EP0945188A2 - Appareil vibrant à masses rotatives non-équilibrées pour une machine de moulage de béton - Google Patents

Appareil vibrant à masses rotatives non-équilibrées pour une machine de moulage de béton Download PDF

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Publication number
EP0945188A2
EP0945188A2 EP99104739A EP99104739A EP0945188A2 EP 0945188 A2 EP0945188 A2 EP 0945188A2 EP 99104739 A EP99104739 A EP 99104739A EP 99104739 A EP99104739 A EP 99104739A EP 0945188 A2 EP0945188 A2 EP 0945188A2
Authority
EP
European Patent Office
Prior art keywords
shafts
unbalanced shafts
unbalance
shaker according
unbalanced
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Withdrawn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
EP99104739A
Other languages
German (de)
English (en)
Other versions
EP0945188A3 (fr
Inventor
Olga Kossmann
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.)
Masa GmbH
Original Assignee
Masa GmbH
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 Masa GmbH filed Critical Masa GmbH
Publication of EP0945188A2 publication Critical patent/EP0945188A2/fr
Publication of EP0945188A3 publication Critical patent/EP0945188A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/162—Making use of masses with adjustable amount of eccentricity

Definitions

  • the invention relates to an unbalance shaker for compressing Concrete elements during their manufacture, with a vibrating table the unbalanced shafts arranged with the vibrating table and with these unbalanced shafts assigned to their drive electric motors, the one Device for controlling and / or regulating the speed and / or the relative phase position of the unbalanced shafts.
  • Such a device is known for example from DE-U-297 12 242.
  • a disadvantage of this known device is that asynchronous machines react relatively sluggishly to corresponding control or regulating signals. But since there is already a slight angular offset in the unbalanced shafts in their Neutral position "can lead to an undesirable vibration of the vibrating table, is considered a disadvantage here.
  • DE-A-43 17 351 is also a comparable vibrating device known. There are positions to detect the unbalance to each other have provided incremental encoders, but a very limited one Have resolution so that the system is also limited Has synchronism properties.
  • the object of the present invention is therefore an unbalance shaker specify where the most precise regulation can be achieved, whereby Device and control should have a high dynamic and achieve a high level of control.
  • the electric motors of the device are designed as servomotors having motor control electronics and the device for controlling and / or regulating the speed and / or the relative phase position of the unbalanced shafts Sine-cosine encoder contains that determine the angular position and speed of the unbalanced shafts.
  • the advantage of this invention is that the servo motors are one have higher dynamics than the previously used asynchronous machines. Furthermore, servomotors have the advantage of being essential to be able to deliver higher power than the asynchronous machines same size, so that existing constructions more powerful can be executed. It also includes the adjustment movements Peak load capacity of servomotors only required at short notice cheaper.
  • Sine-cosine encoder are also available with a resolution that is significantly higher than the usual incremental encoders. You get such for demanding control tasks Sine-cosine encoder with a resolution of over 65,000 inc / rev. Even the smallest control deviations can be detected and immediately compensated for due to the good dynamics of the servo motors.
  • Sine-cosine encoders determine the angular position and the speed of the shafts of the electric motors and to connect these shafts to the unbalanced shafts with a rigid transmission ratio.
  • the electric motors can be separated from the vibrating table, for example by means of cardan shafts, so that they themselves are not exposed to vibrations and ultimately also Sine-cosine encoder are exposed to less mechanical stress.
  • the transmission ratio between the electric motor is preferred and unbalance shaft 1: 1, because without further conversion from the Angular position of the motor shaft towards the position of the unbalance shaft is close.
  • the special mechanical connection via toothed belt has the Advantage that the two unbalanced shafts of a regulator specification can optimally follow without, for example, slippage occurring, as with V-belts, or play, as occurs with gear drives or the like.
  • Such a slip or game has an effect disadvantageous on the synchronism of the two coupled waves from what is particularly noticeable in the operating point in which all Centrifugal forces should be released to the vibration table at rest to have. At this operating point, even the smallest deviations occur noticeable from the synchronism of the coupled waves as they set the vibrating table in slight vibrations.
  • Each engine control electronics can have its own evaluation unit for the one assigned to it Sine-cosine encoder which forms the actual values for the individual controllers. This has the advantage that the computing power remains reserved for the actual regulation.
  • FIG 1 is a longitudinal section through an equipped according to the invention Shaker shown.
  • the unbalanced shafts are via PTO shafts 4 connected to driven wheels 5.
  • PTO shafts 4 connected to driven wheels 5.
  • these driven wheels 5 are fixed to the machine frame 6 attached so that the drive shafts 4 the connection between form the rigid and the movable part of the device.
  • the driven wheels 5 are connected to electric motors 8 via toothed belts 7, which are permanent magnet synchronous motors acts, which are commonly referred to as servo motors.
  • the Electric motors 8 are on the corresponding brackets 9 to the the driven wheels 5 supporting carrier plates 10 attached that the Toothed belts 7 are tensioned with adjustment of the brackets 9.
  • Such a carrier plate 10 is in the front view in FIG shown.
  • the servomotor 8 arranged below, the drives the corresponding driven wheels 5 via a toothed belt 7. It is caused by two pulleys 11 that the two Output wheels 5 rotate in opposite directions.
  • the toothed belt 7 thereby ensure that between the two driven wheels no slip or play occurs. This ensures that, as in the figures 4 and 5 can be seen, two lying side by side in the horizontal direction Unbalance shafts rotate in opposite directions.
  • the angle is changed by changing the speed of a motor is briefly increased or decreased and it is reached after the angular offset again at the same speed as the other motor.
  • the waves rotate in the direction indicated by arrows Direction.
  • Sine-cosine encoder 12 are provided, which have a resolution of over 65500 Ink / revolution. As can be seen in FIG. 6, these are not attached to the unbalanced shafts on the vibrating table 1 but to the motor shafts of the servomotors 8.
  • the drive wheels 13 which are mounted on the motor shafts, the have the same size as the driven wheels 5, via which the unbalanced shafts driven, it is achieved that between the motor shaft and Unbalanced shaft ensures a rigid transmission ratio of 1: 1 and thus from the angular position and the speed of the motor shaft immediately concluded on the angular position and speed of the unbalanced shafts can be.
  • the motors are master (8a) and slave (8b) coupled.
  • the control and regulation of the motors is fully digitized with a sampling time in the order of approx. 60 ⁇ sec. In order to is an angle difference of far less than a degree between the individual motors and thus between the unbalanced shafts.
  • the position controller which realizes the synchronization of the slave drive with the master drive, is already integrated in the control electronics for motor control, since short signal transit times between the position controller and the speed controller are possible. Even the evaluation of the individual Sine-cosine encoder is integrated accordingly with each drive, so that the computing power required for the actual control does not have to be branched off.
  • control electronics of the master or Slave drive 8a or 8b upstream of a controller 14 which specifies the setpoints, that is, on the one hand, the speed setpoint 15 for the master drive or the corresponding angle setpoint 16 to the Slave drive.
  • Each servo motor has its own control and rotor angle formed by an encoder evaluation 17 from that of the sine-cosine encoder delivered encoder signals 18.
  • the master or master drive 8a becomes the speed setpoint 15 supplied by the controller 14, which is directly on the speed controller 19 acts.
  • the slave or slave drive gets 8b from the higher-order controller 14 the setpoint of the angular offset 16 specified, which acts on the position controller 22.
  • the position controller 22 continues to receive position information 23 of the master drive.
  • the here Change of angle and speed can be done simultaneously. Is too the direction of rotation is reversible and the phase angle can be either forward or forward lag, which has useful effects in practice to let.
  • the achievable adjustment time to complete the phase position To adjust 180 ° is approximately 125 milliseconds, the times of the Forward and backward but can also be changed as desired.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP99104739A 1998-03-24 1999-03-10 Appareil vibrant à masses rotatives non-équilibrées pour une machine de moulage de béton Withdrawn EP0945188A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19812986A DE19812986C1 (de) 1998-03-24 1998-03-24 Unwuchtrüttler für Steinformmaschinen
DE19812986 1998-03-24

Publications (2)

Publication Number Publication Date
EP0945188A2 true EP0945188A2 (fr) 1999-09-29
EP0945188A3 EP0945188A3 (fr) 2002-04-17

Family

ID=7862175

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Application Number Title Priority Date Filing Date
EP99104739A Withdrawn EP0945188A3 (fr) 1998-03-24 1999-03-10 Appareil vibrant à masses rotatives non-équilibrées pour une machine de moulage de béton

Country Status (4)

Country Link
US (1) US6213630B1 (fr)
EP (1) EP0945188A3 (fr)
CA (1) CA2266762A1 (fr)
DE (1) DE19812986C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002043935A2 (fr) * 2000-11-30 2002-06-06 Wacker-Werke Gmbh & Co. Kg Dispositif de compactage de beton avec vibreurs externes radio-commandes
EP3456879A1 (fr) * 2017-09-13 2019-03-20 Wacker Neuson Produktion GmbH & Co. KG Dispositif de compactage du sol

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4289579B2 (ja) * 2000-07-05 2009-07-01 新東工業株式会社 鋳物砂充填用振動装置
US7188993B1 (en) * 2003-01-27 2007-03-13 Harold W Howe Apparatus and method for resonant-vibratory mixing
ITFI20060088A1 (it) * 2006-04-03 2007-10-04 Form Impianti S R L Piano vibrante per vibropresse
WO2008088321A1 (fr) 2007-01-12 2008-07-24 Howe Harold W Malaxage vibrant résonant
US7816415B2 (en) * 2007-07-17 2010-10-19 Inentec Llc Method and apparatus for synthesizing hydrocarbons using sonic mixing and solid catalysts
US8905624B1 (en) 2009-08-20 2014-12-09 Harold W. Howe Control of vibratory/oscillatory mixers
US10767725B2 (en) * 2018-07-25 2020-09-08 Denso International America, Inc. Amplitude-modulating vibrator for predictive maintenance modeling
WO2022101800A1 (fr) * 2020-11-10 2022-05-19 Oli S.P.A. Ensemble moteur-vibreur pour machine vibrante

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092014A1 (fr) * 1982-04-21 1983-10-26 Losenhausen Maschinenbau AG& Co Kommanditgesellschaft Dispositif de réglage pour générateur de vibrations à masses non équilibrées
US5355732A (en) * 1991-05-22 1994-10-18 Hess Maschinenfabrik Gmbh & Co. Kg Vibrating table with driven unbalanced shafts
DE4317351A1 (de) * 1993-05-25 1994-12-01 Omag Maschinenbau Ag Betonform-Rüttelmaschine, insbesondere Kernrüttler
US5903077A (en) * 1995-09-21 1999-05-11 Moog Inc. Modular vibratory force generator, and method of operating same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407013A1 (de) * 1994-03-03 1995-09-07 Gedib Ingbuero Innovation Verstelleinrichtung mit Regeleinrichtung für einen Unwucht-Richtschwinger mit verstellbarem Fliehmoment und Verfahren für den Betrieb der Regeleinrichtung
DE29712242U1 (de) * 1997-07-11 1997-09-18 Lonz Industrieautomation Gmbh Unwuchtrüttler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092014A1 (fr) * 1982-04-21 1983-10-26 Losenhausen Maschinenbau AG& Co Kommanditgesellschaft Dispositif de réglage pour générateur de vibrations à masses non équilibrées
US5355732A (en) * 1991-05-22 1994-10-18 Hess Maschinenfabrik Gmbh & Co. Kg Vibrating table with driven unbalanced shafts
DE4317351A1 (de) * 1993-05-25 1994-12-01 Omag Maschinenbau Ag Betonform-Rüttelmaschine, insbesondere Kernrüttler
US5903077A (en) * 1995-09-21 1999-05-11 Moog Inc. Modular vibratory force generator, and method of operating same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002043935A2 (fr) * 2000-11-30 2002-06-06 Wacker-Werke Gmbh & Co. Kg Dispositif de compactage de beton avec vibreurs externes radio-commandes
WO2002043935A3 (fr) * 2000-11-30 2002-08-08 Wacker Werke Kg Dispositif de compactage de beton avec vibreurs externes radio-commandes
EP3456879A1 (fr) * 2017-09-13 2019-03-20 Wacker Neuson Produktion GmbH & Co. KG Dispositif de compactage du sol

Also Published As

Publication number Publication date
EP0945188A3 (fr) 2002-04-17
DE19812986C1 (de) 1999-11-11
US6213630B1 (en) 2001-04-10
CA2266762A1 (fr) 1999-09-24

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