JPS63125729A - Excavator for construction of underground continuous wall with movable guide - Google Patents
Excavator for construction of underground continuous wall with movable guideInfo
- Publication number
- JPS63125729A JPS63125729A JP27077386A JP27077386A JPS63125729A JP S63125729 A JPS63125729 A JP S63125729A JP 27077386 A JP27077386 A JP 27077386A JP 27077386 A JP27077386 A JP 27077386A JP S63125729 A JPS63125729 A JP S63125729A
- Authority
- JP
- Japan
- Prior art keywords
- excavator
- guide
- main body
- drive mechanism
- underground continuous
- 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
- 238000010276 construction Methods 0.000 title description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000009412 basement excavation Methods 0.000 claims description 29
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
- E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は地中連続壁を構築する際に地山を掘削するため
に用いる掘削機の改良に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an improvement in an excavator used for excavating earth when constructing a diaphragm wall.
「従来の技術」
地中連続壁を構築する際に地山の掘削に用いる掘削機と
して従来、本体最下部にカッター装置を備えてなり、本
体上部と本体下部に油圧シリンダにより移動自在に支持
された修正ガイドを設けてなる掘削機が知られている。``Conventional technology'' Conventionally, excavators used for excavating ground when constructing underground continuous walls are equipped with a cutter device at the bottom of the main body, and are movably supported by hydraulic cylinders at the top and bottom of the main body. An excavator is known which is provided with a correction guide.
この掘削機は、カッター装置を地山に向けて吊下げられ
、カッター装置により地山を掘削しつつ下降されて地山
に掘削溝を形成する装置である。また前記修正ガイドは
、掘削溝の掘削時に、油圧シリンダによって移動されて
掘削溝の内面に当接し、これを押圧して受ける反力を利
用して掘削機の方向を修正するものである。なお、前記
掘削溝の掘削後に掘削機を引き上げ、掘削溝にコンクリ
ートの打設を行って地中連続壁が構築されるのである。This excavator is a device that is suspended with a cutter device facing the ground, and is lowered while excavating the ground with the cutter device to form an excavation groove in the ground. The correction guide is moved by a hydraulic cylinder when excavating an excavation groove, comes into contact with the inner surface of the excavation groove, and corrects the direction of the excavator using the reaction force received by pressing the guide. After excavating the excavation trench, the excavator is pulled up and concrete is poured into the excavation trench to construct the underground continuous wall.
「発明が解決しようとする問題点」
ところで、掘削に伴って地山深く下降した掘削機を引き
上げる場合には、前記修正ガイドを本体側に引き寄せた
状態から掘削機を引き上げて行っているが、掘削溝の内
壁面の状態によっては、引き上げ途中に掘削溝の内壁面
に掘削機のガイド板が接触したり、掘削溝の内壁面と掘
削機との間に掘削泥水中の土砂分が詰まって抵抗となる
といった理由から、掘削機の引き上げを円滑にできない
問題があった。"Problems to be Solved by the Invention" By the way, when an excavator that has descended deep into the earth due to excavation is to be raised, the excavator is pulled up from the state in which the correction guide is drawn toward the main body. Depending on the condition of the inner wall surface of the excavated trench, the guide plate of the excavator may come into contact with the inner wall surface of the excavated trench during lifting, or the dirt in the drilling mud may become clogged between the inner wall surface of the excavated trench and the excavator. There was a problem in that the excavator could not be pulled up smoothly because of the resistance.
また、超壁厚大深度地中連続壁を構築する場合、地山内
に、相互に離間して所要幅の２つの地中連続壁を構築し
、この後に２つの地中連続壁の間の地山を掘削し、２つ
の地中連続壁に連続するように掘削溝を形成し、２つの
地中連続壁に接続するようにコンクリートを打設して地
中連続壁を構築する工法を実施することがある。ここで
前記工法において、２つの地中連続壁の間の地山を掘削
する場合、地山とともに２つの地中連続壁の端部を掘削
機により切削して掘削溝を形成し、この掘削溝にコンク
リートの打設を行って地中連続壁を構築している。従っ
て前述の工法を実施した場合、地中連続壁の端部をも含
めて掘削した掘削機を掘削溝から引き上げる必要を生じ
るが、引き上げ時に地中連続壁の掘削部分に掘削機の修
正ガイドが接触し、掘削機の引き上げ作業に支障を来し
、安全面で問題を起こすおそれがあった。In addition, when constructing a super-thick, deep underground wall, two underground walls with the required width are constructed in the ground, separated from each other, and then the ground between the two underground walls is constructed. A construction method will be implemented in which the mountain is excavated, an excavation trench is formed so as to connect the two underground continuous walls, and concrete is poured to connect the two underground continuous walls to construct the underground continuous wall. Sometimes. In the above construction method, when excavating the ground between two underground continuous walls, an excavator is used to cut the ends of the two underground continuous walls together with the ground to form an excavated groove. concrete is being poured to construct an underground continuous wall. Therefore, when the above-mentioned method is implemented, it becomes necessary to lift the excavator that has excavated the end of the diaphragm wall from the excavation trench. There was a risk that the contact would interfere with the lifting operation of the excavator and cause safety problems.
本発明は、前記問題に鑑みてなされたもので、地山に形
成した掘削溝から掘削機を引き上げる際に、掘削溝の内
面との接触によるトラブルを防止することができ、掘削
機の引き上げ作業を簡単かつ安全にできる構成とした掘
削機を提供することを目的とする。The present invention has been made in view of the above-mentioned problems, and when an excavator is pulled up from an excavation groove formed in the ground, it is possible to prevent troubles caused by contact with the inner surface of the excavation groove. The purpose of the present invention is to provide an excavator configured to easily and safely perform the following operations.
［問題点を解決するための手段］
本発明は、前記問題点を解決するために、本体下部に他
山掘削用のカッター装置を備え、カッター装置を下向き
にした状態で地山に向けて吊り降ろされてカッター装置
により地山に掘削溝を掘削する地中連続壁構築用掘削機
において、前記本体の側部に、本体の側方に移動自在に
掘削方向修正用の複数のガイドを設け、前記本体に、ガ
イドの上部を本体の中心側に接近させるようにガイドを
傾斜させる駆動機構を付設したものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention includes a cutter device for excavating other mountains at the bottom of the main body, and suspends the cutter device toward the ground with the cutter device facing downward. In an excavator for constructing an underground continuous wall that is lowered and excavates an excavation trench in the ground with a cutter device, a plurality of guides for adjusting the excavation direction are provided on the side of the main body so as to be movable laterally of the main body, The main body is provided with a drive mechanism that tilts the guide so that the upper part of the guide approaches the center of the main body.
「作用 」
掘削機の引き上げ時に本体に対してガイドを上窄まり状
に傾斜させ、掘削溝の内壁面に対してガイドを傾斜して
対向できるために、ガイドを掘削溝の内面に接触させる
ことなく掘削機の引き上げが可能であるとともに、傾斜
したガイドの面が掘削溝の内壁面に接触した場合でも少
ない抵抗で掘削機の引き上げが可能になる。``Function'' When the excavator is pulled up, the guide is tilted upward with respect to the main body, and the guide can be tilted and opposed to the inner wall surface of the excavation groove, so that the guide comes into contact with the inner surface of the excavation groove. The excavator can be pulled up without any friction, and even if the inclined guide surface contacts the inner wall surface of the excavation trench, the excavator can be pulled up with less resistance.
「実施例」
第１図と第２図は、本発明の一実施例の掘削機Ａを示す
もので、掘削機Ａはフレーム材を組み付けて構成された
縦長の矩形枠状の本体１の最下端部にドラムカッター（
カッター装置）２を備えた構成である。なお、第１図に
おいて符号３はドラムカッター回転駆動用のモータを示
している。"Embodiment" Figures 1 and 2 show an excavator A according to an embodiment of the present invention. Drum cutter (
This configuration includes a cutter device) 2. In FIG. 1, reference numeral 3 indicates a motor for rotating the drum cutter.
前記本体ｌの４つの側面の各々には、第１図と第２図に
示すように縦長の板状の固定ガイド６゜６が、左右に所
定間隔離間して平行に設けられるとともに、前記各固定
ガイド６の上方と下方には、各々固定ガイド６を延長す
るように修正ガイド８が設けられている。即ち本体ｌに
は固定ガイド６が８個と修正ガイド８が１６個設けられ
ている。On each of the four side surfaces of the main body l, as shown in FIGS. 1 and 2, a vertically elongated plate-shaped fixed guide 6° 6 is provided in parallel with a predetermined distance from the left and right, and each of the above-mentioned Correction guides 8 are provided above and below the fixed guide 6 so as to extend the fixed guide 6, respectively. That is, the main body l is provided with eight fixed guides 6 and sixteen correction guides 8.
前記本体【の周囲に設けられた１６個の修正ガイド８の
うち、本体Ｉの前面上部側（第１図の右上部側）と後面
上部側（第１図の左上部側）の４つの修正ガイド８は、
本体上面の各コーナ部に第７図に示すように設けられた
後述の第１駆動機構Ｋを介して本体１に傾斜自在に取り
付けられ、本体ｌの前面下部側と後面下部側の４つの修
正ガイド８は後述する移動機構■を介して本体ｌに取り
付けられるとともに、本体Ｉの右側面側（第２図の右側
）と左側面側（第３図の左側）の８つの修正ガイド８は
後述する第２駆動機構りを介して本体ｌに傾斜自在に取
り付けられている。また、前記８つの固定ガイド６のう
ち、本体ｌの前部側（第１図の右側）と後部側（第１図
の左側）の４つの固定ガイド６は、第１図に示すように
ドラムカッター２を下にして本体１を鉛直にした状態に
おいて鉛直に向く゛ように本体１に固定されるとともに
、他の固定ガイド６は後述する第２駆動機構りを、介し
て後述する如く傾斜自在に本体Ｉに取り付けられている
。Of the 16 correction guides 8 provided around the main body, there are four correction guides on the upper front side (upper right side in Fig. 1) and the upper rear side (upper left side in Fig. 1) of the main body I. Guide 8 is
It is attached to the main body 1 so as to be tiltable via a first drive mechanism K, which will be described later, provided at each corner of the upper surface of the main body as shown in FIG. The guides 8 are attached to the main body I via a moving mechanism ■ which will be described later, and the eight correction guides 8 on the right side (right side in Fig. 2) and left side (left side in Fig. 3) of the main body I will be described later. It is tiltably attached to the main body l via a second drive mechanism. Furthermore, among the eight fixed guides 6, the four fixed guides 6 on the front side (right side in FIG. 1) and rear side (left side in FIG. 1) of the main body l are attached to a drum as shown in FIG. When the main body 1 is vertical with the cutter 2 facing down, it is fixed to the main body 1 so as to face vertically, and the other fixed guide 6 can be tilted freely as described later through a second drive mechanism described later. It is attached to main body I.
ところで、本体１の上部に設けられて各修正ガイド８を
傾斜させる第１駆動機構には全て同等の構成であるので
、本体前面上部に第３図あるいは第４図に示すように設
けられた第１駆動機構Ｋを例にとって以下に説明する。By the way, since all the first drive mechanisms provided at the upper part of the main body 1 for tilting each correction guide 8 have the same structure, the first drive mechanism provided at the upper part of the front face of the main body 1 as shown in FIG. 3 or 4 is the same. 1 drive mechanism K will be explained below as an example.
この第１駆動機構には、本体上面のコーナ部であって、
前記固定ガイド６の上方に、本体ｌの前方側（第３図の
右側）に向いて固定された第１シリンダ１０と、固定ガ
イド６より若干上方の本体前面に固定された軸受Ｉ２と
、前記シリンダＩＯのピストンロッド１１と前記軸受１
２に上下部をピン結合されて支持された第１プレート１
３とから構成されている。そして、この第１プレート１
３に修正ガイド８が移動機構■を介して取り付けられて
いる。即ち、前記第１プレート１３の上部と下部に取り
付けられた支持ブラケット１４．１４にリンク片１５．
１５がピン結合され、各リンク片１５の先端に修正ガイ
ド８がピン結合されるとともに、リンク片１５には修正
用シリンダ１６が接続されていて、この修正用シリンダ
１６のピストンロッドを伸縮することによって修正ガイ
ド８を第１プレート１３から離れるように本体１の前方
側に移動で゛きるようになっており、移動機構■は、支
持ブラケットＩ ４ 、 ｌ ４とリンク片１５．１５
と修正用シリンダ１６とから構成されている。The first drive mechanism includes a corner portion of the upper surface of the main body,
A first cylinder 10 is fixed above the fixed guide 6 facing the front side of the main body l (right side in FIG. 3), a bearing I2 is fixed to the front surface of the main body slightly above the fixed guide 6, Piston rod 11 of cylinder IO and the bearing 1
A first plate 1 whose upper and lower parts are pin-coupled to and supported by 2.
It is composed of 3. And this first plate 1
A correction guide 8 is attached to 3 via a moving mechanism (2). That is, link pieces 15.14 are attached to support brackets 14.14 attached to the upper and lower parts of the first plate 13.
15 are connected with pins, and a correction guide 8 is connected with a pin to the tip of each link piece 15, and a correction cylinder 16 is connected to the link piece 15, and the piston rod of this correction cylinder 16 can be expanded or contracted. The correction guide 8 can be moved toward the front side of the main body 1 away from the first plate 13, and the moving mechanism (2) is made up of support brackets I4, I4 and link pieces 15 and 15.
and a correction cylinder 16.
なお、前記第１シリンダＩＯのピストンロッド１１を伸
縮させることにより、軸受１２を支点として第１プレー
ト１３を所定角度回動できるようになっている。なおこ
こで、掘削機Ａを鉛直に吊り下げた状態において第１シ
リンダ１０のピストンロッド１１を最大伸長した場合、
修正ガイド８が鉛直に向くようにされている。また、本
体ｌの各固定ガイド６の下方には、前記移動機構Ｉと同
等の構成の移動機構Ｉを介して本体Ｉと離間自在に修正
ガイド８が取り付けられている。Note that by expanding and contracting the piston rod 11 of the first cylinder IO, the first plate 13 can be rotated by a predetermined angle using the bearing 12 as a fulcrum. Here, when the piston rod 11 of the first cylinder 10 is extended to the maximum with the excavator A suspended vertically,
The correction guide 8 is oriented vertically. Further, below each fixed guide 6 of the main body I, a correction guide 8 is attached via a moving mechanism I having the same structure as the moving mechanism I, so as to be able to be separated from the main body I.
一方、前記第２駆動機構りは、本体Ｉの左側部側（第２
図の左側）と右側部側（第２図の右側）の各々に設けら
れ、双方が同等の構成であるので、本体１の右側部側に
第５図あるいは第６図に示すように設けられている第２
駆動機構りを例にとって以下に説明する。On the other hand, the second drive mechanism is located on the left side of the main body I (second drive mechanism).
(left side in the figure) and right side (right side in Figure 2), and since both have the same configuration, it is installed on the right side of the main body 1 as shown in Figure 5 or 6. The second
The drive mechanism will be explained below by way of example.
この第２駆動機構りは、本体上面の右側部側中央に第５
図にも示すように固定された第２シリンダＩ９と、本体
１の右側面下部に固定された軸受２０と、本体Ｉの上部
から下部にわたる長さを有し、前記第２シリンダ１９の
ピストンロット２１と前記軸受２０にピン結合された第
２プレート２２とからなっていて、前記第２シリンダ１
９のピストンロッド２１を伸縮することにより軸受２０
を支点として第２プレート２２を傾斜できるようになっ
ている。また、前記第２プレート２２の上部と下部には
修正ガイド８が前記移動機構【を介して本体ｌの外方に
移動自在に設けられ、第２プレートの中央側には固定プ
レート６が固定されている。なお、固定プレート６は、
掘削機Ａを鉛直に吊り下げた状態において前記第２シリ
ンダ１９のピストンロッド２１を最大伸長した場合、鉛
直に向くようにピストンロッド２■に取り付けられてい
る。This second drive mechanism is located in the center of the right side of the top surface of the main body.
As shown in the figure, the second cylinder I9 has a fixed second cylinder I9, a bearing 20 fixed to the lower right side of the main body 1, and a piston rod of the second cylinder 19 having a length extending from the upper part to the lower part of the main body I. 21 and a second plate 22 pin-coupled to the bearing 20, the second cylinder 1
By expanding and contracting the piston rod 21 of 9, the bearing 20
The second plate 22 can be tilted using the fulcrum as a fulcrum. Further, correction guides 8 are provided at the upper and lower portions of the second plate 22 so as to be movable to the outside of the main body l via the moving mechanism, and a fixed plate 6 is fixed to the center side of the second plate. ing. Note that the fixed plate 6 is
When the piston rod 21 of the second cylinder 19 is extended to the maximum with the excavator A suspended vertically, it is attached to the piston rod 2 so as to face vertically.
第８図は、掘削機Ａに設けられる第２シリンダ１９．１
９の作動用油圧回路の一例を示すものである。この油圧
回路は、複動型の第２シリンダ１９．１９と油タンク２
５と油圧源２６に連結する配管系に４ボ一ト切換式の電
磁弁２７を組み込み、この電磁弁２７と各第２シリンダ
＋ ９．１９との間の配管系に遮断弁２８を組み込んで
構成された回路である。この回路にあっては、電磁弁２
７を作動させて回路の切り替えを行うことにより第２シ
リンダ＋ ９．１９のピストンロッドを伸縮させること
ができるとともに、遮断弁２８を作動させて管路を閉じ
ることにより第２シリンダ１９のピストンロッドを任意
の位置で固定できるようになっている。なお、第１シリ
ンダ１０を作動させる油圧回路も第８図に示す油圧回路
と同等の回路が採用されている。FIG. 8 shows a second cylinder 19.1 provided in excavator A.
9 shows an example of the operating hydraulic circuit of No. 9. This hydraulic circuit includes a double-acting second cylinder 19.19 and an oil tank 2.
A four-bottom switching type solenoid valve 27 is installed in the piping system connected to the hydraulic power source 26 and the hydraulic power source 26, and a shutoff valve 28 is installed in the piping system between the solenoid valve 27 and each second cylinder +9.19. This is a constructed circuit. In this circuit, solenoid valve 2
By activating 7 to switch the circuit, the piston rod of the second cylinder + 9.19 can be extended or contracted, and by activating the shutoff valve 28 to close the pipe line, the piston rod of the second cylinder 19 can be expanded or contracted. can be fixed in any position. Note that the hydraulic circuit for operating the first cylinder 10 is also the same as the hydraulic circuit shown in FIG. 8.
前記構成の掘削機Ａは、本体１の上部を第２図に示すよ
うに吊りワイヤＷで吊り支持し、ドラムカッター２を下
向きにした状態で地山に向けて降下され、ドラムカッタ
ー２により地山を掘削して掘削溝を掘削する。The excavator A having the above configuration has the upper part of the main body 1 suspended and supported by a hanging wire W as shown in FIG. 2, and is lowered toward the ground with the drum cutter 2 facing downward. Excavate the mountain and excavate the excavation trench.
前記掘削作業に際し、第１シリンダ１０・・・と第２シ
リンダ１９・・・のピストンロッドを最大伸長して各修
正ガイド８と固定ガイド６．６を鉛直に向くように調節
しておく。この状態で掘削機Ａを下降させて所要深さの
掘削溝を形成する。掘削溝を掘削している間に、掘削機
Ａの方向を修正する場合は、各修正シリンダ１６のいく
つかを適宜作動させ、修正ガイド８を掘削溝の内面に押
し付け、押し付けにより得られる反力を利用して掘削機
Ａの掘削方向を制御することができる。 そして所定深
さの掘削溝を形成したならば、掘削機Ａの引き上げ作業
を開始する。ここで掘削機Ａの引き上げ時に、掘削溝の
内面に凹凸を生じていたり、掘削機Ａと内壁面との間に
土砂等が詰まっていた場合等には、掘削機Ａが内壁面の
凸部や掘削溝内の土砂に接触して掘削機Ａの引抜抵抗が
増大するおそれがある。During the excavation work, the piston rods of the first cylinders 10... and the second cylinders 19... are extended to the maximum, and each correction guide 8 and fixed guide 6.6 are adjusted so as to face vertically. In this state, the excavator A is lowered to form an excavation groove of a required depth. When correcting the direction of the excavator A while excavating an excavation trench, some of the correction cylinders 16 are operated as appropriate, and the correction guide 8 is pressed against the inner surface of the excavation trench, and the reaction force obtained by the pressing is The excavation direction of the excavator A can be controlled using this. After forming an excavation groove of a predetermined depth, the excavator A starts lifting work. When pulling up the excavator A, if there are irregularities on the inner surface of the excavation trench or if dirt or the like is clogged between the excavator A and the inner wall, the excavator There is a possibility that the pull-out resistance of the excavator A may increase due to contact with earth and sand in the excavation trench.
そこで掘削機Ａの引き上げ作業に際しては、本体ｌの上
部側の第１シリンダＩＯ・・・と第２シリンダ１９．１
９のピストンロッドをいずれも縮退させて各修正ガイド
８の上部と各固定ガイド６の上部が掘削機Ａの中心側に
接近するように修正ガイド８と固定ガイド６を傾斜させ
る。以上の操作により修正ガイド８の表面と固定ガイド
６の表面を第４図と第６図に示すように上向きに（即ち
、上窄まり状に）傾斜させることができる。そしてこの
状態にあっては、掘削時にガイド６．８を第３図と第５
図に示すように位置させていた場合よりも内側（即ち本
体側）に各ガイド６．８を引き込むことができるために
、各ガイド６．８と掘削溝の内面との接触を防止するこ
とができる。なお、各ガイド６．８と掘削溝の内面とが
接触することが生じても各ガイド６．８の表面が傾斜状
態で掘削溝の内面に接触するために引き上げ時の抵抗は
少なくなる。Therefore, when lifting the excavator A, the first cylinder IO... and the second cylinder 19.1 on the upper side of the main body l are
All of the piston rods 9 are retracted, and the correction guides 8 and the fixed guides 6 are tilted so that the upper part of each correction guide 8 and the upper part of each fixed guide 6 approach the center side of the excavator A. By the above operations, the surface of the correction guide 8 and the surface of the fixed guide 6 can be tilted upward (that is, in an upwardly tapered shape) as shown in FIGS. 4 and 6. In this state, the guide 6.8 should be placed in the positions shown in Figures 3 and 5 during excavation.
Since each guide 6.8 can be pulled inward (i.e., toward the main body side) compared to when it is positioned as shown in the figure, it is possible to prevent each guide 6.8 from coming into contact with the inner surface of the excavated groove. can. Note that even if each guide 6.8 comes into contact with the inner surface of the excavated groove, the surface of each guide 6.8 contacts the inner surface of the excavated groove in an inclined state, so that the resistance during pulling up is reduced.
また、超壁厚大深度地中連続壁を構築する場合、地山内
に、相互に離間して所要幅の２つの地中連続壁を構築し
、この後に、２つの地中連続壁の間の地山を掘削し、２
つの地中連続壁に接続するように掘削溝を形成し、２つ
の地中連続壁に連続するようにコンクリートを打設して
地中連続壁を構ｌｌ−
築する工法を実施することがある。ここで前記工法にお
いて、２つの地中連続壁の間の地山を掘削機Ａを用いて
掘削した場合には、地山とともに地中連続壁の端部を掘
削機により切削して掘削溝を形成する。In addition, when constructing a super-thick, deep underground wall, two underground walls with the required width are constructed in the ground, separated from each other, and then a wall between the two underground walls is constructed. Excavating the ground, 2
A construction method may be used in which an excavation trench is formed so as to connect to one underground continuous wall, and concrete is poured so as to connect the two underground continuous walls to construct an underground continuous wall. . In the above construction method, when excavating machine A is used to excavate the ground between two underground continuous walls, the excavator cuts the end of the underground continuous wall together with the ground to form an excavation trench. Form.
そして、この掘削作業後に、掘削機の引き上げを行う場
合、前記２つの地中連続壁の端部の切削部分に掘削機が
接触するおそれがあるが、前記のようにシリンダ１０．
１９を作動させて修正ガイド８と固定ガイド６をいずれ
も傾斜させておけば、掘削溝内面との接触を防止でき、
接触した場合でも引き上げ抵抗を減少することができる
。このため、安全かつ容易に引き上げ作業ができる効果
がある。When the excavator is pulled up after this excavation work, there is a risk that the excavator will come into contact with the cut portions of the ends of the two underground continuous walls, but as described above, the cylinder 10.
19 to tilt both the correction guide 8 and the fixed guide 6, it is possible to prevent contact with the inner surface of the excavated groove.
Even in the case of contact, the pulling resistance can be reduced. Therefore, there is an effect that the lifting work can be carried out safely and easily.
ところで前記実施例にあっては、本体ｌの左右両側部側
の固定ガイド６と修正ガイド８を支持プレート２２に取
り付けて第２駆動機構りにより一括して傾斜できる構成
としたが、本体１の前面側と後面側にも支持プレート２
２を設け、前面側と後面側の固定ガイド６と修正ガイド
８をも一括して傾斜できる構成としても良く、また、本
体Ｉの総ての固定ガイド６を本体ｌに固定し、修正ガイ
ド８のみを第１駆動機構Ｋにより傾斜できる構成にして
も差し支えない。By the way, in the above embodiment, the fixing guide 6 and the correction guide 8 on both left and right sides of the main body 1 are attached to the support plate 22 so that they can be tilted all at once by the second drive mechanism. Support plate 2 on the front and rear sides
2, and the fixed guides 6 and correction guides 8 on the front side and the rear side can also be tilted all at once. Alternatively, all the fixed guides 6 of the main body I can be fixed to the main body I, and the correction guides 8 It is also possible to adopt a configuration in which only the first drive mechanism K can tilt.
「発明の効果」
以上説明したように本発明は、掘削機の本体に設けるガ
イドを掘削機に設けた駆動機構により傾斜自在に構成し
たため、掘削溝を掘削して地山深く掘り進んだ掘削機を
引き上げる際に、掘削溝の内面に凹凸があった場合、あ
るいは、掘削溝の内周面と掘削機の間に土砂が存在して
いた場合であっても掘削溝内面との接触を防止すること
ができ、接触した場合であっても少ない抵抗で掘削機を
引き上げることができる。従って掘削機の引き上げ作業
を安全かつ容易に実施できる効果がある。"Effects of the Invention" As explained above, the present invention has a structure in which the guide provided on the main body of the excavator can be tilted freely by the drive mechanism provided on the excavator. This prevents contact with the inner surface of the excavated groove when pulling up the excavated groove, even if the inner surface of the excavated groove is uneven or if there is earth and sand between the inner circumferential surface of the excavated groove and the excavator. Even in the event of contact, the excavator can be pulled up with little resistance. Therefore, there is an effect that the lifting work of the excavator can be carried out safely and easily.
第１図ないし第８図は、本発明の一実施例の掘削機を示
すもので、第１図は正面図、第２図は側面図、第３図は
第１駆動機構を示す側面図、第４図は修正ガイドを傾斜
させた状態を示す側面図、第５図は第２駆動機構を示す
側面図、第６図は第２プレートの傾斜状態を示す側面図
、第７図は本体上部に設けられたシリンダを示す平面図
、第８図はシリンダ作動用の油圧回路図である。
Ａ・・・・・・掘削機、 １・・・・・・本体、
２・・・・・カッター装置、
６・・・・・・固定ガイド、 ８・・・・・・修正ガ
イド、Ｋ・・・・・・第１駆動機構、Ｌ・・・・・・第
２駆動機構、ＩＯ・・・・・第１シリンダ、
１９・・・・・・第２シリンダ、
■・・・・移動機構。1 to 8 show an excavator according to an embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a side view showing the first drive mechanism. Figure 4 is a side view showing the correction guide in a tilted state, Figure 5 is a side view showing the second drive mechanism, Figure 6 is a side view showing the second plate in a tilted state, and Figure 7 is the upper part of the main body. FIG. 8 is a plan view showing a cylinder provided in the cylinder, and FIG. 8 is a hydraulic circuit diagram for cylinder operation. A... Excavator, 1... Body,
2...Cutter device, 6...Fixed guide, 8...Correction guide, K...First drive mechanism, L...Second Drive mechanism, IO...first cylinder, 19...second cylinder, ■...movement mechanism.
Claims (1)
装置を下向きにした状態で地山に向けて吊り降ろされて
地山に掘削溝を掘削する地中連続壁構築用掘削機におい
て、前記本体の側部には、本体の姿勢修正用または姿勢
安定用の複数のガイドが本体の側方に移動自在に設けら
れるとともに、前記ガイドには、ガイドの上部を本体の
中心側に接近させるようにガイドを傾斜させる駆動機構
が付設されてなることを特徴とする可動ガイドを有する
地中連続壁構築用掘削機。An excavator for constructing an underground continuous wall that is equipped with a cutter device for excavating the ground at the bottom of the main body, and is suspended toward the ground with the cutter device facing downward to excavate an excavation trench in the ground. A plurality of guides for correcting or stabilizing the posture of the main body are provided on the sides of the main body so as to be movable to the sides of the main body, and the guides are provided with a plurality of guides so as to bring the upper part of the guide closer to the center side of the main body. An excavator for constructing an underground continuous wall having a movable guide, characterized in that it is equipped with a drive mechanism for tilting the guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27077386A JPH0756138B2 (en) | 1986-11-13 | 1986-11-13 | Excavator for construction of continuous underground wall with movable guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27077386A JPH0756138B2 (en) | 1986-11-13 | 1986-11-13 | Excavator for construction of continuous underground wall with movable guide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63125729A true JPS63125729A (en) | 1988-05-28 |
| JPH0756138B2 JPH0756138B2 (en) | 1995-06-14 |
Family
ID=17490793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27077386A Expired - Fee Related JPH0756138B2 (en) | 1986-11-13 | 1986-11-13 | Excavator for construction of continuous underground wall with movable guide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0756138B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2771429A1 (en) * | 1997-11-25 | 1999-05-28 | Sol Comp Du | VERTICAL CORRECTION DRILL BUCKET |
| FR2806112A1 (en) * | 2000-03-13 | 2001-09-14 | Cie Du Sol | Trench cutting tool has inflatable side chambers to apply pressure to trench sides and hold cutting rotors in position |
| JP2022013000A (en) * | 2020-07-02 | 2022-01-18 | 大成建設株式会社 | Blade spreading excavator and wall pile construction method |
-
1986
- 1986-11-13 JP JP27077386A patent/JPH0756138B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2771429A1 (en) * | 1997-11-25 | 1999-05-28 | Sol Comp Du | VERTICAL CORRECTION DRILL BUCKET |
| EP0919669A2 (en) * | 1997-11-25 | 1999-06-02 | Compagnie Du Sol | Grab bucket with verticality correction |
| EP0919669A3 (en) * | 1997-11-25 | 1999-12-08 | Compagnie Du Sol | Grab bucket with verticality correction |
| FR2806112A1 (en) * | 2000-03-13 | 2001-09-14 | Cie Du Sol | Trench cutting tool has inflatable side chambers to apply pressure to trench sides and hold cutting rotors in position |
| WO2001068990A1 (en) * | 2000-03-13 | 2001-09-20 | Compagnie Du Sol | Drilling apparatus for hard ground |
| JP2022013000A (en) * | 2020-07-02 | 2022-01-18 | 大成建設株式会社 | Blade spreading excavator and wall pile construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0756138B2 (en) | 1995-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |