| 摘要 |
PROBLEM TO BE SOLVED: To provide a working machine that does not bring a seedling planting unit into contact with a levee, etc., in backward movement of seedling transplanter and does not make backward speed of the seedling transplanter too fast. SOLUTION: The working machine is equipped with a controller 163 that sets the number of revolutions of an engine when a transmission composed of an HST (hydraulic static transmission) 23 and a mechanical speed change means that is arranged behind the HST 23 and changes speed to a shift stage with stages is in a neutral position on the reverse side larger than the number of revolutions of the engine when the transmission is in a neutral position on the forward side and sets the number of revolutions of the engine when the transmission is in a first shift stage in the backward direction smaller than the number of revolutions of the engine when the transmission is in a neutral position on the reverse side. When the seedling transplanter is moved back while raising a seedling planting unit 4, the number of revolutions of the engine is increased before start of the backward movement quickly raise the seedling planting unit. When the backward movement actually starts to reduce the number of revolutions of the engine, the seedling transplanter is not moved backward more than expected, so that an operator achieves safety. COPYRIGHT: (C)2011,JPO&INPIT |
