What are the main types of belt drives? What are the characteristics of each?
Synchronous belt drive: he is meshing drive, high speed, high precision, suitable for high-precision instrument device.The characteristics of belt transmission: has the advantages of simple structure, convenient use and maintenance; overload, belt on the belt wheel slip, to avoid damage to other parts, overload protection function; stable operation low noise, small vibration; manufacture and installation of high precision.Disadvantages: because the elastic and frictional force on the drive, so the existence of elastic sliding between the belt and the belt wheel, does not guarantee the accuracy of the transmission ratio; because of the existence of elastic sliding drive, part of power consumption, lower transmission efficiency; short service life; compared with the meshing transmission, tension and pressure on the shaft axis is large, easily damaged; not suitable for high temperature, flammable, explosive, oil pollution places.
The type of belt drive:The common driving types are flat belt drive, V belt drive, multi wedge belt drive and synchronous belt drive.Flat belt transmission is the simplest structure in belt drive, which is suitable for the condition that the center distance is large, but it is not suitable for high-speed transmission.II V belt drive (commonly known as V-belt): V transmission has greater friction, and smooth transmission, wide range of applications.Multi wedge belt drive: it has the advantages of flat belt and V belt. It has good flexibility and large friction force. It is suitable for transferring power with big structure and compact structure.
A: the belt drive is composed of a belt pulley (driven wheel) fixed on the driving shaft, a pulley (driven by a driven wheel) fixed on the driven shaft and a belt which is tightly sheathed on the wheel.
