CN206974699U - A kind of vehicle body Free Modal test tool - Google Patents
A kind of vehicle body Free Modal test tool Download PDFInfo
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- CN206974699U CN206974699U CN201720890155.6U CN201720890155U CN206974699U CN 206974699 U CN206974699 U CN 206974699U CN 201720890155 U CN201720890155 U CN 201720890155U CN 206974699 U CN206974699 U CN 206974699U
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- vehicle body
- test tool
- supporting plate
- screw
- air spring
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Abstract
The utility model provides a kind of vehicle body Free Modal test tool, including：Bottom plate；Clamping support, it is movably set on the bottom plate, the clamping support includes supporting plate；Air spring, it is fixedly installed in the supporting plate, for supporting automobile to be measured；Air pump, the gas delivery port of the air pump connect with the inflation inlet of the air spring；Wherein, the through hole passed through for the inflation inlet of the air spring is provided with the supporting plate；The inflation inlet of the air spring is connected through the through hole with the gas delivery port of the air pump.The utility model solves underslung Free Modal test tool and easily the frequency of suspension is coupled in automobile body modal during experiment, the problem of causing test result precision relatively low and not easy to install.
Description
Technical field
Frock technical field is the utility model is related to, more particularly to a kind of vehicle body Free Modal test tool.
Background technology
Along with the fast development of auto industry, automobile annual growth rate more and more higher, people are to security, reliable
Property, low oil consumption requirement simultaneously to noise, vibration and sound vibration roughness (Noise, Vibration, Harshness, abbreviation NVH)
Requirement also increasingly pay close attention to.Main parts size of the vehicle body as automobile, the quality of its NVH performances directly influence client couple
The satisfaction of vehicle, so the NVH performances of vehicle body are particularly important.
Developed in auto NVH in test process, the Free Modal experiment of body of a motor car, for determining the automobile of working condition
The vibration frequency and the vibration shape of each order mode of vehicle body, so as to control the mode of body of a motor car not with engine, road surface equal excitation
Coupling, influences vehicle level of NVH.
Existing body mode experimental rig is typically suspension type frock, uses the hang such as hoist cable or other spring ropes
Free Modal experiment is carried out, however, the frequency of suspension is easily coupled to Automobile by suspension type frock during experiment
In body mode, cause test result precision relatively low.Simultaneously traditional experimental rig majority is not to be directed to Automobile Body Design, is made
Into the testing time is wasted when mounted, testing efficiency is influenceed, wanting for high-volume body of a motor car Free Modal test can not be met
Ask.
Utility model content
The utility model provides a kind of vehicle body Free Modal test tool, and its purpose is to solve underslung freedom
Modal test frock is easily coupled to the frequency of suspension in automobile body modal during experiment, causes test result
The problem of precision is relatively low and not easy to install.
In order to achieve the above object, embodiment of the present utility model provides a kind of vehicle body Free Modal test tool, bag
Include：
Bottom plate；
Clamping support, it is movably set on the bottom plate, the clamping support includes supporting plate；
Air spring, it is fixedly installed in the supporting plate, for supporting automobile to be measured；
Air pump, the gas delivery port of the air pump connect with the inflation inlet of the air spring；
Wherein, the through hole passed through for the inflation inlet of the air spring is provided with the supporting plate；The air bullet
The inflation inlet of spring is connected through the through hole with the gas delivery port of the air pump.
Preferably, the clamping support also includes the support column being fixedly connected with the supporting plate.
Preferably, the first screw is provided with the supporting plate, the first end of the support column is provided with and described first
The second corresponding screw of screw；
The supporting plate is connected with the support column by the first screw described in screw bolt passes with second screw.
Preferably, the second end of the support column passes through the first bolt connection with the bottom plate.
Preferably, multiple T-slots are provided with the bottom plate；
The head of first bolt is arranged in the T-slot, and the screw rod of first bolt screws in the support column
The second end.
Preferably, the air pump includes air gauge.
Preferably, the periphery at the second end of the support column is arranged with stop nut.
Such scheme of the present utility model has following beneficial effect：
Vehicle body Free Modal test tool provided by the utility model, it is simple in construction, connected between each structure by bolt
Connect, convenient disassembly, maintenance cost is relatively low；The vehicle body of automobile to be measured can be directly placed on air spring, improve testing efficiency；
The utility model, which avoids, to be coupled to the modal frequency of suspension and support system in test specimen, be can adjust and is controlled
The rigid body mode frequency of vehicle body, the rigid body mode that efficiently avoid vehicle body are coupled in the elastomer modal frequency of vehicle body,
Improve measuring accuracy.The utility model solves underslung Free Modal test tool during experiment easily suspension
The frequency of system is coupled in automobile body modal, the problem of causing test result precision relatively low and not easy to install.
Brief description of the drawings
Fig. 1 is the bottom plate and clamping support for the vehicle body Free Modal test tool that embodiment of the present utility model provides
Schematic diagram；
Fig. 2 is the working state schematic representation for the vehicle body Free Modal test tool that embodiment of the present utility model provides；
Fig. 3 is the clamping support and air bullet for the vehicle body Free Modal test tool that embodiment of the present utility model provides
The structural representation of spring；
Fig. 4 represents the A-A of Fig. 1 clamping support to sectional view；
Fig. 5 is the structural representation for the air spring that embodiment of the present utility model provides；
Fig. 6 is the structural representation for the supporting plate that embodiment of the present utility model provides；
Fig. 7 is the structural representation for the bottom plate that embodiment of the present utility model provides.
Description of reference numerals：
1st, bottom plate；2nd, clamping support；3rd, supporting plate；4th, air spring；5th, through hole；6th, support column；7th, the first screw；8、
Second screw；9th, the first bolt；10th, T-slot；11st, stop nut；12nd, air pump；13rd, automobile to be measured；14th, inflation inlet.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
The finger such as degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer "
The orientation or position relationship shown be based on orientation shown in the drawings or position relationship, be for only for ease of description the utility model and
Simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with specific azimuth configuration
And operation, therefore it is not intended that to limitation of the present utility model.
The utility model is directed to the problem of existing, there is provided a kind of vehicle body Free Modal test tool, its purpose is to
Solve underslung Free Modal test tool and the frequency of suspension is easily coupled to body of a motor car mould during experiment
In state, the problem of causing test result precision relatively low and not easy to install.
Referring to Fig. 1 to Fig. 5, embodiment of the present utility model provides a kind of vehicle body Free Modal test tool, including：
Bottom plate 1；Bottom plate 1 can be directly placed on ground, or is spirally connected to strengthen stability with ground；
Alternatively, the material of bottom plate 1 is steel.
Clamping support 2, it is movably set on the bottom plate 1, the clamping support 2 includes supporting plate 3；
Wherein, four clamping supports 2 can be set on bottom plate 1, the vehicle body with automobile 13 to be measured contacts respectively；Specifically,
Supporting plate 3 directly contacts with the vehicle body of automobile 13 to be measured.
Air spring 4, it is fixedly installed in the supporting plate 3, for supporting automobile 13 to be measured；Wherein, air spring 4 is
Compressed air is filled with the container of a sealing, its elastic reaction is realized using gas compressibility.
Air pump 12, the gas delivery port of the air pump 12 connect with the inflation inlet 14 of the air spring 4；
Wherein, air pump 12 is connected by gas delivery port with the inflation inlet 14 of the air spring 4, into air spring 4
Compressed air is filled with, to realize the elastic reaction of air spring 4.
Alternatively, the material of inflation inlet 14 is rubber.
Referring to Fig. 6, the through hole 5 passed through for the inflation inlet 14 of the air spring 4 is provided with the supporting plate 3；Institute
The inflation inlet 14 for stating air spring 4 is connected through the through hole 5 with the gas delivery port of the air pump 12, so that in air pump 12
Gas is filled with.And the setting of through hole 5 ensures the gas delivery port stable connection of inflation inlet 14 and air pump 12；Due to vibrate directly from
Air spring is passed to the vehicle body of automobile 13 to be measured, avoid the modal frequency of suspension and support system is coupled to it is tested
In part, adjustable and control vehicle body rigid body mode frequency is realized, the rigid body mode that efficiently avoid vehicle body is coupled to car
In the elastomer modal frequency of body, measuring accuracy is improved.
Wherein, the screw for fixing air spring 4 is additionally provided with supporting plate 3.
Referring to Fig. 3 and Fig. 4, in specific embodiment of the utility model, the clamping support 2 also includes and the support
The support column 6 that plate 3 is fixedly connected.
That is, between bottom plate 1 and supporting plate 3, it is connected by support column 6.
Specifically, each clamping support 2 is provided with four support columns 6.
With continued reference to Fig. 3 and Fig. 4, in specific embodiment of the utility model, the first screw is provided with the supporting plate 3
7, the first end of the support column 6 is provided with second screw 8 corresponding with first screw 7；
The supporting plate 3 passes through the first screw 7 and second screw 8 described in screw bolt passes with the support column 6
Connection.
Wherein, supporting plate 3 and support column 6 are respectively arranged with inner bolt hole, i.e. the first screw 7 of supporting plate 3 and support column 6 the
Second screw 8 of one end, the first screw 7 and the second screw 8 are oppositely arranged, and supporting plate 3 and support column 6 are realized by wearing bolt
Connection.
Preferably, in specific embodiment of the utility model, the second end of the support column 6 and the bottom plate 1 pass through the
One bolt 9 connects.
Second end of support column 6 is additionally provided with inner bolt hole, is fixed by wearing the first bolt 9 with bottom plate 1.
Referring to Fig. 7, in specific embodiment of the utility model, multiple T-slots 10 are provided with the bottom plate 1；
The head of first bolt 9 is arranged in the T-slot 10, and the screw rod of first bolt 9 screws in the branch
Second end of dagger 6.
Multiple T-slots 10 are provided with bottom plate 1, and clamping support 2 selects installation site for convenience, adjusts four supports
The distance between seat, suitable for different vehicles, to improve the versatility of the frock.
T-slot 10 make it that the installation site between support column 6 and bottom plate 1 is adjustable, and the head of first bolt 9 is arranged on
In the T-slot 10, the screw rod of first bolt 9 is screwed in the inner bolt hole at the second end of the support column 6, realizes support column
Fixation between 6 and bottom plate 1, it is easy for installation.
Preferably, in specific embodiment of the utility model, the air pump 12 includes air gauge.
Air pump 12 adjusts the pressure of the gas of air inlet spring 4 by air gauge so that air spring 4 is automobile to be measured
13 provide different elastic force, to realize the regulation of the rigid body mode frequency of vehicle body.
Preferably, in specific embodiment of the utility model, the periphery at the second end of the support column 6 is arranged with locking spiral shell
Mother 11.The purpose of setting of stop nut 11 is to fix support column 6 and bottom plate 1.
The process of vehicle body Free Modal experiment is being carried out using vehicle body Free Modal test tool provided by the utility model
In, support base is fixed on bottom plate 1 first, air spring 4 is bolted on the plate of supporting plate 3, and by air bullet
Spring 4 is connected with air pump 12, and the vehicle body of automobile 13 to be measured is placed on air spring 4, and the pressure of air spring 4 is adjusted by air pump 12
Power, to realize the regulation of the rigid body mode frequency of vehicle body.
Vehicle body Free Modal test tool provided by the utility model, it is simple in construction, connected between each structure by bolt
Connect, convenient disassembly, maintenance cost is relatively low；The vehicle body of automobile 13 to be measured can be directly placed on air spring 4, improve test effect
Rate；The utility model, which avoids, to be coupled to the modal frequency of suspension and support system in test specimen, can adjust and
The rigid body mode frequency of vehicle body is controlled, the rigid body mode that efficiently avoid vehicle body is coupled in the elastomer modal frequency of vehicle body
Go, improve measuring accuracy.The utility model solves underslung Free Modal test tool easy handle during experiment
The frequency of suspension is coupled in automobile body modal, the problem of causing test result precision relatively low and not easy to install.
It should be understood that in the description of specification, the reference term " specific embodiment " mentioned, " at least one embodiment " or
It is of the present utility model at least one that " some embodiments " means that the special characteristic relevant with embodiment, structure or characteristic are included in
In embodiment or example.Therefore, " in one embodiment " that occurs everywhere in entire disclosure, " in one embodiment " or
" in certain embodiments " identical embodiment is not necessarily referred to.In addition, these specific feature, structure or characteristics can be any
Suitable mode combines in one or more embodiments.
In addition, in one or more embodiments herein, such as " comprising " or "comprising" are used to illustrate to exist to enumerate
Feature or component, but do not exclude the presence of one or more of the other feature enumerated or one or more of the other component.
In addition, in utility model embodiment, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
Any this actual relation or order be present.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
Calmly ", the term such as " setting " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；
Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, may be used
To understand concrete meaning of the above-mentioned term in the utility model as the case may be.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (7)
- A kind of 1. vehicle body Free Modal test tool, it is characterised in that including：Bottom plate；Clamping support, it is movably set on the bottom plate, the clamping support includes supporting plate；Air spring, it is fixedly installed in the supporting plate, for supporting automobile to be measured；Air pump, the gas delivery port of the air pump connect with the inflation inlet of the air spring；Wherein, the through hole passed through for the inflation inlet of the air spring is provided with the supporting plate；The air spring Inflation inlet is connected through the through hole with the gas delivery port of the air pump.
- 2. vehicle body Free Modal test tool according to claim 1, it is characterised in that the clamping support also includes The support column being fixedly connected with the supporting plate.
- 3. vehicle body Free Modal test tool according to claim 2, it is characterised in that is provided with the supporting plate One screw, the first end of the support column are provided with second screw corresponding with first screw；The supporting plate is connected with the support column by the first screw described in screw bolt passes with second screw.
- 4. vehicle body Free Modal test tool according to claim 2, it is characterised in that the second end of the support column with The bottom plate passes through the first bolt connection.
- 5. vehicle body Free Modal test tool according to claim 4, it is characterised in that be provided with the bottom plate multiple T-slot；The head of first bolt is arranged in the T-slot, and the screw rod of first bolt screws in the of the support column Two ends.
- 6. vehicle body Free Modal test tool according to claim 1, it is characterised in that the air pump includes air pressure Table.
- 7. vehicle body Free Modal test tool according to claim 4, it is characterised in that the second end of the support column Periphery is arranged with stop nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890155.6U CN206974699U (en) | 2017-07-21 | 2017-07-21 | A kind of vehicle body Free Modal test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890155.6U CN206974699U (en) | 2017-07-21 | 2017-07-21 | A kind of vehicle body Free Modal test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206974699U true CN206974699U (en) | 2018-02-06 |
Family
ID=61398332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720890155.6U Active CN206974699U (en) | 2017-07-21 | 2017-07-21 | A kind of vehicle body Free Modal test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206974699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549267A (en) * | 2019-09-06 | 2019-12-10 | 北京强度环境研究所 | Elastic supporting device |
-
2017
- 2017-07-21 CN CN201720890155.6U patent/CN206974699U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549267A (en) * | 2019-09-06 | 2019-12-10 | 北京强度环境研究所 | Elastic supporting device |
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