| 摘要 |
An agricultural plough ( 1 ) including a longitudinally extending support member ( 2 ) having a forward portion to be attached to a vehicle to thereby enable the apparatus ( 1 ) to be towed by the vehicle; a generally "n" shaped frame ( 500 ) fixed to the support member ( 2 ) and including a pair of ends ( 505, 510 ) located on opposite longitudinal sides and spaced normal to the support member ( 2 ); a pair of axles ( 13, 14 ) attached to and extending laterally from the ends and providing a pair of laterally extending rotational axes, the axes being located on opposite sides of the member ( 2 ) and in a plane extending transversely normal to the member ( 2 ) and at an acute angle longitudinally so as to extend rearwardly down, the axes each being inclined by an acute angle of 6 to 12 degrees to a plane extending normal to the member ( 2 ) to diverge rearwardly; a plough disc ( 18, 20 ) supported on each axle to rotate about the rotational axes, with the discs ( 18, 20 ) and axles being configured so that the discs ( 18, 20 ) converge rearwardly and downwardly, the discs ( 18, 20 ) being displaced rearwardly from the forward portion; a wheel attached to the support member ( 2 ) and rotatable about an axis generally transverse of the support member ( 2 ), the wheel ( 12 ) being located rearwardly of the axles ( 13, 14 ); and structure connected to the support member ( 2 ) and to be attached to the vehicle, to urge the member downwardly so that the discs ( 18, 20 ) are urged into soil and the wheel ( 12 ) is urged into contact with a soil surface rearwardly of the discs ( 18, 20 ) so that upon forward movement of the vehicle with the discs ( 18, 20 ) engaged in the soil, each disc ( 18, 20 ) forms a separate groove and a corresponding ridge in the soil between the grooves, with the ridge being engaged by the wheel ( 12 ) to urge the soil to cover seeds located in the grooves.
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