EP2194193A1 - Excavator grab - Google Patents
Excavator grab Download PDFInfo
- Publication number
- EP2194193A1 EP2194193A1 EP08170866A EP08170866A EP2194193A1 EP 2194193 A1 EP2194193 A1 EP 2194193A1 EP 08170866 A EP08170866 A EP 08170866A EP 08170866 A EP08170866 A EP 08170866A EP 2194193 A1 EP2194193 A1 EP 2194193A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jaw
- suspension
- arms
- bucket
- axis
- 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- Withdrawn
Links
- 239000000725 suspension Substances 0.000 claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 235000003434 Sesamum indicum Nutrition 0.000 description 6
- 244000000231 Sesamum indicum Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
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
- E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
-
- 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
- B66C3/14—Grabs opened or closed by driving motors thereon
- B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
-
- 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
- B66C3/20—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 mounted on, or guided by, jibs
Definitions
- the present invention relates to a gravel dumper.
- Earth excavators having two jaws hinged to a frame around parallel axes and spaced apart from each other, these buckets being suspended from a machine such as crane, truck, construction machine, earthmoving machine.
- the jaws are controlled by one or more jacks housed in the frame.
- the present invention relates to an earth moving bucket comprising a rigid chassis suspended from an earthmoving machine, a main cylinder housed in the chassis, two symmetrical jaws controlled by the main cylinder, capable of moving between open positions. maximum and complete closure, each jaw being carried by two parallel suspension arms pivoting on the frame about the same axis of suspension, these two axes being parallel and spaced from each other on the frame, each jaw being articulated, at the lower end of its suspension arms, on a pivot axis parallel to the suspension axes, and connected to maneuvering arms controlling tilting movements of the jaw on its pivot axis during a maneuver opening or closing the bucket, characterized in that each jaw is composed of two different rigid parts, a receptacle and a shovel, each with a base and a sole or a toothing, these two jaw parts, being hinged one on the other and on the suspension arms, about said pivot axis, and being further separately connected to the operating arms of the jaw, the shovel by a direct articulation to its
- the Fig. 1 shows the main constituents of the bucket.
- a rigid frame 1 in the form of a trapezoidal prism is provided on its upper side with hydraulic feed members 2 and hooking members (not shown) for connecting the bucket to a control arm of a machine such as truck, crane or construction machine according to the usual technique.
- This frame is equipped in the lower corners of its structure with two axes 3 parallel and perpendicular to its end faces, these axes being embodied by pivoting members such as bearings or shafts, or provided with reinforcing elements that it does not have. is not necessary to describe here.
- the axes 3 are suspension axes on each of which pivot the upper ends of two suspension arms 4.
- the frame thus carries two pairs of suspension arms which are arranged on each of its front faces, are parallel and slightly curved towards the center .
- a robust tubular member 5 which connects the arms of the pair rigidly to each other and also performs a stop function as will be seen later .
- the two suspension arms 4 of each pair carry articulation members 6 which will be detailed below, which are coaxial, define a pivot axis 7 parallel to the axes 3 and ensure the suspension of one of the jaws 8 of the bucket on the common axis of the bodies 6, while allowing its pivoting.
- arms 9 are arranged in the vicinity of each of the suspension arms 4. These are four actuating arms, ie two per jaw 8 placed on the outer faces of the jaws.
- This jack is housed inside the frame 1 in a longitudinal position. This is, in the embodiment shown, a hydraulic cylinder with a cylinder 11 in which slides a rod 12. It will be controlled by the extension or withdrawal by the operator of the bucket.
- a hydraulic cylinder with a cylinder 11 in which slides a rod 12. It will be controlled by the extension or withdrawal by the operator of the bucket.
- At the end of the rod 12 and on the bottom of the cylinder 11 are mounted members which materialize at these two locations two hinge pins 13 perpendicular to the faces of the chassis and therefore parallel to the suspension axes 3 and pivoting 7.
- the jack 10 is connected indirectly to the frame 1.
- Two coordination bars 18 are each articulated, at one end, on one of the pins 13 and are connected at their other end by a tie rod 19 whose central portion is hinged itself in the center of the side face of the frame 1 by a hinge 20.
- This indirect connection between the frame and the jack allows the latter to move according to the regime of forces imposed on the rod 12 and the cylinder 11 of the cylinder 10.
- the Fig. 1 shows the maximum extension position of the cylinder 10, the two jaws 8 being pressed against each other, in the fully closed position.
- the Fig. 2 shows the maximum contraction position of the cylinder 10, the two jaws being open symmetrically, and the Fig. 3 shows an intermediate position in which the jaws are in asymmetrical positions. Note that in this position, the cylinder 10 is shifted in the frame relative to its normal position.
- the jaws 8 are composed of two rigid parts hinged to one another along the pivot axis 7 common to these two parts and the suspension arms 4. Comparing the jaws 8 left and right on the Fig. 3 it can be seen that the two parts of the right jaw made relative pivoting of limited amplitude with respect to each other, while the left jaw moved as if in one piece. The two moving parts will be called then a receptacle 8a and a shovel 8b.
- the receptacle 8a comprises ( Fig.
- the shovel 8b has for its base 25a a curved bottom 25 extended by a knife 26. It is equipped with teeth 27. Side walls 28 of the base 25a engage inside the walls 22 of the receptacle and are reinforced at the level of the pivot axis 7 by V-cut plates 29.
- the plates 29 have an extension which, as can be seen in FIGS. figs 3 and 4 carries a hinge ring 30 of the shovel 8b to the operating arm 9.
- Another pair of hinge rings 31 integral with pivot axes connects curved rods 32 having a head-like extension to the flanks 22 of the receptacles. .
- the heads of the rods 32 are engaged in lateral notches of the operating arms 9.
- the axes of articulation of the rings 6, 30 and 31 are aligned with the left jaw and form a broken line at the right jaw, resulting from a relative rotation of the two jaw parts, due to displacements. differentiated arms 4 and 9 during the control of the cylinder 10 between the positions of figs 2 and 3 .
- the bucket control device still has a second jack 34 whose cylinder is mounted on the hinge axis 13a common to the rods 16 and 17 for the same purpose as that disclosed in the patent. EP 0256304 but whose effect is exerted mainly on the receptacle portion 8a of the jaws.
- This auxiliary jack 34 may be spring loaded or hydraulic. If necessary, it can be connected to the cylinder 10 and controlled from the machine carrying the bucket. As a reminder, the flanks 22 of the jaws 8 are cut with a deep indentation whose radius corresponds to that of the robust tube 5 incorporated in the suspension arms 4.
- the Fig. 6 still shows an additional element of the dumpster. It is an inner scraping device 36 which equips the receptacle 8a of each of the jaws 8.
- This device comprises a curved plate 36a integral with two L-shaped transverse arms 36b which can be hooked to integral inner nipples 36c. inner faces of the walls 22 of each receptacle 8a.
- a central arm 36d with a hinge 36e can be hung on the jack 34.
Abstract
Description
La présente invention a pour objet une benne de terrassement.The present invention relates to a gravel dumper.
On connaît des bennes de terrassement comportant deux mâchoires articulées sur un châssis autour d'axes parallèles et espacés l'un de l'autre, ces bennes étant suspendues à un engin tel que grue, camion, machine de chantier, engin de terrassement. Les mâchoires sont commandées par un ou plusieurs vérins logés dans le châssis. La grande diversité des structures des sols dans lesquels ces bennes peuvent être utilisées et la variété de leur utilisation pour creuser, racler, soulever des charges telles que blocs de pierre, transports de terre, nivellement de surfaces, etc., ont pour conséquence que les utilisateurs recherchent pour ces bennes des performances très diverses, ce qui conduit à des réalisations sans cesse plus perfectionnées.Earth excavators are known having two jaws hinged to a frame around parallel axes and spaced apart from each other, these buckets being suspended from a machine such as crane, truck, construction machine, earthmoving machine. The jaws are controlled by one or more jacks housed in the frame. The great diversity of soil structures in which these buckets can be used and the variety of their use for digging, scraping, lifting loads such as blocks of stone, earth transport, leveling surfaces, etc., have the consequence that For these skips, users are looking for a wide range of performances, which leads to ever more sophisticated achievements.
Le brevet européen
Dans ce but, la présente invention concerne une benne de terrassement comportant un châssis rigide suspendu à un engin de terrassement, un vérin principal logé dans le châssis, deux mâchoires symétriques commandées par le vérin principal, capables de se déplacer entre des positions d'ouverture maximale et de fermeture complète, chaque mâchoire étant portée par deux bras de suspension parallèles pivotant sur le châssis autour d'un même axe de suspension, ces deux axes étant parallèles et espacés l'un de l'autre sur le châssis, chaque mâchoire étant articulée, à l'extrémité inférieure de ses bras de suspension, sur un axe de pivotement parallèle aux axes de suspension, et reliée à des bras de manoeuvre commandant des mouvements de basculement de la mâchoire sur son axe de pivotement au cours d'une manoeuvre d'ouverture ou de fermeture de la benne, caractérisée en ce que chaque mâchoire est composée de deux parties rigides différentes, soit un réceptacle et une pelle, avec chacune un socle et une semelle ou une denture, ces deux parties de mâchoire, étant articulées l'une sur l'autre et sur les bras de suspension, autour dudit axe de pivotement, et étant en outre reliées séparément aux bras de manoeuvre de la mâchoire, la pelle par une articulation directe à son socle, et le réceptacle par des liaisons entre son socle et les bras de manoeuvre, la commande des mâchoires, étant réalisée par des systèmes articulés à quatre biellettes qui relient les bras de suspension et de manoeuvre au châssis et au vérin, et qui sont conformées et dimensionnées de telle manière qu'entre la pelle et le réceptacle de chaque mâchoire se produise un mouvement de pivotement relatif sur ledit axe de pivotement, d'amplitude limitée et dans des sens alternés au cours d'un mouvement complet d'ouverture ou de fermeture de la benne.For this purpose, the present invention relates to an earth moving bucket comprising a rigid chassis suspended from an earthmoving machine, a main cylinder housed in the chassis, two symmetrical jaws controlled by the main cylinder, capable of moving between open positions. maximum and complete closure, each jaw being carried by two parallel suspension arms pivoting on the frame about the same axis of suspension, these two axes being parallel and spaced from each other on the frame, each jaw being articulated, at the lower end of its suspension arms, on a pivot axis parallel to the suspension axes, and connected to maneuvering arms controlling tilting movements of the jaw on its pivot axis during a maneuver opening or closing the bucket, characterized in that each jaw is composed of two different rigid parts, a receptacle and a shovel, each with a base and a sole or a toothing, these two jaw parts, being hinged one on the other and on the suspension arms, about said pivot axis, and being further separately connected to the operating arms of the jaw, the shovel by a direct articulation to its base, and the receptacle by links between its base and the operating arms, the control of the jaws, being achieved by articulated four-link systems which connect the suspension and actuating arms to the frame and the cylinder, and which are shaped and dimensioned such that between the shovel and receptacle of each jaw occurs relative pivotal movement on said pivot axis, of limited amplitude and in alternating directions during a movement c complete opening or closing of the bucket.
Des caractéristiques importantes de la benne de terrassement selon l'invention sont définies dans les revendications dépendantes annexées.Important features of the earthmover bucket according to the invention are defined in the appended dependent claims.
On décrit ci-après, à titre d'exemple non limitatif, une forme d'exécution de l'objet de l'invention telle que représentée par les dessins annexés, dont
- la
fig. 1 est une vue en élévation de face de la benne en position fermée, - la
fig. 2 une vue en coupe verticale de la benne en position entièrement ouverte, - la
fig. 3 une vue semblable à lafig. 2 de la benne en position intermédiaire, - la
fig. 4 une vue en perspective de la benne dans la position de lafig. 3 , - la
fig. 5 une vue en élévation semblable à lafig. 3 montrant un bloc saisi par la benne, - la
fig. 6 une vue en perspective éclatée de la benne en position ouverte, et - la
fig. 7 une vue de détail des articulations des parties d'une mâchoire sur les bras de suspension et de manoeuvre.
- the
Fig. 1 is a front elevational view of the bucket in the closed position, - the
Fig. 2 a vertical sectional view of the bucket in fully open position, - the
Fig. 3 a view similar to theFig. 2 the bucket in the intermediate position, - the
Fig. 4 a perspective view of the bucket in the position of theFig. 3 , - the
Fig. 5 an elevation view similar to theFig. 3 showing a block grabbed by the bucket, - the
Fig. 6 an exploded perspective view of the bucket in the open position, and - the
Fig. 7 a detailed view of the joints of the parts of a jaw on the suspension and maneuvering arms.
La
On voit au dessin que des bras 9 sont disposés au voisinage de chacun des bras de suspension 4. Ce sont quatre bras de manoeuvre, soit deux par mâchoire 8 placés sur les faces extérieures des mâchoires. Avant de décrire leurs fonctions, il convient de montrer la disposition du vérin principal 10 mieux visible à la
Le vérin 10 est lié indirectement au châssis 1. Deux barres de coordination 18 sont articulées chacune, à une extrémité, sur l'un des axes 13 et sont reliées à leur autre extrémité par un tirant 19 dont la partie centrale est articulée elle-même au centre de la face latérale du châssis 1 par une articulation 20. Cette liaison indirecte entre le châssis et le vérin permet à ce dernier de se déplacer en fonction du régime des forces imposé à la tige 12 et au cylindre 11 du vérin 10. La
En comparant les
La figure éclatée 6 et la vue de détail 7 expliquent les fonctions des bras de manoeuvre 9. On se référera également aux
L'effet de cette disposition est visible à la
La
La manoeuvre de ce dispositif de raclage permet d'éliminer les résidus argileux ou limoneux collés dans le socle du réceptacle.Maneuvering this scraper device makes it possible to remove the clay or silt residues stuck in the base of the receptacle.
Claims (8)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08170866A EP2194193A1 (en) | 2008-12-05 | 2008-12-05 | Excavator grab |
JP2011539146A JP5406307B2 (en) | 2008-12-05 | 2009-11-30 | Earthwork bucket |
EP09774965A EP2370643B1 (en) | 2008-12-05 | 2009-11-30 | Earth moving bucket |
US12/998,831 US8607480B2 (en) | 2008-12-05 | 2009-11-30 | Earth moving bucket |
PCT/IB2009/055412 WO2010064188A1 (en) | 2008-12-05 | 2009-11-30 | Earth moving bucket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08170866A EP2194193A1 (en) | 2008-12-05 | 2008-12-05 | Excavator grab |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2194193A1 true EP2194193A1 (en) | 2010-06-09 |
Family
ID=40373506
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08170866A Withdrawn EP2194193A1 (en) | 2008-12-05 | 2008-12-05 | Excavator grab |
EP09774965A Active EP2370643B1 (en) | 2008-12-05 | 2009-11-30 | Earth moving bucket |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09774965A Active EP2370643B1 (en) | 2008-12-05 | 2009-11-30 | Earth moving bucket |
Country Status (4)
Country | Link |
---|---|
US (1) | US8607480B2 (en) |
EP (2) | EP2194193A1 (en) |
JP (1) | JP5406307B2 (en) |
WO (1) | WO2010064188A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102249145A (en) * | 2011-05-17 | 2011-11-23 | 三一集团有限公司 | Engineering machine and lifting device thereof |
CN102359137A (en) * | 2011-06-30 | 2012-02-22 | 三一重工股份有限公司 | Land scraper and loosening device thereof |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2012242786A1 (en) * | 2011-04-12 | 2013-11-07 | Gulfstream Services, Inc. | Hydraulic bucket apparatus |
NL2023006B1 (en) * | 2019-04-25 | 2020-11-02 | Lely Patent Nv | Feeding system and method for feeding animals, as well as feed gripper |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE590683C (en) * | 1931-10-28 | 1934-01-12 | Naamlooze Vennootschap Havenbe | Self-grabber |
DE1114623B (en) * | 1957-01-14 | 1961-10-05 | Wilhelm Ludowici Dr Ing | Gripper |
DE1123097B (en) * | 1959-11-21 | 1962-02-01 | Taylor & Sons Manchester Ltd F | Bucket gripper with hydraulic drive for swiveling the two bucket halves |
EP0054207A2 (en) * | 1980-12-02 | 1982-06-23 | Serge Vuistiner | Hydraulic device for a soil-shifting machine |
EP0256304A1 (en) | 1986-07-18 | 1988-02-24 | Serge Vuistiner | Soil-working machine |
US5762390A (en) * | 1996-07-16 | 1998-06-09 | Universite Laval | Underactuated mechanical finger with return actuation |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US443993A (en) * | 1891-01-06 | Hoisting apparatus | ||
US1794257A (en) * | 1928-06-26 | 1931-02-24 | G H Williams Company | Clamshell bucket |
US2314395A (en) * | 1941-10-17 | 1943-03-23 | Biaw Knox Company | Clamshell bucket |
US2486479A (en) * | 1944-11-04 | 1949-11-01 | Kenneth J Kennedy | Combination grab bucket and live boom |
US2621428A (en) * | 1946-06-21 | 1952-12-16 | Roy O Billings | Clamshell bucket |
US3695473A (en) * | 1970-10-28 | 1972-10-03 | Robert W Martin | Tag line control mechanism |
FR2300034A1 (en) * | 1975-02-10 | 1976-09-03 | Yumbo | HYDRAULICALLY CONTROLLED CLAMP |
US5199194A (en) * | 1991-09-30 | 1993-04-06 | C-Core-Centre For Cold Ocean Resources Eng. | Sea bottom sampler |
JP3296355B2 (en) * | 1999-12-21 | 2002-06-24 | 株式会社オノデラ | Hydraulic excavator bucket |
-
2008
- 2008-12-05 EP EP08170866A patent/EP2194193A1/en not_active Withdrawn
-
2009
- 2009-11-30 US US12/998,831 patent/US8607480B2/en active Active
- 2009-11-30 WO PCT/IB2009/055412 patent/WO2010064188A1/en active Application Filing
- 2009-11-30 JP JP2011539146A patent/JP5406307B2/en active Active
- 2009-11-30 EP EP09774965A patent/EP2370643B1/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE590683C (en) * | 1931-10-28 | 1934-01-12 | Naamlooze Vennootschap Havenbe | Self-grabber |
DE1114623B (en) * | 1957-01-14 | 1961-10-05 | Wilhelm Ludowici Dr Ing | Gripper |
DE1123097B (en) * | 1959-11-21 | 1962-02-01 | Taylor & Sons Manchester Ltd F | Bucket gripper with hydraulic drive for swiveling the two bucket halves |
EP0054207A2 (en) * | 1980-12-02 | 1982-06-23 | Serge Vuistiner | Hydraulic device for a soil-shifting machine |
EP0256304A1 (en) | 1986-07-18 | 1988-02-24 | Serge Vuistiner | Soil-working machine |
US5762390A (en) * | 1996-07-16 | 1998-06-09 | Universite Laval | Underactuated mechanical finger with return actuation |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102249145A (en) * | 2011-05-17 | 2011-11-23 | 三一集团有限公司 | Engineering machine and lifting device thereof |
CN102359137A (en) * | 2011-06-30 | 2012-02-22 | 三一重工股份有限公司 | Land scraper and loosening device thereof |
CN102359137B (en) * | 2011-06-30 | 2013-07-17 | 三一重工股份有限公司 | Land scraper and loosening device thereof |
Also Published As
Publication number | Publication date |
---|---|
US8607480B2 (en) | 2013-12-17 |
JP2012511111A (en) | 2012-05-17 |
EP2370643B1 (en) | 2012-11-07 |
US20110283571A1 (en) | 2011-11-24 |
WO2010064188A1 (en) | 2010-06-10 |
EP2370643A1 (en) | 2011-10-05 |
JP5406307B2 (en) | 2014-02-05 |
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