A silent chain for cvt gearbox

Abstract

The invention relates to a silent chain for a CVT gearbox, which comprises a chain plate, a bent pin shaft and a short pin shaft. The chain plate is provided with a through hole, and a group of pin shafts are interspersed at both ends of the through hole. , each group of pins includes a curved pin and a short pin, the curved pin and the short pin are attached to each other, and the side of the attached side forms a rolling surface, and one end of the curved pin Bending, both ends of the bent pin have arc surfaces, the inclination angle of the arc surface at the bent end of the bent pin is 17° to 23°, and the inclination angle of the arc surface at the straight end of the bent pin is 1° ~3°, and the radius of curvature of the arc surface at the bent end is 100-170mm, and the radius of curvature of the arc surface at the straight end is 150-200mm. The invention has the beneficial effects of low noise and can reduce the volume of the CVT gearbox.

Description

technical field

[0001] The invention belongs to the field of drive chains, in particular to a silent chain used for a CVT gearbox. Background technique

[0002] For a long time, the key components of known CVT transmissions are chains or steel belts, and the end surfaces on both sides of the chains and steel belts are symmetrical relative to the center. The chain is composed of one or more chain plates, and its pitch is one or two pitches, and the length of the chain is arranged in an orderly manner to match the transmission ratio and center distance of the gearbox. The pin shaft is a non-circular intended pin shaft, which is positioned on the side of the positioning hole of the chain plate. There are four pin shafts in each chain plate hole, and a pair of two pins form a hinge pair where the two pin shafts roll against each other, so as to achieve durability. Grinding and noise effects. The two ends of the pin shaft are symmetrical arc surfaces, and the arc surfaces are f...

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