Correlation characteristics of reed couplings

Reed coupling has good damping characteristics, good elasticity, elastic elements change greatly, compact structure, but the price is relatively high, suitable for bearing a large change. Shafting with torque vibration is mainly used in Marine, diesel locomotive, diesel generator set, heavy vehicle and industrial diesel engine power set and other diesel engine power devices to adjust the natural vibration frequency of the torque vibration of the shafting transmission system and reduce the amplitude of resonance.
The reed coupling is composed of a number of reeds of different lengths stacked into a group to form an equal-strength beam structure, in which the longer main reed is directly embedded in the groove between flowers, and the rest are the auxiliary reeds of different lengths, which are symmetrically distributed. The structure is used for bidirectional transmission (reversible), and the asymmetry is used for one-way transmission.
The elastic element of an elastic thwarting spring coupling is composed of a group of reeds, which are radially distributed along the radial direction. One end of each group of reeds is a fixed end, forming a fixed connection with the support block, and the other end is a free end, forming a movable connection with the associated parts. When the coupling transmits torque, the movable end of the reed in contact with the spline shaft is bent and deformed relative to the fixed end, so that the two halves of the coupling are twisted relative to a certain Angle. In order to increase the buffer and vibration absorption effect of the coupling, the cavity between each group of reeds is filled with lubricating oil. Under the action of variable load, the reeds bend left and right, forming the pressure change of the oil chamber, forcing the lubricating oil to flow from one side to the other side through the gap on both sides of the reeds, resulting in large viscous friction damping. The coupling is characterized by good damping performance and lubricating oil can also reduce friction and wear directly on the reed due to bending deformation of the reed.