2 Tons Single Beam Overhead Crane with High Quality Used for Clean Room
Contents of crane semi-annual inspection and maintenance
1. Check the gear meshing and wear of all reducers. The pitting damage on the tooth surface should not exceed 30% of the meshing surface, and the depth should not exceed 10% of the original tooth thickness (fixed chord tooth thickness); the tooth thickness wear of the gear The percentage of the original tooth thickness should not exceed 15%~25%; check the state of the bearing; replace the lubricating oil.
2. Check the condition of the large and small wheels, lubricate the wheel bearings, and eliminate the phenomenon of rail gnawing.
3. Check whether the main welding seams of the main beam and the end beam are open-welded and corroded. The corrosion should not exceed 10% of the original plate thickness, and whether there are fatigue cracks in the main stress components; whether various guardrails and brackets are intact; check The main beam and end beam bolts are tightened again.
4. Check the deformation of the main beam. Check the condition of the trolley track. When the main beam is not loaded, the downward disturbance should not exceed 1/2000 of its span; the inward horizontal side bend of the main beam should not exceed 1/1500 of the measured length; the track of the trolley should not be stuck, and the top and side surfaces of the track are worn ( single side) shall not exceed 3mm.
5. Check the condition of the drum, the wear of the drum wall should not exceed 20% of the original wall thickness, and the peak of the rope groove should not be strained sharply.
6. Tighten all connecting bolts and fastening bolts on the crane.