AC solenoid burnout prevention device of shutter automatic closing machine

摘要

This study is about the anti loss device of AC solenoid valve of the anti addiction automatic shutdown machine. According to the smoke induction in case of fire, DC solenoid valve is started,Due to the start of DC solenoid valve, the brake lever connected with AC solenoid valve is forced to be released to prevent addiction and automatic fall, so the fire protection area is controlled at the vehicle end,After the anti addiction device falls down automatically, it will automatically switch the repair switch inside the linkage controller, forbid the operation of the AC solenoid valve linked with the DC solenoid valve, so that the AC solenoid valve will not load load, and prevent the loss of the power solenoid valve.