EP1778508A1 - Dispositif de suspenson - Google Patents

Dispositif de suspenson

Info

Publication number
EP1778508A1
EP1778508A1 EP05771915A EP05771915A EP1778508A1 EP 1778508 A1 EP1778508 A1 EP 1778508A1 EP 05771915 A EP05771915 A EP 05771915A EP 05771915 A EP05771915 A EP 05771915A EP 1778508 A1 EP1778508 A1 EP 1778508A1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
suspension
suspension device
load
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.)
Ceased
Application number
EP05771915A
Other languages
German (de)
English (en)
Inventor
Heinz-Peter Huth
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.)
Hydac System GmbH
Original Assignee
Hydac System 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 Hydac System GmbH filed Critical Hydac System GmbH
Publication of EP1778508A1 publication Critical patent/EP1778508A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient 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
    • B60G17/015—Resilient 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 the regulating means comprising electric or electronic elements
    • B60G17/0152—Resilient 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 the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient 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
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/056—Regulating distributors or valves for hydropneumatic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient 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
    • B60G17/06—Characteristics of dampers, e.g. mechanical dampers
    • B60G17/08—Characteristics of fluid dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/154—Fluid spring with an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/41—Fluid actuator
    • B60G2202/414—Fluid actuator using electrohydraulic valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/08—Agricultural vehicles
    • B60G2300/082—Tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/25—Stroke; Height; Displacement
    • B60G2400/252—Stroke; Height; Displacement vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/50—Pressure
    • B60G2400/51—Pressure in suspension unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/50—Pressure
    • B60G2400/51—Pressure in suspension unit
    • B60G2400/518—Pressure in suspension unit in damper
    • B60G2400/5182—Fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/10—Damping action or damper
    • B60G2500/11—Damping valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance

Definitions

  • the invention relates to a suspension device, in particular for Fahrzeu ⁇ ge with changing load conditions, with
  • At least one suspension cylinder each having pressure chambers, such as a ring and a piston chamber, a load-sensing system for generating pressure,
  • DE 4242 448 C1 discloses a hydro-pneumatic suspension device which relates to vehicles with high load ratios, in particular for tractors with attachment means for attachments and load-sensing pumps for generating pressure, the annular chambers of the suspension cylinders also being pressurized and verbun ⁇ with a hydraulic accumulator are the.
  • the known solution aims at improving earlier arrangements of this type, which have control mechanisms which are provided by constant-pressure systems. need to be fed, and in which the use of a load-sensing pump brings no success, as this would always promote high pressure. The latter also means that the described systems permanently consume energy.
  • the known solution proposes to provide energy savings and the possibility of using a load-sensing pump in that the annular space of the respective Federungs ⁇ cylinder is supplied via a 3-way pressure control valve with pressure, and provided a level control device with a valve device is the short-term up or down only in static load changes and in the otherwise assumed rest position makes all control lines and supply lines depressurized, the piston and annular chambers are hermetically sealed off by way of unlockable return check valves.
  • it is necessary to control the pressure control valve hydraulically and, moreover, the pressure in the annular spaces of the suspension cylinder is adjusted depending on their pressure conditions on the piston side, including conventional switching valves are used for the level control.
  • Pressure control valve to use additional switching valves, so that in principle the pressure setting on the annulus side of the suspension cylinder and the level control are functionally separated. Furthermore, the possibilities are possible to adjust the ring-side pressure of the suspension cylinders to different pressure levels in order to provide different suspension characteristics.
  • the load on the piston side and the wheel sets are arranged with wheel axles on the rod side of the respective suspension cylinder.
  • the pressure on the piston side is determined by the load and the pressure in the annulus.
  • the position of the proportional pressure control valve which may also be a proportional pressure reducing valve, is not bound to the rod side of the damping cylinder, but rather the position is determined by the pressure chamber, which is not acted upon directly by the load.
  • the solution according to the invention could therefore also be used in a conspicuous suspension design, in which the load is seated on the rod side, and the wheels on the piston side are comparable.
  • the pressure setting for the level control Aus ⁇ finally takes place on the respective ring side of the suspension cylinder.
  • the suspension device according to the invention applies in particular to the use in vehicles, the main applications are in heavy duty vehicles such as farm tractors, trucks or derglei ⁇ Chen.
  • the suspension device according to the invention according to the figure has two suspension cylinders 10, 12, each pressure chambers as a Annulus 14 and a piston chamber 16 have.
  • the load on the piston side should thus rest on the side of the piston chamber 16 of the respective suspension cylinder 10, 12, and the wheels and the axes are arranged on the rod side of the suspension cylinder 10, 12, thus facing the annular space side 14
  • the device is provided with a load-sensing system, designated as a whole by 18, which serves to generate pressure and which is reproduced only symbolically in the figure with a control point 20.
  • the load-sensing system is connected to a control device not shown, for example in the form of a computer with appropriate data logic.
  • two main branches 22, 24 forming supply lines are present between said spaces 14, 16 and a pump P and a tank port T.
  • a valve 26, 28 is connected of which at least one valve 26 is a pressure control valve, in particular in the form of a Proportio- nal horrregelventiles or pressure regulator valve.
  • a pressure setting for the respective predeterminable pressure chamber of the suspension cylinders 10, 12 is possible via the proportional pressure control valve 26.
  • the pressure regulating valve 26 can be actuated electrically by means of the already mentioned control device and, to that extent, has an attachment point 30.
  • the pressure setting for the respective predeterminable pressure chamber 14, 16 is preferably for those who is not directly exposed to a load; In the present embodiment, therefore, the pressure setting for the level control takes place exclusively on the respective ring side (annular space 14) of the suspension cylinder 10, 12.
  • a position measuring system 32 of conventional design which also has a connection point 34 in order to provide such measurement data to the control device, not shown.
  • the data of the position measuring system 32 are processed by the control device for the load-sensing system 18, which controls a non-illustrated control pump for pressure generation for the Federungsvor ⁇ direction, which is connected to the pump port P.
  • a switching valve of conventional design is switched, in particular in the form of a 3/2-way valve 28.
  • a shuttle valve 38 in particular Kugel Touch ⁇ valve switched.
  • the shuttle valve 38 is in turn connected to the output side of the load sensing system 18 and acts on the other two pilot-operated check valves 40, 42, which are provided in the manner of controllable 2/2-way valves in their open position with a throttle.
  • a pressure sensor DA is arranged in the further main branch 24 leading to the piston chamber 16 of the respective spring cylinder 10, 12. Furthermore, the piston chambers 16 and the annular spaces 14 of the respective suspension cylinders 10, 12 are connected to one another in a fluid-conducting manner, wherein in each case a hydraulic accumulator 46, 48 is connected in the pertinent connection. Between the two main branches 22, 24 and secured by two check valves 50, 52 is a D jerk limiting ungsventi I 54 connected, which is connected to the tank port T.
  • the respective suspension cylinder 10, 12 should always be in Mit ⁇ ten Scheme with its piston rod unit to have in such a way in both directions the full input and Ausfederweg.
  • the intelligence of the controller recognizes departing deviations, on the data toge ⁇ from the measuring system 32. If, for example, the axle load for the suspension cylinders 10, 12 is increased, the cylinders move in accordingly and in order to counteract this, a fluid, in particular hydraulic medium (oil), has to be brought into the respective piston chamber 16 of the suspension cylinders 10, 12.
  • the valve 26 is driven to the pressure that is needed and at the same time the 3/2-way switching valve 28 is switched. In this way, an actuation of the shuttle valve 38 is possible and then supplies the pressure to the load-sensing system 28.
  • the load pressure in the connection between the valve 28 and valve 38 corresponds to the piston-side pressure for the suspension cylinders 10, 12th
  • the shuttle valve 38 adjusts itself with regard to the pressure difference that the highest load pressure via the load-sensing system 28 delivered to the control pump, not shown which then goes to the control pressure. Since the required pressure is now present at the pump connection P, the volume flow connected thereto is sent to the piston side of the suspension cylinders 10, 12 via the 3/2-way switching valve 28. This happens until the control electronics or control device detects that the piston rod unit of the suspension cylinders 10, 12 are again in the middle position, with the result that both valves 26, 28 are de-energized and the suspension device is then defined in FIG a central position for the suspension cylinders 10, 12 set.
  • the load is reduced to the suspension cylinder 10, 12, with the result that this extension and in the respective Kolben ⁇ chamber 16 and the hydraulic accumulator 48 to drain oil, which in the state of Technology usually happens via other switching valves.
  • the purging operation likewise takes place via the pressure regulating valve 26. If the control device (electronics) makes the decision based on the sensor position that oil or hydraulic medium is to be discharged from the suspension cylinders 10, 12, this in turn becomes a valve 26 driven and brought to the working pressure, which should prevail on the Ring ⁇ page at the annular spaces 14.
  • the described suspension device according to the invention can also be realized with only one suspension cylinder, here the suspension cylinder (10).
  • the suspension cylinder here the suspension cylinder (12)
  • the corresponding fluid lines could be closed by closure parts such as blind plugs or the like.
  • Interconnection could use the Fede ⁇ tion device shown in the figure also for more than two suspension cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

La présente invention concerne un dispositif de suspension destiné notamment à des véhicules ayant des rapports de charge variables et comprenant au moins un cylindre de suspension (10, 12) qui présente respectivement des chambres de pression comme une chambre annulaire (14) et une chambre de piston (16); un système détecteur de charge (18) destiné à la génération de pression; deux conduites d'alimentation formant des branches principales (22, 24) entre ces chambres (14,16) et une pompe (P) ainsi qu'un raccordement de réservoir (T). Une soupape (26, 28) est montée dans chaque branche principale (22, 24), au moins une soupape (26) étant une soupape de régulation de pression qui permet de régler la pression de la chambre de pression respectivement donnée du cylindre de suspension (10, 12) respectif. Ce dispositif de suspension comprend également un dispositif régulateur de niveau, la régulation de niveau s'effectuant en plus de la régulation de pression (26) à l'aide de cette soupape de régulation de pression (26) et la soupape de régulation de pression (26) étant commandée par voie électrique à l'aide d'un dispositif de commande.
EP05771915A 2004-08-21 2005-08-11 Dispositif de suspenson Ceased EP1778508A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004040636A DE102004040636A1 (de) 2004-08-21 2004-08-21 Federungsvorrichtung
PCT/EP2005/008706 WO2006021327A1 (fr) 2004-08-21 2005-08-11 Dispositif de suspenson

Publications (1)

Publication Number Publication Date
EP1778508A1 true EP1778508A1 (fr) 2007-05-02

Family

ID=35063354

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05771915A Ceased EP1778508A1 (fr) 2004-08-21 2005-08-11 Dispositif de suspenson

Country Status (4)

Country Link
US (1) US20090051130A1 (fr)
EP (1) EP1778508A1 (fr)
DE (1) DE102004040636A1 (fr)
WO (1) WO2006021327A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012000045B3 (de) * 2012-01-03 2013-03-28 Hydac System Gmbh Vorrichtung zur Ansteuerung eines fluidbetätigten Aktuators bei einer Arbeitsgerätschaft
DE102012106185B3 (de) 2012-07-10 2013-11-21 Fsp Fluid Systems Partners Holding Ag Steueranordnung für ein hydropneumatisches Federungssystem sowie hydropneumatisches Federungssystem mit einer solchen Steueranordnung
DE102012022030A1 (de) * 2012-11-12 2014-05-15 Deere & Company Federungseinrichtung für eine beweglich gelagerte Fahrzeugachse
DE102013102069A1 (de) 2013-03-01 2014-09-04 Fsp Fluid Systems Partners Holding Ag Proportional-Wegeventil sowie hydraulische Schaltung und hydropneumatisches Federungssystem mit einem derartigen Ventil
DE102015101032A1 (de) * 2015-01-26 2016-07-28 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Landwirtschaftliche Maschine und Regelungsverfahren
EP3283310B1 (fr) * 2015-04-17 2019-08-07 CNH Industrial Italia S.P.A. Système de suspension pour un véhicule
ITUB20160745A1 (it) * 2016-02-15 2017-08-15 Cnh Ind Italia Spa Un processo di controllo per le sospensioni di un veicolo
CN106314061B (zh) * 2016-10-18 2018-10-16 隆学武 主动体积控制的油气悬挂系统及车辆
DE102017001653A1 (de) 2017-02-21 2018-08-23 Hydac Systems & Services Gmbh Federungsvorrichtung
DE102018004769A1 (de) 2018-06-13 2019-12-19 Hydac Mobilhydraulik Gmbh Steuervorrichtung
WO2019241650A1 (fr) * 2018-06-14 2019-12-19 ClearMotion, Inc. Accumulateurs pour système de suspension active distribuée
DE102020001713A1 (de) 2020-03-13 2021-09-16 Hydac Mobilhydraulik Gmbh Ansteuervorrichtung
DE102020002124A1 (de) 2020-04-02 2021-10-07 Hydac Mobilhydraulik Gmbh Hydropneumatisches Federungssystem für Fahrzeuge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2628948B2 (ja) * 1991-08-06 1997-07-09 本田技研工業株式会社 能動型懸架装置の油圧制御装置
DE4242448C1 (de) * 1992-12-16 1994-03-31 Integral Hydraulik Co Hydro-pneumatische Federungseinrichtung
DE19719076C2 (de) * 1997-05-06 2000-05-04 Integral Accumulator Kg Hydropneumatische Federungseinrichtung für Fahrzeuge mit großen Lastverhältnissen
DE10107644B4 (de) * 2001-02-15 2005-02-10 Carl Freudenberg Kg Hydropneumatische Federung für Fahrzeuge mit stark wechselnden Achslasten
US6578855B2 (en) * 2001-07-11 2003-06-17 Deere & Company Vehicle suspension control system
DE10232769B4 (de) * 2002-07-18 2005-08-25 Carl Freudenberg Kg Hydropneumatische Achsfederung für Fahrzeuge für Fahrzeuge mit stark wechselden Achslasten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006021327A1 *

Also Published As

Publication number Publication date
WO2006021327A1 (fr) 2006-03-02
US20090051130A1 (en) 2009-02-26
DE102004040636A1 (de) 2006-02-23

Similar Documents

Publication Publication Date Title
EP1778508A1 (fr) Dispositif de suspenson
DE102006002983B4 (de) Aktives Fahrwerksystem eines Fahrzeugs
EP1508461B1 (fr) Suspension hydropneumatique
EP1963118B1 (fr) Suspension hydropneumatique de l'essieu de vehicules automobiles
EP2098389B1 (fr) Agencement de ressort hydraulique
DE4242448C1 (de) Hydro-pneumatische Federungseinrichtung
EP1232883B1 (fr) Suspension hydropneumatique de véhicule
EP1508460B1 (fr) Suspension hydrpneumatique
DE10232769B4 (de) Hydropneumatische Achsfederung für Fahrzeuge für Fahrzeuge mit stark wechselden Achslasten
DE102012019863A1 (de) Fahrzeug
DE10107644B4 (de) Hydropneumatische Federung für Fahrzeuge mit stark wechselnden Achslasten
DE102004030009A1 (de) Hydraulische Steuervorrichtung
DE19719076C2 (de) Hydropneumatische Federungseinrichtung für Fahrzeuge mit großen Lastverhältnissen
DE4035313C2 (de) System zum Regeln eines Fahrwerkes
EP2685109A2 (fr) Agencement de commande pour un système de suspension hydropneumatique et système de suspension hydropneumatique doté d'un tel agencement de commande
EP2466154B1 (fr) Dispositif de commande hydroélectrique
WO2005052380A1 (fr) Dispositif de commande hydraulique d'un equipement mobile
DE4221088C2 (de) Aufhängungssystem für Fahrzeuge
WO2004098918A1 (fr) Suspension hydropneumatique
DE102021121843B3 (de) Hydropneumatisches Federungssystem
DE4118822C2 (fr)
WO2007128339A1 (fr) Dispositif borne de raccordement avec soupape de pression
EP4096943B1 (fr) Système de suspension hydropneumatique pour véhicules
WO2018153677A1 (fr) Dispositif de suspension
DE10338534B3 (de) Vorrichtung zur Steuerung des Federungsverhaltens von Fahrzeugen mit wechselnden Achslasten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20061207

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20070706

DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R003

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20120422