CN101024217A - Two-bar impaction-regulatable vibration excitor - Google Patents
Two-bar impaction-regulatable vibration excitor Download PDFInfo
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- CN101024217A CN101024217A CN 200710034654 CN200710034654A CN101024217A CN 101024217 A CN101024217 A CN 101024217A CN 200710034654 CN200710034654 CN 200710034654 CN 200710034654 A CN200710034654 A CN 200710034654A CN 101024217 A CN101024217 A CN 101024217A
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- gun barrel
- transmission rod
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- impaction
- gun
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Abstract
This invention discloses a sort of bi-bar concussion tunableness vibration excitor, which includes strike-head, dowel bar, falling weight, spring, gun barrel, and seat. One end of is fastened to the gun-seat. Dowel bar, falling weight and spring install in the gun barrel in turn. The spring is in the bottom of the gun barrel. The strike-head is fastened to dowel bar. There is more than one hole on the dowel bar. Dowel male pin hole on the dowel bar matched to the location hole. The dowel male pin is fastened to gun barrel. This invention has simplicity construction, convenience operation, high precision, which is an ideal testing apparatus for dynamic behavior analysis, modal analysis, non-destructive testing.
Description
Technical field
The present invention relates to a kind of vibrator, particularly a kind of two-bar impaction-regulatable vibration excitor that is used for Structure dynamic characteristics research.
Background technology
Pulse excitation method is a kind of important method of carrying out Structure dynamic characteristics research, compare with other excitation method: test period is short, required instrument and equipment is simple, easy to operate, need not apply rigidity and qualitative restrain to tested structure, thereby can avoid influencing by the dynamic characteristic of geodesic structure owing to getting involved vibrator, be applicable to the test specimen of free constraints, the small-sized test specimen that can be difficult for clamping to having the complex surface shape is tested, test not only can be carried out in the laboratory, also can carry out, be convenient to the gained result of the test is done further mathematical analysis at workshop or use scene.
" the hammering pulse excitation method " that the extensive at present pulse excitation method that adopts is to use the pulse hammer of band power sensor to knock.During test, knock member, write down power pulse signal and other signal of measuring by the power sensor simultaneously, analyze then with pulse hammer.
When testing, sneak into noise interferences unavoidably in the pulse signal of exciting force and the response signal of system under test (SUT) with pulse excitation method.Thereby, repeatedly knock under the same conditions, so that pass through repeatedly population mean, reduce The noise.So, in test process, how to control the impetus position of hammer action, the size and the action direction of power has repeatable accuracy preferably, is a technical problem that urgency is to be solved.
Summary of the invention
For size and the action direction that solves impetus position, power in the existing pulse excitation method is difficult to the accurately technical problem of control, the invention provides a kind of simple in structure, easy to operate, two-bar impaction-regulatable vibration excitor that repeatable accuracy is high.
The technical scheme that the present invention solves the problems of the technologies described above is: comprise gun platform, gun barrel, spring, block stamp, transmission rod, impact head, gun barrel one end is fixed on the gun platform, transmission rod, block stamp, spring is set in the gun barrel successively, spring is positioned at the inner end of gun barrel, impacting head is fixed on the transmission rod, at least be provided with a locating hole on the transmission rod, gun barrel is provided with and the corresponding pin hole of locating hole on the transmission rod, with pin transmission rod is fixed in the gun barrel, gun barrel is provided with the buckle-type slotted eye that is used for the block stamp location, is provided with the plate machine that is fixed together with block stamp in the buckle-type slotted eye.
In the above-mentioned two-bar impaction-regulatable vibration excitor, described transmission rod is provided with three locating holes, and gun barrel is provided with three pin holes corresponding with it.
In the above-mentioned two-bar impaction-regulatable vibration excitor, described bayonet type slotted eye is provided with three bayonet sockets.
Technique effect of the present invention is: 1) the present invention adopts block stamp, spring and transmission rod to form impaction-regulatable vibration excitor, by changing the cross sectional shape of block stamp, thereby change bump exciting force waveform, change the distance between block stamp and the transmission rod, thereby change amplitude of exciting force and duration.2) the present invention is by the compression spring, and the distance and the amount of spring compression of regulating between block stamp and the transmission rod are regulated the control exciting force, can accurately control the size of exciting force.3) transmission rod contact exciting face of the present invention knocks transmission rod by block stamp, and the indirect transfer exciting force is on the exciting face, and exciting position, direction are easy to accurate control.4) firing lock of this vibrator is the peg type trigger, and is simple in structure, easy to operate.
In sum, the present invention can control exciting speed exactly, the position of exciting force, direction and size, thus have higher repeatable accuracy.And required testing equipment is simple, simple to operation, is suitable for on-the-spot the use.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a cutaway view of the present invention.
The structural representation of gun barrel among Fig. 2 the present invention.
The specific embodiment
Referring to Fig. 1, the present invention includes and impact 1, transmission rod 2, pin 4, gun barrel 6, plate machine 7, block stamp 8, spring 9, gun platform 11, handle 12, sensor 13, described gun platform 10 is a disc, gun platform 10 is provided with handle 12, gun barrel 6 one ends are fixed on the disc gun platform 11, transmission rod 2, block stamp 8, spring 9 is set in the gun barrel 6 successively, spring 9 is positioned at the inner end of gun barrel 6, to impact 1 and transmission rod 2 between fixing with bolt 14, transmission rod 2 is provided with three locating holes 5, gun barrel 6 is provided with and the corresponding pin hole 3 of locating hole 5 on the transmission rod 2, with pin 4 transmission rod 2 is fixed in the gun barrel 6, gun barrel 6 is provided with the buckle-type slotted eye 16 that is used for block stamp 8 location, is provided with three bayonet sockets 15 in the buckle-type slotted eye 16, is provided with the plate machine 7 that is fixed together with block stamp in the buckle-type slotted eye 16.
The structure of gun barrel as shown in Figure 2 among the present invention, gun barrel 6 is provided with three pin holes 3 and is used for fixing transmission rod 2 positions, buckle-type slotted eye 16 on the gun barrel 3 is used for fixing trigger 7 positions, and the bayonet socket 15 convenient distances of regulating between block stamp 8 and the transmission rod 2 of 3 diverse locations are arranged.
The course of work of the present invention is divided into two stages: the phase I is the energy storage stage, to impact 1 places on the exciting face (point), press down by manpower, make block stamp 8 spring 9 that contacts with transmission rod 2, make it reach certain pre compressed magnitude, be fixed on trigger 7 on a bayonet socket 15 positions this moment, makes block stamp 8 location; Second stage is an assault phase, according to impacting requirement, transmission rod 2 is moved forward a segment distance, by pin 4 positioning stablities, start trigger 7 then, block stamp 8 is under spring force 9 effects, acceleration through a segment distance, bump transmission rod 2, the stress wave that bump produces arrives on the exciting face (point) along transmission rod 2 disseminations, finishes whole exciting process.
When carrying out Dynamic Structure Testing, need know the response of test specimen under the excitation of different frequency width-pulse, only need shirtsleeve operation can select needed pulse bandwidth within the specific limits in the present invention.Specific implementation is by changing the cross sectional shape of block stamp 8, clashing into the exciting force waveform thereby change; Change the distance between block stamp 8 and the transmission rod 2, thereby change amplitude of exciting force and duration.
Claims (5)
1, a kind of two-bar impaction-regulatable vibration excitor, it is characterized in that: comprise the impact head, transmission rod, block stamp, spring, gun barrel, gun platform, gun barrel one end is fixed on the gun platform, transmission rod, block stamp, spring is set in the gun barrel successively, spring is positioned at the inner end of gun barrel, impacting head is fixed on the transmission rod, at least be provided with a locating hole on the transmission rod, gun barrel is provided with and the corresponding pin hole of locating hole on the transmission rod, with pin transmission rod is fixed in the gun barrel, gun barrel is provided with the buckle-type slotted eye that is used for the block stamp location, is provided with the plate machine that is fixed together with block stamp in the buckle-type slotted eye.
2, two-bar impaction-regulatable vibration excitor according to claim 1 is characterized in that: described transmission rod is provided with three locating holes, and gun barrel is provided with three pin holes corresponding with it.
3, two-bar impaction-regulatable vibration excitor according to claim 1 is characterized in that: described bayonet type slotted eye is provided with three bayonet sockets.
4, two-bar impaction-regulatable vibration excitor according to claim 1 is characterized in that: described impact head is fixed on the transmission rod by being threaded.
5, two-bar impaction-regulatable vibration excitor according to claim 1 is characterized in that: described gun platform is a disc, on the disc gun platform handle is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100346546A CN101024217B (en) | 2007-03-30 | 2007-03-30 | Two-bar impaction-regulating vibration excitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100346546A CN101024217B (en) | 2007-03-30 | 2007-03-30 | Two-bar impaction-regulating vibration excitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101024217A true CN101024217A (en) | 2007-08-29 |
| CN101024217B CN101024217B (en) | 2010-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100346546A Expired - Fee Related CN101024217B (en) | 2007-03-30 | 2007-03-30 | Two-bar impaction-regulating vibration excitor |
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| CN (1) | CN101024217B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410939A (en) * | 2011-12-06 | 2012-04-11 | 西北工业大学 | Hydraulic pulse excitation device for experimental investigation on dynamic characteristics of structure |
| CN102980735A (en) * | 2012-11-15 | 2013-03-20 | 长春富维-江森自控汽车饰件系统有限公司 | Impact testing device of protecting board of automobile seat |
| CN105115689A (en) * | 2015-09-23 | 2015-12-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Pulse excitation apparatus |
| CN112024344A (en) * | 2020-08-07 | 2020-12-04 | 北京电子工程总体研究所 | Trigger type force hammer device and measuring system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106830A (en) * | 1985-09-10 | 1987-03-11 | 陕西机械学院北京研究生部 | Palse vibration excitor |
| FR2732246B1 (en) * | 1995-03-31 | 1997-05-16 | Aaa | SHOCK WAVE GENERATOR AND AUSCULTURING DEVICE OF A STRUCTURE INCORPORATING SUCH A SHOCK WAVE GENERATOR |
| CN201043928Y (en) * | 2007-03-30 | 2008-04-02 | 湖南科技大学 | Adjustable exciting gun |
-
2007
- 2007-03-30 CN CN2007100346546A patent/CN101024217B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410939A (en) * | 2011-12-06 | 2012-04-11 | 西北工业大学 | Hydraulic pulse excitation device for experimental investigation on dynamic characteristics of structure |
| CN102410939B (en) * | 2011-12-06 | 2014-02-26 | 西北工业大学 | Hydraulic pulse excitation device for experimental investigation on dynamic characteristics of structure |
| CN102980735A (en) * | 2012-11-15 | 2013-03-20 | 长春富维-江森自控汽车饰件系统有限公司 | Impact testing device of protecting board of automobile seat |
| CN105115689A (en) * | 2015-09-23 | 2015-12-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Pulse excitation apparatus |
| CN112024344A (en) * | 2020-08-07 | 2020-12-04 | 北京电子工程总体研究所 | Trigger type force hammer device and measuring system |
| CN112024344B (en) * | 2020-08-07 | 2021-12-07 | 北京电子工程总体研究所 | Trigger type force hammer device and measuring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101024217B (en) | 2010-07-14 |
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Granted publication date: 20100714 Termination date: 20130330 |