Quick and easy' Triangle. Work is convenient! ！ Triangle application characteristics, because it is a triangle. Features: 1, simple structure, manufacture, installation accuracy is not high, convenient in operation and maintenance, is suitable for the two axis center office larger occasions 2, smooth transmission, low noise, a buffer suck up with 3, overload, skidding in belt pulley, can prevent damage of weak parts, safety protection role faults: triangle baseline length. When triangle rao bend pulley, the length and width are remain the same level as the neutral layer. Under the regulation of tension, the amount of neutral layer along the triangle to the circumference of the Ld is called a baseline length, also called nominal length. Geometric size calculation and it is mainly used in belt transmission triangle mark, its length is standardized. Most of them adopt ordinary belt core of triangle belt core cord belt core, a small number of USES flaps with core. Because both the two core structure for fibre twisting or compiling, the triangle shear to take each other between the fiber core operation gradually breaking elongation. Therefore, adopting the cord belt core and flaps with core production of ordinary triangle can only be used in low load transmission system