How to choose the elastic coupling correctly

　　1. The use of expansion sleeves makes the manufacture and installation of the host parts very simple.The processing of the shaft and the hole with the expansion sleeve does not require high-precision manufacturing tolerances like the interference fit.The installation of the expansion sleeve does not require heating, cooling or pressurizing equipment, as long as the bolts are tightened according to the required torque.Moreover, the adjustment is convenient, and the hub can be easily adjusted to the required position on the shaft.Bulging sleeves can also be used to connect parts with poor weldability.

　　2. The service life of the sleeve is longer than the service life and the strength is high.The expansion sleeve relies on friction transmission, does not weaken, does not move relative, and does not wear during work.

　　3. When the expansion sleeve is overloaded, the connection function will be lost to protect the equipment from damage.

　　4. The elastic coupling can bear a variety of loads, and its structure is diverse.According to the size of the installation load, multiple expansion sleeves can also be used in series.

　　5. The expansion sleeve is easy to disassemble and assemble, and has good interchangeability.Since the expansion sleeve can be combined with a larger joint axle, loosening the bolts during disassembly can make the connecting parts easy to disassemble.When swelling and tightening, the contact surface is close, easy to adhere, no rust, and easy to open.

　　1. Gear couplings are optional for high-power and heavy objects.The coupling has good bearing capacity, large elasticity and is not easy to be damaged.

　　2. The requirements for the number of revolutions of the elastic coupling are relatively accurate, and the requirements for the balance force are relatively high.You can choose the diaphragm coupling, and the precision of the diaphragm coupling is relatively high.

　　three.If you want to consider cost, installation and operation, you can choose a plum-shaped elastic coupling.The plum-shaped elastic coupling has simple structure, convenient operation, convenient installation, low cost and convenient maintenance.

　　Classification and use of elastic couplers:

　　Elastic couplings are divided into metal elastic couplings and non-metal elastic couplings. Metal elastic couplings can be divided into diaphragm couplings, roller chain couplings, serpentine couplings, bellows couplings ; Non-metal elastic couplings can be divided into star-shaped elastic couplings, plum-shaped elastic couplings, elastic sleeve pin couplings, and tire couplings.Botou Tianda Coupling introduces the characteristics and applications of several commonly used elastic couplings to users.

　　Plums: Plums are made by turning, grinding and sanding, and are heat treated as a whole.In order to ensure sufficient mechanical strength, there is also a sub-disk that can be mass-produced without processing loss.So the price is much lower than machine processing.But the casting performance is not very good.Don't use it in some important occasions.However, the cast tooth is prone to hitting the tooth (secondary tooth) under high speed or high load.Rubber products are usually made of engineering plastics or rubber.The life of the coupling is also called the elastic life.Because elasticity is under pressure, it is obviously pulled out.The general's life span is 10 years.Since elasticity has the effect of re-vibration and damping, it is used under strong vibration conditions.The performance temperature determines the working temperature of the coupling, and its working temperature is generally between -35 and 80 degrees.

　　Diaphragm elastic couplings are widely used in shaft transmission of various mechanical devices, such as pumps (especially high-power, chemical pumps), fans, compressors, hydraulic machinery, petroleum machinery, printing machinery, textile machinery, chemical machinery, mining Machinery, metallurgical machinery, aviation (helicopter), ship high-speed power transmission systems, steam turbines, piston-type power mechanical transmission systems, crawler vehicles, and high-speed, high-power mechanical transmission systems of generator sets.Transmission shafting is becoming more and more common.

　　Diaphragm coupling: It is composed of several groups of diaphragms (stainless steel plates), which are staggered with two half couplings by bolts.Each diaphragm is composed of multiple overlapping diaphragms.The partitions are divided into connecting rods and integral partitions of different shapes.The diaphragm coupling compensates the relative displacement of the two shafts through the elastic deformation of the diaphragm.It is a high-performance flexible coupling with strong metal parts.No need for lubrication, compact structure, high strength, long service life, no rotation gap, and not affected by temperature and oil pollution.It has the characteristics of acid resistance, alkali resistance and corrosion resistance.Suitable for working environment with high temperature, high speed and corrosive medium.driver.

　　As long as you pay attention to the above-mentioned aspects when buying couplers, you can buy good couplers so that you can use them more easily.