| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To quickly ground a ground-leveling apparatus, to start a ground-leveling operation and to prevent desolation of a field surface caused by grounding of a ground-leveling rotor in an irrotational state. <P>SOLUTION: The riding transplanter sets an operation position in which the ground-leveling rotor 33 is grounded in a rise and fall range of the ground-leveling apparatus 22 to level the field surface, a storage position in which the ground-leveling rotor 33 is evacuated upward from the field surface and a preparation position in which the ground-leveling rotor 33 is made to stand by between the operation position and the storage position. When a planting implement 3 is in a rising state, the ground-leveling apparatus 22 is in the storage position; when the planting implement 3 is in a falling state and a traveling body 1 is in a traveling stop state, the ground-leveling apparatus 22 is in the preparation position; when the planting implement 3 is in a falling state and the traveling body 1 is in a traveling state, the ground-leveling apparatus 22 is in the operation position and when falling from the preparation position to the operation position, the ground-leveling apparatus 22 is in a falling action while rotating and driving the ground-leveling rotor 33. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
