EP1293314A2 - Méthode et appareillage pour compacter des matériaux - Google Patents

Méthode et appareillage pour compacter des matériaux Download PDF

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Publication number
EP1293314A2
EP1293314A2 EP02019204A EP02019204A EP1293314A2 EP 1293314 A2 EP1293314 A2 EP 1293314A2 EP 02019204 A EP02019204 A EP 02019204A EP 02019204 A EP02019204 A EP 02019204A EP 1293314 A2 EP1293314 A2 EP 1293314A2
Authority
EP
European Patent Office
Prior art keywords
mold
mold bottom
arrangement according
receiving
shaft
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
EP02019204A
Other languages
German (de)
English (en)
Other versions
EP1293314A3 (fr
EP1293314B1 (fr
Inventor
Frank Bombien
Helmut Kuch
Jörg-Henry Schwabe
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.)
IAB Institut fuer Angewandte Bauforschung Weimar gGmbH
Original Assignee
Institut fuer Fertigteiltechnik und Fertigbau Weimar eV
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 Institut fuer Fertigteiltechnik und Fertigbau Weimar eV filed Critical Institut fuer Fertigteiltechnik und Fertigbau Weimar eV
Publication of EP1293314A2 publication Critical patent/EP1293314A2/fr
Publication of EP1293314A3 publication Critical patent/EP1293314A3/fr
Application granted granted Critical
Publication of EP1293314B1 publication Critical patent/EP1293314B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables

Definitions

  • the invention relates to a method for compaction and shaping of mixtures, preferably of amount of concrete, in a receiving form receiving the batch.
  • the invention further relates to an arrangement for compaction and shaping from Gemenge and refers to the problem of uniform compaction of the mixture.
  • the induced bending vibrations are vibration modes of forced vibrations in the form of standing waves that So have local antinodes and nodes, what an uneven Distribution of the acceleration amplitude corresponds and thus the disadvantage of a unequal energy input tends to increase.
  • DE 43 41 387 A1 proposes a device in which in which the receiving form to circular shaking movements in the horizontal level is stimulated.
  • the magazine "Building Construction”, 3rd edition of 1996, pp. 18 to 21, also discloses a device having circular jarring movements works, presented. The sound pressure level achieved with these arrangements Although lower than in the other arrangements, but they have Arrangements other disadvantages.
  • the invention is therefore the task based on developing a process with which in the production of large-scale Precast concrete a uniform entry of vibration energy in the concrete amount can be achieved in short production times.
  • the invention is Continue the task, a device for producing large-area To develop precast concrete parts, with the cost-effective mode of operation and short Production time a uniform entry of vibration energy in the concrete amount is reached.
  • the object is achieved in a method of the type described above Art solved by the fact that the bottom of the recording form, the movement of a continuous transverse wave is impressed, whereby the mixture compacts becomes.
  • Role The type of mixture, the design of the recording form and their natural vibrations, the loading of the vibration form, the vibration characteristics change, make an adjustment of the wavelengths to the particular circumstances necessary.
  • the exciter frequencies can be between 5 and 300 Hz.
  • the accelerations and the phase so too Select that the frequencies of the wave in the range of 30 to 150 Hz and the Accelerations in the range of three to ten times the acceleration of gravity. In order to the best compaction results are achieved.
  • the object concerning devices of the type described above kind solved by an arrangement that forms a receptacle, at least the mold bottom is designed to be flexible, for receiving the mixture, Continue one or more parallel to an axis under the mold bottom arranged rows of at least two interconnected means for Power transmission in the mold bottom for the purpose of deformation thereof, wherein the means periodically powered by force and all means with the same period are driven, and the power transmission through adjacent means temporally progressing takes place, whereby the mold bottom, the movement of a continuous transversal wave is imprinted.
  • the times to which each continuous power is transmitted to choose so that between the times of maximum power transmission of each two means a relationship such that the amount of the quotient of the difference between the times of maximum power transmission and the difference of Axis-related distance of the means to each other having the largest integer multiple of the wavelength which does not exceed the distance of the means from each other along the axis is constant and equal at different time points for all pairs of means.
  • This will explicitly set the phase of the wave. If the wave movement of the mold bottom is to be independent of the vibration properties of the formwork skin, then the distance between two adjacent means along the axis must be significantly smaller than the wavelength.
  • the distance of any two means along the axis can be greater than the wavelength, it is considered modulo the wavelength, ie, the distance becomes the largest integer multiple of the wavelength n ⁇ s - with the wavelength ⁇ and n of a natural number including "Zero" - which does not exceed the distance, deducted and considered only the remainder.
  • the same point in time corresponds to the same place in this perspective.
  • the wave then satisfies a simple, undamped wave equation, which as a solution is a function of the shape where ä is the amplitude, ⁇ the angular frequency, t the time, c the propagation velocity of the shaft, and x the location, here a one-dimensional coordinate, since the means are arranged along an axis.
  • the time of maximum power transmission will generally be at a zero crossing of the derivative. Due to the construction of recording form and means, the time may shift, but is repeated periodically. He serves as a reference, as well as any other time can be used, for. As the time of the smallest, falling in acceleration.
  • a phase ⁇ is the product of the angular frequency ⁇ with the quotient of location x relative to a reference point and propagation velocity c of the shaft, it follows that the constant quotient of time difference (t 2 -t 1 ) and the distance (x 2 -x 1 - n ⁇ ) of two means of which the largest integer multiple of the wavelength ⁇ , n ⁇ , which does not exceed the distance of the means from one another along the axis, is equal to the reciprocal of the propagation velocity of the wave.
  • the distance between two means here explicitly refers only to the distance projected on an axis along the axial direction and not to directions transversely thereto.
  • the mold bottom is predetermined Distances transverse to the axis of the mold bottom stiffening elements attached. Is due to the parallel arrangement of the rows and the choice of phases already in the given essentially the shape of a plane wave, so this effect is through the stiffening elements reinforced and imposed on the wave.
  • elastic elements whose vibration characteristics are chosen so must that the frequencies of the natural oscillations are not substantially overlap with the vibrations induced by the wave.
  • elastic elements are preferably springs in question, especially rubber, air or Steel springs, but also elastic layers such as insulating mats are preferred.
  • a transmission of force can, for. B. can be achieved appropriately when the drive shaft consists of individual, elastically connected segments, each segment is assigned an imbalance and in each segment as a means to Power transmission one or more coupled to the mold bottom coupling elements are provided for introducing the forces in the mold bottom.
  • These Coupling elements can, for example, with the stiffening elements across the Be the same axis. Due to the elastic coupling of the segments they become deflected out of the axis of rotation of the drive shaft according to the unbalance movement, wherein forces are introduced into the coupling elements to the mold bottom and this is deformed. Due to the phase-shifted arrangement of the individual Imbalance forms a wave whose wavelength is due to the phase shift and the distance of the segments depends.
  • the Frequency of the wave change during operation, whereby the propagation speed the wave changes accordingly. Since in this arrangement the too transmitted power depends on the speed, the amplitude is also or frequency-dependent, whereby a change in the energy input can be realized can. Furthermore, it is possible for several rows, the drive shafts respectively rotate in pairs in opposite directions synchronously. In this way, the resulting horizontal forces are easily eliminated and do not need or only to be caught slightly by other damping constructions.
  • this arrangement has the advantage that the path amplitude Frequency and mass is independent, whereby the flexible production of different Components with different mass with the same entry of vibration energy is possible.
  • the geometric shape of the eccentric thereby contributes to a frequency maximum achievable amplitude fixed, the frequency can over the Speed can be varied.
  • the stand Eccentric in rotation at least temporarily in contact with the mold bottom, but indirect positive or positive, permanent connections are also conceivable the former cause less noise.
  • FIG. 1 shows the basic structure of a device with a mold bottom. 1 the movement of a wave can be imprinted.
  • the mold base 1 is on stored elastic elements 2, here as a coherent layer are designed. This layer in turn is connected to a foundation 3, which serves for receiving and storing the entire device.
  • stiffening elements 4 are attached. With imbalances 5, on a drive shaft 6 are arranged, the forces necessary for the deformation are generated and via the stiffening elements 4, which are also connected to the drive shaft 6 and whereby the wave is imprinted the shape of a plane wave, in the mold bottom 1 initiated.
  • the imbalances are arranged at equal distances from each other so arranged that their centers of gravity in each case outside the Are rotational axis, but regularly, so that upon rotation of the drive shaft 6 the center of gravity of the imbalance 5 consecutively at equal intervals reach their closest to the bottom of the mold 1 point.
  • the drive shaft 6 is made here from individual, elastically coupled to each other via connecting elements 7 Segments, each of which is assigned an imbalance. By the elastic Connection of the segments will this out according to the imbalance motion deflected the axis of rotation of the drive shaft 6, wherein forces in the coupling elements 4 are introduced to the mold base 1 and this is deformed.
  • the phase-shifted arrangement of the individual imbalances 5 forms a Wave whose wavelength of the phase shift and the distance of the Segments depends.

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)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
EP02019204.3A 2001-09-17 2002-08-27 Méthode et appareillage pour compacter des matériaux Expired - Lifetime EP1293314B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001147224 DE10147224B4 (de) 2001-09-17 2001-09-17 Verfahren und Anordnung zur Verdichtung von Gemenge
DE10147224 2001-09-17

Publications (3)

Publication Number Publication Date
EP1293314A2 true EP1293314A2 (fr) 2003-03-19
EP1293314A3 EP1293314A3 (fr) 2004-04-21
EP1293314B1 EP1293314B1 (fr) 2015-12-30

Family

ID=7700209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02019204.3A Expired - Lifetime EP1293314B1 (fr) 2001-09-17 2002-08-27 Méthode et appareillage pour compacter des matériaux

Country Status (3)

Country Link
EP (1) EP1293314B1 (fr)
DE (1) DE10147224B4 (fr)
DK (1) DK1293314T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005075166A2 (fr) * 2004-02-06 2005-08-18 Wacker Construction Equipment Ag Dispositif de compression de beton lors de la fabrication de pieces en beton
CN107009485A (zh) * 2017-06-01 2017-08-04 中国五冶集团有限公司 附着式振动器排布结构、方法及一种预制混凝土浇筑结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3427780A1 (de) 1984-07-27 1986-01-30 Karl-Heinz Dipl.-Ing. Elmer Vorrichtung zur verdichtung und herstellung von formkoerpern aus koernigem material
DE4341387A1 (de) 1993-12-04 1995-06-08 Netter Gmbh Rütteltisch zum Rütteln einer zu verdichtenden Masse und Rüttelverfahren zum Verdichten von Beton

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB790861A (en) * 1955-04-01 1958-02-19 Arthur Charles Carter Improvements relating to electro-magnetic vibratory apparatus for vibrating moulds for concrete and the like
DE3151075C1 (de) * 1981-12-23 1983-06-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Großflächige Rüttelvorrichtung
DE4400839A1 (de) * 1994-01-14 1995-07-20 Avermann Maschinenfabrik Betri Vorrichtung zur Herstellung von Betonfertigteilen
DE4436236A1 (de) * 1994-10-11 1996-04-18 Licentia Gmbh Rüttelvorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3427780A1 (de) 1984-07-27 1986-01-30 Karl-Heinz Dipl.-Ing. Elmer Vorrichtung zur verdichtung und herstellung von formkoerpern aus koernigem material
DE4341387A1 (de) 1993-12-04 1995-06-08 Netter Gmbh Rütteltisch zum Rütteln einer zu verdichtenden Masse und Rüttelverfahren zum Verdichten von Beton

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Betonwerk + Fertigteil-Technik", 1999, pages: 52 - 59
"Hochbau", 1996, pages: 18 - 21
S. WAMBACH, W. SCHNEIDER: "Außenrüttler - Grundlagen und praktische Anwendungen der Rütteltechnik", 1992, VERLAG MODERNE INDUSTRIE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005075166A2 (fr) * 2004-02-06 2005-08-18 Wacker Construction Equipment Ag Dispositif de compression de beton lors de la fabrication de pieces en beton
WO2005075166A3 (fr) * 2004-02-06 2005-10-20 Wacker Construction Equipment Dispositif de compression de beton lors de la fabrication de pieces en beton
US7465161B2 (en) 2004-02-06 2008-12-16 Wacker Construction Equipment Ag Device for compressing concrete during the manufacture of concrete parts
CN1925957B (zh) * 2004-02-06 2011-04-06 威克纽森欧洲公司 混凝土制品制造中用来压实混凝土的装置
CN107009485A (zh) * 2017-06-01 2017-08-04 中国五冶集团有限公司 附着式振动器排布结构、方法及一种预制混凝土浇筑结构

Also Published As

Publication number Publication date
EP1293314A3 (fr) 2004-04-21
EP1293314B1 (fr) 2015-12-30
DE10147224B4 (de) 2006-05-24
DE10147224A1 (de) 2003-04-17
DK1293314T3 (en) 2016-03-14

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