JPS5934638Y2 - Continuous wall trench excavator - Google Patents

Description

【考案の詳細な説明】 本考案は地下・連続壁溝の掘削機に関する。[Detailed explanation of the idea] The present invention relates to an excavator for underground and continuous wall trenches.

地下連続壁溝の掘削は、掘削機を地上に設置した架装槽
で精度よく位置決めを行ない、この位置からワイヤーロ
ープ又はガイドマストにて地下深く吊り降し掘削する方
法が一般的である。A common method for excavating underground continuous wall trenches is to accurately position an excavator in a tank installed above ground, and then suspend the excavator from this position deep underground using a wire rope or guide mast.

この掘削方法は、掘削機の自重を掘削部の貫入力として
利用し、又その自重による垂直性をたよりに穿溝精度を
保つものであるから、他層の不均等な硬・軟等によって
掘削機は傾斜しく但し、貫入当初は地表にガイド等を設
けることで傾斜を防止できるので、ガイド等を用いる場
合には貫入当初を除く）、これが掘削途中において掘削
方向が曲がり、予定掘削位置から外れる場合がある。This excavation method uses the excavator's own weight as the penetration force of the excavated part, and relies on the verticality of the excavator's own weight to maintain drilling accuracy. However, at the beginning of penetration, it is possible to prevent tilting by installing a guide, etc. on the ground surface, so if a guide, etc. is used, the excavation direction will bend during excavation, and the excavation direction will deviate from the planned excavation position. There are cases.

この事は溝の曲がりとして生じ、この曲がりは、鉄筋の
挿人、連続壁継手部等にあたえる悪影響は太きいがら、
精度よく掘削する必要がある。This occurs as a bend in the groove, and although this bend has a serious negative impact on reinforcing bars, continuous wall joints, etc.
It is necessary to excavate with high precision.

そこで従来は、第１図に示した如く、本体１の後部に、
修正板２，２を対設し、弾性伸縮体３を介して掘削壁面
に加圧し、掘削方向を修正する修正部４を備えたものが
実施されている。Therefore, conventionally, as shown in FIG. 1, at the rear of the main body 1,
A device has been implemented which includes correction plates 2, 2 arranged opposite each other, and a correction section 4 that applies pressure to the excavation wall surface via an elastic stretchable body 3 to correct the excavation direction.

しかしこの掘削機によると、修正部を本体の後部に設け
た為に、第２図Ａに示したように、掘削機の傾斜は、先
端の掘削部５を支点として垂直に修正されるか、又は第
２図Ｂに示したように、掘削機本体が予定掘削位置ａよ
り横に水平移動して修正されることが起り、その為予定
掘削位置への修正は困難であって精度のよい溝掘削は望
めなかった。However, according to this excavator, since the correction part is provided at the rear of the main body, the inclination of the excavator is corrected vertically using the excavation part 5 at the tip as a fulcrum, as shown in FIG. Or, as shown in Fig. 2B, the excavator body may move horizontally laterally from the planned excavation position a and be corrected, making it difficult to correct the planned excavation position and not allowing accurate trenching. There was no hope of excavation.

又本体の後部に設けられた修正部は、掘削された溝壁（
掘削壁面）が土庄でせり出して溝幅が狭くなる為に、本
体後部を大きく振らせることができず、十分に作用し得
ないと云う問題点があった。In addition, the correction part provided at the rear of the main body is attached to the excavated trench wall (
Since the excavated wall (excavated wall surface) protrudes at the tonosho and the groove width becomes narrow, the rear part of the main body cannot be swung greatly and the machine cannot function sufficiently.

本考案は上記従来の難点を除去すべく改良したもので、
本体の両外側に固設される案内板を可及的長く設けると
共に制御部を本体の下部に設け、最初に位置決めされた
高精度の垂直性を常に基準として掘削部を修正しながら
掘削当初の掘削精度を高め、それ等を掘削基準として掘
削機の傾斜を最小限に止めると共に掘削機が傾斜した場
合は、掘削部を直接掘削設定位置に移動修正できて高精
度掘削を可能とした溝掘削機を得たものである。This invention is an improvement to eliminate the above-mentioned conventional difficulties.
Guide plates fixed on both sides of the main body are installed as long as possible, and a control unit is installed at the bottom of the main body. Trench excavation that increases excavation accuracy, minimizes the inclination of the excavator using these as the excavation standards, and if the excavator inclines, the excavation section can be moved directly to the excavation setting position and corrected, enabling high-precision excavation. It was a good opportunity.

以上本考案を、連続壁溝掘削用としての矩形掘削機を図
示した一実施例について説明する。The present invention will be described above with reference to an embodiment illustrating a rectangular excavator for excavating a continuous wall trench.

第３図、第４図において、掘削機Ａは、横断図を矩形に
枠組形成した本体１１と、該本体の下部に複数個のドリ
ルビット１２・・・・・・とサイドカッター１３・・・
・・・を夫々電動機等の駆動源１４に連動連結して垂設
し形成した掘削部１５と、本体の両外側に対設した案内
板１６．１６・・・・・・と、リバースシャフト１７と
、氷中モータ１８等から形成されるもので、本考案にお
いては、本体１１の下部前後に、エアー又は油圧等の圧
力媒体を動力源としたジヤツキ１９及びそのジヤツキ出
力軸２０の外端に夫々上記案内板と略等形の修正板２１
を固設させて成る制御部２２．２２を対設する。In FIGS. 3 and 4, the excavator A includes a main body 11 having a rectangular cross-sectional view, and a plurality of drill bits 12 and side cutters 13 at the bottom of the main body.
. . . are connected to a drive source 14 such as an electric motor, respectively, and are vertically installed. Guide plates 16, 16, . In the present invention, a jack 19 powered by a pressure medium such as air or hydraulic pressure is installed at the front and back of the lower part of the main body 11, and an outer end of the jack output shaft 20 is installed. Correction plates 21 each having approximately the same shape as the above-mentioned guide plate
A control unit 22.22 is provided oppositely.

詳しくはその制御部は第５図に示したように、支持部２
５を中心にその前後左右配置にジヤツキ１９・・・・・
・を４個固定し、それ等軸２０に夫々修正板２１・・・
・・・を固定し、前後配置とした右側二個のジヤツキを
、又左側二個のジヤツキを夫々ホース２６．２６で連通
連結し、夫々二個のジヤツキに圧力媒体を同時に送１人
し又はそれから逸出して駆動するように設けられる。Specifically, as shown in FIG.
5 is the center, and the front, back, left and right arrangement is 19...
・Fix four pieces, and attach each correction plate 21 to the equiaxed 20...
The two jacks on the right side and the two jacks on the left side are fixed and arranged in front and back, and the two jacks on the left side are connected through hoses 26 and 26 respectively, and a pressure medium is simultaneously sent to each of the two jacks, or It is provided to emanate from and drive.

又上記案内板１６．１６は、その長さＬを本体１１より
も長く設定する。Further, the length L of the guide plate 16.16 is set longer than that of the main body 11.

この事は上記ジヤツキストロークの微動が掘削機の傾斜
修正に影響しないようにする為と、掘削当初の掘削精度
を高めるためであって、この事も本考案の特長の一つで
ある。This is to prevent the slight movement of the jack stroke from affecting the inclination correction of the excavator and to improve the accuracy of excavation at the beginning of excavation, and this is also one of the features of the present invention.

更に本体１１には傾斜計２４を固定して地上に設置した
傾斜ゲージ（図示せず）に接続させ、傾斜ゲージで掘削
機の垂直精度を保つように設けである。Furthermore, an inclinometer 24 is fixed to the main body 11 and connected to an inclination gauge (not shown) installed on the ground, so that the inclination gauge maintains the vertical accuracy of the excavator.

而して本考案の掘削機は、架装槽で精度よく位置決めを
行ない、この位置から下げ振りの原理で、ワイヤロープ
により機体自重で垂直に吊り下げられ、傾斜計２４で垂
直度は保持される。Therefore, the excavator of the present invention is precisely positioned in the mounting tank, and from this position, it is suspended vertically by the weight of the machine using a wire rope based on the plumbum principle, and the verticality is maintained using the inclinometer 24. Ru.

次に駆動部を始動して掘削部を回転駆動させ、機体自重
を掘削部の貫入力として利用し、掘削するが、穿溝中、
掘削機Ａが例えば第６図Ａに示したように傾斜したと仮
定すると、その傾斜は傾斜計２４で地上のゲージに検出
されるから、それに基いて地上での操作によって右側の
制御部２２のジヤツキ１９．１９を駆動し、傾斜した側
即ち図面紙上右側の修正板２１．２１により掘削壁面２
３を圧迫して掘削部１５を図面紙上左側に移動させると
、右側の案内板上端が支点となって（図では示してない
が、案内板上端付近で溝壁が土庄でせり出して溝幅が狭
くなる）、掘削部１５は左側に移動し、掘削機は第６図
のように設定位置すに修正される。Next, the drive unit is started to rotate the excavation unit, and the weight of the machine itself is used as the penetration force of the excavation unit to excavate, but during drilling,
Assuming that the excavator A is tilted as shown in FIG. 6A, for example, the tilt is detected by the inclinometer 24 on the ground gauge, and based on this, the right control unit 22 is controlled by the ground operation. The jack 19.19 is driven and the excavated wall surface 2 is adjusted by the correction plate 21.21 on the inclined side, that is, the right side on the drawing paper.
3 and move the excavation part 15 to the left side on the drawing paper, the upper end of the guide plate on the right side becomes a fulcrum (although it is not shown in the figure, the groove wall protrudes at the tonosho near the upper end of the guide plate, and the groove width decreases. (narrowing), the excavator 15 is moved to the left and the excavator is corrected to the set position as shown in FIG.

この際、上端部が支点となる案内板１６は可及的長く設
定しである為、ジヤツキストロークの微動が修正に影響
する事はないから、ジヤツキストローク微調整の為の特
別な装置も必要としないだけでなく、掘削当初の掘削精
度を高めることにもなる。At this time, since the guide plate 16 whose upper end is the fulcrum is set as long as possible, slight movements of the jack stroke will not affect the correction, so a special device is required for fine adjustment of the jack stroke. Not only is this not necessary, but it also improves the accuracy of excavation at the beginning of excavation.

本案によれば、掘削部１５近傍の本体１１の下部外面に
、修正板２１．２１．２１．２１とジヤツキ１９，１９
゜１９．１９とから成る複数の制御部２２，２２，２２
．２２を、掘削壁面２３へ対面させて対設し、又これら
の制御部２２．２２．２２．２２の上に縦に列べて、本
体１１の上部外面に、本体１１よりも長い縦長の複数の
案内板１６．１６，１６．１６を、掘削壁面２３へ当接
すべく対設しているので、掘削途中で掘削機が傾斜した
場合に、下位の制御部２２を作動することにより、本体
１１よりも長い案内板１６．１６・・・・・・の上端部
、即ち下位の制御部２２から十分に距離を隔てた案内板
上端部が支点となって、該支点を中心に本体をやや回動
し、且つ本体下端（先端）の掘削部１５を直接移動して
、掘削機の傾斜を修正でき、このように本体下端の掘削
部１５から十分上方にある案内板上端部を支点とするこ
とにより、未だ傾斜を生じていない掘削溝の上位部を基
準にその傾斜を修正でき、しかもその上位部では掘削壁
面２３が土圧でせり出して溝幅が狭くなることで振れを
少なくすることから、正規の位置、方向へ確実、迅速に
修正でき、正確な設計通りの掘削溝を容易に迅速に掘削
できる。According to the present invention, the correction plate 21.21.21.21 and the jacks 19, 19 are installed on the lower outer surface of the main body 11 near the excavation part 15.
A plurality of control units 22, 22, 22 consisting of ゜19.19
．． 22 facing the excavation wall surface 23, and arranged vertically above these control parts 22. Since the guide plates 16.16, 16.16 are arranged oppositely so as to come into contact with the excavation wall surface 23, when the excavator tilts during excavation, the main body can be moved by operating the lower control section 22. The upper end of the guide plate 16. The inclination of the excavator can be corrected by rotating and directly moving the excavating part 15 at the lower end (tip) of the main body, and in this way, the upper end of the guide plate, which is sufficiently above the excavating part 15 at the lower end of the main body, is used as a fulcrum. By doing so, the inclination can be corrected based on the upper part of the excavated trench which has not yet caused an inclination, and furthermore, in the upper part, the excavated wall surface 23 protrudes due to earth pressure and the groove width becomes narrower, thereby reducing the runout. , the correct position and direction can be reliably and quickly corrected, and excavation trenches can be easily and quickly excavated according to the accurate design.

そして、下位の制御部２２から支点となる案内板上端ま
での距離が長いので、微細な変動を阻止できる。Further, since the distance from the lower control section 22 to the upper end of the guide plate serving as the fulcrum is long, minute fluctuations can be prevented.

加えて、地下連続壁溝の掘削は、一般に隣地境界線の近
くとなることが多いが、隣地への進入等の不都合を生ぜ
ず、掘削用付帯機器の配置等のために隣地を借用しなけ
ればならないと云うこともない。In addition, although underground continuous wall trenches are generally excavated near the boundary line of neighboring properties, it is necessary to avoid inconveniences such as encroachment into neighboring properties and to rent neighboring land for the placement of excavation equipment. There is no need to say that.

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

添付図面第１図は公知の修正部を備えた掘削機の側面図
、第２図Ａ、Ｂは同掘削機による修正例を示した説明図
、第３図乃至第６図は本考案掘削機の実施例を示したも
ので第３図は正面図、第４図は掘削中の状態を地層部の
み断面して示した掘削機の側面図、第５図は第４図にお
ける■−ｖ線横線面断面図６図Ａ、Ｂは掘削中の掘削機
傾斜状態と、傾斜を修正した状態を示した説明図である
。 １１・・・・・・本体、１５・・・・・・掘削部、１６
・・・・・・案内板、１９・・・・・・ジヤツキ、２１
・・・・・・修正板、２２・・・・・・制御部。Figure 1 of the attached drawings is a side view of an excavator equipped with a known modification part, Figures 2A and B are explanatory diagrams showing examples of modifications made by the same excavator, and Figures 3 to 6 show the excavator of the present invention. Fig. 3 is a front view, Fig. 4 is a side view of the excavator during excavation with only the stratum section cut away, and Fig. 5 is the line ■-v in Fig. 4. Horizontal line cross-sectional views 6A and 6B are explanatory diagrams showing a tilted state of the excavator during excavation and a state in which the tilt has been corrected. 11... Main body, 15... Excavation part, 16
... Information board, 19 ... Jackpot, 21
...... Correction board, 22... Control section.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 本体１１の下端に掘削部１５を備え、適宜架装槽から吊
り下げて掘削する連続壁溝掘削機において、掘削部１５
近傍の本体１１の下部外面に、掘削壁面２３へ対面させ
る複数の制御部２２，２２，２２．２２を対設し、これ
らの制御部は本体１１の下部外面に適宜圧力媒体で作動
するジヤツキ１９，１９，１９．１９を掘削壁面２３へ
向けて固定し、且つ掘削壁面２３へ当接させる修正板２
１．２１．２１．２１を設けて、該修正板をそのジヤツ
キ１９，１９，１９．１９により掘削壁面２３へ向は出
入させるよう構成し、又それらの制御部２２．２２．２
２．２２の上に縦に列べて、本体１１の上部外面に、掘
削壁面２３へ当接させる複数の案内板１６゜１６．１６
．１６を対設し、これらの案内板は本体１１よりも長い
縦長のものとし、本体１１には傾斜計２４を固定して地
上に設置した傾斜ゲージに接続させたことを特徴とする
連続壁溝掘削機。In a continuous wall trench excavator that is provided with an excavation part 15 at the lower end of the main body 11 and excavates by suspending it from a mounting tank as appropriate, the excavation part 15
A plurality of control parts 22, 22, 22.22 are provided on the lower outer surface of the main body 11 in the vicinity thereof, and are arranged to face the excavation wall surface 23. , 19, 19.19 is fixed toward the excavation wall surface 23 and is brought into contact with the excavation wall surface 23.
1.21.21.21 is provided, and the correction plate is configured to be moved in and out of the excavation wall surface 23 by the jacks 19, 19, 19.19, and a control section 22.22.2 thereof is provided.
2. A plurality of guide plates 16° 16.16 arranged vertically on top of 22 and brought into contact with the excavation wall surface 23 on the upper outer surface of the main body 11.
．． 16 are arranged opposite each other, these guide plates are longitudinally longer than the main body 11, and an inclinometer 24 is fixed to the main body 11 and connected to an inclination gauge installed on the ground. excavator.