In the construction of excavators, safety is always the first priority. What are the safety requirements and precautions for driving an excavator? How to drive a mini excavator safely in different terrains?
As the main customer base of excavators is located in rural and urban areas of the country, excavators are efficient and mobile. Most of them have their own trailers located among the mountains and jungles.
First of all, the trailer must not be too high or easily wiped.
Second, the brakes must be air brakes, water spray brakes, long downhill braking, the brakes tend to be soft, even the car hit the cliff accident, most of them are caused by oil brakes.
Third, it is recommended to stop the air brake when parking. If there is no air brake, the wheels must be placed on the stone when the excavator moves up and down. Simply applying the brakes is not enough. The excavator has a bad experience with the trailer skidding.
In addition to engine carbon buildup, excavators teach you three construction tools, such as excavators and forklifts for harsh conditions. Machines are often overloaded for long periods of time. In addition, construction sites often use poor quality diesel fuel, vehicle engines are prone to carbon build-up.
Carbon buildup is a dense carbon oil compound. As diesel fuel and oil are not completely burned into the cylinder, oil accumulates in the engine cylinder head, cylinder liner, piston, valve, combustion chamber, injector and other surface areas with poor thermal conductivity. Long-term accumulation will cause local overheating of components. Severe nozzle, valve ablation, piston ring blockage and cylinder pulling can cause serious failure. In addition, if carbon accumulates on the surface of the combustion chamber, it will also cause increased compression ratio, pre-ignition, detonation, etc., which will seriously affect the power and fuel consumption of the engine. Therefore, excavators must be regularly checked for carbon deposits and remove them for maintenance.
Method 1: Mechanical grinding to deposit carbon is a simple and direct method of mechanical polishing with tools. You can use wire brush, scraper, bamboo or abrasive cloth to wipe the carbon deposits. Specially shaped parts can use special tools. Carbon buildup For example, you can use a fine wire brush to clean carbon buildup around the nozzles, where the pressure chamber is made of special needles. Valve guide and valve seat carbon can be removed with a cylindrical steel wire brush.
Method 2: The principle of sandblasting is similar to sandblasting, but the sandblasting particles are not sand. Sandblasting of sand cores uses high-speed airflow to blast walnut sand onto the surface of the part to remove carbon and oil deposits. This method requires special equipment and is difficult to be widely used.
