Novel full-string gear and novel full-string gear set

A string, a new type of technology, applied in the direction of belts/chains/gears, components with teeth, portable lifting devices, etc., can solve the problems of not being able to achieve a continuous and stable state, and achieve good meshing characteristics, strong bearing capacity, and wheels The effect of high tooth strength

Active Publication Date: 2021-01-15
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] According to the above-mentioned technical problem that the entire part of the existing tooth profile is still an involute, its transmission cannot reach a perfect continuous and stable state, and a new type of full-chord gear and its gear set are provided.

Method used

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  • Novel full-string gear and novel full-string gear set
  • Novel full-string gear and novel full-string gear set
  • Novel full-string gear and novel full-string gear set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076]Such asfigure 1 with2As shown, the chord cylindrical gear tooth profile and the chord cylindrical gear tooth profile 2 can adopt any one of the following three curves:

[0077]The parametric equation of the first chord profile in the xoy plane rectangular coordinate system is:

[0078]

[0079]The parametric equation of the second chord tooth profile in the xoy plane rectangular coordinate system is:

[0080]

[0081]

[0082]The parametric equation of the third chord line tooth profile in the xoy plane rectangular coordinate system is:

[0083]In the above formulas: are independent variables, x1, y1 are intermediate variables; a, b, r1, Z1, Z2, and a0 are constant terms, all constant terms are greater than or equal to zero, and Z1 and Z2 are positive integers.

[0084]infigure 1 In, make any normal section α perpendicular to the string cylindrical gear shaft 5 that intersects with the string cylindrical gear, and the tooth profile curve on the section α is one of the above three curves; the string c...

Embodiment 2

[0087]Such asFigure 3-7 As shown, each gear has a total of 49 teeth, the tooth profile curve is the same, the tooth tip expansion line is different, and their tooth profile curve (unit: mm) is specifically:

[0088]

Embodiment 3

[0090]Such asFigure 8-12 As shown, each gear has a total of 50 teeth, the tooth profile curves are the same, and the tooth tip expansion lines are different. Their tooth profile curves (unit: mm) are specifically:

[0091]

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PUM

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Abstract

The invention provides a novel full-string gear and a novel full-string gear set. The novel full-string gear comprises a string cylindrical gear and a string bevel gear, wherein addendum lines of allteeth of the string cylindrical gear are located on the same cylindrical surface, and addendum lines of all teeth of the string bevel gear are located on the same conical surface. Any point on a shaftof the string cylindrical gear or the string bevel gear serves as an axial normal section of the string cylindrical gear or the string bevel gear, the normal section intersects with the string cylindrical gear or the string bevel gear, the boundary formed by all teeth on the normal section is a string tooth profile, the novel string tooth profile is mainly utilized, the string tooth profile is acontinuous closed curve which is periodically distributed in a plane and provided with a plurality of waves, and the novel string tooth profile is flexible and variable in application, wide in coverage range and capable of replacing a full-system involute gear.

Description

Technical field[0001]The present invention relates to the technical field of new-tooth type fixed-tooth gears, in particular, to a novel full-line string gear and a gear set thereof.Background technique[0002]At present, the most commonly used gear tooth profile is involute. Involute gears are easy to design and manufacture, smooth in transmission, and have good interchangeability. However, they also have disadvantages such as low strength and limited carrying capacity, which cannot meet the transmission requirements of some occasions. In order to design and manufacture gears with better performance, people began to change the tooth profile curve and designed arc gears, double arc gears and micro-segment gears. Circular arc gears and double circular arc gears have high tooth profile strength and strong carrying capacity, but the design and manufacture of gears are difficult. Compared with traditional involute gears, the strength and efficiency of micro-segment gears are greatly impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/18F16H55/08
CPCF16H55/08F16H55/18
Inventor 许立忠闫济东李佳怡
Owner YANSHAN UNIV
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