Sweep auger with drive assembly
A sweep auger having an auger that is rotated about its longitudinal axis by a power means and a drive assembly having at least three reduction gears that operatively connect the auger to a drive wheel such that the drive wheel rotates at a speed that is substantially less than the rotational speed of the auger.
1. A sweep auger apparatus for use in a circular storage bin, the apparatus comprising:
an auger having a longitudinal axis extending radially from a center of the bin;
a power means operatively connected to a first end of the auger for rotating the auger about its longitudinal axis;
a drive assembly mounted on a second end of the auger that is operatively connected to a drive wheel and rotates the drive wheel at a speed substantially less than the speed of rotation of the auger to advance the drive wheel in a radial path around the bin;
said drive assembly having at least three reduction gears operatively connecting the auger to the drive wheel; and
wherein a first of the three reduction gears is rotatably mounted on a first shaft in alignment with the rotational axis of the auger, a second of the three reduction gears operatively connected to the first reduction gear and mounted on a second shaft, and a third of three reduction gears rotatably mounted on the second shaft and rotatably engaging the drive wheel, said drive wheel having a sprocket chain wherein the third of three reduction gears is rotatably disposed within the sprocket chain.
2. The apparatus of claim 1 wherein the second reduction gear is positioned rearwardly and upwardly of a first reduction gear.
3. The apparatus of claim 1 wherein the second reduction gear has a diameter greater than the diameter of the first and third reduction gear.
4. The apparatus of claim 1 wherein a ratio of the speed of rotation of the auger in relation to the speed of rotation of the drive wheel is at least seventeen to one.