FR2556026A1

FR2556026A1 - Hand-operated grasping clamp

Info

Publication number: FR2556026A1
Application number: FR8319358A
Authority: FR
Original assignee: JIANG YOU LU
Current assignee: JIANG YOU LU
Priority date: 1983-12-02
Filing date: 1983-12-02
Publication date: 1985-06-07

Abstract

The invention relates to a hand-operated clamp for grasping and transporting materials. It consists of two pairs of lower horizontal arms 1 and 2, each arm of which is provided with a vertical part for grasping materials to be transported and two pairs of upper horizontal arms 5 and 6, each arm of which is provided with a vertical part 7, 8 intended for supporting each corresponding lower arm. The arms are articulated and joined respectively by a central articulation pin 9 which is used as a lower handle, two central sleeves 11, a rod used as an upper handle; four lateral sleeves 12 as well as two lateral articulation pins 15 and 16. With the clamp, it is possible simultaneously to grip, lift and transport a plurality of pieces of objects of flat and thin shape with a single hand, by firstly clenching the two handles of the clamp together.

Description

La présente invention concerne un outil destiné à la préhension et le transport à la main d'une ou plusieurs pièces de matérieux de forme plate et et mince telle que parpaings, briques ou bien carrelage, etc. The present invention relates to a tool intended for gripping and transporting by hand one or more pieces of material of flat and thin shape such as concrete blocks, bricks or tiling, etc.

La préhension et le transport de ces matériaux en chantier pièce par pièce est traditionnellement effectué directement à deux mains. C'est évidemment peu pratique, l'outil à main selon l'invention permet de rémédier à cet inconvénient. I1 estîcônstitué par deux paires de bras horizontaux inférieurs, l'une à droite, l'autre à gauche dont chaque bras est pourvu d'une partie verticale de préhension de matériaux à transporter, et deux paires de bras hor- zontaux supérieurs, l'une à droite, l'autre à gauche, dont chaque bras est pourvu d'une partie verticale supportant chaque bras inférieur correspondant à son extrémité.Les deux paires ee bras horizontaux inférieurs sont articulées, deux à deux, par les deux extrémités d'un axe d'articulation centrale qui traversent perpendiculairement les coulisses ouvertes sur lesdits bras pour que les deux paires de bras puissent coulisser, l'une sur le côté de l'autre, deux à deux, en permettant le rapprochement et l'écartement des parties verticales de préhension. En effet, la partie du milieu de cet axe d'articulation constitue la partie importante de la poignée inférieure de la pince. Les deux paires de bras supérieurs traversent, deux à deux, deux fourreaux centraux et quatre fourreaux latéraux leur permettant ainsi de coulisser l'une sur le côté de l'autre.Chaque fourreau central est relié aux extrémités d'une tige qui est perpendiculaire aux faces latéraux des fourreaux. Cette tige constitue l'autre poignée supérieure de la pince. The gripping and transport of these materials to the site piece by piece is traditionally carried out directly with two hands. It is obviously impractical, the hand tool according to the invention makes it possible to remedy this drawback. It is constituted by two pairs of lower horizontal arms, one on the right, the other on the left, each arm of which is provided with a vertical part for gripping the materials to be transported, and two pairs of upper horizontal arms, the one on the right, the other on the left, each arm of which is provided with a vertical part supporting each lower arm corresponding to its end. The two pairs of lower horizontal arms are articulated, two by two, by the two ends of a central articulation axis which cross perpendicularly the slides open on said arms so that the two pairs of arms can slide, one on the side of the other, two by two, allowing the bringing together and the spacing of the vertical parts gripping. Indeed, the middle part of this articulation axis constitutes the important part of the lower handle of the clamp. The two pairs of upper arms, two by two, cross two central sleeves and four side sleeves thus allowing them to slide one on the side of the other. Each central sleeve is connected to the ends of a rod which is perpendicular to the lateral faces of the sleeves. This rod constitutes the other upper handle of the clamp.

Chaque extrémité des parties verticales des bras supérieurs et chaque genou correspondant des bras infériéurs est articulé par extrémité des deux axes d'articulation latérales dont les longueurs

Each end of the vertical parts of the upper arms and each corresponding knee of the lower arms is articulated by the end of the two lateral articulation axes whose lengths

<tb> à
<tb> l'axe d'articulation centrale en permettant à chaque bras inférieur de tourillonner sur son axe correspondant.<tb> to
<tb> the central articulation axis allowing each lower arm to pivot on its corresponding axis.

En conséquence, si la charge à transporter se trouve entre les deux parties verticales des bras inférieurs, on peut la soulever en serrant d'-abord les deux poignées de la pince. Consequently, if the load to be transported is between the two vertical parts of the lower arms, it can be lifted by first tightening the two handles of the clamp.

Grâce à cette construction, la force de préhension des matériaux à transporter est proportionnée à la force de traction exercée de bras en haut sur les poignées, c'est-à-dire porportionnée au poids des charges. Donc en utilisant ladite pince on peut saisir et transporter en même temps plusieurs pièces d'objets de forme plate et mince avec une seule main. Thanks to this construction, the gripping force of the materials to be transported is proportional to the tensile force exerted from the arms upwards on the handles, that is to say borne by the weight of the loads. So using this clamp you can grab and transport several pieces of flat and thin objects at the same time with one hand.

En outre, avant d'utiliser cette pince, on peut régler la distance entre les deux paires des parties de préhension selon la dimension des charges à transporter. In addition, before using this clamp, the distance between the two pairs of the gripping parts can be adjusted according to the size of the loads to be transported.

La figure 1 représente la vue de face de la pince réalisée conformément à l'invention. FIG. 1 represents the front view of the clamp produced in accordance with the invention.

La figure 2 représente la vue de dessus de la figure 7. FIG. 2 represents the top view of FIG. 7.

La pince représentée sur les figures 1 et 2 comporte une paire de bras horizontaux inférieurs à droite (1) et une autre à gauche (2), dont chaque bras est pourvu d'une partie verticale de préhension de matériaux à transporter (3 et 4). Une paire de bras horizontaux supérieurs à droite (5) et une autre à gauche (6) dont chaque bras est pourvu d'une partie verticale (7 et 8). The clamp shown in Figures 1 and 2 has a pair of lower horizontal arms on the right (1) and another on the left (2), each arm of which is provided with a vertical part for gripping materials to be transported (3 and 4 ). A pair of upper horizontal arms on the right (5) and another on the left (6), each arm of which is provided with a vertical part (7 and 8).

Les deux paires de bras inférieurs sont articulées, deux à deux, respectivement par les deux extrémités dtun axe d'articulation central (9) traversant perpendiculairement les quatre coulisses (10) ouvertes sur chaque bras horizontal inférieur (1 et 2) en formant une paire avant et une paire arrière de machoires de la pince. Les deux paires de bras horizontaux supérieurs sont reliés par deux fourreaux centraux de coupe rectangulaire (11) et quatre fourreaux latéraux de même coupe (12) en formant deux ponts un à l'avant, l'autre à l'arrière, dont les longueurs sont réglables. Chaque face latérale externe des fourreaux centraux est pourvue d'un trou de filetage et une vis à oreilles (13) pour fixer les longueurs des bras après réglage.The two pairs of lower arms are articulated, two by two, respectively by the two ends of a central articulation axis (9) crossing perpendicularly the four slides (10) open on each lower horizontal arm (1 and 2) forming a pair front and rear pair of clamp jaws. The two pairs of upper horizontal arms are connected by two central sleeves of rectangular cut (11) and four lateral sleeves of the same cut (12) by forming two bridges one at the front, the other at the rear, the lengths of which are adjustable. Each external lateral face of the central sleeves is provided with a thread hole and a wing screw (13) for fixing the lengths of the arms after adjustment.

Sur chaque face latérale interne de deux fourreaux centraux est soudée une tige (14) qui est perpendiculaire auxdites faces. Les bras inférieurs (1 et 2) et les bras supérieurs (5 et 6) sont articulés respectivement aux genoux des bras inférieurs et aux extrémités des parties verticales des bras supérieurs (7 et 8) par deux axes d'articulation (15 et 16) en laissant chaque bras inférieur tourillonner respectivement sur son axe d'articulation correspondant. On each internal lateral face of two central sleeves is welded a rod (14) which is perpendicular to said faces. The lower arms (1 and 2) and the upper arms (5 and 6) are articulated respectively at the knees of the lower arms and at the ends of the vertical parts of the upper arms (7 and 8) by two axes of articulation (15 and 16) leaving each lower arm to rotate respectively on its corresponding articulation axis.

Claims

CLAIMS4

1) Device for gripping materials to be transported, characterized in that it comprises two pairs of lower horizontal arms (1 and 2) each arm of which is provided with a vertical part for gripping materials to be transported and two pairs of upper horizontal arms (5 and 6) each arm of which is provided with a vertical part (7 and 8) intended to support each corresponding lower arm. The arms are articulated and connected respectively by a central articulation axis (9) serving as a lower handle, two central sleeves (11), a rod serving as an upper handle, four lateral sleeves (12) and two axes of lateral articulation (15 and 16).

2) Device according to claim 1 is characterized in that the two pairs of lower horizontal arms 17 and 2) each arm of which is provided with a vertical gripping part (3 and 4) are articulated, a pair on the right, the another on the left, two by two, by the two ends of a central articulation axis (9) crossing perpendicularly the four slides (10) open on each lower horizontal arm, forming a front pair and a rear pair of jaws.

3) Device according to any one of the preceding claims ~ characterized in that two pairs of horizontal arms, upper t5 and 6) each arm of which is provided with a vertical part (7 and 8) intended for sup

bear at its end each corresponding lower, are connected, two by two, by two central sleeves of rectangular cut (11) and four side sleeves of the same cut (12) which surround said upper arms by forming two bridges one at the front , the other at the back, the lengths of which are adjustable.

) Device according to claim 1 or claim 3 characterized in that each external lateral face of the central sleeves (11) is provided with a threading hole and a wing screw (13) for fixing the arms (5 and 6) after adjusting the length.

5) Device according to claim 1 or claim 3 charac terized in that on each inner side face of the two central sleeves (11) is welded a rod (15) which is perpendicular to said faces.

6) Device according to any one of the preceding claims, characterized in that the lower arms (1 and 2) and the upper arms (5 and 6) are articulated respectively at the knees of the lower arms and at the ends of the vertical parts of the upper arms ( 7 and 83- by two articulation axes (15 and 16), leaving each lower arm to rotate respectively on the corresponding articulation axis.