EP0012675A1 - Einrichtung zum Giessen von Betongegenständen - Google Patents

Einrichtung zum Giessen von Betongegenständen Download PDF

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Publication number
EP0012675A1
EP0012675A1 EP19790400978 EP79400978A EP0012675A1 EP 0012675 A1 EP0012675 A1 EP 0012675A1 EP 19790400978 EP19790400978 EP 19790400978 EP 79400978 A EP79400978 A EP 79400978A EP 0012675 A1 EP0012675 A1 EP 0012675A1
Authority
EP
European Patent Office
Prior art keywords
mold
concrete
vibrating
installation
molding
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.)
Granted
Application number
EP19790400978
Other languages
English (en)
French (fr)
Other versions
EP0012675B1 (de
Inventor
Michel Gravier
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.)
TUYAUX BONNA Ste
Original Assignee
TUYAUX BONNA Ste
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 TUYAUX BONNA Ste filed Critical TUYAUX BONNA Ste
Publication of EP0012675A1 publication Critical patent/EP0012675A1/de
Application granted granted Critical
Publication of EP0012675B1 publication Critical patent/EP0012675B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B28B21/14—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means vibrating, e.g. the surface of the material
    • B28B21/16—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means vibrating, e.g. the surface of the material one or more mould elements

Definitions

  • the present invention relates to a method and an installation for molding concrete products.
  • the invention relates more particularly to the molding of concrete pipes.
  • the vibration phase of concrete makes it possible not only to facilitate the placement of dry concrete inside the molds, but also and above all to improve the compactness of the molded concrete, in particular by expelling the air included therein.
  • the vibration phase is therefore an essential phase in the product molding operation. Its speed depends on the productivity of the entire production line and its efficiency depends on the quality of the products obtained.
  • the vibration of the concrete is obtained either internally using needle actuators embedded in the concrete, or externally using vibrating tables used essentially for small dimensions, or using external vibrators fixed on the mold wall and producing vibrations by means of eccentric rotating weights.
  • the action in depth in the concrete of these vibrators is generally quite limited.
  • At least one of the two amplitude and frequency parameters of the vibration is not adjustable, which leads to lengthening the time of the vibration operation to obtain an acceptable quality of the product, this being particularly sensitive with the external vibrators vibrating in an anarchic manner and generating quite different vibrations at various points of the molds.
  • the vibrators currently used are very noisy and make working conditions particularly difficult.
  • the invention therefore essentially aims to provide a method and an installation for molding vibrated concrete products which allow to standardize the vibrations at all points of the mass of the concrete, this standardization of the vibrations leading to a better compactness and greater homogeneity of the molded products.
  • the solution proposed according to invention consists in shaking the mold and the concrete which it contains so that by shaking the assembly, all the points of the mold are animated by the same movement simultaneously and consequently subjected to unidirectional vibrations and perfectly identical in all concrete mass points.
  • the method of molding concrete products such as pipes consists essentially of filling a mold with concrete corresponding to the product to be molded and of agitating in a block the assembly constituted by the mold and the concrete which it contains.
  • the stirring operation is started during the filling of the mold.
  • the molding installation for implementing the method comprises, in known manner a concrete mold and means for vibrating the concrete, said installation further comprising a reaction mass and supports on which the mold rests freely, the means for vibrating the concrete being vibrating hydraulic cylinders which are interposed between the reaction mass and the mold against which they rest.
  • the supports on which the mold rests freely can be constituted by suspension means attached to a lifting device or even horizontal cradles resting on the ground.
  • the installation shown is an installation for molding cylindrical concrete pipes.
  • This installation comprises a cylindrical mold 1 suspended vertically by means of tie rods 2 from a support 3 attached to a conventional lifting device such as a traveling crane or a crane not shown.
  • the installation further comprises a reaction mass 4, for example of reinforced concrete, supporting at its upper part a mobile carriage 5 carrying an arm 6 which extends above the mold 1 and carries at its end a cover. closure 7 which covers the upper part of the mold and serves to introduce the concrete into the latter via a supply duct 8 also carried by the arm 6.
  • a reaction mass 4 for example of reinforced concrete, supporting at its upper part a mobile carriage 5 carrying an arm 6 which extends above the mold 1 and carries at its end a cover. closure 7 which covers the upper part of the mold and serves to introduce the concrete into the latter via a supply duct 8 also carried by the arm 6.
  • Gussets 9 and 10 are attached to the lower part and to the upper part of the outer cylindrical casing of the mold 1, intended to allow the attachment, by means of quick couplers, 11 and 12, respectively.
  • cylinders 13 and 14 whose bodies are supported and are fixed to the reaction mass 4.
  • the jacks 13 and 14 ensuring the junction between the reaction mass 4 and the mold mounted floating under the support 3 are hydraulic vibrating jacks supplied in synchronism by a hydraulic unit not shown.
  • the amplitude and frequency of their vibrations are adjustable independently of one another by acting in a known manner on the flow rate and on the pressure of the supply fluid.
  • the synchronized tremors generated by the two cylinders 13 and 14 cause the phase vibration of the mold 1 and of the filling concrete it contains, the whole vibrating unit.
  • This result can be obtained, on the one hand, thanks to the fact that the mold 1 is suspended floating under the support 3, which allows it to vibrate freely, and thanks to the fact that the vibrations are generated and maintained by hydraulic vibrating jacks capable of developing considerable efforts during very short time intervals in the form of rapid pulses.
  • the entire mass of concrete introduced into the mold is thus shaken in depth, which contributes to its compaction at the bottom of the mold and to obtaining a high and homogeneous compactness in all points of the molded product.
  • the vibration parameters are substantially identical in all points of the mold, which leads to the production of better quality, homogeneous and reproducible products.
  • the arm 6 carrying the cover 7 is then advanced so that the said cover covers the upper open end of the mold 1.
  • the concrete is then sent via the conduit 8 which opens into the cover 7 and the operation is started.
  • vibrating jacks 13 and 14 so that they agitate the mold 1 in phase during its filling.
  • the rods of the two vibrating jacks 13 and 14 are detached from the gussets 9 and 10 of the mold, while the cover 7 is lifted by the arm 6 which disappears towards the rear so as to release the mold 1 which is removed while a new empty mold takes its place.
  • the invention makes it possible to improve working conditions by the fact that the noise level is considerably reduced and that the adjustments are facilitated.
  • the mold is arranged vertically and suspended under a support hung on a bridge or a crane, but obviously the mold can also be arranged horizontally and simply placed on cradles leaving it all freedom to vibrate, the vibrating jacks then taking support on the one hand on the ground and on the other hand under the mold which they make jump in synchronism.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
EP19790400978 1978-12-07 1979-12-06 Einrichtung zum Giessen von Betongegenständen Expired EP0012675B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7834547A FR2443322A1 (fr) 1978-12-07 1978-12-07 Procede et installation de moulage de produits en beton
FR7834547 1978-12-07

Publications (2)

Publication Number Publication Date
EP0012675A1 true EP0012675A1 (de) 1980-06-25
EP0012675B1 EP0012675B1 (de) 1983-06-01

Family

ID=9215818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790400978 Expired EP0012675B1 (de) 1978-12-07 1979-12-06 Einrichtung zum Giessen von Betongegenständen

Country Status (3)

Country Link
EP (1) EP0012675B1 (de)
DE (1) DE2965594D1 (de)
FR (1) FR2443322A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292105A (en) * 1994-08-10 1996-02-14 Kameel Diab Sawalha System for producing discrete components or articles from continous fibre metal matrix composite
AT402908B (de) * 1994-05-03 1997-09-25 Hm Betonfertigteilwerk Hans Ma Vorrichtung zum herstellen von dünnen fertigteilen für verlorene schalungsteile
CN118721415A (zh) * 2024-09-02 2024-10-01 江苏恒力达机械有限公司 一种混凝土电杆成型机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR722789A (fr) * 1930-12-05 1932-03-25 Procédé et dispositifs pour la fabrication d'objets en béton armé ou non ou matière susceptible d'être agglomérée
US1873412A (en) * 1929-12-14 1932-08-23 Jackson Corwill Molding machine
FR904373A (fr) * 1943-12-17 1945-11-05 Appareils de suspension vibrants
FR1004441A (fr) * 1947-04-22 1952-03-31 Perfectionnements apportés aux moyens pour la mise en oeuvre des agglomérats du genre des bétons

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH159614A (de) * 1932-08-29 1933-01-31 Steiner Werner Maschine zur Herstellung von Röhren aus Zement, Beton oder dergleichen.
US2614312A (en) * 1946-06-10 1952-10-21 American Pipe & Constr Co Method of molding tubular concrete articles
US2585756A (en) * 1947-08-11 1952-02-12 Hector X Eschenbrenner Method and apparatus for forming concrete pipes
DE815171C (de) * 1949-11-15 1951-10-01 Karl Bernt Jidell Verfahren und Vorrichtung zur Herstellung von Betonrohren
GB661259A (en) * 1949-12-20 1951-11-21 Knut Axel Bildt Improvements in machines for manufacturing concrete pipes
DE878324C (de) * 1951-10-23 1953-06-01 Schlosser & Co Formmaschine fuer Koerper mit durchgehenden Hohlraeumen
US2839278A (en) * 1953-08-24 1958-06-17 Ernest D Rowe Vibrating device
FR1138855A (fr) * 1955-10-25 1957-06-20 Machine pour la fabrication de tuyaux et autres pièces en un matériau vibré
US3047959A (en) * 1959-03-24 1962-08-07 Warren F Selbert Gaging device
DE1113660B (de) * 1960-05-03 1961-09-07 Peter Wacker Verfahren und Vorrichtung zum Herstellen von Betonrohren
US3470279A (en) * 1964-10-29 1969-09-30 William Glen Abbott Process of molding and compacting hollow concrete products including pulsating water vibrator means
FR1490762A (fr) * 1966-07-08 1967-08-04 Machine avec plateaux vibrants et pression hydraulique, pour la fabrication de tuyaux armés et non armés en béton
US3550225A (en) * 1968-03-01 1970-12-29 Burton D Smith Concrete pipe molding assembly
US3584356A (en) * 1969-02-07 1971-06-15 Autoval Pipe Machinery Inc Apparatus for producing concrete pipe
DE2547762C3 (de) * 1975-10-24 1979-05-10 Vsesojuznyj Nautschno-Issledovatelskij Institut Po Maschinam Dlja Promyschlennosti Stroitelnych Materialov, Gatschina Leningradskoj Oblasti (Sowjetunion) Vorrichtung zum Rüttelformen von Bauelementen aus Beton

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1873412A (en) * 1929-12-14 1932-08-23 Jackson Corwill Molding machine
FR722789A (fr) * 1930-12-05 1932-03-25 Procédé et dispositifs pour la fabrication d'objets en béton armé ou non ou matière susceptible d'être agglomérée
FR904373A (fr) * 1943-12-17 1945-11-05 Appareils de suspension vibrants
FR1004441A (fr) * 1947-04-22 1952-03-31 Perfectionnements apportés aux moyens pour la mise en oeuvre des agglomérats du genre des bétons

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402908B (de) * 1994-05-03 1997-09-25 Hm Betonfertigteilwerk Hans Ma Vorrichtung zum herstellen von dünnen fertigteilen für verlorene schalungsteile
GB2292105A (en) * 1994-08-10 1996-02-14 Kameel Diab Sawalha System for producing discrete components or articles from continous fibre metal matrix composite
GB2292105B (en) * 1994-08-10 1999-03-17 Kameel Diab Sawalha System for producing discrete components or articles from continuous fibre metal matrix composite
CN118721415A (zh) * 2024-09-02 2024-10-01 江苏恒力达机械有限公司 一种混凝土电杆成型机

Also Published As

Publication number Publication date
DE2965594D1 (en) 1983-07-07
FR2443322B1 (de) 1982-06-18
EP0012675B1 (de) 1983-06-01
FR2443322A1 (fr) 1980-07-04

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