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Construction machinery will be "heat stroke" treatment measures
Construction machinery will also "sunstroke", I am afraid many people do not believe it, but it is neither taboo, nor is it sensationalism, but the fact that iron. Fear of heat, the machine is also afraid of heat, especially age-old, old-fashioned imported or domestic hydraulic excavator, due to the temperature is particularly sensitive to high temperatures often make them should not move, cool for a while and better, but efficiency reduce. This is the machine "heat stroke" friends. Encountering liquid dug "heat stroke" how to do? Now I talk about a few countermeasures. (A) high temperature phenomenon: Most users reflect: hydraulic excavator "heatstroke" before the start of efforts, the speed is normal, but after an hour or two of work, machinery slow down, digging boring. Sometimes the engine smoke, and then it is necessary to turn off the fire, you need to stop to cold and cold and then continue to work, work efficiency is greatly reduced. (B) causes of high temperature: ①hydraulic excavator hydraulic system is due to the strength of a larger machine, it needs to always maintain the continuity of work under high pressure, cooling cooling strength is not enough, the mechanical temperature will continue because of the high temperature. ② due to mechanical aging, hydraulic components generated by the gradual increase in internal leakage. Hydraulic oil in the high pressure due to the internal vent to produce temperature, but also because of excessive internal cooling to increase the cooling system load and thus warming. (3) As the temperature rises, the hydraulic oil gradually becomes thinner with the increase of the temperature; reduces the viscosity of the hydraulic oil, so that the hydraulic components gradually increase the internal discharge and reduce the working pressure, resulting in weak work. ④ Due to increased wear and tear of the hydraulic components, the internal pressure of the hydraulic pump will gradually decrease, which will lead to the decrease of the pump variable, which will lead to the increase of the engine load and the failure of normal operation or stop of the engine. (C) Troubleshooting: According to many years of hydraulic excavator maintenance experience, the above phenomenon can be done as follows. ①Forced cooling: Someone simply put a blower on the machine, a slight relief of high temperature, but still not good enough, it does not look good. ② eliminate the internal leakage: the old mechanical hydraulic components test bench test, if the work pressure is not enough, the power is not enough, the variable is unstable or invariable, serious internal leakage should be disassembled hydraulic components, hydraulic components to check whether the degree of wear and tear reached the limit , And then replace the components according to the specific circumstances to ease and eliminate the internal leakage. Not easy to replace the couple, it is necessary to consider the replacement of the main components or modified. ③ to improve hydraulic cooling, due to increased hydraulic output, increase the cooling load. Enhance the heat dissipation system cooling is also a way to reduce the temperature of hydraulic oil. ④ Select high quality hydraulic oil to reduce temperature rise, reduce oil viscosity and other functions. ⑤ modified for imported machinery: We over the years on a variety of imported hydraulic excavator modification, received significant results. Selection of good domestic overall replacement parts, not only reduces the procurement costs of imported components, but also the quality of stability and reliability. At present, as the main business of our company. Mechanical "heat stroke" phenomenon is very common, hot weather has arrived, the use of hydraulic machinery employers, in order to ensure that your machinery can work smoothly, please do a good job in the summer season to deal with "heat stroke" mechanical preparation of the psychological care.