Construction machinery will also "heatstroke", I am afraid that many people will not believe it, but this is neither unscrupulous talk nor grandstanding, but an iron fact. People are afraid of heat, and machines are also afraid of heat. Old-fashioned imported or domestic hydraulic excavators are particularly sensitive to temperature. High temperature often makes them immobile when they should be moved. It is better to cool down for a while, but the efficiency is great. reduce. This is the machine "heatstroke". What should I do if I encounter liquid digging "heatstroke"? Let me talk about some countermeasures.

　　(1) High temperature phenomenon: Most users reported that the hydraulic excavator started working at a normal force and speed before "heatstroke", but after one or two hours of work, the machinery slowed down and the excavation was boring. Sometimes the engine still emits smoke, and it will turn off after it is dried. It needs to stop and cool down before continuing to work. The work efficiency is greatly reduced.

　　(2) Reasons for high temperature: ① Because hydraulic excavators are machines with greater hydraulic system work intensity, they need to always maintain continuous work under high pressure. If the cooling and heat dissipation strength is not enough, the machine will become hot due to continuous temperature rise. ②The internal leakage caused by mechanical aging and wear of hydraulic components gradually increases. The hydraulic oil generates temperature due to internal leakage under high pressure, and the excessive internal leakage increases the load of the heat dissipation system and heats up. ③As the temperature rises, the hydraulic oil gradually becomes thinner as the temperature rises; the viscosity of the hydraulic oil is reduced, so that the internal leakage of each hydraulic component gradually increases and the working pressure is reduced, resulting in weak work. ④Due to the increase in the temperature of the hydraulic components, the internal leakage increases, and the function of the hydraulic pump adjustment system gradually decreases, resulting in a decrease in the variable function of the pump, resulting in an increase in the engine load and failure to work or stall.

　　(3) Troubleshooting: According to years of maintenance experience of hydraulic excavators, the above phenomena can be dealt with as follows.

　　①Forced cooling: Someone simply installs a blower on the machine. The high temperature is slightly relieved, but it is still not ideal and looks unsightly.

　　② Eliminate internal leakage: test the old mechanical hydraulic components on the test bench. If the working pressure is insufficient, the power is not enough, the variable is unstable or invariable, and the hydraulic components with serious internal leakage should be disassembled and inspected to check whether the wear degree of the hydraulic components reaches the limit , And then replace the components according to the specific situation to relieve and eliminate internal leakage. For the parts that are not easy to replace, consider the replacement or modification of the main body parts.

　　③Improve the hydraulic heat dissipation, and increase the heat dissipation load due to the increase in hydraulic internal leakage. Enhancing the heat dissipation of the heat dissipation system is also a way to reduce the temperature of the hydraulic oil.

　　④ Choose high-quality hydraulic oil to reduce temperature rise, lower oil viscosity and other functions.

　　⑤ Refit imported machines: We have refitted various imported hydraulic excavators over the years, and the results have been obvious. Selection of good domestic integral parts for replacement not only reduces the purchase cost of imported components, but also has stable and reliable quality. At present, it has become the main business of our company.

　　The phenomenon of mechanical "heatstroke" is very common. The high temperature has arrived. The bosses of hydraulic machinery, in order to ensure the smooth working of your machinery, please be prepared to solve the "heatstroke" mechanical care in the summer high temperature season.