SPEED-CHANGING AND DIFFERENTIAL TRANSMISSION AND MOTOR AND TRANSMISSION UNIT

摘要

A speed-changing and differential transmission includes a speed-changing section and a differential section. The speed-changing section has an input stage and a load stage. The sun wheel of the load stage can be operatively connected to at least one planet wheel of the input stage via a planet carrier. At least one planet wheel of the load stage can be operatively connected to the annulus of the input stage via a planet carrier. One of these operative connections is configured as a selectable connection and the other is configured as a fixed connection such that through use of a coupling device, the annulus of the input stage can be operatively coupled to the planet carrier of the load stage, or the sun wheel of the load stage can be operatively coupled to the planet carrier of the input stage.

主权项

1. A speed-changing and differential transmission, comprising:
a housing; an input shaft; two output shafts disposed coaxially with said input shaft; a differential section configured as a spur wheel differential; a speed-changing section having two planetary stages, namely an input stage and a load stage; said input stage having a sun wheel, an annulus, and at least one planet wheel, said sun wheel of said input stage being operatively connected in said input shaft; said load stage having a sun wheel, an annulus, and at least one planet wheel, said annulus of said load stage being fixed in relation to said housing; said sun wheel of said load stage being operatively connectable to said at least one planet wheel of said input stage via a planet carrier of said input stage for defining a first operative connection, said at least one planet wheel of said load stage being operatively connectable to said annulus of said input stage via a planet carrier of said load stage for defining a second operative connection, one of the first and the second operative connection being configured as a selectable connection and a respective other one of the first and the second operative connection being configured as a fixed connection; and a coupling device configured to provide the selectable connection such that said annulus of said input stage can be operatively coupled to and decoupled from said planet carrier of said load stage or such that said sun wheel of said load stage can be operatively coupled to and decoupled from said planet carrier of said input stage.