FR2504905A1 - Fork-lift truck for use on rough surfaces - has suspension assembly between chassis and lifting gear and pair of parallel shock absorbers - Google Patents
Fork-lift truck for use on rough surfaces - has suspension assembly between chassis and lifting gear and pair of parallel shock absorbers Download PDFInfo
- Publication number
- FR2504905A1 FR2504905A1 FR8108700A FR8108700A FR2504905A1 FR 2504905 A1 FR2504905 A1 FR 2504905A1 FR 8108700 A FR8108700 A FR 8108700A FR 8108700 A FR8108700 A FR 8108700A FR 2504905 A1 FR2504905 A1 FR 2504905A1
- Authority
- FR
- France
- Prior art keywords
- chassis
- assembly
- fork
- pair
- articulated
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
- B66F9/082—Masts; Guides; Chains inclinable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07586—Suspension or mounting of wheels on chassis
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
La présente invention concerne un chariot de manutention comportant un châssis et un ensemble élévateur situé en avant de l'extrémité antérieure du châssis, cet ensemble comportant un sous-ensemble fixe supportant un sousensemble mobile. The present invention relates to a handling trolley comprising a chassis and a lifting assembly situated in front of the front end of the chassis, this assembly comprising a fixed sub-assembly supporting a mobile sub-assembly.
Lorsque les chariots de manutention évoluent sur des sols irréguliers ou en mauvais état, les secousses et/ou les vibrations qui s'exercent sur leur châssis sont en général transmises intégralement à leur ensemble élévateur. When the industrial trucks move on uneven or in poor condition, the jolts and / or vibrations exerted on their chassis are generally transmitted in their entirety to their lifting assembly.
Or, sous l'action de ces secousses et/ou de ces vibrations, il arrive fréquemment que la charge transportée se déverse accidentellement, ce qui peut lui occasionner d'importantes détériorations et être en outre à l'origine d'accidents graves pour les personnes se trouvant à proximité du chariot.However, under the action of these tremors and / or these vibrations, it often happens that the transported load accidentally spills, which can cause it significant deterioration and can also cause serious accidents for people near the cart.
La présente invention se propose de remédier à ces inconvénients et, pour ce faire, elle a pour objet un chariot de manutention qui se caractérise en ce que l'ensemble élévateur est relié au châssis par l'intermédiaire d'un dispositif de suspension comportant au moins un bras de liaison dont les extrémités sont respectivement articulées sur le châssis et sur la partie inférieure du sous-ensemble fixe, et un vérin amortisseur dont l'une des extrémités est articulée sur le bras de liaison et dont l'autre extrémité est articulée sur le sous-ensemble fixe, au-dessus de l'articulation du bras de liaison sur celui-ci. The present invention proposes to remedy these drawbacks and, to do this, it relates to a handling trolley which is characterized in that the lifting assembly is connected to the chassis by means of a suspension device comprising at at least one connecting arm, the ends of which are respectively articulated on the chassis and on the lower part of the fixed sub-assembly, and a damping cylinder, one of the ends of which is articulated on the connecting arm and the other end of which is articulated on the fixed sub-assembly, above the articulation of the link arm on the latter.
Grâce à ce dispositif de suspens ion, l'ensemble élévateur n'est plus relié rigidement au châssis et se trouve de ce fait isolé des secousses auxquelles celui-ci serait soumis. Les risques pour que la charge transportée se déverse accidentellement lorsque le chariot se déplace sur un sol en mauvais état sont donc maintenant pratiquement nuls
De préférence, le dispositif de suspens ion comporte deux bras de liaison s'étendant parallèlement à et situés de part et d'autre de l'axe longitudinal du châssis, et deux vérins amortisseurs parallèles articulés chacun sur un bras de liaison et sur le sous-ensemble fixe.Thanks to this ion suspension device, the lifting assembly is no longer rigidly connected to the chassis and is therefore isolated from the jolts to which the latter would be subjected. The risks that the transported load accidentally spills when the carriage moves on a floor in poor condition are now practically zero
Preferably, the suspension device comprises two link arms extending parallel to and located on either side of the longitudinal axis of the chassis, and two parallel shock-absorbing cylinders each articulated on a link arm and on the underside. - fixed assembly.
Cette disposition permet de réduire encore les risques de déversement de la charge. Ces risques seront en fait d'autant plus faibles que la distance prévue entre les deux bras sera plus grande. This arrangement further reduces the risk of load spillage. These risks will in fact be all the smaller the greater the distance provided between the two arms.
Avantageusement, les deux bras de liaison sont reliés par une traverse. Cette traverse augmente bien entendu la rigidité et la robustesse du dispositif de suspension. Advantageously, the two link arms are connected by a cross member. This cross member of course increases the rigidity and the robustness of the suspension device.
Un mode d'exécution de la présente invention sera décrit ci-après à titre d'exemple nullement limitatif en référence aux dessins annexés dans lesquels
- la figure I est une vue de coté schematique d'un c:iariot de manu tention conforme à la présente invention ; et
- la figure 2 est une vue de dessus schématique avec arrachements partiels du dispositif de suspension interposé entre l'ensemble élévateur et le châssis du chariot visible sur la figure 1, les verins amortisseurs de ce dispositif étant représentés de façon symbolique.An embodiment of the present invention will be described below by way of non-limiting example with reference to the accompanying drawings in which
- Figure I is a schematic side view of a c: iariot handling according to the present invention; and
- Figure 2 is a schematic top view with partial cutaway of the suspension device interposed between the lifting assembly and the chassis of the carriage visible in Figure 1, the damping jacks of this device being represented symbolically.
Le chariot de manutention que l'on peut voir sur la figure I comprend de façon tout à fait classique, un châssis I reposant sur deux roues avant 2 et sur deux roues arrière 3, un poste de pilotage 4 délimité par un protège conducteur 5, et un ensemble élévateur 6 situé en avant de la face antérieure du châssis 1. The handling cart that can be seen in FIG. 1 comprises, in a completely conventional manner, a chassis I resting on two front wheels 2 and on two rear wheels 3, a cockpit 4 delimited by a driver's guard 5, and an elevator assembly 6 situated in front of the front face of the chassis 1.
De façon également classique, l'ensemble élévateur comprend un sousensemble fixe 7 et un sous-ensemble mobile 8 (visible sur la figure 2), depla- çable le long du sous-ensemble fixe sous la commande de deux vérins hydrauliques 9. Also conventionally, the lifting assembly comprises a fixed subassembly 7 and a mobile subassembly 8 (visible in FIG. 2), movable along the fixed subassembly under the control of two hydraulic cylinders 9.
Bien qu'il ne soit pas nécessaire de décrire en détail la structure de l'ensemble de levage, on notera simplement que le sous-ensemble fixe comprend deux montants 10 constitués par des profilés en U dont les branches se font face, ces montants étant reliés par des entretoises horizontales II. On notera également que le sous-ensemble mobile comprend deux montants 12 susceptibles de coulisser le long des montants 10 et le long desquels peut également se déplacer une fourche de manutention 13. Although it is not necessary to describe in detail the structure of the lifting assembly, it will simply be noted that the fixed sub-assembly comprises two uprights 10 constituted by U-shaped profiles whose branches face each other, these uprights being connected by horizontal spacers II. It will also be noted that the mobile sub-assembly comprises two uprights 12 capable of sliding along the uprights 10 and along which a handling fork 13 can also move.
Dans l'exemple de réalisation représenté sur les dessins, les deux roues avant 2 sont pourvues chacune d'un organe propulseur 14 et peuvent donc être entraînés indépendamment l'une de l'autre. Elles sont en outre reliées chacune au châssis I par l'intermédiaire d'un dispositif de suspension comprenant un bras 15 articulé sur le châssis, en arrière de leur axe, autour d'un axe perpendiculaire à l'axe longitudinal du châssis, et un vérin amortisseur 16 s'étendant suivant l'axe d'articulation de leur fusée, ce vérin étant articulé par l'intermédiaire de rotules, respectivement sur le bras 15 et sur le châssis 1. In the embodiment shown in the drawings, the two front wheels 2 are each provided with a propellant member 14 and can therefore be driven independently of one another. They are also each connected to the chassis I by means of a suspension device comprising an arm 15 articulated on the chassis, behind their axis, around an axis perpendicular to the longitudinal axis of the chassis, and a damping cylinder 16 extending along the axis of articulation of their rocket, this cylinder being articulated by means of ball joints, respectively on the arm 15 and on the chassis 1.
Conformément à l'invention, l'ensemble élévateur 6 est à son tour relié au châssis par l'intermédiaire d'un dispositif de suspension qui, dans l'exemple représenté, comprend deux bras de liaison 17 dont les extrémités sont respectivement articulées sur le châssis et sur la partie inferieure du sousensemble fixe 7, et deux vérins amortisseurs 18 articulés chacun sur un bras 17 et sur le sous-ensemble 7. Comme on peut le voir sur la figure 1, les bras de liaison 17 et les vérins 18 constituent avec les montants 10, des triangles pouvant se déformer grâce aux vérins. In accordance with the invention, the lifting assembly 6 is in turn connected to the chassis by means of a suspension device which, in the example shown, comprises two connecting arms 17 whose ends are respectively articulated on the chassis and on the lower part of the fixed subassembly 7, and two damping jacks 18 each articulated on an arm 17 and on the subassembly 7. As can be seen in FIG. 1, the link arms 17 and the jacks 18 constitute with the uprights 10, triangles which can deform thanks to the jacks.
En se référant maintenant à la figure 2, on remarquera que les deux bras 17 sont reliés par une traverse 19 et sont pourvues chacun de deux pattes dans lesquelles s'étendent des axes 20 et 21 s'appuyant sur des chappes 22 et 23 portées respectivement par le châssis I et le sous-ensemble fixe 7. Referring now to FIG. 2, it will be noted that the two arms 17 are connected by a cross member 19 and are each provided with two lugs in which axes 20 and 21 extend, supported on chaps 22 and 23 carried respectively. by the chassis I and the fixed sub-assembly 7.
Les axes d'articulation et les longueurs des bras 17 sont choisis de telle façon que l'amplitude de déplacement du sous-ensemble fixe 7, parallèlement à l'axe longitudinal du châssis, soit réduite au minimum lors de l'entrée en action du dispositif de suspension de l'ensemble élévateur. The axes of articulation and the lengths of the arms 17 are chosen in such a way that the amplitude of movement of the fixed sub-assembly 7, parallel to the longitudinal axis of the chassis, is reduced to a minimum during the entry into action of the suspension device for the lifting assembly.
On remarquera enfin que les vérins d'inclinaison 24 de l'ensemble élévateur sont reportés à la partie supérieure de celui-ci qu'ils relient à la partie supérieure du protege-conducteur 5, ce qui permet de dégager l'espace situé entre les roues avant 2 et d'y installer sans difficulté les dispositifs de suspens ion. Finally, it will be noted that the tilt cylinders 24 of the lift assembly are carried over to the upper part of the latter, which they connect to the upper part of the conductor guard 5, which makes it possible to clear the space between the front wheels 2 and easily install the suspension devices there.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8108700A FR2504905A1 (en) | 1981-04-30 | 1981-04-30 | Fork-lift truck for use on rough surfaces - has suspension assembly between chassis and lifting gear and pair of parallel shock absorbers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8108700A FR2504905A1 (en) | 1981-04-30 | 1981-04-30 | Fork-lift truck for use on rough surfaces - has suspension assembly between chassis and lifting gear and pair of parallel shock absorbers |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2504905A1 true FR2504905A1 (en) | 1982-11-05 |
Family
ID=9257981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8108700A Withdrawn FR2504905A1 (en) | 1981-04-30 | 1981-04-30 | Fork-lift truck for use on rough surfaces - has suspension assembly between chassis and lifting gear and pair of parallel shock absorbers |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2504905A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0427001A1 (en) * | 1989-11-10 | 1991-05-15 | Jungheinrich Aktiengesellschaft | Lift truck with a movably arranged lift mast |
EP1205425A1 (en) * | 2000-11-10 | 2002-05-15 | Still Gmbh | Industrial truck with an independent wheel suspension |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2366378A (en) * | 1943-06-21 | 1945-01-02 | Gar Wood Ind Inc | Industrial truck |
FR990937A (en) * | 1948-07-19 | 1951-09-27 | Electro Hydraulics Ltd | Elevator transporter |
CH365332A (en) * | 1957-09-25 | 1962-10-31 | Bygg Och Transportekonomie Ab | Forklift |
GB1196624A (en) * | 1967-08-11 | 1970-07-01 | Ts Konstrucktorskoe Bjuro Proe | A Load Elevating Mechanism of Lift Truck |
-
1981
- 1981-04-30 FR FR8108700A patent/FR2504905A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2366378A (en) * | 1943-06-21 | 1945-01-02 | Gar Wood Ind Inc | Industrial truck |
FR990937A (en) * | 1948-07-19 | 1951-09-27 | Electro Hydraulics Ltd | Elevator transporter |
CH365332A (en) * | 1957-09-25 | 1962-10-31 | Bygg Och Transportekonomie Ab | Forklift |
GB1196624A (en) * | 1967-08-11 | 1970-07-01 | Ts Konstrucktorskoe Bjuro Proe | A Load Elevating Mechanism of Lift Truck |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0427001A1 (en) * | 1989-11-10 | 1991-05-15 | Jungheinrich Aktiengesellschaft | Lift truck with a movably arranged lift mast |
EP1205425A1 (en) * | 2000-11-10 | 2002-05-15 | Still Gmbh | Industrial truck with an independent wheel suspension |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |