JPH0712958Y2 - Control rod drive shaft handling tool - Google Patents

Control rod drive shaft handling tool

Info

Publication number
JPH0712958Y2
JPH0712958Y2 JP1988088482U JP8848288U JPH0712958Y2 JP H0712958 Y2 JPH0712958 Y2 JP H0712958Y2 JP 1988088482 U JP1988088482 U JP 1988088482U JP 8848288 U JP8848288 U JP 8848288U JP H0712958 Y2 JPH0712958 Y2 JP H0712958Y2
Authority
JP
Japan
Prior art keywords
drive shaft
handling tool
control rod
shaft
gripper
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
Application number
JP1988088482U
Other languages
Japanese (ja)
Other versions
JPH029898U (en
Inventor
誓児 矢口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP1988088482U priority Critical patent/JPH0712958Y2/en
Publication of JPH029898U publication Critical patent/JPH029898U/ja
Application granted granted Critical
Publication of JPH0712958Y2 publication Critical patent/JPH0712958Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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  • Manipulator (AREA)

Description

【考案の詳細な説明】 [産業上の利用分野] 本考案は、原子力発電プラントの原子炉で用いられる制
御棒駆動軸の取扱工具に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a tool for handling a control rod drive shaft used in a nuclear reactor of a nuclear power plant.

[従来の技術] 周知のように、原子炉においては、その炉心を制御する
ために、炉心に対して挿入及び引き抜き可能な種々の制
御棒が用いられている。このように制御棒を駆動するた
めに、炉心を収容した原子炉容器の蓋体には、制御棒ク
ラスタに結合される制御棒駆動軸(以下、駆動軸とい
う)と、該駆動軸を収容する圧力ハウジング等とをそれ
ぞれ有する複数の制御棒駆動装置が垂設されている。
[Prior Art] As is well known, in a nuclear reactor, various control rods that can be inserted into and withdrawn from the core are used to control the core. In order to drive the control rods in this way, the control rod drive shaft (hereinafter referred to as the drive shaft) coupled to the control rod cluster and the drive shaft are housed in the lid of the reactor vessel housing the core. A plurality of control rod drives each having a pressure housing and the like are suspended.

通常の定期検査時には、蓋体が原子炉容器から取り外さ
れる際に、制御棒駆動装置の圧力ハウジングも除去され
るので、駆動軸の周辺の空間は開放されている。従来、
このような状態下で駆動軸のハンドリング(吊り上げ、
吊り降ろし)や、制御棒クラスタとのラッチ及びアンラ
ッチ等の作業を行うための取扱工具としては、第6図に
概要を示すように、2種類のシリンダ01、03を有し、一
方のシリンダ01に関連した機構で駆動軸本体02を把持し
てハンドリングし、他方のシリンダ03に関連した機構で
駆動軸の取外し軸04にある被操作部05を介して駆動軸本
体02の下端にあるグリッパ(図示せず)を操作し、駆動
軸と制御棒クラスタとのラッチ及びアンラッチとを行う
ものが提供されていた。
During normal regular inspection, the pressure housing of the control rod drive is also removed when the lid is removed from the reactor vessel, so the space around the drive shaft is open. Conventionally,
Under such conditions, drive shaft handling (lifting,
As a handling tool for performing work such as lifting and lowering) and latching and unlatching with the control rod cluster, two types of cylinders 01 and 03 are provided, as shown in FIG. The drive shaft main body 02 is gripped and handled by a mechanism related to (1), and the gripper (at the lower end of the drive shaft main body 02 via the operated part 05 on the drive shaft removal shaft 04 by the mechanism related to the other cylinder 03). (Not shown) to provide latching and unlatching of the drive shaft and control rod cluster.

この取扱工具は、上述のように圧力ハウジングが存在せ
ず、そのため駆動軸の周辺が開放され広いスペースが有
る場合には、所望の作業を遂行することができる。
As described above, this handling tool can perform a desired work when the pressure housing is not present and therefore the periphery of the drive shaft is open and there is a large space.

[考案が解決しようとする課題] しかし、蓋体を取り外す前に駆動軸のハンドリングや、
制御棒クラスタとのラッチ及びアンラッチ等を行いたい
場合には、圧力ハウジングが未だ蓋体に装着されている
ので、取扱工具を圧力ハウジングの上端から挿入しなけ
ればならない。ところが、従来の取扱工具は、駆動源と
して独立した2種類のシリンダ01、03を有するために、
工具径が比較的に大きくならざるを得ず、蓋体取り外し
前の作業には不適であった。即ち、第5図において、符
号06は制御棒駆動装置の圧力ハウジングであるが、従来
の取扱工具は、その内部に挿入しうる程コンパクトには
構成されていなかった。
[Problems to be solved by the invention] However, before removing the lid, handling of the drive shaft,
If it is desired to latch and unlatch with the control rod cluster, the handling tool must be inserted from the top of the pressure housing since the pressure housing is still attached to the lid. However, since the conventional handling tool has two independent types of cylinders 01 and 03 as drive sources,
The tool diameter had to be relatively large, making it unsuitable for work before removing the lid. That is, in FIG. 5, reference numeral 06 is a pressure housing of the control rod drive device, but the conventional handling tool is not so compact that it can be inserted therein.

従って、駆動軸が圧力ハウジング内に在る場合でも、同
圧力ハウジング内に挿入され所望の作業を行うことがで
きる制御棒駆動軸の取扱工具の出現が望まれていた。
Therefore, even if the drive shaft is inside the pressure housing, it has been desired to develop a tool for handling the control rod drive shaft that can be inserted into the pressure housing to perform a desired work.

[課題を解決するための手段] 本考案は、このような必要性から創出されたもので、本
考案に従って構成された場合、制御棒駆動軸の取扱工具
は、筒状枠体と、上端に把手を備え、該把手の操作によ
り該筒状枠体に関して軸方向に移動可能に前記筒状枠体
内に貫装された鉛直操作棒と、該鉛直操作棒の下端に連
結されたグリツパと、前記鉛直操作棒に軸方向に形成さ
れたカム溝と、前記筒状枠体から延びて前記カム溝に嵌
合する突起とを有している。
[Means for Solving the Problem] The present invention was created from such a need, and when configured according to the present invention, the control rod drive shaft handling tool has a cylindrical frame and an upper end. A vertical operation rod which is provided in the cylindrical frame body so as to be axially movable with respect to the cylindrical frame body by an operation of the handle; and a gripper connected to a lower end of the vertical operation rod, The vertical operation rod has a cam groove formed in the axial direction, and a projection extending from the cylindrical frame body and fitted into the cam groove.

[作用] 本考案の取扱工具を使用するに際しては、そのグリッパ
が駆動軸の取外し軸の上端にあるように位置付けてか
ら、取扱工具を下降させて、鉛直操作棒に設けられたグ
リッパを取外し軸との把持状態にすると共に、グリッパ
の一部(インサート)を取外し軸の上端に当接させてお
く。
[Operation] When using the handling tool of the present invention, position the gripper so that it is at the upper end of the removal shaft of the drive shaft, then lower the handling tool to remove the gripper provided on the vertical operation rod. The gripper and the gripper are removed, and part of the gripper (insert) is removed and brought into contact with the upper end of the shaft.

この段階で把手即ち駆動ナットを回すと、グリツパが取
り外し軸に当接して駆動軸方向への鉛直操作棒の移動を
阻止しているため、且つ筒状枠体側にある突起が鉛直操
作棒に形成されたカム溝に嵌合して鉛直操作棒の回転を
阻止しているために、鉛直操作棒を同一位置に保持した
まま、筒状枠体が駆動軸本体の上端に当接するまで軸方
向に移動する[第2図の(a)]。これにより取扱工具
は駆動軸に取り付けられ、別の工具でこの取扱工具を吊
り上げ又は吊り降ろせば、駆動軸のハンドルリングを行
うことができる。
When the handle or drive nut is turned at this stage, the gripper comes into contact with the removal shaft to prevent the vertical operating rod from moving in the direction of the drive axis, and a protrusion on the cylindrical frame side is formed on the vertical operating rod. Since the vertical operation rod is prevented from rotating by fitting in the cam groove, the axial movement is continued until the tubular frame contacts the upper end of the drive shaft main body while holding the vertical operation rod at the same position. It moves [(a) in FIG. 2]. As a result, the handling tool is attached to the drive shaft, and the handle ring of the drive shaft can be performed by lifting or lowering the handling tool with another tool.

更に駆動ナットを回すと、今後は筒状枠体が駆動軸本体
の上端に当接し軸方向の移動を拘束されているので、鉛
直操作棒が軸方向の上方に移動する。この時、鉛直操作
棒のグリッパが取外し軸の被操作部を把持しているため
に、取外し軸も同方向に移動される[第2図の
(b)]。その結果、制御棒クラスタに係合していた駆
動軸本体の下端のグリッパが取外し軸によりアンラッチ
されることになる。ラッチは上述と実質的に逆に操作を
行えばよい。
When the drive nut is further rotated, the vertical operation rod is moved upward in the axial direction because the tubular frame body comes into contact with the upper end of the drive shaft main body and the movement in the axial direction is restricted in the future. At this time, since the gripper of the vertical operation rod grips the operated portion of the removal shaft, the removal shaft is also moved in the same direction [(b) of FIG. 2]. As a result, the gripper at the lower end of the drive shaft main body, which was engaged with the control rod cluster, is unlatched by the removal shaft. The latch may be operated substantially in reverse.

かくして、取扱工具の鉛直操作棒に設けられた1つのグ
リッパが駆動軸の取外し軸の被操作部を把持した状態
で、駆動軸のハンドリングや、駆動軸と制御棒クラスタ
とのラッチ及びアンラッチ作業を行われる。
Thus, with one gripper provided on the vertical operation rod of the handling tool gripping the operated portion of the removal shaft of the drive shaft, handling of the drive shaft and latching and unlatching of the drive shaft and control rod cluster are performed. Done.

[実施例] 次に、本考案の好適な実施例について添付図面を参照し
て詳細に説明するが、図中、同一符号は同一又は対応部
分を示すものとする。
[Embodiment] Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding portions.

第1図は、本考案による取扱工具の好適な実施例を駆動
軸への取外直前の状態、即ち第5図に示した圧力ハウジ
ング内に挿入された状態で示しており、この状態におい
ては、実際には図の右側が軸方向の下方もしくは下側、
左側が軸方向の上方もしくは上側であるため、以下の記
載では、取扱工具の各部の実際の配列方向に基づいて説
明することとする。
FIG. 1 shows a preferred embodiment of the handling tool according to the present invention in a state immediately before being detached from the drive shaft, that is, in a state of being inserted into the pressure housing shown in FIG. Actually, the right side of the figure is below or below the axial direction,
Since the left side is the upper side or the upper side in the axial direction, the following description will be made based on the actual arrangement direction of each part of the handling tool.

本考案の取扱工具は、下側にガイドスリーブ3、上側に
ポール4を有し、筒状の枠体を形成するように互いに螺
合したこれ等のガイドスリーブ3及びポールは、螺合部
において止めねじ13により回り止めがなされている。ポ
ール4の上端部に溶接のような適宜の手段により取着さ
れた端栓17には、止めねじ16によりブッシュ11が内部に
組み込まれた駆動ナット5が嵌合している。駆動ナット
5は、端栓17に螺入する止めねじ15により軸方向の動き
を拘束されているが、円周方向には自由である。
The handling tool of the present invention has a guide sleeve 3 on the lower side and a pole 4 on the upper side, and these guide sleeves 3 and poles screwed together so as to form a tubular frame body, at the screwing portion. The set screw 13 prevents rotation. A drive nut 5 having a bush 11 incorporated therein by a set screw 16 is fitted to an end plug 17 attached to the upper end of the pole 4 by an appropriate means such as welding. The drive nut 5 is restricted in its axial movement by a set screw 15 screwed into an end plug 17, but is free in the circumferential direction.

筒状枠体の内部を上下に延びている鉛直操作棒即ちシャ
フト6は、上端部に雄ねじ部6aを有し、該雄ねじ部6aが
ブッシュ11に形成された雌ねじ部11aに螺合している。
また、この雄ねじ部6aには、ブッシュ11よりも更に上側
にロックナット10が螺合している。ロックナット10はポ
ール4に対するシャフト位置の固定のために設けられて
いる。シヤフト6には軸方向に延びるカム溝もしくはキ
ー溝6bが形成されており、止めねじ14のような突起が端
栓17を半径方向に貫通して該キー溝6bに係合することに
より、シャフト6の回転が拘束されている。
A vertical operation rod or shaft 6 extending vertically inside the cylindrical frame has a male screw portion 6a at the upper end, and the male screw portion 6a is screwed into a female screw portion 11a formed on the bush 11. .
Further, the lock nut 10 is screwed to the male screw portion 6a above the bush 11. The lock nut 10 is provided for fixing the shaft position with respect to the pole 4. The shaft 6 is formed with a cam groove or a key groove 6b extending in the axial direction, and a projection such as a set screw 14 penetrates the end plug 17 in the radial direction to engage with the key groove 6b. 6 rotations are constrained.

従って、駆動ナット5をどちらかの方向に回転させる
と、後から詳しく述べるように、ブッシュ11を介してシ
ャフト6又は筒状枠体(ポール4及びガイドスリーブ
3)が軸方向に駆動される。
Therefore, when the drive nut 5 is rotated in either direction, the shaft 6 or the tubular frame (the pole 4 and the guide sleeve 3) is axially driven via the bush 11 as described later in detail.

一方、シャフト6の下端部には、そこに画成された雌ね
じ部6cにインサート8の雌ねじ部8aが螺合することによ
り、グリッパ7が取り付けられている。即ち、インサー
ト8は、小径の前記雄ねじ部8aと大径部8bとからなり、
大径部8bをグリッパ7内に配設させた状態で、小径の雄
ねじ部8aがグリッパ7の円板状基端部7a(第3図、第4
図参照)に形成された開口7bを貫通し、ナット9を経て
雌ねじ部6cに螺合している。12はインサート8の回り止
めのためのピンである。
On the other hand, at the lower end of the shaft 6, the gripper 7 is attached by screwing the female screw portion 8a of the insert 8 into the female screw portion 6c defined therein. That is, the insert 8 is composed of the male screw portion 8a having a small diameter and the large diameter portion 8b,
With the large-diameter portion 8b arranged in the gripper 7, the small-diameter male screw portion 8a is connected to the disc-shaped base end portion 7a of the gripper 7 (see FIGS. 3 and 4).
(See the drawing) and penetrates the opening 7b formed therein, and is screwed into the female screw portion 6c via the nut 9. 12 is a pin for preventing the insert 8 from rotating.

グリッパ7の詳細を示す第3図の(a)、(b)及び
(c)から明らかなように、円板状の基端部7aからは円
周方向に実質的に等間隔で4本の弾性フィンガもしくは
指状部材7cが軸方向に延びており、各指状部材7cの下端
にはテーパ面7dを有する爪部7eが形成されている。
As is clear from (a), (b) and (c) of FIG. 3 showing the details of the gripper 7, four disc-shaped base end portions 7a are arranged at substantially equal intervals in the circumferential direction. Elastic fingers or finger-shaped members 7c extend in the axial direction, and claw portions 7e having tapered surfaces 7d are formed at the lower ends of the finger-shaped members 7c.

次に、上述した構成を有する本考案の取扱工具の動作に
ついて説明する。ガイドスリーブ3をグリッパ7の指状
部材7cよりも上方に移動させた状態で、取扱工具を駆動
軸1の本体1aの上端にセットし、取外し軸2の被操作部
2aに向かって押し下げる。この時、指状部材7cは弾性を
有するために第4図に点線で示すように拡開し、指状部
材7cの先端に形成された爪部7eが取外し軸2の被操作部
2aにある溝状凹部2bに係合すると、第1図に示すよう
に、取扱工具が駆動軸1を把持した状態となる。その
後、取扱工具はインサート8の下端が被操作部2aの上端
に達するまで若干下降する。
Next, the operation of the handling tool of the present invention having the above configuration will be described. With the guide sleeve 3 moved above the finger-shaped member 7c of the gripper 7, the handling tool is set on the upper end of the main body 1a of the drive shaft 1, and the operated portion of the removal shaft 2 is operated.
Push down towards 2a. At this time, since the finger-shaped member 7c has elasticity, the finger-shaped member 7c expands as shown by the dotted line in FIG. 4, and the claw portion 7e formed at the tip of the finger-shaped member 7c removes the operated portion of the removal shaft 2.
When engaged with the groove-shaped recess 2b in 2a, the handling tool is in a state of gripping the drive shaft 1 as shown in FIG. After that, the handling tool is slightly lowered until the lower end of the insert 8 reaches the upper end of the operated portion 2a.

この状態で駆動ナット5を回すと、インサート8と被操
作部2aとの係合によりシャフト6の下動が阻止されてい
るので、シャフト6は下降することができず、逆に、駆
動ナット5と共にポール4及びガイドスリーブ3が第2
図の(a)に示すように駆動軸本体1aの頂端に当接する
まで所定距離L1下降し、駆動軸に対する取扱工具の取り
付けが完了する。
When the drive nut 5 is rotated in this state, the downward movement of the shaft 6 is prevented by the engagement between the insert 8 and the operated portion 2a, so the shaft 6 cannot be lowered, and conversely, the drive nut 5 is not moved. Along with the pole 4 and the guide sleeve 3
As shown in (a) of the figure, a predetermined distance L 1 is lowered until it comes into contact with the top end of the drive shaft main body 1a, and the attachment of the handling tool to the drive shaft is completed.

取扱工具により駆動軸1をハンドリングする際、駆動軸
1の自重は指状部材7cにより受けることになるが、この
時、指状部材7cの爪部7eにテーパ面7dが形成されている
ために、指状部材7cには軸方向荷重と半径方向荷重とが
作用する。この半径方向荷重は、取扱工具の前記セット
時と同様に指状部材7cを拡開しようとする力であり、グ
リッパ7は、指状部材7cを取り囲むガイドスリーブ3に
よつて確実に把持状態に保持される。
When the drive shaft 1 is handled by the handling tool, the weight of the drive shaft 1 is received by the finger-shaped member 7c. At this time, the claw portion 7e of the finger-shaped member 7c has the tapered surface 7d. An axial load and a radial load act on the finger member 7c. This radial load is a force for expanding the finger-shaped member 7c as in the case of setting the handling tool, and the gripper 7 is securely held by the guide sleeve 3 surrounding the finger-shaped member 7c. Retained.

図示しないが、制御棒クラスタとその駆動軸とは周知の
継手もしくはグリッパによって結合されており、この継
手では、制御棒クラスタに対する駆動軸の係脱もしくは
ラッチ、アンラッチを行うには、駆動軸本体1aに対して
取外し軸2を所定距離上昇させた状態で駆動軸本体1aを
昇降させることが必要である。
Although not shown, the control rod cluster and its drive shaft are connected by a known joint or gripper, and in this joint, in order to engage / disengage, latch, or unlatch the drive shaft with respect to the control rod cluster, the drive shaft main body 1a is used. On the other hand, it is necessary to raise and lower the drive shaft main body 1a while raising the detaching shaft 2 by a predetermined distance.

そのため、第2図の(a)に示す状態から更に駆動ナッ
ト5を回すと、ガイドスリーブ3の下端が駆動軸本体1a
の頂端に当接しているために、駆動ナット5、ガイドス
リーブ3及びポール4は下降できず、シャフト6が上昇
する。第2図の(b)に示す状態までシャフト6と共に
グリッパ7を上昇させることにより、被操作部2aは駆動
軸本体1aに対して所定距離L2上昇することになり、シャ
フト6の先端を利用して駆動軸本体を上昇又は下降させ
ることにより、駆動軸と制御棒クラスタとのラツチ及び
アンラッチが実施できる。
Therefore, when the drive nut 5 is further rotated from the state shown in FIG. 2 (a), the lower end of the guide sleeve 3 is moved to the drive shaft body 1a.
The drive nut 5, the guide sleeve 3, and the pawl 4 cannot descend because they are in contact with the top end of the shaft 6, and the shaft 6 rises. By raising the gripper 7 together with the shaft 6 to the state shown in FIG. 2B, the operated portion 2a is raised by a predetermined distance L 2 with respect to the drive shaft main body 1a, and the tip of the shaft 6 is used. By raising or lowering the drive shaft main body, latching and unlatching of the drive shaft and the control rod cluster can be performed.

[考案の効果] 以上のように、本考案の取扱工具は、上端に把手を有し
下端にグリッパを有する鉛直操作棒を筒状枠体内に収容
した簡単且つコンパクトな構成であるため、圧力ハウジ
ング内に容易に挿入され、狭隘な作業空間においても駆
動軸のハンドリングや、制御棒クラスタに対するラッチ
及びアンラッチを行うことができる。
[Advantage of the Invention] As described above, the handling tool of the present invention has a simple and compact structure in which the vertical operation rod having the handle at the upper end and the gripper at the lower end is housed in the cylindrical frame body, so that the pressure housing is provided. It can be easily inserted into the inside, and can handle the drive shaft and latch and unlatch the control rod cluster even in a narrow working space.

【図面の簡単な説明】[Brief description of drawings]

第1図は、本考案による取扱工具の一実施例を示す断面
図、第2図の(a)及び(b)は、第1図の取扱工具の
駆動軸ハンドリング状態及び制御棒ラッチ、アンラッチ
状態を示す断面図、第3図の(a)、(b)及び(c)
は、第1図の取扱工具の鉛直操作棒に設けられたグリッ
パの端面図、断面図及びIIIC−IIIC線断面図、第4図
は、駆動軸の取外し軸にある被操作部を把持するグリッ
パの作用説明図、第5図は、圧力ハウジングと、その中
の駆動軸上端部とを示す拡大断面図、第6図は、従来の
取扱工具を示す概略断面図である。 3…ガイドスリーブ(筒状枠体) 4…ポール(筒状枠体) 5…駆動ナット(把手) 6…シャフト(鉛直操作棒) 6b…キー溝(カム溝) 7…グリッパ 14…止めねじ(突起)
FIG. 1 is a sectional view showing an embodiment of a handling tool according to the present invention, and FIGS. 2 (a) and 2 (b) are drive shaft handling states and control rod latching and unlatching states of the handling tool of FIG. 3 is a cross-sectional view of FIG. 3, (a), (b) and (c) of FIG.
FIG. 4 is an end view, a sectional view and a sectional view taken along the line IIIC-IIIC of the gripper provided on the vertical operating rod of the handling tool shown in FIG. 1, and FIG. 5 is an enlarged sectional view showing the pressure housing and the upper end portion of the drive shaft therein, and FIG. 6 is a schematic sectional view showing a conventional handling tool. 3 ... Guide sleeve (cylindrical frame) 4 ... Pole (cylindrical frame) 5 ... Drive nut (handle) 6 ... Shaft (vertical operation rod) 6b ... Key groove (cam groove) 7 ... Gripper 14 ... Set screw ( Protrusion)

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】筒状枠体と、上端に把手を備え、該把手の
操作により前記筒状枠体に関して軸方向に相対的に移動
可能に前記筒状枠体内に貫装された鉛直操作棒と、該鉛
直操作棒の下端に連結されたグリッパと、前記鉛直操作
棒に軸方向に形成されたカム溝と、前記筒状枠体から延
びて前記カム溝に嵌合する突起とを有する、制御棒駆動
軸の取扱工具。
1. A vertical operating rod provided with a tubular frame and a handle at an upper end thereof, the vertical operating rod being inserted into the tubular frame so as to be relatively movable in the axial direction with respect to the tubular frame by the operation of the handle. A gripper connected to the lower end of the vertical operation rod, a cam groove formed in the vertical operation rod in the axial direction, and a projection extending from the tubular frame and fitted into the cam groove. Control rod drive shaft handling tool.
JP1988088482U 1988-07-05 1988-07-05 Control rod drive shaft handling tool Expired - Lifetime JPH0712958Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988088482U JPH0712958Y2 (en) 1988-07-05 1988-07-05 Control rod drive shaft handling tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988088482U JPH0712958Y2 (en) 1988-07-05 1988-07-05 Control rod drive shaft handling tool

Publications (2)

Publication Number Publication Date
JPH029898U JPH029898U (en) 1990-01-22
JPH0712958Y2 true JPH0712958Y2 (en) 1995-03-29

Family

ID=31313041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988088482U Expired - Lifetime JPH0712958Y2 (en) 1988-07-05 1988-07-05 Control rod drive shaft handling tool

Country Status (1)

Country Link
JP (1) JPH0712958Y2 (en)

Also Published As

Publication number Publication date
JPH029898U (en) 1990-01-22

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