| 摘要 |
The seed drill, coupled by a traction arm to a towing vehicle, has a body consisting of a wheeled front chassis (7) with furrow opening tools and a rear chassis (9) connected to it by a central coupling (17) with a vertical axis (17a) and equipped with a seed hopper and drilling implements. It also has an alignment mechanism (18) for the rear and front chassis with a pin (19) and a roller (30) that moves in a guide grooves (23) and prevents the rear chassis from pivoting relative to the front one during transportation and allows relative movement only when the drilling implements are in the ground.
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