EP0249551A1 - Digging wheel, in particular for digging trenches - Google Patents

Digging wheel, in particular for digging trenches Download PDF

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Publication number
EP0249551A1
EP0249551A1 EP87401290A EP87401290A EP0249551A1 EP 0249551 A1 EP0249551 A1 EP 0249551A1 EP 87401290 A EP87401290 A EP 87401290A EP 87401290 A EP87401290 A EP 87401290A EP 0249551 A1 EP0249551 A1 EP 0249551A1
Authority
EP
European Patent Office
Prior art keywords
wheel
periphery
faces
face
crown
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
EP87401290A
Other languages
German (de)
French (fr)
Other versions
EP0249551B1 (en
Inventor
Daniel Rivard
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.)
Ets Rivard Sa Dite Ste
Rivard SAS
Original Assignee
Ets Rivard Sa Dite Ste
Rivard SAS
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 Ets Rivard Sa Dite Ste, Rivard SAS filed Critical Ets Rivard Sa Dite Ste
Priority to AT87401290T priority Critical patent/ATE48292T1/en
Publication of EP0249551A1 publication Critical patent/EP0249551A1/en
Application granted granted Critical
Publication of EP0249551B1 publication Critical patent/EP0249551B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • E02F9/2808—Teeth
    • E02F9/2858—Teeth characterised by shape
    • 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
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type 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
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/241—Digging wheels; Digging elements of wheels; Drives for wheels digging 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
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements
    • 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

Definitions

  • the present invention relates to a slicer wheel for a slicing machine.
  • the slicing machines include an automotive chassis, for example a tractor, on which is mounted a cutting wheel capable of being rotated and provided at its periphery with a plurality of tools for digging the ground.
  • the tools are either fixed directly to the periphery of the wheel, generally by welding, or fixed to removable crown portions regularly distributed around the periphery of the wheel, said portions being bolted to said wheel.
  • the first case prohibits the replacement of a broken tool or the change of types of tools by others, depending on the nature of the terrain encountered. It is then necessary to change the entire wheel.
  • the second case although it makes it possible to change the portions carrying the tools, requires, because of the use of bolts, careful handling (screwing, unscrewing of bolts, cooperation of the threads between them ”) often carried out in difficult conditions, resulting in significant intervention time.
  • the present invention overcomes these drawbacks and relates to a slicer wheel, the assembly and disassembly of the removable crown portions carrying the tools easily and quickly effect.
  • the slicer wheel according to the invention of the type in which the tools are mounted on crown portions removably attached to the periphery of said wheel, is remarkable in that the means for fixing each portion of crown on the periphery of said wheel include: - A first set of two end faces, provided respectively at the ends of said crown portion; - A second set of two abutment faces integral with the periphery of said wheel and orthogonal to the plane thereof; and - a wedge-shaped key which can be inserted from the outside of the periphery of said wheel in the direction of the interior thereof, between an end face of said first set and an abutment face of said second set for pressurizing the other of said end faces of said first set against the other of said abutment faces of said second set.
  • the fixing of said portion is achieved by the introduction of the key in the space defined between one of the end faces of the first assembly and one of the abutment faces of the second assembly causing the other end face of said first assembly to come into contact under pressure against the other face of stop of the second set, so as to allow blocking by jamming of said crown portion.
  • the two end faces of the first set are inclined so as to converge towards the convexity of said portion of crowned.
  • the inclinations of the two end faces of said first set are symmetrically identical with respect to a median perpendicular plane to said portion of the crown.
  • the two abutment faces of the second set are inclined so as to converge them outside the periphery of the wheel, one of the abutment faces of the second set having an inclination corresponding to that of one of the end faces of the first set, while the other abutment face of said second set has a different inclination from that of the other end face of said first set, the space separating the last two faces widening towards the outside of the periphery of the wheel.
  • the two abutment faces of the second set each belong to integral corners of said periphery.
  • said key has two lateral sides of corresponding inclination, one with that of the cooperating end face of the first set and the other with that of the cooperating stop face of the second set.
  • said key In order to increase the security of the fixing, said key, once introduced into the space delimited between said faces of different inclination, is held in position on said periphery by a retaining member.
  • Said tools arranged on each removable crown portion mounted on the periphery of the wheel are either rock tools or ground tools.
  • said tools arranged on each removable crown portion are both rock tools and earth tools.
  • the invention also relates to a cutting wheel remarkable in that said portions carrying the tools are mounted in an annular groove formed at the periphery of the wheel, each corner comprising one of said abutment faces of the second assembly being mounted in said groove.
  • the invention relates to a remarkable slicing machine in that it comprises at least one slicer wheel as defined above.
  • the trencher wheel according to the invention is intended to make trenches in the ground. It is capable of being driven in rotation by drive means known per se but not shown.
  • This slicer wheel consists of a substantially flat circular flange 1 rotatably mounted about its axis 2. As shown more in Figures 2 to 4, at the periphery 3 of the flange 1, it is arranged, parallel and coaxial thereto , a ring 6 secured to said flange by means of a lateral hoop 4 welded to one face of the flange 1. An annular groove 7 is then defined between the ring 6 and the part 5 of the face of the flange 1 in correspondence with the ring 6, the hoop 4 forming the bottom of the groove 7.
  • removable crown portions 8 preferably identical and regularly distributed over the periphery 3 of the flange 1, are capable of being arranged in the annular groove 7.
  • Tools 10, intended for digging the ground, are mounted on the face convex 11 of each of the crown portions 8.
  • supports 13 On the concave face 12 of each of them are provided supports 13 able to come to bear against the bottom of the groove 7 during the mounting of each portion 8.
  • Each portion of the removable crown 8 has two end faces 14A and 14B situated respectively at the ends of each of the portions. These two end faces 14A and 14B, defining a first set, are inclined to converge towards the convexity of each portion, that is to say towards the outside of the wheel. In addition, these two faces 14A and 14B are orthogonal to the plane of the wheel and, advantageously, have a symmetrically identical inclination with respect to the median perpendicular plane to each portion.
  • wedges 16 are arranged integrally by welding. More precisely, these corners 16 are positioned two by two, so that a portion of crown 8 can be introduced between two corners of the same couple in this case 16A and 16B. The length of the arc separating the two corners is greater than that of the corresponding crown portion 8.
  • each pair of corners 16A and 16B, each arranged on either side of a portion of crown 8, has two inclined abutment faces, respectively 17A and 17B.
  • each removable crown portion 8 in the groove 7 of said wheel is achieved by the cooperation of the first set of end faces 14A and 14B of a crown portion in the second set of faces of abutment 17A and 17B of a corresponding corner pair and by the interposition of a key 20 in said space 18 mentioned above.
  • the key 20 then has two lateral sides 21 and 22, one of which, 21, has an inclination identical to that of the face 14B of the crown portion 8, and the other of which, 22, has an inclination identical to that from face 17B of corner 16B.
  • the assembly and the fixing of a portion of crown 8 is carried out as follows: the portion 8 is introduced by the concave face 12 between the ring 6 and the part 5 of the flange defining the sides of the groove 7 until the supports 13 rest on the hoop 4 secured to the flange 1, and corresponding to the bottom of the groove 7.
  • the crown portion 8 is moved towards the corner 16A so that the face 14A and the face 17A of identical inclinations are disposed substantially opposite one another.
  • the insertion of the key 20 is thus facilitated since the space 18 separating the faces 14B and 17B is almost maximum.
  • the key 20 is then inserted into this space 18 so that its lateral sides 21 and 22 come into contact with the faces 14B and 17B respectively. Then, the key 20 is forced in by means of a tool such as a hammer in the space 18, which has the consequence of displacing the crown portion 8 against the wedge 16A secured to at least one side of the groove. Thus, the face 14A is applied under pressure against the face 17A.
  • a retaining member 23 connects the key to the sides of the groove. More precisely, as shown in FIG. 4, an orifice 24 drilled in each of the keys comes opposite coaxial orifices 25 and 26, respectively made in some, 25, in part 5 of the flange 1 and the others, 26, in the ring 6.
  • the orifices 24, 25 and 26 are substantially coaxial, and the retaining member 23, such as a pin, is then pressed into its orifices to maintain and lock in position said key. Each key is thus held in its position.
  • the slicer wheel is then ready to operate.
  • each key is provided with an opening 29 allowing the insertion of an element therein for ejecting said key.
  • the tools 10 fixed on the convex face 11 of each of the removable crown portions 8 are either knives 31 intended for digging soft ground (earth, sand, etc.), or peaks 32 intended for digging hard ground (stones, rocks, ).
  • each corner could include an inclined abutment face 17A on which the inclined end face 14A of a first portion of the crown 8 is pressed and an inclined abutment face 17B, opposite the previous one, on which is pressed against the lateral side 22 of the key wedging a second portion of the crown contiguous to the first portion of the crown.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A trenching wheel more especially for digging trenches, of the type in which the tools are mounted on ring portions removably fixed to the periphery of said wheel. The arrangement for fixing each ring portion to the periphery of said wheel include: a first assembly of two end faces provided respectively at the ends of said ring portion a second assembly of two abutment faces fixed to the periphery of said wheel and orthogonal to the plane thereof; and a wedge shaped key insertable from outside the periphery of said wheel inwardly thereof, between an end face of said first assembly and an abutment face of said second assembly for applying the other of said end faces of said first assembly under pressure against the other of said abutment faces of said second assembly.

Description

La présente invention concerne une roue trancheuse pour machine à trancher.The present invention relates to a slicer wheel for a slicing machine.

On sait que, notamment en vue de la pose souterraine de câbles ou de canalisations, il est nécessaire d'ouvrir des tranchées dans le sol. Pour cela, les machines à trancher comportent un châssis automobile, par exemple un tracteur, sur lequel est montée une roue trancheuse susceptible d'être entraînée en rotation et munie à sa périphérie d'une pluralité d'outils servant à creuser le sol.It is known that, in particular for the underground laying of cables or pipes, it is necessary to open trenches in the ground. For this, the slicing machines include an automotive chassis, for example a tractor, on which is mounted a cutting wheel capable of being rotated and provided at its periphery with a plurality of tools for digging the ground.

Les outils sont, soit fixés directement à la périphérie de la roue, généralement par soudure, soit fixés à des portions de couronne amovibles régulièrement réparties autour de la périphérie de la roue, lesdites portions étant boulonnées sur ladite roue.The tools are either fixed directly to the periphery of the wheel, generally by welding, or fixed to removable crown portions regularly distributed around the periphery of the wheel, said portions being bolted to said wheel.

Le premier cas interdit le remplacement d'un outil brisé ou le changement de types d'outils par d'autres, en fonction de la nature du terrain rencontré. Il est alors nécessaire de changer la roue entière.The first case prohibits the replacement of a broken tool or the change of types of tools by others, depending on the nature of the terrain encountered. It is then necessary to change the entire wheel.

Le second cas, bien qu'il permette de changer les portions portant les outils, nécessite, à cause de l'emploi de boulons, des manipulations minutieuses (vissage, dévissage des boulons, coopération des filetages entre eux...) souvent effectuées dans des conditions difficiles, entraînant alors un temps d'intervention important.The second case, although it makes it possible to change the portions carrying the tools, requires, because of the use of bolts, careful handling (screwing, unscrewing of bolts, cooperation of the threads between them ...) often carried out in difficult conditions, resulting in significant intervention time.

La présente invention remédie à ces inconvénients et concerne une roue trancheuse, dont le montage et le démontage des portions de couronne amovibles portant les outils d'effectuent aisément et rapidement.The present invention overcomes these drawbacks and relates to a slicer wheel, the assembly and disassembly of the removable crown portions carrying the tools easily and quickly effect.

A cet effet, la roue trancheuse, selon l'invention, du type dans lequel les outils sont montés sur des portions de couronne fixées de façon amovible à la périphérie de ladite roue, est remarquable en ce que les moyens de fixation de chaque portion de couronne sur la périphérie de ladite roue comportent :
- un premier ensemble de deux faces d'extrémité, prévues respectivement aux extrémités de ladite portion de couronne ;
- un second ensemble de deux faces de butée solidaires de la périphérie de ladite roue et orthogonales au plan de celle-ci ; et
- une clavette en forme de coin pouvant être introduite, depuis l'extérieur de la périphérie de ladite roue en direction de l'intérieur de celle-ci, entre une face d'extrémité dudit premier ensemble et une face de butée dudit second ensemble pour appliquer sous pression l'autre desdites faces d'extrémité dudit premier ensemble contre l'autre desdites faces de butée dudit second ensemble.To this end, the slicer wheel according to the invention, of the type in which the tools are mounted on crown portions removably attached to the periphery of said wheel, is remarkable in that the means for fixing each portion of crown on the periphery of said wheel include:
- A first set of two end faces, provided respectively at the ends of said crown portion;
- A second set of two abutment faces integral with the periphery of said wheel and orthogonal to the plane thereof; and
- a wedge-shaped key which can be inserted from the outside of the periphery of said wheel in the direction of the interior thereof, between an end face of said first set and an abutment face of said second set for pressurizing the other of said end faces of said first set against the other of said abutment faces of said second set.

Ainsi, grâce à l'invention, après avoir placé ladite portion de couronne portant les outils sur la périphérie de ladite roue entre les deux faces de butée dudit second ensemble, la fixation de ladite portion est réalisée par l'introduction de la clavette dans l'espace défini entre l'une des faces d'extrémité du premier ensemble et l'une des faces de butée du second ensemble provoquant la mise en contact sous pression de l'autre face d'extrémité dudit premier ensemble contre l'autre face de butée du second ensemble, de façon à permettre ainsi le blocage par coincement de ladite portion de couronne.Thus, thanks to the invention, after placing said crown portion carrying the tools on the periphery of said wheel between the two abutment faces of said second set, the fixing of said portion is achieved by the introduction of the key in the space defined between one of the end faces of the first assembly and one of the abutment faces of the second assembly causing the other end face of said first assembly to come into contact under pressure against the other face of stop of the second set, so as to allow blocking by jamming of said crown portion.

Selon une caractéristique avantageuse de l'invention, les deux faces d'extrémité du premier ensemble sont inclinées de façon à converger vers la convexité de ladite portion de couronne. Avantageusement, les inclinaisons des deux faces d'extrémité dudit premier ensemble sont symétriquement identiques par rapport à un plan perpendiculaire médian à ladite portion de couronne.According to an advantageous characteristic of the invention, the two end faces of the first set are inclined so as to converge towards the convexity of said portion of crowned. Advantageously, the inclinations of the two end faces of said first set are symmetrically identical with respect to a median perpendicular plane to said portion of the crown.

Selon une autre caractéristique de l'invention, les deux faces de butée du second ensemble sont inclinées de façon à converger les l'extérieur de la périphérie de la roue, l'une des faces de butée du second ensemble ayant une inclinaison correspondant à celle de l'une des faces d'extrémité du premier ensemble, tandis que l'autre face de butée dudit second ensemble a une inclinaison différente de celle de l'autre face d'extrémité dudit premier ensemble, l'espace séparant les deux dernières faces s'élargissant vers l'extérieur de la périphérie de la roue.According to another characteristic of the invention, the two abutment faces of the second set are inclined so as to converge them outside the periphery of the wheel, one of the abutment faces of the second set having an inclination corresponding to that of one of the end faces of the first set, while the other abutment face of said second set has a different inclination from that of the other end face of said first set, the space separating the last two faces widening towards the outside of the periphery of the wheel.

Dans un mode préféré de réalisation, les deux faces de butée du second ensemble appartiennent chacune à des coins solidaires de ladite périphérie.In a preferred embodiment, the two abutment faces of the second set each belong to integral corners of said periphery.

Afin d'assurer le blocage par coincement de la portion de couronne entre les deuxdits coins, ladite clavette comporte deux côtés latéraux d'inclinaison correspondant, l'un avec celle de la face d'extrémité coopérante du premier ensemble et l'autre avec celle de la face de butée coopérante du second ensemble.In order to ensure the blocking by wedging of the crown portion between the two said corners, said key has two lateral sides of corresponding inclination, one with that of the cooperating end face of the first set and the other with that of the cooperating stop face of the second set.

Afin d'augmenter la sécurité de la fixation, ladite clavette, une fois introduite dans l'espace délimité entre lesdites faces d'inclinaison différente, est maintenue en position sur ladite périphérie par un organe de retenue.In order to increase the security of the fixing, said key, once introduced into the space delimited between said faces of different inclination, is held in position on said periphery by a retaining member.

Selon une autre caractéristique de l'invention, afin de pouvoir démonter aisément ladite portion de couronne portant les outils pour procéder par exemple à leur maintenance, ou à un changement de portion portant un autre type d'outils, il est ménagé dans ladite clavette une ouverture dans laquelle est susceptible de s'introduire un élément pour l'éjecter hors de la périphérie de la roue.According to another characteristic of the invention, in order to be able to easily disassemble said portion of crown carrying the tools, for example to carry out their maintenance, or to change a portion carrying another type of tools, there is formed in said key an opening in which is likely to introduce an element for ejecting it out of the periphery of the wheel.

Lesdits outils disposés sur chaque portion de couronne amovible montée sur la périphérie de la roue sont soit des outils à roche, soit des outils à terre. Avantageusement, lorsque le sol à creuser est constitué d'un amalgame de roches et de terre, lesdits outils disposés sur chaque portion de couronne amovible sont à la fois des outils à roche et des outils à terre.Said tools arranged on each removable crown portion mounted on the periphery of the wheel are either rock tools or ground tools. Advantageously, when the soil to be dug consists of an amalgam of rocks and earth, said tools arranged on each removable crown portion are both rock tools and earth tools.

L'invention concerne également une roue trancheuse remarquable en ce que lesdites portions portant les outils sont montées dans une gorge annulaire ménagée à la périphérie de la roue, chaque coin comportant une desdites faces de butée du second ensemble étant monté dans ladite gorge.The invention also relates to a cutting wheel remarkable in that said portions carrying the tools are mounted in an annular groove formed at the periphery of the wheel, each corner comprising one of said abutment faces of the second assembly being mounted in said groove.

Enfin l'invention concerne une machine à trancher remarquable en ce qu'elle comporte au moins une roue de trancheuse telle que définie ci-dessus.Finally, the invention relates to a remarkable slicing machine in that it comprises at least one slicer wheel as defined above.

Les figures du dessin annexé feront bien comprendre comment l'invention peut être réalisée. Des références identiques désignent des éléments semblables.

  • La figure 1 est une vue de face partiellement écorchée d'une roue trancheuse selon l'invention.
  • Les figures 2,3 et 4 représentent des vues en coupe de la roue trancheuse selon des plans de coupe respectivement II-II, III-III et IV-IV de la figure 1.
  • La figure 5 est une vue éclatée agrandie des principaux éléments constituant une portion de couronne de la roue trancheuse selon l'invention avant assemblage.
  • La figure 6 représente en pespective une des portions de couronne amovibles portant des outils à roche et à terre.
The figures of the appended drawing will make it clear how the invention can be implemented. Identical references designate similar elements.
  • Figure 1 is a partially cutaway front view of a slicer wheel according to the invention.
  • Figures 2,3 and 4 show sectional views of the slicer wheel according to section planes II-II, III-III and IV-IV respectively of Figure 1.
  • Figure 5 is an enlarged exploded view of the main elements constituting a crown portion of the cutting wheel according to the invention before assembly.
  • Figure 6 shows in perspective one of the removable crown portions carrying rock and earth tools.

La roue trancheuse selon l'invention, montée en général sur un tracteur au moyen de bras oscillants non représentés, est destinée à réaliser des tranchées dans le sol. Elle est susceptible d'être entraînée en rotation par des moyens d'entraînement connus en soi mais non représentés.The trencher wheel according to the invention, generally mounted on a tractor by means of swing arms not shown, is intended to make trenches in the ground. It is capable of being driven in rotation by drive means known per se but not shown.

Cette roue trancheuse est constituée d'un flasque circu­laire 1 sensiblement plat monté rotatif autour de son axe 2. Comme le montre davantage les figures 2 à 4, à la péri­phérie 3 du flasque 1, il est disposé, parallèlement et coaxialement à celui-ci, un anneau 6 solidaire dudit flasque par l'intermédiaire d'une frette latérale 4 soudée sur une face du flasque 1. Une gorge annulaire 7 est alors définie entre l'anneau 6 et la partie 5 de la face du flasque 1 en correspondance de l'anneau 6, la frette 4 formant le fond de la gorge 7.This slicer wheel consists of a substantially flat circular flange 1 rotatably mounted about its axis 2. As shown more in Figures 2 to 4, at the periphery 3 of the flange 1, it is arranged, parallel and coaxial thereto , a ring 6 secured to said flange by means of a lateral hoop 4 welded to one face of the flange 1. An annular groove 7 is then defined between the ring 6 and the part 5 of the face of the flange 1 in correspondence with the ring 6, the hoop 4 forming the bottom of the groove 7.

Ainsi, des portions de couronne amovibles 8, de préférence identiques et régulièrement répartis sur la périphérie 3 du flasque 1, sont susceptibles d'être agencées dans la gorge annulaire 7. Des outils 10, destinés à creuser le sol, sont montés sur la face convexe 11 de chacune des portions de couronne 8. Sur la face concave 12 de chacune d'elles sont ménagés des appuis 13 aptes à venir s'appliquer contre le fond de la gorge 7 lors du montage de chaque portion 8.Thus, removable crown portions 8, preferably identical and regularly distributed over the periphery 3 of the flange 1, are capable of being arranged in the annular groove 7. Tools 10, intended for digging the ground, are mounted on the face convex 11 of each of the crown portions 8. On the concave face 12 of each of them are provided supports 13 able to come to bear against the bottom of the groove 7 during the mounting of each portion 8.

Chaque portion du couronne amovible 8 possède deux faces 14A et 14B d'extrémité situées respectivement aux extré­mités de chacune des portions. Ces deux faces d'extrémité 14A et 14B, définissant un premier ensemble, sont inclinées pour converger vers la convexité de chaque portion, c'est-­à-dire vers l'extérieur de la roue. De plus, ces deux faces 14A et 14B sont orthogonales au plan de la roue et, avanta­geusement, ont une inclinaison symétriquement indentique par rapport au plan perpendiculaire médian à chaque portion.Each portion of the removable crown 8 has two end faces 14A and 14B situated respectively at the ends of each of the portions. These two end faces 14A and 14B, defining a first set, are inclined to converge towards the convexity of each portion, that is to say towards the outside of the wheel. In addition, these two faces 14A and 14B are orthogonal to the plane of the wheel and, advantageously, have a symmetrically identical inclination with respect to the median perpendicular plane to each portion.

La largeur de ces portions de couronne amovibles 8 est déterminée pour que celles-ci s'ajustent correctement entre l'anneau 6 et la partie 5 du flasque 1 définissant les flancs de la gorge 7.The width of these removable crown portions 8 is determined so that they fit correctly between the ring 6 and the part 5 of the flange 1 defining the sides of the groove 7.

Dans cette dernière, sont agencés solidairement des coins 16 par soudure. Plus précisement, ces coins 16 sont positionnés deux à deux, de façon qu'une portion de couronne 8 puisse être introduite entre deux coins d'un même couple en l'occurrence 16A et 16B. La longueur de l'arc de cercle séparant les deux coins est supérieure à celle de la portion de couronne correspondante 8.In the latter, wedges 16 are arranged integrally by welding. More precisely, these corners 16 are positioned two by two, so that a portion of crown 8 can be introduced between two corners of the same couple in this case 16A and 16B. The length of the arc separating the two corners is greater than that of the corresponding crown portion 8.

Comme on peut le voir sur les figures 1 et 5, chaque couple de coins 16A et 16B, disposés chacun de part et d'autre d'une portion de couronne 8, comporte deux faces inclinées de butée, respectivement 17A et 17B.As can be seen in FIGS. 1 and 5, each pair of corners 16A and 16B, each arranged on either side of a portion of crown 8, has two inclined abutment faces, respectively 17A and 17B.

Ces deux faces inclinées 17A et 17B, définissant un second ensemble, sont orthogonales au plan de la roue et conver­gent vers la convexité de la roue. Le point de convergence des faces inclinées de butée 17A et 17B est plus éloigné de la roue que celui des faces extrêmes 14A et 14B. En effet, l'inclinaison de la face 14A de chaque portion de couronne 8 est identique à celle de la face 17A du coin 16A corres­pondant, tandis que l'inclinaison de la face 14B de chaque portion de couronne 8 est différente de celle de la face 17B du coin 16B correspondant. Un espace 18 est ainsi créé entre la face 14B de chaque portion 8 et la face 17B du coin 16B correspondant. Cet espace 18 s'élargit du fond de la gorge 7 vers l'extérieur de celle-ci.These two inclined faces 17A and 17B, defining a second set, are orthogonal to the plane of the wheel and converge towards the convexity of the wheel. The point of convergence of the inclined abutment faces 17A and 17B is further from the wheel than that of the end faces 14A and 14B. Indeed, the inclination of the face 14A of each portion of the crown 8 is identical to that of the face 17A of the corresponding corner 16A, while the inclination of the face 14B of each portion of the crown 8 is different from that of the face 17B of the corresponding corner 16B. A space 18 is thus created between the face 14B of each portion 8 and the face 17B of the corresponding corner 16B. This space 18 widens from the bottom of the groove 7 towards the outside thereof.

Selon l'invention, la fixation de chaque portion de couronne amovible 8 dans la gorge 7 de ladite roue est réalisée par la coopération du premier ensemble de faces d'extrémité 14A et 14B d'une portion de couronne dans le second ensemble de faces de butée 17A et 17B d'un couple de coin correspondant et par l'interposition d'une clavette 20 dans ledit espace 18 mentionné ci-dessus.According to the invention, the fixing of each removable crown portion 8 in the groove 7 of said wheel is achieved by the cooperation of the first set of end faces 14A and 14B of a crown portion in the second set of faces of abutment 17A and 17B of a corresponding corner pair and by the interposition of a key 20 in said space 18 mentioned above.

La clavette 20 comporte alors deux côtés latéraux 21 et 22, dont l'un, 21, a une inclinaison identique à celle de la face 14B de la portion de couronne 8, et dont l'autre, 22, a une inclinaison identique à celle de la face 17B du coin 16B.The key 20 then has two lateral sides 21 and 22, one of which, 21, has an inclination identical to that of the face 14B of the crown portion 8, and the other of which, 22, has an inclination identical to that from face 17B of corner 16B.

Ainsi, comme on peut le voir en regard de la figure 5, l'assemblage et la fixation d'une portion de couronne 8 s'effectue de la façon suivante : la portion 8 est intro­duite par la face concave 12 entre l'anneau 6 et la partie 5 du flasque définissant les flancs de la gorge 7 jusqu'à ce que les appuis 13 reposent sur la frette 4 solidaire du flasque 1, et correspondant au fond de la gorge 7.Thus, as can be seen with reference to FIG. 5, the assembly and the fixing of a portion of crown 8 is carried out as follows: the portion 8 is introduced by the concave face 12 between the ring 6 and the part 5 of the flange defining the sides of the groove 7 until the supports 13 rest on the hoop 4 secured to the flange 1, and corresponding to the bottom of the groove 7.

La portion de couronne 8 est déplacée vers le coin 16A de façon que la face 14A et la face 17A d'inclinaisons identiques soient disposées sensiblement l'une en regard de l'autre. L'insertion de la clavette 20 est ainsi facilitée puisque l'espace 18 séparant les faces 14B et 17B est presque maximal.The crown portion 8 is moved towards the corner 16A so that the face 14A and the face 17A of identical inclinations are disposed substantially opposite one another. The insertion of the key 20 is thus facilitated since the space 18 separating the faces 14B and 17B is almost maximum.

La clavette 20 est alors insérée dans cet espace 18 pour que ses côtés latéraux 21 et 22 viennent respectivement en contact avec les faces 14B et 17B. Puis, la clavette 20 est enfoncée à force au moyen d'un outil tel qu'un marteau dans l'espace 18, ce qui a pour conséquence de déplacer la portion de couronne 8 contre le coin 16A solidaire d'au moins un flanc de la gorge. Ainsi, la face 14A est appliquée sous pression contre la face 17A.The key 20 is then inserted into this space 18 so that its lateral sides 21 and 22 come into contact with the faces 14B and 17B respectively. Then, the key 20 is forced in by means of a tool such as a hammer in the space 18, which has the consequence of displacing the crown portion 8 against the wedge 16A secured to at least one side of the groove. Thus, the face 14A is applied under pressure against the face 17A.

Le blocage de la portion de couronne 8 entre les deux coins 16A et 16B est ainsi obtenu par coincement au moyen des deux ensembles de faces inclinées de façon adéquate et de la clavette.The locking of the crown portion 8 between the two corners 16A and 16B is thus obtained by wedging by means of the two sets of adequately inclined faces and the key.

De plus, afin de maintenir en position de blocage chaque portion de couronne 8, et bien que le sens des efforts exercés par le sol sur les outils, lors du fonctionnement de la roue trancheuse, tendent à plaquer lesdites portions contre le fond de la gorge, donc à conserver cette position, un organe de retenue 23 relie la clavette aux flancs de la gorge. Plus précisément, comme le montre la figure 4, un orifice 24 percé dans chacune des clavettes vient en regard d'orifices coaxiaux 25 et 26, respective­ment pratiqués les uns, 25, dans la partie 5 du flasque 1 et les autres, 26, dans l'anneau 6.In addition, in order to maintain each crown portion 8 in the locking position, and although the direction of the forces exerted by the ground on the tools, during the operation of the slicer wheel, tend to press said portions against the bottom of the groove , therefore to keep this position, a retaining member 23 connects the key to the sides of the groove. More precisely, as shown in FIG. 4, an orifice 24 drilled in each of the keys comes opposite coaxial orifices 25 and 26, respectively made in some, 25, in part 5 of the flange 1 and the others, 26, in the ring 6.

Lorsque la clavette est correctement introduite dans l'espace 18, les orifices 24,25 et 26 sont sensiblement coaxiaux, et l'organe de retenue 23, tel qu'une goupille, est alors enfoncé dans ses orifices pour maintenir et bloquer en position ladite clavette. Chaque clavette est ainsi maintenue dans sa position.When the key is correctly inserted into the space 18, the orifices 24, 25 and 26 are substantially coaxial, and the retaining member 23, such as a pin, is then pressed into its orifices to maintain and lock in position said key. Each key is thus held in its position.

La roue trancheuse est alors prête à fonctionner.The slicer wheel is then ready to operate.

Afin de pouvoir démonter facilement les portions de couronne 8 portant les outils, chaque clavette est pourvue d'une ouverture 29 permettant l'insertion d'un élément dans celle-ci pur éjecter ladite clavette. Préalablement au démontage d'une portion de couronne 8, par exemple pour la remplacer par une autre portion, il est nécessaire de retirer la goupille 23 correspondante.In order to be able to easily disassemble the crown portions 8 carrying the tools, each key is provided with an opening 29 allowing the insertion of an element therein for ejecting said key. Before disassembly of a portion of crown 8, for example to replace it with another portion, it is necessary to remove the corresponding pin 23.

Ensuite, au moyen d'un chasse-clavette s'adaptant dans l'ouverture 29, par exemple un trou oblong, ménagée dans la clavette, celle-ci est éjectée vers l'extérieur de la gorge décoinçant ainsi ladite portion de couronne 8, qui peut alors être retirée, puis remplacée par une autre.Then, by means of a keyhole fitting in the opening 29, for example an oblong hole, formed in the key, the latter is ejected towards the outside of the groove thus unhooking said crown portion 8, which can then be removed and replaced by another.

Les outils 10 fixés sur la face convexe 11 de chacune des portions de couronne amovibles 8 sont soit, des couteaux 31 destinés au creusage des terrains tendres, (terre, sable,...), soit des pics 32 destinés au creusage des terrains durs (pierres, roches,...).The tools 10 fixed on the convex face 11 of each of the removable crown portions 8 are either knives 31 intended for digging soft ground (earth, sand, etc.), or peaks 32 intended for digging hard ground (stones, rocks, ...).

Cependant, selon un autre aspect de l'invention, dans le cas de terrains composites constitués par exemple de roches et de terre, il est particulièrement avantageux (figure 6) de fixer sur la face convexe 12 de chacune des portions de couronne 8 des couteaux 31 et des pics 32 disposés alterna­tivement les uns derrière les autres et de chaque côté du plan de la roue.However, according to another aspect of the invention, in the case of composite terrains made up for example of rocks and earth, it is particularly advantageous (FIG. 6) to fix knives on the convex face 12 of each of the portions of crown 8 31 and peaks 32 arranged alternately one behind the other and on each side of the plane of the wheel.

Dans une variante de réalisation, chaque coin pourrait comprende une face inclinée de butée 17A sur laquelle vient se presser la face inclinée d'extrémité 14A d'une première portion de couronne 8 et une face inclinée de butée 17B, opposée à la précédente, sur laquelle vient se presser le côté latéral 22 de la clavette coinçant une deuxième portion de couronne contiguë à la première portion de couronne.In an alternative embodiment, each corner could include an inclined abutment face 17A on which the inclined end face 14A of a first portion of the crown 8 is pressed and an inclined abutment face 17B, opposite the previous one, on which is pressed against the lateral side 22 of the key wedging a second portion of the crown contiguous to the first portion of the crown.

Claims (10)

1 - Roue trancheuse, du type dans lequel les outils (10) sont montés sur des portions du couronne (8) fixées de façon amovible à la périphérie (3) de ladite roue,
caractérisée en ce que les moyens de fixation de chaque portion de couronne (8) sur la périphérie (3) de ladite roue comportent :
- un premier ensemble de deux faces d'extrémité (14A et 14B), prévues respectivement aux extrémités de ladite portion de couronne (8) ;
- un second ensemble de deux faces de butée (17A et 17B) solidaires de la périphérie (3) de ladite roue et orthogonales au plan de celle-ci ; et
- une clavette (20) en forme de coin pouvant être introduite, depuis d'extérieur de la périphérie de ladite roue en direction de l'intérieur de celle-ci, entre une face d'extrémité (14B) dudit premier ensemble et une face de butée (17B) dudit second ensemble pour appliquer sous pression l'autre (14A) desdites faces d'extrémité dudit premier ensemble contre l'autre (17A) desdites faces de butée dudit second ensemble.1 - Slicer wheel, of the type in which the tools (10) are mounted on portions of the crown (8) removably attached to the periphery (3) of said wheel,
characterized in that the means for fixing each portion of the crown (8) to the periphery (3) of said wheel comprise:
- A first set of two end faces (14A and 14B), provided respectively at the ends of said crown portion (8);
- A second set of two abutment faces (17A and 17B) integral with the periphery (3) of said wheel and orthogonal to the plane thereof; and
- a wedge-shaped key (20) which can be inserted, from outside the periphery of said wheel in the direction of the interior thereof, between an end face (14B) of said first assembly and a face stop (17B) of said second set for applying under pressure the other (14A) of said end faces of said first set against the other (17A) of said stop faces of said second set. 2 - Roue trancheuse selon la revendication 1,
caractérisée en ce que les deux faces d'extrémité (14A et 14B) dudit premier ensemble sont inclinées de façon à converger vers la convexité de ladite portion de couronne (8).2 - Slicer wheel according to claim 1,
characterized in that the two end faces (14A and 14B) of said first assembly are inclined so as to converge towards the convexity of said crown portion (8). 3 - Roue trancheuse selon la revendication 2,
caractérisée en ce que les inclinaisons des deux faces d'extrémité (14A et 14B) dudit premier ensemble sont symé­triquement identiques par rapport à un plan perpendiculaire médian à ladite portion de couronne (8).3 - Slicer wheel according to claim 2,
characterized in that the inclinations of the two end faces (14A and 14B) of said first set are symmetrically identical with respect to a median perpendicular plane to said crown portion (8). 4 - Roue trancheuse selon l'une des revendications 1 à 3,
caractérisée en ce que les deux faces de butée (17A et 17B) dudit second ensemble sont inclinées de façon à converger vers l'extérieur de la périphérie (3) de la roue, l'une (17A) des faces de butée du second ensemble ayant une inclinaison correspondant à celle de l'une (14A) des faces d'extrémité du premier ensemble, tandis que l'autre face de butée (17B) dudit second ensemble a une inclinaison diffé­rente de celle de l'autre face d'extrémité (14B) dudit premier ensemble, l'espace (18) séparant ces deux dernières faces (14B et 17B) s'élargissant vers l'extérieur de la périphérie (3) de la roue.4 - Slicer wheel according to one of claims 1 to 3,
characterized in that the two stop faces (17A and 17B) of said second set are inclined so as to converge towards the outside of the periphery (3) of the wheel, one (17A) of the stop faces of the second set having an inclination corresponding to that of one (14A) of the end faces of the first set, while the other abutment face (17B) of said second set has a different inclination from that of the other end face (14B) of said first assembly, the space (18) separating these last two faces (14B and 17B) widening towards the outside of the periphery (3) of the wheel. 5 - Roue trancheuse selon l'une des revendications 1 et 4,
caractérisée en ce que lesdites faces de butée (17A et 17B) du second ensemble appartiennent chacune à des coins (16A et 16B) solidaires de ladite périphérie (3).5 - Slicer wheel according to one of claims 1 and 4,
characterized in that said abutment faces (17A and 17B) of the second set each belong to corners (16A and 16B) integral with said periphery (3). 6 - Roue trancheuse selon des revendications 1 à 5,
caractérisée en ce que ladite clavette (20) comporte deux côtés latéraux (21 et 22) d'inclinaison correspondant, l'un (21) avec celle de la face d'extrémité (14B) du premier ensemble et l'autre (22) avec celle de la face de butée (17B) du second ensemble.6 - Slicer wheel according to claims 1 to 5,
characterized in that said key (20) has two lateral sides (21 and 22) of corresponding inclination, one (21) with that of the end face (14B) of the first set and the other (22) with that of the abutment face (17B) of the second set. 7 - Roue trancheuse selon l'une des revendications 1 à 6,
caractérisée en ce que ladite clavette (20), une fois introduite dans l'espace (18) délimité entre lesdites faces (14B et 17B), est maintenue en position sur ladite périphérie (3) par une organe de retenue (23).7 - Slicer wheel according to one of claims 1 to 6,
characterized in that said key (20), once introduced into the space (18) delimited between said faces (14B and 17B), is held in position on said periphery (3) by a retaining member (23). 8 - Roue trancheuse selon l'une des revendications 1 à 7,
caractérisée en ce que, dans ladite clavette (20), est ménagée une ouverture (29) dans laquelle est susceptible de s'introduire un élément pour éjecter ladite clavette hors de la périphérie (3), afin de pouvoir démonter ladite portion de couronne (8) portant les outils (10).8 - Slicer wheel according to one of claims 1 to 7,
characterized in that, in said key (20), an opening (29) is formed in which is capable of introducing an element for ejecting said key out of the periphery (3), in order to be able to disassemble said portion of crown ( 8) carrying the tools (10). 9 - Roue trancheuse selon l'une des revendications précédentes,
caractérisée en ce que lesdites portions de couronne (8) portant les outils sont montées dans une gorge annulaire (7) ménagée à la périphérie (3) de la roue, chaque coin (16) comportant une desdites faces de butée (17A, 17B) du second ensemble étant monté solidaire dans ladite gorge (7).9 - Slicer wheel according to one of the preceding claims,
characterized in that said crown portions (8) carrying the tools are mounted in an annular groove (7) formed at the periphery (3) of the wheel, each corner (16) comprising one of said abutment faces (17A, 17B) of the second assembly being mounted integral in said groove (7). 10 - Machine à trancher,
caractérisée en ce qu'elle comporte au moins une roue trancheuse telle que définie sous l'une des revendications 1 à 9.10 - Slicing machine,
characterized in that it comprises at least one slicer wheel as defined in one of claims 1 to 9.
EP87401290A 1986-06-11 1987-06-09 Digging wheel, in particular for digging trenches Expired EP0249551B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401290T ATE48292T1 (en) 1986-06-11 1987-06-09 WHEEL EXCAVATORS, PARTICULARLY FOR DIGING TRENCHES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8608450A FR2600095B1 (en) 1986-06-11 1986-06-11 SLICING WHEEL, PARTICULARLY FOR HOLLOW TRUCKING
FR8608450 1986-06-11

Publications (2)

Publication Number Publication Date
EP0249551A1 true EP0249551A1 (en) 1987-12-16
EP0249551B1 EP0249551B1 (en) 1989-11-29

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Application Number Title Priority Date Filing Date
EP87401290A Expired EP0249551B1 (en) 1986-06-11 1987-06-09 Digging wheel, in particular for digging trenches

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US (1) US4768297A (en)
EP (1) EP0249551B1 (en)
AT (1) ATE48292T1 (en)
DE (1) DE3761055D1 (en)
FR (1) FR2600095B1 (en)

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EP0378485A1 (en) * 1989-01-13 1990-07-18 Soletanche Device for connecting cutting drums to an apparatus used for digging trenches in the soil
WO1991013219A1 (en) * 1990-02-22 1991-09-05 O&K Orenstein & Koppel Ag Fastening of buckets and possibly also the skim coulters on cutting wheels

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US6055750A (en) * 1997-01-13 2000-05-02 Samson Enterprises, Inc. Excavating machine with lift arm assembly
US5943797A (en) * 1997-01-13 1999-08-31 Samson Enterprises, Inc. Excavating machine with conveyor assembly
US5873186A (en) * 1997-01-13 1999-02-23 Yoder; Shaun Lamar Excavating machine with cleaning device
US5809670A (en) * 1997-01-13 1998-09-22 Yoder; Shaun Lamar Excavating machine with grooving device
US6193440B1 (en) 1999-02-26 2001-02-27 Kenneth A. Pidgeon Railroad cable plow apparatus
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US20060117611A1 (en) * 2004-12-08 2006-06-08 Yoder Shaun L Excavating machine for rocky and other soils
US20090007460A1 (en) * 2005-01-21 2009-01-08 Greenlee Joseph G Earth saw
EP1780375B1 (en) * 2005-10-25 2008-02-13 BAUER Maschinen GmbH Cutting tooth for earth working equipment
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US9695573B2 (en) 2009-07-23 2017-07-04 The Charles Machine Works, Inc. Trenching system with hydraulically adjustable hub
US9573295B2 (en) * 2013-05-02 2017-02-21 Surface Preparation Technologies, Llc Cutting tool, mounting bracket, and rotatable cutting head
US20150068072A1 (en) * 2013-09-06 2015-03-12 Advanced Tiling & Trenching, Inc. Trenching wheel with front-mounted cleaner
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FR2422767A1 (en) * 1978-04-10 1979-11-09 Elfgen Apex MILLING TOOL FOR A ROTARY MILLING CYLINDER
US4398607A (en) * 1981-06-08 1983-08-16 Roscoe Brown Corporation Auger with adjustable wear plate

Cited By (5)

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Publication number Priority date Publication date Assignee Title
EP0378485A1 (en) * 1989-01-13 1990-07-18 Soletanche Device for connecting cutting drums to an apparatus used for digging trenches in the soil
FR2641807A1 (en) * 1989-01-13 1990-07-20 Soletanche DEVICE FOR FIXING MILLING DRUMS ON AN APPARATUS FOR HOLLOWING TRENCHES IN THE GROUND
US4991322A (en) * 1989-01-13 1991-02-12 Soletanche Device for affixing cutter drums to an apparatus intended for cutting trenches in the ground
WO1991013219A1 (en) * 1990-02-22 1991-09-05 O&K Orenstein & Koppel Ag Fastening of buckets and possibly also the skim coulters on cutting wheels
US5333399A (en) * 1990-02-22 1994-08-02 O&K Orenstein & Koppel Ag Fastening of the buckets and possibly also the skim cutters on cutting wheels

Also Published As

Publication number Publication date
US4768297A (en) 1988-09-06
ATE48292T1 (en) 1989-12-15
FR2600095A1 (en) 1987-12-18
FR2600095B1 (en) 1989-05-26
EP0249551B1 (en) 1989-11-29
DE3761055D1 (en) 1990-01-04

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