| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve durability by reducing a wear and tear degree of a clutch, while making the most use of a merit of operability and an advantage to reduce an uncultivated part, such as to automatically perform engagement-disengagement having a half-clutch of a PTO clutch, in operation of a braking operation tool. <P>SOLUTION: The PTO clutch is operated for disengagement after starting braking operation by the braking operation tool 41 in operation to the travel stopping side of the braking operation tool 41. The operation timing is set so as to start engaging operation of the PTO clutch 24 before the braking operation is released by the braking operation tool 41 in operation to the travel stopping releasing side of the braking operation tool 41. A control means 32 is provided for making control so that a change in clutch pressure of the PTO clutch 24 to an operation quantity of the braking operation tool 41 becomes gentler on the clutch engaging side than the clutch disengaging side. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
