CN106092475A - A kind of piezoelectric type vibration platform being applicable to broadband and high thrust - Google Patents
A kind of piezoelectric type vibration platform being applicable to broadband and high thrust Download PDFInfo
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- CN106092475A CN106092475A CN201610382431.8A CN201610382431A CN106092475A CN 106092475 A CN106092475 A CN 106092475A CN 201610382431 A CN201610382431 A CN 201610382431A CN 106092475 A CN106092475 A CN 106092475A
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- arch
- piezoelectric ceramics
- amplifying mechanism
- displacement amplifying
- shaped displacement
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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
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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- General Physics & Mathematics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a kind of piezoelectric type vibration platform being applicable to broadband and high thrust, including base, table top, line slide rail, piezoelectric ceramics and arch-shaped displacement amplifying mechanism, the downside at the two ends of arch-shaped displacement amplifying mechanism is by line slide rail and base slidable connection, two piezoelectric ceramics are separately positioned between two ends and the two ends of base of arch-shaped displacement amplifying mechanism, first end of two piezoelectric ceramics is fixing with the two ends of base respectively to be connected, and the second end of two piezoelectric ceramics is fixing with the two ends end face of arch-shaped displacement amplifying mechanism respectively to be connected.The present invention is amplified by the arch-shaped displacement amplifying mechanism of Piezoelectric Ceramic and transmits the displacement of piezoelectric ceramics, produce broadband and the vibration table of high thrust, make arch-shaped displacement amplifying mechanism while keeping bigger physical dimension, high displacement amplification ratio and high rigidity, also there is higher natural frequency, it is ensured that the output of wideband, high thrust vibration.
Description
Technical field
The present invention relates to mechanical environment and field of measuring technique, particularly relate to a kind of pressure being applicable to broadband and high thrust
Electric-type vibration table.
Background technology
Currently known vibration testing device mainly has a three types: mechanical shaker, electromagnetic vibration platform and hydraulic pressure
Vibration table, wherein mechanical shaker and hydraulic vibration gen are primarily adapted for use in medium and low frequency, and the thrust of hydraulic vibration gen is bigger；Electromagnetism
The frequency range of formula vibration table is wider, and exciting force is the biggest.But the volume and weight of these vibration test devices is general relatively
Greatly, and exciting mechanism is complex.
An other class is piezoelectric vibration generator system, the piezoelectric effect of piezoelectric element the exciting force produced drives table top, its work
Frequency can reach few kilohertz, and exciting is simple, weight and volume is little, is particularly suited for limiting vibration table weight and volume
Make strict occasion.But the exciting force of piezoelectric vibration generator system is little, accekeration during low frequency is little.And piezoelectric ceramics belongs to fragility material
Material, it is impossible to bear pulling force and moment of flexure, therefore can not directly use piezoelectric ceramics to carry out exciting.At present, the most generally piezoelectricity is made pottery
Porcelain is encapsulated in compliant mechanism and realizes precision actuation, but is concentrated mainly on the application aspect of precisely locating platform, known in these
Although innovation and creation disclosure satisfy that the application demand of precisely locating platform, but output displacement is the least, and system
Natural frequency is the lowest, it is impossible to be directly used in the vibration output of medium-high frequency.
Summary of the invention
The purpose of the present invention is that provides a kind of pressure being applicable to broadband and high thrust to solve the problems referred to above
Electric-type vibration table.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of piezoelectric type vibration platform being applicable to broadband and high thrust, including base, table top, line slide rail, piezoelectricity pottery
Porcelain and arch-shaped displacement amplifying mechanism, the downside at the two ends of described arch-shaped displacement amplifying mechanism by described line slide rail with
Described base slidable connection, two described piezoelectric ceramics are separately positioned on two ends and the institute of described arch-shaped displacement amplifying mechanism
Stating between the two ends of base, the first end of two described piezoelectric ceramics is fixing with the two ends of described base respectively to be connected, two institutes
Stating that the second end of piezoelectric ceramics is fixing with the two ends end face of described arch-shaped displacement amplifying mechanism respectively to be connected, described table top passes through
Bolt is fixing with the top of described arch-shaped displacement amplifying mechanism to be connected.
Specifically, described base and described table top are rigid material, the plane at described table top place and described base institute
Plane be arranged in parallel.
Specifically, described arch-shaped displacement amplifying mechanism includes two rigidity inputs, two flexible arms and rigidity upper end
Face, the first end of two described flexible arms is connected with two described rigidity inputs respectively, the second end of two described flexible arms
All fix with described rigidity upper surface and be connected, the bottom surface of two described rigidity inputs and described line slide rail slidable connection,
Second end of two described piezoelectric ceramics is fixing with the lateral surface of two described rigidity inputs respectively to be connected, described rigidity upper end
Face is connected by described bolt and described table top are fixing.
Specifically, two described flexible arms are all obliquely installed, and are symmetrical arranged along the axis of described rigidity upper surface, institute
Stating flexible arm is spring steel or aluminum alloy materials.
Specifically, described piezoelectric ceramics is stacked piezoelectric ceramics or encapsulation type piezoelectric ceramics.
The beneficial effects of the present invention is:
A kind of piezoelectric type vibration platform of broadband and high thrust that is applicable to of the present invention is by Piezoelectric Ceramic arch bridge morpheme
Move enlarger and amplify and transmit the displacement of piezoelectric ceramics, and then produce broadband and the vibration table of high thrust, make arch-shaped
Displacement amplifying mechanism, while keeping bigger physical dimension, high displacement amplification ratio and high rigidity, also has higher intrinsic
Frequency, it is ensured that the output of wideband, high thrust vibration.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of piezoelectric type vibration platform being applicable to broadband and high thrust of the present invention；
Fig. 2 is the front view of a kind of piezoelectric type vibration platform being applicable to broadband and high thrust of the present invention；
Fig. 3 is the structural representation of arch-shaped displacement amplifying mechanism of the present invention；
Fig. 4 is the knot of an embodiment of a kind of piezoelectric type vibration platform being applicable to broadband and high thrust of the present invention
Structure schematic diagram.
In figure: 1-base, 2-line slide rail, 3-piezoelectric ceramics, 4-table top, 5-bolt, the arch-shaped displacement amplifying mechanism of 6-,
7-flexible arm, 8-rigidity input, 9-rigidity upper surface.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As depicted in figs. 1 and 2, a kind of piezoelectric type vibration platform being applicable to broadband and high thrust of the present invention, including base
1, table top 4, line slide rail 2, piezoelectric ceramics 3 and arch-shaped displacement amplifying mechanism 6, the two ends of arch-shaped displacement amplifying mechanism 6
Downside is by line slide rail 2 and base 1 slidable connection, and two piezoelectric ceramics 3 are separately positioned on arch-shaped displacement equations machine
Between two ends and the two ends of base 1 of structure 6, the first end of two piezoelectric ceramics 3 is fixing with the two ends of base 1 respectively to be connected, and two
Second end of individual piezoelectric ceramics 3 is fixing with the two ends end face of arch-shaped displacement amplifying mechanism 6 respectively to be connected, and table top 4 is by bolt 5
Fixing with the top of arch-shaped displacement amplifying mechanism 6 and be connected, base 1 and table top 4 are rigid material, the plane at table top 4 place
It is arranged in parallel with the plane at base 1 place.
As it is shown on figure 3, arch-shaped displacement amplifying mechanism 6 includes in 8, two flexible arms 7 of two rigidity inputs and rigidity
End face 9, the first end of two flexible arms 7 is connected with two rigidity inputs 8 respectively, and the second end of two flexible arms 7 is all with just
Property upper surface 9 is fixing connects, the bottom surface of two rigidity inputs 8 and line slide rail 2 slidable connection, two piezoelectric ceramics 3
Second end is fixing with the lateral surface of two rigidity inputs 8 respectively to be connected, and rigidity upper surface 9 is fixing with table top 4 even by bolt
Connecing, two flexible arms 7 are all obliquely installed, and are symmetrical arranged along the axis of rigidity upper surface 9, and flexible arm 7 is spring steel or aluminum
Alloy material, piezoelectric ceramics 3 is stacked piezoelectric ceramics 3 or encapsulation type piezoelectric ceramics 3.
Piezoelectric ceramics 3 produces horizontal vibration displacement, and piezoelectric ceramics 3 promotes rigidity input 8 linearly slide rail 2 to slide,
Distance between two rigidity inputs 8 changes, so that the angle of inclination between two flexible arms 7 changes, makes
The height obtaining rigidity upper surface 9 changes, and produces displacement, so that the table top 4 being connected with rigidity upper surface 9, produces height
Frequency vibration.
Another embodiment is provided
Can only comprise a piezoelectric ceramics 3, the first end of the most arch-shaped displacement amplifying mechanism 6 is solid with the first end of base 1
Fixed connection, the second end of arch-shaped displacement amplifying mechanism 6 is by the second end of piezoelectric ceramics 3 and line slide rail 2 and base 1 even
Connect.
As shown in Figure 4, in order to improve the load capacity of whole vibration table, by multiple identical arch-shaped displacement amplifying mechanisms
6 and piezoelectric ceramics 3 in parallel according to certain layout type, the rigidity upper surface 9 making multiple arch-shaped displacement amplifying mechanism 6 is the most logical
Crossing bolt to be connected with table top 4, the two ends of multiple arch-shaped displacement amplifying mechanisms 6 are all by piezoelectric ceramics 3 and line slide rail 2 and the end
Seat 1 connects.
Technical scheme is not limited to the restriction of above-mentioned specific embodiment, every does according to technical scheme
The technology deformation gone out, within each falling within protection scope of the present invention.
Claims (5)
1. the piezoelectric type vibration platform being applicable to broadband and high thrust, it is characterised in that: include that base, table top, straight line are sliding
Rail, piezoelectric ceramics and arch-shaped displacement amplifying mechanism, the downside at the two ends of described arch-shaped displacement amplifying mechanism is by described
Line slide rail and described base slidable connection, two described piezoelectric ceramics are separately positioned on described arch-shaped displacement amplifying mechanism
Two ends and the two ends of described base between, the first end of two described piezoelectric ceramics respectively fixing with the two ends of described base even
Connecing, the second end of two described piezoelectric ceramics is fixing with the two ends end face of described arch-shaped displacement amplifying mechanism respectively to be connected, institute
State table top to be connected by bolt is fixing with the top of described arch-shaped displacement amplifying mechanism.
A kind of piezoelectric type vibration platform being applicable to broadband and high thrust the most according to claim 1, it is characterised in that: institute
Stating base and described table top is rigid material, the plane at described table top place be arranged in parallel with the plane at described base place.
A kind of piezoelectric type vibration platform being applicable to broadband and high thrust the most according to claim 1, it is characterised in that: institute
State arch-shaped displacement amplifying mechanism and include two rigidity inputs, two flexible arms and rigidity upper surface, two described flexible arms
The first end be connected with two described rigidity inputs respectively, the second end of two described flexible arms all with described rigidity upper surface
Fixing connection, the bottom surface of two described rigidity inputs and described line slide rail slidable connection, two described piezoelectric ceramics
Second end is fixing with the lateral surface of two described rigidity inputs respectively to be connected, and described bolt and institute are passed through in described rigidity upper surface
State the fixing connection of table top.
A kind of piezoelectric type vibration platform being applicable to broadband and high thrust the most according to claim 3, it is characterised in that: two
Individual described flexible arm is all obliquely installed, and is symmetrical arranged along the axis of described rigidity upper surface, and described flexible arm is spring steel
Or aluminum alloy materials.
A kind of piezoelectric type vibration platform being applicable to broadband and high thrust the most according to claim 1, it is characterised in that: institute
Stating piezoelectric ceramics is stacked piezoelectric ceramics or encapsulation type piezoelectric ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610382431.8A CN106092475B (en) | 2016-06-01 | 2016-06-01 | A kind of piezoelectric type vibration platform suitable for broadband and high thrust |
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| CN201610382431.8A CN106092475B (en) | 2016-06-01 | 2016-06-01 | A kind of piezoelectric type vibration platform suitable for broadband and high thrust |
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| CN106092475A true CN106092475A (en) | 2016-11-09 |
| CN106092475B CN106092475B (en) | 2018-10-12 |
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Cited By (6)
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| CN106840565A (en) * | 2017-02-27 | 2017-06-13 | 中国工程物理研究院总体工程研究所 | A kind of Double earthquakes attachment structure |
| CN109443679A (en) * | 2018-11-30 | 2019-03-08 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of vibration experiment |
| 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 |
| 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 |
| CN110174228A (en) * | 2019-06-28 | 2019-08-27 | 中铁二院工程集团有限责任公司 | Magnetic Fuliang rail structure wideband exciter test device |
| CN112196772A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Piezoelectric stack pump with double-rhombus mechanism for amplification |
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| CN109443679A (en) * | 2018-11-30 | 2019-03-08 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of vibration experiment |
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| 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 |
| CN110174228A (en) * | 2019-06-28 | 2019-08-27 | 中铁二院工程集团有限责任公司 | Magnetic Fuliang rail structure wideband exciter test device |
| CN110174228B (en) * | 2019-06-28 | 2024-01-30 | 中铁二院工程集团有限责任公司 | Broadband excitation test device for magnetic levitation beam rail structure |
| CN112196772A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Piezoelectric stack pump with double-rhombus mechanism for amplification |
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| CN106092475B (en) | 2018-10-12 |
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