This invention discloses a multi-level redundant protection
elevator anti-overshoot and anti-fall composite braking and buffer
system, including a guide rail electromagnetic adsorption braking module, a directional
airflow damping deceleration module, a
robotic arm-
type safety airbag buffer module, a working condition detection unit, and an
intelligent control and power supply redundancy module. The guide rail electromagnetic adsorption braking module includes excitation coils, insulated fixing brackets, and segmented switch units arranged in sections along the
elevator's T-shaped vertical guide rail. The directional
airflow damping deceleration module includes directional air supply modules and segmented
airflow ducts installed at the top of the
elevator shaft and on the vertically segmented side walls of the shaft. The
robotic arm-
type safety airbag buffer module is embedded in the lower surface of the elevator shaft's top
floor slab. The working condition detection unit integrates a car speed sensor, a position
encoder, a load acquisition unit, an acceleration monitoring unit, an overshoot / undershoot limit prediction switch, and an
airbag trigger distance sensor. This invention integrates a three-level progressive protection structure to achieve flexible protection throughout all working conditions and the entire travel distance.