CN104964877B - A kind of device for testing stiffness and system - Google Patents
A kind of device for testing stiffness and system Download PDFInfo
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- CN104964877B CN104964877B CN201510454336.XA CN201510454336A CN104964877B CN 104964877 B CN104964877 B CN 104964877B CN 201510454336 A CN201510454336 A CN 201510454336A CN 104964877 B CN104964877 B CN 104964877B
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Abstract
The invention discloses a kind of device for testing stiffness and system, its device includes：Test bracket, test bracket includes first body of rod, second body of rod, the 3rd body of rod and the 4th body of rod be arrangeding in parallel；The installation portion being fixed on first body of rod and second body of rod；It is installed on the displacement transducer on installation portion；The force section being slidably connected with the 3rd body of rod and the 4th body of rod, force section can be slided along the bearing of trend of the 3rd body of rod and the 4th body of rod；Wherein, displacement transducer is located at the side of force section；And the pressure sensor being connected with force section.The device for testing stiffness of the present invention, the pressure that test specimen to be measured is subject to and the displacement produced can be tested out simultaneously, so that the rigidity of test specimen to be measured is tested out, and simple in construction, compact, it is easy to carry.
Description
Technical field
The present invention relates to auto parts and components testing field, more particularly to a kind of device for testing stiffness and system.
Background technology
Rigidity represents the ability of the material, component or structure resistance to deformation acted on by external force, and rigidity is higher, object performance
More " hard ".Its result can influence the universality energy such as service life and intrinsic frequency of component, and the calculating of rigidity value needs power
With two physical quantitys of displacement, relatively common in existing test equipment is that measurement power and displacement, such as hand can be implemented separately
Hold formula dynamometer, amesdial etc., although relatively lighter, but one of physical quantity can only be measured, two such independence
It is highly difficult that equipment, which is put together and used,；And power and displacement can be realized while that measure is all some large scale equipments such as MTS
Equipment, this kind equipment is larger because of volume, mostly fixes on the ground, it is difficult to flexibly use.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of device for testing stiffness and system, existing skill is solved
Power is measured in art simultaneously and the device structure of displacement is complicated, volume is big, it is impossible to the problem of flexibly using.
According to one aspect of the present invention there is provided a kind of device for testing stiffness, including：
Test bracket, test bracket includes first body of rod, second body of rod, the 3rd body of rod and the 4th body of rod be arrangeding in parallel；
The installation portion being fixed on first body of rod and second body of rod；
It is installed on the displacement transducer on installation portion；
The force section being slidably connected with the 3rd body of rod and the 4th body of rod, force section can prolonging along the 3rd body of rod and the 4th body of rod
Stretch direction slip；Wherein, displacement transducer is located at the side of force section；And
Pressure sensor is arranged on force section.
Alternatively, test bracket also includes：First platform and the second platform, wherein, first body of rod, second body of rod, the 3rd
The body of rod and the 4th body of rod are vertically installed between the first platform and the second platform.
Alternatively, device for testing stiffness also includes：It is arranged at the firm handle on the first platform.
Alternatively, a through hole is provided with the second platform, force section is " T " font, the first end of force section and the 3rd bar
Body is slidably connected, and the second end and the 4th body of rod of force section are slidably connected, and the 3rd end of force section passes through through hole and pressure sensing
Device is connected.
Alternatively, device for testing stiffness also includes：With the pressure head of force section three-terminal link.
According to another aspect of the present invention, a kind of rigidity testing system is additionally provided, including rigidity as described above is surveyed
Trial assembly is put, and a data acquisition device, and the first input end of data acquisition device is connected with displacement transducer, data acquisition dress
The second input put is connected with pressure sensor, and the output end of data acquisition device is connected with a display device.
The beneficial effect of embodiments of the invention is：A kind of device for testing stiffness and system, by force section to be tested
Part applies a test pressure, and pressure sensor can measure the test pressure size；And tested out by displacement transducer to be tested
Displacement of the part under test pressure, so as to measure the rigidity of the test specimen to be measured according to test pressure size and displacement；In addition,
Simple in construction, the compact of the device for testing stiffness, it is easy to carry, possesses very high flexibility.
Brief description of the drawings
Fig. 1 represents the structural representation of the device for testing stiffness of the present invention；
Fig. 2 represents the annexation figure of the rigidity testing system of the present invention.
Wherein in figure：1st, test bracket, 2, installation portion, 3, displacement transducer, 4, force section, 5, pressure sensor, 6, steady
Gu handle, 7, pressure head；
11st, first body of rod, 12, second body of rod, the 13, the 3rd body of rod, the 14, the 4th body of rod, the 15, first platform, 16, second is flat
Platform.
Embodiment
The exemplary embodiment of the present invention is more fully described below with reference to accompanying drawings.Although showing the present invention in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention without should be by embodiments set forth here
Limited.Conversely it is able to be best understood from the present invention there is provided these embodiments, and can be by the scope of the present invention
Complete conveys to those skilled in the art.
Embodiment
As shown in figure 1, The embodiment provides a kind of device for testing stiffness, specifically including：Test bracket 1, peace
Dress portion 2, displacement transducer 3, force section 4 and pressure sensor 5.Wherein, test bracket 1 includes first body of rod be arrangeding in parallel
11st, second body of rod 12, the 3rd body of rod 13 and the 4th body of rod 14, installation portion 2 are fixed on first body of rod 11 and second body of rod 12, position
Displacement sensor 3 is installed on installation portion 2；Force section 4 is arranged at the lower section of displacement transducer 3, and with the 3rd body of rod 13 and the 4th
The body of rod 14 is slidably connected, in addition, force section 4 can be slided along the bearing of trend of the 3rd body of rod 13 and the 4th body of rod 14, displacement sensing
Device 3 can test the displacement of force section 4.Pressure sensor 5 is arranged on force section 4, and pressure sensor can be tested on force section 4
Test force size.Wherein, force section 4 is provided at both ends with force handle, can apply test force by artificially to it, also or logical
Cross other modes and apply test force, the conventional force mechanism of such as hydraulic pressure or air pressure to it.
One test pressure is applied to test specimen to be measured by force section 4, pressure sensor 5 can measure the test pressure size；
And deformation quantity of the test specimen to be measured under test pressure, i.e. displacement are tested out by displacement transducer 3, so that according to test pressure
Size measures the rigidity of the test specimen to be measured with displacement；In addition, the device for testing stiffness simple in construction, compact, it is easy to
Carry, possess very high flexibility.
Alternatively, the test bracket 1 also includes：First platform 15 and the second platform 16, first body of rod 11, second body of rod
12nd, the 3rd body of rod 13 and the 4th body of rod 14, which are respectively perpendicular, is arranged between the first platform 15 and the second platform 16.Wherein, the 3rd bar
The body of rod 14 of body 13 and the 4th is disposed as cylindrical rod, to reduce the frictional force between force section 4.
Alternatively, a firm handle 6 is additionally provided with the first platform 15, when needing one test specimen to be measured of test, can be led to
Cross the firm handle to play a part of stablizing the firm test device, in order to apply test pressure to test specimen to be measured.
Alternatively, a through hole is provided with the second platform 16, force section 4 is set to " T " font, the first end of force section 4
It is slidably connected with the 3rd body of rod 13, the second end and the 4th body of rod 14 of force section 4 are slidably connected, and the 3rd end of force section 4 is passed through
The through hole of second platform 16 is connected with pressure sensor 5.Wherein above-mentioned be slidably connected can be bearing connection, bearing pin connection etc..
Alternatively, equably acted on to test specimen to be measured to ensure to be applied to the test pressure of test specimen to be measured, the rigidity
Test device also includes a pressure head 7, the pressure head 7 and the three-terminal link of force section 4, that is to say, that the 3rd end in force section 4
It is connected with pressure sensor 5 and pressure head 7 in turn.Pressure sensor 5 can test the test pressure at the end of force section 4 the 3rd, that is,
Say the test pressure that pressure sensor 5 can be tested on pressure head 7.The test pressure that can be thus tested according to pressure sensor 5
Relation between the displacement that the test specimen to be measured that power and displacement transducer 3 are tested is produced under test pressure, calculates this and treats
The rigidity of test block.
According to the other side of the embodiment of the present invention, a kind of rigidity testing system is additionally provided, is specifically included：As above institute
The device for testing stiffness stated, and a data acquisition device.Wherein, the first input end and displacement transducer of data acquisition device
3 connections, the second input of data acquisition device is connected with pressure sensor 5, the output end of data acquisition device and a display
Device is connected.Wherein, the signal that data acquisition device is used to export displacement transducer 3 is converted to displacement, by pressure sensing
The signal of device output is converted to pressure value.The effect of display device is that the value for exporting data acquisition device is shown, with clear
The test pressure and deformation quantity of test specimen to be measured are intuitively reflected in Chu.
To sum up, a test pressure is applied to test specimen to be measured by force section, it is big that pressure sensor can measure the test pressure
It is small；And displacement of the test specimen to be measured under test pressure is tested out by displacement transducer so that according to test pressure size with
Displacement measures the rigidity of the test specimen to be measured；In addition, the device for testing stiffness simple in construction, compact, it is easy to carry, have
For very high flexibility.
The above is the preferred embodiment of the present invention, it should be pointed out that for the ordinary person of the art,
Some improvements and modifications can also be made under the premise of the principle for not departing from the present invention, these improvements and modifications are also in the guarantor of the present invention
In the range of shield.
Claims (6)
1. a kind of device for testing stiffness, it is characterised in that including：
Test bracket (1), the test bracket (1) includes first body of rod (11), second body of rod (12), the 3rd bar be arrangeding in parallel
Body (13) and the 4th body of rod (14)；
The installation portion (2) being fixed on first body of rod (11) and second body of rod (12)；
It is installed on the displacement transducer (3) on the installation portion (2)；
The force section (4) being slidably connected with the 3rd body of rod (13) and the 4th body of rod (14), the force section (4) can edge
The bearing of trend of 3rd body of rod (13) and the 4th body of rod (14) is slided；Wherein, institute's displacement sensors (3) are located at institute
State the side of force section (4)；And
Pressure sensor (5) is arranged on the force section (4).
2. device for testing stiffness according to claim 1, it is characterised in that the test bracket (1) also includes：First is flat
Platform (15) and the second platform (16), wherein, first body of rod (11), second body of rod (12), the 3rd body of rod (13) and the 4th bar
Body (14) is vertically installed between first platform (15) and second platform (16).
3. device for testing stiffness according to claim 2, it is characterised in that the device for testing stiffness also includes：Set
Firm handle (6) on first platform (15).
4. device for testing stiffness according to claim 2, it is characterised in that one is provided with second platform (16) and is led to
Hole, the force section (4) is " T " font, and first end and the 3rd body of rod (13) of the force section (4) are slidably connected, institute
The second end and the 4th body of rod (14) for stating force section (4) are slidably connected, and the 3rd end of the force section (4) leads to through described
Hole is connected with the pressure sensor (5).
5. device for testing stiffness according to claim 4, it is characterised in that the device for testing stiffness also includes：With institute
State the pressure head (7) of the three-terminal link of force section (4).
6. a kind of rigidity testing system, it is characterised in that including the device for testing stiffness as described in any one of Claims 1 to 5,
The rigidity testing system also includes a data acquisition device, and the first input end of the data acquisition device is passed with the displacement
Sensor (3) is connected, and the second input of the data acquisition device is connected with the pressure sensor (5), the data acquisition
The output end of device is connected with a display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510454336.XA CN104964877B (en) | 2015-07-29 | 2015-07-29 | A kind of device for testing stiffness and system |
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|---|---|---|---|
| CN201510454336.XA CN104964877B (en) | 2015-07-29 | 2015-07-29 | A kind of device for testing stiffness and system |
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| CN104964877A CN104964877A (en) | 2015-10-07 |
| CN104964877B true CN104964877B (en) | 2017-10-17 |
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| CN201510454336.XA Active CN104964877B (en) | 2015-07-29 | 2015-07-29 | A kind of device for testing stiffness and system |
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| CN105651527B (en) * | 2016-03-02 | 2018-03-02 | 武汉信测标准技术服务有限公司 | Portable rigid testboard bay |
| CN107063598B (en) * | 2017-04-11 | 2019-09-27 | 北京航空航天大学 | A kind of labyrinth stiffness parameters automatic test platform |
| CN107219071A (en) * | 2017-07-10 | 2017-09-29 | 宁波赛福汽车制动有限公司 | Hydraulic motorcycle brake system rigidity test frock |
| CN113084812B (en) * | 2021-04-09 | 2022-06-21 | 吉林大学 | Method for evaluating rigidity performance of tail end of robot |
| CN113588418A (en) * | 2021-07-08 | 2021-11-02 | 一汽奔腾轿车有限公司 | Device and method for measuring surface rigidity of automobile body covering part |
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