Timing belt transmission transmits movement through the meshing of equidistantly distributed transverse teeth on the inner surface of the transmission belt and corresponding tooth grooves on the pulley. Compared with friction-type belt transmission, there is no relative sliding between the pulley and the transmission belt of the timing belt transmission, which can ensure a strict transmission ratio. However, the timing belt drive has higher requirements for center distance and dimensional stability.
1. Rotation ratio is accurate Synchronous belt transmission is a kind of meshing transmission, transmission ratio i=Z2/Z1, although the base of the synchronous belt is polyurethane or rubber, which is elastic, the strong layer that bears the load is made of steel wire and glass fiber material with low elongation. The elongation is extremely small under the action of working tension and variable stress, and the pitch of the timing belt remains unchanged, so that the belt teeth and the timing belt pulley teeth grooves are correctly meshed without losing steps, realizing slip-free synchronous transmission and obtaining accurate transmission Compared with, the transmission efficiency is as high as 98%, and the transmission is stable, with buffer and vibration reduction functions.
2. Compact structure The working force of the synchronous belt drive is the tooth-side meshing transmission force. Compared with the V-belt pulley, the synchronous belt pulley diameter is much smaller and does not require a large tension. The transmission pressure of the synchronousbelt wheel shaft is smaller, so that the diameter of the synchronousbelt wheel shaft and the rolling bearing can be smaller also, so the synchronous belt transmission has a more compact structure.
3. Adapt to harsh working conditions In severe working conditions with corrosive media and water leakage, the chain is prone to rust, abrasion, and corrosion; V-belt drive will slip due to the reduced friction coefficient. However, the synchronous belt transmission is meshing transmission, which does not slip, and the water lubricates the rubber, which reduces the friction loss of the synchronous belt. When there is dust and impurities, when the belt teeth of the timing belt enter the groove of the synchronousbelt wheel, the belt teeth squeeze the air in the synchronous belt wheel groove, so that the squeezed air is discharged to both sides of the timing belt wheel groove. This air squeezes The pressure will take away the dust and impurities and clean the meshing surface, which can reduce the friction loss of the timing belt.