In addition to minimizing the impact of harmful factors, the normal working load should also be ensured when using construction machinery. Let's introduce it in detail below

 

    1. Reduce the influence of temperature

 

    At work, each < strong class="keylink" style="word-break:break-all;">Parts have their own normal temperature ranges. For example, if the temperature of the general cooling water is 80-90℃, the hydraulic pressure of transmission system hydraulic oil The temperature is 30-60℃, lower or exceeding this range will accelerate the wear of the parts, cause the deterioration of the lubricating oil, cause the change of the material properties and so on.

 

    Tests have shown that the main transmission gears of various spring machines and Bearingoperating in lubricating oil at -5°C will increase wear by 10-12 times compared to operating in lubricating oil at 3°C. But when the temperature is too high, it will accelerate the deterioration of the lubricating oil. For example, when the oil temperature exceeds 55-60°C, every 5°C increase in the oil temperature will double the oxidation rate of the oil. For this reason, during use of spring machinery, one must prevent overloading at low temperatures Run, ensure the normal operation of the low-speed pre-warming stage, make the machine reach the specified temperature before driving or working, do not ignore its important role because there are no problems at the time; second, prevent The machinery runs under high temperature, and the values on various thermometers should be checked frequently during the machinery operation. If problems are found, the machine should be shut down for inspection immediately, and faults are found Exclude in time. For those who cannot find the cause for a while, we must not leave the machine working without treatment. In normal work, pay attention to checking the working condition of the cooling system. For water-cooled machinery, it is necessary to check before daily work and add cooling water; for air-cooled machinery, dust on the air-cooled system should also be cleaned regularly to ensure that the heat dissipation air duct is unblocked.

 

2. Reduce the impact of mechanical impurities

 

    Machinery Impurities generally refer to non-metallic substances such as dust and soil and Some metal shavings, wear products, etc. produced by the spring machine itself during use. Once these impurities enter the machine and reach between the mating surfaces of the machine, the harm is great. Not only will the relative movement be blocked and the wear of the parts will be accelerated, but also the mating surfaces will be scratched, the lubricating oil film will be destroyed, and the temperature of the parts will rise. High, deterioration of lubricating oil.

 

    It is determined that when the mechanical impurities in the lubrication increase to 0.15%, motor, tooth The wear speed will be 2.5 times larger than the normal value; when the rolling shaft enters the foreign particles, its life will be reduced 80%-90%. Therefore, for spring machinery working in harsh environments and complex conditions, one Use high-quality, matched parts and lubricating oil and grease to block the source of harmful impurities; second, do a good job on site springMechanicalProtection work to ensure the normal operation of corresponding institutions and prevent all kinds of impurities from entering springMechanical inside. For machinery that has failed, try to repair it at a regular repair site. During on-site repairs, protective measures must also be taken to prevent parts from being replaced during on-site repairs >Be contaminated by impurities such as dust before entering the machine.

 

 3, reduce various corrosive effects

 

    The phenomenon that the metal surface and the surrounding medium undergo chemical or electrochemical action and suffer damage is called corrosion. This corrosive effect will not only affect springmechanical Corroded to springmechanical internal parts. For example, rainwater, chemical substances in the air, etc. enter through the external passages and gaps of mechanical parts springmechanical inside, corrosionSpringmechanical inside parts, accelerating springmachine mechanical wear, increase springmachineMechanical failure. Because this kind of corrosive effect is sometimes invisible and intangible, it is easy to be overlooked, so it is more harmful. In use, management and operating personnel should take effective measures according to the local weather conditions and air pollution at the time to reduce the impact of chemical corrosion on springmechanicalThe focus is to prevent rainwater and the chemical composition in the air from harmingspring< /strong>Mechanical intrusion.

 

    4. Ensure normal working load

 

    SpringMechanical "http://www.87608.cn" target="_blank">SpringMechanicalThe loss process has an important influence. Generally speaking, the wear of parts increases in proportion to the increase in load. When the load on the part is higher than the average design load, its wear will increase. In addition, when other conditions are the same, stable load has less wear than dynamic load, fewer failures, and lower life. Tests have shown that when the engine works under unstable load and works under stable load, the wear of its cylinder will increase by 2 times. The engine working under normal load has a lower failure rate and a prolonged life. On the contrary, the overloaded engine will have a significant increase in the incidence of failures, and the service life will be less than the design index. SpringMechanicalThe amount of wear is greater than that of continuous and stable working machinery .