CN204924606U - Device is applyed to direction in space exciting force - Google Patents
Device is applyed to direction in space exciting force Download PDFInfo
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- CN204924606U CN204924606U CN201520728223.XU CN201520728223U CN204924606U CN 204924606 U CN204924606 U CN 204924606U CN 201520728223 U CN201520728223 U CN 201520728223U CN 204924606 U CN204924606 U CN 204924606U
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- piezoelectric stack
- holding screw
- slide
- exciting force
- stack support
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Abstract
The utility model relates to a device is applyed to direction in space exciting force belongs to vibration testing, the exciting force is applyed and the test instrument field. The overall arrangement is the planer -type, and the vertical motion body can be followed perpendicular guide rail and reciprocated, and horizontal migration and turning block can rotate and horizontal migration, and the rotation of disc can be realized winding by the piezoelectric stack support, the output of piezoelectric stack through promoting to realize displacement and power with hinged joint's micro -displacement, and pressure sensor's displacement can be enlargied by the long arm of lever mechanism of amplification. Piezoelectric stack that the advantage is that novel structure is stable, exciting frequency is high, easy operation, output displacement are adjustable, can install different length and specification, and can the space each to launching the excitation to the target.
Description
Technical field
The utility model belongs to vibration-testing, exciting force applies and testing tool measuring error demarcates field, particularly a kind of direction in space exciting force bringing device based on piezoelectric stack.
Background technology
Vibration-testing test is a fundamental test in field of engineering technology, is also one of important means of industrial products research and development.Parts in commercial production, component and even complete machine substantially all need could determine its mechanical property such as reliability, intensity through vibration-testing test.Therefore, vibration-testing test is widely used at many important engineering fields, as the calibration experiment of various force measuring instrument device, judges the dynamic strength of each parts and the performance, reliability etc. of various plant equipment.So the key equipment that vibrator is tested as vibration-testing, the height of its performance directly has influence on progress and the development of every engineering.
Vibrator is the device manufacturing vibration source, the exciting force produced by vibrator acts on a certain region of subjects, subjects is made to produce forced vibration, so, vibrator is requisite device in testing with sensor, instrument calibration and checkout in vibration test, and it can make to be swashed test specimen and be subject to required dynamic force, displacement or acceleration.In power measuring error calibration experiment, can obtain the measuring error by sharp sensor or instrument by more known exciting force and the power measured by sharp sensor or instrument, this measuring accuracy for improved force survey sensor and instrument has important directive significance.Common vibrator has mechanical type, electromagnetic type and electric-liquid type, and these vibrator drive unit output bands are narrow, can not meet the requirement of precision engineering field high frequency, micro-displacement excitation.And piezoelectric stack has very large operating frequency range, the driver based on piezoelectric stack can be used for the high-frequency drive realizing nano level displacement, power, acceleration in precision optical machinery and instrument.The problems such as current business-like piezoelectric vibration exciter ubiquity structural instability, output displacement can not regulate, exciting force direction can not change, cause these vibrator to be difficult to meet the performance required by Cont rol Method of Precise Force surveying instrument calibration experiment,
Summary of the invention
The utility model provides a kind of direction in space exciting force bringing device, and to solve, structural instability, excited frequency that current vibrator exists are low, output displacement can not free adjustment, the exciting force direction problem that can not change in space.
The technical scheme that the utility model is taked is: vertical guide rail one and vertical guide rail two are arranged on the pillar on flame base both sides respectively by holding screw two and holding screw three, catenary motion body is arranged on vertical guide rail one and vertical guide rail two, can move up and down along vertical guide rail one and vertical guide rail two, and by holding screw one and holding screw four fixed position, to move horizontally and the column part of turning block and catenary motion body is slidably connected, and this moves horizontally and turning block is also rotationally connected with the column part of this catenary motion body, this move horizontally and the position of turning block on the column part of catenary motion body by holding screw five, holding screw ten is fixed, disk is fixed on and moves horizontally and the bottom of turning block, piezoelectric stack support is arranged on the lower end of disk by nut and pad, and can rotate by the round boss around disk lower end, piezoelectric stack support is fixed by the holding screw six be arranged on piezoelectric stack support and holding screw 11 relative to the position of disk, slide base plate is arranged on the below of piezoelectric stack support, slide is arranged on the below of slide base plate, can axially move along the dovetail groove of slide base plate, and by the holding screw seven on slide, holding screw nine and the tightening of slide base plate, piezoelectric stack is clamped between the micromotion platform of slide and piezoelectric stack support by slide, the movable block that piezoelectric stack is promoted on slide by the pre-loading screw eight on slide carries out pretension, the matrix of lever amplifying mechanism is arranged on the front end of piezoelectric stack support by two holding screws 12, micro-platform that turns of lever amplifying mechanism is arranged on the micromotion platform of piezoelectric stack support by a holding screw 16, micro-platform that turns that the micromotion platform of piezoelectric stack support promotes lever amplifying mechanism under the excitation of piezoelectric stack moves together, piezoelectric stack provides exciting force, pressure transducer clamp system is long-armed through lever amplifying mechanism, and along long-armed movement, and by holding screw 13 and holding screw 15 fixed position, pressure transducer is clamped by the leverage on pressure transducer clamp system by a holding screw 14,
The movable block of described slide is connected on slide by a pair board-type flexible hinge, the micromotion platform of piezoelectric stack support is connected on piezoelectric stack support by four parallel board-type flexible hinges, a pair board-type flexible hinge is made to produce distortion by tightening pre-loading screw eight, thus promoting the movable block of slide, piezoelectric stack is clamped between the movable block of slide and the micromotion platform of piezoelectric stack support;
Described lever amplifying mechanism long-armed passes through a board-type flexible hinge around the matrix of lever amplifying mechanism and rotates, and micro-platform that turns of lever amplifying mechanism is by the long-armed rotation of a flexible hinge around lever amplifying mechanism; Holding screw 14 is threaded with the leverage of pressure transducer clamp system;
The structure of described pressure transducer clamp system is: leverage is connected with matrix by flexible hinge.
Advantage of the present utility model and beneficial effect: novel structure, device adopts flame layout, has two support cylinders, thus makes Stability Analysis of Structures; Adopt piezoelectric stack as vibration source, piezoelectric stack has that vibration frequency is high, positioning precision advantages of higher; Because the output displacement of piezoelectric stack is less, this device have employed the output displacement of lever amplifying mechanism to piezoelectric stack and amplifies, thus can adapt to the requirement of different calibration experiment, and enlargement factor is step-less adjustment; The device of the utility model has four degree of freedom: adopt catenary motion body to realize Y-direction and move, employing moves horizontally and turning block realizes X to movement and the rotation around X-axis, and adopt piezoelectric stack support to realize the rotation of Y-axis around fixed disc, so, respectively can launch exciting to target in space, effectively expand the scope of application of this vibrator.Displacement between slide and slide base plate is adjustable, thus can install the piezoelectric stack of different length and specification.The utility model is applicable to the calibration experiment etc. of the high frequency dynamic force measurement error of one or more dimensions precision force transducer or force measuring instrument.
Accompanying drawing explanation
Fig. 1 is that exciting force is made a concerted effort and the schematic diagram of XYZ three-way excitation power component;
Fig. 2 is a kind of schematic diagram of direction in space exciting force bringing device;
Fig. 3 is a kind of schematic diagram of direction in space exciting force bringing device;
Fig. 4 is a kind of schematic diagram of direction in space exciting force bringing device;
Fig. 5 is a kind of front elevation of direction in space exciting force bringing device;
Fig. 6 is a kind of vertical view of direction in space exciting force bringing device;
Fig. 7 is a kind of left view of direction in space exciting force bringing device;
Fig. 8 is a kind of cut-open view of direction in space exciting force bringing device;
Schematic diagram when Fig. 9 is a kind of direction in space exciting force bringing device applying direction in space exciting force;
Schematic diagram when Figure 10 is a kind of direction in space exciting force bringing device applying direction in space exciting force;
Figure 11 is a kind of flame base schematic diagram of direction in space exciting force bringing device;
Figure 12 is a kind of piezoelectric stack support schematic diagram of direction in space exciting force bringing device;
Figure 13 is a kind of exciting core component schematic diagram of direction in space exciting force bringing device;
Figure 14 is the cooperation schematic diagram of a kind of slide of direction in space exciting force bringing device, piezoelectric stack, piezoelectric stack support;
Figure 15 is a kind of displacement equations assembly schematic diagram of direction in space exciting force bringing device;
Figure 16 is a kind of piezoelectric stack support schematic diagram of direction in space exciting force bringing device;
Figure 17 is a kind of slide schematic diagram of direction in space exciting force bringing device;
Figure 18 is a kind of lever amplifying mechanism schematic diagram of direction in space exciting force bringing device;
Figure 19 is a kind of catenary motion body schematic diagram of direction in space exciting force bringing device;
Figure 20 is moving horizontally and turning block schematic diagram of a kind of direction in space exciting force bringing device;
Figure 21 is a kind of disk schematic diagram of direction in space exciting force bringing device;
Figure 22 is a kind of pressure transducer clamp system schematic diagram of direction in space exciting force bringing device;
In figure: flame base 1, catenary motion body 2, holding screw 1, vertical guide rail 1, holding screw 25, holding screw 36, vertical guide rail 27, move horizontally and turning block 8, holding screw 49, holding screw 5 10, disk 11, holding screw 6 12, piezoelectric stack support 13, lever amplifying mechanism 14, pressure transducer clamp system 15, pressure transducer 16, slide base plate 17, piezoelectric stack 18, slide 19, holding screw 7 20, holding screw 8 21, holding screw 9 22, holding screw 10, holding screw 11, holding screw 12, holding screw 13, holding screw 14, holding screw 15, pad 29, nut 30, holding screw 16.
Embodiment
Vertical guide rail 1 and vertical guide rail 27 are arranged on the pillar on flame base 1 both sides respectively by holding screw 25 and holding screw 36, catenary motion body 2 is arranged on vertical guide rail 1 and vertical guide rail 27, can move up and down along vertical guide rail 1 and vertical guide rail 27, and by holding screw 1 and holding screw 49 fixed position, to move horizontally and turning block 8 is slidably connected with the column part of catenary motion body 2, and this moves horizontally and turning block 8 is also rotationally connected with the column part of this catenary motion body 2, this move horizontally and the position of turning block 8 on the column part of catenary motion body 2 by holding screw 5 10, holding screw 10 is fixed, disk 11 is fixed on and moves horizontally and the bottom of turning block 8, piezoelectric stack support 13 is arranged on the lower end of disk 11 by nut 30 and pad 29, and can rotate by the round boss around disk 11 lower end, piezoelectric stack support 13 is fixed by the holding screw 6 12 be arranged on piezoelectric stack support 13 and holding screw 11 relative to the position of disk 11, slide base plate 17 is arranged on the below of piezoelectric stack support 13, slide 19 is arranged on the below of slide base plate 17, can axially move along the dovetail groove of slide base plate 17, and by the holding screw 7 20 on slide 19, holding screw 9 22 and slide base plate 17 tightening, piezoelectric stack 18 is clamped between the micromotion platform 1301 of slide 19 and piezoelectric stack support 13 by slide 19, the movable block 1901 that piezoelectric stack 18 is promoted on slide 19 by the pre-loading screw 8 21 on slide 19 carries out pretension, the matrix 1403 of lever amplifying mechanism 14 is arranged on the front end of piezoelectric stack support 13 by two holding screws 12, micro-platform 1402 that turns of lever amplifying mechanism 14 is arranged on the micromotion platform 1301 of piezoelectric stack support 13 by a holding screw 16, micro-platform 1402 that turns that the micromotion platform 1301 of piezoelectric stack support 13 promotes lever amplifying mechanism 14 under the excitation of piezoelectric stack 18 moves together, piezoelectric stack 18 provides exciting force, pressure transducer clamp system 15 is through long-armed 1401 of lever amplifying mechanism 14, and move along long-armed 1401, and by holding screw 13 and holding screw 15 fixed position, pressure transducer 16 is clamped by the leverage 1501 on pressure transducer clamp system 15 by a holding screw 14,
The movable block 1901 of described slide 19 is connected on slide 19 by a pair board-type flexible hinge 1902, the micromotion platform 1301 of piezoelectric stack support 13 is connected on piezoelectric stack support 13 by four parallel board-type flexible hinges 1302, a pair board-type flexible hinge 1902 is made to produce distortion by tightening pre-loading screw 8 21, thus promote the movable block 1901 of slide 19, piezoelectric stack 18 is clamped between the movable block 1901 of slide 19 and the micromotion platform 1301 of piezoelectric stack support 13
Long-armed 1401 of described lever amplifying mechanism 14 is rotated by the matrix 1403 of a board-type flexible hinge 1404 around lever amplifying mechanism 14, and micro-platform 1402 that turns of lever amplifying mechanism 14 is rotated around long-armed 1401 of lever amplifying mechanism 14 by a flexible hinge 1404; Holding screw 14 is threaded with the leverage 1501 of pressure transducer clamp system 15;
The structure of pressure transducer clamp system 15 is: leverage 1501 is connected with matrix 1503 by flexible hinge 1502.
When piezoelectric stack 18 is energized, one end contacted with the movable block 1901 of slide of piezoelectric stack 18 can be considered as transfixion, and piezoelectric stack 18 promotes the micromotion platform 1301 of piezoelectric stack support 13 and lever amplifying mechanism 14 moves back and forth; By tightening the holding screw 14 on the leverage 1501 of pressure transducer clamp system 15, leverage 1501 will rotate around a flexible hinge 1502 relative to the matrix 1503 of pressure transducer clamp system 15, thus clamping pressure sensor 16; Pressure transducer 16 acts directly on excited object, directly can being measured by pressure transducer 16 with joint efforts of the three-way excitation power suffered by object.
Principle of work of the present utility model, see Fig. 1:
Vertical (Y-direction) movable body is moved to suitable height along two vertical guide rails, and uses holding screw fixed position; By level (X to), the column part of mobile and turning block vertically movable body moves to suitable position; To move horizontally and turning block rotates a certain angle around the column part of catenary motion body, and use holding screw fixed position, make the angle of pressure transducer axis and horizontal direction be α; Piezoelectric stack support is rotated certain angle beta around fixed disc, and uses holding screw fixed position; Pressure transducer clamp system is moved to suitable position along the long-armed of lever amplifying mechanism, and uses holding screw fixed position; Make pressure transducer with by sharp object contact; Slide is moved on to suitable position contact with piezoelectric stack, and with pre-loading screw, pretension is carried out to piezoelectric stack; To piezoelectric stack energising, if the exciting force of piezoelectric stack that pressure transducer is measured is F, then X to exciting force be F
x=Fsin β, the exciting force of Y-direction is F
y=Fcos β sin α, the exciting force of Z-direction is F
z=Fcos β cos α.
Claims (4)
1. a direction in space exciting force bringing device, it is characterized in that: vertical guide rail one and vertical guide rail two are arranged on the pillar on flame base both sides respectively by holding screw two and holding screw three, catenary motion body is arranged on vertical guide rail one and vertical guide rail two, can move up and down along vertical guide rail one and vertical guide rail two, and by holding screw one and holding screw four fixed position, to move horizontally and the column part of turning block and catenary motion body is slidably connected, and this moves horizontally and turning block is also rotationally connected with the column part of this catenary motion body, this move horizontally and the position of turning block on the column part of catenary motion body by holding screw five, holding screw ten is fixed, disk is fixed on and moves horizontally and the bottom of turning block, piezoelectric stack support is arranged on the lower end of disk by nut and pad, and can rotate by the round boss around disk lower end, piezoelectric stack support is fixed by the holding screw six be arranged on piezoelectric stack support and holding screw 11 relative to the position of disk, slide base plate is arranged on the below of piezoelectric stack support, slide is arranged on the below of slide base plate, can axially move along the dovetail groove of slide base plate, and by the holding screw seven on slide, holding screw nine and the tightening of slide base plate, piezoelectric stack is clamped between the micromotion platform of slide and piezoelectric stack support by slide, the movable block that piezoelectric stack is promoted on slide by the pre-loading screw eight on slide carries out pretension, the matrix of lever amplifying mechanism is arranged on the front end of piezoelectric stack support by two holding screws 12, micro-platform that turns of lever amplifying mechanism is arranged on the micromotion platform of piezoelectric stack support by a holding screw 16, micro-platform that turns that the micromotion platform of piezoelectric stack support promotes lever amplifying mechanism under the excitation of piezoelectric stack moves together, piezoelectric stack provides exciting force, pressure transducer clamp system is long-armed through lever amplifying mechanism, and along long-armed movement, and by holding screw 13 and holding screw 15 fixed position, pressure transducer is clamped by the leverage on pressure transducer clamp system by a holding screw 14.
2. a kind of direction in space exciting force bringing device according to claim 1, it is characterized in that: the movable block of described slide is connected on slide by a pair board-type flexible hinge, the micromotion platform of piezoelectric stack support is connected on piezoelectric stack support by four parallel board-type flexible hinges, a pair board-type flexible hinge is made to produce distortion by tightening pre-loading screw eight, thus promoting the movable block of slide, piezoelectric stack is clamped between the movable block of slide and the micromotion platform of piezoelectric stack support.
3. a kind of direction in space exciting force bringing device according to claim 1, it is characterized in that: described lever amplifying mechanism long-armed passes through a board-type flexible hinge around the matrix of lever amplifying mechanism and rotate, and micro-platform that turns of lever amplifying mechanism is by the long-armed rotation of a flexible hinge around lever amplifying mechanism; Holding screw 14 is threaded with the leverage of pressure transducer clamp system.
4. a kind of direction in space exciting force bringing device according to claim 1, is characterized in that: the structure of described pressure transducer clamp system is: leverage is connected with matrix by flexible hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728223.XU CN204924606U (en) | 2015-09-19 | 2015-09-19 | Device is applyed to direction in space exciting force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728223.XU CN204924606U (en) | 2015-09-19 | 2015-09-19 | Device is applyed to direction in space exciting force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924606U true CN204924606U (en) | 2015-12-30 |
Family
ID=54973722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520728223.XU Withdrawn - After Issue CN204924606U (en) | 2015-09-19 | 2015-09-19 | Device is applyed to direction in space exciting force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204924606U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043702A (en) * | 2015-09-19 | 2015-11-11 | 吉林大学 | Exciting force applying method and device in spatial direction |
| CN108972302A (en) * | 2018-10-01 | 2018-12-11 | 长春工业大学 | A kind of disresonance type vibration auxiliary polishing device and method |
| CN109139792A (en) * | 2018-10-23 | 2019-01-04 | 珠海格力智能装备有限公司 | Damper and overspeed testing machine with same |
| CN113432818A (en) * | 2021-06-25 | 2021-09-24 | 上海交通大学 | Programmable force-excited blade vibration testing device |
-
2015
- 2015-09-19 CN CN201520728223.XU patent/CN204924606U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043702A (en) * | 2015-09-19 | 2015-11-11 | 吉林大学 | Exciting force applying method and device in spatial direction |
| CN105043702B (en) * | 2015-09-19 | 2017-08-11 | 吉林大学 | A kind of direction in space exciting force applying method and device |
| CN108972302A (en) * | 2018-10-01 | 2018-12-11 | 长春工业大学 | A kind of disresonance type vibration auxiliary polishing device and method |
| CN108972302B (en) * | 2018-10-01 | 2024-01-23 | 长春工业大学 | Non-resonant vibration auxiliary polishing device and method |
| CN109139792A (en) * | 2018-10-23 | 2019-01-04 | 珠海格力智能装备有限公司 | Damper and overspeed testing machine with same |
| CN113432818A (en) * | 2021-06-25 | 2021-09-24 | 上海交通大学 | Programmable force-excited blade vibration testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151230 Effective date of abandoning: 20170811 |