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Heavy load single waveform generator harmonic reducer with ultrashort designed life

A technology of waveform generator and harmonic reducer, which is applied in the field of aerospace, can solve the problems of reducing the payload of aerospace vehicles, large size of harmonic reducer, redundant service life, etc., and achieves the improvement of radial stiffness and axial The effect of compact layout and high torsional rigidity

Inactive Publication Date: 2018-04-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing harmonic reducer has a large volume, the service life is obviously redundant, and the payload of aerospace vehicles is reduced, a heavy-duty single-waveform generator harmonic reducer with an ultra-short design life is proposed

Method used

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  • Heavy load single waveform generator harmonic reducer with ultrashort designed life

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specific Embodiment approach 1

[0013] Specific implementation mode one: combine figure 1 Describe this embodiment, a heavy-duty single waveform generator harmonic reducer with ultra-short design life described in this embodiment includes a small bevel gear 1, a left housing 2, a feedback shaft 5, a large bevel gear 8, and a wave generator 9. Fixed steel wheel 11, flexible spline 12, output shaft 17 and right end cover 19, small bevel gear 1 is vertically arranged inside the left casing 2, small bevel gear 1 is connected with the motor, and feedback shaft 5 is horizontally arranged on the left casing Inside the body 2, the front end of the feedback shaft 5 is rotationally connected with the left housing 2, the rear end of the feedback shaft 5 is fixed horizontally with the output shaft 17, and the outer side of the output shaft 17 is fitted with a right end cover 19, and the output shaft 17 and the right end cover 19 Rotational connection, the outer side of the feedback shaft 5 is equipped with a large bevel...

specific Embodiment approach 2

[0016] Specific implementation mode two: combination figure 1 Describe this embodiment, the first powder metallurgy bearing 6 is provided between the feedback shaft 5 and the large bevel gear 8 in this embodiment, the second powder metallurgy bearing 3 is provided between the front end of the feedback shaft 5 and the left housing 2, A deep groove ball bearing 15 is provided between the output shaft 17 and the right end cover 19 . Other compositions and connection methods are the same as those in Embodiment 1.

[0017] The feedback shaft 5 and the wave generator assembly are supported by the first powder metallurgy bearing 6, the second powder metallurgy bearing 3 at the front end of the feedback shaft 5 and the deep groove ball bearing 15 on the output shaft 17 serve as the support for the entire harmonic drive system.

specific Embodiment approach 3

[0018] Specific implementation mode three: combination figure 1 This embodiment will be described. The eccentricity between the inner circle and the outer circle of the wave generator 9 in this embodiment is 0.14 mm. Other compositions and connection modes are the same as those in Embodiment 1 or 2.

[0019] In this embodiment, the material of the wave generator 9 is 40Cr, which is an eccentric ring, and the wave generator 9 is installed on the large bevel gear 8 to form an eccentric disc single wave generator assembly.

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Abstract

The invention discloses a heavy load single waveform generator harmonic reducer with ultrashort designed life, relates to the technical field of aerospace, and aims to solve the problems that the existing harmonic reducer is large in size and obviously redundant in service life to reduce the effective load of an aerospace vehicle. The heavy load single waveform generator harmonic reducer comprisesa bevel pinion, a left shell, a resetting shaft, a bevel gear wheel, a wave generator, a fixed steel wheel, a flexible gear, an output shaft and a right end cover, wherein the rear end of the resetting shaft is fixedly connected with the output shaft horizontally; the bevel gear wheel is mounted on the outer side of the resetting shaft in a sleeving manner and is meshed with the bevel pinion; thewave generator is mounted on the outer side of the bevel gear wheel in a sleeving manner and is an eccentric circular ring; the flexible gear is mounted on the outer side of the wave generator in a sleeving manner; and the outer gear of the flexible gear is meshed with the inner gear of the fixed steel wheel and the inner gear of the output shaft. The heavy load single waveform generator harmonicreducer is used for aerospace drive.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a heavy-duty single waveform generator harmonic reducer with an ultra-short design life. Background technique [0002] In the field of aerospace, electric steering gear reducers used in some occasions have high power-to-weight ratio requirements. Many transmission forms currently exist, such as planetary gear transmission, small tooth difference gear transmission, and cycloidal pinwheel transmission. above requirements. However, these transmission types generally have complex structures, many transmission parts, high machining accuracy requirements, low transmission efficiency, and no mature production process, while a single-stage harmonic gear transmission only needs three transmission parts to achieve about 200 The reduction ratio can significantly reduce the size and weight of the transmission components, and then reduce the size of the reducer housing and other component...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H49/00F16H1/32F16H55/06F16H55/10F16H57/021F16H57/023
CPCF16H1/32F16H49/001F16H55/06F16H55/10F16H57/021F16H57/023F16H2001/327F16H2057/02086
Inventor 李跃峰吴贵成张翔李铁明
Owner HARBIN INST OF TECH
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