Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rubbing experiment table for multi-disc bolt connection rotor and testing method thereof

A test bench and rubbing technology, applied in vibration testing, impact testing, engine testing, etc., can solve the problem that the research on the performance change of the connection structure is not common, and achieve the effect of precise adjustment, stability and reliability, and guaranteeing stability.

Pending Publication Date: 2022-07-29
GUANGXI UNIVERSITY OF TECHNOLOGY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, researchers in the field of rotor dynamics and nonlinear vibration at home and abroad have revealed the influence of bolt pretightening force, bolt tightening process, rubbing form, rubbing position, rubbing stiffness, rubbing clearance and their combination parameters on rotor dynamics characteristics. In view of the nonlinear response characteristics of various faults, a large number of theoretical researches have been carried out on the performance, reliability and safety of aero-engines, while the rubbing faults induced by the connecting structure in the rotor system and the rubbing faults caused by the connecting structure The research on performance changes is still rare, so the theoretical and experimental research on the influence of aero-engine rubbing parameters and bolt connection parameters on the dynamic characteristics of the rotor system is of great significance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rubbing experiment table for multi-disc bolt connection rotor and testing method thereof
  • Rubbing experiment table for multi-disc bolt connection rotor and testing method thereof
  • Rubbing experiment table for multi-disc bolt connection rotor and testing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and technical solutions.

[0050] like figure 1 , 2 As shown, a multi-disk bolted rotor rubbing test bench is mainly composed of an electrical drive and control system A, a high-pressure rotor system B, a rubbing system C, a test sensing system D and a base 15 .

[0051] The base 15 is installed with a plurality of bolts for fixing the motor bracket 3, the bearing seat bracket 10, the eddy current sensor bracket 14 and the rubbing device bracket 13; at the same time, there are slide rails 11, which are used for the axial direction of the rubbing system. move.

[0052] like image 3 As shown, the high-pressure rotor system B includes mainly a rotating shaft, a multi-disk-hub-bolt connection structure 5, a high-pressure turbine disk 16, a bearing seat bracket 10, a first bearing and a bearing seat 4, a second bearing and a bearing seat 6 and a f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multi-disc bolt connection rotor rub-impact experiment table and a test method thereof. By means of the rub-impact device, accurate adjustment of rub-impact parameters can be achieved; through the axial movement on the slide rail, the rub-impact test on each disc of the multi-disc-hub-bolt connection structure can be realized, and meanwhile, the rub-impact test on the high-pressure turbine disc can be realized; a spring limiting and locking nut and a rub-impact gap locking nut are additionally arranged, so that the looseness of the spring limiting nut and the rub-impact gap adjusting nut caused by vibration in the rub-impact process is avoided, and the stability of the rub-impact test is ensured; the rub-impact gap and the rub-impact rigidity can be adjusted by screwing and loosening the rub-impact gap adjusting nut and replacing outer springs with different wire diameters; the influence of the bolt pre-tightening force, the bolt tightening process, the rub-impact form, the rub-impact gap, the rub-impact rigidity, the rub-impact position and the combination of the parameters on the inherent characteristics and the dynamic characteristics of the whole rotor system can be widely considered.

Description

technical field [0001] The invention belongs to the technical field of vibration testing of aero-engine bolted rotor systems under rubbing fault conditions, and relates to a multi-disk bolted rotor rubbing test bench and a testing method thereof. Test bench and test method for the influence of friction form, rubbing stiffness, rubbing clearance, rubbing position and their combined parameters on the vibration characteristics of rotor systems. Background technique [0002] The bolt connection structure is a common structure for connecting various components in aero-engines, and the connection structure determines the dynamic characteristics of the aero-engine rotor system to a certain extent. In the traditional rotor dynamics research, the rotor system is usually regarded as a continuous whole, and the influence of the bolt connection structure on the vibration characteristics of the rotor system is ignored. In fact, there is a big difference between the inherent and dynamic ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/02G01M7/02G01M7/08G01D21/02
CPCG01M15/02G01M7/02G01M7/027G01M7/08G01D21/02
Inventor 李玉奇朱志敏温传美靳龙付学中刘敏李天能
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com