EP0964116A1 - Aiguille vibrante alimentée par un transformateur - Google Patents

Aiguille vibrante alimentée par un transformateur Download PDF

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Publication number
EP0964116A1
EP0964116A1 EP99830335A EP99830335A EP0964116A1 EP 0964116 A1 EP0964116 A1 EP 0964116A1 EP 99830335 A EP99830335 A EP 99830335A EP 99830335 A EP99830335 A EP 99830335A EP 0964116 A1 EP0964116 A1 EP 0964116A1
Authority
EP
European Patent Office
Prior art keywords
transformer
electromechanical
immersion vibrator
vibrating needle
electrostatic
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.)
Withdrawn
Application number
EP99830335A
Other languages
German (de)
English (en)
Inventor
Saverio Grande
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.)
Sime SpA
Original Assignee
Sime SpA
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 Sime SpA filed Critical Sime SpA
Publication of EP0964116A1 publication Critical patent/EP0964116A1/fr
Withdrawn legal-status Critical Current

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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
    • E04G21/08—Internal vibrators, e.g. needle vibrators

Definitions

  • the invention relates to an immersion vibrator according to the preamble of claim 1.
  • the conventional frequency controls for asynchronous motors in a range up to 10 kW operate with impulse width modulation.
  • a processor compares the measured sinusoidal phase current with sine data stored in a memory.
  • the carrier frequency, in which the transistor modules are driven, is much higher than 2 kHz.
  • No impulse width modulation is carried out with motors having a very high performance and voltage range, and a sinusoidal voltage in the multilevel operation is obtained. Direct current sources at different levels are therefore connected to the motor phases.
  • Object of the invention which is outside the state of the art, is the improvement of an immersion vibrator according to the above state of the art in order to allow its simple utilization at building sites.
  • Reference A indicates the plug-in electric vibrating unit, which comprises a vibrating cylinder 2 with electric motor and unbalanced flywheel. The latter can have various sizes. Vibrating unit A ends with a rubber tip 1. The opposite extremity of vibrating unit A ends with a member 4 of an electromagnetic plug C, so that the coupling member 4 is connected with vibrating cylinder 2 through a protective sleeve 3. Protective sleeve 3 can be provided with various lengths.
  • An electrostatic plug-in driving unit is indicated with reference B. It comprises a low frequency converter 6, which is preferably provided as an interchangeable unit and which is arranged in an aluminum housing 7 consisting of two parts. Converter 6 is operated by an on-off switch 8.
  • a cable inlet 11 with cable and plug is connected to driving unit B for electrical supply.
  • Driving unit B comprises a threaded member 5 of the electromechanical coupling C.
  • vibrating unit A can be separably connected to driving unit B through electromechanical plug C.
  • the electrical immersion vibrator for concrete thickening comprises the electric vibrating unit A and electrostatic transformer B.
  • the electric vibrating unit A comprises a three-phases asynchronous squirrel cage motor 2 with eccentric flywheel, supply cable, protective sleeve 3 and electromechanical plug 4 for the connection to the transformer unit.
  • Electrostatic transformer B comprises an inverter from a single-phase input to a three-phases output. Transformer B is also provided with an integrated switch 8 and a supply cable with plug 11, as well as the electromechanical socket 5 for the electric vibrating needle.
  • the present motor control works according to the principle of transformers for high and very high power ranges. Therefore, a continuous voltage is modulated in a first stage at different levels and then converted at a low frequency.
  • the output transistors work at the motor nominal frequency, that is 200 Hz, so that only few electromagnetic compatibility problems occur.
  • the first stage is advantageous since it quickly recognizes a possible short circuit or an electric breakdown, and no indefinite working states may occur. Furthermore, the first stage switches off in case of an electric breakdown and transformer 6 has to be started up again, after its reconnection with the needle.
  • Transformer 6 can thus be used with different kinds of needles A.
  • the user has always needed to use different kinds of needles, having different sizes and different sleeve lengths according to the reinforcement type, to the concrete depth, and so on.
  • the present solution allows the user to use different kinds of vibrating needles A with only one transformer B.
  • An inexpensive and customizable solution is obtained, in which the immersion vibrator can be provided as a portable version or as a trail transformer, which may be coupled with sleeves having different lengths.
  • Transformer B itself can be adapted to different vibrating needles A having different performances and sleeve lengths.
  • the electromechanical plug-in coupling C is codified, so that transformer B can identify and automatically fit vibrating needle A.
  • the replacement of a malfunctioning vibrating needle A or transformer B can be carried out by the user himself.
  • the transformer is provided with an integrated security current switch for malfunctions. Thanks to thermometric probes, a thermal protection of transformer B and vibrating needle A is ensured.

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)
EP99830335A 1998-06-09 1999-05-31 Aiguille vibrante alimentée par un transformateur Withdrawn EP0964116A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH124798 1998-06-09
CH124798A CH689598A5 (de) 1998-06-09 1998-06-09 Von einem Umformer gespeister Innenrüttler

Publications (1)

Publication Number Publication Date
EP0964116A1 true EP0964116A1 (fr) 1999-12-15

Family

ID=4205931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99830335A Withdrawn EP0964116A1 (fr) 1998-06-09 1999-05-31 Aiguille vibrante alimentée par un transformateur

Country Status (2)

Country Link
EP (1) EP0964116A1 (fr)
CH (1) CH689598A5 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2243124A1 (es) * 2003-12-30 2005-11-16 Hervisa, S.A. Vibrador para el compactado de hormigon.
US7385315B2 (en) 2000-07-07 2008-06-10 Wacker Construction Equipment Ag Frequency converter for an immersion vibrator

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10101277B4 (de) * 2001-01-12 2006-11-02 Wacker Construction Equipment Ag Hochfrequenz-Innenrüttler mit gekühltem elektronischen Frequenzumformer
IT1403527B1 (it) * 2011-01-24 2013-10-31 Wamgroup Spa Sistema vibratore per calcestruzzo
DE102015105861A1 (de) * 2015-04-17 2016-10-20 Manfred Laier Vorrichtung zum Verdichten eines Werkstoffes
DE102018118558A1 (de) * 2018-07-31 2020-02-06 Wacker Neuson Produktion GmbH & Co. KG Tragvorrichtung mit einem Energiesystem
CN218715211U (zh) * 2019-11-20 2023-03-24 米沃奇电动工具公司 混凝土振动器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180625A (en) * 1963-07-23 1965-04-27 Wyco Tool Co Power transmission means for concrete vibrator
US3782693A (en) * 1971-03-27 1974-01-01 Bosch Gmbh Robert Vibratory compactor
EP0604723A1 (fr) 1992-12-30 1994-07-06 WACKER-WERKE GmbH & Co. KG Aiguille vibrante alimentée par un transformateur
FR2761391A1 (fr) * 1997-03-26 1998-10-02 Electronique Au Service Du Bet Agencement de mise en vibration de beton sur un chantier
DE19824372A1 (de) * 1997-11-11 1999-05-12 Bomag Gmbh Vibrator zur Beton-Verdichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180625A (en) * 1963-07-23 1965-04-27 Wyco Tool Co Power transmission means for concrete vibrator
US3782693A (en) * 1971-03-27 1974-01-01 Bosch Gmbh Robert Vibratory compactor
EP0604723A1 (fr) 1992-12-30 1994-07-06 WACKER-WERKE GmbH & Co. KG Aiguille vibrante alimentée par un transformateur
FR2761391A1 (fr) * 1997-03-26 1998-10-02 Electronique Au Service Du Bet Agencement de mise en vibration de beton sur un chantier
DE19824372A1 (de) * 1997-11-11 1999-05-12 Bomag Gmbh Vibrator zur Beton-Verdichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7385315B2 (en) 2000-07-07 2008-06-10 Wacker Construction Equipment Ag Frequency converter for an immersion vibrator
US7498691B2 (en) * 2000-07-07 2009-03-03 Wacker Construction Equipment Ag Frequency converter for an immersion vibrator
ES2243124A1 (es) * 2003-12-30 2005-11-16 Hervisa, S.A. Vibrador para el compactado de hormigon.

Also Published As

Publication number Publication date
CH689598A5 (de) 1999-06-30

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