WO2000065900A1 - Tete d'abatteuse-tronçonneuse et procede correspondant - Google Patents

Tete d'abatteuse-tronçonneuse et procede correspondant Download PDF

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Publication number
WO2000065900A1
WO2000065900A1 PCT/FI2000/000373 FI0000373W WO0065900A1 WO 2000065900 A1 WO2000065900 A1 WO 2000065900A1 FI 0000373 W FI0000373 W FI 0000373W WO 0065900 A1 WO0065900 A1 WO 0065900A1
Authority
WO
WIPO (PCT)
Prior art keywords
timber
members
support
harvester head
feed
Prior art date
Application number
PCT/FI2000/000373
Other languages
English (en)
Other versions
WO2000065900B1 (fr
Inventor
Turkka Lastunen
Original Assignee
Lako Oy
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 Lako Oy filed Critical Lako Oy
Priority to AU44068/00A priority Critical patent/AU4406800A/en
Publication of WO2000065900A1 publication Critical patent/WO2000065900A1/fr
Publication of WO2000065900B1 publication Critical patent/WO2000065900B1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/08—Felling trees

Definitions

  • the present invention relates to a harvester head according to the preambles of the claims presented later, and to a method in the harvester head, the harvester head being used for handling timber in logging.
  • felling or harvester heads are generally used, which are mounted on different frame machines.
  • the harvester head works so that it is used for gripping the trunk of a tree to be chopped down near the earth surface, and the cutting device in the harvester head, in most cases a chain saw, cuts the tree.
  • the harvester head may also be used for handling already felled timber.
  • the felled trunk is fed through the harvester head so that the blades or other similar members in it prune and/or bark the trunk, and the cutting device cuts it into blocks of suitable sizes.
  • the harvester head is connected to the frame machine, for example a forest machine or an excavator, from which it receives its driving power through transmission members.
  • the control of the harvester head functions and the registration of measuring data may be arranged in different ways, normally with the help of a computer-based measuring and control system designed for the harvester head.
  • An important part of the efficient and exact operation of the harvester head is the measuring of the cutting length of timber to be handled, i.e. the feed length of timber.
  • exact measuring devices and members providing them with information in the harvester head, timber may be cut exactly to the desired measures and, at the same time, an exact register may be kept, for example, concerning the amount of felled and handled timber.
  • the harvester head is attached to the hydraulically operated boom assembly of the frame machine.
  • the members of the harvester head are usually hydraulically or electrically driven and connected to the hydraulic and electrical systems of the frame machine.
  • the driver of the frame machine usually controls and adjusts the functions of the harvester head from the control cabin of the frame machine with the help of so-called control handles, which are connected to the said measuring and control system or device, which again is connected to the electrical and hydraulic system of the frame machine.
  • a mechanically operated roller or other member refers to a member, the rotation of which is controlled by a motor.
  • Freely rotating refers to a member, the rotation of which is not controlled by a motor, but the member is fitted to rotate according to the movement of timber in connection with it. It has to be possible to move at least part of the said support and feed members in relation to each other so that the trunk to be handled is received to the grip of the harvester head.
  • the harvester heads thus have a clamp-like structure, so that upon gripping the tree, the clamp is opened and set around the trunk.
  • the clamp is closed, generally by moving hydraulically movable support, feed or other gripping members.
  • the hydraulically controlled grip of the support and feed members may have an effect on the hold of the contact between the said members and the trunk.
  • a slippery trunk or a trunk with a large diameter may be pressed with a slightly bigger force than a smaller trunk or well holding timber in order to keep the hold sufficient.
  • As the trunk thus has been gripped it is made to move in the harvester head in its own longitudinal direction along its transfer track, by using timber feed members being in connection with the trunk.
  • the object of the present invention is to provide a device with which the above - mentioned drawbacks in the known technique may be minimised.
  • the body of the harvester head of a timber harvesting machine includes at least two support and feed members for timber to be handled, timber to be handled being transferred in the harvester head in the longitudinal direction with the help of these members.
  • Feeding refers to the transfer of timber to be handled in the harvester head
  • the support and feed members refer to the members, with which the said longitudinal transfer is achieved.
  • the substantially straight track, along which timber travels in the harvester head, is called the transfer track for timber.
  • the said at least two support and feed members are fitted on different sides of timber for the smooth support of the timber.
  • at least some support and feed members are found substantially at the same level transverse to the said transfer track.
  • the members do not have to be at the said same level, and there may be several said levels, but the members arranged on different sides of the transfer track have to support timber in an even way so that timber is kept straight upon handling.
  • At least one of the said support and feed members is mechanically operated, and at least one rotates freely.
  • the mechanically operated member is required to transmit driving force for making timber to move; preferably, there are at least two mechanically operated members.
  • the freely rotating support and feed members at least one is provided with some kind of a revolution counter, i.e. it works as the measuring member for the transfer range of timber.
  • the revolution counter here refers to any measuring member, with which it is possible to measure the range which the surface of the member against the timber travels.
  • the harvester head of the invention also requires power transmission members, such as a hydraulic or electric motor, for driving the at least one mechanically operated timber support or feed member.
  • the device of the invention further includes members with which the said support and feed members, or at least some of them, may be transfeired in relation to each other, i.e. the reciprocal distance between them may be changed.
  • This mechanism makes it possible for the harvester head to grip the trunk of timber in a clamp-like manner and to press the trunk with desired strength.
  • the freely rotating measuring wheel or a similar member is fitted as a part of the harvester head structure operating in a clamp-like manner.
  • the support or feed member provided with the revolution counter may be moved separately from some other timber support and feed members, when desired.
  • the measuring wheel or a similar member may be detached from the timber surface and pressed again against timber at the same time as at least one other support or feed member keeps the timber to be handled in its grip.
  • Such a member provided with the revolution counter may be arranged to be moved on its own or, for example, all support and feed members at the one and same level may be detached from the timber surface simultaneously while the members at the other levels keep timber in place.
  • At least one mechanically operated and at least one freely rotating measuring wheel or a similar member is arranged substantially at the same level transverse to the transfer track of timber to be handled.
  • the adjusting members for the reciprocal distance of the timber support and feed members or the transmission members for the mechanically operated timber support and feed member, or both these members are hydraulically driven.
  • the freely rotating member provided with the revolution counter may be detachable from the harvester head and thus changeable to a similar or a mechanically operated support and feed member.
  • the revolution counter has a pulse sensor or some other kind of sensor measuring the feed range.
  • An advantageous embodiment of the invention comprises data transmission members for transmitting the measuring data from the revolution counter, for example, to the measuring device in the harvester.
  • the most important advantage of the invention is that the measuring result for the timber feed range and thus the measuring result for the cutting length is exact, as the measuring result genuinely indicates the range travelled by timber, and not the rotation of the mechanically operated member. It is also as assistance for the exactness that the force, with which the freely rotating member provided with the measuring member compresses to the trunk to be handled, may be adjusted to suit the situation at hand, when necessary, Preferably, the timber feed members and member moving members work hydraulically.
  • An advantage of an advantageous embodiment of the invention is that cleaning the measuring wheel or a similar member, for example, from timber bark is easy and fast, as the said member may be moved separately from some or all other timber support and feed members.
  • Such a measuring wheel or a similar member is easy to clean, and normally it will become clean by itself, by releasing the member from the timber surface while the other support and feed element keep the timber in the harvester head in their grip. After the cleaning, the measuring wheel or a similar member is pressed back against the timber, and the work may be continued.
  • the diameter of the measuring wheel or a similar member of the invention may easily be made larger than the measuring wheel fitted fixedly to the body of the harvester head, so that its measuring exactness becomes better and rubbish will not so easily block it.
  • An advantage of an embodiment of the invention is that the timber is kept sufficiently straight, as at least one mechanically operated and at least one freely rotating measuring wheel or a similar member is fitted substantially to the same level transverse to the transfer rail of the timber to be handled.
  • an advantage of an embodiment of the invention is that the freely rotating member provided with the revolution counter may be released from the harvester head, when necessary, for example upon breaking, for service or easy and fast change.
  • the freely rotating member may also be changed to a mechanically operated member which fits into its place.
  • an advantage is that the measuring is exact and that the measuring data may be transmitted forward easily, as the revolution counter includes a pulse sensor, an inductive pair of couplings, a tachometer, or a similar member.
  • An advantage in one embodiment is that the length measuring data about the transfer range of the timber to be handled may be handled in a versatile, fast and exact way, as the embodiment comprises data transmission members for transmitting the measuring data from the revolution counter, for example, to the measuring and control device in the harvester.
  • Fig. 1 shows a harvester head of the invention as a partly cut end view in direction of the transfer track of the timber to be handled.
  • Fig. 1 shows the advantageous harvester head 10 according to the invention in its operating position.
  • the harvester head 10 is presented as a partly cut end view in direction of the transfer track of the timber 12 to be handled, so that the cross section is seen of the timber 12.
  • the harvester head 10 has the body 14, the mechanically operated timber and feed roller 16, the freely rotating measuring wheel for the timber transfer range provided with the revolution counter 18, and the support point 22 stationary in the body 14.
  • the members 16 and 20 are arranged substantially to the same level transverse to the transfer track for the timber 12 to be handled on different sides of the timber to be handled, so that the timber to be handled would be supported from several directions.
  • the second mechanically operated support and feed roller 24 is arranged to the harvester head 10 which, provided with bark-removing members, also barks the timber 12, when necessary.
  • the members 16, 20, 22, and 24 There may be several similar members to the members 16, 20, 22, and 24, and they may be arranged to the same level or a different level as the members 16 and 20 in the figure.
  • the movement of the support and feed members 16 and 20 is shown in the figures, i.e. the members, a hydraulic member 26 and a stabiliser bar 28, guide the distance between the support and feed members, which are arranged to move the arms 30 and 32, when desired.
  • the arm 30 is moved. also the measuring wheel 20 in connection with it moves.
  • the arm 32 is moved, also the first mechanically operated timber support and feed roller 16 connected to it moves.
  • the rollers 16 and 20 always move simultaneously. This is not necerney m the harvester head 10 of the invention, but if desired, the measuring roller 20 may have its own. independently operating position adjustment members 26 and 28.
  • the second mechanically operated roller 24 is arranged to be moved respectively, but the hydraulic members, stabiliser bars, or other similar members are not shown in the figure.
  • the roller 24 in the example may be moved in relation to the timber 12 to be treated irrespective of the support and feed members 16 and 20.
  • the figure also shows the hydraulic motor 34 used for rotating the first mechanically operated roller 16, and the hydraulic motor 36 used for rotating the second mechanically operated roller 24.
  • the second mechanically operated roller 24 and its driving motor 36 are supported to the body 14 with a support assembly 38.
  • the harvester head 10 is generally provided with other members as well, which are not shown in this connection, such as different kinds of blades, saws, sensors, or timber marking devices, and equipment needed for felling timber.
  • the harvester head 10 is attached to a suitable frame machine, for example an excavator, with connectors and/or coupling members previously known. Further, the hydraulically driven members of the harvester head 10 are hydraulically connected to the hydraulic system in the frame machine in a way known in itself. The frame machine or the connectors, coupling members or hydraulic members connecting it and the harvester head are not shown in the figure. Nor does to figure show the data transmission members advantageously attached to the harvester head 10 of the invention, such as electric wires, through which the measuring signal from the pulse sensor or a similar member comprising the revolution counter 18 is transmitted to the measuring and control device in the frame machine.
  • the data transmission members advantageously attached to the harvester head 10 of the invention, such as electric wires, through which the measuring signal from the pulse sensor or a similar member comprising the revolution counter 18 is transmitted to the measuring and control device in the frame machine.
  • the advantageous harvester head 10 of the invention shown in Fig. 1 works in the following way.
  • the harvester head 10 is opened by controlling the members 26 and
  • the harvester head 10 is closed to the desired place, i.e. the members 16, 20 and 24 are pressed agamst the timber trunk 12.
  • the cutting saw is not shown in the figure.
  • the harvester head 10 and simultaneously timber 12 in its grip are turned into the working position, i.e. generally so that the trunk of the timber 12 to be handled is substantially parallel to the earth surface, in practice generally horizontal.
  • the hydraulic member 28 is used to adjust the force, with which the support and feed members 16 and 20 press the trunk, to a desired value.
  • the roller 24 is pressed against the timber trunk 12 in a respective way.
  • Timber 12 to be handled is moved m the longitudinal direction, i.e. along the transfer track by using hydraulic motors 34 and 36. arranged to rotate the timber support and feed rollers 16 and 24.
  • the surfaces 16 and 24 of the rollers are shaped so that they get a holding grip of timber 12, thus making timber 12 to move when the rollers 16 and 24 are rotating.
  • the measuring roller 20 arranged to rotate freely and the support point 22 stationary in the body 14 keep the trunk 12 straight as the feed rollers 16 and 24 affect timber 12 from different sides.
  • the revolution counter 18 arranged to the measuring roller 20 and its pulse sensor or a similar member give information about the rotating movement of the measuring roller 20, i.e.
  • the measuring results from the revolution counter 18 may, for example, be combined with information from other sensors, such as the timber thickness measuring sensor, so that, for example, the volume of the amount of handled timber may be calculated.
  • timber 12 to be handled is intended to be barked so that the feed rollers 16 and 24 release the bark as they feed timber through the harvester head.
  • the barking is not always successfully conducted with one handling, but timber 12 often has to be moved back and forth in the harvester head 10 even several times, so that the hydraulic motors 34 and 36 rotating the rollers 16 and 24 have to work in both directions.
  • the harvester head 10 is opened by controlling the members 26 and 28 so that the aims 30 and 32 turn, simultaneously turning the support and feed members 16 and 20 farther away from each other, i.e. away from the transfer track for timber 12.
  • the roller 24 is moved away from the transfer track for timber 12.
  • the part of timber 12 to be handled still remaining in the harvester head is dropped to the desired place, and the harvester head 10 is ready to receive a new trunk 12.
  • the rollers 16 and 24 may be turned loose from the trunk 12 merely by moving the members 26 and 28.
  • the roller 20 becomes cleaned by itself, or it may be cleaned without having to release the timber 12 at all from the grip of the harvester head, because the roller 24 is still keeping the timber 12 in its grip.
  • the device of the invention does not necessarily have to comprise a barking roller, or the harvester head may be provided with some other suitable equipment.
  • the members, motors and power transmission of the harvester head may also be of some other type than hydraulic, for example, electrically driven or driven by a combustion engine.
  • the control and measuring device may consist of several parts, of which one or some may be arranged to the harvester head.
  • the support and feed rollers may be manufactured of any suitable material, or a combination of these, such as metal, plastic, or rubber.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Harvester Elements (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)

Abstract

L'invention concerne une tête d'abatteuse-tronçonneuse (10) destinée à une machine de récolte du bois et un procédé correspondant. La tête d'abatteuse-tronçonneuse comprend un corps (14) comportant au moins deux éléments de support et d'alimentation (16, 20) pour le bois à manipuler (12), lesdits éléments soutenant et transférant le bois (12) dans la direction longitudinale. Ces éléments (16, 20) sont aménagés des côtés différents de la voie de transfert pour le bois (12). Parmi ces éléments de support et d'alimentation (16, 20), au moins un est mécanisé (16) et au moins un pivote librement (20). En outre, la tête d'abatteuse-tronçonneuse (10) comprend des éléments de réglage (26, 28) servant à éloigner les uns des autres les éléments de support et d'alimentation (16, 20) et des éléments de transmission d'énergie (34) servant à utiliser au moins un élément mécanisé (16). Le ou les élément(s) pivotant librement de support et de transfert de bois (20) est (sont) muni(s) d'un compte-tours (18) servant à mesurer le transfert du bois (12).
PCT/FI2000/000373 1999-04-29 2000-04-28 Tete d'abatteuse-tronçonneuse et procede correspondant WO2000065900A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU44068/00A AU4406800A (en) 1999-04-29 2000-04-28 Harvester head and a method therein

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990973A FI109265B (fi) 1999-04-29 1999-04-29 Harvesteripää ja menetelmä siinä
FI990973 1999-04-29

Publications (2)

Publication Number Publication Date
WO2000065900A1 true WO2000065900A1 (fr) 2000-11-09
WO2000065900B1 WO2000065900B1 (fr) 2001-01-04

Family

ID=8554552

Family Applications (1)

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PCT/FI2000/000373 WO2000065900A1 (fr) 1999-04-29 2000-04-28 Tete d'abatteuse-tronçonneuse et procede correspondant

Country Status (3)

Country Link
AU (1) AU4406800A (fr)
FI (1) FI109265B (fr)
WO (1) WO2000065900A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6629982B2 (en) * 2001-04-17 2003-10-07 Ohio Medical Instrument Company, Inc. Three-pin skull clamp with load distribution indicators on the rocker arm
WO2005043983A1 (fr) * 2003-11-06 2005-05-19 Fiberpac Kb Abatteuse pour une machine forestiere
WO2013004897A1 (fr) * 2011-07-01 2013-01-10 Lako Forest Oy Ltd Tête d'abattage-ébranchage et agencement de tête d'abattage-ébranchage
AT511730A3 (de) * 2011-07-29 2014-08-15 Zaglacher Andreas Vorschubeinheit für einen Harvester
WO2015084182A3 (fr) * 2013-12-02 2015-07-30 Waratah Nz Limited Dispositif de travail du bois d'œuvre et procédé de fonctionnement
WO2017198504A1 (fr) * 2016-05-17 2017-11-23 Log Max Ab Abatteuse-ébrancheuse, système de surveillance d'abattage-ébranchage, tête d'abattage-ébranchage, procédé de commande de fonctionnement d'une tête d'abattage-ébranchage, et procédé de surveillance de fonctionnement d'abatteuse-ébrancheuse
WO2018199833A1 (fr) * 2017-04-28 2018-11-01 Komatsu Forest Ab Tête d'abatteuse écorceuse de type à poignée unique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20125675L (fi) * 2012-06-18 2013-12-19 Technion Oy Yksioteharvesterin harvesteripään mittausmenetelmä ja yksioteharvesterin harvesteripää

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058638A (en) * 1990-08-10 1991-10-22 Steyr-Daimler-Puch Ag Apparatus for cross-cutting treetrunks, comprising a device for measuring lengths
WO1993003604A1 (fr) * 1991-08-27 1993-03-04 Juha Moisio Grappin d'abattage pour machine a arracher les arbres multi-fonction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058638A (en) * 1990-08-10 1991-10-22 Steyr-Daimler-Puch Ag Apparatus for cross-cutting treetrunks, comprising a device for measuring lengths
WO1993003604A1 (fr) * 1991-08-27 1993-03-04 Juha Moisio Grappin d'abattage pour machine a arracher les arbres multi-fonction

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6629982B2 (en) * 2001-04-17 2003-10-07 Ohio Medical Instrument Company, Inc. Three-pin skull clamp with load distribution indicators on the rocker arm
WO2005043983A1 (fr) * 2003-11-06 2005-05-19 Fiberpac Kb Abatteuse pour une machine forestiere
WO2013004897A1 (fr) * 2011-07-01 2013-01-10 Lako Forest Oy Ltd Tête d'abattage-ébranchage et agencement de tête d'abattage-ébranchage
AT511730A3 (de) * 2011-07-29 2014-08-15 Zaglacher Andreas Vorschubeinheit für einen Harvester
AT511730B1 (de) * 2011-07-29 2014-12-15 Zaglacher Andreas Vorschubeinheit für einen Harvester
WO2015084182A3 (fr) * 2013-12-02 2015-07-30 Waratah Nz Limited Dispositif de travail du bois d'œuvre et procédé de fonctionnement
WO2017198504A1 (fr) * 2016-05-17 2017-11-23 Log Max Ab Abatteuse-ébrancheuse, système de surveillance d'abattage-ébranchage, tête d'abattage-ébranchage, procédé de commande de fonctionnement d'une tête d'abattage-ébranchage, et procédé de surveillance de fonctionnement d'abatteuse-ébrancheuse
RU2741349C2 (ru) * 2016-05-17 2021-01-25 Лог Макс Аб Лесозаготовительная машина, система контроля лесозаготовки, харвестерная головка, способ управления работой харвестерной головки и способ контроля работы лесозаготовительной машины
AU2017267087B2 (en) * 2016-05-17 2022-07-14 Log Max Ab A tree harvesting machine, a tree harvesting monitoring system, a tree harvesting head, a method for controlling operation of a tree harvesting head and a method for monitoring operation of a tree harvesting machine
US11457573B2 (en) 2016-05-17 2022-10-04 Log Max Ab Tree harvesting machine, a tree harvesting monitoring system, a tree harvesting head, a method for controlling operation of a tree harvesting head and a method for monitoring operation of a tree harvesting machine
WO2018199833A1 (fr) * 2017-04-28 2018-11-01 Komatsu Forest Ab Tête d'abatteuse écorceuse de type à poignée unique
AU2018256769B2 (en) * 2017-04-28 2023-11-30 Komatsu Forest Ab Debarking harvester head of single-grip type

Also Published As

Publication number Publication date
AU4406800A (en) 2000-11-17
FI109265B (fi) 2002-06-28
FI990973A (fi) 2000-10-30
FI990973A0 (fi) 1999-04-29
WO2000065900B1 (fr) 2001-01-04

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