FR2528027A2 - Lifting truck with non telescopic pivoted arms - has hydraulic connection between jib and fork actuators giving proportional movement - Google Patents
Lifting truck with non telescopic pivoted arms - has hydraulic connection between jib and fork actuators giving proportional movement Download PDFInfo
- Publication number
- FR2528027A2 FR2528027A2 FR8210078A FR8210078A FR2528027A2 FR 2528027 A2 FR2528027 A2 FR 2528027A2 FR 8210078 A FR8210078 A FR 8210078A FR 8210078 A FR8210078 A FR 8210078A FR 2528027 A2 FR2528027 A2 FR 2528027A2
- Authority
- FR
- France
- Prior art keywords
- jack
- boom
- fork
- jib
- 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.)
- Pending
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
- B66F9/065—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 non-masted
- B66F9/0655—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 non-masted with a telescopic boom
Abstract
Description
La présente invention est relative à des perfectionnements apportés à un chariot élévateur du type decrit au brevet principal. The present invention relates to improvements made to a forklift of the type described in the main patent.
On sait qu'un chariot élévateur du type décrit au brevet principal comporte trois vérins de commande référencés respectivement t - 28 pour commander l'orientation du bras 10 et notamment
son inclinaison par rapport à la verticale.We know that a forklift of the type described in the main patent has three control cylinders respectively referenced t - 28 to control the orientation of the arm 10 and in particular
its inclination relative to the vertical.
- 23 pour commander l'inclinaison de la flèche 18 articulée
on 12 sur le sommet du bras 10 - 23 pour commander l'horizontalité ou l'inclinaison de la
fourche de levage 30 par rapport à la flèche 18 sur la
quelle elle est articulée en 21.- 23 to control the inclination of the articulated boom 18
on 12 on the top of the arm 10 - 23 to control the horizontality or the inclination of the
lifting fork 30 relative to arrow 18 on the
which it is articulated in 21.
La flèche 18 est elle-môme télescopique, constituée par deux éléments 20 et 19 coulissant l'un dans l'au tre sous l'action d'un vérin intérieur. Enfin, le bras 10 est aussi téléscopique sous l'action d'un vérin 13. The boom 18 is itself telescopic, constituted by two elements 20 and 19 sliding one in the other under the action of an internal jack. Finally, the arm 10 is also telescopic under the action of a jack 13.
Un tel chariot élévateur à double bras télescopique articulé donne entièrement satisfaction sur le plan des performances ou des caractéristiques techniques. Cependant, il constitue parfois un matériel surabondant pour certaines applications t certains utilisateurs se contente raient d'un matériel plus simple et moins codteux. Such a forklift with double articulated telescopic arm is entirely satisfactory in terms of performance or technical characteristics. However, it sometimes constitutes an overabundant material for certain applications and certain users are content with simpler and less expensive material.
La présente addition a pour but de répondre à ce désir en perfectionnant le chariot élévateur selon l'invention on vue de réaliser une version simplifiée, tant du point de vue de la mécanique, qu'eu ce qui concerne la com zende hydraulique. The purpose of this addition is to respond to this desire by perfecting the forklift according to the invention, in order to produce a simplified version, both from the point of view of mechanics, and with regard to the hydraulic power.
Un chariot élévateur selon ltaddition comprend, comme au brevet principal, un bras orientable sensiblement vertical commandé par un vérin d'orintation 15 et sur le sommet duquel est articulée en 12, sous la commande d'un vérin d'orientation, une flèche portant à son extrémité 21 l'axe d'articulation d'une fourche de levage 30 dont l'orientation est commandée par un vérin de la flèche, et il est caractérisé en ce que le bras orientable 50, aussi bien que la flèche 51 sont tous deux réalisés d'une pièce non téles copique, tandis que le vérin 52 pour l'orientation de la flèche 31 sur le bras 50 est couplé hydrauliquement au vérin 53 placé sur la flèche 51, pour commander l'orientation de la fourche 30. A forklift according to the addition comprises, as in the main patent, a substantially vertical orientable arm controlled by a slewing cylinder 15 and on the top of which is articulated at 12, under the control of an orientation cylinder, an arrow bearing its end 21 the articulation axis of a lifting fork 30 the orientation of which is controlled by a jack of the boom, and it is characterized in that the orientable arm 50, as well as the boom 51 are both made of a non-telescopic part, while the jack 52 for the orientation of the arrow 31 on the arm 50 is hydraulically coupled to the jack 53 placed on the arrow 51, to control the orientation of the fork 30.
Suivant une autre caractéristique de l'invention, le couplage hydraulique est constitué par une canalisation mettant en permanence en communication la chambre du vérin 52 qui diminue de volume lorsquton soulève la flèche 51 avec la chambre du vérin 53, qui augmente de volume lorsque ce dernier abaisse la fourche de levage 30. According to another characteristic of the invention, the hydraulic coupling consists of a pipe permanently placing the cylinder chamber 52 in communication which decreases in volume when the boom 51 is raised with the cylinder chamber 53, which increases in volume when the latter lowers the lifting fork 30.
Suivant une autre caractéristique de l'invention, le couplage hydraulique relie la grande section du vérin 53 dont la petite section contient un ressort de rappel de compression, à la petite section du vérin 52 dont la grande section est reliée à une source de fluide hydraulique sous pression. According to another characteristic of the invention, the hydraulic coupling connects the large section of the jack 53, the small section of which contains a compression return spring, to the small section of the jack 52, the large section of which is connected to a source of hydraulic fluid. under pressure.
Dans ces conditionst on comprend que le fonctionnement complet du chariot selon l'addition puisse 8tre obtenu en commandant seulement deux vérins, à savoir le vérin d'orientation du bras "vertical" 50, et le vérin 52 comman- dant l'orientation de la flèche 51. In these conditions it is understood that the complete operation of the carriage according to the addition can be obtained by controlling only two jacks, namely the orientation jack of the "vertical" arm 50, and the jack 52 controlling the orientation of the arrow 51.
Le dessin annexé, donné à titre d'exemple non li itatif,permettra de mieux comprendre les caractéristiques de l'addition. The appended drawing, given by way of nonlimiting example, will allow a better understanding of the characteristics of the addition.
Figure 1 est une vue d'ensemble d'un chariot élévateur selon l'addition. Figure 1 is an overview of a forklift according to the addition.
Figure 2 est une vue analogue, pour une autre position. Figure 2 is a similar view, for another position.
Figure 3 illustre le couplage hydraulique des deux vérins, lorsque la flèche est en position basse. Figure 3 illustrates the hydraulic coupling of the two cylinders, when the boom is in the low position.
Figure 4 est une vue analogue du couplage hydraulique pour une position intermédiaire pouvant être celle de la figure 1. FIG. 4 is a similar view of the hydraulic coupling for an intermediate position which may be that of FIG. 1.
Les mêmes chiffres de référence ont été conservés pour ceux des organes de l'addition qui correspondent iden- tiquement à ceux du brevet principal. En particulier, le châssis du chariot porte à l'avant un axe transversal horizontal 14 sur lequel est articulée la base d'un bras 50 qui n'est pas télescopique. Ce bras 50, dit bras "vertical", bien que son orientation puisse osciller autour de la verticale, est relié à un point fixe 28 du chassies du chariot, par un
vérin d'orientation 15.The same reference numbers have been kept for those of the addition organs which correspond exactly to those of the main patent. In particular, the chassis of the carriage carries at the front a horizontal transverse axis 14 on which the base of an arm 50 which is not telescopic is articulated. This arm 50, known as the "vertical" arm, although its orientation can oscillate around the vertical, is connected to a fixed point 28 of the carriage expulsions, by a
orientation cylinder 15.
Le bras 50 est réalisé de façon monobloc, et il
porte à son sommet un axe d'articulation 12, sur lequel pi
vote le pied d'une flèche 51. Cette dernière est également
monoblocs non télescopique. Elle porte, à son extrémité, un
pivot horizontal transversal 21 sur lequel vient pivoter la
fourche de levage 30.The arm 50 is made in one piece, and it
carries at its apex a hinge pin 12, on which pi
votes the foot of an arrow 51. The latter is also
non-telescopic monoblocks. It carries, at its end, a
transverse horizontal pivot 21 on which the
lifting fork 30.
Entre le bras "vertical" 50, et la flèche 51, est
intercalé un vérin de commande d'orientation 52, qui est un
vérin hydraulique à double effet. La chambre 34 correspon-
dant à la grande section de ce vérin est reliée par une ca
nalisation 33 à une centrale hydraulique de fluide sous
pression, d'un type connu et non représenté.Between the "vertical" arm 50, and the arrow 51, is
interposed an orientation control cylinder 52, which is a
double acting hydraulic cylinder. Room 34 corresponds to
dant to the large section of this cylinder is connected by a ca
nalisation 33 at a hydraulic fluid power plant under
pressure, of a known type and not shown.
La chambre opposé 56, qui correspond à la petite
section, est reliée par une canalisation 57, à la chambre 58
correspondant à la grande section, sur un vérin d'orienta
tion 53, intercalé entre la flèche 31 et le sommet de la
palette de levage 30. La chambre 39 correspondant à la pe-
tite section sur le vérin 33 contient un vérin de rappel
60.Opposite chamber 56, which corresponds to the small
section, is connected by a pipe 57, to the chamber 58
corresponding to the large section, on a cylinder of orienta
tion 53, sandwiched between arrow 31 and the top of the
lifting pallet 30. The chamber 39 corresponding to the small
this section on the cylinder 33 contains a return cylinder
60.
La tige 61 du vérin 33 est reliée à la fourche
30. tandis que le corps de ce vérin 33 est porté par la flè
che 31. The rod 61 of the jack 33 is connected to the fork
30. while the body of this jack 33 is carried by the beam
che 31.
De même, le corps du vérin 52 est relié au bras
"vertical" 50, tandis que la tige 62 du vérin 52 est rac
cordée à la flèche 31.Similarly, the body of the cylinder 52 is connected to the arm
"vertical" 50, while the rod 62 of the jack 52 is rac
strung to arrow 31.
Le fonctionnement est le suivant t
Pour commander les variations d'inclinaison du bras "vertical" 30, on procède comme au brevet principal,
en actionnant le vérin 13.The operation is as follows t
To control the inclination variations of the "vertical" arm 30, we proceed as in the main patent,
by actuating the cylinder 13.
Par contre, lorsqu'on envoie la pression hydrauli
que en 53, on provoque l'allongement du vérin 32, ce qui
provoque le soulèvement de la flèche 51 comme indiqué sur la
figure 1, par la flèche 63. Simultanément, la chambre à pe
tite section 56 du vérin 52 refoule dans la canalisation 57,
ce qui provoque l'allongement du vérin 53 et le basculement
de la fourche 30 vers le bas, comme schématisé en figure 1,
par la flèche 64.On the other hand, when the hydraulic pressure is sent
that in 53, the cylinder 32 is elongated, which
causes boom 51 to rise as shown in the
Figure 1, by arrow 63. Simultaneously, the pe
tite section 56 of the jack 52 pushes back into the pipe 57,
which causes the lengthening of the jack 53 and the tilting
from the fork 30 downwards, as shown diagrammatically in FIG. 1,
by arrow 64.
inversement, il sufrit de reldcher la pression dans la chambre 54, pour que l'action conjuguée du ressort 60 et du poids des organes 30, 51, auquel s'ajoute le poids du fardeau 65 porté par la fourche 30, provoque la rentrée du vérin 53* Ce dernier refoule alors, par sa chambre 582 dans la chambre 56 du vérin 52, qui rentre à son tour. En fin d'opération, on se trouve à la position illustrée sur la figure 3. conversely, it suffices to relieve the pressure in the chamber 54, so that the combined action of the spring 60 and the weight of the members 30, 51, to which is added the weight of the burden 65 carried by the fork 30, causes the retraction of the actuator 53 * The latter then drives back through its chamber 582 into chamber 56 of the actuator 52, which in turn returns. At the end of the operation, we are in the position illustrated in FIG. 3.
On voit que la commande hydraulique scexerce de façon très simple, puisqulil suffit de raccorder une seule canalisation 55 du vérin 52, pour actionner dans les deux sens à la fois le vérin 52 et le vérin 53. L'ensemble assure le maintien de la fourche 30 sensiblement à l'horizontalet pendant toutes les opérations, quelle que soit Irinclinaison de la flèche 5t. It can be seen that the hydraulic control operates very simply, since it suffices to connect a single pipe 55 of the jack 52, to actuate in both directions both the jack 52 and the jack 53. The assembly ensures the maintenance of the fork 30 substantially horizontally and during all operations, regardless of the inclination of the arrow 5t.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8210078A FR2528027A2 (en) | 1982-01-29 | 1982-06-03 | Lifting truck with non telescopic pivoted arms - has hydraulic connection between jib and fork actuators giving proportional movement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8201756A FR2520715A1 (en) | 1982-01-29 | 1982-01-29 | Fork lift truck - has articulated telescopic arms which enable fork to be manipulated |
FR8210078A FR2528027A2 (en) | 1982-01-29 | 1982-06-03 | Lifting truck with non telescopic pivoted arms - has hydraulic connection between jib and fork actuators giving proportional movement |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2528027A2 true FR2528027A2 (en) | 1983-12-09 |
Family
ID=26222736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8210078A Pending FR2528027A2 (en) | 1982-01-29 | 1982-06-03 | Lifting truck with non telescopic pivoted arms - has hydraulic connection between jib and fork actuators giving proportional movement |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2528027A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2575825A (en) * | 2018-07-24 | 2020-01-29 | Cargotec Res & Development Ireland Limited | A truck mounted forklift |
-
1982
- 1982-06-03 FR FR8210078A patent/FR2528027A2/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2575825A (en) * | 2018-07-24 | 2020-01-29 | Cargotec Res & Development Ireland Limited | A truck mounted forklift |
WO2020020971A1 (en) * | 2018-07-24 | 2020-01-30 | Cargotec Research & Development Ireland Limited | A truck mounted forklift |
GB2575825B (en) * | 2018-07-24 | 2022-04-20 | Cargotec Res & Development Ireland Limited | A truck mounted forklift |
US11608255B2 (en) * | 2018-07-24 | 2023-03-21 | Cargotec Research & Development Ireland Limited | Truck mounted forklift |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1323020C (en) | Landing gear with swivelling beam | |
EP0733584A1 (en) | Automatic erection for a crane with a foldable boom | |
CA1196315A (en) | Adjustable chain anchor for lift trucks | |
EP1932717A1 (en) | Hydraulic locking device for a lifting arm | |
FR2521969A1 (en) | VEHICLE TRANSPORTABLE MACHINE, CAPABLE OF LIFTING A NACELLE AT DIFFERENT HEIGHTS | |
FR2528027A2 (en) | Lifting truck with non telescopic pivoted arms - has hydraulic connection between jib and fork actuators giving proportional movement | |
EP0100926A1 (en) | Material handling vehicle with an orientable arm and incorporated stabiliser frame | |
EP0401100A1 (en) | Trailer suspensions | |
FR2464624A1 (en) | Agricultural implement support linkage - has carrier arm pivoted to actuating arms with hydraulic cylinders | |
FR2615157A1 (en) | Improved tractor especially for a semi-trailer | |
EP1103512A1 (en) | Variable reach crane jib with automatic counterbalancing device | |
EP1609358B1 (en) | Pendular ramp assembly and sprayer with such an assembly | |
FR2577302A1 (en) | Stabiliser with variable inclination and retractable base plate | |
CH343239A (en) | Device for coupling a semi-mounted trailer to a tractor | |
US3450436A (en) | High-lift side dump mechanism | |
FR2466427A1 (en) | CRANE, INCLUDING CRANE OF LARGE DIMENSIONS | |
EP1053670B1 (en) | Brush cutting machine | |
FR2718769A1 (en) | Articulated arm assembly, esp for an earth-moving vehicle | |
EP0077308B1 (en) | Vehicle for loading, excavating, transportation over short distances and for unloading materials at variable heights | |
FR2484984A1 (en) | FORK LIFT DEVICE FOR AGRICULTURAL TRACTORS LIFTING PARTICULARLY LARGE HAY OR STRAW BOOTS | |
FR2509711A1 (en) | Platform or cabin lift for vehicle - has hydraulically operated and pivoted upper and lower arms on chassis | |
CA1134888A (en) | Cover for dump trucks | |
FR2511406A1 (en) | Shovel chassis for excavator - incorporates stabilising arms which are vertically and horizontally adjustable | |
FR2869195A1 (en) | Machine for e.g. mowing, has boom cylinder with single and double-acting jacks having chambers coupled to hydraulic circuit which has valve placed in position in which fluid circulates in two directions and slide in assembled position | |
FR2596378A1 (en) | Loading device with rapid compensation and locking for agricultural tractors and the like |