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An aero-engine central transmission device fulcrum main bearing installation tool

An aero-engine and transmission technology, applied in shaft installation, bearing assembly, bearing and other directions, can solve problems such as the quality of balls falling on the ground, ball scratches, problems, etc., to reduce labor intensity, meet use requirements, improve The effect of work efficiency

Active Publication Date: 2020-02-18
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it will cause the ball to scratch or the ball will slip and fall on the ground, resulting in quality problems

Method used

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  • An aero-engine central transmission device fulcrum main bearing installation tool
  • An aero-engine central transmission device fulcrum main bearing installation tool
  • An aero-engine central transmission device fulcrum main bearing installation tool

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Embodiment Construction

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings, but the scope of protection is not limited to the description.

[0021] The design of the installation tool for the fulcrum main bearing of the central transmission of the aeroengine includes the following steps:

[0022] 1. Analysis of working principle.

[0023] From figure 1 and figure 2 It can be seen that the fulcrum main bearing installation process. First, determine the installation thickness of the adjustment pad 26; secondly, install the adjustment pad 26 and the upper half inner ring 25 of the fulcrum main bearing on the active bevel gear 27 by heating and pressing; again make the upper half of the fulcrum main bearing of the installed active bevel gear assembly The inner ring 25 ball track is upward; then three people cooperate and one person holds the central transmission device fulcrum main bearing. The fulcrum main bearing cage 23 ...

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Abstract

The invention discloses an aero-engine center transmission device fulcrum main bearing installation tool. The installation tool comprises a hollow stepped cylindrical fulcrum main bearing mounting base (1). A first cylindrical step (11) and a fourth cylindrical step (14) are sequentially arranged in the axial direction of the fulcrum main bearing mounting base (1), and the outer diameters of the first cylindrical step (11) and the fourth cylindrical step (14) decrease progressively. Screw holes are uniformly distributed in the end face of the first cylindrical step (11). A roll ball rail is arranged on the outer side of the end face of the fourth cylindrical step (14) in the circumferential direction. The cylindrical surface of the fourth cylindrical step (14) is provided with a notch. A detachable check block (22) is arranged in the notch. By adopting the aero-engine center transmission device fulcrum main bearing installation tool, a bearing retainer and roll balls can be rapidly, accurately, efficiently, stably and fixedly mounted on an outer ring of a fulcrum main bearing; the working efficiency of assembling upper and lower inner semi-rings and a driving bevel gear assembly is improved; the assembly quality is improved; the labor intensity of workers is substantially reduced; and the use requirements are met well.

Description

technical field [0001] The invention relates to a tool for installing a fulcrum main bearing of an aero-engine central transmission device, and belongs to the technical field of mechanical manufacturing. Background technique [0002] During the assembly process of the fulcrum main bearing of the central transmission device of the aero-engine, it is necessary to assemble the fulcrum main bearing outer ring, bearing cage, ball, upper and lower half inner rings, driving bevel gear, adjustment pad and other components (such as figure 1 shown). When installing the fulcrum main bearing, first determine the installation thickness of the adjustment pad; secondly, install the adjustment pad and the upper half inner ring on the (hot-pressed) driving bevel gear; and then make the installed upper half inner ring of the driving bevel gear assembly Place the ball track upwards; then install the outer ring of the fulcrum main bearing, bearing cage, and balls in sequence; finally assemble ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C43/04F16C43/06
CPCF16C43/04F16C43/065F16C2226/12
Inventor 徐勇刚王勇肖杰吴永红李平韩伟袁爱霞叶春丽罗祖明
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD