines formed therein, they provide with the present invention and with positioned at module 90 the second side
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 brakes control valve
What in part, such as, by redesigning the packaging for controlling valve, interface is included in relief valve interface or installed in maintenance
Either meet an urgent need between part and pipe holder (or by present invention resides in pneumatic close system between part and pipe holder
Any other position of dynamic pipe pressure BP, emergent reservoir pressure ER and brake-cylinder pressure BC).As shown in fig. 7, indicating system 10
Can be integrated to respectively in any one at least three diverse location Alt 1, the Alt 2 and Alt 3 for controlling valve 94.
Claims (18)
1. it is a kind of to brake maintenance indicator system, including：
Part I, it is connected with the source of brake-cylinder pressure, and it is configured to determine the brake-cylinder pressure；
Part II, it is connected with the source in the source of Brake pipe pressure and emergent reservoir pressure, and it is configured to according to institute
State the difference between Brake pipe pressure and the emergent reservoir pressure 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
The stretching out when retracted position and brake-cylinder pressure when expection brake-cylinder pressure is identical is 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
The stretching out when retracted position and brake-cylinder pressure when expection brake-cylinder pressure is identical exceedes 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
And 2.5 times of the difference 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 barrier film, it separates first Room and second Room, and with the first impregnation area, the barrier film is configured to
First indicator is moved to into the extended position.
6. system according to claim 5, also including spring, the spring is provided and for first indicator to be biased into institute
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 pressure；
Fourth ventricle, it is connected with the source of emergent reservoir pressure；
Second barrier film, it separates the 3rd Room and fourth ventricle, and with the second impregnation area, second impregnation area
With 2.5:1 ratio is more than first impregnation area, and the barrier film is configured to be moved to second indicator described
Extended position.
8. system according to claim 7, also including second spring, the second spring is provided second indicator
The power being biased in the retracted position.
9. system according to claim 8, wherein, first indicator and the second indicator be attached to described first every
Film and the second barrier film so that first indicator and the second indicator are back to the contracting after the extended position is moved to
Return is put.
10. system according to claim 8, wherein, first indicator and the second indicator are configured to be maintained at
The extended position, until external force apply to first indicator and the second indicator to return it to the retracted position be
Only.
11. systems according to claim 1, wherein, the Part I includes first pressure sensor.
12. systems 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 is the Brake pipe pressure
And 2.5 times of the difference between the emergent reservoir pressure.
13. systems according to claim 10, wherein, first indicator and the second indicator include light-emitting diodes
Pipe.
14. systems according to claim 13, wherein, the circuit for calculating the expected brake-cylinder pressure includes simulation
Circuit.
15. systems according to claim 14, wherein, the circuit for calculating the expected brake-cylinder pressure includes numeral
Circuit.
16. systems according to claim 1, also including 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. systems according to claim 15, wherein, the housing also 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. systems according to claim 1, wherein, the part of the part first and second and first indicator
Control valve is attached to the second indicator, 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 true CN106660543A (en) | 2017-05-10 |
| CN106660543B 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 |
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| 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 CA CA2958226A patent/CA2958226C/en active Active
- 2014-08-20 WO PCT/US2014/051802 patent/WO2016028285A1/en active Application Filing
- 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 AU AU2014403805A patent/AU2014403805B2/en active Active
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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 |
|---|---|
| CA2958226A1 (en) | 2016-02-25 |
| BR112017002913A2 (en) | 2017-12-05 |
| WO2016028285A1 (en) | 2016-02-25 |
| BR112017002913B1 (en) | 2022-06-28 |
| AU2014403805A1 (en) | 2017-03-02 |
| CN106660543B (en) | 2018-04-13 |
| AU2014403805B2 (en) | 2017-05-11 |
| CA2958226C (en) | 2017-05-16 |
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