High-order elliptic bevel gear pair with variable transmission ratios

Abstract

The invention discloses a high-order elliptic bevel gear pair with variable transmission ratios, which comprises a driving elliptic bevel gear and a driven elliptic bevel gear which are mutually engaged, wherein the driving elliptic bevel gear is a high-order elliptic bevel gear, and the driven elliptic bevel gear is also a high-order elliptic bevel gear which is engaged with the driving elliptic bevel gear and has the same order number as the driving elliptic bevel gear. In the invention, a high-order elliptic bevel gear is obtained by adopting a mode of reducing the rotating angle of the elliptic bevel gear by an integral multiple, i.e. the elliptic bevel gear is correspondingly evolved into a three-order elliptic bevel gear, a four-order elliptic bevel gear, a five-order elliptic bevel gear, ......, and an n-order elliptic bevel gear, and the like; the high-order elliptic bevel gear pairs with the variable transmission ratios combine the advantages of elliptic bevel gear transmission, non-circular gear transmission, and the like, can be used for transmitting nonuniform velocity ratio motions and power between concurrent axes and have the advantages of good dynamic balancing performance, compact structure, large bearing capacity and high transmission efficiency; different orders of the high-order elliptic bevel gear pairs with variable transmission ratios are adopted, the continuous change of a corresponding order number of periods can be realized for the transmission ratio when the gear pair rotates for a circle; and the high-order elliptic bevel gear pair with the variable transmission ratios can be suitable for the occasions of engineering machinery, automobiles, variable pumps, and the like.

Description

technical field [0001] The invention relates to a series of non-circular gear transmission pairs, in particular to a series of variable transmission ratio high-order elliptical bevel gear pairs. Background technique [0002] In the gear pair meshing transmission, the variable transmission ratio transmission is a special gear pair transmission type; to realize the variable transmission ratio gear pair, the pitch curve of at least one gear is a non-circular curve; the variable transmission ratio transmission between parallel shafts is now available For the variable transmission ratio transmission between two intersecting shafts, the design is more complicated and the processing is more difficult, so it is rarely applied in practice. The variable transmission ratio transmission of non-conical gears between intersecting shafts , is a new form of gear transmission that has just entered the research field in recent years. [0003] In the prior art, the research and application of...

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Problems solved by technology

[0002] In the gear pair meshing transmission, the variable transmission ratio transmission is a special gear pair transmission type; to realize the variable transmission ratio gear pair, the pitch curve of at least one gear is a non-circular curve; the variable transmission ratio transmission between parallel shafts is now available For the variable transmission ratio transmission between two intersecting shafts, the design is more complicated and the processing is more difficult, so it is rarely applied in practice. The variable transmission ratio transmission of non-conical gears between intersecting shafts , is a new form of gear transmission that has just entered the research field in recent years

[0003] In the prior art, the research and application of elliptical bevel gear pairs mainly focus on the research of second-order and third-order elliptical bevel gears. The variable transmission ratio limited-slip differential disclosed in Chinese patent CN 1418784 uses elliptical bevel gears. pair, and Chinese patents CN 1648490A and CN 1012813160A respectively disclose the oval bevel gear pair (second-order elliptical bevel gear pair) and three-lobed bevel gear pair (third-order elliptical bevel gear pair), but the problems to be solved are respectively Two-cycle or three-cycle variable ratio transmission does not have the general characteristics of other cycle variable ratio transmissions

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