Lifts Lifts principle principle: hydraulic oil is formed by the vane pump some pressure, the oil filter, explosion-proof solenoid valve, throttle valve, check valve, balance valve into the lower end of the hydraulic cylinder, the liquid cylinder piston upward movement, heavy lifting, 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. Hydraulic cylinder piston downward movement (both heavy falls). -Oil explosion-proof solenoid valve into the cylinder upper end, a 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, Sanhe lifts, balancing valve in the oil return path is set, the balance circuit, keeping pressure on the rate of decline from the weight change, the throttle valve regulates the flow, control the lifting speed. For the safe and reliable braking, to prevent accidents, increase check valve, namely hydraulic lock, ensure that when unexpected burst hydraulic line can be safely self-locking. Overload installed voice alarm, to distinguish overload or equipment failure. The electronic control system can be controlled by the rotation of the motor explosion-proof button, so flameproof electromagnetic valve commutation, single fork lift to keep the load lifted or lowered, its own lift and adjust time delay by "LOGO" program, Avoid frequent starting motor caused the lift is not flexible, the card machine phenomenon, prolong life. ⒈ torque converter hydraulic oil shortage inability ⑴ ⑵ ⑶ less backpressure regulator improper torque converter oil quality check (if misuse hydraulic transmission oil), the amount, check the torque pressure regulators, back pressure valve and its set pressure value ⒉ power shift failure ⑴. quick return valves, valves, power shift valve, valve appears stuck, internal leakage ⑵. oil pollution check valve stuck exclude reason and make the appropriate filter or Replace hydraulic oil single fork lifts, heavy generous (online consultation), Three Rivers lift provided by the generous Henan heavy machinery Limited. Heavy Machinery Co., Ltd., Henan Province, generous (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) is Zhengzhou, engineering, construction cranes leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. In heavy generous leadership with the staff warmly welcome all inquiries negotiations to create a better future for heavy generous.