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US20060127190A1 - Vibrating plate - Google Patents

Vibrating plate Download PDF

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Publication number
US20060127190A1
US20060127190A1 US10/538,789 US53878905A US2006127190A1 US 20060127190 A1 US20060127190 A1 US 20060127190A1 US 53878905 A US53878905 A US 53878905A US 2006127190 A1 US2006127190 A1 US 2006127190A1
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US
United States
Prior art keywords
baseplate
vibration plate
vibration
plate according
cell structure
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.)
Abandoned
Application number
US10/538,789
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English (en)
Inventor
Klaus Kremer
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.)
Bomag GmbH and Co OHG
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32336205&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20060127190(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Assigned to BOMAG GMBH reassignment BOMAG GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KREMER, KLAUS
Publication of US20060127190A1 publication Critical patent/US20060127190A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/38—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight with means specifically for generating vibrations, e.g. vibrating plate compactors, immersion vibrators
    • 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

Definitions

  • the present invention relates to a vibration plate according to the preamble of Claim 1 having a baseplate which may be set into vibrations by an exciter device.
  • a baseplate of this type has a ground plate whose bottom vibrates flatly on the material to be compressed. Because of the high dynamic load, most baseplates are manufactured from massive thick steel plates, which are stabilized further via welded-on supports if necessary.
  • a soil compression plate in which the baseplate is implemented as a ribbed hollow plastic part which is filled with sand or water before use, is known from DE 4307993 C2.
  • This plastic baseplate to be ballasted is to produce less noise during soil compression and allow more favorable manufacturing.
  • the ribs extend from an upper cover plate to the ground plate and are particularly implemented as an open-cell honeycomb structure.
  • the honeycomb structure is used in this case to elevate the mechanical strength of the plastic component, and the open-cell structure allows water or sand to be poured in and distributed to ballast the baseplate.
  • the present invention is therefore based on the object of providing a vibration plate having a baseplate which may be set into vibrations by an exciter device, during whose use strong grain refining no longer occurs and whose quiet running is simultaneously improved.
  • the vibration plate according to the present invention has a baseplate, which may be set into vibration by an exciter device, having at least one ground plate, one top plate, and a cell structure positioned between the ground plate and top plate, which stiffens the baseplate, as supporting components, the supporting components forming a baseplate having a stiffness in which the lowest natural frequency of the baseplate is at least 2 to 5 times, preferably at least 3 to 4 times the frequency of its vibration.
  • the supporting components are thus connected to one another in such a way that they form a body having very specific vibration properties.
  • the running properties of a vibration plate always improve significantly if the supporting components at least stiffen the ground plate in such a way that the lowest natural frequency of the baseplate lies in the above-mentioned ranges of the frequency of its vibrations during soil compression.
  • a high stiffness at low weight generates high natural frequencies, the lowest natural frequency from the bandwidth of the natural frequencies of the ground plate to reach a minimum value here.
  • Such a baseplate vibrates harmonically in the event of increasing compression of the subsoil before it passes over to irregular and undesired tumbling or tilting motions.
  • the baseplate In contrast to DE '993, for this purpose the baseplate must be especially light precisely during the compression.
  • supporting components known per se are used for stiffening and for lightweight construction in a way known from aircraft construction.
  • An especially stiff and nonetheless light baseplate thus arises, which has the natural frequency values according to the present invention.
  • the cell structure is employed for the purpose of using a significantly thinner ground plate or top plate than previously.
  • this construction allows the use of 4 to 8 mm thick sheet steel plates, which results in a significant weight savings in relation to the known vibration plates made of steel.
  • the vibration plate according to the present invention therefore has a significantly lower vibrating mass. This has the advantage that the necessary amplitude for ensuring sufficient compression may be generated using lower centrifugal forces. Therefore, lower unbalance masses may be used, which may in turn be driven using a lower power. The undesired grain refining may thus be reduced and the exciter device may simultaneously be operated more cost-effectively.
  • the significant weight reduction also allows the use of the vibration plate for compressing debris in general.
  • debris is understood as a loose stratification structure, formed from more or less unequally large and loosely arrayed individual grains, having large pore spaces.
  • this loose stratification structure may be converted into a pore-filling graduated, dense stratification structure which is low in cavities.
  • the grains may be sand or pebble grains or even snow and ice crystals, for example.
  • the vibration plate according to the present invention may thus also be used in the care and preparation of ski pistes, cross-country skiing courses, or ski jumps to achieve longer service lives, without the plate sinking into the snow. This field of use is not accessible to the typical vibration plates because of the massive or ballasted implementation of the ground plates and the high weights resulting therefrom.
  • the vibration excitation of the baseplate is performed in this case with the aid of an exciter device.
  • This may be a rotary exciter or directed oscillator mounted on or even in the baseplate, for example.
  • excitation through an individual exciter or even through multiple hydraulically or mechanically synchronized exciters is also conceivable.
  • Continuous shafts having one or more exciter weights are alternatively also usable as rotary exciters or directed oscillators. Eccentrically mounted shafts may also be used here.
  • the supporting components are welded to one another to form a self-supporting body.
  • an extraordinarily stiff body having further improved vibration properties arises, which may be handled easily even during production.
  • the weight of the baseplate and the weight of the exciter device includes, among other things, the weight of the baseplate and the weight of the exciter device, including the weight of possibly existing drives and/or suspension devices of the vibration plate.
  • the surface pressure as a result of intrinsic weight is the weight force resulting from the intrinsic weight which the vibration plate exerts on the flat soil surface it contacts.
  • the vibration of the baseplate may be set as desired at a frequency between 30 Hz and 60 Hz.
  • the frequency of 30 Hz may be adjusted up to larger frequency values continuously, in steps, or fixed in one step. This frequency adjustment is particularly necessary when compressing debris, sand being compressed at approximately 60 Hz.
  • the vibration of the baseplate may be set as desired at an amplitude of more than 0.1 mm and less than 10 mm, preferably 5 mm.
  • the amplitude may also be set from a value of 0.1 mm up to larger amplitude values continuously, in steps, or fixed in one step.
  • the baseplate is reinforced in that it has at least one longitudinal girder welded to the cell structure as a further supporting component.
  • This girder extends parallel and over a significant part of a long side of the baseplate.
  • the long side of the baseplate is understood as the longest side of the baseplate.
  • the longitudinal girder decisively reinforces the baseplate in regard to its flexural and torsional strength.
  • the cell structure welded thereto is also held better by the girder, which in turn further elevates the overall stiffness of the baseplate.
  • Especially suitable girders are manufactured from closed annular or box-type hollow profiles.
  • the longitudinal girder is positioned below the exciter device.
  • the baseplate is additionally stiffened particularly in the highly loaded region below the exciter device and the possibility is simultaneously provided of attaching the exciter device to the baseplate in a simple way, using screws, welding, or rivets, for example.
  • the longitudinal girder is implemented as a frame lying on the ground plate.
  • a significantly increased spatial stiffness of the longitudinal girder itself thus results, which may be increased even further if the stiffening cell structure is welded into the intermediate space enclosed by the frame.
  • the cell structure is also welded around the frame. This embodiment of the support allows a relatively wide exciter device to be attached to the vibration plate.
  • the individual cells of the cell structure each have a base whose maximum lateral extension is 20 mm to 200 mm, preferably 56 mm to 162 mm.
  • This very fine-celled cell structure allows the ground plate in particular to be implemented as very thin, because of the narrow support interval of the cell walls, without strong buckling of this baseplate, which is only 4 mm to 8 mm thick, resulting.
  • the cell structure typically has at least partially closed cells having polygonal bases.
  • the execution of the cell structure from partially closed cells results in further stiffening.
  • the execution using different polygonal bases has the advantage that the cell structure may even be tailored to more complicated geometries of the outline of the ground plate. Triangular, rectangular, pentagonal, or hexagonal and polygonal regular or even irregular shapes are advantageous.
  • the cell structure has cells having at least partially round bases. It is thus possible to provide even rounded bases of the ground plate with a cell structure. It is also advantageous to manufacture the cell structure from tubes, individual tube sections simply being joined to one another. For this purpose, circular cylindrical tubes may be used, for example.
  • the cell structure at least partially has different cell shapes.
  • This has the advantage that the stiffening effect of the cell structure may be varied distributed over the ground plate. This may be performed to adapt the stiffness to the load situation.
  • a cell structure having especially many small cells would be used in regions having an especially large load, e.g., at the edge of the ground plate or in the region of the vibration excitation.
  • More complicated geometries of the baseplate may also be manufactured using different cell shapes.
  • the cell structure may be tailored to a drop-shaped cross-section of the baseplate.
  • the cell structure preferably has closed cell side walls. A high stiffness and strength of the cell structure in the particular cell wall planes thus results. This simultaneously allows continuous welding of the cell structure with adjoining supporting components such as the ground plate, the top plate, or the longitudinal girder.
  • the weld seams are longer than in an open-cell construction, in which the cell walls have recesses in the wall base regions. This increases the strength and allows thinner cell walls to be used.
  • the walls of the longitudinal girder or the lateral plates of the baseplate, which terminate the cross-section may also be used as cell walls.
  • the cells are designed in such a way that planes of the cells parallel to the base each have the same shape and area as the base.
  • the cells are preferably shaped so that the cell side walls are essentially loaded by perpendicular forces.
  • the cell side walls are best positioned perpendicularly to the supporting ground plate and/or top plate and run linearly away therefrom.
  • the cell structure is expediently open on top.
  • the cell structure is preferably partially closed on top by the top plate. This only partial covering typically occurs if other components of the vibration plate cover the cell structure on top. In any case, however, the cell structure is to be protected by other covers from penetration of material to be compressed, if necessary.
  • the top plate is solidly connected to the cell structure, it results in further stiffening of the baseplate.
  • the cell structure is also covered on top so that no material to be compressed may collect in the cell structure.
  • the weight of the vibration plate and/or the baseplate thus remains constant even in the event of long use. Weight changes due to accumulations of the material to be compressed thus may not lead to a change of the vibration properties of the vibration plate.
  • the top plate makes cleaning of the vibration plate easier.
  • a removable top plate is also advantageous.
  • the bottom of the ground plate is at least partially provided with a wear protector.
  • a wear protector may be a coating made of a suitable plastic which is glued onto the ground plate or even a plastic or metal plate clamped onto the ground plate, which is easy to replace.
  • the wear protector may be attached to the baseplate through screws, rivets, or clamps, for example.
  • profiled strips are attached externally to the ground plate. This leads to further stiffening of the baseplate and, in addition, to profiling of the subsoil.
  • different profiles such as trapezoids, triangles, or even wavy profiles, are usable. They may also be attached to the ground plate through screws, rivets, clamps, or gluing, for example.
  • the vibration plate may be self-driven and provided with a handle so that it may be pushed or pulled vibrating over the soil by a person in a generally known way.
  • a self-driven vibration plate has a vibration-insulated suspension for installation on a self-propelled support device, which is connected to one of the supporting components of the baseplate. It is then a non-self-propelled vibration plate.
  • the suspension is best connected to the longitudinal girder or via the cell structure to the baseplate. Through the direct connection to the cell structure, it is possible to dispense with a further fastener.
  • the vibration insulation of the suspension may be produced in this case, for example, via rubber or even spring-damper elements and results in the vibrations of the vibration plate not being transmitted to the self-propelled support device.
  • a self-propelled support device may be a tractor, a snowcat, a street construction vehicle, or even a rolling mill drive for soil processing, for example.
  • the exciter device is attached to at least one of the supporting components of the baseplate.
  • the exciter device is attached to the longitudinal girder, as described above.
  • embodiments in which the exciter device is attached directly to a possibly specially reinforced cell structure are also expedient.
  • a separate drive is provided for the exciter device, e.g., a gasoline engine on the vibration plate.
  • a drive of the exciter device positioned on the vibration plate is dispensed with.
  • the exciter device may be coupled to a drive of the self-propelled support device and driven thereby.
  • the exciter device is then driven in a typical way by a hydraulic or even mechanical drive.
  • the exciter device has couplings for hydraulic lines or a driveshaft, for example, which may be connected to the corresponding counter couplings of the self-propelled support device.
  • the baseplate has an operating width essentially corresponding to its long side, which is at least approximately as wide as the self-propelled support device.
  • the operating width is to be wider than the lane of the support device.
  • the vibration plate thus smoothes the lanes left behind by the support device when the vibration plate is pulled behind the self-propelled support device.
  • the vibration plate is aligned with its long side perpendicular to the travel direction.
  • the vibration plate has a compressing effect on the material lying underneath it. Because of the especially wide embodiment, an especially effective mode of operation of the vibration plate results.
  • a vibration plate whose baseplate has a cross-section in which the region of the ground plate lying forward in the operating direction is curved upward together with a forward region of the top plate is especially well suitable for debris compression.
  • the upward bend of the ground plate lying forward in the operating direction prevents the plate from digging into the material to be compressed. Because the top plate is also bent upward, a cell structure may be positioned between the two plates. This provides the two very thin plates, which are bent upward, with good spatial stability.
  • the baseplate ( 2 ) preferably has a cross-section in which the region of the top plate lying to the rear in the operating direction is slanted falling downward toward the ground plate.
  • snow or sand residues simply slide off from the surface of the baseplate to the rear.
  • FIG. 1 schematically shows the section A-A through a vibration plate reinforced with a cell structure
  • FIG. 2 schematically shows the top view of a part of the vibration plate shown in FIG. 1 with the internal cell structure illustrated;
  • FIG. 3 schematically shows the detail illustration of the section B-B of the vibration plate shown in FIG. 1 and FIG. 2 ;
  • FIG. 4 shows a cell structure having a rectangular base
  • FIG. 5 shows a cell structure having a triangular base.
  • FIG. 1 shows the section A-A through vibration plate 1 for compressing and smoothing ski pistes. It contains a baseplate 2 , which is stiffened using a cell structure 5 , an exciter device 9 for generating vibrations, and a device support 10 , which is attached to a self-propelled support device.
  • the baseplate 2 contains a ground plate 3 , a top plate 4 , an interposed cell structure 5 , and a longitudinal girder 8 , which are all made of steel, as supporting components.
  • the exciter device 9 is attached to the frame-shaped longitudinal girder 8 , which is in turn welded to the ground plate 3 .
  • the longitudinal girder 8 runs over the entire long side of the baseplate 2 in this case.
  • the cell structure 5 comprises continuous and vertically running cell long walls 6 and cell transverse walls 7 , positioned perpendicularly to one another, which are welded permanently to the baseplate 2 and the top plate 4 here.
  • the cell walls have a wall interval from 50 mm to 150 mm in this case and have no openings. Therefore, this is a closed-cell cell structure having hollow cells which are cuboid in the central region of the baseplate.
  • the cell walls 6 , 7 are positioned more closely, since this region is loaded especially strongly by the exciter wave device.
  • the cell structure 5 welded to the girder 8 simultaneously stabilizes the girder 8 , and thus forms, together with the ground and top plates which are also welded on, a light, self-supporting body having high torsional and flexural strength.
  • the baseplate 2 is curved upward on the side lying forward in the operating direction, in order to push snow which collects in front of the vibration plate under the vibration plate and slide well over wavy ground.
  • both plates are curved upward and the interior lying between them is reinforced using the cell structure 5 made of 3 mm thick sheet steel.
  • the ground plate 3 and the top plate 4 run toward one another to a point, a crimp 15 of the ground plate 3 forming the tip of the baseplate 2 and simultaneously a support for the top plate 4 .
  • the top plate 4 drops toward the ground plate 3 , a very narrow crimp 16 of the ground plate 3 forming a rear support for the top plate 4 .
  • the ground plate 3 is provided on the bottom with a wear protector 12 made of abrasion-resistant plastic. This is screwed onto the ground plate 3 and prevents damage to the ground plate 3 from sharp stones which project out of the snow, for example.
  • a profiled strip 13 which is mounted transversely to the travel direction over the entire width, is located below the ground plate 3 . This strip is also attached replaceably and is used for further stiffening of the end section of the baseplate 2 and also for profiling the compressed snow and stabilizing the position of the vibration plate as it slides over the snow.
  • the vibration plate 1 is suspended on a self-propelled support device which travels in front, such as a snowcat in this case, and is pulled over the snow by this device.
  • the device support 10 of the snowcat is used for suspension. This is attached to the vibration-insulated suspension 11 of the vibration plate 1 without performing modifications on the support device.
  • the vibration plate 1 has no separate drive of the exciter device 9 .
  • the exciter device 9 has a shaft 18 provided with a coupling 17 , using which the exciter device may be coupled to a drive of the snowcat and then driven thereby.
  • a hydraulic hose 19 having coupling 20 is used to connect the exciter device 9 to the hydraulic system of the snowcat.
  • the variation of the cell structure 5 in size, shape, and cross-sectional dimensions may be recognized from the top view illustrated in FIG. 2 of a part of the vibration plate illustrated in FIG. 1 .
  • the cell long walls 6 and also the cell transverse walls are positioned more closely to one another.
  • the edge of the baseplate 2 is also provided with more closely positioned cell transverse walls 7 .
  • the remaining regions of the cell structure 5 have cells which are formed from thinner cell long walls 6 and in which the support walls 8 and/or the ground plate 3 , which are curved up at the front and rear, form the cell transverse walls 7 .
  • the cell structure 5 is delimited in this case at the lateral edges of the vibration plate 1 by side walls 14 , as may be seen in the section B-B shown in FIG. 3 .
  • the profiled strip 13 is a trapezoidal profile for producing a furrowed piste surface in this embodiment.
  • the vibration-insulated suspension elements 11 are positioned between the multipart exciter devices 9 and connected directly to the cell structure 5 in this exemplary embodiment.
  • FIGS. 4 and 5 two details from two different cell structures 5 are shown, the cell shown in FIG. 4 having a rectangular and perpendicular base and that in FIG. 5 having a triangular base.
  • the maximum lateral extension 22 of the base 23 enclosed by the cell walls 6 and 7 corresponds in FIG. 4 to the external lateral interval of the diametrically opposing cell side walls 6 spaced farthest apart.
  • the maximum lateral extension 22 of the base 23 is the external lateral length 22 of the third and longest cell wall 21 , which runs diagonally here.
  • FIG. 4 the example of the cell shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Soil Sciences (AREA)
  • Road Paving Machines (AREA)
  • Body Structure For Vehicles (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Secondary Cells (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US10/538,789 2002-12-11 2003-12-10 Vibrating plate Abandoned US20060127190A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10257892A DE10257892A1 (de) 2002-12-11 2002-12-11 Vibrationsplatte
DE10257892.3 2002-12-11
PCT/EP2003/014012 WO2004053232A1 (de) 2002-12-11 2003-12-10 Vibrationsplatte

Publications (1)

Publication Number Publication Date
US20060127190A1 true US20060127190A1 (en) 2006-06-15

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ID=32336205

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/538,789 Abandoned US20060127190A1 (en) 2002-12-11 2003-12-10 Vibrating plate

Country Status (6)

Country Link
US (1) US20060127190A1 (de)
EP (1) EP1570130B1 (de)
AT (1) ATE331083T1 (de)
CA (1) CA2509069A1 (de)
DE (2) DE10257892A1 (de)
WO (1) WO2004053232A1 (de)

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US20070089324A1 (en) * 2005-10-21 2007-04-26 Bomag Gmbh Rear end finisher and method of smoothing an outdoor surface
US9920491B1 (en) * 2016-12-12 2018-03-20 Caterpillar Inc. Plate compactor with interchangeable edges
US10889943B2 (en) * 2018-08-24 2021-01-12 Caterpillar Paving Products Inc. System and method for operating a paving machine
US12065790B2 (en) 2020-07-07 2024-08-20 Milwaukee Electric Tool Corporation Plate compactor
US12312752B2 (en) 2020-07-07 2025-05-27 Milwaukee Electric Tool Corporation Plate compactor

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DE202005002235U1 (de) * 2005-02-11 2006-06-22 Bomag Gmbh Schneeflächenverdichter und Spurvorrichtung
DE102005046914A1 (de) * 2005-09-30 2007-04-05 Bomag Gmbh Gerät zur Schneeflächenpräparierung und Verfahren zur Steuerung eines Hydraulikkreislaufs zwischen einem solchem Gerät und einer Zugmaschine
DE102009018490B4 (de) * 2009-04-18 2015-05-28 Mts Maschinentechnik Schrode Ag Anbauverdichter, der an einen Bagger ankuppelbar ist, mit einem Unwuchterzeuger
DE102010019053A1 (de) 2010-05-03 2011-11-03 Wacker Neuson Se Bodenverdichtungsvorrichtung mit Messvorrichtung zum Bestimmen von Bodenkennwerten
DE202010017338U1 (de) 2010-05-03 2012-01-04 Wacker Neuson Se Messvorrichtung zum Bestimmen vonBodenkennwerten
DE102012200908B4 (de) * 2012-01-23 2015-07-23 Ammann Verdichtung Gmbh Bodenverdichter und Verfahren zum Besohlen eines Bodenverdichters
DE102012004436A1 (de) * 2012-03-05 2013-09-05 Bomag Gmbh Plattengleitvorrichtung

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EP1570130A1 (de) 2005-09-07
EP1570130B1 (de) 2006-06-21
DE10257892A1 (de) 2004-06-24
ATE331083T1 (de) 2006-07-15
DE50303996D1 (de) 2006-08-03
WO2004053232A1 (de) 2004-06-24
CA2509069A1 (en) 2004-06-24

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