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Repair and maintenance of impactor
Release time:
2019-10-21
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Under normal rock drilling conditions, the impactor shall be overhauled, cleaned and reassembled once every working 200 hours, and once every 100 hours when drilling holes or discharging slag with mud. This work shall be carried out in the repair workshop by special personnel.
Cleaning, Inspection and Repair
1. Thoroughly clean all the removed parts with cleaning agent and blow dry with compressed air.
2. Overhaul all parts of each part. If there is any bump or scratch, polish and repair it completely with file, scraper, fine oilstone, etc. (piston parts can be stuck on the lathe for grinding). If there is any thermal crack or damage, replace it.
3. Measure the large outer circle of the piston and the inner diameter of the cylinder with a micrometer and an inner diameter gauge. If the matching clearance is too large, replace a new piston or cylinder.
4. Check the wear of the brazing sleeve. When the outer circle is worn to less than the outer diameter of the outer tube, replace it with a new one.
5. Check the wear of the spline of the brazing sleeve, insert a new drill bit into the spline of the brazing sleeve and twist it. If the rotation range exceeds 5mm, replace the brazing sleeve.
6. Lubricate the repaired parts and all parts to be assembled.
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