the hydraulic system design

With the development of hydraulic technology, engineering machinery hydraulic drive system has been very common. From a technical point of view, any kind of hydraulic transmission system shall meet the reasonable design, simple structure, easy to use, high efficiency requirements. Hydraulic system will have a direct impact on the performance of the pros and cons of construction machinery, hydraulic steering systems use this article on Troubleshooting common to talk about some of the knowledge and practices. Hydraulic steering system a heavy steering a) if the fast forward or slow rpm steering wheel are heavy and no pressure, oil level may be low, hydraulic hose assembly the oil viscosity is too large or the valve body check valve failure. First check the oil tank and hydraulic oil viscosity, if the oil level is lower than the standard height of adding hydraulic oil, oil viscosity too should be replaced as appropriate viscosity hydraulic oil, such as the viscosity of the oil level should normally decompose steering. If the body of the check valve ball is lost then load the new ball, if the ball stuck in the dirt should be cleaned, if the one-way valve sealing tape poor contact with the ball ball impact of the application, making it reliable sealing. 2) If you turn the steering wheel slowly turn the steering wheel light or fast sink, it may be caused by insufficient fuel supply pump. And the viscosity of the oil level should be checked under the premise of a suitable pump is working properly, or if a small amount of hydraulic oil pressure is low and should be replaced repaired. 3) If the empty load or light load shift light and heavy-duty steering heavy, it may be lower than the pressure relief valve block valve working pressure or relief valve core is dirt stuck or banjo fitting spring failure or damage caused by seals . Should first adjust the working pressure relief valve in the purge relief valve adjustment is ineffective when the decomposition, such as spring failure, damaged seals should be replaced. 4) If the hydraulic cylinder when turning the steering wheel does not move when you move and the issue of irregular sound, it may be the steering system or steering hydraulic cylinder with air leakage caused by too much. Open the tank cap should check whether there is a bubble in the tank, if the first check for leaks at the suction tank, and then check the pipe connections are intact, and the exclusion of air in the system. Such as when the hydraulic cylinder is still not moving when moving piston seal condition should be checked, if necessary, replace the seals.