What should I pay attention to when using construction machinery in winter?

Construction machinery is an indispensable type of machinery and equipment in the process of continuous development of modern cities. With the participation of construction machinery and equipment, construction work time is continuously reduced, work costs are continuously reduced, but construction machinery is used. In the process, it is also necessary to take care of it, especially what should be paid attention to when using construction machinery in low temperature environment?

The reason why the use of construction machinery in low temperature environment requires attention is that it is proved that there are many failures in the process of using construction machinery in low temperature environment. In order to ensure the service life and performance of the machine, it is necessary to use construction machinery in winter. The precautions are:

1. Precautions when starting at low temperature:

The minimum starting speed at which the engine can be started at a certain temperature is usually used to indicate the starting performance at that temperature, and the low temperature starting performance is indicated by the lowest temperature at which the engine can be started. Starting performance is primarily related to engine type, combustion chamber design, and process level. During use, the low-temperature startability of the engine is mainly affected by the viscosity of the engine oil, the evaporability of gasoline or diesel, the low-temperature fluidity of the diesel oil, and the working capacity of the battery. If the engine crankshaft resistance torque and the starting speed are mainly affected by the viscosity of the lubricating oil under low temperature conditions. As the temperature decreases, the internal friction of the oil increases, and the engine resistance torque increases, increasing the power required to start the engine.

2 , the impact of fuel on engine starting performance:

At low temperatures, the fuel also has a great influence on the starting performance of the engine, mainly in its evaporability. As the temperature decreases, the viscosity and relative density of the gasoline increase. Under low temperature conditions, the fluidity of the diesel decreases, and the viscosity decreases. The increase causes poor diesel atomization and deteriorates the combustion process. After the temperature is further lowered, the fluidity of the fuel is gradually lost due to the precipitation of the waxy precipitate of the fuel. If the diesel contains moisture, it may cause freezing in the supply system in winter and it will not work. Therefore, the diesel must be precipitated and filtered before use.

3. After entering the fall, the battery and starter should be maintained and maintained:

Be sure to pay attention when selecting the appropriate electrolyte density, because the electrolyte density has an important impact on the operation of the battery. Strengthening the insulation work of the winter battery or using a large-capacity battery in winter is also a measure to improve the engine starting performance.

4 , pay attention to the low temperature wear of construction machinery:

During the engine's service life, 50 % of the cylinder wear occurs during the start-up process, while the low-temperature start has a greater impact on the engine wear. Also, when the engine is cold-started, the main cause of the cylinder wall wear is: during the start-up process, The cylinder wall lubrication conditions are poor; at cold start, most of the fuel enters the cylinder in a liquid state, flushing the oil film on the cylinder wall.

In short, we must pay attention to the above factors in the process of using construction machinery in winter, in order to ensure the stability of the used construction machinery products and the long service life.

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