EP0378485A1 - Device for connecting cutting drums to an apparatus used for digging trenches in the soil - Google Patents

Device for connecting cutting drums to an apparatus used for digging trenches in the soil Download PDF

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Publication number
EP0378485A1
EP0378485A1 EP90400091A EP90400091A EP0378485A1 EP 0378485 A1 EP0378485 A1 EP 0378485A1 EP 90400091 A EP90400091 A EP 90400091A EP 90400091 A EP90400091 A EP 90400091A EP 0378485 A1 EP0378485 A1 EP 0378485A1
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EP
European Patent Office
Prior art keywords
plate
milling drum
milling
polygonal
drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90400091A
Other languages
German (de)
French (fr)
Other versions
EP0378485B1 (en
Inventor
Jean-Claude Detilleux
Gilbert Ferré
Philippe Lefort
André Ponsada
Jean-Pierre Schreiber
Jean-Bernard Wittner
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.)
Soletanche SA
Original Assignee
Soletanche SA
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 Soletanche SA filed Critical Soletanche SA
Priority to AT90400091T priority Critical patent/ATE96871T1/en
Publication of EP0378485A1 publication Critical patent/EP0378485A1/en
Application granted granted Critical
Publication of EP0378485B1 publication Critical patent/EP0378485B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y10T403/7051—Wedging or camming
    • Y10T403/7052—Engaged by axial movement
    • Y10T403/7056—Threaded actuator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7098—Non-circular rod section is joint component

Definitions

  • the present invention relates to a device for fixing the milling drums to an apparatus intended for digging trenches in the ground.
  • milling devices are required to work in soils of very variable natures, such as alluvial soils which offer only a low resistance to milling or even compact rocks which are extremely hard.
  • the milling apparatus must therefore be able to be adapted to the different working conditions, for example by varying its speed of rotation or the torque exerted on the cutters, but also by using different cutters, for example by their width, or by the nature and the number of their tools.
  • the present invention relates to a device which makes it possible to effect this change in a simple and rapid manner while allowing extremely reliable securing of the milling drum to its motor device.
  • the subject of the present invention is a device for fixing the milling drums to an apparatus intended for digging trenches in the ground, characterized in that the driving device comprises a turntable arranged perpendicularly to its axis and to the end of that -this, plate which has on its periphery a convex polygonal shape, while the milling drum is provided with a flange comprising a central recess of concave polygonal shape corresponding to the convex polygonal shape of the plate of the motor device and of slightly larger dimensions , holding organs joining the milling drum to said plate so that the rotation of the milling drum by the plate is effected by means of the aforementioned polygonal surfaces which come to engage one against the other.
  • the flange of the milling drum is connected to the plate of the motor device by bolts arranged between the tops of the polygonal surfaces which ensure the drive of the milling drum.
  • the periphery of the plate of the motor device comprises a convex frustoconical surface which engages in a concave frustoconical surface of corresponding shape integral with the milling drum to ensure the rigorous positioning of the milling drum relative to the motor device.
  • the positioning and in particular the coaxiality of the milling drum with respect to the axis of the motor device is ensured by the two frustoconical surfaces which engage one on the other.
  • connection of the plate to the motor device with the flange of the milling drum is then ensured by bolts under conditions such that they do not take a significant part in the transmission of the milling torque, for example by the fact that they pass through a orifice whose dimensions are sufficiently large.
  • the polygonal surfaces are hexagons which have the advantage of effectively fulfilling the torque transmission function while leaving enough room to place between their vertices the six bolts which secure the drum of milling on the motor device plate.
  • non-point polygonal surfaces with generatrices parallel to the axis of the drum, but by giving them a shape of trunks of pyramids, which allows them to simultaneously ensure the positioning function and that of rotary drive, in which case the frustoconical surfaces become useless.
  • the drive device supports an end ring 1 which is integral with the vertical core which supports the assembly constituted by the drive device and the milling drums.
  • This end ring 1 supports a bearing 2 which maintains an internal ring 3, to which a plate 4 is fixed by bolts 5
  • the crown 3 has an internal toothing which engages in the internal toothing of a wheel 6 which also includes a central orifice provided with an internal toothing which engages in the external toothing of the shaft 7 of the drive device.
  • the motor device rotates the plate 4 which is positioned by the bearing 2, and this while ensuring a certain play in the positioning of the shaft 7 relative to the plate 4.
  • the shaft 7 can drive the crown 3 and the plate 4 via intermediate pinions or a planetary gear.
  • FIG. 2 shows the plate 4 on which the milling drum 8 is fixed, in accordance with the invention.
  • the plate 4 has on its periphery an external polygonal surface 9 whose generatrices are parallel to the axis of the drive device.
  • the portion 8a of the milling drum 8 has at its inner periphery a polygonal surface 10 of shape corresponding to that of the polygonal surface 9, but of very slightly larger dimensions so that the milling drum 8, 8a, can be easily engaged against the plate 4.
  • the portion 8a of the milling drum 8 is secured to the plate 4 by bolts 11 which are screwed into threaded holes of the plate 4 and which traverse the portion 8a of the milling drum 8 via orifices whose dimensions are sufficient to ensure that the drive torque is transmitted by the sides of the polygonal surfaces 9 and 10 when these sides come into contact with one another and not by the shearing of the bolts 11.
  • the periphery of the plate 4 has a frustoconical surface 12 whose axis corresponds to the axis of rotation of the plate 4, the apex of the cone of this surface being located towards the outside of the milling apparatus.
  • the milling drum 8 has, for its part, a concave frustoconical surface of corresponding shape 13 which, by coming to bear against the frustoconical surface 12, ensures an exact positioning of the milling drum 8 on the motor device.
  • the milling drum 8 In order to mount the milling drum 8, the latter is engaged around the motor device by bringing the concave frustoconical surface 13 into contact with the convex frustoconical surface 12 by arranging that the orifices of the portion 8a of the drum are in a position such as to enable the screw bolts 11 which ensure the provisional retention of the drum 8 of the driving device.
  • the fixing and dismantling of the milling drums is carried out in a particularly simple manner, which makes it possible, without loss of time, to change them each time the characteristics of the ground so require. .
  • the surfaces 9 and 10 ensure both the axial positioning of the drum 8 and its drive in rotation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

L'invention est relative à un dispositif de fixation des tambours de fraisage sur un outil de travail destiné à creuser des tranchées dans le sol. Le dispositif moteur comporte un plateau tournant (4) disposé perpendiculairement à son axe et à l'extrémité de celui-ci, plateau qui présente sur sa périphérie une forme polygonale convexe (9) alors que le tambour de fraisage (8) est muni d'une partie (8a) comportant un évidement central de forme polygonale concave (10) correspondant à la forme polygonale convexe (9) du plateau (4) et de dimensions légèrement supérieures, des organes de maintien (11) réunissant le tambour de fraisage (8) audit plateau (4) de manière telle que l'entraînement en rotation du tambour de fraisage (8) par le plateau (4) s'effectue par l'intermédiaire des surfaces polygonales précitées (9,10) qui viennent s'engager l'une contre l'autre.The invention relates to a device for fixing the milling drums to a working tool intended to dig trenches in the ground. The drive device comprises a turntable (4) arranged perpendicular to its axis and at the end thereof, a plate which has on its periphery a convex polygonal shape (9) while the milling drum (8) is provided with 'a part (8a) comprising a central recess of concave polygonal shape (10) corresponding to the convex polygonal shape (9) of the plate (4) and of slightly larger dimensions, holding members (11) joining the milling drum ( 8) to said plate (4) so that the rotation of the milling drum (8) by the plate (4) is effected by means of the aforementioned polygonal surfaces (9,10) which engage one against the other.

Description

La présente invention est relative à un dispositif pour la fixation des tambours de fraisage sur un appareil destiné à creuser des tranchées dans le sol.The present invention relates to a device for fixing the milling drums to an apparatus intended for digging trenches in the ground.

On connait déjà de tels appareils qui permettent de creuser dans le sol des orifices de grandes profondeurs remplis de boue bentonitique et qui comportent à leur partie inférieure deux ensembles comportant chacun une paire de demi-tambours situés de part et d'autre d'une âme support verticale à laquelle est assujetti l'ensemble moteur.We already know of such devices which make it possible to dig into the ground orifices of great depths filled with bentonite mud and which comprise at their lower part two assemblies each comprising a pair of half-drums situated on either side of a core vertical support to which the engine assembly is attached.

Ces appareils de fraisage sont amenés à travailler dans des sols de natures très variables, tels que des terrains alluvionnaires qui n'offrent qu'une faible résistance au fraisage ou encore des roches compactes qui sont extrêmement dures.These milling devices are required to work in soils of very variable natures, such as alluvial soils which offer only a low resistance to milling or even compact rocks which are extremely hard.

L'appareil de fraisage doit donc pouvoir être adapté aux différentes conditions de travail en faisant par exemple varier sa vitesse de rotation ou le couple exercé sur les fraises mais aussi en utilisant des fraises différentes, par exemple par leur largeur, ou par la nature et le nombre de leurs outils.The milling apparatus must therefore be able to be adapted to the different working conditions, for example by varying its speed of rotation or the torque exerted on the cutters, but also by using different cutters, for example by their width, or by the nature and the number of their tools.

Dans les appareils de fraisage connus jusqu'à ce jour, le changement des tambours de fraisage constitue une opération longue et difficile.In milling devices known to date, changing the milling drums is a long and difficult operation.

La présente invention est relative à un dispositif qui permet d'effectuer ce changement d'une manière simple et rapide tout en permettant un assujettissement extrêmement fiable du tambour de fraisage sur son dispositif moteur.The present invention relates to a device which makes it possible to effect this change in a simple and rapid manner while allowing extremely reliable securing of the milling drum to its motor device.

La présente invention a pour objet un dispositif de fixation des tambours de fraisage sur un appareil destiné à creuser des tranchées dans le sol, caractérisé par le fait que le dispositif moteur comporte un plateau tournant disposé perpendiculairement à son axe et à l'extrémité de celui-ci, plateau qui présente sur sa périphérie une forme polygonale convexe, alors que le tambour de fraisage est muni d'une collerette comportant un évidement central de forme polygonale concave correspondant à la forme polygonale convexe du plateau du dispositif moteur et de dimensions légèrement supérieures, des organes de maintien réunissant le tambour de fraisage audit plateau de manière telle que l'entraînement en rotation du tambour de fraisage par le plateau s'effectue par l'intermédiaire des surfaces polygonales précitées qui viennent s'engager l'une contre l'autre.The subject of the present invention is a device for fixing the milling drums to an apparatus intended for digging trenches in the ground, characterized in that the driving device comprises a turntable arranged perpendicularly to its axis and to the end of that -this, plate which has on its periphery a convex polygonal shape, while the milling drum is provided with a flange comprising a central recess of concave polygonal shape corresponding to the convex polygonal shape of the plate of the motor device and of slightly larger dimensions , holding organs joining the milling drum to said plate so that the rotation of the milling drum by the plate is effected by means of the aforementioned polygonal surfaces which come to engage one against the other.

Dans un mode de réalisation préféré de l'invention, la collerette du tambour de fraisage est reliée au plateau du dispositif moteur par des boulons disposés entre les sommets des surfaces polygonales qui assurent l'entraînement du tambour de fraisage.In a preferred embodiment of the invention, the flange of the milling drum is connected to the plate of the motor device by bolts arranged between the tops of the polygonal surfaces which ensure the drive of the milling drum.

Dans un mode de réalisation perfectionné de l'invention la périphérie du plateau du dispositif moteur comporte une surface tronconique convexe qui s'engage dans une surface tronconique concave de forme correspondante solidaire du tambour de fraisage pour assurer le positionnement rigoureux du tambour de fraisage par rapport au dispositif moteur.In an improved embodiment of the invention the periphery of the plate of the motor device comprises a convex frustoconical surface which engages in a concave frustoconical surface of corresponding shape integral with the milling drum to ensure the rigorous positioning of the milling drum relative to the motor device.

Grâce à cette caractéristique l'on obtient une dissociation complète des trois fonctions qu'il est nécessaire d'assurer pour la fixation du tambour de fraisage sur l'ensemble moteur.Thanks to this characteristic, a complete dissociation of the three functions is obtained, which it is necessary to provide for fixing the milling drum to the motor assembly.

Tout d'abord le positionnement et notamment la coaxialité du tambour de fraisage par rapport à l'axe du dispositif moteur est assuré par les deux surfaces tronconiques qui s'engagent l'une sur l'autre.First of all, the positioning and in particular the coaxiality of the milling drum with respect to the axis of the motor device is ensured by the two frustoconical surfaces which engage one on the other.

La réunion du plateau au dispositif moteur à la collerette du tambour de fraisage est ensuite assurée par des boulons dans des conditions telles qu'ils ne prennent pas sensiblement part à la transmission du couple de fraisage, par exemple par le fait qu'ils traversent un orifice dont les dimensions sont suffisamment larges.The connection of the plate to the motor device with the flange of the milling drum is then ensured by bolts under conditions such that they do not take a significant part in the transmission of the milling torque, for example by the fact that they pass through a orifice whose dimensions are sufficiently large.

Enfin, la transmission du couple de fraisage est assurée par la coopération des surfaces polygonales précitées.Finally, the transmission of the milling torque is ensured by the cooperation of the aforementioned polygonal surfaces.

Selon un mode de réalisation préféré de l'invention, les surfaces polygonales sont des hexagones qui présentent l'avantage de remplir efficacement la fonction de transmission du couple tout en laissant suffisamment de place pour placer entre leurs sommets les six boulons qui assujettissent le tambour de fraisage sur la plaque du dispositif moteur.According to a preferred embodiment of the invention, the polygonal surfaces are hexagons which have the advantage of effectively fulfilling the torque transmission function while leaving enough room to place between their vertices the six bolts which secure the drum of milling on the motor device plate.

Dans une variante, on peut selon l'invention réaliser les surfaces polygonales non point avec des génératrices parallèles à l'axe du tambour, mais en leur donnant une forme de troncs de pyramides, ce qui leur permet d'assurer simultanément la fonction de positionnement et celle d'entraînement en rotation, auquel cas les surfaces tronconiques deviennent inutiles.In a variant, it is possible according to the invention to produce the non-point polygonal surfaces with generatrices parallel to the axis of the drum, but by giving them a shape of trunks of pyramids, which allows them to simultaneously ensure the positioning function and that of rotary drive, in which case the frustoconical surfaces become useless.

Dans le but de mieux faire comprendre l'invention, on va en décrire maintenant à titre d'illustration et sans aucun caractère limitatif, un mode de réalisation pris comme exemple et représenté sur le dessin.In order to better understand the invention, we will now describe by way of illustration and without any limitation, an embodiment taken as an example and shown in the drawing.

Sur ce dessin :

  • - la figure 1 est une vue schématique en coupe selon I-I de la figure 2 de l'extrémité d'un dispositif moteur munie du dispositif de fixation du tambour de fraisage selon l'invention, et
  • - la figure 2 est une vue schématique de gauche de la figure 1.
On this drawing :
  • FIG. 1 is a schematic sectional view along II of FIG. 2 of the end of a motor device provided with the device for fixing the milling drum according to the invention, and
  • - Figure 2 is a schematic left view of Figure 1.

Dans le mode de réalisation représenté sur le dessin, le dispositif moteur supporte une couronne d'extrémité 1 qui est solidaire de l'âme verticale qui supporte l'ensemble constitué par le dispositif moteur et les tambours de fraisage. Cette couronne d'extrémité 1 supporte un roulement 2 qui maintient une couronne interne 3, à laquelle un plateau 4 est fixé par des boulons 5In the embodiment shown in the drawing, the drive device supports an end ring 1 which is integral with the vertical core which supports the assembly constituted by the drive device and the milling drums. This end ring 1 supports a bearing 2 which maintains an internal ring 3, to which a plate 4 is fixed by bolts 5

La couronne 3 comporte une denture interne qui s'engage dans la denture interne d'une roue 6 laquelle comporte également un orifice central muni d'une denture interne qui s'engage dans la denture externe de l'arbre 7 du dispositif moteur.The crown 3 has an internal toothing which engages in the internal toothing of a wheel 6 which also includes a central orifice provided with an internal toothing which engages in the external toothing of the shaft 7 of the drive device.

Grâce à ce montage, le dispositif moteur entraîne en rotation le plateau 4 qui est positionné par le roulement 2, et ceci tout en assurant un certain jeu dans le positionnement de l'arbre 7 par rapport au plateau 4.Thanks to this arrangement, the motor device rotates the plate 4 which is positioned by the bearing 2, and this while ensuring a certain play in the positioning of the shaft 7 relative to the plate 4.

Dans une variante, l'arbre 7 peut entraîner la couronne 3 et le plateau 4 par l'intermédiaire de pignons intermédiaires ou d'un train épicycloïdal.In a variant, the shaft 7 can drive the crown 3 and the plate 4 via intermediate pinions or a planetary gear.

On retrouve sur la figure 2 le plateau 4 sur lequel le tambour de fraisage 8 est fixé, conformément à l'invention.FIG. 2 shows the plate 4 on which the milling drum 8 is fixed, in accordance with the invention.

A cet effet, le plateau 4 présente sur sa périphérie une surface polygonale externe 9 dont les génératrices sont parallèles à l'axe du dispositif moteur. La partie 8a du tambour de fraisage 8 comporte à sa périphérie interne une surface polygonale 10 de forme correspondant à celle de la surface polygonale 9, mais de dimensions très légèrement supérieures de manière à ce que le tambour de fraisage 8, 8a, puisse être facilement engagé contre le plateau 4.To this end, the plate 4 has on its periphery an external polygonal surface 9 whose generatrices are parallel to the axis of the drive device. The portion 8a of the milling drum 8 has at its inner periphery a polygonal surface 10 of shape corresponding to that of the polygonal surface 9, but of very slightly larger dimensions so that the milling drum 8, 8a, can be easily engaged against the plate 4.

On remarque sur la figure 2 dans laquelle le jeu entre la surface polygonale 9 et la surface polygonale 10, a été exagéré pour la clarté du dessin, que les sommets 9a de la surface polygonale 9 ont été sectionnés, tandis que les creux 10a de la surface polygonale 10 ont été arrondis.Note in FIG. 2 in which the clearance between the polygonal surface 9 and the polygonal surface 10 has been exaggerated for the clarity of the drawing, that the vertices 9 a of the polygonal surface 9 have been sectioned, while the hollows 10 a of the polygonal area 10 have been rounded.

On s'assure de cette manière que le couple d'entraînement est bien assuré par la majeure partie des surfaces des côtés des polygones 9 et 10 qui, dans le cas présent, sont des hexagones.In this way, it is ensured that the drive torque is well ensured by most of the surfaces of the sides of the polygons 9 and 10 which, in this case, are hexagons.

La partie 8a du tambour de fraisage 8 est assujettie au plateau 4, par des boulons 11 qui sont vissés dans des orifices taraudés de du plateau 4 et qui traversent la partie 8a du tambour de fraisage 8 par des orifices dont les dimensions sont suffisantes pour faire en sorte que le couple d'entraînement soit transmis par les côtés des surfaces polygonales 9 et 10 lorsque ces côtés viennent au contact l'un de l'autre et non par le cisaillement des boulons 11.The portion 8a of the milling drum 8 is secured to the plate 4 by bolts 11 which are screwed into threaded holes of the plate 4 and which traverse the portion 8a of the milling drum 8 via orifices whose dimensions are sufficient to ensure that the drive torque is transmitted by the sides of the polygonal surfaces 9 and 10 when these sides come into contact with one another and not by the shearing of the bolts 11.

Conformément à un mode de réalisation perfectionné de l'invention, et comme on peut le voir sur la figure 1, la périphérie du plateau 4 comporte une surface tronconique 12 dont l'axe correspond à l'axe de rotation du plateau 4, le sommet du cône de cette surface étant situé vers l'extérieur de l'appareil de fraisage.In accordance with an improved embodiment of the invention, and as can be seen in FIG. 1, the periphery of the plate 4 has a frustoconical surface 12 whose axis corresponds to the axis of rotation of the plate 4, the apex of the cone of this surface being located towards the outside of the milling apparatus.

Le tambour de fraisage 8 comporte de son côté une surface tronconique concave de forme correspondante 13 qui en venant s'appliquer contre la surface tronconique 12 permet d'assurer un positionnement exact du tambour de fraisage 8 sur le dispositif moteur.The milling drum 8 has, for its part, a concave frustoconical surface of corresponding shape 13 which, by coming to bear against the frustoconical surface 12, ensures an exact positioning of the milling drum 8 on the motor device.

Pour procéder au montage du tambour de fraisage 8, on engage ce dernier autour du dispositif moteur en amenant la surface tronconique concave 13 au contact de la surface tronconique convexe 12 en s'arrangeant pour que les orifices de la partie 8a du tambour soient dans une position telle qu'ils permettent le vissage des boulons 11 qui assurent le maintien provisoire du tambour 8 sur le dispositif moteur.In order to mount the milling drum 8, the latter is engaged around the motor device by bringing the concave frustoconical surface 13 into contact with the convex frustoconical surface 12 by arranging that the orifices of the portion 8a of the drum are in a position such as to enable the screw bolts 11 which ensure the provisional retention of the drum 8 of the driving device.

L'on exerce ensuite entre le plateau 4 et le tambour de fraisage 8 un couple orienté dans le sens du travail de la fraise, de manière à provoquer l'engagement des surfaces polygonales 9 et 10 l'une sur l'autre.There is then exerted between the plate 4 and the milling drum 8 a torque oriented in the direction of work of the cutter, so as to cause the engagement of the polygonal surfaces 9 and 10 one on the other.

Après quoi, on serre définitivement les boulons 11 pour assurer la rigidité de l'ensemble.After which, the bolts 11 are finally tightened to ensure the rigidity of the assembly.

Pour procéder au démontage d'un tambour de fraisage, il suffit de dévisser les boulons 11 pour pouvoir dégager le tambour du fait que l'angle des surfaces tronconiques 9 et 10 est supérieur à l'angle de frottement.To disassemble a milling drum, simply unscrew the bolts 11 to be able to disengage the drum because the angle of the frustoconical surfaces 9 and 10 is greater than the friction angle.

On voit que, grâce à l'invention, la fixation et le démontage des tambours de fraisage s'effectuent d'une manière particulièrement simple, ce qui permet, sans perte de temps, de les changer chaque fois que les caractéristiques du terrain le nécessitent.It can be seen that, thanks to the invention, the fixing and dismantling of the milling drums is carried out in a particularly simple manner, which makes it possible, without loss of time, to change them each time the characteristics of the ground so require. .

Il est bien entendu que le mode de réalisation qui a été décrit ne présente aucun caractère limitatif et qu'il pourra recevoir toutes modifications désirables sans sortir pour cela du cadre de l'invention.It is understood that the embodiment which has been described has no limiting character and that it may receive any desirable modifications without departing from the scope of the invention.

En particulier, il est clair que l'on peut, dans une version simplifiée, ne pas réaliser les surfaces tronconiques 12 et 13, auquel cas, l'appui des surfaces polygonales 9 et 10 l'une contre l'autre assure à la fois le positionnement axial et la transmission du couple, les boulons 11 ne servant qu'à réunir ces deux éléments.In particular, it is clear that it is possible, in a simplified version, not to produce the frustoconical surfaces 12 and 13, in which case, the support of the polygonal surfaces 9 and 10 against each other ensures both the axial positioning and the transmission of the torque, the bolts 11 only serving to join these two elements.

Dans une autre variante, il est également possible de réaliser les surfaces polygonales 9 et 10, non point avec des génératrices parallèles à l'axe, mais avec des génératrices inclinées de manière à leur donner une forme pyramidale.In another variant, it is also possible to produce the polygonal surfaces 9 and 10, not with generatrices parallel to the axis, but with generatrices inclined so as to give them a pyramidal shape.

Dans ce cas, les surfaces 9 et 10 assurent à la fois le positionnement axial du tambour 8 et son entraînement en rotation.In this case, the surfaces 9 and 10 ensure both the axial positioning of the drum 8 and its drive in rotation.

Claims (5)

1. Dispositif de fixation des tambours de fraisage sur un appareil destiné à creuser des tranchées dans le sol, caractérisé par le fait que le dispositif moteur comporte un plateau tournant (4) disposé perpendiculairement à son axe et à l'extrémité de celui-ci, plateau qui présente sur sa périphérie une forme polygonale convexe (9) alors que le tambour de fraisage (8) est muni d'une partie (8a) comportant un évidement central de forme polygonale concave (10) correspondant à la forme polygonale convexe (9) du plateau (4) et de dimensions légèrement supérieures, des organes de maintien (11) réunissant le tambour de fraisage (8) audit plateau (4) de manière telle que l'entraînement en rotation du tambour de fraisage (8) par le plateau (4) s'effectue par l'intermédiaire des surfaces polygonales précitées (9,10) qui viennent s'engager l'une contre l'autre.1. Device for fixing the milling drums to an apparatus intended for digging trenches in the ground, characterized in that the motor device comprises a turntable (4) arranged perpendicularly to its axis and to the end thereof , plate which has on its periphery a convex polygonal shape (9) while the milling drum (8) is provided with a part (8 a ) comprising a central recess of concave polygonal shape (10) corresponding to the convex polygonal shape (9) of the plate (4) and of slightly larger dimensions, holding members (11) joining the milling drum (8) to said plate (4) in such a way as to drive the milling drum (8) in rotation. by the plate (4) is effected by means of the aforementioned polygonal surfaces (9, 10) which engage one against the other. 2. Dispositif selon la revendication 1, caractérisé par le fait que la partie (8a) du tambour de fraisage (8) est reliée au plateau (4) du dispositif moteur par des boulons (11) disposés entre les sommets des surfaces polygonales (9,10) qui assurent l'entraînement du tambour du fraisage.2. Device according to claim 1, characterized in that the part (8 a ) of the milling drum (8) is connected to the plate (4) of the motor device by bolts (11) disposed between the tops of the polygonal surfaces ( 9,10) which drive the milling drum. 3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par le fait que la périphérie du plateau (4) du dispositif moteur comporte une surface tronconique convexe (12) qui s'engage sur une surface tronconique concave (13) de forme correspondante solidaire du tambour de fraisage (8).3. Device according to any one of the preceding claims, characterized in that the periphery of the plate (4) of the motor device comprises a convex frustoconical surface (12) which engages on a concave frustoconical surface (13) of corresponding shape integral with the milling drum (8). 4. Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé par le fait que les surfaces polygonales (9,10) ont la forme de troncs de pyramides.4. Device according to any one of claims 1 and 2, characterized in that the polygonal surfaces (9,10) have the shape of trunks of pyramids. 5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par le fait que les surfaces polygonales (9,10) sont hexagonales.5. Device according to any one of the preceding claims, characterized in that the polygonal surfaces (9,10) are hexagonal.
EP90400091A 1989-01-13 1990-01-12 Device for connecting cutting drums to an apparatus used for digging trenches in the soil Expired - Lifetime EP0378485B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90400091T ATE96871T1 (en) 1989-01-13 1990-01-12 DEVICE FOR ATTACHING CUTTING DRUMS TO AN EXCAVATOR DEDICATED TO DIGING TRENCHES IN THE GROUND.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900390A FR2641807B1 (en) 1989-01-13 1989-01-13 DEVICE FOR FIXING MILLING DRUMS ON AN APPARATUS FOR HOLLOW GROUNDING
FR8900390 1989-01-13

Publications (2)

Publication Number Publication Date
EP0378485A1 true EP0378485A1 (en) 1990-07-18
EP0378485B1 EP0378485B1 (en) 1993-11-03

Family

ID=9377707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90400091A Expired - Lifetime EP0378485B1 (en) 1989-01-13 1990-01-12 Device for connecting cutting drums to an apparatus used for digging trenches in the soil

Country Status (9)

Country Link
US (1) US4991322A (en)
EP (1) EP0378485B1 (en)
JP (1) JPH0718166B2 (en)
AR (1) AR244834A1 (en)
AT (1) ATE96871T1 (en)
CA (1) CA2007708A1 (en)
DE (1) DE69004273T2 (en)
FR (1) FR2641807B1 (en)
RU (1) RU1834955C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975323A1 (en) * 2007-03-28 2008-10-01 Compagnie du Sol Cutting head for a soil-cutting machine with rotary cutters
EP2597205A1 (en) * 2011-11-23 2013-05-29 BAUER Maschinen GmbH Milling wheel assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2819834B1 (en) * 2001-01-23 2003-04-04 Cie Du Sol MILLING TOOL FOR CUTTING HARD AND STICKY TERRAIN

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FR1511232A (en) * 1966-02-17 1968-01-26 Hewitt Robins Int Sa Vertical bucket excavator wheel
US3390473A (en) * 1964-03-26 1968-07-02 Mechanical Excavators Inc Portable wheel excavator and method of excavating
EP0249551A1 (en) * 1986-06-11 1987-12-16 ETS. RIVARD S.A. Société dite: Digging wheel, in particular for digging trenches
EP0262050A1 (en) * 1986-09-26 1988-03-30 SOLETANCHE Société Anonyme dite: Digging device for earthmovingmachine used for digging trenches into the ground

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US2732641A (en) * 1956-01-31 Jespersen
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GB909790A (en) * 1960-08-27 1962-11-07 Rotary Hoes Ltd Means for adjustably holding a straight earth-cutting tool in an earth-working rotor
GB1405715A (en) * 1972-03-11 1975-09-10 Winckelhaus W Locking devices
JPS60168827A (en) * 1984-02-10 1985-09-02 Sekitan Rotenbori Kikai Gijutsu Kenkyu Kumiai Fitting structure of wheel with back-up ring and hub

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US3390473A (en) * 1964-03-26 1968-07-02 Mechanical Excavators Inc Portable wheel excavator and method of excavating
FR1511232A (en) * 1966-02-17 1968-01-26 Hewitt Robins Int Sa Vertical bucket excavator wheel
EP0249551A1 (en) * 1986-06-11 1987-12-16 ETS. RIVARD S.A. Société dite: Digging wheel, in particular for digging trenches
EP0262050A1 (en) * 1986-09-26 1988-03-30 SOLETANCHE Société Anonyme dite: Digging device for earthmovingmachine used for digging trenches into the ground

Non-Patent Citations (1)

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Title
PATENT ABSTRACTS OF JAPAN, vol. 10 no. 6 (M-445)[2063], 11 janvier 1986, page 9 M 445; & JP-A-60 168 827 (SEKITAN ROTENBORI KIKAI GIJUTSU KENKIYUU KUMIAI) 02-09-1985 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975323A1 (en) * 2007-03-28 2008-10-01 Compagnie du Sol Cutting head for a soil-cutting machine with rotary cutters
FR2914331A1 (en) * 2007-03-28 2008-10-03 Cie Du Sol Soc Civ Ile CUTTING HEAD FOR ROTATING STRAW GROUT CUTTING MACHINE
US8128178B2 (en) 2007-03-28 2012-03-06 Compagnie Du Sol Cutter head for a ground cutter machine having rotary cutters
EP2597205A1 (en) * 2011-11-23 2013-05-29 BAUER Maschinen GmbH Milling wheel assembly

Also Published As

Publication number Publication date
CA2007708A1 (en) 1990-07-13
US4991322A (en) 1991-02-12
JPH02232419A (en) 1990-09-14
EP0378485B1 (en) 1993-11-03
FR2641807B1 (en) 1991-04-05
AR244834A1 (en) 1993-11-30
RU1834955C (en) 1993-08-15
JPH0718166B2 (en) 1995-03-01
FR2641807A1 (en) 1990-07-20
DE69004273D1 (en) 1993-12-09
DE69004273T2 (en) 1994-04-28
ATE96871T1 (en) 1993-11-15

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