| 摘要 |
PURPOSE:To increase the maximum stable tilt angle, by independently actuating left and right oil pressure cylinders at not less than critical pressure, in valve devices for opening and closing ducts communicating left and right oil pressure cylinders in response to the internal pressure of the oil pressure cylinders. CONSTITUTION:Valve devices 21a, 21b for opening and closing ducts by induction to the pressure of the upper and lower liquid chambers A, A', B, B' of oil pressure cylinders 15a, 15b are put to the ducts 19, 20 for crosswise connecting said upper liquid chambers A, A' and said lower liquid chambers B, B'. When a car is tilted so that excess compression loads work to the oil pressure cylinder 15a, pressure in the liquid chamber A becomes large with the increase of tilt angle, and pressure in the liquid chamber B' also rises. When pressure in the chamber B' reaches near critical pressure, the pressure also works to an oil pressure chamber 29 to move a valve spool 23, both valve devices 21a, 21b close and the oil pressure cylinders 15a, 15b function as independent air springs. |
