EP2499953B1 - Floor cleaning device for cleaning a floor - Google Patents

Description

The invention relates to a soil treatment device for cleaning a substrate and a soil cultivation machine comprising a corresponding soil treatment device.

The WO 1998/043527 discloses a soil tillage implement comprising a soil tillage implement. The soil treatment device comprises two disc brushes, which lie in the direction of travel lying side by side and are mutually drivable. Following the plate brushes, a suction strip is arranged, which is designed to absorb a water liquor located on the ground or a water film located on the ground. The tilling device has such a width that it protrudes slightly beyond the transverse extent of the two plate brushes, so that a surface swept over by the plate brushes is also swept by the suction strip.

The in the WO 1998/043527 The disclosed soil cultivating device is rotatable about a vertical axis of rotation so that the soil cultivating device is usable in a forward working direction of the cultivating machine as well as a backward culturing direction of the cultivating machine. During a rotation of the soil cultivation device about the vertical axis of rotation, both the trailing suction strip and the two plate brushes pivot about the vertical axis of rotation. Consequently, in order to reliably pick up a water liquor applied on the ground, the tillage equipment must rotate in the reverse working direction about the vertical axis of rotation, so that in a backward working direction of the tillage machine, the squeegee continues to track the two disc brushes so that the water liquor located on the ground is reliably sucked up by the squeegee can be.

The FR-A-2328439 discloses a soil treatment device for cleaning a substrate comprising a brush box, a first squeegee upstream of the brush box in the forward direction of operation, a second squeegee trailing forward of the brush box, and a processing body disposed between the first squeegee and the first squeegee second suction bar is arranged.

The US-A-4173056 and the DE-A-10221353 respectively disclose a soil treatment device for cleaning a substrate, comprising a brush box and a squeegee downstream of the brush box in the forward working direction, located between two maximum pivoting positions is pivotable parallel to the ground to the left and to the right.

Although such tillage machines together with the soil treatment device have basically proven to be very practical in practice, it is an object of the present invention to provide a still further improved soil treatment device.

The object is achieved according to the invention specified in claim 1. Advantageous embodiments of the invention are specified in the subclaims.

The present invention provides comparatively simple means previously considered impossible improvements.

The tilling device according to the invention is characterized in that the second squeegee is pivotable relative to the brush box between two Maximalverschwenkpositionen parallel to the ground to the left and / or right, wherein in the Maximalverschwenkpositionen the second squeegee to the left or to the right, the second squeegee with the first squeegee (10) is in contact at their respective end portions.

The second suction strip is pivotable relative to the brush box about a virtual vertical pivot axis, relative to the processing device. This virtual vertical pivot axis is not necessarily stationary relative to the brush box, but may be in dependence on the pivoting position of the second suction Change position.

The arrangement of the two suction strips ensures that the processing device reliably sucks the substrate both in a forward working direction and in an opposite backward working direction, so that a water film applied, for example, to the substrate is reliably sucked off by the tilling device both in the forward working direction and in the backward working direction. For this reliable extraction of the water film or a water fleet on the ground, the soil treatment device must not be pivoted by 180 ° with respect to a tillage machine, to which the tillage device is attached. Therefore, the soil treatment device according to the invention is easier to use in its application than known tillage equipment.

Furthermore, a left end portion of the second squeegee is in contact with a left end portion of the first squeegee when the second squeegee reaches its maximum pivotal position in a left turn of the tiller. On the other hand, a right end portion of the second squeegee is in contact with a right end portion of the first squeegee when the second squeegee is placed in its maximum pivoting position in a right turn.

By the contact of the respective end portions of the first squeegee and the second squeegee ensures that even in the Maximalverschwenkpositionen the second squeegee located on the ground water film is reliably sucked off without water on the ground remains. By the contact of the end portions of the second squeegee and the first squeegee, a water film located on the ground is enclosed by the two squeegees and thus can be reliably sucked either by the first squeegee or by the second squeegee.

The machining body device preferably comprises at least one machining body, preferably two machining bodies. These processing bodies may be, for example, roller brushes or preferably plate brushes. In the case of two disc brushes as a processing body device, a corresponding soil cultivation device has a very large overall transverse extent transverse to the direction of travel or transversely to the forward processing direction, so that a large work surface can be cleaned with one operation.

Preferably, the second squeegee is pivotable about a virtual vertical pivot axis in the brush box.

In this case, the virtual vertical pivot axis moves as a function of the pivoting and the Verschenkrichtung the second squeegee on a curved path that moves the virtual vertical pivot axis with a first component of movement opposite to the pivoting of the second suction and / or with a second movement component against the forward working direction.

In a left-hand movement or in a left-hand curve of the soil-cultivating device, the second squeegee pivots to the left. Moved to the left by this pivoting The virtual vertical pivot axis to the right and in addition in the forward direction opposite direction.

In a right-hand turn of the tillage implement, the second squeegee pivots to the right, thereby causing the virtual vertical pivot axis to move both to the left and counter to the forward direction of operation.

By a corresponding articulation of the second squeegee, the distance between the second squeegee and the brush body can be reduced, so that the entire tillage device is very agile. Because of this high maneuverability of the soil tilling device, even a small steering impulse in the tilling device leads to a relatively large pivoting of the second teat strip. In addition, it is ensured by the displacement or by the movement of the virtual vertical pivot axis that the second suction strip does not collide with the brush box at certain angular positions relative to the brush box. Thus, the brush box does not restrict the pivoting of the second squeegee.

Thus, the virtual vertical pivot axis moves on a corresponding curved path upon pivoting of the second squeegee, the second squeegee is preferably secured by means of two pivot arms to the brush box. In this case, the two pivot arms are attached to two spaced bearing points on the brush box. The two spaced bearing points are preferably arranged symmetrically about a central plane of symmetry of the brush box. This preferably cross the two pivot arms in plan view.

Figur 1:

eine Draufsicht auf eine erfindungsgemäße Bodenbearbeitungseinrichtung gemäß der ersten Ausführungsform, wobei die zweite Saugleiste gegenüber dem Bürstenkasten nicht verschwenkt ist;

Figur 2:

eine Draufsicht auf die in Figur 1 dargestellte Bodenbearbeitungseinrichtung, wobei die zweite Saugleiste gegenüber dem Bürstenkasten in Vorwärtsarbeitsrichtung maximal nach rechts verschwenkt ist;

Figur 3:

eine Draufsicht auf die in den Figuren 1 und 2 dargestellte Bodenbearbeitungseinrichtung, wobei die zweite Saugleiste in ihrer Maximalenverschwenkposition in einer Linksbewegung der Bodenbearbeitungsmaschine dargestellt ist;

Figur 4:

eine Draufsicht auf die Unterseite der Bodenbearbeitungsmaschine gemäß der ersten Ausführungsform der vorliegenden Erfindung;

Figur 5:

eine Draufsicht auf die Unterseite der in Figur 4 dargestellten Bodenbearbeitungseinrichtung, wobei sich die zweite Saugleiste in der Maximalverschwenkposition in einer Linksbewegung der Bodenbearbeitungseinrichtung befindet;

Figur 6:

eine isometrische Darstellung der Bodenbearbeitungsmaschine gemäß der ersten Ausführungsform der vorliegenden Erfindung;

Figur 7:

eine Draufsicht auf eine Bodenbearbeitungseinrichtung gemäß einer zweiten Ausführungsform der vorliegenden Erfindung; und

Figur 8:

eine Draufsicht auf die in Figur 7 dargestellte Bodenbearbeitungseinrichtung, wobei die zweite Saugleiste gegenüber dem Bürstenkasten in Vorwärtsarbeitsrichtung nach rechts verschwenkt ist.

The invention will be explained below with reference to two embodiments. In detail:

FIG. 1:

a plan view of a soil treatment device according to the invention according to the first embodiment, wherein the second squeegee is not pivoted relative to the brush box;

FIG. 2:

a top view of the in FIG. 1 shown soil treatment device, wherein the second squeegee is pivoted relative to the brush box in the forward working direction a maximum to the right;

FIG. 3:

a plan view of the in the FIGS. 1 and 2 shown soil treatment device, wherein the second squeegee is shown in its Maximalverschwenkposition in a left-hand movement of the tillage machine;

FIG. 4:

a plan view of the bottom of the soil cultivation machine according to the first embodiment of the present invention;

FIG. 5:

a top view of the bottom of in FIG. 4 shown soil treatment device, wherein the second squeegee in the Maximalverschwenkposition in a left-hand movement of the soil preparation device is;

FIG. 6:

an isometric view of the tillage machine according to the first embodiment of the present invention;

FIG. 7:

a plan view of a soil treatment device according to a second embodiment of the present invention; and

FIG. 8:

a top view of the in FIG. 7 shown soil treatment device, wherein the second squeegee is pivoted relative to the brush box in the forward direction of work to the right.

In the FIGS. 1 to 6 Fig. 10 is a tilling apparatus 100 according to the first embodiment of the present invention. The show FIGS. 1 to 3 a plan view of the top of the soil treatment device 100, where against the FIGS. 4 and 5 show a plan view of the bottom of the soil tillage implement 100. FIG. 6 shows an isometric view of the soil treatment device 100. In all figures, like reference numerals designate the same components or the same features, so that a repetitive description of assemblies or features is avoided.

The soil tillage implement 100 is in one of the FIGS. 1 to 8 operable by means of an arrow.

The soil tillage implement 100 includes a brush box 1, a first squeegee 10, a second squeegee 20 trailing the brush box in the forward direction A, and a processing body 30 in the form of two disc brushes 30a, 30b.

The brush box 1 has a central plane of symmetry M. The illustrated soil tillage implement 100 is movable and operable transversely of this mid-plane of symmetry M either in the forward working direction A or in an opposite reverse working direction.

From the FIGS. 4 and 5 it can be seen that the first squeegee 10 is integrated in the brush box 1. In this case, the first squeegee 10 is arranged in the front region of the brush box 1. The front portion of the brush box 1 is the part directed in the forward working direction A.

The plate brushes 30a and 30b are preferably driven in opposite directions. In this case, a drive device drives the plate brushes 30a, 30b in such a way that, in the forward working direction A, the plate brushes advance toward one another.

In the exemplary embodiment shown, the two circular disc brushes 30a, 30b are located exactly next to one another with respect to the mid-plane of symmetry M of the tilling device when traveling straight ahead at the same height. It is also possible, however, an arrangement in which the two plate brushes 30a, 30b in the longitudinal direction of the soil preparation device or in the direction of travel, at least slightly offset are arranged so that the overlapped by the plate brushes 30a, 30b overlap surfaces.

The second squeegee 20, which is arranged in the forward working direction A following the brush box 1, is connected to the brush box 1 by means of second pivot arms 25, 25 '. In this case, the swivel arm 25 is pivotally mounted brush box side in a bearing point 26; the swivel arm 25 'is pivotally mounted brush box side in a bearing point 26' in the brush box 1. Thus, the second squeegee 20 can be pivoted relative to the brush box 1. This ensures that the area of the substrate swept over by the processing body device 30, 30a, 30b is also swept by the second suction strip 20, even during cornering movements. Therefore, a liquid applied to the substrate, which is preferably applied in or at the area of the disc brushes 30a, 30b via a conduit not shown in detail, is sucked or sucked up by the second suction bar 20 in a forward working direction A of the tilling apparatus 100. The liquid applied to the substrate may be, for example, a cleaning liquid supplied to the disc brushes 30a, 30b. This cleaning liquid can be applied, for example, immediately before the plate brushes 30a, 30b in forward working direction A or directly onto the plate brushes 30a, 30b.

Both the first squeegee 10 and the second squeegee 20 are connected to a suction device 40. The suction device 40 is realized in the illustrated figures by means of a tube with a in the Figures not dargestellen suction device is connected or is verbinbar. By means of the suction device 40, a negative pressure is generated both in the first suction chamber 10 and in the second suction chamber 20.

From the FIGS. 4 and 5 It can be seen that the first suction strip 10 has a first suction opening 12 and the second suction strip 20 has a second suction opening 22. Here, a leading suction lip 14a and a trailing suction lip 14b protrude from the first suction opening 12. A leading suction lip 24a and a trailing suction lip 24b protrude from the second suction opening 22. The respective squeegee lips 14a, 14b; 24a, 24b can be brought into contact with the ground.

The leading in the forward direction A suction lip 14a of the first squeegee 10, for example, further protrude from the suction opening 12 than the trailing in the forward direction A suction lip 14b. This ensures that in the forward working direction A, the trailing suction lip 14b does not rest completely close to the ground. Therefore, in the forward working direction A, the water film on the ground is sucked off mainly by the trailing second squeegee 20. When the working direction is reversed, that is to say in a backward working direction, the leading suction lip 14a then folds over, so that the trailing suction lip 14b in the first suction strip 10 rests tightly on the ground, so that the water film located on the ground reliably also remains in the backward working direction first squeegee 10 can be sucked.

The same principle applies to the trailing second squeegee 20. In the trailing second squeegee 20, the leading squeegee 24a protruding from the second suction opening 22 can protrude less far from the suction opening 22 than the trailing squeegee 24b. This ensures that in forward working direction A a water film located on the ground is reliably conveyed into the second suction strip or into the second suction chamber 20 and is detected and wiped by the trailing suction lip 24b. Thus, a film of water is reliably absorbed by the second squeegee 20.

By an appropriate design of the leading squeegee 14a, 24a and the trailing squeegee 14b, 24b ensures that the soil treatment device according to the invention in both the forward working direction A and in the opposite backward working reliably a water film is sucked through the respective trailing squeegee 10, 20. In this case, in the forward working direction A, the second suction strip 20 is the trailing suction strip, whereas in a backward working direction, the first suction strip 10 is the trailing suction strip.

From the FIGS. 4 to 6 It can be seen that the first squeegee 10 has on its transverse sides 17, 17 'first edge openings, from which the leading and the trailing squeegee 14a, 14b protrude. In this case, the leading suction lip 14a and the trailing suction lip 14b in the peripheral end portions 10 'of the first squeegee 10 are in contact.

The second squeegee 20 has at its transverse sides 27, 27 'second edge openings, from which the leading and the trailing suction lip 24a, 24b protrude. The leading suction lip 24a and the trailing suction lip 24b are in the end portions 20 'of the second suction bar 20 in contact.

The bringing into contact of the leading suction lips 14a, 24a with the corresponding trailing suction lips 14b, 24b is achieved by a corresponding shaping of the suction strips 10, 20 in the edge regions. In the edge regions, the walls of the suction strips 10, 20 converge toward one another, so that the squeezing lips protruding from the edge openings are directed toward one another.

Thus, the edge regions of the suction lips form the end sections 10 ', 20' of the first suction strip 10 and the second suction strip 20.

In FIG. 1 is a usual straight ahead of the soil tillage implement 100 shown, in which on the trailing second squeegee 20 of the mentioned liquid film can be sucked or sucked. The second suction strip 20 in this case has a width which is preferably at least slightly wider than the maximum width of the processing body device 30 in the form of the two juxtaposed plate brushes 30a, 30b.

FIG. 2 shows the soil tillage implement 100 according to the first embodiment in a rightward movement. Upon a rightward movement of the soil tillage implement 100, the second squeegee 20 also pivots to the right.

In this case, the pivoting of the second suction bar 20 up to the in FIG. 2 shown Maximalverschwenkposition done. In this Maximalverschwenkposition the second squeegee 20 to the right, the second squeegee 20 is in its end portion 20 'with the first squeegee 10 in its end portion 10' in contact.

In the in FIG. 2 shown example, a pivoting of the second squeegee 20 relative to the brush box 1 of 45 ° is necessary so that the second squeegee with the first squeegee in their respective end portions 10 ', 20' come into contact. However, it is also possible that the first squeegee 10 come into contact with the second squeegee 20 at a different Verschwenkgrad the second squeegee 20 relative to the brush box 1.

The necessary pivoting is dependent on the width and on the geometry of the second squeegee. Thus, with a narrower second squeegee 20, a pivoting of more than 45 ° may be necessary so that the second squeegee 20 comes into contact with the first squeegee 10. On the other hand, with a wider configuration of the second squeegee 20, pivoting by less than 45 ° may already lead to contact of the second squeegee with the first squeegee 10. Possible pivoting ranges of the second squeegee 20 relative to the brush box 1 are in the range from 20 ° to 60 °, preferably 25 °, 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, 65 °, 70 ° (to the left and to the right in forward direction A).

While FIG. 2 the soil tillage device according to first embodiment in a right-hand curve or in a right-hand movement, represents FIG. 3 The left-hand movement of the soil treatment device 100 also pivots the second squeegee 20 to the left so that the second squeegee 20 is in its end section 20 'in contact with the first squeegee 10 in its end section 10'.

From the FIGS. 1 to 3 it can be seen that the second squeegee 20 by means of the two pivot arms 25, 25 'is attached to the brush box 1. In this case, the two pivot arms 25, 25 'are attached to the brush box 1 at two spaced bearing points 26, 26', which are arranged symmetrically about the central plane of symmetry M of the brush box 1. In addition, the two pivot arms 25, 25 'intersect in plan view. A corresponding attachment of the second suction strip 20 to the brush box 1 has the result that the second suction strip 20 is pivotable about a virtual vertical pivot axis in the brush box 1. In this case, the virtual vertical pivot axis moves in dependence on the pivoting and the pivoting direction of the second suction strip 20 on a curved path 21 (FIG. FIG. 3 ). The virtual vertical pivot axis moves on the cam track 21 such that it moves with a first movement component counter to the passing direction of the second suction strip 20 and with a second movement component counter to the forward movement direction A.

In the in FIG. 3 shown example of a left-hand movement of the soil treatment device 100 pivots the second squeegee 20 also to the left, so that the virtual vertical pivot axis moves to the right and to the rear (with respect to the forward machining direction A). By a corresponding mounting of the second squeegee 20 to the brush box 1 ensures that despite a short distance between the second suction bar 20 and the brush box 1, the second squeegee 20 does not collide in the Maximalverschwenkposition with the brush box 1.

In FIG. 3 the trajectory 21 of the virtual vertical pivot axis of the second squeegee 20 is shown. Depending on the angular position of the second suction strip 20 in relation to the brush box 1, the virtual vertical pivot axis shifts on the in FIG. 3 For example, this trajectory 21 may also be parabolic.

In the FIGS. 1 to 6 For example, the first squeegee 10 is substantially straight in its longitudinal orientation transverse to the forward direction of operation A. However, the first squeegee 10 may have any geometry that is adaptable depending on the circumstances. In addition, in the FIGS. 1 to 6 the second squeegee 20 is curved, the concave side of the second squeegee 20 is oriented in the direction of A. This curvature of the second squeegee 20 may be partially circular or, alternatively, parabolic.

FIGS. 7 and 8th show a second embodiment of the soil cultivating device 100. The soil cultivating device 100 according to the second embodiment differs from the soil cultivating device 100 according to the first embodiment 100 in that the two pivot arms 25, 25 'do not intersect in plan view. In addition, the two pivot arms 25, 25 'further away from the central plane of symmetry M arranged. Furthermore, the bearing points 26, 26 'of the pivot arms 25, 25' are arranged further in the direction of the second suction strip 20. Except for these differences, the tilling devices according to the first and second embodiments are constructed identically, so that a repetitive description of the functionality for the purpose of avoiding repetition is omitted.

FIG. 7 shows the tillage implement 100 according to the second embodiment in a straight ahead. On the contrary shows FIG. 8 the tilling device 100 during a rightward movement. Due to the rightward movement of the soil treatment device 100, the second suction strip 20 also pivots to the right with respect to the brush box 1.

There are also other attachment mimics of the second squeegee 20 on the brush box 1 conceivable. Thus, for example, the two pivot arms 25, 25 'at two spaced bearing points 26, 26' on the brush box 1 to be pivotally mounted, whereas the opposite ends of the pivot arms 25, 25 'are attached at one point to the second suction. For this purpose, in the corresponding second squeegee facing end portions of the pivot arms have these slots, so that a pivoting of the second squeegee 20 relative to the brush box 1 is made possible.

In all the illustrated figures, the second squeegee 20 below a wheel 50 is arranged, on which the second suction strip 20 is supported.

The present invention discloses a soil tillage implement 100 by means of which, in both a forward direction of operation A and in an opposite reverse working direction, tiller 100 reliably sucks a submerged water film over either first squeegee 10 or second squeegee 20 without the entire tillage equipment 100 must be pivoted.

According to a preferred embodiment of the soil tillage implement 100, the tiller body (s) 30a, 30b is / are a disc brush 30a, 30b whose drive axis / drive axes are parallel to the vertical pivot axis.

This corresponding soil cultivation device 100 preferably comprises a first disc brush 30a and a second disc brush 30b, the drive axes of which run parallel to the vertical pivot axis, wherein the first disc brush 30a and the second disc brush 30b are offset from one another transversely to the working direction.

In this corresponding soil cultivating device 100, preferably the first disc brush 30a and the second disc brush 30b can be driven in opposite directions of rotation.

LIST OF REFERENCE NUMBERS

1

brush box

10

first squeegee

10 '

End section (the first squeegee)

12

Suction opening (the first squeegee)

14a

leading squeegee (the first squeegee)

14b

trailing squeegee (the first squeegee)

17, 17 '

Transverse side (the first squeegee)

20

second squeegee

20 '

End section (the second squeegee)

21

Curved track, parabolic path (the virtual axis of the second squeegee)

22

Suction opening (the second squeegee)

24a

leading squeegee (the second squeegee)

24b

trailing squeegee (the second squeegee)

25, 25 '

swivel arm

26, 26 '

Bearing point (of the swivel arm)

27, 27 '

Transverse side (the second squeegee)

30

Processing state device

30a

Processing body, disc brush

30b

Processing body, disc brush

40

suction

50

wheel

100

Tillage equipment

A

Forward operating direction

M

Center symmetry plane (brush box)

Claims (14)

1. Floor treatment device (100) for cleaning a subfloor, comprising:

   - a brush box (1);

   - a first suction strip (10) integrated into the brush box (1) or upstream of the brush box (1) in the forward operating direction (A);

   - a second suction strip (20) which is arranged downstream of the brush box (1) in the forward operating direction;

   - a treatment member device (30, 30a, 30b) which is arranged between the first suction strip (10) and the second suction strip (20),
   characterised by the following features:

   - the second suction strip (30) is pivotable to the left and/or to the right parallel to the subfloor, between two maximum pivot positions, relative to the brush box (1); and

   - in the maximum pivot positions of the second suction strip (20) to the left or to the right, the second suction strip (20) is in contact with the first suction strip (10) at the respective end portions (10', 20') thereof.
2. Floor treatment device (100) according to claim 1, wherein the treatment member device (30, 30a, 30b) comprises at least one treatment member (30a, 30b), preferably two treatment members (30a, 30b).
3. Floor treatment device (100) according to any of the preceding claims, wherein the second suction strip (20) is pivotable in the brush box about a virtual vertical pivot axis, wherein the virtual vertical pivot axis moves on a curved path (21) depending on the pivoting and the pivot direction of the second suction strip (20) in such a way that the virtual vertical pivot axis moves together with a first movement component in the opposite pivot direction to the second suction strip (20) and/or together with a second movement component in the direction opposite to the forward operating direction (A).
4. Floor treatment device (100) according to claim 3, wherein the curved path (21) is a parabolic path (21).
5. Floor treatment device (100) according to any of the preceding claims, wherein the second suction strip (20) is fastened to the brush box (1) by means of two swivel arms (25, 25').
6. Floor treatment device (100) according to claim 5, wherein the two swivel arms (25, 25') are fastened to the brush box (1) at two bearing points (26, 26') which are mutually spaced and are arranged preferably symmetrically about a central plane of symmetry (M) of the brush box (1).
7. Floor treatment device (100) according to either claim 6 or claim 7, wherein the two swivel arms (25, 25') intersect in plan view.
8. Floor treatment device (100) according to any of the preceding claims, wherein the first suction strip (10) comprises a first suction opening (12) and the second suction strip (20) comprises a second suction opening (22), out of which leading and trailing suction lips (14a, 14b; 24a, 24b) respectively project, which suction lips can be brought into contact with the subfloor.
9. Floor treatment device (100) according to any of the preceding claims, wherein the first suction strip (10) comprises first edge openings on its transverse sides (17, 17'), out of which openings the leading and the trailing suctions lips (14a, 14b) project and are in mutual contact in the region of the end portions (10') thereof.
10. Floor treatment device (100) according to any of the preceding claims, wherein the second suction strip (20) comprises second edge openings on its transverse sides (27, 27'), out of which openings the leading and the trailing suction lips (24a, 24b) project and are in mutual contact in the region of the end portions (20') thereof.
11. Floor treatment device (100) according to any of the preceding claims, wherein the first suction strip (10) is designed to be substantially straight in the longitudinal orientation thereof, transverse to the operating direction.
12. Floor treatment device (100) according to any of the preceding claims, wherein the second suction strip (20) is arcuate, the concave side of the second suction strip (20) being orientated in the operating direction.
13. Floor treatment device (100) according to any of the preceding claims, further comprising a suction device (40) which is connected to the first suction strip (10) and/or the second suction strip (20).
14. Floor treatment machine, comprising a floor treatment device (100) according to any of the preceding claims.

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