Flexible Coupling a New Approach

This paper presents the concept of flexible type of coupling for power transmission in light load conditions. In some cases of power transmission due to manufacturing limitations and/or misalignment at the time of installation, coupling may fail. It is observed that in power transmission flexible links are used in the form of belt loops. In such a design, belt subjects to shear failure. In present study belts are so mounted on flanges that it subjects to tensile load. In general it is observed that the strength of material is higher in tension than shear. In previous design of flexible couplings more axial space and material is required than the present design. For present coupling various types of belts are to be used as a flexible link in between two shafts. Various belts are selected and tested for coupling design; with this data of belt testing a flexible coupling is designed. Due to modifications in design and material selection 20 % weight reduction is achieved .This weight reduction not only reduces cost of coupling but will reduces installation and vibration problems. Radial distance also decreases by 25%.Connecting two flanges belt as a flexible element is used which reduces noise during power transmission. It will be used for single cylinder four stroke engines having rated power of 2.28 kW at 3600 rpm. This set up is being used for I.C. Engine lab. The concept originates due to frequent failure of rigid flange coupling. Keyword: flexible Coupling, belt, weight reduction, misalignment, light load