EP3517683B1 - Soil compactor - Google Patents

Soil compactor Download PDF

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Publication number
EP3517683B1
EP3517683B1 EP19161464.3A EP19161464A EP3517683B1 EP 3517683 B1 EP3517683 B1 EP 3517683B1 EP 19161464 A EP19161464 A EP 19161464A EP 3517683 B1 EP3517683 B1 EP 3517683B1
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EP
European Patent Office
Prior art keywords
roller
axis
rotation
machine frame
coupling
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.)
Active
Application number
EP19161464.3A
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German (de)
French (fr)
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EP3517683A1 (en
Inventor
Markus Golbs
Georg Troeger
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.)
Hamm AG
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Hamm AG
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Filing date
Publication date
Application filed by Hamm AG filed Critical Hamm AG
Priority to EP20176432.1A priority Critical patent/EP3722506B1/en
Publication of EP3517683A1 publication Critical patent/EP3517683A1/en
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Publication of EP3517683B1 publication Critical patent/EP3517683B1/en
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    • 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
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
    • E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll
    • 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
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • 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
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/236—Construction of the rolling elements, e.g. surface configuration, rolling surface formed by endless track

Definitions

  • the present invention relates to a soil compactor comprising at least one compacting roller which is rotatably supported on a machine frame about an axis of rotation of the roller, at least one compacting roller being movably supported in its two axial end regions in each case via a suspension arrangement on the machine frame with respect to the latter.
  • the same devices can be used to improve the compaction efficiency in association with at least one compactor roller, which devices generate a force which periodically acts on the compactor roller when the compacting roller is rolling on a surface to be compacted.
  • the force can be exerted essentially in the vertical direction, so that a vibration acceleration or vibration movement of the compressor roller is caused, or can be exerted in the circumferential direction, so that an oscillation acceleration or oscillation movement of the compressor roller is caused.
  • the compacting rollers are supported on the machine frame at their two axial end regions via a relative movement with respect to the machine frame .
  • the compacting rollers are supported on the machine frame at their two axial end regions via a relative movement with respect to the machine frame .
  • it is from the EP 0 168 72 A2 known to use pneumatic suspensions.
  • suspensions with elastically deformable suspension elements constructed from elastomer material.
  • a soil compactor according to the preamble of claim 1 is known from the US 3,052,166 A known.
  • a compactor roller is in each of its two end regions located in the direction of a roller axis of rotation with respect to one via a carrier element of a roller carrier unit Machine frame worn.
  • a plurality of first coupling regions are provided in succession on each of these carrier elements in the circumferential direction, and in each such first coupling region the carrier element is supported with respect to the machine frame via a plurality of first longitudinal coil springs arranged with mutually parallel spring axes arranged in a plane orthogonal to the axis of rotation of the roll.
  • each carrier element is supported with respect to the machine frame by at least one other helical spring aligned with the longitudinal spring axis oriented parallel to the roll axis of rotation.
  • a soil compactor according to claim 1.
  • This comprises at least one compacting roller which is rotatably supported on a machine frame about an axis of rotation of the roller, at least one compacting roller in its two axial end regions each being movably supported on the machine frame via a suspension arrangement, at least one one, preferably each suspension arrangement comprises at least one helical spring coupling the compressor roller movably to the machine frame.
  • the movement of the compressor roller with respect to the machine frame which is permitted by the suspension arrangement, is a movement essentially transversely to the roller axis of rotation, possibly also in the direction of the roller axis of rotation, that is to say in addition to the basically existing rotatability of the compressor roller about that Roller rotation axis is allowed relative movement between the compressor roller and the machine frame.
  • coil springs or at least one coil spring are used to enable a relative movement between the compressor roller and the machine frame. It was recognized that the use of helical springs on the one hand achieves a suspension which essentially prevents the transmission of periodically effective forces from the compressor roller to the machine frame, while on the other hand the elements used to provide this suspension, i.e. helical springs, themselves essentially do not absorb any energy , so that the force exerted periodically on a compressor roller to improve the compression efficiency or the energy used for this is essentially completely available in the region of the compressor roller for accelerating or for generating a periodic movement thereof.
  • coil springs for the suspension of a compressor roller enables relative movement with respect to the machine frame to a greater extent than is the case, for example, with elastomer elements, such as rubber buffers, which at the same time have the tendency to transmit damping forces proportional to the speed to the machine frame.
  • coil springs that can be loaded with tension and pressure in the direction of a longitudinal axis of the spring and that have one or more spring windings, in particular springs that have spring windings surrounding a longitudinal axis of the spring with a pitch different from zero, are considered.
  • Such helical springs can have a constant radial dimension in the direction of the spring longitudinal axis, that is to say an essentially constant winding radius with respect to the spring longitudinal axis or an essentially constant radius of curvature of the spring windings.
  • Such helical springs can also be constructed with a pitch that varies at least in regions in the direction of the longitudinal axis of the spring, and / or can at least in regions have a varying spring radius with respect to the longitudinal axis of the spring and thus a varying radius of curvature of the spring windings, for example to provide an essentially conical shape such a coil spring in which the spring windings expand radially outward in a spiral.
  • the at least one suspension arrangement comprises a roller carrier unit, the compressor roller being rotatably supported on the roller carrier unit about the roller axis of rotation, and wherein the roller carrier unit is supported via at least one Coil spring is coupled to the machine frame.
  • the roller support unit comprises a support element which rotatably supports the compacting roller about the axis of rotation of the roller, and that the support element is coupled to the machine frame in a plurality of first coupling areas arranged around the axis of rotation with a circumferential spacing from one another, in each case via at least one coil spring .
  • a plurality of first coupling areas successive in the circumferential direction about the axis of rotation of the roller are provided on the support element, and in at least one, preferably each first coupling area, the support element is at least two first Coil springs coupled to the machine frame.
  • at least one pair of first coupling regions diametrically opposite one another with respect to the roll axis of rotation is provided on the carrier element.
  • all of the first coil springs are not included in at least one Roll axis of rotation essentially orthogonal plane lying longitudinal spring axes are arranged.
  • the first coil springs on at least one pair of first coupling areas are supported on the machine frame in each case in a support area, and the support areas have a different radial distance from the roll axis of rotation than that provided by these first coil springs the first coupling area coupled to the machine frame.
  • a device for generating an essentially periodic acceleration, preferably oscillation acceleration and / or vibration acceleration, can be provided in the compacting roller.
  • FIG. 9 A soil compactor, generally designated 10, is shown, which has a driver's cab 14 on a rear carriage 12 and wheels 16 which can be driven by a drive unit (not shown), which can also be provided on the rear carriage 12, for moving the soil compactor 10 forward.
  • a front carriage 18, which is pivotably connected to steer the soil compactor 10 with the rear carriage 12 about a substantially vertical axis, comprises a machine frame 22 with a longitudinal frame section 24 An extending essentially in a direction of movement of the soil compactor 10 and receiving the compacting roller 20 between them
  • the compressor roller 20 is supported or suspended in its two axial end regions, axially here in relation to a roller axis of rotation about which the compressor roller 20 is rotatably supported on the machine frame 22, by means of suspension arrangements described in more detail below, in such a way that the compressor roller 20 has a relative movement with respect to it of the machine frame 22 can execute.
  • Such a relative mobility enables a vibration decoupling between the compression roller 20 and the machine frame 22, which is of substantial importance in particular if an in on or in the compression roller 20 Fig. 9 only schematically indicated device 26 is provided, with which a force or an acceleration can be exerted on the compressor roller 20 in order to accelerate the latter, for example, in the vertical direction V or in the circumferential direction about the roller axis of rotation.
  • Devices of this type to be used to generate a vibration acceleration or vibration movement and / or an oscillation acceleration or oscillation movement of the compressor roller 20 are well known in the prior art and need not be described in more detail.
  • FIGS 1 and 2 A suspension arrangement for the compressor roller 20 is shown in FIGS 1 and 2 shown.
  • a roller disk 34 In the axial end region 30, a roller disk 34, generally also referred to as a round blank, can be provided in the roller jacket 32.
  • a drive motor 36 can be carried on this roller disk 34, by means of which the compressor roller 20 can be driven to rotate about the roller axis of rotation A.
  • This structure can be provided in particular if, unlike in Fig. 9 shown, the soil compactor 10 on the rear carriage also has a compacting roller and at least one of the compacting rollers is to be driven to rotate.
  • the suspension arrangement 28 comprises a roller support unit, generally designated 38, on which the compressor roller 20 is rotatably supported about the roller axis of rotation A, for example via the drive motor 36 or a bearing element provided on the roller disk 34.
  • the roller carrier unit 38 comprises a first carrier element 40, on which the compressor roller 20 is rotatably supported about the roller axis of rotation A.
  • the roller support unit 38 further comprises a second support element 42 which is supported in a first coupling area 44 on the machine frame 22 so as to be pivotable about an axis substantially parallel to the axis of rotation A of the roller.
  • a support plate 46 can be provided or carried on the machine frame 22, on which the second support element 42 is pivotably supported.
  • the second carrier element 42 is coupled to the machine frame 22, for example the carrier plate 46, via a helical spring 50.
  • a support area 52 can be provided on the machine frame 22 or the support plate 46, on which one of the two end areas of the coil spring 50 engages, while the other of the two end areas of the coil spring 50 engages on the second coupling area 48 of the second support element 42.
  • the first carrier element 40 is pivotally connected to the second carrier element 42 in a third coupling area 54.
  • the third coupling area 54 lies in a longitudinal direction of extension of the second support element 42 between the first coupling area 44 and the second coupling area 48, which are each provided at end areas of the second support element 42.
  • a helical spring 58 engages with one of its end regions on the first carrier element 40.
  • the other end region of the coil spring 48 engages on a support region 60, which is also provided, for example, on the carrier plate 46 or on the machine frame 42, so that the first carrier element 40 and thus the compressor roller 20 are supported on the machine frame 22 via the coil spring 58.
  • the first carrier element 40 extends approximately in the vertical direction V, so that the fourth coupling region 56 and also the roll axis of rotation are positioned in the vertical direction V above the third coupling region 54. This means that, even under the influence of gravity, there is no significant tilting moment causing the first support element 40 to pivot with respect to the second support element 42. Rather, due to the fact that the machine frame 22 hangs on the compressor roller 20 via the two coupled support elements 40, 42, the roller support unit 38 will assume a state in which the two support elements 40, 42 correspond to one another in a state of minimal potential energy Relative swivel position.
  • the compression roller 20 can carry out a relative movement with respect to the machine frame 22 essentially in the vertical direction V while compressing or stretching the coil spring 50, while with compression or expansion of the coil spring 58 the compression roller 20 can essentially execute with respect to the machine frame 22 can perform a movement in the horizontal direction H.
  • the horizontal direction H can be understood as a direction which is essentially parallel to the substrate U to be compacted
  • the vertical direction V can be understood as a direction which is substantially orthogonal to the substrate U to be compacted is.
  • the suspension arrangement 38 thus enables the compression roller 20 to move relative to the compression roller 20 in any direction substantially orthogonally to the axis of rotation A of the roll while compressing or stretching the two coil springs 50, 58, while in the direction of the axis of rotation A through the roller support unit 38, the compression roller 20 is defined with respect to the Machine frame 22 is supported. This ensures that transverse forces, that is to say forces acting in the direction of the axis of rotation A of the roller, can also be transmitted between the compacting roller 20 and the machine frame 22, which can occur in particular when the soil compactor 10 is being steered.
  • the suspension arrangement 28a comprises a roller carrier unit 38a, which rotatably supports the compressor roller 20a about the roller axis of rotation A, and has a carrier element 64a which is essentially cruciform.
  • a roller carrier unit 38a which rotatably supports the compressor roller 20a about the roller axis of rotation A
  • a carrier element 64a which is essentially cruciform.
  • four coupling arms 68a, 70a, 72a, 74a extend at a mutual angular distance of approximately 90 ° to one another, so that the coupling arms 68a and 72a are arranged diametrically opposite one another with respect to the roller axis of rotation A.
  • the coupling arms 70a, 74a are arranged diametrically opposite one another with respect to the roll axis of rotation A.
  • a first coupling region 76a, 78a, 80a, 82a is formed in each of the end regions of the coupling arms 68a, 70a, 72a, 74a that are distant from the roller axis of rotation A.
  • the carrier element 64a is coupled to the machine frame 22a or the carrier plate 46a provided thereon by means of two coil springs 84a, 86a.
  • the coil springs 84a, 86a which are respectively coupled to the machine frame 22a, have spring longitudinal axes F which are essentially parallel to one another and thus essentially mutually arranged continuously.
  • the positioning of the coil springs 84a, 86a which cooperate, in particular, with the first coupling areas 76a, 80a obliquely with respect to the horizontal direction H, makes it possible to transmit a drive lever with a large lever between the compressor roller 20a and the machine frame 22a. Forces acting in the vertical direction V can be efficiently transmitted via the coil springs 84a, 86a, which are oriented essentially in the vertical direction V and via which the first coupling regions 70a and 74a are supported with respect to the machine frame 22a.
  • first coil springs 84a, 86a are thus essentially provided and suitable for compressing the compressor roller 20a with respect to the machine frame 22a when deflections are perpendicular to the axis of rotation A of the roller to support.
  • second coupling regions 90a are provided on the carrier element 64a, for example on the central body region 66a thereof, in which the carrier element 64a is coupled to the machine frame 22a, for example the carrier plate 46a, via second helical springs 92a and is thus supported in the axial direction is.
  • the second coil springs 92a are preferably arranged in such a way that their longitudinal spring axes F extend essentially parallel to the axis of rotation A of the roll.
  • each such second coil springs 92a can be provided with a uniform circumferential distance from one another.
  • each can move in the direction of the roll rotation axis A overlapping sections 87a and 89a may be provided.
  • the compressor roller 20a is supported by the first coil springs 84a, 86a essentially for a movement perpendicular to the axis of rotation A of the machine with respect to the machine frame 22a and can thus be moved both in the vertical direction V and in the horizontal direction H with respect to the machine frame 22a.
  • the defined axial positioning and in particular also the transmission of axially acting forces, that is to say, for example, the steering forces, essentially takes place via the second coil springs 92a.
  • one or more coupling rods for example essentially extending in the direction of the axis of rotation of the roller A, can be provided, which are supported on the carrier plate 46a on the one hand and the carrier element 64a on the other, such coupling rods being elastic in at least one of their end regions , for example via a rubber bearing, are supported in order to permit movement of the compressor roller 20a in the direction of the roller axis of rotation A.
  • FIGS 6 to 8 An embodiment of a suspension arrangement according to the invention is shown in FIGS 6 to 8 shown.
  • Components which correspond to the components or components described above in terms of structure or function are identified by the same reference number with the addition of an appendix "b".
  • the carrier element 64b of the roller carrier unit 38b of a respective suspension arrangement 28b has only the two coupling arms 68b and 72b, which extend essentially in the vertical direction, with the first coupling regions 76b, 80b provided thereon.
  • Each of these two first coupling areas 76b, 80b is again coupled to the machine frame 22b or a support plate 46b provided thereon via two helical springs 84b, 86b.
  • the first coil springs 84b, 86b with their respective longitudinal spring axes F are not in a plane substantially orthogonal to the axis of rotation A of the roll.
  • the first coupling areas 76b, 80b and the support areas 88a, in which the coil springs 84b, 86b engage on the carrier plate 46b or on the machine frame 22b, are offset not only in the circumferential direction about the roll rotation axis A, but also in the direction of the roll rotation axis A.
  • the compression roller 20b is not only movably supported on the machine frame 22b via the first coil springs 84b, 86b in a direction perpendicular to the roller axis of rotation A, but is also supported or centered with respect to the latter in the direction of the roller axis of rotation A, in particular when on both axial axes End regions of the compressor roller 22b are used essentially identical suspension arrangements 28b for the suspension of the compressor roller 20b on the machine frame 22b. In this embodiment, it can therefore be based on that in the embodiment of 3 to 5 second coil springs used, which essentially extend in the direction of the roll axis of rotation A, are dispensed with.
  • first coupling areas 76b, 80b are arranged in the vertical direction V above or below the roll axis of rotation A, that is to say the two coupling arms 68b, 72b essentially extend in the vertical direction V. Forces that act with these two first coupling areas 76b, 80b can thus be efficiently transmitted, particularly in the vertical direction, whereby it must be assumed that, due to the weight of the soil compactor 10, these forces to be supported and supported in the vertical direction will be significantly greater, than the forces acting in the horizontal direction H in the compression mode.
  • this embodiment of a suspension arrangement 28b also ensures that efficient vibration decoupling is achieved via the first coil springs 84b, 86b coupling the compressor roller 20b to the machine frame 22b, so that periodic movements or accelerations occurring in the region of the compressor roller 22b essentially do not occur be transferred to the machine frame 22b.
  • All embodiments of a suspension arrangement for a compressor roller take advantage of the fact that by using helical springs as the elastic elements which transmit the suspension forces, excellent vibration decoupling is achieved between the compressor roller and the machine frame which rotatably supports it, but that a substantial damping effect is achieved by absorption of energy in the elastically deformable elements does not occur.
  • the energy provided in the area of the compressor roller with which it is to be set in a periodic movement i.e. for example a vibration movement or vibration acceleration directed essentially in the vertical direction V or an oscillation movement or vibration acceleration directed essentially in the circumferential direction, can essentially be completely for the Generation of this movement can be used.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Crushing And Grinding (AREA)

Description

Die vorliegende Erfindung betrifft einen Bodenverdichter, umfassend wenigstens eine an einem Maschinenrahmen um eine Walzendrehachse drehbar getragene Verdichterwalze, wobei wenigstens eine Verdichterwalze in ihren beiden axialen Endbereichen jeweils über eine Aufhängungsanordnung an dem Maschinenrahmen bezüglich diesem bewegbar getragen ist.The present invention relates to a soil compactor comprising at least one compacting roller which is rotatably supported on a machine frame about an axis of rotation of the roller, at least one compacting roller being movably supported in its two axial end regions in each case via a suspension arrangement on the machine frame with respect to the latter.

Bei Bodenverdichtern können zum Verbessern der Verdichtungseffizienz in Zuordnung zu wenigstens einer Verdichterwalze derselben Vorrichtungen eingesetzt werden, welche im Verdichtungsbetrieb bei auf einem zu verdichtenden Untergrund abrollender Verdichterwalze eine periodisch auf die Verdichterwalze einwirkende Kraft erzeugen. Die Kraft kann im Wesentlichen in Vertikalrichtung ausgeübt werden, so dass eine Vibrationsbeschleunigung bzw. Vibrationsbewegung der Verdichterwalze hervorgerufen wird, oder kann in Umfangsrichtung ausgeübt werden, so dass eine Oszillationsbeschleunigung bzw. Oszillationsbewegung der Verdichterwalze hervorgerufen wird.In the case of soil compactors, the same devices can be used to improve the compaction efficiency in association with at least one compactor roller, which devices generate a force which periodically acts on the compactor roller when the compacting roller is rolling on a surface to be compacted. The force can be exerted essentially in the vertical direction, so that a vibration acceleration or vibration movement of the compressor roller is caused, or can be exerted in the circumferential direction, so that an oscillation acceleration or oscillation movement of the compressor roller is caused.

Um insbesondere bei mit derartigen Verdichterwalzen aufgebauten Bodenverdichtern dafür zu sorgen, dass die auf eine Verdichterwalze periodisch einwirkende Kraft nicht auf den die Verdichterwalze drehbar tragenden Maschinenrahmen übertragen wird, sind die Verdichterwalzen an ihren beiden axialen Endbereichen über eine Relativbewegung bezüglich des Maschinenrahmens zulassende Aufhängungen am Maschinenrahmen getragen. Beispielsweise ist es aus der EP 0 168 72 A2 bekannt, pneumatische Aufhängungen einzusetzen. Aus der US 5,71 6,162 ist es bekannt, Aufhängungen mit aus Elastomermaterial aufgebauten, elastisch verformbaren Aufhängungselementen einzusetzen.In order to ensure, in particular in the case of soil compactors constructed with such compacting rollers, that the force acting periodically on a compacting roller is not transmitted to the machine frame which rotatably supports the compacting roller, the compacting rollers are supported on the machine frame at their two axial end regions via a relative movement with respect to the machine frame . For example, it is from the EP 0 168 72 A2 known to use pneumatic suspensions. From the US 5.71 6.162 it is known to use suspensions with elastically deformable suspension elements constructed from elastomer material.

Ein Bodenverdichter gemäß dem Oberbegriff des Anspruchs 1 ist aus der US 3 052 166 A bekannt. Bei diesem bekannten Bodenverdichter ist eine Verdichterwalze in ihren beiden in Richtung einer Walzendrehachse gelegenen Endbereichen jeweils über ein Trägerelement einer Walzenträgereinheit bezüglich eines Maschinenrahmens getragen. An jedem dieser Trägerelemente sind in Umfangsrichtung aufeinanderfolgend mehrere erste Kopplungsbereiche vorgesehen, und in jedem derartigen ersten Kopplungsbereich ist das Trägerelement bezüglich des Maschinenrahmens über mehrere mit zueinander parallel angeordneten und in einer zur Walzendrehachse orthogonalen Ebene liegenden Federlängsachsen ausgerichteten ersten Schraubenfedern getragen. Ferner ist jedes Trägerelement über zumindest eine andere mit zur Walzendrehachse parallel orientierter Federlängsachse ausgerichtete Schraubenfeder bezüglich des Maschinenrahmens abgestützt.A soil compactor according to the preamble of claim 1 is known from the US 3,052,166 A known. In this known soil compactor, a compactor roller is in each of its two end regions located in the direction of a roller axis of rotation with respect to one via a carrier element of a roller carrier unit Machine frame worn. A plurality of first coupling regions are provided in succession on each of these carrier elements in the circumferential direction, and in each such first coupling region the carrier element is supported with respect to the machine frame via a plurality of first longitudinal coil springs arranged with mutually parallel spring axes arranged in a plane orthogonal to the axis of rotation of the roll. Furthermore, each carrier element is supported with respect to the machine frame by at least one other helical spring aligned with the longitudinal spring axis oriented parallel to the roll axis of rotation.

Es ist die Aufgabe der vorliegenden Erfindung, einen Bodenverdichter vorzusehen, bei welchem wenigstens eine Verdichterwalze in einer die Verdichtungseffizienz im Wesentlichen nicht beeinträchtigenden Art und Weise an einem Maschinenrahmen bezüglich diesem bewegbar getragen ist.It is the object of the present invention to provide a soil compactor in which at least one compactor roller is movably supported on a machine frame with respect to the same in a manner which does not substantially impair the compacting efficiency.

Erfindungsgemäß wird diese Aufgabe gelöst durch einen Bodenverdichter gemäß Anspruch 1. Dieser umfasst wenigstens eine an einem Maschinenrahmen um eine Walzendrehachse drehbar getragene Verdichterwalze, wobei wenigstens eine Verdichterwalze in ihren beiden axialen Endbereichen jeweils über eine Aufhängungsanordnung an dem Maschinenrahmen bezüglich diesem bewegbar getragen ist, wobei wenigstens eine, vorzugsweise jede Aufhängungsanordnung wenigstens eine die Verdichterwalze bewegbar mit dem Maschinenrahmen koppelnde Schraubenfeder umfasst.According to the invention, this object is achieved by a soil compactor according to claim 1. This comprises at least one compacting roller which is rotatably supported on a machine frame about an axis of rotation of the roller, at least one compacting roller in its two axial end regions each being movably supported on the machine frame via a suspension arrangement, at least one one, preferably each suspension arrangement comprises at least one helical spring coupling the compressor roller movably to the machine frame.

Es ist hier darauf hinzuweisen, dass im Sinne der vorliegenden Erfindung die durch die Aufhängungsanordnung zugelassene Bewegung der Verdichterwalze bezüglich des Maschinenrahmens eine Bewegung im Wesentlichen quer zur Walzendrehachse, gegebenenfalls auch in Richtung der Walzendrehachse, also eine zusätzlich zu der grundsätzlich vorhandenen Drehbarkeit der Verdichterwalze um die Walzendrehachse zugelassene Relativbewegung zwischen der Verdichterwalze und dem Maschinenrahmen ist.It should be pointed out here that, within the meaning of the present invention, the movement of the compressor roller with respect to the machine frame, which is permitted by the suspension arrangement, is a movement essentially transversely to the roller axis of rotation, possibly also in the direction of the roller axis of rotation, that is to say in addition to the basically existing rotatability of the compressor roller about that Roller rotation axis is allowed relative movement between the compressor roller and the machine frame.

Bei dem erfindungsgemäßen Aufbau werden zum Ermöglichen einer Relativbewegung zwischen Verdichterwalze und Maschinenrahmen Schraubenfedern bzw. zumindest eine Schraubenfeder eingesetzt. Es wurde erkannt, dass durch den Einsatz von Schraubenfedern einerseits eine die Übertragung von periodisch wirksamen Kräften von der Verdichterwalze auf den Maschinenrahmen im Wesentlichen unterbindende Aufhängung erreicht wird, wobei andererseits die zum Bereitstellen dieser Aufhängung eingesetzten Elemente, also Schraubenfedern, selbst im Wesentlichen keine Energie absorbieren, so dass die zum Verbessern der Verdichtungseffizienz auf eine Verdichterwalze periodisch ausgeübte Kraft bzw. die dafür eingesetzte Energie im Wesentlichen vollständig im Bereich der Verdichterwalze zur Beschleunigung bzw. zur Erzeugung einer periodischen Bewegung derselben zur Verfügung steht. Ferner ermöglicht der Einsatz von Schraubenfedern für die Aufhängung einer Verdichterwalze eine Relativbewegung bezüglich des Maschinenrahmens in größerem Ausmaß, als dies beispielsweise bei Elastomerelementen, wie zum Beispiel Gummipuffern, der Fall ist, welche gleichzeitig die Neigung haben, geschwindigkeitsproportionale Dämpfungskräfte auf den Maschinenrahmen zu übertragen.In the structure according to the invention, coil springs or at least one coil spring are used to enable a relative movement between the compressor roller and the machine frame. It was recognized that the use of helical springs on the one hand achieves a suspension which essentially prevents the transmission of periodically effective forces from the compressor roller to the machine frame, while on the other hand the elements used to provide this suspension, i.e. helical springs, themselves essentially do not absorb any energy , so that the force exerted periodically on a compressor roller to improve the compression efficiency or the energy used for this is essentially completely available in the region of the compressor roller for accelerating or for generating a periodic movement thereof. Furthermore, the use of coil springs for the suspension of a compressor roller enables relative movement with respect to the machine frame to a greater extent than is the case, for example, with elastomer elements, such as rubber buffers, which at the same time have the tendency to transmit damping forces proportional to the speed to the machine frame.

Es ist darauf hinzuweisen, dass im Sinne der vorliegenden Erfindung als Schraubenfedern vorzugsweise auf Zug und Druck in Richtung einer Federlängsachse belastbare, eine oder mehrere Federwindungen aufweisende Federn betrachtet werden, insbesondere Federn, welche eine Federlängsachse umgebende Federwindungen mit einer von null verschiedenen Ganghöhe aufweisen. Dabei können derartige Schraubenfedern eine in Richtung der Federlängsachse gleichbleibende radiale Abmessung, also einen im Wesentlichen konstanten Windungsradius bezüglich der Federlängsachse bzw. einen im Wesentlichen konstantem Krümmungsradius der Federwindungen aufweisen. Auch können derartige Schraubenfedern mit in Richtung der Federlängsachse zumindest bereichsweise variierender Ganghöhe aufgebaut sein, oder/und können zumindest bereichsweise einen variierenden Federradius bezüglich der Federlängsachse und somit einen variierenden Krümmungsradius der Federwindungen aufweisen, beispielsweise zum Bereitstellen einer im Wesentlichen konischen Gestalt einer derartigen Schraubenfeder, bei welcher die Federwindungen sich nach radial außen spiralartig erweitern.It should be noted that within the meaning of the present invention, coil springs that can be loaded with tension and pressure in the direction of a longitudinal axis of the spring and that have one or more spring windings, in particular springs that have spring windings surrounding a longitudinal axis of the spring with a pitch different from zero, are considered. Such helical springs can have a constant radial dimension in the direction of the spring longitudinal axis, that is to say an essentially constant winding radius with respect to the spring longitudinal axis or an essentially constant radius of curvature of the spring windings. Such helical springs can also be constructed with a pitch that varies at least in regions in the direction of the longitudinal axis of the spring, and / or can at least in regions have a varying spring radius with respect to the longitudinal axis of the spring and thus a varying radius of curvature of the spring windings, for example to provide an essentially conical shape such a coil spring in which the spring windings expand radially outward in a spiral.

Um unter Ermöglichung der Drehbewegung der Verdichterwalze um die Walzendrehachse deren Aufhängung über wenigstens eine Schraubenfeder in einfacher Weise zu ermöglichen, umfasst die wenigstens eine Aufhängungsanordnung eine Walzenträgereinheit, wobei die Verdichterwalze an der Walzenträgereinheit um die Walzendrehachse drehbar getragen ist, und wobei die Walzenträgereinheit über wenigstens eine Schraubenfeder mit dem Maschinenrahmen gekoppelt ist.In order to enable the compressor roller to rotate about the roller axis of rotation in a simple manner while allowing the compressor roller to rotate, the at least one suspension arrangement comprises a roller carrier unit, the compressor roller being rotatably supported on the roller carrier unit about the roller axis of rotation, and wherein the roller carrier unit is supported via at least one Coil spring is coupled to the machine frame.

Bei einer erfindungsgemäß ausgestalteten Aufhängungsanordnung ist ferner vorgesehen, dass die Walzenträgereinheit ein die Verdichterwalze um die Walzendrehachse drehbar tragendes Trägerelement umfasst, und dass das Trägerelement in einer Mehrzahl von um die Walzendrehachse mit Umfangsabstand zueinander angeordneten ersten Kopplungsbereichen jeweils über wenigstens eine Schraubenfeder mit dem Maschinenrahmen gekoppelt ist.In a suspension arrangement designed according to the invention, it is further provided that the roller support unit comprises a support element which rotatably supports the compacting roller about the axis of rotation of the roller, and that the support element is coupled to the machine frame in a plurality of first coupling areas arranged around the axis of rotation with a circumferential spacing from one another, in each case via at least one coil spring .

Um eine in mehreren Richtungen stabile Abstützwechselwirkung zwischen dem Trägerelement und dem Maschinenrahmen erreichen zu können, ist an dem Trägerelement eine Mehrzahl von in Umfangsrichtung um die Walzendrehachse aufeinanderfolgenden ersten Kopplungsbereichen vorgesehen, und in wenigstens einem, vorzugsweise jedem ersten Kopplungsbereich ist das Trägerelement über wenigstens zwei erste Schraubenfedern mit dem Maschinenrahmen gekoppelt. Insbesondere ist an dem Trägerelement wenigstens ein Paar von bezüglich der Walzendrehachse einander diametral gegenüberliegenden ersten Kopplungsbereichen vorgesehen.In order to be able to achieve a support interaction between the support element and the machine frame that is stable in several directions, a plurality of first coupling areas successive in the circumferential direction about the axis of rotation of the roller are provided on the support element, and in at least one, preferably each first coupling area, the support element is at least two first Coil springs coupled to the machine frame. In particular, at least one pair of first coupling regions diametrically opposite one another with respect to the roll axis of rotation is provided on the carrier element.

Bei der erfindungsgemäßen Ausgestaltung, bei welcher auf im Wesentlichen in Richtung der Walzendrehachse sich erstreckende und die Verdichterwalze axial bezüglich des Maschinenrahmens zentrierende Schraubenfedern verzichten werden kann, sind alle ersten Schraubenfedern mit nicht in wenigstens einer zur Walzendrehachse im Wesentlichen orthogonalen Ebene liegenden Federlängsachsen angeordnet sind.In the embodiment according to the invention, in which coil springs extending essentially in the direction of the roll axis of rotation and centering the compressor roll axially with respect to the machine frame can be dispensed with, all of the first coil springs are not included in at least one Roll axis of rotation essentially orthogonal plane lying longitudinal spring axes are arranged.

Um bei diesem Aufbau auch die radiale Zentrierung definiert zu unterstützen, sind bei wenigstens einem Paar von ersten Kopplungsbereichen die ersten Schraubenfedern an dem Maschinenrahmen jeweils in einem Abstützbereich abgestützt, und die Abstützbereiche weisen einen anderen Radialabstand zur Walzendrehachse auf, als der durch diese ersten Schraubenfedern mit dem Maschinenrahmen gekoppelte erste Kopplungsbereich.In order to support the radial centering in a defined manner in this construction, the first coil springs on at least one pair of first coupling areas are supported on the machine frame in each case in a support area, and the support areas have a different radial distance from the roll axis of rotation than that provided by these first coil springs the first coupling area coupled to the machine frame.

In der Verdichterwalze kann eine Vorrichtung zur Erzeugung einer im Wesentlichen periodischen Beschleunigung, vorzugsweise Oszillationsbeschleunigung oder/und Vibrationsbeschleunigung, vorgesehen sein.A device for generating an essentially periodic acceleration, preferably oscillation acceleration and / or vibration acceleration, can be provided in the compacting roller.

Die vorliegende Erfindung wird nachfolgend mit Bezug auf die beiliegenden Figuren detailliert beschrieben. Es zeigt:

Fig. 1
eine an einem Maschinenrahmen vermittels einer nicht gemäß den Prinzipien der vorliegenden Erfindung aufgebauten Aufhängungsanordnung getragene Verdichterwalze;
Fig. 2
die Verdichterwalze der Fig. 1 mit einer nicht gemäß den Prinzipien der vorliegenden Erfindung aufgebauten Aufhängungsanordnung in Radialansicht;
Fig. 3
eine an einem Maschinenrahmen getragene Verdichterwalze mit einer nicht gemäß den Prinzipien der vorliegenden Erfindung aufgebauten Ausgestaltungsart einer Aufhängungsanordnung für die Verdichterwalze;
Fig. 4
die Verdichterwalze der Fig. 3 mit einer nicht gemäß den Prinzipien der vorliegenden Erfindung aufgebauten zugeordneten Aufhängungsanordnung in Axialansicht;
Fig. 5
die Verdichterwalze der Fig. 3 mit einer zugeordneten Aufhängungsanordnung in Radialansicht;
Fig. 6
eine an einem Maschinenrahmen drehbar getragene Verdichterwalze mit einer erfindungsgemäßen Ausgestaltungsart einer Aufhängungsanordnung;
Fig. 7
die Verdichterwalze der Fig. 6 mit einer zugeordneten Aufhängungsanordnung in Axialansicht;
Fig. 8
die Verdichterwalze der Fig. 6 mit einer zugeordneten Aufhängungsanordnung in Radialansicht;
Fig. 9
einen Bodenverdichter mit einer an einem Maschinenrahmen getragenen Verdichterwalze in Seitenansicht.
The present invention is described in detail below with reference to the accompanying figures. It shows:
Fig. 1
a compacting roller carried on a machine frame by means of a suspension arrangement not constructed in accordance with the principles of the present invention;
Fig. 2
the compactor roller of the Fig. 1 with a suspension assembly not constructed in accordance with the principles of the present invention in a radial view;
Fig. 3
a compactor roller supported on a machine frame having a suspension arrangement arrangement for the compactor roller not constructed in accordance with the principles of the present invention;
Fig. 4
the compactor roller of the Fig. 3 with an associated suspension assembly not constructed in accordance with the principles of the present invention in axial view;
Fig. 5
the compactor roller of the Fig. 3 with an associated suspension arrangement in a radial view;
Fig. 6
a compressor roller rotatably supported on a machine frame with an embodiment of a suspension arrangement according to the invention;
Fig. 7
the compactor roller of the Fig. 6 with an associated suspension arrangement in axial view;
Fig. 8
the compactor roller of the Fig. 6 with an associated suspension arrangement in a radial view;
Fig. 9
a soil compactor with a compactor roller carried on a machine frame in side view.

In Fig. 9 ist ein allgemein mit 10 bezeichneter Bodenverdichter dargestellt, welcher an einem Hinterwagen 12 eine Führerkabine 14 und durch ein nicht dargestelltes Antriebsaggregat, das ebenfalls am Hinterwagen 12 vorgesehen sein kann, zum Voranbewegen des Bodenverdichters 10 antreibbare Räder 16 aufweist. Ein zum Lenken des Bodenverdichters 10 mit dem Hinterwagen 12 um eine im Wesentlichen vertikale Achse schwenkbar verbundener Vorderwagen 18 umfasst einen eine Verdichterwalze 20 umgreifenden Maschinenrahmen 22 mit im Wesentlichen in einer Bewegungsrichtung des Bodenverdichters 10 sich erstreckenden und zwischen sich die Verdichterwalze 20 aufnehmenden Rahmenlängsabschnitten 24. An diesen Rahmenlängsabschnitten 24 ist die Verdichterwalze 20 in ihren beiden axialen Endbereichen, axial hier bezogen auf eine Walzendrehachse, um welche die Verdichterwalze 20 am Maschinenrahmen 22 drehbar getragen ist, über nachfolgend detaillierter beschriebene Aufhängungsanordnungen derart getragen bzw. aufgehängt, dass die Verdichterwalze 20 eine Relativbewegung bezüglich des Maschinenrahmens 22 ausführen kann. Eine derartige Relativbewegbarkeit ermöglicht eine Schwingungsentkopplung zwischen der Verdichterwalze 20 und dem Maschinenrahmen 22, was insbesondere dann von substantieller Bedeutung ist, wenn an bzw. in der Verdichterwalze 20 eine in Fig. 9 nur schematisch angedeutete Vorrichtung 26 vorgesehen ist, mit welcher auf die Verdichterwalze 20 eine Kraft bzw. eine Beschleunigung ausgeübt werden kann, um diese beispielsweise in Vertikalrichtung V oder in Umfangsrichtung um die Walzendrehachse zu beschleunigen. Derartige zur Erzeugung einer Vibrationsbeschleunigung bzw. Vibrationsbewegung oder/und einer Oszillationsbeschleunigung bzw. Oszillationsbewegung der Verdichterwalze 20 einzusetzende Vorrichtungen sind im Stand der Technik hinlänglich bekannt und müssen nicht detaillierter beschrieben werden.In Fig. 9 A soil compactor, generally designated 10, is shown, which has a driver's cab 14 on a rear carriage 12 and wheels 16 which can be driven by a drive unit (not shown), which can also be provided on the rear carriage 12, for moving the soil compactor 10 forward. A front carriage 18, which is pivotably connected to steer the soil compactor 10 with the rear carriage 12 about a substantially vertical axis, comprises a machine frame 22 with a longitudinal frame section 24 An extending essentially in a direction of movement of the soil compactor 10 and receiving the compacting roller 20 between them In these longitudinal frame sections 24, the compressor roller 20 is supported or suspended in its two axial end regions, axially here in relation to a roller axis of rotation about which the compressor roller 20 is rotatably supported on the machine frame 22, by means of suspension arrangements described in more detail below, in such a way that the compressor roller 20 has a relative movement with respect to it of the machine frame 22 can execute. Such a relative mobility enables a vibration decoupling between the compression roller 20 and the machine frame 22, which is of substantial importance in particular if an in on or in the compression roller 20 Fig. 9 only schematically indicated device 26 is provided, with which a force or an acceleration can be exerted on the compressor roller 20 in order to accelerate the latter, for example, in the vertical direction V or in the circumferential direction about the roller axis of rotation. Devices of this type to be used to generate a vibration acceleration or vibration movement and / or an oscillation acceleration or oscillation movement of the compressor roller 20 are well known in the prior art and need not be described in more detail.

Nachfolgend werden mit Bezug auf die Fig. 2 bis 8 verschiedene Ausgestaltungsformen von Aufhängungsanordnungen beschrieben, mit welchen die Verdichterwalze 20 am Maschinenrahmen 22 getragen bzw. aufgehängt ist und welche aufgrund der zwischen der Verdichterwalze 20 und dem Maschinenrahmen 22 ermöglichten Relativbewegbarkeit eine Schwingungsentkopplung zwischen der Verdichterwalze 20 und dem Maschinenrahmen 22 bereitstellen, so dass im Bereich der Verdichterwalze 20 generierte Schwingungen im Wesentlichen nicht auf den Maschinenrahmen 22 und somit den Vorderwagen 18 bzw. auch den Hinterwagen 22 übertragen werden. Es ist hier darauf hinzuweisen, dass vorzugsweise die Verdichterwalze 20 in ihren beiden axialen Endbereichen über zueinander im Wesentlichen identisch gestaltete Aufhängungsanordnungen am Maschinenrahmen 20 getragen bzw. aufgehängt ist. Grundsätzlich könnten jedoch an den beiden axialen Endbereichen der Verdichterwalze 20 auch zueinander unterschiedlich gestaltete Aufhängungsanordnungen eingesetzt werden. Nachfolgend wird die Ausgestaltung derartiger Aufhängungsanordnungen jeweils mit Bezug auf eine an einem der beiden axialen Endbereiche einer Verdichterwalze 20 vorgesehene Aufhängungsanordnung beschrieben.Below are with reference to the 2 to 8 Various configurations of suspension arrangements are described, with which the compressor roller 20 is carried or suspended on the machine frame 22 and which, due to the relative mobility made possible between the compressor roller 20 and the machine frame 22, provide a vibration decoupling between the compressor roller 20 and the machine frame 22, so that in the area of Compressor roller 20 generated vibrations are essentially not transmitted to the machine frame 22 and thus the front end 18 or the rear end 22. It should be pointed out here that the compressor roller 20 is preferably carried or suspended on the machine frame 20 in its two axial end regions by means of suspension arrangements which are essentially identical to one another. Basically, however, differently designed suspension arrangements could also be used at the two axial end regions of the compressor roller 20. The design of such suspension arrangements is described below with reference to a suspension arrangement provided on one of the two axial end regions of a compression roller 20.

Eine Aufhängungsanordnung für die Verdichterwalze 20 ist in den Fig. 1 und 2 dargestellt. Man erkennt dabei anhand des in Fig. 2 dargestellten axialen Endbereichs 30 der Verdichterwalze 20, dass diese einen die Walzendrehachse A zylindrisch und mit kreisartiger Kontur umgebenden Walzenmantel 32 aufweist. Im axialen Endbereich 30 kann im Walzenmantel 32 eine Walzenscheibe 34, allgemein auch als Ronde bezeichnet, vorgesehen sein. An dieser Walzenscheibe 34 kann ein Fahrmotor 36 getragen sein, durch welchen die Verdichterwalze 20 zur Drehung um die Walzendrehachse A antreibbar ist. Dieser Aufbau kann insbesondere dann vorgesehen sein, wenn, anders als in Fig. 9 dargestellt, der Bodenverdichter 10 am Hinterwagen ebenfalls eine Verdichterwalze aufweist und zumindest eine der Verdichterwalzen zur Drehung anzutreiben ist. Weist der Bodenverdichter 10 die in Fig. 9 dargestellten Antriebsräder 16 auf, ist es nicht erforderlich, der Verdichterwalze 20 selbst einen eigenen Fahrmotor zuzuordnen. Gleichwohl kann an bzw. in der Verdichterwalze 20 dann der Antriebsmotor für die vorangehend beschriebene Vorrichtung 26 vorgesehen sein, um Unwuchtmassen derselben zur Drehung um jeweilige Drehachsen anzutreiben.A suspension arrangement for the compressor roller 20 is shown in FIGS 1 and 2 shown. You can see from the in Fig. 2 Shown axial end portion 30 of the compressor roller 20 that it has a cylindrical roller cylinder 32 with a circular contour surrounding the roller rotation axis A. In the axial end region 30, a roller disk 34, generally also referred to as a round blank, can be provided in the roller jacket 32. A drive motor 36 can be carried on this roller disk 34, by means of which the compressor roller 20 can be driven to rotate about the roller axis of rotation A. This structure can be provided in particular if, unlike in Fig. 9 shown, the soil compactor 10 on the rear carriage also has a compacting roller and at least one of the compacting rollers is to be driven to rotate. If the soil compactor 10 has the in Fig. 9 Drive wheels 16 shown, it is not necessary to assign the compressor roller 20 itself a separate drive motor. Nonetheless, the drive motor for the preceding one can then on or in the compressor roller 20 described device 26 may be provided to drive unbalanced masses thereof for rotation about respective axes of rotation.

Die Aufhängungsanordnung 28 umfasst eine allgemein mit 38 bezeichnete Walzenträgereinheit, an welcher die Verdichterwalze 20, beispielsweise über den Fahrmotor 36 oder ein an der Walzenscheibe 34 vorgesehenes Lagerungselement, um die Walzendrehachse A drehbar getragen ist. Die Walzenträgereinheit 38 umfasst ein erstes Trägerelement 40, an welchem die Verdichterwalze 20 um die Walzendrehachse A drehbar getragen ist.The suspension arrangement 28 comprises a roller support unit, generally designated 38, on which the compressor roller 20 is rotatably supported about the roller axis of rotation A, for example via the drive motor 36 or a bearing element provided on the roller disk 34. The roller carrier unit 38 comprises a first carrier element 40, on which the compressor roller 20 is rotatably supported about the roller axis of rotation A.

Die Walzenträgereinheit 38 umfasst ferner ein zweites Trägerelement 42, das in einem ersten Kopplungsbereich 44 am Maschinenrahmen 22 um eine zur Walzendrehachse A im Wesentlichen parallele Achse schwenkbar getragen ist. Zu diesem Zwecke kann am Maschinenrahmen 22 eine Trägerplatte 46 vorgesehen oder getragen sein, an welcher das zweite Trägerelement 42 schwenkbar getragen ist.The roller support unit 38 further comprises a second support element 42 which is supported in a first coupling area 44 on the machine frame 22 so as to be pivotable about an axis substantially parallel to the axis of rotation A of the roller. For this purpose, a support plate 46 can be provided or carried on the machine frame 22, on which the second support element 42 is pivotably supported.

In einem zweiten Kopplungsbereich 48 ist das zweite Trägerelement 42 über eine Schraubenfeder 50 an den Maschinenrahmen 22, beispielsweise die Trägerplatte 46, angekoppelt. Dazu kann am Maschinenrahmen 22 bzw. der Trägerplatte 46 ein Abstützbereich 52 vorgesehen sein, an welchem einer der beiden Endbereiche der Schraubenfeder 50 angreift, während der andere der beiden Endbereiche der Schraubenfeder 50 am zweiten Kopplungsbereich 48 des zweiten Trägerelements 42 angreift. Man erkennt in der Darstellung der Fig. 1 und 2, dass das zweite Trägerelement 42 sich näherungsweise in Horizontalrichtung H erstreckt, während die Schraubenfeder 50 sich näherungsweise in Vertikalrichtung V erstreckt.In a second coupling area 48, the second carrier element 42 is coupled to the machine frame 22, for example the carrier plate 46, via a helical spring 50. For this purpose, a support area 52 can be provided on the machine frame 22 or the support plate 46, on which one of the two end areas of the coil spring 50 engages, while the other of the two end areas of the coil spring 50 engages on the second coupling area 48 of the second support element 42. One recognizes in the representation of the 1 and 2 that the second carrier element 42 extends approximately in the horizontal direction H, while the coil spring 50 extends approximately in the vertical direction V.

Das erste Trägerelement 40 ist in einem dritten Kopplungsbereich 54 mit dem zweiten Trägerelement 42 schwenkbar verbunden. Der dritte Kopplungsbereich 54 liegt dabei in einer Längserstreckungsrichtung des zweiten Trägerelements 42 zwischen dem ersten Kopplungsbereich 44 und dem zweiten Kopplungsbereich 48, welche jeweils an Endbereichen des zweiten Trägerelements 42 vorgesehen sind.The first carrier element 40 is pivotally connected to the second carrier element 42 in a third coupling area 54. The third coupling area 54 lies in a longitudinal direction of extension of the second support element 42 between the first coupling area 44 and the second coupling area 48, which are each provided at end areas of the second support element 42.

In einem bezüglich der Walzendrehachse A dem dritten Kopplungsbereich 44 im Wesentlichen diametral gegenüberliegend angeordneten vierten Kopplungsbereich 56 greift eine Schraubenfeder 58 mit einem ihrer Endbereiche am ersten Trägerelement 40 an. Der andere Endbereich der Schraubenfeder 48 greift an einem beispielsweise ebenfalls an der Trägerplatte 46 bzw. am Maschinenrahmen 42 vorgesehenen Abstützbereich 60 an, so dass über die Schraubenfeder 58 das erste Trägerelement 40 und somit die Verdichterwalze 20 am Maschinenrahmen 22 abgestützt ist.In a fourth coupling region 56, which is arranged diametrically opposite the third coupling region 44 with respect to the axis of rotation A, a helical spring 58 engages with one of its end regions on the first carrier element 40. The other end region of the coil spring 48 engages on a support region 60, which is also provided, for example, on the carrier plate 46 or on the machine frame 42, so that the first carrier element 40 and thus the compressor roller 20 are supported on the machine frame 22 via the coil spring 58.

In Fig. 1 ist zu erkennen, dass das erste Trägerelement 40 sich näherungsweise in Vertikalrichtung V erstreckt, so dass der vierte Kopplungsbereich 56 und auch die Walzendrehachse in Vertikalrichtung V über dem dritten Kopplungsbereich 54 positioniert sind. Dies bedeutet, dass auch unter Schwerkrafteinwirkung kein wesentliches für eine Verschwenkung des ersten Trägerelements 40 bezüglich des zweiten Trägerelements 42 sorgendes Kippmoment entsteht. Vielmehr wird aufgrund des Umstandes, dass der Maschinenrahmen 22 an der Verdichterwalze 20 über die beiden miteinander gekoppelten Trägerelemente 40, 42 hängt, die Walzenträgereinheit 38 einen Zustand einnehmen, in welchem die beiden Trägerelemente 40, 42 bezüglich einander in einer einem Zustand minimaler potentieller Energie entsprechenden Relativschwenklage sind.In Fig. 1 It can be seen that the first carrier element 40 extends approximately in the vertical direction V, so that the fourth coupling region 56 and also the roll axis of rotation are positioned in the vertical direction V above the third coupling region 54. This means that, even under the influence of gravity, there is no significant tilting moment causing the first support element 40 to pivot with respect to the second support element 42. Rather, due to the fact that the machine frame 22 hangs on the compressor roller 20 via the two coupled support elements 40, 42, the roller support unit 38 will assume a state in which the two support elements 40, 42 correspond to one another in a state of minimal potential energy Relative swivel position.

Vermittels der gelenkigen Ausgestaltung der Walzenträgereinheit 38 kann die Verdichterwalze 20 unter Kompression bzw. Dehnung der Schraubenfeder 50 eine Relativbewegung bezüglich des Maschinenrahmens 22 im Wesentlichen in Vertikalrichtung V ausführen, während unter Kompression bzw. Dehnung der Schraubenfeder 58 die Verdichterwalze 20 bezüglich des Maschinenrahmens 22 im Wesentlichen eine Bewegung in Horizontalrichtung H ausführen kann. Es sei in diesem Zusammenhang darauf hingewiesen, dass als Horizontalrichtung H eine Richtung verstanden werden kann, welche im Wesentlichen parallel zu dem zu verdichtenden Untergrund U ist, während als Vertikalrichtung V eine Richtung verstanden werden kann, welche im Wesentlichen orthogonal zu dem zu verdichtenden Untergrund U ist.By means of the articulated design of the roller support unit 38, the compression roller 20 can carry out a relative movement with respect to the machine frame 22 essentially in the vertical direction V while compressing or stretching the coil spring 50, while with compression or expansion of the coil spring 58 the compression roller 20 can essentially execute with respect to the machine frame 22 can perform a movement in the horizontal direction H. It should be pointed out in this context that the horizontal direction H can be understood as a direction which is essentially parallel to the substrate U to be compacted, while the vertical direction V can be understood as a direction which is substantially orthogonal to the substrate U to be compacted is.

Durch die Aufhängungsanordnung 38 wird somit unter Kompression bzw. Dehnung der beiden Schraubenfedern 50, 58 eine Relativbewegung der Verdichterwalze 20 in jeder beliebigen Richtung im Wesentlichen orthogonal zur Walzendrehachse A ermöglicht, während in Richtung der Walzendrehachse A über die Walzenträgereinheit 38 die Verdichterwalze 20 definiert bezüglich des Maschinenrahmens 22 abgestützt ist. Dies gewährleistet, dass auch Querkräfte, also in Richtung der Walzendrehachse A wirkende Kräfte, zwischen der Verdichterwalze 20 und dem Maschinenrahmen 22 übertragen werden können, welche insbesondere beim Lenken des Bodenverdichters 10 auftreten können.The suspension arrangement 38 thus enables the compression roller 20 to move relative to the compression roller 20 in any direction substantially orthogonally to the axis of rotation A of the roll while compressing or stretching the two coil springs 50, 58, while in the direction of the axis of rotation A through the roller support unit 38, the compression roller 20 is defined with respect to the Machine frame 22 is supported. This ensures that transverse forces, that is to say forces acting in the direction of the axis of rotation A of the roller, can also be transmitted between the compacting roller 20 and the machine frame 22, which can occur in particular when the soil compactor 10 is being steered.

Eine weitere Aufhängungsanordnung ist in den Fig. 3 bis 5 gezeigt. In den Fig. 3 bis 5 sind Komponenten bzw. Baugruppen, welche vorangehend beschriebenen Komponenten bzw. Baugruppen hinsichtlich Aufbau bzw. Funktion entsprechen, mit dem gleichen Bezugszeichen unter Hinzufügung des Anhangs "a" bezeichnet.Another suspension arrangement is in the 3 to 5 shown. In the 3 to 5 Components or assemblies which correspond to the components or assemblies described above with regard to structure or function are designated with the same reference numerals with the addition of the appendix "a".

Die Aufhängungsanordnung 28a umfasst eine die Verdichterwalze 20a um die Walzendrehachse A drehbar tragende Walzenträgereinheit 38a mit einem im Wesentlichen kreuzförmig ausgestalteten Trägerelement 64a. Ausgehend von einem zentralen, die Verdichterwalze 20 drehbar lagernden Körperabschnitt 66a erstrecken sich vier Kopplungsarme 68a, 70a, 72a, 74a mit einem gegenseitigen Winkelabstand von etwa 90° zueinander, so dass die Kopplungsarme 68a und 72a bezüglich der Walzendrehachse A einander diametral gegenüberliegend angeordnet sind. Entsprechend sind die Kopplungsarme 70a, 74a einander bezüglich der Walzendrehachse A diametral gegenüberliegend angeordnet. In jedem der von der Walzendrehachse A entfernten Endbereiche der Kopplungsarme 68a, 70a, 72a, 74a ist jeweils ein erster Kopplungsbereich 76a, 78a, 80a, 82a gebildet. In jedem der ersten Kopplungsbereiche 76a, 78a, 80a, 82a ist das Trägerelement 64a vermittels zweier Schraubenfedern 84a, 86a mit dem Maschinenrahmen 22a bzw. der daran vorgesehenen Trägerplatte 46a gekoppelt. Dabei erkennt man anhand der Fig. 4 und 5, dass die beiden Schraubenfedern 84a, 86a, über welche der in Vertikalrichtung ganz oben positionierte erste Kopplungsbereich 76a mit dem Maschinenrahmen 22a gekoppelt ist, mit zueinander angewinkelten Federlängsachsen F angeordnet sind, was gleichermaßen auch zutrifft für die den in Vertikalrichtung am weitesten unten liegend positionierten ersten Kopplungsbereich 80a an den Maschinenrahmen 22a ankoppelnden Schraubenfedern 84a, 86a.The suspension arrangement 28a comprises a roller carrier unit 38a, which rotatably supports the compressor roller 20a about the roller axis of rotation A, and has a carrier element 64a which is essentially cruciform. Starting from a central body section 66a which rotatably supports the compressor roller 20, four coupling arms 68a, 70a, 72a, 74a extend at a mutual angular distance of approximately 90 ° to one another, so that the coupling arms 68a and 72a are arranged diametrically opposite one another with respect to the roller axis of rotation A. Correspondingly, the coupling arms 70a, 74a are arranged diametrically opposite one another with respect to the roll axis of rotation A. A first coupling region 76a, 78a, 80a, 82a is formed in each of the end regions of the coupling arms 68a, 70a, 72a, 74a that are distant from the roller axis of rotation A. In each of the first coupling areas 76a, 78a, 80a, 82a, the carrier element 64a is coupled to the machine frame 22a or the carrier plate 46a provided thereon by means of two coil springs 84a, 86a. You can see from the 4 and 5 that the two coil springs 84a, 86a, via which the first coupling region 76a positioned at the top in the vertical direction is coupled to the machine frame 22a, are arranged with spring longitudinal axes F angled to one another, which also applies in the same way to the coil springs 84a, 86a which couple the first coupling region 80a positioned at the lowest point in the vertical direction to the machine frame 22a.

Bei den beiden in Vertikalrichtung V mittig, also im Wesentlichen auf gleicher Höhe wie die Walzendrehachse A angeordneten ersten Kopplungsbereiche 78a, 82a sind die diese jeweils an den Maschinenrahmen 22a ankoppelnden Schraubenfedern 84a, 86a mit zueinander im Wesentlichen parallelen Federlängsachsen F und somit einander im Wesentlichen auch fortsetzend angeordnet. Die Positionierung der insbesondere mit den ersten Kopplungsbereichen 76a, 80a zusammenwirkenden Schraubenfedern 84a, 86a schräg bezüglich der Horizontalrichtung H ermöglicht es, ein Antriebsmoment mit großem Hebel zwischen der Verdichterwalze 20a und dem Maschinenrahmen 22a zu übertragen. Über die im Wesentlichen in Vertikalrichtung V orientierten Schraubenfedern 84a, 86a, über welche die ersten Kopplungsbereiche 70a bzw. 74a bezüglich des Maschinenrahmens 22a abgestützt sind, können in Vertikalrichtung V wirkende Kräfte effizient übertragen werden.In the case of the two first coupling areas 78a, 82a, which are arranged centrally in the vertical direction V, that is to say essentially at the same height as the roller axis of rotation A, the coil springs 84a, 86a, which are respectively coupled to the machine frame 22a, have spring longitudinal axes F which are essentially parallel to one another and thus essentially mutually arranged continuously. The positioning of the coil springs 84a, 86a, which cooperate, in particular, with the first coupling areas 76a, 80a obliquely with respect to the horizontal direction H, makes it possible to transmit a drive lever with a large lever between the compressor roller 20a and the machine frame 22a. Forces acting in the vertical direction V can be efficiently transmitted via the coil springs 84a, 86a, which are oriented essentially in the vertical direction V and via which the first coupling regions 70a and 74a are supported with respect to the machine frame 22a.

Aus den Fig. 3 bis 5 ist erkennbar, dass alle die ersten Kopplungsbereiche 76a, 78a, 80a, 82a an den Maschinenrahmen 22a bzw. die Trägerplatte 46a ankoppelnden Schraubenfedern 84a, 86a, welche im Sinne der vorliegenden Erfindung als erste Schraubenfedern zu interpretieren sind, mit ihren Federlängsachsen F in einer gemeinsamen zur Walzendrehachse A orthogonalen Ebene angeordnet sind, welche beispielsweise der Zeichenebene in Fig. 4 entsprechen kann. Die Endbereiche dieser ersten Schraubenfedern 84a, 86a, mit welchen diese an die ersten Kopplungsbereiche 76a, 78a, 80a, 82a angebunden sind, und die Endbereiche dieser ersten Schraubenfedern 84a, 86a, mit welchen diese an jeweilige Abstützbereiche 88a des Maschinenrahmens bzw. der Trägerplatte 46a angebunden sind, weisen somit in Richtung der Walzendrehachse A im Wesentlichen keinen Versatz zueinander auf.From the 3 to 5 It can be seen that all the coil springs 84a, 86a coupling the first coupling areas 76a, 78a, 80a, 82a to the machine frame 22a or the carrier plate 46a, which are to be interpreted as first coil springs in the sense of the present invention, with their longitudinal spring axes F in a common one are arranged orthogonal to the axis of rotation A, which, for example, the plane of the drawing in Fig. 4 can correspond. The end areas of these first coil springs 84a, 86a, with which they are connected to the first coupling areas 76a, 78a, 80a, 82a, and the end areas of these first coil springs 84a, 86a, with which they are connected to respective support areas 88a of the machine frame or the support plate 46a are connected, therefore have essentially no offset to one another in the direction of the axis of rotation A of the roll.

Diese ersten Schraubenfedern 84a, 86a sind somit im Wesentlichen dazu vorgesehen und geeignet, die Verdichterwalze 20a bezüglich des Maschinenrahmens 22a bei Auslenkungen senkrecht zur Walzendrehachse A abzustützen. Um auch eine axiale Zentrierung vorzusehen, sind am Trägerelement 64a beispielsweise am zentralen Körperbereich 66a desselben, zweite Kopplungsbereiche 90a vorgesehen, in welchen das Trägerelement 64a über zweite Schraubenfedern 92a mit dem Maschinenrahmen 22a, beispielsweise der Trägerplatte 46a, gekoppelt ist und somit in axialer Richtung abgestützt ist. Dabei sind die zweiten Schraubenfedern 92a vorzugsweise derart angeordnet, dass ihre Federlängsachsen F sich im Wesentlichen parallel zur Walzendrehachse A erstrecken. Beispielsweise können vier derartige zweite Schraubenfedern 92a mit gleichmäßigem Umfangsabstand zueinander vorgesehen sein. Um diese in einer Ebene liegende Anordnung der ersten Schraubenfedern 84a, 86a erreichen zu können, können beispielsweise am Trägerelement 64a bzw. den ersten Kopplungsbereichen 76a, 78a, 80a, 82a sowie an dem Maschinenrahmen 22a bzw. der Trägerplatte 46a jeweilige einander in Richtung der Walzendrehachse A überlappende Abschnitte 87a bzw. 89a vorgesehen sein.These first coil springs 84a, 86a are thus essentially provided and suitable for compressing the compressor roller 20a with respect to the machine frame 22a when deflections are perpendicular to the axis of rotation A of the roller to support. In order to also provide axial centering, second coupling regions 90a are provided on the carrier element 64a, for example on the central body region 66a thereof, in which the carrier element 64a is coupled to the machine frame 22a, for example the carrier plate 46a, via second helical springs 92a and is thus supported in the axial direction is. The second coil springs 92a are preferably arranged in such a way that their longitudinal spring axes F extend essentially parallel to the axis of rotation A of the roll. For example, four such second coil springs 92a can be provided with a uniform circumferential distance from one another. In order to be able to achieve this arrangement of the first coil springs 84a, 86a lying in one plane, for example on the carrier element 64a or the first coupling areas 76a, 78a, 80a, 82a and on the machine frame 22a or the carrier plate 46a, each can move in the direction of the roll rotation axis A overlapping sections 87a and 89a may be provided.

Auch bei der in den Fig. 3 bis 5 dargestellten Ausgestaltungsart ist die Verdichterwalze 20a durch die ersten Schraubenfedern 84a, 86a im Wesentlichen für eine Bewegung senkrecht zur Walzendrehachse A bezüglich des Maschinenrahmens 22a abgestützt und somit sowohl in Vertikalrichtung V, als auch in Horizontalrichtung H bezüglich des Maschinenrahmens 22a bewegbar. Die definierte axiale Positionierung und insbesondere auch die Übertragung axial wirkender Kräfte, also beispielsweise der Lenkkräfte, erfolgt im Wesentlichen über die zweiten Schraubenfedern 92a. Bei einer alternativen Ausgestaltungsart können an Stelle der zweiten Schraubenfedern eine oder mehrere beispielsweise im Wesentlichen in Richtung der Walzendrehachse A sich erstreckende Koppelstangen vorgesehen sein, welche an der Trägerplatte 46a einerseits und dem Trägerelement 64a andererseits abgestützt sind, wobei in zumindest einem ihrer Endbereiche derartige Koppelstangen elastisch, beispielsweise über ein Gummilager, abgestützt sind, um eine Bewegung der Verdichterwalze 20a in Richtung der Walzendrehachse A zuzulassen.Even in the 3 to 5 In the embodiment shown, the compressor roller 20a is supported by the first coil springs 84a, 86a essentially for a movement perpendicular to the axis of rotation A of the machine with respect to the machine frame 22a and can thus be moved both in the vertical direction V and in the horizontal direction H with respect to the machine frame 22a. The defined axial positioning and in particular also the transmission of axially acting forces, that is to say, for example, the steering forces, essentially takes place via the second coil springs 92a. In an alternative embodiment, instead of the second helical springs, one or more coupling rods, for example essentially extending in the direction of the axis of rotation of the roller A, can be provided, which are supported on the carrier plate 46a on the one hand and the carrier element 64a on the other, such coupling rods being elastic in at least one of their end regions , for example via a rubber bearing, are supported in order to permit movement of the compressor roller 20a in the direction of the roller axis of rotation A.

Eine erfindungsgemäße Ausgestaltung einer Aufhängungsanordnung ist in den Fig. 6 bis 8 dargestellt. In diesen Figuren sind Komponenten, welche sich hinsichtlich Aufbau bzw. Funktion vorangehend beschriebenen Komponenten entsprechen, mit dem gleichen Bezugszeichen unter Hinzufügung eines Anhangs "b" bezeichnet.An embodiment of a suspension arrangement according to the invention is shown in FIGS 6 to 8 shown. In these figures are Components which correspond to the components or components described above in terms of structure or function are identified by the same reference number with the addition of an appendix "b".

Bei der in den Fig. 6 bis 8 dargestellten Ausgestaltungsform weist das Trägerelement 64b der Walzenträgereinheit 38b einer jeweiligen Aufhängungsanordnung 28b nur die beiden im Wesentlichen in vertikaler Richtung sich erstreckenden Kopplungsarme 68b und 72b mit den daran vorgesehenen ersten Kopplungsbereichen 76b, 80b auf. Jeder dieser beiden ersten Kopplungsbereiche 76b, 80b ist wieder über zwei Schraubenfedern 84b, 86b mit dem Maschinenrahmen 22b bzw. einer daran vorgesehenen Trägerplatte 46b gekoppelt. Anders als bei der in den Fig. 3 bis 5 gezeigten Ausgestaltungsart, liegen die ersten Schraubenfedern 84b, 86b mit ihren jeweiligen Federlängsachsen F nicht in einer zur Walzendrehachse A im Wesentlichen orthogonalen Ebene. Hier sind die ersten Kopplungsbereiche 76b, 80b und die Abstützbereiche 88a, in welchen die Schraubenfedern 84b, 86b an der Trägerplatte 46b bzw. am Maschinenrahmen 22b angreifen, nicht nur in Umfangsrichtung um die Walzendrehachse A, sondern auch in Richtung der Walzendrehachse A zueinander versetzt.In the in the 6 to 8 In the embodiment shown, the carrier element 64b of the roller carrier unit 38b of a respective suspension arrangement 28b has only the two coupling arms 68b and 72b, which extend essentially in the vertical direction, with the first coupling regions 76b, 80b provided thereon. Each of these two first coupling areas 76b, 80b is again coupled to the machine frame 22b or a support plate 46b provided thereon via two helical springs 84b, 86b. Unlike the one in the 3 to 5 shown embodiment, the first coil springs 84b, 86b with their respective longitudinal spring axes F are not in a plane substantially orthogonal to the axis of rotation A of the roll. Here, the first coupling areas 76b, 80b and the support areas 88a, in which the coil springs 84b, 86b engage on the carrier plate 46b or on the machine frame 22b, are offset not only in the circumferential direction about the roll rotation axis A, but also in the direction of the roll rotation axis A.

Bei dieser Ausgestaltungsform ist die Verdichterwalze 20b über die ersten Schraubenfedern 84b, 86b nicht nur in einer Richtung senkrecht zur Walzendrehachse A am Maschinenrahmen 22b bewegbar getragen, sondern ist bezüglich diesem auch in Richtung der Walzendrehachse A abgestützt bzw. zentriert gehalten, insbesondere wenn an beiden axialen Endbereichen der Verdichterwalze 22b zueinander im Wesentlichen identisch aufgebaute Aufhängungsanordnungen 28b für die Aufhängung der Verdichterwalze 20b am Maschinenrahmen 22b eingesetzt werden. Es kann bei dieser Ausgestaltungsform somit auf die bei der Ausgestaltungsform der Fig. 3 bis 5 eingesetzten, im Wesentlichen in Richtung der Walzendrehachse A sich erstreckenden zweiten Schraubenfedern verzichtet werden. Dies vereinfacht den Aufbau einer jeweiligen Aufhängungsanordnung 28b substantiell, da bei jeder Aufhängungsanordnung 28b insgesamt nur vier erste Schraubenfedern 84b, 86b und keine zweiten Schraubenfedern eingesetzt werden. Dazu ist es besonders vorteilhaft, dass die beiden ersten Kopplungsbereiche 76b, 80b in Vertikalrichtung V über bzw. unter der Walzendrehachse A angeordnet sind, die beiden Kopplungsarme 68b, 72b sich also im Wesentlichen in Vertikalrichtung V erstrecken. Über die mit diesen beiden ersten Kopplungsbereichen 76b, 80b zusammenwirkenden Schraubenfedern 84b, 86b können somit insbesondere in Vertikalrichtung wirkende Kräfte effizient übertragen werden, wobei zu unterstellen ist, dass aufgrund des Gewichts des Bodenverdichters 10 diese in Vertikalrichtung wirkenden und abzustützenden Kräfte deutlich größer sein werden, als die im Verdichtungsbetrieb in Horizontalrichtung H wirkenden Kräfte. Gleichwohl ist auch bei dieser Ausgestaltung einer Aufhängungsanordnung 28b dafür gesorgt, dass über die die Verdichterwalze 20b mit dem Maschinenrahmen 22b koppelnden ersten Schraubenfedern 84b, 86b eine effiziente Schwingungsentkopplung erreicht wird, so dass im Bereich der Verdichterwalze 22b entstehende periodische Bewegungen bzw. Beschleunigungen im Wesentlichen nicht auf den Maschinenrahmen 22b übertragen werden.In this embodiment, the compression roller 20b is not only movably supported on the machine frame 22b via the first coil springs 84b, 86b in a direction perpendicular to the roller axis of rotation A, but is also supported or centered with respect to the latter in the direction of the roller axis of rotation A, in particular when on both axial axes End regions of the compressor roller 22b are used essentially identical suspension arrangements 28b for the suspension of the compressor roller 20b on the machine frame 22b. In this embodiment, it can therefore be based on that in the embodiment of 3 to 5 second coil springs used, which essentially extend in the direction of the roll axis of rotation A, are dispensed with. This substantially simplifies the construction of a respective suspension arrangement 28b, since only a total of four first coil springs 84b, 86b and no second coil springs are used in each suspension arrangement 28b. For this purpose, it is particularly advantageous that the two first coupling areas 76b, 80b are arranged in the vertical direction V above or below the roll axis of rotation A, that is to say the two coupling arms 68b, 72b essentially extend in the vertical direction V. Forces that act with these two first coupling areas 76b, 80b can thus be efficiently transmitted, particularly in the vertical direction, whereby it must be assumed that, due to the weight of the soil compactor 10, these forces to be supported and supported in the vertical direction will be significantly greater, than the forces acting in the horizontal direction H in the compression mode. Nevertheless, this embodiment of a suspension arrangement 28b also ensures that efficient vibration decoupling is achieved via the first coil springs 84b, 86b coupling the compressor roller 20b to the machine frame 22b, so that periodic movements or accelerations occurring in the region of the compressor roller 22b essentially do not occur be transferred to the machine frame 22b.

Alle Ausgestaltungsformen einer Aufhängungsanordnung für eine Verdichterwalze nutzen den Vorteil, dass durch den Einsatz von Schraubenfedern als die Aufhängungskräfte übertragende elastische Elemente zwar eine hervorragende Schwingungsentkopplung zwischen der Verdichterwalze und dem diese drehbar tragenden Maschinenrahmen erreicht wird, dass jedoch eine wesentliche Dämpfungswirkung durch Absorption von Energie in den elastisch verformbaren Elementen nicht auftritt. Die im Bereich der Verdichterwalze bereitgestellte Energie, mit welcher diese in eine periodische Bewegung versetzt werden soll, also beispielsweise eine im Wesentlichen in Vertikalrichtung V gerichtete Vibrationsbewegung bzw. Vibrationsbeschleunigung oder eine im Wesentlichen in Umfangsichtung gerichtete Oszillationsbewegung bzw. Oszillationsbeschleunigung, kann im Wesentlichen vollständig für die Erzeugung dieser Bewegung genutzt werden.All embodiments of a suspension arrangement for a compressor roller take advantage of the fact that by using helical springs as the elastic elements which transmit the suspension forces, excellent vibration decoupling is achieved between the compressor roller and the machine frame which rotatably supports it, but that a substantial damping effect is achieved by absorption of energy in the elastically deformable elements does not occur. The energy provided in the area of the compressor roller with which it is to be set in a periodic movement, i.e. for example a vibration movement or vibration acceleration directed essentially in the vertical direction V or an oscillation movement or vibration acceleration directed essentially in the circumferential direction, can essentially be completely for the Generation of this movement can be used.

Claims (3)

  1. A soil compactor, comprising at least one compactor roller (20b) supported on a machine chassis to be rotatable about a roller rotary axis (A), wherein at least one compactor roller (20b) is supported in its two axial end areas (30b) respectively via a suspension assembly (28b) on the machine chassis (22b) to be movable with respect to the same, wherein at least one suspension assembly (22b) comprises at least one helical spring (84b, 86b) coupling the compactor roller (20b) movably to the machine chassis, wherein the at least one suspension assembly (28b) comprises a roller carrier assembly (38b), wherein the compactor roller (20b) is supported on the roller carrier assembly (38b) to be rotatable about the roller rotary axis (A), wherein the roller carrier assembly (38b) is coupled to the machine chassis (22b) via at least one helical spring (84b, 86b), wherein the roller carrier assembly (38b) comprises a carrier element (64b), which supports the compactor roller (20b) to be rotatable about the roller rotary axis (A), wherein the carrier element (64b) is coupled to the machine chassis (22b) in a plurality of first coupling areas (76b, 80b) arranged at a circumferential spacing from one another about the roller axis of rotation (A) via at least one helical spring (84b, 86b) respectively, wherein at least one pair of first coupling areas (76b, 80b), situated diametrically opposite one another with respect to the roller axis of rotation (A), is provided on the carrier element (64a; 64b), wherein in at least one first coupling area (76b, 80b), the carrier element (64b) is coupled to the machine chassis (22b) via at least two first helical springs (84b, 86b), characterized in that all first helical springs (84b, 86b) are arranged with spring longitudinal axes (F) not situated in at least one plane orthogonal to the roller axis of rotation (A), and in that in at least one pair of first coupling areas (76b, 80b), the first helical springs (84b, 86b) are supported respectively on the machine chassis (22b) in a support area (88b), and that the support areas (88b) have a different radial spacing to the roller axis of rotation (A) than the first coupling area (76b, 80b) coupled to the machine chassis (22b) via these first helical springs (84b, 86b).
  2. The soil compactor according to claim 1,
    characterized in that in each first coupling area (76b, 80b) the carrier element (64b) is coupled to the machine chassis (22b) via at least two first helical springs (84b, 86b).
  3. The soil compactor according to one of the preceding claims
    characterized in that a device for generating an essentially periodic acceleration, preferably an oscillating acceleration and/or a vibrational acceleration, is provided in the compactor roller (20b).
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US20180216300A1 (en) 2018-08-02
US10538885B2 (en) 2020-01-21
JP2019090323A (en) 2019-06-13
JP2018127881A (en) 2018-08-16
EP3354796A1 (en) 2018-08-01
EP3517683A1 (en) 2019-07-31
JP6511549B2 (en) 2019-05-15
CN208088065U (en) 2018-11-13
DE102017101685A1 (en) 2018-08-02
JP6686196B2 (en) 2020-04-22
CN111877098B (en) 2022-05-31
EP3722506A1 (en) 2020-10-14
CN108374306B (en) 2020-10-23
EP3722506B1 (en) 2022-05-18
CN108374306A (en) 2018-08-07
CN111877098A (en) 2020-11-03
EP3354796B1 (en) 2020-04-08

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