JP2843949B2 - Underground wall construction equipment - Google Patents

Underground wall construction equipment

Info

Publication number
JP2843949B2
JP2843949B2 JP25268790A JP25268790A JP2843949B2 JP 2843949 B2 JP2843949 B2 JP 2843949B2 JP 25268790 A JP25268790 A JP 25268790A JP 25268790 A JP25268790 A JP 25268790A JP 2843949 B2 JP2843949 B2 JP 2843949B2
Authority
JP
Japan
Prior art keywords
tower
stirring
shaft
turning
wire rope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP25268790A
Other languages
Japanese (ja)
Other versions
JPH04131421A (en
Inventor
清則 竹田
正克 山本
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.)
KITAGAWA TETSUKOSHO KK
Original Assignee
KITAGAWA TETSUKOSHO 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 KITAGAWA TETSUKOSHO KK filed Critical KITAGAWA TETSUKOSHO KK
Priority to JP25268790A priority Critical patent/JP2843949B2/en
Publication of JPH04131421A publication Critical patent/JPH04131421A/en
Application granted granted Critical
Publication of JP2843949B2 publication Critical patent/JP2843949B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION 【産業上の利用分野】[Industrial applications]

本発明は、ビル建設の基礎工事等において短工期かつ
低廉な地中連続壁構築工法として近年普及著しい現位置
土砂混合工法に使用する装置に関し、更に詳しくは、撹
拌羽根を有する多連の撹拌軸を地盤に回転貫入しながら
撹拌軸選択より硬化剤や止水剤を吐出して土と混合撹拌
し、所定の深さに到達後、回転撹拌しながら引抜き、1
本の混合撹拌柱を施工した後、一部重複して隣接する混
合撹拌柱を施工し、これを繰返して土留めや止水のため
の連続壁を地中に構築する装置に関する。
The present invention relates to an apparatus used in an in-situ sediment mixing method, which has recently become very popular as an inexpensive underground continuous wall construction method in a short period of time and inexpensive in the foundation work of building construction, and more specifically, a multiple stirring shaft having stirring blades. While rotating and penetrating into the ground, a hardening agent or a water-stopping agent is discharged from the stirring shaft selection and mixed with the soil and stirred.
The present invention relates to an apparatus for constructing a continuous wall for soil retaining and water blocking by repeating the mixing and stirring columns adjacent to each other after constructing the mixing and stirring columns, and repeating the same.

【従来技術及びその問題点】[Prior art and its problems]

従来この種の装置は、無限軌道を有す走行装置及び、
エンジンや油圧機器や制御操作部等を搭載して走行装置
上で旋回可能となした旋回部からなるベースマシーン
に、下部を旋回部の前部で支持され、かつ上部を旋回部
の後部と2本のバックステーで連結して支持されるタワ
ーを装着し、さらにタワー前部には撹拌軸回転駆動部や
横一列に配した多連の撹拌軸及び撹拌軸を抱えて回転自
由に支持するシャフトガイドを、タワー頂部のトップシ
ーブからワイヤーロープによりタワーに案内されて昇降
自在に懸垂している。 従来装置では施工において、地中に貫入した撹拌軸を
引抜く際に生じる引抜き反力を、タワーを介してベース
マシーンが受けるため、撹拌軸の引抜き工程で前方への
転倒を生じない重量を有する大型のベースマシーンが必
要となって装置が大型化することから、施工現場へは装
置を分割して搬入し、施工現場で各部品の装着や、幾多
のワイヤーロープの掛け通しなどの組立て作業を要し、
施工終了後の分解作業も要すことから施工能率が低いと
共に、施工現場は、少なくとも撹拌駆動部や撹拌軸を仮
置きし、ベースマシーン及び装置の組立用クレーンを配
し、かつ分割して施工現場に搬入したタワーを地上に倒
した状態で組立てるための広さを必要とする。 従って、広い道路から入り込んだ小規模ビルの建設現
場では、ベースマシーンを積載した大型トレーラーの通
行が可能な導入路を確保できないとか、装置の組立てに
要す施工現場面積を有さないこと等から、従来装置では
現位置土砂混合工法による地中連続壁の施工ができない
欠点があった。 さらに従来装置では、ベースマシーンの旋回中心とタ
ワーとの距離変更は、前述転倒の危険性があることから
小範囲に制限され、かつタワーに装着した撹拌駆動部を
懸垂するワイヤーロープがタワー頂部に固定したトップ
シーブを介してベースマシーンに搭載したウインチに連
続しているため、タワー自体の旋回も該ワイヤーロープ
がドップシーブで脱索する危険性があることから小範囲
に制限される。 従って、ベースマシーンの移動なくして施工できる範
囲は極めて小さく、順次連続壁の施工を行う上で頻繁に
ベースマシーンの移動を要し、都度施工位置へ測量によ
り撹拌軸の誘導位置決め作業を要することから施工能率
が悪く、かつ、大型装置の頻繁な移動に伴い施工現場の
安全性が損われる欠点があった。
Conventionally, this type of device is a traveling device having an endless track, and
A base machine comprising a turning section mounted on the traveling device and mounted with an engine, hydraulic equipment, a control operation section, etc., has a lower part supported by a front part of the turning part and an upper part formed by a rear part of the turning part. A tower that is connected and supported by a backstay, is mounted, and furthermore, a stirring shaft rotation drive unit and a plurality of stirring shafts arranged in a row in a row at the front of the tower and a shaft that freely rotates and supports the stirring shaft. The guide is suspended from the top sheave at the top of the tower by a wire rope guided by the tower. With the conventional equipment, in the construction, since the base machine receives the pulling reaction force generated when pulling out the stirring shaft that penetrates into the ground via the tower, it has a weight that does not cause forward fall in the drawing process of the stirring shaft. Since a large base machine is required and the equipment becomes large, the equipment is divided and transported to the construction site, where assembly work such as mounting each part and hanging many wire ropes is performed at the construction site. In short,
The work efficiency is low because disassembly work after completion of the work is required, and at the work site, at least the stirring drive unit and the stirring shaft are temporarily placed, the base machine and the crane for assembling the equipment are arranged, and the work is divided and executed. A space is needed to assemble the tower that has been brought to the site while it is being dropped on the ground. Therefore, at the construction site of a small building that has entered from a wide road, it is not possible to secure an introduction path that allows the passage of a large trailer loaded with a base machine, or because there is no construction site area required for assembling the equipment. However, the conventional apparatus has a drawback that the underground continuous wall cannot be constructed by the in-situ earth / sand mixing method. Further, in the conventional device, the change in the distance between the turning center of the base machine and the tower is limited to a small range due to the risk of the above-mentioned overturn, and a wire rope hanging from the stirring drive unit mounted on the tower is provided at the top of the tower. Since it is continuous with the winch mounted on the base machine via the fixed top sheave, the turning of the tower itself is also limited to a small range because there is a risk that the wire rope may escape from the dop sheave. Therefore, the range that can be constructed without moving the base machine is extremely small, and the frequent movement of the base machine is required in order to construct the continuous wall in sequence, and the positioning of the stirrer shaft is required by surveying the construction position each time. The construction efficiency is poor, and the safety of the construction site is impaired due to the frequent movement of large equipment.

【問題点を解決するための手段】[Means for solving the problems]

撹拌羽根を有する撹拌軸と、該撹拌軸を昇降案内する
タワーと、該タワーを旋回させる旋回手段を備える地中
連続壁施工装置において、前記旋回手段が旋回手段の旋
回中心部に空間を形成する中空部を備え、該中空部に撹
拌軸を懸垂して昇降せしめるワイヤーロープを貫通させ
る構造とする。
In an underground continuous wall construction apparatus having a stirring shaft having stirring blades, a tower for guiding the stirring shaft up and down, and a turning means for turning the tower, the turning means forms a space at a turning center of the turning means. A hollow portion is provided, and a wire rope is suspended through the hollow portion to raise and lower the stirring shaft.

【発明の実施例】DESCRIPTION OF THE PREFERRED EMBODIMENTS

以下、本発明をさらに具体的に明らかにするために、
その実施例を図面に基づいて詳細に説明する。 第1図は施工可能な状態にある実施例の装置全体を示
し、撹拌羽根を有す多連の撹拌軸1に伝達軸2を介して
回転力を与える撹拌駆動部3は、上部にシーブを有する
ハンガー4により撹拌駆動部昇降ワイヤーロープ5で懸
垂している。 多連の撹拌軸1は抱えて回転自在に支えるシャフトガ
イド6は、シャフトガイド昇降ワイヤーロープ7で懸垂
し、シャフトガイド6及び撹拌駆動部3はタワー8に案
内されて個々に昇降する。多分割式のタワー8は、下端
を基台12で支持され、上部は旋回手段13を介してベース
マシーンとなるホイールクレーン17のブーム14先端にピ
ン15により、前後方向に揺動可能、かつピン15以下の装
置全体を懸垂可能に連結している。タワー8は分割部フ
ランジをボルト締めにより連結し、該フランジ後部には
ピンによる仮連結を行うためのピンブラケット9を有
し、さらに最上部タワーには前述シャフトガイド昇降ワ
イヤーロープ7をタワーの後方に貫通させる貫通穴10及
び転向シーブ11を配すと共に、後述ベースマシーンの走
行移動時にハンガー4をタワーに連結するためのブラケ
ット16を有している。 本装置による施工は、撹拌軸が所定の打設位置となす
よう装置を設定した後、撹拌軸1を回転して撹拌軸先端
より吐出する硬化剤や止水剤を土と混合撹拌しながら、
主として撹拌駆動部3の重量により地中に貫入する。所
定の深さに到達後もさらに混合撹拌しながら、ワイヤー
ロープ5の巻込みにより撹拌駆動部と共に撹拌軸1を上
昇せしめて引抜き、1本の施工柱を築く。貫入力が不足
する場合は、ベースマシーンに備えたウインチまたはタ
ワーにウインチを備えて、ワイヤーロープにより撹拌駆
動部を下方に引降す強制貫入装置を備えてもよい。 第2図は、施工可能な状態にある他の実施例の装置全
体を示し、撹拌羽根を有する多連の撹拌軸1は多角形の
外周形状有す伝達軸21を介して撹拌駆動部22から回転力
及び地中への貫入引抜力を得る。撹拌駆動部22は、回転
出力軸の回転中心を中空にして伝達軸21を貫通させ、該
回転出力軸に一体とした複数のローラーを多角形外周の
各面に夫々あてがい、回転力を伝達軸22に伝達しながら
伝達軸の軸芯方向の移動、すなわち昇降自由となす構成
とし、かつ撹拌軸20の貫入力及び引抜力となる撹拌駆動
部の自重及び撹拌駆動部昇降ワイヤーロープ23の巻上げ
により得る撹拌駆動部の上昇力を伝達軸へ伝達するため
に、前述回転出力軸に貫通した伝達軸の軸芯方向の移動
を任意に束縛する手段を備えている。またホイールクレ
ーン17のブーム14の頂部には油圧シリンダー25の伸縮に
より任意に起伏する可倒ジブ26を備え、該ジブに設けた
シーブへ、先端にフックを有してベースマシーンのウイ
ンチに巻取られるワイヤーロープ27を掛けている。 なお、他の構成は第1図に示す実施例と同じであり、
前述強制貫入装置を備えてもよい。 第3図は、タワー下部及び基台を示し、基台31はタワ
ー下部の角錘部32を差し込む複数の角穴33を配すと共
に、撹拌軸1の引抜反力や装置の重量などを係る荷重を
支えうる強度を有して地面に敷設されている。該角穴は
多連の撹拌軸1による施工性35が所定の間隔36、方向及
び配列となすように配している。 複数個の基台を順次敷替えしながら施工すれば高能率
である。 第4図はタワーの旋回手段を含むタワー上部の断面を
示し、旋回中心部を中空とした旋回ベアリング41の下部
に旋回フレーム42をボルトにより固接し、旋回ベアリン
グ41の上部には旋回ブラケット43をボルトにより固接し
ている。旋回ベアリング41の外輪外周を歯車とし、内輪
はボール44のほぼ中間で上下に分割し、ボルト45で上下
の内輪を固接している。旋回ブラケット43の頂部でベー
スマシーンのブームトップブラケット46とピン47でブー
ムの前後方向に揺動自在に連結し、旋回ブラケットのピ
ン位置は施工可能な状態にあるピン47以下の装置を、自
由懸垂した場合にタワー下端が若干前方に出る状態、す
なわちピン47以下の装置が若干後方に倒れた姿勢となし
ている。ベースマシーンに搭載したウインチから多列の
トップシーブ48及び旋回ブラケットシーブ49に掛け通さ
れた複数本のワイヤーロープの内、1本はワイヤーロー
プが無負荷時にバネ50の作用で起き上がって、本装置の
最前端以後に収納できる可倒式シーブ51を介して先端に
フック52を有した雑吊ワイヤーロープ53とし、本装置の
組立てや分解及び未硬化の施工性に補強材となす形鋼の
立て込みなどに使用する。但し、第2図に示す実施例で
は、可倒ジブ先端のシーブに掛け通したワイヤーロープ
で上記作業を行うため、可倒シーブ51は備えていない。
旋回フレーム前部に配したシーブ54と撹拌駆動部を吊下
げるハンガー4のシーブ55に掛け通された過半駆動部昇
降ワイヤーロープ5及びシャフトガイド昇降ワイヤーロ
ープ7は旋回ベアリング41の中空部のほぼ旋回中心を上
下に貫通して前述旋回ブラケットシーブ49及びトップシ
ーブ48を介してベースマシーンに搭載したウインチへ夫
々係接されている。 第5図は第4図のa矢視図で、外周を歯車とした旋回
ベアリングの外輪外周歯部に噛合う小歯車61を出力軸に
有する減速機付電動機62を旋回フレーム42の側面に配し
て、該電動機の駆動により旋回フレーム以下の装置の旋
回を行う。なお、減速機付電動機62は油圧モーターとし
てもよい。 以上詳細記した実施例の装置において、施工中に発生
する撹拌軸の引抜反力を地面が負荷するため、従来装置
のベースマシーンに比べて軽量小型であるトラッククレ
ーンやホイールクレーンをベースマシーンとすることが
可能となったことから、装置全体が小型軽量化し、かつ
ブームの伸縮及び起伏によってベースマシーンと施工位
置との距離変更範囲が拡大したこと、旋回手段の旋回中
心に係るワイヤーロープを貫通させたことから、旋回範
囲も拡大したことによって第6図に示すようにベースマ
シーン17を1ケ所に固定してブーム14の旋回、伸縮、起
伏動作及び旋回手段13の駆動により広い範囲の施工を可
能にした。また、タワー下端を角錘形状とし、旋回手
段、タワー、撹拌駆動部、伝達軸、撹拌軸等からなるブ
ーム先端ピン以下の装置部(以後撹拌装置と称す)を若
干後方に傾倒した状態に自由懸垂でき、かつ角穴を有す
基台を設けたことから、隣接したビルに極めて接近して
施工を行う場合も、撹拌装置を自由懸垂してタワー下端
の角錘部を、予め所定の位置に敷設した基台の角穴に合
せ置き、ブームを伸ばしてタワーを鉛直に起こせば隣接
したビルに干渉する危険もなく、速やかに撹拌装置の位
置決めができると共に、基台の使用により測量作業を軽
減した。 さらに、本装置の分割手順を第1図を用いて次に述べ
る。 (1) シャフトガイド6を地上に降した後、シャフト
ガイド昇降ワイヤーロープ7の連結を外し、ブーム14を
起こして撹拌装置を持上げて、シャフトガイド6を撹拌
軸の下方に抜き外す。 (2) 多分割式撹拌軸1の最下段撹拌軸上部に転倒防
止のための前述雑吊りワイヤーロープを掛けた後、最下
段撹拌軸を切り放し、雑吊りワイヤーロープを徐々にゆ
るめて地上に倒す。撹拌駆動部3と共に撹拌軸1及び伝
達軸2を下降し、前記作業を順次繰返して撹拌軸及び伝
達軸を分解する。 (3) 撹拌軸1及び伝達軸2の分割後に撹拌駆動部3
を地面またはトラック上に降し、ハンガー4との連結を
外した後、前記(1)項に記載したシャフトガイド6の
取外し要領で撹拌駆動部を外す。 (4) タワー8の下端を地面に与え、シャフトガイド
昇降用ワイヤーロープ7を最下段タワーの前部に掛けて
張り、タワー分割部フランジのボルトを外した後昇降用
ワイヤーロープ7をゆるめて、分割部フランジ後部をピ
ン連結した状態でブームを倒し伸ばす操作によりタワー
を前述ピン部で折り曲げて最下段タワーを地上に倒す。
その後、前述ピンを外してタワーを切り放し、ブームを
旋回して若干場所を変えながら前記作業を順次繰返し、
最上段タワーを残してタワーを分解する。 (5) ハンガー4を最上段タワーのブラケット16に取
付けた後、シャフトガイド昇降ワイヤーロープ7を最上
段タワーの下部に設けた転向シーブ11と貫通穴10を通し
てブーム14に連結し、該ワイヤーロープを係るウインチ
で巻込むことにより、最上段タワー、旋回手段13及びハ
ンガー42を一体でブーム4の下方に引寄せると共にブー
ムを倒せば第7図に示す走行可能な姿勢となる。 従って、本装置の分解及び逆の手順による組立に別の
クレーンを必要とせず、分解組立時に煩雑な幾多のワイ
ヤーロープの掛け通しや外し作業を不要とし、さらに自
走可能なトラッククレーンやホイールクレーンをベース
マシーンとなし得たため、大型トレーラーによるベース
マシーンの運搬を不要とした。
Hereinafter, in order to further clarify the present invention,
The embodiment will be described in detail with reference to the drawings. FIG. 1 shows the entire apparatus of the embodiment in a workable state, and a stirring drive unit 3 for applying a rotating force to a plurality of stirring shafts 1 having stirring blades via a transmission shaft 2 has a sheave at an upper portion. The hanger 4 is suspended by a wire rope 5 that moves up and down the stirring drive unit. A shaft guide 6 that holds the multiple stirring shafts 1 and rotatably supports them is suspended by a shaft guide lifting / lowering wire rope 7, and the shaft guide 6 and the stirring driving unit 3 are guided by a tower 8 to move up and down individually. The multi-segmented tower 8 has a lower end supported by a base 12 and an upper end swingable in the front-rear direction by a pin 15 at a tip end of a boom 14 of a wheel crane 17 serving as a base machine via a turning means 13. 15 or less devices are connected so as to be suspended. The tower 8 has a split part flange connected by bolting, a pin bracket 9 for temporary connection with a pin at the rear of the flange, and the shaft guide elevating wire rope 7 on the uppermost tower at the rear of the tower. And a bracket 16 for connecting the hanger 4 to the tower during the traveling movement of the base machine described later. Construction by this device, after setting the device so that the stirring shaft is at a predetermined casting position, while mixing and stirring the hardener and the water blocking agent discharged from the tip of the stirring shaft by rotating the stirring shaft 1,
It penetrates into the ground mainly due to the weight of the stirring drive unit 3. After reaching the predetermined depth, while further mixing and stirring, the stirring shaft 1 is raised together with the stirring driving unit by the winding of the wire rope 5 and pulled out, and one construction column is constructed. If the penetration force is insufficient, a winch may be provided on the winch or tower provided on the base machine, and a forced penetration device may be provided that pulls down the stirring drive unit by a wire rope. FIG. 2 shows the entire apparatus of another embodiment in a workable state, in which a multiple stirring shaft 1 having stirring blades is transmitted from a stirring drive unit 22 via a transmission shaft 21 having a polygonal outer peripheral shape. Obtain rotational force and penetration force into the ground. The stirring driving unit 22 makes the rotation center of the rotation output shaft hollow, and penetrates the transmission shaft 21, and applies a plurality of rollers integrated with the rotation output shaft to each surface of the polygonal outer periphery to transmit the rotational force to the transmission shaft. Movement of the transmission shaft in the axial direction while transmitting it to 22, i.e., the lifting shaft can be freely moved up and down. Means for arbitrarily constraining the movement of the transmission shaft penetrating the rotary output shaft in the axial direction in order to transmit the rising force of the stirring drive unit to the transmission shaft is provided. The top of the boom 14 of the wheel crane 17 is provided with a collapsible jib 26 that can be arbitrarily raised and lowered by the expansion and contraction of a hydraulic cylinder 25. The jib provided on the jib has a hook at the tip and is wound on a winch of the base machine. Hanging wire rope 27. The other configuration is the same as the embodiment shown in FIG.
The forcible penetration device may be provided. FIG. 3 shows the lower part of the tower and the base, and the base 31 is provided with a plurality of square holes 33 into which the pyramidal part 32 at the lower part of the tower is inserted, and the pulling reaction force of the stirring shaft 1 and the weight of the apparatus are related. It is laid on the ground with sufficient strength to support the load. The square holes are arranged so that the workability 35 by the multiple stirring shafts 1 is in a predetermined interval 36, direction and arrangement. High efficiency can be achieved by constructing a plurality of bases while replacing them sequentially. FIG. 4 shows a cross section of the upper part of the tower including the turning means of the tower. A turning frame 42 is firmly fixed to a lower part of a turning bearing 41 having a turning center part hollow, and a turning bracket 43 is mounted on an upper part of the turning bearing 41. Secured by bolts. The outer periphery of the outer ring of the slewing bearing 41 is a gear, and the inner ring is divided into upper and lower parts substantially at the center of the ball 44, and the upper and lower inner rings are fixedly connected by bolts 45. At the top of the swivel bracket 43, the boom top bracket 46 of the base machine and the pin 47 are swingably connected in the front and rear direction of the boom with the pin 47. In this case, the lower end of the tower projects slightly forward, that is, the device below the pin 47 is slightly inclined backward. Of a plurality of wire ropes passed from the winch mounted on the base machine to the multi-row top sheave 48 and the swing bracket sheave 49, one of the wire ropes is raised by the action of the spring 50 when no load is applied to the wire rope, and this device is used. A wire rope 53 with a hook 52 at the tip via a retractable sheave 51 that can be stored after the front end of the unit, and a standing steel section to be used as a reinforcing material for assembly, disassembly and unhardened workability of this device Used for embedding. However, in the embodiment shown in FIG. 2, since the above-mentioned operation is performed with a wire rope hung on the sheave at the tip of the collapsible jib, the collapsible sheave 51 is not provided.
The semi-driving unit elevating wire rope 5 and the shaft guide elevating wire rope 7 passed through the sheave 55 of the hanger 4 for suspending the stirring drive unit and the sheave 54 arranged at the front part of the revolving frame make the hollow part of the revolving bearing 41 substantially swivel. It penetrates up and down the center, and is engaged with the winch mounted on the base machine via the above-mentioned turning bracket sheave 49 and top sheave 48, respectively. FIG. 5 is a view taken in the direction of the arrow a in FIG. 4, and an electric motor with a speed reducer having on its output shaft a small gear 61 meshing with the outer peripheral teeth of the outer ring of the slewing bearing whose outer periphery is a gear is arranged on the side surface of the slewing frame. Then, the device below the turning frame is turned by driving the electric motor. Note that the electric motor with a speed reducer 62 may be a hydraulic motor. In the apparatus of the embodiment described in detail above, since the ground applies a pulling reaction force of the stirring shaft generated during construction, a truck crane or a wheel crane that is lighter and smaller than the base machine of the conventional apparatus is used as the base machine. As a result, the entire device has been reduced in size and weight, and the range of change in the distance between the base machine and the construction position has been expanded due to the expansion and contraction of the boom, and the wire rope related to the turning center of the turning means has been penetrated. As shown in Fig. 6, the base machine 17 is fixed in one place and the boom 14 can be rotated, extended and retracted, raised and lowered, and the swivel means 13 can be driven to widen the range of construction. I made it. The lower end of the tower has a pyramidal shape, and a device (hereinafter referred to as a stirrer) including a swirling means, a tower, a stirrer, a transmission shaft, a stirrer shaft and the like, which is below the boom tip pin, can be freely tilted slightly backward. Because a base with a square hole can be suspended, even when performing construction very close to an adjacent building, the stirrer is freely suspended and the pyramid at the lower end of the tower is set in a predetermined position. If the boom is extended and the tower is raised vertically, there is no danger of interfering with the adjacent building, the stirrer can be positioned quickly, and surveying work can be performed by using the base. Reduced. Further, the dividing procedure of the present apparatus will be described next with reference to FIG. (1) After lowering the shaft guide 6 to the ground, the shaft guide lifting wire rope 7 is disconnected, the boom 14 is raised, the stirrer is lifted, and the shaft guide 6 is pulled out below the stirring shaft. (2) After hanging the above-mentioned miscellaneous hanging wire rope on top of the lowermost stirring shaft of the multi-split type stirring shaft 1 to prevent overturning, release the lowermost stirring shaft, gradually loosen the miscellaneous hanging wire rope and drop it on the ground. . The agitation shaft 1 and the transmission shaft 2 are lowered together with the agitation drive unit 3, and the above operations are sequentially repeated to disassemble the agitation shaft and the transmission shaft. (3) After the stirring shaft 1 and the transmission shaft 2 are divided, the stirring driving unit 3
Is lowered on the ground or a truck, and the connection with the hanger 4 is released. Then, the stirring drive unit is removed in the manner of removing the shaft guide 6 described in the above (1). (4) The lower end of the tower 8 is provided on the ground, the wire rope 7 for elevating and lowering the shaft guide is hung on the front part of the lowermost tower, and the bolt on the flange of the tower division is removed, and then the wire rope 7 for elevating is loosened. The tower is bent at the above-mentioned pin portion by the operation of lowering and extending the boom with the rear part of the split flange connected to the pin, and the lowermost tower is lowered to the ground.
After that, remove the pins and cut off the tower, turn the boom and change the location slightly, and repeat the above work sequentially,
Disassemble the tower, leaving the top tower. (5) After attaching the hanger 4 to the bracket 16 of the uppermost tower, the shaft guide elevating wire rope 7 is connected to the boom 14 through the turning sheave 11 and the through hole 10 provided at the lower part of the uppermost tower, and the wire rope is connected. By winding with the winch, the uppermost tower, the turning means 13 and the hanger 42 are pulled together below the boom 4 and the boom is tilted down to the running position shown in FIG. Therefore, a separate crane is not required for disassembling the device and assembling it in the reverse order, so that it is not necessary to hang and remove many complicated wire ropes at the time of disassembling and assembling. As a base machine, eliminating the need to transport the base machine using a large trailer.

【発明の効果】【The invention's effect】

叙上の構成により、タワーの旋回角度が大幅に拡大さ
れ、ベースマシーンの位置に関係なくあらゆる角度(方
向)に向けて地中連続壁を施工できるという著効を奏す
るものである。
According to the above-described configuration, the turning angle of the tower is greatly increased, and the underground continuous wall can be constructed at any angle (direction) regardless of the position of the base machine.

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

第1図 実施例の装置全体図 第2図 他の実施例の装置全体図 第3図 タワー下部及び基台を示す図 第4図 タワーの旋回手段を含むタワー上部の断面図 第5図 第4図のa矢視図 第6図 本発明の装置による施工概要図 第7図 実施例の装置の走行可能な姿勢図 FIG. 1 is an overall view of the apparatus of the embodiment. FIG. 2 is an overall view of the apparatus of another embodiment. FIG. 3 is a view showing the lower part of the tower and the base. FIG. Figure 6 as viewed from the direction of arrow a. Figure 6 Schematic view of construction by the apparatus of the present invention.

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】撹拌羽根を有する撹拌軸と、該撹拌軸を昇
降案内するタワーと、該タワーを旋回させる旋回手段を
備える地中連続壁施工装置において、前記旋回手段が旋
回手段の旋回中心部に空間を形成する中空部を備え、該
中空部に撹拌軸を懸垂して昇降せしめるワイヤーロープ
を貫通させる構造となすことを特徴とする地中連続壁施
工装置。
1. An underground wall construction apparatus comprising: a stirring shaft having stirring blades; a tower for guiding the stirring shaft up and down; and a turning means for turning the tower, wherein the turning means is a turning center of the turning means. An underground continuous wall construction apparatus, comprising: a hollow portion forming a space in the underground wall, and a structure in which a wire rope for suspending and raising and lowering a stirring shaft passes through the hollow portion.
【請求項2】前記旋回手段の中空部へ前記タワーに案内
されて昇降するシャフトガイドを懸垂して昇降せしめる
ワイヤーロープを貫通させたことを特徴とする特許請求
範囲第1項に記載の地中連続壁施行装置。
2. An underground ground according to claim 1, wherein a wire rope for suspending and raising and lowering a shaft guide guided and guided by said tower is passed through a hollow portion of said turning means. Continuous wall enforcement device.
JP25268790A 1990-09-20 1990-09-20 Underground wall construction equipment Expired - Fee Related JP2843949B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25268790A JP2843949B2 (en) 1990-09-20 1990-09-20 Underground wall construction equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25268790A JP2843949B2 (en) 1990-09-20 1990-09-20 Underground wall construction equipment

Publications (2)

Publication Number Publication Date
JPH04131421A JPH04131421A (en) 1992-05-06
JP2843949B2 true JP2843949B2 (en) 1999-01-06

Family

ID=17240846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25268790A Expired - Fee Related JP2843949B2 (en) 1990-09-20 1990-09-20 Underground wall construction equipment

Country Status (1)

Country Link
JP (1) JP2843949B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112681426B (en) * 2020-12-22 2022-11-08 中铁工程机械研究设计院有限公司 Anti-shaking device and double-wheel slot milling machine

Also Published As

Publication number Publication date
JPH04131421A (en) 1992-05-06

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