Torque measurements at the shaft of the star feeder
Article Sidebar
Main Article Content
Abstract
The development of a torque measurement method for star-feeder fertilizer is important due to the role of torque in assessing tractive efficiency. This research aims to develop a torque measurement method for fertilizer using a star feeder. Strain gauges are bonded on the shaft of a star feeder to measure torque, while the rotational speed of the shaft was measured by a proximity switch. The studies were focuses on a 60 cm diameter of the steel ground wheel and the tests were conducted at tractor travel speeds of 2.68, 4.76, and 6.67 km/hr, with vertical wheel loads of 1.27, 1.35, and 1.44 kN. The tests were performed on both asphalt and the soil surfaces. The results showed that the vertical wheel load affected the torque applied to the fertilizer conveyor. As the vertical wheel load and tractor speed increased, the power required to drive the fertilizer conveyor increased. Moreover, it was found that the power required to drive the fertilizer conveyor on soil surfaces was higher than on asphalt surfaces.
Article Details
References
Liljedahl JB, Turnquist PK, Smith DW, Hoki M. Tractors and Their Power Units. New York. Van Nostrand Reinhold; 1989.
Hermawan W, Suastawa IN, Sudianto D. Traction performance of movable lug wheels with spring mechanism and rubber lug. Journal of the International Society for Southeast Asian Agricultural Sciences. 2001;(7): 58-67.
Wong JY, Reece AR. Prediction of rigid wheel performance based on the analysis of soil-wheel stresses. Journal of Terramechanics. 1967;4(2): 7-25.
Yamanaka, I. Fundamental Research on Lug of Iron Wheel for Small Type Tractor. Publication No. 8-J, Department of Agriculture, Tokyo University, Tokyo, Japan; 1962.
Pandy KP, Ojha TP. Effect of design parameters on the performance of rigid wheels in puddled soil. Journal of Agricultural Engineering. 1973;10(5&6): 38-43.
Gee -Clough D, Chacellor WJ. Pull and lift characteristics of single lug of rigid wheels in wet rice soils. Journal of Transaction of the ASAE. 1976;19(3): 433-441.
Ali OS, McKyes E. Effects on soil thrust of lug angle, length and soil consistency. Journal of Transactions of ASAE. 1978;22(6): 1294-1304.
Wimalawansa LS. Study of Optimum Lug Angle and Spacing for Medium Powered Tractor (46 kW) [Dissertation]. Asian Institute of Technology, M. Eng. Thesis No AE-82-15 (unpublished); 1982.
Gee -Clough D. Improving the design and utilization of Field machinery in Asia: Proceeding of the International Conference on Agricultural Engineering and Agro-Industry in Asia, Asian Institute of Technology, Thailand. Bangkok: 1981. p.120-138.
Chen B, Chao F. The research of driving wheel with movable lugs of the paddy field floating tractor: Proceeding of 8th International Conference of the ISTVS, Cambridge, UK. UK: 1984. p.495-505.
Salokhe VM, Manzoor S, Gee-Clough D. The measurement of forces on a cage wheel lug when operating in wet clay soil. Journal Soil and Tillage Research. 1989;14(4): 327-340.
Hermawan W, Oida A, Yamazaki M. Measurement of soil reaction forces on a single movable lug. Journal of Terramechanics. 1996;33(2): 91-101.
Watyotha C, Gee-Clough D, Salokhe VM. Effect of circumferential angle, lug spacing and slip-on lug wheel forces. Journal of Terramechanics. 2000;38(1): 1-14.