CN108195665A - For the extensometer of high temperature single shaft experiment - Google Patents
For the extensometer of high temperature single shaft experiment Download PDFInfo
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- CN108195665A CN108195665A CN201810229370.0A CN201810229370A CN108195665A CN 108195665 A CN108195665 A CN 108195665A CN 201810229370 A CN201810229370 A CN 201810229370A CN 108195665 A CN108195665 A CN 108195665A
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- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 8
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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
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Abstract
本发明涉及一种用于高温单轴实验的引伸计，其特征在于：上机身板与下机身板平行设置，在上机身板及下机身板的前端分别固定安装陶瓷顶针，在上机身板及下机身板的尾部分别对应固定安装上连接板及下连接板，在所述上连接板及下连接板之间垂直安装两连接弹簧片，在所述上连接板及下连接板之间水平安装应变弹簧片，所述应变弹簧片的前端通过弹簧支撑块连接下连接板，应变弹簧片的尾部通过U型槽连接至上连接板，所述上连接板及下连接板的两侧固定安装有侧板，所述上连接板及下连接板的尾部固定安装有外壳。本发明设计科学合理，结构布局紧凑，能够保证引伸计在高温条件下的正常使用，避免外界环境干扰，并确保引伸计的实验数据精确性。
The invention relates to an extensometer for high-temperature uniaxial experiments, which is characterized in that: an upper fuselage plate and a lower fuselage plate are arranged in parallel, and ceramic thimbles are fixedly installed on the front ends of the upper fuselage plate and the lower fuselage plate respectively. The tails of the upper fuselage plate and the lower fuselage plate are respectively fixedly installed with the upper connecting plate and the lower connecting plate, and two connecting spring pieces are vertically installed between the upper connecting plate and the lower connecting plate, and the upper connecting plate and the lower connecting plate are vertically installed. A strain spring piece is installed horizontally between the connecting plates, the front end of the strain spring piece is connected to the lower connecting plate through a spring support block, and the tail of the strain spring piece is connected to the upper connecting plate through a U-shaped groove, and the upper connecting plate and the lower connecting plate Side plates are fixedly installed on both sides, and the tails of the upper connecting plate and the lower connecting plate are fixedly installed with shells. The invention has scientific and reasonable design, compact structure and layout, can ensure the normal use of the extensometer under high temperature conditions, avoid external environmental interference, and ensure the accuracy of the extensometer's experimental data.
Description
技术领域technical field
本发明属于材料性能测试的试验技术领域，涉及引伸计，特别涉及一种用于高温单轴实验的引伸计。The invention belongs to the technical field of material performance testing, and relates to an extensometer, in particular to an extensometer used for high-temperature uniaxial experiments.
背景技术Background technique
引伸计是测量试样或其他物体两点之间线变形的一种试验仪器，其目的是测取材料在特定工况下的实际力学性能，其中高温便是常见的一种工况。普通引伸计的顶针无法承受较高的温度，同时在高温环境下引伸计的测量元件易受到温度影响，产生较大的误差。An extensometer is a test instrument for measuring the linear deformation between two points of a sample or other objects. Its purpose is to measure the actual mechanical properties of materials under specific working conditions, among which high temperature is a common working condition. The thimble of ordinary extensometers cannot withstand higher temperatures, and at the same time, the measuring elements of extensometers are easily affected by temperature in high temperature environments, resulting in large errors.
因此，希望有一种技术方案来实现在高温环境下对被测物体轴向方向的长度形变进行准确有效的测量。Therefore, it is desirable to have a technical solution to accurately and effectively measure the length deformation of the measured object in the axial direction in a high temperature environment.
通过对公开专利文献的检索，并未发现与本专利申请相同的公开专利文献。By searching the published patent documents, no published patent documents identical to the present patent application have been found.
发明内容Contents of the invention
本发明的目的在于克服现有技术的不足，提供一种用于高温单轴实验的引伸计，可以实现被测物体在高温条件下轴向方向的长度形变测量。The purpose of the present invention is to overcome the deficiencies of the prior art, and provide an extensometer for high-temperature uniaxial experiments, which can realize the measurement of the length deformation of the measured object in the axial direction under high-temperature conditions.
本发明解决其技术问题是通过以下技术方案实现的：The present invention solves its technical problem and realizes through the following technical solutions:
一种用于高温单轴实验的引伸计，其特征在于：包括上机身板、下机身板、陶瓷顶针、上连接板、下连接板、连接弹簧片及应变弹簧片，所述上机身板与下机身板平行设置，在上机身板及下机身板的前端分别固定安装陶瓷顶针，在上机身板及下机身板的尾部分别对应固定安装上连接板及下连接板，在所述上连接板及下连接板之间垂直安装两连接弹簧片，在所述上连接板及下连接板之间水平安装应变弹簧片，所述应变弹簧片的前端通过弹簧支撑块连接下连接板，应变弹簧片的尾部通过U型槽连接至上连接板，所述上连接板及下连接板的两侧固定安装有侧板，所述上连接板及下连接板的尾部固定安装有外壳。An extensometer for high-temperature uniaxial experiments, characterized in that it includes an upper fuselage plate, a lower fuselage plate, a ceramic thimble, an upper connecting plate, a lower connecting plate, connecting spring pieces and strain spring pieces, the upper machine The body board and the lower body board are arranged in parallel, ceramic thimbles are fixedly installed on the front ends of the upper body board and the lower body board respectively, and the upper connection board and the lower connection board are respectively fixedly installed on the tails of the upper body board and the lower body board. plate, two connecting spring pieces are vertically installed between the upper connecting plate and the lower connecting plate, and strain spring pieces are installed horizontally between the upper connecting plate and the lower connecting plate, and the front ends of the strain spring pieces pass through the spring support block Connect the lower connecting plate, the tail of the strain spring piece is connected to the upper connecting plate through a U-shaped groove, the two sides of the upper connecting plate and the lower connecting plate are fixedly installed with side plates, and the tails of the upper connecting plate and the lower connecting plate are fixedly installed There is a shell.
而且，所述陶瓷顶针卡装于上机身板、下机身板前端所制的半圆槽内，并通过挡板进行卡装固定。Moreover, the ceramic thimble is clamped in the semicircular grooves made at the front ends of the upper and lower fuselage plates, and is clamped and fixed through the baffle plate.
而且，所述挡板为劣弧桥形挡板。Moreover, the baffle is an inferior arc bridge-shaped baffle.
而且，所述应变弹簧片的尾部下表面设置有压紧块。Moreover, a pressing block is provided on the lower surface of the tail part of the strain spring piece.
而且，所述压紧块的左侧固定安装有防撞梁。Moreover, an anti-collision beam is fixedly installed on the left side of the pressing block.
而且，所述应变弹簧片的前端上表面设置有防撞块。Moreover, an anti-collision block is provided on the upper surface of the front end of the strain spring piece.
而且，所述上连接板的尾部后表面设置有棱槽，所述上连接板的尾部下表面设置有导线夹。Moreover, grooves are provided on the rear surface of the tail portion of the upper connecting plate, and wire clips are provided on the lower surface of the tail portion of the upper connecting plate.
而且，所述上连接板及下连接板的前端之间固定安装有L形后档温板。Moreover, an L-shaped rear temperature shield is fixedly installed between the front ends of the upper connecting plate and the lower connecting plate.
而且，所述上机身板及下机身的前端之间固定安装有双L形前档温板。Moreover, double L-shaped front temperature shields are fixedly installed between the upper fuselage plate and the front end of the lower fuselage.
而且，所述连接弹簧片的两端均设置有弹簧压块。Moreover, both ends of the connecting spring piece are provided with spring pressing blocks.
本发明的优点和有益效果为：Advantage of the present invention and beneficial effect are:
1、本发明用于高温单轴实验的引伸计，上机身板与下机身板平行设置，在上机身板及下机身板的前端分别固定安装陶瓷顶针，在上机身板及下机身板的尾部分别对应固定安装上连接板及下连接板，在上连接板及下连接板之间垂直安装两连接弹簧片，在上连接板及下连接板之间水平安装应变弹簧片，应变弹簧片的前端通过弹簧支撑块连接下连接板，应变弹簧片的尾部通过U型槽连接至上连接板，上连接板及下连接板的两侧固定安装有侧板，上连接板及下连接板的尾部固定安装有外壳，侧板和外壳可以对引伸计起到高温防护作用，保证引伸计在高温环境下的正常作业，保证应变弹簧片对试样轴向方向的长度形变测量的精确测量，确保测量效果。1. The present invention is used for the extensometer of high-temperature uniaxial experiment. The upper fuselage plate and the lower fuselage plate are arranged in parallel, and the front ends of the upper fuselage plate and the lower fuselage plate are respectively fixed with ceramic thimbles. The tail of the lower fuselage plate corresponds to the fixed installation of the upper connection plate and the lower connection plate, and two connection spring pieces are installed vertically between the upper connection plate and the lower connection plate, and the strain spring pieces are installed horizontally between the upper connection plate and the lower connection plate , the front end of the strain spring piece is connected to the lower connection plate through a spring support block, the tail of the strain spring piece is connected to the upper connection plate through a U-shaped groove, side plates are fixedly installed on both sides of the upper connection plate and the lower connection plate, the upper connection plate and the lower connection plate The tail of the connection plate is fixedly installed with a shell, the side plate and the shell can protect the extensometer from high temperature, ensure the normal operation of the extensometer in a high temperature environment, and ensure the accuracy of the strain spring piece in measuring the length and deformation of the sample in the axial direction Measure to ensure the measurement effect.
2、本发明用于高温单轴实验的引伸计，陶瓷顶针卡装于上机身板、下机身板前端所制的半圆槽内，并通过劣弧桥形挡板进行卡装固定，可将陶瓷顶针固定在机身板上，不发生环向和轴向的位移，使机身能将位移量准确地转递给连接板，从而引起应变片弹簧上应变片对变形量的精确采集。2. The extensometer used in the high-temperature uniaxial experiment of the present invention, the ceramic thimble is clamped in the semicircular groove made by the front end of the upper fuselage plate and the lower fuselage plate, and is clamped and fixed through the inferior arc bridge-shaped baffle plate, which can The ceramic thimble is fixed on the fuselage plate without circumferential and axial displacement, so that the fuselage can accurately transfer the displacement to the connecting plate, thereby causing the strain gauge on the strain gauge spring to accurately collect the deformation.
3、本发明用于高温单轴实验的引伸计，应变弹簧片的尾部下表面设置有压紧块，对应变弹簧片起到压紧作用，保证变形量的准确测量。3. In the extensometer used in high-temperature uniaxial experiments of the present invention, the lower surface of the tail of the strain spring piece is provided with a compression block, which acts as a compression force on the strain spring piece to ensure accurate measurement of deformation.
4、本发明用于高温单轴实验的引伸计，压紧块的左侧固定安装有防撞梁，应变弹簧片的前端上表面设置有防撞块，避免在拿取或实验操作中机身板发生过大位移而导致应变片损坏或塑性变形失效，保证数据准确性。4. For the extensometer used in high-temperature uniaxial experiments of the present invention, an anti-collision beam is fixedly installed on the left side of the pressing block, and an anti-collision block is arranged on the upper surface of the front end of the strain spring piece, so as to prevent the Excessive displacement of the plate causes damage to the strain gauge or failure of plastic deformation to ensure data accuracy.
5、本发明用于高温单轴实验的引伸计，上连接板的尾部后表面设置有棱槽，所述上连接板的尾部下表面设置有导线夹，应变弹簧片上贴制应变片，应变片通过导线连接至上位机，导线穿过棱槽并通过导线夹进行固定，避免在使用过程中，由于导线的晃动导致测量数值的波动，极大提高数据测量的稳定性。5. The present invention is used for the extensometer of the high-temperature uniaxial experiment, and the rear surface of the tail of the upper connecting plate is provided with grooves, and the lower surface of the tail of the upper connecting plate is provided with wire clamps, and the strain gauges and strain gauges are pasted on the strain springs. It is connected to the host computer through wires, and the wires pass through the grooves and are fixed by wire clips, which avoids fluctuations in measured values caused by shaking of wires during use, and greatly improves the stability of data measurement.
6、本发明用于高温单轴实验的引伸计，上连接板及下连接板的前端之间固定安装有L形后档温板，对上连接板及下连接至之间安装的连接弹簧片及应变弹簧片起到保护作用，防止高温作业时弹簧片测量出现误差，保证实验结果精确度。6. The extensometer used in the high-temperature uniaxial experiment of the present invention, an L-shaped rear temperature plate is fixedly installed between the front ends of the upper connecting plate and the lower connecting plate, and the connecting spring piece installed between the upper connecting plate and the lower connecting plate And the strain spring piece plays a protective role to prevent the measurement error of the spring piece during high temperature operation and ensure the accuracy of the experimental results.
7、本发明用于高温单轴实验的引伸计，上机身板及下机身的前端之间固定安装有双L形前档温板，起到高温防护保护，保证引伸计高温条件下的正常使用。7. The extensometer used in the high-temperature uniaxial experiment of the present invention has a double L-shaped front temperature plate fixedly installed between the upper fuselage plate and the front end of the lower fuselage, which serves as high-temperature protection and ensures the extensometer’s stability under high-temperature conditions. Normal use.
8、本发明用于高温单轴实验的引伸计，连接弹簧片的两端均设置有弹簧压块，对连接弹簧片起到压紧作用，保证其连接稳定性。8. In the extensometer used in high-temperature uniaxial experiments of the present invention, both ends of the connecting spring piece are provided with spring pressing blocks, which can compress the connecting spring piece to ensure its connection stability.
9、本发明设计科学合理，结构布局紧凑，能够保证引伸计在高温条件下的正常使用，避免外界环境干扰，并确保引伸计的实验数据精确性。9. The design of the present invention is scientific and reasonable, and the structural layout is compact, which can ensure the normal use of the extensometer under high temperature conditions, avoid external environmental interference, and ensure the accuracy of the extensometer's experimental data.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2为本发明的结构示意图(去掉外壳、侧板及各档温板)；Fig. 2 is a structural representation of the present invention (remove shell, side plate and each heat preservation plate);
图3为本发明的引伸计尾部放大图。Fig. 3 is an enlarged view of the tail of the extensometer of the present invention.
附图标记说明Explanation of reference signs
1-第二前档温板、2-劣弧桥形挡板、3-L形后档温板、4-上机身板、5-上连接板、6-弹簧压块、7-螺栓、8-侧板、9-连接弹簧片、10-外壳、11-下连接板、12-下机身板、13-第一前档温板、14-陶瓷顶针、15-防撞块、16-U型槽、17-应变弹簧片、18-导线夹、19-防撞梁、20-压紧块、21-弹簧支撑块、22-棱槽。1-Second front temperature plate, 2-Inferior arc bridge baffle, 3-L-shaped rear temperature plate, 4-Upper fuselage plate, 5-Upper connecting plate, 6-Spring pressure block, 7-Bolt, 8-side plate, 9-connecting spring piece, 10-shell, 11-lower connecting plate, 12-lower fuselage plate, 13-first front temperature plate, 14-ceramic thimble, 15-anti-collision block, 16- U-shaped groove, 17-strain spring piece, 18-wire clamp, 19-anti-collision beam, 20-press block, 21-spring support block, 22-groove.
具体实施方式Detailed ways
下面通过具体实施例对本发明作进一步详述，以下实施例只是描述性的，不是限定性的，不能以此限定本发明的保护范围。The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.
一种用于高温单轴实验的引伸计，其创新之处在于：包括上机身板4、下机身板12、陶瓷顶针14、上连接板5、下连接板11、连接弹簧片9及应变弹簧片17，上机身板与下机身板平行设置，在上机身板及下机身板的前端分别固定安装陶瓷顶针，在上机身板及下机身板的尾部分别对应固定安装上连接板及下连接板，在上连接板及下连接板之间垂直安装两连接弹簧片，在上连接板及下连接板之间水平安装应变弹簧片，应变弹簧片上贴制应变片，该应变片通过导线连接至上位机，应变弹簧片的前端通过弹簧支撑块21连接下连接板，应变弹簧片的尾部通过U型槽16连接至上连接板，上连接板及下连接板的两侧固定安装有侧板8，上连接板及下连接板的尾部通过螺栓7固定安装有外壳10，侧板和外壳可以对引伸计起到高温防护作用，保证引伸计在高温环境下的正常作业，保证应变弹簧片对试样轴向方向的长度形变测量的精确测量，确保测量效果。An extensometer for high-temperature uniaxial experiments, which is innovative in that it includes an upper fuselage plate 4, a lower fuselage plate 12, a ceramic thimble 14, an upper connecting plate 5, a lower connecting plate 11, a connecting spring piece 9 and Strain springs 17, the upper fuselage plate and the lower fuselage plate are arranged in parallel, ceramic thimbles are fixedly installed on the front ends of the upper fuselage plate and the lower fuselage plate respectively, and the tails of the upper fuselage plate and the lower fuselage plate are fixed respectively Install the upper connecting plate and the lower connecting plate, install two connecting spring pieces vertically between the upper connecting plate and the lower connecting plate, install the strain spring piece horizontally between the upper connecting plate and the lower connecting plate, and paste the strain gauge on the strain spring piece, The strain gauge is connected to the host computer through wires, the front end of the strain spring piece is connected to the lower connection plate through the spring support block 21, the tail of the strain spring piece is connected to the upper connection plate through the U-shaped groove 16, and the two sides of the upper connection plate and the lower connection plate The side plate 8 is fixedly installed, and the tail of the upper connecting plate and the lower connecting plate is fixedly installed with a shell 10 by bolts 7. The side plate and the shell can protect the extensometer from high temperature and ensure the normal operation of the extensometer in a high temperature environment. Guarantee the accurate measurement of the length deformation measurement of the strain spring piece in the axial direction of the sample, and ensure the measurement effect.
陶瓷顶针卡装于上机身板、下机身板前端所制的半圆槽内，并通过劣弧桥形挡板2进行卡装固定，可将陶瓷顶针固定在机身板上，不发生环向和轴向的位移，使机身能将位移量准确地转递给连接板，从而引起应变片弹簧上应变片对变形量的精确采集。The ceramic thimble is clamped in the semicircular groove made at the front end of the upper fuselage plate and the lower fuselage plate, and is clamped and fixed through the inferior arc bridge baffle 2, so that the ceramic thimble can be fixed on the fuselage plate without ringing The displacement in the direction and axial direction enables the fuselage to accurately transfer the displacement to the connecting plate, thereby causing the strain gauge on the strain gauge spring to accurately collect the deformation.
应变弹簧片的尾部下表面设置有压紧块20，对应变弹簧片起到压紧作用，保证变形量的准确测量。A compression block 20 is arranged on the lower surface of the tail of the strain spring sheet, which acts as a compression on the strain spring sheet to ensure accurate measurement of deformation.
压紧块的左侧固定安装有防撞梁19，应变弹簧片的前端上表面设置有防撞块15，避免在拿取或实验操作中机身板发生过大位移而导致应变片损坏或塑性变形失效，保证数据准确性。An anti-collision beam 19 is fixedly installed on the left side of the pressing block, and an anti-collision block 15 is arranged on the upper surface of the front end of the strain spring plate, so as to avoid excessive displacement of the fuselage plate during taking or experimental operation and cause damage or plastic deformation of the strain plate. Deformation failure to ensure data accuracy.
上连接板的尾部后表面设置有棱槽22，上连接板的尾部下表面设置有导线夹18，应变弹簧片上贴制应变片，应变片通过导线连接至上位机，导线穿过棱槽并通过导线夹进行固定，避免在使用过程中，由于导线的晃动导致测量数值的波动，极大提高数据测量的稳定性。The rear surface of the tail of the upper connecting plate is provided with a groove 22, the lower surface of the tail of the upper connecting plate is provided with a wire clip 18, and the strain gauge is pasted on the strain spring piece, and the strain gauge is connected to the host computer through a wire, and the wire passes through the groove and passes through The wire clamp is fixed to avoid the fluctuation of the measured value due to the shaking of the wire during use, which greatly improves the stability of data measurement.
上连接板及下连接板的前端之间固定安装有L形后档温板3，对上连接板及下连接至之间安装的连接弹簧片及应变弹簧片起到保护作用，防止高温作业时弹簧片测量出现误差，保证实验结果精确度。An L-shaped rear temperature plate 3 is fixedly installed between the front ends of the upper connecting plate and the lower connecting plate, which protects the connecting spring pieces and strain spring pieces installed between the upper connecting plate and the lower connecting plate to prevent the There is an error in the measurement of the spring sheet to ensure the accuracy of the experimental results.
上机身板及下机身的前端之间固定安装有双L形前档温板，双L形前档温板包括向外弯折的第一前档温板13及向内弯折的第二前档温板1，起到高温防护保护，保证引伸计高温条件下的正常使用。Between the front end of the upper fuselage plate and the lower fuselage, double L-shaped front temperature plates are fixedly installed, and the double L-shaped front temperature plates include the first front temperature plate 13 bent outward and the first front temperature plate 13 bent inward. The second front temperature plate 1 serves as high temperature protection to ensure the normal use of the extensometer under high temperature conditions.
连接弹簧片的两端均设置有弹簧压块6，对连接弹簧片起到压紧作用，保证其连接稳定性。Both ends of the connecting spring piece are provided with spring pressing blocks 6, which play a role in pressing the connecting spring piece to ensure its connection stability.
工作时，实验机施加外部力，使试样发生轴向形变，继而引伸计的两陶瓷顶针与试样接触点间的距离发生变化，由于陶瓷顶针与机身及连接板相对固定，顶针的位移会带动连接板和机身的位移，继而使连接弹簧片和应变弹簧片发生形变，黏贴于应变弹簧片上的应变片随之形变，应变片的电阻发生相应变化，相应的电信号通过引出导线传递到上位机，完成测量工作。When working, the testing machine applies an external force to cause axial deformation of the sample, and then the distance between the two ceramic thimbles of the extensometer and the contact point of the sample changes. Since the ceramic thimble is relatively fixed to the fuselage and the connecting plate, the displacement of the thimble It will drive the displacement of the connecting plate and the fuselage, and then deform the connecting spring piece and the strain spring piece, the strain gauge pasted on the strain spring piece will deform accordingly, the resistance of the strain gauge will change accordingly, and the corresponding electrical signal will pass through the lead wire Pass it to the host computer to complete the measurement work.
尽管为说明目的公开的本发明的实施例和附图，但是本领域的技术人员可以理解，在不脱离本发明及所附权利要求的精神和范围内，各种替换、变化和修改都是可能的，因此本发明的范围不局限于实施例和附图所公开的内容。Although the embodiments and accompanying drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various alternatives, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.
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| US4251918A (en) * | 1979-12-03 | 1981-02-24 | Duggan Michael F | Extensometer |
| CN1587970A (en) * | 2004-09-27 | 2005-03-02 | 天津大学 | High frequency responding high temperature drawing-twisting fatigue extender |
| CN1587971A (en) * | 2004-09-27 | 2005-03-02 | 天津大学 | High frequency responding high temperature single shaft fatigue extender |
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