Safety protection device for elevator maintenance

A safety protection device for elevator maintenance comprises two guardrail plate assemblies, each guardrail plate assembly comprises a wall connecting frame and a guardrail plate, each wall connecting frame is provided with an electromagnetic adsorption device and a positioning table, and each electromagnetic adsorption device comprises a first coil circuit with a first coil; the switch-on circuit is used for connecting the two coil circuits I in series to form a coil main circuit, and the coil main circuit is connected to a maintenance loop containing a maintenance switch in series; movable locking rods and second coil circuits with second coils are arranged in the two guardrail plates respectively, the movable locking rods are arranged in the corresponding guardrail plates in a sliding mode, the second coils are fixedly arranged in the corresponding guardrail plates, and the second coil circuits are connected to the main coil circuit in parallel; a toggle switch is fixedly arranged in the guardrail plate c