EP0229752A2 - Tambour rotatif pour produire des copeaux de bois - Google Patents

Tambour rotatif pour produire des copeaux de bois Download PDF

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Publication number
EP0229752A2
EP0229752A2 EP87890007A EP87890007A EP0229752A2 EP 0229752 A2 EP0229752 A2 EP 0229752A2 EP 87890007 A EP87890007 A EP 87890007A EP 87890007 A EP87890007 A EP 87890007A EP 0229752 A2 EP0229752 A2 EP 0229752A2
Authority
EP
European Patent Office
Prior art keywords
rotor
blower
arms
wood
chips
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.)
Withdrawn
Application number
EP87890007A
Other languages
German (de)
English (en)
Other versions
EP0229752A3 (fr
Inventor
Maximilian Starchl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0229752A2 publication Critical patent/EP0229752A2/fr
Publication of EP0229752A3 publication Critical patent/EP0229752A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B27L11/002—Transporting devices for wood or chips

Definitions

  • the invention relates to a drum chipper for cutting wood for the production of chips, with a rotor with several rotor arms with attached chopping knives, to which the wood to be processed is fed transversely to the rotor axis, the cutting of all chopping knives during the rotary movement of the rotor essentially run without a gap past a single counter knife or a single anvil bar, which counter knife or which anvil bar extends over the entire axial length of the rotor, whereas the chopping knives are divided in the direction of the rotor axis and are arranged offset along the rotor circumference, and the rotor being at least partially is surrounded by a housing which, at least in its lower area, which is adjacent to the counter knife or the anvil bar, is designed as a strainer basket with openings, the dimensions of which determine the size of the wood chips, and the wood chips of wing arms of a blower passing the strainer basket it will be ejected which are longer than the rotor arms.
  • Such a drum chipper has the advantage that any wood chips, in particular residual wood or waste wood, but also not de-branched tree trunks and bark and possibly other materials, can be processed evenly and quickly down to the smallest shredded unit, without the need for retrofitting or knife adjustment.
  • the energy consumption is low and even, since the chopping knives only work over a partial length of the counter knife or the anvil bar.
  • the size of the openings in the sieve basket determines the size of the wood chips, the wood chips being ejected by means of the wing arms after passing through the sieve basket. These wing arms suck in the wood chips passing through the screen basket.
  • the object of the invention is to avoid these disadvantages and to make the removal of the wood chips that have passed through the sieve completely reliable.
  • the invention solves this problem in that a gutter forming a sliding surface for the wood chips is arranged below the strainer to incline the wing arms. The wood chips are reliably guided to the wing arms of the blower via this gutter, the wood chips being delivered to the blower continuously so that the blower cannot be overloaded.
  • the accommodation of this gutter presents no difficulties, since the larger length of the fan wing arms results in a free space in comparison to the rotor arms under the rotor or under the screen basket.
  • the gutter connects to the edge of the screen basket facing away from the fan and extends at an even incline to the lower edge of the fan space. This results in the greatest possible incline for the gutter, so that slipping of the wood chips is promoted. It is expedient according to the invention if the gutter is bent transversely to the sliding direction of the wood chips, preferably along an arc of a circle, since this prevents the wood chips from sliding off the side of the gutter when they slide off. Particular advantages result in the context of the invention if the wing arms of the blower extend to the lower edge of the gutter, since in this way the chips which are fed to the blower via the gutter are carried best.
  • the wing arms of the blower are expediently provided with flyweights at their free ends in order to achieve a smooth running of the blower and to bridge peak loads.
  • the simplest design results if the fan blades of the fan are arranged coaxially to the rotor, since then - provided the same speed of rotation of the rotor and the fan - a single continuous shaft can be used for the rotor and the fan.
  • the arrangement is suitably made by corresponding relative displacement of the individual chopping knives so that only a single chopping knife is at work at the same time in order to keep the load on the drive motor as low as possible.
  • Fig.1 shows the drum chipper in axial section
  • Fig.2 shows a section along the line II-II of Fig.1.
  • a rotor 2 is rotatably mounted, which has a plurality of arms 3, which have chopping knives 4 at their ends, which are interchangeably fastened to the rotor arms 3 in a manner not shown.
  • the cutting edges of the chopping knives 4 run essentially parallel to the rotor axis 5.
  • the chopping knives 4 are offset both in the circumferential direction of the rotor 2 and in the direction of the rotor axis 5, which is driven by a pulley 6, in such a way that during the rotational movement of the Rotor 2 in the direction of arrow 7 (FIG. 2) only a single chopping knife 4 or very few of these chopping knives is or are in use.
  • the cleaver 4 which is in use at any given time, interacts with an anvil bar 8 which extends over the entire axial length of the rotor 2 and which can be designed as a counter knife.
  • the arrangement is such that only a slight gap 8 ⁇ remains between the respective cleaver 4 and the anvil bar 8.
  • the wood material to be cut e.g. pieces of residual wood or a tree trunk, is fed to the rotor 2 transversely to the direction of the rotor axis 5 and in the direction of the arrow 25 (FIG. 2) through an insertion opening 26 of the housing 1 in the longitudinal direction of the piece of wood to be cut such that the leading end of the piece of wood to be machined rests on the anvil bar 8.
  • the bottom wall of the housing 1 is designed as an interchangeable strainer basket 9, which lies below the rotor 2 and is provided with a multiplicity of openings 10 through which the wood chips can exit.
  • the size of these openings 10 thus determines the size of the wood chips. If the split-off pieces of wood are so large that they cannot exit through these openings 10, these pieces of wood are again taken along by the respective rotor arm 3 for rotation around the rotor axis 5 and flung in the direction of arrow 7 to the anvil bar 8.
  • the pieces of wood entrained in this way by the rotor arms 3 are, however, not merely passed on along the screen basket 9.
  • This space 11 is closed at the bottom by an inclined gutter 13, which leads the wood chips to a blower 14, which on the rotor axis 5 has non-rotating wing arms 15 mounted in a rotationally fixed manner, which are provided at their free ends with flyweights 16 to achieve smooth running or to bridge peak loads of the drive motor, not shown, which simultaneously drives the rotor 2 and the wing arms 15 of the blower 14, which sit on an extension of the rotor axis 5.
  • These wing arms 15 run in a housing 17, which has an inlet opening 16 on its wall facing the rotor 2 for the wood chips fed via the gutter 13. This opening is opposite an opening 19 in the wall of the housing 1 facing the blower 14.
  • the blower 14 conveys the wood chips supplied to it into an ejection nozzle 20, on which a sack or a delivery line or the like. can be connected.
  • the mutually facing walls of the blower 14 and the housing 1 can be combined into a common wall, so that the openings 18, 19 coincide.
  • the length of the wing arms 15 arranged coaxially to the rotor 2 is greater than the length of the rotor arms 3, as a result of which sufficient space is created below the rotor 2 or below the screen basket 9 for the inclination of the gutter 13 in the form of an inclined trough.
  • This inclination is uniform, with the gutter resting directly on the lower edge of the strainer basket 9 at its end facing away from the blower 14 and leading to the lower edge 21 of the blower chamber 22.
  • the gutter is bent up at its side edges 23, preferably along an arc of a circle, so that the gutter 13 takes the form of an inclined depression, which prevents the chips from slipping sideways from the gutter 13.
  • the wood chips therefore slip on the gutter 13 only in the direction of the arrow 24 through the opening 18 into the housing of the blower 14.
  • the slipping of the chips on the gutter 13 is supported by the air flow indicated by arrows, which is caused by the rotating arms 3 of the rotor 2.
  • a feed device can be provided for the material to be machined, e.g. Ripple roller pairs that feed the material to be machined to the rotor 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP87890007A 1986-01-17 1987-01-15 Tambour rotatif pour produire des copeaux de bois Withdrawn EP0229752A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT114/86 1986-01-17
AT11486A AT385231B (de) 1986-01-17 1986-01-17 Trommelhackmaschine

Publications (2)

Publication Number Publication Date
EP0229752A2 true EP0229752A2 (fr) 1987-07-22
EP0229752A3 EP0229752A3 (fr) 1989-12-06

Family

ID=3481891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890007A Withdrawn EP0229752A3 (fr) 1986-01-17 1987-01-15 Tambour rotatif pour produire des copeaux de bois

Country Status (2)

Country Link
EP (1) EP0229752A3 (fr)
AT (1) AT385231B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126910C1 (fr) * 1991-08-14 1992-09-24 Georg Weiss Gmbh, 8201 Schechen, De
WO1995013171A1 (fr) * 1993-11-08 1995-05-18 Valtion Teknillinen Tutkimuskeskus Procede et installation a dechiqueteur destines a transformer une biomasse, notamment afin de produire un combustible a partir de dechets forestiers, et a l'evacuer du lieu d'abattage
EP0773068A3 (fr) * 1995-11-10 1997-06-04 GEORG WEISS GmbH Machine de broyage avec un ventilateur
RU2147930C1 (ru) * 1998-06-09 2000-04-27 Закрытое акционерное общество Научно-исследовательский институт "ВНИИДРЕВ" Мельница для измельчения древесного сырья
DE10221308A1 (de) * 2002-05-14 2003-12-11 Miroslav Prochazka Hackmaschine
EP4269374A1 (fr) * 2022-04-28 2023-11-01 Sobex sp. z o.o. Milieu de croissance comprenant des fibres de bois et procédé de production de fibres de bois

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402810B (de) * 1994-09-06 1997-09-25 Hofer Otto Vorrichtung zum verarbeiten von holzmaterial
FI112185B (fi) 1999-05-28 2003-11-14 Andritz Patentverwaltung Laite hakkeen ylisuuren jakeen pienentämiseksi
DE102013202451B4 (de) * 2013-02-14 2014-08-21 Technische Universität Dresden Vorrichtung zur Zerkleinerung von Holz mit Energiespeicher im Antriebsstrang

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559701A (en) * 1946-05-22 1951-07-10 M And M Wood Working Company Hog machine having rotary cutter and feed conveyer
US2869793A (en) * 1953-06-19 1959-01-20 William T S Montgomery Machine for punching and cutting of wood
US3986543A (en) * 1975-07-21 1976-10-19 Kimball International, Inc. Rotary cutter knife
US4474336A (en) * 1980-07-07 1984-10-02 Gehl Company Method and means for adjusting a forage harvester shear bar relative to a rotating chopping cylinder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126910C1 (fr) * 1991-08-14 1992-09-24 Georg Weiss Gmbh, 8201 Schechen, De
EP0527485A1 (fr) * 1991-08-14 1993-02-17 GEORG WEISS GmbH Machine à déchiqueter
WO1995013171A1 (fr) * 1993-11-08 1995-05-18 Valtion Teknillinen Tutkimuskeskus Procede et installation a dechiqueteur destines a transformer une biomasse, notamment afin de produire un combustible a partir de dechets forestiers, et a l'evacuer du lieu d'abattage
EP0773068A3 (fr) * 1995-11-10 1997-06-04 GEORG WEISS GmbH Machine de broyage avec un ventilateur
RU2147930C1 (ru) * 1998-06-09 2000-04-27 Закрытое акционерное общество Научно-исследовательский институт "ВНИИДРЕВ" Мельница для измельчения древесного сырья
DE10221308A1 (de) * 2002-05-14 2003-12-11 Miroslav Prochazka Hackmaschine
DE10221308B4 (de) * 2002-05-14 2007-04-12 Prochazka, Miroslav, Dipl.-Ing. Hackmaschine
EP4269374A1 (fr) * 2022-04-28 2023-11-01 Sobex sp. z o.o. Milieu de croissance comprenant des fibres de bois et procédé de production de fibres de bois

Also Published As

Publication number Publication date
ATA11486A (de) 1987-08-15
EP0229752A3 (fr) 1989-12-06
AT385231B (de) 1988-03-10

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