| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that a load in operation given to an operator is increased by performing a manual operation of lifting a reaping device to make a turn at the end of the reaped row in combine operator. SOLUTION: This reaper-lifting device having a hydraulic circuit 3 for flowing pressure oil from a hydraulic pump 5 to an exchanging valve 6 for steering to make a turn through an exchanging valve 4 to lift up a reaper when the exchange valve 4 to lift up a reaper is at a neutral position, is provided by, on steering a crawler 1 for making a turn by actuating the pressure oil of a cylinder 7 for steering to make a turn caused by the exchange valve 6 for steering to make a turn, the pressure oil flows to the cylinder 9 for lifting up the reaper through a throttle valve 8 installed at the inside of the exchange valve 4 to automatically lift up the reaper 2 by receiving a back pressure of the pressure oil actuation, while keeping the exchange valve 4 to lift up the reaper at the neutral position.
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