Milling machine maintenance knowledge

The milling machine is a kind of common road machinery, road milling machine is mainly used in highways, urban roads, airports, freight yard, stop and field of Asphalt Concrete Pavement Asphalt Pavement Renovation excavation, remove lump, oil, etc. the wave and reticulate rutting; galling and the surface layer of cement pavement dislocation milling ping.

The continued use of the milling machine in the process will inevitably be consumed and wear, prolong the service life of the machine, the correct operation and proper maintenance is necessary, so how to do better maintenance?

1. First of all, the machine must be operated by professionals, and read the operation manual carefully;

Milling machine maintenance knowledge

2, the main part of the machine due to milling, bearing, gasket, milling drum composition, the operation process due to long time and road friction, the fastest consumption is also this part, regular replacement, inspection, in order to better extend the service life of the machine;

3. The milling cutter shaft should be inspected every day. If the groove is over 25% of the diameter of the cutter shaft, it should be replaced. Generally speaking, the life of cutter shaft is half life of tungsten steel milling cutter. From the square area, its life is, milling depth of 5mm, about 350-500 square meters. But please pay attention to many factors that affect the life of the tool shaft, so check it every day;

Milling machine maintenance knowledge

4, for the sake of safety, before the maintenance, the engine spark plug should be pulled out, preferably by qualified mechanic;

5, before each operation to check the oil level, clean air filter after use;

6. Grease should be added to the bearing after 4 hours of use. When lubricating grease is used, the milling drum is rotated at the same time, and the grease is coated in the whole bearing;

7. Inspect the machine with naked eyes before each operation: are all fasteners tightened? Are there obvious wear or tear of parts? Is the fuel supply well? Check the bearing, check whether the protective cover is covered or not;

8, before each operation, check the tightness of the belt. The new belt in 4 operation hours should re adjust the degree of tightness must maintain proper belt tightness, to transfer the engine output horsepower to the cutter drum, when a tight belt will be easy to wear, but also shorten the service life of the bearings, such as broken marks, severe wear belts should be immediately replaced;

9, in general, cutter cracking is very rare, if occurred, usually have the following situations: A: cutter milling drum arranged irregularly; B: single milling is too deep; C: the removal of different types of pavement milling cutter is not suitable; D: milling surface strength is too large;

10, change the milling cutter each time, check the milling cutter shaft and bearing. If there is wear grooves on the shaft, it is necessary to replace the new ones, and the bearings should be changed at the same time.

11, milling drum if maintained properly, usually can use 3 months. In the more milling cutter or maintenance, check the central axis of milling drum whether there is cracks, shaft sleeve hole is oval, weld seam whether there is cracks, if found any damage, must replace the new drum;

12, finally, to remind attention when you want to check the milling drum at the bottom of the milling machine, the machine must be: forward overturned, never towards the tip, otherwise the oil will flow backward into the engine cylinder.

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