Floor cleaning machine and method for operating a floor cleaning machine
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Solution Overview
Problem
Existing floor cleaning machines face challenges in maintaining an optimal distance between the sweeping element and the floor, leading to either getting stuck on uneven surfaces or failing to pick up coarse dirt due to variable cleaning roller diameters and manufacturing tolerances.
Innovation Solution
The floor cleaning machine incorporates a movable tank device with a sweeping element, allowing for a defined fixed distance to be set between the sweeping edge and the floor, independent of the cleaning roller diameter, using support elements and a floating mounting system to ensure consistent dirt pickup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sweeping element is positioned close to the floor to maximize dirt pickup, then coarse dirt collection is improved, but the sweeping element gets stuck on joints or transitions
Solution Approach 1:
The tank device is made movable relative to the floor head, allowing the sweeping element's height to dynamically adjust. The tank device can shift position to compensate for floor unevenness, keeping the sweeping element at an optimal distance without getting stuck while maintaining effective dirt pickup.
Solution Approach 2:
The distance parameter between the sweeping element and floor is optimized to a specific range (0.5-1.5mm). This parameter change balances two opposing requirements: close enough for effective dirt pickup but far enough to avoid getting caught on floor irregularities.
2Manufacturing precision
If the cleaning roller diameter varies due to wear or manufacturing tolerances, then the distance between sweeping element and floor changes, but consistent cleaning performance is required
Solution Approach 1:
The movable tank device automatically compensates for cleaning roller diameter variations. As the roller wears or varies in size, the tank device shifts position to maintain the correct sweeping element height, eliminating the need for manual adjustment and ensuring consistent cleaning performance.
Solution Approach 2:
The system transitions from a fixed to a dynamic configuration where the tank device can move to accommodate roller diameter changes. This dynamic adjustment maintains optimal sweeping element positioning regardless of roller wear or manufacturing variations.
3Productivity
If the sweeping element distance from floor is set too small, then dirt pickup is maximized, but the element gets caught on floor unevenness
Solution Approach 1:
The movable tank device acts as an intermediary between the fixed floor head and the sweeping element. It absorbs the impact of floor unevenness by moving, thereby protecting the sweeping element from getting caught while maintaining optimal dirt pickup distance.
Data Source
AI summary
The invention relates to a floor cleaning machine, including a floor head, at least one cleaning roller, which is arranged on the floor head, a tank device, which is arranged on the floor head, and at least one sweeping element, which is associated with the at least one cleaning roller. To provide a floor cleaning machine of that kind, which has an optimized coarse dirt pickup function, the at least one sweeping element is arranged on the tank device and that at least a partial region of the tank device on which the at least one sweeping element is arranged is movable relative to the floor head in a cleaning operation.