| 摘要 |
<p>A concrete mixer in this invention comprises an elastomeric lug belt (12) carried by a first set of roller drums (14) at least one of which is driven, the lug belt (12) having a plurality of spaced elastomeric lugs (13) thereon, and an elastomeric base belt (17) carried by a second set of roller drums (18) and depending between two of these roller drums (18) to form a part-loop portion (19), at least one of the base belt roller drums (18) also being driven to drive the lug belt (12) past the base belt (17) in a mixing zone (20) in the part-loop portion (19), such that the base belt (17) moves in the opposite direction from the direction of movement of the lug belt (12).</p> |
