CN110376051A - A kind of uniaxial test load sharing system on testing machine - Google Patents
A kind of uniaxial test load sharing system on testing machine Download PDFInfo
- Publication number
- CN110376051A CN110376051A CN201910607924.0A CN201910607924A CN110376051A CN 110376051 A CN110376051 A CN 110376051A CN 201910607924 A CN201910607924 A CN 201910607924A CN 110376051 A CN110376051 A CN 110376051A
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- China
- Prior art keywords
- load sharing
- testing machine
- transmission rod
- sensor support
- bar
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- 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
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- 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
-
- 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
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The uniaxial test load sharing system that the invention discloses a kind of on testing machine, including transmission rod, flanged plate and load sharing bar, load sharing bar is equipped between upper and lower two pieces of flanged plates, flanged plate connects to form intersecting parallels structure with load sharing bar, transmission rod is also connected on the flanged plate, the transmission rod between load sharing bar, wherein, the first transmission rod bottom connecting with upper flange plate is fixed with load transducer, is connected with first sensor support below load transducer；It is connected with second sensor support at the top of the second transmission rod connecting with lower flange plate, is connected with displacement sensor between the first sensor support and second sensor support.Load sharing system measurement accuracy of the invention is high, under the premise of not changing original testing machine component, it can be realized and carry out the experiment load of high-precision small-range on existing wide range hydraulic dynamometer, by adjusting length of the transmission rod between two flanged plates, the experiment demand of different length sample can satisfy.
Description
Technical field
The present invention relates to materials mechanics experimental technology and equipment field more particularly to a kind of uniaxial examinations on testing machine
Test load sharing system.
Background technique
Universal testing machine is the common loading equipemtn in material mechanics experiment, is widely used in the stretching, curved of material
The mechanical property tests such as bent, shearing.The mechanical characteristic of material needs to obtain by the experiment of machanics of material, and accurately discloses material
Mechanical characteristic, need to obtain reliable experimental data in guarantee test.In the various factors for influencing experimental measurements,
It is also one of most important factor that the measurement accuracy of experimental facilities, which is most basic,.
Due to the limitation of apparatus assembly, the measurement accuracy of universal hydraulic testing machine is related with its range, the range of testing machine
Bigger, load and displacement measurement accuracy are lower.Therefore, high-precision small-range load test is carried out very on wide range testing machine
Hardly possible is realized.
For having been provided with the laboratory of larger range universal testing machine, if being weighed to carry out high-precision small-range experiment
Newly purchase small-range testing machine, it will experimentation cost is significantly greatly increased.
Summary of the invention
Goal of the invention: the uniaxial test load sharing system that it is an object of the present invention to provide a kind of on testing machine can overcome
The deficiency of wide range universal testing machine measurement accuracy provides a kind of measurement essence under the premise of not changing original testing machine component
The load sharing system that degree is high, handling is good.
Technical solution: the present invention includes transmission rod, flanged plate and load sharing bar, is equipped with load sharing between upper and lower two pieces of flanged plates
Bar, flanged plate and load sharing bar connect to form intersecting parallels structure, and transmission rod, the transmission rod are also connected on the flanged plate
Between load sharing bar, wherein the first transmission rod bottom connecting with upper flange plate is fixed with load transducer, load transducer
Lower section is connected with first sensor support；It is connected with second sensor support at the top of the second transmission rod connecting with lower flange plate,
Displacement sensor is connected between the first sensor support and second sensor support.
The transmission rod includes thread segment and smooth section two parts, wherein and thread segment passes through the circular hole in flanged plate center,
And it is fixed on flanged plate by nut.
The both ends of the load sharing bar are equipped with screw thread, and thread segment passes through corresponding connecting hole on flanged plate, passes through nut and method
Blue plate is fixed.
The aperture of the connecting hole is greater than the diameter of load sharing bar, guarantees that length of the rod piece between two flanged plates can be adjusted
It is whole.
The top of the load transducer is fixed on the thread segment end face of transmission rod, the other end and first sensor support
Connection.
The thread segment of the second sensor support and transmission rod connects.
It is respectively and fixedly provided with specimen holder at the top of the bottom of the first sensor support and second sensor support, for solid
Determine sample.
The center of circle of circular hole and connecting hole on the flanged plate is located on the center line of flanged plate short side.
Transmission rod, flanged plate and the load sharing bar is all made of spring steel production.
The control system of the load transducer and displacement sensor and testing machine connects, and is realized according to sensor signal
Control to testing machine.
Working principle: fractional load value is assigned on load sharing bar by load sharing system of the invention according to rigidity distribution principle,
Small-range load test is carried out to sample on wide range testing machine to realize；Pass through additional high accuracy load and displacement sensing
Device realizes the high-acruracy survey of experimental data；High-precision load and displacement transducer signal input are tested in machine control system,
The accurate control of acquisition and the experiment load of experimental data may be implemented.
The utility model has the advantages that load sharing system measurement accuracy of the invention is high, and under the premise of not changing original testing machine component, energy
Enough realize carries out the experiment load of high-precision small-range on existing wide range hydraulic dynamometer, by adjusting transmission rod in two flanges
Length between plate can satisfy the experiment demand of different length sample, expand the scope of application of existing universal testing machine, from
And significantly improve the economic benefit of wide range testing machine.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is top view of the invention；
Fig. 3 is A-A cross-sectional view in Fig. 2.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1 to Figure 3, the present invention includes transmission rod 1, flanged plate 2 and load sharing bar 3, transmission rod 1, flanged plate 2 and point
It carries bar 3 and is all made of spring steel material production, and be bolted and to form symmetrical load sharing frame.Wherein, upper and lower two pieces of methods
Load sharing bar 3 is equipped between blue plate 2, flanged plate 2 and the connection of load sharing bar 3 form intersecting parallels structure, and the center of flanged plate 2 is also connected with
Transmission rod 1, transmission rod 1 are located between two load sharing bars 3.The first transmission rod bottom connecting with upper flange plate is fixed with load biography
Sensor 4 is connected with first sensor support 5 below load transducer 4, a screw thread is fixed at the top of load transducer, uses
To connect with the threaded hole of 1 bottom end face of transmission rod；The second sensing is connected at the top of the second transmission rod connecting with lower flange plate
Device support 6 is connected with displacement sensor 7 between first sensor support 5 and second sensor support 6.
Transmission rod 1 uses cylindrical rod structure, including thread segment and smooth section two parts, wherein thread segment passes through flange
The circular hole in 2 center of plate, and be fixed on flanged plate 2 by upper and lower two nuts 10, and set in thread segment end face the center point
Set internal thread hole.Flanged plate 2 is rectangular slab, is equipped with two pieces, and load sharing bar 3 is connected between two pieces of flanged plates 2, and load sharing bar 3 is circle
Mast part is equipped with two, and two 3 parameters of load sharing bar are completely the same, and are located at the two sides of transmission rod 1, above and below load sharing bar 3
Both ends are equipped with screw thread, which passes through corresponding connecting hole on flanged plate 2, and is fixed by upper and lower two nuts 10
On flanged plate 2, the length for guaranteeing that two load sharing bars 3 are between two flanged plates 2 when installation is identical.The production connection of flanged plate 2
Kong Shi, it is desirable that the aperture of connecting hole is slightly larger than the diameter of load sharing bar 3, guarantees that length of the load sharing bar 3 between two flanged plates 2 can be with
Adjustment.Circular hole and connecting hole on flanged plate 2 are located on the line at 2 plane short side midpoint of flanged plate, wherein 1 circular hole of transmission rod
The center of circle be located at the midpoint of line, the connecting hole of two load sharing bars 3 is symmetrically distributed in its both ends.
As shown in Figure 1, being respectively fixed with a sample at the top of 5 bottom of first sensor support and second sensor support 6
Fixture 8 is fixed with sample 9, the central axis weight of two specimen holders 8 and upper and lower two transmission rods 1 between two specimen holders 8
It closes.First sensor support 5 and second sensor support 6 are rectangular slab, and left side is respectively provided with otic placode, two otic placodes respectively with
The both ends of displacement sensor 7 connect.The top of first sensor support 5 is equipped with load transducer 4, one end of load transducer 4
It is connect with first sensor support 5, the other end is fixed on the thread segment end face of transmission rod 1.The bottom of second sensor support 6
On the thread segment end face of fixed transmission rod 1 thereunder.
As shown in figure 3, displacement sensor 7 fixed between first sensor support 5 and second sensor support 6, is used for
Measure the displacement between two supports.Load transducer 4 and displacement sensor 7 are connect with the control system of testing machine, according to sensing
Device signal realizes the control to testing machine.When work, the smooth section of upper and lower two transmission rods is accommodated respectively in test machine grip holder
Interior, specimen holder is connected on corresponding sensor support base, guarantees that specimen holder is conllinear with the axle center of transmission rod.Load is sensed
The control system of device and displacement transducer signal line access testing machine, is controlled using the signal of load transducer and displacement sensor
Load.
By rigidity distribution method it is found that the rigidity of transmission rod determines the load range acted on sample.Assuming that sample
Rigidity is k1, the rigidity of load sharing bar is k2, when it is P that testing machine, which is applied to the load on transmission rod, then act on the lotus on sample
Load value are as follows:
By the signal of load transducer or displacement sensor input testing machine control terminal, it can be achieved that the automatic of experimental data
The accurate control of acquisition and sample load.
Two transmission rods of the invention are all divided into thread segment and smooth section, by adjusting the thread segment between two flanged plates
Length can be adapted for the sample of different length；The precision and range of load transducer and displacement sensor according to test requirements document into
Row is chosen, and should ensure that when installation and be reliably connected between each section, guarantees do not occur loosening and sliding in experimentation.
Claims (10)
1. a kind of uniaxial test load sharing system on testing machine, which is characterized in that including transmission rod, flanged plate and load sharing
Bar is equipped with load sharing bar between upper and lower two pieces of flanged plates, and flanged plate connects to form intersecting parallels structure with load sharing bar, the flanged plate
On be also connected with transmission rod, the transmission rod is between load sharing bar, wherein the first transmission rod bottom connecting with upper flange plate
Portion is fixed with load transducer, is connected with first sensor support below load transducer；Second connect with lower flange plate passes
It is connected with second sensor support at the top of power bar, is connected with position between the first sensor support and second sensor support
Displacement sensor.
2. a kind of uniaxial test load sharing system on testing machine according to claim 1, which is characterized in that described
Transmission rod includes thread segment and smooth section two parts, wherein thread segment passes through the circular hole in flanged plate center, and is fixed by nut
On flanged plate.
3. a kind of uniaxial test load sharing system on testing machine according to claim 1, which is characterized in that described point
The both ends for carrying bar are equipped with screw thread, and thread segment passes through corresponding connecting hole on flanged plate, fixed by nut and flanged plate.
4. a kind of uniaxial test load sharing system on testing machine according to claim 3, which is characterized in that the company
The aperture for connecing hole is greater than the diameter of load sharing bar.
5. a kind of uniaxial test load sharing system on testing machine according to claim 1, which is characterized in that the lotus
The top of set sensor is fixed on the thread segment end face of transmission rod.
6. a kind of uniaxial test load sharing system on testing machine according to claim 1, which is characterized in that described
The connection of the thread segment of second sensor support and transmission rod.
7. a kind of uniaxial test load sharing system on testing machine according to claim 1, which is characterized in that described
Specimen holder is respectively and fixedly provided at the top of the bottom of one sensor support base and second sensor support.
8. a kind of uniaxial test load sharing system on testing machine according to claim 1, which is characterized in that the method
The center of circle of circular hole and connecting hole on blue plate is located on the center line of flanged plate short side.
9. a kind of uniaxial test load sharing system on testing machine according to claim 1, which is characterized in that described
Transmission rod, flanged plate and load sharing bar are all made of spring steel production.
10. a kind of uniaxial test load sharing system on testing machine according to claim 1, which is characterized in that described
Load transducer and the control system of displacement sensor and testing machine connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910607924.0A CN110376051A (en) | 2019-07-08 | 2019-07-08 | A kind of uniaxial test load sharing system on testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910607924.0A CN110376051A (en) | 2019-07-08 | 2019-07-08 | A kind of uniaxial test load sharing system on testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110376051A true CN110376051A (en) | 2019-10-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910607924.0A Pending CN110376051A (en) | 2019-07-08 | 2019-07-08 | A kind of uniaxial test load sharing system on testing machine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339113A (en) * | 2008-08-19 | 2009-01-07 | 东南大学 | Machine tool main shaft axle journal shaft bushing friction performance test machine |
| KR20120033186A (en) * | 2010-09-29 | 2012-04-06 | 한국표준과학연구원 | Method of correcting indentation curve by considering worn indenter's morphology |
| CN103940669A (en) * | 2014-04-14 | 2014-07-23 | 中国矿业大学 | Method for testing mechanical property of solid filling material |
| CN106644184A (en) * | 2016-12-20 | 2017-05-10 | 同济大学 | Force measurement composite device based on serial connection principle |
| CN107101894A (en) * | 2017-04-21 | 2017-08-29 | 东南大学 | A kind of coarse-grained soil large scale cell cube specimen surface injection combined test apparatus |
| CN207300737U (en) * | 2017-09-08 | 2018-05-01 | 华北理工大学 | The strain full curve measuring device of concrete in uniaxial compression chord |
| CN207396187U (en) * | 2017-10-25 | 2018-05-22 | 北京富力通达科技有限公司 | A kind of device of big load testing machine loading and measurement |
-
2019
- 2019-07-08 CN CN201910607924.0A patent/CN110376051A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339113A (en) * | 2008-08-19 | 2009-01-07 | 东南大学 | Machine tool main shaft axle journal shaft bushing friction performance test machine |
| KR20120033186A (en) * | 2010-09-29 | 2012-04-06 | 한국표준과학연구원 | Method of correcting indentation curve by considering worn indenter's morphology |
| CN103940669A (en) * | 2014-04-14 | 2014-07-23 | 中国矿业大学 | Method for testing mechanical property of solid filling material |
| CN106644184A (en) * | 2016-12-20 | 2017-05-10 | 同济大学 | Force measurement composite device based on serial connection principle |
| CN107101894A (en) * | 2017-04-21 | 2017-08-29 | 东南大学 | A kind of coarse-grained soil large scale cell cube specimen surface injection combined test apparatus |
| CN207300737U (en) * | 2017-09-08 | 2018-05-01 | 华北理工大学 | The strain full curve measuring device of concrete in uniaxial compression chord |
| CN207396187U (en) * | 2017-10-25 | 2018-05-22 | 北京富力通达科技有限公司 | A kind of device of big load testing machine loading and measurement |
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Application publication date: 20191025 |
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| RJ01 | Rejection of invention patent application after publication |