Lubrication form and working characteristics of diaphragm coupling

Couplings have double-end tooth profile, single-end tooth profile, jaw type, spring leaf type, disc spring, cross slide type and roller chain type. Due to different types, some are lubricated with lubricating oil, there are The ones are lubricated with grease.The main coupling of the steel mill rolling mill refers to the cross slide universal coupling, which is a component of the rolling equipment and has extremely harsh working conditions.The semicircular connecting copper slider will work under severe impact load and pressure (the deflection angle of the connecting rod is often greater than 120), therefore, the plane and arc surface of the slider will be severely worn.

In addition, for flexible and toothed couplings, some are lubricated with grease.That is, when the coupling is working, it can be lubricated by the squeeze of grease.When assembling, it is coated with grease and there is sufficient lubrication inside.The grease used in high-speed devices does not separate the oil and soap under the action of centrifugal force, otherwise the coupling oil leakage will reduce the lubrication effect.At the same time, multi-efficiency is required, that is, heat resistance and cold resistance when working at low temperatures.The lubrication of spring-type couplings mostly uses grease.When assembling, the grease fills the gap between the grids, and the grease is not leaked after being wrapped.Regular inspections are required during work, and extreme pressure lithium grease is generally used for refilling grease.

Diaphragm couplingFeatures at work

1. No lubrication, no maintenance, fundamentally gear coupling, vibration caused by tooth surface wear can avoid a series of troubles such as new imbalance of gear coupling due to oil accumulation;

2. It can be assembled and disassembled without interfering with the master-slave device, and the replacement of the coupling can be completed within 2 hours, which improves the utilization rate of the equipment;

3. It can operate under harsh environmental conditions, can operate within 300°C, and can operate in corrosive environments such as acid, alkali, salt spray, etc.;

4. Withstand the misalignment, with the ability to reduce vibration and noise, the misalignment ability can meet the misalignment requirements of most power transmission devices in operation;

5. Zero clearance, constant low unbalance, and noise-free coupling parts are assembled without gaps, no running noise, and maintain the same initial dynamic balance accuracy;

6. Predictable low additional load is applied to the connected device. Compared with similar flexible transmission elements, the diaphragm coupling exerts a predictable effect on the connected device.Small force and bending moment;

7. With high power-to-mass ratio, it is especially suitable for connecting high-power power devices;

8. The non-linear change of the stiffness between the shafts restricts the drift of the magnetic center of the motor.