8-hole coupling diaphragm

The 8-hole coupling diaphragm mainly bears 4 kinds of forces:

1. Bending stress caused by axial installation error.Due to the actual installation error in the axial direction, the diaphragm will be bent and deformed in the axial direction.The displacement is loaded in the axial direction of the middle bolt hole, and the radial displacement and the axial displacement are fixed.

2. Bending stress caused by angular installation error (periodical profit).Due to the actual installation error in the axial angular direction, the diaphragm is periodically deformed along the axial direction, and it is the main factor that determines the fatigue life of the diaphragm.The magnitude of the additional stress is not only related to the angular displacement of the two shafts and the relative axial displacement of the two shafts, but also to the number of bolts of the coupling, the thickness of the diaphragm, and the distribution radius of the coupling bolts. Therefore, it is recommended to find the correct standard. It should be carried out according to the equipment design requirements, and the radial direction is less than or equal to 0.15mm, and the end face runout is less than or equal to 0.1mm.

3. Film stress caused by torque.The force generated by the torque on one side is evenly distributed on the four spaced bolt holes. On all 4/1 diaphragms, the force acts on the middle of one side of the middle bolt hole in the circumferential direction to fix the radial displacement and the axial direction. Displacement.

4. Centrifugal stress produced by centrifugal inertial force.High-speed mechanical centrifugal inertial force is very important in the stress calculation of the structure. Its centrifugal inertial force can be loaded according to the radial unit body force f=2rρ(2πn/60), the direction is radially outward, where n is the speed, r Is the radius and ρ is the density.Fix the radial displacement, circumferential displacement and axial displacement of the middle bolt hole, and there is no other load around it.

Due to the misleading of GB/T3852, each specification in my country's diaphragm coupling product standard corresponds to a variety of shaft hole lengths as the shaft hole changes. When the diaphragm coupling standard is converted into my country's standard, it is also added With various shaft hole lengths, it seems that this is the only way to be considered as a complete conversion.Diaphragm coupling shafting transmission system: shafting transmission usually consists of one or several diaphragm couplings connecting the main and driven shafts to form a shafting transmission system to transmit rotation or movement.