| 摘要 |
<p>The carriage is for exterior travelling devices, for cleaning the wall faces of tall buildings and inserted on flat roofs (15) with parapets. The carriage has three or more sets of running gear, one at least of which is power-driven. The chassis is fitted with four sets of running-gear, two (3, 4) being sited in tandem on the side away from the parapet (16). Two swivelling sets (1, 2) are mounted on the side facing the parapet, eccentrically to the swivel axis (12). These two are power-driven. These two sets of running-gear may have eccentrically mounted guide rollers (5, 6).</p> |
