FR2744740A1 - Exchangeable bucket for excavator - has carriers connected between joints to transversely extending tube which on both sides of carrier is provided with parallel protruding flanges - Google Patents

Exchangeable bucket for excavator - has carriers connected between joints to transversely extending tube which on both sides of carrier is provided with parallel protruding flanges Download PDF

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Publication number
FR2744740A1
FR2744740A1 FR9700957A FR9700957A FR2744740A1 FR 2744740 A1 FR2744740 A1 FR 2744740A1 FR 9700957 A FR9700957 A FR 9700957A FR 9700957 A FR9700957 A FR 9700957A FR 2744740 A1 FR2744740 A1 FR 2744740A1
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FR
France
Prior art keywords
jaws
support
clamshell
bucket
profiles
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.)
Granted
Application number
FR9700957A
Other languages
French (fr)
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FR2744740B1 (en
Inventor
Rolf Mieger
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.)
Liebherr Hydraulikbagger GmbH
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Liebherr Hydraulikbagger GmbH
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Filing date
Publication date
Priority claimed from DE29601644U external-priority patent/DE29601644U1/en
Application filed by Liebherr Hydraulikbagger GmbH filed Critical Liebherr Hydraulikbagger GmbH
Publication of FR2744740A1 publication Critical patent/FR2744740A1/en
Application granted granted Critical
Publication of FR2744740B1 publication Critical patent/FR2744740B1/en
Anticipated expiration legal-status Critical
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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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3631—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a transversal locking element
    • 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
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3636—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3668—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where engagement is effected by a mechanical lever or handle
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3672—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle
    • 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
    • E02F3/4135—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device with grabs mounted directly on a boom

Abstract

The bucket (1) has carriers (6) connected between joints (15,16) to a transversely extending tube (12) which on both sides of the carrier is provided with parallel protruding flanges. Two support sections are located in the upper edge region of each bucket shell (7), are parallel to each other, and connected to the side walls. The flanges on their ends are provided with recesses complementary to the support sections. Extendable and retractable locking pins are located in the tube and engage in holes in the side walls or in brackets connecting the support sections.

Description

i L'invention se rapporte à une benne preneusei The invention relates to a clamshell bucket

interchangeable à deux mâchoires.interchangeable with two jaws.

Des bennes preneuses à deux mâchoires habituelles et en particulier des bennes preneuses à deux mâchoires susceptibles d'être accouplées au bras de pelles mécaniques doivent pouvoir être interchangeables en cas d'usure ou pour l'échange contre des bennes preneuses à deux mâchoires d'autres tailles. Habituellement, un tel échange est effectué par le fait que la bennes preneuse à deux mâchoires est échangée avec son porte-mâchoires et son dispositif tournant, y compris le moteur tournant. Un tel échange de l'unité complète de la benne preneuse à deux mâchoires est par principe facile et rapide à effectuer. Cependant, cet échange est complexe dans la mesure o l'on doit mettre à disposition des unités complètes de bennes preneuses à deux mâchoires, ce  Standard two-jaw clamshells and in particular two-jaw clamshells capable of being coupled to the arm of mechanical shovels must be capable of being interchangeable in the event of wear or for exchange for clamshell clamshells of other jaws sizes. Usually, such an exchange is carried out by the fact that the clamshell bucket with two jaws is exchanged with its jaw holder and its rotating device, including the rotating engine. Such an exchange of the complete unit of the clamshell bucket with two jaws is in principle easy and quick to carry out. However, this exchange is complex in that it is necessary to make available complete units of clamshells with two jaws, which

qui cause des coûts d'investissement accrus.  which causes increased investment costs.

On connaît des bennes preneuses à deux mâchoires comportant un portemâchoires auquel sont articulés deux supports susceptibles d'être basculés par au moins un cylindre hydraulique o les mâchoires de bennes preneuse peuvent être accouplées auxdits supports, par exemple par le document DE-34 25 542 A1 et le modèle d'utilité allemand  Clamshell buckets with two jaws are known comprising a jaw holder to which two supports are articulated which can be tilted by at least one hydraulic cylinder where the clamshell jaws can be coupled to said supports, for example by document DE-34 25 542 A1 and the German utility model

295 05 222.8295 05 222.8

L'objectif sous-jacent à l'invention est de réaliser une benne preneuse à deux mâchoires du type mentionné en introduction, que l'on peut échanger avec un investissement plus faible lors d'une usure ou pour l'échange contre des  The objective underlying the invention is to produce a clamshell with two jaws of the type mentioned in the introduction, which can be exchanged with a lower investment during wear or for exchange for

tailles différentes.different sizes.

Conformément à l'invention, cet objectif est atteint par le fait que chaque support est relié entre ses articulations à un tube transversal qui est pourvu, des deux côtés du support, de barrettes en porte-à-faux et parallèles à celui-ci, que deux profilés de support reliés aux parois latérales et parallèles l'un à l'autre sont agencés dans la région marginale supérieure de chaque mâchoire, et les barrettes sont pourvues à leurs extrémités d'évidements complémentaires aux profilés de support, par lesquels elles enserrent les profilés de support, et que des goujons de verrouillage déployables et rétractables sont agencés dans le tube, qui s'engagent dans des perçages des parois latérales  According to the invention, this objective is achieved by the fact that each support is connected between its articulations to a transverse tube which is provided, on both sides of the support, with cantilevered bars parallel to the latter, that two support profiles connected to the side walls and parallel to each other are arranged in the upper marginal region of each jaw, and the bars are provided at their ends with recesses complementary to the support profiles, by which they enclose the support profiles, and that deployable and retractable locking studs are arranged in the tube, which engage in holes in the side walls

ou dans des pattes reliant les profilés de support.  or in lugs connecting the support profiles.

Dans la penne preneuse à deux mâchoires conforme à l'invention, l'investissement nécessaire pour un échange est tout considérablement réduit, parce qu'il suffit d'échanger uniquement les mâchoires de benne preneuse elles-mêmes qui  In the two-jaw clamshell according to the invention, the investment required for an exchange is all considerably reduced, because it suffices to exchange only the clamshell jaws themselves which

sont soumises à l'usure ou dont on doit changer la taille.  are subject to wear or whose size must be changed.

Dans la benne preneuse à deux mâchoires conforme à l'invention, on a prévu sur le porte-mâchoires des éléments d'accouplement faisant basculer les mâchoires, qui demeurent par leurs entraînements de basculement sur le porte-mâchoires et qui sont reliés à des éléments d'accouplement complémentaires des mâchoires, de sorte que pour échanger les mâchoires, il suffit d'échanger uniquement les mâchoires elles-mêmes. Dans une benne preneuse à deux mâchoires conforme à l'invention, on échange donc uniquement les mâchoires respectives, mais non pas leurs entraînements de  In the clamshell bucket with two jaws according to the invention, there are provided on the jaw holder coupling elements causing the jaws to tilt, which remain by their tilting drives on the jaw holder and which are connected to elements complementary coupling of the jaws, so that to exchange the jaws, it is sufficient to exchange only the jaws themselves. In a clamshell bucket with two jaws according to the invention, therefore, only the respective jaws are exchanged, but not their drive

basculement et de rotation.tilting and rotating.

Judicieusement, les profilés de support sont constitués  Appropriately, the support profiles are made

par des tubes.by tubes.

Dans un autre développement de l'invention, on prévoit que les faces intérieures des pattes reliant les profilés de support présentent un écart les unes des autres, qui correspond à l'écart des faces extérieures des barrettes. De  In another development of the invention, it is provided that the inner faces of the tabs connecting the support profiles have a distance from one another, which corresponds to the distance from the external faces of the bars. Of

cette manière, les éléments d'accouplement reliés au porte-  In this way, the coupling elements connected to the holder

mâchoires peuvent être reliés d'une manière particulièrement favorable et ferme aux éléments d'accouplement complémentaires des mâchoires, qui sont formés par les  jaws can be connected in a particularly favorable and firm manner to the complementary coupling elements of the jaws, which are formed by

profilés de support et par les pattes.  support profiles and by the legs.

Judicieusement, on visse dans les goujons de verrouillage une broche présentant aux extrémités des filetages opposés, dont un côté est accessible par des perçages, de sorte qu'elle peut être actionnée par une clé à enfichage. Au moyen d'une clé à enfichage pourvue judicieusement d'une manivelle, on peut alors déployer et rétracter les goujons de verrouillage. Après l'accouplement, on peut refermer le perçage qui traverse également une paroi latérale de chaque benne preneuse par un bouchon, de sorte  Judiciously, a pin is screwed into the locking studs having opposite threads at the ends, one side of which is accessible by holes, so that it can be actuated by a plug-in key. By means of a plug-in key judiciously provided with a crank, it is then possible to deploy and retract the locking studs. After coupling, you can close the hole which also passes through a side wall of each clamshell with a plug, so

qu'il ne peut pas se boucher pendant le fonctionnement.  that it cannot become clogged during operation.

Un exemple de réalisation de l'invention sera expliqué  An embodiment of the invention will be explained

plus en détail dans ce qui suit en se rapportant aux dessins.  in more detail below with reference to the drawings.

Les figures montrent: - la figure 1 une vue latérale du porte-mâchoires  The figures show: - Figure 1 a side view of the jaw holder

auquel on peut accoupler les deux mâchoires illustrées au-  to which the two jaws illustrated above can be coupled

dessous de celui-ci; - la figure 2 une illustration correspondante à la figure 1 du porte-mâchoires présentant des mâchoires de bennes accouplées; - la figure 3 une vue de dessus sur un support susceptible d'être basculé du porte-mâchoires, présentant les dispositifs d'accouplement pour accoupler une mâchoire de benne preneuse à l'état rétracté des goujons de verrouillage, partiellement en coupe; - la figure 4 une illustration correspondante à la figure 3 du support présentant les dispositifs d'accouplement à l'état déployé des goujons de verrouillage; - la figure 5 une vue latérale du support présentant les dispositifs d'accouplement; la figure 6 une vue de dessus sur une mâchoire de benne preneuse à accoupler au support; - la figure 7 une vue latérale des mâchoires de benne preneuse selon la figure 6; - la figure 8 une vue de dessus correspondant à celle de la figure 6 sur les mâchoires de benne preneuse présentant un support accouplé à celles-ci; et - la figure 9 une vue latérale de la mâchoire de benne  below it; - Figure 2 an illustration corresponding to Figure 1 of the jaw holder having jaws of coupled buckets; - Figure 3 a top view on a support capable of being tilted of the jaw holder, showing the coupling devices for coupling a clamshell jaw in the retracted state of the locking studs, partially in section; - Figure 4 an illustration corresponding to Figure 3 of the support having the coupling devices in the deployed state of the locking studs; - Figure 5 a side view of the support having the coupling devices; Figure 6 a top view on a clamshell jaw to be coupled to the support; - Figure 7 a side view of the clamshell jaws according to Figure 6; - Figure 8 a top view corresponding to that of Figure 6 on the clamshell jaws having a support coupled to them; and - Figure 9 a side view of the bucket jaw

preneuse selon la figure 8.gripper according to figure 8.

Le porte-mâchoires 1 est constitué par une partie de boîtier supérieure 2 qui est pourvue d'un oeillet de support 3 pour l'application contre un bras de pelle, et d'un moteur  The jaw holder 1 consists of an upper housing part 2 which is provided with a support eyelet 3 for application against a shovel arm, and with a motor

hydraulique 4 pour tourner le porte-mâchoires. Le porte-  hydraulic 4 to turn the jaw holder. The door-

mâchoires présente une partie de support centrale 5, et sur ses côtés inférieurs en forme de T sont articulés des supports basculants 6 présentant des éléments d'accouplement pour accoupler les mâchoires de benne preneuse 7 par leurs extrémités intérieures. Les extrémités extérieures des supports sont articulées à des tiges de piston de cylindres 9, qui sont reliés en articulation à un élément supérieur en T du porte-mâchoires et qui servent à l'ouverture et à la fermeture des mâchoires de benne preneuse. Mis à part les éléments d'accouplement pour accoupler les mâchoires de benne preneuse 7, le porte-mâchoires est d'un type de construction connu, de sorte que celui-ci ne sera pas décrit plus en détail. Les supports basculants 6 présentant les éléments d'accouplement pour accoupler les mâchoires de benne preneuse 7 sont maintenant décrits plus en détail en se rapportant aux  jaws has a central support part 5, and on its T-shaped lower sides are articulated tilting supports 6 having coupling elements for coupling the clamshell jaws 7 by their inner ends. The outer ends of the supports are articulated to piston rods of cylinders 9, which are hingedly connected to an upper T-shaped element of the jaw holder and which are used for opening and closing the clamshell jaws. Apart from the coupling elements for coupling the clamshell jaws 7, the jaw holder is of a known type of construction, so that it will not be described in more detail. The tilting supports 6 presenting the coupling elements for coupling the clamshell jaws 7 are now described in more detail with reference to the

figures 4 à 6.Figures 4 to 6.

Deux pattes 28 sont soudées parallèlement l'une à l'autre sur un tronçon tubulaire 12; elles sont pourvues de perçages de montage 15 en alignement. Les côtés en T de la partie de support 5 sont montés en basculement par des goujons de montage 17 sur les pattes 28. Sur les côtés de montage agencés au milieu en vis-à-vis, qui sont pourvus des perçages de montage 16, on a monté de la manière visible à la figure 1 les tiges de piston des cylindres d'ouverture et de  Two tabs 28 are welded parallel to each other on a tubular section 12; they are provided with mounting holes 15 in alignment. The T-shaped sides of the support part 5 are pivotally mounted by mounting studs 17 on the lugs 28. On the mounting sides arranged in the middle opposite, which are provided with mounting holes 16, has mounted visibly in Figure 1 the piston rods of the opening cylinders and

fermeture par des goujons de montage 18.  fastening with mounting studs 18.

On a soudé aux extrémités sur le tube 12 des tôles de barrette 20 qui dépassent celui-ci des deux côtés et qui sont pourvues sur leurs faces inférieures d'évidements 21 en forme  Strips 20 which protrude from both sides are welded to the ends of the tube 12 and which are provided with shaped recesses 21 on their undersides

de coque.hull.

Des goujons de verrouillage 22, 23 déployables et rétractables en sens opposé sont guidés dans le perçage du tube 12, et ils sont pourvus de perçages de passage. Dans leurs régions d'extrémité orientées les unes vers les autres, les perçages de goujons de verrouillage sont pourvus de taraudages dans lesquels est vissée une broche 24 présentant des filetages opposés. La broche 24 est pourvue à ses extrémités de têtes en forme d'écrou sur lesquelles on peut enficher une clé à enfichage 25 pourvue d'une manivelle, de sorte que l'on peut actionner la broche 24 par la clé à enfichage 25 depuis les deux côtés. Afin de bloquer les goujons de verrouillage 22, 23 dans le perçage à l'encontre d'une rotation ou d'une chute, ceux-ci sont pourvus de gorges dans lesquelles s'engagent des vis radiales 26 vissées dans le tube 12 par leurs extrémités traversant l'enveloppe du tube. Parallèlement aux tôles de barrette 20, on a agencé en direction de la partie de support 5 les pattes 28 qui sont unilatéralement en porte-à-faux et soudées avec le tube 12,  Locking studs 22, 23 deployable and retractable in the opposite direction are guided in the bore of the tube 12, and they are provided with through bores. In their end regions oriented towards one another, the holes in the locking studs are provided with threads into which is screwed a pin 24 having opposite threads. The spindle 24 is provided at its ends with nut-shaped heads on which a plug-in key 25 provided with a crank can be inserted, so that the pin 24 can be actuated by the plug-in key 25 from the two sides. In order to block the locking studs 22, 23 in the drilling against rotation or falling, these are provided with grooves in which engage radial screws 26 screwed into the tube 12 by their ends passing through the envelope of the tube. Parallel to the bar sheets 20, the tabs 28 which are unilaterally cantilevered and welded with the tube 12, are arranged in the direction of the support part 5,

et contre lesquelles est goujonnée la partie de support 5.  and against which the support part 5 is doweled.

Des tubes 32, 33 parallèles l'un à l'autre sont soudés contre les parois latérales 30, 31 de chaque mâchoire de benne preneuse 7, qui sont pourvus de pattes soudées 34, 35 à distance des parois latérales. Ces pattes sont pourvues de perçages 36 en alignement, dans lesquels on peut rétracter  Tubes 32, 33 parallel to each other are welded against the side walls 30, 31 of each clamshell jaw 7, which are provided with welded legs 34, 35 at a distance from the side walls. These legs are provided with holes 36 in alignment, in which one can retract

les goujons de verrouillage 22, 23 pour le verrouillage.  the locking studs 22, 23 for locking.

Les évidements 21 en forme de coque des tôles de barrettes 20 présentent un écart correspondant à l'écart des tubes 32, 33 et le coudage des évidements 21 en forme de  The shell-shaped recesses 21 of the bar sheets 20 have a distance corresponding to the distance from the tubes 32, 33 and the bending of the recesses 21 in the form of

coque est adapté au rayon des tubes 32, 33.  shell is adapted to the radius of the tubes 32, 33.

Pour accoupler les mâchoires 7 aux supports basculants 6, il suffit donc de poser les supports 6 par leurs éléments d'accouplement de telle sorte que les tubes 32, 33, que les évidements 21 en forme de coque enserrent les tubes et que les tôles des barrettes 20 s'appuient par leurs faces extérieures contre les faces intérieures des pattes 36, de sorte qu'en déployant les goujons de verrouillage 22, 23 jusque dans les perçages 36, on peut réaliser la liaison d'accouplement entre les supports et les mâchoires de benne preneuse. Après l'accouplement et l'extraction de la clé à enfichage 25, le boulon 40 est introduit depuis l'extérieur à travers un perçage dans la paroi latérale de la benne preneuse jusque dans le perçage du goujon de verrouillage, et  To couple the jaws 7 to the tilting supports 6, it suffices therefore to place the supports 6 by their coupling elements so that the tubes 32, 33, that the shell-shaped recesses 21 enclose the tubes and that the sheets of the bars 20 are supported by their outer faces against the inner faces of the legs 36, so that by deploying the locking studs 22, 23 as far as the holes 36, it is possible to make the coupling connection between the supports and the jaws grab bucket. After coupling and extraction of the plug-in key 25, the bolt 40 is introduced from the outside through a hole in the side wall of the clamshell as far as the hole in the locking pin, and

il est serré.it is tight.

Claims (4)

REVENDICATIONS 1. Benne preneuse interchangeable à deux mâchoires, comportant un portemâchoires (1) auquel sont articulés deux supports (6) susceptibles d'être basculés par au moins un cylindre hydraulique o les mâchoires de benne preneuse (7) peuvent être accouplées auxdits supports, caractérisée en ce que chaque support (6) est relié entre ses articulations (15, 16) à un tube transversal (12) qui est pourvu, des deux côtés du support (6), de barrettes parallèles (20) en porte-à-faux, en ce que deux profilés de support (32, 33) reliés au parois latérales (30, 31) et mutuellement parallèles sont agencés dans la région marginale supérieure de chaque mâchoire de benne preneuse (7), et les barrettes (20) sont pourvues à leurs extrémités d'évidements (21) complémentaires aux profilés de support par lesquels elles enserrent les profilés de support (32, 33), et en ce que des goujons de verrouillage (22, 23) déployables et rétractables sont agencés dans le tube, qui s'engagent dans des perçages (36) des parois latérales ou dans des pattes (34, 35) reliant les profilés de  1. Interchangeable clamshell bucket with two jaws, comprising a jaw-holder (1) to which two supports (6) are articulated capable of being tilted by at least one hydraulic cylinder o the clamshell jaws (7) can be coupled to said supports, characterized in that each support (6) is connected between its articulations (15, 16) to a transverse tube (12) which is provided, on both sides of the support (6), with parallel bars (20) in overhang , in that two support profiles (32, 33) connected to the side walls (30, 31) and mutually parallel are arranged in the upper marginal region of each clamshell jaw (7), and the bars (20) are provided at their ends of recesses (21) complementary to the support profiles by which they enclose the support profiles (32, 33), and in that deployable and retractable locking studs (22, 23) are arranged in the tube, who got involved gent in holes (36) in the side walls or in lugs (34, 35) connecting the profiles of support (32, 33).support (32, 33). 2. Benne preneuse à deux mâchoires selon la revendication 1, caractérisée en ce que les profilés de  2. Clamshell bucket with two jaws according to claim 1, characterized in that the profiles of support sont constitués par des tubes (32, 33).  support are constituted by tubes (32, 33). 3. Benne preneuse à deux mâchoires selon l'une des  3. Clamshell bucket with two jaws according to one of the revendications 1 ou 2, caractérisée en ce que les faces  claims 1 or 2, characterized in that the faces intérieures des pattes (34, 35) reliant les profiles de support présentent un écart les unes des autres, qui correspond à l'écart des faces extérieures des barrettes (20).  inside of the tabs (34, 35) connecting the support profiles have a distance from each other, which corresponds to the distance from the external faces of the bars (20). 4. Benne preneuse à deux mâchoires selon l'une des4. Clamshell bucket with two jaws according to one of the revendications 1 à 3, caractérisée en ce qu'une broche (24)  Claims 1 to 3, characterized in that a spindle (24) présentant aux extrémités des filetages opposés est vissée dans les goujons de verrouillage (22, 23), dont au moins un côté est accessible par des perçages, de sorte qu'elle peut  having opposite threads at the ends is screwed into the locking studs (22, 23), at least one side of which is accessible by holes, so that it can être actionnée par une clé à enfichage (25).  be operated by a plug-in key (25).
FR9700957A 1996-01-31 1997-01-29 INTERCHANGEABLE GRIPPER WITH TWO JAWS Expired - Lifetime FR2744740B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29601644U DE29601644U1 (en) 1996-01-31 1996-01-31 Interchangeable clamshell bucket
DE19643892A DE19643892B4 (en) 1996-01-31 1996-10-30 Interchangeable clamshell grab

Publications (2)

Publication Number Publication Date
FR2744740A1 true FR2744740A1 (en) 1997-08-14
FR2744740B1 FR2744740B1 (en) 1999-03-26

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FR9700957A Expired - Lifetime FR2744740B1 (en) 1996-01-31 1997-01-29 INTERCHANGEABLE GRIPPER WITH TWO JAWS

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FR (1) FR2744740B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115303955A (en) * 2022-08-23 2022-11-08 浙江浙起机械有限公司 Large-tonnage grab bucket bridge crane

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7900631A (en) * 1979-01-26 1980-07-29 Interparts B V Hydraulic crane retainer fixture to scoop - comprises pin and hook swivel arrangement also pressure cylinder with end pins to fit in spaced lugs
GB2132584A (en) * 1982-12-24 1984-07-11 Dobson Park Ind Releasable connection device
DE9315868U1 (en) * 1993-10-18 1995-02-16 Liebherr Hydraulikbagger clutch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7900631A (en) * 1979-01-26 1980-07-29 Interparts B V Hydraulic crane retainer fixture to scoop - comprises pin and hook swivel arrangement also pressure cylinder with end pins to fit in spaced lugs
GB2132584A (en) * 1982-12-24 1984-07-11 Dobson Park Ind Releasable connection device
DE9315868U1 (en) * 1993-10-18 1995-02-16 Liebherr Hydraulikbagger clutch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115303955A (en) * 2022-08-23 2022-11-08 浙江浙起机械有限公司 Large-tonnage grab bucket bridge crane
CN115303955B (en) * 2022-08-23 2024-03-29 浙江浙起机械有限公司 Large-tonnage grab bridge crane

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Publication number Publication date
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