VEB KOMBINAT FORTSCHRITT LANDMASCHINEN NEUSTADT IN SACHSEN
发明人:
HOFFMEISTER,LOTHAR
申请号：
DE19853517993
公开号：
DE3517993(A1)
申请日:
1985.05.18
申请国别(地区):
德国
年份:
1985
代理人:
摘要：
The invention relates to a seed drill having a plurality of vertically movable seed coulters which are drawn into the ground by springs. The object of the invention is to combine the lifting out and lowering of the seed coulters with the setting of the prestress of the springs for depth adjustment. For this purpose, a working space 1;2 is mounted pivotably on the main frame 13 of the seed drill, in which working space the spring rod 9 is guided displaceably in long holes 10 in order to set the spring tension, and the pivoting movement of the working frame and the displacement of the spring rod 9 are brought about by means of a crank 7. <IMAGE>
