FIELD: machine building.
SUBSTANCE: invention relates to machine building, more specifically, to vehicle chain transmissions with variable gear ratio, depending on load. Chain transmission includes drive wheel with sprockets sectors installed on eccentric axes. Sprockets sectors are enveloped by chain together with driven wheel sprocket. Sprockets sectors have possibility of synchronous rotation relative to eccentric axes in case of load on chain occurence. Sprockets sectors displacement relative to driven wheel center increases or decreases gear ratio.
EFFECT: provided is simplified design.
1 cl, 6 dwg
