CN110514521A - A kind of separate type uniaxial loading mechanics vibration testing device - Google Patents
A kind of separate type uniaxial loading mechanics vibration testing device Download PDFInfo
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- CN110514521A CN110514521A CN201910923702.XA CN201910923702A CN110514521A CN 110514521 A CN110514521 A CN 110514521A CN 201910923702 A CN201910923702 A CN 201910923702A CN 110514521 A CN110514521 A CN 110514521A
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- loading
- load
- tightrope
- hanging bracket
- pedestal
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000011068 loading method Methods 0.000 title claims abstract description 59
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000725 suspension Substances 0.000 claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims description 10
- 229920001778 nylon Polymers 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000009864 tensile test Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 208000009146 rhinoscleroma Diseases 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention discloses a kind of separate type uniaxial loading mechanics vibration testing devices, mainly include fixing end pedestal, loading end pedestal, hanger bar, fixing end hanging bracket, loading end hanging bracket, load tightrope, digital display tensiometer；Fixing end hanging bracket, loading end hanging bracket are individually fixed in the top of fixing end pedestal and loading end pedestal, hanger bar both ends are fixed with fixing end hanging bracket, loading end hanging bracket respectively, test specimen one end to be measured is fixedly connected by load tightrope with fixing end pedestal, the other end after another load tightrope connection digital display tensiometer around axis wheel by being connected in loaded member, test specimen to be measured can be suspended from hanger bar by suspension strop, and hanger bar can be stretched freely.Apparatus of the present invention horizontal or vertical can be installed, and a variety of experimental enviroments can be flexibly coped with；And the mode from the hard collet of typical tensile testing machine and rigidly loaded is different, the present apparatus is loaded using tightrope, the vibration performance of test specimen is influenced it is small, especially free boundary the case where.
Description
Technical field
The present invention relates to a kind of separate type uniaxial loading mechanics vibration testing device, be particularly suitable for slender type it is soft/scleroma
Mechanics vibration testing analysis of the structure under low load stretching action.
Background technique
Purposes of the mechanical stretch testing machine in mechanical test is very extensive.Existing cupping machine or volume be big,
Load is high, at high cost, and collet is very big on the influence of the vibration characteristics of test specimen；It is small in size, load is low, it is small to be only used for testing
The performance of the Filamentous or membranaceous test specimen of size.When need to test slender type test specimen (such as bar and beam etc.) axial tension effect under
Vibration characteristics when, size is big in the longitudinal direction for test specimen, smaller on other directions while very sensitive to boundary, preferably
Loading device should can be applicable in the test specimen of different length, at the same load boundary the vibration of test specimen itself is influenced it is small, it is existing
Cupping machine is difficult to meet the requirements.
For the deficiency of existing cupping machine, one aspect of the present invention takes separation design mode, by fixing end and adds
It carries end separately to fix at the desired position, and horizontal or vertical can install, can flexibly cope with a variety of experimental enviroments；It is another
Aspect, the mode from the hard collet of typical tensile testing machine and rigidly loaded is different, and the present apparatus is loaded using tightrope, to test specimen
Vibration performance influence it is small, especially free boundary the case where.Finally, the present apparatus can be directly anchored on common test platform, lead to
Cross rotation load screw adjustment load dynamics, possess test it is convenient, using it is simple and at low cost the advantages that.
Summary of the invention
It is an object of the invention to be directed to the deficiency of above-mentioned existing cupping machine, a kind of separate type uniaxial loading power is provided
Learn vibration testing device.
The technical solution adopted by the invention is as follows:
A kind of separate type uniaxial loading mechanics vibration testing device, fixing end pedestal, loading end pedestal, hanger bar, fixing end are outstanding
Hanging bracket, loading end hanging bracket, load tightrope, digital display tensiometer；Fixing end hanging bracket, loading end hanging bracket are solid respectively
Dingan County is loaded on the top of fixing end pedestal and loading end pedestal, and the two is parallel, and hanger bar both ends hang branch with fixing end respectively
Frame, loading end hanging bracket are fixed, and one end of test specimen to be measured is fixedly connected by a load tightrope with fixing end pedestal, another
End is connected in loaded member by bypassing the axis wheel being installed on loading end pedestal after another load tightrope connection digital display tensiometer,
Test specimen to be measured can be suspended from hanger bar by suspension strop, and hanger bar can be stretched freely at the non-suspension position close to loading end.
In above-mentioned technical proposal, further, the hanger bar includes suspension rod set and hanger bar core, and hanger bar core is inserted
Enter to hang and forms telescopic sleeving rod structure in rod set.
Further, the loaded member includes load screw and load boss, load tightrope around after axis wheel with load
The connection of screw end, load boss are fixed on loading end side of base, are above provided with threaded hole, load screw and corresponding threaded holes
It closes.
Further, the axis wheel includes shaft, runner, and shaft both ends are fixed on loading end pedestal, and runner is placed on
Outside shaft, connect by bearing with shaft, can opposite shaft be freely rotated.
Further, the fixing end pedestal and loading end pedestal are both provided with floor, can be fixed by bolts in examination
Test platform.
Further, the suspension strop generallys use rubber band.
Further, the load tightrope generallys use nylon rope, and different according to pulling force difference selection needed for testing
Diameter, such as: pulling force be 0-200N use diameter 2mm nylon rope, 200-400N use diameter 3mm nylon rope, 400-
1000N uses the nylon rope of diameter 4mm.
The beneficial effects of the present invention are:
(1) apparatus of the present invention are using fixing end and loading end separation design, and are freely installed according to experimental condition, can be horizontal
Or vertically-mounted test, the load and vibration test that can be suitable in more situations；
(2) apparatus of the present invention apply load using tightrope, can effectively reduce the shadow that test block vibration performance is treated on load boundary
It rings；And load dynamics is shown by digital display tensiometer, and change load size by manually adjusting load screw, it is easy to operate, at
This is low.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of front view of separate type uniaxial loading mechanics vibration testing device；
Fig. 2 is a kind of axonometric drawing of separate type uniaxial loading mechanics vibration testing device sheave segment；
Fig. 3 is a kind of top view of separate type uniaxial loading mechanics vibration testing device；
Fig. 4 is a kind of side view of separate type uniaxial loading mechanics vibration testing device；
Fig. 5 is a kind of axonometric drawing of separate type uniaxial loading mechanics vibration testing device.
In figure: 1, fixing end pedestal；2, tightrope fixed screw；3, fixing end hanging bracket；4, rod set is hung；5, hanger bar
Core；7, loading end hanging bracket；13, tightrope is loaded；8, screw is loaded；9, boss is loaded；10, long screw；11, floor；12, add
Carry end group seat；6, digital display tensiometer；14, test specimen to be measured；15, resilient suspension tightrope；16, hold-doun nut；17, axis wheel；18, axis
Bar；19, bearing；20, short screw.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
In example as shown in Figure 1,3, a kind of separate type uniaxial loading mechanics vibration testing device mainly includes fixing end pedestal 1,
The mountable two tightrope fixed screws 2 in 1 upper surface of fixing end pedestal, fixing end hanging bracket 3 are fixed by two short screw 20
In 1 upper surface of fixing end pedestal, hangs 4 one end of rod set and be fixed in fixing end hanging bracket 3, the fixed peace in 5 one end of hanger bar core
Loaded in loading end hanging bracket 7, telescopic sleeving rod structure is formed in other end insertion suspension rod set 4, loading end hanging bracket 7 is logical
It crosses two short screw 20 and is fixed on 12 upper surface of loading end pedestal, tightrope fixed screw is sequentially connected by connection load tightrope 13
2, test specimen 14 and digital display tensiometer 6 to be measured, and connect around after the axis wheel 17 being set on loading end pedestal with load 8 end of screw
It connects, load screw 8 is connected through a screw thread with the load boss 9 on loading end pedestal 12, fixing end pedestal 1 and loading end pedestal 12
It can be fixedly mounted on testing stand by long screw 10, floor 11 can be had additional on two pedestals to increase stability,
Two bearings 19 are installed inside axis wheel 17, shaft 18 passes through bearing 19, and is fixed on loading end pedestal 12 with hold-doun nut 16,
Wheel body is sleeved on outside shaft, and opposite shaft can be realized by bearing is freely rotated (such as Fig. 2).
When the dynamics of stretching is smaller, needs to be hung on test specimen 14 to be measured in hanger bar with resilient suspension tightrope 15, work as drawing
Stretch degree is larger when being enough pull-up test specimen 14 to be measured, can choose and does not hang.
In the separate type uniaxial loading mechanics vibration testing device, fixing end pedestal 1 and loading end pedestal 12 are usually adopted
It is firmly fixed with the biggish metal material of density such as cast iron or stainless steel making, and by floor 11 and each five long screws 10
On testing stand, the resonant frequency of present apparatus pedestal is reduced, reduces the influence for treating test block vibration test.Telescopic sleeving rod structure
Be made of suspension rod set 4 with hanger bar core 5 and be made of light aluminum alloy, length can stretch, to hang test specimen to be measured and
Other instruments.Resilient suspension tightrope 15 is needed using the preferable flexible material such as rubber band of elasticity, to reduce the influence to vibration.
It tightens tightrope fixed screw 2 and is used to quickly and easily fixed load tightrope 13.Load tightrope 13 needs to select soft and elastic poor
Material such as nylon rope etc., and select line footpath according to strength is stretched, as 0-200N select 2mm, 200-400N select 3mm,
400-1000N selects the nylon rope etc. of 4mm, selects thin, as far as possible in the range of intensity allows to reduce the influence to vibration.Load
Screw 8 need to be manufactured using high strength steel, and flight pitch is small, with accurate control load dynamics.
The step of being tested using the device of the invention is as follows:
(1) mounting distance of fixing end pedestal and loading end pedestal is determined according to the size of test specimen to be measured, and selects to be horizontally mounted
Or it is vertically-mounted；When vertically-mounted, installation suspended portion (hanger bar and suspension strop) is not needed, it is vertically-mounted such as Fig. 4 institute
Show；When being horizontally mounted and loading tensile is smaller, needs to install suspended portion and be used to hang test specimen to be measured, as shown in figure 5, pulling force
When big, suspension can not had to；
(2) suitable digital display tensiometer and the connecting rope of load (i.e. load tightrope) are selected according to required pulling force size.According to
Pulling force size selects the tightrope of different line footpaths, selects thinner tightrope as far as possible, and effect is more preferable；It is suitable according to the selection of pulling force size
Tensiometer selects light weight, range suitable and instrument with high accuracy as far as possible；
(3) method for selecting test specimen to connect with tightrope according to test specimen situation.When test specimen two ends have suitable tie point, tightrope is used
It is directly connected to；Otherwise, when test specimen two ends can bore aperture, then aperture is passed through with tightrope by drilling apply pulling force, it is this
Loading method is simple, and load edge effect is small, especially suitable when constraining direction of vibration non-displacement；When uncomfortable bench drill aperture
When, it needs according to the corresponding collet of test specimen 3D printing.The edge effect of collet is larger, has certain influence to test specimen vibration characteristics；
(4) it installs equipment, adjusts tightrope length and load screw to just tensing.It needs that vibration excitor and sensing are installed by experiment
The vibration experiments equipment such as device, is ready for testing；
(5) it according to test requirements document, adjusts load screw and changes pulling force size, and carry out test specimen vibration-testing；
(6) it if to carry out the experiment of different test specimens and different loading directions, repeats (1), (2), (3), (4) and (5).
Technical solution provided by the present invention is described in detail above.Specific case used herein is to this hair
Bright principle and embodiment is expounded, method of the invention that the above embodiments are only used to help understand and its
Core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention
In range.
Claims (7)
1. a kind of separate type uniaxial loading mechanics vibration testing device, which is characterized in that mainly include fixing end pedestal (1), add
Carry end group seat (12), hanger bar, fixing end hanging bracket (3), loading end hanging bracket (7), load tightrope (13), digital display pulling force
It counts (6)；Fixing end hanging bracket (3), loading end hanging bracket (7) are fixedly installed in fixing end pedestal (1) and loading end respectively
The top of pedestal (12), and the two is parallel, hanger bar both ends respectively with fixing end hanging bracket (3), loading end hanging bracket (7)
Fixed, one end of test specimen to be measured is fixedly connected by a load tightrope (13) with fixing end pedestal (1), and the other end passes through another
Load tightrope (13) connection digital display tensiometer (6) is connected to loaded member afterwards around the axis wheel being installed on loading end pedestal (12)
On, test specimen to be measured can be suspended from hanger bar by resilient suspension tightrope (15), and hanger bar is free at the extension position of loading end.
2. separate type uniaxial loading mechanics vibration testing device according to claim 1, which is characterized in that the suspension
Bar includes suspension rod set (4) and hanger bar core (5), forms telescopic sleeving rod structure in hanger bar core (5) insertion suspension rod set (4).
3. separate type uniaxial loading mechanics vibration testing device according to claim 1, which is characterized in that the load
Part includes load screw (8) and load boss (9), and load tightrope (13) connect with load screw end around after axis wheel, loads
Boss (9) is fixed on loading end pedestal (12) side, is above provided with threaded hole, and load screw and corresponding threaded holes close.
4. separate type uniaxial loading mechanics vibration testing device according to claim 1, which is characterized in that the axis wheel
Including shaft (18), runner, shaft (18) both ends are fixed on loading end pedestal (12), and runner is placed on outside shaft, passes through bearing
(19) connect with shaft (18), can opposite shaft be freely rotated.
5. separate type uniaxial loading mechanics vibration testing device according to claim 1, which is characterized in that the fixation
End group seat and loading end pedestal are both provided with floor, can be fixed by bolts in testing stand.
6. separate type uniaxial loading mechanics vibration testing device according to claim 1, which is characterized in that the suspension
Rope uses rubber band.
7. separate type uniaxial loading mechanics vibration testing device according to claim 1, which is characterized in that the load
Tightrope uses nylon rope, and selects different diameters according to pulling force difference needed for testing, and pulling force is that 0-200N uses diameter 2mm
Nylon rope, 200-400N use diameter 3mm nylon rope, 400-1000N use diameter 4mm nylon rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910923702.XA CN110514521A (en) | 2019-09-27 | 2019-09-27 | A kind of separate type uniaxial loading mechanics vibration testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910923702.XA CN110514521A (en) | 2019-09-27 | 2019-09-27 | A kind of separate type uniaxial loading mechanics vibration testing device |
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| CN110514521A true CN110514521A (en) | 2019-11-29 |
Family
ID=68632551
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| CN201910923702.XA Pending CN110514521A (en) | 2019-09-27 | 2019-09-27 | A kind of separate type uniaxial loading mechanics vibration testing device |
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|---|---|---|---|---|
| JPH03174077A (en) * | 1989-11-30 | 1991-07-29 | Tatsuta Electric Wire & Cable Co Ltd | End part of rope for tensile test |
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2019
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