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Assembly method and device for self-locking nuts between aero-engine air compressor rotor discs

A technology for compressor rotors and aero-engines, which is used in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of delayed delivery of compressor rotors, decreased personnel concentration, bumped ratchet wrenches, etc., and shortens the assembly time. , avoid bumps, improve production efficiency

Inactive Publication Date: 2017-01-04
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to fatigue operation, the concentration of personnel may be reduced, causing the ratchet wrench to damage the center hole of the 6th stage, and it also seriously affects the production cycle, delaying the delivery of the compressor rotor on time

Method used

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  • Assembly method and device for self-locking nuts between aero-engine air compressor rotor discs

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Embodiment

[0024] refer to figure 1 , an assembly device for self-locking nuts between rotor discs of an aero-engine compressor, comprising a pulley drive wrench 6 and a wrench adapter section 8, the pulley drive wrench 6 is placed along the center direction of the fourth-stage disc, and is installed on the fourth-stage The self-locking nut 4 on the disk is located in the pulley drive wrench 6 to ensure that the end of the self-lock nut 4 is close to the inner wall of the pulley drive wrench, and the wrench adapter section 8 is vertically connected with the pulley drive wrench 6 . An observation device is included, the observation device is fixed at a third of the distance from the pulley drive wrench 6 to the self-locking nut, and the probe 7 of the observation device faces the head of the wrench for observation. Butter is smeared on the self-locking nut. The pulley drive wrench 6 is provided with a square hole for connecting the wrench adapter section 8 .

[0025] A method for assemb...

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Abstract

The invention discloses an assembly method and device for self-locking nuts between aero-engine air compressor rotor discs and belongs to the technical field of mechanical assembly. According to the assembly method, a belt wheel is adopted for driving a wrench, and the 40 self-locking nuts are assembled in order under the matching of an observing device, a wrench switching section and the torque wench according to the sequence of 'a cross method'. Through the assembly method provided by the invention, bumping damage to the surfaces of core holes of the air compressor rotor discs can be avoided effectively. What is more, the assembly time is shortened greatly and is 18% of the time used by an existing assembly method, the production efficiency is improved effectively, and thus air compressor rotors can be delivered in time. At the same time, the labor intensity of an operator is also relieved greatly.

Description

technical field [0001] The invention belongs to the technical field of mechanical assembly, and in particular relates to an assembly method and device for a self-locking nut between rotor disks of an aeroengine compressor. Background technique [0002] The connection between the 3rd stage, 4th stage and 5th-6th stage of the compressor rotor assembly of a new type of aero-engine is realized by 40 sets of bolts, circlips and self-locking nuts. When assembling, first fix 40 pieces of bolts on the 3rd-level disc with circlips, then install the 4th-level disc and 5-6 level discs on the rear installation side of the 3rd-level disc in turn, and then install 40 self-locking nuts. The self-locking nut is on a pitch circle with a diameter of about φ500mm, and is closed between the 4th-stage disc and the 5th-stage auxiliary plate. The minimum axial dimension between the discs is 28mm, the diameter of the disc center hole is only φ118mm, and the tightening torque of the self-locking nut...

Claims

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Application Information

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IPC IPC(8): B23P19/06
CPCB23P19/06
Inventor 王满贤庞昕刘丽慧杜煜赵小林董桂丽
Owner AECC AVIATION POWER CO LTD
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