EP0569026A1 - Quick coupling device - Google Patents

Quick coupling device Download PDF

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Publication number
EP0569026A1
EP0569026A1 EP93107458A EP93107458A EP0569026A1 EP 0569026 A1 EP0569026 A1 EP 0569026A1 EP 93107458 A EP93107458 A EP 93107458A EP 93107458 A EP93107458 A EP 93107458A EP 0569026 A1 EP0569026 A1 EP 0569026A1
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EP
European Patent Office
Prior art keywords
coupling
coupling members
locking
adapter
quick
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Granted
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EP93107458A
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German (de)
French (fr)
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EP0569026B1 (en
Inventor
Karl-Heinz Walter
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Lehnhoff Hartstahl GmbH and Co
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Lehnhoff Hartstahl GmbH and Co
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Classifications

    • 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
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3613—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with means for absorbing any play therebetween
    • 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
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
    • 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
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch
    • Y10T403/602—Biased catch or latch by separate spring

Definitions

  • the invention relates to a quick-change device for earthmoving vehicles for replacing work tools, which are releasably connected to the boom of the earthmoving machine about a horizontal axis with this adapter, which is designed as fixed claws and is mounted as a displaceable locking bolt, with coupling elements that correspond to them on Appliances are assigned, of which the one coupling member has an opening for the entry of the sliding coupling members locking plate and the other coupling member forms a coupling axis at least partially encompassed by the claws, the bracing between the adapter and the implement taking place via the abutment surfaces of the coupling members.
  • EP-A 0 273 828 shows such a fixed and displaceable coupling member quick change device. Since space is required for pivoting and pivoting the adapter into the implement relative to the locking plate, this is correspondingly far away from the coupling axis to be gripped by the claws, so that when coupling only the claws with the coupling axis and the bolts with the openings in the locking plate are clamped. Due to this design of the coupling members, only a uniaxial bracing between the implement and the adapter on the boom takes place via the abutment surfaces of the coupling members. However, such a connection is not sufficiently rigid for heavy earthmoving operations.
  • the coupling members fixed to the housing have a coupling axis on the implement and these partially comprehensive receiving claws on the boom
  • the displaceably mounted coupling element being a spring-loaded wedge which interacts with the fixed coupling element arranged on the implement in the form of a hook
  • the wedge can be locked outside the active position by a locking device which is triggered during the coupling process between the boom and the implement, so that for the purpose of locking the wedge slides under the hook under the action of the spring; see AT-B 389 906.
  • displaceable coupling members as locking bolts which can be inserted into associated bores in a support plate of the implement via a lever mechanism; see DE-B 1 784 323.
  • these quick-change devices also have in common the complex training and the susceptibility to faults, taking into account the rough use in earthmoving work. Also, with these quick-change devices, the goal of carrying out a change of work equipment by the driver of the earth-moving machine without additional help personnel alone cannot be achieved.
  • the object of the invention is to further develop it in such a way that using fewer and also taking into account the unavoidable wear over long operating times, reliable components reliably lock the implement and boom of an earth moving machine alone from the driver.
  • the one abutment surface of the coupling members of the adapter is designed as a cylindrical jacket-shaped abutment surface delimited on both sides by the claws for the purpose of support on the lateral surface of the coupling axis of the implement, while the other abutment surface is flat and forms an imaginary plane connecting the two abutment surfaces is arranged at an incline that the locking plate has an abutment surface facing the adapter and corresponds to the abutment surface and corresponds to the full surface in the locked state, and that the abutment surfaces with the surfaces of the displaceable coupling elements and the openings in the locking plate corresponding to them slide and tighten form mutually facing abutment surfaces of the adapter and the implement force wedge gear.
  • the coupling surfaces of the displaceably mounted coupling members of the adapter and the coupling members of the implement are designed and assigned to one another in such a way that they form a wedge gear that clamps the adapter housing and the adapter plate together.
  • the coupling surfaces of the displaceable coupling members and the coupling surfaces of the associated coupling members of the locking plate are designed as conical lateral surfaces which correspond to one another over a circumferential angle of approximately 180 °, the circumferential partial surfaces of the coupling elements assigned to the locking plate being complementary to 360 ° and having the associated Include a predetermined bearing clearance circumferential surface areas of the sliding coupling members.
  • the inventive design of the locking components of the quick-change device has the advantage that during the locking process, the locking bolts essentially have a supporting function in the upper lateral surface half of the truncated cone-shaped area and the oblique clamping surface of the adapter housing slides over the entire surface onto the oblique clamping surface of the locking plate, so that with a multiaxial bracing of adapter and implement takes place simultaneously with the initiation of the control process.
  • the adapter housing is pressed forward against the coupling axis, and the preferably elliptical space between the locking bolts and openings in the locking plate ensures that the locking bolts continuously adjust, that is to say can move into the locking position.
  • the locking bolts which are under spring tension, thus assume a low-tension function, whereby the contact claws on the coupling axis create a surface pressure between the above-mentioned inclined surfaces.
  • centering elements By means of the centering elements, a pre-centering is achieved when lowering the adapter housing onto the adapter plate assigned to the implement, which not only facilitates the locking process and significantly reduces wear due to canting between the adapter housing and implement, but also makes it possible to change implements without instructions.
  • the switching shaft of the locking device can be driven both mechanically and hydraulically, in the mechanical embodiment, an articulated lever mechanism with locking via dead center, and in the hydraulic embodiment, the locking bolts are articulated via an oscillating pressure compensation bridge and a hydraulic cylinder.
  • a quick-change device designated as a whole in FIG. 1 with the reference number 10 comprises an adapter, consisting of adapter housing 30 and adapter plate 12, of which the housing 30 is associated with an extension arm, not shown here, of an earthmoving machine, also not shown, and the adapter plate 12 is associated with the implement, also not shown so they are firmly connected.
  • the adapter plate 12 comprises a base plate 14 on which a locking plate 16 is welded at one end and a coupling axis 19 is welded at the opposite end by means of fastening tabs 17.
  • the locking plate 16 has on the side facing the coupling axis a clamping surface 20 which is inclined to the vertical surface 20 'by 3 ° to 35 °, preferably by 5 ° to 15 °.
  • the locking plate 16 is furthermore, as can be seen in particular from FIG. 3, provided with two openings 21 and 22 which are arranged at a distance a from one another and have a conical cross section.
  • the cone angle of the openings delimited by conical surface areas is dimensioned accordingly and is 5 ° to 15 ° in the exemplary embodiment shown.
  • the approximately cuboidal adapter housing 30 has a receiving claw 31 on its side faces, which in the retracted state - see FIG. 2 - encompass the coupling axis 19.
  • the end face of the housing 30 located between the receiving claws 31 merges into an abutment surface 32 in the form of a cylindrical jacket, which — as also shown in FIG. 2 — is supported on the cylindrical jacket surface of the coupling axis 19 in the retracted state.
  • the opposite end face 34 is inclined by 3 ° to 35 °, preferably by 5 ° to 15 °, with respect to the vertical - corresponding to the clamping surface 20 of the locking plate 16 - and also has two openings 35 through which one in the housing 30 is mounted so as to be longitudinally displaceable Latch bolt 36 can pass through.
  • Each locking bolt 36 has a spring 38 which is arranged in a blind bore 37 and which is supported with its free end on a spring plate 39 to which the end face of an angle lever 41 is assigned.
  • the angle lever 41 is articulated by means of a connecting bolt 42 on a switching cam 43 which is fixedly connected to a switching shaft 44.
  • the facing arm of the angle lever 41 is connected in an articulated manner to the locking bolt 36 by means of a connecting bolt 45 which extends through an elongated hole 46 at the facing end of the locking bolt 36.
  • the parts described above form a known toggle lever mechanism, which is driven via the selector shaft 44 and moves beyond the dead center position - imaginary connecting line of the center points of the selector shaft 44 and connecting bolt 45 - when moving from the rest position shown in FIG. 1 into the working position shown in FIG and locked with it. In this way, automatic release of the extended locking bolts 36 from the locking position shown in FIG. 2 is prevented.
  • the opposite ends 50 of the locking bolts 36 are frustoconical in shape with a cone angle of 5 ° to 15 ° and correspond to the openings 21, 22 in the locking plate 16, as can also be clearly seen from FIG. 2.
  • centering members are provided, of which the centering members assigned to the adapter housing 30 are designed as cylindrical pins 52 (FIG. 1) which lie in the flat end face 34 on both sides of the displaceable locking bolts 36.
  • the centering members assigned to the locking plate 16 are inclined surfaces 51 (FIG. 3) lying in the lowering path of the adapter housing 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Forging (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Earth Drilling (AREA)
  • Agricultural Machines (AREA)
  • Jib Cranes (AREA)

Abstract

Quick-coupling device for earthmoving vehicles for exchanging implements which are detachably connected to an adaptor pivotable on the boom of the earthmoving machine about a horizontal axis, the adaptor having fixed and displaceably mounted coupling members (36) to which fixed coupling members (16) on the implement are allocated, and the displaceably mounted coupling members (36) of the adaptor being locking bolts having coupling surfaces with tapered circumferences, to which coupling members having tapered circumferences on the implement are allocated, which are designed so as to be load-bearing merely over an area of 180 DEG with the corresponding tapered circumferences of the allocated fixed coupling members (16) of the implement. <IMAGE>

Description

Die Erfindung betrifft eine Schnellwechselvorrichtung für Erdbewegungsfahrzeuge zum Auswechseln von Arbeitsgeräten, die über einen an einem Ausleger der Erdbewegungsmaschine um eine horizontale Achse schwenkbaren Adapter mit diesem lösbar verbunden sind, der als feste Klauen ausgebildete und als verschiebbare Verriegelungsbolzen gelagerte Kupplungsglieder aufweist, denen damit korrespondierende Kupplungsglieder am Arbeitsgerät zugeordnet sind, von denen das eine Kupplungsglied eine Öffnungen für den Eintritt der verschiebbaren Kupplungsglieder aufweisende Riegelplatte ist und das andere Kupplungsglied eine von den Klauen zumindest teilweise umfaßte Kupplungsachse bildet, wobei über die Widerlagerflächen der Kupplungsglieder die Verspannung zwischen Adapter und Arbeitsgerät erfolgt.The invention relates to a quick-change device for earthmoving vehicles for replacing work tools, which are releasably connected to the boom of the earthmoving machine about a horizontal axis with this adapter, which is designed as fixed claws and is mounted as a displaceable locking bolt, with coupling elements that correspond to them on Appliances are assigned, of which the one coupling member has an opening for the entry of the sliding coupling members locking plate and the other coupling member forms a coupling axis at least partially encompassed by the claws, the bracing between the adapter and the implement taking place via the abutment surfaces of the coupling members.

Eine solche feste und verschiebbare Kupplungsglieder aufweisende Schnellwechselvorrichtung zeigt die EP-A 0 273 828. Da Raum für das Einschwenken und Ausschwenken des Adapters in das Arbeitsgerät gegenüber der Riegelplatte benötigt wird, ist diese entsprechend weit von der von den Klauen zu umgreifenden Kupplungsachse entfernt, so daß beim Kuppeln lediglich die Klauen mit der Kupplungsachse und die Bolzen mit den Öffnungen in der Riegelplatte verspannt werden. Durch diese Ausbildung der Kupplungsglieder bedingt erfolgt über die Widerlagerflächen der Kupplungsglieder lediglich ein einachsiges Verspannen zwischen dem Arbeitsgerät und dem Adapter am Ausleger. Eine solche Verbindung ist aber nicht ausreichend steif für den schweren Erdbewegungsbetrieb. Darüber hinaus treten infolge der im wesentlichen nur linienförmigen Berührung zwischen den Kupplungsflächen während des Einsatzes des Erdbewegungsfahrzeuges hohe relative Flächenbelastungen an den Kupplungsgliedern auf.
Beides führt aber zu einem unerwünschten schnellen Verschleiß der Kupplungsglieder. Schließlich ist für den Wechsel von Arbeitsgeräten eine einweisende Hilfe für den Fahrer des Erdbewegungsfahrzeuges notwendig.EP-A 0 273 828 shows such a fixed and displaceable coupling member quick change device. Since space is required for pivoting and pivoting the adapter into the implement relative to the locking plate, this is correspondingly far away from the coupling axis to be gripped by the claws, so that when coupling only the claws with the coupling axis and the bolts with the openings in the locking plate are clamped. Due to this design of the coupling members, only a uniaxial bracing between the implement and the adapter on the boom takes place via the abutment surfaces of the coupling members. However, such a connection is not sufficiently rigid for heavy earthmoving operations. In addition, due to the essentially linear contact between the coupling surfaces during the use of the earth moving vehicle, high relative surface loads occur on the coupling members.
However, both lead to undesirable rapid wear of the coupling members. Finally, instructing help for the driver of the earthmoving vehicle is necessary for changing tools.

Ferner sind Schnellwechselvorrichtungen bekannt, bei denen die gehäusefesten Kupplungsglieder eine Kupplungsachse am Arbeitsgerät und diese teilweise umfassende Aufnahmeklauen am Ausleger aufweisen, wobei das verschiebbar gelagerte Kupplungsglied ein federbelasteter Keil ist, der mit dem am Arbeitsgerät angeordneten festen Kupplungsglied in Form eines Hakens zusammenwirkt, wobei der Keil außerhalb der Wirkstellung durch eine Sperrvorrichtung arretierbar ist, die beim Kupplungsvorgang zwischen dem Ausleger und dem Arbeitsgerät ausgelöst wird, so daß sich zwecks Verriegelung der Keil unter der Wirkung der Feder unter den Haken schiebt; vergleiche AT-B 389 906.Furthermore, quick-change devices are known in which the coupling members fixed to the housing have a coupling axis on the implement and these partially comprehensive receiving claws on the boom, the displaceably mounted coupling element being a spring-loaded wedge which interacts with the fixed coupling element arranged on the implement in the form of a hook, the wedge can be locked outside the active position by a locking device which is triggered during the coupling process between the boom and the implement, so that for the purpose of locking the wedge slides under the hook under the action of the spring; see AT-B 389 906.

Es ist auch bekannt, die verschiebbaren Kupplungsglieder als Riegelbolzen auszubilden, die über ein Hebelgetriebe in zugeordnete Bohrungen einer Tragplatte des Arbeitsgerätes einfahrbar sind; vergleiche DE-B 1 784 323.It is also known to design the displaceable coupling members as locking bolts which can be inserted into associated bores in a support plate of the implement via a lever mechanism; see DE-B 1 784 323.

Schließlich sind Schnellwechselvorrichtungen bekannt, bei denen als bewegliche Kupplungsglieder federbelastete Klinken vorgesehen sind, die im Kupplungszustand ein Gegen-Riegelteil übergreifen und durch äußeren Kraftangriff entgegen der Federkraft entriegelbar sind; vergleiche DE-A 3 312 442.Finally, quick-change devices are known in which spring-loaded pawls are provided as movable coupling members, which overlap a counter-locking part in the coupling state and can be unlocked against the spring force by external force application; compare DE-A 3 312 442.

Über die Eigenschaften der eingangs erläuterten Schnellwechselvorrichtung hinaus ist diesen Schnellwechselvorrichtungen ferner gemeinsam die aufwendige Ausbildung und die Störanfälligkeit unter Berücksichtigung des rauhen Einsatzes bei Erdbewegungsarbeiten. Auch ist mit diesen Schnellwechselvorrichtungen das Ziel, ohne weiteres Hilfspersonal allein durch den Fahrer der Erdbewegungsmaschine einen Wechsel der Arbeitsgeräte durchzuführen, nicht erreichbar.In addition to the properties of the quick-change device explained at the outset, these quick-change devices also have in common the complex training and the susceptibility to faults, taking into account the rough use in earthmoving work. Also, with these quick-change devices, the goal of carrying out a change of work equipment by the driver of the earth-moving machine without additional help personnel alone cannot be achieved.

Andererseits besteht jedoch ein großer Bedarf an zuverlässig über lange Betriebszeiten arbeitenden und einfach zu bedienenden Schnellwechselvorrichtungen.On the other hand, there is a great need for quick-change devices that work reliably over long operating times and are easy to operate.

Ausgehend von der Schnellwechselvorrichtung nach der EP-A 0 273 828 liegt der Erfindung die Aufgabe zugrunde, diese derart weiterzubilden, daß unter Benutzung weniger und auch unter Berücksichtigung des unvermeidbaren Verschleißes über lange Betriebszeiten zuverlässig arbeitender Bauteile ein sicheres Verriegeln von Arbeitsgerät und Ausleger einer Erdbewegungsmaschine allein vom Fahrer aus möglich wird.On the basis of the quick-change device according to EP-A 0 273 828, the object of the invention is to further develop it in such a way that using fewer and also taking into account the unavoidable wear over long operating times, reliable components reliably lock the implement and boom of an earth moving machine alone from the driver.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß die eine Widerlagerfläche der Kupplungsglieder des Adapters als beidseitig von den Klauen begrenzte zylindermantelförmige Widerlagerfläche ausgebildet ist zwecks Abstützung an der Mantelfläche der Kupplungsachse des Arbeitsgerätes, während die andere Widerlagerfläche eben ausgebildet und zu einer gedachten, beide Widerlagerflächen verbindenden Ebene geneigt angeordnet ist, daß die Riegelplatte eine der Widerlagerfläche des Adapters zugewandte und mit dieser korrespondierende und im Verriegelungszustand vollflächig aufliegende Widerlagerfläche aufweist, und daß die Widerlagerflächen mit den Flächen der verschiebbaren Kupplungsglieder und den mit diesen korrespondierenden Öffnungen in der Riegelplatte ein ein Aufgleiten und Verspannen der einander zugewandten Widerlagerflächen von Adapter und Arbeitsgerät erzwingendes Keilgetriebe bilden.This object is achieved in that the one abutment surface of the coupling members of the adapter is designed as a cylindrical jacket-shaped abutment surface delimited on both sides by the claws for the purpose of support on the lateral surface of the coupling axis of the implement, while the other abutment surface is flat and forms an imaginary plane connecting the two abutment surfaces is arranged at an incline that the locking plate has an abutment surface facing the adapter and corresponds to the abutment surface and corresponds to the full surface in the locked state, and that the abutment surfaces with the surfaces of the displaceable coupling elements and the openings in the locking plate corresponding to them slide and tighten form mutually facing abutment surfaces of the adapter and the implement force wedge gear.

Nach einem weiteren Merkmal der Erfindung sind die Kupplungsflächen der verschiebbar gelagerten Kupplungsglieder des Adapters und der Kupplungsglieder des Arbeitsgerätes derart ausgebildet und einander zugeordnet, daß diese ein das Adaptergehäuse und die Adapterplatte miteinander verspannendes Keilgetriebe bilden.According to a further feature of the invention, the coupling surfaces of the displaceably mounted coupling members of the adapter and the coupling members of the implement are designed and assigned to one another in such a way that they form a wedge gear that clamps the adapter housing and the adapter plate together.

Nach einem weiteren Merkmal der Erfindung sind die Kupplungsflächen der verschiebbaren Kupplungsglieder und die Kupplungsflächen der zugeordneten Kupplungsglieder der Riegelplatte als über einen Umfangswinkel von etwa 180° miteinander korrespondierende Kegelmantelflächen ausgebildet, wobei die den Umfangswinkel auf 360° ergänzenden Umfangsteilflächen der der Riegelplatte zugeordneten Kupplungsglieder mit den zugeordneten Umfangsflächenbereichen der verschiebbaren Kupplungsglieder ein vorbestimmtes Lagerspiel einschließen.According to a further feature of the invention, the coupling surfaces of the displaceable coupling members and the coupling surfaces of the associated coupling members of the locking plate are designed as conical lateral surfaces which correspond to one another over a circumferential angle of approximately 180 °, the circumferential partial surfaces of the coupling elements assigned to the locking plate being complementary to 360 ° and having the associated Include a predetermined bearing clearance circumferential surface areas of the sliding coupling members.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention result from the subclaims.

Die erfindungsgemäße Ausbildung der dem Verriegeln dienenden Bauteile der Schnellwechselvorrichtung hat den Vorteil, daß beim Verriegelungsvorgang die Riegelbolzen im wesentlichen in der oberen Mantelflächenhälfte des kegelstumpfförmigen Bereiches eine tragende Funktion ausüben und die schräge Spannfläche des Adaptergehäuses vollflächig auf die schräge Spannfläche der Verriegelplatte aufgleitet, so daß mit dem Einleiten des Regelvorgangs gleichzeitig ein mehrachsiges Verspannen von Adapter und Arbeitsgerät erfolgt.The inventive design of the locking components of the quick-change device has the advantage that during the locking process, the locking bolts essentially have a supporting function in the upper lateral surface half of the truncated cone-shaped area and the oblique clamping surface of the adapter housing slides over the entire surface onto the oblique clamping surface of the locking plate, so that with a multiaxial bracing of adapter and implement takes place simultaneously with the initiation of the control process.

Während des Kupplungsvorgangs wird das Adaptergehäuse nach vorn gegen die Kupplungsachse gedrückt, und durch den vorzugsweise elliptisch ausgebildeten Freiraum zwischen Riegelbolzen und Durchbrüchen in der Riegelplatte ist gewährleistet, daß die Riegelbolzen ständig nachsetzen, sich also in die Verriegelungsposition bewegen können. Die unter Federspannung stehenden Riegelbolzen übernehmen somit eine Niederspannfunktion, wobei durch die Anlage der Aufnahmeklauen an der Kupplungsachse eine Flächenpressung zwischen den vorstehend erwähnten Schrägflächen entsteht.During the coupling process, the adapter housing is pressed forward against the coupling axis, and the preferably elliptical space between the locking bolts and openings in the locking plate ensures that the locking bolts continuously adjust, that is to say can move into the locking position. The locking bolts, which are under spring tension, thus assume a low-tension function, whereby the contact claws on the coupling axis create a surface pressure between the above-mentioned inclined surfaces.

Falls Toleranzen, verursacht durch Verschleiß, auftreten sollten, werden diese dadurch ausgeglichen, daß die federbeaufschlagten Riegelbolzen weiter in den Freiraum der Durchbrüche in der Riegelplatte vorgeschoben werden können.If tolerances caused by wear should occur, these are compensated for by the fact that the spring-loaded locking bolts can be pushed further into the free space of the openings in the locking plate.

Mittels der Zentrierorgane wird eine Vorzentrierung beim Absenken des Adaptergehäuses auf die dem Arbeitsgerät zugeordnete Adapterplatte erreicht, wodurch der Verriegelungsvorgang nicht nur erleichtert und ein Verschleiß infolge Verkantens zwischen Adaptergehäuse und Arbeitsgerät wesentlich verringert, sondern auch ein einweisungsfreies Wechseln von Arbeitsgeräten möglich wird.By means of the centering elements, a pre-centering is achieved when lowering the adapter housing onto the adapter plate assigned to the implement, which not only facilitates the locking process and significantly reduces wear due to canting between the adapter housing and implement, but also makes it possible to change implements without instructions.

Der Antrieb der Schaltwelle der Verriegelungsvorrichtung kann sowohl mechanisch als auch hydraulisch erfolgen, wobei in der mechanischen Ausführungsform ein Knickhebelmechanismus mit Verriegelung über den Totpunkt und bei der hydraulischen Ausführungsform die Anlenkung der Riegelbolzen über eine pendelnde Druckausgleichsbrücke und einen Hydraulikzylinder erfolgen.The switching shaft of the locking device can be driven both mechanically and hydraulically, in the mechanical embodiment, an articulated lever mechanism with locking via dead center, and in the hydraulic embodiment, the locking bolts are articulated via an oscillating pressure compensation bridge and a hydraulic cylinder.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben. In ihr zeigen:

Figur 1
einen Querschnitt der teilweise dem Ausleger einer Erdbewegungsmaschine und teilweise dem Arbeitsgerät zugeordneten Schnellwechselvorrichtung vor dem gegenseitigen Eingriff,
Figur 2
die Schnellwechselvorrichtung nach Figur 1 in Eingriff und
Figur 3
eine Ansicht auf eine Einzelheit der Schnellwechselvorrichtung in Richtung des Pfeiles 3 in Figur 1.
The invention is described below with reference to an embodiment shown in the drawing. Show in it:
Figure 1
2 shows a cross section of the quick-change device, which is partly assigned to the boom of an earthmoving machine and partly to the implement, before mutual engagement,
Figure 2
the quick-change device according to Figure 1 in engagement and
Figure 3
a view of a detail of the quick-change device in the direction of arrow 3 in Figure 1.

Eine in Figur 1 insgesamt mit der Bezugsziffer 10 bezeichnete Schnellwechselvorrichtung umfaßt einen Adapter, bestehend aus Adaptergehäuse 30 und Adapterplatte 12, von denen das Gehäuse 30 einem hier nicht dargestellten Auslegerarm einer ebenfalls nicht dargestellten Erdbewegungsmaschine und die Adapterplatte 12 dem ebenfalls nicht dargestellten Arbeitsgerät zugeordnet und mit diesen also fest verbunden sind.A quick-change device designated as a whole in FIG. 1 with the reference number 10 comprises an adapter, consisting of adapter housing 30 and adapter plate 12, of which the housing 30 is associated with an extension arm, not shown here, of an earthmoving machine, also not shown, and the adapter plate 12 is associated with the implement, also not shown so they are firmly connected.

Die Adapterplatte 12 umfaßt eine Grundplatte 14, auf der an dem einen Ende eine Riegelplatte 16 und an dem abgewandten Ende mittels Befestigungslaschen 17 eine Kupplungsachse 19 verschweißt sind. Die Riegelplatte 16 weist auf der der Kupplungsachse zugewandten Seite eine Spannfläche 20 auf, die zur senkrechten Fläche 20' um 3° bis 35°, vorzugsweise um 5° bis 15°, geneigt ist. Die Riegelplatte 16 ist ferner, wie insbesondere aus Figur 3 zu ersehen ist, mit zwei im Abstand a voneinander angeordneten und im Querschnitt konisch ausgebildeten Durchbrüchen 21 und 22 versehen. Der Konuswinkel der von Kegelmantelflächen begrenzten Durchbrüche ist entsprechend bemessen und beträgt im dargestellten Ausführungsbeispiel 5° bis 15°.The adapter plate 12 comprises a base plate 14 on which a locking plate 16 is welded at one end and a coupling axis 19 is welded at the opposite end by means of fastening tabs 17. The locking plate 16 has on the side facing the coupling axis a clamping surface 20 which is inclined to the vertical surface 20 'by 3 ° to 35 °, preferably by 5 ° to 15 °. The locking plate 16 is furthermore, as can be seen in particular from FIG. 3, provided with two openings 21 and 22 which are arranged at a distance a from one another and have a conical cross section. The cone angle of the openings delimited by conical surface areas is dimensioned accordingly and is 5 ° to 15 ° in the exemplary embodiment shown.

Diese 360° umfassenden Kegelmantelflächen der Durchbrüche 21 und 22 sind jeweils im gleichen Abstand zwei Zentren Z1 und Z2 zugeordnet, so daß jeweils zwei Kegelmantelteilflächen vorhanden sind, von denen die in bezug auf Figur 1 untere Kegelmantelteilfläche gegenüber der gedachten, die obere Kegelmantelteilfläche zu einem vollständigen Kegelstumpf ergänzende Kegelmantelteilfläche ein noch zu beschreibendes Lagerspiel S aufweist.These 360 ° conical surface areas of the openings 21 and 22 are each assigned two centers Z1 and Z2 at the same distance, so that there are two conical surface areas, of which the lower conical surface area in relation to FIG. 1 compared to the imaginary, the upper conical surface area to a complete one Truncated cone complementary conical surface has a bearing play S to be described.

Das etwa quaderförmige Adaptergehäuse 30 weist an seinen Seitenflächen je eine Aufnahmeklaue 31 auf, die im eingefahrenen Zustand - vergleiche Figur 2 - die Kupplungsachse 19 umgreifen. Die zwischen den Aufnahmeklauen 31 befindliche Stirnfläche des Gehäuses 30 geht in eine zylindermantelförmige Widerlagerfläche 32 über, die - wie ebenfalls Figur 2 zeigt - im eingefahrenen Zustand sich an der Zylindermantelfläche der Kupplungsachse 19 abstützt.The approximately cuboidal adapter housing 30 has a receiving claw 31 on its side faces, which in the retracted state - see FIG. 2 - encompass the coupling axis 19. The end face of the housing 30 located between the receiving claws 31 merges into an abutment surface 32 in the form of a cylindrical jacket, which — as also shown in FIG. 2 — is supported on the cylindrical jacket surface of the coupling axis 19 in the retracted state.

Die abgewandte Stirnseite 34 ist um 3° bis 35°, vorzugsweise um 5° bis 15°, gegenüber der Senkrechten - korrespondierend zur Spannfläche 20 der Riegelplatte 16 - geneigt und weist ebenfalls zwei Durchbrüche 35 auf, durch die je ein im Gehäuse 30 längsverschieblich gelagerter Riegelbolzen 36 hindurchtreten kann.The opposite end face 34 is inclined by 3 ° to 35 °, preferably by 5 ° to 15 °, with respect to the vertical - corresponding to the clamping surface 20 of the locking plate 16 - and also has two openings 35 through which one in the housing 30 is mounted so as to be longitudinally displaceable Latch bolt 36 can pass through.

Jeder Riegelbolzen 36 weist eine in einer Sackbohrung 37 angeordnete Feder 38 auf, die sich mit ihrem freien Ende auf einem Federteller 39 abstützt, dem die Stirnseite eines Winkelhebels 41 zugeordnet ist. Der Winkelhebel 41 ist mittels eines Verbindungsbolzens 42 an einem Schaltnocken 43 angelenkt, der mit einer Schaltwelle 44 fest verbunden ist. Über einen Verbindungsbolzen 45, der durch ein Langloch 46 am zugewandten Ende des Riegelbolzens 36 greift, ist der zugewandte Arm des Winkelhebels 41 mit dem Riegelbolzen 36 gelenkig verbunden.Each locking bolt 36 has a spring 38 which is arranged in a blind bore 37 and which is supported with its free end on a spring plate 39 to which the end face of an angle lever 41 is assigned. The angle lever 41 is articulated by means of a connecting bolt 42 on a switching cam 43 which is fixedly connected to a switching shaft 44. The facing arm of the angle lever 41 is connected in an articulated manner to the locking bolt 36 by means of a connecting bolt 45 which extends through an elongated hole 46 at the facing end of the locking bolt 36.

Die vorstehend beschriebenen Teile bilden ein an sich bekanntes Kniehebelgetriebe, das über die Schaltwelle 44 angetrieben beim Bewegen von der in Figur 1 gezeigten Ruhelage in die in Figur 2 gezeigte Arbeitslage über die Totpunktlage hinaus - gedachte Verbindungslinie der Mittelpunkte von Schaltwelle 44 und Verbindungsbolzen 45 - bewegt und damit verriegelt ist. Auf diese Weise wird ein selbsttätiges Lösen der ausgefahrenen Riegelbolzen 36 aus der in Figur 2 dargestellten Riegellage verhindert.The parts described above form a known toggle lever mechanism, which is driven via the selector shaft 44 and moves beyond the dead center position - imaginary connecting line of the center points of the selector shaft 44 and connecting bolt 45 - when moving from the rest position shown in FIG. 1 into the working position shown in FIG and locked with it. In this way, automatic release of the extended locking bolts 36 from the locking position shown in FIG. 2 is prevented.

Die abgewandten Enden 50 der Riegelbolzen 36 sind kegelstumpfförmig mit einem Kegelwinkel von 5° bis 15° ausgebildet und korrespondieren mit den Durchbrüchen 21, 22 in der Riegelplatte 16, wie dies ebenfalls aus Figur 2 deutlich erkennbar ist.The opposite ends 50 of the locking bolts 36 are frustoconical in shape with a cone angle of 5 ° to 15 ° and correspond to the openings 21, 22 in the locking plate 16, as can also be clearly seen from FIG. 2.

Zwecks Vorzentrierung beim Absenken des Adaptergehäuses 30 auf die Adapterplatte 12 des Arbeitsgerätes sind Zentrierorgane vorgesehen, von denen die dem Adaptergehäuse 30 zugeordneten Zentrierorgane als Zylinderstifte 52 (Figur 1) ausgebildet sind, die in die ebene Stirnfläche 34 beidseitig der verschiebbaren Riegelbolzen 36 liegen. Die der Riegelplatte 16 zugeordneten Zentrierorgane sind im Absenkweg des Adaptergehäuses 30 liegende Schrägflächen 51 (Figur 3). Beim Absenken des Adaptergehäuses 30 auf die Adpaterplatte 12 - siehe Figur 1 - werden infolge der Schrägflächen 51 das Adaptergehäuse und damit die verschiebbaren Riegelbolzen 36 in bezug auf die Durchbrüche 21, 22 ausgerichtet und damit zentriert, so daß der Kupplungsvorgang zwischen Riegelbolzen 36 und Durchbrüchen 21, 22 störungsfrei erfolgt.For the purpose of pre-centering when lowering the adapter housing 30 onto the adapter plate 12 of the implement, centering members are provided, of which the centering members assigned to the adapter housing 30 are designed as cylindrical pins 52 (FIG. 1) which lie in the flat end face 34 on both sides of the displaceable locking bolts 36. The centering members assigned to the locking plate 16 are inclined surfaces 51 (FIG. 3) lying in the lowering path of the adapter housing 30. When the adapter housing 30 is lowered onto the adapter plate 12 - see FIG. 1 - as a result of the inclined surfaces 51, the adapter housing and thus the displaceable locking bolts 36 are aligned and thus centered with respect to the openings 21, 22, so that the coupling process between locking bolts 36 and openings 21 , 22 is carried out without interference.

Infolge der Exzentrizität - Lagerspiel S - der in bezug auf die Figuren 1 bis 3 unteren Kegelmantelteilflächen der Durchbrüche 21, 22 der Riegelplatte 16 liegen in der Eingriffsstellung gemäß Figur 2 die kegelstumpfförmigen Endbereiche 50 der Riegelbolzen 36 lediglich an den oberen Kegelmantelteilflächen der Durchbrüche 21, 22, also über etwa 180° der Umfangsfläche an, während die Kegelmantelteilflächen der unteren Bereiche nicht anliegen sondern freiliegen, wie dies in Figur 2 durch den Spalt S angedeutet ist. Hierzu sind die den Zentren Z1 zugeordneten Ebenen - vergleiche Figur 3 - so ausgerichtet, so daß sie die Verbindungsbolzen 45 der Riegelbolzen 36 mittig schneiden und sind die Riegelbolzen 36 mittels entsprechend bemessener Gleitlager 49 im Adaptergehäuse 30 parallel geführt.As a result of the eccentricity - bearing play S - of the lower conical surface portions of the openings 21, 22 of the locking plate 16 in relation to FIGS. 1 to 3, in the engagement position according to FIG. 2, the frustoconical end regions 50 of the locking bolts 36 lie only on the upper partial conical surface surfaces of the openings 21, 22 , ie over approximately 180 ° of the circumferential surface, while the conical surface areas of the lower regions do not lie but are exposed, as is indicated by the gap S in FIG. 2. For this purpose, the planes assigned to the centers Z1 - compare FIG. 3 - are aligned so that they cut the connecting bolts 45 of the locking bolts 36 in the center and the locking bolts 36 are guided in parallel in the adapter housing 30 by means of correspondingly dimensioned slide bearings 49.

In dieser Eingriffsstellung, in der das Adaptergehäuse 30 zwischen der an der Kupplungsachse 19 anliegenden Widerlagerfläche 32 und der Spannfläche 20 der Riegelplatte 16, die an der Stirnseite 34 des Adaptergehäuses anliegt, liegt, verspannen die Riegelbolzen 36 das Adaptergehäuse 30 auf der Adapterplatte 12 infolge des beim Bewegen der Riegelbolzen 36 aus der in Figur 1 dargestellten Ruhelage in die in Figur 2 dargestellte Wirklage als Keilgetriebe wirkenden Kegelmantelteilflächen und bilden die zweite lastübertragende Lagerstelle der Schnellwechselvorrichtung, welch der die erste Lagerstelle bildenden Kupplungsachse 16, die von den Aufnahmenklauen 31 umfaßt ist, gegenüberliegt.In this engagement position, in which the adapter housing 30 between the abutment surface resting on the coupling axis 19 32 and the clamping surface 20 of the locking plate 16, which lies against the end face 34 of the adapter housing, the locking bolts 36 clamp the adapter housing 30 on the adapter plate 12 as a result of the locking bolts 36 being moved from the rest position shown in FIG. 1 to the position shown in FIG. 2 Actual position shown as a wedge gear acting conical surface areas and form the second load-transmitting bearing point of the quick-change device, which is opposite the coupling axis 16 forming the first bearing point, which is encompassed by the receiving claws 31.

Selbstverständlich sind auch andere geometrische Formen der Spannflächen und Riegelflächen möglich, ohne daß hierbei der Erfindungsgedanke verlassen wird; beispielsweise sind anstelle von Kegelmantelflächen auch ebene Schrägflächen für die beweglichen Riegelorgane und deren zugeordnete gehäusefeste Kupplungsglieder möglich. Entscheidend ist lediglich, daß ein ausreichendes Lagerspiel S zwischen den betroffenen und ein Keilgetriebe bildenden Kupplungsgliedern vorhanden ist.Of course, other geometrical shapes of the clamping surfaces and locking surfaces are also possible without leaving the inventive idea; For example, instead of conical surface areas, flat inclined surfaces for the movable locking members and their associated housing-fixed coupling members are also possible. The only decisive factor is that there is sufficient bearing play S between the coupling members concerned and forming a wedge gear.

Claims (5)

Schnellwechselvorrichtung für Erdbewegungsfahrzeuge zum Auswechseln von Arbeitsgeräten, die über einen an einem Ausleger der Erdbewegungsmaschine um eine horizontale Achse schwenkbaren Adapter mit diesem lösbar verbunden sind, der als feste Klauen ausgebildete und als verschiebbare Verriegelungsbolzen gelagerte Kupplungsglieder aufweist, denen damit korrespondierende Kupplungsglieder am Arbeitsgerät zugeordnet sind, von denen das eine Kupplungsglied eine Öffnungen für den Eintritt der verschiebbaren Kupplungsglieder aufweisende Riegelplatte ist und das andere Kupplungsglied eine von den Klauen zumindest teilweise umfaßte Kupplungsachse bildet, wobei über die Widerlagerflächen der Kupplungsglieder die Verspannung zwischen Adapter und Arbeitsgerät erfolgt, dadurch gekennzeichnet, daß die eine Widerlagerfläche (32) der Kupplungsglieder des Adapters (30) als beidseitig von den Klauen (31) begrenzte zylindermantelförmige Widerlagerfläche ausgebildet ist zwecks Abstützung an der Mantelfläche der Kupplungsachse (19) des Arbeitsgerätes, während die andere Widerlagerfläche (34) eben ausgebildet und zu einer gedachten, beide Widerlagerflächen (32, 34) verbindenden Ebene geneigt angeordnet ist, daß die Riegelplatte (16) eine der Widerlagerfläche (34) des Adapters (30) zugewandte und mit dieser korrespondierende und im Verrriegelungszustand vollflächig aufliegende Widerlagerfläche (20) aufweist, und daß die Widerlagerflächen (34, 20) mit den Flächen der verschiebbaren Kupplungsglieder und den mit diesen korrespondierenden Öffnungen in der Riegelplatte (16) ein ein Aufgleiten und Verspannen der einander zugewandten Widerlagerflächen (34, 20; 32, 19) von Adapter und Arbeitsgerät erzwingendes Keilgetriebe bilden.Quick-change device for earthmoving vehicles for replacing work tools, which are detachably connected to the boom of the earthmoving machine about a horizontal axis by an adapter, which has coupling members designed as fixed claws and mounted as displaceable locking bolts, to which corresponding coupling members on the working device are assigned, of which the one coupling member has an opening for the entry of the sliding coupling members locking plate and the other coupling member forms a coupling axis at least partially encompassed by the claws, the tension between adapter and implement being effected via the abutment surfaces of the coupling members, characterized in that the one Abutment surface (32) of the coupling members of the adapter (30) is designed as a cylindrical jacket-shaped abutment surface delimited on both sides by the claws (31) for the purpose of support the lateral surface of the coupling axis (19) of the implement, while the other abutment surface (34) is flat and is inclined to an imaginary plane connecting both abutment surfaces (32, 34) that the locking plate (16) is one of the abutment surface (34) of the Adapters (30) facing and with this corresponding and in the locking state fully lying abutment surface (20), and that the abutment surfaces (34, 20) with the surfaces of the sliding coupling members and the corresponding openings in the locking plate (16) a sliding and bracing the mutually facing abutment surfaces (34, 20; 32, 19) form a wedge gear that forces the adapter and the implement. Schnellwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kupplungsflächen (50) der verschiebbaren Kupplungsglieder (36) und die Kupplungsflächen der zugeordneten Kupplungsglieder (21, 22) der Riegelplatte (16) als über einen Umfangswinkel von etwa 180° miteinander korrespondierende Kegelmantelflächen ausgebildet sind, und daß die den Umfangswinkel auf 360° ergänzenden Umfangsteilflächen der der Riegelplatte (16) zugeordneten Kupplungsglieder (21, 22) mit den zugeordneten umfangsflächenbereichen der verschiebbaren Kupplungsglieder ein vorbestimmtes Lagerspiel (S) einschließen.Quick-change device according to claim 1, characterized in that the coupling surfaces (50) of the displaceable coupling members (36) and the coupling surfaces of the associated Coupling members (21, 22) of the locking plate (16) are designed as conical outer surfaces which correspond to one another over a circumferential angle of approximately 180 °, and that the circumferential partial surfaces of the coupling members (21, 22) assigned to the locking plate (16), which supplement the circumferential angle to 360 °, with the include a predetermined bearing clearance (S) associated with the circumferential surface areas of the displaceable coupling members. Schnellwechselvorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die als Riegelbolzen (36) ausgebildeten verschiebbaren Kupplungsglieder 360° umfassende Umfangsflächen aufweisen, und daß die der Riegelplatte (16) zugeordneten und mit den Umfangsflächen (50) der verschiebbaren Kupplungsglieder korrespondierenden Kupplungsglieder (21, 22) zwei in einem Abstand (S) angeordnete Zentren (Z1, Z2) aufweisen, von denen das eine Zentrum (Z1) zu dem zugeordneten Riegelbolzen (36) mittig liegt.Quick-change device according to claims 1 and 2, characterized in that the sliding coupling members designed as locking bolts (36) have 360 ° circumferential surfaces, and in that the coupling elements (21) assigned to the locking plate (16) and corresponding to the peripheral surfaces (50) of the sliding coupling elements , 22) have two centers (Z1, Z2) arranged at a distance (S), one center (Z1) of which lies centrally to the associated locking bolt (36). Schnellwechselvorrichtung nach einem oder mehreren der vorhergehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Riegelbolzen (36) mittels Lagerhülsen (49) im Adaptergehäuse (30) parallel geführt und über eine gemeinsame Schaltwelle (44) mittels je eines Kniehebelgetriebes (41, 42, 43, 45) unter Zwischenschaltung je einer Druckfeder (38) aus der Ruhelage in die unterhalb der Totpunktlage liegende Wirkstellung überführbar sind.Quick-change device according to one or more of the preceding claims 1 to 3, characterized in that the locking bolts (36) are guided in parallel in the adapter housing (30) by means of bearing sleeves (49) and by means of a toggle lever mechanism (41, 42, 43, 45) with the interposition of a compression spring (38) from the rest position into the operative position below the dead center position. Schnellwechselvorrichtung nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die ebenen Widerlagerflächen (20, 34) zur senkrechten Fläche (20') eine Neigung von 3° bis 35°, vorzugsweise von 5° bis 15°, aufweisen und daß die Kupplungsflächen (50, 21, 22) der Neigung der Widerlagerflächen entsprechende Neigungswinkel aufweisen.Quick-change device according to claims 1 to 4, characterized in that the flat abutment surfaces (20, 34) to the vertical surface (20 ') have an inclination of 3 ° to 35 °, preferably 5 ° to 15 °, and that the coupling surfaces ( 50, 21, 22) have angles of inclination corresponding to the inclination of the abutment surfaces.
EP93107458A 1992-05-08 1993-05-07 Quick coupling device Expired - Lifetime EP0569026B1 (en)

Applications Claiming Priority (2)

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DE4214569A DE4214569C2 (en) 1992-05-08 1992-05-08 Quick change device
DE4214569 1992-05-08

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EP0569026A1 true EP0569026A1 (en) 1993-11-10
EP0569026B1 EP0569026B1 (en) 1997-03-12

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EP (1) EP0569026B1 (en)
AT (1) ATE150121T1 (en)
CA (1) CA2076441C (en)
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GB201108376D0 (en) * 2011-05-19 2011-06-29 Shadowfiction Ltd An automatic quick hitch for an extractor
US8833480B2 (en) 2011-06-24 2014-09-16 Caterpillar Inc. Coupler with visibility window
US8684623B2 (en) 2012-05-30 2014-04-01 Caterpillar Inc. Tool coupler having anti-release mechanism
US9217235B2 (en) 2012-05-30 2015-12-22 Caterpillar Inc. Tool coupler system having multiple pressure sources
DE102014101001B4 (en) 2014-01-28 2019-09-05 Jürgen Wolf Quick-change device for a construction equipment with boom
DE102014019967B3 (en) * 2014-01-28 2021-04-15 Jürgen Wolf Quick-change device for construction equipment with a boom
DE102014116245B4 (en) 2014-11-07 2016-11-10 Bela Cseri Quick change device of a work machine
DE102020110523A1 (en) 2020-04-17 2021-10-21 Liebherr-Hydraulikbagger Gmbh Quick coupling with centering device

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Cited By (13)

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Publication number Priority date Publication date Assignee Title
GB2259293B (en) * 1992-10-20 1996-01-10 Hugh Robert Edeleanu Excavator Bucket Coupling System
WO1994025689A1 (en) * 1993-04-26 1994-11-10 Dam Rasmussen Kaj Implement coupling for excavator or loader
GB2286382A (en) * 1994-02-04 1995-08-16 Bamford Excavators Ltd Device for releasably mounting a working implement
EP1365073A1 (en) * 2002-05-23 2003-11-26 Franz Hauer Device for fixing an attachment to a carrying vehicle
DE102004014824B4 (en) 2004-03-24 2019-08-01 Lehnhoff Hartstahl Gmbh Quick-change device with a hydraulic coupling for the media on a construction equipment
WO2005093172A1 (en) * 2004-03-24 2005-10-06 Lehnhoff Hartstahl Gmbh & Co. Quick-change device with a hydraulic coupling for media on a building implement
WO2005093171A1 (en) 2004-03-24 2005-10-06 Lehnhoff Harstahl Gmbh & Co. Quick change attachment comprising a hydraulic coupling for media on a piece of construction equipment
WO2007131800A1 (en) 2006-05-17 2007-11-22 Lehnhoff Hartstahl Gmbh & Co. Kg Quick-change device
DE102006023420B4 (en) * 2006-05-17 2013-02-28 Lehnhoff Hartstahl Gmbh & Co. Kg Quick change device
DE102010034738A1 (en) 2009-08-21 2011-02-24 Perwein Baumaschinen-Systeme Gmbh Coupling device for fastening working device at excavator boom, has locking elements with front surfaces that comprise same inclination angle for forming parallel sliding faces, such that frictional tension between front surfaces is reduced
WO2016198638A1 (en) * 2015-06-12 2016-12-15 Lehnhoff Hartstahl Gmbh & Co. Kg Quick-change device
AU2016275627B2 (en) * 2015-06-12 2019-05-16 Lehnhoff Hartstahl Gmbh Quick-change device
US10934680B2 (en) 2015-06-12 2021-03-02 Lehnhoff Hartstahl Gmbh Quick-change device

Also Published As

Publication number Publication date
CA2076441A1 (en) 1993-11-09
US5333695A (en) 1994-08-02
NO179591C (en) 1996-11-06
ES2102548T3 (en) 1997-08-01
ATE150121T1 (en) 1997-03-15
NO931626L (en) 1993-11-09
DE59305686D1 (en) 1997-04-17
EP0569026B1 (en) 1997-03-12
DE4214569C1 (en) 1993-12-16
DE4214569C2 (en) 2001-12-20
NO931626D0 (en) 1993-05-05
NO179591B (en) 1996-07-29
CA2076441C (en) 2004-11-16

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