The principle of electro-hydraulic lifting platform
Hydraulic oil made certain pressure vane pump, the oil filter, flameproof electromagnetic directional valve, throttle valve, hydraulic control one-way valve, balance valve into the lower cylinder, the hydraulic cylinder piston upward movement, improve the weight, the upper cylinder oil return by the flameproof electromagnetic directional valve back to the fuel tank, the rated pressure through the overflow valve adjustment, observing the pressure gauge pressure gauge reading values. This is one person lift.
The piston of the cylinder moves downward (i.e. the weight drops). The hydraulic oil enters the upper end of the liquid noon through the explosion-proof electromagnetic directional valve, and the oil return from the lower end of the liquid xenon returns to the oil tank through the balance valve, the hydraulic control check valve throttle valve and the flameproof electromagnetic directional valve. In order to make the weight drop smoothly, the brake is safe and reliable, the balance valve is set on the oil return road, the balance circuit and the pressure is maintained, so that the falling speed is not changed by the weight.
The throttle valve regulates the flow rate and controls the lifting speed. In order to make the brake safe and reliable and prevent accidents, the hydraulic control check valve, namely hydraulic lock, is added to ensure the safe self-lock when the hydraulic pipeline is accidentally burst. Overload audible alarm is installed to distinguish overload or equipment failure.
The electro-hydraulic lifting platform mainly has several characteristics:
1, the machine is light weight, excellent mobility, suitable for single operation.
2, special between the mast regulating wheel device, smooth and free lifting.
3, compact structure, transport state size is tiny, can enter the car of the general elevator and can smoothly through the door and narrow passage.
4, double protection of the leg structure, the work is safer, and can be close to the working face lifting operation.