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Adsorption transmission-based transmission method for aerospace

A planetary gear, sun gear technology, applied in transmission, electric brake/clutch, electric components, etc., can solve the problems of mechanical fatigue, high processing cost of spiral bevel gear, friction loss, etc., achieve high speed and angular acceleration, realize The effect of light weight, strong bearing capacity and longevity

Active Publication Date: 2020-02-28
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the different types of transmission mechanisms, the current aerospace precision transmission mechanisms include screw transmission and gear transmission. Mechanical gear transmission is widely used in various fields of society due to its stable transmission ratio and large transferable torque. Due to processing and installation errors, Mechanical straight and helical bevel gears have relatively large vibration and noise in transmission, while spiral bevel gears have high transmission accuracy but high processing costs and expensive prices
Moreover, mechanical bevel gears rely on the meshing between teeth to transmit torque, which brings irreversible problems to gear transmission, such as mechanical fatigue, friction loss, lubrication pollution, large vibration and noise, etc.

Method used

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  • Adsorption transmission-based transmission method for aerospace
  • Adsorption transmission-based transmission method for aerospace
  • Adsorption transmission-based transmission method for aerospace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 Shown, a kind of transmission method that is used for aerospace based on adsorption transmission, comprises the following steps:

[0047]S1. Select a suitable planetary gear set, paste suitable permanent magnets on the outer surface of the sun gear and planetary gear of the planetary gear set, and paste suitable permanent magnets on the inner surface of the inner ring gear. The magnetic pole pairs of the permanent magnets are It is composed of N-level magnetic pieces and S-level magnetic pieces evenly spaced. The permanent magnet is made of NdFeB permanent magnet material. The permanent magnet adopts radial magnetization. The planetary gear is fixed by the planetary carrier. Coaxial installation, the sun gear and the planetary gear are external meshing structures, the external meshing gears of the sun gear and the planetary gears rotate in opposite directions, the planetary gears and the ring gear are internal meshing gear structures, and the internal m...

Embodiment 2

[0052] Such as Figure 2-4 Shown is a transmission method for aerospace based on adsorption transmission, the transmission mechanism used includes a planetary gear set and a ball screw pair, the ball screw pair is connected to the planetary gear set, the planetary gear set and the ball screw The pairs are arranged in a straight line. The planetary gear set includes a sun gear, a planetary gear, an inner ring gear and a permanent magnet. On the contrary, the planetary gear and the ring gear have a ring gear structure, the rotation direction of the ring gear of the planetary gear and the ring gear is the same, and the sun gear and the ring gear are coaxially arranged.

[0053] The permanent magnets include a radially magnetized first permanent magnet, a second permanent magnet and a third permanent magnet, the outer surface of the sun gear is provided with the first permanent magnet, and the outer surface of the planetary gear is provided with the second permanent magnet , the ...

Embodiment 3

[0055] Sun gear pole pair number P 1 , Planetary gear pole pair number P 2 and the number of pole pairs of the inner ring gear P 3 Satisfied:P 1 +2P 2 =P 3 .

[0056] Sun gear angular velocity ω 1 , planet carrier angular velocity ω 4 and the angular velocity of the ring gear ω 3 satisfy:

[0057] When the sun gear and the ring gear are used as the input end, and the planet carrier is used as the output end, the input power F of the sun gear 1 , The input power F of the ring gear 2 and the output power F of the planet carrier 3 Meet: F 3 =F 1 +F 2 .

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Abstract

The invention relates to an adsorption transmission-based transmission method for aerospace. The transmission method comprises the following steps: S1, selecting an adaptive planetary gear set, bonding an adaptive permanent magnet to the planetary gear set, and fixing a planetary gear through a planetary carrier; S2, selecting any two of a sun wheel, the planetary carrier and an inner gear ring ofthe planetary gear set to serve as an input end, selecting another one as an output end, connecting the input end to a driving system, and connecting the output end to an input end of a ball screw; S3, realizing non-contact transmission between different magnetic gears which act mutually through magnetic coupling of an N pole and an S pole; and S4, making the ball screw achieve different transmission ratios under the driving of the output end, converting the torque of an output end into linear motion, and transferring the linear motion to an operating mechanism to complete the connection between a power system and the operating mechanism. According to the transmission mechanism provided by the invention, the torque is transferred by the magnetic pulling force formed by coupling a plurality of magnetic fields, and small size and light weight of the transmission mechanism are realized.

Description

technical field [0001] The invention belongs to the technical field of transmission mechanisms, and in particular relates to a transmission method for aerospace based on adsorption transmission. Background technique [0002] As the link between the power system and the working mechanism, the transmission mechanism is widely used in various types of aerospace vehicles. As the basic core components of major aerospace equipment, there is still a large gap between the performance of my country's aerospace transmission mechanisms and foreign products, and there are still technical bottlenecks that restrict development. Due to the application of a large number of precision transmission mechanisms in aerospace equipment, these devices The performance of aerospace equipment directly determines the working performance of aerospace equipment. Therefore, the development of the design and manufacturing technology of aerospace precision transmission mechanisms marks the development level ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/22H02K49/10
CPCF16H25/2204H02K49/102
Inventor 王志坚王俊元杜文华曾志强王日俊张纪平党长营
Owner ZHONGBEI UNIV
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