EP0089420A1 - Verfahren, Vorrichtung und Form zur Herstellung von Betonrohren - Google Patents

Verfahren, Vorrichtung und Form zur Herstellung von Betonrohren Download PDF

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Publication number
EP0089420A1
EP0089420A1 EP19820200354 EP82200354A EP0089420A1 EP 0089420 A1 EP0089420 A1 EP 0089420A1 EP 19820200354 EP19820200354 EP 19820200354 EP 82200354 A EP82200354 A EP 82200354A EP 0089420 A1 EP0089420 A1 EP 0089420A1
Authority
EP
European Patent Office
Prior art keywords
mould
casting
jacket
mould part
core
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.)
Ceased
Application number
EP19820200354
Other languages
English (en)
French (fr)
Inventor
Dirk Hendrik Griffioen
Jacob Cornelis De Bonte
Willem Adriaan Verpalen
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.)
Ballast Nedam NV
WACO BETON BV
Original Assignee
WACO BETON BV
Ballast Nedam Groep NV
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 WACO BETON BV, Ballast Nedam Groep NV filed Critical WACO BETON BV
Priority to EP19820200354 priority Critical patent/EP0089420A1/de
Publication of EP0089420A1 publication Critical patent/EP0089420A1/de
Ceased 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
    • B28B21/90—Methods or apparatus for demoulding or discharging after shaping
    • 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
    • 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
    • B28B21/76—Moulds
    • 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
    • B28B21/86—Cores

Definitions

  • the invention relates to a method of manufacturing concrete tubes of angular cross-section adapted to join one another by means of a sleeve-wedge joint, the tube being manufactured in the following steps:
  • the tubes manufactured by said known method appear to be less strong on their top side than on their bottom side. Therefore, the concrete quality and hence the percentage of binder to be employed have to be chosen so that the top ends of the tubes are sufficiently strong, whereas the lower ends are stronger than is required.
  • the invention has for its object to reduce the difference in tube strength between top and bottom.
  • step C) an upper mould part is pressed in the axial direction of the mould cavity into the position bounding the mould cavity, whilst the mould is subjected to vibrations.
  • the density obtained above and below in the mould cavity is more uniform because the lower static pressure prevailing below in the mould cavity is compensated by the pressing force of the top mould part, said pressing force having greater effect above in the mould cavity and gradually less further down in the mould cavity.
  • the upper mould part, which is pressed home during step C) is narrower than the wall thickness of the tube.
  • the degree of filling can be better adjusted to be desired value, whilst the final, predetermined, preferred pressure force can be more readily obtained.
  • the invention relates to a method of manufacturinq concrete tubes, each having a plurality of lonqitudinal channels in the tube wall, each tube being obtained in the following steps:
  • the recessing elements are formed by lost casing elements, for example, of synthetic resin. These elements are expensive and can be positioned only with difficulty.
  • the invention provides an improvement of the method in this respect.
  • the recessing elements are each resiliently supported between the bottom and the upper mould part.
  • the invention furthermore provides an improved method of removing a casting out of the mould with reduced risk of damage.
  • the jacket is removed from the casting by moving it upwards with respect to the casting, which is urged downwards during the first part of said relative movement by means of a pressing rim matching the top edge of the casting.
  • the casting When during the curing period the casting is supported in a horizontal direction by means of a supporting rim covering the casting and having a side, preferably an inner and outer side supporting the casting in a horizontal sense, the supporting rim highly improves the deformation resistance of the casting.
  • this supporting rim is arranged on the mould for transport to the curing space.
  • the invention furthermore provides a device and mould defined in the claims for carrying out the method embodying the invention.
  • a vibrating table 11 provided with vibrators 14 bears through springs 12 on a floor 13.
  • a mould 2 is assembled, a core 3 of which is fastened by means of a flange 15 and bolts 16 to the vibratory table 11.
  • a bottom 5 which joins the core 3 by means of a sealing ring 17 and which has at the top the configuration of a tube sleeve.
  • the required reinforcing elements (not shown) and the jacket 4 are arranged on the bottom 5.
  • the jacket 4 has a top ring rigidly secured thereto by means of bolts 19 and forming an outer mould part 18 and having a downwardly converging shape.
  • the jacket 4 is secured by means of high bolts 20 and nuts 21 to the vibratory table 11, whilst a flange 22 of the bottom 5 is clamped between.
  • the mould 2 is assembled in this way in the first step A), the core 3, the bottom 5, the jacket 4 and the top ring 18 thus bounding a mould cavity 6 corresponding to the configuration of an angular tube 1 shown in Figure 7.
  • this mould 2 is filled with concrete mortar 7 up to the top edge 3, said mortar having a high degree of moisture.
  • step C) the concrete mortar 7 is densified to form a casting 8, whilst the mould 2 is subjected to vibrations by means of the vibrators 14 and an upper mould part 9 is urged by means of pressing means 25 in an axial direction of the mould cavity 6 in the direction of the arrow 10 into its position bounding the mould cavity 6 as is illustrated in Figure 2.
  • the top ring 18 and the upper mould part 9 having a width g smaller than the wall thickness f of the tube 1 define in common the configuration of the wedge of the tube 1 so that identical tubes 1 having the conventional sleeve-wedge joint can join one another with the interposition of an elastic sealing ring to form a continuous pipeline.
  • the inner upper mould part 9 has a downwardly converging inner side 42 to form a bevelled top rim 43 of the casting 84.
  • the device 24 for manufacturing tubes 1 by the method according to the invention is provided, apart from the mould 2, with pressing means 25 consisting, as shown in Figure 2, of a pressing frame 26 to which traction means formed by pivotable hooks 27 are suspended, said means gripping around the edges 28 of the jacket 4 and having fastened to them hydraulic rams 29, the feet 30 of which upon energization of the rams 29 press downwards the upper mould part 9 arranged around the core 3 until they come into contact with the top ring 18.
  • the top zone of the concrete mortar 7 is densified so that the densification thereof corresponds more with the satisfactory densification below in the mould 2 enhanced by the higher hydrostatic pressure.
  • the mould 2 may be vibrated already during step B).
  • FIG 8 shows that the mould 2 may comprise a plurality of recessing elements 31 for the formation of tensioning channels 32 (Figure 7).
  • These recessing elements 31 extend between an outer upper mould part formed by the top ring 18 and the bottom 5. Each of them bears by means of an annular lower rim 33 on a conical supporting element 34 of the bottom 5.
  • Each recessing element 31 is supported by spring means 35 on the top ring 18 since at the top end each of them has a shoulder 36 and a screwthreaded end 37 surrounded by pressurized helical spring 38 bearing on a stop plate 39 fastened to the top ring 18.
  • a nut 40 By means of a nut 40 the recessing element 31 formed by a downwardly converging pin is loosely suspended to the top ring 18. Above the shoulder 36 this pin is closed by means of sealing rings 41 and slidably arranged in a lubricant containing chamber 62.
  • the tensioning channels 32 can thus be recessed without additional manipulations.
  • Figure 3 to 5 illustrate the successive manipulations for removing the core 3 and the jacket 4 from the casting 8 ( Figure 6) during step D).
  • Figure 3 shows the removal of the core 3.
  • lifting means 45 comprising a lifting frame 46 with pivotable hooks 47 and hydraulic rams 48 the casting 8 is lifted from the core 3 whilst the pivotable hooks 47, the bolts 20 being loosened, grip below the bottom 5 and the pressing rods 49 of the rams 48 exert heavy pressure on the upper mould part 9.
  • the casting 8 free of the core 3 is put down, as shown in Figure 4, with its bottom 5 on a floor 50 of a steam chamber. Then the pivotable hooks 47 are hooked .
  • FIGS 9 and 10 show how with the aid of a different lifting device 56 an integral upper mould part 57 is urged into its position bounding the mould cavity.
  • Pivotable hooks 58 grip below the bottom 5 and whilst turning, each hook 58 engages an angle lever 59, which is energized by a hydraulic ram 60.
  • the angle lever 59 and the pivotable hooks 58 are proportioned and the angle lever 59 is journalled on a pressure frame 61 so that upon energization of the ram 60 the upper mould part 57 rigidly connected with the pressure frame 61 is pressed into its position bounding the mould cavity.
  • lifting members not shown
  • the pressure frame 61 together with the mould parts 4, 5 and 57 can be litted trom the core 3.
  • the ring 55 has a configuration matching the casting 8 of Figures 9 and 10 i.e. the upper mould part 57.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
EP19820200354 1982-03-23 1982-03-23 Verfahren, Vorrichtung und Form zur Herstellung von Betonrohren Ceased EP0089420A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19820200354 EP0089420A1 (de) 1982-03-23 1982-03-23 Verfahren, Vorrichtung und Form zur Herstellung von Betonrohren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19820200354 EP0089420A1 (de) 1982-03-23 1982-03-23 Verfahren, Vorrichtung und Form zur Herstellung von Betonrohren

Publications (1)

Publication Number Publication Date
EP0089420A1 true EP0089420A1 (de) 1983-09-28

Family

ID=8189474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820200354 Ceased EP0089420A1 (de) 1982-03-23 1982-03-23 Verfahren, Vorrichtung und Form zur Herstellung von Betonrohren

Country Status (1)

Country Link
EP (1) EP0089420A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351325A1 (de) * 1988-06-30 1990-01-17 Schlüsselbauer Maschinenbau Vorrichtung zum Herstellen eines ringförmigen Elementes aus Beton, insbesondere einer Schachtauskleidung
DE8812946U1 (de) * 1988-10-14 1990-02-08 H. Niemeyer Söhne GmbH & Co KG, 4446 Hörstel Vorrichtung zum Herstellen von Schachtunterteilen
FR2645468A1 (fr) * 1989-04-10 1990-10-12 Sabla Sa Machine et procede pour la fabrication d'elements tubulaires en beton a emboitement etanche
US5215673A (en) * 1992-02-03 1993-06-01 Roger Beacom Apparatus for the production of a symmetrical oval concrete pipe
AT398930B (de) * 1988-10-31 1995-02-27 Johann Schluesselbauer Vorrichtung zum herstellen eines rohrförmigen werkstückes aus beton, insbesondere eines schachtringes
CN109249526A (zh) * 2018-09-11 2019-01-22 长兴鑫鼎耐火材料厂(普通合伙） 一种耐火管生产用模具脱模装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR538726A (fr) * 1921-07-27 1922-06-14 Calice & Aubin A Procédé de fabrication de moellons creux à la presse
DE815171C (de) * 1949-11-15 1951-10-01 Karl Bernt Jidell Verfahren und Vorrichtung zur Herstellung von Betonrohren
US2602979A (en) * 1949-12-08 1952-07-15 Raymond Concrete Pile Co Method and apparatus for casting concrete bodies with cavities therein
US2823439A (en) * 1954-07-21 1958-02-18 Schmidgall Hartzell Henry Apparatus for making concrete culvert pipes
GB910067A (en) * 1960-05-03 1962-11-07 Wacker Hermann Improvements in or relating to a method and apparatus for the manufacture of concrete pipes or like tubular articles
GB1037564A (en) * 1964-04-27 1966-07-27 John Davron Ltd Method and machine for moulding pipes
US3584356A (en) * 1969-02-07 1971-06-15 Autoval Pipe Machinery Inc Apparatus for producing concrete pipe
GB2061178A (en) * 1979-10-12 1981-05-13 Skanska Cementgjuteriet Ab Process and device for production of concrete pipe by filling and compaction of fresh concrete in an upright form

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR538726A (fr) * 1921-07-27 1922-06-14 Calice & Aubin A Procédé de fabrication de moellons creux à la presse
DE815171C (de) * 1949-11-15 1951-10-01 Karl Bernt Jidell Verfahren und Vorrichtung zur Herstellung von Betonrohren
US2602979A (en) * 1949-12-08 1952-07-15 Raymond Concrete Pile Co Method and apparatus for casting concrete bodies with cavities therein
US2823439A (en) * 1954-07-21 1958-02-18 Schmidgall Hartzell Henry Apparatus for making concrete culvert pipes
GB910067A (en) * 1960-05-03 1962-11-07 Wacker Hermann Improvements in or relating to a method and apparatus for the manufacture of concrete pipes or like tubular articles
GB1037564A (en) * 1964-04-27 1966-07-27 John Davron Ltd Method and machine for moulding pipes
US3584356A (en) * 1969-02-07 1971-06-15 Autoval Pipe Machinery Inc Apparatus for producing concrete pipe
GB2061178A (en) * 1979-10-12 1981-05-13 Skanska Cementgjuteriet Ab Process and device for production of concrete pipe by filling and compaction of fresh concrete in an upright form

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0351325A1 (de) * 1988-06-30 1990-01-17 Schlüsselbauer Maschinenbau Vorrichtung zum Herstellen eines ringförmigen Elementes aus Beton, insbesondere einer Schachtauskleidung
DE8812946U1 (de) * 1988-10-14 1990-02-08 H. Niemeyer Söhne GmbH & Co KG, 4446 Hörstel Vorrichtung zum Herstellen von Schachtunterteilen
AT398930B (de) * 1988-10-31 1995-02-27 Johann Schluesselbauer Vorrichtung zum herstellen eines rohrförmigen werkstückes aus beton, insbesondere eines schachtringes
FR2645468A1 (fr) * 1989-04-10 1990-10-12 Sabla Sa Machine et procede pour la fabrication d'elements tubulaires en beton a emboitement etanche
US5215673A (en) * 1992-02-03 1993-06-01 Roger Beacom Apparatus for the production of a symmetrical oval concrete pipe
CN109249526A (zh) * 2018-09-11 2019-01-22 长兴鑫鼎耐火材料厂(普通合伙） 一种耐火管生产用模具脱模装置

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Effective date: 19830411

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Effective date: 19850312

R18R Application refused (corrected)

Effective date: 19850312

RIN1 Information on inventor provided before grant (corrected)

Inventor name: VERPALEN, WILLEM ADRIAAN

Inventor name: DE BONTE, JACOB CORNELIS

Inventor name: GRIFFIOEN, DIRK HENDRIK