Universal coupling pre-tightening connecting bolt adjustment

Universal coupling

The universal coupling is placed in the electroplating bath and the metal film is deposited on the surface of the substrate in the form of electrolysis through direct current. For the working load with large impact, vibration and torque changes, the flexible coupling with elastic elements, namely the elastic coupling, should be selected to cushion, reduce vibration and compensate the shaft offset and the working performance of the transmission system. The torque during frequent forward and reverse rotation and braking is several times of the torque during normal balanced operation, which is overload operation and shortens the service life of the elastic element of universal joint. The coupling can only be overloaded for a short time, and the installation angle of the coupling should be as small as possible.

The universal joint can adjust the angle and axial offset, but the lower the working angle, the longer the service time. After the connecting bolt loosens and breaks, the bolt tension does not exist and the shaft returns to a weak state. At this time, the measured concentricity and parallelism deviation are very different from the manufacturer’s requirements. If you want to adjust the shaft to the qualified state before pre tightening the connecting bolts, pull out the motor anchor bolt, that is, the motor anchor bolt hole and the motor base hole are misaligned, you need to expand the motor base anchor bolt hole, and then adjust the shaft. During normal operation, the tube mill requires that the transmission connecting pipe and the reducer output shaft be in the same line.

Universal Shaft

After the hub is shrunk and installed on the shaft and the gear sleeve is positioned, the cavity between the hub and the sleeve should be filled with grease with a spatula. The flange surface shall be coated with a thin layer of mud film, and the connecting bolts shall be tightened to the appropriate torque. After connecting the half flange, fill the pipe joint with grease nipple. After 3 months before operation, the coupling shall be re-lubricated, and the interval can be increased to 6 months, but not more than 1 year. Different grease fittings or plugs have been removed and properly tightened. The load category of the transmission system is the basis for selecting the type of coupling, and the working load with large changes in impact, vibration and torque.

Universal coupling is a mechanical component used to connect two shafts of different mechanisms and rotate together to transmit torque. In high-speed and heavy-load power transmission, some couplings also have the functions of buffering, damping and improving the dynamic performance of shafting. The coupling is composed of two halves, which are respectively connected with the driving shaft and the driven shaft. The power machine is mainly connected with the working machine through the coupling. Although the dynamic balance test can deal with the imbalance problem, it is also important to control the assembly degree of each component. The unbalance at both ends can be reduced to meet the design and use requirements.

You May Also Like