EP2393990B1 - Vibrating device powered by hydraulic motor for a vibrocompacting machine - Google Patents

Vibrating device powered by hydraulic motor for a vibrocompacting machine Download PDF

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Publication number
EP2393990B1
EP2393990B1 EP10706021.2A EP10706021A EP2393990B1 EP 2393990 B1 EP2393990 B1 EP 2393990B1 EP 10706021 A EP10706021 A EP 10706021A EP 2393990 B1 EP2393990 B1 EP 2393990B1
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EP
European Patent Office
Prior art keywords
hydraulic motor
tubular body
vibrator device
rotor
hydraulic
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EP10706021.2A
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German (de)
French (fr)
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EP2393990A1 (en
Inventor
Daniel Perpezat
Laurent Pivert
Philippe Chagnot
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Soletanche Freyssinet SA
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Soletanche Freyssinet SA
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Publication of EP2393990A1 publication Critical patent/EP2393990A1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/054—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil involving penetration of the soil, e.g. vibroflotation

Definitions

  • the present invention relates to the field of soil treatment by vibro-compacting.
  • the vibrocompacting technique consists in penetrating vertically into the ground a penetration unit composed of a vibrator device connected to a carrier by a plurality of tubes of substantially the same diameter as the vibrating device.
  • the vibrator device When the penetration unit penetrates the ground, the vibrator device generates radial vibrations that diffuse into the ground with the effect of improving its mechanical properties.
  • this technique is used to compact a volume of soil consisting for example of grains, such as sand.
  • the hydraulic motor that equips such a vibrator device comes from a range that is usually found in the trade.
  • the motor used in the prior art consists of a rotor and a stator which form an assembly distinct from the other elements of the vibrator device and in particular of the tubular body.
  • the motor assembly is disposed in the tubular body to connect the eccentric member to the rotor.
  • the rotor is the portion of the motor that is rotatably mounted in the motor housing.
  • Such vibrators are described in particular in the documents US 2002/003989 and DE 102 32 314 wherein the motor assembly constitutes a unit distinct from the rest of the vibrator device and in particular the tubular body.
  • a disadvantage of this assembly is that it requires the use of hydraulic motors of small displacement and thus having a low power.
  • a constraint vibrators devices is that they must easily sink into the ground. To do this, we try to minimize the diameter of the tubular body. The penetration into the soil is indeed facilitated by a thin tubular body.
  • An object of the invention is to provide a vibrator device with hydraulic motorization overcomes the aforementioned drawbacks.
  • the invention achieves its object by the fact that the casing of the first hydraulic motor is constituted by the tubular body.
  • the first hydraulic motor further comprises at least one bearing disposed between the rotor and an inner surface of the tubular body.
  • This bearing for example constituted by a bearing, provides guidance in rotation of the rotor relative to the inner surface of the tubular body.
  • the bearing is locked axially with respect to the tubular body through a shoulder formed on the inner surface of the tubular body.
  • the bearing bears directly on the inner surface of the tubular body.
  • the volume available for the rotor is maximum since there is no room between the bearing and the tubular body.
  • the vibrator device further comprises a sleeve disposed between the bearing and the inner surface of the tubular body.
  • the sleeve comprises a sealing member for sealing between the rotor and the eccentric member.
  • the sleeve also extends axially towards the eccentric member so as to define a housing for a connection piece between the rotor shaft and the eccentric member.
  • the tubular body consists of a first part in which is housed the eccentric member and a second part, distinct from the first part, in which is housed at least a part of the rotor of the first hydraulic motor, the first part being integrally fixed to the second part by means of the sleeve.
  • An interest is to be able to change the eccentric organ, possibly with the first part of the tubular body if these parts come to be damaged.
  • the first hydraulic motor further comprises a yoke mounted at a longitudinal end of the rotor, said yoke having a diameter substantially equal to the inside diameter of the tubular body.
  • the cylinder head is the part of the hydraulic motor for feeding the rotor with hydraulic energy.
  • the cylinder head according to the invention makes it possible to achieve a seal between the chamber defined radially between the rotor and the inner face of the tubular body on the one hand, and the upper part of the tubular body on the other hand.
  • This conformation is particularly advantageous when the vibrator device according to the invention is devoid of sleeve.
  • the peripheral edge of the yoke bears axially against a shoulder formed in the inner face of the tubular body.
  • the vibrator device further comprises a second hydraulic motor disposed in the tubular body while being intended to be coupled to the first hydraulic motor.
  • the second hydraulic motor can be coupled, or not, to the first hydraulic motor, whereby one can advantageously modify the vibratory frequency generated by the vibrator device.
  • the assembly thus formed has a larger displacement and can deliver greater power than if the first hydraulic motor was the only one to operate. It follows that for the same hydraulic flow, the eccentric member rotates less quickly and generates vibrations at a lower frequency.
  • the vibrator device further comprises a distributor for supplying at least one of the two hydraulic motors.
  • the vibrator device according to the invention is therefore advantageously reactive.
  • the displacement of the first hydraulic motor is greater than the displacement of the second hydraulic motor.
  • FIG. 1 An example is shown of a vibration compacting machine 10 according to the invention which is used in this configuration for realizing a vibration compacting operation.
  • This machine 10 comprises a frame 12 mounted on tracks 14 to ensure its displacement, and a bracket 16 extending in height from the frame 12.
  • the machine 10 further comprises a vibrator device 18 mounted at the lower end of a plurality of tubes 20 oriented vertically while being carried by the end 16a of the bracket 16.
  • the vibrating device 18 has the shape of a long and thin cylinder whose length is large relative to its diameter, the lower end of the vibrator device having a head to facilitate penetration into the ground.
  • the vibrator device 18 Due to its particular shape, the vibrator device 18 is able to sink into soft ground, such as sand, generally only under the effect of the force of gravity. However, it is nevertheless possible, if necessary, to apply a complementary vertical force (commonly called “pull down").
  • the upper end 20 a of the set of tubes 20 is attached to a cable 22 which is guided by a set of pulleys 24 disposed at the end 16 a of the bracket 16.
  • the movement of the cable 22 is ensured in our example by a motorized reel 26, mounted on the frame 12. It will be understood that the cable 22 makes it possible to raise the vibrating device and also to guide its descent.
  • the machine 10 further comprises means 28 for supplying the hydraulic motorization of the vibrator device 18 with hydraulic energy.
  • these means 28 comprise a reel 30 of hydraulic hoses 32, and a source of hydraulic energy (not shown).
  • the hydraulic hoses 32 are fed, via a pulley 34 located at the end 16 a of the bracket, to the vibrator device 18 extending inside the tubes 20.
  • the vibrator device 18 When the vibrator device 18 enters the ground S, it generates vibrations V that diffuse into the ground.
  • the vibrator device 18 can effectively reach a depth of the order of several tens of meters.
  • the vibrator device 100 comprises a tubular body 102 extending longitudinally along the axis A of the vibrating device 100.
  • This tubular body 102 has a lower end 102a and one end. superior 102 b.
  • the lower end 102a of the tubular body 102 carries a domed head 104 to facilitate the penetration of the vibrator device 100 into the ground, while the upper end 102b has a coupling member 106 for attachment to the lower end. of the set of tubes 20 mentioned above.
  • the tubular body 102 has an inner surface 102c which is cylindrical here.
  • the vibrator device 100 further comprises an eccentric member 108 intended to be rotated about the axis A by a hydraulic motor 110.
  • the eccentric member 108 known elsewhere, is here in the form of of a cylinder of which a section is hollowed out. This eccentric member 108 is held and guided at both ends by two bearings 112,114.
  • the hydraulic motor 110 is in turn conventionally powered by at least two hydraulic lines 116,118 which extend axially while constituting the extension of the hydraulic hoses 32. Three hydraulic lines are necessary if the drainage function is provided by a separate pipe.
  • This hydraulic motor 110 in this case a motor of axial piston type 120, comprises a rotor 122 which is integrally fixed to an axial transmission shaft 124, the latter being in turn coupled to the eccentric member 108.
  • the rotor 122 has the shape of a cylinder in which the axial pistons 120 can move axially.
  • the stator 128 of the hydraulic motor 110 is advantageously constituted by the tubular body 102, which allows, for a given tubular body, to have a rotor having a larger displacement than when using a complete hydraulic motor trade, thanks to which one has more power.
  • the rotor 122 is guided in rotation by two bearings 130, 132 disposed between the rotor 122 and the inner surface 102c of the tubular body 102. It should be noted that one could quite use only the bearing 130 for example. More specifically, it is found in this embodiment that the bearings 130,132 bear directly on the inner surface 102c.
  • the hydraulic motor 110 further comprises a yoke 142 which is mounted at a longitudinal end of the rotor 122, in this case its upper end 144.
  • the yoke 142 has a diameter substantially equal to the inside diameter of the tubular body 102, whereby the yoke 142, possibly with a seal 146, allows sealing between the chamber containing the bearings 130,132 and the upper end of the inside of the tubular body 102.
  • This second embodiment of the vibrator device 200 differs from the first embodiment in that it further comprises a sleeve 202 of generally cylindrical shape extending, in this example, axially between the bearings 114 of the eccentric member 108 and the breech 142.
  • This sleeve 202 surrounds the rotor 122 being arranged radially between the bearings 130, 132 and the inner surface 102c of the tubular body 102.
  • FIG. 5 there is shown a vibrator device 300 in a variant of the second embodiment above.
  • the tubular body 302 consists of a first portion 302a and a second portion 302b , these two portions being distinct and preferably having substantially the same diameter.
  • the eccentric member 108 is housed in the first portion 302a , while the second portion 302b houses the hydraulic motor 110 and the hydraulic lines 116, 118.
  • the first portion 302a is attached to the second portion 302b through a sleeve 304 similar to the aforementioned sleeve 202 .
  • the sleeve 304 comprises first attachment means 306 disposed at a lower end 304a of the sleeve 304 for attachment to the first portion 302a , and second attachment means 308 disposed on the outer surface 304b of the sleeve 304 for attachment to the lower end of the second portion 302b of the tubular body 302.
  • the sleeve 304 further comprises a cylindrical portion 310 intended to be introduced into the second portion 302b of the tubular body 302.
  • the outside diameter of this cylindrical portion 310 corresponds substantially to the inside diameter of the second portion 302b of the tubular body 302.
  • the thickness of the wall 312 of the cylindrical portion 310 is chosen to be fine enough to maximize the volume available for the rotor 122.
  • the yoke 142 is radially supported on the wall of the cylindrical portion 310.
  • the inclined cam 314, on which the ends of the axial pistons 120 bear advantageously forms a single piece with the sleeve 304.
  • the vibrator device 400 comprises a first hydraulic motor 402 similar to the hydraulic motor 110 of the first embodiment, whose rotor 122 is coupled to a transmission shaft 404, the latter being connected to the eccentric member 108 .
  • the vibrator device 400 further comprises a second hydraulic motor 406, distinct from the first hydraulic motor 402, which is coupled to the transmission shaft 404.
  • the output shaft 408 of the second hydraulic motor 406 also extends along the axis A and cooperates with the upper end 404a of the transmission shaft 404.
  • the second hydraulic motor 406 is thus able to be coupled with the first hydraulic motor 402 in order to provide additional power to the transmission shaft 404. This results in a hydraulic flow equal to a reduction in the frequency of the vibrations generated by the eccentric member 108.
  • the vibrator device 400 For the supply of the two hydraulic motors, the vibrator device 400 comprises a distributor 410 connected on the one hand to the hydraulic lines 116, 118, and to each of the two engines on the other hand.
  • the dispenser 410 is controllable so that the operator can choose to activate or not the second hydraulic motor 406.
  • the displacement of the second hydraulic motor is preferably smaller than that of the first hydraulic motor 402, thanks to which, in particular, the supply lines 412,414 coming out of the distributor and intended to supply the first hydraulic motor extend axially. around the second hydraulic motor.
  • the second hydraulic motor 406 can for example be actuated on demand in order to change the frequency of the vibrations generated.

Description

Arrière plan de l'inventionBackground of the invention

La présente invention concerne le domaine du traitement du sol par vibrocompactage.The present invention relates to the field of soil treatment by vibro-compacting.

La technique de vibrocompactage, consiste à faire pénétrer verticalement dans le sol une unité de pénétration composée d'un dispositif vibreur relié à un porteur par une pluralité de tubes sensiblement du même diamètre que le dispositif vibreur.The vibrocompacting technique consists in penetrating vertically into the ground a penetration unit composed of a vibrator device connected to a carrier by a plurality of tubes of substantially the same diameter as the vibrating device.

Lorsque l'unité de pénétration pénètre le sol, le dispositif vibreur génère des vibrations radiales qui se diffusent dans le sol avec pour effet d'améliorer ses propriétés mécaniques. Par exemple, cette technique est utilisée pour compacter un volume de sol constitué par exemple de grains, comme du sable.When the penetration unit penetrates the ground, the vibrator device generates radial vibrations that diffuse into the ground with the effect of improving its mechanical properties. For example, this technique is used to compact a volume of soil consisting for example of grains, such as sand.

L'invention concerne plus précisément un dispositif vibreur pour une machine de vibrocompactage comportant :

  • un corps tubulaire s'étendant longitudinalement tout en présentant une extrémité inférieure ;
  • au moins un premier moteur hydraulique disposé dans le corps tubulaire et comportant un rotor et un carter formant un stator ;
  • un organe excentrique disposé dans le corps tubulaire entre l'extrémité inférieure et le premier moteur hydraulique, ledit organe excentrique étant destiné à être entrainé en rotation par le rotor du premier moteur hydraulique afin de produire des vibrations.
The invention more specifically relates to a vibrator device for a vibro-compaction machine comprising:
  • a tubular body extending longitudinally while having a lower end;
  • at least one first hydraulic motor disposed in the tubular body and having a rotor and a casing forming a stator;
  • an eccentric member disposed in the tubular body between the lower end and the first hydraulic motor, said eccentric member being adapted to be rotated by the rotor of the first hydraulic motor to produce vibrations.

Le moteur hydraulique qui équipe un tel dispositif vibreur provient d'une gamme que l'on trouve habituellement dans le commerce.The hydraulic motor that equips such a vibrator device comes from a range that is usually found in the trade.

Le moteur utilisé dans l'art antérieur consiste en un rotor et un stator qui forment un ensemble distinct des autres éléments du dispositif vibreur et notamment du corps tubulaire.The motor used in the prior art consists of a rotor and a stator which form an assembly distinct from the other elements of the vibrator device and in particular of the tubular body.

Lors du montage, l'ensemble moteur est disposé dans le corps tubulaire afin de connecter l'organe excentrique au rotor. Classiquement, le rotor est la partie du moteur qui est montée rotative dans le carter du moteur.During assembly, the motor assembly is disposed in the tubular body to connect the eccentric member to the rotor. Conventionally, the rotor is the portion of the motor that is rotatably mounted in the motor housing.

De tels vibreurs sont notamment décrits dans les documents US 2002/003989 et DE 102 32 314 dans lesquels l'ensemble moteur constitue une unité distincte du reste du dispositif vibreur et notamment du corps tubulaire.Such vibrators are described in particular in the documents US 2002/003989 and DE 102 32 314 wherein the motor assembly constitutes a unit distinct from the rest of the vibrator device and in particular the tubular body.

Un inconvénient de ce montage est qu'il oblige à utiliser des moteurs hydrauliques de petite cylindrée et donc présentant une faible puissance.A disadvantage of this assembly is that it requires the use of hydraulic motors of small displacement and thus having a low power.

En effet, une contrainte des dispositifs vibreurs est qu'ils doivent facilement s'enfoncer dans le sol. Pour ce faire, on cherche à minimiser le diamètre du corps tubulaire. La pénétration dans le sol est en effet facilitée par un corps tubulaire fin.Indeed, a constraint vibrators devices is that they must easily sink into the ground. To do this, we try to minimize the diameter of the tubular body. The penetration into the soil is indeed facilitated by a thin tubular body.

C'est pour cette raison que l'on cherche à construire des dispositifs vibreurs présentant le plus petit diamètre possible, typiquement de l'ordre de 300 mm.It is for this reason that we seek to build vibrating devices having the smallest possible diameter, typically of the order of 300 mm.

Il en résulte que le volume disponible pour le moteur hydraulique est limité. La capacité de pénétration du dispositif vibreur se fait donc généralement au détriment de la puissance de la motorisation hydraulique.As a result, the available volume for the hydraulic motor is limited. The penetration capacity of the vibrator device is therefore generally at the expense of the power of the hydraulic motor.

Pour cette raison, certains industriels se détournent de la solution hydraulique et préfèrent utiliser un moteur électrique dont les éléments constitutifs peuvent présenter une grande longueur par rapport à leur diamètre.For this reason, some manufacturers are turning away from the hydraulic solution and prefer to use an electric motor whose constituent elements may have a great length relative to their diameter.

Objet et résumé de l'inventionObject and summary of the invention

Un but de l'invention est de proposer un dispositif vibreur à motorisation hydraulique remédiant aux inconvénients précités.An object of the invention is to provide a vibrator device with hydraulic motorization overcomes the aforementioned drawbacks.

L'invention atteint son but par le fait que le carter du premier moteur hydraulique est constitué par le corps tubulaire.The invention achieves its object by the fact that the casing of the first hydraulic motor is constituted by the tubular body.

Un intérêt est de pouvoir se dispenser d'utiliser le carter formant stator du moteur hydraulique lorsque ce dernier provient d'une gamme du commerce, de sorte que, grâce à l'invention, le volume disponible pour le rotor est plus important que dans l'art antérieur, en conséquence de quoi on augmente avantageusement la cylindrée du moteur hydraulique, et donc sa puissance maximum délivrable.An interest is to be able to dispense with the use of the stator casing of the hydraulic motor when the latter comes from a commercial range, so that, thanks to the invention, the volume available for the rotor is greater than in the prior art, as a result of which advantageously increases the displacement of the hydraulic motor, and therefore its maximum deliverable power.

En d'autres termes, selon l'invention, le carter originel du moteur utilisé dans les dispositifs vibreurs de l'art antérieur n'est pas utilisé.In other words, according to the invention, the original casing of the motor used in vibrating devices of the prior art is not used.

Ainsi, dans le volume défini à l'intérieur du corps tubulaire, il est avantageusement possible de former un moteur hydraulique ayant des performances mécaniques sensiblement supérieures aux dispositifs vibreurs existants.Thus, in the volume defined inside the tubular body, it is advantageously possible to form a hydraulic motor having mechanical performance substantially greater than existing vibrating devices.

Avantageusement, le premier moteur hydraulique comporte en outre au moins un palier disposé entre le rotor et une surface intérieure du corps tubulaire.Advantageously, the first hydraulic motor further comprises at least one bearing disposed between the rotor and an inner surface of the tubular body.

Ce palier, par exemple constitué par un roulement, assure le guidage en rotation du rotor par rapport à la surface intérieure du corps tubulaire.This bearing, for example constituted by a bearing, provides guidance in rotation of the rotor relative to the inner surface of the tubular body.

De préférence, mais pas nécessairement, le palier est bloqué axialement par rapport au corps tubulaire par le biais d'un épaulement formé sur la surface intérieure du corps tubulaire.Preferably, but not necessarily, the bearing is locked axially with respect to the tubular body through a shoulder formed on the inner surface of the tubular body.

Selon un premier mode de réalisation, le palier prend appui directement sur la surface intérieure du corps tubulaire.According to a first embodiment, the bearing bears directly on the inner surface of the tubular body.

Dans ce premier mode de réalisation, le volume disponible pour le rotor est maximal puisqu'il n'y a pas de pièce entre le roulement et le corps tubulaire.In this first embodiment, the volume available for the rotor is maximum since there is no room between the bearing and the tubular body.

Selon un deuxième mode de réalisation, le dispositif vibreur selon l'invention comporte en outre un manchon disposé entre le palier et la surface intérieure du corps tubulaire.According to a second embodiment, the vibrator device according to the invention further comprises a sleeve disposed between the bearing and the inner surface of the tubular body.

De préférence, le manchon comporte un organe d'étanchéité pour réaliser l'étanchéité entre le rotor et l'organe excentrique.Preferably, the sleeve comprises a sealing member for sealing between the rotor and the eccentric member.

De préférence, le manchon s'étend également axialement vers l'organe excentrique de manière à définir un logement pour une pièce de connexion entre l'arbre du rotor et l'organe excentrique.Preferably, the sleeve also extends axially towards the eccentric member so as to define a housing for a connection piece between the rotor shaft and the eccentric member.

Selon une variante du deuxième mode de réalisation de l'invention, le corps tubulaire est constitué d'une première partie dans laquelle est logé l'organe excentrique et d'une seconde partie, distincte de la première partie, dans laquelle est logée au moins une partie du rotor du premier moteur hydraulique, la première partie étant fixée solidairement à la seconde partie par l'intermédiaire du manchon.According to a variant of the second embodiment of the invention, the tubular body consists of a first part in which is housed the eccentric member and a second part, distinct from the first part, in which is housed at least a part of the rotor of the first hydraulic motor, the first part being integrally fixed to the second part by means of the sleeve.

On comprend donc que, grâce au manchon, il est possible de démonter la première partie du corps tubulaire sans déplacer ni démonter le premier moteur hydraulique.It is therefore understood that, thanks to the sleeve, it is possible to disassemble the first part of the tubular body without displacing or disassembling the first hydraulic motor.

Un intérêt est de pouvoir changer l'organe excentrique, éventuellement avec la première partie du corps tubulaire si ces pièces viennent à s'endommager.An interest is to be able to change the eccentric organ, possibly with the first part of the tubular body if these parts come to be damaged.

Avantageusement, le premier moteur hydraulique comporte en outre une culasse montée à une extrémité longitudinale du rotor, ladite culasse ayant un diamètre sensiblement égal au diamètre intérieur du corps tubulaire.Advantageously, the first hydraulic motor further comprises a yoke mounted at a longitudinal end of the rotor, said yoke having a diameter substantially equal to the inside diameter of the tubular body.

La culasse est la pièce du moteur hydraulique permettant l'alimentation du rotor en énergie hydraulique.The cylinder head is the part of the hydraulic motor for feeding the rotor with hydraulic energy.

La culasse selon l'invention permet de réaliser une étanchéité entre la chambre définie radialement entre le rotor et la face intérieure du corps tubulaire d'une part, et la partie supérieure du corps tubulaire d'autre part. Cette conformation est particulièrement avantageuse lorsque le dispositif vibreur selon l'invention est dépourvu de manchon.The cylinder head according to the invention makes it possible to achieve a seal between the chamber defined radially between the rotor and the inner face of the tubular body on the one hand, and the upper part of the tubular body on the other hand. This conformation is particularly advantageous when the vibrator device according to the invention is devoid of sleeve.

De préférence, le bord périphérique de la culasse vient en appui axial contre un épaulement ménagé dans la face intérieure du corps tubulaire.Preferably, the peripheral edge of the yoke bears axially against a shoulder formed in the inner face of the tubular body.

Selon un troisième mode de réalisation, le dispositif vibreur comporte en outre un deuxième moteur hydraulique disposé dans le corps tubulaire tout en étant destiné à être couplé au premier moteur hydraulique.According to a third embodiment, the vibrator device further comprises a second hydraulic motor disposed in the tubular body while being intended to be coupled to the first hydraulic motor.

Ainsi, selon l'invention, le deuxième moteur hydraulique peut être couplé, ou non, au premier moteur hydraulique, grâce à quoi on peut avantageusement modifier la fréquence vibratoire générée par le dispositif vibreur.Thus, according to the invention, the second hydraulic motor can be coupled, or not, to the first hydraulic motor, whereby one can advantageously modify the vibratory frequency generated by the vibrator device.

En effet, lorsque les deux moteurs sont mécaniquement couplés, l'ensemble ainsi formé présente une cylindrée plus grande et, permet de délivrer une puissance plus importante que si le premier moteur hydraulique était le seul à fonctionner. Il s'ensuit que, pour un même débit hydraulique, l'organe excentrique tourne moins vite et engendre des vibrations à une fréquence moins élevée.Indeed, when the two motors are mechanically coupled, the assembly thus formed has a larger displacement and can deliver greater power than if the first hydraulic motor was the only one to operate. It follows that for the same hydraulic flow, the eccentric member rotates less quickly and generates vibrations at a lower frequency.

De préférence, le dispositif vibreur comporte en outre un distributeur destiné à alimenter au moins l'un des deux moteurs hydrauliques.Preferably, the vibrator device further comprises a distributor for supplying at least one of the two hydraulic motors.

Grâce au distributeur, il est donc possible d'activer, ou désactiver, rapidement le deuxième moteur hydraulique afin de changer rapidement la fréquence des vibrations. Le dispositif vibreur selon l'invention est donc avantageusement réactif.Thanks to the distributor, it is therefore possible to quickly activate or deactivate the second hydraulic motor in order to change quickly the frequency of the vibrations. The vibrator device according to the invention is therefore advantageously reactive.

Encore de préférence, la cylindrée du premier moteur hydraulique est supérieure à la cylindrée du deuxième moteur hydraulique.Still preferably, the displacement of the first hydraulic motor is greater than the displacement of the second hydraulic motor.

Grâce à quoi, on peut disposer le deuxième moteur hydraulique entre le premier moteur hydraulique et le distributeur, le deuxième moteur hydraulique étant flanqué par des conduites hydrauliques pour l'alimentation du premier moteur hydraulique.With this, one can have the second hydraulic motor between the first hydraulic motor and the distributor, the second hydraulic motor being flanked by hydraulic lines for the supply of the first hydraulic motor.

L'invention vise en outre une machine de vibrocompactage comportant :

  • le dispositif vibreur selon l'invention ;
  • des moyens pour alimenter le dispositif vibreur en énergie hydraulique ; et
  • un châssis mobile supportant le dispositif vibreur selon une direction sensiblement verticale.
The invention is further directed to a vibro-compaction machine comprising:
  • the vibrating device according to the invention;
  • means for supplying the vibrator device with hydraulic energy; and
  • a mobile frame supporting the vibrating device in a substantially vertical direction.

Brève description des dessinsBrief description of the drawings

L'invention sera mieux comprise à la lecture de la description faite ci-après, à titre indicatif mais non limitatif, en référence aux dessins annexés, sur lesquels :

  • la figure 1 illustre une machine de vibrocompactage selon l'invention, dont le dispositif vibreur est enfoncé dans le sol ;
  • la figure 2 est une vue axiale en coupe du dispositif vibreur selon un premier mode de réalisation de l'invention ;
  • la figure 3 est une vue de détail du dispositif vibreur de la figure 2 , montrant l'agencement du moteur hydraulique;
  • la figure 4 est une vue de détail du dispositif vibreur selon un deuxième mode de réalisation de l'invention ;
  • la figure 5 est une vue de détail du dispositif vibreur selon une variante du deuxième mode de réalisation de l'invention ; et
  • la figure 6 est une vue de détail du dispositif vibreur selon un troisième mode de réalisation de l'invention.
The invention will be better understood on reading the description given below, by way of indication but without limitation, with reference to the appended drawings, in which:
  • the figure 1 illustrates a vibrocompacting machine according to the invention, the vibrator device is pressed into the ground;
  • the figure 2 is an axial sectional view of the vibrator device according to a first embodiment of the invention;
  • the figure 3 is a detail view of the vibrator device of the figure 2 , showing the arrangement of the hydraulic motor;
  • the figure 4 is a detail view of the vibrator device according to a second embodiment of the invention;
  • the figure 5 is a detail view of the vibrator device according to a variant of the second embodiment of the invention; and
  • the figure 6 is a detail view of the vibrator device according to a third embodiment of the invention.

Description détaillée de l'inventionDetailed description of the invention

Sur la figure 1 , on a représenté un exemple d'une machine de vibrocompactage 10 selon l'invention qui est utilisée dans cette configuration pour réaliser une opération de vibrocompactage.On the figure 1 An example is shown of a vibration compacting machine 10 according to the invention which is used in this configuration for realizing a vibration compacting operation.

Cette machine 10 comporte un bâti 12 monté sur chenilles 14 pour assurer son déplacement, ainsi qu'une potence 16 s'étendant en hauteur depuis le bâti 12. This machine 10 comprises a frame 12 mounted on tracks 14 to ensure its displacement, and a bracket 16 extending in height from the frame 12.

Plus précisément, la machine 10 comporte en outre un dispositif vibreur 18 monté à l'extrémité inférieure d'une pluralité de tubes 20 orientés verticalement tout en étant porté par l'extrémité 16a de la potence 16. More specifically, the machine 10 further comprises a vibrator device 18 mounted at the lower end of a plurality of tubes 20 oriented vertically while being carried by the end 16a of the bracket 16.

Le dispositif vibreur 18 présente la forme d'un cylindre long et fin dont la longueur est grande par rapport à son diamètre, l'extrémité inférieure du dispositif vibreur présentant une tête pour faciliter la pénétration dans le sol.The vibrating device 18 has the shape of a long and thin cylinder whose length is large relative to its diameter, the lower end of the vibrator device having a head to facilitate penetration into the ground.

Grâce à sa forme particulière, le dispositif vibreur 18 est apte à s'enfoncer dans un sol meuble, comme du sable, généralement uniquement sous l'effet de la force de pesanteur. On peut néanmoins si nécessaire appliquer un effort vertical complémentaire (communément appelé « pull down »).Due to its particular shape, the vibrator device 18 is able to sink into soft ground, such as sand, generally only under the effect of the force of gravity. However, it is nevertheless possible, if necessary, to apply a complementary vertical force (commonly called "pull down").

L'extrémité supérieure 20a de l'ensemble des tubes 20 est fixée à un câble 22 qui est guidé par un ensemble de poulies 24 disposées à l'extrémité 16a de la potence 16. The upper end 20 a of the set of tubes 20 is attached to a cable 22 which is guided by a set of pulleys 24 disposed at the end 16 a of the bracket 16.

Le déplacement du câble 22 est assuré dans notre exemple par un enrouleur motorisé 26, monté sur le bâti 12. On comprend que le câble 22 permet de faire remonter le dispositif vibreur et aussi de guider sa descente.The movement of the cable 22 is ensured in our example by a motorized reel 26, mounted on the frame 12. It will be understood that the cable 22 makes it possible to raise the vibrating device and also to guide its descent.

La machine 10 comporte en outre des moyens 28 pour alimenter la motorisation hydraulique du dispositif vibreur 18 en énergie hydraulique. En l'espèce, ces moyens 28 comprennent un enrouleur 30 de flexibles hydrauliques 32, ainsi qu'une source d'énergie hydraulique (non représentée).The machine 10 further comprises means 28 for supplying the hydraulic motorization of the vibrator device 18 with hydraulic energy. In the present case, these means 28 comprise a reel 30 of hydraulic hoses 32, and a source of hydraulic energy (not shown).

Comme on le voit sur la figure 1 , les flexibles hydrauliques 32 sont amenés, via une poulie 34 située à l'extrémité 16a de la potence, vers le dispositif vibreur 18 en s'étendant à l'intérieur des tubes 20. As we see on the figure 1 , the hydraulic hoses 32 are fed, via a pulley 34 located at the end 16 a of the bracket, to the vibrator device 18 extending inside the tubes 20.

Lorsque le dispositif vibreur 18 pénètre dans le sol S, il génère des vibrations V qui diffusent dans le sol.When the vibrator device 18 enters the ground S, it generates vibrations V that diffuse into the ground.

Bien évidemment, la figure 1 est schématique, le dispositif vibreur 18 pouvant effectivement atteindre une profondeur de l'ordre de plusieurs dizaines de mètres.Of course, the figure 1 is schematic, the vibrator device 18 can effectively reach a depth of the order of several tens of meters.

A l'aide de la figure 2 , on va maintenant décrire plus en détail un dispositif vibreur 100 selon un premier mode de réalisation de l'invention.Using the figure 2 , a vibrator device 100 according to a first embodiment of the invention will now be described in more detail.

Comme on le voit bien sur cette vue en coupe axiale, le dispositif vibreur 100 comporte un corps tubulaire 102 s'étendant longitudinalement selon l'axe A du dispositif vibreur 100. Ce corps tubulaire 102 présente une extrémité inférieure 102a ainsi qu'une extrémité supérieure 102b. L'extrémité inférieure 102a du corps tubulaire 102 porte une tête bombée 104 permettant de faciliter la pénétration du dispositif vibreur 100 dans le sol, tandis que l'extrémité supérieure 102b présente un organe de couplage 106 pour la fixation à l'extrémité inférieure de l'ensemble de tubes 20 précité. Du reste, le corps tubulaire 102 présente une surface intérieure 102c qui est ici cylindrique.As can be seen in this view in axial section, the vibrator device 100 comprises a tubular body 102 extending longitudinally along the axis A of the vibrating device 100. This tubular body 102 has a lower end 102a and one end. superior 102 b. The lower end 102a of the tubular body 102 carries a domed head 104 to facilitate the penetration of the vibrator device 100 into the ground, while the upper end 102b has a coupling member 106 for attachment to the lower end. of the set of tubes 20 mentioned above. Moreover, the tubular body 102 has an inner surface 102c which is cylindrical here.

Pour générer les vibrations, le dispositif vibreur 100 comporte en outre un organe excentrique 108 destiné à être entraîné en rotation autour de l'axe A par un moteur hydraulique 110. L'organe excentrique 108, connu par ailleurs, se présente ici sous la forme d'un cylindre dont une section est évidée. Cet organe excentrique 108 est maintenu et guidé à ses deux extrémités par deux roulements 112,114. To generate the vibrations, the vibrator device 100 further comprises an eccentric member 108 intended to be rotated about the axis A by a hydraulic motor 110. The eccentric member 108, known elsewhere, is here in the form of of a cylinder of which a section is hollowed out. This eccentric member 108 is held and guided at both ends by two bearings 112,114.

Le moteur hydraulique 110 est quant à lui classiquement alimenté par au moins deux conduites hydrauliques 116,118 qui s'étendent axialement tout en constituant le prolongement des flexibles hydrauliques 32. Trois conduites hydrauliques sont nécessaires si la fonction de drainage est assurée par une conduite séparée.The hydraulic motor 110 is in turn conventionally powered by at least two hydraulic lines 116,118 which extend axially while constituting the extension of the hydraulic hoses 32. Three hydraulic lines are necessary if the drainage function is provided by a separate pipe.

En se référant à la figure 3 , on va maintenant décrire plus en détail le moteur hydraulique 110 du dispositif vibreur 100 dans son premier mode de réalisation.Referring to the figure 3 , Will be described in more detail the hydraulic motor 110 of the vibrator 100 in the first embodiment.

Ce moteur hydraulique 110, en l'espèce un moteur du type à pistons axiaux 120, comporte un rotor 122 qui est fixé solidairement à un arbre de transmission axial 124, ce dernier étant quant à lui couplé à l'organe excentrique 108. This hydraulic motor 110, in this case a motor of axial piston type 120, comprises a rotor 122 which is integrally fixed to an axial transmission shaft 124, the latter being in turn coupled to the eccentric member 108.

Le rotor 122 présente la forme d'un barillet dans lequel les pistons axiaux 120 peuvent se déplacer axialement.The rotor 122 has the shape of a cylinder in which the axial pistons 120 can move axially.

De manière connue, sous l'effet de la pression hydraulique, les pistons axiaux 120 se déplacent axialement tout en prenant appui contre une came inclinée 126, ce qui provoque leur rotation, ainsi que celle du rotor 122, autour de l'axe A. In known manner, under the effect of the hydraulic pressure, the axial pistons 120 move axially while bearing against an inclined cam 126, causing their rotation, as well as that of the rotor 122, about the axis A.

Comme on le voit sur la figure 3 , le stator 128 du moteur hydraulique 110 est avantageusement constitué par le corps tubulaire 102, ce qui permet, pour un corps tubulaire donné, de disposer un rotor ayant une cylindrée plus importante que lorsque l'on utilise un moteur hydraulique complet du commerce, grâce à quoi on dispose d'une puissance plus importante.As we see on the figure 3 , the stator 128 of the hydraulic motor 110 is advantageously constituted by the tubular body 102, which allows, for a given tubular body, to have a rotor having a larger displacement than when using a complete hydraulic motor trade, thanks to which one has more power.

Le rotor 122 est guidé en rotation grâce à deux paliers 130,132 disposés entre le rotor 122 et la surface intérieure 102c du corps tubulaire 102. Il est à noter que l'on pourrait tout à fait n'utiliser que le palier 130 par exemple. Plus précisément, on constate dans ce mode de réalisation que les paliers 130,132 prennent directement appui sur la surface intérieure 102c. The rotor 122 is guided in rotation by two bearings 130, 132 disposed between the rotor 122 and the inner surface 102c of the tubular body 102. It should be noted that one could quite use only the bearing 130 for example. More specifically, it is found in this embodiment that the bearings 130,132 bear directly on the inner surface 102c.

Sur cette figure, on voit également que le palier 130 prend appui contre un épaulement 140 formé dans l'épaisseur du bord périphérique du corps tubulaire 102. On comprend donc que le corps tubulaire 102, en tant que stator, permet également de réaliser le blocage axial des éléments tournants du moteur hydraulique 110. In this figure, we also see that the bearing 130 bears against a shoulder 140 formed in the thickness of the peripheral edge of the tubular body 102. It is therefore understood that the tubular body 102, as a stator, also allows the blocking axial rotation of the hydraulic motor 110.

Par ailleurs, le moteur hydraulique 110 comprend en outre une culasse 142 qui est montée à une extrémité longitudinale du rotor 122, en l'espèce son extrémité supérieure 144. Selon un aspect avantageux, la culasse 142 présente un diamètre sensiblement égal au diamètre intérieur du corps tubulaire 102, grâce à quoi la culasse 142, éventuellement à l'aide d'un joint 146, permet de réaliser l'étanchéité entre la chambre contenant les paliers 130,132 et l'extrémité supérieure de l'intérieur du corps tubulaire 102. Furthermore, the hydraulic motor 110 further comprises a yoke 142 which is mounted at a longitudinal end of the rotor 122, in this case its upper end 144. According to an advantageous aspect, the yoke 142 has a diameter substantially equal to the inside diameter of the tubular body 102, whereby the yoke 142, possibly with a seal 146, allows sealing between the chamber containing the bearings 130,132 and the upper end of the inside of the tubular body 102.

A l'aide de la figure 4 , on va maintenant décrire un deuxième mode de réalisation du dispositif vibreur 200 selon l'invention.Using the figure 4 , Will now be described a second embodiment of the vibrator device 200 of the invention.

Ce deuxième mode de réalisation du dispositif vibreur 200 diffère du premier mode de réalisation par le fait qu'il comporte en outre un manchon 202 de forme générale cylindrique s'étendant, dans cet exemple, axialement entre les paliers 114 de l'organe excentrique 108 et la culasse 142. This second embodiment of the vibrator device 200 differs from the first embodiment in that it further comprises a sleeve 202 of generally cylindrical shape extending, in this example, axially between the bearings 114 of the eccentric member 108 and the breech 142.

Ce manchon 202 entoure le rotor 122 en étant disposé radialement entre les paliers 130, 132 et la surface intérieure 102c du corps tubulaire 102. This sleeve 202 surrounds the rotor 122 being arranged radially between the bearings 130, 132 and the inner surface 102c of the tubular body 102.

Sur la figure 5 , on a représenté un dispositif vibreur 300 dans une variante du deuxième mode de réalisation précité.On the figure 5 , there is shown a vibrator device 300 in a variant of the second embodiment above.

Dans cette variante, le corps tubulaire 302 est constitué d'une première partie 302a et d'une deuxième partie 302b, ces deux parties étant distinctes et présentant de préférence sensiblement le même diamètre.In this variant, the tubular body 302 consists of a first portion 302a and a second portion 302b , these two portions being distinct and preferably having substantially the same diameter.

Comme on le voit, l'organe excentrique 108 est logé dans la première partie 302a, tandis que la deuxième partie 302b loge le moteur hydraulique 110 et les conduites hydrauliques 116,118. As can be seen, the eccentric member 108 is housed in the first portion 302a , while the second portion 302b houses the hydraulic motor 110 and the hydraulic lines 116, 118.

La première partie 302a est fixée à la deuxième partie 302b par l'intermédiaire d'un manchon 304 similaire au manchon 202 précité.The first portion 302a is attached to the second portion 302b through a sleeve 304 similar to the aforementioned sleeve 202 .

Pour ce faire, le manchon 304 comprend des premiers moyens de fixation 306 disposés à une extrémité inférieure 304a du manchon 304 pour la fixation à la première partie 302a, et des seconds moyens de fixation 308 disposés sur la surface extérieure 304b du manchon 304 pour sa fixation à l'extrémité inférieure de la deuxième partie 302b du corps tubulaire 302. To do this, the sleeve 304 comprises first attachment means 306 disposed at a lower end 304a of the sleeve 304 for attachment to the first portion 302a , and second attachment means 308 disposed on the outer surface 304b of the sleeve 304 for attachment to the lower end of the second portion 302b of the tubular body 302.

Le manchon 304 comporte en outre une portion cylindrique 310 destinée à être introduite dans la deuxième partie 302b du corps tubulaire 302. Pour cela, le diamètre extérieur de cette portion cylindrique 310 correspond sensiblement au diamètre intérieur de la deuxième partie 302b du corps tubulaire 302. The sleeve 304 further comprises a cylindrical portion 310 intended to be introduced into the second portion 302b of the tubular body 302. For this, the outside diameter of this cylindrical portion 310 corresponds substantially to the inside diameter of the second portion 302b of the tubular body 302.

Comme on le voit sur la figure 5 , l'épaisseur de la paroi 312 de la portion cylindrique 310 est choisie assez fine pour permettre de maximiser le volume disponible pour le rotor 122. As we see on the figure 5 , the thickness of the wall 312 of the cylindrical portion 310 is chosen to be fine enough to maximize the volume available for the rotor 122.

Par ailleurs, dans ce mode de réalisation, la culasse 142 prend radialement appui sur la paroi de la portion cylindrique 310. Moreover, in this embodiment, the yoke 142 is radially supported on the wall of the cylindrical portion 310.

Dans cette variante, la came inclinée 314, sur laquelle les extrémités des pistons axiaux 120 prennent appui, forme avantageusement une seule pièce avec le manchon 304. In this variant, the inclined cam 314, on which the ends of the axial pistons 120 bear, advantageously forms a single piece with the sleeve 304.

Grâce à ce montage, on comprend qu'il est facile de changer l'organe excentrique 108 et le rotor 122 en démontant le manchon 304. With this arrangement, it is understood that it is easy to change the eccentric member 108 and the rotor 122 by disassembling the sleeve 304.

A l'aide de la figure 6 , on va maintenant décrire un troisième mode de réalisation de l'invention du dispositif vibreur.Using the figure 6 We will now describe a third embodiment of the invention of the vibrator device.

Dans ce mode de réalisation, le dispositif vibreur 400 comporte un premier moteur hydraulique 402 semblable au moteur hydraulique 110 du premier mode de réalisation, dont le rotor 122 est couplé à un arbre de transmission 404, ce dernier étant relié à l'organe excentrique 108. In this embodiment, the vibrator device 400 comprises a first hydraulic motor 402 similar to the hydraulic motor 110 of the first embodiment, whose rotor 122 is coupled to a transmission shaft 404, the latter being connected to the eccentric member 108 .

Avantageusement, le dispositif vibreur 400 comporte en outre un deuxième moteur hydraulique 406, distinct du premier moteur hydraulique 402, qui est couplé à l'arbre de transmission 404. Comme on le voit sur la figure 6 , l'arbre de sortie 408 du deuxième moteur hydraulique 406 s'étend également selon l'axe A et coopère avec l'extrémité supérieure 404a de l'arbre de transmission 404. Advantageously, the vibrator device 400 further comprises a second hydraulic motor 406, distinct from the first hydraulic motor 402, which is coupled to the transmission shaft 404. As can be seen in FIG. figure 6 , the output shaft 408 of the second hydraulic motor 406 also extends along the axis A and cooperates with the upper end 404a of the transmission shaft 404.

Selon l'invention, le deuxième moteur hydraulique 406 est donc apte à être couplé avec le premier moteur hydraulique 402 afin de fournir une puissance supplémentaire à l'arbre de transmission 404. Il en résulte à débit hydraulique égal une diminution de la fréquence des vibrations générées par l'organe excentrique 108. According to the invention, the second hydraulic motor 406 is thus able to be coupled with the first hydraulic motor 402 in order to provide additional power to the transmission shaft 404. This results in a hydraulic flow equal to a reduction in the frequency of the vibrations generated by the eccentric member 108.

Pour l'alimentation des deux moteurs hydrauliques, le dispositif vibreur 400 comporte un distributeur 410 connecté d'une part aux conduites hydrauliques 116,118, et à chacun des deux moteurs d'autre part.For the supply of the two hydraulic motors, the vibrator device 400 comprises a distributor 410 connected on the one hand to the hydraulic lines 116, 118, and to each of the two engines on the other hand.

Le distributeur 410 est commandable de sorte que l'opérateur peut choisir d'activer ou non le deuxième moteur hydraulique 406. The dispenser 410 is controllable so that the operator can choose to activate or not the second hydraulic motor 406.

On voit aussi que la cylindrée du deuxième moteur hydraulique est de préférence plus petite que celle du premier moteur hydraulique 402, grâce à quoi, notamment, les conduites d'alimentation 412,414 sortant du distributeur et destinées à alimenter le premier moteur hydraulique s'étendent axialement autour du deuxième moteur hydraulique.It can also be seen that the displacement of the second hydraulic motor is preferably smaller than that of the first hydraulic motor 402, thanks to which, in particular, the supply lines 412,414 coming out of the distributor and intended to supply the first hydraulic motor extend axially. around the second hydraulic motor.

Le deuxième moteur hydraulique 406 peut par exemple être actionné à la demande afin de modifier ponctuellement la fréquence des vibrations générées.The second hydraulic motor 406 can for example be actuated on demand in order to change the frequency of the vibrations generated.

Claims (11)

  1. A vibrator device (18, 100, 200, 300, 400) for a vibration compacting machine (10), said device comprising:
    • a tubular body (102, 302) extending longitudinally while presenting a bottom end (102a);
    • at least a first hydraulic motor (110, 402) disposed in the tubular body and comprising a rotor (122) rotatably mounted in a stator-forming casing (102); and
    • an eccentric member (108) arranged inside the tubular body between the bottom end and the first hydraulic motor, said eccentric member being designed to be driven in rotation by the rotor of the first hydraulic motor in order to produce vibration;
    said vibrator device being characterized in that the casing of the first hydraulic motor is constituted by the tubular body (102).
  2. A vibrator device according to claim 1, characterized in that the first hydraulic motor further includes at least one bearing (130, 132) arranged between the rotor (122) and an inside surface (102c) of the tubular body (102).
  3. A vibrator device according to claim 2, characterized in that the bearing (130, 132) bears directly against the inside surface of the tubular body.
  4. A vibrator device according to claim 2, characterized in that it further includes a sleeve (202, 304) arranged between the bearing (130, 132) and the inside surface of the tubular body (102, 302).
  5. A vibrator device according to claim 4, characterized in that the sleeve (304) includes a sealing member for providing sealing between the rotor and the eccentric member.
  6. A vibrator device according to claim 4 or claim 5, characterized in that the tubular body (302) is constituted by a first portion (302a) in which the eccentric member (108) is housed, and a second portion (302b), distinct from the first portion, in which at least a portion of the rotor (122) of the first hydraulic motor (110) is housed, and in that the first portion is securely fastened to the second portion by means of the sleeve (304).
  7. A vibrator device according to any one of claims 1 to 6, characterized in that the first hydraulic motor (110) further includes a yoke (142) mounted at one longitudinal end of the rotor, said yoke having a diameter that is substantially equal to the inside diameter of the tubular body.
  8. A vibrator device according to any one of claims 1 to 7, characterized in that it further includes a second hydraulic motor (406) arranged inside the tubular body while being designed to be coupled to the first hydraulic motor (402).
  9. A vibrator device according to claim 8, characterized in that it further includes a distributor (410) for feeding at least one of the two hydraulic motors (402, 406).
  10. A vibrator device according to claim 8 or claim 9, characterized in that the cylinder capacity of the first hydraulic motor (402) is greater than the cylinder capacity of the second hydraulic motor (406).
  11. A vibration compacting machine (10) comprising:
    • a vibrator device (18, 100, 200, 300, 400) according to any one of claims 1 to 10;
    • means (28) for feeding hydraulic energy to the vibrator device; and
    • a movable structure (12) supporting the vibrator device in a substantially vertical direction.
EP10706021.2A 2009-01-30 2010-01-14 Vibrating device powered by hydraulic motor for a vibrocompacting machine Not-in-force EP2393990B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0950621A FR2941714B1 (en) 2009-01-30 2009-01-30 VIBRATOR DEVICE WITH HYDRAULIC MOTORIZATION FOR VIBRO COMPACT MACHINE.
PCT/FR2010/050055 WO2010086537A1 (en) 2009-01-30 2010-01-14 Hydraulically driven vibrating device for a vibratory compacting machine

Publications (2)

Publication Number Publication Date
EP2393990A1 EP2393990A1 (en) 2011-12-14
EP2393990B1 true EP2393990B1 (en) 2016-01-13

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EP10706021.2A Not-in-force EP2393990B1 (en) 2009-01-30 2010-01-14 Vibrating device powered by hydraulic motor for a vibrocompacting machine

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US (1) US8382397B2 (en)
EP (1) EP2393990B1 (en)
CA (1) CA2750932C (en)
FR (1) FR2941714B1 (en)
HK (1) HK1159711A1 (en)
SG (1) SG173166A1 (en)
WO (1) WO2010086537A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014019138A1 (en) * 2014-12-23 2016-06-23 Rsm Grundbau Gmbh + Willi Meyer Bauunternehmen Gmbh In Gbr Vibration damper for a coupling joint of a deep vibrator
EP3517687B1 (en) * 2018-01-26 2020-08-05 Keller Holding GmbH Method for compaction detection and control when compacting soil using deep vibrator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2340959A (en) * 1940-08-03 1944-02-08 Philip E Harth Recovery of pipe
US2717763A (en) * 1951-04-03 1955-09-13 Jr Albert G Bodine Earth boring apparatus with acoustic decoupler for drilling mud
US3309877A (en) * 1960-09-07 1967-03-21 Degen Wilhelm Vibrator for compacting soil
JPS52130124A (en) * 1976-04-23 1977-11-01 Sakura Denki Kk Concrete oscillator
US4397588A (en) * 1981-01-23 1983-08-09 Vibroflotation Foundation Company Method of constructing a compacted granular or stone column in soil masses and apparatus therefor
CA2348332A1 (en) * 2000-05-24 2001-11-24 William E. Hodge Method and apparatus for improving the structure of saturated masses of granular materials
DE10232314A1 (en) * 2002-07-17 2004-02-05 Bauer Spezialtiefbau Gmbh Vibrating boring tool for hard ground layers has an additional axial vibrator in the driving tip
DE202007012140U1 (en) * 2007-08-27 2007-11-29 Möller, Heiner, Dipl.-Ing. Shock wave compressor

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FR2941714A1 (en) 2010-08-06
US20110318103A1 (en) 2011-12-29
CA2750932A1 (en) 2010-08-05
US8382397B2 (en) 2013-02-26
EP2393990A1 (en) 2011-12-14
SG173166A1 (en) 2011-08-29
WO2010086537A1 (en) 2010-08-05
CA2750932C (en) 2016-07-12
HK1159711A1 (en) 2012-08-03
FR2941714B1 (en) 2015-01-02

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