Building material mixing machine - has coated driving roller in frictional contact with tool ring vertical wall

摘要

The machine for mixing building materials etc. has a stationary hopper, above which there rotates a driving ring with bearing sleeves protruding inwards for tools immersed in the hopper. The vertical outer wall of the driving ring is in frictional contact with a coated driving roller, and the ring is supported on the hopper by separate thrust and radial-load bearing rollers, easily accessible from outside. The running surfaces of these rollers are covered with elastic material, and their spindles are mounted in bearing brackets fixed to the hopper.