Drum gear coupling often appear problems

1, when working, jumping and channeling big (especially used in high-speed level). When installing the deviation between the two shafts is too large (axial, radial and Angle deviation), plus some rotating parts of the coupling unbalance, to be strictly in accordance with the design of the installation requirements, to achieve installation accuracy.

2. Oil leakage. In addition to the quality of the seals, the main reason is the choice of lubricating oil, can not use thinner lubricating oil, according to the requirements of the product specification, the use of grease.

3. Loud noise. This is also related to the installation accuracy, some in the installation of sufficient to meet the requirements, but with some time after some _ will change.

4, Drum gear coupling gear wear. Greater wear is used at high speed shaft, but there is also wear at low speed. In some mines, not only make the gap between the teeth up to 3mm~5mm, serious is that the teeth on the outer tooth sleeve are sharpened, more importantly, the teeth on the outer tooth sleeve are all shaved, especially when running under high speed working conditions, the tooth coupling performance is outstanding. Treatment method: the main is to adjust the installation accuracy, reduce the gear coupling parts channeling each other, control the amount of load, not load.

5. The tightening bolt for the connection between the two external tooth bushings is loose (mainly appeared on the gear coupling at the spindle and the reducer outlet shaft). The main reason is that _ load, the coordination of the bolt is not tight or loose, because of the coordination is not tight or loose, _ will produce impact force, not long after use, _ will be in multiple impact, the bolt cut. Therefore, the matching bolt should meet the matching requirements according to the design requirements. If the above situation occurs, not only should the bolt be replaced, but also the bolt matching hole should be rehinged. Some coal mines in the replacement, the matching bolt here, into a conical shape, actually shows that the effect is very good.

6. The shaft lifting machine main shaft is fractured due to the stress concentration at the tangential keyway of the coupling on the main shaft, which has happened in coal mine. Mainly during keyway processing, the cutter tip of milling keyway cutter does not meet the requirement of round corner, and some are even sharp corners. Therefore, the stress concentration at the keyway is too large and cracks appear. Under the action of large working load for a period of time (especially in the coal mine used with load), fatigue cracks will appear. Until the main shaft breaks.

Solution to common problems of drum gear coupling: 1. Adjust the position tolerance and size between the two shafts strictly according to the requirements. During installation, attention should be paid to adjusting the end face size between the two shafts of the drum gear coupling and the contact requirements and assembly size between the inner gear and the outer gear sleeve teeth. 2. Pay attention to the varieties and quality requirements of lubricating grease. 3. For the gear coupling used at a higher speed, pay attention to the hardness requirements of the tooth surface. 4, pay attention to the tangential key preparation quality (contact surface requirements). 5, when using _ to control the load, do not load operation. 6, the connection between the two inner tooth sleeve bolts, _ should be hinged with bolts and lock, often pay attention to whether loose in use, if there is a _ should be replaced in time, and the bolt of the hinged hole, also should be rehinged. 7. When the outer gear shaft sleeve to the spindle shaft head, strictly check the chamfer of the coupling hole and the fillet of the spindle and the matching place, so as to prevent i1= the shaft hole and shaft from getting stuck locally and not reaching the requirements of the contact surface.