| 摘要 |
The present invention relates to a lifting magnet system which adsorbs an object of a ferromagnetic body such as an electric coil which winds a steel plate or a thin steel plate in a round shape and transports the object. When deceleration in a transporting process or deformation in the steel plate occurs, or when the adsorptive power of a magnet does not secure a safety ratio, deflection or up and down vibration can occur to the steel plate adsorbed on the lifting magnet or the thin steel plate wound inside the electric coil. Because the adsorbed object can fall according to the size of the deflection or vibration, drop accidents which cause damage to a human life and the property can frequently occur. Therefore, the lifting magnet system is to safely transport the adsorbed object by detecting the deflection or vibration of the steel plate for alarming during the transporting process through the adsorption of the steel plate or the electric coil by the lifting magnet or by increasing the adsorptive power of the magnet in order to remove the vibration. |
