Variable speed principle of planetary gear mechanism

Because the single-row planetary gear mechanism has two degrees of freedom, the liugong loader accessories have no fixed transmission ratio and cannot be directly used for variable speed transmission. In order to form a certain ratio of transmission mechanism, wheel, gear ring, the sun and the planets frame must be one of the three basic components to fixed (even if the speed is zero, also known as brake), or motor under certain constraints (i.e., to make the component at a fixed speed rotation), or will be a two basic elements connected together (that is, both speed), make the planet row only one degree of freedom, having certain transmission.

Use model：835、842、50C、855、50CN、856