JPH02176094A - Non-excavation replacement device for ready-laid pipe - Google Patents
Non-excavation replacement device for ready-laid pipeInfo
- Publication number
- JPH02176094A JPH02176094A JP63332131A JP33213188A JPH02176094A JP H02176094 A JPH02176094 A JP H02176094A JP 63332131 A JP63332131 A JP 63332131A JP 33213188 A JP33213188 A JP 33213188A JP H02176094 A JPH02176094 A JP H02176094A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- pipe
- jack
- new
- ready
- 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
- 238000009412 basement excavation Methods 0.000 title 1
- 238000009434 installation Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 description 7
- 238000013459 approach Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、地中に埋設された既設管（例えば水道管、下
水管など）開削せずに新管に布設替えするための装置に
関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for replacing existing pipes buried underground (for example, water pipes, sewage pipes, etc.) with new pipes without excavating them. .
従来の技術
従来、既設管より大径の新管を布設する場合、第５図に
示すような布設替え装置が設けられていた。即ち、新管
５１と同一径のダミー管５２にアダプター５３を介して
既設管５５破砕用の破砕ヘッド５４を取り付けるととも
に、このダミー管５２の後端を発進坑５６に配置された
推進ジヤツキ５７で押し込むようにしたものである。し
たがって、既設管５５は破砕ヘッド５４により破砕され
て地中に残された状態になるとともに、ダミー管５２の
推進に応じて新管５１が順次ダミー管５２の後から地中
内に押し込まれる。2. Description of the Related Art Conventionally, when installing a new pipe with a larger diameter than an existing pipe, a re-installation device as shown in FIG. 5 has been provided. That is, a crushing head 54 for crushing the existing pipe 55 is attached to a dummy pipe 52 having the same diameter as the new pipe 51 via an adapter 53, and the rear end of this dummy pipe 52 is connected to a propulsion jack 57 disposed in the starting shaft 56. It was designed to be pushed in. Therefore, the existing pipe 55 is crushed by the crushing head 54 and left underground, and as the dummy pipe 52 is propelled, the new pipe 51 is sequentially pushed into the ground from behind the dummy pipe 52.
発明が解決しようとする課題
上記従来の構成によると、推進ジヤツキ５７だけで推進
させると、埋設地盤が硬い場合や推進距離が長い場合に
、新管５１に大きな軸方向圧縮力が作用して新管５１が
座屈して変形したり、また新管５１同士の継手部が破損
するという課題があった。Problems to be Solved by the Invention According to the conventional configuration described above, if the propulsion jack 57 alone is used for propulsion, a large axial compressive force will act on the new pipe 51 when the buried ground is hard or the propulsion distance is long. There were problems in that the tubes 51 buckled and deformed, and the joints between the new tubes 51 were damaged.
そこで、本発明は上記課題を解消し得る既設管の非開削
布設替え装置を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a trenchless installation replacement device for existing pipes that can solve the above-mentioned problems.
課研を解決するための手段
上記課題を解決するため、本発明の既設管の非開削布設
替え装置は、地中に埋設された既設管より大径の新管を
布設する装置であって、新管と同じ外径の筒状体を前後
に二分割するとともに互いに前後方向で摺動自在に係合
された前部筒状体と後部筒状体とで構成し、上記前部筒
状体に既設管を破砕する破砕刃を取り付けるとともに、
上記前部筒状体と既設管との間に前部筒状体を後部筒状
体に対して前進させる押出ジヤツキを設けたものである
。Means for Solving the Problems In order to solve the above-mentioned problems, the trenchless installation replacement device for existing pipes of the present invention is a device for installing new pipes with a larger diameter than existing pipes buried underground, A cylindrical body having the same outer diameter as the new pipe is divided into two parts in the front and back, and the front cylindrical body and the rear cylindrical body are slidably engaged with each other in the front and rear directions. In addition to installing a crushing blade to crush existing pipes,
A push-out jack is provided between the front cylindrical body and the existing pipe to advance the front cylindrical body relative to the rear cylindrical body.
作用
上記構成において、新管がある程度の距離押し込まれて
推進ジヤツキによる押圧力が新管の許容圧縮力に近づく
と、筒状体内の押出ジヤツキにより前部筒状体を後部筒
状体に対して前方に押し出して既設管を破砕しながら新
管を布設していく。Effect In the above configuration, when the new tube is pushed a certain distance and the pushing force by the propulsion jack approaches the allowable compression force of the new tube, the extrusion jack inside the cylindrical body pushes the front cylindrical body against the rear cylindrical body. The new pipe is laid by pushing it forward and crushing the existing pipe.
これにより、既設管の破砕に必要な力を新管に加えるこ
とは無い。As a result, the force necessary to crush the existing pipe is not applied to the new pipe.
実施例
以下、本発明の第１実施例を第１図〜第３図に基づき説
明する。EXAMPLE A first example of the present invention will be described below with reference to FIGS. 1 to 3.
第１図および第２図において、１は新管２と同一の外径
を有する筒状体で、前後に二分割されるとともに互いに
前後方向で摺動自在に係合された前部筒状体３と後部筒
状体４とから構成されている。なお、後部筒状体４の前
端部４ａは前部筒状体３に内嵌するように少し小さな径
にされるとともに、この前端部４ａには後述する破砕刃
５の刃部５ｂ１５ｃの逃げ用の溝４ｂが形成されている
。In FIGS. 1 and 2, 1 is a cylindrical body having the same outer diameter as the new pipe 2, and the front cylindrical body is divided into two parts in the front and rear, and is slidably engaged with each other in the front and rear directions. 3 and a rear cylindrical body 4. The front end 4a of the rear cylindrical body 4 is made to have a slightly smaller diameter so as to fit inside the front cylindrical body 3, and the front end 4a has a hole for escape of the blade part 5b15c of the crushing blade 5, which will be described later. A groove 4b is formed.
そして、上記前部筒状体３内には、棒状体５ａの周囲に
長刃５ｂと短刀５ｃとが一対づつ十字状に取り付けられ
た破砕刃５が配置されている。なお、棒状体５ａの先端
は前部筒状体３より前方に突出されて、既設管θ内に入
り込むようにされている。In the front cylindrical body 3, a crushing blade 5 is arranged, in which a pair of long blades 5b and a pair of short knives 5c are attached in a cross shape around a rod-shaped body 5a. The tip of the rod-shaped body 5a is projected forward from the front cylindrical body 3 and inserted into the existing pipe θ.
また、後部筒状体４内には前部筒状体３を前方に押し出
す押出ジヤツキ（油圧ジヤツキ）７が配置されている。Further, a push-out jack (hydraulic jack) 7 for pushing the front tubular body 3 forward is arranged inside the rear tubular body 4 .
なお、押出ジヤツキ７の支持部材８は、例えば十字状に
されており、前部筒状体３から取り込まれた既設管θの
破砕屑を後方に排出できるようにされている。The support member 8 of the extrusion jack 7 is, for example, in the shape of a cross, and is configured to discharge crushed debris of the existing pipe θ taken in from the front cylindrical body 3 to the rear.
次に、新管の布設作業を第３図に基づいて説明する。Next, the installation work of the new pipe will be explained based on FIG.
まず、発進坑９から既設管θ内に破砕刃５を挿入した後
、後部筒状体４を介して推進ジヤツキ（油圧ジヤツキ）
１０により筒状体１全体を前方に推進させるるとともに
順次新管２を挿入して行く。First, after inserting the crushing blade 5 into the existing pipe θ from the starting hole 9, a propulsion jack (hydraulic jack) is inserted through the rear cylindrical body 4.
10, the entire cylindrical body 1 is propelled forward, and new pipes 2 are successively inserted.
そして、新管２がある程度の距離押し込まれて推進ジヤ
ツキ１０の推力が新管２の許容圧縮力に近づくと、今度
は筒状体１内の押出ジヤツキ７により前部筒状体３だけ
を押し出し、その後押出ジヤツキ７を縮めるとともに推
進ジヤツキ１０により新管２を順次押し込んで布設して
行く。このように、筒状体１の前端部の押出ジヤツキ７
で既設管６を破砕するため、新管２には既設管６破砕時
の力が加わることは無い。したがって、新管２の座屈に
よる変形および継手部の損傷が生じない。When the new tube 2 is pushed in a certain distance and the thrust of the propulsion jack 10 approaches the allowable compression force of the new tube 2, only the front tube 3 is pushed out by the extrusion jack 7 inside the tube 1. Thereafter, the push-out jack 7 is retracted, and the new pipes 2 are successively pushed in and installed using the propulsion jack 10. In this way, the extrusion jack 7 at the front end of the cylindrical body 1
Since the existing pipe 6 is crushed in this step, the force at the time of crushing the existing pipe 6 is not applied to the new pipe 2. Therefore, deformation due to buckling of the new pipe 2 and damage to the joint portion do not occur.
次に、第２実施例を第４図に基づき説明する。Next, a second embodiment will be explained based on FIG. 4.
このものは既設管を破砕した後、その破砕屑を地中に残
すようにしたものである。This method is designed to crush existing pipes and leave the crushed debris underground.
即ち、筒状体２１を前部筒状体２２と後部筒状体２３と
で構成するとともに、筒状体２１内に前部筒状体２２を
後部筒状体２３に対して前方に押し出す押出ジヤツキ２
４を配置し、かつ前部筒状体２２の前端に円錐台形状の
アダプター２５を介して既設管破砕用の破砕ヘッド２６
を保持させたものである。That is, the cylindrical body 21 is configured with a front cylindrical body 22 and a rear cylindrical body 23, and the front cylindrical body 22 is pushed forward into the cylindrical body 21 with respect to the rear cylindrical body 23. Jyatsuki 2
A crushing head 26 for crushing existing pipes is installed at the front end of the front cylindrical body 22 via a truncated conical adapter 25.
is maintained.
この場合も、やはり新管がある程度の距離押し込まれる
と、押出ジヤツキ２４が作動させられて破砕ヘッド２６
前方にか押し出される。In this case, too, once the new pipe has been pushed a certain distance, the extrusion jack 24 is actuated and the crushing head 26
being pushed forward.
発明の効果
以上のように本発明の構成によると、押出ジヤツキによ
り前部筒状体を後部筒状体に対して前方に押し出すこと
ができるので、新管の推進時に、既設管の破砕に必要な
力が加わらず、したがって新管に無理な力が作用しない
ため、新管の座屈による変形および継手部の損傷が生じ
るのを防止することができる。Effects of the Invention As described above, according to the configuration of the present invention, the front cylindrical body can be pushed forward with respect to the rear cylindrical body by the extrusion jack, so that when a new pipe is propelled, it is possible to crush the existing pipe. Since no excessive force is applied to the new pipe, deformation of the new pipe due to buckling and damage to the joint can be prevented.
第１図〜第３図は本発明の第１実施例を示すもので、第
１図は要部断面図、第２図は第１図のＡ−Ａ矢視図、第
３図は布設作業を説明する側面図、第４図は本発明の第
２実施例を示す要部断面図、第５図は従来例の概略構成
を説明する全体側面図である。
１・Φ拳筒状体、２・拳・新管、３・ｅ・前部筒状体、
４・曇・後部筒状体、５−・・破砕刃、６・・・既設管
、７φΦ・押出ジヤツキ。Figures 1 to 3 show a first embodiment of the present invention. Figure 1 is a sectional view of the main part, Figure 2 is a view taken along the line A-A in Figure 1, and Figure 3 is a construction work. FIG. 4 is a sectional view of a main part showing a second embodiment of the present invention, and FIG. 5 is an overall side view showing a schematic configuration of a conventional example. 1. Φ fist cylindrical body, 2. fist new tube, 3. e. front cylindrical body,
4. Cloudy rear cylindrical body, 5-. Crushing blade, 6. Existing pipe, 7φΦ extrusion jack.
Claims (1)
装置であって、新管と同じ外径の筒状体を前後に二分割
するとともに互いに前後方向で摺動自在に係合された前
部筒状体と後部筒状体とで構成し、上記前部筒状体に既
設管を破砕する破砕刃を取り付けるとともに、上記前部
筒状体と既設管との間に前部筒状体を後部筒状体に対し
て前進させる押出ジャッキを設けたことを特徴とする既
設管の非開削布設替え装置。1. A device for laying a new pipe with a larger diameter than the existing pipe buried underground, which divides a cylindrical body with the same outer diameter as the new pipe into two parts in the front and back, and connects them so that they can slide in the front and rear directions. It consists of a front cylindrical body and a rear cylindrical body that are joined together, and a crushing blade for crushing the existing pipe is attached to the front cylindrical body, and a front cylindrical body is attached between the front cylindrical body and the existing pipe. A non-cutting installation replacement device for existing pipes, characterized in that a push-out jack is provided for advancing a partial cylindrical body relative to a rear cylindrical body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63332131A JP2604455B2 (en) | 1988-12-27 | 1988-12-27 | Existing pipe non-cutting cloth replacement equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63332131A JP2604455B2 (en) | 1988-12-27 | 1988-12-27 | Existing pipe non-cutting cloth replacement equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02176094A true JPH02176094A (en) | 1990-07-09 |
| JP2604455B2 JP2604455B2 (en) | 1997-04-30 |
Family
ID=18251500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63332131A Expired - Fee Related JP2604455B2 (en) | 1988-12-27 | 1988-12-27 | Existing pipe non-cutting cloth replacement equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2604455B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6588983B1 (en) * | 1993-07-27 | 2003-07-08 | Tenbusch, Ii Albert A. | Trenchless pipe replacement apparatus and technique |
| CN102889427A (en) * | 2012-10-18 | 2013-01-23 | 北京隆科兴非开挖工程有限公司 | Device, system and method for repairing underground pipeline of trenchless pneumatic cracking pipe |
| CN108194758A (en) * | 2018-02-27 | 2018-06-22 | 广东管博管道技术科技有限公司 | A kind of pipeline is quiet to draw fragmentation to repair structure |
-
1988
- 1988-12-27 JP JP63332131A patent/JP2604455B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6588983B1 (en) * | 1993-07-27 | 2003-07-08 | Tenbusch, Ii Albert A. | Trenchless pipe replacement apparatus and technique |
| CN102889427A (en) * | 2012-10-18 | 2013-01-23 | 北京隆科兴非开挖工程有限公司 | Device, system and method for repairing underground pipeline of trenchless pneumatic cracking pipe |
| CN108194758A (en) * | 2018-02-27 | 2018-06-22 | 广东管博管道技术科技有限公司 | A kind of pipeline is quiet to draw fragmentation to repair structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2604455B2 (en) | 1997-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |