Stepless speed change clutch for dune buggy

Abstract

The invention discloses a stepless speed change clutch for a dune buggy. The stepless speed change clutch comprises a driving wheel assembly, a driving belt and a driven wheel assembly, wherein a sliding block is arranged between a moving wheel and a slope plate, and in contact with and matched with a tapered plane of the slope plate through a semi-cylindrical bulge; a guiding device comprises a radial pin fixedly arranged at the end part of a moving disc, a roller arranged on the radial pin and a guide block arranged on a fixed disc; a spiral guide slope matched with a cylindrical surface of the roller is arranged on the guide block. During the speed change process, the contact part between each semi-cylindrical surface and the tapered plane of the slope plate bears smaller pressure, and the contact frictional resistance is also smaller, so that the sliding block cannot be blocked, and the speed change is stable and smooth; the spiral guide slope can meet the motion trail requirement on the moving disc, so that the pressing force between the moving wheel and the driving belt is smaller, and during the speed change speed, the clutch can ensure that the driving belt is low in abrasion and long in service life.

Description

technical field [0001] The invention relates to a transmission device, in particular to a continuously variable clutch. Background technique [0002] Usually, the continuously variable clutch includes a driving wheel combination, a driven wheel combination and a transmission belt. The driving wheel combination is connected with the engine crankshaft. When the engine crankshaft rotates, the driving wheel drives the driven wheel to rotate through the transmission belt to output power. [0003] Wherein the driving wheel combination includes components such as a driving shaft, a driving disc, a moving wheel, a ramp plate and a roller, the driving disc is fixed on the driving shaft, the moving wheel is slidingly matched with the driving shaft, and the roller is positioned between the moving wheel and the ramping plate. The speed change enables the roller to drive the moving wheel to move axially against the spring thrust under the action of centrifugal force, so as to realize the...

AI Technical Summary

Problems solved by technology

[0008] In view of this, the purpose of the present invention is to provide a continuously variable clutch for beach vehicles, to solve the problem that the existing continuously variable clutch is prone to wheel sticking, poor shifting stability, easy wear of the roller, and combination of driven wheels during the shifting process of the existing continuously variable clutch. The guide device cannot guide the moving plate to move according to the motion trajectory determined by its force law, resulting in serious friction and wear of the transmission belt during the speed change process.

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