| 摘要 |
A device for controlling a pushable implement provided with at least one gauge wheel. The device includes a hitch system comprising two lower longitudinal arms (5, 6) with a tool-engaging member (9) at the front ends thereof, an upper engagement assembly (C) joining a third point of engagement (17) to the implement (3), at least one lifting jack (12, 13), and a distribution unit (21) for controlling the raising and lowering of the longitudinal arms (5, 6). A controller (28) operates the distribution unit in response to a degree of slippage measured by a unit (M). The upper engagement assembly (C) includes at least one third-point jack (18; 18a, 18b) connected to a second fluid distribution unit (30; 30') controlled by said controller (28) so that when the longitudinal arms (5, 6) are raised, the second distribution unit (30; 30') switches to a position in which part of the load is shifted onto the tractor as the lower longitudinal arms are raised.
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