Low headroom electric wire rope hoist track safety inspection requirements?
(1) Check the low headroom electric wire rope hoist rails, bolts and fishplates for loose, damaged, corrosion, cracks, These defects are discovered, should be replaced or repaired. Line rail flaw detector can be used to check the rail crack. Transverse cracks fishplates connection the diagonal crack or longitudinal cracks will have to remove the cracked part and put on the new rail.
(2) rail top surface if it has a small scar or wear can level welding complement, with the grinding wheel polished. The rail top surface and the flank wear and should be not more than 0% (single-sided) or should not exceed 3mm.
(3) the fishplate the connecting bolts generally should have six connecting bolt not less than four, but four connecting bolts should be evenly distributed.
(4) the track due to the installation of the need of adjustment, real horn pad at Horn should be not more than two, the length of not more than 100mm, width should be lower than the rail 10-20mm wide, two sets of horns spacing of approximately 700mm or so, but it should be not less than 200mm, the horn with the track actual ground contact seedlings, should not be less than 60% of the contact surface of the nominal cold Ft check local gap should be no greater than 1mm.
(5) the same cross section of the two-track height difference is less than 10mm; 2m each measuring length of each track along the longitudinal direction should be less than 2mm; full length vertical height difference should be less than 15mm.