时间：2013-11-20 09:35　作者：admin　点击： 次

The conditions to be considered before the selection of universal couplings are as follows:
1. Whether there is a transmission device between the prime mover and the universal coupling.If there is a transmission ratio, it will be output by several shafts after passing through the intermediate transmission device, that is, whether there is power split.Consider the type, power and speed of the prime mover.
2. The type of prime mover and the load category of the optional cross-shaft universal coupling to transmit the load, one-way constant load, pulsed load or two-way alternating load, and the installation state of the universal coupling.Horizontal, vertical or inclined installation.Try to use the axis angle of less than 3 degrees as much as possible. If you have to tilt the installation, you must determine the horizontal and vertical angles.
3. Considering the working environment of the prime mover, whether it is affected by harsh environmental conditions such as high temperature, dust, water spray, chemical corrosion, etc., choose the corresponding type of universal coupling according to the different use environment.
4. Know the required connection form and specific installation dimensions at both ends of the universal coupling, and understand whether there are special requirements such as mounting brackets.
5. What is the speed of the cross shaft universal coupling itself?Whether dynamic balance is required, and when telescopic is required, what is the outward elongation of the universal coupling in the shortest state? For universal couplings that do not require telescopic, compensation for axial dimensional errors must be considered.The location for compensation in the system should be determined.
6. Whether there are restrictions on the installation location.What is the specific installation length and whether it needs to be telescopic.When it is required to expand and contract, what is the outward extension of the universal joint in the shortest state.For universal joints that do not require expansion or contraction, the compensation of axial dimensional errors must be considered, and the position for compensation in the system should be determined.
Choosing a coupling suitable for the prime mover requires a deep understanding of the above-mentioned prerequisites and external influence factors.Gradually determine the specifications of the shaft, and finally determine which structure to choose.