Ground compactor

Abstract

The invention relates to a floor compactor for compacting a floor material (10), comprising at least one compactor roller (22) which can be rotated on a machine frame about a roller axis of rotation (W) which extends substantially orthogonally to a compactor longitudinal direction (L) and to a compactor height direction (H) and substantially in a compactor transverse direction (Q), the compactor roller (22) has associated therewith an edge treatment device (24) for treating a side edge (38) of the compacted floor material (10), the edge treatment device (24) comprising an edge treatment disk (26) which is rotatably supported on a disk carrier (30) about an edge treatment axis of rotation (K), characterized in that in the compactor longitudinal direction (L), the edge treatment disk (26) is rotatably supported on the disk carrier (30) about an edge treatment axis of rotation (K). The edge treatment axis of rotation (K) is or can be adjusted at a first angle of attack (W1) with respect to the compactor transverse direction (Q).

Description

Technical Field

[0001] The present invention relates to a ground compactor for compacting ground materials (such as asphalt materials), which includes at least one compactor roller rotatable on a frame around a roller rotation axis, the roller rotation axis being substantially orthogonal to the longitudinal direction and the height direction of the compactor, and extending substantially along the transverse direction of the compactor, the compactor roller having an edge processing device associated therewith for processing the side edges of the compacted ground materials, wherein the edge processing device includes an edge processing disk rotatably supported on a disk carrier around the edge processing rotation axis. Background Art

[0002] Such a soil compactor is known from DE 29 27 883 A1. In this soil compactor, the edge treatment axis of rotation is located in a plane spanned by the transverse direction of the compactor and the height direction of the compactor and can be adjusted in this plane, i.e. positioned at different angles of attack relative to the transverse direction of the compactor. This makes it possible to change the angle of inclination of the side edge of the compacted soil treated with the edge treatment disc by squeezing the soil material.

[0003] EP 3 926 096 A1 discloses a soil compactor in which a compactor roller is assigned an edge processing device having an edge processing disc rotatable about an edge processing rotation axis. The edge processing rotation axis is oriented parallel to the rotation axis of the compactor roller. In order to remove soil material separated by the edge processing disc from the processed side edge when processing the side edge of the compacted soil, the edge processing disc is assigned a chip deflector which is arranged behind the edge processing disc with respect to the working movement direction of the compactor. Summary of the invention

[0004] An object of the present invention is to provide a ground compacting machine having improved edge handling characteristics.

[0005] According to the present invention, this object is achieved by a ground compactor for compacting ground materials, the ground compactor comprising at least one compactor roller rotatable on a frame around a roller rotation axis, the roller rotation axis being substantially orthogonal to the longitudinal direction and the height direction of the compactor, and extending substantially along the transverse direction of the compactor, the compactor roller having an edge processing device associated therewith for processing the side edges of the compacted ground materials, wherein the edge processing device comprises an edge processing disk rotatably carried on a disk carrier around the edge processing rotation axis.

[0006] The soil compacting machine according to the invention is characterized in that the edge preparation axis of rotation is adjusted or adjustable in the longitudinal direction of the compacting machine at a first angle of attack relative to the transverse direction of the compacting machine.

[0007] By adjusting the edge treatment rotation axis at the first angle of attack, it is fundamentally ensured that the edge treatment rotation axis is not located in the plane unfolded by the lateral direction of the compactor and the height direction of the compactor. Two advantages that significantly improve the edge treatment characteristics are achieved by this orientation. On the one hand, one side of the edge treatment disc is facing away from the side edge of the ground material to be treated, thereby producing a deflection effect, by which the ground material separated from the area of ​​the side edge during the edge treatment process is deflected laterally in the direction away from the side edge. Therefore, the edge treatment disc itself acts in the manner of a plow or deflector during the edge treatment process performed by it. On the other hand, in the transition from the side edge of the ground material treated by the edge treatment disc to the surface of the ground material next to the area located laterally to the side edge, a curve transition formed by the circular curvature of the peripheral edge of the edge treatment disc is generated by this adjustment of the edge treatment rotation axis. The radius of curvature of this curve transition increases with the increase of the first angle of attack. As a result, a sharp (e.g. right-angled) transition from the side edge to the substantially horizontally oriented surface of the ground material adjacent to it can be avoided. As a result, when ground material (e.g. asphalt material) is attached to this area during subsequent work, a complete connection is achieved (particularly in the area where the side edge transitions into the horizontally oriented surface) and the formation of cavities that are not filled with the applied ground material during subsequent work is avoided.

[0008] If the first angle of attack is in the range of 5° to 15°, a sufficiently strong deflection effect and a sufficiently large radius of curvature can be achieved, for example, in the transition region of the processed side edge to the adjoining region of the floor material.

[0009] For example, in order to be able to appropriately adjust the positioning of the floor treatment disc to the height of the side edge to be treated, it is proposed that the first angle of attack is variable.

[0010] In order to effectively deflect ground material separated during side edge processing, it is recommended to adjust the edge processing rotation axis starting from the disc carrier in a direction away from at least one compactor roller at a first attack angle relative to the transverse direction of the compactor in a working movement direction of the compactor essentially parallel to the longitudinal direction of the compactor.

[0011] When treating the side edges of the ground material to deflect the separated ground material and produce a rounded transition, the above-mentioned effect of the edge treatment disc can be supported by the fact that the edge treatment rotation axis is adjusted or adjustable in the height direction of the compactor relative to the transverse direction of the compactor at the second angle of attack. In particular, such an adjustment with the second angle of attack can also have an influence on the geometry or inclination of the treated side edges.

[0012] For example, the second angle of attack may be in the range of 25° to 35°.

[0013] In order to increase the variability when carrying out such a procedure, it is advantageous if the second angle of attack is variable.

[0014] To obtain downwardly and outwardly inclined side edges, it is proposed to adjust the edge preparation rotation axis starting from the disc carrier in a direction away from at least one compactor roller at a second attack angle relative to the compactor transverse direction in a compactor downward direction substantially parallel to the compactor height direction.

[0015] The edge processing disk is rotatably supported on a disk carrier about the edge processing rotation axis in a radially inward area relative to the edge processing rotation axis and has a circular outer circumferential wheel concentric with the edge processing rotation axis, thereby ensuring constant processing characteristics in the working direction.

[0016] The edge treatment disc may have an edge treatment surface which, on the edge treatment side facing the at least one compactor roller, is at least partially non-orthogonal with respect to the edge treatment rotation axis.With such a geometry, a correspondingly defined geometry of the side edge may be generated.

[0017] Furthermore, the edge treatment disc can have a deflection surface which is at least partially non-orthogonal with respect to the edge treatment axis of rotation on a deflection side facing away from the at least one compactor roller.With such a geometry, the deflection effect produced on the deflection side can be intensified.

[0018] In particular, it can be provided that the edge processing surface is at least partially convexly curved and / or that the deflector surface is at least partially concavely curved.

[0019] In a design which is particularly easy to implement in terms of construction and which is particularly advantageous for both the processing of the side edges and for the deflection of the separated ground material, it can be provided that the edge processing disk has a thickness between the edge processing surface and the deflection surface which is essentially the same in all circumferential and radial regions. Such an edge processing disk can be provided, for example, as a sheet metal profile with an essentially constant thickness. In this way, in particular also in conjunction with the adjustment of the edge processing axis of rotation and the first angle of attack, it can be achieved that the edge processing is a cutting process, a process for separating excess ground material, and not a pressing process which strongly influences the density of the processed ground material in the region of the side edges.

[0020] The edge treatment disc can be assigned a scraper on its edge treatment side facing the compactor roller and / or on its deflection side facing away from the compactor roller for scraping off ground material adhering to the edge treatment disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is described in detail below with reference to the accompanying drawings. The accompanying drawings show:

[0023] Figure 1 shows a side view of a ground compactor having a compactor roller and an edge treatment device assigned thereto;

[0024] Figure 2 shows a detailed perspective view of a compactor roller with an edge treatment device;

[0025] Figure 3 Shown in Figure 2 and Figure 4 A view of the compactor roller with an edge processing device viewed from above in the viewing direction III in FIG.

[0026] Figure 4 Shown in Figure 2 and Figure 3 A view of a compactor roller with an edge processing device viewed from the front in the viewing direction IV in FIG.

[0027] Figure 5 Zoomed in Figure 4 Details in V;

[0028] Figure 6 by Figure 6 a) and Figure 6 The axial view in b) shows the edge processing disk of the edge processing device with the scraper assigned to it. DETAILED DESCRIPTION

[0029] Figure 1 A side view of a ground compactor 12 for compacting ground material 10 is shown. In the illustrated design example, the ground compactor 12 comprises a drive wheel 16 on a rear vehicle 14, which is driven by a drive assembly arranged on the rear vehicle 14, so that the ground compactor 12 can move on the ground material 10 to be compacted along the longitudinal direction L of the compactor. An operating platform 18 is also arranged on the rear vehicle 14. A front vehicle 20 is articulated with the rear vehicle 14, and a compactor roller 22 is rotatably supported on the front vehicle 20 about a roller rotation axis D, which is aligned with the front vehicle 20. Figure 1 The drawing plane is orthogonal to a longitudinal direction L of the compactor, which corresponds essentially to the horizontal direction, and to a height direction H of the compactor, which corresponds essentially to the vertical direction and is essentially orthogonal to the longitudinal direction L of the compactor. Therefore, the roller rotation axis D extends essentially in a transverse direction Q of the compactor. In connection with the compactor roller 22, an edge processing device, which is generally indicated by 24, is provided on at least one axial end region thereof. With this edge processing device 24, the side edge regions of the ground material 10, in particular asphalt material, compacted by the ground compactor 12 can be processed in order to achieve a defined, smooth lateral closure of the compacted ground material 10.

[0030] It should be noted that the ground compactor 12 can be used with Figure 1 The embodiment shown in the figure is constructed in a different manner. For example, a compactor roller can also be included on the rear vehicle 14, which can also be assigned an edge processing device on at least one of its axial end regions. If such a steerable ground compactor has, for example, two compactor rollers supported via a steering frame on the frame, which are spaced apart from each other in the longitudinal direction L of the compactor, then, for example, one of the compactor rollers can 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 ground compactor.

[0031] Refer to the following Figures 2 to 6 The structure of such edge processing device 24 is described in detail.

[0032] The edge processing device 24 comprises an edge processing disc 26 which is rotatably supported in its central region 28 about an edge processing axis of rotation K on a disc carrier 30 and has a circular peripheral edge 32 which is concentric with the edge processing axis of rotation K.

[0033] The disc carrier 30 is fixed to a pivot arm 34 which in turn can be pivoted on a suspension element which rotatably supports the compactor roller 22 on the front vehicle 20, about a pivot axis which is, for example, parallel to the roller rotation axis D of the compactor roller 22. The pivoting of the pivot arm 34 can be achieved, for example, by a piston / cylinder arrangement 36. By pivoting the pivot arm 34, the edge processing device 24 can be pivoted on it (on the Figure 2 The edge processing disk 26 pivots between an active position (as shown) in which the edge processing disk 26 is positioned for processing or producing a smooth cut side edge 38 of the floor material 10 and a raised passive position in which the edge processing disk 26 is positioned above the floor material 10 and therefore does not interact with the floor material 10.

[0034] Figure 3 and Figure 4 It is shown that in the edge processing device 24 the edge processing disc 26 is positioned such that, in particular in the active position, the edge processing axis of rotation K is not parallel to the roller axis of rotation D. Figure 3It is shown that the edge processing rotation axis K is adjusted in the compactor longitudinal direction L at a first angle of attack W1 relative to the compactor transverse direction Q when the compactor roller 22 or the edge processing device 24 is viewed from above in the compactor height direction H which is substantially orthogonal to the compactor transverse direction Q and the compactor longitudinal direction L. Therefore, the edge processing rotation axis K is also not located in a plane spanned by the compactor transverse direction Q and the compactor height direction H, but is adjusted starting from the disc carrier 30 relative to this plane or the compactor transverse direction Q in the compactor working movement direction A which is substantially parallel to the compactor longitudinal direction L. During the edge processing process by means of the edge processing device 24, the ground compactor 12 moves in the compactor working movement direction A. The edge processing rotation axis K is therefore adjusted starting from the disc carrier 30 towards the front based on the compactor working movement direction A.

[0035] By adjusting the edge processing rotation axis K at a first attack angle W1, as Figure 4 As shown, the edge processing disc 26 formed in a substantially shell-like or dome-like manner is positioned so that its deflection side 40 oriented away from the compactor roller 22 or the concavely curved deflection surface 42 formed on the deflection side 40 opens forward according to the first angle of attack W1. At the same time, the edge processing disc 26 is in contact with an edge processing surface 46 on its edge processing side 44 facing the compactor roller, which is formed on the edge processing side 44 and has a convex curvature and contacts the ground material 10 in the radially outer region, thereby processing the side edge 38 by a cutting process or a process of separating the ground material 10 in the region of the side edge 38.

[0036] The treatment of the ground material 10 by means of the edge treatment disc 26 adjusted at the first angle of attack W1 has two important advantages. On the one hand, the edge treatment disc 26, which also rotates about the edge treatment rotation axis K during the edge treatment operation, acts with its concavely curved deflection surface 42 as a deflector or as a plough for the ground material 10 separated in the area of ​​the side edge 38 and guides this ground material 10 outwards, i.e. laterally away from the compactor roller 22. Due to the shell-like structure of the edge treatment disc 26, which preferably has the same thickness in all areas, this effect is particularly effective, because in the lowest area of ​​the edge treatment disc 26 in the height direction, i.e. the area in which it is in contact with the ground material 10 to treat the side edge 38, the edge treatment surface 42 is approximately parallel to the longitudinal direction of the compactor or the working movement direction A of the compactor. The deflection surface 42 protrudes outward away from the compactor roller 22 in the opposite direction of the compactor working movement direction A, so that when the ground compactor 12 and therefore the entire edge processing device 24 moves along the compactor working movement direction A, the separated ground material 10 is moved outward through the corresponding lower area, that is, away from the deflection surface 42 bent by the compactor roller 22 in the direction of the processed side edge 38.

[0037] A second effect of adjusting the edge treatment disk 26 at the first angle of attack W1 is that, due to the rounded geometry of the peripheral edge 32, a curvature-shaped transition with a radius R is formed in the transition from the side edge 38 to the substantially horizontally oriented surface area 48 of the floor material 10 adjoining thereto. The radius R increases with increasing first angle of attack W1.

[0038] By forming such a curved transition between the side edge 38 of the floor material 10 and the surface area 48 adjoining it, a sharp-edged transition, such as a rectangular transition, is avoided. This has the particular advantage that when floor material, such as bituminous material, is to be spread in this area (i.e. adjacent to the side edge 38 or in the surface area 48) during further work, cavities that are not filled with this material are avoided in this transition area.

[0039] The effect introduced by adjusting the edge processing rotation axis K at the first angle of attack W1 can be utilized more effectively if the edge processing rotation axis K is also at the second angle of attack W2 and is adjusted starting from the disc carrier 30 in the compactor height direction H downwards relative to the compactor transverse direction Q, i.e. in the compactor downward direction U substantially parallel to the compactor height direction H. By means of this adjustment, an orientation of the edge processing rotation axis K can also be achieved at the second angle of attack W2 such that it is neither in a substantially horizontally oriented plane spanned by the compactor transverse direction Q and the compactor longitudinal direction L nor in a substantially vertically oriented plane spanned by the compactor transverse direction Q and the compactor height direction H.

[0040] Since in the above-mentioned edge processing device 24, the edge processing disc 26 designed in a dish-like or shell-like manner (for example, having such a structure and also designed in a truncated cone shape) also assumes the function of a lateral deflector for separating the ground material 10, there is a risk in principle that the ground material 10 prepared, for example, from asphalt material will adhere to the edge processing disc 26, in particular to its deflection surface 42. In order to avoid this, the edge processing disc 26 can be assigned with a Figure 6 The scraper 50 shown. The scraper 50 can be fixed, for example, on the disc carrier 30 and can overlap with the edge treatment disc 26, in particular in its radially outward region on the deflection side 40 and / or at least in the radially outward region (i.e. the region that mainly contacts the floor treatment material 10) on the edge treatment side 44 from the radial outside to the radial inside. The floor material 10 adhering to the edge treatment disc 26 is scraped off by the scraper 50, falls off, and is then deflected to the side.

[0041] In the design shown, the ground treatment disc 26 is supported by the disc carrier 30 in a defined, unchangeable manner with respect to the angles of attack W1, W2. In another alternative design, the disc carrier can consist of two parts that can be moved or adjusted relative to each other, so that at least one of the angles of attack W1, W2 can be changed. By changing the first angle of attack W1, the radius R and the deflection effect can be mainly influenced. By changing the second angle of attack W2, the inclination of the side edge 38 can be mainly influenced.

[0042] Finally, it should be pointed out that in the directional information given above, the longitudinal direction L of the compactor is taken into account, in particular for a ground compactor 10 moving straight forward. When the ground compactor 10 is turning, the longitudinal direction L of the compactor can be regarded, for example, as an extension direction orthogonal to the height direction H of the compactor and to the transverse direction Q of the compactor, which is also orthogonal to the roller rotation axis D considered in conjunction with the edge processing device 24.

Claims

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

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

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

4. The ground compacting machine according to any one of claims 1 to 3, characterized in that: Starting from the disc carrier (30) in a direction away from at least one compactor roller (22), the edge processing rotation axis (K) is adjusted at a first attack angle (W1) relative to the compactor transverse direction (Q) in a compactor working movement direction (A) substantially parallel to the compactor longitudinal direction (L).

5. The ground compacting machine according to any one of claims 1 to 4, characterized in that: In the height direction (H) of the compactor, the edge preparation rotation axis (K) is adjusted or adjustable at a second angle of attack (W2) relative to the transverse direction (Q) of the compactor.

6. The ground compacting machine according to claim 5, characterized in that: The second attack angle (W2) is in the range of 25° to 35°.

7. The ground compactor according to claim 5 or 6, characterized in that: The second angle of attack (W2) is variable.

8. The ground compacting machine according to claim 1, characterized in that: Starting from the disc carrier (30) in a direction away from at least one compactor roller (32), the edge processing rotation axis (K) is adjusted at a second attack angle (W2) relative to the compactor transverse direction (Q) in a compactor downward direction (U) substantially parallel to the compactor height direction (H).

9. The ground compacting machine according to any one of claims 1 to 8, characterized in that: The edge processing disc (26) is rotatably supported on the disc carrier (30) around the edge processing rotation axis (K) in an area (28) radially inward relative to the edge processing rotation axis (K) and has a circular outer circumferential wheel (32) concentric with the edge processing rotation axis (K).

10. The ground compacting machine according to any one of claims 1 to 9, characterized in that: The edge treatment disc (26) has an edge treatment surface (46), which is at least partially non-orthogonal to the edge treatment rotation axis (K) on the edge treatment side (44) facing at least one compactor roller (22), and / or the edge treatment disc (26) has a deflection surface (42), which is at least partially non-orthogonal to the edge treatment rotation axis (K) on the deflection side (40) facing away from at least one compactor roller (22).

11. The ground compacting machine according to claim 10, characterized in that: The edge treatment surface (46) is at least partially convexly curved, and / or the deflector surface (42) is at least partially concavely curved.

12. The ground compacting machine according to claim 10 or 11, characterized in that: The edge treatment disc (26) has a thickness substantially the same in all circumferential and radial regions between the edge treatment surface (46) and the deflector surface (42).

13. The ground compacting machine according to any one of claims 1 to 12, characterized in that: The edge treatment disc (26) is assigned a scraper (50) which overlaps on its edge treatment side (44) facing the compactor roller (22) and / or on its deflection side (40) facing away from the compactor roller (22) for scraping off ground material (10) adhering to the edge treatment disc (26).

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