Types of the shaft spacing and length of the belt is constant and variable gearing driven wheel radius

The present invention belongs to the technical field of mechanical transmission, particularly relates to the transmission types of the shaft spacing and length of the belt constant and variable radius of the driven wheels, comprising a driving wheel and a plurality of sets of transmission assembly groove, capstan belt wheel connected to a driven, and the driving wheel compensation is provided between the gear wheel; respective drive grooves composition comprising active ring groove, the groove and the endless driven compensating groove, each ring groove surrounding the active to the driving wheel, and a diameter equal; each of the compensation ring to compensate wheel circumferential groove, and ranging in diameter; each driven ring surrounds the groove on the driven wheel, and varying diameter; for each of the transmission assembly when the drive grooves, respectively, under the same belt length, to achieve the different speeds of the driven wheels. Advantageous effects of the present invention are: the use of a belt with a driven wheel connected to the driving wheel and of different radii with the radius, then the tension of the belt by compensating for the wheel, can achieve different output shaft rotational speed, no need to replace the belt of different lengths, material of low cost, good universality; simple embodiment.