| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tractor for taking out hydraulic pressure from an operation oil passage of a front wheel shifting mechanism, while suppressing the occurrence of a power loss. <P>SOLUTION: The tractor includes: an artificial selecting takeout oil passage 70 operated by switching to an opening state and a closing state to the operation oil passage 61 by an artificial selecting valve 66; a checking takeout oil passage 71 operated by switching to the opening state and the closing state to the operation oil passage 61 by a checking valve 67; an automatic selecting takeout oil passage 72 operated by switching to the opening state and the closing state to the operation oil passage 61 by an automatic selecting valve 68; and a relief oil passage 73 connected to the operation oil passage 61. The tractor includes a hydraulic pressure takeout oil passage 74 for taking out hydraulic pressure from the artificial selecting takeout oil passage 70, the checking takeout oil passage 71, the automatic selecting takeout oil passage 72 and the relief oil passage 73. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
