EP2188466B1 - Metal pole and production method therefor - Google Patents

Metal pole and production method therefor Download PDF

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Publication number
EP2188466B1
EP2188466B1 EP08845883A EP08845883A EP2188466B1 EP 2188466 B1 EP2188466 B1 EP 2188466B1 EP 08845883 A EP08845883 A EP 08845883A EP 08845883 A EP08845883 A EP 08845883A EP 2188466 B1 EP2188466 B1 EP 2188466B1
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Prior art keywords
pole
merlons
post
folding
head
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German (de)
French (fr)
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EP2188466A2 (en
Inventor
Philippe Gallet
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PETITJEAN Sas
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PETITJEAN Sas
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    • 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
    • E04H12/08—Structures made of specified materials of metal

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Manufacture Of Switches (AREA)
  • Arc Welding In General (AREA)
  • Golf Clubs (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Laser Beam Processing (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The post has a metallic plate cut from a strip of a steel sheet and provided with a base and a post head, and a polygonal shaft and an obturator made of same material. The obturator is formed by folded edges (6, 8) of a tooth that is arranged in the post head of the plate. The post head of the plate is cut by a thermal device such as plasma or laser, for forming the tooth, where the thermal device is controlled by a digital control. An independent claim is also included for a method for manufacturing a metallic telephone post.

Description

La présente invention concerne un poteau métallique, notamment un poteau téléphonique. Elle concerne également un procédé de fabrication de ce poteau.The present invention relates to a metal pole, including a telephone pole. It also relates to a method of manufacturing this pole.

Les poteaux, notamment les poteaux supports de lignes téléphoniques, sont actuellement obturés à l'aide d'une pièce rapportée formant obturateur.The poles, including telephone line support poles, are currently closed by means of a shutter insert.

Une fonction importante de cet obturateur est la protection de l'avifaune, en rendant impossible l'accès des oiseaux à l'intérieur du poteau installé. En effet, si cet accès était possible, le poteau installé verticalement constituerait un piège pour les oiseaux.An important function of this shutter is the protection of birdlife, making it impossible for birds to get inside the installed post. Indeed, if this access was possible, the vertically installed pole would be a trap for the birds.

L'utilisation d'un obturateur rapporté n'est pas satisfaisante car cet obturateur peut être endommagé ou démonté pendant le transport, la manutention ou l'installation du poteau. De plus, il convient de prévoir des obturateurs de tailles différentes selon la section de la tête de poteau.The use of an attached shutter is not satisfactory because this shutter can be damaged or disassembled during transport, handling or installation of the post. In addition, it is necessary to provide shutters of different sizes according to the section of the pole head.

Le document FR-A-2 785 933 décrit un poteau selon le préambule de la revendication 1.The document FR-A-2,785,933 describes a pole according to the preamble of claim 1.

L'invention a pour but de pallier les inconvénients de l'état de la technique.The invention aims to overcome the disadvantages of the state of the art.

A cette fin, l'invention a pour objet un poteau métallique comprenant un fût et un obturateur de la tête de poteau, dans lequel le fût et l'obturateur viennent de matière, l'obturateur étant formé par des merlons repliés d'un crénelage ménagé dans la tête de poteau.To this end, the invention relates to a metal pole comprising a barrel and a shutter of the pole head, wherein the barrel and the shutter are made of material, the shutter being formed by folded merlons of a aliasing arranged in the pole head.

Par obturation, on entend ici que la tête de poteau ne comporte pas d'orifice de taille dangereuse pour l'avifaune. Il n'est donc pas nécessaire que l'obturation soit complète. En particulier, dans le cas des poteaux supports de lignes téléphoniques, il n'est pas nécessaire que l'obturateur assure une étanchéité, l'entrée d'eau de pluie dans le poteau ne présentant aucun inconvénientBy closing, is meant here that the head of the post does not have an orifice of size dangerous for birdlife. It is therefore not necessary that the shutter is complete. In particular, in the case of poles supporting telephone lines, it is not necessary that the shutter ensures a seal, the entry of rainwater in the post having no disadvantage

Dans d'autres applications, il pourra au contraire être nécessaire que l'obturation soit complète. Ceci peut être obtenu par exemple par chevauchement des merlons repliés.In other applications, it may instead be necessary that the shutter is complete. This can be achieved for example by overlapping folded merlons.

Selon l'invention, l'obturation est donc réalisée par déformation de la matière en continuité avec celle du fût. Cette obturation ne nécessite aucun élément de liaison supplémentaire, ni assemblage par soudure ou autre. Cette disposition garantit la pérennité de l'obturation par l'impossibilité de démontage de pièces.According to the invention, the shutter is thus produced by deformation of the material in continuity with that of the barrel. This closure does not require any additional connecting element, nor assembly by welding or otherwise. This provision ensures the durability of the shutter by the impossibility of dismantling parts.

De manière préférée, le poteau présente une section droite polygonale, notamment hexagonale ou octogonale. D'autres sections, telles que ronde ou ovale, ne sont cependant pas exclues.Preferably, the post has a polygonal cross section, in particular hexagonal or octagonal. Other sections, such as round or oval, are not excluded.

Selon un mode de réalisation avantageux, dans le cas d'un poteau à section polygonale, chaque face comporte un merlon.According to an advantageous embodiment, in the case of a pole with polygonal section, each face comprises a merlon.

L'invention a également pour objet un procédé de fabrication d'un poteau à partir d'une plaque métallique comprenant une base, une tête et deux bords longitudinaux, ledit procédé comprenant les étapes suivantes :

  • découpage de la tête pour former un crénelage alternant des merlons et des créneaux,
  • pliage de la plaque pour réunir les bords longitudinaux de façon à former un fût,
  • repliage des merlons vers l'intérieur du fût pour obturer la tête de poteau.
The invention also relates to a method of manufacturing a pole from a metal plate comprising a base, a head and two longitudinal edges, said method comprising the following steps:
  • cutting of the head to form a crenellation alternating merlons and crenellations,
  • folding the plate to join the longitudinal edges so as to form a drum,
  • folding the merlons into the barrel to close the pole head.

Selon un mode de réalisation préféré, les bords longitudinaux sont réunis par soudage.According to a preferred embodiment, the longitudinal edges are joined by welding.

Avantageusement, la forme et le nombre des merlons et des créneaux sont choisis pour que, après repliage, la tête de poteau ne comporte pas d'orifice dont la plus petite dimension excède 8 mm.Advantageously, the shape and the number of merlons and crenellations are chosen so that, after folding, the head post does not have an orifice whose smallest dimension exceeds 8 mm.

Selon un mode de réalisation préféré, on forme par découpage deux séries de merlons différentes. De préférence, les séries de merlons ont des dimensions longitudinales différentes.According to a preferred embodiment, two sets of different merlons are formed by cutting. Preferably, the series of merlons have different longitudinal dimensions.

L'invention sera mieux comprise à la lumière de la description qui va suivre, faite à titre illustratif et non limitatif, en référence aux dessins annexés sur lesquels :

  • la figure 1 représente une plaque métallique à partir de laquelle un ou deux poteaux sont fabriqués,
  • les figures 2a, 2b et 2c illustrent un premier mode de réalisation d'un crénelage de la tête de poteau selon l'invention respectivement avant repliage, après repliage en vue de dessus et après repliage en vue de côté,
  • les figures 3a, 3b et 3c illustrent un deuxième mode de réalisation d'un crénelage de la tête de poteau selon l'invention respectivement avant repliage, après repliage en vue de dessus et après repliage en vue de côté, et
  • la figure 4 illustre un moyen d'obturation de la tête de poteau.
The invention will be better understood in the light of the following description, given by way of illustration and without limitation, with reference to the appended drawings, in which:
  • the figure 1 represents a metal plate from which one or two posts are made,
  • the Figures 2a, 2b and 2c illustrate a first embodiment of a alto of the column head according to the invention respectively before folding, after folding in a view from above and after folding in side view,
  • the Figures 3a, 3b and 3c illustrate a second embodiment of an alto of the column head according to the invention respectively before folding, after folding in top view and after folding in side view, and
  • the figure 4 illustrates a shutter means of the pole head.

Pour la fabrication d'un poteau métallique selon l'invention, on utilise une plaque métallique, par exemple coupée dans une bobine de tôle d'acier. La longueur L de cette plaque correspond à la hauteur du poteau augmentée de la longueur nécessaire pour réaliser les merlons du crénelage. Cette longueur L est généralement de 6 à 8 m. Dans le cas d'un poteau de section constante entre sa base et sa tête, la largeur 1 de la plaque est égale au périmètre du fût. Pour la fabrication d'un poteau dont la section diminue entre la base et la tête, ce qui est le mode de réalisation le plus courant, il est avantageux de prendre une plaque dont la largeur est égale à la somme du périmètre de la base et du périmètre de la tête et de découper la plaque dans le sens longitudinal en biais pour former deux trapèzes 2, 4 à partir de chacun desquels un poteau sera réalisé, comme représenté sur la figure 1. La base et la tête du trapèze ont dans ce cas généralement une longueur de l'ordre de 60 à 80 cm et de 20 à 30 cm, respectivement.For the manufacture of a metal pole according to the invention, a metal plate is used, for example cut in a sheet steel coil. The length L of this plate corresponds to the height of the post plus the length necessary to make the crenellations merlons. This length L is generally 6 to 8 m. In the case of a post of constant section between its base and its head, the width 1 of the plate is equal to the perimeter of the barrel. For the manufacture of a post whose section decreases between the base and the head, which is the most common embodiment, it is advantageous to take a plate whose width is equal to the sum of the perimeter of the base and the perimeter of the head and cut the plate longitudinally obliquely to form two trapezes 2, 4 from each of which a pole will be made, as represented on the figure 1 . In this case, the base and the head of the trapezium generally have a length of the order of 60 to 80 cm and 20 to 30 cm, respectively.

Selon l'invention, on découpe la tête de la plaque métallique pour former le crénelage. Cette découpe peut être réalisée par tout dispositif connu, et notamment par un dispositif thermique, tel que plasma ou laser, piloté par une commande numérique.According to the invention, the head of the metal plate is cut to form the aliasing. This cutting can be performed by any known device, and in particular by a thermal device, such as plasma or laser, controlled by a numerical control.

Dans le cas d'une plaque métallique découpée en deux trapèzes comme mentionné plus haut, la découpe des créneaux peut être effectuée avant la découpe des trapèzes ou après celle-ci.In the case of a metal plate cut in two trapezes as mentioned above, the slotting of the slots can be performed before cutting the trapezes or after it.

On a représenté sur la figure 2a un premier mode de réalisation du crénelage. Cette découpe correspond à un poteau octogonal.We have shown on the figure 2a a first embodiment of the aliasing. This cut corresponds to an octagonal post.

Elle comprend deux séries de merlons alternés, une première série comprenant des merlons 6 de longueur L1 et une deuxième série comprenant des merlons 8 de longueur L2 inférieure à L1.It comprises two series of alternating merlons, a first series comprising merlons 6 of length L1 and a second series comprising merlons 8 of length L2 less than L1 .

On comprend que la longueur des merlons, ou ce qui revient au même la profondeur des créneaux, est liée au périmètre de la tête après repliage, c'est-à-dire à la largeur L3 de la plaque. De manière préférée, les découpes (les créneaux) sont faites de sorte que, après repliage, les merlons ne laissent subsister que de faibles espaces entre eux, en particulier inférieurs à 12 mm, voire 8 mm, afin de ne pas risquer que des oiseaux s'introduisent dans le poteau.It is understood that the length of the merlons, or what amounts to the same depth of the slots, is related to the perimeter of the head after folding, that is to say the width L3 of the plate. Preferably, the cuts (crenellations) are made so that, after folding, the merlons leave only small gaps between them, in particular less than 12 mm, or even 8 mm, so as not to risk birds get into the pole.

Il est également envisageable de concevoir des merlons tels que ceux-ci se chevauchent après repliage. Toutefois, cette solution n'est actuellement pas préférée car les merlons sont alors repliés au moins en partie de manière séquentielle, alors qu'ils peuvent être repliés simultanément s'ils ne se chevauchent pas.It is also conceivable to design merlons such that they overlap after folding. However, this solution is currently not preferred because the merlons are then folded at least in part sequentially, while they can be folded simultaneously if they do not overlap.

L'étape suivante du procédé de fabrication consiste de manière classique à plier la plaque, en effectuant dans le cas d'un poteau octogonal sept plis longitudinaux au moyen d'une presse plieuse, pour réunir ses bords longitudinaux qui sont ensuite rendus solidaires, par exemple par soudage.The next step of the manufacturing process is conventionally to fold the plate, by performing in the case of an octagonal post seven longitudinal folds by means of a press brake, to join its longitudinal edges which are then secured, by example by welding.

Les merlons étant encore dans le prolongement du fût, un traitement de protection est appliqué au poteau, de manière classique, tel qu'un décapage suivi d'une galvanisation par immersion dans un bain de zinc en fusion. Il est avantageux d'effectuer ce traitement avant le repliage des merlons car cela permet une libre circulation des fluides.The merlons being still in the extension of the barrel, a protective treatment is applied to the post, in a conventional manner, such as etching followed by galvanization by immersion in a bath of molten zinc. It is advantageous to carry out this treatment before folding the merlons as this allows free circulation of the fluids.

La dernière étape du procédé de fabrication consiste à replier les merlons vers l'axe du fût pour obturer la tête. Ceci peut être réaliser de toute manière connue. A titre d'exemple, on peut utiliser une matrice 10 reproduisant en creux la forme de la tête du poteau fini, comme représenté sur la figure 4, et obtenir le formage de la tête par un déplacement relatif du poteau et de la matrice suivant l'axe du poteau.The last step of the manufacturing process is to fold the merlons to the axis of the barrel to close the head. This can be done in any known manner. By way of example, it is possible to use a matrix 10 reproducing in hollow form the head of the finished post, as shown in FIG. figure 4 , and obtain the forming of the head by a relative displacement of the post and the matrix along the axis of the post.

Avec une plaque présentant un crénelage tel que représenté sur la figure 2a, on obtient alors un poteau dont la tête a la forme représentée sur les figures 2b (vue de dessus) et 2c (vue de côté).With a plate having a aliasing as shown on the figure 2a , we then obtain a post whose head has the shape shown on the figures 2b (top view) and 2c (side view).

On comprend que la forme et le nombre des merlons et des créneaux peuvent être choisis librement, le critère essentiel étant qu'après repliage des merlons la tête de poteau ne comporte pas d'orifice important susceptible de provoquer l'introduction d'un oiseau dans le poteau.It is understood that the form and number of merlons and battlements can be chosen freely, the criterion essential is that after folding of the merlons the head of the post does not have a large orifice likely to cause the introduction of a bird in the post.

Ainsi, dans le cas d'un poteau polygonal, le nombre de merlons n'a pas à être choisi nécessairement égal au nombre de faces du polygone.Thus, in the case of a polygonal column, the number of merlons does not have to be chosen necessarily equal to the number of faces of the polygon.

A titre d'exemple, on a représenté sur la figure 3a un deuxième mode de réalisation du crénelage de la plaque métallique. Celle-ci ne comporte que quatre merlons 12 pour un fût octogonal. Chaque merlon 12 est en fait ici formé d'une première partie ayant la forme du merlon 6 de la figure 2a et d'une deuxième partie ayant la forme du merlon 8 de la figure 2a reliés par une arête 14 après plia.For example, there is shown on the figure 3a a second embodiment of the aliasing of the metal plate. It has only four merlons 12 for an octagonal drum. Each merlon 12 is in fact here formed of a first part having the shape of the merlon 6 of the figure 2a and a second part having the shape of the merlon 8 of the figure 2a connected by a ridge 14 after plia.

Après repliage des merlons, la tête de poteau présente une apparence pratiquement identique à celle du premier mode de réalisation, comme on peut le voir sur la figure 3b (vue de dessus) et sur la figure 3c (vue de côté).After folding the merlons, the post head has an appearance virtually identical to that of the first embodiment, as can be seen in the figure 3b (top view) and on the figure 3c (side view).

Claims (10)

  1. Metal pole including a pole body and a pole top which caps the body, characterised in that the pole body and cap are integral with one another, the cap being formed by merlons folded from a crenulated edge arranged in the pole top.
  2. Metal pole according to claim 1, characterised in that its straight section is polygonal.
  3. Metal pole according to claim 2, characterised in that it includes one merlon per face.
  4. Pole production method using a metal plate including a base, a top and two longitudinal edges, said method including the following steps:
    - cutting of the pole top in order to form a alternating crenulated edge of merlons and slots,
    - folding of the plate in order to bring together the longitudinal edges in such a way as to form a pole body,
    - folding back of the merlons towards the interior of the pole body in order to cap the pole top.
  5. Method according to claim 4, wherein the longitudinal edges are joined together via welding.
  6. Method according to one of claims 4 or 5, wherein the form and the number of merlons and slots are chosen in such a way that, after folding back, the pole top does not comprise any orifice of which the smallest dimension exceeds 8 mm.
  7. Method according to one of claims 4 to 6, wherein two different series of merlons are formed by cutting.
  8. Method according to claim 7, wherein the merlons of the two series have different longitudinal dimensions.
  9. Method according to one of claims 4 to 8, wherein the folding is carried out in such a way as to produce a pole body with a polygonal straight section.
  10. Method according to claim 9, wherein one merlon is formed per face of the polygonal pole body.
EP08845883A 2007-08-14 2008-08-12 Metal pole and production method therefor Active EP2188466B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0705846A FR2920028B1 (en) 2007-08-14 2007-08-14 METAL POST AND METHOD FOR MANUFACTURING A METAL POST
PCT/FR2008/001188 WO2009056706A2 (en) 2007-08-14 2008-08-12 Metal pole and production method therefor

Publications (2)

Publication Number Publication Date
EP2188466A2 EP2188466A2 (en) 2010-05-26
EP2188466B1 true EP2188466B1 (en) 2011-04-13

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EP08845883A Active EP2188466B1 (en) 2007-08-14 2008-08-12 Metal pole and production method therefor

Country Status (5)

Country Link
EP (1) EP2188466B1 (en)
AT (1) ATE505609T1 (en)
DE (1) DE602008006210D1 (en)
FR (1) FR2920028B1 (en)
WO (1) WO2009056706A2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH645153A5 (en) * 1979-04-06 1984-09-14 Voest Alpine Krems Metal mast provided with through-passages
FR2785933B1 (en) * 1998-11-18 2001-01-19 Eurofence SAFETY SHEET HAT FOR NOTCHED FENCE POST

Also Published As

Publication number Publication date
EP2188466A2 (en) 2010-05-26
FR2920028A1 (en) 2009-02-20
DE602008006210D1 (en) 2011-05-26
ATE505609T1 (en) 2011-04-15
WO2009056706A3 (en) 2009-07-02
WO2009056706A2 (en) 2009-05-07
FR2920028B1 (en) 2009-10-30

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