Safety isolation device for railway power supply system

The utility model discloses a safety isolation device for a railway power supply system. An existing railway safety protection device is insufficient in anti-collision and anti-seismic aspects and cannot be isolated functionally. An upper pulley channel and a lower pulley channel are arranged on two side surfaces of a main control board in a shell, rubber rollers are arranged on the inner walls of two sides of the shell, and the rubber rollers are in rolling connection with the pulley channels; the bottom and the top of the main control board are supported through insulating rubber rails. The main control board is provided with an isolation system and a data processing system. The left side, the right side, the top and the bottom of the main control board are effectively supported through the rubber rollers and the insulating rubber rails, the main control board is prevented from displacement, and the anti-collision and anti-seismic performance of the whole device is improved; a secure operating system is ado