Installation and maintenance of cross shaft universal coupling
 

1,Cross universal couplingWhen installing, first check according to the requirements of the drawingsFlangeThe distribution error of the disc bolt hole, the error of the connection size of the stop and the end face and theUniversal couplingIn addition, pay attention to the sub-arrangement orientation and original phase. In principle, both ends of the coupling can be used as active shafts, but it is advisable to keep the spline fitting as far away as possible from the source of vibration or shock.

2. Fasteners such as bolts and nuts should meet the mechanical performance level requirements. When tightening the nuts, you can inject some adhesive into the threads. After running a shift with load, check whether the bolts are loose and prevent them according to standards. Tighten the torque again and repeat this two shifts to prevent loosening.

3,Universal couplingBearings and spline pairs need to be regularly lubricated. Generally, No. 2 industrial lithium-based grease is used. However, in high temperature conditions, No. 3 or No. 4 calcium-based grease can be used. No. 4 synthetic lithium-based grease can also be used. At the beginning, within three months Inject oil once a month in the internal cavity. After the working conditions are stable, the oil will be injected once every three months, and the oil will be injected once a week under high temperature conditions.

4,Universal couplingRegular maintenance should be carried out, generally after half a year of operation, the specific time depends on the conditions of use. When abnormal noise, vibration, oil leakage and other abnormal conditions are found during operation, the machine should be shut down immediately for inspection and handled in time.

5. Check carefully when repairingParts, Whether the rolling surface of the cross shaft and bearing has peeling, pitting, abrasion and indentation, the indentation should be replaced if the indentation is larger than 0.25mm, and the gasket should be replaced if the amount of wear exceeds 0.35mm.Bearings and cross shafts cannot be cleaned in the same oil pan where other parts are cleaned. After cleaning, they should be blown dry with compressed air. Gasoline and steel wire brushes are not allowed during cleaning.

6. When assembling, proceed in the reverse order of disassembly, pay attention toSpline shaftThe two phases are the same as the spline sleeve; when assembling the cross shaft assembly, the gasket should be adjusted to ensure the coaxial tolerance between the center line of the cross shaft and the center line of the fork.The offset is less than 0.05-0.1mm. The smaller the specification, the smaller the value, while keeping the gap between each shaft end and the gasket within 0.06-0.12mm to prevent excessive shaft movement.

7. In order to increase the service life of the universal coupling, theCross shaftAdjust 180 degrees so that the cross shaft journals are used alternately.