| 摘要 |
<p>PURPOSE:To prevent cylinders being partly or one-sided worn by piling said cylinders formed into the same shape to form them into a vertical single row multi-cylinder type, and connecting pistons with piston rods freely to incline. CONSTITUTION:The first cylinder 1 and the second cylinder 2 both formed into the same shape are piled up to form them into a vertical single row multi-cylinder type, while sliding surfaces 64, 66, 75, 77 are formed on the first piston 6 and the second piston 7. A spherical head end part 91 and a spherical end edge part 92 are formed on a piston rod 9. The sliding surfaces 64, 66, and the spherical head end part 91 are engaged with each other, while the sliding surfaces 75, 77 and the spherical end edge part 92 engeged with each other. Hereby, the pistons 6, 7 and the piston rod 9 are connected with each other freely to incline, so that the piston rod 9 transmits only force for vertical motion along a shaft, allowing the pistons 6, 7 to move following the cylinder surface. Thus, it is possible to prevent the cylinder surfaces from being partly or one-sided worn.</p> |
