CN102735413A - Four-vibration table two-direction joint vibration device - Google Patents
Four-vibration table two-direction joint vibration device Download PDFInfo
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- CN102735413A CN102735413A CN2012101971757A CN201210197175A CN102735413A CN 102735413 A CN102735413 A CN 102735413A CN 2012101971757 A CN2012101971757 A CN 2012101971757A CN 201210197175 A CN201210197175 A CN 201210197175A CN 102735413 A CN102735413 A CN 102735413A
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Abstract
The invention provides a four-vibration table two-direction joint vibration device. The device comprises a tested piece, a horizontal vibration table, a vertical vibration table, a test clamp which can be loaded bi-directionally, a mechanical decoupling device and a suspension device thereof, a vibration table switching adjustment device and a vibration table support seat. By using the device, horizontal vibration excitation and vertical vibration excitation can be applied to the tested piece at the same time; moreover, the movement in the two directions can be decoupled well by the mechanical decoupling device and the suspension device thereof so that the eccentric moment of the vibration table is avoided; simultaneously, the problem of freely adjusting the positions of the vibration tables in the two directions is also solved by the vibration table switching adjustment device; and therefore, the aim of performing a four-vibration table two-direction joint vibration test is fulfilled.
Description
Technical field
The present invention relates to the vibration test technology, particularly a kind of four shaking tables, two directions associating vibrating device.
Background technology
Vibration test is the important component part of product dynamic environmental test and fail-test, is a kind of means of the true environment for use of analog equipment, is a kind of effective method in product design and the evaluation.The existing vibration test overwhelming majority is carried out on vibration experiment at folk prescription, but in fact product residing vibration environment in use and transportation is not unidirectional, but multidirectional, has the relation that intercouples between all directions vibration.But all the time; Receive vibration rig and technology limitation; In testing laboratory, can't realize multidirectional vibration environment, can only suppose that all directions vibration is independently of one another, the folk prescription that carries out is successively simulated the multi-direction vibration environment in the use to vibration test.Such simulation test can't expose some to the more sensitive fault mode of direction of vibration, can't realize the accurate superposition of different directions oscillating load, makes by test specimen overtesting or undertesting to occur, has influenced the reliability assessment that receives trial product.
Summary of the invention
The present invention be directed to that the problems referred to above propose, its purpose be to provide a kind of can be respectively from both direction to applied the shaking table of excitation by test specimen, come multi-direction vibration environment in the simulating actual conditions.
In order to achieve the above object, the invention provides a kind of four shaking tables, two directions associating vibrating device, comprise by test specimen, shaking table, can two-way loading test fixture, mechanically decoupled device and suspender thereof and shaking table bearing:
Said shaking table comprises each two of horizontal direction shaking table and vertical direction shaking tables;
Said mechanically decoupled device comprises each two in the mechanically decoupled device of mechanically decoupled device and the vertical direction of horizontal direction; It is connected with an end of said two horizontal direction shaking tables and two vertical direction shaking tables respectively, and the mechanically decoupled device center of gravity place card of said horizontal direction has a mechanically decoupled suspender;
Said test fixture can two-wayly load; Comprise snap ring and following snap ring; The said snap ring of going up is fixed by the test specimen chucking said with following snap ring; Switching piece in one bottom is arranged at said snap ring down bottom, with securing member its other end with the mechanically decoupled device of said vertical direction is connected, and the said snap ring of going up is connected through the end of a coupling arrangement with the mechanically decoupled device of said horizontal direction respectively with following snap ring one side; The mechanically decoupled device other end of said horizontal direction is connected with said horizontal direction vibration table surface;
Said horizontal direction shaking table is positioned on the said shaking table bearing.
Further also comprise several shaking table switching adjusting gears; Said shaking table switching adjusting gear is a convex; Its both sides respectively have a lengthwise position adjustment hole to be connected with said shaking table bearing; In order to regulate relative position between said shaking table switching adjusting gear and the said shaking table bearing; In the middle of the said shaking table switching adjusting gear is several lateral attitude adjustment holes, and it is connected with said horizontal direction shaking table bottom, in order to regulate relative position between said horizontal direction shaking table and the said shaking table switching adjusting gear.
Said mechanically decoupled suspender comprises to be hung and left and right semicircle snap ring; Said left and right semicircle snap ring tightens the center of gravity place of the mechanically decoupled device of said horizontal direction; Its upper and lower side is fastening with it with securing member respectively; Its upper end also has a through hole to be connected with said hanging through securing member, and said hanging sling said left and right semicircle snap ring.Said coupling arrangement comprises a pair of upper and lower switching piece; Said upper and lower switching piece one end is that cambered surface is fitted with following snap ring with the said snap ring of going up respectively; The other end is connected through the end of securing member with the mechanically decoupled device of said horizontal direction for the semicircle joint face that is combined into circle.
The upper and lower switching piece other end of said coupling arrangement can arbitrary shape be combined into joint face and be connected with an end of the mechanically decoupled device of said horizontal direction.
Said bottom switching piece is that circle can be directly fixed on the said snap ring down.
Said bottom switching piece can have any shape.
Said hanging can be elastic rope or spring.
Said mechanically decoupled device is a double-strand chain static pressure bulb formula.
The present invention's beneficial effect compared with prior art:
(1) the present invention since designed can two-way loading test fixture; So the shaking table of level and vertical two directions can be provided; Can realize applied level and the vertically vibrational excitation of both direction simultaneously by test specimen; And test fixture can be simultaneously with both direction on mechanically decoupled device link to each other, and then realization is to the transmission of vibrational excitation on the both direction.The motion of two directions can realize decoupling zero preferably and can not produce eccentric moment to shaking table through mechanically decoupled device and suspender thereof;
(2) mechanically decoupledly guaranteed on the transfer of vibration direction, to have enough rigidity, can on the non-vibration direction of transfer, not produce constraint again freedom of motion.
(3) mechanically decoupled suspender is equipped with elastic rope, in order to offset mechanically decoupled deadweight, has solved the mechanically decoupled device of horizontal direction, and its deadweight can make level produce eccentric moment to the moving-coil of shaking table, influences the problem of the exciting of shaking table.
(4) shaking table switching adjusting gear; Can realize being fixed on shaking table on the support; Can realize locational adjustment in the certain limit again, solve the problem that shaking table two direction positions are freely adjusted, thereby realize carrying out the purpose that four shaking tables, two directions are united vibration.
Description of drawings
Included accompanying drawing is used to provide the further understanding to the embodiment of the invention, and the part that it has constituted instructions is used for the illustration embodiments of the invention, and comes together to explain principle of the present invention with text description.Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is four shaking tables, two a directions associating vibrating device synoptic diagram;
Fig. 2 mainly invents the synoptic diagram of parts in system;
Fig. 3 is the three-view diagram of the last snap ring of test fixture;
Fig. 4 is the three-view diagram of the following snap ring of test fixture;
Fig. 5 is the three-view diagram of mechanically decoupled suspender;
Fig. 6 is the three-view diagram of the upper and lower switching piece of coupling arrangement;
Fig. 7 is the three-view diagram of shaking table switching adjusting gear.
Wherein:
1 is the specimen? 2. Shakers? 3. Fixture? 4 horizontal mechanical decoupling suspension? 5. Shakers bearing 6a. Snap ring on the test fixture? 6b. Test fixture next snap ring? 7 The bottom adapter block? 8. vibration table adapter adjustment device 9a. horizontal decoupling means? 9b vertical direction decoupling means? 10. horizontal vibration table? 11. vibration table adapter transverse position adjustment means adjusting hole ? 12. vibration table adapter longitudinal position adjustment means adjusting hole? 13. connecting device? 14 left and right circular ring? 15. hanging? 16. vertical shaking table
Embodiment
To combine accompanying drawing that specific embodiment of the present invention is elaborated below.In the following description, nonrestrictive purpose has been set forth detail from explaining, to help to understand all sidedly the present invention.Yet, it will be apparent to those skilled in the art that also and can in having broken away from other embodiment of these details, put into practice the present invention.
Need to prove at this,, only show in the accompanying drawings and closely-related device structure of scheme according to the present invention and/or treatment step, and omitted other details little with relation of the present invention for fear of having blured the present invention because of unnecessary details.
With reference to the accompanying drawings embodiments of the invention are described.
As depicted in figs. 1 and 2, the present invention includes by test specimen 1, shaking table 2, can two-way loading test fixture 3, mechanically decoupled device, shaking table bearing 5.Four shaking tables, two directions associating vibrating device allows to use simultaneously 2, four shaking tables of four shaking tables to be divided into two groups of front and back, and every group comprises two shaking tables, the vibrational excitation of horizontal direction and vertical direction is provided respectively.Shaking table 2 can adopt the electromagnetic vibration generator system of general commercial.The effect of vibration test fixture is to being retrained by test specimen and fix, and the excitation of shaking table is passed to by test specimen.
Vibration test mechanically decoupled is the connecting link between shaking table and the anchor clamps, guarantees on the transfer of vibration direction, to have enough rigidity, can on the non-vibration direction of transfer, not produce constraint to freedom of motion again.Said mechanically decoupled device comprises each two of the mechanically decoupled device 9b of mechanically decoupled device 9a and the vertical direction of horizontal direction, and the one of which end is connected with two vertical direction shaking table 16 1 ends with said two horizontal direction shaking tables 10 respectively.Mechanically decoupled device adopts the double-strand chain static pressure bulb formula decoupling zero device of general commercial.The said mechanically decoupled device device other end is connected with test fixture 3.
In order to realize four shaking tables, two directions associating vibration test; The present invention designed can two-way loading test fixture 3; The inside surface that has on the one hand and fitted by the test specimen outer wall; Realization is to by test specimen constraint and fixing, and realization simultaneously and level link to each other with mechanically decoupled device on the vertical direction on the other hand, and then realization is to the transmission of vibrational excitation on the both direction.Said test fixture 3 can two-wayly load; Comprise like Fig. 3 and last snap ring 6a and a following snap ring 6b and a coupling arrangement 13 shown in Figure 4; The said snap ring 6a that goes up is with following snap ring 6b inside surface and fitted by test specimen 1 outer wall; Will be fixing by test specimen 1 chucking; Switching piece 7 in one bottom is arranged at said snap ring 6b down as shown in Figure 4 bottom, with securing member its other end with the mechanically decoupled device 9b of said vertical direction is connected, and the said snap ring 6a that goes up is connected through the end of a joint face device 13 with the mechanically decoupled device 9a of said horizontal direction respectively with following snap ring 6b same side.
Optional; As shown in Figure 6; Said coupling arrangement 13 comprises a pair of upper and lower semicircle switching piece, and said upper and lower semicircle switching piece one end is that cambered surface is fitted with said upper and lower snap ring respectively; Lower half circle is combined into circular joint face on the other end, is connected through the end of securing member with the mechanically decoupled device of said horizontal direction.The upper and lower switching piece other end of said coupling arrangement 13 can be that arbitrary shape dress is combined into joint face and is connected with an end of the mechanically decoupled device of said horizontal direction.
Optional, the adapter surface of bottom switching piece 7 can be circle, is fixed on the said snap ring 6b down, also can connect through securing member.
Optional, the adapter surface of bottom switching piece 7 can have any shape, as square.
Optional; Owing to will carry out level to exciting; The mechanically decoupled horizontal positioned of wanting of horizontal direction, its deadweight can make level produce eccentric moment to the moving-coil of shaking table, influence the exciting of shaking table; So the present invention has designed the mechanically decoupled suspender of horizontal direction as shown in Figure 54, in order to offset mechanically decoupled deadweight.Said suspender 4 comprise hang 15 with left and right semicircle snap ring 14; The center of gravity place of the mechanically decoupled device 9a of the said horizontal direction of said left and right semicircle snap ring 14 chuckings; Its upper and lower side is fastening with it with securing member respectively; Its upper end also has a through hole to hang 15 and be connected through securing member with said, makes saidly to hang 15 said left and right semicircle snap ring 14 sling.Saidly hang 15 and can be elastic rope or spring.
Optional, the shaking table 10 of horizontal direction must be installed on the shaking table bearing 5, when fixing and position adjustment, all needs switching device.The present invention has designed shaking table switching adjusting gear 8 as shown in Figure 7, and this device can be realized being fixed on shaking table on the support, can realize locational adjustment in the certain limit again.Said shaking table switching adjusting gear 8 is a convex; Its both sides respectively have a lengthwise position adjustment hole 12 to be connected with said shaking table bearing 5; In order to regulate relative position between said shaking table switching adjusting gear 8 and the said shaking table bearing 5; In the middle of the said shaking table switching adjusting gear 8 is several lateral attitude adjustment holes 11, and it is connected with said horizontal direction shaking table 10 bottoms, in order to regulate relative position between said horizontal direction shaking table 10 and the said shaking table switching adjusting gear 8.
The part that the above-mentioned securing member of mentioning can play the role of fastening arbitrarily for bolt etc.
Principle of work of the present invention: adopt feed water the simultaneously shaking table of gentle vertical direction of multiple-input and multiple-output vibration controller to send pumping signal; Shaking table produce corresponding horizontal and vertical axes to vibration; Vibration at first is delivered to mechanically decoupled device; The motion elimination that mechanically decoupled device is axial with non-appointment passes motion to testpieces through switching device and anchor clamps again.
Adopt foregoing invention; Can realize applied the vibrational excitation of two directions simultaneously by test specimen; And the motion of two directions can realize decoupling zero preferably and can not produce eccentric moment to shaking table; Also solve the problem that shaking table two direction positions are freely adjusted simultaneously, realized carrying out the purpose of four shaking tables, two directions associating vibration test.
Many feature and advantage of these embodiment that describe among the present invention are clearly according to this detailed description, so accompanying claims is intended to cover all these feature and advantage in its true spirit and the scope that fall into of these embodiment.In addition, owing to those skilled in the art will find apparent that a lot of modifications and change, not will embodiments of the invention be limited to the precision architecture and the operation of institute's illustration and description therefore, but can contain all suitable modifications and the equivalent that falls in its scope.
Claims (9)
1. shaking table two directions associating vibrating device, it is characterized in that comprising by test specimen (1), shaking table (2), can two-way loading test fixture (3), mechanically decoupled device and suspender thereof and shaking table bearing (5):
Said shaking table (2) comprises each two of horizontal direction shaking table (10) and vertical direction shaking tables (16);
Said mechanically decoupled device comprises each two in the mechanically decoupled device (9b) of mechanically decoupled device (9a) and the vertical direction of horizontal direction; It is connected with the end of said two horizontal direction shaking tables (10) with two vertical direction shaking tables (16) respectively, and mechanically decoupled device (9a) the center of gravity place card of said horizontal direction has a mechanically decoupled suspender (4);
Said test fixture (3) can two-wayly load; Comprise snap ring (6a) and following snap ring (6b); Said upward snap ring (6a) and following snap ring (6b) are with said fixing by test specimen (1) chucking; Switching piece (7) in one bottom is arranged at said snap ring (6b) down bottom, with securing member its other end with the mechanically decoupled device (9b) of said vertical direction is connected, and the said snap ring (6a) of going up is connected through the end of a coupling arrangement (13) with the mechanically decoupled device (9a) of said horizontal direction respectively with following snap ring (6b) side; Mechanically decoupled device (9a) other end of said horizontal direction is connected with said horizontal direction shaking table (10) table top; Said horizontal direction shaking table (10) is positioned on the said shaking table bearing (5).
2. four shaking tables, two directions associating vibrating device according to claim 1; It is characterized in that also comprising several shaking table switching adjusting gears (8); Said shaking table switching adjusting gear (8) is a convex; Its both sides respectively have a lengthwise position adjustment hole (12) to be connected with said shaking table bearing (5); In order to regulate relative position between said shaking table switching adjusting gear (8) and the said shaking table bearing (5); In the middle of the said shaking table switching adjusting gear (8) is several lateral attitude adjustment holes (11), and it is connected with said horizontal direction shaking table (10) bottom, in order to regulate relative position between said horizontal direction shaking table (10) and the said shaking table switching adjusting gear (8).
3. four shaking tables, two directions associating vibrating device according to claim 1; It is characterized in that said mechanically decoupled suspender (4) comprises hangs (15) and left and right semicircle snap ring (14); The center of gravity place of the mechanically decoupled device (9a) of the said horizontal direction of said left and right semicircle snap ring (14) chucking; Its upper and lower side is fastening with it with securing member respectively; Its upper end also has a through hole to be connected through securing member with said hanging (15), and said hanging (15) sling said left and right semicircle snap ring (14).
4. four shaking tables, two directions associating vibrating device according to claim 3 is characterized in that said hanging (15) can be elastic rope or spring.
5. four shaking tables, two directions associating vibrating device according to claim 1; It is characterized in that said coupling arrangement (13) comprises a pair of upper and lower switching piece; Said upper and lower switching piece one end is that cambered surface is fitted with said upward snap ring (6a) and following snap ring (6b) respectively; The other end is connected through the end of securing member with the mechanically decoupled device (9a) of said horizontal direction for the semicircle joint face that is combined into circle.
6. four shaking tables, two directions according to claim 5 associating vibrating device, the upper and lower switching piece other end that it is characterized in that said coupling arrangement (13) can arbitrary shape be combined into joint face and be connected with an end of the mechanically decoupled device (9a) of said horizontal direction.
7. four shaking tables, two directions according to claim 1 associating vibrating device is characterized in that said bottom switching piece (18) is on circle can be directly fixed on said time snap ring (6b).
8. four shaking tables, two directions associating vibrating device according to claim 7 is characterized in that said bottom switching piece (18) can have any shape.
9. four shaking tables, two directions associating vibrating device according to claim 1 is characterized in that said mechanically decoupled device is a double-strand chain static pressure bulb formula.
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| CN201210197175.7A CN102735413B (en) | 2012-06-15 | 2012-06-15 | Four-vibration table two-direction joint vibration device |
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| CN201210197175.7A CN102735413B (en) | 2012-06-15 | 2012-06-15 | Four-vibration table two-direction joint vibration device |
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| CN103487225A (en) * | 2013-09-23 | 2014-01-01 | 铜陵市长江彩色印刷有限责任公司 | Device for detecting anti-vibration performance of video recording equipment and working method thereof |
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| CN108827576A (en) * | 2018-09-12 | 2018-11-16 | 唐山冀东装备工程股份有限公司 | Low frequency horizontal vibration experimental rig by a narrow margin |
| CN108827576B (en) * | 2018-09-12 | 2023-12-19 | 唐山冀东装备工程股份有限公司 | Low-amplitude low-frequency horizontal vibration test device |
| CN110895186A (en) * | 2019-11-28 | 2020-03-20 | 北京机电工程研究所 | Vibration system comprising a plurality of vibration tables and vibration test method |
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| CN114878124A (en) * | 2022-07-08 | 2022-08-09 | 西南交通大学 | Vibration test system |
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