EP3722506B1 - Soil compactor - Google Patents

Soil compactor Download PDF

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Publication number
EP3722506B1
EP3722506B1 EP20176432.1A EP20176432A EP3722506B1 EP 3722506 B1 EP3722506 B1 EP 3722506B1 EP 20176432 A EP20176432 A EP 20176432A EP 3722506 B1 EP3722506 B1 EP 3722506B1
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EP
European Patent Office
Prior art keywords
roller
compactor
coupling
rotation
axis
Prior art date
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Active
Application number
EP20176432.1A
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German (de)
French (fr)
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EP3722506A1 (en
Inventor
Markus Golbs
Georg Troeger
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Hamm AG
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Hamm AG
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Publication of EP3722506A1 publication Critical patent/EP3722506A1/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
    • 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
    • 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 compactor roller rotatably supported on a machine frame about a roller axis of rotation, wherein at least one compactor roller is movably supported in its two axial end regions via a suspension arrangement on the machine frame.
  • the same devices can be used to improve the compaction efficiency in association with at least one compactor roller, which generate a periodic force acting on the compactor roller during compaction operation when the compactor roller is rolling on a substrate to be compacted.
  • the force can be exerted substantially in the vertical direction, so that a vibrational acceleration or vibrational movement of the compactor roller is produced, or it can be exerted in a circumferential direction, so that an oscillatory acceleration or oscillatory movement of the compactor roller is produced.
  • the compactor rollers are carried at their two axial end regions via suspensions on the machine frame that allow relative movement with respect to the machine frame .
  • suspensions for example, it is from the EP 0 168 72 A2 known to use pneumatic suspensions.
  • U.S. 5,71 6,162 it is known to use suspensions with elastically deformable suspension elements made of elastomeric material.
  • a soil compactor according to the preamble of claim 1 is from U.S. 3,052,166 A famous.
  • a compacting roller is rotatably supported on a machine frame about a roller axis of rotation via suspension assemblies provided at axial ends thereof.
  • the Suspension arrangements each comprise a support element which rotatably supports the compactor roller and is designed with an essentially square outer peripheral contour, which is surrounded by a frame-like roller carrier which is carried on a machine frame and has an essentially square inner peripheral contour.
  • Helical springs oriented parallel to one another extend between parallel opposite sides of the carrier element or the roller carrier, each with a radial spacing, so that diametrically opposite coupling areas are formed with respect to the roller axis of rotation, with each such coupling area comprising two helical springs which, starting from the carrier element, extend parallel to one another extend to the roll support.
  • a soil compactor comprising at least one compactor roller supported on a machine frame so as to be rotatable about a roller axis of rotation, with at least one compactor roller being movably supported in its two axial end regions via a suspension arrangement on the machine frame, with at least one , preferably each suspension arrangement comprises at least one coil spring movably coupling the compactor drum to the machine frame.
  • the movement of the compactor roller permitted by the suspension arrangement in relation to the machine frame is a movement essentially transverse to the roller axis of rotation, if necessary also in the direction of the roller axis of rotation, i.e. a movement in addition to the basically existing rotatability of the compactor roller around the Roll axis of rotation is permitted relative movement between the compactor roll and the machine frame.
  • helical springs or at least one helical spring are used to enable a relative movement between the compactor 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 compactor roller to the machine frame, while on the other hand the elements used to provide this suspension, i.e. helical springs, themselves absorb essentially no energy , so that the force periodically exerted on a compactor roller to improve the compaction efficiency or the energy used for this purpose is essentially completely available in the region of the compactor roller for acceleration or for generating a periodic movement of the same.
  • coil springs for the suspension of a compactor roller allows a 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 transfer damping forces to the machine frame that are proportional to the speed.
  • helical springs are considered to be springs that can preferably be loaded in tension and compression in the direction of a spring longitudinal axis, have one or more spring coils, in particular springs that have spring coils surrounding a spring longitudinal axis with a pitch other than zero.
  • Such helical springs can have a constant radial dimension in the direction of the longitudinal axis of the spring, ie a substantially constant coil radius with respect to the longitudinal axis of the spring or a substantially constant radius of curvature of the spring coils.
  • 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 have a spring radius that varies at least in regions with respect to the longitudinal axis of the spring and thus a varying radius of curvature of the spring coils, for example to provide a substantially conical shape of a such a helical spring in which the spring coils expand radially outward in a spiral manner.
  • the at least one suspension arrangement comprises a roller carrier unit, the compactor roller being supported on the roller carrier unit so that it can rotate about the roller axis of rotation, and the roller carrier unit being supported via at least one Coil spring is coupled to the machine frame.
  • the roller support unit comprises a support element that supports the compactor roller so that it can rotate 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 regions that are arranged at a circumferential distance from one another about the axis of rotation of the roller .
  • At least one first coupling region preferably a plurality of first coupling regions that follow one another in the circumferential direction around the roller axis of rotation, is provided on the carrier element, and in at least one, preferably every first coupling region the carrier element is coupled to the machine frame via at least two first coil springs.
  • at least one pair of first coupling regions lying diametrically opposite one another with respect to the roller axis of rotation is provided on the carrier element.
  • two first coil springs extend from at least one pair of first coupling areas on each of the two first coupling areas, starting from a respective first coupling area approximately parallel to each other and in opposite directions, and in at least one other pair of first coupling portions on each of the two first coupling portions, two first coil springs extend angled toward each other and in opposite directions starting from a respective first coupling portion.
  • a configuration is particularly advantageous in which a pair of first coupling regions with first helical springs extending approximately parallel to one another and a pair of first coupling regions with angled first helical springs are provided on a carrier element, with preferably the first coupling regions of the one pair of first coupling regions and the first coupling areas of the other pair of first coupling areas are arranged alternately one after the other in the circumferential direction, and/or wherein preferably the first coupling areas with first helical springs angled towards one another are arranged approximately one above the other in the vertical direction and the first coupling areas with helical springs extending approximately parallel to one another in the vertical direction approximately lie at the same level.
  • first helical springs In order to ensure that the first helical springs essentially do not have to transmit any forces acting in the direction of the roller axis of rotation, it is proposed that at least some, preferably all, of the first helical springs be arranged with spring longitudinal axes lying in at least one plane that is essentially orthogonal to the roller axis of rotation.
  • the carrier element is coupled to the machine frame in at least one second coupling region via at least one second coil spring, and that a spring longitudinal axis of the at least one second coil spring is not in an axis of rotation in the roller Substantially orthogonal plane is located, preferably the longitudinal axis of the spring of at least one, preferably all of the second coil springs extending substantially in the direction of the axis of rotation of the roller.
  • a device for generating an essentially periodic acceleration, preferably oscillation acceleration and/or vibration acceleration, can be provided in the compactor roller.
  • a soil compactor generally designated 10, which has a driver's cab 14 on a rear carriage 12 and wheels 16 that 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 pivotably connected to the rear carriage 12 about a substantially vertical axis for steering the soil compactor 10 comprises a machine frame 22 enclosing a compactor roller 20 with extending essentially in a direction of movement of the soil compactor 10 and between them the longitudinal frame sections 24 receiving the compactor roller 20.
  • the compactor roller 20 is supported or suspended on these longitudinal frame sections 24 in its two axial end regions, axially here related to a roller axis of rotation about which the compactor roller 20 is rotatably supported on the machine frame 22, via suspension arrangements described in more detail below that the compactor roller 20 can perform a relative movement with respect to the machine frame 22.
  • Such relative mobility enables vibration decoupling between the compactor roller 20 and the machine frame 22, which is of substantial importance in particular when on or in the compactor roller 20 an in 9 only schematically indicated device 26 is provided, with which a force or an acceleration can be exerted on the compactor roller 20 in order to accelerate it, for example, in the vertical direction V or in the circumferential direction about the roller axis of rotation.
  • Such devices to be used for generating a vibration acceleration or vibration movement and/or an oscillation acceleration or oscillation movement of the compactor roller 20 are well known in the prior art and do not need to be described in more detail.
  • suspension arrangements that are designed differently from one another could also be used on the two axial end regions of the compactor roller 20 .
  • Configuration of such suspension arrangements are each described with reference to a suspension arrangement provided on one of the two axial end regions of a compactor roller 20 .
  • FIGS Figures 1 and 2 A first suspension arrangement for the compactor roller 20 is shown in FIGS Figures 1 and 2 shown.
  • a roller disk 34 also generally referred to as a blank, can be provided in the roller shell 32.
  • a drive motor 36 can be carried on this roller disk 34, by means of which the compactor roller 20 can be driven to rotate about the axis of rotation A of the roller.
  • This structure can be provided in particular when, unlike in 9 shown, the soil compactor 10 on the rear carriage also has a compactor roller and at least one of the compactor rollers is to be driven to rotate.
  • the drive motor for the device 26 described above can then be provided on or in the compactor roller 20 in order to drive unbalanced masses thereof for rotation about respective axes of rotation.
  • the suspension arrangement 28 comprises a roller carrier unit, generally designated 38, on which the compactor roller 20 is rotatably supported about the roller axis of rotation A, for example via the traction motor 36 or a bearing element provided on the roller disk 34.
  • the roller support unit 38 comprises a first support element 40 on which the compactor roller 20 is rotatably supported about the axis of rotation A of the roller.
  • the roller support unit 38 also includes 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 parallel to the axis of rotation A of the roller.
  • a carrier plate 46 can be provided on the machine frame 22 for this purpose or carried on which the second support member 42 is pivotally carried.
  • 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 carrier plate 46, on which one of the two end areas of the coil spring 50 acts, while the other of the two end areas of the coil spring 50 acts on the second coupling area 48 of the second carrier element 42.
  • the first carrier element 40 is pivotably connected to the second carrier element 42 in a third coupling region 54 .
  • the third coupling region 54 lies in a direction of longitudinal extension of the second carrier element 42 between the first coupling region 44 and the second coupling region 48 which are each provided on end regions of the second carrier element 42 .
  • a helical spring 58 engages with one of its end regions on the first carrier element 40 .
  • the other end area of the helical spring 48 acts on a support area 60, for example also provided on the carrier plate 46 or on the machine frame 42, so that the first carrier element 40 and thus the compactor roller 20 is supported on the machine frame 22 via the helical spring 58.
  • the first carrier element 40 extends approximately in the vertical direction V, so that the fourth coupling area 56 and also the roller axis of rotation are positioned in the vertical direction V above the third coupling area 54 .
  • the roller carrier unit 38 assumes a state in which the two carrier elements 40, 42 are in a state of minimum potential energy with respect to one another Relative pivot position are.
  • the compactor roller 20 can perform a relative movement with respect to the machine frame 22 essentially in the vertical direction V when the helical spring 50 is compressed or stretched, while the compactor roller 20 is essentially moved with respect to the machine frame 22 when the helical spring 58 is compressed or stretched 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 subsoil U to be compacted
  • the vertical direction V can be understood as a direction which is essentially orthogonal to the subsoil U to be compacted is.
  • the suspension arrangement 38 thus enables a relative movement of the compactor roller 20 in any desired direction, essentially orthogonal to the roller axis of rotation A, while compressing or stretching the two coil springs 50, 58, while in the direction of the roller axis of rotation A, the roller carrier unit 38 defines the compactor roller 20 with respect to the Machine frame 22 is supported. This ensures that transverse forces, ie forces acting in the direction of the roller axis of rotation A, can also be transmitted between the compactor roller 20 and the machine frame 22, which can occur in particular when the soil compactor 10 is steered.
  • FIG. 3 to 5 An inventive embodiment of a suspension assembly is in the Figures 3 to 5 shown.
  • components or assemblies which components or assemblies described above with regard to structure or function are denoted by the same reference numerals with the addition of the suffix "a".
  • the suspension arrangement 28a comprises a roller carrier unit 38a which supports the compactor roller 20a so as to be rotatable about the roller axis of rotation A and has a carrier element 64a which is designed essentially in the shape of a cross.
  • a roller carrier unit 38a which supports the compactor roller 20a so as to be rotatable about the roller axis of rotation A and has a carrier element 64a which is designed essentially in the shape of a cross.
  • 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 axis of rotation A of the roller.
  • a first coupling area 76a, 78a, 80a, 82a is formed in each of the end areas of the coupling arms 68a, 70a, 72a, 74a remote 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 helical springs 84a, 86a that couple them to the machine frame 22a have spring longitudinal axes F that are essentially parallel to one another and thus essentially to one another as well progressively arranged.
  • the positioning of the helical springs 84a, 86a, which interact in particular with the first coupling regions 76a, 80a, obliquely with respect to the horizontal direction H makes it possible to transmit a drive torque with great leverage between the compactor roller 20a and the machine frame 22a.
  • forces acting in the vertical direction V can be transmitted efficiently.
  • first coil springs 84a, 86a with which they are connected to the first coupling regions 76a, 78a, 80a, 82a, and the end regions of these first coil springs 84a, 86a, with which they are connected to respective support regions 88a of the machine frame or the carrier plate 46a are connected, thus have in the direction of the roller axis of rotation A essentially no offset to each other.
  • first helical springs 84a, 86a are thus essentially provided and suitable for supporting the compactor roller 20a with respect to the machine frame 22a in the event of deflections perpendicular to the axis of rotation A of the roller.
  • 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 via second coil springs 92a to the machine frame 22a, for example the carrier plate 46a, and is thus supported in the axial direction is.
  • the second helical 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 roller.
  • first coil springs 84a, 86a lying in one plane, for example, on the carrier element 64a or the first coupling regions 76a, 78a, 80a, 82a and on the machine frame 22a or sections 87a and 89a overlapping one another in the direction of the roller axis of rotation A can be provided on the carrier plate 46a.
  • the compactor roller 20a is supported by the first coil springs 84a, 86a essentially for a movement perpendicular to the roller axis of rotation A with respect to the machine frame 22a and can therefore be moved both in the vertical direction V and in the horizontal direction H with respect to the machine frame 22a.
  • one or more coupling rods can be provided, which extend, for example, essentially in the direction of the roller axis of rotation A and are supported on the carrier plate 46a on the one hand and the carrier element 64a on the other, with such coupling rods being elastic in at least one of their end regions are supported, for example via a rubber bearing, in order to allow movement of the compactor roller 20a in the direction of the axis of rotation A of the roller.
  • 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 and have the first coupling regions 76b, 80b provided thereon.
  • Each of these two first coupling regions 76b, 80b is again coupled via two coil springs 84b, 86b to the machine frame 22b or to a support plate 46b provided thereon.
  • the first coil springs 84b, 86b with their respective longitudinal spring axes F not in a plane that is essentially orthogonal to the axis of rotation A of the roller.
  • first coupling areas 76b, 80b and the support areas 88a in which the coil springs 84b, 86b act on the carrier plate 46b or on the machine frame 22b, are offset from one another not only in the circumferential direction about the roller axis of rotation A, but also in the direction of the roller axis of rotation A.
  • the compactor roller 20b is not only supported on the machine frame 22b via the first coil springs 84b, 86b so that it can move in a direction perpendicular to the roller axis of rotation A, but is also supported or centered with respect to it in the direction of the roller axis of rotation A, particularly if on both axial End regions of the compactor roller 22b are used to each other essentially identically constructed suspension arrangements 28b for the suspension of the compactor roller 20b on the machine frame 22b. It can thus in this embodiment on the in the embodiment of Figures 3 to 5 used, essentially in the direction of the roller axis of rotation A extending second coil springs are dispensed with.
  • first coupling regions 76b, 80b are arranged in the vertical direction V above or below the roller axis of rotation A, ie the two coupling arms 68b, 72b extend essentially in the vertical direction V.
  • the coil springs 84b, 86b interacting with these two first coupling regions 76b, 80b can thus be used to efficiently transmit forces acting in the vertical direction in particular, it being assumed that due to the weight of the soil compactor 10, these forces acting and having to be supported in the vertical direction will be significantly greater.
  • this embodiment of a suspension arrangement 28b also ensures that efficient vibration decoupling is achieved via the first coil springs 84b, 86b coupling the compactor roller 20b to the machine frame 22b, so that periodic movements occur in the region of the compactor roller 22b or accelerations are essentially not transmitted to the machine frame 22b.
  • All embodiments of a suspension arrangement for a compactor roller use the advantage that the use of coil springs as the elastic elements transmitting the suspension forces achieves excellent vibration decoupling between the compactor roller and the machine frame that rotatably supports it, but that there is a significant damping effect through the absorption of energy in the elastically deformable elements does not occur.
  • the energy provided in the area of the compactor roller, with which it is to be set into a periodic movement, for example a vibratory movement or vibration acceleration directed essentially in the vertical direction V or an oscillating movement or oscillation acceleration directed essentially in the circumferential direction, can be used essentially completely for the Generation of this movement are 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 compactor roller rotatably supported on a machine frame about a roller axis of rotation, wherein at least one compactor roller is movably supported in its two axial end regions via a suspension arrangement on the machine frame.

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 soil compactors, the same devices can be used to improve the compaction efficiency in association with at least one compactor roller, which generate a periodic force acting on the compactor roller during compaction operation when the compactor roller is rolling on a substrate to be compacted. The force can be exerted substantially in the vertical direction, so that a vibrational acceleration or vibrational movement of the compactor roller is produced, or it can be exerted in a circumferential direction, so that an oscillatory acceleration or oscillatory movement of the compactor roller is produced.

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, particularly in the case of soil compactors constructed with such compactor rollers, that the force periodically acting on a compactor roller is not transmitted to the machine frame that rotatably supports the compactor roller, the compactor rollers are carried at their two axial end regions via suspensions on the machine frame that allow 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 U.S. 5,71 6,162 it is known to use suspensions with elastically deformable suspension elements made of elastomeric material.

Ein Bodenverdichter gemäß dem Oberbegriff des Anspruchs 1 ist aus der US 3 052 166 A bekannt. Bei diesem Bodenverdichter ist eine Verdichterwalze über an axialen Enden derselben vorgesehene Aufhängungsanordnungen an einem Maschinenrahmen um eine Walzendrehachse drehbar getragen. Die Aufhängungsanordnungen umfassen jeweils ein die Verdichterwalze drehbar tragendes, mit im Wesentlichen quadratischer Außenumfangskontur ausgebildetes Trägerelement, welches von einem an einem Maschinenrahmen getragenen, rahmenartigen Walzenträger mit im Wesentlichen quadratischer Innenumfangskontur umgeben ist. Zwischen einander jeweils mit radialem Abstand parallel gegenüberliegenden Seiten des Trägerelements bzw. des Walzenträgers erstrecken sich zueinander parallel orientierte Schraubenfedern, so dass bezüglich der Walzendrehachse einander diametral gegenüberliegende Kopplungsbereiche gebildet sind, wobei jeder derartige Kopplungsbereich zwei Schraubenfedern umfasst, die sich ausgehend von dem Trägerelement zueinander parallel zu dem Walzenträger erstrecken.A soil compactor according to the preamble of claim 1 is from U.S. 3,052,166 A famous. In this soil compactor, a compacting roller is rotatably supported on a machine frame about a roller axis of rotation via suspension assemblies provided at axial ends thereof. the Suspension arrangements each comprise a support element which rotatably supports the compactor roller and is designed with an essentially square outer peripheral contour, which is surrounded by a frame-like roller carrier which is carried on a machine frame and has an essentially square inner peripheral contour. Helical springs oriented parallel to one another extend between parallel opposite sides of the carrier element or the roller carrier, each with a radial spacing, so that diametrically opposite coupling areas are formed with respect to the roller axis of rotation, with each such coupling area comprising two helical springs which, starting from the carrier element, extend parallel to one another extend to the roll support.

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 in a manner substantially not impairing the compaction efficiency.

Erfindungsgemäß wird diese Aufgabe gelöst durch einen Bodenverdichter gemäß Anspruch 1, 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, 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, comprising at least one compactor roller supported on a machine frame so as to be rotatable about a roller axis of rotation, with at least one compactor roller being movably supported in its two axial end regions via a suspension arrangement on the machine frame, with at least one , preferably each suspension arrangement comprises at least one coil spring movably coupling the compactor drum 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 compactor roller permitted by the suspension arrangement in relation to the machine frame is a movement essentially transverse to the roller axis of rotation, if necessary also in the direction of the roller axis of rotation, i.e. a movement in addition to the basically existing rotatability of the compactor roller around the Roll axis of rotation is permitted relative movement between the compactor roll 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 construction according to the invention, helical springs or at least one helical spring are used to enable a relative movement between the compactor 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 compactor roller to the machine frame, while on the other hand the elements used to provide this suspension, i.e. helical springs, themselves absorb essentially no energy , so that the force periodically exerted on a compactor roller to improve the compaction efficiency or the energy used for this purpose is essentially completely available in the region of the compactor roller for acceleration or for generating a periodic movement of the same. Furthermore, the use of coil springs for the suspension of a compactor roller allows a 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 transfer damping forces to the machine frame that are proportional to the speed.

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 for the purposes of the present invention, helical springs are considered to be springs that can preferably be loaded in tension and compression in the direction of a spring longitudinal axis, have one or more spring coils, in particular springs that have spring coils surrounding a spring longitudinal axis with a pitch other than zero. Such helical springs can have a constant radial dimension in the direction of the longitudinal axis of the spring, ie a substantially constant coil radius with respect to the longitudinal axis of the spring or a substantially constant radius of curvature of the spring coils. 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 have a spring radius that varies at least in regions with respect to the longitudinal axis of the spring and thus a varying radius of curvature of the spring coils, for example to provide a substantially conical shape of a such a helical spring in which the spring coils expand radially outward in a spiral manner.

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 compactor roller to be suspended in a simple manner via at least one helical spring while enabling the rotational movement of the compactor roller about the roller axis of rotation, the at least one suspension arrangement comprises a roller carrier unit, the compactor roller being supported on the roller carrier unit so that it can rotate about the roller axis of rotation, and the roller carrier unit being 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 that supports the compactor roller so that it can rotate 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 regions that are arranged at a circumferential distance from one another about the axis of rotation of the roller .

Um eine in mehreren Richtungen stabile Abstützwechselwirkung zwischen dem Trägerelement und dem Maschinenrahmen erreichen zu können, ist an dem Trägerelement wenigstens ein erster Kopplungsbereich, vorzugsweise 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 dabei vorgesehen, dass an dem Trägerelement wenigstens ein Paar von bezüglich der Walzendrehachse einander diametral gegenüberliegenden ersten Kopplungsbereichen vorgesehen ist.In order to be able to achieve a support interaction that is stable in several directions between the carrier element and the machine frame, at least one first coupling region, preferably a plurality of first coupling regions that follow one another in the circumferential direction around the roller axis of rotation, is provided on the carrier element, and in at least one, preferably every first coupling region the carrier element is coupled to the machine frame via at least two first coil springs. In particular, it is provided that at least one pair of first coupling regions lying diametrically opposite one another with respect to the roller axis of rotation is provided on the carrier element.

Für eine gleichmäßige Kraftübertragung zwischen dem Trägerelement und dem Maschinenrahmen erstrecken bei wenigstens einem Paar von ersten Kopplungsbereichen an jedem der beiden ersten Kopplungsbereiche zwei erste Schraubenfedern sich ausgehend von einem jeweiligen ersten Kopplungsbereich näherungsweise parallel zueinander und in entgegengesetzter Richtung, und erstrecken bei wenigstens einem weiteren Paar von ersten Kopplungsbereichen an jedem der beiden ersten Kopplungsbereiche zwei erste Schraubenfedern sich ausgehend von einem jeweiligen ersten Kopplungsbereich zueinander angewinkelt und in entgegengesetzter Richtung.For a uniform power transmission between the carrier element and the machine frame, two first coil springs extend from at least one pair of first coupling areas on each of the two first coupling areas, starting from a respective first coupling area approximately parallel to each other and in opposite directions, and in at least one other pair of first coupling portions on each of the two first coupling portions, two first coil springs extend angled toward each other and in opposite directions starting from a respective first coupling portion.

Besonders vorteilhaft ist dabei eine Ausgestaltung, bei welcher an einem Trägerelement ein Paar von ersten Kopplungsbereichen mit zueinander sich näherungsweise parallel erstreckenden ersten Schraubenfedern und ein Paar von ersten Kopplungsbereichen mit zueinander angewinkelten ersten Schraubenfedern vorgesehen sind, wobei vorzugsweise die ersten Kopplungsbereiche des einen Paares von ersten Kopplungsbereichen und die ersten Kopplungsbereiche des anderen Paares von ersten Kopplungsbereichen in Umfangsrichtung alternierend aufeinanderfolgend angeordnet sind, oder/und wobei vorzugsweise die ersten Kopplungsbereiche mit zueinander angewinkelten ersten Schraubenfedern in Vertikalrichtung näherungsweise übereinander angeordnet sind und die ersten Kopplungsbereiche mit zueinander sich näherungsweise parallel erstreckenden Schraubenfedern in Vertikalrichtung näherungsweise auf gleicher Höhe liegen. Um zu gewährleisten, dass die ersten Schraubenfedern im Wesentlichen keine in Richtung der Walzendrehachse wirksamen Kräfte zu übertragen haben, wird vorgeschlagen, dass wenigstens ein Teil der, vorzugsweise alle ersten Schraubenfedern mit in wenigstens einer zur Walzendrehachse im Wesentlichen orthogonalen Ebene liegenden Federlängsachsen angeordnet sind.A configuration is particularly advantageous in which a pair of first coupling regions with first helical springs extending approximately parallel to one another and a pair of first coupling regions with angled first helical springs are provided on a carrier element, with preferably the first coupling regions of the one pair of first coupling regions and the first coupling areas of the other pair of first coupling areas are arranged alternately one after the other in the circumferential direction, and/or wherein preferably the first coupling areas with first helical springs angled towards one another are arranged approximately one above the other in the vertical direction and the first coupling areas with helical springs extending approximately parallel to one another in the vertical direction approximately lie at the same level. In order to ensure that the first helical springs essentially do not have to transmit any forces acting in the direction of the roller axis of rotation, it is proposed that at least some, preferably all, of the first helical springs be arranged with spring longitudinal axes lying in at least one plane that is essentially orthogonal to the roller axis of rotation.

Um bei dieser Ausgestaltung eine axiale Zentrierung der Verdichterwalze zu gewährleisten, kann vorgesehen sein, dass das Trägerelement in wenigstens einem zweiten Kopplungsbereich über wenigstens eine zweite Schraubenfeder mit dem Maschinenrahmen gekoppelt ist, und dass eine Federlängsachse der wenigstens einen zweiten Schraubenfeder nicht in einer zur Walzendrehachse im Wesentlichen orthogonalen Ebene liegt, wobei vorzugsweise die Federlängsachse wenigstens einer, vorzugsweise aller zweiten Schraubenfedern sich im Wesentlichen in Richtung der Walzendrehachse erstreckt.In order to ensure axial centering of the compactor roller in this configuration, it can be provided that the carrier element is coupled to the machine frame in at least one second coupling region via at least one second coil spring, and that a spring longitudinal axis of the at least one second coil spring is not in an axis of rotation in the roller Substantially orthogonal plane is located, preferably the longitudinal axis of the spring of at least one, preferably all of the second coil springs extending substantially in the direction of the axis of rotation of the roller.

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 compactor 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 gemäß den Prinzipien der vorliegenden Erfindung aufgebauten Ausgestaltungsart einer Aufhängungsanordnung für die Verdichterwalze;
Fig. 4
die Verdichterwalze der Fig. 3 mit einer 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 nicht gemäß den Prinzipien der vorliegenden Erfindung aufgebauten 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 attached figures. It shows:
1
a compactor drum supported on a machine frame via a suspension arrangement not constructed in accordance with the principles of the present invention;
2
the compactor roller 1 showing a radial view of a suspension assembly not constructed in accordance with the principles of the present invention;
3
a compactor drum carried on a machine frame having a compactor drum suspension arrangement embodiment constructed in accordance with the principles of the present invention;
4
the compactor roller 3 showing an axial view of an associated suspension assembly constructed in accordance with the principles of the present invention;
figure 5
the compactor roller 3 with an associated suspension arrangement in radial view;
6
a compactor drum rotatably supported on a machine frame having a suspension arrangement not constructed in accordance with the principles of the present invention;
7
the compactor roller 6 with an associated suspension arrangement in axial view;
8
the compactor roller 6 with an associated suspension arrangement in radial view;
9
a side view of a soil compactor with a compactor roller carried on a machine frame.

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 9 a soil compactor, generally designated 10, is shown, which has a driver's cab 14 on a rear carriage 12 and wheels 16 that 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 pivotably connected to the rear carriage 12 about a substantially vertical axis for steering the soil compactor 10 comprises a machine frame 22 enclosing a compactor roller 20 with extending essentially in a direction of movement of the soil compactor 10 and between them the longitudinal frame sections 24 receiving the compactor roller 20. The compactor roller 20 is supported or suspended on these longitudinal frame sections 24 in its two axial end regions, axially here related to a roller axis of rotation about which the compactor roller 20 is rotatably supported on the machine frame 22, via suspension arrangements described in more detail below that the compactor roller 20 can perform a relative movement with respect to the machine frame 22. Such relative mobility enables vibration decoupling between the compactor roller 20 and the machine frame 22, which is of substantial importance in particular when on or in the compactor roller 20 an in 9 only schematically indicated device 26 is provided, with which a force or an acceleration can be exerted on the compactor roller 20 in order to accelerate it, for example, in the vertical direction V or in the circumferential direction about the roller axis of rotation. Such devices to be used for generating a vibration acceleration or vibration movement and/or an oscillation acceleration or oscillation movement of the compactor roller 20 are well known in the prior art and do not need to 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.The following are related to the Figures 2 to 8 various embodiments of suspension arrangements are described, with which the compactor roller 20 is carried or suspended on the machine frame 22 and which, due to the relative mobility made possible between the compactor roller 20 and the machine frame 22, provide vibration decoupling between the compactor roller 20 and the machine frame 22, so that in the area of the Vibrations generated by the compactor roller 20 are essentially not transmitted to the machine frame 22 and thus to the front end 18 and also to the rear end 22 . It should be pointed out here that the compactor roller 20 is preferably carried or suspended in its two axial end regions via suspension arrangements which are designed essentially identically to one another on the machine frame 20 . In principle, however, suspension arrangements that are designed differently from one another could also be used on the two axial end regions of the compactor roller 20 . Below is the Configuration of such suspension arrangements are each described with reference to a suspension arrangement provided on one of the two axial end regions of a compactor roller 20 .

Eine erste 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 first suspension arrangement for the compactor roller 20 is shown in FIGS Figures 1 and 2 shown. You can tell by the in 2 illustrated axial end region 30 of the compactor roller 20 that this has a roller axis of rotation A cylindrical and with a circular contour surrounding the roller shell 32. In the axial end region 30, a roller disk 34, also generally referred to as a blank, can be provided in the roller shell 32. A drive motor 36 can be carried on this roller disk 34, by means of which the compactor roller 20 can be driven to rotate about the axis of rotation A of the roller. This structure can be provided in particular when, unlike in 9 shown, the soil compactor 10 on the rear carriage also has a compactor roller and at least one of the compactor rollers is to be driven to rotate. If the soil compactor 10 has the in 9 illustrated drive wheels 16, it is not necessary to assign the compactor roller 20 itself its own traction motor. Nevertheless, the drive motor for the device 26 described above can then be provided on or in the compactor roller 20 in order 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 carrier unit, generally designated 38, on which the compactor roller 20 is rotatably supported about the roller axis of rotation A, for example via the traction motor 36 or a bearing element provided on the roller disk 34. The roller support unit 38 comprises a first support element 40 on which the compactor roller 20 is rotatably supported about the axis of rotation A of the roller.

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 also includes 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 parallel to the axis of rotation A of the roller. A carrier plate 46 can be provided on the machine frame 22 for this purpose or carried on which the second support member 42 is pivotally carried.

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 region 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 carrier plate 46, on which one of the two end areas of the coil spring 50 acts, while the other of the two end areas of the coil spring 50 acts on the second coupling area 48 of the second carrier element 42. You can see in the representation of the Figures 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 pivotably connected to the second carrier element 42 in a third coupling region 54 . The third coupling region 54 lies in a direction of longitudinal extension of the second carrier element 42 between the first coupling region 44 and the second coupling region 48 which are each provided on end regions of the second carrier 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 arranged essentially diametrically opposite the third coupling region 44 with respect to the roller axis of rotation A, a helical spring 58 engages with one of its end regions on the first carrier element 40 . The other end area of the helical spring 48 acts on a support area 60, for example also provided on the carrier plate 46 or on the machine frame 42, so that the first carrier element 40 and thus the compactor roller 20 is supported on the machine frame 22 via the helical 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 1 It can be seen that the first carrier element 40 extends approximately in the vertical direction V, so that the fourth coupling area 56 and also the roller axis of rotation are positioned in the vertical direction V above the third coupling area 54 . This means that even under the action of gravity, there is no significant pivoting of the first carrier element 40 with respect to the second support member 42 causing tilting moment arises. Rather, due to the fact that the machine frame 22 hangs on the compactor roller 20 via the two carrier elements 40, 42 coupled to one another, the roller carrier unit 38 assumes a state in which the two carrier elements 40, 42 are in a state of minimum potential energy with respect to one another Relative pivot position are.

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.Due to the articulated design of the roller carrier unit 38, the compactor roller 20 can perform a relative movement with respect to the machine frame 22 essentially in the vertical direction V when the helical spring 50 is compressed or stretched, while the compactor roller 20 is essentially moved with respect to the machine frame 22 when the helical spring 58 is compressed or stretched can perform a movement in the horizontal direction H. It should be noted in this context that the horizontal direction H can be understood as a direction which is essentially parallel to the subsoil U to be compacted, while the vertical direction V can be understood as a direction which is essentially orthogonal to the subsoil 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 a relative movement of the compactor roller 20 in any desired direction, essentially orthogonal to the roller axis of rotation A, while compressing or stretching the two coil springs 50, 58, while in the direction of the roller axis of rotation A, the roller carrier unit 38 defines the compactor roller 20 with respect to the Machine frame 22 is supported. This ensures that transverse forces, ie forces acting in the direction of the roller axis of rotation A, can also be transmitted between the compactor roller 20 and the machine frame 22, which can occur in particular when the soil compactor 10 is steered.

Eine erfindungsgemäße Ausgestaltungsart einer 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.An inventive embodiment of a suspension assembly is in the Figures 3 to 5 shown. In the Figures 3 to 5 are components or assemblies which components or assemblies described above with regard to structure or function are denoted by the same reference numerals with the addition of the suffix "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 supports the compactor roller 20a so as to be rotatable about the roller axis of rotation A and has a carrier element 64a which is designed essentially in the shape of a cross. Starting from a central body section 66a rotatably supporting the compactor 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 axis of rotation A of the roller. A first coupling area 76a, 78a, 80a, 82a is formed in each of the end areas of the coupling arms 68a, 70a, 72a, 74a remote from the roller axis of rotation A. In each of the first coupling regions 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 tell from the Figures 4 and 5 that the two coil springs 84a, 86a, via which the first coupling region 76a positioned at the very top in the vertical direction is coupled to the machine frame 22a, are arranged with spring longitudinal axes F angled towards one another, which also applies equally to the first one positioned furthest below in the vertical direction Coupling area 80a on the machine frame 22a coupling coil springs 84a, 86a.

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 regions 78a, 82a arranged centrally in the vertical direction V, i.e. essentially at the same height as the roller axis of rotation A, the helical springs 84a, 86a that couple them to the machine frame 22a have spring longitudinal axes F that are essentially parallel to one another and thus essentially to one another as well progressively arranged. The positioning of the helical springs 84a, 86a, which interact in particular with the first coupling regions 76a, 80a, obliquely with respect to the horizontal direction H makes it possible to transmit a drive torque with great leverage between the compactor roller 20a and the machine frame 22a. About the essentially in the vertical direction V Oriented coil springs 84a, 86a, via which the first coupling regions 70a or 74a are supported with respect to the machine frame 22a, forces acting in the vertical direction V can be transmitted efficiently.

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 Figures 3 to 5 it can be seen that all the coil springs 84a, 86a coupling the first coupling regions 76a, 78a, 80a, 82a to the machine frame 22a or the carrier plate 46a, which are to be interpreted as first coil springs within the meaning of the present invention, with their spring longitudinal axes F in a common are arranged in a plane orthogonal to the axis of rotation A of the roller, which, for example, corresponds to the plane of the drawing in 4 can match. The end regions of these first coil springs 84a, 86a, with which they are connected to the first coupling regions 76a, 78a, 80a, 82a, and the end regions of these first coil springs 84a, 86a, with which they are connected to respective support regions 88a of the machine frame or the carrier plate 46a are connected, thus have in the direction of the roller axis of rotation A essentially no offset to each other.

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 helical springs 84a, 86a are thus essentially provided and suitable for supporting the compactor roller 20a with respect to the machine frame 22a in the event of deflections perpendicular to the axis of rotation A of the roller. 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 via second coil springs 92a to the machine frame 22a, for example the carrier plate 46a, and is thus supported in the axial direction is. The second helical 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 roller. For example, four such second coil springs 92a can be provided with a uniform circumferential spacing 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 regions 76a, 78a, 80a, 82a and on the machine frame 22a or sections 87a and 89a overlapping one another in the direction of the roller axis of rotation A can be provided on the carrier plate 46a.

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.Also with the in the Figures 3 to 5 In the embodiment shown, the compactor roller 20a is supported by the first coil springs 84a, 86a essentially for a movement perpendicular to the roller axis of rotation A with respect to the machine frame 22a and can therefore 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, for example the steering forces, takes place essentially via the second helical springs 92a. In an alternative embodiment, instead of the second helical springs, one or more coupling rods can be provided, which extend, for example, essentially in the direction of the roller axis of rotation A and are supported on the carrier plate 46a on the one hand and the carrier element 64a on the other, with such coupling rods being elastic in at least one of their end regions are supported, for example via a rubber bearing, in order to allow movement of the compactor roller 20a in the direction of the axis of rotation A of the roller.

Eine weitere 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.Another suspension arrangement is in the Figures 6 to 8 shown. In these figures, components which correspond to the components described above in terms of structure or function are denoted by the same reference numerals with the addition of a "b" suffix.

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.At the in the Figures 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 and have the first coupling regions 76b, 80b provided thereon. Each of these two first coupling regions 76b, 80b is again coupled via two coil springs 84b, 86b to the machine frame 22b or to a support plate 46b provided thereon. Unlike the one in the Figures 3 to 5 shown embodiment, are the first coil springs 84b, 86b with their respective longitudinal spring axes F not in a plane that is essentially orthogonal to the axis of rotation A of the roller. Here the first coupling areas 76b, 80b and the support areas 88a, in which the coil springs 84b, 86b act on the carrier plate 46b or on the machine frame 22b, are offset from one another not only in the circumferential direction about the roller axis of rotation A, but also in the direction of the roller axis of rotation 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 compactor roller 20b is not only supported on the machine frame 22b via the first coil springs 84b, 86b so that it can move in a direction perpendicular to the roller axis of rotation A, but is also supported or centered with respect to it in the direction of the roller axis of rotation A, particularly if on both axial End regions of the compactor roller 22b are used to each other essentially identically constructed suspension arrangements 28b for the suspension of the compactor roller 20b on the machine frame 22b. It can thus in this embodiment on the in the embodiment of Figures 3 to 5 used, essentially in the direction of the roller axis of rotation A extending second coil springs are dispensed with. This simplifies the construction of a respective suspension arrangement 28b substantially, since only 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 regions 76b, 80b are arranged in the vertical direction V above or below the roller axis of rotation A, ie the two coupling arms 68b, 72b extend essentially in the vertical direction V. The coil springs 84b, 86b interacting with these two first coupling regions 76b, 80b can thus be used to efficiently transmit forces acting in the vertical direction in particular, it being assumed that due to the weight of the soil compactor 10, these forces acting and having to be supported in the vertical direction will be significantly greater. than the forces acting in the horizontal direction H during compaction operation. 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 compactor roller 20b to the machine frame 22b, so that periodic movements occur in the region of the compactor roller 22b or accelerations are essentially not transmitted 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 compactor roller use the advantage that the use of coil springs as the elastic elements transmitting the suspension forces achieves excellent vibration decoupling between the compactor roller and the machine frame that rotatably supports it, but that there is a significant damping effect through the absorption of energy in the elastically deformable elements does not occur. The energy provided in the area of the compactor roller, with which it is to be set into a periodic movement, for example a vibratory movement or vibration acceleration directed essentially in the vertical direction V or an oscillating movement or oscillation acceleration directed essentially in the circumferential direction, can be used essentially completely for the Generation of this movement are used.

Claims (5)

  1. Soil compactor comprising at least one compactor roller (20a) supported on a machine chassis for rotation about a roller axis of rotation (A), wherein at least one compactor roller (20a) is supported in its two axial end regions (30a) on the machine chassis (22a) for movement relative thereto via a respective suspension assembly (28a), wherein at least one suspension assembly (28a) comprises at least one helical spring (84a, 86a, 92a) movably coupling the compactor roller (20a) to the machine chassis, wherein
    - the at least one suspension assembly (28a) comprises a roller carrier assembly (38a), wherein the compactor roller (20a) is supported on the roller carrier assembly (38a) rotatable about the roller axis of rotation (A),
    - the roller carrier assembly (38a) is coupled to the machine chassis (22a) via at least one helical spring (84a, 86a, 92a),
    - the roller carrier assembly (38a) comprises a carrier element (64a) rotatably supporting the compactor roller (20a) about the roller axis of rotation (A), and the carrier element (64a) is coupled to the machine chassis (22a) in a plurality of first coupling areas (76a, 78a, 80a, 82a) arranged at a circumferential distance from one another about the roller axis of rotation (A), in each case via at least one helical spring (84a, 86a),
    - at least one pair of first coupling areas (76a, 78a, 80a, 82a) diametrically opposite one another with respect to the roller axis of rotation (A) is provided on the carrier element (64a), and in at least one first coupling area (76a, 78a, 80a, 82a) the carrier element (64a) is coupled to the machine chassis (22a) via at least two first helical springs (84a, 86a),
    - in the case of at least one pair of first coupling areas (78a, 82a), on each of the two first coupling areas (78a, 80a) two first helical springs (84a, 86a) extend approximately parallel to one another and in opposite directions starting from a respective first coupling area (78a, 82a),
    characterized in that in at least one further pair of first coupling areas (76a, 80a) on each of the two first coupling areas (76a, 80a), two first coil springs (84a, 86a) extend at an angle to each other and in opposite directions starting from a respective first coupling area (76a, 80a).
  2. Soil compactor according to claim 1,
    characterized in that a plurality of first coupling areas (76a, 78a, 80a, 82a) following one another in the circumferential direction about the roller axis of rotation (A) are provided on the carrier element (64a), and in that in each first coupling area (76a, 78a, 80a, 82a) the carrier element (64a) is coupled to the machine chassis (22a) via at least two first helical springs (84a, 86a).
  3. Soil compactor according to claim 1 or 2,
    characterized in that on a carrier element (64a) a pair of first coupling areas (78a, 82a) with first coil springs (84a, 86a) extending approximately parallel to each other and a pair of first coupling areas (76a, 80a) with first helical springs (84a, 86a) angled towards each other are provided, wherein preferably the first coupling areas (78a, 82a) of one pair of first coupling areas (78a, 82a) and the first coupling areas (76a, 80a) of the other pair of first coupling areas (76a, 80a) are arranged alternately one after the other in the circumferential direction, and/or wherein preferably the first coupling areas (76a, 80a) with first helical springs (84a, 86a) angled with respect to one another are arranged approximately one above the other in the vertical direction and the first coupling areas (78a, 82a) with helical springs (84a, 86a) extending approximately parallel to one another lie approximately at the same height in the vertical direction (V).
  4. Soil compactor according to any one of claims 1-3,
    characterized in that at least part of, preferably all of, the first helical springs (84a, 86a) are arranged with longitudinal spring axes (F) lying in at least one plane substantially orthogonal to the roller axis of rotation (A), preferably wherein the carrier element is coupled to the machine chassis (22a) in at least a second coupling area (90a) via at least a second helical spring (92a) and a longitudinal spring axis (F) of the at least one second helical spring (92a) does not lie in a plane substantially orthogonal to the roller axis of rotation (A), wherein preferably the longitudinal spring axis (F) of at least one, preferably all, second helical springs (92a) extends substantially in the direction of the roller axis of rotation (A).
  5. Soil compactor according to one of the preceding claims,
    characterized in that a device for generating a substantially periodic acceleration, preferably oscillation acceleration or/and vibration acceleration, is provided in the compactor roller (20a).
EP20176432.1A 2017-01-30 2018-01-25 Soil compactor Active EP3722506B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017101685.6A DE102017101685A1 (en) 2017-01-30 2017-01-30 compactor
EP18153430.6A EP3354796B1 (en) 2017-01-30 2018-01-25 Soil compactor
EP19161464.3A EP3517683B1 (en) 2017-01-30 2018-01-25 Soil compactor

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP19161464.3A Division EP3517683B1 (en) 2017-01-30 2018-01-25 Soil compactor
EP19161464.3A Division-Into EP3517683B1 (en) 2017-01-30 2018-01-25 Soil compactor
EP18153430.6A Division EP3354796B1 (en) 2017-01-30 2018-01-25 Soil compactor

Publications (2)

Publication Number Publication Date
EP3722506A1 EP3722506A1 (en) 2020-10-14
EP3722506B1 true EP3722506B1 (en) 2022-05-18

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ID=61027556

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EP18153430.6A Active EP3354796B1 (en) 2017-01-30 2018-01-25 Soil compactor
EP20176432.1A Active EP3722506B1 (en) 2017-01-30 2018-01-25 Soil compactor
EP19161464.3A Active EP3517683B1 (en) 2017-01-30 2018-01-25 Soil compactor

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EP18153430.6A Active EP3354796B1 (en) 2017-01-30 2018-01-25 Soil compactor

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EP19161464.3A Active EP3517683B1 (en) 2017-01-30 2018-01-25 Soil compactor

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US (1) US10538885B2 (en)
EP (3) EP3354796B1 (en)
JP (2) JP6511549B2 (en)
CN (3) CN111877098B (en)
DE (1) DE102017101685A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3445913B1 (en) * 2016-04-21 2019-10-16 Volvo Construction Equipment AB Compacting drum comprising an eccentric assembly for oscillating the compacting drum of a compacting machine
DE102017101685A1 (en) * 2017-01-30 2018-08-02 Hamm Ag compactor
CN111364324B (en) * 2020-04-16 2024-04-12 无锡城市职业技术学院 Road roller
CN112064459A (en) * 2020-09-11 2020-12-11 费鑫杰 Vibratory roller capable of adjusting weight of roller for road surface and use method

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US2701616A (en) * 1950-02-10 1955-02-08 Gabb Mfg Company Surface roller and motor platform mounting thereon
DE884373C (en) 1951-09-04 1953-07-27 Carl Kaelble Motor road roller
US3026781A (en) 1956-06-01 1962-03-27 Scheid Maschinenfabrik Gmbh Road roller
US3052166A (en) 1959-05-14 1962-09-04 Lawrence O Thrun Vibrating compaction roller
JPS4734171Y1 (en) 1969-04-07 1972-10-16
US3923412A (en) * 1970-09-23 1975-12-02 Albert Linz Drive means for vehicle mounted vibratory compactor
DE2231023A1 (en) * 1972-06-24 1974-01-10 Bopparder Maschinenbau Gmbh VIBRATION COMPRESSOR
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CN202658514U (en) * 2012-04-09 2013-01-09 长葛市津中建机械有限公司 Vibratory roller
CN104989758B (en) * 2015-07-14 2016-10-05 安徽江淮汽车股份有限公司 Helical spring, independent suspension assembly and automobile for automotive suspension
CN205529813U (en) * 2016-01-25 2016-08-31 长安大学 Phase place of being applied to stepless amplitude modulation device of vibrated roller keeps ware
CN205893877U (en) * 2016-07-26 2017-01-18 常州凯得利机械有限公司 Compaction wheel automatic compensating device
DE102017101685A1 (en) * 2017-01-30 2018-08-02 Hamm Ag compactor

Also Published As

Publication number Publication date
EP3354796A1 (en) 2018-08-01
JP6511549B2 (en) 2019-05-15
US10538885B2 (en) 2020-01-21
CN108374306B (en) 2020-10-23
EP3517683A1 (en) 2019-07-31
CN111877098A (en) 2020-11-03
EP3722506A1 (en) 2020-10-14
JP2019090323A (en) 2019-06-13
EP3354796B1 (en) 2020-04-08
JP2018127881A (en) 2018-08-16
EP3517683B1 (en) 2020-07-15
CN108374306A (en) 2018-08-07
JP6686196B2 (en) 2020-04-22
CN208088065U (en) 2018-11-13
DE102017101685A1 (en) 2018-08-02
CN111877098B (en) 2022-05-31
US20180216300A1 (en) 2018-08-02

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