Multi-row planetary drive continuously-variable transmission

Abstract

A multi-row planetary drive continuously-variable transmission is characterized in that a collector ring composed of multi-row single friction pairs connected in parallel disperses input total power to planet gears for speed and torque conversion and collects the power to a same output shaft, and high-power continuously-variable drive is achieved; the planet gears are tightly held by multiple drive gears to perform multi-point contact force transfer, mandrels are sleeved with the planet gears through inner holes, two ends of every mandrel are linked to a slider and a chuck slide, an inner gear ring and a plane thread thereof rotate relative to a chuck, and the slider with a concentric shaft and the planet gears drive radially for speed regulation; the drive gears and outer pressure rings are provided with double springs for compressing, and a worm gear and a spiral move to increase and decrease compressing force, and constant power drive is ensured. The wedge angle of each planet gear is small, compressing force required by driving is also decreased, efficiency is improved, temperature rise is reduced, and the service lives are prolonged. Centrifugal force generated by the planet gears in cyclic motion is transferred to the mandrel slider, so that the adverse effect of the centrifugal gas is eliminated and high speed is unaffected.

Description

technical field [0001] The utility model relates to a multi-row planetary transmission continuously variable transmission, which has a driving wheel, a planetary wheel, an outer pressure ring, a transmission mechanism of an input shaft and an output shaft, and a speed regulating device and a pressurizing mechanism. [0002] Multiple rows of single-set friction pairs are connected in parallel with multi-point force transmission, and the total power on the input shaft is distributed to many planetary gears for confluence and speed change, and then merged to the same output shaft, realizing high power, constant power, high efficiency and stepless Variable speed transmission. Background technique [0003] The variable speed transmission adopts the friction pair to facilitate the change of the working radius to achieve stepless speed change, and relies on mutual compression to generate friction to transmit torque. Therefore, the allowable contact strength is the main factor limi...

AI Technical Summary

Problems solved by technology

Because the control of speed regulation and pressurization is connected together, especially the original German invention patent (DISO) has the largest pressing force at high speed, which will cause serious heat and wear, and the pressing force will relax at low speed, resulting in insufficient bearing capacity.

[0004] In the field of continuously variable transmission, the imperfect pressurization characteristics are caused by one-way pressurization, and the pressurization force will decrease when it is only pressed on the driving wheel when the speed is adjusted to a low speed; while the centrifugal force will be weakened when it is pressed on the outer pressure ring Clamping of driving wheel to planetary wheel

[0005] In addition, the circular operation of the planetary gear of planetary products will inevitably generate centrifugal force, which is huge at high speed and cannot even bear

The disadvantage of the centrifugal force is that the outer pressure ring should be very loose when clamping the planetary wheel at high speed, but the centrifugal force makes the outer pressure ring clamp the planetary wheel too tightly at the large working radius, the resistance torque is large, and the efficiency is low, so the high speed is limited

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