The Possibility of Installing Disk and Cone Type Clutches on Power Train of an Existing Walking Tractor to Facilitate Its Steering Performance

Tillers (2WTs) are among the types of small tractors that are usually used in greenhouses, orchards, and  paddy fields; they are most useful  in places where it is difficult to move tractors. The existing tillers have only one clutch for power transmission to the gearbox, and they do not have a clutch to guide and steer. For this reason, they have many problems for turning and steering, especially under the trees and changing the movement direction during work. Therefore, in this research, an attempt was made to solve this problem. Two types of plate (disc) and cone friction clutches, which are the most used in agricultural machines, were thought about.The torque generated on the rotors of a 9-hp tiller was calculated while the tiller was running at gear ratio one. The applied forces from the operator (driver) to the clutch plate (disc) for engaging the clutch was calculated. Having the amount of transmission force, torque and available space to the design of the cone clutch, which can be used on the rotary axles of the tiller, was performed using 3D design software (CATIA). To ensure the resistance of parts against failure and their correct operation, static analysis of selected clutch parts that are exposed to maximum stress was performed in ANSYS software. The results indicated that the clutch parts had appropriate strength and hence, would operate safely. Therefore, it can be concluded that it is possible to use the cone clutch on such tillers.Two types of plate (disc) and cone friction clutches, which are the most used in agricultural machines, were considered.The torque generated on the rotors of a 9-hp tiller was calculated while the tiller was running at gear ratio one. The applied forces from the user (driver) to the clutch plate (disc) for engaging the clutch was calculated. Having the amount of transmission force, torque and available space to the design of the cone clutch, which can be used on the rotary axles of the tiller, was performed using 3D design software (CATIA). To ensure the resistance of parts against failure and their correct operation, static analysis of selected clutch parts that are exposed to maximum stress was performed in ANSYS software. The results indicates that the clutch parts have appropriate strength and hence, would operate safely. Therefore, it can be concluded that it is possible to use the cone clutch on such tillers.