Precise control of the system, resolving system malfunctions
In the field of electrical and control systems, faults in limit switches, inaccuracies in encoders, and failures of sensors are common causes of abnormal equipment shutdown. When alarms such as "lifting positioning timeout" or "upper/lower limit position triggered" occur, the troubleshooting approach should include checking if the deceleration distance is insufficient, if the brakes have fully released, and if the position feedback signals are continuous.
At the same time, data distortion or communication interruption in the elevator monitoring system should not be overlooked. Deviations in height and weight sensors, loose wiring, or signal interference can all lead to incorrect operation of the protection mechanism. Experts recommend that sensors should be professionally calibrated on a regular basis and a dual-channel redundant communication mechanism should be established to prevent equipment from becoming out of control due to a single link failure.
Focus on the core components and identify mechanical hazards
Mechanical failures are the primary factor threatening the safe operation of elevators.
According to industry technical analysis, the anti-fall safety device, as the "lifeline" of the elevator, is of crucial importance. If there is oil stain on the safety device housing, it may indicate that the internal centrifugal block mechanism has been contaminated. In the event of overspeed, it will be unable to function effectively. In addition, the preload force of the connecting bolts of the standard section, the dynamic changes in the verticality of the guide rail frame, and the meshing clearance of the gear and rack are all easily overlooked "deadly blind spots".
If the bolts do not reach the specified preload force, they will gradually loosen under alternating loads, leading to connection failure; while excessive verticality deviation will accelerate component wear and even trigger the risk of derailment.
During daily inspections, not only should the surface of the equipment be paid attention to, but also the details such as whether the foundation drainage ditch is unobstructed and whether the effective travel of the layer door interlock meets the standards should be thoroughly examined.
For the wear and aging of core components, early detection and early replacement should be carried out, and after maintenance, strict load tests and special inspections should be carried out to ensure that the equipment operates in the best condition and effectively eliminate unplanned shutdowns and safety accidents at their inception.
