Movable teeth quasi-stepless speed change device

Abstract

The invention provides a movable teeth quasi-stepless speed change device, comprising a metal band, a driving shaft and a driven shaft, wherein, the driving shaft and the driven shaft are respectivelyinstalled with a fixed cone disc and a corresponding removable cone disc; the cone disc is provided with two to three groups of equant dovetail grooves which are vertical to the rotating direction; the fixed cone disc and the dovetail grooves on the removable cone disc correspond mutually; more than two movable teeth bodies constitute a movable teeth base; the movable teeth body is provided withdovetail blocks and teeth; the dovetail blocks on the movable teeth body are embedded into dovetail grooves; and when the fixed cone disc and the removable cone disc approach or separate, the two to three groups of equant movable teeth bases glide radially in an equal radius, thus changing the working radius of the movable teeth base, achieving the purpose of speed change, changing the friction transmission to gear transmission, and greatly improving the transmission power, the torsion and the mechanical efficiency. The invention also provides a novel structure of mechanical automatic pressurizing and speed adjusting to substitute the common hydraulic pressurizing system.

Description

technical field [0001] The invention relates to a mechanical speed change device, in particular to a quasi-stepless speed change device with movable teeth. 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, mechanical continuously variable transmissions use a large number of friction transmissions, which require a large normal pressing force, and have 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 transmission ratio is fixed, and th...

AI Technical Summary

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 automobile transmissions, because mechanical continuously variable transmissions use friction transmission in large quantities, they require a large normal pressing force, and have 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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