JPH0417672Y2 - - Google Patents
Info
- Publication number
- JPH0417672Y2 JPH0417672Y2 JP1985196263U JP19626385U JPH0417672Y2 JP H0417672 Y2 JPH0417672 Y2 JP H0417672Y2 JP 1985196263 U JP1985196263 U JP 1985196263U JP 19626385 U JP19626385 U JP 19626385U JP H0417672 Y2 JPH0417672 Y2 JP H0417672Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical
- diameter
- partition wall
- pipe
- hood
- 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
Links
- 238000005192 partition Methods 0.000 claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は地中に小口径の管体を敷設するための
シールド掘削機の改良に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a shield excavator for laying a small diameter pipe underground.
（従来の技術）
下水道工事における管体敷設工事において、敷
設すべき管体としては種々の外径のものが使用さ
れており、これらの管体を推進工法によつて敷設
する際、敷設に先立つて地盤を掘削するシールド
掘削機としては、その外径が敷設する管体の外径
に略等しいものが使用される。(Prior art) In pipe construction work in sewerage construction, pipes with various outside diameters are used. As a shield excavator for excavating the ground, one whose outer diameter is approximately equal to the outer diameter of the pipe to be laid is used.
従つて、例えば、下水道管の場合には、上流か
ら下流に向かつてその管径が大きくなるように敷
設するのが通例であるが、このような管路を敷設
するためには、従来から、管径に従つて種々の径
のシールド掘削機を使用して管体の敷設を行つて
いるのが現状である。 Therefore, for example, in the case of sewer pipes, it is customary to lay them so that the pipe diameter increases from upstream to downstream, but in order to lay such pipes, conventionally, Currently, the pipe bodies are laid using shield excavators of various diameters depending on the pipe diameter.
（考案が解決しようとする課題）
しかしながら、このような敷設方法によれば、
敷設すべき管体の径が変化する毎にその管径に応
じた径のシールド掘削機を使用しなければならな
いため、掘削機の設計、製作費用が嵩んで管敷設
費用が膨大となるばかりでなく、シールド掘削機
を全体的に取替えなければならないので、作業能
率が悪くなつて工期が長くなる等の問題点があつ
た。(Problem to be solved by the invention) However, according to this installation method,
Each time the diameter of the pipe to be laid changes, a shield excavator with a diameter corresponding to the pipe diameter must be used, which increases the design and manufacturing costs of the excavator, which only increases the cost of laying the pipe. Since the shield excavator had to be replaced entirely, there were problems such as poor work efficiency and a long construction period.
このため、シールド掘削機の筒状本体に、該筒
状本体よりも大径で、且つその外径の大きさが異
なる外筒を交換可能に被嵌し、この外筒の先端部
を筒状本体から突出させて、その突出端内部にカ
ツターを配設するように構成したシールド掘削機
が開発されたが、このような構成では掘削される
トンネル径がシールド掘削機そのものの外径より
も大径となり、小口径のトンネル掘削には適さな
いものである。 For this purpose, an outer cylinder having a larger diameter than the cylindrical main body and different outer diameters is replaceably fitted onto the cylindrical main body of the shield excavator, and the tip of this outer cylinder is fitted into a cylindrical shape. A shield excavator has been developed that has a cutter that protrudes from the main body and has a cutter installed inside the protruding end. diameter, making it unsuitable for small-diameter tunnel excavation.
本考案は、シールド掘削機本体の径と同一径の
トンネルから大径のトンネルまで、掘削を可能に
したシールド掘削機を提供するものである。 The present invention provides a shield excavator that can excavate tunnels ranging from tunnels with the same diameter as the shield excavator main body to large diameter tunnels.
（課題を解決するための手段）
本考案のシールド掘削機は、内部に回転駆動装
置３を配設した筒状本体１の前端内周面に隔壁４
を一体に設け、この隔壁４の中央部に設けた軸受
９に前記回転駆動装置３によつて回転する回転軸
８を挿嵌し、さらに、後端内周面にリング状ブラ
ケツト１３，１３′をそれぞれ周設し且つ外径が
前記筒状本体１の外径と同一径に形成された筒状
フード１２′と大径に形成された筒状フード１２
とのいずれかを前記隔壁４の前端面にそのリング
状ブラケツト１３，１３′を介して取替え可能に
取付けると共に、筒状フード１２，１２′内に突
出する前記回転軸８にこれらの筒状フード１２，
１２′の径に応じた外径を有するカツター２，
２′を着脱自在に装着した構造を有する。(Means for Solving the Problems) The shield excavator of the present invention has a partition wall 4 on the inner peripheral surface of the front end of a cylindrical body 1 in which a rotation drive device 3 is disposed.
A rotary shaft 8 rotated by the rotary drive device 3 is inserted into a bearing 9 provided in the center of the partition wall 4, and ring-shaped brackets 13, 13' are provided on the inner peripheral surface of the rear end. A cylindrical hood 12' having an outer diameter equal to that of the cylindrical body 1 and a cylindrical hood 12 having a large diameter.
are replaceably attached to the front end surface of the partition wall 4 via their ring-shaped brackets 13, 13', and these cylindrical hoods are attached to the rotating shaft 8 protruding into the cylindrical hoods 12, 12'. 12,
A cutter 2 having an outer diameter corresponding to the diameter of 12',
2' is detachably attached.
（作用）
筒状本体１の隔壁４の前端面に、この筒状本体
１と同一径を有する筒状フード１２′を装着する
と共に該筒状フード１２′の径に応じたカツター
２′を回転軸８に連結させた状態で、推進工法に
よつてシールド掘削機を前進させて該筒状本体１
と略同一径を有する管体を所定長さ敷設する。(Function) A cylindrical hood 12' having the same diameter as the cylindrical body 1 is attached to the front end surface of the partition wall 4 of the cylindrical body 1, and the cutter 2' is rotated according to the diameter of the cylindrical hood 12'. With the shield excavator connected to the shaft 8, the cylindrical body 1 is moved forward by a propulsion method.
A pipe having approximately the same diameter as the pipe is laid for a predetermined length.
次に該管体よりもやや大径の管体を前記管体に
連続して敷設する場合、シールド掘削機の筒状本
体１の前端に装着した筒状フード１２′を筒状本
体１から取り外し、次の管径に応じた大径の筒状
フード１２に取り替えると共に、この筒状フード
１２に応じた径のカツター２と交換し、しかるの
ち、管体を敷設するための掘削を行うものであ
る。 Next, when a pipe body with a diameter slightly larger than the above pipe body is to be laid continuously on the pipe body, the cylindrical hood 12' attached to the front end of the cylindrical body 1 of the shield excavator is removed from the cylindrical body 1. , the cylindrical hood 12 is replaced with a larger diameter cylindrical hood 12 corresponding to the next pipe diameter, and the cutter 2 is replaced with a cutter 2 of a diameter corresponding to this cylindrical hood 12, and then excavation is carried out for laying the pipe body. be.
（実施例）
本考案の実施例を図面について説明すると、１
はシールド掘削機の筒状本体で、その内部にカツ
ター２の回転駆動装置３を配設していると共に前
端内周面に隔壁４の外周端面を水密的に嵌合、固
着させてあり、この隔壁４により筒状本体１の開
口端を閉止してある。(Example) To explain the example of the present invention with reference to the drawings, 1
is a cylindrical main body of a shield excavator, in which a rotary drive device 3 for a cutter 2 is disposed, and the outer peripheral end surface of a partition wall 4 is fitted and fixed to the inner peripheral surface of the front end in a watertight manner. The opening end of the cylindrical body 1 is closed by a partition wall 4.
回転駆動装置３は、筒状本体１の内周面三方か
ら中央に向かつて突設した支持フレーム５の中央
にボルト、ナツトで固着され、減速機６、カツプ
リング７を介してその回転軸８を隔壁４の中央部
に水密に貫通、固着している軸受９に回転自在に
挿通、支持させ、隔壁４から前方に突出させてあ
る。 The rotary drive device 3 is fixed with bolts and nuts to the center of a support frame 5 that protrudes toward the center from three sides of the inner circumferential surface of the cylindrical body 1, and its rotary shaft 8 is connected via a reducer 6 and a coupling 7. It is rotatably inserted and supported by a bearing 9 which penetrates and is fixed to the central part of the partition wall 4 in a watertight manner, and projects forward from the partition wall 4.
又、筒状本体１の前端には、内周に向かつて突
設したリング状の取付けブラケツト１０を一体に
設けてある。 Further, a ring-shaped mounting bracket 10 is integrally provided at the front end of the cylindrical body 1 and projects toward the inner circumference.
１１は前記隔壁４の前端面と取付けブラケツト
１０の背面間に介在したシールである。 Reference numeral 11 denotes a seal interposed between the front end surface of the partition wall 4 and the back surface of the mounting bracket 10.
１２は後端に内周方に向かつてリング状ブラケ
ツト１３を一体に周設してなる筒状フードで、そ
のリング状ブラケツト１３の背面を前記筒状本体
１の取付けブラケツト１０の前面に接合し、ボル
ト、ナツト等の締結具１４によつてボルト挿通孔
１５を通して隔壁４に着脱自在に装着してある。 Reference numeral 12 denotes a cylindrical hood having a ring-shaped bracket 13 integrally provided around the rear end toward the inner circumference, and the back surface of the ring-shaped bracket 13 is joined to the front surface of the mounting bracket 10 of the cylindrical body 1. It is detachably attached to the partition wall 4 through a bolt insertion hole 15 using a fastener 14 such as a bolt or a nut.
この筒状フード１２は、予め、その外径が筒状
本体１の外径と同一径のものから大径のものまで
準備されていると共に、この筒状フード１２内に
配設されるカツター２の径も該筒状フード１２の
径に応じたものが使用され、筒状フード１２内に
突出した前記回転軸８に交換可能に装着されるも
のである。 This cylindrical hood 12 is prepared in advance from one with an outer diameter that is the same as the outer diameter of the cylindrical main body 1 to one with a larger diameter, and a cutter 2 disposed inside this cylindrical hood 12. The diameter of the cylindrical hood 12 corresponds to the diameter of the cylindrical hood 12, and the cylindrical hood 12 is replaceably mounted on the rotating shaft 8 protruding into the cylindrical hood 12.
例えば、第１図においては、筒状本体１の前端
面にこの筒状本体１よりも大径の筒状フード１２
とその径に応じたカツター２を装着している状態
を示し、第５図においては、筒状本体１の前端面
にこの筒状本体１と同一外径を有する筒状フード
１２′とそれに応じた径を有するカツター２′を装
着している状態を示す。 For example, in FIG. 1, a cylindrical hood 12 having a larger diameter than the cylindrical body 1 is attached to the front end surface of the cylindrical body 1.
In FIG. 5, a cylindrical hood 12' having the same outer diameter as the cylindrical body 1 and a cylindrical hood 12' having the same outer diameter as the cylindrical body 1 are attached to the front end surface of the cylindrical body 1. This shows a state in which a cutter 2' having a diameter of 2' is attached.
１６，１７は送泥管と排泥管で、その開口前端
を筒状本体１の前記隔壁４を貫通して筒状フード
１２，１２′内に臨ませてあり、後端は、筒状本
体１の後端にテールパツキン１８を介して接続し
た円筒状テール部１９内において、ジヨント２０
を有する可撓管２１に接続し、このジヨイント２
０に図示しない送、排泥管をさらに接続して掘削
土砂を循環泥水と共に立坑側に排出するようにし
てある。 Reference numerals 16 and 17 indicate a mud feeding pipe and a mud draining pipe, the opening front ends of which pass through the partition wall 4 of the cylindrical body 1 and face into the cylindrical hoods 12 and 12', and the rear ends of the sludge pipes extend through the partition wall 4 of the cylindrical body 1. A joint 20 is installed in a cylindrical tail portion 19 connected to the rear end of the joint 1 through a tail packing 18.
This joint 2 is connected to a flexible tube 21 having a
0 is further connected to a feed and mud discharge pipe (not shown) to discharge the excavated earth and sand to the shaft side together with the circulating mud.
２２は前記筒状本体１内の支持フレーム５の背
面三方にその前端を取付けた方向修正ジヤツキ
で、後端を円筒状テール部１９の内周面に連結支
持させ、テール部１９に対して筒状本体１の方向
を修正するものである。 Reference numeral 22 denotes a direction adjustment jack whose front end is attached to three sides of the back of the support frame 5 in the cylindrical main body 1, and whose rear end is connected and supported to the inner circumferential surface of the cylindrical tail portion 19, so that the cylindrical direction adjustment jack 22 The direction of the shaped body 1 is corrected.
２３はテール部１９の後端に後続させる仮管又
は敷設管である。 Reference numeral 23 denotes a temporary pipe or laying pipe that follows the rear end of the tail portion 19.
このように構成したシールド掘削機は、カツタ
ー２又は２′を回転させながら発進立坑側から到
達立坑に向かつて掘進し、掘削された土砂を送、
排泥管１６，１７を介して地上に排出すると共
に、テール部１９に敷設すべき管体２３または仮
管を順次後続させながら、推進工法によつて地中
に管体を埋設するものであるが、その際、まず、
第５図に示すように、筒状本体１の隔壁４の前端
面に、この筒状本体１と同一径を有する筒状フー
ド１２′を装着すると共に該筒状フード１２′の径
に応じたカツター２′を回転軸８に連結し、この
状態にして、推進工法によつてシールド掘削機を
前進させて該筒状本体１と略同一径を有する管体
を所定長さ敷設する。 The shield excavator configured in this manner excavates from the starting shaft side toward the destination shaft while rotating the cutter 2 or 2', and sends the excavated earth and sand.
The mud is discharged to the ground via the mud removal pipes 16 and 17, and the pipe body is buried in the ground by a propulsion method while successively following the pipe body 23 or temporary pipe to be laid in the tail section 19. However, in that case, first,
As shown in FIG. 5, a cylindrical hood 12' having the same diameter as the cylindrical body 1 is attached to the front end surface of the partition wall 4 of the cylindrical body 1, and a cylindrical hood 12' having the same diameter as the cylindrical body 1 is attached. The cutter 2' is connected to the rotating shaft 8, and in this state, the shield excavator is advanced by a propulsion method to lay a pipe having approximately the same diameter as the cylindrical body 1 for a predetermined length.
次に該管体よりもやや大径の管体を前記管体に
連続して敷設する場合、シールド掘削機の筒状本
体１の前端に装着した筒状フード１２′を筒状本
体１から取り外して次の管径に応じた大径の筒状
フード１２に取り替えると共に、この筒状フード
１２に応じた径のカツター２と交換し、しかるの
ち、管体を敷設するための堀削を行うものであ
る。 Next, when a pipe body with a diameter slightly larger than the above pipe body is to be laid continuously on the pipe body, the cylindrical hood 12' attached to the front end of the cylindrical body 1 of the shield excavator is removed from the cylindrical body 1. Then, the cylindrical hood 12 is replaced with a larger diameter cylindrical hood 12 corresponding to the next pipe diameter, and the cutter 2 is replaced with a cutter 2 of a diameter corresponding to this cylindrical hood 12, and then excavation is carried out for laying the pipe body. It is.
この場合、筒状本体１の後端に連結しているテ
ール部１９もそれに応じた径のものと取り替える
ことが望ましい。 In this case, it is desirable that the tail portion 19 connected to the rear end of the cylindrical body 1 is also replaced with one of a diameter corresponding to the tail portion 19.
（考案の効果）
以上のように、本考案のシールド掘削機によれ
ば、内部に回転駆動装置３を配設した筒状本体１
の前端内周面に隔壁４を一体に設け、この隔壁４
の中央部に設けた軸受９に前記回転駆動装置３に
よつて回転する回転軸８を挿嵌し、さらに、後端
内周面にリング状ブラケツト１３，１３′をそれ
ぞれ周設し且つ外径が前記筒状本体１の外径と同
一径に形成された筒状フード１２′と大径に形成
された筒状フード１２とのいずれかを前記隔壁４
の前端面にそのリング状ブラケツト１３，１３′
を介して取替え可能に取付けると共に、筒状フー
ド１２，１２′内に突出する前記回転軸８にこれ
らの筒状フード１２，１２′の径に応じた外径を
有するカツター２，２′を着脱自在に装着してい
るので、まず、筒状本体１と同一外径を有する筒
状フード１２′及び該筒状フード１２′の径に適合
するカツター２′をそれぞれ筒状本体１の隔壁４
の前端面と回転軸８とに装着してシールド掘削機
を構成し、このシールド掘削機によつて堀削しな
がら、筒状本体１と同一外径を有する小径の管体
を敷設することができる。(Effects of the invention) As described above, according to the shield excavator of the invention, the cylindrical body 1 has the rotary drive device 3 disposed therein.
A partition wall 4 is integrally provided on the inner peripheral surface of the front end of the partition wall 4.
A rotary shaft 8 rotated by the rotary drive device 3 is inserted into a bearing 9 provided in the center of the rotary shaft, and furthermore, ring-shaped brackets 13 and 13' are respectively provided on the inner peripheral surface of the rear end, and the outer diameter is Either the cylindrical hood 12' formed to have the same diameter as the outer diameter of the cylindrical body 1 or the cylindrical hood 12 formed to have a larger diameter is connected to the partition wall 4.
The ring-shaped brackets 13, 13' are attached to the front end surface of the
The cutters 2, 2', which have outer diameters corresponding to the diameters of the cylindrical hoods 12, 12', can be attached to and removed from the rotary shaft 8 protruding into the cylindrical hoods 12, 12'. Since the cylindrical hood 12' has the same outer diameter as the cylindrical body 1 and the cutter 2' that fits the diameter of the cylindrical hood 12', the cutter 2' is attached to the partition wall 4 of the cylindrical body 1.
A shield excavator is constructed by attaching it to the front end surface of the cylindrical body 1 and the rotating shaft 8, and while excavating with this shield excavator, it is possible to lay a small-diameter pipe body having the same outer diameter as the cylindrical body 1. can.
次に、その小径管体を所望長さ敷設したのち、
筒状本体１の隔壁４に取付けている前記小径の筒
状フード１２′とカツター２′を大径の筒状フード
１２とカツター２にそれぞれ取替えることによつ
て、内部に回転駆動装置３などの各種設備を配設
している筒状本体１をそのまま使用して前記小径
管体に連続した大径の管体を敷設することができ
る。 Next, after laying the small diameter pipe to the desired length,
By replacing the small-diameter cylindrical hood 12' and cutter 2' attached to the partition wall 4 of the cylindrical body 1 with the large-diameter cylindrical hood 12 and cutter 2, the rotary drive device 3, etc. can be installed inside. It is possible to use the cylindrical main body 1 in which various equipment is installed as it is to lay a large-diameter pipe that is continuous with the small-diameter pipe.
その際、筒状フード１２，１２′の後端内周面
にリング状ブラケツト１３，１３′を周設し、こ
のリング状ブラケツト１３，１３′を筒状本体１
の隔壁４の前端面に対して着脱自在に取付けてい
るので、管体敷設工事中の現場において筒状フー
ド１２，１２′の取替え作業が容易に行うことが
でき、径の異なる管体の敷設を能率よく行えて工
期の短縮を図ることができるものである。 At that time, ring-shaped brackets 13, 13' are provided around the inner peripheral surface of the rear end of the cylindrical hoods 12, 12', and these ring-shaped brackets 13, 13' are attached to the cylindrical body 1.
The cylindrical hoods 12, 12' can be easily replaced at the site during pipe laying work because they are removably attached to the front end face of the partition wall 4, making it easy to install pipes with different diameters. This can be done efficiently and shorten the construction period.
図面は本考案の実施例を示すもので、第１図は
大径筒状フードを装着した状態の縦断側面図、第
２図〜第４図はそれぞれ第１図Ａ−Ａ線、Ｂ−Ｂ
線、Ｃ−Ｃ線における断面図、第５図は小径の筒
状フードを装着した状態の縦断側面図である。
１……筒状本体、２，２′……カツター、３…
…回転駆動装置、４……隔壁、８……回転軸、９
……軸受、１２，１２′……筒状フード、１３，
１３′……リング状ブラケツト。
The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional side view of a state in which a large-diameter cylindrical hood is attached, and FIGS. 2 to 4 are lines A-A and B-B in FIG. 1, respectively.
5 is a longitudinal sectional view taken along line C--C, and a longitudinal sectional side view of the device with a small-diameter cylindrical hood attached. 1... Cylindrical body, 2, 2'... Cutter, 3...
... Rotation drive device, 4 ... Partition wall, 8 ... Rotation shaft, 9
... Bearing, 12, 12' ... Cylindrical hood, 13,
13'...Ring-shaped bracket.
Claims (1)
前端内周面に隔壁４を一体に設け、この隔壁４の
中央部に設けた軸受９に前記回転駆動装置３によ
つて回転する回転軸８を挿嵌し、さらに、後端内
周面にリング状ブラケツト１３，１３′をそれぞ
れ周設し且つ外径が前記筒状本体１の外径と同一
径に形成された筒状フード１２′と大径に形成さ
れた筒状フード１２とのいずれかを前記隔壁４の
前端面にそのリング状ブラケツト１３，１３′を
介して取替え可能に取付けると共に、筒状フード
１２，１２′内に突出する前記回転軸８にこれら
の筒状フード１２，１２′の径に応じた外径を有
するカツター２，２′を着脱自在に装着したこと
を特徴とするシールド掘削機。 A partition wall 4 is integrally provided on the inner circumferential surface of the front end of a cylindrical body 1 in which a rotation drive device 3 is disposed, and a bearing 9 provided in the center of the partition wall 4 receives rotation by the rotation drive device 3. A cylindrical hood 12 into which the shaft 8 is inserted, further provided with ring-shaped brackets 13 and 13' on the inner peripheral surface of the rear end, and whose outer diameter is the same as that of the cylindrical main body 1. ' and a large-diameter cylindrical hood 12 are replaceably attached to the front end surface of the partition wall 4 via their ring-shaped brackets 13, 13', and the cylindrical hood 12, 12' is A shield excavator characterized in that cutters 2, 2' having outer diameters corresponding to the diameters of these cylindrical hoods 12, 12' are detachably attached to the protruding rotary shaft 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985196263U JPH0417672Y2 (en) | 1985-12-20 | 1985-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985196263U JPH0417672Y2 (en) | 1985-12-20 | 1985-12-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62103896U JPS62103896U (en) | 1987-07-02 |
| JPH0417672Y2 true JPH0417672Y2 (en) | 1992-04-20 |
Family
ID=31154921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985196263U Expired JPH0417672Y2 (en) | 1985-12-20 | 1985-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0417672Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5876697A (en) * | 1981-10-30 | 1983-05-09 | 三井建設株式会社 | Shield apparatus for pipe pushing type shield construction method |
| JPS59177499A (en) * | 1983-03-29 | 1984-10-08 | 三井建設株式会社 | Shielded excavator for method of construction of push pipe type shielding |
-
1985
- 1985-12-20 JP JP1985196263U patent/JPH0417672Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5876697A (en) * | 1981-10-30 | 1983-05-09 | 三井建設株式会社 | Shield apparatus for pipe pushing type shield construction method |
| JPS59177499A (en) * | 1983-03-29 | 1984-10-08 | 三井建設株式会社 | Shielded excavator for method of construction of push pipe type shielding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62103896U (en) | 1987-07-02 |
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