The maintenance of hydraulic equipment should pay attention to the following points
① Controlling oil pollution and keeping the oil clean are important measures to ensure the normal operation of the hydraulic system. At present, serious oil pollution causes frequent hydraulic failures. According to statistics from a large factory, 80% of hydraulic system failures are caused by oil contamination. Oil contamination also accelerates the wear of hydraulic components.
② Controlling the temperature rise of the working oil in the hydraulic system is an important link to reduce energy consumption and improve system efficiency. For the hydraulic system of a machine tool, if the oil temperature varies widely, the consequences are:
a. Affect the oil absorption capacity and volumetric efficiency of the hydraulic pump;
b. The system is not working properly, the pressure and speed are unstable, and the action is unreliable;
c. Increased internal and external leakage of hydraulic components;
d. Accelerate the oxidative deterioration of oil.
③ It is extremely important to control the leakage of hydraulic system, because leakage and suction are common faults of hydraulic system. To control leakage, the first is to improve the processing accuracy of hydraulic components, the assembly quality of components and the installation quality of the piping system; the second is to improve the quality of the seals, pay attention to the installation and use of seals and their regular replacement; the last is to strengthen daily maintenance.
④ Prevent the vibration and noise of the hydraulic system. Vibration affects the performance of hydraulic components. It loosens screws and pipe joints, causing oil leakage and even rupture of oil pipes. Once the screw breaks and other failures occur, it will cause personal and equipment accidents. Therefore, it is necessary to prevent and eliminate vibration.
⑤ Strictly implement the daily inspection and regular inspection system. Spot inspection and regular inspection are one of the foundations of equipment maintenance. There are three major difficulties in hydraulic system failures: concealment, variability and difficult to judge. Therefore, spot inspections and regular inspections are carried out on the working status of the hydraulic system, and the possible malfunctions are recorded on the daily inspection maintenance card, and the malfunctions are eliminated in the budding state, reducing the occurrence of major accidents, and providing the first priority for equipment maintenance. Hand information.
⑥ Strictly implement the regular tightening, cleaning, filtering and replacement system. In the working process of hydraulic equipment, due to shock, vibration, wear, pollution and other factors, the pipe fittings are loosened, and the metal parts and seals are worn out. Therefore, the hydraulic parts and fuel tanks must be cleaned and repaired regularly. Postponement of replacement system.
⑦ Strictly implement process discipline. In a modern mechanical processing factory with a high degree of automation and mass production, the degree of specialized production of mechanical equipment is high, and the production rhythm is very strong. It is necessary to adjust the pressure and flow of the hydraulic system according to the processing requirements and production rhythm to prevent operation In order to speed up the beat, the hydraulic system's working pressure is increased and the movement speed is accelerated. Unreasonable adjustment will not only increase power consumption and oil temperature, but also cause failure of the hydraulic system.
⑧ Establish technical files of hydraulic equipment. Equipment technical files are the technical basis of "good management, good use, and repair" equipment, and the original basis for spare parts management, equipment maintenance and technical transformation. Therefore, the careful establishment of hydraulic equipment technical files will help analyze and judge the causes of hydraulic failures, and provide a basis for taking decisive measures to eliminate the failures.
⑨ A test site for repairing hydraulic components should be established. In order to ensure that the repaired hydraulic components meet the original technical performance requirements, or to conduct a quality spot check on the stock hydraulic components, or to conduct a performance test on the imported hydraulic components before the surveying and trial production, etc., a repair test site is required.
Enhancing equipment maintenance is a very important link to ensure the normal operation of equipment. At present, hydraulic equipment often has four problems: one is "mental illness", which means that the hydraulic system works well and sometimes badly, and the actuator is sometimes not working; the other is "sweat", which means that the system leaks seriously; the third is "jitter disease", Refers to the movement, vibration or crawling of the actuator; the fourth is "high fever", which refers to the excessive temperature rise of the working fluid of the hydraulic system. If the above four diseases are analyzed and diagnosed, the root causes are found, the hydraulic equipment is scientifically managed, and preventive measures are put forward for common failures, the failures of the hydraulic system can be reduced or avoided.