| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a valve operating device utilizing the features of a normal/reverse rotation prevention function by reducing distributed torque at an input side, capable of very efficiently obtaining output torque at an output side, capable of taking much operational distributed torque, and achieving a compact structure. <P>SOLUTION: This valve operating device includes: a means for inputting rotation; a worm gear mechanism including a rotary shaft rotated by the means and provided with a worm gear 5 and a worm wheel 3 meshed with the worm gear 5; a cyclone speed reducer inputting the rotation of an input shaft axially supporting the worm gear 5 to perform speed reduction output; and a stem engagement shaft 104 for transmitting the rotation output from the cyclone speed reducer to a valve stem. The normal/reverse rotation prevention function by the meshing between the rotary shaft and the worm wheel 3 is obtained, output torque is efficiently obtained by the cyclone speed reducer, and a compact structure is achieved by the combination of the worm gear mechanism and the cyclone speed reducer. <P>COPYRIGHT: (C)2012,JPO&INPIT |
