CN102478449A - Triaxial mechanical decoupling device and vibration testing system - Google Patents
Triaxial mechanical decoupling device and vibration testing system Download PDFInfo
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- CN102478449A CN102478449A CN2010105597966A CN201010559796A CN102478449A CN 102478449 A CN102478449 A CN 102478449A CN 2010105597966 A CN2010105597966 A CN 2010105597966A CN 201010559796 A CN201010559796 A CN 201010559796A CN 102478449 A CN102478449 A CN 102478449A
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Abstract
The invention belongs to the technical field of mechanical environmental test, particularly relates to a triaxial mechanical decoupling device and a vibration testing system, and provides a device for connecting a triaxial simultaneous excitation work bench and a testing system. The triaxial mechanical decoupling device is characterized by comprising a work bench (1) and spherical hydrostatic bearings (4), the work bench (1) is in the shape of a metal plate, two mutually perpendicular mounting faces which are perpendicular to the upper end face and the lower end face of the work bench are arranged on the lateral side of the work bench (1), the spherical hydrostatic bearings (4) are respectively mounted on the lower end face (3) of the work bench, an X-directional side (7) of the work bench and a Y-directional side (2) of the work bench, and the other side of each spherical hydrostatic bearing (4) is connected with a vibration generator. Triaxial composite vibration testing of a workpiece can be achieved by using the corresponding triaxial work bench and the spherical hydrostatic bearings. By means of the triaxial mechanical decoupling device, the workbench can move only in the Z-direction, the X-direction or the Y-direction, so that triaxial translation of the work bench is realized.
Description
Technical field
The invention belongs to the dynamic environmental test technical field, be specifically related to a kind of three axial mechanically decoupled device and vibration experiments.
Background technology
The natural vibration environment of most of products all is multi-direction, multivariant compound vibration environment in the actual environment, existing single shaft to vibrator can't realize three axial vibration simulations simultaneously.Three vibrations axial the time need be provided with the single-degree-of-freedom vibrator respectively on axially at three; And the mechanically decoupled device of existing connection workbench and single-degree-of-freedom vibrator is prone to cause existing between three single-degree-of-freedom vibrators stronger motor decussation coupling, makes the freedom of motion of shaking table itself and non-power transmission direction produce the spacing constraint of side direction.
Present existing vibration test is carried out three when axially vibrating simultaneously at needs, and general the employing carried out the axial vibration test of test specimen three successively respectively.Adopt single shaft must increase time of test to vibration rig and test method, simultaneously this single shaft to the vibration test mode can be relatively poor to the reductibility of actual vibration environment, can't reproduce real vibration environment truly.Along with improving constantly of product precision, reliability requirement and test efficiency, the single vibration test can not have been satisfied the testing requirements of vibration environment.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can realize that three axially are excited at the same time mechanism's three axial mechanically decoupled device and vibration experiments that workbench connects.
The present invention is achieved in that
A kind of three axial mechanically decoupled devices comprise workbench and spherical hydrostatic bearing; Said workbench is that metallic is tabular; On its side, be provided with two vertical each other and installed surfaces vertical with the workbench upper and lower end face; Spherical hydrostatic bearing be installed in respectively workbench lower surface, workbench X to side and workbench Y on the side, the opposite side of spherical hydrostatic bearing is connected with vibration machine.
One side of three spherical hydrostatic bearings is fixedly mounted on the workbench lower surface, and the opposite side of three spherical hydrostatic bearings is fixedly connected to vibration machine with Z; One side of a spherical hydrostatic bearing is fixedly mounted on workbench X on the side, and the opposite side of an above-mentioned spherical hydrostatic bearing is fixedly connected to vibration machine with X; One side of two spherical hydrostatic bearings is fixedly mounted on workbench Y on the side, and the opposite side of above-mentioned two spherical hydrostatic bearings is fixedly connected to vibration machine with Y.
One side of two spherical hydrostatic bearings is fixedly mounted on the workbench lower surface, and the opposite side of two spherical hydrostatic bearings is fixedly connected to vibration machine with Z; One side of two shape hydrostatic bearings is fixedly mounted on workbench X on the side, and the opposite side of above-mentioned two spherical hydrostatic bearings is fixedly connected to vibration machine with X; One side of two spherical hydrostatic bearings is fixedly mounted on workbench Y on the side, and the opposite side of above-mentioned two spherical hydrostatic bearings is fixedly connected to vibration machine with Y.
Aforesaid spherical hydrostatic bearing is mechanical type spherical bearing, fluid pressure type spherical bearing, air-flotation type spherical bearing and magnetic-type spherical bearing.
A kind of three-axial vibration pilot system of using aforesaid mechanically decoupled device, it also comprises the vibration machine and the mounting base thereof of three directions of corresponding rectangular coordinate system; The spherical hydrostatic bearing of said mechanically decoupled device connects with corresponding vibration machine.
Aforesaid vibration machine is electrodynamic type vibrator, fluid pressure type vibrator or mechanical type vibrator.
The invention has the beneficial effects as follows:
1. the present invention adopts and has corresponding three axial workbenches and spherical hydrostatic bearing; Through spherical hydrostatic bearing workbench is connected with three axial vibration machines; Through controlling the vibrational waveform of each vibration machine, can realize three axial compound vibration tests of test specimen, reappear the natural vibration waveform under the real working condition; Make it to reach near the natural reality vibrating effect, vibration test result's accuracy is significantly improved.
2. the present invention adopts spherical hydrostatic bearing; Transmit the exciting force of each axial vibration generator to workbench 1 through six spherical hydrostatic bearings 4; And constraint workbench 1 produce around Z to, X to and Y to the rotational motion amount; Realize simultaneously workbench only produce along Z to, X to and Y to moving, realized three axial translations of workbench.
3. the response time of the present invention is fast, reliable, and processing cost is lower, and anti-environmental disturbances ability is strong, can also carry out manual adjustment easily, and is easy to operate, is easy to safeguard.
Description of drawings
Fig. 1 is the stereographic map of a kind of three axial mechanically decoupled devices of the present invention;
Fig. 2 is the vertical view of a kind of three axial mechanically decoupled devices of the present invention;
Fig. 3 is the stereographic map of a kind of three-axial vibration pilot system of the present invention;
Fig. 4 is the front elevation of a kind of three-axial vibration pilot system of the present invention;
Among the figure: 1. workbench, 2. workbench Y is to the side, 3. workbench lower surface, 4. spherical hydrostatic bearing; 5.Z to vibration machine; 6.Y to vibration machine; 7. workbench X is to the side; 8..X to vibration machine.
Embodiment
Below in conjunction with accompanying drawing and embodiment of the present invention a kind of three axial mechanically decoupled devices and vibration experiment are introduced:
Like Fig. 1, shown in 2, a kind of three axial mechanically decoupled devices comprise workbench 1 and spherical hydrostatic bearing 4.Workbench 1 is that metallic is tabular; On its side, be provided with two vertical each other and installed surfaces vertical with the workbench upper and lower end face; Make the normal of said two installed surfaces and the normal form right angle coordinate system of workbench upper and lower end face; With the normal of workbench upper and lower end face upwards a side be Z to, be the X axle with a side of an installed surface normal, make that above-mentioned installed surface is that workbench X is to side 7; A side that satisfies the right-hand rule with a side of an installed surface normal, with X, Z is the Y axle, and makes that above-mentioned installed surface is that workbench Y is to side 2.Being installed in respectively on workbench lower surface 3 and two installed surfaces of spherical hydrostatic bearing 4, the opposite side of spherical hydrostatic bearing 4 is connected with vibration machine.
In the present embodiment, a side of three spherical hydrostatic bearings 4 is fixedly mounted on the workbench lower surface 3 through ring flange, and the opposite side of three spherical hydrostatic bearings 4 and Z are fixedly connected through mounting flange to vibration machine 5.One side of a spherical hydrostatic bearing 4 is fixedly mounted on workbench X on side 7 through ring flange, and the opposite side of an above-mentioned spherical hydrostatic bearing 4 and X are fixedly connected through mounting flange to vibration machine 8.One side of two spherical hydrostatic bearings 4 is fixedly mounted on workbench Y on side 2 through ring flange, and the opposite side of above-mentioned two spherical hydrostatic bearings 4 and Y are fixedly connected through mounting flange to vibration machine 6.
Because the both ends of the surface up and down of spherical hydrostatic bearing 4 can realize five degree of freedom (Three Degree Of Freedom rotates and the two-freedom translation) motion; So axial arranged three the spherical hydrostatic bearings 4 of vertical Z except that the exciting force of direction of transfer vibration machine 5 drives workbench 1 along the Z direction is moved, retrain simultaneously workbench 1 around X to Y to rotation.Axial arranged two the spherical hydrostatic bearings 4 of horizontal Y are except that the exciting force that transmits Y direction vibration machine 6 drives workbench 1 along the Y direction is moved, retrain simultaneously workbench 1 around Z to rotation.The exciting force that 4 of the axial arranged spherical hydrostatic bearings of horizontal X transmit directions X vibration machine 8 drives workbench 1 and moves along directions X.So the effect of six spherical hydrostatic bearings 4 that use in the device is the exciting forces that transmit each axial vibration generator to workbench 1; Constraint workbench 1 produce around Z to, X to and Y to the rotational motion amount; Realize simultaneously workbench only produce along Z to, X to and Y to moving, thereby realize three axial translations of workbench.
During work; Start the vibration machine of three directions; Through artificial design and coordinate the vibrational waveform of each vibration machine, X can horizontal X direction, horizontal Y direction and vertical Z direction on produce vibration to vibration machine 6, Z to vibration machine 5 to vibration machine 8, Y, and the vibration that three vibration machines produce acts on workbench and the test specimen through spherical hydrostatic bearing transmission while superposition that should be axial; Realize three axial compound vibration tests of test specimen; Reappear the natural vibration waveform under the real working condition, make it to reach, vibration test result's accuracy is significantly improved near the natural reality vibrating effect.
The arrangement and the number of the spherical hydrostatic bearing 4 that install workbench bottom surface and side are not limited to the number in the foregoing description.The difference of spherical hydrostatic bearing 4 numbers only is three axial translation functions that guarantee workbench and the realization that retrains three axial rotation functions.If need to realize other function, can adjust the arrangement and the number of the spherical hydrostatic bearing of installing in workbench bottom surface and side 4 according to actual needs.In another embodiment, a side of two spherical hydrostatic bearings 4 is fixedly mounted on the workbench lower surface 3 through ring flange, and the opposite side of two spherical hydrostatic bearings 4 and Z are fixedly connected through mounting flange to vibration machine 5.One side of two spherical hydrostatic bearings 4 is fixedly mounted on workbench X on side 7 through ring flange, and the opposite side of above-mentioned two spherical hydrostatic bearings 4 and X are fixedly connected through mounting flange to vibration machine 8.One side of two spherical hydrostatic bearings 4 is fixedly mounted on workbench Y on side 2 through ring flange, and the opposite side of above-mentioned two spherical hydrostatic bearings 4 and Y are fixedly connected through mounting flange to vibration machine 6.
Spherical hydrostatic bearing 4 is mechanical type spherical bearing, fluid pressure type spherical bearing, air-flotation type spherical bearing or magnetic-type spherical bearing.
Like Fig. 3, shown in 4, a kind of three-axial vibration pilot system of using above-mentioned mechanically decoupled device comprises of the present invention three axial mechanically decoupled devices, also comprises the vibration machine and the mounting base thereof of three directions of corresponding rectangular coordinate system.The spherical hydrostatic bearing 4 of said three axial mechanically decoupled devices connects with corresponding vibration machine.Mounting base supports vibration machine, and it adopts existing techniques in realizing.
Above-mentioned vibration machine is electrodynamic type vibrator, fluid pressure type vibrator or mechanical type vibrator.
When test specimen carries out three-axis vibration test; Test specimen to be measured is fixedly mounted on the table top of workbench 1; Six spherical hydrostatic bearings 4 in the mechanically decoupled device are to be used for transmitting to workbench the exciting force of each axial vibration generator; The constraint workbench produce around Z axially, X axis and the axial rotation of Y, guarantee simultaneously workbench only produce along Z to, X to and Y to moving, thereby realize three axial translations of workbench.
Three axial mechanically decoupled equipment mechanisms are reasonable in design, easy for installation and maintenance cost is low; Can satisfy and utilize existing single shaft to realize the three axial experiment needs of vibration simultaneously to vibration machine; And can realize the reduction of actual vibration environment to greatest extent; The equipment of whole three-axial vibration test unit is simplified, and realizes the modularization installation and maintenance.Can make the geometrical axis of workbench and the relative angle of direction of vibration change significantly reduction, keep effective displacement of system simultaneously, improve the vibrational waveform degree of distortion, improve vibration test result's accuracy.Characteristics such as it is fast that this device has the response time, reliable, and processing cost is lower, and anti-environmental disturbances ability is strong can also be carried out manual adjustment easily, and are easy to operate, are easy to safeguard.
The foregoing description is merely explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not be as restriction protection scope of the present invention.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (6)
1. axial mechanically decoupled device, it is characterized in that: it comprises workbench (1) and spherical hydrostatic bearing (4); Said workbench (1) is that metallic is tabular; On its side, be provided with two vertical each other and installed surfaces vertical with the workbench upper and lower end face; Spherical hydrostatic bearing (4) be installed in respectively workbench lower surface (3), workbench X to side (7) and workbench Y on side (2), the opposite side of spherical hydrostatic bearing (4) is connected with vibration machine.
2. according to claim 1 a kind of three axial mechanically decoupled devices; It is characterized in that: a side of three spherical hydrostatic bearings (4) is fixedly mounted on the workbench lower surface (3), and the opposite side of three spherical hydrostatic bearings (4) is fixedly connected to vibration machine (5) with Z; One side of a spherical hydrostatic bearing (4) is fixedly mounted on workbench X on side (7), and the opposite side of an above-mentioned spherical hydrostatic bearing (4) is fixedly connected to vibration machine (8) with X; One side of two spherical hydrostatic bearings (4) is fixedly mounted on workbench Y on side (2), and the opposite side of above-mentioned two spherical hydrostatic bearings (4) is fixedly connected to vibration machine (6) with Y.
3. according to claim 1 a kind of three axial mechanically decoupled devices; It is characterized in that: a side of two spherical hydrostatic bearings (4) is fixedly mounted on the workbench lower surface (3), and the opposite side of two spherical hydrostatic bearings (4) is fixedly connected to vibration machine (5) with Z; One side of two spherical hydrostatic bearings (4) is fixedly mounted on workbench X on side (7), and the opposite side of above-mentioned two spherical hydrostatic bearings (4) is fixedly connected to vibration machine (8) with X; One side of two spherical hydrostatic bearings (4) is fixedly mounted on workbench Y on side (2), and the opposite side of above-mentioned two spherical hydrostatic bearings (4) is fixedly connected to vibration machine (6) with Y.
4. according to any one described a kind of three axial mechanically decoupled device of claim 1-3, it is characterized in that: described spherical hydrostatic bearing (4) is mechanical type spherical bearing, fluid pressure type spherical bearing, air-flotation type spherical bearing and magnetic-type spherical bearing.
5. an application is according to the three-axial vibration pilot system of each described three axial mechanically decoupled devices of claim 1-3, and it is characterized in that: it also comprises the vibration machine and the mounting base thereof of three directions of corresponding rectangular coordinate system; The spherical hydrostatic bearing (4) of said three axial mechanically decoupled devices connects with corresponding vibration machine.
6. three-axial vibration pilot system according to claim 5, it is characterized in that: described vibration machine is electrodynamic type vibrator, fluid pressure type vibrator or mechanical type vibrator.
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| CN2010105597966A CN102478449A (en) | 2010-11-25 | 2010-11-25 | Triaxial mechanical decoupling device and vibration testing system |
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| CN2010105597966A CN102478449A (en) | 2010-11-25 | 2010-11-25 | Triaxial mechanical decoupling device and vibration testing system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735413A (en) * | 2012-06-15 | 2012-10-17 | 北京机电工程研究所 | Four-vibration table two-direction joint vibration device |
| CN103776608A (en) * | 2014-01-10 | 2014-05-07 | 北京机电工程研究所 | Synchronous in-phase shunt-excitation vibration device |
| CN104596720A (en) * | 2015-01-15 | 2015-05-06 | 浙江大学 | Three-component standard vibrating table based on reed type decoupling devices |
| CN104614138A (en) * | 2015-01-15 | 2015-05-13 | 浙江大学 | Three-component standard vibrating table based on push-pull type air floating decoupling device |
| CN106546401A (en) * | 2016-11-24 | 2017-03-29 | 苏州东菱振动试验仪器有限公司 | With pre-pressing structure three axial decoupling devices and vibration table |
| CN106556502A (en) * | 2016-11-24 | 2017-04-05 | 苏州东菱振动试验仪器有限公司 | Three axial decoupling device of integral type with static pressure guide function and vibration table |
| CN106568567A (en) * | 2016-11-11 | 2017-04-19 | 中国工程物理研究院总体工程研究所 | Non-contact three-axial vibration test device and test method thereof |
| CN108254149A (en) * | 2018-01-22 | 2018-07-06 | 航天科工防御技术研究试验中心 | A kind of multi and impact combined environment testing system |
| CN112504538A (en) * | 2020-11-24 | 2021-03-16 | 四川省机械技术服务中心 | Mechanical decoupling force cell |
| CN114414186A (en) * | 2021-12-10 | 2022-04-29 | 北京航天希尔测试技术有限公司 | Three-degree-of-freedom electric vibration test system with isotropic layout |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735413B (en) * | 2012-06-15 | 2015-07-01 | 北京机电工程研究所 | Four-vibration table two-direction joint vibration device |
| CN102735413A (en) * | 2012-06-15 | 2012-10-17 | 北京机电工程研究所 | Four-vibration table two-direction joint vibration device |
| CN103776608A (en) * | 2014-01-10 | 2014-05-07 | 北京机电工程研究所 | Synchronous in-phase shunt-excitation vibration device |
| CN104596720A (en) * | 2015-01-15 | 2015-05-06 | 浙江大学 | Three-component standard vibrating table based on reed type decoupling devices |
| CN104614138A (en) * | 2015-01-15 | 2015-05-13 | 浙江大学 | Three-component standard vibrating table based on push-pull type air floating decoupling device |
| CN104596720B (en) * | 2015-01-15 | 2017-08-08 | 浙江大学 | Three-component standard vibration machine based on reed-type decoupling device |
| CN106568567A (en) * | 2016-11-11 | 2017-04-19 | 中国工程物理研究院总体工程研究所 | Non-contact three-axial vibration test device and test method thereof |
| CN106556502A (en) * | 2016-11-24 | 2017-04-05 | 苏州东菱振动试验仪器有限公司 | Three axial decoupling device of integral type with static pressure guide function and vibration table |
| CN106546401A (en) * | 2016-11-24 | 2017-03-29 | 苏州东菱振动试验仪器有限公司 | With pre-pressing structure three axial decoupling devices and vibration table |
| CN106556502B (en) * | 2016-11-24 | 2019-09-20 | 苏州东菱振动试验仪器有限公司 | The axial decoupling device of integral type three and shake table with static pressure guide function |
| CN106546401B (en) * | 2016-11-24 | 2019-09-20 | 苏州东菱振动试验仪器有限公司 | Three axial decoupling devices and shake table with pre-pressing structure |
| CN108254149A (en) * | 2018-01-22 | 2018-07-06 | 航天科工防御技术研究试验中心 | A kind of multi and impact combined environment testing system |
| CN112504538A (en) * | 2020-11-24 | 2021-03-16 | 四川省机械技术服务中心 | Mechanical decoupling force cell |
| CN114414186A (en) * | 2021-12-10 | 2022-04-29 | 北京航天希尔测试技术有限公司 | Three-degree-of-freedom electric vibration test system with isotropic layout |
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Application publication date: 20120530 |