Common faults and treatment methods in the work of the coupling

  In the process of daily use, the coupling often has the following four failures: 1. The coupling tooth surface is severely damaged. 2. The axial displacement of the gear ring of the coupling is large, and it can't even mesh. 3. The coupling has broken teeth. 4. The coupling bolts are broken.The causes of these failures mainly include the following two aspects: 1. Insufficient or lack of oil in the coupling of the lifting accessories.Or improper use of grease may result in calcification of the grease, resulting in inability to lubricate between the tooth surfaces, or poor lubrication, resulting in serious tooth surface wear.Treatment method: As long as the new grease is replaced, qualified grease oil is injected on schedule to prevent oil leakage, and the amount of oil can be avoided. 2. The level and coaxiality error of the two shafts is too large, which exceeds the range that the coupling can compensate, which makes the meshing of the shaft teeth and the internal teeth inaccurate, resulting in local contact and additional torque.Handling method: This kind of fault handling is more difficult and needs to be stopped for handling.That is to realign, or realign the side of the reducer, or realign the side of the reel.First find out the part with larger offset error, so first measure the offset of the coupling to that side, that is, measure the level and coaxiality of the main shaft and the level and coaxiality of the reducer main shaft, and then press the quality again. The fault can be eliminated by leveling and straightening the scale.
        In addition, the horizontality and concentricity of the two shafts have a large error, which causes the coupling to be awkward when rolling.The reason for the gear wear of the above-mentioned lifting fitting coupling is basically similar. In addition to the normal force, the connecting bolt is also subjected to additional bending moment, which causes it to break.This is the main reason.This kind of reason usually occurs when the level difference between the left and right sides of the reducer main shaft is large.Furthermore, bolts with small diameters, insufficient strength, or poor bolt materials can also cause bolts to break.