EP0077308B1 - Vehicle for loading, excavating, transportation over short distances and for unloading materials at variable heights - Google Patents

Vehicle for loading, excavating, transportation over short distances and for unloading materials at variable heights Download PDF

Info

Publication number
EP0077308B1
EP0077308B1 EP82830246A EP82830246A EP0077308B1 EP 0077308 B1 EP0077308 B1 EP 0077308B1 EP 82830246 A EP82830246 A EP 82830246A EP 82830246 A EP82830246 A EP 82830246A EP 0077308 B1 EP0077308 B1 EP 0077308B1
Authority
EP
European Patent Office
Prior art keywords
bucket
pair
pivoted
plates
rocker
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.)
Expired
Application number
EP82830246A
Other languages
German (de)
French (fr)
Other versions
EP0077308A2 (en
EP0077308A3 (en
Inventor
Fabio Messersi
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.)
Flli Messersi'- SpA
Original Assignee
Flli Messersi'- SpA
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 Flli Messersi'- SpA filed Critical Flli Messersi'- SpA
Priority to AT82830246T priority Critical patent/ATE25722T1/en
Publication of EP0077308A2 publication Critical patent/EP0077308A2/en
Publication of EP0077308A3 publication Critical patent/EP0077308A3/en
Application granted granted Critical
Publication of EP0077308B1 publication Critical patent/EP0077308B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3405—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3417—Buckets emptying by tilting

Definitions

  • Drawing No. 1 is a side view of the machine according to the invention with the bucket in the rest position which is also the running position of the machine.
  • Drawing No. 4 is a side view of the machine according to the invention with the bucket raised to its maximum height and also overturned frontally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Loading Or Unloading Of Vehicles (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Jib Cranes (AREA)
  • Operation Control Of Excavators (AREA)
  • Chutes (AREA)

Abstract

The bucket can be lifted from its work position, during which it is immediately above the front axle of the vehicle, as far as the maximum height while its inclination w.r.t. a horizontal axis remains unchanged. It can move forward and downward while its initial position w.r.t. a horizontal axis remains unchanged and can also tip forward by rotation w.r.t. a horizontal axis. The third movement is obtained by expansion of an hydraulic jack whose shaft (17a) is attached to the top edge of the bucket (1) and whose cylinder (17) is pivoted horizontally on a brace which comprises a pair of L-shaped arms (2).

Description

La présente requête de brevet pour invention industrielle concerne un engin d'utilité servant principalement sur les chantiers de construction, destiné soit à l'autochargement, soit au creusement, soit au transport sur courtes distances soit au déchargement de matériaux inertes (terre, gravier, pierraille, sable...), caractérisé par la plus vaste possible gamme d'articulations universelles dont dispose la benne, pouvant ainsi agir soit comme pelle mécanique soit comme benne basculante ayant un renversement frontal à hauteur réglable conformément à la revendication.The present patent application for industrial invention relates to a utility vehicle mainly used on construction sites, intended either for self-loading, or for digging, or for transport over short distances or for the unloading of inert materials (earth, gravel, stone, sand ...), characterized by the widest possible range of universal joints available to the bucket, thus being able to act either as a mechanical shovel or as a tipping bucket having a front tilting with adjustable height according to the claim.

A propos de la benne susdite, il s'agit plus précisément de sa capacité, à partir de sa position de repos et donc de la position de marche de l'engin, position durant laquelle elle stationne au-dessus et à proximité de l'axe antérieur du véhicule, comme dans tout autre dumper traditionnel, sa capacité donc, d'être abaissée vers l'avant jusqu'au sol ou bien d'être soulevée vers le haut en maintenant toujours la même inclination par rapport à un axe horizontal..About the aforementioned grab, it is more precisely its capacity, from its rest position and therefore from the walking position of the machine, position during which it parks above and near the front axle of the vehicle, as in any other traditional dumper, its capacity therefore, to be lowered forward to the ground or to be lifted upwards while always maintaining the same inclination with respect to a horizontal axis. .

Pendant son évolution verticale, la benne peut donc être arrêtée à n'importe quelle hauteur et peut donc basculer vers l'avant pour effectuer le déchargement dans le cas de la benne soulevée ou bien, dans le cas de la benne abaissée pour effectuer le déblaiement frontal au sol.During its vertical evolution, the bucket can therefore be stopped at any height and can therefore tilt forwards to perform the unloading in the case of the raised bucket or, in the case of the lowered bucket to perform the excavation frontal to the ground.

L'engin en objet se base fondamentalement sur l'emploi de trois groupes de leviers :

  • 10 leviers à quatre bras pour le soulèvement de la benne à la hauteur maximum, en maintenant inchangée son inclinaison initiale par rapport à un axe horizontal ;
  • II° leviers à quatre bras pour le déplacement vers l'avant et vers le bas de la benne, en maintenant presque inchangée son inclinaison initiale par rapport à un axe horizontal ;
  • III° leviers pour la rotation de la benne par rapport à un axe horizontal.
The object in question is basically based on the use of three groups of levers:
  • 1 0 four-arm levers for lifting the bucket to the maximum height, maintaining unchanged its initial inclination relative to a horizontal axis;
  • II ° levers with four arms for the forward and downward movement of the bucket, maintaining almost unchanged its initial inclination relative to a horizontal axis;
  • III ° levers for the rotation of the bucket relative to a horizontal axis.

La principale et qualifiante caractéristique des trois groupes de leviers susdits est celle d'avoir fonctions complètement autonomes ;

  • tous les mouvements indépendants et compatibles entre eux sans nécessité de compensation de la part de l'opérateur ou à l'aide de soupapes oléodynamiques;
  • possibilité de passer directement de la position benne au sol à celle de benne à la hauteur maximum, sans devoir nécessairement passer par une position intermède du type « dumper » ou vice versa.
The main and qualifying characteristic of the three groups of aforementioned levers is that of having completely autonomous functions;
  • all movements independent and compatible with each other without the need for compensation from the operator or using hydraulic valves;
  • possibility of going directly from the grab position on the ground to that of the grab at maximum height, without necessarily having to go through an intermediate position of the “dumper” type or vice versa.

Les avantages qui en résultent sont : une grande rapidité de manceuvre, simplicité et sûreté des commandes, possibilité de combinaisons des mouvements qui permettent à la benne d'assumer des positions originales, utiles pour certains travaux.The resulting advantages are: great speed of maneuver, simplicity and safety of controls, possibility of combinations of movements which allow the bucket to assume original positions, useful for certain works.

Ce qui est décrit ci-dessus ne se relève pas dans la technique antérieure et plus particulièrement dans les brevets US-A-3 370 729 et US-A-2978124.What is described above does not arise in the prior art and more particularly in US-A-3,370,729 and US-A-2,978,124.

Dans le brevet US-A-3 370 729, un des quatre bras décrits au point n° I, est constitué d'un cylindre hydraulique au moyen duquel on obtient l'articulation du quadrilatère et indirectement la manœuvre simultanée de la benne, à la différence de la machine selon la présente invention où l'actionnement de la benne n'est absolument pas subordonné à l'actionnement des leviers décrits au point i°.In US-A-3,370,729, one of the four arms described in point I, consists of a hydraulic cylinder by means of which the articulation of the quadrilateral is obtained and indirectly the simultaneous maneuvering of the bucket, at the difference from the machine according to the present invention where the actuation of the bucket is absolutely not subject to the actuation of the levers described in point i °.

Dans le brevet US-A-2 978 124, les deux leviers correspondants à ceux des points 10 et II°, ne sont pas indépendants entre eux, et conséquemment leurs mouvements ne peuvent s'effectuer inconditionnellement l'un sans l'autre, créant par conséquence certaines incompatibilités dans la succession temporaire de certains déplacements des leviers mêmes.In patent US-A-2 978 124, the two levers corresponding to those of points 1 0 and II °, are not independent from one another, and consequently their movements cannot be carried out unconditionally one without the other, consequently creating certain incompatibilities in the temporary succession of certain movements of the levers themselves.

La présente invention permet donc, au moyen d'un seul engin, d'effectuer une série d'opérations, soit de chargement, soit de transport, soit de déchargement à hauteur variable de matériaux inertes, opérations qui jusqu'à présent nécessitaient l'emploi d'équipements spécifiques variés, comme par exemple les pelles mécaniques et les dumpers munis de renversement frontal à hauteur variable.The present invention therefore makes it possible, by means of a single machine, to carry out a series of operations, either of loading, or of transport, or of variable height unloading of inert materials, operations which hitherto required the use of various specific equipment, such as mechanical shovels and dumpers fitted with variable-height front tilting.

Pour être plus claire, la description se poursuivra en se référant aux dessins en annexe, dessins qui sont reportés uniquement à titre d'illustration et non pas d'indication, dessins où l'on a représenté une forme préférée de réalisation de l'invention.To be clearer, the description will continue with reference to the accompanying drawings, drawings which are given for illustration only and not for indication, drawings in which a preferred embodiment of the invention has been shown. .

Le dessin n° 1 est une vue latérale de l'engin selon l'invention avec la benne en position de repos qui est également la position de marche de l'engin.Drawing No. 1 is a side view of the machine according to the invention with the bucket in the rest position which is also the running position of the machine.

Le dessin n° 2 est une vue latérale de l'engin selon l'invention avec la benne abaissée jusqu'au sol.Drawing No. 2 is a side view of the machine according to the invention with the bucket lowered to the ground.

Le dessin n° 3 est une vue latérale de l'engin selon l'invention avec la benne soulevée à sa hauteur maximum et non renversée frontalement.Drawing No. 3 is a side view of the machine according to the invention with the bucket raised to its maximum height and not overturned frontally.

Le dessin n° 4 est une vue latérale de l'engin selon l'invention avec la benne soulevée à sa hauteur maximum et également renversée frontalement.Drawing No. 4 is a side view of the machine according to the invention with the bucket raised to its maximum height and also overturned frontally.

Le dessin n° est une vue du haut de l'engin selon l'invention avec la benne abaissée vers l'avant jusqu'au sol et renversée frontalement jusqu'à se poser sur le sol même.The drawing n ° is a top view of the machine according to the invention with the bucket lowered forward to the ground and overturned frontally until it lands on the ground itself.

En référence aux dessins susdits, et en admettant que tout mécanisme présente un plan de symétrie vertical perpendiculaire à l'axe longitudinal de la benne, la benne même se compose d'une caisse (1), qui présente une section transversale presque triangulaire, munie de trois points d'attache, qui sont constitués par des couples de tourillons, dont deux sont symétriques (1 a) placés en dessous de la caisse et dont le troisième, intermédiaire (1b) se trouve en saillie externe le long du bord postérieur de la caisse même.Referring to the above drawings, and assuming that any mechanism has a vertical plane of symmetry perpendicular to the longitudinal axis of the bucket, the bucket itself consists of a body (1), which has an almost triangular cross section, provided three attachment points, which consist of pairs of pins, two of which are symmetrical (1a) placed below the body and the third, intermediate (1b) of which is projecting external along the rear edge of the body itself.

Sur chacun des couples de tourillons inférieurs (1a) se trouvent horizontalement fixés, par charnières, une équerre à « L (2) et un basculeur (3).On each of the pairs of lower trunnions (1a) are horizontally fixed, by hinges, a "L" square (2) and a rocker (3).

Chaque équerre en « L » (2) pivote, de la partie terminale opposée à l'extrémité d'un pivot horizontal (4) sur lequel sont fixés deux fléaux (5) opposés et légèrement espacés, qui ensemble forment un levier unique, appuyant, à l'extrémité opposée sur un pivot horizontal (6) prévu sur le châssis, formé de deux plaques (7) identiques et opposées, espacées entre elles dans la mesure qui leur permet de contenir exactement la paire de fléaux (5) susdits.Each L-shaped bracket (2) pivots, from the opposite end to the end of a horizontal pivot (4) on which are fixed two opposite and slightly spaced beams (5), which together form a single lever, pressing , at the opposite end on a horizontal pivot (6) provided on the chassis, formed of two identical and opposite plates (7), spaced apart to the extent that allows them to contain exactly the pair of flails (5) above.

Ce châssis est donc fixé par charnières sur un pivot horizontal (8) débordant extérieurement au sommet d'un long bras de soulèvement (9) appuyé à la base sur une structure portante (10) solidement attachée sur le châssis de l'engin.This chassis is therefore fixed by hinges on a horizontal pivot (8) projecting externally at the top of a long lifting arm (9) supported at the base on a supporting structure (10) securely attached to the chassis of the machine.

Les plaques internes de chaque paire de plaques (7) sont solidaires grâce à une entretoise (11) qui présente en ligne médiane, deux tourillons (11 a), entre lesquels est attaché un tirant (12), pivoté à l'autre extrémité, à la structure portante (10) susdite, de manière à permettre que cette dernière puisse faire fonction de châssis dans un quadrilatère articulé qui se compose de deux basculeurs, respectivement constitués par le couple de bras (9) et par le tirant (12) ainsi que par une bielle, composée de deux châssis de plaques (7) unis par l'entretoise (11).The internal plates of each pair of plates (7) are secured by a spacer (11) which has, in the center line, two pins (11 a), between which is attached a tie rod (12), pivoted at the other end, to the aforementioned supporting structure (10), so as to allow the latter to act as a chassis in an articulated quadrilateral which is made up of two rockers, respectively constituted by the pair of arms (9) and by the tie rod (12) thus as by a connecting rod, composed of two plate chassis (7) joined by the spacer (11).

Le couple de bras (9) peut pivoter par rapport au châssis (10) grâce à l'action d'un vérin hydraulique (13), dont la chambre pivote sur la structure portante (10) et dont la tige (13) est attachée au milieu de l'entretoise qui unit les deux bras (9).The pair of arms (9) can pivot relative to the chassis (10) thanks to the action of a hydraulic cylinder (13), the chamber of which pivots on the supporting structure (10) and the rod (13) of which is attached in the middle of the spacer which unites the two arms (9).

A ce propos on précise que c'est justement grâce au quadrilatère ainsi conçu (quadrilatère articulé) qu'il est possible de soulever la benne de sa position de repos en maintenant son inclinaison par rapport à un axe horizontal inchangé.In this regard, it should be pointed out that it is precisely thanks to the quadrilateral thus designed (articulated quadrilateral) that it is possible to lift the bucket from its rest position while maintaining its inclination relative to an unchanged horizontal axis.

Les basculeurs (3) susdits, pivotés à une extrémité aux tourillons inférieurs (1a), comme il a déjà été décrit, pivotent à l'extrémité opposée, autour d'un pivot (14), fixé entre chaque paire de plaques (7) et auquel s'attache la tige (15a) d'un vérin hydraulique, dont la chambre (15) est pivotée horizontalement, en position basculante, à l'intérieur et à la mi-longueur environ du couple de tiges (5) susdites.The above-mentioned rockers (3), pivoted at one end to the lower pins (1a), as already described, pivot at the opposite end, around a pivot (14), fixed between each pair of plates (7) and to which the rod (15a) of a hydraulic cylinder is attached, the chamber (15) of which is pivoted horizontally, in the tilting position, inside and approximately halfway along the pair of rods (5) above.

A ce propos on précise que, quand la benne est en position de repos - position de marche de l'engin - ledit vérin hydraulique (15) se trouve en pleine expansion, et sa rétraction comporte donc, vu que les plaques (7) ne peuvent pas tourner sur le pivot (8) parce qu'elles sont bloquées par le tirant (12) l'oscillation vers l'avant des leviers (5) autour du pivot (6) avec un déplacement conséquent vers l'avant et en bas de la caisse (1), qui maintient presque inchangée son inclinaison initiale par rapport à l'axe horizontal.In this regard, it is specified that, when the bucket is in the rest position - machine operating position - said hydraulic cylinder (15) is in full expansion, and its retraction therefore comprises, since the plates (7) do not cannot rotate on the pivot (8) because they are blocked by the pulling (12) the forward oscillation of the levers (5) around the pivot (6) with a consequent movement forward and down of the body (1), which maintains almost unchanged its initial inclination relative to the horizontal axis.

Pendant cette évolution de la benne, les plaques (7) se trouvent faire fonction de châssis dans un quadrilatère articulé qui se compose de deux basculeurs, qui se composent respectivement des tiges doubles (5) et de la tige (3) ainsi que d'une bielle constituée par l'équerre à « L (2).During this evolution of the bucket, the plates (7) are found to act as a frame in an articulated quadrilateral which is composed of two rockers, which consist respectively of the double rods (5) and the rod (3) as well as a connecting rod formed by the square at "L (2).

Les équerres en « L » (2) sont solidaires grâce à une entretoise (16), en ligne médiane de laquelle pivote horizontalement un vérin hydraulique (17), dont la tige (17a) est attachée au couple de tourillons (1b), sur la partie postérieure de la caisse.The “L” brackets (2) are integral with a spacer (16), in the center line of which a hydraulic cylinder (17) pivots horizontally, the rod (17a) of which is attached to the pair of pins (1b), on the rear part of the body.

Il est évident que l'expansion du vérin hydraulique provoque un renversement frontal de la benne (1) ayant été prévue une rotation maximum de 90°.It is obvious that the expansion of the hydraulic cylinder causes a frontal overturning of the bucket (1) having been provided for a maximum rotation of 90 °.

Dans le dessin n° 1 la position de la benne a été représentée par une ligne hachurée, position de la benne (1) lorsque le vérin (17) est complètement en expansion.In drawing n ° 1 the position of the bucket has been represented by a hatched line, position of the bucket (1) when the jack (17) is fully expanding.

La position dessinée avec une ligne continue dans le dessin n° 2 s'obtient en partant de la position de repos ou position de marche de l'engin, en actionnant simplement les vérins hydrauliques (15) jusqu'à obtenir leur contraction complète.The position drawn with a continuous line in drawing No. 2 is obtained by starting from the rest position or the operating position of the machine, by simply actuating the hydraulic jacks (15) until their complete contraction is obtained.

Les positions indiquées au moyen d'une ligne hachurée dans le dessin n° 2, correspondent, au contraire, à deux positions particulières de la benne renversée frontalement : dans un cas, le bord frontal de la paroi antérieure de la caisse coïncide avec le terrain, c'est-à-dire en position de chargement frontal par rampement, alors que dans l'autre cas, le bord frontal de la benne se trouve enfoncé dans le terrain, position apte pour un creusement frontal.The positions indicated by means of a hatched line in the drawing n ° 2, correspond, on the contrary, to two particular positions of the grab overturned frontally: in one case, the front edge of the front wall of the body coincides with the ground , that is to say in the front loading position by crawling, while in the other case, the front edge of the bucket is pressed into the ground, position suitable for front excavation.

A ce propos on souligne la possibilité de l'auto- chargement qu'a la caisse (1) parce que, après avoir recueilli le matériel, la benne peut se retirer et se loger à nouveau sur le devant de l'engin, en maintenant constamment pendant cette évolution sa propre position horizontale et en évitant ainsi la sortie du matériel qui a été chargé.In this regard, we emphasize the possibility of self-loading that has the body (1) because, after having collected the material, the bucket can withdraw and be housed again on the front of the machine, maintaining constantly during this evolution its own horizontal position and thus avoiding the exit of the material which has been loaded.

Dans les dessins 3 et 4 on a représenté au moyen d'une ligne hachurée la position qu'occupe la benne dans les deux cas à la suite de la mise en marche des vérins hydrauliques (15), avec un rappel vers l'avant conséquent des deux leviers (5).In drawings 3 and 4 is shown by means of a hatched line the position occupied by the bucket in both cases following the start of the hydraulic cylinders (15), with a consequent forward recall of the two levers (5).

A la place du conducteur de l'engin, trois leviers ont été prévus pour la mise en marche des vérins hydrauliques :

  • un levier de mise en marche du vérin hydraulique (17) pour conduire les opérations de déchargement, d'auto-chargement et de creusement ;
  • un levier de mise en marche des vérins hydrauliques (15) pour incliner la benne vers l'avant et vers le bas en maintenant la même inclinaison initiale par rapport à un axe horizontal ;
  • un levier de mise en marche du vérin hydraulique (13) pour soulever la benne de sa position de repos et de mise en marche de l'engin, en maintenant inchangée l'inclinaison initiale par rapport à un axe horizontal.
Instead of the operator of the machine, three levers have been provided for starting the hydraulic cylinders:
  • a lever for starting the hydraulic cylinder (17) to conduct the unloading, self-loading and digging operations;
  • a lever for switching on the hydraulic cylinders (15) for tilting the bucket forwards and downwards while maintaining the same initial inclination relative to a horizontal axis;
  • a lever for starting the hydraulic cylinder (13) for lifting the bucket from its rest position and for starting the machine, keeping the initial inclination unchanged with respect to a horizontal axis.

On spécifie également que tous les vérins hydrauliques sont à double effet et il est donc possible d'arrêter la benne dans n'importe quelle position intermédiaire entre les deux positions extrêmes prévues pour toute évolution de la benne même.It is also specified that all the hydraulic cylinders are double acting and it is therefore possible to stop the bucket in any intermediate position between the two extreme positions provided for any change in the bucket itself.

Après tout ce qui a été exposé en référence aux illustrations reportées, il est évident de considérer l'engin examiné comme ayant d'une part, toutes les caractéristiques d'un dumper traditionnel, c'est-à-dire encombrements réduits et extrême maniabilité durant les phases de transport et d'autre part, comme présentant une articulation très vaste de la caisse, ce qui est la caractéristique propre de la pelle mécanique et chargeuse par rapport à laquelle, la benne en question déploie également un mouvement de rétraction sur le devant de l'engin.After all that has been explained with reference to the illustrations shown, it is obvious to consider the machine examined as having on the one hand, all the characteristics of a traditional dumper, that is to say reduced dimensions and extreme maneuverability during the transport phases and on the other hand, as having a very large articulation of the body, which is the characteristic of the mechanical shovel and loader with respect to which, the skip in question also deploys a retraction movement on the in front of the craft.

Claims (3)

1. Motor vehicle suitable for self-loading, excavation, transport over short distances, and for the unloading of aggregates at adjustable height levels, characterised by the fact that the bucket can carry out the following independent movements, which are all hydraulically controlled with double-acting cylinders :
a) front dumping of the bucket by means of rotation with respect to a horizontal axis. The abovementioned front dumping is obtained by means of the expansion of a hydraulic jack (17), the stem (17a) of which is attached to the upper edge of the box (1), while the jacket (17) is horizontally pivoted on a cross member (16) which joins two symmetrical L' squares (2) hinged together at one end, on two paires of lugs (1 a) positioned under the box (1) ;
b) front downvards movement of the bucket, while keeping its original position almost unchanged with respect to a horizontal axis. The above-mentioned front downwards movement is obtained by means of two identical articulated quadrilaterals, which are symmetrical and opposite each other and consist of :
- a frame, made up of two plates opposite each other (7) ;
- a rocker, made up of two rods opposite each other (5), slightly spaced and both pivoted on a horizontal pin (6) internally to the pair of above- mentioned plates (7) ;
- a second rocker, made up of a rod (3), which is pivoted on a horizontal pin (14) on one side and on the pair of lugs (1a) on the other, internally to the pair of plates (7) ;
- a connecting rod made up of one of the two ' L' squares (2) mentioned above, pivoted on a pair of lugs (1a) on one side and on a horizontal pin (4a) on the other, which protrudes from the rocker consisting of the abovementioned rods opposite each other (5). The forward rotation of the rockers (3) and (5) is obtained by the retraction of a hydraulic jack (15), the stem of which is attached to the frame (7) at the abovementioned pin (14). The jacket is horizontally pivoted, about halfway between the two rods opposite each other (5), as mentioned above ;
c) lifting of the bucket, from its running position, during which it remains immediately above the front axis of the vehicle, until it reaches maximum height while keeping its inclination with respect to a horizontal axis unchanged. Abovementioned lifting is obtained by means of an articulated quadrilateral which comprises :
- a frame made up of a bearing structure (10), firmly fixed to the chassis of the motor vehicle itself ;
- two rockers, which are made up of a pair of booms (9) and the tie rod (12), respectively ;
- a connecting rod made up of the two pairs of plates (7), made integral by a cross member (11), halfway along which the abovementioned rocker (12) is hooked, while the two pairs of plates (7) mentioned above, are each pivoted on a horizontal pin (8) which protrudes externally at the top of each rocker (9).

The upwards rotation of the pair of rockers (9) is obtained by the expansion of a hydraulic jack (13), the jacket of which is horizontally pivoted on the fixed bearing structure (10) while the stem (13a) is hooked in the middle of a cross member which joins the pair of booms (9).
EP82830246A 1981-10-09 1982-10-01 Vehicle for loading, excavating, transportation over short distances and for unloading materials at variable heights Expired EP0077308B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82830246T ATE25722T1 (en) 1981-10-09 1982-10-01 VEHICLE FOR LOADING, DIGING AND TRANSPORTING SHORT DISTANCES AND UNLOADING MATERIALS FROM VARIABLE HEIGHTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT63881 1981-10-09
IT00638/81A IT1145875B (en) 1981-10-09 1981-10-09 VEHICLE SUITABLE FOR SELF-LOADING, EXCAVATION, TRANSPORT ON SHORT DISTANCES AND UNLOADING AT VARIABLE HEIGHT OF INERT MATERIALS

Publications (3)

Publication Number Publication Date
EP0077308A2 EP0077308A2 (en) 1983-04-20
EP0077308A3 EP0077308A3 (en) 1984-01-04
EP0077308B1 true EP0077308B1 (en) 1987-03-04

Family

ID=11295161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830246A Expired EP0077308B1 (en) 1981-10-09 1982-10-01 Vehicle for loading, excavating, transportation over short distances and for unloading materials at variable heights

Country Status (5)

Country Link
EP (1) EP0077308B1 (en)
AT (1) ATE25722T1 (en)
DE (1) DE3275569D1 (en)
ES (1) ES516394A0 (en)
IT (1) IT1145875B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341614C2 (en) * 1983-11-17 1986-08-14 Kramer-Werke GmbH, 7770 Überlingen Shovel loader with a shovel tipping device
GB2169576B (en) * 1985-01-10 1989-08-02 Roughneck Excavators Limited A dumper barrow
DE19853523C1 (en) * 1998-11-20 2000-03-09 Schaeff Karl Gmbh & Co Shovel loader vehicle e.g. for loading high-sided truck, has intermediate arm between load shovel and pivoted arm adjusted in dependence on position of latter for holding load shovel in parallel position

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978124A (en) * 1957-10-11 1961-04-04 Gen Motors Corp Cradle loader
US3370729A (en) * 1966-10-17 1968-02-27 Int Harvester Co Tractor mounted loader linkage
FR2085197B1 (en) * 1970-01-19 1974-09-20 Potain Sa
US3722724A (en) * 1971-04-19 1973-03-27 Case Co J I Load carrying device with improved position control
DE2338426A1 (en) * 1973-07-28 1975-02-13 Frisch Gmbh Transporter scoop loader - is mounted on two parallel actuating arms in front of wheeled vehicle
US3913768A (en) * 1974-03-20 1975-10-21 Caterpillar Tractor Co Large capacity bucket with high-dumping capability

Also Published As

Publication number Publication date
EP0077308A2 (en) 1983-04-20
EP0077308A3 (en) 1984-01-04
DE3275569D1 (en) 1987-04-09
ES8308606A1 (en) 1983-10-01
ES516394A0 (en) 1983-10-01
IT1145875B (en) 1986-11-12
ATE25722T1 (en) 1987-03-15
IT8100638A0 (en) 1981-10-09

Similar Documents

Publication Publication Date Title
FR2471869A1 (en) HANDLING DEVICE FOR FACILITATING CHANGES OF VEHICLE WHEELS, ESPECIALLY AGRICULTURAL TRACTORS OR TRUCKS
FR2514051A1 (en) MECHANICAL SHOVEL WITH HYDRAULIC CONTROL
EP0017593A1 (en) Engine for cleaning ponds, marshes or canals
FR2696070A1 (en) Transportable rotating harrow implement - has main carrying beam able to pivot around longitudinal axis, carried by chassis
FR2774350A1 (en) Mounting frame assembly for coupling a work arm to a work machine e.g. an articulated wheel loader
EP1607363A2 (en) Crane with a telescopic boom
EP0077308B1 (en) Vehicle for loading, excavating, transportation over short distances and for unloading materials at variable heights
FR2472536A1 (en) UTILITY VEHICLE WITH MULTIPLE PURPOSES
EP0100926B1 (en) Material handling vehicle with an orientable arm and incorporated stabiliser frame
EP2370643B1 (en) Earth moving bucket
WO1979001075A1 (en) Polyvalent machine for earthwork and maintenance
LU81658A1 (en) MACHINE FOR LAYING PAVES OR SLABS OF CONCRETE OR OTHER MATERIAL
EP1061034B1 (en) Self-propelled vehicle with a telescopic arm and lifting arm
EP0528005A1 (en) Multifunction construction machine
FR2774407A1 (en) Extended vertical reach lift arm assembly for articulated wheel loader
FR2537965A1 (en) Handling trolley with lifting arms which is mounted on a two-wheeled chassis.
EP0113266B1 (en) Combinative motor vehicle, in particular a light motor lorry equipped with an excavator for rapid usage
FR2461436A1 (en) REMOVABLE DEVICE FOR TRANSPORTING AND OPERATING A TOOL THAT CAN BE MOUNTED ON A TACTOR
FR2705630A1 (en) Vehicle for transporting very bulky loads, equipped with an orientable platform supporting the load
FR2540050A1 (en) MOTOR VEHICLE HAVING A LOADING ELEVATOR PLATE
US3606061A (en) Front end loader type vehicle
EP0256304B1 (en) Soil-working machine
EP0434880A1 (en) Handling device for a load carried by a vehicle
EP0381555A1 (en) Opening buckets of public works machines
EP0750702B1 (en) Digger-loader

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT CH DE FR GB LI

17P Request for examination filed

Effective date: 19840704

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19870304

REF Corresponds to:

Ref document number: 25722

Country of ref document: AT

Date of ref document: 19870315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3275569

Country of ref document: DE

Date of ref document: 19870409

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19871001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19871031

Ref country code: CH

Effective date: 19871031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19880701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881121