System for automatic feedback and adjust transmittal pulling force of the glass fragment

A system for automatic feedback and adjust transmittal pulling force of the glass fragment, which comprising a delivery machine, a glass broken machine and a recycle box, the glass fragment is transmitted by the delivery machine and triturated by the glass broken machine, and then transported them to the recycle box, the delivery machine comprising a driving motor, a conveyer belt and a driving roller, the conveyer belt is surrounded between the two driving rollers, the driving roller is turn round by the driving of the driving motor to lead the conveyer belt rotating at the same time, and then the glass fragment on the conveyer belt could be transported into the glass broken machine for triturating and recycling, wherein, an electromagnetic control system is provided for automatic adjusting the transmittal pulling force of the conveyer belt depend on the distance between the two driving rollers, which is connecting with the driving roller, the electromagnetic control system comprises a battery, two magnetic coils, an ampere meter and a current negative feedback circuit, two electromagnets of the magnetic coils are located face toward to bring the opposite electromagnetic repulsive force on electricity, the current could be adjusted with the current negative feedback circuit.