EP2129846B1 - Aussenrüttler mit betriebsanzeige - Google Patents

Aussenrüttler mit betriebsanzeige Download PDF

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Publication number
EP2129846B1
EP2129846B1 EP08715841A EP08715841A EP2129846B1 EP 2129846 B1 EP2129846 B1 EP 2129846B1 EP 08715841 A EP08715841 A EP 08715841A EP 08715841 A EP08715841 A EP 08715841A EP 2129846 B1 EP2129846 B1 EP 2129846B1
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EP
European Patent Office
Prior art keywords
current
external vibrator
supply line
detection device
display device
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.)
Active
Application number
EP08715841A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2129846A1 (de
Inventor
Michael Steffen
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 Neuson SE
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Wacker Neuson SE
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Publication date
Application filed by Wacker Neuson SE filed Critical Wacker Neuson SE
Publication of EP2129846A1 publication Critical patent/EP2129846A1/de
Application granted granted Critical
Publication of EP2129846B1 publication Critical patent/EP2129846B1/de
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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
    • E04G21/063—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools
    • E04G21/065—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools acting upon the shuttering

Definitions

  • External vibrators are well known and are usually used on the outside of concrete formwork for the production of precast concrete parts to achieve by applying vibrations or vibration forces required ventilation and thus compression of the still liquid concrete in the formwork.
  • An external vibrator is usually relatively simple and has a driven by an electric motor vibration exciter, z. B. an imbalance wave on.
  • the vibration exciter and the electric motor are arranged on a carrier forming the housing, which is fastened to the concrete formwork.
  • Known external vibrators have a higher than mains frequency driven asynchronous, which sets the motor shaft and thus the imbalances in rotation and thereby generates a vibration of the entire external vibrator, which transmits via the carrier to the concrete formwork.
  • Typical external vibrators are driven with a special voltage in the range of 36 V to 250 V and a special electrical frequency between 50 Hz and 240 Hz.
  • the special frequency can be controlled via a motor generator, a static frequency converter u. ⁇ . to provide.
  • Fig. 6 shows in schematic form a side view of a concrete formwork 1, on the example of three known external vibrators 2 are attached.
  • Each external vibrator 2 has in the middle of an electric motor 3 which rotatably drives a motor shaft, not shown, on the ends of imbalance masses 4 are attached.
  • the imbalance masses 4 and the electric motor 3 are usually covered by covers and therefore not freely visible.
  • Each electric motor 3 is supplied via an electrical supply line 5 with electricity.
  • the electrical supply line 5 is in Fig. 6 exemplified by three power supply lines 6, which are intended to reproduce the three phases of a three-phase drive.
  • the Electric motor 3 and the imbalance mass 4 are housed in a housing which forms together with a support structure connected thereto a carrier 7, via which the external vibrator 2 is connected to the concrete formwork 1.
  • the external vibrators usually have to be installed in great haste on the outside of the concrete formwork.
  • Veiinrungscreme cabinets and converters are used with usually not known electrical rotation of the phases. This can lead to connection and malfunction due to loose cables, non-closed switches, defects and incorrectly mounted or contrary to a predetermined main direction rotating external vibrators.
  • These errors are hardly recognizable to the operator, since an external vibrator has no externally visible, moving parts.
  • a plurality of external vibrators must be used, whereby all external vibrators must work in the desired manner in order to achieve a sufficient work result. If an external vibrator works improperly, the work result may suffer.
  • External vibrators are often combined functionally in a group, which is supplied with the aid of sub-distributions electrically, with a central group cable sub-distribution with z.
  • B. connects a common frequency converter. This makes it impossible to monitor the operation and function of a single external vibrator.
  • the invention has for its object to provide an external vibrator with individual power indicator, the only minor
  • An external vibrator for fastening to a concrete formwork has a vibration exciter drivable by an electric motor, a carrier carrying the vibration exciter, which can be fastened to the concrete formwork, and an electrical supply line having at least one power supply to the electric motor. Furthermore, a detection device is provided for inductively detecting a current state in the power supply, and a display device for displaying an optical signal corresponding to the detected current state.
  • the inductively acting detection device With the help of the inductively acting detection device, it is possible to monitor the power supply without special structural measures. Rather, the external vibrator can be constructed in otherwise known manner.
  • the detection device can be attached later to the outside of the power supply. Depending on the definition of the display device, the current state detected by the detection device can then be visualized.
  • the current state is the presence of an electrical current (ON / OFF), the current intensity, the current frequency or the current phase of the current flowing in the current supply. Furthermore applies - as will be explained later - as a current state and the relative ratio of states in several, a common external vibrator supplying power supplies. With the help of inductive detection, it is readily possible to determine these parameters.
  • the detection device may include an evaluation device for evaluating the detected current state and for driving the display device according to the detected current state according to predetermined rules. That way indicate the presence of current, but also the current, current frequency or possibly current phase.
  • an evaluation device for evaluating the detected current state and for driving the display device according to the detected current state according to predetermined rules. That way indicate the presence of current, but also the current, current frequency or possibly current phase.
  • As a display are z. As indicator lights, LEDs, etc.
  • the supply line to the electric motor can have a plurality of power supply lines, wherein the current state in several, possibly in all of the power supply lines can be detected inductively by the detection device.
  • the evaluation device By means of the evaluation device, the respective current states can be evaluated and displayed in the form of a uniform, common optical signal by the display device.
  • the evaluation device in this way by the evaluation device, the relative position of current phases of different power supply lines and / or the presence of electric current in all required for the operation of the electric motor power supply can be seen.
  • the evaluation device can therefore first detect the current states individually and then relate them to one another. Due to the relative position of the current phases can be z. B. determine the direction of rotation of the electric motor. Likewise, it can be determined by checking the power supplies required for the operation of the electric motor, whether the electric motor sufficient, for. B. on all phases, with power. This ensures safe, proper operation of the external vibrator.
  • the evaluation device can be mapped a rule, according to which in a certain current state in a single power supply and / or in certain power states in several power supply lines a rule corresponding optical signal can be displayed via the display device.
  • a rule corresponding optical signal In the simplest case, only the switching state (ON / OFF) is detected.
  • the rotational speed of the electric motor can be determined. Due to the location of current phases of different power supply lines, the direction of rotation of the motor shaft can be determined by the evaluation device. By detecting the current intensity, an overload of the electric motor can be detected when a limit value is exceeded and optionally with the help of the display device.
  • the electrical supply or the power supply can be performed by a terminal box.
  • the detection device can then be arranged in the terminal box.
  • conventional external vibrators usually already have a terminal box from which the electrical supply goes off.
  • the terminal box is usually attached directly to the carrier or to the belonging to the carrier housing of the external vibrator.
  • the detection device can be arranged in a simple manner in or on the terminal box. Since the leads in the terminal box are easily accessible, the inductive detection device can be easily realized. In particular, coils that belong to the detection device can be easily placed on the power supply cables.
  • the electrical supply line has a connection plug and that the detection device is arranged in the connection plug. Since the detection device requires little space, it is readily possible to completely accommodate the detection device in the connection or power plug.
  • the display device can be integrated into the connector, with optionally a signal light or LED, is provided in the housing of the connector.
  • the detection device completely in the electrical supply line, d. H. to be arranged in the supply cable.
  • the detection device, the evaluation device and the display device can be supplied inductively by a current which flows through the power supply lines monitored by the detection device. In this way, it is not necessary to provide additional power to the devices. Rather, the current conducted to the electric motor of the external vibrator is sufficient to ensure the current or voltage supply of the devices via inductive excitation. Also This makes it very easy to retrofit the detection, evaluation and display devices without having to change the electrical supply of the external vibrator and without interfering with the existing system.
  • the display device may be provided in the vicinity of the detection device, but also remote therefrom.
  • the display device can be placed on the carrier in an area that is particularly visible to the operator.
  • the detection device can also be designed to detect a voltage state in the power supply or in the electrical supply.
  • the terminal voltage galvanic, capacitive, inductive or via a voltage-dependent acting coupling element such. B. a light source, optocouplers, etc. are detected.
  • the terminal voltage can be detected without contact, that is without direct contact with the conductors.
  • the additional detection of the voltage makes it possible to determine indicators or limit values for the power or the impedance.
  • the evaluation device can additionally be designed to evaluate the detected voltage state and to drive the display device in accordance with the detected voltage state.
  • the evaluation of the voltage state however, always takes place in connection with an evaluation of the current state.
  • the voltage thus determined and thus also the power can be displayed with the aid of the display device.
  • an electric motor 3 is shown schematically, together with an electrical supply line 5, in which three power supply lines 6 are provided with the phase name U, V, W.
  • Fig. 1 shows a schematic representation of the accommodated in the electrical supply line 5, each one power supply forming three phases U, V, W, which are fed to the electric motor 3.
  • the power supply W is comprised by a coil 10 belonging to a detection device, by means of which a voltage can be inductively generated. With the help of the voltage serving as a display device LED 11 is operated.
  • the detection device may have, in addition to the coil 10, further, in particular electronic components for operating and controlling the light-emitting diode 11. In this way, it can be represented very simply that the power supply W is traversed by an electric current. The same can of course also for the power supply U and V realize.
  • Fig. 2 shows a simplified representation of another embodiment.
  • the drive frequency for the electric motor 3 can also be determined via the frequency of the phase in the power supply W and displayed via a display device 13.
  • the display device 13 may likewise be one or more light-emitting diodes 11.
  • the display device 13 can be operated upon reaching a predetermined nominal frequency. In this way, z. Example, whether the electric motor 3 has a speed in the specified nominal range or outside the nominal range.
  • Fig. 3 shows another embodiment in which two power supply lines, namely the power supply lines U and W by means of coils 10 and a microprocessor 12 are monitored.
  • the coil 10 and the microprocessor 12 form the detection device. It is thus not only possible to detect the presence of an electric current in the two power supply lines U, W.
  • the motor phases in the power supply lines U, W can also be detected and set in temporal relation to each other. Due to the ratio of the individual phases, the direction of rotation of the motor shaft in the electric motor 3 can be determined. Accordingly, the display device 13 can be operated to z. B. the direction of rotation of the motor shaft or the correct direction of rotation of the motor shaft to the outside display.
  • Fig. 4 shows a further embodiment in which detected by means of the microprocessor 12, the current in the power supply W and compared with a predetermined nominal or default value. If the actual current value detected with the aid of the coil 10 corresponds to the nominal value within permissible tolerance limits, the display device 13 can document this situation externally. Likewise, however, the display device 13 can also indicate an impermissible deviation. For this purpose, z. B. a belonging to the display device 13 LED can be operated flashing. The operator is thereby informed that the current load in the power supply W is too large or too small. Likewise, an overload or fault indication can be realized in this way.
  • Fig. 5 In turn, another embodiment is shown in which the presence of all motor phases U, V, W is detected by means of three coils 10.
  • the microprocessor 12 evaluates the signals from the coils 10 and can determine in this way that all power supply lines U, V, W actually supply power. A corresponding signal can then be output via the display device 13.
  • the voltage supply of the detection device so the coil 10 and the microprocessor 12 by means of the current which is induced in the coil 10 takes place.
  • the voltage required for the operation of the display device 13 is thereby provided.
  • neither the detection device 10, 12 nor the display device 13 or the light emitting diode 11 need their own power supply.
  • the operator of the external vibrator receives in the simplest case, the display of readiness for operation and thus a simple control of the function of the external vibrator.
  • an indication of the direction of rotation of the external vibrator and the display of possible device and power supply errors can also be displayed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Control Of Electric Motors In General (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Push-Button Switches (AREA)
  • Indicating Measured Values (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Control Of Ac Motors In General (AREA)
EP08715841A 2007-02-27 2008-02-18 Aussenrüttler mit betriebsanzeige Active EP2129846B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007009508A DE102007009508B3 (de) 2007-02-27 2007-02-27 Außenrüttler mit Betriebsanzeige
PCT/EP2008/001244 WO2008104299A1 (de) 2007-02-27 2008-02-18 Aussenrüttler mit betriebsanzeige

Publications (2)

Publication Number Publication Date
EP2129846A1 EP2129846A1 (de) 2009-12-09
EP2129846B1 true EP2129846B1 (de) 2010-11-24

Family

ID=39365660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08715841A Active EP2129846B1 (de) 2007-02-27 2008-02-18 Aussenrüttler mit betriebsanzeige

Country Status (7)

Country Link
US (1) US20110029264A1 (zh)
EP (1) EP2129846B1 (zh)
CN (1) CN101668910B (zh)
AT (1) ATE489520T1 (zh)
DE (2) DE102007009508B3 (zh)
ES (1) ES2354398T3 (zh)
WO (1) WO2008104299A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008032483B3 (de) * 2008-07-10 2009-11-05 Wacker Neuson Se Außenrüttler mit einer außerhalb des Rüttlergehäuses ablesbaren Anzeige
WO2019207748A1 (ja) * 2018-04-27 2019-10-31 三笠産業株式会社 アイドリング・モード付きコンクリートバイブレータ

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866480A (en) * 1972-06-02 1975-02-18 Martin Concrete Eng Co Orbital vibrator
DE4218832A1 (de) * 1992-06-09 1993-12-16 Bosch Gmbh Robert Verfahren zum Erkennen des Ausfalls einer Wechselspannung
FR2715424B1 (fr) * 1994-01-21 1996-04-12 Quille Entreprise Procédé et dispositif pour contrôler la mise en Óoeuvre du béton dans un train de banches.
CN2258278Y (zh) * 1996-07-10 1997-07-23 孙玮 非接触式直流电流测试仪
DE19741413C2 (de) * 1997-05-05 1999-09-23 Wacker Werke Kg Vorrichtung zum Erzeugen gerichteter Schwingungen
DE19811344C2 (de) * 1998-03-16 2002-06-27 Wacker Werke Kg Betonverdichtungsanordnung mit Schwingungssensor und Steuerung
CN1238459A (zh) * 1998-06-10 1999-12-15 甘肃省电力公司 电磁感应电流变换器测量超高压输电电流的新装置
US6445188B1 (en) * 1999-04-27 2002-09-03 Tony Lutz Intelligent, self-monitoring AC power plug
CN2425132Y (zh) * 2000-04-29 2001-03-28 河南省远东起重建筑机械有限公司 快装附着式振动器
DE20011938U1 (de) * 2000-07-10 2000-09-21 Wacker Werke Kg Aussenrüttelvorrichtung
CN2460660Y (zh) * 2001-01-17 2001-11-21 徐达 一种外部式振动器
US6671635B1 (en) * 2001-02-23 2003-12-30 Power Measurement Ltd. Systems for improved monitoring accuracy of intelligent electronic devices
JP3605576B2 (ja) * 2001-04-26 2004-12-22 エクセン株式会社 コンクリートバイブレータの有効運転管理装置
DE10124145C1 (de) * 2001-05-17 2002-08-14 Wacker Werke Kg Innenrüttler zum Verdichten von Beton
CN2479510Y (zh) * 2001-05-24 2002-02-27 卢景华 一种电流指示器
DE102005016720A1 (de) * 2005-04-11 2006-10-12 Siemens Ag Spannungsamplitudenunabhängiges Netzüberwachungsgerät zur Diagnose von Phasenausfällen in Mehrphasenversorgungssystemen

Also Published As

Publication number Publication date
ES2354398T3 (es) 2011-03-14
CN101668910A (zh) 2010-03-10
EP2129846A1 (de) 2009-12-09
US20110029264A1 (en) 2011-02-03
WO2008104299A1 (de) 2008-09-04
DE502008001894D1 (de) 2011-01-05
CN101668910B (zh) 2012-07-04
DE102007009508B3 (de) 2008-06-19
ATE489520T1 (de) 2010-12-15

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