WO2007122102A1 - Système de direction assistée pour véhicules - Google Patents

Système de direction assistée pour véhicules Download PDF

Info

Publication number
WO2007122102A1
WO2007122102A1 PCT/EP2007/053489 EP2007053489W WO2007122102A1 WO 2007122102 A1 WO2007122102 A1 WO 2007122102A1 EP 2007053489 W EP2007053489 W EP 2007053489W WO 2007122102 A1 WO2007122102 A1 WO 2007122102A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering system
power steering
working cylinder
cylinder
hydraulic circuit
Prior art date
Application number
PCT/EP2007/053489
Other languages
German (de)
English (en)
Inventor
Andreas Braun
Hans-Peter Löffler
Gernot Wahl
Harald Lenhardt
Original Assignee
Zf Lenksysteme 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 Zf Lenksysteme Gmbh filed Critical Zf Lenksysteme Gmbh
Publication of WO2007122102A1 publication Critical patent/WO2007122102A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B62D7/142—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering specially adapted for particular vehicles, e.g. tractors, carts, earth-moving vehicles, trucks
    • B62D7/144—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering specially adapted for particular vehicles, e.g. tractors, carts, earth-moving vehicles, trucks for vehicles with more than two axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D13/00—Steering specially adapted for trailers
    • B62D13/02—Steering specially adapted for trailers for centrally-pivoted axles
    • B62D13/025—Steering specially adapted for trailers for centrally-pivoted axles the pivoted movement being initiated by the coupling means between tractor and trailer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D13/00—Steering specially adapted for trailers
    • B62D13/04—Steering specially adapted for trailers for individually-pivoted wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B62D7/148—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering provided with safety devices

Definitions

  • the invention relates to acting on a leading or trailing axle
  • Power steering system of a vehicle in particular a truck or a steerable axle of a trailer or semi-trailer or a steerable axle of a vehicle, in particular a two- or multi-articulated articulated bus.
  • a power steering system for a vehicle which has a supporting the steering movement main working cylinder and the hydraulic circuit is controlled by the steering gear.
  • a Zusalzarbeitszylinder is provided, which is controllable by a safety device and the hydraulic circuit is separated from that of the main working cylinder.
  • the disclosed in Scripture invention is based on the need to support a conventional power steering hydraulically in addition.
  • Such hydraulic supports are designed to be redundant, which in particular involves problems in the arrangement of the redundant cylinder with respect to the vibration behavior of the steering system.
  • Object of the present invention is to provide a power steering system, which relates to a leading or trailing axle of a motor vehicle or a steerable axle of a vehicle, such as a trailer or semi-trailer or a vehicle of a two or more articulated articulated bus, and in a simple manner the maintenance of an emergency operation in case of failure allows.
  • the invention relates to a power steering system for a steerable axle
  • Vehicle with a working cylinder whose hydraulic circuit is independent of the hydraulic circuit of the steering gear and is controllable by means of a control unit and an actuator from.
  • a linear encoder or located in the working cylinder hydraulic circuit pressure sensor is a linear encoder or located in the working cylinder hydraulic circuit pressure sensor.
  • the linear encoder is mounted directly on the cylinder and detects contactless the position of the piston in the working cylinder.
  • the output signal can be supplied for plausibility and / or control purposes of a control unit.
  • the centering is redundant. This additionally increases the operational safety.
  • a bidirectional exchange of data in particular information regarding the status of the power steering system, the pressure conditions in the hydraulic cylinder and the measured by a pressure sensor pressure ratios in Zentrierzylinderhydrauliknik and information, suitable for describing the location of the working cylinder located piston and information to describe the wheel position of the wheels between the control units to allow.
  • Another embodiment provides to integrate the working cylinder and centering in an assembly or assembly. This has the advantage that sensors can be advantageously integrated and the space is reduced, in addition, thereby the supply lengths of hydraulic or pneumatic lines can be shortened.
  • the power steering system in vehicle cars which are connected to each other with an articulated joint, for example, in a final vehicle car of a multi-articulated bus, used.
  • the power steering system 1 comprises a hydraulic pump 23 for the pressure medium supply of the steering gear 30 associated Lenkgetriebe- hydraulic circuit 31 and the working cylinder associated hydraulic circuit, the working cylinder hydraulic circuit 33, on.
  • the working spaces of the working cylinder 4 are formed by a proportional valve and by the control unit 25 controlled actuator 20 is acted upon by pressure medium such that a corresponding predetermined wheel steering angle predetermined Radlenkwinkelver ein the wheels 6.7 of the steerable trailing axle 2 results.
  • the control unit 25 receives from a steering angle sensor 22 corresponding information about the current steering angle of the vehicle and calculates therefrom on the basis of algorithms a target value for the wheel steering angle of the wheels to be set 6,7.
  • the algorithm advantageously evaluates the information about the current vehicle speed.
  • the steering angle can also represent a bending angle between two vehicle cars, which is measured by means of a hinged angle sensor attached to a joint.
  • the control unit 25 receives a signal of a arranged in the range of action of the working cylinder 33 linear encoder 27. This allows a review of the operation of the working hydraulic circuit 33 and / or the position control of the working cylinder 4.
  • the working cylinder 4 has a positive coupling 3 to the centering 5 on. In the normal operating state, the centering cylinder 5 is depressurized, ie, the control unit 26 generates a corresponding signal for the located in the hydraulic circuit of the centering switching valve 21, which separates the pressure accumulator 24 from the centering cylinder 5.
  • the centering cylinder 5 in this case has a self-centering of the piston located in the centering cylinder when pressure medium is applied. This centering is designed such that there is a straight ahead position of the steered wheels 6.7 in the direction of travel.
  • a pressure sensor 28 is provided, the signal of which is supplied to the control unit 26. Thus, for example, at system start or during the run-up phase or during normal operation of the centering cylinder or the function or tightness of the pneumatic circuit 34 are checked. If a detection of the failure of the working cylinder hydraulic circuit takes place a separation of the working cylinder from the pressure medium supply.
  • the proportional valve 20 has a neutral position, in which the supply lines to the working spaces are depressurized or short-circuited, so that a free movement of the piston is ensured in the working cylinder.
  • the control unit 25, 26 communicate with each other and exchange information regarding the state of the steering system.
  • the control unit 26 receives corresponding information about the failure of the working cylinder hydraulic circuit and then switches the centering cylinder 5 by means of the switching valve 21 active so that as a result adjusts an orientation of the wheels 6,7 in straight ahead position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Power Steering Mechanism (AREA)

Abstract

L'invention concerne un système de direction assistée pour un essieu (2) orientable d'un véhicule comprenant un cylindre (4) de travail dont le circuit hydraulique peut être commandé indépendamment de la commande du circuit (31) hydraulique du mécanisme de direction et au moyen d'une unité (25, 26) de commande et d'un organe (20) de commande, des moyens de détection d'un défaut de fonctionnement du cylindre (4) de travail et/ou d'un circuit (33) hydraulique de cylindre de travail ainsi que des moyens de maintien d'un fonctionnement de secours en cas de défaut de fonctionnement étant prévus.
PCT/EP2007/053489 2006-04-20 2007-04-11 Système de direction assistée pour véhicules WO2007122102A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006018390.8 2006-04-20
DE200610018390 DE102006018390A1 (de) 2006-04-20 2006-04-20 Hilfskraftlenksystem für Fahrzeuge

Publications (1)

Publication Number Publication Date
WO2007122102A1 true WO2007122102A1 (fr) 2007-11-01

Family

ID=38158018

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/053489 WO2007122102A1 (fr) 2006-04-20 2007-04-11 Système de direction assistée pour véhicules

Country Status (2)

Country Link
DE (1) DE102006018390A1 (fr)
WO (1) WO2007122102A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2465753A1 (fr) * 2010-12-09 2012-06-20 Hydac System GmbH Dispositif de commande pour la commande d'au moins un cylindre de commande hydraulique
WO2012080774A1 (fr) * 2010-12-17 2012-06-21 Renault Trucks Système de direction assistée pour un véhicule possédant deux essieux directeurs
WO2014023506A1 (fr) * 2012-08-06 2014-02-13 Zf Lenksysteme Gmbh Système de direction pour un essieu traîné d'un véhicule
WO2014029555A1 (fr) * 2012-08-23 2014-02-27 Zf Lenksysteme Gmbh Système de direction pour un essieu suiveur d'un véhicule
GB2571736A (en) * 2018-03-06 2019-09-11 Combilift Hydraulic steering systems for vehicle wheels

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036613A1 (de) 2010-07-26 2012-01-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Lenkanordnung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212793A (en) * 1962-11-29 1965-10-19 Pietroroia Dominic Steering control apparatus for trailers
US4603873A (en) * 1981-11-05 1986-08-05 Roberto Perlini Device for straight traveling stabilization and change of attitude on predetermined paths for vehicle axles
EP0911246A2 (fr) * 1997-10-24 1999-04-28 Meritor Heavy Vehicle Systems Limited Système de direction pour remorque
FR2859440A1 (fr) * 2003-09-04 2005-03-11 Kuhn Huard Sa Essieu directeur a recuperation de trajectoire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212793A (en) * 1962-11-29 1965-10-19 Pietroroia Dominic Steering control apparatus for trailers
US4603873A (en) * 1981-11-05 1986-08-05 Roberto Perlini Device for straight traveling stabilization and change of attitude on predetermined paths for vehicle axles
EP0911246A2 (fr) * 1997-10-24 1999-04-28 Meritor Heavy Vehicle Systems Limited Système de direction pour remorque
FR2859440A1 (fr) * 2003-09-04 2005-03-11 Kuhn Huard Sa Essieu directeur a recuperation de trajectoire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WINTERHAGEN J: "NEUENTWICKLUNGEN BEI NUTZFAHRZEUGLENKUNGEN NEW DEVELOPMENTS IN STEERING SYSTEMS FOR COMMERCIAL VEHICLES", ATZ AUTOMOBILTECHNISCHE ZEITSCHRIFT, VIEWEG PUBLISHING, WIESBADEN, DE, vol. 97, no. 7/8, 1 July 1995 (1995-07-01), pages 428,430 - 431, XP000521273, ISSN: 0001-2785 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2465753A1 (fr) * 2010-12-09 2012-06-20 Hydac System GmbH Dispositif de commande pour la commande d'au moins un cylindre de commande hydraulique
WO2012080774A1 (fr) * 2010-12-17 2012-06-21 Renault Trucks Système de direction assistée pour un véhicule possédant deux essieux directeurs
WO2014023506A1 (fr) * 2012-08-06 2014-02-13 Zf Lenksysteme Gmbh Système de direction pour un essieu traîné d'un véhicule
CN104661899A (zh) * 2012-08-06 2015-05-27 Zf操作系统有限公司 用于车辆后从动轴的转向系统
WO2014029555A1 (fr) * 2012-08-23 2014-02-27 Zf Lenksysteme Gmbh Système de direction pour un essieu suiveur d'un véhicule
CN104661900A (zh) * 2012-08-23 2015-05-27 Zf操作系统有限公司 用于车辆的后从动轴的转向系统
GB2571736A (en) * 2018-03-06 2019-09-11 Combilift Hydraulic steering systems for vehicle wheels

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Publication number Publication date
DE102006018390A1 (de) 2008-05-29

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