FR2481957A1 - Multi-directional powered vibrator - has spindle of hydraulic motors driving auxiliary pulleys causing rotation in opposite directions - Google Patents
Multi-directional powered vibrator - has spindle of hydraulic motors driving auxiliary pulleys causing rotation in opposite directions Download PDFInfo
- Publication number
- FR2481957A1 FR2481957A1 FR8108909A FR8108909A FR2481957A1 FR 2481957 A1 FR2481957 A1 FR 2481957A1 FR 8108909 A FR8108909 A FR 8108909A FR 8108909 A FR8108909 A FR 8108909A FR 2481957 A1 FR2481957 A1 FR 2481957A1
- Authority
- FR
- France
- Prior art keywords
- motors
- opposite directions
- auxiliary pulleys
- hydraulic motors
- pulleys
- 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- Withdrawn
Links
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- B06B1/166—Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase
-
- 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
- B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
- B06B1/186—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with rotary unbalanced masses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Rotary Pumps (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
La présente invention concerne un vibrateur multidirectionnel constitué par deux masses excentriques ancrées sur des poulies correspondantes et reliées å des moteurs hydrauliques alimentés en série ou en parallèle par une pompe commune. The present invention relates to a multidirectional vibrator constituted by two eccentric masses anchored on corresponding pulleys and connected to hydraulic motors supplied in series or in parallel by a common pump.
Dans le vibrateur selon l'invention, on recherche et on obtient la synchronisation des deux moteurs hydrauliques qui, tournant en sens contraire, produisent toujours un polygone en étoile multidirectionnel, quelles que soient les conditions de l'arbre a faire vibrer et la durée de cette vibration. In the vibrator according to the invention, the synchronization of the two hydraulic motors is sought and obtained, which, rotating in opposite directions, always produce a multidirectional star polygon, whatever the conditions of the shaft to be vibrated and the duration of this vibration.
I1 est bien connu qu'il existe deux types de vibrations, c'est-à-dire un type directionnel et un type multidirectionnel. La vibration unidirectionnelle consiste à déplacer un bras en utilisant le système de la bielle-manivelle, dont le résultat est pratiquement le même que celui que l'on obtient en frappant de façon répétée un tronc, par exemple, en un même point. La vibration multidirectionnelle consiste à faire tourner deux masses d'inertie ou contrepoids, montées sur le même axe en opposition, à des vitesses angulaires opposées et différentes. It is well known that there are two types of vibrations, that is to say a directional type and a multidirectional type. The unidirectional vibration consists of moving an arm using the crank-rod system, the result of which is practically the same as that obtained by repeatedly hitting a trunk, for example, at the same point. Multidirectional vibration consists in rotating two masses of inertia or counterweight, mounted on the same axis in opposition, at opposite and different angular speeds.
Cependant, si dans un vibrateur multidirectionnel on utilise un seul élément moteur, il est facile d'obtenir la multidirectionnalité puisqu'il est seulement nécessaire de changer le sens de rotation des masses et qu'à cet effet il existe différents procédés connus. However, if in a multidirectional vibrator a single motor element is used, it is easy to obtain multidirectionality since it is only necessary to change the direction of rotation of the masses and that for this purpose there are various known methods.
Pour obtenir une machine qui mette à profit avec un meilleur rendement la puissance motrice disponible, il convient d'utiliser deux moteurs hydrauliques alimentés en série ou en parallèle qui, tournant en sens contraire, actionnent chacun une poulie pourvue d'un contrepoids. I1 est évident que ces moteurs pourraient être actionnés par des fluides déplacés par deux pompes différentes, bien que l'installation en serait plus couteuse. To obtain a machine which takes advantage of the available motive power with better efficiency, two hydraulic motors supplied in series or in parallel should be used which, turning in opposite directions, each actuate a pulley provided with a counterweight. It is obvious that these motors could be actuated by fluids displaced by two different pumps, although the installation would be more expensive.
Par contre, l'utilisation avec un meilleur rendement de la puissance motrice disponible conduit à l'impossibilité d'obtenir l'uniformité de la vibration produite par la rotation des poulies dotées de contrepoids car le polygone en étoile de la vibration varie, ce qui empêche d'obtenir un polygone constant en ce qui concerne le nombre de vibrations et, finalement, on obtient une vibration unidirectionnelle. On the other hand, the use with a better output of the available motive power leads to the impossibility of obtaining the uniformity of the vibration produced by the rotation of the pulleys provided with counterweights because the star polygon of the vibration varies, which prevents a constant polygon from being obtained with regard to the number of vibrations, and ultimately a unidirectional vibration is obtained.
L'objet du présent modèle d'utilité consiste à obtenir que ce polygone se maintienne constant en ce qui concerne le nombre de directions de vibrations, ce qui est obtenu lorsque les moteurs qui assurent la rotation des contrepoids sont parfaitement synchronisés. The object of this utility model is to ensure that this polygon remains constant with respect to the number of directions of vibration, which is achieved when the motors which rotate the counterweights are perfectly synchronized.
A cet effet, dans le vibrateur selon l'invention, les axes des moteurs en question sont dotés de poulies auxiliaires qui en sont solidaires et qui sont reliées entre elles par deux autres poulies auxiliaires d'inversion du sens de rotation, lesquelles agissent à leur tour pour tendre la courroie de transmission, dans le but d'assurer une synchronisation parfaite de la rotation en sens contraire des moiteurs, afin de maintenir le polygone en étoile-multi- directionnel des vibrations. To this end, in the vibrator according to the invention, the axes of the motors in question are provided with auxiliary pulleys which are integral therewith and which are connected to each other by two other auxiliary pulleys for reversing the direction of rotation, which act at their turn to tighten the transmission belt, in order to ensure perfect synchronization of the rotation in the opposite direction of the wetnesses, in order to maintain the polygon in star-multidirectional vibration.
D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un exemple de réalisation et en se référant aux dessins annexés dans lesquels
- la figure 1 représente une vue en plan de l'accouplement qui correspond au vibrateur multidirectionnel qui constitue l'objet de la présente invention, et
- la figure 2 est une représentation schématique en élévation de face de l'accouplement en question.Other characteristics and advantages of the invention will be better understood on reading the following description of an embodiment and with reference to the accompanying drawings in which
FIG. 1 represents a plan view of the coupling which corresponds to the multidirectional vibrator which constitutes the object of the present invention, and
- Figure 2 is a schematic representation in front elevation of the coupling in question.
Dans ces figures, on peut voir que le vibrateur est constitué par deux moteurs 1 et 2 sur lesquels sont montées des poulies 3 et 4 qui, au moyen des courroies 5 et 6, transmettent le mouvement, respectivement, aux poulies dotées de contrepoids 7 et 8 qui produisent la vibration en tournant en sens contraire. In these figures, it can be seen that the vibrator is constituted by two motors 1 and 2 on which pulleys 3 and 4 are mounted which, by means of belts 5 and 6, transmit the movement, respectively, to the pulleys provided with counterweights 7 and 8 which produce the vibration by turning in the opposite direction.
L'invention est centrée sur l'accouplement aux axes des moteurs 1 et 2 de poulies auxiliaires 9 et 10 reliées entre elles par une courroie commune 11. Dans cet accouplement collaborent deux autres poulies auxiliaires 12 et 13 qui, en plus de permettre l'utilisation d'une seule courroie reliée à deux poulies qui tournent en sens contraire, agissent comme des éléments de tension de cette courroie 11. The invention is centered on the coupling to the axes of the motors 1 and 2 of auxiliary pulleys 9 and 10 connected together by a common belt 11. In this coupling collaborate two other auxiliary pulleys 12 and 13 which, in addition to allowing the use of a single belt connected to two pulleys which rotate in opposite directions, act as tensioning elements of this belt 11.
En accord avec ce qui vient d'être exposé, et en supposant que le moteur 1 est celui qui reçoit en premier lieu tout le débit de la pompe, il est clair que ce débit, à sa sortie du moteur 1 et à son entrée dans le moteur 2, présente une perte normale dont le retour est assuré par la conduite dlengrenage, et c'est précisément cette perte de fluide qui est responsable de la fluctuation du nombre de vibrations, car en raison-de cette perte le nombre de tours du premier moteur ne cotncide pas avec celui du second. Du fait que les axes correspondants aux deux moteurs 1 et 2 sont reliés physiquement par la courroie de transmission 11 ces moteurs sont obligés de tourner en synchronisme absolu et on obtient ainsi la suppression des fluctuations du nombre de vibrations, ce qui permet de maintenir à tout moment le polygone en étoile multidirectionnel prévu pour les vibrations. In agreement with what has just been exposed, and assuming that the motor 1 is the one which receives in the first place all the flow rate of the pump, it is clear that this flow rate, at its output from the motor 1 and at its entry into the motor 2 has a normal loss, the return of which is ensured by the gear line, and it is precisely this loss of fluid which is responsible for the fluctuation in the number of vibrations, because due to this loss the number of revolutions of the first motor does not coincide with that of the second. Due to the fact that the axes corresponding to the two motors 1 and 2 are physically connected by the transmission belt 11, these motors are forced to rotate in absolute synchronism and thus the suppression of the fluctuations in the number of vibrations is obtained, which makes it possible to maintain at all moment the multidirectional star polygon provided for vibrations.
Bien entendu, diverses modifications peuvent être apportées par l'homme de l'art aux dispositifs oc procédés qui viennent d'être décrits uniquement à titre d'exemple non limitatif, sans sortir du cadre de l'invention. Of course, various modifications can be made by those skilled in the art to the devices or methods which have just been described solely by way of nonlimiting example, without departing from the scope of the invention.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES1980250545U ES250545Y (en) | 1980-05-06 | 1980-05-06 | MULTIDIRECTIONAL VIBRATOR |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2481957A1 true FR2481957A1 (en) | 1981-11-13 |
Family
ID=8408731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8108909A Withdrawn FR2481957A1 (en) | 1980-05-06 | 1981-05-05 | Multi-directional powered vibrator - has spindle of hydraulic motors driving auxiliary pulleys causing rotation in opposite directions |
Country Status (4)
Country | Link |
---|---|
ES (1) | ES250545Y (en) |
FR (1) | FR2481957A1 (en) |
IT (1) | IT8121514A0 (en) |
PT (1) | PT72977B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0734786A1 (en) * | 1995-03-30 | 1996-10-02 | Zenith-Maschinenfabrik GmbH | Vibration device for a vibrating table of a moulding machine |
-
1980
- 1980-05-06 ES ES1980250545U patent/ES250545Y/en not_active Expired
-
1981
- 1981-05-05 PT PT72977A patent/PT72977B/en unknown
- 1981-05-05 IT IT8121514A patent/IT8121514A0/en unknown
- 1981-05-05 FR FR8108909A patent/FR2481957A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0734786A1 (en) * | 1995-03-30 | 1996-10-02 | Zenith-Maschinenfabrik GmbH | Vibration device for a vibrating table of a moulding machine |
Also Published As
Publication number | Publication date |
---|---|
PT72977A (en) | 1981-06-01 |
ES250545Y (en) | 1981-06-16 |
ES250545U (en) | 1981-01-16 |
IT8121514A0 (en) | 1981-05-05 |
PT72977B (en) | 1982-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |