ANALYSIS OF TRACTION AND TRACTIVE PERFORMANCE DURING PLOW OPERATION

초록

This study was conducted to analyze tractive performance and traction force through measured rear axle power and traction force during plow operation in dry field. Test site was located in Seomyeon, Chuncheon and soil texture was determined as sandy by the USDA method. Field test was performed with 23.7 kW rear wheel drive tractor which was mounted a three-blade, reversible plow. The tractor had four main transmission gears (1, 2, 3, and 4), and three sub gears (L, M, and H). The tractive force was measured by six-component load cell which mounted between 3 point hitch and the plow. The power consumption of the rear wheels were determined by the multiplication of rotational speed and torque. The torque of the rear wheels was measured using two-element 90° rosette strain gauges attached to the left and right wheel shafts. The rotational speed of the rear wheels was measured using proximity sensors attached to the left and right wheel shafts. The transmission gears were determined to L4, M1, M2 and M3 considering actual working speed of local farmers. The rated working speed was 1.99, 2.57, 3.53 and 4.54 km/h each transmission gears. The data were analyzed using the average values of the four times repeated. The tractive force ranged from 4.8 to 7.0 kN. The power consumption of the rear axle ranged from 3.68 to 9.73 W. The power consumption of the rear axle and tractive force tended to rise as the tractor gear (i.e., working speed) increased. © ISTVS 2021. All rights reserved.

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