EP0448788B1 - Quick coupling device for an excavator - Google Patents
Quick coupling device for an excavator Download PDFInfo
- Publication number
- EP0448788B1 EP0448788B1 EP90122462A EP90122462A EP0448788B1 EP 0448788 B1 EP0448788 B1 EP 0448788B1 EP 90122462 A EP90122462 A EP 90122462A EP 90122462 A EP90122462 A EP 90122462A EP 0448788 B1 EP0448788 B1 EP 0448788B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pistons
- pressure
- locking
- housing
- adapter
- 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
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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
- E02F3/3627—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 longitudinal locking element
-
- 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
- E02F3/3631—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 transversal locking element
-
- 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 quick-change device according to the preamble of claim 1.
- a quick coupling for connecting an implement to a shovel loader which comprises a pair of bolts which can be brought into or out of engagement with holes in the implement.
- the bolts are actuated via linkage and bellcrank, which are connected to a compressed air cylinder.
- a quick-change device with coaxially arranged locking bolts is known from FR-A 2 304 726. These can be moved in a housing by means of scissor levers, which can be adjusted by a controllable hydraulic cylinder.
- a device is known from GB-A 2 132 584, the locking bolts of which are held coaxially in a housing and which can be displaced into positions for releasing and locking via a respective hydraulic cylinder. Furthermore, from DE-U 9 001 617 a changing device with two coaxially arranged locking bolts is known, which are only hydraulically adjustable. From EP-A 273 828 a locking device with a bolt is known which has a conical head at the end and can be moved into and out of a corresponding opening by means of controllable hydraulic pressure.
- the object of the invention is to provide a quick-change device which ensures a reliable connection between the implement and the articulated arm.
- the main advantages achieved by the invention are that the locking bolts are in an interlocking position by an interposed single compression spring and pressurize the locking bolts or the pistons of the locking bolts accordingly only for adjustment into an unlocking position will. This ensures that the system is solely under the tension of the compression spring in the locking position and thus this position is not endangered if the pressure circuit fails.
- the locking elements consisting of coaxially arranged pistons with locking bolts in a cylindrical housing, can be accommodated in a space-saving manner in an adapter and can be dimensioned according to the requirements with regard to the absorption of forces and moments.
- the hydraulic control circuit is designed so that the pistons can be retracted against the tension of the compression spring.
- the pistons could also be pressurized in the effective direction of the compression spring.
- a unit consisting of a pair of pistons with two locking pins or two pairs of pistons with four locking pins can be used.
- the pistons are adjusted via an actuatable multi-way valve of the control unit, which can be adjusted manually or electrically using a switch.
- the implement to be connected to the articulated arm is hung on the adapter, for which purpose this comprises a hook which engages positively around a cam of the implement.
- a quick-change device 1 for an implement 2, such as for a backhoe, is housed in an adapter 3, which is connected to a coupling rod 4 and an articulated arm 5.
- the locking elements 6 are fastened in the adapter 3, these being arranged between the legs 7 and 8 of the bucket 2 for holding.
- the locking element 6 comprises in a cylindrical housing 9 coaxially arranged pistons 10 and 11 with locking bolts 12 and 13 formed at the ends. Between the two pistons 10 and 11 a compression spring 14 is arranged, which tries to displace the pistons in the arrow directions 16.
- Such a locking element 6 is shown in more detail in FIG. 4, with the locking bolt 12 in a retracted unlocking position R and the further locking bolt 13 in an extended locking position A for the sake of simplicity in a drawing.
- the locking bolts 12 and 13 together always have the same position A or R.
- the pistons 10 and 11 are connected to a hydraulic pressure circuit of a control unit 15 in such a way that the pistons can be displaced from the locking position A into the unlocking position R against the direction of the arrow 16.
- a pressure chamber 17 into each of which a pressure line 18, 18a opens.
- This pressure chamber 17 is delimited on the one hand by a guide sleeve 19 and on the other hand by a pressure flange 20, 20a of the respective piston.
- the compression spring 14 is supported at the end in blind bores 21 and 22 of the pistons 10 and 11. It penetrates a central transverse wall 23 on which the pressure flanges 20, 20a of the pistons 10 and 11 are supported in the unlocking position R.
- FIG. 8 a first possible hydraulic circuit diagram for the control of the pistons 10 and 11 in the unlocking position R is shown schematically.
- This control unit 15 essentially comprises a line 30 guided by a pump 28 via a multi-way valve 29, from which lines 18 and 18a branch to the pressure chambers 17 of the pistons 10 and 11.
- FIG. 9 a second possible hydraulic circuit diagram for the control of the pistons 10 and 11 in the unlocking position R and for support in the locking position A is shown schematically.
- the control unit 15a comprises two outgoing pressure lines 30 and 30a from the multi-way valve 29a.
- the first line 30 has lines 18 and 18a branching off to the pressure spaces 17.
- the second line 30a has a branching line 31 which leads in a space 33 between the pistons 10 and 11 and supports a movement of the pistons into a locking position A, ie the pistons are displaced in the effective direction of the spring 14.
- the recess in the connecting rib in the adapter 3 (Fig. 3) between the two bores 25 is designed so that it enables a pre-fixation during the coupling process as a counterpart to the stiffening profile on the bucket 2.
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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)
- Earth Drilling (AREA)
- Operation Control Of Excavators (AREA)
- Shovels (AREA)
- Lubricants (AREA)
- Manipulator (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Schnellwechselvorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a quick-change device according to the preamble of claim 1.
Aus der DE-A 17 84 323 ist eine Schnellkupplung zum Verbinden eines Arbeitsgerätes mit einem Schaufellader bekannt, die ein Bolzenpaar umfaßt, das in bzw. außer Eingriff mit Bohrungen des Arbeitsgerätes gebracht werden kann. Die Bolzen werden über Gestänge und Umlenkhebel betätigt, welche mit einem Druckluft-Zylinder verbunden sind. Eine solche Anordnung benötigt relativ viel Raum und die aufzubringenden Kräfte zum Verstellen der Bolzen sind verhältnismäßig hoch. Aus der FR-A 2 304 726 ist eine Schnellwechselvorrichtung mit koaxial angeordneten Sperrbolzen bekannt. Diese sind mittels Scherenhebel, welche von einem ansteuerbaren Hydraulikzylinder verstellbar sind, in einem Gehäuse verschiebbar. Desweiteren ist aus der GB-A 2 132 584 eine Vorrichtung bekannt, deren Sperrbolzen koaxial in einem Gehäuse gehalten sind und die über jeweils einen Hydraulikzylinder in Positionen zum Freigeben und Verriegeln verschiebbar sind. Ferner ist aus der DE-U 9 001 617 eine Wechselvorrichtung mit zwei koaxial zueinander angeordneten Sperrbolzen bekannt, die nur hydraulisch verstellbar sind. Aus der EP-A 273 828 ist eine Arretiervorrichtung mit einem Bolzen bekannt, der endseitig einen Kegelkopf aufweist und über ansteuerbaren hydraulischen Druck in eine entsprechende Öffnung hineinbewegbar bzw. herausbewegbar ist.From DE-A 17 84 323 a quick coupling for connecting an implement to a shovel loader is known which comprises a pair of bolts which can be brought into or out of engagement with holes in the implement. The bolts are actuated via linkage and bellcrank, which are connected to a compressed air cylinder. Such an arrangement requires a relatively large amount of space and the forces to be used to adjust the bolts are relatively high. A quick-change device with coaxially arranged locking bolts is known from FR-A 2 304 726. These can be moved in a housing by means of scissor levers, which can be adjusted by a controllable hydraulic cylinder. Furthermore, a device is known from GB-A 2 132 584, the locking bolts of which are held coaxially in a housing and which can be displaced into positions for releasing and locking via a respective hydraulic cylinder. Furthermore, from DE-U 9 001 617 a changing device with two coaxially arranged locking bolts is known, which are only hydraulically adjustable. From EP-A 273 828 a locking device with a bolt is known which has a conical head at the end and can be moved into and out of a corresponding opening by means of controllable hydraulic pressure.
Aufgabe der Erfindung ist es, eine Schnellwechselvorrichtung zu schaffen, die eine zuverlässige Verbindung zwischen Arbeitsgerät und Knickarm gewährleistet.The object of the invention is to provide a quick-change device which ensures a reliable connection between the implement and the articulated arm.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Merkmale beinhalten die Unteransprüche.This object is achieved according to the invention by the characterizing features of claim 1. The dependent claims contain further advantageous features.
Die mit der Erfindung hauptsächlich erzielten Vorteile bestehen darin, daß die Sperrbolzen durch eine zwischengeschaltete einzige Druckfeder in einer Verriegelungsposition stehen und nur zur Verstellung in eine Entriegelungsposition die Sperrbolzen bzw. die Kolben der Sperrbolzen entsprechend mit Druck beaufschlagt werden. Hierdurch wird gewährleistet, daß das System in der Verriegelungsposition alleinig unter der Spannung der Druckfeder steht und somit bei Ausfall des Druckkreislaufes diese Position nicht gefährdet ist.The main advantages achieved by the invention are that the locking bolts are in an interlocking position by an interposed single compression spring and pressurize the locking bolts or the pistons of the locking bolts accordingly only for adjustment into an unlocking position will. This ensures that the system is solely under the tension of the compression spring in the locking position and thus this position is not endangered if the pressure circuit fails.
Die Verriegelungselemente, bestehend aus koaxial angeordneten Kolben mit Sperrbolzen in einem zylindrischen Gehäuse, sind platzsparend in einem Adapter unterzubringen und entsprechend den Anforderungen hinsichtlich der Aufnahme von Kräften und Momenten dimensionierbar. Insbesondere wird der hydraulische Steuerkreis so ausgelegt, daß ein Zurückfahren der Kolben gegen die Spannung der Druckfeder erfolgen kann. Zur Unterstützung der Federspannung könnte nach einer weiteren Ausführung eine Druckbeaufschlagung der Kolben auch in Wirkrichtung der Druckfeder erfolgen.The locking elements, consisting of coaxially arranged pistons with locking bolts in a cylindrical housing, can be accommodated in a space-saving manner in an adapter and can be dimensioned according to the requirements with regard to the absorption of forces and moments. In particular, the hydraulic control circuit is designed so that the pistons can be retracted against the tension of the compression spring. To support the spring tension, the pistons could also be pressurized in the effective direction of the compression spring.
Je nach den Erfordernissen kann eine Baueinheit, bestehend aus einem Kolbenpaar mit zwei Sperrbolzen oder zwei Kolbenpaare mit vier Sperrbolzen, verwendet werden.Depending on the requirements, a unit consisting of a pair of pistons with two locking pins or two pairs of pistons with four locking pins can be used.
Die koaxiale Anordnung der beiden Kolben mit axialen Lagern der Druckfeder zwischen den Kolben ergibt eine kleinbauende kompakte Baueinheit, die in einfacher Weise im Adapter unterzubringen und montagefreundlich ein- und auszubauen ist.The coaxial arrangement of the two pistons with axial bearings of the compression spring between the pistons results in a compact, compact unit which can be easily accommodated in the adapter and is easy to install and remove.
Die Verstellung der Kolben erfolgt über ein betätigbares Mehrwegeventil der Steuereinheit, das manuell oder elektrisch über einen Schalter zu verstellen ist.The pistons are adjusted via an actuatable multi-way valve of the control unit, which can be adjusted manually or electrically using a switch.
Bei einer Ausführung der Schnellwechselvorrichtung mit nur einem Verriegelungselement wird das mit dem Knickarm zu verbindende Arbeitsgerät am Adapter eingehängt, wozu dieser einen Haken umfasst, der einen Nocken des Arbeitsgerätes formschlüssig umgreift.In the case of a design of the quick-change device with only one locking element, the implement to be connected to the articulated arm is hung on the adapter, for which purpose this comprises a hook which engages positively around a cam of the implement.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben.Embodiments of the invention are shown in the drawing and are described in more detail below.
Es zeigen
- Fig. 1
- eine Seitenansicht eines an einem Knickarm und einer Koppelstange über Verriegelungselemente gehaltenen Tieflöffels,
- Fig. 2
- eine Ansicht, in Pfeilrichtung X der Fig. 1 gesehen,
- Fig. 3
- einen Adapter in einer Seitenansicht,
- Fig. 4
- einen Schnitt nach der Linie IV-IV der Fig. 1 durch ein Verriegelungselement,
- Fig. 5
- eine weitere Ausführung einer Schnellwechseleinrichtung mit einem Verriegelungselement,
- Fig. 6
- eine Seitenansicht eines Adapters bei einer Einrichtung gemäß Fig. 5,
- Fig. 7
- einen Schnitt nach der Linie VII-VII der Fig. 5 durch den Adapter mit Verriegelungselement,
- Fig. 8
- einen hydraulischen Wirkschaltplan für zwei Verriegelungseinheiten, und
- Fig. 9
- einen weiteren hydraulischen Wirkschaltplan mit hydraulischer Druckunterstützung der Druckfeder.
- Fig. 1
- 1 shows a side view of a bucket held on a knuckle boom and a coupling rod via locking elements,
- Fig. 2
- 2 shows a view seen in the direction of the arrow X in FIG. 1,
- Fig. 3
- an adapter in a side view,
- Fig. 4
- 2 shows a section along the line IV-IV of FIG. 1 through a locking element,
- Fig. 5
- a further embodiment of a quick-change device with a locking element,
- Fig. 6
- 3 shows a side view of an adapter in a device according to FIG. 5,
- Fig. 7
- 5 shows a section along line VII-VII of FIG. 5 through the adapter with locking element,
- Fig. 8
- a hydraulic circuit diagram for two locking units, and
- Fig. 9
- another hydraulic circuit diagram with hydraulic pressure support of the compression spring.
Eine Schnellwechselvorrichtung 1 für ein Arbeitsgerät 2, wie z.B. für einen Tieflöffel, ist in einem Adapter 3 untergebracht, der mit einer Koppelstange 4 und einem Knickarm 5 verbunden ist. Im Adapter 3 sind die Verriegelungselemente 6 befestigt, wobei diese zwischen Schenkeln 7 und 8 des Tieflöffels 2 zum Halten angeordnet sind.A quick-change device 1 for an
Das Verriegelungselement 6 umfasst in einem zylindrischen Gehäuse 9 koaxial angeordnete Kolben 10 und 11 mit endseitig ausgebildeten Sperrbolzen 12 und 13. Zwischen den beiden Kolben 10 und 11 ist eine Druckfeder 14 angeordnet, die die Kolben in die Pfeilrichtungen 16 auseinander zu verschieben sucht.The
In Fig. 4 ist ein solches Verriegelungselement 6 näher dargestellt, wobei der Sperrbolzen 12 in einer eingefahrenen Entriegelungsposition R und der weitere Sperrbolzen 13 in einer ausgefahrenen Verriegelungsposition A der Einfachheit halber in einer Zeichnung dargestellt ist. Die Sperrbolzen 12 und 13 weisen zusammen immer eine gleiche Position A oder R auf.Such a
Die Kolben 10 und 11 sind mit einem hydraulischen Druckkreis einer Steuereinheit 15 derart verbunden, daß die Kolben von der Verriegelungsposition A in die Entriegelungsposition R entgegen der Pfeilrichtung 16 verschiebbar sind. Hierzu weisen die Kolben 10 und 11 zwischen den Sperrbolzen 12 und 13 und dem Gehäuse 9 einen Druckraum 17 auf, in den jeweils eine Druckleitung 18, 18a einmündet. Dieser Druckraum 17 ist einerseits durch eine Führungshülse 19 und andererseits durch einen Druckflansch 20, 20a des jeweiligen Kolbens begrenzt.The
Die Druckfeder 14 stützt sich endseitig in Sackbohrungen 21 und 22 der Kolben 10 und 11 ab. Sie durchdringt eine mittige Querwand 23, an welche sich die Druckflansche 20, 20a der Kolben 10 und 11 in der Entriegelungsposition R abstützen.The
Wie in der Ausführung gemäß Fig. 1 näher dargestellt ist, sind im Adapter 3 zwei Gehäuse 9 mit Verriegelungselementen 6 angeordnet. Die Sperrbolzen 12, 13 sind in der Hülse 19 geführt und durchdringen in der Verriegelungsposition A die Bohrungen 24 und 25 in den Schenkeln 7 und 8 des Tieflöffels 2.1, two
Nach einer weiteren Ausführung gemäß der Fig. 5 bis 7 ist im Adapter 3 nur ein Verriegelungselement 6 gehalten und der Adapter 3 weist einen Haken 26 auf, der einen Nocken 27 des Tieflöffels 2 untergreift.According to a further embodiment according to FIGS. 5 to 7, only one
In Fig. 8 ist ein erster möglicher hydraulischer Wirkschaltplan für die Steuerung der Kolben 10 und 11 in die Entriegelungsposition R schematisch dargestellt. Diese Steuereinheit 15 umfaßt im wesentlichen eine von einer Pumpe 28 über ein Mehrwegeventil 29 geführte Leitung 30, von der Leitungen 18 und 18a zu den Druckräumen 17 der Kolben 10 und 11 abzweigen.In Fig. 8 a first possible hydraulic circuit diagram for the control of the
In Fig. 9 ist ein zweiter möglicher hydraulischer Wirkschaltplan für die Steuerung der Kolben 10 und 11 in die Entriegelungsposition R und zur Unterstützung in der Verriegelungsposition A schematisch dargestellt. Die Steuereinheit 15a umfaßt vom Mehrwegeventil 29a zwei abgehende Druckleitungen 30 und 30a. Die erste Leitung 30 weist zu den Druckräumen 17 abzweigende Leitungen 18 und 18a auf. Die zweite Leitung 30a weist eine abzweigende Leitung 31 auf, die in einem Raum 33 zwischen den Kolben 10 und 11 führt und eine Bewegung der Kolben in eine Verriegelungsposition A unterstützt, d.h. die Kolben werden in Wirkrichtung der Feder 14 verschoben.In Fig. 9, a second possible hydraulic circuit diagram for the control of the
Die Aussparung in der Verbindungsrippe im Adapter 3 (Fig. 3) zwischen den beiden Bohrungen 25 ist so ausgebildet, daß sie als Gegenstück zum Versteifungsprofil am Tieflöffel 2, eine Vorfixierung beim Kupplungsvorgang ermöglicht.The recess in the connecting rib in the adapter 3 (Fig. 3) between the two bores 25 is designed so that it enables a pre-fixation during the coupling process as a counterpart to the stiffening profile on the
Claims (7)
- A rapid-change device for an excavator for changing operating tools detachably secured to an adapter (3) of a bending arm (5) by way of locking members (6) comprising blocking pins (12, 13) and held on the bending arm (5) so as to be pivotable about a horizontal axis, wherein the locking members (6) to be actuated by a control unit comprise two cooperating individual pistons (10, 11) arranged coaxially in a housing (9) and each forming at the free end a blocking pin (12, 13) displaceable into an unlocking position (R) which can be controlled hydraulically, characterized by the following features:a) an axially operating, pre-stressed compression spring (14), by which the blocking pins (12, 13) are displaceable into a locking position (A) and are held [there], are arranged between the blocking pins (12, 13);b) the blocking pins (12, 13) comprise a pressure flange (20, 20a) having a larger diameter and supported on a central transverse wall (23) of the housing (9);c) a compression chamber (17), into which a pressure line (18, 18a) of the control unit (15; 15a) opens, is formed between the pressure flange (20, 20a) and a guide sleeve (19) closing the housing (9).
- A device according to Claim 1, characterized in that two adjacent locking members (6) are arranged in the adapter (3) and are secured therein by way of bolts, wherein arms (7, 8) of an operating tool (2) engage around the adapter (3), bores (24 and 25) being arranged in the said arms (7, 8) so as to correspond to the blocking pins (12 and 13).
- A device according to Claim 1, characterized in that the adapter (3) comprises hooks (26) engaging with cams (27) of the operating tool (2) as well as a locking member (6) arranged adjacent to a bearing point of a connecting rod (4) and engaging in bores (24, 25) of the arms (7, 8) of the operating tool (2).
- A device according to Claim 1 or one of the preceding Claims, characterized in that the pistons (10, 11) in the unlocking position (R) are supported on a central transverse wall (23) of the housing (9), the single compression spring (14) passing through the said transverse wall (23).
- A device according to one of Claims 1 to 4, characterized in that the control unit (15) comprises an actuable distributing valve (29) in a pressure line (30) comprising the branching pressure lines (18, 18a) to the respective individual pressure chambers (17) of the coaxially arranged individual pistons (10, 11) in each housing (9).
- A device according to one of Claims 1 to 5, characterized in that the control unit (15a) comprises first and second pressure lines (30, 30a) starting from an actuable distributing valve (29a), wherein the first pressure line (30) comprises branching lines (18, 18a) to the pressure chambers (17a) of the pistons (10, 11) arranged coaxially and the second pressure line (30a) comprises a line (31) opening into an intermediate space (33) provided between the two pistons (10, 11).
- A device according to Claim 6, characterized in that the pressure chamber (33) between the two pistons (10 and 11) is constructed in such a way that the displacement of the pistons (10 and 11) into a locking position (A) can be facilitated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4010224 | 1990-03-30 | ||
| DE4010224A DE4010224C2 (en) | 1990-03-30 | 1990-03-30 | Quick change device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0448788A1 EP0448788A1 (en) | 1991-10-02 |
| EP0448788B1 true EP0448788B1 (en) | 1994-11-09 |
Family
ID=6403398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90122462A Expired - Lifetime EP0448788B1 (en) | 1990-03-30 | 1990-11-26 | Quick coupling device for an excavator |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5125788A (en) |
| EP (1) | EP0448788B1 (en) |
| JP (1) | JPH04222724A (en) |
| AT (1) | ATE114010T1 (en) |
| DE (2) | DE4010224C2 (en) |
| NO (1) | NO302249B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4417401A1 (en) * | 1994-05-18 | 1995-11-30 | Thomas Dipl Ing Ostermeyer | Equipment carrier |
| WO1998053152A1 (en) * | 1997-05-21 | 1998-11-26 | Accima Ab | Device for detachable coupling of an implement to the operating arm of an excavator |
| EP1057941A2 (en) * | 1999-05-11 | 2000-12-06 | Daemo Engineering Co., Ltd. | A coupling apparatus for detachably attaching an excavating device to excavator |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4223734C2 (en) * | 1992-07-18 | 1996-04-18 | Orenstein & Koppel Ag | Quick change device |
| FR2702526B1 (en) * | 1993-03-10 | 1995-05-24 | Koehl Jean Marie Gerard Rene | Device for the rotational assembly of an arm or the like with and between two branches of a fork-shaped part. |
| US5486084A (en) * | 1993-06-07 | 1996-01-23 | Raymond F. Pitman | Multiple purpose material handling and working apparatus |
| DE4408386C2 (en) * | 1994-03-12 | 1996-07-04 | Orenstein & Koppel Ag | Hydraulically operated locking device for quick couplers on construction and work machines |
| US5634735A (en) * | 1995-06-07 | 1997-06-03 | Wain-Roy, Inc. | Tool coupler |
| DE19806057C2 (en) * | 1998-02-13 | 2002-11-28 | Franz Wimmer | Construction adapter |
| DE29903774U1 (en) * | 1999-03-02 | 1999-09-30 | Liebherr Hydraulikbagger | Coupling for swinging attachment of a tool to the arm of an excavator or other handling device |
| WO2000070155A1 (en) * | 1999-05-15 | 2000-11-23 | Bruce Archibald Short | Connection apparatus |
| US6994284B1 (en) * | 1999-10-15 | 2006-02-07 | Ramun John R | Multiple tool attachment system |
| US7975944B2 (en) * | 1999-10-15 | 2011-07-12 | John R. Ramun | Modular system for connecting attachments to a construction machine |
| US6776571B2 (en) * | 2000-10-12 | 2004-08-17 | James M. Lemieux | Fork attachment for backhoe |
| KR100430064B1 (en) * | 2001-05-18 | 2004-05-03 | 한국기계연구원 | Quick Coupler Use Of Excavator |
| WO2003027401A1 (en) * | 2001-09-26 | 2003-04-03 | Hanwoo Tnc Corporation | Attachment coupling device for heavy machinery |
| ITPR20040090A1 (en) * | 2004-12-14 | 2005-03-14 | Pmi Padana Macchine Ind Spa | HYDRAULIC EQUIPMENT AND PROCEDURE FOR INSERTION / EXTRACTION OF PLUGS ON EARTH-DRIVEN ARMS. |
| JP4867371B2 (en) * | 2006-02-01 | 2012-02-01 | コベルコ建機株式会社 | Pin coupling device |
| FR2900170A1 (en) * | 2006-04-21 | 2007-10-26 | Innovation Equipement Sarl | Bucket coupling device for excavator, has central reducer passing hydraulic oil into casing for releasing pistons to lock bucket in arm, and lateral reducers passing oil into casing for re-positioning piston to unlock bucket from arm |
| US7690880B2 (en) * | 2006-04-25 | 2010-04-06 | Clark Equipment Company | Locking device for hydraulic attachment interface |
| US7984575B2 (en) * | 2007-07-05 | 2011-07-26 | Caterpillar Inc. | Quick coupler assembly |
| JP4912280B2 (en) * | 2007-11-21 | 2012-04-11 | 株式会社室戸鉄工所 | Attachment coupler |
| CA2651295A1 (en) * | 2009-01-27 | 2010-07-27 | Nye Manufacturing Ltd. | Coupler device to connect bucket or tool to boom arm |
| CA2829379A1 (en) | 2011-03-10 | 2012-09-13 | Clark Equipment Company | Implement coupling system for a power machine |
| US8974137B2 (en) | 2011-12-22 | 2015-03-10 | Caterpillar Inc. | Quick coupler |
| US8684623B2 (en) | 2012-05-30 | 2014-04-01 | Caterpillar Inc. | Tool coupler having anti-release mechanism |
| US9217235B2 (en) | 2012-05-30 | 2015-12-22 | Caterpillar Inc. | Tool coupler system having multiple pressure sources |
| US8869437B2 (en) | 2012-05-30 | 2014-10-28 | Caterpillar Inc. | Quick coupler |
| AT513332A1 (en) * | 2012-08-31 | 2014-03-15 | Wacker Neuson Linz Gmbh | Device for coupling media lines assigned to a carrier device and a tool |
| US9228314B2 (en) | 2013-05-08 | 2016-01-05 | Caterpillar Inc. | Quick coupler hydraulic control system |
| FR3019197A1 (en) * | 2014-03-26 | 2015-10-02 | Morin | SYSTEM FOR ENGAGING A QUICK ATTACHMENT ASSEMBLY |
| GB2544746A (en) * | 2015-11-24 | 2017-05-31 | Caterpillar Work Tools Bv | Apparatus and method for assembling work tool to a machine |
| US11805738B2 (en) | 2020-04-24 | 2023-11-07 | Paul E. Schmelz | Sod roller terminal attachment for excavator |
| US11952738B2 (en) | 2020-09-18 | 2024-04-09 | Great Plains Manufacturing, Inc. | Attachment coupler |
| CN115262670A (en) * | 2022-07-14 | 2022-11-01 | 宁波吉威熔模铸造有限公司 | Engineering machine tool scraper bowl coupling assembling convenient to assembly |
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| US2267644A (en) * | 1937-07-01 | 1941-12-23 | Hydraulic Press Corp Inc | Hydraulic machine circuit |
| US3033171A (en) * | 1960-09-07 | 1962-05-08 | Sperry Rand Corp | Interlocking means for hydraulic servomotor systems |
| DE1784323A1 (en) * | 1968-07-27 | 1971-08-19 | Carl Kaelble Gmbh Motoren U Ma | Quick change device for shovel loader |
| GB1289602A (en) * | 1970-04-27 | 1972-09-20 | ||
| US3934738A (en) * | 1974-04-01 | 1976-01-27 | Wain-Roy, Inc. | Tool connecting |
| DE2511819C3 (en) * | 1975-03-18 | 1978-10-19 | Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf | Hydraulic excavator |
| SE399866B (en) * | 1975-09-12 | 1978-03-06 | Renholmens Mek Verkstad Ab | QUICK COUPLING DEVICE FOR AUTOMATIC CONNECTION OF ONE OF A LOADING MACHINE OR OTHER TOOL CARRIER SUPPORTED TOOL MOUNTING WITH A WORK TOOL |
| US4373852A (en) * | 1981-07-06 | 1983-02-15 | J. I. Case Company | Quick coupling and release mechanism for buckets |
| DE8237194U1 (en) * | 1982-01-13 | 1984-02-02 | Kramer-Werke GmbH, 7770 Überlingen | SHOVEL LOADER WITH A LOADING SHOVEL ARRANGEMENT FOR SELECTIVE PIVOTING FORWARD OR SIDEWAY |
| SE458693B (en) * | 1982-11-19 | 1989-04-24 | Lidkoeping Svets & Maskinprod | DEVICE FOR LOOSABLE CONNECTION OF A WORKING TOOL AND AN EXCAVATOR MANOEVER |
| GB2132584B (en) * | 1982-12-24 | 1986-08-28 | Dobson Park Ind | Releasable connection device |
| DE8420678U1 (en) * | 1984-07-11 | 1984-10-11 | Krupp Mak Maschinenbau Gmbh, 2300 Kiel | LOCKING AND REMOVING DEVICE FOR WORKING EQUIPMENT |
| FR2609075B1 (en) * | 1986-12-26 | 1991-08-30 | Poncin Gilles | QUICK COUPLING DEVICE FOR EQUIPMENT OF CIVIL ENGINEERING AND HANDLING EQUIPMENT |
| DE3808313A1 (en) * | 1988-03-12 | 1989-09-28 | Kramer Werke Gmbh | WORK VEHICLE, IN PARTICULAR LOADER |
| DE9001617U1 (en) * | 1990-02-12 | 1990-04-19 | Fritzel, Walter, 6366 Wölfersheim | Backhoe |
-
1990
- 1990-03-30 DE DE4010224A patent/DE4010224C2/en not_active Expired - Fee Related
- 1990-11-26 DE DE59007696T patent/DE59007696D1/en not_active Expired - Fee Related
- 1990-11-26 EP EP90122462A patent/EP0448788B1/en not_active Expired - Lifetime
- 1990-11-26 AT AT90122462T patent/ATE114010T1/en not_active IP Right Cessation
-
1991
- 1991-03-25 US US07/676,268 patent/US5125788A/en not_active Expired - Fee Related
- 1991-03-27 JP JP3063329A patent/JPH04222724A/en active Pending
- 1991-03-27 NO NO911268A patent/NO302249B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4417401A1 (en) * | 1994-05-18 | 1995-11-30 | Thomas Dipl Ing Ostermeyer | Equipment carrier |
| WO1998053152A1 (en) * | 1997-05-21 | 1998-11-26 | Accima Ab | Device for detachable coupling of an implement to the operating arm of an excavator |
| EP1057941A2 (en) * | 1999-05-11 | 2000-12-06 | Daemo Engineering Co., Ltd. | A coupling apparatus for detachably attaching an excavating device to excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| US5125788A (en) | 1992-06-30 |
| DE59007696D1 (en) | 1994-12-15 |
| EP0448788A1 (en) | 1991-10-02 |
| ATE114010T1 (en) | 1994-11-15 |
| DE4010224C2 (en) | 1994-05-19 |
| DE4010224A1 (en) | 1991-10-02 |
| NO911268L (en) | 1991-10-01 |
| JPH04222724A (en) | 1992-08-12 |
| NO911268D0 (en) | 1991-03-27 |
| NO302249B1 (en) | 1998-02-09 |
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