Meshing method of movable-tooth gear and variable-diameter continuously variable transmission applying same

Abstract

The invention provides a meshing method of a movable-tooth gear. According to the meshing method of the movable-tooth gear, the movable-tooth gear is meshed with planet shaft teeth or a tooth chain, the movable-tooth gear comprises two movable-tooth gear blocks and a seesaw mechanism, and the seesaw mechanism comprises a T-shaped tooth block base, seesaws, two vertical plates and the like. during engagement of the movable-tooth gear with the shaft teeth or the tooth chain, when interference and tooth crest butting happens to one movable-tooth gear block, the seesaw rotates around the T-shaped tooth block base, so that the other movable-tooth gear block extends upwards and continues to be meshed with the planet shaft teeth or the tooth chain. The invention further discloses a variable-diameter movable-tooth continuously variable transmission applying the meshing method. The variable-diameter movable-tooth continuously variable transmission comprises a power input mechanism, a variable-speed linkage mechanism and a power output mechanism. The transmission mode that a power long shaft connected with a variable-diameter crank rotates to drive the planet shaft teeth to be normally meshed with the variable-diameter gear ring is adopted, large-torque stepless speed change can be achieved, stepless speed change response is fast, slipping, power loss and pause are avoided, smoothness of a CVT gearbox is achieved, and meanwhile the problem of power bottleneck of the CVT gearbox is solved.

Description

technical field [0001] The invention discloses a meshing method of a movable tooth gear, which is an improvement on the existing fixed tooth gear meshing mechanism and meshing method, and also provides a variable-diameter continuously variable transmission applying the method, which belongs to the gear continuously variable transmission mechanism technology field. Background technique [0002] Ordinary gears with fixed gear ratios cannot be used in CVTs to realize gear constant meshing CVT. [0003] The existing AT hydraulic stepless transmission appeared in the United States in the 1930s and 1940s, using a step-by-step multi-speed transmission plus hydraulic variable torque to realize a stepless speed change. In the AT hydraulic continuously variable transmission, the ordinary fixed-tooth gear plays the role of step-by-step speed change, and the rest is realized by hydraulic, hydraulic, electric frequency conversion, and variable resistance to realize stepless speed change...

AI Technical Summary

Problems solved by technology

The thickness, tension and strength of the steel sheet affect the power and life. The chain transmission has a certain range, and there may be certain limitations when the power is high.

[0005] The existing CVT continuously variable transmission is a continuously variable transmission realized by the friction transmission of wheels, belts, chains, etc., and there are problems such as low power and easy "slip" loss of power.

The speed change of electric vehicles is extremely fast, and it is not suitable for CVT. From the initial belt to the current steel belt, the strength and performance have been improved to a certain extent, but the strength and transmission mode directly affect the transmission efficiency and the maximum power is limited.

[0006] The existing pulsating continuously variable transmission uses multiple combinations of connecting rods and one-way clutches to realize continuously variable transmission, but the power is small, the volume is large, the structure is complicated, and it is rarely used in high torque conditions.

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