Helical gear transmission for transforming rotational speed and torque, has internal teethed hollow wheel and external teethed gear wheel provided in engagement with one another at two opposite diametrical points

摘要

The helical gear transmission has an internal teethed hollow wheel and an external teethed gear wheel staying in engagement with one another and forming a wheel pair, where the internal teethed hollow wheel lies externally and the external teethed gear wheel lies internally. The hollow wheel has a rotational axis that cuts a rotational axis of the gear wheel. The internal teethed hollow wheel and the external teethed gear wheel are provided in engagement with one another at two opposite diametrical points.