Hydraulic oil from a certain pressure vane pump, the filter, explosion-proof solenoid valve, throttle check valve, balance valve into the lower end of the hydraulic cylinder, the upward movement of the piston cylinder, improve weight matter, the upper end of the hydraulic cylinder return oil through flameproof solenoid valve to the tank, which is adjusted by the rated pressure relief valve, pressure gauge readings by observing the pressure gauge.
Hydraulic cylinder piston downward movement (both heavy fall). Explosion-proof hydraulic oil through solenoid valve into the upper end of the hydraulic cylinder, hydraulic cylinder through the lower back to the oil balance valve, check valve, throttle, explosion-proof solenoid valve to the tank. In order to decrease the weight stable, safe and reliable braking, set the balancing valve, balancing loop back to the oil on the road, keep up the pressure, so that the rate of decline from the weight change, the throttle valve regulates the flow, speed control movements. In order to secure the brake to prevent accidents and increase check valve, namely hydraulic lock, ensure that when an unexpected burst hydraulic lines can safely self-locking. Installed voice alarm overload, overload or equipment failure to distinguish.
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