EP3951058B1 - Soil processing roller for soil processing machine - Google Patents

Description

The present invention relates to a soil tillage roller for a soil tillage machine according to the preamble of claim 1.

Soil tillage machines constructed with soil tillage rollers are used for tilling the subsoil in various areas. For example, such soil tillage machines are used as soil compactors in road construction, for example, to compact asphalt material or the subsoil lying under the asphalt material, with the compactor rollers provided in such soil tillage machines working as soil compactors having an unstructured, i.e. essentially smooth and have closed working outside. For other work processes, roller tools, such as pad feet or chisels, can be provided on the tillage rollers to provide structured working outer sides.

From the DE 34 27 675 A1 a soil tillage machine is known, the compactor roller of which carries roller tools designed in the form of pad feet on a roll jacket, so that the soil tillage roller is basically constructed with a structured working outside. In order to be able to use the tillage roller of this known tillage machine in work areas that require a smooth, unstructured working outside, several casing segments following one another in the circumferential direction can be fixed by screwing to the roller casing. When the casing segments are fixed to the soil tillage roller, they form a smooth, ie essentially unstructured, working outer side surrounding the soil tillage roller with the padding feet provided on its roller shell. Depending on whether the compactor rollers are surrounded by the casing segments in this known soil cultivating machine or not, the working outside can be rotated either through the respective roller casing or on a frame carried tillage rollers or provided by the shroud segments surrounding the roller mantle.

A tillage roller according to the preamble of claim 1 is from CN 202 440 746 U known. In this known soil tillage roller, fastening elements projecting radially inwards are fixedly arranged on axially oriented end faces of each segment shell. In the circumferential direction between two such fastening elements, a passage opening is formed on a shoulder protruding axially from a respective end face, through which a bolt-like fastening element, which is not fixedly arranged on a respective segment shell, is guided to fix a respective segment shell on a roll shell.

From the EP 3 498 919 Type 2 is a soil tillage roller, in which segment shells of working shell segments are fixed to tool carriers extending in the direction of a roller axis of rotation by means of fastening bolts to be passed through openings provided in the longitudinal edge regions of the segment shells.

The DE 10 2013 208 261 A1 discloses a soil tillage roller in which projection rings extending on a roller shell about a roller axis of rotation are fixed by fastening bolts to be guided through the projection rings and inserted into openings in the roller shell.

It is the object of the present invention to provide a soil tillage roller for a soil tillage machine, which can be easily adapted to different work processes.

According to the invention, this object is achieved by a soil tillage roller for a soil tillage machine according to claim 1, comprising a roller body rotatable about a roller axis of rotation with a support structure for rotatably mounting the roller body and with a support casing carried radially on the outside of the support structure, further comprising a support casing on the outside abutting working shell providing a working outer side of the soil tillage roller and having a plurality of working shell segments which follow one another in the circumferential direction, each working shell segment having a segment shell and segment shells which are supported on each segment shell on one of the carrier shell outside of the carrier shell and/or are supported on the carrier shell outside inner side a plurality of fastening elements protruding radially inwards is arranged fixedly, and wherein in the carrier casing in association with each fastening element a fastening element reach-through opening is provided and each fastening element reaching through a fastening element reach-through opening is arranged on a carrier casing inner side of the carrier casing for attachment to the or with respect to the roller body protrudes.

The soil-cultivation roller constructed according to the invention differs fundamentally from the soil-cultivation rollers known from the prior art in that the shell, which is supported on a support structure so that it can rotate about the roller axis of rotation, is not a roller shell that provides a working outside, but rather a carrier shell on which the working shell, which is used for a work process to be carried out provides a working outside, defined or can be defined as a separate module.

This means that with a soil tillage roller constructed according to the invention, the carrier shell does not provide the working outside in any operating state for tilling soil, and that in every operating state for tilling soil the working outside is to be fixed by or on the roller body as a separate assembly Work coat is provided.

As a result, the carrier jacket can be provided with structures that enable a defined and stable fixing of the working jacket built up with several working jacket segments, without having to take into account that such structures would exist if they were provided on a working outside of a soil tillage roller , on the one hand could impair the processing result and on the other hand could be subject to wear and tear that would impair their functionality.

In order to prevent the machining process from being impaired by structures that could be formed in the ground being worked, such as asphalt material, it is proposed that no openings penetrating the segment shells be provided on the segment shells in the area of the fastening elements. This means that the segmented shells are also and particularly closed in those areas in which fastening elements are provided on them and thus provide a continuous, uninterrupted outer surface.

For a stable fixing of the working jacket segments on the roller body, it is further proposed that at least one fastening element is fixedly arranged on the segment shells in at least three mutually spaced connection areas in the direction of the roller axis of rotation.

For this purpose, at least two fastening elements arranged at a circumferential distance from one another can be arranged in a fixed manner, for example, in end connection areas lying on axial end areas of a respective segmented shell.

In order in particular to be able to fix the segmented shells in their edge regions in the circumferential direction, it is further proposed that in the end connection regions a circumferential distance between the fastening elements is greater than a circumferential distance between a respective fastening element and a longitudinal edge of the segmented shell that is directly adjacent to it .

Furthermore, for a stable fixing of the working casing segments on the roller body in at least one center connection area located between the axial end areas of a respective segment shell, a fastening element can be arranged fixed, for example in a peripheral center area of the segment shell. It should be pointed out that such a central connection area does not necessarily have to be positioned exactly in the axial longitudinal center of a respective segment shell.

In order to fix the working casing segments on the roller body, a fastening area can be arranged in a fixed manner in association with at least one, preferably every fastening element on the inside of the carrier casing.

In order to enable a fastening interaction between a fastening area and a fastening element provided on a segmented shell in a simple manner, it is proposed that each fastening area be arranged fixed on the carrier jacket axially following a fastening element reach-through opening. The consequence of this is that a fastening element reaching through a fastening element reach-through opening can be positioned directly next to an associated fastening area and can thus be fixed to it.

For a simple and stable design, at least one fastening area can be provided on the carrier structure in association with a fastening element arranged in a central connection area.

For this purpose, for example, the carrier structure can comprise at least one carrier disk connected to the inside of the carrier casing, and at least one, preferably each fastening region provided in association with a fastening element arranged fixed in a central connection region can be provided in a radially outer region of a carrier disk.

As an alternative or in addition to the provision of one or more fastening areas by the carrier structure, at least one fastening area can comprise a fastening projection protruding radially inwards on the inside of the carrier jacket.

For a connection that is easy to produce, stable and also easy to detach, a fastening element can be fixed by a screw connection to at least one, preferably every fastening area.

A stable connection of the working casing segments to the roller body can be further supported in that at least one of the fastening elements is designed like a plate and is arranged to extend in the circumferential direction.

For example, at least one plate-like fastening element extending in the circumferential direction can be arranged in at least one central connection area.

Alternatively or additionally, at least one plate-like fastening element extending in the circumferential direction can be arranged in at least one end connection area.

In a further embodiment, at least one fastening element, preferably a plurality of fastening elements, can be designed in the manner of a bolt and arranged to extend essentially radially.

In this case, a stable connection to the carrier jacket can be achieved, for example, in that at least one bolt-like and essentially radially extending fastening element is formed with an external thread. Nuts screwed onto such an external thread can thus be used to fix the support casing.

In a further embodiment, at least one, preferably each bolt-like and essentially radially extending fastening element can have a bolt head lying at a distance from the segment shell and cooperating with a clamping jaw arrangement to fix the segment shell on the carrier jacket.

Such a clamping jaw arrangement can comprise two mutually opposite clamping jaws, which grip the bolt head of at least one bolt-like and essentially radially extending fastening element and are fixed to one another.

In order to ensure a stable, play-free fixation on the roller body, it is further proposed that the at least one bolt head of a bolt-like and essentially radially extending fastening element encompassing clamping jaws of a clamping jaw arrangement are supported on the inside of the carrier casing and one of the at least one of these encompassed Generate a force acting radially inward on the bolt head.

If at least one clamping jaw arrangement interacts with the bolt heads of two bolt-like and essentially radially extending fastening elements arranged on the segment shells that are immediately adjacent to one another in the circumferential direction of the working casing segments, it is ensured that the working casing segments can be fixed to the carrier casing near their edge regions in the circumferential direction.

For example, at least one bolt-like and essentially radially extending fastening element can be arranged in a stationary manner in at least one end connection region.

In order to interact with the fastening elements, it can be provided that at least one, preferably each fastening element through-opening is slit-like and/or elongated essentially in the circumferential direction.

For a stable connection of bolt-like fasteners, they can have a z. B. fixed by welding, have radially expanded bolt foot. In order to be able to accommodate fastening elements shaped in this way in these associated fastening element passage openings, it is further proposed that at least one fastening element passage opening, through which a bolt-like and essentially radially extending fastening element extends, is widened in a length region transversely to its direction of longitudinal extension to accommodate a bolt foot of this Bolt-like fastening element penetration opening and essentially radially extending fastening element. When attaching circularly curved working jacket segments constructed with such fastening elements to the carrier jacket, the bolt-like fastening elements can be guided with their bolt heads through the sections of the access openings adjoining the extended length areas until the bolt feet enter the respective extended length area.

In a further alternative embodiment for fixing several or all of the working shell segments that follow one another in the circumferential direction on the roller body, fastening elements of at least two, preferably all of the working shell segments that follow one another in the circumferential direction and that reach through a fastening element reach-through opening can be clamped towards one another in the circumferential direction by a circumferential clamping element that is arranged radially inside the carrier shell .

The working shell can, for example, comprise at least four, preferably at least six, working shell segments. This ensures that each of the circularly curved working jacket segments can be brought up to the carrier jacket from radially outside and can be guided with the fastening elements provided on them through the associated fastening element reach-through openings in the carrier jacket.

In particular for carrying out compaction processes in road construction, such as for compacting asphalt material or the subsoil lying under such asphalt material, it is advantageous if the working jacket segments provide an essentially unstructured, closed working outside of the working jacket. In other work processes, such as compacting earth material or the like or breaking up solid subsoil, it is advantageous if radially outwardly protruding roller tools are arranged on the working casing segments to provide a structured working outer side of the working casing.

The invention also relates to a soil tillage machine with at least one soil tillage roller constructed according to the invention.

Fig. 1

eine perspektivische Ansicht einer Bodenbearbeitungsmaschine mit einer Bodenbearbeitungswalze;

Fig. 2

die Bodenbearbeitungswalze der Bodenbearbeitungsmaschine der Fig. 1 in perspektivischer Ansicht;

Fig. 3

die Bodenbearbeitungswalze der Fig. 2 mit einem von einem Walzenkörper der Bodenbearbeitungswalze losgelösten Arbeitsmantelsegment eines an dem Walzenkörper vorgesehenen Arbeitsmantels;

Fig. 4

ein an seiner Innenseite betrachtetes Arbeitsmantelsegment;

Fig. 5

den Walzenkörper der Bodenbearbeitungswalze der Fig. 2 und 3 von radial außen betrachtet;

Fig. 6

eine Axialansicht des Walzenkörpers der Fig. 5;

Fig. 7

eine mit bolzenartig ausgebildeten Befestigungsorganen zusammenwirkende Klemmbackenanordnung zur Festlegung eines Arbeitsmantelsegments am Walzenkörper;

Fig. 8

ein vom Walzenkörper radial losgelöst dargestelltes Arbeitsmantelsegment;

Fig. 9

einen axialen Endbereich einer Bodenbearbeitungswalze mit einem an dem Walzenkörper durch Klemmbackenanordnungen der Fig. 7 festgelegten Arbeitsmantelsegment;

Fig. 10

eine perspektivische Ansicht des axialen Endbereichs einer Bodenbearbeitungswalze mit einer alternativen Anbringungsart für Arbeitsmantelsegmente;

Fig. 11

ein Arbeitsmantelsegment der Bodenbearbeitungswalze der Fig. 10 an seiner Innenseite betrachtet;

Fig. 12

bolzenartige Befestigungsorgane von Arbeitsmantelsegmenten, wie in Fig. 11 dargestellt;

Fig. 13

eine der Fig. 10 entsprechende Darstellung einer weiteren alternativen Ausgestaltungsart zur Festlegung von Arbeitsmantelsegmenten an einem Walzenkörper;

Fig. 14

ein Arbeitsmantelsegment der Bodenbearbeitungswalze der Fig. 13 an seiner Innenseite betrachtet;

Fig. 15

einen axialen Endbereich der Bodenbearbeitungswalze der Fig. 13;

Fig. 16

eine der Fig. 10 entsprechende Darstellung mit einer weiteren alternativen Ausgestaltungsart zur Festlegung von Arbeitsmantelsegmenten an einem Walzenkörper;

Fig. 17

eine Detailansicht der Bodenbearbeitungswalze der Fig. 16;

Fig. 18

eine der Fig. 10 entsprechende Darstellung mit einer weiteren alternativen Ausgestaltungsart zur Festlegung von Arbeitsmantelsegmenten an einem Walzenkörper.

Fig. 19

ein Arbeitsmantelsegment der Bodenbearbeitungswalze der Fig. 18 an seiner Innenseite betrachtet;

Fig. 20

eine der Fig. 2 entsprechende Darstellung einer Bodenbearbeitungswalze mit einer anderen Ausgestaltungsart eines einen Walzenkörper umgebenden Arbeitsmantels;

Fig. 21

eine weitere eine der Fig. 2 entsprechende Darstellung einer Bodenbearbeitungswalze mit einer anderen Ausgestaltungsart eines einen Walzenkörper umgebenden Arbeitsmantels.

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

1

a perspective view of a soil cultivating machine with a soil cultivating roller;

2

the tillage roller of the tillage machine 1 in perspective view;

3

the tillage roller 2 with a working jacket segment, detached from a roller body of the soil tillage roller, of a working jacket provided on the roller body;

4

a work jacket segment viewed from its inside;

figure 5

the roller body of the tillage roller 2 and 3 viewed from radially outside;

6

an axial view of the roller body figure 5 ;

7

a clamping jaw arrangement cooperating with bolt-like fastening elements for fixing a working casing segment on the roller body;

8

a working jacket segment shown radially detached from the roller body;

9

an axial end portion of a tillage roller with a on the roller body by jaw arrangements of 7 specified work coat segment;

10

a perspective view of the axial end portion of a soil tillage roller with an alternative type of attachment for working shell segments;

11

a working shell segment of the tillage roller 10 viewed on its inside;

12

Bolt-like fasteners of work jacket segments, as in 11 shown;

13

one of the 10 Corresponding representation of a further alternative embodiment for fixing working jacket segments on a roller body;

14

a working shell segment of the tillage roller 13 viewed on its inside;

15

an axial end portion of the tillage roller 13 ;

16

one of the 10 Corresponding representation with a further alternative embodiment for fixing working jacket segments on a roller body;

17

a detailed view of the tillage roller 16 ;

18

one of the 10 Corresponding representation with a further alternative embodiment for defining working shell segments on a roller body.

19

a working shell segment of the tillage roller 18 viewed on its inside;

20

one of the 2 Corresponding representation of a soil tillage roller with another embodiment of a working jacket surrounding a roller body;

21

another one of the 2 Corresponding representation of a soil tillage roller with another embodiment of a working jacket surrounding a roller body.

In 1 a soil cultivating machine is generally denoted by 10 . The soil tillage machine 10 includes a rear carriage 12 with a drive unit provided thereon and wheels 14 driven by the drive unit, for example a diesel internal combustion engine.

A soil tillage roller, generally designated 20, is rotatably supported about a roller axis of rotation W on a front carriage 18, which is pivotably connected to the rear carriage 12. In the 2 The soil tillage roller 20 shown in more detail is constructed with a roller body 22 rotatably mounted on the front carriage 18 . In the exemplary embodiment shown, the roller body 22 comprises a carrier structure 28, which is also generally referred to as blanks and is arranged at an axial distance from one another and is constructed as a carrier structure 28, which is rotatably supported about the roller axis of rotation W via respective bearing areas on the lateral frame areas 30, 32 of the front end 18. In their outer peripheral area, the two carrier disks 24, 26 are fixed, for example by welding, to a carrier jacket 34 that is essentially cylindrical and closed in the manner of a ring.

A working jacket, generally designated 38 , is provided on a carrier jacket outside 36 . In the exemplary embodiment shown, the working jacket 38 comprises six working jacket segments 40 which follow one another in the circumferential direction and directly adjoin one another and which have segment shells 42 which are curved and adapted to the circularly curved outer peripheral contour of the carrier jacket 34 . One recognizes in 2 that the segment shells 42 engage in one another in the manner of teeth in their segment shell longitudinal edges 44 adjoining one another in the circumferential direction. Alternatively, the segmented shell longitudinal edges 44 could also be designed to extend in a straight line in the direction of the roller axis of rotation W.

In this exemplary embodiment shown, the compactor roller 20 is designed as a so-called ground breaker roller and for this purpose has a plurality of roller tools 48 on a working outer side 46 of the working casing 38 on each of the working casing segments 40 . In the example shown, these roller tools are designed with a change holder 50 fixed to a respective working casing segment 40, for example by welding, and a change tool 52 in the form of a chisel accommodated in the change holder.

Each of the working jacket segments 40, which are preferably identical to one another and are essentially mirror-symmetrical with respect to a length center, has four connecting regions 54, 56, 58, 60 at an axial distance from one another in the direction of the roll axis of rotation W. In each of these four connection areas 54, 56, 58, 60, the working jacket segments 40 can be fixed to the carrier jacket 34 of the roller body 22, so that a stable connection to the roller body 22 is ensured over the entire axial length of the working jacket segments 40. The connection areas 54, 60 located in the axial end areas 62, 64 of the working jacket segments 40 each form an end connection area 66 or 68, respectively, while the connection areas 56, 58 positioned closer to the mid-length area of the working jacket segments 40 each form a center connection area 70, 72 .

In each of the connecting areas 54, 56, 58, 60, one or more fastening elements 76 are provided on a shell segment inner side 74 of the segment shells 42 facing the carrier jacket outer side 36. The fastening members 76 provided in the central connecting regions 70, 72 are plate-like and fixed, for example by welding, to the segment shells 42 in such a way that they extend essentially in the circumferential direction and radially inwards. In association with these plate-like fastening elements 76 arranged in the central connection areas 70, 72 and extending essentially in the circumferential direction, slot-like fastening element passage openings 78 extending essentially in the circumferential direction are provided in the carrier casing. These are, as in figure 5 to recognize, arranged axially directly adjacent to a respective support disk 24, 26 of the support structure 28.

A fastening area 80 is formed on the roller body in association with each such slit-like fastening element reach-through opening 78 or in association with each fastening element 76 to be positioned through such a fastening element reach-through opening 78 of the central connecting regions 70, 72, which fastening element 76 is radially overlapped. In the illustrated In one example embodiment, these fastening areas 80 are formed on the radially outer area of a respective carrier disk 24 or 26 and each comprise two openings 82, 84, for example provided with an internal thread 72, 74 are passed through the fastening element through-openings 78 provided axially directly next to the carrier disks 24, 26, so that they protrude radially inwards on an inner side 86 of the carrier jacket. Screw bolts can be passed essentially axially through openings 88, 90 provided in these fastening elements 76 and screwed into the openings 82, 84 of the respectively associated fastening region 80. In this case, for example, plate springs or retaining rings or the like can be positioned between the screw heads and the respective fastening elements 76 in order to make it more difficult or to prevent the screw bolts from coming loose.

One recognizes in figure 5 that the fastening element passage openings 78 provided directly next to a respective carrier disk 24, 26 are positioned with respect to the carrier disks 24, 26 on the side facing away from one another axially, so that the fastening elements 76 of the central connecting areas 70, 72 can be easily fixed to the carrier disks 24, 26 from the axial outside by means of the screw bolts.

The fastening elements 76 provided in the end connection areas 66, 68 are designed like bolts and extend essentially radially inwards on the inner side 74 of the working jacket segment. As in 7 As can be seen, these bolt-like fastening elements 76 are constructed with a bolt foot 94 which is expanded with respect to a bolt shank 92 and which can be fixed by welding to a respective segment shell 42, so that the bolt-like fastening elements 76 of the end connection regions 66, 68 are also stationary on the segment shells 42 are arranged. It can be seen here that in the area of none of the fastening elements 76 in the respective supporting Segment shell 42 an opening is formed, for example, in order to be able to pass a respective fastening element through a segment shell 42. As a result, particularly in those areas in which fastening elements 76 are arranged on the segment shells 42, no openings are formed on the outside of the segment shells 42 that is exposed to the outside, for example, that are subject to wear or impair work results. In the exemplary embodiment shown, openings are formed in the segment shells 42 only in the region of the roller tools 48 in order to have access to the changing tools 52 from the inside and thus to be able to detach them from the changing holders 50 . However, these openings are covered on the outside by the change holder 50 so that there is no risk of material penetrating through these openings or there is no risk of wear in the area of these openings.

In association with the bolt-like fastening elements 76 provided in the end connection areas 66, 68, slot-like bolt element penetration openings 78 which are essentially elongated in the circumferential direction are provided in the carrier jacket 34. These through-openings 78 for fastening members, which are arranged in the axial end regions of the carrier jacket 34, have an expansion in a longitudinal region 96 lying in the middle of their length. The bolt feet 94 of the bolt-like fastening elements 76 to be positioned in these fastening element reach-through openings 78 can be accommodated in these extensions.

As in 7 As can be seen, these bolt-like fastening elements 76 each have a bolt head 98 which is enlarged with respect to the bolt shank 92 on their radially inwardly protruding end regions. The bolt-like fastening elements 76 protrude radially inwards with their respective bolt shank 92 and bolt head 98 on the inside 36 of the carrier casing and are encompassed in these areas by a clamping jaw arrangement 100 assigned to a pair of such bolt-like fastening elements 76 . Each clamping jaw arrangement 100 has two clamping jaws 104, 106 which are axially opposite one another and are to be fixed to one another by screw bolts 102. The The two bolt-like fastening members 76 encompassed by such a clamping jaw arrangement 100 are each associated with different working jacket segments 40 that are directly adjacent to one another. As in 4 As can be seen, for this purpose the bolt-like fastening elements 76 arranged in a respective end connection region 66, 68 are arranged close to the longitudinal edges 44 of the segment shells, so that the bolt-like fastening elements 76 arranged on adjacent working jacket segments 40 and encompassed by a common clamping jaw arrangement 100 are mutually exclusive are closer than the two bolt-like fastening elements 76 arranged in a respective end connection area 66, 68 of the working shell segments 40.

Whenever a pair of clamping jaws 104, 106 grips around such bolt-like fastening elements 76, these rest against the inside 74 of the segment shells of the associated segment shells 42 and thereby generate a force acting on the gripped, bolt-like fastening elements 76 radially inwards, so that the working jacket segments 40 firmly against the carrier shell outside 36 are drawn. For this purpose, the bolt-like fastening elements 76 have respective cone-shaped wedge surfaces 108 on their bolt heads 98, which interact with respective wedge surfaces 110 on the clamping jaws 104, 106 to generate this radially inwardly directed force.

The Figures 10 to 12 show an alternative embodiment of fixing the working jacket segments 40 in their end connection areas 66, 68 on the roller body 22. In this embodiment, too, the fastening elements 76 arranged in the end connection areas 66, 68 are designed like bolts and extend essentially radially inwards or are fixed to the segment shells 42 . The bolt shank 92 extending from the respective bolt foot 94 is externally threaded. A cover plate 112 resting on the inside 86 of the carrier shell is first pushed onto the bolt shanks 92 of two bolt-like fastening elements 76 which are immediately adjacent in the circumferential direction and project radially inwards beyond the carrier shell 34 . Subsequent to the externally threaded bolt shanks 92 are nuts 114 unscrewed. Here, too, disk springs or locking rings or the like can be provided between the cover plate 112 and the nuts 114 positioned on the inside thereof in order to make it more difficult or prevent the nuts 114 from becoming detached.

In the central connection areas 70, 72, the working shell segments 40 are formed as described above with reference to FIG Figures 2 to 9 described in detail, so that reference is made to these statements.

Another alternative embodiment for defining the working shell segments 40 on the roller body 22 is in the Figures 13 to 15 shown. In this embodiment, the fastening members 76 provided in the end connection areas 66, 68 are plate-like or strap-like and extend radially inwards on the inside 74 of the segment shell. In association with these plate-like fastening elements 76 of the end connection regions 66, 78, slot-like fastening element reach-through openings 78 are formed in the carrier casing 34, which, due to the plate-like design of the fastening elements 76, do not necessarily have to have the extended length regions recognizable in the illustrations described above.

Several plate-like fastening projections 115 of the fastening regions 80 extending radially inwards are provided in succession in the circumferential direction on the inner side 86 of the carrier casing, for example fixed by welding. Such a plate-like fastening area 80 is provided, for example, in association with two plate-like fastening projections 115 of work jacket segments 40 directly adjacent to one another. Through the assigned plate-like fastening projections 115 arranged radially overlapping, plate-like fastening elements 76 extend essentially axially and are screwed into internally threaded openings of the plate-like fastening areas 80 The working jacket segments 40 can be fixed to the roller body 22 in their two end connection areas 66 , 68 by means of bolts.

In this embodiment, too, in the central connection areas 70, 72, the working casing segments 74 can be arranged in the previously described with reference to FIG Figures 2 to 9 be set on the roller body 22 in a manner described in detail.

A modification of the Figures 13 to 15 illustrated type of connection of the working shell segments 40 to the roller body 22 is in the Figures 16 to 17 shown. In this type of embodiment, the plate-like fastening elements 76 of the end connection areas, which reach through the respective fastening element reach-through openings 78 , are not screwed onto the fastening areas provided on the carrier casing 34 . Rather, the immediately adjacent fastening elements 76 assigned to different working shell segments 40 are clamped in relation to one another in their longitudinal regions protruding radially inward beyond the carrier shell 34 by a circumferential clamping element 116 in the circumferential direction towards one another. Since this occurs in all of the working jacket segments 40 that follow one another in the circumferential direction, a circular, closed structure is created, through which the working jacket segments 40 are prestressed in relation to one another in the circumferential direction on the one hand and are prestressed radially inward on the other hand and are thus pressed firmly against the carrier jacket 34.

Another modification for determining the working shell segments 40 on the roller body 22 is in the 18 and 19 shown. The end connection regions 66, 68 of the working jacket segments 40 are shaped in such a way that they have edge sections 118 which overlap the carrier jacket 40 radially inwards on its axial end faces and act as fastening elements. Bolts can be screwed through these edge sections 118 into internally threaded openings formed in the axial end faces of the carrier jacket 34 . The fixing in the central connection areas 70, 72 can again take place as previously described.

The 20 and 21 make it clear that there is a high degree of variability in a soil cultivation roller 20 constructed according to the invention with a roller body 22 that merely assumes a carrier function and a working casing 38 arranged on the outer circumference of the roller body 22 . While in the embodiment examples described above the working jacket 38 is provided with the exchangeable tools 52 designed as a chisel, FIG 20 the construction of a working shell 38 with a substantially unstructured, i.e. smooth working outer side 46 providing working shell segments 40. Since in the area of none of the fastening elements 76 used for fixing to the roller body 22 an opening is formed in the segment shells 42, the entire working Outside 46 unstructured and can be used, for example, to compact asphalt material and thereby create a smooth surface.

At the in 21 In the embodiment shown, roller tools 50 in the form of pad feet 120 are provided on the working jacket segments 40 . These can, for example, be fixed to the segment shells 42 by welding, but can alternatively also be used using the 2 recognizable interchangeable holder 50 are fixed to the segment shells 42 interchangeably.

The soil tillage roller constructed according to the invention and described above in various configuration variants is characterized in that it has a structure that is fundamentally divided into two system areas. A first of the system areas, namely the roller body, is rotatably supported on a machine frame of a soil tillage machine and forms a carrier for a second of the system areas, namely the working casing. When such a soil tillage roller is in operation, only the outer working surface of the working casing comes into contact with the subsoil to be worked. The roller body is always covered by the working shell, so that the roller body itself, with the essentially unstructured, smooth outside of its carrier shell, is not subject to wear and can be optimally designed for the connection of the working shell. In particular, the carrier jacket for this purpose in different length ranges and different circumferential areas have openings through which fastening elements for fixing the work jacket segments can be guided. Since all of these openings are covered by the working jacket during operation, there is no risk of contamination entering through these openings, nor is there a risk of these openings being reflected in the substrate to be processed.

Claims (19)

1. Soil working roller for a soil processing machine comprising a roller body (22), rotatable about a roller axis of rotation (W), with a support structure (28) for rotatable mounting of the roller body (22) and with a support sheath (34) supported radially outwardly on the support structure (28), further comprising a working sheath (38), which contacts a support sheath outer side (36) and provides a working exterior (46) of the soil working roller (20), with a plurality of working sheath segments (40), following one another in the circumferential direction, wherein each working sheath segment (40) has a segment shell (42), characterized in that on each segment shell (42) on a segment shell inner side (74) facing the support sheath outer side (36) of the support sheath (34) or/and supported at the support sheath outer side (36), a plurality of radially inwardly projecting fastening means (76) are fixedly arranged, and that a fastening means through opening (78) is provided in the support sheath (34) in association with each fastening means (76) fixedly arranged on one of the segment shells (42), and that each fastening means (76) engaging through a fastening means through opening (78) projects on a support sheath inner side (86) of the support sheath (34) for fixing to the roller body (22).
2. Soil working roller according to claim 1,
   characterized in that no openings penetrating the segment shells (40) are provided on the segment shells (40) in the area of the fastening means (76).
3. Soil working roller according to claim 1 or 2,

   characterized in that at least one fastening means (76) is fixedly arranged in each case on the segment shells (40) in at least three connecting regions (54, 56, 58, 60) located spaced apart from one another in the direction of the roller axis of rotation, preferably wherein at least two fastening means (76), arranged spaced circumferentially apart from one another, are fixedly arranged in end connecting regions (66, 68) located on axial end areas (62, 64) of a respective segment shell (42),

   further preferably wherein a circumferential spacing of the fastening means (76) to one another in the end connecting regions (66, 68) is greater than a circumferential spacing of a respective fastening means (76) to a segment shell longitudinal edge (44) directly adjacent to the same.
4. Soil working roller according to one of claims 3,
   characterized in that in at least one center connecting region (70, 72) located between the axial end areas (62, 64) of a respective segment shell (42), a fastening means (76) is fixedly arranged preferably in a circumferential center area of the segment shell (42).
5. Soil working roller according to one of the preceding claims, characterized in that a fastening area (80) is fixedly arranged on the support sheath inner side (86) of the support sheath (34) in association with at least one fastening means (76).
6. Soil working roller according to claim 5,

   characterized in that each fastening area (80) is fixedly arranged on the support sheath (34) axially following a fastening means through opening (78), or/and

   in that at least one fastening area (80), provided in association with a fastening means (76) arranged in a center connecting region (70, 72), is provided on the support structure (28), preferably wherein the support structure (28) comprises at least one support disk (24, 26) connected to the support sheath inner side (86) of the support sheath (34), and that at least one fastening area (80), provided in association with a fastening means (76) fixedly arranged in a center connecting region (70, 72), is provided in a radially outer area of a support disk (24, 26).
7. Soil working roller according to one of claim 5 or claim 6,

   characterized in that at least one fastening area (80) comprises a fastening projection (115) projecting radially inwardly on the support sheath inner side (86) of the support sheath (34),
   or/and

   in that a fastening means (76) is fastenable on at least one fastening area (80) by a screw connection.
8. Soil working roller according to one of the preceding claims,
   characterized in that at least one of the fastening means (76) is designed as plate-like and is arranged extending in the circumferential direction.
9. Soil working roller according to claim 4 and claim 8,

   characterized in that at least one substantially circumferentially-extending, plate-like fastening means (76) is arranged in at least one center connecting region (70, 72),
   or/and

   in that at least one substantially circumferentially-extending, plate-like fastening means (76) is arranged in at least one end connecting region (66, 68).
10. Soil working roller according to one of the preceding claims,
    characterized in that at least one of the fastening means (76) is designed as bolt-like and is arranged extending substantially in the radial direction, preferably wherein at least one substantially radially-extending, bolt-like fastening means (76) is designed with external threads.
11. Soil working roller according to claim 10,
    characterized in that at least one substantially radially-extending, bolt-like fastening means (76) has a bolt head (98) located at a distance from the segment shell (42) and interacts with a jaw assembly (100) for fastening the segment shell to the support sheath.
12. Soil working roller according to claim 11,

    characterized in that the jaw assembly (100) comprises two clamping jaws,(104, 106) fastened to one another, opposite one another, surrounding the bolt head (98) of at least one substantially radially-extending, bolt-like fastening means (76),

    preferably wherein the clamping jaws (104, 106) of a jaw assembly (100), surrounding at least one bolt head (98) of a substantially radially-extending, bolt-like fastening means (76), are supported on the support sheath inner side (86) of the support sheath (34) and generate a force effect acting radially inwardly on the at least one bolt head (98) surrounded by the same.
13. Soil working roller according to one of claims 12,
    characterized in that at least one jaw assembly (100) interacts with the bolt heads (98) of two substantially radially-extending, bolt-like fastening means (76), arranged on the segment shells (42) of working sheath segments (40) directly adjacent to one another in the circumferential direction.
14. Soil working roller according to claim 3 and one of claims 10-13,
    characterized in that at least one substantially radially-extending, bolt-like fastening means (76), is fixedly arranged in at least one end connecting region (66, 68).
15. Soil working roller according to one of the preceding claims,
    characterized in that at least one fastening means through opening (78) is slot-like or/and elongated substantially in the circumferential direction.
16. Soil working roller according to claim 15 and one of claims 10-14,
    characterized in that at least one fastening means through opening (78), engaged through by a substantially radially-extending, bolt-like fastening means (76), is expanded in a longitudinal area (96) transverse to its longitudinal extension to accommodate a bolt foot (94) of the substantially radially-extending, bolt-like fastening means (76) engaging through this fastening means through opening (78).
17. Soil working roller according to one of the preceding claims,
    characterized in that fastening means (76), engaging through a fastening means through opening (78), of at least two working sheath segments (40) which directly follow one another in the circumferential direction, are pretensioned to one another in the circumferential direction by a circumferential clamping means (116) arranged radially inside of the support sheath (34).
18. Soil working roller according to one of the preceding claims,
    characterized in that

    - the working sheath (38) comprises at least four, preferably at least six working sheath segments (40),
    or/and

    - the working sheath segments (40) provide a substantially closed, unstructured working exterior (46) of the working sheath (38) or that roller tools (48) projecting radially outwardly are arranged on the working sheath segments (40) to provide a structured working exterior (46) of the working sheath (38).
19. Soil processing machine comprising at least one soil working roller (20) according to one of the preceding claims.

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