EP3417756B1 - Machine de nettoyage du sol dotée d'un réglage d'appui de brosse - Google Patents

Machine de nettoyage du sol dotée d'un réglage d'appui de brosse Download PDF

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Publication number
EP3417756B1
EP3417756B1 EP18172930.2A EP18172930A EP3417756B1 EP 3417756 B1 EP3417756 B1 EP 3417756B1 EP 18172930 A EP18172930 A EP 18172930A EP 3417756 B1 EP3417756 B1 EP 3417756B1
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EP
European Patent Office
Prior art keywords
actuator
end position
coupling
cleaning head
coupling end
Prior art date
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Active
Application number
EP18172930.2A
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German (de)
English (en)
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EP3417756A1 (fr
Inventor
Carsten Protz
Philip Jürß
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Hako GmbH
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Hako GmbH
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
    • A47L11/4055—Movement of the tools or the like perpendicular to the cleaning surface for lifting the tools to a non-working position
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/292—Floor-scrubbing machines characterised by means for taking-up dirty liquid having rotary tools
    • A47L11/293—Floor-scrubbing machines characterised by means for taking-up dirty liquid having rotary tools the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • A47L11/305—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools the tools being disc brushes

Definitions

  • the present invention relates to a floor cleaning machine with a machine frame, with a chassis attached to the machine frame for moving the floor cleaning machine over a floor surface to be cleaned and with a cleaning head which is mounted on the machine frame in a height-adjustable manner, so that the cleaning head can be lowered towards the floor surface and lifted off .
  • Such floor cleaning machines are used to clean large floor areas, for example in public buildings or supermarkets.
  • the machines are operated in such a way that when driving over such a floor surface to be cleaned, dirt present on the floor surface is first loosened with the help of the cleaning head and the preferably driven brushes provided thereon with liquid applied by the cleaning head. With the help of a suction base, the dirt-laden liquid is then sucked off again.
  • the cleaning head is attached to the machine frame of the floor cleaning machine in a height-adjustable manner in order to ensure that the cleaning head is not necessarily in contact with the floor surface.
  • the cleaning head can be lowered onto the floor surface to be cleaned.
  • an actuator is generally used to raise and lower the cleaning head.
  • the cleaning head When operating a floor cleaning machine, it is desirable for an operator to be able to choose between at least two levels of pressure of the cleaning head on the floor surface, depending on the degree of contamination of the floor surface. For example, in the case of normal soiling, the cleaning head can be operated with a lower contact pressure (low contact pressure) on the floor surface than in the case of a heavily soiled floor surface (high contact pressure). Usually a large contact pressure is generated by the high weight of the cleaning head. However, in order to be able to lift it from the floor surface, a correspondingly large actuator is necessary. Thus, the high weight of the cleaning head or its weight determines a lower force limit of the actuator. In this context, the dimensioning of an actuator is understood to mean a choice of a technical design or the technical design of the actuator with which a certain force is generated.
  • the EP 2 954 817 A1 discloses a floor cleaning machine with a machine frame, a drive designed as an electromechanical linear drive being held on the machine frame, the piston rod of which can be moved in a straight line in a horizontal direction that runs parallel to the floor surface.
  • An adjusting element is provided at a free end of the piston rod, which is guided in a straight line in a guide fixed to the machine frame, so that the adjusting element carries out a purely rectilinear movement.
  • a guide track is formed in an adjusting plate of a cleaning head and has a first section and a second section. The adjusting element engages in the guideway with a pin provided thereon.
  • the US 2013/212814 A1 discloses a floor cleaning machine with a hanging and lifting mechanism.
  • the suspension and lifting mechanism is attached to a frame of the floor cleaning machine with various components, including a frame bracket pivotable about the frame via a vertical pivot axis and a frame bracket connected to a linear actuator.
  • the US 3,790,981 A discloses a floor cleaning machine with a broom holder.
  • the broom holder is attached to a machine frame of the floor cleaning machine via a bracket.
  • a disc broom is rotatably mounted on the broom holder.
  • a floor cleaning machine which has a machine frame, a chassis attached to the machine frame for moving the floor cleaning machine over a floor surface to be cleaned, a cleaning head which is mounted on the machine frame in a height-adjustable manner, so that the cleaning head is lowered towards the floor surface and can be lifted from it, an actuating element which is movably mounted on the machine frame between a first and a second end position and which is coupled to the cleaning head in such a way that the cleaning head is lowered when the actuating element moves towards the first end position and pressed towards the floor surface is and that the cleaning head is lifted from the floor surface when the actuating element moves towards the second end position, and has an actuator which has a first and a second coupling end, the actuator having a drive which is designed so that the distance of the first and second coupling ends can be adjusted between a first actuator end position and a second actuator end position.
  • a floor cleaning machine with a machine frame, with a chassis attached to the machine frame for moving the floor cleaning machine over a floor surface to be cleaned, with a cleaning head which is mounted on the machine frame in a height-adjustable manner, so that the cleaning head can be lowered towards the floor surface and lifted off can, with an actuating element which is movably mounted on the machine frame between a first and a second end position and which is coupled to the cleaning head in such a way that the cleaning head is lowered when the actuating element moves towards the first end position and pressed towards the floor surface and that the cleaning head is lifted from the floor surface when the actuating element moves towards the second end position, with an actuator which has a first and a second coupling end, the actuator having a drive which is designed so that the distance between the first and second Coupling end can be adjusted between a first actuator end position and a second actuator end position, and wherein preferably the distance in the first actuator end position is smaller than in the second actuator end position, the first coupling end of
  • the floor cleaning machine has an adjusting element which is movably mounted on the machine frame between a first and a second end position.
  • the mounting of the adjusting element on the machine frame can be carried out, for example, by a lever element or a linearly adjustable element.
  • the actuating element is coupled to the cleaning head in such a way that when the actuating element moves towards the first end position, the cleaning head is lowered and pressed onto the floor surface to be cleaned.
  • the actuating element is coupled to the cleaning head in such a way that the cleaning head is lifted off the floor surface when the actuating element moves towards the second end position.
  • the floor cleaning machine has an actuator which has a first and a second coupling end.
  • the actuator in turn has a drive which is designed such that the distance between the first and second coupling ends can be adjusted between a first actuator end position and a second actuator end position.
  • the distance in the first actuator end position is preferably smaller than in the second actuator end position.
  • the drive can be, for example, an electrical, mechanical, pneumatic or any other drive that is suitable for adjusting the distance between the two coupling ends.
  • a purely illustrative example of an actuator is a pneumatic cylinder, in which an inner section moves or extends against an outer section when the pneumatic cylinder is subjected to a suitable pressure. Both the inner and the outer sections have a coupling end.
  • the pneumatic cylinder is retracted in the first actuator end position and has a minimum length, and in the second actuator end position the pneumatic cylinder is extended and has a maximum length.
  • the actuator is designed differently and has a structure and/or shape that differs from the pneumatic cylinder.
  • the actuator can be designed as an electrically driven linear actuator.
  • the first coupling end of the actuator is further coupled to the actuating element in such a way that when the first coupling end moves towards the first actuator end position, the actuating element is subjected to a force which drives the actuating element towards the first end position.
  • the actuating element is moved towards the first actuator end position by the first coupling end in such a way that the cleaning head coupled to the actuating element is lowered onto the floor surface in the first end position and pressed against it.
  • the second coupling end of the actuator is coupled to the actuating element in such a way that when the second coupling end moves towards the second actuator end position, the actuating element is subjected to a force which drives the actuating element towards the second end position.
  • the actuating element is moved towards the second actuator end position by the coupling end in such a way that the cleaning head coupled to the actuating element is lifted off the floor surface during the movement into the second end position.
  • the cleaning head coupled to the actuating element is lifted off the floor surface.
  • the two coupling ends of the actuator are preferably furthest apart.
  • the first coupling end of the actuator is moved to the second coupling end of the actuator by means of the drive.
  • the cleaning head is first placed in an intermediate position on the floor surface without any additional contact pressure, ie only by its own weight. If the coupling ends of the actuator are now moved further towards each other, ie the actuator is moved into the first actuator end position, the actuating element is increasingly subjected to a force.
  • the weight of the cleaning head can be chosen to be lower than in the prior art. This means that the positioning and control of the contact pressure of the cleaning head no longer takes place with a high weight of the cleaning head, but essentially with a pressure force.
  • the actuator raises and lowers the light cleaning head and enables the cleaning head to be additionally pressed against the floor surface to be cleaned.
  • the cleaning head is raised in a first direction of movement of the actuator and lowered and pressed in a second direction of movement.
  • due to the lower weight of the cleaning head only a correspondingly low force from the actuator is required for lifting. This allows the actuator to be dimensioned smaller.
  • the actuator is a linear actuator whose longitudinal axis extends between the first coupling end and the second coupling end.
  • the longitudinal axis also describes the axis along which the linear actuator can be moved.
  • An example of a linear actuator is a pneumatic cylinder, in which an inner section moves or extends against an outer section when the pneumatic cylinder is subjected to a suitable pressure. Both the inner and the outer sections each have a coupling end. In the first actuator end position, the pneumatic cylinder is retracted and has a minimum length, and in the second actuator end position, the pneumatic cylinder is extended and has a maximum length.
  • an electrically or hydraulically driven linear actuator can also be used.
  • linear actuators are typically inexpensive and robust components.
  • the use of linear actuators therefore leads to a further simplification of the structure.
  • the linear actuator is slidably mounted on the machine frame in such a way that it can move along its longitudinal axis relative to the machine frame between two end positions.
  • a bearing that can be moved along the longitudinal axis of the machine frame can also be described as a “floating” bearing of the linear actuator.
  • the floating bearing makes it easy to move two coupling ends relative to each other with just one linear actuator. In other words, floating storage of the linear actuator allows the cleaning head to be raised and lowered on the floor surface to be cleaned and applying a variable contact force to the cleaning head.
  • the distance between the coupling ends in the first actuator end position is smaller than in the second actuator end position
  • the machine frame has a stop element which points towards the second coupling end and a movement of the second coupling end along the longitudinal axis in a direction pointing towards the first coupling end limited.
  • the stop element serves as an abutment for the actuator when moving towards the first actuator end position. This limitation of the movement of the second coupling end allows the actuator to exert a force on the actuating element in the direction of the first end position via the first coupling end on the way to the first actuator end position.
  • the distance between the coupling ends in the first actuator end position is greater than in the second actuator end position
  • the machine frame has a stop element that points to the second coupling end and a movement of the second coupling end along the longitudinal axis in a direction pointing away from the first coupling end.
  • the stop element serves as an abutment for the actuator during the movement towards the first actuator end position, so that the actuator can also exert a force on the actuator in the direction of the first end position via the first coupling end on the way to the first actuator end position.
  • the actuating element has a lever element, the lever element being pivotally connected to the machine frame about a pivot axis between the first and the second end position, the pivot axis preferably running parallel to the floor surface to be cleaned, the cleaning head being spaced from the pivot axis is held on the lever element, wherein the lever element is coupled to the first coupling end at a distance from the pivot axis in such a way that when the first coupling end moves towards the first actuator end position, a force is exerted on the lever element towards the first end position, and wherein the lever element is coupled to the second coupling end at a distance from the pivot axis in such a way that when the second coupling end moves towards the second actuator end position, a force towards the second end position is exerted on the lever element.
  • the lever element can be designed, for example, as a one-armed or two-armed lever. It is also conceivable that the pivot axis is not aligned parallel to the floor surface.
  • lever element has the advantage that it further simplifies the entire structure.
  • connection between the first coupling end of the actuator and the lever element has a biasing element which is designed to bias the lever element towards the first end position when the first coupling element moves towards the first actuator end position.
  • the biasing element can, for example, have a spring which applies a tensile or compressive force to the lever element.
  • the prestressing element fulfills two functions. On the one hand, the lever element is subjected to the maximum contact pressure specified by the prestressing element. On the other hand, the flexibility of the biasing element allows the cleaning head to quickly adjust its vertical position. Such an adjustment may be necessary, for example, on very uneven floor surfaces in order to be able to move the cleaning head over the floor surface without causing damage.
  • the cleaning head is a brush head and the floor cleaning machine is a scrubber dryer.
  • the cleaning head is a brush head of a sweeper or another type of floor cleaning machine.
  • the cleaning head is a work unit of a polishing machine. Both the scrubber dryer, the sweeper and the polishing machine can be hand-operated or have a driver's seat and/or stand from which the floor cleaning machine can be operated, or they can work autonomously.
  • Fig. 1 shows a side view of an embodiment of a floor cleaning machine according to the invention.
  • the floor cleaning machine has a machine frame 1 on which a chassis is provided, of which only the rear wheels 3 are shown in the figures, so that the floor cleaning machine can drive over a floor surface 5 to be cleaned.
  • a suction device designed as a suction base 7 is attached to the machine frame 1, with which liquid can be sucked off the floor surface 5 to be cleaned.
  • a dirty water tank 9 is attached to the machine frame 1, which has an inlet 11, and the inlet 11 and the suction cup 7 are connected to one another via a dirty water supply line 13.
  • the dirty water tank 9 has a lid, and an upward-pointing opening is closed by means of the lid 14 of the dirty water tank 9, which can be pivoted about a pivot axis S, but can be opened by pivoting the lid 14.
  • a suction 15 is provided on the lid 14, the suction side of which is connected to the inner volume of the dirty water tank 9 via a suction line 17 and a connection 19 in the lid 14.
  • the connection is mounted in a side wall of the dirty water tank 9.
  • a cleaning head 21 is held in a height-adjustable manner on a brush pressure adjustment 23. With the help of the brush pressure adjustment 23, it is possible to lower the cleaning head 21 towards the floor surface and lift it away from it.
  • the first end position denotes the state in which the cleaning head 21 or an adjusting element, which is movably mounted on the machine frame 1 and is coupled to the cleaning head 21, is lowered onto the floor surface 5 and pressed.
  • the second end position denotes the state in which the cleaning head 21 or the adjusting element is lifted off the floor surface.
  • the cleaning head 21 is in this exemplary embodiment a scrubber dryer driven in rotation via a motor (not shown) and has brush elements 25 which can engage with the floor surface 5.
  • the cleaning head 21 is therefore the brush head of a scrubber dryer.
  • the cleaning head 21 represents a sweeping device of a sweeper or the work unit of a polishing machine.
  • Figs. 2a and 2b show a side view of the embodiment of the brush pressure adjustment 23, in which the cleaning head 21 is arranged in the second end position, ie in a raised position.
  • Fig. 2a shows a holding frame 27 of the brush pressure adjustment, which is adapted to be mounted on the machine frame 1 and on which the in Fig. 2b shown means for raising and lowering the cleaning head 21 are attached.
  • FIG. 2a Shows in detail Fig. 2a the holding frame 27 with a first and second guide groove 29, 31, which are aligned parallel to one another and to a longitudinal axis L of the holding frame 27 and spaced apart from one another.
  • a first and a second guide element 33, 35 are slidably guided in the guide grooves 29, 31.
  • the first guide member 33 is adapted to be connected to a first coupling end (not shown) of an actuator (not shown).
  • the second guide member 35 is adapted to be connected to a second coupling end (not shown) of the actuator.
  • the actuator has a drive that is designed so that the distance between the first and second coupling ends can be adjusted between a first actuator end position and a second actuator end position. The distance in the first actuator end position is smaller than in the second actuator end position.
  • the actuator can, for example, be a linear actuator whose longitudinal axis extends between the first coupling end and the second coupling end.
  • An example of a linear actuator is a pneumatic cylinder.
  • the linear actuator is slidably mounted on the machine frame 1 or the holding frame 27 in such a way that it can move, for example, along its longitudinal axis relative to the machine frame between two end positions.
  • the free movement of the actuator is limited by stop elements in the form of the horizontal limitation of the guide grooves 29, 31.
  • one end of the second guide groove 31 points as a stop element towards the first coupling element in the first guide groove 29 and limits a movement of the second coupling element along the longitudinal axis in a direction pointing towards the first coupling element.
  • the cleaning head 21 has a cable pull at its upper end 37 with a first end 39a 39 coupled.
  • the cable pull 39 is guided over a deflection roller 41 and is coupled to the holding frame 27 at a second end 39b via an eyelet member 43 with an eyelet and a spring 45.
  • the spring 45 keeps the cable 39 under tension in all positions of the second guide element 35.
  • the eyelet member 43 in turn is guided displaceably in the eyelet ⁇ by the second guide element 35.
  • the cleaning head 21 is further coupled at its upper end 37 to a free end 47 of a one-armed lever element 49.
  • a fixed end of the lever element 49 is pivotally connected, for example, to the machine frame 1 at a pivot point D, the axis of rotation or pivot axis at the pivot point D preferably running parallel to the floor surface 5 to be cleaned.
  • the cleaning head 21 is thus held on the lever element 49 at a distance from the pivot axis D.
  • the lever element 49 has an element 53 in an area between its free end 47 and its fixed end 51, which is coupled to the second guide element 33 via a biasing element in the form of a lever spring 55.
  • the upper end 37 of the cleaning head 21 and the lever element 49 form an actuating element to which the cleaning head 21 is coupled.
  • the actuating element is movably mounted on the machine frame 1 between a first and a second end position and is coupled to the cleaning head 21 in such a way that when the actuating element moves towards the first end position, the cleaning head 21 is lowered and pressed towards the floor surface 5 and that the cleaning head 21 is lifted from the floor surface 5 when the actuating element moves towards the second end position.
  • first and second end position of the actuating element is used synonymously with a position of the cleaning head 21 in the embodiment described here.
  • This direct transferability results from the direct coupling of the actuating element with the cleaning head 21, which has the upper end of the cleaning head 37.
  • the actuating element is coupled to the first coupling end of the actuator via the first guide element 33 in such a way that when the first coupling end moves towards the first actuator end position, the actuating element is subjected to a force that moves the actuating element towards the first final position.
  • the actuating element is coupled to the second coupling end of the actuator via the second guide element 35 in such a way that when the second coupling end moves towards the second actuator end position, the actuating element is subjected to a force which moves the actuating element towards the second final position.
  • actuating element and the cleaning head 21 coupled to it are positioned in its lifted position, ie in its second end position.
  • This second end position results directly from the second actuator end position, in which the coupling ends of the actuator are maximally extended relative to one another.
  • the guide elements 33, 35 coupled to the coupling ends are also positioned in the guide grooves 29, 31 at a maximum distance A max from one another.
  • the actuating element or the upper end 37 of the cleaning head 21 is subjected to a total force, which results from two essentially the same directed but different strong partial forces with different points of application on the holding frame 27 .
  • the first partial force results from the coupling of the second guide element 35 with the eyelet member 43 and the resulting loading of the eyelet member 43 with a force which acts parallel to the spring force of the spring 45 and which acts counter to that coupled by means of the cable 39 via the deflection roller 41
  • the weight of the cleaning head 21 acts and lifts the cleaning head 21.
  • the second partial force results from the coupling of the upper end 37 of the cleaning head 21 with the lever element 49.
  • the weight of the lever element 49 leads to a torque directed in the direction of the bottom surface 5 about the pivot point D, although the lever spring 55 produces this torque depending on the Position of the first guide element 33 and the position of the upper end 37 of the cleaning head 21 is influenced.
  • Both partial forces add up in the second actuator end position to form a total force, which results in the cleaning head 21 being lifted off the floor surface 5 to be cleaned.
  • Fig. 3 shows the same structure as in Fig. 2 in an intermediate position of the cleaning head 21.
  • This intermediate position occurs when the cleaning head 21 moves from the second end position into the first end position, ie the cleaning head 21 is lowered and pressed, or the cleaning head 21 moves from the first end position into the second end position , that is, is withdrawn.
  • the actuator is partially retracted.
  • Fig. 3a shows, as a result, that the guide elements 33, 35 connected to the coupling ends have a distance A from one another that is smaller than the distance A max in the second actuator end position.
  • the main difference to the second actuator end position Fig. 2 is the position of the second guide element 35 and thus the position of the eyelet member 43, to which the cleaning head 21 is connected via the cable pull 39.
  • the position of the first actuator end position is the position of the second guide element 35 and thus the position of the eyelet member 43, to which the cleaning head 21 is connected via the cable pull 39.
  • the cleaning head 21 is in the intermediate position, as in Fig. 3b shown, lowered onto the floor surface 5, but not pressed.
  • the total force results from the weight of the cleaning head 21 and the torque of the lever element 49.
  • the now lowered position of the cleaning head 21 and the unchanged position of the first guide element 33 means that the spring 45 and not the guide element 35 generates a tensile force in the cable 39.
  • the guide element 35 therefore no longer acts in the intermediate position. Overall, this results in a reduced overall force compared to the second end position.
  • Fig. 4 shows the same structure as Fig. 2 and 3 in the first end position of the cleaning head, ie the first actuator end position.
  • the actuator is adjusted with the help of the drive in such a way that the two coupling ends and thus the two guide elements 33, 35 in Fig. 4a, b have a minimum distance A min from one another.
  • the main difference to the intermediate position is the position of the first guide element 33, which is now positioned such that it applies a tensile force to the element 53 by stretching the second lever spring 55.
  • this means that the lever element 49 is coupled to the first coupling end at a distance from the pivot axis in such a way that when the first coupling end moves towards the first actuator end position, a force towards the first end position is exerted on the lever element 49.
  • the connection between the first coupling end of the actuator and the lever element 49 has a biasing element in the form of the lever spring 55 on, which is designed to bias the lever element 49 towards the first end position when the first coupling element moves to the first actuator end position.
  • FIG. 5 to 7 The embodiment according to the invention is generally explained using schematic principle sketches.
  • the Figures 5 to 7 show the three positions that the brush pressure adjustment assumes when the cleaning head 21 is moved from a raised position (second end position) into a lowered and pressed position (first end position). When transitioning from the first end position to the second end position, the brush pressure adjustment assumes the positions in the reverse order.
  • Fig. 5 shows an actuator 57 with a first and second coupling end 59, 61.
  • the first coupling end 59 is connected to the first guide element 33 and movably received in the first, stationary guide groove 29.
  • a fixed connection can be, for example, the connection to the machine frame 1.
  • the first guide element 33 is further connected via a first biasing element or the lever spring 55 to an actuating element 63, which has a lever element 49 and the upper end 37 of the cleaning head 21.
  • the lever element 49 is designed as a one-armed lever and is mounted stationary at the pivot point D, but pivotable about an axis of rotation about the pivot point D. As already explained, the axis of rotation can, for example, be parallel or essentially parallel to the bottom surface 5.
  • the lever element 49 is further rotatably coupled to the upper end 37, preferably rotatable about an axis of rotation that is parallel to the axis of rotation of the lever element 49 at the pivot point D.
  • the second coupling end 61 is connected to the second guide element 35.
  • the second guide element 35 is also movably accommodated in the second guide groove 31 in a second receptacle 31.
  • the second receptacle 31 ' is fixed in place via the second spring 45.
  • the second receptacle 31 ' is also connected to the adjusting element 63 at its upper end 37 via the pull cable 39.
  • Fig. 5 is the embodiment of the brush pressure adjustment 23 in the second actuator end position, in which the first and second coupling ends 59, 61 have a maximum distance A max from each other.
  • the first guide element 33 is in a position relative to the first guide groove 29 in which the movement of the first guide element 33 with the first coupling end 59 is limited by the first guide groove 29.
  • the second guide element 35 is in a position relative to the second guide groove 31, which is determined by the maximum travel of the second coupling end 61 of the actuator 57.
  • the actuating element or the upper end 37 and thus the cleaning head 21 is subjected to a force via the connection 39, so that the cleaning head 21 is lifted off the floor surface 5.
  • the control element is now in the second end position.
  • Fig. 6 shows the structure schematically Fig. 5 in an intermediate position.
  • the first and second coupling ends 59, 61 are arranged at a distance A from one another which is smaller than the maximum distance A max but larger than the minimum distance A min of the first actuator end position.
  • the guide elements 33, 35 are arranged relative to the guide grooves 31, 33 and/or the actuator 57 in such a way that the cleaning head 21 is placed on the bottom surface 5 but is not pressed. In this position, the pressure of the cleaning head 21 can be reduced by the spring 45 if the spring 45 is dimensioned accordingly.
  • Fig. 7 finally shows the structure schematically Fig. 6 in the first actuator end position.
  • the first and second coupling ends 59, 61 are arranged at a minimum distance A min from one another.
  • the position of the actuator 57 is determined in the first actuator end position by the stop 65, against which the second coupling end 61 rests, so that the second coupling end 61 is prevented from moving towards the first coupling end 59.
  • the first guide element 33 is positioned relative to the first guide groove 29 in such a way that the first biasing element 55 applies a force to the actuating element 63 or its lever element 49, which presses the cleaning head 21 against the floor surface 5.
  • the control element is now in the first end position.
  • the second coupling element 61 rests on the stop 65, when the actuator 57 is moved towards the first actuator end position, it cannot move relative to the machine frame 1 towards the first coupling end 59. This means that only the first coupling end 59 can move, which then deforms the lever spring 55 and thus determines the force with which the cleaning head 21 is pressed towards the floor surface 5.
  • the vertical position that the cleaning head 21 assumes relative to the floor surface 5 is determined solely by the position of the actuator 57, and the force with which the cleaning head 21 is pressed against the floor surface 5 is set.
  • the force that the actuator 57 itself exerts does not have to be controlled. To set this force, it is sufficient to specify the position that the actuator should assume, which also simplifies the structure in terms of control technology.

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Claims (8)

  1. Machine de nettoyage des sols
    comportant un bâti de machine (1),
    comportant un châssis fixé au bâti de machine (1) pour déplacer la machine de nettoyage des sols sur une surface du sol (5) à nettoyer,
    comportant une tête de nettoyage (21), laquelle est maintenue réglable en hauteur sur le bâti de machine (1) de telle sorte que la tête de nettoyage (21) peut être abaissée vers la surface du sol (5) et relevée depuis celle-ci,
    comportant un élément de réglage, lequel est maintenu mobile sur le bâti de machine (1) entre une première et une seconde positions libres et lequel est accouplé à la tête de nettoyage (21) de telle sorte que la tête de nettoyage (21) est abaissée lorsque l'élément de réglage se déplace jusqu'à la première position de fin de course et est pressée vers la surface du sol (5) et que la tête de nettoyage (21) est relevée depuis la surface du sol (5) lorsque l'élément de réglage est déplacé jusqu'à la seconde position de fin de course,
    comportant un actionneur (57), lequel comporte une première et une seconde extrémité d'accouplement (59, 61), dans laquelle l'actionneur (57) comporte un entraînement, lequel est conçu de telle sorte que la distance des première et seconde extrémités d'accouplement (59, 61) peut être réglée entre une première position de fin de course de l'actionneur et une seconde position de fin de course de l'actionneur, caractérisée en ce que
    la première extrémité d'accouplement (59) de l'actionneur (57) est accouplée à l'élément de réglage de telle sorte que lorsque la première extrémité d'accouplement (59) se déplace vers la première position de fin de course de l'actionneur, l'élément de réglage est soumis à une force, laquelle entraîne l'élément de réglage vers la première position de fin de course et
    dans laquelle la seconde extrémité d'accouplement (61) de l'actionneur (57) est accouplée à l'élément de réglage de telle sorte que lorsque la seconde extrémité d'accouplement (61) se déplace vers la seconde position de fin de course de l'actionneur, l'élément de réglage est soumis à une force, laquelle entraîne l'élément de réglage vers la seconde position de fin de course.
  2. Machine de nettoyage des sols selon la revendication 1, dans laquelle l'actionneur est un actionneur linéaire dont l'axe longitudinal s'étend entre la première extrémité d'accouplement (59) et la seconde extrémité d'accouplement (61).
  3. Machine de nettoyage des sols selon la revendication 2, dans laquelle l'actionneur (57) linéaire est maintenu coulissant sur le bâti de machine (1) de telle sorte qu'il peut se déplacer le long de son axe longitudinal par rapport au bâti de machine (1) entre deux positions de fin de course.
  4. Machine de nettoyage des sols selon la revendication 3, dans laquelle la distance entre la première extrémité d'accouplement (59) et la seconde extrémité d'accouplement (61) dans la première position de fin de course de l'actionneur est inférieure à la distance dans la seconde position de fin de course de l'actionneur, dans laquelle le bâti de machine (1) comporte un élément de butée (65), lequel pointe vers la seconde extrémité d'accouplement (61) et limite un mouvement de la seconde extrémité d'accouplement (.61) le long de l'axe longitudinal dans une direction pointant vers la première extrémité d'accouplement (59).
  5. Machine de nettoyage des sols selon la revendication 3, dans laquelle la distance entre la première extrémité d'accouplement (59) et la seconde extrémité d'accouplement (61) dans la première position de fin de course de l'actionneur est supérieure à la distance dans la seconde position de fin de course de l'actionneur, dans laquelle le bâti de machine (1) comporte un élément de butée (65), lequel pointe vers la seconde extrémité d'accouplement (61) et limite un mouvement de la seconde extrémité d'accouplement (61) le long de l'axe longitudinal dans une direction pointant à l'opposé de la première extrémité d'accouplement (59).
  6. Machine de nettoyage des sols selon l'une quelconque des revendications précédentes, dans laquelle l'élément de réglage comporte un élément de levier (49), dans laquelle l'élément de levier (49) est relié au bâti de machine (1) de manière pivotante autour d'un axe de pivotement (D) entre la première et la seconde position de fin de course, dans laquelle l'axe de pivotement (D) s'étend, de préférence parallèlement à la surface du sol (5) à nettoyer,
    dans laquelle la tête de nettoyage (21) est maintenue sur l'élément de levier (49) espacée de l'axe de pivotement (D),
    dans laquelle l'élément de levier (49) est accouplé à la première extrémité d'accouplement (59) espacée de l'axe de pivotement (D) de telle sorte que, lors du déplacement de la première extrémité d'accouplement (59) vers la première position de fin de course de l'actionneur, une force est appliquée à l'élément de levier (49) vers la première position de fin de course, et
    dans laquelle l'élément de levier (49) est accouplé à la seconde extrémité d'accouplement (61) espacé de l'axe de pivotement (D) de telle sorte que lors du déplacement de la seconde extrémité d'accouplement (61) vers la seconde position de fin de course de l'actionneur, une force est appliquée à l'élément de levier (49) vers la seconde position de fin de course.
  7. Machine de nettoyage des sols selon la revendication 6, dans laquelle la liaison entre la première extrémité d'accouplement (59) de l'actionneur (57) et l'élément de levier (49) comporte un élément de précontrainte (55), lequel est conçu pour précontraindre l'élément de levier (49), lors du déplacement du premier élément d'accouplement (59) vers la première position de fin de course de l'actionneur, vers la première position de fin de course.
  8. Machine de nettoyage des sols selon l'une quelconque des revendications précédentes, dans laquelle la tête de nettoyage (21) est une tête de brosse d'une autolaveuse.
EP18172930.2A 2017-05-30 2018-05-17 Machine de nettoyage du sol dotée d'un réglage d'appui de brosse Active EP3417756B1 (fr)

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DE102019116294A1 (de) * 2019-06-14 2020-12-17 Norbert Werner Selbstreinigende Bodenreinigungsmaschine
IT202100008120A1 (it) * 2021-03-31 2022-10-01 Diversey Inc Apparecchiatura per la pulizia di pavimenti

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US3790981A (en) * 1972-09-15 1974-02-12 B Young Surface sweeping machine equipped with gutter brush
GB8907481D0 (en) * 1989-04-03 1989-05-17 Unilever Plc Floor-cleaning machine
DE4123836C1 (en) * 1991-07-18 1992-12-10 Kuepper-Weisser Gmbh, 7715 Braeunlingen, De Suspension system for road sweeping equipment - has cylinders connected to roller with pistons to control vertical motion
DE102009014560A1 (de) * 2009-03-16 2010-09-23 Alfred Kärcher Gmbh & Co. Kg Auswechselbare Kehrbürsteneinrichtung und Kehrmaschine mit einer derartigen Kehrbürsteneinrichtung
US9498099B2 (en) * 2012-02-16 2016-11-22 Tennant Company Surface maintenance vehicle with compact side brush assembly
EP2954817B1 (fr) 2014-06-11 2016-10-26 Hako GmbH Machine de nettoyage du sol

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