Fuel rod traceless longitudinal transmission device

The utility model belongs to the technical field of mechanical belt conveying systems and control, and particularly relates to a fuel rod traceless longitudinal conveying device. Generally, the belt pulley comprises two belt pulleys and a connecting belt to form a belt pulley system, one belt pulley connected with a motor serves as a driving wheel, the other belt pulley serves as a driven wheel, when the output power is insufficient or some special conditions exist, the driven wheel part can be connected with the motor to serve as the driving wheel, and at the moment, the whole system is a system with double outputs. In the application process, it should be guaranteed that the two motors have the same output, or else, a sliding belt will be caused. According to different space fields and size requirements, the belt of the belt pulley can be designed to be short or long, and besides the two belt pulleys, some driven wheels playing a supporting role and tensioning wheels guaranteeing enough tension need to be a