CN201935796U - Triaxial mechanical decoupling device and vibration test system - Google Patents
Triaxial mechanical decoupling device and vibration test system Download PDFInfo
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- CN201935796U CN201935796U CN2010206265357U CN201020626535U CN201935796U CN 201935796 U CN201935796 U CN 201935796U CN 2010206265357 U CN2010206265357 U CN 2010206265357U CN 201020626535 U CN201020626535 U CN 201020626535U CN 201935796 U CN201935796 U CN 201935796U
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Abstract
The utility model belongs to the technical field of mechanical environment tests, particularly relates to a triaxial mechanical decoupling device and a vibration test system, and provides a device which is connected by an operating platform and can realize simultaneous shock excitation in three axial directions as well as a test system. The device is characterized by comprising an operating platform (1) and spherical hydrostatic bearings (4); the operating platform (1) is made of metal and in a plate shape; two mounting surfaces which are mutually perpendicular and perpendicular to upper and lower end surfaces of the operating platform are arranged on side surfaces of the operating platform (1); the spherical hydrostatic bearings (4) are installed on lower end surface of the operating platform (1), an X-direction side surface (3) of the operating platform and a Y-direction side surface (2) of the operating platform respectively; and the other sides of the spherical hydrostatic bearings (4) are connected with a vibration generator. The triaxial mechanical decoupling device adopts the operating platform corresponding to the three axial directions and the spherical hydrostatic bearings, and can realize the triaxial composite vibration test of testing pieces. The triaxial mechanical decoupling device simultaneously realizes that the operating platform only moves in the Z direction, the X direction and the Y direction, and realizes the triaxial translational movement of the operating platform.
Description
Technical field
The utility model belongs to the dynamic environmental test technical field, is 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 axial time vibrations 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 easily causes 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.
The utility model content
The purpose of this utility model provides 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 utility model is achieved in that
A kind of three axial mechanically decoupled devices comprise workbench and spherical hydrostatic bearing; Described workbench is that metallic is tabular, on its side, be provided with two vertical mutually 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 fixedlyed 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 fixedlyed 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 fixedlyed 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 fixedlyed 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 fixedlyed 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 fixedlyed 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 described mechanically decoupled device connects with corresponding vibration machine.
Aforesaid vibration machine is electrodynamic type vibrator, fluid pressure type vibrator or mechanical type vibrator.
The beneficial effects of the utility model are:
1. the utility model adopts and has corresponding three axial workbenches and spherical hydrostatic bearing, by spherical hydrostatic bearing workbench is connected with three axial vibration machines, by 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 utility model adopts spherical hydrostatic bearing, transmit the exciting force of each axial vibration generator to workbench 1 by 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.
The utility model response time fast, reliable, processing cost is lower, anti-environmental interference 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 utility model;
Fig. 2 is the vertical view of a kind of three axial mechanically decoupled devices of the present utility model;
Fig. 3 is the stereographic map of a kind of three-axial vibration pilot system of the present utility model;
Fig. 4 is the front elevation of a kind of three-axial vibration pilot system of the present utility model;
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 drawings and Examples of the present utility model a kind of three axial mechanically decoupled devices and vibration experiment are introduced:
As shown in Figure 1, 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 mutually and installed surfaces vertical with the workbench upper and lower end face, make the normal of described 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, side with an installed surface normal is an X-axis, makes 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 a Y-axis, 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 by ring flange, and the opposite side of three spherical hydrostatic bearings 4 and Z are fixedlyed connected by mounting flange to vibration machine 5.One side of a spherical hydrostatic bearing 4 is fixedly mounted on workbench X on side 7 by ring flange, and the opposite side of an above-mentioned spherical hydrostatic bearing 4 and X are fixedlyed connected by mounting flange to vibration machine 8.One side of two spherical hydrostatic bearings 4 is fixedly mounted on workbench Y on side 2 by ring flange, and the opposite side of above-mentioned two spherical hydrostatic bearings 4 and Y are fixedlyed connected by 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.Horizontal Y-axis to two spherical hydrostatic bearings 4 arranging 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, by artificial design and coordinate the vibrational waveform of each vibration machine, X is to vibration machine 8, Y is to vibration machine 6, Z can be in the horizontal X direction to vibration machine 5, produce vibration on horizontal Y direction and the vertical Z direction, the vibration of three vibration machine generations acts on workbench and the test specimen through this axial spherical hydrostatic bearing transmission while superposition, 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.
The arrangement of the spherical hydrostatic bearing 4 that install workbench bottom surface and side and number 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 by ring flange, and the opposite side of two spherical hydrostatic bearings 4 and Z are fixedlyed connected by mounting flange to vibration machine 5.One side of two spherical hydrostatic bearings 4 is fixedly mounted on workbench X on side 7 by ring flange, and the opposite side of above-mentioned two spherical hydrostatic bearings 4 and X are fixedlyed connected by mounting flange to vibration machine 8.One side of two spherical hydrostatic bearings 4 is fixedly mounted on workbench Y on side 2 by ring flange, and the opposite side of above-mentioned two spherical hydrostatic bearings 4 and Y are fixedlyed connected by 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.
Shown in Fig. 3,4, a kind of three-axial vibration pilot system of using above-mentioned mechanically decoupled device comprises of the present utility model 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 described 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 Y-axis to rotation, 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 experiment needs that axially vibrate 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 interference ability is strong can also be carried out manual adjustment easily, and are easy to operate, are easy to safeguard.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not be as restriction protection domain of the present utility model.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (6)
1. axial mechanically decoupled device, it is characterized in that: it comprises workbench (1) and spherical hydrostatic bearing (4); Described workbench (1) is that metallic is tabular, on its side, be provided with two vertical mutually 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 fixedlyed 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 fixedlyed 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 fixedlyed 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 fixedlyed 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 fixedlyed 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 fixedlyed 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 described 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206265357U CN201935796U (en) | 2010-11-25 | 2010-11-25 | Triaxial mechanical decoupling device and vibration test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206265357U CN201935796U (en) | 2010-11-25 | 2010-11-25 | Triaxial mechanical decoupling device and vibration test system |
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| CN201935796U true CN201935796U (en) | 2011-08-17 |
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| CN2010206265357U Expired - Lifetime CN201935796U (en) | 2010-11-25 | 2010-11-25 | Triaxial mechanical decoupling device and vibration test system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478449A (en) * | 2010-11-25 | 2012-05-30 | 北京航天斯达新技术装备公司 | Triaxial mechanical decoupling device and vibration testing system |
| CN102494860A (en) * | 2011-12-19 | 2012-06-13 | 浙江大学 | Vibration worktable device with adjustable inclined angle |
| 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 |
| CN103364161A (en) * | 2013-07-09 | 2013-10-23 | 南车青岛四方机车车辆股份有限公司 | Test bench of comprehensive performance of air spring |
| CN105137122A (en) * | 2015-09-09 | 2015-12-09 | 太原理工大学 | Triaxial accelerometer calibration platform based on sliding groove and sliding block decoupling devices |
| CN106353058A (en) * | 2016-08-25 | 2017-01-25 | 浙江理工大学 | Wheel vibration test stand for high-speed EMU |
| 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 |
| CN108333037A (en) * | 2017-12-22 | 2018-07-27 | 安徽伟宏钢结构集团股份有限公司 | A kind of actuator attachment device of three-dimensional pseudo-static experimental |
| CN110806298A (en) * | 2019-10-22 | 2020-02-18 | 北京航天希尔测试技术有限公司 | Electrically-excited six-degree-of-freedom vibration test device |
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2010
- 2010-11-25 CN CN2010206265357U patent/CN201935796U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478449A (en) * | 2010-11-25 | 2012-05-30 | 北京航天斯达新技术装备公司 | Triaxial mechanical decoupling device and vibration testing system |
| CN102494860A (en) * | 2011-12-19 | 2012-06-13 | 浙江大学 | Vibration worktable device with adjustable inclined angle |
| 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 |
| 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 |
| CN103364161A (en) * | 2013-07-09 | 2013-10-23 | 南车青岛四方机车车辆股份有限公司 | Test bench of comprehensive performance of air spring |
| CN105137122A (en) * | 2015-09-09 | 2015-12-09 | 太原理工大学 | Triaxial accelerometer calibration platform based on sliding groove and sliding block decoupling devices |
| CN106353058A (en) * | 2016-08-25 | 2017-01-25 | 浙江理工大学 | Wheel vibration test stand for high-speed EMU |
| CN106353058B (en) * | 2016-08-25 | 2019-01-04 | 浙江理工大学 | High-speed EMUs wheel vibration mechine |
| CN108333037A (en) * | 2017-12-22 | 2018-07-27 | 安徽伟宏钢结构集团股份有限公司 | A kind of actuator attachment device of three-dimensional pseudo-static experimental |
| CN108333037B (en) * | 2017-12-22 | 2020-05-15 | 安徽伟宏钢结构集团股份有限公司 | Actuator connecting device for three-dimensional pseudo-static test |
| 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 |
| CN110806298A (en) * | 2019-10-22 | 2020-02-18 | 北京航天希尔测试技术有限公司 | Electrically-excited six-degree-of-freedom vibration test device |
| CN110806298B (en) * | 2019-10-22 | 2021-06-11 | 北京航天希尔测试技术有限公司 | Electrically-excited six-degree-of-freedom vibration test device |
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Granted publication date: 20110817 |
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