JP2001032664A - Drilling device - Google Patents
Drilling deviceInfo
- Publication number
- JP2001032664A JP2001032664A JP11208890A JP20889099A JP2001032664A JP 2001032664 A JP2001032664 A JP 2001032664A JP 11208890 A JP11208890 A JP 11208890A JP 20889099 A JP20889099 A JP 20889099A JP 2001032664 A JP2001032664 A JP 2001032664A
- Authority
- JP
- Japan
- Prior art keywords
- guide member
- bit
- pipe
- drilling
- tip
- 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
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、軟弱地盤に鋼管を
打ち込むことによって、トンネルの切羽の安定および坑
口の補強等、地盤を改良するためや、ＮＡＴＭ工法等に
よるトンネル掘削にあたり、掘削後の地山中に補強用の
鋼管を打ち込むため等に使用されるさく孔装置に関す
る。BACKGROUND OF THE INVENTION The present invention relates to improving the ground by driving a steel pipe into soft ground to stabilize the face of the tunnel and reinforcing the pit, and to excavate the tunnel by the NATM method or the like. The present invention relates to a drilling device used for driving a reinforcing steel pipe into a mountain.
【０００２】[0002]
【従来の技術】トンネルの掘削前に切羽を安定させるた
め、予め鋼管挿入用の孔を穿孔し、しかる後、その孔に
定着剤を注入し、その後鋼管を別途挿入していた。この
方法は、さく孔と定着剤の注入及び鋼管の挿入を別に行
うので、作業効率が悪く、しかもさく孔時又はさく孔後
すぐに孔の内壁が崩落して、定着剤の注入又は棒鋼の挿
入が困難になることがある等の問題点があった。2. Description of the Related Art In order to stabilize a face before excavation of a tunnel, a hole for inserting a steel pipe was previously drilled, and thereafter, a fixing agent was injected into the hole, and then a steel pipe was separately inserted. In this method, since the drilling and the injection of the fixing agent and the insertion of the steel pipe are performed separately, the working efficiency is poor, and the inner wall of the hole collapses at the time of the drilling or immediately after the drilling, so that the fixing agent is injected or the steel bar is inserted. There are problems such as difficulty in insertion.
【０００３】これを解決するため、図１２に示すよう
に、さく孔部の先端部に設けられている先行ビット５４
と、該先行ビットより後方位置に設けられている拡縮可
能な複数のウイングビット５５，…とを備え、さく孔時
には上記ウイングビットを外方に張出させて、さく孔を
行なうと同時に、さく孔ロッド５７の外周部に装着した
鋼管５３を地山中に挿入し、さく孔終了後はウイングビ
ットを縮径して小径化し、鋼管５３だけを残してさく孔
ロッド５７を引き抜くことにより、さく孔と鋼管の挿入
を同時に行うことのできるさく孔装置が開発されている
（特公平７−１１３３１５号）。このさく孔装置は、複
数（例えば４個）のウイングビットが軸心に対し所定の
間隔で放射状に配置されており、その後端部を基点とし
て内外に回動することにより拡縮するようになってい
る。In order to solve this problem, as shown in FIG. 12, a leading bit 54 provided at the tip of a drill hole is provided.
And a plurality of scalable wing bits 55,... Provided at a position rearward of the preceding bit, and when drilling, the wing bits are extended outward to perform drilling and drilling simultaneously. The steel pipe 53 attached to the outer periphery of the hole rod 57 is inserted into the ground, and after the drilling is completed, the diameter of the wing bit is reduced to reduce the diameter. A drilling device capable of simultaneously inserting steel and a steel pipe has been developed (Japanese Patent Publication No. Hei 7-113315). In this drilling device, a plurality of (for example, four) wing bits are radially arranged at predetermined intervals with respect to an axis, and are expanded and contracted by rotating inward and outward with a rear end as a base point. I have.
【０００４】[0004]
【発明が解決しようとする課題】上記従来のさく孔装置
は、鋼管埋設後に先行ビットも回収できるので経済的で
はあるが、ウイングビットが拡縮するので構造的に複雑
となり、その分だけ損傷事故が生じやすいという問題点
があった。また、ウイングビットが内外に回動して拡縮
するため、拡径部とパイプ先端との間に一定の間隔
（Ｄ）が設けられているが、崩落性の激しい地盤では、
その間隔部に大径の礫が崩落し、パイプとビットの間隙
を蓋して、繰粉の排出を阻害する場合があった。さら
に、ウイングビットは拡張するので、大きい礫が存在す
ると回転抵抗が過大となり、さく孔に支障をきたすおそ
れがあった。そこで、本発明は、上記のような拡縮構造
を採用する代わりに、鋼管埋設後にビットも地中に残し
てロッドを引き上げる工法を採用することとし、より堅
牢で事故の生じにくいさく孔装置を提供することを課題
としている。The above-mentioned conventional drilling device is economical because the leading bit can be recovered after the steel pipe is buried. However, since the wing bit expands and contracts, it is structurally complicated, and the damage accident is reduced accordingly. There was a problem that it was easy to occur. In addition, since the wing bit rotates inward and outward to expand and contract, a certain distance (D) is provided between the enlarged diameter portion and the pipe tip.
Large-diameter gravels collapsed in the gaps, blocking the gap between the pipe and the bit, which sometimes hindered the discharge of milled powder. Furthermore, since the wing bit expands, the presence of large gravels results in excessive rotation resistance, which may interfere with drilling. Therefore, the present invention adopts a construction method in which the bit is left in the ground after the steel pipe is buried and the rod is pulled up, instead of employing the expansion and contraction structure as described above, and a more robust and less accident-prone drilling device is provided. The challenge is to do.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明は次のような構成とした。すなわち、本発明
にかかるさく孔装置は、さく孔ロッドの先端部に取り付
けられる筒状のガイド部材と、当該ガイド部材が嵌合す
る中空部によって前記ガイド部材に嵌着される先端ビッ
トとを備え、当該先端ビットとガイド部材との嵌合部に
は、両者を嵌合した状態で所定方向に相対回転させるこ
とにより互いに係合して両者を離脱不能に結合し、逆方
向に相対回転させることにより互いの係合が解かれて両
者が離脱可能となる凸部と凹部とが設けられていること
を特徴としている。In order to solve the above problems, the present invention has the following arrangement. That is, a drilling device according to the present invention includes a cylindrical guide member attached to a distal end portion of a drilling rod, and a distal end bit fitted to the guide member by a hollow portion into which the guide member fits. In the fitting portion between the tip bit and the guide member, the two are engaged with each other by rotating relative to each other in a predetermined direction in a state where they are fitted, and the two are irremovably coupled to each other, and are relatively rotated in opposite directions. Thus, a convex portion and a concave portion which are disengaged from each other and can be separated from each other are provided.
【０００６】前記先端ビットとしては、外周部が円形の
大径部と、該大径部の中心部から前向きに突出する小径
部とを有する２段形状に形成され、前記大径部の前面に
繰粉排出用の穴が設けられているビットを使用するのが
好ましい。The tip bit is formed in a two-stage shape having a large-diameter portion having a circular outer periphery and a small-diameter portion projecting forward from the center of the large-diameter portion. It is preferable to use a bit provided with a hole for discharging the dust.
【０００７】このさく孔装置の使用に際しては、さく岩
機に連結されたさく孔ロッドの先端部にガイド部材を取
り付け、その先端部にビットを取り付けると共に、ガイ
ド部材の外周部に鋼管等の埋設用パイプを嵌合して、さ
く孔とパイプの埋め込みを同時に行う。ガイド部材に対
するビットの取り付けは、一方に設けた中空部に他方の
嵌合部を挿入し、両者を所定の方向に相対回転させるこ
とにより、両者を離脱不能に結合する。この状態でさく
孔を行い、所定深さのさく孔とパイプの埋設が終了した
ら、さく孔ロッドを前記係合時の回転方向と逆方向に回
転させる。するとビットとガイド部材とが離脱可能とな
るので、さく孔ロッドをガイド部材共々後向きに引き抜
く。これにより、地中にビットとパイプが残留させられ
る。When using this drilling device, a guide member is attached to the tip of a drill rod connected to a rock drill, a bit is attached to the tip, and a steel pipe or the like is embedded in the outer periphery of the guide member. The pipe is fitted and the drilling and the pipe are buried at the same time. To attach the bit to the guide member, the other fitting portion is inserted into the hollow portion provided on one side, and the two are relatively rotated in a predetermined direction, so that the two can not be detached from each other. Drilling is performed in this state, and when the drilling of the predetermined depth and the pipe are completed, the drilling rod is rotated in a direction opposite to the rotation direction at the time of the engagement. Then, the bit and the guide member can be detached, so that the drill rod is pulled out together with the guide member backward. This leaves bits and pipes underground.
【０００８】[0008]
【発明の実施の形態】以下、図１乃至図１１にあらわさ
れた実施の形態について説明する。このさく孔装置１
は、さく孔ロッド２にネジで装着されるガイド部材３を
備え、このガイド部材３の先端部に先端ビット５が取り
付けられている。ガイド部材３は、中空筒体として形成
され、その外周部には、等間隔で断面扇型の３個の凸部
７，…が並設されている。凸部７は、前後方向中央部よ
りも若干後よりの部分が最も高いパイプ押圧用凸部８と
なっており、その前端面８ａは傾斜面として形成されて
いる。前記パイプ押圧部８よりも前側の部分は、ガイド
部材３の前端部に達する凸条部９となっている。この凸
条部９の前後方向中間部には、一方の側面に開口する所
定長さの係合凹部１０が設けられている。なお、パイプ
押圧用凸部８よりも後側の部分は、ガイド部材３の後端
部に達する補強部１１となっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in FIGS. 1 to 11 will be described below. This drilling device 1
The guide member 3 includes a guide member 3 attached to the drill rod 2 with screws, and a tip bit 5 is attached to a tip portion of the guide member 3. The guide member 3 is formed as a hollow cylindrical body, and three convex portions 7,... The convex portion 7 is the highest pipe pressing convex portion 8 at a portion slightly behind the central portion in the front-rear direction, and its front end surface 8a is formed as an inclined surface. A portion on the front side of the pipe pressing portion 8 is a ridge 9 reaching the front end of the guide member 3. At a middle portion in the front-rear direction of the protruding ridge portion 9, an engaging concave portion 10 having a predetermined length opened on one side surface is provided. In addition, a portion on the rear side of the pipe pressing convex portion 8 is a reinforcing portion 11 reaching the rear end portion of the guide member 3.
【０００９】ガイド部材３の中空部は、中間部から後側
の部分がロッド装着用のネジ穴部１３となっており、そ
れよりも前側の部分は当該ネジ穴部１３からガイド部材
の前端開口部１４ａに連通するフラッシングホール１４
となっている。The hollow portion of the guide member 3 has a threaded hole 13 for mounting a rod at a portion from the middle to the rear, and a portion at the front of the hollowed portion from the screwed hole 13 to the front end opening of the guide member. Flushing hole 14 communicating with portion 14a
It has become.
【００１０】前記ビット５は、後方に開口する中空部２
１を有するリング状の胴部２０と、該胴部の前側に一体
に設けられた大径部２２と、該大径部の中心部から前方
に突出する小径部２３とを備えた２段形状に形成され、
該小径部の前端部に超硬合金チップで作られた３個の硬
質刃体２５，…が放射状に植設されている。これら硬質
刃体の間隔部には、溝２７，…が放射状に設けられてい
て、各溝２７はビット内部に連通するフラッシングホー
ル２８の開口部に連通している。また、前記大径部の２
２の前面は軸心に対しほぼ垂直な平面として形成され、
この面にも同様な硬質刃体２６，…が等間隔で植設され
ている。さらに、これら硬質刃体２６，…の間隔部に
は、繰粉を後方へ排出するための長穴状の排出穴３０，
…（図示例では３個）が穿設されている。The bit 5 has a hollow portion 2 opening rearward.
1. A two-stage shape including a ring-shaped body portion 20 having a large diameter portion 1, a large-diameter portion 22 integrally provided on the front side of the body portion, and a small-diameter portion 23 protruding forward from the center of the large-diameter portion. Formed in
Three hard blades 25,... Made of cemented carbide tips are radially implanted at the front end of the small diameter portion. Grooves 27,... Are radially provided in the space between the hard blades, and each groove 27 communicates with an opening of a flushing hole 28 communicating with the inside of the bit. Also, the large diameter portion 2
2 is formed as a plane substantially perpendicular to the axis,
On this surface, similar hard blades 26 are implanted at equal intervals. Further, in the space between the hard blades 26,...
... (three in the illustrated example).
【００１１】先端ビット５の中空部２１の後端部には、
内側に突出する３個の係合凸部３５，…が設けられてい
る。この係合凸部３５は、前記ガイド部材３を当該係合
凸部に対し所定方向（さく孔時における回転方向）に相
対回転させたときに該ガイド部材の係合凹部１０に嵌り
込んで係合するもので、その係合状態ではガイド部材３
とビット５とが互いに離脱不能に結合した状態となる。
ガイド部材３とビット５とを相対的に逆回転させれば両
者の係合が解かれて、両者を分離することができるよう
になる。At the rear end of the hollow portion 21 of the tip bit 5,
Three engaging projections 35 projecting inward are provided. When the guide member 3 is relatively rotated with respect to the engagement protrusion in a predetermined direction (rotation direction at the time of drilling), the engagement protrusion 35 is fitted into the engagement recess 10 of the guide member. In the engaged state, the guide member 3
And the bit 5 are irremovably coupled to each other.
If the guide member 3 and the bit 5 are relatively reversely rotated, the engagement between the two is released, and the two can be separated.
【００１２】このさく孔装置１は、さく岩機に連結した
さく孔ロッド２の先端部にガイド部材３を螺着し、その
先端部に先端ビット５を取り付けて使用される。さく孔
ロッド２は１本のみを使用する場合と、複数のさく孔ロ
ッドを直列につなぎ合わせて使用する場合がある。使用
に際しては、さく孔ロッド２を埋設用のパイプＰ内に挿
通し、先端部にはパイプリーダー４０を螺着しておく。
パイプリーダー４０は、円筒状であり、図９に示すよう
に、後部はパイプＰに螺着するためのネジ穴部４１とな
っており、前端部には内側に突出する環状の突出部４２
が設けられている。また、パイプリーダー４０の前側外
周部には、段部４３ａ付きの小径部４３が形成されてい
る。場合によっては、このパイプリーダー４０をパイプ
Ｐと一体に形成しておくこともできる。The drilling apparatus 1 is used by screwing a guide member 3 to a tip end of a drilling rod 2 connected to a rock drill, and attaching a tip bit 5 to the tip end. There is a case where only one drilling rod 2 is used and a case where a plurality of drilling rods are connected in series. In use, the drill rod 2 is inserted into the burying pipe P, and a pipe leader 40 is screwed to the tip.
The pipe leader 40 has a cylindrical shape, and as shown in FIG. 9, has a screw hole 41 for screwing into the pipe P at the rear, and an annular protrusion 42 protruding inward at the front end.
Is provided. A small-diameter portion 43 with a step 43a is formed on the outer peripheral portion on the front side of the pipe leader 40. In some cases, the pipe leader 40 may be formed integrally with the pipe P.
【００１３】さく孔ロッド２をパイプＰに完全に挿入し
た状態では、ガイド部材３のパイプ押圧部８の傾斜前面
８ａがパイプリーダー４０の突出部４２の傾斜段部４２
ａに当接する。ガイド部材３に対する前記先端ビット５
の取り付けに際しては、当該先端ビット５の係合凸部３
５がガイド部材の凸部７，…の間隔部に位置する角度
で、ガイド部材３をビット５の中空部２１に嵌合し、し
かる後、ガイド部材３（ロッド２に装着）とビット５を
所定方向に相対回転させて、前記係合凸部３５をガイド
部材３の係合凹部１０に係合させる。これにより、ビッ
ト５がガイド部材３から離脱しなくなる。この係合時の
ガイド部材の回転方向は、さく孔時における回転方向と
同じ方向である。When the drill rod 2 is completely inserted into the pipe P, the inclined front surface 8a of the pipe pressing portion 8 of the guide member 3 is formed by the inclined step portion 42 of the projecting portion 42 of the pipe leader 40.
a. The tip bit 5 for the guide member 3
At the time of attachment, the engaging projection 3 of the tip bit 5 is used.
The guide member 3 is fitted into the hollow portion 21 of the bit 5 at an angle at which 5 is located at the interval between the convex portions 7,... Of the guide member, and thereafter, the guide member 3 (attached to the rod 2) and the bit 5 are connected. The engagement protrusion 35 is engaged with the engagement recess 10 of the guide member 3 by relative rotation in a predetermined direction. As a result, the bit 5 does not come off the guide member 3. The direction of rotation of the guide member during this engagement is the same as the direction of rotation during drilling.
【００１４】上記組み立て状態では、ガイド部材に取り
付けた先端ビット５とパイプに取り付けたパイプリーダ
ー４０との間に隙間ｄができるので、この隙間を覆うた
め、環状のパイプカバー４５が嵌め込まれる。パイプカ
バー４５の後端部は、パイプリーダー４０の外周部に設
けられている段部４３ａに当接して支持される。In the above assembled state, a gap d is formed between the tip bit 5 attached to the guide member and the pipe leader 40 attached to the pipe, and an annular pipe cover 45 is fitted to cover the gap. The rear end of the pipe cover 45 is supported in contact with a stepped portion 43 a provided on the outer peripheral portion of the pipe leader 40.
【００１５】図１１は、このさく孔装置１の使用法の説
明図であって、さく孔ロッド２をさく岩機Ｄのシャンク
ロッドＳにジョイントＪで接続し、該ジョイントの前部
にパイプＰを嵌合する。さく孔ロッド２の先端部にはガ
イド部材３を取り付け、該ガイドロッドに先端ビット５
を取り付ける。なお、パイプＰの先端部にはパイプリー
ダー４０を取り付け、当該パイプリーダー４０と先端ビ
ットとの隙間部はパイプカバー４５で覆った状態として
おく。さく孔中の先端ビット５には、打撃力と回転力と
推力がロッド２を介して加えられる。また、パイプＰに
はガイド部材３のパイプ押圧用凸部８とパイプリーダー
４０の内向き突出部４２との当接を介して該パイプを前
向きに引張る力が作用するので、パイプは無理なくさく
孔された孔内に引き込まれる。FIG. 11 is a diagram for explaining the use of the drilling device 1. The drilling rod 2 is connected to a shank rod S of a rock drill D by a joint J, and a pipe P is connected to the front of the joint. Is fitted. A guide member 3 is attached to the tip of the drill rod 2 and a tip bit 5 is attached to the guide rod.
Attach. A pipe leader 40 is attached to the tip of the pipe P, and a gap between the pipe leader 40 and the tip bit is covered with a pipe cover 45. A striking force, a rotational force, and a thrust are applied to the tip bit 5 in the drill hole via the rod 2. Further, a force for pulling the pipe P forward through the contact between the pipe pressing projection 8 of the guide member 3 and the inward projection 42 of the pipe leader 40 acts on the pipe P. It is drawn into the drilled hole.
【００１６】さく孔中は、ロッド２の芯部に設けられて
いる水孔を通して水、空気等の冷却流体が供給され、ビ
ット５のフラッシングホール開口部から吐出される。ま
た、ビットの硬質刃体によって粉砕された繰粉は、上記
水、空気等の流れにしたがって、排出穴３０からビット
５の中空部２１内部に入り込み、パイプＰとロッド２と
の隙間を通って後方へ排出される。In the drilling hole, a cooling fluid such as water or air is supplied through a water hole provided in the core of the rod 2, and is discharged from a flushing hole opening of the bit 5. In addition, the fine powder pulverized by the hard blade of the bit enters the hollow portion 21 of the bit 5 from the discharge hole 30 according to the flow of water, air, or the like, and passes through the gap between the pipe P and the rod 2. It is discharged backward.
【００１７】この先端ビット５は、大径部２２と小径部
２３の二段構造となっており、小径部２３が前向きに突
出しているので、当該小径部によって、まず小径の孔が
穿孔される。このため、穴の位置決めが容易である。ま
た、大径部（図示例では小径部も）の外周部が円形であ
り、従来のウイングビットのように凹凸が少ないので、
さく孔中に受ける回転抵抗が少なく、しかもビットの外
周部に岩石等が詰まりにくい。The tip bit 5 has a two-stage structure of a large-diameter portion 22 and a small-diameter portion 23. Since the small-diameter portion 23 projects forward, a small-diameter hole is first drilled by the small-diameter portion. . Therefore, positioning of the holes is easy. In addition, since the outer periphery of the large diameter portion (and the small diameter portion in the illustrated example) is circular and has less irregularities like a conventional wing bit,
The rotation resistance received in the drilling hole is small, and rocks and the like are hardly clogged on the outer peripheral portion of the bit.
【００１８】所定深さのさく孔が行われ、パイプＰが所
望の深さまで地中に埋設されると、さく孔を停止し、ロ
ッド２を逆転させつつ若干後退させる。これにより、ビ
ット５の係合凸部がガイド部材３の係合凹部１０から外
れ、ガイド部材３とビット５の結合が切り離される。こ
のため、ビット５とパイプリーダー４０とはパイプＰと
ともにさく孔された孔底に残留させられる。ビット５か
ら切り離されたガイド部材３とロッド２はそのまま後退
させてパイプから抜き取られる。When a drilling hole having a predetermined depth is formed and the pipe P is buried in the ground to a desired depth, the drilling hole is stopped and the rod 2 is slightly retracted while being reversed. As a result, the engagement projection of the bit 5 is disengaged from the engagement recess 10 of the guide member 3, and the connection between the guide member 3 and the bit 5 is cut off. For this reason, the bit 5 and the pipe leader 40 are left at the bottom of the drilled hole together with the pipe P. The guide member 3 and the rod 2 separated from the bit 5 are retracted and pulled out of the pipe.
【００１９】１本孔のさく孔とパイプ埋設を終えたら、
当該孔から抜き取ったロッド２に新たなパイプＰを嵌合
し、パイプリーダー４０を取り付けるとともに、ガイド
部材３の先端部に新たなビット５を取り付けて、引き続
き新たなさく孔とパイプ埋設を行うことができる。After finishing the drilling of one hole and burying the pipe,
A new pipe P is fitted to the rod 2 extracted from the hole, a pipe leader 40 is attached, and a new bit 5 is attached to the tip of the guide member 3 to continuously bury a new drill hole and pipe. Can be.
【００２０】このさく孔装置１は、さく孔とパイプ埋設
後に該パイプ内を通して回収することのできる拡縮ビッ
トを用いる代わりに、さく孔後は当該さく孔された孔内
に残留させるビットを使用するので、ビットの構造を簡
単で堅牢なものとすることができる。このビット自体の
コストはそれほど大きくないので、従来の拡縮ビットを
使用するよりも経済的であり、トラブルも生じにくい。The drilling device 1 uses a bit that remains in the drilled hole after drilling, instead of using a scaled bit that can be recovered through the pipe after the drilling and pipe burial. Therefore, the structure of the bit can be made simple and robust. Since the cost of the bit itself is not so large, it is more economical than using the conventional scaled bit, and is less likely to cause trouble.
【００２１】[0021]
【発明の効果】以上に説明したように、本発明にかかる
さく孔装置は、ビットをさく孔ロッドに取り付けるに際
し、ロッドの先端部に装着したガイド部材と当該ビット
とを相対回転させることにより互いに着脱可能に係合さ
せる機構によって両者を結合し、さく孔を行うもので、
所定深さにさく孔した後は、ロッドを逆回転させて後退
させることによりビットからガイド部材を簡単に取り外
すことができる。このため、さく孔後にビットを残して
ガイド部材とロッドとをパイプの内部を通して回収する
ことができるので、ビットとして簡単な構造の堅牢なも
のを採用できるようになり、能率よく、経済的にパイプ
の埋設を行うことが可能となった。As described above, the drilling device according to the present invention, when attaching a bit to a drilling rod, rotates the guide member attached to the tip of the rod and the bit relative to each other. Both are connected by a mechanism that detachably engages, and drilling is performed,
After drilling to a predetermined depth, the guide member can be easily removed from the bit by reversing the rod by rotating it in the reverse direction. For this reason, since the guide member and the rod can be collected through the inside of the pipe while leaving the bit after drilling, a rigid bit having a simple structure can be adopted as the bit, and the pipe can be efficiently and economically manufactured. Can be buried.
【図１】本発明のさく孔装置の１例を表す側面図であ
り、上半分は断面図、下半分は外観図である。FIG. 1 is a side view showing an example of a drilling device according to the present invention, in which an upper half is a sectional view and a lower half is an external view.
【図２】ガイド部材の側面図であり、上半分は縦断面
図、下半分は外観図である。FIG. 2 is a side view of a guide member, wherein an upper half is a longitudinal sectional view and a lower half is an external view.
【図３】ガイド部材の上記と異なる断面図である。FIG. 3 is a cross-sectional view of the guide member, which is different from the above.
【図４】ビットの半分を断面で表した側面図である。FIG. 4 is a side view showing a half of a bit in a cross section.
【図５】ビットの正面図である。FIG. 5 is a front view of a bit.
【図６】ビットの上記と異なる位置における断面図であ
る。FIG. 6 is a sectional view of a bit at a different position from the above.
【図７】ビットの一部を断面で表した正面図である。FIG. 7 is a front view showing a part of a bit in a cross section.
【図８】ビットとガイド部材との係合関係を表す正面図
である。FIG. 8 is a front view illustrating an engagement relationship between a bit and a guide member.
【図９】パイプリーダーの側面図であり上半分は縦断面
図、下半分は外観図である。FIG. 9 is a side view of the pipe leader, in which the upper half is a longitudinal sectional view and the lower half is an external view.
【図１０】パイプカバーの側面図であり、中心線から上
は断面を表す。FIG. 10 is a side view of the pipe cover, and shows a cross section from above the center line.
【図１１】使用法の説明図である。FIG. 11 is an explanatory diagram of a method of use.
【図１２】従来のさく孔装置の説明図である。FIG. 12 is an explanatory view of a conventional drilling device.
１ さく孔装置 ２ さく孔ロッド ３ ガイド部材 ５ 先端ビット １０ 係合凹部 ２０ 胴部 ３５ 係合凸部 ４０ パイプリーダー ４５ パイプカバー DESCRIPTION OF SYMBOLS 1 Drilling apparatus 2 Drilling rod 3 Guide member 5 Tip bit 10 Engagement concave part 20 Body part 35 Engagement convex part 40 Pipe leader 45 Pipe cover
Claims (3)
筒状のガイド部材と、当該ガイド部材が嵌合する中空部
によって前記ガイド部材に嵌着される先端ビットとを備
え、当該先端ビットとガイド部材との嵌合部には、両者
を嵌合した状態で所定方向に相対回転させることにより
互いに係合して両者を離脱不能に結合し、逆方向に相対
回転させることにより互いの係合が解かれて両者が離脱
可能となる凸部と凹部とが設けられていることを特徴と
するさく孔装置。A cylindrical guide member attached to the distal end of the drilling rod; and a distal bit fitted to the guide member by a hollow portion into which the guide member fits. In the fitting portion with the member, the two are engaged with each other by rotating relative to each other in a predetermined direction in a state in which they are fitted, and the two are irremovably coupled to each other by rotating in the opposite direction to engage with each other. A drilling device provided with a convex portion and a concave portion which can be separated and released from each other.
と、該大径部の中心部から前向きに突出する小径部とを
有する２段形状に形成され、前記大径部の前面に繰粉排
出用の穴が設けられている請求項１に記載のさく孔装
置。2. The tip bit is formed in a two-stage shape having a large-diameter portion having a circular outer peripheral portion and a small-diameter portion protruding forward from a center portion of the large-diameter portion. The drilling device according to claim 1, further comprising a hole for discharging the dust.
に設けた内向き突出部に当接してさく孔ロッドの推力を
パイプに伝達し、当該パイプを前進させるパイプ押圧用
凸部が設けられている請求項１に記載のさく孔装置。3. An outer peripheral portion of the guide member is provided with a pipe pressing convex portion for transmitting a thrust of a drill rod to an inwardly protruding portion provided at a distal end portion of the pipe, transmitting the thrust of the drill rod to the pipe, and advancing the pipe. The drilling device according to claim 1, wherein the drilling device is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20889099A JP3726179B2 (en) | 1999-07-23 | 1999-07-23 | Drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20889099A JP3726179B2 (en) | 1999-07-23 | 1999-07-23 | Drilling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001032664A true JP2001032664A (en) | 2001-02-06 |
| JP3726179B2 JP3726179B2 (en) | 2005-12-14 |
Family
ID=16563830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20889099A Expired - Fee Related JP3726179B2 (en) | 1999-07-23 | 1999-07-23 | Drilling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3726179B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007277979A (en) * | 2006-04-10 | 2007-10-25 | Tokyo Seiko Co Ltd | Anchor for suspension structure on slope |
| JP2008115611A (en) * | 2006-11-06 | 2008-05-22 | Alloy Kogyo Kk | Drill tool |
| EP2189617A1 (en) * | 2007-09-11 | 2010-05-26 | Mitsubishi Materials Corporation | Digging tool, digging bit, and device |
| JP2017203332A (en) * | 2016-05-13 | 2017-11-16 | 株式会社トライテック | Boring tool and boring method |
| JP7152088B1 (en) * | 2022-05-19 | 2022-10-12 | 東邦金属株式会社 | drill bit, drilling equipment |
-
1999
- 1999-07-23 JP JP20889099A patent/JP3726179B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007277979A (en) * | 2006-04-10 | 2007-10-25 | Tokyo Seiko Co Ltd | Anchor for suspension structure on slope |
| JP2008115611A (en) * | 2006-11-06 | 2008-05-22 | Alloy Kogyo Kk | Drill tool |
| EP2189617A1 (en) * | 2007-09-11 | 2010-05-26 | Mitsubishi Materials Corporation | Digging tool, digging bit, and device |
| EP2189617A4 (en) * | 2007-09-11 | 2013-02-27 | Mitsubishi Materials Corp | Digging tool, digging bit, and device |
| US8550191B2 (en) | 2007-09-11 | 2013-10-08 | Mitsubishi Materials Corporation | Digging tool, digging bit, and device |
| JP2017203332A (en) * | 2016-05-13 | 2017-11-16 | 株式会社トライテック | Boring tool and boring method |
| JP7152088B1 (en) * | 2022-05-19 | 2022-10-12 | 東邦金属株式会社 | drill bit, drilling equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3726179B2 (en) | 2005-12-14 |
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