The characteristics of single diaphragm double diaphragm coupling and how to choose correctly (2)

Select the correct choice of diaphragm coupling: The diaphragm coupling consists of at least one diaphragm and two bushings. The diaphragm is fastened to the bushing with pins that generally do not loosen or cause recoil between the diaphragm and the bushing. Some consumers provide two diaphragms, and there are three diaphragms, with one or two rigid elements in the middle, and both sides are connected to the shaft sleeve. Diaphragm coupling This characteristic is a bit like the bellows coupling, in practice, the coupling transmits torque in a similar way.

Couplings can be divided into rigid couplings and flexible couplings two categories. The rigid coupling does not have the ability to buffer and compensate the relative displacement of the two axes, and asks the two axes to be strict to the center, but this kind of coupling is simple in structure, the construction cost is low, and the installation and disassembly. The maintenance is convenient, which can ensure that the two axes have a high neutral, the transmission torque is large, and the application is common. Commonly used flange coupling, sleeve coupling and clamp coupling.

Flexible couplings can also be divided into non-elastic flexible coupling and flexible coupling with elastic components, the former class only has the ability to compensate the relative displacement of two axes, but can not buffer vibration reduction, common slider coupling, gear coupling, universal coupling and chain coupling; The latter category contains elastic elements, in addition to the ability to compensate the relative displacement of the two axes, but also has a buffer and reduce excitation.

However, due to the limitation of the strength of the elastic components, the transmission torque is generally less than the flexible coupling of the non-elastic components, and the common elastic sleeve pin coupling, elastic pin coupling, plum coupling, tire coupling, snake spring coupling and spring coupling. According to different working conditions, the coupling needs to have the following performance: movable. The movability of the coupling refers to the ability to compensate the relative displacement of the two rotating members.

Factors such as manufacturing and device errors between the connected components, temperature changes during operation and load deformation all require portability. Portability compensates for or relieves additional loads between shafts, bearings, couplings and other components due to relative displacements between rotating members. For places where the regular load starts or the working load changes, the coupling needs to have elastic elements for cushioning and damping to maintain the prime mover and the working machine with little or no damage.