Influencing factors of the service life of diaphragm coupling

Published: 2020-11-06

The diaphragm coupling is composed of several sets of stainless steel diaphragms or thin plates, which are then alternately connected with the two halves of the coupling with bolts.Each group of diaphragms is made up of several pieces. The diaphragms are divided into link type or different shapes of the whole piece type. The diaphragm is fastened to the shaft sleeve with a pin, which generally does not cause looseness or the diaphragm and the shaft sleeve. The recoil between.

Diaphragm couplingThe structure is relatively streamlined, with two half couplings, one set of diaphragms, and several sets of bolts.Among them, the diaphragm is one of the main structures of the diaphragm coupling. However, many people regard the diaphragm as an accessory because the diaphragm is a consumable product.

The bolts, nuts and elastic pads in the diaphragm coupling can be called the accessories of the diaphragm coupling. They are the same as the diaphragm and need to be regularly inspected and replaced.

1. First talk about the diaphragm, because it is made of stainless steel and has good toughness. When it is applied to machinery and equipment, it will be damaged after a long period of use. Many diaphragm couplings can be used for more than 2 years, but Some companies have suffered damage to varying degrees after applying the diaphragm coupling a week later.

The service life of the diaphragm also depends on the working conditions of the specific application, whether the installation is in place, whether the torque is overloaded, etc. These are important factors that affect the service life of the diaphragm.

2. Bolts, nuts and elastic pads will show different conditions of wear, breakage and fall during work and operation, especially the bolts, which will cause the bolts to bend and break due to excessive torque. Common.Like diaphragms, their service life does not have a fixed value, but the general product quality has a promise of quality assurance, which can save you a lot of worries.

1. Before machinery and equipment, clean the end faces of the two shafts of the diaphragm coupling and check the overall coordination conditions such as the key grooves on the end faces.

2. After the diaphragm coupling is installed in the machine and equipment, first work normally for one shift, and then start to check all the screws. If you notice that the screws are loose, you must tighten them. Repeat this for multiple shifts to ensure that they are not Until it comes loose.

3. In order to prevent the fretting wear of the diaphragm during high-speed operation, and further cause the diaphragm bolt hole to show microcracks and damage, the diaphragm can be coated with a solid lubricant such as molybdenum disulfide or the diaphragm A method of anti-friction coating treatment on the surface of the sheet.

4. Long-term overload applications and actual operation risks should be prevented;

5. During the operation, check whether the diaphragm coupling has abnormal phenomena regularly, and repair it in time if any abnormal phenomena occur.

膜片联轴器结构形式：一般分成4孔、6孔、8孔、10孔、12孔等，如需别的孔数可定制。

1. Diaphragm coupling method: continuous multilateral cooperation ring shape, circular ring shape, separated crankshaft shape, spoke shape, formed diaphragm, wave-shaped diaphragm.

2. The elastic diaphragm coupling has the characteristics of continuous multilateral cooperation and circular ring shape: each diaphragm coupling is made of multiple thin and thick diaphragms. The edges of each diaphragm are arc-shaped and have good elasticity and simple appearance. Production and processing, but the elasticity is weak. In addition, the elasticity with a small number of sides is better than that with a large number of sides, but if the number of sides is too small, the reliability is also reduced. Moment.

3. Crankshaft shape characteristics separated by diaphragm coupling: each diaphragm is formed by an independent thin rod to form a polygonal area. The shape of the rod is simple and it is manufactured. However, it is clearly stipulated that the spacing of each hole is accurate, and its performance and continuous performance during work The multilateral cooperation ring is basically the same, but the compressive strength and speed are relatively low, and it is suitable for places where the specifications of the diaphragm coupling are restricted.

4. The characteristics of the spoke shape of the diaphragm coupling: each diaphragm coupling is made up of several pieces, and the wire holes on the edge and the inner edge are respectively connected with the master-slave relationship and the movable half-diaphragm coupling. Distortion occurs, and the formed holes on the diaphragm are used to increase the elasticity, because the elasticity must have an internal and external diameter error that is not suitable for too small, generally it is appropriate to transmit small and medium output power.

5. The characteristics of the diaphragm of the formed diaphragm coupling: each diaphragm coupling is composed of an independent diaphragm, and the thickness of the diaphragm decreases regularly from the inner axis to the outer hyperbola, so as to maintain the equal compressive strength standard. The utilization rate of raw materials is high, which is very suitable for the high-speed transmission system, but the manufacturing precision of the diaphragm is relatively high.

6. The characteristics of the wave-shaped diaphragm: the diaphragm is wave-shaped in the radial cross section, with high elasticity and good compensation performance.The sheet-type hyperbolic type with the same thickness and different thickness of the diaphragm has good performance and is used more at this stage.