JP6074258B2 - Drawing method for double-ended spindle - Google Patents

Drawing method for double-ended spindle Download PDF

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JP6074258B2
JP6074258B2 JP2012284158A JP2012284158A JP6074258B2 JP 6074258 B2 JP6074258 B2 JP 6074258B2 JP 2012284158 A JP2012284158 A JP 2012284158A JP 2012284158 A JP2012284158 A JP 2012284158A JP 6074258 B2 JP6074258 B2 JP 6074258B2
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double
spindle
flange
ended spindle
valve
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JP2014126155A (en
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太陽 大久保
太陽 大久保
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株式会社大勇フリーズ
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Description

本発明は双口スピンドルの引き抜き工法に関し、特に上水道管、T字管に対してフランジ接合されている双口スピンドル(双口空気弁)を引き抜き、新規な空気弁と交換するための工法に関する。   The present invention relates to a method for pulling out a double-ended spindle, and more particularly to a method for extracting a double-ended spindle (double-ended air valve) that is flange-bonded to a water supply pipe and a T-shaped pipe and replacing it with a new air valve.

従来、上記した目的のために行われる工法は、既設の双口スピンドルの周域を櫓で囲い、包み込んで作業がなされるもので、作業に時間と労力を要し、また、上水道管の止水時間も長時間に亘ってしまうため、環境にも悪影響を及ぼしてしまうものとなっており、要する経費も高額なものとなってしまう。   Conventionally, the construction method performed for the above-mentioned purpose is to work by enclosing the surrounding area of the existing double-ended spindle with a fence and enclosing it, and it takes time and labor for the work. Since the water time lasts for a long time, the environment is adversely affected, and the cost required is high.

出願人は、本願発明について、先行する技術文献を調査したが、格別に本願発明と関連し、類似していると思われる文献は発見できなかった。   Although the applicant investigated the prior art documents regarding the present invention, the applicant could not find any documents that seemed to be related to the invention of the present application and to be similar.

本願発明が解決しようとする問題点は、従来、既設の双口スピンドルを省スペースのセット状況で要領よく行い、作業時間を短縮するとともに、クリーンな状況を保持し、止水時間も少なく、経費も低廉なもので済むという双口スピンドルの引き抜き工法が存在していなかったという点である。   The problem to be solved by the present invention is that the existing double-ended spindle is performed in a space-saving set condition, shortening the work time, maintaining a clean condition, reducing the water stop time, and cost. However, there was no method for pulling out a double-ended spindle, which could be cheap.

上記した目的を達成するために、本発明に係る双口スピンドルの引き抜き工法は、上水道管にフランジ接合されている双口スピンドルの引き抜き工法であって、まず、上水道管側のフランジに抜け防止部材を装着し、双口スピンドルの中心部分を押圧し、ボルト変換し、双口スピンドルの上部フランジをカットしてベルトで左右上部フランジを締付け、ベースフランジを中心部分上面に締付けし、その後、作業用バルブの上方に短管と挿入変換フランジを抜け防止手段で一体化したセットを前記ベースフランジ直上に吊持待機させ、圧引具を双口スピンドルの中心部分上部に連結し、前記セットを下し、注水及び圧検を行ない、前記セットを再度上げ、双口スピンドルの取付ボルトを取り外し、前記セットを下し取り付け、上下の抜け防止部材にレバーブロック(登録商標)を掛け張り、抜け防止部材上段をずらし、前記レバーブロック(登録商標)を操作して双口スピンドルを引き上げ、前記セットの短管から上を撤去し、前記作業用バルブ上に穿孔機を取り付け、その穿孔機に清掃カッターを取り付け、補修弁弁体のカットとフランジ首部の内部洗浄をし、次いで、止水プラグを止水位置まで送り込み固定し、止水し、この短管からなる装置セットの一式と作業用バルブを上昇させ、抜け防止部材下段(24)とスペーサを取り付け後、抜け防止部材上段を取り外し、装置セットの一式と作業用バルブを撤去し、新規短管と新規補修弁を組み付けて挿入し、抜け防止部材下段を外し、止水プラグを新規短管内まで引き上げ、新規補修弁を閉め、止水プラグと新規短管を外し、最終的に新規空気弁を設置することを特徴としている。
In order to achieve the above-described object, the double-ended spindle drawing method according to the present invention is a double-ended spindle drawing method that is flange-joined to the water supply pipe. , Press the center part of the double-ended spindle, convert the bolt, cut the upper flange of the double-ended spindle, tighten the left and right upper flanges with the belt, tighten the base flange to the upper surface of the central part, and then work A set in which the short pipe and the insertion conversion flange are integrated with the prevention means is suspended above the valve and suspended on the base flange and connected to the upper part of the center part of the double-ended spindle, and the set is lowered. Perform water injection and pressure test, raise the set again, remove the mounting bolt of the double-ended spindle, lower the set and install it, and the upper and lower drop prevention parts Slide the lever block (R) and multiplied by tension, strain relief member upper row, the lever block (R) pulling operations to bi-mouth spindle, and remove the top from the short pipe of the set, said working valve Attach a drilling machine to the top, attach a cleaning cutter to the drilling machine, cut the repair valve body and clean the inside of the flange neck, and then send the water stop plug to the water stop position and fix it. The set of equipment consisting of short pipes and the working valve are raised, the lower prevention member lower stage (24) and the spacer are attached, the upper part of the prevention member is removed, the equipment set and the working valve are removed, and a new short insert assembled tube and new repair valve, release the preventing member lower exit, pulling the water stopping plug until a new short tube, close the new repair valve, remove the water stop plugs and new short pipe, most Manner is characterized by installing a new air valve.

また、本発明に係る双口スピンドルの引き抜き工法は、前記した双口スピンドルの中心部分の押圧は抜け防止部材の側面の支持部と押圧部材の固定部材の側面支持部間に締着ボルトを挿通装着することを特徴とし、前記したベースフランジは下方フランジを双口スピンドルの左右の上部フランジ上にボルトにより固着することを特徴とし、前記した作業用バルブの上方における短管は異なる二種のものが連結されていることを特徴とし、前記した作業用バルブ上方の抜け防止部材と、双口スピンドル下方の抜け防止部材間には位置決め支持とガイド用のボルトが設けられることを特徴としている。   Further, in the method of pulling out the double-ended spindle according to the present invention, the fastening bolt is inserted between the support portion on the side surface of the anti-detachment member and the side surface support portion of the fixing member of the pressing member. The base flange described above is characterized in that the lower flange is fixed by bolts on the left and right upper flanges of the double-ended spindle, and the short pipe above the working valve is of two different types. Are connected, and a positioning support and a guide bolt are provided between the above-described removal preventing member above the working valve and the removal preventing member below the double-ended spindle.

本発明に係る双口スピンドルの引き抜き工法は、上記のように構成されている。そのため、作業にともなうセットカバーリングは双口スピンドルのセンター部分のみで済み、工事のために広いスペースを不要とし、確実な作業が行なえる。加えて、周囲環境に悪影響を与えず、クリーンな状況で作業が行なえ、作業も短時間で済み、止水時間も短く、経費も低廉なものとなる。   The double-ended spindle drawing method according to the present invention is configured as described above. Therefore, the set covering for the work is only required at the center part of the double-ended spindle, so that a large space is not required for the construction, and a reliable work can be performed. In addition, the work can be performed in a clean condition without adversely affecting the surrounding environment, the work can be completed in a short time, the water stop time is short, and the cost is low.

対象となる双口スピンドルの正面図である。It is a front view of the target double-ended spindle. フランジに抜け防止部材を装着し、中心部分を押圧した状態を示す図である。It is a figure which shows the state which mounted | wore the flange prevention member to the flange and pressed the center part. 上部フランジをカットする前の状態を示す図である。It is a figure which shows the state before cut | disconnecting an upper flange. ラッシングベルトを装着し、ベースフランジを締付した状態を示す図である。It is a figure which shows the state which mounted | wore with the lashing belt and fastened the base flange. 作業用バルブを含むセットと、圧引具を上部に連結した状態を示す図である。It is a figure which shows the state which connected the set containing a working valve | bulb, and the drawing tool to the upper part. 双口スピンドルの撤去引き抜き状態を示す図である。It is a figure which shows the removal pull-out state of a double-ended spindle. 穿孔機に清掃カッターを取り付けた図である。It is the figure which attached the cleaning cutter to the punch. 止水プラグを装着した図である。It is the figure which attached the water stop plug. セット一式、作業用バルブを上昇させ、スペーサを取り付けた図である。It is the figure which raised the set set, the working valve, and attached the spacer. 短管と新規補修弁を示す図である。It is a figure which shows a short pipe and a new repair valve. 止水プラグと短管を取り外す図である。It is a figure which removes a water stop plug and a short pipe. 新規空気弁の設置状態を示す図である。It is a figure which shows the installation state of a new air valve.

図面として示し、実施例で説明したように構成したことで実現した。   This was realized by configuring as illustrated in the drawings and described in the examples.

次に、本発明の好ましい実施の一例を図面を参照して説明する。図にあって1は双口スピンドルを示している。この双口スピンドル1は上水道管のT字管部分に下端を接続して設置されているもので、その接続管2の上面フランジ2aと本体の下面フランジ1aとは取付ボルト3、3‥によって締結連結されている。双口スピンドル1は左右に空気で上下するボールを収納する収納部を設け、中心部分には上水道管内の空気を外部へ排出もしくは吸入するための空気弁が備えられている。各ボール収納部と空気弁対応部分には各々上部フランジ4、4a、4aが設けられている。   Next, an example of a preferred embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a double-ended spindle. This double-ended spindle 1 is installed with its lower end connected to a T-shaped pipe portion of a water supply pipe. The upper surface flange 2a of the connection pipe 2 and the lower surface flange 1a of the main body are fastened by mounting bolts 3, 3,. It is connected. The double-ended spindle 1 is provided with a storage portion for storing a ball that moves up and down by air on the left and right, and an air valve for discharging or sucking air in the water supply pipe to the outside is provided at the center portion. Upper flanges 4, 4 a, 4 a are provided in the respective ball storage portions and air valve corresponding portions.

この双口スピンドル1を引き抜く作業として、まず、第一には、前記した上面フランジ2a及び下面フランジ1aの清掃をして浄化し、取付ボルト3、3‥を一本づつ交換し、抜け防止部材5を上面フランジ2aの周囲に、側方からネジ5a、5aで固定し取り付ける。この抜け防止部材5の外周にはガイドボルト6、6、挿通部6a、6aが設けられており、ガイドボルト6、6の下端部分が螺合固定される。   As an operation of pulling out the double-ended spindle 1, first, the upper surface flange 2a and the lower surface flange 1a are cleaned and purified, and the mounting bolts 3, 3,. 5 is fixed around the top flange 2a with screws 5a and 5a from the side. Guide bolts 6, 6 and insertion portions 6 a, 6 a are provided on the outer periphery of the removal preventing member 5, and the lower end portions of the guide bolts 6, 6 are screwed and fixed.

また、上方へ延設されたガイドボルト6、6の一部には抜け止め支持部材7が螺合固定され、その抜け止め支持部材7の中央で双口スピンドル1の中央部分、すなわち、空気弁対応部分の上部を押圧部材8によって押圧圧縮し、既設の上部フランジ4、4a、4aの締着ボルト9、9‥及び9a、9aを一本づつ交換する。   Further, a retaining support member 7 is screwed and fixed to a part of the guide bolts 6 and 6 extended upward, and a central portion of the double-ended spindle 1 at the center of the retaining support member 7, that is, an air valve. The upper part of the corresponding part is pressed and compressed by the pressing member 8, and the fastening bolts 9, 9... And 9a, 9a of the existing upper flanges 4, 4a, 4a are replaced one by one.

ここで、上部フランジ4、4a、4aをカットして、左右の上部フランジ4a、4aにラッシングベルト10を上下方向に掛け回して締付ける。また、中央の上部フランジ4にはベースフランジ11を被せ締付け、そのベースフランジ11の下方フランジをキャップボルト12、12‥によって左右の上部フランジ4a、4aに固着する。   Here, the upper flanges 4, 4a, 4a are cut, and the lashing belt 10 is hung around the left and right upper flanges 4a, 4a in the vertical direction and tightened. A base flange 11 is put on the center upper flange 4 and tightened, and a lower flange of the base flange 11 is fixed to the left and right upper flanges 4a, 4a by cap bolts 12, 12,.

次いで、作業用バルブ(適合サイズ)13と第一の短管(適合長)14、第二の短管(適合長)15、挿入変換フランジ(適合サイズ)16及びシャフト17、圧引具18及び抜け防止部材上段19を複数のガイド支持ボルト20、20によって組み付けて装置セットを作製し、この装置セットを簡易クレーンで吊持してベースフランジ11上に待機させ、圧引具18を双口スピンドル1の中央上部に連結する。   Next, the working valve (conforming size) 13 and the first short pipe (conforming length) 14, the second short pipe (conforming length) 15, the insertion conversion flange (conforming size) 16 and the shaft 17, the drawing tool 18 and A device set is prepared by assembling the upper prevention member 19 with a plurality of guide support bolts 20, 20, and the device set is suspended by a simple crane to stand by on the base flange 11, and the draw tool 18 is connected to the double-ended spindle. Connect to the upper center of 1.

続いて、上記した装置セットを下降させ、注水及び圧検を行ない、抜け防止部材19の止着ネジをセットし、適正トルクにて上ナットを締付け、シャフトブレーキを締付けする。ここで装置セットを再度上昇させ、双口スピンドルフランジ取付ボルトを取り外し、装置セットを下降させて取り付けを行なう。   Subsequently, the above-described device set is lowered, water injection and pressure detection are performed, a set screw for the slip-off prevention member 19 is set, the upper nut is tightened with an appropriate torque, and the shaft brake is tightened. Here, the device set is raised again, the double-ended spindle flange mounting bolt is removed, and the device set is lowered to perform installation.

抜け防止部材上段19と抜け防止部材5にレバーブロックを掛け張り、抜け防止部材上段19のネジ、ナットを緩めて、抜け防止部材上段19をずらせる。レバーブロックを操作して、徐々に双口スピンドル1を引き上げ、短管15上部まで完全に納め、作業用バルブ13を閉める。この引き上げ作業中は、常に排水を行ない、濁りを防止する。短管14から上部を撤去し、スピンドルの引き抜きを完了する。   A lever block is stretched between the upper prevention member 19 and the prevention member 5 and the screws and nuts of the upper prevention member 19 are loosened to displace the upper prevention member 19. By operating the lever block, the double-ended spindle 1 is gradually pulled up and completely placed up to the upper part of the short pipe 15 and the working valve 13 is closed. During this lifting work, always drain and prevent turbidity. The upper part is removed from the short tube 14 to complete the extraction of the spindle.

上記双口スピンドル1の引き抜き撤去が完了したら、通常管に穿孔するための穿孔機21を用意し、その作動軸の先端に清掃カッター22を取り付け、その清掃カッター22によって補修弁弁体のカットと、フランジ首部の内部洗浄を行なう。この清掃作業中は常に排水を行ない、内部に塵埃や屑が残ることがないようにする。   When the pulling and removing of the double-ended spindle 1 is completed, a drilling machine 21 for drilling a normal pipe is prepared, and a cleaning cutter 22 is attached to the tip of the operating shaft. Clean the inside of the flange neck. During this cleaning operation, always drain water so that no dust or debris remains inside.

前記した清掃カッター22による清掃作業が済んだら、短管15、短管14及び作業用バルブ13を貫通させて、上水道管の通水を止めるための止水プラグ23を止水位置まで送り込み、拡開させて上水道管の管内壁と当圧接させ止水を行なう。尚、この止水プラグ23の詳細は特願2011−141624号に開示している。この止水の確認はエアー抜きで行う。次いで、抜け防止部材上段19を有効に作用させる。   When the cleaning work by the cleaning cutter 22 is completed, the water stop plug 23 for stopping water flow through the water pipe is passed through the short pipe 15, the short pipe 14, and the work valve 13 to the water stop position. It is opened and pressed against the inner wall of the water pipe to stop the water. The details of the water stop plug 23 are disclosed in Japanese Patent Application No. 2011-141624. Confirm the water stop by removing air. Next, the upper prevention member 19 is effectively operated.

次いで、装置セットの一式と作業用バルブ13を上昇させ、双口スピンドル1の下方に抜け防止部材下段24及びスペーサ25を取り付ける。この取り付けが終了すると、抜け防止部材上段19を取り外し、装置セットの一式と作業用バルブ13を撤去する。   Next, the set of the apparatus set and the working valve 13 are raised, and the lower prevention member lower step 24 and the spacer 25 are attached below the double-ended spindle 1. When this attachment is completed, the upper prevention member 19 is removed, and the set of devices and the work valve 13 are removed.

前記した撤去作業が終了したら、止水プラグ23のシャフトに抜け防止部材下段24及びガイド支持ボルト20、20を介して新規短管27と新規補修弁26を組み付け、挿入する。ここで、ガイド支持ボルト20、20に抜け防止部材上段19を再び取り付け、抜け防止部材下段24を取り外す。   When the above removal work is completed, the new short pipe 27 and the new repair valve 26 are assembled and inserted into the shaft of the water stop plug 23 via the lower prevention member lower stage 24 and the guide support bolts 20 and 20. Here, the upper prevention member 19 is reattached to the guide support bolts 20 and 20, and the lower prevention member lower step 24 is removed.

この後、止水プラグ23を解除して上水道管内の通水を再開する。次いで止水プラグ23を新規短管27内まで引き上げ、その下方に位置する新規補修弁を閉め、止水プラグ23と新規短管27を取り外す。   Then, the water stop plug 23 is cancelled | released and the water flow in a water supply pipe is restarted. Next, the water stop plug 23 is pulled up to the inside of the new short pipe 27, the new repair valve located therebelow is closed, and the water stop plug 23 and the new short pipe 27 are removed.

最終的には、止水プラグ23と新規短管27を取り外して後、新規補修弁26上に新規空気弁28をボルトを用いてフランジ接合し、動作を確認して作業は完了となる。   Finally, after removing the water stop plug 23 and the new short pipe 27, the new air valve 28 is flange-joined on the new repair valve 26 with a bolt, and the operation is confirmed to complete the operation.

1 双口スピンドル
1a 下面フランジ
2 接続管
2a 上面フランジ
3 取付ボルト
4,4a 上部フランジ
5 抜け防止部材
6 ガイドボルト
6a 挿通部
7 抜け止め支持部材
8 押圧部材
9,9a 締着ボルト
10 ラッシングベルト
11 ベースフランジ
12 キャップボルト
13 作業用バルブ
14 第一の短管
15 第二の短管
16 挿入変換フランジ
17 シャフト
18 圧引具
19 抜け防止部材上段
20 ガイド支持ボルト
21 穿孔機
22 清掃カッター
23 止水プラグ
24 抜け防止部材下段
25 スペーサ
26 新規補修弁
27 新規短管
28 新規空気弁
DESCRIPTION OF SYMBOLS 1 Double-ended spindle 1a Lower surface flange 2 Connection pipe 2a Upper surface flange 3 Mounting bolt 4, 4a Upper flange 5 Detachment prevention member 6 Guide bolt 6a Insertion part 7 Retaining prevention support member 8 Press member 9, 9a Fastening bolt 10 Lashing belt 11 Base Flange 12 Cap Bolt 13 Work Valve 14 First Short Pipe 15 Second Short Pipe 16 Insertion Conversion Flange 17 Shaft 18 Pulling Tool 19 Escape Prevention Member Upper Stage 20 Guide Support Bolt 21 Punching Machine 22 Cleaning Cutter 23 Water Stop Plug 24 Lower part of prevention member 25 Spacer 26 New repair valve 27 New short pipe 28 New air valve

Claims (5)

上水道管にフランジ接合されている双口スピンドルの引き抜き工法であって、まず、上水道管側のフランジに抜け防止部材を装着し、双口スピンドルの中心部分を押圧し、ボルト変換し、双口スピンドルの上部フランジをカットしてベルトで左右上部フランジを締付け、ベースフランジを中心部分上面に締付けし、その後、作業用バルブの上方に短管と挿入変換フランジを抜け防止手段で一体化したセットを前記ベースフランジ直上に吊持待機させ、圧引具を双口スピンドルの中心部分上部に連結し、前記セットを下し、注水及び圧検を行ない、前記セットを再度上げ、双口スピンドルの取付ボルトを取り外し、前記セットを下し取り付け、上下の抜け防止部材にレバーブロック(登録商標)を掛け張り、抜け防止部材上段をずらし、前記レバーブロック(登録商標)を操作して双口スピンドルを引き上げ、前記セットの短管から上を撤去し、前記作業用バルブ上に穿孔機を取り付け、その穿孔機に清掃カッターを取り付け、補修弁弁体のカットとフランジ首部の内部洗浄をし、次いで、止水プラグを止水位置まで送り込み固定し、止水し、この短管からなる装置セットの一式と作業用バルブを上昇させ、抜け防止部材下段(24)とスペーサを取り付け後、抜け防止部材上段を取り外し、装置セットの一式と作業用バルブを撤去し、新規短管と新規補修弁を組み付けて挿入し、抜け防止部材下段を外し、止水プラグを新規短管内まで引き上げ、新規補修弁を閉め、止水プラグと新規短管を外し、最終的に新規空気弁を設置することを特徴とする双口スピンドルの引き抜き工法。 This is a method of pulling out a double-ended spindle that is flanged to a water supply pipe. First, a slip-off prevention member is attached to the flange on the water supply pipe side, the center part of the double-ended spindle is pressed, converted into bolts, and a double-ended spindle. The upper flange is cut with a belt, the left and right upper flanges are tightened, the base flange is tightened to the upper surface of the center portion, and then the short pipe and the insertion conversion flange are integrated with the prevention means above the working valve. Suspend and stand directly above the base flange, connect the drawing tool to the upper center part of the double-ended spindle, lower the set, perform water injection and pressure test, raise the set again, and install the double-ended spindle mounting bolt. shifting removal, installation beat the set, tension over the upper and lower fall-off preventing member to the lever block (registered trademark), the preventing member upper omission, the Le Over block (R) pulling operations to bi-mouth spindle, and remove the top from the short pipe of the set, a drilling machine mounted on said working valve, the cleaning cutter attached to the drilling machine, the repair valve valve body the internal cleaning of the cut and the flange neck of, then fed to secure the water stopping plug up water stop position and the water stop increases the working valve and a set of device set of this short pipe, off preventing member lower (24) After attaching the spacer, remove the upper part of the removal prevention member , remove the set of equipment and the working valve, insert the new short pipe and the new repair valve, insert it, remove the lower part of the removal prevention member , and stop the water. Pulling up the plug into the new short pipe, closing the new repair valve, removing the water stop plug and the new short pipe, and finally installing a new air valve, a double-ended spindle drawing method. 前記した双口スピンドルの中心部分の押圧は抜け防止部材の側面の支持部と押圧部材の固定部材の側面支持部間に締着ボルトを挿通装着することを特徴とする請求項1に記載の双口スピンドルの引き抜き工法。   2. The double bolt according to claim 1, wherein the pressing of the central portion of the double-ended spindle is performed by inserting a fastening bolt between the support portion on the side surface of the slip-off preventing member and the side surface support portion of the fixing member of the pressing member. Mouth spindle drawing method. 前記したベースフランジは下方フランジを双口スピンドルの左右の上部フランジ上にボルトにより固着することを特徴とする請求項1に記載の双口スピンドルの引き抜き工法。   2. The method of pulling out a double-ended spindle according to claim 1, wherein the base flange has a lower flange fixed to the left and right upper flanges of the double-ended spindle with bolts. 前記した作業用バルブの上方における短管は異なる二種のものが連結されていることを特徴とする請求項1に記載の双口スピンドルの引き抜き工法。   2. The double-ended spindle drawing method according to claim 1, wherein two different types of short pipes above the working valve are connected. 前記した作業用バルブ上方の抜け防止部材と、双口スピンドル下方の抜け防止部材間には位置決め支持とガイド用のボルトが設けられることを特徴とする請求項1または4に記載の双口スピンドルの引き抜き工法。   5. The double-ended spindle according to claim 1, wherein a positioning support and a guide bolt are provided between the above-described anti-extraction member above the working valve and the anti-extraction member below the double-ended spindle. Drawing method.
JP2012284158A 2012-12-27 2012-12-27 Drawing method for double-ended spindle Active JP6074258B2 (en)

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