Compactor machine with edge cutting device

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) which is essentially orthogonal to a longitudinal direction (L) and a vertical direction (H) of the compactor and extends essentially in a transverse direction (Q) of the compactor, with an edge-processing device (24) associated therewith for processing a side edge (38) of compacted soil material (10), wherein the edge-processing device (24) comprises an edge-processing disc (26) rotatably mounted on a disc carrier (30) about an edge-processing rotation axis (K), is characterized in that the edge-processing rotation axis (K) is set or can be set at a first angle of attack (W1) with respect to the transverse direction (Q) of the compactor in the longitudinal direction (L).

Description

[0001] 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 that is essentially orthogonal to a longitudinal direction and a vertical direction of the compactor and extends essentially in a transverse direction of the compactor, with an edge-processing device associated therewith for processing a side edge of compacted soil material, wherein the edge-processing device comprises an edge-processing disc rotatably mounted on a disc carrier about an edge-processing rotation axis.

[0002] Such a soil compactor is known from DE 29 27 883 A1. In this soil compactor, the edge-processing axis of rotation lies in a plane defined by the compactor's transverse and vertical directions 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 processed by the edge-processing disc through the pressing of the soil material.

[0003] From 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 axis of rotation 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, a cutting material deflector is assigned to the edge-processing disc, arranged behind the edge-processing disc with respect to a direction of compactor movement.

[0004] The object of the present invention is to provide a soil compactor with improved edge processing characteristics.

[0005] According to the invention, this problem is solved by a soil compactor for compacting soil material, comprising at least one compactor roller rotatable on a machine frame about a roller rotation axis that is essentially orthogonal to a longitudinal direction and a vertical direction of the compactor and extends essentially in a transverse direction of the compactor, with an edge-processing device associated therewith for processing a side edge of compacted soil material, wherein the edge-processing device comprises an edge-processing disc rotatably mounted on a disc carrier about an edge-processing rotation axis.

[0006] The soil compactor according to the invention is characterized in that the edge processing axis of rotation is set or can be set at a first angle of attack with respect to the compactor transverse direction in the compactor longitudinal direction.

[0007] By positioning the edge-processing axis of rotation at such a first angle of attack, it is ensured that the axis of rotation does not lie in a plane defined by the compressor's transverse and vertical directions. This orientation achieves two advantages that significantly improve the edge-processing characteristics. Firstly, the edge-processing disc, with its side facing away from the edge of the soil being processed, creates a deflecting effect. This effect deflects soil material cut from the edge area laterally away from the edge during edge processing. The edge-processing disc itself thus acts like a plow or deflector during the edge-processing operation.Secondly, this positioning of the edge-processing rotation axis creates a curved transition at the point where the edge of the soil material is processed by the edge-processing disc and the surface of the soil material positioned laterally adjacent to the edge. This curved transition is formed by the circular curvature of the outer circumference of the edge-processing disc. The radius of curvature of this curved transition increases with increasing initial angle of attack. This prevents a sharp-edged, for example, right-angled transition from the edge to the adjacent, essentially horizontally oriented surface of the soil material.The consequence of this is that when soil material, such as asphalt material, is applied to this area in a later 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 cavities not filled with soil material applied in this further work process is avoided.

[0008] A sufficiently strong deflecting effect and a sufficiently large radius of curvature in the transition area of ​​the machined side edge to an adjoining area of ​​the soil material can be achieved, for example, if the initial angle of attack is in the range of 5°-15°.

[0009] In order to be able to adjust the positioning of the soil cultivation disc appropriately, for example, in adaptation to the height of the side edge to be processed, it is proposed that the first angle of attack be variable.

[0010] To efficiently deflect soil material cut off during side edge processing, 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 compressor transverse direction in a compressor working direction that is essentially parallel to the compressor longitudinal direction.

[0011] The previously mentioned effect of the edge-processing disc when working the side edge of soil material to deflect cut soil material and create a rounded transition can be enhanced by setting the edge-processing rotation axis at a second angle relative to the compressor's transverse direction in the compressor's vertical direction. This second angle of attack also allows for influencing the geometry or inclination of the processed side edge.

[0012] The second angle of attack can, for example, be in the range of 25°-35°.

[0013] To increase the variability when carrying out such a machining operation, it is advantageous if the second angle of attack is variable.

[0014] To obtain a downward and outward 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 compressor roller with the second angle of attack with respect to the compressor transverse direction in a compressor downward direction that is essentially parallel to the compressor vertical direction.

[0015] A consistent machining characteristic in the working direction can be ensured by the edge machining disc being rotatably mounted on the disc carrier in a radially inner area with respect to the edge machining axis of rotation and having a circular outer circumferential wheel concentric to the edge machining axis of rotation.

[0016] The edge-processing disc can have an edge-processing surface that is at least partially non-orthogonal with respect to the edge-processing axis of rotation on at least one of the edge-processing sides facing the at least one compressor roller. Such a geometry makes it possible to generate a correspondingly defined side edge geometry.

[0017] Furthermore, the edge-processing disc can have a deflection surface that is at least partially non-orthogonal with respect to the edge-processing axis of rotation on a deflection side facing away from the at least one compressor roller. Such a geometry can enhance the deflection effect generated on the deflection side.

[0018] In particular, it may be provided that the edge processing surface is convexly curved at least in some areas, and / or that the deflecting surface is concavely curved at least in some areas.

[0019] In a structurally simple design that is particularly advantageous both with regard to edge processing and the rejection of removed soil material, the edge processing disc can be designed to have essentially the same thickness between the edge processing surface and the rejection surface in all circumferential and radial areas. Such an edge processing disc can, for example, be provided as a sheet metal forming part with a substantially constant thickness. This, especially in conjunction with setting the edge processing axis of rotation at the first angle of attack, ensures that the edge processing operation is a cutting process that removes excess soil material, and not a pressing process that significantly affects the density of the processed soil material in the area of ​​the side edge.

[0020] The edge processing disc may be equipped with a scraper that overlaps it on its edge processing side facing the compaction roller and / or on its deflecting side facing away from the compaction roller for scraping off soil material adhering to the edge processing disc.

[0021] The present invention is described in detail below with reference to the accompanying figures. These show: Fig. 1 a side view of a soil compactor with a compaction roller and an associated edge-processing device; Fig. 2 a perspective detail view of the compaction roller with the edge-processing device; Fig. 3 a top view of the compaction roller with the edge-processing device in viewing direction III in the Fig. 2 and 4 Fig. 4 shows a front view of the compressor roller with the edge processing device in the direction of view IV. Fig. 2 and 3 ; Fig. 5 Detail V in Fig. 4 enlarged; Fig. 6 an edge processing disc of the edge processing device with one of its associated scrapers in section in Fig. 6a) and in axial view in Fig. 6b ).

[0022] In Fig. 1 Figure 12 shows a soil compactor 12 used for compacting soil material 10 in a side view. In the illustrated embodiment, the soil compactor 12 comprises drive wheels 16 on a rear carriage 14. These drive wheels, powered by a drive unit provided on the rear carriage 14, move the soil compactor 12 in a longitudinal direction L on the soil material 10 to be compacted. An operator's platform 18 is also provided on the rear carriage 14. A front carriage 20 is articulated to the rear carriage 14, and a compaction roller 22 is mounted on the front carriage 20 about an angle relative to the plane of the drawing. Fig. 1 and a roller rotation axis D is rotatably supported in relation to the compactor's longitudinal direction L, which essentially corresponds to a horizontal direction, and to the compactor's vertical direction H, which essentially corresponds to a vertical direction and is essentially orthogonal to the compactor's longitudinal direction L. The roller rotation axis D thus extends essentially in the compactor's transverse direction Q. An edge-processing device, generally designated 24, is provided at at least one axial end region of the compactor roller 22. The edge-processing device 24 can be used to process a lateral edge region of the soil material 10, in particular asphalt material, compacted by the soil compactor 12, in order to achieve a defined, smooth lateral edge of the compacted soil material 10.

[0023] It should be noted that the soil compactor 12 may have a different design than described in [reference to relevant document]. Fig. 1 This could, for example, also include a compaction roller on the rear carriage 14, which can likewise be assigned an edge-processing device at at least one axial end region. If such a, for example, articulated soil compactor has two compaction rollers supported by steering brackets on a machine frame at a mutual distance from each other in the longitudinal direction L of the compactor, then, for example, one of the compaction rollers can be assigned an edge-processing device at one of its axial end regions, while the other of the two compaction rollers is 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.

[0024] The construction of such an edge processing device 24 is described below with reference to the Fig. 2 bis 6 described in detail.

[0025] The edge processing device 24 comprises an edge processing disc 26, which is rotatably mounted in a central area 28 of the same on a disc carrier 30 about an edge processing rotation axis K and has a circular outer circumferential edge 32 concentric to the edge processing rotation axis K.

[0026] The disc carrier 30 is fixed to a pivot arm 34, which in turn can be pivoted about a pivot axis parallel to, for example, the roller rotation axis D of the compactor roller 22 on a suspension element that rotatably supports the compactor roller 22 on the front carriage 20. 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 in Fig. 2 The depicted active position, in which the edge processing disc 26 is positioned to process or create a smoothly cut side edge 38 of the base material 10, and a raised passive position, in which the edge processing disc 26 is positioned above the base material 10 and is therefore not in interaction with it.

[0027] The Fig. 3 und 4 To illustrate that in the edge processing device 24, the edge processing disc 26 is positioned such that, particularly in the active position, the edge processing rotation axis K is not parallel to the roller rotation axis D. Fig. 3 The illustration shows, when considering the compressor roller 22 or the edge processing device 24 in the compressor vertical direction H, which is essentially orthogonal to the compressor vertical direction H and the compressor longitudinal direction L, that the edge processing rotation axis K is set at a first angle of attack W1 in the compressor longitudinal direction L with respect to the compressor transverse direction Q.

[0028] The edge-processing axis of rotation K is therefore not located in a plane defined by the compressor's transverse direction Q and its vertical direction H, but rather, starting from the disc carrier 30, is oriented with respect to such a plane or the compressor's transverse direction Q in a compressor working direction A that is essentially parallel to the compressor's longitudinal direction L. During an edge-processing operation using the edge-processing device 24, the soil compactor 12 moves in the compressor working direction A. The edge-processing axis of rotation K is thus oriented forward, relative to the compressor working direction A, starting from the disc carrier 30.

[0029] This positioning of the edge-processing rotary axis K with the first angle of attack W1 results in, as described in Fig. 4 It can be seen that such a positioning of the basically bowl- or dome-shaped edge-processing disc 26 is achieved such that its deflecting side 40, oriented away from the compaction roller 22, or a concave deflecting surface 42 formed on the deflecting side 40, opens forwards according to the first angle of attack W1. Simultaneously, the edge-processing disc 26, on its edge-processing side 44 facing the compaction roller, is in contact with the substrate material 10 in the radially outer area by means of a convexly curved edge-processing surface 46 formed on the edge-processing side 44, in order to process the side edge 38 by cutting or separating substrate material 10 in the area of ​​the side edge 38.

[0030] This processing of the soil material 10 by means of the edge-processing disc 26, which is positioned 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 concavely curved deflector surface 42 as a deflector or plow for the soil material 10 cut off in the area of ​​the side edge 38 and guides it outwards, i.e., laterally away from the compaction roller 22. This effect is particularly efficient due to the shell-like structure of the edge-processing disc 26, which preferably has the same thickness in all areas, because 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 longitudinal direction of the compaction roller.to the direction of the compactor's working movement A. Contrary to the direction of the compactor's working movement A, the deflecting 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 move in the direction of the compactor's working movement A, soil material 10 separated is moved away from the already processed side edge 38 by the deflecting surface 42, which is curved outwards in the respective lower area, i.e. away from the compactor roller 22.

[0031] A second effect of setting the edge-processing disc 26 with the first angle of attack W1 is that, due to the circular geometry of the outer circumferential edge 32, a curvature-like 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.

[0032] 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 has 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 further work step, the formation of a cavity not filled with this material in this transition area is avoided.

[0033] The effects introduced by setting the edge-processing rotary axis K at the first angle of attack W1 can be utilized even more efficiently if the edge-processing rotary axis K is additionally set at a second angle of attack W2, originating from the disk carrier 30, with respect to the compressor transverse direction Q in the compressor vertical direction H downwards, i.e., in a compressor downward direction U that is essentially parallel to the compressor vertical direction H. This setting with the second angle of attack W2 thus achieves such an orientation of the edge-processing rotary axis K that it lies neither in a plane spanned by the compressor transverse direction Q and the compressor longitudinal direction L, which is essentially horizontally oriented, nor in a plane spanned by the compressor transverse direction Q and the compressor vertical direction H, which is essentially vertically oriented.

[0034] Since the edge processing device 24 described above has a plate-like or bowl-like edge processing disc 26, which may also be shaped like a frustocone with such a structure, and which also serves as a lateral deflector for separated soil material 10, there is a fundamental risk that this soil material 10, provided for example by asphalt material, will adhere to the edge processing disc 26, in particular to its deflector surface 42. To prevent this, the edge processing disc 26 can be fitted with a Fig. 6The scraper 50, shown in principle, can be assigned to the edge-cultivation disc 26. This scraper can, for example, be fixed to the disc carrier 30 and can extend from the radial outside to the radial inside of the edge-cultivation disc 26, particularly in its radially outer region at the deflecting side 40 and / or the edge-cultivation side 44, at least in the radially outer region, i.e., the region that primarily comes into contact with the soil cultivation material 10. Soil material 10 adhering to the edge-cultivation disc 26 is scraped off by the scraper 50, falls off, and is then deflected to the side.

[0035] In the illustrated embodiment, the soil cultivation disc 26 is supported by the disc carrier 30 in a manner defined and fixed with respect to the angles of attack W1 and W2. In an alternative embodiment, the disc carrier could be constructed with two parts that are movable or adjustable relative to each other, so that at least one of the angles of attack W1 and W2 is variable. Changing the first angle of attack W1 primarily affects the radius R and the deflection effect. Changing the second angle of attack W2 primarily affects the inclination of the side edge 38.

[0036] Finally, it should be noted that the preceding directional specifications refer to the compactor's longitudinal direction L, which was considered specifically with regard to 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 its transverse direction Q, and which is also orthogonal to a roller rotation axis D, as considered in conjunction with an edge-processing device 24.

Claims

1. 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 side 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 compressor transverse direction (Q) in the compressor longitudinal direction (L).

2. Soil compactor according to claim 1, characterized in that the first angle of attack (W1) is in the range of 5°-15°.

3. Soil compactor according to claim 1 or 2, characterized in that the first angle of attack (W1) is variable.

4. Soil compactor according to one of 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).

5. Soil compactor according to one of 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).

6. Soil compactor according to claim 5, characterized in that the second angle of attack (W2) is in the range of 25°-35°.

7. Soil compactor according to claim 5 or 6, characterized in thatthe second angle of attack (W2) is variable.

8. 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).

9. Soil compactor according to one of 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).

10. Soil compactor according to one of claims 1-9, characterized in thatthe 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).

11. 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.

12. Soil compactor according to claim 10 or 11, characterized in thatthe edge processing disc (26) has essentially the same thickness between the edge processing surface (46) and the deflection surface (42) in all circumferential and radial areas.

13. Soil compactor according to one of claims 1-12, characterized in that a scraper (50) is assigned to the edge processing disc (26) and extends over 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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