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WO1995027599A1 - Procede et dispositif de traitement de souches d'arbre - Google Patents

Procede et dispositif de traitement de souches d'arbre Download PDF

Info

Publication number
WO1995027599A1
WO1995027599A1 PCT/SE1995/000270 SE9500270W WO9527599A1 WO 1995027599 A1 WO1995027599 A1 WO 1995027599A1 SE 9500270 W SE9500270 W SE 9500270W WO 9527599 A1 WO9527599 A1 WO 9527599A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide bar
tree
nozzle
jet
decay
Prior art date
Application number
PCT/SE1995/000270
Other languages
English (en)
Inventor
Bo Axelsson
Original Assignee
Bohult Maskin Ab
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 Bohult Maskin Ab filed Critical Bohult Maskin Ab
Publication of WO1995027599A1 publication Critical patent/WO1995027599A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/12—Lubricating devices specially designed for chain saws
    • 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 method, in the felling of trees, of preventing or inhibiting decay in a remaining tree stump, the tree being sawn from the tree stump using a chain saw with a guide bar, and the remaining tree stump being sprayed with a decay-preventing or decay- inhibiting agent.
  • the present invention also relates to a device, in the felling of trees, for preventing or inhibiting decay in a remaining tree stump, and comprises a chain saw with a guide bar, and diffuser means for spraying the tree stump with a decay-preventing or decay-mhibiting agent.
  • Equipment for disseminating the above-mentioned liquid fungicides have previously comprised a specially manufactured guide bar for the chain saw which is employed in the clearance felling.
  • This guide bar features interior ducts with apertures via which the fungicide is sprayed out against the tree stump in connection with the felling of the tree.
  • the present invention has for its object to devise the method intimated by way of introduction such that the drawbacks inherent in prior art methods are obviated.
  • the present invention has for its object to realise a method in which combating decay and rot may be effected rapidly and conveniently, at the same time as forestry clearance takes place, and with extremely slight consumption of fungicides.
  • the present invention further has for its object to realise a method which does not complicate the replacement of guide bars, or make this an expensive operation.
  • the present invention yet further has for its object to design the device intimated by way of introduction such that it obviates the problems inherent in prior art technology.
  • the present invention has for its object to realise a device which is simple and economical in purchase and use, which does not prevent the replacement of guide bars and which eliminates the need for specially manufactured guide bars.
  • the present invention further has for its object to realise a device which reduces consumption of fungicides.
  • the diffuser means comprise at least one nozzle in the region of the anchorage of the guide bar, this nozzle being disposed for emitting at least one jet of the decay- preventing or inhibiting agent substantially in the longitudinal direction of the guide bar, towards its tip or head, and on the side of the guide bar facing towards the tree stump.
  • Fig. 1 is a schematic vertical side elevation of a part of a guide bar and its anchorage
  • Fig.2 shows the device of Fig. 1 seen from beneath.
  • reference numeral 1 relates to a lower anchorage and reference numeral 2 an upper anchorage for a guide bar 3.
  • reference numeral 4 relates to a drive motor which is preferably hydraulic and which, via a schematically illustrated sprocket 5, drives a saw chain (not shown in Fig. 1).
  • a saw chain 6 is intimated along opposing edges of the guide bar 3, the chain having a cutting part 7 and a return part 8.
  • the guide bar 3 and chain 6 may be of fully conventional type, for which reason no mechanical intervention or special adaptation need be made to these components.
  • At least one jet 9 is emitted substantially in the longitudinal direction of the guide bar out towards its tip or head.
  • the point of impingement 10 between the jet 9 and the guide bar 3 is located a slight distance from the anchorage 1 and 2 of the guide bar, in practice this distance possibly needing to be varied in dependence upon the thickness of the tree which is to be felled.
  • suitable distance from the anchorage 1 to the point of impingement 10 mention might be made of the order of magnitude of 8 to 10 cm, but both smaller and greater distances may be appropriate when thinner or thicker trees are to be felled.
  • the nozzle 11 which emits the jet of agent for inhibiting or preventing the spread of decay is suitably adjustable so that the distance between the nozzle 11 and the point of impingement 10 of the jet 9 on the guide bar 3 may be varied.
  • One method of reahsing this is to vary the angle between the jet 9 and the longitudinal direction of the guide bar 3. Those angles which may come into consideration lie in the range of between 2 and 8°, but may suitably amount to approx. 5°.
  • Another method of varying the above distance may reside in moving the discharge aperture of the nozzle 11 for the jet 9 closer to or further away from the guide bar 3.
  • the nozzle 11 may either be replaceable or adjustable so that the through-flow aperture lies in the size range of between 1.0 and 2.5 mm.
  • a duct 12 is provided in the lower anchorage 1 of the guide bar 3, this duct optionally being provided with a connection 13 on the underside of the anchorage, but also optionally being provided with a connection 14 on the upper anchorage 2.
  • the device further includes a storage container or reservoir for the decay- inhibiting or decay-preventing agent, this reservoir being connected via a line to a pump arrangement which, via a discharge conduit, is in communication with one of the connections 13 and 14 on the anchorage of the guide bar 3.
  • the pump arrangement is further in communication with a control unit which controls operation of the pump.
  • the control unit is designed in such a manner that a ready signal is emitted for initiating a work cycle in the pump arrangement as soon as the cutting unit with the chain 6 is started.
  • the control unit includes a delay circuit which, with optional delay after start of the cutting unit, starts the pump so that the jet is established along the lower planar side of the guide bar.
  • the control unit further includes an adjustable time regulator for the time during which the pump is activated so that the jet is thereby emitted during a corresponding time interval.
  • the control unit also suitably includes the possibility of regulating the discharge pressure from the pump arrangement so that this pressure may be set in the range of between 10 and 25 bar.
  • a typical work cycle for the above described device may have the following appearance.
  • the cutting unit is brought into the proximity of the tree which is to be felled, whereafter the cutting function of the device is started.
  • the control unit receives a signal that cutting has been commenced and that the tilt function for felling the tree is activated.
  • the above-mentioned delay time is activated, this suitably lying in the range of between 0.1 and 1.0 sec.
  • the pump arrangement is activated so that the jet 9 of agent is emitted.
  • the emission continues first as long as the cutting operation is activated and then, when this has been completed (and the saw chain 6 has thus stopped), diffusion of agent is continued for a certain time, suitably within the range of between 1 and 3 sec, at the same time as felling of the tree is completed.
  • the nozzle 11 is placed a shorter distance to the cutting part 7 of the chain 6 than to the return part 8.
  • the ratio between that section of the guide bar 3 which, in the cutting direction, is located ahead of the jet 9 and that section of the guide bar which is located behind the jet amounts to 1:2 or 1:5.
  • the jet will therefore be emitted approximately parallel with the cutting part 7 of the chain 6 and at a relatively short distance (in practice often between 15 and 35 mm) therefrom.
  • the nozzle 11 emits a single jet 9.
  • an improvement of this function may be achieved if the nozzle is designed for emitting two or more jets so that these may thereby impinge on the planar side of the guide bar at different distances from the nozzle. It is also possible to cause such jets to run parallel with one another so that they impinge on the guide bar at approximately the same distance from the nozzle.
  • several separate nozzles may be employed instead of a twin or multiple nozzle, these nozzles being of different diameters and through-flow areas and being individually adjustable or replaceable.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Catching Or Destruction (AREA)
  • Emergency Lowering Means (AREA)

Abstract

La présente invention concerne un procédé d'abattage des arbres destiné à empêcher la putréfaction de la souche. Le procédé consiste à scier le tronc de sa souche au moyen d'une tronçonneuse à chaîne équipée d'une barre de guidage, tout en pulvérisant sur la souche une substance inhibant ou prévenant la putréfaction. Le dispositif à utiliser pour ce procédé se compose d'une tronçonneuse à chaîne (1 - 6) équipée d'une barre de guidage (3) et d'un dispositif de diffusion de ladite substance. Selon la présente invention, le dispositif de diffusion de comporte au moins un diffuseur (11) dans la zone située en dessous du point de fixation de la barre de guidage (3). L'orientation du diffuseur (11) dirige le jet le long de la barre de guidage, vers son extrémité ou sa tête, selon un angle aigu par rapport à la barre de guidage.
PCT/SE1995/000270 1994-04-08 1995-03-17 Procede et dispositif de traitement de souches d'arbre WO1995027599A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9401180A SE9401180L (sv) 1994-04-08 1994-04-08 Sätt och anordning för att vid fällning av ett träd hindra eller hämma röta i en kvarvarande stubbe
SE9401180-6 1994-04-08

Publications (1)

Publication Number Publication Date
WO1995027599A1 true WO1995027599A1 (fr) 1995-10-19

Family

ID=20393575

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000270 WO1995027599A1 (fr) 1994-04-08 1995-03-17 Procede et dispositif de traitement de souches d'arbre

Country Status (2)

Country Link
SE (1) SE9401180L (fr)
WO (1) WO1995027599A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998053667A1 (fr) * 1997-05-29 1998-12-03 Hultdin System Ab Ensemble scie
EP1050208A1 (fr) * 1999-05-03 2000-11-08 Ponsse Oyj Dispositif pour traiter des souches d'arbres

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE398450B (sv) * 1975-10-15 1977-12-27 Umea Mekaniska Ab Forfarande och anordning for fergmerkning av stockar
SE410717B (sv) * 1978-12-01 1979-10-29 Ostbergs Fabriks Ab Forfarande och anordning for morkning av virke
FI91208B (fi) * 1992-08-31 1994-02-28 Lauri Kalervo Ketonen Monitoimikoneen katkaisulaippaan sovitettu värimerkkausputkisto

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE398450B (sv) * 1975-10-15 1977-12-27 Umea Mekaniska Ab Forfarande och anordning for fergmerkning av stockar
SE410717B (sv) * 1978-12-01 1979-10-29 Ostbergs Fabriks Ab Forfarande och anordning for morkning av virke
FI91208B (fi) * 1992-08-31 1994-02-28 Lauri Kalervo Ketonen Monitoimikoneen katkaisulaippaan sovitettu värimerkkausputkisto

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998053667A1 (fr) * 1997-05-29 1998-12-03 Hultdin System Ab Ensemble scie
US6182722B1 (en) 1997-05-29 2001-02-06 Hultdin System Ab Saw assembly
EP1050208A1 (fr) * 1999-05-03 2000-11-08 Ponsse Oyj Dispositif pour traiter des souches d'arbres

Also Published As

Publication number Publication date
SE9401180L (sv) 1995-10-09
SE9401180D0 (sv) 1994-04-08

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