| 摘要 |
<p>A semi-mounted plow frame includes a furrow wheel which is steered to follow the turning radius of a prime mover. A master-slave hydraulic steering system includes a first piston and cylinder interconnected between the front of the plow frame and the rear of the prime mover such that the piston is reciprocated in direct relationship to angular directional variations between the frame and prime mover. A second piston and cylinder is pivotally connected between the rear of the plow frame and the furrow wheel. Hydraulic lines interconnect the first and second cylinders to reciprocate the second piston in direct relationship to the reciprocation of the first piston to thereby steer the furrow wheel. The hydraulic lines between the first and second cylinders are interconnected to the hydraulic lift system of the prime mover so that air may be purged from the hydraulic steering system.</p> |
