| 摘要 |
The telescopic crane arm (20) has a boom extension (22) that is moved telescopically relative to a boom (21). A hydraulic line is arranged in the crane arm for an implement (101) that is attached to the crane arm and operated hydraulically. The hydraulic line is provided with two tubes moving relative to each other. A connection is formed from the tubes to an oil compensation chamber arranged inside the crane arm to compensate for effects of changing the length of the crane arm. The tubes and oil compensation chamber are formed inside the boom extension. |
