| 摘要 |
A double-disk combined coulter of a grain drill for sowing farm crops includes two flat disks, arranged in such a manner as to allow rotating by cornerwise along the strike of the coulter, and a fin-like part arranged between the disks. Said part is attached to the body with the aid of a pivot suspension, disposed additionally, and a spring having a mouth and a point. The pivot suspension is fixed to a holder connected to the body of the coulter. Said holder consists of two jaws, forming a hollow, into which the fin-like part of the combined double-disk coulter is inserted in such a manner as to allow an axle of the pivot suspension of the fin-like part to be disposed behind thereof along the strike of the coulter, and a projection of the axle onto the bottom of a seed furrow coincides with the contact area of the lower part of the point and the bottom of a seed furrow. |
