EP0901541B1 - Dispositif de compaction - Google Patents

Dispositif de compaction Download PDF

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Publication number
EP0901541B1
EP0901541B1 EP98919116A EP98919116A EP0901541B1 EP 0901541 B1 EP0901541 B1 EP 0901541B1 EP 98919116 A EP98919116 A EP 98919116A EP 98919116 A EP98919116 A EP 98919116A EP 0901541 B1 EP0901541 B1 EP 0901541B1
Authority
EP
European Patent Office
Prior art keywords
roller
drive
vibration
frame
extension
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.)
Expired - Lifetime
Application number
EP98919116A
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German (de)
English (en)
Other versions
EP0901541A1 (fr
Inventor
Reinhold Straus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hugo Wupper & Co KG GmbH
Lobbe & Co GmbH
Original Assignee
Hugo Wupper & Co KG GmbH
Lobbe & Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hugo Wupper & Co KG GmbH, Lobbe & Co GmbH filed Critical Hugo Wupper & Co KG GmbH
Publication of EP0901541A1 publication Critical patent/EP0901541A1/fr
Application granted granted Critical
Publication of EP0901541B1 publication Critical patent/EP0901541B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E02D3/026—Improving by compacting by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers
    • E02D3/032—Trench rollers

Definitions

  • the invention relates to a compression device with at least one in a roller held by a guide frame with a mobile device is connected via a vertical joint, the between the vertical joint mobile device and the roller a moving device for the roller is arranged.
  • So-called single drum rollers are mainly used on landfills consist of a vehicle whose front wheels are driven by a vibratory roller are replaced.
  • the vibratory roller is enclosed by a closed frame held, which is connected to the vehicle via a vertical joint in order to this way to be able to perform steering movements.
  • It's without a roller Vehicle is not roadworthy because the vehicle weight is on the vibratory roller and rear wheels distributed.
  • the drive takes place via the rear wheels and / or via the vibrating roller, which additionally has a further drive in order to to be able to perform the vibratory movements.
  • Such single drum rollers can only be used up to certain gradients because otherwise the single drum roller could tip over, which Represents a source of danger for the driver. If the slope of a landfill dump is too steep, an additional security vehicle must be used, the stabilized the single drum roller on the embankment. For this, the Security vehicle posted above the single drum on the embankment, by where the single drum roller is secured by a winch. This Procedure has the disadvantage, however, that in a lane Compacting the slope not only the single drum roller, but also that Security vehicle must be relocated.
  • landfill sites cannot be optimal in terms of space be used because embankments are not created or compacted steep enough can be.
  • the object of the invention is to provide a device with small Roller and vehicle masses enables high compaction forces with reduced operating costs and works with the previously inaccessible Compact surfaces: can.
  • the compacting device is characterized in that the roller is a Vibratory roller is the one with a hydraulic vibratory drive and one hydraulic travel drive, of which the travel drive is optional can be switched to idling and driving, the idle Hydraulic oil from the traction drive is circulated for lubrication.
  • a vibratory roller has the advantage that the line load the roller is enlarged many times over a static roller can be, so that on a special, large and therefore difficult to dimension mobile device can be dispensed with. Even the mass of the Vibratory roller can be reduced.
  • the own travel drive has the advantage that it is particularly steep Embankments can be switched on, which is unfavorable Terrain conditions only allow their densification.
  • the interpretations of the Travel drive as a hydraulic drive offers the advantage that when the Travel drive is not needed, d. H. when the vibratory roller is idling is operated, no wear to the roller bearing occurs because that Hydraulic oil is circulated for lubrication.
  • the rolling or driving movement is in this case exclusively by the actuator and / or accomplished by moving the mobile device.
  • the vehicle can, for example, at the foot of a slope or on a plateau be placed over an embankment, from where the compaction of the Steep slopes can be made without the vehicle itself over the Slope must be moved.
  • the dangers for the operating personnel are this significantly reduces and additional security vehicles are not required.
  • the vibratory roller can be moved by the movement device without their own drive. It there is also the possibility of using the vibratory roller with its own Equip travel drive and the movement device at idle too operate. According to the third possibility, the movement of the Movement device supported by the drive of the vibratory roller become.
  • the vibration drive is preferably a continuously adjustable one hydraulic reduction gear upstream. Such a reducer is then necessary if they are required to drive the vibratory roller Oil levels differ from that of the pump of the mobile device delivered amount differs. This has the advantage that different types of rollers with different mobile devices can be easily combined. There are only minor ones Adjustment measures on the reduction gear required. Instead of one Reducer can also be used a flow divider.
  • the vibrating roller is preferably provided with a fork-shaped frame connected to the movement device.
  • a fork-shaped frame offers the Advantage that there are no disruptive components in front of the vibrating roller. This allows embankments to be compacted without the Frame on the ground. Furthermore, narrow troughs are accessible, what was previously not possible with a surrounding frame.
  • the movement device preferably has at least one two-part Boom with actuation devices for extending and retracting the boom on.
  • Such an at least two-part boom can be, for example Telescopic boom or a boom that has at least two arms. which are pivotally connected to one another via at least one horizontal axis are.
  • the boom on the mobile device can also move around a horizontal axis can be pivoted.
  • This swiveling storage is preferably on the vertical joint of the mobile device arranged.
  • the boom has at least a first and a second actuator.
  • the frame is preferably around a horizontal one Axis pivotally attached to the movement device. This is another (third) between the boom and the frame Actuator provided.
  • the pivot axis of the frame is preferably arranged at a distance from the axis of rotation of the vibratory roller, whereby a swinging bearing of the vibratory roller is created. ever after the distance between the two axes, one can do more with the vibrating roller or less large area can be compacted without the boom itself must be moved. A slight movement in the first swivel axis takes place.
  • the frame of the vibratory roller is suspended from the boom preferably via a 4-point joint, the 4-point joint being the third Has actuator.
  • a single vibrating roller is preferably provided on the frame, it is however not excluded, for special applications also two or more vibratory rollers next to each other or in a tandem arrangement to be provided in a row.
  • the roller can be with a flat or with a Ramming foot bandage must be provided, depending on which material is compacted shall be.
  • an auxiliary motor is preferably provided on the mobile device.
  • This Motor can be used for the vibration drive device and / or the Travel drive device for the vibration roller may be provided.
  • the mobile device is the other A counterweight is provided on the side facing away from the movement device this additional motor is mounted.
  • the attachment is preferably via Centering pin and screw connections.
  • the mobile device can be equipped with chains or wheels, for example his.
  • At least one elastic buffer be arranged between the guide frame and one with the second arm connected adapter.
  • This buffer has the task of vibrating and To break structure-borne sound bridge to the mobile device.
  • FIG. 1 shows a mobile device 10 in the form of a caterpillar vehicle shown, on which a movement device 20 is arranged, at the free end of a vibrating roller 60 is attached.
  • the mobile device 10 is located on a plateau 2, from where the slope 1 by means of Vibrating roller 60 is processed.
  • the mobile device 10 has an undercarriage equipped with chains 11, on which a bogie 12 is rotatably supported about a vertical axis 14 is.
  • a bogie 12 On the bogie 12 are a driver's cabin 13 and the associated drive devices for the mobile device arranged.
  • a counterweight 15 is attached to the rear of the bogie. If necessary, can at the rear of the bogie 12, an additional motor 16 are attached, which then has the task of driving the vibratory roller 60 via an oil line.
  • the movement device 20 is attached to the bogie 12 is pivotable about a first horizontal pivot axis 32.
  • the movement device 20 consists of a boom 21, which in the here embodiment shown has a total of two arms 22 and 23 which around first and second horizontal axes 32 and 33 are pivotable are interconnected. There are two for moving the boom 21 Actuators 28 and 29 provided in the form of lifting cylinders, the first lifting cylinder 28 being articulated on the bogie 12. It is also possible to provide three Anne.
  • the boom 21 is thus a total of about the first pivot axis 32 arranged pivotably and about the pivot axis 33 are different Positions of the individual arms 22 and 23 to each other possible.
  • the vibration roller 60 is via a 4-point joint (Pivot points 34, 35, 36 and 37), one Quick-change device 40, an adapter 41 and the guide frame 42 connected.
  • a scraper 50 is attached to the front end of the guide frame 42 a bracket 51 attached. This scraper is used in conjunction with the Fig. 3 explained in more detail.
  • the guide frame 42 which in connection with FIG. 2 even closer is described is fork-shaped and extends in the here shown in the direction of the mobile device 10.
  • This frame 42nd with associated vibration roller 60 is about the third pivot axis 34 pivoted so that an additional when the boom 21 is extended Movement of the vibratory roller 60 is possible.
  • This movement is caused by the third actuating device 30, which is also a lifting cylinder, accomplished, in the common pivot point 37 on the pivot lever 25th and the connecting rod 26 is articulated.
  • the distance of the third Pivot axis 34 from the axis of rotation 67 of the vibrating roller 60 is in the essentially determined by the length of the guide frame 42.
  • the vibratory roller is shown in detail.
  • the guide frame 42 is attached, the connecting element 43 and has a crossmember 44 to which lateral frame parts 45a and 45b are attached are.
  • the Vibrating roller 60 which is equipped with a padfoot drum 61, but also can be equipped with a flat bandage.
  • the inner structure of the Vibratory roller 60 is known per se from the prior art.
  • the Connection from the side frame parts 45a, 45b to the vibrating roller 60 takes place on the side of the drive 64 via the roller traverses 62a, b and the vibrating elements 63a, b and on the vibration drive 66 side the cross members 68a and 68b and the oscillating elements 63c and 63d.
  • the Andes lateral frame parts 45a, b fastened trusses 68a, b and 62a, b as stationary parts and those located between the oscillating elements 63a-d Parts are called vibrating parts.
  • the vibrating parts In particular, the vibrating roller 60 is operated by the vibrator 65 moves, which leads to the known compaction effect of the soil.
  • the Travel drive 64 is via oil lines 70a, 70b with an associated one Drive device connected. Accordingly, the Vibrating drive 66 via oil lines 71a and 71b with one Drive device connected. All oil lines 70a.b, 71a, b can For example, be connected to the auxiliary motor 16 when one of the Motor of the mobile device 10 wants to be independent.
  • the driving operation of the vibratory roller 60 can be performed.
  • the roller can move to or from the mobile device 10 move away (see Fig. 1).
  • the lifting cylinder 30 for the movement of the 4-point joint can remain blocked and the lifting cylinders 29 and 28 can move in Float position, i.e. both piston sides of the Actuators 28 and 29 are relieved.
  • the boom 21 can thus Bend upwards via axes 32 and 33.
  • the Contact pressure of the vibrating roller 60 by the dead weight of the Boom 21 and the accessories of the vibratory roller 60 increased.
  • the vibrating roller 60 can also be moved in that the Movement device 20 is extended and extended, what about the operation the lifting cylinder 28 and 29 takes place. By actuating the lifting cylinder 30 the orientation of the lead frame 42 can be maintained. In this In this case, the vibrating roller 60 or its driver 64 would be idle operate.
  • the oil lines 70a coupled with each other and the oil in the drive 64 is at a Roller movement is pumped in the circuit and acts as lubrication.
  • traction drive 64 has only the function of a bearing.
  • roller movement can be with and without Roller drive to and from the mobile device 10
  • the articulation point 34 only needs the help of the boom 21 in accordance with FIG. 1 at an appropriate height from the floor or be extended.
  • the guide frame 42 with the vibrating roller 60 is in shown different pivot positions.
  • a wiper holder 51 is arranged at right angles, to which a first stripper 50 is attached.
  • a corresponding bracket is also arranged on the other side frame part 45b, which in the here shown representation is not seen.
  • the stripper 50 extends over the entire roller width.
  • a second one Scraper 52 attached to a scraper holder 53.
  • the arrangement of the Scraper 50, 52 is selected as shown in the illustration on the right, that even in this extreme swivel position when stripping no Soil can accumulate on the vibratory roller 60.
  • There are two wipers 50.52 is provided to allow the vibratory roller when rotating in two directions is moved, can be cleaned.
  • Figs. 4a-c is the compacting device in various Working positions shown. 4a, the mobile device is on one Plateau 2 is positioned and the boom 21 is in the folded position. In front of the mobile device 10 is an embankment 1, which on lower end into a trough 4 and then into a depression 3. In the Fig. 4b it can be seen that the boom 21 has been extended, the Vibrating roller 60 drove from top to bottom over the slope 1. is. In order to also be able to compact the trough 4, the 4-point hinge is used the guide frame 42 has been brought into a vertical position, so that the vibratory roller 60 unhindered by any components in the Trough 4 can be retracted. It is not in this process required that the mobile device be moved.
  • the compression of the Embankment 1 can be done by driving the vibratory roller 60 with the vibration drive switched on and in the floating position Cylinders 28 and 29 is actuated or that the boom 21 is moved and the drive of the vibratory roller is operated at idle.
  • FIG. 4c Another situation is shown in FIG. 4c, in which the mobile Device 10 is in a depression 3 and the embankment 1 from below to be processed.
  • the way of working corresponds to the way of working, which in connection with FIGS. 4a and 4b.
  • To add is that even with the boom 21 extended due to the Pivotability of the guide frame 42 also the upper part of the Embankment 1 and possibly parts of the plateau 2 can be processed.
  • FIG. 5 shows the device according to a further embodiment shown.
  • the second Ann 23 is the Guide frame 42 rigidly attached.
  • the 4-point joint shown in FIG. 1 with the associated actuating device is omitted. It becomes one realized particularly simple design.
  • FIG. 6 A detailed illustration of the additional motor 16 can be seen in FIG. 6.
  • the counterweight 15 At the Undercarriage 11, of which only the frame is shown, is on rear end of the counterweight 15 is arranged.
  • the counterweight 15 On this counterweight 15 are arranged on the top centering pin 17 into which the additional motor 16 is hung with its housing. If there is no counterweight, then the auxiliary motor can also be attached to a suitable frame part at the rear become. Eyelets 18a are provided on the top of the housing for assembly purposes and 18b.
  • the centering pin 17 In addition to the attachment to the centering pin 17 are one or more in the lower region of the counterweight 15 Screws 72 provided. These fittings are through one Opening 19 in the housing of the additional motor 16 accessible.
  • Fig. 7 shows a hydraulic diagram for a continuously adjustable, hydraulic Reduction gear 80.
  • a reduction gear is necessary if the amount of oil required for the drive 66 of the vibratory roller distinguish the excavator pump 5.
  • the motor 81 which has an adjusting member 83 is connected to the pump 82.
  • the actuator can operate on the principle of infinitely variable speed adjustment or according to the principle of Working swallowing volume adjustment. Both versions lead to the fact that Flow ratio of motor 81 to pump 82 to the required Amount can be adjusted.
  • the partial flow received by the pump 82 is the motor 66, the Vibratory drive drives, fed via line 71a and via the line 71b and the line 9 together with that coming from the damming valve 84 Quantity of oil passed into the oil tank 85.
  • pressure x flow rate in motor 81 pressure x applies Flow rate in pump 82.
  • a flow divider can also be used become.
  • rubber buffers 46 can be between the frame 42 and an adapter 41 '. which is connected to a second arm 23 and a connecting rod 26 is to be provided.
  • These buffers are responsible for the structure-borne noise and vibration bridge between the vibrating roller 60 and the mobile device interrupt and compensate for side canting during use.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Agronomy & Crop Science (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Paving Machines (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Glass Compositions (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (23)

  1. Dispositif de densification ou de compression, comprenant au moins un rouleau maintenu dans un bâti de guidage et relié à un engin mobile par l'intermédiaire d'une articulation verticale, du type selon lequel, entre l'articulation verticale de l'engin mobile et ledit rouleau, est disposé un système de mise en mouvement pour ledit rouleau, caractérisé en ce que ledit rouleau est un rouleau vibrant (60), qui est équipé d'une commande hydrostatique génératrice de vibrations (66) et d'une commande (64) de déplacement par roulage, ladite commande (64) étant commutable au choix entre les régimes de marche à vide et de déplacement par roulage, le fluide hydraulique de ladite commande (64) circulant, en régime de marche à vide, à des fins de lubrification.
  2. Dispositif selon la revendication 1, caractérisé en ce que le rouleau vibrant (60) est relié par l'intermédiaire d'un bâti (42), en forme de fourche, au système de mise en mouvement (20).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le système de mise en mouvement (20) présente une flèche (21) en au moins deux parties, comprenant des organes d'actionnement pour la mise en marche et l'arrêt de la flèche (21).
  4. Dispositif selon l'une des revendications là 3, caractérisé en ce que la flèche (21) est une flèche téléscopique.
  5. Dispositif selon la revendication 3, caractérisé en ce la flèche (21) présente au moins deux bras (22, 23), qui sont reliés entre eux avec pivotement autour d'au moins un axe horizontal (33).
  6. Dispositif selon l'une des revendications 3 à 5, caractérisé en ce que la flèche (21) est montée avec pivotement autour d'un axe horizontal (32) par rapport à l'engin mobile (10).
  7. Dispositif selon l'une des revendications 5 ou 6, caractérisé en ce que la flèche (21) présente au moins un premier ou un second organe d'actionnement (28, 29) pour assurer le pivotement des bras (22, 23).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que le bâti (42) est fixé au système de mise en mouvement (20) en étant susceptible de pivoter autour d'un axe horizontal (34).
  9. Dispositif selon la revendication 8, caractérisé en ce que l'axe horizontal (34) est espacé de l'axe de rotation (67) du rouleau vibrant (60).
  10. Dispositif selon l'une des revendications 8 ou 9, caractérisé en ce que le bâti (42) est relié à l'extrémité libre du système de mise en mouvement (20) par une articulation à 4 points.
  11. Dispositif selon la revendication 10, caractérisé en ce que l'articulation à 4 points comprend son propre organe d'actionnement (30) (troisième organe d'actionnement).
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que le rouleau vibrant (60) est muni d'une enveloppe ou garniture externe (61), plane ou à pilettes ou éléments de damage.
  13. Dispositif selon l'une des revendications 1 à 12, caractérisé en ce qu'au voisinage du bâti de guidage (42) est disposé au moins un élément séparateur de protection (50, 52), qui s'étend au dessus du rouleau vibrant (60).
  14. Dispositif selon la revendication 13, caractérisé en ce que pour chaque sens de rotation du rouleau vibrant (60) est prévu un élément séparateur (50, 52) de protection.
  15. Dispositif selon l'une des revendications 13 ou 14, caractérisé en ce que les éléments séparateurs (50, 52) de protection sont fixés sur des faces antagonistes du bâti de guidage (42).
  16. Dispositif selon la revendication 14 ou 15, caractérisé en ce que sont montés un premier élément séparateur (50) de protection, à l'avant de l'axe de rotation (67) du rouleau vibrant (60), et un second élément séparateur (52) de protection en arrière dudit axe de rotation.
  17. Dispositif selon l'une des revendications 14 à 16, caractérisé en ce que les éléments séparateurs (50, 52) de protection sont fixés aux porte- éléments séparateurs de protection (51, 53), en disposition antagoniste et avec un espacement tel que, aux deux positions extrêmes de organe d'actionnement (30), aucun matériau ne vienne buter sur le rouleau vibrant (60) lors du processus de mise en action dans les deux sens de parcours.
  18. Dispositif selon l'une des revendications 13 à 17, caractérisé en ce qu'entre les éléments séparateurs (50, 52) de protection et les porte- éléments séparateurs de protection (51, 53) associés, est disposé chaque fois au moins un amortisseur élastique (54) .
  19. Dispositif selon l'une des revendications 1 à 18, caractérisé en ce que sur l'engin mobile (10) est disposé un moteur d'appoint (16) pour le système de commande génératrice de vibrations et/ ou un système de commande de déplacement pour le rouleau vibrant (60).
  20. Dispositif selon la revendication 19, caractérisé en ce que l'engin mobile (10) présente, du côté opposé au système de mise en mouvement (20), un contre- poids (15), au voisinage duquel le moteur d'appoint (16) est monté.
  21. Dispositif selon la revendication 20, caractérisé en ce que le moteur d'appoint (16) est fixé au contrepoids (15) par des goujons de centrage (17) et par des éléments de vissage (72).
  22. Dispositif selon l'une des revendications 1 à 20, caractérisé en ce qu'un mécanisme- réducteur hydraulique (80), réglable de façon continue, est raccordé à la commande génératrice de vibrations (66).
  23. Dispositif selon l'une des revendications 1 à 22, caractérisé en ce qu'entre le bâti de guidage (42) et un adaptateur (41'), ou organe intermédiaire de liaison, relié au second bras (23), est disposé au moins un amortisseur élastique (46).
EP98919116A 1997-03-20 1998-03-19 Dispositif de compaction Expired - Lifetime EP0901541B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19711649A DE19711649A1 (de) 1997-03-20 1997-03-20 Verdichtungsvorrichtung
DE19711649 1997-03-20
PCT/EP1998/001601 WO1998042920A1 (fr) 1997-03-20 1998-03-19 Dispositif de compression

Publications (2)

Publication Number Publication Date
EP0901541A1 EP0901541A1 (fr) 1999-03-17
EP0901541B1 true EP0901541B1 (fr) 2003-12-03

Family

ID=7824033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98919116A Expired - Lifetime EP0901541B1 (fr) 1997-03-20 1998-03-19 Dispositif de compaction

Country Status (5)

Country Link
EP (1) EP0901541B1 (fr)
AT (1) ATE255659T1 (fr)
AU (1) AU7208198A (fr)
DE (2) DE19711649A1 (fr)
WO (1) WO1998042920A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004015206A2 (fr) * 2002-08-05 2004-02-19 Daniel Paul Silcock Compacteur de dechets
DE10301576B4 (de) * 2003-01-16 2006-07-27 Lohmann & Stolterfoht Gmbh Kompaktantrieb, insbesondere für Walzenzüge
WO2010045316A1 (fr) * 2008-10-14 2010-04-22 Clark Equipment Company Chargeuses à direction à glissement avec isolation variable sur rouleau vibrant
FR2977901B1 (fr) * 2011-07-13 2015-12-04 Ile Medinger R D Soc Civ Procede de compactage en surface, outils, modules et engins pour sa mise en oeuvre
DE102013006321A1 (de) 2013-04-12 2014-10-16 Bomag Gmbh Baumaschine zur Bodenverdichtung, insbesondere Walzenzug, Bandagenmantelsegment sowie Stampffuß

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302540A (en) * 1964-03-02 1967-02-07 Jr Gabriel Fuentes Method and apparatus for compacting, rolling and finishing the earth
CH552101A (it) * 1972-12-19 1974-07-31 Domenighetti Domenico Macchina operatrice addensatrice multipla formata da tre o piu gruppi snodati fra loro per la compattazione del terreno.
US4269535A (en) * 1979-04-27 1981-05-26 Earl W. Sornsin Earth working implement control system
US4490070A (en) * 1979-09-07 1984-12-25 Dumbco Inc. Heavy-duty trench compactor
US4454780A (en) * 1981-07-06 1984-06-19 Ingersoll-Rand Company Vibratory mechanism
DE3411866A1 (de) * 1984-03-30 1985-10-10 Friedrich Wilh. Schwing Gmbh, 4690 Herne Loeffelbagger

Also Published As

Publication number Publication date
EP0901541A1 (fr) 1999-03-17
DE19711649A1 (de) 1998-09-24
DE59810317D1 (de) 2004-01-15
AU7208198A (en) 1998-10-20
WO1998042920A1 (fr) 1998-10-01
ATE255659T1 (de) 2003-12-15

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