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

An Accurate and Controllable Non-contact Specimen Rotating Magnetic Field Fatigue Excitation and Vibration Measurement Device

A non-contact, rotary technology, applied in the direction of measuring devices, vibration testing, machine/structural components testing, etc., can solve the problems of increasing the complexity of the test device, fewer vibration characteristic devices, etc., and achieve convenient and accurate speed adjustment Adjustable, wide range of effects

Active Publication Date: 2018-04-10
CHONGQING UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use of wired sensors for vibration measurement of rotating specimens will increase the complexity of the test device, and its fatigue vibration test is a difficult point in the field of vibration testing. At present, there are few devices for testing the vibration characteristics of rotating specimens

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
  • An Accurate and Controllable Non-contact Specimen Rotating Magnetic Field Fatigue Excitation and Vibration Measurement Device
  • An Accurate and Controllable Non-contact Specimen Rotating Magnetic Field Fatigue Excitation and Vibration Measurement Device
  • An Accurate and Controllable Non-contact Specimen Rotating Magnetic Field Fatigue Excitation and Vibration Measurement Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment is aimed at rotating specimens.

[0053] A precise and controllable non-contact test piece rotating magnetic field fatigue excitation and vibration measurement device, including vibration-reducing and insulating fixture 2, vibration absorber 3, dynamic balance device 4, vibration exciter 7, electromagnetic piezoelectric coupling vibration measurement sensor 8 , Test bench 14, transmission device and precise control device.

[0054] see figure 1 , the electromagnet support frame 11 is installed on the table of the test bench 14 . The electromagnet support frame 11 is U-shaped, and a through hole is provided in the center of its bottom plate, and a vibration exciter clamping platform 9 and an electromagnetic piezoelectric coupling vibration measuring sensor clamping platform 10 are provided on the inner walls of its two side plates.

[0055] see first Figure 6 to Figure 11 , the part of the electromagnetic piezoelectric coupling vibration measuring sen...

Embodiment 2

[0088] This embodiment is aimed at static test pieces.

[0089] The implementation mode and principle of static test pieces are similar to those of rotating test pieces. Specifically, when the test piece is in a static state, the structure and working principle of the clamp, shock absorber, self-locking screw adjustment device and vibration exciter of the present invention are the same as those in the rotating state, and the control device and principle of the vibration source are also the same ; The difference is: cut off the power supply of the stepless speed-adjustable AC motor, so that the test piece can be tested in a static state; and the object of the test is wider than that in the rotating state; in addition, the vibration measuring device can be different. In addition to the electromagnetic piezoelectric coupling sensor, the vibration device can also use a wired sensor to measure vibration.

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 provides an accurate controllable non-contact test piece rotary magnetic field fatigue excitation and vibration test device. The device comprises a vibration damping insulation clamp, a vibration damper, a dynamic balance device, a vibration exciter, an electromagnetic piezoelectric coupling vibration sensor, a test station, a transmission device and an accurate control device. The excitation and vibration test device is suitable for rotary test pieces and especially suitable for vibration characteristic researches on a wind power blade, an engine, a turbine blade, a helicopter rotor and a tail rotor blade, the excitation and vibration test device can vividly simulate vibration fatigue states of rotary test pieces respectively under conditions of 360-DEG all directions, same rotating speed and different excitation forces, same excitation force and different rotating speeds, and different rotating speeds and different excitation forces, the excitation and vibration test device can monitor related vibration characteristic parameters such as the excitation force, the vibration displacement, the vibration speed and the vibration acceleration continuously, and the excitation and vibration test device is suitable for vibration fatigue characteristic analysis on stationary test pieces.

Description

technical field [0001] The invention relates to a fatigue excitation and vibration measurement device, in particular to an accurate and controllable non-contact test piece rotating magnetic field fatigue excitation and vibration measurement device. The invention is particularly suitable as a test excitation and vibration measurement device for blades and rotor tail rotors. Background technique [0002] In the field of machinery, the phenomenon of vibration fatigue is ubiquitous. Vibration fatigue is very harmful to mechanical parts. If it is light, it will shorten the service life of the parts; if it is heavy, it will directly damage the parts and make them unusable; it will even endanger personal safety. Therefore, it is very necessary to study the vibration fatigue of mechanical parts, and its application value is huge. To study the vibration fatigue problem in the mechanical field, it is inseparable from the mechanical vibration device. The vibration excitation device ...

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 Patents(China)
IPC IPC(8): G01M7/02
CPCG01M7/022
Inventor 林腾蛟谢道坤
Owner CHONGQING UNIV
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