Views:3 Author:Site Editor Publish Time: 2019-07-05 Origin:Site
Gantry crane structure
The new gantry crane generally has a running-in period of about 60 hours, which is stipulated by the manufacturing plant according to the technical characteristics of the initial use of the crane. Anyway, the manufacturer has a repair period, the machine is broken and the manufacturer is responsible for maintenance, so the machine is overloaded for a long time during the running-in period, resulting in frequent machine failures, which not only affects the normal use of the machine, but also shortens the service life of the machine. And because the machine is damaged, it affects the progress of the project. Therefore, the use and maintenance of the gantry crane's running-in period should be given full attention. Below the crane, driving, and crane manufacturers to introduce to you the matters needing attention in the crane running-in period.
1. Many operational errors Due to insufficient understanding of the structure and performance of the gantry crane, it is easy to cause malfunction due to operational errors and even cause mechanical accidents.
2, poor lubrication Because the newly assembled parts have a small fit clearance, and due to assembly and other reasons, it is difficult to ensure the uniformity of the matching gap, the lubricating oil is not easy to form a uniform oil film on the friction surface to prevent wear. Thereby reducing the lubrication efficiency, resulting in abnormal early wear of the machine. In severe cases, the friction surface of the precision fit may be scratched or bitten, resulting in malfunction.
3. Parts that have loosened new processing and assembly have deviations in geometry and fit size. In the initial stage of use, they are affected by alternating loads such as shock and vibration, as well as factors such as heat and deformation, and excessive wear and tear. The reason is that it is easy to loosen the originally fastened parts.
4. Leakage occurs due to the looseness of the machine parts, vibration and the influence of heat on the machine, leakage will occur on the sealing surface of the machine and the pipe joints; some defects such as casting and machining are difficult to find during assembly and debugging, but Due to the vibration and impact during the operation, the defect is exposed and appears to be oil leakage. Therefore, the running-in period is prone to leakage.
5. Fast wear speed Due to the influence of factors such as 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 concave and convex portions of the surface of the part are engaged with each other. Therefore, it is easy to cause wear and tear of parts during the running-in period, and the wear speed is fast. At this time, if it is overloaded, it may cause damage to parts and cause early failure.