JP2604455B2 - Existing pipe non-cutting cloth replacement equipment - Google Patents
Existing pipe non-cutting cloth replacement equipmentInfo
- Publication number
- JP2604455B2 JP2604455B2 JP63332131A JP33213188A JP2604455B2 JP 2604455 B2 JP2604455 B2 JP 2604455B2 JP 63332131 A JP63332131 A JP 63332131A JP 33213188 A JP33213188 A JP 33213188A JP 2604455 B2 JP2604455 B2 JP 2604455B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- pipe
- existing pipe
- new
- tubular body
- 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 - Fee Related
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
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、
下水道など）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。Description: TECHNICAL FIELD The present invention relates to an existing pipe (for example, a water pipe,
The present invention relates to an apparatus for laying a new pipe without digging.
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ッキ
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 a new pipe having a diameter larger than that of an existing pipe is laid, a laying apparatus as shown in FIG. 5 has been provided. That is, a crushing head 54 for crushing an existing pipe 55 is attached to a dummy pipe 52 having the same diameter as the new pipe 51 via an adapter 53, and a rear end of the dummy pipe 52 is connected to a propulsion jack disposed in a starting pit 56.
It is something to push with 57. Accordingly, the existing pipe 55 is crushed by the crushing head 54 and remains in the ground, and the new pipes 51 are sequentially pushed into the ground from behind the dummy pipe 52 in accordance with the propulsion of 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、推進ジヤッキ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。According to the conventional configuration described above, when the propulsion jack 57 is used for propulsion alone, a large axial compression force acts on the new pipe 51 when the buried ground is hard or the propulsion distance is long, so that the new pipe 51 is propelled. There was a problem that the pipe 51 buckled and deformed, and the joint between the new pipes 51 was 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。Therefore, an object of the present invention is to provide a non-cutting cloth replacement device for existing pipes that can solve the above-mentioned problems.
課題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ッキを設けたもので
ある。Means for Solving the Problems In order to solve the above-mentioned problems, an unexcavated existing pipe replacement apparatus of the present invention is an apparatus for laying a new pipe having a larger diameter than an existing pipe buried underground. The tubular body having the same outer diameter as the pipe is divided into two parts, a front tubular body and a rear tubular body slidably engaged with each other in the front-rear direction. A crushing blade for crushing the existing pipe is attached, and an extrusion jack for advancing the front cylindrical body with respect to the rear cylindrical body is provided between the front cylindrical body and the existing pipe.
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
て推進ジヤッ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ッ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。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。In the above configuration, when the new pipe is pushed in for a certain distance and the pressing force of the propulsion jack approaches the allowable compressive force of the new pipe, the front tubular body is pushed against the rear tubular body by the extrusion jack in the tubular body. New pipes will be laid while extruding forward to crush existing pipes. As a result, the force required for breaking 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。Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
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5b、5cの逃げ用の溝4bが形成されている。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
と短刃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５内に入り込むように
されている。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ッキ（油圧ジヤッキ）７が配置
されている。なお、押出ジヤッキ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６の破砕屑を後方に排出できるようにされてい
る。In FIGS. 1 and 2, reference numeral 1 denotes a tubular body having the same outer diameter as the new pipe 2, which is divided into two parts in the front and rear directions and slidably engaged with each other in the front and rear direction. 3 and a rear tubular body 4. The front end 4a of the rear cylindrical body 4 has a slightly smaller diameter so as to fit inside the front cylindrical body 3, and the front end 4a has a crushing blade 5 described later.
An escape groove 4b for the blade portions 5b and 5c is formed. In the front cylindrical body 3, a long blade 5b is formed around a rod 5a.
Blade 5 in which a pair of short blades 5c are attached in a cross shape
Is arranged. The distal end of the rod 5a projects forward from the front cylindrical body 3 so as to enter the existing pipe 5. An extruding jack (hydraulic jack) 7 for pushing the front tubular body 3 forward is disposed in the rear tubular body 4. The support member 8 of the extrusion jack 7 is formed, for example, in a cross shape so that the crushed debris of the existing pipe 6 taken in from the front tubular body 3 can be discharged backward.
次に、新管の布設作業を第３図に基づいて説明する。 Next, the work of laying a new pipe will be described with reference to FIG.
まず、発進坑９から既設管６内に破砕刃５を挿入した
後、後部筒状体４を介して推進ジヤッキ（油圧ジヤッ
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。そして、新管２がある程
度の距離押し込まれて推進ジヤッキ10の推力が新管２の
許容圧縮力に近づくと、今後は筒状体１内の押出ジヤッ
キ７により前部筒状体３だけを押し出し、その後押出ジ
ヤッキ７を縮めるとともに推進ジヤッキ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ッキ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。次に、第２実施例を第４図に基づき説明す
る。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。First, after the crushing blade 5 is inserted into the existing pipe 6 from the starting shaft 9, the entire cylindrical body 1 is propelled forward by the propulsion jack (hydraulic jack) 10 through the rear cylindrical body 4, and the new pipe is sequentially formed. Insert 2. When the new pipe 2 is pushed in for a certain distance and the thrust of the propulsion jack 10 approaches the allowable compressive force of the new pipe 2, only the front tubular body 3 is pushed out by the extruded jack 7 in the tubular body 1 in the future. , Then shrink the extrusion jack 7 and use the propulsion jack 10 to
And then lay them down. Thus, the cylindrical body 1
In order to crush the existing pipe 6 with the extrusion jack 7 at the front end of
No force is applied to the new pipe 2 when crushing the existing pipe 6. Therefore, deformation and damage to the joint due to buckling of the new pipe 2 do not occur. Next, a second embodiment will be described with reference to FIG. In this method, after the existing pipe is crushed, the crushed debris is left in the ground.
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ッキ24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 constituted by the front cylindrical body 22 and the rear cylindrical body 23, and the front cylindrical body 22 is pushed into the cylindrical body 21 by pushing the front cylindrical body 22 forward with respect to the rear cylindrical body 23. Arrange the jack 24,
Further, a crushing head 26 for crushing existing pipes is held at the front end of the front cylindrical body 22 via an adapter 25 having a truncated cone shape.
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、押出ジヤッキ24が作動させられて破砕ヘッド26前
方にが押し出される。Also in this case, when the new pipe is pushed in a certain distance, the extruding jack 24 is actuated to push the crushing head 26 forward.
発明の効果 以上のように本発明の構成によると、押出ジヤッキに
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。Effect of the Invention As described above, according to the configuration of the present invention, the front tubular body can be pushed forward with respect to the rear tubular body by the extrusion jack, so that it is necessary to crush the existing pipe when propelling a new pipe. Since no excessive force is applied and no excessive force acts on the new pipe, it is possible to prevent deformation of the new pipe due to buckling and damage to the joint.
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……筒状体、２……新管、３……前部筒状体、４……
後部筒状体、５……破砕刃、６……既設管、７……押出
ジヤッキ。1 to 3 show a first embodiment of the present invention. FIG. 1 is a sectional view of a main part, FIG. 2 is a view taken along the line AA of FIG. 1, and FIG. 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 for explaining a schematic configuration of a conventional example. 1 ... tubular body, 2 ... new tube, 3 ... front tubular body, 4 ...
Rear tubular body, 5: Crushing blade, 6: Existing pipe, 7: Extrusion jack.
Claims (1)
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。An apparatus for laying a new pipe having a diameter larger than that of an existing pipe buried in the ground, wherein a tubular body having the same outer diameter as the new pipe is divided into two front and rear parts and slid in the front-rear direction. A front cylindrical body and a rear cylindrical body freely engaged with each other, and a crushing blade for crushing an existing pipe is attached to the front cylindrical body,
A non-cutting cloth replacement device for an existing pipe, wherein an extrusion jack for advancing the front cylindrical body with respect to the rear cylindrical body is provided between the front cylindrical body and the existing pipe.
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 JPH02176094A (en) | 1990-07-09 |
| JP2604455B2 true 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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482404A (en) * | 1993-07-27 | 1996-01-09 | Tenbusch, Ii; Albert A. | Underground pipe replacement technique |
| CN102889427B (en) * | 2012-10-18 | 2015-06-17 | 北京隆科兴非开挖工程股份有限公司 | 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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02176094A (en) | 1990-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |