WO1993022900A1 - Dispositif d'abattage/ebranchage - Google Patents

Dispositif d'abattage/ebranchage Download PDF

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Publication number
WO1993022900A1
WO1993022900A1 PCT/FI1993/000198 FI9300198W WO9322900A1 WO 1993022900 A1 WO1993022900 A1 WO 1993022900A1 FI 9300198 W FI9300198 W FI 9300198W WO 9322900 A1 WO9322900 A1 WO 9322900A1
Authority
WO
WIPO (PCT)
Prior art keywords
tree
delimbing
aggregate
crosscutting
boom
Prior art date
Application number
PCT/FI1993/000198
Other languages
English (en)
Inventor
Pekka Topias SYRJÄ
Original Assignee
Syrjae Pekka Topias
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 Syrjae Pekka Topias filed Critical Syrjae Pekka Topias
Publication of WO1993022900A1 publication Critical patent/WO1993022900A1/fr

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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
    • A01G23/095—Delimbers

Definitions

  • the invention relates to an aggregate at the end of a boom in a vehicle-mounted crane and to a method by means of which a tree is felled, delimbed and crosscut.
  • the disadvantage of the design according to said publication is the long construction of the aggregate, which is due to the scirrors-shape of the arms. So the crosscutting knives must be arranged on the other side of the scirrors joint with respect to the delimbing knives. The weigth of device becomes great, because the arms must be of heavy-duty type due to their length and great torsional forces. The limited out ⁇ reach at delimbing and great inaccuracy of crosscuttings is an additioal disadvantage of the method.
  • Fig. 1 is an aggregate mounted on a timber crane.
  • Fig. 2 is delimbing with the aggregate.
  • Figure 1 shows a tractor-mounted timber crane 1 with a mobile boom.
  • An the end of the crane a crosscutting and delimbing aggregate with its frame is fastend.
  • Lowest in the aggregate is a chain saw 9 in a solid housing 8 for cutting the tre into lengthes.
  • a hydraulic motor to operate the saw and a blade 9 turning mechanism for the saw blade cutting motion.
  • curved delimbing knives 6 and 7. The delimb ⁇ ing knives are opened and closed according to the tree dia ⁇ meter, for instance by means of a hydraulic cylinder, which is not shown in the figure.
  • the delimbing knives are of solid construction and used also to take a good hold around the tree at felling while cutting it off from the butt.
  • the chain saw 9 sturdy housing the tree is also suspended at felling.
  • the aggregate is fastened to the boom end by an articulated mechanism, where the aggregate has no free stage to move in any direction with respect to the boom but only positively driven by the hydraulic cylinder. This means that controlled tree felling is possible with the aggregate. Any ⁇ how, the aggregate is usable for controlled felling of small sized trees only.
  • figure 1 shows gripping jaws 2 and 3 on the crane side of the vehicle.
  • the distance of jaws 2 and 3 and their mutual compression is adjusted by a hydraulic cylinder 4.
  • the butt of felled tree 10 is lifted with the aggregate 10 up between jaws 2 and 3 and locked immobile.
  • Jaws 2 and 3 have small angular points.
  • the jaws can be placed also elsewhere as for instance in the turning upper frame of the crane or even in the lower end of the first crane boom arm. it may be advantgeous for delimbing that the tree butt is locked high ⁇ er up.
  • Figure 2 is a felled tree 11 placed, using aggregate 10 as a lift, between jaws 2 nd 3 and locked by cylinder 4, whereby the tree butt is immobile. Delimbing of tree is carried out in this position in moving the aggregate 10 along the trunk so that delimbing knives 5,6 and 7 cutt off the limbs. With this aggregate it is possible to delimb ab. 7 metres from the butt. With longer trees, a wanted lenght of the tree is cut and the butt log taken off from between the jaws. Then the top end log or logs are lifted up bewteen the jaws and delimbed. The delimbing forces are strong and, accordingly, the compression of jaws must be sufficient.
  • the delimbing aggregate must be in right angle with respect to the trunk and it is necessary to adjust its position during delimbing by means of the boom cylinders.
  • aggregate 10 there can be rollers, leaning against the trunk, to facilitate the delimb ⁇ ing motion.
  • aggregate 10 can be furnished with a device to measure the cutting lengthes of tree, which can be a roller moving along the trunk or a device measuring the mutual distance of cutting blade 9 and jaws 2,3.
  • this device can be a known range finder based, for in ⁇ stance, on radar reflections, acoustic or electromagnetic wave motions, triangulation etc.
  • the known teles ⁇ copic boom construction is also very well adaptable to de ⁇ limbing, because it allows straight lined motion of the de ⁇ limbing aggregate.
  • FIGS. 1 and 2 show the fastening method of positive driven aggregate 10 to the boom
  • known fastening means of a timber crane or harvester can be used with the aggregate.
  • the aggregate is suspended from the end of the outmost boom arm, where it can be tilted in all direct ⁇ ions.
  • the suspended design includes rotation of aggregate in the vertical suspension axle.
  • the tree clamp 2,3 in a working machine is furnished with a rotting device, by means of which the tree can be rotated upon delimbing. Less than 180° is a quite sufficient tree rotation, whereby the ex ⁇ ternal surface of the tree can certainly be thoroughly de ⁇ limbed. In this case, delimbing knives are not needed all around the external surface of the tree.
  • the de ⁇ limbing direction can be from tree top to the butt, whereby the butt must not be locked to the crane or the vehicle frame but a support plate in the vehicle or crane frame is suffic ⁇ ient, against which the butt or the other end of a cut trunk is supported during delimbing.

Abstract

L'invention concerne un procédé d'abattage, d'ébranchage et de débitage d'arbres en grumes pour lequel un ensemble (10) de tronçonnage et d'ébranchage est monté à l'extrémité de la flèche d'une grue montée sur un véhicule (1). Dans une première étape, on sectionne et on abat l'arbre (11), puis on déplace le pied de l'arbre vers un dispositif de serrage (2, 3) situé sur le châsis du véhicule ou de la grue. Dans une seconde étape, on ébranche l'arbre en déplaçant l'ensemble (10) d'ébranchage et de tronçonnage le long du tronc, l'arbre étant maintenu dans ledit dispositif de serrage.
PCT/FI1993/000198 1992-05-08 1993-05-07 Dispositif d'abattage/ebranchage WO1993022900A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI922100A FI89664C (fi) 1992-05-08 1992-05-08 Traedkvistare-kapare
FI922100 1992-05-08

Publications (1)

Publication Number Publication Date
WO1993022900A1 true WO1993022900A1 (fr) 1993-11-25

Family

ID=8535257

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1993/000198 WO1993022900A1 (fr) 1992-05-08 1993-05-07 Dispositif d'abattage/ebranchage

Country Status (2)

Country Link
FI (1) FI89664C (fr)
WO (1) WO1993022900A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107651568A (zh) * 2017-10-09 2018-02-02 柳州市菱丰科技有限公司 采伐起重机液压系统
WO2021096415A1 (fr) * 2019-11-15 2021-05-20 Log Max Ab Tête d'abattage-ébranchage permettant de déterminer la longueur d'un tronc d'arbre et procédé associé

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1055366A (fr) * 1978-06-22 1979-05-29 Roger Sigouin Dispositif d'elagage
SE454040B (sv) * 1983-12-02 1988-03-28 Hemek Verkstads Ab Skogsskordare
SE456212B (sv) * 1987-09-21 1988-09-19 Ulf Eriksson Tredprocessoraggregat
US4773455A (en) * 1987-10-20 1988-09-27 Less-Micanik Inc. Tree delimber equipped with an articulated boom
SE459222B (sv) * 1986-01-10 1989-06-19 Oesa Ab Skoerdare

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1055366A (fr) * 1978-06-22 1979-05-29 Roger Sigouin Dispositif d'elagage
SE454040B (sv) * 1983-12-02 1988-03-28 Hemek Verkstads Ab Skogsskordare
SE459222B (sv) * 1986-01-10 1989-06-19 Oesa Ab Skoerdare
SE456212B (sv) * 1987-09-21 1988-09-19 Ulf Eriksson Tredprocessoraggregat
US4773455A (en) * 1987-10-20 1988-09-27 Less-Micanik Inc. Tree delimber equipped with an articulated boom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107651568A (zh) * 2017-10-09 2018-02-02 柳州市菱丰科技有限公司 采伐起重机液压系统
WO2021096415A1 (fr) * 2019-11-15 2021-05-20 Log Max Ab Tête d'abattage-ébranchage permettant de déterminer la longueur d'un tronc d'arbre et procédé associé

Also Published As

Publication number Publication date
FI89664C (fi) 1993-11-10
FI89664B (fi) 1993-07-30
FI922100A0 (fi) 1992-05-08

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