JPH1046623A - Horizontally excavating device for insertion hole for pc wall body - Google Patents

Horizontally excavating device for insertion hole for pc wall body

Info

Publication number
JPH1046623A
JPH1046623A JP20510596A JP20510596A JPH1046623A JP H1046623 A JPH1046623 A JP H1046623A JP 20510596 A JP20510596 A JP 20510596A JP 20510596 A JP20510596 A JP 20510596A JP H1046623 A JPH1046623 A JP H1046623A
Authority
JP
Japan
Prior art keywords
cutter
wall
excavation
chain
blades
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.)
Pending
Application number
JP20510596A
Other languages
Japanese (ja)
Inventor
Osamu Watanabe
修 渡辺
Akira Oshima
章 大島
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 Concrete Industries Co Ltd
Original Assignee
Nippon Concrete Industries Co Ltd
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 Concrete Industries Co Ltd filed Critical Nippon Concrete Industries Co Ltd
Priority to JP20510596A priority Critical patent/JPH1046623A/en
Publication of JPH1046623A publication Critical patent/JPH1046623A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To prevent the wall of an excavated hole from collapsing and improve efficiency of excavation of the ground by means of a horizontally excavating device, when an excavated hole is formed by means of the horizontally excavating device and PC wall bodies are successively inserted into the excavated hole to build an earth retaining wall. SOLUTION: A chain 7 is passed around sprockets 6, 6 provided at the top and bottom parts of a cutter post 5 of a horizontally excavating device, respectively, in an endless manner, and a pair of left and right cutter blades 8a, 8b, which can be bent into an angular shape about a cutter pin 23 as a center of rotation, are provided on the chain 7. And when the blades 8a, 8a move to a position on a side opposite to an excavation side, the blades 8a, 8a are bent into an angular shape by guide rollers 25, 25 so that the left and right ends of the blades 8a, 88a are received in brackets 12, 12, and further an extendable PC wall body push body is provided inside the brackets 12, 12 so that a PC wall body 26 inserted between excavated hole collapsing prevention plates 13, 13 can be pushed by the PC wall body push body.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は断面方形のPC
(プレキャストコンクリート)壁体挿入孔水平掘削装置
に関するものであり、特に、水平掘削装置を用いて河川
や建築構造物の土止め壁をPC壁体を連設して構築する
とき、該水平掘削装置によって掘削されたPC壁体の挿
入孔が崩壊しないようにすると共に掘削作業の能率を向
上させ、PC壁体相互を密着させて良質の土止め壁を構
築できるようにしたPC壁体挿入孔水平掘削装置に関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PC having a rectangular cross section.
(Precast concrete) The present invention relates to a horizontal excavation device for a wall insertion hole, and more particularly to a horizontal excavation device for constructing a wall for a river or a building structure by connecting a PC wall body using the horizontal excavation device. PC wall insertion hole horizontal hole that prevents the insertion hole of the PC wall body excavated from collapsing, improves the efficiency of excavation work, and allows the PC wall bodies to be in close contact with each other to construct a high quality retaining wall. It relates to a drilling rig.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】従来の
水平掘削装置を図5乃至図7に従って説明する。図5及
び図6に於て、1は従来一般に称呼されているトレーダ
工法に用いられる水平掘削装置を示す。該水平掘削装置
1は下部走行体2上に搭載されると共に、横長の門形フ
レーム4が取付けられている。
2. Description of the Related Art A conventional horizontal excavator will be described with reference to FIGS. 5 and 6, reference numeral 1 denotes a horizontal excavator used in a trader method generally referred to in the related art. The horizontal excavator 1 is mounted on a lower traveling body 2 and has a horizontally long portal frame 4 attached thereto.

【0003】又、該門形フレーム4の側方に、該門形フ
レーム4に沿って移動できるカッターポスト5が取付け
られている。該カッターポストは側面視略長方形状であ
って、且つ、平面視が略箱型に形成されている。而し
て、該カッターポスト5の上下端部にはスプロケット
6,6が夫々設けられており、更に、該上下のスプロケ
ット6,6間に無端状にチェン7が掛け渡されている。
該チェン7の外側面にはカッタービット8が固設され、
そして、前記片方のスプロケット6を駆動側として別途
設置されている駆動装置(図示せず)にて該駆動側のス
プロケット6を駆動回転せしめ、そして、受動側のスプ
ロケット6間を該チェン7が回転するように構成されて
いる。
[0003] A cutter post 5 movable along the gate-shaped frame 4 is attached to the side of the gate-shaped frame 4. The cutter post has a substantially rectangular shape in side view, and is formed in a substantially box shape in plan view. Thus, sprockets 6 and 6 are provided at the upper and lower ends of the cutter post 5, respectively, and a chain 7 is extended endlessly between the upper and lower sprockets 6 and 6.
A cutter bit 8 is fixed on the outer surface of the chain 7,
The sprocket 6 on the driving side is driven and rotated by a driving device (not shown) separately provided with the one sprocket 6 as the driving side, and the chain 7 rotates between the sprockets 6 on the passive side. It is configured to be.

【0004】そこで、該水平掘削装置1を用いて地盤W
を掘削する際に於ては、先ず、該地盤Wの所定位置に予
掘された孔Hに前記カッターポスト5を建て込み、そし
て、前記駆動側のスプロケット6を駆動させることによ
ってチェン7が回転し、前記カッタービット8にて地盤
Wを掘削液を注入し乍ら掘削し、そして、長方形断面の
掘削孔9を築造する。その後、該掘削孔9内にセメント
ミルク等の固化液を注入して攪拌混合し、そして、芯材
としてH鋼10を所定間隔毎に挿入し、前記固化液を硬
化させて土止め壁11を構築する。
[0004] Therefore, the ground W
When excavating the ground, first, the cutter post 5 is erected in a hole H preliminarily excavated at a predetermined position of the ground W, and the chain 7 is rotated by driving the sprocket 6 on the driving side. Then, the ground W is excavated with the cutter bit 8 while injecting the excavating liquid, and the excavation hole 9 having a rectangular cross section is constructed. Thereafter, a solidified liquid such as cement milk is poured into the excavation hole 9 and mixed with stirring, and H steels 10 are inserted at predetermined intervals as a core material, and the solidified liquid is hardened to fix the retaining wall 11. To construct.

【0005】前記従来工法は掘削孔9内にセメントミル
クの如き固化液を注入し、更に攪拌混合して前記H鋼1
0,10…を順次挿入し、該固化液の硬化によって土止
め壁11を構築するのであるから土止め壁11の仕上げ
に相当の時間を要し、コスト高となる。そこで、前記H
鋼10,10…に代えてPC壁体を用いる場合は、前記
水平掘削装置1による地盤の掘進時に順次PC壁体を該
掘削孔に挿入できるようにし、且つ、該掘削孔の左右対
峙している孔壁の崩壊を招くことなく該掘削孔内の泥土
化を促進させて掘削作業及び、前記PC壁体の挿入を容
易にすると共に、該挿入されたPC壁体同志を密着させ
て、良質の土止め壁を構築するために解決せらるべき技
術的課題が生じてくるのであり、本発明は該課題を解決
することを目的とする。
[0005] In the conventional method, a solidified liquid such as cement milk is poured into a borehole 9 and further mixed by stirring.
. 0, 10... Are sequentially inserted, and the retaining wall 11 is constructed by hardening of the solidified liquid. Therefore, it takes a considerable time to finish the retaining wall 11, and the cost increases. Therefore, the H
When using a PC wall in place of the steel 10, 10,..., The PC wall can be sequentially inserted into the excavation hole when the horizontal excavator 1 excavates the ground, and the PC wall is opposed to the left and right of the excavation hole. Facilitates excavation work and the insertion of the PC wall body without causing collapse of the bored wall without causing collapse of the hole wall, and makes the inserted PC wall bodies closely contact with each other to obtain good quality. Technical problems to be solved in order to construct such a retaining wall arise, and the present invention aims to solve the problems.

【0006】[0006]

【課題を解決するための手段】この発明は上記目的を達
成するために提案せられたものであり、側面視略長方形
状であって、且つ、平面視略箱状に形成されたカッター
ポストを有し、該カッターポストの上下端部にはスプロ
ケットが枢着されており、該スプロケット間に無端体状
に掛け渡されたチェンにカッタービットを固設し、該チ
ェンの上下回動にて土止め壁を構築するための掘削孔を
水平方向に掘進して築造する掘削装置に於て、前記カッ
タービットはチェンの側面に外側に向って突設されたカ
ッタービットブラケット間にカッタピンを固設し、該カ
ッターピンに左右のカッター刃を蝶着し、該カッター刃
が掘削側と反対側の位置に移動してきたときには、ガイ
ドローラに押圧されて該カッター刃がく字状に折曲でき
るように構成されると共に、前記カッターポストの左右
側板を後方へ延設してブラケット及び掘削孔崩壊防止板
を形成し、更に、該左右のブラケットの中間部にフレー
ムを架設し、該フレームに拡縮自在に形成したPC壁体
押付体を取付け、前記左右の掘削孔崩壊防止板間に挿入
されるPC壁体の前面を該PC壁体押付体にて押し付け
ることができるように形成されたPC壁体挿入孔水平掘
削装置を提供するものである。
SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object, and a cutter post having a substantially rectangular shape in side view and a substantially box shape in plan view is provided. A sprocket is pivotally attached to the upper and lower ends of the cutter post. A cutter bit is fixed to a chain that is endlessly stretched between the sprockets. In a drilling rig for digging a drilling hole for constructing a stop wall in a horizontal direction, the cutter bit is provided by fixing a cutter pin between cutter bit brackets protruding outward on the side surface of the chain. The left and right cutter blades are hinged to the cutter pin, and when the cutter blade moves to a position opposite to the digging side, the cutter blade is pressed by a guide roller so that the cutter blade can be bent in a square shape. Is In addition, the left and right side plates of the cutter post are extended rearward to form a bracket and an excavation hole collapsing prevention plate, and a frame is erected at an intermediate portion between the left and right brackets, and a PC formed to be scalable on the frame. PC wall insertion hole horizontal excavation formed such that a wall pressing member is attached and a front surface of a PC wall inserted between the left and right excavation hole collapse prevention plates can be pressed by the PC wall pressing member. An apparatus is provided.

【0007】[0007]

【発明の実施の形態】以下、本発明の一実施の形態を図
1乃至図5に従って詳述する。尚、従来例の図5及び図
6に於て説明した構成中、対称部分は同一の符号を用い
るものとする。図1に於て、左側がカッターポスト5の
前進側であってカッター刃8a,8aによる掘削側であ
る。従って、反対側が背面側となる。該カッターポスト
5の背面側に於ては、該カッターポスト5の上下端部近
傍位置より該カッターポスト5の左右側板5a,5bを
夫々背後方向へ延設してブラケット12,12を設け、
更に、該ブラケット12,12を後方へ延設して掘削孔
崩壊防止板13,13を設ける。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. It should be noted that, in the configuration described with reference to FIGS. In FIG. 1, the left side is the advance side of the cutter post 5 and the excavation side by the cutter blades 8a, 8a. Therefore, the opposite side is the back side. On the back side of the cutter post 5, left and right side plates 5a, 5b of the cutter post 5 extend rearward from positions near the upper and lower ends of the cutter post 5, respectively, and brackets 12, 12 are provided.
Further, the brackets 12, 12 are extended rearward to provide drilling hole collapse prevention plates 13, 13.

【0008】一方、該左右のブラケット12,12の中
間部にフレーム14を架設し、該フレーム14の背面の
上下端部に夫々リンク15,15を枢着し、更に、該リ
ンクのうち上方のリンク15はシリンダー16のピスト
ンロッド17に枢着され、他方のリンク15は該シリン
ダ16の下面に枢着され、更に、前記ピストンロッド1
7には板状の押し付け板18の背面の上端部に枢着され
たリンク15aを枢着すると共に、該押し付け板18の
背面の下端部と前記シリンダ16の下面との間にも他の
リンク15aを枢着してPC壁体押付体19を形成して
いる。
On the other hand, a frame 14 is erected between the left and right brackets 12, 12, and links 15, 15 are respectively pivoted at the upper and lower ends of the rear surface of the frame 14. The link 15 is pivotally connected to a piston rod 17 of a cylinder 16, and the other link 15 is pivotally connected to a lower surface of the cylinder 16.
7, a link 15a pivotally attached to the upper end of the rear surface of the plate-shaped pressing plate 18 is pivotally connected, and another link is also provided between the lower end of the rear surface of the pressing plate 18 and the lower surface of the cylinder 16. 15a is pivotally connected to form a PC wall pressing body 19.

【0009】一方、図2及び図3に示す如く、前記カッ
ターポスト5の前後の側板5c,5dの中心部であって
上下方向にチェンガイド20,20…が設けられ、該チ
ェンガイド20,20…の外側面に沿って回転移動する
ように設けられているチェン7の夫々のローラリンク7
a,7a…の側面に略L字状のアタッチメント21,2
1…を取付け、該アタッチメント21,21…の外側面
にカッタービットブラケット22,22…を固設し、該
カッタービットブラケット22,22…間にカッターピ
ン23,23…を固設し、該カッターピン23,23…
に左右のカッター刃8a,8a…の一端部を夫々蝶着
し、そして、該カッター刃8a,8a…の夫々の他端部
が外側方向へ折曲されて刃部を形成されており、且つ、
掘削幅を可及的に大にするために、該カッター刃8a,
8a…の夫々の刃部は前記カッターポスト5の左右の側
板5a,5bより左右外側方向に突出するように形成さ
れる。
On the other hand, as shown in FIGS. 2 and 3, chain guides 20, 20... Are provided at the center of the side plates 5c, 5d before and after the cutter post 5 and in the vertical direction. Each of the roller links 7 of the chain 7 provided so as to rotate along the outer surface of.
a, 7a... on the side surfaces of the attachments 21 and
Are fixed to the outer surfaces of the attachments 21, 21,..., And the cutter pins 23, 23 are fixed between the cutter bit brackets 22, 22,. Pins 23, 23 ...
, One end of each of the left and right cutter blades 8a, 8a ... is hinged, and the other end of each of the cutter blades 8a, 8a ... is bent outward to form a blade portion, and ,
In order to make the excavation width as large as possible, the cutter blades 8a,
Each of the blade portions 8a is formed so as to protrude outward in the left and right direction from the left and right side plates 5a and 5b of the cutter post 5.

【0010】斯くして、該カッター刃8a,8a…によ
って掘削されて該カッターポスト5が前進し、そして、
該カッター刃8a,8a…がカッターポスト5の背面側
に回動して来たときには、該カッター刃8a,8a…は
該カッターポスト5から後方へ延設されている左右のブ
ラケット12,12に衝突してチェン7の回動が阻止さ
れることになる。そこで、この発明に於ては図3に示す
如く、該カッターポスト5の背面側に於ては、前記左右
のカッター刃8a,8a…が夫々前記カッターピン2
3,23…を回動中心として内側へ回動するように、該
カッターポスト5の後部の左右端部から夫々ガイドロー
ラ支持部材24,24を後方の斜め内側方向へ対峙して
突設し、そして、該左右のガイドローラ支持部材24,
24の端部外側に夫々ガイドローラ25,25…を枢着
し、該ガイドローラ25,25…を前記左右のカッター
刃8a,8a…の内側面を圧接せしめて該左右のカッタ
ー刃8a,8a…を略く字状を呈するように折曲するこ
とにより、該カッター刃8a,8a…は該カッターポス
ト5の背面側に於ては、前記ブラケット12,12の内
側を回動することになり、依って、チェン7の回動並び
にカッタービット8による地盤Wの掘削操作には全く支
障を及ぼすことはない。
Thus, the cutter post 5 is advanced by being excavated by the cutter blades 8a, 8a,.
When the cutter blades 8a, 8a ... rotate to the back side of the cutter post 5, the cutter blades 8a, 8a ... move to the left and right brackets 12, 12 extending rearward from the cutter post 5. The collision prevents the rotation of the chain 7. Therefore, in the present invention, as shown in FIG. 3, on the back side of the cutter post 5, the left and right cutter blades 8a, 8a.
Guide roller support members 24, 24 are respectively protruded from the left and right end portions of the rear portion of the cutter post 5 so as to rotate inward around the rotation center with respect to 3, 23. Then, the left and right guide roller support members 24,
Are pivotally mounted on the outer sides of the ends of the cutter blades 24, and the guide rollers 25, 25 are pressed against the inner surfaces of the left and right cutter blades 8a. Are bent so as to form a substantially rectangular shape, so that the cutter blades 8a, 8a,... Rotate inside the brackets 12, 12 on the back side of the cutter post 5. Therefore, the rotation of the chain 7 and the excavation operation of the ground W by the cutter bit 8 are not affected at all.

【0011】而して、該カッターポスト5を地盤Wの所
定位置に予掘された孔Hに建て込み、そして、該カッタ
ービット8の回動によって該地盤Wを掘削し乍ら該カッ
ターポスト5を前進させる際、掘削前進動作を容易にす
るために掘削液(主として水)が掘削孔9内に注入せら
れ、そして、掘削土と相俟って該掘削孔9内を泥土化さ
せるのである。このとき、カッターポスト5の背後の左
右に延設されているブラケット12,12及び掘削孔崩
壊防止板13,13によって掘削孔9の左右の孔壁が保
護される。斯くして、前記泥土化による該孔壁が崩壊す
るようなことはなくなる。そこで、PC壁体26を掘削
孔9内に挿入するとき、該掘削孔9の孔壁が前述せるよ
うに掘削孔崩壊防止板13,13にて崩壊が阻止される
ので、該掘削孔崩壊防止板13,13間にPC壁体26
を挿入する作業も円滑に行われ、そして、順次挿入され
る該PC壁体26,26…によって連続した土止め壁を
構築するのであるが、該PC壁体26が掘削孔崩壊防止
板13,13間に挿入されたときには、前記シリンダ1
6のピストンロッド17が突出してPC壁体押付体19
の押付板18を該PC壁体26の前面に押し付け、そし
て、該PC壁体26を既に挿入されている隣接のPC壁
体26に押し付けて双方のPC壁体26,26を密着さ
せることができる。斯くして、PC壁体26,26…に
よって構築される土止め壁は水漏れがなくなり、従来の
ように別途セメントミルクの如き固化液を注入して硬化
させる必要がなくなる。
Thus, the cutter post 5 is erected at a predetermined position of the ground W in a hole H which has been dug, and the cutter post 5 is excavated by turning the cutter bit 8. When the drill is advanced, drilling liquid (mainly water) is injected into the drill hole 9 in order to facilitate the drilling advance operation, and the inside of the drill hole 9 is muddy together with the drilling soil. . At this time, the left and right hole walls of the excavation hole 9 are protected by the brackets 12 and 12 and the excavation hole collapse prevention plates 13 and 13 extending left and right behind the cutter post 5. In this way, the pore wall does not collapse due to the mudification. Therefore, when the PC wall 26 is inserted into the drilling hole 9, the collapse of the hole wall of the drilling hole 9 is prevented by the drilling hole collapse prevention plates 13, 13 as described above. PC wall 26 between plates 13 and 13
Are inserted smoothly, and a continuous retaining wall is constructed by the PC walls 26, 26,... Which are sequentially inserted. 13 when the cylinder 1
6 is projected from the piston rod 17 and the PC wall pressing body 19
The pressing plate 18 is pressed against the front surface of the PC wall 26, and the PC wall 26 is pressed against the adjacent PC wall 26 which has already been inserted, so that the two PC walls 26 are brought into close contact with each other. it can. Thus, the retaining wall formed by the PC walls 26, 26,... Does not leak water, and it is not necessary to separately inject and harden a solidifying liquid such as cement milk as in the related art.

【0012】更に又、該カッタービット8によって地盤
Wを掘削する際に於ては、前述せる如く、前記拡縮自在
のPC壁体押付体19によってPC壁体26を背後側に
押圧し、更に、隣接せる背後のPC壁体26に圧接させ
るように形成されているので、該カッタービット8によ
る掘削作業は該PC壁体26を反力受けとして円滑に行
われ、且つ、前記PC壁体26,26…相互間は更に密
着されることになる。
Further, when the ground W is excavated by the cutter bit 8, as described above, the PC wall 26 is pressed rearward by the expandable and contractible PC wall pressing body 19, and Since it is formed so as to be pressed against the adjacent PC wall 26 behind, the excavation work by the cutter bit 8 is smoothly performed by using the PC wall 26 as a reaction force receiving, and the PC wall 26, 26... Are further brought into close contact with each other.

【0013】又、該カッタービット8のカッター刃8
a,8a…が該カッターポスト5の背面側から前進側へ
回転移動してくるときには、該カッターポスト5の前進
側に前記ガイドローラ25,25…が配設されていない
ため、該カッター刃8a,8a…は左右直線状に復帰し
て掘削作業を為すことになる。更に、前記拡縮自在のP
C壁体押付体19の拡縮作用は適正に制御されることは
当然である。
Also, the cutter blade 8 of the cutter bit 8
are rotated from the back side of the cutter post 5 to the forward side, because the guide rollers 25 are not disposed on the forward side of the cutter post 5, the cutter blade 8a , 8a ... return to the left and right straight lines to perform the excavation work. Further, the scalable P
Naturally, the expansion and contraction action of the C-wall pressing body 19 is appropriately controlled.

【0014】尚、本発明は、本発明の精神を逸脱しない
限り種々の改変を為すことができ、そして、本発明が該
改変されたものに及ぶことは当然である。
The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

【0015】[0015]

【発明の効果】本発明は、上述せる一実施の形態にて詳
述せる如く、水平掘削装置を地盤の所定位置に建て込ん
でカッタービットによって該地盤を掘削し、そして、P
C壁体を挿入するための掘削孔を築造する際、掘削孔崩
壊防止板によって該掘削孔の左右孔壁の崩壊が阻止され
るので該掘削孔を築造するとき、注水し乍ら該掘削孔を
泥土化する操作も容易となり、且つ、PC壁体は該掘削
孔崩壊防止板間に挿入されるので、該PC壁体の該掘削
孔内への挿入動作も容易確実となる。
According to the present invention, as will be described in detail in one embodiment described above, a horizontal excavator is installed at a predetermined position on the ground, and the ground is excavated by a cutter bit.
When constructing the excavation hole for inserting the C wall, the collapse of the left and right hole walls of the excavation hole is prevented by the excavation hole collapse prevention plate. Also, since the PC wall is inserted between the excavation hole collapse preventing plates, the operation of inserting the PC wall into the excavation hole is easily and reliably performed.

【0016】又、PC壁体押付体を設けたことにより、
前記掘削孔崩壊防止板間に挿入せられるPC壁体は該P
C壁体押付体にて押圧せられ、そして、既に挿入されて
設置せられている隣接のPC壁体に圧接して双方が密着
することになる。
Also, by providing the PC wall pressing body,
The PC wall inserted between the excavation hole collapse prevention plates is
Both are pressed by the C wall pressing body, and are brought into close contact with each other by being pressed against the adjacent PC wall already inserted and installed.

【0017】更に又、該PC壁体押付体による押圧状態
で掘削すれば、掘削側のカッタービットは前記押圧され
ているPC壁体を反力受けとして地盤を掘削することに
なるので、掘削効率が著しく向上する。又、カッタービ
ットがカッターポストの背面側に回転移動してきたとき
にはガイドローラにてく字状に折曲するので、該カッタ
ービットがブラケットに衝突するようなことがなく、掘
削幅を可及的に大にして掘削することもできる等、正に
諸種の著大なる効果を奏する発明である。
Furthermore, if the excavation is performed by pressing the PC wall pressing body, the cutter bit on the excavation side excavates the ground by receiving the pressed PC wall body as a reaction force. Is significantly improved. Further, when the cutter bit is rotated to the rear side of the cutter post, the cutter bit is bent in a V-shape by the guide roller, so that the cutter bit does not collide with the bracket and the excavation width is as large as possible. It is an invention which has various kinds of remarkable effects, such as excavation.

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

【図1】本発明の一実施の形態を示し、その一部切欠側
面図。
FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.

【図2】図1のA−A線断面図。FIG. 2 is a sectional view taken along line AA of FIG.

【図3】図1のB−B線断面図。FIG. 3 is a sectional view taken along line BB of FIG. 1;

【図4】カッタ刃の正面図。FIG. 4 is a front view of the cutter blade.

【図5】従来例の水平掘削装置を地盤に建て込んだ状態
を示す側面図。
FIG. 5 is a side view showing a state in which a conventional horizontal excavator is installed on the ground.

【図6】図5の状態から地盤を掘削前進している状態を
示す側面図。
FIG. 6 is a side view showing a state where the ground is excavated and advanced from the state of FIG. 5;

【図7】図5の水平掘削装置を用いて構築した土止め壁
の斜面図。
7 is a perspective view of a retaining wall constructed using the horizontal excavator of FIG. 5;

【符号の説明】[Explanation of symbols]

1 水平掘削装置 5 カッターポスト 6 スプロケット 7 チェン 8 カッタービット 8a カッター刃 9 掘削孔 12 ブラケット 13 掘削孔崩壊防止板 19 PC壁体押付体 22 カッタービットブラケット 23 カッターピン 25 ガイドローラ 26 PC壁体 W 地盤 DESCRIPTION OF SYMBOLS 1 Horizontal excavator 5 Cutter post 6 Sprocket 7 Chain 8 Cutter bit 8a Cutter blade 9 Drill hole 12 Bracket 13 Drill hole collapse prevention plate 19 PC wall pressing body 22 Cutter bit bracket 23 Cutter pin 25 Guide roller 26 PC wall W Ground

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 側面視略長方形状であって、且つ、平面
視略箱状に形成されたカッターポストを有し、該カッタ
ーポストの上下端部にはスプロケットが枢着されてお
り、該スプロケット間に無端体状に掛け渡されたチェン
にカッタービットを固設し、該チェンの上下回動にて土
止め壁を構築するための掘削孔を水平方向に掘進して築
造する掘削装置に於て、前記カッタービットはチェンの
側面に外側に向って突設されたカッタービットブラケッ
ト間にカッタピンを固設し、該カッターピンに左右のカ
ッター刃を蝶着し、該カッター刃が掘削側と反対側の位
置に移動してきたときには、ガイドローラに押圧されて
該カッター刃がく字状に折曲できるように構成されると
共に、前記カッターポストの左右側板を後方へ延設して
ブラケット及び掘削孔崩壊防止板を形成し、更に、該左
右のブラケットの中間部にフレームを架設し、該フレー
ムに拡縮自在に形成したPC壁体押付体を取付け、前記
左右の掘削孔崩壊防止板間に挿入されるPC壁体の前面
を該PC壁体押付体にて押し付けることができるように
形成されたことを特徴とするPC壁体挿入孔水平掘削装
置。
1. A cutter post having a substantially rectangular shape in a side view and a substantially box shape in a plan view, and a sprocket is pivotally mounted on upper and lower ends of the cutter post. A cutter bit is fixed to a chain suspended endlessly between them, and a drilling device for digging a drilling hole for constructing a retaining wall in a horizontal direction by vertically rotating the chain is used in a drilling device. In the cutter bit, a cutter pin is fixed between cutter bit brackets protruding outward on the side surface of the chain, left and right cutter blades are hinged to the cutter pin, and the cutter blade is opposite to the digging side. When the cutter post is moved to the side position, the cutter blade is pressed by the guide roller so that the cutter blade can be bent in a U-shape. A collapse prevention plate is formed, and a frame is erected at an intermediate portion between the left and right brackets, and a PC wall pressing body formed to be expandable and contractable is attached to the frame, and inserted between the left and right excavation hole collapse prevention plates. A PC wall insertion hole horizontal excavation device formed so that a front surface of a PC wall can be pressed by the PC wall pressing body.
JP20510596A 1996-08-02 1996-08-02 Horizontally excavating device for insertion hole for pc wall body Pending JPH1046623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20510596A JPH1046623A (en) 1996-08-02 1996-08-02 Horizontally excavating device for insertion hole for pc wall body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20510596A JPH1046623A (en) 1996-08-02 1996-08-02 Horizontally excavating device for insertion hole for pc wall body

Publications (1)

Publication Number Publication Date
JPH1046623A true JPH1046623A (en) 1998-02-17

Family

ID=16501507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20510596A Pending JPH1046623A (en) 1996-08-02 1996-08-02 Horizontally excavating device for insertion hole for pc wall body

Country Status (1)

Country Link
JP (1) JPH1046623A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007211533A (en) * 2006-02-10 2007-08-23 Land Creative:Kk Method for removing underground structure
JP2010229627A (en) * 2009-03-25 2010-10-14 Ohbayashi Corp Earth retaining wall structure and method for constructing the same
JP2010229626A (en) * 2009-03-25 2010-10-14 Ohbayashi Corp Earth retaining wall structure and method for constructing the same
US20200095747A1 (en) * 2017-03-17 2020-03-26 Yubin Wang Foundation Construction Device and Its Construction Method
JP2020063609A (en) * 2018-10-18 2020-04-23 株式会社技研製作所 Excavation device, and burying construction method of structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007211533A (en) * 2006-02-10 2007-08-23 Land Creative:Kk Method for removing underground structure
JP4602919B2 (en) * 2006-02-10 2010-12-22 株式会社ランド・クリエイティブ Removal method of underground structure
JP2010229627A (en) * 2009-03-25 2010-10-14 Ohbayashi Corp Earth retaining wall structure and method for constructing the same
JP2010229626A (en) * 2009-03-25 2010-10-14 Ohbayashi Corp Earth retaining wall structure and method for constructing the same
JP4683138B2 (en) * 2009-03-25 2011-05-11 株式会社大林組 Retaining wall structure, method for constructing retaining wall structure
US20200095747A1 (en) * 2017-03-17 2020-03-26 Yubin Wang Foundation Construction Device and Its Construction Method
US10954653B2 (en) * 2017-03-17 2021-03-23 Yubin Wang Foundation construction device and its construction method
JP2020063609A (en) * 2018-10-18 2020-04-23 株式会社技研製作所 Excavation device, and burying construction method of structure

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