Published: 2025-05-21 14:45:00
How to troubleshoot reel cable faults in loader reels
1. Common Faults and Causes
Cable breakage or damage: frequent winding and unwinding leads to mechanical fatigue, and scratching or crushing in harsh environments exacerbates the damage.
Insulation aging: Long-term high temperatures and oil contamination can lead to leakage and short-circuit risks.
Poor contact: Loose or oxidized terminals, causing unstable power supply to the equipment or intermittent shutdowns.
2. Efficient Investigation Process
Visual inspection: After shutting down and disconnecting the power, carefully check whether the cable outer sheath is damaged or bulging, and whether there is any jamming when the reel is being wound or unwound.
Insulation testing: Use an insulation resistance meter to measure the resistance between cable cores and to ground. If the resistance value is below the standard (e.g., 0.5MΩ), insulation failure occurs.
Circuit inspection: Use a multimeter to measure the continuity of the cable, check whether the terminals are oxidized or loose, and clean or reinstall them if necessary.
3. Emergency Handling and Prevention
Temporary repair: Small-scale damage can be wrapped with special cable repair tape to temporarily restore equipment operation.
Daily protection: Regularly clean oil stains and debris from the cable surface, install protective devices on the reel, and avoid scratches from sharp objects.
Replacement standards: If severe damage, insulation aging, or frequent poor contact is found, immediately replace with cables that meet the specifications.
4. New Key Points for Investigation
(1) Signal Transmission Exception Handling
When the scraper experiences signal transmission issues such as control command delay or insensitive equipment operation, a signal tester should be used to inspect the cable signal transmission line. If the signal is attenuated or lost, check whether the signal connectors are loose or oxidized, and if necessary, re-weld or replace the connectors; If the cable shielding layer is damaged, use shielding tape to wrap and repair it to reduce the impact of electromagnetic interference on the signal.
(2) Key points for inspections in special environments
In special environments that are humid, dusty, or highly corrosive, in addition to routine inspections, focus should be placed on checking the waterproof sealing of cables. Check whether the sealing glue at cable joints has aged or cracked, and replace it promptly if necessary; in dusty environments, regularly clean the surface of the cables and the accumulated dust inside the reels to prevent dust from entering the cables and damaging the insulation layer; in corrosive environments, if signs of corrosion appear on the cable sheath, even if it is not completely damaged, preparations for replacement should be made in advance to avoid sudden failures later.