EP2129846A1 - Aussenrüttler mit betriebsanzeige - Google Patents
Aussenrüttler mit betriebsanzeigeInfo
- Publication number
- EP2129846A1 EP2129846A1 EP08715841A EP08715841A EP2129846A1 EP 2129846 A1 EP2129846 A1 EP 2129846A1 EP 08715841 A EP08715841 A EP 08715841A EP 08715841 A EP08715841 A EP 08715841A EP 2129846 A1 EP2129846 A1 EP 2129846A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- power supply
- external vibrator
- vibrator according
- 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.)
- Granted
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 238000011156 evaluation Methods 0.000 claims description 18
- 238000009415 formwork Methods 0.000 claims description 15
- 230000001939 inductive effect Effects 0.000 abstract description 5
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
- the invention relates to an external vibrator for attachment to a concrete formwork.
- External vibrators are well known and are usually used on the outside of concrete formwork for the production of precast concrete parts in order to achieve a required venting and thus compaction of the still liquid concrete in the formwork by applying vibrations or shaking forces.
- 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 machine, which sets the motor shaft and thus the unbalances 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 by a motor generator, a static frequency converter and the like. ⁇ . to provide.
- FIG. 6 shows, in a schematic form, a side view of a concrete formwork 1, on which three known external vibrators 2 are mounted by way of example.
- 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 shown in Fig. 6 by way of example 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.
- External vibrators are often combined in a group, which is electrically supplied by means of sub-distributions, 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 Extra costs caused and easy to handle.
- 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 another 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 Relatiwerfur 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 can detect the relative position of current phases of different current supply lines and / or the presence of electrical current in all current supply lines required for the operation of the electric motor.
- 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, 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. at all stages, is powered. 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.
- the direction of rotation of the motor shaft can be determined by the evaluation device.
- 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 hardly requires space, it is readily possible to completely accommodate the detection device in the connection or mains plug.
- the display device can also be integrated into the connection plug, wherein optionally a signal light or LED is to be provided in the housing of the connection plug.
- 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.
- FIG. 1 shows the electrical supply of an electric motor in an external vibrator with inductively operated operating display.
- Fig. 2 shows another embodiment of the operation indicator;
- Fig. 5 shows another embodiment of the operation indicator
- FIG. 6 shows a schematic structure of a concrete formwork with three outer vibrators attached to it.
- FIGS. 1 to 5 an electric motor 3 is shown schematically in each case, together with an electrical supply line 5, in which three power supply lines 6 with the phase designation U, V, W are provided.
- FIG. 1 shows a schematic representation of the three phases U, V, W housed in the electrical supply line 5, each forming a current supply, 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 aid of the voltage serving as a display device LED 1 1 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. B. be displayed whether the electric motor 3 has a speed in the specified nominal range or outside the nominal range.
- FIG. 4 shows a further embodiment in which the current intensity in the power supply W is detected with the aid of the microprocessor 12 and compared with a predetermined nominal value or standard value. If the actual current value recorded with the aid of the coil 10 corresponds to the nominal value within permissible tolerance limits, the display device 13 can document this fact to the outside. 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. Also, the voltage required for the operation of the display device 13 is thereby provided. Thus, neither the detection device 10, 12 nor the display device 13 or the light-emitting diode 1 1 require its own power supply.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Ac Motors In General (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Push-Button Switches (AREA)
- Indicating Measured Values (AREA)
Description
Claims
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 true EP2129846A1 (de) | 2009-12-09 |
EP2129846B1 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 (de) |
EP (1) | EP2129846B1 (de) |
CN (1) | CN101668910B (de) |
AT (1) | ATE489520T1 (de) |
DE (2) | DE102007009508B3 (de) |
ES (1) | ES2354398T3 (de) |
WO (1) | WO2008104299A1 (de) |
Families Citing this family (2)
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 |
US10907366B2 (en) * | 2018-04-27 | 2021-02-02 | Mikasa Sangyo Co., Ltd. | Concrete vibrator with idling mode |
Family Cites Families (16)
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 GmbH & Co KG, 80809 München | 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 |
-
2007
- 2007-02-27 DE DE102007009508A patent/DE102007009508B3/de not_active Expired - Fee Related
-
2008
- 2008-02-18 WO PCT/EP2008/001244 patent/WO2008104299A1/de active Application Filing
- 2008-02-18 DE DE502008001894T patent/DE502008001894D1/de active Active
- 2008-02-18 ES ES08715841T patent/ES2354398T3/es active Active
- 2008-02-18 US US12/528,555 patent/US20110029264A1/en not_active Abandoned
- 2008-02-18 EP EP08715841A patent/EP2129846B1/de active Active
- 2008-02-18 CN CN2008800060043A patent/CN101668910B/zh not_active Expired - Fee Related
- 2008-02-18 AT AT08715841T patent/ATE489520T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO2008104299A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502008001894D1 (de) | 2011-01-05 |
ATE489520T1 (de) | 2010-12-15 |
CN101668910B (zh) | 2012-07-04 |
CN101668910A (zh) | 2010-03-10 |
EP2129846B1 (de) | 2010-11-24 |
US20110029264A1 (en) | 2011-02-03 |
WO2008104299A1 (de) | 2008-09-04 |
ES2354398T3 (es) | 2011-03-14 |
DE102007009508B3 (de) | 2008-06-19 |
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