| 摘要 |
The plough base frame has a single symmetrical body, for the two directions of operation, carried out by a single head (1), drawn by a tractor. It has an oscillating arm (6), which can be switched from one direction to the other, around an axis (5), on the single head. The arm has a outer axis (8) fixed at the outer end, which allows the carrying beam (7) to be switched from one side to the other. The beam carries the plough bodies, arranged along and below it, and is moved by a hydraulic jack (13), which is located between the two carrying arms (6,7). A damper (18) is arranged between the single head and the oscillating arm; this is of the type which limits the shocks transmitted through the arm, from the soil, when the plough is in use.
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