JP2001032666A - Excavating bit for ground excavating device - Google Patents
Excavating bit for ground excavating deviceInfo
- Publication number
- JP2001032666A JP2001032666A JP21003699A JP21003699A JP2001032666A JP 2001032666 A JP2001032666 A JP 2001032666A JP 21003699 A JP21003699 A JP 21003699A JP 21003699 A JP21003699 A JP 21003699A JP 2001032666 A JP2001032666 A JP 2001032666A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- cutting
- steel pipe
- rotating
- faces
- 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.)
- Pending
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】回動ビットを拡開した削進ビット
の回転とエアーハンマーの打撃の共働による削進と、回
動ビットを縮小して削進ビットを鋼管内に引戻した状態
の鋼管のクラウンビットによる削進及び発進坑内への引
戻し交換補修、及び回動ビットの傾斜面の原点を修正削
進方向に合わせ削進ビットを目的方向へ修正する等の削
進を自在に行って、あらゆる地盤、対象物等の削進、孔
あけ、鋼管埋設等を自在に行えるようにした地盤の削進
装置に使用する、拡縮自在な回動ビットを備えた削進ビ
ットを提供する。[Industrial application] The turning by expanding the turning bit and the cutting by the cooperation of the rotation of the cutting bit and the impact of the air hammer, and the turning bit is reduced and the cutting bit is pulled back into the steel pipe. It is possible to freely perform cutting, such as cutting by a crown bit of a steel pipe, pulling back into the starting pit, replacing and repairing, and adjusting the origin of the inclined surface of the turning bit to the cutting direction and correcting the cutting bit to the target direction. Also, there is provided a cutting bit provided with a scalable rotating bit, which is used in a cutting apparatus for a ground, which is capable of cutting, drilling, burying a steel pipe, and the like in any ground and objects.
【０００２】[0002]
【従来技術の課題】上下水道、ガス、電気電話線、その
他の各種の管を地中に埋設工事する場合、特に、都市市
街地においては地表、道路等を開削せず、また道路交通
を遮断せずに行うことが必要とされており、よって、通
常道路脇等に発進立杭を設け、該坑内に削進装置を設置
して削進埋設を行っている。然して、削進ビットの回転
とエアーハンマーの打撃若しくは振動発生装置による振
動負荷等による削進装置による場合、通常の地盤を削進
するには何ら問題ないが、例えば、軟弱な地盤、岩盤、
砂層、玉石層、それらの互層地盤等や、地盤中に松杭、
コンクリートパイル、ライナープレート、鋼材等の埋設
物があったり、また、既設の人孔（例、マンホール、ヒ
ューム管等）に行き当ったりした場合や、既設管、マン
ホール等に枝管を取付ける場合等には、この破砕方式の
削進装置では対応しにくい面があり、それらに対しては
クラウンビット等による切削削進の方が適していた。2. Description of the Related Art When burying water and sewage, gas, electric telephone lines, and other various pipes underground, especially in an urban area, the ground surface, roads, etc. are not cut and road traffic is cut off. Therefore, the starting pile is usually provided on the side of the road or the like, and a cutting device is installed in the pit to perform the cutting and burying. However, in the case of the cutting device by the rotation of the cutting bit and the impact load of the air hammer or the vibration load by the vibration generating device, there is no problem in cutting the ordinary ground, for example, soft ground, rock,
Sand layers, cobblestone layers, their alternate layers, pine piles in the ground,
When there is a buried object such as a concrete pile, liner plate, or steel material, or when an existing manhole (eg, manhole, fume pipe, etc.) is reached, or when a branch pipe is attached to an existing pipe, manhole, etc. However, there are some aspects which are difficult to cope with this crushing type cutting device, and cutting and cutting with a crown bit or the like is more suitable for them.
【０００３】[0003]
【発明による課題の解決】そこで本発明は、破砕方式に
よる削進手段としての削進ビットの回転手段とエアーハ
ンマーの打撃手段を備える一方、切削方式による削進手
段としてのクラウンビットを取付けた鋼管の回転手段を
備え、両者を目的に応じて使い分けするように備えた削
進装置において、該削進装置に使用する、拡縮自在な回
動ビットを備えた削進ビットを開発して、前述のような
あらゆる地盤、対象物の削進に極めて効率的に対応でき
るようにして従来の課題を解決したものである。SUMMARY OF THE INVENTION Accordingly, the present invention provides a steel pipe having a cutting bit rotating means as a cutting means by a crushing method and a hitting means of an air hammer, while a crown bit as a cutting means by a cutting method is mounted. In the cutting device equipped with the rotating means of the above, so that both can be properly used according to the purpose, a cutting bit having an expandable and contractible rotating bit used for the cutting device has been developed, and the aforementioned cutting bit has been developed. The conventional problems have been solved by making it possible to extremely efficiently cope with the cutting of all types of ground and objects.
【０００４】[0004]
【課題を解決する手段】即ち、本発明は、回転手段で鋼
管内の中心軸線上に備えた排土オーガ、エアーハンマ
ー、削進ビット等を正逆回転自在に回転駆動し、他の回
転手段で前記削進ビットの後端にその先端を回転自在に
連結した鋼管（先頭の鋼管の先端にクラウンビットを取
付けた）を正逆回転自在に回転駆動するように備えた地
盤の削進装置において、That is, according to the present invention, a rotating means drives a discharging earth auger, an air hammer, a cutting bit and the like provided on a central axis line in a steel pipe so as to be rotatable in normal and reverse directions. A ground cutting device provided to rotatably drive a steel pipe (a crown bit is attached to a leading end of a leading steel pipe) whose front end is rotatably connected to the rear end of the cutting bit. ,
【０００５】削進ビットを、その円形正面の中心線上の
中心部に設定間隔をおいた上下対称位置に形成した正面
略方形の凹部内に、正面略方形の１対の回動ビットを、
夫々の平面状の背面、左右側面と各凹部の平面状の背
面、左右側面を密に嵌合すると共に、回動ビットの底面
の軸孔を中心とした円弧状凸面と凹部の底面の軸孔を中
心とした円弧状凹面を密に嵌合し、両者の連通した軸孔
に枢軸を嵌挿して、各回動ビットを枢軸を中心として前
方へ設定角度回動自在に備えたものであり、[0005] A pair of rotary bits having a substantially rectangular front face are formed in a recess having a substantially rectangular front face formed in a vertically symmetrical position with a set interval at a center portion on the center line of the circular front face thereof.
The flat back surface, the left and right side surfaces and the flat back surface and the left and right side surfaces of each recess are closely fitted, and the arc-shaped convex surface centered on the shaft hole on the bottom surface of the rotating bit and the shaft hole on the bottom surface of the recess. The concave concave surface around the center is tightly fitted, a pivot is inserted into a shaft hole communicating with both, and each pivot bit is provided so as to be pivotable forward by a set angle around the pivot,
【０００６】回動ビットを凹部に嵌合した状態即ち拡開
状態でその先端が鋼管の外径より外方にあるようにし
て、削進ビットの回転駆動で鋼管の外径より大径の孔を
削進するように備え、In the state where the turning bit is fitted into the concave portion, that is, in the expanded state, the tip is outside the outer diameter of the steel pipe, and the hole having a diameter larger than the outer diameter of the steel pipe is driven by the rotation of the cutting bit. Preparing to cut down on
【０００７】また、回動ビットを枢軸を中心として前方
へ設定角度回動した状態即ち縮小状態でその先端が鋼管
の内径より内方にあるようにして、削進ビットを鋼管内
に引戻した状態の鋼管のクラウンビットによる削進及び
削進ビットの発進坑内への引戻し交換補修等を自在に行
えるように備えたものである、地盤の削進装置の削進ビ
ットによって課題を解決したものである。In the state where the turning bit is turned forward by a set angle about the pivot axis, that is, in a contracted state, its tip is located inside the inner diameter of the steel pipe, and the cutting bit is pulled back into the steel pipe. The problem has been solved by the cutting bit of the ground cutting device, which is provided so that the cutting bit by the crown bit of the steel pipe and the backing of the cutting bit into the starting pit can be freely exchanged and repaired. .
【０００８】[0008]
【実施例】実施例を説明する。図１〜図５を参照。例え
ば、図５示の地盤の削進装置、即ち、ベース６に回転手
段Ａ、Ｂを各正逆回転自在に備え、回転手段Ａで削進ビ
ット１の後端にその先端を回転自在に連結した鋼管２
（先頭の鋼管の先端にクラウンビット２ａを取付けた）
を回転駆動し、回転手段Ｂで鋼管２内の中心軸線上に備
えた排土オーガ３、エアーハンマー４、及び削進ビット
１を回転駆動し、推進架台５にベース６を推進手段７で
前進後退動するように備えた削進装置であり、削進ビッ
ト１の回転による削進とエアーハンマー４の地盤を粉砕
削進する衝撃力を共働すること、排土オーガ３で排土す
ること、鋼管２の逆回転を上記削進と共働すること等
を、自在に制御して地盤の削進及び鋼管の埋設を行うよ
うにした地盤の削進装置において、An embodiment will be described. See FIGS. For example, the ground cutting device shown in FIG. 5, that is, the base 6 is provided with rotating means A and B rotatably forward and backward, and the rotating means A rotatably connects the tip to the rear end of the cutting bit 1. Steel pipe 2
(The crown bit 2a was attached to the tip of the top steel pipe.)
And the rotating means B rotates the discharging auger 3, the air hammer 4, and the cutting bit 1 provided on the central axis in the steel pipe 2, and the base 6 is advanced to the propulsion base 5 by the propulsion means 7. A cutting device equipped to retreat, cooperating with the cutting by rotation of the cutting bit 1 and the impact force of crushing and cutting the ground of the air hammer 4, and discharging by the discharging auger 3. In the ground cutting device, the reverse rotation of the steel pipe 2 cooperates with the above cutting, and the like, is freely controlled to cut the ground and bury the steel pipe.
【０００９】削進ビット１を、その円形正面の中心線上
の中心部に設定間隔をおいた上下対称位置に形成した正
面略方形の凹部８、８内に、正面略方形の１対の回動ビ
ット１ａ、１ｂを、夫々の平面状の背面９、左右側面１
０、１１と各凹部８、８の平面状の背面９、左右側面１
０、１１を密に嵌合すると共に、回動ビット１ａ、１ｂ
の底面の軸孔を中心とした円弧状凸面１２と凹部８、８
の底面の軸孔を中心とした円弧状凹面１３を密に嵌合
し、両者の連通した軸孔に枢軸１４を嵌挿して、各回動
ビット１ａ、１ｂを枢軸１４を中心として前方へ設定角
度回動自在に備えたものであり、（図１〜図３）[0009] A pair of substantially square frontal rotations are provided in recesses 8, 8 each having a substantially rectangular front face formed at a vertically symmetrical position with a set interval at a center portion on the center line of the circular front face thereof. The bits 1a and 1b are respectively connected to the flat back surface 9 and the left and right side surfaces 1.
0, 11 and the flat back surface 9, left and right side surfaces 1 of each recess 8, 8
0 and 11 are tightly fitted and the rotating bits 1a and 1b
Arc-shaped convex surface 12 and concave portions 8, 8 centered on the shaft hole in the bottom surface of
An arcuate concave surface 13 centered on the shaft hole on the bottom surface of the pair is tightly fitted, a pivot 14 is inserted into a shaft hole communicating with both, and each of the turning bits 1a and 1b is set forward by a predetermined angle around the pivot 14. It is provided rotatably (FIGS. 1 to 3).
【００１０】回動ビット１ａ、１ｂを凹部８、８に嵌合
した状態即ち拡開状態でその先端が鋼管２の外径より外
方にあるようにして、削進ビット１の回転駆動で鋼管２
の外径より大径の掘削孔１５を削進するように備え、
（図１、図２）In a state where the turning bits 1a and 1b are fitted into the recesses 8 and 8, that is, in an expanded state, the ends thereof are located outside the outer diameter of the steel pipe 2. 2
Preparing to drill a borehole 15 larger in diameter than the outer diameter of
(FIGS. 1 and 2)
【００１１】回動ビット１ａ、１ｂを枢軸１４を中心と
して前方へ設定角度回動した状態即ち縮小状態でその先
端が鋼管２の内径より内方にあるようにして、削進ビッ
ト１を鋼管２内に引戻した状態の鋼管２のクラウンビッ
ト２ａによる削進及び削進ビット１の発進坑１６内への
引戻し交換補修等を自在に行えるように備えた、地盤の
削進装置の削進ビットである。（図３）When the turning bits 1a and 1b are turned forward by a set angle about the pivot 14, that is, in a contracted state, the tip is located inside the inner diameter of the steel pipe 2, and the cutting bit 1 is connected to the steel pipe 2. The cutting bit of the ground cutting device provided so that the cutting of the steel pipe 2 pulled back into the inside by the crown bit 2a and the replacement of the cutting bit 1 into the starting pit 16 can be freely performed. is there. (Fig. 3)
【００１２】また、本発明は、削進ビット１の上下の凹
部８、８に回動自在に嵌合設置した上下の回動ビット１
ａ、１ｂにおいて、上の回動ビット１ａの正面の上端を
原点Ｐとして、該原点Ｐから下の回動ビット１ｂの正面
の下端の間の両回動ビット１ａ、１ｂの正面を、後方に
向かって設定角度傾斜した傾斜面１７を形成したもので
あり、削進ビット１の修正方向の中心に回動ビット１ａ
の原点Ｐを合わせ設定角度宛往復して正逆回転すること
により傾斜面１７がその傾斜により修正方向に偏って削
進することによって、または削進ビット１の修正方向の
中心に回動ビット１ａの原点Ｐを合わせエアーハンマー
４の衝撃力で削進ビット１を傾斜面１７の傾斜方向へ向
って削進することによって、削進方向を自在に修正制御
して削進を行うようにしたものである。（図４、図１〜
図３）The present invention also relates to an upper and lower turning bit 1 which is rotatably fitted and installed in upper and lower recesses 8 of the cutting bit 1.
a, 1b, the upper end of the front of the upper turning bit 1a is set as the origin P, and the front of both turning bits 1a, 1b between the origin P and the lower end of the front of the lower turning bit 1b is moved backward. A turning bit 1a is formed at the center of the cutting bit 1 in the correction direction.
The origin P is reciprocated to the set angle and reciprocally rotated to tilt the inclined surface 17 in the correction direction due to the inclination thereof, or to rotate the cutting bit 1 in the center of the correction direction of the cutting bit 1a. The origin P is adjusted and the cutting bit 1 is cut in the direction of inclination of the inclined surface 17 by the impact force of the air hammer 4 so that the cutting direction can be freely modified and controlled to perform cutting. It is. (FIG. 4, FIGS. 1 to 1)
(Fig. 3)
【００１３】[0013]
【作用】「主として岩盤、玉石、礫等の地盤、水面下の
地盤等の悪条件地盤を削進する場合」回転手段Ｂを運転
して排土オーガ３、エアーハンマー４、回動ビット１
ａ、１ｂを拡開した状態（凹部に嵌合した状態）の削進
ビット１を回転すると同時に、回転手段Ａを運転して取
付板１８、鋼管２を逆回転して、上記削進ビット１の回
転で削進すると同時にエアーハンマー４による削進ビッ
ト１の衝撃力によって地盤１９を粉砕して削進し、（２
４はモーター、２５ギヤ） 掘削によって生じた排土を削進ビット１の排土孔２０か
ら鋼管２内に導入し排土オーガ３で後方移送して後端の
鋼管２の後方の排出孔２１から外部へ排出し、同時に鋼
管２の逆回転で排土オーガ３の排土移送作用を助勢し、
また、削進ビット１の前進と共に、その前向き衝撃力を
削進ビット１のフランジからクラウンビット２ａに受け
て先頭の鋼管２を前方牽引してそれに接続した鋼管２と
取付板１８を共に前進する。（図１、図５） また、地盤の条件によって、回動ビット１ａ、１ｂを前
方へ回動して削進ビット１を鋼管２内に引戻したのち、
先頭の鋼管２のクラウンビット２ａの回転で削進を行
う。（図３） そして、上記の削進ビット１の削進、鋼管２の前進に同
調し乍ら更に推進架台５上のベース６を油圧シリンダー
等の推進手段７で加圧推進して、岩盤、玉石等の悪条件
地盤１９を削進して鋼管２を埋設する。（図５）[Effect] "In the case of grounding a ground such as rocks, boulders, gravel, etc., or a ground under bad conditions such as a ground under water", the rotating means B is operated to discharge the auger 3, the air hammer 4, and the turning bit 1.
At the same time as the cutting bit 1 in the state where the cutting bits 1 and 1b are expanded (fitted into the concave portions) is rotated, the rotating means A is operated to rotate the mounting plate 18 and the steel pipe 2 in the reverse direction. At the same time, the ground 19 is ground by the impact force of the cutting bit 1 by the air hammer 4 and the ground 19 is cut.
4 is a motor, 25 gears) The excavated soil generated by the excavation is introduced into the steel pipe 2 from the excavated hole 20 of the cutting bit 1, transferred backward by the auger auger 3, and discharged rearward of the steel pipe 2 at the rear end. To the outside, and at the same time, assisting the soil discharging auger 3 by the reverse rotation of the steel pipe 2,
Further, as the cutting bit 1 advances, the front impact force is received by the crown bit 2a from the flange of the cutting bit 1 and the leading steel pipe 2 is pulled forward to move the steel pipe 2 connected to it and the mounting plate 18 together. . (FIGS. 1, 5) Also, depending on the condition of the ground, after turning the turning bits 1a and 1b forward and pulling the cutting bit 1 back into the steel pipe 2,
Cutting is performed by rotating the crown bit 2a of the leading steel pipe 2. (FIG. 3) The base 6 on the propulsion base 5 is further pressurized and propelled by the propulsion means 7 such as a hydraulic cylinder while synchronizing with the above-described cutting of the cutting bit 1 and the advance of the steel pipe 2, The ground 19, such as a cobblestone, is ground and the steel pipe 2 is buried. (Fig. 5)
【００１４】「削進方向を制御して削進する場合」削進
の途中、中心管内のターゲット２２を外部のトランシッ
ト２３で計測する等の手段で削進方向に誤差を発見した
ときは、回転手段Ｂの運転を停止して、排土オーガ３、
エアーハンマー４、削進ビット１の回転を止め、削進ビ
ット１の修正方向を中心に回動ビット１ａの原点Ｐを合
わせ設定角度宛（例４５°宛）往復して正逆回転するこ
とにより傾斜面１７がその傾斜で修正方向に偏って削進
することによって、またはエアーハンマー４の衝撃力で
削進ビット１の削進を行って削進ビット１の傾斜面１７
の傾斜により傾斜方向へ向って削進することによって削
進方向を修正し、それをターゲット２２とトランシット
２３の計測で確認したのち、回転手段Ｂの運転を再開し
て再び正常の削進を行うようにする。（図１、図５）[When cutting is performed by controlling the cutting direction] During cutting, if an error is found in the cutting direction by means such as measuring the target 22 in the central pipe with an external transit 23, the rotation is performed. The operation of the means B is stopped, and the discharging auger 3,
The rotation of the air hammer 4 and the cutting bit 1 is stopped, and the origin P of the turning bit 1a is adjusted around the correction direction of the cutting bit 1 to reciprocate at a set angle (eg, at 45 °) and reciprocally rotate. The inclined surface 17 is inclined in the correction direction due to its inclination, or the cutting bit 1 is cut by the impact force of the air hammer 4 so that the inclined surface 17 of the cutting bit 1 is cut.
The cutting direction is corrected by cutting in the inclination direction due to the inclination of the target. After confirming the cutting direction by measuring the target 22 and the transit 23, the operation of the rotating means B is resumed and normal cutting is performed again. To do. (FIGS. 1 and 5)
【００１５】「主として軟弱地盤を削進する場合」主と
して軟弱な地盤を削進するとき、エアーハンマー４の作
動を停止し、回転手段Ａにより鋼管２を逆回転すると同
時に、回転手段Ｂにより排土オーガ３、エアーハンマー
４、削進ビット１を正回転し、推進架台５で推進して削
進して鋼管２を埋設するようにする。（図１、図５）"When mainly cutting soft ground" When cutting mainly soft ground, the operation of the air hammer 4 is stopped, the steel pipe 2 is rotated in the reverse direction by the rotating means A, and the soil is removed by the rotating means B. The auger 3, the air hammer 4, and the cutting bit 1 are rotated forward, propelled by the propulsion base 5, and cut to bury the steel pipe 2. (FIGS. 1 and 5)
【００１６】[0016]
【効果】通常の削進は回動ビットを拡開した状態で、削
進ビットの回転とエアーハンマーの打撃で行うことがで
きると共に、この削進手段で不適当な地盤、対象物等を
削進するときには、回動ビットを縮小して鋼管内に引戻
し、先頭の鋼管に取付けたクラウンビットで削進を行う
ことができるので、両削進手段を適宜使い分けることに
よって、あらゆる地盤、対象物等を自在かつ極めて効率
的に削進できる優れた効果がある。[Effect] Normal cutting can be performed by rotating the cutting bit and striking the air hammer with the turning bit expanded, and the cutting means can cut unsuitable ground and objects. When traveling, the rotating bit is reduced and pulled back into the steel pipe, and cutting can be performed with the crown bit attached to the leading steel pipe. There is an excellent effect that the cutting can be freely and extremely efficiently cut.
【００１７】回動ビットは削進ビットを前進すると地盤
との負荷で自動的かつ強制的に拡開して凹部内にその周
面に隙間のない状態に密に嵌合した状態となり、また、
削進ビットを後退引き戻しすると地盤との負荷で自動的
かつ強制的に前方回動して縮小した状態となり、よっ
て、如何なる地盤中にあっても、また回動ビットの周囲
に土砂塵等が付着混在しても強大な強制回動力で強引確
実に拡縮作動することができる。When the turning bit is advanced, the turning bit is automatically and forcibly expanded by the load on the ground, and is brought into a state of being tightly fitted in the concave portion without any gap on its peripheral surface.
When the cutting bit is retracted and retracted, it is automatically and forcibly turned forward and contracted by the load on the ground, so that dust and dirt etc. adhere to the rotating bit even in any ground. Even if they are mixed, the expansion and contraction operation can be forcibly and reliably performed with a strong forced rotation power.
【００１８】削進ビットによる削進時には回動ビットに
対してもビット本体と同じ押圧、回転、衝撃等の強大な
負荷が加わるが、回動ビットは凹部内に密に嵌合されて
その背面、左右側面、及び底面（円弧上凸面）の各面が
全て凹部の各面に密接していて、強大な負荷に対しビッ
ト本体と一体的となって耐久するため、強度的な恐れは
全くない。At the time of cutting by the cutting bit, the turning bit is subjected to the same strong load such as pressing, rotation, impact, etc. as the bit body, but the turning bit is tightly fitted in the concave portion and its back surface. , Right and left side surfaces and the bottom surface (circular upper convex surface) are all in close contact with the concave surfaces, and are integrated with the bit body to withstand a heavy load and are durable. .
【００１９】回動ビットを縮小することによって、削進
ビット等を鋼管内を通して発進坑側に容易に回収できる
ので、削進ビット等の修理、交換等を簡単に行うことが
できる。By reducing the rotation bit, the cutting bit and the like can be easily collected on the starting pit side through the steel pipe, so that repair and replacement of the cutting bit and the like can be easily performed.
【００２０】削進方向に狂いが生じた場合は、削進ビッ
トの修正方向の中心に回動ビットの原点を合わせ設定角
度宛往復して正逆回転することにより傾斜面がその傾斜
により修正方向に偏って削進することによって、または
削進ビットの修正方向の中心に回動ビットの原点を合わ
せエアーハンマーの衝撃力で削進ビットを傾斜面の傾斜
方向へ向って削進することによって、削進方向を自在に
修正制御することができる。If the cutting direction is deviated, the origin of the turning bit is aligned with the center of the correcting direction of the cutting bit, and the reciprocation is performed by reciprocating at a set angle, thereby causing the inclined surface to rotate in the correcting direction due to the inclination. By cutting the cutting bit in the direction of the inclination of the inclined surface with the impact force of the air hammer by aligning the origin of the turning bit with the center of the correction direction of the cutting bit, The cutting direction can be freely modified and controlled.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の実施例削進ビット（回動ビット拡開）
及び先頭の鋼管部分の一部切断正面図。FIG. 1 shows an embodiment of the present invention.
And a partially cut front view of a steel pipe portion at the head.
【図２】図２の右側面図。FIG. 2 is a right side view of FIG. 2;
【図３】図１の回動ビットを前方回動（縮小）して鋼管
内に引戻した状態の図。FIG. 3 is a view showing a state in which the turning bit of FIG. 1 is turned forward (reduced) and pulled back into the steel pipe.
【図４】削進ビットの傾斜面と修正削進方向の説明図。FIG. 4 is an explanatory view of an inclined surface of a cutting bit and a corrected cutting direction.
【図５】本発明削進ビットを使用する地盤の削進装置の
１例の構成概略を示す図。FIG. 5 is a view schematically showing a configuration of an example of a ground cutting device using the cutting bit of the present invention.
Ａ 回転手段 Ｂ 回転手段 Ｃ 中心軸線 Ｐ 原点 θ 設定傾斜角度 １ 削進ビット １ａ 回動ビット １ｂ 回動ビット ２ 鋼管 ２ａ クラウンビット ３ 排土オーガー ４ エアーハンマー ５ 推進架台 ６ ベース ７ 推進手段 ８ 凹部 ９ 背面 １０ 左側面 １１ 右側面 １２ 円弧状凸面 １３ 円弧状凹面 １４ 枢軸 １５ 掘削孔 １６ 発進坑 １７ 傾斜面 １８ 取付板 １９ 地盤 ２０ 排土孔 ２１ 排出孔 ２２ ターゲット ２３ トランシット ２４ モーター ２５ ギヤ Reference Signs List A rotating means B rotating means C central axis P origin θ set inclination angle 1 cutting bit 1a turning bit 1b turning bit 2 steel pipe 2a crown bit 3 earth discharging auger 4 air hammer 5 propulsion pedestal 6 base 7 propulsion means 8 recess 9 Back surface 10 Left side surface 11 Right side surface 12 Arc-shaped convex surface 13 Arc-shaped concave surface 14 Axis 15 Excavation hole 16 Start pit 17 Inclined surface 18 Mounting plate 19 Ground 20 Drainage hole 21 Discharge hole 22 Target 23 Transit 24 Motor 25 Gear
Claims (2)
土オーガ、エアーハンマー、削進ビット等を正逆回転自
在に回転駆動し、他の回転手段で前記削進ビットの後端
にその先端を回転自在に連結した鋼管（先頭の鋼管の先
端にクラウンビットを取付けた）を正逆回転自在に回転
駆動するように備えた地盤の削進装置において、 削進ビットを、その円形正面の中心線上の中心部に設定
間隔をおいた上下対称位置に形成した正面略方形の凹部
内に、正面略方形の１対の回動ビットを、夫々の平面状
の背面、左右側面と各凹部の平面状の背面、左右側面を
密に嵌合すると共に、回動ビットの底面の軸孔を中心と
した円弧状凸面と凹部の底面の軸孔を中心とした円弧状
凹面を密に嵌合し、両者の連通した軸孔に枢軸を嵌挿し
て、各回動ビットを枢軸を中心として前方へ設定角度回
動自在に備えたものであり、 回動ビットを凹部に嵌合した状態即ち拡開状態でその先
端が鋼管の外径より外方にあるようにして、削進ビット
の回転駆動で鋼管の外径より大径の孔を削進するように
備え、また、回動ビットを枢軸を中心として前方へ設定
角度回動した状態即ち縮小状態でその先端が鋼管の内径
より内方にあるようにして、削進ビットを鋼管内に引戻
した状態の鋼管のクラウンビットによる削進及び削進ビ
ットの発進坑内への引戻し交換補修等を自在に行えるよ
うに備えたものである、 地盤の削進装置の削進ビット。1. A rotating means for rotating an earth removal auger, an air hammer, a cutting bit and the like provided on a central axis line in a steel pipe so as to be rotatable forward and backward, and a rear end of the cutting bit by another rotating means. A ground cutting device equipped to rotatably drive a steel pipe having a tip rotatably connected thereto (a crown bit is attached to the tip of a leading steel pipe) in a forward and reverse direction. A pair of substantially square front rotating bits are placed in a substantially rectangular front recess formed at a vertically symmetrical position with a set interval at the center on the center line of the front, and each of the flat rear face, the left and right side faces, The concave back surface and the left and right side surfaces of the recess are closely fitted, and the arc-shaped convex surface centered on the shaft hole on the bottom surface of the rotating bit and the arc-shaped concave surface centered on the shaft hole on the bottom surface of the recess are closely fitted. Then, insert the pivots into the shaft holes communicating with each other and The turning bit is provided so as to be rotatable forward by a predetermined angle around the center of the steel pipe. The drill is provided so that a hole larger in diameter than the outer diameter of the steel pipe is cut by rotating the bit. It is provided so that the cutting bit can be retracted into the steel pipe with the cutting bit pulled back into the steel pipe, and the cutting bit can be cut back by the crown bit and the cutting bit can be pulled back into the starting pit, exchanged, and repaired. There is a cutting bit in the ground cutting device.
設置した上下の回動ビットにおいて、上の回動ビットの
正面の上端を原点として、該原点から下の回動ビットの
正面の下端の間の両回動ビットの正面を、後方に向かっ
て設定角度傾斜して傾斜面を形成したものであり、 削進ビットの修正方向の中心に回動ビットの原点を合わ
せ設定角度宛往復して正逆回転することにより傾斜面が
その傾斜により修正方向に偏って削進することによっ
て、または削進ビットの修正方向の中心に回動ビットの
原点を合わせエアーハンマーの衝撃力で削進ビットを傾
斜面の傾斜方向へ向って削進することによって、削進方
向を自在に修正制御するようにした、請求項１の地盤の
削進装置の削進ビット。2. An upper and lower rotating bit rotatably fitted and installed in upper and lower recesses of a cutting bit, wherein the upper end of the front of the upper rotating bit is defined as an origin, and The front face of the two turning bits between the lower ends of the front faces is inclined at a set angle toward the rear to form an inclined surface.The origin of the turning bit is aligned with the center of the cutting bit correction direction and the set angle. The reciprocating and reciprocating addresses cause the inclined surface to be deflected in the correction direction due to the inclination, or the origin of the turning bit is aligned with the center of the cutting bit in the correction direction and the impact force of the air hammer 2. The cutting bit of the ground cutting device according to claim 1, wherein the cutting bit is cut in the direction of the inclination of the inclined surface so as to freely control the cutting direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21003699A JP2001032666A (en) | 1999-07-26 | 1999-07-26 | Excavating bit for ground excavating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21003699A JP2001032666A (en) | 1999-07-26 | 1999-07-26 | Excavating bit for ground excavating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001032666A true JP2001032666A (en) | 2001-02-06 |
Family
ID=16582755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21003699A Pending JP2001032666A (en) | 1999-07-26 | 1999-07-26 | Excavating bit for ground excavating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001032666A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002276276A (en) * | 2001-03-13 | 2002-09-25 | Tomotake Shigemori | Excavation bit for ground boring device |
| KR100710649B1 (en) | 2005-12-21 | 2007-04-25 | 대원전기 주식회사 | Mechanized construction method for earth wire under-bracing and extendable excavating unit for auger crane |
| JP2007277979A (en) * | 2006-04-10 | 2007-10-25 | Tokyo Seiko Co Ltd | Anchor for suspension structure on slope |
| KR100919628B1 (en) * | 2009-03-23 | 2009-09-30 | 임사인 | If the excavation where the carbide tip is had excavation bit of the excavation system where the expansion and abridgment are possible |
| JP2011102523A (en) * | 2009-11-11 | 2011-05-26 | Tomotake Shigemori | Excavating bit of ground excavating device |
| KR101745376B1 (en) | 2016-05-31 | 2017-06-09 | (주)나다건설 | Dividable hammer bit |
| KR101819008B1 (en) * | 2015-12-15 | 2018-02-28 | (주)나다건설 | Micropile foundation structure and construction method of micropile foundation |
| CN113565441A (en) * | 2021-08-03 | 2021-10-29 | 深圳宏业基岩土科技股份有限公司 | Full casing pipe hole forming construction method with same diameter from top to bottom |
-
1999
- 1999-07-26 JP JP21003699A patent/JP2001032666A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002276276A (en) * | 2001-03-13 | 2002-09-25 | Tomotake Shigemori | Excavation bit for ground boring device |
| JP4626788B2 (en) * | 2001-03-13 | 2011-02-09 | 知勇 重盛 | Cutting bits for pipe boring equipment |
| KR100710649B1 (en) | 2005-12-21 | 2007-04-25 | 대원전기 주식회사 | Mechanized construction method for earth wire under-bracing and extendable excavating unit for auger crane |
| JP2007277979A (en) * | 2006-04-10 | 2007-10-25 | Tokyo Seiko Co Ltd | Anchor for suspension structure on slope |
| KR100919628B1 (en) * | 2009-03-23 | 2009-09-30 | 임사인 | If the excavation where the carbide tip is had excavation bit of the excavation system where the expansion and abridgment are possible |
| JP2011102523A (en) * | 2009-11-11 | 2011-05-26 | Tomotake Shigemori | Excavating bit of ground excavating device |
| KR101819008B1 (en) * | 2015-12-15 | 2018-02-28 | (주)나다건설 | Micropile foundation structure and construction method of micropile foundation |
| KR101745376B1 (en) | 2016-05-31 | 2017-06-09 | (주)나다건설 | Dividable hammer bit |
| CN113565441A (en) * | 2021-08-03 | 2021-10-29 | 深圳宏业基岩土科技股份有限公司 | Full casing pipe hole forming construction method with same diameter from top to bottom |
| CN113565441B (en) * | 2021-08-03 | 2024-01-12 | 深圳宏业基岩土科技股份有限公司 | Complete casing pore-forming construction method with same diameter up and down |
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