EP2832277B1 - Hand-guided soil working device - Google Patents

Description

The invention relates to a handheld tillage implement with a bottom part comprising at least one tool rotatable on a floor by means of a drive, as well as with a guide part comprising at least one handle and connected to the bottom part via a hinge arrangement which is designed such that Guide part, starting from a vertical circumferentially in all directions in angular positions relative to the vertical pivot and angular limited in each angular position relative to the vertical torque-transmitting communicates with the bottom part in operative connection.

Such a harrow is from the WO 2011/023169 A2 known. The known soil working device is a scouring-suction machine, which is intended for the wet cleaning of soils. The scouring-suction machine has a guide part with two handles, which can be grasped and moved by an operator with both hands. The guide member is connected by means of a hinge assembly with a bottom part, wherein the hinge assembly is designed such that the guide member relative to the bottom part circumferentially in all directions can be pivoted angularly and yet transmit torque to the bottom part. The bottom part has two rotatable, plate-shaped tools which are driven. The two plate-shaped tools a Saugleistenanordnung is assigned, which rests on sealing lips in the operating position of the scouring-suction machine on a floor and is used to suck a dirty water fleet.

The object of the invention is to provide a harrow of the type mentioned, which allows a further simplified operation over the prior art.

The object is achieved by the specified in claim 1 technical teaching.

Advantageous developments of the invention are specified in the subclaims. According to the invention, the at least one rotatable tool is arranged on the bottom part in such a way that, during operation of the soil cultivating device, the at least one rotatable one Tool exerts a permanent linear propulsion on the bottom part. The at least one tool is rotatable exclusively in the direction of advance. An operator therefore no longer has to pull or push the soil cultivation device according to the invention into the corresponding processing direction, as is the case in the prior art. Rather, the operator only has to make a control of the self-propelled moving floor part. By the joint arrangement a particularly simple control of the harrow by an operator can be achieved because a simple, initiated manually via the at least one rotary movement on the guide member in each angular position of the guide member relative to the bottom part ensures a corresponding torque transmission to the bottom part, so that the direction the bottom part can be changed via a control of the guide part. As a result, an extremely small amount of force is necessary to control the harrow. Due to the great flexibility of the guide part relative to the bottom part also floors can be easily edited even in hard to reach areas. The solution according to the invention is provided both for dry tillage equipment and for wet working tillage equipment. As a rotatable tools both tools are provided with approximately vertically oriented axis of rotation and tools with approximately horizontally oriented axis of rotation. It is essential to the invention that the at least one rotatable tool is arranged relative to the base part in such a way that, during operation, a linear advance of the base part results through the tool rotating on the floor. This means that the bottom part constantly moves in a straight line forward during the operation of the at least one tool, as long as no control process is initiated by corresponding pivoting of the guide member. If at least one rotatable tool in the form of a roller or brush is provided, which is mounted with a horizontal axis of rotation in the bottom part, causes a rotation of the at least one tool in the advancing direction inevitably a linear forward movement of the bottom part. Preferably, a single, brush or roller-shaped tool is provided. Alternatively, at least two roller or brush-shaped tools, each having a horizontal axis of rotation, can be arranged next to one another or one behind the other. A correspondingly linear propulsion arises in this alternative through a synchronized drive control of the at least two tools. In successively arranged tools with horizontal axis of rotation, these can also rotate in opposite directions, as long as acting on the ground, resulting driving force for the bottom part is achieved. In particular, a tool with greater force or higher speed can act on the ground than the other tool, the first tool then has to have a rotation in the advancing direction. In tools with approximately vertical axis of rotation at least two counter-rotatable tools, especially in the form of plates, are provided which are slightly inclined relative to a horizontal plane to achieve the desired linear propulsion function by unequal rotational friction of each plate on a corresponding ground. The two preferably dish-shaped tools are advantageous mirror-symmetrical inclined to a vertical central longitudinal plane of the bottom part by equal angular amounts and are driven in opposite directions with synchronized drive speeds to achieve the desired linear propulsion.

The harrow is designed as a wet cleaning machine, in particular as a scouring-suction machine, and has a - seen in the advancing direction - behind the rotatable tool on, resting in operation on the ground Saugleistenanordnung. The Saugleistenanordnung comprises at least one extending over a processing width of the bottom part and resting on the floor sealing lip. Preferably, two substantially mutually parallel sealing lips are provided, between which a corresponding suction by at least one suction nozzle of a suction system of the wet cleaning machine is formed. Preferably, the Saugleistenanordnung is arcuately curved. The Saugleistenanordnung may also include a plurality of juxtaposed or successively arranged Saugleistenabschnitte. According to the invention, only a single one or more parts designed Saugleistenanordnung is provided, which is arranged behind the at least one rotatable tool. Since the at least one rotatable tool during operation of the wet cleaning machine exerts a permanent linear propulsion, it is ensured that the desired cleaning effect is achieved permanently by a simple, automatic forward movement of the bottom part. By means of the hand-held guide part of the self-propelled moving floor part is controlled. In the wet cleaning machine according to the invention, first of all fresh water is supplied with or without cleaning additives in the area of the at least one rotatable tool, which first has a corresponding scouring or scrubbing operation through the supports at least one rotating tool. Subsequently, the generated dirty water is sucked up behind the at least one rotating tool by the tracked Saugleistenanordnung and discharged into a recovery tank.

In a further embodiment of the invention, the joint arrangement comprises at least two mutually different, in particular mutually orthogonal, hinge axes which are each different to a vertical axis of the guide member, in particular orthogonal, aligned. The vertical axis of the guide part is to be understood as meaning a central longitudinal axis in the longitudinal extent of the guide part which extends in the vertical direction of the tillage device when the guide part is oriented vertically relative to a floor and relative to the floor part. Advantageously, the two hinge axes are aligned orthogonal to each other. In order to ensure that in each angular position of the guide member relative to the vertical torque transmission can be exerted on the bottom part, the hinge axes must also different to the vertical axis of the guide member, in particular orthogonal aligned. This ensures that in a rotational movement of the guide member about its vertical axis, which is initiated manually, in each angular position of the guide member relative to the bottom part of a torque is transmitted to the bottom part. The possibility of torque transmission of the guide member to the bottom part is limited to angular positions of the guide member relative to the vertical of less than 45 to 50 °. The joint axes can be present in real terms by corresponding mechanical joint designs. Alternatively, the hinge axes may also be provided virtually or imaginarily within at least one corresponding solid-body joint forming the hinge assembly.

In a further embodiment of the invention, the at least two hinge axes are spaced apart in the direction of the vertical axis of the guide part. In a further embodiment, a weight distribution of the guide part is displaced down to the upper hinge axis. Advantageously, a center of gravity of the guide part is arranged in the ready state in the region of an upper hinge axis or below the upper hinge axis. A ready state is when the scrubber is filled with fresh water (cleaning water) ready for use and the guide member in an upright operating position (at an angle between 0 ° and 45 ° to a vertical). A weight distribution of corresponding components within the guide member is designed so that the center of mass of the guide member is located in a lower half of the guide member - based on an entire longitudinal extension of the guide member. Due to the displacement of the center of gravity in the lower half of the guide part, a support of a large part of the weight of the guide part in the region of the joint arrangement is made possible. As a result, in the upper region of the guide part, which comprises the at least one handle, a considerably smaller holding force for the guide part is required by an operator than would be the case if a weight distribution of the guide part were further displaced upwards.

In a further embodiment of the invention, a lower functional portion of the guide member flanking the hinge assembly at least partially. Advantageously, the lower functional portion - as seen in the advancing direction - positioned in front of the hinge assembly, so that is supported at a corresponding inclination of the guide member to the rear of the functional portion in the region of the upper hinge axis. The handling of the soil cultivation device for an operator is thereby further improved. A corresponding functional section may be a fresh and / or dirty water tank, which have a relatively large weight in the filled state. Alternatively, it is provided according to a further embodiment to provide a suction for the Saugleistenanordnung, in particular a suction turbine, as a lower functional portion of the guide member. Also, the suction drive has a relatively large weight, so that also results from the arrangement of the suction drive in the lower region of the guide part shifted to the hinge assembly weight distribution. The displacement of the suction drive in the guide part also allows a simplified design of the bottom part, which then essentially only the at least one rotatable tool, an associated rotary drive and the Saugleistenanordnung are assigned.

In a further embodiment of the invention, the bottom part - seen in the forward drive direction, the front supported on the at least one rotatable tool and the rear of the Saugleistenanordnung in normal operating position on the ground, and the hinge assembly is articulated in an attack area on the bottom part such that a uniform or front-heavy distribution of a total weight of the harrow on the front and the rear support of the bottom part results on the ground. The joint assembly thus attacks at a point on the bottom part, which initiates the weight of the guide member on the bottom part, that a defined distribution of the total weight of the harrow on the front support in the region of at least one rotatable tool on the one hand and on the rear support in the area the Saugleistenanordnung other hand. A uniform weight distribution means that an at least largely equal distribution takes place on the front and the rear support. A front-weighted weight distribution means that in the area of the at least one rotatable tool a support of more than 55% up to a maximum of 90% of the total weight takes place. Due to the described distribution ratios a good cleaning power is ensured by the at least one rotatable tool. For the support of the bottom part on the ground only the at least one rotatable tool and the Saugleistenanordnung are necessary.

In a further embodiment of the invention, the Saugleistenanordnung is associated with at least one particular rollable or slidable floor spacer, which causes in addition to at least one sealing lip of the Saugleistenanordnung a support of the bottom part on the floor. The bottom spacer ensures that when resting on a floor, a bend of the at least one sealing lip is limited. The sealing lip is thereby defined always curved by an equal angle, resulting in a particularly good sealing effect regardless of the nature of a soil surface. This ensures that the at least one sealing lip is not subject to premature wear due to overloading. In addition, it is ensured that the sealing lip does not bend too much. As a floor spacer several provided over the extension of the Saugleistenanordnung roller blind sliders can be provided. Alternatively, a front sealing lip of the Saugleistenanordnung be designed stiffer and so take over the function of a floor spacer, which slides along the floor in front of the actual sealing lip. This front sealing lip does not bend through, but is stiff in the vertical direction. In a particularly advantageous manner, the at least one bottom spacer is arranged vertically adjustable. As a result, the contact surface of the at least one sealing lip on the floor can be changed.

In a further embodiment of the invention, the engagement region of the joint arrangement on the bottom part in the advancing direction of the bottom part forward or backward adjustable. This makes it possible to vary the weight distribution on the front and rear support of the bottom part to the ground.

In a further embodiment of the invention, the bottom part comprises a support bridge extending along the direction of advance of the bottom part of the bridge, on which the attack area of the hinge assembly is provided, and each extending transversely to the direction of advance and parallel to the ground pivot axis on the Saugleistenanordnung one hand and in the field of storage the at least one rotatable tool on the other hand is articulated. The support bridge is supported on at least two symmetrically aligned to a vertical central longitudinal plane points on the Saugleistenanordnung. By this configuration, the Saugleistenanordnung and the storage, in particular a housing for which at least one rotating tool is not rigidly connected to each other, but coupled to each other articulated. A change in the support in the region of the at least one rotatable tool, in particular due to wear of the tool, therefore has no influence on the rear support in the region of the Saugleistenanordnung and consequently also has no influence on a change in the position of the Saugleistenanordnung. Conversely, lowering the squeegee assembly in the course of operation of the wet cleaning machine does not result in inevitable lifting or tilting of the rotatable tool in the area of the front support. Because by the pivot axes described, which are parallel to each other, this results in a static decoupling of the two supports of the bottom part to the ground from each other. This ensures that tilting and tilting movements of the guide part, which are initiated by the operator, have no influence on the position of the Saugleistenanordnung. The suction and sealing effect of the Saugleistenanordnung therefore always remains the same. The support bridge carries next to the guide part, which is supported on the hinge assembly on the support bridge, in an electric motor drive for the at least one rotatable tool and an electromotive Suction drive of the suction system and at least one energy storage, preferably in the form of a rechargeable battery, particularly advantageous in the form of a lithium-ion battery. The weight of a corresponding accumulator increases pressure on the Saugleistenanordnung and improves their suction and sealing effect.

In a further embodiment of the invention, a suction system for a Saugleistenanordnung associated flow channel in the guide member is arranged coaxially or parallel to the vertical axis of the guide member. The idea of this embodiment is to make the guide part as compact as possible and weight-optimized to distribute around the vertical axis of the guide member. The laying of the flow channel in the region of the vertical axis of the guide part allows a space-saving design. The flow channel can be formed by a flexible hose or a dimensionally stable tube.

In a further embodiment of the invention, the guide part comprises a longitudinal axis extending along the support tube, in which the flow channel is integrated. The support tube has a dual function by serving as a support for the other functional components of the guide part. On the other hand, it forms the flow channel of the suction system. In the support tube and a plurality of flow channels of the suction system and / or a Frischwasserzuführsystems can run. In addition, at least one cable channel can be integrated in the support tube, in particular by coextrusion. In this cable channel control and power supply cables may be misplaced.

In a further embodiment of the invention, the suction drive is arranged at a lower end region of the support tube. Preferably, the suction drive is designed as an electric suction turbine, which is coaxially fixed to the lower end portion of the support tube and is directly connected to the running in the support tube flow channel in operative connection. This results in a short suction path for the suction turbine, so that only small suction losses occur. As a result, a lower energy consumption is ensured, which allows a small and weight-saving accumulator.

In a further embodiment of the invention, fresh and dirty water tanks of the suction system are designed elongated and flank the support tube on opposite sides Pages. As a result, the fresh and dirty water tanks are grouped directly around the vertical axis of the guide part. The distribution of the fresh and dirty water tanks on opposite sides of the support tube results in a particularly good weight distribution on both sides of the vertical axis of the guide part, which greatly simplifies the handling of the guide member by an operator. Under fresh water cleaning water is to be understood, which is supplied to the at least one tool and can be designed in particular from water and cleaning additives or as a different running cleaning solution.

Advantageously, the suction drive - as seen in the advancing direction of the bottom part - positioned in front of the hinge assembly, so that in normal straight-ahead position of the wet cleaning machine, the guide member is placed obliquely backwards and the operator runs behind the bottom part. In this position, the weight of the guide part, in particular of the suction drive, is supported in the region of the upper hinge axis of the hinge arrangement, so that a holding and guiding force in the region of the handle of the guide part for a corresponding operator is extremely low. This allows a simple and energy-saving handling of the wet cleaning machine in its operating state.

In a further embodiment of the invention, at least one support means is provided on the bottom part, which supports the bottom part in a tilted transport or storage position statically determined on the ground. As a result, the tillage implement can be stowed to save space in not required rest state. Such a parking position also ensures relief of the at least one tool and the Saugleistenanordnung, resulting in a low wear.

In a further embodiment of the invention, the at least one support means designed as a sliding or rollable support member. In addition to the support and backup in the unneeded rest state (storage position), the at least one sliding or rolling movable support element therefore also serves to transport the harrow, if this is not in its operating condition.

In a further embodiment of the invention, the guide member is secured to the bottom part in the transport or storage position of the bottom part by means of at least one securing means in a rest position force-limited, in particular the guide member and the bottom part are supported in an over-center position relative to each other statically determined. By this configuration, it is possible to transfer the guide member in a defined rest position relative to the bottom part. The force-limited securing means of the securing means ensures that the guide member can be released from the bottom part in a simple manner and with little effort again to transfer the bottom part and the guide member in the operating position. In an advantageous manner, in the rest position of the cultivator, the guide part and the bottom part are statically supported in an over-center position relative to each other. This means that the guide part over the at least one hinge axis of the joint assembly is pivoted relative to the bottom part so far above the bottom part, that the center of mass of the guide member is positioned above the bottom part.

In a further embodiment of the invention, the at least one securing means is positively or positively effective. The at least one securing means can be mechanically non-positively or positively effective. Alternatively, it is provided that the frictional connection is generated by the at least one securing means by magnetic force. A mechanically force-locking or positively locking securing means can be embodied by a releasable latching connection, by a hook-and-loop fastener or a differently configured adhesive fastener. In a non-positive effect of the securing means by magnetic force, a permanent magnet is preferably provided on the guide part or on the bottom part, which is opposite to a corresponding counterpart on the bottom part or on the guide part, a magnetizable surface, in particular a metallic surface. The advantage of a securing means designed as a magnetic security is that the magnetic forces in the direction of corresponding magnetic field lines are relatively high, with a movement of the guide member relative to the bottom part transverse to these magnetic field lines, however, a simple release of the magnetic fuse can be done with little force.

The invention also relates to a soil cultivation system with a hand-held soil cultivating device, as described above, as well as with a storage trolley, the at least one replaceable and filled fresh water tank and at least one receptacle for a filled waste water tank and / or a dirty water receptacle whose volume corresponds to at least twice the volume of a waste water tank. In addition, the storage trolley complementarily also hold at least one accumulator, so that if necessary, an exchange of the accumulator can be done on the scrubber without much effort. This makes it possible to work even larger floor space saving time and money. Through the storage trolley, it is possible to keep the volume of fresh and dirty water tanks of the wet cleaning machine low, so as to allow a simple and energy-saving operation by an operator. Due to the fact that at least one, preferably a plurality of fresh water tanks are kept in stock on the supply truck, a quick exchange can take place. The storage trolley is preferably positioned or carried in the vicinity of the harrow during a corresponding period of operation, so that a simple emptying or replacement of a dirty water tank can take place without a corresponding emptying or replacement process must take place at a stationary location of a corresponding building, in the the tillage is done. The storage trolley can also be provided with a holder for receiving or attaching the scrubber, so that the scrubber can be transported on or on the storage trolley.

Fig. 1

zeigt schematisch eine Ausführungsform eines erfindungsgemäßen, handgeführten Bodenbearbeitungsgeräts in Form einer Scheuer-Saug-Maschine,

Fig. 2

schematisch die Scheuer-Saug-Maschine nach Fig. 1 in einer Ansicht schräg von hinten und von unten,

Fig. 3

schematisch in einer Frontansicht einen Bodenteil der Scheuer-Saug-Maschine nach den Fig. 1 und 2,

Fig. 4

in einer schematischen Draufsicht von oben den Bodenteil nach Fig. 3,

Fig. 5

die Scheuer-Saug-Maschine nach Fig. 1 mit ergänzender schematischer Darstellung eines Saugsystems zum Zuführen von Frischwasser und Abführen von Schmutzwasser,

Fig. 6

schematisch eine weitere Ansicht der Scheuer-Saug-Maschine nach Fig. 1 unter Weglassung von Frisch- und Schmutzwassertanks,

Fig. 7

die Scheuer-Saug-Maschine nach Fig. 6 in einer weiteren Betriebsstellung,

Fig. 8

schematisch die Scheuer-Saug-Maschine nach den Fig. 6 und 7 in einer Betriebsposition auf einem Boden unterhalb eines Tisches,

Fig. 9 bis 13

unterschiedliche Betriebspositionen der Scheuer-Saug-Maschine nach den Fig. 6 bis 8,

Fig. 14

die Scheuer-Saug-Maschine nach den Fig. 1 bis 13 in einer aufgestellten Lagerposition,

Fig. 15

in vergrößerter Schnittdarstellung einen Ausschnitt XV der Scheuer-SaugMaschine nach Fig. 14,

Fig. 16

die Scheuer-Saug-Maschine nach Fig. 14 in einer Transportstellung,

Fig. 17

schematisch eine weitere Ausführungsform einer erfindungsgemäßen Scheuer-Saug-Maschine in einer Seitenansicht und

Fig. 18

die Scheuer-Saug-Maschine nach Fig. 17 in einer Draufsicht.

Eine Scheuer-Saug-Maschine nach den Fig. 1 bis 16 stellt ein handgeführtes Bodenbearbeitungsgerät im Sinne der Erfindung dar. Die Scheuer-Saug-Maschine 1 dient zum Nassreinigen von Böden in Gebäuden. Die Scheuer-Saug-Maschine 1 weist einen Führungsteil 2 sowie einen Bodenteil 3 auf, die über eine nachfolgend näher beschriebene Gelenkanordnung 9 miteinander verbunden sind. Der Führungsteil 2 ist längserstreckt und ragt vom Bodenteil 3 aus nach oben ab. Der Führungsteil 2 umfasst ein zentrales, formstabiles Tragrohr 4, an dessen oberen Stirnendbereich zwei zu gegenüberliegenden Seiten abragende Handgriffe 5 befestigt sind. Zwischen den Handgriffen 5 ist ein Steuerblock 22 (siehe Fig. 7) vorgesehen, der ebenfalls fest mit dem oberen Stirnendbereich des Tragrohrs 4 verbunden ist. An einem unteren Endbereich des Tragrohrs 4 ist ein Saugantrieb 6 eines nachfolgend anhand der Fig. 5 näher beschriebenen Saugsystems befestigt. Der Saugantrieb 6 umfasst eine elektrisch betriebene Saugturbine. Der Saugantrieb 6 bildet das untere Ende des Führungsteils 2. Die Handgriffe 5 mit dem Steuerblock 22 bilden das obere Ende des Führungsteils 2. An dem Tragrohr 4 sind oberhalb des Saugantriebs 6 ein Schmutzwassertank 7 sowie ein Frischwassertank 8 lösbar befestigt. Sowohl der Schmutzwassertank 7 als auch der Frischwassertank 8 sind mittels jeweils eines Schnellwechselsystems an dem Tragrohr 4 gehalten und können werkzeuglos entfernt, ausgetauscht oder wieder am Tragrohr 4 befestigt werden.Further advantages and features of the invention will become apparent from the claims and from the following description of preferred embodiments of the invention, which are illustrated by the drawings.

Fig. 1

shows schematically an embodiment of a hand-held tillage implement according to the invention in the form of a scouring-suction machine,

Fig. 2

schematically the scouring-suction machine after Fig. 1 in a view obliquely from behind and from below,

Fig. 3

schematically a front view of a bottom part of the scouring-suction machine according to the Fig. 1 and 2 .

Fig. 4

in a schematic plan view from above the bottom part Fig. 3 .

Fig. 5

the scouring-suction machine after Fig. 1 with additional schematic representation of a suction system for supplying fresh water and discharge of dirty water,

Fig. 6

schematically another view of the scouring-suction machine after Fig. 1 omitting fresh and dirty water tanks,

Fig. 7

the scouring-suction machine after Fig. 6 in another operating position,

Fig. 8

schematically the scouring-suction machine after the 6 and 7 in an operating position on a floor below a table,

Fig. 9 to 13

different operating positions of the scouring-suction machine after the Fig. 6 to 8 .

Fig. 14

the scouring-suction machine after the Fig. 1 to 13 in a stored storage position,

Fig. 15

in enlarged sectional view a section XV of the scouring-suction machine after Fig. 14 .

Fig. 16

the scouring-suction machine after Fig. 14 in a transport position,

Fig. 17

schematically another embodiment of a scouring-suction machine according to the invention in a side view and

Fig. 18

the scouring-suction machine after Fig. 17 in a top view.

A scouring-suction machine after the Fig. 1 to 16 represents a hand-held tillage implement in the context of the invention. The scouring-suction machine 1 is used for wet cleaning of floors in buildings. The scouring-suction machine 1 has a guide part 2 and a bottom part 3, which are connected to each other via a hinge assembly 9 described in more detail below. The guide part 2 is elongated and protrudes from the bottom part 3 from above. The guide part 2 comprises a central, dimensionally stable support tube 4, on the upper end region of which two handles 5 projecting to opposite sides are fastened. Between the handles 5 is a control block 22 (see Fig. 7 ), which is also firmly connected to the upper end face of the support tube 4. At a lower end portion of the support tube 4 is a suction drive 6 one below with reference to Fig. 5 attached suction system described in more detail. The suction drive 6 comprises an electrically operated suction turbine. The suction drive 6 forms the lower end of the guide part 2. The handles 5 with the control block 22 form the upper end of the guide part 2. On the support tube 4 above the suction drive 6, a recovery tank 7 and a fresh water tank 8 are releasably attached. Both the dirty water tank 7 and the fresh water tank 8 are held by means of a quick-change system to the support tube 4 and can be removed without tools, replaced or attached to the support tube 4 again.

The guide member 2 is pivotally connected via an upper hinge axis G ₁ with the hinge assembly 9. The hinge assembly 9, in turn, is pivotally mounted by means of a lower pivot axis G ₂ at the bottom portion. 3

As based on the Fig. 6 can be seen, the support tube 4 of the guide member 2 is coaxial with a vertical axis H _{1 of} the guide member 2 extends. Also, the suction drive 6, which includes the electric suction turbine and a correspondingly dimensionally stable suction housing is fixed coaxially to the vertical axis H ₁ at the lower end face of the support tube 4. The suction housing is a bearing component to which the hinge assembly 9 is articulated. The hinge assembly 9 comprises, as shown in FIG Fig. 2 can be seen, a dimensionally stable support web which is mounted pivotably about the lower hinge axis G ₂ on the bottom part 3. The carrier web is connected via the upper joint axis G ₁ pivotally connected to a support portion of the guide member 2, in particular with an extension of the support tube 4 or a support portion of the suction of the suction drive 6. The support web of the hinge assembly 9 extends in a plane parallel to a vertical axis H ₁ receiving the pivot plane of the guide member 2, within which the guide member 2 according to Fig. 2 is mounted to pivot about the hinge axis G ₁ on the support web of the joint assembly 9. The upper joint axis G ₁ is aligned orthogonal to the vertical axis H _{1 of} the guide part 2. The lower joint axis G ₂ is aligned orthogonal to the upper joint axis G ₁ and orthogonal to the vertical axis H ₁ , as long as the guide member 2 projects in a straight line extension to the support web of the hinge assembly 9 upwards. The hinge axis G ₂ extends in the normal operating position of the bottom part 3 according to the Fig. 1 . 6, 7 parallel to a bottom B, on which the bottom part 3 rests in an operating position. Both the upper joint axis G ₁ and the lower joint axis G ₂ define pure pivot joints, each with two rotational degrees of freedom.

The bottom part 3 has two plate-shaped rotatable tools 11, which are designed as a plate-shaped brush tools. The two tools 11 are rotatably mounted in a bearing housing 14 of the bottom part 3, wherein both tools 11 each have a substantially vertically extending axis of rotation - to the operating position of the bottom part 3 according to Fig. 1 based - are rotatably mounted in the bearing housing 14. The bearing housing 14 comprises a rotary drive for each tool 11. In the illustrated embodiment, the two rotary actuators are formed in a manner not shown by two electric motors. In an embodiment of the invention, not shown, a single, central drive motor is provided, which performs by means of suitable gear synchronously opposite rotation of both tools. A rotary drive can also be formed by an internal combustion engine or by a hydraulic motor.

The bottom part 3 also has a Saugleistenanordnung 12, which also rises like the tools 11 on the floor B. The Saugleistenanordnung 12 is arcuately curved and extends, as shown in FIGS Fig. 4 can be seen, slightly beyond a machining width of the tools 11 to opposite sides out. The Saugleistenanordnung 12 comprises two sealing lips D, which extend over the entire length of the Saugleistenanordnung 12 and spaced from each other to between the sealing lips D to create a defined over the entire length of the Saugleistenanordnung 12 intake slot. The Saugleistenanordnung 12 is also centrally associated with a suction nozzle 16, which is part of the suction system described in more detail below.

As based on the Fig. 3 can be seen, the two tools 11 within the bearing housing 14 by an angle α slightly tilted towards the center down and rotatably supported in this inclined position. The permanent inclination of the adjacent tools 11 is mirror-symmetrical to a vertical central longitudinal plane of the bottom part 3, so that the adjustment angle α according to Fig. 3 are identical in terms of amount. As based on the Fig. 4 can be seen, the tools are also driven in opposite directions to each other in operation of the scouring-suction machine 1 (see arrows in Fig. 4 ). In the in Fig. 4 shown top view, the left tool 11 rotates counterclockwise, the right tool 11, however, in a clockwise direction. Both tools 11 are operated in synchronized operation of the scouring-suction machine 1 in terms of amount at the same speed. As a result of the likewise mirror-symmetrical inclination of the tools 11, a linear advance V is thus permanently applied to the bottom part 3 during rotation operation of the tools 11 (see arrow illustration in FIG Fig. 4 ), which moves the bottom part 3 in a straight line in the advancing direction V. The Saugleistenanordnung 12 is towed behind the bearing housing 14 and therefore inevitably tracked. The Saugleistenanordnung 12 is thus in the operating position of the bottom part 3 thus permanently - related to the direction of advance V - behind the rotating tools eleventh

Both the at least one rotary drive and the suction drive 6 are controlled via the control block 22 between the handles 5 on the guide part 2. For this purpose, appropriate control and switching elements 22 are provided on the control block. Both the rotary drive and the suction drive 6 are electrically powered by an accumulator A, the in Fig. 1 is shown schematically. The accumulator A is mounted on a support bridge 10 of the bottom part 3, which connects the Saugleistenanordnung 12 with the bearing housing 14 of the bottom part 3. In this case, the carrier bridge 10 is coupled to a front end region, which is related to the advancing direction V, via a pivot joint 15 to the bearing housing 14. At a rear end region, the support bridge 10 by means of another pivot joint unit 13 on the Saugleistenanordnung 12 hinged. The pivot axes of the two pivot joints 13 and 15 are aligned parallel to each other and parallel to the lower hinge axis G ₂ . The pivot joint unit 13 comprises two articulation points on the suction joint arrangement 12 with a common pivot axis, which make a uniform distribution of force on the Saugleistenanordnung 12 ( Fig. 4 ). The two pivot points of the pivot joint unit 13 are provided on opposite sides of the suction nozzle 16, which is positioned centrally in the Saugleistenanordnung 12.

The Saugleistenanordnung 12 is with their sealing lips D over the entire length of the Saugleistenanordnung 12 and thus over the entire processing width of the bottom part 3 evenly and consistently on the floor B. The Saugleistenanordnung 12 are also associated with a plurality of ground spacers 27 which are distributed over the length of the Saugleistenanordnung 12 ( Fig. 4 ). The bottom spacers 27 prevent excessive bending and compression of the sealing lips D, in addition to the sealing lips D effect a support on the bottom B. As a floor spacer 27, a plurality of distributed over the length of the Saugleistenanordnung 12 arranged rolling or sliding elements are provided which cause additional support of the Saugleistenanordnung 12 on the bottom B and ensure uniform bending and curvature of a rear sealing lip 12 Saugleistenanordnung.

The Saugleistenanordnung 12 has an arcuately curved support beam, in which the suction nozzle 16 is provided. The support beam is designed dimensionally stable. On an underside of the support beam, the two extending over the entire length of the Saugleistenanordnung 12 sealing lips are provided, wherein a front in the drive direction sealing lip passages or recesses for receiving the dirty water in the suction space between the rear sealing lip and front lip are provided. The rear sealing lip is made of an elastomeric material and is in the operating position of the scrubber and in the operating position of the bottom part 3 consistently over its entire length on the floor B. It is bent over a certain angle to the rear, ie curved. In order to ensure that this angle does not change, the bottom spacers 27 are provided, which fastened behind the sealing lip on the support bar 12 of the Saugleistenanordnung are. The ground spacers 27 are according to the embodiment Fig. 4 designed as sliding elements, which are supported at the defined angle to the rear bent sealing lip on the bottom B and thus prevent further lowering of the support beam and the Saugleistenanordnung 12 down.

In an embodiment of the invention not shown, the front sealing lip of the Saugleistenanordnung serves as a bottom spacer by being made of a substantially dimensionally stable sliding material and takes over the support of the Saugleistenanordnung and the support beam on the floor. Additional rolling or sliding elements are not needed in this embodiment. The at least substantially dimensionally stable front sealing lip serves for the support and for the defined angular orientation of the rear, curved sealing lip.

As based on the Fig. 5 can be seen, a dirty water suction 17 is connected to the suction nozzle 16, which opens via a feed port 18 in the region of an upper side of the dirty water tank 7 in this. In the support tube 4, a reference to the reference numeral 19 indicated flow channel is integrated, which forms a suction channel for generating a negative pressure in the dirty water tank 7. By starting the suction drive 6 air is sucked from the waste water tank 2 via a corresponding intake between support tube 4 and recovery tank 7 in the suction channel 19, whereby the dirty water tank 7, a negative pressure is created, the desired suction for suction generated by dirty water in the region of Saugleistenanordnung 12. The supply pipe 18 is brought into the waste water tank 7 so far that no dirty water can reach the suction channel 19 in the support pipe 4 via the suction opening for generating the negative pressure. A shape of the dirty water tank 7 is selected such that even with horizontal position of the guide member 2 no dirty water can get into the suction port and the suction channel 19.

As a fresh water supply system, a fresh water line 20 is also led from the fresh water tank 8 to the bottom part 3, which opens into a feed pipe 21 via which fresh water is supplied to the processing area of the tools 11. Fresh water can be tap water with or without cleaning additives. alternative fresh water is also a non-water-based cleaning solution.

During operation of the scouring-suction machine 1, the tools 11 rotate in accordance with FIG Fig. 4 on the floor and clean it together with the supplied fresh water. In the process, the tools 11 additionally move in a linear manner in the advancing direction V. Accordingly, a wastewater liquor S collects, as seen in the advancing direction V, behind the rotating tools 11, which are sucked up by the suction bar arrangement 12. The previously described lines for dirty water and fresh water are designed to be flexible at least in sections in order to be tracked relative to pivoting movements of the guide part 2 relative to the bottom part 3, without putting the suction system and Frischwasserzuführsystem out of operation.

As based on the Fig. 6 to 13 can be seen, the guide member 2 is freely pivotable relative to the bottom part 3 via the hinge assembly 9 in all directions. By the two mechanically defined pivot joints in the region of the upper joint axis G ₁ and the lower joint axis G ₂ in each pivot position of the guide member 2 on the bottom part 3 is still a corresponding torque transmitted by a rotational movement of the guide member about a vertical axis H ₂ Fig. 6 ) was introduced by an operator in the guide part 2 by means of a corresponding rotational load of the handles 5. Based on Fig. 9 shown in the direction of advancement V rectilinear guide the scouring-suction machine 1 is shown, in which an operator behind the guide part 2 runs and holds the handles 5 in the straight ahead position. In Fig. 10 It is shown that the operator can move laterally offset to the bottom part 3, so that the guide member 2 is pivoted in accordance with obliquely backwards and to the side and yet the rectilinear propulsion of the bottom part 3 is ensured. In the illustration according to Fig. 11 the operator runs in the direction of advance V in front of the bottom part 3. Accordingly, the guide member 2 is pivoted relative to the bottom part 3 to the front. In the presentation according to Fig. 12 a rotational movement is exerted on the bottom part 3 via the guide part 2 and the handles 5 by the operator in order to effect a change of direction of the bottom part 3. In Fig. 13 the bottom part 3 moves automatically obliquely along a peripheral edge of a wall W. On the basis of Dashed representation of the guide member 2 it can be seen that the guide member can be performed in different pivot positions relative to the bottom part 3 in order to control the desired movement of the bottom part 3. In Fig. 1 is recognizable as the scouring-suction machine 1 initially forward according to Fig. 9 is controlled under a table 9, then by means of a corresponding rotation of the guide member 2 analog Fig. 12 in the in Fig. 8 shown position is deflected and finally by turning the guide member 2 again Fig. 11 under the table T can also be brought out again. The operator must exercise neither pushing nor pulling forces in all these operations, since the automatic propulsion of the bottom part 3 makes the forward movement of the bottom part 3 inevitably.

Based on Fig. 1 It can be seen that the suction drive 6 is partially parallel to the support web of the hinge assembly 9 extends to the lower hinge axis G ₂ out. In addition, the suction drive 6 is positioned in front of the carrier web of the joint arrangement 9. Due to the relatively high weight of the suction drive 6, a center of gravity of the guide part 2 in the illustrated inclined position of the guide part 2 is displaced relatively far down to the upper hinge axis G ₁ . In addition, the dirty water tank 7 and the fresh water tank 8 on long sides stretch tightly against the support tube 4. Thus, a large part of the weight of the guide part 2 is received in the region of the joint axis G ₁ of the joint assembly 9 and introduced into the bottom part 3. This means that in the in Fig. 1 shown alignment of the guide member 2 is a holding and guiding force for an operator in the area of the handles 5 is extremely low. The guide member 2 is therefore movable without much effort to control the bottom part 3.

The bottom part 3 is supported solely on the two tools 11 on the one hand and the Saugleistenanordnung 12 on the other hand on the bottom B in the operating position of the scouring-suction machine 1. Since the guide member 2 is in turn supported on the bottom part 3 via the hinge assembly 9, the total weight of the scouring-suction machine 1 via a front support in the region of the support of the tools 11 on the bottom B and a rear support in the region of the support the sealing lips D supported on the bottom B. An attack region of the joint assembly 9 on the bottom part 3, by the lower hinge axis G ₂ to the support bridge 10, is selected so as to provide a uniform weight distribution of the total weight of the scrubber-suction machine 1 on the front support in the area of the tools 11 and the rear support in the area of the squeegee assembly 12. Depending on the location of the attack area, instead of a uniform weight distribution, a front-heavy weight distribution in the direction of the tools 11 can also be made.

As based on the Fig. 14 to 16 can be seen, the scouring-suction machine 1 can be set up in a storage position, which defines a non-use position for the scouring-suction machine 1. In this case, the bottom part 3 is tilted over its front edge, which is defined by the leading edges of the rotatable tools 11, upwards. In the region of an upper side of the bearing housing 14, a support means in the form of a support roller 23 is arranged on which the bottom part 3 in the storage position according to Fig. 14 supported. The bottom part 3 is tilted so far that results in this storage position, a statically stable support on the front edge of the tools 11 on the one hand and the support roller 23 on the other hand. Instead of a single, centrally arranged support roller 23 can also be provided a plurality of parallel spaced adjacent support rollers. The guide member 2 is pivoted for the non-use position corresponding storage position also relative to the erected bottom part 3 via a vertical out until securing means 25, 26 between the bottom part 3 and the guide member 2 to each other come into force fit. The guide part 2 is according to the embodiment Fig. 14 positioned in this position in an over-center position relative to the bottom part 3, so that the center of gravity of the guide part 2 is stably located above the bottom part 3. As a securing means, a permanent magnet 25 is provided on the guide part 2, which is assigned to the bottom part 3, a corresponding magnetizable surface 26. Due to the pivotal movement of the guide member 2 relative to the already established bottom part 3, the permanent magnet 25 and the magnetizable surface 26 engage each other and cause a magnetic force limited securing the guide member 2 on the bottom part 3. The magnetic force protection can be easily by pivoting the guide member 2 to the Joint axis G _{1 are} repealed by the guide member 2 as shown in FIG Fig. 14 is orthogonally swung out of the plane. In this case, the mutually facing surfaces of the permanent magnet 25 and the magnetizable surface 26 slide laterally past each other. This movement is possible without much effort, since the magnetic force acts vertically between the adjacent surfaces of the magnetic security, but not parallel to this. Based on Fig. 16 can be seen that the scouring-suction machine 1 in this in Fig. 14 illustrated securing position can also be transported in a simple manner by the scouring-suction machine 1 on the at least one support roller 23 manually tilted forward and then pulled or pushed over the handles 5.

The scouring-suction machine 1 a after the FIGS. 17 and 18 basically has the same structure as the previously based on the Fig. 1 to 16 Scouring suction machine described in detail 1. Functionally identical parts and sections are provided with the same reference numerals with the addition of the letter a. In the following, only the differences of the scouring-suction machine 1 a to the scouring-suction machine 1 described above will be discussed in order to avoid repetition. In addition, the disclosure of the embodiment according to the Fig. 1 to 16 directed. Significant difference in the scouring-suction machine 1a after the FIGS. 17 and 18 it is that instead of plate-shaped rotatable tools 11 a single, cylindrical rotatable tool 11a is provided, which is mounted in the operating position of the scouring-suction machine 1 a aligned parallel to the bottom B axis of rotation in the bottom part 3a. The tool 11a is provided with a single, not shown electric rotary drive. The tool 11a can be driven in only one direction of rotation, in which for the bottom part 3a a permanent propulsion in the direction of arrow (see FIGS. 17 and 18 ) is achieved. The direction of rotation of the tool 11a is in Fig. 17 also represented by a circular arc-shaped arrow. A fresh water supply takes place in the region of the tool 11a analogous to the scouring-suction machine 1 after the Fig. 1 to 16 , The suction of the wastewater liquor is carried out in the same manner in the Saugleistenanordnung 12a by means of the suction and sealing lips Da, as previously described.

The two sealing lips D, Da each Saugleistenanordnung 12, 12 a are in both embodiments according to the Fig. 1 to 18 designed so that a front sealing lip is interrupted or permeable to allow suction of the dirty water fleet, whereas a rear lip prevents the wastewater liquor from remaining on the ground.

Claims (11)

1. Hand-guided floor treatment device having a bottom part (3, 3a) which includes at least one tool (11, 11 a) which is rotatable on a floor (B) by means of a drive, and having a guide part (2, 2a) which includes at least one handle (5) and is connected to the bottom part (3, 3a) by means of an articulated arrangement (9, 9a), which articulation is designed such that the guide part (2, 2a), proceeding from a perpendicular, is pivotable in relation to the perpendicular to angular positions revolving in all directions and is operatively connected to the bottom part (3, 3a) so as to transmit torque in an angularly limited manner in any angular position in relation to the perpendicular, wherein the floor treatment device is implemented as a wet cleaning machine, in particular as a scrubber-drier machine (1, 1 a), and comprises a suction strip arrangement (12, 12a) which - when viewed in the direction of propulsion (V) - is arranged behind the rotatable tool (11, 11a) and in operation rests on the floor (B), characterized in that the at least one rotatable tool (11, 11 a) is arranged on the bottom part (3, 3a) in such a manner that, when the floor treatment device (1, 1 a) is operating, the at least one rotatable tool (11, 11 a) exerts permanent linear propulsion (V) on the bottom part (3, 3a), and in that a suction drive (6, 6a) for the suction strip arrangement (12, 12a) is incorporated in the guide part (2, 2a).
2. Floor treatment device according to claim 1, characterized in that the articulated arrangement (9, 9a) includes at least two articulated axes (G₁, G₂) which differ from one another, are in particular orthogonal to one another, and are aligned in each case differently, in particular orthogonally, with respect to a vertical axis (H₁) of the guide part (2, 2a).
3. Floor treatment device according to claim 2, characterized in that the at least two articulated axes (G₁, G₂) are spaced apart from one another in the direction of the vertical axis (H₁) of the guide part (2, 2a).
4. Floor treatment device according to claim 3, characterized in that a weight distribution of the guide part (2, 2a) is displaced downward toward the upper articulated axis (G₁), wherein in particular a mass centre of gravity of the guide part (2, 2a) in the standby state is arranged in the region of an upper articulated axis (G₁) or below the upper articulated axis (G₁).
5. Floor treatment device according to claim 4, characterized in that a lower operational portion of the guide part (2, 2a) flanks the articulated arrangement (9, 9a), at least partially.
6. Floor treatment device according to claim 5, characterized in that the suction drive (6, 6a) is designed as a lower operational portion of the guide part (2, 2a).
7. Floor treatment device according to any one of claims 1 to 6, characterized in that the suction strip arrangement (12, 12a) has associated therewith at least one floor spacer (27) which, in addition to at least one sealing lip (D, Da) of the suction strip arrangement (12, 12a), brings about support of the bottom part (3, 3a) on the floor.
8. Floor treatment device according to any one of claims 1 to 7, characterized in that a flow channel (19) which is associated with a suction system for the suction strip arrangement (12) is arranged in the guide part (2) coaxially or parallel to the vertical axis (H₁) of the guide part (2).
9. Floor treatment device according to claim 8, characterized in that the guide part (2) includes a support tube (4) which extends along the vertical axis (H₁) and in which the flow channel (19) is incorporated.
10. Floor treatment device according to claim 9, characterized in that the suction drive (6, 6a) is arranged on a lower end region of the support tube (4, 4a).
11. Floor treatment device according to claim 9 or 10, characterized in that fresh water and dirty water tanks (7, 8) of the suction system have an elongated design and flank the support tube (4) on opposite sides.

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