| 摘要 |
PURPOSE:To improve comfortableness in riding in a vehicle and also the safety of the body of the vehicle, by connecting each of the oil rooms of right and left suspension cylinders to an accumulator via a valve, and providing such arrangement as in which the valve is put in its first or second cutoff position when a pressure difference is generated between the right and left oil rooms. CONSTITUTION:An axle 1 in a travelling vehicle such as a dump truck is mounted thereto in such a manner that it is capable of pivoting about its center a, the right and left ends of the axle 1 being connected to the body of the vehicle by right and left suspension cylinders, 4, 3. In this case, each of the extension oil rooms 9, 9 of the cylinders 4, 3 is connected to an accumulator 16 via each of right and left piping 14, 13 and via a valve 15. The spool 15a of the valve 15 is so arranged to be held in its communication position 1 by a spring 17 and also to be put in its first or second cutoff position II, III by a pressure difference between the right and left piping 14, 13; i.e., the spool 15b is switched by the pressure difference which is generated between the right and left extension rooms 9, 9 when the body of the vehicle oscillates horizontally with respect to the axle 1. |
