I. Maintenance cycle:

After 1 month of repairs; 1 to 3 months of minor repairs; 12 to 24 months of intermediate repairs; 60 to 120 months of overhauls.

Ⅱ.maintenance content:

1. Repair: Mainly check the oil quantity, adjust the clearance, fix each bolt, change the individual liner or check the wear of the liner, and repair the feeder.

2. Minor repair: check and measure the tooth surface wear, check the liner wear, and replace it in time.

3. Intermediate repair: change some parts of the feed, change the transmission small gear wheels and bearings, and disassemble the reduction gear box for inspection. The large gear can be adjusted and used according to the situation after 3 to 5 years of operation, and the hollow shaft should be measured for 3 to 5 years.

4. Overhaul: check cleaning, measurement, repair or replace large gears, hollow shafts, spherical tiles, transmission shafts, pinions and cylinders according to wear and tear, repair and replace electrical components, after electrical equipment overhaul, test run and acceptance .

Ⅲ.maintenance standards:

1. The machining surfaces on the two bearing bases are on the same horizontal plane, the center distance is 1mm, the longitudinal centerline deviation is 0.5mm, and the horizontal centerline deviation is 0.5mm per meter.

 2. The spherical contact surface of the tile seat should have an even connection angle; no less than 1 or 2 points within each 50 × 50mm2; the contact surface of the hollow shaft and the tile should be no less than 2 points per square inch from 90 ° to 100 °. The clearances on both sides of the bearing are approximately the same.

3. The mating surface of the cylinder flange and the front end cover should maintain good contact. No gaskets are allowed. The tolerance of the different axial degrees of the two hollow shafts is less than 0.8mm. When the large ring gear and the cylinder end cover are connected and calibrated, they should be thrust, with positioning pins, and the radial swing of the ring gear should be no more than 0.5mm and the axial swing should be no more than 0.84mm.

 4. When installing the liner, the end cover should be installed first. The cylinder liner should start from the population and follow the assembly requirements. Each screw should be tightened evenly and must not leak. There must be no gaps in the rubber lining board, and the gaps must be blocked with a sponge.