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EP3253936B1 - Poteaux en matière plastique renforcée de fibres modulaires - Google Patents

Poteaux en matière plastique renforcée de fibres modulaires Download PDF

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Publication number
EP3253936B1
EP3253936B1 EP16712441.1A EP16712441A EP3253936B1 EP 3253936 B1 EP3253936 B1 EP 3253936B1 EP 16712441 A EP16712441 A EP 16712441A EP 3253936 B1 EP3253936 B1 EP 3253936B1
Authority
EP
European Patent Office
Prior art keywords
poles
pole
section
cap
fiber reinforced
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.)
Active
Application number
EP16712441.1A
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German (de)
English (en)
Other versions
EP3253936A1 (fr
Inventor
Panagiotis CHRONIS
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.)
Composite Technologies Ltd
Original Assignee
Composite Technologies Ltd
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 Composite Technologies Ltd filed Critical Composite Technologies Ltd
Publication of EP3253936A1 publication Critical patent/EP3253936A1/fr
Application granted granted Critical
Publication of EP3253936B1 publication Critical patent/EP3253936B1/fr
Active legal-status Critical Current
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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
    • 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
    • E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
    • E04H12/182—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic telescopic

Definitions

  • the invention relates to poles made from reinforced polymers (Fiber Reinforced Plastics - FRP), the production process of poles and the use of poles as a modular product.
  • reinforced polymers Fiber Reinforced Plastics - FRP
  • Reinforced polymers belong to the class of composites, and consist of polymers and reinforcing glass fibers or other materials (aramid, carbon, etc.) in various forms (yarns, matts, felts, fabrics, meshes).
  • the poles are widely used for overhead power distribution lines, for the support of transmission lines in telecommunications and for various public and private uses (lighting, road signs, camera support, flag poles, etc.).
  • Wooden poles have considerable disadvantages due to the nature of wood (natural product), such as being attacked by insects, microorganisms and the weather conditions. Therefore, they require impregnation with dangerous pesticides, the use of which is subject to restrictions (e.g. creosote - DIRECTIVES 98/8/EC, 2011/71/EU). Wooden poles can also spread the fire, and when used in power distribution significant current leakages to the ground occur and reduce the network efficiency. Finally it is a non-industrial product with seasonal production which is not always predictable, with negative consequences on the availability (need to keep large stocks) and the price.
  • WO00/36261 A1 presenting poles capable of supporting overhead electrical or telephone lines, lighting equipment or others from reinforced plastic
  • the poles consist of portions with dimensions that one end of a portion can be inserted into the end of an adjacent portion.
  • One of the major issues raised in the above mentioned case is that the hollow parts have to be of the same shape in order to fit with each other.
  • the poles are not constructed entirely of fiber reinforced plastic, which creates the need to maintain the poles and raises the relevant cost.
  • the present invention relates to poles made of FRP, which consist of individual parts of suitable shape so that:
  • the poles of the invention consist of two or more (depending on the total height and the desired strength) hollow (hollow) parts (tubes) of constant cross-section (cylindrical, polygonal, oval, etc.) which are connected by respective annular joints (connectors) with circumferential grooves on each side.
  • the hollow parts of constant cross sections are shaped to serve the operational needs of customers in an optimal way (e.g. cross section with grooves for the easy Installation of the cable support fittings, cross section with stiffening ribs, cross section with a channel for cables crossing etc.). They also have appropriate wall thickness to meet customer requirements in terms of the mechanical strength and rigidity of the poles.
  • Each annular joint connects two successive hollow cross sections (tubes) and is shaped so that the one side fits to the upper section and the other side fits to the lower section.
  • the upper side of the joint has a circumferential groove into which the upper section is inserted snugly and ends.
  • the lower side of the joint has a circumferential groove into which the lower section is inserted snugly and ends.
  • Adhesive is applied for the welding of the joints with the hollow sections, which may be combined with mechanical restraint (e.g. screws, pins, cotter pins, rivets etc.), which is either permanent or temporary (until the adhesive is polymerized) and removable.
  • mechanical restraint e.g. screws, pins, cotter pins, rivets etc.
  • the application of the adhesive can be performed by simply spreading into each groove of the joint before placing the respective tube (hollow part) in it. It can also be performed by Injecting through a special applicator, either In the groove of the joint before placing the respective hollow part (as mentioned above), or after the placement of the respective hollow part (tube) in the groove of the joint through an appropriately shaped hole, which leads the adhesive into the gap, In order to achieve the welding.
  • the poles of the invention also have a cap, which fits on the last upper section and is placed on top of the poles ensuring water tightness,
  • the cap has a circumferential groove at its lower side into which the last upper section of the pole is Inserted snugly and ends.
  • the poles of the Invention may include additional components (rings, inserts, etc.) and configurations (holes, channels, etc.) according to the user's needs.
  • additional components rings, inserts, etc.
  • configurations holes, channels, etc.
  • the opening of transverse through-holes to the poles in which internal (reinforcing and guiding) tubes are applied and adhered. These holes are used for passing components, screws and cables (for example, near the top of the pole) or/and for mounting removable steps at regular intervals, allowing technicians to climb and stand in order to perform tasks.
  • the production method of the poles of the invention has two production steps of the aforementioned individual parts, and an assembly step.
  • the first two steps which are independent of each other and can be executed in parallel, require specialized industrial equipment, personnel and facilities.
  • the assembly step is designed so that it doesn't require specialized personnel or facilities.
  • the constant cross section hollow parts (tubes) of the poles of the invention can be produced by various reinforced polymer production methods (resin transfer molding, contact molding, filament winding, etc.), but are preferably produced by the pultrusion method, which Is an industrial, automated, large capacity and competitive method and gives products of reproducible quality and dimensional accuracy.
  • the annular joints and the cap can also be produced by various reinforced polymer production methods (casting, resin transfer molding, etc.), but are preferably produced by the compression molding method, which also has the same - as abovementioned - characteristics, i.e. Industrial, automated, large capacity, competitive, reproducible and accurate In terms of the dimensions of the produced products.
  • poles of the invention as a modular product is feasible, because the step of the poles assembly provided by their production method is not demanding in terms of expertise, equipment, facilities, utilities, etc., and can therefore be performed by the end user of the poles, with manuals and materials which are delivered together with the poles, even at the site of the final installation of the poles.
  • the poles of the Invention are delivered either fully assembled and ready for installation, i.e. as the existing common poles are delivered, or as a modular product, i.e, divided In its Individual parts.
  • the design of the poles of the invention allows their packaging to be used as a modular product in such a way so that the volume required during their transport is submultiple of the volume of the assembled pole. This is done by placing the pieces of smaller cross section (with the corresponding joints) in the pieces of the next larger cross section etc..
  • the poles of the invention are suitable for each and every use (power distribution, telecommunications, lighting, etc.).
  • poles of other cross sections is not excluded (e.g. polygonal, oval, with functional recesses and channels, with stiffening ribs, etc.), representative designs (figures) of which have also been added.
  • the poles consist of successive parts of constant cross-section of different shape (e.g. cylindrical parts at the base for the even distribution of mechanical stresses and polygonal at the top for the easier mounting of the arms and the support parts of the cables). This is achieved by appropriately adjusting the shape of the respective joints, in order to fit to the different (upper and lower) sections.
  • Figure 1 shows (In perspective view and in side view) an example of a pole which does not fall under the scope of the appended claims, which consists of three successive cylindrical parts, which are connected with joints.
  • the upper cylinder has a cap.
  • Figures 3, 4 and 5 show in greater detail (in perspective view, top view, side view and sectional view) three individual parts of the pole with constant cylindrical section.
  • the size of the cross section of the lower part is larger, of the middle part intermediate and of the upper part smaller. All the parts with constant cross section may be produced by the pultrusion method,
  • FIGS 6 and 7 show in greater detail (similarly) the joints that connect the successive cylindrical sections in pairs. This means that the lower joint, which Is larger one, connects the lower cylindrical part of the pole with the Intermediate, and the upper joint, which is smaller one, connects the intermediate cylindrical part of the pole with the upper.
  • Each joint is designed so as to "receive" at appropriately shaped circumferential grooves (recesses) the two cylindrical sections (upper and lower) which it connects, in order firstly to achieve the strong adhesion between the joint and the sections with adhesive, and secondly the assembling of the section to be performed accurately (the sections "end” in the grooves (recesses) of the Joint, without the need for measuring, leveling, etc.). All the joints can be produced by the compression molding method. The design of the joints ensures that the successive sections overlap at a small part of their length, so that the connection Is resistant against bending.
  • Figure 8 shows in greater detail (similarly) the cap, which fits with the upper cylindrical part and Is placed on top of the pole of the invention.
  • the connection of the cap to the cylindrical part the welding, Its assembly and production (compression molding), exactly the same apply as mentioned above for the joints.
  • the design of the cap ensures tightness, regardless of good or bad application of the adhesive.
  • the top of the cap is slightly curved; however caps with flat, conical or of any other shape surface are not excluded, depending on the requirements of the use.
  • Figure 9 shows (in perspective view and sectional view) a pole which does not fall under the scope of the appended claims, which has two transverse through holes at a short distance from its top for passing components, screws and cables and at a lower height five transverse through holes (in vertical direction comparing to the previous) for placing removable steps (stiles).
  • Fitted, strong, inner tubes are welded at all the holes, which : a. strengthen the pole and prevent its shattering in case threaded fittings, through-bolts, etc., must be tightened, b. direct the passing of rods, cables, ropes etc., and c. prevent the communication of the holes with the inside of the pole, the entry of water, insects, etc.,
  • Figure 10 shows the assembly process of the pole in successive steps. All the steps of the assembly can take place either at the factory (before the delivery of the pole as a finished product) or on-site at the installation location (after the delivery of the pole as a modular product).
  • the joints and the cap are welded to the corresponding lower cylindrical sections, by applying an adhesive (K).
  • the application of the adhesive can be made in all possible ways (spreading, infusion, injection, etc.), depending on the viscosity of the adhesive and the specific design of the joints and the sections. Similarly the type of adhesive application equipment vary (spatula, pressing machine with static mixer, etc.). The welding can also be combined with mechanical restrain, either permanent or temporary, until the completion of the polymerization (hardening) of the adhesive.
  • the first step of the assembly (A) preferably takes place at the factory (before delivery) even when the pole is delivered as a modular product. This is partly because, after the first step, the individual parts of the pole may still be placed inside one another (in order to be transported easily and inexpensively), and also because by performing the first step at the factory the labor that must be done on-site and the corresponding installation time of the pole are reduced.
  • the Joints are welded to the corresponding upper cylindrical sections, by applying an adhesive (K), In this way the Individual assemblies resulted from the first step are joined to form the final pole (C). Regarding the application of the adhesive and mechanical restraint exactly the same are applied as mentioned for the first step.
  • the second step is always performed on-site.
  • Figure 11 is a schematic representation of of adhesive application by injection in the gaps between the joints and the cylindrical sections, by using the pressing device.
  • the assembly process consists of: a the mounting of the cylindrical parts at their place, which may be combined with a permanent or temporary mechanical fixing (e.g. with pins), and b. the application of the adhesive by the applicator through holes that lead the material to fill the gaps in order to achieve the welding. If the adhesive has two components, the mixing occurs in a static mixer of the applicator, to avoid mistakes.
  • Figures 12, 13 and 14 show the individual parts of another version of the pole which does not fall under the scope of the appended claims, which pole is of octagonal cross-section.
  • the pole of this version consists of successive sections of constant octagonal cross-section, the corresponding joints that fit to the octagons and the cap similarly.
  • Figure 12 shows (in perspective view, top view, side view and sectional view) a part with an octagonal shaped constant cross-section
  • Figure 13 shows (similarly) an octagonal shaped joint
  • Figure 14 shows (similarly) the corresponding cap.
  • Figure 15 shows the corresponding assembly steps of the octagonal pole which are not substantially different from those of the corresponding cylindrical described above.
  • Figure 16 shows (in perspective view) a pole which does not fall under the scope of the appended claims, with an oval cross section.
  • the joints are designed to fit to the oval cross-sections, to ensure the required overlap and to connect strongly.
  • the image 16a shows two successive oval cross sections connected to a joint and image 16b shows an oval cross-section.
  • Figure 17 shows (in perspective view) a pole which does not fall under the scope of the appended claims, with a composite cross section, which is cylindrical, but also forms an internal channel which facilitates the passing and protection of the cables.
  • image 17a shows two successive sections with a channel connected to the joint and image 17c shows the same components (two cross sections and a joint) before the assembly.
  • image. 17b shows a cross section with a channel separately and Image 17e shows a joint separately.
  • Figure 18 shows (in perspective view) a pole which does not fall under the scope of the appended claims, with a composite cross section, which is cylindrical, but also forms grooves for fixing channels, fittings, branch boxes, cables, etc.. Regarding the joints exactly the same are applied as mentioned above. Images 18a and 18e show two successive sections with grooves, connected with a joint. Image 18b shows a cross-section separately and images 18c and 18d show each joint separately.
  • Figure 19 shows (in perspective view) a pole of the invention which consists of successive sections of constant cross-section of different shape. Specifically, the bottom section is cylindrical, while the upper section is octagonal. Images 19a and 19b show two successive sections (cylindrical at the bottom and octagonal at the top) connected to the joint, and image 19c shows the same components (two cross sections and a joint) before the assembly.
  • the joint (image 19d, separately) that connects the two different sections, is designed so as to fit to both sections, having a circular groove at Its bottom side and an octagonal groove at its top.
  • Figure 20 shows the individual parts of the pole, i.e. the cylindrical parts that have been produced by the pultrusion method and the joints and the cap that have been produced by the compression molding method, and the first assembly step of these pieces is described In pairs (see explanation of figure 10 - step A, as mentioned above), which takes place at the factory.
  • Images 20a and 20b show the pieces (three sections, two joints and cap) separately from one another.
  • Images 20c and 20d show the pieces glued in pairs (lower cylinder + lower joint, intermediate cylinder + upper joint, upper cylinder + cap) as obtained after the step A of the assembly at the factory.
  • Images 20e and 20f show the same abovementioned pairs but In reverse order (with no other change), that can be placed one Inside the other.
  • Figure 21 shows the placing of partially assembled pieces (pairs) telescopically one inside the other.
  • the packaging is done in the factory before shipment, so as to reduce the length and the volume occupied by the modular pole, to facilitate its transportation and to be possible even by a smaller vehicle.
  • Images 21a, 21c and 21e show (in side and perspective view) the pairs as they are inserted into each other and images 21b, 21d and 21f (similarly) show the pairs completely packaged in the smallest possible dimension.
  • Figure 22 shows (in side and perspective view) the first step of Installation of the modular pole, after its transportation on-site.
  • the lower cylindrical section which has the first joint already welded at its top, is placed, leveled and anchored to the hole where the pole will be placed.
  • Figure 23 shows (in side and perspective view) the application of the adhesive (K) to the joint of the first compacted part of the pole, which will be used for the welding of the next cylindrical section.
  • Figure 24 shows (In side and perspective view) the placing of the second cylindrical part of the pole at the corresponding socket of the first joint, wherein the adhesive (K) has already been applied.
  • Figure 25 shows (in side and perspective view) the application of the adhesive (K) at the joint of the second, already placed, part of the pole, which will be used for the welding of the last, upper, cylindrical part that also bears the cap.
  • Figure 27 is a schematic representation of the production method of the poles of the invention as a flow chart, which includes the production of the individual pole parts by the compression molding (C) and pultrusion (P) methods, which can take place in parallel and Independently from one another, and then the assembly of the individual parts of the pole with adhesive (K) or/and mechanical means, which may be done either at the factory or later by the user (in case the poles are used as a modular product).
  • C compression molding
  • P pultrusion
  • figure 28 an example of a pole ready to be produced industrially is shown with all its dimensions.
  • the pole of the example is 7m long and meets the requirements of the specifications relating to poles of respective size suitable for Installation in networks. It also meets the requirements of relevant international standards (EN 50341, EN 50423).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (4)

  1. Poteaux en plastique modulaires renforcés de fibres, constitués de deux ou plusieurs parties creuses successives de section constante, lesdites parties creuses successives ayant des tailles différentes, lesdits poteaux étant en outre constitués de joints annulaires de forme correspondant à la forme des parties creuses qu'ils relient, avec des rainures circonférentielles sur leurs deux côtés adaptées pour le montage des parties creuses qu'elles relient, au moyen desquelles chaque partie creuse est ajustée avec l'autre via les joints annulaires, caractérisés en ce que:
    lesdites parties creuses successives ont des formes différentes, et
    lesdits poteaux en plastique renforcés de fibres modulaires sont en outre constitués d'un capuchon de forme correspondant à la forme de la partie creuse supérieure, moyennant quoi le capuchon est ajusté sur le dessus de la partie creuse supérieure du poteau.
  2. Poteaux plastiques modulaires renforcés de fibres, selon la revendication 1, caractérisés en ce que les parties creuses de section constante sont cylindriques, polygonales ou ovales.
  3. Poteaux plastiques modulaires renforcés de fibres, selon la revendication 1, caractérisés en ce que des tubes intérieurs sont passés transversalement à travers des trous dans les parties creuses et soudés, pour le passage de composants, vis, câbles et pour la fixation de marches amovibles.
  4. Procédé de fabrication de poteaux en plastique modulaires renforcés de fibres, selon la revendication 1, constitués de deux ou plusieurs parties creuses successives de section constante, de joints annulaires de forme correspondante avec des rainures circonférentielles de part et d'autre adaptées pour le montage des sections qu'elles relient, et d'un capuchon de forme correspondante, caractérisée en ce que les parties creuses de section transversale constante sont réalisées par le procédé de pultrusion et les joints annulaires et le capuchon sont réalisés par le procédé de moulage par compression.
EP16712441.1A 2015-02-04 2016-02-02 Poteaux en matière plastique renforcée de fibres modulaires Active EP3253936B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GR20150100040A GR1008702B (el) 2015-02-04 2015-02-04 Συναρμολογουμενοι στυλοι απο ενισχυμενο πλαστικο
PCT/GR2016/000003 WO2016124953A1 (fr) 2015-02-04 2016-02-02 Poteaux en matière plastique renforcée de fibres modulaires

Publications (2)

Publication Number Publication Date
EP3253936A1 EP3253936A1 (fr) 2017-12-13
EP3253936B1 true EP3253936B1 (fr) 2020-08-12

Family

ID=55640770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16712441.1A Active EP3253936B1 (fr) 2015-02-04 2016-02-02 Poteaux en matière plastique renforcée de fibres modulaires

Country Status (5)

Country Link
US (1) US20180016807A1 (fr)
EP (1) EP3253936B1 (fr)
CN (1) CN107667201A (fr)
GR (1) GR1008702B (fr)
WO (1) WO2016124953A1 (fr)

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US20190119938A1 (en) * 2017-10-23 2019-04-25 Composipole Inc. Lightweight eco-conscious composite utility pole
US11001682B2 (en) 2018-11-02 2021-05-11 Composipole, Inc. Lightweight fire resistant composite utility pole, cross arm and brace structures
US12227915B2 (en) 2022-06-29 2025-02-18 Infracom Inc. System and method for improved screw pile base
WO2024006427A1 (fr) 2022-06-29 2024-01-04 Dominguez Eddy E Système et procédé de construction de poteau en fibres de carbone
CN116201290A (zh) * 2022-12-13 2023-06-02 湖北工程学院 一种槽型frp型材混凝土梁结构

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IT244690Y1 (it) * 1998-12-11 2002-03-12 Mauro Orlandi Un palo atto a sostenere linee elettriche o telefoniche aeree,apparati di illuminazione od altro
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Also Published As

Publication number Publication date
WO2016124953A1 (fr) 2016-08-11
CN107667201A (zh) 2018-02-06
GR1008702B (el) 2016-03-08
US20180016807A1 (en) 2018-01-18
EP3253936A1 (fr) 2017-12-13

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