| 摘要 |
PURPOSE:To perform an operation for each of specified times strictly in accordance with set time by a method wherein a geared motor having a specified number of revolution is applied as a driving motor, any stopping time for every specified operating time is set to control a rotary hammering spacing time. CONSTITUTION:In case that eight geared motors are arranged in one waste heat boiler, operation of the eight geared motor is performed in series (I), the operation is performed in two independent series sets (II), the operation is performed such that a pair of two units are simultaneously energized to make an entire operation in series (III), a geared motor is applied as one in which 6 seconds are required for one rotation, its stopping time is made variable ranging from 0-999 seconds so as to make a proper setting through a timer, thereby the operation can be performed at any arbitrary time. With this arrangement, the incapability of operation due to a difference in inertia of hammer or energizing torque is not found and so operation for any time can always be carried out strictly in accordance with set time.
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