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Accessory gearbox and integrated gear shaft thereof

A technology of integrating teeth and gearboxes, applied in the field of transmission shafts, can solve the problems of reducing the amount of interference, and achieve the effects of reducing the volume, improving the utilization rate, and improving the reliability of the transmission.

Inactive Publication Date: 2017-08-18
AECC HUNAN AVIATION POWERPLANT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, in the prior art, the bearing inner ring and the accessory gear shaft are usually interference fit, so that the bearing inner ring rotates with the accessory gear shaft. After repeated assembly and disassembly, the interference is easily reduced, resulting in the bearing inner ring and Slip between accessory gear shafts

Method used

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  • Accessory gearbox and integrated gear shaft thereof
  • Accessory gearbox and integrated gear shaft thereof
  • Accessory gearbox and integrated gear shaft thereof

Examples

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Embodiment Construction

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0040] figure 1 It is a partial sectional view of an accessory gearbox shown according to an exemplary embodiment. refer to figure 1 , according to a specific embodiment of the present invention, an accessory gearbox is provided, the accessory gearbox may include a casing body 5, the casing body 5 includes a side wall and an internal cavity formed by the side wall, integrated The gear shaft 6 is rotatably arranged in the in...

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Abstract

The invention discloses an integrated gear shaft and an accessory gearbox. The integrated gear shaft comprises a transmission shaft, a gear and a bearing inner ring. The transmission shaft comprises a cavity communicating with the outside world. The transmission shaft is provided with a key groove and a spline. The gear is concentrically fixed to the transmission shaft. The gear and the transmission shaft are integrally formed. A guide piece is arranged between the end face of the gear and the transmission shaft. The guide piece comprises through holes so that the cavity and the periphery of the gear can communicate. The bearing inner ring and the transmission shaft are integrally formed. The transmission shaft and the bearing inner ring are integrally formed, the overall structure is simplified, and the transmission reliability is improved. Furthermore, the transmission shaft is provided with the key groove and the spline, multiple engine accessories can be integrated on the same transmission shaft, a transmission chain is shortened, and therefore the size of an engine is reduced. On the other hand, the cavity communicating with the outside world is formed in the transmission shaft so that the internal pressure of the accessory gearbox can be regulated. Furthermore, by means of the through holes, oil-gas separation can be conducted in an oil-gas mixture in the accessory gearbox.

Description

technical field [0001] The invention relates to a transmission shaft, in particular to an integrated gear shaft. The invention also relates to an accessory gearbox with such an integrated gear shaft. Background technique [0002] Accessory gearboxes are critical components of aero engines. Accessory gearboxes provide power and mounting locations for the engine or aircraft accessories. In order to reduce the volume of the engine, the windward area of ​​the engine and the weight of the engine, higher requirements are put forward for the accessory gear shaft. It is hoped that one accessory gear shaft can drive multiple accessories or integrate the functions of some accessories. In the prior art, one accessory gear drives one accessory, so that the transmission chain of the accessory transmission is very long, and the transmission chain and accessories are spread out along the radial direction of the engine, which results in a large windward area of ​​the engine and a large nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16C3/02F16H57/04F16H57/021
CPCF16C3/02F16H55/17F16H57/021F16H57/043
Inventor 李陆俊江平王帅肖根升
Owner AECC HUNAN AVIATION POWERPLANT RES INST
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