After the cantilever crane is installed, there will be a run-in period. During the run-in period, attention should be paid to maintenance and cannot be overloaded. The editor will explain the common problems of the cantilever crane during the initial run-in period.
Due to the influence of factors such as the processing, assembly and adjustment of new machine parts, the friction surface is rough, the contact area of the mating surface is small, and the surface pressure is uneven. During the operation of the machine, the uneven parts on the surface of the parts fit and rub against each other, and the metal scraps that fall off are used as abrasives to continue to participate in the friction, which accelerates the wear of the mating surface of the parts. Therefore, the parts (especially the mating surfaces) are easily worn during the running-in period, and the wear rate is fast. At this time, if overloading is performed, it may cause damage to parts and cause early failure.
Newly processed and assembled parts and components have deviations in geometric shape and matching dimensions. In the early stage of use, due to the impact of alternating loads such as shock and vibration, as well as the influence of factors such as heat and deformation, and excessive wear and other reasons, they are easy to cause The originally fastened parts are loose.
As the fitting clearance of newly assembled parts is small, and due to assembly and other reasons, it is difficult to ensure the uniformity of the fitting clearance, and it is difficult for lubricating oil to form a uniform oil film on the friction surface to prevent wear. Thereby reducing the lubrication efficiency, causing the early abnormal wear of the machine parts. In severe cases, it will cause scratches or seizures on the friction surface of the precision fit, leading to failures.
Due to the loosening, vibration and heat of the machine, there will be leakage in the sealing surface of the machine and pipe joints; some defects such as casting and processing are difficult to find during assembly and debugging, but due to vibration during operation , Impact, this defect is exposed, manifested as leakage (seepage) of oil (water). Therefore, leakage is prone to occur during the running-in period.
Due to insufficient understanding of the structure and performance of the machine (especially for new operators), it is easy to cause malfunctions due to operating errors and even cause mechanical accidents.
The cantilever crane should properly arrange the workload during the running-in period, and wait until the running-in period to fully work normally.
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