EP2619056A1 - Soupape de commande pneumatique pour soumettre un cylindre de frein à l'action régulée d'air comprimé - Google Patents

Soupape de commande pneumatique pour soumettre un cylindre de frein à l'action régulée d'air comprimé

Info

Publication number
EP2619056A1
EP2619056A1 EP11757272.7A EP11757272A EP2619056A1 EP 2619056 A1 EP2619056 A1 EP 2619056A1 EP 11757272 A EP11757272 A EP 11757272A EP 2619056 A1 EP2619056 A1 EP 2619056A1
Authority
EP
European Patent Office
Prior art keywords
compressed air
control valve
pneumatic control
valve
throttle
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.)
Withdrawn
Application number
EP11757272.7A
Other languages
German (de)
English (en)
Inventor
Simon Czypionka
Martin Heller
Michael Krusche
Vladimir Krylov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Publication of EP2619056A1 publication Critical patent/EP2619056A1/fr
Withdrawn legal-status Critical Current

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
    • B60T13/24—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
    • B60T13/36—Compressed-air systems direct, i.e. brakes applied directly by compressed air
    • B60T13/365—Compressed-air systems direct, i.e. brakes applied directly by compressed air 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
    • B60T15/184—Railway control or brake valves
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/48—Other control devices or valves characterised by definite functions for filling reservoirs

Definitions

  • Pneumatic control valve for regulated
  • Compressed air is applied to a brake cylinder
  • the present invention relates to a pneumatic control valve for controlled
  • Compressed air supply of a connectable via a compressed air connection C Compressed air supply of a connectable via a compressed air connection C.
  • Brake cylinder with at least one integrated seat valve arrangement for loading or bleeding the brake cylinder in accordance with the pressure in a connectable by compressed air connection L main air line, with additional valve means for controlled
  • Refilling a vorrats Kunststoff disposers connectable by a compressed air connection R are integrated during the bleeding time of the brake cylinder.
  • the field of application of the present invention extends to rail vehicle construction.
  • pneumatic control valves of interest here are used as actuators for the brake cylinder filling.
  • Actuator also controls the filling of the auxiliary air tank or storage air tank and forms in its main function in accordance with the pressure in the main air line HL of the
  • control valve forms the central brake control of each indirectly acting automatic Einttingbuch Kunststoffbremse to control depending on the induced pressure in the main air line L, the loading or venting of the connected brake cylinder directly or as a pilot pressure for a downstream main part.
  • Brake cylinders are manufactured.
  • control valve Within the control valve is a two-sided pressurizable control piston, which is the main component of a piston set, with the help of different effective areas for the main air line pressure L, the brake cylinder pressure C and a
  • Control chamber pressure A generates different actuating forces to actuate a double seat valve arrangement for venting or bleeding the connected brake cylinder.
  • the compressed air brake With the pneumatic control valve, the compressed air brake is brought to the operating pressure via the main air line HL when filling with compressed air.
  • the filling completion is achieved when the pressures L, R and A have the same pressure level.
  • the pressure in the main air line HL is lowered.
  • the pressure constellation on the piston set this is set in motion as soon as the force of an integrated compression spring is overcome.
  • the multiresolution control valve assumes the braking position. This initially closes the first connection on the double seat valve for the vent from the compressed air port C of the brake cylinder and then opens the second
  • Compressed air connection R is connected via the compressed air connection C to the brake cylinder, whereby the brake cylinder pressure builds up in the brake cylinder.
  • the pressure in the main air line HL is increased.
  • the piston set moves to take the release position.
  • the brake cylinder pressure breaks down until a final position is taken.
  • compressed air flows from the main air line HL via an integrated check valve in the direction of compressed air connection L of the main air line to the reservoir air tank to refill this, so that the pneumatic control valve is ready for a new brake.
  • Main air line HL in the rear tension part This has an extension of the release time of the air brake and a slower filling of the reservoir tank in the rear tension part result. Particularly noticeable is the compressed air consumption by the supply air tank at a Guassin, so a pulsed impingement with compressed air.
  • the supply air tank in the front part of the train are partially overcharged and the Greps, etc.
  • the invention includes the technical teaching that the additional valve means of the pneumatic control valve comprise a spring-reset throttle valve, which are inserted into a valve R from the internal port R-channel out to a
  • the advantage of the solution according to the invention lies in the fact that such a spring-reset throttle valve, which is constructed from a few individual parts, can be integrated space-saving in the region of the R channel of the control valve.
  • a screw plug is provided in the region of the compressed air connection R for the supply air tank, which is provided by the
  • inventive reseated throttle valve can be easily replaced to the pneumatic control valve to the function of a controlled
  • the spring-return throttle valve actuates the main air line pressure, which flows in the direction of Vorrats Kunststoff employer Dmck Kunststoffan gleich R of the pneumatic control valve, an integrated piston against the force of an associated return spring such that the piston assumes a minimum throttle cross-section in the extended basic position and in the retracted Actuating position sets a maximum throttle cross-section.
  • the operation of the spring-return throttle valve is based on a
  • Throttle cross-section safe With increasing pressure, the piston reaches the retracted operating position, in which the throttle cross-section is maximum. To realize this functionality is proposed to form a coaxial throttle pin directly on the piston, which generates the different throttle cross-sections with a stationary passage bore surrounding it as a function of the piston position.
  • the minimum throttle cross-section can be produced by a circular segment-like recess in the middle region of the throttle pin, which can be introduced, for example, in the form of a milling notch or the like.
  • the maximum throttle cross-section can be generated via the circular outer cross-section of the throttle pin, which forms an annular gap with the passage bore surrounding it, and a smaller one
  • Flow cross-section has as the flow cross-section produced in the region of the circular segment-like recess on the throttle pin. In principle sinks with the stroke of the piston, the recess on the throttle pin in the passage bore.
  • Brake pressure can still reach the prescribed pressure value in a follow-up braking.
  • Control valve is built this shared.
  • a main part for brake pressure generation and a line part for pilot control is present, which are flanged to a common valve carrier with integrated compressed air connections R, C, L.
  • the line part to an integrated control piston which is acted upon from one side via a first control chamber through the main line pressure L and from the opposite side via a second control chamber with a reference pressure to a piston valve with a first seat valve assembly, a pilot pressure for the Body to produce.
  • the main part has a relay valve function and switches via an integrated second seat valve assembly fed by the reservoir pressure, the brake cylinder pressure.
  • additional compressed-air brake-specific additional functions are integrated in the line section and in the main section.
  • the throttle valve according to the invention for the controlled refilling of the storage air tank is designed as a cartridge-like Einschraubventil.
  • the throttle valve can be screwed into the housing of the main part instead of one in the interest here pneumatic control valves otherwise arranged screw plug.
  • a pneumatic pilot valve can be retrofitted with the controlled refilling function according to the invention.
  • Figure 1 is a partial longitudinal sectional view of a split pneumatic
  • Figure 2 is a longitudinal section of a spring-loaded throttle valve as a cartridge-like
  • Figure 3 is a graphical representation of the time course of refilling a
  • the pneumatic control valve for the regulated pressurization of a - not shown - brake cylinder of a pneumatic brake system for a rail vehicle divided and consists in principle of a main part 1 and a Conduit part 2, which are both flanged to a central valve support member.
  • the main part 1 essentially serves to generate brake pressure and exerts this switching function via a seat valve arrangement integrated therein.
  • the generation of the brake pressure is fed from a compressed air connection R, which establishes the connection to a supply air reservoir.
  • the brake cylinder is arranged on a compressed air connection C on the valve support part 3.
  • the main part 1 is operated via a pneumatic pilot control, which is connected by the line part 2 via a seat valve arrangement 5 integrated therein.
  • Poppet valve assembly 5 is actuated via a control piston 6 which is acted upon from one side via a first control chamber 7 by a main air line pressure, which is supplied from a - not shown - main air line HL coming via a compressed air connection L of the valve carrier 3. From the opposite side of the control piston 6 is acted upon via a second control chamber 8 with a reference pressure.
  • a screw plug 9 is screwed, which closes a valve-internal R-channel 11 from the atmosphere.
  • the aforementioned closure screw 9 is exchangeable against a spring-restored throttle valve 10 illustrated in FIG. 2.
  • the throttle valve 10 is designed as a cartridge-like valve
  • the spring-return throttle valve 10 serves as an additional valve means a controlled refilling of the supply air tank during the venting time of the brake cylinder, ie during the release of the compressed air brake.
  • an axially adjustable piston 12 is inserted into the spring-return throttle valve 10, which is actuated against the force of a restoring spring 13 by the compressed air flowing in the direction of supply air reservoir.
  • the piston 12 takes in the extended basic position shown here, a maximum throttle cross section, whereas in the retracted operating position, a minimum throttle cross section is set.
  • a coaxially integrally formed on the piston 12 throttle pin 14 in cooperation with a throttle pin 14 surrounding stationary passage bore 15 in response to the piston position.
  • the stationary passage bore 15 is introduced into the screw housing 16 of the pneumatic control valve on the bottom side.
  • the throttle pin 14 has a circular segment-like recess 17. The minimum throttle cross-section, however, by the interaction of the circular
  • the refilling behavior is variable for the storage air tank via a screwed in a screw 18 adjusting screw 19.
  • the adjusting screw 19 acts on the opposite end of the piston 12 of the
  • FIG. 3 the pressure curve for the refilling of the supply air tank along the time jet t is illustrated. From a pressure value of 4.5 bar, throttling begins at the relevant characteristic I. From this event, the further refilling of the storage tank takes place more slowly up to the maximum value of 5.5 bar. If the
  • the switching value for the throttling can be selected depending on the requirement.
  • the characteristic II Schematically represents the course of the corresponding effective cross section of the valve.
  • a fast filling takes place with an effective cross section of about 1.3 mm; throttled filling with a cross section of approx. 0.7mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

L'invention concerne une soupape de commande pneumatique pour soumettre un cylindre de frein raccordable par l'intermédiaire d'un raccord d'air comprimé (C) à l'action régulée d'air comprimé, comprenant au moins un système intégré de soupape à siège (4, 5) pour ventiler et purger le cylindre de frein en fonction de la pression dans un conduit d'air principal raccordable par le raccord d'air comprimé (L), des moyens de soupape supplémentaires étant intégrés pour le remplissage contrôlé d'un réservoir d'air raccordable par l'intermédiaire d'un raccord d'air comprimé (R) pendant le temps de purge du cylindre de frein, les moyens de soupape supplémentaires comprenant une soupape d'étranglement (10) rappelée par ressort, qui est insérée dans un canal R (11) intérieur à la soupape et partant du raccord d'air comprimé (R), pour garantir un remplissage étranglé du réservoir d'air pendant au moins une partie du temps de purge du cylindre de frein.
EP11757272.7A 2010-09-20 2011-09-12 Soupape de commande pneumatique pour soumettre un cylindre de frein à l'action régulée d'air comprimé Withdrawn EP2619056A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EA201001378A EA019526B1 (ru) 2010-09-20 2010-09-20 Пневматический воздухораспределитель для регулируемой подачи сжатого воздуха в тормозной цилиндр
PCT/EP2011/065732 WO2012038285A1 (fr) 2010-09-20 2011-09-12 Soupape de commande pneumatique pour soumettre un cylindre de frein à l'action régulée d'air comprimé

Publications (1)

Publication Number Publication Date
EP2619056A1 true EP2619056A1 (fr) 2013-07-31

Family

ID=44651753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11757272.7A Withdrawn EP2619056A1 (fr) 2010-09-20 2011-09-12 Soupape de commande pneumatique pour soumettre un cylindre de frein à l'action régulée d'air comprimé

Country Status (4)

Country Link
EP (1) EP2619056A1 (fr)
EA (1) EA019526B1 (fr)
RU (1) RU107739U1 (fr)
WO (1) WO2012038285A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011112552B4 (de) * 2011-09-06 2020-11-26 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Steuerventil für selbsttätige Druckluftbremsen mit Gleitführungsmitteln
DE102013009973A1 (de) * 2013-06-14 2014-12-18 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Ventilanordnung zur gesteuerten Befüllung eines Reservebehälters bei einem pneumatischen Bremssystem eines Schienenfahrzeuges
RU200261U1 (ru) * 2020-06-18 2020-10-14 Акционерное общество «Ритм» Тверское производство тормозной аппаратуры (АО «Ритм» ТПТА) Магистральная часть воздухораспределителя тормозной системы железнодорожного транспортного средства

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB714999A (en) * 1951-12-03 1954-09-08 Kovolis An air distributor for railway brakes
US3701570A (en) * 1970-06-15 1972-10-31 Gertrud Reitz Single release air brake for railroad vehicles
SU510614A1 (ru) * 1974-10-08 1976-04-15 Предприятие П/Я В-8103 Дроссельный клапан
DE4309386C2 (de) * 1993-03-23 1996-12-19 Knorr Bremse Ag Steuerventil für indirekt wirkende Druckluftbremse von Schienenfahrzeugen
US7543796B2 (en) * 2006-07-14 2009-06-09 Wabtec Holding Corporation High flow calibration test point

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2012038285A1 *

Also Published As

Publication number Publication date
WO2012038285A1 (fr) 2012-03-29
RU107739U1 (ru) 2011-08-27
EA019526B1 (ru) 2014-04-30
EA201001378A1 (ru) 2012-02-28

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