EP0197136A1 - Dispositif de commande de systemes oscillants a entrainement magnetique de la masse - Google Patents

Dispositif de commande de systemes oscillants a entrainement magnetique de la masse

Info

Publication number
EP0197136A1
EP0197136A1 EP19850905322 EP85905322A EP0197136A1 EP 0197136 A1 EP0197136 A1 EP 0197136A1 EP 19850905322 EP19850905322 EP 19850905322 EP 85905322 A EP85905322 A EP 85905322A EP 0197136 A1 EP0197136 A1 EP 0197136A1
Authority
EP
European Patent Office
Prior art keywords
voltage
frequency
excitation
oscillating
conveyor
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Withdrawn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
EP19850905322
Other languages
German (de)
English (en)
Inventor
Bruno Pross
Arthur Kobler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0197136A1 publication Critical patent/EP0197136A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G27/00—Jigging conveyors
    • B65G27/10—Applications of devices for generating or transmitting jigging movements
    • B65G27/32—Applications of devices for generating or transmitting jigging movements with means for controlling direction, frequency or amplitude of vibration or shaking movement

Definitions

  • the invention relates to a device for controlling of magne ⁇ tically driven mass oscillating systems, such as conveyours or the like, in which the resonance frequencies are diffe ⁇ rent and moreover can vary in any way during operation.
  • So-called magnetic oscillating conveyors are very often used in industry for moving of bulk materials or small pie ⁇ ces. These devices consist of a conveyor part, which is designed as a conveyor trough, conveyor pipe or conveyor chute, in addition to a countermass (stator). The conveyor part and the countermass are connected with one another by spring elements. These devices are designated in the litera ⁇ ture by the full name of so-called magnetically driven 2-mass oscillating systems.
  • the spring elements in each case are mounted at an angle opposite a stationary base, i.e., opposite the contermass, and the 2-mass system oscillates with the aid of an electro ⁇ magnet, i.e., a magnet armature and magnet coil, then the pieces on the conveyor chute that are to be conveyed begin to move in a fixed direction, corresponding to a so-called projectile motion.
  • an electro ⁇ magnet i.e., a magnet armature and magnet coil
  • the natural frequency of a 2-mass oscillating system is calculated from
  • Useful weight table weight + conveyor attachment + the weight of the partly coupled material to be conveyed. (formula 3)
  • the object of the invention is to eliminate said disadvanta- ges with a conveyor of the type initially mentioned, so that as a rule resonance adjustment of the mass oscillating system can be dispensed with from now on, since this invention ad ⁇ justs to the resonance with its excitation frequency.
  • the excitation frequency can be adjusted to the respective resonance frequency and consequen ⁇ tly all problems relating to changes of masses, changes of spring constants, etc. can be avoided.
  • the necessary excita ⁇ tion energy in this case is only a fraction of the previously necessary excitation energy, since now only the damping of themechanical resonant circuit must be overcome.
  • the oscilla ⁇ tion amplitude also can be controlled in a simple way with the same measuring device by controlling the excitation energy.
  • Figure 3 shows the design of an embodiment of the oscilla ⁇ ting conveyor according to the invention
  • Figure 4 diagrammatically shows the design of the electric control and power circuit.
  • a conventional magnet oscillating conveyor is shown in figure 1.
  • 1 indicates the conveyor chute
  • the table and con ⁇ veyor chute together form the useful mass or useful weight.
  • the magnet armature is indicated by 4 and the magnet coil by 5, while the countermass or stator is indicated by 6.
  • the device rests on decoupling spring elements, especially on rubber feet 7.
  • Spring elements 6 form, with the base of coun ⁇ termass 6 a spring angle of incidence 8, or ° ⁇ , while 9 indicates the projectile path of a small piece.
  • Figure 2 shows the relation between the oscillation ampli ⁇ tude and the ration of the driving frequency to the resonance frequency in the case of different dampings.
  • the letter R indicates the resonance shift as a result of a damping change and D + G the damping and resonance influence by loading of the chute;
  • Adjustment of the natural frequency is obtained by changing of the spring constants or changing of the weights, above all the useful weight.
  • Figure 3 corresponds to the fundamental design of a oscilla- tion conveyor of conventional construction (according to fig. l), which according to the invention was supplemented with a phase and amplitude measuring system.
  • the measuring system consists of a measuring coil 11 and a permanent magnet 10. If the trough oscillates perfectly, the voltage produced in the measuring coil is sinusoidal.
  • the crossover of the measuring voltage coincides with the maximum deviation of the trough.
  • - Power bridge circuit 16 if both transistors Tl and T2 be ⁇ come simultaneously conducting, the voltage from Cl is applied to the excitation coil of the oscillating conveyor, a current beings to flow. If the transistors are again opened and thus further rise of the coil current is interrupted, the polari ⁇ ty on the excitation coil immediately changes. Thus, diodes D1-D2 become conducting and recharge the decreasing coil cur ⁇ rent in energy storage Cl; - Permanent magnet 17 fastened to the conveyor trough;
  • phase discriminator 19 the transient excitation frequen- cy and the measuring frequency are fed to it. A positive or negative voltage is formed on its output, depending on whe ⁇ ther the excitation frequency is greater or smaller than the resonance frequency of the oscillating conveyor;
  • phase integral controller 20 it changes its output volta- ge in the correct action direction until the phase discrimi ⁇ nator no longer supplies any correction voltage;
  • - Measuring rectifier 23 from the measuring ac voltage it makes a dc voltage that is proportional to the amplitude of the conveyor troughj
  • - Amplitude controller 23 it compares the set voltage on the set-point adjuster with that from the measuring rectifi ⁇ er and with its output voltage drives the pulse-duration modulator;
  • Pulse-duration modulator 24 it receives the correct fre ⁇ quency and phase position from the voltage-controlled oscil ⁇ lator and the information on the necessary excitation energy from the amplitude controller and makes therefrom a through- connected pulse at the correct moment and in the correct length fro transistors Tl and T2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigging Conveyors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Particle Accelerators (AREA)

Abstract

Le dispositif qui peut s'appliquer par exemple à une transporteuse de matériaux en vrac, à de petites pièces ou autres, comprend un premier moyen consistant en un dispositif (5, 10) qui peut mesurer la fréquence de résonance, la phase et l'amplitude des oscillations du système d'oscillation de masse, un second moyen consistant en un dispositif de commande qui ajuste indépendamment la fréquence d'excitation sur la fréquence naturelle du système d'oscillation de masse et fournit l'énergie d'excitation au moment optimal et en quantité nécessaire à l'entraînement magnétique (5, 4) pour amener le système à l'amplitude d'oscillation désirée avec un minimum d'énergie. En conséquence, il est dorénavant possible de se passer d'un ajustement de la résonance du système d'oscillation de masse étant donné que le dispositif s'ajuste indépendamment sur la résonance avec une fréquence d'excitation.
EP19850905322 1984-10-05 1985-09-17 Dispositif de commande de systemes oscillants a entrainement magnetique de la masse Withdrawn EP0197136A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4827/84 1984-10-05
CH482784A CH666359A5 (de) 1984-10-05 1984-10-05 Vorrichtung zur steuerung von magnetisch angetriebenen massenschwingsystemen.

Publications (1)

Publication Number Publication Date
EP0197136A1 true EP0197136A1 (fr) 1986-10-15

Family

ID=4283235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850905322 Withdrawn EP0197136A1 (fr) 1984-10-05 1985-09-17 Dispositif de commande de systemes oscillants a entrainement magnetique de la masse

Country Status (4)

Country Link
EP (1) EP0197136A1 (fr)
AU (1) AU4868285A (fr)
CH (1) CH666359A5 (fr)
WO (1) WO1986002058A1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3644811A1 (de) * 1986-12-31 1988-07-14 Karl Bergmann Gmbh Dipl Ing Schwingfoerderer
DE3813387C3 (de) * 1988-04-21 1995-06-29 Licentia Gmbh Schwingfördergerät mit magnetisch angetriebenem Zweimassensystem
US5074403A (en) * 1989-05-08 1991-12-24 K-Tron Technologies, Inc. Apparatus and method for two loop control of vibratory material feeders
EP0402495B1 (fr) * 1989-06-13 1992-12-23 Licentia Patent-Verwaltungs-GmbH Procédé et dispositif pour exploiter un transporteur à vibrations à entraînement magnétique
ES2017285A6 (es) * 1989-10-06 1991-01-16 Consejo Superior Investigacion Equipo electroacustico para la generacion de altas intensidades sonicas y ultrasonicas en gases e interfases.
US5299175A (en) * 1989-10-06 1994-03-29 Consejo Superior De Investigaciones Cientificas Electroacoustic unit for generating high sonic and ultra-sonic intensities in gases and interphases
GB9008687D0 (en) * 1990-04-18 1990-06-13 Wright Machinery Co Drive and monitoring system for a vibratory conveyor
DE4012902C1 (fr) * 1990-04-23 1991-04-18 F. Kurt Retsch Gmbh & Co Kg, 5657 Haan, De
GB9112973D0 (en) * 1991-06-15 1991-08-07 Marriott Paul A Improvements to vibrating materials handling and processing devices
DE4123776C2 (de) * 1991-07-18 1995-03-30 Schindler Peter Vibrations-Linearförderer
US5158170A (en) * 1991-11-22 1992-10-27 Resinoid Engineering Corporation Automatic vibrator control
DE4142398C2 (de) * 1991-12-20 1995-05-04 Wolff Reo Boris Von Gmbh Steuereinrichtung für einen in der Resonanzfrequenz schwingenden Schwingförderer
DE4200194C2 (de) * 1992-01-07 1994-11-17 Bausch & Stroebel Maschf Schwingförderanordnung
AU6562794A (en) * 1993-04-20 1994-11-08 Msm Poly-Print Gmbh Oscillating conveyor with horizontally arranged rod spring components and uses
US5409101A (en) * 1994-02-03 1995-04-25 Allen Fruit Co., Inc. Variably-controlled vibratory conveyor
DE4410244A1 (de) * 1994-03-24 1995-09-28 Multipond Waegetechnik Gmbh Fördergut-Beschickungseinrichtung
RU2116143C1 (ru) * 1994-06-07 1998-07-27 Институт физики высоких энергий Электровибрационное устройство
EP0790198A3 (fr) 1996-02-16 1998-07-15 AEG Vibrationstechnik GmbH Méthode et dispositif pour faire fonctionner un système à oscillations de résonance
DE19606971C2 (de) * 1996-02-16 1997-12-18 Aeg Vibrationstechnik Gmbh Vorrichtung und Verfahren zum Betreiben eines Resonanzschwingungssystems
US6079550A (en) * 1998-01-08 2000-06-27 Allen Machinery, Inc. Vibratory conveyor
DE19809814B4 (de) * 1998-03-09 2007-06-06 Aviteq Vibrationstechnik Gmbh Verfahren und Vorrichtung zum Betreiben eines Schwingsystems
CN116736900B (zh) * 2023-04-26 2024-11-12 中铁工程设计咨询集团有限公司 一种轮轨振动噪音的动态控制方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864618A (en) * 1972-11-13 1975-02-04 Mem Controls Inc Electro-mechanical vibratory drive control
FR2492280A1 (fr) * 1980-10-16 1982-04-23 Sormel Sa Bol vibrant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8602058A1 *

Also Published As

Publication number Publication date
CH666359A5 (de) 1988-07-15
WO1986002058A1 (fr) 1986-04-10
AU4868285A (en) 1986-04-17

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