EP0728874A2 - Benne preneuse à deux coquilles - Google Patents

Benne preneuse à deux coquilles Download PDF

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Publication number
EP0728874A2
EP0728874A2 EP96100945A EP96100945A EP0728874A2 EP 0728874 A2 EP0728874 A2 EP 0728874A2 EP 96100945 A EP96100945 A EP 96100945A EP 96100945 A EP96100945 A EP 96100945A EP 0728874 A2 EP0728874 A2 EP 0728874A2
Authority
EP
European Patent Office
Prior art keywords
shells
shell
support
recesses
gripper
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.)
Withdrawn
Application number
EP96100945A
Other languages
German (de)
English (en)
Other versions
EP0728874A3 (fr
Inventor
Helmut Popp
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.)
Josef Riepl GmbH
Original Assignee
Josef Riepl GmbH
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 Josef Riepl GmbH filed Critical Josef Riepl GmbH
Publication of EP0728874A2 publication Critical patent/EP0728874A2/fr
Publication of EP0728874A3 publication Critical patent/EP0728874A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/02—Bucket grabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/005—Grab supports, e.g. articulations; Oscillation dampers; Orientation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors

Definitions

  • the invention relates to clamshell buckets with the features of the preamble of claim 1.
  • Clamshell buckets of the generic embodiment are constructed in such a way that the two shells are combined with a shell carrier which is arranged at the lower end of a vertical support tube. The top of this tube is received by a rotator attached to the excavator boom arm; At the lower end, the two support arms for receiving the two gripper shells are fastened, which can be actuated with the aid of hydraulic cylinders pivoting to open and close the gripper shells.
  • Shell carrier and gripper shells form a unit, so that when changing the gripper shells (e.g. for repair purposes or when replacing a shell with a predetermined shell width for a shell of another shell width), the shell carrier must also be replaced.
  • FIG. 34 25 036 C2 Another embodiment of clamshell grabs (DE 34 25 036 C2) has a bow-shaped shell support, on the legs of which the shells are mounted around two mutually parallel and spaced axes via their cross members welded to the shell side walls in the inner region from their upper edges.
  • the cross members have actuating levers at the ends of which a transverse hydraulic piston-cylinder unit connecting them is articulated.
  • the cross members designed as shafts are provided on both sides of the longitudinal center line of the clamshell grab with ring-shaped bearing surfaces which are mounted in split bearings.
  • the legs of the shell carrier are on both sides with the inner Provide bearing shells of the split bearings onto which the outer bearing shells are screwed. This is intended to achieve a high torsional rigidity of the shells while at the same time simpler storage of these shells.
  • the object of the invention is to design a generic clamshell grab so that it is possible in a particularly simple and cost-effective manner to replace only the shells themselves when changing from a shell set of a specific size or width to a shell set of different size or width, and this replacement is particularly simple, inexpensive and quick to carry out.
  • the separation point for changing the gripper shells is provided at the interface between the shell carrier and the gripper shells. It is therefore possible to only replace the gripper shells themselves when changing gripper shells of one shell size to a different shell size, while the shell carrier with the support arms is not changed, but can be used unchanged for all different dimensions of gripper shell sets.
  • the use of shell grippers of different shell sizes can therefore be carried out with the invention at a minimal cost, since the storage can be limited only to the different gripper shell sets required.
  • the exchange of gripper shells of different sizes is extremely simple. Since the same shell carrier with crossbeams is used for all different shell sizes, the clamshell bucket is placed on the floor to change the shell, the connections between the crossbeams and the gripper shells are removed by removing the support bolts or the like. (a total of, for example, two bolts per side surface of the clamshell grab), the shell carrier with the crossbeams and the crossbeam receptacles is placed on another set of shells of the desired size, the bores of the bushing of the crossbeams are aligned with the bores of the crossbeam receptacles, and the bolts are inserted into the bores used and secured so that operation can then begin.
  • the two gripper shells are kept closed for such a change, for example by a common locking mechanism, for example in the form of a plate; this lock is released and removed as soon as the gripper shells are connected to the shell carrier.
  • the invention is not restricted to designs in which two hydraulic cylinders are coupled to the support arms outside the shell support tube. Rather, it also includes designs in which a hydraulic cylinder is arranged centrally within the shell support tube.
  • a clamshell gripper 1 consists of gripper shells 2, 3 which, in the case of FIG. 1, are shown closed with the mutually facing, open sides (cutting edges) 4, 5 of the two shells.
  • the two shells 2 and 3 are through Locking plates 6, which are fastened by means of screws 7 to the side surfaces 2 ', 2'',3', 3 '' of the shells 2, 3.
  • Each of the gripper shells 2, 3 has, in the upper region, a traverse 8, 9 which extends from one side wall 2 'or 3' to the opposite side wall 2 '' or 3 '', in each of which bushings 10, 11 which run at right angles thereto are preferably hardened, are arranged and are used to hold preferably hardened support bolts 14.
  • the support bolts 14 can be locked via washers 15 with locking pins 16 in the assembled state of the arrangement.
  • the gripper shell arrangement 1 is received by a shell support head 17 which forms the lower end of a vertical shell support tube 18, the upper part of which is closed by a connecting flange 19 which is screwed to a flange 20 of the rotator 21 arranged above and connected to the flange 19.
  • the rotator 21 is connected to the boom arm of the excavator and enables the shell support tube 18 to be rotated about its axis.
  • the shell support tube 18 has a rotator connection and hydraulic distributor 22.
  • Two bearings 23 and 24 are arranged diametrically opposite one another on the shell support tube 18 and accommodate the fastening points 25, 26, which represent the receptacle for the hydraulic cylinders 27, 28.
  • the ends 31, 32 of the piston rods 29, 30 of the hydraulic cylinders 27, 28 are fastened to bearing points 33, 34, which are simultaneously the bearing points for two support arms 35, 36, which in turn are connected to one another in a common bearing point 37 for synchronism.
  • the support arms 35, 36 are provided with recesses 38, 39 which are designed so that they include the cross members 8, 9, in the case of the special embodiment in cross section U-shaped.
  • Bearings 40, 41 and 42, 43 have holes 44, 45, which come in the assembled state of the clamshell grab with holes 12, 13 of the cross members 8, 9 with the bushings 10, 11.
  • the bores 12, 13 of the bushes 10, 11 are aligned with the bores 44, 45 in the assembled state of the gripper.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP96100945A 1995-02-24 1996-01-24 Benne preneuse à deux coquilles Withdrawn EP0728874A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995106427 DE19506427C1 (de) 1995-02-24 1995-02-24 Zweischalengreifer
DE19506427 1995-02-24

Publications (2)

Publication Number Publication Date
EP0728874A2 true EP0728874A2 (fr) 1996-08-28
EP0728874A3 EP0728874A3 (fr) 1997-04-16

Family

ID=7754906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96100945A Withdrawn EP0728874A3 (fr) 1995-02-24 1996-01-24 Benne preneuse à deux coquilles

Country Status (2)

Country Link
EP (1) EP0728874A3 (fr)
DE (1) DE19506427C1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10100449B4 (de) * 2000-04-17 2007-10-04 Liebherr-Hydraulikbagger Gmbh Schnellwechsler für Mehrschalengreifer
EP1837445A3 (fr) * 2006-03-20 2007-11-21 Gottlieb Tesch Bauunternehmen GmbH Outil pour une excavatrice
FR2915216A1 (fr) * 2007-04-20 2008-10-24 Jean Pierre Dorguin Dispositif formant accessoire de travail destine a etre monte en extremite de fleche de machine automotrice.
GB2522420A (en) * 2014-01-22 2015-07-29 Caterpillar Work Tools Bv Exchange system for implement of machine
EP3097041B1 (fr) * 2014-01-24 2020-11-18 Caterpillar Work Tools B.V. Système de positionnement pour accessoire de machine
LU502618A1 (en) * 2021-09-09 2023-03-09 Eurocrane China Co Ltd Rotating grab cart

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5233840B2 (ja) 2009-05-20 2013-07-10 コベルコ建機株式会社 作業機械の把持装置及びこれを備えた作業機械
WO2012142247A2 (fr) * 2011-04-12 2012-10-18 Gulfstream Services, Inc. Appareil à benne hydraulique
DE202020104693U1 (de) 2020-08-13 2021-11-16 Rolf Mieger Antrieb für einen Greifer, Greifer und Baumaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH509477A (de) * 1969-09-04 1971-06-30 Abplanalp Ag Zweischalengreifer für Bagger
DE3425036A1 (de) * 1984-07-06 1986-02-06 Kinshofer, Alfred, Ing.(grad.), 8160 Miesbach Zweischalengreifer
US5228735A (en) * 1991-10-23 1993-07-20 Morrow Sr James G Hydraulically operated clam bucket with improved force transferring arrangement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10100449B4 (de) * 2000-04-17 2007-10-04 Liebherr-Hydraulikbagger Gmbh Schnellwechsler für Mehrschalengreifer
EP1837445A3 (fr) * 2006-03-20 2007-11-21 Gottlieb Tesch Bauunternehmen GmbH Outil pour une excavatrice
FR2915216A1 (fr) * 2007-04-20 2008-10-24 Jean Pierre Dorguin Dispositif formant accessoire de travail destine a etre monte en extremite de fleche de machine automotrice.
EP1983114A3 (fr) * 2007-04-20 2010-01-27 Jean-Pierre Dorguin Accessoire de travail destiné à être monté à l'extrémité d'une flèche de machine automotrice.
GB2522420A (en) * 2014-01-22 2015-07-29 Caterpillar Work Tools Bv Exchange system for implement of machine
GB2522420B (en) * 2014-01-22 2018-09-05 Caterpillar Work Tools Bv Exchange system for implement of machine
EP3097041B1 (fr) * 2014-01-24 2020-11-18 Caterpillar Work Tools B.V. Système de positionnement pour accessoire de machine
LU502618A1 (en) * 2021-09-09 2023-03-09 Eurocrane China Co Ltd Rotating grab cart

Also Published As

Publication number Publication date
EP0728874A3 (fr) 1997-04-16
DE19506427C1 (de) 1996-04-25

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