FR2769302A1 - Lever clamp for moving load without manual contact - Google Patents

Lever clamp for moving load without manual contact Download PDF

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Publication number
FR2769302A1
FR2769302A1 FR9712324A FR9712324A FR2769302A1 FR 2769302 A1 FR2769302 A1 FR 2769302A1 FR 9712324 A FR9712324 A FR 9712324A FR 9712324 A FR9712324 A FR 9712324A FR 2769302 A1 FR2769302 A1 FR 2769302A1
Authority
FR
France
Prior art keywords
levers
load
clamp
lever
lever clamp
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
FR9712324A
Other languages
French (fr)
Other versions
FR2769302B1 (en
Inventor
Roger Poussade
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR9712324A priority Critical patent/FR2769302B1/en
Publication of FR2769302A1 publication Critical patent/FR2769302A1/en
Application granted granted Critical
Publication of FR2769302B1 publication Critical patent/FR2769302B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B66C1/00—Load-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
    • B66C1/10—Load-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
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/442—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces actuated by lifting force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G7/00—Devices for assisting manual moving or tilting heavy loads
    • B65G7/12—Load carriers, e.g. hooks, slings, harness, gloves, modified for load carrying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-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
    • B66C1/10—Load-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
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/422—Gripping members engaging only the external or internal surfaces of the articles actuated by lifting force

Landscapes

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

Abstract

The lever clamp consists of a traction arm (1) which operates a pair of locking levers (11a, 11b) which grip the load (2). The arm is connected to the locking levers via control levers (12a, 12b) and articulated joints (15), with release handles (13) fixed rigidly to the control levers. A pivot (17) connecting the two locking levers moves in a slot (18) in a plate (20) with a safety stop (22) when the handles are operated, the stop being fixed to a bracket (23) with a return spring (21).

Description

PINCE A LEVIERS
L'invention concerne une pince à leviers dans laquelle un bras de traction assure l'articulation de deux leviers de serrage d'une charge et qui possède des moyens d'ouverture de la pince et de libération de ladite charge.LEVER CLAMP
The invention relates to a lever clamp in which a traction arm provides the articulation of two levers for clamping a load and which has means for opening the clamp and releasing said load.

On connait une pince dans laquelle les leviers de serrage portent des articulations ajustables en fonction des dimensions de la charge.A clamp is known in which the clamping levers carry adjustable joints according to the dimensions of the load.

Lorsqu'une telle pince assure la manutention de charges identiques, les articulations de la pince sont préréglées pour obtenir le serrage de la charge et le transport simultané de la pince et de la charge.When such a clamp handles identical loads, the clamp joints are preset to obtain the clamping of the load and the simultaneous transport of the clamp and the load.

Par contre lorsque la charge est libérée à son lieu d'emplacement, les moyens d'ouverture de la pince doivent être actionnés indépendamment.On the other hand when the load is released at its place of location, the means of opening of the clamp must be actuated independently.

L'invention a ainsi pour objet une pince à leviers destinée au transport d'une charge dans le but d'éviter la manipulation de celle-ci.The subject of the invention is therefore a lever clamp intended for transporting a load in order to avoid handling it.

L'invention a encore pour objet une pince destinée à retenir solidement et plus sûrement une charge telle qu'une batterie de véhicule automobile.Another subject of the invention is a clamp intended to securely and more reliably retain a charge such as a motor vehicle battery.

L'invention a également pour objet une pince dont la mise en place au contact de la charge et le serrage de ladite charge sont opérables à l'aide d'un treuil de levage. A subject of the invention is also a clamp, the positioning of which in contact with the load and the clamping of said load are operable using a lifting winch.

L'invention a encore pour objet une pince à sécurité augmentée par la mise en oeuvre de moyens d'ouverture à commande manuelle facilitant l'ouverture de la pince après avoir placé la charge sur son lieu d'implantation.Another subject of the invention is a clamp with increased safety by the use of manual control opening means facilitating the opening of the clamp after having placed the load on its place of implantation.

Selon l'invention, le bras de traction est attelé à une paire de biellettes de commande dont les extrémités portent les articulations des leviers de serrage tandis que des poignées de libération de la charge sont rigidement reliées auxdites biellettes de commande.According to the invention, the traction arm is coupled to a pair of control rods the ends of which carry the articulations of the clamping levers while load release handles are rigidly connected to said control rods.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture d'un exemple de réalisation de la pince en référence au dessin annexé dans lequel:
Les figures 1 et 2 sont des représentations schématiques de la pince respectivement en sa position de serrage et d'ouverture.Other characteristics and advantages of the invention will appear on reading an exemplary embodiment of the clamp with reference to the appended drawing in which:
Figures 1 and 2 are schematic representations of the clamp respectively in its clamping and opening position.

Les figures 3 et 4 sont des vues en élévation de la pince dans ses états de fonctionnement représentés aux figures 1 et 2.Figures 3 and 4 are elevation views of the clamp in its operating states shown in Figures 1 and 2.

Comme représenté au dessin, la pince 10 est attelée à un bras de traction 1 dont le déplacement et la traction suivant la flèche F permet la levée d'une charge 2 prise en tenaille entre deux leviers de serrage llaet llb.As shown in the drawing, the clamp 10 is coupled to a traction arm 1 whose displacement and traction according to the arrow F allows the lifting of a load 2 caught in pincers between two clamping levers llaet llb.

Le bras 1 porte un anneau de levage 3 articulé autour d'un croisillon 4 porté par le bras 1. The arm 1 carries a lifting ring 3 articulated around a cross 4 carried by the arm 1.

Le bras 1 est attelé à une paire de biellettes de commande 12a, 12b auxquelles sont rigidement reliées des poignées de libération 13. A cet effet, l'extrémité du bras 1 porte un axe d'articulation 14 des biellettes 12a, 12b et les extrémités desdites biellettes portent les articulations respectives 15 des leviers de serrage 1 la, 1 lb. Les leviers de serrage 1 la, 1 lut, sont solidaires d'un axe commun d'articulation 17 mobile dans une lumière 18 d'ajustement et de butée.The arm 1 is coupled to a pair of control rods 12a, 12b to which the release handles 13 are rigidly connected. To this end, the end of the arm 1 carries a hinge pin 14 of the rods 12a, 12b and the ends said rods carry the respective articulations 15 of the clamping levers 11a, 1lb. The clamping levers 11a, 1b, are secured to a common axis of articulation 17 movable in a light 18 for adjustment and abutment.

La lumière d'ajustement 18 et l'axe d'articulation 17 sont portés par une platine 20 fixée aux axes 14 et 15.The adjustment light 18 and the articulation axis 17 are carried by a plate 20 fixed to the axes 14 and 15.

L'assemblage de deux platines telles que 20 constitue de la sorte un moyen de sécurité destiné à éviter les risques de pincement au contact des différents composants de la pince.The assembly of two plates such as 20 thus constitutes a safety means intended to avoid the risks of pinching in contact with the various components of the clamp.

Dans le but d'éviter l'ouverture accidentelle de la pince, les leviers 1 la, 11b sont sollicités dans le sens de la fermeture de la pince par un ressort de rappel 21 monté en tension entre les branches desdits leviers à proximité d'une chape 23.In order to avoid accidental opening of the clamp, the levers 11a, 11b are biased in the direction of closing of the clamp by a return spring 21 mounted in tension between the branches of said levers near a yoke 23.

Par ailleurs, une butée articulée 22 accrochée sur l'axe 18 par l'intermédiaire de sa chape 23 limite la course verticale des leviers 1 la, 1 lob de la pince au cours de la mise en place de celle-ci au contact de la charge 2.Furthermore, an articulated stop 22 hung on the axis 18 by means of its yoke 23 limits the vertical stroke of the levers 11a, 1 lob of the clamp during the positioning of the latter in contact with the charge 2.

Le fonctionnement de la pince sera décrit ci-après a) saisie de la charge (figure 4.)
La pince fixée par l'anneau de levage 3 est amené au contact de la
charge 2.The operation of the clamp will be described below a) entering the load (Figure 4.)
The clamp fixed by the lifting ring 3 is brought into contact with the
charge 2.

La butée 22 prend alors appui sur la charge 2 et modifie la position
de l'axe 17 dans sa lumière d'ajustement 18. L'angle d'ouverture des
leviers i la, 1 lob augmente à l'encontre de l'effort de tension exercé
par le ressort 21.The stop 22 then takes support on the load 2 and modifies the position
of the axis 17 in its adjustment light 18. The opening angle of the
levers i la, 1 lob increases against the tension force exerted
by spring 21.

L'extrémité des leviers I la, 1 lb entre alors en contact avec la
charge 2. b) Levée de la charge (figure 3.)
A la suite d'une traction sur l'anneau de levage 3, l'angle d'ouverture
des leviers 1 la, 1 lb diminue et ceux-ci opèrent leur effort de
serrage au contact de la charge 2. c) Ouverture manuelle de la pince
Le rapprochement des poignées de libération 13 a pour effet
d'augmenter l'angle d'ouverture des leviers i la, 1 lb.The end of the levers I la, 1 lb then comes into contact with the
load 2. b) Lifting the load (figure 3.)
Following a pull on the lifting ring 3, the opening angle
levers 1 la, 1 lb decrease and these operate their effort to
tightening in contact with the load 2. c) Manual opening of the clamp
The approximation of the release handles 13 has the effect
increase the opening angle of the levers i la, 1 lb.

L'axe 17 se déplace dans la lumière 18 et vient en butée sur le fond
de la lumière 18. The axis 17 moves in the light 18 and abuts on the bottom
light 18.

Claims (1)

REVENDICATIONS [1] Pince à leviers dans laquelle un bras de traction (1) assure CLAIMS [1] Lever clamp in which a traction arm (1) provides l'alticulation de deux leviers de serrage (lla, llb) d'une charge the alignment of two clamping levers (lla, llb) of a load (2) et qui possède des moyens d'ouverture de la pince et de (2) and which has means for opening the clamp and for libération de ladite charge, caractérisée par le fait que le bras de release of said load, characterized in that the arm of traction (1) est attelé à une paire de biellettes de commande (12a,  traction (1) is coupled to a pair of control rods (12a, 12b) dont les extrémités portent les articulations (15) des leviers 12b) whose ends carry the articulations (15) of the levers de serrage (lia, llb) tandis que des poignées (13) de libération clamping (lia, llb) while release handles (13) de la charge sont rigidement reliées auxdites biellettes de of the load are rigidly connected to said connecting rods commande ( 12a, 12b). command (12a, 12b). [2] Pince à leviers selon la revendication 1, caractérisée par le fait[2] Lever clamp according to claim 1, characterized in that que l'articulation des leviers de serrage (1 la, 1 lb) est portée par that the articulation of the clamping levers (1 la, 1 lb) is carried by un axe (17) mobile dans une lumière (18) d'ajustement et de an axis (17) movable in a light (18) for adjusting and butée préalable à l'écartement des leviers (1 la, 1 lb) sous l'action stop prior to the lever spacing (1 la, 1 lb) under the action des poignées (13). handles (13). [3] Pince à leviers selon la revendication 2, caractérisée par le fait[3] Lever clamp according to claim 2, characterized in that que la lumière d'ajustement (18) de l'axe d'articulation (17) des that the adjustment light (18) of the hinge pin (17) of the leviers est portée par une platine (20) de montage d'une butée de levers is carried by a plate (20) for mounting a stop sécurité (22) de commande d'écartement des leviers de la pince safety device (22) for controlling the gripper lever spacing préalablement à l'actionnement du bras de traction (1) de la prior to actuation of the traction arm (1) of the pince. pliers. [4] Pince à leviers selon la revendication 3, caractérisée par le fait[4] Lever clamp according to claim 3, characterized in that que la butée de sécurité (22) est fixée à une chape (23) à that the safety stop (22) is fixed to a yoke (23) at proximité d'un ressort de rappel (21) des leviers de serrage.  proximity of a return spring (21) of the clamping levers.
FR9712324A 1997-10-03 1997-10-03 LEVER CLAMP Expired - Fee Related FR2769302B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9712324A FR2769302B1 (en) 1997-10-03 1997-10-03 LEVER CLAMP

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9712324A FR2769302B1 (en) 1997-10-03 1997-10-03 LEVER CLAMP

Publications (2)

Publication Number Publication Date
FR2769302A1 true FR2769302A1 (en) 1999-04-09
FR2769302B1 FR2769302B1 (en) 1999-10-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR9712324A Expired - Fee Related FR2769302B1 (en) 1997-10-03 1997-10-03 LEVER CLAMP

Country Status (1)

Country Link
FR (1) FR2769302B1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005044712A2 (en) * 2003-10-29 2005-05-19 Lionel Foster Lifting device
FR2870221A1 (en) * 2004-05-17 2005-11-18 Gilbert Bobeda Flagstone installing device, has base plate abutting to articulated arms to maintain claws isolated while moving device downwards, and providing support point to disengage, by tilting lift bar, one claw when flagstone is installed on ground
EP2363370A1 (en) * 2010-03-02 2011-09-07 Feiba Engineering & Plants GmbH Gripping device
CN102963815A (en) * 2012-11-28 2013-03-13 大连钛鼎重工有限公司 Four-claw double-lever plate blank clamp
CN103043458A (en) * 2012-12-25 2013-04-17 鞍钢集团铁路运输设备制造公司 Electric rail clamping device
CN103979404A (en) * 2014-06-04 2014-08-13 高佳太阳能股份有限公司 Polycrystalline silicon ingot lifting clamp
CN103979405A (en) * 2014-04-02 2014-08-13 洛阳晟源新材料有限公司 Corundum crucible hanger
CN105752579A (en) * 2016-04-27 2016-07-13 山西风雷钻具有限公司 Bullet lifting tool
CN107444828A (en) * 2017-08-11 2017-12-08 国网山东省电力公司昌邑市供电公司 Current transformer portable clip
CN108516458A (en) * 2018-05-31 2018-09-11 洛阳栾川钼业集团股份有限公司 One kind round molybdenum-iron ingot boom hoisting in being smelted for molybdenum-iron
WO2019072600A1 (en) * 2017-10-12 2019-04-18 Nexter Systems Gripping device for shells

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442698A (en) * 1945-02-10 1948-06-01 Frederic F Lang Tongs
US3051521A (en) * 1962-02-09 1962-08-28 Woodings Verona Tool Works Automatically releasing lifting tongs
US3942834A (en) * 1974-06-14 1976-03-09 Nittan Kohki Kabushiki Kaisha Hooked clutch
US4097084A (en) * 1977-03-18 1978-06-27 Russkraft, Inc. Lifting grab for cylindrical objects
US4109952A (en) * 1977-02-09 1978-08-29 Michel Monzain Package lifter
GB2183595A (en) * 1985-11-28 1987-06-10 British Nuclear Fuels Plc Lifting apparatus
US5120100A (en) * 1990-07-30 1992-06-09 Crescent Pipe Tongs, Incorporated Lifting and gripping apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442698A (en) * 1945-02-10 1948-06-01 Frederic F Lang Tongs
US3051521A (en) * 1962-02-09 1962-08-28 Woodings Verona Tool Works Automatically releasing lifting tongs
US3942834A (en) * 1974-06-14 1976-03-09 Nittan Kohki Kabushiki Kaisha Hooked clutch
US4109952A (en) * 1977-02-09 1978-08-29 Michel Monzain Package lifter
US4097084A (en) * 1977-03-18 1978-06-27 Russkraft, Inc. Lifting grab for cylindrical objects
GB2183595A (en) * 1985-11-28 1987-06-10 British Nuclear Fuels Plc Lifting apparatus
US5120100A (en) * 1990-07-30 1992-06-09 Crescent Pipe Tongs, Incorporated Lifting and gripping apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005044712A2 (en) * 2003-10-29 2005-05-19 Lionel Foster Lifting device
WO2005044712A3 (en) * 2003-10-29 2005-10-27 Lionel Foster Lifting device
US7575260B2 (en) 2003-10-29 2009-08-18 Lionel Foster Lifting device
FR2870221A1 (en) * 2004-05-17 2005-11-18 Gilbert Bobeda Flagstone installing device, has base plate abutting to articulated arms to maintain claws isolated while moving device downwards, and providing support point to disengage, by tilting lift bar, one claw when flagstone is installed on ground
EP2363370A1 (en) * 2010-03-02 2011-09-07 Feiba Engineering & Plants GmbH Gripping device
CN102963815A (en) * 2012-11-28 2013-03-13 大连钛鼎重工有限公司 Four-claw double-lever plate blank clamp
CN102963815B (en) * 2012-11-28 2015-04-01 大连钛鼎重工有限公司 Four-claw double-lever plate blank clamp
CN103043458A (en) * 2012-12-25 2013-04-17 鞍钢集团铁路运输设备制造公司 Electric rail clamping device
CN103979405A (en) * 2014-04-02 2014-08-13 洛阳晟源新材料有限公司 Corundum crucible hanger
CN103979404A (en) * 2014-06-04 2014-08-13 高佳太阳能股份有限公司 Polycrystalline silicon ingot lifting clamp
CN105752579A (en) * 2016-04-27 2016-07-13 山西风雷钻具有限公司 Bullet lifting tool
CN107444828A (en) * 2017-08-11 2017-12-08 国网山东省电力公司昌邑市供电公司 Current transformer portable clip
WO2019072600A1 (en) * 2017-10-12 2019-04-18 Nexter Systems Gripping device for shells
FR3072372A1 (en) * 2017-10-12 2019-04-19 Nexter Systems GRIPPING DEVICE FOR OBUS
US11312597B2 (en) 2017-10-12 2022-04-26 Nexter Systems Gripping device for shells
CN108516458A (en) * 2018-05-31 2018-09-11 洛阳栾川钼业集团股份有限公司 One kind round molybdenum-iron ingot boom hoisting in being smelted for molybdenum-iron

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Publication number Publication date
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Effective date: 20070629