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The mode of failure
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Reasons
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Corrective measures
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| Belt crack |
1.Overload
2.The inertia of the driven pulley is too much.
3.The diameter of the pulley is too small.
4.The initial tension is too much.
5.Folding and twisting of the belt for improper opeation.
6.The shock load is too much.
7.The belt climbs to the protective ring.
8.Broken pieces of foreign matters fall into the gearing. |
1.Check the design,choose the correct belt width.
2.Choose the correct pulley.
3.Redesign numbers of the meshing teeth.
4.Adjust the proper initial tension.
5.Careful operation when storing and transporting.
6.Prevent unexpected accident from happening, change the design.
7.Adjust the parallelism of the axis, check the protective ring.
8.Cleam the pollutant and check the protective fender. |
| Excessive wear andtear of the belt sides |
1.Pulleys are not parallel,
2.The rigidity of the bearing is not enough.
3,The bend of the protective ring.
4.The rough surface of the protective ring.
5.The belt touches the protective fender or stand of the gearing. |
1.Adjust the parallelism.
2.Strengthen the rigidity and make it fixed.
3.Correct or change the protective ring.
4.Correct of change the protective ring.
5.Check the protective fender or stand. |
| Excessive wear and tearof the belt teeth |
1.Overload
2.Too much initial tension.
3.The rough surface of the teeth.
4.Severe vertical jump of the pulley.
5.Dust or pieces of sand.
6.Violent vibration
7.Too much pollutant fall into the gearing. |
1.Check the design,choose the proper belt with.
2.Adjust to proper initial tension.
3.Check and adjust the roughness of the surface.
4.Check and adjust the vertical jump.
5.Avoid other things enter.
6.Adjust the structure or use devices to reduce the vibration.
7.Clear pollutant. |
| Teeth cutting |
1.Overload or the shock load is too much.
2.The meshing teeth are not enough less than 6 meshing teeth or the numbers of belt teeth is the multiple of the pulley teeth.
3.The initial tension is not enough.
4.The diameter of the pulley is too small.
5.The environmental temperature is too high or oil and other things get in.
6.It stops running because of unexpected accident.
7.The load become more suddenly. |
1.Check the design.
2.Check the design, and make the number of the teeth be an odd.
3.Adjust the initial tension.
4.Enlarge the diameter of the pulley.
5.Change the environment temperature and use a protective cap.
6.Check the devices,prevent the accident from happening. |
| Vertical crack of belt |
1.Belt runs out of the pulley.
2.Belt runs to the protective ring.
3.When installing, the belt cracked by the protective ring. |
1.Adjust the parallelism.
2.Adjust the parallelism and check the protective ring.
3.Careful installation. |
| Belt stretch |
1.The bearing is not fixed well, then the central distance reduced when it works.
2.The tensile members are loose.
3.The tensioning pulley gets loose.
4.Pulley wears.
5.Overload. |
1.Careful installation or improve the structure when designing.
2.Change the belt.
3.Check the tensioning pulley careful a installation.
4.Change the pulley.
5.Check the design,change the belt width. |
| Crack of the belt back orof the belt becomes soft |
The environmental temperature is too high. |
Change the environmental temperature |
| Too much running noises |
1.Overload.
2.The initial tension is too high.
3.The pulleys are not parallel.
4.The diameter of the pulley is less than the belt width.
5.Belt can't mesh well with the belt teeth. |
1.Change the design.
2.Adjust the initial tension.
3.Adjust the parallelism, make it accurate when installing.
4.Check the design.
5.Check the belt and the pulley. |
