The reasons for chain breakage of scraper conveyor are

The main reasons for chain breakage in scraper conveyors include a combination of factors such as defects in chain material, excessive wear, abnormal load, and improper installation and maintenance.

1、 Chain material and manufacturing defects

1. Insufficient material strength: Poor quality chains have insufficient tensile strength to meet operational requirements and are prone to fracture at stress concentration points.

2. Manufacturing process defects: Poor welding, uneven heat treatment and other quality issues result in fragile chain structure.

2、 Chain wear and abnormal working conditions

1. Long term wear and corrosion:

Corrosion of mine water and friction of materials lead to a reduction in the cross-section of chain links and a decrease in tensile strength.

Uneven wear causes a difference in the distance between the double chain links, leading to partial load fracture.

2‌. Load impact:

The dynamic tension generated by overloading exceeds the limit that the chain can withstand;

Large foreign objects block and cause instantaneous impact loads;

Improper installation and debugging.

3. Imbalance of chain tightness:

Tightening increases the initial tension and loses the buffer margin;

Excessive looseness leads to chain jumping and tilting, resulting in impact loads;

4‌. Component calibration deviation:

The misalignment error of the sprocket causes local stress concentration in the chain;

The misalignment of the chute causes the scraper to get stuck.