Roller tools for floor finishing rollers

Abstract

A roller tool for a floor finishing roller of a floor finishing machine, the roller tool comprising: a tool carrier (46) to be fixed on the outer peripheral side of a carrier shell (26) of a floor finishing roller (20); a replaceable bracket (34) which can be releasably fixed on the tool carrier (46); and a replaceable tool (70) which can be releasably fixed on the replaceable bracket (34).

Description

Technical Field

[0001] The invention relates to a roller tool for a floor finishing roller of a floor finishing machine, and to a floor finishing roller and a housing for the floor finishing roller having a plurality of such roller tools. Background Art

[0002] WO 2013 / 107545 A2 discloses an interchangeable holder, which is to be fixed by welding to the outer circumference of the roller casing of a rolling roller, for interchangeable tools, for example, in the form of chisels or tamping sheets. The interchangeable holder has a trapezoidal profile in side view and provides a receiving opening for the interchangeable tool in the central region, into which the tool shaft of the interchangeable tool to be fixed to the interchangeable holder can be positioned in an engaging manner. Summary of the Invention

[0003] The object of the present invention is to provide a roller tool for a floor finishing roller of a floor finishing machine which, while being of simple construction, allows for easy replacement of the replaceable tool regardless of the wear state.

[0004] According to the invention, this object is achieved by a roller tool for a floor finishing roller of a floor finishing machine, which roller tool comprises: a tool carrier, which is fixed to the outer circumference of a carrier shell of the floor finishing roller; a replaceable holder, which is releasably fixed to the tool carrier; and a replaceable tool, which is releasably fixed to the replaceable holder.

[0005] In the design of the roller tool according to the present invention, not only is the replaceable tool, which needs to be replaced due to wear or for other floor-refining work, releasably coupled to the floor-refining roller, but the replaceable holder for accommodating the replaceable tool is also releasably coupled to the floor-refining roller. Furthermore, such replaceable holders are subject to considerable wear during floor-refining work. On the one hand, it is desirable to facilitate the replacement of such worn replaceable holders, and on the other hand, to facilitate the replacement of the replaceable tool by making the replaceable holder itself releasable from the carrier housing and thus enabling easy replacement of the replaceable tool regardless of its condition. For example, this can be achieved by welding only the tool carrier—which is protected from external influences by the replaceable holder and is therefore essentially invulnerable to wear itself—to the carrier housing. This also allows such a tool carrier to be constructed of a material that is particularly suitable for attachment to the carrier housing, but which may be less wear-resistant than the material required for the replaceable holder or the replaceable tool.

[0006] It should be noted that, in the context of the present invention, the tool carrier is non-releasably connected to the carrier housing, meaning that, in principle, the tool carrier and the carrier housing cannot be detached to replace the replaceable tool and / or the replaceable holder. A non-releasable connection can be achieved, for example, by a material connection (e.g., welding), whereby the connection resulting from this material connection must be broken in order to allow the tool carrier to be detached from the carrier housing. However, in principle, a non-releasable connection can also be achieved by a screw connection, wherein, when the replaceable tool or the replaceable holder needs to be detached from the carrier housing and replaced, the screw connection does not need to be released, i.e., the tool carrier remains attached to the carrier housing.

[0007] In order to be able to couple the interchangeable holder to the tool carrier in an easily detachable manner on the one hand, but at the same time to be able to integrate the interchangeable tool into the interchangeable holder on the other hand, it is proposed that the interchangeable holder comprises two interchangeable holder main parts (Wechselhalter- ), wherein, when the interchangeable holder is fixed to the tool carrier, the two interchangeable holder main parts form a tool carrier receiving space for accommodating the tool carrier and are fixed to the tool carrier via a fixing mechanism. The tool carrier accommodated in the tool carrier receiving space and thus surrounded by the interchangeable holder is shielded from external influences.

[0008] In order to achieve a stable construction in operation simply and with as few different components as possible, it is proposed that the two interchangeable holder main parts are constructed essentially identically to one another, or / and that each interchangeable holder main part has a tool carrier receiving recess ( - Aufnahmeaussparung), or / and, each replaceable holder body part has a carrier cover contact surface to be positioned toward the outer circumference of the carrier cover and matching the outer circumference contour of the carrier cover .

[0009] External effects on the fixing means for fixing the interchangeable holder body part to the tool carrier can be largely avoided in that each interchangeable holder body part can be fixed to the tool carrier by at least one fixing means, preferably two fixing means, wherein each interchangeable holder body part has, corresponding to each fixing means for fixing it to the tool carrier, a fixing means through-hole (Befestigungsorgankopf-Aufnahmebereich) with an enlarged fixing means head receiving area (Befestigungsorgankopf-Aufnahmebereich). ).

[0010] In a particularly advantageous embodiment for stably connecting the interchangeable holder to the carrier housing, the tool carrier can have a corresponding body part contact surface for each interchangeable holder main part, and each interchangeable holder main part can have a tool carrier contact surface for contacting the corresponding body part contact surface of the tool carrier. The body part contact surfaces are arranged on mutually facing sides of the tool carrier, such that the relative spacing of the body part contact surfaces of the tool carrier increases from the carrier housing contact side of the tool carrier. The body part contact surfaces can be arranged essentially symmetrically with respect to a tool carrier center plane of the tool carrier. Thus, when the corresponding interchangeable holder main part is secured to the tool carrier via one or more securing mechanisms, the embodiment of the tool carrier results in a wedging effect that acts on the corresponding interchangeable holder main part in the direction of the carrier housing and prestresses it against the latter.

[0011] This effect can also be enhanced in the following way, that is, the tool carrier contact surfaces of the two replaceable bracket main body parts are arranged complementary to the corresponding main body contact surfaces of the tool carrier, so that when the replaceable bracket main body parts are fixed on the tool carrier, the distance between the tool carrier contact surfaces of the two replaceable bracket main body parts gradually increases in the direction away from the carrier outer cover contact side of the tool carrier.

[0012] In order to connect the interchangeable tool to the interchangeable holder, the interchangeable holder can have a groove along the longitudinal axis of the rod for accommodating the interchangeable tool to be fixed to the interchangeable holder. The interchangeable tool receiving opening of the tool shaft (Werkzeugschaft) extending from the interchangeable tool body in the direction of

[0013] In particular, when the same component is used for both interchangeable holder body parts, each interchangeable holder body part can have an interchangeable tool receiving recess that provides a portion of the interchangeable tool receiving opening.

[0014] In order to achieve a positive connection between the interchangeable tool and the interchangeable holder that accommodates it, it is proposed that the tool shaft has an engagement recess that preferably completely surrounds the longitudinal axis of the shaft, and that each interchangeable holder body part has an engagement projection in the area of ​​the interchangeable tool receiving recess that is to be positioned in an engaging manner in the engagement recess. When the interchangeable holder is fixed to the tool carrier, the engagement projections of the two interchangeable holder body parts together form a substantially annular engagement area.

[0015] The engagement recess can be defined in a direction away from the main body of the interchangeable tool by an engagement recess end face, wherein the engagement recess end face is angled relative to the longitudinal axis of the shaft such that the distance between the engagement recess end face and the main body of the interchangeable tool increases starting from the bottom of the recess. This creates a wedging effect that preloads the interchangeable tool in the direction of the interchangeable holder and thus against it.

[0016] This effect can be further supported by defining a coupling protrusion on each replaceable bracket body part by a coupling protrusion end face, wherein, when the replaceable tool is fixed to the replaceable bracket, the coupling protrusion end face is oriented in a direction away from the replaceable tool body and is angled with respect to the longitudinal axis of the rod, so that the spacing between the coupling protrusion end face and the replaceable tool body gradually decreases in the direction of the protrusion apex of the coupling protrusion.

[0017] In order to transmit the forces occurring during floor renovation work and acting on the interchangeable tool to the associated interchangeable holder, an interchangeable tool support surface surrounding the interchangeable tool receiving opening can be provided on the interchangeable holder.

[0018] When using the same part for both interchangeable holder main parts, a partial surface of the interchangeable tool support surface can be provided on each interchangeable holder main part. .

[0019] In an alternative embodiment in which the interchangeable tool can be fixed to the interchangeable holder in a simple and equally stable manner, the interchangeable tool receiving opening can be formed completely in one of the interchangeable holder main parts.

[0020] Here, in order to fix the replaceable tool on one of the replaceable holder main parts, it is proposed that a through hole of a replaceable tool fixing mechanism for fixing the tool rod relative to one of the replaceable holder main parts is provided in the receiving opening bottom of the replaceable tool receiving opening.

[0021] In order to stably support the replaceable tool on the replaceable holder, a replaceable tool support surface surrounding the replaceable tool receiving opening can be provided on one of the replaceable holder main parts. In addition, in order to provide a substantially non-stepped peripheral contour in the transition portion between the two replaceable holder main parts, a replaceable holder main part receiving recess for receiving the other replaceable holder main part is provided in one of the replaceable holder main parts.

[0022] In this configuration, a play-free and stable contact replacement effect can be achieved by prestressing the replaceable tool with a support region against the replaceable holder when the replaceable holder is attached to the tool carrier and the replaceable tool is attached to the replaceable holder. In particular, the replaceable tool is prestressed with its support region against the replaceable holder by means of an engagement projection that engages in an engagement recess.

[0023] The supporting region on the interchangeable tool body can include an annular interchangeable holder supporting surface which at least partially surrounds the tool shaft.

[0024] In another embodiment of the interchangeable tool, the support area on the interchangeable tool body can have a plurality of interchangeable holder support sections that are arranged radially spaced apart from each other and circumferentially spaced apart around the longitudinal axis of the rod. Corresponding to each interchangeable holder support section, an interchangeable tool support section can be provided on the interchangeable holder.

[0025] The invention further relates to a floor dressing roller comprising a roller casing providing a carrier casing and surrounding the roller axis of rotation, and a plurality of roller tools configured according to the invention, wherein the tool carrier of each roller tool is preferably fixed to the roller casing by a material connection.

[0026] To achieve a stable connection to the floor dressing roller, the replaceable holder can be preloaded radially inwards against the tool carrier and / or the roller casing when the replaceable holder is attached to the tool carrier. If the replaceable holder is preloaded radially inwards only against the tool carrier, there is essentially no direct contact between the replaceable holder and the outer circumference of the roller casing. If the replaceable holder is preloaded radially inwards only against the roller casing, the replaceable holder is not preloaded radially inwards against the tool carrier, but is supported on the tool carrier in such a way that a preload is generated radially outwards relative to the roller casing.

[0027] The invention further relates to a housing for a floor dressing roller, comprising: a plurality of housing segments which provide a carrier housing and are arranged in the form of a roller housing which covers the floor dressing roller and surrounds the roller's axis of rotation; and a plurality of roller tools which are constructed according to the invention, wherein the tool carrier of each roller tool is preferably fixed to one of the housing segments by means of a material connection.

[0028] Furthermore, in this embodiment, when the interchangeable holder is fastened to the tool carrier, the interchangeable holder can be prestressed radially inwards against the tool carrier and / or the roller casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be described in detail below with reference to the accompanying drawings, in which:

[0030] Figure 1 shows a perspective view of a floor dressing roller having a plurality of roller tools arranged on its outer circumference;

[0031] Figure 2 Shown Figure 1 A floor dressing roller comprising a tool carrier for a floor dressing tool fixed to its outer circumference;

[0032] Figure 3 shows an exploded perspective view of a roller tool;

[0033] Figure 4 Shown assembled, Figure 3 Roller tools;

[0034] Figure 5 Shown Figure 3 and Figure 4 A perspective view of a tool carrier of a roller tool;

[0035] Figure 6 Shown Figure 3 and Figure 4 A perspective view of one of the two replaceable bracket body parts of the roller tool;

[0036] Figure 7 Shown Figure 3 and Figure 4 A perspective view of another of the two replaceable bracket body components of the roller tool;

[0037] Figure 8 The figure shows the floor dressing roller carrying the roller tool, viewed in the direction of the roller axis of rotation. Figure 3 and Figure 4 A side view of a roller tool;

[0038] Figure 9 In its schematic diagram a) is shown Figure 8 The roller tool shown is along Figure 8 The cross-sectional view taken along line IXa-IXa in FIG. 1 and the schematic diagram b) thereof show Figure 8 The roller tool shown is along Figure 8 A cross-sectional view taken along line IXb-IXb in FIG.

[0039] Figure 10 Shown Figure 8 The roller tool, along Figure 9 b) a longitudinal sectional view taken along line XX;

[0040] Figure 11 shows a perspective view of a replaceable tool configured as a chisel;

[0041] Figure 12 shows a side view of a replaceable tool configured as a tamping steel plate;

[0042] Figure 13 A perspective view showing an alternative design of a roller tool;

[0043] Figure 14 Shown Figure 13 A top view of a roller tool;

[0044] Figure 15 Shown Figure 13 Exploded perspective view of the roller tool;

[0045] Figure 16 Shown Figure 13 A side view of a roller tool;

[0046] Figure 17 Shown Figure 13 The roller tool, along Figure 16 A sectional view taken along line XVII-XVII in FIG.

[0047] Figure 18 Shown Figure 13 The roller tool, along Figure 16 A sectional view taken along line XVIII-XVIII in FIG.

[0048] Figure 19 A side view showing another alternative design of a roller tool;

[0049] Figure 20 Shown Figure 19 The roller tool, along Figure 19 A sectional view taken along line XX-XX;

[0050] Figure 21 Shown Figure 19 The roller tool, along Figure 19A sectional view taken along line XXI-XXI in FIG.

[0051] Figure 22 Shown Figure 19 Exploded perspective view of the roller tool;

[0052] Figure 23 Shown Figure 19 A top view of a roller tool having a replaceable tool configured as a tamping steel plate;

[0053] Figure 24 Shown Figure 23 A side view of a roller tool;

[0054] Figure 25 Shown Figure 23 The roller tool, along Figure 24 A sectional view taken along line XXV-XXV in FIG.

[0055] Figure 26 A perspective view showing another alternative design of a roller tool;

[0056] Figure 27 Shown Figure 26 Exploded perspective view of the roller tool;

[0057] Figure 28 Shown Figure 26 A side view of a roller tool;

[0058] Figure 29 Shown Figure 26 The roller tool, along Figure 28 A sectional view taken along line XXIX-XXIX in FIG.

[0059] Figure 30 Shown Figure 26 The roller tool, along Figure 28 A sectional view taken along line XXX-XXX in FIG;

[0060] Figure 31 A side view of a soil finishing machine with a soil finishing roller, designed as a soil compactor, is shown. DETAILED DESCRIPTION

[0061] Reference below Figures 1 to 30 Before describing in detail the structure of the roller tool that needs to be provided on the floor finishing roller, refer to Figure 31 The structure of a floor finishing machine that can use such a roller tool is described.

[0062] The ground finishing machine 10, which is basically constructed as a soil compactor, comprises an operating platform 14 on a rear vehicle 12 and wheels 16 driven by a drive unit arranged on the rear vehicle 12. The ground finishing roller 20 is arranged around the ground finishing roller 20. Figure 31The roller axis of rotation is rotatably supported on a front vehicle 18, which is connected to the rear vehicle 12 so that it can pivot about a substantially vertical axis. A vibration excitation assembly may be provided within the floor finishing roller 20 to generate an oscillatory acceleration substantially perpendicular to the roller axis of rotation or an oscillatory acceleration substantially tangential to the roller axis of rotation. The floor finishing roller 20 is moved over the ground to be finished U by means of a roller housing 22 surrounding the roller axis of rotation. In the illustrated embodiment, the floor finishing roller 20 is designed as a smoothing roller and can be used, for example, for compacting soil, asphalt, etc.

[0063] The roller tool described in detail below can be mounted directly on the outer circumference of the floor dressing roller 20 or the roller cover 22, so that in this case the roller cover 22 provides the carrier cover 26 carrying the roller tool. Figure 31 In the design shown by the dotted line, the floor dressing roller 20 can be surrounded by a shell 30 constructed with a plurality of shell segments 28, and a roller tool described in detail below can then be arranged on the shell 30, so that the shell 30 or the shell segments 28 arranged one after another in the circumferential direction and fixedly connected to each other provide a carrier outer cover 26 in this design.

[0064] Figure 1 Such a floor dressing roller 20 is shown, on whose roller casing 22, which provides a carrier casing 26, a plurality of roller tools 32 are provided. The roller tools 32 are arranged along a ring around the roller axis of rotation W on the outer circumference 24 of the roller casing 22 or the carrier casing 25, wherein in the rings directly adjacent to one another in the direction of the roller axis of rotation W, the roller tools 32 are arranged offset relative to one another in the circumferential direction.

[0065] Figure 3 and Figure 4 The basic structure of such a roller tool 32 is shown. Each roller tool 32 includes an interchangeable holder 34 having two interchangeable holder body parts 36, 38, which are preferably substantially identical to one another. The interchangeable holder 32 corresponds in its basic structure to the interchangeable holder structure known from WO 2013 / 107545 A2 and has a trapezoidal configuration in a side view (i.e., in a view in the direction of the roller rotation axis W). Each of the two interchangeable holder body parts 36, 38 provides a carrier housing contact surface 40 that matches the circular outer circumference of the roller housing 22 providing the carrier housing 26. In the assembled state, the respective interchangeable holder body part 36, 38 rests with its carrier housing contact surface 40 against the outer circumference 24 of the carrier housing 26 and is held therein under prestressing, as described below.

[0066] The roller tool 32 also includes a tool carrier 46, which (as in Figure 2) are fastened to the outer circumference 24 of the roller shell 22 or the carrier shell 26 , for example by welding (possibly also by screwing), and thereby predetermine the position of the corresponding roller tool 32 on the floor dressing roller 20 .

[0067] Each of the two interchangeable holder main parts 36, 38 provides a tool carrier receiving recess 48. In the assembled state, the tool carrier receiving recess 48 provides a tool carrier receiving space 50, in which the corresponding tool carrier 46 is received. As a result, the tool carrier 46 is completely shielded from the outside by the two interchangeable holder main parts 36, 38 and protected from external influences.

[0068] Two fixing mechanism through holes 54 are provided in each interchangeable support body part 36, 38, through which fixing mechanisms 58 configured as screws can pass and be screwed into internal threaded holes 56 configured in the tool carrier 46. In order to accommodate the fixing mechanism head 60, the fixing mechanism through hole 54 is configured with a widened fixing mechanism head receiving area 62. Figure 4 In the assembled state shown in FIG, the fixing mechanism 58 is completely located inside the interchangeable bracket body parts 36, 38, so that the fixing mechanism 58 and in particular the fixing mechanism head 60 are protected from damage or wear and can therefore also be easily loosened after a longer operation by using corresponding tools.

[0069] In a central region, the interchangeable holder 34 provides a replaceable tool receiving opening 64. In an embodiment in which the interchangeable holder 34 comprises two substantially identical interchangeable holder body parts 36, 38, a replaceable tool receiving recess 66 is provided in each interchangeable holder body part 36, 38. The interchangeable tool receiving opening formed by the two interchangeable tool receiving recesses 66 has a substantially cylindrical structure, and a replaceable tool 70, for example, configured as a chisel, can be received in the interchangeable tool receiving opening. In the region where the two interchangeable holder body parts 36, 38 form the interchangeable tool receiving opening 64, the tool carrier 46 has a recess 73 into which the interchangeable holder 34 or the portion of the interchangeable holder body part 36, 38 providing the interchangeable tool receiving opening 64 can be snapped into place.

[0070] exist Figure 11The replaceable tool 70 shown in FIG and designed as a chisel has a replaceable tool body 72 and a tool shank 68 extending from the replaceable tool body 72 in the direction of the shank longitudinal axis S. An engagement recess 76 is preferably formed in the tool shank 68, which completely surrounds the shank longitudinal axis S and has a substantially trapezoidal structure and is therefore designed to taper radially inwardly toward the recess bottom 78. In particular, the engagement recess 76 thus provides an engagement recess end face 80 oriented toward the replaceable tool body 72, which engagement recess end face 80 is formed as shown in FIG. Figure 10 As shown by the auxiliary line H1 in FIG, it is inclined at an angle not equal to 90° relative to the longitudinal axis S of the rod, and leaves from the radial inside (ie from the bottom surface 78 of the recess) and has a gradually increasing distance from the replaceable tool body 72 radially outward.

[0071] On the two interchangeable holder main parts 36, 38, an engagement protrusion 82 is respectively configured corresponding to the engagement recess 76. The engagement protrusions 82 of the two interchangeable holder main parts 36, 38 form a substantially annular engagement area 84 in the assembled state, and the engagement area 84 engages in the engagement recess 76 of the interchangeable tool 70 that is releasably fixed to the interchangeable holder 34.

[0072] Each of the two engaging projections 82 of the replaceable holder body parts 36, 38 has a trapezoidal structure matching the trapezoidal structure of the engaging recess 76 and is defined on the side facing away from the replaceable tool body 72 in its assembled state by an engaging projection end face 86. Figure 10 The auxiliary line H1 also indicates an angle different from 90° with respect to the longitudinal axis S of the rod, in particular an angle equal to the engagement recess end face 80 . Therefore, the engagement projection 82 is configured to taper in the direction of the projection apex 83 .

[0073] The two engaging projections 82 of the interchangeable holder body parts 36, 38 are shorter in the direction of the shank longitudinal axis S than the engaging recess 76. Consequently, during assembly or in the assembled state, only the engaging recess end faces 80 interact with the engaging projection end faces 86, while the engaging projections 82 do not rest against the tool shank 68 in the other axial end region. This creates a wedge-like interaction between the engaging projection end faces 86 and the engaging recess end faces 80 of the two interchangeable holder body parts 36, 38 during assembly or in the assembled state, which requires prestressing the interchangeable tool 70 toward the interchangeable holder 34. Consequently, the interchangeable tool 70 is pressed with a supporting area 88 formed on the interchangeable tool body 72 against an interchangeable tool supporting surface 92 of the interchangeable holder 34, which annularly surrounds the interchangeable tool receiving opening 64. In the embodiment of the interchangeable tool 70 as a chisel, the supporting area 88 is provided by the interchangeable holder supporting surface 90 annularly surrounding the tool shank 68. The interchangeable tool support surface 92 includes a partial surface 93 on each of the interchangeable holder body components 36 , 38 .

[0074] In the design of the roller tool 32 according to the present invention, the coupling protrusion 82 can also be provided on the tool rod 68 with a coupling protrusion end face 86 that is annular on the coupling protrusion 82 and basically completely surrounds the longitudinal axis S of the rod, while a coupling recess 76 or a section of the coupling recess end face 80 can be formed on the replaceable bracket main body parts 36, 38 respectively.

[0075] The tool carrier 46 rests with its carrier shell contact side 94 against the outer circumferential side 24 of the carrier shell 26 or, in the exemplary embodiment shown, the roller shell 22. Figure 9 and Figure 10 It can be seen in FIG. 1 that a chamfer 96 for accommodating the weld seam is formed on the circumferential region of the contact side 94 of the carrier shell.

[0076] The tool carrier 46 provides body part contact surfaces 98 on two sides facing away from each other (oriented in the direction of the roller rotation axis W when mounted on the carrier shell 26). The body part contact surfaces 98 are inclined radially outward from their region adjacent to the carrier shell contact side 94 or chamfer 96 and thus extend in the radial direction along the roller axis. Figure 9 The auxiliary line H2 shown in b) extends at an angle to the longitudinal axis S of the shaft. Preferably, the two main body contact surfaces 98 of the tool carrier 96 are arranged symmetrically or mirror-symmetrically with respect to a center plane of the tool carrier 46 containing the longitudinal axis S of the shaft, so that the tool carrier 46 has a cross-sectional geometry that widens radially outward, i.e., in the direction away from the contact surface 94 of the carrier housing, and is wedge-shaped or trapezoidal.

[0077] In accordance with the angled positioning of the body part contact surface 98 relative to the longitudinal axis of the rod or the center plane of the tool carrier, each interchangeable holder body part 36, 38 has a complementary curved tool carrier contact surface 100. The interaction of the body part contact surface 98 with the respectively associated tool carrier contact surface 100 creates a wedging effect, by which the interchangeable holder body parts 36, 38 are prestressed in the direction of the carrier housing 26, so that when the two interchangeable holder body parts 36, 38 are loaded in the direction of the tool carrier 46 by tightening the fixing means 58, the interchangeable holder body parts rest securely with their carrier housing contact surfaces 40 against the outer side of the carrier housing 26.

[0078] When assembling the roller tool 32, the two interchangeable holder body parts 36, 38 are first moved laterally onto the tool carrier 46, which is fixed to the carrier housing 26. As the interchangeable holder body parts 36, 38 approach the tool carrier 46 and each other, the tool shaft 68 of the interchangeable tool 70 can also be accommodated in the interchangeable tool receiving recess 66, with the engaging projection 82 engaging the engaging recess 76. Here, the engaging projection end face 86 abuts the engaging recess end face 80, and as the interchangeable holder body parts 36, 38 gradually approach each other, the interchangeable tool 70 is loaded toward the interchangeable holder 34 until its interchangeable holder support surface 90 abuts the interchangeable tool support surface 92. During the relative approach of the two interchangeable holder main parts 36, 38, which is caused or supported by screwing the fixing means 58 into the corresponding internally threaded holes 56 of the tool carrier 46, the tool carrier contact surfaces 100 provided on the interchangeable holder main parts 36, 38 come into contact with the associated main part contact surfaces 98, thereby prestressing the entire interchangeable holder 34 radially inward, i.e., in the direction of the outer circumference 24 of the carrier housing 26. In the assembled state, the interchangeable holder 34 rests securely and without play on the outer circumference 24 of the carrier housing 26 with the carrier housing contact surfaces 40 of the interchangeable holder main parts 36, 38. Simultaneously, the interchangeable tool 70 is securely prestressed against the interchangeable tool support surface 92 of the interchangeable holder 34 and is held on the interchangeable holder 34. In the assembled state, at the replaceable holder 34, when positioned on the carrier housing 26, crushing projections 102, 104 are formed on both sides of the replaceable tool 70 in the circumferential direction, which, on the one hand, help to destroy the foundation U to be repaired and, on the other hand, protect the replaceable holder 34 from excessive wear.

[0079] In order to replace the replaceable tool 70 or to replace a worn replaceable holder body part 36, 38, the fixing means 58, which is basically protected against external influences, can be released and the replaceable holder body part 36, 38, which can be releasably held on the tool carrier 46 by the fixing means 58, can thus be removed from the tool carrier 46, thereby also releasing the replaceable tool 70. In this case, components that are releasable from the tool carrier 46 and need to be replaced due to wear or to perform different working operations can be replaced.

[0080] Figure 12 An alternative design of an interchangeable tool 70' is shown. The interchangeable tool forms a tamping plate with its interchangeable tool body 72, which can be used in particular for compacting soil. The interchangeable tool body 72 is shaped so that, in the assembled state, it rests against the outer contour of the interchangeable holder 34. In particular, the interchangeable tool body 72 has interchangeable holder support sections 106 in its four corner regions, which, in the assembled state, are pressed against complementary interchangeable tool support sections 108 of the interchangeable holder body parts 36, 38 due to the aforementioned interaction between the engagement recesses 76 of the tool shank 68 and the engagement projections 82, thereby supporting the interchangeable tool body 72 securely and without play on the interchangeable holder 34.

[0081] exist Figures 13 to 18 shows another alternative design for a roller tool. In this design, the roller tool 32 is constructed essentially like the previously described design. The roller tool 32 also includes a tool holder 46 and an interchangeable holder 34. The tool holder 46 is secured to the outer circumference 24 of the roller housing 22 by a weld that preferably extends completely around the roller housing 22. The interchangeable holder 34 is constructed with two identical interchangeable holder body parts 36 and 38. In this design, preferably only the tool holder 46 is in contact with the roller housing 22, while the two interchangeable holder body parts 36 and 38, and the interchangeable tool 70 to be held therein, have essentially no direct contact with the roller housing 22. However, the interchangeable holder body parts 36 and 38 cover the weld that secures the tool holder 46 to the roller housing 22 and thus protect it from wear. In this embodiment, the tool holder 46 has a chamfer 47 in its circumferential region adjacent to the outer circumference 24 of the roller housing 22, which serves to increase the strength of the weld.

[0082] Unlike, for example, Figure 3 The design scheme can be seen in Figures 13 to 18In the interchangeable tool 32 of the design form, the two interchangeable holder main parts 36, 38 are fixed to the tool carrier 46 only by two fixing mechanisms 58 configured as screws. Each of the interchangeable holder main parts 36, 38 has a fixing mechanism through-hole 54 corresponding to one of the two fixing mechanisms 58, and the fixing mechanism through-hole 54 has a fixing mechanism head receiving area 62. Each of the interchangeable holder main parts 36, 38 also has an internal threaded hole 56, into which the fixing mechanism 58 passing through the fixing mechanism through-hole 54 of the corresponding other interchangeable holder main part 36, 38 can be screwed. In order to lock the tool carrier 46, the tool carrier 46 has a through-hole 110 corresponding to each pair of fixing mechanism through-holes 54 and internal threaded holes 56, and the fixing mechanism 58 passing through the fixing mechanism through-hole 54 and screwed into the internal threaded hole 56 extends through the through-hole 110.

[0083] Since the two replaceable bracket main body parts 36 and 38 are designed to be identical to each other, during assembly, the two fixing mechanisms 58 are introduced into their respective corresponding fixing mechanism through holes 54 from opposite sides of the replaceable bracket 34 and are screwed into the internal threaded holes 56 of the corresponding other replaceable bracket main body parts 36 and 38 through the through holes 110.

[0084] exist Figures 19 to 22 shows another alternative design for a roller tool. In this design, the design of the tool carrier 46 and its connection to the roller housing 22 essentially correspond to the previously described design, while the two interchangeable holder body parts 36 , 38 of the interchangeable holder 34 are designed differently from one another. The interchangeable tool receiving opening 64 is formed entirely in the interchangeable holder body part 38 . To this end, the interchangeable tool receiving opening has lateral projections 112 , which are received in corresponding recesses 114 in the other interchangeable holder body part 36 when the two interchangeable holder body parts 36 , 38 are secured to the tool carrier 46 .

[0085] In order to fix the replaceable tool 70 on the replaceable holder 34 or the replaceable holder main part 38 having the replaceable tool receiving opening 64, a receiving opening bottom 116 is provided thereon, which defines the replaceable tool receiving opening 64 in the direction of the roller cover 22 or the tool carrier 46, and a through hole 118 is configured in the receiving opening bottom 116. The fixing mechanism 120 implemented as a screw can be screwed into the internal threaded hole 122 of the tool rod 68 of the replaceable tool 70 through the through hole 118 in the receiving opening bottom 116, thereby fixing the replaceable tool 70 on the replaceable holder main part 38. Figure 20As can be seen in the figure, in this design, the tool rod 68 and the interchangeable tool receiving opening 64 accommodating it are constructed to be essentially cylindrical, that is, unstructured and without protrusions and recesses, so that the tool rod 68 can be introduced into the interchangeable tool receiving opening 64 along its longitudinal axis.

[0086] Before the two interchangeable holder main parts 36 and 38 are mounted on the tool carrier 46, the interchangeable tool 70 is secured to the interchangeable holder main part 38 in the manner described above. The interchangeable holder main parts are then positioned on both sides of the tool carrier 46, with the downwardly projecting heads 124 of the fixing means 122 in the tool carrier 46 correspondingly provided with recesses 126 into which the heads 124 engage when the interchangeable holder main part 38 is positioned on the tool carrier 46. Thus, the heads 124 of the fixing means 22 are shielded from the outside during operation and protected from wear or damage.

[0087] After the replaceable bracket main body parts 36, 38 are positioned on the tool carrier 46, the replaceable bracket main body parts are fastened to each other and fixed on the tool carrier 46 by two fixing mechanisms 58 constructed as screws. For this purpose, the replaceable bracket main body part 38 providing the replaceable tool receiving opening 64 has a fixing mechanism through hole 54 corresponding to each fixing mechanism 58. The tool carrier 46 has a through hole 110 corresponding to each fixing mechanism 58, and an internal threaded hole 56 is formed in the replaceable bracket main body part 36 corresponding to each fixing mechanism 58, and the fixing mechanism 58 can be screwed into the internal threaded hole 56. Therefore, in this embodiment, the two replaceable bracket main body parts 36, 38 are also fastened to each other and fixed on the tool carrier 46 only by the two fixing mechanisms 58, wherein, unlike Figures 13 to 18 In the embodiment, on the one hand, the two internal threaded holes 56 and on the other hand, the two fixing mechanism through holes 54 are respectively located in the same interchangeable bracket body part 36 or 38.

[0088] exist Figures 19 to 22 In the embodiment of the roller tool 32 shown, since the replaceable tool receiving opening 64 is completely constructed in the replaceable holder body part 38, the replaceable tool support surface 92 is also completely and therefore circumferentially arranged on the replaceable holder body part 38 without interruption. Figure 20 (As can be seen in the figure) the tool rod 68 is designed to be slightly shorter than the replaceable tool receiving opening 64 that accommodates the tool rod. The replaceable tool 70 can be clamped relative to the replaceable bracket main body 38 by the fixing mechanism 120, so that the replaceable tool 70 is fixedly clamped on the replaceable tool support surface 92 with its replaceable bracket support surface 90.

[0089] exist Figures 19 to 22In the illustrated embodiment of the roller tool 32, the two interchangeable holder main parts 36, 38, designed differently from one another, are also firmly supported on the tool carrier 46 in the manner previously described with reference to the other various embodiments, completely covering the weld seams that secure them to the roller casing 22 and thereby protecting them from wear. No direct supporting contact is established between the interchangeable holder main parts 36, 38 and the outer circumference 24 of the roller casing. The interaction of the interchangeable holder main parts 36, 38 or the tool carrier contact surfaces 100 formed thereon with the main part contact surface 98 of the tool carrier 46 preloads the interchangeable holder main parts 36, 38 radially inwardly in the direction of the tool carrier 46 or the roller casing 22 and with respect to the roller axis of rotation, thereby further strengthening the fixed connection between the interchangeable holder main parts 36, 38 and the tool carrier 46. As previously described, prestressing can be achieved on the outer circumference 24 of the roller casing 22, so that the replaceable holder body parts 36, 38, with their region surrounding the tool carrier 46, rest against the outer circumference 24 of the roller casing 22 or are supported radially inwardly on the outer circumference. Alternatively, in this and all previously described embodiments, the replaceable holder body parts 36, 38 can be prestressed radially inwardly onto the tool carrier 46 and simultaneously supported radially inwardly on the flat region of the tool carrier 46 that is secured to the roller casing 22, thus also covering the weld seam that secures the tool carrier 46 to the roller casing 22, without the replaceable holder body parts 36, 38 themselves coming into direct contact with the roller casing 22. In this case, a gap-like clearance is formed between the replaceable holder body parts 36, 38 and the outer circumference 24 of the roller casing 22. The positioning of the replaceable holder 34 is independent of, for example, wear-induced changes in the structure of the roller casing 22 on its outer circumference 24.

[0090] Figures 23 to 25 It is shown that for designs in which the replaceable holder has replaceable holder body parts that are constructed differently from each other, a replaceable tool 70' that is constructed as a tamping steel plate can also be used. Figure 12 For example, in the side areas or corner areas, there are interchangeable holder support sections that rest against complementary interchangeable tool support sections of the interchangeable holder body parts 36, 38. To simplify assembly, similar to the design described above with the interchangeable tool 70 configured as a chisel, such interchangeable holder support sections 106 can also be configured as surfaces on the interchangeable tool body 72 that surround the tool shaft 68. The complementary interchangeable tool support sections 108 are provided by an annular surface on the interchangeable holder body part 38 that surrounds the interchangeable tool receiving opening 64.

[0091] Figures 26 to 30 Shown Figures 19 to 25A variation of the design of the roller tool 32 is shown in FIG. Figures 26 to 30 In the design of the roller tool 32 shown, the two interchangeable holder body parts 36, 38 are also constructed so that the interchangeable tool receiving opening 64 is completely constructed in the interchangeable holder body part 38. However, as in Figures 19 to 25 In the embodiment, the replaceable bracket main body part 36 is provided for providing a fixing mechanism through-hole 54 of the replaceable bracket main body part 38 and a through-hole 110 of the tool carrier 46 to be screwed into the internal threaded hole 56 of the fixing mechanism 58, which is Figures 26 to 30 The size of the embodiment is significantly smaller than that of Figures 22 to 25 Dimensions in the embodiment.

[0092] Corresponding to the replaceable holder main body part 36, the replaceable holder main body part 38 has a replaceable holder main body part accommodating recess 128 on one side, which is open in the lateral direction and in the direction away from the roller cover 22. In the assembled state, the replaceable holder main body part 36 is basically completely accommodated in the replaceable holder main body part accommodating recess 128, so that basically no step is formed in the transition part to the other replaceable holder main body part 38, but the outer surfaces of the two replaceable holder main body parts 36 and 38 transition to each other approximately flush.

[0093] In the Figures 26 to 30 When such roller tools 32 as shown in FIG are assembled together, as previously described with reference to FIG. Figures 19 to 25 As described above, first, the replaceable tool 70 or 70' is introduced with its tool shaft 68 into the replaceable tool receiving opening 64 of the replaceable holder main part 38 and is fastened therein by the fixing mechanism 120. Then, the replaceable holder main part 38 is placed onto the corresponding tool carrier 46 from the radial outside, and the fixing mechanism 58 is passed through the fixing mechanism through-hole 54 and the through-hole 110, and the replaceable holder main part 36 to be positioned in the replaceable holder main part receiving recess 128 is screwed therein.

[0094] The roller tool arrangement according to the invention, in which only the respective tool holder is non-detachably fastened to the carrier housing, for example by welding, provides a simple way to replace the interchangeable holder and the roller tool held therein when necessary. Since the fastening means for fastening the interchangeable holder to the tool carrier are protected from excessive wear, and the tool carrier itself is protected from wear caused by external influences by the interchangeable holder, the interchangeable holder and the interchangeable tool detachably held therein can be easily replaced even after prolonged operation and subsequent significant wear, without, for example, having to act on the interchangeable holder with welding tools or the like.

Claims

1. A roller tool for a floor finishing roller of a floor finishing machine, the roller tool comprising: a tool carrier (46) which is to be fixed to the outer circumference of the carrier casing (26) of the floor dressing roller (20); A replaceable bracket (34) which can be loosely fixed on the tool carrier (46); and a replaceable tool (70, 70') which can be loosely fixed on the replaceable bracket (34), wherein the replaceable bracket (34) includes two replaceable bracket main body parts (36, 38), wherein when the replaceable bracket (34) is fixed on the tool carrier (46), the two replaceable bracket main body parts (36, 38) form a tool carrier accommodating space (50) for accommodating the tool carrier (46), and are fixed to the tool carrier (46) by a fixing mechanism (58).

2. The roller tool according to claim 1, characterized in that The two replaceable holder main body parts (36, 38) are constructed identically to each other, or / and each replaceable holder main body part (36, 38) has a tool carrier accommodating recess (48) providing a part of the tool carrier accommodating space (50), or / and each replaceable holder main body part (36, 38) has a carrier cover abutment surface (40) to be positioned toward the outer peripheral side (24) of the carrier cover (26) and matching the outer peripheral contour of the carrier cover (26).

3. The roller tool according to claim 1 or 2, characterized in that Each replaceable bracket main body part (36, 38) can be fixed to the tool carrier (46) by at least one fixing mechanism (58), wherein each replaceable bracket main body part (36, 38) has a fixing mechanism through hole (54) including an enlarged fixing mechanism head accommodating area (62) corresponding to each fixing mechanism (58) fixing it to the tool carrier (46).

4. The roller tool according to claim 3, characterized in that Each replaceable bracket main body part (36, 38) can be fixed on the tool carrier (46) by two fixing mechanisms (58).

5. The roller tool according to claim 1 or 2, characterized in that: The tool carrier (46) has a main body abutment surface (98) corresponding to each replaceable bracket main body part (36, 38), and each replaceable bracket main body part (36, 38) has a tool carrier abutment surface (100) for abutting against the corresponding main body abutment surface (98) of the tool carrier (46), wherein the main body abutment surfaces (98) are arranged on the side surfaces of the tool carrier (46) facing away from each other, so that the relative spacing of the main body abutment surfaces (98) of the tool carrier gradually increases starting from the carrier cover abutment side (94) of the tool carrier (46).

6. The roller tool according to claim 5, characterized in that The body part contact surface (98) is arranged symmetrically with respect to a tool carrier center plane of the tool carrier (46).

7. The roller tool according to claim 5, characterized in that The tool carrier abutment surfaces (100) of the two replaceable bracket main body parts (36, 38) are arranged complementarily to the corresponding main body abutment surfaces (98) of the tool carrier (46), so that when the replaceable bracket main body parts (36, 38) are fixed on the tool carrier (46), the distance between the tool carrier abutment surfaces (100) of the two replaceable bracket main body parts (36, 38) gradually increases in the direction away from the carrier cover abutment side (94) of the tool carrier (46).

8. The roller tool according to claim 1 or 2, characterized in that The replaceable holder (34) has a replaceable tool receiving opening (64) for receiving a tool shaft (68) extending from a replaceable tool body (72) in the direction of a shaft longitudinal axis (S) for a replaceable tool (70, 70') to be fixed to the replaceable holder (34).

9. The roller tool according to claim 8, characterized in that Each replaceable holder body part (36, 38) has a replaceable tool receiving recess (66) providing a portion of the replaceable tool receiving opening (64).

10. The roller tool according to claim 9, characterized in that The tool rod (68) has an engagement recess (76) surrounding the longitudinal axis (S) of the rod, and each replaceable support body part (36, 38) has an engagement protrusion (82) in the area of ​​the replaceable tool receiving recess (66) to be positioned in the engagement recess (76) in an engaging manner.

11. The roller tool according to claim 10, characterized in that The tool shaft (68) has an engagement recess (76) which completely surrounds the shaft longitudinal axis (S).

12. The roller tool according to claim 10, characterized in that When the replaceable holder (34) is fixed to the tool carrier (46), the engaging projections (82) of the two replaceable holder main parts (36, 38) together form an annular engaging area (84).

13. The roller tool according to claim 10, characterized in that The engaging recess (76) is defined by an engaging recess end face (80) in a direction away from the replaceable tool body (72), wherein the engaging recess end face (80) is angled relative to the longitudinal axis (S) of the rod so that the distance between the engaging recess end face (80) and the replaceable tool body (72) gradually increases starting from the recess bottom face (78).

14. The roller tool according to claim 13, characterized in that An engaging protrusion (82) is defined on each replaceable bracket main body part (36, 38) by an engaging protrusion end face (86), wherein, when the replaceable tool (70, 70') is fixed on the replaceable bracket (34), the engaging protrusion end face (86) is oriented in a direction away from the replaceable tool body (72) and is angled with respect to the rod longitudinal axis (S), so that the distance between the engaging protrusion end face (86) and the replaceable tool body (72) gradually decreases in the direction of the protrusion apex (83) of the engaging protrusion (82).

15. The roller tool according to claim 8, characterized in that A replaceable tool supporting surface (92) surrounding the replaceable tool receiving opening (64) is arranged on the replaceable support (34).

16. The roller tool according to claim 15, characterized in that A partial surface (93) of the replaceable tool support surface (92) is arranged on each replaceable support body part (36, 38).

17. The roller tool according to claim 8, characterized in that The interchangeable tool receiving opening (64) is completely formed in one of the interchangeable holder body parts (36, 38).

18. The roller tool according to claim 17, characterized in that A through hole (118) is provided in the bottom (116) of the interchangeable tool receiving opening (64), and the through hole (118) is used for a replaceable tool fixing mechanism (120) for fixing a tool rod (68) relative to one of the replaceable bracket main body parts (38).

19. The roller tool according to claim 17, characterized in that A replaceable tool support surface (92) surrounding the replaceable tool receiving opening (64) is provided on one of the replaceable support main body parts (38).

20. The roller tool according to claim 1 or 2, characterized in that When an interchangeable holder (34) is fixed to the tool carrier (46) and an interchangeable tool (70, 70') is fixed to the interchangeable holder (34), the interchangeable tool (70, 70') is pretensioned with a supporting region (88) against the interchangeable holder (34).

21. The roller tool according to claim 10, characterized in that When the replaceable holder (34) is fixed to the tool carrier (46) and the replaceable tool (70, 70') is fixed to the replaceable holder (34), the replaceable tool (70, 70') is pre-tensioned against the replaceable holder (34) with its supporting area (88), and the replaceable tool (70, 70') is pre-tensioned against the replaceable holder (34) with its supporting area (88) via an engaging protrusion (82) engaged in the engaging recess (76).

22. The roller tool according to claim 8, characterized in that When the replaceable holder (34) is fixed to the tool carrier (46) and the replaceable tool (70, 70') is fixed to the replaceable holder (34), the replaceable tool (70, 70') is pre-tightened against the replaceable holder (34) with a support area (88), and the support area (88) includes an annular replaceable holder support surface (90) on the replaceable tool body (72) that at least partially surrounds the tool rod (68).

23. The roller tool according to claim 8, characterized in that When a replaceable holder (34) is fixed to the tool carrier (46) and a replaceable tool (70, 70') is fixed to the replaceable holder (34), the replaceable tool (70, 70') is pre-tensioned against the replaceable holder (34) with a support area (88), and the support area (88) on the replaceable tool body (72) has a plurality of replaceable holder support sections (106) arranged at radial spacings relative to the longitudinal axis (S) of the rod and at circumferential spacings around the longitudinal axis (S) of the rod.

24. The roller tool according to claim 23, characterized in that Corresponding to each replaceable rack support section (106), a replaceable tool support section (108) is arranged on the replaceable rack (34).

25. A floor dressing roller comprising a carrier casing (26), a roller casing (22) surrounding the roller rotation axis and a plurality of roller tools (32) according to any one of the preceding claims, wherein: A tool carrier (46) of each roller tool (32) is fastened to the roller casing (22).

26. The floor finishing roller according to claim 25, characterized in that in, The tool carrier (46) of each roller tool (32) is fixed to the roller casing (22) by means of a material connection.

27. The floor finishing roller according to claim 25, characterized in that When the replaceable holder (34) is fastened to the tool carrier (46), the replaceable holder (34) is preloaded radially inwardly onto the tool carrier (46) and / or the roller casing (22).

28. A housing for a floor dressing roller, the housing comprising: A plurality of housing segments (28) providing a carrier housing (26) and arranged in a manner to cover a roller housing (22) of a floor dressing roller (20) surrounding the roller's axis of rotation; and a plurality of roller tools (32) according to any one of claims 1 to 24, wherein the tool carrier (46) of each roller tool (32) is fixed to one of the housing segments (28).

29. The housing according to claim 28, characterized in that The tool carrier (46) of each roller tool (32) is fixed to one of the housing segments (28) by material connection.

30. The housing according to claim 28, characterized in that When the replaceable holder (34) is fastened to the tool carrier (46), the replaceable holder (34) is pretensioned radially inwardly onto the tool carrier (46) and / or onto the carrier casing (26).

Images