BE825427A - METHOD AND DEVICE FOR ADJUSTING A VIBRATING APPARATUS WITH TWO UNBALANCES - Google Patents

METHOD AND DEVICE FOR ADJUSTING A VIBRATING APPARATUS WITH TWO UNBALANCES

Info

Publication number
BE825427A
BE825427A BE153266A BE153266A BE825427A BE 825427 A BE825427 A BE 825427A BE 153266 A BE153266 A BE 153266A BE 153266 A BE153266 A BE 153266A BE 825427 A BE825427 A BE 825427A
Authority
BE
Belgium
Prior art keywords
emi
unbalances
adjusting
vibrating
vibrating apparatus
Prior art date
Application number
BE153266A
Other languages
French (fr)
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 filed Critical
Priority to BE153266A priority Critical patent/BE825427A/en
Publication of BE825427A publication Critical patent/BE825427A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/166Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05GCONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G15/00Mechanical devices for initiating a movement automatically due to a specific cause
    • G05G15/06Mechanical devices for initiating a movement automatically due to a specific cause due to the speed of rotation or of bodily movement of a member, e.g. passing an upper or lower limit thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Vibration Prevention Devices (AREA)

Description

       

  Procédé et dispositif pour le réglage d'un appareil vibrant à deux balourds.

  
Les appareils vibrants,à deux balourds,

  
 <EMI ID=1.1> 

  
 <EMI ID=2.1> 

  
généralement utilisés comme alimentateurs ou alimentateùrs pré-
-cribleurs.Mais toujours pour de très lourdes charges de tout-ve&#65533;
-liant d'abattage dans l'industrie extractive.Il est courant de voir dans les carrières et dans les mines, de gros alimentateurs comportant deux balourds reliés entre-eux par un jeu de pignons

  
se mouvant dans un bain d'huile.

  
De tels appareils ne donnent toutefois,

  
à l'utilisateur,comme possibilités de réglage que,le changement

  
de l'engrènement des pignons,ou la variation de la vitesse de  rotation de la machine.Dans le premier cas,il faut absolument démonter l'appareil et obtenir de ce fait un changement du plan d'application de la résultante des forces vibratoires,suivant  <EMI ID=3.1>  <EMI ID=4.1>  bien connu le fait ces appareils sont conçus suivant une

  
 <EMI ID=5.1> 

  
Il est également bien connu que les cribles ou autres appareils vibrants comportant un ou deux balourds

  
 <EMI ID=6.1> 

  
particulièrement lors du démarrage ou le l'arrêt de la machine.

  
 <EMI ID=7.1>  <EMI ID=8.1>  flancs du caisson dans le but même d'atténuer les effets des

  
 <EMI ID=9.1> 

  
lesquels sont susceptibles d'entraîner la destruction rapide de la machine, ou de la charpente-support qui la soutient.

  
Dans le but d'éviter l'entrée en résonance, des appareils ont été munis d'un balourd composé d'éléments arti-
-culés qui ne se mettent en place qu'à une vitesse de rotation <EMI ID=10.1> 

  
ressorts rappellent lorsqu'on arrête la machine.Mais les aléas font que,souvent semblables mécanismes ne résistent pas aux effets destructeurs engendrés par la vibration.C'est pourquoi,les gros cribles à balourd ne comportent pas d'éléments articulés. 

  
 <EMI ID=11.1> 

  
 <EMI ID=12.1> 

  
 <EMI ID=13.1> 

  
sur les cribles,à la limite de leurs capacités de charge et de

  
 <EMI ID=14.1> 

  
 <EMI ID=15.1> 

  
La présente invention 3. pour but de permettre le

  
 <EMI ID=16.1>  <EMI ID=17.1>  cependant par une transmission desmodromique,en l'occurrence une chaise reliant un jeu de pignons,ou une courroie crantée reliant

  
 <EMI ID=18.1> 

  
construction de gros cribles à balourd en les munissant de deux

  
 <EMI ID=19.1> 

  
 <EMI ID=20.1> 

  
de l'invention - Etre réglés en marche par déphasage progressif ou dégressif,ce qui signifie que l'amplitude de vibration pourra passer de la valeur 0 à la valeur maximale et vice-versa.

  
Cela rend évident qu'en passant du Maximum à 0, l'amplitude devenue nulle,ne saurait engendrer le moindre phénomène de résonance.Ce qui rend l'allègement des charpentes possible à souhait.

  
Le réglage en marche s'obtient par la variation du nombre de maillons séparant deux repères portés sur les  <EMI ID=21.1> 

  
tourneront en sens inverse. - Dans le second cas, celui du crible

  
 <EMI ID=22.1> 

  
 <EMI ID=23.1> 

  
 <EMI ID=24.1> 

  
 <EMI ID=25.1> 

  
 <EMI ID=26.1> 

  
 <EMI ID=27.1> 

  
l'obtention d'une amplitude de vibration Maximale,dans lesquelles

  
 <EMI ID=28.1> 

  
 <EMI ID=29.1> 

  
X maillons sépareront encore les deux repères après N tours.

  
Par contre.si,le nombre de maillons s'accroît,il est évident que l'arbre mené2 prendra un retard par rapport à l'arbre

  
 <EMI ID=30.1> 

  
du nombre des maillons correspondant à la moitié du nombre de dents

  
 <EMI ID=31.1> 

  
 <EMI ID=32.1> 

  
dans la position initiale.Comme la perte prendra un grand nombre de tours pour se manifester,les vitesses respectives des arbres seront considérées à la même valeur pendant le temps que durera la manoeuvre.Comme la rotation fera que quelles que soient les posi-
-tions des repères,les balourds devront passer en parallèle à  <EMI ID=33.1> 

  
 <EMI ID=34.1> 
-tante est nulle.Il est donc possible de faire tourner le crible à sa vitesse normale sans qu' il se mette en mouvement.Il est toutefois bien certain que la puissance nécessaire à l'entratner <EMI ID=35.1> 

  
 <EMI ID=36.1> 

  
 <EMI ID=37.1> 

  
 <EMI ID=38.1> 

  
Par contrées!,le nombre de maillons séparant les

  
 <EMI ID=39.1> 

  
à '.ni, demi-circonférence du cercle primitif,rendra évident le fait que l'arbre mené passera au repère de référence avec un retard de 180[deg.].Les balourds seront orientés dans le même sens et s'ajouteront pour créer l'amplitude de vibration Maximale.

  
Tant dans le premier cas que dans le second,s'étendra

  
 <EMI ID=40.1> 

  
sera possible d'obtenir.

  
Le dispositif utilisé pour faire varier la distance séparant les repères peut,par exemple être constitué par un jeu de glissières dont la graduation permettra la reproduction d'un même réglage ultérieur.

  
D'une façon générale,on constatera que la valeur de la résultante est maintenue continuellement dans le procédé. 

  
 <EMI ID=41.1> 

  
 <EMI ID=42.1> 

  
en ce qu'on modifie la position des balourds en déphasant le

  
 <EMI ID=43.1> 

  
2..- Appareil statique pour la commande d'un appareil

  
 <EMI ID=44.1> 



  Method and device for adjusting a vibrating device with two unbalances.

  
Vibrating devices, with two unbalances,

  
 <EMI ID = 1.1>

  
 <EMI ID = 2.1>

  
generally used as feeders or pre-feeders
-scriblers.But always for very heavy loads of everything-ve &#65533;
- Slaughter binder in the extractive industry.It is common to see in quarries and mines, large feeders with two unbalances connected to each other by a set of gears

  
moving in an oil bath.

  
However, such devices do not give

  
to the user, as setting possibilities that, the change

  
the meshing of the pinions, or the variation in the speed of rotation of the machine In the first case, it is absolutely necessary to dismantle the device and thereby obtain a change in the plane of application of the resultant of the vibratory forces, next <EMI ID = 3.1> <EMI ID = 4.1> well known the fact these devices are designed according to a

  
 <EMI ID = 5.1>

  
It is also well known that screens or other vibrating apparatus comprising one or two unbalances

  
 <EMI ID = 6.1>

  
especially when starting or stopping the machine.

  
 <EMI ID = 7.1> <EMI ID = 8.1> sides of the box for the very purpose of attenuating the effects of

  
 <EMI ID = 9.1>

  
which are liable to lead to the rapid destruction of the machine, or of the supporting frame which supports it.

  
In order to avoid the entry into resonance, devices have been fitted with an unbalance made up of arti-
-culés which only set up at a rotational speed <EMI ID = 10.1>

  
The springs spring back when you stop the machine. But the vagaries of the times mean that, often such mechanisms do not resist the destructive effects generated by the vibration. This is why large unbalance screens do not have articulated elements.

  
 <EMI ID = 11.1>

  
 <EMI ID = 12.1>

  
 <EMI ID = 13.1>

  
on the screens, at the limit of their load capacities and

  
 <EMI ID = 14.1>

  
 <EMI ID = 15.1>

  
The present invention 3. for the purpose of enabling the

  
 <EMI ID = 16.1> <EMI ID = 17.1> however by a desmodromic transmission, in this case a chair connecting a set of gears, or a toothed belt connecting

  
 <EMI ID = 18.1>

  
construction of large unbalance screens by providing them with two

  
 <EMI ID = 19.1>

  
 <EMI ID = 20.1>

  
of the invention - Be adjusted in operation by progressive or decreasing phase shift, which means that the vibration amplitude can go from the value 0 to the maximum value and vice versa.

  
This makes it obvious that by going from Maximum to 0, the amplitude having become zero, could not generate the slightest resonance phenomenon, which makes the lightening of the frames possible at will.

  
On-the-fly adjustment is obtained by varying the number of links separating two marks on the <EMI ID = 21.1>

  
will rotate in the opposite direction. - In the second case, that of the sieve

  
 <EMI ID = 22.1>

  
 <EMI ID = 23.1>

  
 <EMI ID = 24.1>

  
 <EMI ID = 25.1>

  
 <EMI ID = 26.1>

  
 <EMI ID = 27.1>

  
obtaining a maximum amplitude of vibration, in which

  
 <EMI ID = 28.1>

  
 <EMI ID = 29.1>

  
X links will still separate the two marks after N turns.

  
On the other hand, if the number of links increases, it is obvious that the driven shaft2 will lag behind the shaft.

  
 <EMI ID = 30.1>

  
the number of links corresponding to half the number of teeth

  
 <EMI ID = 31.1>

  
 <EMI ID = 32.1>

  
as the loss will take a large number of turns to manifest itself, the respective speeds of the shafts will be considered at the same value during the time that the maneuver will last. As the rotation will make whatever the positions
-tions of the benchmarks, the unbalances must pass in parallel to <EMI ID = 33.1>

  
 <EMI ID = 34.1>
-tante is zero. It is therefore possible to make the screen rotate at its normal speed without it setting in motion. However, it is quite certain that the power required to train it <EMI ID = 35.1>

  
 <EMI ID = 36.1>

  
 <EMI ID = 37.1>

  
 <EMI ID = 38.1>

  
By regions !, the number of links separating the

  
 <EMI ID = 39.1>

  
at '.ni, half-circumference of the pitch circle, will make it obvious that the driven shaft will pass to the reference frame with a delay of 180 [deg.]. The unbalances will be oriented in the same direction and will be added to create the maximum amplitude of vibration.

  
Both in the first case and in the second, will extend

  
 <EMI ID = 40.1>

  
will be possible to get.

  
The device used to vary the distance separating the marks can, for example, consist of a set of slides whose graduation will allow the reproduction of the same subsequent adjustment.

  
In general, it will be observed that the value of the resultant is maintained continuously in the process.

  
 <EMI ID = 41.1>

  
 <EMI ID = 42.1>

  
in that the position of the unbalances is modified by shifting the

  
 <EMI ID = 43.1>

  
2 ..- Static device for controlling a device

  
 <EMI ID = 44.1>


    

Claims (1)

<EMI ID=45.1> <EMI ID = 45.1> <EMI ID=46.1> <EMI ID = 46.1> 3.- Appareil statique suivant la, revendication 2.carac- 3.- Static apparatus according to claim 2.carac- -térisé en se qu'il commande un appareil vibrant par des acces- <EMI ID=47.1> -terified in that it controls a vibrating device by acces- <EMI ID = 47.1> 4.-Appareil statique suivant la revendication 3. carac- <EMI ID=48.1> 4.-Static apparatus according to claim 3. charac- <EMI ID = 48.1> un levier,s oit un vérin, hydraulique. a lever, namely a hydraulic cylinder. 3.-Procédé et dispositif suivant la revendication!. caractérisé en ce qu'il peut faire partie intégrante d'un appa- 3. A method and device according to claim !. characterized in that it can be an integral part of an appliance -reil vibrant. vibrating eye. 6.-Procédé et dispositif pour le réglage d'un appareil 6.-Method and device for adjusting an appliance <EMI ID=49.1> <EMI ID = 49.1> avec référence au dessin annexé. with reference to the accompanying drawing.
BE153266A 1975-02-12 1975-02-12 METHOD AND DEVICE FOR ADJUSTING A VIBRATING APPARATUS WITH TWO UNBALANCES BE825427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE153266A BE825427A (en) 1975-02-12 1975-02-12 METHOD AND DEVICE FOR ADJUSTING A VIBRATING APPARATUS WITH TWO UNBALANCES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE825427 1975-02-12
BE153266A BE825427A (en) 1975-02-12 1975-02-12 METHOD AND DEVICE FOR ADJUSTING A VIBRATING APPARATUS WITH TWO UNBALANCES

Publications (1)

Publication Number Publication Date
BE825427A true BE825427A (en) 1975-05-29

Family

ID=25648389

Family Applications (1)

Application Number Title Priority Date Filing Date
BE153266A BE825427A (en) 1975-02-12 1975-02-12 METHOD AND DEVICE FOR ADJUSTING A VIBRATING APPARATUS WITH TWO UNBALANCES

Country Status (1)

Country Link
BE (1) BE825427A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316482A1 (en) * 1987-11-20 1989-05-24 Ermanno Pacini Flexible-link loop transmission with belt and pulleys, with variable mutual angular position of the pulleys
EP0400510A1 (en) * 1989-06-02 1990-12-05 M.A.B. Apparatus with vibrating table for making concrete products
WO1992020467A1 (en) * 1991-05-22 1992-11-26 Societe Materiels Vincent Vaillant Mvv S.A. Device allowing the control and action of vibratory effects on machines and materials particularly for the treatment of products intended to be vibrated, compressed and compacted

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316482A1 (en) * 1987-11-20 1989-05-24 Ermanno Pacini Flexible-link loop transmission with belt and pulleys, with variable mutual angular position of the pulleys
EP0400510A1 (en) * 1989-06-02 1990-12-05 M.A.B. Apparatus with vibrating table for making concrete products
FR2647705A1 (en) * 1989-06-02 1990-12-07 Balbinot Ets VIBRATING TABLE INSTALLATION FOR THE MANUFACTURE OF CONCRETE PRODUCTS
WO1992020467A1 (en) * 1991-05-22 1992-11-26 Societe Materiels Vincent Vaillant Mvv S.A. Device allowing the control and action of vibratory effects on machines and materials particularly for the treatment of products intended to be vibrated, compressed and compacted
FR2676664A1 (en) * 1991-05-22 1992-11-27 Vaillant Materiels Vincent DEVICE AUTHORIZING THE CONTROL AND ACTION OF VIBRATORY EFFECTS ON MACHINES INTENDED IN PARTICULAR FOR THE MANUFACTURE OF PRODUCTS INTENDED TO BE VIBRATED AND COMPACT.

Similar Documents

Publication Publication Date Title
EP0729399B1 (en) Telescopic system
BE825427A (en) METHOD AND DEVICE FOR ADJUSTING A VIBRATING APPARATUS WITH TWO UNBALANCES
FR2649021A1 (en) VIBRATION GENERATOR
EP1475465A2 (en) Shedding mechanism and jacquard loom with such a mechanism
FR2441671A1 (en) SPEED VARIATOR FOR SPINNING OR WRAPPING
CA2017041A1 (en) Vibrating table installation for the manufacturing of concrete products
NO128670B (en)
CH496274A (en) Time counter drives from a variable speed input shaft
FR2724948A1 (en) JACQUARD MECHANISM OF THE BELT TYPE
US1011180A (en) Gearing.
BE552058A (en)
FR2527990A1 (en) METHOD AND INSTALLATION FOR POSITIONING CYLINDERS AND ROLLS ON PRINTING MACHINES
EP0320380B1 (en) Machine for stapling with an oscillating stapler head
EP0666020B1 (en) Vibrating unit for fruit trees
US2512454A (en) Infinitely variable change-speed gear
US953144A (en) Change-speed belt-gearing.
US560120A (en) eunnell
FR2489377A1 (en) Drive mechanism for shedding-motion lag cylinder - has drive pinion engaging worm subject to intermittent longitudinal displacement
FR2724854A1 (en) Generation and control of vibrations for vibratory plant, e.g. for separating, crushing or compacting materials
JP3144774B2 (en) Exciting force generator
US365447A (en) Machine for spinning and twisting cords
CH241986A (en) Vibration generator device.
CH153256A (en) Drive device for wood on machines such as routers.
BE331688A (en)
BE479684A (en)

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: DUMONT JEAN

Effective date: 19840212