Universal couplingIt is used to connect two shafts of two different mechanisms to make them rotate together, and the role is to transmit torque.There are many structural types of universal couplings, such as cross shaft type, ball pin type, ball fork type, three-prong rod type, etc., of which the cross shaft universal coupling is the most common type.The performance of the universal coupling will affect the transmission of the machine. So, what factors affect the performance of the universal coupling?
1. Materials
The materials for making universal couplings include cast steel, aluminum alloy, etc. The performance of universal couplings will also be affected by the choice of materials.
Universal couplingThere are many ways of connecting the end face, and different ways of connecting will have different results when transmitting torque.If the connection method is not selected properly, it is easy to cause problems such as the fracture of the coupling key when the torque is transmitted, which may lead to equipment failure.
3. Correction
When the universal coupling is connected to the shaft, the universal coupling needs to be corrected. If the correction is not accurate, the performance of the universal coupling will also be affected.
Universal couplings will encounter various problems during use, such as abnormal vibrations during operation.So, how can we solve this problem?I believe that many people have encountered this situation. Next, the editor will analyze this problem in detail, so that everyone can better deal with it and take effective measures to solve the problem.
CauseUniversal couplingThe main causes of vibration are as follows:
1. The balance sheet or component of the universal coupling is not compensated for dynamic balance.
2. During the assembly process, the two couplings are not on the same plane.
3. The universal joint is bent or the shaft tube is recessed, which destroys the dynamic balance.
4. The method of universal couplingUniversal couplingThe connecting bolts of the blue plate are loose, causing the angle to be skewed.
5. The wear of the spline shaft and the sleeve fork is too large, or the gap is too large.
Take measures:
1. Check whether the universal coupling is bumped or not, whether the balance piece is missing, etc., and re-welding.
2. Fasten the bolts of the flange.
Universal couplings can be divided into many types according to the structure type, such as cross shaft type, ball fork type, ball pin type, three pin type, ball cage type, hinge type, etc., of which the cross shaft type is the most commonly used A universal coupling, followed by a ball-cage universal coupling.The common feature of universal couplings is that the angular compensation is large, and the two axis of different types of universal couplingsThe β included angle is different, generally less than or equal to 5°-45°.When choosing a universal coupling, you need to consider the following issuesUniversal coupling :
1. Make clear whether there is a transmission device between the prime mover and the universal coupling. If so, know the transmission ratio, whether there is power shunt, and the type of prime mover.Power, etc.
2. Consider the type of prime mover and the load category of the universal coupling.
3. Consider the installation state of the universal coupling. If it is necessary to tilt, determine the horizontal and vertical angles.
4. Considering the working conditions, different working conditions, the selected universal coupling is also different.
5. Know the connection form and actual installation size of the universal coupling at both ends.
6. Know the speed of the universal joint and judge whether it needs to be balanced, and how many levels of balance are there.
7. Consider the installation position and installation length of the universal coupling.
When selecting the type, it is necessary to consider step by step, determine the specifications of the universal coupling, and finally determine which type of structure to choose.
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