WO1995018894A1 - Systeme de serrage rapide pour pelles mecaniques - Google Patents

Systeme de serrage rapide pour pelles mecaniques Download PDF

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Publication number
WO1995018894A1
WO1995018894A1 PCT/CH1995/000002 CH9500002W WO9518894A1 WO 1995018894 A1 WO1995018894 A1 WO 1995018894A1 CH 9500002 W CH9500002 W CH 9500002W WO 9518894 A1 WO9518894 A1 WO 9518894A1
Authority
WO
WIPO (PCT)
Prior art keywords
quick
change system
fastening
base plate
cavity
Prior art date
Application number
PCT/CH1995/000002
Other languages
German (de)
English (en)
Inventor
Pierre Le Grand
Original Assignee
Pierre Le Grand
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 Pierre Le Grand filed Critical Pierre Le Grand
Publication of WO1995018894A1 publication Critical patent/WO1995018894A1/fr

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
    • E02F3/3613—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
    • E02F3/3668—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where engagement is effected by a mechanical lever or handle
    • 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
    • E02F3/3672—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle

Definitions

  • the invention relates to a quick-change system for bucket excavators.
  • Different tools can be attached to the arm of a backhoe.
  • the interchangeability of the tools makes it possible to carry out a wide variety of work with the same backhoe.
  • Well-known tools are, for example, trench clearing bucket, backhoe bucket, stone laying spoon, mining hammer or asphalt cutter.
  • the connecting device with which the tools are attached to the front end of the excavator arm is normally designed as a bolt fastening.
  • Such bolt fastenings are very impractical.
  • the tools can only be changed with considerable effort by one person.
  • quick-change couplings which are mounted on the front end of an excavator arm. The tools can then be easily attached to the assembled quick-change coupling and released again.
  • Such quick-change couplings usually consist of two parts that can be coupled together, one part being attached to the tool and the other part to the excavator arm.
  • the known quick-change couplings are unsuitable for mini excavators with an operating weight of less than seven tons.
  • Mini excavators have less power than excavators of normal size.
  • it is important that the weight of a quick-change coupling is as low as possible and that its construction is as low as possible.
  • the length of the excavator arm is namely enlarged by the quick-change coupling, and thereby the break-out force on the tool is reduced because of the longer lever arm.
  • Quick-change couplings with a relatively low overall height are known.
  • these quick-change couplings have the disadvantage that they are mounted on bolts that are firmly anchored in the excavator bucket, which results in an extension of the excavator arm. This leads to a reduction in the force on the blade edge.
  • the present invention is based on the object of finding a quick-change system for backhoe excavators which is suitable for mini-excavators and in which the play is equalized in a simple manner.
  • the proposed quick-change system comprises a lower part on the tool side and an upper part on the excavator arm side, which can be coupled to one another via a hook-and-eye connection and a special snap lock.
  • the lower part is integrated directly into the top of the tool, as a result of which a very low overall height can be achieved.
  • a slightly elastic plastic plate is arranged on the top of the lower part, on which the upper part rests in the coupled state.
  • the upper part can be attached to the excavator arm with two connecting bolts.
  • Fig. 7 top seen from the front
  • the lower part 1 of the proposed quick-change system consists of a rectangular support plate 2, which has two rectangular recesses 3 on its front narrow side and a wide, frame-shaped fastening bracket 4 near its rear narrow side (cf. FIG. 1).
  • the support plate 2 is attached to the top of the tool (preferably welded on). It can be inserted directly into the top of the tool, so that no additional height is claimed (cf. FIG. 3).
  • the upper part 7 of the proposed quick-change system consists of a rectangular, hollow base plate 9 (cf. FIG. 8), on the upper side 17 of which two bolt plates 10 protruding at right angles and on the underside of which two hooks 6 also protruding at right angles (cf. Fig. 4).
  • the width of the support plate 2 of the lower part 1 corresponds to the width of the base plate 9 of the upper part 7.
  • the length of the support plate 2 is approximately greater by the thickness of the fastening bracket 4 than the length of the upper part base plate 9.
  • the recesses 3 on the support plate 2 of the lower part 1 are Arranged symmetrically to the longitudinal axis 5 of the support plate 2, and their longitudinal sides run parallel to this longitudinal axis 5. They are part of the hook-and-eye connection, which serves to couple the upper part 7 to the lower part 1.
  • the distance between the two recesses 3 corresponds to the distance between the two hooks 6 of the upper part 7.
  • the width and the length of the recesses 3 are somewhat larger than the width or the length of the hooks 6. The hooks 6 can consequently be inserted into the recesses 3 .
  • the recesses 3 are closed off at the front with a cross bar 8, which extends over the entire width of the support plate 2.
  • the cross bar 8 runs along the front shell side of the support plate 2. It serves to hang the hooks 6.
  • the cutouts 3 with the crossbar 8 form the eyelets of the hook-eyelet connection with which the upper part 7 is coupled to the lower part 1.
  • the frame-shaped fastening bracket 4 is a part of the snap lock, which also serves to couple the top part 7. It runs along the rear narrow side of the support plate 2.
  • the fastening bracket 4 is rectangular. It consists of two long, straight longitudinal webs, which are connected at both ends with a straight, short transverse web. These transverse webs run at right angles to the longitudinal webs.
  • the mounting bracket 4 is attached to the support plate 2 with one of the two longitudinal webs (cf. FIGS. 2 and 3). It runs at right angles to the support plate 2 or is slightly inclined to the rear.
  • the mounting bracket 4 is very low. Its height is only slightly greater than the thickness of the base plate 9 of the upper part 7.
  • the rectangular hole 14 of the fastening bracket 4 is provided for receiving the front section of a fastening wedge 11 which is displaceably fastened on the upper part 7.
  • the problem of play compensation is solved in the proposed quick-change system with a slightly elastic plastic or rubber plate 12 which is arranged on the upper side of the support plate 2 (cf. FIGS. 1 and 3).
  • the plastic or rubber plate 12 is located between the rectangular cutouts 3. It extends over approximately 80% of the length of the support plate.
  • the support plate 2 is provided on its upper side with a rectangular, flat receiving frame in which the plastic or rubber plate 12 is inserted.
  • the height of the receiving frame is chosen to be smaller than the thickness of the plastic or rubber plate 12, so that it projects above the frame.
  • the upper part 7 with its base plate 9 rests on the plastic or rubber plate 12.
  • the thickness of the plastic or rubber plate 12 is chosen such that it is pressed together by the upper part base plate 9 lying on it.
  • the upper part 7 is coupled to the lower part 1 with a hook-and-eye connection, which has already been described, and a special snap lock.
  • a bolt connection is used to fasten the upper part 7 to the front end of the excavator arm.
  • the hooks 6 of the hook-and-eye connection are arranged on the front edge 20 of the base plate underside of the upper part 7. They are divided into a square neck section 21 and a curved head section 22 (cf. FIG. 4). While the front sides of the neck sections 21 are flush with the front narrow side 23 of the base plate 9, the head sections 22 protrude beyond the front narrow side 23.
  • the base plate 9 has a cuboid cavity 13, in which a spring-loaded, plate-shaped fastening wedge 11 and a pivotable unlocking cam 29, with which the fastening wedge 11 can be displaced against the spring pressure, are accommodated (see FIGS. 4 and 6).
  • the cavity 13 is twice the hook thickness, narrower than the base plate width.
  • the fastening wedge 11 can be divided into a rear, rectangular section 25 and a front, L-shaped section 26.
  • the width and the height of the rectangular section 25 correspond to the width and the height of the cavity 13. Its length corresponds to approximately half the length of the cavity 13.
  • the L-shaped section 26 is further subdivided into a longitudinal leg 27 and a transverse leg 28.
  • the longitudinal leg 27 adjoins the rectangular section 25. Its longitudinal axis lies on the longitudinal axis of the rectangular section 25.
  • the longitudinal leg 27 is very narrow, so that next to it on one side the already mentioned pivotable unlocking cam 29 and on the other side a spring package can find 30 place. Its width corresponds approximately to half the width of the hooks 6 and ⁇ its length to half the length of the cavity 13.
  • the unlocking cam 29 is arranged in that area of the cavity 13 which lies between the transverse leg 28 of the L-shaped section 26 and the front narrow side 31 of the rectangular section 25. It is pivotally attached in the horizontal.
  • a pin 32 serves as the pivot axis. This pin 32 is inserted into a bore 33 which extends from the upper side 17 to the lower side of the base plate 9 and extends at right angles to the latter.
  • the unlocking cam 29 has an annular extension at one end, through the central opening of which the bolt 32 penetrates (cf. FIG. 5).
  • the annular enlargement is provided with a threaded bore which runs at right angles to the longitudinal axis of the unlocking cam 29 and into which a screw 34 can be screwed to fix the unlocking cam 29 on the bolt 32.
  • the bolt 32 can additionally have a recess into which the front area of the fixing screw 34 can penetrate.
  • the bolt 32 is provided with a head on its upper side, the diameter of which is larger than the diameter of the bore 33. On the one hand, this head prevents the bolt 32 from sliding downwards out of the bore 33 and, on the other hand, serves to secure the lever , with which the bolt 32 can be rotated about its longitudinal axis. The rotation of the bolt 32 causes the unlocking cam 29 to pivot.
  • the back of the cross leg 28 is S-shaped, namely the outer area is concave and the inner area is convex.
  • the inner area merges smoothly into one of the narrow sides of the longitudinal leg 27.
  • the edge which is formed at the transition of the longitudinal leg 27 into the rectangular section 25 of the fastening wedge 11 is also rounded. This creates one edgeless surface, which extends from the one front edge of the rectangular section 25 to the narrow side of the transverse leg 28 (cf. FIG. 5).
  • the unlocking cam 29 When the unlocking cam 29 is pivoted by the actuation of the lever, its rounded front end surface slides along this edgeless surface. If the unlocking cam 29 is turned forward in the direction of the hooks 6, it pushes the fastening wedge 11 forward against the spring force. In the drawing 6 the unlocking cam 29 is shown in three different positions.
  • the spring force on the fastening wedge 11 is exerted by a spring assembly 30, which preferably consists of two counter-rotating, interlocking and coaxial spiral springs.
  • the spiral springs of the spring assembly 30 must be in opposite directions so that they cannot wedge into one another. A coil spring alone would not be strong enough.
  • a spring assembly 30 from at least two springs is safer, since in the event that one spring breaks, a second spring is still present.
  • the spring assembly 30 is located next to the L-shaped section 26 of the fastening wedge 11 on the side opposite the unlocking cam 29. It is arranged between the front narrow side 23 of the base plate 9 and the front narrow side 31 of the rectangular fastening wedge sections 25 and runs parallel to the lateral narrow side of the L-shaped fastening wedge sections 26.
  • the front narrow side 23 of the base plate 9 has two round threaded bores 35, which are arranged symmetrically to the longitudinal axis of the base plate 9. They allow access to the cavity 13. These threaded bores 35 are each closed with an Allen screw 36. One of these threaded bores 35 opens into the area of the cavity 13 in which the unlocking cam 29 is arranged. The other threaded bore 35 opens into those submit the cavity 13 in which the spring assembly 30 is located.
  • the spring assembly 30 has a front end face on the inside of the corresponding socket screw 36.
  • the rear face of the cavity 13 is open. If the spring assembly 30 is in the relaxed state and the fastening wedge 11 is in the rearmost position, then the rearmost region of the fastening wedge 11 projects out of the cavity 13.
  • the fastening wedge 11 is tapered in a wedge shape on its rear narrow side 37, both the upper and the lower longitudinal edge being chamfered. So that the fastening wedge 11 cannot slide completely out of the cavity 13, it is provided on its upper side in the middle of the rectangular section 25 with a locking pin protruding at right angles, which protrudes into a recess on the upper side of the cavity 13 (see FIG. 6). The fastening wedge 11 can only be moved out of the cavity 13 until the locking pin is in contact with the rear edge of the recess.
  • each bolt plate 10 extends along a longitudinal edge of the base plate top side 17.
  • the bolt plates 10 are at right angles on the top side 17 of the base plate 9.
  • Their outer surfaces 16 are offset inwards with respect to the narrow sides 24 of the base plate 9.
  • the bolt plates 10 can be considerably longer than the base plate 9.
  • the design and dimensioning of the pin plates 10 depend on the original connection dimensions of the individual excavator types. There are major differences in these dimensions.
  • the rear bolt plate ends are flush with the rear narrow side of the base plate 9.
  • the front bolt plate sections protrude beyond the front narrow side 23 of the base plate 9.
  • the upper bolt plate narrow sides run parallel to the base plate upper side 17.
  • Both the rear bolt plate narrow sides and also the lower section of the front bolt plate narrow sides run obliquely to the front.
  • the upper section of the narrow front plate side is rounded.
  • the two bolt plates 10 each have two circular holes 19. These holes 19 are located in the same places on both pin plates 10, so that the holes 19 of both pin plates 10 are aligned in pairs.
  • a connecting bolt 18 can now be inserted transversely to the base plate 9 in each pair of holes. In the inserted state, the two connecting bolts 18 run parallel to the base plate upper side 17 and to the front and rear base plate narrow sides (cf. FIG. 8).
  • the excavator To move the excavator bucket, the excavator has a hydraulic cylinder which runs along the side of the excavator arm that faces away from the excavator.
  • both the foremost hydraulic cylinder section and the foremost excavator arm section each have a round, continuous transverse bore.
  • the tool is not directly attached to the front of the hydraulic cylinder, but a connecting plate is attached.
  • the connecting plate then has a transverse bore at its foremost section.
  • top part 7 of the quick-change system is to be attached to an excavator arm and the associated hydraulic cylinder or the associated connecting plate, then the foremost excavator arm section and the foremost hydraulic cylinder or connecting plate section are moved between the two pin plates 10.
  • the quick-change system is thus attached like a conventional excavator spoon.
  • the upper part 7 of the quick-change system is, as described above, bolted to the lower end of the excavator arm and the hydraulic cylinder or the connecting plate.
  • the tools which are to be used must be equipped with a lower part 1 on their upper side.
  • the upper part 7 is first positioned with the excavator arm above the lower part 1 so that the hooks 6 lie exactly over the cutouts 3. Then the upper part 7 is moved downwards and forwards in such a way that the hooks 6 embrace the cross bars 8. The tool is then lifted off the ground with the excavator arm.
  • the tool is pressed by its own weight with the lower part 1 of the snow change system against the upper part 7, whereby the quick change system automatically engages.
  • the upper transverse edge of the mounting bracket 4 presses the mounting wedge 11 backwards into the base plate cavity 13.
  • the mounting wedge 11 snaps into the central hole 14 of the mounting bracket 4 as soon as it is at its height.
  • the tool is now ready for work.
  • the excavator operator can carry out all operations for fastening a tool from his driver's cab. He only had to leave the driver's cab if he wanted to detach a tool from the excavator arm.
  • the lever arm In order to release a tool, the lever arm is turned by hand in a counterclockwise direction, as a result of which the fastening wedge 11 is pushed forward and pulled out of the hole 14 in the fastening bracket 4.
  • the Fixing wedge 11 penetrates further into the fixing bracket 4, the greater the pressure when working, which acts on the elastic plastic or rubber plate 12 and the more it is compressed thereby. As a result, a tight fit of the quick-change system is guaranteed at all times.
  • the fastening wedge 11 In order that the fastening wedge 11 does not disengage due to strong blows, it can additionally be mechanically secured. Such strong blows can occur especially when working with a hydraulic breaker.
  • the mechanical securing preferably consists of an automatically snap-in ball lock pin 38, which is inserted into a bore 39 on one of the lateral narrow sides 25 of the base plate 9 (cf. FIG. 8).
  • the ball locking pin 38 is inserted after the fastening wedge 11 has snapped into the fastening bracket 4. When plugged in, it prevents the fastening wedge 11 from moving backwards, out of the central hole 14 of the fastening bracket 4.
  • the proposed quick-change system is characterized by an extremely low construction. This is achieved on the one hand by integrating the lower part 1 directly into the tool, and on the other hand by not using a cylindrical bolt, as previously, but a flat fastening wedge 11 as the movable element of the snap lock. None of the quick-change couplings known hitherto had such a low construction. The compact design also results in a lower weight. The proposed quick-change system is therefore also easier than the previously known quick-change couplings. The proposed quick-change system is particularly suitable for mini excavators because of the properties described, since thanks to it the force can be optimally used and is not weakened by excessive weight or unnecessary extension of the lever arm.
  • Another particular advantage is that, thanks to the elastic plastic or rubber plate 12, an automatic play compensation between the base plate 9 of the upper part 7 and the support plate 2 of the lower part 1 is achieved. This prevents constant rattling and thus also premature wear. In addition, the tedious and complex readjustment with washers, as was usual with other known quick-change couplings, is no longer necessary.
  • the additional mechanical securing of the quick-change system ensures that the tool is held securely at all times even when working with a hydraulic demolition hammer.
  • the closed construction of the upper part 7, whose cavity 13 is completely closed, is particularly advantageous.
  • This cavity 13 is filled with grease during assembly.
  • the mechanism arranged in the cavity 13 is thus well protected against contamination and consequently remains functional for a long time.
  • Access to the spring package 30 and to the unlocking cam 29 remains guaranteed by the two screw locks 35, 36 on the front narrow side 23 of the base plate 9.
  • the grease present in the cavity 13 is sufficient for the lubrication of the moving parts accommodated in the cavity 13. No other lubrication is necessary.
  • the proposed quick change system can be operated very easily by a single person and without the use of additional tools.
  • the automatic locking when attaching a tool additionally contributes to an operating comfort that has never been achieved before.

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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)

Abstract

Un système de serrage rapide comprend une partie inférieure côté outil et une partie supérieure (7) côté bras de la pelle qui peuvent être couplées l'une à l'autre par une liaison à crochets et à ÷illets et par une fermeture spéciale à encliquetage. La fermeture à encliquetage comprend comme élément mobile une clavette de fixation plate (11) en forme de plaque, sollicitée par un ressort. L'élément mobile est monté sur la partie supérieure (7) du système de serrage rapide et peut s'encliqueter dans un ÷illet de fixation monté sur la partie inférieure. La partie inférieure est directement intégrée dans la partie supérieure de l'outil (par exemple la pelle), ce qui permet d'obtenir une hauteur d'encombrement très réduite. Une compensation automatique du jeu est assurée par une plaque légèrement élastique en matière plastique ou en caoutchouc située sur la face supérieure de la partie inférieure et sur laquelle la partie supérieure (7) s'appuie lorsqu'elle est accouplée à la partie inférieure. La partie supérieure (7) peut être assujettie au bras de la pelle par deux boulons de fixation.
PCT/CH1995/000002 1994-01-11 1995-01-05 Systeme de serrage rapide pour pelles mecaniques WO1995018894A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH73/94-7 1994-01-11
CH7394A CH687775A5 (de) 1994-01-11 1994-01-11 Schnellwechselsystem fuer Loeffelbagger.

Publications (1)

Publication Number Publication Date
WO1995018894A1 true WO1995018894A1 (fr) 1995-07-13

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PCT/CH1995/000002 WO1995018894A1 (fr) 1994-01-11 1995-01-05 Systeme de serrage rapide pour pelles mecaniques

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CH (1) CH687775A5 (fr)
WO (1) WO1995018894A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000037742A1 (fr) * 1998-12-10 2000-06-29 Ove Hammarstrand Agencement d'outil
EP1033447A2 (fr) * 1999-03-02 2000-09-06 Mantovanibenne S.r.l. Dispositif d'accouplement et de désaccouplement rapide d'un outil sur une flêche
AT411075B (de) * 1997-04-14 2003-09-25 Baumaschinentechnik Ges M B H Schnellwechselvorrichtung für bagger
EP1445385A1 (fr) * 2003-02-07 2004-08-11 Cangini Benne S.R.L. Attache rapide pour outil
EP1840276A2 (fr) * 2006-03-27 2007-10-03 Baumaschinentechnik Gesellschaft m.b.H. Attache rapide pour engins de travaux publics
CN102427780A (zh) * 2009-05-20 2012-04-25 爱尔康研究有限公司 加压冲洗挤压条带

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19507896A1 (de) * 1995-03-07 1995-10-26 Frank Von Wolff Schnellwechselvorrichtung
ITBO20070728A1 (it) * 2007-10-30 2009-04-30 Cangini Benne Srl Dispositivo con blocco di sicurezza per connettere un utensile ad un mezzo di azionamento.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2162156A1 (fr) * 1971-12-01 1973-07-13 Verachtert Antonius
FR2631052A1 (fr) * 1988-05-04 1989-11-10 Sacmi Dispositif de prise et de depose automatique d'un outil de travail par le porte-outil d'une machine, notamment de terrassement
AT389906B (de) * 1987-11-23 1990-02-26 Lehnhoff Hartstahl Ges M B H Schnellwechselvorrichtung mit automatischer verriegelung fuer arbeitswerkzeuge an einem baggerausleger
EP0506604A1 (fr) * 1991-01-10 1992-09-30 Metallbau Und Spezialkonstruktionen In Metall, Michael Hand Raccord rapide pour l'attelage temporaire d'outils de travail à une flêche d'un engin de terrassement
GB2259293A (en) * 1992-10-20 1993-03-10 Hugh Robert Edeleanu Excavator bucket coupling system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2162156A1 (fr) * 1971-12-01 1973-07-13 Verachtert Antonius
AT389906B (de) * 1987-11-23 1990-02-26 Lehnhoff Hartstahl Ges M B H Schnellwechselvorrichtung mit automatischer verriegelung fuer arbeitswerkzeuge an einem baggerausleger
FR2631052A1 (fr) * 1988-05-04 1989-11-10 Sacmi Dispositif de prise et de depose automatique d'un outil de travail par le porte-outil d'une machine, notamment de terrassement
EP0506604A1 (fr) * 1991-01-10 1992-09-30 Metallbau Und Spezialkonstruktionen In Metall, Michael Hand Raccord rapide pour l'attelage temporaire d'outils de travail à une flêche d'un engin de terrassement
GB2259293A (en) * 1992-10-20 1993-03-10 Hugh Robert Edeleanu Excavator bucket coupling system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT411075B (de) * 1997-04-14 2003-09-25 Baumaschinentechnik Ges M B H Schnellwechselvorrichtung für bagger
WO2000037742A1 (fr) * 1998-12-10 2000-06-29 Ove Hammarstrand Agencement d'outil
EP1033447A2 (fr) * 1999-03-02 2000-09-06 Mantovanibenne S.r.l. Dispositif d'accouplement et de désaccouplement rapide d'un outil sur une flêche
EP1033447A3 (fr) * 1999-03-02 2000-12-06 Mantovanibenne S.r.l. Dispositif d'accouplement et de désaccouplement rapide d'un outil sur une flêche
US6332732B1 (en) 1999-03-02 2001-12-25 Mantovanibenne S.R.L. Device for rapid tool coupling and release on tool arms
EP1445385A1 (fr) * 2003-02-07 2004-08-11 Cangini Benne S.R.L. Attache rapide pour outil
EP1840276A2 (fr) * 2006-03-27 2007-10-03 Baumaschinentechnik Gesellschaft m.b.H. Attache rapide pour engins de travaux publics
EP1840276A3 (fr) * 2006-03-27 2008-06-11 Baumaschinentechnik Gesellschaft m.b.H. Attache rapide pour engins de travaux publics
EP2096212A3 (fr) * 2006-03-27 2013-12-04 Baumaschinentechnik Gesellschaft m.b.H. Attache outil pour engin de chantier
CN102427780A (zh) * 2009-05-20 2012-04-25 爱尔康研究有限公司 加压冲洗挤压条带

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