The ratio of performance to price shows that the matching transmission parts of fans are plum blossom coupling, star coupling and diaphragm coupling. The structure of these three series of products is similar to that of star type. The connection mode is the same. There is a polyurethane elastic pad in the middle for connection. The plum blossom coupling and star coupling are composed of two half couplings with claws and elastic elements A quincunx shaped elastic element is placed between the claws of the two half couplings to realize the connection of the two half couplings. When the elastic element of the quincunx elastic coupling is replaced, the two half couplings must move along the axial direction to achieve the purpose of replacing the elastic element. In contrast, the stainless steel diaphragm is connected by the elasticity of the stainless steel sheet, which has good stability. The twisted straight hole bolt is used as the connecting piece, which is obviously different from the stainless steel sheet from the external form, but all of them have shock absorption performance, which meets the requirements of the fan working conditions. The diaphragm coupling is cross connected by several groups of bolts to two groups of diaphragm (stainless steel sheet), and each group of diaphragm is stacked by several pieces The diaphragm is divided into connecting rod type and integral type with different shapes. Diaphragm coupling relies on the elastic deformation of the diaphragm to compensate the relative displacement of the connected two shafts. Diaphragm coupling is a kind of high-performance metal flexible coupling with strong components, no lubrication, compact structure, high strength, long service life, no rotating clearance, no temperature and oil pollution, acid and alkaline corrosion resistance, which is suitable for shafting transmission in high temperature, high speed and corrosive medium environment Move.

When choosing quincunx type coupling, you must choose the appropriate model and specification, which requires that the application function can be brought into full play, and the overall advantage can be presented more strongly. The key is to make the overall buffer and shock absorption function give full play to the maximum profit. Therefore, partners must pay special attention to the following key problem in the whole selection process, so as to confirm The function is more precise.

In order to achieve a stronger practical application effect, when we choose the model and specification, we should also determine whether its function meets the requirements, whether it can exceed the stronger buffer and shock absorption function, and whether the size and installation method match the actual indoor space, which has a good practical significance for selecting the model and specification of the coupling size.

The quincunx elastic element is placed on two half shafts to connect the two half shafts. The utility model can compensate the relative displacement of two shafts, reduce vibration and buffer, has small radial size, simple structure, no need of lubrication, high bearing capacity and convenient maintenance. However, when replacing the elastic element, the two half couplings need to move along the axial direction and fix with positioning screws, also known as claw type coupling, which is composed of two metal claw discs and an elastic body. Bimetallic chuck is generally 45 steel, but when load sensitivity is required, aluminum alloy or stainless steel can also be used.

The number of pieces to be heated and the heating method should be selected according to the site requirements. Common plum pipe joint heating methods include: solid fuel heating, hot dip heating, oxygen acetylene flame heating, blowtorch heating, electric heating, etc. If conditions permit, it can be heated in special electric heating furnace (such as flame heating furnace, salt bath furnace, resistance furnace, etc.). When the site conditions do not allow, simple stoves can be used, and firewood, coke and other solid fuels can be used to heat them. If conditions permit, gas or liquid fuel can be used for injection. Immersion heating is generally only suitable for coupling parts with smaller size (inner diameter less than 100 mm). The method is simple and the heating is uniform. Using oxygen acetylene flame heating method to heat small or large machine parts is simple, but it needs more skilled technology to prevent overheating and burning machine parts. For large size plum coupling, the combination of oxygen acetylene flame heating and blowtorch heating can also be used, and the effect is good. Although electric induction heating method is a better heating method, it is limited in the field installation due to the need for special equipment, but the inductance heating method should be considered.