| 摘要 |
PURPOSE:To prevent gearing noise and gear tooth breakage at the time of power takeoff(PTO) switching by providing a delay circuit in such a manner that a signal for operation of power takeoff is outputted after a determined time after neutral is judged by a shift position detecting means. CONSTITUTION:ON/OFF of a brake switch 2 (braking state detecting means) and ON/OFF of an air shift switch 3 (power takeoff starting means) are judged, and ON/OFF of a neutral switch 1 (shift position detecting means) is judged. In a foot brake or parking brake operating state (brake switch ON), when shift range is operated to neutral position (neutral switch ON), and the switch 3 is immediately turned ON to operate PTO, PTO is operated after a determined time by the operation of a timer 5. Therefore, the rotation of a driving gear 41 is sufficiently reduced to engage the gear with a PTO gear 31, so that engaging noise and gear tooth breakage can be prevented. |
