DE102005024580B3 - Method of emplacing cement bed for paving uses machine for screeding cement and compressing surface - Google Patents

Abstract

The method of emplacing a soil moistened cement bed involves moving a preparation machine (1) in a given direction so that the cement is screeded by a scraping edge (8) on the machine. The machine also has a compressor for pressing the cement surface and the top surface of the cement is passed through a rotary and -or translatory extractor (9). The remaining mortar is removed from the screened and compressed cement layer with a template rail (22) on the machine. Claims include a machine for carrying out the method.

Description

The The invention relates to a method for creating a soil-moist mortar bed for the Laying tiles or slabs and a device for carrying out the Process.

at construction work with rapid construction progress, especially in commercial buildings is the tiler often faced with the task, still relatively young surfaces as possible quickly covered with tiles or plates. The DIN 18157 or DIN 4725 requires certain periods of time to a freshly introduced underground may be covered with tiles or plates. The reason for the relative long periods to occupancy is the usual in a cement screed specific Component shortening by Cement setting, causing creep and shrinkage. An assessment of the underlay is due to the prevailing Ambient conditions such as temperature, humidity etc. are often difficult. As shrinkage is called the shortening of cementitious mortars and Concrete by drying out. Creeping becomes permanent deformations a component under permanent load. The creep process runs as well like the fading over Years. Since laying errors occur due to these circumstances only after years, special care must be taken when creating the flooring, especially when it comes to mechanically highly resilient floor coverings.

Of the Zentralverband der deutschen Baugewerbes has published a leaflet entitled "Mechanisch hochlastastbare Flooring made of ceramic tiles and slabs "the essential requirements for planning and execution of such a floor covering summarized. Mechanically high load capacity Flooring be especially for Used areas where heavy loads with industrial trucks be transported and parked. To be functional in such areas high resilient floor coverings to be able to create have to already in the planning of the mechanical loads, the ceramic Material, the floor construction and the laying method matched be. For cement screeds come as a substrate for tile coverings only the strength classes ZE12 and ZE20 in question. The higher strength classes are with higher ones Cement added connected, which have a higher shrinkage behavior during curing. This would create unfavorable stresses in a dimensionally stable tile covering.

One special problem area is a mortar bed. The relative low compressive strengths of cement mortars can only by a particularly professional installation can be compensated. The decisive factor here is in addition to the mortar composition, the water / cement factor and manual or mechanical compaction. While a cement screed due to its compared to a mortar bed regularly higher humidity is relatively easy to compact, this is in mortar bedding, in particular in mortar beds for high resilient floor coverings, much more difficult. The mortar bed may only have low humidity, as the tiles in the Unlike a dried cement screed in the fresh mortar bed be moved. Also comes through the used Konktatschichten Moisture in the mortar bed. Accordingly, the mortar beddings relatively dry, this means, they are usually moist with earth.

The lower humidity makes the compaction of the mortar bedding extraordinarily difficult. Unlike cement screeds, where a jarring shingling of the material takes place, this earth-moist mortar bedding not the case. An earth-moist mortar bedding is to some extent compaction-unwilling and is therefore subject to large Density fluctuations. In the usual Mortar bed insertion arise e.g. precompressed by footprints Put. When re-compacting by pounding or by means of a vibrating plate become the areas adjacent to the precompressed areas only insufficiently compacted. From these density fluctuations in the mortar bed ultimately result in strength fluctuations. Therefore, a uniform compression of mortar bedding as extremely difficult Process considered.

In the "Screed Standard" DIN-EN 18560, a quality assessment for screeds is performed by comparing the result of an aptitude test of a specimen prepared under optimum processing conditions and the result of a confirmation test on a specimen of the mortar bed actually produced. In the confirmation test on the mortar bed actually created considerable discounts of up to 30% are allowed compared to the aptitude test. For example, as a guideline for the suitability test of a cement screed of strength class ZE20, assume a value of 30 N / mm ² , so that the screed achieves a nominal compressive strength of 20 N / mm ² . There are differences of over 50% in compressive strength between the ideal processing conditions for the suitability test and the actual site conditions. These fluctuations, which are already provided for in the "Screed Standard" DIN-EN 18560, are at least just as great for non-compulsory mortar bedding, so that it is difficult to specify a limit value for the load-bearing capacity of an earth-moist mortar bedding.

Also higher strengths of the mortar bedding taken alone are no solution to the problem of tightness fluctuations and the resulting strength fluctuations. The addition of more cement would only result in mortar bed shrinkage, which in turn creates tensions between the tiling and the mortar bed, ultimately decreasing the bond strength.

Of these, The invention is based on the object, a method for producing low shrinkage, homogeneously compacted and uniform dimensionally stable mortar bedding made of earth-moist mortar for the Laying tiles or plates as well as a finishing device to carry out of such a procedure.

The Invention solves the procedural part the object by the features of claim 1.

advantageous Embodiments are the subject of the dependent subclaims.

The inventive method uses a finishing device, which is in a given Direction is moved, wherein the earth-moist mortar to be applied by means of a peeling edge of the finishing device is first planed. The feeder of the mortar can be done manually, but preferably by machine. Essential is that before the peel a sufficient amount of mortar is available.

Then done a compaction of the leveled mortar by a compressor, which is also part of the finishing device is. The compressor is in particular a vibratory compressor.

in the Following the compaction is an upper layer of the planed and compacted mortar by a rotationally and / or translationally moving removal means removed the finishing device. This step is special important because the bulk density of the leveled mortar be uneven can, taking these irregularities to be expressed during compression due to unevenness of the surface. These Bumps are caused by the rotational and / or translational Moving removal agent removed, so that the desired mortar bed made with high precision can be. Subsequently are still mortar residues from the leveled, compacted and removed mortar with a the Abtragmittel downstream Schableiste the finishing device away. Although it is theoretically possible, a translationally moving To provide Abtragmittel, transversely to the direction of movement of the finishing device on the mortar bed is moved, just like a tiler moving it by manual removal would. However, it has been found that this smoothing motion in a humid mortar to a closure of the superficial Pores leads, which in turn prevents the penetration of a contact layer, e.g. a cementitious slurry, prevented. In the context of the invention, however, an improved composite adhesion aimed at, the transition area between the mortar bedding and the contact layer, a penetration of the contact layer in the mortar bedding should allow. Therefore, the mortar bedding a purposefully roughened surface have. The roughening can be introduced in the form of grooves or grooves in the surface or also by a variety of smaller needle-like depressions. While Creasing and scoring by contouring the peg relative can be easily implemented, can a variety of smaller wells realized even with a straight strip with straight bottom edge be that surface so to speak is scratched so as to increase the surface pore volume enlarge. The ski bar can therefore also be referred to as a scratch.

advantageous Embodiments of the inventive concept are the subject of the dependent claims.

It is considered advantageous when the mortar from a distribution chamber the finishing device is applied to a substrate. The Distribution chamber is preferably open to the ground, so that the finishing device does not bring in the entire weight of the mortar must wear. The distribution chamber is used for controlled or regulated Application of the mortar to the underground. The distribution chamber can also have a discharge slot on at least one of its longitudinal sides, through which mortar Applied to the substrate and then leveled by the Abziehkante becomes. The distribution chamber can also serve the abraded upper layer and the mortar residues to take over a return agent again in front of the peeling edge, that is be returned to the distribution chamber. Within the distribution chamber, the mortar is evenly distributed by distribution means, around an uneven landfill and minimize the resulting density differences as much as possible. The distribution means may in particular be a distribution screw.

It but it is also possible the mortar in front of a distributor plate whose lower edge is the peeling edge forms. Unlike a distributor plate is a distribution chamber closed at the edge, allowing more mortar directly in the finishing device to disposal stands.

Essential for the creation of a suitable mortar bed is the accuracy with which the process is carried out. It is provided that the finishing device has a planning unit comprising the ablation means, the guide bar and level sensor means which react to an optical reference plane, which is articulated to a base frame of the finishing device and is held in a desired position corresponding to the optical reference plane by means of a lifting device. This is done via a so-called laser leveling. Level sensor means coupled to the planning unit evaluate the luminance of a laser beam with a measurement accuracy of +/- 0.1 mm. In this way, it is possible to create a high-precision applied mortar bed, namely at area powers of 200 m ² / h and more.

One Another important aspect is that between the compressor and the Abtragmittel measuring means are arranged, which the height of the compacted mortar measure up. The measured value serves as a parameter for setting the altitude the peeling edge. The measuring means are in particular around an ultrasonic head coupled to the planning unit, the Measures the distance to the compacted mortar without contact. Dependent on from this distance can be adjusted, if at constant Compressor capacity to the compressor more or less mortar for disposal must be made. The amount of mortar can be over the altitude adjust the peel edge. If the distance between measuring means and surface of compacted mortar gets bigger, is called this, that the peel edge must be raised so that at the same time permanent compression of the aforementioned distance again reduced to the nominal size can be. Accordingly, the peel edge must be set lower when the distance between the surface of the compacted mortar bed and the measuring means becomes too small.

When It is particularly advantageous if the distribution chamber even opposite the base frame is movably mounted. The peel edge can be in In this case, the mouth side Be the trailing edge of the distribution chamber, so that the entire distribution chamber across from the base frame is raised and lowered. The distribution chamber can be raised or lowered both on one side and on both sides, so the peel edge is not necessarily raised parallel to the surface must be, but also obliquely to the surface of the mortar bed can stand, if based on the working width only partially more or less mortar to disposal to be asked.

Of the representational Part of the object is solved by the features of claim 8.

Vorteihafte Further developments of the Fertigervorrichtungen are the subject of subsequent Dependent claims.

The inventive finishing apparatus comprises one opposite the base movable frame with a peel edge and one of the peel edge downstream compressor. It's one with provided the base frame coupled planning unit, the peel edge and downstream of the compressor, wherein the planning unit a rotationally and / or translationally moving ablation means for Having removed an upper layer of the leveled and compacted mortar, as well as a the Abtragmittel downstream Schableiste for removal of mortar residues from the leveled, compacted and removed mortar bed.

It Among other things, considered as an advantageous development, if the checklist one of the surface of the mortar bed facing Schabkante has, in the vertex axis of a open against the direction of movement of the base frame Free angle runs. This clearance angle allows it that is in the surface texture Form grooves and grooves, their number and depth of the composition of the mortar dependent is. The tray bar does not have the function, the mortar bed to smooth in the sense that the surface as smooth as possible and fine pored, but has primarily the task of the ablation agent remove originating material residues. At the same time, the surface can in a certain way Circumference to be raised to prevent the penetration of the subsequently applied bonding slurry to optimize.

In Combination with a rotating ablation agent can be the pen list have a the Abtragmittel facing ramp section, the partial under the rotating ablation means summarizes. The thereby pent up and scraped mortar can over a recycling unit be transferred again in front of the peeling edge, this means especially in the distribution chamber, at the mouth of the Abziehkante may be formed. This creates in a certain way Scope a closed system, with the appropriate Einstellugnen completely can work without manual intervention. The operator only has a monitoring function, because both the leveling and the mortar feed completely automatically he follows.

In particular, the removal means has an axis of rotation which runs transversely to the direction of movement of the finishing device. In particular, the axis of rotation is perpendicular to the direction of movement of the finishing device. However, the ablation means can also be a scraping scraper, which revolves around the upper layer of the mortar bed and is similar to a conveyor belt or scraping and feeding the removed mortar to a recycling unit. The return unit is in particular a tube screw.

The Abtragmittel is preferably a Schneckenfräse. The auger points in particular two lengths with opposite slope on, leaving the worn mortar between the lengths merged and taken there by the tube screw of the feedback unit becomes.

It is within the scope of the invention also conceivable that the ablation is a translatory oscillating removal strip. Such Removal strip may be arranged in particular V-shaped, so that the removed material about in the middle of the finishing device by the forward movement the finishing device is pushed together where it is from the return unit picked up and transported again in front of the peeling edge.

The Base frame is over at least two individually driven wheels moved. The tread of the Wheels can be gummed to a certain delay in overcoming to achieve bumps in the lane, leaving the control loop can react better. This can improve the reaction accuracy become. Furthermore, an elastic ground contact, as well as a large selected wheel diameter, minor bumps basically better balance. The finishing device is preferably self-propelled. Basically But it does not exclude the device to a base frame to couple to a tractor.

With the above-described method or the above-described finishing device will be significant quality improvements in creating a low shrinkage, homogeneously compacted and uniform dimensionally stable mortar bed from earth-moist mortars achieved, as they e.g. in tile, plate and mosaic crafting when creating vibrating trays in the fresh-in-fresh process come to execution. A mortar bed is due to its cheaper water / cement value and the optimized post-treatment by short-term occupancy with Tiles or plates shrink as cement screeds and should be as possible high dimensional stability own, so when knocking or shaking the topping this not in the mortar bed dips. The procedure allows an introduction of the mortar bedding with tolerances that increased Requirements according to DIN-EN 18202, Table 3, line 4 clearly falls short and puts it sure that when shaking the floor coverings hardly any changes in the level arise. Achieve the well-known, hand-crafted ways of working only insufficient compaction and dimensional stability of the mortar bedding. These Disadvantages are in the inventive method in an advantageous Completely overcome.

The The invention will be described below with reference to one of the schematic drawings illustrated embodiment explained. Show it:

1 in the side view of a finishing device for producing a soil-moist mortar bed

2 the finishing device of 1 in plan view and

3 the checklist of the finishing device of the 1 and 2 in detail.

With 1 is in the 1 and 2 a paver device 1 referred to, which is moved in the direction of the arrow F to create a soil-wet mortar bed. The paver device 1 is self-driving, with two of its wheels 2 . 3 via independent drive units 4 are driven. The wheels 2 . 3 are narrow metal discs of relatively large diameter, in a common lane 3 to run. The wheels 2 . 3 are on a frame-shaped base frame 5 attached. The wheels 2 . 3 are outside the working width of the paver 1 arranged so that the wheels 2 . 3 not by that of the paver 1 created mortar bed must drive. Between the wheels 2 . 3 is on the base frame a distribution chamber 6 arranged facing the base frame 5 is mounted adjustable in height. The height adjustment takes place via two drive units 7 , which are controlled independently of each other, so that the distribution chamber 6 opposite the base frame 5 can also be at an angle. This is important because in this embodiment a peel edge 8th at an estuary 9 the distribution chamber 6 is provided. The distribution chamber 6 is in the area of the estuary 9 to the underground 10 open. The peeling edge 8th in the area of the estuary 9 ensures that in the process of the finishing device 1 a pre-graded and compacted mortar bed is provided.

In the direction of travel behind the peel edge 8th there is a compressor 11 of which only the compressor plates resting on the pre-graded mortar bed are visible. The compressor 11 is opposite the base frame 5 stored floating and can when empty runs the paver 1 be raised.

To the compressor 11 closes a planning unit 12 on, over an arm 13 pivotable relative to the base frame 4 is stored. The arm 13 is at point A on the base frame 5 hinged and is about a lifting device 14 raised, which is also attached to the base frame 5 is supported. The distance between the point A and the lifting device 14 is chosen as large as possible for reasons of control accuracy.

The height level of the planing unit 12 depends on a previously established optical reference plane 15 which is formed by a laser beam. On the optical reference plane 15 Reactive level sensor means 16 provide measurement data that is transmitted to a controller, not shown. The controller causes the lifting device 14 the planning unit 12 raises or lowers, leaving the planing unit 12 at the optical reference plane 15 is aligned.

Another important parameter of the mortar bed is the degree of compaction of the compacted mortar. To detect this indirectly is on the planning unit 12 a non-contact measuring device 17 , in particular an ultrasound head, arranged the distance between the measuring means 17 and the compacted mortar. If the distance is too small, it means that the mortar layer is thicker than it should be. That is, the peel edge 8th the distribution chamber 6 is too far away from the ground 10 , Accordingly, the drive unit needs 7 be controlled such that the distribution chamber 6 with the peel edge 8th is lowered slightly. The measuring equipment 17 are each arranged in the corner region of the compressor plates, ie in the vicinity of the drive units 7 for raising and lowering the distribution chamber 6 , In this way, the associated control loop can react very quickly.

Basically, this possesses of the compressor 11 compacted mortar bed is required a greater thickness than ultimately. The reason for this is that the downstream ablation agents 19 the planning unit 12 remove an upper layer of the compacted mortar bed. It will be removed about 1 to 2 cm. However, if the mortar layer to be removed is very thick, a recycling unit provided for returning the removed mortar must be used 18 carry more mortar than required. Should the ablation agent 19 or the recirculating agent 18 in its capacity reach the limits, would have the feed rate of the finisher device 1 be reduced. This would lead to an undesirable reduction in area performance. That's why the measuring equipment plays 17 for detecting the distance to the compacted mortar bed a large role, with the help of the peel edge 8th can be adjusted to the desired height level in order to provide an optimum thickness of the mortar layer to be compacted with the aim of not too large, but not too small, the amount of mortar to be recycled.

In this embodiment, the ablation means 19 the planning unit 12 a rotary unit designed as a helical milling machine, which has two longitudinal sections with opposite pitch. The slope is chosen so that the removed mortar the center of the finishing device 1 arranged return unit 18 is supplied. The feedback unit 18 is one to one with the planning unit 12 coupled pipe worm, which together with the planing unit 12 is raised or lowered. The feedback unit 18 is via an independent drive unit 27 driven. Mortar is inside the recycling unit 18 moved diagonally upwards and slips over an outlet 20 from above back into the distribution chamber 6 , In the upper area of the distribution chamber 6 is a connection pipe 21 to recognize, at a non-illustrated supply hose can be connected to mortar in the distribution chamber 6 to pump. In a manner not shown is located in the distribution chamber 6 a distributor. This is especially an opposite snail, which on the one hand on the spout 20 and on the other hand via the connecting pipe 21 supplied mortar across the entire width of the distribution chamber 6 equally distributed. In addition, at the in the distribution chamber 6 protruding end of the connecting pipe 21 coupled to a manually pivotable section, which allows an operator to mortar targeted in the distribution chamber 6 if there is an uneven distribution or there is a risk that in a partial area of the peel edge 8th not enough mortar is available. It must be ensured in principle that sufficient mortar within the distribution chamber 6 is present, since without this a perfect mortar bed can not be created. An operator can use the paver device 1 in terms of the travel speed directly on the finishing device 1 or via a wireless or wired remote control. If there is too little mortar in the distribution chamber 6 , the feed rate is deliberately reduced or the finishing device 1 even stopped, until again sufficient mortar in the distribution chamber 6 is available. In likewise not shown manner are in the distribution chamber 6 also means which detect a permissible maximum level of the mortar to another supply via the connecting pipe 21 to interrupt. When the mortar level drops, a signal is sent through this device that sets the distribution means in motion, and that more mortar over the connecting pipe 21 can be supplied.

An essential part of the inventive finishing device is a batten strip 22 that are still behind the ablation agent 19 is arranged. The ski bar 22 ( 3 ) has one of the Oberflä surface of the mortar bed facing scraping edge 23 in the vertex axis of a clearance angle opening against the direction of movement 24 runs. The shape of the clearance angle 24 plays a minor role. It is essential that behind the scraping edge 23 a free space is present, so that a scratching effect arises, which leads to the surface of the finished mortar bed has a certain roughening, ie the pores of the mortar bed should not be closed if possible, but to some extent open so that a contact sludge can penetrate well. This effect is caused by the scraping edge 23 with subsequent clearance angle 24 reached. By an adjustable clearance angle 24 The surface texture can be influenced from rough to smooth.

Out 3 Furthermore, it can be seen that the piste 22 a rotating ablation agent 19 facing ramp section 25 so that removed mortar in the gap 26 is pushed on and off the rotating ablation agent 19 towards the recycling unit 18 can be transported. In 1 is recognizable that the ablation agent 19 a separate drive unit 28 assigned.

1

pavers device

2

wheel

3

wheel

4

drive unit

5

base frame

6

distribution chamber

7

drive unit

8th

pull-off

9

muzzle

10

underground

11

compressor

12

grading purity

13

poor

14

hoist

15

optical reference plane

16

Level sensor means

17

measuring Equipment

18

Return unit

19

etchant

20

outlet

21

connecting pipe

22

scraper

23

scraping edge

24

clearance angle

25

ramp section

26

gap

27

drive unit

28

drive unit

A

articulation

F

direction of travel

Claims (28)

Method for producing a soil-moist mortar bed for the laying of tiles or plates, by means of a finishing device ( 1 ), comprising the following steps: a) providing a finishing device ( 1 ); b) moving the finishing device ( 1 ) in a predetermined direction, so that the mortar by means of a Abziehkante ( 8th ) of the finishing device ( 1 ) is first leveled; c) compacting the leveled mortar by a compactor ( 11 ) of the finishing device ( 1 ); d) removal of an upper layer of the leveled and compacted mortar by a rotationally and / or translationally moving removal agent ( 19 ) of the finishing device ( 1 ); e) removal of mortar residues from the leveled, compacted and removed mortar with a removal agent ( 19 ) downstream list ( 22 ) of the finishing device ( 1 ). A method according to claim 1, characterized in that the mortar from a distribution chamber ( 6 ) of the finishing device ( 1 ) on a substrate ( 10 ) is applied. A method according to claim 2, characterized in that the removed, upper layer and the mortar residues by a recycling unit ( 18 ) of the finishing device ( 1 ) in front of the peeling edge ( 8th ) to be led back. A method according to claim 2 or 3, characterized in that the mortar in the distribution chamber ( 6 ) through in the distribution chamber ( 6 ) Distributed distribution means is evenly distributed. Method according to one of claims 1 to 4, characterized in that a planning unit ( 12 ) of the finishing device ( 1 ) with the ablation agent ( 19 ) and the ski bar ( 22 ) are aligned via level sensor means on an optical reference plane and pivoting relative to the base frame ( 5 ) of the finishing device ( 1 ) by a lifting device ( 14 ) in one of the optical reference planes ( 15 ) are held corresponding desired position. Method according to one of claims 1 to 5, characterized in that between the compressor ( 11 ) and the ablation agent ( 19 ) Measuring means ( 17 ), which measure the height of the compacted mortar, the measured value being used as a parameter for adjusting the height of the peeling edge (FIG. 8th ) serves. Method according to one of claims 1 to 6, characterized in that the relative position of the distribution chamber ( 6 ) relative to the base frame ( 5 ) is adjusted depending on the height of the compacted mortar. Finishing device for producing a soil-moist mortar bed for the laying of tiles or slabs, with a) one opposite the substrate ( 10 ) movable base frame ( 5 ); b) one on the base frame ( 5 ) arranged Abziehkante ( 8th ); c) one with the base frame ( 5 ) and the peeling edge ( 8th ) downstream compressor ( 11 ); d) one with the base frame ( 5 ) coupled planning unit ( 12 ), the peel edge ( 8th ) and the compressor ( 11 ) is connected downstream; e) the planning unit ( 12 ) a rotationally and / or translationally moving ablation agent ( 19 ) for removing an upper layer of the leveled and compacted mortar; f) wherein the planning unit ( 12 ) a the Abtragmittel ( 19 ) downstream checklist ( 22 ) for removing mortar remnants from the planed, compacted and removed mortar bed. Finishing device according to claim 8, characterized in that on the base frame ( 5 ) a distribution chamber ( 6 ) for applying the mortar to a substrate ( 10 ) is arranged. Finishing device according to claim 9, characterized in that in the distribution chamber ( 10 ) a distribution means for evenly distributing the mortar is arranged. Finishing device according to claim 9 or 10, characterized in that the peeling edge ( 8th ) from one of the underground ( 10 ) facing mouth ( 9 ) of the distribution chamber ( 6 ) is formed. Finishing device according to one of claims 9 to 11, characterized in that the distribution chamber ( 6 ) relative to the base frame ( 5 ) is movably mounted, wherein the relative position of the distribution chamber ( 6 ) relative to the base frame ( 5 ) is adjustable depending on the height of the compacted mortar. Finishing device according to claim 12, characterized in that between the compressor ( 11 ) and the ablation agent ( 19 ) Measuring means ( 17 ), which measure the height of the compacted mortar, the measured value being used as a parameter for adjusting the height of the peeling edge (FIG. 8th ) serves. Finishing device according to one of claims 8 to 13, characterized in that the piste ( 22 ) one of the surface of the mortar bed facing scraping edge ( 23 ), which in the vertex axis of a against the direction of movement of the base frame ( 5 ) opening clearance angle ( 24 ) runs. Finishing device according to one of Claims 8 to 14, characterized in that the bale strip ( 22 ) a the Abtragmittel ( 19 ) facing ramp section ( 25 ) having. Finishing device according to one of claims 8 to 15, characterized in that a recycling unit ( 18 ) is provided for transferring the removed upper layer and the mortar residues in front of the Abziehkante ( 8th ). Finishing device according to one of claims 8 to 16, characterized in that the ablation means ( 19 ) has an axis of rotation which is transverse to the direction of movement (F) of the finishing device ( 1 ) runs. Finishing device according to one of claims 8 to 16, characterized in that the removal means has an axis of rotation parallel to the direction of movement (F) of the finishing device ( 1 ) runs. Finishing device according to one of claims 8 to 17, characterized in that the ablation means a translational is oscillating removal strip. Finishing device according to one of claims 8 to 19, characterized in that the return means ( 18 ) is a pipe screw. Finishing device according to one of claims 8 to 20, characterized in that the ablation means ( 19 ) is a Schneckenfräse. Finishing device according to claim 18, characterized in that the abrading means ( 19 ) has two longitudinal sections with opposite slope. Finishing device according to one of claims 8 to 22, characterized in that the planning unit ( 12 ) on an optical reference plane ( 15 ) level sensor means ( 16 ), wherein the planning unit ( 12 ) via a lifting device ( 14 ) in the optical reference plane ( 15 ) corresponding desired position is maintained. Finishing device according to one of claims 8 to 23, characterized in that on the base frame ( 5 ) at least two individually driven wheels ( 2 . 3 ) are arranged. Finishing device according to claim 24, characterized in that the running surface of the wheels ( 2 . 3 ) is elastic. Finishing device according to claim 24 or 25, characterized in that the wheels ( 25 ) laterally of the distribution chamber ( 6 ) are arranged. Finishing device according to one of claims 8 to 26, characterized in that it is self-propelled. Finishing device according to one of claims 8 to 27, characterized in that the base frame ( 5 ) can be coupled to a tractor.