EP3926096A1 - Soil compacting device for compacting a subgrade layer, asphalt roller and method of operating a soil compacting device - Google Patents

Abstract

The invention relates to a soil compacting device (10) for compacting an underground covering layer (8) with at least one compacting roller (5), a covering edge processing device (7) comprising an edge processing roller (12) and with a cuttings deflector (16), the cuttings deflector (16) using a Bearing device (18) is mounted on the base edge processing device (7), the bearing device (18) being designed in such a way that the relative position of the at least one material guide surface (17) of the cuttings deflector (16) in relation to the adjustable roller holding device (13) of the base edge processing device (7) can be changed automatically. The invention also relates to an asphalt roller (1) with such a soil compacting device (10) and a method (27) for operating such a soil compacting device (10).

Description

The invention relates to a soil compacting device for compacting a subsoil layer, an asphalt roller and a method for operating a soil compacting device.

Soil compacting devices are often used for compacting a subsoil layer, for example an asphalt layer, in road construction or similar applications. What these soil compaction devices have in common is that they comprise a compaction roller 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. This has a cylindrical outer jacket surface that rolls on the subsoil during compaction operation. Such a compression roller can be, for example, a rubber wheel for rubber-wheeled rollers or a so-called bandage, for example made of a steel material and / or a composite material. The latter typically comprises a hollow cylinder-shaped drum jacket, the often smooth outer jacket surface of which is used for soil compaction. In road construction in particular, it is common for such soil compaction devices to follow a road paver for subsequent compaction and further post-processing of the laid out asphalt mat. Typically, these are self-propelled soil compaction devices, often with two or more such compaction rollers, in the form of rollers, in particular bolster 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 application 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 paver in front. The present invention relates to the post-processing of the edge areas of the asphalt mat applied with the aid of a pavement edge processing device arranged on the supporting structure. Such pavement edge processing devices serve to achieve a shaping and / or cutting processing of the edge of the asphalt mat when the asphalt mat is passed over by the soil compacting device. Specifically, a distinction can be made between so-called edge trimmers and edge pressing devices, which, however, both have a basic structure that is quite comparable to one another. Essential elements of such a covering edge machining device are an edge machining roller, 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 much smaller than the diameter of the compression roller.

The edge processing roller also protrudes at least partially in the direction of the travel axis of rotation over the end face of the compression roller (drum) at least in one edge processing position, in order to be able to cut and / or press the ground next to the compression roller, in particular directly adjacent to this in the direction of the travel axis of rotation, during operation . For this purpose, the edge processing roller on the adjustable roller holding device can be adjusted between a passive position or a transport position that is free of contact with the ground and the edge processing position relative to the outer surface of the compaction roller. The passive position denotes a position in which the edge processing roller is free of protrusion in the radial direction to the travel axis of rotation of the compaction roller compared to the vertically lower vertex of the compaction roller cross-section and is therefore usually free of contact with the subsurface layer. The edge processing position, on the other hand, denotes a setting position of the edge processing roller, in which it is positioned at least flush with the vertically lower vertex of the compression roller or, preferably, even protrudes to a defined extent in the vertical direction downwards over the outer circumferential surface of the compression roller, in particular with respect to the lower one Vertex of the outer circumferential surface of the compaction roller. It is important here that there is usually not just one edge processing position, but rather the edge processing position is variable in a defined area in order, for example, to allow adaptation measures to the respective thickness of the subsurface covering layer. In the edge processing position, the edge processing roller thus cuts into the sub-floor covering layer and / or presses it against the side area in order to obtain a straight and uniformly shaped sub-floor covering layer edge.

So that the driver of such a soil compacting device does not have to be manually active every time the setting position of the surface edge processing roller changes between the passive position and the edge processing position, the surface edge processing roller is preferably adjustably mounted with the aid of an adjustment drive on the roller holding device, in particular an adjustment arm. Such an adjustment drive can be, for example, a hydraulic cylinder-piston unit.

Examples of pavement edge processing devices are for example in 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.

Users of such pavement edge processing devices supplement pavement edge processing devices available ex works with a plow-like cuttings deflector with at least one material guiding surface, which is provided to push pavement cuttings occurring during operation of the pavement edge processing device away from the subsoil layer in the direction of the rotation axis when passing the subsoil layer. With the help of such a clippings deflector, the subsurface covering material cut from the subsurface covering layer is to be pushed aside from the subsurface covering layer in order to reduce reworking measures on the one hand and to make it easier to collect the cut-off clippings on the other. Such a clippings deflector is for example in the DE 91 11 398 U1 described.

The known clippings deflectors, however, have the disadvantage that they require manual adjustment for precise operation, which is perceived by the user as uncomfortable and therefore disadvantageous. In addition, this often leads to inadequate work results, so that overall there is a need for optimization.

Based on 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 also with regard to the adaptation to different sub-floor layer thicknesses.

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 given in the dependent claims.

A soil compacting device of the generic type in the present case for compacting a subsoil layer has at least one compacting roller mounted on a supporting structure of the soil compacting device so that it can rotate about a horizontal axis of rotation running transversely to a working direction and which comprises a cylindrical outer surface that rolls on the subsoil during compaction. The soil compacting device makes contact with the soil to be compacted via the rolling movement. This can be done statically or dynamically with the aid of known vibration exciters. The soil compacting device further comprises a pavement edge processing device arranged on the supporting structure. The pavement edge processing device serves to process the pavement edge when it passes the subsoil layer through the soil compacting device, for example to cut and / or press it on. For this purpose, the lining edge processing device comprises in a known manner an edge processing roller, an adjustable roller holding device, in particular an adjustment arm, and an adjustment drive, the edge processing roller being mounted on the adjustable roller holding device such that it can rotate about a roller axis of rotation. The edge processing roller is usually not driven and is arranged freely rotatable on the roller holding device. It can have a central bearing axis and a machining surface that encircles the bearing axis, in particular that runs obliquely in the radial direction. The adjustable roller holding device is designed in such a way that, together with the edge processing roller, it is mounted on the support structure so as to be adjustable from a passive position into an edge processing position relative to the outer circumferential surface of the compaction 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 mounted on one side so as to be adjustable 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 adjusting arm can be pivoted relative to the support structure about a pivot axis between the passive position and an edge processing position. The pivot axis can in particular run parallel to the travel axis of rotation of the compaction roller.

Another generic element of the soil compacting device according to the invention is the clippings deflector, the task of which is to push the clippings separated from the subsoil layer further to the side away from the subsoil layer in order to facilitate subsequent collection or the like. For this purpose, the clippings deflector comprises at least one material guide surface, which is provided for the purpose of removing clippings that occur when the covering edge processing device is in operation when they pass through the subsurface covering layer to move away from the sub-base layer in the direction of the axis of rotation of the vehicle. The material guide surface is therefore functionally comparable to a plow element and thus comprises a surface that is at least partially inclined to the axis of rotation and pushes the clippings aside when passing the soil compacting device in the working direction from the edge of the subsoil layer.

It is now essential that the clippings deflector is not positioned statically fixed or exclusively manually adjustable on, for example, the support structure of the soil compacting device, but rather it is mounted on the pavement edge processing device with the aid of a bearing device. Functionally, an adjustment of the covering edge processing device relative to the support structure also results in a change in the relative position of the clippings deflector relative to the support structure. However, the storage device of the clippings deflector on the covering edge processing device is designed 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 covering edge processing device and in particular to the roll holding device, in particular automatically, can be changed. Automatic is to be understood to mean that no separate manual adjustment by the operator is required 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 adapt it in an optimized manner to the current operating situation, in particular in the edge processing position of the edge processing roller. The relative position of the clippings deflector is adapted in such a way that the side of the clippings deflector facing the floor and in particular the material guide surface in the edge machining position of the edge machining roller is at the same height, for example in the same horizontal plane, as the lower vertex of the edge machining roller. The vertically lowest point of the edge processing roller is understood as the lower vertex 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.

With regard to the specific design of the automatic adaptation, there are various preferred options. On the one hand, it is possible that the bearing device for mounting the clippings deflector is designed in such a way that it adjusts the relative position of the at least one material guide surface with respect to the adjustable roll holding device as a function of the position of the adjustable roll holding device against the support structure. This preferred embodiment can thus comprise a coupling means which, in the mode of operation of a gear, changes the position of the roller holding device into an adjustment movement of the material guide surface of the Cut material deflector implemented relative to the roll holding device. The adjustment movement of the material guide surface of the cut material 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 forced coupling of the bearing device of the clippings deflector and the adjustable roller holding device, for example via the formation of a link gear or the like.

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 with respect to the adjustable roller holding device as a function of gravity or as a function of the weight. For this purpose, it can be provided, for example, that the storage 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 lower the clippings deflector and in particular the material guide surface vertically down until the clippings deflector and in particular the material guide surface lie on the ground. For this purpose, for example, a rotationally 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 ground subsurface can be, for example, a pavement layer or the subsoil or soil present under the pavement layer. For example, it is an asphalt layer and / or the subsurface lying under the asphalt layer. This embodiment is particularly simple and inexpensive to manufacture.

In addition or as an alternative, a preferred embodiment provides for the bearing device to be designed in such a way that it adjusts the relative position of the at least one material guide surface with respect to the adjustable roller holding device by interacting with a substrate. For example, it can be provided that the clippings deflector or the material guide surface are pressed vertically upwards against their own weight by contact with the ground. The storage device is then specially designed in such a way that it permits and thus enables such movements of the clippings deflector or the material guide surface which are induced by the contact with the substrate.

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, which has the soil compacting device. To in particular To be able to better control the relative position of the clippings deflector to the roll holding device or the edge processing roller, however, 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 the latter is adjusted in its position, for example with respect to the support structure. According to the invention, with such a position adjustment of the facing edge processing device, the relative position of the clippings deflector or the material guide surface with respect to the adjustable roller holding device of the facing edge processing device is changed automatically or 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.

According to a preferred embodiment, the bearing device of the clippings deflector has a bearing arm. The bearing arm is connected on the one hand to the surface 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 roller holding device of the edge processing device. The bearing arm is thus designed as a swivel arm which can be swiveled about its connection point on the facing edge processing device. This means that the material guide surface can also be pivoted about the connection point of the bearing arm to 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, relative to the adjustable roller holding device of the edge processing device along an adjusting curve. The corresponding adjusting curve of the bearing arm is implemented, for example, by a link guide. The frame containing the link guide can, for example, be attached to the facing edge processing device. 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 with respect to the roll holding device.

The pivotable bearing arm of the bearing device can in principle be pivotably mounted at any point on the facing edge machining 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 clippings deflector is rotatable 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 facing edge processing device is chosen such that the adjustment axis around which the bearing arm can be pivoted is identical to the roller rotation axis around which the edge processing roller is rotatably supported during operation. In this way, it is ensured in a simple manner that the material guide surface assumes the same distance from the edge processing roller in every working position and therefore always optimal working results can be achieved.

It is fundamentally 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 roller axis of rotation. In other words, the edge processing roller is arranged transversely to the working direction further outside on the machine than the storage device. The material guide surface, on the other hand, also protrudes outwards over the edge processing roller. In this way it is ensured that clippings cut off by the edge processing roller are actually picked up by the material guide surface and moved away from the subsurface covering layer. In addition, it is preferred that the bearing device, in particular the bearing arm, is arranged along the roller axis of rotation 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 roller is not increased by the bearing 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 facing edge processing device follow one another as seen from the outside of the machine along the roller rotation axis. In other words, it is provided that the bearing device, in particular the bearing arm of the bearing device, is arranged at least partially, viewed in the direction of the roller axis of rotation, between the edge processing roller and the adjustable roller holding device of the facing edge processing device. The roll axis of rotation 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.

Another preferred embodiment of the invention provides alternatively that the bearing device, in particular the bearing arm of the bearing device, viewed in the direction of the roller rotation axis, is arranged on the side of the edging roller facing away from the compression roller. In this case, in other words, the bearing device, in particular the bearing arm, is in front of the edging roller, viewed from the outside of the machine along the roller axis of rotation arranged. The storage device is thus arranged transversely to the working direction further outside on the machine than the edge processing roller. Here too, however, the material guide surface protrudes outwards both over the edge processing roller and over the bearing device. In this embodiment, viewed from the outside of the machine, the elements of the bearing device, in particular the bearing arm of the bearing device, the edge processing roller and the adjustable roller holding device of the facing edge processing device follow one another along the roller axis of rotation. In other words, viewed in the direction of the roll axis of rotation, the edge processing roller lies between the bearing device, in particular the bearing arm of the bearing device, and the adjustable roller holding device. In particular, the bearing arm in this embodiment is arranged or supported on a bearing shaft passed through the edge processing roller onto the side of the edge processing roller facing away from the compression roller. This results in a particularly simple structure that keeps the manufacturing costs low.

As has already been described above, the edge-processing roller is rotatably attached to the covering edge-processing device and in particular to the roller holding device. The non-driven edge processing roller rolls when it is in 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 preferably provided that the bearing device, in particular the bearing arm of the bearing device, is mounted on the facing edge processing device in such a way that it rotates around 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 therefore encompass the bearing shaft of the edge processing roller, preferably completely, which contributes to a reliable fastening of the clippings deflector.

In principle, as described above, the storage device can hold the clippings deflector and in particular the material guide surface, for example by its gravity, floating on the ground. However, vibrations or unevenness can lead to the material guide surface jumping on the floor and therefore partially not picking up clippings. It is therefore provided according to a preferred embodiment that the bearing device has a means, in particular acting at least partially in the vertical direction downwards, for applying actuating force to the clippings deflector and in particular to the material guide surface. The means for applying the actuating force therefore actively presses the clippings deflector and in particular the material guide surface vertically downwards onto the substrate. The clippings deflector and, in particular, the material guiding surface are therefore biased in a vertically downward direction or onto the substrate. The material guide surface of the clippings deflector therefore also runs Unevenness of the ground or vibrations of the machine always close to the ground and therefore transports the clippings particularly reliably away from the underground 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 runner which is arranged on the material guide surface in such a way that it firstly contacts the substrate and, in particular, is also pressed onto the floor substrate by the means for applying the actuating force, and at the same time keeps the material guide surface slightly, for example by a few millimeters, spaced from the ground.

The means for applying the actuating force to the clippings deflector can in principle be designed differently as long as the clippings deflector and in particular the material guide surface are pressed vertically downwards or onto the floor. 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 roller holding device and penetrates the edge processing roller, in particular along the roller axis of rotation. In other words, the bearing shaft is passed through the edge processing roller onto the side of the edge processing roller facing away from the compression roller. It can, for example, be designed to be non-rotatable with respect to the roll holding device. The means for applying the actuating force therefore uses, for example, the adjustable roller holding device as a counter bearing and, proceeding therefrom, presses 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 particularly easily between the adjustable roller holding device and the bearing arm and apply a corresponding force to the bearing arm. In addition, springs of this type are particularly cheap and reliable.

In principle, the material guide surface or the clippings deflector can always be adjusted so far that the lower side of the material guide surface rests on the substrate and is carried along on it while floating. However, this can lead to increased wear on the material guide surface. An advantageous further development of the invention therefore provides that there is an adjustment path limiting device which limits the adjustment path of the clippings deflector relative to the edge processing roller and / or relative to the compression roller. This can be, for example, a stop that limits the movement of the clippings deflector and / or the material guide surface in a form-fitting manner, or similar elements. The adjustment path limiting device can be arranged, for example, on the roller holding device. For example, it can be a mechanical stop which, depending on the position of the roll holding device, defines the material guide position of the material guide surface. Because the stop is arranged on the roll holding device, the material guide position of the material guide surface can always be arranged in such a way that the vertically lowest point of the material guide surface coincides with the vertically lowest point of the edge processing roller. The adjustment path limiting device can also be, for example, 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 elongated hole. The mechanical stop can then be formed, for example, from 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 surface 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 one of the embodiments of the invention described above, the bearing arm or the bearing device is arranged further outward along the roller rotation axis than the edge processing roller itself. For structural reasons, the bearing arm or the bearing device can also be spaced along the roller rotation axis from the edge processing roller. Nonetheless, the material guide surface should on the one hand begin as flush as possible with the edge processing roller and protrude outward in the direction of the roller axis of rotation to beyond the bearing device. For this purpose, it is preferably provided that the material guide surface extends away from the bearing device, in particular the bearing arm of the bearing device, on both sides along the roller rotation axis, in particular towards and away from the edge processing roller. Seen from the bearing device, the material guide surface extends along the roll axis of rotation in both directions, both towards the edge processing roll and outwards away from it and the center of the machine. The material guide surface extends along the roll axis of rotation from the edge processing roll to the bearing device and protrudes beyond this to the outside of the machine. This is also the case with a outside of the edge processing roller arranged storage device ensures that the cut material is reliably removed from the remaining edge by the material guide surface.

As described above, the bearing device and in particular the bearing arm can alternatively be arranged, viewed from the outside, along the roller axis of rotation, preferably behind the edge processing roller. In order to have the material guide surface begin flush with the outer side of the edge processing roller, it is provided according to a preferred embodiment that the bearing device between the bearing arm and the material guide surface has a width bridging piece extending in the direction parallel to the roller axis of rotation, the extent of which extends in the direction of the roller axis of rotation in Range corresponds to 80% to 120% of the axial extent of the edge processing roller in the direction of the roller axis of rotation. The extension of the width bridging piece along the roll axis of rotation thus corresponds, for example, to 80%, 90%, 100%, 110% or 120% of the thickness of the edge processing roll. The thickness of the edging roller is also defined in the direction of the roller rotation axis. The width bridging piece is preferably arranged between the bearing arm and the material guide surface and spaced them apart from one another. In this way, the bearing arm can be arranged in a space-saving manner behind the edging roller, seen from the outside, and still carry the material guide surface, which protrudes outward over the edging roller.

The material to be cut is conveyed away from the substrate layer by the material guide surface according to the invention. The cuttings then lie on the ground at a distance from the subsoil layer, so that the cuttings can be picked up by a wheel loader, for example, without the risk of the wheel loader damaging the subsurface layer with its shovel. Nonetheless, a further work step and a further machine are necessary 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 cuttings. For this purpose, it is preferably provided that the soil compacting device has a collecting container arranged in the working direction behind the material guiding surface, comprising a receiving opening and a material collecting area, the receiving opening being positioned such that material guided from the material guiding surface located in the material guiding position into the receiving opening when it continues to move in the working direction is directed. The material guide surface guides the clippings away from the subsoil layer as well as into the collecting container. The collecting container can, for example, also have a support frame and, for example, rollers or wheels with which the collecting container can be guided on the ground. The collecting container can, however, also be designed in such a way that it is spaced from the ground and can be guided over it while floating. In this case, the collecting container is attached, for example, to the support structure of the soil compacting device. Although the collecting container has to be emptied regularly during work, the collection of the clippings does not have to be carried out in a second work step by another machine, which saves costs.

The invention also relates to an asphalt roller, in particular an articulated or pivot-steered tandem roller or a rubber-tyred roller, with a soil compacting device as described above. The above-mentioned features, effects and advantages of the soil compacting device also apply accordingly to the asphalt roller according to the invention. The same applies to the method according to the invention described below, which also achieves the object set at the beginning.

The invention also relates to a method for operating a soil compaction device, in particular a soil compaction device according to the above statements, with a compaction roller rotatably mounted on a support structure and a pavement 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 circumferential surface of the compression roller, driven by an adjustment drive. The method according to the invention has at least the following steps: moving the facing edge processing device from the passive position to the edge processing position relative to the outer surface of the compaction roller and a simultaneous, automatic adjustment of a clippings deflector relative to the facing edge processing device, in particular into the material control position. The method according to the invention is thus characterized in that the clippings deflector and in particular its material guide surface are automatically moved into the material guide position by the adjustment of the edge processing roller in the edge processing position. In particular, both adjustments, both of the edge processing roller and of the clippings deflector, take place simultaneously, in particular coupled or positively coupled. According to the invention, it is therefore only necessary 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 can be developed in that the adjustment of the clippings deflector relative to the covering edge processing device as a function of a Adjusted position of the adjustment arm of the roll holding device, gravity or an interaction of the clippings deflector with the substrate takes place. To avoid repetition, reference is made to the above statements.

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 Figur 3 angedeuteten Perspektive;

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.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the figures. They show schematically:

Fig. 1:

a side view of an asphalt roller;

Fig. 2:

an enlarged side view of a lining edge processing device;

Fig. 3:

a plan view of a lining edge processing device;

Fig. 4:

a side view of a base edge processing device without edge processing roller and material guide surface from the dashed line with the two arrows in FIG Figure 3 indicated perspective;

Fig. 5:

a side view of a pavement edge processing device in the working position partially penetrating the subsurface pavement layer;

Fig. 6:

a side view of a pavement edge processing device in the working position completely penetrating the subsurface pavement layer;

Fig. 7:

a side view of an alternative embodiment of a pavement edge processing device in the working position completely penetrating the subsurface pavement layer;

Fig. 8:

a plan view of the lining edge processing device according to Figure 7 ; and

Fig. 9:

a flow chart of the process.

Identical or identically acting components are identified in the figures with the same reference symbols. Repetitive components are not identified separately in each figure.

Figure 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 chassis comprises support structures 6 and compression rollers 5, in the present case roller drums, mounted on the support structure 6. The compaction rollers 5 are mounted on the machine frame 3 via the support structures 6. In addition, 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. When the asphalt roller 1 is in operation, it is guided over a soil in or against the working direction a and compacts it, for which purpose the compaction rollers 5 are rotated about a travel axis 11 of rotation. The ground comprises, for example, a subsurface 9 and a subsurface covering layer 8 arranged on the subsurface 9. The subsurface covering layer 8 is, for example, an asphalt layer that is to be compacted by the asphalt roller 1 in order to form a road. The subsurface 9 is, for example, soil material arranged under the asphalt layer. The asphalt roller 1 according to Figure 1 has a soil compaction device 10 according to the invention, comprising a support structure 6, a compaction roller 5 and a pavement edge processing device 7. However, the soil compaction output 10 or the pavement 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. In addition, it is also possible that several machine sides each have a soil compacting device 10 with a pavement edge processing device 7.

The lining edge processing device 7 is shown in FIG Figure 2 in an enlarged side view in the same perspective as from Figure 1 shown. The pavement 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 adjustment arm. In particular, the roller holding device 13 embodied as an adjusting arm is mounted on the support structure 6 so as to be rotatable about a pivot axis 30. The edge processing roller 12, in turn, is also rotatably attached to the roller holding device 13, specifically about a roller rotation axis 15. In addition, the covering edge processing device 7 has a clippings deflector 16. The clippings deflector 16 is designed to transport clippings separated from the substrate layer 8 by the edge processing roller 12 laterally, i.e. transversely to the working direction a or parallel to the roller rotation axis 15 away from the remaining part of the substrate layer 8. In this way, a later removal of the cuttings is to be facilitated and the risk of inadvertently damaging the remaining subsurface covering layer 8 when the cuttings are transported away is to be reduced. The clippings deflector 16 comprises a bearing device 18, which is designed here as a bearing arm, and a material guide surface 17 arranged on the bearing arm or on the bearing device 18 . In particular, the lining edge processing device 7 and in particular the edge processing roller 12 can be adjusted by pivoting the roller holding device 13 between a passive position in which the edge processing roller 12 has no ground contact and an edge processing position in which the edge processing roller 12 either cuts off part of the sub-floor covering layer 8 or presses it on. In order to drive this adjustment movement of the roller holding device 13 or the adjustment arm, 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.

In Figure 2 a collecting container 24 is also shown, which has a receiving opening 25 located at the front in the working direction a and a material collecting area 26. The collecting container 24 is designed and arranged on the soil compacting device 10 or the pavement edge processing device 7 or the machine frame 3 of the asphalt roller 1, that cuttings conveyed away from the material guide surface 17 from the subgrade layer 8 when the asphalt roller 1 travels forwards in the working direction a through the receiving opening 25 in the material collecting area 26 of the collecting container 24 is conveyed. For this purpose, the collecting container 24 can have a ramp or a guide plate, for example, which is designed to guide the cut material into the receiving opening 25. The collecting container 24 is thus designed in such a way that it also collects the cut material in the same operation as the processing of the edge of the subsurface covering layer 8 by the edge processing roller 12. This therefore does not have to be collected in a separate work step by a separate machine, for example a wheel loader.

The lining edge processing device 7 is shown in FIG Figure 3 shown in a plan view, whereby their structure can be seen more precisely. So goes out Figure 3 shows that the edge processing roller 12 is rotatably supported via a bearing shaft 20 on the roller holding device 13 or the adjustment arm. In addition, the bearing device 18 or the bearing arm is also rotatably mounted on the bearing shaft 20. From a synopsis with Figure 4 it results 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 also be rotated about the bearing shaft 20, in particular about an adjustment axis 19 which corresponds to the roller axis of rotation 15. In addition, the bearing arm or the bearing device 18 is acted upon by means for applying the actuating force 21 with an actuating force which is in particular directed vertically downwards. The means for applying the actuating force 21 is designed as a gas pressure spring in the embodiment shown and between the bearing device 18 or the bearing arm and the roller holding device 13 or the adjusting arm. In particular, 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 downward in the vertical direction. The means for applying force 21 presses the material guide surface 17 onto the substrate, for example the substrate layer 8 or the substrate 9. By pressing the material guide surface 17 onto the substrate, the cuttings deflector 16 is prevented from jumping, which means that the cuttings are reliably conveyed away from the substrate 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 separates 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 rotation axis 15 or the adjustment axis 19 Figure 3 that the entire bearing device 18 including the width bridging piece 23 are arranged along the roller rotation axis 15 or the adjustment axis 19, viewed from the outside of the machine, at the same height and / or behind the edge processing roller 12. In other words, 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 rotation axis 15 or adjustment axis 19. Only the material guide surface 17 projects beyond the edge processing roller 12 in the direction of the roller rotation axis 15 or the adjustment axis 19 away from the machine. In particular, the material guide surface 17 projects beyond the edge processing roller 12 along the roller rotation axis 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 cut material is conveyed by the material guide surface 17. The material guide path 31 runs in the direction of the roller rotation axis 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.

In the material guiding position, 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 cut material from the edge processing roller 12 transversely to the working direction a to the outside. For this purpose, the material guide surface 17 can be pressed with its lower edge in a floating manner onto 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 with continuous contact with the ground. In order to avoid wear on the material guide surface 17, it is also possible, however, to carry it along at a slight distance from the substrate, that is to say floating above the substrate. An adjustment path limiting device 22 can be provided for this purpose, as is shown, for example, in FIG Figure 4 is shown. In the exemplary embodiment shown, the adjustment path limiting device 22 is a mechanical stop arranged on the roller holding device 13 or the adjustment arm. This can, for example, also be part of an elongated hole into which the bearing device 18 or the bearing arm at least partially protrudes and which limits the adjustment movement of the edge processing roller 12. In particular, by means of a form-fitting stop with the bearing device 18 or the bearing arm, the adjustment path limiting device 22 prevents the material guide surface 17 from being adjusted so far downward in the vertical direction 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. This results in a spacing and floating mounting of the material guide surface 17 above the ground. The corresponding spacing can be a few millimeters, so that although increased wear on the material guide surface 17 is prevented, at the same time reliable collection or conveyance of the cut material is guaranteed.

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. This goes, for example, from the Figures 5 and 6 emerged. The two figures show the lining edge processing device 7 in two different edge processing positions. In particular shows Figure 5 an edge-processing position in which the edge-processing roller 12 does not completely penetrate the subsoil layer 8, for example an asphalt layer. In the situation according to Figure 6 In contrast, the edge processing roller 12 penetrates the subsurface 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 adjustment drive 14. As a result, the edge processing roller 12 can be adjusted in its vertical position. So that the clippings deflector 16 and in particular the material guide surface 17 is in the correct material guide position in both positions of the edge processing roller 12, the clippings deflector 16 or the material guide surface 17 is adjusted automatically and at the same time 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 substrate and on the other hand by the means for applying force 21, which is designed as a gas pressure spring Figure 5 into the vertically deeper edge processing position according to Figure 6 adjusted, the material guide surface 17 is pressed against the ground. As a result, the material guide surface 17 is pressed vertically upwards from the ground, the bearing device 18 or the bearing arm rotates about the adjustment axis 19. At the same time, however, the gas pressure spring pushes the material guide surface 17 downwards, so that it is ensured that the material guide surface 17 is always in contact remains with the subsoil, and is not lifted from it. In this way, the cut material is always reliably grasped by the material guide surface 17. According to the invention, the material guide surface 17 is therefore always automatically and automatically, triggered by the adjustment of the edge processing roller 12, brought in its vertical height into the correct material guide position. An additional, manual setting of the clippings deflector 16 by an operator is not necessary.

the Figures 7 and 8 show an alternative embodiment of a pavement edge processing device 7. In particular, FIG Figure 7 a side view of the pavement edge processing device 7 in the subsurface pavement layer 8 completely penetrating working position. Figure 8 shows the pavement edge processing device 7 in plan. The surface edge processing device 7 largely corresponds to the above explanations, to which reference is therefore made to avoid repetitions. In contrast to the embodiment explained so far, the bearing device 18, in particular its bearing arm, is arranged along the roller rotation axis 15 further out on the machine than the edge processing roller 12. In other words, the edge processing roller 12 is arranged between the roller holding device 13 and the bearing device 18. In addition, a means for applying actuating force 21, designed as a tension spring or spiral spring, can be present, 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 roller holding device 13. The spiral spring acts on the bearing device 18 with a force 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 sub-floor covering layer 8. Like in particular from Figure 8 As can be seen, the material guide surface 17 can be designed in such a way that it protrudes on both sides along the roller rotation axis 15 beyond the bearing device 18, 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 removed with good reliability in the direction of the machined edge.

Figure 9 shows a flow chart of the method according to the invention 27. The method 27 comprises an adjustment 28 of the surface edge processing device 7 from the passive position into the edge processing position relative to the outer circumferential surface of the compaction roller 5. Alternatively, the adjustment 28 could also take place between two different edge processing positions, such as in the Figures 5 and 6 shown. It is now essential for the invention that at the same time as the adjustment 28 of the lining edge processing device 7, an adjustment 29 of the clippings deflector 16 relative to the lining edge processing device 7 and in particular relative to the roller holding device 13 also takes place automatically or automatically. As has already been explained above, according to the invention there is an automatic adjustment of the clippings deflector 16 to the correct material guide position of the material guide surface 17 for the respective edge processing position of the edge processing roller 12 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 that the cutting material is removed from the subsurface covering layer 8 by the cutting material deflector 16 without further work steps, so that the Clippings can be collected more easily and quickly.

Claims (16)

Soil compacting device (10) for compacting a subsoil layer (8), - With at least one compaction roller (5) rotatably mounted on a support structure (6) of the soil compaction device (10) about a horizontal and transverse to a working direction (a) running axis of rotation (11), which comprises a cylindrical outer surface that rolls on the ground during compaction , - With a facing edge processing device (7) arranged on the supporting structure (6), comprising an edge processing roller (12), an adjustable roller holding device (13), in particular an adjustment arm, and an adjustment drive (14), the edge processing roller (12) about a roller rotation axis ( 15) is rotatably mounted on the adjustable roller holding device (13), and wherein the adjustable roller holding device (13) can be adjusted together with the edge processing roller (12) from a passive position into an edge processing position relative to the outer circumferential surface of the compression roller (5) driven by the adjustment drive (14) is mounted on the support structure (6), - and with a clippings deflector (16) with at least one material guide surface (17), which is provided for the purpose of removing clippings that occur during operation of the pavement edge processing device (7) when passing the subsurface pavement layer (8) from the subsurface pavement layer (8) in the direction of the travel axis (11) to push away characterized,
that the clippings deflector (16) is mounted on the lining edge processing device (7) with the aid of a bearing device (18), the bearing device (18) being designed in such a way that the relative position of the at least one material guide surface (17) of the clippings deflector (16) with respect to the adjustable roller holding device (13) of the lining edge processing device (7) can be changed automatically. Soil compacting device (10) according to claim 1,
characterized,
that the storage device (18) for storing the clippings deflector (16) on the surface edge processing device (7) has at least one of the following features: - It is designed in such a way that it adjusts the relative position of the at least one material guide surface (17) with respect to the adjustable roll holding device (13) as a function of the set position of the adjustable roll holding device (13) with respect to the support structure (6); - It is designed in such a way that it adjusts the relative position of the at least one material guide surface (17) with respect to the adjustable roller holding device (13) as a function of gravity; - It is designed in such a way that it adjusts the relative position of the at least one material guide surface (17) with respect to the adjustable roller holding device (13) by interacting with a substrate. Soil compacting device (10) according to one of the preceding claims,
characterized,
that the clippings deflector (16) is adjustably mounted directly on the covering edge processing device (7). Soil compacting device (10) according to one of the preceding claims,
characterized,
that the bearing device (18) of the clippings deflector (16) either has a bearing arm that can be rotated about an adjustment axis (19) relative to the adjustable roller holding device (13) of the covering edge processing device (7) and / or a bearing arm that can be rotated along an adjusting curve relative to the adjustable roller retaining device (13) of the edge processing device ( 7), in particular linearly, has displaceable bearing arm. Soil compacting device (10) according to claim 4,
characterized,
that the bearing arm of the bearing device (18) of the clippings deflector (16) is rotatably mounted coaxially to the roller axis of rotation (15) of the edge processing roller (12) relative to the adjustable roller holding device (13). Soil compacting device (10) according to one of the preceding claims,
characterized,
that the bearing device (18), in particular the bearing arm of the bearing device, is arranged at least partially in the direction of the roller rotation axis (15) between the edge processing roller (12) and the adjustable roller holding device (13) of the facing edge processing device (7) or that the bearing device (18) , in particular the bearing arm of the bearing device, viewed in the direction of the roller rotation axis (15), is arranged on the side of the edge processing roller (12) facing away from the compression roller (5). Soil compacting device (10) according to one of the preceding claims,
characterized,
that the bearing device (18), in particular the bearing arm of the bearing device (18), is mounted on the facing edge processing device (7) in such a way that it rotates around a bearing shaft (20) of the edge processing roller (12), in particular in the radial direction to the roller axis of rotation (15). Soil compacting device (10) according to one of the preceding claims,
characterized,
that the bearing device (18) has a means for applying actuating force (21) to the clippings deflector (16), in particular acting at least partially downwards in the vertical direction. Soil compacting device (10) according to one of the preceding claims,
characterized,
that the means for applying the actuating force (21) of the clippings deflector (16) has at least one of the following features: - It is arranged between the bearing arm and the adjustable roller holding device (13); - It is arranged between the bearing arm and the bearing shaft (20) arranged on the roller holding device (13), the bearing shaft (20) in particular being passed through the edge processing roller (12) onto the side of the edge processing roller (12) facing away from the compression roller (5); - it is a gas pressure spring, a torsion spring or a spiral spring; - It comprises an elastic adjusting element. Soil compacting device (10) according to one of the preceding claims,
characterized,
that there is an adjustment path limiting device (22) which limits the adjustment path of the clippings deflector (16) relative to the edge processing roller (12) and / or relative to the compression roller (5). Soil compacting device (10) according to one of the preceding claims,
characterized,
that the material guide surface (17) extends along the roller rotation axis (15) on both sides away from the bearing device (18), in particular towards and away from the edge processing roller (12). Soil compacting device (10) according to one of the preceding claims,
characterized,
that the bearing device (18) between the bearing arm and the material guide surface (17) has a width bridging piece (23) which extends in the direction parallel to the roller rotation axis (15) and whose extent in the direction of the roller rotation axis (15) is in the range 80% to 120% of the axial Extension of the edge processing roller (12) in the direction of the roller axis of rotation (15). Soil compacting device (10) according to one of the preceding claims,
characterized,
that it has a collecting container (24) arranged in the working direction (a) behind the material guiding surface (17), comprising a receiving opening (25) and a material collecting area (26), the receiving opening (25) being positioned in such a way that from the one located in the material guiding position Material guide surface (17) guided material is guided into the receiving opening (25) during a movement which is continued in the working direction (a). Asphalt roller (1), in particular an articulated or pivot-steered tandem roller, with a soil compacting device (10) according to one of the preceding claims. Method (27) for operating a soil compacting device (10), in particular a soil compacting device (10) according to one of Claims 1 to 13, with a compacting roller (5) rotatably mounted on a support structure (6) and a pavement edge processing device mounted on the support structure (6) (7), comprising an edge processing roller (12), an adjustment arm and an adjustment drive (14), the edge processing roller (12) being adjustable from a passive position into an edge processing position relative to the outer circumferential surface of the compression roller (5) driven by the adjustment drive (14), the method (27) comprising at least the steps a) Adjusting (28) the surface edge processing device (7) from the passive position into the edge processing position relative to the outer circumferential surface of the compaction roller (5), b) to step a) simultaneous automatic adjustment (29) of a clippings deflector (16) relative to the covering edge processing device (7). Method (27) according to claim 15,
characterized,
that the adjustment (29) of the clippings deflector (16) relative to the covering edge processing device (7) as a function of - a position of the adjustment arm, - gravity or - An interaction of the clippings deflector (16) with the ground takes place.

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