Roller tool for ground processing roller

Abstract

A roller tool for a ground processing roller of a ground processing machine, comprising a tool carrier (16) fixed on the peripheral side of a carrier cover (26) with a mounting region and a changeable holder clamping region, the mounting region fixing the tool carrier (16) mounted to the peripheral surface of the carrier cover (26), a changeable tool (24; 24') with a changeable tool bar (58) extending in the direction of the longitudinal axis of the bar, a changeable holder (18) with a changeable holder opening (52) extending in the direction of the longitudinal axis of the opening and a changeable holder counter clamping region, the changeable holder opening accommodating the changeable tool bar of the changeable tool (24; 24') fixed detachably on the changeable holder (18), the changeable holder counter clamping region forming a mutual clamping action with the changeable holder clamping region for detachably fixing the changeable holder (18) on the tool carrier (16), a clamping mechanism (28) supported relative to the tool carrier (16) and the changeable holder (18) for generating the mutual clamping action.

Description

TECHNICAL FIELD

[0001] The invention relates to a roller tool for a ground processing roller of a ground processing machine. BACKGROUND

[0002] From EP 3 093 393 A1 a roller tool for a ground processing roller is known, which roller tool comprises a replaceable holder which is fixed by means of its mounting region by welding on the outer peripheral surface of a roller housing of a ground processing roller. In the replaceable holder a replaceable holder opening is configured, into which a replaceable tool rod of a replaceable tool, for example configured as a chisel, is inserted by movement in the direction of the opening longitudinal axis of the replaceable holder opening and is locked therein by means of a snap lock. The replaceable tool can be pressed out of the replaceable holder opening by means of a tool which needs to be introduced through a lateral opening in the replaceable holder part and which needs to engage the replaceable tool rod from behind.

[0003] From DE 10 2013 217 042 A1 a roller tool for a ground processing machine is known, which roller tool comprises a replaceable holder which is fixed by means of its mounting region by welding on the outer peripheral surface of a roller housing of a ground processing roller. In the replaceable holder a replaceable holder opening is configured, into which a replaceable tool rod of a replaceable tool, for example configured as a chisel, is inserted by movement in the direction of the opening longitudinal axis of the replaceable holder opening. In order to lock the replaceable tool on the replaceable holder, a closure element is inserted from both sides into a lateral opening provided on the replaceable holder, which closure element on the one hand closes the lateral opening provided in the replaceable holder against the ingress of contaminants and on the other hand engages with the replaceable tool rod and thereby locks the replaceable tool on the replaceable holder. SUMMARY

[0004] It is an object of the invention to provide a roller tool for a ground processing roller of a ground processing machine, in which the replaceable tool can be reliably fixed on the replaceable holder and can also be easily detached from the replaceable holder after a longer operating duration.

[0005] According to the invention, this object is achieved by a roller tool for a ground processing roller of a ground processing machine, which roller tool comprises:

[0006] a tool carrier which needs to be fixed on the outer peripheral side of the carrier housing, which tool carrier has a mounting region for fixedly mounting the tool carrier on the outer peripheral surface of the carrier housing and a replaceable holder clamping region,

[0007] a replaceable tool which has a replaceable tool rod which extends longitudinally in the direction of the rod longitudinal axis,

[0008] - a change holder having a change holder opening which extends in the direction of the longitudinal axis of the opening and a change holder counter clamping region (Wechselhalter-Gegenklemmbereich), wherein the change holder opening serves to accommodate a change tool rod of a change tool which is to be detachably secured to the change holder, wherein the change holder counter clamping region forms a mutual clamping action with the change holder clamping region for detachable securing of the change holder to the tool carrier,

[0009] - a clamping mechanism which is to be supported relative to the tool carrier and the change holder for producing the mutual clamping action.

[0010] By means of the clamping mechanism the respective change holder can be brought into mutual clamping action with the tool carrier secured on the carrier housing, and by means of the use of the clamping mechanism the process for detachable securing of the change holder to the tool carrier and the process for removing the change holder from the tool carrier can be carried out in a simple manner, wherein only the clamping mechanism is positioned in the clamped state for producing the mutual clamping action or is removed from this state.

[0011] For producing the mutual clamping action, the change holder clamping region can comprise on the tool carrier a tool carrier clamping recess, wherein the tool carrier clamping recess is defined by a first clamping face and a second clamping face which is opposite the first clamping face, and the change holder counter clamping region can comprise on the change holder a change holder clamping projection which is to be positioned into engagement in the tool carrier clamping recess, wherein on the change holder clamping projection there is provided a first counter clamping face which is to be brought by means of the clamping mechanism into abutment against the first clamping face for producing the mutual clamping action, and wherein on the clamping mechanism there is provided a second counter clamping face which is to be brought into abutment against the second clamping face for producing the mutual clamping action.

[0012] In order to be able to provide a reliable mutual clamping action, in particular also in a direction radially outward relative to the rotational axis of the roller, it is proposed that the first clamping face and the second clamping face are inclined toward one another in a direction away from the mounting region, or / and the first clamping face and the second clamping face are inclined toward one another in a direction orthogonal to the direction away from the mounting region, or / and the first clamping face, the second clamping face, the first counter clamping face and the second counter clamping face are substantially free of curvature.

[0013] In a particularly advantageous design variant, a third clamping face can be provided on the change tool rod, and a third counter clamping face which is to be brought into abutment against the third clamping face for producing the mutual clamping action can be provided on the clamping mechanism. In this way the change tool is also brought into mutual clamping action, so that by means of the sole clamping mechanism not only the change holder can be detachably secured to the tool carrier by means of the production of the mutual clamping action, but also the change tool brought into mutual clamping action can be detachably secured to the change holder and thus also to the tool carrier.

[0014] To this end, for example, a replaceable tool holder can be provided with a replaceable tool clamping recess which opens substantially transversely to the longitudinal axis of the holder and which provides a third clamping face.

[0015] The third clamping face may, for example, be concavely curved, and the third counter- clamping face may be complementarily convexly curved.

[0016] To enable the clamping mechanism, on the one hand, to form a mutual clamping action with different system regions which are to be clamped, and, on the other hand, to enable it to be positioned stably on the replaceable holder, it is proposed that the clamping mechanism has a clamping mechanism shaft which extends longitudinally in the direction of the longitudinal axis of the clamping mechanism and, for example, a clamping mechanism head, and that the clamping mechanism shaft is at least locally configured tapering in the direction of the longitudinal axis of the clamping mechanism, for example away from the clamping mechanism head.

[0017] In the case of a convexly curved third counter-clamping face being provided in particular on the clamping mechanism shaft, the convexly curved third counter- clamping face may, for example, have the shape of a substantially truncated cone peripheral section to provide the tapering configuration of the clamping mechanism shaft in the direction of the longitudinal axis of the shaft.

[0018] To mount and secure the clamping mechanism on the replaceable holder, a clamping mechanism through-opening and a fastening mechanism through-opening which is opposite the clamping mechanism through-opening can be provided in the replaceable holder, wherein, to produce the mutual clamping action, the clamping mechanism can be positioned in such a way that it passes through the clamping mechanism through-opening, and the fastening mechanism which holds the clamping mechanism in the clamping mechanism through-opening can be positioned in such a way that it passes through the fastening mechanism through-opening.

[0019] Here, to be able to provide a stable mutual fastening action between the clamping mechanism and the fastening mechanism, a fastening thread region is provided on the clamping mechanism, and a counter-fastening thread region which is required for the fastening thread region to be threadedly engaged in order to hold the clamping mechanism in the clamping mechanism through-opening is provided on the fastening mechanism.

[0020] To this end, the fastening thread region may, for example, comprise an internal thread which is configured in an opening of the clamping mechanism, and the counter- fastening thread region may comprise an external thread which is configured on a fastening mechanism shaft of the fastening mechanism.

[0021] To protect the tool carrier which is required to be secured on the carrier cover from external influences, it is proposed that the replaceable holder comprises a replaceable holder body which has a tool carrier accommodation recess which substantially completely accommodates the tool carrier.

[0022] In this design, the replaceable holder clamping projection can be configured to extend from the replaceable holder body into the tool carrier accommodation recess.

[0023] The application further relates to a floor processing roller comprising a plurality of roller tools according to the application, wherein the tool carriers of the roller tools are fixedly mounted to the carrier cover by screwing or welding, preferably by a weld which substantially without interruption surrounds the mounting area of the respective tool carrier.

[0024] The carrier cover can be a roller cover of the floor processing roller or can be an enveloping cover arranged around the roller cover of the floor processing roller.

[0025] The application further relates to a floor processing machine comprising at least one floor processing roller according to the application. BRIEF DESCRIPTION OF DRAWINGS

[0026] The application is described in detail below with reference to the drawings. The drawings show:

[0027] Figure 1 a perspective view of a floor processing roller with a plurality of first tool carriers for exchangeable supports supported on the outer circumference of a roller cover is shown;

[0028] Figure 2 a floor processing roller with an exchangeable tool mounted on an exchangeable support configured as a chisel is shown; Figure 1

[0029] Figure 3 a floor processing roller with an exchangeable tool mounted on an exchangeable support configured as a steel plate for tamping is shown; Figure 1

[0030] Figure 4 an exploded view of a roller tool is shown;

[0031] Figure 5 a perspective view of a tool carrier of a roller tool is shown; Figure 4

[0032] a side view of a tool carrier is shown; Figure 6 Figure 5 a perspective view of an exchangeable support of a roller tool is shown;

[0033] Figure 7 Figure 4 a side view of an exchangeable support is shown;

[0034] Figure 8 a perspective view of an exchangeable support is shown; Figure 7

[0035] a perspective bottom view of an exchangeable support is shown; Figure 9 Figure 7

[0036] Figure 10 a perspective view of a floor processing roller with a plurality of first tool carriers for exchangeable supports supported on the outer circumference of a roller cover is shown; Figure 4 ​​​​​​perspective view of the clamping mechanism of the roller tool of

[0037] Figure 11 is shown in Figure 10 Figure 10 the clamping mechanism of the roller tool of

[0038] Figure 12 is shown in Figure 4 side view of the roller tool of

[0039] Figure 13 is shown in Figure 4 side view of the roller tool of

[0040] Figure 14 is shown in

[0041] Figure 15 is shown in Figure 14 Figure 14 sectional view of the roller tool of

[0042] Figure 16 is shown in Figure 14 Figure 15 sectional view of the roller tool of

[0043] Figure 17 is shown in Figure 15

[0044] is shown in Figure 18 sectional view of the assembled roller tool of Figure 17

[0045] is shown in Figure 19 Figure 17 sectional view of the assembled roller tool of Figure 18 DETAILED DESCRIPTION

[0046] in Figure 1 ​​​​​In the middle, the ground processing roller of a ground processing machine is shown overall with 10, which is configured for example in the manner of a ground compactor. The ground processing roller 10 comprises a roller housing 12 about a roller rotation axis A, which has an outer peripheral surface 14. On the outer peripheral surface 14 of the roller housing 12, a plurality of tool carriers 16 of a roller tool, which is designated overall with 20, of exchangeable holders, which is designated overall with 18, are fixed by screwing or welding. The tool carriers 16 are arranged in succession in a circumferential direction in a plurality of rings which are arranged in succession in the direction of the roller rotation axis A, wherein the tool carriers 16 arranged in succession in the axial direction in immediately adjacent rings are arranged offset to one another in the circumferential direction, for example.

[0047] Figure 2 A ground processing machine is shown Figure 1 with all roller tools 20. In addition to the tool carriers 16 which are fixed by welding on the roller housing 12, the roller tool also comprises exchangeable tools 24 in the form of chisels which are held on the exchangeable holders 18.

[0048] In the ground processing roller 10 shown in Figure 3 , the roller tool 20 comprises roller tools 24' in the form of tamping steel plates which are carried on the exchangeable holders 18.

[0049] Before the configuration of the roller tool 20, i.e. of the exchangeable holders 18 and of the exchangeable tools 24 or 24', is described in detail below, it is necessary to point out that, in the ground processing roller 10 shown in Figures 1 to 3 , the exchangeable holders 18 of the roller tool 20 are fixed directly on the roller housing 12 which provides the carrier housing 26. In an alternative design, it is possible to use as the carrier housing 26, for example, an enveloping housing which is configured with a plurality of shell segments, which can be arranged, if necessary, around the roller housing 12 of such a ground processing roller 10.

[0050] Figure 4 An exploded view of the roller tool 20 with two different types of exchangeable tools 24, 24' is shown in Figure 2 and Figure 3 , when mounted on the ground processing roller 10. In addition to the exchangeable tools 24, 24', other important system areas, the tool carriers 16, the exchangeable holders 18 and the clamping mechanism 28 and the fastening mechanism 30 assigned thereto, which are described in more detail below, are also visible.

[0051] The tool carriers 16 which need to be fixed by a material connection, in particular welding, on the outer peripheral surface 14 of the carrier housing 26, for example the roller housing 12, are shown in Figure 5 and Figure 6The tool carrier 16 comprises a mounting region 32 which is configured substantially in the shape of a plate, which mounting region 32 is configured to be curved in conformity with the circularly curved peripheral contour of the carrier cover 26 and is surrounded by a chamfer 34. A weld can be produced in such a way that it substantially completely surrounds the mounting region 32, in engagement into the chamfer 34, and thus achieves a secure holding of the tool carrier 16, wherein the weld materially connects the mounting region 32 to the peripheral surface 14.

[0052] A tool carrier clamping recess 36 is configured on the tool carrier 16, such that the tool carrier clamping recess opens in a direction R1 away from the mounting region 32 and in a direction R2 which is substantially orthogonal to the direction R1 and is oriented substantially parallel to the roller rotation axis A, wherein the direction R1 substantially corresponds to a radial direction of the roller rotation axis A. The tool carrier clamping recess is defined by a first clamping face 38 and a second clamping face 40 which is opposite the first clamping face 38. The clamping faces 38, 40 which are opposite one another are clearly shown as being inclined relative to one another, such that the relative spacing of the clamping faces which are opposite one another in the direction R1 away from the mounting region 32, i.e. the circumferential spacing with respect to the roller rotation axis A when mounted on the floor processing roller 10, is substantially reduced. Figure 6

[0053] The two clamping faces 38, 40 are preferably also positioned relative to one another such that their spacing relative to one another is not constant in the direction R2, but is also reduced in the direction R2. In particular, it can be designed such that the spacing of the two clamping faces 38, 40 relative to one another in the direction R2 is reduced in the direction R2 from the front right to the back left in the schematic view. Figure 5 The two clamping faces 38, 40 are preferably also configured as flat, substantially uncurved faces.

[0054] In the mounted state of the exchangeable holder 18 on the tool carrier 16, the exchangeable holder body 42 covers the tool carrier 16 and also completely covers the weld which is connected on the carrier cover 26, thereby protecting the tool carrier 16 from external influences. Figures 7 to 9 The exchangeable holder 18 which is shown in more detail in Figure 15 and 17 In the mounted state of the exchangeable holder 18 on the tool carrier 16, the exchangeable holder body 42 covers the tool carrier 16 and also completely covers the weld which is connected on the carrier cover 26, thereby protecting the tool carrier 16 from external influences.

[0055] On the two end faces 44, 46 of the exchangeable holder body 42 which are oriented in the circumferential direction relative to the roller rotation axis A, inclined outwardly protruding breaking projections 48, 50 are provided when mounted on the floor processing roller 10, which breaking projections 48, 50 in particular assist the working process carried out by the exchangeable tool 24 which is configured as a chisel.

[0056] ​A changeable holder opening 52 is configured in the changeable holder 18 or in the changeable holder body 42. The changeable holder opening 52 extends longitudinally in the direction of an opening longitudinal axis L which is oriented substantially orthogonally to the roller rotation axis A and thus extends radially with respect to the roller rotation axis A and is surrounded by an annular support face 54. A changeable tool head 56 of the changeable tool 24 or 24' can be supported on the support face 54 with a counter support face 60 which annularly surrounds a changeable tool shaft 58 thereof.

[0057] In Figure 9 A changeable holder clamping projection 62, which is visible in

[0058] A first counter clamping face 66, which is visible in Figure 15 and Figure 17 is configured on the changeable holder clamping projection 62 in correspondence with the first clamping face 38 of the tool carrier 16 and is of a substantially uncurved configuration and is angled with respect to the opening longitudinal axis L in such a way that the spacing of the first counter clamping face 66 increases in the direction of the opening longitudinal axis L away from the support face 54. The first clamping face 38 and the first counter clamping face 66 abut against each other in face contact when a mutual clamping action is established between the tool carrier 16 and the changeable holder 18 in such a way that the first clamping face 38 and the first counter clamping face 66 abut against each other in face contact.

[0059] In the configuration of the roller tool 20 according to the application, the tool carrier clamping recess 36 and the two clamping faces 38, 40 which define the tool carrier clamping recess 36 mainly provide a changeable holder clamping region 41 of the tool carrier 16, while the changeable holder clamping projection 62 mainly provides a changeable holder counter clamping region 43 of the changeable holder 18 with its first counter clamping face 66.

[0060] In Figure 10 and Figure 11 The clamping mechanism 28, which is shown in Figure 18 The clamping mechanism head 70 can be substantially completely accommodated in the clamping mechanism through opening 72 and can be supported with respect to the changeable holder body 42, as is visible in

[0061] In the exchangeable holder body 42, opposite the clamping mechanism through-opening 72, a fastening mechanism through-opening 76 is configured, through which the fastening mechanism 30 can be inserted with a fastening mechanism shaft 78 to interact with the clamping mechanism 28. In order to accommodate a fastening mechanism head 80, the fastening mechanism through-opening 76 has a widened fastening mechanism head accommodation region 82.

[0062] The clamping mechanism 28 has a second counter clamping face 84 on its clamping mechanism shaft 68, which corresponds to the second clamping face 40 of the tool carrier 16. The second counter clamping face 84 is, like the second clamping face 40, essentially flat, i.e. not curved, so that in the assembled state shown in Figure 17 the clamping mechanism 28 lies flat against the second clamping face 40 with its second counter clamping face 84. In order to assist in the defined positioning of the clamping mechanism 28, the clamping mechanism 28 can have, for example, a holding face 86 orthogonal to the second counter clamping face 84, which can be supported in a counter holding face 89 essentially in a radially inward direction, which is formed on the tool carrier 16 and arranged essentially orthogonal to the second clamping face 40.

[0063] In a circumferential region of the clamping mechanism shaft 68, opposite the clamping mechanism longitudinal axis K with respect to the second counter clamping face 84, a third counter clamping face 88 is configured. The third counter clamping face 88 has a convexly curved profile about the clamping mechanism longitudinal axis K.

[0064] The clamping mechanism 28 is configured, in particular in the region of its clamping mechanism shaft 68, with a wedge-shaped structure overall, so that the clamping mechanism shaft 68 has a tapering profile in the direction of the clamping mechanism longitudinal axis K away from the clamping mechanism head 70. This means that the second counter clamping face 84 has a decreasing spacing in the direction away from the clamping mechanism head 70 with respect to the clamping mechanism longitudinal axis K. This also applies accordingly to the third counter clamping face 88. Due to the convex structure of the third counter clamping face 88, the third counter clamping face 88 is configured, for example, with the profile of a circumferential section of a truncated cone, so that the radius of curvature of the third counter clamping face 88 with respect to the clamping mechanism longitudinal axis K decreases in the direction away from the fastening mechanism head 70 when, for example, essentially circularly curved.

[0065] Figure 10 and Figure 11 It is also shown that an opening 90 is configured in the clamping mechanism shaft 68, which opens in the direction of the clamping mechanism longitudinal axis K in the direction away from the clamping mechanism head 70. In the opening 90, an internal thread is configured, which provides a fastening thread region 92. An external thread is provided on the fastening mechanism shaft 78 of the fastening mechanism 30, which provides a counter fastening thread region, so that, in order to secure the clamping mechanism 28, the fastening mechanism 30 can be inserted with its fastening mechanism shaft 78 or the external thread provided thereon through the opening 90 in the clamping mechanism shaft 68 and screwed into the fastening thread region 92. Figure 18in the inner thread of the opening 90 of the clamping mechanism rod 68 in a manner visible in the side view.

[0066] In Figure 12 and Figure 13 In the alternative tool 24 or 24' a third counter clamping face 88 is configured on the alternative tool rod 58, which is visible in the side view, which opens substantially transversely to the rod longitudinal axis S. The third counter clamping face 88 is configured complementary to the third clamping face 96 as concave and provides a correspondingly curved third clamping face 96. Correspondingly to the conical or tapering profile of the third counter clamping face 88, the third clamping face 96 can also be configured conically tapering in a direction substantially orthogonal or oblique to the rod longitudinal axis S, so that a planar abutting contact between the third counter clamping face 88 and the third clamping face 96 is achieved in the assembled state.

[0067] For the assembly of the roller tool 20 described previously with regard to its different components can be carried out as follows: First the alternative holder 18, which covers the corresponding tool carrier 16 from the radially outer side, is moved onto the carrier cover 26. Here the alternative holder clamping protrusion 62 enters into the tool carrier clamping recess 36. The alternative holder 18 can be positioned here, for example, such that the alternative holder 18 with its first counter clamping face 66 is already abutting on the first clamping face 38 or is opposite thereto with a small spacing. In this state the alternative holder 18 can also be abutted on the mounting region 32 of the tool carrier 16 with the end face 98 configured on the alternative holder clamping protrusion 62, which is oriented substantially orthogonal to the opening longitudinal axis L.

[0068] Before or after the positioning of the alternative holder 18 relative to the tool carrier 16 as described previously, the alternative tool 24 can already be inserted in the alternative holder opening 52, so that its alternative tool rod 58 is positioned in an engaging manner into the alternative holder opening 52. The alternative tool 24 or 24' is positioned here in the circumferential direction with regard to the opening longitudinal axis L, so that the alternative tool clamping recess 94 is oriented away from the first counter clamping face 66 provided on the alternative holder clamping protrusion 62. The above orientation of the alternative tool clamping recess 94 can also alternatively be provided by turning the alternative tool 24 or 24' when the alternative holder 18 has already been positioned on the tool carrier 16.

[0069] Subsequently the clamping mechanism 28 is passed with its clamping mechanism rod 68 through the clamping mechanism through opening 72 in the alternative holder body 42 in an orientation such that the second counter clamping face 84 is opposite the second clamping face 40 and the holding face 86 is opposite or respectively abuts on the counter holding face 89. Thereby the clamping mechanism 28 is automatically oriented such that the third counter clamping face 88 configured thereon is opposite the third clamping face 96 on the alternative tool rod 58.

[0070] During the movement of the clamping mechanism 28 in the direction of the clamping mechanism longitudinal axis K through the clamping mechanism through-opening 72, an increasing abutment force is generated between the second clamping face 40 and the second counter clamping face 84 on the one hand and between the third clamping face 96 and the third counter clamping face 88 on the other hand. Thereby a force is exerted on the exchangeable tool rod 58 which loads substantially orthogonally to the rod longitudinal axis S and which presses a circumferential face region 100 of the exchangeable tool clamping recess 94 which is opposite the exchangeable tool clamping recess 94 in the circumferential direction about the rod longitudinal axis S onto a circumferential face region 102 of the exchangeable holder 18 which is opposite thereto and surrounds the exchangeable holder opening 52. The exchangeable tool rod 58 thereby presses the exchangeable holder clamping projection 62 with its first counter clamping face 66 onto the first clamping face 38 on the tool carrier 16.

[0071] Thus, a clamping interaction is generated by the clamping mechanism 28 which is supported directly with respect to the tool carrier 16 and indirectly with respect to the exchangeable holder 18 via the exchangeable tool 24, 24' or the exchangeable tool rod 58, which clamping interaction causes the exchangeable holder 18 to be held firmly on the tool carrier 16 and the exchangeable tool 24, 24' to be held firmly on the exchangeable holder 18. Since the clamping faces 38, 40 which are arranged on the tool carrier 16 are inclined in a radially outward direction towards one another, a force effect is also generated which loads the exchangeable holder 18 radially inward with respect to the tool carrier 16, so that the exchangeable holder 18 is supported radially inward in the region of its end face 98 on the tool carrier 16 or its mounting region 32, but without the exchangeable holder body 42 which surrounds or covers the tool carrier 16 touching the outer circumferential face 14 of the carrier cover 26, i.e. forms a clearance-like gap 104 with respect thereto.

[0072] By adjusting the second clamping face 40 and the second counter clamping face 84 which is formed therewith with respect to the opening longitudinal axis L or the rod longitudinal axis S, the clamping mechanism 28 not only presses the exchangeable tool rod 58 substantially orthogonally to its rod longitudinal axis S onto the exchangeable holder 18, but also generates a force component which directs the exchangeable tool rod 58 in the direction of the rod longitudinal axis S towards the mounting region 32 of the tool carrier 16, and this in turn causes the exchangeable tool 24 or 24' to be pressed with the counter support face 60 which is constructed on the exchangeable tool head 56 onto the support face 54 which is formed on the exchangeable holder 18. In order to achieve this, a recess or opening 106 can be constructed in the mounting region 32 of the tool carrier 16 which accommodates the axial end region of the exchangeable tool rod 58.

[0073] The tensioning of the different system regions of the roller tool 20 relative to one another, which is caused by the wedge action of the clamping mechanism 28, can be produced in a particularly simple manner in that, after the clamping mechanism 28 has been introduced into the exchangeable carrier 18 in the manner described above, the fastening mechanism 30 is screwed with its outer thread into the inner thread of the clamping mechanism 28 and thus increasingly loads the clamping mechanism 28 in the direction of the clamping mechanism longitudinal axis K until the maximum clamping action is achieved. In this state, the clamping mechanism head 70 can be supported on the exchangeable carrier 18, for example, in the direction of the clamping mechanism longitudinal axis K or can have a slight spacing relative thereto. Here, the fastening mechanism head 80 is supported on the exchangeable carrier 18 in the fastening mechanism head accommodation region 82.

[0074] By the defined mutual abutment between the first clamping face 38 and the first counter clamping face 66, the positioning of the exchangeable carrier 18 relative to the tool carrier 16 in the circumferential direction about the roller rotation axis A is fixedly predefined. Before the mutual clamping action of the exchangeable carrier 18 relative to the tool carrier 16 is produced, a slight movement in the direction of the roller rotation axis A is possible, since the exchangeable carrier counter clamping region 43 or the exchangeable carrier clamping projection 62 has a slightly greater extent in the direction of the roller axis A than the tool carrier 16 in the region of its exchangeable carrier clamping region 41 or its two clamping faces 38, 40, or vice versa. A fine adjustment of the exchangeable carrier 18 in the direction of the roller rotation axis A is thus possible.

[0075] The mounting or dismounting of the exchangeable carrier on or from the corresponding tool carrier is achieved in a roller tool constructed according to the application in a simple manner. In particular, the exchangeable carrier and the tool carrier can be constructed as forged components, wherein the surfaces that need to abut one another can be provided with high accuracy, for example, by means of chip removal machining. The exchangeable carrier can be constructed with a substantially constant wall thickness in the region of its exchangeable carrier body and thus provides reliable protection for the corresponding tool carrier that needs to be mounted on the carrier housing in a materially bonded manner.

Claims

1. A roller tool for a ground processing roller of a ground processing machine, the roller tool comprising: - a tool carrier (16) fixed on an outer peripheral side of a carrier cover (26), the tool carrier (16) having a mounting region (32) for fixedly mounting the tool carrier (16) to an outer peripheral face (14) of the carrier cover (26) and a replaceable holder clamping region (41), - a replaceable tool (24; 24') having a replaceable tool rod (58) extending longitudinally in the direction of a rod longitudinal axis (S), - a replaceable holder (18) having a replaceable holder body (42), wherein a replaceable holder opening (52) extending longitudinally in the direction of an opening longitudinal axis (L) is provided in the replaceable holder body (42), the replaceable holder opening (52) for accommodating the replaceable tool rod (58) of the replaceable tool (24; 24') detachably fixed on the replaceable holder (18), wherein a replaceable holder counter clamping region (43) is provided on the replaceable holder body (42), wherein the replaceable holder counter clamping region (43) and the replaceable holder clamping region (41) form a mutual clamping action for detachably fixing the replaceable holder (18) on the tool carrier (16), - a clamping mechanism (28) supported relative to the tool carrier (16) and the replaceable holder (18) for generating a mutual clamping action, characterized in that the replaceable holder body (42) has a tool carrier accommodation recess (64) which fully accommodates the tool carrier (16).

2. The roller tool of claim 1, wherein, The replaceable holder clamping region (41) comprises a tool carrier clamping recess (36) on the tool carrier (16), wherein the tool carrier clamping recess (36) is defined by a first clamping face (38) and a second clamping face (40) opposite the first clamping face (38), and the replaceable holder counter clamping region (43) comprises a replaceable holder clamping protrusion (62) on the replaceable holder (18) which is positioned in an engaging manner into the tool carrier clamping recess (36), wherein a first counter clamping face (66) is provided on the replaceable holder clamping protrusion (62) which, by means of the clamping mechanism (28), bears against the first clamping face (38) for generating a mutual clamping action, and wherein a second counter clamping face (84) is provided on the clamping mechanism (28) which bears against the second clamping face (40) for generating a mutual clamping action.

3. The roller tool of claim 2, wherein, The first clamping face (38) and the second clamping face (40) are inclined towards each other in a direction (R1) away from the mounting region (32); or / and the first clamping face (38) and the second clamping face (40) are inclined towards each other in a direction (R2) orthogonal to the direction (R1) away from the mounting region (32); or / and the first clamping face (38), the second clamping face (40), the first counter clamping face (66) and the second counter clamping face (84) are not curved.

4. A roller tool according to claim 2 or 3, characterised in that, A third clamping surface (96) is provided on the exchangeable tool bar (58), and a third counter clamping surface (88) is provided on the clamping mechanism (28) which rests on the third clamping surface (96) to produce a mutual clamping action.

5. The roller tool of claim 4, wherein, An exchangeable tool clamping recess (94) which opens transversely to the bar longitudinal axis (S) and which provides the third clamping surface (96) is provided on the exchangeable tool bar (58).

6. The roller tool of claim 4, wherein, The third clamping surface (96) is concavely curved, and the third counter clamping surface (88) is complementarily convexly curved.

7. The roller tool of claim 1 or 2, wherein, The clamping mechanism (28) has a clamping mechanism bar (68) which extends longitudinally in the direction of a clamping mechanism longitudinal axis (K), and the clamping mechanism bar (68) is configured at least locally to taper in the direction of the clamping mechanism longitudinal axis (K).

8. The roller tool of claim 6, wherein, The clamping mechanism (28) has a clamping mechanism bar (68) which extends longitudinally in the direction of a clamping mechanism longitudinal axis (K), and the clamping mechanism bar (68) is configured at least locally to taper in the direction of the clamping mechanism longitudinal axis (K), and the third counter clamping surface (88) has the shape of a circumferential section of a truncated cone.

9. The roller tool of claim 1 or 2, wherein, A clamping mechanism through opening (72) and a fastening mechanism through opening (76) which is opposite the clamping mechanism through opening (72) are provided in the exchangeable holder (18), wherein, in order to produce a mutual clamping action, the clamping mechanism (28) is positioned in such a way that it passes through the clamping mechanism through opening (72), and a fastening mechanism (30) which holds the clamping mechanism (28) in the clamping mechanism through opening (72) is positioned in such a way that it passes through the fastening mechanism through opening (76).

10. The roller tool of claim 9, wherein, A fastening thread region (92) is provided on the clamping mechanism (28), and a counter fastening thread region which engages with the fastening thread region (92) is provided on the fastening mechanism (30) in order to hold the clamping mechanism (28) in the clamping mechanism through opening (72).

11. The roller tool of claim 10, wherein, The fastening thread region (92) comprises an internal thread which is configured in an opening (90) of the clamping mechanism (28), and the counter fastening thread region comprises an external thread which is configured on a fastening mechanism bar (78) of the fastening mechanism (30).

12. The roller tool of claim 2, wherein, The exchangeable holder clamping protrusion (62) is configured to extend from the exchangeable holder body (42) into the tool carrier accommodation recess (64).

13. A ground processing roller comprising a plurality of roller tools (20) according to any one of claims 1 to 12, wherein, The tool carriers (16) of the roller tools (20) are fixedly mounted on the carrier cover (26) by means of a screw connection or welding.

14. The floor finishing roller of claim 13, wherein, The tool carriers (16) of the roller tools (20) are fixedly mounted on the carrier cover (26) by means of a welded joint which surrounds the respective tool carrier (16) without a gap.

15. The floor finishing roller of claim 13, wherein, The carrier cover (26) is a roller cover (12) of the ground processing roller (10), or the carrier cover (26) is an enveloping cover which is arranged around the roller cover (12) of the ground processing roller (10).

16. A ground processing machine comprising at least one ground processing roller (10) according to claim 13, 14 or 15.

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