NO783872L - INDIRECT ACTIVE PRESSURE AIR BRAKE DEVICE - Google Patents
INDIRECT ACTIVE PRESSURE AIR BRAKE DEVICEInfo
- Publication number
- NO783872L NO783872L NO783872A NO783872A NO783872L NO 783872 L NO783872 L NO 783872L NO 783872 A NO783872 A NO 783872A NO 783872 A NO783872 A NO 783872A NO 783872 L NO783872 L NO 783872L
- Authority
- NO
- Norway
- Prior art keywords
- brake
- brake cylinder
- line
- main air
- spring accumulator
- Prior art date
Links
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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
- 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
- B60T13/261—Compressed-air systems systems with both indirect application and application by springs or weights and released by compressed air
- B60T13/265—Compressed-air systems systems with both indirect application and application by springs or weights and released by compressed air dependent systems, e.g. trailer systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Braking Arrangements (AREA)
- Regulating Braking Force (AREA)
Description
Oppfinnelsen vedrorer en indirekte virkende trykkluftbremseanordning, spesielt for skinnegående kjoretoyer, med en hovedluftledning, en til denne koblet, indirekte virkende styreventil, en til denne koblet bremsesylinder og en fjærakkumulatorbremsesylinder. The invention relates to an indirect-acting compressed air brake device, especially for rail-running vehicles, with a main air line, an indirect-acting control valve connected to this, a brake cylinder connected to this and a spring accumulator brake cylinder.
Tidligere kjent er en anordning av denne art (U.S. patent 2.531.055), ved hivlken bremsesylinderen via en indirekte virkende styreventil, fjærakkumulatorbremsesylinderen derimot direkte er koblet til hovedluftledningen. Når ved denne anordning trykket i hovedluftledningen, eksempelvis som folge av et brudd i denne, senkes til atmosfæretrykk, vil begge bremsesylindere sammen fremkalle en bremsekraft. Denne er imidlertid stbrre enn den bremsekraft, som er nodvendig for bremsing uten glidning av hjulene. Previously known was a device of this kind (U.S. patent 2,531,055), where the brake cylinder via an indirectly acting control valve, the spring accumulator brake cylinder, on the other hand, is directly connected to the main air line. When with this device the pressure in the main air line, for example as a result of a break in it, is lowered to atmospheric pressure, both brake cylinders will together produce a braking force. This is, however, greater than the braking force, which is necessary for braking without the wheels slipping.
Tidligere kjent er også en annen, direkte virkende bremseanordning (DE-AS 1.605.308), ved hvilken for stor bremsing unngås idet det foran fjærakkumulatorbremsesylinderen er koblet en sperreventil hvis to innganger hver er forbundet med en bremseventil som skal betjenes av kjoretoyets forer. Ved Also previously known is another, directly acting brake device (DE-AS 1,605,308), in which excessive braking is avoided as a blocking valve is connected in front of the spring accumulator brake cylinder, the two inputs of which are each connected to a brake valve to be operated by the driver of the vehicle. By
. denne bremseanordning skal bremsesylinder og fjærakkumlator-bremsesylinder betjenes atskilt via hver sin tilordnede bremseventil. Når f.eks. under en oppbremsning trykket i den bremseledning som er tilordnet bremsesylinderen, synker såsterkt, at ikke noen bremsing er mulig lenger, så vil via den annen bremseventil ikke automatisk innledes noen bremsing ved hjelp av fjærakkumulatorbremsesylinderen. For dette må kjoretoyets forer betjene den annen bremseventil. Denne bremseanordning har i overensstemmelse dermed to bremsekretser som i det vesentlige . this braking device, brake cylinder and spring accumulator brake cylinder must be operated separately via each assigned brake valve. When e.g. during braking, the pressure in the brake line assigned to the brake cylinder drops so strongly that no braking is possible anymore, so no braking will be automatically initiated via the second brake valve using the spring accumulator brake cylinder. For this, the driver of the vehicle must operate the second brake valve. Accordingly, this braking device has essentially two braking circuits
er atskilt fra hverandre, og er spesielt egnet for motorkjbre-toyer. " . are separated from each other, and are particularly suitable for motorized toys. ".
Oppfinnelsen, slik den erkarakteriserti patent-kravene, loser den oppgave å tilveiebringe en bremseanordning med én bremsesylinder og én fjærakkumulatorbremsesylinder, idet de hver for seg er istand til å fremkalle den fulle bremsekraft, ved hvilken bremseanordning fjærakkumulatorbremsesylinderen automatisk, fremkaller en bremsekraft, når bremsesylinderen ikke kan fremkalle noen eller bare en utilstrekkelig bremsekraft, hvorved en for stor bremsing imidlertid unngås. The invention, as it is characterized in the patent claims, solves the task of providing a braking device with one brake cylinder and one spring accumulator brake cylinder, each of which is capable of producing the full braking force, in which braking device the spring accumulator brake cylinder automatically produces a braking force, when the brake cylinder does not may produce some or only insufficient braking force, whereby excessive braking is however avoided.
Derved er det fordelaktig at fjærakkumulatorbremsesylinderen ikke bare påvirkes av trykket i hovedluftledningen, men automatisk også av bremsetrykket såfremt dette er stbrre. Thereby, it is advantageous that the spring accumulator brake cylinder is not only affected by the pressure in the main air line, but automatically also by the brake pressure if this is strong.
Oppfinnelsen skal i det folgende nærmere forklares ved hjelp av et utforelseseksempel som er fremstilt på tegningen. Denne viser en trykkluftbremse i skjematisk riss. In the following, the invention will be explained in more detail with the help of an embodiment shown in the drawing. This shows a compressed air brake in a schematic diagram.
I henhold til tegningen er det til en hovedluftledning 10 via en grenledning 11 koblet en styreventil 12. Hoved-luf tledningen 10 er igjen koblet til en på tegningen ikke nærmere vist fbrerbremseventil som eksempelvis kan betjenes av kjoretoyets forer. Styreventilen 12 er utformet på vanlig, According to the drawing, a control valve 12 is connected to a main air line 10 via a branch line 11. The main air line 10 is again connected to an additional brake valve, not shown in detail in the drawing, which can, for example, be operated by the driver of the vehicle. The control valve 12 is designed in the usual,
på tegningen ikke nærmere vist måte og har en hjelpeluftbehol-der 13 og en styrebeholder 14. En bremsesylinder 15 er via en-fbrste bremseledning 16 forbundet med styreventilen 12. Et stempel 17, som ved hjelp av en tilbakestillingsfjær 18 er forskyvbart til sin frigjbringsstilling, befinner seg i bremsesylinderen 15. Stemplet 17 er på ikke vist måte forbundet med en bremsestangmekanisme som presser bremseklosser mot lbpe-flaten på et kjbretbyhul når stemplet 17 mot tilbakestillings-fjærens 18 kraft forskyves mot venstre ifblge figuren. in the drawing in a manner not shown in detail and has an auxiliary air container 13 and a control container 14. A brake cylinder 15 is connected via a first brake line 16 to the control valve 12. A piston 17, which by means of a reset spring 18 can be moved to its release position, is located in the brake cylinder 15. The piston 17 is connected in a manner not shown to a brake rod mechanism which presses the brake pads against the lbpe surface of a kjbretbyhol when the piston 17 against the force of the reset spring 18 is displaced to the left according to the figure.
En tilbakeslagsventil 23. er på den ene side med en fbrste inngang 24 via en grenledning 28 koblet til bremseledningen 16, og på den annen side med en andre inngang 25 til en andre bremseledning 36. Enne er forbundet med hovedluftledningen 10. Dobbelttilbakeslagsventilens 23 utgang 26 er via en andre grenledning 27 koblet til en fjærakkumulatorbremsesylinder 29. Et stempel 30 som belastes av en sterk fjær 31, befinner seg i fjærakkumulatorbremsesylinderen 29. Stemplet 30 er likeledes på ikke vist måte via en stempelstang 35 for- A non-return valve 23 is connected on the one hand with a first input 24 via a branch line 28 to the brake line 16, and on the other hand with a second input 25 to a second brake line 36. One end is connected to the main air line 10. The output 26 of the double check valve 23 is via a second branch line 27 connected to a spring accumulator brake cylinder 29. A piston 30 which is loaded by a strong spring 31 is located in the spring accumulator brake cylinder 29. The piston 30 is likewise, in a manner not shown, via a piston rod 35 for
bundet med bremsestangmekanismen.bound with the brake rod mechanism.
Den beskrevne trykkluftbremses virkemåte er som fol-ger: Ved frigjort bremse hersker i hovedluftledningen 10 driftstrykk. Hjelpeluftbeholderen 13 er fylt og i styrebe-holderen 14 hersker likeledes driftstrykk. Trykkluft fra hovedluftledningen 10 strommer via den andre bremseledning 36 og dobbelttilbakeslagsventilen 23 inn i fjærakkumulatorbremsesylinderen 29. Derved skyves stemplet 30 mot hoyre, fjæren 31 komprimeres og stemplet 30 holdes i frigjoringsstilling. Bremseledningen 16 er uten trykk hvorved tilbakestillingsfjæren 18 er istand til å flytte stemplet 17 til sin frigjoringsstilling. The operation of the described compressed air brake is as follows: When the brake is released, there is an operating pressure of 10 in the main air line. The auxiliary air container 13 is filled and operating pressure also prevails in the control container 14. Compressed air from the main air line 10 flows via the second brake line 36 and the double check valve 23 into the spring accumulator brake cylinder 29. Thereby the piston 30 is pushed to the right, the spring 31 is compressed and the piston 30 is held in the release position. The brake line 16 is without pressure whereby the reset spring 18 is able to move the piston 17 to its release position.
For bremsing senkes trykket i hovedluftledningen 10 hvorved på kjent måte trykkluft fra hjelpeluftbeholderen 13 via styreventilen 12 og bremseledningen 16 strommer inn i bremsesylinderen 15 og stemplet 17 skyves mot fjærens 18 kraft mot venstre og bremseklossene presses mot kjoretoyhjulets lbpe-flate. Når bremsesylinderen 15 skal fremkalle full bremsekraft, blir trykket i den fbrste bremseledning 16 storre enn i den andre bremseledning 36 fordi trykket her er senket som i hovedluftledningen 10. For braking, the pressure in the main air line 10 is lowered whereby, in a known manner, compressed air from the auxiliary air container 13 via the control valve 12 and the brake line 16 flows into the brake cylinder 15 and the piston 17 is pushed against the force of the spring 18 to the left and the brake pads are pressed against the lbpe surface of the vehicle wheel. When the brake cylinder 15 is to produce full braking force, the pressure in the first brake line 16 becomes greater than in the second brake line 36 because the pressure here is lowered as in the main air line 10.
Dobbelttilbakeslagsventilen 23 har nu den oppgave å forhindre at begge bremsesylindere 15, 29 samtidig overforer sin bremsekraft til -bremsestangmekanismen for hver enkelt av de to bremsesylindere 15, 29 er jo istand til å fremkalle full bremsekraft. Hvis bremsekraften som gjor seg gjeldende ville være storre enn den tillatte fulle bremsekraft, så ville det kunne oppstå en glidning av hjulene, noe som som kjent ville fore til en forlenget bremsestrekning. The double check valve 23 now has the task of preventing both brake cylinders 15, 29 from simultaneously transferring their braking force to the brake rod mechanism for each of the two brake cylinders 15, 29 is capable of producing full braking force. If the braking force applied would be greater than the permitted full braking force, then a slippage of the wheels could occur, which would, as is known, lead to an extended braking distance.
Denne for store bremsing forhindres ved hjelp av dobbelttilbakeslagsventilen 23 som tillater trykkluft å strbm-me fra ledningen 16 gjennom inngangen 24, utgangen 26 og gren-ledningen 27 inn i fjærakkumulatorbremsesylinderen 29, hvorved inngangen 25 mot den andre bremseledning 36 er lukket. Således spennes fjæren 31 ved hjelp av det trykk som hersker i fjærakkumulatorbremsesylinderen 29, og stemplet 30 vil holde seg i frigjoringsstilling. Fjærakkumulatorbremsesylinderen 29 skal dimensjoneres slik at stemplet 30 forst kan innvirke på bremsestangmekanismen når trykket i hovedluftledningen 10 er blitt senket This excessive braking is prevented by means of the double check valve 23 which allows compressed air to flow from the line 16 through the input 24, the output 26 and the branch line 27 into the spring accumulator brake cylinder 29, whereby the input 25 towards the second brake line 36 is closed. Thus, the spring 31 is tensioned by means of the pressure prevailing in the spring accumulator brake cylinder 29, and the piston 30 will remain in the release position. The spring accumulator brake cylinder 29 must be dimensioned so that the piston 30 can only act on the brake rod mechanism when the pressure in the main air line 10 has been lowered
så langt ned at det er mindre enn trykket i den fbrste bremseledning 16 som i mellomtiden har okt. Vanligvis vil imidlertid fjærakkumulatorbremsesylinderen 29 ikke utove noen bremsekraft fordi nu luften via dobbelttilbakeslagsventilen 23 strommer inn i fjærakkumulatorbremsesylinderen 29 og fjæren 31 således-holdes spent. Når den bremsekraft som kreves av bremsesylinderen 15 er liten, senkes trykket i hovedluftledningen bare ubetydelig og fjærakkumulatorbremsesylinderens 29 fjær 31 holdes fremdeles spent ved dette trykk. so far down that it is less than the pressure in the first brake line 16 which in the meantime has oct. Usually, however, the spring accumulator brake cylinder 29 will not exert any braking force because now the air via the double check valve 23 flows into the spring accumulator brake cylinder 29 and the spring 31 is thus kept tense. When the braking force required by the brake cylinder 15 is small, the pressure in the main air line is lowered only slightly and the spring 31 of the spring accumulator brake cylinder 29 is still kept taut at this pressure.
I allminnelighet er bremsesylinderen 15 anordnet som driftsbremse og fjærakkumulatorbremsesylinderen tjener som andre bremse, som trer i funksjon når trykkluft ikke er tilstede. In general, the brake cylinder 15 is arranged as a service brake and the spring accumulator brake cylinder serves as a second brake, which comes into operation when compressed air is not present.
Eller når eksempelvis trykket i hjelpeluftbeholderen 13 ikke er tilstrekkelig for en fullstendig oppbremsing ved hjelp av bremsesylinderen 15, strekker trykket heller ikke til for via dobbelttilbakeslagsventilen 23 fullstendig å spenne fjæren i fjærakkumulatorbremsesylinderen 29, slik at stemplet 30 likeledes virker på stangmekanismen. Sammen vil- de to sylindre imidlertid alltid tilveiebringe tilstrekkelig kraft for en fullstendig oppbremsing. Or when, for example, the pressure in the auxiliary air container 13 is not sufficient for complete braking using the brake cylinder 15, the pressure is also not sufficient to fully tension the spring in the spring accumulator brake cylinder 29 via the double check valve 23, so that the piston 30 also acts on the rod mechanism. Together, however, the two cylinders will always provide sufficient power for complete braking.
Fagmannen kan i tillegg anordne en trykkutveksling mellom hovedluftledningen 10 og dobbelttilbakeslagsventilens andre inngang 25- Derved utvides mulighetene for utformingen av bremseanordningens enkelte elementer. The person skilled in the art can also arrange a pressure exchange between the main air line 10 and the double check valve's second input 25 - This expands the possibilities for the design of the brake device's individual elements.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1578777A CH624623A5 (en) | 1977-12-21 | 1977-12-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
NO783872L true NO783872L (en) | 1979-06-22 |
NO150627B NO150627B (en) | 1984-08-13 |
Family
ID=4411936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO783872A NO150627B (en) | 1977-12-21 | 1978-11-17 | INDIRECT EFFECTIVE PRESSURE BRAKE DEVICE |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0002853B1 (en) |
AT (1) | AT385958B (en) |
CH (1) | CH624623A5 (en) |
CS (1) | CS203027B2 (en) |
DE (1) | DE2860870D1 (en) |
NO (1) | NO150627B (en) |
PL (1) | PL126058B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19537622B4 (en) * | 1995-10-09 | 2006-11-23 | Daimlerchrysler Ag | Device for a rail vehicle with continuous main air line and spring-loaded parking brake |
DE102008033288B4 (en) * | 2008-07-11 | 2010-04-15 | Siemens Aktiengesellschaft | Air supply of a spring brake from at least two reserve compressed air tanks |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3116095A (en) * | 1961-08-11 | 1963-12-31 | Crane Co | Double-check quick relief combination valve for air brake systems |
GB1152266A (en) * | 1966-06-20 | 1969-05-14 | Westinghouse Brake & Signal | Brake Systems |
GB1470377A (en) * | 1973-07-12 | 1977-04-14 | Bendix Westinghouse Ltd | Spring-brake control system |
GB1538219A (en) * | 1975-06-27 | 1979-01-10 | Bendix Westinghouse Ltd | Vehicle braking apparatus |
-
1977
- 1977-12-21 CH CH1578777A patent/CH624623A5/de not_active IP Right Cessation
-
1978
- 1978-11-08 AT AT0797878A patent/AT385958B/en not_active IP Right Cessation
- 1978-11-17 NO NO783872A patent/NO150627B/en unknown
- 1978-12-07 EP EP78200355A patent/EP0002853B1/en not_active Expired
- 1978-12-07 DE DE7878200355T patent/DE2860870D1/en not_active Expired
- 1978-12-19 PL PL1978211914A patent/PL126058B1/en unknown
- 1978-12-20 CS CS788632A patent/CS203027B2/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0002853B1 (en) | 1981-07-22 |
CH624623A5 (en) | 1981-08-14 |
AT385958B (en) | 1988-06-10 |
NO150627B (en) | 1984-08-13 |
PL211914A1 (en) | 1979-09-10 |
PL126058B1 (en) | 1983-07-30 |
EP0002853A1 (en) | 1979-07-11 |
ATA797878A (en) | 1984-02-15 |
DE2860870D1 (en) | 1981-10-29 |
CS203027B2 (en) | 1981-02-27 |
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