| 摘要 |
The cleaner is mounted on a self-propelled motorised vehicle. A swivelling connecting arm (18) pivots on the vehicle (20), its other end (22) carrying the cleaning head (36). The cleaning head support (24), fixed to the swivelling arm, carries supporting arms (28,30) at a constant angle, on a turntable (26). The turntable swivels on the head support, carrying a motor driving two contra rotating brushes (32,34), carried on the arms. A suction head (17) is also carried. The turntable may be rotated, carrying a motor, pinions, pulleys and belts, rotating the brushes. The brush arms may be telescopic, with belt tensioning braces. The suction head, downstream of the brushes, may be flexibly connected (16) to the suction system (14). The motor and actuator may be hydraulic.
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