JPS603145Y2 - Deep trench drilling equipment - Google Patents

Description

【考案の詳細な説明】 本考案は、地中に安定液を使用しながら垂直の深溝孔を
掘削する移動垂直案内部材付き油圧グラブ式の深溝孔掘
削装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved hydraulic grab-type deep trench drilling device with a movable vertical guide member for drilling vertical deep trench holes underground using a stabilizing liquid.

移動垂直案内部材付き油圧グラブ式の深溝孔掘削装置に
は、通称ケリ一式掘削機と呼ばれるものが従来より知ら
れている。BACKGROUND OF THE INVENTION As a hydraulic grab-type deep trench drilling device with a movable vertical guide member, what is commonly referred to as a butt-type excavator is conventionally known.

これは掘削時のグラブの案内となる移動垂直案内部材を
１本あるいは複数本用い、これを地表上の固定垂直案内
部材に上下移動自在に装着して望遠鏡方式の案内部材を
形成し、前記地表上の固定垂直案内部材により前記移動
垂直案内部材の垂直方向の傾き等を常に抑制しつつ深溝
孔を掘削する形式の装置である。This uses one or more movable vertical guide members to guide the grab during excavation, and this is attached to a fixed vertical guide member on the ground surface so as to be movable up and down to form a telescopic guide member. This type of device excavates a deep groove hole while always suppressing the vertical inclination of the movable vertical guide member using the upper fixed vertical guide member.

なお、本明細書では、固定垂直案内部材とは、掘削作業
時左右前後に移動するかまたは移動傾斜可能であるが、
上下方向（孔の掘削方向）に対しては移動しない垂直案
内部材のことをいい、移動垂直案内部材とは、上下方向
に移動する垂直案内部材のことをいう。Note that in this specification, the fixed vertical guide member refers to a fixed vertical guide member that can be moved left and right, front and back, or can be moved and tilted during excavation work.
This refers to a vertical guide member that does not move in the vertical direction (the direction in which the hole is excavated), and the movable vertical guide member refers to a vertical guide member that moves in the vertical direction.

また垂直とは地表面に（水平面）に対して垂直、すなわ
ち鉛直のことをいう。Also, vertical means perpendicular to the ground surface (horizontal plane), that is, vertical.

前記したように、従来のものは、地表上の固定垂直案内
部材内に移動垂直案内部材を上下移動自在に装着して望
遠鏡方式の案内部材を形成したものであるため、掘削深
度が大きくなると、必然的に移動垂直案内部材を長大に
するか本数を増やさなければならなくなる。As mentioned above, in the conventional type, a movable vertical guide member is attached to a fixed vertical guide member on the ground surface so as to be movable up and down to form a telescopic guide member, so that as the excavation depth increases, Inevitably, the movable vertical guide members must be made longer or their number must be increased.

このように移動垂直案内部材を長大にしたり、本数を増
やしたりすると、重量が増大し、これを懸吊するクレー
ンは大能力で大形のものを必要とする。Increasing the length or increasing the number of movable vertical guide members increases the weight, and requires a large-sized crane with a large capacity to suspend the movable vertical guide members.

このため、例えば６０汎以上の大深度の深溝孔の掘削は
実用上極めて困難であると共に、非経済的であり、さら
に前記移動垂直案内部材を長大にすると機高が非常に高
くなり、空頭制限のある場所での掘削はできない等、幾
多の重大な欠点がある。For this reason, for example, it is extremely difficult and uneconomical to excavate a deep trench hole with a depth of 60 mm or more.Furthermore, if the movable vertical guide member is made long, the machine height becomes extremely high, which limits the air head. It has a number of serious drawbacks, such as the inability to excavate in certain areas.

本考案は、このような従来技術の欠点に鑑み、簡単な構
成で、大深度の深溝孔の垂直掘削が可能であり、その垂
直精度が高くさらに経済的に優れた深溝孔掘削装置を提
すべくなされたものである。In view of the shortcomings of the prior art, the present invention proposes a deep trench drilling device that has a simple configuration, is capable of vertically drilling deep trenches at great depths, has high vertical accuracy, and is economical. This is something that has been done as much as possible.

この目的を達成するため、本考案の深溝孔掘削装置は、
下端に油圧式グラブを装置した移動垂直案内部材を、固
定垂直案内部材に対して上下移動自在でかつ挿脱自在と
なるように固定垂直案内部材内を通したワイヤロープで
懸吊し、その油圧式グラブを装着した移動垂直案内部材
に、該案内部材の上下方向の所定範囲にわたって移動可
能に浮力式安定部材を設けてＡ□、Ａ２構威したもので
ある。In order to achieve this purpose, the deep trench drilling device of the present invention has the following features:
A movable vertical guide member equipped with a hydraulic grab at its lower end is suspended by a wire rope passed through the fixed vertical guide member so that it can move up and down relative to the fixed vertical guide member and can be inserted into and removed from the fixed vertical guide member. A □ and A2 configurations include a movable vertical guide member to which a type glove is attached, and a buoyancy type stabilizing member that is movable over a predetermined range in the vertical direction of the guide member.

以下本考案を図面について詳細に説明する。Hereinafter, the present invention will be explained in detail with reference to the drawings.

第１図ないし第８図は本考案の一実施例を示している。1 to 8 show an embodiment of the present invention.

第１図及び第２図は全体構成を示しており、油圧グラブ
２を有する全旅回形のクレーン１が示されている。1 and 2 show the overall configuration, and a full-travel crane 1 having a hydraulic grab 2 is shown.

３はブームで、これは支点４を中心として回動自在に枢
着されており、その上端に止着したロープ５によって前
方にやや傾斜するようにクレーン本体に支持される。Reference numeral 3 denotes a boom, which is rotatably pivoted around a fulcrum 4, and is supported by a rope 5 fixed to the upper end of the crane body so as to be slightly inclined forward.

６は所定長の長尺の角筒状をなす（第５図参照）固定垂
直案内部材（以下固定案内と略称す）で、これは上端が
ブーム３と連結され、下端が支柱７で支持されることに
より、垂直に懸吊される。Reference numeral 6 denotes a fixed vertical guide member (hereinafter referred to as a fixed guide) in the shape of a long rectangular tube of a predetermined length (see Fig. 5), whose upper end is connected to the boom 3 and whose lower end is supported by the support column 7. This allows it to be suspended vertically.

８は断面Ｈ形をなす（第５図参照）所定長の長尺の移動
垂直案内部材（以下移動案内と略称す）で、これは固定
案内６内に摺動自在にかつ下方より挿脱自在に嵌合され
ており、その上端には、捲胴９に巻かれシープ１１．１
２に巻掛けたワイヤロープ１０が止着され、捲胴９が図
示しない駆動装置で回動されてワイヤロープ１０が捲上
げ又は捲下されることにより、上下動する。Reference numeral 8 denotes a long movable vertical guide member (hereinafter referred to as a movable guide) having an H-shaped cross section (see Fig. 5), which is slidable in the fixed guide 6 and can be inserted and removed from below. Sheep 11.1 is wound around the winding drum 9 at its upper end.
The wire rope 10 wound around the wire rope 2 is fixed, and the winding barrel 9 is rotated by a drive device (not shown) to wind up or wind down the wire rope 10, thereby moving up and down.

第３図及び第４図は本考案に係る部分を拡大して示す図
で、第３図はグラブ２を吊上げた状態を示し、第４図は
掘削状態を示す。FIGS. 3 and 4 are enlarged views of parts related to the present invention, with FIG. 3 showing the grab 2 in a lifted state, and FIG. 4 showing the grab 2 in an excavating state.

固定案内６の下端の挿脱部６ａは移動案内８の上端８ａ
の挿入を容易とするために末広がり状をなしており、移
動案内の上端８ａも又同様の目的で先細りの形状に形成
されている。The insertion/removal portion 6a at the lower end of the fixed guide 6 is the upper end 8a of the movable guide 8.
The upper end 8a of the moving guide is also tapered for the same purpose.

１３は移動案内８に上下動自在に外嵌された浮力式安定
部材である。Reference numeral 13 denotes a buoyant stabilizing member that is fitted onto the movement guide 8 so as to be able to move up and down.

この部材１３は、浮力性物体、例えば発泡スチロール１
４をほぼ長円形をなす（第６図参照）缶体内に内蔵する
か、あるいは内部を中空とした缶体からなるものである
。This member 13 is a buoyant object, such as a styrofoam 1
4 is housed in a nearly oval shaped can (see Fig. 6), or is made of a hollow can.

この安定部材１３の中央の前記移動案内８に嵌まる穴１
３ａには断面Ｈ形の移動案内８の空部に向けて内方に突
出する突出部１３ｂが設けられており（第７図参照）、
第４図に示すように、掘削時に深溝孔１５に満たされる
安定液の液面１６が地表面とほぼ同一レベルにある場合
、浮力によって該安定部材１３が上昇するが、移動案内
８に設けたストッパー８ｂに前記突出部１３ｂが当たる
ことにより、上方には抜は出ないようになっており、ま
た移動案内８の下端のフランジ８ｃで下限位置が規制さ
れるので、浮力式安定部材１３は、第４図に示す移動案
内８の上端近傍に於ける上限位置ＵＬと移動案内８のグ
ラブ２に近い位置に於ける下限位置ＬＬとの間のＬの範
囲で上下動が可能である。A hole 1 that fits into the movement guide 8 in the center of this stabilizing member 13
3a is provided with a protrusion 13b that protrudes inward toward the empty space of the moving guide 8 having an H-shaped cross section (see FIG. 7).
As shown in FIG. 4, when the liquid level 16 of the stabilizing liquid filled in the deep groove hole 15 during excavation is almost at the same level as the ground surface, the stabilizing member 13 rises due to buoyancy, but the Since the protruding portion 13b hits the stopper 8b, it does not come out upward, and the lower limit position is regulated by the flange 8c at the lower end of the moving guide 8, so the buoyant stabilizing member 13 Vertical movement is possible within a range L between the upper limit position UL near the upper end of the moving guide 8 and the lower limit position LL near the glove 2 of the moving guide 8 shown in FIG.

また、この安定部材１３の巾りは、グラブ２の巾Ｃより
やや狭い寸法を有し、かつその長さＥはグラブの最大拡
開時のグラブ先端間の間隔（すなわち孔１５の長径）よ
りやや小さな寸法を有している。Further, the width of this stabilizing member 13 is slightly narrower than the width C of the grab 2, and its length E is smaller than the distance between the tips of the grab when the grab is fully expanded (i.e., the long diameter of the hole 15). It has rather small dimensions.

また、この安定部材１３にはグラブ２を開閉するジヤツ
キ（図示せず）を駆動する圧油を給排するための油圧ホ
ース（図示せず）及び安定液を通過させる空間部１３ｃ
が設けられている。The stabilizing member 13 also includes a hydraulic hose (not shown) for supplying and discharging pressure oil that drives a jack (not shown) for opening and closing the grab 2, and a space 13c for passing the stabilizing liquid.
is provided.

それ故、浮力式安定部材は深溝孔内に所定の隙間を有し
ながら嵌まった状態で上下動することが可能である。Therefore, the buoyancy type stabilizing member can move up and down while being fitted into the deep groove hole with a predetermined gap.

この実施例のものは、上記の如く、移動案内８を固定案
内６から脱出させることができるようにし、かつ移動案
内８に所定の範囲で上下動可能に安定部材１３を設けて
いるから、掘削においては、ワイヤロープ１０が巻下げ
られることによって移動案内８が固定案内６より抜は出
してさらに掘削を進めることができ、大深度の掘削が可
能になる。In this embodiment, as described above, the movable guide 8 can be removed from the fixed guide 6, and the movable guide 8 is provided with a stabilizing member 13 that can move up and down within a predetermined range. When the wire rope 10 is lowered, the movable guide 8 can be pulled out from the fixed guide 6 and excavation can proceed further, making it possible to excavate to a great depth.

そして移動案内８が固定案内６より抜は出るような大深
度の掘削においては、安定部材１３の側面１３ｄ又は１
３ｄ′が溝孔１５の壁面１５ａ又は１５ａ′に接触し、
これによって移動案内８の傾きおよび水平方向のねじれ
が防止され、移動案内８を案内する作用をなすので、鉛
直方向に高精度で深溝孔１５の掘削ができるものである
。When excavating at a great depth where the movable guide 8 is larger than the fixed guide 6, the side surface 13d or 1 of the stabilizing member 13 is
3d' contacts the wall surface 15a or 15a' of the slot 15,
This prevents the movable guide 8 from tilting and twisting in the horizontal direction, and serves to guide the movable guide 8, so that the deep groove hole 15 can be excavated with high accuracy in the vertical direction.

第８図にこの実施例における掘削作業時の様子を示す。FIG. 8 shows the state of excavation work in this embodiment.

第８図のａに示すように、移動案内８の上方が固定案内
６内に挿入されている間は、固定案内６が移動案内８の
案内となり、移動案内８の傾きおよび垂平方向のねじれ
を抑制しつつ油圧グラブ２にて溝孔１５を掘削する。As shown in FIG. 8a, while the upper part of the movable guide 8 is inserted into the fixed guide 6, the fixed guide 6 serves as a guide for the movable guide 8, and the movable guide 8 is tilted and twisted in the vertical direction. The groove hole 15 is excavated with the hydraulic grab 2 while suppressing the

この場合、移動案内８に外嵌されている安定部材１３は
、液面部分で浮いた状態にある。In this case, the stabilizing member 13 fitted onto the moving guide 8 is floating on the liquid level.

深溝孔１５の掘削が進み、第８図すのように、移動案内
８の上端８ａが固定案内６下端の挿脱部６ａより抜は出
した後は、第４図に示したように安定部材の突出部１３
ｂが移動案内のストッパー８ｂと当たり、グラブ２の下
降に伴って安定部材の突出部１３ｂも押し下げられる。After the excavation of the deep groove hole 15 progresses and the upper end 8a of the movable guide 8 is pulled out from the insertion/removal part 6a at the lower end of the fixed guide 6 as shown in FIG. protrusion 13
b comes into contact with the stopper 8b of the movement guide, and as the grab 2 descends, the protrusion 13b of the stabilizing member is also pushed down.

そして、前記したように、安定部材１３の側面１３ｄ又
は１３ｄ′が深溝孔１５の側面１５ａ又は１５ａ′と接
触することにより、移動案内８の傾きおよび水平方向の
ねじれが防止され、安定部材１３が移動案内８の案内と
なって深溝孔１５を掘削する。As described above, the side surface 13d or 13d' of the stabilizing member 13 comes into contact with the side surface 15a or 15a' of the deep groove hole 15, thereby preventing the movement guide 8 from tilting and twisting in the horizontal direction. The moving guide 8 guides the deep groove hole 15 to be excavated.

グラブ２で土砂をつかみ込んだら、ワイヤロープ１０を
捲上げ、移動案内８を引上げると、固定案内６から離脱
していた移動案内８は、挿脱部６ａより固定案内６内に
導入され、また、安定部材１３は液面上に浮いた状態と
なり、移動案内８がさらに引上げられると、安定部材１
３もグラブ２と共に引上げられる（第８図Ｃ）。When the grab 2 grabs the earth and sand, the wire rope 10 is hoisted up and the moving guide 8 is pulled up, and the moving guide 8, which had been separated from the fixed guide 6, is introduced into the fixed guide 6 through the insertion/removal part 6a. Further, the stabilizing member 13 is in a state of floating on the liquid surface, and when the movement guide 8 is further pulled up, the stabilizing member 13
3 is also pulled up together with grab 2 (Fig. 8C).

そしてグラブ２内の掘削土は当然のことながら排出され
る。The excavated soil in the grab 2 is naturally discharged.

一般にケリ一式掘削機に於ては溝の深さに比例して機高
も大となり、従って大きなベースマシンを要するのであ
るが、本考案の深溝孔掘削装置はこの実施例に見られる
如く、大深度の溝孔を高精度で掘削することができ、か
つ構成簡単で、機高が低くてすむため、空頭制限のある
場所でも掘削ができ、かつ安定部材１３が設けられてい
るために機械の安定性が良くなるので大きなベースマシ
ンを要しないという顕著な効果を奏するのみならず、離
脱した移動案内が引上げられて次に挿入される時、この
挿入場所（挿脱部６ａ）が地表上にあるために挿入の具
合を日誌することができ、確実な挿入動作が可能である
という利点がある。Generally speaking, the height of a complete trench excavator increases in proportion to the depth of the trench, and therefore requires a large base machine, but the deep trench drilling equipment of the present invention has a large base machine, as seen in this embodiment. It is possible to excavate deep trenches with high precision, the configuration is simple, and the machine height is low, so it can be excavated even in places with limited air head, and the stability member 13 is provided, making the machine easy to use. This not only has the remarkable effect of not requiring a large base machine due to improved stability, but also ensures that when the detached moving guide is pulled up and inserted next time, this insertion location (insertion/removal section 6a) is above the ground surface. This has the advantage that it is possible to keep a diary of the insertion status, and that reliable insertion operation is possible.

更に本考案の深溝孔掘削装置は、移動案内８を固定案内
６又は浮力式安定部材１３にて垂直に案内することによ
り、深溝孔の垂直精度を確保するものであるから、確保
すべき垂直精度の程度に応じて固定案内及び移動案内を
所定の長さにするべきである。Furthermore, the deep groove drilling device of the present invention ensures the vertical accuracy of the deep groove hole by vertically guiding the movable guide 8 by the fixed guide 6 or the buoyant type stabilizing member 13. The fixed guide and the movable guide should have a predetermined length depending on the degree of the problem.

即ち、深度が比較的浅いうちは固定案内と移動案内との
嵌合により垂直精度を確保するため、その嵌合の水平方
向の許容誤差に応じて、嵌合寸法が十分長くなるように
する必要がある。In other words, in order to ensure vertical accuracy by fitting the fixed guide and the movable guide while the depth is relatively shallow, it is necessary to make the fitting dimension sufficiently long according to the horizontal tolerance of the fitting. There is.

また深度が深くなって移動案内を浮力式安定部材により
案内するときは、浮力式安定部材が深溝孔内で水平方向
に変位し得る許容寸法に応じて、上限位置にある浮力式
安定部材とグラブとの間隔寸法が十分長くなるようにす
る必要がある。In addition, when the depth increases and the movable guide is guided by a buoyant stabilizing member, the buoyant stabilizing member at the upper limit position and the grab It is necessary to ensure that the distance between the

移動案内と固定案内とはこれらの必要を満たすに足る長
さを有するべきであり、その意味で両案内はいずれも長
尺であるが、両案内を設けた本考案の深溝孔掘削装置は
、一般のケリ一式掘削機に比べてその機高をはるかに低
く押え得ることは勿論である。The movable guide and the fixed guide should have a length sufficient to meet these needs, and in that sense both guides are long, but the deep trench drilling equipment of the present invention equipped with both guides has the following characteristics: Of course, the height of the machine can be kept much lower than that of a general trench excavator.

しかもこの掘削装置は、浮力式安定部材が液没している
状態では、浮力式安定部材の浮力が移動案内の上端近傍
にかかるので、移動案内とグラブとからなるいわば柄付
きグラブの液浸時の重心が低く、それ故該浮力に因って
この重心から上限位置にある浮力式安定部材までの間隔
寸法に応じてこの柄付きグラブを起そうとするモーメン
トが作用する。Moreover, in this excavation equipment, when the buoyant stabilizing member is submerged in liquid, the buoyancy of the buoyant stabilizing member is applied near the upper end of the moving guide, so when the handled grab consisting of the moving guide and the grab is immersed in liquid, The center of gravity of the handle is low, and therefore, due to the buoyancy, a moment acts to raise the handled glove in accordance with the distance between the center of gravity and the buoyancy type stabilizing member located at the upper limit position.

このことは、浮力式安定部材が液没している状態に於け
る深溝孔の掘削の垂直性を向上するのに貢献するもので
ある。This contributes to improving the verticality of deep trench drilling when the buoyant stabilizer is submerged.

第９図ないし第１４図は、固定案内６の下端に所定の上
下範囲にわたって移動可能な緩衝案内部材を設けた例に
ついて示す。9 to 14 show an example in which a buffer guide member movable over a predetermined vertical range is provided at the lower end of the fixed guide 6.

第９図及び第１０図のものは、固定案内６の下方６′を
拡げ、その下端内周面には緩衝案内部材１７の落下防止
用部材１８を設け、緩衝案内部材１７が自重で下がると
きは、その上端に周設した落下防止用部材１９が前記落
下防止用部材１８に掛かるようにしたもので、緩衝案内
部材１７の下端は移動案内８の挿入を容易とするために
末広がり状をなしている。9 and 10, the lower part 6' of the fixed guide 6 is expanded, and a member 18 for preventing the shock absorbing guide member 17 from falling is provided on the inner peripheral surface of the lower end, so that when the shock absorbing guide member 17 falls under its own weight. The fall prevention member 19 provided around the upper end of the shock absorbing guide member 17 is configured to hang on the fall prevention member 18, and the lower end of the buffer guide member 17 is flared at the end to facilitate insertion of the moving guide 8. ing.

なお、この緩衝案内部材１７の内径は固定案内６の内径
と同じである。Note that the inner diameter of this buffer guide member 17 is the same as the inner diameter of the fixed guide 6.

このように、緩衝案内部材１７を設けることにより、も
し移動案内８の上端部が８′で示すように強く挿脱部１
７ａに当たったとしても、緩衝案内部材１７が一時上方
に逃げ、この当ったときの衝撃力が固定案内６に伝わら
ず、従ってブーム３に衝撃力が伝わらない。As described above, by providing the buffer guide member 17, if the upper end of the moving guide 8 is strongly attached to the insertion/removal portion 1 as shown by 8',
Even if it hits 7a, the buffer guide member 17 temporarily escapes upward, and the impact force at the time of this hit is not transmitted to the fixed guide 6, so that the impact force is not transmitted to the boom 3.

第１１図の例は、第９図の緩衝案内部材１７と固定部材
６の下端との間に圧縮ばね２０を介在させたものであり
、このようなばねを設けることにより緩衝効果をより一
層高めることができ緩衝案内部材１７の上下移動量をよ
り少なくすることができる。In the example of FIG. 11, a compression spring 20 is interposed between the buffer guide member 17 of FIG. 9 and the lower end of the fixed member 6, and by providing such a spring, the buffering effect is further enhanced. Therefore, the amount of vertical movement of the buffer guide member 17 can be further reduced.

第１２図は緩衝案内部材１７′を固定案内６の外側に設
けたもので、１８’、１９’は落下防止用部材であって
、この場合も第９図のものと同様の効果があげられる。In Fig. 12, a buffer guide member 17' is provided outside the fixed guide 6, and 18' and 19' are fall prevention members, and in this case, the same effect as in Fig. 9 can be achieved. .

第１３図の例は、第１２図の緩衝案内部材１７′の上端
と固定案内６の外周に設けた鍔２２との間に圧縮ばね２
１を介在させたもので、第１１図のものと同様の効果が
あげられる。In the example shown in FIG. 13, there is a compression spring 2 between the upper end of the buffer guide member 17' shown in FIG.
1, the same effect as that shown in FIG. 11 can be obtained.

第１４図の例は、下方を拡開させた挿脱部２３の上方に
水平な角環状の板２４を一体に設け、この板２４の上面
に複数本のボルト２５を立設し、かつボルト２５には圧
縮コイルばね２６を巻装し、−刃固定案内６の下端には
角環状のフランジ２７を設け、このフランジ２７の穴に
ボルト２５を挿入腰ナツト２８をはめて構成したもので
、第１１図、第１３図のものと同様の効果があげられる
。In the example shown in FIG. 14, a horizontal square annular plate 24 is integrally provided above the insertion/removal part 23 whose lower part is expanded, and a plurality of bolts 25 are erected on the upper surface of this plate 24. 25 is wound with a compression coil spring 26, a rectangular annular flange 27 is provided at the lower end of the blade fixing guide 6, a bolt 25 is inserted into a hole in this flange 27, and a waist nut 28 is fitted. The same effects as those in FIGS. 11 and 13 can be obtained.

なお、以上述べた本考案の実施例は第１５図ないし第１
８図に示すように変形することも可能であり、この装置
は、固定案内６に直接前記移動案内８を挿嵌するのでは
なく、移動案内８に対する固定案内６の案内作用を延長
するべく、両者間に別の移動案内３０を設けたものであ
る。The embodiments of the present invention described above are shown in FIGS. 15 to 1.
It is also possible to modify the device as shown in FIG. 8, in which the movable guide 8 is not inserted directly into the fixed guide 6, but in order to extend the guiding action of the fixed guide 6 with respect to the movable guide 8. Another movement guide 30 is provided between the two.

この移動案内３０は、角筒状をなしていて、角筒状の固
定案内６内に摺動自在に挿嵌されており、その上端外周
には、固定案内６の下端内周に固定した落下防止用部材
３１に最下移動位置にて当接する落下防止用部材３２を
固定してなり、かつ下端に移動案内８の挿入を容易とす
るための末広がり状の挿脱部３０ａを形成している。The moving guide 30 has a rectangular tube shape, and is slidably inserted into the rectangular tube-shaped fixed guide 6. On the outer periphery of the upper end, there is a droplet fixed to the inner periphery of the lower end of the fixed guide 6. A fall prevention member 32 that abuts on the prevention member 31 at the lowest movement position is fixed, and an insertion/removal portion 30a that widens toward the bottom is formed at the lower end to facilitate insertion of the movement guide 8. .

グラブ２を取付けた移動案内８は前記実施例と同様の構
造を有しており、この移動案内８に外嵌される浮力式安
定部材１３も同様の構造を有し、前記と同様に移動案内
８に取付けらでいる。The movement guide 8 to which the grab 2 is attached has the same structure as in the previous embodiment, and the buoyant stabilizing member 13 fitted onto the movement guide 8 also has the same structure, and the movement guide 8 has the same structure as the movement guide 8. It is attached to 8.

そして移動案内３０内に摺動自在にかつ挿脱自在に内嵌
されていて、ワイヤロープ１０の捲下腰液上げ動作に伴
って上下動する。It is slidably and removably fitted into the movement guide 30 and moves up and down as the wire rope 10 is rolled up and raised.

次にこの深溝孔掘削装置を用いて掘削作業を行う場合の
様子を第１８図により説明する。Next, the state of excavation work using this deep trench drilling device will be explained with reference to FIG. 18.

この深溝孔掘削装置は前記実施例の装置と同様に、第１
図、第２図で例示したようなりレーンに懸吊されて掘削
作業をなすものであって、第１８図ａ、 ｂに示すよう
に、移動案内８の上方が移動案内３０内に挿入されてい
る間は固定案内６が移動案内３０及び移動案内８の下降
の案内となり、該移動案内８の傾きおよび水平方向のね
じれを抑制しつつグラブ２にて溝孔１５を掘削する。This deep trench drilling device has a first
As illustrated in FIGS. 18 and 2, the excavation work is carried out by being suspended from a lane, and as shown in FIGS. 18a and 18b, the upper part of the moving guide 8 is inserted into the moving guide 30. During this time, the fixed guide 6 serves as a guide for the lowering of the moving guide 30 and the moving guide 8, and the groove hole 15 is excavated with the grab 2 while suppressing the inclination and horizontal twisting of the moving guide 8.

第１８図すのように、前記落下防止用部材３１，３２ど
うしが当接する位置まで下降すると、移動案内８のみが
下降し掘削がなされる。As shown in FIG. 18, when the fall prevention members 31 and 32 are lowered to a position where they come into contact with each other, only the moving guide 8 is lowered and excavation is performed.

溝孔１５の掘削が進み、第１８図Ｃに示すように移動案
内８の上端部８ａが移動案内３０の挿脱部３０ａより離
脱した後は、前記の実施例について説明したと同様に、
安定部材１３の側面１３ｄ又は１３ｄ′が溝孔１５の壁
面１５ａ又は１５ａ′に接触し、これにより移動案内８
の傾きおよび水平方向のねじれを防ぎ、移動案内８の案
内となって鉛直に深溝孔１５を掘削する。After the groove hole 15 has been excavated and the upper end 8a of the moving guide 8 is removed from the insertion/removal portion 30a of the moving guide 30 as shown in FIG.
The side surface 13d or 13d' of the stabilizing member 13 comes into contact with the wall surface 15a or 15a' of the slot 15, so that the movement guide 8
The movable guide 8 is guided to excavate the deep groove hole 15 vertically while preventing inclination and horizontal twisting of the movable guide 8.

グラブ２にて土砂をつかみ込んだら、ワイヤロープ１０
を液上げることによりグラブを取付けた移動案内８を引
上げる。After grabbing the earth and sand with grab 2, wire rope 10
By raising the liquid, the moving guide 8 to which the grab is attached is pulled up.

これによって、移動案内８が固定案内６に懸吊されてい
る移動案内３０内に導入され、さらに移動案内８が引上
げられることにより、安定部材１３の上面が移動案内３
０の挿脱部３０ａの下面に接し、安定部材１３の下面が
フランジ８ｃに接する所まで移動案内８が引上げられる
と移動案内３０も引上げられ、第１８図ｄのようにグラ
ブ２が地上に現われる。As a result, the movable guide 8 is introduced into the movable guide 30 suspended from the fixed guide 6, and as the movable guide 8 is further pulled up, the upper surface of the stabilizing member 13 is brought into contact with the movable guide 30.
When the moving guide 8 is pulled up to the point where the lower surface of the stabilizing member 13 contacts the lower surface of the insertion/removal portion 30a of the 0, the moving guide 30 is also pulled up, and the grab 2 appears on the ground as shown in FIG. 18d. .

そしてグラブ２内の掘削土は排出される。The excavated soil in the grab 2 is then discharged.

このように、移動案内３０，８の降下、グラブ２による
溝孔の掘削、移動案内３０，８の引上げ等を繰り返えし
て深溝孔１５の掘削をする。In this way, the deep groove hole 15 is excavated by repeating the lowering of the movable guides 30, 8, the excavation of the groove by the grab 2, the pulling up of the movable guides 30, 8, etc.

この様に第１５〜１８図に示す深溝孔掘削装置において
は、固定案内６とグラブ２を取付けた移動案内８との間
に別の移動案内３０を設けているので、深い深度まで垂
直性の保持が容易で、高精度の掘削が可能である。As described above, in the deep trench drilling equipment shown in FIGS. 15 to 18, another moving guide 30 is provided between the fixed guide 6 and the moving guide 8 to which the grab 2 is attached, so that verticality can be maintained even at deep depths. Easy to hold and allows for high precision drilling.

なお、移動案内３０を複数本とした望遠鏡方式の移動案
内を採用することもできる。Note that it is also possible to employ a telescope-type movement guide in which a plurality of movement guides 30 are provided.

以上述べたように、本考案においては、クレーンで懸垂
される固定案内に対し、油圧グラブを下端に取付けられ
、ワイヤロープで懸吊された移動案内を摺動自在にかつ
挿脱自在に設け、該移動案内に所定範囲内で上下動しう
る浮力式安定部材を摺動自在に取付けたので、油圧グラ
ブを取付けた移動案内が下方に抜出た後も、安定部材に
よりグラブを取付けた移動案内をガイドさせて溝孔を掘
削することができるから、大深度の深溝孔の垂直掘削が
可能となる。As described above, in the present invention, a hydraulic grab is attached to the lower end of the fixed guide suspended by a crane, and a movable guide suspended by a wire rope is provided slidably and detachably. Since a buoyant stabilizing member that can move up and down within a predetermined range is slidably attached to the moving guide, even after the moving guide with the hydraulic grab attached is pulled out downward, the stabilizing member will keep the moving guide with the grab attached. Since the trench can be excavated by guiding the trench, it becomes possible to vertically excavate a deep trench.

また、掘削装置としての構成が極めて簡単となり、機高
が低くてすむため、空頭制限のある場所でも掘削ができ
る。In addition, the configuration of the excavator is extremely simple and the height of the excavator is low, making it possible to excavate even in locations with limited free head.

また、構成が簡単化され、従来の望遠鏡方式のものに比
べて軽量のものとなるため、機械の安定性が良くなるの
で、大きなベースマシンを必要としないですむ。In addition, the structure is simplified and it is lighter than the conventional telescope type, which improves the stability of the machine and eliminates the need for a large base machine.

さらにこのことによって、深溝孔の工事費を低下させる
ことができる。Furthermore, this makes it possible to reduce the cost of constructing deep trenches.

即ち本考案は、深溝孔が垂直に掘削され、一定の断面積
の孔が得られるということと、掘削された孔内に安定液
が満たされていることを巧みに利用し、浮力式安定部材
を用いて機械の構成の簡略化及び小形化と大深度の深溝
孔の掘削とを可能としたもので、実益のある極めて優れ
た考案である。In other words, the present invention cleverly utilizes the fact that a deep groove hole is drilled vertically to obtain a hole with a constant cross-sectional area, and that the drilled hole is filled with a stabilizing liquid, to create a buoyant stabilizing member. This is an extremely excellent idea with practical benefits, as it made it possible to simplify and downsize the machine structure and to excavate deep trenches at great depths.

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

第１図及び第２図はそれぞれ本考案による深溝孔掘削装
置の一実施例の全体的構成を示す正面図及び側面図、第
３図は該実施例の装置の要部を示す側面図、第４図は該
実施例の装置により掘削を行っている状況を示す一部切
断側面図、第５図は第４図のＡ−Ａ断面図、第６図は第
４図のＢ−Ｂ断面図、第７図は第６図の中心部の拡大図
、第８図ａ ” ｃは該実施例の装置の使用状況を示す
説明図である。 第９図は本考案の他の実施例により掘削を行っている状
態を示す一部切断側面図、第１０図は第９図のＣ−Ｃ断
面図、第１１図ないし第１４図は第９図の変形例を示す
一部切断側面図である。 第１５図は変形例を示す側面図、第１６図は第１５図の
装置により掘削を行っている。 状況を示す一部切断側面図、第１７図は第１６図のＤ−
り断面図、第１８図ａ”ｄは第１５図の装置の使用状況
を示す説明図である。 図中１・・・・・・クレーン、２・・・・・・油圧グラ
ブ、６・・・・・・固定垂直案内部材、８・・・・・・
移動垂直案内部材、８ｂ・・・・・・ストッパー、１０
−−−−−−ワイヤロープ、１３・・・・・・浮力式安
定部材 １５・・・・・・深溝孔。1 and 2 are a front view and a side view, respectively, showing the overall configuration of an embodiment of a deep trench drilling device according to the present invention, and FIG. 3 is a side view and a side view showing essential parts of the device of the embodiment, Fig. 4 is a partially cutaway side view showing the situation in which excavation is performed by the apparatus of this embodiment, Fig. 5 is a cross-sectional view taken along line A-A in Fig. 4, and Fig. 6 is a cross-sectional view taken along line B-B in Fig. 4. , FIG. 7 is an enlarged view of the central part of FIG. 6, and FIGS. 8a to 8c are explanatory diagrams showing the usage status of the apparatus of this embodiment. FIG. 9 is an enlarged view of the central part of FIG. FIG. 10 is a cross-sectional view taken along the line CC in FIG. 9, and FIGS. 11 to 14 are partially cut-away side views showing modifications of FIG. 9. Fig. 15 is a side view showing a modified example, and Fig. 16 shows excavation being carried out by the equipment shown in Fig. 15. Fig. 17 is a partially cutaway side view showing the situation, and Fig. 17 is D- in Fig. 16.
18a" and 18d are explanatory diagrams showing the usage status of the apparatus shown in FIG. 15. In the figure, 1...crane, 2...hydraulic grab, 6... ...Fixed vertical guide member, 8...
Moving vertical guide member, 8b... Stopper, 10
--------Wire rope, 13... Buoyancy type stabilizing member 15... Deep groove hole.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 地中に所要の厚さと深さをもった深溝孔を、該孔に安定
液を満たして掘削する深溝孔掘削装置において、ブーム
付クレーンで垂直に懸吊される長尺角筒状の固定垂直案
内部材と、該固定垂直案内部材内に摺動自在にかつ下方
より挿脱自在に嵌合され、下端に深溝孔掘削用油圧グラ
フを取付けた長尺の移動垂直案内部材と、前記固定垂直
案内部材内を通して前記移動垂直案内部材に止着される
該移動垂直案内部材の上下動用ワイヤーロープと、該移
動垂直案内部材に上下動自在に取付けられ、掘削される
深溝孔内に嵌まりながら垂直移動可能な外形形状を有す
る浮力式安定部材と、該浮力式安定部材の前記移動垂直
案内部材に対する上下動範囲を該移動垂直案内部材の上
端近傍に於ける上限位置と該移動垂直案内部材の下端近
傍に於ける下限位置との間に規定するストッパー機構と
を備え、前記固定垂直案内部材又は前記浮力式安定部材
により前記移動垂直案内部材を案内しながら深溝孔を掘
削することを特徴とする深溝孔掘削装置。In a deep trench drilling device that excavates a deep trench hole of the required thickness and depth underground by filling the hole with a stabilizing liquid, a long, rectangular, cylindrical fixed vertical shaft is suspended vertically by a boom-equipped crane. a guide member, an elongated movable vertical guide member that is slidably fitted into the fixed vertical guide member and can be inserted and removed from below, and has a hydraulic graph for deep trench drilling attached to its lower end; and the fixed vertical guide. A wire rope for vertical movement of the movable vertical guide member is fixed to the movable vertical guide member through the inside of the member, and a wire rope is attached to the movable vertical guide member so as to be vertically movable, and is vertically moved while fitting into the deep groove hole to be excavated. a buoyant stabilizing member having a possible external shape; and a buoyant stabilizing member having a vertical movement range with respect to the movable vertical guide member between an upper limit position near the upper end of the movable vertical guide member and a lower end position of the movable vertical guide member. a stopper mechanism defined between the movable vertical guide member and the lower limit position of the movable vertical guide member, and the deep groove hole is excavated while the movable vertical guide member is guided by the fixed vertical guide member or the buoyant type stabilizing member. drilling rig.