Maintenance of Specific Components of Overhead Cranes and Gantry Cranes
Overhead cranes and gantry cranes are composed of many parts. In daily use, the maintenance of specific parts of overhead cranes and gantry cranes is very important. Let's understand which parts of overhead cranes and gantry cranes need to be inspected, repaired and maintained.
1. Overhaul of transmission mechanisms of bridge cranes and gantry cranes
Check whether the wire rope fixing device meets the requirements and whether there is corrosion, broken wires, loose strands, broken strands, bends, kinks, wear, flattening, etc. If it exceeds the specification, it must be replaced immediately; check whether the hook has cross-sectional wear, peeling, cracks, torsional deformation, increased opening and other defects; check whether the pin and sleeve are severely worn; check whether the pulley has an anti-falling rope groove device , whether the pulley rotates flexibly, whether the pulley groove and rim are broken, worn, or have excessive cracks.
overhead crane maintenance
2. Maintenance of braking devices of bridge cranes and gantry cranes
Check whether there is noise and good heat dissipation during the operation of the mechanism; check and adjust the gap between the brake pad and the brake wheel; check whether the spring and brake rod have fatigue deformation, cracks and other defects; check the lubrication condition of the gear box, reduction box, and external meshing gears and whether the hydraulic oil is leaking; check whether the oil filter is often blocked, whether the safety valve is adjusted after use, whether the braking surface of the brake does not need to be adjusted, and dirt must be cleaned with gasoline or thinner. Check whether there are fatigue cracks on the wheel tread and axle, whether the wheel tread axle wear exceeds the standard, and whether there is any gnawing during operation.
3. Maintenance of metal structures of bridge cranes and gantry cranes
During use, the main stress-bearing components should be regularly checked for overall or local fatigue deformation, looseness, instability, severe corrosion, cracks, damage, etc., and try to prevent deformation and collision damage of components during transportation; check connecting bolts or Riveting, especially looseness, defects and other defects in vibration parts; check whether structural connections and welds have obvious deformation and cracking.
gantry crane maintenance
4. Overhaul of electrical systems of bridge cranes and gantry cranes
Clean the dust and dirt on electrical equipment in a timely manner to ensure that the distribution box, control box, various parts and their contact surfaces are clean; frequently check all cables and wires for damage, and bandage or replace them in time if any damage is found; ensure that the travel switches of each safety device The contacts are reliable in opening and closing, and the contact craters should be polished in time; check whether the power supply and various mechanisms of the bridge crane and gantry crane have short circuit protection, voltage loss protection, zero position protection, overcurrent protection, overspeeding and loss of magnetism of special cranes Protect.
5. Overhaul of safety protection devices of bridge cranes and gantry cranes
Check whether the overload protection devices, buffers, torque limiters, limit position limiters, anti-back tilt devices, wind resistance devices, and protection devices of bridge cranes and gantry cranes are installed according to design requirements, and whether the operation of these devices is sensitive and reliable. Whether the alarm signal can be sent out in time when the regulation is exceeded, and whether the power supply in the dangerous direction can be automatically cut off.
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