| 摘要 |
PROBLEM TO BE SOLVED: To prevent a transmission failure due to elongation or the like of a transmission belt in a belt tension clutch mechanism of a working vehicle. SOLUTION: In the belt tension clutch mechanism 10, a tension clutch pulley 15 is operated to a power input position by the drive of a motor-driven actuator 16 interlocking and linked with a fitting member 13 of a tension clutch pulley 15 through a tension spring 21, and a spring length detection means 23 is provided for the tension spring 21, whereby on the basis of the detection of the proper spring length by the spring length detection means 23, the drive of the motor-driven actuator 16 in the clutch engagement direction is stopped. COPYRIGHT: (C)2005,JPO&NCIPI
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