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Unbalance Factors and Vibration Analysis of Universal Couplings

Unbalanced factors affecting universal couplings:
1. There is a deviation in the design of the parts of the universal coupling, or its material is unqualified, or it is caused by uneven wear.
2. The centering surface of the universal joint and the shaft is eccentric and unbalanced.
3. The gap between the parts of the universal joint is unreasonable, or the distribution of accessories is uneven and asymmetrical.

Reasons for the vibration of the universal coupling:
1. The balance sheet on the universal coupling does not perform dynamic balance compensation.
2. The two universal joints in the universal coupling are not on the same plane.
3. There are problems with the universal coupling, such as bending, sag, etc., which destroys the original dynamic balance.
4. The bolts on the flange are loose, which makes the coupling position deflected.
5. The spline is worn or the gap is too large.

Summarize:

There are many structural types of universal couplings, such as: cross shaft type, ball cage type, ball fork type, bump type, ball pin type, ball hinge type, ball hinge plunger type, triple pin type, and tripod rod type , three-ball pin type, hinge rod type, etc., the commonly used is the cross shaft type, followed by the ball cage dragon, the common feature of the universal coupling is that the angular compensation is large, and the two axes of the universal coupling of different structural types The included angles are different, generally ≤5°-45°. The universal coupling utilizes the characteristics of its mechanism to make the two shafts not on the same axis, and when there is an angle between the axes, it can realize the continuous rotation of the connected two shafts, and reliably transmit torque and motion. The universal coupling is characterized by large angular compensation capability, compact structure and high transmission efficiency. In practical applications, they are divided into heavy duty, medium duty, light duty and small duty according to the transmitted torque.
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Tel: 0311-69772900

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