EP1375757B1 - Working vehicle with a tool quick coupler and an identification system for the tool - Google Patents

Working vehicle with a tool quick coupler and an identification system for the tool Download PDF

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Publication number
EP1375757B1
EP1375757B1 EP03013258A EP03013258A EP1375757B1 EP 1375757 B1 EP1375757 B1 EP 1375757B1 EP 03013258 A EP03013258 A EP 03013258A EP 03013258 A EP03013258 A EP 03013258A EP 1375757 B1 EP1375757 B1 EP 1375757B1
Authority
EP
European Patent Office
Prior art keywords
tool
coupling
boom
construction machine
quick coupling
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
EP03013258A
Other languages
German (de)
French (fr)
Other versions
EP1375757A1 (en
Inventor
Rolf Mieger
Thomas Zitterbart
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.)
Liebherr Hydraulikbagger GmbH
Original Assignee
Liebherr Hydraulikbagger GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liebherr Hydraulikbagger GmbH filed Critical Liebherr Hydraulikbagger GmbH
Publication of EP1375757A1 publication Critical patent/EP1375757A1/en
Application granted granted Critical
Publication of EP1375757B1 publication Critical patent/EP1375757B1/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
    • 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
    • E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2271—Actuators and supports therefor and protection therefor
    • 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
    • E02F9/26—Indicating devices

Definitions

  • the invention relates to a construction machine with quick coupling for coupling a tool to a boom according to the preamble of claim 1.
  • the construction machinery such as hydraulic excavators
  • hydraulic excavators are equipped with very different tools, such as with buckets, shovels, grippers, hammers, shears, milling, fangs, hooks and much more.
  • wheel loaders and other construction machinery which have corresponding boom, can be used.
  • multifunctional machines by the use of different tools.
  • the transmission of the kinematics data may cause a collision, e.g. be prevented with the cabin or overhead lines, etc.
  • a control device and a control method for a construction machine is known.
  • a memory for identification data for the tool is provided to identify a conventionally attached tool in the tool.
  • the data stored in memory are transmitted to a control unit in the construction machine.
  • the tool must be connected to the construction machine not only hydraulically but also electrically.
  • the object of the invention is therefore to develop a construction machine with quick coupling such that technical or safety risks in automatic Coupling a tool to a construction machine safely prevented and the function is properly guaranteed.
  • an identification system which includes on the one hand on the tool side as means for identifying the type, size, weight and dimension, the tool a transponder and the construction machine side means for reading and processing the tool-related information.
  • this identification system can be communicated in the first step in the cultivation of the tool of the construction machine on the corresponding identification system, which tool was grown, d. H. what weight and what content of the possibly attached backhoe, what oil quantity and which oil pressure the tool needs to operate or what dimensions the tool has.
  • the data is transmitted to the on-board computer, which then makes it available, for example, to the hydraulic pump for setting the correct amount and the pressure of the hydraulic oil. From the transmitted weights and dimensions, the available payload can be determined and displayed. Furthermore, the possible range, digging depth and height can be displayed or fed as limit values into the control of the boom.
  • the transponder interacts with the construction-machine-side means for reading and processing the information. These are preferably part of the on-board computer or they are at least connected to this.
  • Fig. 1 as a construction machine by way of example a hydraulic excavator 10 is shown, on the boom 12, a tool changer 14 is grown with energy conduction. This executed as a quick coupler tool changer 14 can accommodate any tool 16 automatically, at the same time the power circuit, for example, in the present example, the hydraulic circuit is coupled when receiving the tool 16.
  • a spoon 16 attached to a hydraulic excavator boom is shown in FIGS. 2a and 2b respectively.
  • This spoon 16 has a tool-side means 18 for identifying the type and size of the tool in the form of a transponder.
  • This transponder 18 communicates with the cultivation of the spoon 16 to the on-board computer of the hydraulic excavator 10, not shown here, with what the weight of the spoon is and what content this has. Furthermore, the dimensions of the spoon 16 are forwarded to the on-board computer. In a memory of the on-board computer, which is likewise not shown here, the oil quantities or pressure ratios necessary for the attached spoon are stored for the hydraulic circuit.

Abstract

The excavator (10) has a hydraulically operated arm (12) able to operate a variety of tools (16) through quick automatic connections and carrying a transmitter unit (14) which enables the machine to be operated correctly with respect to the fitted tool.

Description

Die Erfindung betrifft eine Baumaschine mit Schnellkupplung zum Ankuppeln eines Werkzeuges an einen Ausleger nach dem Oberbegriff des Anspruchs 1.The invention relates to a construction machine with quick coupling for coupling a tool to a boom according to the preamble of claim 1.

Es sind bereits Baumaschinen mit Schnellkupplung zum Ankuppeln eines Werkzeuges an einen Ausleger bekannt. So weist beispielsweise die DE 31 35 150 C1 einen auslegerseitigen Schnellkupplungsteil und einen werkzeugseitigen Schnellkupplungsteil mit einer Energiekreiskupplung auf. Bei Hydraulikbaggern werden als Energiekreiskupplung Hydraulikkupplungen verwendet. Mit den bekannten Schnellkupplungen ist ein automatisches Ankuppeln des Werkzeuges möglich, wobei der werkzeugseitige Energieanschluß an den entsprechenden auslegerseitigen Energieanschluß ebenfalls automatisch gekoppelt wird.There are already known construction machines with quick coupling for coupling a tool to a boom. For example, the DE 31 35 150 C1 a boom-side quick coupling part and a tool-side quick coupling part with a power circuit coupling on. In hydraulic excavators hydraulic couplings are used as a power circuit clutch. With the known quick couplings automatic coupling of the tool is possible, wherein the tool-side power connection is also automatically coupled to the corresponding jib-side power connection.

Die Baumaschinen, beispielsweise Hydraulikbagger, werden mit sehr unterschiedlichen Werkzeugen bestückt, beispielsweise mit Tieflöffeln, Schaufeln, Greifern, Hämmern, Scheren, Fräsen, Reißzähnen, Lasthaken und vieles mehr. Neben dem vorgenannten Hydraulikbagger sind aber auch Radlader und andere Baumaschinen, die entsprechende Ausleger aufweisen, einsetzbar. Neben ihrer typischen Verwendung sind diese Baumaschinen durch den Anbau von verschiedenen Werkzeugen zu Multifunktionsmaschinen geworden.The construction machinery, such as hydraulic excavators, are equipped with very different tools, such as with buckets, shovels, grippers, hammers, shears, milling, fangs, hooks and much more. In addition to the aforementioned hydraulic excavator but also wheel loaders and other construction machinery, which have corresponding boom, can be used. In addition to their typical These construction machines have become multifunctional machines by the use of different tools.

Durch die Verwendung von Werkzeugschnellwechslern und der Möglichkeit, gleichzeitig mit dem Ankupplungsvorgang auch die notwendige Energieversorgung elektrischer oder hydraulischer Art herzustellen, ist das Aufnehmen verschiedener Werkzeuge grundsätzlich wesentlich erleichtert worden. Dieser erleichterte Anbau führt aber zu dem Problem, daß von dem Bedienpersonal der Baumaschine eventuell auftretende technische und sicherheitstechnische Probleme nicht erfasst werden. So kann ein technisches Problem beispielsweise darin bestehen, daß beim Anbau eines hydraulisch angetriebenen Werkzeugs der hydraulische Druck der baumaschinenseitigen Hydraulikeinrichtung, die Fördermenge oder auch das eingesetzte Öl zu dem angebauten Werkzeug nicht passen. Dies kann einerseits zur Funktionsuntüchtigkeit, andererseits aber auch bis hin zur Zerstörung des Werkzeugs führen. Sicherheitstechnische Probleme ergeben sich beispielsweise durch den Anbau eines zu großen oder zu schweren Löffels, da hier die Standsicherheit der Baumaschine beim Lastheben nicht mehr gewährleistet ist.Through the use of quick tool changers and the possibility of producing the necessary energy supply of electrical or hydraulic type simultaneously with the coupling process, it has basically been made much easier to pick up different tools. However, this facilitated cultivation leads to the problem that may be detected by the operating personnel of the construction machine possibly occurring technical and safety problems. Thus, a technical problem, for example, consist in the fact that do not fit when attaching a hydraulically driven tool, the hydraulic pressure of the construction-side hydraulic device, the flow or the oil used to the attached tool. On the one hand, this can lead to inoperability, but on the other hand, even to the destruction of the tool. Safety problems arise, for example, by the cultivation of a too large or too heavy spoon, since the stability of the construction machine when lifting the load is no longer guaranteed.

Im weiteren kann durch die Übermittlung der Kinematikdaten eine Kollision z.B. mit der Kabine oder auch Oberleitungen etc. verhindert werden.Furthermore, the transmission of the kinematics data may cause a collision, e.g. be prevented with the cabin or overhead lines, etc.

Aus der EP - A - 0 989 242 ist bereits eine Steuereinrichtung und ein Steuerverfahren für eine Baumaschine bekannt. Dort wird zur Identifizierung eines in konventioneller Weise angebauten Werkzeuges im Werkzeug ein Speicher für Identifikationsdaten für das Werkzeug vorgesehen. Über eine am Werkzeug und am Ausleger vorgesehene Sende- und Empfangsvorrichtung werden die im Speicher abgelegten Daten an ein Steuergerät in der Baumaschine übertragen. Hierzu aber muß das Wekzeug mit der Baumaschine nicht nur hydraulisch sondern auch elektrisch verbunden werden.From the EP - A - 0 989 242 already a control device and a control method for a construction machine is known. There, a memory for identification data for the tool is provided to identify a conventionally attached tool in the tool. About a provided on the tool and on the boom transmitting and receiving device, the data stored in memory are transmitted to a control unit in the construction machine. For this purpose, however, the tool must be connected to the construction machine not only hydraulically but also electrically.

Aufgabe der Erfindung ist es daher, eine Baumaschine mit Schnellkupplung derart weiterzubilden, daß technische bzw. sicherheitstechnische Risiken beim automatischen Ankuppeln eines Werkzeuges an eine Baumaschine sicher verhindert werden sowie die Funktion einwandfrei gewährleistet ist.The object of the invention is therefore to develop a construction machine with quick coupling such that technical or safety risks in automatic Coupling a tool to a construction machine safely prevented and the function is properly guaranteed.

Erfindungsgemäß wird diese Aufgabe ausgehend von einer gattungsgemäßen Baumaschine mit Schnellkupplung durch die Kombination der Merkmale des Anspruchs 1 gelöst. Demnach ist ein Identifizierungssystem vorgesehen, das einerseits werkzeugseitig als Mittel zur Identifizierung der Art, Größe, des Gewichts und der Abmessung, des Werkzeugs einen Transponder sowie baumaschinenseitig ein Mittel zum Auslesen und Verarbeiten der werkzeugbezogenen Informationen beinhaltet.This object is achieved on the basis of a generic construction machine with quick coupling by combining the features of claim 1. Accordingly, an identification system is provided which includes on the one hand on the tool side as means for identifying the type, size, weight and dimension, the tool a transponder and the construction machine side means for reading and processing the tool-related information.

Mit diesem erfindungsgemäßen Identifizierungssystem kann im ersten Schritt beim Anbau des Werkzeuges der Baumaschine über das entsprechende Identifizierungssystem mitgeteilt werden, welches Werkzeug angebaut wurde, d. h. welches Gewicht und welchen Inhalt der gegebenenfalls angebaute Tieflöffel hat, welche Ölmenge und welchen Öldruck das Werkzeug zum Betrieb benötigt bzw. welche Abmessungen das Werkzeug hat.With this identification system according to the invention can be communicated in the first step in the cultivation of the tool of the construction machine on the corresponding identification system, which tool was grown, d. H. what weight and what content of the possibly attached backhoe, what oil quantity and which oil pressure the tool needs to operate or what dimensions the tool has.

In einem zweiten Schritt werden dann dem Bordrechner die Daten übermittelt, die dieser dann beispielsweise an die Hydraulikpumpe zum Einstellen der richtigen Menge und des Drucks des Hydrauliköls zur Verfügung stellt. Aus den übermittelten Gewichten und Abmessungen kann die zur Verfügung stehende Nutzlast ermittelt und angezeigt werden. Weiterhin können die mögliche Reichweite, Grabtiefe und Höhe angezeigt werden bzw. als Grenzwerte in die Steuerung des Auslegers eingespeist werden.In a second step, the data is transmitted to the on-board computer, which then makes it available, for example, to the hydraulic pump for setting the correct amount and the pressure of the hydraulic oil. From the transmitted weights and dimensions, the available payload can be determined and displayed. Furthermore, the possible range, digging depth and height can be displayed or fed as limit values into the control of the boom.

Der Transponder wirkt mit den baumaschinenseitigen Mitteln zum Auslesen und Verarbeiten der Informationen zusammen. Diese sind vorzugsweise Teil des Bordrechners oder sie sind zumindest mit diesem verbunden.The transponder interacts with the construction-machine-side means for reading and processing the information. These are preferably part of the on-board computer or they are at least connected to this.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus der beigefügten Zeichnung, in der eine bevorzugte Ausführungsform beispielhaft dargestellt ist. Es zeigen:

Fig. 1:
eine schematische Seitenansicht einer Baumaschine mit Schnellkupplung nach einer Ausführungsform der vorliegenden Erfindung,
Fig. 2a:
eine detailliertere Teilansicht der schematischen Darstellung gemäß Fig. 1 und
Fig. 2b:
eine Ansicht in Pfeilrichtung A gemäß Fig. 2a.
Further details and advantages of the invention will become apparent from the accompanying drawings in which a preferred embodiment is shown by way of example. Show it:
Fig. 1:
a schematic side view of a construction machine with quick coupling according to an embodiment of the present invention,
Fig. 2a:
a more detailed partial view of the schematic representation of FIG. 1 and
Fig. 2b:
a view in the direction of arrow A of FIG. 2a.

In Fig. 1 ist als Baumaschine beispielhaft ein Hydraulikbagger 10 dargestellt, an dessen Ausleger 12 ein Werkzeugwechsler 14 mit Energiedurchführung angebaut ist. Dieser als Schnellwechsler ausgeführte Werkzeugwechsler 14 kann ein beliebiges Werkzeug 16 automatisch aufnehmen, wobei bei Aufnahme des Werkzeuges 16 gleichzeitig der Energiekreis, beispielsweise im vorliegenden Beispiel der Hydraulikkreis, angekuppelt wird.In Fig. 1 as a construction machine by way of example a hydraulic excavator 10 is shown, on the boom 12, a tool changer 14 is grown with energy conduction. This executed as a quick coupler tool changer 14 can accommodate any tool 16 automatically, at the same time the power circuit, for example, in the present example, the hydraulic circuit is coupled when receiving the tool 16.

Gemäß der vergrößert dargestellten Ausgestaltung des Auslegers 12 mit Schnellkupplung 14 und Werkzeug 16 ist in Fig. 2a bzw. 2b ein an einem Hydraulikbaggerausleger angebauter Löffel 16 gezeigt. Dieser Löffel 16 weist ein werkzeugseitiges Mittel 18 zur Identifizierung der Art und Größe des Werkzeugs in Form eines Transponders auf. Dieser Transponder 18 teilt beim Anbau des Löffels 16 dem hier nicht näher dargestellten Bordrechner des Hydraulikbaggers 10 mit, wie hoch das Gewicht des Löffels ist und welchen Inhalt dieser hat. Weiterhin werden die Abmessungen des Löffels 16 an den Bordrechner weitergegeben. In einem hier ebenfalls nicht näher dargestellten Speicher des Bordrechners sind die zu dem angebauten Löffel notwendigen Ölmengen bzw. Druckverhältnisse für den Hydraulikkreis abgelegt. Nach Einlesen des Typs des Löffels 16 werden diese Daten dann vom Bordrechner bereitgestellt, so daß die Hydraulikpumpe auf die richtige Ölmenge und den richtigen Öldruck eingestellt werden kann. Weiterhin kann gleichzeitig die Nutzlast und die mögliche Reichweite bzw. Grabtiefe und Höhe des Baggerauslegers bestimmt werden. Gleichzeitig können entsprechende Grenzwerte in einer Sicherheitssteuerung erzeugt werden, die eine Fehlbedienung des Hydraulikbaggers sicher verhindert. Derartige Sicherheitssteuerungen sind bei bekannten Hydraulikbaggern bereits vorgesehen und brauchen an dieser Stelle nicht weiter erläutert werden. Sie verhindern z.B., daß die Baumaschine aufgrund eines zu weit ausladenden schweren Löffels in eine instabile Lage versetzt wird.According to the embodiment of the cantilever 12 with quick coupling 14 and tool 16 shown enlarged, a spoon 16 attached to a hydraulic excavator boom is shown in FIGS. 2a and 2b respectively. This spoon 16 has a tool-side means 18 for identifying the type and size of the tool in the form of a transponder. This transponder 18 communicates with the cultivation of the spoon 16 to the on-board computer of the hydraulic excavator 10, not shown here, with what the weight of the spoon is and what content this has. Furthermore, the dimensions of the spoon 16 are forwarded to the on-board computer. In a memory of the on-board computer, which is likewise not shown here, the oil quantities or pressure ratios necessary for the attached spoon are stored for the hydraulic circuit. After reading the type of the bucket 16, these data are then provided by the on-board computer, so that the hydraulic pump can be adjusted to the correct amount of oil and the correct oil pressure. Furthermore, at the same time the payload and the possible range or digging depth and height of the excavator boom can be determined. At the same time corresponding limit values can be generated in a safety control, which is a malfunction of the hydraulic excavator safely prevented. Such safety controls are already provided in known hydraulic excavators and need not be further explained at this point. They prevent, for example, that the construction machine is placed in an unstable position due to an excessively bulky heavy bucket.

Claims (1)

  1. Construction machine (10) with a quick coupling for coupling a tool (16) to a boom (12), comprising a quick coupling part on the boom side and a quick coupling part on the tool side, with a power circuit coupling in the form of a hydraulic coupling for automatically coupling a power connection on the tool side to a power connection on the boom side, characterized by an identification system, composed of a transponder (18) on the tool side which serves to identify the type, size, weight and dimensions of the tool (16), and of means on the construction machine side which serve to read out and process the information of the transponder (18) and which are connected to the on-board computer of the construction machine (10), for transmitting the data to the on-board computer when attaching the tool (16) via the quick coupling (14), such that an available useful load can be determined from the transmitted weights and dimensions and displayed and such that the reach, height and, where appropriate, the digging depth can be fed as limit values into the control system of the boom (12).
EP03013258A 2002-06-19 2003-06-12 Working vehicle with a tool quick coupler and an identification system for the tool Expired - Lifetime EP1375757B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20209518U 2002-06-19
DE20209518U DE20209518U1 (en) 2002-06-19 2002-06-19 Construction machine with quick coupling

Publications (2)

Publication Number Publication Date
EP1375757A1 EP1375757A1 (en) 2004-01-02
EP1375757B1 true EP1375757B1 (en) 2007-09-12

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EP03013258A Expired - Lifetime EP1375757B1 (en) 2002-06-19 2003-06-12 Working vehicle with a tool quick coupler and an identification system for the tool

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US (1) US6892822B2 (en)
EP (1) EP1375757B1 (en)
JP (1) JP2004019436A (en)
CN (1) CN1472401A (en)
AT (1) ATE373145T1 (en)
CA (1) CA2431808C (en)
DE (2) DE20209518U1 (en)
ES (1) ES2290383T3 (en)
PL (1) PL205673B1 (en)
RU (1) RU2003118412A (en)

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Publication number Publication date
CN1472401A (en) 2004-02-04
RU2003118412A (en) 2004-12-20
US20030233773A1 (en) 2003-12-25
JP2004019436A (en) 2004-01-22
CA2431808C (en) 2012-08-14
EP1375757A1 (en) 2004-01-02
ES2290383T3 (en) 2008-02-16
PL205673B1 (en) 2010-05-31
ATE373145T1 (en) 2007-09-15
DE20209518U1 (en) 2003-10-30
DE50308150D1 (en) 2007-10-25
PL360529A1 (en) 2003-12-29
US6892822B2 (en) 2005-05-17
CA2431808A1 (en) 2003-12-19

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