I. Direct operational abnormalities
1. Slippage: Insufficient tension reduces friction between the belt and the drive roller, causing the drive roller to idle while the belt moves slowly or stops, especially noticeable during startup or when the load increases.
2. Tooth skipping failure: For PU conveyor belts with synchronous belt structures, insufficient tension will damage the meshing accuracy of the teeth, causing tooth skipping, resulting in inaccurate product positioning, misalignment, or even product falling off.
3. Abnormal operating noise: A loose belt will slap against the idlers or frame during operation, producing a "slapping" or "squeaking" sound, affecting the working environment and indicating potential malfunctions.
II. Accelerated component damage
1. Abnormal belt wear: Slippage generates continuous friction, causing the belt surface to heat up, accelerating aging, and leading to fraying and cracking at the edges, shortening its service life.
2. Joint damage: Uneven tension subjects the joint to additional shear force, easily causing delamination, loosening, and in severe cases, breakage, resulting in a complete production line shutdown. 3. Increased Bearing and Motor Burden: Although insufficient tension may seem to reduce the motor load, repeated starts and stops and current fluctuations caused by slippage increase the motor's thermal load, potentially leading to overheating and damage over time.
III. Safety Hazards and Production Losses
1. Material Spillage or Blockage: Belt slippage leads to unstable conveying, causing material to accumulate at the inlet or fall midway, potentially causing blockages and equipment jamming.
2. Fire Risk: In extreme cases, continuous slippage friction generates high temperatures. If flammable dust or oil is present in the environment, it may ignite the belt or surrounding materials, causing a safety accident.
3. Downtime Losses: Frequent malfunctions require downtime for adjustment or belt replacement, affecting production cycle time and increasing maintenance costs.
IV. Indirect Impacts
1. Decreased Transmission Efficiency: Energy loss occurs in ineffective friction, increasing system energy consumption and unit output power consumption.
2. Control System Misjudgment: Automated production lines rely on stable belt operation. Signal deviations caused by insufficient tension may lead to PLC alarms and emergency stops, interfering with normal processes.
