CN109341998A - A kind of decoupled components and synchronous vibration experimental rig - Google Patents
A kind of decoupled components and synchronous vibration experimental rig Download PDFInfo
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- CN109341998A CN109341998A CN201811392687.2A CN201811392687A CN109341998A CN 109341998 A CN109341998 A CN 109341998A CN 201811392687 A CN201811392687 A CN 201811392687A CN 109341998 A CN109341998 A CN 109341998A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
The invention discloses a kind of decoupled components and synchronous vibration experimental rig, belong to multi-freedom-degree vibration experimental technique field, solve pin rod in the prior art be also easy to produce fatigue failure, synchronous vibration experimental rig security reliability is poor and technical problem that installation and debugging are complicated.Decoupled components of the invention, including horizontal decoupled components, horizontal decoupled components include cross connecting rod and articulated linkage, and cross connecting rod is hinged with articulated linkage, and articulated linkage can rotate along the vertical direction；In use, the both ends of decoupled components are hinged with horizontal vibration generator and workbench respectively.The present invention can be used for multi-freedom-degree vibration test.
Description
Technical field
The present invention relates to a kind of multi-freedom-degree vibration experimental technique more particularly to a kind of decoupled components and synchronous vibration to test
Device.
Background technique
Synchronous vibration experimental rig is that one kind can carry out the vibration of multiple directions or the mechanical environment of impact test simultaneously
Testing equipment generallys use decoupling device and is coupled in the vibration machine of vertically and horizontally both direction and same workbench 3
Together.
In the prior art, synchronous vibration experimental rig generally includes vertical vibrating generator 1,2 and of horizontal vibration generator
Workbench 3, referring to Fig. 1 to Fig. 2.Vertical vibrating generator 1 is coupled by one group of slide track component with workbench 3, thus compensation water
Square to vibration.Horizontal vibration generator 2 is coupled by one group of link mechanism 4 with workbench 3, specifically, link mechanism 4
Including sequentially connected first sliding block, first connecting rod, pin rod, second connecting rod and the second sliding block, first connecting rod and second connecting rod can
It is rotated around pin rod, in use, the first sliding block is connect with horizontal vibration generator 2, the second sliding block is connect with workbench 3；Work as work
When exciting force of the platform 3 by vertical direction, by the transmitting of power, second connecting rod can drive first connecting rod rotation by pin rod,
And then the sliding of the first sliding block is driven, to compensate the vibration of vertical direction.
But in practical applications, since pin rod repeats the exciting force and link mechanism self gravity by vertical direction
The effect of the shearing force of generation be easy to cause fatigue failure, or even fracture, and the safety for seriously affecting synchronous vibration experimental rig can
By property.
In addition, existing synchronous vibration experimental rig is during the installation process, due to the cumulative errors of measure, process etc.
Influence, often will cause installation dimension and design size have very large deviation, it is complex so as to cause installation and debugging.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of decoupled components and synchronous vibration experimental rig, solve existing
It is poor and installation and debugging are complicated asks to be also easy to produce fatigue failure, the security reliability of synchronous vibration experimental rig for pin rod in technology
Topic.
The purpose of the present invention is mainly achieved through the following technical solutions:
The present invention provides a kind of decoupled components, including horizontal decoupled components, horizontal decoupled components include cross connecting rod and
Articulated linkage, cross connecting rod is hinged with articulated linkage, and articulated linkage can rotate along the vertical direction；In use, the two of decoupled components
It holds hinged with horizontal vibration generator and workbench respectively.
In a kind of possible design, articulated linkage is provided close to horizontal vibration generator side, and cross connecting rod is set to and leans on
Nearly workbench side.
In a kind of possible design, the both ends of decoupled components are equipped with mounting base, decoupled components by the first mounting base with
Workbench is hinged, hinged by the second mounting base and horizontal vibration generator.
In a kind of possible design, between the first mounting base and decoupled components, between cross connecting rod and articulated linkage with
And it is hinged by mutually matched protrusion and groove between decoupled components and the second mounting base.
It is hinged by pin shaft between groove and protrusion in a kind of possible design.
In a kind of possible design, one end of pin shaft is machined with boss, and the other end is threaded, and pin shaft passes through protrusion
It is fastenedly connected with after the through-hole of groove with nut；Alternatively, the both ends of pin shaft are threaded, screw thread is fastenedly connected with nut.
It further include vertical decoupled components in a kind of possible design, vertical decoupled components include sliding rail and and sliding rail
The sliding block being slidably connected, sliding rail are connect with vertical vibrating generator, and sliding block is connect with workbench.
In a kind of possible design, vertical decoupled components further include the shaft being set up on vertical vibrating generator and
For rotating the gag lever post limited to shaft；One end of gag lever post is fixedly connected with shaft, and the other end and vertical vibrating are sent out
Raw device is fixedly connected；Sliding rail is set to the outer peripheral surface of shaft along the axial direction of shaft, and the quantity of sliding rail and sliding block is multiple.
In a kind of possible design, shaft is regular polygon, each side of shaft perpendicular to the section of shaft axis
On be equipped with sliding rail.
The present invention also provides a kind of synchronous vibration experimental rigs, including workbench, horizontal vibration generator, vertical vibrating
Generator and above-mentioned decoupled components.
Compared with prior art, the present invention has the beneficial effect that:
A) decoupled components provided by the invention combine cross connecting rod and articulated linkage, composition link mechanism, and ten
Word connecting rod and articulated linkage can be freely rotated within the scope of certain angle.Pass through articulated linkage and cross connecting rod and decoupling group
Rotation between part and workbench can compensate for the vibration of vertical direction；Simultaneously as decoupled components respectively with workbench and water
Flat vibration machine is rotatablely connected, and the articulated linkage and cross connecting rod in decoupled components are rotatablely connected, therefore, above-mentioned decoupled components
The exciting force and decoupled components self gravity of suffered vertical direction can distribute between decoupled components and workbench, decoupling group
It is existing so as to avoid at three tie points between part and horizontal vibration generator and between articulated linkage and cross connecting rod
There is the problem of pin rod is also easy to produce fatigue failure in technology, improves the security reliability of above-mentioned decoupled components.
B) in large-scale testing equipment installation process, due to the influence of the cumulative errors of measure, process etc., often
Will cause installation dimension and design size has very large deviation, causes trouble to installation and debugging, not only influences progress, can also when serious
It brings serious economic loss, in decoupled components provided by the invention, pacifies when between workbench and horizontal vibration generator
When filling error, installation caused by cumulative errors can be compensated for by the rotation between decoupled components and horizontal vibration generator
The problem of dimensional discrepancy, shortens the time of installation and debugging so that reducing decoupled components the case where rotation card resistance occurs.
Other features and advantages of the present invention will illustrate in the following description, also, partial become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is the main view of existing synchronous vibration experimental rig；
Fig. 2 is the top view of existing synchronous vibration experimental rig；
Fig. 3 is that the connection structure of decoupled components and horizontal vibration generator and workbench that the embodiment of the present invention one provides is shown
It is intended to；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the structural schematic diagram for the decoupled components that the embodiment of the present invention one provides；
The structural schematic diagram of pin rod in the decoupled components that Fig. 6 provides for the embodiment of the present invention one；
Another structural schematic diagram of pin rod in the decoupled components that Fig. 7 provides for the embodiment of the present invention one；
Fig. 8 is Kinematic Decomposition schematic diagram after the decoupled components stress that the embodiment of the present invention one provides；
Fig. 9 is that the decoupled components deviation compensation that the embodiment of the present invention one provides moves schematic diagram；
Figure 10 is the structural schematic diagram of synchronous vibration experimental rig provided by Embodiment 2 of the present invention；
Figure 11 is the top view of Figure 10.
Appended drawing reference:
1- vertical vibrating generator；2- horizontal vibration generator；3- workbench；4- link mechanism；5- cross connecting rod；6- hinge
Connective pole；7- cross connecting rod attachment base；8- articulated linkage attachment base；9- pin shaft；10- sliding rail；11- sliding block；12- base；S1- is perpendicular
Straight moving displacement component；S2- horizontal movement displacement component；L- dimensional discrepancy；α, β-corner；M- slippage.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention.
Embodiment one
A kind of decoupled components are present embodiments provided, referring to Fig. 3 to Fig. 9, including horizontal decoupled components, above-mentioned horizontal decoupling
Component includes cross connecting rod 5 and articulated linkage 6, and cross connecting rod 5 and articulated linkage 6 are hinged, and articulated linkage 6 can turn along the vertical direction
It is dynamic；In use, the both ends of decoupled components are hinged with horizontal vibration generator 2 and workbench 3 respectively.
In practical application, when under the action of vertical vibrating generator 1 vertical vibrating occurs for workbench 3, pass through power
Transmitting, articulated linkage 6 rotate relative to workbench 3, and cross connecting rod 5 rotates relative to articulated linkage 6, to compensate
The vibration of vertical direction.
Compared with prior art, decoupled components provided in this embodiment are by cross connecting rod 5 and the combination of articulated linkage 6 one
It rises, constitutes link mechanism, cross connecting rod 5 and articulated linkage 6 can be freely rotated within the scope of certain angle.Pass through articulated linkage
Rotation between 6 and cross connecting rod 5 and decoupled components and workbench 3 can compensate for the vibration of vertical direction；Simultaneously as solution
Coupling component is rotatablely connected with workbench 3 and horizontal vibration generator 2 respectively, articulated linkage 6 and cross connecting rod 5 in decoupled components
Rotation connection, therefore, the exciting force and decoupled components self gravity of vertical direction suffered by above-mentioned decoupled components can distribute
Between decoupled components and workbench 3, between decoupled components and horizontal vibration generator 2 and articulated linkage 6 and cross connecting rod 5 it
Between three tie points at, so as to avoid the problem that pin rod is also easy to produce fatigue failure in the prior art, improve above-mentioned decoupling
The security reliability of component.
In addition, in large-scale testing equipment installation process, due to the influence of the cumulative errors of measure, process etc.,
Often will cause installation dimension and design size has very large deviation, causes trouble to installation and debugging, progress is not only influenced, when serious
Serious economic loss can also be brought.When occurring the installation error of vertical direction between workbench 3 and horizontal vibration generator 2
When, it is inclined can be compensated for by the rotation between decoupled components and horizontal vibration generator 2 for installation dimension caused by cumulative errors
The problem of difference shortens the time of installation and debugging so that reducing decoupled components the case where rotation card resistance occurs.
For the positional relationship of cross connecting rod 5 and articulated linkage 6, illustratively, cross connecting rod 5 can be provided close to water
Flat 2 side of vibration machine, articulated linkage 6 are provided close to 3 side of workbench, and cross connecting rod 5 is far from 6 one end of articulated linkage and water
Flat vibration machine 2 is hinged, and articulated linkage 6 is hinged far from 5 one end of cross connecting rod and workbench 3；Alternatively, will can also hingedly connect
Bar 6 is provided close to 2 side of horizontal vibration generator, and cross connecting rod 5 is provided close to 3 side of workbench, and articulated linkage 6 is far from cross
5 one end of connecting rod and horizontal vibration generator 2 are hinged, and cross connecting rod 5 is hinged far from 6 one end of articulated linkage and workbench 3.
Consider from the transmitting angle of power, the positional relationship of cross connecting rod 5 and articulated linkage 6 can choose the first.This is
Because coupling assembly is mainly acted on by the vertical exciting force of workbench 3 close to 3 one end of workbench, articulated linkage 6 is set to and is leaned on
Nearly 3 one end of workbench, can directly compensate vertical exciting force, so that vertical exciting force will not substantially act on cross
On connecting rod 5；Similarly, coupling assembly is mainly swashed by the level of horizontal vibration generator 2 close to 2 one end of horizontal vibration generator
Power of shaking effect, since the rotation direction at 5 both ends of cross connecting rod is mutually perpendicular to, will not twist, by cross in the horizontal direction
Connecting rod 5 is provided close to 2 one end of horizontal vibration generator, and horizontal exciting force is enabled to be transferred directly to cut with scissors by cross connecting rod 5
Connective pole 6, to improve the accuracy of power transmitting.
Consider from the distribution angle of power, the positional relationship of cross connecting rod 5 and articulated linkage 6 can choose second.Due to
Decoupled components are primarily subjected to vertical vibrating close to 7 one end of workbench, it is generally the case that the weight of cross connecting rod 5 is less than and hingedly connects
Cross connecting rod 5 is provided close to workbench side by bar 6, opposite can be reduced and be acted on cross connecting rod 5 and the connection of articulated linkage 6
The shearing force that place is subject to, to further increase the security reliability of above-mentioned decoupled components.
It is understood that in order to facilitate the installation of, mounting base can be set in the both ends of decoupled components, decoupled components pass through peace
It is hinged with workbench 3 and horizontal vibration generator 2 respectively to fill seat.
Specifically, it between one of mounting base and cross connecting rod 5, between cross connecting rod 5 and articulated linkage 6 and cuts with scissors
It can be connected by the protrusion and groove for cooperating hinged between connective pole 6 and another mounting base.Illustratively, hingedly
Articulated linkage protrusion can be set in the both ends of connecting rod 6, and cross connecting rod groove, above-mentioned installation can be set in the both ends of cross connecting rod 5
Seat can be divided into cross connecting rod attachment base 7 and articulated linkage attachment base 8.Wherein, cross connecting rod attachment base 7 is pacified including cross connecting rod
It fills matrix and the cross connecting rod in installation base body installs protrusion, the cross of cross connecting rod installation protrusion insertion cross connecting rod
In link groove；Articulated linkage mounting base includes articulated linkage installation base body and hinged in articulated linkage installation base body
Connecting rod installation groove, articulated linkage protrusion are inserted into articulated linkage installation groove.It should be noted that above-mentioned about protrusion and groove
Description be only one of specific embodiment, in practical application, the set-up mode of the two can there are many, can be according to specific
Situation is selected, and is not limited one by one herein.
It is understood that in order to make to form stable articulated structure between groove and protrusion, it can between groove and protrusion
With hinged by pin shaft 9.Correspondingly, needing to open up corresponding through-hole in groove and protrusion, pin shaft 9 passes through corresponding through-hole, from
And realize that the stabilization between groove and protrusion is hinged.Wherein, the through-hole at 5 both ends of cross connecting rod does not communicate with each other, and both ends through-hole
It is located in two planes that quadrature is presented in the projection of three-dimensional space；The through-hole at 6 both ends of articulated linkage is in three-dimensional space
Between projection it is in the same plane；Crowning or groove surface in two mounting bases are located in the projection of three-dimensional space is in
In two planes of existing quadrature.
It should be noted that can smoothly be rotated to guarantee above-mentioned decoupled components in use, and structure phase
It is small―gap suture cooperation between protrusion and groove, between pin shaft 9 and through-hole to stabilization.
In order to facilitate the installation of, pin shaft 9 can use following two structure.One end of one of structure, pin rod can add
Work has boss, and the other end is threaded.Pin shaft 9 is fastenedly connected after passing through the through-hole on protrusion and groove with nut.It is another
Structure, the both ends of pin shaft 9 can be threaded, and screw thread is fastenedly connected with nut.
In view of above-mentioned decoupled components do not need only compensate for the vibration of vertical direction, it is also necessary to compensation level vibration machine
2 horizontal vibrations generated, therefore, above-mentioned decoupled components further include the vertical decoupled components of multiple groups, and vertical decoupled components include sliding rail
10 and the sliding block 11 that is slidably connected with sliding rail 10, sliding rail 10 connect with vertical vibrating generator 1, sliding block 11 and workbench 3 connect
It connects, the glide direction of sliding block 11 is parallel with the direction of vibration of horizontal vibration generator 2.When the effect by exciting force, referring to
Fig. 8, horizontal decoupled components and workbench 3 can regard an entirety, the Kinematic Decomposition in X/Y plane as, and horizontal exciting force passes through
Horizontal decoupled components pass to workbench 3, and vertical exciting force passes to workbench 3 by vertical decoupled components.When workbench 3 exists
When bearing the exciting force of horizontal and vertical both direction, the existing vertical motion displacement component S1 of motion process, and have horizontal fortune
Dynamic displacement component S2, their collective effects have synthesized motion profile of the workbench 3 in space.Finally it is converted into articulated linkage
6 rotation and the sliding of sliding block 11.Compensation for error, referring to Fig. 9, such as in XZ plane, cross connecting rod 5 and articulated linkage
It is immovable after 6 connections, an entirety can be regarded as.When the cumulative errors of installation center line and design centre line lead to dimensional discrepancy
When for L, then by the rotation (corner β) of articulated linkage 6 and the movement (slippage M) of sliding block 11 can effective compensation it is such inclined
Difference.Similarly, when the accumulated error of installation center line and design centre line causes horizontal direction dimensional discrepancy occur, pass through ten
The rotation of word connecting rod 5 and the movement of sliding block 11 can also be with the dimensional discrepancys of effective compensation horizontal direction.
In practical applications, above-mentioned vertical decoupled components will receive the effect of frequent vertical exciting force, so that sliding rail 10
Contact force between sliding block 11 increases, and the abrasion of sliding rail 10 and sliding block 11 is easily caused in horizontal sliding process, therefore,
Vertical decoupled components are needed to frequently replace, and also need to readjust the installation site of sliding rail 10 and workbench 3 after replacing.In order to
Solve the above problems, above-mentioned vertical decoupled components further include the shaft being set up on vertical vibrating generator 1 and for turn
Axis rotates the gag lever post limited, and one end of gag lever post is fixedly connected with shaft, and the other end and vertical vibrating generator 1 are fixed
Connection, sliding rail 10 are set to the outer peripheral surface of shaft along the axial direction of shaft, and the quantity of sliding rail 10 and sliding block 11 is multiple.In this way, working as
Wherein abrasion occurs in use for one group of sliding rail 10 and sliding block 11 when needing replacing, can be by gag lever post and shaft or vertical
Vibration machine 1 separates, and rotating shaft connects another set sliding rail 10 and sliding block 11 with vertical vibrating generator 1 and workbench 3
It connects, since the axis of shaft will not become, the relative position of sliding rail 10 and sliding block 11 will not change, and therefore, replace sliding rail 10
With the position for needing to readjust sliding rail 10 and workbench 3 after sliding block 11.
Illustratively, shaft is regular polygon perpendicular to the section of shaft axis, for example, square, each side of shaft
One group of sliding rail 10 and sliding block 11 are equipped on face.
Embodiment two
A kind of synchronous vibration experimental rig is present embodiments provided, referring to Figure 10 to Figure 11, including workbench 3, horizontal vibration
The decoupled components that dynamic generator 2, vertical vibrating generator 1 and embodiment one provide, workbench 3,2 and of horizontal vibration generator
Vertical vibrating generator 1 is all set on base 12.
Compared with prior art, the beneficial effect Yu embodiment one of synchronous vibration experimental rig provided in this embodiment provide
Decoupled components beneficial effect it is essentially identical, will not repeat them here.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of decoupled components, including horizontal decoupled components, which is characterized in that the horizontal decoupled components include cross connecting rod and
Articulated linkage, the cross connecting rod and articulated linkage are hinged, and the articulated linkage can rotate along the vertical direction；
In use, the both ends of decoupled components are hinged with horizontal vibration generator and workbench respectively.
2. decoupled components according to claim 1, which is characterized in that the articulated linkage is provided close to horizontal vibration
Device side, the cross connecting rod are provided close to workbench side.
3. decoupled components according to claim 1, which is characterized in that the both ends of the decoupled components are equipped with mounting base, solution
Coupling component is hinged by the first mounting base and workbench, hinged by the second mounting base and horizontal vibration generator.
4. decoupled components according to claim 3, which is characterized in that between the first mounting base and decoupled components, cross connect
Pass through mutually matched protrusion between bar and articulated linkage and between decoupled components and the second mounting base and groove is hinged.
5. decoupled components according to claim 4, which is characterized in that hinged by pin shaft between the groove and protrusion.
6. decoupled components according to claim 5, which is characterized in that one end of the pin shaft is machined with boss, the other end
It is threaded, the pin shaft is fastenedly connected after passing through raised and groove through-hole with nut；
Alternatively, the both ends of the pin shaft are threaded, the screw thread is fastenedly connected with nut.
7. decoupled components according to any one of claims 1 to 6, which is characterized in that it further include vertical decoupled components, it is described
Vertical decoupled components include sliding rail and the sliding block that is slidably connected with sliding rail, and the sliding rail is connect with vertical vibrating generator, institute
Sliding block is stated to connect with workbench.
8. decoupled components according to claim 7, which is characterized in that the vertical decoupled components further include being set up in vertically
Shaft on vibration machine and the gag lever post for being limited to shaft rotation；
One end of the gag lever post is fixedly connected with shaft, and the other end is fixedly connected with vertical vibrating generator；
The sliding rail is set to the outer peripheral surface of shaft along the axial direction of shaft, and the quantity of the sliding rail and sliding block is multiple.
9. decoupled components according to claim 8, which is characterized in that the shaft is positive perpendicular to the section of shaft axis
Polygon is equipped with sliding rail on each side of shaft.
10. a kind of synchronous vibration experimental rig, which is characterized in that occur including workbench, horizontal vibration generator, vertical vibrating
Device and the decoupled components as described in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392687.2A CN109341998B (en) | 2018-11-21 | 2018-11-21 | Decoupling assembly and synchronous vibration test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392687.2A CN109341998B (en) | 2018-11-21 | 2018-11-21 | Decoupling assembly and synchronous vibration test device |
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| CN109341998A true CN109341998A (en) | 2019-02-15 |
| CN109341998B CN109341998B (en) | 2021-03-02 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109341998B (en) | 2021-03-02 |
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