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EP0029831B1 - Poteau en bois pour lignes electriques ou analogues et machine de fabrication d'un tel poteau - Google Patents

Poteau en bois pour lignes electriques ou analogues et machine de fabrication d'un tel poteau Download PDF

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Publication number
EP0029831B1
EP0029831B1 EP80900973A EP80900973A EP0029831B1 EP 0029831 B1 EP0029831 B1 EP 0029831B1 EP 80900973 A EP80900973 A EP 80900973A EP 80900973 A EP80900973 A EP 80900973A EP 0029831 B1 EP0029831 B1 EP 0029831B1
Authority
EP
European Patent Office
Prior art keywords
pole
stave
staves
spindle
milling
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
EP80900973A
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German (de)
English (en)
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EP0029831A1 (fr
Inventor
Hallvard Berge
Leif Stokkeland
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Individual
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Individual
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Filing date
Publication date
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Publication of EP0029831A1 publication Critical patent/EP0029831A1/fr
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Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/127—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with hollow cross section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
    • B27F1/02—Making tongues or grooves, of indefinite length
    • B27F1/06—Making tongues or grooves, of indefinite length simultaneously along opposite edges of a board
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
    • B27M3/0026—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally
    • B27M3/0053—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally using glue
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/04—Structures made of specified materials of wood

Definitions

  • the present invention relates to a wooden pole, especially for line carrying in connection with power lines or the like, and comprising a plurality of elongated staves having trapezium cross-section with parallel inner and outer surfaces and side faces forming a mutual angle of 360/n degrees, n being the number of staves in the pole, the staves being glued together along adjacent side faces to form a pole with a centrally extending hollow space.
  • the known standard or pole consists of four main side elements and four relatively narrow corner elements, the side elements being tapering from the bottom to the top whereas the four corner elements have constant width along the whole length, and in addition loose fillets are inserted in grooves in the adjacent element surfaces to reinforce the structure.
  • the known standard consists of differently shaped elements and is not so rational to manufacture as is desirable and necessary in connection with e.g. power line masts. Further, it has not the same strength and rigidity in all directions, and especially by larger standards of this type there will easily occur cracks, especially in the wide side faces, which cracks are weakening and detrimental.
  • the object of the present invention is to remedy the above-mentioned lack of suitable poles of wood, and to provide a pole which may be manufactured rationally and economically and with a minimum of material consumption yields the desired rigidity and strength in all directions, at the same time as the pole may be manufactured with the lengths and diameters and with their conicity which might be needed in each different case.
  • the above-mentioned object is achieved with a wooden pole of the type set forth above, and which is characterized in that all of said staves are equally shaped in a number which, for the cross-sectional dimension of the pole in question, is sufficiently large to achieve a laminated structure in the circumferential direction of the pole, and that the individual -stave lengths corresponding to the desired length of the pole comprise finger-jointed sections as required.
  • the laminated, axis-symmetrical pole or mast structure By means of the laminated, axis-symmetrical pole or mast structure according to the invention there is achieved maximum strength and bending resistance in relation to the cross-section of the used materials, and the same strength and bending resistance in all directions. This is of importance by erection, as one does not have to orient the standard or mast in a definite direction.
  • the used staves are equally shaped and identical, a rational production of standards or masts is made possible, also for masts of large heights.
  • the laminated structure is very resistant to crack formations, and also the feature that the stave elements as required are finger-jointed for achieving the necessary length, is essential for easy and rational provision of high-quality materials, as knots or other weakening irregularities may easily be eliminated.
  • the poles are manufactured in that the identical staves are glued together after that the individual sections of the staves at the outset have been finger-jointed in the length in question.
  • the individual stave blanks may in advance be made of several sub-lamellae which are glued together in the radial and/or tangential direction of the pole, so that it is ensured that existing demands made on a laminated structure, are satisfied in each individual case, also in connection with particularly long masts having a relatively large diameter at the bottom.
  • a machine comprising a means for feeding stave blanks for machining; and a milling device for shaping the stave blanks, the milling device comprising a pair of milling spindle holders arranged on respective sides of said feeding means and being adjustable at a desired angle relative to each other, for shaping of opposite side faces of the stave blanks by means of milling tools on the milling spindles, and which is characterised in that one of said spindle holders is arranged to be moved continuously and linearly outwards away from the other spindle holder during feeding of a stave blank and with a speed which is related to the feeding speed of the stave blank, and that means are provided for start and stop of the movement of said spindle holder and being actuated by the forward and rearward end, respectively, of a stave blank, together with a means for automatic return of the spindle holder to the initial position by stop of said movement.
  • a pole or standard 1 which is composed of twelve elongated, equal stave elements 2 which, such as appears from Fig. 2, have trapezium cross-section with mutually parallel inner and outer surfaces, and opposite side faces forming an angle of 30° to each other.
  • the twelve stave elements or lamellae span a full circle (360°).
  • the staves are glued together along adjacent or abutting side faces, so that there is formed a laminated pole having a centrally extending hollow space or cavity.
  • the staves are uniformly tapering from the lower end as viewed in Fig. 1, so that an upwards tapering or conical pole 1 is formed.
  • the side faces of the staves are provided with mutually engaging profiles, e.g. as illustrated in the form of tongue and groove connections 3, 4. These connections facilitate the joining during assembly of the stave elements.
  • such a pole may comprise a larger or smaller number of staves or lamellae, and that it may be manufactured with large or small conicity or taper, or possibly with constant cross-section when the stave width, i.e. the distance between the side faces of the staves, is constant in the longitudinal direction.
  • a tubular sleeve 5 (shown with dashed lines) is placed on the upper end portion of the pole 1 and is provided with angles or hooks 6 for insulators (not shown). Further, a sealing top cover 7 is placed on the sleeve.
  • This sleeve which may be of standardized design, results in a substantially easier assembly of the insulator holders than previously, at the same time as they may be made stronger and better fixed. Further, such a device will preserve and protect the top of the pole against rot.
  • each of the identical staves or lamellae in the pole may be glued together of one or more sub-lamellae (or constituent or partial lamellae), so that existing demands applying to a laminated structure with respect to composition and structure, are also satisfied with large pole dimensions wherein the individual stave elements may have a substantial width at the bottom of the pole.
  • Fig. 3 there is shown a pole cross-section wherein the individual staves or lamellae are glued together by a pair of sub or part lamellae 8 and 8' juxtaposed in the tangential direction of the pole, and in Fig.
  • FIG. 4 there is shown a cross-section wherein the individual staves are glued together by a pair of sub or part lamellae 9 and 9' located one outside the other, i.e. glued together in the radial direction of the pole.
  • the number of sub-lamellae may of course also be larger than two, as required.
  • the staves or lamellae are provided with zig-zag guiding profiles 3', 4' for a purpose corresponding to that of the groove and tongue connections 3, 4 in Fig. 2.
  • Such or similar guiding profiles may also be arranged on the staves in the embodiment according to Fig. 4.
  • FIG. 5 A machine for manufacturing or producing staves for the pole described above is shown in Figs. 5 and 6.
  • the machine is built up on a frame 10 and comprises essentially a means for feeding of stave blanks for processing or machining, a milling device for processing or shaping of the stave blanks and means for operation and control of the feeding and milling devices.
  • the machine is based on electro-pneumatic, or possibly electro-hydraulic operation, and is only schematically illustrated in Figs. 5 and 6, as only the main elements of the machine are illustrated, whereas conventional details which will be known to a person skilled in the art, are omitted. Thus, neither the electric wiring for the machine, nor its pneumatic conduit laying with associated control units, are shown in the Figures.
  • Fig. 5 the machine is shown from the feeding or input side, and a processed or machined stave element 11 is shown crosshatched between a pair of cutter or milling tools 12 and 13, respectively, on respective milling spindle holders 14a and 15a.
  • the stave blank 11 is advanced or fed by means of a feeding means, the left side of the blank in Fig. 5 resting against a longitudinally extending guiding rule 16 which is also shown to be hatched in Fig. 5.
  • the feeding means comprises an endless feed belt in the form of a chain 17 running over associated sprocket wheels (not more closely shown) and supporting the stave blanks with its upper horizontal belt section.
  • the feed belt 17 is driven by a feed motor 18 mounted on the frame 10, the motor being coupled through a belt or chain drive means 19 to a feed shaft 20 mounted in the frame 10 and on which the driven sprocket wheel of the feed belt 17 is mounted.
  • the milling device comprises a pair of milling units 14 and 15 arranged on respective sides of the feed belt 17, the milling units having milling spindle holders 14a and 15a, respectively, which are inclined towards each other such as shown In Fig. 5, and which may be adjusted at a desired angle relative to each other and to the stave blanks such as more closely described below.
  • Each of the spindle holders is mounted on a respective slide block 21 and 22, respectively, which is in turn slidably mounted on respective, double guides 23 and 24, respectively.
  • the guides are attached to and supported by respective flanges on brackets 25 and 26, respectively, which are in turn attached, e.g. by welding, to respective, upwards extending columns 27 and 28, respectively, in the machine frame 10, whereas the inner ends of the guides are supported by a common supporting element 29.
  • the left milling unit 14 in Figs. 5 and 6 in the illustrated embodiment is fixed during operation of the machine, the slide block 21 being fixedly mounted on the guide 23, whereas the slide block 22 of the right milling unit 15 is slidable on the guide 24 and is arranged to be moved automatically outwards away from the other milling unit with a suitable speed in relation to the feeding speed of the stave blanks, so that these get the intended conicity or taper during the milling process.
  • a drive belt in the form of a chain belt 30 which extends transversely in relation to the feed belt 17.
  • This chain belt 30 is driven from the feed shaft 20 through an angular drive gear 31 and a cog wheel reduction gear 32 connected thereto.
  • the angular drive gear 31 is coupled to the feed shaft 20 through a belt or chain drive means 33.
  • the reduction gear 32 comprises means (not more closely shown) for variation of the transmission ratio.
  • a holder 34 on which there is mounted a clamping means 35 which, under the control of a limit switch or the like, is arranged for automatic connection to and disconnection from, respectively, the transversely extending chain belt 30, i.e. for start and stop, respectively, of the outwards movement of the milling unit.
  • the clamping means is a pneumatic (or possibly hydraulic) piston/cylinder unit.
  • the movable milling unit is influenced by a means 36 exerting an inwardly directed, resilient pressure force on the milling unit during its outwardly directed movement, and causing immediate return of the milling unit to the inner position or initial position as soon as the clamping means 35 is released from the drive belt 30.
  • the force-exerting means 36 is a pneumatic (or possibly hydraulic) piston/cylinder unit, but a spring or another arrangement may also be used.
  • each of the tool spindles of the milling units may be included at the milling angle suitable for the chosen number of staves in the pole which is to be manufactured.
  • each of the spindle holders 14a and 15a is releasably mounted on an associated disc or turntable 37 which is fixed to or formed integrally with the respective slide block 21 or 22 and is provided with a circular groove 38 having a T-shaped cross-section wherein the leg of the T constitutes the lead-in opening to the groove.
  • a pair of bolts 39 extending through through- holes in each of the spindle holders such as suggested in Fig. 6, are in engagement in respective T-grooves 38 with their head ends, so that the spindle holders may be fixed in a desired position on the turntables 37 by tightening of nuts on the outer free ends of the bolts.
  • a cutter drive motor 40 and 41 is mounted on each spindle holder and is coupled to the associated tool spindle by means of a suitable belt transmission 42 and 43, respectively.
  • a number of spring-loaded pressure rollers 44 are arranged above the feed belt 17 and press the passing stave blank 11 resiliently downwards against the feed belt.
  • the pressure rollers are mounted in bifurcated holders 45 suspended at suitable intervals along a downwards open channel beam 46 supported by the machine frame 10.
  • the shank portions of the roller holders 45 are passed through apertures in the upper web portion of the channel beam and are also passed through corresponding apertures in a strip-shaped body 47 extending along the channel and preventing the roller holders and thereby the pressure rollers from pivoting in the longitudinal direction of the feed belt.
  • the upper, free end of the roller holders is provided with a head (e.g. a nut) limiting the downward movement of the holders, and between the strip body 47 and the upper web portion of the beam 46 there are introduced biassing springs 48 providing for the spring loading of the rollers.
  • a head e.g. a nut
  • connection and disconnection of the clamping means 35 may advantageously take place by means of suitably mounted limit switches.
  • a limit switch 49 which is mounted to be actuated by the upper head end of the shown roller holder 45.
  • the arrangement for actuation of the clamping means 35 may advantageously be arranged in such a manner that a first limit switch, such as the switch 49, for activation of the clamping means is operatively connected to a pressure roller immediately in front of the milling spindles as viewed in the feeding direction of the stave blanks, whereas a second limit switch for deactivation of the clamping means is operatively connected to a pressure roller immediately behind the milling spindles.
  • the clamping means is connected so that the movable milling unit starts its movement when the forward end of a stave blank arrives at the pressure roller in question, whereafter the clamping means is disconnected and the milling unit is stopped and returned to its initial position when the rearward end of the stave blank passes the pressure roller behind the milling spindles.
  • a stave blank 11 which in advance has been cut in a suitable width and has the desired length, and which possibly consists of several sub-lamellae glued together, is brought to rest against the guiding rule 16 and is inserted under the first pressure roller 44.
  • the stave blank is then advanced by the feed belt 17, and when the stave passes the first limit switch, the clamping means 35 is coupled to the drive belt 30.
  • the movable milling unit 15 is moved outwards with a speed which is related to the speed of the feed belt.
  • the pressure-exerting means 36 will keep the unit stable by a suitable force during the movement.
  • the stave element will now get a uniform increase in the width along the whole length of the stave, and this increase may be chosen by changing the ratio between the speeds of the feed belt 17 and the transversely extending drive belt 30.
  • the conicity or taper of the staves can be changed at any time, e.g. by exchanging cog wheel in the reduction gear 32 or by utilizing a stepless variator. If another number of staves in the pole is desired, the position angle of the milling tool spindles may be changed to the number of degrees which is suitable for a chosen number of staves.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Forests & Forestry (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Milling Processes (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Jigs For Machine Tools (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Fish Paste Products (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

Un poteau en bois pour des lignes electriques ou autre comprend un certain nombre d'elements longitudinaux (2) qui presentent une section trapezoidale et des faces laterales formant un angle mutuel de 350/n degre, n etant le nombre d'elements longitudinaux du poteau, ces elements etant colles les uns aux autres le long de leurs bords lateraux pour former un poteau (1) presentant un espace creux central. Tous les elements longitudinaux (2) sont des lamelles de forme egale dont le nombre, pour les dimensions de la section en question, est suffisamment important pour que l'on obtienne une structure lamellaire dans la direction circonferentielle du poteau, et les lamelles individuelles sont assemblees par tenon afin que la longueur desiree du poteau puisse etre obtenue. Une machine pour la fabrication des elements longitudinaux constituant un tel poteau comprend un dispositif de fraisage consistant en une paire de porte-broches (14a, 15a) disposes sur les cotes d'un moyen d'alimentation (17) en ebauches (11), et qui peuvent etre regles angulairement. Cette machine possede egalement des outils de fraisage (12, 13) pour l'usinage des faces laterales opposees des ebauches d'elements longitudinaux. L'un des porte-broches (15a) peut, au cours de la presentation d'une ebauche (11), etre deplace vers l'exterieur et en s'ecartant de l'autre porte-broche (14a) a une vitesse qui est en fonction de la vitesse d'alimentation en ebauches (11). Le mouvement du porte-broche (15a) est declenche et stoppe automatiquement par des moyens actionnes par l'extremite avant et arriere, d'une ebauche (11), et le porte-broche (15a) revient automatiquement a sa position initiale en raison de l'arret de ce mouvement.

Claims (13)

1. Poteau en bois, en particulier pour le transport par ligne en connexion avec des lignes de transport d'énergie ou analogue, et comprenant un certain nombre de tronçons allongés (2) ayant une coupe transversale en trapèze avec des surfaces internes et externes parallèles et des faces latérales formant un angle mutuel de 360/n degrés, n étant le nombre de tronçons dans le poteau, les tronçons étant collés ensemble le long de faces latérales adjacentes pour former un poteau avec un espace creux s'étendant en son centre, caractérisé en ce que tous lesdits tronçons (2) sont de configuration égale en un nombre qui, pour la dimension en coupe transversale du poteau (1) en question, est suffisamment important pour obtenir une structure laminée en direction circonférentielle du poteau, et en ce que les longueurs des tronçons individuels correspondant à la longueur souhaitée du poteau comprennent des sections jointes par des doigts selon ce qui est requis.
2. Poteau selon la revendication 1, caractérisé en ce que la largeur des tronçons (2) entre les faces latérales diminue uniformément en direction longitudinale.
3. Poteau selon la revendication 1 ou 2, caractérisé en ce que les tronçons (2) le long de leurs faces latérales sont pourvus de profils en engagement mutuel, comme des connexions mâle et femelle (3, 4).
4. Poteau selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il est pourvu d'un manchon tubulaire en métal (5) qui est configuré sur la partie supérieure du poteau (1) et y est inséré, et il est pourvu d'un moyen isolant de maintien (6) attaché au manchon.
5. Poteau selon la revendication 4, caractérisé en ce que le manchon (5) est pourvu d'un couvercle supérieur obturateur (7).
6. Machine de fabrication de tronçons pour un poteau en bois selon la revendication 2, comprenant un moyen (17-20) pour amener des ébauches (11) pour l'usinage, et un dispositif à meuler (14, 15) pour configurer les ébauches de tronçons, le dispositif à meuler comprenant deux porte-broches (14a, 15a) agencés sur les côtés respectifs dudit moyen d'alimentation (17) et étant réglables à un angle souhaité l'un par rapport à l'autre, pour configurer les faces latérales et opposées des ébauches de tronçons au moyen d'outils à meuler (12, 13) sur les broches à meuler, caractérisée en ce que l'un des porte-broches (15a) est agencé pour être déplacé continuellement et linéairement vers l'extérieur au loin de l'autre parte-broche (14a) pendant l'alimentation d'une ébauche de tronçon et avec une vitesse qui est en rapport avec la vitesse d'alimentation de l'ébauche de tronçon (11) et en ce que des moyens sont prévus pour mettre en marche et arrêter le mouvement du porte-broche (1 5a) et qui sont actionnés par l'extrémité avant et arrière respectivement d'une ébauche de tronçon (11), ainsi qu'avec un moyen pour le retour automatique du porte-broche (15a) à sa position initiale à l'arrêt dudit mouvement.
7. Machine selon la revendication 6 où le moyen d'alimentation comprend une bande sans fin de support et d'alimentation de l'ébauche de tronçon (17) entraînée par un arbre motorisé d'alimentation (20), caractérisée en ce qu'on prévoit une bande d'entrainement (30) qui s'étend transversalement à la direction d'alimentation de l'ébauche du tronçon, laquelle bande d'entrainement est entrainée par l'arbre d'alimentation (20) au moyen d'un réducteur (32) à rue dentée et est agencée pour entrainer ledit porte-broche mobile (15a) dans son mouvement dirigé vers l'extérieur.
8. Machine selon la revendication 7, caractérisée en ce que le porte-broche (15a) est monté sur un bloc coulissant (22) qui est coulissant sur un guide horizontal (24) et sur ledit bloc coulissant (22) est monté un moyen de serrage (35) qui est agencé pour une connexion automatique ou respectivement déconnexion par rapport à ladite bande d'entrainement s'étendant transversalement (30) pour la mise en marche et l'arrêt respectivement du mouvement dirigé vers l'extérieur dudit porte-broche (15a).
9. Machine selon la revendication 8, caractérisée en ce qu'elle comprend un moyen (36) pour exercer une force dirigée vers l'intérieur sur le porte-broche (15a) pendant son mouvement dirigé vers l'extérieur et pour provoquer un retour immédiate du porte-broche (15a) à sa position initiale par libération du moyen de serrage (35) par rapport à la bande d'entraine- ment (30).
10. Machine selon la revendication 9, caractérisée en ce que le moyen (36) exerçant une force est une unité cylindre/piston pneumatique ou hydraulique.
11. Machine selon l'une quelconque des revendications 8 à 10, caractérisée en ce que le moyen de serrage (35) est une unité à piston/cylindre pneumatique ou hydraulique qui est agencée pour être activée ou désactivée au moyen de commutateurs resectifs actionnés lors du passage de l'extrémité avant et arrière respectivement d'une ébauche de tronçon (1 1
12. Machine selon la revendication 11, où un certain nombre de rouleaux de pression (44) chargés par ressort sont agencés au-dessus de la bande d'alimentation (17), et au passage d'une ébauche (11) de tronçon, pressent l'ébauche élastiquement vers le bas contre la bande d'alimentation (17), caractérisée en ce qu'un premier commutateur (49) pour activer le moyen de serrage (35) est activement connecté à un rouleau de pression (44) immédiatement à l'avant des porte-broches de meulage (14a, 15a) en regardant dans la direction d'alimentation des ébauches de tronçon (11) et un second commutateur pour désactiver le moyen de serrage (35) est activement connecté à un rouleau de pression (44) immédiatement derrière les porte-broches de meulage.
13. Machine selon l'une quelconque des revendications 8 à 12, caractérisée en ce que chaque porte-broche (14a, 15a) est monté pivotant sur un plateau tournant (37) au moyen de boulons détachables (39) engageant et pouvant être fixes à une position souhaitée dans une gorge circulaire (38) formée dans le plateau tournant (37).
EP80900973A 1979-05-31 1980-12-15 Poteau en bois pour lignes electriques ou analogues et machine de fabrication d'un tel poteau Expired EP0029831B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO791814 1979-05-31
NO791814A NO150525C (no) 1979-05-31 1979-05-31 Trestolpe for kraftlinjer eller liknende, samt maskin forfremstilling av samme

Publications (2)

Publication Number Publication Date
EP0029831A1 EP0029831A1 (fr) 1981-06-10
EP0029831B1 true EP0029831B1 (fr) 1983-07-13

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Application Number Title Priority Date Filing Date
EP80900973A Expired EP0029831B1 (fr) 1979-05-31 1980-12-15 Poteau en bois pour lignes electriques ou analogues et machine de fabrication d'un tel poteau

Country Status (12)

Country Link
EP (1) EP0029831B1 (fr)
AT (1) AT380717B (fr)
AU (1) AU5986580A (fr)
CA (1) CA1144734A (fr)
DE (1) DE3047565A1 (fr)
DK (1) DK160715C (fr)
ES (1) ES492047A0 (fr)
FI (1) FI801707A (fr)
GB (1) GB2064618B (fr)
NO (1) NO150525C (fr)
SE (1) SE443014B (fr)
WO (1) WO1980002709A1 (fr)

Cited By (1)

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WO2011018758A1 (fr) * 2009-08-11 2011-02-17 John Mathias Reelick Structures allongées produites à partir de douves profilées
KR101166514B1 (ko) * 2009-09-14 2012-07-20 염택상 가로등주 및 그 제조방법
CN103967213A (zh) * 2013-01-24 2014-08-06 大兴安岭神州北极木业有限公司 承载集成空心木柱及生产工艺
BE1024604B1 (fr) 2016-09-26 2018-04-25 Patrick Moutschen Element de construction allonge creux
CN107932655A (zh) * 2017-12-20 2018-04-20 湖北康欣新材料科技有限责任公司 一种木结构用多棱空心圆柱及其生产方法
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CN102587579A (zh) * 2012-03-19 2012-07-18 南京工业大学 一种空芯层板胶合木圆木柱及制备方法
CN102587579B (zh) * 2012-03-19 2014-05-28 南京工业大学 一种空芯层板胶合木圆木柱及制备方法

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NO150525B (no) 1984-07-23
AU5986580A (en) 1980-12-22
DK160715C (da) 1991-09-23
DK26281A (da) 1981-01-21
AT380717B (de) 1986-06-25
NO150525C (no) 1992-02-11
ATA904780A (de) 1985-11-15
ES8104736A1 (es) 1981-04-16
SE8100526L (sv) 1981-01-28
DE3047565A1 (en) 1982-02-25
DK160715B (da) 1991-04-08
WO1980002709A1 (fr) 1980-12-11
EP0029831A1 (fr) 1981-06-10
GB2064618A (en) 1981-06-17
CA1144734A (fr) 1983-04-19
ES492047A0 (es) 1981-04-16
SE443014B (sv) 1986-02-10
NO791814L (no) 1980-12-02
GB2064618B (en) 1983-11-16
FI801707A (fi) 1980-12-01

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