EP0143074A1 - Excavator - Google Patents

Excavator Download PDF

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Publication number
EP0143074A1
EP0143074A1 EP84810450A EP84810450A EP0143074A1 EP 0143074 A1 EP0143074 A1 EP 0143074A1 EP 84810450 A EP84810450 A EP 84810450A EP 84810450 A EP84810450 A EP 84810450A EP 0143074 A1 EP0143074 A1 EP 0143074A1
Authority
EP
European Patent Office
Prior art keywords
wedge
excavator
gripping device
boom
excavator according
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
EP84810450A
Other languages
German (de)
French (fr)
Other versions
EP0143074B1 (en
Inventor
Fredi Stury
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.)
Fredi Stury AG
Original Assignee
Fredi Stury AG
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 Fredi Stury AG filed Critical Fredi Stury AG
Priority to AT84810450T priority Critical patent/ATE37404T1/en
Publication of EP0143074A1 publication Critical patent/EP0143074A1/en
Application granted granted Critical
Publication of EP0143074B1 publication Critical patent/EP0143074B1/en
Expired 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
    • E02F3/3627—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
    • E02F3/3663—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 present invention relates to an excavator having a boom and a bucket attached to the boom.
  • the object of the present invention is to improve the excavator so that it does not have the disadvantages mentioned.
  • the boom 1 of the excavator contains a main carrier 2 and an auxiliary carrier 3, which can be actuated by the hydraulic equipment of the excavator.
  • the excavator bucket 5 is attached to the illustrated ends of these supports 2 and 3 with the aid of a fastening device 4.
  • the fastening device 4 essentially consists of a gripping device 6 and a safety device 7.
  • the safety device 7 is attached to the vessel 8 of the excavator bucket 5 in the example shown, while the gripping device 6 is articulated on the supports 2 and 3 of the boom 1.
  • the safety gear 7 has two side walls 9 and 10 and a rear wall 11 connecting them. The lower and front edges of these walls 9 to 11 are connected to the vessel 8 of the spoon 5, for example by welding.
  • the safety device 7 is open at the top so that it can accommodate the gripping device 6.
  • a bolt 12 extends between the side walls 9 and 10 of the catching device 7 and, depending on the circumstances, can also be hollow.
  • the rear wall 11 of the safety device 7 has an inner wall 13 (FIG. 2) and a support wall 14. Are below these walls 13 and 14 are welded to the vessel 8 of the spoon 5. The upper edges of these walls 13 and 14 are welded together.
  • the inside of the inner wall 13 is provided with two protruding lugs 15 and 16 which extend into the interior of the safety device 7.
  • the contour of these lugs 15 and 16 initially has a downwardly bent section 17, to which a practically straight lower section 18 of the contour of the lugs 15 and 16 is connected, which in turn merges into a tapering section 19 , with which the contour of the nose 15 or 16 ends below.
  • the gripping device 6 has a hollow base body 20 which contains a base 21 and an oblique rear wall 22 which adjoins this at the rear.
  • the front wall 23 of the hollow base body 20 has the shape of a ring segment in cross section, so that it has a recess 24 on its outside.
  • the bolt 12 of the safety device 7 comes to rest in this recess when the gripping device 6 is located in the safety device 7.
  • the rear wall 22 of the base body 20 is provided with openings 25 and 26, which in the example shown have the shape of slots. These slots 25 and 26 also extend partially in the bottom 21 of the base body 20.
  • the lugs 15 and 16 pass through these openings 25 and 26 when the gripping device 6 moves into the catching device 7.
  • the position of the lugs 15 and 16 in relation to the rear wall 22 can be seen clearly from FIG. 2.
  • the straight section 18 of the contour of the lugs 15 and 16 forms an acute angle with the bottom of the base body 21.
  • a locking mechanism 30 is located in the interior of the green body 20.
  • This mechanism 30 contains a wedge 31 which is displaceable on the bottom 21 of the base body 20 until it comes under the lugs 15 and 16.
  • the displacement of the wedge 31 is caused by a hydraulic cylinder 32 which is located in the base body 20.
  • One end of this cylinder 32 is connected to the wedge 31 and the other end thereof is attached to a plate 29 which is erected on the bottom 21 of the hollow body 20.
  • This hydraulic cylinder 32 can be operated from the cab of the excavator.
  • the hollow base body 20 is connected to a cover plate 33, for example by welding.
  • Tabs 34 and 35 which have openings 36 and 37, are fastened to the top of this plate 33.
  • bolts (not shown - 'represents 7) pass through which the gripping device 6 is articulated to the boom 1.
  • the boom 1 is constantly in connection with the gripping device 6.
  • This sheet metal strip 38 causes the front side wall 23 of the gripping device 6 to lie snugly on the bolt 12 of the catching device 7. When worn, the wear plate 38 is replaced by another.
  • the boom 1 is moved relative to the stationary bucket 5 until the front wall 23 of the base body 20 rests on the bolt 12 with its recess 24. If this is not immediately possible, one can press the boom 1 on the walls 9 to 11 or on the bolt 12 until the spoon 5 assumes a more favorable position for moving the gripping device 6 into the catching device 7. After the correct position between the devices 6 and 7 mentioned has been reached, the is lowered Subcarrier 3 so that the rear part of the gripping device 6 can also move into the catching device 7.
  • the lugs 15 and 16 pass through the openings 25 and 26 until they are located inside the base body 20, as can be seen from FIG. 2.
  • the hydraulic cylinder 32 can be actuated, after which it presses the wedge 31 between the straight and inclined portion 18 of the lugs 15 and 16 and the bottom 21 of the base body 20.
  • the wedge 31 pushes the lugs 15 and 16 upward, so that the walls 13 and 22 slide on one another with the interposition of the sheet 38. Since these walls 13 and 22 run obliquely, the front wall 23 of the gripping device 6 is pressed against the bolt 12 so that they rest snugly on one another.
  • the two devices 6 and 7 thus come into contact only in the area of the bolt 12 and the front wall 23 and in the area of the rear walls 13 and 22.
  • the spoon 5 is first placed on the floor.
  • the hydraulic cylinder 32 is then actuated in such a way that the wedge 31 is withdrawn. This clears the noses 15 and 16. Now you can lift the auxiliary carrier 2 and the gripping device 6 leaves the safety device 7 of the bucket 5. Then you can drive to another bucket 5 or to another excavator tool, which is provided with the safety device 7 described, and the boom 1 in here connect in the manner already described.
  • This locking mechanism 40 also contains a wedge 41 and an actuating device 42 for the wedge 41.
  • the design of the wedge 41 can be seen better from FIG. 4, in which the section IV-IV from FIG. 3 is shown.
  • the wedge 41 has a middle, higher section 43 which is located between the lugs 15 and 16 of the safety device 7. These lugs 15 and 16 pass through the slot-shaped openings 25 and 26 in the rear wall 22 of the hollow body 20 and they protrude into the interior of this hollow body 20 of the gripping device 6.
  • a lower section 44 and 45 of the wedge 41 each adjoins the middle section 43 of the wedge. These lower parts 44 and 45 of the wedge 41 practically extend to the side walls 46 and 47 of the hollow body 20, which is closed at the bottom by the base plate 21 and at the top by the cover plate 33.
  • a horizontally arranged holding plate 48 rests on the wedge 41, the end part of which lying in the region of the wedge 41 is provided with a standing plate 49.
  • This standing plate 49 inter alia prevents the holding plate 48 from being able to rise under the action of the loaded wedge 41.
  • the other end of the holding plate 48 is fastened by means of screws 50 to stops 51 and 52, of which only the rear stop 51 is shown in FIG. 3.
  • a recess 54 of approximately circular cross section is made, the purpose of which will be described.
  • a threaded bore 55 then adjoins this depression 54 in the wedge 41, so that the wedge 41 has a horizontally running and continuous opening.
  • the front lower side 56 of the wedge 41 is chamfered so that it Part 56 of the wedge 41 can not rest on the rear wall 22 of the hollow body 20 if it should happen that the wedge 41 moves too far to the left.
  • the top 57 and 58 of the respective lower flank 44 and 45 of the wedge 41 forms an acute angle with the underside of the wedge 41 and these surfaces 57 and 58 of the lateral parts 44 and 45 of the wedge 41 are in engagement with the underside 18 of the lugs 15 and 16 of the safety device 7.
  • a helical compression spring 60 is mounted between the abovementioned stops 51 and 52, which are located on the base plate 21 of the hollow body 20.
  • This spring 60 presses at one end onto the rear side of the wedge 41 and at the other end it is supported on the vertical plate 29, which in turn is fastened on the base plate 21 and on the front wall 23 of the hollow body 20.
  • the abovementioned stops 51 and 52 prevent the spring 60 from moving to one side or the other.
  • the holding plate 48 which extends over a considerable part of the spring 60, also has the task of preventing the spring 60 from escaping upwards. As can be seen above all from FIG. 3, the position of the standing plate 49 with respect to the holding plate 48 is ensured by means of triangular standing plates 61 and 62.
  • the support wall 14 and the inner wall 13 of the safety device 7 and the rear wall 22 of the hollow body 20 are provided with openings 63, 64 and 65.
  • the openings 63 and 64 in the walls 14 and 13 of the safety device 7 are designed as U-shaped cuts made from above, as can be seen from the perspective illustration in FIG. 1.
  • the opening 65 in the rear wall of the hollow body 20 is approximately circular and its axis coincides with the axis of the threaded bore 55 in the wedge 41.
  • a screw 66 passes through, the diameter of the bolt of this screw 66 being smaller than the diameter of the opening 65 mentioned.
  • the screw 66 which advantageously has a head with a hexagon socket, rotates freely in this opening 65 leaves.
  • the head of the screw 66 lies in the region of the two openings 63 and 64 mentioned.
  • the head goes Head of screw 66 through the upper open part of openings 63 and 64.
  • the bolt of the screw 66 is provided on the side of the rear wall 22 opposite the head with two lock nuts 67, which are located at a distance from the inside of the rear wall 22, so that there is also play between the latter and the rear wall 22.
  • the consequence of this is that the screw 66 in the opening 65 can also be moved a little in the axial direction.
  • Under the head of the screw 66 there may be a locking edge washer (not shown) that prevents the screw 66 from becoming loose during the operation of the excavator.
  • the lock nuts 67 are glued to one another with the aid of a suitable adhesive so that they cannot change their position on the screw 66 during the operation of the excavator.
  • the screw 66 is actuated in such a way that the wedge 41 is as far to the right as possible, at least to the extent that the wedge 41 does not collide with the lugs 15 and 16 when these enter the gripping device 6.
  • the screw 66 By turning the screw 66, the wedge 41 is pressed against the spring 60 so that it is tensioned. Especially in this phase, the stops 51 and 52 and the holding plate 48 effective.
  • the mentioned displacement of the wedge 41 is possible thanks to the lock nuts 67 on the screw 66.
  • the wedge 41 must be brought into engagement with the lugs 15 and 16. This is achieved by turning screw 66 in the opposite direction. Now the screw 66 pulls the wedge 41 to the left and the spring 60 relaxes in the process. If the wedge 41 is sufficiently far to the left, then the upper sides 56 and 57 of the side parts 44 and 45 of the wedge 41 come with the lower sides 18 of the lugs 15 and 16 engages, whereby a firm connection between the gripping device 6 and the catching device 7 is established. So that this connection does not become looser but rather tighter during the operation of the excavator, the wedge 41 is still under the action of the compression spring 60.
  • the engagement between the named parts of the fastening device becomes due to the action of the spring 60 on the wedge 41 still improved.
  • the aforementioned locking edge disc prevents, as has already been mentioned, the screw 66 from rotating during the operation of the excavator.
  • the recess 57 in the front part of the wedge 41 can accommodate the lock nuts 67 if the wedge 41 should move so far to the left.
  • a profile piece 70 and 71 (FIG. 1) is fastened to the rear wall of the spoon 8 on each side of the safety gear 7, by means of which the side walls 9 and 10 of the safety device 7 are supported. These profile pieces 70 and 71 distribute the forces acting on the catching device 7 from the gripping device 6 over the entire width of the spoon 8, so that the location of the direct connection between the catching device and the spoon is less mechanically stressed.
  • the mentioned profile piece 70 and 71 have in cross-section the shape of an open U, in which one leg is shorter than the other leg of the same. The shorter leg of the profile pieces 70 and 71 is attached to the edge of the excavator bucket 8, while the longer leg adjoins the rear wall of the bucket 8.

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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)
  • Shovels (AREA)
  • Surgical Instruments (AREA)
  • Toys (AREA)

Abstract

1. Excavating machine having a bucket scoop (5) attachable to a boom (1), an attachment device (6) with a hollow body (20), a trap device (7) for receiving the attachment device (6) where by one of these devices (6, 7 resp.) is connected with the boom (1), bucket scoop (5) respectively, a fixed jaw (15, 16 resp.) belonging to the trap device (7) and passing through an opening (25, 26 resp.) into the hollow body (20), a locking mechanismus (30 ; 40 resp.) placed in the hollow body (20) and provided with a wedge (31 ; 41 resp.) movable by means of a control mechanismus (32 ; 42 resp.) into a space between the fixed jaw (15, 16 resp.) and the base plate (21) of the hollow body, whereby the trap device (7) is provided with a projecting part (12) which is placed in the front region of the trap device (7) and which can be thrown into engagement with the front wall (23) of the hollow body (20), wherein the rear wall (22) of the hollow body (20) is inclined with respect to the base plate (21) of the holls body (20), the trap device is provided with a wall (13) which is arranged practically in parallel to the rear wall (22) of the hollow body (20) and wherein the fixed jaw (15, 16 resp.) is placed on the interior side of the inclined wall (13) belonging to the trap device (7).

Description

Die vorliegende Erfindung betrifft einen Bagger mit einem Ausleger und einem am Ausleger angebrachten Löffel.The present invention relates to an excavator having a boom and a bucket attached to the boom.

Bei Baggern der genannten Art erfolgt der Anschluss des Löffels an den Ausleger in der Regel so, dass der Ausleger und der Löffel Oesen aufweisen, die sich in Uebereinstimmung bringen lassen. In dieser Lage werden dann Bolzen durch die Oesen hindurchgesteckt.In the case of excavators of the type mentioned, the connection of the bucket to the boom is usually carried out in such a way that the boom and the bucket have eyes that can be matched. In this position, bolts are then inserted through the eyelets.

Diese Art von Anschluss des Löffels an den Ausleger hat einige Nachteile. Der Löffel weist normalerweise ein beträchtliches Gewicht auf, so dass man mit dem Ausleger und nur mit dem Ausleger manövrieren kann, damit die Oesen in die genannte Uebereinstimmung gelangen. Dies kann eine zeitraubende Arbeit sein. Die Passung zwischen dem Bolzen und den Oesen darf nicht sehr knapp bemessen sein, denn sonst würde man die Bolzen kaum in die Oesen eintreiben können. Wenn zwischen dem Bolzen und den Oesen ein grösseres Spiel besteht, dann kann man zwar den Bolzen leicht in die Oesen einführen, es ergibt sich jedoch ein anderer Nachteil. Denn in einem solchen Fall schlagen sich die Oesen und die Bolzen verhältnismässig rasch aus. Ferner ist die Handhabung der genannten Bolzen um so umständlicher, je grösser diese sind. Es könnten noch weitere Nachteile einer solchen Anschlusseinrichtung für Baggerlöffel genannt werden.This type of connection of the bucket to the boom has some disadvantages. The bucket normally has a considerable weight, so that you can maneuver with the boom and only with the boom, so that the eyelets come into conformity with the above. This can be a time consuming job. The fit between the bolt and the eyelets must not be very tight, otherwise the bolts could hardly be driven into the eyelets. If there is a greater play between the pin and the eyelets, then it is easy to insert the pin into the eyelets, but there is another disadvantage. In such a case, the eyelets and the bolts knock out relatively quickly. Furthermore, the handling of the bolts mentioned is more complicated the larger they are. Further disadvantages of such a connection device for excavator buckets could also be mentioned.

Die Aufgabe der vorliegenden Erfindung ist es, den Bagger so zu verbessern, dass er die genannten Nachteile nicht aufweist.The object of the present invention is to improve the excavator so that it does not have the disadvantages mentioned.

Diese Aufgabe wird beim Bagger der eingangs genannten Art erfindungsgemäss so gelöst, wie dies im kennzeichnenden Teil des Anspruchs 1 definiert ist.This object is achieved according to the invention in the excavator of the type mentioned at the outset, as in the characterizing Part of claim 1 is defined.

Nachstehend werden Ausführungsbeispiele der vorliegenden Erfindung anhand der beiliegenden Zeichnungen näher erläutert. Es zeigt:

  • Fig. 1 eine perspektivische Ansicht der Einrichtung zum Anschliessen eines Baggerlöffels,
  • Fig. 2 im Längsschnitt eine erste Ausführungsform der Einrichtung nach Fig. 1,
  • Fig. 3 im Längsschnitt eine zweite Ausführungsform der Einrichtung nach Fig. 1 und
  • Fig. 4 den Schnitt IV-IV aus Fig. 3.
Exemplary embodiments of the present invention are explained in more detail below with reference to the accompanying drawings. It shows:
  • 1 is a perspective view of the device for connecting an excavator bucket,
  • 2 shows a longitudinal section of a first embodiment of the device according to FIG. 1,
  • Fig. 3 in longitudinal section a second embodiment of the device according to Fig. 1 and
  • 4 shows the section IV-IV from FIG. 3.

Der Ausleger 1 des Baggers enthält einen Hauptträger 2 und einen Hilfsträger 3, die durch die hydraulische Ausrüstung des Baggers betätigbar sind. An den dargestellten Enden dieser Träger 2 und 3 ist mit Hilfe einer Befestigungseinrichtung 4 der Baggerlöffel 5 angebracht. Die Befestigungseinrichtung 4 besteht im wesentlichen aus einer Greifvorrichtung 6 und aus einer Fangvorrichtung 7. Die Fangvorrichtung 7 ist im dargestellten Beispiel am Gefäss 8 des Baggerlöffels 5 angebracht, während die Greifvorrichtung 6 an den Trägern 2 und 3 des Auslegers 1 angelenkt ist.The boom 1 of the excavator contains a main carrier 2 and an auxiliary carrier 3, which can be actuated by the hydraulic equipment of the excavator. The excavator bucket 5 is attached to the illustrated ends of these supports 2 and 3 with the aid of a fastening device 4. The fastening device 4 essentially consists of a gripping device 6 and a safety device 7. The safety device 7 is attached to the vessel 8 of the excavator bucket 5 in the example shown, while the gripping device 6 is articulated on the supports 2 and 3 of the boom 1.

Die Fangvorrichtung 7 weist zwei Seitenwände 9 und 10 sowie eine diese verbindende Hinterwand 11 auf. Die unteren und vorderen Kanten dieser Wände 9 bis 11 sind am Gefäss 8 des Löffels 5 angeschlossen, beispielsweise durch Schweissen. Oben ist die Fangvorrichtung 7 offen, damit sie die Greifvorrichtung 6 aufnehmen kann. Vorne erstreckt sich zwischen den Seitenwänden 9 und 10 der Fangvorrichtung 7 ein Bolzen 12, der je nach Umständen auch hohl sein kann.The safety gear 7 has two side walls 9 and 10 and a rear wall 11 connecting them. The lower and front edges of these walls 9 to 11 are connected to the vessel 8 of the spoon 5, for example by welding. The safety device 7 is open at the top so that it can accommodate the gripping device 6. A bolt 12 extends between the side walls 9 and 10 of the catching device 7 and, depending on the circumstances, can also be hollow.

Die Hinterwand 11 der Fangvorrichtung 7 weist eine Innenwand 13 (Fig. 2) sowie eine Stützwand 14 auf. Unten sind diese Wände 13 und 14 auf dem Gefäss 8 des Löffels 5 angeschweisst. Die oberen Kanten dieser Wände 13 und 14 sind miteinander verschweisst. Die Innenseite der Innenwand 13 ist mit zwei abstehenden Nasen 15 und 16 versehen, die sich in das Innere der Fangvorrichtung 7 erstrecken. Die Kontur dieser Nasen 15 und 16 (Fig. 2) weist oben zunächst einen nach unten gebogenen Abschnitt 17 auf, an den sich ein praktisch geradliniger unterer Abschnitt 18 der Kontur der Nase 15 bzw. 16 anschliesst, der seinerseits in einen auslaufenden Abschnitt 19 übergeht, mit dem die Kontur der Nase 15 bzw. 16 unten endet.The rear wall 11 of the safety device 7 has an inner wall 13 (FIG. 2) and a support wall 14. Are below these walls 13 and 14 are welded to the vessel 8 of the spoon 5. The upper edges of these walls 13 and 14 are welded together. The inside of the inner wall 13 is provided with two protruding lugs 15 and 16 which extend into the interior of the safety device 7. The contour of these lugs 15 and 16 (FIG. 2) initially has a downwardly bent section 17, to which a practically straight lower section 18 of the contour of the lugs 15 and 16 is connected, which in turn merges into a tapering section 19 , with which the contour of the nose 15 or 16 ends below.

Die Greifvorrichtung 6 weist einen hohlen Grundkörper 20 auf, der einen Boden 21 und eine sich hinten an diesen anschliessende, schräge Hinterwand 22 enthält. Die vordere Wand 23 des hohlen Grundkörpers 20 hat im Querschnitt die Form eines Ringsegmentes, so dass sie an ihrer Aussenseite eine Ausnehmung 24 aufweist. In diese Ausnehmung kommt der Bolzen 12 der Fangvorrichtung 7 zu liegen, wenn sich die Greifvorrichtung 6 in der Fangvorrichtung 7 befindet.The gripping device 6 has a hollow base body 20 which contains a base 21 and an oblique rear wall 22 which adjoins this at the rear. The front wall 23 of the hollow base body 20 has the shape of a ring segment in cross section, so that it has a recess 24 on its outside. The bolt 12 of the safety device 7 comes to rest in this recess when the gripping device 6 is located in the safety device 7.

Die Hinterwand 22 des Grundkörpers 20 ist mit Oeffnungen 25 und 26 versehen, die im dargestellten Beispiel die Form von Schlitzen haben. Diese Schlitze 25 und 26 erstrecken sich teilweise auch noch im Boden 21 des Grundkörpers 20. Durch diese Oeffnungen 25 und 26 gehen die Nasen 15 und 16 hindurch, wenn die Greifvorrichtung 6 in die Fangvorrichtung 7 hineinfährt. Die Lage der Nasen 15 und 16 in bezug auf die Hinterwand 22 ist aus Fig. 2 gut ersichtlich. Der geradlinige Abschnitt 18 der Kontur der Nasen 15 und 16 bildet einen spitzen Winkel mit dem Boden des Grundkörpers 21.The rear wall 22 of the base body 20 is provided with openings 25 and 26, which in the example shown have the shape of slots. These slots 25 and 26 also extend partially in the bottom 21 of the base body 20. The lugs 15 and 16 pass through these openings 25 and 26 when the gripping device 6 moves into the catching device 7. The position of the lugs 15 and 16 in relation to the rear wall 22 can be seen clearly from FIG. 2. The straight section 18 of the contour of the lugs 15 and 16 forms an acute angle with the bottom of the base body 21.

Im Inneren des Grunkörpers 20 befindet sich ein Verriegelungsmechanismus 30. Dieser Mechanismus 30 enthält einen Keil 31, der auf dem Boden 21 des Grundkörpers 20 verschiebbar ist, bis er unter die Nasen 15 und 16 gelangt. Die Verschiebung des Keiles 31 ist durch einen Hydraulikzylinder 32 verursacht, der sich im Grundkörper 20 befindet. Das eine Ende dieses Zylinders 32 ist an den Keil 31 angeschlossen und das andere Ende desselben ist an einer Platte 29 befestigt, die auf dem Boden 21 des Hohlkörpers 20 aufgerichtet ist. Dieser Hydraulikzylinder 32 ist vom Führerhaus des Baggers aus betätigbar.A locking mechanism 30 is located in the interior of the green body 20. This mechanism 30 contains a wedge 31 which is displaceable on the bottom 21 of the base body 20 until it comes under the lugs 15 and 16. The displacement of the wedge 31 is caused by a hydraulic cylinder 32 which is located in the base body 20. One end of this cylinder 32 is connected to the wedge 31 and the other end thereof is attached to a plate 29 which is erected on the bottom 21 of the hollow body 20. This hydraulic cylinder 32 can be operated from the cab of the excavator.

Oben ist der hohle Grundkörper 20 an eine Deckplatte 33, beispielsweise durch Schweissen, angeschlossen. Auf der Oberseite dieser Platte 33 sind Laschen 34 und 35 befestigt, die Oeffnungen 36 und 37 aufweisen. Durch diese Oeffnungen 36 und 37 und durch entsprechende Oeffnungen in der Endpartie der Träger 2 und 3 gehen Bolzen (nicht darge--'stellt7) hindurch, mittels welcher die Greifvorrichtung 6 an den Ausleger 1 angelenkt ist. Der Ausleger 1 steht ständig in Verbindung mit der Greifvorrichtung 6.At the top, the hollow base body 20 is connected to a cover plate 33, for example by welding. Tabs 34 and 35, which have openings 36 and 37, are fastened to the top of this plate 33. Through these openings 36 and 37 and through corresponding openings in the end section of the beams 2 and 3, bolts (not shown - 'represents 7) pass through which the gripping device 6 is articulated to the boom 1. The boom 1 is constantly in connection with the gripping device 6.

Zwischen der Hinterwand 22 der Greifvorrichtung 6 und der Innenwand 13 der Fangvorrichtung 7 befindet sich oben ein Blechstreifen 38, der als Verschleissblech dient. Dieser Blechstreifen 38 verursacht, dass die vordere Seitenwand 23 der Greifvorrichtung 6 auf dem Bolzen 12 der Fangvorrichtung 7 satt aufliegt. Wenn abgenützt, wird das Verschleissblech 38 durch ein anderes ersetzt.Between the rear wall 22 of the gripping device 6 and the inner wall 13 of the catching device 7 there is a metal strip 38 at the top, which serves as a wear plate. This sheet metal strip 38 causes the front side wall 23 of the gripping device 6 to lie snugly on the bolt 12 of the catching device 7. When worn, the wear plate 38 is replaced by another.

Wenn der Löffel 5 an den Ausleger angeschlossen werden soll, dann bewegt man den Ausleger 1 gegenüber dem stillstehenden Löffel 5 bis die vordere Wand 23 des Grundkörpers 20 mit ihrer Ausnehmung 24 auf dem Bolzen 12 aufliegt. Falls dies nicht sofort möglich ist, so kann man mit dem Ausleger 1 auf die Wände 9 bis 11 oder auf den Bolzen 12 so drücken, bis der Löffel 5 eine zum Einfahren der Greifvorrichtung 6 in die Fangvorrichtung 7 günstigere Lage einnimmt. Nachdem die richtige Lage zwischen den genannten Vorrichtungen 6 und 7 erreicht worden ist, senkt man den Hilfsträger 3 so, dass auch die hintere Partie der Greifvorrichtung 6 in die Fangvorrichtung 7 einfahren kann. Hierbei gehen die Nasen 15 und 16 durch die Oeffnungen 25 und 26 hindurch, bis sie sich im Inneren des Grundkörpers 20 befinden, wie dies aus Fig. 2 ersichtlich ist. Jetzt kann der Hydraulikzylinder 32 betätigt werden, wonach er den Keil 31 zwischen die geradlinige und geneigt verlaufende Partie 18 der Nasen 15 und 16 und den Boden 21 des Grundkörpers 20 eindrückt. Hierbei stösst der Keil 31 die Nasen 15 und 16 aufwärts, so dass die Wände 13 und 22 unter der Zwischenlage des Bleches 38 aufeinander gleiten. Da diese Wände 13 und 22 schräg verlaufen, wird hierbei die Frontwand 23 der Greifvorrichtung 6 gegen den Bolzen 12 angedrückt, so dass diese satt aufeinander aufliegen. Die Berührung zwischen den zwei genannten Vorrichtungen 6 und 7 erfolgt somit nur im Bereich des Bolzens 12 und der Frontwand 23 sowie im Bereich der hinteren Wände 13 und 22.If the bucket 5 is to be connected to the boom, then the boom 1 is moved relative to the stationary bucket 5 until the front wall 23 of the base body 20 rests on the bolt 12 with its recess 24. If this is not immediately possible, one can press the boom 1 on the walls 9 to 11 or on the bolt 12 until the spoon 5 assumes a more favorable position for moving the gripping device 6 into the catching device 7. After the correct position between the devices 6 and 7 mentioned has been reached, the is lowered Subcarrier 3 so that the rear part of the gripping device 6 can also move into the catching device 7. Here, the lugs 15 and 16 pass through the openings 25 and 26 until they are located inside the base body 20, as can be seen from FIG. 2. Now the hydraulic cylinder 32 can be actuated, after which it presses the wedge 31 between the straight and inclined portion 18 of the lugs 15 and 16 and the bottom 21 of the base body 20. Here, the wedge 31 pushes the lugs 15 and 16 upward, so that the walls 13 and 22 slide on one another with the interposition of the sheet 38. Since these walls 13 and 22 run obliquely, the front wall 23 of the gripping device 6 is pressed against the bolt 12 so that they rest snugly on one another. The two devices 6 and 7 thus come into contact only in the area of the bolt 12 and the front wall 23 and in the area of the rear walls 13 and 22.

Wenn der Löffel 5 vom Ausleger 1 abgenommen werden soll, dann stellt man den Löffel 5 zunächst auf dem Boden ab. Dann betätigt man den Hydraulikzylinder 32 derart, dass der Keil 31 zurückgezogen wird. Dadurch werden die Nasen 15 und 16 frei. Nun kann man den Hilfsträger 2 hochheben und die Greifvorrichtung 6 verlässt die Fangvorrichtung 7 des Löffels 5. Hiernach kann man zu einem anderen Löffel 5 bzw. zu einem anderen Baggerwerkzeug fahren, das mit der beschriebenen Fangvorrichtung 7 versehen ist, und den Ausleger 1 hier in der bereits beschriebenen Weise anschliessen.If the spoon 5 is to be removed from the boom 1, the spoon 5 is first placed on the floor. The hydraulic cylinder 32 is then actuated in such a way that the wedge 31 is withdrawn. This clears the noses 15 and 16. Now you can lift the auxiliary carrier 2 and the gripping device 6 leaves the safety device 7 of the bucket 5. Then you can drive to another bucket 5 or to another excavator tool, which is provided with the safety device 7 described, and the boom 1 in here connect in the manner already described.

Wie ersichtlich, erfolgt die Auswechslung eines Baggerwerkzeuges mühelos und sehr schnell. Dabei kann bei einer solchen Verbindungseinrichtung kein Ausschlagen von Oesen und Bolzen erfolgen. Der Ersatz des Verschleissbleches ist eine sehr einfache Angelegenheit und ausserdem erfolgt ein solcher Ersatz noch vor dem Anschluss des Baggerwerkzeuges.As can be seen, the replacement of an excavator tool is effortless and very quick. With such a connecting device, eyes and bolts cannot be knocked out. The replacement of the wear plate is a very simple matter and, moreover, such a replacement takes place before the excavator tool is connected.

In Fig. 3 und 4 ist eine weitere Ausführungsform des Verriegelungsmechanismus 40 der vorliegenden Befestigungseinrichtung 4 dargestellt. Auch dieser Verriegelungsmechanismus 40 enhthält einen Keil 41 und eine Betätigungsvorrichtung 42 für den Keil 41. Die Ausbildung des Keiles 41 ist aus Fig. 4 besser ersichtlich, in der der Schnitt IV-IV aus Fig. 3 dargestellt ist. Der Keil 41 weist eine mittlere, höhere Partie 43 auf, die sich zwischen den Nasen 15 und 16 der Fangvorrichtung 7 befindet. Diese Nasen 15 und 16 gehen durch die schlitzförmigen Oeffnungen 25 und 26 in der Hinterwand 22 des Hohlkörpers 20 hindurch und sie ragen in das Innere dieses Hohlkörpers 20 der Greifvorrichtung 6 hinein. Je eine niedrigere Partie 44 und 45 des Keiles 41 schliesst sich seitlich an die mittlere Partie 43 des Keiles an. Diese niedrigeren Partien 44 und 45 des Keiles 41 erstrecken sich praktisch bis zu den Seitenwänden 46 und 47 des Hohlkörpers 20, der unten durch die Grundplatte 21 und oben durch die Deckplatte 33 abgeschlossen ist.3 and 4, a further embodiment of the locking mechanism 40 of the present fastening device 4 is shown. This locking mechanism 40 also contains a wedge 41 and an actuating device 42 for the wedge 41. The design of the wedge 41 can be seen better from FIG. 4, in which the section IV-IV from FIG. 3 is shown. The wedge 41 has a middle, higher section 43 which is located between the lugs 15 and 16 of the safety device 7. These lugs 15 and 16 pass through the slot-shaped openings 25 and 26 in the rear wall 22 of the hollow body 20 and they protrude into the interior of this hollow body 20 of the gripping device 6. A lower section 44 and 45 of the wedge 41 each adjoins the middle section 43 of the wedge. These lower parts 44 and 45 of the wedge 41 practically extend to the side walls 46 and 47 of the hollow body 20, which is closed at the bottom by the base plate 21 and at the top by the cover plate 33.

Auf dem Keil 41 liegt eine horizontal angeordnete Halteplatte 48 auf, deren im Bereich des Keiles 41 liegende Endpartie mit einer stehenden Platte 49 versehen ist. Diese stehende Platte 49 verhindert unter anderem, dass sich die Halteplatte 48 unter der Einwirkung des belasteten Keiles 41 anheben kann. Das andere Ende der Halteplatte 48 ist mit Hilfe von Schrauben 50 auf Anschlägen 51 und 52 befestigt, von welchen in Fig. 3 nur der hintere Anschlag 51 dargestellt ist.A horizontally arranged holding plate 48 rests on the wedge 41, the end part of which lying in the region of the wedge 41 is provided with a standing plate 49. This standing plate 49 inter alia prevents the holding plate 48 from being able to rise under the action of the loaded wedge 41. The other end of the holding plate 48 is fastened by means of screws 50 to stops 51 and 52, of which only the rear stop 51 is shown in FIG. 3.

In der Frontseite des mittleren Abschnittes 43 des Keiles 41 ist eine im Querschnitt etwa kreisförmige Vertiefung 54 ausgeführt, deren Zweck noch beschrieben wird. An diese Vertiefung 54 schliesst sich dann im Keil 41 eine Gewindebohrung 55 an, so dass der Keil 41 eine horizontal verlaufende und durchgehende Oeffnung aufweist. Die vordere untere Seite 56 des Keiles 41 ist abgeschrägt, damit diese Partie 56 des Keiles 41 auf die Hinterwand 22 des Hohlkörpers 20 nicht aufliegen kann, wenn es vorkommen sollte, dass sich der Keil 41 zu weit nach links verschiebt. Die Oberseite 57 bzw. 58 der jeweiligen niedrigeren Flanke 44 und 45 des Keiles 41 bildet mit der Unterseite des Keiles 41 einen spitzen Winkel und diese Oberflächen 57 und 58 der seitlichen Partien 44 und 45 des Keiles 41 stehen im Eingriff mit der Unterseite 18 der Nasen 15 und 16 der Fangvorrichtung 7.In the front of the central section 43 of the wedge 41, a recess 54 of approximately circular cross section is made, the purpose of which will be described. A threaded bore 55 then adjoins this depression 54 in the wedge 41, so that the wedge 41 has a horizontally running and continuous opening. The front lower side 56 of the wedge 41 is chamfered so that it Part 56 of the wedge 41 can not rest on the rear wall 22 of the hollow body 20 if it should happen that the wedge 41 moves too far to the left. The top 57 and 58 of the respective lower flank 44 and 45 of the wedge 41 forms an acute angle with the underside of the wedge 41 and these surfaces 57 and 58 of the lateral parts 44 and 45 of the wedge 41 are in engagement with the underside 18 of the lugs 15 and 16 of the safety device 7.

Zwischen den genannten Anschlägen 51 und 52, die sich auf der Bodenplatte 21 des Hohlkörpers 20 befinden, ist eine schraubenlinienförmige Druckfeder 60 gelagert. Diese Feder 60 drückt einerends auf die rückwärtige Seite des Keiles 41 und andernends ist sie auf der vertikalen Platte 29 abgestützt, die ihrerseits auf der Grundplatte 21 und an der vorderen Wand 23 des Hohlkörpers 20 befestigt ist. Die genannten Anschläge 51 und 52 verhindern, dass die Feder 60 auf die eine oder auf die andere Seite ausweicht. Die Halteplatte 48, die sich über einen beträchtlichen Teil der Feder 60 erstreckt, hat ferner die Aufgabe zu verhindern, dass die Feder 60 nach oben ausweicht. Wie vor allem aus Fig. 3 ersichtlich ist, ist die Lage der stehenden Platte 49 in bezug auf die Halteplatte 48 mit Hilfe von dreieckförmigen stehenden Platten 61 und 62 sichergestellt.A helical compression spring 60 is mounted between the abovementioned stops 51 and 52, which are located on the base plate 21 of the hollow body 20. This spring 60 presses at one end onto the rear side of the wedge 41 and at the other end it is supported on the vertical plate 29, which in turn is fastened on the base plate 21 and on the front wall 23 of the hollow body 20. The abovementioned stops 51 and 52 prevent the spring 60 from moving to one side or the other. The holding plate 48, which extends over a considerable part of the spring 60, also has the task of preventing the spring 60 from escaping upwards. As can be seen above all from FIG. 3, the position of the standing plate 49 with respect to the holding plate 48 is ensured by means of triangular standing plates 61 and 62.

Die Stützwand 14 und die Innenwand 13 der Fangvorrichtung 7 sowie die Hinterwand 22 des Hohlkörpers 20 sind mit Oeffnungen 63, 64 und 65 versehen. Die Oeffnungen 63 und 64 in den Wänden 14 und 13 der Fangvorrichtung 7 sind als U-förmige und von oben her geführte Einschnitte ausgeführt, wie dies aus der perspektivischen Darstellung in Fig. 1 ersichtlich ist. Die Oeffnung 65 in der Hinterwand des Hohlkörpers 20 ist etwa kreisförmig und deren Achse fällt mit der Achse der Gewindebohrung 55 im Keil 41 zusammen. Durch diese Oeffnung 65 in der Hinterwand 22 des Hohlkörpers 20 geht eine Schraube 66 hindurch, wobei der Durchmesser des Bolzens dieser Schraube 66 kleiner ist als der Durchmesser der genannten Oeffnung 65. Die Folge davon ist, dass sich die Schraube 66, die mit Vorteil einen Kopf mit Innensechskant aufweist, in dieser Oeffnung 65 frei drehen lässt.The support wall 14 and the inner wall 13 of the safety device 7 and the rear wall 22 of the hollow body 20 are provided with openings 63, 64 and 65. The openings 63 and 64 in the walls 14 and 13 of the safety device 7 are designed as U-shaped cuts made from above, as can be seen from the perspective illustration in FIG. 1. The opening 65 in the rear wall of the hollow body 20 is approximately circular and its axis coincides with the axis of the threaded bore 55 in the wedge 41. Through this opening 65 in the rear wall 22 of the hollow body 20th a screw 66 passes through, the diameter of the bolt of this screw 66 being smaller than the diameter of the opening 65 mentioned. The consequence of this is that the screw 66, which advantageously has a head with a hexagon socket, rotates freely in this opening 65 leaves.

Wenn sich die Greifvorrichtung 6 in der Fangvorrichtung 7 befindet, wie dies in Fig. 3 dargestellt ist, dann liegt der Kopf der Schraube 66 im Bereich der zwei genannten Oeffnungen 63 und 64. Beim Herausfahren aus der Fangvorrichtung 7 oder beim Einfahren in diese geht der Kopf der Schraube 66 durch die obere offene Partie der Oeffnungen 63 und 64 hindurch.If the gripping device 6 is located in the catching device 7, as shown in FIG. 3, then the head of the screw 66 lies in the region of the two openings 63 and 64 mentioned. When moving out of the catching device 7 or when entering it, the head goes Head of screw 66 through the upper open part of openings 63 and 64.

Der Bolzen der Schraube 66 ist auf der dem Kopf gegenüberliegenden Seite der Hinterwand 22 mit zwei Kontermuttern 67 versehen, die sich in einem Abstand von der Innenseite der Hinterwand 22 befinden, so dass auch zwischen diesen und der Hinterwand 22 ein Spiel besteht. Die Folge davon ist, dass sich die Schraube 66 in der Oeffnung 65 auch in axialer Richtung ein wenig verschieben lässt. Unter dem Kopf der Schraube 66 kann sich eine Sperrkantenscheibe befinden (nicht dargestellt), die verhindert, dass die Schraube 66 während des Betriebes des Baggers locker wird. Die Kontermuttern 67 sind mit Hilfe eines geeigneten Klebstoffes miteinander verklebt, damit sie während des Betriebes des Baggers ihre Lage auf der Schraube 66 nicht ändern können.The bolt of the screw 66 is provided on the side of the rear wall 22 opposite the head with two lock nuts 67, which are located at a distance from the inside of the rear wall 22, so that there is also play between the latter and the rear wall 22. The consequence of this is that the screw 66 in the opening 65 can also be moved a little in the axial direction. Under the head of the screw 66 there may be a locking edge washer (not shown) that prevents the screw 66 from becoming loose during the operation of the excavator. The lock nuts 67 are glued to one another with the aid of a suitable adhesive so that they cannot change their position on the screw 66 during the operation of the excavator.

Wenn die Greifvorrichtung 6 in die Fangvorrichtung 7 eingeschoben werden soll, dann wird die Schraube 66 so betätigt, dass sich der Keil 41 möglichst weit rechts befindet, und zwar zumindest so weit, dass der Keil 41 mit den Nasen 15 und 16 nicht kollidiert, wenn diese in die Greifvorrichtung 6 eintreten. Durch Drehen der Schraube 66 wird der Keil 41 gegen die Feder 60 gedrückt, so dass diese gespannt wird. Vor allem in dieser Phase sind die Anschläge 51 und 52 sowie die Halteplatte 48 wirksam. Die genannte Verschiebung des Keiles 41 ist dank den Kontermuttern 67 auf der Schraube 66 möglich.If the gripping device 6 is to be inserted into the catching device 7, the screw 66 is actuated in such a way that the wedge 41 is as far to the right as possible, at least to the extent that the wedge 41 does not collide with the lugs 15 and 16 when these enter the gripping device 6. By turning the screw 66, the wedge 41 is pressed against the spring 60 so that it is tensioned. Especially in this phase, the stops 51 and 52 and the holding plate 48 effective. The mentioned displacement of the wedge 41 is possible thanks to the lock nuts 67 on the screw 66.

Wenn sich die Greifvorrichtung 6 in der Fangvorrichtung 7 befindet, dann muss der Keil 41 mit den Nasen 15 und 16 in Eingriff gebracht werden. Dies erreicht man, indem man die Schraube 66 in umgekehrter Richtung dreht. Jetzt zieht die Schraube 66 den Keil 41 nach links und dabei entspannt sich die Feder 60. Wenn sich der Keil 41 ausreichend weit links befindet, dann gelangen die Oberseiten 56 und 57 der Seitenpartien 44 und 45 des Keiles 41 mit den Unterseiten 18 der Nasen 15 und 16 in Eingriff, wodurch eine feste Verbindung zwischen der Greiffvorrichtung 6 und der Fangvorrichtung 7 zustande kommt. Damit diese Verbindung während des Betriebes des Baggers nicht lockerer sondern eher fester wird, steht der Keil 41 weiterhin unter der Einwirkung der Druckfeder 60. Denn bei Erschütterungen des Baggerlöffels wird der Eingriff zwischen den genannten Teilen der Befestigungsvorrichtung wegen der Einwirkung der Feder 60 auf den Keil 41 noch verbessert. Die genannte Sperrkantenscheibe verhindert, wie dies bereits erwähnt worden ist, dass sich die Schraube 66 während des Betriebes des Baggers dreht. Die Ausnehmung 57 in der Frontpartie des Keiles 41 kann die Kontermuttern 67 aufnehmen, falls sich der Keil 41 so weit nach links verschieben sollte.If the gripping device 6 is in the catching device 7, then the wedge 41 must be brought into engagement with the lugs 15 and 16. This is achieved by turning screw 66 in the opposite direction. Now the screw 66 pulls the wedge 41 to the left and the spring 60 relaxes in the process. If the wedge 41 is sufficiently far to the left, then the upper sides 56 and 57 of the side parts 44 and 45 of the wedge 41 come with the lower sides 18 of the lugs 15 and 16 engages, whereby a firm connection between the gripping device 6 and the catching device 7 is established. So that this connection does not become looser but rather tighter during the operation of the excavator, the wedge 41 is still under the action of the compression spring 60. Because when the excavator spoon is shaken, the engagement between the named parts of the fastening device becomes due to the action of the spring 60 on the wedge 41 still improved. The aforementioned locking edge disc prevents, as has already been mentioned, the screw 66 from rotating during the operation of the excavator. The recess 57 in the front part of the wedge 41 can accommodate the lock nuts 67 if the wedge 41 should move so far to the left.

Zu den beiden Seiten der Fangvorrichtung 7 ist je ein Profilstück 70 und 71 (Fig. 1) auf der Hinterwand des Löffels 8 befestigt, durch welche die Seitenwände 9 und 10 der Fangvorrichtung 7 gestützt sind. Diese Profilstücke 70 und 71 verteilen die auf die Fangvorrichtung 7 von der Greifvorrichtung 6 einwirkenden Kräfte auf die ganze Breite des Löffels 8, so dass die Stelle der unmittelbaren Verbindung zwischen der Fangvorrichtung und dem Löffel weniger mechanisch beansprucht wird. Die genannten Profilstückes 70 und 71 haben im Querschnitt die Form von einem offenen U, bei dem ein Schenkel kürzer ist als der andere Schenkel desselben. Der kürzere Schenkel der Profilstücke 70 und 71 ist am Rande des Baggerlöffels 8 befestigt, während der längere Schenkel sich an die Hinterwand des Löffels 8 anschliesst.A profile piece 70 and 71 (FIG. 1) is fastened to the rear wall of the spoon 8 on each side of the safety gear 7, by means of which the side walls 9 and 10 of the safety device 7 are supported. These profile pieces 70 and 71 distribute the forces acting on the catching device 7 from the gripping device 6 over the entire width of the spoon 8, so that the location of the direct connection between the catching device and the spoon is less mechanically stressed. The mentioned profile piece 70 and 71 have in cross-section the shape of an open U, in which one leg is shorter than the other leg of the same. The shorter leg of the profile pieces 70 and 71 is attached to the edge of the excavator bucket 8, while the longer leg adjoins the rear wall of the bucket 8.

Claims (10)

1. Bagger mit einem Ausleger und einem am Ausleger angebrachten Löffel, dadurch gekennzeichnet, dass eine Einrichtung (4) zum Befestigen des Löffels (5) am Ausleger (1) vorgesehen ist, dass diese Einrichtung (4) eine Greifvorrichtung (6) aufweist, die an einem der genannten Teile (1 bzw. 5) des Baggers angeschlossen ist, und dass die genannte Einrichtung (4) ferner eine Fangvorrichtung (7) aufweist, die am anderen der genannten Baggerteile angeschlossen ist und zur Aufnahme der Greifvorrichtung (6) ausgebildet ist.1. Excavator with a boom and a bucket attached to the boom, characterized in that a device (4) for fastening the bucket (5) to the boom (1) is provided, that this device (4) has a gripping device (6), which is connected to one of said parts (1 or 5) of the excavator, and that said device (4) further comprises a safety device (7) which is connected to the other of said excavator parts and designed to receive the gripping device (6) is. 2. Bagger nach Anspruch 1, dadurch gekennzeichnet, dass die Greifvorrichtung (6) am Ausleger (1) und die Fangvorrichtung (7) am Gefäss (8) des Löffels (5) angeschlossen sind.2. Excavator according to claim 1, characterized in that the gripping device (6) on the boom (1) and the catching device (7) on the vessel (8) of the bucket (5) are connected. 3. Bagger nach Anspruch 1, dadurch gekennzeichnet, dass die Greifvorrichtung (6) einen hohlen Grundkörper (20) enthält, dass eine der Wände (23) dieses Grundkörpers (20) eine Ausnehmung (24) aufweist, dass die Fangvorrichtung (7) einen ersten vorspringenden Bestandteil (12) aufweist, dass dieser vorspringende Bestandteil (12) in der Ausnehmung (24) der Greifvorrichtung (6) Platz finden kann und dass die Fangvorrichtung (7) wenigstens einen zweiten Vorsprung, beispielsweise in Form einer Nase (15 bzw. 16), aufweist, der durch eine im hohlen Grundkörper (20) der Greifvorrichtung (6) ausgeführte Oeffnung (25 bzw. 26) hindurchgeht.3. Excavator according to claim 1, characterized in that the gripping device (6) contains a hollow base body (20), that one of the walls (23) of this base body (20) has a recess (24) that the safety gear (7) one First projecting component (12) has that this projecting component (12) can be accommodated in the recess (24) of the gripping device (6) and that the catching device (7) has at least a second projection, for example in the form of a nose (15 or 16), which passes through an opening (25 or 26) made in the hollow base body (20) of the gripping device (6). 4. Bagger nach Anspruch 1, dadurch gekennzeichnet, dass die Befestigungseinrichtung (4) mit einem Verriegelungsmechanismus (30 bzw. 40) für die zwei Hauptabschnitte (6,7) der Befestigungseinrichtung versehen ist.4. Excavator according to claim 1, characterized in that the fastening device (4) is provided with a locking mechanism (30 or 40) for the two main sections (6, 7) of the fastening device. 5. Bagger nach Anspruch 4, dadurch gekennzeichnet, dass der Verriegelungsmechanismus (30) sich im Inneren des hohlen Körpers (20) der Greifvorrichtung (6) befindet, dass dieser Mechanismus (30) einen Keil (31 bzw. 41) sowie eine Betätigungsvorrichtung (28 bzw. 42) für diesen Keil enthält, und dass der Keil derart verschiebbar ist, dass er zwischen die Nase (15 bzw. 16) und den Boden (21) des hohlen Grundkörpers (20) gedrückt werden kann.5. Excavator according to claim 4, characterized in that the Locking mechanism (30) is inside the hollow body (20) of the gripping device (6), that this mechanism (30) contains a wedge (31 or 41) and an actuating device (28 or 42) for this wedge, and that the wedge is displaceable in such a way that it can be pressed between the nose (15 or 16) and the bottom (21) of the hollow base body (20). 6. Bagger nach Anspruch 5, dadurch gekennzeichnet, dass die Betätigungvorrichtung (28) für den Keil (31) einen an den Keil (31) angeschlossenen Hydraulikzylinder (32) enthält.6. Excavator according to claim 5, characterized in that the actuating device (28) for the wedge (31) contains a hydraulic cylinder (32) connected to the wedge (31). 7. Bagger nach Anspruch 5, dadurch gekennzeichnet, dass die Betätigungsvorrichtung (42) für den Keil (41) eine Feder (60) aufweist, dass das eine Ende dieser Feder (60) auf den Keil (41) einwirkt, dass im Keil (41) eine Gewindebohrung (55) ausgeführt ist, in der eine Schraube (66) eingeschraubt ist, dass die zum Keil (41) benachbarte Wand (22) der Greifvorrichtung (6) eine Oeffnung (65) mit glatter Wand aufweist und dass in dieser Oeffnung (65) der Bolzen der Schraube (66) mit Spiel gelagert ist.7. Excavator according to claim 5, characterized in that the actuating device (42) for the wedge (41) has a spring (60), that one end of this spring (60) acts on the wedge (41), that in the wedge ( 41) a threaded bore (55) is made, in which a screw (66) is screwed in that the wall (22) of the gripping device (6) adjacent to the wedge (41) has an opening (65) with a smooth wall and in this Opening (65) of the bolt of the screw (66) is mounted with play. 8. Bagger nach Anspruch 7, dadurch gekennzeichnet, dass der Keil (41) eine mittlere, erhöhte Partie (43) aufweist, in der die Gewindebohrung (55) ausgeführt ist, dass seitlich sich an diese mittlere Partie (43) je ein Seitenabschnitt (44 bzw. 45) des Keiles (41) anschliesst, dessen Oberseite (56 bzw. 57) mit der Unterseite des Keiles (41) einen spitzen Winkel bildet.8. Excavator according to claim 7, characterized in that the wedge (41) has a central, raised section (43) in which the threaded bore (55) is designed such that a side section (43) is attached to each side of this central section (43). 44 or 45) of the wedge (41) connects, the top (56 or 57) of which forms an acute angle with the underside of the wedge (41). 9. Bagger nach Anspruch 7, dadurch gekennzeichnet, dass über dem Keil (41) und über der auf diesen einwirkenden Feder (60) sich im Hohlkörper (20) eine Halteplatte (48) befindet, die einerends an Anschlägen (51 und 52) für die Feder (60) befestigt ist und die andernends über eine stehende Platte (49) gegen die Unterseite der Deckplatte (33) des Hohlkörpers (20) abgestützt ist.9. Excavator according to claim 7, characterized in that above the wedge (41) and above the spring (60) acting on it in the hollow body (20) is a holding plate (48) which at one end on stops (51 and 52) for the spring (60) is fastened and the other via a standing plate (49) against the underside of the cover plate (33) of the hollow body (20) is supported. 10. Bagger nach Anspruch 1, dadurch gekennzeichnet, dass sich zwischen der Hinterwand (22) des hohlen Grundkörpers (20) und der Fangvorrichtung (7) ein auswechselbares Verschleissblech (38) befindet.10. Excavator according to claim 1, characterized in that there is an interchangeable wear plate (38) between the rear wall (22) of the hollow base body (20) and the safety device (7).
EP84810450A 1983-09-15 1984-09-14 Excavator Expired EP0143074B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84810450T ATE37404T1 (en) 1983-09-15 1984-09-14 EXCAVATOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5024/83 1983-09-15
CH5024/83A CH661305A5 (en) 1983-09-15 1983-09-15 EXCAVATOR WITH AN OPTIONAL FIXING OF THE EXCAVATOR SPOON ON THE EXCAVATOR BOOM.

Publications (2)

Publication Number Publication Date
EP0143074A1 true EP0143074A1 (en) 1985-05-29
EP0143074B1 EP0143074B1 (en) 1988-09-21

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ID=4286629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84810450A Expired EP0143074B1 (en) 1983-09-15 1984-09-14 Excavator

Country Status (4)

Country Link
EP (1) EP0143074B1 (en)
AT (1) ATE37404T1 (en)
CH (1) CH661305A5 (en)
DE (1) DE3474173D1 (en)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195610A (en) * 1986-08-27 1988-04-13 Nikola Solaja A loader attachment
DE3701589A1 (en) * 1987-01-21 1988-08-04 Macmoter Spa Quick-action coupling
US4810162A (en) * 1985-07-10 1989-03-07 J. C. Bamford Excavators Limited Mounting a working implement
GB2208220A (en) * 1987-07-20 1989-03-15 Fritiof Hulden Quick-coupling device, e.g. for excavator bucket
AT389906B (en) * 1987-11-23 1990-02-26 Lehnhoff Hartstahl Ges M B H Quick-change device with automatic locking for implements on an excavator boom
EP0392972A2 (en) * 1989-04-12 1990-10-17 Pietro Pallotta Coupling for an excavator bucket
GB2239445A (en) * 1989-12-22 1991-07-03 Trevor Frederick Frank Hodges Coupling for excavator arm
WO1991011565A1 (en) * 1990-01-24 1991-08-08 Nagler Juergen Quick-action coupling for excavator attachment
GB2242927A (en) * 1990-03-07 1991-10-16 Martin James Aubrey Hydraulic coupling for use on an earth-working machine.
US5147173A (en) * 1991-06-03 1992-09-15 Caterpillar Inc. Coupling device
EP0511199A1 (en) * 1991-04-26 1992-10-28 WIMMER, Alois Quick coupling for connecting implements to an excavator
EP0555566A1 (en) * 1992-02-14 1993-08-18 ATLAS WEYHAUSEN GmbH Hydraulic coupling device to connect and disconnect the implement to an excavator
EP0569026A1 (en) * 1992-05-08 1993-11-10 Lehnhoff Hartstahl GmbH & Co. Quick coupling device
EP0594486A1 (en) * 1992-10-23 1994-04-27 Jean-Pierre Dorguin Quick coupling device for earthmoving machines
EP0616084A1 (en) * 1993-03-19 1994-09-21 TREVI BENNE S.r.l. Self-locking quick coupling for fitting buckets or the like to earth-movers
DE19507896A1 (en) * 1995-03-07 1995-10-26 Frank Von Wolff Quick change attachment with adaptor for dredger tools
AT403490B (en) * 1996-01-15 1998-02-25 Franz Winkelbauer CLUTCH DEVICE
US5727342A (en) * 1996-04-18 1998-03-17 Wain-Roy, Inc. Hydraulic latch pin assembly for coupling a tool to a construction equipment
FR2785952A1 (en) * 1998-11-12 2000-05-19 Alain Husson QUICK COUPLER FOR ATTACHING A TOOL AT THE END OF THE ARM OF A LOADER OR THE LIKE
FR2785951A1 (en) * 1998-11-12 2000-05-19 Alain Husson Quick-fit connector for implement such as bucket on end of manipulator arm has stirrup with aperture and locking plate engaging with hook
EP1033447A2 (en) * 1999-03-02 2000-09-06 Mantovanibenne S.r.l. A device for rapid tool coupling and release on tool arms.
EP1048790A2 (en) * 1999-02-23 2000-11-02 Metaalwarenfabriek A.P. Verachtert B.V. Connecting piece
US6431785B1 (en) 2000-06-05 2002-08-13 Wec Co. Direct pin quick coupler
FR2826028A1 (en) * 2001-06-19 2002-12-20 Klac Industrie Quick fastener for fixing tool to end of loader arm comprises two parts, one comprising shaft engaging hook forming open bearing, hook has extension piece and clamping part is inserted in space between it and shaft
US6688801B2 (en) * 2000-05-31 2004-02-10 Klac Industrie Quick fastening safety device for fixing a tool to the end of a loader arm or the like
EP1820906A1 (en) * 2006-02-21 2007-08-22 Fredy Stury AG Device with a replaceable tool
WO2008111917A1 (en) * 2007-03-13 2008-09-18 Jozef Bajec Quick coupling for changing excavator tools
EP2241680A1 (en) * 2009-04-17 2010-10-20 Morin Connecting apparatus, quick coupler and connecting assembly
DE102010034738A1 (en) 2009-08-21 2011-02-24 Perwein Baumaschinen-Systeme Gmbh Coupling device for fastening working device at excavator boom, has locking elements with front surfaces that comprise same inclination angle for forming parallel sliding faces, such that frictional tension between front surfaces is reduced
NO20093409A1 (en) * 2009-11-24 2011-05-25 Hardnor As Quick coupler for attaching a working tool to a machine
EP3048204A1 (en) 2015-01-21 2016-07-27 Fredi Stury AG Changing device for mounting on a hydraulic excavator
EP3165681A3 (en) * 2015-10-15 2017-08-16 J.C. Bamford Excavators Limited Quick hitch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402312B (en) * 1993-12-20 1997-04-25 Ferrotechnik Ges M B H Changing device for attachments of a mini excavator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963183A (en) * 1957-09-25 1960-12-06 Warner Swasey Co Material handling machines having boom with detachable tool
US3556323A (en) * 1968-12-23 1971-01-19 Damian M Heimmermann Quick-connect coupler for bucket on excavating machine
US3934738A (en) * 1974-04-01 1976-01-27 Wain-Roy, Inc. Tool connecting
DE3018831A1 (en) * 1979-05-16 1980-11-20 Wain Co Roy FASTENING DEVICE
NL7904335A (en) * 1979-06-01 1980-12-03 Bofors Nederland Implement coupling mechanism to excavator boom - has intermediate piece with clamping lug secured by wedge shaped bar
US4297074A (en) * 1980-01-07 1981-10-27 Ballinger Paul V Demountable interconnection
EP0058058A2 (en) * 1981-02-05 1982-08-18 Maroochy Shire Council Quick release and attachment assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963183A (en) * 1957-09-25 1960-12-06 Warner Swasey Co Material handling machines having boom with detachable tool
US3556323A (en) * 1968-12-23 1971-01-19 Damian M Heimmermann Quick-connect coupler for bucket on excavating machine
US3934738A (en) * 1974-04-01 1976-01-27 Wain-Roy, Inc. Tool connecting
DE3018831A1 (en) * 1979-05-16 1980-11-20 Wain Co Roy FASTENING DEVICE
NL7904335A (en) * 1979-06-01 1980-12-03 Bofors Nederland Implement coupling mechanism to excavator boom - has intermediate piece with clamping lug secured by wedge shaped bar
US4297074A (en) * 1980-01-07 1981-10-27 Ballinger Paul V Demountable interconnection
EP0058058A2 (en) * 1981-02-05 1982-08-18 Maroochy Shire Council Quick release and attachment assembly

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810162A (en) * 1985-07-10 1989-03-07 J. C. Bamford Excavators Limited Mounting a working implement
GB2195610A (en) * 1986-08-27 1988-04-13 Nikola Solaja A loader attachment
US4809449A (en) * 1986-08-27 1989-03-07 Nikola Solaja Loader attachment
GB2195610B (en) * 1986-08-27 1990-02-14 Nikola Solaja A loader attachment
DE3701589A1 (en) * 1987-01-21 1988-08-04 Macmoter Spa Quick-action coupling
GB2208220B (en) * 1987-07-20 1991-07-10 Fritiof Hulden A quick coupling assembly
GB2208220A (en) * 1987-07-20 1989-03-15 Fritiof Hulden Quick-coupling device, e.g. for excavator bucket
AT389906B (en) * 1987-11-23 1990-02-26 Lehnhoff Hartstahl Ges M B H Quick-change device with automatic locking for implements on an excavator boom
EP0392972A2 (en) * 1989-04-12 1990-10-17 Pietro Pallotta Coupling for an excavator bucket
EP0392972A3 (en) * 1989-04-12 1991-07-03 Pietro Pallotta Coupling for an excavator bucket
GB2239445A (en) * 1989-12-22 1991-07-03 Trevor Frederick Frank Hodges Coupling for excavator arm
US5350250A (en) * 1990-01-24 1994-09-27 Nagler Juergen Quick coupling of a front work attachment on excavators
WO1991011565A1 (en) * 1990-01-24 1991-08-08 Nagler Juergen Quick-action coupling for excavator attachment
GB2242927A (en) * 1990-03-07 1991-10-16 Martin James Aubrey Hydraulic coupling for use on an earth-working machine.
GB2242927B (en) * 1990-03-07 1993-12-22 Martin James Aubrey Earth-working machine
US5110254A (en) * 1990-03-07 1992-05-05 Aubrey Martin J Quick-release coupling for earthworking machines
EP0511199A1 (en) * 1991-04-26 1992-10-28 WIMMER, Alois Quick coupling for connecting implements to an excavator
WO1992021828A1 (en) * 1991-06-03 1992-12-10 Caterpillar Inc. Coupling device
US5147173A (en) * 1991-06-03 1992-09-15 Caterpillar Inc. Coupling device
EP0555566A1 (en) * 1992-02-14 1993-08-18 ATLAS WEYHAUSEN GmbH Hydraulic coupling device to connect and disconnect the implement to an excavator
EP0569026A1 (en) * 1992-05-08 1993-11-10 Lehnhoff Hartstahl GmbH & Co. Quick coupling device
DE4214569C2 (en) * 1992-05-08 2001-12-20 Lehnhoff Hartstahl Gmbh & Co Quick change device
EP0594486A1 (en) * 1992-10-23 1994-04-27 Jean-Pierre Dorguin Quick coupling device for earthmoving machines
FR2697302A1 (en) * 1992-10-23 1994-04-29 Dorguin Jean Pierre Quick coupling device for civil engineering and handling equipment.
EP0616084A1 (en) * 1993-03-19 1994-09-21 TREVI BENNE S.r.l. Self-locking quick coupling for fitting buckets or the like to earth-movers
DE19507896A1 (en) * 1995-03-07 1995-10-26 Frank Von Wolff Quick change attachment with adaptor for dredger tools
AT403490B (en) * 1996-01-15 1998-02-25 Franz Winkelbauer CLUTCH DEVICE
US5727342A (en) * 1996-04-18 1998-03-17 Wain-Roy, Inc. Hydraulic latch pin assembly for coupling a tool to a construction equipment
USRE37320E1 (en) * 1996-04-18 2001-08-14 Wec Co. Hydraulic latch pin assembly for coupling a tool to a construction equipment
US5966850A (en) * 1996-04-18 1999-10-19 Wain-Roy Holding, Inc. Hydraulic latch pin assembly for coupling a tool to a construction equipment
USRE37339E1 (en) * 1996-04-18 2001-08-28 Wec Co. Hydraulic latch pin assembly for coupling a tool to a construction equipment
FR2785951A1 (en) * 1998-11-12 2000-05-19 Alain Husson Quick-fit connector for implement such as bucket on end of manipulator arm has stirrup with aperture and locking plate engaging with hook
WO2000029680A1 (en) * 1998-11-12 2000-05-25 Klac Industrie Quick fastener for fixing a tool at the end of a loading arm or the like
FR2785952A1 (en) * 1998-11-12 2000-05-19 Alain Husson QUICK COUPLER FOR ATTACHING A TOOL AT THE END OF THE ARM OF A LOADER OR THE LIKE
US6629811B1 (en) * 1998-11-12 2003-10-07 Klac Industrie Quick fastener system for fixing a tool at the end of a loading arm
EP1048790A3 (en) * 1999-02-23 2000-12-06 Metaalwarenfabriek A.P. Verachtert B.V. Connecting piece
EP1048790A2 (en) * 1999-02-23 2000-11-02 Metaalwarenfabriek A.P. Verachtert B.V. Connecting piece
EP1033447A3 (en) * 1999-03-02 2000-12-06 Mantovanibenne S.r.l. A device for rapid tool coupling and release on tool arms.
US6332732B1 (en) 1999-03-02 2001-12-25 Mantovanibenne S.R.L. Device for rapid tool coupling and release on tool arms
EP1033447A2 (en) * 1999-03-02 2000-09-06 Mantovanibenne S.r.l. A device for rapid tool coupling and release on tool arms.
US6688801B2 (en) * 2000-05-31 2004-02-10 Klac Industrie Quick fastening safety device for fixing a tool to the end of a loader arm or the like
US6431785B1 (en) 2000-06-05 2002-08-13 Wec Co. Direct pin quick coupler
FR2826028A1 (en) * 2001-06-19 2002-12-20 Klac Industrie Quick fastener for fixing tool to end of loader arm comprises two parts, one comprising shaft engaging hook forming open bearing, hook has extension piece and clamping part is inserted in space between it and shaft
WO2002103121A1 (en) * 2001-06-19 2002-12-27 Klac Industrie Quick fastener for fixing a tool to the end of the arm of a loader or similar device
EP1820906A1 (en) * 2006-02-21 2007-08-22 Fredy Stury AG Device with a replaceable tool
WO2008111917A1 (en) * 2007-03-13 2008-09-18 Jozef Bajec Quick coupling for changing excavator tools
EP2241680A1 (en) * 2009-04-17 2010-10-20 Morin Connecting apparatus, quick coupler and connecting assembly
FR2944533A1 (en) * 2009-04-17 2010-10-22 Morin CONNECTING DEVICE, QUICK ATTACH COUPLER, AND CONNECTING ASSEMBLY.
DE102010034738A1 (en) 2009-08-21 2011-02-24 Perwein Baumaschinen-Systeme Gmbh Coupling device for fastening working device at excavator boom, has locking elements with front surfaces that comprise same inclination angle for forming parallel sliding faces, such that frictional tension between front surfaces is reduced
NO20093409A1 (en) * 2009-11-24 2011-05-25 Hardnor As Quick coupler for attaching a working tool to a machine
NO333221B1 (en) * 2009-11-24 2013-04-15 Hardnor As Quick coupler for attaching a working tool to a machine
EP3048204A1 (en) 2015-01-21 2016-07-27 Fredi Stury AG Changing device for mounting on a hydraulic excavator
CH710640A1 (en) * 2015-01-21 2016-07-29 Stury Fredi Ag Change device for attachment to a hydraulic excavator.
EP3165681A3 (en) * 2015-10-15 2017-08-16 J.C. Bamford Excavators Limited Quick hitch
US10883244B2 (en) 2015-10-15 2021-01-05 J. C. Bamford Excavators Limited Quick hitch

Also Published As

Publication number Publication date
ATE37404T1 (en) 1988-10-15
DE3474173D1 (en) 1988-10-27
CH661305A5 (en) 1987-07-15
EP0143074B1 (en) 1988-09-21

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