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Reduction gear box of turbine engine

A reduction gear box, turbine engine technology, applied in the direction of engine components, engine lubrication, gear transmission, etc., can solve the journal wear and other problems of the driving gear, to achieve the effect of increasing supporting power, avoiding slipping, and reducing resistance

Active Publication Date: 2017-09-22
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a turbine engine reduction gearbox to solve the technical problem that the journal of the driving gear is seriously worn when the existing reduction gearbox is in operation

Method used

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  • Reduction gear box of turbine engine

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Embodiment Construction

[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0022] refer to figure 1 , the preferred embodiment of the present invention provides a turbine engine reduction gearbox, including the installation casing 10, the installation casing 10 is provided with a drive gear 20 for connecting with the free turbine shaft for input power, and a drive gear 20 meshing with the drive gear 20. The first intermediate gear 30, the second intermediate gear 40 coaxially arranged with the first intermediate gear 30 and fixedly connected to the output end of the first intermediate gear 30, and the output gear meshing with the second intermediate gear 40 to output power outward 50. Drive gear 20 comprises the drive gear shaft 21 that links to each other with the output end of free turbine shaft, and the input end of dr...

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Abstract

The invention discloses a reduction gear box of a turbine engine. The reduction gear box comprises a mounting case, wherein a driving gear which is connected with a free turbine shaft to input power, a first middle gear meshing with the driving gear, a second middle gear which is coaxial with the first middle gear and is fixedly connected with the output end of the first middle gear, and an output gear which meshes with the second middle gear to externally output the power are arranged in the mounting case; the driving gear comprises a driving gear shaft connected with the output end of the free turbine shaft; the input end and the output end of the driving gear shaft are respectively provided with roller bearings with bearing inner rings; and the driving gear shaft is in interference fit with the bearing inner rings of the roller bearings. The roller bearings with the bearing inner rings are selected to support the driving gear shaft of the driving gear; and when a load is too low to drag a retainer and a rolling body, the rotating bearing inner rings can provide proper power to enable the retainer and the rolling body to rotate, so that slipping is avoided.

Description

technical field [0001] The invention relates to the field of aeroengines, in particular to a reduction gearbox for a turbine engine. Background technique [0002] The turbine engine reduction gearbox is located at the rear of the engine, and its function is to reduce the output speed and transmit power forward. The existing turbine engine reduction gearbox is a reduction gearbox composed of two-stage cylindrical helical gears, including driving gears, intermediate gears and output gears. When the reduction gearbox is working, the working environment temperature is high, the transmitted power is large, and the speed is high. When the existing reduction gearbox works, the journal of the driving gear wears seriously, which seriously affects the speed and power transmission of the reduction gearbox, and then affects the handling performance and service efficiency of the aircraft; the intermediate gear and the output gear have low strength, and the reduction gearbox works low se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/22F16H57/023F16H55/17F02C7/06
CPCF02C7/06F16H1/22F16H55/17F16H57/023
Inventor 席莉娅李芝强张丽秀马洪亮张伟
Owner CHINA HANGFA SOUTH IND CO LTD