Assessing the performance of helical gears in mining conveyor systems typically involves the following key aspects:
1. Gear Accuracy: The manufacturing precision of gears is crucial for their performance. This includes pitch errors, tooth form errors, lead direction errors, and radial runout. High-precision gears can reduce noise and vibration, improving transmission efficiency.
2. Tooth Surface Quality: Smooth tooth surfaces can reduce gear noise. This is usually achieved through machining methods such as grinding and honing, as well as proper running in to reduce the roughness of the tooth surface.

3. **Tooth Contact**: Proper tooth contact can reduce noise. This means that the teeth should contact each other at the center of the tooth width, avoiding contact concentrated at the ends of the tooth width. This can be achieved through tooth form modifications such as drum shaping or tip relief.
4. **Backlash**: Appropriate backlash is important for reducing noise and vibration. When the transmitted torque is pulsating, collisions are more likely to occur, so reducing backlash can have a good effect. However, too little backlash can increase noise.
5. **Overlap**: Gears with a high overlap ratio tend to have lower noise. This can be improved by reducing the pressure angle of engagement or increasing the tooth height.
6. **Longitudinal Overlap**: For helical gears, the more teeth that are in contact at the same time, the smoother the transmission, and the less noise and vibration there will be.
7. **Load-Carrying Capacity**: Gears must be able to withstand the high loads in mining conveyor systems. This is usually ensured by material selection and manufacturing processes such as heat treatment.
8. **Durability**: Gears helical gear need to operate for extended periods in the harsh mining environment without frequent replacement, making durability an important consideration.
9. **Lubrication and Cooling**: Proper lubrication and cooling systems are crucial for the performance and lifespan of gears. The choice of lubricating oil and lubrication methods should comply with specific industrial standards.

10. **Noise and Vibration**: The levels of noise and vibration in mining conveyor systems need to be controlled within safe and comfortable limits.
11. **Maintenance and Lifespan**: The maintenance requirements and expected lifespan of gears are also important indicators of their performance. Low-maintenance and long-life gears are more suitable for the harsh conditions of mining.
12. **Safety Standards**: Compliance with specific safety standards, such as the "Safety Code for Belt Conveyors in Coal Mines" (MT654—2021), ensures the safety performance of the conveyor and prevents accidents.
Through a comprehensive assessment of the above aspects, it can be determined whether the performance of helical gears in mining conveyor systems meets industrial requirements and safety standards.

helical gears