WO2000071317A1 - Procede de production de pieces tubulaires creuses, et pieces et ensemble obtenus selon ce procede - Google Patents

Procede de production de pieces tubulaires creuses, et pieces et ensemble obtenus selon ce procede Download PDF

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Publication number
WO2000071317A1
WO2000071317A1 PCT/PT1999/000010 PT9900010W WO0071317A1 WO 2000071317 A1 WO2000071317 A1 WO 2000071317A1 PT 9900010 W PT9900010 W PT 9900010W WO 0071317 A1 WO0071317 A1 WO 0071317A1
Authority
WO
WIPO (PCT)
Prior art keywords
mould
moulding
fibres
polygonal
cylindrical
Prior art date
Application number
PCT/PT1999/000010
Other languages
English (en)
Inventor
Alberto Tomás VIEIRA
Original Assignee
Vieira Alberto Tomas
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 Vieira Alberto Tomas filed Critical Vieira Alberto Tomas
Priority to BR9917094-9A priority Critical patent/BR9917094A/pt
Priority to PCT/PT1999/000010 priority patent/WO2000071317A1/fr
Publication of WO2000071317A1 publication Critical patent/WO2000071317A1/fr

Links

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
    • E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/36—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means applying fluid pressure or vacuum to the material
    • B28B21/38—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means applying fluid pressure or vacuum to the material introducing the material wholly or partly under pressure ; Injection-moulding machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • 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

Definitions

  • the present invention relates to a new process of producing hollow, tubular parts with cylindrical, polygonal, truncated cone or other suitable shape by moulding, as well as to the parts thus obtained and to the obtained assemblies by coupling the referred parts.
  • the parts according to the present invention are applicable in the field of telecommunications, where they are used in the construction of antennae support towers with a height up to 50 meters and with variable cross-sections.
  • the parts obtained according to the present invention are applicable, in general, in the electrical power distribution network, in particular in the construction of low, medium and high tension cable support networks and as towers for public lighting.
  • antennae support towers are produced in concrete, either reinforced or prestressed concrete, or in steel, in trestlework or tubular shape.
  • the raw materials used - concrete or steel - lead to very high and penalising costs and consequently the telecommunication operators have tried to overcome this enormous disadvantage.
  • the present invention has as an object a process of production of hollow tubular parts, with cylindrical, polygonal, truncated cone or other suitable shape by moulding, as well as to said parts.
  • This process of production by injection moulding allows the execution of parts with thin walls, with reduced thickness from 15 to 40 mm, with a high degree of precision and homogeneity, guarantying its final quality.
  • the hollow tubular parts thus produced can be used isolated or conjugating several parts by coupling them together.
  • the assembling method of the parts comprises the following operations:
  • Figure 1 is an upright view of a part (1 ) according to the present invention.
  • Figure 2 is a cross-section of part (1 ) shown in figure 1.
  • Figure 3 is a perspective sectional view of the wall of part (1 ) shown in figure 1.
  • Figure 4 is a longitudinal horizontal cross-section view of the internal mould (2) according to the present invention.
  • Figure 5 is a longitudinal horizontal cross-section view of the external mould (3) according to the present invention.
  • Figure 6 is a top elevational view of the mould towards the insertion of the internal mould (2) into the external mould (3) during phase I of moulding of part (1 ) according to the present invention.
  • Figure 7 is a longitudinal horizontal cross-section view of the moulding unit (4) at phase I of moulding of part (1 ) according to the present invention with the hydraulic elements (15) in deactivated state.
  • Figure 8 is a longitudinal vertical cross-section view of the moulding unit (4) at phase I of moulding of part (1) according to the present invention with the hydraulic elements (15) in deactivated state.
  • Figure 9 represents the equipment line used in the injection for production of part (1 ), according to the present invention.
  • Figure 10 is a top elevational view of the mould towards the removal of the internal mould (2) during phase II of de-moulding of part (1 ), according to the present Invention.
  • Figure 11 is a longitudinal horizontal cross-section view of the moulding unit (4) at phase II of de-moulding of part (1 ) according to the present invention with the hydraulic elements (15) activated.
  • Figure 12 is a longitudinal vertical cross-section view of the moulding unit (4) at phase II of de-moulding of part (1 ) according to the present invention with the hydraulic elements (15) activated.
  • Figure 13 is a longitudinal horizontal cross-section view of the internal mould (2) at phase II of de-moulding of part (1 ) according to the present invention for the removal of the internal mould (2).
  • Figure 14 represents a main elevational upright view of the tower (14) with the various parts (1 ) already assembled according to the present invention.
  • Figure 15 is a vertical cross-section view amplified by line /A from the top of the upper part of the tower (14) represented in Figure 14.
  • Figure 16 represents a transversal cross-section view amplified by line /A of the top of the upper part of the tower (14) represented in Figure 14.
  • Figure 17 represents a vertical cross-section amplified by line /B of the tower (14) represented in Figure 14.
  • Figure 18 represents a transversal cross-section amplified by line /B of the tower (14) represented in Figure 14.
  • Figure 19 represents a vertical cross-section amplified by line /C of the tower (14) represented in Figure 14.
  • Figure 20 represents a transversal section amplified by line /C of the tower (14) represented in Figure 14.
  • the moulds for carrying out the process according to the present invention had been designed comprising two pieces: a movable internal mould (2), as represented in figure 4 and a stanch and detachable external jacket (3), as represented in figure 5, forming both moulds a unit (4), shown for example in figures 11 and 12, constituting a sufficiently rigid assembly to stand the injection pressures of the cement paste matrix.
  • a first phase I the moulding by injection is carried out, and in a second phase II is carried out the de-moulding operation.
  • a net type structure (5) in stainless steel, glass or in any other suitable material is thereto placed. Over this structure (5) will be laid the carbon fibre cables (6) with a length up to 13 meters, longitudinally placed to the axle of the part (1 ) in its entire perimeter with suitable distance in between.
  • This set (net-type structure (5) and carbon fibre cables (6)) is positioned in a suitable manner halfway the thickness of the part walls, as can been seen from figure 3, on the surface of the internal mould (2).
  • the internal mould (2) thus prepared is introduced in the external mould (3) being its positioning thoroughly determined and adjusted (figures 6, 7 and 8), in order to allow the subsequent injection operation, the hydraulic elements (15) which are foreseen to remove the internal mould (2) being de-activated.
  • the strictness of the construction either of the external mould (3) or of the internal (2) one, will allow a thoroughly positioning that it has great importance for the final result of the part.
  • the injection is performed using a device as the one represented in figure
  • the moulds may be placed either in a horizontal or in an inclined position, in conformity with the association of the injection methods - so that the required exhaustion of the gas and/or air existing in the walls carried out in a suitable manner so as to guarantee the product quality.
  • the coupling of parts (1 ), represented in figure (1 ), can be done.
  • the coupling of several parts (1 ) is carried out, in this case using three parts (1 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé permettant de produire des pièces tubulaires creuses par moulage, ces pièces présentant une forme cylindrique, polygonale, ou tronconique, ou toute autre forme appropriée. Ces pièces sont fabriquées à partir d'une matrice de pâte de ciment contenant des fibres du type «GRC», renforcées aux fibres de carbone ou similaires. Ce procédé consiste tout d'abord à placer sur un moule intérieur (2) une structure mobile (5) du type treillis à base d'acier inoxydable, de verre, ou d'un matériau identique, puis à disposer des câbles (6) en fibres de carbone au-dessus de cette structure (5). Ce procédé consiste ensuite à insérer le moule intérieur (2) dans le moule extérieur (3), puis à définir et à ajuster sa position avec précision. Ce procédé consiste par ailleurs à injecter la matrice de pâte de ciment, du type GRC, à laquelle sont ajoutés des polymères ainsi que des fibres de verre alcalino-résistantes, du carbone, ou de l'acier inoxydable, uniformément répartis sur ladite structure (5) du type treillis et les câbles (6) en fibres de carbone. Ce procédé consiste enfin à démouler une pièce tubulaire (1), le moule intérieur (2) étant retiré de l'unité de moulage (4) à l'aide d'éléments hydrauliques (15) et le moule intérieur (2) étant enlevé, ce qui permet de libérer la pièce finie (1).
PCT/PT1999/000010 1999-05-21 1999-05-21 Procede de production de pieces tubulaires creuses, et pieces et ensemble obtenus selon ce procede WO2000071317A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR9917094-9A BR9917094A (pt) 1999-05-21 1999-05-21 Processo de produção de peças tubulares ocas,peças e conjuntos obtidos a partir da produção
PCT/PT1999/000010 WO2000071317A1 (fr) 1999-05-21 1999-05-21 Procede de production de pieces tubulaires creuses, et pieces et ensemble obtenus selon ce procede

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/PT1999/000010 WO2000071317A1 (fr) 1999-05-21 1999-05-21 Procede de production de pieces tubulaires creuses, et pieces et ensemble obtenus selon ce procede

Publications (1)

Publication Number Publication Date
WO2000071317A1 true WO2000071317A1 (fr) 2000-11-30

Family

ID=20085023

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT1999/000010 WO2000071317A1 (fr) 1999-05-21 1999-05-21 Procede de production de pieces tubulaires creuses, et pieces et ensemble obtenus selon ce procede

Country Status (1)

Country Link
WO (1) WO2000071317A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013135292A1 (fr) * 2012-03-15 2013-09-19 Simex Group Ag Mât
CN103774905A (zh) * 2014-02-21 2014-05-07 董旭恒 一种电杆新型生产工艺
WO2014053688A3 (fr) * 2012-10-01 2014-09-25 Gestamp Hybrid Towers, S.L. Structure de support pour aérogénérateurs et moule permettant d'obtenir de telles structures
CN104110155A (zh) * 2014-07-25 2014-10-22 邵卫国 一种薄壁钢管杆塔及其加工与施工方法
CN106121918A (zh) * 2016-08-05 2016-11-16 国网山东省电力公司龙口市供电公司 一种风塔发电装置
CN106762445A (zh) * 2017-01-06 2017-05-31 佛山科学技术学院 一种不锈钢钢筋混凝土海上风电机组塔筒结构
CN109854065A (zh) * 2019-03-22 2019-06-07 云南省楚雄恒基管道工业有限责任公司 一种环形混凝土电杆生产工艺
CN111894331A (zh) * 2020-08-13 2020-11-06 江苏奇一科技有限公司 一种热塑复合材料杆塔及其制备方法
CN112160639A (zh) * 2020-09-25 2021-01-01 长沙金湘水泥制品有限公司 一种电线杆及其生产工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1492642A (en) * 1921-03-01 1924-05-06 Lake Simon Method of and apparatus for forming concrete structures
GB1220763A (en) * 1969-07-16 1971-01-27 Albert Norman Brown P.v.c. infilled fencing posts
FR2519287A1 (fr) * 1982-01-07 1983-07-08 Foseco Trading Ag Procede de fabrication de tubes refractaires
WO1986002875A1 (fr) * 1984-11-08 1986-05-22 A-Betong Ab Procede et moule pour coulage d'objets en beton
AU568376B2 (en) * 1983-05-16 1987-12-24 Rocla Pty Limited Fastening and stressing concrete post segments
GB2227036A (en) * 1989-01-11 1990-07-18 Tecnipost Sa Concrete posts

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1492642A (en) * 1921-03-01 1924-05-06 Lake Simon Method of and apparatus for forming concrete structures
GB1220763A (en) * 1969-07-16 1971-01-27 Albert Norman Brown P.v.c. infilled fencing posts
FR2519287A1 (fr) * 1982-01-07 1983-07-08 Foseco Trading Ag Procede de fabrication de tubes refractaires
AU568376B2 (en) * 1983-05-16 1987-12-24 Rocla Pty Limited Fastening and stressing concrete post segments
WO1986002875A1 (fr) * 1984-11-08 1986-05-22 A-Betong Ab Procede et moule pour coulage d'objets en beton
GB2227036A (en) * 1989-01-11 1990-07-18 Tecnipost Sa Concrete posts

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013135292A1 (fr) * 2012-03-15 2013-09-19 Simex Group Ag Mât
WO2014053688A3 (fr) * 2012-10-01 2014-09-25 Gestamp Hybrid Towers, S.L. Structure de support pour aérogénérateurs et moule permettant d'obtenir de telles structures
US9234364B2 (en) 2012-10-01 2016-01-12 Gestamp Hybrid Towers, S.L. Support structure for wind-driven power generators and mold for obtaining such structures
CN103774905B (zh) * 2014-02-21 2016-06-01 董旭恒 一种电杆的生产工艺
CN103774905A (zh) * 2014-02-21 2014-05-07 董旭恒 一种电杆新型生产工艺
CN104110155A (zh) * 2014-07-25 2014-10-22 邵卫国 一种薄壁钢管杆塔及其加工与施工方法
CN104110155B (zh) * 2014-07-25 2016-02-10 邵卫国 一种薄壁钢管杆塔及其加工与施工方法
CN106121918A (zh) * 2016-08-05 2016-11-16 国网山东省电力公司龙口市供电公司 一种风塔发电装置
CN106121918B (zh) * 2016-08-05 2019-04-02 国网山东省电力公司龙口市供电公司 一种风塔发电装置
CN106762445A (zh) * 2017-01-06 2017-05-31 佛山科学技术学院 一种不锈钢钢筋混凝土海上风电机组塔筒结构
CN109854065A (zh) * 2019-03-22 2019-06-07 云南省楚雄恒基管道工业有限责任公司 一种环形混凝土电杆生产工艺
CN111894331A (zh) * 2020-08-13 2020-11-06 江苏奇一科技有限公司 一种热塑复合材料杆塔及其制备方法
CN111894331B (zh) * 2020-08-13 2021-06-15 江苏奇一科技有限公司 一种热塑复合材料杆塔的制备方法
CN112160639A (zh) * 2020-09-25 2021-01-01 长沙金湘水泥制品有限公司 一种电线杆及其生产工艺

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