Explain the maintenance skills of crusher in low temperature environment

The service life of mechanical equipment is not only related to its own components, but also affected by external factors, such as material hardness, manual operation, temperature and other factors. The daily maintenance of mechanical equipment also affects the service life of the equipment. In this article, Xiangjian High Manganese Steel takes the crusher (stone crusher) as an example according to the feedback information of customers, and introduces the precautions for the daily use of mechanical equipment in low temperature.

In the low temperature environment in winter, diesel oil and water are relatively easy to freeze, and it is more difficult to start the machine. At the same time, the wear of parts and the fuel consumption increase significantly. Therefore, corresponding maintenance measures must be taken before winter, and the crusher must be thoroughly cleaned. Inspection and maintenance to ensure the safety of construction machinery for the winter. The precautions for maintaining the crusher (stone crusher) in winter are as follows:

1. Cleaning of the crusher

Cleaning the exterior of the diesel engine, chassis and working devices of construction machinery can play a role in descaling and decontamination. During the cleaning process, damage to various devices, components and oil leakage can also be found, and preliminary work can be done for the next maintenance. It is strictly forbidden to use a high-pressure and high-temperature water gun to wash the parts with high waterproof requirements, especially the electrical parts, so as to avoid damage.

2. Selection and replacement of oil

1. Selection of fuel oil

Diesel is easy to form wax at low temperature, the viscosity increases, the fluidity becomes poor, and the atomization is poor, which deteriorates the combustion process and reduces the power and economy of the diesel engine. In order to make the diesel engine work softly and reduce fuel consumption, diesel with lower freezing point should be selected. The general selection principle is: the freezing point of diesel oil is about 5°C lower than the ambient mixing degree. The diesel grades available in winter are: -10#, -20#, -35#, etc.

During maintenance, the fuel system should be cleaned. Thoroughly clean all filters, replace the fuel filter element, discharge the sewage from the oil-water separator and clean it. Colleagues check the working condition of the oil pump to eliminate hidden troubles.

2. Replacement of diesel engine oil

Diesel engines should use low-temperature oil with lower viscosity. Try to use high-performance engine oil, which is not only not easy to oxidize at high temperature, but also will not leave deposits in the precision parts of the diesel engine, which can greatly extend the life of the diesel engine. Multi-grade oil can work in a wide temperature range, generally, multi-grade oil with viscosity grade of SAE5W-40 or SAE10W-40 can be selected. When changing the oil, the oil filter should be replaced or cleaned.

3. Replace lubricating oil and grease

During seasonal maintenance, replace the gear oil in the transmission, transfer case, differential and steering gear with gear oil for winter use, and pay attention to cleaning when changing the oil.

3. Maintenance of parts

1. Maintenance of the diesel engine cooling system Check the working state of the thermostat to prevent the water temperature of the diesel engine from being too low or too high. Remove limescale from the water jacket. It is necessary to choose a long-term antifreeze that is about 10°C lower than the lowest temperature in the area where the construction machinery is used, and has antifreeze in winter and anti-boiling, anti-corrosion and anti-scaling in summer. Once the water tank is found to have silt deposits, remove it immediately.

2. Maintenance of electrical equipment Check the motor wiring of the battery. Check and adjust the electrolyte density. Maintain the starter motor and increase the alternator charging voltage. In winter, the battery should be charged frequently and the preheating device should be maintained.

3. Maintenance of the brake system Pay attention to whether the brake fluid is sufficient and whether the quality is deteriorated. Check whether the oil-water separator and the drain switch are working properly. Check whether the brake is weakened, deviate, the pedaling force of the brake pedal is insufficient and the brake does not return, and adjust it in time