Table 3
Maintenance decision-making schedule of coal mine comprehensive mining equipment group.
| Mining equipment group | Minor repair/Day | Medium level repair/Day | Item repair |
|---|---|---|---|
| Shearer | 40,90,121,334,364 | – | 160 |
| Hydraulic support | 121,160,181,334 | 364 | 40,193 |
| Scraper conveyor | 40,90,193,334 | 364 | 121 |
| Belt conveyor | 121,160,181,334 | 193,364 | – |
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