CN106092475B - A kind of piezoelectric type vibration platform suitable for broadband and high thrust - Google Patents
A kind of piezoelectric type vibration platform suitable for broadband and high thrust Download PDFInfo
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- CN106092475B CN106092475B CN201610382431.8A CN201610382431A CN106092475B CN 106092475 B CN106092475 B CN 106092475B CN 201610382431 A CN201610382431 A CN 201610382431A CN 106092475 B CN106092475 B CN 106092475B
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- arch
- piezoelectric ceramics
- amplifying mechanism
- pedestal
- displacement amplifying
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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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- Physics & Mathematics (AREA)
- 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 platforms suitable for broadband and high thrust, including pedestal, table top, line slide rail, piezoelectric ceramics and arch-shaped displacement amplifying mechanism, the downside at the both ends of arch-shaped displacement amplifying mechanism passes through line slide rail and pedestal slidable connection, two piezoelectric ceramics are separately positioned between the both ends of arch-shaped displacement amplifying mechanism and the both ends of pedestal, the first end of two piezoelectric ceramics is fixedly connected with the both ends of pedestal respectively, and the second end of two piezoelectric ceramics is fixedly connected with the both ends end face of arch-shaped displacement amplifying mechanism respectively.The present invention amplifies by the arch-shaped displacement amplifying mechanism of Piezoelectric Ceramic and transmits the displacement of piezoelectric ceramics, generate the shake table of broadband and high thrust, make arch-shaped displacement amplifying mechanism while the larger geometric dimension of holding, high displacement amplification ratio and high rigidity, also there is higher intrinsic frequency, it is ensured that the output that wideband, high thrust are vibrated.
Description
Technical field
The present invention relates to mechanical environment and field of measuring technique more particularly to a kind of pressures suitable for broadband and high thrust
Electric-type shake table.
Background technology
There are mainly three types of types for currently known vibration testing device：Mechanical shaker, electromagnetic vibration platform and hydraulic pressure
Shake table, wherein mechanical shaker and hydraulic vibration gen are primarily adapted for use in middle low frequency, and the thrust of hydraulic vibration gen is larger；Electromagnetism
The frequency range of formula shake table is wider, and exciting force is also larger.But the volume and weight of these vibration test devices generally compared with
Greatly, and exciting mechanism is complex.
In addition one kind is piezoelectric vibration generator system, the exciting power drive table top generated by the piezoelectric effect of piezoelectric element, work
Frequency can reach few kilohertz, and exciting is simple, weight and volume is small, be particularly suitable for limiting shake table weight and volume
Make stringent occasion.But the exciting force of piezoelectric vibration generator system is small, and acceleration value when low frequency is small.And piezoelectric ceramics belongs to brittleness material
Material, cannot bear pulling force and moment of flexure, therefore cannot be directly using piezoelectric ceramics come exciting.Currently, generally piezoelectricity is made pottery both at home and abroad
Porcelain is encapsulated in compliant mechanism to realize precision actuation, but is concentrated mainly on the application aspect of precisely locating platform, known in these
Innovation and creation although disclosure satisfy that the application demand of precisely locating platform, but output displacement is still smaller, and system
Intrinsic frequency is very low, cannot be directly used to the vibration output of medium-high frequency.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of pressure suitable for broadband and high thrust
Electric-type shake table.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of piezoelectric type vibration platform suitable for broadband and high thrust, including pedestal, table top, line slide rail, piezoelectricity pottery
Porcelain and arch-shaped displacement amplifying mechanism, the downside at the both ends of the arch-shaped displacement amplifying mechanism by the line slide rail with
The pedestal slidable connection, two piezoelectric ceramics are separately positioned on both ends and the institute of the arch-shaped displacement amplifying mechanism
Between the both ends for stating pedestal, the first end of two piezoelectric ceramics is fixedly connected with the both ends of the pedestal respectively, two institutes
The second end for stating piezoelectric ceramics is fixedly connected with the both ends end face of the arch-shaped displacement amplifying mechanism respectively, and the table top passes through
Bolt is fixedly connected with the top of the arch-shaped displacement amplifying mechanism.
Specifically, the pedestal and the table top are rigid material, the plane where the table top and the pedestal institute
Plane be arranged in parallel.
Specifically, the arch-shaped displacement amplifying mechanism includes two rigid input terminals, two flexible arms and rigid upper end
The first end in face, two flexible arms is connect with two rigid input terminals respectively, the second end of two flexible arms
It is fixedly connected with the rigid upper surface, the bottom surface of two rigid input terminals and the line slide rail slidable connection,
The second end of two piezoelectric ceramics is fixedly connected with the lateral surface of two rigid input terminals respectively, the rigidity upper end
Face is fixedly connected by the bolt with the table top.
Specifically, two flexible arms are obliquely installed, and are symmetrical arranged along the central axes of the rigid upper surface, institute
It is spring steel or aluminum alloy materials to state flexible arm.
Specifically, the piezoelectric ceramics is stacked piezoelectric ceramics or encapsulation type piezoelectric ceramics.
The beneficial effects of the present invention are：
A kind of piezoelectric type vibration platform suitable for broadband and high thrust of the present invention passes through Piezoelectric Ceramic arch bridge morpheme
Enlarger is moved to amplify and transmit the displacement of piezoelectric ceramics, and then generates the shake table of broadband and high thrust, is made arch-shaped
Displacement amplifying mechanism also has higher intrinsic while the larger geometric dimension of holding, high displacement amplification ratio and high rigidity
Frequency, it is ensured that the output that wideband, high thrust are vibrated.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of piezoelectric type vibration platform suitable for broadband and high thrust of the present invention；
Fig. 2 is a kind of front view of piezoelectric type vibration platform suitable for broadband and high thrust of the present invention；
Fig. 3 is the structural schematic diagram of arch-shaped displacement amplifying mechanism of the present invention；
Fig. 4 is a kind of knot of one embodiment of piezoelectric type vibration platform suitable for broadband and high thrust of the present invention
Structure schematic diagram.
In figure：1- pedestals, 2- line slide rails, 3- piezoelectric ceramics, 4- table tops, 5- bolts, the arch-shaped displacement amplifying mechanisms of 6-,
7- flexible arms, 8- rigidity input terminals, 9- rigidity upper surface.
Specific implementation mode
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 suitable for broadband and high thrust of the invention, including pedestal
1, table top 4, line slide rail 2, piezoelectric ceramics 3 and arch-shaped displacement amplifying mechanism 6, the both ends of arch-shaped displacement amplifying mechanism 6
Downside is separately positioned on arch-shaped displacement equations machine by line slide rail 2 and 1 slidable connection of pedestal, two piezoelectric ceramics 3
Between the both ends and the both ends of pedestal 1 of structure 6, the first end of two piezoelectric ceramics 3 is fixedly connected with the both ends of pedestal 1 respectively, and two
The second end of a piezoelectric ceramics 3 is fixedly connected with the both ends end face of arch-shaped displacement amplifying mechanism 6 respectively, and table top 4 passes through bolt 5
It is fixedly connected with the top of arch-shaped displacement amplifying mechanism 6, pedestal 1 and table top 4 are rigid material, the plane where table top 4
It is arranged in parallel with the plane where pedestal 1.
As shown in figure 3, arch-shaped displacement amplifying mechanism 6 includes on two rigid input terminals 8, two flexible arms 7 and rigidity
End face 9, the first ends of two flexible arms 7 are connect with two rigid input terminals 8 respectively, the second ends of two flexible arms 7 with just
Property upper surface 9 be fixedly connected, bottom surface and 2 slidable connection of line slide rail of two rigid input terminals 8, two piezoelectric ceramics 3
Second end is fixedly connected with the lateral surface of two rigid input terminals 8 respectively, and rigid upper surface 9 is fixed by bolt and table top 4 to be connected
It connects, two flexible arms 7 are obliquely installed, and are symmetrical arranged along the central axes of rigid upper surface 9, and flexible arm 7 is spring steel or aluminium
Alloy material, piezoelectric ceramics 3 are stacked piezoelectric ceramics 3 or encapsulation type piezoelectric ceramics 3.
Piezoelectric ceramics 3 generates lateral vibration displacement, and piezoelectric ceramics 3 pushes rigid input terminal 8 to be slided along line slide rail 2,
The distance between two rigid input terminals 8 change, and to make the angle of inclination between two flexible arms 7 change, make
The height for obtaining rigid upper surface 9 changes, and generates displacement, so that the table top 4 being connect with rigid upper surface 9, generates high
Frequency vibration.
Another embodiment is provided
Can include only a piezoelectric ceramics 3, i.e. the first end of arch-shaped displacement amplifying mechanism 6 and the first end of pedestal 1 is solid
The second end of fixed connection, arch-shaped displacement amplifying mechanism 6 is connected by piezoelectric ceramics 3 and line slide rail 2 and the second end of pedestal 1
It connects.
As shown in figure 4, in order to improve the load capacity of entire shake table, by multiple identical arch-shaped displacement amplifying mechanisms
6 and piezoelectric ceramics 3 it is in parallel according to certain layout type, keep the rigid upper surface 9 of multiple arch-shaped displacement amplifying mechanisms 6 logical
It crosses bolt to connect with table top 4, the both ends of multiple arch-shaped displacement amplifying mechanisms 6 pass through piezoelectric ceramics 3 and line slide rail 2 and bottom
Seat 1 connects.
Technical scheme of the present invention is not limited to the limitation of above-mentioned specific embodiment, every to do according to the technique and scheme of the present invention
The technology deformation gone out, each falls within protection scope of the present invention.
Claims (3)
1. a kind of piezoelectric type vibration platform suitable for broadband and high thrust, it is characterised in that：It is slided including pedestal, table top, straight line
Rail, piezoelectric ceramics and arch-shaped displacement amplifying mechanism, the downside at the both ends of the arch-shaped displacement amplifying mechanism is described in
Line slide rail and the pedestal slidable connection, two piezoelectric ceramics are separately positioned on the arch-shaped displacement amplifying mechanism
Both ends and the both ends of the pedestal between, the first ends of two piezoelectric ceramics is fixed with the both ends of the pedestal respectively to be connected
It connects, the second end of two piezoelectric ceramics is fixedly connected with the both ends end face of the arch-shaped displacement amplifying mechanism respectively, institute
It states table top to be fixedly connected with the top of the arch-shaped displacement amplifying mechanism by bolt, the pedestal and the table top are rigid
Property material, the plane where the table top are arranged in parallel with the plane where the pedestal；
The arch-shaped displacement amplifying mechanism includes two rigid input terminals, two flexible arms and rigid upper surface, described in two
The first end of flexible arm is connect with two rigid input terminals respectively, the second ends of two flexible arms with the rigidity
Upper surface is fixedly connected, the bottom surface of two rigid input terminals and the line slide rail slidable connection, two piezoelectricity
The second end of ceramics is fixedly connected with the lateral surface of two rigid input terminals respectively, and the rigidity upper surface passes through the spiral shell
Bolt is fixedly connected with the table top.
2. a kind of piezoelectric type vibration platform suitable for broadband and high thrust according to claim 1, it is characterised in that：Two
A flexible arm is obliquely installed, and is symmetrical arranged along the central axes of the rigid upper surface, and the flexible arm is spring steel
Or aluminum alloy materials.
3. a kind of piezoelectric type vibration platform suitable for broadband and high thrust according to claim 1, it is characterised in that：Institute
It is stacked piezoelectric ceramics or encapsulation type piezoelectric ceramics to state 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 CN106092475A (en) | 2016-11-09 |
| CN106092475B true CN106092475B (en) | 2018-10-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840565B (en) * | 2017-02-27 | 2023-08-15 | 中国工程物理研究院总体工程研究所 | Double-vibrating table connecting 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 |
| CN110057524B (en) * | 2019-05-27 | 2023-11-03 | 中国工程物理研究院总体工程研究所 | Broadband double-bench parallel pushing test system based on sliding table |
| 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 |
| 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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| US7227295B2 (en) * | 2005-02-04 | 2007-06-05 | Asm Assembly Automation Ltd. | Piezoelectric device with amplifying mechanism |
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| CN101136578A (en) * | 2007-10-25 | 2008-03-05 | 上海交通大学 | Permanent-magnet telescopic mechanism |
| CN102446562A (en) * | 2011-08-29 | 2012-05-09 | 华南理工大学 | Micro-displacement amplifying mechanism based on compliant mechanism |
| CN203339985U (en) * | 2013-06-03 | 2013-12-11 | 吉林大学 | Novel looper type bionic crawling piezoelectric precise driving platform |
| CN103475261A (en) * | 2013-09-24 | 2013-12-25 | 浙江师范大学 | Bionic piezoelectric foot type driver |
| DE102014116034A1 (en) * | 2013-11-06 | 2015-05-07 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Device and method for determining mechanical properties of a pliable object to be measured |
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