Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1996-02-28
1998-08-18
Smith, Lynette F.
Brushing, scrubbing, and general cleaning
Machines
Brushing
15 503, 15 531, 15 521, 15 491, 15DIG2, 134 6, B60S 300, A47L 1100, B08B 700
Patent
active
057942986
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a device for handling a brush head for cleaning the surfaces of large objects, like airplanes, ships, buildings, comprising a multi-joint assembly carrying the brush head and arranged on the end arm of an articulated or telescopic mast, which multi-joint assembly has from the end arm at least two motor-driven rotary units, which are arranged one behind the other and have alternately with respect to one another vertical axes, and a motor-driven telescopic-like linear unit connected to the last rotary unit, whereby the brush head is coupled to the multi-joint assembly through a further rotary unit having an axis of orientation perpendicular with respect to the telescopic axis, and has a brush roller rotatable about an axis is perpendicular with respect to the axis of orientation, and can be moved during the cleaning operation along specified paths of movement on the surface to be treated. The invention relates furthermore to a process for cleaning the surfaces using such a handling device.
BACKGROUND OF THE INVENTION
A handling device of the mentioned type is known (DE-A-40 35 519) having an articulated mast, the base arm of which is supported rotatably about a vertical axis on a bearing block arranged on an undercarriage, and the end bearing of which has a multi-joint assembly, which can be equipped with the brush head. The telescopic axis of the linear unit and the rotary unit on the side of the end arm are in this case always in one plane as a result the handling device has a relatively long building length of construction. Furthermore the rotary unit, which shaft-like follows the rotary unit on the side of the end arm with an axis, which is perpendicular to said rotary unit, has an angle of traverse limited to 180.degree., which results in a disadvantageous limiting of the mobility of the brush head relative to the surface to be cleaned. It is also known from the mentioned reference to load the surface to be cleaned with washing water. A washing-water channel with radially outwardly pointing openings is, for this purpose, arranged inside of the brush roller in such a manner that washing water exits over the entire length of the brush roller onto the surface to be cleaned. However, it has also been proven that these measures are not sufficient to soften the dirt dried on the surface to a degree that such dirt can be completely removed by the rotating brush.
Furthermore, it is actually known in an airplane washing device with an articulated mast, multi-joint assembly and washing brush to arrange the axis of a linear unit of the multi-joint assembly laterally staggered, and to obtain in this manner a more compact design (GB-A 1 327 901).
SUMMARY OF THE INVENTION
Starting out from this, the basic purpose of the invention is to improve the known device of the above-identified type in such a manner that along with a compact design an optimum alignment of the brush head and of the multi-joint assembly relative to the surface to be cleaned occurs and thus an improved cleaning result is guaranteed. A further purpose of the invention consists in disclosing an improved cleaning process utilizing the handling device of the invention.
The solution of the invention is based on the thought that the multi-joint assembly with its telescopic axis is always aligned approximately perpendicularly with respect to the surface to be cleaned during the cleaning operation. This is only possible when the rotary units of the multi-joint assembly permit a sufficient pivoting angle. In order to achieve this, it is suggested according to a preferred embodiment of the invention that the axes of the rotary unit on the side of the end arm and of the linear unit are arranged in laterally staggered or spaced, mutually parallel planes. This measure guarantees that the rotary unit following the rotary unit on the side of the end arm can have a pivoting range of more than 180.degree.. If one considers that the drive motor of the rotary unit is built larger, the larger its pivoting range i
REFERENCES:
patent: 3104406 (1963-09-01), Rhodes
patent: 3665542 (1972-05-01), Franzreb
Fritz Stefan
Fugel Dietmar
Wanner Martin
Nelson Brett
Putzmeister Aktiengesellschaft
Smith Lynette F.
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