EP0057654B1 - Equipement pour le tronçonnage de billes de bois, ou analogues - Google Patents

Equipement pour le tronçonnage de billes de bois, ou analogues Download PDF

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Publication number
EP0057654B1
EP0057654B1 EP82440001A EP82440001A EP0057654B1 EP 0057654 B1 EP0057654 B1 EP 0057654B1 EP 82440001 A EP82440001 A EP 82440001A EP 82440001 A EP82440001 A EP 82440001A EP 0057654 B1 EP0057654 B1 EP 0057654B1
Authority
EP
European Patent Office
Prior art keywords
log
cutting
guide pillar
traveller
housing
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.)
Expired
Application number
EP82440001A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0057654A2 (fr
EP0057654A3 (en
Inventor
Emile Bach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT82440001T priority Critical patent/ATE21059T1/de
Publication of EP0057654A2 publication Critical patent/EP0057654A2/fr
Publication of EP0057654A3 publication Critical patent/EP0057654A3/fr
Application granted granted Critical
Publication of EP0057654B1 publication Critical patent/EP0057654B1/fr
Expired 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
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B29/00—Gripping, clamping or holding devices for the trunk or log in saw mills or sawing machines; Travelling trunk or log carriages
    • 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
    • B27B17/0041—Saw benches or saw bucks
    • B27B17/005—Saw benches or saw bucks with the saw mounted on a carriage

Definitions

  • the present invention relates to the cutting of logs, or the like and more specifically relates to equipment making it possible to carry out such an operation.
  • the equipment of the type under consideration intended mainly for the general public, essentially consists of an easel for supporting the log in the desired position and provided with means for fixing the chainsaw ensuring its mobility in the cutting plane chosen at the end of the easel in order to be able to cut the log into logs of the desired length.
  • chainsaws usually used for this purpose are portable autonomous devices with a motorized cutting member, generally a chain saw mounted in a closed loop on a blade guide, one end of which is free and the other end is engaged in the housing containing engine.
  • the housing is also provided with two handles for operating the assembly.
  • the object of the present invention is to conserve the advantages of ease and security proper to cutting on an easel, while allowing the cutting of balls having a very wide range of formats which can go up to diameters of value equal to the length of the cutting member.
  • the subject of the invention is equipment for cutting wooden logs, or the like, intended to receive a chainsaw with a cutting member motorized by an incorporated motor placed in a casing and constituted by a log holder easel comprising a cradle for receiving the cutting-off ball and provided, at one of its ends, with a structure for fixing the chainsaw while ensuring its mobility in the cutting plane, equipment characterized in that the structure for fixing of the chainsaw is constituted by a vertical guide column and by a carriage mounted movable in vertical translation on the guide column and comprising assembly means for securing said carriage with the casing of the chainsaw while keeping the cutting member oriented horizontally, or substantially horizontally, and in that the cradle for receiving the cutting-off ball consists of an inclined frame provided with stops for retaining the bil the and arranged so that their bearing surface for the ball is, relative to a plane containing the front face of the housing, slightly offset towards the front of this plane in the direction of the cutting member.
  • the mobile carriage is mounted on casters moving along the guide column.
  • this guide column is an “H” profile, the faces of the core of which serve as a rolling surface.
  • the guide column consists of a tubular upright provided at its upper open end with a pulley for supporting a sliding counterweight inside the upright and connected to the mobile carriage.
  • the mobile carriage is provided with a locking means, for example a hook, which can be hooked on the upper end of the guide column so as to maintain the chainsaw in position d 'waiting.
  • a locking means for example a hook
  • the bridge comprises a means for clamping the ball to be cut against the bridge, said means adapting to the format of the ball and being provided with a control member operable at the foot.
  • said clamping means is constituted by a clamp formed of elements connected end to end and articulated together in the manner of the knuckles of a finger, and assisted by a return spring.
  • the invention therefore consists of integrated equipment, the constituent elements of which are joined together so as to form a material and functional whole.
  • the combination thus produced results in the presence at one end of the bridge and being integral with it, of a carrying structure of the chainsaw and allowing its vertical displacement from bottom to top and vice versa, by serving as a guide.
  • the operator's role is limited to slowing down the cutting tool subjected to its own weight, until it comes into contact with the ball, to perform the sawing operation of a section, then to reassemble the tool to a standby position at the upper end of the support structure.
  • the operator then advances the ball by a distance equal to the desired length of section and begins the elementary operating cycle indicated above.
  • the proposed equipment therefore makes it possible to reduce operator intervention on the chainsaw to the strict minimum, which is likely to limit the risk of injury and delay, or even eliminate, the appearance of fatigue, even in the case a heavy and unwieldy tool, like the usual chainsaws.
  • the equipment according to the invention is perfectly suitable for the use of a chainsaw with motorized chain with incorporated motor from which it makes it possible to derive maximum profit.
  • the complete equipment shown in FIGS. 1 and 2 is composed of an easel 1 and a structure 3 for supporting and guiding a chainsaw 2.
  • FIG. 2 The schematic representation which is made of it in FIG. 2 (as well as in FIGS. 4 and 6) shows the cutting member constituted by a chain saw 50 mounted in closed loop around a blade guide 51 of which one end is engaged in the housing 52.
  • the latter contains the chain drive thermal engine 50 as well as the fuel tank.
  • the bridge jointly ensures the stability on the ground of the equipment, the positioning and the support of the cutting-off ball, represented in 4, and an adequate ground clearance of this, compatible with normal working conditions, in standing position. .
  • the bridge is composed of a cradle 5 forming a dihedral open upwards, in which the ball 4 rests, and a tripod 6 on which the cradle is mounted.
  • the latter is formed, on the one hand, by a frame 7 arranged obliquely and having a superior side. laughing 8, a lower side 9, both horizontal, and two inclined lateral sides 10 and 10 ', and, on the other hand, by vertical elements 11 mounted on the lateral sides of the frame 7 and serving as stops cooperating with the sides lateral to hold the ball 4 when it is placed on the frame 7.
  • an additional bar 12 also carrying a vertical element 11, is provided inside the frame, parallel to the lateral sides, in the vicinity of the side close to the support structure 3.
  • Such an arrangement makes it possible to stabilize the balls that are initially short, or shortened during the cutting operation.
  • the location of the stops 11 on the sides of the frame 7 and on the bar 12 is determined so that, as can be seen in Figure 2, the entire cross section of the ball 4 is always placed under the chain 50, in front of the front face 55 of the housing 52, within the limits of the cutting length defined by the length of the blade guide 51. This prevents the body of the ball to be cut to obstruct the passage of the housing 52 when it is moving vertically from top to bottom on its guide column 17 at the time of cutting.
  • the tripod 6 has a very long foot 13 fixed to the central part of the upper side 8 of the frame, and two feet 14 and 15 fixed to the ends of the lower side 9.
  • the rigidity of the bridge is ensured by a spacer 16 connecting the foot 13 to the lower side 9 of the frame.
  • the entire bridge is made by welding commercial square tubular profiles.
  • the structure 3 ensures both the vertical guiding of the chainsaw during work, and its maintenance in the waiting position.
  • This structure is composed of a column 17 arranged in the vicinity of one end of the easel and of a chainsaw carriage 18 mounted movably on the column 17.
  • the structure 3 and the easel 1 form a one-piece assembly, the common element being the column 17, the lower part of which forms the foot 15 of the easel.
  • the lower side 9 of the frame has an end portion 19 extending slightly beyond the limit of the frame 7 and fixed at its end to the column 17, which thus forms both a tripod leg and the guide support. of the mobile carriage 18.
  • the column 17 is an "H" profile, along which the chainsaw carriage 18 moves.
  • the latter has two cheeks 20 and 21 arranged parallel to the members of the profile and connected to each other at a distance by four spacers 22.
  • Each spacer constitutes an axis of rotation carrying a roller 23 placed in contact with the core 24 of the profile.
  • the carriage thus produced therefore comprises four rollers 23 arranged in pairs opposite one another with respect to the core 24. These rollers move in the two grooves formed by the “H” profile, the faces of which the core serve as a rolling surface and whose members play the role of guide rails.
  • the cheek 20 of the carriage is provided with a bearing 26 for fixing the chainsaw 2 horizontally by bolting to the side of the motor housing 52 thereof.
  • the plate 26 is attached to the cheek 20 by means of a spacer 25.
  • the other cheek referenced 21, is provided with a clevis 27 on which is articulated a locking pawl 28 oriented vertically.
  • the upper end of the pawl forms a hook curved inwards and slightly beyond the limits of the carriage so as to be able to bear on the end of the column 17 when the carriage is in the high position. This ensures the locking of the system during the waiting phases.
  • the release is done simply by hand by spreading the pawl outwards.
  • a safety catch 29 in which the locking pawl 28 engages.
  • this catch is not not indispensable. It is justified, if necessary, when the pawl is centered on the cheek 21. If it is shifted slightly, it can then hang, with equal safety, directly at the end of the frame.
  • the equipment which has just been described is more specially designed for small and medium chainsaws.
  • FIGS. 5 and 6 In the case of heavier chainsaws, it is advantageous to opt for the alternative embodiment shown in FIGS. 5 and 6 and which employs a counterweight balancing the weight of the mobile assembly consisting of the carriage and the chainsaw .
  • the chainsaw carriage here referenced 31, is entirely enveloping and its size has been determined so as to be able to engage around the tubular upright 30.
  • it has a horizontal plate 32 shaped as "T *". on which is fixed a chainsaw 2 'of large size.
  • the carriage 31 has an additional spacer 33 whose role is explained below.
  • a mass 34 is suspended inside the tubular upright, serving as a counterweight for the mobile assembly.
  • the counterweight 34 is connected, by a cable 35, to the spacer 33 of the carriage by means of a grooved pulley 36 provided, for this purpose, at the open upper end of the upright 30.
  • This counterweight can advantageously consist of stacked and removable cast iron plates, the variable number of which is determined in each case, as a function of the weight of the chainsaw 2 ′ chosen.
  • the locking pawl can be eliminated since, if the condition of equilibrium is fulfilled by the counterweight 34, the mobile assembly remains fixed whatever its height position on the amount.
  • One end of the chain is fixed to the bridge at a level lower than that of the ball 4 and opposite the operator relative to the latter.
  • a tightening control member consisting of a stirrup 38 which can accommodate the operator's foot.
  • the central part of the chain encircles, as can be seen, the top of the ball and the tightening thereof on the bridge is ensured by simple pressure of the operator's foot in the stirrup. The operator thus keeps his hands available for operating the chainsaw.
  • a preferred embodiment of the clamping means is shown in Figure 7, and consists of a clamp 40, (intentionally enlarged), formed of a succession of tubular elements 41 placed end to end and hinged together in the manner of phalanges of a finger.
  • This clamp is fixed at one of these ends to an insert 42 connecting the side 10 'to the bar 12 (FIG. 1) in the vicinity of the uprights 11.
  • the other end, left free, is provided with a claw 43 and is connected, by a cable 44 passing through all the elements 41, to a pedal 45 having for this purpose a fixing ring 46.
  • the pedal 45 which can be actuated at one end by the operator's foot, has its other end engaged in a hinge clevis 47 fixed to the base of the foot 13 of the bridge.
  • An elastic tensioner 48 is provided along the clamp 40 on its outer side. This tensioner acts as a return spring that automatically opens the clamp when the control pedal is no longer pressed.
  • Stops 49 are also provided on the elements 41 and which cooperate with the latter at each point of articulation of the clamp to block its opening movement when all the elements are aligned.
  • the equipment according to the invention advantageously consists of a metal frame composed of profiles or tubes which are easily found in commerce and assembled together by welding. This produces an assembly at low cost, combining strength and lightness.
  • the equipment can be very rustic since the work to be carried out is not subject to any particular precision requirements.
  • the stops 11 of the frame 7 are not necessarily vertical. Although this orientation is the most advantageous, it remains possible to provide inclined stops in so far as the vertical plane passing through the front face 55 of the housing 52 is never dry with the ball to be cut on the one hand, and in measurement, on the other hand, where this vertical plane is a plane tangent to the ball when the latter has a maximum format compatible with its cutting by a single cutting operation, that is to say of a format whose diameter , in the cutting plane, is equal to the useful cutting length.
  • the easel can have three or more feet.
  • one of the legs must be part of the structure 3 for supporting and guiding the chainsaw, it is only important that said leg is offset outside the limits of the bridge at one of its ends.
  • the shift can of course take place to the right or to the left of the bridge, depending on whether the equipment is intended for a right-handed or left-handed operator respectively.
  • This arrangement has the advantage of being able to temporarily reduce the size of the equipment and thus make it more easily transportable.
  • apron 39 placed between the foot 13 and the base of the support column, and intended to protect the operator's foot against the fall of cut sections by strengthening, in addition , the solidity of the whole.
  • a retractable stop allowing, when desired, to easily disengage the carriage from its support so as to facilitate its assembly with the chainsaw or to avoid disassembly thereof, when wish to use it for other work.
  • the rolling carriage can be replaced by a sliding carriage, for which a simple functional clearance with the guide upright will be provided.
  • the chainsaw can then be suspended from this axis, as described in French patent n ° 2440818 (Lacour) already cited, using for example a pivoting sleeve and provided with an anchoring piece fixed on the top crankcase 52.
  • the invention is not limited to cutting up logs to make heating logs, but that its field of use extends to operations for cutting other parts, such as boards, rafters, beams, etc ... as well as parts made of any material other than wood, capable of being sawn.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
EP82440001A 1981-02-02 1982-01-26 Equipement pour le tronçonnage de billes de bois, ou analogues Expired EP0057654B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82440001T ATE21059T1 (de) 1981-02-02 1982-01-26 Einrichtung zum ablaengen von hoelzern und dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8102083 1981-02-02
FR8102083A FR2498973A1 (fr) 1981-02-02 1981-02-02 Equipement pour la decoupe de pieces en bois, ou materiaux similaires, notamment pour le tronconnage de buches

Publications (3)

Publication Number Publication Date
EP0057654A2 EP0057654A2 (fr) 1982-08-11
EP0057654A3 EP0057654A3 (en) 1982-08-25
EP0057654B1 true EP0057654B1 (fr) 1986-07-30

Family

ID=9254801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82440001A Expired EP0057654B1 (fr) 1981-02-02 1982-01-26 Equipement pour le tronçonnage de billes de bois, ou analogues

Country Status (4)

Country Link
EP (1) EP0057654B1 (enrdf_load_stackoverflow)
AT (1) ATE21059T1 (enrdf_load_stackoverflow)
DE (1) DE3272231D1 (enrdf_load_stackoverflow)
FR (1) FR2498973A1 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523027B1 (fr) * 1982-03-15 1986-05-30 Brusseau Luc Dispositif mobile pour debiter en masse des billes de bois, fagots, planches et autres
GB8400321D0 (en) * 1984-01-06 1984-02-08 Williamson C J Portable sawbench
GB2170146A (en) * 1985-01-24 1986-07-30 Paul David Bentley Portable cord horse
FR2597024A1 (fr) * 1986-04-11 1987-10-16 Bineau Guy Adaptation d'une scie motorisee sur un container pour sciage de buches
GB2200319A (en) * 1987-01-27 1988-08-03 Gordon Kenworthy Restraint and holding device
GB2289643B (en) * 1994-11-02 1996-01-31 Alexander Reid Sharp Support device
ATE421412T1 (de) * 2001-03-02 2009-02-15 Landrock Gmbh Verfahren zum ablängen von gebündelten holzstücken zu stückholz
DE102004003499A1 (de) * 2003-08-12 2005-03-10 Hans Plewan Sägetisch, insbesondere für Kettensägen
US7140409B2 (en) * 2004-11-01 2006-11-28 Matthew Leberfinger Portable pipe cutting apparatus
FR2880298B1 (fr) * 2004-12-30 2010-10-29 Maxime Rouvier Dispositif pour maintenir fermement buches ou fagots en porte-a-faux pendant leur tronconnage
GB201018700D0 (en) * 2010-11-05 2010-12-22 Forest Master Ltd Log holder and log holder assembly

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB570530A (enrdf_load_stackoverflow) * 1900-01-01
USRE24129E (en) * 1956-03-13 Cutting chain for saws
US846663A (en) * 1906-06-21 1907-03-12 Albert M Granbery Chain-saw.
DE537989C (de) * 1930-04-12 1931-11-09 Gerhard Wolfram Tragbares Arbeitsgeraet
GB580437A (en) * 1944-12-15 1946-09-06 Henry John Alexander Improvements in and relating to power driven chain saws
DE1006607B (de) * 1955-06-16 1957-04-18 Stihl Andreas Vorrichtung zum Ablaengen von auf einem Wagen gestapelten Brettern
CH374192A (de) * 1959-11-03 1963-12-31 Salfinger Karl Sägeeinrichtung
DE1247977B (de) * 1963-06-21 1967-08-17 Erwin Pirchegger Zusammenlegbarer Unterstellbock
FR1384843A (fr) * 1963-11-29 1965-01-08 Tromeca Appareil pour le tronçonnage des bois
GB1049278A (en) * 1965-06-29 1966-11-23 Trevan Saw Conversion Unit Co Improvements in and relating to a conversion unit for converting a long length of material into shorter lengths
FR1499608A (fr) * 1966-11-03 1967-10-27 Chevalet de tronçonnement pour outils portatifs de sciage et autres
AU442472B2 (enrdf_load_stackoverflow) * 1970-05-15 1973-11-07
DE2546907A1 (de) * 1975-10-20 1977-06-02 Heinz Zerfass Arbeitsgeraet fuer das bau- und ausbauhandwerk
FR2367577A1 (fr) * 1976-10-14 1978-05-12 Boulot Annic Banc a structure modi
US4208937A (en) * 1978-09-20 1980-06-24 Lynn Marshall Apparatus for accurately cutting timbers
FR2437915A1 (fr) * 1978-10-03 1980-04-30 Rafer Chaines Roues Dentees Chevalet de sciage
FR2440818A1 (fr) * 1978-11-07 1980-06-06 Lacour Roger Dispositif pour debiter des billes de bois, des planches ou autres

Also Published As

Publication number Publication date
ATE21059T1 (de) 1986-08-15
FR2498973B1 (enrdf_load_stackoverflow) 1984-08-24
EP0057654A2 (fr) 1982-08-11
DE3272231D1 (en) 1986-09-04
EP0057654A3 (en) 1982-08-25
FR2498973A1 (fr) 1982-08-06

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