EP0521560B1 - Pièce de verrouillage - Google Patents

Pièce de verrouillage Download PDF

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Publication number
EP0521560B1
EP0521560B1 EP92201901A EP92201901A EP0521560B1 EP 0521560 B1 EP0521560 B1 EP 0521560B1 EP 92201901 A EP92201901 A EP 92201901A EP 92201901 A EP92201901 A EP 92201901A EP 0521560 B1 EP0521560 B1 EP 0521560B1
Authority
EP
European Patent Office
Prior art keywords
clamping wedge
coupling piece
rods
setting cylinder
implement
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
EP92201901A
Other languages
German (de)
English (en)
Other versions
EP0521560A3 (en
EP0521560A2 (fr
Inventor
Adrianus Matheus Clasina Maria Van Doornmalen
Gertrudis Maria Gerardus De Gier
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.)
Metaalwarenfabriek A P Verachtert BV
Original Assignee
Methold s Hertogenbosch BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19859455&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0521560(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Methold s Hertogenbosch BV filed Critical Methold s Hertogenbosch BV
Priority to DE19929218344 priority Critical patent/DE9218344U1/de
Publication of EP0521560A2 publication Critical patent/EP0521560A2/fr
Publication of EP0521560A3 publication Critical patent/EP0521560A3/en
Application granted granted Critical
Publication of EP0521560B1 publication Critical patent/EP0521560B1/fr
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 a combination of an implement and a coupling piece for coupling the implement, such as e.g. an excavator bucket, to the end of a jib of an excavator or the like, which coupling piece can be pivotally connected to the jib as well as to a setting cylinder coupled to the jib, whereby the implement is provided with two connecting plates secured to the implement, said connecting plates being provided with recesses for receiving studs forming part of the coupling piece as well as with conical recesses for receiving a clamping wedge associated with the coupling piece wherein two rods, which extend parallel to each other and perpendicularly to the longitudinal direction of the clamping wedge are associated with the clamping wedge and passed through holes provided in parts of the coupling piece, said rods being surrounded by compression springs, which are confined between said parts of the coupling piece and stops secured to the ends of the rods remote from the clamping wedge, the arrangement being such that in the situation where the coupling piece is coupled to the implement said
  • Such a coupling piece is e.g. known from Dutch patent application no. 7904335.
  • the clamping wedge is fixed to the coupling piece and drawn into the conical recesses, so as to secure the coupling piece to the implement by means of bolts, which at their free ends could be surrounded by small compression springs and which have to be tightened or loosened manually by the operator of the crane for coupling and/or uncoupling the implement.
  • Said coupling and uncoupling of the implement is thus still a time-consuming job, whilst furthermore the bolts constitute vulnerable parts, which are easily damaged.
  • the object of the invention is to obtain a coupling piece of the above kind, wherein the above-described drawbacks can be avoided.
  • a setting cylinder is provided on the coupling piece, by means of which the clamping wedge and the rods can be moved in the longitudinal direction of said rods against the action of the compression springs surrounding said rods over a substantial part of their length in such a way that the clamping wedge and the rod, which are removable fixed to said clamping wedge can be moved by means of said setting cylinder over a distance sufficiently for moving the clamping wedge out of the conical recesses, whereby said setting cylinder is arranged substantially parallel to and between said rods, which are arranged on either side of the setting cylinder symmetrically with respect thereto, and can be adjusted into a position wherein the setting cylinder has no operative connection with the clamping wedge.
  • the setting cylinder will be a hydraulic setting cylinder, which may be connected to the hydraulic circuit of the excavator of the like, so that it can be controlled from the driver's cab of the excavator. It is also possible, however, to provide e.g. pneumatic or electric setting cylinders, which may e.g. be connected to corresponding circuits of the excavators or the like. During normal operation the compression springs will take care of it that the clamping wedge remains in the position suitable for clamping down the implement to the coupling piece, so that during operation it will not be necessary to keep the setting cylinder under pressure for this purpose. This also enhances the safety during operation.
  • the setting cylinder can be adjusted into ⁇ a position in which the setting cylinder has no operative connection with the clamping wedge it is avoided that during operation undesirable forces are exerted on the setting cylinder via the clamping wedge, as a result of which overloading of and damage to the setting cylinder is avoided.
  • Figure 1 is a plan view of a coupling piece and, illustrated in chain-dotted lines, of connecting plates secured to an implement.
  • Figure 2 is a side view of Figure 1, seen according to the arrow II in figure 1, wherein some parts have been left out.
  • Figure 3 is a view of Figure 1, seen in the direction indicated by the arrow III in Figure 1.
  • Figure 4 is a sectional view of Figure 1, at the location of the setting cylinder.
  • Figure 5 is a sectional view of Figure 1, at the location of a spring.
  • the coupling piece illustrated in the Figures comprises a bent plate-shaped part 2, to one end of which a pin 3 is connected.
  • the ends of the pin 3 form studs 4, whose diameter is slightly smaller than that of the other part of the pin 3.
  • reinforcing ribs 5 are secured to the plate, said reinforcing ribs extending perpendicularly to said part of the plate.
  • reinforcing ribs 6 extending parallel to the reinforcing ribs 5 are provided near the end of the plate 2 remote from the shaft 3, said reinforcing ribs 6 with one end being connected to the ends of the reinforcing ribs 5 by means of plate-shaped parts 7 extending perpendicularly to the reinforcing ribs.
  • plate-shaped parts 7 holes 8 are provided, through which pins 9 are passed.
  • Said pins 9 are surrounded by compression springs, which are confined between the plates 7 and further supporting plates 11, which are secured to the pins 9 by means of bolts 12.
  • the other ends of the pins 9 are secured, by means of bolts 13, to a clamping wedge 14 extending perpendicularly to the bolts 10.
  • reinforcing ribs 6 Between the reinforcing ribs 6 further reinforcing ribs 15 are secured to the plate 2, whereby said ribs 15 are connected to the ribs 6 by means of a transverse rib 16, in which a hole is provided for passing a cylinder housing 17 of a hydraulic setting cylinder, which is secured to the reinforcing ribs 16 by means of bolts 18.
  • the housing 17 of the setting cylinder accommodates a piston, which is connected to a piston rod 19, said piston rod with one end projecting beyond the housing 17 and at this end being provided with a spherical head 20.
  • the spherical head 20 lies opposite a conical recess 21, which is provided in a surface of the clamping wedge 14 facing the setting cylinder.
  • Lines 22 and 23 are connected to the setting cylinder for the supply and discharge of pressurized fluid, whereby said lines may be connected to the hydraulic circuit of an excavator or the like in a manner known per se.
  • Projecting ears 24 are secured to the plate 2 at the side of the plate 2 remote from the setting cylinder, said ears being provided with holes 25 for coupling the coupling piece to the jib of an excavator or the like in a manner known per se.
  • the above-described coupling piece which during operation will be coupled to the end of the jib of an excavotor or the like as well as to a setting cylinder provided on said jib, so that the coupling piece can be pivoted with respect to the jib by means of the setting cylinder, is intended for coupling implements to the jib.
  • Such implements such as e.g. an excavator bucket, will thereby be provided in a usual manner with two connecting plates 26 secured to the implement, said connecting plates being provided with hook-shaped parts 27 for receiving the studs 4.
  • the plates are provided, in a manner known per se, with conical recesses for receiving the correspondingly shaped ends of the clamping wedge 14, all this in such a manner that the clamping wedge 14 will be drawn firmly into the recesses, towards the left, when seen in Figure 2, under the influence of the compression springs 10.
  • the angle of the wedge-shaped parts of the wedge and the correspondingly shaped recesses in the plates has been chosen such that the ends of the clamping wedge are accommodated in the respective recesses in a self-gripping manner, so that the wedge will not tend to work itself loose from the coupled position shown in the Figures.
  • any tendency of the clamping wedge 14 to work itself loose from the coupled position shown in the Figures is opposed by the springs 10, which draw the clamping wedge into the recesses.
  • the sphere 20 secured to the end of the piston rod 19 is spaced by some distance from the boundary face of the recess 21 provided in the wedge, so that the forces exerted on the wedge will not be transmitted to the setting cylinder of which the piston rod 19 forms part.
  • the piston rod 19 can be moved towards the right, when seen in Figure 1, by supplying pressurized fluid to the setting cylinder, so that the sphere 20 is pressed into the recess 21 provided in the clamping wedge and the clamping wedge 14 is moved towards the right, when seen in Figure 1, into a position in which the wedge-shaped ends of the clamping wedge 14 are removed from the recesses in the plates 26. Due to the two compression springs acting on the clamping wedge said clamping wedge is moved evenly and it is avoided that the wedge is pressed out of alignment, which may lead to the wedge becoming jammed. After the wedge 14 has been removed from the recesses 26 the coupling piece can be uncoupled by suitably manipulating the connecting plates and the implement equipped therewith, in order to be coupled to another implement provided with similar connecting plates again.
  • a further advantage of the construction according to the invention is that the same coupling piece is suitable for remote control by means of a hydraulic cylinder as described above, as well as for a mechanical connection, in which case the setting cylinder may be left out and the clamping wedge may be fixed in the usual manner by means of bolts.
  • a construction originally made for mechanical connection may thus be adapted for remote control at a later stage, e.g. by simply providing the setting cylinder.
  • protecting hoods 30 may furthermore be secured to the ends of the connecting plates in which the recess for receiving the wedge-shaped ends of the clamping wedge 14 are provided, said protecting hoods constituting a protection for the ends of the clamping wedge 14 as well as for the recesses receiving said ends, and at the same time form an additional reinforcement of the connecting plates, so as to oppose undesirable bending of the connecting plates near the recesses receiving the ends of the clamping wedge 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Food-Manufacturing Devices (AREA)
  • Shovels (AREA)
  • External Artificial Organs (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Table Devices Or Equipment (AREA)
  • Clamps And Clips (AREA)
  • Adornments (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)

Claims (6)

  1. Combinaison d'un équipement et d'un élément de verrouillage (2-4), destinée à verrouiller un équipement, comme par exemple un godet d'excavateur ou godet à bord tranchant, sur l'extrémité de la flèche d'un excavateur ou d'un engin analogue, élément de verrouillage (2-4) pouvant être raccordé de façon pivotante sur la flèche ainsi que sur un vérin de réglage accouplé à la flèche, l'équipement étant muni de deux plaques de raccordement (26) fixées sur l'équipement, ces plaques de raccordement (26) étant munies d'évidements pour recevoir des goujons (4) faisant partie de l'élément de verrouillage (2-4) ainsi que des évidements coniques pour recevoir un coin de bridage (14) affecté à l'élément de verrouillage (2-4), combinaison dans laquelle deux tiges (9) qui s'étendent parallèlement l'une par rapport à l'autre et perpendiculairement à la direction longitudinale du coin de bridage (14), sont affectées au coin de bridage (14) et traversent les trous (8) ménagés dans les pièces (7) de l'élément de verrouillage, ces tiges (9) étant entourées de ressorts de compression (10) qui sont emprisonnés entre ces pièces (7) de l'élément de verrouillage et des butées (11) fixées sur les extrémités des tiges (9) en éloignement du coin de bridage, l'agencement étant tel que dans la situation où l'élément de verrouillage (2-4) est accouplé à l'équipement, ces ressorts de compression (10) ont tendance à exercer une traction sur le coin de bridage (14) pour l'amener solidement dans les évidements coniques, combinaison caractérisée en ce qu'il est prévu un vérin de réglage (17) sur l'élément de verrouillage, vérin au moyen duquel le coin de bridage (14) et les tiges (9) peuvent être déplacés dans la direction longitudinale des tiges (9) en opposition à l'action des ressorts de compression (10) entourant ces tiges sur une grande partie de leur longueur de façon à pouvoir déplacer le coin de bridage (14) et les tiges (9) qui sont fixées de façon amovible sur le coin de bridage (14), à l'aide de ce vérin de réglage sur une distance suffisante pour faire sortir le coin de bridage (14) des évidements coniques, ce vérin de réglage (17) étant disposé sensiblement parallèlement à et entre ces tiges (9) qui sont disposées de part et d'autre du vérin de réglage (17) symétriquement par rapport à celui-ci et peuvent être ajustées sur une position dans laquelle le vérin de réglage (17) n'a aucune liaison opérante avec le coin de bridage (14).
  2. Combinaison selon la revendication 1, caractérisée en ce qu'un logement de vérin (17) du vérin de réglage hydraulique est raccordé à demeure (18) sur l'élément de verrouillage et en ce qu' une extrémité de la tige de piston (19) faisant saillie hors du logement du vérin (17) peut être déplacée d'une position dans laquelle l'extrémité est espacée du coin de bridage (14) d'une certaine distance sur une position dans laquelle cette extrémité vient en butée contre le coin de serrage (14) et peut ensuite être encore déplacée de façon à déplacer le coin de bridage (14) en opposition à l'action du ressort de compression (10) parallèlement à la direction longitudinale du vérin de réglage.
  3. Combinaison selon la revendication 2, caractérisée en ce qu'un corps sphérique (20) est fixé sur l'extrémité de la tige de piston (19) et en ce qu'il est prévu en opposition à ce corps sphérique (20) un évidement conique (21) dans le coin de bridage (14).
  4. Combinaison selon l'une quelconque des revendications précédentes, caractérisée en ce que les tiges (9) sont fixées de façon amovible sur le coin de bridage (14) au moyen de boulons (13).
  5. Combinaison selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments de renforcement en forme de capuchon (30) sont disposés à proximité des évidements sur les côtés des plaques de raccordement (26) en éloignement l'un de l'autre.
  6. Elément de verrouillage (2-4) destiné à l'utilisation dans une combinaison selon l'une quelconque des revendications précédentes, comprenant un coin de bridage (14) qui a été fixé de façon amovible sur deux tiges (9) s'étendant parallèlement entre elles et perpendiculairement à la direction longitudinale du coin de bridage, ces tiges (9) traversant les trous (8) ménagés dans les parties (7) de l'élément de verrouillage et étant entourées sur une grande partie de leur longueur des ressorts de compression (10) qui sont emprisonnés entre ces parties (7) de l'élément de verrouillage et des butées (11) fixées sur les extrémités des tiges (9) en éloignement du point de bridage, tandis qu'un vérin de réglage (17) est prévu sur l'élément de verrouillage entre et parallèlement aux tiges (9) pour déplacer l'élément de verrouillage (2-4) et les tiges (9) dans la direction longitudinale des tiges (9) en opposition à l'action des ressorts de compression (10).
EP92201901A 1991-07-02 1992-06-26 Pièce de verrouillage Expired - Lifetime EP0521560B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19929218344 DE9218344U1 (de) 1991-07-02 1992-06-26 Kupplungsstück

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9101150A NL9101150A (nl) 1991-07-02 1991-07-02 Koppelstuk.
NL9101150 1991-07-02

Publications (3)

Publication Number Publication Date
EP0521560A2 EP0521560A2 (fr) 1993-01-07
EP0521560A3 EP0521560A3 (en) 1993-03-17
EP0521560B1 true EP0521560B1 (fr) 1995-08-30

Family

ID=19859455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92201901A Expired - Lifetime EP0521560B1 (fr) 1991-07-02 1992-06-26 Pièce de verrouillage

Country Status (7)

Country Link
EP (1) EP0521560B1 (fr)
AT (1) ATE127189T1 (fr)
DE (1) DE69204385T2 (fr)
DK (1) DK0521560T3 (fr)
ES (1) ES2079786T3 (fr)
GR (1) GR3017671T3 (fr)
NL (1) NL9101150A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6163989A (en) * 1997-03-10 2000-12-26 Clark Equipment Company Frame for mounting on a boom mounted quick change bracket

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA946878B (en) * 1993-09-08 1995-04-24 Keech Castings Australia Hydraulic fastening device and method
DE4410194A1 (de) 1994-03-24 1995-10-05 Karl Heinz Josef Leh Am Auslegerarm eines Bodenbearbeitungswerkzeuges, Baggers o. dgl. befestigbare Aufnahme- und Befestigungsvorrichtung für ein Werkzeug, einen Baggerlöffel o. dgl.
FR2785952B1 (fr) 1998-11-12 2001-04-06 Alain Husson Attache rapide pour fixer un outil a l'extremite du bras d'un chargeur ou analogue
FR2785951B1 (fr) * 1998-11-12 2001-01-26 Alain Husson Attache rapide pour fixer un outil a l'extremite du bras d'un chargeur ou analogue
NL1011374C1 (nl) * 1999-02-23 2000-08-24 Verachtert A P Metaalfab Verbindingsstuk.
FR2808542B1 (fr) * 2000-05-03 2003-03-07 Alain Husson Attache rapide pour fixer un outil a l'extremite du bras d'un chargeur ou analogue
FR2809779B1 (fr) * 2000-05-31 2002-07-19 Alain Husson Dispositif de securite pour attache rapide destinee a fixer un outil a l'extremite du bras d'un chargeur ou analogue
US6305106B1 (en) * 2001-02-23 2001-10-23 Mclellan Robin S. Apparatus for releasably coupling an attachment to an excavator
US10029896B2 (en) * 2014-12-17 2018-07-24 Caterpillar Inc. Tool coupler having compact locking configuration
US11421394B2 (en) 2016-08-18 2022-08-23 Daemo Engineering Co., Ltd. Double safety device for quick coupler
DE102019104321A1 (de) * 2019-02-20 2020-08-20 Thomas Jansen Schnellkupplungssystem

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL170447C (nl) * 1979-06-01 1984-03-16 Bofors Nederland Inrichting voor het koppelen van een gereedschap aan een giek met behulp van een tussenstuk en een koppelstuk.
DE3312442C2 (de) * 1983-04-07 1986-05-28 Karl Schaeff GmbH & Co, Maschinenfabrik, 7183 Langenburg Schnellwechselvorrichtung für Arbeitswerkzeuge an einem Baggerausleger
AT389906B (de) * 1987-11-23 1990-02-26 Lehnhoff Hartstahl Ges M B H Schnellwechselvorrichtung mit automatischer verriegelung fuer arbeitswerkzeuge an einem baggerausleger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6163989A (en) * 1997-03-10 2000-12-26 Clark Equipment Company Frame for mounting on a boom mounted quick change bracket

Also Published As

Publication number Publication date
DE69204385T2 (de) 1996-02-22
NL9101150A (nl) 1993-02-01
EP0521560A3 (en) 1993-03-17
ATE127189T1 (de) 1995-09-15
GR3017671T3 (en) 1996-01-31
DE69204385D1 (de) 1995-10-05
DK0521560T3 (da) 1995-10-16
ES2079786T3 (es) 1996-01-16
EP0521560A2 (fr) 1993-01-07

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