WO1995025202A1 - Digger-loader - Google Patents

Digger-loader Download PDF

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Publication number
WO1995025202A1
WO1995025202A1 PCT/FR1995/000301 FR9500301W WO9525202A1 WO 1995025202 A1 WO1995025202 A1 WO 1995025202A1 FR 9500301 W FR9500301 W FR 9500301W WO 9525202 A1 WO9525202 A1 WO 9525202A1
Authority
WO
WIPO (PCT)
Prior art keywords
shovel
bucket
backhoe loader
arm
articulated
Prior art date
Application number
PCT/FR1995/000301
Other languages
French (fr)
Inventor
Claude Blondiaux
Original Assignee
Claude Blondiaux
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 Claude Blondiaux filed Critical Claude Blondiaux
Priority to EP95912312A priority Critical patent/EP0750702B1/en
Priority to DE69514339T priority patent/DE69514339T2/en
Publication of WO1995025202A1 publication Critical patent/WO1995025202A1/en

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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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine

Definitions

  • the invention relates to an improved backhoe loader.
  • a backhoe loader is a motorized machine, comprising on the one hand, a bucket mu hydraulically and capable of loading a more or less significant quantity of materials, in particular of loose material, such as soil, and on the other hand a shovel, positioned at the end of an articulated arm, also hydraulically moved, and intended for digging in particular trenches.
  • the bucket is at the front of this type of machine and the shovel at the rear.
  • the seat and the controls of the machine are likely to undergo a rotation of 180 °, depending on whether you want to load earth or loose material or digging , including trenches.
  • a backhoe loader comprising a bucket and a shovel, said shovel being mounted at the end of an articulated arm, and the bucket and the shovel being driven in particular hydraulically, characterized in that the bucket and the shovel are installed and articulated at the same end of the backhoe loader.
  • the invention consists in positioning the bucket and the shovel either at the front of the backhoe loader or at the rear, so that the loading and digging operation can be carried out almost simultaneously, without changing the driver's position or the orientation of the machine, which the backhoe loaders known to date did not allow to obtain.
  • the shovel can directly empty the material into the bucket, which can then rise to a height sufficient to empty its content, thereby avoiding repri ⁇ se of said material, and therefore generating a appreciable time savings.
  • the actuating arm of the shovel is mounted on a toothed ring or equiva ⁇ slow, with a vertical axis of rotation integral with the chassis, and on the periphery of which meshes vm pinion actuated by a gear motor.
  • the shovel can rotate about 250 °, so as to leave the field free for actuation of the bucket.
  • the base of the arm of the shovel is articulated on the chassis of the machine along an articulation axis oriented horizontally and perpendicular to the longitudinal axis of the machine, so as to allow an increase in the tilting of said arm towards the center of the machine by the increased effect of its lifting, and thus to allow, after having folded the shovel to the maximum against its actuating arm , to give the bucket optimum travel.
  • the heat engine ensuring the progression of the backhoe loader and the hydraulic motor associated with the heat engine, intended to allow the hydraulic activation of the bucket and the shovel are positioned under or at the level of the driver's seat, or more generally behind the control station, so as to free the traditional location of the engine, that is to say at the front of the machine to allow the positioning of the pistons, jacks and hinge pins of the bucket and the arm respectively articulated at the end of which the shovel is mounted.
  • the steering axis of the front steering wheels is offset laterally.
  • a drawbar can be fixed reversibly to the backhoe loader in order to allow its displacement in towed mode, the said drawbar further comprising an articulated connecting rod, the other end of which is intended to be fixed also reversibly in the vicinity of the upper attachment point. of the lifting cylinder of the shovel actuating arm, so as to induce the lifting of the front wheels of the machine when said cylinder is activated.
  • the elevation of the front wheels of the machine results from the support exerted by the bucket on said drawbar, a connecting rod being also reversibly secured to the arms of the bucket and to the chassis of the 'machine, to ensure the fixed retention of the hitch in this position.
  • Figure 1 is a schematic representation of a side view of the backhoe loader according to the invention.
  • Figure 2 is a front three-quarter view of the backhoe loader of Figure 1.
  • Figure 3 is a schematic perspective representation of another embodiment of the invention.
  • FIG. 4 is a schematic plan view, representative of the operation of the machine according to FIG. 3.
  • Figure 5 is a schematic perspective view of another embodiment of the invention.
  • Figure 6 is a schematic perspective representation of a possibility of coupling the machine according to the invention.
  • the backhoe loader according to the invention is traditionally driven by two rear driving wheels (1) (but it can just as well be driven by the four wheels (1, 2), or even by means of tracks), and is driven by two front directional wheels (2), the orientation of which is ensured by means of a steering wheel (3) acting at a directional axis (4), itself acting at the level of the steering shaft connecting the two front wheels (2).
  • the heat engine (5) is located under the seat (6) of the driver, and ensures on the one hand, the progression in translation of the backhoe loader, and on the other hand, the operation of a hydraulic motor intended to allow the operation of the various tools mounted on the backhoe loader.
  • the backhoe loader comprises in the rear position a three-point hitch, represented by the reference (7), at the level of which all traditional tools can be fitted comprising such a hitch system.
  • the front part of the backhoe loader comprises a loader bucket (9), articulated at the end of two arms (10), themselves articulated at their other ends at a hinge pin (11) secured to the chassis (8).
  • This bucket (9) is moved in an upward and downward path by means of a piston-jack assembly (15) also integral with the chassis.
  • the backhoe loader also includes, in the front part, a shovel (12), itself articulated at the end of a folding arm (13), broken down into three parts, namely:
  • the arm (13) also comprises three jacks (16, 17, 18), intended to ensure respectively, the lifting of the pillar (30), of the pendulum (32) relative to the arrow (31), and of the shovel (12 ) relative to the balance (32).
  • the arm (13) is capable of a clearance between the two articulated arms (10) of the bucket (9).
  • the pillar (30) of the articulated arm (13) supporting the shovel (12) is articulated on the chassis (8) relative to a axis articulation (14) horizontal and extending perpendicularly to the longitudinal axis (26) of the machine.
  • This axis (14) is also positioned upstream of the articulation axis (11) of the arms (10) of the bucket (9), and of the location of the jack (15), so as to allow the shovel (12) to directly empty its contents into the bucket (9) if necessary.
  • the pillar (30) and the jack (16) which actuates it are secured at their base to a ring gear (33) with vertical axis of rotation secured to the chassis ( Figure 3), on the periphery of which meshes the pinion (34) of a geared motor (35), advantageously actuated hydraulically.
  • the arm (13) is capable of rotation, for example close to 250 °, suitable for bringing backwards, that is to say towards the control station. , the shovel (12), and thus free the front of the machine to allow work according to a maximum amplitude of the bucket (9).
  • the steering shaft (19 ), mechanically or hydraulically connected by means of traditional connecting rods to the universal joints of the steering axis (20) of the front directional wheels (2), and actuated by the steering wheel (3) is offset laterally, as well as the we can see it in figure 2.
  • a drawbar (21) can be fixed reversibly at the front of the backhoe loader, for example by bolting, or by means of axles - pins assemblies.
  • a drawbar comprises at its free end a hook (22), capable of being fixed on a tow ball, well known for this application.
  • this drawbar comprises an articulated connecting rod (24), capable of being fixed, also reversibly in the vicinity of the upper attachment point of the jack (16) of the arm (13).
  • the elevation of the front wheels of the machine during its transport results from the support exerted by the bucket (9) on said drawbar (21), a connecting rod (25) being also reversibly secured to the arms (10) of the bucket (9) and to the chassis (8) of the machine, in order to guarantee the fixed retention of the coupling in this position .
  • the backhoe loader of the invention provides greater ease of use, by virtue of its structure, especially in the context of work where it is desired to simultaneously carry out the loading and digging operations, but also in places in which the possibilities of evolution are reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

A digger-loader comprising a bucket (9) and a shovel (12) both mounted at the end of hinged arms (10, 13) and hydraulically powered. The bucket and the shovel are mounted on and hinged to the same end of the digger-loader.

Description

TRACTOPELLE BACKHOE LOADER
L'invention concerne un tractopelle perfectionné.The invention relates to an improved backhoe loader.
De manière connue, un tractopelle est un engin motorisé, comportant d'une part, un godet mu par voie hydraulique et susceptible de charger une quantité plus ou moins importante de matériaux, notamment de matériau meuble, tel que de la terre, et d'autre part une pelle, positionnée à l'extrémité d'un bras articulé, également mu hydrauliquement, et destinée à creuser notamment des tranchées.In known manner, a backhoe loader is a motorized machine, comprising on the one hand, a bucket mu hydraulically and capable of loading a more or less significant quantity of materials, in particular of loose material, such as soil, and on the other hand a shovel, positioned at the end of an articulated arm, also hydraulically moved, and intended for digging in particular trenches.
De manière générale, le godet se trouve à l'avant de ce type d'engin et la pelle à l'arrière.Generally, the bucket is at the front of this type of machine and the shovel at the rear.
Afin de permettre l'utilisation de la pelle et du godet, le siège et les commandes de l'engin sont susceptibles de subir une rotation de 180 °, selon que l'on désire procéder au chargement de terre ou de matériaux meubles ou au creusement, notamment de tranchées. En outre, il est souvent requis de faire procéder à l'engin lui-même une telle rotation de 180°, impliquant de nombreuses manoeuvres, notamment lorsqu'il évolue dans des zones de surface réduite, et tout particulièrement dans les rues.In order to allow the use of the shovel and the bucket, the seat and the controls of the machine are likely to undergo a rotation of 180 °, depending on whether you want to load earth or loose material or digging , including trenches. In addition, it is often required to have the machine itself make such a 180 ° rotation, involving numerous maneuvers, especially when it is operating in areas of reduced surface area, and particularly in the streets.
Si lorsque ces deux types de travaux sont bien différenciés, notamment dans le temps, ce genre de tractopelle donne entière satisfaction, il n'en est pas de même dès lors que, comme cela peut être requis pour certains travaux, on souhaite procéder au creusement et à l'enlèvement simultanés de la terre, ou lorsque l'engin doit évoluer dans un espace réduit, insuffisant pour manoeuvrer, et entrainant de fait des pertes de temps conséquentes. L'objet de l'invention permet de s'affranchir de ces inconvénients.If when these two types of work are well differentiated, especially over time, this kind of backhoe loader is entirely satisfactory, it is not the same when, as may be required for certain works, we want to dig and the simultaneous removal of the earth, or when the machine must move in a reduced space, insufficient to maneuver, and resulting in consequent loss of time. The object of the invention overcomes these disadvantages.
Elle propose un tractopelle comportant un godet et une pelle, ladite pelle étant montée à l'extrémité d'un bras articulé, et le godet et la pelle étant mus notamment par voie hydraulique, caractérisé en ce que le godet et la pelle sont implantés et articulés au niveau de la même extrémité du tractopelle.It offers a backhoe loader comprising a bucket and a shovel, said shovel being mounted at the end of an articulated arm, and the bucket and the shovel being driven in particular hydraulically, characterized in that the bucket and the shovel are installed and articulated at the same end of the backhoe loader.
En d'autres termes, l'invention consiste à positionner le godet et la pelle soit au niveau de l'avant du tractopelle, soit à l'arrière, de telle sorte à pouvoir assurer quasiment simultanément l'opération de chargement et de creusement, sans changer la position du conducteur, ni l'orientation de l'engin, ce que les tractopelles connus à ce jour ne permettaient pas d'obtenir.In other words, the invention consists in positioning the bucket and the shovel either at the front of the backhoe loader or at the rear, so that the loading and digging operation can be carried out almost simultaneously, without changing the driver's position or the orientation of the machine, which the backhoe loaders known to date did not allow to obtain.
Selon une caractéristique avantageuse de l'invention, la pelle peut vider directement le matériau dans le godet, qui peut alors s'élever à une hauteur suffisante pour vider son contenu, évitant de la sorte une repri¬ se dudit matériau, et partant engendrant un gain de temps appréciable.According to an advantageous characteristic of the invention, the shovel can directly empty the material into the bucket, which can then rise to a height sufficient to empty its content, thereby avoiding repri¬ se of said material, and therefore generating a appreciable time savings.
Selon une autre caractéristique avantageuse de l'invention, et dans le but d'augmenter l'amplitude du débattement du godet, le bras d'actionnement de la pelle est monté sur une couronne dentée ou équiva¬ lent, d'axe de rotation vertical solidaire du châssis, et sur la périphérie de laquelle engrène vm pignon actionné par un moto-réducteur. De la sorte, la pelle peut pivoter d'environ 250°, de telle sorte à laisser le champ libre à l'actionnement du godet.According to another advantageous characteristic of the invention, and with the aim of increasing the amplitude of the movement of the bucket, the actuating arm of the shovel is mounted on a toothed ring or equiva¬ slow, with a vertical axis of rotation integral with the chassis, and on the periphery of which meshes vm pinion actuated by a gear motor. In this way, the shovel can rotate about 250 °, so as to leave the field free for actuation of the bucket.
Selon une autre caractéristique de l'invention, la base du bras de la pelle est articulée sur le châssis de l'engin selon un axe d'articulation orienté horizontalement et perpendiculairement à l'axe longitudinal de l'engin, de telle sorte à permettre un accroissement du basculement dudit bras en direction du centre de l'engin par l'effet accru de son relevage, et à ainsi permettre, après avoir replié la pelle au maximum contre son bras d'actionnement, de conférer au godet un débattement optimum.According to another characteristic of the invention, the base of the arm of the shovel is articulated on the chassis of the machine along an articulation axis oriented horizontally and perpendicular to the longitudinal axis of the machine, so as to allow an increase in the tilting of said arm towards the center of the machine by the increased effect of its lifting, and thus to allow, after having folded the shovel to the maximum against its actuating arm , to give the bucket optimum travel.
Avantageusement, le moteur thermique assurant la progression du tractopelle et le moteur hydraulique associé au moteur thermique, destiné à permettre l'activation hydraulique du godet et de la pelle, sont positionnés sous ou au niveau du siège du conducteur, ou plus généralement en arrière du poste de commande, de telle sorte à libérer l'emplacement traditionnel du moteur, c'est à dire au niveau de l'avant de l'engin pour permettre le positionnement des pistons, vérins et axes d'articulation respectivement du godet et du bras articulé à l'extrémité duquel est montée la pelle.Advantageously, the heat engine ensuring the progression of the backhoe loader and the hydraulic motor associated with the heat engine, intended to allow the hydraulic activation of the bucket and the shovel, are positioned under or at the level of the driver's seat, or more generally behind the control station, so as to free the traditional location of the engine, that is to say at the front of the machine to allow the positioning of the pistons, jacks and hinge pins of the bucket and the arm respectively articulated at the end of which the shovel is mounted.
Pour la même raison, l'axe de direction des roues avants directrices est décentré latéralement.For the same reason, the steering axis of the front steering wheels is offset laterally.
Avantageusement, un timon peut être fixé réversiblement au tractopelle afin de permettre son déplacement en mode tracté, le dit timon comprenant en outre une bielle articulée, dont l'autre extrémité est destinée à venir se fixer également réversiblement au voisinage du point d'attache supérieur du vérin de relevage du bras d'actionnement de la pelle, de telle sorte à induire le soulèvement des roues avants de l'engin lorsque ledit vérin est activé.Advantageously, a drawbar can be fixed reversibly to the backhoe loader in order to allow its displacement in towed mode, the said drawbar further comprising an articulated connecting rod, the other end of which is intended to be fixed also reversibly in the vicinity of the upper attachment point. of the lifting cylinder of the shovel actuating arm, so as to induce the lifting of the front wheels of the machine when said cylinder is activated.
Selon une autre caractéristique de l'invention, l'élévation des roues avants de l'engin résulte de l'appui exercé par le godet sur ledit timon, une bielle étant en outre solidarisée réversiblement sur les bras du godet et sur le châssis de l'engin, afin de garantir le maintien fixe de l'attelage selon cette position. La manière dont l'invention peut être réalisée et les avantages qui en découlent ressortiront mieux de l'exemple de réalisation qui suit donné à titre indicatif et non limitatif à l'appui des figures annexées.According to another characteristic of the invention, the elevation of the front wheels of the machine results from the support exerted by the bucket on said drawbar, a connecting rod being also reversibly secured to the arms of the bucket and to the chassis of the 'machine, to ensure the fixed retention of the hitch in this position. The manner in which the invention can be implemented and the advantages which ensue therefrom will emerge more clearly from the example of embodiment which follows, given by way of non-limiting illustration in support of the appended figures.
La figure 1 est une représentation schématique d'une vue latérale du tractopelle conforme à l'invention.Figure 1 is a schematic representation of a side view of the backhoe loader according to the invention.
La figure 2 est une vue de trois quarts avant du tractopelle de la figure 1.Figure 2 is a front three-quarter view of the backhoe loader of Figure 1.
La figure 3 est une représentation schématique en perspective d'une autre forme de réalisation de l'invention.Figure 3 is a schematic perspective representation of another embodiment of the invention.
La figure 4 est une vue schématique en plan, représentative du fonctionnement de l'engin selon la figure 3.FIG. 4 is a schematic plan view, representative of the operation of the machine according to FIG. 3.
La figure 5 est une vue schématique en perspective d'une autre forme de réalisation de l'invention. La figure 6 est une représentation schématique en perspective d'une possibilité d'attelage de l'engin conforme à l'invention.Figure 5 is a schematic perspective view of another embodiment of the invention. Figure 6 is a schematic perspective representation of a possibility of coupling the machine according to the invention.
Le tractopelle conforme à l'invention est mû traditionnellement par deux roues arrière motrices (1) (mais il peut tout aussi bien l'être par les quatre roues (1, 2), voire au moyen de chenilles), et est dirigé par deux roues avants directionnelles (2), dont l'orientation est assurée par l'intermédiaire d'un volant (3) agissant au niveau d'un axe directionnel (4), lui-même intervenant au niveau de l'arbre de direction reliant les deux roues avant (2).The backhoe loader according to the invention is traditionally driven by two rear driving wheels (1) (but it can just as well be driven by the four wheels (1, 2), or even by means of tracks), and is driven by two front directional wheels (2), the orientation of which is ensured by means of a steering wheel (3) acting at a directional axis (4), itself acting at the level of the steering shaft connecting the two front wheels (2).
Selon l'invention, le moteur thermique (5) est situé sous le siège (6) du conducteur, et assure d'une part, la progression en translation du tractopelle, et d'autre part, le fonctionnement d'un moteur hydraulique destiné à permettre le fonctionnement des différents outils montés sur le tractopelle. Avantageusement, le tractopelle comprend en position arrière un attelage trois points, représenté par la référence (7), au niveau duquel peuvent être montés tous outils traditionnels comportant un tel système d'attelage.According to the invention, the heat engine (5) is located under the seat (6) of the driver, and ensures on the one hand, the progression in translation of the backhoe loader, and on the other hand, the operation of a hydraulic motor intended to allow the operation of the various tools mounted on the backhoe loader. Advantageously, the backhoe loader comprises in the rear position a three-point hitch, represented by the reference (7), at the level of which all traditional tools can be fitted comprising such a hitch system.
Selon l'invention, la partie avant du tractopelle comporte un godet chargeur (9), articulé à l'extrémité de deux bras (10), eux-mêmes articulés à leurs autres extrémités au niveau d'un axe d'articulation (11) solidaire du châssis (8). Ce godet (9) est mû en trajectoire ascendante et descendante au moyen d'un ensemble piston-vérin (15) également solidaire du châssisAccording to the invention, the front part of the backhoe loader comprises a loader bucket (9), articulated at the end of two arms (10), themselves articulated at their other ends at a hinge pin (11) secured to the chassis (8). This bucket (9) is moved in an upward and downward path by means of a piston-jack assembly (15) also integral with the chassis.
(8), et agissant au niveau d'un organe de liaison (23), solidarisé aux deux bras (10) à proximité immédiate de l'axe d'articulation (11) desdits bras.(8), and acting at a connecting member (23), secured to the two arms (10) in the immediate vicinity of the articulation axis (11) of said arms.
Parallèlement, le tractopelle comporte, également en partie avant, une pelle (12), elle-même articulée à l'extrémité d'un bras repliable (13), se décomposant en trois parties, à savoir :In parallel, the backhoe loader also includes, in the front part, a shovel (12), itself articulated at the end of a folding arm (13), broken down into three parts, namely:
- un pilier (30) relié au châssis (8) ;- a pillar (30) connected to the frame (8);
- une flèche (31) fixée à l'extrémité supérieure du pilier (30) ;- an arrow (31) fixed to the upper end of the pillar (30);
- et un balancier (32), articulée à l'autre extrémité de la flèche (31), et portant la pelle (12).- And a pendulum (32), articulated at the other end of the boom (31), and carrying the shovel (12).
Le bras (13) comporte également trois vérins (16, 17, 18), destinés à assurer respectivement, le relevage du pilier (30), du balancier (32) par rapport à la flèche (31), et de la pelle (12) par rapport au balancier (32).The arm (13) also comprises three jacks (16, 17, 18), intended to ensure respectively, the lifting of the pillar (30), of the pendulum (32) relative to the arrow (31), and of the shovel (12 ) relative to the balance (32).
Par ailleurs, le bras (13) est susceptible d'un débattement entre les deux bras articulés (10) du godet (9).Furthermore, the arm (13) is capable of a clearance between the two articulated arms (10) of the bucket (9).
Dans une première forme de réalisation de l'invention, par exemple représentée sur les figures 1 et 2, le pilier (30) du bras articulé (13) supportant la pelle (12) est articulé sur le châssis (8) par rapport à un axe d'articulation (14) horizontale et s'étendant perpendiculairement par rapport à l'axe longitudinal (26) de l'engin. Cet axe (14) est en outre positionné en amont de l'axe d'articulation (11) des bras (10) du godet (9), et du lieu d'implantation du vérin (15), de telle sorte à permettre à la pelle (12) de vider directement son contenu dans le godet (9) le cas échéant. De la sorte, le déplacement relatif du godet (9) et de la pelle (12) peut s'effectuer sans entrave ni gêne, permettant ainsi un travail simultané de ces deux outils, et partant, pour certaines applications, générer un gain de temps conséquent, dans la mesure où le conducteur n'a pas à effectuer toute une série de manoeuvres pour alternativement utiliser le godet, puis la pelle.In a first embodiment of the invention, for example shown in Figures 1 and 2, the pillar (30) of the articulated arm (13) supporting the shovel (12) is articulated on the chassis (8) relative to a axis articulation (14) horizontal and extending perpendicularly to the longitudinal axis (26) of the machine. This axis (14) is also positioned upstream of the articulation axis (11) of the arms (10) of the bucket (9), and of the location of the jack (15), so as to allow the shovel (12) to directly empty its contents into the bucket (9) if necessary. In this way, the relative movement of the bucket (9) and the shovel (12) can be carried out without hindrance or discomfort, thus allowing simultaneous work of these two tools, and therefore, for certain applications, generating time savings. Consequently, insofar as the driver does not have to carry out a whole series of maneuvers to alternately use the bucket, then the shovel.
Dans un souci d'optimisation du débattement du godet dans le plan vertical, on accroit la possibilité de basculement du pilier (30) du bras articulé (13) en direction du centre de l'engin, ce basculement extrême étant obtenu par relevage maximum du vérin (16) correspondant. On aboutit de la sorte à replier la pelle (12) au maximum contre le bras (13), et ainsi libérer l'accès pour le godet à un débattement vertical optimum (figure 5).In order to optimize the displacement of the bucket in the vertical plane, the possibility of tilting the pillar (30) of the articulated arm (13) in the direction of the center of the machine is increased, this extreme tilting being obtained by maximum lifting of the corresponding cylinder (16). This results in folding the shovel (12) as far as possible against the arm (13), and thus freeing access for the bucket to optimum vertical travel (Figure 5).
Selon une autre forme de réalisation de l'invention, et toujours dans le but d'optimiser le débattement vertical du godet (12), le pilier (30) et le vérin (16) qui l'actionne sont solidarisés à leur base à une couronne dentée (33) à axe de rotation vertical solidarisé au châssis (figure 3), sur la périphérie de laquelle vient engrener le pignon (34) d'un motoréducteur (35), avantageusement actionné par voie hydraulique. Ainsi, et comme on peut le voir sur la figure 4, le bras (13) est susceptible d'une rotation, par exemple voisine de 250°, propre à amener vers l'arrière, c'est à dire vers le poste de commande, la pelle (12), et ainsi libérer l'avant de l'engin pour permettre le travail selon une amplitude maximum du godet (9). Afin en outre de libérer l'espace nécessaire au débattement, d'une part des bras d'articulation et de fonctionnement (10) du godet (9) et (13) de la pelle (12), l'arbre de direction (19), relié mécaniquement ou hydrauli- quement au moyen de bielles traditionnelles aux cardans de l'axe de direc- tion (20) des roues avants directionnelles (2), et actionné par le volant (3) est décalé latéralement, ainsi que l'on peut l'observer sur la figure 2.According to another embodiment of the invention, and always with the aim of optimizing the vertical clearance of the bucket (12), the pillar (30) and the jack (16) which actuates it are secured at their base to a ring gear (33) with vertical axis of rotation secured to the chassis (Figure 3), on the periphery of which meshes the pinion (34) of a geared motor (35), advantageously actuated hydraulically. Thus, and as can be seen in FIG. 4, the arm (13) is capable of rotation, for example close to 250 °, suitable for bringing backwards, that is to say towards the control station. , the shovel (12), and thus free the front of the machine to allow work according to a maximum amplitude of the bucket (9). In addition to freeing up the space necessary for the movement, on the one hand of the articulation and operating arms (10) of the bucket (9) and (13) of the shovel (12), the steering shaft (19 ), mechanically or hydraulically connected by means of traditional connecting rods to the universal joints of the steering axis (20) of the front directional wheels (2), and actuated by the steering wheel (3) is offset laterally, as well as the we can see it in figure 2.
Selon une caractéristique avantageuse de l'invention, un timon (21) peut être fixé réversiblement à l'avant du tractopelle, par exemple par boulonnage, ou au moyen d'ensembles axes - goupilles. De manière connue, un tel timon comporte à son extrémité libre un crochet (22), susceptible de venir se fixer sur une boule de remorquage, bien connue pour cette application. En outre, ce timon comporte une bielle articulée (24), susceptible de se fixer, également réversiblement au voisinage du point d'attache supérieur du vérin (16) du bras (13).According to an advantageous characteristic of the invention, a drawbar (21) can be fixed reversibly at the front of the backhoe loader, for example by bolting, or by means of axles - pins assemblies. In known manner, such a drawbar comprises at its free end a hook (22), capable of being fixed on a tow ball, well known for this application. In addition, this drawbar comprises an articulated connecting rod (24), capable of being fixed, also reversibly in the vicinity of the upper attachment point of the jack (16) of the arm (13).
De la sorte, une fois le timon (21) en place sur le tractopelle, avec la bielle (24) également fixée comme précisé précédemment, et attelé à une boule de remorquage, le conducteur du tractopelle fait porter l'extrémité de la pelle (12) sur le timon (21), puis en agissant au niveau du vérin (16), provoque le soulèvement des roues avant directrices (2) par réaction. Ainsi, seules les roues arrières portent, et le tractopelle peut être très aisément transporté sur son lieu de travail.In this way, once the drawbar (21) in place on the backhoe loader, with the connecting rod (24) also fixed as specified above, and coupled to a tow ball, the driver of the backhoe loader carries the end of the shovel ( 12) on the drawbar (21), then acting at the level of the jack (16), causes the lifting of the front steering wheels (2) by reaction. Thus, only the rear wheels carry, and the backhoe can be very easily transported to his workplace.
Selon une autre forme de réalisation de l'invention, plus particulièrement décrite en liaison avec la figure 6, l'élévation des roues avants de l'engin lors de son transpor résulte de l'appui exercé par le godet (9) sur ledit timon (21), une bielle (25) étant en outre solidarisée réversiblement sur les bras (10) du godet (9) et sur le châssis (8) de l'engin, afin de garantir le maintien fixe de l'attelage selon cette position. Ainsi, le tractopelle de l'invention procure-t-il une plus grande facilité d'utilisation, de par sa structure, notamment dans le cadre de travaux où l'on souhaite mener simultanément les opérations de chargement et de creusement, mais également en des lieux dans lesquels les possibilités d'évolution sont réduites. According to another embodiment of the invention, more particularly described in connection with FIG. 6, the elevation of the front wheels of the machine during its transport results from the support exerted by the bucket (9) on said drawbar (21), a connecting rod (25) being also reversibly secured to the arms (10) of the bucket (9) and to the chassis (8) of the machine, in order to guarantee the fixed retention of the coupling in this position . Thus, the backhoe loader of the invention provides greater ease of use, by virtue of its structure, especially in the context of work where it is desired to simultaneously carry out the loading and digging operations, but also in places in which the possibilities of evolution are reduced.

Claims

REVENDICATIONS
1/ Tractopelle comportant un godet (9) et une pelle (12), le godet et la pelle étant montés à l'extrémité de bras articulé (10, 13), et le godet et la pelle étant mus notamment par voie hydraulique, caractérisé en ce que le godet et la pelle sont implantés et articulés au niveau de la même extrémité du tractopelle.1 / Backhoe loader comprising a bucket (9) and a shovel (12), the bucket and the shovel being mounted at the end of the articulated arm (10, 13), and the bucket and the shovel being driven in particular hydraulically, characterized in that the bucket and the shovel are located and articulated at the same end of the backhoe loader.
2/ Tractopelle selon la revendication 1, caractérisé en ce que le godet (9) et la pelle (12) sont implantés et articulés au voisinage de l'extrémité antérieure du châssis (8) du tractopelle.2 / backhoe loader according to claim 1, characterized in that the bucket (9) and the shovel (12) are located and articulated in the vicinity of the front end of the chassis (8) of the backhoe loader.
3/ Tractopelle selon l'une des revendications 1 et 2, caractérisé en ce que le bras (13) d'actionnement de la pelle (12) est monté sur une couronne dentée ou équivalent (33), d'axe de rotation vertical solidaire du châssis (8), et sur la périphérie de laquelle engrène un pignon (34) actionné par un moto-réducteur (35), de telle sorte à permettre le pivotement de la pelle (12).3 / Backhoe loader according to one of claims 1 and 2, characterized in that the arm (13) for actuating the shovel (12) is mounted on a ring gear or equivalent (33), with a vertical axis of rotation integral of the chassis (8), and on the periphery of which meshes a pinion (34) actuated by a geared motor (35), so as to allow the pivoting of the shovel (12).
4/ Tractopelle selon l'une des revendications 1 et 2, caractérisé en ce que le pilier (30) du bras (13) d'actionnement de la pelle (12) est articulé sur le châssis (8) de l'engin, selon un axe d'articulation (14) orienté horizontalement et perpendiculairement à l'axe longitudinal (26) de l'engin, de telle sorte à permettre un accroissement du basculement dudit bras en direction du centre de l'engin par l'effet accru de son relevage, et à ainsi permettre, après avoir replié la pelle (12) au maximum contre son bras d'actionnement (13), de conférer au godet (9) un débattement optimum. 5/ Tractopelle selon l'une des revendications 1 à 4, caractérisé en ce que la pelle (12) peut vider son contenu directement dans le godet (9).4 / Backhoe loader according to one of claims 1 and 2, characterized in that the pillar (30) of the arm (13) for actuating the shovel (12) is articulated on the chassis (8) of the machine, according to a hinge pin (14) oriented horizontally and perpendicular to the longitudinal axis (26) of the machine, so as to allow an increase in the tilting of said arm towards the center of the machine by the increased effect of its lifting, and thus allow, after having folded the shovel (12) to the maximum against its actuating arm (13), to give the bucket (9) optimum travel. 5 / backhoe loader according to one of claims 1 to 4, characterized in that the shovel (12) can empty its content directly into the bucket (9).
6/ Tractopelle selon l'une des revendications 1 à 5, caractérisé en ce que le moteur thermique (5) assurant la progression du tractopelle et le moteur hydraulique associé au moteur thermique, destiné à permettre l'activation hydraulique des bras d'articulation (10, 13) du godet (9) et de la pelle (12), sont positionnés sous ou au niveau du siège (6) du conducteur, ou en arrière par rapport à celui-ci.6 / backhoe loader according to one of claims 1 to 5, characterized in that the heat engine (5) ensuring the progression of the backhoe loader and the hydraulic motor associated with the heat engine, intended to allow the hydraulic activation of the articulation arms ( 10, 13) of the bucket (9) and the shovel (12), are positioned under or at the seat (6) of the driver, or behind it.
7/ Tractopelle selon l'une des revendications 1 à 6, caractérisé en ce que l'arbre de direction (4) actionnant l'axe de direction (20) des roues avants directrices (2) est décentré latéralement.7 / Backhoe loader according to one of claims 1 to 6, characterized in that the steering shaft (4) actuating the steering axis (20) of the front steering wheels (2) is offset laterally.
8/ Tractopelle selon l'une des revendications 1 à 7, caractérisé en ce qu'un timon (21) est fixable réversiblement au tractopelle, le dit timon (21) comprenant en outre une bielle articulée (24), dont l'autre extrémité est destinée à venir se fixer également réversiblement au voisinage du point d'attache supérieur du vérin (16) du pilier (50) du bras (13) d'actionnement de la pelle (12), de telle sorte à induire le soulèvement des roues avants (2) lorsque ledit vérin est activé.8 / backhoe loader according to one of claims 1 to 7, characterized in that a drawbar (21) is reversibly fixed to the backhoe loader, the said drawbar (21) further comprising an articulated connecting rod (24), the other end of which is intended to be fixed also reversibly in the vicinity of the upper attachment point of the jack (16) of the pillar (50) of the arm (13) of actuation of the shovel (12), so as to induce the lifting of the wheels fronts (2) when said cylinder is activated.
9/ Tractopelle selon l'une des revendications 1 à 8, caractérisé en ce qu'un timon (21) est fixable réversiblement au tractopelle, ledit timon (21) comprenant en outre une bielle (25) solidarisée réversiblement sur les bras (10) du godet (9) et sur le châssis (8) de l'engin, afin de garantir le maintien fixe de l'attelage selon cette position, ledit godet étant appliqué sur le timon (21) afin d'induire le soulèvement des roues avants (2). 9 / backhoe loader according to one of claims 1 to 8, characterized in that a drawbar (21) is reversibly fixed to the backhoe loader, said drawbar (21) further comprising a connecting rod (25) reversibly secured to the arms (10) of the bucket (9) and on the chassis (8) of the machine, in order to guarantee the fixed retention of the coupling in this position, said bucket being applied to the drawbar (21) in order to induce the lifting of the front wheels (2).
PCT/FR1995/000301 1994-03-16 1995-03-14 Digger-loader WO1995025202A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP95912312A EP0750702B1 (en) 1994-03-16 1995-03-14 Digger-loader
DE69514339T DE69514339T2 (en) 1994-03-16 1995-03-14 EXCAVATOR LOADER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR94/03307 1994-03-16
FR9403307A FR2717515B1 (en) 1994-03-16 1994-03-16 Backhoe loader.

Publications (1)

Publication Number Publication Date
WO1995025202A1 true WO1995025202A1 (en) 1995-09-21

Family

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Application Number Title Priority Date Filing Date
PCT/FR1995/000301 WO1995025202A1 (en) 1994-03-16 1995-03-14 Digger-loader

Country Status (5)

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EP (1) EP0750702B1 (en)
DE (1) DE69514339T2 (en)
ES (1) ES2143618T3 (en)
FR (1) FR2717515B1 (en)
WO (1) WO1995025202A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101413279B (en) * 2008-11-29 2011-06-08 湖南山河智能机械股份有限公司 Electromechanical integrated digging loader and control method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807586A (en) * 1971-06-07 1974-04-30 Channel Construction Inc Material handling apparatus
EP0151101A2 (en) * 1984-01-31 1985-08-07 Willy Bergesen Tractor-mounted excavator assembly
FR2595107A1 (en) * 1986-02-28 1987-09-04 Kubota Ltd A COMPLETE PIVOT LIFTING VEHICLE WITH REDUCED RADIUS TO FACILITATE OPERATIONS IN A WEAK SITE
DE3932555A1 (en) * 1989-09-29 1991-04-11 Schaeff Karl Gmbh & Co Combined excavator and loader - has excavator mounted on driver's cab so that it does not obstruct driver's view
WO1993006306A1 (en) * 1991-09-25 1993-04-01 STRUNK, Carolyn, E. Apparatus to prepare a road surface

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807586A (en) * 1971-06-07 1974-04-30 Channel Construction Inc Material handling apparatus
EP0151101A2 (en) * 1984-01-31 1985-08-07 Willy Bergesen Tractor-mounted excavator assembly
FR2595107A1 (en) * 1986-02-28 1987-09-04 Kubota Ltd A COMPLETE PIVOT LIFTING VEHICLE WITH REDUCED RADIUS TO FACILITATE OPERATIONS IN A WEAK SITE
DE3932555A1 (en) * 1989-09-29 1991-04-11 Schaeff Karl Gmbh & Co Combined excavator and loader - has excavator mounted on driver's cab so that it does not obstruct driver's view
WO1993006306A1 (en) * 1991-09-25 1993-04-01 STRUNK, Carolyn, E. Apparatus to prepare a road surface

Also Published As

Publication number Publication date
FR2717515B1 (en) 1996-04-19
FR2717515A1 (en) 1995-09-22
ES2143618T3 (en) 2000-05-16
EP0750702A1 (en) 1997-01-02
DE69514339T2 (en) 2000-08-24
DE69514339D1 (en) 2000-02-10
EP0750702B1 (en) 2000-01-05

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