To solve problems such that since in a multiple rows-planting type seedling transplanter, the soil depth is detected by the up and down movements of a center float installed at the central part in the width of the seedling transplanting device, and lifting up and down-controlling the seedling transplanting device relative to a machine body, and the lifting up and down control is easily affected by the leveling property of a ground-preparing rotor at the front side of the center float, in the case of having contaminants such as straw dusts or hard soil lumps on the surface of the ground, the pushing up force of the center rotor or center float becomes larger to make the detection of the soil depth tends to be inaccurate.
This seedling transplanter having the seedling transplanting floats of the center float and side floats at left and right both sides and also having soil-preparing rotors of a center rotor 9A and side rotors 9B at the front side of each of the floats is characterized by having a constitution of maintaining and controlling the transplanting depth as constant by lifting up and down the seedling-transplanting device by the up and down movements of the center float, and also rotating the rotation of the center rotor 9A by a higher speed than that of the side rotor 9B.
| JP2002315412 | SOIL COVERING WHEEL OF SEEDLING TRANSPLANTING MACHINE |
| JP6123638 | Work vehicle |
KAMIYA HISASHI
KUSAMOTO HIDEYUKI
FUKUI SUSUMU
NAKANISHI YASUHITO
YAMAGUCHI MAKOTO
HAYASHI YASUHIRO
SAEKI MASABUMI
KONDA MITSUO
KATO SATORU
WATABE ICHIRO
