| 摘要 |
PURPOSE:To reliably discharge a drain without changing the fitting position of a discharge valve even if the car height is changed by directing the inversion section of a cylindrical body upward in a protruded shape and providing a drain discharge valve between the lower end of an outer cylinder section and an axle. CONSTITUTION:A car height adjustment unit 14 is arranged between an axle and a car body 12, and a fixed, closed hydraulic chamber 24 is provided in the cylinder 16 of the unit 14. An inversion section 42 is provided on the longitudinal, middle point of a flexible, cylindrical body 38; an inner cylinder section 40 and an outer cylinder section 44 are coaxially arranged; the tip of the outer cylinder section 44 is fixed to a drain pan 50; and a drain discharge valve 64 is provided on the drain pan 50. Accordingly, when the car body 12 is moved up and down, a car height detector 62 detects it, the pressure in a pressure air chamber 52 is increased or decreased to adjust the height automatically. The drain generated in the chamber 52 is discharged outside via a through hole when the chamber 52 is communicated to the outside. |
