Belt Variable-Speed Drive

The invention refers to machinebuilding, in par¬¬ti¬cular to variable-speed drives with flexible joints. Technical result is smooth control of the diameters of wheels joints by the construction of the variable-speed drive. The device compsises mounted on the shafts 2, 3 belts 4, 4' and driven 5, 5' wheels Vee-belt 1 and joint-lever mechanism 13, 14 controlling diameters of belts and driven wheels, which are made in the form of two identical plate-like wheels wilth sectors one of which is fixedly mounted on the shafts 2, 3 and another-with the possibility of axial displacement. The jacks 10, 11 are mounted by means of bearings 8, 9 disposed on the rim of the plate-like movable wheels 4' and 5' and 11 wheres on the ends of diameter controlling wheels of the leverage there are Vee belt mechanisms having curved surface that are in constant contact with the jacks 10, 11 and between the plate-like wheels with sectors there is a spring. 3 fig.