| 摘要 |
<p>PURPOSE: To supply hydraulic oil without using hydraulic hoses between the front head and the rear end of a plurality of stages of arms assembled so as to make a telescopic form. CONSTITUTION: This mechanism is constituted of a pair of oiling units 31, 32 installed at the intermediate arm of an extensibe arm and internal hollow oil feeding pipes 61, 62, 71, 72 transferring to the reverse direction from respective oiling units 31, 32 and sliding airtight against the oiling units 31, 32. A hydraulic source installed on a vehicle body is connected to one front end of oil feeding pipes 61, 71 and a hydraulic driving mechanism of abucket is connected to the other front end of oil feeding pipes 62, 72. Hydraulic oil is fed from the vehicle body side to the oil feeding pipes 61, 71 to conduct it from the other oil feeding pipes 62, 72 to the hydraulic driving mechanism of the bucket through the oiling units 31, 32.</p> |
