| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: bucket auger includes an annular auger with an internal screw auger made in the form of a spiral. The bucket auger has a broadening in the screw auger in the lower part with a soil intake opening; with that, spiral winding is made on the inner and outer surfaces of the broadening, and a drive of mutual opposite rotation of annular and screw augers is made by means of gear transmissions.EFFECT: improving capacity; performing a compacted base.4 dwg |
