Chained oscillating tooth stepless speed change device

Abstract

The invention discloses a chained oscillating tooth stepless speed change device. The chained oscillating tooth stepless speed change device comprises a metal chain, a driving shaft and a driven shaft; a fixed conical disk and a corresponding movable conical disk are arranged on the driving shaft and the driven shaft respectively; three groups of equant dovetail grooves which are perpendicular to a rotation direction are formed on the conical disks respectively; the dovetail grooves on the fixed conical disk correspond to those of the movable conical disk; dovetail blocks on oscillating tooth seats are embedded into the corresponding dovetail grooves on the conical disks; the wedge grove surfaces of each of oscillating tooth bodies and each of the oscillating tooth seats are rubbed and combined through an elastomer and by using an ejector rod and a compression plate so as to finish constant-speed transmission; and when the fixed conical disk and the movable conical disk approach and separate, three groups of equant oscillating tooth seats radially move at equal radii, the working radii of the oscillating tooth seats are changed, simultaneously the elastomer is compressed by a speed regulation plate to separate the oscillating tooth bodies and the oscillating tooth seats, and the oscillating tooth bodies freely move to be meshed with a chain randomly, so that the aim of changing the speed is fulfilled, friction transmission is guaranteed when speed is changed, gear transmission is guaranteed when speed is constant, and transmission power, torque and mechanical efficiency are greatly improved.

Description

technical field [0001] The invention relates to a mechanical speed change device, in particular to a chain-type movable tooth stepless speed change device. Background technique [0002] Mechanical continuously variable transmission is a mechanical transmission device with continuously adjustable transmission ratio. It is widely used in various mechanical equipment because it can adapt to the requirements of changing working conditions or continuous changing speed during the operation of the machine, especially in recent years. For automotive transmissions, because the mechanical continuously variable transmission adopts friction transmission in the whole process of shifting, it requires a large normal pressing force, which has defects such as low mechanical efficiency, small transmission power, and small transmission torque. [0003] Gear transmission has the advantages of large transmission power, large transmission torque, high mechanical efficiency, etc., but the transmis...

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Problems solved by technology

[0002] Mechanical continuously variable transmission is a mechanical transmission device with continuously adjustable transmission ratio. It is widely used in various mechanical equipment because it can adapt to the requirements of changing working conditions or continuous changing speed during the operation of the machine, especially in recent years. For automotive transmissions, because the mechanical continuously variable transmission adopts friction transmission in the whole process of shifting, it requires a large normal pressing force, and has defects such as low mechanical efficiency, small transmission power, and small transmission torque.

[0003] Gear transmission has the advantages of large transmission power, large transmission torque, and high mechanical efficiency, but the transmission ratio is fixed, so it cannot meet the requirements of continuously variable speed

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