EP0512776A1 - Düse zum Giessen von Beton - Google Patents

Düse zum Giessen von Beton Download PDF

Info

Publication number
EP0512776A1
EP0512776A1 EP92303997A EP92303997A EP0512776A1 EP 0512776 A1 EP0512776 A1 EP 0512776A1 EP 92303997 A EP92303997 A EP 92303997A EP 92303997 A EP92303997 A EP 92303997A EP 0512776 A1 EP0512776 A1 EP 0512776A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
concrete mix
casting
gating
mold
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
EP92303997A
Other languages
English (en)
French (fr)
Other versions
EP0512776B1 (de
Inventor
Paavo Ojanen
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.)
PARTEK CONCRETE ENGINEERING LTD.
Original Assignee
Partek Concrete Engineering 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 Partek Concrete Engineering Ltd filed Critical Partek Concrete Engineering Ltd
Publication of EP0512776A1 publication Critical patent/EP0512776A1/de
Application granted granted Critical
Publication of EP0512776B1 publication Critical patent/EP0512776B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/0225—Feeding specific quantities of material at specific locations in the mould
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/026—Feeding the moulding material in measured quantities from a container or silo by using a movable hopper transferring the moulding material to the moulding cavities

Definitions

  • the present invention relates to a concrete casting nozzle in accordance with the preamble of claim l for metering compacted concrete into casting molds.
  • the method also concerns a method in accordance with the preamble of claim ll for casting concrete.
  • the concrete mix is conventionally fed in an uncompacted form into the casting mold.
  • the metering of the concrete mix is implemented using shutter gates, vibratory feeders, band conveyors, augers or similar conventional feeder means.
  • Such feeder means do not generally employ nozzles for confining the flow of the concrete mix into the mold from all sides of the flow, whereby the flow and the filling of the mold cannot be controlled accurately. Therefore, the metering of the concrete mix remains inaccurate.
  • the surface of the cast concrete is levelled using vibratory beams, troweling strips and boards and similar tools, and the concrete in the mold is compacted by vibrating the mold or using vibrator beams or rods.
  • the Finnish patent application 886043 discloses a casting method in which the concrete mix is compacted prior to its teed into the mold.
  • the concrete mix is compacted in a separate bin equipped with under- and overpressure generating means and a vibrator.
  • the compacted mix is fed into the mold with the help of the high pressure or a pump. Because the concrete mix is compacted prior to being fed, the feeding action must be continuous to avoid losing the compaction effect.
  • the feed point must be throttled by a gate to generate a counterpressure, or alternatively, the mold must be filled by feeding the concrete mix upward against gravity via the bottom of the mold. Because the concrete mix is not vibrated after compaction, it flows unsatisfactorily thus causing problems in the filling of the mold and possibly leaving voids in the mold.
  • an apparatus comprising a feed bin having a feed opening in its bottom and expansible shutter means, which can be lowered in the opening for metering the flow of concrete mix.
  • This apparatus further comprises vibrator means within the shutter means and outside the bin.
  • SU inventor's certificate 395 265 is disclosed an apparatus comprising a feed bin having a teed opening in its bottom and conical shutter means, which can be lifted to close the opening for metering the flow of concrete mix.
  • a vibrator is fitted in the cone of the shutter means.
  • This apparatus has the same drawbacks as the apparatus described in SU l 35l 793.
  • the method is based on feeding the concrete mix into the mold by means of a casting nozzle, whose body incorporates both a shutter element and a vibrator element.
  • the casting nozzle according to the invention is characterized by what is stated in the characterizing part of claim l.
  • the casting method according to the invention is characterized by what is stated in the characterizing part of claim ll.
  • the shutter element adapted to the inside of the nozzle body close to the nozzle exit, whereby the gating plane of the shutter element is adapted to be situated in the area formed between the lower end of the nozzle body and the lower exit end of the nozzle.
  • the apparatus according to the invention has at least one such vibrator element whose vibratory output power is adjustable. If the power level of one vibrator element proves insufficient, the apparatus according to the invention can be equipped with several vibrator elements. Then, they can be adapted in the same plane, or more advantageously, at different heights within the nozzle body, whereby the latter arrangement permits the vibration of the fed concrete mix over a greater length.
  • the concrete mix to be cast can be transferred to the casting machine without pretreatment such as precompaction. If desired, the concrete mix can also be precompacted.
  • the concrete mix is compacted prior to its placement in the mold, thus obviating the need for vibrating the mold or the concrete poured into it and so compacting a large amount of concrete, whereby the energy consumed in vibration remains smaller.
  • the compacting effect can thus be imposed on a smaller volume of the mix by virtue of the nozzle, whereby a high energy density is attained and the compaction becomes effective.
  • the compaction takes place in the flow channel as a continuous process.
  • the agitation caused by vibrator element is most effective at the interface between the concrete discharging from the nozzle and that already cast in the mold at which the vibration is concentrated to a confined area thus achieving a high energy density. Due to the effective vibration, the concrete mix flows readily into the mold and conforms well to the shape of the mold. Noise disturbance can be avoided even if high-frequency vibration is used, because the vibrator element can be totally immersed in the concrete mix where it is fully insulated from the surrounding structures of the apparatus.
  • the concrete mix flow can be metered with a high degree of accuracy, since the mix is already compacted when entering the mold and its volume remains unaltered in the mold by further compaction.
  • the top surface of an open casting mold can be levelled without post-vibrating or troweling, thus allowing the completion of the product being cast in a single workphase.
  • Narrow gaps and thin molds can be filled without problems by virtue of the narrow exit of the nozzle.
  • the height of the nozzle from the mold bottom can be steplessly adjusted, thus allowing the control of the nozzle height position to match the height of the product being cast.
  • the height of the product being cast can be controlled by varying the exit level of the nozzle, whereby products of different height can be cast in a single mold without changing the walls of the mold.
  • the concrete mix feed bin and line can be reliably closed for the duration of casting pauses and the casting process is easy to automate.
  • Figure l shows an overview diagram of a casting machine equipped with a casting nozzle according to the invention.
  • Figure 2 shows a detail of the machine illustrated in Fig. l in an enlarged scale.
  • Figure 3 shows the lower part of the diagram of Fig. 2 in a sectioned view illustrating an embodiment of the invention.
  • Figure 4 shows another embodiment of the invention in a sectioned view.
  • Figure 5 shows a third embodiment of the invention in a sectioned view.
  • Fig. l illustrates the adaptation of the invention to a casting machine having portal transfer functions.
  • a feed bin 5 with a nozzle 6 is supported by means of a lift 4 and a trolley 3 from a overhead bridge 2.
  • the overhead bridge 2 is movable on wheels 22 running on rails 2l.
  • a casting mold l is placed under the casting machine. Casting into the mold l occurs from above into the mold and the nozzle 6 is moved in the mold l by controlling the motions of the overhead bridge 2, the trolley 3 and the lift 4.
  • the structures and control of such portal transfer arrangements are known in the art, so their closer examination in this context can be omitted.
  • Fig. 2 illustrates the external structures of the bin 5 and the nozzle 6 in greater detail.
  • the bin l has a conical shape tapering downwards.
  • the body of the nozzle 6 is mounted via a bearing 7 to the bin 5, thus allowing the rotation of the nozzle about the center axis of the bin 5 and the body of the nozzle 6 in the bearing 7.
  • the nozzle is rotated by means of a belt drive 8 and an actuator. The rotation of the nozzle improves its function, but is not essential for the function of the nozzle.
  • Above the bin 5 is mounted a lift lever ll having a pivotal joint at its one end and the other end connected to a lift cylinder l0.
  • a lift rod l2 with a pivotal joint at its end is adapted to the center of the lever ll, at the center axis of the bin 5.
  • Fig. 3 illustrates the nozzle structure in a sectional view.
  • the conical shape of the bin 5 is continued in the upper part of the body of the nozzle 6.
  • the upward widening shape of the nozzle entrance is advantageous for compaction, because entrained gas bubbles can then readily escape from the concrete mix undergoing compaction by upward flotation in such a construction.
  • the body of the nozzle 6 widens downward to form a conical exit l5.
  • the lower end of the lift rod l2 carries a vibrator rod l3 with a gate plate l4 mounted to its end.
  • the vibrator rod l3 is insulated from the rest of the machine frame by means of vibration insulating elements.
  • the concrete mix low passing through the nozzle 6 is controlled by altering the height position of the gate plate l4 in the nozzle 6 with the help of the lift rod l2.
  • the invention functions as follows.
  • a desired amount of concrete mix is transferred to the bin 5 using any conventional transfer means.
  • the gate plate l4 is lowered to a desired height and the vibrating and rotating means of the nozzle are activated.
  • the vibration of the vibrator rod l3 and the gate plate l4 plasticize the concrete mix so as to make it readily low through the nozzle 6.
  • the vibration compacts the mix, and moreover, the compacting effect becomes stronger toward the exit l5 of the nozzle, so the concrete mix flowing from the exit l5 of the nozzle into the mold has the longest possible history of compaction in the nozzle.
  • the gate plate l4 furthermore imparts a vibrating effect on the concrete mix just laid in the mold l, thereby keeping the mix laid in the mold compacted and augmenting the flow of the mix into the mold.
  • the relative height of the plate l4 to the mold and its shape can be varied to alter the compacting effect imparted on the mix laid in the mold l.
  • the compacting effect and flow rate within the body of the nozzle 6 can be controlled by adjusting the vibratory frequency and amplitude of the vibrator rod l3, that is, the input power to the rod.
  • the control can be simply implemented by varying the rotational speed of the eccentric of the vibrator rod l3.
  • the exit l5 of the nozzle discharges the concrete mix into the mold l.
  • the mix laid in the mold l stays in a levelled layer without spreading in the mold, so an exactly metered amount of concrete mix can be laid in the mold.
  • the diameter of the exit l5 of the nozzle can typically be in the order of 200...500 mm, thus rendering the nozzle capabilities of also casting narrow-width products.
  • the dimensioning of the nozzle is not, however, crucial for the implementation of the invention, whereby said dimensions can readily be varied.
  • Essential for the invention is, that the nozzle forms a closed path for the concrete mix, wherein the mix can be compacted.
  • the nozzle should be narrow compared to the volume of the feed bin or other feed elements, which may be used in connection of the invention.
  • the cross section of the nozzle can be varied so as to be circular, elliptical, rectangular or polygonal, for instance.
  • Fig. 4 illustrates an alternative embodiment of the invention.
  • the feed action of the concrete mix has been augmented by means of an auger l6 which is placed so as to partially extend to the inside of the bin 5.
  • the auger l6 is continued as a self-supporting flight into the inside of the body of the nozzle 6.
  • the vibrator rod l3 is mounted to the end of the shaft 20 of the auger l6, thus allowing it to stay within the nozzle 6 in the center of the self-supporting flight l6 without touching the flight l6.
  • the vibrator rod l3 can be lowered and elevated within the shaft 20 of the feed auger, thereby controlling the concrete mix flow by altering the relative height position of the gate plate l4 placed to the end of the vibrator rod l3 in the same manner as described above for the preceding embodiment.
  • the length of the vibrated concrete mix column can be relatively long in this embodiment, whereby a good compaction result is attained.
  • the gate plate performing as the gating element is replaced by a collar bellows valve l7.
  • the rims of the bellows l7 are attached to the inner rims of the exit l5, and a line 18 for pressurized hydraulic oil is routed to the inside of the bellows through the structures of the exit l5 of the nozzle.
  • the bellows l7 can be made of rubber, synthetic materials or other resilient materials.
  • the vibrator rod l3 can now advantageously be a conventional vibrator rod, whose tip is placed approximately level with the lower rim of the exit of the nozzle l5.
  • This and the other embodiments of the invention can employ additional vibrators l9 to augment the compaction and feed of the concrete mix.
  • the invention can have different embodiments.
  • the gating element of the nozzle can be implemented using different types of elements, yet advantageously utilizing such a construction of the gating element in which the vibrator rod l3 can be inserted so as to extend through the gating element.
  • the gating surface of the gating element must be placed close to the exit l5 of the nozzle and the lower end of the body part of the nozzle 6 in order to make the compaction of the concrete mix possible before exiting past the gating element.
  • a bellows valve is used as the gating element, its pressurizing medium can be compressed air or other pressurized medium readily available at the casting site.
  • the casting nozzle can be adapted to different types of casting machines. Replacing the vibrator rod, other mechanical vibrating means or different types of sonic transducers can be used, yet the vibrator rod offers a simpler construction of the nozzle, and when necessary, an extremely compact form of the nozzle.
  • the vibrator means can also be placed outside the nozzle, but such a construction causes noise disturbance.
  • the nozzle design presented here is also applicable to the casting inclined and vertical surfaces and shaped objects. Such casting operations require the use of a stiff concrete mix and forced feed by means of, e. g., overpressure or a feed auger.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Paper (AREA)
  • Pens And Brushes (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP92303997A 1991-05-07 1992-05-01 Düse zum Giessen von Beton Expired - Lifetime EP0512776B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI912206A FI912206A (fi) 1991-05-07 1991-05-07 Betonggjutmunstycke och foerfarande foer gjutning av betong
FI912206 1991-05-07

Publications (2)

Publication Number Publication Date
EP0512776A1 true EP0512776A1 (de) 1992-11-11
EP0512776B1 EP0512776B1 (de) 1995-03-08

Family

ID=8532462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92303997A Expired - Lifetime EP0512776B1 (de) 1991-05-07 1992-05-01 Düse zum Giessen von Beton

Country Status (6)

Country Link
EP (1) EP0512776B1 (de)
AT (1) ATE119456T1 (de)
DE (1) DE69201591T2 (de)
DK (1) DK0512776T3 (de)
ES (1) ES2069379T3 (de)
FI (1) FI912206A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2376655A (en) * 2001-01-26 2002-12-24 Roger Curtois Brandon Taylor A dispenser for a flowable and settable material
EP2397297A2 (de) 2010-06-15 2011-12-21 Elematic Group Oy Verfahren und Vorrichtung zum Gießen eines Betonprodukts
US20140252668A1 (en) * 2011-11-01 2014-09-11 Loughborough University Method and apparatus for delivery of cementitious material
EP2878416A2 (de) 2013-11-19 2015-06-03 Elematic Oy Ab Vorrichtung zum Gießen von Zementprodukten
EP2954992A1 (de) 2014-06-09 2015-12-16 Elematic Oyj Verfahren und vorrichtung zum giessen von zementprodukten
CN106827213A (zh) * 2017-01-20 2017-06-13 尹龙飞 一种混凝土护栏加工设备及其使用方法
RU205716U1 (ru) * 2020-12-22 2021-07-29 федеральное государственное бюджетное образовательное учреждение высшего образования «Белгородский государственный технологический университет им. В.Г. Шухова» Формующее устройство для аддитивного изготовления многослойных стеновых конструкций
RU2798762C1 (ru) * 2022-10-06 2023-06-27 Общество С Ограниченной Ответственностью "Аркон Констракшн" Печатающая головка строительного 3D принтера
WO2024076261A1 (ru) * 2022-10-06 2024-04-11 Эйситриди, Инк. Печатающая головка строительного 3d принтера

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1476938A (en) * 1922-08-03 1923-12-11 Standard Plastering System Means and method for preparing plastic compositions
US1581814A (en) * 1923-02-28 1926-04-20 Edward J Schuh Machine for making concrete products
US2185540A (en) * 1937-10-13 1940-01-02 Robert P Cady Apparatus for compacting concrete
FR1001885A (fr) * 1946-06-26 1952-02-28 Keller Johann Procédé et dispositif pour le décoffrage du béton vibré
GB813659A (en) * 1957-03-06 1959-05-21 Alite Machines Ltd A machine for compressing measured quantities of cosmetic powder into a cake
AU418818B1 (en) * 1967-05-17 1971-11-12 DOUGLAS BLOCK and GEOFFREY GRANTHAM ARTHUR Means and method of production of acoustic tiles
FR2270068A1 (de) * 1974-05-06 1975-12-05 Katzenberger Helmut
DE2911384B1 (de) * 1979-03-23 1980-02-14 Werner & Pfleiderer Vorrichtung zum Einfuellen exploslblen pulverfoermigen Materials in eine Pressenmatrize

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1476938A (en) * 1922-08-03 1923-12-11 Standard Plastering System Means and method for preparing plastic compositions
US1581814A (en) * 1923-02-28 1926-04-20 Edward J Schuh Machine for making concrete products
US2185540A (en) * 1937-10-13 1940-01-02 Robert P Cady Apparatus for compacting concrete
FR1001885A (fr) * 1946-06-26 1952-02-28 Keller Johann Procédé et dispositif pour le décoffrage du béton vibré
GB813659A (en) * 1957-03-06 1959-05-21 Alite Machines Ltd A machine for compressing measured quantities of cosmetic powder into a cake
AU418818B1 (en) * 1967-05-17 1971-11-12 DOUGLAS BLOCK and GEOFFREY GRANTHAM ARTHUR Means and method of production of acoustic tiles
FR2270068A1 (de) * 1974-05-06 1975-12-05 Katzenberger Helmut
DE2911384B1 (de) * 1979-03-23 1980-02-14 Werner & Pfleiderer Vorrichtung zum Einfuellen exploslblen pulverfoermigen Materials in eine Pressenmatrize

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 93 (M-939)(4036) 21 February 1990 & JP-A-1 304 908 ( ASAHI MALLEABLE IRON CO LTD ) 8 December 1989 *
SOVIET INVENTIONS ILLUSTRATED , DERWENT PUBLICATIONS LTD. , WEEK 9050 , ABSTRACT NUMBER 90-374142/50 , FEBRUARY 6 , 1991 & SU-A-1558678 ( TSENTRENERGOSTROIPR ) APRIL 23 , 1990 *
SOVIET INVENTIONS ILLUSTRATED , DERWENT PUBLICATIONS LTD. , WEEK 9107 , ABSTRACT NUMBER 91-049676/07 , APRIL 3 ,1991 & SU-A-1570915 ( STROIDETAL TECH BUR ) JUNE 15 , 1990 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2376655A (en) * 2001-01-26 2002-12-24 Roger Curtois Brandon Taylor A dispenser for a flowable and settable material
GB2376655B (en) * 2001-01-26 2004-07-14 Roger Curtois Brandon Taylor A dispenser for a flowable and settable material
EP2397297A2 (de) 2010-06-15 2011-12-21 Elematic Group Oy Verfahren und Vorrichtung zum Gießen eines Betonprodukts
EP2397297A3 (de) * 2010-06-15 2014-03-26 Elematic Oy Ab Verfahren und Vorrichtung zum Gießen eines Betonprodukts
US20140252668A1 (en) * 2011-11-01 2014-09-11 Loughborough University Method and apparatus for delivery of cementitious material
US20150231797A1 (en) * 2013-11-19 2015-08-20 Elematic Oy Ab Apparatus for casting concrete products
EP2878416A2 (de) 2013-11-19 2015-06-03 Elematic Oy Ab Vorrichtung zum Gießen von Zementprodukten
EP2954992A1 (de) 2014-06-09 2015-12-16 Elematic Oyj Verfahren und vorrichtung zum giessen von zementprodukten
US10029390B2 (en) 2014-06-09 2018-07-24 Elematic Oyj Method and apparatus for casting concrete products
RU2686886C2 (ru) * 2014-06-09 2019-05-06 Элематик Ойй Способ и устройство для литья бетонных изделий
CN106827213A (zh) * 2017-01-20 2017-06-13 尹龙飞 一种混凝土护栏加工设备及其使用方法
RU205716U1 (ru) * 2020-12-22 2021-07-29 федеральное государственное бюджетное образовательное учреждение высшего образования «Белгородский государственный технологический университет им. В.Г. Шухова» Формующее устройство для аддитивного изготовления многослойных стеновых конструкций
RU2798762C1 (ru) * 2022-10-06 2023-06-27 Общество С Ограниченной Ответственностью "Аркон Констракшн" Печатающая головка строительного 3D принтера
WO2024076261A1 (ru) * 2022-10-06 2024-04-11 Эйситриди, Инк. Печатающая головка строительного 3d принтера

Also Published As

Publication number Publication date
DE69201591T2 (de) 1995-08-17
FI912206A0 (fi) 1991-05-07
ATE119456T1 (de) 1995-03-15
EP0512776B1 (de) 1995-03-08
DK0512776T3 (da) 1995-05-15
ES2069379T3 (es) 1995-05-01
DE69201591D1 (de) 1995-04-13
FI912206A (fi) 1992-11-08

Similar Documents

Publication Publication Date Title
EP0512776B1 (de) Düse zum Giessen von Beton
CN112127634A (zh) 一种建筑混凝土浇筑振捣辅助系统
US1694563A (en) Method of molding ceramic materials
EP0677362B1 (de) Verfahren und Vorrichtung zum Herstellen von Betongegenständen
US2382458A (en) Apparatus and method for molding concrete blocks
CN105171909B (zh) 用于浇注混凝土制品的方法和设备
US3584356A (en) Apparatus for producing concrete pipe
CN1141659A (zh) 用于混凝土的成级的共振频率振动的方法和装置
EP0600887B1 (de) Vorrichtung und verfahren zum füllen von schussköpfen mit formstoffen
EP0326870B1 (de) Verfahren und Vorrichtung zur Durchführung des Verfahrens zum Verdichten von Giessereiformsand
FI74649C (fi) Foerfarande och anordning foer gjutning av betongprodukter.
JPS61104802A (ja) コンクリ−ト製品の成形方法及びその装置
FI102057B (fi) Menetelmä ja laitteisto betonituotteiden valamiseksi
JP2760281B2 (ja) Ａｌｃ原料スラリーの注入装置
EP0376353A1 (de) Verfahren und Vorrichtung zum Giessen von Betonkörpern
JPH073894U (ja) 粉体充填装置
EP0244404B1 (de) Verfahren zum giessen von betonerzeugnissen und giessform dazu
CN220331608U (zh) 搅拌站骨料仓的下料装置
JP2019155320A (ja) 慣性力付与装置
SU1097501A1 (ru) Бетоноукладчик
US20020071885A1 (en) Concrete block vibrator
CN206510470U (zh) 高密度磁环粉末成型设备
SU739173A1 (ru) Устройство дл формовани и отделки изделий из бетонной смеси
SU965776A1 (ru) Способ формовани бетонных изделий
JPS5837121B2 (ja) 土練押出機における粘土給出装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE DK ES FR GB IT NL SE

17P Request for examination filed

Effective date: 19930128

17Q First examination report despatched

Effective date: 19931202

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PARTEK CONCRETE ENGINEERING LTD.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE DK ES FR GB IT NL SE

REF Corresponds to:

Ref document number: 119456

Country of ref document: AT

Date of ref document: 19950315

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: STUDIO INGG. FISCHETTI & WEBER

REF Corresponds to:

Ref document number: 69201591

Country of ref document: DE

Date of ref document: 19950413

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2069379

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110615

Year of fee payment: 20

Ref country code: ES

Payment date: 20110524

Year of fee payment: 20

Ref country code: SE

Payment date: 20110524

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20110525

Year of fee payment: 20

Ref country code: BE

Payment date: 20110524

Year of fee payment: 20

Ref country code: NL

Payment date: 20110526

Year of fee payment: 20

Ref country code: GB

Payment date: 20110527

Year of fee payment: 20

Ref country code: DK

Payment date: 20110525

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110527

Year of fee payment: 20

Ref country code: IT

Payment date: 20110521

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69201591

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69201591

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V4

Effective date: 20120501

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20120430

BE20 Be: patent expired

Owner name: *PARTEK CONCRETE ENGINEERING LTD

Effective date: 20120501

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120503

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120430

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 119456

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120501

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20130718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120502