Conveyor belt deviation is a common fault of belt conveyor, and targeted adjustment methods need to be taken according to the specific deviation phenomenon and cause. The following is the classification of adjustment methods and operation guides sorted out by comprehensive search results:
1. Roller adjustment method
Principle: When the roller axis is not perpendicular to the center line of the conveyor or the roller surface is unevenly worn/sticky, it will cause "loose but not tight" or "large but not small" phenomenon.
Operation:
If the conveyor belt deviates to the right side of the roller, move the right bearing seat forward or the left side backward; the tail roller is adjusted in the opposite direction.
Clean the sticky material on the roller surface or replace the unevenly worn roller to ensure the same diameter.
2. Roller adjustment method
Principle: When the roller group is not installed correctly or the bracket is offset, the conveyor belt will "run high but not low" or "run backward but not forward".
Operation:
When the conveyor belt deviates without load, move the deviation side roller forward 1-2cm along the running direction of the conveyor belt, or raise the bracket on the other side.
Install the self-aligning roller group (intermediate rotating shaft type, vertical roller type, etc.), and use the lateral thrust to automatically correct the deviation (suitable for short conveyors).
3. Tension force adjustment method Principle: When the tension on both sides of the conveyor belt is inconsistent ("running tight but not loose") or the whole belt is loose, the tension device needs to be adjusted.
Operation:
When both the empty load and the heavy load deviate on the same side, adjust the tension mechanism screw or counterweight to balance the tension on both sides.
When there is no fixed direction of deviation, the conveyor belt needs to be tensioned as a whole.
4. Material drop point correction method Principle: The material overload at the transfer point will impact the conveyor belt and cause deviation (if it deviates to the right, it will run to the left, and vice versa).
Operation:
Increase the drop at the transfer point or add a material baffle to make the material fall to the center of the conveyor belt.
The width of the guide trough should be controlled at about 3/5 of the width of the conveyor belt [3.
5. Other auxiliary methods
Cleaning and maintenance: Remove materials adhered to the drum and roller in time to avoid deviation caused by local diameter changes.
Replacement or repair: If the conveyor belt edge is worn, the joint is not straight, or it is aging and deformed, it needs to be repaired or replaced.
Install a limit device: such as a vertical roller or an automatic deviation correction system (optical sensor + cylinder combination) to force reset.
