Time : 2019-01-23 Browse : 13
The claw-type elastic coupling exhibits unique characteristics when reversing, which is closely related to its structural design and working principle.
From the perspective of reversal characteristics, the claw-type elastic coupling has the same reversal characteristics for clockwise and counterclockwise. This is because the structural standards of its two half-couplings are consistent, the multiple claws on the end face are symmetrically distributed, and the elastic element is placed between the claws. When the active shaft rotates clockwise or counterclockwise, the torque is transmitted to the driven shaft through the contact between the claws and the elastic element. Due to the symmetry of the structure, there is no difference in the power transmission path and force state during reversal, thus ensuring the consistency of the reversal characteristics.
The claw-type elastic coupling is connected by the cooperation of the claws of the two half-couplings and the elastic element, and the contact torque is transmitted from the active shaft to the driven shaft. When transmitting torque, the load distribution on the contact surface of the claw is related to the shape of the contact part, and as the diameter of the coupling increases, the unevenness of the load distribution will increase accordingly. If there is a gap between the working surface of the elastic element and the claws of the half-coupling, this unevenness will be further aggravated, resulting in uneven loads between the loaded claws. However, this load distribution characteristic is consistent in both forward and reverse rotation, and does not affect the symmetry of its reversal characteristics.
In addition, the claw-type flexible coupling has a small number of parts, small dimensions, and a variety of hardness classifications of elastic elements, which can adapt to different working conditions. However, it should be noted that the torque it transmits is limited. Once the elastomer is damaged or fails, the claws of the two half-couplings will mesh together to continue to transmit torque, which may cause problems in the system. This situation may occur in both forward and reverse rotation, and attention should be paid during use.
In summary, the reversal characteristics of the claw-type elastic coupling are mainly characterized by symmetry, which enables it to work stably in a transmission system that requires forward and reverse switching, but the unevenness of its load distribution also needs to be considered during design and use.
