JPH0248047B2 - ROODOSERU - Google Patents
ROODOSERUInfo
- Publication number
- JPH0248047B2 JPH0248047B2 JP10013582A JP10013582A JPH0248047B2 JP H0248047 B2 JPH0248047 B2 JP H0248047B2 JP 10013582 A JP10013582 A JP 10013582A JP 10013582 A JP10013582 A JP 10013582A JP H0248047 B2 JPH0248047 B2 JP H0248047B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- opening
- main body
- load cell
- cylindrical
- 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.)
- Expired - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 210000004027 cell Anatomy 0.000 description 25
- 238000001816 cooling Methods 0.000 description 4
- 210000005056 cell body Anatomy 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
Description
【発明の詳細な説明】
本発明は試験片が高圧高温などの雰囲気にさら
されている場合の試験片に加わる負荷重を測定す
るためのロードセルの改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a load cell for measuring the load applied to a test piece when the test piece is exposed to an atmosphere of high pressure and high temperature.
高温高圧の腐蝕性雰囲気などの特殊雰囲気中に
ある試験片の負荷重を、歪ゲージを具えたロード
セルで検出する場合、高温腐蝕雰囲気に耐える適
当な歪ゲージがないこと、ロードセルをそのよう
な特殊雰囲気中に入れると、雰囲気の圧力に比較
して負荷重が小さい場合、荷重検出精度が低下す
るおそれがあること、並びに、ロードセルを雰囲
気外の常温大気中に取り出すと、雰囲気圧力シー
ルによる摩擦のため、荷重検出精度が低下した
り、サーボ機構によりクローズドループ制御が困
難であるなどの問題点がある。本発明はこのよう
な問題点を解決するための改良されたロードセル
を提供するものである。 When using a load cell equipped with a strain gauge to detect the load on a test piece in a special atmosphere such as a high-temperature, high-pressure corrosive atmosphere, it is important to note that there is no suitable strain gauge that can withstand the high-temperature and corrosive atmosphere. If the load cell is placed in an atmosphere, the load detection accuracy may decrease if the load weight is small compared to the pressure of the atmosphere, and if the load cell is taken out into the room temperature air outside the atmosphere, friction due to the atmospheric pressure seal may occur. Therefore, there are problems such as reduced load detection accuracy and difficulty in closed-loop control due to the servo mechanism. The present invention provides an improved load cell to solve these problems.
本発明のロードセルは、一端が開口し、他端が
封閉されている筒状の本体の開口端を、前記筒状
の本体の開口と連通する開口を有する支持フレー
ムに固定支持させ、前記筒状の本体の外周側面に
歪ゲージを取り付けるとともに、前記筒状の本体
の封閉端の内底に試験荷重が伝達される負荷ロツ
ドの一端を連結し、前記負荷ロツドの他端は前記
筒状の本体の開口及び前記支持フレームの開口を
貫通して、特殊雰囲気の試験片収容室内に伸びて
いることを特徴とするものである。 In the load cell of the present invention, the open end of a cylindrical main body having one end open and the other end sealed is fixedly supported by a support frame having an opening communicating with the opening of the cylindrical main body, and the cylindrical body A strain gauge is attached to the outer peripheral side of the cylindrical body, and one end of a load rod through which the test load is transmitted is connected to the inner bottom of the closed end of the cylindrical body, and the other end of the load rod is connected to the inner bottom of the closed end of the cylindrical body. and the opening of the support frame, and extends into a test specimen storage chamber in a special atmosphere.
本発明によれば、歪ゲージが円筒状のロードセ
ル本体の外周側面に取り付けられており、試験片
が収容される特殊雰囲気からは完全に遮断されて
いるので、歪ゲージなどは常温大気中用のものを
利用でき、試験片が腐蝕雰囲気中にある場合にも
長期間に亘り歪ゲージが腐蝕の影響を受けること
がなく、寿命が大幅に伸び、長時間の疲労試験に
も適する特徴を有する。又、本発明では特殊雰囲
気中にある試験片に加わる負荷重の反力を検出す
るに際し、負荷ロツドを介して試験実荷重を直接
検出できるので、試験片の負荷重が精度よく検出
可能であるという特徴を有する。 According to the present invention, the strain gauge is attached to the outer peripheral side of the cylindrical load cell body, and is completely isolated from the special atmosphere in which the test piece is housed. Even if the test piece is in a corrosive atmosphere, the strain gauge will not be affected by corrosion for a long period of time, greatly extending its life and making it suitable for long-term fatigue tests. Furthermore, in the present invention, when detecting the reaction force of the load applied to a test piece in a special atmosphere, the actual test load can be directly detected via the load rod, so the load on the test piece can be detected with high accuracy. It has the following characteristics.
以下、本発明の実施例を図面を参照して説明す
る。図において、試験片１は高温高圧などの特殊
雰囲気の試験片収容室２内に収容される。試験片
収容室２は図示の実施例では周壁３と頂壁４及び
底壁５からなるハウジング６として形成される。
試験片１の両端はそれぞれ負荷ロツド７，８に連
結され、負荷ロツド７はハウジング６の底壁５を
貫通してハウジングの外部に伸び、引張荷重ある
いは圧縮荷重などを適用する負荷機構に連結され
る。ハウジング６の底壁５に設けられた負荷ロツ
ド７、取出し用の開口９は、適当な封閉シール部
材１０によつて気密にシールされる。１１，１２
はシール材を示す。 Embodiments of the present invention will be described below with reference to the drawings. In the figure, a test piece 1 is housed in a test piece storage chamber 2 in a special atmosphere such as high temperature and high pressure. In the illustrated embodiment, the test specimen receiving chamber 2 is formed as a housing 6 consisting of a peripheral wall 3, a top wall 4, and a bottom wall 5.
Both ends of the test specimen 1 are connected to load rods 7 and 8, respectively, which extend through the bottom wall 5 of the housing 6 to the outside of the housing and are connected to a load mechanism for applying a tensile load, a compressive load, etc. Ru. The load rod 7 and the removal opening 9 provided in the bottom wall 5 of the housing 6 are hermetically sealed by a suitable sealing member 10. 11,12
indicates sealing material.
さて本発明のロードセル１３は一端（図で底
端）が開口し、他端（図で頂端）が封開されてい
る筒状の本体１４の外周壁に複数の歪ゲージ１５
を貼り付けたもので、本体１４の開口端１６は前
述したハウジング６の頂壁４の外表面に固定支持
される。ハウジング６の頂壁４には、ロードセル
本体１４の開口端１６における開口１７と連通す
る開口１８が設けられており、試験片の他端に連
結された負荷ロツド８がこれらの開口１８，１７
を貫通してロードセル本体１４内に伸び、その先
端がロードセル本体１４の内底１９に連結されて
いる。したがつてロードセル１３は全体としてハ
ウジング６の頂壁４に形成される開口１８を封閉
する形状を具えているものである。ロードセル１
３とハウジング６の頂壁４との間には、適当なシ
ール材２０が施こされ、これによつてハウジング
６の頂壁４の開口は気密にシール封閉されること
になる。 Now, the load cell 13 of the present invention has a plurality of strain gauges 15 on the outer peripheral wall of a cylindrical main body 14 that is open at one end (bottom end in the figure) and sealed at the other end (top end in the figure).
The opening end 16 of the main body 14 is fixedly supported on the outer surface of the top wall 4 of the housing 6 described above. The top wall 4 of the housing 6 is provided with an opening 18 that communicates with the opening 17 at the open end 16 of the load cell body 14, and the load rod 8 connected to the other end of the test piece is connected to these openings 18, 17.
It extends into the load cell main body 14 by penetrating through it, and its tip is connected to the inner bottom 19 of the load cell main body 14 . Therefore, the load cell 13 as a whole has a shape that closes the opening 18 formed in the top wall 4 of the housing 6. Load cell 1
3 and the top wall 4 of the housing 6, a suitable sealing material 20 is applied, whereby the opening in the top wall 4 of the housing 6 is hermetically sealed.
ロードセル１３はその全体をカバー部材２１で
被包することができる。カバー部材２１はまた、
シール材２２を介してハウジング６の頂壁４の外
表面に固着され、これによつてロードセル８を１
つの封閉室２３内に位置せしめることができる。
封閉室２３には気体もしくは液体の供給孔２４を
設けて、ここから適宜の不活性気体又は液体が導
入され、これによつてロードセル１３の内側と外
側の圧力のバランスを取ることができるようにな
つている。ロードセル１３の外周表面にはまた冷
却ジヤケツト２５が取り付けられ、これによつて
ロードセルの外周を適当温度に冷却できるように
なつている。 The load cell 13 can be entirely covered with a cover member 21. The cover member 21 also has
It is fixed to the outer surface of the top wall 4 of the housing 6 via the sealing material 22, thereby allowing the load cell 8 to be
It can be located in one sealed chamber 23.
The sealed chamber 23 is provided with a gas or liquid supply hole 24 through which an appropriate inert gas or liquid is introduced so that the pressure inside and outside of the load cell 13 can be balanced. It's summery. A cooling jacket 25 is also attached to the outer circumferential surface of the load cell 13, so that the outer circumference of the load cell can be cooled to an appropriate temperature.
以上、詳述したところから明らかなように、本
発明によればロードセル本体が円筒状に形成さ
れ、その外周表面に歪ゲージを有するものであ
り、歪ゲージ１５は試験片１の収容されている高
温高圧などの特殊雰囲気からは完全に遮断されて
いるので、試験片１が高温高圧の腐蝕性雰囲気中
にある場合にも全く影響を受けることがないとと
もに、試験片１に加わる負荷重の反力を測定する
ための負荷ロツド８はシール手段、軸受機構その
他の何らの相対的変位を起こす部材と接触するこ
となく、直接円筒状のロードセル本体１１の内底
面に連結されているので、試験片の負荷重が精度
よく検出可能な特徴を有するものである。さらに
歪ゲージの取り付けられているロードセルの外表
面は、自由に所望の雰囲気条件に設定することが
可能であり、たとえば前述のように試験片１の置
かれている収容室２の圧力とバランスをとるため
の封閉室を形成したり、あるいはロードセルの外
表面を冷却するための冷却ジヤケツトを設けるな
どの付加的な装置が、所望通り自由に行ない得る
特徴を有するものである。 As is clear from the detailed description above, according to the present invention, the load cell main body is formed in a cylindrical shape and has a strain gauge on its outer circumferential surface, and the strain gauge 15 accommodates the test piece 1. Since it is completely isolated from special atmospheres such as high temperature and high pressure, it will not be affected at all even if the test piece 1 is in a high temperature and high pressure corrosive atmosphere, and the reaction of the load applied to the test piece 1 will be The load rod 8 for measuring force is directly connected to the inner bottom surface of the cylindrical load cell main body 11 without contacting sealing means, bearing mechanisms, or other members that cause relative displacement. The load weight can be detected with high accuracy. Furthermore, the outer surface of the load cell to which the strain gauge is attached can be freely set to a desired atmospheric condition, for example, as described above, the pressure and balance of the chamber 2 in which the test piece 1 is placed can be adjusted. Additional devices, such as creating a sealed chamber for cooling or providing a cooling jacket for cooling the outer surface of the load cell, are optional features as desired.
図は本発明の実施例装置の縦断面図である。
１……試験片、２……試験片収容室、３……ハ
ウジングの周側壁、４……ハウジングの頂壁（ロ
ードセルの支持フレーム）、５……ハウジングの
底壁、６……ハウジング、７，８……負荷ロツ
ド、１３……ロードセル、１４……ロードセル本
体、１５……歪ゲージ、１６……ロードセルの開
口端、１７……ロードセルの開口端における開
口、１８……ハウジングの頂壁（支持フレーム）
に設けた開口、１９……ロードセルの内底。
The figure is a longitudinal cross-sectional view of an apparatus according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Test piece, 2... Test piece storage chamber, 3... Circumferential wall of housing, 4... Top wall of housing (load cell support frame), 5... Bottom wall of housing, 6... Housing, 7 , 8...Load rod, 13...Load cell, 14...Load cell body, 15...Strain gauge, 16...Open end of load cell, 17...Opening at open end of load cell, 18...Top wall of housing ( support frame)
An opening provided in 19...the inner bottom of the load cell.
Claims (1)
本体の開口端を、前記筒状の本体の開口と連通す
る開口を有する支持フレームに固定支持させ、前
記筒状の本体の外周側面に歪ゲージを取り付ける
とともに、前記筒状の本体の封閉端の内底に試験
荷重が伝達される負荷ロツドの一端を連結し、前
記負荷ロツドの他端は前記筒状の本体の開口及び
前記支持フレームの開口を貫通して、特殊雰囲気
の試験片収容室内に伸びていることを特徴とする
ロードセル。 ２ 一端が開口し、他端が封閉されている筒状の
本体の開口端を、前記筒状の本体の開口と連通す
る開口を有する支持フレームに固定支持させ、前
記筒状の本体の外周側面に歪ゲージを取り付ける
とともに、前記筒状の本体の封閉端の内底に試験
荷重が伝達される負荷ロツドの一端を連結し、前
記負荷ロツドの他端は前記筒状の本件の開口及び
前記支持フレームの開口を貫通して、特殊雰囲気
の試験片収容室内に伸びており、さらに、前記本
体を前記支持フレームに固着したカバー部材によ
つて被包し、封閉室内に位置せしめたことを特徴
とするロードセル。[Scope of Claims] 1. The open end of a cylindrical main body, which is open at one end and closed at the other end, is fixedly supported by a support frame having an opening that communicates with the opening of the cylindrical main body, A strain gauge is attached to the outer circumferential side of the cylindrical body, and one end of a load rod through which the test load is transmitted is connected to the inner bottom of the closed end of the cylindrical body, and the other end of the load rod is attached to the inner bottom of the closed end of the cylindrical body. A load cell extending through an opening in the main body and an opening in the support frame into a test specimen storage chamber in a special atmosphere. 2. The open end of a cylindrical body that is open at one end and sealed at the other end is fixedly supported by a support frame having an opening that communicates with the opening of the cylindrical body, and the outer peripheral side of the cylindrical body is fixedly supported. At the same time, one end of a load rod to which a test load is transmitted is connected to the inner bottom of the closed end of the cylindrical body, and the other end of the load rod is connected to the opening of the cylindrical main body and the support. The main body is extended into a test specimen storage chamber in a special atmosphere through an opening in the frame, and further, the main body is covered by a cover member fixed to the support frame and positioned in the sealed chamber. load cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10013582A JPH0248047B2 (en) | 1982-06-10 | 1982-06-10 | ROODOSERU |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10013582A JPH0248047B2 (en) | 1982-06-10 | 1982-06-10 | ROODOSERU |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58216925A JPS58216925A (en) | 1983-12-16 |
| JPH0248047B2 true JPH0248047B2 (en) | 1990-10-23 |
Family
ID=14265867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10013582A Expired - Lifetime JPH0248047B2 (en) | 1982-06-10 | 1982-06-10 | ROODOSERU |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0248047B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4176708B2 (en) * | 2004-12-27 | 2008-11-05 | エスペック株式会社 | Material testing equipment |
| JP5414512B2 (en) * | 2009-12-24 | 2014-02-12 | 日鉄住金テクノロジー株式会社 | High pressure load cell and high pressure material strength test equipment |
-
1982
- 1982-06-10 JP JP10013582A patent/JPH0248047B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58216925A (en) | 1983-12-16 |
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