System for providing automatic feedback and adjusting transmittal pulling force for transporting glass fragment

A system for providing automatic feedback and adjusting transmittal pulling force for transporting glass fragment, the system comprises a delivery machine, a glass broken machine and a recycle box, wherein the glass fragment is transmitted by the delivery machine and triturated by the glass broken machine, and the triturated glass fragment is then transported to the recycle box, the delivery machine comprising a driving motor, a conveyer belt and two driving rollers, wherein the conveyer belt surrounds the two driving rollers, the driving rollers are driven by the driving motor to rotate the conveyer belt, and the glass fragment on the conveyer belt is transported into the glass broken machine for triturating and recycling, wherein, the system further comprises an electromagnetic control system connected to the two driving rollers to automatically adjust the transmittal pulling force according to distance between the two driving rollers, the electromagnetic control system comprises a battery, two magnetic coils, an ampere meter and a positive and negative current feedback circuit, the two magnetic coils comprises two electromagnets that are located facing towards each other to bring the opposite electromagnetic repulsive force on an electric current, the electric current is adjusted the positive and negative current feedback circuit.