DE291709C - - Google Patents
Info
- Publication number
- DE291709C DE291709C DENDAT291709D DE291709DA DE291709C DE 291709 C DE291709 C DE 291709C DE NDAT291709 D DENDAT291709 D DE NDAT291709D DE 291709D A DE291709D A DE 291709DA DE 291709 C DE291709 C DE 291709C
- Authority
- DE
- Germany
- Prior art keywords
- chamber
- pressure
- piston
- dead space
- brake
- 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.)
- Active
Links
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
- B60T13/58—Combined or convertible systems
- B60T13/64—Combined or convertible systems both single and multiple, e.g. single and tandem
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Arrangements (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Bei der Bremse nach Patent 291179 kann es vorkommen, daß das Rückschlagventil, welches zwischen dem Totraum V der Zweikammerbremse B2 und dem Arbeitsraum III der Einkammerbremse B1 geschaltet ist, sich nicht sofort schließt, wenn der Druck sich zwischen der Zweikammerbremse und der Einkammerbremse ausgeglichen hat. Es ist dies darauf zurückzuführen, daß die das Ventil schließende Feder das Ventil schon seinem Sitz nähert, wenn der Druck auf beiden Seiten noch nicht vollständig ausgeglichen ist, und dabei den an den Totraum angeschlossenen Kanal abschließt, so daß ein weiterer Druckausgleich unterbleibt, sofern nicht genügende Undichtheiteri vorhanden sind. Hierdurch wird das Eintreten der größten Bremswirkung wesentlich verzögert.With the brake according to patent 291179 it can happen that the check valve, which is connected between the dead space V of the two-chamber brake B 2 and the working chamber III of the single-chamber brake B 1 , does not close immediately when the pressure between the two-chamber brake and the single-chamber brake is equalized Has. This is due to the fact that the spring closing the valve is already approaching its seat when the pressure on both sides is not yet completely equalized, and thereby closes the channel connected to the dead space, so that further pressure equalization does not take place unless it is there are sufficient leaks. This significantly delays the occurrence of the greatest braking effect.
Dieser Übelstand wird gemäß der Erfindung dadurch beseitigt, daß das zwischen dem Totraum der Zweikammerbremse und dem Arbeitsraum der Einkammerbremse geschaltete Rückschlagventil durch einen Flachschieber ersetzt ist, der von einem Differentialkolben gesteuert wird, dessen kleinere Kolbenfläche durch den Druck des Totraumes der Zweikammerbremse und dessen größere Fläche durch den Druck des Einkammerzylinders belastet ist.This drawback is eliminated according to the invention in that the between the dead space the two-chamber brake and the working chamber of the single-chamber brake is replaced by a flat slide controlled by a differential piston whose smaller piston area is caused by the pressure of the dead space of the two-chamber brake and the larger area of which is loaded by the pressure of the single-chamber cylinder.
In Fig. ι ist das Rückschlagventil in der Stellung nach eingetretenem Druckausgleich, und in Fig. 2 in der- Stellung vor Eintritt des Druckausgleichs dargestellt.In Fig. Ι the check valve is in the position after pressure equalization has occurred, and in Fig. 2 in the position shown before the pressure equalization occurs.
Bei Einleitung einer Bremsung wird der Totraum V über Leitung D, Kanäle 5, 17, 8, 9, 12 und 18 mit dem Schieberraum VI verbunden (Fig. 2). Von dort gelangt die Luft über Kanal 6 und Leitung F zu dem Einkammerzylinder III. Gleichzeitig tritt die Druckluft auch durch den Abzweig D1 in den Raum VII. Solange nun der Druck im Totraum und damit in der Kammer VII größer ist als in dem Einkammerzylinder III und Kammer VI, bleiben die Differentialkolben X1, X2 und der damit verbundene Schieber y in ihrer oberen Stellung, in welcher Luft in den Einkammerzylinder überströmt. Nähert sich dagegen der Druck in dem Einkammerzylinder und damit in Kammer VI demjenigen im Totraum V und damit in Kammer VII, so überwindet der Druck auf den größeren Kolben X1 den Druck auf den kleineren Kolben X2 sowie die Reibung des Schiebers y, und das Ganze wird so weit heruntergeschoben, ' daß nun der Totraum des Zweikammerzylinders über Kanal 18, die Höh-■lung des Schiebers y und den Kanal 19 mit der Außenluft verbunden wird.When braking is initiated, the dead space V is connected to the slide chamber VI via line D, channels 5, 17, 8, 9, 12 and 18 (FIG. 2). From there the air reaches the single-chamber cylinder III via channel 6 and line F. At the same time, the compressed air also passes through branch D 1 into space VII. As long as the pressure in the dead space and thus in chamber VII is greater than in the single-chamber cylinder III and chamber VI, the differential pistons X 1 , X 2 and the associated piston remain Slide y in its upper position, in which air flows over into the single-chamber cylinder. If, on the other hand, the pressure in the single-chamber cylinder and thus in chamber VI approaches that in dead space V and thus in chamber VII, the pressure on the larger piston X 1 overcomes the pressure on the smaller piston X 2 and the friction of the slide y, and that The whole is pushed down so far that the dead space of the two-chamber cylinder is now connected to the outside air via channel 18, the cavity of slide y and channel 19.
Der Unterschied der Durchmesser der beiden Kolben X1 und x2 wird allein nach der ruhenden Reibung des Schiebers y bemessen,The difference in the diameter of the two pistons X 1 and x 2 is measured solely according to the static friction of the slide y ,
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE291179T |
Publications (1)
Publication Number | Publication Date |
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DE291709C true DE291709C (en) |
Family
ID=6066424
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT294062D Active DE294062C (en) | |||
DENDAT291709D Active DE291709C (en) | |||
DENDAT291708D Active DE291708C (en) | |||
DENDAT295275D Active DE295275C (en) | |||
DENDAT291179D Active DE291179C (en) |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT294062D Active DE294062C (en) |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT291708D Active DE291708C (en) | |||
DENDAT295275D Active DE295275C (en) | |||
DENDAT291179D Active DE291179C (en) |
Country Status (1)
Country | Link |
---|---|
DE (5) | DE291179C (en) |
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0
- DE DENDAT294062D patent/DE294062C/de active Active
- DE DENDAT291709D patent/DE291709C/de active Active
- DE DENDAT291708D patent/DE291708C/de active Active
- DE DENDAT295275D patent/DE295275C/de active Active
- DE DENDAT291179D patent/DE291179C/de active Active
Also Published As
Publication number | Publication date |
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DE294062C (en) | |
DE291179C (en) | |
DE291708C (en) | |
DE295275C (en) |
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