I. Tensioning Device Adjustment (Suitable for uneven tension on both sides)
When the belt continuously shifts to one side, and this occurs under both no-load and heavy-load conditions:
Follow the principle of "tightening rather than loosening," appropriately tighten the tensioning mechanism on the misaligned side, or loosen it on the opposite side; Adjust the screw, counterweight, or hydraulic tensioning system, making small adjustments of 1-2mm each time, and then adjust again after a test run to avoid over-adjustment.
✅ If the misalignment is unpredictable and sways left and right, it may be due to overall belt slack, requiring full tensioning until there is no slippage.
II. Roller Position Correction (Suitable for concentrated misalignment at the head/tail)
If the misalignment is concentrated at the drive or redirecting rollers:
Head Roller Adjustment Method:
Belt misalignment to the right → Move the right bearing forward, or the left bearing backward;
Belt misalignment to the left → Move the left bearing forward and the right bearing backward.
Tail Roller: The adjustment direction is opposite to the head roller; pay attention to the differences.
All roller axes must be perpendicular to the conveyor centerline, with a deviation controlled within ±1mm.
⚠️ Always stop the machine and disconnect the power before operation. Use a laser alignment instrument for calibration to ensure accuracy.
III. Idler Group Optimization (Suitable for belt misalignment in the middle section)
When the belt deviates in the middle section:
Move the idler group on the deviating side forward 1-2cm in the running direction, or move the idler on the other side backward; the idler mounting holes are designed as elongated holes during manufacturing for easy on-site adjustment.
For sections with frequent misalignment, vertical self-aligning idlers can be temporarily installed for dynamic correction.
✅ It is recommended to adjust each group one by one starting from the point of deviation to avoid misjudgment caused by simultaneous changes at multiple points.
IV. Material Drop Point Adjustment (Applicable to Misalignment under Heavy Load)
If normal under no-load conditions, but misalignment after loading:
Check the position of the guide chute and buffer chute to ensure the material falls evenly along the belt centerline; Install adjustable baffles or guide plates to change the material's falling direction and eliminate unilateral impact; If necessary, reduce the material drop height or add buffer rollers to reduce impact.
✅ The "running to the larger side" phenomenon is common in feeding eccentricity. After adjustment, a load test run is required to verify the effect.
V. Cleaning Adhesive Materials (Applicable to Misalignment Caused by Uneven Diameter in Local Areas)
When materials such as coal slime or mineral powder adhere to the surface of the rollers or idlers, the "running higher, not lower" principle will attract the belt:
After stopping the machine, use a scraper, brush, or high-pressure air to clean the material adhering to the surface of the rollers and idlers; Check if the cleaner is malfunctioning to prevent material from being carried onto the return belt surface, causing misalignment of the lower idler; Regularly inspect the rubber-coated rollers to remove embedded foreign objects and prevent local bulging.
