How to maintain a combined harvester
The maintenance of the combine harvester is limited by the time, equipment and other conditions, and often requires maintenance personnel to work with the most simple and convenient means. Therefore, attention should be paid during maintenance:
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1. Advanced dual vacuum milking system(optional equipment) imitation calf feeding low vacuum(42-45Kpa) cow nipple sucking massage to make cows in the best condition to complete the entire milking process; squeezed milk is specifically high vacuum(60Kpa) timely and quickly pumped into milk pipeline, effectively ensure the stability of the milking system pressure.
2. Effective control of mastitis in cows before milking pulsation than technology meet physiological characteristics of pulsation than the technology front, the front breast area ratio of small pulsation ratio breast after large(generally breast area after area than in the previous 15% more milk); breast area while completing the four milking, milking effectively avoid the occurrence of air, reducing the incidence of mastitis.
3. Prevent overcrowding and premature removal from the design collection cup milk tubes are used to seat all the transparent design, so it can be visually determine whether there is over-milking premature phenomenon and the phenomenon of de-cup;
4. Unique automatic off cup system(optional equipment) set milk Block built vacuum shut-off valve, auto-off cup without vacuum residue will not produce cow nipples pulling force, but also off the cup action is very gentle,, collection of milk will not fall to the ground seat.
5. Advanced air cleaning mixed feeding device that can impact the entire column to form the pipeline flow scrub the entire pipeline, effectively improve the quality of the milk.
6. Hassle U-tube design U-shaped connecting pipe so that the whole milk collection device cleaning without leaving clean corners, to ensure the quality of milk.
7. Pasture management software(optional configuration) automatically precision measuring devices, computers permanent data storage.
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(1) The riveting parts in the harvester, such as a moving knife assembly, are generally made by cold extrusion and are not heated when riveted. If heated, the material strength is reduced. After riveting, the forming punch is used to strengthen the blade and the knife bar.
(2) Vulnerable parts, especially pins, tabs, sleeves, and horns, cannot be replaced with butter and repairs during maintenance. For example, parts that wear out to the limit for a long time will cause a decrease in other mechanical life. short.
(3) Axle type repair without balancing machine When repairing various shaft types to be balanced, a thrust bearing can be mounted on one end of the shaft and clamped on the three jaws of the lathe, and the other end can be used to withstand the top. If the lathe is short, it can be used. The center frame clamps the bearing mounted on the other end and corrects the balance. In the case of weights, tighten them with screws. Try not to use counterweights by electric welding.
(4) Due to the large number of types of materials in maintenance, it is not easy to purchase, and can be used for processing old shafts. At present, most shafts in China are based on 45# carbon steel. If quenching and tempering are required, oxygen may be used under poor conditions. The earth furnace heats the required parts into red and black water and put it in salt water, depending on the requirements.
(5) It is very difficult to pull the oil trough in the sleeve hole because of refueling in certain parts of the harvester when processing sets of parts. Wherever it is difficult to add oil, butter and heavy oil can be used, except for nylon sleeves. Where nylon sleeves are used, it is best not to replace them with cast iron, copper or aluminum, because nylon sleeves do not deform under certain impact.
(6) Keys and keyways on pulleys and shafts should be repaired to ensure that dimensions do not change ahead of time, and the size of the keys cannot be increased. Otherwise, the strength of the shaft will be affected. The keyways on the shaft can be welded in the opposite direction of the old keys by using a welding filler. To mill a keyway, the keyway on the pulley can be inlayed (transition fit) method. After inserting, use the countersunk screw to tap the key on the sleeve joint.
(7) Maintenance of the hydraulic part of the harvester Remove the distributor and the flow reducing valve, etc., and press each pipe with the air pump. The hydraulic oil should be filtered and vented when it is re-installed. The assembly hydraulic repair is mainly the seal. The seal is best removed and replaced. 
