NO154082B - LEVEL ADJUSTMENT VALVE FOR LOADING VEHICLE AIR EQUIPMENT. - Google Patents

LEVEL ADJUSTMENT VALVE FOR LOADING VEHICLE AIR EQUIPMENT. Download PDF

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Publication number
NO154082B
NO154082B NO822847A NO822847A NO154082B NO 154082 B NO154082 B NO 154082B NO 822847 A NO822847 A NO 822847A NO 822847 A NO822847 A NO 822847A NO 154082 B NO154082 B NO 154082B
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NO
Norway
Prior art keywords
housing
valve
seat
connection
inlet valve
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NO822847A
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Norwegian (no)
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NO822847L (en
NO154082C (en
Inventor
Riet Thoeny
Niklaus Epp
Margrit Weidmann
Original Assignee
Oerlikon Buehrle Ag
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 Oerlikon Buehrle Ag filed Critical Oerlikon Buehrle Ag
Publication of NO822847L publication Critical patent/NO822847L/en
Publication of NO154082B publication Critical patent/NO154082B/en
Publication of NO154082C publication Critical patent/NO154082C/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052Pneumatic spring characteristics
    • B60G17/0523Regulating distributors or valves for pneumatic springs
    • B60G17/0525Height adjusting or levelling valves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

1. Level-regulating valve for load-dependent pneumatic suspension units in vehicles, with a double seat valve (15, 23, 35) arranged in a housing (20), which double-seat valve (15, 23, 35) connects an external pneumatic suspension bellows (5) to an external air-supply reservoir (2) via an inlet valve (15, 23) and to atomsphere via an outlet valve (15, 35), with the inlet valve seat (23) being designed in the shape of a sleeve and arranged axially adjustably in the housing (20), an a hollow actuating plunger (7 ; 24), which ist axially displaceable in the housing (20), having on one end the outlet valve seat (35), being connected via a follower (12, 25) to an actuating lever (6) and, with the actuating lever (6) in the neutral position, holding the double-seat valve (15, 23, 35) in the closed position, characterized in that the inlet valve seat (35) can be adjusted by a screw-in cover (21), which is arranged on the end face of the housing (20), and against a spring (28) supported on the housing, and that a connection (32) arranged on the housing (20) radially to the housing axis, a channel (34) made in the screw-in cover (21) and an annular groove (33) connecting the connection (32) and the channel (34) are available for connecting to the air-supply reservoir (2).

Description

Oppfinnelsen vedrører en niyåreguleringsventil- for lastavhengige luftfjæringsanlegg i kjøretøyer med en- som dobbeltseteventil utformet inn- og utløpsvéntil, hvorved en aksielt forskyvbar, hul betjeningsstøtstang har et utløpsventil-sete og styres av en betjeningsarm i avhengighet av nivå-stillingen. The invention relates to a new control valve for load-dependent air suspension systems in vehicles with a single or double seat valve designed inlet and outlet valve, whereby an axially displaceable, hollow operating support rod has an outlet valve seat and is controlled by an operating arm depending on the level position.

Nivåreguleringsventiler muliggjør en konstanthold-ing av vognkassenivået, uavhengig av belastningstilstanden for et kjøretøy, ved tilsvarende tilførsel og fjerning av luft-fra luftfjæringsbelger. Level control valves make it possible to keep the chassis level constant, regardless of the load condition of a vehicle, by corresponding supply and removal of air from the air suspension bellows.

Det er kjent en nivåreguleringsventil ifølge innled-ningen til krav 1, se fig. 1, ved hvilken den hule betjenings-stang og et styrestykke, som er forbundet med betjeningsarmen, er utformet adskilt. I dette styrestykke er det anordnet.en gjengestift med hvilken betjeningsstøtstangen•er innstillbar mot en fjær. Med en mutter kan denne stilling sikres. Inn-retningen tjener til å utjevne bearbeidelsestoleranse mellom innløpsventilsetet og nullpunktet for betjeningsarmen. A level control valve according to the introduction to claim 1 is known, see fig. 1, in which the hollow operating rod and a control piece, which is connected to the operating arm, are designed separately. In this control piece there is a threaded pin with which the operating push rod can be adjusted against a spring. This position can be secured with a nut. The in direction serves to equalize machining tolerance between the inlet valve seat and the zero point of the operating arm.

Ved denne kjente anordning er justeringen av av^ slutningsstillingen for dobbeltseteventilen i nullstilling for betjeningsarmen vanskelig å gjennomføre på grunn av innstillingen av gjengestiften og sikringen ved hjelp av mutteren i apparatet. With this known device, the adjustment of the shut-off position for the double seat valve in the zero position for the operating arm is difficult to carry out due to the setting of the threaded pin and the securing by means of the nut in the device.

Ytterligere nivåreguleringsventiler er kjent fra DE-OS 1949761 og GB-PS 895433. Begge disse skrifter viser en Further level control valves are known from DE-OS 1949761 and GB-PS 895433. Both of these documents show a

i aksial retning i huset innskrubar innsats, på hvilken det på den ene side kan anbringes innløpssetet og på den annen side tilslutningen for forbindelsesledningen til forrådsluftbeholderen. Justeringen blir her nu vanskeliggjort på grunn av at insert that can be screwed into the housing axially, on which the inlet seat can be placed on the one hand and the connection for the connecting line to the supply air container on the other. The adjustment is now made more difficult due to the fact that

innstillingen av innløpssetet og tilslutningen av lufttilførse-len hindrer hverandre innbyrdes, spesielt også på grunn av den benyttede kontramutter. the setting of the inlet seat and the connection of the air supply prevent each other, especially also because of the counter nut used.

Oppfinnelsen, som er kjennetegnet ved det som er angitt i kravene, løser den oppgave å tilveiebringe en enkel justering av dobbeltseteventilen utenfra, hvorved dette i størst mulig grad skal kunne gjennomføres uten løsgjøring av forbindelsestilkoblinger til forrådsluftbeholderen. The invention, which is characterized by what is stated in the requirements, solves the task of providing a simple adjustment of the double seat valve from the outside, whereby this should be possible to the greatest extent possible without loosening the connection connections to the supply air container.

Oppfinnelsen er i det følgende nærmere forklart ved hjelp av et utførelseseksempel som er fremstilt på teg-ningen, som viser: fig. 1 en nivåreguleringsventil av kjent type i et luftfjæringsanlegg, fig. 2 en nivåreguleringsventil ifølge oppfinnelsen i skjematisk fremstilling og i snitt I-l, fig. 3 et oppriss ifølge snittet II - II. Virkemåten for den kjentenivåreguleringsventil blir i det følgende nærmere forklart på grunnlag av fig. 1. Ved økende belastning beveger vognkassen 3 seg med den dertil festede nivåreguleringsventil 1 i retning nedover. Derved blir den med kjøretøyunderstellet 4 forbundne betjeningsarm 6 beveget fra sin horisontale stilling. Den i sentrum 13 av en stedsfast på nivåreguleringsventilen 1 dreibart opplagret medtager 12, stiplet inntegnet, leddforbundne betjeningsarm 6 forskyver over medtagerstiften 14 styrestykket 9 oppover og åpner dermed over gjengestiften 10 og støtstangen 7 innløps-ventilen 15. Trykkluft fra forrådsluftbeholderen 2 strømmer nå over tilbakeslagsventilen 16 og innløpsventilen 15 til luftfjæringsbelgen 5 i så lang tid til ved hevning av vogn-kassenvået betjeningsarmen 6 når sin.horisontale stilling og innløpsventilen 15 sin avslutningsstilling. Ved lossing av vognkassen 3 beveger betjeningsarmen 6 og dermed styrestykket 9 i nivåreguleringsventilen 1 seg nedover, senker støtstangen 7 og åpner dermed utløpsventilen ved den øvre ende av støt-stangen 7. Derved strømmer trykkluft fra luftfjæringsbelgen 5 over den hule støtstang 7 og de tilstedeværende åpninger i styrestykket 9 og i det nedre deksel til atmosfæren så lenge til betjeningsarmen 6 igjen har nådd sin horisontale stilling. In the following, the invention is explained in more detail with the help of an embodiment which is shown in the drawing, which shows: fig. 1 a level control valve of a known type in an air suspension system, fig. 2 a level control valve according to the invention in schematic representation and in section I-1, fig. 3 an elevation according to section II - II. The operation of the known level control valve is explained in more detail in the following on the basis of fig. 1. When the load increases, the carriage body 3 moves downwards with the level control valve 1 attached to it. Thereby, the operating arm 6 connected to the vehicle chassis 4 is moved from its horizontal position. The in the center 13 of a fixed in place on the level control valve 1 rotatably supported follower 12, dashed line, articulated operating arm 6 over the follower pin 14 displaces the control piece 9 upwards and thus opens the inlet valve 15 above the threaded pin 10 and the push rod 7. Compressed air from the supply air container 2 now flows over the non-return valve 16 and the inlet valve 15 to the air suspension bellows 5 for such a long time until, when the carriage body is raised, the operating arm 6 reaches its horizontal position and the inlet valve 15 its closing position. When unloading the wagon body 3, the operating arm 6 and thus the control piece 9 in the level control valve 1 moves downwards, lowers the shock rod 7 and thus opens the outlet valve at the upper end of the shock rod 7. Compressed air from the air suspension bellows 5 thereby flows over the hollow shock rod 7 and the openings present in the control piece 9 and in the lower cover to the atmosphere until the operating arm 6 has again reached its horizontal position.

Nivåreguleringsventilen ifølge oppfinnelsen, og som er vist på fig. 2 og 3, omfatter et hus 20, et innskruingsdeksel 21, som har en indre sekskant 22, et ventilsete for en tilbakeslagsventil 16 og luftkanaler, et i huset aksielt forskyvbart innløpsventilsete 23, en hul betjeningsstøt-stang 24 og en i huset 20 dreibart opplagret medtager 25, se fig. 3. Innløpsventilsetet 23 er utformet hylseformet og inneholder i sitt indre et luf, tkammer . 26, som på den. ene side er begrenset av ventiltallerkenen til tilbakeslagsventilen 16 og på den annen side av ventiltallerkenen for innløpsven-tilen 23. Disse to ventiltallerkner er belastet av en fjær The level control valve according to the invention, which is shown in fig. 2 and 3, comprises a housing 20, a screw-in cover 21, which has an internal hexagon 22, a valve seat for a non-return valve 16 and air channels, an inlet valve seat 23 axially displaceable in the housing, a hollow operating push rod 24 and a rotatably supported in the housing 20 includes 25, see fig. 3. The inlet valve seat 23 is designed sleeve-shaped and contains an air chamber in its interior. 26, as on it. one side is limited by the valve plate of the non-return valve 16 and on the other side by the valve plate of the inlet valve 23. These two valve plates are loaded by a spring

27. Innløpsventilsetet 23 blir ved hjelp av en fjær 28, som fortrinnsvis er utformet som tallerkenfjærpakke, presset mot innskruingsdekslet 21. Forbindelseskanaler 29 i innløpsven-tilsetet 23 fører til et forbindelseskammer 30, i hvilket også fjæren 28 er anordnet, og til en tilslutning 31 i huset 20 for en forbindelsesledning til en luftfjæringsbelg. En for en forbindelsesledning til forrådsluftbeholderen beregnet, på siden av huset 20 anordnet tilslutning 32 fører til et.ringformet spor 33 i huset 20, i hvilket det munner en kanal 34 som fører til tilbakeslagsventilen 16. Den hule betjenigns-støtstang 24 har ved sin øvre ende et utløpsventilsete 35 og 27. The inlet valve seat 23 is pressed against the screw-in cover 21 by means of a spring 28, which is preferably designed as a disc spring pack. Connection channels 29 in the inlet valve seat 23 lead to a connection chamber 30, in which the spring 28 is also arranged, and to a connection 31 in the housing 20 for a connecting line to an air suspension bellows. A connection 32 arranged on the side of the housing 20 intended for a connection line to the supply air container leads to an annular groove 33 in the housing 20, into which a channel 34 opens leading to the non-return valve 16. The hollow operating push rod 24 has at its upper end an outlet valve seat 35 and

ved sin nedre stempelformede del et på tvers av husaksen for-løpende føringsspor 36. Den stempelformede del av betjenings-støtstangen 24 er ført aksielt forskyvbart i et kammer 37 som har et atmosfæretrykk. Utløpsforbindelsen blir tilveiebragt over en sentralboring 38 i betjeningsstøtstangen 24 og en åpning 39 i huset 20. at its lower piston-shaped part a guide groove 36 running across the housing axis. The piston-shaped part of the operating push rod 24 is guided axially displaceably in a chamber 37 which has an atmospheric pressure. The outlet connection is provided via a central bore 38 in the operating support rod 24 and an opening 39 in the housing 20.

Som det spesielt fremgår av fig. 3, er den i huset 20 stedfaste og dreibart opplagrede medtager 25 over en med-tagerstift 14, som er ført i føringssporet 36, forbundet med betjeningsstøtstangen 24. Likeledes er det på medtageren 25 festet betjeningshevarmen 6. I og for seg er det tilstrekke-lig hvis betjeningsarmen 6 er anordnet i medtageren 25, f. eks. opplagret forskyvbart. As can be seen in particular from fig. 3, the stationary and rotatably supported follower 25 in the housing 20 is connected to the operating push rod 24 over a follower pin 14, which is guided in the guide groove 36. Likewise, the operating lever 6 is attached to the follower 25. In and of itself, it is sufficient eg if the operating arm 6 is arranged in the receiver 25, e.g. stored displaceably.

Virkemåten for nivåreguleringsventilen ifølge oppfinnelsen i forbindelse med- luftfjæringsanlegg er beskrevet på fig. 1. The operation of the level control valve according to the invention in connection with air suspension systems is described in fig. 1.

De ved hjelp av oppfinnelsen oppnådde fordeler må The advantages obtained by means of the invention must

i det vesentlige ses deri at bearbeidelsestoleransene mellom et sentrum 13 i medtageren 25, som danner det husfaste dreie-punkt for betjeningshevarmen 6, og avslutningsstillingen for det som dobbeltseteventil utformede inn- 23 og utløpsventil-sete 35 ved hjelp av det i huset aksielt forskyvbare innløps- In essence, it can be seen that the machining tolerances between a center 13 in the receiver 25, which forms the housing-fixed pivot point for the operating lever 6, and the end position for the inlet 23 designed as a double seat valve and the outlet valve seat 35 by means of the axially displaceable inlet in the housing -

ventilsete 23 på enkel måte kan utjeynes og spesielt at den tilsvarende nøyaktige innstilling er innstillbar og faststill-bar lett tilgjengelig utenfra med et innskruingsdeksel 21 mot fjæren 28. Med en i den indre sekskant 22 innsatt sekskant-nøkkel kan nu uten problemer betjeningsarmens 6 nullpunkt i avslutningsstilling for dobbeltseteventilen innjusteres utenfra. Særlig fordelaktig er anvendelsen av en tallerkenfjærpakke som fjær 28, hvis store fjærkraft virker som sikrings-element for den innjusterte stilling. I og for seg kan inn-løpsventilsetet 23 og gjengedelen for innskruingsdekslet 21 være utført i ett stykke, hvorved det for innstillingssikring f. eks. benyttes fjæren 28 eller andre sikringsmidler. valve seat 23 can be easily adjusted and, in particular, that the corresponding exact setting is adjustable and easily accessible from the outside with a screw-in cover 21 against the spring 28. With a hexagon key inserted in the inner hexagon 22, the zero point of the operating arm 6 can now be closing position for the double seat valve is adjusted from the outside. Particularly advantageous is the use of a disk spring package such as spring 28, whose large spring force acts as a securing element for the adjusted position. In and of itself, the inlet valve seat 23 and the threaded part for the screw-in cover 21 can be made in one piece, whereby for setting protection, e.g. the spring 28 or other securing means is used.

Claims (2)

1. Nivåreguleringsventil for belastningavhengige luftfjæringsanlegg i kjøretøy, med en i et hus (20) anordnet dobbeltseteventil (15,23,35), som forbinder en ekstern luftfjæringsbelg (5) over en innløpsventil (15,23) med en ekstern forrådsluft-beholder (2) og over en utløpsventil (15,35) med atmosfæren, hvorved innløpsventilsetet (23) er utformet hylseformet og er anordnet aksielt innstillbart i huset (20) og som oppviser en i huset (20) aksielt forskyvbar, hul betjeningsstøtstang (7,24) på den ene enden av utløpsventilsetet (35) og som over en medtager (12,25) er forbundet med en betjeningshevearm (6) og hvor dobbeltseteventilen (15,23,35) ved nullstilling holder betjeningshevearmen (6) i avslutningsstilling, karakterisert ved at innløpsventilsetet (2 3) er innstillbart ved hjelp av et på endesiden av huset (20) anordnet innskruingsdeksel (21) og mot en fjær (28) som er avstøttet mot hussiden, og at en radielt til husaksen på huset (20) anordnet tilkobling (32), en i innskruings-dekselet (21) anbragt kanal (34) og et ringformet spor (31) som forbinder tilkoblingen (32) og kanalen (34) er tilstede for forbindelse til forrådsluftbeholderen (2).1. Level control valve for load-dependent air suspension systems in vehicles, with a double seat valve (15,23,35) arranged in a housing (20), which connects an external air suspension bellows (5) over an inlet valve (15,23) with an external supply air container ( 2) and over an outlet valve (15,35) with the atmosphere, whereby the inlet valve seat (23) is designed sleeve-shaped and is arranged axially adjustable in the housing (20) and which exhibits an axially displaceable, hollow operating support rod (7,24) in the housing (20) ) on one end of the outlet valve seat (35) and which is connected via a carrier (12,25) to an operating lift arm (6) and where the double seat valve (15,23,35) holds the operating lift arm (6) in the end position in the zero position, characterized by that the inlet valve seat (2 3) is adjustable by means of a screw-in cover (21) arranged on the end side of the housing (20) and against a spring (28) which is supported against the housing side, and that a connection arranged radially to the housing axis on the housing (20) (32), one in screw-in cover a (21) arranged channel (34) and an annular groove (31) connecting the connection (32) and the channel (34) are present for connection to the supply air container (2). 2. Nivåreguleringsventil ifølge krav 1, karakterisert ved at fjæren (28) er dannet av minst én tallerkenfjær.2. Level control valve according to claim 1, characterized in that the spring (28) is formed by at least one disk spring.
NO822847A 1981-09-30 1982-08-20 LEVEL ADJUSTMENT VALVE FOR LOADING VEHICLE AIR EQUIPMENT. NO154082C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH628781 1981-09-30

Publications (3)

Publication Number Publication Date
NO822847L NO822847L (en) 1983-04-05
NO154082B true NO154082B (en) 1986-04-07
NO154082C NO154082C (en) 1986-07-16

Family

ID=4307176

Family Applications (1)

Application Number Title Priority Date Filing Date
NO822847A NO154082C (en) 1981-09-30 1982-08-20 LEVEL ADJUSTMENT VALVE FOR LOADING VEHICLE AIR EQUIPMENT.

Country Status (5)

Country Link
EP (1) EP0075969B1 (en)
AT (1) ATE16159T1 (en)
DE (1) DE3267031D1 (en)
ES (1) ES8307611A1 (en)
NO (1) NO154082C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2573506B1 (en) * 1984-11-16 1988-07-08 Belles Ondes Forges LEVELING VALVE FOR CONTROLLING THE HOLDING OF A FIRST ELEMENT IN A POSITION DETERMINED IN RELATION TO A SECOND ELEMENT, AND APPLICATION OF SUCH A VALVE TO A PNEUMATIC CUSHION SUSPENSION
US6402128B1 (en) 2000-01-31 2002-06-11 The Goodyear Tire And Rubber Company Air spring with lateral restraint and axial control
DE10113199B4 (en) * 2001-03-19 2013-06-20 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Level control valve for rail vehicles
ES2275777T3 (en) * 2002-06-03 2007-06-16 Contitech Luftfedersysteme Gmbh HYDRAULIC SPRING0 ACTING AS PRIMARY SPRING IN RAILWAY VEHICLES.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967064A (en) * 1957-09-13 1961-01-03 Bendix Westinghouse Automotive Load control valve for vehicle air springs
GB895433A (en) * 1959-11-11 1962-05-02 Westinghouse Brake & Signal Improvements relating to vehicle air springs
FR1298221A (en) * 1960-09-27 1962-07-06 Magneti Marelli Spa Servo-controlled compensator for regulating air shock absorbers in vehicle air suspensions
US3071394A (en) * 1960-10-21 1963-01-01 Weatherhead Co Control valve for vehicle suspension
DE1949761A1 (en) * 1969-10-02 1971-06-09 Graubremse Gmbh Air suspension for vehicles
GB1418471A (en) * 1972-03-23 1975-12-24 Dunlop Ltd Fluid flow control valve assemblies
DE2532616A1 (en) * 1975-07-22 1977-02-03 Fichtel & Sachs Ag Combined control valve for axle hydraulic dampers - has separate non return valves for each side with centre control preventing uneven deflections
US4245854A (en) * 1978-04-17 1981-01-20 Curnutt Charles R High pressure air suspension system
DE3013305C2 (en) * 1980-04-05 1983-01-27 Graubremse Gmbh, 6900 Heidelberg Level control valve to automatically keep the chassis height of a vehicle constant

Also Published As

Publication number Publication date
ES515503A0 (en) 1983-08-01
NO822847L (en) 1983-04-05
ES8307611A1 (en) 1983-08-01
ATE16159T1 (en) 1985-11-15
EP0075969B1 (en) 1985-10-23
NO154082C (en) 1986-07-16
DE3267031D1 (en) 1985-11-28
EP0075969A1 (en) 1983-04-06

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