High-order denatured elliptic bevel gear pair with variable transmission ratio

Abstract

The invention discloses a novel high-order denatured elliptic bevel gear pair with a variable transmission ratio, comprising a driving elliptic bevel gear and a driven elliptic bevel gear in mutual engagement. The driving elliptic bevel gear is a high-order elliptic bevel gear, and the driven elliptic bevel gear is a high-order elliptic bevel gear which is engaged with the driving elliptic bevel gear and is at a different order. in the invention, two elliptic bevel gears with different orders are used for transmission in paired and engaged way; and the bevel gears with different orders are paired according to a required transmission speed, thereby not only realizing the non-uniform speed ratio of crossed shafts, but also improving the transmission ratio of the elliptic bevel gear pair to further realize the aim of increasing or reducing the speed in the transmission process with the variable transmission ratio by the matched transmission between a low-order bevel gear and a high-order bevel gear. The invention not only has the advantages of bevel gear pair transmission, non-round gear pair transmission, and the like, but also can realize the function of rapid or slow transmission to enrich the transmission variety of the elliptic bevel gears to a greater extend.

Description

Technical field [0001] The invention relates to a novel non-circular gear transmission pair, in particular to a high-order modified elliptical bevel gear pair with a variable transmission ratio. 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; for the variable transmission ratio transmission between two intersecting shafts, due to the design It is more complicated and difficult to process, so it is rarely applied in practice. The variable transmission ratio of non-bevel gears between intersecting shafts is a new type of gear transmission. [0003] In the prior art, the research and application of non-bevel gears are mainly in automobile anti-skid differentials. For example, Chinese patent CN 10126595A discloses a variable transmission ratio limited slip different...

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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; for the variable transmission ratio transmission between two intersecting shafts, due to the design It is more complicated and difficult to process, so it is rarely used in practice. The variable transmission ratio transmission of non-conical gears between intersecting shafts belongs to a new type of gear transmission.

[0003] In the prior art, the research and application of non-conical gears are mainly in the anti-skid differential of automobiles, as Chinese patent CN 10126595A discloses a kind of variable transmission ratio limited-slip differential with self-locking function; Chinese patent CN 1648490A and CN 1012813160A discloses an oval bevel gear pair (a second-order elliptical bevel gear pair) and a three-lobed bevel gear pair (a third-order elliptical bevel gear pair); The composition of elliptical bevel gears, that is, the parameters such as the order and eccentricity of the master and slave elliptical bevel gears are the same, which limits the transmission diversity of non-conical bevel gear pairs; and the average transmission ratio of non-conical bevel gear pairs is too small, generally around 1 Fluctuating up and down, the deceleration or speed-up function of variable transmission ratio cannot be realized, which limits the application range of non-conical gear pairs

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