Floor cleaning machine with parking position, method for bringing a floor cleaning machine into a parking position, and method for operating a floor cleaning machine

Abstract

A floor cleaning machine comprising a floor head (12) with a floor head body (18), at least one rotatable cleaning tool (20, 21) arranged on the floor head (12), wherein the floor head (12) is assigned a cleaning installation plane (32) for a floor (22) to be cleaned, a holding rod device (14) which is articulated to the floor head (12) via a joint device (16), and a parking device (114; 180) arranged on the floor head (12) and via which the floor cleaning machine can be parked on a parking surface in a parking position such that the at least one cleaning tool (20, 21) is spaced from the parking surface, characterized in that the parking device (114; 180) has at least one roller (118; 182) which is pivotally mounted on the floor head body (18) via a first pivot bearing (122; 132). is arranged that the parking device (114; 180) has a support foot device (130;181) with at least one support foot (140) which is pivotally arranged on the floor head body (18) via a second pivot bearing (132; 186), wherein the second pivot bearing (132; 186) is spaced from the first pivot bearing (120; 132), and in that the parking device (114; 180) has a coupling device (142; 190) which, when the at least one roller (118; 182) pivots on the first pivot bearing (122; 132), effects a coupled pivoting of the support foot device (130; 181) on the second pivot bearing (132; 186).

Description

[0001] The invention relates to a floor cleaning machine, comprising a floor head with a floor head body, at least one rotatable cleaning tool which is arranged on the floor head, wherein the floor head is assigned a cleaning installation plane for a floor to be cleaned, a holding rod device which is articulated to the floor head via a joint device, and a parking device which is arranged on the floor head and via which the floor cleaning machine can be parked on a parking surface in a parking position such that the at least one cleaning tool is spaced apart from the parking surface.

[0002] Furthermore, the invention relates to a method for bringing a floor cleaning machine into a parking position, wherein the floor cleaning machine has a floor head with at least one cleaning tool and a holding rod device which is hinged to the floor head.

[0003] Furthermore, the invention relates to a method for operating a floor cleaning machine which comprises a floor head with at least one cleaning tool and a holding rod device which is hinged to the floor head.

[0004] EP 3 031 378 A1 discloses a hand-held soil tillage device with a base part comprising at least one tool rotatable on a soil by means of a drive, and with a guide part comprising at least one handle and connected to the base part via an articulated arrangement designed such that the guide part, starting from a vertical, can be pivoted in all directions in an angular position relative to the vertical and is operatively connected to the base part in a torque-transmitting manner at a limited angle in each angular position relative to the vertical. The at least one rotatable tool is arranged on the base part in such a way that, during operation of the soil tillage device, the at least one rotatable tool exerts a permanent linear propulsion on the base part.The soil cultivation device is designed as a wet cleaning machine and has a suction bar assembly located behind the rotating tool, which rests on the ground during operation. At least one support element is provided on the base section, which statically supports the base section on the ground in a tilted transport or storage position.

[0005] EP 2 814 371 B1 discloses a floor cleaning machine with a lifting mechanism.

[0006] WO 2022 / 129900 A1 discloses a floor cleaning machine with a movable support, wherein the movable support has a position in which it is vertically spaced from a floor and a position in which it acts on the floor so that a weight of a working head is supported by the support.

[0007] EP 3 742 950 B1 also discloses a floor cleaning machine with a lifting mechanism.

[0008] The invention is based on the object of providing a floor cleaning machine of the type mentioned above, in which a parking position can be reached in a simple manner.

[0009] This object is achieved according to the invention in the floor cleaning machine of the type mentioned at the outset in that the parking device has at least one roller which is pivotally arranged on the floor head body via a first pivot bearing, that the parking device has a support foot device with at least one support foot which is pivotally arranged on the floor head body via a second pivot bearing, wherein the second pivot bearing is spaced apart from the first pivot bearing, and that the parking device has a coupling device which, when the at least one roller is pivoted on the first pivot bearing, effects a coupled pivoting of the support foot device on the second pivot bearing.

[0010] The parking device can be designed in a structurally simple manner and positioned on the floor head in a space-saving manner and in particular positioned on an underside of the floor head body.

[0011] The parking device provides a plurality of support points via the support foot device and the roller (directly or indirectly) in order to support the floor head on the storage surface in the parking position such that the at least one cleaning tool is spaced apart from the storage surface.

[0012] A parking position is easy to reach and offers high tipping stability.

[0013] The range of movement of the floor head when transitioning from a setup with the cleaning setup level to the parking position is relatively small.

[0014] In particular, a parking position can be achieved in which the position of a tank device on the bottom head and in particular of a tank device for dirty fluid is not significantly changed during the transition to the parking position of the bottom head, so that the risk of sloshing or even leakage of fluid from the corresponding tank device is reduced or does not exist.

[0015] The solution according to the invention enables an at least approximately parallel lifting of the floor head body during the transition from a cleaning position to a parking position, in which the relative spatial orientation of the floor head body to the floor does not change significantly in order to prevent, for example, leakage of dirty fluid from a tank device for dirty fluid on the floor head, as described above.

[0016] In particular, with the solution according to the invention, the parking position of the parking device can be reached automatically in a simple manner.

[0017] The parking position of the floor head can be easily reached. For example, the joint device is locked in such a way that the holding rod device is fixed in terms of its mobility relative to the floor head. The entire floor cleaning machine can then be tilted relative to the storage area at a relatively small tilt angle (in particular less than 30°), and the parking device can be activated, in particular automatically. By tilting back at a similarly small tilt angle, the floor cleaning machine can then be parked on the storage area via the floor head. This results in easy operation, whereby the interim relative tilt of the floor head as a whole to the storage area is slight and in particular lies below an angular range of approximately 50°.

[0018] It is advantageous if the cleaning installation level is defined by at least one cleaning tool and at least one support wheel, which rest on the floor to be cleaned when the floor head is being cleaned. These support the weight of the floor cleaning machine to achieve an optimized cleaning result while being easy to operate (including good maneuverability). In particular, the at least one roller of the parking device is not a support wheel that defines the cleaning installation level.

[0019] It is particularly advantageous if the parking device defines a parking installation plane for the floor head in a parking position, wherein the at least one support leg of the support leg device and the at least one roller and / or at least one support leg arranged on a holder for the at least one roller define the parking installation plane. This results in a space-saving parking option for the floor cleaning machine. In particular, the floor head can be parked while essentially maintaining its alignment to a floor, so that, for example, for a tank device for dirty fluid which is arranged on the floor head, there is no risk of dirty fluid leaking out. In particular, in the parking position of the floor head (with the parking position of the parking device), the at least one cleaning tool is positioned between the floor head body and the parking installation plane.

[0020] Furthermore, it is advantageous if, in the parking position of the floor cleaning machine, the floor head rests on a surface above the parking installation level thanks to the parking device, and if the floor head rests on the surface above the cleaning installation level when the parking device is not activated. This allows for a simple transition to the parking position (and back) from the position of the floor head above the cleaning installation level on the surface, with at least one cleaning tool spaced from the surface.

[0021] It is advantageous if at least one of the following is provided: - in the parking position of the parking device, the parking installation plane is oriented parallel to the cleaning installation plane or at an acute angle of no more than 30° and in particular no more than 15°; - the parking installation level is located in the parking position of the parking device below a bottom side of the floor head body, with the bottom side of the floor head body facing the parking surface; - the cleaning installation level is located in the parking position of the parking device between an underside of the floor head body and the parking installation level.

[0022] This allows the floor head to be parked in a position where, for example, a dirt fluid tank is not significantly pivoted relative to the floor in relation to the cleaning installation level. This prevents, for example, dirt fluid from leaking from the dirt fluid tank.

[0023] If the cleaning installation level is below the underside of the floor head body in the parking position, then at least one cleaning tool can be positioned below the floor head body relative to the floor even when the floor head is in the parking position. This results in a stable parking position with a low risk of tipping.

[0024] It is advantageous if the first pivot bearing defines a first pivot axis and the second pivot bearing defines a second pivot axis, with at least one of the following: - the first pivot axis and the second pivot axis are parallel to each other; - a roller axis of the at least one roller is parallel to the first pivot axis and / or the second pivot axis; - the first pivot axis and / or the second pivot axis is oriented transversely and in particular perpendicularly to a forward direction of travel of the ground head; - the first pivot axis and / or the second pivot axis is parallel to the cleaning installation plane; - the first pivot axis and / or the second pivot axis is parallel to a parking installation plane; - the first pivot axis and / or the second pivot axis are oriented transversely to a rotation axis of the at least one cleaning tool; - the first pivot axis and / or the second pivot axis are oriented parallel to a pivot axis of the joint device for pivotability of the holding rod device to the floor head; - the first pivot axis and / or the second pivot axis are parallel to a roller axis of a transport roller device for the floor cleaning machine.

[0025] This allows the parking device to be integrated into the floor head in a space-saving manner. It can be positioned specifically on the underside of the floor head body. This means that it doesn't take up space on the top of the floor head body for other components of the floor cleaning machine, such as the blower unit, drive motor, torque transmission device, and so on.

[0026] The transport roller device allows the floor cleaning machine in particular to be transported on wheels (in one transport journey), for example to a storage location or to another location, without at least one cleaning tool touching the floor.

[0027] Furthermore, it is advantageous if the at least one roller is located on the cleaning installation level during a cleaning process and rolls along the floor to be cleaned as the floor head moves over the floor to be cleaned and, in particular, rolls freely with it. It is then provided that the at least one roller has no significant supporting function during a cleaning process, i.e. it essentially does not bear any weight of the floor cleaning machine. This results in a structurally simple implementation of automatic accessibility of the parking position of the at least one roller. The at least one roller can be pressed against the floor to be cleaned during a cleaning process. When the floor head with the at least one roller is lifted off the floor (whereby a slight lifting is sufficient), the at least one roller can extend and the roller can automatically move into the parking position, for example via a spring device.The coupling device then moves the support leg assembly into the parking position. It is then sufficient for an operator to perform a slight tilting movement on the ground head.

[0028] In a structurally simple embodiment, a spring device is assigned to the first pivot bearing and / or the at least one roller, the spring force of which tends to pivot the at least one roller away from an underside of the floor head body. The spring device makes it easy to automatically reach the parking position of the at least one roller from a "cleaning position". In the cleaning position, the at least one roller is pressed against a floor to be cleaned by the spring device and in particular has no supporting function. If the floor head is lifted in the area of ​​the at least one roller by a relatively short distance or by a relatively small angle with respect to the floor, the spring force causes the at least one roller to automatically move into its parking position. This, in turn, is transmitted to the support foot device via the coupling device.

[0029] In particular, the at least one roller is mounted in a floating manner on the floor head body via the spring device during a cleaning operation and, in particular, does not have a weight-supporting function for the floor cleaning machine during a cleaning operation. In the parking position of the floor cleaning machine, the at least one roller has a weight-supporting function for the floor cleaning machine, or at least one support foot, which is connected to a holder of the at least one roller, has this supporting function.

[0030] Advantageously, during cleaning operation, a holder for the at least one roller is oriented at a first angle to an underside of the floor head body, and in a parking position of the parking device, it is oriented at a second angle to the underside of the floor head, wherein the second angle is greater than the first angle, and in particular the spring device ensures the transition from the first angle to the second angle. In the first angular arrangement (whereby the first angle can vary within certain limits due to a floating bearing), the at least one roller runs more or less freely during the cleaning process without "disturbing" the cleaning process. In the parking position, the at least one roller is positioned such that the floor head can be supported on a storage surface in the parking position, wherein the at least one cleaning tool is then spaced from the storage surface.The spring device makes it possible, in particular, to achieve an automatic extension of the at least one roller with a transition from the first angle to the second angle.

[0031] It is advantageous if at least one of the following is provided: - the second angle is determined by a stop associated with the parking device; - the first angle is determined by the cleaning installation level.

[0032] To limit the mobility of the at least one roller when pivoting about the first pivot bearing, a stop is provided. This stop can be provided on the base head body and / or integrated into the parking device through the design of the parking device.

[0033] In one embodiment, the parking device comprises a holder for the at least one roller, which is pivotally mounted on the first pivot bearing and on which the at least one roller is rotatably mounted. The coupling device, for example, can also be connected via the holder. Furthermore, it is generally possible to arrange at least one support foot on the holder, which provides support in the parking position in addition to the roller or as an alternative to the roller.

[0034] In one embodiment of a parking device, which can be accommodated in a particularly space-saving manner and is structurally simple to implement, the support leg device has a rod which is pivotally mounted on the floor head body via the second pivot bearing and on which at least one support leg and in particular at least two and in particular exactly two support legs are seated in a rotationally fixed manner. The rotatable rod makes it easy to implement a support leg device with at least one support leg, which is spaced from the cleaning installation plane when the parking device is not activated, and via which a parking position can be reached by appropriate pivoting when activated.

[0035] In a manufacturing-friendly embodiment, the coupling device comprises a rod that is rotatably connected to a holder for the at least one roller, and to which the support foot device is rotatably connected. The rod can be accommodated on the floor head in a space-saving manner. For example, it can be guided between cleaning tools. This allows for a simple transmission of force from the at least one roller to the support foot device.

[0036] In one embodiment, a holder for the at least one roller is articulated to the base head body via the first pivot bearing, a rod is rotatably articulated to the holder as a coupling device, a bridge is rotatably articulated to the rod at a distance from the holder, and the bridge is rotationally fixedly connected to the support foot device, wherein the support foot device is articulated to the base head body via the second pivot bearing, and wherein in particular a toggle lever mechanism is formed. This results in a structurally simple design with space-saving accommodation on the base head body. In particular, a toggle lever mechanism can be implemented, wherein a locking position for the parking position can then be achieved even when a dead center is exceeded.

[0037] It is particularly advantageous if the parking device is located on the underside of the floor head body, with at least one cleaning tool also located on the underside. This results in a space-saving design. The upper side of the floor head body can be used "freely" for additional components such as the blower unit, drive motor, and so on.

[0038] It is advantageous if a parking installation plane of the parking device is defined by at least three support points, and in particular by exactly three support points, with (i) the at least one caster and / or at least one support leg arranged on a holder for the at least one caster, and (ii) at least one support leg of the support leg device forming the support points. This allows for easy parking. It ensures stable storage of the floor cleaning machine in the parked position; the risk of tipping over is minimized.

[0039] It is particularly advantageous if a tilting device is arranged on the floor head body, by means of which the floor head can be supported relative to the floor during a tilting process. This results in easy operation for the operator. The effort required, especially for transport or moving the floor head into the parking position, can be minimized.

[0040] In particular, the parking device is designed such that, during a tipping operation, it automatically moves to the parking position via the tipping device, and in particular, the at least one caster and the support leg device move to the parking position. This results in simple operation. The parking position can be easily reached.

[0041] It is advantageous if the tipping device comprises a transport roller device, wherein the transport roller device enables the floor cleaning machine to be moved on a floor with the at least one cleaning tool spaced from the floor. The tipping device can further comprise at least one support wheel which defines a cleaning setup plane. For example, at the start of a tipping process, the floor head is then initially supported by the at least one support wheel until the transport roller device touches the ground upon further tipping. During this further tipping (by a slight angle), the transport roller device then touches the ground. During this process and possibly during a slight further tipping, the at least one roller then extends due to the pivotability on the first pivot bearing and the parking position is reached.The coupling mechanism carries the support device along, also reaching the parking position synchronously. By gently tilting back, the ground head can be placed on the ground via the parking mechanism, with one underside of the ground head then facing the ground.

[0042] It is advantageous if a transport rolling device is arranged in the base head body with at least one of the following: - during a cleaning process, the transport roller device is inactive and a transport roller or transport rollers of the transport roller device are spaced apart from the cleaning installation level; - the transport roller device is arranged in the region of a rear end of the ground head body, wherein the rear end faces away from a front end of the ground head body and the front end is related to a forward direction of travel of the ground head; - the transport roller device is located in the area of ​​a rear end of the floor head body, which faces an operator during a cleaning process; - the at least one roller is positioned below the floor head body during a cleaning process and the transport roller device is positioned in a region of a rear end of the floor head body in front of the floor head body.

[0043] The transport roller device then allows the floor cleaning machine as a whole to be transported in the manner of a sack barrow in a transport journey without touching the at least one cleaning tool to a storage location or a new location in a way that saves energy for an operator (and in particular to be pushed or pulled, with the operator using the holding rod device).

[0044] In one embodiment, at least one suction bar is arranged on a floor head body, and a blower device for generating a suction flow is provided, which is fluidly coupled to the at least one suction bar. A dirty solution can be sucked off a floor to be cleaned via the at least one suction bar, resulting in an effective cleaning effect.

[0045] In particular, it is provided that, in the parking position of the floor cleaning machine, the at least one suction bar is spaced away from the storage area. This "protects" the at least one suction bar when the floor cleaning machine is not in cleaning operation.

[0046] In a structurally advantageous embodiment, the at least one roller is arranged in a region of a front end of the base head body, wherein the front end is relative to a forward direction of travel. This results in optimized use of space on the base head body, and in particular on an underside of the base head body.

[0047] For the same reason, it is advantageous if the at least one roller is arranged in a central region of the floor head body, wherein the central region lies between the lateral side ends of the floor head body relative to a transverse axis. In particular, a "gusset" between two cleaning tools is used to accommodate the at least one roller.

[0048] A space-saving design is also achieved if the at least one support leg of the support leg device is arranged between the at least one cleaning tool and a rear end of the floor head body. This also creates a stable parking surface for the floor cleaning machine.

[0049] For the same reason, it is advantageous if the at least one support leg is arranged between the at least one cleaning tool and at least one suction bar on the floor head body. The parking device with the at least one support leg device can be arranged in a space-saving manner on the floor head body, and in particular on an underside of the floor head body.

[0050] It is particularly advantageous if the articulation device is associated with a locking device, which allows the position of the support rod device relative to the floor head to be fixed. This makes it easy for the operator to move to the parking position. By fixing the support rod device, the operator can apply targeted forces to the floor head, for example, to tilt it relative to the floor. Furthermore, a transport movement of the floor cleaning machine (without cleaning action) can then also be carried out easily.

[0051] In particular, the locking device is designed such that it fixes the holding rod device to the floor head in a position in which a longitudinal axis of the holding rod device is oriented substantially perpendicularly, in particular in a range between 80° and 100° to the cleaning installation plane.

[0052] In one embodiment, at least one support leg is arranged on a holder for the at least one swivel caster, which is pivotally fixed relative to the at least one caster during pivoting on the first pivot bearing. The at least one support leg, which is directly assigned to the at least one caster, allows support in the parked position to be achieved as an alternative to the caster or in addition to the at least one caster.

[0053] In one embodiment, a first cleaning tool with a first rotational axis is rotatably mounted on the floor head body, and a second cleaning tool with a second rotational axis is rotatably mounted on the floor head body. The first rotational axis and the second rotational axis are oriented transversely to the cleaning installation plane. In particular, the cleaning tools rotate in opposite directions to each other. This results in effective cleaning of the floor.

[0054] Furthermore, it is advantageous if the first cleaning tool and / or the second cleaning tool are inclined relative to the cleaning installation plane to generate propulsion. This makes the floor cleaning machine easy to operate for one operator, while also providing high maneuverability.

[0055] It is advantageous if the at least one roller is located on the floor head body between the first cleaning tool and the second cleaning tool, relative to a transverse axis of the floor head body. This results in optimized space utilization.

[0056] For the same reason, it is advantageous if the at least one support foot of the support foot device is positioned relative to a longitudinal axis of the floor head body between the cleaning tools and a rear end of the floor head body and in particular between the cleaning tools and at least one suction bar.

[0057] The invention is further based on the object of providing a floor cleaning machine of the type mentioned above which has a high degree of maneuverability.

[0058] This object is achieved according to the invention in the floor cleaning machine mentioned at the outset in that at least one first steering roller and one second steering roller are arranged on the floor head body for support during the cleaning process and in particular for defining the cleaning installation plane.

[0059] The first and second swivel casters support the floor head, and thus the floor cleaning machine, against the floor being cleaned during the cleaning process. It has been shown that high maneuverability is achieved when these support wheels are designed as swivel casters.

[0060] In particular, the first and second casters are spaced apart parallel to a transverse axis of the base head body. This results in optimized support with high maneuverability.

[0061] It is particularly provided that the first steering roller and the second steering roller are spaced from a parking installation plane of the floor head in the parking position of the parking device. This makes it possible to reach the parking position of the parking device in a simple and, in particular, automated manner. For example, it can be provided that a tilting movement of the floor head towards a floor is provided to reach the parking position of the parking device. The tilting movement occurs in particular backwards towards an operator who is properly positioned behind the floor cleaning machine. In particular, the floor head is then supported first on the floor to be cleaned via the steering rollers and then via a transport roller device. The at least one roller can be lifted far enough from the floor that it extends, in particular driven by a spring device.The support leg device is then also extended via the coupling device and brought into the parking position.

[0062] In particular, the first swivel caster and the second swivel caster are arranged between the at least one cleaning tool and a rear end of the floor head body relative to a longitudinal axis of the floor head body. This results in optimized support during cleaning operations with high maneuverability.

[0063] For the same reason, it is advantageous if the first swivel castor and the second swivel castor are arranged between at least one suction bar and a rear end of the floor head body. This means that the first swivel castor and the second swivel castor are positioned outside the dirty water during a cleaning process. During a normal cleaning process, cleaning fluid is applied to the floor to be cleaned in the area of ​​the at least one cleaning tool. Dirty water on the floor to be cleaned is vacuumed away from behind the at least one cleaning tool via the at least one suction bar. The first swivel castor and the second swivel castor are then positioned in an area that has already been vacuumed during a cleaning process and is therefore already cleaned with minimized wet exposure.

[0064] In a structurally advantageous embodiment, the first swivel caster and the second swivel caster are mounted on a bracket, which houses a transport roller assembly. This results in a space-saving design. In particular, it also makes it easy to provide a tilting device for the floor head (and the floor cleaning machine as a whole), in which the first swivel caster and the second swivel caster initially provide support on the floor at a small tilt angle, and then, as the tilt angle increases, the transport roller assembly takes over the support function.

[0065] It is advantageous if at least one of the following is provided: - a distance between a first center of a first cleaning tool and a second center of a second cleaning tool in a direction parallel to a transverse axis of the floor head body is at least approximately equal to a distance between the first steering roller and the second steering roller in this direction.

[0066] This provides optimized support during the cleaning process. The floor head can be designed to save space.

[0067] In particular, it is provided that a first pivot axis of the first swivel caster and a second pivot axis of the second swivel caster are each transverse and, in particular, perpendicular to the cleaning installation plane. This results in optimized maneuverability. The pivot axis bearing enables (passive) steering.

[0068] In one embodiment, a removable dirty fluid tank device, and in particular a blower device, is mounted on the floor head. This minimizes dirty fluid transport distances. To move the floor head into the parking position, only a relatively slight pivoting movement relative to the floor is necessary. This minimizes the risk of dirty fluid leaking from the dirty fluid tank device, even if it remains attached to the floor head during a corresponding pivoting movement.

[0069] It is particularly advantageous if the holding rod device is gimbal-mounted to the floor head by the joint device, in particular with at least one of the following: - the articulation device comprises a first articulation with a first pivot axis which is parallel to the cleaning installation plane; - the joint device comprises a second joint with a second pivot axis which is transverse and in particular perpendicular to a first pivot axis of the joint device.

[0070] This results in high maneuverability, especially when combined with swivel casters. It also allows for easy maneuvering under obstacles.

[0071] In one embodiment, a battery device and / or a tank device for cleaning fluid are located on the support rod device. This allows for optimized component placement. Furthermore, a low center of gravity for the floor cleaning machine results, making it easier for the operator to operate. The battery device is preferably located below the tank device.

[0072] Furthermore, it is advantageous to provide a cleaning fluid supply device, by means of which cleaning fluid can be supplied from a cleaning fluid tank to the at least one cleaning tool and / or to a floor to be cleaned. This allows for wet cleaning of the floor to be cleaned. Dirt can be removed in an optimized manner.

[0073] According to the invention, a method is provided for bringing a floor cleaning machine into a parking position of the type mentioned at the outset, in which the floor head is tilted relative to a storage surface, at least one castor, which is pivotably arranged on the floor head, goes into a parking position by being lifted off the storage surface, and a support foot device, by being coupled to the at least one castor and driven by the pivoting movement of the at least one castor, also goes into a parking position, and in which the floor head is supported in the parking position (i) on the at least one castor and / or on at least one support foot connected to a holder for the at least one castor, and (ii) by the support foot device on the storage surface, wherein the at least one cleaning tool is spaced from the storage surface in the parking position.

[0074] The method according to the invention has the advantages already explained in connection with the floor cleaning machine according to the invention.

[0075] In particular, the method according to the invention can be carried out with the floor cleaning machine according to the invention or the floor cleaning machine according to the invention can be operated with the method according to the invention.

[0076] It is preferably provided that in order to bring the floor cleaning machine into the parking position, the joint device is locked beforehand and thereby the holding rod device is fixed in its mobility relative to the floor head.

[0077] In particular, it is provided that when the floor head is tilted on the storage surface, the floor head is supported on the storage surface via a transport roller device, wherein the transport roller device is arranged on the floor head. For example, it is provided that when the floor head is tilted on the storage surface, support is initially provided via support rollers, which serve to support the cleaning process. By tilting accordingly through a small angle, the transport roller device can then be brought to the floor and further tilting is then possible. This makes it possible to achieve a sufficient tilt angle, which ensures that the at least one roller moves into the parking position and, in particular, that the transition is automated. Overall, this results in simple parking operation for a user of the floor cleaning machine.

[0078] In particular, it is provided that the at least one roller rolls along the floor to be cleaned during a cleaning process and, in particular, does not serve as a support for the floor head on the floor to be cleaned. This results in a structurally simple design.

[0079] According to the invention, a method for operating a floor cleaning machine of the type mentioned at the outset is further provided, in which the floor head is supported on the floor to be cleaned in a cleaning operation by the at least one cleaning tool and by at least one first steering roller and a second steering roller, wherein a first pivot axis of the first steering roller and a second pivot axis of the second steering roller are each oriented transversely to the floor.

[0080] It has been shown that this results in a high level of maneuverability of the floor cleaning machine with optimized support during a cleaning process.

[0081] The following description of preferred embodiments, taken in conjunction with the drawings, serves to further explain the invention. They show: Fig. 1 shows an embodiment of a floor cleaning machine according to the invention in a tilting position, wherein a parking device is in a parking position; Fig. 2 a partial view of the floor cleaning machine according to Fig. 1, wherein a floor head is shown in a cleaning operation; Fig. 3 the base head according to Fig. 2 in a perspective view; Fig. 4 the base head according to Fig. 2 in a bottom view according to direction A in Fig. 3, where Fig. 3 and Fig. 4 the parking facility is not activated; Fig. 5 a partial view of the soil head according to Fig. 2, with floor head elements removed and the parking device not activated; Fig. 6 the same view as Fig. 5 with cleaning tool removed; Fig. 7 a side view of an embodiment of a parking device as used in the floor head according to the Fig. 2 to 6 is inserted, in a non-activated parking position; Fig. 8 a perspective view of an embodiment of the parking facility according to Fig. 7 in non-activated park position; Fig. 9 a similar view to Fig. 5 (partial view of the ground head) in parking position of the ground head; Fig. 10 the same view as Fig. 10 with cleaning tool removed; Fig. 11 a similar view to Fig. 9, wherein the floor head is supported on a floor via a transport roller device and is tilted; Fig. 12 shows a further embodiment of a parking facility in perspective view; and Fig. 13 the parking facility according to Fig. 12 in side view.

[0082] An embodiment of a floor cleaning machine according to the invention, which in Fig. 1 and designated 10, and shown in partial representations in the other figures, is used particularly for cleaning hard floors. It comprises a floor head 12 and a support rod device 14. The support rod device 14 is movably and, in particular, pivotably connected to the floor head 12 via a joint device 16.

[0083] At least one cleaning tool is arranged on the base head 12. In the illustrated embodiment, a first cleaning tool 20 and a second cleaning tool 21 (cf. Fig. 3 and Fig. 4) arranged rotatably.

[0084] The holding rod device serves to guide the floor cleaning machine 10 over a (walkable) floor 22 both during a cleaning process (cf. Fig. 2) as well as during a transport operation of the floor cleaning machine 10 by a standing operator ( Fig. 1). The support rod assembly 14 allows the floor cleaning machine 10 to be maneuvered across the floor 22 and also pushed or pulled. The support rod assembly 14 has an operator side 24, which faces an operator standing behind the floor cleaning machine 10 (who holds the support rod assembly 14). Accordingly, the floor head 12 has an operator side 26, which also faces the operator during proper operation of the floor cleaning machine 10.

[0085] The floor head body 18 has a bottom side 28 and an upper side opposite the bottom side 28. During cleaning operation (or transport operation according to Fig. 1) the underside 28 faces the floor 22.

[0086] The floor head 12 is assigned a cleaning installation plane 32, which is defined by elements of the floor cleaning machine 10, on which the floor head 12 is supported on the floor 22 during a cleaning operation.

[0087] The cleaning installation plane 32 is defined by a respective effective surface 34 of the cleaning tools 20, 21. Furthermore, the cleaning installation plane 32 is defined by support wheels 36, 38, which, during cleaning operation of the floor cleaning machine 10, roll into contact with the floor 22 and thereby support the floor cleaning machine 10 on the floor 22. (The weight of the floor cleaning machine 10, as well as the cleaning tools 20, 21, rests on them.)

[0088] In one embodiment, a first steering roller 40 is provided as the support wheel 36 and a second steering roller 42 is provided as the support wheel 38.

[0089] If the floor 22 to be cleaned is flat and the floor head 12 is supported on it via the cleaning installation plane 32, then the cleaning installation plane 32 essentially coincides with a floor plane.

[0090] The base head body 18 has a front end 44. It has a rear end 46 facing away from the front end.

[0091] The floor head body 18 has a longitudinal axis 48 which extends between the front end 44 and the rear end 46. The cleaning installation plane 32 is parallel to this longitudinal axis 48. A forward direction of travel 50 of the floor head 12 during a cleaning operation ( Fig. 2) is parallel to this longitudinal axis 48 or runs in a direction from the rear end 46 to the front side 44.

[0092] The operator side 26 of the base head 12 is located at the rear end 46.

[0093] In principle, it is possible that a rear end of the floor head 12 does not coincide with the rear end 46 of the floor head body 18 because, for example, a corresponding device is arranged on the floor head body 18 on the operator side 26, which then forms the rear end 52.

[0094] The floor head body 18 further has a first lateral side end 54 and an opposite second lateral side end 56. Between the first lateral side end 54 and the second lateral side end 56 lies a transverse axis 58 of the floor head body 18, which is transverse and in particular perpendicular to the longitudinal axis 48. The transverse axis 58 is parallel to the cleaning installation plane 32.

[0095] The floor head 12 also has a height axis 60. This height axis 60 is perpendicular to the cleaning installation plane 32 and perpendicular to the longitudinal axis 48 and perpendicular to the transverse axis 58.

[0096] The first steering roller 40 is arranged on the base head body 18 in the region of the rear end 46. The second steering roller 42 is also arranged in the region of the rear end 46. The first steering roller 40 and the second steering roller 42 are spaced apart from one another in a spacing direction parallel to the transverse axis 58.

[0097] The floor head 12 can be assigned a center plane 60, which is located centrally between the first lateral side end 54 and the second lateral side end 56 and is perpendicular to the cleaning installation plane 32. The center plane 60 divides the floor head 12 into two sides. The first swivel caster 40 is located on one side of the center plane 60, and the second swivel caster 42 is located on the other side of the center plane 60.

[0098] The first steering roller 40 and the second steering roller 42 have a roller axis which is parallel to the cleaning installation plane 32.

[0099] When the floor head 12 is in the forward travel direction 50, the roller axes of the first steering roller 40 and the second steering roller 42 are coaxial with each other and parallel to the transverse axis 58 and perpendicular to the forward travel direction 50.

[0100] The first steering roller 40 is pivotable about a first pivot axis 62 (“steering axis”). The second steering roller 42 is pivotable about a second pivot axis 64 ( Fig. 4). The first pivot axis 62 is perpendicular to the roller axis of the first swivel caster 40. The second pivot axis 64 is perpendicular to the roller axis of the second swivel caster 42. The first pivot axis 62 and the second pivot axis 64 are transverse and, in particular, perpendicular to the cleaning installation plane 32.

[0101] The first pivot axis 62 and the second pivot axis 64 are oriented at least approximately parallel to each other. They define the (passive) steerability of the caster wheels 40, 42.

[0102] In the bottom view according to Fig. 4, the first pivot axis 62 and the second pivot axis 64 are perpendicular to the plane of the drawing.

[0103] The first swivel caster 40 is rotatable about the first pivot axis 62, and the second swivel caster 42 is rotatable about the second pivot axis 64. Designing the support wheels 36, 38 as swivel casters with steerability (with an additional axis of movement with the pivot axis 62 or 64) results in improved maneuverability of the floor cleaning machine 10 during a cleaning process on the floor 22 to be cleaned.

[0104] On the floor head body 18 are a first disc holder 66, which holds the first cleaning tool 20, and a second disc holder 68, which holds the second cleaning tool 21 ( Fig. 4). The first disc holder 66 is mounted on the floor head body 18 for rotation about a first axis of rotation 70. The second disc holder 68 is mounted on the floor head body 18 for rotation about a second axis of rotation 72. The first axis of rotation 70 and the second axis of rotation 72 are oriented transversely to the cleaning installation plane 32. In one embodiment, they are oriented perpendicular to the cleaning installation plane 32.

[0105] In one embodiment, the first rotational axis 70 and the second rotational axis 72 are parallel to each other. In principle, they can also form a small, acute angle to each other.

[0106] The first cleaning tool 20 is held on the first disc holder 66 and the second cleaning tool 21 is held on the second disc holder 68 in a rotationally fixed manner, for example via a bayonet connection.

[0107] It is intended that the first cleaning tool 20 and the second cleaning tool 21 rotate in opposite directions to each other during a cleaning operation of the floor cleaning machine 10.

[0108] A drive motor 74 is arranged on the floor head body 18 and in particular a single drive motor 74 is positioned for driving both the first cleaning tool and the second cleaning tool 21.

[0109] In one embodiment, this drive motor 74 is arranged vertically with a motor axis which is oriented transversely and in particular perpendicularly to the cleaning installation plane 32.

[0110] A torque transmission device transmits the torque of the drive motor 74 to the first disc holder 66 and the second disc holder 68. The torque transmission device is positioned on the base head body 18, in particular in a gear housing (not visible in the drawings).

[0111] In one embodiment, the first cleaning tool 20 and the second cleaning tool 21 are each inclined relative to the cleaning installation plane 32 with respect to their effective surface 34. A typical angle for this inclination is in the range between 1° and 10°, and in particular between 2° and 6°. This allows propulsion to be generated, with the inclination being such that the propulsion acts in the forward direction of travel 50.

[0112] The inclination of the cleaning tools 20, 21 can be achieved, for example, by appropriate arrangement of the disc holders 66, 68.

[0113] In an alternative embodiment, the respective cleaning tool 20, 21 is mounted on the associated disk holder 66, 68 with axial and radial play, and a pressure element is positioned to effect an inclination. In this embodiment, in particular, the respective cleaning tool 20, 21 performs a type of precessional movement during rotation, in which a corresponding rotation axis of the cleaning tool 20, 21 revolves on an (imaginary) conical surface, wherein the respective rotation axis 70, 72 is a conical axis of the conical surface, and a conical angle of the conical surface determines the angle of inclination to the cleaning installation plane 32.

[0114] In relation to the central plane 60, the first cleaning tool 20 is located on one side of the base head body 18 relative to this central plane 60 and the second cleaning tool 21 is located on the other side relative to this central plane 60 (cf. Fig. 4).

[0115] In particular, the cleaning tools 20, 21 are arranged on the base head 12 such that they reach up to the front end 44 or even slightly protrude therefrom, and advantageously also reach up to the first lateral side 54 or second lateral side 56 or even slightly extend beyond them. This enables cleaning close to the edge.

[0116] The first and second cleaning tools 20, 21 each have a holder 76 (cf. Fig. 5), on which an effective area 78 for the floor 22 is defined. The cleaning tool 20, 21 is fixed to the respective disc holder 66, 68 by the holder 76. The holder 76 is, for example, a circular disc.

[0117] The active area 78 acts mechanically on the floor 22 during a cleaning process. It comprises the active surface 34. In one embodiment, the cleaning tools 20, 21 are designed as grinding discs, and the active area is formed by bristle bundles 80. It is also possible, for example, for the active area 78 to be formed by textile material, or for the active area to comprise bristle bundles and textile material.

[0118] When the active area 78 is formed from bristle bundles 80, the base head body 18 is a brush deck.

[0119] The cleaning tools 20, 21 are arranged on the underside 28 of the floor head body 18 and are thus located between the underside 28 and the cleaning installation plane 32. The drive motor 74 and also the torque transmission device are arranged on the upper side 30 of the floor head body 18.

[0120] A suction bar 82 is also located on the base head body 18, particularly on the underside 28 of the base head body 18. The suction bar 82 extends particularly between the first lateral side 54 and the second lateral side 56.

[0121] The suction bar 82 comprises a contact area 84 on the floor 22 to be cleaned. The contact area 84 is made, in particular, of an elastic material. The contact area 84 surrounds a space 86.

[0122] The contact area 84 is provided with recesses, in particular towards the cleaning tools 20, 21, so that dirty fluid can reach the space 86 at the bottom 22.

[0123] The suction bar 82 comprises a connection 88 connected to the space 86, via which the space 86 (and thus the suction bar 82) is fluidly connected to a blower device 90 (in Fig. 1). The blower device 90 is located in particular on the floor head body 18 and on its upper side 30 in the region of the rear end 46 or in the region of the second lateral side 56. The blower device 90 generates a suction flow during cleaning operation of the floor cleaning machine 10. The suction flow acts on the space 86, and a dirty fluid can be sucked from the floor 22. Accordingly, sucked-off dirty fluid is coupled into a dirty fluid tank device 92 (cf. Fig. 1), which is removably mounted on the upper side 30 of the base head body 18.

[0124] A contaminated fluid is defined as a flowable, contaminated medium, particularly one that contains a liquid. In principle, the contaminated fluid can also be dry.

[0125] Rollers 94 are assigned to the suction bar 82, which are located particularly in the area of ​​the lateral side ends 54, 56. The rollers 94 (additionally) support the suction bar 82 on the floor 22 to be cleaned.

[0126] In one embodiment, the suction bar 82 is positioned between the cleaning tools 20, 21 and the support wheels 36, 38 (the casters 40, 42) relative to the longitudinal axis 48. During a cleaning process on a floor 22 to be cleaned, the casters 40, 42 are thus located outside a "wet area," and when the floor head 12 moves in the forward direction 50 over a specific area of ​​the floor 22, the casters 40, 42 reach an area that has already been cleaned and vacuumed. This minimizes the exposure of the casters 40, 42 to dirt and liquid.

[0127] In one embodiment (see Fig. 4) The floor head body 18 is convex or angled at the first lateral side end 54 and the second lateral side end 56, respectively. The floor head body 18 has its greatest width in a region where the suction bar 82 ends. From the front end 44 to this region, the width of the floor head body 18 increases in a direction parallel to the transverse axis 58. From this region to the rear end 46, the width decreases.

[0128] In particular, it is provided that a width of the dirty fluid tank device 92, which is positioned on the upper side 30 of the floor head body 18, is smaller, at least in some areas, than the corresponding width of the floor head body 18. As a result, the floor head body 18 has an edge region 96, particularly above the cleaning tools 20, 21, at which the dirty fluid tank device 92 is set back relative to the respective lateral side end 54, 56. This results in improved accessibility.

[0129] A transport roller device 98 is located on the base head body 18 in the region of the rear end 46. The transport roller device 98 comprises a first transport roller 100 (cf. Fig. 3) and a second transport roller 102. The first transport roller 100 and the second transport roller 102 are spaced apart from each other in the transverse axis 58.

[0130] The first transport roller 100 and the second transport roller 102 have a common roller axis 104 about which they are rotatable. The roller axis 104 is parallel to the cleaning installation plane 32. It is parallel to the transverse axis 58. It is transverse and in particular perpendicular to the longitudinal axis 48 or the forward travel direction 50. It is transverse to the rotation axes 70, 72. In one embodiment, it is perpendicular to the rotation axes 70, 72.

[0131] The transport roller assembly 98 is positioned in front of an end region of the floor head body 18 on the operator side 26. The steering rollers 40, 42 are positioned on the underside 28 of the floor head 12. During cleaning operation, they are located between the floor 22 and the underside 28 of the floor head body 18. The transport rollers 100, 102 are positioned adjacent to the floor head body 18.

[0132] During cleaning operation, the transport rollers 100, 102 are not effective and are spaced apart from the cleaning installation level 32 (cf. Fig. 2). They have no function in a cleaning business.

[0133] The transport rollers 100 and 102 are located on different sides relative to the center plane 60. They face the operator side 26.

[0134] By tilting the floor cleaning machine 10 as a whole ( Fig. 1) the transport rollers 100, 102 can be brought into contact with the floor 22 as a support surface, whereby the cleaning tools 20, 21 are lifted from the floor 22 ( Fig. 1).

[0135] The floor cleaning machine 10 can be further tilted at the floor head 12 via the transport roller device 98, with the floor cleaning machine 10 then being supported on the floor 22 by the transport roller device 98. In this sense, the transport roller device 98 forms a tilting device 106, which enables the floor head 12 to be supported on the floor 22 during a tilting process.

[0136] In particular, it is provided that in an initial stage of the tilting movement, in which the transport rollers 100, 102 are not yet in contact with the floor 22, the floor head is supported on the floor via the steering rollers 40, 42. These then form the tilting device in this initial stage of the tilting movement. Overall, the tilting device 106 is thus formed by the steering rollers 40, 42 and the transport roller device 98.

[0137] If the floor cleaning machine 10 and thus the floor head 12 have been tilted on the floor 22 to such an extent that, apart from the transport rollers 100, 102, no further elements of the floor head 12 touch the floor 22, then the floor cleaning machine 10 can be easily moved on the floor via the transport roller device 98 during a transport process, whereby no cleaning takes place due to the raised cleaning tools 20, 21.

[0138] The floor cleaning machine 10 can then be moved on the floor 22, in particular in the manner of a sack barrow, via the transport roller device 98.

[0139] In particular, it is provided that the mobility of the support rod device 14 relative to the floor head 12 can be locked to the floor head 12 by a locking device 99. If a transport journey is planned, an operator locks the support rod device 14 relative to the floor head 12, so that the mobility of the support rod device 14 relative to the floor head 12 is no longer present. The operator can then pivot the floor cleaning machine 10 as a whole backward (toward the operator) until the transport roller device 98 touches the floor 22. Upon further pivoting, the floor cleaning machine 10 is supported on the floor 22 by the transport roller device 98, as mentioned above.

[0140] In one embodiment, a handle 101 is provided, which is located on the support rod device 14. This handle 101 is connected via a tension element (such as a cable) to the locking device 99, which is located in the region of the joint device 16. Using the handle 101, an operator can move the locking device into a locked position or release the locked position.

[0141] In one embodiment, the first steering roller 40 and the second steering roller 42 are arranged between the first transport roller 100 and the second transport roller 102 (cf. Fig. 4). In one embodiment, the first steering roller 40 and the second steering roller 42 are arranged on the same holder on which the transport roller device 98 is located. This holder is part of the floor head body 18 or is fixed to the floor head body 18.

[0142] A first connecting line 108 between a center of the first cleaning tool 20 and the first caster 40 is oriented transversely and in particular perpendicularly to the transverse axis 58. It is in particular oriented at least approximately parallel to the longitudinal axis 48. (The first connecting line 108 is an imaginary line.)

[0143] Accordingly, a second connecting line 110 is oriented between a second center of the second cleaning tool 21 and the second steering roller 42. The first connecting line 108 and the second connecting line 110 are at least approximately parallel.

[0144] The first center of the first cleaning tool 20 is a geometric center and in particular a penetration point of the first rotation axis 70. The same applies to the second center of the second cleaning tool 21.

[0145] This arrangement, in particular of at least approximately parallel connecting lines 108, 110, results in an effective support of the floor head 12 on a floor 22 to be cleaned with high maneuverability during a cleaning operation.

[0146] By means of the connecting lines 108, 110 and the connecting lines arranged perpendicular thereto, each between the first center and the second center and the first steering roller 40 and the second steering roller 42, wherein these connecting lines are then each parallel to the transverse axis 58, an imaginary rectangle or trapezoid with an approximately rectangular shape is formed. The cleaning tools 20, 21 and the steering rollers 40, 42 are located at the corners of this rectangle or trapezoid with their centers. In the illustrated embodiment, the steering rollers 40, 42 are located at these corners with their respective outer sides, which face the respective lateral side ends 74, 76, particularly with respect to the connecting lines 108, 110.

[0147] Part of the suction bar 82 lies within this rectangle or trapezoid. The transport rollers 100, 102 lie outside this rectangle or trapezoid.

[0148] In Fig. 4 the rectangle or trapezoid is labeled 112.

[0149] A parking device designated as a whole by 114 is provided. The parking device 114 is inactive during a cleaning process of the floor 22 ( Fig. 2 to 8). The parking device 114 can be moved into a parking position 116 ( Fig. 9 to 11), whereby the floor cleaning machine 10 with its floor head 12 can be brought into a parking position, in which the floor cleaning machine 10 can be parked on a storage surface via the floor head 12, and in which the cleaning tools 20, 21 are spaced from the storage surface and are therefore not subjected to mechanical stress.

[0150] The parking device 114 is arranged on the floor head body 18 and in particular arranged on the underside 28 of the floor head body 18.

[0151] The parking device 114 comprises a roller 118. The roller 118 is arranged on a holder 120. The holder 120 is hinged to the base head body 18 and thereby to its underside 28 via a first pivot bearing 122.

[0152] The first pivot bearing 122 has a first pivot axis 124 (cf. Fig. 4). The first pivot axis 124 is parallel to the cleaning installation plane 32. It is transverse and in particular perpendicular to the forward travel direction 50. It is transverse and in particular perpendicular to the transverse axis 58. It is parallel to the longitudinal axis 58. It is oriented transversely to the rotation axes 70, 72.

[0153] The roller 118 has a roller axis 126. This roller axis 126 is parallel to the first pivot axis 124.

[0154] The roller axis 126 is in particular parallel to the roller axis 104 of the transport roller device 98.

[0155] The first pivot bearing 122 and thus also the roller 118 are mounted in the area of ​​the front end 44 of the floor head body 18 on the underside 28 of the floor head body 18. It is located on the center plane 60. It is thus positioned between the first cleaning tool 20 and the second cleaning tool 21 with respect to the transverse axis 58 (see Fig. 4).

[0156] A spring device 128 is assigned to the first pivot bearing 122. The spring force of the spring device 128 is such that it tends to push the holder 120 with the roller 118 away from the underside 28 in the direction of the cleaning installation plane 32.

[0157] During a cleaning process of the floor cleaning machine 10, in which the floor head 12 is placed on the floor 22 via the cleaning installation level 32 (cf. Fig. 2), the roller 118 lies on the cleaning installation level 32. It is pressed against the floor 22 by the spring device 128.

[0158] In one embodiment, it is provided that the roller 118 itself does not have a supporting function for the floor head 12 on the floor 22 during cleaning operation, i.e., it does not perform any "weight support" on the floor 22. During cleaning operation, the roller 118 runs, so to speak, freely on the floor 22 and rolls thereon about the roller axis 126. The spring device 128 mounts the roller 118 with its holder 120 in a floating manner relative to the first pivot axis 124.

[0159] When the floor head 12 is lifted from the floor 22, ie when the cleaning installation plane 32 is lifted from the floor 22 (see for example Fig. 1), then the floor 22 is no longer present as a stop for the spring force of the spring device 128 and the spring force of the spring device 118 brings the holder 120 with the roller 118 into the parking position 116 ( Fig. 9 to 11).

[0160] The parking device 114 further comprises a support leg device 130. The support leg device 130 is pivotally mounted on the base head body 18 via a second pivot bearing 132, thereby being arranged on its underside 28. A second pivot axis 134 is parallel to the first pivot axis 124. The second pivot bearing 132 is spaced apart from the first pivot bearing 122.

[0161] In one embodiment, the support foot device 130 is positioned on the floor head body 18 between the cleaning tools 20, 21 and the suction bar 82 relative to the longitudinal axis 48.

[0162] In one embodiment, the second pivot bearing 132 is formed by spaced holders 136a, 136b, on which a shaft 138 is pivotally mounted about the second pivot axis 134 (see, for example, Fig. 8).

[0163] The support leg assembly 130 comprises at least one support leg 140. In one embodiment, it comprises a first support leg 140a and a spaced-apart support leg 140b. The support legs 140a, 140b are rotationally fixedly connected to the shaft 138. They are pivotable about the second pivot axis 134 via the pivotability of the shaft 138.

[0164] In the parking position 116 (see for example Fig. 9) the support feet 140a, 140b are pivoted relative to the floor head body 18 in such a way that the floor head 12 can be supported thereon with the cleaning tools 20, 21 spaced from the corresponding storage surface.

[0165] The support feet 140a, 140b are positioned on the underside 28 of the floor head body 18 or lie between the underside 18 and the cleaning installation level 32. They are each positioned between the cleaning tools 20, 21 and the suction bar 82.

[0166] In one embodiment, the first support foot 140a is associated with the first cleaning tool 20, and the second support foot 140b is associated with the second cleaning tool 21. The support foot 140a is located on one side of the floor head body 18 relative to the center plane 60, and the support foot 140b is located on the other side.

[0167] The parking device 114 further comprises a coupling device 142, which mechanically couples the roller 118, and in particular the holder 120, to the support foot device 130. This allows a movement at the first pivot bearing 122, which moves the roller 118 into its parking position 116, to be transmitted to the support foot device 130, and the support feet 140 can thereby be moved into their parking position 116, in particular driven by the spring device.

[0168] The coupling device 142 is positioned in particular between the first cleaning tool 20 and the second cleaning tool 21 on the underside 28 of the floor head body 18 and thus positioned on the center plane 60.

[0169] In one embodiment, the coupling device 142 is formed by a rod 144. This rod 144 is connected to the holder 120 via a first pivot joint 146. The first pivot joint 146 has a first axis of rotation 148, which is parallel to the first pivot axis 124.

[0170] The first rotation axis 148 is located above the roller axis 126 with respect to the height axis 52.

[0171] A bridge 150 is hinged to the rod 144 at an end opposite the end at which the first pivot joint 146 is located, via a second pivot joint 152. The second pivot joint 152 has a second pivot axis 154, which is parallel to the second pivot axis 134 (and parallel to the first pivot axis 124).

[0172] The bridge 150 is connected to the shaft 138 of the support foot device 130 in a rotationally fixed manner.

[0173] The parking device 114 is designed as a toggle lever mechanism, in which the holder 120 is pivotally mounted on the base head body 18 about the first pivot axis 124 (via the first pivot bearing 122). The rod 144 is rotatably mounted on the holder 120 (with the first pivot joint 146) about the first pivot axis 148.

[0174] The bridge 150, which is connected to the shaft 138 in a rotationally fixed manner, is pivotally connected to the rod 144 via the second pivot bearing 152 with the second axis of rotation 154, spaced from the first pivot joint 146.

[0175] The shaft 138, in turn, is connected to the base head body 18 via the second pivot bearing 132 so as to be pivotable about the second pivot axis 134.

[0176] When the roller 118 moves into the parking position 116, which is driven by the spring device 128, the rod 144 undergoes a translational movement with rotation about the first rotation axis 148. This is transmitted to the shaft 138 via the bridge 150. This leads to a rotation of the shaft 138 about the second pivot axis 134, which brings the support feet 140 into the parking position 166.

[0177] The parking device 114 provides a parking level 156 in the parking position 116 ( Fig. 9 to 11). The parking installation level 156 is formed by corresponding contact surfaces of the roller 118 and the support feet 140a, 140b.

[0178] In the parking position 116 of the parking device 114, the floor head 12 can be placed on a storage surface (such as a floor 22), wherein, in the case of a level storage surface, the parking installation plane 156 coincides with a plane of the storage surface.

[0179] If the floor head 12 is positioned above the parking installation level 156 on a storage area, then the cleaning tool 20 and the cleaning tool 21 are spaced apart from the parking installation level 156 and thus from the storage area (cf. Fig. 9).

[0180] The parking setup level 156 is only defined in the parking position 116.

[0181] In one embodiment, the parking installation plane 156 is defined by three support points, which are predetermined by the support feet 140a, 140b and by the roller 118.

[0182] In the described embodiment, the roller 118 forms a support point in the parking position 116. It is also possible that a support foot 157 is located on the holder 120 (in Fig. 7 with broken lines). When the holder 120 pivots out, the support foot 157 pivots out with it. The support foot 157 then forms a support point in the parking position 116 instead of the roller 118.

[0183] In this embodiment, the support foot 127 is coupled to the roller 118 in a rotationally fixed manner with respect to the first pivot bearing 122 (with respect to the first pivot axis 124).

[0184] The parking installation plane 156 is (when the floor head 12 is in the parking position, which is achieved by the parking position 116 of the parking device 114) at least approximately parallel to the cleaning installation plane 32. In the parking position, the cleaning installation plane is spaced apart from the parking installation plane 156 and accordingly from a storage area for the floor cleaning machine 10.

[0185] In one embodiment, the support rod device 14 is articulated to the floor head body 18 by the joint device 16. The joint device 16 comprises a first joint 158 ​​with a first pivot axis 160. The first joint 158 ​​is connected directly or via a corresponding first holder to the floor head body 18 at its upper side 30. In the view according to Fig. 1, the first joint 158 ​​is laterally concealed by the dirty fluid tank device 92. The dirty fluid tank device has, in particular, a cutout with which it can be displaced over the joint device 16 and, in particular, the first joint 158.

[0186] A second joint 162 with a second pivot axis 164 is located directly or via a holder on the first joint 158 ​​of the joint device 16. The second pivot axis 164 is oriented transversely and in particular perpendicularly to the first pivot axis 160.

[0187] The first pivot axis 160 is parallel to the cleaning installation plane 32. The first pivot axis 160 can be used to vary the distance between the operator side 26 and the cleaning installation plane 32 and thus to the floor 22.

[0188] In conjunction with the second joint 162, good maneuverability is achieved.

[0189] A support rod 166 of the support rod device 14 is hinged to the joint device 16. This support rod 166 thus forms a kind of backbone for the floor cleaning machine 10.

[0190] A housing device 168 is located on the support rod 166. The housing device 168 accommodates a battery device 170.

[0191] A removable tank device 172 for cleaning fluid is also located on the housing device 168. The cleaning fluid is, in particular, pure water, which may optionally contain a surfactant cleaning agent.

[0192] In one embodiment, the battery device 170 and the tank device 17 are located on the same side of the support rod device 14, which is facing away from the operator side 24.

[0193] A handlebar 174 is arranged on the support rod 166 at a proximal end 166. This handlebar can be grasped by an operator with both hands.

[0194] In particular, a display / operating device 176 is arranged in the area of ​​the handlebar 174.

[0195] In one embodiment, the support rod 166 is hinged distally to the hinge device 16 and the housing device 168 is held on the support rod 166 with its function as a "backbone".

[0196] In an alternative embodiment, a housing is hinged to the hinge device 16 and a corresponding holding rod with handlebar is held on the housing.

[0197] The floor cleaning machine 10 comprises a supply device 178 for cleaning liquid, via which cleaning liquid can be supplied from the tank device 172 to the floor head 12 and, in particular, to the cleaning tools 20, 21 in order to enable wet cleaning of the floor 22.

[0198] In one embodiment, cleaning fluid is supplied from the tank device for cleaning fluid to the base head 12 by gravity. In particular, the supply is controlled by a solenoid valve.

[0199] In an alternative embodiment, a pump is provided for supplying cleaning fluid from the tank device 172 to the base head 12.

[0200] The floor cleaning machine 10 according to the invention functions as follows: During a cleaning operation for a floor 22, the parking device 114 is not active. The support feet 140 are pivoted about the second pivot axis 134 on the second pivot bearing 132 such that they do not touch the cleaning installation plane 32 ( Fig. 2 to 7).

[0201] The floor head 12 is supported by the castors 40, 42 and the cleaning tools 20, 21 are guided over the floor 22 to be cleaned.

[0202] The inclination of the cleaning tools 20, 21 relative to the floor 22 generates propulsion. An operator can maneuver the floor cleaning machine 10 accordingly via the cardan joint device 16 (without being locked by the locking device 99).

[0203] It is intended that the roller 118 runs freely, so to speak, and is supported on the base 22 and rotates around the roller axis 126. However, it has no further supporting function for the base head 12.

[0204] The spring device 128 presses the roller 118 against the floor 22.

[0205] The transport roller device 98 is spaced from the cleaning installation level 32.

[0206] For a cleaning operation, the cleaning tools 20, 21 rotate in opposite directions and act mechanically on the floor 22 to be cleaned. Cleaning fluid is supplied to the floor to be cleaned directly and preferably indirectly via the supply device 178. In particular, the cleaning fluid is supplied to the cleaning tools 20, 21, from where it reaches the floor 22.

[0207] The rotating cleaning tools 20, 21 loosen dirt from the floor. This is assisted by the cleaning fluid.

[0208] Dirty fluid is removed via the suction bar 82, which is subjected to the suction flow of the blower device 90, and coupled into the dirty fluid tank device 92. The dirty fluid tank device 92 is removable from the floor head 12 and can then be emptied and cleaned accordingly.

[0209] In order to be able to transport the floor cleaning machine 10 on the floor 22 without a cleaning process, the joint device 16 is first locked via the locking device 99 in such a way that the holding rod device 14 can no longer move relative to the floor head 12.

[0210] In particular, the locking device 99 provides for locking of the joint device 16 relative to the floor head 12 in a position of the support rod device 14 in which the support rod device 14 is oriented with a longitudinal axis at least approximately perpendicular to the cleaning installation plane 32 and is fixed to the floor head 12, for example, in an angular range between 80° and 100° relative to the cleaning installation plane 32. In particular, there is no pivoting of the support rod device 14 about the second pivot axis 164.

[0211] In one embodiment, the floor cleaning machine 10 is tilted backwards towards the operator (see Fig. 1) until the transport roller device 98 first touches the floor 22. Until the transport roller device 98 touches the floor 22, the floor head 12 and the casters 40, 42 are supported on the floor 22 during this tilting movement. A further tilting movement can then be performed, with the floor head 12 supported on the transport device 98 on the floor 22.

[0212] By tilting the base head 12, the roller 118 is released to a certain extent and the spring device 128 pushes it into the parking position 116 ( Fig. 1, Fig. 9). By tilting and lifting the roller 118 from the floor 22, this parking position 116 for the roller 118 is automatically reached. The roller 118 is brought into the parking position 116 via the holder 120 by pivoting about the first pivot axis 124. The parking position 116 is an outer position, which is achieved by a stop or by the design of the parking device 114 with its individual components.

[0213] In principle, the parking position 116 is also reached when the floor cleaning machine 10 is lifted as a whole from the floor 22. The described tilting movement requires less effort from the operator.

[0214] The coupling device 142 transmits movement, with an “initial movement” being effected by the pivoting of the holder 120 with the roller 118, to the support foot device 130. The shaft 138 rotates driven by the spring device 128 and mediates via the coupling device 142 and the second pivot axis 134 and brings the support feet 140 into the parking position 116. The parking installation plane 156 is then defined ( Fig. 9). When the floor head 12 is pivoted back, the floor cleaning machine 10 can be placed on a storage surface at the floor head 12 by means of the parking level 126, whereby the cleaning tools 20, 21 no longer touch the storage surface.

[0215] In particular, in the parking position, the transport roller device 98 is again spaced apart from the storage area (to the parking installation level 156) (cf. Fig. 9).

[0216] For cleaning-free transport of the floor cleaning machine 10 (cf. Fig. 10), this is tilted (with the articulation device 16 locked) until the transport roller device 98 rests on the floor 22. The floor cleaning machine 10 can then be moved across the floor in the manner of a sack barrow, tilted to the floor 22, for example, to a new location or to a storage location, using the transport roller device 98.

[0217] In one embodiment, the parking device 114 is designed as a toggle lever mechanism, in which in particular the parking position 116 of the roller 118 lies beyond a dead center of the corresponding toggle lever mechanism and thereby a locking effect is achieved.

[0218] In order to release the parking position, an operator can release this locking by exerting appropriate force and “pushing back” the holder 120 with the roller 118 on this side of the dead center.

[0219] In the solution according to the invention, the cleaning installation plane 32 is defined by the cleaning tools 20, 21 and the casters 40, 42. The casters 40, 42, together with the cleaning tools 20, 21, rest on the rectangle or trapezoid 112. The suction bar 82 is located between the casters 40, 42 and the cleaning tools 20, 21. This results in effective support with a large support surface and thus optimized weight distribution. This, in turn, results in a good cleaning effect of the floor cleaning machine 10 for the floor 22 to be cleaned.

[0220] The (passive) steerability of the steering rollers 40, 42 about the pivot axes 62 and 64, respectively, results in good maneuverability of the floor cleaning machine 10 during a cleaning process.

[0221] In the embodiment of the parking device described above, the parking installation plane 156 is also defined by the roller 118, ie in the parking position of the floor head 12, the latter is also supported on the parking surface via the roller 118.

[0222] In a further embodiment of a parking facility 180 ( Fig. 12, Fig. 13) a support foot device 181 is provided, which is positioned in the region of the front end 44 of the floor head body 18.

[0223] A roller 182 is mounted on the corresponding shaft 138 of the support foot device 130 via a holder 184. The shaft 138 is mounted on the floor head body 18 via the pivot bearing 132, wherein in this case the pivot bearing 132 is a first pivot bearing.

[0224] The holder 184 is particularly fixedly mounted on the shaft 138.

[0225] By applying force to the roller 182, the shaft 138 of the parking device 180 can be rotated about the pivot axis 134. The pivot axis 134 is then a first pivot axis.

[0226] A support leg 140 can then be folded out to define the parking level 156. The roller 182 is folded away in such a way that the parking level 156 ( Fig. 13) is no longer touched.

[0227] In the area of ​​the front end 44, the support leg device 181 with support leg 188 is arranged via a pivot bearing 186 (second pivot bearing 186), wherein a coupling device 190 is rotatably connected to the support leg 188. A bridge 192 is non-rotatably connected to the shaft 138 and is articulated to the coupling device 190 at an end opposite the support leg 188.

[0228] The coupling device 190 transmits the movement (rotation) of the shaft 138, which is driven by a corresponding movement of the roller 182 on the floor 22, to the support foot 188. This then pivots out into the parking position to the parking installation plane 156 ( Fig. 13) to be defined.

[0229] In the parking device 180, the roller 182 is arranged behind the cleaning tools 20, 21. The support foot 188 is arranged in the region of a front end 44 between the cleaning tools 20, 21. The pivotability of the roller 182 relative to the floor head body 18 is achieved via the shaft 138 with the pivot bearing 132. List of reference symbols 10 floor cleaning machines 12 bottom head 14 Holding rod device 16 Joint device 18 floor head body 20 first cleaning tool 21 second cleaning tool 22 Floor 24 Operator side 26 Operator side 28 Bottom 30 Top 32 Cleaning installation level 34 effective area 36 support wheel 38 support wheel 40 first swivel castor 42 second swivel castor 44 front end 46 rear end 48 Longitudinal axis 50 Forward direction 52 rear end 54 first lateral page end 56 second lateral side end 58 Transverse axis 60 Middle Level 62 first swivel axis 64 second swivel axis 66 first disc holder 68 second disc holder 70 first axis of rotation 72 second axis of rotation 74 Drive motor 76 holders 78 Effective range 80 bundles of bristles 82 suction beams 84 Investment area 86 Room 88 connection 90 Blower device 92 Dirty fluid tank facility 94 roll 96 Marginal area 98 Transport roller device 99 locking device 100 first transport roller 101 Handle 102 second transport roller 104 roller axle 106 Tilting device 108 first connecting line 110 second connecting line 112 Rectangle, Trapezoid 114 Parking facility 116 Parking position 118 roller 120 holders 122 first pivot bearing 124 first swivel axis 126 roller axle 128 Spring device 130 Support leg device 132 second pivot bearing 134 second swivel axis 136a Holder 136b Holder 138 Wave 140 support foot 140a first support leg 140b second support leg 142 Coupling device 144 rod 146 first swivel joint 148 first axis of rotation 150 Bridge 152 second swivel joint 154 second axis of rotation 156 Parking Level 157 Support foot 158 first joint 160 first swivel axis 162 second joint 164 second swivel axis 166 Holding rod 168 Housing equipment 170 Battery device 172 Tank facility for cleaning fluid 174 handlebars 176 Display / operating device 178 Feeding device 180 parking facilities 182 roller 184 holders 186 second pivot bearing 188 Support foot 190 Coupling device 192 Bridge QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3 031 378 A1

[0004] EP 2 814 371 B1

[0005] WO 2022 / 129900 A1

[0006] EP 3 742 950 B1

[0007]

Claims

[1] Floor cleaning machine, comprising a floor head (12) with a floor head body (18), at least one rotatable cleaning tool (20, 21) which is arranged on the floor head (12), wherein the floor head (12) is assigned a cleaning installation plane (32) for a floor (22) to be cleaned, a holding rod device (14) which is articulated to the floor head (12) via a joint device (16), and a parking device (114; 180) which is arranged on the floor head (12) and via which the floor cleaning machine can be parked on a parking surface in a parking position such that the at least one cleaning tool (20, 21) is spaced from the parking surface, characterized bythat the parking device (114; 180) has at least one roller (118; 182), which is pivotably arranged on the floor head body (18) via a first pivot bearing (122; 132), that the parking device (114; 180) has a support foot device (130; 181) with at least one support foot (140), which is pivotably arranged on the floor head body (18) via a second pivot bearing (132; 186), wherein the second pivot bearing (132; 186) is spaced from the first pivot bearing (120; 132), and that the parking device (114; 180) has a coupling device (142; 190), which upon pivoting of the at least one roller (118; 182) on the first pivot bearing (122; 132) causes a coupled pivoting of the Support foot device (130; 181) on the second pivot bearing (132; 186). [2] Floor cleaning machine according to claim 1, characterized bythat the cleaning installation plane (32) is defined by the at least one cleaning tool (20, 21) and at least one support wheel (36, 38), which support the floor head (12) on the floor (22) to be cleaned during cleaning. [3] Floor cleaning machine according to claim 1 or 2, characterized by in that the parking device (114; 180) defines a parking installation plane (152) for the floor head (12) in a parking position (116), wherein (i) the at least one support foot (140; 180) of the support foot device (130; 181) and (ii) the at least one roller (118; 182) and / or at least one support foot arranged on a holder for the at least one roller define the parking installation plane (156). [4] Floor cleaning machine according to claim 3, characterized bythat in the parking position of the floor cleaning machine, the floor head (12) stands on a surface via the parking device (114; 180) in the parking position (116), and the floor head (12) stands on the surface via the cleaning device (32) when the parking device (114; 180) is not activated. [5] Floor cleaning machine according to claim 3 or 4, characterized by at least one of the following: - in the parking position (116) of the parking device (114; 180), the parking installation plane (156) is oriented parallel to the cleaning installation plane (28) or at an acute angle of at most 30°; - the parking installation plane (156) lies in the parking position (116) of the parking device (114; 180) below a bottom side (28) of the floor head body (18), wherein the bottom side (28) of the floor head body (18) faces the parking surface; - the cleaning installation level (32) is located in the parking position (116) of the parking device (114; 180) between an underside (28) of the floor head body (18) and the parking installation level (156). [6] Floor cleaning machine according to one of the preceding claims, characterized by that the first pivot bearing (122) defines a first pivot axis (124) and the second pivot bearing (132) defines a second pivot axis (134), with at least one of the following: - the first pivot axis (124) and the second pivot axis (134) are parallel to each other; - a roller axis (126) of the at least one roller (118) is parallel to the first pivot axis (124) and / or the second pivot axis (134); - the first pivot axis (124) and / or the second pivot axis (134) is oriented transversely and in particular perpendicularly to a forward travel direction (50) of the ground head (12); - the first pivot axis (124) and / or the second pivot axis (134) is parallel to the cleaning installation plane (32); - the first pivot axis (124) and / or the second pivot axis (134) is parallel to a parking installation plane (156); - the first pivot axis (124) and / or the second pivot axis (134) are oriented transversely to a rotation axis of the at least one cleaning tool (20; 21); - the first pivot axis (124) and / or the second pivot axis (134) are oriented parallel to a pivot axis of the joint device (16) for pivotability (160) of the holding rod device (14) to the floor head (12); - the first pivot axis (124) and / or the second pivot axis (134) are parallel to a roller axis (104) of a transport roller device (98) for the floor cleaning machine. [7] Floor cleaning machine according to one of the preceding claims, characterized bythat the at least one roller (118) lies on the cleaning installation plane (32) during a cleaning process and rolls along the floor (22) to be cleaned when the floor head (12) moves over the floor (22) to be cleaned and in particular rolls freely along with it. [8] Floor cleaning machine according to one of the preceding claims, characterized in that the first pivot bearing (122) and / or the at least one roller (118) is assigned a spring device (128), the spring force of which tends to pivot the at least one roller (118) away from an underside (28) of the floor head body (18). [9] Floor cleaning machine according to claim 8, characterized by that the at least one roller (118) is mounted floatingly on the floor head body (18) via the spring device (128) during a cleaning process. [10] Floor cleaning machine according to one of the preceding claims, characterized byin that during a cleaning operation, a holder (120) for the at least one roller (118) is oriented at a first angle to an underside (28) of the floor head body (18), and in a parking position (116) of the parking device (114) is oriented at a second angle to the underside (28) of the floor head body (18), wherein the second angle is greater than the first angle and in particular a spring device (128) ensures the transition from the first angle to the second angle. [11] Floor cleaning machine according to claim 10, characterized by at least one of the following: - the second angle is predetermined by a stop which is associated with the parking device (114); - the first angle is determined by the cleaning installation plane (32). [12] Floor cleaning machine according to one of the preceding claims, characterized bythat the parking device (114) comprises a holder (120) for the at least one roller (118), which holder is pivotally mounted on the first pivot bearing (122) and on which the at least one roller (118) is held in a rollable manner. [13] Floor cleaning machine according to one of the preceding claims, characterized by that the support foot device (130) has a rod (144) which is pivotally mounted on the base head body (18) via the second pivot bearing (132) and on which at least one support foot (140) and in particular at least two and in particular exactly two support feet (140) are seated in a rotationally fixed manner. [14] Floor cleaning machine according to one of the preceding claims, characterized by that the coupling device (142) comprises a rod (144) which is rotatably connected to a holder (120) for the at least one roller (118) and to which the support foot device (130) is rotatably connected. [15] Floor cleaning machine according to one of the preceding claims, characterized by that a holder (120) for the at least one roller (118) is articulated to the base head body (18) via the first pivot bearing (122), that a rod (144) as a coupling device (142) is rotatably articulated to the holder (120), that a bridge (150) is rotatably articulated to the rod (144) at a distance from the holder (120), and that the bridge (150) is connected to the support foot device (130) in a rotationally fixed manner, wherein the support foot device (130) is articulated to the base head body (18) via the second pivot bearing (132), and wherein in particular a toggle lever mechanism is formed. [16] Floor cleaning machine according to one of the preceding claims, characterized by that the parking device (114; 180) is arranged on an underside (28) of the floor head body (18), wherein the at least one cleaning tool (20, 21) is also located on the underside (28). [17] Floor cleaning machine according to one of the preceding claims, characterized by that a parking installation plane (156) of the parking device (114; 180) is defined by at least three support points and in particular by exactly three support points, wherein the at least one roller (118; 182) and / or at least one support foot (157; 140) arranged on a holder (120; 138) for the at least one roller (118; 182) and at least one support foot of the support foot device (140) form the support points. [18] Floor cleaning machine according to one of the preceding claims, characterized by that a tilting device (106) is arranged on the base head body (18), by means of which the base head (12) can be supported on a base (22) during a tilting process relative to the base (22). [19] Floor cleaning machine according to claim 18, characterized bythat the parking device (114) is designed such that it automatically goes into the parking position (116) during a tipping process via the tipping device (106) and in particular the at least one roller (118) and the support foot device (130) go into the parking position (116). [20] Floor cleaning machine according to claim 18 or 29, characterized by in that the tilting device (106) comprises a transport roller device (98), wherein the floor cleaning machine can be moved on a floor (22) with the at least one cleaning tool (20, 21) spaced from the floor (22) via the transport roller device (98). [21] Floor cleaning machine according to one of the preceding claims, characterized by that a transport roller device (98) is arranged on the base head body with at least one of the following: - during a cleaning operation, the transport roller device (98) is inactive and a transport roller or transport rollers (100, 102) of the transport roller device (98) are spaced from the cleaning installation plane (32); - the transport roller device (100) is arranged in the region of a rear end (46) of the floor head body (18), wherein the rear end (46) faces away from a front end (44) of the floor head body (18) and the front end (44) is related to a forward travel direction (50) of the floor head (12); - the transport roller device (98) is located in the region of a rear end (46) of the floor head body (18), which faces an operator during a cleaning operation; - the at least one roller (118) is positioned below the floor head body (18) during a cleaning process and the transport roller device (98) is positioned in a region of a rear end (46) of the floor head body (18) in front of the floor head body (18). [22] Floor cleaning machine according to one of the preceding claims, characterized by that at least one suction bar (82) is arranged on the floor head body (18), and that a blower device (90) for generating a suction flow is provided, which is fluidly coupled to the at least one suction bar (82). [23] Floor cleaning machine according to claim 22, characterized by that in the parking position of the floor cleaning machine, the at least one suction bar (82) is spaced from the storage surface. [24] Floor cleaning machine according to one of the preceding claims, characterized bythat the at least one roller (118) is arranged in a region of a front end (44) of the floor head body (18), wherein the front end (44) is related to a forward travel direction (50). [25] Floor cleaning machine according to one of the preceding claims, characterized by that the at least one roller (118) is arranged in a central region of the base head body (18), wherein the central region lies between lateral side ends (54, 56) of the base head body (18) with respect to a transverse axis (58). [26] Floor cleaning machine according to one of the preceding claims, characterized by that the at least one support foot (140) of the support foot device (130) is arranged between the at least one cleaning tool (20, 21) and a rear end (46) of the floor head body (18). [27] Floor cleaning machine according to one of the preceding claims, characterized bythat the at least one support foot (140) is arranged between the at least one cleaning tool (20, 21) and at least one suction bar (82) on the floor head body (18). [28] Floor cleaning machine according to one of the preceding claims, characterized by that the joint device (16) is assigned a locking device (99), by means of which a position of the holding rod device (14) relative to the base head (12) can be fixed. [29] Floor cleaning machine according to one of the preceding claims, characterized by that at least one support foot (157; 140) is seated on a holder (120; 138) for the at least one roller (118; 182), which support foot is pivotally fixed with respect to the at least one roller (118; 182) during pivoting on the first pivot bearing (122; 132). [30] Floor cleaning machine according to one of the preceding claims, characterized bythat a first cleaning tool (20) with a first axis of rotation is rotatably arranged on the floor head body (18), and a second cleaning tool (21) with a second axis of rotation is rotatably arranged, wherein the first axis of rotation and the second axis of rotation are oriented transversely to the cleaning installation plane (32). [31] Floor cleaning machine according to claim 30, characterized by that the first cleaning tool (20) and / or the second cleaning tool (21) are inclined relative to the cleaning installation plane (32) in order to generate propulsion. [32] Floor cleaning machine according to claim 30 or 31, characterized by that the at least one roller (118) is positioned on the floor head body (18) between the first cleaning tool (20) and the second cleaning tool (21) with respect to a transverse axis (58) of the floor head body (18). [33] Floor cleaning machine according to one of claims 30 to 32, characterized bythat the at least one support foot (140) of the support foot device (130) is positioned, relative to a longitudinal axis (48) of the floor head body (18), between the cleaning tools (20, 21) and a rear end (46) of the floor head body (18) and in particular between the cleaning tools (20, 21) and at least one suction bar (82). [34] Floor cleaning machine according to the preamble of claim 1 or any one of the preceding claims, characterized by that at least one first steering roller (40) and one second steering roller (42) are arranged on the floor head body (18) for support during a cleaning process and in particular for defining the cleaning installation plane (32). [35] Floor cleaning machine according to claim 34, characterized by that the first steering roller (40) and the second steering roller (42) are spaced apart in a direction parallel to a transverse axis (58) of the floor head body (18). [36] Floor cleaning machine according to claim 34 or 35, characterized by that the first steering roller (40) and the second steering roller (42) are spaced apart from a parking installation plane (156) of the floor head (12) in the parking position (116) of the parking device (140). [37] Floor cleaning machine according to one of claims 34 to 36, characterized by that the first steering roller (40) and the second steering roller (42) are arranged between the at least one cleaning tool (20, 21) and a rear end (46) of the floor head body (18) with respect to a longitudinal axis (48) of the floor head body (18). [38] Floor cleaning machine according to one of claims 34 to 37, characterized by that the first steering roller (40) and the second steering roller (42) are arranged between at least one suction bar (82) and a rear end (46) of the floor head body (18). [39] Floor cleaning machine according to one of claims 34 to 38, characterized bythat the first steering roller (40) and the second steering roller (42) are seated on a holder on which a transport roller device (98) is seated. [40] Floor cleaning machine according to one of claims 34 to 39, characterized by at least one of the following: - a distance between a first center of a first cleaning tool (20) and a second center of a second cleaning tool (21) in a direction parallel to a transverse axis (58) of the floor head body (18) is at least approximately equal to a distance between the first steering roller (40) and the second steering roller (42) in this direction. [41] Floor cleaning machine according to one of claims 34 to 40, characterized by that a first pivot axis (62) of the first steering roller (40) and a second pivot axis (64) of the second steering roller (42) are each transverse and in particular perpendicular to the cleaning installation plane (32). [42] Floor cleaning machine according to one of the preceding claims, characterized by that a dirt fluid tank device (92) and a blower device (90) are removably located on the floor head (12). [43] Floor cleaning machine according to one of the preceding claims, characterized by that the holding rod device (14) is gimbal-connected to the base head (12) by the joint device (16), in particular with at least one of the following: - the joint device (16) comprises a first joint (158) with a first pivot axis (160) which is parallel to the cleaning installation plane (32); - the joint device (16) comprises a second joint (162) with a second pivot axis (164) which is transverse and in particular perpendicular to a first pivot axis (160) of the joint device (16). [44] Floor cleaning machine according to one of the preceding claims, characterized bythat a battery device (170) and / or a tank device (172) for cleaning fluid are located on the holding rod device (14). [45] Floor cleaning machine according to one of the preceding claims, characterized by a supply device (178) for cleaning liquid, by means of which cleaning liquid can be supplied from a tank device (172) for cleaning liquid to the at least one cleaning tool (20, 21) and / or to a floor (22) to be cleaned. [46] A method for bringing a floor cleaning machine (10) into a parking position, wherein the floor cleaning machine (10) has a floor head (12) with at least one cleaning tool (20, 21) and a holding rod device (14) which is articulated to the floor head (12), in which the floor head (12) is tilted relative to a storage surface (22), at least one roller (118) which is pivotably arranged on the floor head (12) moves into a parking position (116) by lifting it off the storage surface (22), and a support foot device (30) also moves into a parking position (116) by coupling to the at least one roller (118) and driven by the pivoting movement of the at least one roller (118),and in which the floor head (12) is supported in the parking position (i) on the at least one roller (118) and / or on at least one support foot (157) connected to a holder (120) for the at least one roller (118) and (ii) by the support foot device (130) on the storage surface (22), wherein the at least one cleaning tool (20, 21) is spaced from the storage surface (22) in the parking position. [47] Method according to claim 46, characterized by that when the base head (12) is tilted on the storage surface (22), the base head (12) is supported on the storage surface via a transport roller device (98), wherein the transport roller device (98) is arranged on the base head (12). [48] ​​Method according to claim 46 or 47, characterized bythat the at least one roller (118) rolls on a floor (22) to be cleaned during a cleaning process and in particular has no supporting function for the floor head (12) on the floor (22) to be cleaned. [49] Method for operating a floor cleaning machine (10) which comprises a floor head (12) with at least one cleaning tool (20, 21) and a holding rod device (14) which is articulated on the floor head (12), in which the floor head (12) is supported on a floor (22) to be cleaned by the at least one cleaning tool (20, 21) and by at least one first steering roller (40) and a second steering roller (42) on the floor (22) during a cleaning operation, wherein a first pivot axis (62) of the first steering roller (40) and a second pivot axis (64) of the second steering roller (42) are each oriented transversely to the floor (22).

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