FR2706920A1 - Clamp for gripping, handling and positioning constructional elements such as kerbstones - Google Patents

Clamp for gripping, handling and positioning constructional elements such as kerbstones Download PDF

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Publication number
FR2706920A1
FR2706920A1 FR9307943A FR9307943A FR2706920A1 FR 2706920 A1 FR2706920 A1 FR 2706920A1 FR 9307943 A FR9307943 A FR 9307943A FR 9307943 A FR9307943 A FR 9307943A FR 2706920 A1 FR2706920 A1 FR 2706920A1
Authority
FR
France
Prior art keywords
jaws
clamp
clamp according
gripping
handling
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.)
Pending
Application number
FR9307943A
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French (fr)
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.)
BRICAUD MOTOR
Original Assignee
BRICAUD MOTOR
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 BRICAUD MOTOR filed Critical BRICAUD MOTOR
Priority to FR9307943A priority Critical patent/FR2706920A1/en
Publication of FR2706920A1 publication Critical patent/FR2706920A1/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/445Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated
    • B66C1/447Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated by hydraulic or pneumatic motors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/425Gripping members engaging only the external or internal surfaces of the articles motor actuated
    • B66C1/427Gripping members engaging only the external or internal surfaces of the articles motor actuated by hydraulic or pneumatic motors
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/52Apparatus for laying individual preformed surfacing elements, e.g. kerbstones
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • E04G21/16Tools or apparatus
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • E04G21/16Tools or apparatus
    • E04G21/167Tools or apparatus specially adapted for working-up plates, panels or slab shaped building elements

Abstract

The present invention relates to a clamp intended to be attached to at least one traction cable (7), for gripping, handling and positioning constructional elements such as concrete or granite blocks, of the type including two clamping jaws (11, 11') capable of being moved together or away from each other with a view to grasping or positioning an element. This clamp is noteworthy in that it includes two double-acting jacks (3, 3') mounted head-to-tail, the respective rods of which are articulated onto the said jaws (11, 11').

Description

PINCE DE SERRAGE POUR LA PREHENSION, LA MANUTENTION
ET LA POSE D'ELEMENTS DE CONSTRUCTION TELS
QUE DES BORDURES DE TROTTOIR
La présente invention concerne une pince de serrage destinée à être attachée à au moins un câble de support, pour la préhension, la manutention et la pose d'éléments de construction tels que des blocs de béton ou de granit.
TIGHTENING PLIERS FOR GRIPPING, HANDLING
AND THE INSTALLATION OF CONSTRUCTION ELEMENTS SUCH
ON SIDEWALK EDGES
The present invention relates to a collet intended to be attached to at least one support cable, for gripping, handling and laying of construction elements such as concrete or granite blocks.

Par l'expression "élément de construction", on entend aussi bien des éléments destinés à la construction de bâtiments, tels que des parpaings, que des éléments de construction de trottoirs, etc. By the expression "building element" is meant both elements intended for the construction of buildings, such as concrete blocks, as sidewalk construction elements, etc.

Cette pince de serrage est particulièrement adaptée à la pose des bordures de trottoir. This clamp is particularly suitable for the installation of curbs.

On a déjà proposé de telles pinces. Généralement, elles réalisent un serrage automatique du bloc à déplacer, lorsqu'on exerce sur le câble un effort de traction en vue de soulever la pince. Such clamps have already been proposed. Generally, they carry out an automatic tightening of the block to be moved, when a pulling force is exerted on the cable in order to lift the clamp.

Ces pinces présentent de nombreux inconvénients. These pliers have many drawbacks.

Parmi ceux-ci, on peut citer le fait qutelles comprennent le plus souvent de nombreuses pièces mécaniques, ce qui rend leur réparation et leur entretien fastidieux. Among these, we can cite the fact that most often include many mechanical parts, which makes their repair and maintenance tedious.

De plus, lorsqu'une pince saisit un élément à déplacer, elle continue à se soulever de sorte qu'il s'opère un glissement des mors par rapport à l'élément. Les risques de décrochage en cours de manutention sont donc élevés. In addition, when a clamp grabs an element to be moved, it continues to lift so that there is a sliding of the jaws relative to the element. The risks of stalling during handling are therefore high.

Par ailleurs, lorsqu'un élément est posé, les mors ne s'ouvrent pas totalement et il arrive que l'élément soit saisi à nouveau par ceux-ci lors de la remontée de la pince. Furthermore, when an element is placed, the jaws do not fully open and it sometimes happens that the element is gripped again by them when the clamp is raised.

Enfin, à l'occasion du déplacement à vide de la pince, les mors ont tendance à se rapprocher l'un de l'autre, en raison du poids de la pince, ce qui nécessite des manipulations additionnelles pour la saisie de l'élément suivant. Finally, when the clamp is moved empty, the jaws tend to approach one another, due to the weight of the clamp, which requires additional manipulations for gripping the element. following.

L'invention a pour but de proposer une nouvelle pince qui permette de pallier ces inconvénients. The invention aims to provide a new clamp which overcomes these drawbacks.

Il s'agit d'une pince de conception simple, facile à manipuler et qui permet de saisir des éléments de construction, sans risque de décrochage intempestif.  It is a pliers of simple design, easy to handle and which allows to seize building elements, without risk of untimely stalling.

Cette pince, du type évoqué ci-dessus et comprenant deux mors de serrage pouvant être rapprochés ou écartés l'un de l'autre en vue de la saisie ou de la pose d'un élément, se caractérise par le fait qu'elle comporte deux vérins à double effet montés tête-bêche dont les tiges respectives sont articulées sur lesdits mors. This clamp, of the type mentioned above and comprising two clamping jaws which can be moved towards or away from one another for the purpose of gripping or placing an element, is characterized by the fact that it comprises two double-acting cylinders mounted head to tail, the respective rods of which are articulated on said jaws.

De cette façon, lorsque l'on a plaqué les deux mors sur les faces opposées d'un élément à soulever, le serrage est permanent et les risques de décrochage sont pratiquement réduits à zéro. In this way, when the two jaws have been placed on the opposite faces of an element to be lifted, the tightening is permanent and the risks of stalling are practically reduced to zero.

Par ailleurs, selon d'autres caractéristiques avantageuses mais non limitatives
- la pince de serrage comprend des moyens de guidage des mors lors de leur déplacement
- ces moyens de guidage comprennent des canaux formés dans un châssis, à l'intérieur desquels coulissent des éléments solidaires desdits mors
- les éléments consistent en un tube creux et une tige parallèles entre eux et solidaires d'un mors, la tige d'un des mors pouvant coulisser à l'intérieur du tube de l'autre mors et réciproquement
- lesdits vérins sont de type hydraulique
- la face interne des mors comporte des aspérités destinées à favoriser l'accrochage de l'élément
- lesdites aspérités consistent en des lignes de soudure.
Furthermore, according to other advantageous but non-limiting characteristics
- the collet comprises means for guiding the jaws during their displacement
- These guide means comprise channels formed in a frame, inside which elements integral with said jaws slide
- The elements consist of a hollow tube and a rod parallel to each other and integral with a jaw, the rod of one of the jaws being able to slide inside the tube of the other jaw and vice versa
- said cylinders are of hydraulic type
- the internal face of the jaws has asperities intended to promote the attachment of the element
- said roughness consists of weld lines.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description qui va suivre, d'un mode de réalisation préféré. Cette description sera faite en référence aux dessins annexés dans lesquels
- la figure 1 est une vue de face de la pince
- la figure 2 est une vue en perspective d'un sous-ensemble de la pince comprenant un mors de serrage
- la figure 3 est une vue simplifiée de la pince de la figure 1, selon le plan de coupe III-III ;
- la figure 4 est une vue simplifiée de la pince de la figure 1, selon le plan de coupe IV-IV
- la figure 5 est une vue de côté de la pince, montrant un mors de serrage et la poignée associée
- la figure 6 est une vue schématique d'un appareil automoteur équipé d'une pince conforme à l'invention.
Other characteristics and advantages of the present invention will appear on reading the description which follows, of a preferred embodiment. This description will be made with reference to the accompanying drawings in which
- Figure 1 is a front view of the clamp
- Figure 2 is a perspective view of a sub-assembly of the clamp comprising a clamping jaw
- Figure 3 is a simplified view of the clamp of Figure 1, along the section plane III-III;
- Figure 4 is a simplified view of the clamp of Figure 1, according to the section plane IV-IV
- Figure 5 is a side view of the clamp, showing a clamping jaw and the associated handle
- Figure 6 is a schematic view of a self-propelled device equipped with a clamp according to the invention.

La pince conforme à l'invention comprend essentiellement un châssis 2, des mors de serrage 11 et 11' ainsi que deux vérins à double effet montés tête-bêche 3 et 3'. The clamp according to the invention essentially comprises a chassis 2, clamping jaws 11 and 11 ′ as well as two double-acting cylinders mounted head to tail 3 and 3 ′.

Le châssis 2 est métallique et a la forme d'un parallélépipède rectangle. En utilisation il est protégé par un capot 10, également métallique. Parallèlement au grand axe de ce châssis, il est prévu deux canaux débouchant 20 de section carrée. The chassis 2 is metallic and has the shape of a rectangular parallelepiped. In use it is protected by a cover 10, also metallic. Parallel to the major axis of this chassis, there are two channels opening 20 of square section.

Le châssis est de faible épaisseur et est pourvu de deux étriers en "U" 21 placés chacun à une extrémité opposée des canaux 20. La partie des étriers qui forme la base du "U" est dans le prolongement de la base des canaux 20. The chassis is thin and is provided with two U-shaped stirrups 21 each placed at an opposite end from the channels 20. The part of the stirrups which forms the base of the "U" is an extension of the base of the channels 20.

Ces canaux sont destinés à former des moyens de guidage pour des sous-ensembles coulissants qui comprennent les mors 11 et 11'. Chaque mors 1 1 est constitué d'une plaque métallique de faible épaisseur et de forme sensiblement rectangulaire. Sur des mors sont soudés une tige 13, respectivement 13', et un tube creux 12, respectivement 12', ouvert à son extrémité libre. These channels are intended to form guide means for sliding sub-assemblies which include the jaws 11 and 11 '. Each jaw 1 1 consists of a metal plate of small thickness and of substantially rectangular shape. On jaws are welded a rod 13, respectively 13 ', and a hollow tube 12, respectively 12', open at its free end.

Ainsi, sur la face interne du mors 11 sont soudés, parallèlement l'un à l'autre, un tube creux 12 et une tige 13. Comme le montrent les figures 2 et 3, la tige 13 comporte une extrémité effilée 130. Thus, on the internal face of the jaw 11 are welded, parallel to one another, a hollow tube 12 and a rod 13. As shown in FIGS. 2 and 3, the rod 13 has a tapered end 130.

L'écartement mutuel entre la tige et le tube est tel qu'ils peuvent coulisser à l'intérieur des canaux 20 du châssis 2.The mutual spacing between the rod and the tube is such that they can slide inside the channels 20 of the chassis 2.

De la même manière, le mors 11' comporte un tube creux 12' et une tige 13', leur position étant inversée par rapport au mors 11. On notera que la section des tiges 13 et 13' est légèrement inférieure à la section interne des tubes 12 et 12' de sorte que les deux sous-ensembles peuvent coulisser l'un par rapport à l'autre, comme le montre la double-flèche f de la figure 3. In the same way, the jaw 11 'has a hollow tube 12' and a rod 13 ', their position being reversed with respect to the jaw 11. It will be noted that the section of the rods 13 and 13' is slightly less than the internal section of the tubes 12 and 12 'so that the two sub-assemblies can slide relative to each other, as shown by the double arrow f in FIG. 3.

De plus, les dimensions externes des tubes 12 et 12' sont compatibles avec celles des canaux 20.  In addition, the external dimensions of the tubes 12 and 12 'are compatible with those of the channels 20.

Comme le montre la figure 4, la pince conforme à l'invention comporte deux vérins 3 et 3', disposés tête-bêche et parallèlement l'un à l'autre au-dessus du boîtier 2. As shown in FIG. 4, the clamp according to the invention comprises two jacks 3 and 3 ′, arranged head to tail and parallel to each other above the housing 2.

Plus précisément, le corps 30 du vérin 3 est articulé autour d'un axe fixé sur l'étrier 21 disposé du côté de la tige 13'. Sa tige 31 est quant à elle solidaire d'un axe 32 monté entre deux plaquettes verticales soudées au mors 11. More specifically, the body 30 of the jack 3 is articulated around an axis fixed on the stirrup 21 arranged on the side of the rod 13 '. Its rod 31 is in turn secured to an axis 32 mounted between two vertical plates welded to the jaw 11.

D'une manière similaire, le corps 30' du vérin 3' est articulé autour d'un axe monté sur le second étrier 21 disposé du côté de la tige 13. Similarly, the body 30 ′ of the jack 3 ′ is articulated around an axis mounted on the second stirrup 21 disposed on the side of the rod 13.

Sa tige 31' est solidaire d'un axe 32' fixé entre des plaquettes 111' soudées au mors 11'. Its rod 31 'is integral with an axis 32' fixed between plates 111 'welded to the jaw 11'.

Ces vérins 3 et 3' sont des vérins à double effet, par exemple du type hydraulique. Ils sont alimentés en fluide hydraulique au moyen de conduites appropriées, l'allongement ou la rétraction de leur tige respective étant piloté au moyen d'un boîtier de commande 6. These cylinders 3 and 3 'are double-acting cylinders, for example of the hydraulic type. They are supplied with hydraulic fluid by means of appropriate pipes, the extension or retraction of their respective rod being controlled by means of a control unit 6.

En utilisation, le châssis 2 ainsi que les corps des vérins 3 et 3' sont recouverts par le capot de protection 10. In use, the chassis 2 and the bodies of the cylinders 3 and 3 ′ are covered by the protective cover 10.

Comme le montrent les figures 1 et 5, une plaquette 112 est fixée au chant supérieur des mors 11 et 11'. Cette plaquette comporte une partie inclinée en direction du châssis 2 ainsi qu'une partie horizontale. De cette manière, les plaquettes 112 de chacun des deux mors se font face. As shown in Figures 1 and 5, a plate 112 is fixed to the upper edge of the jaws 11 and 11 '. This plate has an inclined part in the direction of the chassis 2 and a horizontal part. In this way, the plates 112 of each of the two jaws face each other.

Sur la partie horizontale de ces plaquettes sont attachés les câbles 7 nécessaires au déplacement de la pince. Elles portent les poignées 113 de préhension de la pince. On a repéré par la référence 114 des boutons disposés sur ces poignées dont l'actionnement permet, par l'intermédiaire de câbles électriques appropriés et du boîtier 6, de piloter le coulissement des tiges des vérins 3 et 3'. On the horizontal part of these plates are attached the cables 7 necessary for the movement of the clamp. They carry the handles 113 for gripping the pliers. The buttons 114 have been identified by the reference 114 on these handles, the actuation of which makes it possible, via appropriate electrical cables and the housing 6, to control the sliding of the rods of the jacks 3 and 3 '.

On notera que les faces en regard des mors 11 et 11' comportent, dans leur partie inférieure des aspérités 110 formées par des lignes parallèles et horizontales de soudure. Ces aspérités sont destinées à un meilleur accrochage de l'élément ou du bloc de construction à manipuler.  It will be noted that the facing faces of the jaws 11 and 11 ′ have, in their lower part, asperities 110 formed by parallel and horizontal weld lines. These roughnesses are intended for better attachment of the element or of the building block to be handled.

On a représenteé à la figure 6 un appareil qui permet le maniement de la pince conforme à l'invention. Cet appareil est formé par un engin automoteur 4 de type connu à l'avant duquel a été disposé un élévateur 42 monté sur roues 41 sur lequel sont stockés des éléments de construction tels que des bordures de trottoir 5 à mettre en place. FIG. 6 shows an apparatus which allows the handling of the clamp according to the invention. This device is formed by a self-propelled machine 4 of known type at the front of which has been disposed an elevator 42 mounted on wheels 41 on which are stored construction elements such as curbs 5 to be put in place.

Un équipement 40 de type connu permet de solidariser l'élévateur 42 à l'engin automoteur 4. Equipment 40 of known type makes it possible to secure the elevator 42 to the self-propelled machine 4.

Cet engin comporte par ailleurs un mât 43 sur lequel est fixée une potence 44. Ce mât 43 est par exemple pourvu d'un équipement qui lui permet de toujours être en position verticale, quelle que soit la configuration de terrain sur lequel se trouve l'engin 4. A l'extrémité libre de la potence 44 est prévu un système de poulie 45 qui coopère avec un câble 8, ce câble 8 étant rattaché aux câbles 7 auxquels est fixée la pince 1. This machine also includes a mast 43 on which is fixed a bracket 44. This mast 43 is for example provided with equipment which allows it to always be in a vertical position, whatever the configuration of the terrain on which the machine 4. At the free end of the bracket 44 is provided a pulley system 45 which cooperates with a cable 8, this cable 8 being attached to the cables 7 to which the clamp 1 is fixed.

Lorsqu'un opérateur souhaite saisir un élément 5 à l'aide de la pince, il oriente, à l'aide de manettes montées par exemple sur l'engin automoteur la potence de telle manière que celle-ci se trouve à l'aplomb de l'élévateur 42, et provoque la descente du câble 8 de manière à pouvoir saisir un élément. Cette saisie se fait alors que l'opérateur a pris en main les deux poignées 113 et a actionné les boutons 114 de manière à ce que les mors 11 et 11' puissent se placer de part et d'autre des deux faces opposées latérales de l'élément à saisir. Lorsque le serrage est effectué, il lui suffit de provoquer la remontée du câble 8 afin de déplacer l'élément. When an operator wishes to grasp an element 5 using the pliers, he or she directs, using the levers mounted for example on the self-propelled machine, so that the latter is in line with the elevator 42, and causes the descent of the cable 8 so as to be able to grasp an element. This entry is made while the operator has taken hold of the two handles 113 and has actuated the buttons 114 so that the jaws 11 and 11 ′ can be placed on either side of the two opposite lateral faces of the element to enter. When tightening is carried out, it suffices to cause the cable 8 to rise in order to move the element.

De la description qui vient d'être faite, on comprend que la manipulation d'un élément de construction se fait de manière simple, sans danger que les mors de serrage ne s'écartent l'un de l'autre à l'occasion d'une manipulation, les vérins hydrauliques étant constamment sous pression de liquide, de manière à générer au niveau des faces opposées de l'élément de construction un effort de serrage permanent. La source de fluide hydraulique qui alimente les vérins est située par exemple sur l'engin automoteur.  From the description which has just been made, it is understood that the manipulation of a construction element is done in a simple manner, without danger that the clamping jaws will move away from each other on the occasion of handling, the hydraulic cylinders being constantly under liquid pressure, so as to generate at the opposite faces of the construction element a permanent clamping force. The source of hydraulic fluid which feeds the cylinders is located for example on the self-propelled machine.

Claims (7)

REVENDICATIONS 1. Pince de serrage destinée à être attachée à au moins un câble tracteur (7), pour la préhension, la manutention et la pose d'éléments de construction tels que des blocs de béton ou de granit, du type comportant deux mors (11, 11') de serrage pouvant être rapprochés ou écartés l'un de l'autre en vue de la saisie ou de la pose d'un élément, caractérisée en ce qu'elle comporte deux vérins à double effet (3, 3') montées tête-bêche dont les tiges respectives (31, 31') sont articulées sur lesdits mors (11, 11').  1. Clamp intended to be attached to at least one towing cable (7), for gripping, handling and laying of construction elements such as concrete or granite blocks, of the type comprising two jaws (11 , 11 ') of tightening which can be moved towards or away from one another for the purpose of gripping or fitting an element, characterized in that it comprises two double-acting cylinders (3, 3') head to tail mounted whose respective rods (31, 31 ') are articulated on said jaws (11, 11'). 2. Pince de serrage selon la revendication 1, caractérisée en ce qu'elle comprend des moyens de guidage (20 ; 12, 12t, 13, 13') des mors (11, 11') lors de leur déplacement. 2. Clamp according to claim 1, characterized in that it comprises guide means (20; 12, 12t, 13, 13 ') of the jaws (11, 11') during their movement. 3. Pince de serrage selon la revendication 2, caractérisée en ce que ces moyens de guidage comprennent des canaux (20) formés dans un châssis (2), à l'intérieur desquels coulissent des éléments (12, 12', 13, 13') solidaires desdits mots. 3. Clamp according to claim 2, characterized in that these guide means comprise channels (20) formed in a frame (2), inside which elements (12, 12 ', 13, 13' slide). ) in solidarity with said words. 4. Pince de serrage selon la revendication 3, caractérisée en ce que les éléments consistent en un tube (12, 12') creux et une tige (13, 13') parallèles entre eux et solidaires d'un mors (11, 11'), la tige (13 ; 13') d'un des mors (11 ; 11') pouvant coulisser à l'intérieur du tube (12, 12') de l'autre mors (Il' ; 11) et réciproquement. 4. Clamp according to claim 3, characterized in that the elements consist of a hollow tube (12, 12 ') and a rod (13, 13') parallel to each other and integral with a jaw (11, 11 ' ), the rod (13; 13 ') of one of the jaws (11; 11') being able to slide inside the tube (12, 12 ') of the other jaw (Il'; 11) and vice versa. 5. Pince de serrage selon l'une des revendications 1 à 4, caractérisée en ce que lesdits vérins (3, 3') sont de type hydraulique. 5. Clamp according to one of claims 1 to 4, characterized in that said cylinders (3, 3 ') are of hydraulic type. 6. Pince de serrage selon l'une des revendications 1 à 5, caractérisé en ce que la face interne des mors (11, 11') comporte des aspérités (110) destinées à favoriser l'accrochage de l'élément. 6. Clamp according to one of claims 1 to 5, characterized in that the internal face of the jaws (11, 11 ') has asperities (110) intended to promote the attachment of the element. 7. Pince de serrage selon la revendication 6, caractérisée en ce que lesdites aspérités (110) consistent en des lignes de soudure.  7. Clamp according to claim 6, characterized in that said asperities (110) consist of weld lines.
FR9307943A 1993-06-24 1993-06-24 Clamp for gripping, handling and positioning constructional elements such as kerbstones Pending FR2706920A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9307943A FR2706920A1 (en) 1993-06-24 1993-06-24 Clamp for gripping, handling and positioning constructional elements such as kerbstones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9307943A FR2706920A1 (en) 1993-06-24 1993-06-24 Clamp for gripping, handling and positioning constructional elements such as kerbstones

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FR2706920A1 true FR2706920A1 (en) 1994-12-30

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2776056A1 (en) 1998-03-10 1999-09-17 Olivo JET BREAKER FOR CRYOGENIC COMPARTMENT OF ISOTHERMIC CONTAINER
WO2010091689A1 (en) * 2009-02-12 2010-08-19 Kewen Paick Lifting device for lifting a curb stone
CN112814400A (en) * 2021-01-18 2021-05-18 朱轶静 Concrete prefabricated part installation construction method
CN113353792A (en) * 2021-06-24 2021-09-07 广东电网有限责任公司 Hoisting device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2776056A1 (en) 1998-03-10 1999-09-17 Olivo JET BREAKER FOR CRYOGENIC COMPARTMENT OF ISOTHERMIC CONTAINER
WO2010091689A1 (en) * 2009-02-12 2010-08-19 Kewen Paick Lifting device for lifting a curb stone
EP2396473A1 (en) * 2009-02-12 2011-12-21 Kewen Paick Lifting device for lifting a curb stone
EP2396473A4 (en) * 2009-02-12 2013-08-07 Kewen Paick Lifting device for lifting a curb stone
CN112814400A (en) * 2021-01-18 2021-05-18 朱轶静 Concrete prefabricated part installation construction method
CN113353792A (en) * 2021-06-24 2021-09-07 广东电网有限责任公司 Hoisting device

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