On April 23rd, the aluminum repair track for the 1# multi-function crown block of the Second Aluminum Plant of the Yidian Group was successfully tested. At this point, it indicates that the Group has already overcome the core technology of overhauling the multi-function crane units and fully realizes independent maintenance. With only this one item, it will save more than 20,000 yuan in maintenance funds. If this overhaul technology is used to the group's affiliated companies, 20 Multiple multi-function unit cranes can save over RMB 1 million in maintenance funds for the group each year.
During the spring safety inspection, the Yidian Group found that the group's second aluminum plant's No.1 multi-function unit had a block, crack, and layer failure in the aluminum car track. In the past, this type of inspection must hire a professional maintenance team of the manufacturer. Once on the yuan. After careful consideration, the group decided to set up a technical research team to independently overhaul.
According to the use of aluminum vehicles, the aluminum output is often performed at the aluminum end of the electrolytic cell. It is also mainly operated by the load. The front and side load capacities of the rails are also large. At the other end, the operation is generally not performed, and the operation is also performed during the operation. The scattered objects such as aluminum and electrolyte blocks have less bearing capacity and the tracks are basically intact.
After thorough analysis of the failure, the research team developed two types of maintenance solutions: First, the entire track was replaced. It is necessary to remove and install a lot of cables to lift the aluminum car from the 32T crane, lift the new 25.5m track to its original position, mark it again after recalibration, and then hang it down to use the magnetic drill. Holes, then lifted to the original location of the place with 186 bolts tightening, and then lifting the aluminum car up, after the installation of cable test run. The lifting process of this kind of scheme is complex, with many links, long replacement track, labor intensity of workers, construction time of 20 days, and large maintenance material consumption. The second solution is to exchange the two ends of the original orbit. The process is the same as renewing, except that the orbital pressure plate is drilled once again on the original foundation, and the strength will obviously drop. However, the material cost is saved by a 25.5 meter, which is worth about 35,000, but the safety performance cannot be guaranteed.
Through the analysis and comparison of the above two schemes, the inspection and control team quickly developed a feasible third type of overhauling scheme: partial replacement of the 6.6m track at the aluminum end. This kind of scheme does not require dismantling and installing cables, nor does it need to lift the aluminum crane from the crane. Gas cutting is required to cut off the 6.6m track of the aluminum end, and the cut off track is hoisted with the chain hoist, and the bolts and drill holes are loosened. Forty-two, because of the short track, convenient construction, construction links have also been reduced, the labor intensity will be reduced accordingly, but also saves 18.9 meters of material track, the value of about 26,000 yuan, the maintenance plan time is about 10 days.
Under the meticulous command of the research team, the overhaul workers followed the construction plan and finally successfully repaired the multi-functional overhead cranes of the group's second aluminum plant. In the multiple test runs on April 22 and 23, the aluminum crane track of the multifunctional crane unit was operating normally and reached the requirements for use.
The successful implementation of the overhaul technology of the Iraqi Electric Power Group has accumulated valuable technical experience for the Group to overhaul the multi-function crane units, creating a precedent for independent maintenance of the Group's large crane units, and greatly improving its own maintenance level. Business skills can save the group over RMB 1 million in maintenance funds each year.
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