| 摘要 |
<p>Transport device for underground yards and stopes, in particular for coal mines, constituted by a system of tyre-wheeled, electrical-motor-propelled trolley-vehicles provided with a load-bearing deck (7) equipped with a motor-driven load-translating apparatus (8) based on ball or roller elements, and auxiliary platforms adjustable in height also equipped with a motor-driven system for translating the materials loaded on them.</p> |
