Analysis and solution of the cause of Conveyor roller failure (Part 5)
Soak in the water damage to the roller: the labyrinth seal of the roller is not contact seal, when immersed in water, the outside of the tube is formed pressure poor. The water will emulsify the grease in the sealed chamber, follow the clearance and then damage the bearing. Therefore, everyone must learn, dustproof roller is not allowed to use the soaking in the water, if the environment is inevitable work roller soaked in water, can no longer use rolling bearing, and replace the nonmetal sliding bearing the best effect.
Bracket deformation caused by grinding roller tube body wear: due to the material selection errors or cut corners, cannot meet the design requirements, the bracket of the insufficient rigidity, roller resistance or accident causes of stents, such as deformation, roller and adhesive tape is not running vertically, not only the tube and duct tape wear very serious, resistance increases at the same time, increase energy consumption. Replace the qualified bracket.
Damage caused by heavy falls during handling: in national standards, the axial load and axial direction of the roller are sufficient to meet the operating conditions of the roller. But some people mistakenly believe that roller is the metal material, not afraid fell to throw, 1-2 meters in the far distance thrown directly, cause in the large displacement of roller (axial movement), rotational resistance increase, run-time tube body is soon wear out. It is emphasized that the larger the thickness of the tube, the longer the wear-resisting period. But the bigger the weight, the greater the inertia, the more likely it is to be thrown away. It is best to be careful not to let the roller of the roller be affected.
Convex segmental arc roller damage: some may be due to negligence, belt conveyor convex segmental arc roller spacing is big, after the tape tension, convex segmental arc high roller bearing is very big, roller bearing more than the limit load, bearing of life will decrease significantly. The solution is to increase the roller group or the bearing model of the roller to meet the tensioning load of the belt.
High pressure water gun flushing tape causes damage to idlers: it is easy to adhere to materials in many power plants, ceramics factories and tapes. People are used to the belt conveyor run, with high pressure water gun to flush the tape; ordinary roller waterproof performance is difficult to guarantee the water. Replace the rollers that ensure the sealing is not in the water.
Massive particles abrasion damage roller end face seal: on many occasions, the adhesive tape on the block material fall in the groove of the roller lug stuck, this material will and friction roller nylon seal has been forcibly, quickly put the seal, bearing roller damage caused by pollution. The solution is: change the structure of the roller under the lug, cannot make block material in roller contrite stranded, or shorten appropriately roller (about 20 mm) the length of the pipe body, make the lug and the end of the roller spacing greater than falling block material.
Tape is too soft, cause rapid wear of roller tube body: tape if too soft, leave the tape trough idlers, along with the free deformation and material weight design of roller groove Angle difference is too big, after the grooved roller forced deformation, deformation when the horizontal length increase, between belt and roller has been lateral friction and wear, the tube body and tape at the same time of wear quickly. There are two kinds of solutions: one is to replace the more rigid tape; the second is to increase the roller group and reduce the deformation of the tape.
Bearing quality: if the roller bearing is not polluted, the flexibility is good and the load is not large. The early failure of the bearing is due to the quality of the bearing itself.
