EP0672796A1 - Schnellwechselvorrichtung für Erdbewegungsmaschine und dgl. - Google Patents

Schnellwechselvorrichtung für Erdbewegungsmaschine und dgl. Download PDF

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Publication number
EP0672796A1
EP0672796A1 EP95420064A EP95420064A EP0672796A1 EP 0672796 A1 EP0672796 A1 EP 0672796A1 EP 95420064 A EP95420064 A EP 95420064A EP 95420064 A EP95420064 A EP 95420064A EP 0672796 A1 EP0672796 A1 EP 0672796A1
Authority
EP
European Patent Office
Prior art keywords
tool
tool holder
axis
revolution
plate
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.)
Granted
Application number
EP95420064A
Other languages
English (en)
French (fr)
Other versions
EP0672796B1 (de
Inventor
Victor Yeou
Henri Marchetta
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.)
Volvo Compact Equipment SAS
Original Assignee
GROUPE PEL-JOB
Groupe Pel Job
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 GROUPE PEL-JOB, Groupe Pel Job filed Critical GROUPE PEL-JOB
Publication of EP0672796A1 publication Critical patent/EP0672796A1/de
Application granted granted Critical
Publication of EP0672796B1 publication Critical patent/EP0672796B1/de
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
    • E02F3/3613—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
    • E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges
    • 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
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Definitions

  • the invention relates to the technical field related to earthmoving and other machines. More specifically, it relates to a device making it possible to ensure the automatic setting of the tool carried by this type of machine.
  • a device for rapid automatic tool taking for handling and earth-moving machinery comprising a tool holder disposed at the end of the work equipment, and in which the assembly of the tool holder of the tool is carried out by means of several sets of pins and corresponding housings, carried respectively by the tool and the tool holder, the axes of the different sets of pins and housings being parallel to each other.
  • the assembly also comprises a locking member, constituted by a lever mounted on the tool holder and, subjected to the action of a spring intended to press said lever against a stop provided for this purpose on the tool, and therefore, to prevent the removal of the tool holder from the tool.
  • the object of the invention is to overcome this drawback. It offers an automatic tool gripping device for earth-moving machinery, canceling this play, which is prohibitive in the long run for this application by structurally creating a partial clearance when the tool holder is in place on the tool, not affecting not the attachment of the tool to the tool holder.
  • This device for automatic tool gripping for earth-moving machinery or the like comprises a tool holder disposed at the end of the machine's working equipment, and in which the assembly of the tool and the tool holder is made by means of two sets of male and female fastening members having a symmetry of revolution, the respective axes of cooperation with each other are parallel from one set to another, said tool holder also comprising a locking member, intended to cooperate with the tool in order to reversibly lock the attachment of the tool to the tool holder.
  • the locking member consists of a rigid plate, articulated on the tool-carrying member along an axis of articulation perpendicular to the axis of revolution of the securing members, said axis receiving a spring. torsion inducing the lowering of the plate against the tool and its cooperation with a locking stop integral with said tool.
  • the constituent plate of the locking member is held by lateral flanges articulated on said articulation axis, the end of said plate describing an arc of a circle centered on the articulation axis of said locking member, and cooperating by friction against the locking stop at a cylindrical surface, the axis of revolution of which is parallel to the axis of articulation of said locking member but off-center with respect thereto, the radius of curvature of said cylindrical wall being shorter than the radius of curvature of the arc of a circle described by the end of the plate.
  • the plate extends parallel to one of the radial directions emerging from the axis of articulation of the locking member, and ends in a cylindrical contact surface whose axis of revolution coincides with the axis of revolution of the cylindrical surface of the locking stop.
  • the end of said plate consists in fact of two concurrent inclined faces, symmetrical with respect to a center line at said end, the line of intersection of said sides being slightly rounded .
  • said cylindrical surface of the locking stop extends at the upper level by a recess, capable of cooperating with the end of the plate, in particular in the event of imperfect placing in the tool on the tool holder.
  • the male members constituting the joining members are of dimensions smaller than those of the female members with which they cooperate at the level of their zone of cooperation with the latter, and in that, when the tool East secured to the tool holder, the axes of revolution of the male members of the same set are parallel but offset from the axes of revolution of the female members of the corresponding set with which they cooperate, the distance separating each of the planes containing the axes of revolution from the same set of male organs being greater than that separating each of the planes containing the axes of revolution of the same set of female organs.
  • the tool holder includes bearing zones on the tool promoting the maintenance of the partial clearance of the reversible fastening members.
  • the male members consist of tapered studs, respectively a set of two studs integral with the upstream part of the tool holder, and a set of two studs with an axis of revolution parallel to the axis of revolution of the first two studs, integral with the rear zone of the tool and directed in the other direction, the female members being formed by housings of a shape adapted to the shape of the pins, and respectively carried on the front zone of the tool and the rear zone of the toolbox.
  • the diameter of the studs at their level of cooperation with the corresponding housings is less than the diameter of said housings at this level.
  • Figure 1 is a schematic representation in longitudinal section of a bucket, constituting a working tool capable of being mounted on an earthmoving machine.
  • Figure 2 is a top view of the securing face of the bucket to the tool holder extending the working equipment of said machine.
  • Figure 3 is a schematic representation in longitudinal section of the tool holder of said machine, of which Figure 4 is a cross-sectional view.
  • Figure 5 is a schematic representation in longitudinal section embodying the attachment of the tool holder on the bucket.
  • Figure 6 is a schematic detail representation of the locking member secured to the tool holder.
  • FIG. 1 shows a bucket (1) intended to adapt to the end of the working equipment of an earthmoving machine, and in particular of what is commonly known as a backhoe.
  • This cup of known shape, advantageously comprises, at its front working surface, teeth (2) attached by any means.
  • the bucket (1) is reversibly fixed to the working equipment of said backhoe loader, at the level of the face substantially opposite to the anterior working face, the face called in the following description the joining face (3).
  • housings (6) symmetrically distributed with respect to the plane of symmetry P of the bucket (1), and positioned substantially perpendicular to the bottom of the bucket.
  • These housings (6) are biconical in shape, namely a first truncated cone (6a) relatively flared but of low height, extended by a second truncated cone (6b), narrower, but with the same axis of revolution, these two truncated cones joining at a joining area (11).
  • the diameter of the junction zone (11) of the two truncated cones is 37 mm.
  • the joining face (3) comprises at its other end, two male members, constituted by pins (4), also symmetrically distributed with respect to the plane P of symmetry of the bucket.
  • These pins (4) are also of substantially conical shape, and are extended by a base (5), the cones (4) and the base (5) having the same axis of revolution (8).
  • the pins (4) are located in a plane parallel but offset from the plane containing the housings (6).
  • the upper securing face (3) of the bucket also includes a locking stop (7), described in more detail later in connection with FIG. 6.
  • the effective attachment zone of the bucket on the tool holder is further delimited by two lateral flanges (10), reported in particular by welding on said upper face (3) of the bucket, and allowing, as will be described later , to facilitate the automatic grip of the tool by the tool holder.
  • This tool holder (20) firstly comprises, at one of its ends, male organs, constituted by studs (14) of generally conical shape extending a base (15), the studs (14) and the base (15) having a symmetry of revolution along the same axis of revolution (18).
  • the diameter of the cylindrical base (15) is close to 35 millimeters.
  • the base is itself fixed on a support (26) whose function will appear more clearly later.
  • the tool holder (20) has a recess in the vicinity of its other end at the level of which are housed housings (16) formed, like the housings (6) of the bucket (1) by two truncated cones of the same axis. of revolution (19), a first truncated cone (16a) of low height but more flared, joining in (17) a second truncated cone (16b), said housings (16) and the pins (14) being symmetrically distributed by relative to the plane of symmetry P ' of the tool holder (20).
  • the diameter of the junction zone (17) of the two truncated cones constituting each of the housings is close to 37 millimeters.
  • the housings (16) and the pins (14) are located in two parallel but separate planes.
  • the tool holder (20) further comprises a locking member (21), articulated between the faces (25) of the tool holder, the articulation axis (37) being perpendicular to the plane of symmetry P 'of the holder. tool, and located in the vicinity of the pins (14).
  • this locking member (21) firstly comprises a hinge core (32), received in through housings (31) formed for this purpose in the flanges (25) of the tool holder.
  • This core (32) receives two parallel flanges (27) formed between the flanges (25) and adjacent thereto, these flanges (27) being substantially directed towards the other end of the tool holder. Between these flanges (27) is mounted a metal plate (28), described in more detail in connection with FIG. 6. This plate (28) is intended to cooperate with the locking stop (7) positioned on the upper securing face (3) of the bucket (1).
  • the core (32) also receives a torsion spring (24), the two free ends (30) of which rest on the top of the flanges (27), and the central zone of which is fixed around a pivot point (22 ) by means of a bracket (23) secured to the support (26) for a screw (29).
  • the spring (24) surrounds the core (32) and exerts, through the ends (30) a torsional torque inducing the rotation of the flanges (27), and starting from the plate (28) clockwise in Figure 3.
  • the axes of revolution (8, 9, 18, 19) respectively nipples (4) and (14) on the one hand, and housings (6), (16) on the other hand, are not confused but remain parallel and are offset d 'a distance of about 1 millimeter, the axes respectively (8) and (18) of the pins being eccentric of the axes (9) and (19) of the housings relative to a median parallel plane situated between these axes.
  • the locking member (21) makes it possible to achieve automatic backlash, in particular of backlash in the longitudinal direction.
  • the plate (28) extends parallel to one of the radial directions emanating from the articulation axis (37). In other words, the median plane of said plate (28) does not join said axis (37).
  • the locking stop (7) has a cooperation surface (40) with a cylindrical profile, the axis of revolution (43) of which is eccentric relative to the axis of revolution (37) and in particular situated in a plane. superior.
  • the radius of curvature R2 of this cylindrical surface (40) is shorter than the radius of curvature R1 of the circular portion of movement of the end (45) of the plate (28).
  • the end (45) of the plate (28) also has a cylindrical profile with the same characteristic as the cylindrical cooperation surface (40) of the stop (7), in other words, centered on the hinge pin (43).
  • the end (45) simply consists of a dihedral slightly rounded at the junction plane of the two constituent planes of the dihedron.
  • the upper zone of the cooperation surface (40) of the stop (7) has a recess (41) defining a stop (42).
  • This stop (42) is intended to cooperate with the end (45) of the plate (28) when the tool holder has been badly secured to the bucket, or to the tool in general.
  • this abutment cooperation (42) - end (45) of the plate (28) annihilates any risk of the tool falling out of the tool holder, even if the functioning of the tool is then not satisfactory.
  • the noise generated by the game which can not be overcome in this case, quickly awakens the attention of the operator of the machine, who can then proceed to a new correct connection this time of the tool on the tool holder.
  • the tool is detached from the tool holder either manually by means of a lever (35), or hydraulically by means of members (not shown), typically constituted by a piston-actuator pair.
  • the automatic gripping device thus described allows a drastic reduction in the clearances, in particular longitudinal clearances, by increasing the contact surfaces, this reduction in the clearance resulting in a reduction in the wear of the parts also conferring more security on the handling of these devices.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)
  • Manipulator (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
EP95420064A 1994-03-16 1995-03-13 Schnellwechselvorrichtung für Erdbewegungsmaschine und dgl. Expired - Lifetime EP0672796B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9403308 1994-03-16
FR9403308A FR2717516B1 (fr) 1994-03-16 1994-03-16 Dispositif pour permettre la prise automatique d'outils, notamment pour engins de terrassement ou analogue.

Publications (2)

Publication Number Publication Date
EP0672796A1 true EP0672796A1 (de) 1995-09-20
EP0672796B1 EP0672796B1 (de) 1999-07-07

Family

ID=9461274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95420064A Expired - Lifetime EP0672796B1 (de) 1994-03-16 1995-03-13 Schnellwechselvorrichtung für Erdbewegungsmaschine und dgl.

Country Status (4)

Country Link
EP (1) EP0672796B1 (de)
AT (1) ATE181978T1 (de)
DE (1) DE69510581T2 (de)
FR (1) FR2717516B1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637649A2 (de) * 1993-08-06 1995-02-08 Groupe Pel-Job Automatische Werkzeugkupplungsvorrichtung für Erdbewegungsmaschinen oder dgl.
EP0810330A1 (de) * 1996-05-30 1997-12-03 Societe A Responsabilite Limitee : Morin Freres Vorrichtung zum Befestigen eines Werkzeugs am Ende eines Armes eines Schaufelbaggers
EP0864697A1 (de) * 1997-03-10 1998-09-16 Clark Equipment Company Befestigungsvorrichtung für ein Erdbearbeitungsgerät
WO1998040569A1 (en) * 1997-03-10 1998-09-17 Clark Equipment Company Frame for mounting on a boom mounted quick change bracket
US5983535A (en) * 1997-03-10 1999-11-16 Clark Equipment Company Fastener secured frame for boom mounted quick change bracket
WO2001096672A1 (en) * 2000-06-12 2001-12-20 Clark Equipment Company Latch bar construction for a quick change bracket
EP1167634A3 (de) * 2000-06-16 2002-05-22 Deere & Company Anbaurahmen für Vorsatzgeräte einer Arbeitsmaschine und zugehöriger Aufnahmebolzen
FR2872231A1 (fr) * 2004-06-24 2005-12-30 Jean Pierre Dorguin Dispositif de solidarisation de deux pieces mecaniques

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475160A1 (fr) * 1980-01-31 1981-08-07 Pingon Pierre De Dispositif formant prise d'outils automatique pour excavateur, chargeur, machine de terrassement ou autres
EP0472115A1 (de) * 1990-08-18 1992-02-26 Ahlmann-Maschinenbau GmbH Schnellwechselvorrichtung
FR2690718A1 (fr) * 1992-05-04 1993-11-05 Groupe Pel Job Dispositif de sécurité pour prise automatique d'outils, en particulier pour machines de terrassement ou analogue.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475160A1 (fr) * 1980-01-31 1981-08-07 Pingon Pierre De Dispositif formant prise d'outils automatique pour excavateur, chargeur, machine de terrassement ou autres
EP0472115A1 (de) * 1990-08-18 1992-02-26 Ahlmann-Maschinenbau GmbH Schnellwechselvorrichtung
FR2690718A1 (fr) * 1992-05-04 1993-11-05 Groupe Pel Job Dispositif de sécurité pour prise automatique d'outils, en particulier pour machines de terrassement ou analogue.

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637649A2 (de) * 1993-08-06 1995-02-08 Groupe Pel-Job Automatische Werkzeugkupplungsvorrichtung für Erdbewegungsmaschinen oder dgl.
EP0637649A3 (de) * 1993-08-06 1996-01-03 Groupe Pel Job Automatische Werkzeugkupplungsvorrichtung für Erdbewegungsmaschinen oder dgl.
EP0810330A1 (de) * 1996-05-30 1997-12-03 Societe A Responsabilite Limitee : Morin Freres Vorrichtung zum Befestigen eines Werkzeugs am Ende eines Armes eines Schaufelbaggers
FR2749332A1 (fr) * 1996-05-30 1997-12-05 Morin Freres Dispositif pour fixer un outil a l'extremite du bras d'une pelle mecanique
EP0864697A1 (de) * 1997-03-10 1998-09-16 Clark Equipment Company Befestigungsvorrichtung für ein Erdbearbeitungsgerät
WO1998040569A1 (en) * 1997-03-10 1998-09-17 Clark Equipment Company Frame for mounting on a boom mounted quick change bracket
US5974706A (en) * 1997-03-10 1999-11-02 Clark Equipment Company Attachment construction for earthworking implement
US5983535A (en) * 1997-03-10 1999-11-16 Clark Equipment Company Fastener secured frame for boom mounted quick change bracket
US6154989A (en) * 1997-03-10 2000-12-05 Clark Equipment Company Attachment construction for earthworking implement
US6163989A (en) * 1997-03-10 2000-12-26 Clark Equipment Company Frame for mounting on a boom mounted quick change bracket
WO2001096672A1 (en) * 2000-06-12 2001-12-20 Clark Equipment Company Latch bar construction for a quick change bracket
EP1167634A3 (de) * 2000-06-16 2002-05-22 Deere & Company Anbaurahmen für Vorsatzgeräte einer Arbeitsmaschine und zugehöriger Aufnahmebolzen
FR2872231A1 (fr) * 2004-06-24 2005-12-30 Jean Pierre Dorguin Dispositif de solidarisation de deux pieces mecaniques

Also Published As

Publication number Publication date
EP0672796B1 (de) 1999-07-07
DE69510581D1 (de) 1999-08-12
FR2717516A1 (fr) 1995-09-22
FR2717516B1 (fr) 1996-05-03
ATE181978T1 (de) 1999-07-15
DE69510581T2 (de) 1999-11-18

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