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Rotary stator precise positioning device and method for bearing large axial load in rotary type

An axial load and precise positioning technology, applied in the direction of workpiece clamping devices, manufacturing tools, etc., can solve the problems of precise positioning and rotor axial bearing difficulties, and achieve good generalization, simple method, and accurate axial position adjustment Effect

Active Publication Date: 2020-01-07
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a rotary-type rotor bearing large axial load precise positioning device and method to solve the problem of difficult precise positioning and axial load bearing of the rotor during the assembly process of the low-pressure turbine unit body

Method used

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  • Rotary stator precise positioning device and method for bearing large axial load in rotary type
  • Rotary stator precise positioning device and method for bearing large axial load in rotary type
  • Rotary stator precise positioning device and method for bearing large axial load in rotary type

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Embodiment approach

[0053] Analysis of precise positioning assembly plan

[0054] (1) Accurate positioning method of rotary stator bearing larger axial load:

[0055] ①Technical requirements: precise positioning of the rotor in the axial direction, bearing the weight of the rotor in the axial direction, and relative rotation of the rotor;

[0056] ②Environmental structure:

[0057] a. The rotor part only exposes the tail section of the low vortex shaft at the bearing casing. The inner hole of the tail section has an annular groove structure and the rear edge is flat.

[0058] b. The bearing housing structure of the load-bearing casing is in radial contact with the bearing to transmit force, so axial positioning and bearing cannot be carried out.

[0059] c. The rear section of the load-bearing casing forms a small-open space conical cavity, and a mounting edge with threaded holes is connected to the load-bearing casing at the bearing seat structure.

[0060] ③Determine the positioning plan;

[0061] The load-...

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Abstract

The invention discloses a rotary stator precise positioning device and method for bearing a large axial load in a rotary type. The rotary stator precise positioning device for bearing the large axialload in the rotary type includes a connection disc structure, an adjusting outer thread sleeve, a driving rod, a first roller pin thrust bearing, a second roller pin thrust bearing, a cylinder body and a fan-shaped body, the connection disc structure includes an internal thread sleeve, the inner thread sleeve is provided with a first through hole which the adjusting outer thread sleeve can penetrate through, the adjusting outer thread sleeve is connected with the inner thread sleeve in a threaded mode and connected with the driving rod through the first roller pin thrust bearing and the secondroller pin thrust bearing which are mounted in opposite directions, and the driving rod is connected with one end of the cylinder body; and the other end of the cylinder body is connected with the big end of the fan-shaped body, and the small end of the fan-shaped body is provided with a boss to be matched with an annular groove in an inner hole of the tail section of a low-pressure turbine shaftelement body. The rotary stator precise positioning device is accurate in positioning, safe and reliable, high in bearing capacity and accurate in adjustment of an axial position.

Description

Technical field [0001] The invention belongs to the field of assembly, and in particular relates to a rotary type accurate positioning device and method for a rotor bearing a large axial load. Background technique [0002] The low-pressure turbine unit body of a certain type of aeroengine includes three parts: a low-pressure turbine rotating and stationary sub-unit body 24, a low-pressure turbine shaft unit body 21 and a low-pressure turbine bearing casing unit body 25. The low-pressure turbine rotor adopts a disc drum structure, the stator casing adopts an integral structure, and the turbine discs at all levels are connected by bolts. According to the structural characteristics of the rotor, the low-pressure turbine rotor and stator unit body adopts the process route of alternating rotor and stator for vertical assembly. The low-pressure turbine shaft unit body is connected with the supporting cone of the rotating stator unit body by precision bolts, and the rear fulcrum bearin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B11/02
CPCB25B11/02
Inventor 蔡鹏虎宋树林马涛黄健崔宝锋丰婷婷焦晓冉
Owner AECC AVIATION POWER CO LTD
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