overhead crane inspection and maintenance of six months

1 ) Check all gear reducer and wear, pitting damage to the Overhead bridge crane tooth surface should not exceed 30% of the engagement surface and a depth of not more than 10% of the original thickness of the tooth (fixed chord tooth thickness ) ; wear of gear tooth thickness percentage of the original tooth thickness does not exceed 15% to 25% ; checks bearing the state ; replace oil .
2 ) Check the large and small wheels condition, lubricate the wheel bearings to eliminate the phenomenon of gnawing track .
3 ) Check the main Bridge gantry crane beam, the beam end whether to open the main seam welding, corrosion phenomena , rust should not exceed 10 % of the original thickness of the main force components whether fatigue cracks ; various rails , brackets are intact ; inspection girder, end beam and tighten the bolt again .
4 ) Check the main beam deformation . Check rail trolley case . Under no-load main beam interference should not exceed their span of 1/ 2000 ; beside the main beam bent inwards level shall not exceed 1 /1500 to measure length ; trolley rail track should produce the phenomenon , the top surface and side rail wear ( sided ) volume must not exceed 3mm.
5 ) Check the KS Crane Group reel , the reel wall wear should not exceed 20 % of the original thickness of the rope groove convex peak does not strain sharp .
6 ) All bolts and tighten the fastening bolts on the crane .