SOUND REMOTE CONTROLLER FOR CRANE

PURPOSE:To execute the rocking preventing operation of a load with good efficiency by outputting a time limiting drive output to a direction opposite to a driving direction initially inputted by the input of a command word relating to a specific activation. CONSTITUTION:After the sound command of 'north', for instance, a command relating to an operating direction, an activating command to the opposite direction, for instance, 'opposite drive' is sound and inputted, thereby, an inching to the south side is carried out. After the sound command of 'drive', 'opposite drive' is alternately inputted after the sound command of 'north', thereby, the driving to the north side, the south side can be alternately carried out. In such a way, a directional characteristic is added to the activating command, for instance, a crane is stopped by the sound input of 'north', 'start' and 'stop' and in order to prevented the rocking, 'north', 'drive', 'drive' and 'opposite drive' are only inputted. According to the rocking, 'drive' and 'opposite drive' are used to easily switch the direction and to match to an operation requiring a quick response such as the rocking prevention, a positioning.