DE102023126192A1 - Soil compactor - Google Patents

Abstract

A soil compactor for compacting soil material (10), comprising at least one compactor roller (22) rotatable on a machine frame about a roller rotation axis (W) substantially orthogonal to a compactor longitudinal direction (L) and a compactor height direction (H) and extending substantially in a compactor transverse direction (Q), with an edge processing device (24) associated therewith for processing a lateral edge (38) of compacted soil material (10), wherein the edge processing device (24) comprises an edge processing disc (26) rotatably supported on a disc carrier (30) about an edge processing rotation axis (K), characterized in that the edge processing rotation axis (K) is or can be adjusted at a first angle of attack (W1) with respect to the compactor transverse direction (Q) in the compactor longitudinal direction (L).

Description

The present invention relates to a soil compactor for compacting soil material, such as asphalt material, comprising at least one compactor roller rotatable on a machine frame about a roller rotation axis substantially orthogonal to a compactor longitudinal direction and a compactor height direction, extending substantially in a compactor transverse direction, with an edge processing device assigned to the roller for processing a side edge of compacted soil material, wherein the edge processing device comprises an edge processing disc rotatably supported on a disc carrier about an edge processing rotation axis.

Such a soil compactor is from the DE 29 27 883 A1 known. In this soil compactor, the edge processing axis of rotation lies in a plane spanned by the compactor's transverse direction and the compactor's vertical direction and can be adjusted within this plane, i.e., positioned at different angles of attack relative to the compactor's transverse direction. This makes it possible to vary the angle of inclination of a side edge of the compacted soil, which is processed with the edge processing disc by pressing the soil material.

From the EP 3 926 096 A1 A soil compactor is known in which an edge processing device with an edge processing disc rotatable about an edge processing axis of rotation is assigned to a compactor roller. The edge processing axis of rotation is oriented parallel to the rotation axis of the compactor roller. In order to remove soil material cut off by the edge processing disc when processing a side edge of the compacted soil from the processed side edge, the edge processing disc is assigned a cuttings deflector arranged behind the edge processing disc with respect to a compactor working direction.

It is the object of the present invention to provide a soil compactor with improved edge processing characteristics.

According to the invention, this object is achieved by a soil compactor for compacting soil material, comprising at least one compactor roller rotatable on a machine frame about a roller rotation axis substantially orthogonal to a compactor longitudinal direction and a compactor height direction, extending substantially in a compactor transverse direction, with an edge processing device assigned to it for processing a side edge of compacted soil material, wherein the edge processing device comprises an edge processing disc rotatably supported on a disc carrier about an edge processing rotation axis.

The soil compactor according to the invention is characterized in that the edge processing axis of rotation is or can be adjusted at a first angle of attack with respect to the compactor transverse direction in the compactor longitudinal direction.

By setting the edge processing axis of rotation at such a first angle of attack, it is fundamentally ensured that the edge processing axis of rotation does not lie in a plane spanned by the compactor's transverse direction and the compactor's vertical direction. This orientation achieves two advantages that significantly improve the edge processing characteristics. Firstly, the edge processing disc, with its side facing away from the side edge of the soil material to be processed, creates a deflecting effect by which soil material separated from the side edge area during edge processing is deflected laterally in the direction away from the side edge. The edge processing disc itself therefore acts like a plow or deflector during the edge processing process carried out by it. Secondly, this setting of the edge processing axis of rotation creates a curved transition formed by the circular curvature of the outer peripheral edge of the edge processing disc in the transition from the side edge of the soil material processed by the edge processing disc to a surface of the soil material positioned laterally next to the side edge area. The radius of curvature of this curved transition increases with the increasing initial angle of attack. This avoids a sharp-edged, for example, right-angled transition from the side edge to the adjoining, essentially horizontally oriented surface of the soil material. The result is that, when soil material, such as asphalt material, is deposited in this area in a subsequent work process, a complete connection is achieved, particularly in the area where the side edge transitions into the horizontally oriented surface, and the formation of voids not filled with soil material applied in this subsequent work process is avoided.

A sufficiently strong deflection effect and a sufficiently large radius of curvature in the transition area of the machined side edge to an adjacent area of the soil material can be achieved, for example, if the first angle of attack is in the range of 5°-15°.

In order to be able to adjust the positioning of the tillage disc to suit the height of the side edge to be worked, for example, it is proposed that the first angle of attack is variable.

In order to efficiently deflect soil material cut off during the processing of the side edge, it is proposed that the edge processing axis of rotation, starting from the disc carrier, is set in the direction away from the at least one compactor roller with the first angle of attack with respect to the compactor transverse direction in a compactor working movement direction substantially parallel to the compactor longitudinal direction.

The previously mentioned effect of the edge processing disc when processing a side edge of soil material to deflect cut-off soil material and create a rounded transition can be supported by setting or adjusting the edge processing axis of rotation at a second angle of attack relative to the compactor's transverse direction in the compactor's vertical direction. This setting at the second angle of attack can also influence, in particular, the geometry or inclination of the processed side edge.

The second angle of attack can, for example, be in the range of 25°-35°.

To increase the variability when carrying out such a machining operation, it is advantageous if the second angle of attack is variable.

In order to obtain a downwardly and outwardly inclined side edge, it is proposed that the edge processing axis of rotation, starting from the disc carrier, is set in the direction away from the at least one compactor roller with the second angle of attack with respect to the compactor transverse direction in a downward compactor direction substantially parallel to the compactor height direction.

A processing characteristic that is consistent in the working direction can be ensured by the edge processing disc being supported on the disc carrier in a radially inner region with respect to the edge processing axis of rotation so that it can rotate about the edge processing axis of rotation and having a circular outer peripheral wheel that is concentric with the edge processing axis of rotation.

The edge processing disc can have an edge processing surface on an edge processing side facing the at least one compactor roller that is at least partially non-orthogonal with respect to the edge processing axis of rotation. Such a geometry makes it possible to create a correspondingly defined geometry of a side edge.

Furthermore, the edge processing disc can have a deflection surface on a deflection side facing away from the at least one compactor roller that is at least partially non-orthogonal with respect to the edge processing axis of rotation. Such a geometry can enhance the deflection effect generated on the deflection side.

In particular, it can be provided that the edge processing surface is at least partially convexly curved, and/or that the deflection surface is at least partially concavely curved.

In a design that is particularly simple to implement and particularly advantageous both in terms of processing the side edge and in terms of deflecting separated soil material, it can be provided that the edge processing disc has essentially the same thickness between the edge processing surface and the deflection surface in all circumferential and radial regions. Such an edge processing disc can, for example, be provided as a formed sheet metal part with an essentially constant thickness. This can be achieved, in particular in conjunction with the setting of the edge processing rotation axis at the first setting angle, that the edge processing process is a cutting process that separates excess soil material, and not a pressing process that significantly influences the density of the processed soil material in the region of the side edge.

The edge processing disc can be assigned a scraper which overlaps it on its edge processing side facing the compactor roller and/or on its deflection side facing away from the compactor roller for scraping off soil material adhering to the edge processing disc.

• 1 eine Seitenansicht eines Bodenverdichters mit einer Verdichterwalze und einer dieser zugeordneten Kantenbearbeitungsvorrichtung;
• 2 eine perspektivische Detailansicht der Verdichterwalze mit der Kantenbearbeitungsvorrichtung;
• 3 eine Ansicht der Verdichterwalze mit der Kantenbearbeitungsvorrichtung von oben in Blickrichtung III in den 2 und 4;
• 4 eine Ansicht der Verdichterwalze mit der Kantenbearbeitungsvorrichtung von vorne in Blickrichtung IV in 2 und 3;
• 5 das Detail V in 4 vergrößert;
• 6 eine Kantenbearbeitungsscheibe der Kantenbearbeitungsvorrichtung mit einem dieser zugeordneten Abstreifer im Schnitt in 6a) und in Axialansicht in 6b).

The present invention is described in detail below with reference to the accompanying figures. It shows:

• 1 a side view of a soil compactor with a compactor roller and an edge processing device associated therewith;
• 2 a perspective detailed view of the compactor roller with the edge processing device;
• 3 a view of the compactor roller with the edge processing device from above in direction III in the 2 and 4 ;
• 4 a view of the compactor roller with the edge processing device from the front in direction IV in 2 and 3 ;
• 5 the detail V in 4 enlarged;
• 6 an edge processing disc of the edge processing device with a scraper assigned to it in section in 6a) and in axial view in 6b) .

In 1 A soil compactor 12 used for compacting soil material 10 is shown in side view. In the illustrated embodiment, the soil compactor 12 comprises drive wheels 16 on a rear carriage 14, which, driven by a drive unit provided on the rear carriage 14, move the soil compactor 12 in a compactor longitudinal direction L on the soil material 10 to be compacted. An operator's station 18 is also provided on the rear carriage 14. A front carriage 20 is articulatedly connected to the rear carriage 14, on which front carriage a compactor roller 22 is pivoted about an angle relative to the plane of the drawing. 1 and rotatably supported to the roller rotation axis D, which essentially corresponds to a horizontal direction of the compactor longitudinal direction L, and to a vertical direction of the compactor vertical direction H, which essentially corresponds to a vertical direction and is essentially orthogonal to the compactor longitudinal direction L. The roller rotation axis D thus extends essentially in the compactor transverse direction Q. In association with the compactor roller 22, an edge processing device, generally designated 24, is provided at at least one axial end region thereof. With the edge processing device 24, a lateral edge region of the soil material 10, in particular asphalt material, compacted by the soil compactor 12 can be processed in order to achieve a defined, smooth lateral finish of the compacted soil material 10.

It should be noted that the soil compactor 12 may be constructed differently than in 1 shown. This could, for example, also comprise a compactor roller on the rear carriage 14, which can likewise be assigned to an edge processing device at at least one axial end region thereof. If such a soil compactor, for example a pivot-steered soil compactor, has two compactor rollers carried on a machine frame via steering bolsters at a mutual distance from one another in the compactor longitudinal direction L, one of the compactor rollers can, for example, be assigned an edge processing device at one of its axial end regions, while the other of the two compactor rollers can be assigned an edge processing device at the other axial end, so that an edge processing device is provided on each side region of the soil compactor.

The structure of such an edge processing device 24 is described below with reference to the 2 to 6 described in detail.

The edge processing device 24 comprises an edge processing disk 26 which is rotatably supported in a central region 28 thereof on a disk carrier 30 about an edge processing axis of rotation K and has a circular outer peripheral edge 32 concentric with the edge processing axis of rotation K.

The disc carrier 30 is fixed to a pivot arm 34, which in turn is pivotable on a suspension element rotatably supporting the compactor roller 22 on the front carriage 20 about a pivot axis parallel, for example, to the roller rotation axis D of the compactor roller 22. The pivoting of the pivot arm 34 can be effected, for example, by a piston/cylinder device 36. By pivoting the pivot arm 34, the edge processing device 24 can be moved between its 2 shown active position, in which the edge processing disc 26 is positioned for processing or producing a smoothly cut side edge 38 of the floor material 10, and a raised passive position, in which the edge processing disc 26 is positioned above the floor material 10 and thus does not interact with it.

The 3 and 4 illustrate that in the edge processing device 24 the edge processing disc 26 is positioned so that, particularly in the active position, the edge processing rotation axis K is not parallel to the roller rotation axis D. The 3 When viewing the compactor roller 22 or the edge processing device 24 from above in the compactor height direction H, which is substantially orthogonal to the compactor height direction H and the compactor longitudinal direction L, it is clear that the edge processing axis of rotation K is set at a first angle of attack W1 in the compactor longitudinal direction L with respect to the compactor transverse direction Q.

The edge processing rotation axis K is therefore not located in a direction defined by the compressor transverse direction Q and the compressor height direction H on tensioned plane, but is, starting from the disc carrier 30, set with respect to such a plane or the compactor transverse direction Q in a compactor working movement direction A that is essentially parallel to the compactor longitudinal direction L. During an edge processing process by means of the edge processing device 24, the soil compactor 12 moves in the compactor working movement direction A. The edge processing rotation axis K is thus set forward with respect to the compactor working movement direction A, starting from the disc carrier 30.

By setting the edge processing rotation axis K with the first angle of attack W1, as shown in 4 As can be seen, the edge processing disc 26, which is essentially shell-like or dome-shaped, is positioned in such a way that its deflection side 40, oriented away from the compactor roller 22, or a concavely curved deflection surface 42 formed on the deflection side 40, opens forwards, corresponding to the first angle of attack W1. At the same time, the edge processing disc 26, on its edge processing side 44 facing the compactor roller, is in contact with the soil material 10 in the radially outer region with a convexly curved edge processing surface 46 formed on the edge processing side 44, in order to thereby process the side edge 38 by cutting or separating the soil material 10 in the region of the side edge 38.

This processing process of the soil material 10 by means of the edge processing disc 26 set at the first angle of attack W1 leads to two significant advantages. On the one hand, the edge processing disc 26, which also rotates about the edge processing axis of rotation K during edge processing operation, acts with its concave deflection surface 42 as a deflector or plow for the soil material 10 separated in the area of the side edge 38 and guides it outwards, i.e. laterally in the direction away from the compactor roller 22. This effect is particularly efficient due to the shell-like structure of the edge processing disc 26, which is preferably of the same thickness in all areas, in that in the lowest area of the edge processing disc 26 in the vertical direction, i.e. where it is in contact with the soil material 10 for processing the side edge 38, the edge processing surface 42 is approximately parallel to the compactor's longitudinal direction or to the compactor's working movement direction A. Contrary to the compactor working movement direction A, the deflection surface 42 curves outwards away from the compactor roller 22, so that when the soil compactor 12 and thus also the entire edge processing device 24 are moved in the compactor working movement direction A, soil material 10 that has been separated is moved by the deflection surface 42 that is curved outwards in the respective lower area, i.e. away from the compactor roller 22, in the direction away from the side edge 38 that has already been processed.

A second effect of setting the edge processing disc 26 at the first angle of attack W1 is that, due to the circular geometry of the outer peripheral edge 32, a curved transition with a radius R is formed in the transition from the side edge 38 to an adjoining, essentially horizontally oriented surface area 48 of the soil material 10. The radius R increases with increasing first angle of attack W1.

By creating this curved transition between the side edge 38 and the adjacent surface area 48 of the soil material 10, a sharp-edged, for example, right-angled transition is avoided. This leads to the particular advantage that if soil material, for example, asphalt material, is to be applied in this area, i.e., adjacent to the side edge 38 or in the surface area 48, in a subsequent work process, the formation of a cavity not filled with this material is avoided in this transition area.

The effects introduced by the adjustment of the edge processing axis of rotation K with the first angle of attack W1 can then be used even more efficiently if the edge processing axis of rotation K is additionally adjusted at a second angle of attack W2, starting from the disk carrier 30, with respect to the compressor transverse direction Q in the compressor height direction H downwards, i.e. a compressor downward direction U that is essentially parallel to the compressor height direction H. By adjusting this adjustment also with the second angle of attack W2, an orientation of the edge processing axis of rotation K is achieved such that it lies neither in a substantially horizontally oriented plane spanned by the compressor transverse direction Q and the compressor longitudinal direction L, nor in a substantially vertically oriented plane spanned by the compressor transverse direction Q and the compressor height direction H.

Since in the edge processing device 24 described above the plate-like or bowl-like formed edge processing disc 26, for example with such a structure also frustoconical formed, also takes over the function of a lateral deflector for separated soil material 10, there is basically the risk that this, for example, by Asphalt material provided soil material 10 adheres to the edge processing disc 26, in particular the deflection surface 42 thereof. To avoid this, the edge processing disc 26 can be provided with a 6 A scraper 50, shown in principle, can be assigned to the disc carrier 30. This can, for example, be attached to the disc carrier 30 and can overlap the edge-working disc 26, particularly in its radially outer region on the deflection side 40 and/or the edge-working side 44, at least in the radially outer region, i.e., the region that primarily comes into contact with the soil-working material 10, from radially outside to radially inside. Soil material 10 adhering to the edge-working disc 26 is scraped off by the scraper 50, falls down, and is then deflected to the side.

In the illustrated embodiment, the soil tillage disc 26 is supported by the disc carrier 30 in a fixed manner defined with respect to the angles of attack W1, W2. In an alternative embodiment, the disc carrier could be constructed with two parts that are movable or adjustable relative to one another, so that at least one of the angles of attack W1, W2 is variable. By changing the first angle of attack W1, the radius R and the deflection effect can primarily be influenced. By changing the second angle of attack W2, the inclination of the side edge 38 can primarily be influenced.

Finally, it should be noted that in the above-mentioned directions, the compactor's longitudinal direction L was considered, in particular, with consideration of a soil compactor 10 moving straight ahead. For a soil compactor 10 traveling in a curve, the compactor's longitudinal direction L can, for example, be considered as the direction of extension orthogonal to the compactor's vertical direction H and the compactor's transverse direction Q, which is also orthogonal to a roller rotation axis D considered in connection with an edge processing device 24.

QUOTES CONTAINED IN THE DESCRIPTION

This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 29 27 883 A1 [0002]
• EP 3 926 096 A1 [0003]

Claims (13)

Soil compactor for compacting soil material (10), comprising at least one compactor roller (22) which is rotatable on a machine frame about a roller rotation axis (W) which is substantially orthogonal to a compactor longitudinal direction (L) and a compactor height direction (H) and extends substantially in a compactor transverse direction (Q), and has an edge processing device (24) assigned to it for processing a side edge (38) of compacted soil material (10), wherein the edge processing device (24) comprises an edge processing disc (26) which is supported on a disc carrier (30) so as to be rotatable about an edge processing rotation axis (K), characterized in that the edge processing rotation axis (K) is or can be adjusted at a first angle of attack (W1) with respect to the compactor transverse direction (Q) in the compactor longitudinal direction (L). Soil compactor according to Claim 1 , characterized in that the first angle of attack (W1) is in the range of 5°-15°. Soil compactor according to Claim 1 or 2 , characterized in that the first angle of attack (W1) is variable. Soil compactor according to one of the Claims 1 - 3 , characterized in that the edge processing rotation axis (K), starting from the disc carrier (30), is set in the direction away from the at least one compactor roller (22) with the first angle of attack (W1) with respect to the compactor transverse direction (Q) in a compactor working movement direction (A) substantially parallel to the compactor longitudinal direction (L). Soil compactor according to one of the Claims 1 - 4 , characterized in that the edge processing rotation axis (K) is or can be adjusted at a second angle of attack (W2) with respect to the compressor transverse direction (Q) in the compressor height direction (H). Soil compactor according to Claim 5 , characterized in that the second angle of attack (W2) is in the range of 25°-35°. Soil compactor according to Claim 5 or 6 , characterized in that the second angle of attack (W2) is variable. Soil compactor according to Claim 1 , characterized in that the edge processing rotation axis (K), starting from the disc carrier (30), is set in the direction away from the at least one compactor roller (32) with the second angle of attack (W2) with respect to the compactor transverse direction (Q) in a compactor downward direction (U) substantially parallel to the compactor height direction (H). Soil compactor according to one of the Claims 1 - 8 , characterized in that the edge processing disc (26) is supported on the disc carrier (30) in a radially inner region (28) with respect to the edge processing axis of rotation (K) so as to be rotatable about the edge processing axis of rotation (K) and has a circular outer peripheral wheel (32) concentric with the edge processing axis of rotation (K). Soil compactor according to one of the Claims 1 - 9 , characterized in that the edge processing disc (26) has, on an edge processing side (44) facing the at least one compactor roller (22), an edge processing surface (46) which is at least partially non-orthogonal with respect to the edge processing axis of rotation (K), and/or that the edge processing disc (26) has, on a deflection side (40) facing away from the at least one compactor roller (22), a deflection surface (42) which is at least partially non-orthogonal with respect to the edge processing axis of rotation (K). Soil compactor according to claim 10, characterized in that the edge processing surface (46) is at least partially convexly curved, and/or that the deflection surface (42) is at least partially concavely curved. Soil compactor according to Claim 10 or 11 , characterized in that the edge processing disc (26) has essentially the same thickness between the edge processing surface (46) and the deflection surface (42) in all circumferential areas and radial areas. Soil compactor according to one of the Claims 1 - 12 , characterized in that the edge processing disc (26) is assigned a scraper (50) which overlaps it on its edge processing side (44) facing the compactor roller (22) and/or on its deflection side (40) facing away from the compactor roller (22) for scraping off soil material (10) adhering to the edge processing disc (26).

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