CN105928681A - Piezoelectric ceramics-hydraulic vibration-dynamic centrifugal complex environment testing device - Google Patents
Piezoelectric ceramics-hydraulic vibration-dynamic centrifugal complex environment testing device Download PDFInfo
- Publication number
- CN105928681A CN105928681A CN201610423355.0A CN201610423355A CN105928681A CN 105928681 A CN105928681 A CN 105928681A CN 201610423355 A CN201610423355 A CN 201610423355A CN 105928681 A CN105928681 A CN 105928681A
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- piezoelectric ceramics
- pivoted arm
- platform
- vibration
- excitation system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/004—Testing the effects of speed or acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a piezoelectric ceramics-hydraulic vibration-dynamic centrifugal complex environment testing device which comprises a main motor, a tumbler, an excitation system, a rotating frame and inner motors. The first end of the tumbler is vertically connected with a torque output shaft of the main motor. The inner motors are arranged on the second end of the tumbler. Torque output shafts of the inner motors are arranged to be perpendicular to the tumbler. The rotating frame is fixedly connected with the torque output shafts of the inner motors. The excitation system is arranged in the rotating frame. A test piece is arranged on the excitation system. According to the invention, the excitation system provides all-frequency vibration acceleration output for the test piece; the main motor and the tumbler carry out real-time dynamic simulation on the three-axis acceleration of the test piece; and two structures are integrated to carry out complex environment test on the low-frequency-to-high-frequency vibration acceleration and the dynamically variational overload acceleration of the test piece.
Description
Technical field
The present invention relates to technical field of mechanical environmental test, particularly relate to a kind of based on piezoelectric ceramics-hydraulic pressure shake
Dynamic-dynamic centrifugal compound environmental tester.
Background technology
Dither, dynamic overload, temperature and the impact etc. that weapon and aerospace system experience at flight course
Combinational environment, has complex effects to product structure intensity and reliability, especially vibrates and transships compound,
It is to affect the most significant two kinds of environmental factors of flying product 26S Proteasome Structure and Function.Along with weapon and Aero-Space cause
Fast development, the mechanism in weapon and aerospace system and electronic equipment are carried out structural strength and function
Reliability Check has become as the emphasis of relevant industries.
Current Assessment mainly has two kinds.The first is by the flight test of reality, and advantage is can be true
The combinational environment of real simulated flight system experience, but flight test not only cost is high, the cycle is long, and
It is difficult to provide strong technical support in principle and design phase.The second way is to carry out mechanical ring on ground
Environmental simulation experiment, such as vibration test, centrifugal test etc..The environmental test technology mesh of this single factors
Before domestic and international comparative maturity, but Multi-factor overlap test difficulty is big, especially vibrates and transship compound mechanics
Environmental test.
Summary of the invention
The purpose of the present invention is that provides a kind of based on piezoelectric ceramics-hydraulic pressure to solve the problems referred to above
Vibration-dynamic centrifugal compound environmental tester.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of vibration-dynamic centrifugal compound environmental tester based on piezoelectric ceramics-hydraulic pressure, including mair motor,
Pivoted arm, excitation system, rotating frame and interior motor, the first end of described pivoted arm is defeated with the torque of described mair motor
Shaft vertically connects, and described interior motor is arranged on the second end of described pivoted arm, the torque output of described interior motor
Axle is vertically arranged with described pivoted arm, and described rotating frame is fixing with the torque output shaft of described interior motor to be connected, institute
State excitation system to be arranged in described rotating frame, described excitation system is provided with testpieces.
Specifically, described interior motor be quantity be two, the second end of described pivoted arm is Y type bifurcation structure,
Two described interior motors are separately fixed at the divergent ends of described Y type bifurcation structure, turning of two described interior motors
Square output shaft is arranged in described Y type bifurcation structure, and wherein dead in line, and described rotating frame is arranged on
Between described Y type bifurcation mechanism, and the torque output shaft of its two ends interior motor described with two respectively is fixing even
Connect.
Preferably, the line between two interior motors overlaps with the axis of described pivoted arm, described excitation system
Axis overlap with the axis of described pivoted arm.
Specifically, described excitation system includes mounting platform, excitation platform, exciting unit and hydraulic cylinder, institute
State that the hydraulic stem of excitation platform and described hydraulic cylinder is fixing to be connected, and be horizontally disposed with, the setting of described mounting platform
Above described excitation platform, and it is connected by multiple described exciting unit and described excitation platform are fixing,
On described mounting platform, testpieces is installed.
Specifically, described exciting unit includes piezoelectric ceramics and displacement amplifying mechanism, and described piezoelectric ceramics is installed
In described displacement amplifying mechanism, and with described displacement amplifying mechanism interference fit, described displacement amplifying mechanism
Top and bottom all by downside and the upside of described excitation platform of connecting bolt and described mounting platform
Face is fixing to be connected.
The beneficial effects of the present invention is:
Present invention vibration-dynamic centrifugal compound environmental tester based on piezoelectric ceramics-hydraulic pressure passes through exciting system
Unite and the vibration acceleration output of full frequency band is provided for testpieces, and realized testpieces by mair motor and pivoted arm
The real time dynamic simulation of 3-axis acceleration, two kinds of structures of summary, complete to testpieces from low to high
Vibration acceleration and the combined environment testing ability of the dynamic overloading acceleration of change.
Accompanying drawing explanation
Fig. 1 is vibration-dynamic centrifugal compound environmental tester based on piezoelectric ceramics-hydraulic pressure of the present invention
Structural representation；
Fig. 2 is the structural representation of excitation system of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As it is shown in figure 1, a kind of vibration based on piezoelectric ceramics 10-hydraulic pressure-dynamic centrifugal combinational environment of the present invention
Experimental rig, including mair motor 1, pivoted arm 2, excitation system 6, rotating frame 5 and interior motor 3 (with 4),
First end of pivoted arm 2 is vertical with the torque output shaft of mair motor 1 to be connected, and interior motor 3 is arranged on pivoted arm 2
Second end, the torque output shaft of interior motor 3 is vertically arranged with pivoted arm 2, and rotating frame 5 turns with interior motor 3
Square output shaft is fixing to be connected, and excitation system 6 is arranged in rotating frame 5, excitation system 6 is provided with test
Part 7, interior motor 3 be quantity be two, the second end of pivoted arm 2 is Y type bifurcation structure, two interior motors 3
Being separately fixed at the divergent ends of Y type bifurcation structure, the torque output shaft of two interior motors 3 is arranged at Y type
In bifurcation structure, and wherein dead in line, rotating frame 5 is arranged between Y type bifurcation mechanism, and its two ends
Fix with the torque output shaft of two interior motors 3 respectively and be connected, the line between two interior motors 3 and pivoted arm 2
Axis overlap, the axis of excitation system 6 overlaps with the axis of pivoted arm 2.
As in figure 2 it is shown, excitation system 6 includes mounting platform 8, excitation platform 11, exciting unit and hydraulic pressure
Cylinder, excitation platform 11 is fixing with the hydraulic stem of hydraulic cylinder to be connected, and is horizontally disposed with, and mounting platform 8 is arranged on
The top of excitation platform 11, and be connected by multiple exciting unit are fixing with excitation platform 11, mounting platform 8
On testpieces 7 is installed, exciting unit includes piezoelectric ceramics 10 and displacement amplifying mechanism 9, piezoelectric ceramics 10
Be arranged in displacement amplifying mechanism 9, and with displacement amplifying mechanism 9 interference fit, displacement amplifying mechanism 9
Top and bottom are all fixed with the downside of mounting platform 8 and the upper side of excitation platform 11 by connecting bolt
Connect.
The work of present invention vibration based on piezoelectric ceramics 10-hydraulic pressure-dynamic centrifugal compound environmental tester is former
Manage as follows:
Mair motor 1 drives pivoted arm 2 to rotate, and testpieces 7 exports the overloading acceleration value of dynamically change,
Drive rotating frame 5 to rotate by interior motor 3, the overloading acceleration value dynamically changed is decomposed testpieces 7
Tri-axles of xyz on, it is achieved to the 3-axis acceleration environment of any time in testpieces 7 flight course
Simulation.
Exciting force is being produced by the reciprocating motion of piezoelectric ceramics 10, and by displacement amplifying mechanism 9 by piezoelectricity
The displacement equations of pottery 10 output, the vibration test completing the high band to testpieces 7 is examined, and is passed through liquid
The exciting of cylinder pressure, the vibration test completing the low-frequency range to testpieces 7 is examined, by exciting unit and hydraulic pressure
The series connection of cylinder, completes to examine full frequency band vibration test.
The weight and volume of the high-frequency excitation subsystem of piezoelectric ceramics 10 and displacement amplifying mechanism 9 composition is the least,
Excitation principle is simple, and easily realizes processing and debug with precision.By connecting with hydraulic vibration gen, it is achieved
Dynamically the wideband vibration acceleration output under change acceleration environment, completes to testpieces 7 from low to high
Vibration acceleration and the combined environment testing examination of the dynamic overloading acceleration of change, several hertz can be covered
Vibration frequency range to several KHzs.
Technical scheme is not limited to the restriction of above-mentioned specific embodiment, every technology according to the present invention
The technology deformation that scheme is made, within each falling within protection scope of the present invention.
Claims (5)
1. vibration-dynamic centrifugal compound environmental tester based on piezoelectric ceramics-hydraulic pressure, its feature exists
In: include mair motor, pivoted arm, excitation system, rotating frame and interior motor, the first end of described pivoted arm and institute
The torque output shaft stating mair motor vertically connects, and described interior motor is arranged on the second end of described pivoted arm, described
The torque output shaft of interior motor is vertically arranged with described pivoted arm, and described rotating frame is defeated with the torque of described interior motor
Shaft is fixing to be connected, and described excitation system is arranged in described rotating frame, described excitation system is provided with examination
Test part.
Vibration-dynamic centrifugal combinational environment based on piezoelectric ceramics-hydraulic pressure the most according to claim 1
Experimental rig, it is characterised in that: described interior motor be quantity be two, the second end of described pivoted arm is Y type
Bifurcation structure, two described interior motors are separately fixed at the divergent ends of described Y type bifurcation structure, described in two
The torque output shaft of interior motor is arranged in described Y type bifurcation structure, and wherein dead in line, described rotation
Turn frame to be arranged between described Y type bifurcation mechanism, and the torque of its two ends interior motor described with two respectively is defeated
Shaft is fixing to be connected.
Vibration-dynamic centrifugal combinational environment based on piezoelectric ceramics-hydraulic pressure the most according to claim 2
Experimental rig, it is characterised in that: the line between two interior motors overlaps with the axis of described pivoted arm, institute
The axis of the axis and described pivoted arm of stating excitation system overlaps.
Vibration-dynamic centrifugal combinational environment based on piezoelectric ceramics-hydraulic pressure the most according to claim 3
Experimental rig, it is characterised in that: described excitation system include mounting platform, excitation platform, exciting unit and
Hydraulic cylinder, described excitation platform is fixing with the hydraulic stem of described hydraulic cylinder to be connected, and is horizontally disposed with, described peace
Assembling platform is arranged on the top of described excitation platform, and by multiple described exciting unit and described excitation platform
Fixing connection, described mounting platform is provided with testpieces.
Vibration-dynamic centrifugal combinational environment based on piezoelectric ceramics-hydraulic pressure the most according to claim 4
Experimental rig, it is characterised in that: described exciting unit includes piezoelectric ceramics and displacement amplifying mechanism, described pressure
Electroceramics is arranged in described displacement amplifying mechanism, and with described displacement amplifying mechanism interference fit, institute's rheme
Move the top and bottom of enlarger all by connecting bolt and the downside of described mounting platform and described exciting
The upper side of platform is fixing to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610423355.0A CN105928681A (en) | 2016-06-14 | 2016-06-14 | Piezoelectric ceramics-hydraulic vibration-dynamic centrifugal complex environment testing device |
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| CN201610423355.0A CN105928681A (en) | 2016-06-14 | 2016-06-14 | Piezoelectric ceramics-hydraulic vibration-dynamic centrifugal complex environment testing device |
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| CN105928681A true CN105928681A (en) | 2016-09-07 |
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| CN201610423355.0A Pending CN105928681A (en) | 2016-06-14 | 2016-06-14 | Piezoelectric ceramics-hydraulic vibration-dynamic centrifugal complex environment testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562221A (en) * | 2016-03-07 | 2016-05-11 | 中国工程物理研究院总体工程研究所 | Large-mass test part mounting device on vibration centrifuge |
| CN106501112A (en) * | 2016-10-19 | 2017-03-15 | 中国工程物理研究院总体工程研究所 | Centrifugal friction assay device |
| CN109974953A (en) * | 2017-12-28 | 2019-07-05 | 沈阳新松机器人自动化股份有限公司 | A kind of vibration simulation platform |
| CN110082053A (en) * | 2019-06-05 | 2019-08-02 | 中国工程物理研究院总体工程研究所 | The wideband excitation system based on embedded hydraulic cylinder under degree of being suited to speed up environment |
| US20220288606A1 (en) * | 2021-03-15 | 2022-09-15 | National Technology & Engineering Solutions Of Sandia, Llc | Vibration isolation for centrifuge testbeds |
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| CN105171926A (en) * | 2015-07-23 | 2015-12-23 | 厦门大学 | Vibration-assisted device of single-point diamond cutting tool |
| CN205670072U (en) * | 2016-06-14 | 2016-11-02 | 中国工程物理研究院总体工程研究所 | Vibration dynamic centrifugal compound environmental tester based on piezoelectric ceramics hydraulic pressure |
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2016
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| CN104764575A (en) * | 2014-01-03 | 2015-07-08 | 天津航天瑞莱科技有限公司 | Combined vibration test apparatus and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562221A (en) * | 2016-03-07 | 2016-05-11 | 中国工程物理研究院总体工程研究所 | Large-mass test part mounting device on vibration centrifuge |
| CN105562221B (en) * | 2016-03-07 | 2018-05-15 | 中国工程物理研究院总体工程研究所 | Big quality test part erecting device on vibrating centrifuge |
| CN106501112A (en) * | 2016-10-19 | 2017-03-15 | 中国工程物理研究院总体工程研究所 | Centrifugal friction assay device |
| CN109974953A (en) * | 2017-12-28 | 2019-07-05 | 沈阳新松机器人自动化股份有限公司 | A kind of vibration simulation platform |
| CN110082053A (en) * | 2019-06-05 | 2019-08-02 | 中国工程物理研究院总体工程研究所 | The wideband excitation system based on embedded hydraulic cylinder under degree of being suited to speed up environment |
| CN110082053B (en) * | 2019-06-05 | 2023-11-10 | 中国工程物理研究院总体工程研究所 | Broadband excitation system based on embedded hydraulic cylinder and suitable for acceleration environment |
| US20220288606A1 (en) * | 2021-03-15 | 2022-09-15 | National Technology & Engineering Solutions Of Sandia, Llc | Vibration isolation for centrifuge testbeds |
| US11612899B2 (en) * | 2021-03-15 | 2023-03-28 | National Technology & Engineering Solutions Of Sandia, Llc | Vibration isolation for centrifuge testbeds |
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Application publication date: 20160907 |