CN112061419A - Self-balancing centrifugal excitation device - Google Patents
Self-balancing centrifugal excitation device Download PDFInfo
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- CN112061419A CN112061419A CN202011129171.6A CN202011129171A CN112061419A CN 112061419 A CN112061419 A CN 112061419A CN 202011129171 A CN202011129171 A CN 202011129171A CN 112061419 A CN112061419 A CN 112061419A
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- 230000005284 excitation Effects 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 230000009471 action Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000005119 centrifugation Methods 0.000 description 10
- 239000002131 composite material Substances 0.000 description 10
- 230000001133 acceleration Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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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
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a self-balancing centrifugal excitation device, which comprises a vibration exciter I, a vibration exciter II and a self-balancing device; the vibration exciter I and the vibration exciter II are arranged in parallel; the mounting directions of the vibration exciter I and the vibration exciter II are consistent; the vibration exciter I and the vibration exciter II synchronously move in the opposite direction; the vibration exciter I acts on the test piece I through the transmission assembly I, and the vibration exciter II acts on the test piece II through the transmission assembly II; the self-balancing device is respectively connected with the transmission assembly I and the transmission assembly II, and the transmission of the forces with the same size and opposite directions is carried out under the action of the centrifugal force, so that the centrifugal force borne by the vibration exciter I and the vibration exciter II is balanced. In the application, the centrifugal force borne by the two vibration exciters is automatically balanced through the self-balancing device, so that the vibration exciters do not deviate from the working zero positions of the vibration exciters and can work normally all the time.
Description
Technical Field
The invention belongs to the technical field of equipment mechanical environment tests, and particularly relates to a self-balancing centrifugal excitation device.
Background
The aircraft has vibration phenomenon in the flight process, acceleration exists during acceleration, deceleration and turning, a vibration-acceleration composite environment is generated at the moment, products on the aircraft bear two loads of vibration and acceleration, and the composite load has serious influence on instruments such as a navigator and the like, so that a vibration-acceleration composite environment test is necessary to be carried out to carry out environment adaptability examination and verification on the instruments such as the navigator and the like. The mature vibration-acceleration composite environment test system is a vibration-centrifugation composite environment test system, and uses a centrifuge to generate acceleration and a vibration table or a vibration exciter to generate broadband vibration.
According to research, the current vibration-centrifugation composite environment test systems are few, only individual manufacturers in the world and in China can produce the vibration-centrifugation composite environment test systems, but centrifugation generally adopts constant acceleration (the ascending and descending processes are slow, and the ascending and descending processes are not included in test examination), and dynamic centrifugation simulation (the acceleration time history is simulated from 0) cannot be realized.
Therefore, it is urgently needed to develop a self-balancing centrifugal excitation device to solve the above problems.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a self-balancing centrifugal excitation device.
In order to achieve the purpose, the invention provides the following technical scheme:
a self-balancing centrifugal excitation device comprising:
the vibration exciter I and the vibration exciter II are used for generating exciting force and transmitting the exciting force to the test piece; the vibration exciter I and the vibration exciter II are arranged in parallel; the mounting directions of the vibration exciter I and the vibration exciter II are consistent; the vibration exciter I and the vibration exciter II synchronously move in the opposite direction; the vibration exciter I acts on the test piece I through the transmission assembly I, and the vibration exciter II acts on the test piece II through the transmission assembly II;
a self-balancing device; the self-balancing device is respectively connected with the transmission assembly I and the transmission assembly II, and the transmission of the forces with the same size and opposite directions is carried out under the action of the centrifugal force, so that the centrifugal force borne by the vibration exciter I and the vibration exciter II is balanced.
Specifically, the self-balancing device includes:
a guide mechanism;
a hauling rope; the haulage rope is walked around guiding mechanism's one side both ends and is set up, and the both ends of haulage rope are connected with transmission assembly I, transmission assembly II respectively.
Preferably, the guiding mechanism comprises two pulleys, and two ends of the traction rope are connected with the transmission assembly I and the transmission assembly II after respectively passing around the two pulleys.
Specifically, the transmission assembly I comprises a table board I and a dowel bar I; the transmission assembly II comprises a table board II and a dowel bar II; the movable coil of the vibration exciter I is connected with one end of a dowel bar I, the other end of the dowel bar I is connected with the bottom of a table board I, and a test piece I is arranged on the top of the table board I; the moving coil of the vibration exciter II is connected with one end of a dowel bar II, the other end of the dowel bar II is connected with the bottom of the table board II, and the test piece II is arranged on the top of the table board II; two ends of the traction rope are respectively connected with the dowel bar I and the dowel bar II.
Specifically, self-balancing centrifugation excitation device still includes support, bearing I and bearing II, and bearing I and bearing II are linear bearing, and bearing I and bearing II are installed on the support, and dowel steel I passes I installation of bearing, and dowel steel II passes II installations of bearing.
Specifically, the self-balancing centrifugal excitation device further comprises:
a vibration controller for generating a real-time vibration control signal;
the signal distributor is used for generating in-phase and anti-phase signals and realizing anti-phase motion of the vibration exciter I and the vibration exciter II; the signal output end of the vibration controller is connected with the signal input end of the signal distributor;
the power amplifier I and the power amplifier II are used for amplifying input signals and generating currents to respectively drive the vibration exciter I and the vibration exciter II to vibrate; the signal output end of the signal distributor outputs in-phase signals and sends the in-phase signals to the power amplifier I, the signal output end of the signal distributor outputs anti-phase signals and sends the anti-phase signals to the power amplifier II, the power amplifier I is connected with the vibration exciter I, and the power amplifier II is connected with the vibration exciter II.
Compared with the prior art, the invention has the beneficial effects that:
in the application, the centrifugal forces borne by the two vibration exciters are automatically balanced through the self-balancing device, so that the vibration exciters do not deviate from the working zero positions and can always work normally; the vibration-centrifugation composite test device solves the centering problem of the vibration exciter in the centrifugal field by using a simpler and more practical method, has smaller size and mass, can be installed on a conventional centrifuge and a dynamic centrifuge, and can realize a vibration-centrifugation composite test and a vibration-dynamic centrifugation composite test for a small-mass test piece.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is a signal schematic of a signal splitter in the present application; where a is the input signal, b is the in-phase output signal, c is the inverted output signal.
In the figure: 11. a test piece I; 12. a test piece II; 21. a table top I; 22. a table top II; 31. a dowel bar I; 32. a dowel bar II; 41. a bearing I; 42. a bearing II; 5. a support; 6. a pulley; 7. a hauling rope; 81. a vibration exciter I; 82. a vibration exciter II; 91. a vibration controller; 92. a signal distributor; 93. a power amplifier I; 94. and a power amplifier II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides the following technical solutions:
a self-balancing centrifugal excitation device comprising:
the vibration exciter I81 and the vibration exciter II 82 are used for generating exciting force and transmitting the exciting force to the test piece; the vibration exciter I81 and the vibration exciter II 82 are arranged in parallel; the mounting directions of the vibration exciter I81 and the vibration exciter II 82 are consistent; the vibration exciter I81 and the vibration exciter II 82 synchronously move in the opposite direction; the vibration exciter I81 acts on the test piece I11 through the transmission assembly I, and the vibration exciter II 82 acts on the test piece II 12 through the transmission assembly II;
a self-balancing device; the self-balancing device is respectively connected with the transmission assembly I and the transmission assembly II, and the transmission of the forces with the same size and opposite directions is carried out under the action of the centrifugal force, so that the centrifugal force borne by the vibration exciter I81 and the vibration exciter II 82 is balanced.
The self-balancing device comprises:
a guide mechanism;
a hauling rope 7; the two ends of the traction rope 7 are arranged at the two ends of one side of the guide mechanism in a bypassing mode, and the two ends of the traction rope 7 are connected with the transmission assembly I and the transmission assembly II respectively.
The guiding mechanism comprises two pulleys 6, and two ends of the traction rope 7 are connected with the transmission assembly I and the transmission assembly II after respectively bypassing the two pulleys 6.
The transmission assembly I comprises a table board I21 and a dowel bar I31; the transmission assembly II comprises a table top II 22 and a dowel bar II 32; the movable coil of the vibration exciter I81 is connected with one end of a dowel bar I31, the other end of the dowel bar I31 is connected with the bottom of the table top I21, and the test piece I11 is arranged on the top of the table top I21; the moving coil of the vibration exciter II 82 is connected with one end of a dowel bar II 32, the other end of the dowel bar II 32 is connected with the bottom of the table top II 22, and the test piece II 12 is arranged on the top of the table top II 22; two ends of the traction rope 7 are respectively connected with the dowel bar I31 and the dowel bar II 32.
In some embodiments, the two ends of the pulling rope 7 are respectively fixed on the dowel I31 and the dowel II 32 through bolt locking mechanisms.
The self-balancing centrifugal excitation device further comprises a support 5, a bearing I41 and a bearing II 42, wherein the bearing I41 and the bearing II 42 are linear bearings, the bearing I41 and the bearing II 42 are installed on the support 5, the dowel bar I31 penetrates through the bearing I41 to be installed, and the dowel bar II 32 penetrates through the bearing II 42 to be installed. The arrangement of the bearing I41 and the bearing II 42 plays a role in stably supporting the dowel bar I31 and the dowel bar II 32.
The self-balancing centrifugal excitation device further comprises:
a vibration controller 91 for generating a real-time vibration control signal;
the signal distributor 92 is used for generating in-phase and anti-phase signals and realizing anti-phase motion of the vibration exciter I81 and the vibration exciter II 82; the signal output end of the vibration controller 91 is connected with the signal input end of the signal distributor 92;
the power amplifier I93 and the power amplifier II 94 are used for amplifying an input signal and generating current to respectively drive the vibration exciter I81 and the vibration exciter II 82 to vibrate; the signal output end of the signal distributor 92 outputs in-phase signals and sends the in-phase signals to the power amplifier I93, the signal output end of the signal distributor 92 outputs anti-phase signals and sends the anti-phase signals to the power amplifier II 94, the power amplifier I93 is connected with the vibration exciter I81, and the power amplifier II 94 is connected with the vibration exciter II 82.
The signal splitter 92 can strictly output two signals with the same amplitude and opposite phases, and the input impedance of the signal splitter is matched with the output impedance of the vibration controller 91, and the output impedance of the signal splitter is matched with the input impedance of the power amplifier.
The signal splitter 92 splits two signals, one in phase (as shown in b in fig. 2) and one in anti-phase (as shown in c in fig. 2).
In the application, the vibration exciter I81 and the vibration exciter II 82 have the same size and performance, and the table top I21 and the table top II 22 have the same structure, size and quality; the structure, size and mass of the dowel bar I31 and the dowel bar II 32 are the same; the structure, size and mass of the test piece I11 and the test piece II 12 are the same; the bearing I41 and the bearing II 42 are identical in structure, size and mass; the two pulleys 6 have the same structure, size and mass; the bracket 5 is also arranged symmetrically, and the symmetrical two sides have the same structure, size and mass; all two components are symmetrically arranged on the bracket 5; the amplification gains of the power amplifier I93 and the power amplifier II 94 are adjusted to be strictly consistent; the two paths of signals output by the signal distributor 92 have the same amplitude and strictly opposite phases, and under the action of centrifugal force (no matter common constant acceleration or newly proposed dynamic centrifugation), the centrifugal force borne by the two vibration exciters is automatically balanced through a self-balancing device, so that the vibration exciters do not deviate from the working zero positions and can always work normally.
When the device works, under the action of centrifugal force, the test piece I11, the test piece II 12, the transmission assembly I, the transmission assembly II, the moving coil of the vibration exciter I81 and the moving coil of the vibration exciter II 82 are all under the action of centrifugal force, when the test piece I11, the transmission assembly I and the moving coil of the vibration exciter I81 are under the action of centrifugal force, the moving coils of the test piece II 12, the transmission assembly II and the vibration exciter II 82 are also under the action of centrifugal force, and have the same size and direction as the centrifugal force borne by the test piece I11, the transmission assembly I and the moving coil of the vibration exciter I81, but under the action of the traction rope 7, the two forces are mutually transmitted through the traction rope 7 and are mutually counteracted; and because the self-balancing device has the integral action and the vibration exciters I81 and II 82 move in opposite phases, the traction rope 7 does not influence the vibration of the vibration exciters I81 and II 82.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A self-balancing centrifugal excitation device, comprising:
the vibration exciter I and the vibration exciter II are used for generating exciting force and transmitting the exciting force to the test piece; the vibration exciter I and the vibration exciter II are arranged in parallel; the mounting directions of the vibration exciter I and the vibration exciter II are consistent; the vibration exciter I and the vibration exciter II synchronously move in the opposite direction; the vibration exciter I acts on the test piece I through the transmission assembly I, and the vibration exciter II acts on the test piece II through the transmission assembly II;
a self-balancing device; the self-balancing device is respectively connected with the transmission assembly I and the transmission assembly II, and the transmission of the forces with the same size and opposite directions is carried out under the action of the centrifugal force, so that the centrifugal force borne by the vibration exciter I and the vibration exciter II is balanced.
2. The self-balancing centrifugal excitation device of claim 1, wherein the self-balancing device comprises:
a guide mechanism;
a hauling rope; the haulage rope is walked around guiding mechanism's one side both ends and is set up, and the both ends of haulage rope are connected with transmission assembly I, transmission assembly II respectively.
3. The self-balancing centrifugal excitation device as claimed in claim 2, wherein the guiding mechanism comprises two pulleys, and two ends of the traction rope are respectively connected with the transmission assembly I and the transmission assembly II after passing around the two pulleys.
4. The self-balancing centrifugal excitation device as claimed in any one of claims 1 to 3, wherein the transmission assembly I comprises a table board I and a dowel bar I; the transmission assembly II comprises a table board II and a dowel bar II; the movable coil of the vibration exciter I is connected with one end of a dowel bar I, the other end of the dowel bar I is connected with the bottom of a table board I, and a test piece I is arranged on the top of the table board I; the moving coil of the vibration exciter II is connected with one end of a dowel bar II, the other end of the dowel bar II is connected with the bottom of the table board II, and the test piece II is arranged on the top of the table board II; two ends of the traction rope are respectively connected with the dowel bar I and the dowel bar II.
5. The self-balancing centrifugal excitation device of claim 4, further comprising a support, a bearing I and a bearing II, wherein the bearing I and the bearing II are both linear bearings, the bearing I and the bearing II are mounted on the support, the dowel bar I is mounted by penetrating through the bearing I, and the dowel bar II is mounted by penetrating through the bearing II.
6. The self-balancing centrifugal excitation device of claim 1, further comprising:
a vibration controller for generating a real-time vibration control signal;
the signal distributor is used for generating in-phase and anti-phase signals and realizing anti-phase motion of the vibration exciter I and the vibration exciter II; the signal output end of the vibration controller is connected with the signal input end of the signal distributor;
the power amplifier I and the power amplifier II are used for amplifying input signals and generating currents to respectively drive the vibration exciter I and the vibration exciter II to vibrate; the signal output end of the signal distributor outputs in-phase signals and sends the in-phase signals to the power amplifier I, the signal output end of the signal distributor outputs anti-phase signals and sends the anti-phase signals to the power amplifier II, the power amplifier I is connected with the vibration exciter I, and the power amplifier II is connected with the vibration exciter II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129171.6A CN112061419A (en) | 2020-10-21 | 2020-10-21 | Self-balancing centrifugal excitation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129171.6A CN112061419A (en) | 2020-10-21 | 2020-10-21 | Self-balancing centrifugal excitation device |
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| CN112061419A true CN112061419A (en) | 2020-12-11 |
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| CN202011129171.6A Pending CN112061419A (en) | 2020-10-21 | 2020-10-21 | Self-balancing centrifugal excitation device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0518866A (en) * | 1991-07-09 | 1993-01-26 | Hitachi Ltd | Centrifugal force loading experiment apparatus |
| CN104075863A (en) * | 2014-07-21 | 2014-10-01 | 苏州广博力学环境实验室有限公司 | Vibration and centrifugation composite-testing equipment |
| CN105372119A (en) * | 2015-12-05 | 2016-03-02 | 西安科技大学 | Vibration cracking test device under energy control |
| CN106908208A (en) * | 2017-03-09 | 2017-06-30 | 苏州东菱振动试验仪器有限公司 | The device and Centrifugal vibration testing equipment of the elastic moving component centrifugal force of balance |
| CN110057524A (en) * | 2019-05-27 | 2019-07-26 | 中国工程物理研究院总体工程研究所 | Broadband dual stage based on slide unit simultaneously pushes away pilot system |
| CN212290390U (en) * | 2020-10-21 | 2021-01-05 | 中国工程物理研究院总体工程研究所 | Self-balancing centrifugal excitation device |
-
2020
- 2020-10-21 CN CN202011129171.6A patent/CN112061419A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0518866A (en) * | 1991-07-09 | 1993-01-26 | Hitachi Ltd | Centrifugal force loading experiment apparatus |
| CN104075863A (en) * | 2014-07-21 | 2014-10-01 | 苏州广博力学环境实验室有限公司 | Vibration and centrifugation composite-testing equipment |
| CN105372119A (en) * | 2015-12-05 | 2016-03-02 | 西安科技大学 | Vibration cracking test device under energy control |
| CN106908208A (en) * | 2017-03-09 | 2017-06-30 | 苏州东菱振动试验仪器有限公司 | The device and Centrifugal vibration testing equipment of the elastic moving component centrifugal force of balance |
| CN110057524A (en) * | 2019-05-27 | 2019-07-26 | 中国工程物理研究院总体工程研究所 | Broadband dual stage based on slide unit simultaneously pushes away pilot system |
| CN212290390U (en) * | 2020-10-21 | 2021-01-05 | 中国工程物理研究院总体工程研究所 | Self-balancing centrifugal excitation device |
Non-Patent Citations (2)
| Title |
|---|
| 牛宝良: "离心机上的垂直振动台时域建模与仿真", 长江科学院院报, 15 April 2012 (2012-04-15), pages 254 - 260 * |
| 雷虎民, 田昌会, 李荣林, 牛宝良, 韩宇航: "振动台在离心环境中的离心力自恰克服方法研究", 机床与液压, no. 05, 30 October 2001 (2001-10-30), pages 96 - 102 * |
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