| 摘要 |
The support wheel (3) rotates around a horizontal axis, and can be turned around a vertical axis (13). The frame (1) supports plough bodies which can be placed against the earth for ploughing or raised for transport. - The support wheel is made to assume an angle (b) from a neutral position in the longitudinal direction to the frame during ploughing with the aid of a control (4) which is adjusted to a fixed stop from a neutral position. The wheel can assume a further angle (c) from the ploughing position with the aid of the control when the tractor is pivoted so that the frame is at a given angle to the longitudinal direction of the vehicle. |
