WO2008058348A1 - Appareil et procédé permettant d'exécuter une opération d'usinage - Google Patents

Appareil et procédé permettant d'exécuter une opération d'usinage Download PDF

Info

Publication number
WO2008058348A1
WO2008058348A1 PCT/AU2007/001777 AU2007001777W WO2008058348A1 WO 2008058348 A1 WO2008058348 A1 WO 2008058348A1 AU 2007001777 W AU2007001777 W AU 2007001777W WO 2008058348 A1 WO2008058348 A1 WO 2008058348A1
Authority
WO
WIPO (PCT)
Prior art keywords
working
beam structure
cam
movement
target zone
Prior art date
Application number
PCT/AU2007/001777
Other languages
English (en)
Inventor
Jonathan Oldfield
Peter English
Daniel Tangney
Original Assignee
Rural Project Services Pty Ltd
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
Priority claimed from AU2006906460A external-priority patent/AU2006906460A0/en
Application filed by Rural Project Services Pty Ltd filed Critical Rural Project Services Pty Ltd
Priority to AU2007321726A priority Critical patent/AU2007321726A1/en
Publication of WO2008058348A1 publication Critical patent/WO2008058348A1/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
    • A01G23/091—Sawing apparatus specially adapted for felling trees
    • 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
    • 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
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/08—Other tools for pruning, branching or delimbing standing trees

Definitions

  • This invention relates to an apparatus for, and a method of, performing a working operation within a target zone adjacent an object.
  • the working operation may take any appropriate form, such as a cutting, grinding or application of a substance to a surface (for example, spraying a liquid onto a target area around an object).
  • the invention has been devised particularly, although not solely, for removal of plant material around an object, such as for example in a cutting operation where unwanted stems from the stump of a tree which has been coppiced.
  • the invention may, however, have various other applications, including cutting or pruning plant material such as weeds around poles (for example, power poles and telephone poles) and cutting or pruning of weeds around vine stems.
  • the apparatus may have application in industrial and engineering environments where a working operation (such as cutting or grinding) is performed around a selected object, or where a working operation is performed on the periphery of the selected object (such as, for example, chasing a channel into the periphery of an upstanding element).
  • apparatus for performing a working operation within a target zone associated with an object comprising a working means for performing a working operation, means for moving the working means through the target zone, said means being adapted to move the working means with reference to the location of the object, and an abutment portion adapted to abut the object to provide said reference to the location of the object.
  • the target zone surrounds an excluded zone within which the object or at least a portion thereof is located,
  • the Working means may comprise a single working element or a plurality of working elements. Where the working means comprises a plurality of working efements, each working element is preferably adapted to move through a portion of the target zone.
  • At least two working elements adapted for movement with respect to the object to pass on opposed sides thereof, whereby the at least two working element cooperate to perform a working operation at the target zone.
  • the working operation may take any appropriate form including a cutting operation.
  • the or each working element may comprise a cutter such as a rotatable cutting blade.
  • the, or each, working element is mounted on a swing arm adapted for movement with reference to the object to move the or each working element through at least a portion of the target zone.
  • the, or each, swing arm is pivotaliy mounted on a base, and the apparatus further comprises means for causing the or each swing arm to swing between inner and outer conditions upon movement of the base towards or away from the object.
  • the base supported on a beam structure for movement therealong, one end of the beam structure being provided with said abutment portion.
  • the base may be defined by a carriage movable along a track defined by the beam structure.
  • the means for causing swinging movement of the or each swing arm may comprise a cam mechanism operable between the beam structure and the respective swing arm.
  • the apparatus comprises two swing arms each supporting a respective working element and each connected to the base.
  • a method of performing a working operation within a target zone adjacent an object comprising establishing a reference corresponding to the location of the object, and moving a working means for performing the working operation through the target zone, the working means being moveable with respect to the reference.
  • Figure 1 is a schematic .view of a vehicle fitted with apparatus according to the embodiment for performing a forestry operation
  • Figure 2 is a perspective view of the apparatus according to the embodiment
  • Figure 3 is a front perspective view of the apparatus
  • Figure 4 is a side elevational view of the apparatus
  • Figure 5 is a plan view of the apparatus
  • Figure 6 is a fragmentary view of a cam mechanism forming apart of the apparatus, with the cam mechanism being shown in one condition;
  • Figure 7 is a view similar to Figure 6 with the exception that the cam mechanism is shown in another condition;
  • Figure 8 is a fragmentary sectional view of the cam mechanism
  • Figure 9 is a plan view of the apparatus performing a cutting operation, with the apparatus being shown in an initial cutting position;
  • Figure 10 is a view similar to Figure 9 with the exception that the apparatus is shown in an intermediate cutting position;
  • Figure 11 is also a view similar to Figure 9 with the exception that the apparatus is shown in a final cutting position. Best Mode ⁇ s) for Carrying Out the Invention
  • a cutting apparatus 10 for performing a forestry operation specifically, an operation involving cutting unwanted stems growing from stumps of trees that have been coppiced.
  • the cutting operation involves selecting a stem on a tree stump for retention and cutting the other stems from the tree stump, in the drawings, the stem selected for retention is identified fay reference 11.
  • the apparatus 10 is adapted to be mounted onto an operating vehicle 12 of any appropriate type.
  • the operating vehicle 12 may be a vehicle specifically constructed to carry the apparatus 10 or alternatively an existing vehicle modified to receive the apparatus 10.
  • the operating vehicle 12 comprises an excavator 13 having an articulated arm 14 on to which the apparatus 10 is fitted.
  • the operating vehicle 12 has a hydraulic power system which is utilised to operate a hydraulic circuit incorporated in the apparatus 10.
  • the apparatus 10 comprises a beam structure 15 having an inner end 17 mounted on the operating vehicle 12 such that the beam structure extends generally horizontally therefrom.
  • the beam structure 15 is mounted at an inner end 16 thereof on the excavator arm 14.
  • the beam structure 15 has an outer end 19 configured as an abutment 21 adapted to locate against the selected stem 11 to provide a reference, as shown in Figures 9, 10 and 11.
  • the beam structure 15 defines a track 23 on which a carriage 25 is slidoably mounted for limited axial movement with respect to the beam structure.
  • the carriage 25 provides a base 26 having two lateral sections 27 disposed one to each longitudinal side of the beam structure 15.
  • a power mechanism 31 is provided for selectively moving the carriage 25 along the track 23.
  • the power mechanism 31 is hydraulically powered and comprises two hydraulic rams 33.operatively connected between the beam structure 15 and the carriage 25.
  • the two hydraulic rams 33 are disposed on ⁇ to each side of the beam structure 15, as shown in the drawings.
  • the hydraulic rams 33 may be incorporated in a hydraulic circuit powered by the hydraulic system of the operating vehicle 12.
  • the apparatus 10 further comprises two swing arms 35 disposed one to each side of the beam structure 15.
  • Each swing arm 35 is pivotally connected at one end through pivot 37 to a respective one of the lateral sections 27 of the base 26 for pivotal movement about a substantially vertical pivot axis.
  • Each swing arm 35 is pivotally moveable between an inner retracted condition in which it lies substantially parallel to the beam structure (as best seen in Figures 9 and 11) and an outer extended condition (as best seen in Figure 10).
  • Stops 36 are provided on the lateral sections 27 for limiting the extent of outward movement of the swing arms 35.
  • the swing arms 35 and the pivots 37 are of robust construction such that there no deflection of any consequence in the swing arms 35 from their intended path in moving between their inner and outer conditions.
  • each swing arm 35 carries a hydraulic motor 41 having an output shaft 43 which is disposed substantially vertically and to which a working element in the form of a cutter blade 45 is supported.
  • the hydraulic motor 41 can rotate the cutter blade 45 to perform a cutting operation.
  • the arrangement is such that the cutter blades 45 are in close proximity to each other, but not in contact with each other, when the swing arms 35 are in the inner condition as shown in Figures 6, 9 and 11. Accordingly, there is by necessity a small gap 46 between the two cutter blades 45 when the swing arms 35 are in the inner condition.
  • a control means 51 is provided for moving the swing arms 35 to follow a path cutting a swath about the selected stem 11 , as will be explained in more detail later.
  • the movement of the swing arms 35 involves swinging movement about the pivots 37 and also displacement along the beam structure 15.
  • the control mechanism 51 comprises a cam mechanism 53 operable to cause movement of the swing arms 35 upon movement of the carriage 25 with respect to the beam structure 15.
  • the cam mechanism 53 comprises two cams 55 on the inner longitudinal sides of the swing arms 35. Each cam 55 defines a cam track 56.
  • the cam mechanism 53 further comprises two cam followers 57 for engagement with the cams 55.
  • the two cam followers 57 are mounted on the beam structure 15, one on each side thereof.
  • each cam follower 57 comprises a roller 59 having a periphery 61 configured to laterally embrace the cam track 56, as shown in Figure 8.
  • the roller 59 has a peripheral recess 62 of concave configuration and the cam track 56 has a complementary cross-sectional profile which is convex for mating engagement with the roller.
  • engagement of each cam roller 59 on its cam track 56 assists in stabilising the swing arms 35 vertically with respect to the beam structure 15. This stability assists in ensuring that the cutter blades 45 operate in a common horizontal plane.
  • rollers 59 are rotatably supported on brackets 61 mounted on the beam structure 15.
  • the control means 51 further comprises a biasing means 65 for biasing the two swing arms 35 towards their inner conditions.
  • the biasing mean 65 comprises tension springs 67 connected between the two swing arms 35 and the beam structure 15 such that the springs 67 are tensioned when the swing arms 35 move form their inner conditions towards the outer conditions, the spring force acting to urge the cam tracks 56 into mating engagement with the cam rollers 59 and to also the bias the swing arm 35 towards their inner conditions.
  • Movement of the carriage 25 along the beam structure 15 under the influence of the hydraulic rams 33 causes the swing arms 35 (which are mounted on the carriage 25) to also move along the beam structure 15 and thereby cause the cam tracks 56 on the swing arm 35 to move With respect to the cam rollers 59.
  • Each cam track 63 is configured to have first and second end sections 7T 1 72 and an intermediate section 73 between the two end sections.
  • the intermediate section 73 is laterally outermost with respect to the respective swing arm 35, and the two end sections 71, 72 are disposed laterally inwardly thereof, as best seen in Figure 6.
  • the first end section 71 is disposed further inwardly than the second track section 72, again as best seen in Figure 6,
  • the cam track 63 extends continuously between the two end sections 71 , 72, firstly moving laterally outwardly from the first end section 71 towards the intermediate section 73 at which there is a peak 74 and thereafter moving laterally inwardly towards the second end section 72.
  • the supports arm 35 are caused to swing outwardly and then inwardly, so allowing the cutter blades 45 to pass around the periphery of the selected stem 11 without making contact with that stem.
  • Movement of the cutter blades 45 is with reference to the location of the selected stem 11 as determined by positioning of the abutment 21 at the outer end of the beam structure 15 in contact with the selected stem.
  • the apparatus 10 has a barrier structure 80 to impede any cut stems which might fall towards the apparatus 10 and deflect them sideward.
  • the barrier structure 80 comprises an angled support member 81 extending upwardly and outwardly from the carriage 25 and a deflector 83 at the upper end of the support member 81.
  • the deflector 83 comprises a laterally extending rigid beam structure 85 configured to present a curved profile for deflecting any sterns falling onto rt sidewardly.
  • the apparatus 10 is manoeuvred to a tree stump on which a cutting operation is to be performed,
  • the particular stem 11 which is to be retained is selected and the beam structure 15 fs advanced to bring the abutment 21 into contact with the selected stem.
  • This provides a reference point for the subsequent movement of the cutter blades 45.
  • the two cutter blades 45 are disposed adjacent each other and in close proximity to, but not in contact with, the selected stem 11 , as shown in Figure 9.
  • the hydraulic rams 33 are then actuated to move , the carriage 25 along the track 23.
  • the carriage 25 carries the swing arms 35 along the beam structure 15, thereby moving the cam tracks 56 on the swing arms 35 along their respective cam rollers 59.
  • the cutting apparatus 10 can perform a cutting operation in a target zone about the selected stem 11 in order to cut any unwanted stems that might be present in that target zone while not cutting anything in an excluded zone which is surrounded by the target zone and in which the selected stem 11 is located.
  • the cam mechanism comprises cams on the swing arms and cam followers on the beam.
  • Other arrangements are, of course, possible including an arrangement where the cams are provided on the beam and the cam followers are on the swing arms.
  • the invention may have various applications other than a cutting operation for removal of unwanted stems, from the stump of a tree which has been coppiced.
  • the invention may, for example, be used for cutting or pruning plant material such as weeds around objects such as poles (for example, power poles and telephone poles) and for cutting or pruning of weeds around vine stems.
  • the apparatus may have application in industrial and engineering environments Where a working operation (such as cutting or grinding) is performed around a selected object, or where a working operation is performed on the periphery of the selected object (such as, for example, chasing a channel into the periphery of an upstanding element). In the latter case, the location of the selected object would incorporate the . excluded zone and would also overlap into the target zone. Typically, the object would be located centrally within the excluded zone and overlap into the target zone such that the working operation would be performed on that part of the object in the target zone and not on that part of the object in the excluded zone.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

L'appareil selon l'invention est un appareil de coupe (10) monté sur un véhicule (12) et utilisé dans les opérations forestières pour couper des troncs d'arbres indésirables choisis provenant de souches qui ont été élaguées. L'appareil comprend une structure de montant (15) comportant une extrémité interne (17) et une extrémité externe (19) à amener contre un article sélectionné pour fournir un repère. La structure de montant comporte un rail (23) sur lequel un chariot est monté de façon coulissante et est déplacé par un mécanisme d'entraînement (31, 33) ; et comporte deux bras oscillants (34) reliés pivotants à une extrémité au chariot en vue du mouvement d'oscillation entre un état rétracté interne et un état d'extension externe. L'extrémité libre de chaque bras supporte une lame de coupe motorisée (45). Un moyen de commande (51) comprenant une structure à cames (53) est fourni afin de déplacer les bras oscillants (35) pour suivre une trajectoire courbe en coupant une bande autour de la périphérie d'une souche d'arbre ou d'un tronc (11) choisi.
PCT/AU2007/001777 2006-11-17 2007-11-19 Appareil et procédé permettant d'exécuter une opération d'usinage WO2008058348A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2007321726A AU2007321726A1 (en) 2006-11-17 2007-11-19 Apparatus and method for performing a working operation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2006906460A AU2006906460A0 (en) 2006-11-17 Mechanical Pruning Apparatus
AU2006906460 2006-11-17

Publications (1)

Publication Number Publication Date
WO2008058348A1 true WO2008058348A1 (fr) 2008-05-22

Family

ID=39401262

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2007/001777 WO2008058348A1 (fr) 2006-11-17 2007-11-19 Appareil et procédé permettant d'exécuter une opération d'usinage

Country Status (2)

Country Link
AU (1) AU2007321726A1 (fr)
WO (1) WO2008058348A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103688616A (zh) * 2013-11-08 2014-04-02 南京林业大学 平茬机动力传动装置
WO2016001864A1 (fr) * 2014-07-03 2016-01-07 B.M.V. Di Borio Valerio & C. S.N.C. Dispositif de sélection pour élagage sélectif applicable sur des machines d'élagage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412569A (en) * 1979-08-31 1983-11-01 Waratah General Engineering Ltd. Tree harvesting methods and machines
SU1101203A1 (ru) * 1983-03-21 1984-07-07 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Сельскохозяйственного Машиностроения Им.В.П.Горячкина Аппарат дл сплошной подрезки шпалерных культур
US4543775A (en) * 1979-04-23 1985-10-01 Up-Right, Inc. Method and apparatus for pruning cordon-trained grape vines
DE3739787A1 (de) * 1987-11-24 1989-06-08 Artur Pieroth Vorrichtung zum vorschnitt von rebholz an weinstoecken
WO1996019101A1 (fr) * 1994-12-22 1996-06-27 Sisu Cranab Ab Procede et appareil d'ebranchage d'arbres sur pied

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4543775A (en) * 1979-04-23 1985-10-01 Up-Right, Inc. Method and apparatus for pruning cordon-trained grape vines
US4412569A (en) * 1979-08-31 1983-11-01 Waratah General Engineering Ltd. Tree harvesting methods and machines
SU1101203A1 (ru) * 1983-03-21 1984-07-07 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Сельскохозяйственного Машиностроения Им.В.П.Горячкина Аппарат дл сплошной подрезки шпалерных культур
DE3739787A1 (de) * 1987-11-24 1989-06-08 Artur Pieroth Vorrichtung zum vorschnitt von rebholz an weinstoecken
WO1996019101A1 (fr) * 1994-12-22 1996-06-27 Sisu Cranab Ab Procede et appareil d'ebranchage d'arbres sur pied

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103688616A (zh) * 2013-11-08 2014-04-02 南京林业大学 平茬机动力传动装置
WO2016001864A1 (fr) * 2014-07-03 2016-01-07 B.M.V. Di Borio Valerio & C. S.N.C. Dispositif de sélection pour élagage sélectif applicable sur des machines d'élagage
AU2015283680B2 (en) * 2014-07-03 2018-11-15 B.M.V. Di Borio Valerio & C. S.N.C. Selection device for selective pruning applicable on pruning machines
US10813294B2 (en) 2014-07-03 2020-10-27 B.M.V. Di Borio Valerio & C.S.N.C. Selection device for selective pruning applicable on pruning machines

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