FULL HYDRAULIC DRIVEN LAWN MOWER OF FOUR-WHEEL STRUCTURE

摘要

PROBLEM TO BE SOLVED: To prevent a machine body from stopping in an ascent or from going down at a high speed in a descent by reducing the lowering of the driving force with the slip of a wheel as less as possible in a full hydraulic driven lawn mower of a four-wheel structure. SOLUTION: This full hydraulic driven lawn mower of four-wheel structure is so formed that hydraulic motors are directly connected to two front wheels WRf and WLf and two rear wheels WRb and WLb respectively and the respective hydraulic motors are driven by a hydraulic pump A. The respective hydraulic motors MRf and MRb, (MLf and MLb) are connected in series to left/right and front/rear two wheels WRf and WRb (WLf and WLb) and the serially connected lift/right two hydraulic motors MRf and MRb, (MLf and MLb) are connected in parallel to a main passage L1 delivered from the hydraulic pump A.