Anti-theft isolation device

The utility model relates to an anti-theft isolation device which is characterized in that a steel frame is fixed on the ground, a top plate is arranged on the steel frame, a fixed pulley is arranged at each diagonal end of the top plate, rolling door shafts are arranged on the front side and the rear side of the top plate respectively, and the fixed pulleys correspond to the rolling door shafts; a circle of brake holes are formed in the circumferential face of the outer end of the rolling door shaft, a rolling door leaf is rolled on the rolling door shaft, and the lower end of the rolling door leaf is connected with a drooping shaft. A bottom shaft is further fixed to the back face of the pedal, an inhaul cable is wound around the fixed pulley, one end of the inhaul cable is connected with the outer end of the bottom shaft, and the other end of the inhaul cable is inserted into a brake hole through a slender rod; and spring locks are arranged at four corners on the pedal and are vertical to the drooping shaf