JP2516442B2 - Pipe burying device - Google Patents

Pipe burying device

Info

Publication number
JP2516442B2
JP2516442B2 JP2009512A JP951290A JP2516442B2 JP 2516442 B2 JP2516442 B2 JP 2516442B2 JP 2009512 A JP2009512 A JP 2009512A JP 951290 A JP951290 A JP 951290A JP 2516442 B2 JP2516442 B2 JP 2516442B2
Authority
JP
Japan
Prior art keywords
pavement
pipe
road
soil
bridge
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
JP2009512A
Other languages
Japanese (ja)
Other versions
JPH03217502A (en
Inventor
俊夫 杉崎
博一 大塚
勇武 鈴木
治 荒田
利昭 河合
桂樹 大野
文彦 岩下
紀美夫 佐藤
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.)
Nippon Kokan Koji KK
Original Assignee
Nippon Kokan Koji KK
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 Nippon Kokan Koji KK filed Critical Nippon Kokan Koji KK
Priority to JP2009512A priority Critical patent/JP2516442B2/en
Publication of JPH03217502A publication Critical patent/JPH03217502A/en
Application granted granted Critical
Publication of JP2516442B2 publication Critical patent/JP2516442B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Road Repair (AREA)

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、例えば石油導管やガス管・水道管,通信
用ケーブルを通す管等を埋設する管埋設装置、特に管埋
設時の作業性の向上に関するものである。
The present invention relates to a pipe burying device for burying, for example, a petroleum pipe, a gas pipe / water pipe, a pipe through which a communication cable is passed, etc. It is about improvement.

[従来の技術] 石油導管やガス管,水道管等を地中に埋設するとき
は、石油導管等を保護するために地表から一定の深さ以
上の所に埋設する必要がある。例えば石油導管を市街地
以外の道路の下に埋設するときは、地表から石油導管ま
では1.2〜1.5m以上必要であり、市街地道路の下に埋設
する場合は1.8m以上必要であることが石油パイプライン
技術基準で定められている。
[Prior Art] When burying oil pipes, gas pipes, water pipes, etc. in the ground, it is necessary to bury them at a certain depth or more from the ground surface to protect the oil pipes. For example, when burying an oil pipeline under a road other than an urban area, it is necessary to have 1.2 to 1.5 m or more from the surface to the oil pipeline, and when burying under an urban road, 1.8 m or more is required. Specified in line technical standards.

このような、石油導管やガス管等を道路の下に埋設す
るときは、舗装にカッターを入れた後に舗装をこわし、
こわした舗装を積み出し撤去してから路盤の掘削を行な
い、山留めと排水を行なう。その後掘削した溝内に埋設
する管を配設し、管の周辺部を良質な材料で十分締固め
ることにより、管に作用する側圧を大きくして鉛直土圧
の軽減を図るために埋戻しを行ない、その後舗装を行な
うという一連の施工順序で管理設を行なっている。
When burying such oil pipes and gas pipes under the road, break the pavement after inserting the cutter into the pavement,
The damaged pavement will be unloaded and removed before excavation of the roadbed, earth retaining and drainage. After that, a pipe to be buried is placed in the excavated trench, and the peripheral portion of the pipe is sufficiently compacted with a good quality material to increase the lateral pressure acting on the pipe and refill it in order to reduce the vertical earth pressure. The management is carried out in a series of construction order, in which it is carried out and then paved.

また、ガス管等を道路の下に埋設する場合において
は、路面交通の安全を確保するために、起業者および施
工者は道路管理者等の指示するところに従い、必要な標
板等を設置し工事による交通の危険や渋滞等を防止し、
特に歩行者が安全に通行しうるような措置をとることが
必要とされている。
In addition, when burying gas pipes etc. under the road, in order to ensure the safety of road surface traffic, the entrepreneur and installer should install the necessary signboards, etc., as instructed by the road administrator. Preventing traffic hazards and traffic congestion due to construction,
In particular, it is necessary to take measures so that pedestrians can pass safely.

[発明が解決しようとする課題] 上記のように道路の下に管を埋設する場合、交通の渋
滞を防止し、路面交通の安全を図るために、舗装カット
から管埋設,再舗装までの一連の施工を昼または夜の当
日中に行なっている。
[Problems to be Solved by the Invention] When a pipe is buried under a road as described above, a series of steps from pavement cutting to pipe embedding and re-paving is carried out in order to prevent traffic congestion and to secure road traffic. Is being done during the day or night.

しかしながら、管を埋設する場合にはどうしても交通
を制限せざるを得ないという短所がある。
However, when burying pipes, there is the disadvantage that traffic must be restricted.

また、交通の制限区間を適切に短くするために作業長
を短くする必要があり、管埋設の作業性が悪いという短
所があった。
In addition, it is necessary to shorten the working length in order to appropriately shorten the restricted section of traffic, which is a disadvantage of poor workability in burying pipes.

この発明はかかる短所を解決するためになされたもの
であり、管埋設時における交通渋滞を解消し、連続して
管埋設を行なうことができる管埋設装置を得ることを目
的とするものである。
The present invention has been made to solve such disadvantages, and an object of the present invention is to solve the traffic congestion at the time of burying a pipe and to obtain a pipe burying device capable of continuously burying a pipe.

[課題を解決するための手段] この発明に係る管埋設装置は、複数台の台車上に搭載
され、両端部が路面に当接し、施工速度に応じて移動す
る道路橋と、該道路橋の橋梁下部に装着された舗装破砕
・排出装置と掘削装置と脱水・改良装置と配管装置及び
舗装装置とを有し、舗装破砕・排出装置は道路橋の進行
方向先端部の橋梁下部に設けられ、舗装カットと舗装こ
わしを行う破砕手段と、破砕した舗装を排出する排出手
段を有し、掘削装置は舗装破砕・排出装置に連設され路
盤材と路床土をそれぞれ掘削する掘削手段と、掘削した
土砂を搬送する搬送手段を有し、脱水・改良装置は搬送
手段に連設され搬送手段で搬送された土砂を脱水し、脱
水された土砂を路盤材と路床土に分離して改良し、配管
装置は掘削装置に連設され埋設する管を保管する管保管
手段と、保管された管を掘削部に搬送し設置する管搬送
手段と、設置された管を接合する接合手段を有し、埋戻
し装置は配管装置に連設され上記脱水・改良装置から送
られる路床土と路盤材により掘削部を埋設する土砂供給
手段と、埋設した土砂を転圧する転圧手段を有し、舗装
装置は埋戻し装置に連設され、転圧手段で転圧された土
砂の上面を舗装することを特徴とする。
[Means for Solving the Problems] A pipe burying device according to the present invention is mounted on a plurality of trolleys, both ends of which are in contact with a road surface and which moves according to a construction speed, and a road bridge of the road bridge. It has a pavement crushing / discharging device attached to the lower part of the bridge, an excavating device, a dehydration / improving device, a piping device and a pavement device, and the pavement crushing / discharging device is provided at the lower part of the bridge at the tip of the road bridge in the traveling direction. It has crushing means for cutting and breaking pavement, and discharging means for discharging crushed pavement. The dewatering / improving device is connected to the conveying means to dewater the earth and sand conveyed by the conveying means, and separates the dehydrated earth and sand into roadbed material and subgrade soil for improvement. The piping equipment is connected to the drilling equipment and the pipes to be buried are stored. And a pipe transporting means for transporting and installing the stored pipe to the excavation section, and a joining means for joining the installed pipe, and the backfilling device is connected to the piping device and dehydration / improvement is performed. It has a sediment supply means for burying the excavated part with roadbed soil and roadbed material sent from the equipment, and a compaction means for compacting the embedded soil, and the pavement equipment is connected to the backfilling equipment and rolled by the compaction means. It is characterized by paving the upper surface of the pressed soil.

[作用] この発明においては、管を埋設する道路上に複数台の
台車上に搭載され両端部が路面に当接する道路橋を設置
して、道路橋を交通に開放しながら、道路橋の橋梁下部
に連設された各装置を作動させて管理設の一連の施工工
程を連続して行なう。
[Operation] In the present invention, a road bridge that is mounted on a plurality of trucks and has both ends abutting the road surface is installed on the road where the pipe is buried, and the bridge of the road bridge is opened while the road bridge is open to traffic. A series of construction steps for management is performed continuously by activating each device installed in the lower part.

また、道路橋を移動しながら管を埋設することによ
り、連続して管を埋設する。
In addition, the pipes will be continuously buried by burying the pipes while moving the road bridge.

[実施例] 第1図はこの発明の一実施例を示す断面図、第2図は第
1図のA−A断面図である。図において、1はカードレ
ール2を有する道路橋であり、道路橋1は中央部1aが水
平に形成され、前後部に傾斜面1bを有する。この道路橋
1は複数台の台車3上に搭載され、傾斜面1bの端部が道
路4に当接しながら道路4上を移動できるように構成さ
れている。
[Embodiment] FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA in FIG. In the figure, 1 is a road bridge having a card rail 2. The road bridge 1 has a central portion 1a formed horizontally and inclined surfaces 1b at the front and rear portions. This road bridge 1 is mounted on a plurality of carriages 3 and is configured so that it can move on the road 4 while the end of the inclined surface 1b abuts on the road 4.

5は道路橋1の橋梁下部に設けられた舗装破砕・排出
装置であり、舗装破砕・排出装置5は道路4の舗装カッ
トと舗装こわしを行なう破砕手段6と破砕されたアスフ
ァルトと舗装の下に敷いてある路床砂を分離してアスフ
ァルトを排出する排出手段7を有する。
Reference numeral 5 is a pavement crushing / discharging device provided at the lower part of the bridge of the road bridge 1. It has a discharging means 7 for separating the laid roadbed sand and discharging the asphalt.

8は舗装破砕・排出装置5の後段に設けられた掘削装
置であり、掘削装置8は使用しないときは橋梁と並行に
固定され、使用時に垂直方向に配置される複数個の掘削
手段9と掘削された土砂を搬送する搬送手段10とを有す
る。
Reference numeral 8 denotes an excavation device provided in the latter stage of the pavement crushing / discharging device 5. The excavation device 8 is fixed in parallel with the bridge when not in use, and excavation means 9 and a plurality of excavation devices 9 arranged vertically in use. And a transporting means (10) for transporting the deposited earth and sand.

11は脱水・改良装置であり、脱水・改良装置11は掘削
された土砂を脱水し、かつ路盤材と路床土に分離し改良
する。
Dehydration / improvement device 11 dehydrates the excavated earth and sand and separates it into roadbed material and roadbed soil for improvement.

12は掘削装置8の後段に設けられた配管装置であり、
配管装置12は埋設する管13を保管する保管手段14と、保
管されている管13を溝15に搬送し設置する管搬送手段16
と、溝15に設置された管13aと先に埋設された管13bとを
接合する溶接機17を有する。
12 is a piping device provided in the latter stage of the excavator 8.
The piping device 12 is a storage means 14 for storing the pipe 13 to be buried, and a pipe transfer means 16 for transferring the stored pipe 13 to the groove 15 and installing it.
And a welding machine 17 for joining the pipe 13a installed in the groove 15 and the pipe 13b previously embedded.

18は埋戻し装置であり、埋戻し装置18は脱水・改良装
置11に取付けられ、複数段の土砂供給口19a,19bを配管
装置12の後段に有する土砂供給手段19と、土砂供給手段
19の後段に設けられた転圧手段20を備えている。
18 is a backfilling device, the backfilling device 18 is attached to the dehydration / improvement device 11, and has a plurality of stages of sediment supply ports 19a and 19b at the rear stage of the piping device 12, and a sediment supply means.
It is provided with a compaction means 20 provided at the rear stage of 19.

21は埋戻し装置18の後段に設けられた舗装装置であ
り、舗装装置21はアスファルトを保管し散布するアスフ
ァルト散布手段22と転圧手段23を有する。
Reference numeral 21 is a pavement device provided in the subsequent stage of the backfill device 18, and the pavement device 21 has an asphalt spraying means 22 for storing and spraying asphalt and a rolling compaction means 23.

次に上記のように構成された管埋設装置により、例え
ばガス管を道路4の下に埋設する場合の動作を説明す
る。
Next, an operation of burying a gas pipe under the road 4 by using the pipe burying device configured as described above will be described.

まず、道路橋1を施工場所の道路4上に移動して設置
する。その後、道路橋1を交通に開放する。このため、
道路4の下に管13を埋設しているときにも道路橋1上を
自動車24や歩行者が通行することができ、路面交通の安
全を確保することができる。
First, the road bridge 1 is moved and installed on the road 4 at the construction site. After that, the road bridge 1 is opened to traffic. For this reason,
Even when the pipe 13 is buried under the road 4, automobiles 24 and pedestrians can pass on the road bridge 1, and road safety can be secured.

この状態で、道路橋1を施工速度に応じて矢印25で示
すように前方に移動しながら、まず舗装破砕・排出装置
5を駆動し、破砕手段6で道路4の舗装にカッターを入
れてから舗装こわしを行なう。この舗装こわしにより破
砕されたアスファルトと舗装の下に敷いてある路床砂を
排出手段7で分離しながら排出する。排出されたアスフ
ァルトは自動車等に積み上げて撤去し、路床砂は埋戻し
に再使用するため脱水・改良装置11に搬送する。
In this state, the pavement crushing / discharging device 5 is first driven while moving the road bridge 1 forward as indicated by the arrow 25 according to the construction speed, and the crushing means 6 inserts a cutter into the pavement of the road 4 and then Perform pavement breaking. The asphalt crushed by this pavement breaking and the roadbed sand laid under the pavement are discharged while being separated by the discharging means 7. The discharged asphalt is piled up in an automobile or the like and removed, and the roadbed sand is transported to the dehydration / improvement device 11 for reuse in backfilling.

次に舗装こわしが行なわれた路盤の路盤材と路床土を
掘削装置8の複数の掘削手段9で掘削し、山留めを行な
いながら掘削した土砂を搬送手段10で脱水・改良装置11
に送り、第2図に示すように所定の深さの溝15を形成す
る。また、溝15内に湧き水がある場合は不図示の排出手
段で排水しながら、配管装置12の管保管手段14に保管さ
れている管13を管搬送手段16で1本ずつ搬送して溝15の
所定位置に設置する。そして、搬送された管13aと先に
設置,埋設されている管13bを溶接機17で接合する。
Next, the roadbed material and the subgrade soil of the roadbed on which the pavement has been broken are excavated by a plurality of excavation means 9 of the excavation equipment 8, and the earth and sand excavated while carrying out mountain retaining is dehydrated and improved by the transportation means 10 11
Then, as shown in FIG. 2, a groove 15 having a predetermined depth is formed. If there is spring water in the groove 15, the pipes 13 stored in the pipe storage means 14 of the piping device 12 are transferred one by one by the pipe transfer means 16 while being drained by the discharge means (not shown). Install it in the specified position. Then, the conveyed pipe 13a and the pipe 13b installed and buried previously are joined by the welding machine 17.

一方、掘削された土砂は再利用するため脱水・改良装
置11で脱水され、路盤材と路床土に分離されてからそれ
ぞれ改良される。この分離,改良された路盤材と路床土
は埋戻し装置18の土砂供給手段19に搬送される。搬送さ
れた路床土と路盤材は、それぞれ土砂供給手段19の土砂
供給口19a,19bから管13a,13bが設置された溝15内にまき
出される。そして、まき出された土砂を転圧手段20で十
分締固めて埋戻しを行なう。
On the other hand, the excavated soil is reused for dehydration by the dehydration / improvement device 11 and separated into the roadbed material and the roadbed soil, which are then respectively improved. The separated and improved roadbed material and roadbed soil are conveyed to the earth and sand supply means 19 of the backfill device 18. The conveyed roadbed soil and roadbed material are unwound from the earth and sand supply ports 19a and 19b of the earth and sand supply means 19 into the grooves 15 in which the pipes 13a and 13b are installed. Then, the unloaded soil is sufficiently compacted by the compaction means 20 to be backfilled.

この埋戻した路盤上に舗装装置21のアスファルト散布
手段22からアスファルトコンクリートを散布し、その後
転圧手段23で転圧して道路を完成させる。
The asphalt concrete is sprayed from the asphalt spraying means 22 of the pavement device 21 on the backfilled roadbed, and then the compaction means 23 compacts the asphalt concrete to complete the road.

このように、道路橋1を所定速度で移動しながら管13
を埋設するから、一連の施工順序を連続して行なうこと
ができる。また道路橋1を移動することにより、掘削,
配管,埋戻し等の各施工工程をそれぞれ連続して行なう
ことができるから、管13を連続して埋設することがで
き、短時間で長距離の埋設工事を行なうことができる。
In this way, while moving the road bridge 1 at a predetermined speed, the pipe 13
Since it is buried, a series of construction orders can be continuously performed. By moving the road bridge 1, excavation,
Since each construction process such as piping and backfilling can be performed continuously, the pipe 13 can be continuously buried, and long-distance burying work can be performed in a short time.

[発明の効果] この発明は以上説明したように、道路の下に管を埋設
するときに、埋設する道路上に複数台の台車に搭載され
両端部が路面に当接する道路橋を移動し、道路橋を交通
に開放しながら道路橋の橋梁下部に連設された各装置を
作動させて、管埋設の一連の施工を行なうようにしたの
で、管埋設工事による交通の危険や渋滞を防止し、路面
交通の安全を確保することができる。
[Effect of the Invention] As described above, according to the present invention, when a pipe is buried under a road, a road bridge that is mounted on a plurality of trucks and has both ends abutting the road surface is moved on the buried road, While opening the road bridge to traffic, each device installed under the bridge of the road bridge was operated to perform a series of pipe burying work, thus preventing traffic danger and congestion due to pipe burying work. , It is possible to ensure the safety of road traffic.

また、道路橋の橋梁下部に設けた各装置により一連の
順序にしたがって管埋設工事を連続して行なうから、掘
削した土砂を利用して埋戻しを行なうことができ、管埋
設の費用を低減することができる。
In addition, since the pipe burial work is continuously performed by each device provided under the bridge of the road bridge according to a series of sequence, it is possible to backfill by using the excavated earth and sand, which reduces the cost of pipe burial. be able to.

また、道路橋を移動しながら管を連続接合して埋設す
ることができるから、管埋設工事の作業能率を向上させ
ることができる。
Further, since the pipes can be continuously joined and buried while moving on the road bridge, the work efficiency of the pipe burying work can be improved.

さらに、道路橋の両側面を覆うことにより、掘削時等
の騒音を防止することができる。
Furthermore, by covering both sides of the road bridge, noise during excavation can be prevented.

また、管埋設に使用する一連の装置が工程順にしたが
って道路橋に設置されているから、管埋設工事の自動化
を簡単に図ることもできる。
Further, since a series of devices used for burying pipes are installed on the road bridge according to the order of steps, it is possible to easily automate the pipe burying work.

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

第1図はこの発明の実施例を示す断面図、第2図は第1
図のA−A断面図である。 1……道路橋、3……台車、4……道路、5……舗装破
砕・排出装置、6……破砕手段、7……排出手段、8…
…掘削装置、9……掘削手段、10……搬送手段、11……
脱水・改良装置、12……配管装置、13,13a,13b……管、
14……保管手段、15……溝、16……管搬送手段、17……
溶接機、18……埋戻し装置、19a,19b……土砂供給口、2
0……転圧手段、21……舗装装置、22……アスファルト
散布手段、23……転圧手段。
FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG.
It is an AA sectional view of a figure. 1 ... Road bridge, 3 ... Truck, 4 ... Road, 5 ... Pavement crushing / discharging device, 6 ... Crushing means, 7 ... Discharging means, 8 ...
… Drilling equipment, 9 …… Drilling means, 10 …… Transporting means, 11 ……
Dehydration / improvement equipment, 12 …… Piping equipment, 13,13a, 13b …… Pipes,
14 …… Storage means, 15 …… Groove, 16 …… Pipe transport means, 17 ……
Welding machine, 18 ... Backfilling device, 19a, 19b ... Sediment supply port, 2
0 …… Rolling means, 21 …… Pavement equipment, 22 …… Asphalt spraying means, 23 …… Rolling means.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 大野 桂樹 神奈川県横浜市磯子区洋光台5―7―6 ―102号 (72)発明者 岩下 文彦 東京都三鷹市深大寺1―7―2 (72)発明者 佐藤 紀美夫 神奈川県藤沢市柄沢566―4 (56)参考文献 特開 昭63−130803(JP,A) ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Keiki Ohno 5-7-6-102 Yokodai, Isogo-ku, Yokohama, Kanagawa Prefecture (72) Inventor Fumihiko Iwashita 1-7-2 Jindaiji, Mitaka City, Tokyo (72) Invention Norio Sato 566-4 Karasawa, Fujisawa City, Kanagawa Prefecture (56) Reference JP-A-63-130803 (JP, A)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】複数台の台車上に搭載され、両端部が路面
に当接し、施工速度に応じて移動する道路橋と、該道路
橋の橋梁下部に装着された舗装破砕・排出装置と掘削装
置と脱水・改良装置と配管装置及び舗装装置とを有し、 舗装破砕・排出装置は道路橋の進行方向先端部の橋梁下
部に設けられ、舗装カットと舗装こわしを行う破砕手段
と、破砕した舗装を排出する排出手段を有し、 掘削装置は舗装破砕・排出装置に連設され路盤材と路床
土をそれぞれ掘削する掘削手段と、掘削した土砂を搬送
する搬送手段を有し、 脱水・改良装置は搬送手段に連設され搬送手段で搬送さ
れた土砂を脱水し、脱水された土砂を路盤材と路床土に
分離して改良し、 配管装置は掘削装置に連設され埋設する管を保管する管
保管手段と、保管された管を掘削部に搬送し設置する管
搬送手段と、設置された管を接合する接合手段を有し、 埋戻し装置は配管装置に連設され上記脱水・改良装置か
ら送られる路床土と路盤材により掘削部を埋設する土砂
供給手段と、埋設した土砂を転圧する転圧手段を有し、 舗装装置は埋戻し装置に連設され、転圧手段で転圧され
た土砂の上面を舗装することを特徴とする管埋設装置。
1. A road bridge mounted on a plurality of carriages, both ends of which come into contact with a road surface and move according to a construction speed, and a pavement crushing / discharging device and excavation attached to a lower part of the bridge of the road bridge. It has a device, dehydration / improvement device, piping device and pavement device, and a pavement crushing / discharging device is provided at the lower part of the bridge at the tip of the road bridge in the traveling direction, and a crushing means for performing pavement cutting and pavement breaking and crushing. The excavator has discharge means for discharging pavement, and the excavator has excavation means that are connected to the pavement crushing and discharge equipment to excavate roadbed material and subgrade soil, respectively, and transport means for transporting the excavated earth and sand. The improvement device is connected to the transportation means to dehydrate the soil transported by the transportation means, separate the dehydrated soil into roadbed material and roadbed soil, and improve the piping equipment. Pipe storage means for storing the It has a pipe conveying means for sending and installing it, and a joining means for joining the installed pipes.The backfill device is connected to the piping device and the excavated part is constructed by the subgrade soil and roadbed material sent from the dehydration / improvement device. It has a sediment supply means to be buried and a compaction means to compact the buried sediment, and the paving device is connected to the backfilling device and paves the upper surface of the soil compacted by the compaction means. Pipe burying device.
JP2009512A 1990-01-20 1990-01-20 Pipe burying device Expired - Lifetime JP2516442B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009512A JP2516442B2 (en) 1990-01-20 1990-01-20 Pipe burying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009512A JP2516442B2 (en) 1990-01-20 1990-01-20 Pipe burying device

Publications (2)

Publication Number Publication Date
JPH03217502A JPH03217502A (en) 1991-09-25
JP2516442B2 true JP2516442B2 (en) 1996-07-24

Family

ID=11722303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009512A Expired - Lifetime JP2516442B2 (en) 1990-01-20 1990-01-20 Pipe burying device

Country Status (1)

Country Link
JP (1) JP2516442B2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63130803A (en) * 1986-11-17 1988-06-03 株式会社神戸製鋼所 Equipment for road construction

Also Published As

Publication number Publication date
JPH03217502A (en) 1991-09-25

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