| 摘要 |
PURPOSE:To enable vertical movement of a load-carrying platform in condition to maintain it in a horizontal state, by a method wherein a longitudinal guide part is formed on the working machine side and a catching part is formed at the forward end of a link. CONSTITUTION:With a swing arm 3 of a tractor 1 lifted and swung, the forward ends of right and left lower links 2 are swung in condition to point upward, and as a result, a load-carrying platform 10 is raised through a working machine mounting frame 9. In which case, the load-carrying platform 10 is raised vertically as it is guided through engagement of a guide roller, acting as a catching part 8, with top and lower holes serving as a longitudinal guide part 7. Thereafter, when the guide roller is brought into contact with under faces of the top and lower oblong holes and the swing arm 3 is further swung, the load-carrying platform 10 is tilted forward and is stopped. Reversely, when the swing arm 3 is swung downward, downward swing of the right and left lower links 2 and the guiding function of the guide roller and the top and the lower hole cause the load-carrying platform 10 to be lowered and brought to a stop. |
