| 摘要 |
PROBLEM TO BE SOLVED: To free an operator of complex operation for various settings in the turning operation of an agricultural tractor. SOLUTION: The agricultural tractor is equipped with a work machine lift 25 for lifting a rotary work machine R, a work machine lift-controlling means C1 for controlling the work machine lift 25, a front wheel drive-switching device 3 for switching the vehicle body to the two-wheel drive mode or to the four-wheel drive mode, a running controlling means C2 for controlling the switch condition of the front-wheel drive-switching means 3, and a setting device 9 for switching the setting position to the running position P1 or the cultivation position P4. At the cultivation position P4, the running mode of the vehicle body is set to the four-wheel running mode and, and the work machine lift is turned on. The tractor is further provided with a setting tool for allowing individual and independent selection of front wheel acceleration control, automatic lift control and automatic braking control, and when the setting tool 9 is operated to the cultivation position P4, the front wheel acceleration control, the automatic lift control or automatic-braking control is forcedly turned on by the setting tool. COPYRIGHT: (C)2009,JPO&INPIT
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