The general rule for new gantry cranes has a running-in period of about 60 hours, which is set by the manufacturing plant according to the technical characteristics of the crane at the initial stage of use. As a result, the machine was overloaded for a long time during the running-in period, leading to frequent occurrence of early-stage problems of the machine, which not only affected the normal operation of the machine, shortened the service life of the machine, but also affected the progress of the project due to the damage of the machine. When buying a gantry crane, everyone knows that no matter what machine it has, it has a running-in period. During the running-in period, special attention should be paid to the use of the machine. Because improper use during the running-in period can cause damage. Let's take a look at what needs attention. The general rule for new gantry cranes has a running-in period of about 60 hours, which is set by the manufacturing plant according to the technical characteristics of the crane at the initial stage of use. Anyway, the manufacturer has a warranty period. If the machine is broken, the manufacturer will take care of it. Therefore, the machine will be overloaded for a long time during the running-in period, resulting in frequent early-stage problems of the machine. This not only affects the normal use of the machine, but also shortens the service life of the machine. And because the machine was damaged, the progress of the project was affected. Therefore, the operation and maintenance of the running-in period of the construction hoist
should be paid full attention. Precautions during the running-in period of the construction hoist: 1. There are many operating errors; because the structure and function of the construction hoist are not well understood, the simple operation errors may cause problems and even cause mechanical accidents. 2. Poor smoothness; because the cooperation gap of newly installed parts is small, and because of installation and other reasons, it is difficult to ensure the uniformity of the cooperation gap. The smooth oil is not easy to form a uniform oil film on the surface of the conflict to prevent wear. Thereby reducing the efficiency of smoothing and forming abnormal wear of the machine parts in the early stage. In severe cases, the appearance of scuffing or occlusion of precise cooperation will form, leading to the occurrence of problems. 3. Loosening occurs; the newly processed and installed parts have errors in geometric shapes and cooperative dimensions. In the early stage of use, they are affected by alternating loads such as impacts and oscillations, as well as heat, deformation and other factors, as well as excessive wear. For other reasons, simply loosen the originally fastened parts. 4. Leakage occurs; due to the loosening, vibration of the machine and the influence of the machine's heat, the sealing surface of the machine and the pipe joints will show leakage; some shortcomings such as casting and processing are difficult to find during installation and commissioning. However, due to the vibration and impact during the operation, this shortcoming was exposed and manifested as oil leakage. Therefore, the leakage phenomenon is simply present during the running-in period. Fifth, the wear rate is fast; the crane has a rough appearance due to the influence of the processing, installation and adjustment of new machine parts, the contact area of u200bu200bthe cooperation surface is small, and the pressure on the surface is uneven. During the operation of the machine, the concave and convex parts of the parts are interlocked and conflicted with each other, and the metal scraps that are ground down are used as abrasives to continue to participate in the conflict, which accelerates the wear of the cooperative appearance of the parts. Therefore, during the running-in period, the wear of the parts is simply formed and the wear rate is fast. At this time, if overloading is performed, it may cause damage to parts and early failures. Pay attention to the above phenomena during the running-in period, the life of the machine will increase.
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