The editor of Ever-Power introduces you to the installation characteristics and calculation method of JZMJ diaphragm coupling
JZMJ Diaphragm Coupling is used to connect the two shafts and transmit the torque to the components, and sometimes also serves as overload protection.This coupling is a fixed connection device, which cannot be disengaged at will when the machine is running normally, it must be disengaged and stopped.
The force of the coupling is summarized into the following four types, and the calculation methods of various forces are given. The eight-hole waist diaphragm is the research object.
(1) Film stress generated by torque.Suppose the transmitted torque is T(Nm), and the total number of pieces is m. For 8-hole bolts, the simplified conditions know: the torque of a single diaphragm is T1=T/m, and the force on each main bolt is F =T/4mR.
(2) Centrifugal stress due to inertia during high-speed rotation.Assuming that the bolt and the coupling diaphragm are of the same material, the respective masses can be calculated. According to the position and the spiral angle, the centrifugal force can be calculated and acted on the total center of mass.The centrifugal inertia force of high-speed machinery is very important in the stress calculation of the structure. The centrifugal inertia force can be loaded according to the radial force F=(2∏n/60)2rp, the direction is radially outward, and the diameter of the middle bolt hole is fixed. There is no other load around the displacement, circumferential displacement and axial displacement.
(3) Due to the error of the axial installation, the diaphragm is bent and deformed along 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.The two middle holes at both ends are used to impose constraints, and the middle hole is used to bear the load.In this way, treat it as a statically determinate simply supported mechanism.
(4) Bending stress caused by angular installation error.It can be solved according to the simplification of the figure below.Due to the actual installation error in the axial angular direction, the diaphragm is periodically bent and deformed along the axial direction, and it is the main reason that determines the fatigue life of the coupling diaphragm.Calculate the displacement of the middle bolt hole in the axial direction caused by the angular deviation. The radial displacement and the axial displacement are fixed.The magnitude of the restoring moment H can be obtained by the angle tilt. Generally, the angular displacement of the coupling diaphragm is very small, so the diaphragm deformation is a small deformation, which can be analyzed by the small deflection bending theory of the thin plate.
Functions: 1. Used to connect shafts and shafts to transmit motion and torque; 2. Compensate the relative displacement of the connected two shafts; installation errors, deformations, and temperature changes of the manufacturing machine-strict alignment cannot be guaranteed. 3. It can be used as a device; 4. Vibration absorption and buffering.
The main products of our company are LMZ-I plum blossom coupling, SL cross slide coupling, LXZ (formerly HLL) pin coupling, JZMJ diaphragm coupling, GCLD drum gear coupling, etc. For products, customers in need can call our hotline: 13673177240 Contact: Manager Qin For more details, please visit our website: www.rigid-flange-coupling.top
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