Causes and corrective measures for failure of the

2022-07-31
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Causes of synchronous belt failure and corrective measures

failure mode

causes corrective measures belt fracture 1. overload; Check the design; Select the correct bandwidth; 2. the inertia of the driven wheel is too large; Select the correct pulley; 3. the pulley diameter is too small (4) maximum load elongation and failure elongation; Redesign the number of transmission meshing teeth; 4. excessive preload; Adjust the appropriate preload; 5. the belt is twisted and the operation is poor; Storage, transportation, installation and careful operation; 6. excessive impact load; Prevent accidental failure and change the design. 7. climb up the retaining ring; Adjust the shaft parallelism and check the retaining ring; 8. debris or foreign objects fall into the transmission. Clean the dirt and check the protective baffle. Excessive wear of belt edge 1. belt pulley is not parallel; Adjust parallelism; 2. the rigidity of bearing is not enough; Increase the rigidity and ensure the fixation; 3. the retaining ring is bent; Correct or replace the retaining ring; 4. the surface of the retaining ring is rough; Correct or replace the retaining ring; 5. protective baffle or support with contact transmission device. Check the guard or bracket. Excessive wear of belt teeth 1. overload; Check the design and select the correct bandwidth; 2. excessive preload; Adjust the appropriate preload; 3. rough gear surface

check and adjust the surface roughness; 4. serious radial runout of pulley; Check and adjust radial circular runout; 5. dust or sand; Avoid sundries; 6. violent vibration; Adjust the structure or use damping devices; 7. too much dirt falls into the transmission device. Clean up dirt. Toothed shear 1. overload or excessive impact load; Check the design; 2. the number of meshing teeth is not less than 6 teeth or the number of belt

teeth is a multiple of the number of teeth; Check the design so that the number of teeth is odd; 3. the preload is too small; Adjust the preload; 4. pulley diameter is too small; Increase the pulley diameter; 5. if the ambient temperature is too high or other sundries such as oil are mixed to change the ambient temperature, use a protective cover; 6. check the equipment for sudden increase of load due to shutdown due to accident to prevent another accident. Belt longitudinal crack 1. belt running out of pulley; Adjust parallelism; 2. the belt deviates to the retaining ring; Adjust the parallelism and check the retaining ring; 3. the belt shall be cut on the retaining ring during installation. 4. In any case, the operator of shuangmo biological microscope shall not wipe the lens surface with cotton ball, dry cloth or dry lens paper. Pay attention when installing. With extension 1. the bearing is not reliably fixed, and the center distance becomes smaller during operation. Pay attention to the installation or improve the structure during design; 2. the tensile layer is loose; Replace the tape; 3. the tensioning wheel is loose; Check the tensioning wheel and pay attention during installation; 4. the pulley is worn; Replace the pulley; 5. overload. Check the design and change the bandwidth. With back crack

or with softening

1. the ambient temperature is too high. Change the ambient temperature. Excessive running noise 1. overload current; Check the design; 2. excessive preload; Adjust the preload; 3. the pulley is not parallel; Adjust parallelism and calibrate during installation; 4. the pulley diameter is smaller than the bandwidth; Check the design; 5. Test type: normal temperature metal stretching, etc. 5. poor engagement of belt and pulley. Check the belt and pulley. (end)

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