| 摘要 |
A device for unloading and cleaning a body of sand-spreading machine consists of a hydraulic cylinder, in which power and adjusted springs are located, a cavity, pressure and drain hydraulic lines. In the hydraulic cylinder a piston is located which is forced by beads against especially bored stepped protrusion of the hydraulic cylinder by the power spring. A ball valve together with the piston forms a cavity, which is connected with the pressure hydraulic line. The valve is installed with possibility of displacement for connecting the pressure hydraulic line with the drain hydraulic line of hydraulic system by means of a regulating choke and the adjusted spring, which by a guiding support contacts with the ball valve. The hydraulic cylinder is fastened by two ends to the load-bearing body. |
