Supporting roller with high-sealing-performance bearings

Abstract

The invention discloses a supporting roller with high-sealing-performance bearings. The supporting roller comprises a barrel body, bearing bases, the bearings and a supporting roller shaft, wherein bearing base installation parts are formed at the two ends of the barrel body; the bearing bases are installed in the bearing base installation parts of the barrel body correspondingly; the bearings are installed in the bearing bases correspondingly; each bearing comprises a bearing inner ring, a bearing outer ring, a retainer and a plurality of balls; and the supporting roller shaft is installed in the center of the barrel body through the bearings and penetrates through the barrel body in the axial direction. Each bearing further comprises a first sealing piece detachably installed on the outer side end surface of the corresponding bearing inner ring. Each first sealing piece extends in the radial direction and covers the outer side end surface of the corresponding bearing outer ring. According to the supporting roller with the high-sealing-performance bearings, traditional complex high-cost sealing is canceled through the bearings, full sealing is conducted on the outer side end surfaces of the bearings through the first sealing pieces, grease leakage is prevented, and meanwhile, water and dust are also prevented from entering the working surfaces of the bearings, so that the effect that the supporting roller normally operates under various working conditions is ensured.

Description

technical field [0001] The invention relates to the technical field of idler rollers, in particular to an idler roller equipped with bearings with high sealing performance. Background technique [0002] In belt conveyors, especially large belt conveyors used in coal mines, idler rollers are one of the important components. The role of the idler is to support the conveyor belt and the weight of the material. The operation of the idler must be flexible and reliable to reduce the friction between the conveyor belt and the idler, which plays a key role in the life of the conveyor belt, which accounts for more than 25% of the total cost of the conveyor. [0003] The existing idler roller includes a cylinder body 10, two bearing housings 20, two idler roller special bearings 30 and an idler roller shaft 40. A bearing housing installation part 11 is formed at both ends of the cylinder body 10, and the two bearing housings 20 are respectively Installed in the bearing seat installat...

AI Technical Summary

Problems solved by technology

However, the existing special bearings for rollers have the following disadvantages: 1. They are not suitable for the application of outer ring rotation, and the grease is easy to leak; 2. Additional seals or skeleton seals are required, which increases the overall manufacturing cost of rollers; 3. The external labyrinth or other seals increase the damping and reduce the operating efficiency of the bearing; 4. If the external additional seals are not used, the bearings are directly exposed to the atmospheric environment, and the existing seals cannot protect the bearing end face, and the bearing steel Easy to rust, affecting the normal operation of the bearing

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