| 摘要 |
PROBLEM TO BE SOLVED: To provide a tractor mounting a rotary implement, capable of judging the necessity of automatic elevation of the implement based on the mounting/non-mounting of the rotary. SOLUTION: This tractor joining the rotary implement 25 at the rear part of the tractor by a lift arm 13 as capable of lifting up and down, and constituting a regulating part 42 working for lifting up and down the lift arm 13 by detecting the up and down movements of a rear cover by an angle sensor 41 is provided by constituting the angle sensor 41 working for detecting from a plowing depth regulation range that a passive link 39a makes a contact with an active link 39b to a range that the passive link 39a is cut off from the active link 39b and deviating from the plowing depth-controlling range, and installing a checking means for checking the output for working the elevation of the lift arm 13 on detecting an angle deviation from the plowing depth-regulating range by the angle sensor 41, at the regulating part 42 outputting for the operation of the lift arm 13 in elevating side accompanying with the retreating switch operation or the swinging operation of the tractor machine body. COPYRIGHT: (C)2009,JPO&INPIT
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