| 摘要 |
PURPOSE:To make it possible to execute the speed changing operation very swiftly, by providing a driving cylinder and a feedback mechanism between the speed changing shifter and the speed changing operation lever of the friction type infinitely speed changing equipment. CONSTITUTION:The opertion equipment 2 is provided with a driving cylinder 14 for the shifter 13, and also the 3-position switching type control valve 15 to said cylinder 14 is connected to the speed changing operation lever 16 and the piston shaft of the cylinder 14 through the feedback mechanism 18. As for this mechanism 18, one end is connected to the lever 16 and the other end is connected to the piston shaft 17. And, when the lever 16 is operated to a desired speed changing operation position P side, and the piston shaft 17 is moved based on said operation, the spool shaft 22 is moved to the open position P1 or P2 of the valve 15, and subsequently it is automatically returned to the close position P0. |
