EP1370732B1 - Wheeled excavator - Google Patents
Wheeled excavator Download PDFInfo
- Publication number
- EP1370732B1 EP1370732B1 EP02712939A EP02712939A EP1370732B1 EP 1370732 B1 EP1370732 B1 EP 1370732B1 EP 02712939 A EP02712939 A EP 02712939A EP 02712939 A EP02712939 A EP 02712939A EP 1370732 B1 EP1370732 B1 EP 1370732B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axle
- lower chassis
- steering
- wheeled excavator
- undercarriage
- 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.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000004393 visual impairment Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0841—Articulated frame, i.e. having at least one pivot point between two travelling gear units
Definitions
- the invention relates to a wheeled excavator with an undercarriage with chassis with a front rigid axle and a rear axle Axle and one arranged on the undercarriage, with a drive unit equipped uppercarriage, wherein the Undercarriage a articulated steering with a front, the front Axle receiving undercarriage part and a rear, having the rear axle receiving undercarriage part, the pivot point of the articulated steering being significantly closer to the front axle is arranged as on the rear axle, and wherein the superstructure on the opposite the front undercarriage part arranged significantly longer rear undercarriage part is.
- a wheeled excavator that has an undercarriage an articulated steering, wherein the pivot point of the articulated steering roughly in the center between the front axle and the rear axle is arranged.
- the articulated steering has a fairly large bending angle on, whereby the wheeled excavator basically on tight Room is very agile. Due to the division of the undercarriage in about two equally sized undercarriage parts is the Uppercarriage of this wheeled excavator on a undercarriage part and the power plant, i. the diesel engine, on the other Carriage of the lower part arranged.
- this wheeled excavator is indeed fundamental very mobile, but it has a relatively low Stability on, as viewed in the longitudinal direction of the Uppercarriage is arranged eccentrically on the undercarriage. This not only adversely affects the state, but in particular also when driving and when steering out, in particular at high bending angles the lateral stability increases strongly off and the wheeled excavator is pivoted in with the uppercarriage Position extremely unstable.
- the object of the invention is therefore the maneuverability of such a wheel excavator to further improve.
- the stability of the device is significantly improved since due to the highly eccentric arrangement of the fulcrum the articulated steering now seen the superstructure in the longitudinal direction, as with wheeled excavators without articulated steering, largely is arranged centrally. Furthermore, also eliminates the known Wheeled excavator with articulated steering required separation between superstructure and drive unit, the drive unit is in the wheel excavator according to the invention in the superstructure integrated. This is not only the stability of the wheeled excavator much improved, but it is also one All-round work possible, the superstructure can opposite the undercarriage to be turned all around without any impairment by the drive unit or visual impairments stipulate on the driver.
- the distance the pivot point of the rear axle at least three times greater than the distance of the fulcrum from the front Axis is.
- the articulation and the rear steering axle are kinematically positively coupled, i.e. during the steering process by the driver will be simultaneously the steerable rear axle and the articulated steering in the same direction directed.
- the maximum bending angle the articulated steering is limited to approx. ⁇ 25 °. Thereby can still another increase in stability for reach the wheel excavator, even when cornering.
- the maneuverability is obtained, however, as a double steering (Articulated steering and steerable rear axle) are provided.
- a shield is arranged at the end located on the side of the front axle.
- the shield is preferably height adjustable and pivotable. This will move the sign in the direction of travel and the unwanted lateral flow of the material is prevented. On the other hand, with an axle with axle steering the sign led obliquely to the direction of travel, whereby the material tends to lateral flow.
- Undercarriage From a wheel excavator according to the invention is in the drawing only one designated 1 undercarriage shown.
- This Undercarriage is divided into two, namely, it has a front Undercarriage part 2 and a rear undercarriage part 3, which are connected to each other via articulated steering, the fulcrum of this articulated steering is denoted by 4.
- the front undercarriage part 2 takes a front axle 5 on which front wheels 6 carries.
- the rear undercarriage part 3 takes a rear axle 7, which rear wheels. 8 wearing.
- a shield 11 is arranged, which can be raised and lowered and swiveled to required Piston / cylinder units are designated 12.
- the present invention is not closer.
- the pivot 4 of the articulated steering significantly closer to the front axle 5 as arranged on the rear axle 7 is, as clearly shown in the drawing.
- the distance between the pivot point 4 and the front axle 5 is with a referred to, while the distance of the pivot point 4 of Articulated steering and the rear axle 7 denoted by b are.
- the ratio b to a is preferably greater than 3, i. the distance b of the rear axle 7 to the pivot point 4th is at least three times larger than the distance a between the front axle 5 and the pivot point 4th
- the rear undercarriage part 3 is clear longer than the front undercarriage part 2, which makes it possible the complete superstructure of the wheel excavator, which in the Drawing is not shown, along with the same not shown drive unit on the rear undercarriage part 3 to arrange.
- a turntable 13 indicated.
- the front axle 5 than with the Frame firmly connected rigid axle is formed while the rear axle 7 preferably as a steerable swing axle is formed, preferably in the form of a steering knuckle axis.
- this forced coupling is in the embodiment of a linkage 14 and an intermediate piston / cylinder unit 15 formed, wherein the linkage 14 on the one at the front Undercarriage part 2 and on the other to a steering linkage 16th the rear steering axle 7 is articulated.
- the piston / cylinder unit 15 By operation the piston / cylinder unit 15, the front wheels 6 and the rear wheels 8 deflected in the same direction. This deflected position of the complete front undercarriage part 2 and the rear wheels is dashed in the drawing indicated.
- the invention is not limited to the illustrated embodiment limited. Further embodiments are possible without leaving the basic idea. So, for example the articulated steering itself and the forced coupling (Linkage 14) with the steering linkage 16 of the rear steering axle 7 can also be realized in other ways, essential is the arrangement of the pivot point 4 of the articulated steering, which a longitudinally central arrangement of the Upper carriage on the undercarriage, and only on the rear Undercarriage part 3 allows.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Body Structure For Vehicles (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Road Repair (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
Description
Die Erfindung betrifft einen Radbagger mit einem Unterwagen mit Fahrwerk mit einer vorderen Starrachse und einer hinteren Achse und einem auf dem Unterwagen angeordneten, mit einem Antriebsaggregat ausgestatteten Oberwagen, wobei der Unterwagen eine Knicklenkung mit einem vorderen, die vordere Achse aufnehmenden Unterwagenteil und einem hinteren, die hintere Achse aufnehmenden Unterwagenteil aufweist, wobei der Drehpunkt der Knicklenkung deutlich näher an der vorderen Achse als an der hinteren Achse angeordnet ist, und wobei der Oberwagen auf dem gegenüber dem vorderen Unterwagenteil deutlich längeren hinteren Unterwagenteil angeordnet ist.The invention relates to a wheeled excavator with an undercarriage with chassis with a front rigid axle and a rear axle Axle and one arranged on the undercarriage, with a drive unit equipped uppercarriage, wherein the Undercarriage a articulated steering with a front, the front Axle receiving undercarriage part and a rear, having the rear axle receiving undercarriage part, the pivot point of the articulated steering being significantly closer to the front axle is arranged as on the rear axle, and wherein the superstructure on the opposite the front undercarriage part arranged significantly longer rear undercarriage part is.
Aus der Zeitschrift VDBUM Seminarband 2001, Seiten 67 bis 71, ist ein Radbagger bekannt, der einen Unterwagen mit einer Knicklenkung aufweist, wobei der Drehpunkt der Knicklenkung in etwa im Zentrum zwischen der vorderen Achse und der hinteren Achse angeordnet ist. Dabei sind sowohl die vordere als auch die hintere Achse als starre Achsen ausgebildet, die Knicklenkung weist einen recht großen Knickwinkel auf, wodurch der Radbagger grundsätzlich auch auf engem Raum sehr wendig ist. Aufgrund der Aufteilung des Unterwagens in in etwa zwei gleich große Unterwagenteile ist der Oberwagen dieses Radbaggers auf einem Unterwagenteil und das Antriebsaggregat, d.h. der Dieselmotor, auf dem anderen Wagen des Unterteils angeordnet.From the magazine VDBUM Seminar tape 2001, pages 67 to 71, a wheeled excavator is known that has an undercarriage an articulated steering, wherein the pivot point of the articulated steering roughly in the center between the front axle and the rear axle is arranged. Here are both the front as well as the rear axle formed as rigid axles, The articulated steering has a fairly large bending angle on, whereby the wheeled excavator basically on tight Room is very agile. Due to the division of the undercarriage in about two equally sized undercarriage parts is the Uppercarriage of this wheeled excavator on a undercarriage part and the power plant, i. the diesel engine, on the other Carriage of the lower part arranged.
Aufgrund dieser Anordnung ist dieser Radbagger zwar grundsätzlich sehr beweglich, er weist jedoch eine relativ geringe Standstabilität auf, da in Längsrichtung gesehen der Oberwagen exzentrisch auf dem Unterwagen angeordnet ist. Dies wirkt sich nicht nur nachteilig im Stand, sondern insbesondere auch beim Fahren und beim Lenken aus, insbesondere bei großen Knickwinkeln nimmt die Seitenstabilität stark ab und der Radbagger wird mit dem Oberwagen in geschwenkter Stellung äußerst instabil. Von weiterem Nachteil ist, dass sich das Antriebsaggregat gegenüber dem Oberwagen auf dem anderen Unterwagenteil befinden muss, was je nach Fahrtrichtung zu einer deutlichen Sichteinschränkung für den Fahrer führt und außerdem die Drehbewegung des Oberwagens gegenüber dem Unterwagen beeinträchtigt, da der Fahrer dafür Sorge tragen muss, dass das Arbeitswerkzeug nicht mit dem Antriebsaggregat kollidiert.Due to this arrangement, this wheeled excavator is indeed fundamental very mobile, but it has a relatively low Stability on, as viewed in the longitudinal direction of the Uppercarriage is arranged eccentrically on the undercarriage. This not only adversely affects the state, but in particular also when driving and when steering out, in particular at high bending angles the lateral stability increases strongly off and the wheeled excavator is pivoted in with the uppercarriage Position extremely unstable. Another disadvantage is that the drive unit with respect to the superstructure on the other undercarriage must be located, depending on the direction of travel to a clear visual restriction for the Driver leads and also the rotational movement of the superstructure affected by the undercarriage, as the driver for it Care must be taken that the working tool is not with collided with the drive unit.
Aus WO 89/11006 A1 ist ein Radbagger mit den Merkmalen
des Oberbegriffes des Patentanspruches 1 bekannt. Die
Manövrierfähigkeit dieses Radbaggers ist jedoch noch verbesserungswürdig.From WO 89/11006 A1 is a wheeled excavator with the features
the preamble of
Aufgabe der Erfindung ist es deshalb, die Manövrierfähigkeit eines solchen Radbaggers weiter zu verbessern.The object of the invention is therefore the maneuverability of such a wheel excavator to further improve.
Diese Aufgabe wird bei einem Radbagger der eingangs bezeichneten Art erfindungsgemäß dadurch gelöst, dass die hintere Achse als Lenkachse ausgebildet ist und dass der Drehpunkt des Oberwagens auf dem Unterwagen, in Längsrichtung gesehen, im Wesentlichen mittig zwischen der vorderen und der hinteren Achse angeordnet ist.This object is referred to in a wheel excavator of the above Art solved according to the invention that the rear axle is designed as a steering axle and that the Fulcrum of the superstructure on the undercarriage, in longitudinal direction seen, essentially midway between the front and the rear axle is arranged.
Aufgrund dieser Gestaltung des Unterwagens des Radbaggers wird die Stabilität des Gerätes wesentlich verbessert, da aufgrund der stark exzentrischen Anordnung des Drehpunktes der Knicklenkung nunmehr der Oberwagen in Längsrichtung gesehen, wie bei Radbaggern ohne Knicklenkung, weitgehend mittig angeordnet ist. Ferner entfällt auch die beim bekannten Radbagger mit Knicklenkung erforderliche Trennung zwischen Oberwagen und Antriebsaggregat, das Antriebsaggregat ist beim erfindungsgemäßen Radbagger in den Oberwagen integriert. Dadurch ist nicht nur die Stabilität des Radbaggers wesentlich verbessert, sondern es ist auch eine Rundumarbeit möglich, der Oberwagen kann gegenüber dem Unterwagen rundum gedreht werden, ohne dass eine Beeinträchtigung durch das Antriebsaggregat oder Sichtbeeinträchtigungen für den Fahrer bestehen.Due to this design of the undercarriage of the wheeled excavator the stability of the device is significantly improved since due to the highly eccentric arrangement of the fulcrum the articulated steering now seen the superstructure in the longitudinal direction, as with wheeled excavators without articulated steering, largely is arranged centrally. Furthermore, also eliminates the known Wheeled excavator with articulated steering required separation between superstructure and drive unit, the drive unit is in the wheel excavator according to the invention in the superstructure integrated. This is not only the stability of the wheeled excavator much improved, but it is also one All-round work possible, the superstructure can opposite the undercarriage to be turned all around without any impairment by the drive unit or visual impairments insist on the driver.
Ganz besonders bevorzugt ist vorgesehen, dass der Abstand des Drehpunktes von der hinteren Achse wenigstens dreimal größer als der Abstand des Drehpunktes von der vorderen Achse ist. Bei diesen Abmessungen fällt die Seitenstabilität unter Aufrechterhaltung der guten Manövrierfähigkeit nur um geringes ab. Exzentrisch auf das Schild des Radbaggers wirkende Kräfte weisen dabei nur einen kleinen Abstand zur Knickachse auf, wodurch sich die erforderlichen Lenkkräfte verringern.Very particularly preferably, it is provided that the distance the pivot point of the rear axle at least three times greater than the distance of the fulcrum from the front Axis is. With these dimensions, the lateral stability drops while maintaining good maneuverability only for a small amount. Eccentric on the sign of the wheeled excavator acting forces have only a small distance to the bending axis, resulting in the required steering forces reduce.
Um den Lenkvorgang für den Fahrer möglichst einfach zu gestalten, ist ferner vorgesehen, dass die Knicklenkung und die hintere Lenkachse kinematisch zwangsgekoppelt sind, d.h. beim Lenkvorgang durch den Fahrer werden gleichzeitig die lenkbare Hinterachse und die Knicklenkung gleichsinnig gelenkt.To make the steering process as easy as possible for the driver, is further provided that the articulation and the rear steering axle are kinematically positively coupled, i.e. during the steering process by the driver will be simultaneously the steerable rear axle and the articulated steering in the same direction directed.
Ferner ist bevorzugt vorgesehen, dass der maximale Knickwinkel der Knicklenkung auf ca. ± 25° beschränkt ist. Dadurch läßt sich noch eine weitere Stabilitätserhöhung für den Radbagger, auch bei Kurvenfahrt, erreichen. Die Manövrierfähigkeit wird jedoch erhalten, da eine Doppellenkung (Knicklenkung und lenkbare Hinterachse) vorgesehen sind.Furthermore, it is preferably provided that the maximum bending angle the articulated steering is limited to approx. ± 25 °. Thereby can still another increase in stability for reach the wheel excavator, even when cornering. The maneuverability is obtained, however, as a double steering (Articulated steering and steerable rear axle) are provided.
In weiterer vorteilhafter Ausgestaltung ist vorgesehen, dass an dem auf der Seite der vorderen Achse liegenden Ende des vorderen Unterwagenteils ein Schild angeordnet ist. Dabei ist bevorzugt des Schild höhenverstellbar und schwenkbar. Dadurch wird das Schild in Fahrtrichtung bewegt und das ungewollte seitliche Abfließen des Materials wird verhindert. Hingegen würde bei einer Achse mit Achsschenkellenkung das Schild schräg zur Fahrtrichtung geführt, wodurch das Material zum seitlichen Ablauf neigt.In a further advantageous embodiment is provided that at the end located on the side of the front axle the front undercarriage part a shield is arranged. The shield is preferably height adjustable and pivotable. This will move the sign in the direction of travel and the unwanted lateral flow of the material is prevented. On the other hand, with an axle with axle steering the sign led obliquely to the direction of travel, whereby the material tends to lateral flow.
Die Erfindung ist nachstehend anhand der Zeichnung beispielhaft näher erläutert. Diese zeigt in der einzigen Figur eine schematische Darstellung des Unterwagens eines erfindungsgemäßen Radbaggers.The invention is exemplified below with reference to the drawing explained in more detail. This shows in the only one Figure is a schematic representation of the undercarriage of a Wheel excavator according to the invention.
Von einem erfindungsgemäßen Radbagger ist in der Zeichnung
nur ein mit 1 bezeichneter Unterwagen dargestellt. Dieser
Unterwagen ist zweigeteilt, er weist nämlich ein vorderes
Unterwagenteil 2 und ein hinteres Unterwagenteil 3 auf,
welche über eine Knicklenkung miteinander verbunden sind,
der Drehpunkt dieser Knicklenkung ist mit 4 bezeichnet.From a wheel excavator according to the invention is in the drawing
only one designated 1 undercarriage shown. This
Undercarriage is divided into two, namely, it has a front
Undercarriage
Das vordere Unterwagenteil 2 nimmt eine vordere Achse 5
auf, welche Vorderräder 6 trägt. Das hintere Unterwagenteil
3 nimmt eine hintere Achse 7 auf, welches Hinterräder 8
trägt.The
Am vorderen Unterwagenteil ist vorderseitig über Tragarme 9
und eine Tragplatte 10 ein Schild 11 angeordnet, welches
heb- und senkbar sowie verschwenkbar ist, dazu erforderliche
Kolben-/Zylindereinheiten sind mit 12 bezeichnet. Auf
die genaue Ausbildung der Schildaufhängung kommt es im Rahmen
der vorliegenden Erfindung jedoch nicht näher an.At the front undercarriage part is front side on support arms. 9
and a
Wesentlich für die Ausgestaltung des Unterwagens 1 ist,
dass der Drehpunkt 4 der Knicklenkung deutlich näher an der
vorderen Achse 5 als an der hinteren Achse 7 angeordnet
ist, wie aus der Zeichnung deutlich hervorgeht. Der Abstand
zwischen dem Drehpunkt 4 und der vorderen Achse 5 ist mit a
bezeichnet, während der Abstand des Drehpunktes 4 der
Knicklenkung und der hinteren Achse 7 mit b bezeichnet
sind. Das Verhältnis b zu a ist dabei bevorzugt größer als
3, d.h. der Abstand b der hinteren Achse 7 zum Drehpunkt 4
ist wenigstens dreimal größer als der Abstand a zwischen
der vorderen Achse 5 und dem Drehpunkt 4.Essential for the design of the
Dadurch bedingt ist das hintere Unterwagenteil 3 deutlich
länger als das vordere Unterwagenteil 2, was es ermöglicht,
den kompletten Oberwagen des Radbaggers, welcher in der
Zeichnung nicht dargestellt ist, zusammen mit dem ebenfalls
nicht dargestellten Antriebsaggregat auf dem hinteren Unterwagenteil
3 anzuordnen. Zur Aufnahme des Oberwagens ist
am hinteren Unterwagenteil 3 ein Drehkranz 13 angedeutet.As a result, the
Ferner ist vorgesehen, dass die vordere Achse 5 als mit dem
Rahmen fest verbundene Starrachse ausgebildet ist, während
die hintere Achse 7 vorzugsweise als lenkbare Pendelachse
ausgebildet ist, bevorzugt in Form einer Achsschenkellenkachse.It is further provided that the
Um den Lenkvorgang des Unterwagens 1 zu vereinfachen, ist
dabei bevorzugt vorgesehen, dass die Knicklenkung und die
hintere Lenkachse 7 zwangsgekoppelt sind, diese Zwangskopplung
ist beim Ausführungsbeispiel von einem Gelenkgestänge
14 und einer zwischengeschalteten Kolben-/Zylindereinheit
15 gebildet, wobei das Gestänge 14 zum einen am vorderen
Unterwagenteil 2 und zum anderen an einem Lenkgestänge 16
der hinteren Lenkachse 7 angelenkt ist. Durch Betätigung
der Kolben-/Zylindereinheit 15 werden die Vorderräder 6 und
die Hinterräder 8 in gleichsinniger Richtung ausgelenkt.
Diese ausgelenkte Position des kompletten vorderen Unterwagenteils
2 und der Hinterräder ist in der Zeichnung gestrichelt
angedeutet.To simplify the steering operation of the
Bevorzugt ist die Anordnung der Knicklenkung im Zusammenwirken mit der hinteren Lenkachse 7 dabei so gewählt, dass der maximale Knickwinkel der Knicklenkung auf ca. ± 25° beschränkt ist. Da in dieser Maximalposition die Hinterräder 8 in etwa gleicher Weise ausgelenkt werden, lassen sich gleichwohl noch sehr enge Wenderadien realisieren, ohne allerdings die Stabilität des Oberwagens bei einer solchen Auslenkung wesentlich zu beeinträchtigen.Preferably, the arrangement of the articulated steering in cooperation with the rear steering axle 7 chosen so that the maximum bending angle of the articulated steering is limited to approx. ± 25 ° is. Because in this maximum position the rear wheels 8 are deflected in approximately the same way, can be nevertheless still very close turning radius realize, without however the stability of the superstructure in such a Significantly affect deflection.
Natürlich ist die Erfindung nicht auf das dargestellte Ausführungsbeispiel
beschränkt. Weitere Ausgestaltungen sind
möglich, ohne den Grundgedanken zu verlassen. So kann beispielsweise
die Knicklenkung selbst und die Zwangskopplung
(Gestänge 14) mit dem Lenkgestänge 16 der hinteren Lenkachse
7 auch auf andere Weise realisiert werden, wesentlich
ist die Anordnung des Drehpunktes 4 der Knicklenkung, welche
eine in Längsrichtung gesehen mittige Anordnung des
Oberwagens auf dem Unterwagen, und zwar nur auf dem hinteren
Unterwagenteil 3 ermöglicht.Of course, the invention is not limited to the illustrated embodiment
limited. Further embodiments are
possible without leaving the basic idea. So, for example
the articulated steering itself and the forced coupling
(Linkage 14) with the
Claims (6)
- A wheeled excavator comprising a lower chassis with a running gear having a rigid front axle (5) and a rear axle (7) and an upper chassis which is arranged on the lower chassis and which is provided with a drive unit, wherein the lower chassis has a centre pivot steering arrangement with a front lower chassis portion (2) carrying the front axle (5) and a rear lower chassis portion (3) carrying the rear axle (7), wherein the pivot point (4) of the centre pivot steering arrangement is arranged markedly closer to the front axle (50 than to the rear axle (6), and wherein the upper chassis is arranged on the rear lower chassis portion (3) which is markedly longer than the front lower chassis portion (2),
characterised in that
the rear axle (7) is in the form of a steering axle and the pivot point of the upper chassis on the lower chassis, as viewed in the longitudinal direction, is arranged substantially centrally between the front and rear axles (5, 7). - A wheeled excavator according to claim 1 characterised in that the spacing b of the pivot point (4) from the rear axle (7) is at least three times greater than the spacing a of the pivot point (4) from the front axle (5).
- A wheeled excavator according to claim 1 or claim 2 characterised in that the centre pivot steering arrangement and the rear steering axle (7) are kinematically positively coupled (14, 15).
- A wheeled excavator according to one or more of claims 1, 2 and 3 characterised in that the maximum pivot angle of the centre pivot steering arrangement is limited to about ± 25°.
- A wheeled excavator according to one or more of claims 1 to 4 characterised in that a blade (11) is arranged at the end, which is on the side of the front axle (12), of the front lower chassis portion (2).
- A wheeled excavator according to claim 5 characterised in that the blade (11) is displaceable in respect of height and pivotable.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10113340 | 2001-03-20 | ||
DE10113340A DE10113340A1 (en) | 2001-03-20 | 2001-03-20 | wheel excavator |
PCT/EP2002/002557 WO2002075060A1 (en) | 2001-03-20 | 2002-03-08 | Wheeled excavator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1370732A1 EP1370732A1 (en) | 2003-12-17 |
EP1370732B1 true EP1370732B1 (en) | 2004-09-29 |
Family
ID=7678124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02712939A Expired - Lifetime EP1370732B1 (en) | 2001-03-20 | 2002-03-08 | Wheeled excavator |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1370732B1 (en) |
AT (1) | ATE278071T1 (en) |
DE (2) | DE10113340A1 (en) |
ES (1) | ES2224055T3 (en) |
WO (1) | WO2002075060A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2004280583A1 (en) * | 2003-10-03 | 2005-04-21 | Michael T. Lumbers | Multi-function work machine |
DE102016105278B3 (en) * | 2016-03-22 | 2017-06-08 | Klaus Jourdan | Protected wheeled vehicle |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE819632C (en) * | 1949-10-30 | 1951-11-05 | Erhard Lauster | Civil engineering vehicle for various purposes |
US3347577A (en) * | 1964-12-24 | 1967-10-17 | Allis Chalmers Mfg Co | Pivot construction |
DE1265048B (en) * | 1966-03-15 | 1968-03-28 | Int Harvester Co | Steering for earthmoving vehicles, especially shovel loaders |
US3977547A (en) * | 1971-06-07 | 1976-08-31 | Holopainen Vaino J | Material handling apparatus |
US3771241A (en) * | 1972-05-05 | 1973-11-13 | Koehring Co | Steering mechanism for trencher |
US4565257A (en) * | 1984-02-08 | 1986-01-21 | J. I. Case Company | Multi-mode steering system |
JPS61126230A (en) * | 1984-11-21 | 1986-06-13 | Toyoda Autom Loom Works Ltd | Engine stall preventing device for loading and unloading working vehicle |
US4802545A (en) * | 1986-10-15 | 1989-02-07 | J. I. Case Company | Steering control system for articulated vehicle |
GB8810886D0 (en) * | 1988-05-09 | 1988-06-15 | Knackstedt J S | Material handling machine |
DE4104283A1 (en) * | 1990-02-15 | 1991-08-22 | Zahnradfabrik Friedrichshafen | Multipurpose vehicle for building site - has hydraulic transmission system which drives both axles |
DE4137382C1 (en) * | 1991-11-13 | 1993-04-29 | Karl Schaeff Gmbh & Co, 7183 Langenburg, De | Utility site-work vehicle - is articulated with fixed wheels on front carriage and steering wheels on rear carriage. |
DE19720336A1 (en) * | 1997-05-15 | 1998-11-19 | Johannes Hermann Bergmann | Combination working vehicle |
GB2356611B (en) * | 2000-10-27 | 2003-08-20 | Translift Engineering Ltd | Lift truck |
-
2001
- 2001-03-20 DE DE10113340A patent/DE10113340A1/en not_active Withdrawn
-
2002
- 2002-03-08 ES ES02712939T patent/ES2224055T3/en not_active Expired - Lifetime
- 2002-03-08 EP EP02712939A patent/EP1370732B1/en not_active Expired - Lifetime
- 2002-03-08 DE DE50201161T patent/DE50201161D1/en not_active Expired - Lifetime
- 2002-03-08 WO PCT/EP2002/002557 patent/WO2002075060A1/en not_active Application Discontinuation
- 2002-03-08 AT AT02712939T patent/ATE278071T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2002075060A1 (en) | 2002-09-26 |
ATE278071T1 (en) | 2004-10-15 |
EP1370732A1 (en) | 2003-12-17 |
ES2224055T3 (en) | 2005-03-01 |
DE10113340A1 (en) | 2002-10-10 |
DE50201161D1 (en) | 2004-11-04 |
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