REAPING UNIT LIFTING STRUCTURE FOR REAPING HARVESTER

摘要

PROBLEM TO BE SOLVED: To provide a reaping unit lifting structure for a reaping harvester, designed to be properly compatible with the mode of subjecting a reaping unit to lift driving at a relatively low speed and the mode of subjecting the reaping unit to lift driving at a relatively high speed. SOLUTION: This reaping unit lifting structure includes a 1st hydraulic pump 11 and a control valve 21 capable of charging/discharging a hydraulic fluid via the 1st hydraulic pump 11 to/from a hydraulic cylinder 8 for the lift driving of the reaping unit. The structure has the following mechanism: The hydraulic fluid is charged/discharged through a control valve 11 to/from the hydraulic cylinder 8 to enable the reaping unit to be driven by the hydraulic cylinder 8. The structure also includes a 2nd hydraulic pump 12 and a changeover means 22 capable of feeding/halting feeding a hydraulic fluid via the 2nd hydraulic pump 12 to the hydraulic cylinder 8. COPYRIGHT: (C)2004,JPO&NCIPI