EP1165907A1 - Vibrateur interne dote d'un systeme de mesure - Google Patents

Vibrateur interne dote d'un systeme de mesure

Info

Publication number
EP1165907A1
EP1165907A1 EP00910811A EP00910811A EP1165907A1 EP 1165907 A1 EP1165907 A1 EP 1165907A1 EP 00910811 A EP00910811 A EP 00910811A EP 00910811 A EP00910811 A EP 00910811A EP 1165907 A1 EP1165907 A1 EP 1165907A1
Authority
EP
European Patent Office
Prior art keywords
vibrating
measuring device
internal
unit
electric motor
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
EP00910811A
Other languages
German (de)
English (en)
Other versions
EP1165907B1 (fr
Inventor
Günter KUNZE
Georg Sick
Stefan Graul
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.)
Wacker Construction Equipment AG
Original Assignee
Wacker Werke GmbH and Co KG
Wacker Construction Equipment AG
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 Wacker Werke GmbH and Co KG, Wacker Construction Equipment AG filed Critical Wacker Werke GmbH and Co KG
Publication of EP1165907A1 publication Critical patent/EP1165907A1/fr
Application granted granted Critical
Publication of EP1165907B1 publication Critical patent/EP1165907B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
    • E04G21/08—Internal vibrators, e.g. needle vibrators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • 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
    • B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
    • B28B1/0935—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material using only elements wholly or partly immersed in the material, e.g. cores

Definitions

  • the invention relates to an internal vibrator according to the preamble of patent claim 1.
  • vibrators such as. B. hose or rod vibrators, compressed.
  • Such vibrators are internal vibrators, in which an unbalance is driven by an electric motor inside a vibrating bottle immersed in the fresh concrete, which causes vibrations that compress the concrete.
  • the building material concrete is subject to a variety of strict quality controls, the professional compaction of the concrete depends heavily on the individual skills of the operator of the internal vibrator. It alone determines whether an optimal and even compaction result is obtained.
  • the individual skills of different operators can of course be very different, the compaction quality can also vary considerably, which in certain cases leads to inadequate compaction results and thus to insufficient concrete strength.
  • DE-OS-39 01 893 describes an internal vibrating device with a vibrating unit and a circuit unit separated by an elastic connection, in which a measuring device for detecting the speed of a one Vibration generating device driving electric motor is provided.
  • the measuring device is part of a speed control device with which the speed of rotation of the electric motor can be controlled in such a way that it follows a preset value.
  • the invention has for its object to provide an internal vibrating device that enables the operator - regardless of his individual skills - to assess the quality of his compaction work.
  • the internal vibrating device has a measuring device for detecting at least one operating parameter of the internal vibrating device, wherein the operating parameter is a parameter from the group movement of the vibrating unit, vibration amplitude of the vibrating unit, vibration frequency of the vibrating unit, power consumption of the electric motor, electrical excitation frequency of the electric motor and winding temperature a stator of the electric motor.
  • the measuring device is advantageously operated by an evaluation circuit.
  • a measuring device for detecting the speed of the electric motor.
  • the measured values supplied by the measuring device are evaluated by an evaluation circuit, evaluation algorithms being available for this purpose, so that due to a change in the speed of the electromotive tors conclusions can be drawn on a change in the compression state of the material to be compressed.
  • the compression effect depends on numerous sizes, of which only a few can be measured.
  • this includes the electrical power consumed by the drive motor and its speed as well as non-variable variables such as the m • r value and the vibrating bottle mass.
  • the defined operating parameters partially overlap.
  • the movement, in particular the acceleration, of the vibrating unit can be inferred from the vibration amplitude and the vibrating frequency of the vibrating unit.
  • the power consumption of the electric motor is essentially determined by the flowing current - assuming a constant voltage.
  • a particularly advantageous embodiment of the invention is characterized in that the measuring device has at least one motion measuring device provided in the vibrating unit.
  • the motion measuring device preferably an acceleration sensor
  • the motion of the vibrating unit can be recorded directly, from which conclusions can be drawn about the compression effect. If the acceleration of the vibrating unit is measured, the speed and the movement path of the vibrating bottle can also be determined via integrations.
  • the evaluation circuit is advantageously provided in the circuit unit separate from the vibrating unit, feeds the motion measuring device and evaluates its signals. Since the circuit unit is only elastically connected to the vibrating unit, damaging influences on the electronics of the evaluation circuit are created by those in the vibrating unit
  • the circuit unit is advantageously combined in a switch housing together with a mains switch and a frequency converter.
  • the frequency converter is used to convert the mains frequency into a higher frequency required for the drive motor in the vibrating bottle. If two accelerometers are provided in the vibrating unit, the measuring directions of which are perpendicular to one another and to a longitudinal axis of the vibrating unit, the course of vibrations can be detected in all directions perpendicular to the longitudinal axis.
  • the measuring device has a power measuring device, which is coupled to the evaluation circuit, for determining the power generation device, ie. H. from the drive motor, absorbed electrical power.
  • the power measurement can take place, for example, by measuring the current drawn by the electric motor. It also allows conclusions to be drawn about the compression result.
  • the accelerometer is also provided in the vibrating unit, the measured values of the power measurement device and that of the accelerometer can be processed together by suitable algorithms. This also makes the measurement result more precise.
  • a signal can be given to the operator via an optical and / or acoustic display when his compaction work has achieved a result in an optimal range. Conversely, a warning signal can be given if the required compression is not achieved. If measurement results are found outside a predetermined range, the internal vibrating device can also automatically go into a safe stand-by state or be deactivated in some other way.
  • the figure shows an internal vibrator, also referred to as a hose vibrator.
  • hose vibrator also referred to as a hose vibrator.
  • hand-held vibrators or rod vibrators are also known, which are usually equipped with a handle for operation and have a considerably shorter overall length.
  • the hose vibrator has a vibrating bottle 2 held by a protective hose 1.
  • a switch housing 3 serving as a circuit unit, from which in turn a power cable 4 extends.
  • the internal vibrator is held on the operating and protective hose 1 by the operator.
  • a handle is provided for operation in which the switch housing 3 can be integrated.
  • an electric motor is provided which drives an imbalance likewise arranged in the vibrating bottle 2 in a manner known per se, as a result of which the desired vibrations of the vibrating bottle 2 arise.
  • a frequency converter (not shown) is arranged in the switch housing 3, which converts the electrical mains frequency supplied via the mains cable 4 to a higher frequency value, which is required for the operation of the electric motor. Values of 200 Hertz are common.
  • two accelerometers 6 serving as movement measuring devices are arranged in the vibrating bottle 2 such that their measuring directions 7 are perpendicular to a longitudinal axis 8 of the vibrating bottle 2.
  • the two measuring directions 7 are also perpendicular to one another, so that the accelerometers 6 can detect vibrations in a plane perpendicular to the longitudinal axis 8.
  • the accelerometers 6 are miniaturized components such as those used for. B. are known from vehicle technology in airbag controls or vehicle stabilization systems. As a result, the accelerometers 6 are very small, so that the vibrating bottle 2 does not have to be fundamentally redesigned by accommodating the accelerometers 6.
  • an evaluation circuit not shown, which is connected to the accelerometers 6 and thus not only feeds them with electrical energy, but also from the signals given to the accelerometers are recorded and evaluated
  • Evaluation algorithms are stored in the evaluation circuit, with the aid of which the measurement results supplied by the accelerometers 6 can be evaluated.
  • a memory can also be provided for this purpose, in which certain characteristic diagrams or algorithms are stored.
  • the person skilled in the art can determine the evaluation algorithms and characteristic maps by means of preliminary tests, in which, depending on the compression result, the corresponding values are put into relation.
  • the evaluation circuit can advantageously be implemented in the form of a neural network or fuzzy logic in order to process the measurement signals in real time and to enable the device to learn to a certain extent.
  • the evaluation electronics can also be constructed with classic control and regulation modules.
  • the evaluation circuit can also be accommodated directly in the vibrating bottle 2 or at other locations, but the switch housing 3 has the advantage of being largely vibration-free, which benefits the electronic components.
  • a power measuring device which is also advantageously accommodated in the switch housing 3 and which determines the electrical power consumed by the oscillation generating device, that is to say the electric motor, which is also an influencing criterion on the compaction effect of the ruttier, can be provided.
  • the power measurement device is connected to the evaluation circuit, the measurement signals being processed by suitable algorithms.
  • the evaluation circuit determines that the measured values lie in a certain range or take a certain course, which indicates that the compaction result is optimal at this point in time, it gives an optical signal to the operator via a display 9.
  • the display 9 can for example be realized by a red and a green lamp, whereby in the event of an insufficient compaction effect the red lamp and after reaching the desired compaction success the green lamp is lit.
  • Another display option consists of driving a light bar, the length or brightness of which varies depending on the compression result.
  • numerous other possibilities are conceivable with which the result of the evaluation of the measured variables can be communicated or used further.
  • the internal vibrator is usually exposed to harsh construction site conditions, so that a certain level of robustness should always be sought.
  • a speed measuring device for determining the speed of the electric motor, which drives an unbalance in the vibrating bottle.
  • the change in the speed values is processed by the evaluation circuit and used as a criterion for a compression effect or a compression result. In this way, the current state of compaction or at least the maximum achievable relative concrete density can be signaled to the operator.
  • the invention provides a sensitive internal vibrator with which it is possible to determine the effects on the vibrating bottle which result from a change in the structure of the fresh concrete and thus from the compaction activity. This makes it possible for the operator to receive information regardless of his technical knowledge and experience

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un vibrateur interne destiné à la vibration du béton et présentant un dispositif de mesure permettant de détecter des paramètres de service, par exemple, de mesurer le mouvement d'une aiguille vibrante (2) recevant un dispositif de production de vibrations ou bien la puissance absorbée ou le nombre de tours d'un moteur électrique associé au dispositif de production de vibrations. A cet effet, conviennent également deux capteurs d'accélération (6) qui permettent de déterminer les valeurs d'accélération de l'aiguille vibrante (2) dans le béton à soumettre à des vibrations, ce qui permet de tirer des conclusions sur les résultats de vibration. Les valeurs mesurées des capteurs d'accélération (6) et d'un dispositif de mesure de puissance sont évaluées par un circuit d'évaluation et peuvent être retransmises à un utilisateur par un affichage (9).
EP00910811A 1999-03-23 2000-03-10 Vibrateur interne dote d'un systeme de mesure Expired - Lifetime EP1165907B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19913077 1999-03-23
DE19913077A DE19913077C2 (de) 1999-03-23 1999-03-23 Innenrüttler mit Meßsystem
PCT/EP2000/002138 WO2000057000A1 (fr) 1999-03-23 2000-03-10 Vibrateur interne dote d'un systeme de mesure

Publications (2)

Publication Number Publication Date
EP1165907A1 true EP1165907A1 (fr) 2002-01-02
EP1165907B1 EP1165907B1 (fr) 2005-05-18

Family

ID=7902085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00910811A Expired - Lifetime EP1165907B1 (fr) 1999-03-23 2000-03-10 Vibrateur interne dote d'un systeme de mesure

Country Status (5)

Country Link
US (1) US20080012165A1 (fr)
EP (1) EP1165907B1 (fr)
JP (1) JP2002540323A (fr)
DE (2) DE19913077C2 (fr)
WO (1) WO2000057000A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4311640A1 (fr) 2022-07-25 2024-01-31 Wacker Neuson Produktion GmbH & Co. KG Dispositif de compactage de béton avec mesure de la progression de compactage

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JP4404494B2 (ja) * 2001-02-19 2010-01-27 株式会社奥村組 コンクリート締固め判定方法、及び装置
DE10354002B4 (de) * 2003-11-19 2009-07-30 Wacker Construction Equipment Ag Innenrüttelvorrichtung mit Drehzahlregelung
DE102006053393A1 (de) * 2006-11-10 2008-05-15 Betomax Gmbh & Co. Kg Vorrichtung zum Betonverdichten, Verfahren zum Verdichten von Beton und Produktionseinrichtung zum Herstellen von Fertigbetonbauteilen unter Verwendung mindestens eines Verdichters
DE102012002166B4 (de) * 2012-02-01 2018-01-04 Technische Universität Dresden Vorrichtung und Verfahren zur Bestimmung der Zusammensetzung von Frischbetonproben
JP5807027B2 (ja) * 2013-01-18 2015-11-10 大成ロテック株式会社 施工機械
CN103195254B (zh) * 2013-02-21 2015-11-04 中国电建集团成都勘测设计研究院有限公司 混凝土浇筑振捣坯层自动监控方法
JP6211440B2 (ja) * 2013-03-15 2017-10-11 鹿島建設株式会社 締固め状況管理システム、締固め状況管理方法
JP6026341B2 (ja) * 2013-03-29 2016-11-16 りんかい日産建設株式会社 コンクリート締固め判定装置
JP6262026B2 (ja) * 2014-03-07 2018-01-17 前田建設工業株式会社 フレッシュコンクリート締固め状態報知システム及び品質管理方法
CN103852575B (zh) * 2014-03-31 2015-05-20 重庆交通大学 沥青混凝土路面压实度连续检测方法及装置
CN104562899A (zh) * 2014-12-19 2015-04-29 中国铁道科学研究院铁道建筑研究所 连续压实测量系统及测量方法
JP6503260B2 (ja) * 2015-08-05 2019-04-17 鹿島建設株式会社 測定装置、及び締固め判定方法
CN108107190A (zh) * 2018-01-29 2018-06-01 铜陵学院 一种饱水土体局部振动液化试验装置和方法
KR102113091B1 (ko) * 2018-11-30 2020-05-20 인하대학교 산학협력단 콘크리트 압송관을 타격하는 타격 장치를 위한 구동 제어 시스템 및 그 방법
DE102019125590A1 (de) 2019-09-24 2021-03-25 Wirtgen Gmbh Überwachungsvorrichtung für einen Gleitschalungsfertiger zur Überwachung der Verdichtung von Beton und Verfahren zur Überwachung der Verdichtung von Beton während des Betriebs eines Gleitschalungsfertigers
JP6918081B2 (ja) * 2019-11-28 2021-08-11 りんかい日産建設株式会社 コンクリート締固め測定具およびコンクリート締固め測定方法
DE102022118543A1 (de) 2022-07-25 2024-01-25 Wacker Neuson Produktion GmbH & Co. KG Betonverdichtungssystem mit Rückmeldung über Verdichtungszustand
DE102022118541A1 (de) * 2022-07-25 2024-01-25 Wacker Neuson Produktion GmbH & Co. KG Verdichtungssystem mit Bestimmung des Verdichtungsfortschritts

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EP4311640A1 (fr) 2022-07-25 2024-01-31 Wacker Neuson Produktion GmbH & Co. KG Dispositif de compactage de béton avec mesure de la progression de compactage

Also Published As

Publication number Publication date
US20080012165A1 (en) 2008-01-17
DE19913077C2 (de) 2003-06-12
DE19913077A1 (de) 2000-10-19
JP2002540323A (ja) 2002-11-26
WO2000057000B1 (fr) 2000-12-21
WO2000057000A1 (fr) 2000-09-28
EP1165907B1 (fr) 2005-05-18
DE50010353D1 (de) 2005-06-23

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