JPS5997849A - Automatic nut detachable device - Google Patents
Automatic nut detachable deviceInfo
- Publication number
- JPS5997849A JPS5997849A JP57204606A JP20460682A JPS5997849A JP S5997849 A JPS5997849 A JP S5997849A JP 57204606 A JP57204606 A JP 57204606A JP 20460682 A JP20460682 A JP 20460682A JP S5997849 A JPS5997849 A JP S5997849A
- Authority
- JP
- Japan
- Prior art keywords
- nut
- attached
- automatic nut
- upper mirror
- station
- 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
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000003795 desorption Methods 0.000 claims 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 206010073306 Exposure to radiation Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Cleaning In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は放射能汚染のあるボルトの清掃及びナツトの
着脱を自動的に行うことのできる装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that can automatically clean bolts contaminated with radioactivity and automatically attach and detach nuts.
原子炉圧力容器は、圧力容器本体と、この圧力容器本体
に載置した密閉頭部である上鏡とを植込みボルト（以下
単に［ボルトｊと称する）により接続し、圧力容器本体
を密閉するよう構成しである。The reactor pressure vessel is constructed by connecting the pressure vessel body and the upper mirror, which is a sealed head placed on the pressure vessel body, with a stud bolt (hereinafter simply referred to as bolt j), and sealing the pressure vessel body. It is composed.
第１図はボルトによる接続状態の詳細を示しボルト１３
は本体３２の７ランジ３２ａに形成した酸ネジ部３２ａ
′と螺合するネジ部１３ａにより圧力容器本体３２と接
続して、その上面より突出し、他方上鏡ｌの７ランジ１
ａに形成されネジ部１３ｂの外径より径の大きい挿通孔
１ａ’を挿通して他端のネジ部１３ｂが７ランジ１ａ外
に突出している。このネジ部１３ｂに対しナツト１５を
螺合し、その締付力によりボルト１３で上鏡１と本体３
２を強固に接続している。このボルト１３は上鏡１およ
び本体３２の円周方向に、殆んどナツト１５が接触する
程度近接させ、多数（数十本）配置しである。このため
ナツト１５は通常円筒形をしており、上端部に形成した
溝１５ａにより回転するよう構成しである。なお符号３
５はワッシャを示す。Figure 1 shows the details of the connection using bolts.
is an acid threaded portion 32a formed on the 7 flange 32a of the main body 32.
It is connected to the pressure vessel main body 32 by a threaded part 13a that is screwed into the 7 flange 1 of the upper mirror l, and protrudes from the upper surface of the pressure vessel main body 32.
The threaded portion 13b at the other end protrudes outside the 7 flange 1a by passing through the insertion hole 1a' formed in the hole 1a' and having a diameter larger than the outer diameter of the threaded portion 13b. The nut 15 is screwed into this threaded part 13b, and the bolt 13 is tightened with the tightening force to connect the upper mirror 1 and the main body 3.
2 are strongly connected. A large number (several tens) of bolts 13 are arranged in the circumferential direction of the upper mirror 1 and the main body 32 so that the nuts 15 almost touch each other. For this purpose, the nut 15 is generally cylindrical and is configured to rotate through a groove 15a formed at its upper end. Note that code 3
5 indicates a washer.
原子炉はその安全性を確認するため、年１回程度、圧力
容器の上鏡１を取り外し内部の点検を行うが、この場合
は前記数十本のボルトに取り付けたナツト１５をすべて
取り去らねばならない。この場合、ナツトを取り去るに
当って、先ずボルト１３のネジ部１３ｂに発生した錆を
取り除いて清掃し、しかる後にナツト１５を取り外すこ
とになる。従来はこのナツトの清掃は作業員がブラシを
用いて手作業により行っており、高放射能領域たる圧力
容器設置部におけるこれらの作業は人体に対して非常に
危険であった。またさらに使用するボルトは直径約１５
０ｍｍ、長さ約１８００ｍｍ、重さ約５０Ｋｇという大
型のものでありこれに対応してナツトも相当の重量物と
なり、作業性を悪化させる原因となっている。In order to confirm the safety of a nuclear reactor, the upper mirror 1 of the pressure vessel is removed and inspected inside about once a year, but in this case, all the nuts 15 attached to the dozens of bolts mentioned above must be removed. . In this case, when removing the nut, the rust generated on the threaded portion 13b of the bolt 13 is first removed and cleaned, and then the nut 15 is removed. Conventionally, this nut cleaning has been done manually by workers using brushes, and this work in the pressure vessel installation area, which is a highly radioactive area, is extremely dangerous to the human body. Furthermore, the bolt used is approximately 15 mm in diameter.
It is a large nut with a diameter of 0 mm, a length of about 1800 mm, and a weight of about 50 kg, and correspondingly, the nut is also quite heavy, which causes workability to deteriorate.
この発明の目的は上述の問題点に鑑み構成したものであ
り、圧力容器に取り付けたボルトの清掃及びこのボルト
に螺合させたナツトの脱着を自動的に行うことのできる
装置を提供することにある。The object of the present invention is to provide a device that can automatically clean bolts attached to a pressure vessel and automatically attach and detach nuts screwed onto the bolts. be.
要するにこの発明は上鏡に取り付けた架台とこの架台に
取り付けたステーションと、このステーションに取り付
けた清掃装置、ナツト脱着装置等から成ることを特徴と
する装置である。In short, the present invention is an apparatus characterized by comprising a pedestal attached to an upper mirror, a station attached to this pedestal, a cleaning device, a nut attachment/detachment device, etc. attached to this station.
以下この発明の実施例につき図面を用いて説明する。Embodiments of the present invention will be described below with reference to the drawings.
第２図及び第３図において、２は支持脚、４はこの支持
脚２により支持された平面環状のガイドレールであり、
この両者によって装置本体を構成すると共に同本体はこ
の支持脚２により圧力容器の上鏡１に形成した固定部に
対してボルト等により固定される。６はこのガイドレー
ル４に対して複数個（図示の場合は４個）取り付けたス
テーションであり、後述する芯出しに対応してガイドレ
ール４に沿って上鏡１の円周方向に移動可能なよう構成
しである。３はステーション６の円周方向への移動を行
う駆動装置である。また各ステーション６は別の駆動装
置５により上鏡ｌの直径方向への移動も可能となる。In FIGS. 2 and 3, 2 is a support leg, 4 is a planar annular guide rail supported by this support leg 2,
Both of them constitute the main body of the apparatus, and the main body is fixed by the supporting legs 2 to a fixing part formed on the upper mirror 1 of the pressure vessel with bolts or the like. Reference numeral 6 denotes a plurality of stations (four in the illustrated case) attached to the guide rail 4, which are movable in the circumferential direction of the upper mirror 1 along the guide rail 4 in response to centering described later. It is structured like this. 3 is a drive device that moves the station 6 in the circumferential direction. Further, each station 6 can also be moved in the diametrical direction of the upper mirror 1 by a separate drive device 5.
第４図はステーション６の詳細を示す。図中符号１１
ａ、 １１ ｂ、 １１ ｃは昇降装置７によって昇降
するアームであり、符号９はアームｌｌａに取り付けた
ボルト清掃装置、１０はアームｌｌｃに取り付けたナツ
ト脱着装置である。８はアーム１１ｂに取り付けた位置
決め装置である。FIG. 4 shows details of station 6. Code 11 in the figure
Reference numerals a, 11 b, and 11 c are arms that are raised and lowered by the lifting device 7, 9 is a bolt cleaning device attached to arm lla, and 10 is a nut attachment/removal device attached to arm llc. 8 is a positioning device attached to the arm 11b.
第５図及び第６図はこの位置決め装置の詳細を示す。筒
状の装置本体の側壁に対しては、例えば差動トランスか
ら成る芯ずれ検知器１４が二基取り付けである。この検
知器１４はその各々の接触棒１４ａの軸心がボルト３の
中心軸に向うよう配置し、かつ両検知器の接触棒の軸心
はほぼ直交するよう配置すると効果的である。１２ａは
ステーション６の移動を制御する遠隔操作盤１２内に配
置したａ軸加減算ユニットである。Figures 5 and 6 show details of this positioning device. Two misalignment detectors 14 made of, for example, a differential transformer are attached to the side wall of the cylindrical main body of the device. It is effective to arrange the detector 14 so that the axis of each contact rod 14a faces the central axis of the bolt 3, and to arrange the axes of the contact rods of both detectors to be substantially orthogonal. Reference numeral 12a denotes an a-axis addition/subtraction unit disposed within the remote control panel 12 that controls the movement of the station 6.
以上の構成の装置の作動につき説明する。The operation of the apparatus having the above configuration will be explained.
先ず、装置自体をクレーン等により上鏡１に運搬し、支
持脚２により同装置を上鏡１に取り付ける。次に各ステ
ーション６をガイドレール４に沿って移動させて所定の
位置に配置させ、しかる後に位置決め装置を下降させて
ポル）１３の一部をこの位置決め装置内に配置させ、前
記芯ずれ検知器１４による信号により芯出しを行う。First, the device itself is transported to the upper mirror 1 using a crane or the like, and the device is attached to the upper mirror 1 using the support legs 2. Next, each station 6 is moved along the guide rail 4 to be placed in a predetermined position, and then the positioning device is lowered to place a part of the pole 13 in this positioning device, and the misalignment detector is placed in the positioning device. Centering is performed using a signal from 14.
芯出しが完了したならば、ボルト清掃装置９を作動させ
てボルト１３の清掃を行い、続いて図示しないナツト回
動装置を有するナツト脱着装置１０を作動させてナツト
１５を取り去る。When the centering is completed, the bolt cleaning device 9 is operated to clean the bolt 13, and then the nut 15 is removed by operating the nut removing device 10 having a nut turning device (not shown).
第７図は上述した装置の他の実施例を示す。FIG. 7 shows another embodiment of the device described above.
この実施例の場合には装置本体の」二部に作業用足場１
６を取り付け、さらにこの足場から支持部材１９を介し
てナツト置き台１８を吊り下げ、前記の方法で取り外し
たナツト１５をこの置き台１８に載置し、全てのナツト
の取り外し作業が完了した時点でこの置き台ごとナツト
を所定の場所に運搬するよう構成したものである。In this embodiment, the work scaffold 1 is placed in the second part of the device body.
6 is attached, and the nut holder 18 is suspended from this scaffold via the support member 19, and the nut 15 removed in the above method is placed on this holder 18, and when the removal work of all the nuts is completed. The nut is transported to a predetermined location along with this stand.
なお芯ずれ検知器は前述の如き接触棒を用いた接触型の
外、超音波、磁力、光等を用いた非接触型であってもよ
く、場合によってはテレビカメラ等により芯ずれを検知
してもよい。In addition to the contact type using a contact rod as described above, the misalignment detector may also be a non-contact type using ultrasonic waves, magnetic force, light, etc. In some cases, misalignment can be detected using a television camera, etc. It's okay.
この発明を実施することにより、原子炉圧力容器の植込
みボルトに取り付けたナツトの脱着およびボルトの清掃
を自動的に行うことができるので作業員の被爆の虞れも
なく、シかも作業効率を大幅に高めることができる。By implementing this invention, the nuts attached to the stud bolts of the reactor pressure vessel can be automatically installed and removed, and the bolts can be cleaned, so there is no risk of worker exposure to radiation, and work efficiency can be greatly improved. can be increased to
第１図は植込みボルトの側面図、第２図はこの発明に係
る装置の平面図、第３図は第２図に示す装置の側面図、
第４図はステーションの側面図、第５図は芯ずれ検知器
の断面図、第６図は芯ずれ検知器の縦断面図、第７図は
別の実施例を示す本願装置の側面図である。
１・・・・・・上鏡
４・・・・・・ガイドレール
６・・・・・・ステーション
８・・・・・・芯ずれ検知器
（７）
・９ ・・川・ボルト清掃装置１０
・・川・ナツト脱着装置１１ａ、 ｌｌｂ、
ｌｌｃ −＝−＝アーム１３ ・・川・
植込みボルト１５ ・・・・・・ナツト
１６ ・・・・・・作業台１８
・川・・ナツト置き台（８）
３２
２７１−
／１ａ′
ａ
５２０′
３２０
０
特開昭５９−９７８４９ （４）
第４図
第５図1 is a side view of the stud, FIG. 2 is a plan view of the device according to the invention, and FIG. 3 is a side view of the device shown in FIG.
FIG. 4 is a side view of the station, FIG. 5 is a sectional view of the misalignment detector, FIG. 6 is a longitudinal sectional view of the misalignment detector, and FIG. 7 is a side view of the device of the present invention showing another embodiment. be. 1... Upper mirror 4... Guide rail 6... Station 8... Misalignment detector (7) ・9... River/bolt cleaning device 10
... Kawa/Natsuto detachment device 11a, llb,
llc -=-=Arm 13...River...
Stud bolt 15 ... Nut 16 ... Workbench 18
・River... Nut stand (8) 32 271- /1a' a 520' 320 0 JP-A-59-97849 (4) Fig. 4 Fig. 5
Claims (1)
レールを有する装置本体と、このガイドレールに配置し
、上鏡の円周方向または直径方向に移動するステーショ
ンと、このステーションに設けたボルト清掃装置等取り
付は用のアームとから成ることを特徴とする自動ナツト
脱着装置。 ２・ 前記アームに対してボルト清掃装置、ナツト脱着
装置、芯ずれ検知器のうち少くとも一つを取り付けたこ
とを特徴とする特許請求の範囲第１項記載の自動ナツト
脱着装置。 ３・ 装置本体に対して作業台を取り付けたことを特徴
とする特許請求の範囲第１項または第２項記載の自動ナ
ツト脱着装置。 ４・ 前記作業台に対してナツト置き台を取り付けたこ
とを特徴とする特許請求の範囲第３項記載の自動ナツト
脱着装置。[Claims] 1. A device main body having a guide rail located on the upper mirror and parallel to the seven rung plane, and a station disposed on the guide rail and movable in the circumferential direction or diametrical direction of the upper mirror. , an automatic nut attachment/detachment device comprising an arm for attaching a bolt cleaning device, etc. provided at this station. 2. The automatic nut attachment/detachment device according to claim 1, wherein at least one of a bolt cleaning device, a nut desorption device, and a misalignment detector is attached to the arm. 3. The automatic nut attachment/detachment device according to claim 1 or 2, characterized in that a workbench is attached to the device body. 4. The automatic nut attachment/detachment device according to claim 3, characterized in that a nut holder is attached to the workbench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57204606A JPS5997849A (en) | 1982-11-24 | 1982-11-24 | Automatic nut detachable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57204606A JPS5997849A (en) | 1982-11-24 | 1982-11-24 | Automatic nut detachable device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5997849A true JPS5997849A (en) | 1984-06-05 |
| JPH0372435B2 JPH0372435B2 (en) | 1991-11-18 |
Family
ID=16493241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57204606A Granted JPS5997849A (en) | 1982-11-24 | 1982-11-24 | Automatic nut detachable device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5997849A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6362622A (en) * | 1986-09-01 | 1988-03-18 | Mazda Motor Corp | Assembling method for bolt fastening parts |
| JPS6347872U (en) * | 1986-09-17 | 1988-03-31 | ||
| JPS6397467U (en) * | 1986-12-16 | 1988-06-23 | ||
| JPS63169233A (en) * | 1986-12-29 | 1988-07-13 | Ishikawajima Harima Heavy Ind Co Ltd | Nut carrying device |
| JPH01234657A (en) * | 1988-03-11 | 1989-09-19 | Babcock Hitachi Kk | Opening and closing device for pressure container |
| JP2013542085A (en) * | 2010-10-25 | 2013-11-21 | 大連徳新机電技術工程有限公司 | Single axis yaw electric bolt tightening machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4989997A (en) * | 1972-12-23 | 1974-08-28 | ||
| JPS54109679A (en) * | 1978-01-30 | 1979-08-28 | Framatome Sa | Remote operation screw clamp method and its device |
| JPS54163498A (en) * | 1978-06-16 | 1979-12-26 | Riyouichi Koike | Simultaneous working machine |
| JPS56126584A (en) * | 1980-03-04 | 1981-10-03 | Tokyo Shibaura Electric Co | Turning device for shroud head bolt |
-
1982
- 1982-11-24 JP JP57204606A patent/JPS5997849A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4989997A (en) * | 1972-12-23 | 1974-08-28 | ||
| JPS54109679A (en) * | 1978-01-30 | 1979-08-28 | Framatome Sa | Remote operation screw clamp method and its device |
| JPS54163498A (en) * | 1978-06-16 | 1979-12-26 | Riyouichi Koike | Simultaneous working machine |
| JPS56126584A (en) * | 1980-03-04 | 1981-10-03 | Tokyo Shibaura Electric Co | Turning device for shroud head bolt |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6362622A (en) * | 1986-09-01 | 1988-03-18 | Mazda Motor Corp | Assembling method for bolt fastening parts |
| JPH0364257B2 (en) * | 1986-09-01 | 1991-10-04 | Matsuda Kk | |
| JPS6347872U (en) * | 1986-09-17 | 1988-03-31 | ||
| JPS6397467U (en) * | 1986-12-16 | 1988-06-23 | ||
| JPS63169233A (en) * | 1986-12-29 | 1988-07-13 | Ishikawajima Harima Heavy Ind Co Ltd | Nut carrying device |
| JPH0450145B2 (en) * | 1986-12-29 | 1992-08-13 | Ishikawajima Harima Heavy Ind | |
| JPH01234657A (en) * | 1988-03-11 | 1989-09-19 | Babcock Hitachi Kk | Opening and closing device for pressure container |
| JP2013542085A (en) * | 2010-10-25 | 2013-11-21 | 大連徳新机電技術工程有限公司 | Single axis yaw electric bolt tightening machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0372435B2 (en) | 1991-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH037276B2 (en) | ||
| JP3597570B2 (en) | Reactor dismantling method and apparatus | |
| JPS6122274B2 (en) | ||
| JPS5997849A (en) | Automatic nut detachable device | |
| JPH09159788A (en) | Device and method for remote controlled work in nuclear reactor | |
| JPH10132985A (en) | Method of replacing structure in reactor | |
| EP0146804A2 (en) | Fuel assembly peripheral rod lifting device | |
| JPH06123794A (en) | Device and method for remote incore work | |
| GB1581009A (en) | Apparatus for locating inspection device in a nuclear reactor vessel | |
| JPH1172484A (en) | Flange-related inspection device of atomic reactor | |
| US5087411A (en) | Device and process for underwater recovery and elimination of radioactive waste | |
| JP3101095B2 (en) | Decommissioning method and system for reactor pressure vessel | |
| JPH0531756B2 (en) | ||
| JP3283132B2 (en) | Flaw detector for reactor pressure vessel body flange | |
| JP2809899B2 (en) | Incore tightening nut handling tool | |
| JPS60180777A (en) | Automatic nut detachable device | |
| JP3413752B2 (en) | Jet pump repair method and work platform in boiling water reactor | |
| JP2000284088A (en) | Replacing method for core shroud | |
| JPH0464834B2 (en) | ||
| JP2768839B2 (en) | Incore tightening nut handling tool | |
| JPH0731168Y2 (en) | Flaw detection device for container barrel flange | |
| JPS59142074A (en) | Nut detachable transporter | |
| JPH0735891A (en) | Working unit in reactor core | |
| JPS645174Y2 (en) | ||
| JPH0758343B2 (en) | Reactor internal structure replacement method |