Insufficient oil or lack of oil in the coupling of the lifting parts. Or improper use of grease, resulting in calcification of the grease, resulting in the inability to lubricate between the tooth surfaces, or poor lubrication, resulting in serious tooth surface wear. In this case, replace the new grease regularly. Inject qualified grease oil to prevent oil leakage. If the amount of oil is sufficient, it can be avoided.

　　Second, the levelness and coaxiality error of the two shafts is too large, which exceeds the range that the coupling can compensate, which makes the shaft teeth and the internal teeth mesh incorrectly, causing local contact and additional torque. And this additional torque can be Decomposed into axial force. Acting on the inner gear ring, the magnitude of this force depends on the size of the deviation, and is proportional to the deviation. The greater the deviation, the greater the force, which causes the inner gear ring of the lifting accessories coupling to produce axial Displacement. If the displacement is too large, it will be uncontrollable, causing serious wear of the gear, or even broken teeth, and the internal and external teeth cannot be meshed until it cannot be transmitted. This kind of fault handling is more difficult and needs to be discontinued. That is, re-align or re-install the reducer side Align it, or realign the side of the reel. First find the part with large offset error, so that first measure the offset of the coupling to which side, that is, measure the levelness and coaxiality of the main shaft and the reducer The levelness and coaxiality of the main shaft can be corrected according to the quality standard to eliminate the fault. In addition, the levelness and concentricity of the two shafts have large errors, which causes the coupling to rotate in a different way. And the above lifting accessories The reasons for the wear of the coupling gears are basically similar. In addition to the normal force, the connecting bolts are also subjected to additional bending moments, which cause them to break. This is the main reason. This reason mostly occurs in the level difference between the left and right sides of the reducer main shaft. In addition, the bolt diameter is small, the strength is not enough, or the bolt material is poor, which can also cause the bolt to break.

　　After the individual parts of the drum gear coupling are processed, we are going to assemble it.The main components are the processed two-half coupling and outer ring, several nylon rods, two baffle plates, and several screws.

　　Assembly steps:

　　1. Put the outer ring on the half-coupling and install a suitable baffle on the flange of the half-coupling, and fix the outer ring and the half-coupling with screws.

　　2. Fill the nylon rod into the hole between the outer ring and the half coupling.

　　3. Install the other half coupling in the outer ring.

　　4. Put another nylon rod into the hole of the outer ring and half coupling.

　　5. Use screws to fix the other baffle with the outer ring of the coupling.