| 摘要 |
A tag axle suspension that can adjust the load forces on tag axles or the like, with the tag axle supported upon swinging rigid torque arms pivoted to the vehicle frame at its opposite sides with leaf springs concentrically mounted with and parallel to the torque arms, and with hydraulic piston motors extending from the frame of the vehicle to each torque arm and a two-way hydraulic pump motor system. The hydraulic motors can operate one way to apply solid lifting forces directly to the torque arms intermediate the ends thereof to raise the tag axle. Upward forces on the tag axle are transmitted to the leaf springs, and by them to the hydraulic pistons to urge them upwardly, their upward movement being resiliently opposed by interposition into the hydraulic system of an accumulator having a predetermined gas pressure above the liquid.
|
