| 摘要 |
<p>The lawnmower comprises a chassis (1) supporting a cutting blade rotating in a horizontal plane, two horizontal-axis rear wheels (3) for supporting and moving the chassis (1), a freely-rotating support roller (7) interposed between the rear wheels (3) with its axis of rotation (16) parallel to that of the latter and means (11) for adjusting the height of the chassis (1) with respect to the wheels. The supporting roller (7) is rotatably held by a pair of supports (8) rigidly connected together and also kinematically connected to the axis (6) of the wheels (3); in addition, the supports (8) are loosely constrained to the chassis (1) so that they can be displaced with respect to it together with said axis (6) of the rear wheels (3) along a rectilinear path defined by slide guides (26). <IMAGE></p> |
