JP3350396B2 - Material testing machine - Google Patents
Material testing machineInfo
- Publication number
- JP3350396B2 JP3350396B2 JP08919797A JP8919797A JP3350396B2 JP 3350396 B2 JP3350396 B2 JP 3350396B2 JP 08919797 A JP08919797 A JP 08919797A JP 8919797 A JP8919797 A JP 8919797A JP 3350396 B2 JP3350396 B2 JP 3350396B2
- Authority
- JP
- Japan
- Prior art keywords
- tester
- dynamometer
- pressure
- testing machine
- switching
- 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 - Fee Related
Links
Classifications
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、動力計から供給さ
れる油圧により試験機本体を駆動する材料試験機に関
し、一台の動力計を複数の試験機本体に適用するように
した材料試験機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material testing machine for driving a testing machine main body by hydraulic pressure supplied from a dynamometer, and a material testing machine in which one dynamometer is applied to a plurality of testing machine main bodies. About.
【０００２】[0002]
【従来の技術】従来、材料試験機として、材料の耐圧性
を試験する耐圧試験機や、引張試験、圧縮試験あるいは
曲げ試験等を行う万能試験機などがある。これらの試験
機の試験機本体は、安定した駆動力を得ることができる
油圧を主な駆動源としており、この油圧は、試験機本体
における荷重やストロークの表示等を行う動力計を介し
て供給される。2. Description of the Related Art Conventionally, as a material testing machine, there are a pressure testing machine for testing the pressure resistance of a material and a universal testing machine for performing a tensile test, a compression test, a bending test and the like. The main body of the test machine of these test machines is hydraulic pressure capable of obtaining a stable driving force, and this hydraulic pressure is supplied through a dynamometer for displaying the load and stroke of the test machine body. Is done.
【０００３】また、耐圧試験機と万能試験機の試験機本
体で得られる計測データは荷重やストロークなどそれぞ
れ同様なデータであるので、動力計は耐圧試験機、万能
試験機の何れにも用いることができる。そこで、一台の
動力計に対して耐圧試験機と万能試験機の二台の試験機
本体を装備し、この動力計の油圧系をそれぞれの試験機
本体で共用し、耐圧試験機と万能試験機を切り換えて駆
動するようにしたものがある。[0003] Also, since the measurement data obtained by the test machine body of the pressure tester and the universal tester are similar data such as load and stroke, respectively, the dynamometer is used for both the pressure tester and the universal tester. Can be. Therefore, one dynamometer is equipped with two test machine bodies, a pressure test machine and a universal test machine, and the hydraulic system of this dynamometer is shared by each test machine body. Some machines are switched and driven.
【０００４】このような材料試験機において油圧系を耐
圧試験機と万能試験機とで切り換えるために、従来は図
３(A) ，(B) のようにしている。図３(A) は動力計１０
と試験機本体を高圧ホース２０，３０で接続する場合で
あり、一方の試験機本体を使用するときは他方の試験機
本体の高圧ホース２０（または３０）を動力計１０から
外して蓋をして使用する。また、図３(B) はバルブを用
いる場合であり、動力計１０から試験機本体に接続され
たパイプ４０，５０にバルブ６０，７０を設け、使用す
る試験機本体側のバルブ６０（または７０）を開き、使
用しない試験機本体側のバルブ７０（または６０）を閉
じるようにしている。Conventionally, as shown in FIGS. 3A and 3B, in order to switch the hydraulic system between a pressure tester and a universal tester in such a material testing machine. FIG. 3 (A) shows a dynamometer 10
And the tester main body are connected by high pressure hoses 20 and 30. When one tester main body is used, the high pressure hose 20 (or 30) of the other tester main body is removed from the dynamometer 10 and the lid is closed. To use. FIG. 3B shows a case where a valve is used. Valves 60 and 70 are provided on pipes 40 and 50 connected from the dynamometer 10 to the tester main body, and the valve 60 (or 70) on the side of the tester main body to be used. ) Is opened, and the valve 70 (or 60) on the side of the tester main body that is not used is closed.
【０００５】[0005]
【発明が解決しようとする課題】しかし、上記のように
高圧ホースの着脱やバルブの開閉を行う作業は煩雑であ
り、試験機本体の切換えを容易にすることが要求されて
いる。本発明は、一台の動力計を複数の試験機本体に適
用するようにした材料試験機において、試験機本体の切
換えを容易に行えるようにすることを課題とする。However, the work of attaching and detaching the high-pressure hose and opening and closing the valve as described above is complicated, and there is a demand for easy switching of the test machine main body. SUMMARY OF THE INVENTION It is an object of the present invention to facilitate switching of a testing machine body in a material testing machine in which one dynamometer is applied to a plurality of testing machine bodies.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めになした本発明の材料試験機は、試験機本体の駆動源
となる油圧を供給する一台の動力計に対して複数の試験
機本体を設け、該動力計と各試験機本体とを油圧を伝え
る油圧パイプでそれぞれ接続するとともに、該油圧パイ
プに電磁弁をそれぞれ設け、前記複数の試験機本体のう
ちの任意の一つの試験機本体に対して前記油圧パイプを
介して前記動力計からの油圧を伝えるように前記電磁弁
を切り換える切換え手段を該動力計に設け、前記切換え
手段により前記電磁弁を切り換えることにより、駆動可
能な試験機本体を選択的に切り換えるようにしたことを
特徴とする。A material testing machine according to the present invention, which has been made to solve the above-mentioned problems, comprises a plurality of testers for a single dynamometer for supplying hydraulic pressure, which is a driving source of a testing machine body. The dynamometer and each tester main body are connected by hydraulic pipes for transmitting hydraulic pressure, and the hydraulic pipes are provided with solenoid valves, respectively, for testing any one of the plurality of tester main bodies. The dynamometer is provided with switching means for switching the electromagnetic valve so as to transmit oil pressure from the dynamometer to the machine body via the hydraulic pipe, and the dynamometer can be driven by switching the electromagnetic valve by the switching means. The tester body is selectively switched.
【０００７】[0007]
【発明の実施の形態】以下、本発明の一実施の形態につ
いて図面を参照して説明する。図１は本発明の一実施の
形態に係る材料試験機の正面図である。この材料試験機
は、耐圧試験機１、万能試験機２、動力計３を備えてお
り、耐圧試験機１は油圧パイプ４で動力計３に接続さ
れ、万能試験機２は油圧パイプ５で動力計３に接続され
ている。そして、耐圧試験機１および万能試験機２は、
動力計３から油圧パイプ４，５を介して供給される油圧
によりそれぞれ駆動される。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a material testing machine according to one embodiment of the present invention. This material testing machine includes a pressure test machine 1, a universal test machine 2, and a dynamometer 3. The pressure test machine 1 is connected to the dynamometer 3 by a hydraulic pipe 4, and the universal test machine 2 is powered by a hydraulic pipe 5. It is connected to a total of three. And the pressure tester 1 and the universal tester 2
The dynamometer 3 is driven by hydraulic pressure supplied from the dynamometer 3 via the hydraulic pipes 4 and 5, respectively.
【０００８】また、耐圧試験機１および万能試験機２
は、試験材料に加わる荷重を検出するための圧力セル
や、クロスヘッド１１，２１のストローク（変位）を検
出する変位計（エンコーダ）をそれぞれ備えており、こ
れらの圧力セル、変位計からの計測信号は図示しない信
号線を介して動力計３に入力される。Further, a pressure tester 1 and a universal tester 2
Is equipped with a pressure cell for detecting the load applied to the test material and a displacement meter (encoder) for detecting the stroke (displacement) of the crossheads 11 and 21. Measurement from these pressure cells and the displacement meter is provided. The signal is input to dynamometer 3 via a signal line (not shown).
【０００９】動力計３の前面パネル３１には、荷重をア
ナログ表示（指針表示）するための指示計３２、荷重や
ストローク等を表示するデジタル表示部３３および操作
パネル３４が配設されている。なお、動力計３は内部に
マイクロコンピュータを備えており、このマイクロコン
ピュータの制御により、耐圧試験機１あるいは万能試験
機２からの計測信号を計測値に換算するとともに、これ
らの値を指示計３２やデジタル表示部３３に表示する。A front panel 31 of the dynamometer 3 is provided with an indicator 32 for displaying the load in an analog manner (displaying a pointer), a digital display section 33 for displaying the load and stroke, and an operation panel 34. The dynamometer 3 includes a microcomputer therein, and under the control of the microcomputer, converts the measurement signals from the pressure resistance tester 1 or the universal tester 2 into measured values, and converts these values into the indicator 32. Or on the digital display unit 33.
【００１０】指示計３２の文字盤には、円形の目盛に沿
って真上から６０度づつ隔てた６カ所にデジタル表示器
３２ａが配設されており、このデジタル表示器３２ａに
は、文字盤の目盛のレンジに対応する数値が表示され
る。また、操作パネル３４には試験機の切換時に操作す
る切換スナップスイッチ３４ａが配設されている。On the dial of the indicator 32, there are provided digital displays 32a at six positions 60 degrees apart from each other directly above from along the circular scale, and the digital display 32a has a dial. The numerical value corresponding to the range of the scale is displayed. Further, the operation panel 34 is provided with a switching snap switch 34a which is operated when the tester is switched.
【００１１】油圧供給パイプ４，５の動力計３の近傍に
は電磁弁６，７がそれぞれ配設されており、この電磁弁
６，７は、切換スナップスイッチ３４ａの操作により、
動力計３から出力される制御信号によって開閉状態がそ
れぞれ切り換えられる。これにより、耐圧試験機１側の
電磁弁６が開状態で万能試験機２側の電磁弁７が閉状態
となる耐圧試験機モードと、耐圧試験機１側の電磁弁６
が閉状態で万能試験機２側の電磁弁７が開状態となる万
能試験機モードとのいずれかに選択的に切り換えられ
る。そして、動力計３からの油圧は、耐圧試験機モード
では耐圧試験機１だけに供給されて耐圧試験機１が駆動
可能となり、万能試験機モードでは万能試験機２だけに
供給されて万能試験機２が駆動可能となる。Electromagnetic valves 6 and 7 are provided near the dynamometer 3 of the hydraulic supply pipes 4 and 5, respectively. The electromagnetic valves 6 and 7 are operated by operating a changeover snap switch 34a.
The open / close state is switched by a control signal output from the dynamometer 3. Thus, the pressure-resistant tester mode in which the electromagnetic valve 6 of the pressure-resistant tester 1 is in the open state and the electromagnetic valve 7 of the universal tester 2 is in the closed state,
Is selectively closed in the universal testing machine mode in which the solenoid valve 7 of the universal testing machine 2 is opened in the closed state. The hydraulic pressure from the dynamometer 3 is supplied to only the pressure tester 1 in the pressure tester mode, and the pressure tester 1 can be driven. In the universal tester mode, the hydraulic pressure is supplied only to the universal tester 2 to be tested. 2 can be driven.
【００１２】ここで、耐圧試験機１で行う耐圧試験と万
能試験機２で行う各種試験とでは試験条件が異なってお
り、耐圧試験機１と万能試験機２における荷重の最大容
量が異なっている。例えば、耐圧試験機１の容量は１０
００ｋＮ（キロニュートン）であり、万能試験機の容量
は５００ｋＮである。なお、この例では耐圧試験機１と
万能試験機２の各圧力セルは同じ型式のものである。Here, test conditions are different between the pressure test performed by the pressure tester 1 and the various tests performed by the universal tester 2, and the maximum load capacity of the pressure tester 1 and the universal tester 2 is different. . For example, the capacity of the pressure resistance tester 1 is 10
00 kN (kilonewton) and the capacity of the universal testing machine is 500 kN. In this example, the pressure cells of the pressure tester 1 and the universal tester 2 are of the same type.
【００１３】そこで、耐圧試験機１から万能試験機２あ
るいは万能試験機２から耐圧試験機１にそれぞれ選択し
て切り換えたとき、動力計３において、選択された試験
機本体の種類に応じた荷重を表示するために、指示計３
２でアナログ表示するレンジを選択された試験機本体に
対応するように切り換える。また、荷重の計測信号を計
測値に換算する換算係数、この計測値を指示計３２にお
ける指針の回転角度に換算する換算係数もそのレンジに
合うように切り換える。なお、変位計で検出するストロ
ークのレンジは両方の試験機本体とも最大２００ｍｍで
ある。Therefore, when the pressure tester 1 and the universal tester 2 are selected and switched from the universal tester 2 to the pressure tester 1 respectively, when the dynamometer 3 receives a load corresponding to the type of the selected tester main body. Indicator 3 to display
In step 2, the range for analog display is switched so as to correspond to the selected tester main body. Further, a conversion coefficient for converting the load measurement signal into a measured value and a conversion coefficient for converting the measured value into the rotation angle of the pointer of the indicator 32 are also switched to match the range. Note that the range of the stroke detected by the displacement meter is a maximum of 200 mm for both the tester bodies.
【００１４】図２は荷重のレンジ切換えに対応する指示
計３２の文字盤の切換え状態を示す図であり、図２(A)
は耐圧試験機１が選択された場合、図２(B) は万能試験
機２が選択された場合を示している。図２(A) のよう
に、耐圧試験機１が選択された場合は、耐圧試験機１に
おける荷重のレンジの１０００ｋＮに対応して、指示計
３２のデジタル表示器３２ａの表示が“２０”、“５
０”、“１００”、“２００”、“５００”および“１
０００”となる。また、図２(B) のように、万能試験機
２が選択された場合は、万能試験機２における荷重のレ
ンジの５００ｋＮに対応して、デジタル表示器３２ａの
表示が、“１０”、“２５”、“５０”、“１００”、
“２５０”および“５００”となる。FIG. 2 is a diagram showing a state of switching the dial of the indicator 32 corresponding to the switching of the load range, and FIG.
FIG. 2B shows a case where the pressure tester 1 is selected, and FIG. 2B shows a case where the universal tester 2 is selected. As shown in FIG. 2 (A), when the pressure tester 1 is selected, the display of the digital display 32a of the indicator 32 is "20", corresponding to the load range of 1000 kN in the pressure tester 1. “5
0, 100, 200, 500, and 1
When the universal testing machine 2 is selected as shown in FIG. 2 (B), the display of the digital display 32a corresponds to the load range of the universal testing machine 2 of 500 kN. "10", "25", "50", "100",
"250" and "500".
【００１５】なお、上記のようなレンジの切換えに対応
する表示の切換えや換算係数等の切換えは、動力計３に
内蔵されるマイクロコンピュータの周知の動作により容
易に行うことができる。例えば、試験機本体の種類に対
応する表示データや換算係数のデータなどをメモリに記
憶しておき、切換スナップスイッチ３４ａの状態を判断
して選択された試験機本体を判別し、それぞれ選択され
た試験機本体に対応する各データを読み出すことによ
り、各データを内部設定する。The switching of the display and the switching of the conversion coefficient and the like corresponding to the switching of the range as described above can be easily performed by the well-known operation of the microcomputer built in the dynamometer 3. For example, display data and conversion factor data corresponding to the type of the tester main body are stored in the memory, the state of the changeover snap switch 34a is determined, the selected tester main body is determined, and the selected tester main body is selected. Each data is set internally by reading each data corresponding to the tester main body.
【００１６】また、電磁弁６，７の切り換えは、切換ス
ナップスイッチ３４ａで直接電源を切り換えて行うよう
にしてもよいし、マイクロコンピュータの制御により切
り換えるようにしてもよい。The switching of the solenoid valves 6 and 7 may be performed by directly switching the power supply by the switching snap switch 34a, or may be performed by control of a microcomputer.
【００１７】上記の実施の態様では耐圧試験機と万能試
験機を用いているが、他の試験機本体でもよい。また、
試験機本体は２台以上であってもよい。In the above embodiment, the pressure tester and the universal tester are used, but another tester main body may be used. Also,
The number of the testing machine main bodies may be two or more.
【００１８】[0018]
【発明の効果】以上説明したように本発明の材料試験機
によれば、一台の動力計に対して複数の試験機本体を設
け、動力計と各試験機本体とを油圧パイプでそれぞれ接
続するとともに油圧パイプに電磁弁をそれぞれ設け、動
力計に設けた切換え手段で電磁弁を切り換えることによ
り、駆動可能な試験機本体を選択的に切り換えるように
したので、試験機本体の切換えを容易に行うことができ
る。また、試験機本体の切換えに連動して動力計におけ
る表示のレンジを切り換えるようにすると、さらに切換
え作業が容易になる。As described above, according to the material testing machine of the present invention, a plurality of testing machine bodies are provided for one dynamometer, and the dynamometer and each testing machine body are connected by the hydraulic pipes. In addition, a solenoid valve is provided on the hydraulic pipe, and the solenoid valve is switched by the switching means provided on the dynamometer, thereby selectively switching the drivable test machine main body, thereby facilitating the switching of the test machine main body. It can be carried out. Further, if the display range of the dynamometer is switched in conjunction with the switching of the tester main body, the switching operation is further facilitated.
【図１】本発明の一実施の形態の材料試験機の外観正面
図である。FIG. 1 is an external front view of a material testing machine according to an embodiment of the present invention.
【図２】実施の形態における指示計の文字盤の状態を示
す図である。FIG. 2 is a diagram showing a state of a dial of the indicator according to the embodiment.
【図３】従来の試験機本体の切換え方法を説明する図で
ある。FIG. 3 is a diagram illustrating a conventional method of switching the tester main body.
１ 耐圧試験機 ２ 万能試験機 ３ 動力計 ４，５ 油圧パイプ ６，７ 電磁弁 DESCRIPTION OF SYMBOLS 1 Withstand pressure testing machine 2 Universal testing machine 3 Dynamometer 4,5 Hydraulic pipe 6,7 Solenoid valve
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭54−40681（ＪＰ，Ａ) 特開 平７−286948（ＪＰ，Ａ) 実開 平６−25745（ＪＰ，Ｕ) 実公 昭26−4281（ＪＰ，Ｙ１) 実公 昭49−20148（ＪＰ，Ｙ１) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-40681 (JP, A) JP-A-7-286948 (JP, A) JP-A-6-25745 (JP, U) 4281 (JP, Y1) Jiko 49-20148 (JP, Y1)
Claims (2)
る一台の動力計に対して複数の試験機本体を設け、 該動力計と各試験機本体とを油圧を伝える油圧パイプで
それぞれ接続するとともに、該油圧パイプに電磁弁をそ
れぞれ設け、 前記複数の試験機本体のうちの任意の一つの試験機本体
に対して前記油圧パイプを介して前記動力計からの油圧
を伝えるように前記電磁弁を切り換える切換え手段を該
動力計に設け、 前記切換え手段により前記電磁弁を切り換えることによ
り、駆動可能な試験機本体を選択的に切り換えるように
したことを特徴とする材料試験機。1. A plurality of test machine bodies are provided for one dynamometer for supplying hydraulic pressure as a drive source of the test machine body, and each of the dynamometers and each test machine body is connected by a hydraulic pipe for transmitting hydraulic pressure. Connected to each other, an electromagnetic valve is provided in each of the hydraulic pipes, and the oil pressure from the dynamometer is transmitted to the arbitrary one of the plurality of test machine main bodies through the hydraulic pipe to the test machine main body. A material testing machine, wherein a switching means for switching an electromagnetic valve is provided in the dynamometer, and the drivable testing machine body is selectively switched by switching the electromagnetic valve by the switching means.
動力計における表示のレンジを選択された試験機本体に
対応するレンジに切り換えるようにしたことを特徴とす
る請求項１記載の材料試験機。2. The material test according to claim 1, wherein the display range of said dynamometer is switched to a range corresponding to the selected tester main body in conjunction with the operation of said switching means. Machine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08919797A JP3350396B2 (en) | 1997-04-08 | 1997-04-08 | Material testing machine |
| KR1019980002984A KR100257945B1 (en) | 1997-04-08 | 1998-02-03 | Material tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08919797A JP3350396B2 (en) | 1997-04-08 | 1997-04-08 | Material testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10281958A JPH10281958A (en) | 1998-10-23 |
| JP3350396B2 true JP3350396B2 (en) | 2002-11-25 |
Family
ID=13963996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08919797A Expired - Fee Related JP3350396B2 (en) | 1997-04-08 | 1997-04-08 | Material testing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3350396B2 (en) |
| KR (1) | KR100257945B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915704A (en) * | 2010-08-17 | 2010-12-15 | 浙江中隧桥波形钢腹板有限公司 | Large-scale pressure test equipment and test methods in the mountain |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100338899B1 (en) * | 1999-04-01 | 2002-05-30 | 김헌영 | A system for assessing static and dynamic strength of glass plate |
| CN103760031A (en) * | 2014-01-16 | 2014-04-30 | 江苏赛福天钢索股份有限公司 | Steel wire rope extrusion resistance measuring device |
| CN104616588A (en) * | 2015-01-21 | 2015-05-13 | 苏州市职业大学 | Small manual hydraulic material stretching instrument |
| CN107153029B (en) * | 2017-06-09 | 2020-01-14 | 上海应用技术大学 | Device and method for testing tangential rigidity of wheel disc joint surface |
| CN109580473A (en) * | 2019-01-03 | 2019-04-05 | 中国民航大学 | The electrochemical in-situ test device of DIC is combined under the conditions of slow strain rate tension |
| CN110686814A (en) * | 2019-10-17 | 2020-01-14 | 徐州烁鼎机械制造有限公司 | Engineering machine tool dismantles and examines pressure equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4920148Y1 (en) * | 1969-09-22 | 1974-05-29 | ||
| JPS5440681A (en) * | 1977-09-06 | 1979-03-30 | Sumitomo Electric Ind Ltd | Method and apparatus for thermal cracking test of ultrahard alloy |
| JP2503616Y2 (en) * | 1992-08-31 | 1996-07-03 | 株式会社島津製作所 | Material testing machine |
| JP3137530B2 (en) * | 1994-04-15 | 2001-02-26 | 三菱重工業株式会社 | Strain speed control device |
-
1997
- 1997-04-08 JP JP08919797A patent/JP3350396B2/en not_active Expired - Fee Related
-
1998
- 1998-02-03 KR KR1019980002984A patent/KR100257945B1/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915704A (en) * | 2010-08-17 | 2010-12-15 | 浙江中隧桥波形钢腹板有限公司 | Large-scale pressure test equipment and test methods in the mountain |
| CN101915704B (en) * | 2010-08-17 | 2012-09-05 | 浙江中隧桥波形钢腹板有限公司 | In-massif large scale pressure test equipment and test method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980079666A (en) | 1998-11-25 |
| KR100257945B1 (en) | 2000-06-01 |
| JPH10281958A (en) | 1998-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102162778B (en) | Pipeline elbow multi-axis ratchet strain test system and method | |
| US4976144A (en) | Diagnostic apparatus and method for fluid control valves | |
| JPH05501765A (en) | Method and apparatus for measuring loads acting on a valve stem of a motorized valve assembly | |
| JP3350396B2 (en) | Material testing machine | |
| CA2101054C (en) | Valve diagnostic system including auxiliary transducer box | |
| CA2677764A1 (en) | Non-contact torque sensing for valve actuators | |
| US20090211339A1 (en) | Single car test interface device | |
| NO302537B1 (en) | Apparatus and method for determining the quality of an assembly of tool parts, especially pipe fittings | |
| CN106959180A (en) | Digital display torsion testing machine is used in teaching | |
| US4586142A (en) | Pressurized cable-sheath leak locating instrument | |
| CN101949713A (en) | Diagnostic automobile combined instrument, instrument diagnostor and instrument diagnosing method | |
| US11473994B2 (en) | Portable tester for a leakage rate of a cylinder in an automobile engine | |
| CN120020524A (en) | Alignment device and method for testing system | |
| JP2001349466A (en) | Valve seat deterioration detecting device for valve driven by electric actuator | |
| JP2503616Y2 (en) | Material testing machine | |
| KR100206652B1 (en) | Instrument for estimating existing stress | |
| CN216815847U (en) | Pressure sensor testing device | |
| CN216246994U (en) | Pressure sensor testing device | |
| CN220490283U (en) | Torque calibration device | |
| US20260126362A1 (en) | Actuator-based test machine calibration instrument | |
| AU632759B2 (en) | Diagnostic apparatus and method for fluid control valves | |
| AU736985B2 (en) | Auger unit for torque transducer | |
| JP3140149B2 (en) | Rotary torque checker | |
| KR20020094217A (en) | Unity brake performance tester | |
| JP3499518B2 (en) | Material testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020813 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |