1, to reduce the effects of mechanical impurities continue impurities generally refers to dust, soil, and other non-metallic material and construction machinery in the process of self-liter metal shavings, wear products such. Once these impurities into the mechanical internal mechanical mating surfaces between the harm is great, not only the relative motion block, accelerated wear of parts and scrapes with the surface, the destruction of the lubricant film, so the part temperature rose high, lubricant deterioration. According to the determination of mechanical impurities in the lubricating oil increased to 0.15%, the first engine piston ring wear than normal value is 2.5 times larger, its life will be reduced by 80% to 90% of the crusher; the rolling bearings enter impurities particles. Therefore, for the mechanical work in the harsh environment, construction machinery conditions are complicated places, one should use high-quality, ancillary parts and lubricants, greases, and plugged the source of harmful impurities; Second, it is necessary to do the work site protection work , to ensure that the appropriate institutions can work to prevent the kinds of impurities into the internal machinery. Mechanical failure, repair as far as possible to regular repair places coal mill. Site repairs, to do well as protective measures to prevent contaminated by dust and other impurities before entering the machinery, on-site repair and replace the parts. 2, reducing the various corrosive effect of the metal surface with the surrounding medium damaged by chemical or electrochemical reaction and the phenomenon known as the corrosion Raymond machine. Such a corrosive effect will not only affect the normal working of the equipment of the mechanical appearance and corrosion to the mechanical parts inside. Rain in the chemicals in the air by the mechanical parts of the external channel crevice into the the mechanical internal corrosion inside the mechanical parts, to accelerate the mechanical wear, increase the mechanical failure cement production equipment. Because of this corrosive effect is sometimes invisible. Touched, easily overlooked, thus greater danger composite crusher. In use, management and operating personnel according to the local weather conditions, air pollution, to take effective measures to reduce the effective measures to reduce the impact of the chemical corrosion of mechanical, the focus is to prevent the intrusion of rain and air in the chemical composition on the mechanical . 3, to reduce the influence of temperature in the work, the temperature of the individual components has a respective normal range double roll crusher. Usually the cooling water temperature of 80 to 90 ° C, the temperature of the hydraulic oil of the hydraulic drive system of 30 to 60 ° C, less than or exceeds this range, it will accelerate the wear of the parts, to cause the lubricating oil deterioration, resulting in changes in the material properties, and so on. The test showed that various construction machinery, the main drive gear and the bearing in the -5 ° C lubricating oil operation than in the 3 ° C of lubricating oil in operation, wear should be increased to 10 to 12 times the crusher. But when the temperature is too high, they will accelerate the lubricant deterioration, such as checked 55 ~ 60 ℃ oil temperature, oil temperature is increased by 5 ℃, the oxidation rate of the oil will be doubled. To this end, the construction machinery in the course of a To prevent low temperature overload, to ensure the normal operation of the low-speed pre-heating stage machinery to reach the specified temperature and then traveling or working, not because it was not a problem while ignoring The important do; Second, it is necessary to prevent the machinery operating at high temperatures, mechanical running process should always check the values ??on the various thermometers and found the problem immediately stop inspection, found fault even if the exclusion of roller breaking. Can not find a reason, absolutely can not but treated and still make the mechanical work sick. In the usual work, compound crusher to be careful to check the working status of the cooling system. Water-cooled machine daily work must be checked with the addition of cooling water; air-cooled machines, but also regularly clean up the dust on the air-cooled system, to ensure the smooth flow of cooling duct. For more information: company website http://www.yhzg.org http://www.mfsbw.net