JPH01244333A - Apparatus for detecting composite displacement of pulling pressure and torsion - Google Patents
Apparatus for detecting composite displacement of pulling pressure and torsionInfo
- Publication number
- JPH01244333A JPH01244333A JP7223588A JP7223588A JPH01244333A JP H01244333 A JPH01244333 A JP H01244333A JP 7223588 A JP7223588 A JP 7223588A JP 7223588 A JP7223588 A JP 7223588A JP H01244333 A JPH01244333 A JP H01244333A
- Authority
- JP
- Japan
- Prior art keywords
- displacement
- annular
- torsional
- axial
- leaf spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 70
- 239000002131 composite material Substances 0.000 title 1
- 238000001514 detection method Methods 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000510678 Falcaria vulgaris Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000001577 neostriatum Anatomy 0.000 description 1
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【発明の詳細な説明】
A、産業上の利用分野
本発明は、引張りと捩り、あるいは圧縮と捩りを供試体
に同時に負荷する試験(以下、引圧・捩り複合試験と呼
ぶ)に用いる引圧・捩り複合変位検出器に関するもので
ある。[Detailed Description of the Invention] A. Industrial Field of Application The present invention is directed to a suction pressure tester used in a test in which tension and torsion, or compression and torsion are simultaneously applied to a specimen (hereinafter referred to as a combined suction/torsion test).・Related to torsional compound displacement detector.
B、従来の技術
引圧・捩り複合試験は、供試体レト引張り荷重などの軸
方向荷重を与えると同時に、ねじり方向荷重を与えて複
合応力強度を測定する試験であり、このような試験にお
いては、供試体の標点間の軸方向変位量とねじり方向変
位量をそれぞれ高精度に取り出す必要がある。B. Conventional technology The combined tension/torsion test is a test in which the test specimen is subjected to an axial load such as a retro-tensile load, and at the same time a load in the torsional direction is applied to measure the combined stress strength. , it is necessary to extract the axial displacement amount and torsional direction displacement amount between the gauge points of the specimen with high precision.
従来においては、供試体の標点に上下一対で取付けた固
定リングの一方に、供試体軸に直交する面内に配置した
板ばねと、供試体軸と平行な面内に配置した板ばねとを
設け、両板ばねに歪ゲージを設けることにより、前者を
軸方向変位検出手段、後者を捩り方向変位検出手段とし
て、例えば軸方向変位検出手段であれば、ねじり方向変
位を吸収できるように板ばね先端と他方のリングをすべ
り接触で接続し、これにより軸方向変位とねじり方面変
位をそれぞれ独立して取り出せるようにしたものが提案
されている(実開昭59−120407号)。Conventionally, a pair of upper and lower fixing rings were attached to the gauge points of the specimen, and one leaf spring was placed on one side in a plane perpendicular to the axis of the specimen, and the other was placed in a plane parallel to the axis of the specimen. By providing strain gauges on both leaf springs, the former can be used as an axial displacement detection means, and the latter can be used as a torsional displacement detection means. It has been proposed that the tip of the spring and the other ring are connected by sliding contact so that axial displacement and torsional displacement can be taken out independently (Utility Model Application No. 59-120407).
また、ひずみゲージ、板ばねに代えて差動トランスを用
いるものもある。Also, there are some that use a differential transformer instead of strain gauges and leaf springs.
C0発明が解決しようとする問題点
しかしながら、従来の検出方法では、短い板ばねを直接
変形させ、あるいはストロークの限られた差動トランス
で検出しているため、測定範囲が限定され、例えば軸変
位で1〜2mm、捩れ角で1〜3degであり、F R
P (F 1ber Re1nforcedP 1as
tic)のように軸変位、捩り変位の大きい供試体には
適用できないという問題があった。また、その機構も複
雑であり、検出器が大型化して重くなり、更に取扱が煩
雑であった。C0 Problems to be Solved by the Invention However, conventional detection methods directly deform a short leaf spring or detect using a differential transformer with a limited stroke, which limits the measurement range, such as axial displacement. is 1 to 2 mm, the twist angle is 1 to 3 degrees, and F R
P (F 1ber Re1nforcedP 1as
There was a problem in that it could not be applied to specimens with large axial displacements and torsional displacements, such as those in the case of tic). In addition, the mechanism is complicated, the detector is large and heavy, and handling is complicated.
本発明は、このような問題点を解消すべくなされたもの
で、その目的は、測定範囲が大きく精度の良い引圧・捩
り複合変位検出器を提供することにある。The present invention has been made to solve these problems, and its purpose is to provide a suction/torsion combined displacement detector with a wide measurement range and high accuracy.
D0問題点を解決するための手段
本発明に係る引圧・捩り複合変位検出器は、供試体の軸
方向に所定間隔をおいて装着され互いに対向配置された
一対の環状固定具と、一対の環状固定具にそれぞれ設け
られ、両環状固定具の相対軸方向変位を検出する軸方向
変位検出手段と、−端が一方の環状固定具に固定され他
′端が他方の環状固定具まで延設されその平面が該他方
の環状固定具の接線方向と直交する板ばね、および一端
が他方の環状固定具に巻回され他端が板ばねの他端部に
おいて平面に直交接続されたー柔軟性の線条体を有し、
両環状固定具の相対角度変位に応じた板ばねの撓み量を
検出するねじり方向変位検出手段とを具備することによ
り上述の問題点を解決する。Means for Solving the D0 Problem The combined suction/torsion displacement detector according to the present invention includes a pair of annular fixtures that are mounted at a predetermined interval in the axial direction of a specimen and are arranged opposite to each other, and a pair of axial displacement detection means provided on each of the annular fixtures to detect relative axial displacement of both annular fixtures; a leaf spring whose plane is perpendicular to the tangential direction of the other annular fixture, and whose one end is wound around the other annular fixture and whose other end is orthogonally connected to the plane at the other end of the leaf spring; It has a striatum of
The above problem is solved by providing a torsional displacement detection means for detecting the amount of deflection of the leaf spring in accordance with the relative angular displacement of both annular fixtures.
E1作用
供試体が軸方向に変位すると、環状固定具が軸方向に相
対変位し、この変位が軸方向変位検出手段で検出される
。軸方向変位検出手段は非接触式であり、供試体の捩れ
により両環状固定具が相対的に角度変位しても何の支障
もなく測定可能であり、また、軸方向変位量が大きくて
も測定可能である。一方、それと同時に供試体が撮れる
と、両環状固定具が捩れ方向に相対角度変位し、板ばね
が撓む。供試体の軸方向変位により線条体は環状固定具
の巻回し部で軸方向に変位し、軸方向の両環状固定具の
相対変位が吸収される。この撓み量をひずみゲージなど
で測定すれば供試体の捩れ角や捩れ方向が検出できる。When the E1 effect specimen is displaced in the axial direction, the annular fixture is relatively displaced in the axial direction, and this displacement is detected by the axial displacement detection means. The axial displacement detection means is a non-contact type, and can be measured without any problem even if the two annular fixtures are relatively angularly displaced due to twisting of the specimen, and even if the amount of axial displacement is large. Measurable. On the other hand, when the specimen is photographed at the same time, both annular fixtures undergo a relative angular displacement in the torsional direction, causing the leaf spring to bend. Due to the axial displacement of the specimen, the filament is axially displaced at the winding portion of the annular fixture, and the relative displacement of both annular fixtures in the axial direction is absorbed. By measuring this amount of deflection with a strain gauge or the like, the twist angle and twist direction of the specimen can be detected.
板ばねの撓みを光学式センサなとで検出することもでき
る。It is also possible to detect the deflection of the leaf spring using an optical sensor.
F、実施例
以下、この発明を図示する一実施例に基づいて説明する
。F. Example The present invention will be described below based on an illustrative example.
第1図に示すように、供試体TPの軸方向に所定間隔を
おいて上下一対の環状固定具1および2を対向配置し、
上部環状固定具1の下方に環状取付平板3を介して光学
式変位計4を設け、下部の環状固定具2の上方に軸変位
検出環状平板5を設け、光学式変位計4と軸変位検出環
状平板5で軸方向変位を検出する。また、環状固定具1
および2を捩り方向変位検出機構6で接続し、捩り方向
変位を検出する。As shown in FIG. 1, a pair of upper and lower annular fixtures 1 and 2 are arranged facing each other at a predetermined interval in the axial direction of the specimen TP,
An optical displacement meter 4 is provided below the upper annular fixture 1 via an annular mounting flat plate 3, and an axial displacement detection annular flat plate 5 is provided above the lower annular fixture 2 to detect the optical displacement meter 4 and axial displacement. An annular flat plate 5 detects axial displacement. In addition, the annular fixture 1
and 2 are connected by a torsional displacement detection mechanism 6 to detect displacement in the torsional direction.
環状固定具1,2は、供試体TP軸方向に突出する係止
片IA、2Aを有し、この係止片IA。The annular fixtures 1 and 2 have locking pieces IA and 2A that protrude in the axial direction of the specimen TP, and the locking pieces IA.
2Aに螺合する取付ねじ7により標点に取付けられる。It is attached to the gage point by a mounting screw 7 screwed into 2A.
環状取付平板3および軸変位検出環状平板5は接続部材
21を介して環状固定具1,2に平行に取付けられる。The annular mounting flat plate 3 and the axial displacement detection annular flat plate 5 are attached in parallel to the annular fixtures 1 and 2 via the connecting member 21.
光学式変位計4は環状取付平板3に複数(例えば180
度ピッチで2個)設けられ、軸変位検出環状平板5の上
面は研摩等で鏡面仕上げ等がなされ、反射を良くするよ
うにされている。光学式変位計4は発光素子と受光素子
とを有し、発光素子からの光を環状平板5で反射させそ
の反射光を受光素子で検出し、受光位置の変化に基づい
て軸方向変位を検出するものであり、これを複数設けて
平均値をとれば、平板3,5間の平行度がずれていても
それを補正できる。A plurality of optical displacement meters 4 (for example, 180
The upper surface of the axial displacement detecting annular flat plate 5 is polished to a mirror finish to improve reflection. The optical displacement meter 4 has a light emitting element and a light receiving element, the light from the light emitting element is reflected by an annular flat plate 5, the reflected light is detected by the light receiving element, and the axial displacement is detected based on the change in the light receiving position. By providing a plurality of these and taking the average value, even if the parallelism between the flat plates 3 and 5 deviates, it can be corrected.
なお、平板3,5を省略し、光学的変位計4を環状固定
具1に取付け、環状固定具2を軸変位検出環状平板とし
てもよい。また、光学的変位計に限らず、静電容量型な
どの非接触式変位計でもよい。Note that the flat plates 3 and 5 may be omitted, the optical displacement meter 4 may be attached to the annular fixture 1, and the annular fixture 2 may be an annular flat plate for detecting axial displacement. Furthermore, the displacement meter is not limited to an optical displacement meter, and may be a non-contact type displacement meter such as a capacitance type.
捩り方向変位検出機構6は、取付アーム8、捩れ感知用
板ばね9、ワイヤ(柔軟性のある線条体)10、ひずみ
ゲージ11からなり、ワイヤ1oにより軸方向変位を吸
収し得るフレキシブルな構造となっている。The torsional displacement detection mechanism 6 includes a mounting arm 8, a torsion sensing plate spring 9, a wire (flexible filament) 10, and a strain gauge 11, and has a flexible structure capable of absorbing axial displacement by a wire 1o. It becomes.
取付アーム8は環状固定具1に水平方向に突設され、先
端に板ばね9が垂設される。板ばね9は環状固定具2ま
で延在し得る長尺のものであり、はぼ中央部にひずみゲ
ージ11が貼設される。ワイヤ10は基端が環状固定具
2に固定され、環状固定具2に若干巻回して先端を板ば
ね9の下端に固定する。また、板ばね9は、その平面が
環状固定具1の接線方向すなわちワイヤ10の直線部分
と直交するように取付アーム8に取付けられる。The mounting arm 8 is horizontally projecting from the annular fixture 1, and has a leaf spring 9 hanging from its tip. The leaf spring 9 is long enough to extend to the annular fixture 2, and a strain gauge 11 is attached to the center of the leaf spring. The base end of the wire 10 is fixed to the annular fixture 2, and the wire 10 is slightly wound around the annular fixture 2, and the tip end is fixed to the lower end of the leaf spring 9. Further, the leaf spring 9 is attached to the attachment arm 8 so that its plane is perpendicular to the tangential direction of the annular fixture 1, that is, the straight line portion of the wire 10.
環状固定具2に設けられるワイヤ10の巻回部分には、
供試体TPの軸変位に相当する幅を有する溝12を設け
ておき、軸方向変位に対してワイヤ10が軸方向に移動
し、ワイヤ10と板ばね9とを常に直交させて検出精度
が上がるようにする。The winding portion of the wire 10 provided on the annular fixture 2 includes:
A groove 12 having a width corresponding to the axial displacement of the specimen TP is provided, the wire 10 moves in the axial direction in response to the axial displacement, and the wire 10 and the leaf spring 9 are always perpendicular to each other to improve detection accuracy. Do it like this.
さらに、正逆方向の捩りを検出できるように、試験開始
前のセット状態で板ばね9を撓ませておく。Furthermore, the leaf spring 9 is bent in the set state before starting the test so that torsion in the forward and reverse directions can be detected.
この時のひずみゲージ11の出力を捩り角が零として校
正し、ひずみゲージ11の出力の増減で捩り角および捩
り方向が検出される。The output of the strain gauge 11 at this time is calibrated with the twist angle being zero, and the twist angle and twist direction are detected by increasing or decreasing the output of the strain gauge 11.
以上のような状態で、供試体TPに軸方向荷重と捩り方
向荷重を与えると、非接触式の光学的変位計4により軸
方向変位のみが検出される。非接触式であるため、測定
範囲を大きくできる。捩り方向変位検出機構6では、フ
レシキブルなワイヤ10と溝12により軸方向変位が吸
収され、環状固定具1,2の相対回転角度に応じた板ば
ね9の歪量がひずみゲージ11がら電気信号として出方
され、捩り方向変位のみが検出される。ワイヤ10と長
尺の板ばね9により測定範囲を大きくできる。ワイヤの
代りに柔軟性ある他の線条体を用いてもよい。When an axial load and a torsional load are applied to the specimen TP in the above state, only the axial displacement is detected by the non-contact optical displacement meter 4. Since it is a non-contact type, the measurement range can be expanded. In the torsional displacement detection mechanism 6, the axial displacement is absorbed by the flexible wire 10 and the groove 12, and the amount of strain in the leaf spring 9 corresponding to the relative rotation angle of the annular fixtures 1 and 2 is detected as an electrical signal by the strain gauge 11. and only the displacement in the torsional direction is detected. The measurement range can be increased by using the wire 10 and the long leaf spring 9. Other flexible filaments may be used instead of wires.
なお、捩り方向変位は、前述の構造に限らず。Note that the torsional displacement is not limited to the above-mentioned structure.
2枚の格子を用いたモアレ干渉縞によって光学的に非接
触で検出してもよい。また、平板5の表面に小さなピッ
チのコードを印刷し、光学式検出器でカウントするエン
コーダ方式でもよい。さらに、抵抗線と接触子による抵
抗変化を検出するポテンショメータ方式でもよい。この
場合、接触子は上下の平行平板3,5間に延在し軸方向
に長いものとなる。Optical non-contact detection may be performed using moiré interference fringes using two gratings. Alternatively, an encoder method may be used in which a small pitch code is printed on the surface of the flat plate 5 and counted by an optical detector. Furthermore, a potentiometer system that detects resistance changes due to resistance wires and contacts may be used. In this case, the contact extends between the upper and lower parallel flat plates 3 and 5 and becomes long in the axial direction.
G0発明の効果
本発明は以上のように構成したから、FRPなどのよう
に変位量の大きい軸方向変位と捩り方向変位をそれぞれ
精度良く検出できる。また、機構が簡素化され、検出器
の小型軽量化に寄与するとともに、取扱も簡単である。G0 Effects of the Invention Since the present invention is configured as described above, it is possible to accurately detect axial displacement and torsional displacement, which have a large amount of displacement, such as in FRP. Furthermore, the mechanism is simplified, contributing to the reduction in size and weight of the detector, and it is also easy to handle.
第1図、第2図、第3図、第4図は本発明の一実施例を
示すそれぞれ縦断面図、正面図、横断面図、斜視図であ
る。
1.2:環状固定具 4:光学式変位計5:軸変位検
出環状平板
6:捩り方向変位検出機構
9:板ばね 10:ワイヤ
11:ひずみゲージ
特許出願人 株式会社島津製作所
代理人弁理士 永 井 冬 紀FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are a longitudinal sectional view, a front view, a transverse sectional view, and a perspective view, respectively, showing an embodiment of the present invention. 1.2: Annular fixture 4: Optical displacement meter 5: Axial displacement detection annular flat plate 6: Torsional displacement detection mechanism 9: Leaf spring 10: Wire 11: Strain gauge Patent applicant Shimadzu Corporation Patent attorney Eiji Fuyuki I
Claims (1)
配置された一対の環状固定具と、前記一対の環状固定具
にそれぞれ設けられ、両環状固定具の相対軸方向変位を
検出する軸方向変位検出手段と、 一端が前記一方の環状固定具に固定され他端が前記他方
の環状固定具まで延設されその平面が該他方の環状固定
具の接線方向と直交する板ばね、および一端が前記他方
の環状固定具に巻回され他端が前記板ばねの他端部にお
いて前記平面に直交接続された柔軟性の線条体を有し、
前記両環状固定具の相対角度変位に応じた板ばねの撓み
量を検出するねじり方向変位検出手段とを具備すること
を特徴とする引圧・捩り複合変位検出器。[Scope of Claims] A pair of annular fixtures installed at a predetermined interval in the axial direction of the specimen and arranged to face each other; axial displacement detection means for detecting displacement; one end fixed to the one annular fixture, the other end extending to the other annular fixture, the plane of which is perpendicular to the tangential direction of the other annular fixture; a leaf spring; and a flexible filament whose one end is wound around the other annular fixture and whose other end is orthogonally connected to the plane at the other end of the leaf spring;
A combined suction/torsion displacement detector comprising: torsional displacement detection means for detecting the amount of deflection of the leaf spring according to the relative angular displacement of both the annular fixtures.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7223588A JPH0726903B2 (en) | 1988-03-25 | 1988-03-25 | Compound pressure / torsion displacement detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7223588A JPH0726903B2 (en) | 1988-03-25 | 1988-03-25 | Compound pressure / torsion displacement detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01244333A true JPH01244333A (en) | 1989-09-28 |
JPH0726903B2 JPH0726903B2 (en) | 1995-03-29 |
Family
ID=13483419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7223588A Expired - Fee Related JPH0726903B2 (en) | 1988-03-25 | 1988-03-25 | Compound pressure / torsion displacement detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0726903B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105651241A (en) * | 2016-03-24 | 2016-06-08 | 北新集团建材股份有限公司 | Experimental method and device for quickly measuring damp deflection of panel |
CN110196009A (en) * | 2019-06-21 | 2019-09-03 | 桂林电子科技大学 | A kind of measurement of wiring board solder joint bending Stress displacement and positioning auxiliary device |
KR102568185B1 (en) * | 2023-02-17 | 2023-08-17 | 한전케이피에스 주식회사 | Gas turbine Inlet Bleed Heater piping support device |
-
1988
- 1988-03-25 JP JP7223588A patent/JPH0726903B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105651241A (en) * | 2016-03-24 | 2016-06-08 | 北新集团建材股份有限公司 | Experimental method and device for quickly measuring damp deflection of panel |
CN110196009A (en) * | 2019-06-21 | 2019-09-03 | 桂林电子科技大学 | A kind of measurement of wiring board solder joint bending Stress displacement and positioning auxiliary device |
CN110196009B (en) * | 2019-06-21 | 2024-03-12 | 桂林电子科技大学 | Circuit board welding spot bending torsion stress displacement measurement and positioning auxiliary device |
KR102568185B1 (en) * | 2023-02-17 | 2023-08-17 | 한전케이피에스 주식회사 | Gas turbine Inlet Bleed Heater piping support device |
Also Published As
Publication number | Publication date |
---|---|
JPH0726903B2 (en) | 1995-03-29 |
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