Trolley, has resting units provided at drive gear wheel, which intervenes in cavities, and swiveling blocks of stand plates with active gear wheel, which combs drive gear wheel to rotate drive gear wheel
摘要
<p>The trolley has wheel bases (2) with cavities on its bottom side. Through holes of a rod and a holder receive a swiveling unit. The swiveling unit is connected with a drive gear wheel at an outer side of the holder. Resting units are provided at the gear wheel, which intervenes in the cavities. Each swiveling block of a stand plate consists of an active gear wheel. The active wheel combs the drive wheel to rotate the drive wheel.</p>
