Elevator system provided with sucking disc safety device

The invention relates to an elevator system provided with a sucking disc safety device. The elevator system comprises an elevator system body and the sucking disc safety device, wherein the elevator system body comprises a lift car, a counter weight and a traction device; the traction device comprises an electromotor and a traction wheel set; the lift car is connected with the counter weight through a traction rope wound on the traction wheel set; the electromotor drives the traction wheel set to control the lifting state of the lift car; the sucking disc safety device comprises a sucking disc; the sucking disc communicates with a vacuum pump; negative pressure generated by the vacuum pump in the sucking disc drives the sucking disc to firmly suck the lift car stopping at the elevator; andthe lift car is kept in the stable suspension state under the action of the sucking force of the sucking disc. The elevator system adopts the sucking disc safety device to enhance the stability of the lift car stopping at th