JPH0291537A - Underwater vibration stand - Google Patents
Underwater vibration standInfo
- Publication number
- JPH0291537A JPH0291537A JP63245489A JP24548988A JPH0291537A JP H0291537 A JPH0291537 A JP H0291537A JP 63245489 A JP63245489 A JP 63245489A JP 24548988 A JP24548988 A JP 24548988A JP H0291537 A JPH0291537 A JP H0291537A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- water
- vibration
- spare
- vibration table
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 abstract description 7
- 230000005284 excitation Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract 1
- 238000012806 monitoring device Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は水中振動台に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an underwater shaking table.
例えば、海洋構造物模型実験用の水中振動台としては、
従来、例えば、第４図縦断面図に示すように、水槽底に
凹設されたピットに動電型加振機０２８を設置し、これ
により誘起された鉛直方向及び又は水平方向の振動を振
動台０３に云えるための複数の支持棒０２９と水槽底板
０３１との間にフランジ０３０を介して防水シール０３
２を設は振動台０３上面にはボルト０３３を介して供試
体０３４が固着されるものが知られている。For example, as an underwater shaking table for marine structure model experiments,
Conventionally, for example, as shown in the longitudinal cross-sectional view of FIG. A waterproof seal 03 is installed via a flange 030 between a plurality of support rods 029 for attaching to the stand 03 and the aquarium bottom plate 031.
2 is known, in which a specimen 034 is fixed to the upper surface of the vibration table 03 via bolts 033.
また、この種の水中振動台では防水シール０３２が疲労
破壊した場合に備え、フランジ０３０の若干下方に受皿
０３５を設け、そこに溜った水はビニールホース０３６
により基礎ＧＬの側−４０３７に導き、排水ポンプ０３
８で外部に排水するようになっている。In addition, in this type of underwater vibration table, in case the waterproof seal 032 breaks due to fatigue, a saucer 035 is provided slightly below the flange 030, and the water collected there is drained through a vinyl hose 035.
Guided to the foundation GL side-4037, drain pump 03
8 to drain water to the outside.
しかしながら、このような装置では、下記のような欠点
がある。However, such a device has the following drawbacks.
（１）鉛直加振の場合に、振動台０３下面側の水０３９
が振動台０３周囲を経て振動台０３上面側にまたその逆
方向に移動するので、この流体力が供試体０３４に加わ
る流体抵抗力に影響し、水中振動試験の真の結果がゆが
められる惧れがある。(1) In the case of vertical vibration, the water 039 on the bottom side of the vibration table 03
Since the fluid moves around the vibration table 03 to the upper surface of the vibration table 03 and in the opposite direction, there is a risk that this fluid force will affect the fluid resistance force applied to the specimen 034, distorting the true results of the underwater vibration test. There is.
（２）万一防水シール０３２が破壊した場合でも、動電
型加振機０２８に水０３９がかからないようにするには
、防水シール０３２からの水０３９の漏れ速度が排水ポ
ンプ０３８の容量以上であると考えると、受皿０３５の
容量は水槽の試験時の最大水量と同等以上設けておかな
ければならない。従って、水深が大きいほど、受皿０３
５は大規模にする必要があり、装置が大型化して不経済
になる。(2) In order to prevent the water 039 from splashing onto the electrodynamic vibrator 028 even if the waterproof seal 032 breaks, the leakage rate of the water 039 from the waterproof seal 032 must be greater than the capacity of the drain pump 038. Considering that there is, the capacity of the saucer 035 must be equal to or greater than the maximum water volume during the test of the aquarium. Therefore, the deeper the water depth, the more the saucer 03
5 needs to be large-scale, making the device large and uneconomical.
（３）支持棒０２９と受皿０３５との水平方向間隙は、
水平加振の場合のストローク以上確保する必要があるの
で、水平加振ストロークが大きいほど防水シール０３２
破壊時の漏水を受皿０３５で受けることが困難になり安
全性が低下する。(3) The horizontal gap between the support rod 029 and the saucer 035 is
It is necessary to ensure a stroke greater than that for horizontal excitation, so the larger the horizontal excitation stroke, the more waterproof seal 032
It becomes difficult for the saucer 035 to catch water leakage at the time of destruction, reducing safety.
本発明は、このような事情に鑑みて提案されたもので、
加振試験の際にに振動台下の上下部の水の移動が供試体
に影響せず、かつ防水シールが破壊した際の漏水受皿を
不要とし試験精度。The present invention was proposed in view of these circumstances, and
During the vibration test, the movement of water between the upper and lower parts of the bottom of the shaking table does not affect the specimen, and there is no need to use a water leakage pan when the waterproof seal is broken, ensuring test accuracy.
コンパクト性及び安全性に優れた水中振動台を提供する
ことを目的とする。The purpose of the present invention is to provide an underwater vibration table that is compact and safe.
そのために本発明は床面に凹設された水槽の底面の央部
に更に振動機械用のビットが凹設され、かつ上記ビット
に上記水槽底面と同一レベルの供試体据付用頂面を有す
る耐水振動台が設置された水平振動及び又は鉛直振動可
能の水中振動台において、上記ビットの開口部上端と上
記振動台頂面との間に周設的に装着され水槽水の落下を
防止するとともに上記振動に追従可能の可撓性常用シー
ルと、上記常用シールの若干下方であって上記ビットの
開口部と上記振動台の側面との間に周設的に装着され上
記常用シールと同一構造を有する予備シールと、上記予
備シールの上面に配設された漏水検知器とを具えたこと
を特徴とする〇
〔作用〕
水槽底のビット開口部と振動台頂面との間に周設的に装
着され振動に追従可能の可撓性常用シールが設けられて
いるので、鮨直加振の際の振動台の上下部の水の移動に
よる流体力の影響が防止できる。また、ビット開口部と
振動台頂面の若干下方の側面との間に周設的に装着され
振動に追従可能の可撓性予備シールが設けられているの
で、常用シールが破壊した際にも予備シールで水をシー
ルすることができる。更に、予備シールには漏水検知器
が周設されているので、常用シールの漏水の早期発見が
可能である。To this end, the present invention provides a water tank in which a bit for a vibrating machine is further recessed in the center of the bottom of a water tank recessed in the floor surface, and the bit has a top surface for installing a specimen at the same level as the bottom of the water tank. In an underwater vibration table installed with a vibration table capable of horizontal vibration and/or vertical vibration, the bit is installed circumferentially between the upper end of the opening of the bit and the top surface of the vibration table to prevent the aquarium water from falling and a flexible regular seal that can follow vibration; and a flexible regular seal that is installed slightly below the regular seal and between the opening of the bit and the side surface of the vibration table and has the same structure as the regular seal. 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇Operation 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇 Operation 〇 Operation 〇 〇 Function 〇 Function] Function Offectiveness Offectiveness Function] to a water tank to a water tank to a water tank to a water tank to a water tank is being attached to the top surface of the vibrating table is installed circumferentially] of a spare seal and a water leakage detector disposed on the upper surface of the above-mentioned spare seal. Since a flexible regular seal that can follow the vibration is provided, it is possible to prevent the influence of fluid force caused by the movement of water between the upper and lower parts of the vibration table when directly shaking the sushi. In addition, a flexible spare seal is installed circumferentially between the bit opening and the slightly lower side of the top surface of the vibration table and can follow vibrations, so it can be used even if the regular seal breaks. Water can be sealed with a preliminary seal. Furthermore, since a water leakage detector is installed around the preliminary seal, it is possible to detect water leakage from the regular seal at an early stage.
本発明の一実施例を図面について説明すると、第４図と
同一の符番はそれぞれ同図と同一の部材を示し、まず、
第１図縦断面図において、１は基盤ＧＬに凹設された水
槽、２は水槽１の央部に更罠凹設されたビット、３はビ
ット２の底面に自在継手４を介して取付けられた前後１
対の釣直加振機５と側面に自在継手６を介して取付けら
れた水平加振機７とにそれぞれ自在継手８．９を介して
支持され６直方向及び水平方向に加振することができる
振動台で、その頂板は水蜜構造であるとともに、そこに
は供試体０３４がボルト０３３で固定されている。One embodiment of the present invention will be explained with reference to the drawings. The same reference numerals as in FIG. 4 indicate the same members as in the same figure, and first,
In the vertical cross-sectional view of FIG. 1, 1 is a water tank recessed in the base GL, 2 is a bit with a further recess formed in the center of the water tank 1, and 3 is attached to the bottom of the bit 2 via a universal joint 4. Before and after 1
A pair of horizontal vibration exciters 5 and a horizontal vibration exciter 7 attached to the sides via universal joints 6 are supported via universal joints 8 and 9, respectively, and can be excited in the vertical and horizontal directions. The top plate of this vibration table has a watertight structure, and a specimen 034 is fixed thereto with bolts 033.
１０はビット２の開口頂部に周設されたシール取付部材
１１と振動台３の側板頂部に周設されたシール取付部材
１２との間に布設され水槽ｌ内の水０３９をビット２に
対して遮断する可撓性材料製Ｕ字状断面を有する長方形
枠型常用シール、１４はビット２の開口のシール取付部
材１１の若干下方に周設されたシール取付部材１５とシ
ール取付部材１２の若干下方の振動台３の側板に周設さ
れたシール取付部材１６との間に周設され常用シール１
０と同一構造の予備シールである。Reference numeral 10 is installed between a seal mounting member 11 installed around the top of the opening of the bit 2 and a seal installation member 12 installed around the top of the side plate of the vibration table 3. A rectangular frame regular seal 14 having a U-shaped cross section made of a flexible material for blocking, 14 is a seal mounting member 15 provided slightly below the seal mounting member 11 at the opening of the bit 2, and a seal mounting member 12 slightly below the seal mounting member 12. A regular seal 1 is provided between the seal mounting member 16 and the seal mounting member 16 provided around the side plate of the vibration table 3.
This is a preliminary seal with the same structure as 0.
次に、第２図水平断面図において、１７．１８はそれぞ
れシール取付部材１５，１６の溝１９゜２０に周設され
た漏水検知器である。Next, in the horizontal sectional view of FIG. 2, reference numerals 17 and 18 indicate water leakage detectors disposed around the grooves 19 and 20 of the seal mounting members 15 and 16, respectively.
更に、第３図は第１図の園部を示す部分拡大図で、２１
及び２２は漏水検知器１７ 、、１８を形成する電線で
、それ等はシール取付部材１５゜１６を貫通して外部の
警報ランプ２３及び警報器２４が設けられた監視装置２
５に接続されている。２６は監視装置２５のプラグであ
る。Furthermore, Figure 3 is a partially enlarged view showing the garden area in Figure 1, and is 21
and 22 are electric wires forming the water leakage detectors 17, 18, which pass through the seal mounting members 15 and 16 and connect to the monitoring device 2 provided with an external alarm lamp 23 and an alarm 24.
5. 26 is a plug of the monitoring device 25.
このような装置において、振動台３が水平方向、鉛直方
向に振動すると、常用シール１０及び予備シール１４は
しなやかに追従運動する。In such an apparatus, when the vibration table 3 vibrates in the horizontal and vertical directions, the regular seal 10 and the preliminary seal 14 flexibly move to follow.
そして、常用シール１０は振動台３の頂部に周設されて
いるので、口直加振の際の振動台３の上下の水０３９の
移動による計測流体力への影響が防げる。Since the regular seal 10 is disposed around the top of the vibration table 3, it is possible to prevent the movement of water 039 above and below the vibration table 3 from affecting the measured fluid force during direct vibration.
また、予備シール１４が常用シール１０の下方に並設さ
れているので、常用シール１０が万一破壊した際にも水
０３９は予備シール１４によりシールされ、従って嵩高
の受皿設備は不要となる。Further, since the spare seal 14 is arranged below the regular seal 10, even if the regular seal 10 should break, the water 039 will be sealed off by the preliminary seal 14, and therefore a bulky saucer facility will be unnecessary.
更に、予備シール１４と基礎ＧＬ又は振動台３との接続
部には、それぞれ漏水検知器１７゜１８が設けられてい
るので、水０３９の漏れの早期発見が可能となる。Further, since water leakage detectors 17 and 18 are provided at the connection portions between the preliminary seal 14 and the base GL or the vibration table 3, leakage of water 039 can be detected early.
このようｑ装置によれば、下記効果が奏せられる。According to such a q device, the following effects can be achieved.
（１）常用シールは振動台の頂部に周設されているので
、銭直加振の際の振動台の上下の水の移動による供試体
への流体力の影響が防げる。(1) Since the regular seal is provided around the top of the vibration table, it is possible to prevent the influence of fluid force on the specimen due to the movement of water above and below the vibration table during direct vibration.
従って、振動試験の精度が向上する。Therefore, the accuracy of the vibration test is improved.
（２）予備シールが並設されているので、常用シールが
破壊した際にも水をシールすることができる。従って、
受皿は不要となり装置がコンパクトになる。(2) Since the spare seals are arranged in parallel, water can be sealed even if the regular seals are destroyed. Therefore,
A saucer is not required, making the device more compact.
（３）予備シールと基礎又は振動台との接続部には、そ
れぞれ監視装置付漏水検知器が設けられているので、漏
水の早期発見が可能である。(3) Since a water leak detector with a monitoring device is installed at the connection between the preliminary seal and the foundation or the shaking table, early detection of water leaks is possible.
従って、予備シールの保全が確実となり予備としての信
頼性が向上する。Therefore, the maintenance of the spare seal is ensured, and its reliability as a spare is improved.
要するに本発明によれば、床面に凹設された水槽の底面
の央部に更に振動機械用のビットが凹設され、かつ上記
ビットに上記水槽底面と同一レベルの供試体据付用頂面
を有する耐水振動台が設置された水平振動及び又は鉛直
振動可能の水中振動台において、上記ビットの開口部上
端と上記振動台頂面との間に周設的に装着され水槽水の
落下を防止するとともに上記振動に追従可能の可撓性常
用シールと、上記常用シールの若干下方であって上記ビ
ットの開口部と上記振動台の側面との間に周設的に装着
され上記常用シールと同一構造を有する予備シールと、
上記予備シールの上面に配設された漏水検知器とを具え
たことにより、加振試験の際に振動台下の上下部の水の
移動が供試体に影響せず、かつ防水シールが破壊した際
の漏水受皿を不要とし試験精度、コンパクト性及び安全
性に優れた水中振動台を得るから、本発明は産業上極め
て宵祭なものである。In short, according to the present invention, a bit for a vibrating machine is further recessed in the center of the bottom of the water tank recessed in the floor, and the bit has a top surface for installing the specimen at the same level as the bottom of the water tank. In an underwater vibration table that is capable of horizontal vibration and/or vertical vibration and is equipped with a water-resistant vibration table, the vibration table is installed circumferentially between the upper end of the opening of the bit and the top surface of the vibration table to prevent water from falling in the aquarium. together with a flexible regular seal that can follow the vibration; and a flexible regular seal that is installed slightly below the regular seal and between the opening of the bit and the side surface of the vibration table and has the same structure as the regular seal. a preliminary seal having;
By equipping the above preliminary seal with a water leak detector placed on the top surface, the movement of water in the upper and lower parts of the shaking table did not affect the specimen during the vibration test, and the waterproof seal was destroyed. The present invention is extremely useful in industry because it eliminates the need for a water leakage tray and provides an underwater vibration table that is excellent in test accuracy, compactness, and safety.
第１図は本発明の一実施例を示す縦断面図、第２図は第
１図の…−Ｈに沿った水平断面図、第３図は第１図厘部
の部分拡大図である。
第４図は公知の水中振動台を示す縦断面図である。
１・・・水槽、２・・・ビット、３・・・振動台、４・
・・自在継手、５・・・金θ直加振機、６・・・自在継
手、７．・・・水平加振機、８，９・・・自在継手、１
０・・・常用シール、１１，１２・・・シール取付部材
、１４・・・予備シール、１５．１６・・・シール取付
部材、１７゜１８・・・漏水検知器、１９．２０・・・
溝、２１．２２・・・電線、２３・・・警報ランプ、２
４・・・警報器、２５・・・監視装置、２６・・・プラ
グ、０３３・・・ボルト、０３４・・・供試体、０３９
・・・ゴ（、ＧＬ・・・基礎。FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a horizontal sectional view taken along line -H in FIG. 1, and FIG. 3 is a partially enlarged view of the bottom portion of FIG. FIG. 4 is a longitudinal sectional view showing a known underwater vibration table. 1... Water tank, 2... Bit, 3... Vibration table, 4...
... Universal joint, 5... Gold θ direct vibrator, 6... Universal joint, 7. ...Horizontal vibrator, 8,9...Universal joint, 1
0... Regular seal, 11, 12... Seal mounting member, 14... Spare seal, 15.16... Seal mounting member, 17° 18... Water leak detector, 19.20...
Groove, 21.22...Electric wire, 23...Warning lamp, 2
4... Alarm device, 25... Monitoring device, 26... Plug, 033... Bolt, 034... Specimen, 039
...Go (,GL...basic.
Claims (1)
ピットが凹設され、かつ上記ピットに上記水槽底面と同
一レベルの供試体据付用頂面を有する耐水振動台が設置
された水平振動及び又は鉛直振動可能の水中振動台にお
いて、上記ピットの開口部上端と上記振動台頂面との間
に周設的に装着され水槽水の落下を防止するとともに上
記振動に追従可能の可撓性常用シールと、上記常用シー
ルの若干下方であつて上記ピットの開口部と上記振動台
の側面との間に周設的に装着され上記常用シールと同一
構造を有する予備シールと、上記予備シールの上面に配
設された漏水検知器とを具えたことを特徴とする水中振
動台。A pit for a vibrating machine is further recessed in the center of the bottom of the water tank recessed in the floor, and a water-resistant vibration table having a top surface for installing the specimen at the same level as the bottom of the water tank is installed in the pit. In an underwater vibration table capable of horizontal vibration and/or vertical vibration, a vibrator is installed circumferentially between the upper end of the opening of the pit and the top surface of the vibration table to prevent the aquarium water from falling and to follow the vibration. a flexible regular seal; a spare seal installed slightly below the regular seal between the opening of the pit and the side surface of the vibration table and having the same structure as the regular seal; An underwater vibration table characterized by comprising a water leakage detector disposed on the top surface of a preliminary seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63245489A JPH0621840B2 (en) | 1988-09-29 | 1988-09-29 | Underwater shaking table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63245489A JPH0621840B2 (en) | 1988-09-29 | 1988-09-29 | Underwater shaking table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0291537A true JPH0291537A (en) | 1990-03-30 |
| JPH0621840B2 JPH0621840B2 (en) | 1994-03-23 |
Family
ID=17134421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63245489A Expired - Lifetime JPH0621840B2 (en) | 1988-09-29 | 1988-09-29 | Underwater shaking table |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0621840B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6128960A (en) * | 1998-12-24 | 2000-10-10 | Lucent Technologies Inc. | Vibration testing of a pole-mounted communications network base station |
| CN107795594A (en) * | 2017-11-17 | 2018-03-13 | 北京博科测试***股份有限公司 | Underwater vibroseis and its universal driving device |
| CN108731894A (en) * | 2018-06-20 | 2018-11-02 | 天津大学 | A kind of structure for eliminating underwater shake table waterproof perturbation wave |
| CN113237618A (en) * | 2021-04-08 | 2021-08-10 | 天津大学 | Underwater shell modal test method considering internal flow field and pressure influence thereof |
| CN115450245A (en) * | 2022-06-20 | 2022-12-09 | 中国中元国际工程有限公司 | Underwater vibration table array foundation comprising large test pool and design method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757234A (en) * | 1980-09-24 | 1982-04-06 | Hitachi Ltd | Vibration testing machine |
| JPS6395334A (en) * | 1986-10-09 | 1988-04-26 | Mitsubishi Heavy Ind Ltd | Underwater vibration tester |
-
1988
- 1988-09-29 JP JP63245489A patent/JPH0621840B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757234A (en) * | 1980-09-24 | 1982-04-06 | Hitachi Ltd | Vibration testing machine |
| JPS6395334A (en) * | 1986-10-09 | 1988-04-26 | Mitsubishi Heavy Ind Ltd | Underwater vibration tester |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6128960A (en) * | 1998-12-24 | 2000-10-10 | Lucent Technologies Inc. | Vibration testing of a pole-mounted communications network base station |
| CN107795594A (en) * | 2017-11-17 | 2018-03-13 | 北京博科测试***股份有限公司 | Underwater vibroseis and its universal driving device |
| CN108731894A (en) * | 2018-06-20 | 2018-11-02 | 天津大学 | A kind of structure for eliminating underwater shake table waterproof perturbation wave |
| CN108731894B (en) * | 2018-06-20 | 2024-03-05 | 天津大学 | Eliminate structure of waterproof disturbance wave of vibrating table under water |
| CN113237618A (en) * | 2021-04-08 | 2021-08-10 | 天津大学 | Underwater shell modal test method considering internal flow field and pressure influence thereof |
| CN115450245A (en) * | 2022-06-20 | 2022-12-09 | 中国中元国际工程有限公司 | Underwater vibration table array foundation comprising large test pool and design method thereof |
| CN115450245B (en) * | 2022-06-20 | 2024-04-26 | 中国中元国际工程有限公司 | Underwater vibrating table array foundation comprising large test pool and design method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0621840B2 (en) | 1994-03-23 |
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