Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1998-11-24
2000-12-26
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15320, 15385, 15401, A47L 11202
Patent
active
061639230
DESCRIPTION:
BRIEF SUMMARY
A ground-treatment machine establishing the generic type has been disclosed, for example, by DE 43 37 633 C2. It comprises a ground-treatment device having a non-circular overall treatment area. As is the practice in such ground-treatment machines, a suction strip is arranged in a trailing position relative to the ground-treatment device, and this suction strip is suspended from a retaining arm which is pivotably mounted about a vertical axis. In this case, the vertical axis for the trailing and pivotably suspended suction strip lies centrally between the axes of rotation of two main brushes.
Although such ground-treatment implements have in principle proved very successful in practice, the object of the present invention is to provide a ground-treatment machine which is improved still further compared with said ground-treatment implements.
With comparatively simple means, the present invention brings about improvements which hitherto were not thought to be possible.
The ground-treatment machine according to the invention comprises a ground-treatment device having a non-circular treatment area, for example in the form of two disk brushes arranged next to one another. This ground-treatment device is now arranged so as to be pivotable about a vertical axis.
Furthermore, it is taken into account that the treatment device having the non-circular treatment area may normally consist of two disk brushes which lie next to one another relative to the direction of travel and can be driven in opposite directions; thus, for the present invention, this means that, even during curvilinear travel of the ground-treatment machine, these ground-treatment bodies, for example in the form of disk brushes, remain oriented transversely to the direction of travel in each case with their very much larger overall transverse extent. As a result, during curvilinear travel, even right into corners and out again, the ground can be treated or cleaned with the treatment body over as wide an area as possible and also in a fully effective manner.
An associated suction strip is also preferably jointly pivoted with the pivotable treatment device, as a result of which the water soaking solution, applied to the ground for example, can be sucked up in an optimum manner. In this case, the suction strip may be pivoted together with the entire ground-treatment device in a fixed spatial allocation or else may again be suspended so as to float relative thereto, at least within a small angular range.
In a coordinated solution, it has proved to be especially favorable if the ground-treatment device having the at least one treatment body also comprises a running wheel which is jointly pivoted with the ground-treatment body. This running wheel, due to the weight bearing on it (from the chassis of the ground-treatment machine), builds up transverse forces which allow the rotation to take place in a defined manner, and without the running wheel sliding or slipping away transversely. If this at least one running wheel is arranged between the treatment bodies of the ground-treatment device and the suction strip trailing relative thereto, especially optimized running behavior results, since, in the most confined spatial regions, the trailing suction strip can swing out laterally by lateral pivoting of the ground-treatment machine. In this case, it is also possible to configure the entire arrangement in such a way that the entire ground-treatment device can rotate by 360.degree.. The result of this is also that, in a small spatial region, a changeover can be effected from forward travel via slight lateral travel to reverse travel, with the result that the suction strip, e.g. in the smallest space, can be pivoted by 180.degree. and comes to lie in a trailing position again during reverse travel.
Especially favorable proportions are achieved in particular in the connection of a ground-treatment device, pivotable as a body and having a non-circular ground-treatment area, together with a jointly pivotable suction strip, with an additional running wheel for suppor
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Georg Hefter Maschinenbau
Moore Chris K.
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