EP3926096B1 - Soil compacting device for compacting a subgrade layer, asphalt roller and method of operating a soil compacting device - Google Patents
Soil compacting device for compacting a subgrade layer, asphalt roller and method of operating a soil compacting device Download PDFInfo
- Publication number
- EP3926096B1 EP3926096B1 EP21177503.6A EP21177503A EP3926096B1 EP 3926096 B1 EP3926096 B1 EP 3926096B1 EP 21177503 A EP21177503 A EP 21177503A EP 3926096 B1 EP3926096 B1 EP 3926096B1
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- EP
- European Patent Office
- Prior art keywords
- roller
- edge processing
- guide surface
- deflector
- adjustment
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010426 asphalt Substances 0.000 title claims description 30
- 238000000034 method Methods 0.000 title claims description 16
- 239000002689 soil Substances 0.000 title description 45
- 238000012545 processing Methods 0.000 claims description 199
- 239000000463 material Substances 0.000 claims description 151
- 238000005056 compaction Methods 0.000 claims description 53
- 230000005484 gravity Effects 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 45
- 238000007688 edging Methods 0.000 description 25
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Images
Classifications
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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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
- E01C23/0913—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with non-powered tools, e.g. trailed router blade
- E01C23/092—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with non-powered tools, e.g. trailed router blade rotary, e.g. edge trimmer disc
-
- 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
- E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
- E01C19/266—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles fitted to vehicles, road-construction or earth-moving machinery, e.g. auxiliary roll readily movable to operative position ; provided with means for facilitating transport; Means for transporting rollers; Arrangements or attachments for converting vehicles into rollers, e.g. rolling sleeves for wheels
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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
-
- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
-
- 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
- E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
- E01C19/264—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles with attachments for work other than rolling, e.g. grading, scarifying
-
- 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
- E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
- E01C19/268—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles designed for rolling surfaces not situated in the plane of the riding surface of the apparatus, e.g. stepped-down surfaces, sloping edge of surfacing
Definitions
- the invention relates to a soil compacting device for compacting a subsurface layer, an asphalt roller and a method for operating a soil compacting device.
- Soil compaction devices are often used for compacting a layer of subsurface material, such as a layer of asphalt, in road construction or similar applications. What these soil compacting devices have in common is that they comprise a compacting roller mounted on a support structure of the soil compacting device so as to be rotatable about a horizontal travel axis of rotation running transversely to a working direction. This has a cylindrical outer surface that rolls on the ground during compaction operation.
- a compacting roller can be, for example, a rubber wheel on rubber-wheeled rollers or what is known as a bandage, for example made of a steel material and/or a composite material.
- the latter typically includes a hollow-cylindrical drum casing, the often smooth outer surface of which is used for soil compaction.
- soil compaction devices of this type In road construction in particular, it is common for soil compaction devices of this type to follow a road finisher for post-compaction and further post-processing of the laid asphalt mat.
- these are self-propelled soil compaction devices, often with two or more such compaction rollers, in the form of rollers, in particular pivot or articulated tandem rollers.
- Generic rollers are, for example, in the publications DE 10 2018 007825 A1 and DE 10 2017 011 146 A1 disclosed.
- Post-processing processes that go beyond the pure compaction process include, for example, the spreading of chippings to increase the grip of the road surface or the Defined shaping of the edge areas of the asphalt layer laid by the road finisher driving ahead.
- the present invention relates to the post-processing of the edge areas of the laid asphalt mat using a covering edge processing device arranged on the supporting structure.
- Such covering edge processing devices serve to achieve a shaping and/or cutting processing of the marginal edge of the asphalt mat when the asphalt mat is passed through by the soil compacting device.
- so-called edge cutters and edge pressing devices can be distinguished here, which, however, both have a basic structure that is quite comparable to one another.
- Essential elements of such a covering edge processing device are an edge processing roller, which is usually not driven, an adjustable roller holding device, in particular an adjustment arm, and an adjustment drive.
- the diameter of the edge processing roller is usually designed to be significantly smaller than the diameter of the compression roller.
- the edge processing roller also protrudes in the direction of the travel axis of rotation at least partially beyond the front side of the compaction roller (bandage) in order to be able to cut and/or press down the soil next to the compaction roller, in particular directly adjacent to it in the direction of the travel axis of rotation .
- the edge processing roller on the adjustable roller holding device can be adjusted between a passive position or a transport position without contact with the ground and the edge processing position relative to the outer lateral surface of the compaction roller.
- the passive position refers to a position in which the edge processing roller does not protrude in the radial direction to the travel axis of rotation of the compaction roller in relation to the vertex of the lower vertex of the cross section of the compaction roller and is therefore usually not in contact with the subsurface layer.
- the edge processing position refers to an adjustment position of the edge processing roller, in which it is positioned at least flush with the lower vertex of the compaction roller in the vertical direction or, preferably, projects to a defined extent in the vertical direction downwards even beyond the outer lateral surface of the compaction roller, in particular with regard to the lower apex of the outer surface of the compaction roller.
- edge processing position is variable within a defined range, for example in order to allow adaptation measures to the respective thickness of the underground covering layer.
- the edge-processing roller In the edge-processing position, the edge-processing roller thus cuts into the sub-floor covering layer and/or presses it in the lateral area in order to obtain a straight and evenly shaped sub-floor covering layer edge.
- the base edge processing roller is preferably adjustably mounted on the roller holding device, in particular an adjustment arm, with the aid of an adjustment drive.
- an adjusting drive can be a hydraulic cylinder-piston unit, for example.
- covering edge processing devices are for example in DE 10 2016 203 321 A1 , the DE 20 2014 010 215 U1 , the DE 91 11 398 U1 , the DE 1 939 680 U1 , the DE 30 20 796 A1 , the DE 29 27 883 A1 as well as the DE 87 10 179 U1 described.
- base edging devices Users of such base edging devices sometimes add a plow-like clippings deflector to factory-available base edging devices with at least one material guide surface, which is intended to push away base clippings that occur during operation of the base edging device when passing the subsurface layer from the subsurface layer in the direction of the travel axis of rotation.
- a clippings deflector With the aid of such a clippings deflector, the subsurface material cut from the subsurface layer should thus be pushed aside from the subsurface layer in order to reduce post-processing measures on the one hand and to facilitate collection of the clippings cut off on the other.
- Such a clippings deflector is, for example, in DE 91 11 398 U1 described.
- the invention thus consists in specifying a soil compacting device of the generic type with a clippings deflector which, compared to the known solutions, enables easier operation, in particular with regard to adjustment to different subsurface layer thicknesses.
- a soil compaction device of the present generic type for compacting a subsurface layer has at least one compaction roller, which is mounted on a support structure of the soil compaction device so as to be rotatable about a horizontal axis of rotation running transversely to a working direction and which comprises a cylindrical outer jacket surface that rolls on the soil subsoil during compaction operation.
- the soil compaction device makes contact with the soil substrate to be compacted via the rolling movement. This can be done statically or also dynamically with the help of known vibration exciters.
- the soil compacting device comprises a covering edge processing device arranged on the support structure. The covering edge processing device serves to process the covering edge as the subsurface covering layer passes through the soil compacting device, for example to cut and/or press on.
- the covering edge processing device comprises, in a manner known per se, an edge processing roller, an adjustable roller holding device, in particular an adjusting arm, and an adjusting drive, the edge processing roller being mounted on the adjustable roller holding device so that it can rotate about a roller axis of rotation.
- the edge processing roller is usually not driven and is freely rotatably arranged on the roller holding device. It can have a central bearing axis as well as a machining surface running around the bearing axis, in particular running obliquely in the radial direction.
- the adjustable roller holding device is designed in such a way that it is mounted on the support structure together with the edge processing roller from a passive position into an edge processing position relative to the outer lateral surface of the compression roller, driven by the adjustment drive.
- the adjustable roll holding device can in particular be an adjusting arm and/or adjusting lever, which is adjustable on one side and is mounted on the supporting structure relative to the supporting structure and has a bearing for the edge processing roll at a distance from this bearing point.
- the type of adjustment movement can vary between the passive position and the edge processing position.
- the adjustment arm can be pivoted relative to the support structure about a pivot axis between the passive position and an edge processing position.
- the pivoting axis can in particular run parallel to the travel axis of rotation of the compaction roller.
- the cuttings deflector comprises at least one material guiding surface, which is provided for covering clippings occurring during operation of the covering edge processing device when passing through the underground covering layer to be pushed away from the sub-surface layer in the direction of the axis of rotation of the vehicle.
- the material guiding surface is thus functionally comparable to a plow element and thus comprises a surface running at least partially obliquely to the travel axis of rotation, which pushes the clippings aside from the edge of the subsurface layer in the working direction when passing through the soil compacting device.
- the clippings deflector is not positioned statically fixed or only manually adjustable on, for example, the support structure of the soil compacting device, but is mounted on the covering edge processing device with the aid of a bearing device. Functionally, an adjustment of the covering edge processing device relative to the supporting structure thus also causes a change in the relative position of the clippings deflector relative to the supporting structure.
- the bearing device of the clippings deflector on the base edge processing device is designed in addition to a fixed bearing in such a way that the relative position of the clippings deflector or the at least one material guide surface of the clippings deflector to the base edge processing device and in particular to the roller holding device can be changed, in particular automatically.
- the relative position of the clippings deflector is adjusted in particular in such a way that the side of the clippings deflector and in particular the material guide surface facing the ground is at the same height, for example in the same horizontal plane, as the lower apex of the edge processing roller when the edge processing roller is in the edge processing position.
- the lower apex of the edge processing roller is understood to be the vertically lowest point of the edge processing roller.
- This position of the clippings deflector or the material guide surface is also referred to as the material guide position.
- the bearing device for bearing the cuttings deflector is designed in such a way that it adjusts the relative position of the at least one material guide surface relative to the adjustable roller holding device depending on the setting position of the adjustable roller holding device in relation to the supporting structure.
- This embodiment can thus comprise a coupling means which, in the manner of operation of a gear, converts the position of the roller holding device into an adjustment movement of the material guide surface of the clippings deflector relative to the roll holding device.
- the adjustment movement of the material guide surface of the clippings deflector relative to the roll holding device is preferably positively coupled.
- suitable guide gears can be used, for example, which enable a corresponding positive coupling of the bearing device of the clippings deflector and the adjustable roller holding device, for example by forming a link gear or the like.
- the bearing device is designed in such a way that it adjusts the relative position of the at least one material guide surface in relation to the adjustable roller holding device as a function of gravity or as a function of weight.
- the bearing device of the clippings deflector is mounted on the covering edge processing device in such a way that the weight of the clippings deflector is sufficient to vertically lower the clippings deflector and in particular the material guide surface until the clippings deflector and in particular the material guide surface rest on the ground.
- a torsionally flexible mounting can be provided between the clippings deflector and the covering edge processing device.
- the clippings deflector or the material guide surface is thus carried along floating on the ground.
- the subsoil can be, for example, a covering layer or the subsoil or soil present under the covering layer.
- it is an asphalt layer and/or the subsoil beneath the asphalt layer. This embodiment is particularly easy and inexpensive to manufacture.
- the bearing device is designed in such a way that it adjusts the relative position of the at least one material guide surface in relation to the adjustable roller holding device through interaction with the ground.
- the clippings deflector or the material guide surface is pressed vertically upwards against its own weight by contact with the ground.
- the bearing device is then specially designed in such a way that it permits and thus enables movements of the clippings deflector or the material guide surface that are induced by contact with the ground.
- the clippings deflector can be arranged as an additional component on the support structure of the soil compacting device or on the machine frame of a soil compacting machine, for example an asphalt roller, having the soil compacting device.
- the clippings deflector is adjustably mounted directly on the covering edge processing device.
- the clippings deflector can therefore be regarded as part of the covering edge processing device.
- the clippings deflector moves together with the covering edge processing device when its position is adjusted, for example in relation to the supporting structure.
- the relative position of the cuttings deflector or the material guide surface relative to the adjustable roller holding device of the covering edge processing device is changed automatically.
- Such a coupling of the movement sequences is particularly easy if the clippings deflector is adjustably mounted directly on the covering edge processing device and is therefore moved along with it.
- the bearing device of the clippings deflector has a bearing arm.
- the bearing arm is connected to the covering edge processing device.
- the bearing arm also carries the material guide surface.
- the bearing arm is preferably designed to be rotatable about an adjustment axis relative to the adjustable roll holding device of the edge processing device.
- the bearing arm is therefore designed as a swivel arm which can be swiveled about its connection point on the covering edge processing device.
- the material guide surface can thus also be pivoted about the connection point of the bearing arm on the covering edge processing device.
- the bearing arm is designed to be displaceable, in particular linearly, along an adjusting curve relative to the adjustable roller holding device of the edge processing device.
- the corresponding adjustment curve of the bearing arm is realized, for example, by a slotted guide.
- the frame containing the connecting link guide can be fastened to the covering edge processing device, for example.
- the pivotable bearing arm of the bearing device can be pivoted at any point of the covering edge processing device.
- a particularly simple and reliable setting of a desired relative position of the material guide surface to the edge processing roller or to the roller holding device is achieved according to a preferred embodiment in that the bearing arm of the bearing device of the cut material deflector can be rotated coaxially to the roller axis of rotation of the edge processing roller relative to the adjustable roller holding device is stored.
- the connection point of the bearing arm to the covering edging device is therefore selected such that the adjustment axis about which the bearing arm can be pivoted is identical to the roller axis of rotation about which the edging roller is rotatably mounted during operation. In this way, it is ensured in a simple manner that the material guide surface is at the same distance from the edge processing roller in every working position, and therefore optimum work results can always be achieved.
- the edge processing roller is arranged in front of the bearing device, in particular the bearing arm, as seen from the outside of the machine along the axis of rotation of the roller.
- the edge processing roller is arranged further outside on the machine, transversely to the working direction, than the bearing device.
- the material guide surface on the other hand, also projects outwards beyond the edge processing roller. In this way it is ensured that clippings cut off by the edge processing roller are actually caught by the material guide surface and moved away from the sub-floor covering layer.
- the bearing device in particular the bearing arm, is arranged along the axis of rotation of the roller exclusively behind the edge processing roller.
- a particularly space-saving, preferred embodiment provides that the elements edge processing roller, bearing device, in particular bearing arm of the bearing device, and adjustable roller holding devices of the covering edge processing device follow one another viewed from the outside of the machine along the axis of rotation of the roller.
- the bearing device in particular the bearing arm of the bearing device, is arranged at least partially between the edge processing roller and the adjustable roller holding device of the covering edge processing device, viewed in the direction of the roller axis of rotation.
- the axis of rotation of the roller runs transversely to the working direction.
- the corresponding arrangement ensures that the bearing arm can be made particularly short, and the material guide surface is nevertheless arranged in the immediate vicinity of the edge processing roller, which enables reliable operation.
- a further preferred embodiment of the invention alternatively provides that the bearing device, in particular the bearing arm of the bearing device, is arranged on the side of the edge processing roller facing away from the compacting roller, viewed in the direction of the roller axis of rotation.
- the bearing device in particular the bearing arm, is in front of the edge processing roller as seen from the outside of the machine along the axis of rotation of the roller arranged.
- the bearing device is therefore arranged further outside on the machine, transversely to the working direction, than the edge processing roller.
- the material guiding surface protrudes outwards both over the edge processing roller and over the bearing device.
- the elements of the bearing device in particular the bearing arm of the bearing device, edge processing roller and adjustable roller holding device of the covering edge processing device, follow one another.
- the edge processing roll lies between the bearing device, in particular the bearing arm of the bearing device, and the adjustable roll holding device.
- the bearing arm in this embodiment is arranged or mounted on a bearing shaft that is passed through the edge processing roller on the side of the edge processing roller that faces away from the compaction roller. This results in a particularly simple structure that keeps production costs low.
- the edging roller is rotatably attached to the covering edging device and in particular to the roller holding device.
- the non-driven edge processing roller rolls through contact with the ground and rotates around a roller axis of rotation formed by a bearing shaft.
- the bearing device in particular the bearing arm of the bearing device, is mounted on the covering edge processing device in such a way that it encircles a bearing shaft of the edge processing roller, in particular in the radial direction to the roller axis of rotation.
- the bearing device or the bearing arm thus surrounds the bearing shaft of the edge processing roller, preferably completely, which contributes to a reliable attachment of the cut material deflector.
- the bearing device can keep the clippings deflector and in particular the material guide surface floating on the ground, for example due to its gravity.
- vibrations or unevenness can cause the material guide surface to jump on the floor and therefore partially miss the clippings.
- the bearing device has a means, in particular at least partially acting downwards in the vertical direction, for applying a positioning force to the clippings deflector and in particular to the material guide surface.
- the means for applying the actuating force thus actively presses the clippings deflector and in particular the material guide surface vertically downwards onto the ground.
- the clippings deflector and in particular the material guiding surface are therefore pretensioned in the direction vertically downwards or towards the ground.
- the material guide surface of the clippings deflector therefore also runs Unevenness in the ground or vibrations of the machine always close to the ground and therefore conveys the clippings particularly reliably away from the subsurface layer to the outside.
- it can have a roller or a skid, which is arranged on the material guide surface in such a way that it contacts the ground and, in particular, is also pressed onto the ground by the means for applying the actuating force, and at the same time the material guide surface slightly, for example by a few millimeters, keeps spaced from the ground.
- the means for applying the actuating force to the clippings deflector can fundamentally be designed differently, as long as the clippings deflector and in particular the material guide surface are pressed vertically downwards or onto the ground.
- the means for applying the actuating force is arranged between the bearing arm and the adjustable roller holding device.
- the means for applying the actuating force can be arranged between the bearing device or the bearing arm and a bearing shaft which is arranged on the adjustable roll holding device and penetrates the edge processing roll, in particular along the roll axis of rotation. In other words, the bearing shaft is guided through the edge processing roller onto the side of the edge processing roller that faces away from the compression roller.
- the means for applying the actuating force therefore uses, for example, the adjustable roller holding device as a counter bearing and, starting from this, pushes or pulls the bearing arm of the bearing device of the clippings deflector vertically downwards.
- the actuating force applied to the bearing arm therefore causes the bearing arm to rotate about the adjustment axis, which leads to a lowering of the material guide surface until it rests on the ground.
- the means for applying the actuating force can also comprise an elastic actuating element.
- the means for applying the actuating force is a spiral spring, a torsion spring or a gas pressure spring. These can be arranged in a particularly simple manner between the adjustable roll holding device and the bearing arm and can apply a corresponding force to the bearing arm. In addition, such springs are particularly cheap and reliable.
- the material guide surface or the clippings deflector can always be adjusted so far that the material guide surface rests with its lower side on the ground and is carried along in a floating manner on it.
- this can lead to increased wear on the material guide surface.
- An advantageous further development of the invention therefore provides that an adjustment path limiting device is present, which limits the adjustment path of the clippings deflector relative to the edge processing roller and/or relative to the compaction roller.
- This can be, for example, a stop that positively limits the movement of the clippings deflector and/or the material guide surface, or similar elements.
- the adjustment path limiting device can be arranged, for example, on the roller holding device.
- the adjustment path limiting device can, for example, also be an elongated hole into which the bearing device, in particular the bearing arm, protrudes at least partially.
- a projection can be provided on the bearing device, which is guided in the slot. The mechanical stop can then be formed, for example, by the end of the elongated hole.
- the material guide position of the material guide surface is designed or selected in such a way that the clippings deflector remains out of contact with the ground during operation.
- the adjustment path limiting device can be designed in such a way that the clippings deflector and in particular the material guide surface are spaced apart from the ground in the material guide position. The material guide surface is therefore guided floating above the ground and is therefore exposed to significantly less wear.
- the bearing arm or the bearing device is arranged further outwards along the roller axis of rotation than the edge processing roller itself.
- the bearing arm or the bearing device can also be arranged at a distance from the edge processing roller along the roller axis of rotation.
- the material guide surface should start as flush as possible with the edge processing roller and project outwards in the direction of the roller axis of rotation beyond the bearing device.
- the material guide surface extends along the roller axis of rotation away from the bearing device, in particular the bearing arm of the bearing device, on both sides, in particular towards and away from the edge processing roller.
- the material guide surface extends along the axis of rotation of the roller in both directions, both towards the edge processing roller and away from it and away from the center of the machine.
- the material guide surface thus extends along the axis of rotation of the roller from the edge processing roller to the bearing device and protrudes beyond this to the outside of the machine. In this way, even with a The storage device arranged outside of the edge processing roller ensures that the cuttings are reliably removed from the remaining edge by the material guide surface.
- the bearing device and in particular the bearing arm can alternatively be arranged preferably behind the edge processing roller, viewed from the outside, along the axis of rotation of the roller.
- the bearing device between the bearing arm and the material guide surface has a width bridging piece extending in a direction parallel to the axis of rotation of the roller, the extent of which in the direction of the axis of rotation of the roller is in the Area corresponds to 80% to 120% of the axial extent of the edge processing roller in the direction of the roller axis of rotation.
- the extent of the width bridging piece along the axis of rotation of the roller thus corresponds, for example, to 80%, 90%, 100%, 110% or 120% of the thickness of the edge processing roller.
- the thickness of the edging roll is also defined in the direction of the roll axis of rotation.
- the width bridging piece is preferably arranged between the bearing arm and the material guide surface and spaces them from one another. In this way, the bearing arm can be arranged behind the edging roller in a space-saving manner, as seen from the outside, and still carry the material guide surface, which projects outwards over the edging roller.
- the clippings are conveyed away from the underground covering layer by the material guiding surface according to the invention.
- the clippings then lie on the ground at a distance from the sub-surface layer, so that the clippings can be collected by a wheel loader, for example, without the risk of the wheel loader damaging the sub-surface layer with its shovel. Nevertheless, an additional work step and an additional machine are required to collect the clippings.
- the soil compacting device is also designed to collect the clippings.
- the soil compacting device has a collecting container arranged behind the material guide surface in the working direction, comprising a receiving opening and a material collecting region, the receiving opening being positioned in such a way that material guided by the material guiding surface located in the material guiding position enters the receiving opening when the movement continues in the working direction is conducted.
- the material guide surface directs the clippings both away from the subsurface layer and into the collection container.
- the collection container can, for example, also have a support frame and, for example, rollers or wheels with which the collection container can be guided on the ground.
- the collection container can also be designed in such a way that it can be guided at a distance from the ground and floating over it. In this case, the collecting container is fastened, for example, to the support structure of the soil compacting device.
- the invention also relates to an asphalt roller, in particular an articulated or pivot-steered tandem roller or a rubber-wheeled roller, with a soil compacting device according to the explanations above.
- a soil compacting device according to the explanations above.
- the features, effects and advantages of the soil compacting device mentioned above also apply correspondingly to the asphalt roller according to the invention.
- the invention also relates to a method for operating a soil compacting device, in particular a soil compacting device according to the above statements, with a compacting roller rotatably mounted on a support structure and a covering edge processing device mounted on the support structure, comprising an edge processing roller, an adjustment arm and an adjustment drive.
- the edge processing roller can be adjusted from a passive position into an edge processing position relative to the outer lateral surface of the compression roller, driven by an adjustment drive.
- the method according to the invention has at least the following steps: Adjusting the base edge processing device from the passive position to the edge processing position relative to the outer lateral surface of the compaction roller and a simultaneous, automatic adjustment of a clippings deflector relative to the base edge processing device, in particular into the material guide position.
- the method according to the invention is thus characterized in that the clippings deflector and in particular its material guide surface is adjusted automatically and triggered by the adjustment of the edge processing roller into the edge processing position in the material guide position.
- both adjustments, both the edge processing roller and the cut material deflector run simultaneously, in particular coupled or positively coupled. It is therefore only necessary according to the invention for the operator to activate the adjustment of the soil compacting device into the working position on a control device. He therefore does not have to adjust the clippings deflector separately from the edge processing roller in a separate work step.
- the method according to the invention provides that the adjustment of the clippings deflector relative to the covering edge processing device as a function of a Adjusting position of the adjusting arm of the roller holding device, gravity or an interaction of the cutting material deflector takes place with the ground. To avoid repetition, reference is made to the above statements.
- FIG 1 shows an asphalt roller 1, in the present case a tandem roller.
- the asphalt roller 1 has a machine frame 3 and a driver's cab 2 .
- Its running gear comprises support structures 6 and compaction rollers 5 mounted on the support structure 6, in the present case rolled bandages.
- the compacting rollers 5 are mounted on the machine frame 3 via the supporting structures 6 .
- the asphalt roller 1 has a drive motor 4, for example a diesel internal combustion engine or an electric motor that drives the asphalt roller 1.
- a drive motor 4 for example a diesel internal combustion engine or an electric motor that drives the asphalt roller 1.
- the compaction rollers 5 are rotated about a driving axis of rotation 11 .
- the ground comprises, for example, a subsoil 9 and a subsurface layer 8 arranged on the subsoil 9.
- the subsurface layer 8 is, for example, an asphalt layer which is to be compacted by the asphalt roller 1 in order to form a road.
- the subsoil 9 is, for example, soil material arranged under the asphalt layer.
- the asphalt roller 1 according to figure 1 has a soil compacting device 10 according to the invention, comprising a support structure 6, a compacting roller 5 and a surface edging device 7. In the exemplary embodiment shown, the soil compacting device 10 and in particular the surface edging device 7 is arranged at the front left of the asphalt roller 1.
- the soil compacting device 10 or the surface edge processing device 7 can just as well be arranged on the asphalt roller 1 at the front right or rear left or rear right.
- the base edge processing device 7 is in figure 2 in an enlarged side view in the same perspective as from figure 1 shown.
- the base edge processing device 7 is attached to the support structure 6 of the compaction roller 5 . It has an edge processing roller 12 which is mounted on the support structure 6 via a roller holding device 13, here an adjusting arm.
- the roller holding device 13 designed as an adjusting arm is mounted on the support structure 6 such that it can rotate about a pivot axis 30 .
- the edge processing roller 12 in turn is also attached to the roller holding device 13 such that it can rotate, specifically about a roller axis of rotation 15 .
- the cuttings deflector 16 is designed to convey cuttings separated from the subsurface layer 8 by the edge processing roller 12 during operation laterally, i.e.
- the cuttings deflector 16 comprises a bearing device 18, which is embodied here as a bearing arm, and a material guide surface 17 arranged on the bearing arm or on the bearing device 18. If the adjustment arm of the roll holding device 13 is pivoted about the pivot axis 30, the position of the edge processing roll 12 changes in the vertical direction .
- the base edge processing device 7 and in particular the edging roller 12 can be adjusted by pivoting the roller holding device 13 between a passive position in which the edging roller 12 has no ground contact and an edging position in which the edging roller 12 either cuts off or presses on part of the sub-floor covering layer 8.
- an adjustment drive 14 is provided, which in the exemplary embodiment shown is a hydraulic cylinder, in particular a double-acting hydraulic cylinder. The adjustment drive 14 thus adjusts the roll holding device 13 between the passive position and the edge processing position.
- a collection container 24 is also shown, which has a receiving opening 25 at the front in the working direction a and a material collection area 26 .
- the collection container 24 is designed and arranged on the soil compacting device 10 or the covering edge processing device 7 or the machine frame 3 of the asphalt roller 1 such that clippings conveyed away from the subsurface layer 8 by the material guide surface 17 when the asphalt roller 1 travels forward in the working direction a through the receiving opening 25 in the material collection area 26 of the collecting container 24 is conveyed.
- the collecting container 24 can have a ramp or a guide plate, for example, which is designed to guide the clippings into the receiving opening 25 .
- the collection container 24 is thus designed in such a way that it also collects the clippings that occur in the same operation as the processing of the edge of the subsurface layer 8 by the edge processing roller 12 . It therefore does not have to be collected in a separate work step by a separate machine, for example a wheel loader.
- the base edge processing device 7 is in figure 3 shown in a top view, which allows you to see their structure more clearly. That's how it goes figure 3 shows that the edge processing roller 12 is rotatably mounted via a bearing shaft 20 on the roller holding device 13, or the adjustment arm.
- the bearing device 18 or the bearing arm is also rotatably mounted on the bearing shaft 20 . From a synopsis with figure 4 it follows that the bearing device 18 or the bearing arm at least partially or almost completely surrounds the bearing shaft 20 in the exemplary embodiment shown.
- the bearing device 18 or the bearing arm can therefore likewise be rotated about the bearing shaft 20 , in particular about an adjustment axis 19 which corresponds to the axis of rotation 15 of the roller.
- the bearing arm or the bearing device 18 is acted upon by means for applying a positioning force 21 with a positioning force which is directed in particular vertically downwards.
- the means for actuating force 21 is formed in the embodiment shown as a gas pressure spring and between the bearing device 18 or the bearing arm and the roller holding device 13 or the adjusting arm.
- the means for applying the actuating force 21 causes the bearing device 18 or the bearing arm to rotate about the adjustment axis 19 in such a way that the clippings deflector 16 or the material guide surface 17 moves downwards in the vertical direction.
- the means for applying the actuating force 21 presses the material guide surface 17 onto the ground, for example the subsurface layer 8 or the ground 9. Pressing the material guide surface 17 onto the ground prevents the clippings deflector 16 from jumping, which means that the clippings are reliably conveyed away from the subsurface layer 8 is guaranteed.
- the Figures 3 and 4 also show a width bridging piece 23 of the clippings deflector 16, which is arranged between the bearing device 18 or the bearing arm and the material guide surface 17.
- the width bridging piece 23 spaces the bearing device 18 from the material guide surface 17, in particular over the entire width of the edge processing roller 12 in the direction of the roller axis of rotation 15 or the adjustment axis 19.
- FIG figure 3 that the entire bearing device 18 including the width bridging piece 23 along the roller axis of rotation 15 or the adjustment axis 19 seen from the outside of the machine at the same height and / or behind the edge processing roller 12 are arranged.
- the bearing device 18 and the width bridging piece 23 do not protrude outward beyond the edge processing roller 12 in the direction of the roller axis of rotation 15 or adjustment axis 19 .
- Only the material guide surface 17 projects beyond the edge processing roller 12 in the direction of the roller axis of rotation 15 or the adjustment axis 19 away from the machine.
- the material guide surface 17 protrudes beyond the edge processing roller 12 along the roller axis of rotation 15 or adjustment axis 19 via a material guide path 31.
- the material guide path 31 is defined by the material guide surface 17 and describes the path that the cuttings are conveyed by the material guide surface 17.
- the material routing path 31 runs in the direction of the roller axis of rotation 15 or the adjustment axis 19 in particular for example 5 cm to 15 cm, for example 5 cm to 10 cm, preferably 10 cm, beyond the edge processing roller 12 to the outside.
- the material guiding surface 17 is located behind the edge processing roller 12 in the working direction a in such a way that it conveys the clippings from the edge processing roller 12 transversely to the working direction a to the outside.
- the lower edge of the material guide surface 17 can be pressed floating on the ground, for example by the gas pressure spring representing the means for applying the actuating force 21 .
- the material guide surface 17 is then carried along with continuous ground contact.
- An adjustment path limiting device 22 can be provided for this purpose, as is shown, for example, in figure 4 is shown.
- the adjustment path limiting device 22 is a mechanical stop arranged on the roller holding device 13 or the adjustment arm. This can also be part of an elongated hole, for example, into which the bearing device 18 or the bearing arm protrudes at least partially and which limits the adjustment movement of the edge processing roller 12 .
- the adjustment path limiting device 22 prevents a displacement of the material guide surface 17 in the vertical direction so far downwards by means of a positive stop with the bearing device 18 or the bearing arm that the material guide surface 17 comes into contact with the ground.
- the adjustment path limiting device 22 thus stops the rotational movement of the bearing device 18 or of the bearing arm about the adjustment axis 19 before the material guide surface 17 touches the ground.
- the corresponding spacing can be a few millimeters, so that although increased wear on the material guide surface 17 is prevented, reliable collection or conveyance of the cuttings to the side is ensured at the same time.
- the core idea of the present invention is that the clippings deflector 16 is also automatically adjusted when the edge processing roller 12 is adjusted via the roller holding device 13 .
- the two figures show the covering edge processing device 7 in two different edge processing positions.
- figure 5 an edging position in which the edging roller 12 does not fully penetrate the sub-surface layer 8, e.g. an asphalt layer.
- the edging roller 12 penetrates the base covering layer 8 completely.
- the necessary movement of the edge processing roller 12 is brought about by pivoting the roller holding device 13 about the pivot axis 30, driven by the adjusting drive 14. As a result, the edge processing roller 12 can be adjusted in its vertical position.
- the cuttings deflector 16 and in particular the material guiding surface 17 has the correct material guiding position in both positions of the edge processing roller 12, the cuttings deflector 16 or the material guiding surface 17 is adjusted automatically and simultaneously to adjust the edge processing roller 12. In the exemplary embodiment shown, this takes place on the one hand through an interaction of the material guide surface 17 with the ground and on the other hand by the means designed as a gas pressure spring for applying the actuating force 21. If, for example, the edge processing roller 12 is moved from the vertically higher position according to FIG figure 5 to the vertically lower edging position as per figure 6 adjusted, the material guide surface 17 is pressed against the ground.
- the material guiding surface 17 is pressed vertically upwards from the ground, causing the bearing device 18 or the bearing arm to rotate about the adjustment axis 19.
- the gas pressure spring presses the material guiding surface 17 downwards, so that it is ensured that the material guiding surface 17 is always in contact stays with the ground and is not lifted off it. In this way, the material to be cut is always reliably caught by the material guide surface 17 .
- the vertical height of the material guiding surface 17 is therefore always automatically and automatically brought into the correct material guiding position, triggered by the adjustment of the edge processing roller 12 . An additional, manual adjustment of the clippings deflector 16 by an operator is not necessary.
- FIG figures 7 and 8 show an alternative embodiment of a covering edge processing device 7.
- FIG figure 7 a side view of the covering edge processing device 7 in the subsurface covering layer 8 completely penetrating working position.
- figure 8 shows the covering edge processing device 7 in a top view.
- the covering edge processing device 7 largely corresponds to the previous statements, to which reference is therefore made to avoid repetition.
- the bearing device 18, in particular its bearing arm is arranged further to the outside of the machine along the roller axis of rotation 15 than the edge processing roller 12.
- the edge processing roller 12 is arranged between the roller holding device 13 and the bearing device 18.
- a means 21 designed as a tension spring or spiral spring for applying the actuating force, which is arranged between the bearing device 18 , in particular its bearing arm, and the bearing shaft 20 penetrating the edge processing roller 12 .
- the bearing shaft 20 in turn can be connected to the roll holding device 13 .
- a force is applied to the bearing device 18 by the spiral spring, which triggers a rotation about the roller axis of rotation 15 , which in turn causes the material guide surface 17 to be pressed onto the subsurface layer 8 .
- the material guide surface 17 can be designed in such a way that it protrudes beyond the bearing device 18 on both sides along the roller axis of rotation 15, such that the material guide surface 17 extends from the edge processing roller 12 to the bearing device 18 and beyond this, away from the center of the machine. In this way, cut is well and reliably removed in the direction of the processed edge.
- FIG 9 shows a flowchart of the method 27 according to the invention.
- the method 27 includes an adjustment 28 of the covering edge processing device 7 from the passive position to the edge processing position relative to the outer lateral surface of the compaction roller 5.
- the adjustment 28 could also take place between two different edge processing positions, such as in the Figures 5 and 6 shown.
- the cuttings deflector 16 is also automatically adjusted 29 relative to the covering edge processing device 7 and in particular relative to the roll holding device 13 .
- the cutting material deflector 16 is automatically adjusted according to the invention into the correct material guide position of the material guide surface 17 for the respective edge processing position of the edge processing roller 12.
- the invention therefore provides a soil compacting device 10 that is particularly easy to operate, a simple one structure and which allows an operator to bring the edge processing roller 12 into the correct position at the push of a button, while at the same time ensuring without further work steps for the operator that the clippings produced are removed from the substrate layer 8 by the clippings deflector 16 in such a way that the Clippings can be collected more easily and quickly.
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- Engineering & Computer Science (AREA)
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- Soil Working Implements (AREA)
Description
Die Erfindung betrifft eine Bodenverdichtungsvorrichtung zur Verdichtung einer Untergrundbelagsschicht, eine Asphaltwalze sowie ein Verfahren zum Betrieb einer Bodenverdichtungsvorrichtung.The invention relates to a soil compacting device for compacting a subsurface layer, an asphalt roller and a method for operating a soil compacting device.
Bodenverdichtungsvorrichtungen finden häufig zur Verdichtung einer Untergrundbelagsschicht, beispielsweise einer Asphaltschicht, im Straßenbau oder ähnlichen Anwendungen Verwendung. Gemein ist diesen Bodenverdichtungsvorrichtungen, dass sie eine an einer Tragstruktur der Bodenverdichtungsvorrichtung um eine horizontale und quer zu einer Arbeitsrichtung verlaufende Fahrrotationsachse rotierbar gelagerte Verdichtungsrolle umfassen. Diese weist eine zylinderförmige und im Verdichtungsbetrieb auf dem Bodenuntergrund abrollende Außenmantelfläche auf. Eine solche Verdichtungsrolle kann beispielsweise ein Gummirad bei Gummiradwalzen oder eine sogenannte Bandage, beispielsweise aus einem Stahlwerkstoff und/oder einem Verbundwerkstoff, sein. Letztere umfasst typischerweise einen hohlzylinderförmigen Bandagenmantel, dessen häufig glatte Außenmantelfläche zur Bodenverdichtung genutzt wird. Insbesondere im Straßenbau ist es üblich, dass derartige Bodenverdichtungsvorrichtungen einem Straßenfertiger zur Nachverdichtung und weiteren Nachbearbeitung der ausgelegten Asphaltmatte folgen. Typischerweise handelt es sich hierbei um selbstfahrende Bodenverdichtungsvorrichtungen, mit häufig zwei oder mehr derartiger Verdichtungsrollen, in Form von Walzen, insbesondere Schemel- oder knickgelenkten Tandemwalzen. Gattungsgemäße Walzen sind beispielsweise in den Druckschriften
Über den reinen Verdichtungsvorgang hinausgehende Nachbearbeitungsprozesse umfassen beispielsweise das Ausbringen von Splitt zur Erhöhung der Griffigkeit des Straßenbelages oder die definierte Ausformung der Randbereiche der vom vorausfahrenden Straßenfertiger ausgebrachten Asphaltschicht. Die vorliegende Erfindung betrifft die Nachbearbeitung der Randbereiche der ausgebrachten Asphaltmatte mithilfe einer an der Tragstruktur angeordneten Belagskantenbearbeitungsvorrichtung. Derartige Belagskantenbearbeitungsvorrichtungen dienen dazu, bei einer Überfahrt der Asphaltmatte durch die Bodenverdichtungsvorrichtung eine formende und/oder schneidende Bearbeitung der Randkante der Asphaltmatte zu erreichen. Konkret können hier sogenannte Kantenschneider und Kantenandrückgeräte unterschieden werden, die jedoch beide einen zueinander durchaus vergleichbaren Grundaufbau aufweisen. Wesentliche Elemente einer solchen Belagskantenbearbeitungsvorrichtung sind eine, üblicherweise nicht angetriebene, Kantenbearbeitungsrolle, eine verstellbare Rollenhalteeinrichtung, insbesondere ein Verstellarm, sowie ein Verstellantrieb. Die Kantenbearbeitungsrolle ist von ihrem Durchmesser her üblicherweise deutlich kleiner als der Durchmesser der Verdichtungsrolle ausgebildet.Post-processing processes that go beyond the pure compaction process include, for example, the spreading of chippings to increase the grip of the road surface or the Defined shaping of the edge areas of the asphalt layer laid by the road finisher driving ahead. The present invention relates to the post-processing of the edge areas of the laid asphalt mat using a covering edge processing device arranged on the supporting structure. Such covering edge processing devices serve to achieve a shaping and/or cutting processing of the marginal edge of the asphalt mat when the asphalt mat is passed through by the soil compacting device. Specifically, so-called edge cutters and edge pressing devices can be distinguished here, which, however, both have a basic structure that is quite comparable to one another. Essential elements of such a covering edge processing device are an edge processing roller, which is usually not driven, an adjustable roller holding device, in particular an adjustment arm, and an adjustment drive. The diameter of the edge processing roller is usually designed to be significantly smaller than the diameter of the compression roller.
Die Kantenbearbeitungsrolle steht zumindest in einer Kantenbearbeitungsposition ferner in Richtung der Fahrrotationsachse wenigstens teilweise über die Stirnseite der Verdichtungsrolle (Bandage) vor, um im Arbeitsbetrieb den neben der Verdichtungsrolle, insbesondere unmittelbar an diese in Richtung der Fahrrotationsachse angrenzenden, Bodenuntergrund schneiden und/oder andrücken zu können. Dazu ist die Kantenbearbeitungsrolle an der verstellbaren Rollenhalteeinrichtung verstellbar zwischen einer Passivposition bzw. einer gegenüber dem Bodenuntergrund kontaktfreien Transportposition und der Kantenbearbeitungsposition relativ zur Außenmantelfläche der Verdichtungsrolle verstellbar. Die Passivposition bezeichnet dabei eine Position, in der die Kantenbearbeitungsrolle in radialer Richtung zur Fahrrotationsachse der Verdichtungsrolle überstandsfrei gegenüber dem in vertikaler Richtung unteren Scheitelpunkt des Querschnitts der Verdichtungsrolle ist und damit üblicherweise kontaktfrei gegenüber der Untergrundbelagsschicht ist. Die Kantenbearbeitungsposition hingegen bezeichnet eine Stellposition der I<antenbearbeitungsrolle, bei der diese wenigstens bündig mit dem in vertikaler Richtung unteren Scheitelpunkt der Verdichtungsrolle positioniert ist oder bevorzugt, in definiertem Ausmaß in vertikaler Richtung nach unten sogar über die Außenmantelfläche der Verdichtungsrolle vorsteht, insbesondere in Bezug auf den unteren Scheitelpunkt der Außenmantelfläche der Verdichtungsrolle. Wichtig ist dabei, dass es üblicherweise nicht die eine Kantenbearbeitungsposition gibt, sondern die Kantenbearbeitungsposition in einem definierten Bereich variabel ist, um beispielsweise Anpassungsmaßnahmen an die jeweilige Dicke der Untergrundbelagsschicht zu erlauben. In der Kantenbearbeitungsposition schneidet die Kantenbearbeitungsrolle somit in die Untergrundbelagsschicht ein und/oder drückt diese im Seitenbereich an, um eine geradlinige und gleichmäßig ausgeformte Untergrundbelagsschichtkante zu erhalten.At least in one edge processing position, the edge processing roller also protrudes in the direction of the travel axis of rotation at least partially beyond the front side of the compaction roller (bandage) in order to be able to cut and/or press down the soil next to the compaction roller, in particular directly adjacent to it in the direction of the travel axis of rotation . For this purpose, the edge processing roller on the adjustable roller holding device can be adjusted between a passive position or a transport position without contact with the ground and the edge processing position relative to the outer lateral surface of the compaction roller. The passive position refers to a position in which the edge processing roller does not protrude in the radial direction to the travel axis of rotation of the compaction roller in relation to the vertex of the lower vertex of the cross section of the compaction roller and is therefore usually not in contact with the subsurface layer. The edge processing position, on the other hand, refers to an adjustment position of the edge processing roller, in which it is positioned at least flush with the lower vertex of the compaction roller in the vertical direction or, preferably, projects to a defined extent in the vertical direction downwards even beyond the outer lateral surface of the compaction roller, in particular with regard to the lower apex of the outer surface of the compaction roller. It is important here that there is usually not just one edge processing position, but that the edge processing position is variable within a defined range, for example in order to allow adaptation measures to the respective thickness of the underground covering layer. In the edge-processing position, the edge-processing roller thus cuts into the sub-floor covering layer and/or presses it in the lateral area in order to obtain a straight and evenly shaped sub-floor covering layer edge.
Damit der Fahrer einer solchen Bodenverdichtungsvorrichtung nicht bei jedem Wechsel der Stellposition der Belagskantenbearbeitungsrolle zwischen der Passivposition und der Kantenbearbeitungsposition händisch tätig werden muss, ist die Belagskantenbearbeitungsrolle vorzugsweise mithilfe eines Verstellantriebs an der Rollenhalteeinrichtung, insbesondere einem Verstellarm, verstellbar gelagert. Ein solcher Verstellantrieb kann beispielsweise eine hydraulische Zylinderkolbeneinheit sein.So that the driver of such a soil compacting device does not have to work manually every time the setting position of the base edge processing roller is changed between the passive position and the edge processing position, the base edge processing roller is preferably adjustably mounted on the roller holding device, in particular an adjustment arm, with the aid of an adjustment drive. Such an adjusting drive can be a hydraulic cylinder-piston unit, for example.
Beispiele von Belagskantenbearbeitungsvorrichtungen sind beispielsweise in der
Anwender derartiger Belagskantenbearbeitungsvorrichtungen ergänzen ab Werk verfügbare Belagskantenbearbeitungsvorrichtungen manchmal mit einem pflugartigen Schnittgutabweiser mit wenigstens einer Materialleitfläche, die dazu vorgesehen ist, im Arbeitsbetrieb der Belagskantenbearbeitungsvorrichtung auftretendes Belagsschnittgut beim Passieren der Untergrundbelagsschicht von der Untergrundbelagschicht in Richtung der Fahrrotationsachse weg zu schieben. Mithilfe eines solchen Schnittgutabweisers soll das von der Untergrundbelagsschicht abgeschnittene Untergrundbelagsmaterial somit von der Untergrundbelagsschicht zur Seite weggeschoben werden, um einerseits Nachbearbeitungsmaßnahmen zu verringern und andererseits ein Aufsammeln des abgetrennten Schnittgutes zu erleichtern. Ein solcher Schnittgutabweiser ist beispielsweise in der
Die bekannten Schnittgutabweiser haben allerdings den Nachteil, dass sie für einen präzisen Betrieb eine manuelle Justierung erfordern, die von dem Nutzer als unkomfortabel und damit nachteilig empfunden wird. Darüber hinaus führt dies häufig zu unzureichenden Arbeitsergebnissen, sodass hier insgesamt ein Optimierungsbedarf gegeben ist.However, the known clippings deflectors have the disadvantage that they require manual adjustment for precise operation, which the user finds uncomfortable and therefore disadvantageous. In addition, this often leads to insufficient work results, so that there is an overall need for optimization.
Vom bekannten Stand der Technik ausgehend liegt die Erfindung somit darin, eine Bodenverdichtungsvorrichtung der gattungsgemäßen Art mit einem Schnittgutabweiser anzugeben, der gegenüber den bekannten Lösungen einen erleichterten Betrieb, insbesondere auch hinsichtlich der Abstimmung auf verschiedene Untergrundbelagsschichtdicken, ermöglicht.Proceeding from the known prior art, the invention thus consists in specifying a soil compacting device of the generic type with a clippings deflector which, compared to the known solutions, enables easier operation, in particular with regard to adjustment to different subsurface layer thicknesses.
Die Lösung der Aufgabe gelingt mit einer Bodenverdichtungsvorrichtung, einer Asphaltswalze sowie einem Verfahren zum Betrieb einer Bodenverdichtungsvorrichtung gemäß den unabhängigen Ansprüchen. Bevorzugte Weiterbildungen sind in den abhängigen Ansprüchen angegeben.The object is achieved with a soil compacting device, an asphalt roller and a method for operating a soil compacting device according to the independent claims. Preferred developments are specified in the dependent claims.
Eine vorliegend gattungsgemäße Bodenverdichtungsvorrichtung zur Verdichtung einer Untergrundbelagsschicht weist wenigstens eine an einer Tragstruktur der Bodenverdichtungsvorrichtung um eine horizontale und quer zu einer Arbeitsrichtung verlaufende Fahrrotationsachse rotierbar gelagerte Verdichtungsrolle auf, die eine zylinderförmige und im Verdichtungsbetrieb auf dem Bodenuntergrund abrollende Außenmantelfläche umfasst. Über die Abrollbewegung kontaktiert die Bodenverdichtungsvorrichtung den zu verdichtenden Bodenuntergrund. Dies kann statisch oder aber auch dynamisch mit Hilfe an sich bekannter Schwingungserreger erfolgen. Weiter umfasst die Bodenverdichtungsvorrichtung eine an der Tragstruktur angeordnete Belagskantenbearbeitungsvorrichtung. Die Belagskantenbearbeitungsvorrichtung dient dazu, die Belagskante beim Passieren der Untergrundbelagsschicht durch die Bodenverdichtungsvorrichtung zu bearbeiten, beispielsweise zu schneiden und/oder anzudrücken. Die Belagskantenbearbeitungsvorrichtung umfasst dazu in an sich bekannter Weise eine Kantenbearbeitungsrolle, eine verstellbare Rollenhalteeinrichtung, insbesondere einen Verstellarm, sowie einen Verstellantrieb, wobei die Kantenbearbeitungsrolle um eine Rollenrotationsachse drehbar an der verstellbaren Rollenhalteeinrichtung gelagert ist. Die Kantenbearbeitungsrolle ist üblicherweise nicht angetrieben und frei drehbar an der Rollenhalteeinrichtung angeordnet. Sie kann eine zentrale Lagerachse sowie eine die Lagerachse umlaufende, insbesondere in radialer Richtung schräg verlaufende Bearbeitungsoberfläche, aufweisen. Die verstellbare Rollenhalteeinrichtung ist derart ausgebildet, dass sie zusammen mit der Kantenbearbeitungsrolle aus einer Passivposition in eine Kantenbearbeitungsposition relativ zur Außenmantelfläche der Verdichtungsrolle durch den Verstellantrieb angetrieben verstellbar an der Tragstruktur gelagert ist. Dazu kann die verstellbare Rollenhalteeinrichtung insbesondere ein Verstellarm und/oder Verstellhebel sein, der an einer Seite verstellbar gegenüber der Tragstruktur an dieser gelagert ist und beabstandet zu dieser Lagerstelle ein Lager für die Kantenbearbeitungsrolle aufweist. Grundsätzlich kann die Art der Verstellbewegung zwischen der Passivposition und der Kantenbearbeitungsposition variieren. Bevorzugt ist es allerdings, wenn der Verstellarm gegenüber der Tragstruktur um eine Verschwenkachse zwischen der Passivposition und einer Kantenbearbeitungsposition verschwenkbar ist. Die Verschwenkachse kann dabei insbesondere parallel zur Fahrrotationsachse der Verdichtungsrolle verlaufen.A soil compaction device of the present generic type for compacting a subsurface layer has at least one compaction roller, which is mounted on a support structure of the soil compaction device so as to be rotatable about a horizontal axis of rotation running transversely to a working direction and which comprises a cylindrical outer jacket surface that rolls on the soil subsoil during compaction operation. The soil compaction device makes contact with the soil substrate to be compacted via the rolling movement. This can be done statically or also dynamically with the help of known vibration exciters. Furthermore, the soil compacting device comprises a covering edge processing device arranged on the support structure. The covering edge processing device serves to process the covering edge as the subsurface covering layer passes through the soil compacting device, for example to cut and/or press on. For this purpose, the covering edge processing device comprises, in a manner known per se, an edge processing roller, an adjustable roller holding device, in particular an adjusting arm, and an adjusting drive, the edge processing roller being mounted on the adjustable roller holding device so that it can rotate about a roller axis of rotation. The edge processing roller is usually not driven and is freely rotatably arranged on the roller holding device. It can have a central bearing axis as well as a machining surface running around the bearing axis, in particular running obliquely in the radial direction. The adjustable roller holding device is designed in such a way that it is mounted on the support structure together with the edge processing roller from a passive position into an edge processing position relative to the outer lateral surface of the compression roller, driven by the adjustment drive. For this purpose, the adjustable roll holding device can in particular be an adjusting arm and/or adjusting lever, which is adjustable on one side and is mounted on the supporting structure relative to the supporting structure and has a bearing for the edge processing roll at a distance from this bearing point. In principle, the type of adjustment movement can vary between the passive position and the edge processing position. However, it is preferred if the adjustment arm can be pivoted relative to the support structure about a pivot axis between the passive position and an edge processing position. The pivoting axis can in particular run parallel to the travel axis of rotation of the compaction roller.
Ein weiteres gattungsbildendes Element der erfindungsgemäßen Bodenverdichtungsvorrichtung ist der Schnittgutabweiser, dessen Aufgabe darin liegt, das von der Untergrundbelagsschicht abgetrenntes Untergrundbelagsschicht-Schnittgut weiter zur Seite von der Untergrundbelagsschicht weg zu schieben, um ein anschließendes Aufsammeln oder Ähnliches zu erleichtern. Der Schnittgutabweiser umfasst dazu wenigstens eine Materialleitfläche, die dazu vorgesehen ist, im Arbeitsbetrieb der Belagskantenbearbeitungsvorrichtung auftretendes Belagsschnittgut beim Passieren der Untergrundbelagsschicht von der Untergrundbelagsschicht in Richtung der Fahrrotationsachse weg zu schieben. Die Materialleitfläche ist funktional somit mit einem Pflugelement vergleichbar und umfasst somit eine zumindest teilweise schräg zur Fahrrotationsachse verlaufende Oberfläche, die das Schnittgut bei einer Passage der Bodenverdichtungsvorrichtung in Arbeitsrichtung vom Rand der Untergrundbelagsschicht zur Seite schiebt.Another generic element of the soil compacting device according to the invention is the cuttings deflector, the task of which is to push the cuttings of the cuttings of the cuttings, which have been separated from the cuttings, further away from the cuttings to facilitate subsequent collection or the like. For this purpose, the clippings deflector comprises at least one material guiding surface, which is provided for covering clippings occurring during operation of the covering edge processing device when passing through the underground covering layer to be pushed away from the sub-surface layer in the direction of the axis of rotation of the vehicle. The material guiding surface is thus functionally comparable to a plow element and thus comprises a surface running at least partially obliquely to the travel axis of rotation, which pushes the clippings aside from the edge of the subsurface layer in the working direction when passing through the soil compacting device.
Wesentlich ist nun, dass der Schnittgutabweiser nicht statisch fest oder ausschließlich manuell verstellbar an beispielsweise der Tragstruktur der Bodenverdichtungsvorrichtung positioniert ist, sondern er mithilfe einer Lagereinrichtung an der Belagskantenbearbeitungsvorrichtung gelagert ist. Funktional bewirkt eine Verstellung der Belagskantenbearbeitungsvorrichtung relativ zur Tragstruktur somit auch eine Änderung der Relativlage des Schnittgutabweisers relativ zur Tragstruktur. Allerdings ist die Lagereinrichtung des Schnittgutabweisers an der Belagskantenbearbeitungsvorrichtung über eine fixe Lagerung hinaus derart ausgebildet, dass die Relativlage des Schnittgutabweisers bzw. der wenigstens einen Materialleitfläche des Schnittgutabweisers zur Belagskantenbearbeitungsvorrichtung und insbesondere zur Rollenhalteeinrichtung, insbesondere selbsttätig, veränderbar ist. Selbsttätig ist dabei derart zu verstehen, dass hierfür keine gesonderte manuelle Verstellung durch den Bediener erforderlich ist, sondern die Verstellung aufgrund anderer Faktoren erfolgt. Damit ist es möglich, die Relativlage des Schnittgutabweisers ohne individuelle händische Justierung durch den Bediener zu erreichen und damit selbsttätig in optimierter Weise an die aktuelle Betriebssituation, insbesondere in der Kantenbearbeitungsposition der Kantenbearbeitungsrolle, anzupassen. Die Relativlage des Schnittgutabweisers wird insbesondere derart angepasst, dass die zum Boden gerichtete Seite des Schnittgutabweisers und insbesondere der Materialleitfläche in der Kantenbearbeitungsposition der Kantenbearbeitungsrolle auf gleicher Höhe, beispielsweise in der gleichen Horizontalebene, wie der untere Scheitelpunkt der Kantenbearbeitungsrolle liegt. Als unterer Scheitelpunkt der Kantenbearbeitungsrolle wird der vertikal unterste Punkt der Kantenbearbeitungsrolle verstanden. Diese Position des Schnittgutabweisers beziehungsweise der Materialleitfläche wird auch als Materialleitposition bezeichnet.It is now essential that the clippings deflector is not positioned statically fixed or only manually adjustable on, for example, the support structure of the soil compacting device, but is mounted on the covering edge processing device with the aid of a bearing device. Functionally, an adjustment of the covering edge processing device relative to the supporting structure thus also causes a change in the relative position of the clippings deflector relative to the supporting structure. However, the bearing device of the clippings deflector on the base edge processing device is designed in addition to a fixed bearing in such a way that the relative position of the clippings deflector or the at least one material guide surface of the clippings deflector to the base edge processing device and in particular to the roller holding device can be changed, in particular automatically. Automatic is to be understood in such a way that no separate manual adjustment by the operator is necessary for this, but the adjustment takes place on the basis of other factors. This makes it possible to achieve the relative position of the clippings deflector without individual manual adjustment by the operator and thus automatically and optimally adapt it to the current operating situation, particularly in the edge processing position of the edge processing roller. The relative position of the clippings deflector is adjusted in particular in such a way that the side of the clippings deflector and in particular the material guide surface facing the ground is at the same height, for example in the same horizontal plane, as the lower apex of the edge processing roller when the edge processing roller is in the edge processing position. The lower apex of the edge processing roller is understood to be the vertically lowest point of the edge processing roller. This position of the clippings deflector or the material guide surface is also referred to as the material guide position.
Hinsichtlich der konkreten Ausgestaltung der selbsttätigen Anpassung bestehen verschiedene erfindungsgemäße Möglichkeiten. Einerseits ist es möglich, dass die Lagereinrichtung zur Lagerung des Schnittgutabweisers derart ausgebildet ist, dass sie die Relativlage der wenigstens einen Materialleitfläche gegenüber der verstellbaren Rollenhalteeinrichtung in Abhängigkeit von der Stellposition der verstellbaren Rollenhalteeinrichtung gegenüber der Tragstruktur verstellt. Diese Ausführungsform kann somit ein Kopplungsmittel umfassen, welches in der Wirkweise eines Getriebes eine Positionsänderung der Rollenhalteeinrichtung in eine Verstellbewegung der Materialleitfläche des Schnittgutabweisers relativ zu der Rollenhalteeinrichtung umsetzt. Die Verstellbewegung der Materialleitfläche des Schnittgutabweisers relativ zur Rollenhalteeinrichtung ist dabei bevorzugt zwangsgekoppelt. Hierzu kann beispielsweise auf geeignete Führungsgetriebe zurückgegriffen werden, die eine entsprechende Zwangskoppelung der Lagereinrichtung des Schnittgutabweisers und der verstellbaren Rollenhalteeinrichtung ermöglicht, beispielsweise über die Bildung eines Lenkergetriebes oder ähnlichem.With regard to the specific design of the automatic adjustment, there are various possibilities according to the invention. On the one hand it is possible that the bearing device for bearing the cuttings deflector is designed in such a way that it adjusts the relative position of the at least one material guide surface relative to the adjustable roller holding device depending on the setting position of the adjustable roller holding device in relation to the supporting structure. This embodiment can thus comprise a coupling means which, in the manner of operation of a gear, converts the position of the roller holding device into an adjustment movement of the material guide surface of the clippings deflector relative to the roll holding device. The adjustment movement of the material guide surface of the clippings deflector relative to the roll holding device is preferably positively coupled. For this purpose, suitable guide gears can be used, for example, which enable a corresponding positive coupling of the bearing device of the clippings deflector and the adjustable roller holding device, for example by forming a link gear or the like.
Ergänzend oder alternativ kann es auch vorgesehen sein, dass die Lagereinrichtung derart ausgebildet ist, dass sie die Relativlage der wenigstens einen Materialleitfläche gegenüber der verstellbaren Rollenhalteeinrichtung schwerkraftabhängig beziehungsweise gewichtskraftabhängig verstellt. Hierfür kann beispielsweise vorgesehen sein, dass die Lagereinrichtung des Schnittgutabweisers derart an der Belagskantenbearbeitungsvorrichtung gelagert ist, dass die Gewichtskraft des Schnittgutabweisers ausreicht, um den Schnittgutabweiser und insbesondere die Materialleitfläche vertikal nach unten abzusenken, bis der Schnittgutabweiser und insbesondere die Materialleitfläche auf dem Bodenuntergrund aufliegen. Hierfür kann beispielsweise eine drehweiche Lagerung zwischen dem Schnittgutabweiser und der Belagskantenbearbeitungsvorrichtung vorgesehen sein. Der Schnittgutabweiser beziehungsweise die Materialleitfläche wird somit schwimmend auf dem Bodenuntergrund mitgeführt. Der Bodenuntergrund kann dabei beispielsweise eine Belagsschicht oder der unter der Belagsschicht vorhandene Untergrund beziehungsweise Boden sein. Beispielsweise handelt es sich um eine Asphaltschicht und/oder den unter der Asphaltschicht liegenden Untergrund. Diese Ausführungsform ist besonders einfach und kostengünstig herzustellen.In addition or as an alternative, it can also be provided that the bearing device is designed in such a way that it adjusts the relative position of the at least one material guide surface in relation to the adjustable roller holding device as a function of gravity or as a function of weight. For this purpose, it can be provided, for example, that the bearing device of the clippings deflector is mounted on the covering edge processing device in such a way that the weight of the clippings deflector is sufficient to vertically lower the clippings deflector and in particular the material guide surface until the clippings deflector and in particular the material guide surface rest on the ground. For this purpose, for example, a torsionally flexible mounting can be provided between the clippings deflector and the covering edge processing device. The clippings deflector or the material guide surface is thus carried along floating on the ground. The subsoil can be, for example, a covering layer or the subsoil or soil present under the covering layer. For example, it is an asphalt layer and/or the subsoil beneath the asphalt layer. This embodiment is particularly easy and inexpensive to manufacture.
Weiter ergänzend oder alternativ ist es gemäß einer erfindungsgemäßen Ausführungsform vorgesehen, dass die Lagereinrichtung derart ausgebildet ist, dass sie die Relativlage der wenigstens einen Materialleitfläche gegenüber der verstellbaren Rollenhalteeinrichtung durch Wechselwirkung mit einem Bodenuntergrund verstellt. Beispielsweise kann vorgesehen sein, dass der Schnittgutabweiser beziehungsweise die Materialleitfläche durch einen Kontakt mit dem Bodenuntergrund entgegen der eigenen Gewichtskraft vertikal nach oben gedrückt werden. Die Lagereinrichtung ist dann speziell derart ausgebildet, dass sie derartige Bewegungen des Schnittgutabweisers beziehungsweise der Materialleitfläche, die durch den Kontakt mit dem Bodenuntergrund induziert werden, zulässt und damit ermöglicht.Furthermore, additionally or alternatively, according to an embodiment of the invention, it is provided that the bearing device is designed in such a way that it adjusts the relative position of the at least one material guide surface in relation to the adjustable roller holding device through interaction with the ground. For example, it can be provided that the clippings deflector or the material guide surface is pressed vertically upwards against its own weight by contact with the ground. The bearing device is then specially designed in such a way that it permits and thus enables movements of the clippings deflector or the material guide surface that are induced by contact with the ground.
Grundsätzlich kann der Schnittgutabweiser als zusätzliches Bauteil an der Tragstruktur der Bodenverdichtungsvorrichtung oder am Maschinenrahmen einer die Bodenverdichtungsvorrichtung aufweisenden Bodenverdichtungsmaschine, beispielsweise Asphaltwalze, angeordnet sein. Um insbesondere die Relativposition des Schnittgutabweisers zur Rollenhalteeinrichtung beziehungsweise der Kantenbearbeitungsrolle besser steuern zu können, ist es allerdings bevorzugt, dass der Schnittgutabweiser unmittelbar an der Belagskantenbearbeitungsvorrichtung verstellbar gelagert ist. Der Schnittgutabweiser kann daher als Teil der Belagskantenbearbeitungsvorrichtung angesehen werden. Insbesondere bewegt sich der Schnittgutabweiser zusammen mit der Belagskantenbearbeitungsvorrichtung, wenn diese in ihrer Position, beispielsweise gegenüber der Tragstruktur, verstellt wird. Erfindungsgemäß wird bei einer derartigen Positionsverstellung der Belagskantenbearbeitungsvorrichtung selbsttätig beziehungsweise automatisch die Relativlage des Schnittgutabweisers beziehungsweise der Materialleitfläche gegenüber der verstellbaren Rollenhalteeinrichtung der Belagskantenbearbeitungsvorrichtung verändert. Eine derartige Koppelung der Bewegungsabläufe gelingt besonders einfach, wenn der Schnittgutabweiser unmittelbar an der Belagskantenbearbeitungsvorrichtung verstellbar gelagert ist und daher mit dieser mitbewegt wird.In principle, the clippings deflector can be arranged as an additional component on the support structure of the soil compacting device or on the machine frame of a soil compacting machine, for example an asphalt roller, having the soil compacting device. To in particular In order to be able to better control the position of the clippings deflector relative to the roller holding device or the edge processing roller, it is preferred that the clippings deflector is adjustably mounted directly on the covering edge processing device. The clippings deflector can therefore be regarded as part of the covering edge processing device. In particular, the clippings deflector moves together with the covering edge processing device when its position is adjusted, for example in relation to the supporting structure. According to the invention, with such a position adjustment of the covering edge processing device, the relative position of the cuttings deflector or the material guide surface relative to the adjustable roller holding device of the covering edge processing device is changed automatically. Such a coupling of the movement sequences is particularly easy if the clippings deflector is adjustably mounted directly on the covering edge processing device and is therefore moved along with it.
Gemäß einer bevorzugten Ausführungsform weist die Lagereinrichtung des Schnittgutabweisers einen Lagerarm auf. Der Lagerarm ist einerseits mit der Belagskantenbearbeitungsvorrichtung verbunden. Andererseits trägt der Lagerarm ebenfalls die Materialleitfläche. Bevorzugt ist der Lagerarm um eine Verstellachse relativ der verstellbaren Rollenhalteeinrichtung der Kantenbearbeitungsvorrichtung rotierbar ausgebildet. Der Lagerarm ist also als Schwenkarm ausgebildet, der um seinen Anbindungspunkt an der Belagskantenbearbeitungsvorrichtung schwenkbar ist. Damit ist auch die Materialleitfläche um den Anbindungspunkt des Lagerarms an der Belagskantenbearbeitungsvorrichtung schwenkbar. Ergänzend oder alternativ kann es auch vorgesehen sein, dass der Lagerarm entlang einer Stellkurve relativ zur verstellbaren Rollenhalteeinrichtung der Kantenbearbeitungsvorrichtung, insbesondere linear, verschiebbar ausgebildet ist. Die entsprechende Stellkurve des Lagerarms wird beispielsweise durch eine Kulissenführung realisiert. Der die Kulissenführung enthaltende Rahmen kann beispielsweise an der Belagskantenbearbeitungsvorrichtung befestigt sein. Beide Bewegungsmöglichkeiten des Lagerarms, Verschwenkung und Verschiebung, ermöglichen die erfindungsgemäße selbsttätige Veränderung der Relativlage der Materialleitfläche des Schnittgutabweisers gegenüber der Rollenhalteeinrichtung.According to a preferred embodiment, the bearing device of the clippings deflector has a bearing arm. On the one hand, the bearing arm is connected to the covering edge processing device. On the other hand, the bearing arm also carries the material guide surface. The bearing arm is preferably designed to be rotatable about an adjustment axis relative to the adjustable roll holding device of the edge processing device. The bearing arm is therefore designed as a swivel arm which can be swiveled about its connection point on the covering edge processing device. The material guide surface can thus also be pivoted about the connection point of the bearing arm on the covering edge processing device. In addition or as an alternative, it can also be provided that the bearing arm is designed to be displaceable, in particular linearly, along an adjusting curve relative to the adjustable roller holding device of the edge processing device. The corresponding adjustment curve of the bearing arm is realized, for example, by a slotted guide. The frame containing the connecting link guide can be fastened to the covering edge processing device, for example. Both possibilities of movement of the bearing arm, pivoting and displacement, enable the automatic change according to the invention of the relative position of the material guide surface of the clippings deflector in relation to the roll holding device.
Der verschwenkbare Lagerarm der Lagereinrichtung kann grundsätzlich an einem beliebigen Punkt der Belagskantenbearbeitungsvorrichtung schwenkbar gelagert sein. Eine besonders einfache und zuverlässige Einstellung einer gewünschten Relativposition der Materialleitfläche zur Kantenbearbeitungsrolle beziehungsweise zur Rollenhalteeinrichtung gelingt gemäß einer bevorzugten Ausführungsform dadurch, dass der Lagerarm der Lagereinrichtung des Schnittgutabweisers koaxial zur Rollenrotationsachse der Kantenbearbeitungsrolle relativ zur verstellbaren Rollenhalteeinrichtung rotierbar gelagert ist. Der Anbindungspunkt des Lagerarms an der Belagskantenbearbeitungsvorrichtung ist also derart gewählt, dass die Verstellachse, um die der Lagerarm verschwenkbar ist, identisch ist mit der Rollenrotationsachse, um die die Kantenbearbeitungsrolle im Arbeitsbetrieb rotierbar gelagert ist. Auf diese Weise wird auf einfache Art gewährleistet, dass die Materialleitfläche in jeder Arbeitsposition denselben Abstand zur Kantenbearbeitungsrolle einnimmt und daher immer optimale Arbeitsergebnisse erzielbar sind.In principle, the pivotable bearing arm of the bearing device can be pivoted at any point of the covering edge processing device. A particularly simple and reliable setting of a desired relative position of the material guide surface to the edge processing roller or to the roller holding device is achieved according to a preferred embodiment in that the bearing arm of the bearing device of the cut material deflector can be rotated coaxially to the roller axis of rotation of the edge processing roller relative to the adjustable roller holding device is stored. The connection point of the bearing arm to the covering edging device is therefore selected such that the adjustment axis about which the bearing arm can be pivoted is identical to the roller axis of rotation about which the edging roller is rotatably mounted during operation. In this way, it is ensured in a simple manner that the material guide surface is at the same distance from the edge processing roller in every working position, and therefore optimum work results can always be achieved.
Es ist grundsätzlich bevorzugt, dass die Kantenbearbeitungsrolle von der Maschinenaußenseite aus entlang der Rollenrotationsachse gesehen vor der Lagereinrichtung, insbesondere dem Lagerarm, angeordnet ist. Die Kantenbearbeitungsrolle ist mit anderen Worten quer zur Arbeitsrichtung weiter außen an der Maschine angeordnet als die Lagereinrichtung. Die Materialleitfläche dagegen steht auch über die Kantenbearbeitungsrolle nach außen vor. Auf diese Weise wird sichergestellt, dass von der Kantenbearbeitungsrolle abgeschnittenes Schnittgut auch tatsächlich von der Materialleitfläche erfasst und von der Untergrundbelagsschicht weg bewegt wird. Darüber hinaus ist bevorzugt, dass die Lagereinrichtung, insbesondere der Lagerarm, entlang der Rollenrotationsachse ausschließlich hinter der Kantenbearbeitungsrolle angeordnet ist. Lediglich die Materialleitfläche ragt nach außen vor, an der Kantenbearbeitungsrolle vorbei und weiter nach außen. Auf diese Weise wird die Maschinenbreite im Bereich der Kantenbearbeitungsrolle von der Lagereinrichtung nicht vergrößert. Eine besonders platzsparende, bevorzugte Ausführungsform sieht vor, dass von der Maschinenaußenseite aus entlang der Rollenrotationsachse gesehen die Elemente Kantenbearbeitungsrolle, Lagereinrichtung, insbesondere Lagerarm der Lagereinrichtung, und verstellbare Rollenhalteeinrichtungen der Belagskantenbearbeitungsvorrichtung aufeinander folgen. Mit anderen Worten ist vorgesehen, dass die Lagereinrichtung, insbesondere der Lagerarm der Lagereinrichtung, wenigstes teilweise in Richtung der Rollenrotationsachse gesehen zwischen der Kantenbearbeitungsrolle und der verstellbaren Rollenhalteeinrichtung der Belagskantenbearbeitungsvorrichtung angeordnet ist. Die Rollenrotationsachse verläuft quer zur Arbeitsrichtung. Durch die entsprechende Anordnung wird erreicht, dass der Lagerarm besonders kurz ausgebildet werden kann, und dennoch die Materialleitfläche in unmittelbarer Nähe der Kantenbearbeitungsrolle angeordnet ist, was einen zuverlässigen Arbeitsbetrieb ermöglicht.In principle, it is preferred that the edge processing roller is arranged in front of the bearing device, in particular the bearing arm, as seen from the outside of the machine along the axis of rotation of the roller. In other words, the edge processing roller is arranged further outside on the machine, transversely to the working direction, than the bearing device. The material guide surface, on the other hand, also projects outwards beyond the edge processing roller. In this way it is ensured that clippings cut off by the edge processing roller are actually caught by the material guide surface and moved away from the sub-floor covering layer. In addition, it is preferred that the bearing device, in particular the bearing arm, is arranged along the axis of rotation of the roller exclusively behind the edge processing roller. Only the material guide surface protrudes outwards, past the edge processing roller and further outwards. In this way, the machine width in the area of the edge processing roll is not increased by the storage device. A particularly space-saving, preferred embodiment provides that the elements edge processing roller, bearing device, in particular bearing arm of the bearing device, and adjustable roller holding devices of the covering edge processing device follow one another viewed from the outside of the machine along the axis of rotation of the roller. In other words, it is provided that the bearing device, in particular the bearing arm of the bearing device, is arranged at least partially between the edge processing roller and the adjustable roller holding device of the covering edge processing device, viewed in the direction of the roller axis of rotation. The axis of rotation of the roller runs transversely to the working direction. The corresponding arrangement ensures that the bearing arm can be made particularly short, and the material guide surface is nevertheless arranged in the immediate vicinity of the edge processing roller, which enables reliable operation.
Eine weitere bevorzugte Ausführungsform der Erfindung sieht alternativ hierzu vor, dass die Lagereinrichtung, insbesondere der Lagerarm der Lagereinrichtung, in Richtung der Rollenrotationsachse gesehen auf der der Verdichtungsrolle abgewandten Seite der Kantenbearbeitungsrolle angeordnet ist. In diesem Fall ist mit anderen Worten die Lagereinrichtung, insbesondere der Lagerarm, von der Maschinenaußenseite aus entlang der Rollenrotationsachse gesehen vor der Kantenbearbeitungsrolle angeordnet. Die Lagereinrichtung ist also quer zur Arbeitsrichtung weiter außen an der Maschinen angeordnet als die Kantenbearbeitungsrolle. Auch hier steht allerdings die Materialleitfläche sowohl über die Kantenbearbeitungsrolle als auch über die Lagereinrichtung nach außen vor. In dieser Ausführungsform folgen also von der Maschinenaußenseite aus entlang der Rollenrotationsachse gesehen die Elemente Lagereinrichtung, insbesondere Lagerarm der Lagereinrichtung, Kantenbearbeitungsrolle und verstellbare Rollenhalteeinrichtung der Belagskantenbearbeitungsvorrichtung aufeinander. Die Kantenbearbeitungsrolle liegt mit anderen Worten in Richtung der Rollenrotationsachse gesehen zwischen der Lagereinrichtung, insbesondere dem Lagerarm der Lagereinrichtung, und der verstellbaren Rollenhalteeinrichtung. Insbesondere ist der Lagerarm in dieser Ausführungsform an einer durch die Kantenbearbeitungsrolle auf die der Verdichtungsrolle abgewandte Seite der Kantenbearbeitungsrolle hindurchgeführte Lagerwelle angeordnet beziehungsweise gelagert. Hierdurch ergibt sich ein besonders einfacher Aufbau, der die Herstellungskosten gering hält.A further preferred embodiment of the invention alternatively provides that the bearing device, in particular the bearing arm of the bearing device, is arranged on the side of the edge processing roller facing away from the compacting roller, viewed in the direction of the roller axis of rotation. In this case, in other words, the bearing device, in particular the bearing arm, is in front of the edge processing roller as seen from the outside of the machine along the axis of rotation of the roller arranged. The bearing device is therefore arranged further outside on the machine, transversely to the working direction, than the edge processing roller. Here too, however, the material guiding surface protrudes outwards both over the edge processing roller and over the bearing device. In this embodiment, viewed from the outside of the machine along the axis of rotation of the roller, the elements of the bearing device, in particular the bearing arm of the bearing device, edge processing roller and adjustable roller holding device of the covering edge processing device, follow one another. In other words, viewed in the direction of the roll axis of rotation, the edge processing roll lies between the bearing device, in particular the bearing arm of the bearing device, and the adjustable roll holding device. In particular, the bearing arm in this embodiment is arranged or mounted on a bearing shaft that is passed through the edge processing roller on the side of the edge processing roller that faces away from the compaction roller. This results in a particularly simple structure that keeps production costs low.
Wie vorstehend bereits beschrieben wurde, ist die Kantenbearbeitungsrolle rotierbar an der Belagskantenbearbeitungsvorrichtung und insbesondere an der Rollenhalteeinrichtung befestigt. Die nicht angetriebene Kantenbearbeitungsrolle rollt im Arbeitsbetrieb durch den Bodenkontakt ab und rotiert dabei um eine von einer Lagerwelle gebildete Rollenrotationsachse. Zur Anbindung des Schnittgutabweisers ist es nun bevorzugt vorgesehen, dass die Lagereinrichtung, insbesondere der Lagerarm der Lagereinrichtung, derart an der Belagskantenbearbeitungsvorrichtung gelagert ist, dass sie eine Lagerwelle der Kantenbearbeitungsrolle, insbesondere in Radialrichtung zur Rollenrotationsachse, umläuft. Die Lagereinrichtung beziehungsweise der Lagerarm umgreifen also die Lagerwelle der Kantenbearbeitungsrolle, bevorzugt vollständig, was zu einer verlässlichen Befestigung des Schnittgutabweisers beiträgt.As has already been described above, the edging roller is rotatably attached to the covering edging device and in particular to the roller holding device. During operation, the non-driven edge processing roller rolls through contact with the ground and rotates around a roller axis of rotation formed by a bearing shaft. To connect the clippings deflector, it is now preferred that the bearing device, in particular the bearing arm of the bearing device, is mounted on the covering edge processing device in such a way that it encircles a bearing shaft of the edge processing roller, in particular in the radial direction to the roller axis of rotation. The bearing device or the bearing arm thus surrounds the bearing shaft of the edge processing roller, preferably completely, which contributes to a reliable attachment of the cut material deflector.
Grundsätzlich kann, wie vorstehend beschrieben, die Lagereinrichtung den Schnittgutabweiser und insbesondere die Materialleitfläche beispielsweise durch dessen Schwerkraft schwimmend auf dem Bodenuntergrund halten. Durch Vibrationen oder Unebenheiten kann es allerdings dazu kommen, dass die Materialleitfläche auf dem Boden springt und daher teilweise Schnittgut nicht erfasst. Es ist daher gemäß einer bevorzugten Ausführungsform vorgesehen, dass die Lagereinrichtung ein, insbesondere wenigstens teilweise in Vertikalrichtung nach unten wirkendes, Mittel zur Stellkraftbeaufschlagung des Schnittgutabweisers und insbesondere der Materialleitfläche aufweist. Das Mittel zur Stellkraftbeaufschlagung drückt also den Schnittgutabweiser und insbesondere die Materialleitfläche aktiv vertikal nach unten auf den Bodenuntergrund. Der Schnittgutabweiser und insbesondere die Materialleitfläche werden also in Richtung vertikal nach unten beziehungsweise auf den Bodenuntergrund vorgespannt. Die Materialleitfläche des Schnittgutabweisers läuft daher auch bei Unebenheiten des Bodenuntergrundes oder Vibrationen der Maschine immer dicht am Bodenuntergrund entlang und fördert das Schnittgut daher besonders verlässlich von der Untergrundbelagsschicht nach außen weg. Um den Verschleiß an der Materialleitfläche möglichst minimal zu halten, kann diese eine Rolle oder eine Kufe aufweisen, die derart an der Materialleitfläche angeordnet ist, dass sie zum einen den Bodenuntergrund kontaktiert und insbesondere auch vom Mittel zur Stellkraftbeaufschlagung auf den Bodenuntergrund gedrückt wird, und gleichzeitig die Materialleitfläche geringfügig, beispielsweise um wenige Millimeter, vom Boden beabstandet hält.In principle, as described above, the bearing device can keep the clippings deflector and in particular the material guide surface floating on the ground, for example due to its gravity. However, vibrations or unevenness can cause the material guide surface to jump on the floor and therefore partially miss the clippings. It is therefore provided according to a preferred embodiment that the bearing device has a means, in particular at least partially acting downwards in the vertical direction, for applying a positioning force to the clippings deflector and in particular to the material guide surface. The means for applying the actuating force thus actively presses the clippings deflector and in particular the material guide surface vertically downwards onto the ground. The clippings deflector and in particular the material guiding surface are therefore pretensioned in the direction vertically downwards or towards the ground. The material guide surface of the clippings deflector therefore also runs Unevenness in the ground or vibrations of the machine always close to the ground and therefore conveys the clippings particularly reliably away from the subsurface layer to the outside. In order to keep the wear on the material guide surface as minimal as possible, it can have a roller or a skid, which is arranged on the material guide surface in such a way that it contacts the ground and, in particular, is also pressed onto the ground by the means for applying the actuating force, and at the same time the material guide surface slightly, for example by a few millimeters, keeps spaced from the ground.
Das Mittel zur Stellkraftbeaufschlagung des Schnittgutabweisers kann dabei grundsätzlich verschieden ausgebildet sein, solange der Schnittgutabweiser und insbesondere die Materialleitfläche vertikal nach unten beziehungsweise auf den Boden gedrückt werden. Beispielsweise ist es bevorzugt, dass das Mittel zur Stellkraftbeaufschlagung zwischen dem Lagerarm und der verstellbaren Rollenhalteeinrichtung angeordnet ist. Beispielsweise kann das Mittel zur Stellkraftbeaufschlagung zwischen der Lagereinrichtung beziehungsweise dem Lagerarm und einer an der verstellbaren Rollenhalteeinrichtung angeordneten Lagerwelle, die die Kantenbearbeitungsrolle, insbesondere entlang der Rollenrotationsachse, durchdringt, angeordnet sein. Die Lagerwelle ist mit anderen Worten durch die Kantenbearbeitungsrolle auf die der Verdichtungsrolle abgewandte Seite der Kantenbearbeitungsrolle hindurchführt. Sie kann beispielsweise drehfest zur Rollenhalteeinrichtung ausgebildet sein. Das Mittel zur Stellkraftbeaufschlagung nutzt daher beispielsweise die verstellbare Rollenhalteeinrichtung als Gegenlager und drückt oder zieht ausgehend von diesem den Lagerarm der Lagereinrichtung des Schnittgutabweisers vertikal nach unten. Die Stellkraftbeaufschlagung des Lagerarms bewirkt daher eine Rotation des Lagerarmes um die Verstellachse, die zu einer Absenkung der Materialleitfläche führt, bis diese auf dem Bodenuntergrund aufliegt. Insbesondere kann das Mittel zur Stellkraftbeaufschlagung ebenfalls ein elastisches Stellelement umfassen. Gemäß einer bevorzugten Ausführungsform ist das Mittel zur Stellkraftbeaufschlagung eine Spiralfeder, eine Drehfeder oder eine Gasdruckfeder. Diese können besonders einfach zwischen der verstellbaren Rollenhalteeinrichtung und dem Lagerarm angeordnet werden und den Lagerarm entsprechend mit einer Kraft beaufschlagen. Darüber hinaus sind derartige Federn besonders günstig und verlässlich.The means for applying the actuating force to the clippings deflector can fundamentally be designed differently, as long as the clippings deflector and in particular the material guide surface are pressed vertically downwards or onto the ground. For example, it is preferred that the means for applying the actuating force is arranged between the bearing arm and the adjustable roller holding device. For example, the means for applying the actuating force can be arranged between the bearing device or the bearing arm and a bearing shaft which is arranged on the adjustable roll holding device and penetrates the edge processing roll, in particular along the roll axis of rotation. In other words, the bearing shaft is guided through the edge processing roller onto the side of the edge processing roller that faces away from the compression roller. For example, it can be designed to be non-rotatable with respect to the roller holding device. The means for applying the actuating force therefore uses, for example, the adjustable roller holding device as a counter bearing and, starting from this, pushes or pulls the bearing arm of the bearing device of the clippings deflector vertically downwards. The actuating force applied to the bearing arm therefore causes the bearing arm to rotate about the adjustment axis, which leads to a lowering of the material guide surface until it rests on the ground. In particular, the means for applying the actuating force can also comprise an elastic actuating element. According to a preferred embodiment, the means for applying the actuating force is a spiral spring, a torsion spring or a gas pressure spring. These can be arranged in a particularly simple manner between the adjustable roll holding device and the bearing arm and can apply a corresponding force to the bearing arm. In addition, such springs are particularly cheap and reliable.
Grundsätzlich kann die Materialleitfläche beziehungsweise der Schnittgutabweiser immer so weit verstellt werden, dass die Materialleitfläche mit ihrer unteren Seite auf dem Bodenuntergrund aufliegt und schwimmend auf diesem mitgeführten wird. Dies kann allerdings zu erhöhtem Verschleiß an der Materialleitfläche führen. Eine vorteilhafte Weiterentwicklung der Erfindung sieht daher vor, dass eine Verstellwegbegrenzungseinrichtung vorhanden ist, die den Verstellweg des Schnittgutabweisers relativ zur Kantenbearbeitungsrolle und/oder relativ zur Verdichtungsrolle begrenzt. Hierbei kann es sich beispielsweise um einen Anschlag, der die Bewegung des Schnittgutabweisers und/oder der Materialleitfläche formschlüssig begrenzt, oder ähnliche Elemente handeln. Die Verstellwegbegrenzungseinrichtung kann beispielsweise an der Rollenhalteeinrichtung angeordnet sein. Es kann sich beispielsweise um einen mechanischen Anschlag handeln, der je nach Stellung der Rollenhalteeinrichtung die Materialleitposition der Materialleitfläche festlegt. Dadurch, dass der Anschlag an der Rollenhalteeinrichtung angeordnet ist, kann die Materialleitposition der Materialleitfläche immer so angeordnet sein, dass der vertikal unterste Punkt der Materialleitfläche mit dem vertikal untersten Punkt der Kantenbearbeitungsrolle übereinstimmt. Bei der Verstellwegbegrenzungseinrichtung kann es sich beispielsweise ebenfalls um ein Langloch handelt, in das die Lagereinrichtung, insbesondere der Lagerarm, zumindest teilweise hineinragt. Hierfür kann beispielsweise ein Vorsprung an der Lagereinrichtung vorgesehen sein, der im Langloch geführt wird. Der mechanische Anschlag kann dann beispielsweise vom Ende des Langloches gebildet werden. Ergänzend oder alternativ kann vorgesehen sein, dass die Materialleitposition der Materialleitfläche derart ausgebildet beziehungsweise gewählt ist, dass der Schnittgutabweiser im Arbeitsbetrieb außer Kontakt mit dem Bodenuntergrund bleibt. Die Verstellwegbegrenzungseinrichtung kann in dieser Ausführungsform derart ausgebildet sein, dass der Schnittgutabweiser und insbesondere die Materialleitfläche in Materialleitposition vom Bodenuntergrund beabstandet sind. Die Materialleitfläche wird daher schwebend über dem Bodenuntergrund geführt und ist deshalb erheblich weniger Verschleiß ausgesetzt.In principle, the material guide surface or the clippings deflector can always be adjusted so far that the material guide surface rests with its lower side on the ground and is carried along in a floating manner on it. However, this can lead to increased wear on the material guide surface. An advantageous further development of the invention therefore provides that an adjustment path limiting device is present, which limits the adjustment path of the clippings deflector relative to the edge processing roller and/or relative to the compaction roller. This can be, for example, a stop that positively limits the movement of the clippings deflector and/or the material guide surface, or similar elements. The adjustment path limiting device can be arranged, for example, on the roller holding device. It can be a mechanical stop, for example, which determines the material guide position of the material guide surface depending on the position of the roll holding device. Because the stop is arranged on the roll holding device, the material guiding position of the material guiding surface can always be arranged in such a way that the vertical lowest point of the material guiding surface coincides with the vertical lowest point of the edge processing roller. The adjustment path limiting device can, for example, also be an elongated hole into which the bearing device, in particular the bearing arm, protrudes at least partially. For this purpose, for example, a projection can be provided on the bearing device, which is guided in the slot. The mechanical stop can then be formed, for example, by the end of the elongated hole. In addition or as an alternative, it can be provided that the material guide position of the material guide surface is designed or selected in such a way that the clippings deflector remains out of contact with the ground during operation. In this embodiment, the adjustment path limiting device can be designed in such a way that the clippings deflector and in particular the material guide surface are spaced apart from the ground in the material guide position. The material guide surface is therefore guided floating above the ground and is therefore exposed to significantly less wear.
In einer der vorstehend beschriebenen Ausführungsformen der Erfindung ist der Lagerarm beziehungsweise die Lagereinrichtung entlang der Rollenrotationsachse weiter außen angeordnet als die Kantenbearbeitungsrolle selbst. Aus baulichen Gründen kann der Lagerarm beziehungsweise die Lagereinrichtung dabei ebenfalls entlang der Rollenrotationsachse von der Kantenbearbeitungrolle beabstandet angeordnet sein. Nichtsdestotrotz soll die Materialleitfläche zum einen möglichst bündig mit der Kantenbearbeitungsrolle beginnen und in Richtung der Rollenrotationsachse nach außen bis über die Lagereinrichtung hinweg vorstehen. Zu diesem Zweck ist es bevorzugt vorgesehen, dass sich die Materialleitfläche entlang der Rollenrotationsachse beidseitig von der Lagereinrichtung, insbesondere dem Lagerarm der Lagereinrichtung, weg erstreckt, insbesondere zur Kantenbearbeitungsrolle hin und von dieser weg. Von der Lagereinrichtung aus gesehen erstreckt sich also die Materialleitfläche entlang der Rollenrotationsachse in beide Richtungen, sowohl auf die Kantenbearbeitungsrolle zu als auch von dieser und der Maschinenmitte weg nach außen. Entlang der Rollenrotationsachse erstreckt sich also die Materialleitfläche von der Kantenbearbeitungsrolle bis zur Lagereinrichtung und ragt über diese hinaus zur Außenseite der Maschine hin vor. Auf diese Weise wird auch bei einer außerhalb der Kantenbearbeitungsrolle angeordneten Lagereinrichtung sichergestellt, dass das Schnittgut durch die Materialleitfläche verlässlich von der zurückbleibenden Kante entfernt wird.In one of the above-described embodiments of the invention, the bearing arm or the bearing device is arranged further outwards along the roller axis of rotation than the edge processing roller itself. For structural reasons, the bearing arm or the bearing device can also be arranged at a distance from the edge processing roller along the roller axis of rotation. Nevertheless, the material guide surface should start as flush as possible with the edge processing roller and project outwards in the direction of the roller axis of rotation beyond the bearing device. For this purpose, it is preferably provided that the material guide surface extends along the roller axis of rotation away from the bearing device, in particular the bearing arm of the bearing device, on both sides, in particular towards and away from the edge processing roller. Seen from the bearing device, the material guide surface extends along the axis of rotation of the roller in both directions, both towards the edge processing roller and away from it and away from the center of the machine. The material guide surface thus extends along the axis of rotation of the roller from the edge processing roller to the bearing device and protrudes beyond this to the outside of the machine. In this way, even with a The storage device arranged outside of the edge processing roller ensures that the cuttings are reliably removed from the remaining edge by the material guide surface.
Wie vorstehend beschrieben, kann die Lagereinrichtung und insbesondere der Lagerarm alternativ von außen gesehen entlang der Rollenrotationsachse bevorzugt hinter der Kantenbearbeitungsrolle angeordnet sein. Um die Materialleitfläche bündig mit der außen liegenden Seite der Kantenbearbeitungsrolle beginnen zu lassen, ist es gemäß einer bevorzugten Ausführungsform vorgesehen, dass die Lagereinrichtung zwischen dem Lagerarm und der Materialleitfläche ein sich in Richtung parallel zur Rollenrotationsachse erstreckendes Breitenüberbrückungsstück aufweist, dessen Erstreckung in Richtung zur Rollenrotationsachse im Bereich 80% bis 120% der axialen Erstreckung der Kantenbearbeitungsrolle in Richtung der Rollenrotationsachse entspricht. Die Erstreckung des Breitenüberbrückungsstückes entlang der Rollenrotationsachse entspricht also beispielsweise 80%, 90%, 100%, 110% oder 120% der Dicke der Kantenbearbeitungsrolle. Die Dicke der Kantenbearbeitungsrolle ist ebenfalls in Richtung der Rollenrotationsachse definiert. Das Breitenüberbrückungsstück ist bevorzugt zwischen dem Lagerarm und der Materialleitfläche angeordnet und beabstandet diese voneinander. Auf diese Weise kann der Lagerarm in platzsparender Weise von außen gesehen hinter der Kantenbearbeitungsrolle angeordnet sein und dennoch die Materialleitfläche tragen, die über die Kantenbearbeitungsrolle nach außen vorsteht.As described above, the bearing device and in particular the bearing arm can alternatively be arranged preferably behind the edge processing roller, viewed from the outside, along the axis of rotation of the roller. In order to have the material guide surface start flush with the outer side of the edge processing roller, according to a preferred embodiment it is provided that the bearing device between the bearing arm and the material guide surface has a width bridging piece extending in a direction parallel to the axis of rotation of the roller, the extent of which in the direction of the axis of rotation of the roller is in the Area corresponds to 80% to 120% of the axial extent of the edge processing roller in the direction of the roller axis of rotation. The extent of the width bridging piece along the axis of rotation of the roller thus corresponds, for example, to 80%, 90%, 100%, 110% or 120% of the thickness of the edge processing roller. The thickness of the edging roll is also defined in the direction of the roll axis of rotation. The width bridging piece is preferably arranged between the bearing arm and the material guide surface and spaces them from one another. In this way, the bearing arm can be arranged behind the edging roller in a space-saving manner, as seen from the outside, and still carry the material guide surface, which projects outwards over the edging roller.
Durch die erfindungsgemäße Materialleitfläche wird das Schnittgut von der Untergrundbelagsschicht weg gefördert. Das Schnittgut liegt dann beabstandet von der Untergrundbelagsschicht auf dem Bodenuntergrund, sodass das Schnittgut beispielsweise von einem Radlader aufgesammelt werden kann, ohne dass die Gefahr besteht, dass der Radlader die Untergrundbelagsschicht mit seiner Schaufel beschädigt. Nichtsdestotrotz sind zum Aufsammeln des Schnittgutes ein weiterer Arbeitsschritt und eine weitere Maschine notwendig. Um die Betriebskosten und die notwendigen Arbeiten weiter zu reduzieren, ist es daher bevorzugt vorgesehen, dass die Bodenverdichtungsvorrichtung ebenfalls zum Aufsammeln des Schnittgutes ausgebildet ist. Hierfür ist bevorzugt vorgesehen, dass die Bodenverdichtungsvorrichtung einen in Arbeitsrichtung hinter der Materialleitfläche angeordneten Auffangbehälter aufweist, umfassend eine Aufnahmeöffnung und einen Materialsammelbereich, wobei die Aufnahmeöffnung derart positioniert ist, dass von der in Materialleitposition befindlichen Materialleitfläche geleitetes Material bei einer in Arbeitsrichtung fortgesetzten Bewegung in die Aufnahmeöffnung geleitet wird. Die Materialleitfläche leitet das Schnittgut sowohl von der Untergrundbelagsschicht weg als auch in den Auffangbehälter hinein. Der Auffangbehälter kann beispielsweise ebenfalls einen Tragrahmen und beispielsweise Rollen oder Räder aufweisen, mit denen der Auffangbehälter auf dem Bodenuntergrund führbar ist. Der Auffangbehälter kann allerdings ebenfalls derart ausgebildet sein, dass er vom Bodenuntergrund beabstandet und schwebend über diesen führbar ist. In diesem Fall ist der Auffangbehälter beispielsweise an der Tragstruktur der Bodenverdichtungsvorrichtung befestigt. Zwar muss der Auffangbehälter im Arbeitsbetrieb regelmäßig entleert werden, das Aufsammeln des Schnittgutes muss allerdings nicht in einem zweiten Arbeitsschritt von einer weiteren Maschine durchgeführt werden, wodurch Kosten gespart werden.The clippings are conveyed away from the underground covering layer by the material guiding surface according to the invention. The clippings then lie on the ground at a distance from the sub-surface layer, so that the clippings can be collected by a wheel loader, for example, without the risk of the wheel loader damaging the sub-surface layer with its shovel. Nevertheless, an additional work step and an additional machine are required to collect the clippings. In order to further reduce the operating costs and the necessary work, it is therefore preferably provided that the soil compacting device is also designed to collect the clippings. For this purpose, it is preferably provided that the soil compacting device has a collecting container arranged behind the material guide surface in the working direction, comprising a receiving opening and a material collecting region, the receiving opening being positioned in such a way that material guided by the material guiding surface located in the material guiding position enters the receiving opening when the movement continues in the working direction is conducted. The material guide surface directs the clippings both away from the subsurface layer and into the collection container. The collection container can, for example, also have a support frame and, for example, rollers or wheels with which the collection container can be guided on the ground. However, the collection container can also be designed in such a way that it can be guided at a distance from the ground and floating over it. In this case, the collecting container is fastened, for example, to the support structure of the soil compacting device. Although the collection container must be emptied regularly during operation, the cuttings do not have to be collected in a second work step by another machine, which saves costs.
Die Erfindung betrifft ebenfalls eine Asphaltwalze, insbesondere eine knick- oder schemelgelenkte Tandemwalze oder eine Gummiradwalze, mit einer Bodenverdichtungsvorrichtung gemäß den vorhergehenden Erläuterungen. Die vorstehend genannten Merkmale, Wirkungen und Vorteile der Bodenverdichtungsvorrichtung gelten entsprechend ebenfalls für die erfindungsgemäße Asphaltwalze. Dasselbe gilt für das nachstehend beschriebene erfindungsgemäße Verfahren, mit dem ebenfalls die Lösung der eingangs gestellten Aufgabe gelingt.The invention also relates to an asphalt roller, in particular an articulated or pivot-steered tandem roller or a rubber-wheeled roller, with a soil compacting device according to the explanations above. The features, effects and advantages of the soil compacting device mentioned above also apply correspondingly to the asphalt roller according to the invention. The same applies to the method according to the invention described below, with which the object at the outset can also be achieved.
Die Erfindung betrifft ebenfalls ein Verfahren zum Betrieb einer Bodenverdichtungsvorrichtung, insbesondere einer Bodenverdichtungsvorrichtung gemäß den vorstehenden Ausführungen, mit einer an einer Tragstruktur rotierbar gelagerten Verdichtungsrolle und einer an der Tragstruktur gelagerten Belagskantenbearbeitungsvorrichtung, umfassend eine Kantenbearbeitungsrolle, einen Verstellarm sowie einen Verstellantrieb. Wie bereits erläutert, ist die Kantenbearbeitungsrolle aus einer Passivposition in eine Kantenbearbeitungsposition relativ zur Außenmantelfläche der Verdichtungsrolle durch einen Verstellantrieb angetrieben verstellbar. Das erfindungsgemäße Verfahren weist wenigstens die folgenden Schritte auf: Verstellen der Belagskantenbearbeitungsvorrichtung aus der Passivposition in die Kantenbearbeitungsposition relativ zur Außenmantelfläche der Verdichtungsrolle und ein gleichzeitiges, selbsttätiges Verstellen eines Schnittgutabweisers relativ zur Belagskantenbearbeitungsvorrichtung, insbesondere in die Materialleitposition. Das erfindungsgemäße Verfahren zeichnet sich also dadurch aus, dass der Schnittgutabweiser und insbesondere dessen Materialleitfläche automatisch und ausgelöst durch die Verstellung der Kantenbearbeitungsrolle in die Kantenbearbeitungsposition in die Materialleitposition verstellt wird. Insbesondere laufen beide Verstellungen, sowohl der Kantenbearbeitungsrolle als auch des Schnittgutabweisers, gleichzeitig ab, insbesondere gekoppelt beziehungsweise zwangsgekoppelt. Es ist daher erfindungsgemäß lediglich notwendig, dass der Bediener die Verstellung der Bodenverdichtungsvorrichtung in die Arbeitsposition an einem Steuergerät aktiviert. Er muss daher nicht in einem separaten Arbeitsschritt den Schnittgutabweiser separat von der Kantenbearbeitungsrolle justieren.The invention also relates to a method for operating a soil compacting device, in particular a soil compacting device according to the above statements, with a compacting roller rotatably mounted on a support structure and a covering edge processing device mounted on the support structure, comprising an edge processing roller, an adjustment arm and an adjustment drive. As already explained, the edge processing roller can be adjusted from a passive position into an edge processing position relative to the outer lateral surface of the compression roller, driven by an adjustment drive. The method according to the invention has at least the following steps: Adjusting the base edge processing device from the passive position to the edge processing position relative to the outer lateral surface of the compaction roller and a simultaneous, automatic adjustment of a clippings deflector relative to the base edge processing device, in particular into the material guide position. The method according to the invention is thus characterized in that the clippings deflector and in particular its material guide surface is adjusted automatically and triggered by the adjustment of the edge processing roller into the edge processing position in the material guide position. In particular, both adjustments, both the edge processing roller and the cut material deflector, run simultaneously, in particular coupled or positively coupled. It is therefore only necessary according to the invention for the operator to activate the adjustment of the soil compacting device into the working position on a control device. He therefore does not have to adjust the clippings deflector separately from the edge processing roller in a separate work step.
Das erfindungsgemäße Verfahren sieht vor, dass das Verstellen des Schnittgutabweisers relativ zur Belagskantenbearbeitungsvorrichtung in Abhängigkeit von einer Stellposition des Verstellarms der Rollenhalteeinrichtung, der Schwerkraft oder einem Wechselwirken des Schnittgutabweisers mit dem Bodenuntergrund erfolgt. Zur Vermeidung von Wiederholungen wird auf die vorstehenden Ausführungen Bezug genommen.The method according to the invention provides that the adjustment of the clippings deflector relative to the covering edge processing device as a function of a Adjusting position of the adjusting arm of the roller holding device, gravity or an interaction of the cutting material deflector takes place with the ground. To avoid repetition, reference is made to the above statements.
Nachfolgend wird die Erfindung anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert. Es zeigen schematisch:
- Fig. 1:
- eine Seitenansicht einer Asphaltwalze;
- Fig. 2:
- eine vergrößerte Seitenansicht einer Belagskantenbearbeitungsvorrichtung;
- Fig. 3:
- eine Draufsicht auf eine Belagskantenbearbeitungsvorrichtung;
- Fig. 4:
- eine Seitenansicht einer Belagskantenbearbeitungsvorrichtung ohne Kantenbearbeitungsrolle und Materialleitfläche aus der durch die gestrichelte Linie mit den zwei Pfeilen in
angedeuteten Perspektive;Figur 3 - Fig. 5:
- eine Seitenansicht einer Belagskantenbearbeitungsvorrichtung in die Untergrundbelagsschicht teilweise durchdringender Arbeitsposition;
- Fig. 6:
- eine Seitenansicht einer Belagskantenbearbeitungsvorrichtung in die Untergrundbelagsschicht vollständig durchdringender Arbeitsposition;
- Fig. 7:
- eine Seitenansicht einer alternativen Ausführungsform einer Belagskantenbearbeitungsvorrichtung in die Untergrundbelagsschicht vollständig durchdringender Arbeitsposition;
- Fig. 8:
- eine Draufsicht auf die
Belagskantenbearbeitungsvorrichtung gemäß Figur 7 ; und - Fig. 9:
- ein Ablaufdiagramm des Verfahrens.
- Figure 1:
- a side view of an asphalt roller;
- Figure 2:
- an enlarged side view of a covering edge processing device;
- Figure 3:
- a plan view of a covering edge processing device;
- Figure 4:
- a side view of a covering edging device without edging roller and material guide surface from the broken line with the two arrows in
figure 3 implied perspective; - Figure 5:
- a side view of a covering edging device in the subsurface covering layer partially penetrating working position;
- Figure 6:
- a side view of a covering edging device in the subsurface covering layer completely penetrating working position;
- Figure 7:
- Figure 14 is a side view of an alternative embodiment of a pavement edging device in the operative position fully penetrating the subgrade pavement layer;
- Figure 8:
- a top view of the covering edge processing device according to FIG
figure 7 ; and - Figure 9:
- a flowchart of the process.
Gleiche beziehungsweise gleich wirkende Bauteile sind in den Figuren mit den gleichen Bezugszeichen gekennzeichnet. Sich wiederholende Bauteile sind nicht in jeder Figur gesondert bezeichnet.Components that are the same or have the same effect are identified in the figures with the same reference symbols. Repeating components are not separately identified in each figure.
Die Belagskantenbearbeitungsvorrichtung 7 ist in
In
Die Belagskantenbearbeitungsvorrichtung 7 ist in
Die
In der Materialleitposition befindet sich die Materialleitfläche 17 derart in Arbeitsrichtung a hinter der Kantenbearbeitungsrolle 12, dass sie das Schnittgut von der Kantenbearbeitungsrolle 12 quer zur Arbeitsrichtung a nach außen fördert. Hierfür kann die Materialleitfläche 17 mit ihrer Unterkante schwimmend auf den Bodenuntergrund gedrückt werden, beispielsweise durch die das Mittel zur Stellkraftbeaufschlagung 21 darstellende Gasdruckfeder. Die Materialleitfläche 17 wird dann mit durchgehendem Bodenkontakt mitgeführt. Um Verschleiß an der Materialleitfläche 17 zu vermeiden, ist es allerdings ebenfalls möglich, diese geringfügig vom Bodenuntergrund beabstandet, also über dem Bodenuntergrund schwebend, mitzuführen. Hierfür kann eine Verstellwegbegrenzungseinrichtung 22 vorgesehen sein, wie sie beispielsweise in
Kerngedanke der vorliegenden Erfindung ist es, dass der Schnittgutabweiser 16 bei einer Verstellung der Kantenbearbeitungsrolle 12 über die Rollenhalteeinrichtung 13 automatisch ebenfalls verstellt wird. Dies geht beispielsweise aus den
Die
Claims (14)
- A ground compaction apparatus (10) for compacting a subsoil cover layer (8),- with at least one compaction roller (5) which is mounted on a support structure (6) of the ground compaction apparatus (10) for rotation about a horizontal traveling rotation axis (11) extending transversely to a working direction (a), and which comprises a cylindrical external surface rolling on the underlying ground during compaction operation- with a cover edge processing apparatus (7) arranged on the support structure (6), comprising an edge processing roller (12), an adjustable roller holding device (13), in particular an adjustment arm, as well as an adjustment drive (14), wherein the edge processing roller (12) is mounted on the adjustable roller holding device (13) for rotation about a roller rotation axis (15), and wherein the adjustable roller holding device (13) together with the edge processing roller (12) is mounted on the support structure (6) such that it can be adjusted from a passive position into an edge processing position relative to the external surface of the compaction roller (5) driven by the adjustment drive (14),- and with a cut material deflector (16) with at least one material guide surface (17) provided to push cut cover material produced during working operation of the cover edge processing apparatus (7) away from the subsoil cover layer (8) in the direction of the traveling rotation axis (11) while passing over the subsoil cover layer (8),characterized in that
the cut material deflector (16) is mounted on the cover edge processing apparatus (7) with the aid of a mounting device (18), the mounting device (18) being configured such that the relative position of the at least one material guide surface (17) of the cut material deflector (16) with respect to the adjustable roller holding device (13) of the cover edge processing apparatus (7) can be changed automatically, and the mounting device (18) for mounting the cut material deflector (16) on the cover edge processing apparatus (7) has at least one of the following features:- it is configured such that it adjusts the relative position of the at least one material guide surface (17) with respect to the adjustable roller holding device (13) depending on the adjustment position of the adjustable roller holding device (13) with respect to the support structure (6);- it is configured such that it adjusts the relative position of the at least one material guide surface (17) with respect to the adjustable roller holding device (13) depending on gravity;- it is configured such that it adjusts the relative position of the at least one material guide surface (17) with respect to the adjustable roller holding device (13) through interaction with an underlying ground. - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
the cut material deflector (16) is adjustably mounted directly on the cover edge processing apparatus (7). - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
the mounting device (18) of the cut material deflector (16) has either a mounting arm which can be rotated about an adjustment axis (19) relative to the adjustable roller holding device (13) of the cover edge processing apparatus (7) and/or a mounting arm which is displaceable, in particular linearly, along an adjustment curve relative to the adjustable roller holding device (13) of the edge processing apparatus (7). - The ground compaction apparatus (10) according to claim 3,
characterized in that
the mounting arm of the mounting device (18) of the cut material deflector (16) is mounted coaxially to the roller rotation axis (15) of the edge processing roller (12) for rotation relative to the adjustable roller holding device (13). - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
the mounting device (18), in particular the mounting arm of the mounting device, is arranged at least partially, as seen in the direction of the roller rotation axis (15), between the edge processing roller (12) and the adjustable roller holding device (13) of the cover edge processing apparatus (7) or that the mounting device (18), in particular the mounting arm of the mounting device, is arranged, as seen in the direction of the roller rotation axis (15), on the side of the edge processing roller (12) facing away from the compaction roller (5). - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
the mounting device (18), in particular the mounting arm of the mounting device (18), is mounted on the cover edge processing apparatus (7) such that it revolves around a support shaft (20) of the edge processing roller (12), in particular in the radial direction with respect to the roller rotation axis (15). - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
the mounting device (18) has a means (21), in particular acting at least partially downward in the vertical direction, for applying actuating force to the cut material deflector (16). - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
the means for applying actuating force (21) to the cut material deflector (16) has at least one of the following features:- it is arranged between the mounting arm and the adjustable roller holding device (13);- it is arranged between the mounting arm and the support shaft (20) arranged on the roller holding device (13), the support shaft (20) being guided in particular through the edge processing roller (12) to the side of the edge processing roller (12) facing away from the compaction roller (5);- it is a gas pressure spring, a torsion spring or a coil spring;- it comprises an elastic actuation element. - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
an adjustment path limiting device (22) is provided which limits the adjustment path of the cut material deflector (16) relative to the edge processing roller (12) and/or relative to the compaction roller (5). - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
the material guide surface (17) extends along the roller rotation axis (15) on both sides away from the mounting device (18), in particular toward and away from the edge processing roller (12). - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
the mounting device (18) has, between the mounting arm and the material guide surface (17), a width bridging member (23) extending in the direction parallel to the roller rotation axis (15) and having an extension in the direction of the roller rotation axis (15) corresponding to a range of 80 % to 120 % of the axial extension of the edge processing roller (12) in the direction of the roller rotation axis (15). - The ground compaction apparatus (10) according to any one of the preceding claims, characterized in that
it has a collecting container (24) arranged behind the material guide surface (17) in the working direction (a), comprising a receiving opening (25) and a material collecting region (26), the receiving opening (25) being positioned such that material guided by the material guide surface (17) in the material guiding position is guided into the receiving opening (25) in the case of continued movement in the working direction. - An asphalt roller (1), in particular an articulated-steered or pivot-steered tandem roller, with a ground compaction apparatus (10) according to any one of the preceding claims.
- A method (27) for operating a ground compaction apparatus (10) according to any one of claims 1 to 12, with a compaction roller (5) rotatably mounted on a support structure (6) and a cover edge processing apparatus (7) mounted on the support structure (6), comprising an edge processing roller (12), an adjustment arm as well as an adjustment drive (14), the edge processing roller (12) being adjustable, driven from a passive position into an edge processing position relative to the external surface of the compaction roller (5) by the adjustment drive (14), the method (27) comprising at least the steps ofa) adjusting (28) the cover edge processing apparatus (7) from the passive position into the edge processing position relative to the external surface of the compaction roller (5),b) simultaneously to step a), automatically adjusting (29), a cut material deflector (16) relative to the cover edge processing apparatus (7), wherein the adjusting (29) of the cut material deflector (16) relative to the cover edge processing apparatus (7) is performed depending on- an adjustment position of the adjustment arm;- gravity; or- interaction of the cut material deflector (16) with the underlying ground.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102020003682.1A DE102020003682A1 (en) | 2020-06-19 | 2020-06-19 | SOIL COMPACTION DEVICE FOR COMPACTING A SUBSTRATE LAYER, ASPHALT ROLLER AND METHOD FOR OPERATING A SOIL COMPACTION DEVICE |
Publications (2)
Publication Number | Publication Date |
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EP3926096A1 EP3926096A1 (en) | 2021-12-22 |
EP3926096B1 true EP3926096B1 (en) | 2023-04-19 |
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EP21177503.6A Active EP3926096B1 (en) | 2020-06-19 | 2021-06-02 | Soil compacting device for compacting a subgrade layer, asphalt roller and method of operating a soil compacting device |
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US (1) | US11781273B2 (en) |
EP (1) | EP3926096B1 (en) |
CN (1) | CN113818312B (en) |
DE (1) | DE102020003682A1 (en) |
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DE102022211154A1 (en) | 2022-10-20 | 2024-04-25 | Bomag Gmbh | TANDEM ROLLER WITH IMPROVED VISIBILITY FOR THE OPERATOR AND WORK TRAIN WITH SUCH TANDEM ROLLERS |
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CN106758640B (en) * | 2016-11-09 | 2020-10-20 | 中铁一局集团天津建设工程有限公司 | Municipal road and construction method thereof |
DE102017011146A1 (en) | 2017-12-01 | 2019-06-06 | Bomag Gmbh | Rubber wheel roller for compacting a floor and method for controlling a sprinkler system of a rubber wheel roller |
DE102018007825A1 (en) | 2018-10-04 | 2020-04-09 | Bomag Gmbh | Method for controlling a soil compaction machine and soil compaction machine |
US10662590B1 (en) * | 2019-01-08 | 2020-05-26 | Caterpillar Paving Products Inc. | Control system and method for controlling operation of an edge forming tool of a compactor |
US11377802B2 (en) * | 2019-11-08 | 2022-07-05 | Caterpillar Paving Products Inc. | Compaction machine |
US20230115734A1 (en) * | 2021-10-12 | 2023-04-13 | Caterpillar Paving Products Inc. | Stepped deflector for a screed assembly |
-
2020
- 2020-06-19 DE DE102020003682.1A patent/DE102020003682A1/en active Pending
-
2021
- 2021-06-02 EP EP21177503.6A patent/EP3926096B1/en active Active
- 2021-06-07 US US17/340,440 patent/US11781273B2/en active Active
- 2021-06-18 CN CN202110683832.8A patent/CN113818312B/en active Active
Also Published As
Publication number | Publication date |
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CN113818312A (en) | 2021-12-21 |
US11781273B2 (en) | 2023-10-10 |
US20210395958A1 (en) | 2021-12-23 |
DE102020003682A1 (en) | 2021-12-23 |
CN113818312B (en) | 2023-01-03 |
EP3926096A1 (en) | 2021-12-22 |
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