| 摘要 |
PURPOSE:To prevent damage and liquid leakage due to obstructions by setting a parking brake, an outer piping and a distributor of a hydraulic motor from the center of the width of the center of a crawler shoe up to its inner end so as to form a piping for connecting them together in a casing. CONSTITUTION:A gear reduction system 31 is mounted on the outer side of a casing 3, and its output end is connected to the outer end art of a revolving wheel 21 through a bolt 32. A hydraulic driving system composed of a hydraulic motor 12, the reduction system 31 and the revolving wheel 21 is located within the width of a crawler shoe 33, a bracket 34 is provided, and the shoe 33 travels through a shaft 35. A timing plate 17 formed with a distribution valve of the hydraulic motor 12 is combined with the flange part 16 of a controlling block 10. Also, a parking brake 44 is housed in the flange part 16 and is detachably attached thereto by a bolt 45 to be located within the width of the crawler shoe 33, and consequently length of piping is saved. |
