EP4530404B1 - Sweeping machine and method for operating a sweeping machine - Google Patents

Description

• ein Fahrgestell;
• eine Fahreinrichtung, welche an dem Fahrgestell angeordnet ist und welche eine Aufstellebene der Kehrmaschine für einen zu reinigenden Boden definiert;
• mindestens eine Kehrwalze, welche rotierbar ist mit einer Rotationsachse mindestens näherungsweise parallel zu der Aufstellebene;
• eine Kehrgutaufnahmeeinrichtung mit mindestens einem Kehrgutbehälter und mit mindestens einer Öffnung;
• mindestens eine Klappe, welche an der Kehrgutaufnahmeeinrichtung schwenkbar angeordnet ist und welche der mindestens einen Öffnung zugeordnet ist, wobei die mindestens eine Klappe mindestens eine erste Stellung aufweist, in welcher die Kehrgutaufnahmeeinrichtung an der mindestens einen Öffnung durch die mindestens eine Klappe geschlossen ist, und eine zweite Stellung aufweist, welche eine für einen Kehrbetrieb genutzte Stellung ist, und wobei beim Kehrbetrieb Kehrgut durch die mindestens eine Kehrwalze durch die mindestens eine Öffnung hindurch in den mindestens einen Kehrgutbehälter gefördert ist, und
• eine erste Aktoreinrichtung, welche eine Schwenkbewegung der mindestens einen Klappe zwischen der ersten Stellung und der zweiten Stellung bewirkt.

The invention relates to a sweeping machine comprising

• a chassis;
• a driving device which is arranged on the chassis and which defines a setup level for the sweeper on a floor to be cleaned;
• at least one sweeping roller which is rotatable with an axis of rotation at least approximately parallel to the installation plane;
• a sweeping waste collection device with at least one sweeping waste container and with at least one opening;
• at least one flap which is pivotably arranged on the sweeping device and which is associated with the at least one opening, wherein the at least one flap has at least a first position in which the sweeping device is closed at the at least one opening by the at least one flap, and a second position which is a position used for sweeping operation, and wherein during sweeping operation sweeping material is conveyed by the at least one sweeping roller through the at least one opening into the at least one sweeping container, and
• a first actuator device which causes a pivoting movement of at least one flap between the first position and the second position.

The invention further relates to a method for operating a sweeper.

The JP H05-321 219 A A floor cleaning vehicle is shown cleaning a floor surface.

The DE 699 08 720 T2 discloses cleaning machines, in particular so-called "over-the-top" cleaning machines.

The DE 10 2014 102 540 A1 Disclosing a sweeper comprising a chassis for movement on a floor surface, a sweeping roller for cleaning the floor surface according to the overhead sweeping principle, a coarse sweeping cover having a sweeping threshold, wherein the sweeping threshold of the sweeping roller is positioned in front of the sweeper in a main direction of movement of the sweeper and the sweeping roller partially covers the coarse sweeping cover in a covering position, and an actuating unit for moving the coarse sweeping cover from the covering position to a release position.

The DE 26 29 967 A1 reveals a dust filter device for sweeping and floor cleaning machines.

The EP 0 578 442 A1 reveals a sweeper based on the front loader principle.

More sweepers are in the EP 0 606 713 A1 , US 4,206,530 A , US 2002/0138939 A1 , EP 1 612 335 A2 and WO 2016/166616 A1 revealed.

The DE 44 16 132 A1 reveals a suction device for sweeping vehicles.

The DE 196 31 536 A1 discloses a method for cleaning surfaces by means of a self-picking, pneumatically operated sweeper with a suction nozzle for picking up the sweeping material, which is arranged on a suction shaft and sucks the sweeping material into the sweeper.

More sweepers are in the EP 1 612 335 A2 , the US 3,233,274 A , the WO 2004/071654 A2 , the US 8,458,855 B2 , the EP 1 535 564 A2 , the WO 2019/149343 A1 and the US 5,940,928 A revealed.

The invention is based on the objective of providing a sweeping machine of the type mentioned above, which enables an optimized cleaning result for a floor to be cleaned.

This problem is solved in the sweeper mentioned at the outset according to the invention in that the at least one flap has at least a third position in which the at least one flap is raised relative to the installation plane and a passage for sweeping material to the at least one sweeping roller is formed between the at least one flap and the installation plane, and that a second actuator device for bringing the at least one flap into the at least one third position is assigned to the at least one flap.

During sweeping (cleaning) operation of a sweeper according to the invention, the at least one flap is in the second position. This prevents debris of a sufficient size, located in front of the flap in a direction of travel of the sweeper, from reaching the at least one sweeping roller due to the flap's position, which acts as a barrier.

According to the invention, at least one third position of the at least one flap is provided, which opens the passage for sweeping material to the at least one sweeping roller. This allows the material to pass below the at least one flap to the sweeping roller and then (in particular after the at least one flap is returned to the second position) be conveyed into the at least one sweeping material container.

The solution according to the invention allows not only for "dust sweeping" but also for the removal of "light debris" from the floor to be cleaned. By temporarily lifting at least one flap and holding it in at least one third position, this light waste can reach the sweeping roller and from there be transported into the at least one waste container.

• die mindestens eine Klappe berührt die Aufstellebene mit einem Vorderende, welches der mindestens einer Kehrwalze zugewandt ist, oder das Vorderende weist zu der Aufstellebene einen Abstand auf, welcher höchstens 1 cm beträgt;
• der Durchgang für Kehrgut zwischen der mindestens einen Kehrwalze und einem Ende des Fahrgestells ist durch die mindestens eine Klappe gesperrt;
• die mindestens eine Klappe bildet zu der mindestens einen Kehrwalze hin eine Leiteinrichtung zum Leiten von Kehrgut in den mindestens einen Kehrgutbehälter;
• die mindestens eine Klappe bildet eine Kehrschaufel, welche insbesondere an der Aufstellebene anliegt;
• die mindestens eine Klappe bildet eine Rampe zu dem mindestens einem Kehrgutbehälter hin.

According to the invention, it is provided that in the second position of the at least one flap at least one of the following is present:

• at least one flap touches the installation plane with a front end that faces at least one sweeping roller, or the front end has a distance to the installation plane which is at most 1 cm;
• The passage for sweeping material between the at least one sweeping roller and one end of the chassis is blocked by the at least one flap;
• which forms at least one flap towards the at least one sweeping roller a guiding device for directing sweeping material into the at least one sweeping material container;
• at least one flap forms a dustpan, which is particularly attached to the installation plane;
• The at least one flap forms a ramp leading to the at least one waste container.

If the at least one flap in the second position (in a sweeping operation) touches the installation plane with a front end or at least has only a small gap, then sweeping material can be conveyed through the at least one flap and through the opening into the sweeping material container in the manner of a dustpan.

In this case, the passage for sweeping material between the at least one sweeping roller and one end of the chassis (and especially at a fourth end of the chassis) is blocked by the at least one flap in order to implement a sweeping shovel principle.

The at least one flap preferably forms a guiding device for directing sweepings into the at least one sweepings container. It forms a sweeping shovel, which rests against the installation level and thus against the floor to be cleaned, in order to convey sweepings into the container in a defined manner. The at least one flap forms a ramp (inclined plane) leading to the at least one sweepings container.

• eine Schwenkachse für die Schwenkbarkeit der mindestens einen Klappe ist mindestens näherungsweise parallel zu der Rotationsachse der mindestens einen Kehrwalze;
• die mindestens eine Klappe weist einen Bereich aus einem biegeflexiblen Material auf, welcher zur Anlage der mindestens einen Klappe an den zu reinigenden Boden dient und welcher der mindestens einen Kehrwalze zugeordnet ist;
• eine Schwenkachse der mindestens einen Klappe ist höhenbeabstandet zu der Aufstellebene;
• die mindestens eine Klappe ist an einer Unterseite des Fahrgestells, welche der Aufstellebene zugewandt ist, angeordnet;
• die mindestens eine Öffnung hat eine Oberseite und eine Unterseite, welche der Aufstellebene zugewandt ist, und ein Schwenklager der mindestens einen Klappe ist im Bereich der Unterseite positioniert.

Furthermore, it is advantageous if at least one of the following is provided:

• A pivot axis for the pivotability of the at least one flap is at least approximately parallel to the axis of rotation of the at least one sweeping roller;
• The at least one flap has an area made of a flexible material, which serves to position the at least one flap against the floor to be cleaned and which is assigned to the at least one sweeping roller;
• a pivot axis of at least one flap is spaced vertically from the installation plane;
• at least one flap is arranged on an underside of the chassis which faces the installation plane;
• which has at least one opening, a top and a bottom facing the installation plane, and a pivot bearing of the at least one flap is positioned in the area of the bottom.

This results in a simple, constructive training.

A section made of flexible material, designed in particular as a lip and especially as a contact lip against a floor to be cleaned, allows for targeted transport of sweepings into the sweepings container.

By spacing the pivot axis away from the installation plane, at least one flap can be implemented as a dustpan or as a "loading ramp" for sweepings.

By arranging a pivot bearing in the area of the underside of at least one opening, a dustpan can be easily implemented via the flap.

The at least one flap has multiple functions, namely, firstly, as a closing element when the at least one flap is in the first position. In the second position, the at least one flap forms a kind of sweeping shovel for transporting sweepings into the sweepings container and for guiding the sweepings in a defined manner.

It is advantageous if the sweeper has a forward direction of travel and the at least one sweeping roller rotates in a direction parallel to the forward direction of travel when sweeping. This allows the sweepings to be transported into the at least one debris container in a controlled manner, similar to a dustpan.

Furthermore, it is advantageous if the sweeper has a front end and at least one flap is positioned between the front end and the at least one sweeping roller. Such a sweeper is also called a front loader sweeper. With this type of sweeper, the rotational speed of the at least one sweeping roller can be kept relatively low, and also a The sweeping path can be kept short. This allows for low-dust sweeping and reduces roller wear.

• in der mindestens einer dritten Stellung der mindestens einer Klappe hat der Durchgang zwischen der mindestens einen Klappe und der Aufstellebene eine Mindesthöhe von mindestens 20 mm und insbesondere von mindestens 25 mm und insbesondere von mindestens 30 mm;
• ein Vorderende der mindestens einen Klappe, welches der mindestens einer Kehrwalze zugewandt ist, hat in der mindestens einen dritten Stellung einen Abstand zu der Aufstellebene;
• ein Vorderende der mindestens einen Klappe weist in der mindestens einen dritten Stellung einen Abstand zu der Aufstellebene von höchstens 150 mm und insbesondere von höchsten 100 mm und insbesondere von höchstens 80 mm auf.

It is advantageous if at least one of the following is provided:

• In at least one third position of the at least one flap, the passage between the at least one flap and the installation plane has a minimum height of at least 20 mm and in particular of at least 25 mm and in particular of at least 30 mm;
• In the at least one third position, a front end of the at least one flap, which faces the at least one sweeping roller, has a distance to the installation plane;
• In at least one third position, the front end of the at least one flap has a distance to the installation plane of at most 150 mm, and in particular of at most 100 mm, and in particular of at most 80 mm.

In at least one third position, a passage for "light waste" can be achieved to allow entry.

If a front end of the at least one flap in the at least one third position has a corresponding maximum distance to the installation plane, then the at least one third position can be reached quickly from the second position and the second position can then also be reached quickly from the at least one third position.

• die mindestens eine dritte Stellung liegt zwischen der ersten Stellung und der zweiten Stellung;
• eine Schwenkrichtung der mindestens einen Klappe ausgehend von der zweiten Stellung in die dritte Stellung ist von der Aufstellebene weg;
• eine Schwenkrichtung der mindestens einen Klappe ausgehend von der zweiten Stellung in die erste Stellung ist von der Aufstellebene weg.

Furthermore, it is advantageous if at least one of the following is provided:

• where at least one third position lies between the first position and the second position;
• one pivot direction of the at least one flap starting from the second position to the third position is away from the installation plane;
• The pivot direction of at least one flap, starting from the second position to the first position, is away from the installation plane.

This results in a simple design for the corresponding sweeper. At least one third position can be reached quickly, and from at least one third position, for example, the second position can be reached quickly.

In principle, it is possible for the flap to be driven directly by an electric motor, for example, to pivot. In a structurally advantageous embodiment, a lever mechanism and/or linkage mechanism is articulated to the at least one flap, which is coupled to the first actuator. This allows for simple movement of the at least one flap, particularly between the first and second positions.

In a structurally advantageous embodiment, the second actuator is coupled to the first actuator, and in particular mechanically coupled. This allows at least a third position to be reached by the second actuator acting on the first, or it allows a simple transition from the at least one third position to the second position.

It is particularly advantageous if the second actuator is designed and/or arranged such that, starting from the second position of the at least one flap, it moves the at least one flap into the at least one third position, and/or, starting from the at least one third position, it moves the at least one flap into the second position. The starting point for the at least one third position is then the second position. Position. This allows the passage to be easily cleared so that "light waste" can reach at least one sweeping roller.

In one embodiment, the first actuator is articulated to the second actuator. This results in a structurally simple design.

It can be provided that the first actuator assembly has a base and at least one movement element, wherein the at least one movement element is movable (relative to the base) and in particular displaceable, and the at least one movement element is articulated to the at least one flap or to a lever mechanism and/or linkage mechanism for the at least one flap. This allows a pivoting movement of the flap to be easily achieved, in particular for moving it into the first and second positions.

In a structurally advantageous embodiment, the second actuator is coupled to the base and, in particular, causes the combination of the base and at least one moving element to move together. This allows the second actuator, via the first actuator, to move the at least one flap and bring it into or out of at least one third position.

In particular, it is provided that the second actuator is coupled to the first actuator in such a way that the first actuator as a whole is moved via the second actuator. The second actuator then moves the first actuator, and this movement of the first actuator as a whole in turn causes a pivoting movement of the at least one flap, whereby the at least one flap is then brought into at least one third position.

In a structurally simple embodiment, the first actuator assembly comprises at least one pneumatic cylinder or hydraulic cylinder. Cylinder. In principle, the first actuator can also be designed by an electric motor.

It is also preferably provided that the second actuator device has an electric motor or, in particular, a linear motor.

In a structurally advantageous embodiment, at least one bridge element is provided, which is movably and, in particular, pivotably positioned relative to the chassis. The first actuator and the at least one bridge element are articulated, and the second actuator is coupled to the at least one bridge element. The second actuator can effect a movement of the at least one bridge element, which in turn causes a movement of the first actuator. By "locking" the at least one bridge element, a pivoting movement of the at least one flap between the first and second positions can be effected, with this pivoting movement being driven by the first actuator. The second actuator can then move the bridge element itself (release its locking) to effect a pivoting movement into the at least one third position of the at least one flap. This allows, for example, a simple pivoting movement into the at least one third position to be initiated by the second actuator, starting from the second position of the at least one flap.

It is advantageous if, during the transition from the second position of the at least one flap to the at least one third position of the at least one flap, the second actuator causes a movement, and in particular a pivoting movement, of the at least one bridge element starting from an initial position of the at least one bridge element. This results in a structurally simple design.

Furthermore, it is advantageous if, during the transition between the first position of the at least one flap and the second position of the at least one The flap ensures that the second actuator is not activated and, in particular, that at least one movable bridge element, to which the first actuator is coupled, is fixed in a starting position. This results in a mechanically simple design.

• die Bedienungseinrichtung ist so ausgebildet, dass ein Halten der mindestens einen Klappe in der mindestens einen dritten Stellung einen anhaltenden aktiven Bedienereingriff erfordert, wobei insbesondere bei Beendigung des aktiven Bedienereingriffs die mindestens eine Klappe automatisch in die zweite Stellung geht;
• ein Halten der mindestens einen Klappe in der ersten Stellung und/oder der zweiten Stellung erfordert keinen anhaltenden Bedienereingriff.

In one embodiment, an operating device for an operator to control the first actuator device and the second actuator device is provided with at least one of the following:

• The operating device is designed in such a way that holding the at least one flap in the at least one third position requires a continuous active operator intervention, wherein, in particular, when the active operator intervention ends, the at least one flap automatically goes into the second position;
• Holding at least one flap in the first position and/or the second position does not require continuous operator intervention.

This allows for a simple way to reach at least one third position as a temporary position. The second position is the operational position for sweeping. In the at least one third position of the at least one flap, passage to the at least one sweeping roller is temporarily (and especially for a relatively short time) opened.

In particular, the operating device for the second actuator includes a push button, wherein pressing and holding the button moves and holds the at least one flap in the at least one third position, and upon releasing the button from the at least third position, the at least one flap automatically returns from the at least third position to the second position. This allows an operator to temporarily set the at least one third position of the at least one flap, for example, if they notice that light waste is being moved by the sweeper.

In an advantageous embodiment, the sweeping device has a first side wall and an opposing second side wall, wherein the at least one flap is positioned between the first and second side walls. The first side wall has a first end face facing the at least one sweeping roller, and the second side wall has a second end face facing the at least one sweeping roller. The at least one opening is recessed relative to the first and second end faces in a direction transverse to the axis of rotation of the at least one sweeping roller. This allows, for example, a pivot bearing for the at least one flap to be easily and securely mounted. Furthermore, this helps to minimize dust pollution in the surrounding area.

• durch eine Ausbildung als Frontladermaschine, bei welcher die Kehrgutaufnahmeeinrichtung zwischen einem Vorderende der Kehrmaschine und der mindestens einen Kehrwalze angeordnet ist;
• durch eine selbstfahrende Ausbildung;
• durch eine Ausbildung als Aufsitzmaschine oder Nachläufermaschine;
• durch eine Befüllung des mindestens einen Kehrgutbehälters nach dem Kehrschaufelprinzip, wobei die mindestens eine Klappe eine Kehrschaufel bildet.

Furthermore, it is advantageous if at least one of the following is provided:

• by being designed as a front loader machine, in which the sweeping material collection device is arranged between a front end of the sweeper and the at least one sweeping roller;
• through self-driving training;
• through training as a ride-on or trailed machine;
• by filling the at least one sweepings container according to the sweepings shovel principle, wherein the at least one flap forms a sweepings shovel.

This results in effective floor cleaning.

It is advantageous if at least one side brush is mounted on the chassis. This results in a "widening" of the cleaning area. a corresponding length (parallel to the axis of rotation) of at least one sweeping roller.

In one embodiment, a sensor device is provided which monitors a space with regard to the accumulation of sweepings, wherein the space is located in front of the at least one flap before the passage. The sensor device can check whether waste is accumulating or has accumulated in front of the at least one flap (especially when it is in the second position).

The sensor device is, for example, an optical sensor device and includes a camera. This sensor device allows, for instance, the operator of the sweeper to be notified that debris has accumulated, enabling them to intervene and, in particular, to manually activate the second actuator. It also allows for the automatic activation of the second actuator to move at least one flap into at least one third position.

In one embodiment, the sensor device is mounted on the chassis with a field of view towards the installation plane. This allows for monitoring of waste accumulation on the floor to be cleaned in the space in front of the passage (with at least one flap in the second position).

In an advantageous embodiment, a control unit is provided to which the sensor unit is effectively coupled and which controls, and in particular automatically controls, the second actuator unit. The sensor unit delivers its sensor signals to the control unit. Within the control unit, the sensor signals are evaluated, particularly in an evaluation unit. For example, evaluation is performed by image processing if the sensor unit provides optical data. The second actuator unit can then be activated via the control unit as needed, and in particular, to activate automatically, in particular to bring at least one flap into at least one third position.

It is particularly advantageous if, upon detection of a certain accumulation of sweepings in the space in front of the passage with the at least one flap in the second position, the control device automatically activates the second actuator to move the at least one flap into the at least one third position. This allows such accumulated sweepings to pass over them into the passage and be conveyed by the at least one sweeping roller into the at least one sweepings container.

In this context, it is particularly advantageous if the at least one third position is held for a specific duration, which is not more than 30 seconds, and then the at least one flap is automatically moved to the second position by a control device. This allows accumulated debris to be collected within a relatively short period, and the "normal" sweeping process (with the at least one flap in the second position) can then be resumed. To collect accumulated light waste in front of the at least one flap when it is in the second position, the at least one flap is automatically moved to the at least one third position for a specific, relatively short period and then back to the second position.

It is advantageous if at least one flap is located between the first side wall and the second side wall. This protects it from the sides of the sweeper.

According to the invention, a method of the type mentioned at the outset is provided in which the at least one flap is brought into the at least one third position in order to allow passage for sweepings between the at least a flap and the installation level to which at least one sweeping roller is opened, and then the at least one flap is brought into the second position to bring sweeping material into the at least one sweeping material container.

This allows it to sweep up not only finer debris (dust) but also light litter with the appropriate sweeper. This results in a broader range of applications.

Advantages of the method according to the invention have already been explained in connection with the sweeper according to the invention.

In particular, the second actuator is coupled to the first actuator in such a way that the second actuator moves the first actuator as a whole. This results in a structurally simple design.

Figur 1

eine Seitenansicht eines Ausführungsbeispiels einer erfindungsgemäßen Kehrmaschine mit einer Teilschnittdarstellung (im Bereich einer Kehrgutaufnahmeeinrichtung);

Figur 2

eine Teildarstellung der Kehrmaschine gemäß Figur 1 im Bereich der Kehrgutaufnahmeeinrichtung;

Figur 3

eine Teildarstellung der Kehrmaschine gemäß Figur 1 mit Kehrgutaufnahmeeinrichtung und Kehrwalze (Hauptkehrwalze) bei einem Kehrbetrieb, wobei eine Klappe der Kehrgutaufnahmeeinrichtung in einer zweiten Stellung ist;

Figur 4

eine ähnliche Ansicht wie Figur 3, wobei die Klappe in einer ersten Stellung ist, in welcher die Kehrgutaufnahmeeinrichtung zu der Kehrwalze hin geschlossen ist;

Figur 5

eine ähnliche Ansicht wie Figur 3, wobei die Klappe an der Kehrgutaufnahmeeinrichtung in einer dritten Stellung ist, welche einen Durchgang von Kehrgut zu der Kehrwalze hin unterhalb der Klappe ermöglicht;

Figur 6

eine perspektivische Teildarstellung der Kehrmaschine gemäß Figur 1 in der Richtung A gemäß Figur 5 mit der Klappe in der dritten Stellung;

Figur 7

ein weiteres Ausführungsbeispiel einer Kehrmaschine in Seitenansicht in einer Teilschnittdarstellung; und

Figur 8

eine vergrößerte Darstellung eines Bereichs der Kehrmaschine gemäß Figur 6 im Bereich der Kehrgutaufnahmeeinrichtung.

The following description of preferred embodiments, in conjunction with the drawings, serves to further explain the invention. The drawings show:

Figure 1

a side view of an embodiment of a sweeper according to the invention with a partial sectional view (in the area of a sweeping device);

Figure 2

a partial representation of the sweeper according to Figure 1 in the area of the sweeping waste collection facility;

Figure 3

a partial representation of the sweeper according to Figure 1 with sweeping device and sweeping roller (main sweeping roller) during a sweeping operation, wherein a flap of the sweeping device is in a second position;

Figure 4

a similar view to Figure 3 , wherein the flap is in a first position in which the sweeping material collection device is closed towards the sweeping roller;

Figure 5

a similar view to Figure 3 , wherein the flap on the sweeping device is in a third position, which allows passage of sweeping material to the sweeping roller below the flap;

Figure 6

a perspective partial view of the sweeper according to Figure 1 in direction A according to Figure 5 with the flap in the third position;

Figure 7

Another embodiment of a sweeper in side view in a partial sectional view; and

Figure 8

an enlarged view of an area of the sweeper according to Figure 6 in the area of the sweeping waste collection facility.

An exemplary embodiment of a sweeper, which is located in the Figures 1 to 5 The system shown and labelled 10 comprises a chassis 12. The chassis 12 forms the base (the base carrier) of the sweeper 10, to which further components of the sweeper 10 are directly or indirectly fixed.

The chassis 12 carries a driving device 14. The sweeper 10 can be positioned on a floor 16 to be cleaned and driven over it via the driving device 14.

The drive mechanism 14 defines a setup level 18 for positioning the sweeper 10 on the floor 16 to be cleaned. If the floor 16 to be cleaned is level, then the setup level 18 coincides with a corresponding surface of the floor 16 to be cleaned.

In one embodiment, the driving device 14 comprises a front wheel device 20 with left and right front wheel, and a rear wheel device 22 with left and right rear wheel.

The chassis 12 has an underside 24 which faces the installation level 18.

The sweeper 10 comprises (at least) a sweeping roller 26, which is arranged on the chassis 12 and is positioned on the underside 24 of the chassis 12 or between the mounting level 18 and the underside 24.

The sweeping roller 26 is a main sweeping roller. It is mounted to rotate about a rotational axis 28. The sweeper 10 has a drive, and in particular a motor drive, for rotating the sweeping roller 26 about the rotational axis 28.

The axis of rotation 28 is oriented parallel to the mounting plane 18.

The front wheel assembly 20 and the rear wheel assembly 22 have wheel axles which are also parallel to the mounting plane 18. The rotation axis 28 is parallel to these wheel axles.

In one exemplary embodiment (compare Figure 1 ) the sweeping roller 26 is positioned between the front wheel assembly 20 and the rear wheel assembly 22 on the underside 24 of the chassis 12.

The sweeping roller 26 is, in particular, a brush roller equipped with bristles (especially in the form of bristle bundles) 30. The bristle bundles 30 form the actual working elements of the sweeping roller 26 during the sweeping operation of the sweeping machine 10.

In one embodiment, the sweeping roller 26 is rotatably mounted on a swing arm 32. The swing arm 32 is pivotably positioned on the chassis 12.

The distance between the sweeping roller 26 and the mounting surface 18 can be adjusted and fixed via the rocker arm 32. In particular, this makes it possible, as in Figure 1 shown, for example, to lift the sweeping roller 26 from the installation level 18 for a transport journey.

In principle, it is also possible to adjust the contact pressure of the sweeping roller 26 against the floor 16 to be cleaned, provided the swing device 32 is appropriately designed or controlled.

As mentioned, in Figure 1 Figure 1 shows a position of the sweeping roller 26 in which it is spaced away from the mounting surface 18 and therefore does not act on the floor 16 to be cleaned. For sweeping operation, the sweeping roller 26 is lowered to the mounting surface 18 via the swing arm 32 (and initiated by an operator).

The sweeper 10 has a front end 34 and a rear end 36. In particular, the front end 34 and/or the rear end 36 is located on the chassis 12.

The sweeper 10 has a forward direction 38, which is a direction that extends from the rear end 36 to the front end 34.

The rear wheel assembly 22 is closer to the rear end 36 than the front wheel assembly 20.

The sweeping roller 26 is positioned in a middle area between the front end 34 and the rear end 36.

A superstructure 40 is arranged on the chassis 12 above the sweeping roller 26. This superstructure 40 comprises a housing 42. A drive unit for the drive mechanism 14, used to move the sweeper 10 across the floor 16 to be cleaned, is located in the housing 42. Further components are also arranged in the housing 42.

In one embodiment, a blower is arranged adjacent to a debris container 44. During operation, it generates a negative pressure. This negative pressure is used, in particular, to pressurize the debris container 44 in order to minimize dust accumulation around the sweeper 10.

In one embodiment, a drive for the swing mechanism 32 for lowering the sweeping roller 26 onto the installation level 18 and for raising it is arranged in the housing 42.

A drive for rotating the sweeping roller 26 around the axis of rotation 28 can be arranged on the rocker arm 32 or in the housing 42. In the latter case, a suitable transmission gearbox is required.

In the illustrated embodiment, the sweeper 10 is designed as a ride-on machine. It includes a seat 46 for an operator, which is positioned on the superstructure 40. The rear of the seat 46 is located, in particular, at the rear end 36 of the sweeper 10.

Furthermore, operating elements 48 are arranged on the structure 40. These include a steering wheel 50, accelerator pedals and an operating unit 52 for actuator devices, which are described in more detail below.

A sweeping device 54 is positioned on the chassis 12. The sweeping device 54 includes the sweeping container 44. In principle, several sweeping containers can also be provided.

The debris collection device 54 is arranged in front of the sweeping roller 26, in the direction from the rear end 36 to the front end 34. The sweeping roller 26 conveys debris into the debris container 44.

The sweeping device 54 with the sweeping container 44 is located in the area of the front end 34 of the sweeper 10. In one embodiment, the front end 34 is formed on the sweeping device 54.

The sweeper 10 is a front loader machine in which the sweeping container 44 is located in front of the sweeping roller 26 in the direction from the rear end 36 to the front end 34.

Accordingly, the sweepings container 44 on the sweeper 10 is also positioned in front of the seat 46 in this direction.

In one embodiment, a high-level emptying of the sweepings container 44 is provided. A hydraulic drive 47 is provided with which the sweepings container 44 can be lifted for emptying.

In an alternative embodiment, a deep emptying of the sweepings container 44 is provided, for which a corresponding drive is available.

Alternatively, the removal of the sweepings container 44 from the sweepings intake 54 for emptying may also be provided.

In one embodiment, the sweeper 10 has one or more side brush assemblies 56. A side brush assembly 56 comprises a holder 58, which is positioned relative to the chassis 12, and a side brush 60 as the sweeping tool. The side brush 60 is held on the holder 58.

A side brush 60, in turn, comprises a bristle holder 62, for example in the form of a disc, on which bristle bundles are arranged. The bristle bundles are fixed on the bristle holder 62, in particular along a circular line, and project obliquely outwards, so that the side brush 60 has a truncated cone shape with respect to the bristle bundles.

The side brush 60 is driven rotaryally around a rotational axis 64 during operation. In sweeping mode, the rotational axis 64 of the sweeper 10 is oriented transversely to the mounting plane 18. Specifically, it lies at an acute angle to the mounting plane 18 and is not perpendicular to it.

A drive, and in particular a motor drive 66, for the rotational movement of the side brush 60 around the axis of rotation 64 is arranged on the holder 58.

The holder 58 is positioned movable relative to the chassis 12, so that the corresponding side brush 60 of the side brush assembly 56 can be lowered onto the floor 16 to be cleaned for sweeping operation and can be lifted, for example, during a non-cleaning operation.

In one embodiment, the side brush device 56 is arranged so that it extends beyond the front end 34.

The function of a side brush assembly 56 is to convey debris from the side inwards (towards the chassis 12) so that it can be picked up by the sweeping roller 26. The side brush assembly 56 widens the sweeping area of the sweeper 10, and in particular makes it wider than would be required by the length of the sweeping roller 26 and the axis of rotation 28.

The sweeping roller 26 has a direction of rotation 68 such that it can convey sweepings into the sweepings container 44. The axis of rotation 68 is such that, during sweeping operation of the sweeper 10, it is parallel to the forward direction of travel 38 of the sweeper 10 on the floor 16 to be cleaned.

At the in Figure 1 In the illustration shown, this direction of rotation is 68 clockwise.

When the sweeper 10 is trained as a front loader machine, with an operator sitting on seat 46 looking forward towards the front end 34, and with the sweeping container 44 in front of him in this direction, the direction of rotation 68 of the sweeping roller 26 is clockwise.

The sweeping device 54 has a first side wall 70 and an opposing second side wall. A base 72 lies between these. The base 72 faces the installation level 18. The first side wall 70 and the second side wall are fixed transversely and, in particular, vertically to the base 72.

Towards the front end 34, the sweeping waste collection device 54 has a front wall 74.

In one embodiment, the front wall has a first area 76 extending from the base 72, which is positioned obliquely to the mounting plane 18 from the base 72 to the front end 34.

This provides a space in the first area 76 in front of the front wall in which a corresponding side brush 60 can be positioned.

The first area 76 is adjoined at the front end 34 by a second area 78 of the front wall 74.

The sweeping waste collection device 34 also has a rear wall 80 (compare, for example, Figure 2 and 3 ) towards the sweeping roller 26.

The sweepings container 44 is arranged or formed between the front wall 74, the rear wall 80 and the first side wall 70 as well as the second side wall.

On the rear wall 80, the sweeping roller 26 is assigned (at least) one opening 82 (compare Figures 3 and 6 ) formed. Through the opening 82, debris picked up from the floor 16 to be cleaned can be conveyed into the debris container 44.

The first side wall 70 has a first end face 84 (compare Figure 3 ), which is assigned to the sweeping roller 26. Accordingly, the second side wall has a second end face.

The opening 82 is set back from the first end face 84 and the second end face. The distance between the opening 82 and the sweeping roller 26 is greater than the distance between the first end face 84 and the second end face, respectively, and the sweeping roller, in a direction from the rear end 36 to the front end 34.

The area of the first side wall 70 and the second side wall, which extends over the opening 82 towards the sweeping roller 26, forms, in a sense, a side skirt 86.

The opening 82 is formed between the first side wall 70 and the opposite second side wall and extends, for example, over the entire width of the sweeping device 54 between the first side wall 70 and the opposite second side wall, or over a partial area relating to this width (in a direction parallel to the axis of rotation 28).

The opening 82 is positioned away from the underside of the chassis 12 (towards the installation level 18) and is located in front of the sweeping roller 26 (in the direction from the rear end 36 to the front end 34) in order to be able to throw sweeping material into the sweeping material container 44 through the opening 82.

In one embodiment, the opening 82 is positioned between the left and right front wheels of the front wheel assembly 20.

The opening 82 has a bottom surface 88, which faces the mounting surface 18 (compare Figures 3 and 6 ), and an opposite top side 90.

A flap 92 is located in the area of the opening 82 on the sweeping material collection device 54. The flap 92 is pivotally mounted about a pivot axis 96 via a pivot bearing 94. The pivot axis 96 is parallel to the mounting plane 18 and parallel to the rotation axis 28.

In one embodiment, the pivot bearing 94 is located on the base 92 of the sweeping device 54 and thus in the area of the underside 88 of the opening 82.

In one embodiment, the flap 92 is covered and thus protected laterally to the outside, at least in a partial area, by the side skirts 86 of the first side wall 70 and the second side wall.

The flap 92 has several functions, which are explained below. In particular, one function of the flap 92 is determined by its pivot position on the pivot bearing 94.

The flap 92 has a base 98. The base 98 is made of a rigid material such as a metal or plastic material. A section 100 made of a flexible material is arranged on the base 98. This section 100 forms a front end 102 of the flap 92. This front end 102 faces the sweeping roller 26. The flap 92 can be placed against the base 16 to be cleaned via the section 100.

Section 100 is made primarily of a rubber material. Section 100 forms a contact lip for the flap 92 against the floor 16 to be cleaned.

Side walls 104 are attached to the base 98 and are spaced apart from each other. The side walls 104 extend transversely and, in particular, vertically away from the base 98. They do not project into the area 100.

In one embodiment, the side wall 104 has a triangular shape (compare Figures 3 and 6 ), with a first leg 106 and a second leg 108. The first leg 106 and the second leg 108 each start from the base 98 and from opposite ends of the base 98 and then intersect.

The first leg 106 is shorter than the second leg 108, with the first leg 106 bordering the area 100, and the second leg 108 leading to the area at the pivot bearing 94.

With reference to the side wall 104 and a distance above the floor 98, the flap 92 has a greater height at the area 100 than in the area of the pivot bearing 94, with this height decreasing continuously from the area 100 towards the pivot bearing 94.

The base 98 of the flap 92 forms a guide surface for sweepings to transport them into the sweepings container 44. The side walls 104 form guide limits to hold sweepings laterally (in the flap 92) and prevent them from falling out laterally. This in turn enables that Essentially, all the sweepings that reach flap 92 are also transported into the sweepings container 44.

As explained in more detail below, the flap 92 with its flexible section 100 forms a type of sweeping shovel or ramp in the sweeping operation of the sweeper 10.

The sweeper 10 includes a movement mechanism 110 for the flap 92. The movement mechanism 110 in turn includes a lever mechanism or linkage mechanism 112.

It is specifically provided that the movement mechanism 110 comprises a first part, which is assigned to a side wall 104, and a second part, which is assigned to the corresponding opposite side wall. The first part and the second part are basically identical in design, with the Figures 1 to 5 Only a part is shown.

It is specifically provided that the corresponding movement mechanism 110 is arranged outside the sweepings container 44 and is positioned, for example, in an intermediate space between the sweepings container 44 and the corresponding first side wall 70 (first part) or the second side wall (second part), at least in a partial area.

When the elements of the movement mechanism 110 are described below, reference is made to one part (first part or second part). The corresponding elements are then also present in the other part. The first part and the second part are synchronized.

The movement mechanism 110 comprises a bridge element 114. The bridge element 114 is movably mounted relative to the chassis 12. In one embodiment, the bridge element 114 is pivotally mounted. The pivot bearing 116 is located on the corresponding first side wall 70. or second side wall. A pivot axis 118 is parallel to the mounting plane 18 or parallel to the rotation axis 28 of the sweeping roller 26.

The bridge element 114 has a starting position 120 ( Figures 3 , 4 ) which is a basic position of the bridge element 114.

A first actuator 122 is coupled to the bridge element 114. The first actuator is, in particular, a hydraulic or pneumatic cylinder 124 with a base 126 and a moving element 128 (cylinder piston). The cylinder 124 is pivotably coupled to the bridge element 114 via its base 126, with a pivot axis parallel to the pivot axis 118. A corresponding coupling point 129 is spaced apart from the pivot bearing 116.

The moving element 128 (the piston) is articulated at its end to a first web 130. The first web 130 is articulated to a pivot bearing 132, which is fixedly positioned relative to the chassis 12. One axis of rotation of the pivot bearing 132 is parallel to the pivot axis 118.

The first bridge 130 is connected to a second bridge 134, and in particular is connected in a rotationally fixed manner.

In particular, a pivoting of the first web 130 on the pivot bearing 132 (and relative to the movement element 128) causes a coordinated and especially synchronous movement of the second web 134.

A third web 136 is articulated to the second web 134 via a pivot bearing 138. One axis of rotation of the pivot bearing 138 is parallel to the swivel axis 118.

The third web 136 is articulated to the flap 92, and in particular to the corresponding side wall 104, via a pivot bearing 140. One axis of rotation of the pivot bearing 140 is parallel to the pivot axis 118.

The pivot bearing 138 allows the distance between the pivot bearing 132 and the pivot bearing 140 to be adjusted depending on the rotational position of the first web 130. The corresponding rotational position of the first web 130 is in turn set by the first actuator 122 and thereby by the linear position of the movement element 128. The actuator 122 allows the corresponding pivot position of the flap 92 on the pivot axis 96 to be set.

In Figure 4 A first position 142 of the flap 92 is shown. In this first position 142, the flap 92 is pivoted away from the installation plane 18 and the opening 82 is closed by the flap 92 towards the installation plane 18 and towards the sweeping roller 26.

The first position 142 of flap 92 is not a cleaning operating position. The first position 142 for flap 92 is set specifically for a non-cleaning journey of the sweeper 10 to or from a work site.

In the illustrated embodiment, the first position 142 of the flap 92 is reached when the movement element 128 is extended to the base 126 ( Figure 4 This means that, compared to the retracted position (compare Figure 3 ; see below) a distance of a pivot point 144 of the first web 130 to the movement element 128 to the pivot point 129 is greater than in a second position 146 of the flap 92 (compare Figure 3 ).

The second position 146 of flap 92 ( Figure 3 ) is an operational position for a cleaning company.

In the second position 146 of flap 92, the movement element 128 is retracted (the distance between pivot point 144 and pivot point 129 is minimized). In particular, in the second position 146, the first web 130, the second web 134, and the third web 136 lie on a straight line.

The flap 92 is pivoted in the second position 92 onto the installation level 18 and in particular the area 100 then touches the floor 16 to be cleaned.

The flap 92 is positioned relative to the mounting surface 18 such that the base 98 of the flap 92 lies at an acute angle to the mounting surface 18 and forms an inclined plane towards the floor 16 to be cleaned. The flap 92 then forms a ramp via its base 98. Starting from the pivot bearing 94, the base 98 has a decreasing distance to the mounting surface 18 towards the area 100.

In the second position 146, the rotating sweeping roller 26 can pick up sweeping material from the floor 16 to be cleaned, throw it towards the opening 82, whereby the flap 92 then forms a guiding device for sweeping material for conveyance into the sweeping material container 44.

In the second position 146, the flap 92 forms a type of sweeping shovel which rests against the floor 16 to be cleaned over the area 100 (the flexible lip) (or has at most a minimum distance of, for example, at most 10 mm or less).

In the first position 142, the flap 92 functions as a closing element. In the second position 146, the flap 92 functions as a sweeping shovel, which forms a guiding device for the path of the sweeping material from the sweeping roller 26 through the opening 82 into the sweeping material container 44.

In the first position 142 and the second position 146 of flap 92, the bridge element 114 is in its starting position 120.

On one underside of the chassis 12, between the sweeping material collection device 54 and the installation level 18, there is a space 148 (compare, for example, Figure 3 ) present. Towards the sweeping roller 26, this space 148 is blocked in the second position 146 by the flap 92 with the area 100.

In the first position 142 of flap 92, this space 148 is open towards the sweeping roller 26.

The flap 92 has (at least) a third position 150 ( Figure 5 ) where this third position 150 lies between the first position 142 and the second position 146.

In the third position 150, the flap 92 is raised relative to the mounting surface 18, and the flap 92, with its area 100, does not touch the floor 16 to be cleaned. The space 148 is thus open towards the sweeping roller 26; a passage 152 is formed under the debris collection device 54 and the flap 92 towards the sweeping roller 26.

A minimum height 154 of this passage 152 is at least 20 mm and in particular at least 25 mm and preferably at least 30 mm.

The minimum height 154 refers in particular to a minimum distance of the area 100 (for example at a front edge of the area 100 towards the sweeping roller 26) to the installation level 18.

In the third position 150 of the flap 92, sweeping material can pass under the sweeping machine 10 and thereby under the sweeping material collection device 54 towards the sweeping roller 26 when it is driven over by the sweeping machine 10.

In the second position 146 of the flap 92, debris below the debris collection device 54 is displaced by the flap 92 in the forward direction 38 when the sweeper 10 passes over it. In the second position 146, the flap 92 acts, in a sense, as a plow.

By bringing the flap 92 into the third position 150, access to the sweeping roller 26 is enabled for this sweeping material.

A second actuator 156 is provided for setting the third position 150. In the illustrated embodiment, the second actuator 156 acts on the bridge element 114 and moves the bridge element 114 from its initial position 120 to the corresponding position. This movement of the bridge element 114 from the initial position 120 moves and, in particular, displaces the first actuator 122 with base 126 and movement element 128 as a whole, which in turn affects the first web 130 and thus also the second web 134 and the third web 136.

This movement of the bridge element 114 causes the flap 92 to be raised from the second position 146 to the third position 150 ( Figure 5 ).

The second actuator 156 is mechanically coupled to the first actuator 122 via the bridge element 114. Activation of the second actuator 156 causes the first actuator 122 to move as a whole, thus pivoting the flap 92 about the pivot axis 96. The pivoting is such that the passage 152 is just opened, and the third position 150 is below the first position 142.

In one embodiment, the second actuator 156 is an electric motor, and in particular a linear motor 158. This linear motor 158 has a linearly movable rod 160. The rod 160 is coupled to the bridge element 114 at a distance from the pivot bearing 116.

A displacement position of the rod 160 determines a rotation position of the bridge element 114 on the pivot bearing 116.

In the first position 142 and the second position 146, the second actuator unit 156 with its linear motor 148 is not active and the rod 160 is positioned so that the bridge element 114 is in its starting position 120 ( Figures 3 , 4 ).

When the second actuator 156 is activated, the rod 160 is moved and, for example, pivoted in the direction of the sweeping roller 26 (compare Figure 5 ) that the first actuator 122 with the base 126 and the movement element 128 is moved towards the sweeping roller 26. This in turn causes the flap 92 to be raised from the second position 146 and brings the flap into the third position 150 with the passage 152 open.

The third position 150 of flap 92 was described above. It is possible that there is exactly one third position 150, or that there are several third positions 150. If there are multiple third positions 150, they can be set in steps or continuously.

In the illustrated embodiment of the sweeper 10, the second actuator 156 is arranged above the first actuator 122 with respect to a vertical direction transverse to the installation plane 18.

The first actuator unit 122 and the second actuator unit 156 can be activated using the operating device 52.

It is generally intended that flap 92 is operated by an operator for the transition from the first position 142 to the second position 146 and for holding in the second position 146, as well as for the transition from the second position 146 to the first position 142 and for holding the first position 142. Only a brief activation process is necessary at the operating device 52, and no operator intervention is required to hold the position. For example, if the flap 92 is in the first position 142, then a brief press of the button is sufficient to move the flap 92 from the first position 142 to the second position 146 and hold it there. Similarly, a brief press of the button is sufficient to move the flap from the second position 146 to the first position 142 and hold it there.

The operating device 52 is designed such that continuous operator intervention is necessary to maintain the third position 150. For example, the operating device 52 includes a push button 162 (see figure). Figure 1 ), which is assigned to the second actuator unit 156. If the button 162 is not pressed, then the bridge element 114 is in its initial position 120.

When button 162 is pressed, the second actuator 156 is activated, shifting the rod 160 and pivoting the bridge element 114, as described above. Button 162 must be pressed for this activation, and it must also be pressed to maintain the third position 150. When an operator releases button 162, the rod 160 returns to its starting position (automatically), and the bridge element 114 automatically returns to its starting position 120. The flap 92 then automatically moves to the second position 146. Without active operator intervention via button 162, the flap 92 will not remain in the third position 150.

This allows the operator to briefly (the duration of which is determined by how long they press button 162) move the flap 92 from its second position 146 to the third position 150 during a sweeping operation. Sweeping debris which, in the second position 146, cannot reach the sweeping roller 26 due to the locking effect of the flap 92 towards the mounting level 18, can then be moved to the third position 150. If material can reach it, it can then, due to the passage 152 released in the third position 150, reach the sweeping roller and be carried along by it. Sweeping material can thus enter the space in front of the sweeping roller 26 and between the flap 92.

An operator then lowers the flap 92 back into the second position 146 (by releasing the button 162) and the corresponding sweeping material can then be conveyed through the flap 92 into the sweeping material container 44.

The sweeper 10 according to the invention functions as follows:
During a non-cleaning run, for example to or from a deployment site, flap 92 is in the first position 142. This closes the opening 82 through flap 92 (compare Figure 4 ).

For sweeping operation, the operator moves flap 92 to the second position 146 (compare Figure 3 The sweepings can then be conveyed through the flap into the sweepings container 44 by the sweeping roller 26 (which is lowered onto the floor 16 to be cleaned).

If an operator detects larger accumulations of waste on the floor 16 to be cleaned, which are particularly likely to be moved along the floor 16 by the sweeper 10, then they press button 162 and the flap 92 moves into (at least one) third position 150. Such accumulations of waste ("light waste") can then pass through the passage 152 to the sweeping roller 26. By releasing button 162, the operator ensures that the flap 92, in its function as a sweeping shovel, returns to its corresponding operational position (the second position 146) in order to convey the sweepings, including the previously passed light waste, into the waste container 44.

Bringing the position to 150 was described above using an operator intervention.

In one variant of an embodiment, it is provided that a sensor device 164 (compare) is attached to the chassis of the flap 92. Figure 3 ) is positioned to monitor room 148 for the accumulation of "light waste". Sensor device 164 is, for example, an optical sensor device or a camera sensor device.

The sweeper 10 includes a control unit 166 (compare Figure 1 ), which is coupled to the sensor device 164. The control device 166 evaluates, in particular, signals from the sensor device 164 regarding the accumulation of "light waste" in the chamber 148. If an accumulation or excessive accumulation is detected, the control device 166 activates the second actuator device 156, which then briefly moves the flap 92 to the third position 150 in order to open the passage 152 to the sweeping roller 26.

The third position 160 is held for a relatively short period of time, for example 10 s, 20 s, or 30 s. Subsequently, the second actuator 156 is controlled so that the flap 92 automatically returns to the second position 146.

Another embodiment of a sweeper 168, which is in the Figure 7 and 8 The embodiment shown is basically designed the same as the sweeper 10. In this embodiment, a second actuator 170 is provided, which also acts on a bridge element 114', wherein the second actuator 170 is positioned in particular between the first actuator 122 and the installation level 18.

The second actuator 170, for example, is an electric motor which acts directly on the pivot bearing 116 to pivot the bridge element 114'.

Otherwise, the second sweeper 168 works as described above.

Reference symbol list

10

Sweeper (first embodiment)

12

chassis

14

Driving equipment

16

floor to be cleaned

18

Installation level

20

Front wheel assembly

22

Rear wheel assembly

24

bottom

26

Sweeping roller

28

axis of rotation

30

Bristle bundles

32

Swing mechanism

34

front end

36

Rear end

38

forward drive device

40

Construction

42

Housing

44

Sweeping waste container

46

seat

47

Hydraulic drive

48

Control element

50

steering wheel

52

Operating device

54

Sweeping waste collection device

56

Side brush attachment

58

holder

60

Page level

62

Bristle holder

64

axis of rotation

66

drive

68

Direction of rotation

70

first side wall

72

Floor

74

front wall

76

first area

78

second area

80

back wall

82

opening

84

first forehead end

86

side skirt

88

bottom

90

Top

92

flap

94

swivel bearing

96

Swivel axis

98

Floor

100

Area

102

front end

104

side wall

106

first thigh

108

second thigh

110

Movement mechanism

112

Lever mechanism

114

Bridge element

114'

Bridge element

116

swivel bearing

118

Swivel axis

120

Starting position

122

first actuator setup

124

cylinder

126

base

128

Movement element

129

steering point

130

first jetty

132

pivot bearing

134

second jetty

136

third jetty

138

pivot bearing

140

pivot bearing

142

position

144

pivot point

146

second position

148

Space

150

third position

152

passage

154

Minimum height

156

second actuator

158

Linear motor

160

rod

162

button

164

Sensor device

166

Control unit

168

Sweeper (second embodiment)

170

second actuator

Claims (18)

1. Sweeping machine, comprising:

   - a chassis (12);

   - a travelling device (14) which is arranged at the chassis (12) and which defines a support plane (18) of the sweeping machine for a floor (16) to be cleaned;

   - at least one sweeping roller (26) which is rotatable with an axis of rotation (28) at least approximately parallel to the support plane (18);

   - a sweepings receiving device (54) which comprises at least one sweepings container (44) and comprises at least one opening (82);

   - at least one flap (92) which is pivotably arranged at the sweepings receiving device (54) and which is associated with the at least one opening (82), wherein the at least one flap (92) has at least one first position (142) in which the sweepings receiving device (54) at the at least one opening (82) thereof is closed off by the at least one flap (92), and has a second position (146) which is a position utilized for a sweeping mode, and wherein, when in a sweeping mode, sweepings are conveyed through the at least one opening (82) and into the at least one sweepings container (44) by way of the at least one sweeping roller (26), and

   - a first actuator device (122), which effects pivotal movement of the at least one flap (92) between the first position (142) and the second position (146),

   characterized in that the at least one flap (92) has at least one third position (150) in which the at least one flap (92) is raised relative to the support plane (18) and in which, between the at least one flap (92) and the support plane (18), is formed a passage (152) for sweepings towards the at least one sweeping roller (26), and in that the at least one flap (92) has associated therewith a second actuator device (156; 170) for bringing the at least one flap (92) into the at least one third position (150).
2. Sweeping machine in accordance with claim 1, characterized in that, in the second position (146) of the at least one flap (92), at least one of the following exists:

   - the at least one flap (92) is in contact with the support plane (18) at a front end thereof which faces towards the at least one sweeping roller (26), or said front end is spaced a distance relative to the support plane (18) that is no more than 1 cm;

   - the passage (152) for sweepings between the at least one sweeping roller (26) and an end of the chassis (12) is blocked by the at least one flap (92);

   - the at least one flap (92) forms, towards the at least one sweeping roller (26), a guide device for guiding sweepings into the at least one sweepings container (44);

   - the at least one flap (92) forms a dustpan which, in particular, is in contact against the support plane (18);

   - the at least one flap (92) forms a ramp towards the at least one sweepings container (44).
3. Sweeping machine in accordance with claim 1 or 2, characterized by at least one of the following:

   - a pivot axis (96) for the pivoting capability of the at least one flap (92) is at least approximately parallel to the axis of rotation (28) of the at least one sweeping roller (26);

   - the at least one flap (92) has a portion (100) made of a flexurally flexible material which serves for placing the at least one flap (92) in contact against the floor (16) to be cleaned and which is associated with the at least one sweeping roller (26);

   - a pivot axis (96) of the at least one flap (92) is spaced a height distance relative to the support plane (18);

   - the at least one flap (92) is arranged on an underside of the chassis (12) that faces towards the support plane (18);

   - the at least one opening (82) has an upper side (90) and has an underside (88) which faces towards the support plane (18), and a pivot bearing (94) of the at least one flap (92) is positioned in the area of the underside (88).
4. Sweeping machine in accordance with any one of the preceding claims, characterized in that the sweeping machine has a forward travel direction (38) and the at least one sweeping roller (26), when in a sweeping mode, has a direction of rotation (68) which is parallel to the forward travel direction (38) on the floor (16) to be cleaned, and in particular
   characterized in that the sweeping machine has a front end (34) and the at least one flap (92) is positioned between the front end (34) and the at least one sweeping roller (26).
5. Sweeping machine in accordance with any one of the preceding claims, characterized by at least one of the following:

   - in the at least one third position (150) of the at least one flap (92), the passage (152) between the at least one flap (92) and the support plane (18) has a minimum height of at least 20 mm and, in particular, at least 25 mm and, in particular, at least 30 mm;

   - in the at least one third position (150), a front end of the at least one flap (92) which faces towards the at least one sweeping roller (26) is spaced a distance relative to the support plane (18);

   - in the at least one third position (150), a front end of the at least one flap (92) is spaced a distance relative to the support plane (18) that is no more than 150 mm, in particular no more than 100 mm, and in particular no more than 80 mm;

   - the at least one third position (150) is between the first position (142) and the second position (146);

   - a pivoting direction of the at least one flap (92) from the second position (146) to the third position (150) is in a direction away from the support plane (18);

   - a pivoting direction of the at least one flap (92) from the second position (146) to the first position (142) is in a direction away from the support plane (18).
6. Sweeping machine in accordance with any one of the preceding claims, characterized in that articulated to the at least one flap (92) is a lever mechanism (112) and/or a linkage mechanism which is coupled to the first actuator device (122).
7. Sweeping machine in accordance with any one of the preceding claims, characterized in that the second actuator device (156; 170) is coupled, and is in particular mechanically coupled, to the first actuator device (122), and in particular in that the first actuator device (122) is articulated to the second actuator device (156; 170).
8. Sweeping machine in accordance with any one of the preceding claims, characterized in that the second actuator device (156; 170) is configured and/or arranged such that, starting from the second position (144) of the at least one flap (92), it brings the at least one flap (92) into the at least one third position (150), and/or such that, starting from the at least one third position (150), it brings the at least one flap (92) into the second position (146).
9. Sweeping machine in accordance with any one of the preceding claims, characterized in that the first actuator device (122) comprises a base (126) and at least one movement element (128), wherein the at least one movement element (128) is movable, and is in particular displaceable, relative to the base (126), and in that the at least one movement element (128) is articulated to the at least one flap (92) or to a lever mechanism (112) and/or a linkage mechanism for the at least one flap (92), and in particular
   characterized in that the second actuator device (156; 170) is coupled to the base (126) and, in particular, effects movement of the combination of the base and the at least one movement element (128) together.
10. Sweeping machine in accordance with any one of the preceding claims, characterized in that the second actuator device (156; 170) is coupled to the first actuator device (122) such that the first actuator device (122) is moved as a whole via the second actuator device (156; 170).
11. Sweeping machine in accordance with any one of the preceding claims, characterized by at least one bridge element (114; 114') which is positioned movably, and in particular pivotably, with respect to the chassis (12), and characterized in that the first actuator device (122) is articulated to the at least one bridge element (114; 114'), and in that the second actuator device (156; 170) is coupled to the at least one bridge element (114; 114'), wherein a movement of the at least one bridge element (114; 114') is effectuatable by the second actuator device (156; 170), which movement leads to a movement of the first actuator device (122), and in particular
    characterized in that, in a transition from the second position (146) of the at least one flap (92) into the at least one third position (150) of the at least one flap (92), the second actuator device (156; 170) effects a movement, and in particular a pivotal movement, of the at least one bridge element (114; 114') starting from an initial position (120) of the at least one bridge element (114; 114').
12. Sweeping machine in accordance with any one of the preceding claims, characterized in that, in the transition between the first position (142) of the at least one flap (92) and the second position (146) of the at least one flap (92), the second actuator device (156; 170) is not activated and, in particular, at least one movable bridge element (114; 114') to which the first actuator device (122) is coupled is fixed in place in an initial position (120).
13. Sweeping machine in accordance with any one of the preceding claims, characterized by an operating device (52) for an operator for controlling the first actuator device (122) and the second actuator device (156; 170), with at least one of the following:

    - the operating device (52) is configured such that holding the at least one flap (92) in the at least one third position (150) requires continuous active operator intervention, in particular wherein, upon termination of the active operator intervention, the at least one flap (92) automatically goes to the second position (146);

    - holding the at least one flap in the first position (142) and/or in the second position (146) does not require continuous operator intervention, and in particular

    characterized in that the operating device (52) for the second actuator device (156; 170) comprises a pushbutton (162), wherein, by actuating and holding the pushbutton (162), the at least one flap (92) is brought into and held in the at least one third position (150), and upon termination of a holding action on the pushbutton (162), the at least one flap (92) automatically goes from the at least one third position (150) to the second position (146).
14. Sweeping machine in accordance with any one of the preceding claims, characterized in that the sweepings receiving device (54) comprises a first side wall (70) and an opposing second side wall, wherein the at least one flap (92) is positioned between the first side wall (70) and the second side wall, and wherein the first side wall (70) has a first end face (84) which faces towards the at least one sweeping roller (26), and the second side wall has a second end face which faces towards the at least one sweeping roller, and in that the at least one opening (82) is set back relative to the first end face (84) and the second end face in a direction which is transverse to the axis of rotation (28) of the at least one sweeping roller, and in particular
    characterized in that the at least one flap (92) is located between the first side wall (70) and the second side wall.
15. Sweeping machine in accordance with any one of the preceding claims, characterized by at least one of the following:

    - the sweeping machine is configured as a front loader machine in which the sweepings receiving device (54) is arranged between a front end (34) of the sweeping machine and the at least one sweeping roller (26);

    - the sweeping machine is configured as a self-propelled machine;

    - the sweeping machine is configured as a ride-on machine or as a walk-behind machine;

    - filling the at least one sweepings container (46) works on the dustpan principle, wherein the at least one flap (92) forms a dustpan.
16. Sweeping machine in accordance with any one of the preceding claims, characterized by a sensor device (164) which monitors a space (148) with respect to the accumulation of sweepings therein, wherein the space (148) is located in front of the at least one flap (92) and in front of the passage (152), in particular with at least one of the following:

    - the sensor device (164) is located at the chassis (12) with a field of view towards the support plane (18);

    - a control device (166) is provided to which the sensor device (164) is operatively coupled for signal communication therewith, and which control device (166) controls the second actuator device (156; 170); and in particular, upon detection of a certain accumulation of sweepings in the space (148) in front of the passageway (152) with the at least one flap (92) in the second position (146), the control device (166) automatically controls the second actuator device (156; 170) in order to bring the at least one flap (92) into the at least one third position (150), preferably wherein the at least one third position (150) is held for a certain period of time which, in particular, is no more than 30 s, after which time the at least one flap (92) is automatically brought into the second position.
17. Method for operating a sweeping machine in accordance with any one of the preceding claims, in which the at least one flap (92) is brought into the at least one third position (150) in order to open, towards the at least one sweeping roller (26), the passage (152) for sweepings between the at least one flap (92) and the support plane (18), followed by bringing the at least one flap (92) into the second position (144) in order to bring sweepings into the at least one sweepings container (46).
18. Method for operating a sweeping machine in accordance with claim 17, characterized by at least one of the following:

    - the second actuator device (156; 170) is coupled to the first actuator device (122) such that the first actuator device (120) is moved as a whole via the second actuator device (156; 170);

    - a sensor device (164) is provided which monitors a space (148) with respect to the accumulation of sweepings, wherein the space (148) is located in front of the at least one flap (92) and in front of the passage (152);

    - a control device (166) is provided to which the sensor device (164) is operatively coupled for signal communication therewith, and which control device (166) controls the second actuator device (156; 170), and in particular, upon detection of a certain accumulation of sweepings in the space (148) in front of the passageway (152) with the at least one flap (92) in the second position (146), the control device (166) automatically controls the second actuator device (156; 170) in order to bring the at least one flap (92) into the at least one third position (150), preferably wherein the at least one third position (150) is held for a certain period of time which, in particular, is no more than 30 s, after which time the at least one flap (92) is automatically brought into the second position (146).