FR2697187A1 - Separating shears for motor vehicle accidents - comprises double blade and opposed single blade which are pivoted about common axis fixed with respect to body of shears - Google Patents
Separating shears for motor vehicle accidents - comprises double blade and opposed single blade which are pivoted about common axis fixed with respect to body of shears Download PDFInfo
- Publication number
- FR2697187A1 FR2697187A1 FR9213265A FR9213265A FR2697187A1 FR 2697187 A1 FR2697187 A1 FR 2697187A1 FR 9213265 A FR9213265 A FR 9213265A FR 9213265 A FR9213265 A FR 9213265A FR 2697187 A1 FR2697187 A1 FR 2697187A1
- Authority
- FR
- France
- Prior art keywords
- blade
- blades
- double blade
- double
- shears
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D17/00—Shearing machines or shearing devices cutting by blades pivoted on a single axis
- B23D17/02—Shearing machines or shearing devices cutting by blades pivoted on a single axis characterised by drives or gearings therefor
- B23D17/06—Shearing machines or shearing devices cutting by blades pivoted on a single axis characterised by drives or gearings therefor actuated by fluid or gas pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D29/00—Hand-held metal-shearing or metal-cutting devices
- B23D29/005—Hand-held metal-shearing or metal-cutting devices for cutting sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shearing Machines (AREA)
Abstract
Description
CISAILLE ÉCARTEUR COMPORTANT UNE LAME
DOUBLE ET UNE LAME SIMPLE
La présente invention a pour objet une cisaille écarteur comportant une lame double et une lame simple.SPREAD SHEAR HAVING A BLADE
DOUBLE AND A SINGLE BLADE
The present invention relates to a spacer shear comprising a double blade and a single blade.
Elle est destinée en particulier à permettre la désincarcération des personnes enfermées dans des véhicules accidentés dont la carrosserie a été déformée par le choc. It is intended in particular to allow the extrication of people trapped in damaged vehicles whose bodywork has been deformed by the impact.
Les dispositifs réalisés à ce jour et destinés au même usage, comme ceux décrits dans les brevets français NO 2 556 266 et 2 503 000 ou le brevet américain NO 3 898 805 par exemple, sont le plus souvent des appareils dérivés de la cisaille à main classique, comportant deux lames pivotant autour d'un axe et se croisant lors de la coupe à la manière des lames de ciseaux. Il est pratiquement impossible de couper des tôles épaisses ou des profilés avec ce type de cisaille, du fait que les lames ont tendance, dans ce cas, à s'écarter l'une de l'autre et à se bloquer complètement en rendant l'outil inutilisable, si l'on insiste. The devices produced to date and intended for the same use, such as those described in French patents NO 2,556,266 and 2,503,000 or American patent NO 3,898,805 for example, are most often devices derived from hand shears classic, comprising two blades pivoting around an axis and crossing each other during cutting in the manner of scissor blades. It is practically impossible to cut thick sheets or profiles with this type of shears, because the blades tend, in this case, to move away from each other and to completely block making the unusable tool, if you insist.
Les brevets français NO 2 353 206 et 2 500 344 décrivent des cisailles à trois lames de coupe, une lame simple passant entre deux contrelames identiques. French patents NO 2,353,206 and 2,500,344 describe shears with three cutting blades, a single blade passing between two identical counterblades.
Ces appareils sont surtout conçus pour le découpage industriel des tôles et se prêtent mal au travail de désincarcération des accidentés et doivent dans tous les cas être complétés par un écarteur. Dans le premier de ces deux brevets, la lame simple se déplace le long d'une glissière de guidage au bout de laquelle sont fixées les contrelames. Cette disposition ne permet en aucun cas de développer une puissance de coupe importante sans risque de blocage du mécanisme. Le dispositif objet du second brevet, quant à lui, comporte des lames triangulaires trop encombrantes pour s'insérer aisément entre les tôles froissées et tordues que l'on trouve sur les véhicules accidentés.These devices are especially designed for the industrial cutting of sheets and do not lend themselves well to the work of extrication of accident victims and must in all cases be completed by a retractor. In the first of these two patents, the simple blade moves along a guide slide at the end of which the counterblades are fixed. This arrangement does not allow in any case to develop a significant cutting power without risk of blocking the mechanism. The device which is the subject of the second patent, meanwhile, comprises triangular blades which are too bulky to be easily inserted between the crumpled and twisted sheets which are found on damaged vehicles.
Le dispositif selon la présente invention supprime tous ces inconvenients. En effet, il permet avec un seul outil maniable et puissant de couper et d'écarter les tôles, même de forte épaisseur, ou les profilés constituant la carrosserie des véhicules, sans aucun risque de blocage de l'appareil. The device according to the present invention eliminates all these drawbacks. Indeed, it allows with a single handy and powerful tool to cut and spread the sheets, even very thick, or the profiles constituting the vehicle body, without any risk of blocking the device.
Il est constitué par la combinaison d'un vérin à double effet actionnant un ensemble de coupe constitué d'une lame simple et d'une lame double pivotant autour d'un axe commun, les parties des lames opposées aux parties coupantes étant pourvues de stries antidérapantes permettant à l'appareil de servir d'écarteur, et les flancs internes de la lame double étant évasés pour faciliter le dégagement des copeaux. It is constituted by the combination of a double-acting cylinder actuating a cutting assembly consisting of a single blade and a double blade pivoting around a common axis, the parts of the blades opposite to the cutting parts being provided with ridges. Non-slip allowing the device to serve as a spreader, and the internal sides of the double blade being flared to facilitate the release of shavings.
Sur les dessins annexés, donnés à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'invention:
la figure 1 représente en vue éclatée de cisaille écarteur avec lame double fixe,
la figure 2 représente dans les mêmes conditions une cisaille écarteur à lame double mobile,
et la figure 3 est une coupe transversale agrandie de la double lame, suivant les flèches A-A de la figure 1. In the accompanying drawings, given by way of nonlimiting example of one of the embodiments of the subject of the invention:
FIG. 1 is an exploded view of a retracting shear with a fixed double blade,
FIG. 2 shows, under the same conditions, a retractable shear with a movable double blade,
and FIG. 3 is an enlarged cross-section of the double blade, according to the arrows AA in FIG. 1.
Le dispositif, figures 1 à 3, est constitué d'un corps de cisaille 1 fixe, monté sur l'extrêmité avant d'un vérin hydraulique 2 à double effet, et d'une chape mobile fixée sur la tête de piston dudit vérin et actionnant un ensemble de coupe constitué d'une lame simple 4 mobile, et d'une lame double 5 fixe ou mobile pivotant autour d'un axe commun 6 fixe par rapport au corps de cisaille 1. The device, FIGS. 1 to 3, consists of a fixed shear body 1, mounted on the front end of a double-acting hydraulic cylinder 2, and a movable yoke fixed on the piston head of said cylinder and actuating a cutting assembly consisting of a simple movable blade 4, and of a fixed or movable double blade 5 pivoting about a common axis 6 fixed relative to the shear body 1.
La lame double 5 est formée de deux lames 5' et 5" solidaires symétriques par rapport à un plan passant entre elles. Leurs flancs internes 7 ne sont pas parallèles et s'écartent l'un de l'autre à partir de la ligne de coupe 12 de manière à faciliter le dégagement des copeaux. Les extrêmités 8 des deux lames 5' et 5" sont rendues solidaires par boulonnage, rivetage, soudure ou tout autre moyen, afin d'interdire toute possibilité d'écartement. The double blade 5 is formed by two blades 5 'and 5 "which are symmetrical with respect to a plane passing between them. Their internal flanks 7 are not parallel and move away from each other from the line of cut 12 so as to facilitate the removal of the chips. The ends 8 of the two blades 5 ′ and 5 ″ are made integral by bolting, riveting, welding or any other means, in order to prohibit any possibility of separation.
La ligne de coupe, aussi bien des lames simples 4 que des lames doubles 5, est de préférence droite et les côtés opposés à cette ligne de coupe sont pourvus de stries antidérapantes 9 destinées à faciliter l'utilisation de l'appareil en tant qu'écarteur. The cutting line, both of the single blades 4 and of the double blades 5, is preferably straight and the sides opposite to this cutting line are provided with non-slip ridges 9 intended to facilitate the use of the apparatus as retractor.
Lorsque la lame double 5 est mobile, les deux lames 4, 5 sont entraînées par la chape mobile 3 par l'intermédiaires de biellettes 10. When the double blade 5 is mobile, the two blades 4, 5 are driven by the mobile yoke 3 by means of link rods 10.
La commande du vérin hydraulique 2 s'effectue par une poignée tournante 11 ergonomique située à l'arrière dudit vérin et permettant d'obtenir soit le serrage des lames 4 et 5 pour la coupe, soit le déserrage permettant l'écartement des tôles. La poignée tournante comportera avantageusement un système de rappel de sécurité provoquant l'immobilisation des lames lorsque ladite poignée est lachée. The hydraulic cylinder 2 is controlled by an ergonomic rotating handle 11 located at the rear of said cylinder and making it possible to obtain either the tightening of the blades 4 and 5 for cutting, or the loosening allowing the spacing of the sheets. The rotary handle will advantageously include a safety reminder system causing the blades to immobilize when said handle is released.
Grâce à sa simplicité, à sa facilité d'utilisation, à son volume réduit et à son faible coût de revient, le dispositif qui vient d'être décrit se prète particulièrement bien à la réalisation d'outillages de désincarcération peu encombrants, rapides à mettre en oeuvre et efficaces dans toutes les situations. Thanks to its simplicity, its ease of use, its reduced volume and its low cost price, the device which has just been described is particularly suitable for the production of space saving extrication tools, which are quick to install. effective and effective in all situations.
Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires. The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9213265A FR2697187B1 (en) | 1992-10-27 | 1992-10-27 | SPREAD SHEAR COMPRISING A DOUBLE BLADE AND A SINGLE BLADE. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9213265A FR2697187B1 (en) | 1992-10-27 | 1992-10-27 | SPREAD SHEAR COMPRISING A DOUBLE BLADE AND A SINGLE BLADE. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2697187A1 true FR2697187A1 (en) | 1994-04-29 |
FR2697187B1 FR2697187B1 (en) | 1996-05-03 |
Family
ID=9435215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9213265A Expired - Fee Related FR2697187B1 (en) | 1992-10-27 | 1992-10-27 | SPREAD SHEAR COMPRISING A DOUBLE BLADE AND A SINGLE BLADE. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2697187B1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898805A (en) * | 1972-09-14 | 1975-08-12 | Jr Lewis B Good | Pump and intensifier unit arrangement for powered tools |
FR2353206A7 (en) * | 1974-06-12 | 1977-12-23 | Cardona Georges | Vehicle coachwork shears actuated by ram - has blade working between stationary counter-blades to form chip and leave slot for blade advance |
FR2500344A1 (en) * | 1981-02-23 | 1982-08-27 | Parmentier Jean | Scissor-action jack-actuated sheet metal shears - has centre blade between pair of counter blades with fulcrum tied to jack case |
FR2503000A1 (en) * | 1981-04-03 | 1982-10-08 | Gallego Joseph | Portable jack-actuated shears - has jack thrust to drive inter-articulated blades via pin jointed struts and piston yoke |
FR2556266A1 (en) * | 1983-12-07 | 1985-06-14 | Gallego Joseph | Hydraulic shears device for a crash-damaged vehicle |
-
1992
- 1992-10-27 FR FR9213265A patent/FR2697187B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898805A (en) * | 1972-09-14 | 1975-08-12 | Jr Lewis B Good | Pump and intensifier unit arrangement for powered tools |
FR2353206A7 (en) * | 1974-06-12 | 1977-12-23 | Cardona Georges | Vehicle coachwork shears actuated by ram - has blade working between stationary counter-blades to form chip and leave slot for blade advance |
FR2500344A1 (en) * | 1981-02-23 | 1982-08-27 | Parmentier Jean | Scissor-action jack-actuated sheet metal shears - has centre blade between pair of counter blades with fulcrum tied to jack case |
FR2503000A1 (en) * | 1981-04-03 | 1982-10-08 | Gallego Joseph | Portable jack-actuated shears - has jack thrust to drive inter-articulated blades via pin jointed struts and piston yoke |
FR2556266A1 (en) * | 1983-12-07 | 1985-06-14 | Gallego Joseph | Hydraulic shears device for a crash-damaged vehicle |
Also Published As
Publication number | Publication date |
---|---|
FR2697187B1 (en) | 1996-05-03 |
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TP | Transmission of property |