DRAFT CONTROLLING DEVICE OF TRACTOR

摘要

PROBLEM TO BE SOLVED: To carry out a draft control of a tractor in high accuracy. SOLUTION: The tractor is provided with an implement attaching device 12 at the rear part of the body and vertically moves the implement such as a plow 13 attached to the implement attaching device 12 with a lift cylinder 28. A top link 21 constituting the implement attaching device 12 is pivoted with a top link hinge 31 rotatably attached to a hydraulic case 25 of the body. The rotational angle of the top link hinge 31 is detected with a potentiometer 50 and the draft control is carried out by controlling the drive of the lift cylinder 28 based on the rotational angle of the top link hinge 31 detected by the potentiometer 50. COPYRIGHT: (C)2005,JPO&NCIPI