Synchronous door knife

The utility model is suitable for the technical field of elevator equipment, and provides a synchronous door vane, which comprises a door vane bottom plate, a door vane base plate, a door vane base plate, a door vane base plate, a door vane base plate, a door vane base plate and a door vane base plate, and is characterized in that the door vane base plate is mounted on a car door sliding plate; the knife arm assembly, the self-locking mechanism, the guide assembly and the unlocking assembly are installed on the door knife bottom plate. The sliding assembly comprises a linear bearing installed on the guide assembly in a sliding mode, and the sliding assembly is in virtual contact with the tool arm assembly; the limiting assembly is mounted on the guide assembly and used for limiting the moving distance of the sliding assembly; the synchronous knife door locking device has the advantages that the structure is simple, and the service life of the synchronous knife door can be prolonged. 本实用新型适用于电梯设备技术领域，提供了一种同步门刀