CN2864587Y - Shrinkage/inflation tester for symmetrical wire-pendant type mixing material - Google Patents
Shrinkage/inflation tester for symmetrical wire-pendant type mixing material Download PDFInfo
- Publication number
- CN2864587Y CN2864587Y CN 200520079450 CN200520079450U CN2864587Y CN 2864587 Y CN2864587 Y CN 2864587Y CN 200520079450 CN200520079450 CN 200520079450 CN 200520079450 U CN200520079450 U CN 200520079450U CN 2864587 Y CN2864587 Y CN 2864587Y
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- suspension
- lever
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a symmetrical suspension fiber type material shrinkage / expansion test instrument, which includes a base, a four corners of the base are provided with four corner spirals, a trisection places of the base middle line is provided with the brackets, the left and the right brackets are provided with a indicators, one end of a suspension fiber bracket sleeves the middle bracket, the other end of a suspension bracket is connected with the suspension fiber, the middle of the suspension fiber is provided with a lever, a meter of the indicator contacts the lever. The place about 4 to 6 millimeters away from the lever center is provided with a contact hinge. The utility model adopts a lever symmetry principle to avoid the system error which can be caused by a traditional test instruments. The utility model has the advantages of the high precision, no system error, simple equipment, more one-step molding specimens, wide range of the tested pieces shapes, and the application in different materials.
Description
Technical field
The utility model relates to a kind of deformation tester, particularly a kind of symmetrical suspension-wire type composite material shrink/expanded tester.
Technical background
Existing civil engineering material distortion---shrink (expansion) test and mainly contain following two kinds of ways:
A kind of is environmental cabinet test inorganic binder distortion---contraction (expansion):
Test philosophy: adopt moulding prism test specimen, paste foil gauge on the test specimen surface, in environmental cabinet, collect the deflection of test specimen by data collecting instrument, determine percentage of water loss with the back of weighing with the standby test specimen of batch moulding, deflection is calculated strain divided by test foil gauge length gauge, calculates the coefficient of shrinkage divided by percentage of water loss again.Following shortcoming is arranged: (1) foil gauge needs to be subjected to temperature, humidity change can have influence on test result with solidifying the gluing test specimen surface that is attached to and solidify glue, and is big to the test findings influence; (2) the test specimen length overall has two kinds of 24cm or 40cm, and the restriction of strained leaf length can only be measured 6～8cm deflection at most, if can test the deflection of test specimen integral body, and then measuring accuracy can improve greatly.
Another kind is a concrete deformation---shrink (expansion) tester (for example HSP540 type concrete shrinkage expansion tester):
Test philosophy: adopt master bar and dial gauge test test specimen datum length, and determine the contraction or expansion amount of test specimen to be tested with the temperature correction master bar length that producer provides, data processing is with method one; The problem that exists: (1) this instrument can't be got rid of dial gauge and influenced by temperature change and the distortion that produces; (2) this class testing takes the test specimen horizontal positioned to test, and has friction between test specimen bottom meeting this moment and the instrument, influences measuring accuracy; (3) because test specimen to be tested is a horizontal positioned, and test specimen takes up room greatly, therefore be not suitable in environmental cabinet, testing.
Summary of the invention
The purpose of this utility model is to provide a kind of symmetrical suspension-wire type composite material shrink/expanded tester, have that precision height, system error-free, equipment are simple, the one-shot forming number of test-pieces is many, big for test block change of shape amplitude, be suitable for the testing feature of different kind of material.
The technical solution of the utility model is achieved in that the utility model comprises base plate, settle four angle spirals at four angles of base plate, third-class office is provided with support on the base plate center line, set up dial gauge on the support of the left and right sides, one end of suspension support is enclosed within on the intermediate support, the other end of suspension support connects suspension, sets up lever in the middle of suspension, and the gauge outfit of dial gauge contacts with lever.
The contact hinge is set apart from 4-6mm place, lever center.
Place test specimen on the said base plate, test specimen with contact hinge contact.
The utility model adopts the lever symmetry principle to eliminate the systematic error that traditional test instrument itself produces, and promptly conventional test methodologies all can't be eliminated the influence of instrument self-deformation to the test result accuracy when the test test specimen shrinks (expansion);
By suspension is set, scalable test test specimen microdeformation amount improves test accuracy; In addition, this instrument can also make this instrument can be used for the distortion of different materials according to selecting different accuracy to test for the material measuring accuracy requirement of measuring and monitoring the growth of standing timber---shrink (expansion) test; Changed the regulation of traditional instrument test, do not stipulated the sample dimensions of test material, the difficulty when having reduced the engineering site shaping test piece the test specimen shape;
Vertical carrying out adopted in test specimen test, and frictional resistance influence and take up room greatly when having remedied horizontal type testing tool test is unfavorable for being particluarly suitable for the shortcoming of testing in the environmental cabinet a plurality of test specimens being tested in environmental cabinet.
Description of drawings
Fig. 1 (a) is a facade structures synoptic diagram of the present utility model:
Fig. 1 (b) is a side structure synoptic diagram of the present utility model:
Fig. 2 is the utility model suspension supporting structure synoptic diagram:
Below in conjunction with accompanying drawing content of the present utility model is described in further detail.
Embodiment
Shown in Fig. 1 (a) and (b), the utility model comprises base plate 6, settle four angle spirals 5 at 6 four angles of base plate, third-class office is provided with support 9 on base plate 6 center lines, and left and right sides support 9 sets up dial gauge 1, and dial gauge 1 is fixed on the left and right sides support 9 by table folder 2, one end of suspension support 11 is enclosed within on the intermediate support 9, the other end of suspension support 11 connects suspension 8, sets up lever 7 in the middle of suspension 8, and the gauge outfit of dial gauge 1 contacts with lever 7.One air level 10 is arranged on base plate, and 3 contacts of contact hinge of lever 7 are on test specimen 4.
The course of work of the present utility model: tester is put into environmental cabinet, make air level 10 placed in the middle by adjusting angle spiral 5, test specimen 4 to be measured be placed on the base plate 6 after the leveling, with 7 on lever on suspension 8, and adjust the height of suspension 8, the contact hinge 3 on the lever 7 is contacted with test specimen 4.Dial gauge 1 utilization table folder 2 is fixed on two side stands 9, and makes dial gauge 1 probe engagement lever 7 (contact point can be adjusted voluntarily according to the enlargement factor that is provided with), read initial reading after waiting to stablize, test; In test subsequently, see through the watch window reading of data on the environmental cabinet; Carry out data processing and analysis at last.
Principle of work of the present utility model
(1) amplifies deflection, improve measuring accuracy
When test specimen 4 shrinks owing to temperature change, be subjected to the action of gravity of the contact hinge 3 of welding on the lever 7, contact hinge 3 is closely contacted with test specimen 4 all the time, and contact hinge 3 apart from the distance of suspension 8 less than the distance (both than ratio maximum can reach 1: 20) of dial gauge apart from suspension, this moment test specimen 4 microdeformation amount scalable (for example can reach 20 times);
Because a dial gauge 1 has respectively been laid in the symmetria bilateralis position, when environment temperature changes, can eliminate the systematic error that causes because of support 9 distortion: for example suppose that the suspension enlargement factor is at 1 o'clock, under the cooling condition, this moment, support 9 all produced contraction, suppose that amount of contraction is a unit 2, the initial reading unit of being 2 of two tables then, this moment, if 10 unit deformation amounts when taking place in test specimen 4 again, the right side dial gauge is rotated in the forward, and reading is 12, and left side dial gauge retrograde rotation, reading is-8, both absolute values and mean value be the deflection of test specimen 4.
Claims (3)
1, symmetrical suspension-wire type composite material shrink/expanded tester, comprise base plate (6), it is characterized in that: settle four angle spirals (5) at (6) four angles of base plate, third-class office is provided with support (9) on base plate (6) center line, set up dial gauge (1) on the left and right sides support (9), an end of suspension support (11) is enclosed within on the intermediate support (9), and the other end of suspension support (11) connects suspension (8), set up lever (7) in the middle of suspension (8), the gauge outfit of dial gauge (1) contacts with lever (7).
2, symmetrical suspension-wire type composite material shrink/expanded tester according to claim 1 is characterized in that, contact hinge (3) is set apart from 4-6mm place, lever (7) center.
3, symmetrical suspension-wire type composite material shrink/expanded tester according to claim 2 is characterized in that, said base plate (6) go up to be placed test specimen (4), test specimen (4) with contact hinge (3) point and contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079450 CN2864587Y (en) | 2005-09-29 | 2005-09-29 | Shrinkage/inflation tester for symmetrical wire-pendant type mixing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079450 CN2864587Y (en) | 2005-09-29 | 2005-09-29 | Shrinkage/inflation tester for symmetrical wire-pendant type mixing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2864587Y true CN2864587Y (en) | 2007-01-31 |
Family
ID=37677037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520079450 Expired - Fee Related CN2864587Y (en) | 2005-09-29 | 2005-09-29 | Shrinkage/inflation tester for symmetrical wire-pendant type mixing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2864587Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362691A (en) * | 2020-10-29 | 2021-02-12 | 辽宁科技大学 | Device and method for detecting coal expansion pressure |
| CN112361969A (en) * | 2020-11-20 | 2021-02-12 | 中国航空工业集团公司北京长城计量测试技术研究所 | Detection apparatus for suspension wire angularity for acceleration sensor |
-
2005
- 2005-09-29 CN CN 200520079450 patent/CN2864587Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112362691A (en) * | 2020-10-29 | 2021-02-12 | 辽宁科技大学 | Device and method for detecting coal expansion pressure |
| CN112362691B (en) * | 2020-10-29 | 2024-02-13 | 辽宁科技大学 | Device and method for detecting coal expansion pressure |
| CN112361969A (en) * | 2020-11-20 | 2021-02-12 | 中国航空工业集团公司北京长城计量测试技术研究所 | Detection apparatus for suspension wire angularity for acceleration sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |