EP2428614B1 - Moveable finisher - Google Patents

Description

The invention relates to a mobile paver for the installation of existing ground cover material plastic coverings, elastic support layers or floor screed, wherein the paver has a screed for the removal of the soil material and the screed is adjustable in its vertical position by a height adjustment and the paver a push button with a Tastfuß has, which scans the ground level next to the paver and the sensing unit acts on the height adjustment of the position of the screed so that a ground-level connection of the ground cover material is carried to the ground level. The button unit comprises one of a probe carrier held Tastfuß and the probe carrier is hinged to a support joint. A held by a switch carrier sensor or switching unit is provided and the switch carrier is articulated to the probe carrier, wherein the probe carrier cooperates with the sensor or switching unit according to the position of the probe carrier and / or the position of the joint on the probe carrier.

Built-in pavers described in the beginning are well known in the art. They are used, for example, plastic sports pads on playgrounds, small pitches, athletics or school sports facilities, etc. to install. The procedure is such that a plurality of successively arranged flooring strips are installed side by side and of course a seamless connection of the individual strips together is desired. In addition to a seamless abutment of course, a ground-level (ie paragraphless) connection of the individual strips of importance. Since, in principle, it can not be ensured that the subfloor is prepared accordingly exactly, the generic paver must have appropriate equipment.

The known paver pavers are equipped with screeds, which usually oscillate at right angles to the direction of travel of the paver and thus compact the ground cover material on the subfloor, but also smooth. At least the oscillation movement of the screed covers the chassis width in order to achieve a seamless connection of the individual flooring strips to each other.

The known installation pavers serve to install plastic coverings, elastic base courses or floor screeds, etc. These floor coverings are usually made at least during processing pourable ground cover material. Under ground cover material in the sense of this application is therefore that pourable and also understood granular material, which then forms the base layer in the installed state. For the connection of the granular material, the most diverse chemical or physical mechanisms are known; This can be done, for example, by adding a binder or adhesive or else by thermal activation, etc. The term ground cover material is not limited to a specific embodiment of the material, it may consist of plastic or mineral raw materials, etc., the invention is not limited here.

In order to achieve a ground-level connection of the individual floor strips to one another, it is known in the prior art to use a button unit which cooperates in a suitable manner with the height adjustment device which is responsible for the vertical position of the screed. The height adjustment device also has the fundamental task of defining the layer thickness of the ground cover material to be incorporated. If this results in a corresponding inaccuracy in the substructure, this must be corrected in the base course and optionally by raising or lowering the screed, which then changes the correspondingly resulting layer thickness of the ground cover material.

It is also equivalent for the invention insofar as a defined, constant height jump (for example of a few millimeters or centimeters) should be realized, which is possible by a corresponding offset of the offset in the arrangement of the proposal according to the invention. In this respect, the ground-level connection is also equivalent to transferable to this application.

Contactlessly operating key units are known in the prior art, which determine the distance of the ground level next to the paver from the fixed pressure foot and act accordingly on the height adjustment device. Of course it depends on that Floor level of the already installed in the previous step plaque strip or a corresponding boundary level (for example, curb, etc.). However, these methods are not sufficiently accurate.

The document US 5,702,201 discloses a method for compensating for differential compaction in an asphalt pavement mat using a nominal reference.

The document US 3,564,986 discloses a paving machine with a paving control system having individually operable lever arms controlled by electrical control means and sensing deviations of road grade from predefined levels.

It is an object of the invention to provide a paver, the work result is much more accurate than that of the known, especially in relation to the ground-level installation of the individual flooring strips.

To solve this problem, the invention is based on a paver as described above. As already mentioned, it is provided that the button unit comprises a pressure foot held by a probe carrier, the probe carrier is articulated to a support joint and a sensor or switch unit held by a switch carrier is provided and the switch carrier is articulated to the probe carrier at a hinge is. The probe carrier acts together with the sensor or switching unit according to the position of the probe carrier and / or the position of the joint on the probe carrier.

According to the invention it is provided that the switch carrier has on both sides of the joint extending switch carrier sections. These switch carrier sections can be the same or have unequal lever lengths. As a result of this embodiment of the switch carrier, the switching sensitivity or sensing capability is further improved, since the response of the overall device can be further refined on account of the adjustable lever lengths. This results in an improvement of the switch operability.

It proves to be favorable if the feeler carrier is variable in length, in particular telescopic, designed, since this can be done tunable to the desired positioning accuracy adjustment. This positioning accuracy depends on the one hand according to the specifications for the installation, on the other hand also after the design of the material to be installed or the installation environment.

Also, the probe carrier may comprise in a preferred embodiment of the invention, on both sides of the joint extending portions, wherein a portion is provided which extends from the joint to the support joint. It is considered advantageous if this portion is shorter than the portion extending from the joint in the direction of the Tastschenkels. The sections may have an aspect ratio of 1: 1 to 1: 4, in particular from 1: 1 to 1: 3, preferably from 1: 1 to 1: 4.

Overall, the lowering movement of the pressure foot leads to a lowering pivoting movement of the feeler carrier about the rotary joint. Due to the joint, which is arranged on the probe carrier, and the switch carrier moves in the same way. It is favorable that the pressure foot and also the leveling stop are based on the joint of the same side. This results in a rectified moment, which leads to a corresponding counter-torque in the region of the switching arrangement and the pin, which is provided in the switching arrangement, with greater force on the carrier contact surface suppressed. The rectified moment can be influenced by correspondingly advantageous adjustment of the respective carrier section lengths. Depending on the selected section length, the leverage and above the switch hysteresis can be influenced. This results in an improved response or adjustability for this purpose.

The above-mentioned length ratios refer to the relationships of the individual sections of the respective carriers to one another, but equally also to the relationships of the switch carrier sections and the Tastträgerteilstücke each other. The above-mentioned aspect ratios represent only corner points, of course, here all intervening length ratios can also be set. Also, the aspect ratios of the switch carrier sections may differ from those of the Tastträgerteilstücke to each other. Overall, a significantly improved adjustability and thus Sensiergenauigkeit the entire device is achieved.

The proposals of the prior art are characterized by a pressure foot, which is rigid with respect to its position on the paver and has a sensor unit which measures the distance of the rigidly mounted Tastfusses to the ground level.

According to the proposal of the invention, the pressure foot is now arranged on a pivotable probe carrier which is articulated on a hinge, whereby the Tastfuß is basically against the ground level adjustable or set up on this. This ensures that a corresponding unevenness in lying next to the strips located in the installation floor level leads to a direct mechanical implementation of the probe carrier, which is received by a sensor and switching unit. The sensor or switching unit acts in a suitable manner on the height adjustment device and thus closes the control-regulating circuit. Another advantage of the invention lies in the fact that the entire key unit is arranged on the installation paver according to the invention and no additional elements or preparations on the ground or at the construction site, etc. are needed to paragraphless, at ground level (and seamless, but this does not characterize the invention but advantageously further develops) to realize abutting support layers.

In a preferred embodiment of the invention, it is provided that the vertical position of the sensor or switching unit is variable, in particular variable by the height adjustment device. Such an embodiment ensures that a corresponding vertical adjustments of the position of the screed is also transmitted simultaneously to the position of the sensor and switching unit and thus the reference line of the sensor and switching unit is the same even with a changed position of the reference surface (the ground level). Alternatively, it is of course possible to firmly form the position of the sensor or switching unit on the mounting paver according to the invention.

In a preferred embodiment of the invention it is proposed that the sensor or switching unit is held by a switch carrier, which is articulated to the probe carrier at a joint.

Since the probe carrier scans the raising or lowering movement of the pressure foot due to the changing ground level, this height information is transmitted to the sensor or switching unit via this arrangement. In addition, however, also affects the adjustment of the height adjustment device on the switch carrier or the vertical position of the sensor or switching unit. It should be noted in this context that the term vertically describes here any movement or direction which describes at least a portion in the vertical direction, optionally also obliquely to the vertical.

In a preferred embodiment of the invention, it is provided that the joint is located on the probe carrier between the pressure foot and the support joint. Usually, the joint between the wearer's joint and the pressure foot is arranged fairly centrally or centrally. However, the resulting section lengths can also be different or significantly different (for example greater than the ratio 1.5: 1 or 2: 1). In this case, both the section from the touch foot to the joint, as well as the section from the joint to the support joint be greater or smaller than the other section.

According to the invention it is provided that the vertical position of the support joint is variable, by the height adjustment device is variable, wherein the height adjustment device raises or lowers the support joint in the same way as the screed. The position of the support joint ultimately determines the inclination angle of the probe carrier and thus also the control of the sensor or switching unit. A similar movement in the vertical direction (the vertical direction may of course also be an obliquely upward movement according to the invention) results in the reference layer also adapting dynamically to the desired layer thickness of the ground cover material to be applied or to the variable position of the floor level. In this case, the screed and the support joint are cleverly arranged on a common connection carrier and thus rigidly coupled together.

According to the invention, a leveling stop is provided on the sensor or switching unit or the switch carrier. By the leveling stop is a movement, in particular a rotation of the Sensor or switching unit reached around the joint. In the arrangement or design of the leveling stop the invention is designed very flexible. It is possible that this leveling stop is realized both in the independently mounted sensor or switching unit, as well as in the solution in which the sensor or switching unit is arranged on the switch carrier.

Furthermore, the invention comprises a variable by the height adjustment device in its vertical position, cooperating with the leveling abutment element. Cleverly, this contact element is changed in the same way as the screed or the support joint in its vertical position. For this purpose, for example, the contact element is connected to a common carrier with at least the screed and / or the support joint or is raised or lowered in the same manner by the height adjustment device. That's it

Investment element, for example, as a stop or support ausbildbar. When interacting with the leveling stopper, it may be brought into operative position above, below or to the side of it.

The configuration of the switch carrier is similar to a rocker, such that the joint, on which the switch carrier is arranged on the probe carrier, is located between the leveling stop and the sensor or switching unit. This ensures that is rotated by an interaction of the leveling stop, for example, as proposed by the invention, with the contact element of the switch carrier about the axis of the joint and then the sensor or switching unit undergoes a corresponding change in position or moment or force.

According to the invention it is provided that the sensor or switching unit defines at least three positions and the sensor or Switching unit cooperates with a carrier contact surface of the Tastträgers such that the sensor or switching unit is able to take one of the three positions, namely raising or lowering the height adjustment device and a neutral position. This preferred embodiment of the sensor or switching unit can be realized in both variants provided according to the invention. The invention encompasses both a solution in which the sensor or switching unit is not supported by the probe carrier, but cooperates with this, as well as the variant in which the sensor or switching unit as described connected via the switch carrier and the hinge to the probe carrier or is involved. By appropriate triggering of the sensor or switching unit in cooperation with a carrier contact surface of the Tastträgers the sensor or switching unit takes one of the three positions and controls mutatis mutandis the height adjustment, which in turn raises the screed and the other associated elements or lowered or in their position not changed.

In a preferred embodiment of the invention it is provided that the sensor or switching unit is designed as a switching arrangement and a pin of this switching arrangement cooperates against the force of a spring with the carrier contact surface and occupies one of the at least three positions.

It has been found that it is advantageous that the screed can be heated. In particular, the floor covering material facing the bottom cover material can be heated on the screed. This energy is useful, for example, for densification or solidification or for increasing the lubricity of the binder of the ground cover material.

The proposal according to the invention is very variable in terms of the design of the pressure foot realized. So will be in one first variant proposed a relatively short pressure foot whose length is in particular less than 10% of the length of the installation tiger. Of course, with a relatively short touch foot, a very quick response of the height adjustment device (occurrence of corresponding floor level variations) is detected. With a slightly longer feeler foot, the reaction rate is reduced in this regard, which is why in an alternative embodiment of the invention, a long pressure foot is provided, the length of which is greater than 80% of the length of the finishing tiger. In specially designed situations, it may be particularly advantageous that the long pressure foot is preferably greater than 80% of the length of the installation tiger.

The pressure foot is connected via a Tastschenkel with the probe carrier. In a preferred variant of the invention, the pressure foot is mounted in a bearing point on the Tastschenkel, in particular, the bearing point along at least a portion of the longitudinal extent of the pressure foot is variable. Such a configuration is realized, for example, by a rod-like pressure foot, which has a slot or gap on its upper side and a certain area of the pressure foot behind the bearing point and also behind the paving machine is towed (= tow bar), in which case the bearing point defines the end of the longitudinal slot. Of course, the bearing point in such a configuration by appropriate clamping devices along the longitudinal extension of the pressure foot arbitrarily adjustable.

The Tastschenkel extends substantially vertically and carries at its lower end the Tastfuß. The pressure foot scans the ground level next to the paver, for this purpose the probe leg is mounted or held in a substantially horizontally extending probe carrier. The effective length of this Tastträgers is variable such that it is telescopic, for example. Thereby, the distance is adjustable, in which the ground level is scanned next to the paver.

In a preferred embodiment of the invention, the height adjustment device has at least one guide, for example an adjusting spindle or the like, and a height adjustment drive, for example a rotary drive for the adjusting spindle (for example designed as an electric motor). It should be emphasized at this point that this is only a variant of the embodiment of the height adjustment device. There are actually a large number of equivalent variants.

In a preferred embodiment of the invention it is provided that the abutment element is arranged on the guide, wherein the abutment element in particular as on the adjusting spindle

arranged adjusting nut is formed. The adjusting spindle carries, for example by another nut the screed and / or the beam joint.

The embodiment of the invention is selected so that, depending on the switch position of the sensor or switching unit, a raising or lowering command to the height adjustment, in particular to the height adjustment.

In a preferred embodiment of the invention, it is provided that the length of the switch carrier piece between the joint and the leveling stop is smaller than the length of the switch carrier piece between the joint and the sensor or switching unit. In particular, it is provided that the length of the switch carrier piece between the joint and the leveling stop is less than half, in particular less than 1/3 of the length of the switch carrier piece between the joint and the sensor or switching unit. By this different length lever is by a small effect achieved a large effect, that is, by a small path change on the one hand, a large path change on the other side is effected. As a result, the sensitivity of the entire button unit is adjustable.

In principle, the proposal according to the invention can be realized both with a contactless as well as a touching scanning of the ground level by the feeler foot. In a contactless scanning of the ground level by the pressure foot a special drive for the position of the pressure foot is provided and provided thereby sensor arrangement only causes the distance of the pressure foot above the floor level remains the same. Thus, for example, a mechanical impairment of the soil level can be avoided by the pressure foot. The correction of the position of the pressure foot relative to the ground level, for example, due to corresponding unevenness of the ground level, then lead
to a corresponding change in position of the pressure foot itself and this also to a corresponding rash of the Tägerägers, which carries the Tastfuß and its support joint.

Alternatively, the touching scanning of the ground level is provided by the pressure foot, which dispenses with the relatively complicated sensor structure.

In a preferred embodiment of the invention it is provided that the paver paver is designed as a self-propelled device, that is to say with its own chassis and traction drive, or else as a towed vehicle. The self-propelled arrangement is to be preferred, since this is basically space-saving and leads to a more accurate work result, but the dragged configuration is also possible and provided according to the invention.

Fig. 1

in einer Seitenansicht den erfindungsgemäßen Einbaufertiger;

Fig. 2

in einer Frontansicht den erfindungsgemäßen Einbaufertiger;

Fig. 3

in einer Schnittdarstellung kombiniert zwei verschiedene Stellungen der Tasteinheit gemäß der Erfindung;

Fig. 4, 5

in einem vergrößerten Detail die Tasteinheit gemäß der Erfindung;

Fig. 6

eine Seitenansicht in Richtung Pfeiles VI in Fig. 4.

In the drawing, the invention is shown schematically in particular in one embodiment. Show it:

Fig. 1

in a side view of the installation paver according to the invention;

Fig. 2

in a front view of the installation paver according to the invention;

Fig. 3

in a sectional view combines two different positions of the button unit according to the invention;

Fig. 4, 5

in an enlarged detail, the key unit according to the invention;

Fig. 6

a side view in the direction of arrow VI in Fig. 4 ,

In the figures, the same or corresponding elements are denoted by the same reference numerals and therefore, if not appropriate, will not be described again.

The installation paver 1 according to the invention is in Fig. 1 shown. The paver 1 has a caterpillar drive 11, by which it is possible that the paver can work reliably even on poorly fixed ground. The preferred direction of travel of the installation tiller 1, in particular its direction of installation, is directed to the left and identified by the arrow 10. In the direction of travel 10 at the rear end is the key unit 4, of which the feeler 40 is clearly visible.

Also in the direction of travel 10 in the rear area is the driver's seat 12, the rear arrangement of the seat 12 allows an immediate control of the work result, as well as the screed 2 in the rear of the prefabricated tiger 1 (based on its direction of travel 10) is located. In the in Fig. 1 shown side view, the screed 2 is substantially behind the Tastfuß 40 and is covered by this.

In Fig. 2 the paver paver 1 is shown in front view. The direction of travel 10 is in this case to the viewer. The screed 2 extends transversely, in particular at right angles to the direction of travel 10 and is arranged in the lower region of the paver 1. With 11a and 11b, the two caterpillars of the caterpillar drive 11 are marked, which extend on the left and right on the paver 1.

A detailed overview of the installation paver 1 according to the invention results in particular from the illustration according to FIG Fig. 3 , The Fig. 3 shows a partial section through the paver 1 in height of the height adjustment device 3, wherein the representation is divided, left and right different positions of the Tastträgers 41 are shown.

In Fig. 3 In particular, the key unit 4 is clearly visible. The button unit 4 is connected via the support joint 42 with the frame 13 of the installation tiller. In particular, the support joint 42 is mounted vertically displaceable in the frame 13, the vertical position of the support joint 42 is adjusted by the height adjustment device 3.

The button unit 4 comprises a pressure foot 40, which rests on the ground level 14 laterally next to the paver paver 1. Usually, the button unit 4 is mounted on the side of the built-in paver on which a strip of ground cover material has just been installed on the respective surface and to which a ground-level connection of the now just to be installed Bodendeckmaterial strip takes place. The position of the support joint 42 is approximately 1/3 of the total width of the prefabricator, resulting in a corresponding lever length of the feeler 41 results. In this case, the probe carrier 41 is telescopically extendable by a retractable tube 41 'is provided, which is inserted into the probe carrier 41.

The Tastfuß 40 is located on the Tastschenkel 43, the Tastschenkel 43 includes substantially at an angle, in particular at right angles to the end of the Tastträgers 41 or, as shown here, at the telescoping tube 41 'and extends downwards.

The sensor or switching unit 5 is supported by a switch carrier 50. The switch carrier 50 in turn is articulated via a hinge 51 with the probe carrier 41.

Fig. 4 and Fig. 5 show the specific embodiment of the sensor or switching unit 5 on a larger scale.

The height adjustment device 3 is characterized by a height adjustment drive 30, for example an electric motor, which is arranged in the upper region. The height adjustment device 3 further includes a guide or adjusting spindle 31, which is arranged oriented vertically to the paver paver 1. In the embodiment shown here, the height adjustment drive 30 sets the adjusting spindle 31 in rotation about its longitudinal axis. On the adjusting spindle 31 are one or more spindle nuts that change their axial position due to the rotation of the adjusting spindle 31. As a result, for example, a storage of the screed 2 and / or the support joint 42 can be realized, wordurch these elements are suitably height adjustable, in particular mounted vertically adjustable in height.

It is clear that for a reasonable synchronism, the arrangement is carried out on both sides, so on both the left and on the right side of the prefabricated turf 1 appropriate equipment is provided.

In the Fig. 4 . 5 Sensor or switching unit shown here is designed in particular as a switching arrangement 52. In this case, this switching arrangement has a pin 53 which protrudes from the bottom of the switching arrangement 52 and is axially movable. This pin 53 is supported by a spring of the switching arrangement 52 and cooperates with the carrier contact surface 44 of the Tastträgers 41. In the embodiment shown here, the carrier contact surface 44 is relatively close to the support joint 42. The invention includes, of course, also arrangements that implemented spatially reversed are.

The switching arrangement 52 is now chosen according to the embodiment shown here so that the switching arrangement 52 occupies at least three different positions. These three different positions are indicated by the axial position of the pin 53, which results from the interaction of the pin 53 with the carrier contact surface 44, against the force of the spring in the switching assembly 52.

The basic configuration of the switch carrier 50 is rocker-like, such that the switch carrier 50 extends on both sides of the joint 51. The right Schalterträgerteilstück 54 carries at its outer end, the switching assembly 52, the left Schalterträgerteilstück 55, which extends from the joint 51 to the left up to a leveling stop 56 arranged there, is significantly shorter. The operation of the leveling stop 56 results in particular Fig. 6 ,

The leveling stop 56 acts (directly or indirectly) together with the abutment element 32. The abutment element 32 is formed as a spindle nut and is located on the adjusting spindle 31. In this case, the abutment element 32 on a support plate 33 on which the leveling abutment 56 is able to lie over a large area. By an axial adjustment of the support element 32 on the adjusting spindle 31 (for example, by a corresponding rotation thereof), the support plate 33 and the support member 32 acts on the leveling abutment 56. The leveling 56 is the end portion of the pivotally held on the hinge 51, the adjusting spindle 31st As a result, the position of the switching arrangement 52 relative to the probe carrier 41 can be influenced.

According to the invention, the sensor or switching unit 5, in particular the switching arrangement 52 defines at least three positions and the sensor or switching unit 5 of a carrier contact surface 44 of the feeler carrier 41 cooperates such that the sensor or switching unit 5, in particular the switching arrangement 52 one of three positions, raising or lowering the height adjustment or neutral occupies.

The neutral position is indicated by the fact that the touchpad 40 rests on the ground level 14, the leveling abutment 56 bears against the contact element 32 and the pin 53 rests on the carrier contact surface 44 and the switching arrangement 52 is in a first depressed position, this first switch position no signal for the height adjustment device 3 or their height adjustment 30 gives off.

In the right representation of Fig. 3 the situation is shown in which the pressure foot 40 is raised, for example, by a bump and so the switching assembly 52 lifts from the carrier contact surface 44 and so the pin 53 against the force of the spring, not shown, enters a first signaling position. Consequently would be the arrangement for lifting the screed 2 and a corresponding command is sent from the sensor or switching unit 5 to the height adjustment device 3.

The lowering position is in particular by Fig. 5 clear. It is good to see that the axial position of the abutment element 32 on the adjusting spindle 31 is higher up than in Fig. 4 , The feeler 40 has in the position after Fig. 5 the desire to sink. This lowering movement of the feeler carrier 41 is limited by the leveling stop 56 or predetermined in their length. The chain of action is as shown below.

The lowering movement of the pressure foot 40 leads to a lowering pivot movement of the feeler carrier 41 about the pivot 42. Due to the joint 51, which on the Tastträger 41st

is arranged, the switch carrier 50 moves in the same way. It is favorable that the feeler foot 40 and also the leveling stop 56 is based on the joint 51 on the same side. This results in a rectified torque, which leads to a corresponding counter-torque in the region of the switching arrangement 52 and presses the pin 53 with greater force on the carrier contact surface 44.

It follows that the pin 53 is moved to the inner position, whereby the Absenksignal is triggered in the switching assembly 52. It then takes place a corresponding rotation of the adjusting spindle 31 by the Höhenverstellantrieb 30, the support member 32 moves vertically down until the feeler 40 rests on the ground level 14 and thus a certain relief in the lever assembly of the switch carrier 50 and probe carrier 41 results. From this, the force acting on the pin 53 force is reduced so much that it is no longer completely pressed into the switching assembly 52, but springs back to the middle, neutral position, whereby the height adjustment drive 30 is deactivated. The neutral position is reached.

Advantageous in this context are the unequal lever lengths of the two left and right of the hinge 51 extending switch carrier sections 54 and 55, as this further improves the response of the switching arrangement and the positioning accuracy is increased. With regard to the position of the joint 51 on the probe carrier 41 it should be noted that the length of the probe carrier 41 is variable (because telescopic). In the shortest variant of the feeler carrier 41, the hinge 51 is arranged centrally. Otherwise, however, the right portion of the Tastträgers 41, which extends from the joint 51 to the support joint 42, shorter than the portion of the Tastträgers 41 which extends from the hinge 51 to the outside, to the ends connected Tastschenkel 43. The aspect ratios can vary from about 1: 1 to 1: 2, 1: 3 or even 1: 4, which also results in a higher measurement or Sensiergenauigkeit due to the improved response is achieved. Due to the leverage effect and the switch hysteresis which can be influenced by this, an improvement in the measuring or sensing accuracy is also favorably influenced.

Claims (14)

1. Moveable finisher (1) for the installation of synthetic floor coverings, elastic support surfaces or floor screed consisting of floor covering material, wherein the finisher (1) has a screed (2) for stripping off the floor covering material, and the vertical length of the screed (2) can be adjusted by a height control device (3), and the finisher has a probing unit (4) with a probing foot (40) probing the floor level next to the finisher, and the probing unit (4) can act on the position of the screed (2) via the height control device (3) such that the floor covering material is flush with the floor level, and the probing unit (4) comprises a probing foot (40) held by a probe support (41), and the probe support (41) is held flexibly on a support joint (42), a sensor or switch unit (5) held by a switch support (50) is provided, and the switch support (50) is mounted flexibly on the probe support (41) on a joint (51), wherein the probe support (41) interacts with the sensor or switch unit (5) depending on the position of the probe support (41) and/or the position of the joint (51) on the probe support (41), characterized in that the switch support (50) has switch support sections (54) extending on both sides of the joint (51), and the vertical position of the support joint (42) is changeable by the height control device (3), wherein the height control device (3) can lift or lower the support joint (42) in the same way as the screed (2), wherein on the sensor or switch unit (5) or the switch support (50) a leveling stop (56) is provided and a contact element (32), the vertical position of which can be adjusted by the height control device (3) and which interacts with the leveling stop (56), is provided, and wherein the sensor or switch unit (5) defines at least three positions, and the sensor or switch unit (5) interacts with a support contact surface (44) of the probe support (41) such that the sensor or switch unit (5) can hold one of the three positions, lifting or lowering of the height control device (3) or neutral.
2. Finisher according to claim 1, characterized in that the two switch support sections (54) have identical or non-identical lever length.
3. Moveable finisher according to claim 1 or 2, characterized in that the probe support (41) is designed variably in length, in particular telescopically, wherein the probe support (41) has sections extending on either side of the joint (51), wherein a section is provided extending from the joint (51) to the support joint (42), wherein the section is shorter than the section extending from the joint (51) in the direction of the probe limb (43).
4. Finisher according to one of the claims 1 to 3, characterized in that the sections have a length ratio from 1:1 to 1:4, in particular from 1:1 to 1:3, preferably 1:1 to 1:4.
5. Finisher according to one of the preceding claims, characterized in that the vertical length of the sensor or switch unit (5) can be changed by the height control device (3), and/or the sensor or switch unit (5) is held by a switch support (50) mounted flexibly on the probe support (41) on a joint (51), wherein the joint (51) is located on the probe support (41) between the probe foot (40) and the support joint (42).
6. Finisher according to claim 1, characterized in that the joint (51) is located on the switch carrier (50) between the leveling stop (56) and the sensor or switch unit (5).
7. Finisher according to one of the preceding claims, characterized in that the sensor or switch unit (5) is configured as switching arrangement (52), and a pin (53) of the switching arrangement (52) interacts with the support contact surface (44) against the power of a spring and holds one of the at least three positions, wherein the neutral position is given in that the probe foot (40) rests on the floor level (14), the leveling stop (56) is in contact with the contact element (32), and the pin (53) rests on the support contact surface (44), and the switching arrangement (52) is in a first pressed position, and/or the position "lift" characterizes a lifting of the probe foot (40) and the resulting lifting of the pin (53) from the contact surface (44) and the thus defined relieving position of the switching arrangement (52), and/or the position "lower" is characterized by a lowering of the probe foot (40), for example because of an indentation in the floor level (14), what results in the leveling stop (56) pushing the contact element (32) and through the lever-like, flexible arrangement of the switch support (50) on the joint (51) the contact surface (44) pushing the pin (53) in a second, pressed position of the switching arrangement (52).
8. Finisher according to one of the preceding claims, characterized in that a bottom base facing the floor covering material of the screed (2) can be heated, wherein the probe foot (40) is mounted on a probe limb (43) in a bearing point.
9. Finisher according to one of the preceding claims, characterized in that the height control device (3) comprises at least one guide (31), for example an adjusting spindle (31) or the like, and a height control drive (30).
10. Finisher according to one of the preceding claims, characterized in that the contact element (32) is arranged on the guide (31), wherein the contact element (32) is designed as an adjusting nut arranged in particular on the adjusting spindle (30).
11. Finisher according to one of the preceding claims, characterized in that depending on the position of the switch of the sensor or switch unit (5), a lifting or lowering command to the height control device (3), in particular to the height control drive (30), can be given.
12. Finisher according to one of the preceding claims, characterized in that the length of the switch support section (55) between the joint (51) and the leveling stop (56) is less than the length of the switch support section (54) between the joint (51) and the sensor and switch unit (5).
13. Finisher according to one of the preceding claims, characterized in that probing of the floor level (14) by the probe foot (40) is touchless or touching.
14. Finisher according to one of the preceding claims, characterized in that the finisher (1) is designed as autonomous or towed finisher.

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