'AN IMPROVED POWER TRANSMISSION WITH PLANETARY GEAR BOX HA VING BUILT IN MOTOR FOR SPEED REDUCTION AND POWERING A COAL CRUSHING VERTICAL SPINDLE MILL'

摘要

The invention relates to an Improved transmiSSion where a planetary gear box IS made with a motor bUilt In with the same for speed reduction and powering a coal crushing vertical spindle mill The gear box comprising a sun gear (04) mounted on a shaft, a plurality of planet gears (05) with planet carner (09), a ring gear (06), an output flange and a plurality of thrust pads (08) for transmitting grinding loads of a coal crushing mill to the housing and then to the foundation, wherein an Induction motor rotor (10) along with a stator (11) disposed around It IS provided at the bottom of the Planetary gear box for rotating a vertical shaft (03) fitted with the rotor (10) for transfernng the motion to the sun gear driving a plurality of planet gears (05) housed In a planet carner (09) rotating on a stationary ring gear (06) and connected to a rotary table fixed to a bowl for grinding when the said rotor (10) and the sun gear (4) rotates In the same vertical aXIs