First, the inspectors need to focus on observing whether the appearance of the high-speed elevator compensation chain is intact and whether there are obvious signs of damage, deformation or wear. The polyurethane coating is the protective layer of the chain. If it cracks, peels off or is partially sunken, it may expose the internal metal links and accelerate the corrosion and wear of the chain. At the same time, it is necessary to check whether there is oil stain or foreign matter entangled on the surface of the chain. If there is, it should be cleaned in time to avoid affecting the normal swing of the chain or increasing the running resistance. In addition, the color change of the chain should also be noted. If the polyurethane layer fades abnormally, it may indicate that the material is aging and its performance needs to be further evaluated.
The connection parts of the high-speed elevator compensation chain with the car and counterweight device are the key to ensuring the normal operation of the chain. During the inspection, carefully check whether the connecting bolts, hoists and other parts are loose, deformed or rusted. Confirm the tightness of each component by knocking, visually or using professional tools to measure to prevent the chain from falling off or shaking abnormally due to loose connections. At the same time, pay attention to whether the anti-loosening measures of the connectors (such as spring washers and anti-loosening glue) are invalid, and replenish or replace them in time to ensure the reliability of the connection system.
When the high-speed elevator is running, the noise and vibration of the high-speed elevator compensation chain are important bases for judging its status. Under normal circumstances, the chain should swing smoothly and the sound should be slight. If abnormal noise (such as metal friction sound, impact sound) or obvious vibration is found during the inspection, it may be caused by uneven chain pitch, internal chain link jamming or loose suspension device. At this time, it is necessary to stop the machine for inspection immediately. If necessary, use vibration detectors and other equipment to accurately locate the source of the problem and deal with it in time to avoid the expansion of the fault.
The lubrication of the high-speed elevator compensation chain directly affects its service life and operating performance. During the inspection, it is necessary to check whether the lubricating grease on the chain surface and internal chain links is sufficient, and whether there is any drying or agglomeration. For the high-speed elevator compensation chain with automatic lubrication system, it is necessary to confirm whether the lubrication device is working normally and whether the lubricating oil supply is stable. If insufficient lubrication is found, the appropriate high-temperature and anti-wear lubricating grease should be added in time, and the impurities remaining on the chain surface should be cleaned to ensure the lubrication effect. At the same time, regularly check whether there are leaks in the pipelines and joints of the lubrication system to prevent the loss of lubricating oil.
The suspension device (such as suspension bracket and guide wheel) of high-speed elevator compensation chain is crucial to the smooth operation of the chain. During the inspection, it is necessary to check whether the suspension bracket is firmly fixed on the car or counterweight device, whether there is any deformation or cracking; whether the guide wheel rotates flexibly, whether the wheel groove is severely worn or there is foreign matter stuck. If the guide wheel is abnormally worn, it may cause the chain to deviate, uneven force, and even cause the risk of breakage. In addition, check whether the shock-absorbing rubber pad of the suspension device is aging or invalid, and replace it in time to reduce operating vibration and noise.
The markings on the surface of the high-speed elevator compensation chain (such as specifications, manufacturing date, and safety warnings) should be clearly visible for easy traceability and management. During the inspection, confirm that the markings are complete. If they are blurred or detached, they should be replaced in time. At the same time, check whether the protective facilities (such as protective covers and isolation fences) around the high-speed elevator compensation chain are intact to prevent personnel contact or foreign matter intrusion. If the protective cover is damaged or deformed, it should be repaired or replaced immediately to ensure that it effectively isolates the chain and guarantees personnel safety and normal operation of the equipment.
In addition to on-site inspections, it is also critical to establish a complete operation record and data analysis mechanism. After each inspection, the operating status, abnormal conditions and treatment measures of the high-speed elevator compensation chain are recorded in detail to form a historical archive. Through long-term data accumulation, the chain wear trend, failure frequency and other laws are analyzed to predict potential risks. For example, if it is found that a certain part of the chain is wearing faster, targeted inspections or replacements can be arranged in advance to achieve preventive maintenance, reduce the probability of sudden failures, and ensure the safe and stable operation of high-speed elevators.
