| 摘要 |
PURPOSE:To prevent scattering of load and efficiently perform the unloading of bulk load by hanging a special belt prepared with lug pieces from the end to the root of the boom as one loop, and cover the surface of the carrier side of the belt with a seal belt. CONSTITUTION:Variable angle bent portions 3, 4 are prepared to the boom 2 pivoted to the swing frame 1, to make the main boom portion 2a, the middle boom portion 2b and the end boom portion 2c. And the belt wheels 5-9 are installed respectively at the bending portions 3, 4 of the boom 2, end of the end boom portion 2c, root of the main boom 2a and in the swing frame 1, then hang over one body special belt 10 prepared with lug pieces through the end of the boom 2 to the root. The special belt 10 consists of corrugated plate lug pieces 12 made of elastic material such as rubber at both sides of the belt 11, and preparing cross pieces 13 between the lug pieces 12. To the carrier side of the special belt 10, a seal belt 15 is arranged endlessly to cover the whole surface to prevent scattering of the load. |
