In order to ensure that the counterweight system of aerial work vehicles continues to effectively perform its stable and safe functions, it is essential to establish and strictly implement a set of detailed and operational daily inspections and regular maintenance specifications.This set of specifications should run through all aspects of equipment handover, daily pre-start, regular maintenance and long-term storage, aiming to detect and eliminate potential risks in a timely manner.Daily inspections, usually performed by equipment operators before daily operations, should be part of mandatory safety pre-inspection procedures.The inspection content mainly includes visual inspection: observe whether the appearance of all counterweight blocks (whether fixed or movable) has obvious physical damage, such as serious bumps, dents, cracks or abnormal corrosion; check whether the connecting bolts of the fixed counterweight are loose, missing or rusty visible to the naked eye; for the movable counterweight, it is necessary to check its exposed track, slider or connecting rod mechanism for signs of foreign objects stuck, deformed or excessive wear, and at the same time confirm whether its locking device is in a normal locking state.
 

Regular maintenance is more in-depth and systematic, and should be performed by professional maintenance technicians in accordance with the maintenance cycle specified by the equipment manufacturer (usually combined with operating hours or calendar time).For fixed counterweights, the maintenance focus is on the fastening and anticorrosion of the mechanical connection part.A calibrated torque wrench should be used to re-tighten all fixing bolts according to the torque value provided by the manufacturer.At the same time, carefully check the state of the paint film in the connection area between the counterweight block and the frame, polish the rust spots to remove rust and re-apply anti-rust coating.For movable counterweight systems, maintenance is much more complicated.In addition to the above-mentioned fastening and anticorrosion projects, it is necessary to focus on maintaining its movable mechanism: clean the guide rail and slider, check and lubricate the sliding surface to ensure smooth movement without stagnation; check the wear of the pin shaft and bushing of the drive cylinder or connecting rod, and replace it if necessary; test the action reliability and locking strength of the hydraulic or mechanical locking device; calibrate the position sensor (if equipped) to ensure that the control system can accurately perceive the position of the counterweight.
 

In addition to these specific operations, the soul of maintaining norms lies in recording and traceability.All inspection and maintenance activities, regardless of size, should form written or electronic records, which record in detail the date of inspection, the person in charge, the problems found, the measures taken and the parts replaced.This continuous maintenance file is not only a “medical record” of the health status of the equipment, it can provide traceable clues in the event of abnormalities, and it is also an important basis for measuring whether the management work is in place.In particular, it should be emphasized that any modification, disassembly or weight adjustment involving the counterweight system itself must strictly follow the manufacturer's technical guidelines, and any form of unauthorized modification is strictly prohibited.By internalizing systematic inspection and maintenance norms as part of the safety culture, the “safety cornerstone” of counterweight can truly be made rock solid.