JPH11181826A - Structure of excavating blade for continuous wall excavator - Google Patents
Structure of excavating blade for continuous wall excavatorInfo
- Publication number
- JPH11181826A JPH11181826A JP35768697A JP35768697A JPH11181826A JP H11181826 A JPH11181826 A JP H11181826A JP 35768697 A JP35768697 A JP 35768697A JP 35768697 A JP35768697 A JP 35768697A JP H11181826 A JPH11181826 A JP H11181826A
- Authority
- JP
- Japan
- Prior art keywords
- excavating
- blade
- excavation
- chain member
- continuous wall
- 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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地中に連続壁を造
成するための連続壁掘削機に係り、特にその掘削刃構造
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous wall excavator for forming a continuous wall in the ground, and more particularly to a drilling blade structure thereof.
【０００２】[0002]
【従来の技術】従来、地中に連続壁を造成する装置とし
て、走行自在なベースマシンに立設されたガイドポスト
の外周面にそわせてチエン部材を無端回動自在に巻装
し、このチエン部材の外面に掘削刃を設け、前記ガイド
ポストを縦穴内に挿入してチエン部材を回動させるとと
もにベースマシンを連続壁造成方向へ移動させてチエン
部材の掘削刃により地盤を切り進み、同時にセメントミ
ルク等の薬液を供給して土砂と混合させることにより連
続壁を造成して行くようになされたものがある。2. Description of the Related Art Conventionally, as an apparatus for forming a continuous wall in the ground, a chain member is endlessly rotatably wound along an outer peripheral surface of a guide post erected on a movable base machine. A drilling blade is provided on the outer surface of the chain member, the guide post is inserted into the vertical hole, the chain member is rotated, and the base machine is moved in the continuous wall forming direction to cut the ground by the blade of the chain member, There is a method in which a continuous wall is formed by supplying a chemical solution such as cement milk and mixing it with earth and sand.
【０００３】[0003]
【発明が解決しようとする課題】しかるに従来の装置で
は、その掘削刃が地盤を切り進むためのみの働きをなさ
しめているため、チエン部材の外面側だけに掘削刃が設
けられたものであり、それ故掘削して切り進む方向に対
し左右の側面となる掘削壁面が荒れやすく、側壁面の崩
壊が起きやすいという問題点があった。However, in the conventional apparatus, since the excavating blade only functions to cut through the ground, the excavating blade is provided only on the outer surface side of the chain member. Therefore, there is a problem that the excavation wall surfaces, which are the left and right side surfaces in the direction of excavation and cutting, are easily roughened and the side wall surface is easily collapsed.
【０００４】一方、従来の掘削刃は、チエン部材の外面
に均等長さで突出されていたため、掘進時における地盤
への食い込み力が屡々不足をきたして掘進不能に陥入る
ことがあり、そのためガイドポストを傾斜させるなど余
分な手段を講じる必要があるという問題点があった。[0004] On the other hand, the conventional excavating blade is protruded from the outer surface of the chain member with an equal length, so that the biting force into the ground at the time of excavation is often insufficient, and the excavating blade may not be able to excavate. There was a problem that extra measures such as tilting the post had to be taken.
【０００５】[0005]
【課題を解決するための手段】本発明は、連続壁造成時
における掘削側壁面を強化することを第１の課題とし、
掘進方向への掘削能力の増大を図ることを第２の課題と
してなされたものである。SUMMARY OF THE INVENTION It is a first object of the present invention to reinforce an excavated side wall surface during the formation of a continuous wall.
The second object is to increase the excavation ability in the excavation direction.
【０００６】上記第１の課題を解決する手段として本発
明は、走行自在に立設されたガイドポストの外周面にそ
わせてチエン部材を無端回動自在に巻装し、このチエン
部材に掘削刃を設けた連続壁掘削機において、前記チエ
ン部材の外面側に掘進用掘削刃を突設するとともに内面
側に掘削土砂押付け用テーパー面を有する側壁面強化用
掘削刃を突設し、前記側壁面強化用掘削刃による掘削幅
を前記掘進用掘削刃による掘削幅より大とした掘削刃構
造、および走行自在に立設されたガイドポストの外周面
にそわせてチエン部材を無端回動自在に巻装し、このチ
エン部材に掘削刃を設けた連続壁掘削機において、前記
チエン部材の外面側に掘進用掘削刃を突設し、この掘削
刃の突出長さを前記チエン部材の回動方向にそって徐々
に長さを増すように長さを異ならせて突設した変形掘削
刃領域を所要長さ範囲として前記チエン部材の少くとも
１箇所以上有している掘削刃構造であり、この変形掘削
刃領域は２箇所以上設ければさらに効果を増すうえで好
ましい。As a means for solving the above-mentioned first problem, the present invention provides an endless rotatable winding of a chain member along the outer peripheral surface of a guide post that is erected upright. In a continuous wall excavator provided with a blade, a digging blade for excavation is projected on an outer surface side of the chain member and a digging blade for reinforcing a side wall surface having a tapered surface for pressing excavated earth and sand is protruded on an inner surface side. The excavating width of the excavating blade for strengthening the wall surface is larger than the excavating width of the excavating blade for excavation, and the chain member is endlessly rotatable along the outer peripheral surface of a guide post erected freely. In a continuous wall excavator in which a cutting member is provided with a cutting blade provided on the chain member, a cutting blade for excavation is protruded on an outer surface side of the chain member, and a protruding length of the cutting blade is determined by a rotation direction of the chain member. Gradually increase the length along It is a drilling blade structure having at least one or more of the chain members as a required length range of a deformed digging blade region having a different length and projecting therefrom. It is preferable to further increase the effect.
【０００７】[0007]
【発明の実施の形態】以下、本発明を図面に示す実施の
形態を参照して説明する。図１は本発明を適用する連続
壁掘削機の一例を示すもので、図１（Ａ）は全体の略示
側面を、図１（Ｂ）はチエン部分のみの正面を示してお
り、この掘削機の基本構成は従来のものと同様に走行自
在なベースマシン１のフレーム２に昇降および旋回可能
に立設されたガイドポスト３を有し、このガイドポスト
３の外周面にそってチエン部材４が駆動装置５により無
端回動自在に巻装され、このチエン部材４に掘削刃が設
けられていて、チエン部材４の回動により地盤を掘削
し、ベースマシン１の移動により地盤を切り進みながら
掘削土砂とセメントミルク等の薬液とを混合撹拌して地
中に連続壁を造成して行くことができるようになってい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows an example of a continuous wall excavator to which the present invention is applied. FIG. 1 (A) shows a schematic side view of the whole, and FIG. 1 (B) shows a front view of only the chain portion. The basic configuration of the machine has a guide post 3 erected up and down and pivotable on a frame 2 of a base machine 1 that can travel freely similarly to the conventional one, and a chain member 4 extends along the outer peripheral surface of the guide post 3. Is endlessly rotatable by a driving device 5, and an excavation blade is provided on the chain member 4. The ground is excavated by the rotation of the chain member 4, and the ground is cut by the movement of the base machine 1. The excavated soil and a chemical solution such as cement milk are mixed and stirred to form a continuous wall in the ground.
【０００８】上記チエン部材４は、図２（Ａ）にその一
部の長さ領域を拡大した側面図を、図２（Ｂ）にその一
部の拡大図を、さらに図３にガイドポスト３を含む全体
の水平断面図を示すように、前記チエン部材４の一つ置
きのリンク４ａ，４ａ…の外面側にベースプレート６，
６…が固着され、このベースプレート６の外面側に掘進
用掘削刃７，７…が、ベースプレート６の内面側両側端
位置に側壁面強化用掘削刃８，８がそれぞれ突設されて
いる。FIG. 2A is an enlarged side view of a part of the chain member 4, FIG. 2B is an enlarged view of a part thereof, and FIG. As shown in the overall horizontal cross-sectional view including the above, the base plate 6 is provided on the outer surface side of every other link 4a of the chain member 4.
Are fixed on the outer surface of the base plate 6, and the excavating blades 8, 8 for reinforcing the side wall surface are provided at both end positions on the inner surface side of the base plate 6, respectively.
【０００９】前記掘進用刃７は、例えば図６に示すよう
に平面よりみて各ベースプレート６に設けられるそれぞ
れの掘削刃がベースプレート６の幅方向全域を埋め合う
ように配置して突設されている。As shown in FIG. 6, the excavating blades 7 are arranged and protruded so that the excavating blades provided on each base plate 6 fill the entire width of the base plate 6 as viewed from a plane. .
【００１０】そしてチエン部材４の回動方向所要範囲
（図５のＹの範囲）の掘進用掘削刃は、図２（Ａ）にそ
の該当部分を示すように、掘進用掘削刃７1 ，７2 ，７
3 のように徐々に突出長さをａ，ｂだけ異ならせてあ
り、この範囲が変形掘削刃領域Ｙとされている。図２
（Ａ）の例では、チエン部材４の回転方向が正転、逆転
の２態様をとる場合を考慮して、最も突出長さの長い掘
進用掘削刃７3 を中央にしてその前後が徐々に突出長さ
が短くなる掘進用掘削刃７2 ，７1 を配列する形態とさ
れている。上記変形掘削刃領域Ｙは、チエン部材４の全
周のうち１箇所乃至２箇所程度設けるようにすることが
好ましい。As shown in FIG. 2A, the excavating digging blades in the required range of the rotation direction of the chain member 4 (the range of Y in FIG. 5) are digging excavating blades 7 1 , 7. 2, 7
As shown in FIG. 3, the protrusion lengths are gradually changed by a and b, and this range is defined as a deformed excavation blade region Y. FIG.
In the example of (A), the rotational direction of forward rotation of the chain member 4, considering the case of adopting the second aspect of the reversal, before and after gradually most protruding length long excavation for digging edge 7 3 in the central protruding length is a form of arranging the shield for digging edge 7 2, 7 1 becomes shorter. It is preferable that the deformed excavation blade region Y is provided at about one or two places in the entire circumference of the chain member 4.
【００１１】前記側壁面強化用掘削刃８，８は、前記ベ
ースプレート６の内面側両端に傾斜してテーパー面９を
形成するように突設され、その刃先８ａは、図４にみら
れるように掘進用掘削刃７による掘削幅Ｌ1 よりも若干
広い掘削幅Ｌ2 が得られるよう最外端の掘進掘削刃７，
７の刃先７ａ，７ａよりも若干外側方に突出した位置と
されている。The excavating blades 8, 8 for reinforcing the side wall surface are provided so as to be inclined at both ends on the inner surface side of the base plate 6 so as to form a tapered surface 9, and the cutting edge 8a thereof is as shown in FIG. excavation digging edge 7 of the outermost edge to slightly wider excavation width L 2 can be obtained from the excavation width L 1 by the shield for digging edge 7,
The cutting edges 7a are slightly protruded outward from the cutting edges 7a.
【００１２】上記掘進用掘削刃７列を上面よりみたと
き、図６（Ａ）のように複数本（図では３本）の掘削刃
７′，７′，７′が他の掘削刃７より若干突出する形態
とされるが、図６（Ｂ）のようなジグザク状になる配
置、図６（Ｃ）のように中央が短く、両端に行くにつれ
て次第に長くなる谷状の配置、図６（Ｄ）のように中央
が長く、両端に行くにつれて次第に短くなる山形の配置
等、適宜選択することができる。When the seven rows of excavating blades 7 are viewed from above, a plurality (three in the figure) of excavating blades 7 ', 7', 7 'are arranged at a higher position than the other excavating blades 7 as shown in FIG. 6 (B), a zigzag arrangement as shown in FIG. 6 (B), a valley-like arrangement in which the center is short as shown in FIG. 6 (C) and gradually becomes longer toward both ends, and FIG. As shown in D), it is possible to appropriately select a mountain-shaped arrangement in which the center is long and becomes gradually shorter toward both ends.
【００１３】また前記ガイドポスト３内には、従来と同
様にセメントミルク等の薬液通路が設けられており、ガ
イドポスト３の下端部に開口された薬液吐出口１１から
掘削土砂内に薬液を注出するようになされている。図
３、図４において斜線部分は地盤を示す。A chemical solution passage such as cement milk is provided in the guide post 3 as in the prior art, and a chemical solution is injected into the excavated earth and sand from a chemical solution discharge port 11 opened at the lower end of the guide post 3. It is made to put out. 3 and 4, the hatched portions indicate the ground.
【００１４】次に上記実施形態の作用を説明する。Next, the operation of the above embodiment will be described.
【００１５】連続壁を造成すべき地盤に予め縦孔を削孔
しておき、この縦孔内にガイドポスト３を挿入したのち
チエン部材４を無端回動させるとともに薬液吐出口１１
からセメントミルク、ベントナイト等の薬液を供給しつ
つベースマシン１を連続壁造成方向に走行させる。これ
によりチエン部材４の外周面に突設された掘進用掘削刃
７により地盤が掘削され、横方向に掘削溝が形成され
る。A vertical hole is previously drilled in the ground on which the continuous wall is to be formed, and the guide post 3 is inserted into the vertical hole.
The base machine 1 is caused to travel in the direction of forming a continuous wall while supplying a chemical liquid such as cement milk, bentonite, or the like. As a result, the ground is excavated by the excavating blades 7 protruding from the outer peripheral surface of the chain member 4, and excavation grooves are formed in the lateral direction.
【００１６】上記掘削時に、チエン部材４の外面側の掘
進用掘削刃７により地盤が掘削されて切り進むが、この
際掘削された掘削溝の側壁面１０，１０は荒削り状態で
あり、ぼろぼろの状態であるが、チエン部材４の内面側
の側壁面強化用掘削刃８，８の刃先８ａが掘削溝の側壁
面１０，１０に当ってその側壁面１０，１０を切削する
とともに、掘削された土砂を側壁面強化用掘削刃８，８
のテーパ面９，９が側壁面１０，１０を押しつけるよう
にして進むことにより掘削面が押し固められ、これによ
り掘削面が微密な状態となって強化され、崩壊を起こす
ことが防がれる。At the time of the excavation, the ground is excavated by the excavating blades 7 on the outer surface side of the chain member 4 and the cutting proceeds. In this state, the cutting edge 8a of the side wall surface strengthening digging blade 8, 8 on the inner surface side of the chain member 4 hits the side wall surface 10, 10 of the digging groove and cuts the side wall surface 10, 10 and is excavated. Excavation blades 8, 8 for strengthening side walls
The excavation surface is compacted by the tapered surfaces 9, 9 being pressed so as to press against the side wall surfaces 10, thereby strengthening the excavation surface in a fine state and preventing collapse. .
【００１７】また上記掘削に際しチエン部材４の外面側
の掘進用掘削刃７列の一定範囲が変形掘削刃領域Ｙとさ
れているので、この領域の掘進用掘削刃７1 ，７2 ，７
3 の短いものから順次長いものが地盤に当ることにな
り、その先端の刃先が順次地盤にくい込む形となって掘
削され、地盤にくい込む力が集中して効率のよい切り進
みを行わせることができる。In the above-mentioned excavation, a fixed range of the seven rows of excavating blades 7 on the outer surface side of the chain member 4 is defined as a deformed excavating blade region Y. Therefore, the excavating blades 7 1 , 7 2 , 7 in this region are formed.
The longest one from the shortest one will hit the ground sequentially, and the cutting edge of the tip will be excavated sequentially into the ground, and the power to penetrate the ground will be concentrated and efficient cutting will be performed it can.
【００１８】[0018]
【発明の効果】以上説明したように請求項１に記載の発
明によれば、チエン部材の外面側に設けられる掘進用掘
削刃により横方向に溝を掘削したあと、その掘削溝の側
壁面をチエン部材の内面側両端に設けた側壁面強化用掘
削刃のテーパー面により荒れた掘削面が押し固められる
ので、側壁面の掘削面が強化され、後に崩壊するような
事態を防止することができ、良好な連続壁を造成するこ
とができる。As described above, according to the first aspect of the present invention, after a groove is excavated in the lateral direction by the excavating blade provided on the outer surface side of the chain member, the side wall surface of the excavated groove is removed. Since the rough excavated surface is compacted by the tapered surface of the excavating blade for reinforcing the side wall surface provided at both ends on the inner surface side of the chain member, the excavated surface of the side wall surface is strengthened, and it is possible to prevent a situation such as collapse later. A good continuous wall can be formed.
【００１９】また請求項２，３によれば、掘削時に掘進
用掘削刃の地盤に対するくい込みをよくし、効率のよい
掘削を行うことができる。According to the second and third aspects of the present invention, it is possible to improve the depth of the excavation blade for excavation into the ground during excavation, thereby performing efficient excavation.
【図１】本発明の適用対象としての連続壁掘削機の一例
を示し、（Ａ）は全体の略示側面図、（Ｂ）はガイドポ
スト部分の正面図。FIG. 1 shows an example of a continuous wall excavator to which the present invention is applied, (A) is a schematic side view of the whole, and (B) is a front view of a guide post portion.
【図２】（Ａ）はチエン部材の一部の側面図、（Ｂ）は
一部の拡大断面図。2A is a side view of a part of a chain member, and FIG. 2B is an enlarged sectional view of a part.
【図３】ガイドポストを含む全体の水平断面図。FIG. 3 is an overall horizontal sectional view including a guide post.
【図４】掘削状態を示す説明図。FIG. 4 is an explanatory diagram showing an excavation state.
【図５】チエン部材の掘進用掘削刃の配列例を示す説明
図。FIG. 5 is an explanatory view showing an example of an arrangement of excavating blades for excavating a chain member.
【図６】（Ａ）〜（Ｄ）は掘進用掘削はの水平方向の配
列例を示す説明図。6 (A) to 6 (D) are explanatory diagrams showing examples of horizontal arrangement of excavation for excavation.
１ ベースマシン ２ フレーム ３ ガイドポスト ４ チエン部材 ６ ベースプレート ７（７1 ，７2 ，７3 ，７′） 掘進用掘削刃 ８ 側壁面強化用掘削刃 ９ テーパー面 １０ 側壁面 １１ 薬液吐出口1 base machine 2 frame 3 the guide post 4 thien member 6 base plate 7 (7 1, 7 2, 7 3, 7 ') reinforcing excavation for digging edge 8 side wall surface digging edge 9 a tapered surface 10 side wall surface 11 chemical liquid discharging ports
Claims (2)
面にそわせてチエン部材を無端回動自在に巻装し、この
チエン部材に掘削刃を設けた連続壁掘削機において、前
記チエン部材の外面側に掘進用掘削刃を突設するととも
に内面側に掘削土砂押付け用テーパー面を有する側壁面
強化用掘削刃を突設し、前記側壁面強化用掘削刃による
掘削幅を前記掘進用掘削刃による掘削幅より大としたこ
とを特徴とする連続壁掘削機における掘削刃構造。1. A continuous wall excavator in which a chain member is endlessly rotatably wound along an outer peripheral surface of a guide post which is erected vertically and said chain member is provided with a cutting blade. A digging blade for excavation is projected on the outer surface side of the member, and a digging blade for reinforcing the side wall surface having a tapered surface for pressing digging earth and sand is protruded on the inner surface side. An excavating blade structure in a continuous wall excavator, wherein the excavating width is larger than an excavating width of the excavating blade.
面にそわせてチエン部材を無端回動自在に巻装し、この
チエン部材に掘削刃を設けた連続壁掘削機において、前
記チエン部材の外面側に掘進用掘削刃を突設し、この掘
削刃の突出長さを前記チエン部材の回動方向にそって徐
々に長さを増すように長さを異ならせて突設した変形掘
削刃領域を所要長さ範囲として前記チエン部材の少くと
も１箇所以上有していることを特徴とする連続壁掘削機
における掘削刃構造。2. A continuous wall excavator in which a chain member is endlessly rotatably wound along an outer peripheral surface of a guide post which is erected vertically and said chain member is provided with a cutting blade. A deformation in which an excavating blade for excavation is protruded on the outer surface side of the member, and the protruding length of the excavating blade is varied so as to gradually increase in length along the rotation direction of the chain member, and is provided in a protruding manner. An excavating blade structure for a continuous wall excavator, wherein the excavating blade region has at least one or more of the chain members in a required length range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35768697A JP3830646B2 (en) | 1997-12-25 | 1997-12-25 | Drilling blade structure in continuous wall excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35768697A JP3830646B2 (en) | 1997-12-25 | 1997-12-25 | Drilling blade structure in continuous wall excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11181826A true JPH11181826A (en) | 1999-07-06 |
| JP3830646B2 JP3830646B2 (en) | 2006-10-04 |
Family
ID=18455393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35768697A Expired - Fee Related JP3830646B2 (en) | 1997-12-25 | 1997-12-25 | Drilling blade structure in continuous wall excavator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3830646B2 (en) |
-
1997
- 1997-12-25 JP JP35768697A patent/JP3830646B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3830646B2 (en) | 2006-10-04 |
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