| 摘要 |
PURPOSE:To transmit a desired speed to a driven side over a wide range by integrally installing two unit actuators and a differential mechanism which takes out the sum or the relative difference between the revolution speeds of the both actuators and transmits said value to an output shaft side. CONSTITUTION:A control means 5 for controlling the first and the second unit actuators 1 and 2 revolves the first and the second driving shafts 3 and 4 in the normal and reverse directions, respectively, and freely increase/decrease- adjusts the revolution speed. A differential mechanism 15 is constituted of bevel gears 6, 7, 8 and 9, a differential belt pulley 10 and engaging shafts 11 and 12, and the differential mechanism 15 takes out the sum or the relative difference between the revolution speeds of the driving shafts 3 and 4 on the basis of the directions of revolution of the first and the second driving shafts 3 and 4, and transmits said value onto the driven side. The above-described mechanisms are integrally accommodated into a frame 16 and operate as one actuator.
|
