EP0477166B1 - Machine pour enlever les renflements de la partie inférieure du trone d'un arbre - Google Patents

Machine pour enlever les renflements de la partie inférieure du trone d'un arbre Download PDF

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Publication number
EP0477166B1
EP0477166B1 EP91890212A EP91890212A EP0477166B1 EP 0477166 B1 EP0477166 B1 EP 0477166B1 EP 91890212 A EP91890212 A EP 91890212A EP 91890212 A EP91890212 A EP 91890212A EP 0477166 B1 EP0477166 B1 EP 0477166B1
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EP
European Patent Office
Prior art keywords
entrainment means
tree trunk
milling tool
tree
arms
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.)
Expired - Lifetime
Application number
EP91890212A
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German (de)
English (en)
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EP0477166A1 (fr
Inventor
Max Stingl
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Individual
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Individual
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Publication of EP0477166A1 publication Critical patent/EP0477166A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C7/00—Wood-turning machines; Equipment therefor
    • B27C7/005—Wood-turning machines; Equipment therefor by means of a rotating tool
    • 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
    • B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
    • 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
    • B27L11/007—Combined with manufacturing a workpiece

Definitions

  • the invention relates to a device for reducing the root ends of tree trunks with a device for supporting and rotating the tree trunk, and with at least one rotating milling tool that can be adjusted against the root end of the tree trunk.
  • the tree trunk to be processed is held by a holding device which engages the tree trunk from below and from above.
  • a milling device fixedly arranged in the machine frame of the known device with a milling tool, so that swellings are milled off at the root end of the tree trunk.
  • AT-PS 366 951 Another device for processing the root ends of tree trunks is known from AT-PS 366 951.
  • the tree trunk is held from above and below and rotated about its longitudinal axis with the aid of the holding devices.
  • the milling tool for machining the root end is pivoted from a rest position located under the trunk into an effective position adjacent to the trunk.
  • the tree trunk is held from below and from above and not during processing, ie when reducing the root end in its longitudinal direction moves and the milling tool rotates in an axis substantially parallel to the longitudinal axis of the tree trunk, so that there is an unfavorable pressure angle for the cutting of the knives with which the milling tool is equipped, namely an engagement transverse to the wood fibers.
  • the invention has for its object to provide a device of the type mentioned, with which, if necessary fully automatically, swellings at the root end of tree trunks of any diameter can be removed without a hold-down device acting from above on the tree trunk to be processed, and in which a favorable pressure angle of the milling tool results.
  • the device for supporting and rotating the tree trunk has a plurality of endless, circumferential drivers which are inclined to the horizontal and to the longitudinal axis of the tree trunk, which are preferably designed as toothed conveyor chains, and several arranged at the lower end of the driver, Support rollers can be placed laterally on the tree trunk, that the axis of rotation of the milling tool is oriented obliquely to the plane defined by the drivers and to the longitudinal axis of the tree trunk, and that the enveloping surface of the milling tool on the end adjacent to the drivers, the plane defined by the drivers from below, is essentially tagential touched.
  • the tree trunk When using the device according to the invention, it is sufficient to place the tree trunk on the endless, circumferential drivers, this lying on the support rollers with its long side and cantilevering freely with its root end to be machined over the driver adjacent to the milling tool.
  • the tree trunk When the drivers are put into operation, the tree trunk is not only set in rotation about its longitudinal axis, but it is turned by the inclined position of the drivers in cooperation with the lateral support rollers also moved in the longitudinal direction so that it is gradually moved against the milling tool. Due to the inclined position of the milling tool and the special design of the device for supporting and rotating the log, hold-down or lowering devices for the log are no longer required in the device according to the invention.
  • Another advantage of the device according to the invention is that the inclined position of the milling tool results not only in a wood-friendly machining of the root end (more favorable cutting angle than in the known devices), but also in a continuous workflow.
  • the milling tool is oriented from the bottom to the plane defined by the drivers, rising obliquely upwards. This measure ensures, without additional precautions, that the end of the root is reduced to a conicity which corresponds to the overall conicity of the tree trunk.
  • the drivers are guided in guides which can be pivoted about essentially vertical axes in the machine frame, then the feed speed can be adjusted as required by the choice of the inclined position of the drivers and it is appropriate An inclination of the tree trunk is also possible.
  • the ends of the guides for the drivers which are opposite the pivot axes, are connected in an articulated manner to a bar which is adjustable for pivoting the drivers by a drive in the direction of the longitudinal extension of the device.
  • This embodiment of the invention The device allows the drivers to be kept parallel and at the same time set in the desired inclination to the longitudinal direction of the device or the longitudinal axis of the tree trunk.
  • a simple embodiment of the device according to the invention is characterized in that the drivers on which the tree trunk rests when reducing its root end are driven by a common drive via cardan shafts. In this embodiment, there is no need to assign each driver its own drive without impairing its pivotability.
  • the support rollers are freely rotatably mounted in supports and that the supports are mounted on a common shaft and about a to the longitudinal axis of the Tree trunk parallel axis are pivotable.
  • the lateral support rollers can enclose a substantially right angle with the plane defined by the drivers.
  • the device according to the invention can also be characterized in that at least one roller is arranged in the area of the milling tool to support the guidance of the tree trunk during its processing, said at least one roller being freely rotatable in the machine frame is stored.
  • a roller preferably of two such rollers, which cannot be adjusted in the machine frame and is freely rotatable, is arranged, excessive swellings in the region of the root end are prevented from striking the milling tool with its full height.
  • These rollers can also be driven in rotation be.
  • lifting arms are provided between the drivers, which can be raised from a rest position under the conveyor chains for transferring the tree trunk into an obliquely upward-pointing position.
  • These lifting arms can be used both for inserting a tree trunk onto the carriers and also for ejecting the processing tree trunk onto the side of the device opposite the support rollers.
  • the lifting arms are preferably mounted on a common shaft, this shaft being mounted parallel to the longitudinal extension of the device in the region of the upper end of the drivers.
  • a milling tool for reducing the root ends of tree trunks is provided at both ends of the device.
  • a lateral support roller is assigned to each driver.
  • the device according to the invention is also provided that support arms pointing towards the lower ends of the catches are provided, the upper edges of which are aligned essentially parallel to the catches, and that the support arms, when support rollers are pivoted downward from their operative position, in are aligned substantially parallel to the upper edges of the support arms. It is preferred that the support arms are laterally offset from the drivers in the machine frame are mounted.
  • the device shown in the drawings for reducing the root ends 2 of tree trunks has a milling tool 3, which is fixedly mounted in the machine frame and has a drive motor and a double-bearing rotor shaft, into which turning knives are inserted, the turning knives being offset and arranged against one another.
  • the rotor shaft (cutter body) is made, for example, from one piece.
  • the axis of the oblique tool is oriented obliquely both in plan view (FIG. 1) to the longitudinal extent of the device, and ascending obliquely away from the motor (see FIG. 2), the envelope surface of the Milling tool touches the plane formed by drivers 5 from below substantially tangentially.
  • the machine frame 10 is a solid steel frame on which the various components of the device according to the invention are mounted.
  • roller 4 which can be freely rotated as well as driven.
  • This roller 4 which can also be oriented at an angle to the milling tool 3, serves as additional support in the region of the milling tool 3.
  • Two rollers 4 can also be provided.
  • a plurality of endlessly rotating carriers 5, which are mounted in guides, are provided, the carriers 5 in the exemplary embodiment shown being included as endless conveyor chains sawtooth-like assemblies are executed.
  • the guides for the conveyor chains 5 each consist of two steel plates which are mounted on the machine frame 10 so as to be pivotable about vertical axes. Bolts fastened in the machine frame 10 and steel bushes inserted in the guides can be provided as pivot bearings for the guides of the conveyor chains 5.
  • the endless conveyor chains of the carriers 5 run around chain wheels and around deflection wheels which are equipped with a chain tensioning device. Lateral guide rails for the conveyor chains 5 are also provided in the steel plates.
  • the conveyor chains of the carriers 5 are driven by a common drive via cardan shafts 6, the drive motor being, for example, an electric motor (continuously adjustable), a hydraulic drive or the like. is provided.
  • the conveyor chains of the carriers 5 are set in rotation by the drive 6, as indicated in FIG. 3, in such a way that the tree trunk rotates with its root end 2 against the direction of rotation of the milling tool 3.
  • the guides for the conveyor chains of the carriers 5 which, as can be seen from FIG.
  • the guides are connected in an articulated manner to a bar which in Embodiment shown is designed as a U-profile, and which is displaceable in the direction of the longitudinal extent of the device by a drive, not shown, which can be a hydraulic, an electric or a rack and pinion drive, so that the guides and thus the driver 5 in the desired inclination can be moved. It is also possible to move the conveyor chains 5, as indicated by broken lines in FIG. 1, against the inclined position shown in FIG. 1.
  • the upper dreams of the conveyor chains of the carriers 5 attacking the tree trunk define a plane which is oriented obliquely from the task side (FIG. 1 arrow 1).
  • roller-shaped support rollers 8 are provided, which are freely rotatable in supports.
  • the supports for the support rollers 8 are mounted on a common shaft which is rotatably mounted in the machine frame 10 parallel to the longitudinal extent of the device.
  • the drive rollers 8 can be tilted back and down into the position shown in FIG. 4 by a drive (not shown in more detail), in which they are aligned essentially parallel to the strands of the conveyor chains of the carriers 5 that engage the tree trunk.
  • a support roller 8 is assigned to each driver 5.
  • the support rollers 8 are shown in their operative position and in their swiveled-out position by broken lines. In the active position, the axes of the support rollers 8 run essentially perpendicular to the plane defined by the conveyor chains of the carriers 5.
  • support arms 11 are also provided, the upper edges of which are aligned essentially parallel to the conveyor chains 5.
  • the support arms 11 are fastened to the machine frame and project too freely in the direction of the lower ends of the carriers 5 (see FIG. 4).
  • At least one further driver 5 ′ which transports upwards at an angle, is installed with a toothed conveyor chain.
  • This conveyor chain is driven, for example, by a hydraulic or electric drive.
  • the strand of the conveyor chain of the carriers 5 ′ attacking the root end 2 moves upward and is aligned essentially parallel to the support rollers 8 and is preferably located in the support plane for the tree trunk defined by the support rollers 8.
  • lifting arms 9 are provided in the device according to the invention, which are mounted on a shaft rotatably mounted in the machine frame 10 parallel to the longitudinal extent of the device. By means of these lifting arms 9 it is possible to remove the processed tree trunk on the side from the device from which it was previously introduced into it. For this purpose, these lifting arms 9 are raised to the position shown in broken lines in FIG. 4.
  • a milling tool corresponding to the milling tool 3 can also be attached to the the other end of the device according to the invention can be mounted in the area of the drive 6 for the conveyor chains 5.
  • a tree trunk which may be necessary, in order to arrange its root end 2 on the side of the device on which the milling tool 3 is provided.
  • the device according to the invention can be used as follows:
  • a tree trunk is placed in the direction of arrow 1 in FIG. 1 on the driver 5 so that its root end 2 is in the area of the milling tool 3 and cantilevers freely over the driver 5 'adjacent to the milling tool 3.
  • the tree trunk is supported from below by the drivers 5 and laterally by the support rollers 8, with the drivers 5 'and the roller 4.
  • the conveyor chains of the carriers 5 are now set in motion by the common drive 6, as shown in FIG. 3, and the milling tool 3 is put into operation, so that the root end 2 is gradually reduced by the combined rotary and longitudinal movement of the tree trunk.
  • the rotational and longitudinal speed of the tree trunk can be adjusted to the most favorable level with the aid of the continuously variable drive 6 and / or by changing the inclined position of the drivers 5.
  • the tree trunk can also be moved in the direction of the milling tool 3 without the direction of movement of the conveyor chains of the drivers 5 having to be changed by bringing the drivers 5 into an inclined position, as is indicated by the broken line for a driver 5 in FIG. 1 .
  • the end of the root to be reduced is, in particular, without additional aids through the combined rotary and longitudinal movement of the tree trunk machined by milling without using a hold-down device.
  • the processed tree trunk can be tilted by the support rollers 8 into the position shown in FIG. 4 in a downstream transport device or in a storage box or be delivered to a further processing device.
  • the tree trunk can also be removed from the device against the direction of arrow 1 of FIG. 1 with the aid of the lifting arms 9, which are pivoted up into the position shown in broken lines in FIG. 4.
  • a particular advantage of the device according to the invention is the simple workflow and the wood-friendly processing of swellings of tree trunks, in particular in the area of the root end thereof, with high performance.
  • the inclined ones are essential for this.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Organic Insulating Materials (AREA)

Claims (15)

  1. Dispositif pour rogner les souches (2) de troncs d'arbres comprenant un dispositif pour soutenir et faire tourner le tronc d'arbre ainsi qu'au moins un outil de fraisage (3) rotatif pouvant être appuyé contre la souche (2), caractérisé par le fait que le dispositif pour soutenir et faire tourner le tronc d'arbre présente plusieurs entraîneurs (5) tournant sans fin qui sont inclinés par rapport à l'horizontale et à l'axe longitudinal du tronc et sont réalisés de préférence sous forme de chaînes transporteuses dentées, et plusieurs galets support (8) disposés à l'extrémité plus basse des entraîneurs (5) et pouvant être appliqués latéralement sur le tronc, que l'axe de rotation de l'outil de fraisage (3) est incliné par rapport au plan défini par les entraîneurs (5) et par rapport à l'axe longitudinal du tronc d'arbre et que la surface enveloppante de l'outil de fraisage (3) touche par le bas sensiblement tangentiellement le plan défini par les entraîneurs (5), à l'extrémité de l'outil voisine des entraîneurs (5).
  2. Dispositif selon la revendication 1, caractérisé par le fait que l'outil de fraisage (3) est incliné en montant vers le plan défini par les entraîneurs (5).
  3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que les entraîneurs (5) sont guidés dans des glissières qui peuvent pivoter dans le bâti de machine (10) autour d'axes sensiblement verticaux..
  4. Dispositif selon la revendication 3, caractérisé par le fait que les extrémités des glissières pour les entraîneurs (5) qui sont situées à l'opposé des axes de pivotement sont articulées sur une barre (7) qui peut être déplacée par un dispositif d'entraînement dans la direction du prolongement longitudinal du dispositif afin de faire pivoter les entraîneurs (5).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que les entraîneurs (5) sur lesquels le tronc repose lorsque sa souche (2) est rognée, sont entraînés par un dispositif d'entraînement (6) commun par l'intermédiaire d'arbres articulés.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé par le fait que les galets support (8) sont montés dans des supports de manière à pouvoir tourner librement et que les supports sont montés sur un arbre commun et peuvent pivoter autour d'un axe parallèle à l'axe longitudinal du tronc.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que les galets support (8) forment un angle sensiblement droit avec le plan défini par les entraîneurs (5).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que au moins un cylindre (4) destiné à renforcer le guidage du tronc travaillé est disposé dans la région de l'outil de fraisage (3).
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé par le fait que des bras élévateurs (9) sont prévus entre les entraîneurs (5), lesquels bras peuvent être soulevés d'une position de repos située plus bas que les entraîneurs (5) dans une position inclinée vers le haut pour le transfert du tronc.
  10. Dispositif selon la revendication 9, caractérisé par le fait que les bras élévateurs (9) sont montés sur un arbre commun.
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé par le fait qu'un outil de fraisage (3) destiné à rogner les souches (2) de troncs d'arbres est prévu à chacune des deux extrémités du dispositif.
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé par le fait qu'un galet support (8) est associé à chaque entraîneur (5).
  13. Dispositif selon l'une des revendications 1 à 12, caractérisé par le fait qu'il est prévu dans la région de l'outil de fraisage (3) un entraîneur (5') tournant sans fin qui est réalisé de préférence sous forme de chaîne transporteuse dentée et est orienté parallèlement aux galets support (8).
  14. Dispositif selon l'une des revendications 6 à 13, caractérisé par le fait qu'il est prévu des bras de soutien (11) qui sont dirigés vers les extrémités situées plus bas des entraîneurs (5) et dont les bords supérieurs sont orientés sensiblement parallèlement aux entraîneurs (5) et que les galets support (8) sont orientés sensiblement parallèlement aux bords supérieurs des bras de soutien (11) lorsqu'ils ont pivoté vers le bas à partir de leur position active.
  15. Dispositif selon la revendication 14, caractérisé par le fait que les bras de soutien (11) sont montés de manière fixe dans le bâti de machine (10) en étant décalés latéralement par rapport aux entraîneurs (5).
EP91890212A 1990-09-18 1991-09-16 Machine pour enlever les renflements de la partie inférieure du trone d'un arbre Expired - Lifetime EP0477166B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1896/90 1990-09-18
AT0189690A AT396669B (de) 1990-09-18 1990-09-18 Vorrichtung zum reduzieren der wurzelenden von baumstämmen

Publications (2)

Publication Number Publication Date
EP0477166A1 EP0477166A1 (fr) 1992-03-25
EP0477166B1 true EP0477166B1 (fr) 1994-04-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890212A Expired - Lifetime EP0477166B1 (fr) 1990-09-18 1991-09-16 Machine pour enlever les renflements de la partie inférieure du trone d'un arbre

Country Status (3)

Country Link
EP (1) EP0477166B1 (fr)
AT (2) AT396669B (fr)
DE (1) DE59101374D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1941979A1 (fr) 2007-01-08 2008-07-09 Baljer & Zembrod GmbH & Co. KG Dispositif destiné à la suppression ou la réduction de la formation de racines sur des troncs d'arbre

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397225B (de) * 1992-05-06 1994-02-25 Stingl Max Vorrichtung zum reduzieren der wurzelenden von baumstämmen
SE513907C2 (sv) * 1997-05-05 2000-11-27 Bruks Mekaniska Ab Maskin för rotreducering av stockar

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346028A (en) * 1966-08-08 1967-10-10 Runnion Ernest E Profiling of a log by use of cutter heads, and improved pulp chip produced thereby
AT303363B (de) * 1970-07-20 1972-11-27 Hans Herzog Entrindungsmaschine
SE427635B (sv) * 1977-11-04 1983-04-25 Bruks Mekaniska Ab Maskin for matrialavverkande bearbetning av foretredesvis langstreckta arbetsstycken

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1941979A1 (fr) 2007-01-08 2008-07-09 Baljer & Zembrod GmbH & Co. KG Dispositif destiné à la suppression ou la réduction de la formation de racines sur des troncs d'arbre
DE102007001991A1 (de) 2007-01-08 2008-07-10 Baljer & Zembrod Gmbh & Co. Kg Vorrichtung zum Entfernen oder Reduzieren des Wurzelanlaufs bei Baumstämmen

Also Published As

Publication number Publication date
ATA189690A (de) 1993-03-15
EP0477166A1 (fr) 1992-03-25
AT396669B (de) 1993-11-25
DE59101374D1 (de) 1994-05-19
ATE104200T1 (de) 1994-04-15

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