The main reason is that the vibration damper of the main engine has sunk, which makes the shafting of the coupling appear asymmetry, thereby increasing the additional torque, which causes the coupling to heat up and break during use. accident.
The plum blossom coupling has many structural forms, a wide range of applications, and a variety of material choices.It is one of the most frequently selected models in the elastic coupling.
For the specific conditions of failure, damage and deformation of the diaphragm coupling of the front pump, the main reasons that may cause the fatigue failure of the diaphragm coupling are summarized by analyzing the cold alignment data during the infrastructure period and the vibration data of the pump operation.
During the service life of the diaphragm coupling, it is necessary to maintain the wedge-shaped clearance surfaces that are inclined to each other, add lubricating oil, and enter the small opening from the large port.The two surfaces have sufficient relative movement speed, the fluid has sufficient viscosity, and sufficient oil is required.
Fix the magnetic fixing seat, the measuring rod and the dial indicator on the couplings of the fixed end and the movable end respectively;
The type of misalignment that the diaphragm coupling can compensate includes the following three basic types: angular (the center lines of the two shafts intersect at the midpoint between the ends of the two shafts at an angle), and transverse (the center lines of the two shafts are offset in parallel) And the axial direction (the axial gap between the two shafts is too large).
Before disassembling the plum blossom coupling, it is necessary to make some marks on the coordinated positions of the various parts of the coupling for reference when reassembling.
The shaft hole and keyway type and size of the coupling, and the marking method meets the requirements of GB/T385217 "Coupling shaft hole and coupling type and size".