Longitudinal shaft type planetary friction mechanical stepless speed changer and gear ring

Abstract

The invention discloses a longitudinal shaft type planetary friction mechanical stepless speed changer and a gear ring. The longitudinal shaft type planetary friction mechanical stepless speed changer is characterized in that planetary shafts (5) of the speed changer are longitudinally arranged, and in other words, the central axes of the planetary shafts (5) are perpendicular to the central axis of a sun friction gear (3); the sun friction gear (3) and planetary friction gears (4) can axially move; contact surfaces of the planetary friction gears (4) comprise ellipsoidal surfaces and top planes (12), and a contact surface of the sun friction gear (3) comprises an ellipsoidal surface and a bottom cylindrical surface (13); each of a planetary carrier (6) and the gear ring (8) has two degrees of freedom, is connected with an output device when in one degree of freedom and is connected with a speed changer shell (1) when in the other degree of freedom. The sun friction gear (3) only can revolve when located at the axis positions of the planetary friction gears (4). The longitudinal shaft type planetary friction mechanical stepless speed changer and the gear ring have the advantages that the speed changer is simple in structure, low in cost, wide in speed changing range and high in transmission efficiency; the gear ring is provided with side teeth, and accordingly gears which are meshed with the side teeth of the gear ring can axially move without affecting running.

Description

technical field [0001] The invention belongs to the field of transmission, in particular to a mechanical stepless transmission. Background technique [0002] The current mechanical CVTs mainly include metal belt CVTs, friction planetary CVTs, friction disc CVTs, etc., but these transmissions are either complex in structure, high in cost, or have a small shift range and poor carrying capacity. Contents of the invention [0003] In order to solve the problems of the existing mechanical continuously variable transmission such as complicated structure, high cost and small speed change range, the present invention provides a mechanical continuously variable transmission. The utility model has the advantages of simple structure, low cost, large speed change range, strong bearing capacity and high transmission efficiency. [0004] The transmission is realized in the following way: it includes sun friction wheel (3), planetary friction wheel (4), planetary shaft (5), planetary ca...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of existing mechanical continuously variable transmissions such as complex structure, high cost and small speed range, the present invention provides a mechanical continuously variable transmission

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