Combine harvesters are seasonal agricultural implements. However, when the harvest was busy, some combine harvesters were forced to stop repairing due to unexpected failures. This not only caused the harvester to lose its best working time, but also brought huge economic losses to the operator. Therefore, preventing and reducing sudden failure of the combine harvester has become a subject of great concern for the majority of the operators, and it has also become a prominent issue for further improving the economic benefits of the combine harvester.
1, the cause of sudden failure
There are two main causes of the sudden failure of the combine harvester: First, accidental failure caused by improper operation is caused by human beings, which is generally easy to avoid and prevent. The second is the sudden failure caused by the excessive wear of certain parts of the machine during long-term use. It is due to natural wear and tear. The use of active preventive measures can avoid and reduce the probability of failure.
2, sudden failure prevention measures
For the sudden failure of the combine harvester, as long as active scientific preventive measures are taken, not only can the occurrence probability be minimized, but also the failure can be eliminated in a timely manner and the good technical state can be maintained. To carry out planned and purposeful technical maintenance prior to failure is a proactive and effective preventive comprehensive measure. Technical maintenance can be divided into daily maintenance, regular maintenance and seasonal maintenance.
Daily maintenance: It is performed before and after the operation. It is easy to operate and can be completed without disassembling the main components. Work content is generally: clear the outside of the machine silt, wrapped grass, dust; check the external connection bolts are solid; diesel, lubricants, water is sufficient, whether there is water leakage, oil leakage; according to the provisions of the various parts of lubrication; check and Adjust the tightness of the transmission parts. The contents of maintenance should be carried out according to the specifications of each model.
Regular maintenance: Determine the maintenance cycle and content according to working hours. In addition to the contents of daily maintenance, the maintenance contents should also be checked, replaced, and adjusted in a timely manner in accordance with the rules for regular maintenance to eliminate hidden troubles and ensure that the machine is in good technical condition.
Seasonal maintenance: After the harvest is completed, the machine needs a technical maintenance before parking for a long time. The maintenance content is first of all to conduct a comprehensive cleaning and cleaning of the machine, leaving no grain, grass clippings, silt and other debris to achieve cleanliness and cleanliness. Followed by serious daily maintenance and regular maintenance requirements for maintenance, repair of parts with severe wear and tear, to be repaired, without "disease" parked. And do a good job of rust prevention, antifreeze, fire prevention, anti-corrosion, anti-deformation, anti-theft and other custodial work, ensure that the machine can be put into use after the end of storage.
3, the early judgment of sudden failure
Combine harvesters generally have certain symptoms before sudden failures occur. Early detection of symptoms is an important part of preventing sudden failures, and it also creates the best conditions for troubleshooting as soon as possible. Therefore, comprehensive and accurate grasp of the characteristics of various failures is an important guarantee to prevent and reduce the occurrence of sudden failures. Sudden failure generally has the following symptoms before it occurs:
Abnormal function: The technical performance of the combine harvester is abnormal and the work performance is degraded.
Appearance anomaly: Abnormal appearance of the rack or component such as deformation, damage, cracking, and loose connection.
Unusual temperature: Some parts of the harvester are overheated and even smell of smoke. Normal hand touch parts or body, the hand can not touch the temperature is not normal.
Unusual voice: The sound produced by the harvester during normal operation is uniform and regular, such as an impact, scratch, knock, or vibration.
Abnormal wear and tear: Parts fail to have a normal service life and have premature failure or failure.
Combine harvester's appearance of these symptoms is generally a precursor to failure, must pay attention to, according to these symptoms in a timely manner careful analysis, investigation, to find out the specific parts. The method is generally: First of all, the symptoms of the failure should be very clear, and then contact the harvester structure, working principle, the main components of the function, according to institutions, sub-sites for analysis, comparison, search; followed by more observation, carefully review the harvest Various abnormal phenomena and symptoms appear in the operation of the machine; the senses are again determined by the senses, and ears, noses, and hands are used to help distinguish. For a sudden failure of the combine harvester, as long as it can better grasp the method of failure analysis, familiar with the various symptoms of the failure, it can fully realize early detection, early elimination, to avoid sudden failure.
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