EP1651818A1 - Dispositif de fixation interchangeable d'un outil, par ex, d'un godet d'excavatrice, sur le bras d'une excavatrice ou un vehicule - Google Patents

Dispositif de fixation interchangeable d'un outil, par ex, d'un godet d'excavatrice, sur le bras d'une excavatrice ou un vehicule

Info

Publication number
EP1651818A1
EP1651818A1 EP04741287A EP04741287A EP1651818A1 EP 1651818 A1 EP1651818 A1 EP 1651818A1 EP 04741287 A EP04741287 A EP 04741287A EP 04741287 A EP04741287 A EP 04741287A EP 1651818 A1 EP1651818 A1 EP 1651818A1
Authority
EP
European Patent Office
Prior art keywords
gripper
arrangement according
holding
section
displaceable
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.)
Withdrawn
Application number
EP04741287A
Other languages
German (de)
English (en)
Inventor
Dietmar Martin
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.)
Josef Martin GmbH and Co KG
Original Assignee
Josef Martin 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 Josef Martin GmbH and Co KG filed Critical Josef Martin GmbH and Co KG
Publication of EP1651818A1 publication Critical patent/EP1651818A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E02F3/3622—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 locking element acting on a pin

Definitions

  • the invention relates to an arrangement for the interchangeable fastening of an attachment, e.g. an excavator shovel, on an excavator boom or a vehicle, two attaching bolts arranged parallel to each other at a distance from each other, which can be gripped by grippers arranged on the excavator boom or on the vehicle on a retaining element and adjustable relative to one another, the grippers being at least partially open insertion openings for have the retaining bolts, and wherein a gripper is fixedly connected to the holding element and a gripper is held in a linear manner in a guide of the holding element.
  • an attachment e.g. an excavator shovel
  • two attaching bolts arranged parallel to each other at a distance from each other, which can be gripped by grippers arranged on the excavator boom or on the vehicle on a retaining element and adjustable relative to one another, the grippers being at least partially open insertion openings for have the retaining bolts, and wherein a gripper is fixedly connected
  • WO 93/01366 An arrangement as known from WO 93/01366 is common to all attachments that can be coupled to an excavator boom or to a vehicle, such as e.g. Excavator shovels, excavator signs, snow removal signs, tools, etc. can be used effectively. In the area of the arrangement for the interchangeable fastening of the add-on part, relatively high forces arise which have to be taken over by this arrangement.
  • WO 93/01 366 does not deal with a special guide for the gripper and an optimization of the power transmission between the boom or vehicle and the attachment.
  • US-A-4 881 867 shows a guide of a displaceable gripper which absorbs forces perpendicular to the direction of displacement.
  • Another known device for the interchangeable attachment of a tool-like attachment to the front end of an excavator arm provides that the insertion openings of two grippers are aligned offset from one another by approximately 90 °. After threading the one gripper into the one holding bolt, the entire arrangement is pivoted about this holding bolt until the other gripper with the insertion opening lying transversely to it grips the other holding bolt. The insertion opening of the second gripper can now be blocked by means of a hydraulically displaceable locking element. All of the forces affect the locking element.
  • Another known tool changing device (W097 / 28314) for hydraulic excavators provides a fixed and a pivotable gripper. Here, too, there is a large torque on the swiveling gripper, which is increased especially when operating an excavator.
  • a quick-change device for an excavator bucket to be attached to an excavator boom is known (EP-A-0058058), on the one hand there is a gripper which can be pressed onto a correspondingly designed bar.
  • a hook-like part is arranged on the boom, which has an opening facing towards a hydraulic drive with an oblique boundary surface on one side.
  • a clamping shoe arranged on the piston of the hydraulic drive has a rectified oblique boundary surface, so that the interaction of the two oblique boundary surfaces allows locking and tensioning.
  • Movable suspension of the hydraulic drive cylinder is also essential here.
  • the object of the present invention is to manufacture an arrangement of the type mentioned in the introduction more simply and, above all, with structurally simpler means, in order thereby to be able to achieve a purely mechanical locking and solution between the attachment part and the excavator boom or vehicle.
  • the add-on part is locked in a simple manner with the holding element, so that a rigid connection is ensured after this locking, without a load being created in the opening direction on the displaceable gripper.
  • a small force is therefore sufficient to hold the displaceable gripper in the closed position, this force being able to be applied by a structurally simple spring element.
  • the displaceable gripper is designed as an essentially T-shaped component, one part engaging in the guides of the holding element and the other part being designed as a hook-like section which projects freely at approximately a right angle to it. So only one part is required for the slidable engagement in the guide and the hook-like section, which can partially encompass the one holding bolt.
  • a special design variant provides that a mounting element is fixedly connected to the displaceable gripper, which has means for fastening one end of the spring element. A connection to the spring element can thus be created in a simple manner.
  • displaceable gripper and the mounting element are screwed together. This enables simple assembly or disassembly and, in addition, the movable gripper is not a complicated part to manufacture.
  • the optimal effect can be brought about in a simple manner precisely by the design of the gripper which can be displaced in a straight line and the arrangement of a spring element. It is therefore provided that the spring element acts on the one hand on the mounting element and on the other hand on a fixed part of the holding element.
  • the mounting element have a freely projecting flange which covers the spring element in the closed position of the displaceable gripper toward the attachment part.
  • the spring element is formed by at least one helical spring.
  • a very simple structural design can thus be provided, so that no expensive and fault-prone hydraulic or pneumatic elements are required.
  • An advantageous arrangement provides that the spring element is formed by two helical springs aligned parallel to one another. A correspondingly strong closing force can thereby be brought about and, in addition, special security is ensured if one element of the spring element would fail.
  • a further embodiment variant provides that an elongated hole formed at the freely outwardly projecting end of the mounting element is provided as a means for attaching a hand tool.
  • the insertion opening of the fixed gripper has a base section which is semi-circular in cross-section and adapted to the diameter of a holding bolt subsequent, possibly kinked insertion surfaces is formed.
  • a special design in the area of influence of the displaceable gripper is proposed, which is characterized in that, opposite the insertion opening on the fixed gripper, a stop running at an acute angle to the plane through the central axes of the retaining bolts is formed is, which merges into a circular arc section at the upper end and overlaps the other retaining bolt as a supporting section.
  • the hook-like, freely projecting section of the displaceable gripper has an insertion opening directed towards the stop, which at least approximately has a base section which is semicircular in cross section and insertion surfaces adjoining it on both sides.
  • the movable gripper only has the task of preventing the one holding bolt from pivoting about the axis of the other holding bolt.
  • the holder in the plane of the retaining bolts is caused by the insertion opening on the fixed gripper and by the stop opposite the insertion opening of the fixed gripper.
  • the free end region of the hook-like section lying opposite the insertion opening has a rounded end surface and is thus tapered towards the insertion opening. This creates a significant improvement, especially when coupling between the attachment and the excavator arm.
  • This special design provides a good possibility of pushing the displaceable gripper aside during the assembly process of the add-on part until the corresponding retaining bolt can snap into place and the displaceable gripper can get into its closed position.
  • Figure 1 is a front view of a holding element which is mounted on an excavator arm or on a vehicle.
  • FIG. 2 shows a section along the line II-II in Fig. 1.
  • 3 shows a section along the line III-III in FIG. 1;
  • Fig. 5 is a side view of part of an excavator boom with attached holding element and mounted attachment.
  • a gripper 6 is fixedly connected to the holding element 5 and a gripper 7 is held in a guide 10 of the holding element 5 so that it can be displaced in a straight line.
  • Spring elements 11, which act in the direction of the closed position of gripper 7, are assigned to gripper 7, which can be displaced in a straight line.
  • On the fixed gripper 6, an imaginary plane in the direction of a plane through the axes of the holding bolts 3 and 4 has an insertion opening and, with the spacing matched to the spacing A of the holding bolts 3 and 4, there is an at least approximately perpendicular to the imaginary plane stop 12 on the holding element 5 as Insertion part for the second retaining bolt 4 is provided.
  • the displaceable gripper 7 has a hook-like, freely projecting section 13 for at least partially encompassing the second holding bolt 4 in the area opposite the stop 12.
  • the displaceable gripper 7 is designed as an essentially T-shaped component, one part 14 engaging in the guides 10 of the holding element 5 and the other other part is designed as an approximately cantilevered, hook-like section 13.
  • a mounting element 15 is fixedly connected to the displaceable gripper 7 and has means 16 for fastening one end of the spring element 11.
  • the displaceable gripper 7 and the mounting element 15 are expediently screwed together.
  • the spring element 11 is advantageously mounted or mounted on the one hand on the mounting element 15 and on the other hand on a fixed part 17 of the holding element 5.
  • the mounting element 15 has a freely projecting flange 18 which covers the spring element 11 in the closed position of the displaceable gripper 7 towards the attachment 1. 2 shows a position in which the retaining bolts 3 and 4 do not yet engage in the retaining element 5. Therefore, the flange 18 abuts directly against the fixed part 17 with its free end 19.
  • an opening 20 remains between the stop 12 and the insertion opening 9 on the hook-like section 13 of the displaceable gripper 7, which overall is smaller than the diameter of a retaining bolt 4, so that when the retaining bolt 4 is inserted there is a permanent positive and non-positive connection ,
  • the flange 18 does not yet abut the fixed part 17 with its free end 19.
  • An imaginary distance B thus remains between the center point of the semicircular insertion opening 9 and the center point (central axis) of the retaining bolt 4 when the retaining bolt 4 is not inserted.
  • the spring element 11 is advantageously formed by at least one coil spring 21, 22.
  • the spring element 11 is expediently formed by two helical springs 21, 22 aligned parallel to one another.
  • other designs of spring elements 11 are also conceivable within the scope of the invention.
  • any elastic, stretchable and retractable components that can withstand tensile loads could be used.
  • Such spring elements or combinations of different types of spring elements can also be used and thus form a mechanically flawlessly effective arrangement for quickly changing attachments.
  • means for attaching a hand tool are on the displaceable gripper 7 and / or on the mounting element 15 connected to it Rod provided for the displacement of the gripper 7.
  • a tab 32 bent at the free, outwardly projecting end of the mounting element 15 is provided as a means for attaching a hand tool.
  • the insertion opening 8 of the fixed gripper 6 is of a base section 24 which is semicircular in cross-section and which adjoins the diameter of a retaining bolt 3, and adjoining, if necessary, bent-in insertion surfaces 25 and 26 formed.
  • the insertion opening 8 of the fixed gripper 6 is of a base section 24 which is semicircular in cross-section and which adjoins the diameter of a retaining bolt 3, and adjoining, if necessary, bent-in insertion surfaces 25 and 26 formed.
  • the hook-like, freely projecting section 13 of the displaceable gripper 7 has an insertion opening 9 directed towards the stop 12, which at least approximately has a base section 28 which is semicircular in cross section and insertion surfaces 29 and 30 adjoining it on both sides. That of the insertion opening
  • the section 13 and thus also the displaceable gripper 78 can be pushed back into the open position when pressed with a retaining bolt 4 until the retaining bolt 4 is in its correct position in the system against the stop 12 and at the height of the insertion opening 9. Then the displaceable gripper 7 can also be pulled back into its closed position by the spring element.

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)
  • Working Measures On Existing Buildindgs (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

L'invention concerne un dispositif de fixation interchangeable d'un outil (1), par ex. d'un godet d'excavatrice, sur le bras (2) d'une excavatrice. Ledit outil (1) comporte deux boulons de fixation (3, 4) disposés parallèlement à distance l'un de l'autre, pouvant être saisis par des éléments de préhension (6, 7) disposés sur un élément de fixation (5) sur le bras (2), pouvant être réglés l'un par rapport à l'autre. Les éléments de préhension (6, 7) comportent des ouvertures d'introduction (8, 9) au moins partiellement ouvertes, destinées aux boulons de fixation (3, 4). Un élément de préhension (6) est relié fixement à l'élément de fixation (5), et l'autre élément de préhension (7) est logé de manière à coulisser linéairement dans un guide de l'élément de fixation (5), des éléments élastiques (11) agissant dans le sens de fermeture de l'élément de préhension (7) coulissant linéairement étant affectés à ce dernier. L'élément de préhension fixe (6) comporte une ouverture d'introduction (8) ouverte, dirigée vers un plan formé par les axes de boulons de fixation (3, 4), et une butée (12) essentiellement perpendiculaire par rapport audit plan, située à une distance correspondant à la distance (A) entre les boulons de fixation (3, 4), est prévue sur l'élément de fixation (5) en tant que pièce d'introduction du deuxième boulon de fixation (4). L'élément de préhension coulissant (7) présente une section en forme de crochet (13) destinée à saisir au moins partiellement le deuxième boulon de fixation (4).
EP04741287A 2003-08-04 2004-07-27 Dispositif de fixation interchangeable d'un outil, par ex, d'un godet d'excavatrice, sur le bras d'une excavatrice ou un vehicule Withdrawn EP1651818A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10335667A DE10335667B3 (de) 2003-08-04 2003-08-04 Anordnung zum auswechselbaren Befestigen eines Anbauteiles, z. B. einer Baggerschaufel, an einem Baggerausleger oder einem Fahrzeug
PCT/EP2004/008398 WO2005017267A1 (fr) 2003-08-04 2004-07-27 Dispositif de fixation interchangeable d'un outil, par ex, d'un godet d'excavatrice, sur le bras d'une excavatrice ou un vehicule

Publications (1)

Publication Number Publication Date
EP1651818A1 true EP1651818A1 (fr) 2006-05-03

Family

ID=32186022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04741287A Withdrawn EP1651818A1 (fr) 2003-08-04 2004-07-27 Dispositif de fixation interchangeable d'un outil, par ex, d'un godet d'excavatrice, sur le bras d'une excavatrice ou un vehicule

Country Status (6)

Country Link
US (1) US20060191169A1 (fr)
EP (1) EP1651818A1 (fr)
CA (1) CA2534335A1 (fr)
DE (1) DE10335667B3 (fr)
HR (1) HRP20060048A2 (fr)
WO (1) WO2005017267A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005056505B3 (de) * 2005-11-28 2007-02-08 Robert Riedlberger Zentriervorrichtung für Schnellwechselvorrichtungen
EP2038485B1 (fr) 2006-06-27 2012-05-30 Oscar Meier AG Dispositif d'accouplement et engin de terrassement comportant un tel dispositif d'accouplement
CH699404A1 (de) * 2008-08-25 2010-02-26 Josef Martin Gmbh & Co Kg Energieträgerkupplung, sowie Kupplung mit Energieträgerkupplung.
FR2946061B1 (fr) * 2009-05-29 2011-06-17 Klac Industrie Dispositif de securite pour attache rapide destinee a fixer un outil a l'extremite du bras d'une pelle hydraulique ou analogue.
US20140212210A1 (en) * 2013-01-25 2014-07-31 Caterpillar Inc. Tool coupler having a modular frame construction
CN107615944A (zh) * 2017-09-18 2018-01-23 安徽秋歌农业开发有限公司 一种栽种用的刨土车

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Also Published As

Publication number Publication date
US20060191169A1 (en) 2006-08-31
WO2005017267A1 (fr) 2005-02-24
HRP20060048A2 (en) 2006-03-31
CA2534335A1 (fr) 2005-02-24
DE10335667B3 (de) 2004-05-27

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