WO2005028113A1 - Concasseur et procede d'exploitation de concasseurs - Google Patents

Concasseur et procede d'exploitation de concasseurs Download PDF

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Publication number
WO2005028113A1
WO2005028113A1 PCT/IB2004/051825 IB2004051825W WO2005028113A1 WO 2005028113 A1 WO2005028113 A1 WO 2005028113A1 IB 2004051825 W IB2004051825 W IB 2004051825W WO 2005028113 A1 WO2005028113 A1 WO 2005028113A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
knife
stator
knives
shredder
Prior art date
Application number
PCT/IB2004/051825
Other languages
German (de)
English (en)
Inventor
Igor Plahuta
Original Assignee
Igor Plahuta
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
Priority claimed from DE20314764U external-priority patent/DE20314764U1/de
Application filed by Igor Plahuta filed Critical Igor Plahuta
Publication of WO2005028113A1 publication Critical patent/WO2005028113A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C2018/188—Stationary counter-knives; Mountings thereof

Definitions

  • the invention relates to a method for operating a coarse material shredder for shredding waste, tires, furniture, household appliances or the like, comprising a motor-driven rotor equipped with knives, a knife holder fixedly arranged with respect to the rotary movement of the rotor, with a knife holder in a shredding operation of the Shredder interacting with the knives of the rotor and stator knives and means for adjusting the cutting gap between the knives of the rotor and the stator knife.
  • the invention relates to coarse material shredder for shredding waste, tires, furniture, household appliances or the like, comprising a motor-driven rotor equipped with knives, a knife holder which is fixedly arranged with respect to the rotary movement of the rotor, with a knife holder with the knives of the rotor during a shredding operation of the shredder interacting stator knife and with an adjusting device for adjusting the stator knife and / or the knife holder for adjusting the width of the cutting gap between the knives of the rotor and the stator knife.
  • Such a shredder is known from WO 01/91905 A1.
  • This known shredder includes a knife holder which can be pivoted about a pivot axis running parallel to the axis of rotation of the rotor.
  • the knife holder carries two knives diametrically opposite each other to the axis of rotation of the knife holder, one of which interacts with the knives of the rotor during a shredding operation of the shredder to shred material located in the shredder. If a knife change is provided after the cutting edge has worn, the knife holder is pivoted in this previously known shredder in order to bring the other knife into the cutting position.
  • the cutting edge of a stator knife is worn and worn out when the desired shredding result no longer occurs.
  • the other knife brought out of the cutting position can be exchanged or relocated so that the next time the knife is changed, the new or the converted old stator knife can be brought into the cutting position with a new cutting edge.
  • a hydraulic adjusting device is used to adjust the knife holder, via which a torque is transmitted to the knife holder when the knife holder is desired to be adjusted.
  • the knife holder is adjusted with the knife to be brought into the cutting position until the cutting gap has the desired width.
  • a cutting gap is set when the rotor is rotating.
  • Knife shredders whose stator knives are moved translationally to the cutting gap setting in relation to the lateral surface of the rotor, are exchanged in an analogous manner.
  • changing the knife or moving a knife is only possible when the shredder is at a standstill. If a cutting edge is worn, a knife change or a knife change takes place.
  • frequent downtimes of the shredder are necessary.
  • the cutting edge of the stator-side knife gradually wears out while changing the geometry of the cutting surface.
  • the originally intended cutting edge is increasingly rounded with increasing wear of the stator knife, which also increases the cutting gap between the stator knife and the rotor knives.
  • the quality of the comminuted material changes - the comminuted material.
  • efforts are made to be able to produce comminution material that is as homogeneous as possible with such shredders.
  • there is a desire for shredders especially those in which the stator knife is moved translationally with respect to the rotor for setting the cutting gap, in which the times of a machine downtime are reduced in relation to the operating time.
  • the invention is therefore based on the object of developing a method mentioned at the outset and a shredder mentioned at the outset in such a way that not only is a more homogeneous comminution product available, but in particular the proportion of machine downtimes is also reduced compared to the operating times.
  • the process-related problem is solved according to the invention by a generic method mentioned at the outset, in which the width of the cutting gap between the stator knife and the knives of the rotor is successively adjusted during the comminution operation, in order in this way to cause a defined wear of the stator knife and thereby over to maintain the service life of the stator knife, the geometry of the interacting cutting surface of the stator knife.
  • the device-related object is achieved by a generic coarse material shredder mentioned at the outset, the rotor of which carries a knife arrangement with an effective cutting width that extends over the entire cutting width of the stator knife and the one sensor connected to a control unit controlling the actuating device for receiving at least one while the rotor is rotating control variable caused by a contact between the blades of the rotor and the stator-side blade.
  • the stator knife is successively readjusted during the shredding operation in order to maintain a constant arrangement between the rotor knife and the stator knife.
  • This can be done continuously or in discrete, expedient, small steps.
  • the readjustment speed of the stator knife can be provided differently depending on the material to be shredded and / or the wear occurring on the stator knife.
  • the invention is based on the surprising finding that when an industrial coarse material shredder is operated while leaving a cutting gap which is constant in terms of its width or remains the same within narrow limits, wear or wear geometry on the stator knife sets in comparison to a new stator knife with a sharp cutting edge However, this only takes place to such a small extent that the shredding result is unaffected or at least largely unaffected.
  • the shredder can basically be operated without the rotor's downtime until the stator knife is worn or worn. Only then will a knife change be necessary. The rotor does not need to be stopped when changing the stator blade; only the material supply is stopped for the time of the knife change.
  • the cutting surface of the stator knife is corrected each time the stator knife is moved so that the predefined cutting geometry is restored. This is done by the rotor knives interacting with the stator knife, so that ultimately one can speak of a self-sharpening of the stator knife when operating a shredder in the manner described.
  • traversing the stator knife which is expediently done in discrete steps, it can also be provided that the stator Knife is approached with its cutting surface to the rotor knife so that the rotor knife touches the re-sharpening of the stator knife.
  • the method described can in principle also be operated if such knife contact does not take place and the stator knife is ultimately subjected to deliberate wear and tear as a result of the comminution process.
  • stator knife has a lower hardness than the rotor knife.
  • the cutting surface or cutting edge of the stator knife is then self-sharpening in a particularly expedient manner.
  • materials to be shredded in which it is not possible to use a stator knife which is softer in terms of its hardness than the hardness of the rotor knife.
  • a shredder comprises a plurality of rotor knife arrangements, each with a plurality of knives, for example six, lying one behind the other in the rotational direction of the rotor.
  • the stator knife is therefore subject to six times the wear of a single rotor knife.
  • the shredder In order to record the wear of the knife, which in this context means in particular the wear of the stator knife, the shredder has a sensor for recording a control variable caused by the shredding operation, from which conclusions can be drawn about the wear and tear of the cut surfaces, in particular the stator knife can be. Ultimately, the formation of the cutting gap can also be inferred from such a controlled variable.
  • a sensor can, for example, be used as a be designed sensor by which the shocks caused by the interaction of the rotor knives with the stator knives during shredding are absorbed.
  • the level of the bumps is a measure of the wear and tear of the cut surface of the stator knife, bumps with a higher level generally suggest a higher level of wear than those with a lower level.
  • the touch frequency can also be detected with such a sensor.
  • the sensor is connected to a control unit, via which the detected sensor signals are evaluated, for example by comparison with a threshold value (level). If, for example, when using an acceleration sensor, a predefined threshold value is exceeded, the control unit controls the actuating device in order to track the stator knife to reduce the cutting gap and to compensate for the wear that has occurred.
  • the rotor has a knife arrangement with an effective cutting width that extends over the entire cutting width of the stator knife. This can be achieved with one or more knives arranged one behind the other in the circumferential direction, extending over the entire length of the rotor, or also with knives which are offset from one another by an angle of rotation and interact with a straight stator knife.
  • the rotor has a plurality of rotor knife assemblies arranged at a distance from one another, each of which has a plurality of knives one behind the other, preferably at the same angular distance from one another in the direction of rotation of the rotor, there is at least one intermediate knife between these knife assemblies, which protrudes from the surface of the rotor .
  • the rotor expediently has an intermediate knife arrangement between a respective rotor knife arrangement with a number of intermediate knives corresponding to the rotor knife arrangement.
  • stator knife used in the context of these explanations includes not only a single stator knife, but also a stator knife arrangement formed from a plurality of individual stator knives.
  • FIG. 3 shows an enlarged representation of the arrangement of the rotor knives with respect to the stator knife and the wear geometry of the stator knife that occurs during operation of the shredder
  • FIGS. 1 and 2 a plan view of a section of the shredder of FIGS. 1 and 2, illustrating the engagement of the rotor knives in the comb-like stator knife immediately before a cutting gap adjustment
  • FIG. 5 shows a representation corresponding to FIG. 3 after the cutting gap has been adjusted
  • a coarse material shredder 1 is designed as a so-called single-shaft shredder and comprises a motor-driven rotor 2, which has a plurality of longitudinally spaced apart rotors 2
  • Each rotor knife assembly 3 In the illustrated embodiment, comprises six individual rotor knives 4, which are each fastened to the rotor 2 by means of a knife holder 5.
  • the knife holders 5 are arranged at the same angular distance from one another in the direction of rotation of the rotor 2. Between each rotor knife arrangement 3 there is an intermediate knife arrangement formed from six intermediate knives 6. The height of the intermediate knife 6 is small compared to the height of the rotor knife 4.
  • the rotor knives 4 are so-called chopping knives.
  • the shredder 1 also has a knife holder 7 which is held on the frame side and thus stationary with respect to a rotary movement of the rotor 2.
  • the knife holder 7 serves to hold a stator knife 8.
  • the stator knife 8 is comb-shaped with its side facing the rotor 2, the rotor knives 4 in Engage recesses 9 of the stator knife 8. While the rotor blade 4 8 cooperate with the recesses 9 of the stator blade for crushing a introduced in the crusher 1 'good, the intermediate knife 6 cooperate with the recesses 9 laterally enclosing the comb-like projections 10 of the stator blade 8 with the.
  • a micromechanical acceleration sensor 11 is arranged on the knife holder 7.
  • the acceleration sensor 11 serves to detect the impacts induced in the stator knife 8 or in the knife holder 7 during a shredding operation.
  • the acceleration sensor 11 is connected to a control unit in a manner not shown.
  • An actuating device which is again not shown in the figures, can be controlled via this.
  • the stator knife 8 and the knife holder 7 can be moved together or independently of one another in a translatory manner with respect to the rotor 2, so that a cutting gap adjustment and readjustment can be carried out via the adjusting device.
  • the cutting gap is identified by the reference symbol S in the figures.
  • the direction of movement for cutting gap adjustment and adjustment is indicated in FIG. 1 by the arrows. At least the knife holder 7 can also be moved in the opposite direction with the adjusting device.
  • FIG. 1 shows the shredder 1 with newly equipped rotor knives 4 and with a newly equipped stator knife 8.
  • the rotor 2 is driven to rotate in the direction of the arrow shown in the figures.
  • the rotor knives 4 are successively moved past the cut surface 12 of the stator knife 8 facing the rotor 2 for comminuting a material introduced into the comminutor 1. Comminution takes place by cutting the material to be comminuted if, as shown in FIGS. 1 and 2, a rotor knife 4 is immersed in a recess 9 in the stator knife 8.
  • the edges of the individual rotor knives 4 and of the stator knife 8 facing each other in the direction of rotation of the rotor 2 are subject to wear during this process and wear out.
  • the consequence of this is that the originally set cutting gap S, which is as small as possible, is increased as the distance between the outer surface of the rotor knives 4 and the cutting surface 12 of the stator knife 8.
  • the crushing impulses induced when passing a rotor knife 4 on the stator knife 8 into the stator knife 8 and thus into the knife holder 7 have an increasingly larger level with an increasing cutting gap S or with increasing wear of the interacting knives 4, 8.
  • the shredder 1 is operated in such a way that the cutting gap S remains the same within the control limits.
  • this is not done by continuously moving the stator knife slowly, which would be possible in principle, but in individual discrete steps. If the level of the induced impacts exceeds a predetermined dimension (threshold value), the control device controls the actuating device in order to reduce the cutting gap S in a predefined discrete step while the shredding operation is running.
  • a predetermined dimension threshold value
  • the control device controls the actuating device in order to reduce the cutting gap S in a predefined discrete step while the shredding operation is running.
  • the stator knife 8 is first displaced translationally with respect to the rotor 2 - in the embodiment shown in the figures in the direction of its axis of rotation.
  • Such a follow-up step of the stator knife 8 can have a constant amount of movement.
  • the stator knife 8 can also be traversed for setting the cutting gap, so that the cutting gap S is reduced and the stator knife 8 is thus moved in a translatory direction towards the rotor 2 until the impacts induced by the comminution process again have a lower level and a lower level Have fallen below the threshold.
  • a cutting gap setting can also be made on the basis of the contact frequency, in which case the knife contact between individual rotor knives 4 and the stator knife 8 is recorded. With such a preferred stator knife adjustment, the cutting gap is set to a possible minimum. As a result of the knife contacts between the rotor knives 4 and the cutting surface 12 of the stator knife 8, the cutting surface 12 of the stator knife 8 is finally ground in again and thus resharpened.
  • the geometry of the stator knife 8 which arises as a result of the wear of the stator knife 8 provoked by the stator knife readjustment comprises an end face 15 which follows the movement track 14 of the rotor knives 4 and the slightly rounded edge 13, the end face 15 and the edge 13 forming the cut face 12.
  • this cutting surface geometry the intended comminution can take place, with a constant grinding result being achieved over the entire service life of the stator knife 8 by largely maintaining this cutting surface geometry.
  • FIG. 3 shows the cut surface geometry 16 of the stator knife after its wear of a conventional shredder.
  • FIG. 3 The resulting cutting geometry of the stator knife is shown in FIG. 3 in the area of the rear end of one of its cutouts 9. This geometry also arises in the area of the extensions 10 and in particular also in the area of the end closure 17 of the extensions, since this closure 17 interacts with the intermediate knives 16 in the same way as the rotor knives 4 with the cutting surface 12 or its end surface 15th
  • FIG. 3 shows a section of the shredder 1 in which the stator knife 8 has already been adjusted several times. Wear on the rotor knives 4 has not occurred or has occurred only insignificantly. This is simply due to the fact that the stator knife 8 is subject to a six times greater wear than the rotor knives 4, six of which are distributed around the circumference and each are provided as belonging to a rotor knife arrangement 3.
  • the stator knife 8 in the illustrated embodiment has a slightly lower hardness than the rotor knives 4 and the intermediate knife 6. This favors the self-sharpening of the stator knife 8 in the case of successive readjustment when the shredder 1 is in operation.
  • FIG. 2 shows the shredder 1 with partially worn rotor knives 4 and the stator knife 8 that has already been adjusted many times.
  • the wear of the rotor knives 4 has reduced their height compared to the newly installed rotor knives shown in FIG.
  • the knife holder 7 has also been moved in a translatory manner to the rotor 2, as indicated by the arrow in FIG. 2. This is done so that the stator knife 8 does not protrude too far beyond the knife holder 7.
  • the stator knife 8 is first also moved translationally relative to the knife holder 7.
  • the next or expediently the next readjustment steps are carried out in such a way that the knife holder 7 is moved together with the stator knife 8 to set the cutting gap.
  • the adjusting device serves this purpose.
  • FIG. 4 shows the arrangement between the rotor knives 4 and the intermediate knives 6 relative to the stator knife 8 in a top view of the rotor 2.
  • FIG. 4 shows the shredder 1 in an arrangement in which the cutting gap has a width that has to be readjusted.
  • the top view in FIG. 4 shows that the overall hardness is less than that of the rotor knives 4 and the intermediate knives 6.
  • send stator knife 8 itself is divided into areas of different hardness. The different hardness ranges are separated from each other by dashed lines.
  • the stator knife has areas with two different hardnesses, which are designated Hi and H 2 in FIG.
  • the areas marked with H 2 are somewhat harder than the areas of the stator knife 8 designated as Hi than the areas with the hardness Hi. This serves the purpose of protecting the surfaces of the extensions 10, which extend approximately radially to the rotor, from excessive wear and so that the geometry of the recesses 9 in the form shown in FIG. 4 is not impaired.
  • a cut gap is reduced - as can be seen from FIG. 5 - by translationally moving the stator knife 8 towards the rotor 2, namely until the rotor knives 4 and the intermediate knives 6 touch the respective end faces 15, 17 of the stator knife 8, but the rotor 2 never block. This touching is used to grind in the cut surface 12 of the stator knife 8 and to adapt it again to the geometry of the rotor knife 4.
  • the interaction between the knives 4, 6 of the rotor 2 and the stator knife 8 is thus self-optimizing.
  • stator knife 8 is used up more or less completely in the manner described above and that a new stator knife 8 is pushed in without having to interrupt the shredding operation.
  • FIG. 6 shows a further coarse material shredder 18 which, in contrast to the shredder described in FIGS. 1 to 5, has a smooth, continuous stator-side cut surface.
  • the stator knife is identified in FIG. 6 by reference number 19 and the rotor by reference number 20.
  • the rotor 20 bears a large number of rotor knives 21 over the entire cutting width, each of which is arranged offset from one another in relation to the rotational axis of the rotor 20. In this way, the stator knife 19 is uniformly worn over its width.
  • the stator knife 19 is successively readjusted in order to maintain a constant cutting surface geometry.
  • the shredder 18 also has a device for detecting a controlled variable caused by the current shredding operation, on the basis of which it is possible to deduce the current wear of the stator knife 19 in order to be able to set or reduce the width of the cutting gap in accordance with the controlled variable evaluation carried out.
  • the stator knife has two different hardness ranges with regard to its thickness, the upper side of the stator knife having a greater hardness than the areas located below it.
  • the actual cutting edge of the stator knife is then formed by the section of the stator knife that is harder in terms of its hardness.
  • the section of the stator knife forming the actual cutting edge of the stator knife is less worn with respect to the thickness of the stator knife than the sections of the stator knife located below the harder layer.
  • stator knife can be provided by a two-layer structure as a result of a plate structure in the manner of a multilayer plate or by an application in welding technology.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

Selon ce procédé d'exploitation d'un concasseur (1) de déchets, pneus, meubles, appareils ménagers ou similaires, on utilise un rotor (2) pourvu de couteaux (4, 6) et entraîné par un moteur, un porte-couteau (7) fixe par rapport à la rotation du rotor (2) et portant un couteau (8) de stator qui coopère avec les couteaux (4, 6) du rotor (2) pendant le concassage au moyen du concasseur (1), et des moyens pour ajuster le jeu de coupe (S) entre les couteaux (4, 6) du rotor (2) et le couteau (8) du stator. Le procédé se caractérise en ce que la largeur du jeu de coupe (S) entre le couteau (8) du stator et les couteaux (4, 6) du rotor (2) est successivement ajustée pendant le concassage, afin d'user de manière définie le couteau (8) du stator et d'obtenir ainsi une géométrie constante de la surface de coupe (12) du couteau (8) du stator qui coopère avec les couteaux (4, 6) du rotor pendant toute la vie utile du couteau (8) du stator. Le concasseur décrit (1) de matériaux tels que déchets, pneus, meubles, appareils ménagers ou similaires comprend un rotor (2) pourvu de couteaux (4, 6) et entraîné par un moteur, un porte-couteau (7) fixe par rapport à la rotation du rotor (2) et portant un couteau (8) de stator qui coopère avec les couteaux (4, 6) du rotor (2) pendant le concassage au moyen du concasseur (1), et un dispositif d'ajustement pour ajuster le couteau (8) du stator et/ou le porte-couteau (7) de façon à régler la largeur du jeu de coupe (S) entre les couteaux (4, 6) du rotor (2) et le couteau (8) du stator. Le dispositif se caractérise en ce que le rotor (2) porte un ensemble de couteaux avec une largeur effective de coupe qui s'étend sur toute la largeur de coupe du couteau (8) du stator et en ce que le concasseur (1) comprend un capteur (11) connecté à une unité de commande du dispositif d'ajustement afin de détecter au moins une variable réglée résultant du concassage en cours.
PCT/IB2004/051825 2003-09-22 2004-09-22 Concasseur et procede d'exploitation de concasseurs WO2005028113A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE20314764U DE20314764U1 (de) 2003-09-22 2003-09-22 Zerkleinerer
DE20314764.2 2003-09-22
DE10352299A DE10352299A1 (de) 2003-09-22 2003-11-08 Verfahren zum Betreiben eines Zerkleinerers sowie Zerkleinerer
DE10352299.9 2003-11-08

Publications (1)

Publication Number Publication Date
WO2005028113A1 true WO2005028113A1 (fr) 2005-03-31

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PCT/IB2004/051825 WO2005028113A1 (fr) 2003-09-22 2004-09-22 Concasseur et procede d'exploitation de concasseurs

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WO (1) WO2005028113A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008126086A2 (fr) * 2007-04-16 2008-10-23 Yoav Leshem Déchiqueteur
EP2030692A1 (fr) * 2007-08-17 2009-03-04 Udo Becker Broyeur de matière grossière
WO2010115484A1 (fr) * 2009-04-07 2010-10-14 Amni Maschinenbau Gmbh Concasseur, notamment concasseur pour substances grossières
EP2218506A3 (fr) * 2009-02-12 2013-08-28 Pallmann Maschinenfabrik Gmbh + Co. Kg Outil de broyage et dispositif de broyage doté d'un tel outil de broyage ainsi que procédé de détermination de l'état d'usure d'un tel outil de broyage
WO2015114156A1 (fr) * 2014-02-03 2015-08-06 Doppstadt Familienholding Gmbh Dispositif de broyage
WO2016096114A1 (fr) * 2014-12-19 2016-06-23 Doppstadt Familienholding Gmbh Procédé de séparation et de dépôt pour des terres radioactives

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324753A (en) * 1965-03-04 1967-06-13 Eric S Lindau Cutter apparatus
US4801101A (en) * 1987-08-05 1989-01-31 Gruendler Crusher And Pulverizer, Co. Wallboard cutter
DE4023114A1 (de) * 1989-08-11 1991-08-01 Agritechnik Ing Betrieb Verfahren zum feststellen der schaerfe von haeckselmessern
DE4134957A1 (de) * 1991-10-23 1993-04-29 Claas Ohg Gegenschneidenverstellvorrichtung
EP1023827A1 (fr) * 1999-01-27 2000-08-02 Case Harvesting Systems GmbH Procédé pour déterminer l'acuité des lames de hacheuses
EP1287893A2 (fr) * 2001-08-27 2003-03-05 Komatsu Ltd Procédé de régulation pour un dispositif de réglage de l'écartement d'un broyeur à impact et dispositif de réglage de l'écartement
US6565026B1 (en) * 2001-08-28 2003-05-20 Specialty Grinding, Inc. Tire chopping apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324753A (en) * 1965-03-04 1967-06-13 Eric S Lindau Cutter apparatus
US4801101A (en) * 1987-08-05 1989-01-31 Gruendler Crusher And Pulverizer, Co. Wallboard cutter
DE4023114A1 (de) * 1989-08-11 1991-08-01 Agritechnik Ing Betrieb Verfahren zum feststellen der schaerfe von haeckselmessern
DE4134957A1 (de) * 1991-10-23 1993-04-29 Claas Ohg Gegenschneidenverstellvorrichtung
EP1023827A1 (fr) * 1999-01-27 2000-08-02 Case Harvesting Systems GmbH Procédé pour déterminer l'acuité des lames de hacheuses
EP1287893A2 (fr) * 2001-08-27 2003-03-05 Komatsu Ltd Procédé de régulation pour un dispositif de réglage de l'écartement d'un broyeur à impact et dispositif de réglage de l'écartement
US6565026B1 (en) * 2001-08-28 2003-05-20 Specialty Grinding, Inc. Tire chopping apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008126086A2 (fr) * 2007-04-16 2008-10-23 Yoav Leshem Déchiqueteur
WO2008126086A3 (fr) * 2007-04-16 2008-12-24 Yoav Leshem Déchiqueteur
EP2030692A1 (fr) * 2007-08-17 2009-03-04 Udo Becker Broyeur de matière grossière
EP2218506A3 (fr) * 2009-02-12 2013-08-28 Pallmann Maschinenfabrik Gmbh + Co. Kg Outil de broyage et dispositif de broyage doté d'un tel outil de broyage ainsi que procédé de détermination de l'état d'usure d'un tel outil de broyage
WO2010115484A1 (fr) * 2009-04-07 2010-10-14 Amni Maschinenbau Gmbh Concasseur, notamment concasseur pour substances grossières
WO2015114156A1 (fr) * 2014-02-03 2015-08-06 Doppstadt Familienholding Gmbh Dispositif de broyage
WO2016096114A1 (fr) * 2014-12-19 2016-06-23 Doppstadt Familienholding Gmbh Procédé de séparation et de dépôt pour des terres radioactives

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