JP3177840B2 - Drilling rig for caisson - Google Patents
Drilling rig for caissonInfo
- Publication number
- JP3177840B2 JP3177840B2 JP18922999A JP18922999A JP3177840B2 JP 3177840 B2 JP3177840 B2 JP 3177840B2 JP 18922999 A JP18922999 A JP 18922999A JP 18922999 A JP18922999 A JP 18922999A JP 3177840 B2 JP3177840 B2 JP 3177840B2
- Authority
- JP
- Japan
- Prior art keywords
- discharging
- caisson
- blade
- screw body
- rotary cutter
- 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
Links
Landscapes
- Earth Drilling (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は各種ケーソンの刃口
の直下地盤を掘削するケーソン用掘削装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caisson excavator for excavating a base plate directly at a cutting edge of various caissons.
【０００２】[0002]
【従来の技術】一般にケーソンを沈下させるには、ケー
ソンの刃口近くを作業者による手掘り或いはバックホー
等による機械掘りしているが、ケーソンの刃口近くは盤
膨れを起こし易く、大変に危険な作業である。2. Description of the Related Art Generally, in order to sink a caisson, a caisson blade is dug by hand or machined by a backhoe or the like. However, a caisson blade is likely to bulge, which is extremely dangerous. Work.
【０００３】そこで本発明者は先にケーソンの刃口直下
地盤を安全に掘削する装置を特許第２８８４３４５号と
して先に提案した。この掘削装置はケーソンの刃口に沿
って自走する手段を有する基板と、基板の横断方向に併
設した回転カッタ及び削土をケーソン内側へ搬出する回
転可能なスクリュー体と、スクリュー体と平行に設けた
排土案内面とからなり、回転カッタで掘削しながら、ス
クリュー体が排土案内面に沿わせて削土を排土する構造
になっている。The inventor of the present invention has previously proposed a device for safely excavating a caisson foundation directly under a cutting edge as Japanese Patent No. 2884345. This excavator has a substrate having means for self-propelling along the cutting edge of the caisson, a rotatable screw body provided in the transverse direction of the substrate and a rotatable screw body for unloading the soil into the caisson, and a parallel with the screw body. The screw body excavates along the discharge guide surface while excavating with the rotary cutter.
【０００４】[0004]
【発明が解決しようとする課題】前記した掘削装置にあ
っては、掘削中に礫等の異物が回転カッタの掘削歯の間
やスクリュー体の羽根の間に挟まり、掘削効率や排土効
率を低下させる可能性がある。In the above-mentioned excavator, foreign matter such as gravel is caught between the excavating teeth of the rotary cutter and the blades of the screw body during excavation, and the excavating efficiency and the earth discharging efficiency are reduced. May decrease.
【０００５】本発明は以上の点に鑑みてなされたもの
で、その目的とするところは、長期間に亘って高い掘削
効率と排土効率を持続できるケーソン用掘削装置を提供
することにある。The present invention has been made in view of the above points, and an object of the present invention is to provide a caisson excavator capable of maintaining high excavation efficiency and earth removal efficiency for a long period of time.
【０００６】[0006]
【課題を解決するための手段】請求項１に係る発明は、
ケーソンの刃口の直下を該刃口に沿って移動可能に配置
された基板と、該基板の下面に回転可能に設置され、刃
口直下地盤を掘削する回転カッタと、該回転カッタと平
行で回転可能に配置され、削土をケーソン内側へ排出す
る排土用スクリュー体とを具備する掘削機において、前
記回転カッタの掘削刃が螺旋形を呈すると共に、前記排
土用スクリュー体の羽根が螺旋形を呈し、前記回転カッ
タの螺旋形を呈する掘削刃と、排土用スクリュー体の螺
旋形を呈する羽根とを重合するように配置したことを特
徴とする、ケーソン用掘削機である。請求項２に係る発
明は、請求項１において、回転カッタと排土用スクリュ
ー体とにより対を成す掘削排土手段を基板の両端部に夫
々設置したことを特徴とする、ケーソン用掘削装置であ
る。請求項３に係る発明は、請求項１又は請求項２にお
いて、排土用スクリュー体の内側に排土用スクリュー体
と平行に排土案内面を形成したことを特徴とする、ケー
ソン用掘削装置である。請求項４に係る発明は、請求項
１乃至請求項３の何れかにおいて、対を成す回転カッタ
の掘削刃と排土用スクリュー体の羽根を逆向きに形成す
ると共に、回転カッタと各排土用スクリュー体を夫々逆
方向に回転し得るように構成したことを特徴とする、ケ
ーソン用掘削装置である。請求項５に係る発明は、請求
項１乃至請求項３の何れかにおいて、対を成す回転カッ
タの掘削刃と排土用スクリュー体の羽根を同一の向きに
形成すると共に、回転カッタと各排土用スクリュー体を
夫々同一方向に回転し得るように構成したことを特徴と
する、ケーソン用掘削装置である。The invention according to claim 1 is
A substrate disposed directly below the caisson blade along the blade, a rotatable cutter that is rotatably installed on the lower surface of the substrate and excavates the ground directly under the blade, and a rotary cutter parallel to the rotary cutter. An excavating screw body that is rotatably disposed and discharges shavings to the inside of the caisson, wherein the excavating blade of the rotary cutter has a spiral shape, and the blades of the excavating screw body have a spiral shape. An excavator for a caisson, characterized in that the excavator has a shape, and a helical excavating blade of the rotary cutter and a helical wing of a screw for discharging the earth are superposed. The invention according to claim 2 is the caisson excavator according to claim 1, wherein the excavating and discharging means forming a pair with the rotary cutter and the discharging screw body are respectively installed at both ends of the substrate. is there. The invention according to claim 3 is the excavator for caisson according to claim 1 or 2, wherein a discharging guide surface is formed inside the discharging screw body in parallel with the discharging screw body. It is. According to a fourth aspect of the present invention, in any one of the first to third aspects, the excavating blade of the paired rotary cutter and the blade of the screw body for discharging are formed in opposite directions, and the rotary cutter and each discharging A caisson excavator, characterized in that the screw bodies for rotation can be rotated in opposite directions. According to a fifth aspect of the present invention, in any one of the first to third aspects, the excavating blade of the paired rotary cutter and the blade of the screw body for discharging are formed in the same direction, and the rotary cutter and each of the drainage blades are formed in the same direction. A caisson excavator, characterized in that the earth screw bodies can be rotated in the same direction, respectively.
【０００７】[0007]
【発明の実施の形態１】以下，図１〜図６を参照しなが
ら本発明の実施の形態について説明する。Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
【０００８】＜イ＞ケーソン 図６はケーソン１を刃口２側から見た図で、ケーソン１
は公知のオープン式又は有底式等の公知の函体で、その
断面形状は図示した矩形の他に多角形や円形、楕円形を
含み、また刃口２の下端面は水平に形成されている。<A> Caisson FIG. 6 is a view of the caisson 1 viewed from the blade 2 side.
Is a known box such as a known open type or bottomed type, and its cross-sectional shape includes a polygon, a circle, and an ellipse in addition to the illustrated rectangle, and the lower end surface of the blade port 2 is formed horizontally. I have.
【０００９】図５は刃口２の断面を示すもので、刃口２
の下端部は、断面コ字形の鋼板３で覆われていて、この
鋼板３の内外両側面に所定の間隔を隔てて複数の棒体４
が突設されている。これらの棒体４群は掘削機Ａ1〜Ａ4
の走行手段が係止するための直線歯車を形成している。FIG. 5 shows a cross section of the cutting edge 2.
Is covered with a steel plate 3 having a U-shaped cross section, and a plurality of rods 4 are provided on both inner and outer side surfaces of the steel plate 3 at predetermined intervals.
Are protruding. These four groups of rods are composed of excavators A 1 to A 4
Are formed to form a linear gear for locking.
【００１０】＜ロ＞掘削機 図６に示した複数組の掘削機Ａ1〜Ａ4は同一構造である
から、そのうちの掘削機Ａ1 について説明し、他の掘削
機Ａ2〜Ａ4については説明を省略する。<B> Excavator Since a plurality of sets of excavators A 1 to A 4 shown in FIG. 6 have the same structure, only the excavator A 1 will be described, and the other excavators A 2 to A 4 will be described. Will not be described.
【００１１】図１，図２に示す如く、掘削機Ａ1は刃口
２の長手方向に沿って走行可能な基板１０を具備する。
基板１０の下面両側には側板１１，１１が設けられてい
て、断面がコ字形に形成されている。基板１０の左半お
よび右半には、側板１１，１１に回転可能に支持された
回転カッタ２０ａ，２０ｂ及び排土用スクリュー体３０
ａ，３０ｂと排土案内面１２ａ，１２ｂを一組とする掘
削手段と排土手段が夫々複数組み設けられている。掘削
手段と排土手段を複数組設けたのは、掘削機Ａ1が刃口
２に沿って移動するとき、刃口２の全長に亘って掘削し
得るようにするためである。As shown in FIGS. 1 and 2, the excavator A 1 has a substrate 10 that can travel along the longitudinal direction of the cutting edge 2.
Side plates 11, 11 are provided on both sides of the lower surface of the substrate 10, and have a U-shaped cross section. On the left and right halves of the substrate 10, rotating cutters 20a and 20b rotatably supported by the side plates 11, 11 and a screw body 30 for discharging the earth are provided.
A plurality of excavating means and a plurality of unloading means are provided, each of which includes a set 30a and a discharge guide surface 12a, 12b. The drilling unit and earth removal means has plural sets provided, when the excavator A 1 is moved along the cutting edge 2, in order to be capable of excavating the entire length of the cutting edge 2.
【００１２】＜ハ＞回転カッタ 各回転カッタ２０ａ，２０ｂは回転軸２１に排土作用も
併有する螺旋形の掘削刃２２を一体に設けて構成され
る。回転軸２１は基板１０の走行方向に対し直交方向に
向けて配置され、側板１１，１１に支持されている。各
回転カッタ２０ａ，２０ｂは、歯車機構（歯車１３ａ，
ウォーム１３ｂ，ウォームホイール１３ｃ）やチェーン
機構等を介して伝達される駆動源１３ｄの回転力を受け
て、ケーソン１の刃口２（又は躯体）の厚さ分を掘削で
きるようになっている。<C> Rotary Cutter Each of the rotary cutters 20a and 20b is constructed by integrally providing a rotary shaft 21 with a spiral excavating blade 22 having a soil discharging action. The rotating shaft 21 is arranged in a direction orthogonal to the traveling direction of the substrate 10 and is supported by the side plates 11 and 11. Each rotary cutter 20a, 20b is provided with a gear mechanism (gear 13a,
By receiving the rotational force of the drive source 13d transmitted via the worm 13b, the worm wheel 13c) and the chain mechanism, the thickness of the blade 2 (or the body) of the caisson 1 can be excavated.
【００１３】一方の側板１１からケーソン外周面側に突
出する各回転軸２１，２１の端部には、余掘用回転カッ
タ２３，２３が設けられている。At the end of each of the rotating shafts 21 and 21 protruding from one side plate 11 to the outer peripheral surface of the caisson, there are provided rotating cutters 23 and 23 for excavation.
【００１４】＜ニ＞排土用スクリュー体 各排土用スクリュー体３０ａ，３０ｂは回転駆動軸３１
に螺旋形の羽根３２を一体に設けて構成され、前記した
回転カッタ２０ａ，２０ｂの内側に配設されている。各
回転駆動軸３１，３１は、基板１０の走行方向に対し直
交方向に向けて配置され、歯車機構（歯車１３ａ，ウォ
ーム１３ｅ，ウォームホイール１３ｆ）やチェーン機構
等を介して伝達される駆動源１３ｄの回転力を受けて両
排土用スクリュー体３０ａ，３０ｂが回転するようにな
っている。<D> Discharge Screw Body Each of the discharge screw bodies 30a and 30b has a rotary drive shaft 31.
The spiral blades 32 are provided integrally with each other, and are disposed inside the above-mentioned rotary cutters 20a and 20b. Each of the rotary drive shafts 31, 31 is arranged in a direction orthogonal to the traveling direction of the substrate 10, and a drive source 13d transmitted via a gear mechanism (gear 13a, worm 13e, worm wheel 13f), a chain mechanism or the like. The two screw bodies 30a and 30b for discharging are rotated by receiving the rotation force.
【００１５】各排土用スクリュー体３０ａ，３０ｂの内
側には、排土用スクリュー体３０ａ，３０ｂと平行に形
成した排土案内面１２ａ，１２ｂと協働して削土をケー
ソン１の内側へ排出できるようになっている。尚、排土
案内面１２ａ，１２ｂは必須の構造要素ではなく、省略
される場合がある。On the inside of each of the screw bodies 30a, 30b for earth removal, soil removal is carried out inside the caisson 1 in cooperation with the earth discharge guide surfaces 12a, 12b formed in parallel with the screw bodies 30a, 30b for earth removal. It can be discharged. Note that the discharge guide surfaces 12a and 12b are not essential structural elements and may be omitted.
【００１６】本例では各排土用スクリュー体３０ａ，３
０ｂの羽根３２，３２の螺旋方向を回転カッタ２０ａ，
２０ｂの掘削刃２２，２２の螺旋方向に対して反対に形
成すると共に、左半の排土用スクリュー体３０ａと回転
カッタ２０ａ及び右半の排土用スクリュー体３０ｂと回
転カッタ３０ｂの回転方向を夫々逆にした場合を示す。
掘削機Ａ1は刃口２を往復移動して掘削するが、その移
動方向が変わっても回転カッタ２０ａ，２０ｂや排土用
スクリュー体３０ａ，３０ｂの回転方向は変わらない。In this embodiment, each of the screw bodies 30a, 3
0b, the helical direction of the blades 32, 32 is changed to the rotary cutter 20a,
The spiral direction of the excavating blades 22 and 22 of 20b is formed in the opposite direction, and the rotating directions of the left half discharging screw body 30a and the rotary cutter 20a and the right half discharging screw body 30b and the rotary cutter 30b are changed. Each case is shown as reversed.
Excavator A 1 is drilling a cutting edge 2 reciprocates, the even movement direction is changed rotating cutter 20a, 20b and exhaust dog days screw member 30a, the rotation direction of the 30b does not change.
【００１７】＜ホ＞走行手段 図１乃至図３に基づいて掘削機の走行手段について説明
する。基板１０の下面の中間には、基板１０の走行方向
に対し直交方向に向けて回転可能な駆動軸４０が配置さ
れている。側板１１，１１を貫通した駆動軸４０の両端
部には、走行用歯車４１，４１が設けられている。各走
行用歯車４１の外周面には、前記した等ピッチで設けた
棒体４を収容可能な凹部４２が形成されている。駆動軸
４０の一方のケーソン内側の端には歯車１３ｇが固着し
てあって、チェーンや歯車機構などを介して駆動源１３
ｈの正転力と逆転力を左右一対の走行用歯車４１，４１
へ伝達して掘削機Ａ1が前進及び後進し得るようになっ
ている。<E> Traveling Means The traveling means of the excavator will be described with reference to FIGS. A drive shaft 40 that is rotatable in a direction perpendicular to the traveling direction of the substrate 10 is disposed in the middle of the lower surface of the substrate 10. Traveling gears 41, 41 are provided at both ends of the drive shaft 40 penetrating the side plates 11, 11, respectively. On the outer peripheral surface of each running gear 41, a concave portion 42 capable of accommodating the rods 4 provided at the same pitch as described above is formed. A gear 13g is fixed to the inner end of one caisson of the drive shaft 40, and the drive source 13 is connected via a chain, a gear mechanism, or the like.
h for the forward rotation force and the reverse rotation force.
And transmitting the excavator A 1 and is able to forward and backward to.
【００１８】尚、既述した回転カッタ２０ａ，２０ｂや
排土用スクリュー体３０ａ，３０ｂの動力伝達機構や走
行手段の動力伝達機構は例示であって、図示した形態に
限定されるものではなく、公知の各種動力伝達機構を適
用できることは勿論である。また駆動源や動力伝達機構
等の設備は、走行の邪魔にならないように掘削機のケー
ソン内側に配設することは勿論である。The power transmission mechanisms of the rotary cutters 20a and 20b, the earthing screw bodies 30a and 30b, and the power transmission mechanism of the traveling means are merely examples, and are not limited to the illustrated forms. It goes without saying that various known power transmission mechanisms can be applied. In addition, it is a matter of course that facilities such as a drive source and a power transmission mechanism are arranged inside the caisson of the excavator so as not to hinder the traveling.
【００１９】＜ヘ＞異物の除去構造 共に螺旋形を呈する回転カッタ２０ａ，２０ｂと排土用
スクリュー体３０ａ，３０ｂを並設した場合、掘削刃２
２や羽根３２の間に石等の異物が挟まる難点があること
は既述した通りである。<F> Foreign matter removal structure When the rotary cutters 20a and 20b, both of which have a helical shape, and the screw bodies 30a and 30b for discharging the earth are arranged side by side,
As described above, there is a problem that a foreign substance such as a stone is sandwiched between the blades 2 and the blades 32.
【００２０】本発明では図４に拡大して示すように、異
物５０の挟み込みを回避するため、回転カッタ２０ａの
螺旋形を呈する掘削刃２２と、排土用スクリュー体３０
ａの螺旋形を呈する羽根３２とが相互に入り込んで重合
する構成を採用した。In the present invention, as shown in an enlarged view in FIG. 4, in order to avoid pinching of the foreign matter 50, the excavating blade 22 having the spiral shape of the rotary cutter 20a and the screw body 30 for discharging the earth are provided.
A configuration was adopted in which the helical blade 32 a and the blade 32 a entered each other and polymerized.
【００２１】異物５０の挟み込み防止効果を高めるに
は、相対向する各掘削刃２２と各羽根３２の外周端縁か
ら、各軸２１，３１の外周面までの距離を短く設定する
ことが望ましい。前記距離を短く設定するには、例えば
各掘削刃２２や各羽根３２の径を大きく設定するか、或
いは各軸２１，３１の配置間隔を短く設定すればよい。In order to enhance the effect of preventing the foreign matter 50 from being caught, it is desirable to shorten the distance from the outer peripheral edge of each of the opposing digging blades 22 and each of the blades 32 to the outer peripheral surface of each of the shafts 21 and 31. In order to set the distance to be short, for example, the diameter of each excavating blade 22 or each blade 32 may be set to be large, or the arrangement interval between the shafts 21 and 31 may be set to be short.
【００２２】右半の回転カッタ２０ｂと排土用スクリュ
ー体３０ｂについても上記した左半と同様の構成である
から、その説明を省略する。The right half rotary cutter 20b and the earth discharging screw body 30b have the same configuration as the left half described above, and therefore the description thereof will be omitted.
【００２３】[0023]
【作用】つぎにケーソン１の刃口直下地盤の掘削方法に
ついて説明する。Next, a method of excavating the caisson 1 under the cutting edge directly under the ground will be described.
【００２４】＜イ＞往復走行 図６に示す如く、ケーソン１の刃口２の各辺にセットし
た各掘削機Ａ1〜Ａ4を一斉に稼働して掘削を開始する。
掘削量を均等にするため、対向する掘削機Ａ1，Ａ3とＡ
2，Ａ4を刃口２に沿って等速度で往復走行させるとよ
い。<A> Reciprocating Travel As shown in FIG. 6, excavators A 1 to A 4 set on the respective sides of the blade 2 of the caisson 1 are simultaneously operated to start excavation.
To equalize the excavation amount, the excavators A 1 , A 3 and A
2, A 4 and may be round trip at a constant speed along the cutting edge 2.
【００２５】すなわち、図５に示す如く走行用歯車２
０，２０を回転させてケーソン１の両側面に設けた棒体
４，４に順次反力を得ながら掘削機を自走させる。That is, as shown in FIG.
The excavator is self-propelled while rotating 0 and 20 to sequentially obtain a reaction force on the rods 4 and 4 provided on both sides of the caisson 1.
【００２６】＜ロ＞掘削 この間、図１、図２に示す各回転カッタ２０ａ，２０ｂ
が刃口２の直下地盤を均等に回転掘削していく。<B> Excavation During this time, the rotary cutters 20a and 20b shown in FIGS.
Rotatively excavates the foundation immediately under the cutting edge 2 evenly.
【００２７】各排土用スクリュー体３０ａ，３０ｂと排
土案内面１２ａ，１２ｂとが協働して削土をケーソン１
の内側へ排出する。また排土は回転カッタ２０ａ，２０
ｂによっても行われるので、効率よく排出できる。The soil removal screw bodies 30a, 30b and the soil removal guide surfaces 12a, 12b cooperate with each other to remove soil in the caisson 1.
Drain into the inside. The soil is removed by the rotary cutters 20a and 20a.
Since it is also performed by b, it is possible to discharge efficiently.
【００２８】＜ハ＞異物の掻き出し 前述したように各回転カッタ２０ａ，２０ｂの回転刃２
２と各排土用スクリュー体３０ａ，３０ｂの羽根３２が
重合した状態で回転している。そのため、各螺旋形の掘
削刃２２や羽根３２の間に異物５０が入り込み難くなる
うえに、仮に異物５０が挟まったとしても掘削刃２２や
羽根３２の何れか一方が何れか他方に挟まった異物５０
を強制的に破砕したり或いは掻き落とす（図５参照）。
したがって、回転カッタ２０ａ，２０ｂによる掘削効率
や排土用スクリュー体３０ａ，３０ｂによる排土効率を
低下させることを回避して、効率のよい掘削作業と排土
作業を持続できる。<C> Scavenging of foreign matter As described above, the rotary blade 2 of each of the rotary cutters 20a and 20b
2 and the blades 32 of each of the screw bodies 30a and 30b for discharging are rotating in a superposed state. Therefore, it is difficult for the foreign matter 50 to enter between the spiral digging blades 22 and the blades 32, and even if the foreign matter 50 is caught, any one of the digging blades 22 and the blades 32 is caught by one of the other. 50
Is forcibly crushed or scraped off (see FIG. 5).
Therefore, it is possible to avoid lowering the excavation efficiency by the rotary cutters 20a and 20b and the earth removal efficiency by the earth discharging screw bodies 30a and 30b, and to continue the efficient excavation work and earth removal work.
【００２９】以上の作業を繰り返すことで、刃口２の直
下地盤を均等量づつ掘削してケーソン１を沈下させる。
また、任意の掘削機Ａ1〜Ａ4のみを自走させて部分的な
範囲を掘削してケーソン１の沈下量を修正するようにし
てもよい。By repeating the above-mentioned operations, the base plate of the cutting edge 2 is excavated by an equal amount to lower the caisson 1.
It is also possible to modify the subsidence of caisson 1 by drilling a partial range by self only any excavator A 1 to A 4.
【００３０】[0030]
【発明の実施の形態２】図７は各排土用スクリュー体３
０ａ，３０ｂの羽根３２，３２の螺旋方向と回転方向を
回転カッタ２０ａ，２０ｂの掘削刃２２，２２と同じに
した他の実施の形態を示す。本例の作用効果は基本的に
先の実施の形態１と同様である。Second Embodiment FIG. 7 shows each of the screw bodies 3 for discharging soil.
Another embodiment is shown in which the spiral direction and the rotation direction of the blades 32, 32 of 0a, 30b are the same as the excavating blades 22, 22 of the rotary cutters 20a, 20b. The operation and effect of this example are basically the same as those of the first embodiment.
【００３１】[0031]
【発明の実施の形態３】既述した実施の形態１では断面
矩形の刃口２の各直線部に掘削機Ａ1〜Ａ4を往復走行さ
せて掘削する場合について説明したが、ケーソンの刃口
の平面形が楕円形または円形を呈する場合は、複数の掘
削機を一定方向に向けて走行させて掘削するようにして
も良い。Third Embodiment In the first embodiment described above, a case has been described in which excavators A 1 to A 4 are reciprocated to excavate each straight portion of the cutting edge 2 having a rectangular cross section. When the plane shape of the mouth is elliptical or circular, a plurality of excavators may be driven in a certain direction to excavate.
【００３２】[0032]
【発明の効果】回転カッタの螺旋形を呈する掘削刃と、
排土用スクリュー体の螺旋形を呈する羽根とを重合する
ようにした。そのため、螺旋形の掘削刃や羽根の間に異
物が入り込み難くなるうえに、仮に異物が挟まったとし
ても掘削刃や羽根の何れか一方が何れか他方に挟まった
異物を強制的に破砕したり掻き落とすことができる。し
たがって、掘削機の排土効率を低下させることを回避し
て、効率のよい掘削作業と排土作業を持続できる。According to the present invention, a drilling blade having a spiral shape of a rotary cutter,
The helical blade of the screw body for discharging the earth was polymerized. This makes it difficult for foreign matter to enter between the helical digging blade and the blade, and even if foreign matter is caught, one of the digging blade and the blade forcibly crushes the foreign matter caught between the other. Can be scraped off. Therefore, it is possible to avoid a decrease in the earth discharging efficiency of the excavator, and to continue the efficient drilling operation and the earth discharging operation.
【図１】 掘削機を下面側から見た平面図FIG. 1 is a plan view of an excavator as viewed from below.
【図２】 ケーソン内側から見た刃掘削機の側面図Fig. 2 Side view of the blade excavator viewed from the inside of the caisson
【図３】 図２におけるIII −III の断面図FIG. 3 is a sectional view taken along the line III-III in FIG. 2;
【図４】 左半の回転カッタと排土用スクリュー体の重
合部の拡大図FIG. 4 is an enlarged view of the overlapping portion of the left half rotating cutter and the screw body for discharging soil.
【図５】 図１におけるＶ−Ｖの断面図FIG. 5 is a sectional view taken along line VV in FIG. 1;
【図６】 複数組の掘削機を装備したケーソンを刃口側
から見た矢視図FIG. 6 is an arrow view of a caisson equipped with a plurality of sets of excavators as viewed from a cutting edge side.
【図７】 他の掘削機の説明図FIG. 7 is an explanatory view of another excavator.
Ａ1〜Ａ4 掘削機 １ ケーソン ２ ケーソンの刃口 ３ 鋼板 ４ 棒体 １０ 基板 ２０ａ，２０ｂ 回転カッタ ２１ 回転軸 ２２ 掘削刃 ３０ａ，３０ｂ 排土用スクリュー体 ３１ 回転駆動軸 ３２ 羽根A 1 to A 4 excavator 1 caisson 2 caisson cutting edge 3 steel plate 4 rod body 10 substrate 20a, 20b rotating cutter 21 rotating shaft 22 digging edge 30a, 30b discharge doyo screw member 31 rotates the drive shaft 32 vanes
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) E02D 23/08 E21D 1/06 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) E02D 23/08 E21D 1/06
Claims (5)
て移動可能に配置された基板と、該基板の下面に回転可
能に設置され、刃口直下地盤を掘削する回転カッタと、
該回転カッタと平行で回転可能に配置され、削土をケー
ソン内側へ排出する排土用スクリュー体とを具備する掘
削機において、 前記回転カッタの掘削刃が螺旋形を呈すると共に、 前記排土用スクリュー体の羽根が螺旋形を呈し、 前記回転カッタの螺旋形を呈する掘削刃と、排土用スク
リュー体の螺旋形を呈する羽根とを重合するように配置
したことを特徴とする、 ケーソン用掘削機。Claims: 1. A substrate disposed so as to be movable along a cutting edge of a caisson along a cutting edge, a rotary cutter rotatably installed on a lower surface of the substrate, and excavating a base plate directly at the cutting edge,
An excavating screw body disposed in parallel with the rotary cutter so as to be rotatable and discharging soil to the inside of a caisson, wherein the excavating blade of the rotary cutter has a helical shape, The excavator for a caisson, wherein the blade of the screw body has a spiral shape, and the excavating blade of the rotary cutter having a spiral shape is arranged so as to overlap the spiral blade of the screw body for earth discharging. Machine.
用スクリュー体とにより対を成す掘削排土手段を基板の
両端部に夫々設置したことを特徴とする、ケーソン用掘
削装置。2. A caisson excavator according to claim 1, wherein excavating and discharging means forming a pair with a rotary cutter and a discharging screw body are respectively installed at both ends of the substrate.
用スクリュー体の内側に排土用スクリュー体と平行に排
土案内面を形成したことを特徴とする、ケーソン用掘削
装置。3. An excavator for a caisson according to claim 1, wherein a discharging guide surface is formed inside the discharging screw body in parallel with the discharging screw body.
て、対を成す回転カッタの掘削刃と排土用スクリュー体
の羽根を逆向きに形成すると共に、回転カッタと各排土
用スクリュー体を夫々逆方向に回転し得るように構成し
たことを特徴とする、ケーソン用掘削装置。4. An excavating blade of a pair of rotating cutter and a blade of a screw body for discharging the soil in a pair as defined in claim 1, wherein the rotating cutter and the screw body for discharging the soil are paired. Characterized in that they can be rotated in opposite directions, respectively.
て、対を成す回転カッタの掘削刃と排土用スクリュー体
の羽根を同一の向きに形成すると共に、回転カッタと各
排土用スクリュー体を夫々同一方向に回転し得るように
構成したことを特徴とする、ケーソン用掘削装置。5. The rotary cutter according to claim 1, wherein a pair of the rotary cutter and the blade of the discharging screw body are formed in the same direction, and the rotary cutter and each of the discharging screws are formed in the same direction. A caisson excavator, characterized in that the bodies can be rotated in the same direction, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18922999A JP3177840B2 (en) | 1999-07-02 | 1999-07-02 | Drilling rig for caisson |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18922999A JP3177840B2 (en) | 1999-07-02 | 1999-07-02 | Drilling rig for caisson |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001020293A JP2001020293A (en) | 2001-01-23 |
| JP3177840B2 true JP3177840B2 (en) | 2001-06-18 |
Family
ID=16237761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18922999A Expired - Fee Related JP3177840B2 (en) | 1999-07-02 | 1999-07-02 | Drilling rig for caisson |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3177840B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4558456B2 (en) * | 2004-11-19 | 2010-10-06 | 光洋自動機株式会社 | Caisson structure |
-
1999
- 1999-07-02 JP JP18922999A patent/JP3177840B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001020293A (en) | 2001-01-23 |
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