Aircraft engine spindle bearing testing machine

Abstract

The invention belongs to the aircraft bearing detecting technology and provides an aircraft engine spindle bearing testing machine. a testing mechanism of the aircraft engine spindle bearing testing machine mainly comprises a cantilever supporting mechanism of a testing bearing (15), axial and radial loading mechanisms, a driving mechanism, a transmission mechanism and a heating device (23) as well as a detecting and collecting device, wherein the axial and radial loading mechanisms are used for applying changing torque and size alternation to the testing bearing (15); the heating device (23) is used for heating the testing bearing (15); two types of transmission shafts (5) are arranged; and one type of the transmission shafts is used for testing low load and high rotation speed of the testing bearing while the other type is a fixed structure used for testing bearings with diameters of more than 100 mm and bearings with rotation speeds of less than 25000 rpm in the testing bearings. According to the invention, through three groups of transmission shafts of two sets of testing mechanisms, the testing range of the testing bearing of the testing machine is enlarged.

Description

technical field [0001] The invention belongs to the detection technology of aviation bearings, and mainly relates to a testing machine for main shaft bearings of aviation engines. technical background [0002] The main shaft bearing of the aero-engine is an important transmission component of the aero-engine. With the development of the aviation industry, the main shaft bearing of the aero-engine has been perfected and improved, from the initial low speed and low load to today's high speed and high load. Aero-engine main shaft bearings play a vital role in the operation of aero-engines. During the working process of aero-engines, aero-engine main shaft bearings not only bear high speed, high load, but also carry out long-term the running of time. In order to improve the working quality of the aero-engine, the speed and load performance parameters of the main shaft bearing of the aero-engine must be improved first. At present, there is no well-designed aero-engine main shaf...

AI Technical Summary

Problems solved by technology

At present, there is no well-designed aero-engine main shaft bearing testing machine and relatively scientific and reasonable test and detection methods, which to a certain extent have restricted the inspection and test progress of aero-engine main shaft bearings, thereby restricting the improvement of the performance parameters of aero-engine main shaft bearings. with perfect pace

[0003] In the prior art, the test mechanism in the test machine of the main shaft bearing of the aero-engine generally adopts the transmission shaft system fixed on the bed, which can only be used for the high-speed test or high-load test of the test bearing within a certain bearing size, and the structure is relatively simple. To a certain extent, it restricts the pace of improvement and perfection of the performance parameters of the main shaft bearings of aeroengines.

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