Mounting and dismounting method of the outer ring of the intermediate bearing on the double-rotor test bench of the aero-engine

Abstract

The invention belongs to the field of machining and tools and relates to an aircraft engine double-rotor test bed intermediate bearing outer ring assembling and disassembling method. According to the method, a whole assembling and disassembling device is driven to run through a servo motor and belt transmission; electric energy is converted into mechanical energy through the assembling and disassembling device, and an intermediate bearing outer ring is pressed into or pushed out of a transition shaft matched with the bearing outer ring; and the whole assembling and disassembling process is performed on the assembling and disassembling device fixed to the ground. Firstly, the special assembling and disassembling device is erected; then, the intermediate bearing outer ring is installed; and finally, when the intermediate bearing outer ring 20 needs to be replaced, the intermediate bearing outer ring is disassembled. According to the method, when the structure and the performance of an intermediate bearing are not damaged, one device is adopted to finish assembling and disassembling the intermediate bearing outer ring, and the tedious device replacing steps are avoided; and meanwhile, a motor is adopted for driving, the installing accuracy is improved, and manpower is saved.

Description

technical field [0001] The invention belongs to the field of mechanical processing and tools, and relates to a method for loading and unloading an outer ring of an intermediate bearing of an aero-engine double-rotor test bench. Background technique [0002] Intermediate bearings are important parts in aero-engines. One of the purposes of the aero-engine dual-rotor test bench is to simulate the operation of the intermediate bearing under actual working conditions, and to perform fault diagnosis and life prediction on it. The intermediary bearing can achieve relative rotation in the same direction or in the opposite direction. The inner diameter of the inner ring is in interference connection with the low-pressure shaft of the aeroengine and rotates synchronously with the low-pressure shaft; the outer diameter of the outer ring is in interference connection with the inner ring of the transitional hollow shaft, and is connected to the The high-voltage shaft is fixedly connecte...

AI Technical Summary

Problems solved by technology

Due to the particularity of the intermediate bearing, the inner ring and the outer ring need to be assembled and disassembled separately, so the rolling body is directly exposed to the outside. In order to avoid deformation or wear of the rolling body of the intermediate bearing due to the extrusion of the loading and unloading tool and to ensure the stability of the loading and unloading process, this method cannot be used. method for loading and unloading

Zhou Guoliang et al.’s patent "a convenient bearing dismounting device", patent No. ZL 201620227352.5, uses manual loading and unloading method, which is time-consuming and laborious, and is not suitable for loading and unloading structures and large-sized bearings

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