The elevator, as a functional component, has been widely used in various industries. For example, transmission devices and CNC actuators in the mechanical industry; Roll motion devices in the metallurgical industry, ladle lifting and flipping devices in steel mills, and motion transmission devices in places beyond human reach; Vehicle lifting frames, large flexible clamping, indexing fixtures, welding robots, etc. in the railway vehicle industry; Lifting devices and automatic or remote control opening devices for large doors and windows in the construction industry; Gate opening devices, radar and solar remote sensing devices for water conservancy and other industries; Lifting devices for medical equipment, lifting stages, and automotive manufacturing industries; And transmission devices for aerospace, defense and military industries, etc. In fact, worm gear screw elevators can be used almost anywhere where mechanical displacement transmission is required.