Sleeve for ground refurbishing roller

Abstract

The invention relates to a jacket for a ground finishing roller (20) of a ground finishing machine, which can be rotated about a roller rotation axis, comprising a plurality of jacket sections (40) which are arranged or can be arranged around a roller body (22) of the ground finishing roller (20) and which follow one another in the circumferential direction, a plurality of roller tools (48) being arranged on the outer sides of the jacket sections (40) which are to be positioned away from the roller body, wherein at least one part of the roller tool (48) comprises an exchangeable support which is arranged on the respective sheath section (48) and an exchangeable tool which is arranged or can be arranged on the exchangeable support in such a way that the exchangeable support can be detached from the exchangeable support, wherein a fastening opening is formed in the replaceable holder for receiving a fastening rod of a replaceable tool which is or can be mounted on the replaceable holder, and wherein a tool penetration opening (84) is provided in a sheath section (40) which carries the replaceable holder in association with at least one replaceable holder.

Description

[0001] This application is a divisional application of patent application No. 202110895113.2 entitled “Cover for floor dressing roller” filed with the State Intellectual Property Office on August 3, 2021. Technical Field

[0002] The invention relates to a covering for a floor dressing roller, on which at least one roller tool is arranged, the roller tool having an interchangeable holder and an interchangeable tool which is detachably mounted or can be mounted on the interchangeable holder. Background Art

[0003] WO 2013 / 017545 A2 discloses a floor dressing roller for a floor finishing machine, which floor dressing roller comprises a roller body with a roller shell that rotates about the roller rotation axis during floor dressing operation. A plurality of roller tools are arranged on the outer circumference of the roller shell. The roller tools each comprise a replaceable holder fixed to the outer circumference of the roller shell by welding, the replaceable holder having a fixing opening formed therein and extending substantially radially with respect to the roller rotation axis. The replaceable tool to be arranged on such a replaceable holder comprises a fixing rod (Befestigungsschaft) that can be moved into the fixing opening. The fixing rod accommodated in the fixing opening fixes the replaceable tool thereon by a clamping action or a locking action.

[0004] In the construction of a roller tool with an interchangeable holder and an interchangeable tool known from EP 2 843 135 A1, a fixing rod of the interchangeable tool, which is introduced into a fixing opening of the interchangeable holder, is locked on the interchangeable holder by a retaining element which is inserted into a lateral opening of the interchangeable holder and engages around the fixing rod.

[0005] In order to release the interchangeable tool fastened in this way to the interchangeable holder, a tool, for example, designed in the manner of a crowbar, is introduced laterally through an opening formed in the interchangeable holder into the interior of the interchangeable holder enclosed by the interchangeable holder until the tool is positioned with its force application area behind a fixing rod of the interchangeable tool received in the fixing opening of the interchangeable holder. The fixing rod is forced by a lever movement or a wedge effect of the tool supported on the roller sleeve and thereby moved outward in a certain direction from the fixing opening in which it is received. Summary of the invention

[0006] The object of the present invention is to provide a covering for a floor dressing roller, in which an interchangeable tool of the roller tool, which is accommodated in an interchangeable holder, can be detached from the interchangeable holder in a simple manner.

[0007] According to the present invention, the object is achieved by a covering of a floor dressing roller rotatable about a roller rotation axis for a floor dressing machine, the covering comprising a plurality of covering sections following one another in the circumferential direction and being arranged or being arrangeable around a roller body of the floor dressing roller, wherein a plurality of roller tools are arranged on the outer side of the covering section to be positioned away from the roller body, wherein at least a portion of the roller tools (preferably all the roller tools) comprises a replaceable holder arranged on the corresponding covering section and a replaceable tool arranged or being arrangeable on the replaceable holder in a manner detachable from the replaceable holder, wherein a fixing opening for accommodating a fixing rod of the replaceable tool arranged or being arrangeable on the replaceable holder is formed in the replaceable holder, wherein in association with at least one (preferably each) replaceable holder a tool passage opening is provided in the covering section carrying the replaceable holder.

[0008] By providing such a tool passage opening, it is possible to act on the fixing rod of the replaceable tool carried on the replaceable holder by means of a tool guided through the tool passage opening, and thereby to release the replaceable tool from the replaceable holder. It is therefore not necessary to engage the replaceable holder laterally by means of a tool acting in a lever-like or wedge-like manner. Since such a roller tool according to the invention is arranged with the replaceable holder and the replaceable tool on the covering for the floor dressing roller and not directly on the roller covering of the floor dressing roller itself, the replaceable tool to be replaced can subsequently be released from the replaceable holder accommodating the replaceable tool when the covering is removed from the roller body. This makes it possible, on the one hand, to carry out the process of removing the replaceable tool from the replaceable holder accommodating the replaceable tool significantly simpler, and on the other hand, to operate the floor dressing machine either without the covering of the floor dressing roller or with another covering on the floor dressing roller during the handling of the covering.

[0009] In order to obtain direct access to the fastening rod that allows for release, it is provided that the tool passage opening provided in connection with the at least one interchangeable holder is arranged substantially coaxially with the fastening opening formed therein.

[0010] In at least one interchangeable holder, an interchangeable holder interior space can be formed, wherein a fixing opening arranged in the interchangeable holder opens toward the interchangeable holder interior space, and a tool passage opening arranged in association with the interchangeable holder opens toward the interchangeable holder interior space. In this case, the interchangeable holder interior space can be provided, for example, by a volume space which preferably substantially continues the fixing opening in a cylindrical manner. Alternatively, such an interchangeable holder interior space can be widened laterally relative to the fixing opening, whereby in such an interchangeable holder, structural material can be saved and thus also weight can be saved.

[0011] If, when a replaceable tool is placed on at least one replaceable holder, the fixing rod of the replaceable tool extends into the inner space of the replaceable holder and is positioned in a manner opposite to or engaged in the tool penetration opening of the tool engagement end, the tool engagement end is positioned so that it can be directly acted upon by means of a suitable tool.

[0012] Since in the embodiment according to the invention no lateral engagement in the interchangeable holder is required in order to release the interchangeable tool, in a particularly advantageous embodiment it is provided that when the interchangeable tool is placed on at least one interchangeable holder, the interior of the interchangeable holder is essentially opened only via the tool through-opening which is open to the interior of the interchangeable holder. Thus, lateral engagement openings in the interchangeable holder can be avoided, so that, in particular when the interchangeable tool is carried in the interchangeable holder, the interchangeable holder covering the tool through-opening completely closes the tool through-opening to prevent dirt from entering.

[0013] Alternatively or additionally, it can be proposed that when the replaceable tool is placed on at least one replaceable support, the tool penetration opening is basically closed by the fixing rod of the replaceable tool. In this way, dirt can be prevented from entering the corresponding tool penetration opening.

[0014] The present invention further relates to a method for replacing a replaceable tool mounted on at least one replaceable holder at a sheath constructed according to the invention, in which method a force is applied through a tool passage opening to a fixing rod accommodated in a fixing opening of at least one replaceable holder when a sheath section is at least partially detached from a roller body, so that the fixing rod is moved out of the fixing opening of the at least one replaceable holder.

[0015] In order to move a fixing rod, which is usually held in the fixing opening by means of a great force, out of the fixing opening, it is proposed to apply a force by means of impact and / or squeezing in order to move the fixing rod out of the fixing opening.

[0016] For this purpose, for example, the fixing rod can be force-applied by means of a force-applying tool acting on the fixing rod through the tool passage opening. Such a force-applying tool can be configured, for example, in the form of a bolt.

[0017] Furthermore, it can be provided that the fixing rod is subjected to force by striking the force-exerting tool with the aid of an impact tool. Such an impact tool can be, for example, a hammer.

[0018] The invention further relates to a floor finishing roller for a floor finishing machine, comprising a roller body and a sheathing designed according to the invention and surrounding the roller body.

[0019] The invention also relates to a soil finishing machine having at least one soil finishing roller designed according to the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is described in detail below with reference to the accompanying drawings. The accompanying drawings show:

[0021] Figure 1 A perspective view showing a floor finishing machine having floor finishing rollers;

[0022] Figure 2 Show Figure 1 A three-dimensional view of a floor finishing roller of a floor finishing machine;

[0023] Figure 3 Show Figure 2 A floor dressing roller having a covering section of a working sleeve arranged on the roller body and detached from the roller body of the floor dressing roller;

[0024] Figure 4 Shows a section of the jacket viewed from the inside;

[0025] Figure 5 Show Figure 2 disengagement of the replaceable tool of the roller tool of the floor dressing roller held in the replaceable holder;

[0026] Figure 6 A roller tool is shown which is arranged on a covering section of a covering for a floor dressing roller and has an exchangeable holder and an exchangeable tool. DETAILED DESCRIPTION

[0027] exist Figure 1 In the figure, the ground finishing machine is represented by 10 as a whole. The ground finishing machine 10 includes a rear vehicle 12, which has a drive unit arranged thereon and a wheel 14 driven by the drive unit (for example, a diesel internal combustion engine). In addition, a cabin 16 for an operator who operates the ground finishing machine 10 is provided on the rear vehicle 12.

[0028] The floor dressing roller, generally designated 20, is mounted rotatably about a roller rotation axis W on a front carriage 18 which is pivotably connected to the rear carriage 12. Figure 2 The floor dressing roller 20 shown in more detail in FIG. 1 is constructed by means of a roller body 22 which is rotatably mounted on the front vehicle 18. The roller body 22 comprises a support structure 28 which, in the illustrated embodiment, is constructed by means of two support plates, also generally referred to as round blanks, which are supported via corresponding support areas on lateral frame areas 30, 32 of the front vehicle 18 so as to be rotatable about the roller rotation axis W. The two support plates are fixed in their outer circumferential area, for example by welding, to a substantially cylindrical and annularly closed roller shell 34.

[0029] A covering, which is designated as a whole by 38, is provided on the outer side 36 of the roller shell. In the exemplary embodiment shown, the covering 38 comprises six covering segments 40 which follow one another in the circumferential direction and directly adjoin one another and which have segment shells 42 which are curved to match the circularly curved outer circumferential contour of the roller shell 34. Figure 2 It can be seen that the segment shells 42 are connected to each other at their longitudinal edges in the circumferential direction. )44 are toothedly engaged with each other.

[0030] In the illustrated design example, the compacting roller 20 is designed as a so-called ground crushing roller and, for this purpose, has a plurality of roller tools 48 on the working outer side 46 of the casing 38 at each casing section 40. In the illustrated example, the roller tools 48 are designed with a replaceable holder 50, which is fixed to the respective casing section 40, for example by welding, and a replaceable tool 52 in the form of a chisel, which is accommodated in the replaceable holder.

[0031] Each casing segment 40, which is preferably identical to one another and is designed essentially mirror-symmetrically with respect to the longitudinal center, has four connecting regions 54, 56, 58, 60 at axial spacings from one another in the direction of the roller axis of rotation W. In each of these four connecting regions 54, 56, 58, 60, the casing segment 40 can be fastened to the roller shell 34 of the roller body 22, so that a stable connection to the roller body 22 is ensured over the entire axial length of the casing segment 40. In this case, the connecting regions 54, 60 located in the axial end regions 62, 64 of the casing segment 40 form an end connecting region 66 or 68, respectively, while the connecting regions 56, 58 located closer to the longitudinal center region of the casing segment 40 form a central connecting region 70, 72, respectively.

[0032] In each connection region 54, 56, 58, 60, one or more fixing means 76 are arranged on the segment shell inner side 74 of the segment shell 42 facing the roller shell outer side 36. The fixing means 76 arranged in the central connection region 70, 72 are designed in a plate-like manner and are fixed to the segment shell 42, for example by welding, so that they extend essentially in the circumferential direction.

[0033] In conjunction with the plate-shaped fixing means 76 arranged in the intermediate connection regions 70, 72 and extending substantially in the circumferential direction, a fixing means through-opening 78 which is slit-shaped and extends substantially longitudinally in the circumferential direction is provided in the roller shell 34. The fixing means through-opening is arranged axially adjacent to the corresponding support plate of the support structure 28.

[0034] In connection with each such cut-out-shaped fixing means through-opening 78 or in connection with each fixing means 76 of the intermediate connecting regions 70, 72 to be positioned through such fixing means through-opening 78, a fixing region 80 is formed on the roller body 22. In the illustrated design example, the fixing regions 80 are formed at the radially outer region of the respective support disk of the support structure 28 and each comprise two openings which are provided with an internal thread, for example.

[0035] When the corresponding jacket section 40 is mounted on the roller body 22, the plate-shaped fixing means 76 of the intermediate connecting regions 72, 74 are guided through fixing means through-openings 78 arranged axially directly next to the support plate, so that they protrude radially inwards on the inner side of the roller shell. Screws can be guided through the openings provided in the fixing means 76 and screwed into openings of the fixing region 80 in the correspondingly assigned support structure 28.

[0036] The fixing means 76 arranged in the end connection areas 66, 68 are designed in a bolt-like manner and extend substantially radially inwardly at the inner side 74 of the sheathing segment. The bolt-like fixing means 76 are configured with a screw foot widened relative to the bolt rod, which can be fixed to the corresponding segment shell 42 by welding, so that the bolt-like fixing means 76 of the end connection areas 66, 68 are fixedly arranged on the segment shell 42. It can be seen here that in no area of ​​the fixing means 76 are openings formed in the segment shell 42 respectively carrying the fixing means, for example, so that the corresponding fixing means can be guided through the segment shell. Therefore, in particular in the area where the fixing means 76 are arranged on the segment shell 42, no openings that are subject to wear or impair the working result are formed on the outer side of the segment shell, for example, which is exposed to the outside.

[0037] In conjunction with the bolt-shaped fixing means 76 provided in the end connection regions 66, 68, uniform, notch-shaped, bolt-shaped through-openings 78 extending longitudinally essentially in the circumferential direction are provided in the roller shell 34. The fixing means through-openings 78 provided in the axial end regions of the roller shell 34 have a widening in the longitudinal region at their longitudinal midpoint. The bolt foot of the bolt-shaped fixing means 76, which is to be positioned so as to engage in the fixing means through-openings 78, can be accommodated in the widening.

[0038] When the casing segments 34 are in radially outer contact with the roller shell 34, the bolt-shaped fixing means 76 arranged in the end connection areas 66, 68 protrude radially inwardly from the roller shell 34. In this case, two bolt-shaped fixing means 76 respectively associated with different casing segments 34 are arranged in pairs adjacent to each other in the circumferential direction and surround the coupling device 82 by corresponding clamping jaws and are thus fixed relative to the support shell 34.

[0039] In the region of the roller tool 48, a tool passage opening 84 is formed in the segment shell 42 in order to access the replaceable tool 52 from the inside and thus to be able to detach the replaceable tool from the replaceable holder 50. The tool passage opening 84 is covered from the outside by the replaceable holder 50, so that there is no risk of material passing through the tool passage opening 84 or of wear in the region of the tool passage opening 84.

[0040] Figure 4 It is shown that such a tool penetration opening 84 is provided in connection with each replaceable holder 50 carried on the segment shell 42, so that when the covering segment 40 is detached from the roller body 22, the tool penetration opening 84 is provided in the following reference to Figure 5 and 6 In the manner and method described, the replaceable tool 52 carried in the replaceable holder 50 can be removed, for example, when the replaceable tool is worn or should be replaced with another type of replaceable tool. Since the process of updating or replacing the replaceable tool 50 can be carried out in a state where the sheathing section 40 of the sheathing 38 is removed from the roller body 22, on the one hand, the process of detaching the replaceable tool 52 can be easily performed, and on the other hand, for example, by placing another sheath 38 on the roller body 22, the floor finishing machine can still be used during the execution of this operation.

[0041] Figure 5 and Figure 6 The replaceable holder 50 is shown arranged on the outer circumference of the segment shell 42 of the roller shell segment 40. The replaceable holder can be constructed, for example, in the manner disclosed in the document WO 2013 / 017545 A2 or EP 2843135 A1. The replaceable holder 50 can have two foot areas 86, 88 arranged one after another in the circumferential direction and connected to the outer side of the segment shell 42 by welding, which foot areas support the body area 90 and the fixing opening 92 formed therein, or are formed integrally with it. Between the foot areas 86, 88 and the body area 90, a replaceable holder inner space 94 is formed, which is radially inwardly bounded by the segment shell 42. In the design example shown, a pin-shaped or protruding fixing rod 96 of the replaceable tool 52, which is configured as a chisel, for example, is configured with a round (e.g., perfectly circular) cross-sectional geometry, extends through the fixing opening 92 and is located in the replaceable holder inner space 94 with a tool engagement end 98. The fixing rod 96 can be held in the fixing opening 92 accommodating the fixing rod by a clamping or locking effect, so that the replaceable tool 52 is prevented from being disengaged from the replaceable holder 50 carrying the replaceable tool during operation. The clamping or locking effect can be produced, for example, in the following manner: an annular spring-like locking element is provided in the inner circumferential groove 104 open to the fixing opening 92, and the locking element can be locked into the corresponding outer circumferential groove at the fixing rod 96.

[0042] exist Figure 6 , an alternative way of holding the replaceable tool 52 on the replaceable holder 50 is shown. In the replaceable holder 50, openings 106, 108 are formed between the two foot regions 86, 88, through which the replaceable holder interior space 94 is laterally open. Retaining elements 110, 112 can be pushed laterally into the lateral openings 106, 108, so that the retaining elements and the retaining plates 114, 116 respectively carried thereon, for example, made of metal material, engage in the circumferential groove 118 at the fixing rod 96. The two retaining elements 110, 112 can be fixedly connected to each other in this state, for example by screwing, so that they are protected from being removed from the openings 106, 108.

[0043] The tool penetration opening 84 formed in the segment shell 42 in association with the replaceable holder 50 is preferably arranged so that it is coaxial with the fixed opening 92 or the opening longitudinal axis L of the fixed opening 92. This means that when the replaceable tool 52 is carried in the replaceable holder 50, the fixing rod 96 is also positioned with its tool engagement end 98 substantially coaxially with the tool penetration opening 84 and, for example, directly opposite the tool penetration opening. In the case of corresponding dimensioning, the fixing rod 96 can extend into the tool penetration opening 84 with its tool engagement end 98. When the replaceable tool 52 is carried on the replaceable holder 50, the tool penetration opening 84 is substantially covered or closed by the fixing rod 96 which terminates at or in the tool penetration opening 84 and is formed with approximately the same cross-sectional dimensions as the tool penetration opening, so that dirt or soil materials, etc., which enter the interior space 94 of the replaceable holder laterally, cannot reach the tool penetration opening 84. Since, as described above, there is no need to reach laterally into the interior space 94 of the replaceable holder in order to disengage the replaceable tool 52, the replaceable holder 50 can be closed over its entire circumference, especially when the replaceable tool 52 is held in the fixed opening 92 of the replaceable holder 50 by locking, so that in principle dirt cannot enter the interior space 94 of the replaceable tool, which can be provided, for example, by a fixed opening 92 extending radially inward or a volume space area connected thereto.

[0044] In order to release the replaceable tool 52 from the replaceable holder 50, for example, after the two retaining elements 110, 112 have been removed from the replaceable holder 50, a force-applying tool 100, which is designed, for example, in the form of a bolt, can be introduced through the tool passage opening 84 to the tool engagement end 98 of the fixing rod 96. Subsequently, an impact can be performed on the force-applying tool 100 by means of an impact tool 102, which is designed, for example, as a hammer, and the fixing rod 96 can thus be released from the replaceable holder, wherein the friction clamping effect caused by the slightly conical shape of the fixing rod 96 and the fixing opening 92 accommodating it is overcome and the fixing rod 96 is moved or punched out of the fixing opening 92 accommodating it until the replaceable tool 52 is completely released from the replaceable holder 50. Subsequently, a new or further replaceable tool 52 can be pushed or pressed into the fixing opening 92 of the replaceable holder 50 from the outside until the replaceable tool with its fixing rod 96 is completely accommodated in the fixing opening 92 and supported, for example, with the tool head, at the body region 90 of the replaceable holder 50. When a locking connection is used, the locking state is automatically produced when the fixing rod 96 is pushed in. Figure 6 In the case of the retaining elements 110 , 112 shown in FIG. 1 , said retaining elements can be arranged in the openings 106 , 108 of the interchangeable holder 50 in such a way as to circumferentially engage the securing rod 96 after the securing rod 96 has been introduced into the securing opening 92 .

[0045] Since the roller tool with the replaceable holder and the replaceable tool is arranged on a sheath according to the invention, which can be detachably attached to the roller body and can be placed around the roller body, the following possibilities exist: Figure 5 The method and process shown in the figure act on the replaceable tool from the inside of the corresponding covering section and thus release the replaceable tool from the corresponding replaceable holder. This is particularly advantageous because the roller tool arranged in the longitudinal center area of ​​the corresponding floor dressing roller is basically not accessible from the inside of the roller shell.

[0046] The principle of the invention can be used in a floor dressing roller which, as in the previously described design example, comprises a roller body which itself does not provide a working outer side, but serves only as a carrier for a working cover provided by a sheathing, which carrier is formed on its working outer side in a shape suitable for the respective work process to be performed. The roller sheath of such a roller body thus forms only a carrier sheath which is provided and designed to carry a structure providing a working outer side (i.e., a sheathing serving as a working cover).

[0047] Alternatively, the embodiment according to the invention for the covering of a floor dressing roller can also be used if the covering is to be attached to the outer circumference of a floor dressing roller or a roller body, which itself can also provide the working outer side. For example, such a roller body or its roller covering can be provided with a substantially smooth, unstructured outer circumferential contour and thus, for example, be used to compact asphalt materials or the like. If such a floor dressing roller is subsequently used in other working processes, for example for breaking up solid ground, the floor dressing roller can be surrounded by a covering that includes the above-described structure with a plurality of covering segments and roller tools carried on their segment shells. In this embodiment, for example, the individual covering segments can be fixedly connected to one another in the circumferential direction, for example screwed together, in order to achieve an annular structure of the roller covering surrounding the floor dressing roller.

[0048] It should also be pointed out that the embodiment according to the invention for the covering of a floor dressing roller can obviously also be used in combination with other replaceable tools. Instead of the pointed chisel shown in the present application, for example, a chisel or a pressing plate designed in the form of a cutting edge can also be used as an replaceable tool in combination with a replaceable holder arranged on the outer circumference of the covering.

Claims

1. A covering for a floor dressing roller (20) rotatable about a roller rotation axis (W) for a floor dressing machine (10), the covering comprising a plurality of covering sections (40) following one another in the circumferential direction and arranged or capable of being arranged around a roller body (22) of the floor dressing roller (20), wherein a plurality of roller tools (48) are arranged on the outer side of the covering section (40) to be positioned away from the roller body (22), characterized in that: At least a portion of the roller tool (48) comprises a replaceable holder (50) arranged on the outside of the corresponding sheath section (48) and a replaceable tool (52) arranged or mountable on the replaceable holder (50) in a manner that allows it to be detached from the replaceable holder, wherein a fixing opening (92) for a fixing rod (96) for accommodating the replaceable tool (52) arranged or mountable on the replaceable holder (50) is formed in the replaceable holder (50), and a tool passage opening (84) is provided in the sheath section (40) supporting the replaceable holder in association with at least one replaceable holder (50).

2. The package according to claim 1, It is characterized in that A tool passage opening (84) provided in connection with the at least one interchangeable holder (50) is arranged coaxially with a fastening opening (92) formed therein.

3. The package according to claim 1 or 2, It is characterized in that A replaceable holder interior space (94) is formed in at least one replaceable holder (50), wherein the fixing opening (92) arranged in the replaceable holder (50) is open toward the replaceable holder interior space (94), and the tool passage opening (84) arranged in association with the replaceable holder (50) is open toward the replaceable holder interior space (94).

4. The package according to claim 3, It is characterized in that When the replaceable tool (52) is placed on the at least one replaceable holder (50), the fixing rod (96) of the replaceable tool (52) extends into the inner space (94) of the replaceable holder and is positioned in a manner opposite to the tool engaging end (98) of the tool penetration opening (84) or engaged in the tool penetration opening (84).

5. The package according to claim 3, It is characterized in that When the replaceable tool (52) is placed on the at least one replaceable holder (50), the replaceable holder interior (94) is opened only via the tool passage opening (84) which opens into the replaceable holder interior.

6. The package according to claim 1 or 2, It is characterized in that When the replaceable tool (52) is mounted on the at least one replaceable holder (50), the tool passage opening (84) is closed by the fixing rod (96) of the replaceable tool (52).

7. A method for replacing a replaceable tool (52) mounted on the at least one replaceable holder (50) at a sheath (38) according to any of the preceding claims, in which method a force is applied through the tool penetration opening (84) to the fixing rod (96) accommodated in the fixing opening (92) of the at least one replaceable holder (50) when the sheath section (40) is at least partially disengaged from the roller body (22) so as to move the fixing rod (96) out of the fixing opening (92) of the at least one replaceable holder (50).

8. The method according to claim 7, It is characterized in that The fixing rod (96) is moved out of the fixing opening (92) by applying force by means of impact and / or squeezing.

9. The method according to claim 7 or 8, It is characterized in that The fixing rod (96) is forced by a force applying tool (100) that acts on the fixing rod through the tool penetration opening (84).

10. The method according to claim 9, It is characterized in that The fixing rod (96) is forced by impacting the force applying tool (100) with the aid of an impact tool (102).

11. A floor finishing roller for a floor finishing machine, comprising a roller body (22) and a sheath (38) surrounding the roller body (22) according to any one of claims 1 to 6.

12. A floor finishing machine comprising at least one floor finishing roller (20) according to claim 11.

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