EP1704974B1 - Contrainte et fixation des couteaux d'une machine à écorcer à rotor annulaire - Google Patents

Contrainte et fixation des couteaux d'une machine à écorcer à rotor annulaire Download PDF

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Publication number
EP1704974B1
EP1704974B1 EP20060006191 EP06006191A EP1704974B1 EP 1704974 B1 EP1704974 B1 EP 1704974B1 EP 20060006191 EP20060006191 EP 20060006191 EP 06006191 A EP06006191 A EP 06006191A EP 1704974 B1 EP1704974 B1 EP 1704974B1
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EP
European Patent Office
Prior art keywords
knife
rotor
counter weight
elastic
debarking machine
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.)
Not-in-force
Application number
EP20060006191
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German (de)
English (en)
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EP1704974A2 (fr
EP1704974A3 (fr
Inventor
Josef Wiedemann
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Individual
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Individual
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Publication date
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Priority to EP20060006191 priority Critical patent/EP1704974B1/fr
Publication of EP1704974A2 publication Critical patent/EP1704974A2/fr
Publication of EP1704974A3 publication Critical patent/EP1704974A3/fr
Application granted granted Critical
Publication of EP1704974B1 publication Critical patent/EP1704974B1/fr
Not-in-force 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
    • B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
    • B27L1/08—Debarking or removing vestiges of branches from trees or logs; Machines therefor using rotating rings

Definitions

  • the invention relates to a Lochrotorentring machine with a rotor having a central through hole for performing the tree trunk to be debarked and an outer ring, with a clamping device for knife tools, wherein at least one tangentially in the direction of the tree trunk pivotally mounted knife arm is hinged tocomposingzing on the one in comparison to Weight of the knife arm significantly heavier counterweight acts by centrifugal force.
  • a Lockrotozentiondrungsmeschine of the generic type is from the US-A-3 409 057 and the US-A-3,058,500 known.
  • the counterweight is provided beyond the pivot bearing.
  • the counterweight is provided on the other side of the rotor ring.
  • Measuring arm and counterweight are firmly connected to each other via the shaft, which is rotatably mounted in a bearing of the rotor ring.
  • attenuators are provided in the form of tensionable spring assemblies that act on a lever assembly that is also connected to the shaft.
  • knife assemblies (five) are arranged distributed on a circumferential path.
  • an endless Gummibannband is provided, which is arranged to run over rollers on all counterweights and causes shock absorption.
  • the centrifugal forces are converted due to the leverage laws into usable energy for clamping the knife tools for regulating the contact pressure of the knife to the tree trunk, as well as for independent opening of the knife tools at standstill Rotor exploited, eg with the help of the circulating, prestressed rubber band.
  • the invention is based on the object to improve a clamping device such that each blade assembly is individually shock-damped and thus can avoid unevenness of the tree trunk and is simple in construction to be manufactured and assembled cost.
  • a weight - heavier than the debarking knife - is mounted on the opposite side of the support shaft of the knife tool at a point outside the center of the axle, that with the rotor running by the centrifugal force of each required pressure of the knife towards the center of the axle of the rotor results.
  • This weight can also be arranged offset to the knife shaft axis and connected via an elastic tool according to the law of levers with the blade shaft.
  • the clamping technology according to the invention can be brought from their use and their technical equipment ago in all other rotors suitable for use.
  • the clamping mechanism for the knife tools is mounted on one side of the hole rotor disc, on the opposite side of the disc are the knife tools themselves. Both are connected via a mounted shaft which is fixed to the rotor disc.
  • the torque of the clamping mechanism must first be brought to a shaft, which is usually provided with a keyway.
  • the mounted shaft brings the torque forces on the other side of the rotor disk to the knife tool. It is required in each case a corresponding holder for the torque absorption of the clamping mechanism and the knife tool.
  • the clamping device which is based on centrifugal force for the knife tools, is characterized in that the blade arm is connected via elastic means to the counterweight, whereby torque peaks between the blade arm and counterweight are buffered, but at the same time the centrifugal force is transmitted to the blade arm ,
  • the Lochrotorentring machine has a much heavier compared to the blade counterweight, which is mounted on the blade arm opposite side of the blade holding shaft.
  • the mounted knife holding shafts are mounted on the outer ring of the rotor.
  • the number of knife tools can vary as desired, for. B. from 2 to 8 knives, as well as the direction of rotation of the rotor.
  • the counterweight is mounted on the opposite side of the blade arm at a point outside the center of the knife support shaft that results in the running rotor by the centrifugal force of each required pressure of the knife towards the center of the rotor.
  • the counterweight is to be interpreted in its size so that the necessary knife pressure is ensured taking into account the forces acting on the counterweight centrifugal forces.
  • a self-contained elastic insert is provided which is firmly anchored both in the counterweight and in the blade holding shaft by suitable shaping and machining.
  • the material for the elastic insert can be chosen arbitrarily, but with the proviso that it is suitable to buffer all torque peaks between knife arm and counterweight.
  • the regulation of the blade voltage is determined exclusively by the speed of the rotor.
  • the centrifugal force is transmitted here, at the same time also achieves the desired damping.
  • the elastic aids such as rubber bands, springs and hydraulic components on the counterweight, they can work on both thrust and traction.
  • the elastic tools can be attached, depending on the arrangement - right or left of the blade shaft taking into account the lever law - and texture on thrust or tensile force base in order to achieve the effects described.
  • the aids must always be slightly biased.
  • the clamping mechanism and the knife tool are mounted together on one side of the rotor disc, with no interposed shaft with Keilnutfactn. On the opposite side of the rotor disk is only the receptacle for the ball bearing.
  • the knife tool can be bolted in a further embodiment directly to the socket on which the clamping mechanism is mounted by means of screws and cone nuts, such as a truck wheel.
  • the clamping mechanism and the knife tool can also be mounted on a fixedly mounted on the rotor disk shaft journals.
  • a cover plate can be provided between the knife tool and the clamping mechanism.
  • Fig. 1 shows a hole rotor in front view with respect to the mounted on the outer ring of the rotor 8 knife tools, the stored blade holding shafts 4 and their center axes.
  • the number of knife tools can vary as desired, for. B. from 2 to 8 knives, as well as the direction of rotation of the rotor.
  • the counterweight 2 is compared to the knife arm 1 much heavier.
  • Knife arm 1 and counterweight 2 are each opposite to each other at the ends of the blade holding shafts 4 with the resulting flight zones a u. b arranged.
  • Fig. 2 shows a perforated rotor according to the invention in rear view with respect to the attached to the outer ring of the rotor 8 counterweights 2, the mounted blade holding shafts 4 and between the blade shaft 4 and counterweight 2 incorporated elastic insert 3.
  • knife arm 1 and counterweight 2 are each opposite to each other at the ends of the blade holding shafts 4 with the resulting flight zones a u. b arranged.
  • Fig. 3 shows the mounted blade shaft 4, at one end of the blade arm and at the other end of the counterweight 2 are attached.
  • Knife arm 1 and counterweight 2 are in turn mounted and fixed to the outer ring of the hole rotor 8.
  • the elastic insert 3 between knife arm 1 and counterweight 2 is necessary to buffer jerky torque changes of the blade arm 1 in its effect on the counterweight 2.
  • a star-shaped rubber buffer is selected, which is firmly anchored once with its toothing in the toothing of the knife shaft 4 and once in the toothing of the counterweight 2.
  • the elastic insert 3 is movable in any direction, it can easily rotate between its two gears.
  • Fig. 4 shows the rear view of the hole rotor with the counterweight 2 for the debarking and the arrangement of additional tools (6) with low clamping force for knife span and closing the knife, such.
  • B rubber band, spring, hydraulic component.
  • the additional blade tensioning means 6 assumes here a certain proportion of the balancing effect of the counterweight 2 on the centrifugal force tendency of the blade arms 1, so that it can be selected somewhat more easily.
  • the percentage of counterweight 2 and tool 6 for knife margins on the increase of the knife pressure can be chosen arbitrarily.
  • Fig. 5 shows the rear view of the hole rotor with the counterweight 2 for the debarking knife and the arrangement of additional aids 7 (such as rubber band, spring, hydraulic component) with low clamping force for knife clamping and opening the knife.
  • aids 7 reduce the centrifugal forces occurring in the counterweight 2 to their traction.
  • the counterweight 2 must therefore be chosen heavier by the tensile force of the aid 7 in order to maintain the blade contact pressure constant. With decreasing rotor speed or at a standstill of the rotor then pulls the elastic tool 7 due to its stored energy in the counterweight 2 to the rotor center, which has the consequence that the knife tools open automatically.
  • the tools used 7, depending on their nature and arrangement, work on the counterweight 2 on both thrust and traction.
  • Fig. 6 shows the offset to the knife shaft axis 4a on the side facing away from the knife tools side of the rotor outer ring 8 (bearing 9) counterweights 2a with the elastic tools 10, via which they are 2a connected to the blade shaft 4a according to the lever law.
  • these 10 can work on thrust or traction.
  • the application example shows the tension variant.
  • the elastic aids 11 corresponding to the tools 6 and 7 be considered taking into account the lever law, depending on the nature and arrangement of the counterweight 2a act on thrust or traction.
  • Aid 11 are attached taking into account the leverage law.
  • elastic connection 10 of counterweight 2a and knife support shaft 4a - it can be mounted in several variants - is the in Fig. 3 shown, stored in elastic insert 3 superfluous.
  • Fig. 7 shows in cross section a rotor disk 8 with the top mounted pulley 20.
  • To the left of the rotor disk 8 is the rotary joint (ball bearing) 9.
  • To the right of the rotor disk 8 is fixed to the rotor disk shaft 16 with the seated ball bearing 15 can be seen.
  • the backup of the two ball bearings 9, 15 via lock nuts 15 a.
  • the bush 13 On the two ball bearings 15, the bush 13 is seated, on this bushing 13, in turn, the entire clamping mechanism, which is anchored on both the sleeve 13 and the rotor disk 8. Laterally on this bush 13, on the side facing away from the rotor, threaded holes 12a are incorporated into this, which allow the attachment of a knife tool by means of screws 12 and cone nuts directly to the bushing 13 clearance.
  • the ball bearing 9 for receiving the rotor disk 8 can optionally also be placed below the clamping mechanism.
  • a cover plate 4 is installed between the knife tool and clamping mechanism.
  • Fig. 8 shows the attachment of an essential compared to the main blade 23 additional blade 21 on the arm 1 of a knife tool. It is screwed with the cone screws 12 laterally on the blade arm 1. The necessary stability brings the main blade 23. The main blade arm 1 is kept a little shorter and the additional blade 21 much weaker than the main blade 23 is selected.
  • Fig. 9 also shows the attachment of an additional blade 21 on the main blade 23, but here approximately on the last quarter of the main blade length.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Harvester Elements (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (13)

  1. Machine à écorçer à rotor annulaire avec un rotor (8) ayant un trou de passage central pour passer à travers le tronc d'arbre à écorçer et un anneau extérieur avec un dispositif de contrainte pour des couteaux, à l'anneau extérieur au moins un bras de couteau pivotant (1) tangentiellement en direction du tronc d'arbre étant approché, sur lequel agit un contrepoids beaucoup plus lourd (2) par rapport au poids du bras de couteau (1) par la force à centrifuge.
    caractérisés par le fait que le bras de couteau (1) est lié avec le contrepoids (2, 2a) par des moyens élastiques (3, 10) et que la valeur du contrepoids (2, 2a) est ajustée de telle manière que la pression du couteau nécessaire en tenant compte des forces à centrifuge du contrepoids (2) agissant sur le bras couteau (1) est guarantie.
  2. Machine à écorçer à rotor annulaire selon la revendication 1, caractérisée par le fait que le contrepoids (2) en face du bras de couteau (1) est placé à un point en dehors du centre de l'axe d'arrêt du bras de couteau (4) de telle manière que la pression nécessaire des couteaux se règle vers le centre de l'axe du rotor par la force à centrifuge lorsque le rotor est en marche.
  3. Machine à écorçer à rotor annulaire selon la revendication 1, caractérisée par le fait que le bras de couteau (1) et le contrepoids (2) sont situés à pivotement autour d'un axe commun, que le moyen élastique (3) est formé comme une pièce d'insertion élastique et que ledit moyen est prévu entre un axe d'arrêt de couteau (4) pivotant, auquel le bras de couteau (1) est fixé et le contrepoids (2).
  4. Machine à écorçer à rotor annulaire selon l'une des revendications précédentes, caractérisée par le fait que la régulation de la contrainte des couteaux et par conséquent la force de pression des couteaux au tronc d'arbre est définie par la vitesse du rotor.
  5. Machine à écorçer à rotor annulaire selon la revendication 4, caractérisée par le fait qu'en supplément aux poids (2) d'autres ressources (6) avec une force de contrainte minime pour tendre et fermer les couteaux (1), en particulier des rubans caoutchoutés, des ressorts, des composants hydrauliques sont prévus, étant placés au contrepoids (2) d'une manière appropriée et exercant une force de poussée ou de traction sur le contrepoids (2), selon leur qualité et leur arrangement, lesdits ressources (6) étant pré-tendues légèrement à des couteaux fermés.
  6. Machine à écorçer à rotor annulaire selon la revendication 4, caractérisée par le fait qu'en supplément d'autres ressources élastiques (7) en particulier des rubans caoutchoutés, des ressorts et des composants hydrauliques avec une force de contrainte minime sont placés aux contrepoids (2, 2a), ces derniers se chargeant d'énergie au moyen des forces à centrifuge agissantes sur le contrepoids (2, 2a) lorsque le rotor est en marche et la livrant pour ouvrir les couteaux dans le cas d'une réduction de la vitesse et l'arrêt du rotor, le contrepoids (2, 2a) autour de la composante de force tractive de la ressource élastique (7) étant choisi plus lourd, pour que ladite ressource élastique (7) soit chargeable par le contrepoids (2, 2a) au moyen de l'énergie de la force centripète nécessaire lorsque le rotor est en marche et les ressources (7) sont pré-tendues légèrement à des couteaux ouverts.
  7. Machine à écorçer à rotor annulaire selon la revendication 2, caractérisée par le fait que le contrepoids (2a) est situé sur le côté détourné des couteaux (1) de l'anneau extérieur du rotor (8), le dernier étant placé en quinconce à l'axe de couteau et que ledit contrepoids est lié avec l'axe de couteau (4a) au moyen d'une ressource élastique (10) selon l'effet de levier.
  8. Machine à écorçer à rotor annulaire selon l'une des revendications précédentes,
    caractérisée par le fait que plusieurs couteaux sont prévus à l'anneau extérieur se dispersant sur ce dernier en intervalles réguliers.
  9. Machine à écorçer à rotor annulaire selon l'une des revendications précédentes, caractérisée par le fait que le contrepoids (2) et le couteau ainsi que les moyens élastiques (3, 10) sont placés sur un côté du disque de rotor (9).
  10. Machine à écorçer à rotor annulaire selon la revendication 3, 8 ou 9, caractérisée par le fait que le couteau est vissé à une douille (13) par des vis et des écrous coniques (12) sur laquelle les ressources élastiques (3) sont fixées.
  11. Machine à écorçer à rotor annulaire selon la revendication 3, 8 ou 9, caractérisée par le fait que les moyens élastiques (3) et le couteau sont situés sur un pivot d'axe (6) étant fixé ferme sur le disque de rotor (9).
  12. Machine à écorçer à rotor annulaire selon la revendication 1, caractérisé par le fait qu'une tôle de protection (7) se trouve entre le couteau et les moyens élastiques (3).
  13. Machine à écorçer à rotor annulaire selon la revendication 1, caractérisée par le fait qu'un couteau d'ecorçage beaucoup plus petit par rapport au couteau principal est fixé latéralement sur un bras de couteau étant un peu raccourci par deux vis avec des écrous coniques en dessus (2) ou d'autres écrous entaillés.
EP20060006191 2005-03-24 2006-03-24 Contrainte et fixation des couteaux d'une machine à écorcer à rotor annulaire Not-in-force EP1704974B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20060006191 EP1704974B1 (fr) 2005-03-24 2006-03-24 Contrainte et fixation des couteaux d'une machine à écorcer à rotor annulaire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05006513 2005-03-24
EP20060006191 EP1704974B1 (fr) 2005-03-24 2006-03-24 Contrainte et fixation des couteaux d'une machine à écorcer à rotor annulaire

Publications (3)

Publication Number Publication Date
EP1704974A2 EP1704974A2 (fr) 2006-09-27
EP1704974A3 EP1704974A3 (fr) 2006-12-06
EP1704974B1 true EP1704974B1 (fr) 2008-11-12

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EP20060006191 Not-in-force EP1704974B1 (fr) 2005-03-24 2006-03-24 Contrainte et fixation des couteaux d'une machine à écorcer à rotor annulaire

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009014887U1 (de) 2009-12-18 2010-04-08 Wiedemann, Josef Lochrotorentrindungsmaschine
DE202011000347U1 (de) 2011-02-15 2011-06-09 Wiedemann, Josef, 95367 Lochrotorentrindungsmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104381032B (zh) * 2014-09-22 2016-03-09 山东理工大学 一种冬枣环剥机
CN104875263A (zh) * 2015-06-25 2015-09-02 吉首大学 螺旋筒螺旋桨式桑枝去皮装置
CN110355847A (zh) * 2019-08-14 2019-10-22 陈品颖 一种树木加工用剥皮装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058500A (en) * 1959-08-31 1962-10-16 Lloyd B Smith Ring type debarker
US3409057A (en) * 1966-02-28 1968-11-05 Anatoly Petrovich Rotary-type machine for stripping bark from round wood
JPS5953163B2 (ja) * 1983-01-10 1984-12-24 株式会社 石田鉄工所 原木の皮剥方法並びに装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009014887U1 (de) 2009-12-18 2010-04-08 Wiedemann, Josef Lochrotorentrindungsmaschine
EP2596926A2 (fr) 2009-12-18 2013-05-29 Josef Wiedemann Ecorceuse à rotor annulaire
DE202011000347U1 (de) 2011-02-15 2011-06-09 Wiedemann, Josef, 95367 Lochrotorentrindungsmaschine

Also Published As

Publication number Publication date
EP1704974A2 (fr) 2006-09-27
EP1704974A3 (fr) 2006-12-06

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