Mobile dock ramp has spread to every corner of social life, the use of more and more widely, whether it is construction, civil engineering, and people's daily lives are inseparable from dock ramps.
The principle of dock loading ramp is very easy. A certain pressure of hydraulic oil from the vane pump, the filter, explosion-proof solenoid valve, throttle valve, 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 back to the tank, which is adjusted by the rated pressure relief valve, pressure gauge watching the pressure gauge readings.
The hydraulic cylinder piston downward movement (both heavy falls). Hydraulic oil through explosion-proof solenoid valve into the upper end of the hydraulic cylinder, the lower end of the hydraulic cylinder return oil through balancing valve, check valve, throttle valve, 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, keeping pressure on the rate of decline from the weight change, the throttle valve regulates the flow, control the lifting speed. To make braking safe and reliable, to prevent accidents, increase pilot-operated check valve, namely hydraulic lock to ensure that when the hydraulic lines can accidentally burst self-locking safety. Overload installed voice alarm, to distinguish overload or equipment failure. The hydraulic principle insure the safety of the container ramp.
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