| 摘要 |
A hydraulic cylinder having a piston rod is disclosed, said piston rod being surrounded by an annular pressure chamber and being guided in a through-aperture in the hydraulic cylinder. A split bushing forms a split seal with the piston rod over a particular axial length and in a precise fit with the piston rod. A first circular-cylindrical annular gap is formed on the outer circumference of the split bushing, with the result that the split bushing is inserted into the hydraulic cylinder with radial play. The annular gap is fluidically connected to the pressure chamber. A seal is arranged on the outer circumference of the split bushing and is at an axial distance from a first end side, facing the pressure chamber, of the split bushing. As a result, the working pressure of the pressure chamber can apply counter-pressures that are directed radially inwards to the split bushing, over a section of the outer circumference that extends from the pressure chamber to the seal, said counter-pressures counteracting the forces that are directed radially outwards and arise in the split seal. Thus, the split bushing is relieved of mechanical loads. |
