EP0070004A2 - Dispositif de broyage pour bois transportable - Google Patents

Dispositif de broyage pour bois transportable Download PDF

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Publication number
EP0070004A2
EP0070004A2 EP82106155A EP82106155A EP0070004A2 EP 0070004 A2 EP0070004 A2 EP 0070004A2 EP 82106155 A EP82106155 A EP 82106155A EP 82106155 A EP82106155 A EP 82106155A EP 0070004 A2 EP0070004 A2 EP 0070004A2
Authority
EP
European Patent Office
Prior art keywords
rotor
cutting
guide surface
disc
cutting knife
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82106155A
Other languages
German (de)
English (en)
Other versions
EP0070004B1 (fr
EP0070004A3 (en
Inventor
Herbert Silberbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alois Poettinger Maschinenfabrik GmbH
Original Assignee
Alois Poettinger Maschinenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alois Poettinger Maschinenfabrik GmbH filed Critical Alois Poettinger Maschinenfabrik GmbH
Priority to AT82106155T priority Critical patent/ATE31503T1/de
Publication of EP0070004A2 publication Critical patent/EP0070004A2/fr
Publication of EP0070004A3 publication Critical patent/EP0070004A3/de
Application granted granted Critical
Publication of EP0070004B1 publication Critical patent/EP0070004B1/fr
Expired legal-status Critical Current

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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
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • 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
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/143—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with a disc rotor having generally radially extending slots or openings bordered with cutting knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like

Definitions

  • the present description relates to a device for crushing feedable small wood with a rotatingly driven rotor, which has at least one cutting knife with opposing blade for crushing the small wood and at least one guide surface assigned to the cutting knife for guiding the small wood in the cutting area.
  • the cutting length of the small pieces of wood can only be adjusted by changing the speed of the rotor carrying the cutting knives and / or the number of cutting knives and / or the feeding speed of the supplied small pieces of wood.
  • either speed-adjustable and therefore structurally complex drive devices for the rotor or for a feed device for the small wood or an undesirable expenditure of time for attaching or removing cutting knives are required
  • the object of the present invention is. to provide an apparatus for comminuting feedable weak wood ', as opposed to the previously used devices of the wall in the device for adjusting the cutting length of the weak timber, in particular within a wide adjustment range, necessary design on and the loss of time is reduced or on the other hand seizures, poorly or unevenly cut small wood or the occurrence of damage to the device is avoided.
  • the guide surface for determining the cutting length is adjustable in its distance from the cutting knife by means of an adjusting device.
  • the inventive adjustment of the cutting length of the small wood allows the use of a structurally simple and therefore less prone to failure, speed Constant drive devices for the rotor or for the feed device for the small wood.
  • the adjusting device is expediently designed to be centrally operable.
  • the adjustment device is actuated via a corresponding coupling to the rotor shaft by the rotational movement of the rotor. This results in easier usability, less time and a more precise setting of the desired cutting length of the small wood.
  • An expedient embodiment of the invention uses an adjusting device which has a planetary gear.
  • the rotational movement of the rotor is thereby used in a simple manner for the central actuation of the adjusting device.
  • the sun wheel is advantageously designed.
  • the planet gear is preferably rotatably mounted on an element which is essentially in the form of a disc and which is arranged at right angles to the rotor shaft and is fastened to the same.
  • the sun gear is locked, Movement of this disk attached to the rotor shaft is converted into a rotary movement of the planet gear about its axis rotatably mounted on the disk.
  • the sun gear is not locked, then due to the lower friction of the sun gear bearing on the rotor shaft compared to the friction within the arrangement sun gear - planet gear - adjustable guide surface, the rotary movement of the disk is transmitted to the sun gear. In this case, the planet gear does not move around its axis.
  • the same is expediently arranged on the side of the disk facing away from the guide surface.
  • the planet gear is advantageously designed as a circular section.
  • a flat guide surface arranged at right angles on the rotor shaft is designed to be axially displaceable. It is advantageous here to transmit the rotary movement of the planetary gear, which is initiated to adjust the guide surface, about its axis to the flat guide surface by means of a screw drive.
  • an adjustment of the cutting knife is not necessary to change the cutting length of the small wood. It is therefore preferably arranged on a non-adjustable disc on its side facing the flat guide surface.
  • the arrangement is essentially in the disc plane, with the cutting edge extending approximately in the radial direction. Since the small wood is guided along the guide surface during the cutting, it is expedient to form in the same recess in the area of the cutting knife. By axially displacing the guide surface, a passage of the cutting knife through the recess beyond the plane of the guide surface is made possible, as it corresponds to the respective cutting length of the small wood.
  • the cutting edge of the cutting knife is attached to the disk at such a distance that when the guide surface is in the end position, i. H. set minimum distance between the disc and the guide surface, the desired maximum cutting length of the small wood can be achieved.
  • the flat guide surface is designed to be displaceable from the end position into an initial position which corresponds essentially to the distance of the cutting edge of the cutting knife from the disk, so that the small wood can be cut with the desired minimum cutting length.
  • the planetary gear is expediently arranged in an axial manner, the planetary gear being covered at an axial distance from the disk.
  • this is achieved in that the second disk is arranged on the rotor shaft parallel to and at an axial distance from the first disk.
  • the second disc carries the pivot bearing for the planet gear.
  • Post-shredding of the small wood shredded by the cutting knife is preferably achieved by forming a wear-resistant edge on the radially outer part of a knife holder receiving the cutting knife.
  • a guide plate of the disk and the second disk which is designed as a rear chamber wall, directly to the knife holder, parallel to the rotor radius. If the shredded small wood is to be removed from the rotor by means of an ejection chute, a second guide plate is also advantageously arranged between the plate and the second plate in the direction of rotation of the rotor in front of the knife holder as an essentially tangential guide plate.
  • a housing When using an ejection chute, a housing usually encloses the rotor.
  • a substantially radially oriented throwing wing is preferably attached to the radially outer part of the knife holder. It extends to the inner wall of the housing and throws the shredded small wood tangentially into the chute.
  • the guide surface is designed as a guide surface which is arranged essentially at right angles to the plane of the disc and is curved in the circumferential direction of the motor and is essentially adjustable in the radial direction.
  • the curved guide surface is attached in front of the cutting knife attached with its cutting edge parallel to the rotor shaft.
  • such an arrangement is expedient in which the cylindrical lateral surfaces of the cutting edge of the cutting knife described when the R-rotor rotates and the guide surface set to the minimum cutting length of the small wood essentially match. This on the one hand enables the smallest possible cutting length, for example a zero cutting length of the small wood, and on the other hand avoids an unnecessary projection of the curved guide surface beyond the cutting edge of the cutting knife that does not contribute to the function of the device.
  • the essentially radial adjustability of the curved guide surface is achieved in that it represents the radially outer flank of a substantially wedge-shaped body with the wedge tip pointing in the direction of rotation of the rotor, which body is pivoted about a pivot axis arranged in its wedge tip parallel to the rotor shaft can.
  • the adjustment of the curved guide surface is preferably actuated by means of a crank drive which transfers the rotational movement of the planet gear about its axis to the curved guide surface.
  • the device for shredding feedable small wood has a chamber for holding the shredded small wood, it must necessarily be arranged in the area of the cutting edge of the cutting knife.
  • the design of the chamber is expediently simplified in terms of construction in that the surface of the wedge-shaped body opposite the pivot axis is designed as the wall of the chamber, which is remote from the cutting edge of the cutting knife, as the direction of rotation of the rotor.
  • the wedge-shaped body It is necessary to take into account the pivoting movement of the wedge-shaped body about a pivot axis. For this reason, its surface opposite the pivot axis is designed as an arcuate surface, the axis of which coincides with the pivot axis. According to the invention, the arcuate surface has a radius such that it extends to the edge of a radially inner wall of the chamber adjacent to it. This seals these two parts.
  • the adjustment device is expediently only on one Side of the rotor attached.
  • This very advantageous measure increases the pressure within the rotor and can be adjusted by means of the closable openings so that, for example, different throwing distances for shredded small wood with the same cutting lengths or the same throwing distances for small wood with different cutting lengths can be achieved.
  • This is particularly interesting for the cutting of inhomogeneous small wood in terms of strength or relatively rotten small wood, in which the accumulation of differently shredded wooden parts cannot be avoided during a working process.
  • small wooden parts are ejected less far from the rotor than large wooden parts.
  • FIGS. 1 to 9 A so-called disc chopper is shown in FIGS. 1 to 9 and a so-called drum chopper is shown in FIGS. 10 to 11, the same reference numerals for analog ones. Bautaile can be used.
  • Figures 1, 2, 10 and 11 show a device 1 for crushing feedable small wood 2 with a frame 3, a housing 4 and a rotor shaft 5.
  • the frame 3 has fastening elements 6 for an attachment, not shown here, and takes over the storage of the horizontally aligned, rotatable rotor shaft 5.
  • the housing 4 shows an end wall 7 facing the frame 3, an end wall facing away from it and a peripheral wall 9 which extends essentially along a cylindrical outer surface. They. is attached to the frame 3 in such a way that the rotor shaft coincides with the cylinder axis of the housing 4.
  • a feed chute 10 and an ejection chute 11 each open into the housing 4, both with an essentially square cross section, the ejection chute 11 over the width of the housing 4 opens into the housing 3 from above in the tangential direction.
  • the horizontally arranged feed shaft 10 engages the end wall 8 of the housing 4 facing away from the frame 3 at an acute angle 13 to the rotor shaft 5 on the lower housing part 14.
  • the feed shaft 10 is perpendicular to the rotor shaft 5 on the housing 4 and is equipped on the inside with a feed device 16 for the small wood 2 being fed.
  • the disk chopper 12 shown in FIGS. 7 to 7 has a rotor 17 arranged vertically on the rotor shaft 5 within the housing 4, which essentially consists of a flat guide surface 18, a disk 19, a second disk 20 and a planetary gear 21. These elements are arranged parallel to each other and listed in the order in which they appear when viewed from the end wall 8 facing away from the frame 3.
  • the flat guide surface 18 is essentially circular and can be displaced in the axial direction 22 with respect to the rotor shaft 5. An initial position AS and an end position ES of the flat guide surface 18 are shown.
  • the sun gear 23 of the planetary gear 21 is arranged on the rotor shaft 5 by means of a rotary bearing 24, whereby it can carry out an independent rotary movement about the rotor shaft 5.
  • the sun gear 23 can be locked on the housing 4 by means of a locking bolt 28, so that it can carry out an independent rotary movement about the rotor shaft 5.
  • a hub 29 is connected to the rotor shaft 5 in a positive and frictional manner by means of a wedge 30 and carries the disk 19 and the second disk 20 on its end faces 31. Both disks are circular with a smaller diameter than the flat guide surface 18. Furthermore, four spokes 32, 33, each offset by 90 °, are arranged on the hub 29, which extend as far as the periphery 34 of the disk 19 and the second disk 20. Viewed in the axial direction, the spokes 32, 33 extend between the disk 19 and the second disk 20.
  • Each chamber 44 has a radially outer chamber opening 45 through which the crushed small wood 46 is thrown into the chute 11.
  • the spokes 32 of the chambers 44 pointing in the direction of rotation 47 of the rotor 17 form the front chamber walls 48.
  • a guide plate 49 is fastened perpendicularly to the front chamber wall 48 in each chamber 44. With a corresponding position of the planet gears 35 and the spokes 32, 33, the point of application 50 of the guide plates 49 on the front chamber walls 48 lies approximately on the pitch circle 51 of the planet gears 35.
  • the guide plates 49 extend in the direction of the respective chamber 44 to the periphery 34 of the Disk 19 'and the second disk 20.
  • the guide plates 49 have the same axial width as the spokes 32, 33.
  • a rear chamber wall 52 is fastened in each chamber 44 to the spoke 33 facing away from the front chamber wall 48.
  • the point of engagement 53 is close to the hole circle 54 of the bores 25 made in the sun gear 23.
  • the rear chamber wall 52 has the same axial width as the spokes 32, 33. It extends parallel to the axis of symmetry 55 of the chamber 44 at a distance therefrom which corresponds approximately to the diameter of the rotor shaft 5.
  • the radially outer ends 56 of the rear chamber walls 52 have approximately the same radial distance from the rotor shaft 5 as the points of attack 50 of the guide plate 49 on the front chamber walls 48.
  • the axial width of the inner chamber walls 52 corresponds to the width of the spokes 32, 33.
  • Two knife holders 57, 58 are fastened to each rear chamber wall 52. They have the same axial width as the rear chamber walls 52, extend parallel to them and are provided with internally threaded bores 59 in the direction of their longitudinal axis.
  • the radially inner knife holders 57 are arranged near the points of attack 50 of the chamber walls 52.
  • the radially outer knife holders 58 are a continuation of the rear chamber walls. 52 directly attached to their radially outer ends 56, their radially outer edges being designed as wear-resistant edges 60. Edges are designed as wear-resistant edges 60.
  • Each of the radially outer knife holders 58 is supported on the spoke 33 via a strut 62. This forms approximately a right angle with the rear chamber wall 52.
  • a throwing vane 64 is provided for each chamber 44, which is angled backwards in the direction of rotation 47 of the rotor 17 and extends between the two disks 19 and 20 of the rotor 17.
  • the spreader vane 64 is fastened to the radially outer surface 67 of the radially outer knife holder 58.
  • the spreader vane can be arranged offset against the direction of rotation 47 of the rotor 17, so that it is fixed in position 66 on the strut 62 moved inward into position 61 approximately in position 65 or on the spoke 33 on the side 68 facing away from the chamber is.
  • a cutting knife 71 is offset by 180 ° in the cutting plane and is fastened parallel to the rear chamber wall 52 by means of a knife carrier 72.
  • the cutting edges 73 are mounted on the side of the cutting knives 71 pointing in the direction of rotation 47 of the rotor 17.
  • the knife carriers 72 essentially have a rectangular shape in cross section, the end face 74 pointing in the direction of rotation 47 of the rotor 17 being chamfered in the direction of rotation 47.
  • the cutting knives 71 are fastened by means of screws 75 to the end faces 74 of the knife carriers 72 with an overhang in the direction of the flat guide surface 18.
  • the end faces 76 of the cutting knives 71 assigned to the cutting edges 73 are chamfered in the cutting plane.
  • the knife carriers 72 are fastened to the knife holders 57, 58 by means of fastening screws 77.
  • a vertical counter-cutting holder 78 in the direction of rotation 47 of the rotor 17 seen in front of the cutting knife 71 attached. It carries on the side facing the cutting knife 71 a vertically arranged shearbar 79. The attachment is carried out by means of screws 80.
  • the shearbar 79 extends in its axial direction essentially to the cutting edge 73 of the cutting knife 71, its edge facing the cutting knife 71 81 with the cutting edge 73 so that a perfect cutting process is guaranteed.
  • the flat guide surface 18 has a rectangular cutout 82 in the area of the cutting knives 70. It extends essentially in the radial direction from the radially inner edge 83 of the cutting knife 71 to the periphery 84 of the flat guide surface 18 and in the circumferential direction from the rear edge 85 of the knife carrier 72 seen in the direction of rotation 47 of the rotor 72 72 cutting edge 73 of the cutting knife 71 Recesses 82 have slightly larger dimensions than the cutting knives 71 with knife carriers 72.
  • a rectangular passage opening 87 is formed between the cutting edge 73 and the front edge 86 of the flat guide surface 18.
  • the disk 19 has a chamber opening 88 with a front edge 89 and rear edge viewed in the direction of rotation 47 of the rotor 18. 90 on.
  • the edge 86 of the planar guide surface 18 and the front edge 89 of the chamber opening 88 are aligned.
  • the rear edge 90 coincides with the edge 91 of the knife carrier 72, which faces from the transition of the oblique end face 74 and that of the disk 19 Surface 92 of the knife carrier 72 is formed.
  • the end wall 8 of the housing 4 has a rectangular opening 93 within the feed shaft 10. This extends from the edge 81 of the shearbar 79 in the direction of the cutting knife 71 to a position which corresponds to the maximum size of the small wood 2 which can be fed.
  • the radial extent of the opening 93 corresponds approximately to the radial length of the cutting knives 71.
  • FIGS. 8 and 9 show a rotor 17 with four cutting blades 71, offset by 90 ° to one another, for a disc chopper.
  • Each cutting knife 71 is assigned its own guide surface 18, which can be axially adjusted by means of the planetary gear 21.
  • a threaded sleeve 39 is fastened to each of the guide surfaces 18, which has the shape of a 90 ° circular disk sector, into which the threaded bolt 38 of the associated planet gear 35 engages. This allows the four guide surfaces to be adjusted together, but it is also possible to arrange them so that the guide surfaces can be adjusted independently of one another.
  • two bolts 97 which are parallel to the rotor shaft 5, protrude from each of the four guide surfaces and engage in opposite guide bores in the disk 19.
  • the training with four instead of two cutting knives has the advantage that the performance of the chopper is correspondingly greater.
  • a drum chopper 15 according to the invention is described below with reference to FIGS. 12 to 14, only the components required for understanding the invention that differ from the disc chopper described above to be discussed.
  • Two flat disks 101 which are arranged parallel to one another at an axial distance form the lateral termination of the drum chopper 15. As shown in FIG. 13, the outside of one of these disks 101 carries the planetary gear 21 arranged on the rotor shaft 5 in a known manner.
  • the four planet gears 102 are here only configured as circular sectors and rotatably supported with the hubs 103 about the axes 104. Viewed in the direction of rotation 47 of the rotor 17, curved guide surfaces 105 are attached in front of the cutting knives 71 offset by 90 ° in each case.
  • Each of these curved guide surfaces 105 has a curvature in the circumferential direction of the rotor 17, which represents the part of a cylindrical outer surface.
  • this cylindrical lateral surface essentially coincides with the cylindrical lateral surface which is formed by the cutting edges 73 of the cutting knives 71 when the rotor 17 rotates.
  • the curved guide surfaces 105 form the radially outer flanks of essentially wedge-shaped bodies 106, the wedge tips 107 of which point in the direction of rotation 47 of the rotor 17.
  • the Wedge-shaped body 106 extend perpendicular to and between the disks 101 and are pivotable about a pivot axis 108 arranged essentially parallel to the rotor shaft 5 with the wedge tips 107, essentially in the radial direction.
  • the pivot axes are mounted at approximately the same radial distance from the rotor shaft 5 as the cutting knives 71.
  • Each of the four wedge-shaped bodies 106 has, on its side facing the planetary gear 21, a side face 109 which is oriented parallel to the disk plane and is broken through by a substantially radially oriented slot 110. It is arranged approximately half the distance between the pivot axis 108 and the circular-arch-conveying surface 111 lying opposite it.
  • the hubs is arranged approximately half the distance between the pivot axis 108 and the circular-arch-conveying surface 111 lying opposite it.
  • the elongated hub 103 and the axes 104 of the planet gears 102 are extended towards the inside of the drum and pass through the elongated holes 110 which provide sufficient clearance.
  • the elongated hub 103 is connected to a crank arm 112 of a crank mechanism 113 arranged on the side of the side end face 109 to be directed toward the inside of the drum.
  • the crank mechanism 113 has a one-arm lever arm 114 which is connected to the crank arm 112 by means of a joint 115.
  • the lever arm 114 is rotatably mounted on an axis 117 which is arranged in the radially inner angle 116 opposite the pivot axis 108 on the lateral end face 109.
  • the crank arm 112 In the initial position AS of the wedge-shaped body 106, the crank arm 112 is arranged approximately at right angles to the longitudinal axis of the elongated hole 110 and forms an essentially right angle with the lever arm 114 pointing radially inward.
  • the rotational movement of the planet gear 102 about its axis 104 is transmitted to the crank arm 112, the joint 115 corresponding to the length of the crank arm 112 moving in a circular arc with a center point lying on the axis 104 in a roughly radial direction.
  • the wedge-shaped body 106 is now also moved in this direction via the lever arm 114 and the axis 117, the axis 117 being pivoted on a circular arc, the center of which is arranged on the pivot axis 108.
  • the elongated hole 110 enables the relative movement between the axis 104 - of the planet gear 102 and the wedge-shaped body 106.
  • holes for receiving the are in the lateral end face 109 along the circular arc, which is described by the axis 117 Axis 117 attached (see FIG. 14).
  • the surface 111 of the wedge-shaped body 106 opposite the pivot axis 108 is formed as part of a cylindrical outer surface, the cylinder axis coinciding with the pivot axis 108.
  • This surface 111 represents the front chamber wall 118, viewed in the direction of rotation 47 of the rotor 17, of a radially outward opening associated with the cutting knife 71.
  • the radially outer opening 119 of the chamber 44 of the drum chopper 15 corresponds to the passage opening 87 and the chamber opening 45 of the disc chopper 12.
  • openings 121 are provided in the outer disks 101, each offset by 90 °. They lie within the pitch circle 96 of the sun gear 23 of the planetary gear 21, the radius connecting the rotor shaft 5 to the pivot axis 108, and serve to suck in the blower air. Openings 122 in the sleeve 120 assigned to the suction openings 121 allow the blower air to pass radially outward. A guide surface 123 is assigned to each of the openings 122.
  • This guide surface 123 connects the sleeve 120 and the pivot axis 108 in a substantially rectangular arrangement in such a way that the blower air sucked in through the closable suction openings 121 and passing through the openings 122 can pass radially outward along the guide surfaces 123 through the opening 124.
  • This opening 124 is arranged between the pivot axis 108 and the cutting edge 73 of the cutting knife 71 facing away from the end face 125. This guide surface 123 prevents the undesired penetration of the blower air into the chamber 44.
  • a substantially perpendicular strut 126 is attached, which is close to. of the tip-127 of the wedge-shaped body 1.06 associated with the angle 116.
  • a radially inner chamber wall 128 of the chamber 44 is fastened approximately at right angles to this strut 126. This radially inner chamber wall 128 extends to the surface 111 of the wedge-shaped body 106 opposite the pivot axis 108.
  • This surface 111 therefore represents the part of a cylindrical outer surface in order to ensure, when the wedge-shaped body 106 is adjusted, a seal against falling, cut small wood 46 to the edge 127 of the radially inner chamber wall 128 adjacent to it.
  • no guide surfaces 123 are used, for example.
  • the seal between the surface 111 of the wedge-shaped body 106 and the edge 129 of the radially inner chamber wall 128 is to be designed in such a way that undesired penetration of blown air into the chamber 44 is avoided.
  • the small wood 2 to be shredded is fed to the rotor 17 through the feed shaft 10.
  • this feed occurs at an angle to the rotor shaft 5 or to the housing 4, while in the drum chopper 15 the small wood to be shredded is fed at right angles to the rotor shaft 5.
  • the small wood 2 to be shredded is covered by the
  • the small wood 2 to be shredded which for the sake of simplicity will also be referred to below as chips, is cut.
  • the chips pass through the openings arranged in front of the cutting edges 73 of the cutting machine, viewed in the direction of rotation 47, into the chambers 44 intended for receiving the chips. In the case of the drum chopper 15, this is only one, namely the chamber opening 119 itself. In the disk chopper 12, however, the chips 2 must pass through openings 87 and 88 provided in the plane guide surface 18 and in the disk 19.
  • the centrifugal force caused by the rotation of the rotor 17 throws the cut wood chips 46 radially outwards, whereby they are due to the small distance between the peripheral housing wall and the. radially inner parts, in particular sausage vanes 64, are held within the chambers 44. As soon as the chambers 44 have reached the tangentially engaging chute 11, the chips 46 can pass through it into the open.
  • the distance between the cutting edges 73 of the cutting knives 71 and the guide surfaces 18 and 105 must be changed.
  • the sun gear 23 of the planetary gear 21, which is rotatably mounted on the rotor shaft 5 is locked by means of the locking bolt 28.
  • the rotor 17 is rotated by hand so that the rotational movement of the rotor 12 is converted into a rotational movement of the planet gears 35 and 102, which must roll on the sun gear 23 as a result thereof.
  • the screw drive 40 or the crank drive 113 transmits this movement of the planet gears 35 or 102 to the flat guide surface 18 or the curved guide surfaces 105.
  • the former is displaced in the axial direction in accordance with the duration of the rotational movement of the planet gears 35, the direction of the axial movement of the guide surface 18 being able to be changed by changing the direction of rotation of the rotor 17.
  • the curved guide surfaces 105 are adjusted in principle in the same way, but with the difference that the movement of the curved guide surfaces 105 about the pivot axis 108 in a substantially radial directional ing.izot ', the difference in radius between the circle of the cutting edge 73 and described the cylindrical guide surfaces 105 will be modified. If the lock is released, the sun gear 23 can rotate about the rotor shaft 5 due to its rotary bearing.
  • the device according to the invention for comminuting small wood 2 that can be fed is not limited to the exemplary embodiments described, but can be varied in many ways. For example, it is possible to shred materials that have wood-like cutting properties, e.g. B. cardboard or paper. Furthermore, in the event that the cutting lengths of the material to be shredded do not have to be observed exactly, the shear bar can be dispensed with.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP82106155A 1981-07-10 1982-07-09 Dispositif de broyage pour bois transportable Expired EP0070004B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82106155T ATE31503T1 (de) 1981-07-10 1982-07-09 Vorrichtung zum zerkleinern von zufuehrbarem schwachholz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3127387 1981-07-10
DE3127387 1981-07-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP86113447.6 Division-Into 1982-07-09

Publications (3)

Publication Number Publication Date
EP0070004A2 true EP0070004A2 (fr) 1983-01-19
EP0070004A3 EP0070004A3 (en) 1984-09-05
EP0070004B1 EP0070004B1 (fr) 1987-12-23

Family

ID=6136660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106155A Expired EP0070004B1 (fr) 1981-07-10 1982-07-09 Dispositif de broyage pour bois transportable

Country Status (3)

Country Link
EP (1) EP0070004B1 (fr)
AT (1) ATE31503T1 (fr)
DE (2) DE3280323D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5780665A (en) * 1994-11-24 1998-07-14 Basf Aktiengesellschaft Preparation of halomethylbenzoyl cyanides

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745116C (de) * 1941-07-02 1944-02-26 Johannes Jung Vorrichtung zum Zerfasern von Rinden, Borken, Bast, Holzsplittern u. dgl.
US4135563A (en) * 1976-03-15 1979-01-23 Maucher Walter H Apparatus for reducing fiber material to chip form

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5780665A (en) * 1994-11-24 1998-07-14 Basf Aktiengesellschaft Preparation of halomethylbenzoyl cyanides

Also Published As

Publication number Publication date
DE3280323D1 (de) 1991-05-08
EP0070004B1 (fr) 1987-12-23
ATE31503T1 (de) 1988-01-15
DE3277864D1 (en) 1988-02-04
EP0070004A3 (en) 1984-09-05

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