| 摘要 |
<p>A levelling machine with oscillating combs supported by a frame fixed to a power cultivator, the rear power take-off of which drives the combs, comprises a series of connecting rods (10) and rocker arms (11) supported by the frame in such a manner as to oscillate in the horizontal plane, three parallel combs or rakes (102, 112, 122), of which one (102) is supported at the end of the connecting rods and two (112, 122) are supported at the opposite ends of the rocker arms, and means for oscillating said connecting rods and said rocker arms, the movement being transmitted to each of the two combs (102, 122) oscillating in phase by a crank mechanism (51) of the connecting rod-crank type, the two cranks (511, 512) being connected in phase opposition to the same shaft (5). <IMAGE></p> |
