CN108844451B - A multi-specification and multi-degree-of-freedom specimen expansion and contraction tester - Google Patents
A multi-specification and multi-degree-of-freedom specimen expansion and contraction tester Download PDFInfo
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- CN108844451B CN108844451B CN201810234179.5A CN201810234179A CN108844451B CN 108844451 B CN108844451 B CN 108844451B CN 201810234179 A CN201810234179 A CN 201810234179A CN 108844451 B CN108844451 B CN 108844451B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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Abstract
本发明涉及土木工程试验检测设备，尤其涉及一种多规格多自由度试件胀缩试验仪。包括置件装置与测量系统；置件装置包括滑道、置件平台、可升降支座和水准泡，滑道固定在置件平台上方，可升降支座固定在置件平台下方，水准泡固定在置件平台侧面；测量系统包括磁力表座、一级杆、二级杆、百分表或千分表、集线器和计算机，一级杆一端固定在磁力表座上，另一端与二级杆铰接，二级杆的另一端与百分表或千分表铰接，百分表或千分表与集线器以及计算机相连；磁力表座安装在滑道上，沿滑道滑动。本发明可测试试件不同部位胀缩变化，使用测试试验更加全面准确；扩展了试件胀缩测试范围；适用性强，是一种普遍适用的测试材料胀缩的仪器设备。
The invention relates to civil engineering test and detection equipment, in particular to a multi-specification and multi-degree-of-freedom test piece expansion and contraction tester. Including the component device and measurement system; the component device includes a slideway, a component platform, a liftable support and a level bubble, the slideway is fixed above the component platform, the liftable support is fixed below the component platform, and the level bubble is fixed On the side of the mounting platform; the measurement system includes a magnetic meter base, a primary rod, a secondary rod, a dial indicator or dial indicator, a hub and a computer. One end of the primary rod is fixed on the magnetic meter base, and the other end is connected to the secondary rod. Hinged, the other end of the secondary rod is hinged with the dial indicator or dial indicator, and the dial indicator or dial indicator is connected with the hub and the computer; the magnetic meter seat is installed on the slideway and slides along the slideway. The invention can test the expansion and contraction changes of different parts of the test piece, and the test test is more comprehensive and accurate; the expansion and contraction test range of the test piece is expanded;
Description
Technical Field
The invention relates to civil engineering test detection equipment, in particular to a multi-specification multi-degree-of-freedom test piece expansion and shrinkage tester.
Background
In experimental teaching, scientific research and engineering practice, civil engineering materials are often required to be tested for the expansion and contraction performance, a concrete contraction and expansion instrument is an instrument for measuring the length (volume) change of a concrete sample under a specified temperature condition, and the expansion and contraction performance of the civil engineering materials is mainly tested by the concrete contraction and expansion instrument at present.
The application range of the existing concrete contraction and expansion instrument can only measure rectangular concrete test blocks of 150mm multiplied by 515mm or rectangular concrete test blocks of 100mm multiplied by 10mm0 multiplied by 515mm specification. However, in projects such as roads and bridges, test pieces made of a plurality of materials are not rectangular, and have various sizes, and if a concrete contraction-expansion instrument is used, the size specification of the instrument and equipment cannot meet the requirement of the industrial test piece size specification. At present, many material expansion and contraction tests are researched and manufactured by teachers in colleges and universities, meet respective test requirements, and are small in application range and not universal.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a multi-specification multi-degree-of-freedom test piece expansion and shrinkage tester. The swelling and shrinking changes of different parts of the test piece can be tested, and the use test is more comprehensive and accurate; the expansion and contraction test range of the test piece is expanded; the applicability is strong, and the device is a universal instrument and equipment for testing the expansion and contraction of materials.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-specification multi-degree-of-freedom test piece expansion and shrinkage tester comprises a piece placing device and a measuring system; the workpiece placing device comprises a slide way, a workpiece placing platform, a lifting support and a leveling bubble, wherein the slide way is fixed above the workpiece placing platform, the lifting support is fixed below the workpiece placing platform, and the leveling bubble is fixed on the side surface of the workpiece placing platform; the measuring system comprises a magnetic gauge seat, a primary rod, a secondary rod, a dial indicator or a dial indicator, a concentrator and a computer, wherein one end of the primary rod is fixed on the magnetic gauge seat, the other end of the primary rod is hinged with the secondary rod, the other end of the secondary rod is hinged with the dial indicator or the dial indicator, and the dial indicator or the dial indicator is connected with the concentrator and the computer; the magnetic meter seat is arranged on the slideway and slides along the slideway.
The piece placing platform is of a cross frame structure formed by welding profile steel.
The lifting support comprises a base body and a support pipe; the upper part of the seat body is provided with a stud, one end of the supporting tube is fixed below the piece placing platform, the other end of the supporting tube is provided with an internal thread, and the supporting tube is connected with the seat body through the thread.
The magnetic meter base is provided with a magnetic switch which is a rotary handle for generating magnetism and eliminating magnetism.
The magnetic meter base bottom is equipped with the slider with slide matched with, and the slider is installed on the slide.
The dial indicator or the dial indicator is an electronic dial indicator or a dial indicator, the precision is 0.01mm or 0.001mm, and the dial indicator or the dial indicator is connected with the concentrator through a data line.
Compared with the prior art, the invention has the beneficial effects that:
(1) the magnetic gauge seat is arranged on the slideway and slides along the slideway, the two-stage hinge structure enables the dial indicator or the dial indicator to rotate at any angle, so that the expansion and contraction changes of different parts of a test piece can be tested, and the use test is more comprehensive and accurate; the invention has strong applicability and is a universal instrument and equipment for testing the expansion and contraction of materials.
(2) The workpiece placing platform is of a cross frame structure formed by welding profile steels, the expansion and contraction test range of the test piece is expanded, and expansion and contraction tests in multiple directions can better reflect material characteristics;
(3) the dial indicator or the dial indicator is connected with the concentrator through a data line, the concentrator is connected with a computer, the expansion and shrinkage changes of the test piece can be tested in real time, and an expansion and shrinkage curve is recorded.
(4) The invention can test the expansion and shrinkage effects of test pieces of different materials and sizes and can also test the expansion and shrinkage performances of test pieces of different materials and sizes, thereby having good academic value and test application prospect;
drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention in a schematic configuration;
FIG. 3 is a schematic top view of the structure of the present invention;
FIG. 4 is a front view of a placement device according to the present invention;
FIG. 5 is a schematic top view of the placement device of the present invention;
FIG. 6 is a schematic front view of the measurement system configuration of the present invention (excluding the hub and computer);
FIG. 7 is a schematic side view of the measurement system configuration of the present invention (excluding the hub and computer).
In the figure: 1-placing device 2-measuring system 3-slideway 4-placing platform 5-level bubble 6-stud 7-magnetic meter seat 8-primary rod 9-secondary rod 10-dial indicator or dial indicator 11-seat body 12-support tube 13-magnetic switch 14-slide block 15-liftable support seat
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, 2 and 3, the multi-specification multi-degree-of-freedom test piece expansion and contraction tester comprises a piece placing device 1 and a measuring system 2 installed on the piece placing device 1.
As shown in fig. 4 and 5, the placement device 1 includes a slideway 3, a placement platform 4, a liftable support 15 and a level bubble 5. The workpiece placing platform 4 is of a cross structure formed by welding rectangular pipes with the end face size of 100mm multiplied by 45mm multiplied by 1.5mm, and the length of each of 4 supporting legs is 500 mm. 4 slide 3 are fixed respectively in the upper surface of 4 landing legs, and the size of slide 3 is 310mm x 60mm x 3 mm.
The lifting support 15 is fixed below the 4 supporting legs, the lifting support 15 is composed of a base body 11 and a supporting tube 12, a stud 6 is arranged on the upper portion of the base body 11, one end of the supporting tube 12 is fixed below the supporting legs of the workpiece placing platform 4, an internal thread is arranged at the other end of the supporting tube, the supporting tube 12 and the base body 11 are screwed into the internal thread at the bottom of the supporting tube 12 through the stud 6, the height of the lifting support 15 is adjusted through the distance that the stud 6 is screwed into the supporting tube 12, and the.
The vial 5 has dimensions of 230mm x 40mm x 15mm and is secured to one side of the platform 4 at the vertical intersection of the legs.
As shown in fig. 6 and 7, the measuring system 2 includes a magnetometer package 7, a primary lever 8, a secondary lever 9, a dial indicator or dial gauge 10, a hub, and a computer.
The magnetic gauge stand 7 is a universal soft magnetic base stand, a magnetic switch 13 is arranged on the magnetic gauge stand 7, and the magnetic switch 13 is a rotary handle for generating magnetism and eliminating magnetism. The bottom of the magnetic gauge stand 7 is provided with a slide block 14 matched with the slide way, the slide block 14 is installed on the slide way 3, and the slide block 14 slides along the slide way 3.
The dial indicator or dial indicator 10 is an electronic dial indicator or dial indicator with the precision of 0.01mm or 0.001mm, a digital display dial indicator or dial indicator with the model number of Eee 12.7.7 is adopted, the dial indicator or dial indicator 10 is connected with the hub through a data line, the hub adopts a 4-way 5010-311a hub, and the hub is connected with a computer.
One end of the primary rod 8 is fixed on the magnetic gauge seat 7, the other end of the primary rod is hinged with the secondary rod 9 through a bolt or a knob, and the other end of the secondary rod 9 is hinged with the dial indicator or the dial indicator 10 through a bolt or a knob.
The magnetic gauge stand 7 is arranged on the slideway 3 and slides along the slideway 3, and the position of the dial indicator or the dial indicator 10 can be adjusted back and forth. The second-stage hinge structure enables the dial indicator or the dial indicator 10 to rotate at any angle, so that the expansion and contraction changes of different parts of the test piece can be tested, and the test is more comprehensive and accurate; the invention has strong applicability and is a universal instrument and equipment for testing the expansion and contraction of materials. The piece placing platform 4 is of a cross frame structure formed by welding profile steel, the expansion and shrinkage test range of the test piece is expanded, and the expansion and shrinkage test in multiple directions can reflect the material characteristics better. The dial indicator or dial indicator 10 is connected with the concentrator through a data line, the concentrator is connected with a computer, the expansion and shrinkage changes of the test piece can be tested in real time, and an expansion and shrinkage curve is recorded. The invention can test the expansion and shrinkage effects of test pieces of different materials and different sizes, and can also test the expansion and shrinkage performances of test pieces of different materials and different sizes, thereby having good academic value and test application prospect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234179.5A CN108844451B (en) | 2018-03-21 | 2018-03-21 | A multi-specification and multi-degree-of-freedom specimen expansion and contraction tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810234179.5A CN108844451B (en) | 2018-03-21 | 2018-03-21 | A multi-specification and multi-degree-of-freedom specimen expansion and contraction tester |
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| Publication Number | Publication Date |
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| CN108844451A CN108844451A (en) | 2018-11-20 |
| CN108844451B true CN108844451B (en) | 2021-05-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110345855B (en) * | 2019-08-06 | 2023-05-05 | 深圳市市政工程总公司 | Material shrinkage deformation test equipment of beam test piece |
| CN110470542B (en) * | 2019-09-12 | 2024-03-08 | 辽宁科技大学 | Durable loading device for load-holding reinforced concrete beam |
| CN117110590B (en) * | 2023-08-31 | 2024-04-26 | 力姆泰克（北京）传动设备股份有限公司 | Multi-degree-of-freedom testing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101344371A (en) * | 2008-08-26 | 2009-01-14 | 河海大学 | Measuring device and method for linear deformation of cement-based materials at early age |
| KR20120106190A (en) * | 2011-03-18 | 2012-09-26 | 한국건설생활환경시험연구원 | Device for meansuring the strain of substance to be measured |
| CN204116343U (en) * | 2014-09-22 | 2015-01-21 | 广西壮族自治区水利科学研究院 | Concrete for hydraulic structure contraction measuring device |
| CN204666086U (en) * | 2015-06-16 | 2015-09-23 | 浙江中烟工业有限责任公司 | A kind of cigarette bobbin paper end face flatness determinator |
| CN106680463B (en) * | 2017-01-19 | 2019-11-29 | 南京工程学院 | It is a kind of to change the true three-dimensional swell-shrink instrument for calculating soil sample swell-shrinking deformation amount by water volume |
| CN206638611U (en) * | 2017-03-27 | 2017-11-14 | 吉林建筑大学 | A kind of fast temperature contraction tester |
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