WO2019115152A1 - Essieu de véhicule dirigeable - Google Patents

Essieu de véhicule dirigeable Download PDF

Info

Publication number
WO2019115152A1
WO2019115152A1 PCT/EP2018/081600 EP2018081600W WO2019115152A1 WO 2019115152 A1 WO2019115152 A1 WO 2019115152A1 EP 2018081600 W EP2018081600 W EP 2018081600W WO 2019115152 A1 WO2019115152 A1 WO 2019115152A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering
vehicle
axle
drive
output shaft
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
PCT/EP2018/081600
Other languages
German (de)
English (en)
Inventor
Christian Stammberger
Peter Streipardt
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen 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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of WO2019115152A1 publication Critical patent/WO2019115152A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D9/00—Steering deflectable wheels not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/02—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0421—Electric motor acting on or near steering gear
    • 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
    • B62D7/08—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle
    • B62D7/10—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle with single-output steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/32—Rigid axle suspensions pivoted
    • B60G2200/322—Rigid axle suspensions pivoted with a single pivot point and a straight axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/44—Indexing codes relating to the wheels in the suspensions steerable

Definitions

  • the invention relates to a steerable vehicle axle for a vehicle frame having a vehicle, having a steering mechanism which has an axle body extending transversely to the longitudinal extent of the vehicle, at the two ends of which a steering knuckle is pivotably mounted about a vertical axle pivot axis.
  • a steerable vehicle axle for a vehicle frame having a vehicle, having a steering mechanism which has an axle body extending transversely to the longitudinal extent of the vehicle, at the two ends of which a steering knuckle is pivotably mounted about a vertical axle pivot axis.
  • the steering drive with the motor drive and possibly other components such. to arrange a gear on the axle body.
  • the steering drive also moves together with the axle body. This loads the connecting cables for the power supply of the motor drive and signal cables.
  • the object of the invention is therefore to provide a steerable vehicle axle of the type mentioned, which enables mechanical relief of components of the steering axle and a high efficiency of the motor drive with a simple structure.
  • This object is achieved in that the steering drive is fixed to the vehicle frame.
  • both the motor drive and possibly other components such as a transmission and the connecting lines for the power supply of the motor drive and signal lines of mechanical loads due to the pendulum movements of the steering mechanism and shocks during driving isolated.
  • no such loads of the motor drive and possibly the other components and the connecting cables for the power supply which can be carried out easier.
  • the space above the axis can be used for these components, so that more space for the steering axle is available.
  • the motor drive is an electric motor drive.
  • This electromechanical steering has a much higher efficiency than e.g. hydromechanical steering, since only energy is needed when actually steering. Furthermore, a vehicle can be operated with electromechanical steering longer without charging a battery or without battery replacement than in a vehicle with hydromechanical steering. In addition, additional functions can be realized very easily.
  • the vehicle may be a four-wheel vehicle, with the steering geometry meeting the conditions of the field.
  • axle of the non-steered vehicle axle, the axis of the right wheel of the steerable vehicle axle and the axle of the left wheel of the steerable vehicle axle intersect at the instantaneous pole of the vehicle.
  • the instantaneous pole is the point around which the vehicle drives when cornering.
  • the steering drive may have a steering gear.
  • the output shaft of the steering drive and the steering mechanism can be connected to each other via an angularly elastic but torsionally rigid coupling in order to transmit the steering movement from the steering drive to the steering mechanism even with pendulum deflections of the steering mechanism.
  • An easily trained and thus defect-susceptible training possibility for this purpose is that the output shaft has at its end facing the steering mechanism a crowned tooth profile which is in operative connection with a straight tooth profile of a component of the steering mechanism which extends along the pendulum axis.
  • a steering lever of the steering mechanism pivotably mounted on the axle body about a vertical axis can be driven in a pivotable manner by the output shaft, by means of which the tie rod can be driven to move transversely to the longitudinal extension of the vehicle directly at a distance from the vertical axis or indirectly via a steering rod.
  • the angularly elastic but torsionally stiff coupling via which the output shaft of the steering drive and the steering mechanism are connected to each other, can also be formed in that the steering lever is connected at a distance to the vertical axis by means of a ball joint directly or via a steering rod by means of two ball joints with the tie rod ,
  • an angularly movable coupling may be diaphragm couplings, metal bellows couplings or universal joints.
  • Figure 1 is a schematic plan view of a first chassis configuration in
  • Figure 2 is a schematic plan view of the chassis configuration of Figure 1 in steering position
  • FIG. 3 is an enlarged view of a steering drive, a first embodiment of an embodiment of an angularly elastic but torsionally rigid coupling and a steering lever of the chassis configuration according to FIG. 1 in cross section
  • Figure 4 shows the enlarged view of the steering drive, the first embodiment of the angularly elastic but torsionally stiff coupling and the steering lever of the chassis configuration of Figure 1 in longitudinal section
  • Figure 5 is a schematic plan view of a second suspension configuration in
  • Figure 6 is a schematic plan view of the chassis configuration of Figure 5 in steering position
  • FIG. 7 is an enlarged view of a steering drive, a first embodiment of an embodiment of an angularly elastic but torsionally rigid coupling and a steering pinion of the chassis configuration according to FIG. 5
  • Figure 8 is an enlarged view of a steering drive, with steering lever of a third suspension configuration
  • FIG. 9 shows a steering rod with toggle lever and steering lever of the chassis configuration according to FIG. 8.
  • the chassis configurations of a vehicle shown in the figures have a front axle 1 formed as a rigid axle with non-steerable front wheels 3, which are rotatable about a common axis of rotation 19.
  • a rear axle 2 is designed as a steering axle, which is shown in Figures 1 and 5 in a straight ahead position and in Figures 2 and 6 in a steering rash.
  • the rear wheels 5 and 18 having rear wheel axle 2 has a steering knuckle steering with a tie rod 9 and a handlebar 13 on.
  • the axle stems 6 and 17 of the steering knuckle steering rotatably mounted in an axle body 23 are firmly connected to track levers 7 and 16.
  • the rear wheels 5 and 18 are rotatably mounted on the stub axles 6 and 17 about axes of rotation 21 and 20.
  • the toggle levers 7 and 16 are pivotably connected to the tie rod 9 via toggle joints 8 and 14.
  • the Spurhebelgesch 8 is located on a straight line that connects the bearing of the steering knuckle 6 with the center 4 of the front axle 1.
  • the toggle joint 14 is located on a straight line connecting the bearing of the steering knuckle 17 with the center 4 of the front axle 1.
  • the distance from the bearing of the steering knuckle 6 to the toggle joint 8 is equal to the distance from the bearing of the steering knuckle 17 to the toggle joint 14. This configuration is required to meet the steering geometry of the Ackermann condition.
  • a steering rod 13 is pivotally mounted on the track lever 16 at one end with a second handlebar joint 15.
  • a steering lever 10 is pivotally mounted by means of a first handlebar joint 12.
  • the steering lever 10 is rotatably supported on the axle body 23 via a bearing 11.
  • the pivoting movement of the steering lever 10 is transmitted by means of the handlebar 13 on the track lever 16 and from this to the tie rod 9 and the steering knuckle 17.
  • the tie rod 9 also transmits the steering movement to the track lever 7 and this on the steering knuckle 6.
  • the steering geometry of the rear axle 2 satisfies the Ackermann condition, whereupon the common axle 19 of the front wheels 3, a rotation axis 20 of the right rear wheel 18 and a rotation axis 21 of the left rear wheel 5 become in an instantaneous pole 25 of the vehicle.
  • the instantaneous pole 25 is the point around which the vehicle travels during turns.
  • the steering angle of the left rear wheel 5 must be different from the steering angle of the right rear wheel 18.
  • the rear axle 2 is further designed as a pendulum axle, which is connected via a self-aligning bearing 24 with a vehicle frame 26 of the vehicle.
  • the self-aligning bearing 24 with an axis 22 extending in the longitudinal direction of the vehicle makes it possible for the rear axle 2 to oscillate about this oscillating axle 22 so that all wheels 3, 5 and 18 always have contact with the ground, even on uneven ground. This is necessary because the front wheels 3 are unsprung and vertically connected to the vehicle frame 26, while the rear wheels 5 and 18 are unsprung and immovably connected to the axle body 23 in the vertical direction.
  • a steering drive which has an electric motor 28 and a steering gear 27, which are fixedly connected to the vehicle frame 26.
  • the steering drive thus does not oscillate together with the axle body 23 but remains stationary on the vehicle frame 23.
  • the steering gear 27 has an output shaft 29, which transmits the steering torque by means of a spherical tooth profile 30 on the steering lever 10, which has a straight tooth profile 31, in which engages the spherical tooth profile of the output shaft 29.
  • the crowned tooth profile 30 and the straight tooth profile 31 form a toothed coupling which permits an angular deviation of the axes of spherical tooth profile 30 and straight tooth profile 31 as well as an axial displacement of crowned tooth profile 30 and straight tooth profile 31 relative to one another.
  • the possible axial displacement of ballistic like tooth profile 30 and straight tooth profile 31 relative to each other also facilitates the assembly of the steering and ensures a tolerance compensation.
  • the steering lever 10 with the straight tooth profile 31 is also pivoted about the pendulum axis 22.
  • the spherical tooth profile 30 of the output shaft 29 of the steering gear 27 is formed so that it allows the pivotal movement of the steering lever 10 about the pendulum axis 22 without the output shaft 29 must be pivoted about the axis 22 or forced forces in the tooth profiles 30 and 31st comes.
  • FIGS. 5 to 7 show a steering designed as a rack and pinion steering system.
  • a steering pinion 33 is rotatably mounted in the axle body 23 about a steering pinion axis 34, which is in a tooth engagement 35 with the toothed rack formed as a tie rod 9 '.
  • the tie rod 9 ' is mounted axially displaceably in the axle body 23.
  • the ends of the tie rod 9 ' are articulated by means of steering lever joints 36 and 37 at the one ends of steering levers 39 and 38.
  • the steering levers 39 and 38 are connected at their other ends by means of track joints 8 and 14 with lugs 7 and 16 articulated.
  • FIGS. 8 and 9 show an alternative to the angularly movable coupling of FIGS. 3 and 4.
  • the output shaft 29 of the steering gear 27 is directly connected to the steering lever 10.
  • the steering lever 10 thus performs no pendulum motion together with the axle 23 about the pendulum axis 22.
  • the steering rod 13 connects the steering lever 10 with the track lever 16, which can commute together with the axle body 23 about the pend- delachse 22.
  • the steering rod 13 is fastened to the steering lever 10 with a ball joint 43 and to the track lever 16 with a ball joint 44.
  • the ball joints 43 and 44 limit all linear degrees of freedom, but allow, to some degree, rotational movements in all directions. As a result, the steering rod 13 can take over the compensation of the pendulum movement of the axle body 23.
  • other suitable joints or elastic elements can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

L'invention concerne un essieu de véhicule dirigeable pour un véhicule ayant un châssis de véhicule, qui comporte un mécanisme de direction comprenant un corps d'essieu (23) qui s'étend transversalement à l'extension longitudinale du véhicule et aux deux extrémités duquel un porte-fusée (6,17) est monté pivotant autour d'un axe d'essieu verticale, des roues (5, 18) étant montées de façon rotative sur les porte-fusées (6, 17), et qui comporte une barre d'accouplement (9, 9') s'étendant parallèlement au corps d'essieu (23) et pouvant être entraînée de manière mobile par un entraînement de direction ayant un entraînement moteur au moyen d'un arbre de sortie (29) transversalement à l'extension longitudinale du véhicule et le mécanisme de direction avec le corps d'essieu (23) et les porte-fusées (6, 17) ainsi qu'avec les roues (5, 18) étant montés de manière pivotante sur un essieu oscillant (22) s'étendant dans la longueur du véhicule. L'entraînement de direction est fixé au châssis du véhicule (26).
PCT/EP2018/081600 2017-12-15 2018-11-16 Essieu de véhicule dirigeable Ceased WO2019115152A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017222887.3A DE102017222887A1 (de) 2017-12-15 2017-12-15 Lenkbare Fahrzeugachse
DE102017222887.3 2017-12-15

Publications (1)

Publication Number Publication Date
WO2019115152A1 true WO2019115152A1 (fr) 2019-06-20

Family

ID=64453471

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/081600 Ceased WO2019115152A1 (fr) 2017-12-15 2018-11-16 Essieu de véhicule dirigeable

Country Status (2)

Country Link
DE (1) DE102017222887A1 (fr)
WO (1) WO2019115152A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12559172B2 (en) 2021-11-22 2026-02-24 Zf Friedrichshafen Ag Steering axle for a steerable vehicle and industrial truck

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021213067A1 (de) 2021-11-22 2023-05-25 Zf Friedrichshafen Ag Lenkantrieb für eine Lenkachse eines lenkbaren Fahrzeugs, Lenkachse und Flurförderzeug
DE102021213069B3 (de) 2021-11-22 2022-09-01 Zf Friedrichshafen Ag Antrieb für eine Lenkachse eines Flurförderzeugs, Lenkachse und Flurförderzeug
DE102021213063B4 (de) 2021-11-22 2023-08-03 Zf Friedrichshafen Ag Lenkantrieb für eine Lenkachse eines lenkbaren Fahrzeugs, Lenkachse und Flurförderzeug
DE102021213862B4 (de) 2021-12-07 2023-09-07 Zf Friedrichshafen Ag Lenkachse für ein lenkbares Fahrzeug und Flurförderzeug
CN118062098B (zh) * 2022-11-03 2025-01-24 东风商用车有限公司 一种具备主动转向及回正功能的后桥转向系统和车辆
DE102022211817B3 (de) 2022-11-09 2023-08-17 Zf Friedrichshafen Ag Lenkachse für ein Flurförderzeug und Flurförderzeug
DE102023202216B3 (de) 2023-03-13 2024-01-18 Zf Friedrichshafen Ag Elektrische Lenkachse für eine Arbeitsmaschine und Arbeitsmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060208445A1 (en) * 2005-03-16 2006-09-21 Rowe Truck Equipment, Inc. Suspension and steering system
JP2015145191A (ja) * 2014-02-04 2015-08-13 ニチユ三菱フォークリフト株式会社 リアアクスルフレーム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1630616A1 (de) * 1967-07-31 1971-07-22 Kloeckner Humboldt Deutz Ag Lenkeinrichtung fuer Kraftfahrzeuge
DE3016063C2 (de) * 1980-04-25 1985-01-17 Steinbock Gmbh, 8052 Moosburg Lenkvorrichtung für die Hinterachse eines Fahrzeugs
DE8334546U1 (de) * 1983-12-01 1985-05-09 Kramer-Werke GmbH, 7770 Überlingen Fahrzeug mit lenkbaren raedern
DE19961680A1 (de) * 1999-12-21 2001-06-28 Continental Teves Ag & Co Ohg Über eine Welle angetriebene Bremsvorrichtung
DE102009012770A1 (de) * 2009-03-12 2010-09-16 Trw Automotive Gmbh Hydrauliksystem einer Fahrzeug-Hinterachsenlenkung
US8864153B2 (en) * 2013-03-12 2014-10-21 GM Global Technology Operations LLC Automotive rear suspension subassembly
DE102016217778A1 (de) * 2016-09-16 2018-03-22 Zf Friedrichshafen Ag Lenkvorrichtung für ein Fahrzeug

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060208445A1 (en) * 2005-03-16 2006-09-21 Rowe Truck Equipment, Inc. Suspension and steering system
JP2015145191A (ja) * 2014-02-04 2015-08-13 ニチユ三菱フォークリフト株式会社 リアアクスルフレーム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12559172B2 (en) 2021-11-22 2026-02-24 Zf Friedrichshafen Ag Steering axle for a steerable vehicle and industrial truck

Also Published As

Publication number Publication date
DE102017222887A1 (de) 2019-06-19

Similar Documents

Publication Publication Date Title
WO2019115152A1 (fr) Essieu de véhicule dirigeable
DE102014004231B4 (de) Lenkvorrichtung
EP2598349A1 (fr) Dispositif de réglage d'essieu d'un véhicule automobile
DE102021213066B4 (de) Lenkachse für ein lenkbares Fahrzeug und Flurförderzeug
DE2214001C3 (de) Servolenkung für Fahrzeuge
DE602005000712T2 (de) Auflieger oder Anhänger mit verbesserter Lenkungsregelung
DE3514146A1 (de) Angetriebene achse fuer nutzfahrzeuge
EP2788209B1 (fr) Essieu de véhicule à deux voies comprenant un stabilisateur à barre de torsion
DE877408C (de) Gelaendeausgleichachse
EP1373048B1 (fr) Bogie autoguide a trois essieux
DE3209057A1 (de) Hydraulisches lenksystem fuer die lenkbaren raeder einer fahrzeugachse
DE19935160A1 (de) Vorrichtung zur Erhöhung der Lenkfähigkeit getriebener Achsen
EP0356456A1 (fr) Pont directeur a servodirection.
DE102007012870A1 (de) Lenkgestänge eines Kraftfahrzeuges
EP1800991B1 (fr) Essieu directeur
EP0259690B1 (fr) Dispositif de commande de direction pour roues arrières d'un véhicule
DE102024002178A1 (de) Lenkeinrichtung für ein Kraftfahrzeug und Kraftfahrzeug
DE2944208A1 (de) Mehrachsfahrzeug, insbesondere vielachsiges kranfahrzeug
DE102012014001A1 (de) Knickgelenkfahrzeug und Knickgelenkanordnung für ein solches Fahrzeug
DE3905818C2 (de) Hinterrad-Lenkvorrichtung für Kraftfahrzeuge
WO2023104561A1 (fr) Ensemble de direction pour un véhicule, en particulier un véhicule utilitaire, et véhicule, plus particulièrement un véhicule utilitaire
DE2513624B2 (de) Lenkeinrichtung für ein Radfahrzeug
DE1655023C3 (de) Lenkung für Kraftfahrzeuge
EP0003751A1 (fr) Disposition de l'arbre de transmission dans un autobus articulé
DE3728593A1 (de) Hinterradlenkung fuer kraftfahrzeuge

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18807582

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 18807582

Country of ref document: EP

Kind code of ref document: A1