| 摘要 |
Each arm (10) is articulately fitted in the suspension frame (4) and to the snow plough (5,6,9) so that they may pivot and cause the plough to move outwards to either side of the tractor. To control the pivoting of the arms, double-acting hydraulic pistons (14) are pref. used. The plough has a guide (9) for its longitudinal movement by means of a hydraulic motor (15), and articulations (12) fitted to it are displaceable along the guide, being adjustable as to position by means of a further double-acting hydraulic piston (16) to vary the angle of attack of the plough. |
