EP0372013B1 - Pince a pierres pour pelleteuse - Google Patents

Pince a pierres pour pelleteuse Download PDF

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Publication number
EP0372013B1
EP0372013B1 EP19890902015 EP89902015A EP0372013B1 EP 0372013 B1 EP0372013 B1 EP 0372013B1 EP 19890902015 EP19890902015 EP 19890902015 EP 89902015 A EP89902015 A EP 89902015A EP 0372013 B1 EP0372013 B1 EP 0372013B1
Authority
EP
European Patent Office
Prior art keywords
shovel
excavators
holding elements
dipper
digging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19890902015
Other languages
German (de)
English (en)
Other versions
EP0372013A1 (fr
Inventor
Peter Ruf
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.)
SCHWEISSWERK GISCHIG AG
Original Assignee
SCHWEISSWERK GISCHIG 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 SCHWEISSWERK GISCHIG AG filed Critical SCHWEISSWERK GISCHIG AG
Priority to AT89902015T priority Critical patent/ATE92563T1/de
Publication of EP0372013A1 publication Critical patent/EP0372013A1/fr
Application granted granted Critical
Publication of EP0372013B1 publication Critical patent/EP0372013B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • 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

Definitions

  • the invention relates to a special design of backhoe excavators, in particular with a gripping device for clearing rocks, according to the preamble of the present claim.
  • the digging buckets or the excavator shovels are replaced by special stone grabs in known excavators which are used for stone clearing work. These consist essentially of three to five circularly arranged, hydraulically operated grippers with which the stone or boulders are securely and be clamped. Larger stones or blocks can be lifted, moved and placed without any problems.
  • DE-A-31 32 392 proposes an implement which simultaneously meets the two requirements mentioned above.
  • This well-known backhoe excavator is equipped with a gripping device for clearing boulders, which the conventional digging bucket forms together with additional grabs mounted on the dipper arm, which can be pivoted independently of one another by hydraulic cylinders. With the additional grippers, the clearing material can be loaded onto the excavator bucket and a clamping effect, which is necessary to lift the clearing material, can be exerted.
  • the additional grippers are mounted directly on the dipper stick, so that the forceps of the additional grippers with the digging spoon depend on its movement relative to the dipper stick, so that the additional grippers have to be tracked synchronously with the movements of the digging spoon, which considerably complicates the control. In other words, in order to exert or maintain a clamping effect, every movement of the digging spoon requires an explicit tracking of the additional grippers.
  • the invention has for its object to provide a backhoe of the type specified, in which it is always ensured by simple design features that holding elements automatically follow the movement of the digging spoon, so that the clamping effect of the holding elements of movements of the digging spoon is independent.
  • tooth-like holding elements 1 are no longer fastened to the dipper arm 3 itself, but rather in that the fastening and articulation of the holding elements 1 on the digging spoon 2 take place directly.
  • these holding elements 1 are attached to the moving part, namely the digging spoon 2, and the hydraulic cylinders which move them are also supported on the digging spoon 2 in the swivel joint 4, it is achieved that the clamping effect of the holding elements 1 is independent of movements of the digging spoon 2 and no longer need to be tracked separately.
  • the holding elements will adapt to the shape of the clearing material (stones, boulders, etc.). As they are hydraulically controlled, the holding elements will change the angle of rotation until they hold the material to be cleared with the necessary pressure. The two holding elements 1 therefore do not need to have the same angle of rotation. Together with the digging spoon 3, the two holding elements form a pair of pliers that prevent the clearing material from falling out of the digging spoon.
  • the holding elements 1 Due to the optimal arrangement of the two holding elements 1 and a corresponding construction, the holding elements 1 can be pivoted completely upwards, so that the holding elements 1 can remain on the excavator shovel or bucket even during normal excavation work and no obstruction represent.
  • the holding elements 1 By mounting the holding elements 1 on the digging bucket (shovel) 2 it is achieved that they take part in all movements of the shovel 2.
  • the inventor has succeeded in finding a practical, practical and at the same time safe and comfortable solution to the problems mentioned at the beginning.
  • the simple construction method used at the same time guarantees a cost-effective production. Because of this expediency mentioned, this gripping device will find rapid spread.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Shovels (AREA)

Abstract

Cette pince à pierres pour pelleteuse résout un vieux problème, cest-à-dire que les grosses pierres apparaissant lors de l'excavation ne peuvent pas être levées avec la pelle normale. Ce problème est résolu dans le présent brevet avec deux bras ou parties de pince (1) additionnels, qui peuvent être montés et commandés hydrauliquement sur la pelle normale (2). De cette manière les grosses pierres apparaissant pendant le creusement peuvent être saisies et évacuées.

Claims (1)

  1. Pelles à godet avec godet rétro (2) relié à un balancier (3) orientable, muni d'éléments de maintien en forme de dent (1) indépendants les uns des autres et pivotants au autour d'un axe fixe grâce à des vérins hydrauliques formant un grappin destiné à déplacer des rochers et caractérisé par le fait que les éléments de maintien en forme dent (1) sont assemblés chacun directement sur le godet rétro (2) ou à une pièce de liaison fixe et que les vérins hydrauliques s'appuient sur le godet rétro (2) ou à une pièce reliée fixement à ce godet.
EP19890902015 1988-05-30 1989-02-16 Pince a pierres pour pelleteuse Expired - Lifetime EP0372013B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89902015T ATE92563T1 (de) 1988-05-30 1989-02-16 Steinzangen fuer bagger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH205188A CH676480A5 (fr) 1988-05-30 1988-05-30
CH2051/88 1988-05-30

Publications (2)

Publication Number Publication Date
EP0372013A1 EP0372013A1 (fr) 1990-06-13
EP0372013B1 true EP0372013B1 (fr) 1993-08-04

Family

ID=4224777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890902015 Expired - Lifetime EP0372013B1 (fr) 1988-05-30 1989-02-16 Pince a pierres pour pelleteuse

Country Status (3)

Country Link
EP (1) EP0372013B1 (fr)
CH (1) CH676480A5 (fr)
WO (1) WO1989012145A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4108315C2 (de) * 1991-03-14 1995-11-23 Josef Maier Erdbaumaschine, insbesondere Bagger
DE4218502C2 (de) * 1992-06-04 1994-10-06 Josef Maier Erdbaumaschine, insbesondere Bagger
DE9310018U1 (de) * 1993-07-06 1993-08-26 Nagler, Jürgen, 58313 Herdecke Baggerlöffel-Handhabungswerkzeug mit einer Schaufel
US6742291B2 (en) * 2001-08-06 2004-06-01 Denis Frigon Thumb for scooping tool arm
US7240441B2 (en) 2004-02-12 2007-07-10 Mccoy Ted Excavator thumb for use with excavator equipment
KR101669327B1 (ko) 2014-07-30 2016-10-25 이소정 버킷 체결용 집게 링크 장치
KR102105204B1 (ko) * 2018-09-11 2020-04-27 이창업 굴착기용 안전 집게 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU422410B1 (en) * 1966-08-12 1972-03-16 Channel Construction, Inc Clamping device
US4407626A (en) * 1981-01-30 1983-10-04 Bruckner Peter J Gripping device
US4375345A (en) * 1981-07-23 1983-03-01 J. I. Case Company Clamping arm assembly for a backhoe
DE3132392A1 (de) * 1981-08-17 1983-03-03 Krupp Mak Maschinenbau Gmbh, 2300 Kiel Ausbildung von erdbewegungsgeraeten, insbesondere als arbeitsgeraete fuer panzerfahrzeuge

Also Published As

Publication number Publication date
EP0372013A1 (fr) 1990-06-13
WO1989012145A1 (fr) 1989-12-14
CH676480A5 (fr) 1991-01-31

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