The Lift Door Limit Switches device is one of the elevator safety protection devices, mainly composed of a locking hook, controller, and locking hook driving mechanism.
When the elevator starts or runs, the locking device will lock the elevator floor door to prevent passengers from accidentally entering the wrong elevator or the danger caused by not closing the elevator door properly. The controller is the core component of the locking device, responsible for controlling the elevator floor door and the locking hook drive mechanism. When the elevator enters the operating state, the controller will issue a locking command, causing the locking hook to automatically lock the elevator floor door. The locking hook driving mechanism provides power to the locking hook and locks the elevator floor door. There are many types of locking hook driving mechanisms, such as electric locking hook driving mechanisms, mechanical locking hook driving mechanisms, etc. When the elevator stops running or encounters an abnormality, the locking command will be released, the locking hook will be unlocked, and the elevator floor door will be able to open normally.
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