Coaxial contrarotating speed reducer

A rotating reducer and coaxial technology, applied in the field of coaxial counter-rotating high-speed composite gear train reducer, can solve the problems of small deceleration range, small single-stage deceleration, large volume, etc., and achieve the effect of stable operation and large transmission torque

Inactive Publication Date: 2017-05-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the patent 101021245A "coaxial counter-rotating high-speed planetary gear transmission", a compound planetary reduction gear with single input and double output is disclosed. The motor drive scheme and the bevel gear shunt drive scheme have the disadvantages of large volume and heavy mass; however, the single-stage reduction ratio of the compound planetary reduction device is small, which is not suitable for matching the huge speed difference between the high-speed engine and the propeller, and the applicable reduction range is relatively small. Small

Method used

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  • Coaxial contrarotating speed reducer
  • Coaxial contrarotating speed reducer
  • Coaxial contrarotating speed reducer

Examples

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Embodiment Construction

[0024] This implementation example is a coaxial counter-rotating reducer.

[0025] refer to Figure 1 to Figure 7 , The coaxial counter-rotating reducer of this implementation example consists of a box body 13, a front end cover 1, a rear end cover 12, an input shaft 3, a first-stage inner ring gear 2, a second-stage inner ring gear 9, and a second-stage double-connected inner ring gear 10 , first-level planetary gear 5, second-level double-connected planetary gear 7, planetary carrier 6, first-level center wheel 4, second-level double-connection center wheel 18, second-level fixed shaft gear 16, second-level sun gear 17, output inner shaft 14 , the output outer shaft 15, the first ball assembly 8, and the second ball assembly 11; the two ends of the box body 13 are respectively connected with the front end cover 1 and the rear end cover 12 by bolts. The input shaft 3 is installed on the front end cover 1 and the secondary inner ring gear 9 of the box body through bearings, a...

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Abstract

The invention discloses a coaxial contrarotating speed reducer. A first-level planetary gear train is used for speed reduction, and two inner gear rings of a second-level composite differential gear train are used for realizing speed reduction and a constant speed output function of coaxial contrarotating. A first-level planetary gear is simultaneously engaged with a first-level center gear and a first-level inner gear ring to form a first-level speed reduction system; a second double planetary gear, a second-level double center gear, a second-level inner gear ring, a second-level double inner gear ring, a second-level fixed shaft gear and a second-level sun gear form a second-level coaxial contrarotating speed reduction system. The first-level center gear and the second-level double center gear are separately fixed to an input shaft. An output shaft is divided into an output inner shaft and an output outer shaft, the output inner shaft penetrates through the output outer shaft, and the inner and outer shafts are connected with an output optical axis. The second-level inner gear ring is fixedly connected with the output inner shaft to complete the positive output of the system; and the second-level double inner gear ring, the second-level fixed shaft gear and the second-level sun gear are fixedly connected with the output outer shaft to complete the negative output of the system. The speed reducer has the advantages of simple structure, high speed reduction ratio, large transmission torque and smooth operation.

Description

technical field [0001] The invention relates to a gear transmission reduction device, in particular to a single-input and double-output coaxial counter-rotating high-speed compound gear train reducer. Background technique [0002] Some large transport aircraft need to be equipped with a double-row propeller propulsion system; in order to improve fuel efficiency and ensure that the double-row propellers have the same speed and torque, the propulsion system often adopts a counter-rotating design for the double-row propellers. The planetary gear train has the characteristics of power split transmission, which is especially suitable for high-speed and heavy-duty equipment, and has been widely used in many industrial fields such as aviation and ships. The path of planetary gear transmission is from the input of the sun gear to the output of the planetary carrier through the planetary gears, relying on multiple planetary gears to realize the power split transmission of the gear tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/32
CPCF16H1/32F16H1/2809F16H2001/289F16H2001/327
Inventor 王三民李浩郑维彤刑天倚裴安黄雄颉晓欣
Owner NORTHWESTERN POLYTECHNICAL UNIV
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