| 摘要 |
PURPOSE:To perform reliable running of an amphibian power shovel over mud. CONSTITUTION:Crawler belts 1 and 1 are attached in a state to run around a pair of float type crawler beds 2 and 2, a machine bed 4 is mounted on the crawler beds 2, and a power shovel 5 is mounted on the machine bed 4. A load-carrying platform 6 is mounted on the machine bed 4 and an under- mentioned impeller 7 for running. Namely, a pair of stands 16 and 16 are arranged on the machine bed 4 and the impeller 7 is elevatably installed to the stand 6. Thus, during running on a ground, the impeller 7 is raised and brought into a state to prevent the occurrence of an obstacle to the crawler belt 1. During running on mud, the impeller 7 is lowered and rotated at a low speed so as assist running of a working vehicle in addition to running of the crawler belts 1. |
