The problem of the large axial direction of the diaphragm coupling and the type of coupling

Excessive deviation of the half axis of the diaphragm coupling or too large deflection angle will also cause vibration and abnormal noise when the equipment is running; failure of the motor speed code plate will cause the motor speed to be slow and sometimes slow. And make the diaphragm coupling abnormal noise.The connection of the diaphragm coupling is divided into two forms: keyed and non-keyed. The shaft hole of the diaphragm coupling is divided into two forms of cylindrical shaft hole and tapered shaft hole.The assembly of the diaphragm coupling is divided into three forms: dynamic press-in method, temperature difference assembly method and static press-in method.The static press-in method of the diaphragm coupling is based on the required press-in force, using jacks, clamps, or manual assembly.

Diaphragm coupling static press-in method is generally used for tapered shaft holes.Because the static press-in method of the diaphragm coupling is limited by pressure during use, it is difficult to apply pressure to it when the mechanical load is large.What needs to be pointed out is that the static press-in method of the diaphragm coupling may cut off the small uneven peaks between the diaphragm coupling and the shaft during the press-in process, causing it to be destroyed.Therefore, it is recommended to use the other two assembly methods of the diaphragm coupling.The diaphragm coupling relies on the elastic deformation of the diaphragm to compensate for the relative displacement of the two shafts connected. It is a high-performance flexible coupling with good metal components. It does not require lubrication, and has a compact structure, good durability and good service life. Yes, there is no rotation gap, and it is not affected by temperature and oil pollution. It has the characteristics of not afraid of acid and alkali to prevent corrosion. It is suitable for shafting transmission in high temperature and corrosive environment.

The elastic coupling is fixed by screws, and the fixed shaft is locked with a 90° gap between the two positioning screws. The old-fashioned fixing method, because the front end of the screw touches the shaft, it may cause damage to the shaft or difficult to disassemble. .The elastic coupling is fixed with clamping screws, and the tightening force of the hexagon socket bolt is used to shorten the slit and clamp the shaft tightly.This method is convenient for fixing and disassembling, and it will not cause damage to the shaft. It is a very common fixing method.The elastic coupling is fixed by keyway, suitable for high-torque transmission. To avoid axial sliding, it is generally used together with set screw fixation and clamping screw fixation.

The elastic coupling puts the elastic body between the claws to transmit torque. It has radial, axial and angular compensation, and has the characteristics of shock absorption, cushioning, no smoothness, and simple organization.In terms of disassembly, if the conditions permit, the basic type is sufficient. When disassembling, the half coupling must be moved in the axial direction. If the condition does not allow movement, the double flange type can be selected.Some materials of elastomers usually use polyurethane or cast nylon, and choose different ones according to different working conditions. In light industry, textiles, fans, water pumps, etc., when the work is stable and the load changes little, polyurethane can be selected. Two materials Prices vary greatly.

Finding the coupling of lifting parts is an important task in the process of equipment maintenance.Although the principle of aligning is simple, it is practical.The alignment methods often used on small pumps include single-meter method, double-meter method, and three-meter method, etc.No matter which method, there is a common feature; alignment in the horizontal plane is easier to make mistakes than in the vertical plane, with good repeatability, time-consuming, and cumbersome calculations.

The allowable speed range of the coupling is determined by the coupling manufacturer based on the allowable linear speed of different materials of the coupling and the size of the large outer edge.The allowable speed range of couplings of different materials, varieties and specifications is different. Changing the material of the coupling can increase the allowable speed range of the coupling. The allowable speed for steel is greater than the allowable speed for cast iron.The load-bearing capacity of the elastic coupling of the metal elastic element is higher than that of the elastic coupling of the non-metal elastic element; the elastic coupling of the elastic element is higher than the elastic coupling of the elastic element sheared.

Couplings have double-end tooth profile, single-end tooth profile, jaw type, leaf spring type, disc spring, cross slide type and roller chain type.Because of the different types, some are lubricated with lubricating oil, and some are lubricated with grease.The angular compensation of drum-shaped gear couplings is greater than that of straight-tooth couplings. Drum-shaped gear couplings are generally used. Straight-tooth couplings are obsolete products, and those who choose to choose should try not to use them.Coupling is a component that connects two shafts axially and transmits torque and motion. It has the ability to compensate for the offset of the two shafts. In order to reduce the vibration of the mechanical transmission system and reduce the high impact peak load, the coupling should also Has the cushioning and shock absorption performance.The coupling sometimes also has an overload protection function.