Suspension structure between aero-engine and external accessory case

A technology for aero-engines and accessory casings, which is applied to the layout/installation of aircraft parts, power units, and power plant construction, etc. The effect of reducing the number of degrees of freedom

Active Publication Date: 2022-07-15
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the existing scheme, the engine can generate a certain amount of rotational movement around the axis of the engine, which is used to realize the position compensation between the engine and the accessory casing during installation and relative movement; due to the action of the joint bearing, the engine will also generate Directional play (the axial play mentioned in this application refers to the play caused by the swing of the engine around the direction perpendicular to the axis of the engine). The existing scheme uses two joint bearings to make the engine move in the direction of its axis ( The direction perpendicular to the paper surface) has a large degree of freedom, so its movement is large

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  • Suspension structure between aero-engine and external accessory case
  • Suspension structure between aero-engine and external accessory case

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Embodiment Construction

[0020] In order to make the implementation purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements or elements having the same or similar functions. The described embodiments are some, but not all, of the embodiments of the present application. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application. Th...

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Abstract

The application discloses a suspension structure between an aero-engine and an external accessory casing, which belongs to the technical field of aero-engine suspension system design. The device comprises an upper lifting lug (13), which is fixedly connected with the accessory casing (11), and a through hole is designed on the upper lifting lug (13); In the through hole of the upper lifting lug (13), the other end is rotatably connected to the lower lifting lug (17); the lower lifting lug (17) is fixedly connected to the engine installation side (1). One end of the lifting lug pin of the hanging structure is installed with the joint bearing, which can meet the relative position compensation requirements between the engine and the accessory casing; there is only one set of joint bearing structure, which reduces the number of degrees of freedom of the hanging structure, Therefore, the amount of movement of the engine along the axis direction is reduced, and the other end of the pin shaft of the lifting lug is connected with the upper lifting lug by using a longer matching surface, thereby ensuring the connection stability and reliability of the hanging structure.

Description

technical field [0001] The present application belongs to the technical field of aero-engine suspension system design, and in particular relates to a suspension structure between an aero-engine and an external accessory casing. Background technique [0002] Aero-engine is the heart of the aircraft, its working conditions are complex and its reliability is high. The accessory casing is one of the important parts of the aero-engine, responsible for driving and installing the engine accessories and the fly-attached casing. It is the medium through which the engine accessories and aircraft accessories obtain power from the engine main shaft. The accessory casing is generally installed outside the engine, and there are a series of transmission gears (shafts) inside the casing. The engine and the accessory casing are connected by a hanging structure. Therefore, the stability and reliability of the suspension structure affect the overall operation safety of the engine. [0003] U...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D27/26B64D27/00
CPCB64D27/00B64D27/26
Inventor 滕文爽杨荣陈聪慧胡兴海何斌李锦花
Owner AECC SHENYANG ENGINE RES INST
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