1) Check
Checking whether the universal coupling is abnormal during operation can not only ensure safety, but also improve the operation rate of mechanical equipment, which is also beneficial to extending the service life of the universal coupling. If any abnormality is found, stop the operation immediately to find out the cause.
2) Lubrication
Regularly lubricate the bearing and spline. In addition to operation, oil shall be injected once a week within six months, once every six months after the working conditions are stable, and once every three months for spline shaft and universal coupling used for main drive of rolling mill.
3) Maintenance
In case of abnormal sound, vibration, oil leakage and other abnormal phenomena, stop the machine as soon as possible for decomposition inspection. Even if no abnormality is found, regular inspection shall be carried out, especially for universal couplings used in important parts and used continuously for a long time without stopping midway. The standard time is 5000 hours or one year, and the specific time shall be determined according to the use conditions.
a) Removal
During disassembly, dirt and oil on the universal coupling shall be removed, and foreign matters shall be prevented from entering the bearing and spline. Before disassembly, white paint shall be used to mark the connecting parts, bearings, cross shafts and other parts to prevent misalignment during assembly.
b) Cleaning
The bearing and cross shaft cannot be cleaned in the same oil pool where other parts are cleaned, and should be dried with compressed air after cleaning.
c) Check
After disassembly, the main parts shall be carefully checked for wear and damage, and replaced according to the extent. Check the cross shaft and rolling surface for peeling, pitting, wear and indentation. If such damage is found, replace it.
d) Assembly
The assembly shall be carried out in the reverse order of disassembly, and the white mark shall be used to make it exactly the same as the position before disassembly. The phase of the forks at both ends of the spline shaft and the spline sleeve shall be the same; Ensure the axial clearance of 0.05~0.10mm on one side of the cross shaft; The coupling bolts shall be pre tightened with a torque wrench according to the specified pre tightening torque; After assembly, relubricate its bearings and splines.
