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In the field of aerial work, vertical mast lifts are key equipment, and the stability and safety of their performance are crucial. However, the equipment may encounter mechanical failures during long-term use, which seriously affects the work efficiency and may even cause safety accidents. Therefore, timely diagnosis and maintenance of mechanical failures are particularly important.
Mechanical failures manifest themselves in various forms. Common problems include unstable lifting, slowed lifting speed, platform shaking, abnormal vibration, structural deformation, and cracks. In order to effectively deal with these failures, professional maintenance personnel need to conduct a comprehensive inspection of the equipment to determine the specific location and cause of the failure.
For unstable lifting or stuck phenomena, checking key components such as lifting guides, rollers, and support frames is the first step. Wear, deformation, or looseness of these components will directly affect the normal operation of the equipment. Maintenance personnel should carefully disassemble the relevant components and conduct a detailed inspection. If any parts are found to be severely worn or deformed, they should be replaced or repaired in time. When replacing parts, be sure to use accessories that meet the original specifications to ensure the mechanical performance and safety of the equipment. At the same time, clean and lubricate the wear of the guides and rollers to reduce friction and restore their normal sliding performance. The selection of lubricants should strictly follow the recommendations of the equipment manufacturer, and avoid using incompatible or inferior lubricants to prevent secondary failures.
In the case of cracks or deformations in the mechanical structure, the maintenance personnel should first evaluate the severity of the cracks or deformations, and if necessary, use professional means such as ultrasonic testing for in-depth analysis. For minor cracks, professional welding technology can be used for repair, but stress relief must be performed after welding to ensure that the strength of the welded parts is consistent with the original structure. For parts with severe deformation or cracks beyond the repair range, they should be replaced decisively to prevent greater safety risks caused by structural instability. When replacing parts, the technical parameters of the equipment manufacturer must be strictly followed to ensure that the size and load-bearing capacity of the new parts meet the design requirements. In addition, the threads of connectors such as support frames and connecting bolts should also be carefully checked to ensure that there is no looseness or corrosion, and should be tightened or replaced when necessary to ensure the stability of the mechanical connection.
In the process of mechanical maintenance, lubrication is an important link that cannot be ignored. Poor lubrication will aggravate the wear of parts and cause poor operation of the equipment. Therefore, the lubrication points should be disassembled during maintenance, old grease and contaminants should be removed, and high-quality grease or lubricating oil should be reapplied. The frequency of lubrication should be reasonably arranged according to the use environment and operating frequency of the equipment to avoid over-lubrication or under-lubrication.
In addition, for hydraulic cylinders and drive mechanisms, in addition to the inspection of mechanical parts, attention should also be paid to the quality of hydraulic oil and the sealing of the hydraulic system. Deterioration or leakage of hydraulic oil will significantly affect the stability of lifting. Therefore, when necessary, the hydraulic oil should be replaced in time and the seals should be inspected to ensure good sealing and stable pressure of the hydraulic system.
