Idler wheels are non working wheels that have a certain energy storage effect and are helpful for system stability. Idlers are widely used in machinery as they help connect distant shafts. It only changes the steering and cannot change the gear train transmission ratio.
Idler gear refers to a gear that is sandwiched between two gears and engaged with both gears. Its function is only to change the rotational direction relationship between the front and rear gears, without changing the transmission ratio and position.
Tensioning wheels appear in belt or chain drives, and their function is to tension the belt or chain, reduce vibration and energy loss during their movement, and can change position.
The guide wheel, as the name suggests, mainly plays a guiding role. In the design of gear trains, the direction of the belt is relatively complex in order to meet the design requirements and overall dimensions. However, to ensure the design of the idler pulley tensioning wheel and the wrap angle of the belt pulley, the guide wheel needs to be aligned with the design wrap angle in order to achieve the design requirements.