SE461250B - BEFORE TREATMENT OF FLOOR SURFACE MADE MACHINE - Google Patents

Description

461,250 and thus is marketed on the market in various sizes, from larger shovelable machines to smaller hand-operated machines.

It is also known to take measures to robotically control machines. These machines are usually of larger size. The present invention can be considered to relate to a mobile machine. This mobile machine is controlled by an operator, sitting on the machine, along the floor surface, but it can of course also be controlled remotely, either by an operator walking next to the machine or via a robot-controlled system.

Thus, previously known mobile machines are intended primarily to perform a sweeping function, where these are provided with horizontal, rotatable, cylindrical brush units, intended to be able to efficiently brush large areas, and where the machine also has suction devices, to be able to suck thus collecting collected particles.

DESCRIPTION OF THE PRESENT INVENTION TECHNICAL PROBLEM Taking into account the prior art, as described above, it would appear to be a technical problem to be able to designate a machine intended for treating a floor surface, mainly a machine intended for sweeping large floor areas, designed so that it can be easily guided along a desired path by a single wheel and furthermore be adapted to be able to displace a number of rotatable brush units or brushes intended for treatment of the floor surface, preferably, but not exclusively, brush units with a cylindrical surface.

It must also be considered a technical problem to be able to designate a movable machine, which not only solves the above-mentioned technical problem, but also offers an opportunity to be able to easily turn around perpendicular corners and otherwise offer a maneuverability. for certain applications that are superior to prior art designs.

It must also be considered a technical problem to indicate the orientation of the wheels, in relation to the rotatable brush units, that the treatment function around an outer corner can take place by a movement in a single direction, and a stationary or insignificant movement , under the steering around the corner. It must also be considered a technical problem to be able to come to the realization that the stability and steering of machines will be significantly improved if the machine uses three wheels, which support the floor surface and can be rolled along the floor surface, and leave the middle wheel not only without also steering, while a wheel placed on one side of the machine, on the outside, is firmly related to its direction and directed in a straight direction of travel, while a wheel placed on the other side of the machine is pivotable.

It must also be considered a technical problem to be able to come to the realization that an improved pivoting ability around an outer corner is offered in case the fixed wheel is oriented at a longer distance from the middle wheel than the pivotable wheel. Even more qualified is the technical problem to be solved in realizing that a sweeping of an outer corner requires that the fixed wheel be located at double or substantially double distances in relation to the pivotable and that at least one rotatable brush unit is arranged between the fixed wheel. and the swivel wheel and in the vicinity of the swivel wheel.

It must also be considered a technical problem, in order to be able to create a stable balance in a large sliding machine, using three rotatable wheels, to realize the importance of arranging a rotatable brush between the fixed and the swivel wheel, oriented substantially perpendicularly. to the direction of travel and constitute a cylindrical brush unit, which in the event of an imbalance can serve as an additional support.

It must also be considered a technical problem to be able to come to the realization that stability can be further improved by arranging brush units in front of the fixed wheel, preferably two rotatable brush units, formed as cylindrical brush units, and where these further help to stabilize the movement. and the displacement of the machine ~ 461 250 It must also be considered a technical problem to designate a suitable location for the required accumulators and driver's seat in a machine which has succeeded in solving one of the above technical problems, not only in order to make the machine stable and easily pivotable but also easily maneuverable by an operator sitting on the machine.

THE SOLUTION The present invention aims to provide a machine intended for a treatment of a floor surface, which solves one or more of the above-mentioned technical problems and which consists of a stand or a chassis, to which at least three are attached, supporting the floor surface. and rollable along the floor surface, wheels with at least one driven by a drive machinery, to be able to move or move the machine along the floor surface by means of the wheels, and with at least one steerable, to be able to move or move the machine along a path, adapted to be able to displace a number of rotatable means intended for the treatment of the floor surface along said path.

In such a machine, the present invention indicates that, in a straight direction of travel, the middle wheel is driving and steering and that a wheel placed on one side is fixedly related to the frame and directed in a normal straight direction of travel and a wheel placed on the other side is freely pivotable about a vertical axis.

Also within the scope of the invention, currently proposed embodiments fall are a construction in which the middle wheel is to be constituted by the rear wheel, calculated in the direction of travel.

Furthermore, the fixed wheel should be located at a longer distance from the middle wheel than the swivel wheel. Thus, it is proposed that the fixed wheel be located at double or substantially double the distance in relation to the swivel wheel and with space for a rotatable means between the fixed and the swivel wheel. This rotatable means must be oriented next to the swivel wheel.

It is further proposed that a rotatable brush unit is arranged between the fixed and the swivel wheel and that the axis of rotation is oriented horizontally and perpendicular to a straight direction of travel. 461 250 In the direction of travel calculated in front of the fixed wheel, there are two rotatable brushes and the axes of rotation are also here oriented horizontal and perpendicular to a straight direction of travel.

The driving and steering middle wheel is rotatable 3600.

It is further indicated that in a space for the frame, between the middle wheel and the swivel wheel, the required accumulators are arranged, while the driver's seat is located next to and above the swivel wheel.

Finally, it is indicated that a further frame is attached to the stand and intended to support said two rotatable brushes.

ADVANTAGES The advantages which can mainly be considered to be associated with a mobile machine intended for sweeping treatment of a floor surface, in accordance with the present invention, are that this has provided an opportunity to move and displace the machine by means of three wheels, where a is driving and steering, one is fixedly oriented in a direction adjoining a normal direction of travel while the third wheel is freely pivotable.

This has created a machine that can be easily moved along different paths and which provides a very special advantageous opportunity to be able to sweep around angular outer corners, without the need to reverse the machine.

Furthermore, an opportunity is indicated to be able to orient accumulators, driver's seat and other equipment on the stand, so that the machine has a stable shape.

What can primarily be considered as characteristic of a machine, in accordance with the present invention, is stated in the characteristic part of the subsequent mortgage claim 1. BRIEF DESCRIPTION OF THE DRAWINGS A presently proposed embodiment of a machine intended for a sweeping treatment of a floor surface, having the characteristics significant for the present invention, will now be described in more detail with reference to the accompanying drawing therein; figure 1 shows in perspective view the basic shape of the machine with, for clarification purpose, certain normally obscured parts shown and figure 2 shows in perspective view a suitable frame construction for being able to fasten three wheels and a rotatable cylindrical brush unit according to the principles of the invention.

DESCRIPTION OF THE NOW FURESLAGEN EXECUTION FORM.

With reference to Figure 1, there is thus shown in perspective view an presently proposed embodiment of a machine intended for treating a floor surface, in particular a machine 1 intended for sweeping the floor surface.

The machine 1 consists of a front frame or a chassis 2, to which are attached three wheels 4, 5, 6 which support the floor surface 3 and which can be rolled along the floor surface, with at least one wheel, designated by the reference numeral 4, driven by a not shown but known drive machinery, in order to be able to move the machine 1 along the floor surface 3 by means of this drive machinery and the wheel 4.

The machine 1 can be driven by utilized drive machinery in two opposite transport directions, however, in the following description it must be assumed that the direction of travel indicated by arrow "F" is forward.

The machine 1 is further assigned a longitudinal direction or a longitudinal plane "A" to simplify the understanding of the significant features of the invention.

The rotatable sweeping means have been illustrated here as rotatable cylindrical brush units with a horizontal axis of rotation, but the principle of the invention can also be used with rotatable brush units with a vertical axis of rotation. In any case, one of the wheels, namely the wheel 4, must be steerable by means 4a previously known per se, in order to be able to move and displace the machine 1 along a predetermined path, essentially an arbitrary path, adapted for to be able to displace a number of rotatable means or brush units 7, 8, 9 intended for the treatment of the floor surface along wall portions and around corners. Each of these brush units consists of a cylindrical brush unit, which is rotatably arranged about its respective horizontal and mutually parallel rotational axes 7a, 8a, respectively. 9a.

In a straight forward direction, the rear or middle wheel 4 is both driving and steering, while a wheel placed on the left side is fixedly related and directed in said straight direction of travel or parallel to the left frame part 21 of the frame 20.

The wheel 6 placed on the other side, on the right side of the machine 1 viewed in the direction of travel, is pivotable and attached to the right frame part 22 of the frame.

The fixed wheel 5 should be located at a longer distance from the middle wheel 4 than the swivel wheel 6 and preferably it is suggested that the fixed wheel 5 be located at double or substantially double the distance relative to the swivel wheel 6.

Arranged between the fixed 5 and the swivel wheel 6 is a rotatable brush unit 7, of the nature previously mentioned.

The axis of rotation is here arranged horizontally and perpendicular to a straight direction of travel or the plane "A".

Adjacent and in the direction of travel "F" calculated in front of the fixed wheel 5 are two rotatable brush units 8, 9, where also here the axes of rotation are oriented horizontal and perpendicular to a straight direction of travel or the plane "A".

The driving and steering wheel 4 is rotatable 360 ° in a known manner and is driven by an electric motor (not shown), a direct current motor. Between the middle wheel 4 and the swivel wheel 6, resting on the stand, required accumulators 10 are arranged while the driver's seat 11 is located next to and over the swivel wheel 6.

An additional frame 12 is attached to the stand 2 and is intended to support e.g. said two rotatable brush units 8, 9.

The orientation of the wheels 4, 5 and 6 is oriented in a straight direction of travel in or parallel to the plane "A", as Figure 1 intends to show.

It can be stated that the orientation of the brush units 7, 8 and 9 is designed so that they can brush and sweep close to a wall portion as the machine is displaced along the wall portion.

According to the exemplary embodiment shown in Figure 1, it is further understood that if sweeping is to take place around an outer corner, not only with an angle less than a right angle but also with an angle greater than a right angle; the brush units 8, 9 will brush along a wall portion up to the corner and a small distance beyond it until the corner is placed at a point 13.

This point 13 is located diametrically the fixed wheel 5 and perpendicular to the plane "A".

When the corner assumes this position relative to the machine 1, the wheel 4 is rotated perpendicular to the plane "A", as illustrated in figure 2. and is driven from the wall portion, which means that the fixed wheel 5 makes a circular movement around the corner to an extent which determined by the corner angle. At the same time, the wheel 6 rotates to a position corresponding to the position of the wheel 4.

This means that the brush unit 7 leaves said wall portion while the brush units 8 and 9 approach the adjacent wall portion.

When the brush units 8 and 9 are in the vicinity of the adjacent wall portion, a forward movement along the adjacent wall portion is activated. The brush unit 7 then starts to brush a bit from the corner, in the direction of the corner and then along the adjacent wall portion. The invention is of course not limited to the embodiment given above as an example, but may undergo modifications within the scope of the inventive concept.

Claims (12)

/ 0 4 6 1 2 5 Ü PATENTKRAV A machine (1) intended for treating a floor surface (3), consisting of a stand (2) or a chassis, to which at least three wheels (4,5,6) supporting the floor surface and rolling along the floor surface are attached with i at least one (4) driven by a drive machinery in order to be able to move the machine along the floor surface (3) by means of the wheels, and with at least one steerable (4), in order to be able to move the machine along a path, adapted to be able to displace a number rotatable means (7,8,9) intended for the treatment of the floor surface, characterized in that a middle wheel (4) counted in a straight direction of travel is driving and steering and that a wheel (5) placed on one side is fixed and directed in the direction of travel and a wheel (6) placed on the other side is pivotable. 2. A machine according to claim 1, characterized in that the middle wheel (4) is normally constituted by the rear wheel. 3. A machine according to claim 1 or 2, characterized in that the fixed wheel (5) is located at a longer distance from the middle wheel (4) than the swivel wheel (6). 4. A machine according to claim 3, characterized in that the fixed wheel (5) is located at double or substantially double the distance relative to the pivotable. 5. A machine according to claim 1, characterized in that a rotatable brush (7) is arranged between the fixed (5) and the swivel wheel (4). Machine according to claim 5, characterized in that a rotation shaft (7a) is oriented horizontally and perpendicular to a straight direction of travel. 7. A machine according to claim 5, characterized in that in front of the fixed wheel (5) there are two rotatable brushes (8,9). Machine according to claim 7, characterized in that the axes of rotation (8a, 9a) are oriented horizontally and perpendicular to a straight direction of travel. U 461 250 9. A machine according to claim 1, characterized in that the driving and guiding nut (4) is rotatable a6o ° '. 10. A machine according to claim 1, characterized in that the main shafts (4) and the pivotable shafts (6) are provided with the necessary accumulators (10). 11. ll. A machine according to claim 1 or 10, characterized in that a driver's seat (11) is positioned next to and over the pivotable wheel (6) - 12. A machine according to claim 7 or 8, characterized in that a frame (12) is attached to the stand (21) and is intended to support said two rotatable brushes (8,9).