1. Oil product selection
Selection of engine oil: If the engine lubricating oil is not replaced for a long time, it will accumulate a lot of carbon deposits and impurities, which will increase the viscosity of the oil, which will cause insufficient heat dissipation or insufficient lubrication during use during the warm-up period. , Connecting rod, oil pump and other components cause direct damage or hidden damage. When lubricating oil is used in winter, oil 名媛直播 with low viscosity should be selected, such as 5W, 10W, 15W, four season oil and other labeled oil 名媛直播.
Hydraulic oil maintenance and maintenance: When the temperature in winter is low, the viscosity of the hydraulic oil is high, when it is not preheated or the oil temperature is not high, it is easy to have difficulty in boom boom, no combined action, and the warm-up time is too long. It should be run at idle speed for a period of time before entering the high-speed state to prevent damage to the oil pump, pipelines and other components caused by excessive viscosity. If the temperature is low, it can be replaced with 32 # hydraulic oil.
Gear oil replacement and maintenance: The maintenance period of crane gear oil is about one year. When the gear oil is worn for a long time through the gear, affected by factors such as reduced temperature or oil deterioration, when the gear is running at high or low speed, it cannot produce a full-scale oil film on the gear surface, resulting in abnormal wear or rust on the gear contact surface. In winter, parts such as axles and speed reducers should be cleaned and replaced with new oil.
2. Electrical maintenance
Check whether the exposed lines are aging or loose. Before the winter comes, you should fully check the repairs.
The more common problems are: the height limiter switch is often exposed, the switch is connected to the position of the pull rope, it is easy to form dripping, and the return of the switch is blocked due to rapid icing in the cold, the sight is not good during night operation, and the main hook or auxiliary hook is not directly Protection, easy to cause security accidents or losses.
When using it in the morning, check the long-angle sensor cable to remove ice cubes to prevent the cable from freezing during operation and the cable sheath from rupturing, causing leakage and stringing.
Check the battery to see if the vent hole is blocked. If necessary, cover and protect it to avoid direct exposure.
3. Check the gas path
Check the gas valve of the air reservoir to see if the exhaust gas is normal when draining the water. Check it before leaving work every day to prevent the valve from freezing or opening up at night to cause air leakage or blockage of the air pipe and valve body.
4. Wheel maintenance
The horizontal deflection value of the crane wheel is an important technical parameter of the crane. Excessive deflection value will cause biting of the rail, increase the running resistance, generate vibration and noise, increase the wear of the rail and wheels, and greatly reduce the service life of the crane wheel The technical conditions for crane manufacturing shall specify the allowable values for the horizontal deflection of the wheels.
① If the wheel is cracked, it should be scrapped;
②The wheel tread ellipticity of 1mm should be scrapped;
③The bending deformation of the rim thickness should be scrapped if it reaches 20% of the original thickness.
