| 摘要 |
PURPOSE:To achieve safety operation by lifting a rotary section in order to turn the machine during operation then lowering the engine speed through function of a sensor thereby automatically reducing the speed. CONSTITUTION:In the agricultural work, under such state where the rotary section a is grounding while the rotary (a) is deeper than the ground level, sensor B will incline until contact with a transmission case 7 to maintain the position. Through said inclining motion, a projection 19 will rotate to pull a wire 21 thus to rotate a drive lever 20 and to gear a jaw clutch in clutch C with another jaw clutch against a spring to transmit power from PTO shaft to the input shaft thus to bring the driven state of the rotary (a). Consequently it is operated while the engine speed is being increased. When turning the machine, said section A is lifted to separate the sensor B from the ground thus to loosen the wire 21. Then the rotary (a) is stopped to drop the engine speed. |
