The display screen of the LED advertising truck can be equipped with a hydraulic lifting system, which has the advantage of raising the LED display screen to a high place so that people in the distance can also see it, thus achieving a good publicity effect. Since the LED advertising truck uses hydraulic lifting, the lifting speed directly affects the lifting speed of the LED screen, which also affects the overall efficiency. But this is not a malfunction, but caused by some factors. The following CLVEHICLES.COM will take everyone to understand the reasons that affect the hydraulic lifting speed:

There are two main factors that affect the hydraulic lifting speed: the diameter of the cylinder and the flow of hydraulic oil. The speed of hydraulic lifting is inversely proportional to the cross-sectional area of the piston rod of the cylinder and directly proportional to the flow of hydraulic oil. When the cylinder diameter is fixed, if the hydraulic lifting speed becomes slower, it is necessary to analyze the hydraulic oil flow first. When the hydraulic lifting speed slows down, many people will immediately adjust the overflow valve in an attempt to increase the pressure of the hydraulic system to increase the lifting speed. In fact, this is a very wrong approach. The relief valve is configured to prevent excessive pressure in the hydraulic system and protect the hydraulic system. It is very dangerous that the setting value of the relief valve exceeds the safety value of the hydraulic system design, and increasing the hydraulic system pressure cannot increase the hydraulic lifting speed. Only when the hydraulic lift cannot be started with load, the hydraulic system pressure should be checked. If the pressure is lower than the normal range, the relief valve setting value can be adjusted.

Therefore, when the hydraulic lifting speed becomes slow, the factor of hydraulic oil flow should be given priority. In addition, the hydraulic pipeline is also a very important sanitation, and the hydraulic pump is also an important factor affecting the flow of hydraulic oil. The hydraulic pump that has been used for too long is also prone to problems. When the hydraulic lifting speed becomes slow, check whether the hydraulic pump oil supply flow is stable. If the quality of the hydraulic oil is not good, there are a lot of impurities, which will also block the speed and slow down, so keep the hydraulic oil clean.