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EP1131499B1 - Wheeled shovel loader - Google Patents

Wheeled shovel loader Download PDF

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Publication number
EP1131499B1
EP1131499B1 EP99950603A EP99950603A EP1131499B1 EP 1131499 B1 EP1131499 B1 EP 1131499B1 EP 99950603 A EP99950603 A EP 99950603A EP 99950603 A EP99950603 A EP 99950603A EP 1131499 B1 EP1131499 B1 EP 1131499B1
Authority
EP
European Patent Office
Prior art keywords
boom
shovel
additional arm
displacement
shovel loader
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
Application number
EP99950603A
Other languages
German (de)
French (fr)
Other versions
EP1131499A1 (en
Inventor
Hans Schaeff
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.)
Schaeff Terex GmbH and Co KG
Original Assignee
Schaeff Terex GmbH and Co KG
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 Schaeff Terex GmbH and Co KG filed Critical Schaeff Terex GmbH and Co KG
Publication of EP1131499A1 publication Critical patent/EP1131499A1/en
Application granted granted Critical
Publication of EP1131499B1 publication Critical patent/EP1131499B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/308—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working outwardly
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3405—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism
    • E02F3/3408—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism of the parallelogram-type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S414/00—Material or article handling
    • Y10S414/13—Handlers utilizing parallel links

Definitions

  • the invention relates to a mobile shovel loader the features of the preamble of claim 1.
  • Such Schanfellader is known from DE-A-3 341 614.
  • Shovel loaders are well known and have a wide range of uses.
  • these shovel loaders are used for loading used by trucks with earth and building materials.
  • When loading of high trucks or large dump trucks in particular with light bulk goods such as coal, coke, wood chips, Garbage, etc. become a shovel loader with a very large loading height required.
  • Such shovel loaders have for example via a blade pivot point of at least five meters above the level.
  • To reach this loading height on the one hand there are very large shovel loaders with corresponding long articulated booms with a corresponding Dead weight and high engine power (for example 30 tons dead weight at 300 HP) for loading Heavy goods. These are for loading light goods Shovel loaders, however, too big and too expensive.
  • Telescopic forklifts with light goods buckets which are not very popular in practice because they are are relatively slow and very susceptible to wear.
  • the at Telescopes used telescopes run in sliding guides, those with dust and dirt pollution and faster Wear sliding speed and lead to failures.
  • the invention is based on the object the loading height of a relatively small mobile shovel loader to increase from large series production so that this without sacrificing stability for loading high Trucks with light bulk goods can be used.
  • the Additional boom from a position folded on the boom arm at the earliest after the boom arm has passed through its horizontal position when swiveling upwards. Thereby it is ensured that an extension of the entire boom only occurs above the horizontal position of the cantilever arm. Conversely, it is of course also ensured that with a downward pivoting movement of the cantilever arm the additional boom at the latest before the passage of the Cantilever arm completely due to its horizontal position is folded.
  • the Means for controlling the adjustment of the additional boom at least one angle sensor.
  • the means comprise to control the adjustment of the additional boom at least a displacement sensor.
  • the auxiliary boom for extending the loading shovel in essentially horizontal direction also below the horizontal position of the cantilever arm adjustable, the cantilever arm to compensate for by adjusting the additional boom caused circular path of the loading shovel in a so-called floating position is switchable.
  • the Additional boom can be adjusted forward. Before from this Position of the cantilever arm can be raised to Compliance with the tipping safety of the additional boom again be fully retracted. This is advantageous to release the lifting movement by the extension arm electrical angle or displacement sensor provided.
  • the length is first link and the second link essentially equal.
  • the length is first handlebars smaller or larger than the length of the second Handlebars. Due to this uneven configuration of the lengths of the first link and second link can be the end position of the additional boom affected in the fully extended position become.
  • the first drivers i.e. the chassis is remotely linked to the handlebar, shorter than the length of the second handlebar that is closer to the Chassis are articulated on the boom arm, so the Additional boom in relation to the fully raised Cantilever arm has a relatively flat positioning.
  • FIG. 1 shows a wheeled tire according to the invention Bucket loader 1 with articulated steering. It goes without saying the invention also with other conventional shovel loaders with axle steering, crawler track and the like realizable.
  • a cantilever arm 3 At one the front section of the Shovel loader 1 forming vehicle body 2 (loader frame) a cantilever arm 3 is pivotable about a cantilever pivot axis 4 articulated (see also Figure 3).
  • One for pivoting of the boom arm 3 serving first lifting cylinder 5 grips the loading frame at one end and roughly at the other in the middle of the cantilever arm 3.
  • the boom 3 components, Boom pivot axis 4 and lifting cylinder 5 largely correspond the series parts of a standard shovel loader.
  • the shovel loader 1 comprises an additional boom 7, the length of which is illustrated and described Embodiment substantially shorter than the length of the cantilever arm 3.
  • the additional boom 7 is by means of a first link 8 and a second link 9 articulated on the extension arm in the manner of a parallel link, that it is in its folded position (cf. also Figure 2) comes to rest directly on the cantilever arm 3.
  • the handlebars 8, 9 can each be individual handlebars or also in particular symmetrically arranged pairs of Handlebars.
  • the first link 8 is on one of the Cantilever pivot axis 4 far end of the cantilever arm 3 around an axis of rotation 6 is articulated, which is the blade tilt axis of the boom 3 acts during the Handlebar 9 attacks approximately in the area of the middle of the cantilever arm 3.
  • the Linkage axis 18 of the second link 9 on the extension arm 3 with the pivot axis of the first lifting cylinder 5 together what of course different in other embodiments can be designed.
  • the handlebars 8, 9 are on the Additional boom 7 arranged, in the area of about Middle of the additional boom 7 (handlebar 8) and at one to Shovel loader 1 pointing end 19 (handlebar 9).
  • a second Lift cylinder 15 is provided, the one end approximately in the middle of the Handlebar 9 and at the other end on the boom arm 3 or on the boom pivot axis 4 is articulated.
  • the second lifting cylinder 15 is paired arrangements of hydraulic cylinders act, provided the size or to be overcome Load of the loader requires this.
  • a loading shovel 13 At the end of the additional boom opposite the end 19 7 is a loading shovel 13 about a shovel pivot axis 10 pivoted.
  • the operation of the loading shovel 13 is carried out by means of a tilting linkage 11, 12, one (approximately in the middle) to the additional boom 7 articulated rocker arm 11 and one connecting the rocker arm 12 with the loading shovel 13 Includes tilting rod 11.
  • the actuation of the tilt linkage 11, 12 takes place by means of a tilt cylinder 14, one end of a middle portion of the rocker arm 12 and at the other end on the one facing the shovel loader 1 End 19 of the additional boom 7 attacks.
  • Ladeschaufel 13, tilt linkage 11, 12 and tilt cylinder 14 can correspond to normal series device and from the example shown differ.
  • an angle sensor 16 or 17 is arranged in each case.
  • the angle sensors 16, 17 serve to determine the relative angle between boom 3 and vehicle body 2 or the position of the loading shovel 13 to the additional boom 7. Using those determined by means of the angle sensors 16, 17 An angle or position value is carried out electronically Control of the hydraulic cylinders 14, 15.
  • the angle sensor 16 is part of means for controlling the Adjustment of the additional boom 7, as described below becomes.
  • Other suitable sensors are used, for example displacement sensors, which are preferred arranged on the cantilever arm 3 or on the first lifting cylinder 5 are.
  • the adjustment of the additional boom 7 from a position B1 of the axis of rotation 6 of the cantilever arm 3, which is about 10 ° above the horizontal.
  • an adjustment of the additional boom 7 can also start in other locations, but preferably all lie above the maximum radius in order to also be used for loading work exceeding on slightly sloping terrain to avoid the maximum outreach or the safety against tipping over to ensure.
  • the position B1 of the axis of rotation 6 corresponds to a position B2 Blade articulation axis 10, which is the end point of the previous Circular path K2 of the blade articulation axis 10, since now by actuation and the associated unfolding of the additional boom 7, the blade articulation axis 10 at the end of the additional boom 7 is moved upward more than up the circular path K2.
  • the parallel hold function through hydraulic electronic adjustment of the angular position between Loading shovel and additional boom 7 is thus a folding out movement of the additional boom 7 superimposed so that after reaching position A through the axis of rotation 6 of the cantilever arm 3 the blade articulation axis 10 of the additional boom 7 Has reached the highest position C.
  • FIGs 4a to 4c The horizontal adjustment of the loading shovel below the The horizontal position of the cantilever arm 3 is in Figures 4a to 4c illustrates.
  • Figure 4a shows the invention Shovel loader of Figure 1 in the basic position with lowered Boom and dump bucket 13.
  • the Move the shovel loader in the direction of the load L until there is a sufficient amount of cargo in the loading shovel 13 is located.
  • the boom can now be operated according to the invention of the additional boom 7 are moved forward, as this is shown in Figures 4b and 4c. This will the second lifting cylinder 15 is actuated and the links 8, 9 are adjusted.
  • the cantilever arm 3 is on a so-called Floating position switched, in which he by means of first lifting cylinder 5 is operated such that a compensation caused by the adjustment of the additional boom 7 Circular path of the loading shovel 13 takes place, so that the loading shovel 13 along a substantially horizontal Level, determined by the floor, moves.
  • FIG 5 is a corresponding application of the horizontal Adjustment along a distance from the floor horizontal level using the example of a forklift truck illustrated.
  • Also in this raised position may refer to the above horizontal movement explained in FIGS. 4a to 4c exploited the additional boom 7 according to the invention as illustrated by the dash-dotted line, without the shovel loader moving forward or backward must be followed.
  • the particular advantage of the invention lies in the fact that that the shovel loader according to the invention with relatively simple Averaging by exchanging the cantilever arm from a series shovel loader can be obtained without the stability significantly changed by an overlong boom is and with all the working tools of the series device can continue to be used.
  • a small serial shovel loader for upload work be used, the additional weight of the additional boom with an additional counterweight (reference number 20 in Figure 1) is compensated.
  • the circular paths K1 and K2 can coincide in the most favorable case. If, however, as in the illustrated embodiment run apart from each other, so must this shift in focus due to the additional counterweight 20 be balanced.
  • the invention is not limited to that in the Figures illustrated embodiment limited, but also includes other structural modifications.
  • the number of handlebars and their Articulation points can be chosen freely, without the frame of the Invention is left.
  • the boom arm 3 and / or the additional frame 7 equipped as desired be, for example as a so-called mono boom boom, as a hollow box construction or as - as an example shown - frame formed from two side parts.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Operation Control Of Excavators (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

The present invention relates to a wheeled shovel loader that comprises a boom (3) capable of pivoting about an axis (4) as well as a loading shovel (13) that can be actuated by a tilting structure (11, 12). According to this invention, at least one additional arm (7) connecting the boom (3) and the loading shovel (13) is hinged so as to be capable of displacement in the same way as a parallelogram on said arm (3) under the action of at least a first connecting rod (8) and at least a second connecting rod (9). The shovel loader of the present invention comprises means for controlling the displacement of the additional arm (7) according to the angular position of the boom (3) relative to its pivot axis (4), as well as means for maintaining the loading shovel (13) in a horizontal position.

Description

Die Erfindung betrifft einen fahrbaren Schaufellader mit den Merkmalen des Oberbegriffs von Anspruch 1. Ein solcher Schanfellader ist aus DE-A-3 341 614 bekannt.The invention relates to a mobile shovel loader the features of the preamble of claim 1. Such Schanfellader is known from DE-A-3 341 614.

Derartige, beispielsweise auf Raupen oder Reifen fahrbare Schaufellader sind bekannt und haben ein breites Einsatzfeld. Insbesondere werden diese Schaufellader zum Beladen von Lastautos mit Erde und Baumaterial verwendet. Beim Beladen von hohen Lastautos oder großen Dumperfahrzeugen insbesondere mit Leichtschüttgütern wie Kohle, Koks, Holzschnitzel, Müll usw. werden Schaufellader mit einer sehr großen Ladehöhe benötigt. Derartige Schaufellader verfügen beispielsweise über einen Schaufeldrehpunkt von mindestens fünf Metern über Planum. Um diese Ladehöhe zu erreichen, gibt es einerseits sehr große Schaufellader mit entsprechend hoch angelenkten langen Auslegern mit einem entsprechenden Eigengewicht und großer Motorleistung (beispielsweise 30 Tonnen Eigengewicht bei 300 PS) zum Verladen von Schwergütern. Zum Verladen von Leichtgütern sind diese Schaufellader jedoch zu groß und zu teuer. Andererseits gibt es sogenannte Teleskopstapler mit Leichtgutschaufeln, die in der Praxis jedoch nicht sehr beliebt sind, da sie relativ langsam und sehr verschleißanfällig sind. Die bei Teleskopstaplern verwendeten Teleskope laufen in Gleitführungen, die bei Staub- und Schmutzbelastung und schneller Gleitgeschwindigkeit verschleißen und zu Ausfällen führen. Such, for example, mobile on caterpillars or tires Shovel loaders are well known and have a wide range of uses. In particular, these shovel loaders are used for loading used by trucks with earth and building materials. When loading of high trucks or large dump trucks in particular with light bulk goods such as coal, coke, wood chips, Garbage, etc. become a shovel loader with a very large loading height required. Such shovel loaders have for example via a blade pivot point of at least five meters above the level. To reach this loading height, on the one hand there are very large shovel loaders with corresponding long articulated booms with a corresponding Dead weight and high engine power (for example 30 tons dead weight at 300 HP) for loading Heavy goods. These are for loading light goods Shovel loaders, however, too big and too expensive. on the other hand there are so-called telescopic forklifts with light goods buckets, which are not very popular in practice because they are are relatively slow and very susceptible to wear. The at Telescopes used telescopes run in sliding guides, those with dust and dirt pollution and faster Wear sliding speed and lead to failures.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, die Ladehöhe eines relativ kleinen fahrbaren Schaufelladers aus der Großserienproduktion derart zu erhöhen, daß dieser ohne Abstriche bei der Standsicherheit zum Beladen hoher Lastautos mit Leichtschüttgütern verwendbar ist.Proceeding from this, the invention is based on the object the loading height of a relatively small mobile shovel loader to increase from large series production so that this without sacrificing stability for loading high Trucks with light bulk goods can be used.

Zur Lösung dieser Aufgabe wird ein Schaufellader mit den Merkmalen des Anspruches 1 vorgeschlagen. Demnach weist der Schaufellader einen Zusatzausleger auf, der in Art eines Parallellenkers mittels erster Lenker und zweiter Lenker an dem Auslegerarm verstellbar angelenkt ist und den Auslegerarm und das Werkzeug verbindet. Beim Nachobenverschwenken des Auslegerarms wird durch Betätigen des an den Auslegerarm angelenkten Zusatzauslegers eine Verlängerung des Gesamtauslegers erreicht. Erfindungsgemäß verfügt der Schaufellader des weiteren über Mittel zur Steuerung der Verstellung des Zusatzauslegers in Abhängigkeit von der Winkelstellung des Auslegerarms bezüglich der Auslegerschwenkachse. Durch diese Mittel wird gewährleistet, daß ein Ausklappen des Zusatzauslegers aus seiner am Auslegerarm eingeklappten Position erst ab einer vorgegebenen Winkelstellung des Auslegerarms erfolgt, wodurch eine die Standsicherheit des Schaufelladers beeinträchtigende Verlängerung des Auslegerarms ausgeschlossen ist. Durch die weiterhin erfindungsgemäß vorgesehenen Mittel zur Parallelhaltung der Ladeschaufel wird vermieden, daß beim Anheben der Ladeschaufel in der Ladeschaufel befindliches Ladegut herausfällt.A shovel loader with the Features of claim 1 proposed. Accordingly, the Shovel loader on an additional boom, which in the manner of a Parallel link by means of the first handlebar and the second handlebar the cantilever arm is articulated and the cantilever arm and the tool connects. When swiveling up of the cantilever arm is activated by pressing the on the cantilever arm articulated jib an extension of the Total boom reached. According to the Shovel loader further via means for controlling the Adjustment of the additional boom depending on the Angular position of the boom arm with respect to the boom pivot axis. These funds ensure that unfolding the additional boom from its on the boom arm folded position only from a predetermined Angular position of the cantilever arm takes place, which a Extension impairing the stability of the shovel loader of the cantilever arm is excluded. Through the means provided according to the invention for parallel holding the loading shovel is avoided when lifting the loading shovel load in the loading shovel fall out.

In Ausgestaltung der Erfindung erfolgt eine Verstellung des Zusatzauslegers aus einer am Auslegerarm eingeklappten Position frühestens nach Durchtritt des Auslegerarms durch seine Horizontallage bei Aufwärtsschwenkbewegung. Dadurch wird gewährleistet, daß eine Verlängerung des Gesamtauslegers erst oberhalb der Horizontallage des Auslegerarms eintritt. Umgekehrt wird selbstverständlich auch sichergestellt, daß bei einer Abwärtsschwenkbewegung des Auslegerarms der Zusatzausleger spätestens vor Durchtritt des Auslegerarms durch seine Horizontallage wieder vollständig eingeklappt ist.In an embodiment of the invention, the Additional boom from a position folded on the boom arm at the earliest after the boom arm has passed through its horizontal position when swiveling upwards. Thereby it is ensured that an extension of the entire boom only occurs above the horizontal position of the cantilever arm. Conversely, it is of course also ensured that with a downward pivoting movement of the cantilever arm the additional boom at the latest before the passage of the Cantilever arm completely due to its horizontal position is folded.

In vorteilhafter Ausgestaltung der Erfindung umfassen die Mittel zur Steuerung der Verstellung des Zusatzauslegers mindestens einen Winkelsensor.In an advantageous embodiment of the invention, the Means for controlling the adjustment of the additional boom at least one angle sensor.

In anderer Ausgestaltung der Erfindung umfassen die Mittel zur Steuerung der Verstellung des Zusatzauslegers mindestens einen Wegsensor.In another embodiment of the invention, the means comprise to control the adjustment of the additional boom at least a displacement sensor.

In besonders vorteilhafter Ausgestaltung der Erfindung ist der Zusatzausleger zum Ausfahren der Ladeschaufel in im wesentlichen horizontaler Richtung auch unterhalb der Horizontallage des Auslegerarms verstellbar, wobei der Auslegerarm zum Ausgleich der durch die Verstellung des Zusatzauslegers verursachten Kreisbahn der Ladeschaufel in eine sogenannte Schwimmstellung schaltbar ist. Durch diese Maßnahme kann beispielsweise in besonderen Lenksituationen, in denen der Schaufellader nicht näher an den Ort der Aufnahme bzw. Abgabe von zu bewegendem Gut fahrbar ist, der Zusatzausleger nach vorne verstellt werden. Bevor aus dieser Stellung der Auslegerarm angehoben werden kann, muß zur Einhaltung der Kippsicherheit der Zusatzausleger wieder vollständig eingefahren sein. Dazu ist vorteilhafterweise zur Freigabe der Hubbewegung durch den Auslegerarm ein elektrischer Winkel- oder Weggeber vorgesehen. In a particularly advantageous embodiment of the invention the auxiliary boom for extending the loading shovel in essentially horizontal direction also below the horizontal position of the cantilever arm adjustable, the cantilever arm to compensate for by adjusting the additional boom caused circular path of the loading shovel in a so-called floating position is switchable. Through this Measure can, for example, in special steering situations, in which the shovel loader is not closer to the location of the shot or delivery of goods to be moved is mobile, the Additional boom can be adjusted forward. Before from this Position of the cantilever arm can be raised to Compliance with the tipping safety of the additional boom again be fully retracted. This is advantageous to release the lifting movement by the extension arm electrical angle or displacement sensor provided.

In weiterer Ausgestaltung der Erfindung ist die Länge der ersten Lenker und der zweiten Lenker im wesentlichen gleich.In a further embodiment of the invention, the length is first link and the second link essentially equal.

In anderer Ausgestaltung der Erfindung ist die Länge der ersten Lenker kleiner oder größer als die Länge der zweiten Lenker. Durch diese ungleiche Ausgestaltung der Längen der ersten Lenker und zweiten Lenker kann die Endlage des Zusatzauslegers in vollständig ausgeklappter Position beeinflußt werden. Sind beispielsweise die ersten Lenker, d.h. die Fahrgestell fern am Auslegerarm angelenkten Lenker, kürzer als die Länge der zweiten Lenker, die näher zum Fahrgestell hin am Auslegerarm angelenkt sind, so weist der Zusatzausleger im Verhältnis zum vollständig angehobenen Auslegerarm eine relativ flache Positionierung auf.In another embodiment of the invention, the length is first handlebars smaller or larger than the length of the second Handlebars. Due to this uneven configuration of the lengths of the first link and second link can be the end position of the additional boom affected in the fully extended position become. For example, are the first drivers, i.e. the chassis is remotely linked to the handlebar, shorter than the length of the second handlebar that is closer to the Chassis are articulated on the boom arm, so the Additional boom in relation to the fully raised Cantilever arm has a relatively flat positioning.

Weitere vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.Further advantageous configurations are in the subclaims described.

Es versteht sich, daß die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the above and the Features to be explained below not only in the combination given in each case, but also in others Combinations or alone can be used without to leave the scope of the present invention.

Die Erfindung ist anhand eines Ausführungsbeispiels in der Zeichnung dargestellt und wird im folgenden unter Bezugnahme auf die Zeichnung näher beschrieben.

Figur 1
zeigt einen erfindungsgemäßen Schaufellader in seitlicher Ansicht mit vollständig eingefahrenem und vollständig ausgefahrenem Ausleger.
Figur 2
zeigt in vergrößerter Darstellung den Frontabschnitt des Schaufelladers der Figur 1 mit dem Ausleger in ungefähr horizontaler Lage.
Figur 3
zeigt im vergrößerten Ausschnitt aus der Figur 1 den Frontabschnitt des erfindungsgemäßen Schaufelladers mit vollständig eingeklappten und vollständig ausgefahrenem Ausleger.
Figuren 4a bis 4c
zeigen in aufeinanderfolgender Abfolge die horizontale Verstellung des Auslegers des erfindungsgemäßen Schaufelladers der Figur 1, bei der die Ladeschaufel entlang des Bodens nach vorn verfahren wird.
Figur 5
zeigt den erfindungsgemäßen Schaufellader der Figur 1 mit einer Stapelgabel als die Ladeschaufel ersetzendes Arbeitswerkzeug in horizontaler Verstellung des Auslegers entlang einer erhöhten horizontalen Ebene.
The invention is illustrated in the drawing using an exemplary embodiment and is described in more detail below with reference to the drawing.
Figure 1
shows a shovel loader according to the invention in a side view with the boom fully retracted and fully extended.
Figure 2
shows in an enlarged view the front portion of the shovel loader of Figure 1 with the boom in an approximately horizontal position.
Figure 3
shows the enlarged section of Figure 1, the front portion of the shovel loader according to the invention with the boom fully folded and fully extended.
Figures 4a to 4c
show in successive sequence the horizontal adjustment of the boom of the shovel loader according to the invention of Figure 1, in which the loading shovel is moved forward along the bottom.
Figure 5
shows the shovel loader of Figure 1 according to the invention with a stacking fork as a working tool replacing the loading shovel in a horizontal adjustment of the boom along an elevated horizontal plane.

Figur 1 zeigt einen auf Reifen fahrbaren erfindungsgemäßen Schaufellader 1 mit Knicklenkung. Selbstverständlich ist die Erfindung auch mit anderen konventionellen Schaufelladern mit Achsschenkellenkung, Raupenfahrwerk und dergleichen realisierbar. An einem den Frontabschnitt des Schaufelladers 1 bildenden Fahrzeugaufbau 2 (Ladergestell) ist ein Auslegerarm 3 um eine Auslegerschwenkachse 4 verschwenkbar angelenkt (vgl. auch Figur 3). Ein zur Verschwenkung des Auslegerarms 3 dienender erster Hubzylinder 5 greift einenends an dem Ladergestell und anderenends etwa mittig an dem Auslegerarm 3 an. Die Bauteile Auslegerarm 3, Auslegerschwenkachse 4 und Hubzylinder 5 entsprechen weitgehendst den Serienteilen eines handelsüblichen Schaufelladers.FIG. 1 shows a wheeled tire according to the invention Bucket loader 1 with articulated steering. It goes without saying the invention also with other conventional shovel loaders with axle steering, crawler track and the like realizable. At one the front section of the Shovel loader 1 forming vehicle body 2 (loader frame) a cantilever arm 3 is pivotable about a cantilever pivot axis 4 articulated (see also Figure 3). One for pivoting of the boom arm 3 serving first lifting cylinder 5 grips the loading frame at one end and roughly at the other in the middle of the cantilever arm 3. The boom 3 components, Boom pivot axis 4 and lifting cylinder 5 largely correspond the series parts of a standard shovel loader.

Erfindungsgemäß umfaßt der Schaufellader 1 einen Zusatzausleger 7, dessen Länge in dem dargestellten und beschriebenen Ausführungsbeispiel im wesentlichen etwas kürzer als die Länge des Auslegerarms 3 ist. Der Zusatzausleger 7 ist mittels eines ersten Lenkers 8 und eines zweiten Lenkers 9 an dem Auslegerarm in Art eines Parallellenkers derart angelenkt, daß er in seiner eingeklappten Position (vgl. auch Figur 2) direkt auf dem Auslegerarm 3 zu liegen kommt. Bei den Lenkern 8, 9 kann es sich jeweils um einzelne Lenker oder auch um insbesondere symmetrisch angeordnete Paare von Lenkern handeln. Der erste Lenker 8 ist dabei an einem der Auslegerschwenkachse 4 fernen Ende des Auslegerarms 3 um eine Drehachse 6 angelenkt, bei der es sich um die Schaufelkippachse des Serienauslegers 3 handelt, während der Lenker 9 etwa im Bereich der Mitte des Auslegerarms 3 angreift. In dem dargestellten Ausführungsbeispiel fällt die Anlenkachse 18 des zweiten Lenker 9 an dem Auslegerarm 3 mit der Anlenkachse des ersten Hubzylinders 5 zusammen, was selbstverständlich bei anderen Ausführungsformen unterschiedlich ausgestaltet sein kann.According to the shovel loader 1 comprises an additional boom 7, the length of which is illustrated and described Embodiment substantially shorter than the length of the cantilever arm 3. The additional boom 7 is by means of a first link 8 and a second link 9 articulated on the extension arm in the manner of a parallel link, that it is in its folded position (cf. also Figure 2) comes to rest directly on the cantilever arm 3. at the handlebars 8, 9 can each be individual handlebars or also in particular symmetrically arranged pairs of Handlebars. The first link 8 is on one of the Cantilever pivot axis 4 far end of the cantilever arm 3 around an axis of rotation 6 is articulated, which is the blade tilt axis of the boom 3 acts during the Handlebar 9 attacks approximately in the area of the middle of the cantilever arm 3. In the illustrated embodiment, the Linkage axis 18 of the second link 9 on the extension arm 3 with the pivot axis of the first lifting cylinder 5 together what of course different in other embodiments can be designed.

Mit ihrem jeweils anderen Ende sind die Lenker 8, 9 an dem Zusatzausleger 7 angeordnet, und zwar im Bereich etwa der Mitte des Zusatzauslegers 7 (Lenker 8) und an einem zum Schaufellader 1 hin weisenden Ende 19 (Lenker 9). Zur Verstellung des Zusatzauslegers 7 aus seiner und in seine eingeklappte Position an dem Auslegerarm 3 ist ein zweiter Hubzylinder 15 vorgesehen, der einenends etwa mittig an dem Lenker 9 und anderenends am Auslegerarm 3 bzw. an der Auslegerschwenkachse 4 angelenkt ist. Selbstverständlich sind auch andere Anlenkungen des zweiten Hubzylinders 15 als auch der weiteren zur Betätigung des Gesamtauslegers und der Ladeschaufel notwendigen Stellzylinder möglich. Sowohl bei dem ersten als auch dem zweiten Hubzylinder kann es sich jeweils um paarweise Anordnungen von Hydraulikzylindern handeln, sofern die Größe bzw. die zu bewältigende Last des Laders dies erfordert.With their respective other ends, the handlebars 8, 9 are on the Additional boom 7 arranged, in the area of about Middle of the additional boom 7 (handlebar 8) and at one to Shovel loader 1 pointing end 19 (handlebar 9). For adjustment of the additional boom 7 out of his and in his folded Position on the cantilever arm 3 is a second Lift cylinder 15 is provided, the one end approximately in the middle of the Handlebar 9 and at the other end on the boom arm 3 or on the boom pivot axis 4 is articulated. Of course also other articulations of the second lifting cylinder 15 than also the other for actuating the entire boom and necessary actuating cylinder of the loading shovel possible. Either with the first as well as the second lifting cylinder it can are paired arrangements of hydraulic cylinders act, provided the size or to be overcome Load of the loader requires this.

An dem dem Ende 19 gegenüberliegenden Ende des Zusatzauslegers 7 ist eine Ladeschaufel 13 um eine Schaufelanlenkachse 10 verschwenkbar angelenkt. Die Betätigung der Ladeschaufel 13 erfolgt mittels eines Kippgestänges 11, 12, das einen (etwa mittig) an den Zusatzausleger 7 angelenkten Kipphebel 11 und eine den Kipphebel 12 mit der Ladeschaufel 13 verbindende Kippstange 11 umfaßt. Die Betätigung des Kippgestänges 11, 12 erfolgt dabei mittels eines Kippzylinders 14, der einenends an einem mittleren Abschnitt des Kipphebels 12 und anderenends an dem zum Schaufellader 1 weisenden Ende 19 des Zusatzauslegers 7 angreift. Ladeschaufel 13, Kippgestänge 11, 12 sowie Kippzylinder 14 können dem normalen Seriengerät entsprechen und vom abgebildeten Beispiel abweichen.At the end of the additional boom opposite the end 19 7 is a loading shovel 13 about a shovel pivot axis 10 pivoted. The operation of the loading shovel 13 is carried out by means of a tilting linkage 11, 12, one (approximately in the middle) to the additional boom 7 articulated rocker arm 11 and one connecting the rocker arm 12 with the loading shovel 13 Includes tilting rod 11. The actuation of the tilt linkage 11, 12 takes place by means of a tilt cylinder 14, one end of a middle portion of the rocker arm 12 and at the other end on the one facing the shovel loader 1 End 19 of the additional boom 7 attacks. Ladeschaufel 13, tilt linkage 11, 12 and tilt cylinder 14 can correspond to normal series device and from the example shown differ.

An der Auslegerschwenkachse 4 sowie an der Schaufelanlenkachse 10 ist jeweils ein Winkelsensor 16 bzw. 17 angeordnet. Die Winkelsensoren 16, 17 dienen zur Feststellung des relativen Winkels zwischen Auslegerarm 3 und Fahrzeugaufbau 2 bzw. der Stellung der Ladeschaufel 13 zu dem Zusatzausleger 7. Anhand der mittels der Winkelsensoren 16, 17 festgestellten Winkel- bzw. Positionswerte erfolgt eine elektronische Ansteuerung der Hydraulikzylinder 14, 15. Der Winkelsensor 16 ist Bestandteil von Mitteln zur Steuerung der Verstellung des Zusatzauslegers 7, wie sie nachfolgend beschrieben wird. Anstelle der beschriebenen Winkelsensoren können selbstverständlich auch andere geeignete Sensoren verwendet werden, beispielsweise Wegsensoren, die vorzugsweise am Auslegerarm 3 oder an dem ersten Hubzylinder 5 angeordnet sind.On the boom pivot axis 4 and on the bucket linkage axis 10, an angle sensor 16 or 17 is arranged in each case. The angle sensors 16, 17 serve to determine the relative angle between boom 3 and vehicle body 2 or the position of the loading shovel 13 to the additional boom 7. Using those determined by means of the angle sensors 16, 17 An angle or position value is carried out electronically Control of the hydraulic cylinders 14, 15. The angle sensor 16 is part of means for controlling the Adjustment of the additional boom 7, as described below becomes. Instead of the angle sensors described can of course also use other suitable sensors are used, for example displacement sensors, which are preferred arranged on the cantilever arm 3 or on the first lifting cylinder 5 are.

Im Betrieb des erfindungsgemäßen Schaufelladers 1 erfolgt nach Füllen und Einkippen der Ladeschaufel 13 ein Anheben der Ladeschaufel 13 durch Verschwenken des Auslegerarms 3 um die Auslegerschwenkachse 4 mittels des ersten Hubzylinders 5. Bei dieser Aufwärtsschwenkbewegung beschreibt die Drehachse 6 (Schaufeldrehpunkt des Seriengeräts) eine Kreisbahn K1 (bis zur höchsten Lage A) und die Schaufelanlenkachse 10 beschreibt eine Kreisbahn K2, die durch eine Horizontallage D führt. In der Lage D liegt die Schaufelanlenkachse 10 auf gleicher Höhe mit der Auslegerschwenkachse 4 und die maximale Ausladung entsprechend der minimalen Kipplast ist erreicht.In the operation of the shovel loader 1 according to the invention after filling and tipping the loading shovel 13 a lifting the loading shovel 13 by pivoting the extension arm 3 about the boom pivot axis 4 by means of the first lifting cylinder 5. In this upward swivel movement describes the Rotation axis 6 (bucket pivot point of the standard device) one Circular path K1 (up to the highest position A) and the blade pivot axis 10 describes a circular path K2 through a Horizontal position D leads. The blade pivot axis lies in position D. 10 at the same height as the boom pivot axis 4 and the maximum throat corresponding to the minimum Tipping load has been reached.

Während der Aufwärtsschwenkbewegung des Auslegerarms 3 bleibt der Zusatzausleger 7 zunächst unbetätigt in seiner eingeklappten Position an dem Auslegerarm 3, während mittels des Kippzylinders 14 bereits eine durch den Winkelsensor 17 und damit verbundenen Steuermitteln, die nicht näher dargestellt sind, gesteuerte Betätigung der Ladeschaufel 13 derart erfolgt, daß die Ladeschaufel 13 mit ihrer Öffnung stets nach oben weist (Parallelhaltefunktion - vgl. Figur 2, in der der Gesamtausleger in der in Figur 3 mit D bezeichneten Lage dargestellt ist).During the upward pivoting movement of the extension arm 3 the additional boom 7 initially remains unactuated in its folded position on the cantilever arm 3 while using of the tilt cylinder 14 already by the angle sensor 17 and related tax revenue not specified Controlled actuation of the loading shovel 13 are shown takes place such that the loading shovel 13 with its opening always points upwards (parallel holding function - see figure 2, in which the overall boom is designated D in FIG Location is shown).

Nach dem Durchtritt durch die Lage D, d.h. nach dem Erreichen der maximalen Ausladung, beginnt ab einer vorbestimmten Winkellage des Auslegerarms 3 eine Verstellung des Zusatzauslegers 7 mittels des zweiten Hubzylinders 15, der über mit dem Winkelsensor 16 verbundene elektronische Steuermittel angesteuert wird. In dem in der Figur dargestellten Ausführungsbeispiel erfolgt die Verstellung des Zusatzauslegers 7 ab einer Lage B1 der Drehachse 6 des Auslegerarms 3, die zirka 10° oberhalb der Horizontalen liegt. Natürlich kann eine Verstellung des Zusatzauslegers 7 auch in anderen Lagen beginnen, die vorzugsweise jedoch alle oberhalb der maximalen Ausladung liegen, um auch bei Ladearbeiten auf leicht abfallendem Gelände ein Überschreiten der maximalen Ausladung zu vermeiden bzw. die Kippsicherheit zu gewährleisten.After passing through location D, i.e. after reaching the maximum radius, starts from a predetermined Angular position of the boom 3 an adjustment of the additional boom 7 by means of the second lifting cylinder 15, the via electronic control means connected to the angle sensor 16 is controlled. In the shown in the figure Exemplary embodiment is the adjustment of the additional boom 7 from a position B1 of the axis of rotation 6 of the cantilever arm 3, which is about 10 ° above the horizontal. Of course, an adjustment of the additional boom 7 can also start in other locations, but preferably all lie above the maximum radius in order to also be used for loading work exceeding on slightly sloping terrain to avoid the maximum outreach or the safety against tipping over to ensure.

Der Lage B1 der Drehachse 6 entspricht eine Lage B2 der Schaufelanlenkachse 10, die den Endpunkt der bisherigen Kreisbahn K2 der Schaufelanlenkachse 10 darstellt, da nun durch eine Betätigung und das damit verbundene Ausklappen des Zusatzauslegers 7 die Schaufelanlenkachse 10 am Ende des Zusatzauslegers 7 stärker aufwärts bewegt wird als auf der Kreisbahn K2. Der Parallelhaltefunktion durch hydraulisch elektronische Abgleichung der Winkelstellung zwischen Ladeschaufel und Zusatzausleger 7 ist somit eine Ausklappbewegung des Zusatzauslegers 7 überlagert, so daß nach Erreichen der Lage A durch die Drehachse 6 des Auslegerarms 3 die Schaufelanlenkachse 10 des Zusatzauslegers 7 die Höchstlage C erreicht hat.The position B1 of the axis of rotation 6 corresponds to a position B2 Blade articulation axis 10, which is the end point of the previous Circular path K2 of the blade articulation axis 10, since now by actuation and the associated unfolding of the additional boom 7, the blade articulation axis 10 at the end of the additional boom 7 is moved upward more than up the circular path K2. The parallel hold function through hydraulic electronic adjustment of the angular position between Loading shovel and additional boom 7 is thus a folding out movement of the additional boom 7 superimposed so that after reaching position A through the axis of rotation 6 of the cantilever arm 3 the blade articulation axis 10 of the additional boom 7 Has reached the highest position C.

Wie bereits vorstehend erwähnt, erfolgt umgekehrt bei der Abwärtsbewegung des Auslegers 3 eine Steuerung des Einklappvorgangs des Zusatzauslegers 7 derart, daß spätestens mit Erreichen der Lage B1 der Zusatzausleger 7 wieder vollständig eingeklappt ist. Durch diese erfindungsgemäße Maßnahme ist sichergestellt, daß die in der Lage D erreichte maximale Ausladung nie überschritten wird.As already mentioned above, the reverse takes place at Downward movement of the boom 3 controls the folding process of the additional boom 7 such that at the latest when the position B1 of the additional boom 7 is reached again completely is folded. By this measure according to the invention it is ensured that the position D reached maximum outreach is never exceeded.

Die horizontale Verstellung der Ladeschaufel unterhalb der Horizontallage des Auslegerarms 3 ist in den Figuren 4a bis 4c veranschaulicht. Figur 4a zeigt den erfindungsgemäßen Schaufellader der Figur 1 in Grundstellung mit abgesenktem Ausleger und ausgekippter Ladeschaufel 13. Zur Aufnahme von Ladegut L in die Ladeschaufel 13 wird üblicherweise der Schaufellader in die Richtung des Ladeguts L verfahren, bis sich eine ausreichende Menge von Ladegut in der Ladeschaufel 13 befindet. Sollte dies beispielsweise aufgrund ungeeigneter Beschaffenheit des Untergrundes nicht möglich sein, so kann nun erfindungsgemäß der Ausleger durch Betätigen des Zusatzauslegers 7 nach vorn verfahren werden, wie dies in den Figuren 4b und 4c dargestellt ist. Dazu wird der zweite Hubzylinder 15 betätigt und die Lenker 8, 9 verstellt. Gleichzeitig wird der Auslegerarm 3 auf eine sogenannte Schwimmstellung geschaltet, in der er mittels des ersten Hubzylinders 5 derart betätigt wird, daß ein Ausgleich der durch die Verstellung des Zusatzauslegers 7 verursachten Kreisbahn der Ladeschaufel 13 stattfindet, so daß sich die Ladeschaufel 13 entlang einer im wesentlichen horizontalen Ebene, vorgegeben durch den Boden, bewegt.The horizontal adjustment of the loading shovel below the The horizontal position of the cantilever arm 3 is in Figures 4a to 4c illustrates. Figure 4a shows the invention Shovel loader of Figure 1 in the basic position with lowered Boom and dump bucket 13. To accommodate Load L in the loading shovel 13 is usually the Move the shovel loader in the direction of the load L until there is a sufficient amount of cargo in the loading shovel 13 is located. For example, should this be due to unsuitable Condition of the surface not possible the boom can now be operated according to the invention of the additional boom 7 are moved forward, as this is shown in Figures 4b and 4c. This will the second lifting cylinder 15 is actuated and the links 8, 9 are adjusted. At the same time, the cantilever arm 3 is on a so-called Floating position switched, in which he by means of first lifting cylinder 5 is operated such that a compensation caused by the adjustment of the additional boom 7 Circular path of the loading shovel 13 takes place, so that the loading shovel 13 along a substantially horizontal Level, determined by the floor, moves.

Ist die Ladeschaufel 13 derart weit nach vorn bewegt, daß sie ausreichend mit Ladegut L befüllt ist (Figur 4c), wird die gefüllte Ladeschaufel eingekippt. Bevor der Auslegerarm 3 durch Betätigen des ersten Hubzylinders 5 angehoben werden kann, muß der Zusatzausleger 7 wieder vollständig eingefahren sein. Diese Stellung entspricht der in Figur 4a dargestellten Stellung, mit dem Unterschied, daß die Ladeschaufel 13 nach oben eingekippt ist. Erst dann kann mit der Anhebung des Auslegerarms 3, wie vorstehend in Zusammenhang mit den Figuren 1 bis 3 erläutert, fortgefahren werden. Vorzugsweise ist an dem Lenker 9 oder an dem zweiten Hubzylinder 15 ein elektrischer Winkel- oder Weggeber vorgesehen, der die Stellung des Zusatzauslegers 7 registriert und erst bei vollständig eingefahrenem Zusatzausleger 7 die Hubbewegung für den Auslegerarm 3 freigibt. Dadurch ist eine ausreichende Kippsicherheit gewährleistet.Is the loading shovel 13 moved so far forward that it is sufficiently filled with cargo L (FIG. 4c) the filled bucket tipped in. Before the boom arm 3 can be raised by actuating the first lifting cylinder 5 can, the additional boom 7 must be completely retracted his. This position corresponds to that in Figure 4a position shown, with the difference that the loading shovel 13 is tipped up. Only then can the raising of the cantilever arm 3, as related above explained with Figures 1 to 3, continued become. Preferably on the handlebar 9 or on the second Lift cylinder 15 is an electrical angle or displacement sensor provided that registers the position of the additional boom 7 and only when the additional boom is fully retracted 7 releases the lifting movement for the cantilever arm 3. Thereby sufficient tipping safety is guaranteed.

In Figur 5 ist eine entsprechende Anwendung der horizontalen Verstellung entlang einer beabstandet zum Boden befindlichen horizontalen Ebene am Beispiel eines Staplereinsatzes veranschaulicht. Hierzu ist bei dem erfindungsgemäßen Schaufellader der Figuren 1 bis 4 die Ladeschaufel 13 durch eine Stapelgabel 13' als Arbeitswerkzeug ersetzt. Auch in dieser angehobenen Stellung kann die vorstehend unter Bezugnahme auf die Figuren 4a bis 4c erläuterte Horizontalbewegung des erfindungsgemäßen Zusatzauslegers 7 ausgenutzt werden, wie durch die strichpunktierte Darstellung veranschaulicht, ohne daß der Schaufellader vorwärts oder rückwärts verfahren werden muß.In Figure 5 is a corresponding application of the horizontal Adjustment along a distance from the floor horizontal level using the example of a forklift truck illustrated. This is the case with the invention Shovel loader of Figures 1 to 4 through the loading shovel 13 a stacking fork 13 'replaced as a working tool. Also in this raised position may refer to the above horizontal movement explained in FIGS. 4a to 4c exploited the additional boom 7 according to the invention as illustrated by the dash-dotted line, without the shovel loader moving forward or backward must be followed.

Der besondere Vorteil der Erfindung liegt darin begründet, daß der erfindungsgemäße Schaufellader mit relativ einfachen Mitteln durch Tausch des Auslegerarmes aus einem Serienschaufellader erhalten werden kann, ohne daß die Standsicherheit durch einen überlangen Auslegerarm wesentlich verändert wird und wobei sämtliche Arbeitswerkzeuge des Seriengerätes weiter verwendet werden können. Somit kann erfindungsgemäß ein kleiner Serienschaufellader für die Hochladearbeit verwendet werden, wobei das Mehrgewicht des Zusatzauslegers durch ein zusätzliches Gegengewicht (Bezugszeichen 20 in Figur 1) ausgeglichen wird.The particular advantage of the invention lies in the fact that that the shovel loader according to the invention with relatively simple Averaging by exchanging the cantilever arm from a series shovel loader can be obtained without the stability significantly changed by an overlong boom is and with all the working tools of the series device can continue to be used. Thus, according to the invention a small serial shovel loader for upload work be used, the additional weight of the additional boom with an additional counterweight (reference number 20 in Figure 1) is compensated.

Die Kreisbahnen K1 und K2 können im günstigten Fall zusammenfallen. Wenn sie jedoch wie im dargestellten Ausführungsbeispiel voneinander beabstandet verlaufen, so muß auch diese Schwerpunktverlagerung durch das Zusastzgegengewicht 20 ausgeglichen werden. The circular paths K1 and K2 can coincide in the most favorable case. If, however, as in the illustrated embodiment run apart from each other, so must this shift in focus due to the additional counterweight 20 be balanced.

Selbstverständlich ist die Erfindung nicht auf das in den Figuren dargestellte Ausführungsbeispiel beschränkt, sondern umfaßt auch noch weitere bauliche Abwandlungen. Insbesondere müssen die Lenkerpaare 8 und 9 nicht, wie in der dargestellten Ausführungsform, im wesentlichen gleich lang sein, sondern können auch unterschiedlich lang ausgeführt sein. Außerdem können auch die Anzahl der Lenker und deren Anlenkpunkte frei gewählt werden, ohne daß der Rahmen der Erfindung verlassen wird. Des weiteren können der Auslegerarm 3 und/oder der Zusatzrahmen 7 beliebig ausgestattet sein, beispielsweise als sogenannter Mono-Boom-Ausleger, als Hohlkörper-Kastenkonstruktion oder als - wie beispielhaft gezeigt - aus zwei Seitenteilen gebildeter Rahmen.Of course, the invention is not limited to that in the Figures illustrated embodiment limited, but also includes other structural modifications. In particular do not have the handlebar pairs 8 and 9, as in the illustrated embodiment, substantially the same length but can also be of different lengths his. In addition, the number of handlebars and their Articulation points can be chosen freely, without the frame of the Invention is left. Furthermore, the boom arm 3 and / or the additional frame 7 equipped as desired be, for example as a so-called mono boom boom, as a hollow box construction or as - as an example shown - frame formed from two side parts.

Claims (18)

  1. Wheeled shovel loader with a boom (3) pivotable around a boom swivel pin (4) and a loading shovel (13) operable by means of a tipping structure (11, 12), characterized by at least one additional arm (7), connecting the boom (3) and the loading shovel (13), which is hinged on the boom (3) so that it can be displaced in the manner of a parallel linkage or a parallelogram under the action of at least one first connecting rod (8) and one second connecting rod (9), with means provided for control of the displacement of the additional arm (7) depending on the angular position of the boom (3) relative to the boom swivel pin (4) and for maintaining the loading shovel (13) in a parallel position.
  2. Shovel loader according to claim 1, characterized in that displacement of the additional arm (7) from its position retracted onto the boom (3) occurs only after the boom (3) has passed through its horizontals position as it pivots upward.
  3. Shovel loader according to claim 1 or 2, characterized in that the means for control of the displacement of the additional arm includes at least one angle sensor (16).
  4. Shovel loader according to claim 1 or 2, characterized in that the means for control of the displacement of the additional arm includes at least one position sensor.
  5. Shovel loader according to one of the claims 1 to 3, characterized in that the additional arm (7) can, even below the horizontal position of the boom (3), be displaced in a substantially horizontal direction to extend the loading shovel (13), the boom (3) being able to be shifted into a so-called floating position for compensation of the circular path of the loading shovel (13) caused by the displacement of the additional arm (7).
  6. Shovel loader according to claim 5, characterized in that an electric angle or position detector is provided for release of the lifting movement by the boom (3).
  7. Shovel loader according to one of the claims 1 to 6, characterized in that the lengths of the at least one first connecting rod (8) and the at least one second connecting rod (9) are substantially equal.
  8. Shovel loader according to one of the claims 1 to 6, characterized in that the length of the at least one first connecting rod (8) is shorter or longer than the length of the at least one second connecting rod (9).
  9. Shovel loader according to one of the claims 1 to 8, characterized in that the boom (3) and/or the additional arm (7) are implemented as hollow boxes or as lifting frames with two side parts and transverse connections.
  10. Shovel loader according to one of the claims 1 to 9, characterized in that a first hydraulic cylinder (5), which engages on a vehicle superstructure (2) of the shovel loader (1) on one end and on the boom (3) on the other end, is provided for pivoting of the boom (3).
  11. Shovel loader according to one of the claims 1 to 10, characterized in that a second hydraulic cylinder (15), which engages on the boom (3) on one end and on one of the connecting rods (8, 9) on the other end, is provided for displacement of the additional arm (7).
  12. Shovel loader according to claim 11, characterized in that the second hydraulic cylinder(15) engages on one end on the boom swivel pin (4).
  13. Method for displacing a loading shovel (13) of a wheeled shovel loader comprising a boom (3) pivotable around a boom swivel pin (4), the loading shovel (13) being operable by means of a tipping structure (11, 12) and being connected with the boom (3) via an additional arm (7) which is hinged on the boom (3) so that it can be displaced in the manner of a parallel linkage or a parallelogram under the action of at least one first' connecting rod (8) and one second connecting rod (9), wherein a displacement of the additional arm (7) is controlled depending on the angular position of the boom (3) relative to the boom swivel pin (4) and an operation of the loading shovel (13) is controlled in such a manner that the loading shovel is maintained in a parallel position.
  14. Method according to claim 13, characterized in that the additional arm (7) is displaced from its position retracted onto the boom (3) only after the boom (3) has passed through its horizontal position as it pivots upward.
  15. Method according to claim 13 or 14, characterized in that control of the displacement of the additional arm occurs on the basis of an angular measurement.
  16. Method according to claim 13 or 14 characterized in that control of the displacement of the additional arm occurs on the basis of a position measurement.
  17. Method according to one of the claims 13 to 15, characterized in that the additional arm (7) is, even below the horizontal position of the boom (3), displaced in a substantially horizontal direction when extending the loading shovel (13), the boom (3) being shifted into a so-called floating position for compensation of the circular path of the loading shovel (13) caused by the displacement of the additional arm (7).
  18. Method according to claim 17, characterized in that the lifting movement by the boom (3) is released on the basis of an electrical signal which is generated by an electric angle or position detector.
EP99950603A 1998-11-20 1999-10-02 Wheeled shovel loader Expired - Lifetime EP1131499B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19853523A DE19853523C1 (en) 1998-11-20 1998-11-20 Shovel loader vehicle e.g. for loading high-sided truck, has intermediate arm between load shovel and pivoted arm adjusted in dependence on position of latter for holding load shovel in parallel position
DE19853523 1998-11-20
PCT/EP1999/007319 WO2000031351A1 (en) 1998-11-20 1999-10-02 Wheeled shovel loader

Publications (2)

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EP1131499A1 EP1131499A1 (en) 2001-09-12
EP1131499B1 true EP1131499B1 (en) 2003-05-07

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EP99950603A Expired - Lifetime EP1131499B1 (en) 1998-11-20 1999-10-02 Wheeled shovel loader

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US (1) US6755604B1 (en)
EP (1) EP1131499B1 (en)
DE (2) DE19853523C1 (en)
WO (1) WO2000031351A1 (en)

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USD832551S1 (en) 2017-10-12 2018-10-30 Clark Equipment Company Loader
USD832552S1 (en) 2017-10-12 2018-10-30 Clark Equipment Company Lift arm for loader
US10626576B2 (en) 2016-12-16 2020-04-21 Clark Equipment Company Loader with telescopic lift arm

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* Cited by examiner, † Cited by third party
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WO2000031351A1 (en) 2000-06-02
DE19853523C1 (en) 2000-03-09
EP1131499A1 (en) 2001-09-12
US6755604B1 (en) 2004-06-29
DE59905503D1 (en) 2003-06-12

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