Pay attention to the maintenance work during the running in period of the new gantry crane

Pay attention to the maintenance work during the running in period of the new gantry crane.
The new gantry crane generally has a running in period of about 60 hours, which is stipulated by the manufacturing factory according to the technical characteristics of the crane in the early stage of use. Anyway, the manufacturer has a warranty period, and the machine is repaired by the manufacturer if it breaks down. Therefore, the machine is overloaded for a long time during the running in period, resulting in frequent early failures of the machine, which not only affects the normal use of the machine and shortens the service life of the machine, but also affects the project progress due to machine damage.
Therefore, full attention should be paid to the use and maintenance of gantry cranes during the running in period.
Gantry crane of Chongqing Sinnone Crane Technology Co., Ltd
1. Most of the operation errors are due to insufficient understanding of the structure and performance of the gantry crane (especially the new operator), which is easy to cause failures due to operation errors, and even mechanical accidents.
2. Poor lubrication due to the small fitting clearance of newly assembled parts, and due to assembly and other reasons, it is difficult to ensure the uniformity of fitting clearance, and the lubricating oil (grease) is not easy to form a uniform oil film on the friction surface to prevent wear. Thus, the lubricating efficiency is reduced and the early abnormal wear of the machine parts is caused. If it is serious, it will cause scratch or bite on the mating friction surface, resulting in failure.
3. The newly processed and assembled parts that are loosened have deviations in geometric shape and fit size. At the initial stage of use, due to the impact, vibration and other alternating loads, as well as the influence of heating, deformation and other factors, coupled with the rapid wear and other reasons, it is easy to loosen the originally fastened parts.
4. Leakage occurs. Due to the looseness of machine parts, vibration and the influence of machine heating, leakage will occur on the sealing surface and pipe joints of the machine; Some casting, processing and other defects are difficult to find during assembly and commissioning, but due to vibration and impact during operation, such defects. It is exposed, showing oil (water) leakage. Therefore, leakage is easy to occur during the running in period.
5. The wear speed is fast. Due to 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 pressure bearing condition of the surface is uneven. During the operation of the machine, the concave and convex parts on the surface of the parts are embedded and rubbed with each other, and the metal debris that has been ground down continues to participate in the friction as abrasive, which further accelerates the wear of the mating surface of the parts. Therefore, during the running in period, it is easy to cause the wear of parts (especially the mating surface), and the wear speed is fast. At this time, if overloaded operation, it may lead to damage of parts and early failure.