Design of Flat belt | DTS | SNS Institutions скачать в хорошем качестве

Design of Flat belt | DTS | SNS Institutions

#snsdesignthinkers #snsinstitutions #designthinking Flat belts are usually made of leather, rubber and fabric. belts made of leather has high coefficient of friction (can transmit more power) thereby ideal for flat belts. To achieve the desired thickness of belt, number of layers of belt material is cemented together.Usually the top and bottom layers are made of leather or rubber which has high coefficient of friction and also it acts as a protective layer. The inside layers are made of canvas, fabric or other material which transmits the majority of the load handled by belt. Number of plies in flat belts (ply) A number of layers of belt material is cemented together to achieve the desired thickness of belt. The layer of belts is called as ply. The total number of belt layers used in a belt is called number of plies. Properties of a flat belt material The material from which belt is made of should have high coefficient of friction. To withstand the tensions created, the belt material should have high tensile strength. When belt passes through pulley bending stress is induced, to avoid this this the material should be flexible and should not be rigid. The material should have water resistance. Advantages of flat belts The efficiency of flat belts in 98%, which is equal to that of gears. They have high load carrying capacity. They can be employed where high operating speed is required. They produce less noise compared to v-belts. They can absorb shock loads compared to v-belts. Disadvantages of flat belts Flat belts can not be operated on small diameter pulleys. If the working environment is corroding the belt life decreases.