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High-order elliptic bevel gear pair with variable transmission ratios

A variable transmission ratio, elliptical cone technology, applied in the direction of transmission, gear transmission, belt/chain/gear, etc., can solve the problems of not having the general characteristics of other periodic variable ratio transmission, difficult processing, complicated design, etc., to achieve structural The effect of compactness, high transmission efficiency and large carrying capacity

Inactive Publication Date: 2011-02-16
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • High-order elliptic bevel gear pair with variable transmission ratios
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Embodiment Construction

[0032] figure 1 It is the matching diagram of the high-order elliptical bevel gear pair with variable transmission ratio (take the 4th order as an example), as shown in the figure: the high-order elliptical bevel gear pair with variable transmission ratio in this embodiment includes the active elliptical bevel gear 1 and the secondary bevel gear pair that mesh with each other. Driven elliptical bevel gear 2, the active elliptical bevel gear 1 is a high-order elliptical bevel gear, and the driven elliptical bevel gear 2 is a high-order elliptical bevel gear that meshes with the active elliptical bevel gear and has the same order;

[0033] In this embodiment, the sub-cone equation of the active elliptical bevel gear is:

[0034]

[0035] The achieved transmission ratio is:

[0036]

[0037] in: ( ) is the eccentricity of the elliptical bevel gear, ( n ≥2) is the order of the elliptical bevel gear; is the rotation angle of the active elliptical bevel gear; that i...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/14
Inventor 林超侯玉杰龚海
Owner CHONGQING UNIV
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