| 摘要 |
PURPOSE: A component and color change testing device for hydraulic oil according to the pressure in a sealed space is provided to easily measure the change of components and colors of the hydraulic oil generated by repetitively pressurizing the hydraulic oil flowing in a sealed space of a hydraulic cylinder. CONSTITUTION: A component and color change testing device for hydraulic oil according to the pressure in a sealed space includes a hydraulic cylinder(20), a second hydraulic cylinder(30), a link path(40), a first fluid path(50), a second fluid path(60) and a controller(70). The second hydraulic cylinder is arranged on the position separated from the first hydraulic cylinder. The link path connects the first hydraulic cylinder with the second hydraulic cylinder to supply the hydraulic oil discharged from the first hydraulic cylinder as the hydraulic oil for the compression operation of the second hydraulic cylinder when the first hydraulic cylinder is in an expansion operation. The first fluid path applies the fluid pressure to the first hydraulic cylinder to be expanded. The second fluid path applies fluid pressure to the second hydraulic cylinder to be expanded. The controller is connected to the first fluid path and the second fluid path to control the fluid pressure of the first fluid path and the second fluid path. |
