| 摘要 |
A motorized vehicular vacuum street sweeper (2) has a hopper (12) for receiving suctioned debris and includes unloading devices (36) provided by a flexible sheet-like wrapper (38) in the hopper forming a receptacle cavity (76). The wrapper is flexed by actuation devices (74) to shrink the cavity and expel debris through an exit door (40) in the hopper.
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