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WO1989003800A1 - Outil monte sur grue - Google Patents

Outil monte sur grue Download PDF

Info

Publication number
WO1989003800A1
WO1989003800A1 PCT/SE1988/000467 SE8800467W WO8903800A1 WO 1989003800 A1 WO1989003800 A1 WO 1989003800A1 SE 8800467 W SE8800467 W SE 8800467W WO 8903800 A1 WO8903800 A1 WO 8903800A1
Authority
WO
WIPO (PCT)
Prior art keywords
implement
claw
members
halves
side members
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.)
Ceased
Application number
PCT/SE1988/000467
Other languages
English (en)
Inventor
Börje BAUMGARTEN
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.)
Hiab Foco AB
Original Assignee
Hiab Foco 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 claimed from SE8704058A external-priority patent/SE459805B/sv
Priority claimed from SE8801999A external-priority patent/SE8801999L/xx
Priority claimed from SE8802000A external-priority patent/SE8802000L/xx
Application filed by Hiab Foco AB filed Critical Hiab Foco AB
Priority to FI901929A priority Critical patent/FI901929A7/fi
Priority to DE19883891057 priority patent/DE3891057T1/de
Publication of WO1989003800A1 publication Critical patent/WO1989003800A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors

Definitions

  • the present invention relates to a crane-mounted implement, in particular a grapple, comprising two hydraulically operated claw-like halves hingedly connected with a supporting frame for pivotal . movement between an open position and a closed position by means of two double-acting hydraulic cylinders, each of said halves having a pair of spaced-apart but mutually connected flat side members whose planes are substantially parallel and of which one side member of one of said pairs can pass closely to and on the inside of a co ⁇ operating side member of said other pair, a device, for example a rotator, being connected or connectible with said frame for suspending the implement from the tip of a crane.
  • the present invention aims at obviating the above- mentioned disadvantages of prior art grappling implements and providing a compact implement of low dead weight. According to the primary characteristic features of the invention, these and other objects are achieved in that the individual hydraulic cylinder is positioned substantially in the same plane as two cooperating and juxtaposedly movable side members on both claw halves and has its cylinder element hingedly connected with one side member and its piston rod hingedly connected with the other side member.
  • this grapple has the same disadvantages as a conventional one-cylinder grapple because each individual hydraulic cylinder operates but one claw half, which means that the construction elements serving to transfer the power from the hydraulic cylinder must be exceedingly sturdy and heavy.
  • a similar grapple suf ⁇ fering from the same disadvantages is disclosed in FR patent specification 2,190,709.
  • the present invention relates to a crane-mounted implement, in particular a grapple, comprising two claw-like halves hingedly connected with a supporting frame for pivotal movement between an open position and a closed position by means of two double- acting hydraulic cylinders, each of said halves having a pair of spaced-apart but mutually connected side mem ⁇ bers, a device, for example a rotator, being connected or connectible with said frame for suspending the i ple- ment from the tip of a crane.
  • a crane-mounted implement in particular a grapple, comprising two claw-like halves hingedly connected with a supporting frame for pivotal movement between an open position and a closed position by means of two double- acting hydraulic cylinders, each of said halves having a pair of spaced-apart but mutually connected side mem ⁇ bers, a device, for example a rotator, being connected or connectible with said frame for suspending the i ple- ment from the tip of a crane.
  • the present invention aims at obviating the above-mentioned disadvantages of prior art grappling implements and providing a compact implement of low dead weight.
  • the invention in a third aspect, relates to a crane- mounted implement, in particular a grapple, comprising two claw-like halves hingedly connected with a supporting frame for pivotal movement between an open position and a closed position, each of said halves having a pair of spaced-apart but mutually connected flat side members whose planes are substantially parallel and of which one side member of one of said pairs can pass closely to and on the inside of a cooperating side member of said other pair, a device, for example a rotator, being connected or conn ⁇ ctible with said frame for sus ⁇ pending the implement from the tip of a crane.
  • the invention aims at obviat ⁇ ing the above-mentioned disadvantage of prior art grap- pling implements and providing an implement which can be manufactured expediently and at low cost.
  • This is achieved, according to the invention, in that two joints forming a geometrical axis about which one claw half is pivotal, are positioned at a different level, relative to the frame, than the joints about which the other claw half is pivotal, whereby all four side members can be manufactured in identical designs.
  • Fig. 1 is a perspective view of the implement according to the invention, the two claw halves being shown in an intermediate position between the maximally open and the maximally closed position;
  • Fig. 2 is a top plan view of the implement shown in
  • Fig. 1; Fig. 3 is a lateral view of the implement; and Fig. 4 is an end view of the implement.
  • a frame generally designated 1 carries two privotal claw halves 2, 3 each comprising a pair of spaced-apart but mutually connected side members
  • the two side members of each such pair are rigidly interconnected via on the one hand a stiffening tube 8 located in the area between the side member end portions and, on the other hand, a plate member 9 at the free end portions of said side members.
  • the frame 1 comprises a lower cross member 10 and two box-shaped structures 11, 11' perpendicular to said cross member and lying in substantially the same plane as the side members 4, 6 and 5, 7, respectively, of the two claw halves 2 and 3.
  • Each box structure includes a piston and cylinder assembly or hydraulic cylinder 12, 12' of conventional double-acting type.
  • Each such hydraulic cylinder thus includes a cylinder element 13 and a piston rod 14. Since the two box structures 11, ll 1 are identical, although mirror inverted, only one of these structures will be described below, reference being had also to Figs 2-4.
  • the individual box structure 11 includes two spaced- apart and substantially parallel elongate plates or plate-like members 15, 16 which, in the area of their lower edges, are located on the transverse box section 10, for example by means of bolted connections to permit dismantling of said plate members.
  • each outer plate member 16 has its inner side engaging with an end of the box section 10 and is screwed thereto, while the inner plate member 15 has an angled lower flange engaging with the upper side of the hollow section and screwed thereto.
  • each U-shaped end member 19, 20 of the cooperating side members 6 , 4 of the two claw halves is in the form of a section which is U-shaped in cross-section and comprises two parallel side flanges 21, 21' and a bottom 22 to the outer side of which a planar plate 23 is welded which in turn is connected with the associated side member via a bolted connection comprising a suitable number of bolts 24 and nuts.
  • Each such bolt unit prefer—ably has a bushing which is inserted in pre-bored holes both in the plate 23 and in the associated side member and which serves to take up any shear forces between these members.
  • Extending between the side flanges 21, 21' of the U member 19 is a pivot pin 25 with which the free end of the piston rod 14 is pivotally connected.
  • the U member 20 has, in analogous manner, a pivot pin 26 with which the rear end of the cylinder element 13 is pivotally connected. As is best seen from Fig. 3, the pivot pins 25, 26 lie in the area of the upper ends of U members 19, 20 and on a level above the principal joints 17, 18.
  • a diagonal strut 28 Mounted between the pivot pin 26 of the U member 20 and a further joint 27 in the area of the lower edge of said U member 19 is a diagonal strut 28 which, in per se known manner, ensures that the two claw halves 2, 3 will move uniformly inwardly and out ⁇ wardly relative to the centre of the implement during operation of the piston and cylinder assemblies 12, 12'.
  • the claw half 3 is but slightly wider than the claw half 2, which means that the side members 4, 5 will pass closely to and on the inside of the corre ⁇ sponding side members 6, 7 of the claw half 3 when the two halves are brought together.
  • Fig. 1 shows that the inner plate members 15 of the box structures 11, 11' have elongate holes 30. Through these holes, the hydraulic hoses (not shown) from the two hydraulic cylinders 12, 12' are passed.
  • Fig. 4 shows a rotator 31 which, in accordance with the invention, is mounted on the transverse hollow sec ⁇ tion 10 of the frame.
  • the walls of the hollow section may be formed with holes 32 within which the conventional and commercially available rotator 31 can be fixed by bolted connections. Since the hollow section 10 lies on a lower level than the surrounding hollow structures 11, 11* and the hydraulic cylinders 12, 12' therein, the overall height of the implement will be minimal.
  • the grapple as disclosed herein operates as follows. Upon inward movement of the pistons in the hydraulic cylinders 12, 12', the U-shaped end members 19, 20 of the respective cylinder will pivot about the associated pincipal joints 17, 18 while carrying the claw halves 2, 3 along, such that these are swung in an outward direction into open position. Upon outward movement of the pistons in the hydraulic cylinders, the claw halves will be swung in an inward direction into closed position. In their inner end positions as shown by the broken lines in Fig..3, the claw halves 2, 3 will define, together with the underside of the frame, a very small space 33, and this means that the grapple is capable of handling also very small objects, for example a single and slender young tree.
  • a particular advantage of the grapple according to the invention is that each of the two hydraulic cyl ⁇ inders operates in the same plane as the side members of the claw halves, which means that the power can be transmitted directly between the hydraulic cylinders and the said side members, and this in turn means that the entire construction can be relieved of the heavy type of power transmission means required on conventional grapples having but one cylinder. Furthermore, since. the power is transmitted in the same plane as the side members of the claw halves, both hydraulic cylinders can be relatively small and ' yet give adequate gripping power.
  • a further advantage of the g-rapple according to the invention is the low overall height which has been mentioned above and which, in actual service, gives an increased carrying capacity to which must be added the increased carrying capacity that has already been obtained by the lower dead weight of the grapple.
  • maintenance of the grapple is greatly facili ⁇ tated because the bolted connections 24 allow the two claw halves to be readily dismantled from the rest of the implement.
  • the production costs of the grapple according to the invention are reduced considerably as compared with conventional grapples, not only because less material is required, but also because the side members of the claw halves can be given one and the same standard design. It is obvious that the invention is not restricted to the embodiment described above and illustrated in the drawings.
  • the inventive concept is applicable also to other crane-mounted implements than timber grap- pies.
  • the implement may be a bucket, in which case one simply has to enlarge the side members of the claw halves and to mount a couple of plates ex ⁇ tending from the lower free ends of the side members to the area of the upper ends thereof, possibly while dispensing with the stiffening tubes illustrated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

Un outil monté sur grue comporte deux moitiés en forme de griffes (2, 3) à commande hydraulique et reliées de manière articulée avec un cadre de support (1). Chaque moitié possède une paire d'éléements latéraux (4, 5, 6, 7) espacés mais mutuellement reliés, dont les plans sont sensiblement parallèles, un élément latéral de l'une desdites paires pouvant passer à proximité et sur l'intérieur d'un élément latéral concourant de ladite autre paire. Deux vérins (12, 12') permettent le pivotement des deux moitiés en forme de griffes entre une position ouverte et une position fermée; chacun de ces vérins est positionné dans les mêmes plans que deux éléments latéraux (4, 6; 5, 7) concourants et déplaçables de manière juxtaposée sur les moitiés, l'élément vérin (13) de chaque vérin étant relié de manière articulée avec un élément latéral, et sa tige de piston étant reliée de manière articulée avec l'autre élément latéral.
PCT/SE1988/000467 1987-10-19 1988-09-12 Outil monte sur grue Ceased WO1989003800A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI901929A FI901929A7 (fi) 1987-10-19 1988-09-12 Nosturiin asennettu työkalu
DE19883891057 DE3891057T1 (de) 1987-10-19 1988-09-12 Geraet zur befestigung an einem krahn

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
SE8704058A SE459805B (sv) 1987-10-19 1987-10-19 Kranburet arbetsredskap
SE8704058-0 1987-10-19
SE8801999A SE8801999L (en) 1987-10-19 1988-05-30 Crane grapple arrangement - has two claw halves opened and closed by horizontal, parallel hydraulic cylinders acting on hinged side plates
SE8802000A SE8802000L (en) 1987-10-19 1988-05-30 Crane grapple arrangement - has two claw halves opened and closed by horizontal, parallel hydraulic cylinders acting on hinged side plates
SE8801999-7 1988-05-30
SE8802000-3 1988-05-30

Publications (1)

Publication Number Publication Date
WO1989003800A1 true WO1989003800A1 (fr) 1989-05-05

Family

ID=27355408

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000467 Ceased WO1989003800A1 (fr) 1987-10-19 1988-09-12 Outil monte sur grue

Country Status (3)

Country Link
AU (1) AU2602888A (fr)
FI (1) FI901929A7 (fr)
WO (1) WO1989003800A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712512A1 (fr) * 2005-04-14 2006-10-18 Caterpillar Work Tools B. V. Dispositif pour ouvrir et fermer une pince de préhension
RU2539618C1 (ru) * 2013-09-13 2015-01-20 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "Производственное объединение им. И. Бушуева" Многочелюстной грейфер
CN107826970A (zh) * 2017-09-12 2018-03-23 远景能源（江苏）有限公司 风力发电机组单叶片安装吊具

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621428A (en) * 1946-06-21 1952-12-16 Roy O Billings Clamshell bucket
FR2190709A2 (fr) * 1972-06-29 1974-02-01 Etu Realisa Mec Appliqu
FR2236769A1 (en) * 1973-07-09 1975-02-07 Satime Armee Easily dismantled crane grapple for logs - has horiz. pivoting ram and reaction rod between curved jaws
WO1981000396A1 (fr) * 1979-08-09 1981-02-19 Caterpillar Tractor Co Grappin
EP0054207A2 (fr) * 1980-12-02 1982-06-23 Serge Vuistiner Dispositif hydraulique pour engin de terrassement
SE425236B (sv) * 1978-06-27 1982-09-13 Hiab Foco Ab Pa kranarm anbringbar gripare
DK145292B (da) * 1972-12-20 1982-10-25 Saipem Spa Hydropneumatisk aktiveret loeftetang til loeftning af nedsaenkede roer
SE437145B (sv) * 1981-10-07 1985-02-11 Jan Eriksson Anordning for behandling av tred eller tredstammar
SE444305B (sv) * 1983-04-06 1986-04-07 Jan Eriksson Gripare med tva mot och fran varandra svengbart rorliga griparmar

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621428A (en) * 1946-06-21 1952-12-16 Roy O Billings Clamshell bucket
FR2190709A2 (fr) * 1972-06-29 1974-02-01 Etu Realisa Mec Appliqu
DK145292B (da) * 1972-12-20 1982-10-25 Saipem Spa Hydropneumatisk aktiveret loeftetang til loeftning af nedsaenkede roer
FR2236769A1 (en) * 1973-07-09 1975-02-07 Satime Armee Easily dismantled crane grapple for logs - has horiz. pivoting ram and reaction rod between curved jaws
SE425236B (sv) * 1978-06-27 1982-09-13 Hiab Foco Ab Pa kranarm anbringbar gripare
WO1981000396A1 (fr) * 1979-08-09 1981-02-19 Caterpillar Tractor Co Grappin
EP0054207A2 (fr) * 1980-12-02 1982-06-23 Serge Vuistiner Dispositif hydraulique pour engin de terrassement
SE437145B (sv) * 1981-10-07 1985-02-11 Jan Eriksson Anordning for behandling av tred eller tredstammar
SE444305B (sv) * 1983-04-06 1986-04-07 Jan Eriksson Gripare med tva mot och fran varandra svengbart rorliga griparmar

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT NO. G 2472D/27; & SU,A,770 996. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712512A1 (fr) * 2005-04-14 2006-10-18 Caterpillar Work Tools B. V. Dispositif pour ouvrir et fermer une pince de préhension
RU2539618C1 (ru) * 2013-09-13 2015-01-20 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "Производственное объединение им. И. Бушуева" Многочелюстной грейфер
CN107826970A (zh) * 2017-09-12 2018-03-23 远景能源（江苏）有限公司 风力发电机组单叶片安装吊具
CN107826970B (zh) * 2017-09-12 2023-11-21 远景能源（江苏）有限公司 风力发电机组单叶片安装吊具

Also Published As

Publication number Publication date
AU2602888A (en) 1989-05-23
FI901929A0 (fi) 1990-04-17
FI901929A7 (fi) 1990-04-17

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