EP2701847B1 - Pre-grinder or a pre-shredder - Google Patents

Pre-grinder or a pre-shredder Download PDF

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Publication number
EP2701847B1
EP2701847B1 EP11708056.4A EP11708056A EP2701847B1 EP 2701847 B1 EP2701847 B1 EP 2701847B1 EP 11708056 A EP11708056 A EP 11708056A EP 2701847 B1 EP2701847 B1 EP 2701847B1
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EP
European Patent Office
Prior art keywords
shredder
frame
grinder
shredding
shredding element
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Not-in-force
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EP11708056.4A
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German (de)
French (fr)
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EP2701847A1 (en
Inventor
Arnaud Becker
Caroline Becker
Catherine Becker
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Luxerd SA
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Luxerd SA
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Publication date
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Publication of EP2701847A1 publication Critical patent/EP2701847A1/en
Application granted granted Critical
Publication of EP2701847B1 publication Critical patent/EP2701847B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/30—Driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/286—Feeding or discharge

Definitions

  • the present invention relates to the field of the treatment of materials of all origins, in particular by shredding using crushers or hammer mills, or the like, and relates to a pre-shredder or pre-shredder.
  • the recovery of metal products from spent objects, especially motor vehicles, by crushers or grinders is generally carried out by introducing the objects into a hammer mill, via a introduction ramp equipped with a crushing drum; said hammer mill tears and shreds the material entering, by interaction with one or more anvils, ejects and / or discharges through screen walls mechanical waste obtained having a given size. This waste is then treated for disposal of unsuitable materials for reuse and sorting of the remaining materials according to their metallurgical characteristics.
  • pre-shredders or pre-shredders which allow a dimensional reduction and a fractionation of objects and very bulky materials, in order to increase the density for transport, storage , or their burial, or their treatment in crushers, crushers or granulators of smaller size and whose feed opening is of smaller section.
  • pre-shredders or pre-shredders existing to date are, however, also large size and high power, usually consisting of one or more rotors slow rotation, rotating in the same direction or opposite direction.
  • the shafts of these rotors are driven by electric or hydraulic motors, either directly or via gearboxes.
  • shredding trees are usually two in number, have a large diameter, namely of the order of 500 to 600 millimeters, each weigh nearly 10 tons and each require for their training a power of the order of 250 kW.
  • the length of the tree line of such machines is generally between 4 meters and 5 meters or more, for a useful working width of the order of 2 meters.
  • shredding tools are mounted, generally by welding on the drive shaft of large section and are not interchangeable.
  • the drive of these shafts, which are mounted at their ends in rolling bearings of large section, which are supported on the side walls of the shredder, is performed by reducing and motor assemblies, which are laterally fixed on both sides. other crankcase of these machines or their feed chute.
  • the engines used are most often hydraulic motors, which are slow, very heavy and mounted freely on the ends of the shafts, or electric or hydraulic motors connected to said shafts via conventional reducers or epicyclic reducers.
  • the drive shafts must be maintained by bearings provided with rings or bearing, the drive or transmission members not being bearing and bearing on the ends of these shafts or being fixed on a frame or walls of the machine.
  • a grinding device according to the preamble of claim 1 constituted, on the one hand, by a drive assembly and, on the other hand, by a grinding chamber removably connected to the drive assembly, the rotors of the grinding chamber being connected to the drive assembly via flanges or flanges.
  • Such device allows, of course, to partially solve the problem of maintenance interventions, but requires the implementation of complete subsets, any intervention on a grinding chamber causing the complete disassembly thereof and its replacement by an identical chamber, no element of the drive subassembly to ensure a direct function for guiding or supporting a rotor shaft, for example.
  • the shafts of the rotors are mounted on specific rolling bearings, their guiding being provided completely independently of the drive assembly. It follows that the implementation of such a device is very expensive, requiring, in fact, the provision of grinding chamber complete, interchangeable, maintenance interventions are then performed in masked time.
  • a rotor rotor assembly in which the cylinder forming the rotor is integral with the rotor of an electric motor, the stator of which is fixed on a traversing axis forming simultaneously the bearing of the cylinder forming the rotor.
  • Such an embodiment makes it possible, of course, to reduce the overall size of the rotor assembly of the crusher and drive motor, but requires large and costly dismantling work, incompatible with the production of low-cost crushers or pre-grinders. and simple and fast implementation.
  • the present invention aims to overcome these disadvantages by providing a pre-shredder or pre-shredder to solve the problems of size and weight and an adaptation to different processing capabilities, while being of simple constitution and a low cost price.
  • the pre-shredder or pre-shredder according to the invention which essentially consists of at least one drive assembly comprising a hydraulic or electric drive motor and a gearbox and at least one shredder assembly connected to the gearbox, is characterized in that the gear unit of the drive unit forms a fastening and support element for at least one shredding element and is constituted by a fixed part, fixed directly on the frame of the pre-assembly.
  • the shredding element being fixed on the movable part of this reducer and being guided and maintained on the chassis, directly by the gearbox of the drive assembly, which provides support functions and rotational guidance of the shredding element.
  • Such a pre-mill or pre-shredder consists essentially of at least one drive assembly 1 comprising a hydraulic or electric drive motor 2 and a gearbox 3 and by at least one shredder element 4 connected to the gearbox 3, and is mounted on a frame 5, a feed chute or other support ( figure 1 ).
  • a pre-mill or pre-shredder can be mounted upstream of a crusher or mill and directly feeds, at its output, said crusher or mill.
  • the gearbox 3 of the drive assembly 1 of this pre-shredder or pre-shredder forms a fastening element and support of at least one shredding element 4, and is constituted by a fixed part 3 ', fixed directly to the frame 5 of the pre-shredder or pre-shredder or on a support or a wall of the latter, and by a movable portion 3 ", the shredding element 4 being fixed on the movable portion 3" of the gear 3 and being guided and held on the frame 5 directly by the gearbox 3 of the drive assembly 1, which provides the functions of support and rotational guidance of the shredding element 4, so that the invention allows the economy of bearings or separate bearings for said shredding element 4, resulting in simplification of assembly and cost reduction.
  • the shredding element 4 is in the form of a tube with a large section wall or a solid shaft provided at at least one end of a flange or a fastening flange 13 on a flange or a corresponding flange 13 "of the mobile part 3" of the gearbox 3 ( Figures 2 and 3 ).
  • the shredding element 4 may in particular be in the form of an interchangeable wear part.
  • the gearbox 3 of the drive assembly 1 is a device known per se, comparable to the mechanisms known as translational gearboxes, of very compact construction and for transmitting very high torque at reduced speeds, while ensuring a high degree of stability. perfect adaptation of speed to reduction ratios.
  • the gearbox 3 of the drive assembly 1, which consists essentially of a fixed part 3 'and a movable part 3 ", is advantageously fixed on the chassis 5 of the pre-shredder or pre-shredder or on a wall or other element of the latter through the fixed part 3 ', on which is mounted the motor 2 which may be of the electric or hydraulic type, preferably the motor 2 will be a hydraulic motor. in the usual manner, by means of bolts, pins, screws or the like, whereby the shredding element 4 and the driving assembly 1 can be mounted on the frame 5, a wall or a another element of the machine without implementation of a sliding or rolling bearing, the support bearing and guide bearing function being provided directly by the drive assembly 1 and in particular by the gearbox 3.
  • the mobile part 3 "of the gearbox 3 is mounted cantilevered on the frame 5 or wall or the like, with respect to the fixed part 3 'of this gear and forms a mounting bracket of the shredding element 4.
  • this tube has a wall thickness sufficient to withstand the forces and is provided, either directly by welding of chipping tools 6, or by means of at least one flange 7, forming a tool holder, of fixed or moving shredding tools and interchangeable
  • chipping tools mounted on such a flange 7 are very easily removable and can therefore be changed as simple wear elements.
  • the invention makes it possible to avoid the provision of specific bearings for shredding elements 4, the gearbox or reducers 3 directly providing this function of holding and rolling bearings.
  • the shredding element 4 according to the invention is thus, in fact, a simple interchangeable piece fixed on a flange or a flange of the movable part 3 "and requiring no specific mounting on rolling bearings and maintenance during a replacement , before their connection to the gearbox 3.
  • the fixed parts 3 'of the gear units 3 may be mounted on eccentric flanges cooperating with reaction arms or the like. It is thus possible to vary the spacing between two elements 4.
  • the pre-shredder or pre-shredder is simply constituted by a drive assembly 1 comprising a hydraulic or electric drive motor 2 and a gearbox 3 and a shredder element 4 provided with shredding tools.
  • the shredding assembly works in the shredding chamber, cantilevered with respect to the frame 5 or to a wall, simply being supported by the gearbox 3.
  • the shredding element 4 is advantageously fixed on the mobile part 3 "of the gearbox 3 via a flange or a flange 13 and is provided at its opposite end with a closure cover (not shown) or an assembly flange 9 fixed by
  • a closure cover not shown
  • an assembly flange 9 fixed by The provision of an assembly flange 9 allows the juxtaposition of a shredding element 4 mounted on one side of a frame or on a wall with a second shredding element 4 mounted on the frame.
  • each shredding element then being connected to each other by bolting or by a form-fitting connection.
  • This bolting is a conventional assembly in the field of mechanics and simply employs bolts passing through two adjacent flanges 9 and is therefore not described or shown in more detail, as is the case with respect to a form-fitting connection which may be jab or the like.
  • the adaptation of said element 4 to different embodiments can be performed quickly and without difficulty.
  • the figure 3 attached drawings represents an alternative embodiment of the invention, in which the pre-shredder or pre-shredder comprises two drive assemblies 1, arranged in opposition on a frame 5 or on a support or a wall of the latter, these drive assemblies 1 cooperating with a single shredding element 4 in the form of a strong wall tube section or a solid shaft provided at its ends with flanges or flanges for mounting on the flanges or flanges of the movable portion 3 "of the reducers 3.
  • a single shredding element 4 in the form of a strong wall tube section or a solid shaft provided at its ends with flanges or flanges for mounting on the flanges or flanges of the movable portion 3 "of the reducers 3.
  • Such an embodiment allows obtaining pre-grinders or pre- shredders, whose working width is comparable to that of traditional pre-shredders or pre-shredders, while being of a much smaller size and weight and a cost
  • the pre-shredder or pre-shredder comprises two drive assemblies 1 each provided with at least one shredding element 4, these drive assemblies and shredder element 4 being connected in parallel to cooperate by interpenetration or not their tools 6, the shredding elements 4 can be rotated in the same direction or in the opposite direction.
  • the latter may comprise a movable flap 10 provided with teeth 11 constituting obstacles between the tools 6 of the chipping element 4, said movable flap 10 being mounted pivotally under or on said pre-shredder or pre-shredder and controlled by pivoting through at least one jack 12.
  • the feed of the pre-shredder or pre-shredder can be significantly improved by the possibility direct intervention on the material to be treated, in particular to promote its progression in the machine or to perform a breaking.
  • a fixed part 3 'corresponding to one end of each shredding element 4 is mounted on the corresponding wall of the frame 5 by securing with a flange or a ring, not shown, sliding in a corresponding housing of said corresponding wall of the frame 5 and maintained against a rotation, while the fixed part 3 'assigned to the opposite end is advantageously secured directly with the corresponding wall.
  • a fixed part 3 'corresponding to one end of each shredding element 4 is mounted on the corresponding wall of the frame 5 by securing with a flange or a ring, not shown, sliding in a corresponding housing of said corresponding wall of the frame 5 and maintained against a rotation, while the fixed part 3 'assigned to the opposite end is advantageously secured directly with the corresponding wall.
  • reaction arm which consists of a connecting rod or the like connected by its ends, respectively, to the corresponding flange or ring and to the frame 5 or to a wall thereof, is of a type known per se and does not require any additional description.
  • FIG 4 the accompanying drawings show an alternative embodiment of the invention, in which the walls of the frame 5 forming the supports of the shredding elements 4 are advantageously mounted reversibly with the side walls of the frame 5 on the support of said frame 5, so as to to allow a reversal of these elements 4 with the walls of the frame 5, about an axis perpendicular to their longitudinal axis.
  • the walls 5 are machined and have fixing means such that they can be mounted on the support of the frame 5, both by their lower edge than by their upper edge.
  • each side wall of the support frame 5 of the shredding elements 4 can be subdivided into a number of plates equal to the number of shredding elements 4, each plate being affected. supporting and guiding one end of a shredding element 4 and being connected to the neighboring plate (s), as well as to the rest of the chassis 5 by means of assembly means by bolting or other.
  • assembly means by bolting or other.
  • chassis side walls 5 subdivided into several plates, each provided with a reduction gear 3, mounted cantilevered, with a shredding element 4, by through its fixed part 3 ', on such a plate
  • at least one plate thus equipped can be mounted in an articulated or sliding manner relative to the adjacent plate and be actuated by a jack in the direction of pivoting or sliding upwards with respect to said adjacent plate.
  • a hinged plate with the chipping element 4 will be arranged upstream of the other plates, namely at the inlet of a pre-grinder or pre-shredder in the direction of a feed chute.
  • a first shredding element 4 at the entrance of a pre-grinding or pre-shredding machine, in order to allow the introduction into this machine of relatively bulky products, for example a dimension greater than the width of a shredding element 4, these products being then crushed during the return to position of the element 4 by tilting or sliding in the operating position of the pivoting plate supporting it.
  • the attached drawings show an alternative embodiment of the invention in which the pre-shredder or pre-shredder comprises at least one shredding element 4 driven by a drive unit 1, this shredding element 4 being mounted on the shredder.
  • the distance of the shredding element 4 with respect to a feed ramp or a feed hopper so that the pre-grinding or pre-shredding can be more or less important, for example depending on the strength of the products to grind.
  • the shredding element 4 may be unique and cooperate with fixed counter-tools or, as shown in figure 5 , can cooperate with a shredding element 4 identical to the same or different direction and speed of rotation, the axis of this second shredding element being able to simultaneously form the pivot axis 50 'of the frame 5' or an eccentric pivot axis chassis 5.
  • the counter-tools possibly cooperating with the chipping element 4 may be in the form of fixed or removable tools secured to movable supports under the action of a jack, so that said tools can be eclipsed to allow direct ejection or direct feeding of a mill downstream.
  • the shredding element 4 provided at the pivoting end of the frame 5 ' has the same effect as a flap or crimper because it compresses the material against a wall preferably of the feed ramp and, because of the pivoting movement of the frame 5 ', it makes it possible to advance the material to be treated towards fixed counter-tools or towards the other shredder element 4.
  • a portion of the feed ramp preferably located under the shredding element 4 pivotally mounted relative to the axis 50 ', is articulated to serve as a non-shredded or non-shredded products ejection valve, this pivoting portion of the feed ramp being actuated by preferably hydraulic cylinders.
  • the chassis side walls 5 can advantageously be subdivided into two symmetrical parts 55 preferably along the axis line or close to this line connecting the axes of the gear units 3 and shredding elements 4 and thus form at the level of each of these axes of the receiving portions of the fixed parts 3 'of said gear units 3, the two parts 55 of the frame 5 being interconnected preferably at one of their ends by a hinge pin 56 and can be rotated preferably relative to each other about this axis 56 via at least one actuating cylinder 57.
  • Such an embodiment allows for assembly and disassembly rapid reduction units 3 - shredding element (s) 4, by simply pivoting a portion 55 of the wall of the frame 5 relative to the other, so that the fixed parts 3 'of the gearbox 3 can be instantly maintained or cleared.
  • One part can be connected to each other by tongue and groove.
  • the bearings 31 'of the fixed parts 3' of the reducers 3, as well as said fixed parts 3 ' may advantageously have a non-circular cylindrical section, namely oval or polygonal ( figure 6 ), so that the maintenance of said fixed parts 3 'of the gear units 3 against a rotation is automatically ensured.
  • the bearings can simultaneously ensure a displacement of the fixed parts 3 ', due to the expansion of the shredding element or elements 4, the limitation of this expansion displacement of the fixed parts 3' being ensured by the prediction on the latter, on either side of the corresponding frame side wall 5 of an abutment stop (not shown).
  • each shredding element 4 with its drive assembly 1 can be adjusted in position in the frame 5 by a simple rotation about the mounting axis on the walls of the frame 5, which will have the effect of causing a moving the shredding elements 4 in the direction of a reconciliation or spacing parallel to the bottom of the feed ramp or to a shredding element 4 neighbor.
  • the shredding element 4 in the form of a tube with a large section wall or a solid shaft may present, in place of the flanges or end flanges, a drive means by interlocking in a correspondingly shaped housing of the free end of the movable part 3 "of the corresponding reducer 3.
  • a drive means by interlocking in a correspondingly shaped housing of the free end of the movable part 3 "of the corresponding reducer 3.
  • Such an embodiment of the shredding element 4 allows its dismounting by simple withdrawal of its drive means from the corresponding housing of the movable portion 3 '.

Description

La présente invention concerne le domaine du traitement de matériaux de toutes origines, en particulier par déchiquetage au moyen de concasseurs ou de broyeurs à marteaux, ou analogues et a pour objet un pré-broyeur ou pré-déchiqueteur.The present invention relates to the field of the treatment of materials of all origins, in particular by shredding using crushers or hammer mills, or the like, and relates to a pre-shredder or pre-shredder.

La récupération de produits métalliques à partir d'objets hors d'usage, en particulier de véhicules automobiles, au moyen de concasseurs ou de broyeurs, s'effectue généralement par introduction des objets dans un broyeur à marteaux, par l'intermédiaire d'une rampe d'introduction équipée d'un tambour écraseur; ledit broyeur à marteaux arrache et déchiquette la matière y entrant, par interaction avec une ou plusieurs enclumes, qui éjecte et/ou évacue à travers des parois criblantes les déchets mécaniques obtenus présentant un calibre déterminé. Ces déchets sont ensuite traités en vue d'une élimination des matières impropres à la réutilisation et d'un tri des matières restantes en fonction de leurs caractéristiques métallurgiques.The recovery of metal products from spent objects, especially motor vehicles, by crushers or grinders, is generally carried out by introducing the objects into a hammer mill, via a introduction ramp equipped with a crushing drum; said hammer mill tears and shreds the material entering, by interaction with one or more anvils, ejects and / or discharges through screen walls mechanical waste obtained having a given size. This waste is then treated for disposal of unsuitable materials for reuse and sorting of the remaining materials according to their metallurgical characteristics.

Le traitement d'objets ou matériaux très encombrants nécessite la mise en oeuvre de broyeurs ou concasseurs de grande dimension et de forte puissance et donc d'un prix de revient, ainsi que d'un coût d'utilisation très élevés.The treatment of objects or very bulky materials requires the implementation of grinders or crushers of large size and high power and therefore a cost, and a very high cost of use.

Ainsi, il a été proposé de mettre en oeuvre des pré-broyeurs ou pré-déchiqueteurs qui permettent une réduction dimensionnelle et un fractionnement des objets et des matériaux très encombrants, afin d'en augmenter la densité en vue de leur transport, de leur stockage, ou de leur enfouissement, ou encore de leur traitement dans des broyeurs, des concasseurs ou des granulateurs de plus faible encombrement et dont l'ouverture d'alimentation est de section plus faible.Thus, it has been proposed to use pre-shredders or pre-shredders which allow a dimensional reduction and a fractionation of objects and very bulky materials, in order to increase the density for transport, storage , or their burial, or their treatment in crushers, crushers or granulators of smaller size and whose feed opening is of smaller section.

Les pré-broyeurs ou pré-déchiqueteurs existant à ce jour sont, cependant, également de dimension importante et de forte puissance, étant généralement constitué d'un ou de plusieurs rotors à rotation lente, tournant dans un même sens ou sens contraire.The pre-shredders or pre-shredders existing to date are, however, also large size and high power, usually consisting of one or more rotors slow rotation, rotating in the same direction or opposite direction.

Ces rotors déchiquettent la matière sous interaction des outils les équipant et la vitesse de rotation des rotors peut être identique ou différente d'un rotor à l'autre. Les arbres de ces rotors sont entraînés par des moteurs électriques ou hydrauliques, soit directement, soit par l'intermédiaire de réducteurs.These rotors shred the material under interaction of the tools equipping them and the speed of rotation of the rotors may be identical or different from one rotor to another. The shafts of these rotors are driven by electric or hydraulic motors, either directly or via gearboxes.

Dans le cas particulier de pré-déchiqueteurs où de pré-broyeurs de carrosseries automobiles, les arbres de déchiquetage sont le plus souvent au nombre de deux, présentent un diamètre important, à savoir de l'ordre de 500 à 600 millimètres, pèsent chacun près de 10 tonnes et nécessitent chacun pour leur entraînement une puissance de l'ordre de 250 kW. La longueur de la ligne d'arbres de telles machines est généralement comprise entre 4 mètres et 5 mètres, voire plus, pour une largeur de travail utile de l'ordre de 2 mètres.In the particular case of pre-shredders or pre-shredders of automobile bodies, shredding trees are usually two in number, have a large diameter, namely of the order of 500 to 600 millimeters, each weigh nearly 10 tons and each require for their training a power of the order of 250 kW. The length of the tree line of such machines is generally between 4 meters and 5 meters or more, for a useful working width of the order of 2 meters.

En outre, les outils de déchiquetage sont montés, généralement par soudage sur l'arbre d'entraînement de forte section et ne sont donc pas interchangeables. L'entraînement de ces arbres, qui sont montés à leurs extrémités dans des paliers à roulement de forte section, qui prennent appui sur les parois latérales du déchiqueteur, est effectué par des ensembles réducteurs et moteurs, qui sont fixés latéralement de part et d'autre du carter de ces machines ou de leur goulotte d'alimentation.In addition, the shredding tools are mounted, generally by welding on the drive shaft of large section and are not interchangeable. The drive of these shafts, which are mounted at their ends in rolling bearings of large section, which are supported on the side walls of the shredder, is performed by reducing and motor assemblies, which are laterally fixed on both sides. other crankcase of these machines or their feed chute.

Le montage des ces équipements de grandes dimensions, à savoir réducteurs et moteurs, à l'extérieur de ces machines a pour résultat un encombrement important de celles-ci, incompatible avec une installation de traitement de faible capacité, qui doit, par essence, être mobile en vue d'une utilisation éventuelle sur des sites différents.The mounting of these large equipment, namely gearboxes and motors, outside these machines results in a large bulk of them, incompatible with a low capacity processing facility, which must, in essence, be mobile for possible use on different sites.

De plus, les moteurs mis en oeuvre sont le plus souvent des moteurs hydrauliques, qui sont lents, très lourds et montés librement sur les extrémités des arbres, soit encore des moteurs électriques ou hydrauliques reliés auxdits arbres par l'intermédiaire de réducteurs habituels ou de réducteurs épicycloïdaux. Par ailleurs, dans tous les cas, les arbres d'entraînement doivent être maintenus par des paliers munis de bagues ou de roulement, les organes moteurs ou de transmission n'étant pas porteurs et prenant appui sur les extrémités de ces arbres ou étant fixés sur un cadre ou des parois de la machine.In addition, the engines used are most often hydraulic motors, which are slow, very heavy and mounted freely on the ends of the shafts, or electric or hydraulic motors connected to said shafts via conventional reducers or epicyclic reducers. Furthermore, in all cases, the drive shafts must be maintained by bearings provided with rings or bearing, the drive or transmission members not being bearing and bearing on the ends of these shafts or being fixed on a frame or walls of the machine.

La réalisation de tels broyeurs ou pré-déchiqueteurs est très onéreuse et les machines ainsi réalisées sont très encombrantes et très lourdes.The production of such grinders or pre-shredders is very expensive and the machines thus produced are very bulky and very heavy.

Par ailleurs, il est connu, par WO-A-0185346 , un dispositif de broyage selon le préambule de la revendication 1 constitué, d'une part, par un ensemble d'entraînement et, d'autre part, par une chambre de broyage reliée de manière démontable à l'ensemble d'entraînement, les rotors de la chambre de broyage étant reliés à l'ensemble d'entraînement par l'intermédiaire de flasques ou brides. Un tel dispositif permet, certes, de résoudre partiellement le problème des interventions de maintenance, mais nécessite la mise en oeuvre de sous-ensembles complets, toute intervention sur une chambre de broyage entraînant le démontage complet de celle-ci et son remplacement par une chambre identique, aucun élément du sous-ensemble d'entraînement ne permettant d'assurer une fonction directe de guidage ou de support d'un arbre de rotor, par exemple.Moreover, he is known by WO-A-0185346 , a grinding device according to the preamble of claim 1 constituted, on the one hand, by a drive assembly and, on the other hand, by a grinding chamber removably connected to the drive assembly, the rotors of the grinding chamber being connected to the drive assembly via flanges or flanges. Such device allows, of course, to partially solve the problem of maintenance interventions, but requires the implementation of complete subsets, any intervention on a grinding chamber causing the complete disassembly thereof and its replacement by an identical chamber, no element of the drive subassembly to ensure a direct function for guiding or supporting a rotor shaft, for example.

En effet, les arbres des rotors sont montés sur des paliers à roulement spécifiques, leur guidage étant assuré de manière totalement autonome de l'ensemble d'entraînement. Il en résulte que la mise en oeuvre d'un tel dispositif est très onéreuse, nécessitant, en fait, la prévision de chambre de broyage complètes, interchangeables, les interventions de maintenance étant alors réalisées en temps masqué.Indeed, the shafts of the rotors are mounted on specific rolling bearings, their guiding being provided completely independently of the drive assembly. It follows that the implementation of such a device is very expensive, requiring, in fact, the provision of grinding chamber complete, interchangeable, maintenance interventions are then performed in masked time.

On connaît également, par FR-A-2 431 326 , un montage de rotor de broyeur, dans lequel le cylindre formant le rotor est solidaire du rotor d'un moteur électrique, dont le stator est fixé sur un axe traversant formant simultanément le palier du cylindre formant le rotor. Un tel mode de réalisation permet, certes, de réduire l'encombrement de l'ensemble rotor du broyeur et moteur d'entraînement, mais nécessite des travaux de démontage importants et coûteux, incompatibles avec une réalisation de broyeurs ou pré-broyeurs de faible coût et de mise en oeuvre simple et rapide.We also know, by FR-A-2,431,326 , a rotor rotor assembly, in which the cylinder forming the rotor is integral with the rotor of an electric motor, the stator of which is fixed on a traversing axis forming simultaneously the bearing of the cylinder forming the rotor. Such an embodiment makes it possible, of course, to reduce the overall size of the rotor assembly of the crusher and drive motor, but requires large and costly dismantling work, incompatible with the production of low-cost crushers or pre-grinders. and simple and fast implementation.

La présente invention a pour but de pallier ces inconvénients en proposant un pré-broyeur ou pré-déchiqueteur permettant de résoudre les problèmes d'encombrement et de poids et une adaptation à des capacités de traitement différentes, tout en étant de constitution simple et d'un faible prix de revient.The present invention aims to overcome these disadvantages by providing a pre-shredder or pre-shredder to solve the problems of size and weight and an adaptation to different processing capabilities, while being of simple constitution and a low cost price.

A cet effet, le pré-broyeur ou pré-déchiqueteur conforme à l'invention, qui est essentiellement constitué par au moins un ensemble d'entraînement comportant un moteur d'entraînement hydraulique ou électrique et un réducteur et par au moins un ensemble de déchiquetage relié au réducteur, est caractérisé en ce que le réducteur de l'ensemble d'entraînement forme un élément de fixation et de support d'au moins un élément de déchiquetage et est constitué par une partie fixe, fixée directement sur le châssis du pré-broyeur ou pré-déchiqueteur ou sur un support ou une paroi de ce dernier, et par une partie mobile, l'élément de déchiquetage étant fixé sur la partie mobile de ce réducteur et étant guidé et maintenu sur le châssis, directement par le réducteur de l'ensemble d'entraînement, qui assure les fonctions de support et de guidage en rotation de l'élément de déchiquetage.For this purpose, the pre-shredder or pre-shredder according to the invention, which essentially consists of at least one drive assembly comprising a hydraulic or electric drive motor and a gearbox and at least one shredder assembly connected to the gearbox, is characterized in that the gear unit of the drive unit forms a fastening and support element for at least one shredding element and is constituted by a fixed part, fixed directly on the frame of the pre-assembly. grinder or pre-shredder or on a support or a wall thereof, and by a movable part, the shredding element being fixed on the movable part of this reducer and being guided and maintained on the chassis, directly by the gearbox of the drive assembly, which provides support functions and rotational guidance of the shredding element.

L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à des modes de réalisation préférés, donnés à titre d'exemples non limitatifs, et expliqués avec référence aux dessins schématiques annexés, dans lesquels :

  • la figure 1 est une vue en perspective d'un pré-broyeur ou pré-déchiqueteur conforme à invention ;
  • la figure 2 est une vue partielle en plan et en coupe représentant un premier mode de réalisation d'un pré-broyeur ou pré-déchiqueteur conforme à l'invention ;
  • la figure 3 est une vue analogue à celle de la figure 2 d'une variante de réalisation de l'invention ;
  • la figure 4 est une vue partielle à plus grande échelle, analogue à celle de la figure 1, représentant le pré-broyeur ou pré-déchiqueteur ;
  • la figure 5 est une vue en élévation latérale d'une variante de réalisation du pré-broyeur ou pré-déchiqueteur selon les figures 1 et 4, et
  • la figure 6 est une vue analogue à celle de la figure 5 d'une autre variante de réalisation de l'invention.
  • La figure 1 des dessins annexés représente, à titre d'exemple, un pré-broyeur ou pré-déchiqueteur destiné à être mis en oeuvre dans le domaine du traitement de matériaux de toutes origines, en particulier par déchiquetage au moyen de concasseurs ou de broyeurs à marteaux, ou analogues.
The invention will be better understood, thanks to the following description, which refers to preferred embodiments, given by way of non-limiting examples, and explained with reference to the appended diagrammatic drawings, in which:
  • the figure 1 is a perspective view of a pre-shredder or pre-shredder according to the invention;
  • the figure 2 is a partial plan and sectional view showing a first embodiment of a pre-shredder or pre-shredder according to the invention;
  • the figure 3 is a view similar to that of the figure 2 an alternative embodiment of the invention;
  • the figure 4 is a partial view on a larger scale, similar to that of the figure 1 , representing the pre-shredder or pre-shredder;
  • the figure 5 is a side elevational view of an alternative embodiment of the pre-shredder or pre-shredder according to the figures 1 and 4 , and
  • the figure 6 is a view similar to that of the figure 5 of another embodiment of the invention.
  • The figure 1 By way of example, the appended drawings represent a pre-shredder or pre-shredder intended to be used in the field of the treatment of materials of all origins, in particular by shredding by means of crushers or hammer mills. or the like.

Un tel pré-broyeur ou pré-déchiqueteur est essentiellement constitué par au moins un ensemble 1 d'entraînement comportant un moteur d'entraînement hydraulique ou électrique 2 et un réducteur 3 et par au moins un élément de déchiquetage 4 relié au réducteur 3, et est monté sur un châssis 5, une goulotte d'alimentation ou un autre support (figure 1). De manière connue, un tel pré-broyeur ou pré-déchiqueteur peut être monté en amont d'un concasseur ou broyeur et alimente directement, à sa sortie, ledit concasseur ou broyeur.Such a pre-mill or pre-shredder consists essentially of at least one drive assembly 1 comprising a hydraulic or electric drive motor 2 and a gearbox 3 and by at least one shredder element 4 connected to the gearbox 3, and is mounted on a frame 5, a feed chute or other support ( figure 1 ). In known manner, such a pre-mill or pre-shredder can be mounted upstream of a crusher or mill and directly feeds, at its output, said crusher or mill.

Conformément à l'invention le réducteur 3 de l'ensemble d'entraînement 1 de ce pré-broyeur ou pré-déchiqueteur forme un élément de fixation et de support d'au moins un élément de déchiquetage 4, et est constitué par une partie fixe 3', fixée directement sur le châssis 5 du pré-broyeur ou pré-déchiqueteur ou sur un support ou une paroi de ce dernier, et par une partie mobile 3", l'élément de déchiquetage 4 étant fixé sur la partie mobile 3" de ce réducteur 3 et étant guidé et maintenu sur le châssis 5, directement par le réducteur 3 de l'ensemble d'entraînement 1, qui assure les fonctions de support et de guidage en rotation de l'élément de déchiquetage 4, de sorte que l'invention permet de réaliser l'économie de paliers ou de roulements séparés pour ledit élément de déchiquetage 4, ce qui entraîne une simplification du montage et une réduction des coûts.According to the invention the gearbox 3 of the drive assembly 1 of this pre-shredder or pre-shredder forms a fastening element and support of at least one shredding element 4, and is constituted by a fixed part 3 ', fixed directly to the frame 5 of the pre-shredder or pre-shredder or on a support or a wall of the latter, and by a movable portion 3 ", the shredding element 4 being fixed on the movable portion 3" of the gear 3 and being guided and held on the frame 5 directly by the gearbox 3 of the drive assembly 1, which provides the functions of support and rotational guidance of the shredding element 4, so that the invention allows the economy of bearings or separate bearings for said shredding element 4, resulting in simplification of assembly and cost reduction.

L'élément de déchiquetage 4 est sous forme d'un tube à paroi de forte section ou d'un arbre plein muni à au moins une extrémité d'un flasque ou d'une bride de fixation 13 sur un flasque ou une bride correspondante 13" de la partie mobile 3" du réducteur 3 (figures 2 et 3). L'élément de déchiquetage 4 peut notamment être sous forme d'une pièce d'usure interchangeable.The shredding element 4 is in the form of a tube with a large section wall or a solid shaft provided at at least one end of a flange or a fastening flange 13 on a flange or a corresponding flange 13 "of the mobile part 3" of the gearbox 3 ( Figures 2 and 3 ). The shredding element 4 may in particular be in the form of an interchangeable wear part.

Le réducteur 3 de l'ensemble d'entraînement 1 est un dispositif connu en soi, comparable aux mécanismes connus sous la dénomination réducteurs de translation, de construction très compacte et permettant de transmettre des couples très élevés à des vitesses réduites, tout en garantissant une adaptation parfaite de la vitesse aux rapports de réduction.The gearbox 3 of the drive assembly 1 is a device known per se, comparable to the mechanisms known as translational gearboxes, of very compact construction and for transmitting very high torque at reduced speeds, while ensuring a high degree of stability. perfect adaptation of speed to reduction ratios.

Le réducteur 3 de l'ensemble d'entraînement 1, qui est essentiellement constitué par une partie fixe 3' et par une partie mobile 3", est avantageusement fixé sur le châssis 5 du pré-broyeur ou pré-déchiqueteur ou sur une paroi ou autre élément de ce dernier par l'intermédiaire de la partie fixe 3', sur laquelle est monté le moteur 2 qui peut être de type électrique ou hydraulique. De préférence, le moteur 2 sera un moteur hydraulique. Une telle fixation du réducteur 3 peut être réalisée, de manière usuelle, par l'intermédiaire de boulons, de broches, de vis ou analogues. Ainsi, l'élément de déchiquetage 4 et l'ensemble d'entraînement 1 peuvent être montés sur le châssis 5, une paroi ou un autre élément de la machine sans mise en oeuvre d'un palier lisse ou à roulement, la fonction de paliers de support et de guidage étant assurée directement par l'ensemble d'entraînement 1 et en particulier par le réducteur 3. Il en résulte une simplification considérable du montage de l'élément de déchiquetage 4 par rapport aux dispositifs connus à ce jour, notamment par WO-A-0185346 et par FR-A-2 431 326 , et en particulier en ce qui concerne les coûts de réalisation.The gearbox 3 of the drive assembly 1, which consists essentially of a fixed part 3 'and a movable part 3 ", is advantageously fixed on the chassis 5 of the pre-shredder or pre-shredder or on a wall or other element of the latter through the fixed part 3 ', on which is mounted the motor 2 which may be of the electric or hydraulic type, preferably the motor 2 will be a hydraulic motor. in the usual manner, by means of bolts, pins, screws or the like, whereby the shredding element 4 and the driving assembly 1 can be mounted on the frame 5, a wall or a another element of the machine without implementation of a sliding or rolling bearing, the support bearing and guide bearing function being provided directly by the drive assembly 1 and in particular by the gearbox 3. This results in a simplification consid map of the assembly of the shredding element 4 with respect to the devices known to date, in particular by WO-A-0185346 and by FR-A-2,431,326 , and in particular with regard to the costs of implementation.

Selon une caractéristique de l'invention, la partie mobile 3" du réducteur 3 est montée à porte-à-faux sur le châssis 5 ou paroi ou autre, par rapport à la partie fixe 3' de ce réducteur et forme un support de fixation de l'élément de déchiquetage 4. Dans le cas de mise en oeuvre d'un tube à paroi de forte section, ce tube a une épaisseur de paroi suffisante pour résister aux efforts et est muni, soit directement par soudure d'outils de déchiquetage 6, soit par l'intermédiaire d'au moins une bride 7, formant porte-outil, d'outils de déchiquetage fixes ou mobiles et interchangeables. Ainsi, les outils de déchiquetage montés sur une telle bride 7 sont très facilement démontables et peuvent donc être changés comme de simples éléments d'usure.According to a characteristic of the invention, the mobile part 3 "of the gearbox 3 is mounted cantilevered on the frame 5 or wall or the like, with respect to the fixed part 3 'of this gear and forms a mounting bracket of the shredding element 4. In the case of implementation of a tube with a large section wall, this tube has a wall thickness sufficient to withstand the forces and is provided, either directly by welding of chipping tools 6, or by means of at least one flange 7, forming a tool holder, of fixed or moving shredding tools and interchangeable Thus, chipping tools mounted on such a flange 7 are very easily removable and can therefore be changed as simple wear elements.

Par ailleurs, du fait de ce montage en porte à faux du réducteur 3 (figure 2) ou du montage du réducteur 3 de chaque côté du châssis 5 (figure 3), l'invention permet d'éviter la prévision de paliers spécifiques pour les éléments de déchiquetage 4, le ou les réducteurs 3 assurant directement cette fonction de paliers de maintien et de roulement. L'élément de déchiquetage 4 selon invention est ainsi, en fait, une simple pièce interchangeable fixée sur un flasque ou une bride de la partie mobile 3" et ne nécessitant aucun montage spécifique sur des paliers de roulement et de maintien lors d'un remplacement, avant leur liaison au réducteur 3.Moreover, because of this cantilevered mounting of the gearbox 3 ( figure 2 ) or the mounting of the gearbox 3 on each side of the frame 5 ( figure 3 ), the invention makes it possible to avoid the provision of specific bearings for shredding elements 4, the gearbox or reducers 3 directly providing this function of holding and rolling bearings. The shredding element 4 according to the invention is thus, in fact, a simple interchangeable piece fixed on a flange or a flange of the movable part 3 "and requiring no specific mounting on rolling bearings and maintenance during a replacement , before their connection to the gearbox 3.

Selon une variante de réalisation de l'invention, non représentée aux dessins annexés, les parties fixes 3' des réducteurs 3 peuvent être montées sur des brides à excentrique coopérant avec des bras de réaction ou analogues. Il est ainsi possible de faire varier l'écartement entre deux éléments 4.According to an alternative embodiment of the invention, not shown in the accompanying drawings, the fixed parts 3 'of the gear units 3 may be mounted on eccentric flanges cooperating with reaction arms or the like. It is thus possible to vary the spacing between two elements 4.

Dans le mode de réalisation représenté à la figure 2 des dessins annexés, le pré-broyeur ou pré-déchiqueteur est simplement constitué par un ensemble 1 d'entraînement comportant un moteur d'entraînement hydraulique ou électrique 2 et un réducteur 3 et par un élément de déchiquetage 4 muni d'outils de déchiquetage. Dans un tel cas, l'ensemble de déchiquetage travaille dans l'enceinte de déchiquetage, en porte-à-faux par rapport au châssis 5 ou à une paroi, en étant simplement supporté par le réducteur 3. Il est également possible de monter, entre la partie mobile 3" du réducteur 3 et l'élément de déchiquetage 4 un ensemble porte-outils de broyage ou de déchiquetage sous forme de flasques munis d'outils périphériques mobiles ou fixes.In the embodiment shown at figure 2 In the accompanying drawings, the pre-shredder or pre-shredder is simply constituted by a drive assembly 1 comprising a hydraulic or electric drive motor 2 and a gearbox 3 and a shredder element 4 provided with shredding tools. In such a case, the shredding assembly works in the shredding chamber, cantilevered with respect to the frame 5 or to a wall, simply being supported by the gearbox 3. It is also possible to mount, between the mobile part 3 "of the gearbox 3 and the shredding element 4 a grinding or shredding tool holder in the form of flanges provided with mobile or fixed peripheral tools.

Conformément à une autre variante de réalisation de l'invention, l'élément de déchiquetage 4 est avantageusement fixé sur la partie mobile 3" du réducteur 3 par l'intermédiaire d'un flasque ou d'une bride 13 et est muni à son extrémité opposée d'un couvercle de fermeture (non représenté) ou d'une bride d'assemblage 9, fixé par vissage, par boulonnage ou par soudage. La prévision d'une bride d'assemblage 9 permet la juxtaposition d'un élément de déchiquetage 4 monté sur un côté d'un châssis ou sur une paroi avec un deuxième élément de déchiquetage 4 monté sur le côté opposé du châssis ou sur la paroi opposée, les extrémités libres de chaque élément de déchiquetage étant alors reliées entre elles par boulonnage ou par un assemblage par coopération de forme. Un tel boulonnage relève d'un assemblage classique dans le domaine de la mécanique et met simplement en oeuvre des boulons traversant deux brides adjacentes 9 et n'est donc pas décrit ni représenté plus en détail. Il en est de même en ce qui concerne un assemblage par coopération de forme qui peut être du type à crabots ou analogues.According to another embodiment of the invention, the shredding element 4 is advantageously fixed on the mobile part 3 "of the gearbox 3 via a flange or a flange 13 and is provided at its opposite end with a closure cover (not shown) or an assembly flange 9 fixed by The provision of an assembly flange 9 allows the juxtaposition of a shredding element 4 mounted on one side of a frame or on a wall with a second shredding element 4 mounted on the frame. opposite side of the frame or on the opposite wall, the free ends of each shredding element then being connected to each other by bolting or by a form-fitting connection.This bolting is a conventional assembly in the field of mechanics and simply employs bolts passing through two adjacent flanges 9 and is therefore not described or shown in more detail, as is the case with respect to a form-fitting connection which may be jab or the like.

Ainsi, deux éléments de déchiquetage 4, juxtaposés et assemblés par leur extrémité libre, permettent l'obtention d'un moyen de déchiquetage de puissance double de celle d'un seul ensemble et permettant donc de traiter des pièces plus volumineuses.Thus, two shredding elements 4, juxtaposed and assembled by their free end, make it possible to obtain a double power shredding means of that of a single assembly and thus making it possible to process larger pieces.

Du fait que la bride 9 ou le couvercle sont fixés sur l'élément de déchiquetage 4 de manière amovible, l'adaptation dudit élément 4 à des modes de réalisation différents peut être effectuée rapidement et sans difficulté.Because the flange 9 or cover is fixed on the chipping element 4 removably, the adaptation of said element 4 to different embodiments can be performed quickly and without difficulty.

De même, il est envisageable de monter deux pré-broyeurs ou pré-déchiqueteurs de manière juxtaposée, sans qu'ils soient reliés entre eux, de sorte que leur fonctionnement peut être totalement indépendant.Similarly, it is conceivable to mount two pre-grinders or pre-shredders in a juxtaposed manner, without them being interconnected, so that their operation can be completely independent.

Il est également possible de monter plusieurs éléments de déchiquetage 4 en série entre deux réducteurs 3, afin d'obtenir une largeur de travail très importante. Bien entendu, dans un tel cas, il conviendra de choisir des ensembles d'entraînement 1, ainsi que des supports 5 de ces derniers, dimensionnés en conséquence. Dans un tel cas, il est également possible de disposer entre les éléments de déchiquetage 4 en série des ensembles porte-outils de broyage ou de déchiquetage, sous forme de flasques munis d'outils périphériques mobiles ou fixes. Ainsi, les outils usagés de ces ensembles peuvent être facilement et rapidement interchangés par démontage et remontage de sous ensembles entiers.It is also possible to mount several shredding elements 4 in series between two reducers 3, in order to obtain a very large working width. Of course, in such a case, it will be necessary to choose drive units 1, and supports 5 thereof, dimensioned accordingly. In such a case, it is also possible to arrange grinding or shredding tool sets between the shredding elements 4 in series, in the form of flanges provided with mobile or fixed peripheral tools. Thus, used tools of these sets can be easily and quickly interchanged by disassembly and reassembly of whole subsets.

La figure 3 des dessins annexés représente une variante de réalisation de l'invention, dans laquelle le pré-broyeur ou pré-déchiqueteur comporte deux ensembles 1 d'entraînement, disposés en opposition sur un châssis 5 ou sur un support ou une paroi de ce dernier, ces ensembles 1 d'entraînement coopérant avec un élément de déchiquetage 4 unique sous forme d'un tube à paroi de forte section ou d'un arbre plein muni à ses extrémités de flasques ou brides destinés à son montage sur des flasques ou brides de la partie mobile 3" des réducteurs 3. Un tel mode de réalisation permet l'obtention de pré-broyeurs ou pré-déchiqueteurs, dont la largeur de travail est comparable à celle des pré-broyeurs ou pré-déchiqueteurs traditionnels, tout en étant d'un encombrement et d'un poids très nettement inférieurs et d'un prix de revient également nettement inférieur.The figure 3 attached drawings represents an alternative embodiment of the invention, in which the pre-shredder or pre-shredder comprises two drive assemblies 1, arranged in opposition on a frame 5 or on a support or a wall of the latter, these drive assemblies 1 cooperating with a single shredding element 4 in the form of a strong wall tube section or a solid shaft provided at its ends with flanges or flanges for mounting on the flanges or flanges of the movable portion 3 "of the reducers 3. Such an embodiment allows obtaining pre-grinders or pre- shredders, whose working width is comparable to that of traditional pre-shredders or pre-shredders, while being of a much smaller size and weight and a cost also significantly lower.

Dans le mode de réalisation de l'invention selon la figure 1 des dessins annexés, le pré-broyeur ou pré-déchiqueteur comporte deux ensembles 1 d'entraînement muni chacun d'au moins un élément de déchiquetage 4, ces ensembles d'entraînement et élément de déchiquetage 4 étant montés en parallèle pour coopérer par interpénétration ou non de leurs outils 6, les éléments de déchiquetage 4 pouvant être entraînés en rotation dans le même sens ou en sens inverse.In the embodiment of the invention according to figure 1 In the appended drawings, the pre-shredder or pre-shredder comprises two drive assemblies 1 each provided with at least one shredding element 4, these drive assemblies and shredder element 4 being connected in parallel to cooperate by interpenetration or not their tools 6, the shredding elements 4 can be rotated in the same direction or in the opposite direction.

Enfin, selon une autre caractéristique de l'invention et comme le montre la figure 1 des dessins annexés, pour améliorer le travail du pré-broyeur ou pré-déchiqueteur, ce dernier peut comporter un volet mobile 10 muni de dents 11 constituant des obstacles entre les outils 6 de l'élément de déchiquetage 4, ledit volet mobile 10 étant monté de manière pivotante sous ou sur ledit pré-broyeur ou pré-déchiqueteur et commandé en pivotement par l'intermédiaire d'au moins un vérin 12. Ainsi, l'alimentation du pré-broyeur ou pré-déchiqueteur peut être notablement améliorée par la possibilité d'intervention directe sur la matière à traiter, en particulier pour favoriser sa progression dans la machine ou pour effectuer un débourrage.Finally, according to another characteristic of the invention and as shown by figure 1 appended drawings, to improve the work of the pre-shredder or pre-shredder, the latter may comprise a movable flap 10 provided with teeth 11 constituting obstacles between the tools 6 of the chipping element 4, said movable flap 10 being mounted pivotally under or on said pre-shredder or pre-shredder and controlled by pivoting through at least one jack 12. Thus, the feed of the pre-shredder or pre-shredder can be significantly improved by the possibility direct intervention on the material to be treated, in particular to promote its progression in the machine or to perform a breaking.

De préférence, dans le cas de mise en oeuvre d'éléments de déchiquetage 4 reliés à leurs deux extrémités à des réducteurs 3, dont les parties fixes 3' sont fixées chacune sur une paroi du châssis 5 du pré-broyeur ou pré-déchiqueteur, une partie fixe 3' correspondant à une extrémité de chaque élément de déchiquetage 4 est montée sur la paroi correspondante du châssis 5 par solidarisation avec une bride ou une bague, non représentée, coulissante dans un logement correspondant de ladite paroi correspondante du châssis 5 et maintenue contre une rotation, tandis que la partie fixe 3' affectée à l'extrémité opposée est avantageusement solidarisée directement avec la paroi correspondante. Ainsi, il est possible d'assurer la libre dilatation de l'arbre de chaque élément de déchiquetage 4.Preferably, in the case of implementation of shredding elements 4 connected at both ends to reducers 3, whose fixed parts 3 'are each fixed to a wall of the frame 5 of the pre-shredder or pre-shredder, a fixed part 3 'corresponding to one end of each shredding element 4 is mounted on the corresponding wall of the frame 5 by securing with a flange or a ring, not shown, sliding in a corresponding housing of said corresponding wall of the frame 5 and maintained against a rotation, while the fixed part 3 'assigned to the opposite end is advantageously secured directly with the corresponding wall. Thus, it is possible to ensure the free expansion of the shaft of each shredding element 4.

Le maintien contre une rotation des brides ou bagues coulissantes solidarisées avec la partie fixe 3' est assuré par l'intermédiaire de clavettes (non représentées) coopérant avec des gorges longitudinales correspondantes prévues dans les paliers ménagés dans la paroi du châssis 5, ainsi que sur lesdites brides ou bagues coulissantes, ou encore par l'intermédiaire de bras de réaction reliant lesdites brides ou bagues chacune à un point fixe prévu sur ladite paroi du châssis 5. Un tel bras de réaction, qui consiste en une bielle ou analogue reliée par ses extrémités, respectivement, à la bride ou bague correspondante et au châssis 5 ou à une paroi de ce dernier, est de type connu en soi et ne nécessite pas de description complémentaire. Ainsi, une liberté de translation de la bride ou de la bague coulissante est permise, sa rotation restant impossible du fait de son rattachement à la paroi du châssis 5 ou au châssis 5 par l'intermédiaire du bras de réaction.Holding against rotation of the flanges or sliding rings secured to the fixed part 3 'is ensured by means of keys (not shown) cooperating with corresponding longitudinal grooves provided in the bearings provided in the wall of the frame 5, as well as on said flanges or sliding rings, or else via reaction arms connecting said flanges or rings each to a fixed point provided on said wall of the frame 5. Such a reaction arm, which consists of a connecting rod or the like connected by its ends, respectively, to the corresponding flange or ring and to the frame 5 or to a wall thereof, is of a type known per se and does not require any additional description. Thus, freedom of translation of the flange or the sliding ring is permitted, its rotation remaining impossible because of its attachment to the wall of the frame 5 or the frame 5 via the reaction arm.

La figure 4 des dessins annexés représente une variante de réalisation de l'invention, dans laquelle les parois du châssis 5 formant les supports des éléments de déchiquetage 4 sont avantageusement montées de manière réversible avec les parois latérales du châssis 5 sur le support dudit châssis 5, de manière à permettre un retournement de ces éléments 4 avec les parois du châssis 5, autour d'un axe perpendiculaire à leur axe longitudinal. A cet effet, les parois 5 sont usinées et présentent des moyens de fixation tels qu'elles peuvent être montées sur le support du châssis 5, aussi bien par leur bord inférieur que par leur bord supérieur.The figure 4 the accompanying drawings show an alternative embodiment of the invention, in which the walls of the frame 5 forming the supports of the shredding elements 4 are advantageously mounted reversibly with the side walls of the frame 5 on the support of said frame 5, so as to to allow a reversal of these elements 4 with the walls of the frame 5, about an axis perpendicular to their longitudinal axis. For this purpose, the walls 5 are machined and have fixing means such that they can be mounted on the support of the frame 5, both by their lower edge than by their upper edge.

Ainsi, après un démontage des parois latérales de support des éléments 4 du châssis 5, il est possible d'effectuer un retournement de l'ensemble des parties reliées aux éléments 4, de manière à réaliser un montage inversé desdits éléments 4 et de leurs moyens d'entraînement, de sorte que des outils déchiquetage 6, sous forme d'outils réversibles ou à deux faces actives opposées, peuvent être mis en oeuvre.Thus, after disassembly of the side support walls of the elements 4 of the frame 5, it is possible to perform a reversal of all the parts connected to the elements 4, so as to perform an inverted mounting of said elements 4 and their means. drive, so that shredding tools 6, in the form of reversible tools or two opposite active faces, can be implemented.

Selon une autre caractéristique de l'invention, non représentée aux dessins annexés, chaque paroi latérale du châssis 5 de support des éléments de déchiquetage 4 peut être subdivisée en un nombre de plaque égales au nombre d'éléments de déchiquetage 4, chaque plaque étant affectée au support et au guidage d'une extrémité d'un élément de déchiquetage 4 et étant reliée à la ou aux plaques voisines, ainsi qu'au reste du châssis 5 par l'intermédiaire de moyens d'assemblage par boulonnage ou autres. Ainsi, il est possible d'effectuer un retournement individuel de chaque élément de déchiquetage 4, indépendamment de l'élément 4 voisin, comme décrit plus haut.According to another characteristic of the invention, not shown in the accompanying drawings, each side wall of the support frame 5 of the shredding elements 4 can be subdivided into a number of plates equal to the number of shredding elements 4, each plate being affected. supporting and guiding one end of a shredding element 4 and being connected to the neighboring plate (s), as well as to the rest of the chassis 5 by means of assembly means by bolting or other. Thus, it is possible to perform an individual reversal of each shredding element 4, independently of the neighboring element 4, as described above.

Conformément à une autre caractéristique de l'invention, dans le cas de mise en oeuvre de parois latérales de châssis 5 subdivisées en plusieurs plaques, munies chacune d'un réducteur 3, monté en porte à faux, avec un élément de déchiquetage 4, par l'intermédiaire de sa partie fixe 3', sur une telle plaque, au moins une plaque ainsi équipée peut être montée de manière articulée ou à coulissement par rapport à la plaque voisine et être actionnée par un vérin dans le sens d'un pivotement ou d'un coulissement vers le haut par rapport à ladite plaque voisine. De préférence, une telle plaque articulée avec l'élément de déchiquetage 4 sera disposée en amont des autres plaques, à savoir à l'entrée d'un pré-broyeur ou pré-déchiqueteur en direction d'une goulotte d'alimentation. Ainsi, il est possible de dégager un premier élément de déchiquetage 4 à l'entrée d'une machine de pré-broyage ou de pré-déchiquetage, afin de permettre l'introduction dans cette machine de produits relativement encombrants, par exemple d'une dimension supérieure à la largeur d'un élément de déchiquetage 4, ces produits étant alors écrasés lors du retour en position de l'élément 4 par basculement ou coulissement en position de service de la plaque pivotant le supportant.According to another characteristic of the invention, in the case of implementation of chassis side walls 5 subdivided into several plates, each provided with a reduction gear 3, mounted cantilevered, with a shredding element 4, by through its fixed part 3 ', on such a plate, at least one plate thus equipped can be mounted in an articulated or sliding manner relative to the adjacent plate and be actuated by a jack in the direction of pivoting or sliding upwards with respect to said adjacent plate. Preferably, such a hinged plate with the chipping element 4 will be arranged upstream of the other plates, namely at the inlet of a pre-grinder or pre-shredder in the direction of a feed chute. Thus, it is possible to release a first shredding element 4 at the entrance of a pre-grinding or pre-shredding machine, in order to allow the introduction into this machine of relatively bulky products, for example a dimension greater than the width of a shredding element 4, these products being then crushed during the return to position of the element 4 by tilting or sliding in the operating position of the pivoting plate supporting it.

La figure 5 des dessins annexés représente une variante de réalisation de l'invention, dans laquelle le pré-broyeur ou pré-déchiqueteur comporte au moins un élément de déchiquetage 4 entraîné par un ensemble d'entraînement 1, cet élément de déchiquetage 4 étant monté sur l'extrémité d'un châssis 5' sous forme d'une paire de bras de support, dont l'autre extrémité est articulée sur le châssis d'un broyeur ou sur une rampe d'alimentation ou analogue par l'intermédiaire d'un axe 50', ce châssis 5' pouvant être pivoté autour de l'axe 50' par l'intermédiaire d'au moins un vérin 51'. Ainsi, il est possible de faire varier la distance de l'élément de déchiquetage 4 par rapport à une rampe d'alimentation ou à une trémie d'alimentation, de telle sorte que le pré-broyage ou pré-déchiquetage peut être plus ou moins important, par exemple en fonction de la résistance mécanique des produits à broyer.The figure 5 The attached drawings show an alternative embodiment of the invention in which the pre-shredder or pre-shredder comprises at least one shredding element 4 driven by a drive unit 1, this shredding element 4 being mounted on the shredder. end of a frame 5 'in the form of a pair of support arms, the other end of which is articulated on the chassis of a mill or on a feed ramp or the like via an axis 50 ', this chassis 5' can be pivoted about the axis 50 'through at least one cylinder 51'. Thus, it is possible to vary the distance of the shredding element 4 with respect to a feed ramp or a feed hopper, so that the pre-grinding or pre-shredding can be more or less important, for example depending on the strength of the products to grind.

Selon une caractéristique de l'invention, l'élément de déchiquetage 4 peut être unique et coopérer avec des contre-outils fixes ou, comme le montre la figure 5, peut coopérer avec un élément de déchiquetage 4 identique à sens et à vitesse de rotation identiques ou différentes, l'axe de ce deuxième élément de déchiquetage pouvant former simultanément l'axe 50' de pivotement du châssis 5' ou un axe de pivotement excentré du châssis 5.According to one characteristic of the invention, the shredding element 4 may be unique and cooperate with fixed counter-tools or, as shown in figure 5 , can cooperate with a shredding element 4 identical to the same or different direction and speed of rotation, the axis of this second shredding element being able to simultaneously form the pivot axis 50 'of the frame 5' or an eccentric pivot axis chassis 5.

Dans le cas d'une vitesse de rotation différente et d'une rotation dans le même sens, il sera possible d'alimenter directement un broyeur ou un concasseur, ce tout en améliorant le pré-broyage ou pré-déchiquetage, ce qui facilitera l'opération de broyage et de concassage.In the case of a different speed of rotation and a rotation in the same direction, it will be possible to directly feed a crusher or a crusher, while improving the pre-grinding or pre-shredding, which will facilitate grinding and crushing operation.

Les contre-outils coopérant éventuellement avec l'élément de déchiquetage 4 peuvent être sous forme d'outils fixes ou amovibles solidarisés avec des supports mobiles sous l'action de vérin, de sorte que lesdits outils peuvent être éclipsés pour permettre une éjection directe ou une alimentation directe d'un broyeur en aval.The counter-tools possibly cooperating with the chipping element 4 may be in the form of fixed or removable tools secured to movable supports under the action of a jack, so that said tools can be eclipsed to allow direct ejection or direct feeding of a mill downstream.

L'élément de déchiquetage 4 prévu à l'extrémité pivotante du châssis 5' a le même effet qu'un volet ou un écraseur du fait qu'il comprime la matière contre une paroi de préférence de la rampe d'alimentation et, du fait du mouvement de pivotement du châssis 5', il permet de faire avancer la matière à traiter vers des contre-outils fixes ou vers l'autre élément déchiqueteur 4.The shredding element 4 provided at the pivoting end of the frame 5 'has the same effect as a flap or crimper because it compresses the material against a wall preferably of the feed ramp and, because of the pivoting movement of the frame 5 ', it makes it possible to advance the material to be treated towards fixed counter-tools or towards the other shredder element 4.

Enfin, conformément à une autre caractéristique de l'invention, non représentée aux dessins annexés, une partie de la rampe d'alimentation, de préférence située sous l'élément de déchiquetage 4 monté pivotant par rapport à l'axe 50', est articulée pour servir de clapet d'éjection de produits non déchiquetables ou non broyables, cette partie pivotante de la rampe d'alimentation étant actionnée par des vérins de préférence hydrauliques.Finally, according to another characteristic of the invention, not shown in the accompanying drawings, a portion of the feed ramp, preferably located under the shredding element 4 pivotally mounted relative to the axis 50 ', is articulated to serve as a non-shredded or non-shredded products ejection valve, this pivoting portion of the feed ramp being actuated by preferably hydraulic cylinders.

Selon une autre caractéristique de l'invention et comme le montre la figure 6 des dessins annexés, les parois latérales de châssis 5 peuvent avantageusement être subdivisées en deux parties symétriques 55 suivant de préférence la ligne d'axe ou proche de cette ligne reliant les axes des réducteurs 3 et des éléments de déchiquetage 4 et forment ainsi au niveau de chacun des ces axes des parties de paliers de réception des parties fixes 3' desdits réducteurs 3, les deux parties 55 du châssis 5 étant reliées entre elles de préférence à l'une de leurs extrémités par un axe d'articulation 56 et pouvant être pivotées de préférence l'une par rapport à l'autre autour de cet axe 56 par l'intermédiaire d'au moins un vérin d'actionnement 57. Un tel mode de réalisation permet de procéder à un montage et à un démontage rapides des ensembles réducteur 3 - élément(s) de déchiquetage 4, par simple pivotement d'une partie 55 de la paroi du châssis 5 par rapport à l'autre, de sorte que les parties fixes 3' des réducteurs 3 peuvent être instantanément maintenues ou dégagées. Une partie peut être assemblée par rapport à l'autre par rainure et languette.According to another characteristic of the invention and as shown by figure 6 In the accompanying drawings, the chassis side walls 5 can advantageously be subdivided into two symmetrical parts 55 preferably along the axis line or close to this line connecting the axes of the gear units 3 and shredding elements 4 and thus form at the level of each of these axes of the receiving portions of the fixed parts 3 'of said gear units 3, the two parts 55 of the frame 5 being interconnected preferably at one of their ends by a hinge pin 56 and can be rotated preferably relative to each other about this axis 56 via at least one actuating cylinder 57. Such an embodiment allows for assembly and disassembly rapid reduction units 3 - shredding element (s) 4, by simply pivoting a portion 55 of the wall of the frame 5 relative to the other, so that the fixed parts 3 'of the gearbox 3 can be instantly maintained or cleared. One part can be connected to each other by tongue and groove.

De préférence, dans un tel cas, les paliers 31' des parties fixes 3' des réducteurs 3, ainsi que lesdites parties fixes 3' peuvent avantageusement présenter une section cylindrique non circulaire, à savoir ovale ou polygonale (figure 6), de sorte que le maintien desdites parties fixes 3' des réducteurs 3 contre une rotation est assurée automatiquement. Il en résulte que les paliers peuvent assurer simultanément un déplacement des parties fixes 3', dû à la dilatation du ou des éléments de déchiquetage 4, la limitation de ce déplacement de dilatation des parties fixes 3' étant assurée par la prévision sur ces dernières, de part et d'autre de la paroi latérale de châssis 5 correspondante d'une butée d'arrêt rapportée (non représentée).Preferably, in such a case, the bearings 31 'of the fixed parts 3' of the reducers 3, as well as said fixed parts 3 'may advantageously have a non-circular cylindrical section, namely oval or polygonal ( figure 6 ), so that the maintenance of said fixed parts 3 'of the gear units 3 against a rotation is automatically ensured. As a result, the bearings can simultaneously ensure a displacement of the fixed parts 3 ', due to the expansion of the shredding element or elements 4, the limitation of this expansion displacement of the fixed parts 3' being ensured by the prediction on the latter, on either side of the corresponding frame side wall 5 of an abutment stop (not shown).

Selon une autre caractéristique de l'invention, également représentée à la figure 6 des dessins annexés, il est également possible de monter les parties fixes 3' des réducteurs 3 de manière excentrée dans des paliers cylindriques non circulaires. Ainsi, chaque élément de déchiquetage 4 avec son ensemble d'entraînement 1 peut être réglé en position dans le châssis 5 par une simple rotation autour de l'axe de montage sur les parois du châssis 5, ce qui aura pour effet d'entraîner un déplacement des éléments de déchiquetage 4 dans le sens d'un rapprochement ou d'un écartement parallèlement au fond de la rampe d'alimentation ou à un élément de déchiquetage 4 voisin.According to another characteristic of the invention, also represented in the figure 6 In the accompanying drawings, it is also possible to mount the fixed parts 3 'of the gear units 3 eccentrically in non-circular cylindrical bearings. Thus, each shredding element 4 with its drive assembly 1 can be adjusted in position in the frame 5 by a simple rotation about the mounting axis on the walls of the frame 5, which will have the effect of causing a moving the shredding elements 4 in the direction of a reconciliation or spacing parallel to the bottom of the feed ramp or to a shredding element 4 neighbor.

Conformément à une variante de réalisation de l'invention, non représentée aux dessins annexés, l'élément de déchiquetage 4 sous forme d'un tube à paroi de forte section ou d'un arbre plein peut présenter, en lieu et place du ou des flasques ou brides d'extrémité, un moyen d'entraînement par emboîtement dans un logement de forme correspondante de l'extrémité libre de la partie mobile 3" du réducteur 3 correspondant. Une telle réalisation de l'élément de déchiquetage 4 permet son démontage par simple retrait de son moyen d'entraînement hors du logement correspondant de la partie mobile 3'.According to an alternative embodiment of the invention, not shown in the accompanying drawings, the shredding element 4 in the form of a tube with a large section wall or a solid shaft may present, in place of the flanges or end flanges, a drive means by interlocking in a correspondingly shaped housing of the free end of the movable part 3 "of the corresponding reducer 3. Such an embodiment of the shredding element 4 allows its dismounting by simple withdrawal of its drive means from the corresponding housing of the movable portion 3 '.

Il est également possible, suivant une autre variante de réalisation de l'invention, en cas de mise en oeuvre de moteurs d'entraînement hydrauliques, de relier ces derniers directement à ou aux éléments de déchiquetage 4, la variation de vitesse de ces moteurs étant réalisée par l'intermédiaire de leurs moyens d'alimentation, ce qui permet d'intervenir directement sur les caractéristiques dynamiques du ou des éléments 4.It is also possible, according to another embodiment of the invention, in the case of implementation of hydraulic drive motors, to connect these directly to or shredding elements 4, the speed variation of these motors being achieved by means of their supply means, which allows to intervene directly on the dynamic characteristics of the element or elements 4.

Grâce à l'invention, il est possible de réaliser un pré-broyeur ou pré-déchiqueteur de produits à traiter de faible encombrement et de poids réduit. En outre, du fait de la mise en oeuvre du réducteur 3, la construction de telles machines est également considérablement simplifiée et donc nettement moins coûteuse.Thanks to the invention, it is possible to produce a pre-shredder or pre-shredder of products to be processed with small dimensions and reduced weight. In addition, because of the implementation of the gearbox 3, the construction of such machines is also considerably simplified and therefore significantly less expensive.

De plus, la possibilité d'un montage des éléments de déchiquetage suivant deux sens permet la mise en oeuvre d'outils réversibles et ainsi l'obtention d'une longévité accrue des pièces d'usure.In addition, the possibility of mounting the shredding elements in two directions allows the implementation of reversible tools and thus obtaining a longer life of the wear parts.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés aux dessins annexés. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims (20)

  1. Pre-grinder or pre-shredder, essentially consisting of at least one drive assembly (1) comprising a hydraulic or electric drive motor (2) and a reducing gear (3) and of at least one shredding element (4) connected to the reducing gear, and mounted on a frame (5), a wall, a feed chute or another support, characterised in that the reducing gear (3) of the drive assembly (1) of this pre-grinder or pre-shredder forms an element for fastening and support of at least one shredding element (4) and consists of a stationary part (3'), fastened directly to the frame (5) of the pre-grinder or pre-shredder or to a support or a wall of the latter, and of a mobile part (3"), the shredding element (4) being fixed to the mobile part (3") of this reducing gear (3) and being guided and held directly on the frame (5) by the reducing gear (3) of the drive assembly (1), which ensures the functions of support and of guiding in rotation of the shredding element (4).
  2. Pre-grinder or pre-shredder, according to claim 1, characterised in that the shredding element (4) is in the form of a tube having a wall with a large cross-section or of a solid shaft provided at at least one end with a flange or collar (13) for fastening to a corresponding flange or collar (13") of the mobile part (3") of the reducing gear (3).
  3. Pre-grinder or pre-shredder, according to either one of claims 1 and 2, characterised in that the mobile part (3") of the reducing gear (3) is mounted overhanging the frame (5) or wall, etc., in relation to the stationary part (3') of this reducing gear and forms a fastening support of the shredding element (4).
  4. Pre-grinder or pre-shredder, according to any one of claims 1 to 3, characterised in that the stationary parts (3') of the reducing gears (3) are mounted on eccentric collars that work with reaction arms or the like.
  5. Pre-grinder or pre-shredder, according to any one of claims 1 to 3, characterised in that the shredding element (4) is fastened to the mobile part (3") of the reducing gear (3) by means of a flange or of a collar (13) and is equipped at its opposite end with a sealing cover or with an assembling collar (9), fastened by screwing, by bolting or by welding.
  6. Pre-grinder or pre-shredder, according to any one of claims 1 to 5, characterised in that several shredding elements (4) are mounted in series between two reducing gears (3), so as to obtain a very large working width.
  7. Pre-grinder or pre-shredder, according to claim 1, characterised in that it comprises a mobile flap (10) equipped with teeth (11) that constitute obstacles between the tools (6) of the shredding element (4), said mobile flap (10) being mounted in a pivoting manner under or on said pre-grinder or pre-shredder and controlled in pivoting by means of at least one jack (12).
  8. Pre-grinder or pre-shredder, according to any one of claims 1 to 7, characterised in that in the case of using shredding elements (4) mounted at their two ends on reducing gears (3), whose stationary parts (3') are each fastened to a wall of the frame (5) of the pre-grinder or pre-shredder, a stationary part (3') of one end of each shredding element (4) is mounted on the corresponding wall of the frame (5) by interlocking with a collar or a ring sliding in a corresponding housing of said corresponding wall of the frame (5) and held against a rotation, while the stationary part (3') assigned at the opposite end is directly interlocked with the corresponding wall.
  9. Pre-grinder or pre-shredder, according to claim 8, characterised in that the hold against a rotation of the sliding collars or rings that are interlocked with the stationary part (3') is ensured by means of cotter pins that work with corresponding longitudinal grooves provided in the bearings made in the wall of the frame (5), as well as on said sliding collars or rings, or even by means of reaction arms connecting said collars or rings each to a stationary point provided on said wall of the frame (5).
  10. Pre-grinder or pre-shredder, according to any one of claims 1 to 9, characterised in that the walls of the frame (5) forming the supports of the shredding elements (4) are mounted in a reversible way with the side walls of the frame (5) on the support of said frame (5), so as to make possible a turning-over of these elements (4) with the walls of the frame (5), around an axis that is perpendicular to their longitudinal axis.
  11. Pre-grinder or pre-shredder, according to any one of claims 1 to 10, characterised in that each side wall of the support frame (5) of the shredding elements (4) is subdivided into a number of plates equal to the number of shredding elements (4), each plate being assigned to the support and guiding of one end of a shredding element (4) and being connected to the neighboring plate or plates, as well as to the rest of the frame (5) by means of assembling means by bolting or the like.
  12. Pre-grinder or pre-shredder, according to claim 11, characterised in that in the case of using side walls of frame (5) that are subdivided into several plates, each equipped with a reducing gear (3), mounted overhanging, with a shredding element (4), by means of its stationary part (3'), on such a plate, at least one plate that is thus equipped is mounted in an articulated way or to slide in relation to the neighboring plate and is actuated by a jack in the direction of a pivoting or of a sliding upward in relation to said neighboring plate.
  13. Pre-grinder or pre-shredder, according to any one of claims 1 to 3, characterised in that it comprises at least one shredding element (4) driven by a drive assembly (1), this shredding element (4) being mounted on the end of a frame (5') or on the shaft or the attachment of the other shredding element in the form of a pair of support arms or collar, whose other end is articulated on the frame of a grinder or on a feed ramp or the like by means of a shaft (50'), this frame (5') being able to be pivoted around the shaft (50') by means of at least one jack (51').
  14. Pre-grinder or pre-shredder, according to claim 13, characterised in that the shredding element (4) is single and works with stationary counter-tools or works with an identical shredding element (4) having an identical or different direction and speed of rotation, the shaft of this second shredding element being able to simultaneously form the pivoting shaft (50') of the frame (5') or an eccentric pivoting shaft of the frame (5).
  15. Pre-grinder or pre-shredder, according to either one of claims 13 and 14, characterised in that a part of the feed ramp, preferably located under the shredding element (4) mounted to pivot in relation to the shaft (50'), is articulated to serve as a flap for ejection of products that cannot be shredded or cannot be ground, this pivoting part of the feed ramp being actuated by jacks, preferably hydraulic jacks.
  16. Pre-grinder or pre-shredder, according to any one of claims 1 to 15, characterised in that the side walls of frame (5) are subdivided into two symmetrical parts (55) along the axis line connecting the shafts of the reducing gears (3) and of the shredding elements (4) and thus form, at the level of each of these shafts, half-bearings for receiving the stationary parts (3') of said reducing gears (3), the two parts (55) of the frame (5) being connected to one another at one of their ends by an articulation shaft (56) and are preferably pivoted in relation to one another around this shaft (56) by means of at least one actuation jack (57).
  17. Pre-grinder or pre-shredder, according to claim 16, characterised in that the bearings (31') of the stationary parts (3') of the reducing gears (3) as well as said stationary parts (3') exhibit a non-circular cylindrical cross-section, namely oval or polygonal, so that the holding of said stationary parts (3') of the reducing gears (3) against a rotation is ensured automatically.
  18. Pre-grinder or pre-shredder, according to either one of claims 16 and 17, characterised in that the stationary parts (3') of the reducing gears (3) are mounted in an eccentric way in non-circular cylindrical bearings.
  19. Pre-grinder or pre-shredder, according to any one of claims 1 to 3, characterised in that the shredding element (4) in the form of a tube having a wall with a large cross-section or of a solid shaft has, in place of the end flange or flanges or end collar or collars, a drive means which drives by fitting in a housing of corresponding shape of the free end of the mobile part (3") of the corresponding reducing gear (3).
  20. Pre-grinder or pre-shredder, according to either one of claims 1 and 2, characterised in that in the case of using hydraulic drive motors, the latter are connected directly to the shredding element or elements (4).
EP11708056.4A 2011-02-01 2011-02-01 Pre-grinder or a pre-shredder Not-in-force EP2701847B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2011/050200 WO2012104495A1 (en) 2011-02-01 2011-02-01 Pre-grinding mill or pre-disintegrator

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EP2701847A1 EP2701847A1 (en) 2014-03-05
EP2701847B1 true EP2701847B1 (en) 2016-01-27

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EP11708056.4A Not-in-force EP2701847B1 (en) 2011-02-01 2011-02-01 Pre-grinder or a pre-shredder

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ES (1) ES2568794T3 (en)
WO (1) WO2012104495A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU80007A1 (en) 1978-07-20 1980-02-14 Arbed ROLL BREAKER
DE3731934A1 (en) * 1987-09-23 1989-04-13 Kloeckner Humboldt Deutz Ag TWO-ROLLING MACHINE LIKE A ROLLING PRESS
US6092753A (en) * 1993-06-01 2000-07-25 Koenig; Larry E. Material processing apparatus
GB0011213D0 (en) 2000-05-10 2000-06-28 Ulster Engineering Limited Shredding apparatus

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WO2012104495A1 (en) 2012-08-09
ES2568794T3 (en) 2016-05-04
EP2701847A1 (en) 2014-03-05

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