| 摘要 |
PURPOSE:To prevent a cylinder from being deflected, a dumping plate from oscillating and strains from being generated in the cylinder due to welding, by a method wherein a plurality of cylinders are engaged and connected to each other by tying means, and a dumping plate is moved by the cylinders. CONSTITUTION:The dumping plate 3 is fitted to a rear body 1 so that it can be moved in the longitudinal direction, and is moved by the cylinder 4. The cylinder 4 consists of a plurality of cylinders 41, 42 connected to each other by the tying means 5 such as a clamp. The tying means 5 is provided with a roller at a lower part thereof to support the weight of the cylinder 4, so that the cylinder 4 is prevented from being deflected even when the stroke thereof is long. Accordingly, since the cylinders are connected to each other by the tying means 5, it is made possible to allow the generation of oscillation and torsion. |
