| 摘要 |
<p>The device (10) has a coupling unit (16) connected to a suction device (12) and a machine connection device (14). The coupling unit is provided with two guiding arms (20, 22) in an arm region (18). Main extension axes of the guiding arms are arranged on opposite sides of a middle plane of the coupling unit. The guiding arms guide suction-air stream to the device. A spring is provided for elongating length of the coupling unit in a specific operating condition. A filtering device filters the suction-air stream. The suction device has a suction head (28) and a storage tank (30).</p> |
