EP0023495B1 - Eimer-aufbau - Google Patents

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Publication number
EP0023495B1
EP0023495B1 EP80900158A EP80900158A EP0023495B1 EP 0023495 B1 EP0023495 B1 EP 0023495B1 EP 80900158 A EP80900158 A EP 80900158A EP 80900158 A EP80900158 A EP 80900158A EP 0023495 B1 EP0023495 B1 EP 0023495B1
Authority
EP
European Patent Office
Prior art keywords
claws
bucket
bucket assembly
assembly according
gripping tool
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
Application number
EP80900158A
Other languages
English (en)
French (fr)
Other versions
EP0023495A1 (de
Inventor
Lars Engkvist
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.)
Soneruds Maskin AB
Original Assignee
Soneruds Maskin AB
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
Priority to AT80900158T priority Critical patent/ATE4335T1/de
Application filed by Soneruds Maskin AB filed Critical Soneruds Maskin AB
Publication of EP0023495A1 publication Critical patent/EP0023495A1/de
Application granted granted Critical
Publication of EP0023495B1 publication Critical patent/EP0023495B1/de
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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/962—Mounting of implements directly on tools already attached to the machine

Definitions

  • This invention relates to a bucket assembly for excavators or loaders, comprising, a bucket portion and a gripping tool arranged to grip, at need, arbitrary objects such as poles, pillars, beams or the like and hold them in relation to the bucket portion.
  • a bucket assembly of this type solely intended for loaders is previously known by the British patent specification 1 070 877 which discloses a gripping tool having two claws or claw-like arms which are mounted for pivoting movements towards and away from each other while forming a jaw of variable size for receiving the object.
  • These two claw arms are comparatively long and mounted directly upon the top surface of the bucket portion in such a way that a large portion of each arm always juts out from the upper edge of the bucket portion.
  • the object of the present invention is to eliminate the above mentioned limitations in the previously known bucket assembly and to provide a more useful assembly with increased working life.
  • this is achieved by the fact that the gripping tool is built into a box-like protective housing into which the tool, through an opening, may be retracted to an inactive, protected position permitting the use of the bucket assembly for digging purposes without hindrance by the gripping tool and out of which the tool may be extended to an active position in which it is capable of gripping said objects.
  • the gripping tool By arranging the gripping tool in this way the bucket assembly may with particularly great advantage first of all be used for digging a pit in the ground and immediately thereafter grip a telephone or cable pole and place the same in the pit.
  • the bucket assembly according to the British patent specification mentioned relies on the use of two separate piston-cylinder mechanisms for controlling the two claws or arms which jointly form the gripping tool.
  • This construction is unsatisfactory in so far as the claws will move non-uniformly if one of the mechanisms binds or otherwise moves in a manner differing from the manner in which the other mechanism moves; what in turn means that the object which is held by the claws is not centered in relation to the bucket.
  • the object may on one occasion get to the left and on the other occasion to the right in relation to the center of the bucket; involving working conditions which are difficult to master for the operator who, when it is a question of for instance mounting of telephone poles in ground pits dug by means of the bucket, is dependent on a precise alignment of the pole in the mark pit dug.
  • the claws of the bucket assembly of the invention may be connected through suitable connecting means to a control mechanism which is common to both of the claws, said mechanism in operation always transmitting substantially uniform control movements to the two claws while securing an automatic centering of an object being present therebetween.
  • FIG. 1 is a partially simplified perspective view of a bucket assembly according to the invention as viewed obliquely from the front, Fig. 2 a horizontal section through the assembly of Figure 1 the gripping tool in question being shown in its inactive position and Fig. 3 a similar section showing the gripping tool in the active position.
  • a bucket for an excavator is generally designated 1 in Fig. 1.
  • the bucket is designed with a bottom piece 2 extending obliquely upwardly-forwardly, a front piece 3, two side pieces 4 and a top piece 5.
  • the bucket has a mouth designated 6 which is not visible in the drawing.
  • the bucket has an attachment generally designated 7 which in a suitable manner may be connected to the free end of the arm of the excavator (not shown) in relation to which the bucket is pivotable in the usual manner.
  • the bucket or bucket portion 1 comprises a gripping tool generally designated 9 which in the example shown consists of two claws 10, 11 which are hingedly mounted relative to the bucket and which are pivotable towards and away from each other while forming a jaw of variable size. More precisely the gripping tool 9 is located in the upper part of the bucket 1 with the gripping claws 10, 11 directed substantially forwardly from the bucket, or in other words directed substantially diametrically opposed to the above-mentioned mouth 6 in the bucket.
  • the gripping tool 9 is built into a protective housing in the form of a box 12 which may be mounted as a unit in or on the bucket.
  • the bucket may either be a bucket which is already manufactured and in use or a newly-produced bucket.
  • the box 12 is completely closed except for the opening designated 8 through which the two claws 10, 11 forming the tool 9 are movable between their active and inactive positions respectively.
  • Fig. 1 it is shown how the two claws 10, 11 are pivotable each about a vertical hinge or shaft 13 and 14 respectively extending between the top and the bottom of the box 12, said shafts suitably being easy to dismount, e.g. by means of Seeger-rings (not shown).
  • the claw 10 comprises two members or halves 15, 16 which are rather distantly spaced along the shaft 13 and between which the other claw 11 may in its entirety be inserted upon pivoting the claws towards each other.
  • the claw 11 is composed of two interspaced members 17, 18, which gives a good gripping and holding capability in connection with long objects which are located between the claws parallel to the shafts 13, 14.
  • Fig. 3 appears how the gripping surfaces 27 of the claws or claw members are of arcuate shape having a gradually increasing radius in the direction of the free ends of the claws. In this way one obtains a favourable grip of objects 28, e.g. poles, having highly varying section sizes.
  • piston-cylinder mechanism 22 in the conventional manner advantageously may be equipped with so called hose breakage valves, i.e. safety valves which guarantee that the piston rod 21 remains in a settled position in which the gripping tool maintains its grip of the object in question even in the event of breakage or leakage occuring in anyone of the conduits 25 26.
  • hose breakage valves i.e. safety valves which guarantee that the piston rod 21 remains in a settled position in which the gripping tool maintains its grip of the object in question even in the event of breakage or leakage occuring in anyone of the conduits 25 26.
  • the bucket described operates in the following way.
  • the claws 10, 11 are kept inserted in the interior of the bucket or the box 12 in the inactive position shown in Fig. 2.
  • the claws do not form any obstacle whatsoever for the bucket during the digging work thereof.
  • the insertion of the claws is taken care of by the fact that the piston rod 21 is pushed into its innermost position and through the yoke 20 and the links 19 this movement causes the claws to pivot about their respective shafts 13, 14 to the positions shown in Fig. 2.
  • an object e.g.
  • the claws 10, 11 may be activated by pushing the piston rod out of its cylinder while extending the claws out of the shell-like exterior of the bucket to the position shown in Fig. 3.
  • the object or pole 28 may be gripped between the claws 10, 11 by the piston rod 21 again being pulled into the cylinder which will have the result that the claws are pivoted and caused to contact the pole 28 while fastening the pole in the jaw formed by the claws.
  • the pole 28 will also contact and abut the front portion of the bucket assembly or more precisely abut the elements which confine the front opening 8 of the protective box 12. In this condition the pole may easily be raised by pivoting or rotating the entire bucket relative to the excavator arm in a manner known per se until the pole has assumed a vertical position in which it is retained during the anchoring work.
  • the invention is not limited merely to the embodiment described and shown in the drawings.
  • the assembly of the invention is per se useful not only in connection with just excavators but also in connection with for instance loading machines using buckets.
  • the invention may be used for gripping other objects than just light poles, e.g. pillars, beams, plates or other things.
  • the gripping tool may also have another design than just the tool shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Centrifugal Separators (AREA)
  • Earth Drilling (AREA)

Claims (7)

1. Shaufeleinheit für Grabmaschinen oder Lader mit einer Shaufelteil (1) sowie einem Greifwerkzeug (9) zum bedarfsweisen Ergreifen von beliebigen Gegenständen (28), wie Naste, Säulen, Balken od.dgl. und Festhalten derselben in bezug auf den Schaufelteil, dadurch gekennzeichnet, daß das Greifwerkzeug (9) in einem kastenartigen Schutzgehäuse (12) eingebaut ist, in welches das Werkzeug durch eine Öffnung hindurch in eine unwirksame, geschützte Stellung zur Anwendung der Shaufeleinheit für Grabzwecke ohne Behinderung durch das Greifwerkzeug einziehbar ist und aus welchem das Werkzeug in ein wirksame Stellung ausfahrbar ist, in der es in der Lage ist, die genannten Gegenstände zu ergreifen.
2. Schaufeleinheit nach Patentanspruch 1, dadurch gekennzeichnet, daß die Öffnung des Schutzgehäuses (12) und das durch diese hinein und heraus bewegbare Greifwerkzeug (9) im wesentlichen entgegengesetzt zur Maulöffnung (6) des Schaufelteiles (1) gerichtet sind.
3. Shaufeleinheit nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, daß das Greifwerkzeug (9) zwei Klauen (10, 11), umfaßt, die gegeneinander und voneinander schwenkbar angeordnet sind und mittels geeigneter Verbindungselemente (19, 20) mit einem für beide Klauen gemeinsamen Steuermechanismus (22) verbunden sind, wobei der genannte Mechanismus im Betrieb stets im wesentlichen gleichmäßige Steuerbewegungen auf die beiden Klauen überträgt, und dabei eine automatische Zentrierung eines dazwischen befindlichen Gegenstandes gewährleistet.
4. Schaufeleinheit nach Patentanspruch 3, dadurch gekennzeichnet, daß die Verbindungselemente zwischen den Klauen (10, 11) und dem Steuermechanismus (22) aus zwei Lenkern (19) bestehen, die einerseits an geeigneten Stellen mit den Klauen und anderseits mit einem gemeinsamen Joch (20) schwenkbar verbunden sind, das durch Verbindung mit einem als genannter Steuermechanismus dienenden Kolben-Zylinder-Mechanismus (22) vorwärts und rückwärts bewegbar ist.
5. Schaufeleinheit nach den Patentansprüchen 3 und 4, dadurch gekennzeichnet, daß die Schwenkbarkeit der Klauen (10, 11) durch zwei fixe Schwenkzapfen (13, 14) gegeben ist, die sich zwischen dem oberen und dem unteren Teil des Schutzgehäuses (12) erstrecken, wobei der Steuermechanismus (22) drehbar an einem fixen dritten Schwenkzapfen (23) angelenkt ist, der am genannten Gehäuse befestigt ist.
6. Schaufeleinheight nach einem der Patentansprüche 3 bis 5, dadurch gekennzeichnet, daß wenigstens eine (10) der beiden Klauen zwei Teile oder Hälften umfaßt, die in Richtung parallel zum Schwenkzapfen (13) der Klaue im Abstand angeordnet sind und zwischen welche die andere Klaue (11) beim Schwenken der Klauen einwärts gegeneinander ganz oder teilweise einbringbar ist.
7. Schaufeleinheit nach einem der Patentansprüche 3 bis 6, dadurch gekennzeichnet, daß die Greifflächen (27) der Klauen oder Klauenteile mit in Richtung der freien Enden der Klauen allmählich zunehmendem Radius bogenförmig ausgebildet sind.
EP80900158A 1979-01-03 1980-07-14 Eimer-aufbau Expired EP0023495B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80900158T ATE4335T1 (de) 1979-01-03 1980-01-03 Eimer-aufbau.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7900040A SE428138B (sv) 1979-01-03 1979-01-03 Grevskopa med gripanordning
SE7900040 1979-01-03

Publications (2)

Publication Number Publication Date
EP0023495A1 EP0023495A1 (de) 1981-02-11
EP0023495B1 true EP0023495B1 (de) 1983-07-27

Family

ID=20336918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80900158A Expired EP0023495B1 (de) 1979-01-03 1980-07-14 Eimer-aufbau

Country Status (10)

Country Link
EP (1) EP0023495B1 (de)
DE (1) DE3064341D1 (de)
DK (1) DK155753C (de)
FI (1) FI64213C (de)
HK (1) HK48684A (de)
MY (1) MY8500522A (de)
NO (1) NO149781C (de)
SE (1) SE428138B (de)
SG (1) SG36084G (de)
WO (1) WO1980001393A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE445754B (sv) * 1982-06-21 1986-07-14 John Teodor Sonerud Borrmaskin for losbar hopkoppling med maskin for manovrering av densamma
SE464645C (sv) * 1989-08-22 1993-02-08 Stig Sandberg Gripanordning
SE506016C2 (sv) * 1993-12-16 1997-11-03 Bernt Wedberg Snabbfäste för arbetsmaskiner
CN108946193B (zh) * 2018-09-21 2023-09-15 窦生荣 一种水泥上料装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1070877A (en) * 1964-09-19 1967-06-07 Gkn Group Services Ltd Bucket assembly for a bucket loader
FR2226513B1 (de) * 1973-04-17 1976-05-28 Poclain Sa

Also Published As

Publication number Publication date
DK155753B (da) 1989-05-08
SE7900040L (sv) 1980-07-04
SG36084G (en) 1985-06-07
MY8500522A (en) 1985-12-31
NO149781C (no) 1984-06-20
FI800019A (fi) 1980-07-04
FI64213B (fi) 1983-06-30
SE428138B (sv) 1983-06-06
FI64213C (fi) 1984-11-08
NO149781B (no) 1984-03-12
DK371980A (da) 1980-09-01
HK48684A (en) 1984-06-22
WO1980001393A1 (en) 1980-07-10
NO802484L (no) 1980-08-21
DE3064341D1 (en) 1983-09-01
EP0023495A1 (de) 1981-02-11
DK155753C (da) 1989-09-25

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