The universal joint consists of two halves, which are respectively coupled to the drive shaft and the driven shaft. Most of the general power machines are connected to the working machine by means of a coupling. There are many types of universal couplings, which can be divided into: 1 fixed coupling according to the relative position and position of the two shafts being connected. 2 movable coupling. In order to adapt to different working conditions, the intermediate shaft of the universal joint is generally divided into two parts, which are connected by splines, and the mutual positions of the fork surfaces at both ends can be adjusted by changing the assembly relationship of the splines. The reasonable universal joint transmission design can reliably transmit power, suppress the vibration generated in the motion transmission, and ensure that the two shafts rotate at the same speed and transmit the same torque as much as possible. Therefore, it is necessary to carry out theoretical modeling and simulation analysis on the dynamic characteristics of the universal joint.
The universal joint consists of two single-universal couplings and intermediate shafts that can be used to achieve intersecting, parallel or spatially interleaved coupling between the two shafts to achieve motion and power between the active and driven shafts. Pass. It plays an extremely important role in the development of the mechanical engineering and vehicle industry. Since the angular velocity of the single-axis coupling shaft is periodically changed, an additional dynamic load is generated in the transmission to cause the shaft to vibrate, and the use of a double universal coupling eliminates this disadvantage.