JP3247297U - Flexible cylindrical chain and its use - Google Patents

Abstract

【課題】伸縮自在な筒体連鎖体及びそれを使用した削孔装置を提供する。【解決手段】外径を異にする複数の筒体ＯＳ、ＭＳ、ＩＳを入れ子状に収容して短く収容でき、しかも複数の鋼管を左右に引張することで隣接する内外の鋼管が各管端のペーパー部Ｗ、Ｘ、Ｙ、Ｚで嵌合して長尺に連結するとともに、鋼管同士が嵌合して伸張方向に長尺となるとともに、伸縮方向及び筒中心まわりの回転に対して一体的に強く嵌合する筒体連鎖体ＳＲＴであって、筒体の開口縁に管肉厚のペーパー部を設けて、隣接する内外の筒体を筒体口径で嵌合して一体化できる構造とする。【選択図】図１[Problem] To provide a freely expandable linked body of cylinders and a drilling device using the same. [Solution] A linked body of cylinders SRT that can store multiple cylinders OS, MS, IS with different outer diameters in a nested manner to store them short, and that can be connected long by pulling multiple steel pipes left and right, with adjacent inner and outer steel pipes fitting together at the paper sections W, X, Y, Z at each pipe end, and the steel pipes fitting together to become long in the extension direction, and that can be tightly fitted together in the extension direction and against rotation around the center of the cylinder, and that has a structure in which a paper section with the pipe thickness is provided at the opening edge of the cylinder, and adjacent inner and outer cylinders can be fitted together at the cylinder diameter to be integrated. [Selected drawing] Figure 1

Description

本考案は外径を異にした複数の筒体を筒体の筒外径が大きい方が外側となるように入れ子状態に嵌装するとともに、半径方向に隣り合う筒体は筒体の前端部又は後端部で嵌合して筒体同士が互に連結可能な筒体連鎖体であり、同筒体連鎖体は筒体の中心線方向で離反する引張を与えると、筒体は引張方向に長く連接した長い筒体連鎖体となり、逆に筒体の中心線方向に互いに寄せるような加圧によって筒体は互いに嵌入して入れ子状態になって短い収縮状態になる筒体連鎖体に関する。及びその筒体連鎖体の削孔装置への利用に関する考案である。 This invention relates to a linked cylinder body in which multiple cylinders with different outer diameters are fitted together in a nested state with the larger outer diameter of the cylinders on the outside, and radially adjacent cylinders are fitted together at the front or rear end of the cylinders, allowing the cylinders to be connected to each other; when tension is applied to the linked cylinders in the direction of the center line of the cylinders, the cylinders become a long linked cylinder body that is connected long in the direction of the tension, and conversely, when pressure is applied to bring the cylinders closer together in the direction of the center line of the cylinders, the cylinders fit together and become nested, becoming a short contracted state. It is also an invention for the use of this linked cylinder body in a drilling device.

この種の筒体連鎖体としては、特許文献１の特開２０２２－９４１５８号公報で開示されているように、最大径の鋼管の内側にそれより径の小さい１つ又は複数の内側鋼管を入れ子状に収納可能にした延伸鋼管がある。この延伸鋼管は相反する外方向に引張して引き出して伸長状態にしたときに、引き出した位置で鋼管同士をロックする戻り防止機構のリング部材があって連係して、各鋼管はテレスコピックに連鎖して長尺になる伸縮自在な延伸鋼管についての構造が開示されている。 As disclosed in Patent Document 1, JP 2022-94158 A, an example of this type of cylindrical linked body is an elongated steel pipe that can store one or more inner steel pipes with smaller diameters inside the largest diameter steel pipe in a nested manner. This elongated steel pipe is pulled out in opposite outward directions to be extended, and is linked by a ring member of a return prevention mechanism that locks the steel pipes together at the extended position, so that each steel pipe is linked together telescopically to become long.

特開２０２２－９４１５８号公報JP 2022-94158 A 特開平８－２８４４７３号公報Japanese Patent Application Laid-Open No. 8-284473

しかし、前記特許文献１の延伸鋼管は、引き出した延長状態からの戻り防止機構は、筒状の鋼管同士の摺動をリング部材３０で係止して鋼管同士をその後端部と前端部で連係して伸長した状態の連結を可能とするものである。 However, the mechanism for preventing the drawn steel pipe in Patent Document 1 from returning from the extended state after being pulled out is a mechanism that uses a ring member 30 to prevent the cylindrical steel pipes from sliding against each other, connecting the rear and front ends of the steel pipes to enable them to be connected in an extended state.

しかしながら特許文献１の戻り防止機構は鋼管の引張方向に対してだけリング部材３０によって強力に係止して鋼管同士を連鎖させるものである。 However, the anti-return mechanism in Patent Document 1 strongly engages the steel pipes with the ring member 30 only in the tensile direction, linking the steel pipes together.

鋼管同士の回転方向に対しては、リング部材３０は連結力なく、回転フリーの状態の連結状態である。この特許文献１の戻り防止機構ではリング部材３０の部材だけで、鋼管同士を係止するものであり、引張方向の引張に対して鋼管の係止は、充分できるものであるが、鋼管の管中心軸まわりの回転に対する係止力は発生していず、引張力に対する連結は充分となりうるかもしれないが、鋼管同士の回転に対しては停止力がない（回転を止める手段はほとんどない。リング部材３０は回転止めの機能はない）。 The ring member 30 has no connecting force in the direction of rotation of the steel pipes, and is in a connected state in which it can rotate freely. In the return prevention mechanism of Patent Document 1, the ring member 30 alone holds the steel pipes together, and while it is sufficient to hold the steel pipes together against tension in the tensile direction, no stopping force is generated against rotation around the central axis of the steel pipes, and while it may be possible to provide a sufficient connection against tension, there is no stopping force against the rotation of the steel pipes (there is almost no means of stopping the rotation. The ring member 30 does not have a rotation-stopping function).

このように、特許文献１の鋼管同士の連結は、鋼中心線方向の引張・加圧方向の力（引張力、圧縮力）に対しては構造的に強い強度を有し、大きな力でも変位少なく連結できると判断される。しかし、鋼管に働く回転トルク，捩じれトルクの外部トルクに対して回転フリーになってトルク伝達はなく、回転トルクに対する抗トルクを発生しない。鋼管表面に働く加圧力、圧縮力に対しては鋼管単体の本来の単体の強度構造しか保持しておらず、強い力・トルク・捩じれ力に対して鋼管単体の構造強度で耐えるものであり、そのため負荷された鋼管に集中的に荷重され、鋼管の変形・変位・捩じれが大きくなると判断される。 In this way, the connection between steel pipes in Patent Document 1 is considered to have structural strength against forces in the tensile and compressive directions along the steel centerline (tensile and compressive forces), and can be connected with little displacement even under large forces. However, the steel pipes are free to rotate against external torques such as rotational torque and torsional torque, so no torque is transmitted and no resistance torque against the rotational torque is generated. Only the original strength structure of the steel pipe alone is maintained against the pressure and compressive forces acting on the steel pipe surface, and the structural strength of the steel pipe alone is sufficient to withstand strong forces, torque, and torsional forces. Therefore, it is considered that the load is concentrated on the loaded steel pipe, resulting in large deformation, displacement, and twisting of the steel pipe.

本願考案が解決しようとする課題は、従来の筒体連鎖体は外部からの捩じれトルク・回転トルク及び外力に対して筒体単体で受けるので筒体・鋼管の表面が変形・変位を受け易い欠点があったのを解消し、これらに対して高い強度を保有できる伸縮自在な筒体連鎖体を提供することにある。及びその有益な利用技術の提示にある。 The problem that the present invention aims to solve is to provide a stretchable linked body of cylindrical bodies that has high strength against external torsional torque, rotational torque, and external forces, eliminating the drawback that the surfaces of the cylindrical bodies and steel pipes are easily deformed and displaced because the cylindrical bodies alone bear the external torsional torque and rotational torque, and to present a technology for its beneficial use.

かかる課題を解決した本考案の構成は、
１） 基端側とその反対側の先端側の両端を開口し且つ筒外径の径寸法が異なる複数の筒体を、その筒外径が大きい方が外側となるように入れ子状態にしかも前記筒体の最大長さの寸法に全て収まる圧縮された状態にでき、且つ筒体同士が互に摺動可能に嵌装されたものとし、
更に嵌装した前記筒体の最外側となる最外筒体ではその基端側開口縁から先端開口に向けての所定巾の筒内周面に筒体の筒肉厚が基端方向に従って筒中心方向に向かって増大する内テーパー部Ｘを設けた構造とし、
嵌装した前記筒体の最内側となる最内筒体ではその先端側開口縁から基端に向って所定巾の筒外周面に先端に従って筒体の筒肉厚が筒半径方向に向けて増大する外テーパー部Ｙを設けた構造とし、
又嵌装した前記最外筒体と前記最内筒体との中間に嵌装される１個又は複数個の筒体である中間筒体では、基端側開口縁から先端開口に向けての所定巾の筒内周面に筒肉厚が基端方向に従って筒中心方向に向かって増大する内テーパー部Ｚを設けしかも先端側開口縁から基端に向けての所定巾の筒外周面に先端に従って筒体の筒肉厚が筒半径方向に向けて増大する外テーパー部Ｗを設けた構造とし、
嵌装した前記筒体の前記最外筒体を先端方向に及び前記最内筒体を基端方向の離反する方向に引張することで前記最外筒体・前記中間筒体・前記最内筒体の前記内テーパー部Ｘと前記外テーパー部Ｗと、又は前記外テーパー部Ｙと前記内テーパー部Ｚあるいは複数の中間筒体の前記内テーパー部Ｚと前記外テーパー部Ｗ，Ｚとが面的に嵌合して半径方向に隣り合う筒体の基端部と先端部が嵌合して連結されて長い筒体連鎖体となり、併せて隣り合う筒体は前記嵌合連結で緊締された複数の筒体が一体化したモノコック構造となって筒体の面強度が高くなり、筒体の捩じり・外力に対して屈曲・変形変位が少ない高い強度となる、伸縮自在な筒体連鎖体
２） 前記の伸縮自在な筒体連鎖体が、最外筒体１個と，中間筒体１個と，最内筒体１個の計３個の筒体で構成された前記１）記載の伸縮自在な筒体連鎖体
３） 前記内テーパー部Ｘ，Ｚと外テーパー部Ｙ，Ｗが、筒体とは別体として前記内テーパー部又は外テーパー部と同じ形状寸法に製作された内テーパー部材ＸＢ，ＺＢと外テーパー部材ＹＢ，ＷＢとを肉厚が均等厚な筒体Ｓの開口縁近くの筒体の内周面、又は外周面にネジ、又は接着剤で固着されて形成された前記１）又は２）記載の、伸縮自在な筒体連鎖体
４） 前記１），２）又は３）記載の構造の伸縮自在な筒体連鎖体を削孔装置の伸縮自在な外筒として使用し、しかも同外筒の基端側は基端側にある固定された機械装置又は削孔地盤側あるいは地表側固定物に固定し、前記伸縮自在な外筒の筒中心部に複数のロッドの連結と取り外しによって長さが伸縮可能なインナーロッドを配置し、同インナーロッドを回動させる回転装置を設け、同インナーロッドの先端に前記外筒の外径以上の円形削孔を可能とするインナービットを設けるとともに、前記インナーロッドの削孔方向の移動を前記外筒の先端部と連動させる連動部を備え、インナーロッドのロッド長さに応じて前記外筒の長さも自動的に伸縮できるようにしたことを特徴とする、削孔装置
５） 筒体の肉厚が均一な筒体の基端側とその反対の先端側の両端を開口し且つ筒外径の径寸法が異なる複数の筒体を、その筒外径が大きい方が外側となるように入れ子状態にしかも前記筒体の最大長さの寸法内に全ての筒体が収まる圧縮された状態にでき、且つ筒体同士が互に摺動可能に嵌装されたものであり、
更に嵌装した前記筒体の最外側となる最外筒体の基端側開口縁から先端開口に向けての所定巾の筒体の外径が基端方向に従って減少する縮径部ＭＳＫとした構造とし、
嵌装した前記筒体の最内側となる最内筒体の先端側開口縁から基端に向って所定巾の筒体の筒外径が先端方向に従って増大する拡径部ＭＫＫとした構造とし、
又嵌装した前記最外筒体と前記最内筒体との中間に嵌装される１個又は複数個の筒体である中間筒体は、基端側開口縁から先端開口に向けての所定巾の筒体の外径が基端方向に従って減少する縮径部ＭＳＫを設けしかも先端側開口縁から基端に向けての所定巾の筒体の外径を先端に従って筒体の筒外径が増大する拡径部ＭＫＫとした構造とし、
嵌装した前記筒体の前記最外筒体を先端方向に及び前記最内筒体を基端方向に互いに離反する方向に引張することで前記最外筒体・中間筒体・最内筒体の前記縮径部ＭＳＫと前記拡径部ＭＫＫとが面的に嵌合して半径方向に隣り合う二つの筒体の基端部と先端部が嵌合して連結されて長い筒体連鎖体となり、併せて隣り合う筒体は前記嵌合連結で緊締された複数の筒体が一体化したモノコック構造となって筒体の面強度が高くなり、筒体の捩じり・外力に対して屈曲・変形変位が少なくなり高い強度となる、伸縮自在な筒体連鎖体
６） 前記５）の構造の伸縮自在な筒体連鎖体を削孔装置の伸縮自在な外筒として使用し、しかも同外筒の基端側は基端側にある固定された機械装置又は削孔地盤あるいは地表側固定物に固定し、同伸縮自在な外筒体の筒中心部に複数のロッドの連結と取り外しによって長さが伸縮可能なインナーロッドを配置し、同インナーロッドを回動させる回転装置を設け、同インナーロッドの先端に前記外筒の外径以上の円形削孔を可能とするインナービットを設けるとともに、前記インナーロッドの削孔方向の移動を前記外筒の先端部と連動させる連動部を備え、インナーロッドのロッド長さに応じて前記外筒の長さも自動的に伸縮できるようにしたことを特徴とする、削孔装置
にある。 The configuration of the present invention that solves such problems is as follows:
1) A plurality of cylindrical bodies each having an opening at both the base end and the tip end on the opposite side and different diameters can be nested so that the larger diameters are on the outside, and can be compressed so that all of the cylindrical bodies fit within the maximum length dimension of the cylindrical bodies, and the cylindrical bodies are fitted together so that they can slide relative to each other.
Furthermore, an outermost cylinder, which is the outermost of the fitted cylinder, is provided with an inner tapered portion X on the inner peripheral surface of the cylinder having a predetermined width from the base end opening edge toward the tip opening, in which the cylinder wall thickness of the cylinder increases toward the center of the cylinder along the base end direction,
The innermost cylinder, which is the innermost of the fitted cylinder, is provided with an outer tapered portion Y on the outer circumferential surface of a given width from the tip end opening edge toward the base end, in which the thickness of the cylinder increases in the radial direction of the cylinder toward the tip end,
In addition, the intermediate cylinder, which is one or more cylinders fitted between the fitted outermost cylinder and the fitted innermost cylinder, is structured such that an inner tapered section Z is provided on the inner peripheral surface of the cylinder with a predetermined width from the base end opening edge toward the tip opening, where the cylinder thickness increases toward the center of the cylinder along the base end direction, and an outer tapered section W is provided on the outer peripheral surface of the cylinder with a predetermined width from the tip opening edge toward the base end, where the cylinder thickness of the cylinder increases toward the radial direction of the cylinder along the tip,
2) A stretchable linked body of cylinders, in which the outermost cylinder of the fitted cylinder is pulled in the tip direction and the innermost cylinder in the base direction, so that the inner taper portion X and the outer taper portion W of the outermost cylinder, the intermediate cylinder and the innermost cylinder, or the outer taper portion Y and the inner taper portion Z of the fitted cylinder, or the inner taper portion Z and the outer taper portions W and Z of the multiple intermediate cylinders are fitted together on a surface basis, and the base ends and tip ends of the cylinders adjacent in the radial direction are fitted together and connected to form a long linked body of cylinders, and the adjacent cylinders are also formed into a monocoque structure in which the multiple cylinders fastened by the fitting connection are integrated, thereby increasing the surface strength of the cylinders and providing high strength with little bending and deformation displacement against torsion and external forces of the cylinders. 3) A linked body of cylinders, in which the stretchable linked body of cylinders is formed as described in 1) above, and is constituted by a total of three cylinders, one outermost cylinder, one intermediate cylinder and one innermost cylinder. The stretchable linked cylinder body 4) according to 1) or 2) above, in which the inner taper portion X, Z and the outer taper portion Y, W are formed by fixing the inner taper member XB, ZB and the outer taper member YB, WB, which are manufactured separately from the cylinder body to the same shape and dimensions as the inner taper portion or the outer taper portion, to the inner or outer peripheral surface of the cylinder body S having a uniform thickness near the opening edge by screws or adhesive. A drilling device 5) using an extendable cylinder chain structure as described in 1), 2) or 3) as an extendable outer cylinder of a drilling device, further comprising a base end side of the outer cylinder fixed to a fixed mechanical device at the base end side or to a fixed object on the drilling ground or surface side, an inner rod whose length can be extended or contracted by connecting and disconnecting multiple rods is arranged in the center of the extendable outer cylinder, a rotating device is provided for rotating the inner rod, an inner bit is provided at the tip of the inner rod that enables circular drilling of holes with a diameter equal to or larger than the outer diameter of the outer cylinder, and a linking part is provided for linking the movement of the inner rod in the drilling direction with the tip of the outer cylinder, and the length of the outer cylinder can be automatically extended or contracted according to the length of the inner rod. A plurality of cylindrical bodies having a uniform wall thickness, both ends of which are open at the base end side and the opposite tip end side, and having different outer diameters, can be nested so that the larger outer diameters are on the outside, and all of the cylindrical bodies can be compressed to fit within the maximum length dimension of the cylindrical bodies, and the cylindrical bodies are fitted together so that they can slide relative to each other.
Further, the outer diameter of the fitted cylindrical body is reduced in a predetermined width from the base end opening edge of the outermost cylindrical body toward the tip opening, and the outer diameter of the cylindrical body is reduced in a base end direction.
The innermost cylinder, which is the innermost part of the fitted cylinder, has an expanded diameter portion MKK in which the outer diameter of the cylinder of a predetermined width increases from the tip side opening edge toward the base end,
In addition, the intermediate cylinder, which is one or more cylinders fitted between the fitted outermost cylinder and the fitted innermost cylinder, is structured so that a reduced diameter section MSK is provided in which the outer diameter of the cylinder of a predetermined width from the base end opening edge toward the tip opening decreases in the direction toward the base end, and an expanded diameter section MKK is provided in which the outer diameter of the cylinder of a predetermined width from the tip opening edge toward the base end increases in the direction toward the tip,
By pulling the outermost cylinder of the fitted cylinder in the tip direction and the innermost cylinder in the base direction in a direction away from each other, the reduced diameter portion MSK and the expanded diameter portion MKK of the outermost cylinder, intermediate cylinder, and innermost cylinder are fitted together on their surfaces, and the base end and tip end portions of two radially adjacent cylinders are fitted together and connected to form a long chain of cylinders, and the adjacent cylinders become a monocoque structure in which multiple cylinders fastened by the fitting connection are integrated, thereby increasing the surface strength of the cylinders, and the bending and deformation displacement of the cylinders due to torsion and external forces is reduced, resulting in high strength. 6) The drilling device is characterized in that an extendable cylindrical chain body of the structure 5) is used as an extendable outer cylinder of a drilling device, and the base end of the outer cylinder is fixed to a fixed mechanical device or the drilling ground or a fixed object on the ground surface at the base end, an inner rod whose length can be extended or contracted by connecting and disconnecting multiple rods is arranged in the center of the tube of the extendable outer cylinder body, a rotating device is provided for rotating the inner rod, an inner bit is provided at the tip of the inner rod that enables circular hole drilling with a diameter larger than the outer diameter of the outer cylinder, and a linking part is provided that links the movement of the inner rod in the drilling direction with the tip of the outer cylinder, so that the length of the outer cylinder can automatically be extended or contracted according to the length of the inner rod.

本考案の筒体連鎖体の半径方向の隣り合う二つの筒体の先端部と後端部の連結は、請求項１，２の筒体連鎖体の考案では、筒体の基端の内テーパー部Ｘ，Ｚと外テーパー部Ｙ，Ｗの面的な嵌合による連結である。又請求項３，４の考案の筒体連鎖体の連結では、縮径部ＳＫと拡径部ＫＫとの面的嵌合による連結である。 The connection between the front and rear ends of two adjacent cylinders in the radial direction of the cylinder chain of this invention is made by surface fitting of the inner tapered sections X, Z and the outer tapered sections Y, W at the base ends of the cylinders in the cylinder chain of the invention of claims 1 and 2. In addition, the connection of the cylinder chain of the invention of claims 3 and 4 is made by surface fitting of the reduced diameter section SK and the expanded diameter section KK.

いずれも半径方向の隣り合う二つの筒体の基端部と先端部との連結は筒面の面的嵌合によるものであって、筒体周面同士による圧接と摩擦による嵌合であるので、特許文献１の如くリング部材３０の狭い面積での筒体内周面での係止と違い、特許文献１のリング部材３０よりはるかに広い面積での接触であり、しかも嵌合するので圧接状態にあるので、嵌合の摩擦力は特許文献１のリング部材に比べてはるかに広い。しかも嵌合であるので圧接による摩擦で、摩擦力は特許文献１のリング部材に比べはるかに大きいので連結力はきわめて高い。 In both cases, the connection between the base end and tip end of two adjacent cylindrical bodies in the radial direction is made by surface fitting of the cylindrical surfaces, and the fitting is made by pressure contact and friction between the cylindrical body circumferential surfaces, so unlike the locking on the cylindrical inner circumferential surface in a small area of the ring member 30 as in Patent Document 1, the contact is made over a much larger area than the ring member 30 in Patent Document 1, and since they are fitted together and in a pressure contact state, the frictional force of the fitting is much greater than that of the ring member in Patent Document 1. Moreover, since it is fitted together, the friction is caused by pressure contact, and the frictional force is much greater than that of the ring member in Patent Document 1, so the connecting force is extremely high.

特に筒体の回転に対してはその嵌合の周面積が広く、且つ嵌合していることで嵌合圧が高いので外テーパー部Ｙ，Ｗと内テーパー部Ｘ，Ｚの嵌合部分の筒体の回転に対する抵抗力は引用文献１のものに比べはるかに大きく、強力である。よって本考案の筒体嵌合は、中心線に沿って引張方向に対して及びその中心線まわりの回転に対してもきわめて強力な抗力を発生させ、筒体の中心線方向に働く引張力・圧縮力及び中心線まわりの回転に対しても嵌合抗力は非常に高いものとなる。よって嵌合した筒体表面に対する外力、回転モーメントに対する連結強度・構造強度は高いものとなる。 In particular, with respect to rotation of the cylinder, the circumferential area of the fit is wide, and the fit pressure is high due to the fit, so the resistance to rotation of the cylinder at the fit parts of the outer tapered sections Y, W and the inner tapered sections X, Z is much larger and stronger than that of Reference 1. Therefore, the cylinder fit of this invention generates extremely strong resistance in the tensile direction along the center line and against rotation around that center line, and the fit resistance is also very high against tensile and compressive forces acting in the direction of the center line of the cylinder and against rotation around the center line. Therefore, the connection strength and structural strength against external forces and rotational moments on the fitted cylinder surfaces are high.

しかも半径方向の隣り合う筒体が嵌合することで連鎖した筒体の基端部・先端部の所要長さにおいて嵌合による緊締によって各筒体は強く一体化して複数の筒体が連結されたモノコック構造体となり、一段と筒体連鎖体の面強度・捩じれトルク・外部力に対して強いモノコック殻体となって、高い強度構造体となり、変形・変位・捩じれ等の変形変位を強く抑える構造となる。 In addition, by fitting adjacent cylindrical bodies in the radial direction together, the cylindrical bodies are firmly integrated into one body by the fastening of the base and tip ends of the linked cylindrical bodies at the required length by the fitting, forming a monocoque structure in which multiple cylindrical bodies are connected, and this results in a monocoque shell body that is even stronger against the surface strength, torsional torque, and external forces of the linked cylindrical bodies, resulting in a high-strength structure that strongly suppresses deformation, displacement, twisting, and other deformation displacements.

しかも筒体連鎖体は筒中心線の離反方向の引張に対して入れ子状態の短く圧縮された短い寸法から筒体の長さに筒体の数を乗じた寸法に近い長い寸法に伸長できるものとなる。 In addition, the chain of cylinders can be stretched from a short, compressed nested size to a long size close to the length of the cylinder multiplied by the number of cylinders when pulled away from the center line of the cylinders.

このように、本考案では筒体連鎖体の寸法は入れ子状態の圧縮された短い寸法からこの筒体寸法の筒体数に乗じた伸長した長い状態に変化できるとともに、各筒体が上端部と下端部とが嵌合して筒体が緊締したモノコック構造体となり強度が高くなり、よって筒体の捩じり変形・変位も少なく、加圧変位・変形も少なくできる。 In this way, with this invention, the dimensions of the chain of cylinders can be changed from a compressed short dimension in a nested state to a long extended state where the dimensions of the cylinders are multiplied by the number of cylinders, and the upper and lower ends of each cylinder fit together to form a monocoque structure in which the cylinders are tightened, increasing strength, and therefore minimizing torsional deformation and displacement of the cylinders, as well as displacement and deformation due to pressure.

図１は、実用新案登録請求の範囲の請求項１，２の本願考案の削孔装置の外筒として使用した実施例１の筒体連鎖体の嵌装（収納）状態と伸長状態を示す説明図である。FIG. 1 is an explanatory diagram showing the fitted (stored) state and the extended state of a chain of cylinders of the first embodiment used as an outer cylinder of a hole-drilling device according to the present invention as defined in claims 1 and 2 of the utility model registration claims. 図２は、実施例１の筒体連鎖体（外筒）の伸長状態を示す説明図である。FIG. 2 is an explanatory diagram showing the stretched state of the chain of cylinders (outer cylinder) of the first embodiment. 図３は、実施例１の最外筒体と中間筒体との内テーパー部Ｘと外テーパー部Ｗとの嵌合位置での嵌装状態を示す拡大断面図である。FIG. 3 is an enlarged cross-sectional view showing a fitted state of the inner tapered portion X and the outer tapered portion W of the outermost cylinder body and the intermediate cylinder body in a fitting position according to the first embodiment. 図４は、実施例１の中間筒体と最内筒体の内テーパー部Ｚと外テーパー部Ｙとの嵌合の状態を示す拡大断面図である。FIG. 4 is an enlarged cross-sectional view showing the state of engagement between the inner tapered portion Z and the outer tapered portion Y of the intermediate cylinder and the innermost cylinder of the first embodiment. 図５は、本願考案の請求項５，６の均一な板厚の筒体の先端部，基端部がコーン状の拡径部ＭＫＫ，縮径部ＭＳＫの嵌合による筒体連鎖体を使用した実施例２の削孔装置の外筒と外筒の筒体連鎖体の伸長状態を示す断面図である。Figure 5 is a cross-sectional view showing the extended state of the outer tube and the chain of cylindrical bodies of the outer tube of a drilling device of Example 2, which uses a chain of cylindrical bodies formed by fitting together a cone-shaped enlarged diameter portion MKK and a reduced diameter portion MSK at the tip and base ends of a cylindrical body of uniform thickness as claimed in claims 5 and 6 of the present invention. 図６は、実施例２の隣り合う筒体の拡径部ＭＫＫと縮径部ＭＳＫとの嵌合状態を示す拡大断面図である。FIG. 6 is an enlarged cross-sectional view showing a fitting state between the enlarged diameter portion MKK and the reduced diameter portion MSK of adjacent cylindrical bodies in the second embodiment. 図７は、実施例２の隣り合う筒体の拡径部ＭＫＫと縮径部ＭＳＫとの非嵌合状態を示す拡大説明図である。FIG. 7 is an enlarged explanatory view showing a non-fitted state between the enlarged diameter portion MKK and the reduced diameter portion MSK of adjacent cylindrical bodies in the second embodiment. 図８は、実施例１における内テーパー部Ｘ，Ｗと外テーパー部Ｙ，Ｗを別体の内テーパー部材ＸＢ，ＺＢと外テーパー部材ＹＢ,ＷＢとを製作して筒体の内周面又は外周面にネジ又は接着剤で固着する構造の実施例３を示す説明図である。FIG. 8 is an explanatory diagram showing a third embodiment of a structure in which the inner taper portions X, W and the outer taper portions Y, W in the first embodiment are fabricated as separate inner taper members XB, ZB and outer taper members YB, WB, which are then fixed to the inner or outer peripheral surface of a cylindrical body with screws or an adhesive. 図９は、実施例３の非嵌装の状態の嵌装状態を示す拡大断面図である。FIG. 9 is an enlarged cross-sectional view showing the fitted state of the third embodiment in a non-fitted state. 図１０は、実施例３の嵌合状態を示す拡大断面図である。FIG. 10 is an enlarged cross-sectional view showing the fitted state of the third embodiment.

本考案の筒体の内テーパー部Ｘ，外テーパー部Ｙの肉厚の増大する角度を同じにすることを通常とし、又これら内テーパー部Ｘ，外テーパー部Ｙの素材は筒体の素材と同じで肉厚を変えて（一体成形で）テーパー状として、又テーパー部の嵌合に対して筒体が大きく変形・破断することがない筒体素材を使用する。同様に拡径部ＫＫ，縮径部ＳＫの拡径部の拡径角、及び縮径部の縮径角は略同じ角度とし、強い力で変形しても耐えられる筒体素材とする。 The angle at which the thickness of the inner tapered section X and the outer tapered section Y of the tube of this invention increases is usually the same, and the material of these inner tapered section X and outer tapered section Y is the same as the material of the tube, but the thickness is changed (by integral molding) to form a tapered shape, and a tube material is used that will not cause the tube to deform or break significantly when the tapered sections are fitted together. Similarly, the expansion angle of the expansion section KK and the contraction angle of the contraction section SK are approximately the same angle, and the tube material is one that can withstand deformation even when subjected to strong force.

図１～１０及び実施例説明で表示される符号を説明する。
Ｓは筒体（総称）、ＯＳは最外筒体、ＭＳは中間筒体、ＩＳは最内筒体、Ｘは最外筒体ＯＳの厚みで一体成形された内テーパー部、Ｚは中間筒体ＭＳの厚みで一体成形された内テーパー部、Ｙは最内筒体ＩＳの厚みで一体成形された外テーパー部、Ｗは中間筒体ＭＳの厚みで一体成形された外テーパー部、ＳＲＴは筒体連鎖体、ＳＯは筒体Ｓの開口、ＳＯＲは筒体Ｓの開口縁、ＳＳＯは筒体Ｓの外周面、ＳＳＩは筒体Ｓの内周面、ＳＬは筒体Ｓの中心線、ＳＫは最外筒体ＯＳの縮径部、ＫＫは最内筒体ＩＳの拡径部、ＭＫＫは中間筒体ＭＳの拡径部、ＭＳＫは中間筒体ＭＫの縮径部、ＫＧは嵌合部、ＫＧＦは嵌合面、ＩＲはインナーロッド、Ｒｏｄはねじ連結できるロッド、ＩＢはインナービット、ＤＳは外筒、ＲＢは連動部、ＫＤは回転装置、ＸＢは内テーパー部Ｚ，Ｘを形成する筒体Ｓとは別体の内テーパー部材、ＺＢは筒体Ｓとは別体のうちテーパー部材、ＹＢは筒体Ｓとは別体の外テーパー部材、ＹＷは筒体Ｓとは別体の外テーバー部材、ＮＧは内外テーパー部材を筒体に取付けるための止ネジ、Ｄは削孔装置を示す。 The symbols used in FIGS. 1 to 10 and in the description of the embodiments will now be explained.
S is a cylinder (generic term), OS is an outermost cylinder, MS is an intermediate cylinder, IS is an innermost cylinder, X is an inner tapered portion integrally molded with the thickness of the outermost cylinder OS, Z is an inner tapered portion integrally molded with the thickness of the intermediate cylinder MS, Y is an outer tapered portion integrally molded with the thickness of the innermost cylinder IS, W is an outer tapered portion integrally molded with the thickness of the intermediate cylinder MS, SRT is a chain of cylinders, SO is the opening of the cylinder S, SOR is the opening edge of the cylinder S, SSO is the outer peripheral surface of the cylinder S, SSI is the inner peripheral surface of the cylinder S, SL is the center line of the cylinder S, SK is the reduced diameter portion of the outermost cylinder OS, and KK is the expanded diameter portion of the innermost cylinder IS. , MKK is the expanded portion of the intermediate cylinder MS, MSK is the reduced diameter portion of the intermediate cylinder MK, KG is the fitting portion, KGF is the fitting surface, IR is the inner rod, Rod is a rod that can be connected with a screw, IB is the inner bit, DS is the outer cylinder, RB is the interlocking portion, KD is the rotation device, XB is an inner taper member separate from the cylinder S that forms the inner taper portions Z and X, ZB is a taper member separate from the cylinder S, YB is an outer taper member separate from the cylinder S, YW is an outer taper member separate from the cylinder S, NG is a set screw for attaching the inner and outer taper members to the cylinder, and D is a hole-drilling device.

（実施例１の説明）
実施例１，２とも筒体の素材は鉄製の鋼管樹脂を使用した。実施例１の筒体の厚みは８ｍｍ程とし、内テーパー部Ｘの間に張り出す厚みは３ｍｍ程とし、その内テーパー部Ｘ，外テーパー部Ｙのテーパー部の角度は２.４度程である。又実施例２の図６，７の均厚の筒体は６ｍｍで、拡径部・縮径部の筒体の径変化の角度は０．２～１０度としている。
（実施例１について） (Description of Example 1)
In both Examples 1 and 2, the material of the cylinder was a steel pipe made of resin. The thickness of the cylinder in Example 1 was about 8 mm, the thickness of the protrusion between the inner taper portion X was about 3 mm, and the angle of the taper portion between the inner taper portion X and the outer taper portion Y was about 2.4 degrees. In Example 2, the uniform thickness cylinder in Figures 6 and 7 was 6 mm, and the angle of the diameter change of the cylinder in the expanded and contracted diameter portions was 0.2 to 10 degrees.
(Regarding Example 1)

図１～４に示す実施例１は、請求項（２，１）の考案の筒体連鎖体を削孔装置に利用した請求項４項の考案の実施例である。最外筒体ＯＳの基端内周面ＳＳＩに内テーパー部Ｘを設け、最内筒体ＩＳの先端部の外周面ＳＳＯに外テーパー部Ｙを筒体の肉厚を変えて設けている。最外筒体ＯＳと最内筒体ＩＳの中間にある中間筒体ＭＳの基端側に内テーパー部Ｚを設け、先端側には外テーパー部Ｗを設けている。そして、中間筒体ＭＳの内テーパー部Ｚは最内筒体ＩＳの外テーパー部Ｙと嵌合する。又は、更に最外筒体ＯＳの基端の内テーパー部Ｘは中間筒体ＭＳの先端の外テーパー部Ｗと嵌合している。中間筒体ＭＳ同士が隣り同士として嵌装する位置では、中間筒体ＭＳの内テーパー部Ｚは中間筒体ＭＳの外テーパー部Ｗと嵌合する。全ての筒体Ｓ（最外側筒体ＯＳ，中間筒体ＭＳ，最内側筒体ＩＳ）はテーパー部の嵌合で連結されて図１に示すような長い筒体連鎖体ＳＲＴを形成する。図１は筒体３個の例であるが、中間筒体ＭＳを複数個とすることもできる。 Example 1 shown in Figures 1 to 4 is an embodiment of the invention of claim 4, in which the cylinder chain of the invention of claim (2, 1) is used in a drilling device. An inner taper section X is provided on the inner peripheral surface SSI at the base end of the outermost cylinder OS, and an outer taper section Y is provided on the outer peripheral surface SSO at the tip end of the innermost cylinder IS, with the thickness of the cylinder being changed. An inner taper section Z is provided on the base end side of the intermediate cylinder MS, which is located between the outermost cylinder OS and the innermost cylinder IS, and an outer taper section W is provided on the tip end side. The inner taper section Z of the intermediate cylinder MS fits into the outer taper section Y of the innermost cylinder IS. Or, further, the inner taper section X at the base end of the outermost cylinder OS fits into the outer taper section W at the tip end of the intermediate cylinder MS. When the intermediate cylinders MS are fitted next to each other, the inner taper section Z of the intermediate cylinder MS fits into the outer taper section W of the intermediate cylinder MS. All of the cylinders S (the outermost cylinder OS, the intermediate cylinder MS, and the innermost cylinder IS) are connected by fitting the tapered portions to form a long cylinder chain SRT as shown in Figure 1. Figure 1 shows an example of three cylinders, but there can also be multiple intermediate cylinders MS.

この実施例１の筒体連鎖体ＳＲＴは、図１に示すような伸長した状態と、入れ子状に嵌装して最長の筒長さの筒体内に収まるような短く圧縮された状態となる。
この実施例１の筒体連鎖体ＳＲＴを、削孔装置Ｄの長さが伸縮可能な外筒ＤＳとして使用した例でもある。この外筒ＤＳの中心部に複数本のロッドＲをネジ螺合で継いで伸長できるインナーロッドＩＲを配置し、同インナーロッドＩＲの先端部ＩＤにインナービットＩＢを設け、同先端部の前進移動を前記外筒ＤＳの先端部に同期して前進させるが回転は伝えない連動部ＲＢを設けている。 The chain of cylinders SRT of this embodiment 1 can be in an extended state as shown in FIG. 1 or in a compressed state in which it is fitted in a nested manner and is stored within the cylinder with the longest cylinder length.
This is also an example in which the cylinder chain SRT of Example 1 is used as an outer cylinder DS that is extendable in length for a hole-drilling device D. An inner rod IR that can be extended by connecting a plurality of rods R by screwing them together is arranged in the center of this outer cylinder DS, and an inner bit IB is provided at the tip ID of the inner rod IR, and an interlocking part RB is provided that advances the tip in sync with the tip of the outer cylinder DS but does not transmit rotation.

実施例１の削孔装置Ｄで、地盤に対してインナーロッドＩＲをその回転装置ＫＤで回転させて、先端に設けた連動部ＲＢのインナービットＩＢを回転させて削孔する。削孔とともにインナーロッドＩＲは削孔作業中にロッドＩＲを複数継いで長くしていく。インナーロッドＩＲが長くなれば、連動部ＲＢは前進し、連動部ＲＢの前進は外管ＤＳの前端を前進させる。この前進によって、伸縮自在な筒体連鎖体ＳＲＴを使った外筒ＤＳの先端部は、インナーロッドＩＲの先端（削孔位置）とともに伸長することで前進し、前進した次の削孔位置でもインナーロッドＩＲの外周を保護する外筒ＤＳも長くなって自動的に保護の機能を保持できる。 In the drilling device D of Example 1, the inner rod IR is rotated with its rotating device KD relative to the ground, and the inner bit IB of the interlocking part RB at the tip is rotated to drill holes. As the inner rod IR is drilled, it is lengthened by connecting multiple rods IR during the drilling operation. As the inner rod IR becomes longer, the interlocking part RB advances, and the advancement of the interlocking part RB advances the front end of the outer tube DS. As a result of this advancement, the tip of the outer tube DS, which uses the expandable tube chain SRT, advances by extending together with the tip of the inner rod IR (drilling position), and the outer tube DS that protects the outer circumference of the inner rod IR also becomes longer at the next drilling position after it has advanced, automatically maintaining its protective function.

よって、本実施例１によれば、従来のように外筒を削孔深さに応じて伸長するための複数本の短い外筒体をねじで継ぐ作業が不要になるので、削孔作業工程を大幅に短縮することができ、作業時間と作業工程を大幅に短縮できるものとなる。
（実施例２の説明） Therefore, according to this embodiment 1, the conventional work of connecting multiple short outer cylinder bodies with screws to extend the outer cylinder according to the drilling depth is no longer necessary, so the drilling work process can be significantly shortened, and the work time and work process can be significantly shortened.
(Description of Example 2)

図５～７に示す実施例２では筒体の連鎖体を形成する筒体Ｓの嵌合が、実施例１の内テーパー部Ｘと外テーパー部Ｙに代えて、均一厚みの筒体Ｓの先端部・後端部において、拡径率と縮径率とを略同じにするコーン状の拡径部ＫＫ，ＭＫＫ，縮径部ＳＫ，ＭＳＫを形成して、隣り合う筒体Ｓ又は中間筒体ＭＳの後端部と先端部の拡径部ＫＫ，ＭＫＫと縮径部ＳＫ，ＭＳＫとを嵌合させることで面的接触による嵌合を形成するものである。実施例１のテーパー部による嵌合が、テーパー部と同様な効果を拡径部ＫＫ，ＭＫＫと縮径部ＳＫ，ＭＳＫにコーン状筒形状とすることで嵌合による連結が行える。実施例２も実施例１と同様な効果を得ることができる。 In the second embodiment shown in Figures 5 to 7, the fitting of the cylinders S forming a chain of cylinders is performed by forming cone-shaped enlarged diameter sections KK, MKK and reduced diameter sections SK, MSK at the front and rear ends of the cylinders S of uniform thickness, instead of the inner tapered section X and outer tapered section Y of the first embodiment, which have approximately the same enlargement rate and reduction rate, and fitting the rear ends of the adjacent cylinders S or intermediate cylinders MS with the enlarged diameter sections KK, MKK at the front end and the reduced diameter sections SK, MSK to form a fitting by surface contact. The fitting by the tapered sections of the first embodiment can be connected by fitting by making the enlarged diameter sections KK, MKK and reduced diameter sections SK, MSK into a cone-shaped cylinder shape, which has the same effect as the tapered sections. The second embodiment can also obtain the same effect as the first embodiment.

本実施例２でも実施例１同様に伸縮自在な筒体の連鎖体ＳＲＴを削孔装置の外筒と使用した例である。削孔作業中に外筒をねじ螺着して伸長させる作業が不要に出来るので、実施例１同様に、削孔作業の作業工程を大幅に短縮化でき、削孔工事の工期を短縮でき工費も安価に出来るものになる。 In this second embodiment, as in the first embodiment, a chain of expandable cylinders SRT is used as the outer cylinder of a drilling device. This eliminates the need to screw the outer cylinder to extend it during drilling work, and as in the first embodiment, this significantly shortens the drilling work process, shortens the construction period for drilling work, and reduces construction costs.

この実施例２における拡径率（縮径率）は１０～２０％程であり、その拡径部、縮径部がある巾の長さは６０～１２０ｍｍ程である。又、先頭部の外径寸法は直径１３８ｍｍが直径１２２．３５ｍｍに縮径している。又、中間部の外径寸法は１１４．３ｍｍ程である。
図８～１０に示す実施例３は実施例１の内テーパー部Ｘ，Ｚと、外テーパー部Ｙ，Ｗとを筒体Ｓの素材とは別の素材又は材質のもので内テーパー部Ｘ，Ｚ、外テーパー部Ｙ，Ｗと形状を同じ形状寸法の内テーパー部材ＸＢ，ＺＢと外テーパー部材ＹＢ，ＷＢを筒体Ｓとは別体に製作し、筒体の開口部の内周面・外周面にネジ又は接着剤に固着して実施例１と同じ構造にする例である。 In this embodiment 2, the diameter expansion ratio (diameter reduction ratio) is about 10 to 20%, and the width of the expanded and reduced diameter parts is about 60 to 120 mm. The outer diameter of the leading part is reduced from 138 mm to 122.35 mm. The outer diameter of the middle part is about 114.3 mm.
Example 3 shown in Figures 8 to 10 is an example in which the inner taper sections X, Z and the outer taper sections Y, W of Example 1 are made of a material or substance different from the material of the cylindrical body S, and inner taper members XB, ZB and outer taper members YB, WB having the same shapes and dimensions as the inner taper sections X, Z and outer taper sections Y, W are manufactured separately from the cylindrical body S, and are fixed to the inner and outer circumferential surfaces of the opening of the cylindrical body with screws or an adhesive, resulting in the same structure as Example 1.

本考案は削孔装置の外筒としての利用例を説明したが、これ以外の用途の伸縮自在な筒体連鎖体として使用可能性がある。 This invention has been described as being used as an outer cylinder for a drilling device, but it can also be used as a chain of extendable cylinders for other purposes.

Ｓ 筒体
ＯＳ 最外筒体
ＭＳ 中間筒体
ＩＳ 最内筒体
ＳＳＩ 筒体Ｓの基端内周面
ＳＳＯ 筒体Ｓの先端外周面
Ｘ 内テーパー部
Ｙ 外テーパー部
Ｚ 内テーパー部
Ｗ 外テーパー部
ＸＢ 内テーパー部材
ＹＢ 外テーパー部材
ＺＢ 内テーパー部材
ＷＢ 外テーパー部材
ＳＯｋ 筒体の基端側開口
ＳＯｓ 筒体の先端側開口
Ｌｃ 筒体の中心線
Ｄ 削孔装置
ＤＳ 外筒
ＩＲ インナーロッド
ＩＢ インナービット
ＩＤ インナービット取付Ｄ（先端部）
ＲＢ 連動部
ＫＫ 拡径部
ＳＫ 縮径部
ＭＫＫ 中間筒体ＭＳの拡径部
ＭＳＫ 中間筒体ＭＳの縮径部
ＫＧ 嵌合部
ＯＲｋ 基端側開口縁
ＯＲｓ 先端側開口縁 S Cylinder body OS Outermost cylinder body MS Intermediate cylinder body IS Innermost cylinder body SSI Base end inner peripheral surface SSO of cylinder body S Tip outer peripheral surface X of cylinder body S Inner tapered portion Y Outer tapered portion Z Inner tapered portion W Outer tapered portion XB Inner tapered member YB Outer tapered member ZB Inner tapered member WB Outer tapered member SOk Base end opening SOs of cylinder Tip end opening Lc of cylinder Center line D of cylinder Drilling device DS Outer cylinder IR Inner rod IB Inner bit ID Inner bit attachment D (tip)
RB: interlocking portion KK; enlarged diameter portion SK; reduced diameter portion MKK; enlarged diameter portion MSK of intermediate cylinder MS; reduced diameter portion KG of intermediate cylinder MS; fitting portion ORk; base end opening edge ORs; tip end opening edge

かかる課題を解決した本考案の構成は、
１）基端側とその反対側の先端側の両端を開口し且つ筒外径の径寸法が異なる複数の筒体を、その筒外径が大きい方が外側となるように入れ子状態にしかも前記筒体の最大長さの寸法に全て収まる圧縮された状態にでき、且つ筒体同士が互に摺動可能に嵌装されたものとし、
更に嵌装した前記筒体の最外側となる最外筒体ではその基端側開口縁から先端開口に向けての所定巾の筒内周面に筒体の筒肉厚が基端方向に従って筒中心方向に向かって増大する内テーパー部Ｘを設けた構造とし、
嵌装した前記筒体の最内側となる最内筒体ではその先端側開口縁から基端に向って所定巾の筒外周面に先端に従って筒体の筒肉厚が筒半径方向に向けて増大する外テーパー部Ｙを設けた構造とし、
又嵌装した前記最外筒体と前記最内筒体との中間に嵌装される１個又は複数個の筒体である中間筒体では、基端側開口縁から先端開口に向けての所定巾の筒内周面に筒肉厚が基端方向に従って筒中心方向に向かって増大する内テーパー部Ｚを設けしかも先端側開口縁から基端に向けての所定巾の筒外周面に先端に従って筒体の筒肉厚が筒半径方向に向けて増大する外テーパー部Ｗを設けた構造とし、
嵌装した前記筒体の前記最外筒体を先端方向に及び前記最内筒体を基端方向の離反する方向に引張することで前記最外筒体・前記中間筒体・前記最内筒体の前記内テーパー部Ｘと前記外テーパー部Ｗと、又は前記外テーパー部Ｙと前記内テーパー部Ｚあるいは複数の中間筒体の前記内テーパー部Ｚと前記外テーパー部Ｗ，Ｚとが面的に嵌合して半径方向に隣り合う筒体の基端部と先端部が嵌合して連結されて長い筒体連鎖体となり、併せて隣り合う筒体は前記嵌合連結で緊締された複数の筒体が一体化したモノコック構造となって筒体の面強度が高くなり、筒体の捩じり・外力に対して屈曲・変形変位が少ない高い強度となる、伸縮自在な筒体連鎖体
２）前記の伸縮自在な筒体連鎖体が、最外筒体１個と，中間筒体１個と，最内筒体１個の計３個の筒体で構成された前記１）記載の伸縮自在な筒体連鎖体
３）前記内テーパー部Ｘ，Ｚと外テーパー部Ｙ，Ｗが、筒体とは別体として前記内テーパー部又は外テーパー部と同じ形状寸法に製作された内テーパー部材ＸＢ，ＺＢと外テーパー部材ＹＢ，ＷＢとを肉厚が均等厚な筒体Ｓの開口縁近くの筒体の内周面、又は外周面にネジ、又は接着剤で固着されて形成された前記１）又は２）記載の、伸縮自在な筒体連鎖体
４）前記１），又は２）記載の構造の伸縮自在な筒体連鎖体を削孔装置の伸縮自在な外筒として使用し、しかも同外筒の基端側は基端側にある固定された機械装置又は削孔地盤側あるいは地表側固定物に固定し、前記伸縮自在な外筒の筒中心部に複数のロッドの連結と取り外しによって長さが伸縮可能なインナーロッドを配置し、同インナーロッドを回動させる回転装置を設け、同インナーロッドの先端に前記外筒の外径以上の円形削孔を可能とするインナービットを設けるとともに、前記インナーロッドの削孔方向の移動を前記外筒の先端部と連動させる連動部を備え、インナーロッドのロッド長さに応じて前記外筒の長さも自動的に伸縮できるようにしたことを特徴とする、削孔装置
５）前記３）記載の構造の伸縮自在な筒体連鎖体を削孔装置の伸縮自在な外筒として使用し、しかも同外筒の基端側は基端側にある固定された機械装置又は削孔地盤側あるいは地表側固定物に固定し、前記伸縮自在な外筒の筒中心部に複数のロッドの連結と取り外しによって長さが伸縮可能なインナーロッドを配置し、同インナーロッドを回動させる回転装置を設け、同インナーロッドの先端に前記外筒の外径以上の円形削孔を可能とするインナービットを設けるとともに、前記インナーロッドの削孔方向の移動を前記外筒の先端部と連動させる連動部を備え、インナーロッドのロッド長さに応じて前記外筒の長さも自動的に伸縮できるようにしたことを特徴とする、削孔装置
６）筒体の肉厚が均一な筒体の基端側とその反対の先端側の両端を開口し且つ筒外径の径寸法が異なる複数の筒体を、その筒外径が大きい方が外側となるように入れ子状態にしかも前記筒体の最大長さの寸法内に全ての筒体が収まる圧縮された状態にでき、且つ筒体同士が互に摺動可能に嵌装されたものであり、
更に嵌装した前記筒体の最外側となる最外筒体の基端側開口縁から先端開口に向けての所定巾の筒体の外径が基端方向に従って減少する縮径部ＳＫとした構造とし、
嵌装した前記筒体の最内側となる最内筒体の先端側開口縁から基端に向って所定巾の筒体の筒外径が先端方向に従って増大する拡径部ＫＫとした構造とし、
又嵌装した前記最外筒体と前記最内筒体との中間に嵌装される１個又は複数個の筒体である中間筒体ＭＳは、基端側開口縁から先端開口に向けての所定巾の筒体の外径が基端方向に従って減少する縮径部ＭＳＫを設けしかも先端側開口縁から基端に向けての所定巾の筒体の外径を先端に従って筒体の筒外径が増大する拡径部ＭＫＫとした構造とし、
嵌装した前記筒体の前記最外筒体を先端方向に及び前記最内筒体を基端方向に互いに離反する方向に引張することで前記最外筒体・中間筒体・最内筒体の前記縮径部ＭＳＫと前記拡径部ＭＫＫとが面的に嵌合して半径方向に隣り合う二つの筒体の基端部と先端部が嵌合して連結されて長い筒体連鎖体となり、併せて隣り合う筒体は前記嵌合連結で緊締された複数の筒体が一体化したモノコック構造となって筒体の面強度が高くなり、筒体の捩じり・外力に対して屈曲・変形変位が少なくなり高い強度となる、伸縮自在な筒体連鎖体
７） 前記６）の構造の伸縮自在な筒体連鎖体を削孔装置の伸縮自在な外筒として使用し、しかも同外筒の基端側は基端側にある固定された機械装置又は削孔地盤あるいは地表側固定物に固定し、同伸縮自在な外筒体の筒中心部に複数のロッドの連結と取り外しによって長さが伸縮可能なインナーロッドを配置し、同インナーロッドを回動させる回転装置を設け、同インナーロッドの先端に前記外筒の外径以上の円形削孔を可能とするインナービットを設けるとともに、前記インナーロッドの削孔方向の移動を前記外筒の先端部と連動させる連動部を備え、インナーロッドのロッド長さに応じて前記外筒の長さも自動的に伸縮できるようにしたことを特徴とする、削孔装置
にある。
The configuration of the present invention that solves such problems is as follows:
1) A plurality of cylindrical bodies each having an opening at both the base end and the tip end on the opposite side and different diameters can be nested so that the larger diameters are on the outside, and can be compressed so that all of the cylindrical bodies fit within the maximum length dimension, and the cylindrical bodies are fitted together so that they can slide relative to each other.
Furthermore, an outermost cylinder, which is the outermost of the fitted cylinder, is provided with an inner tapered portion X on the inner peripheral surface of the cylinder having a predetermined width from the base end opening edge toward the tip opening, in which the cylinder wall thickness of the cylinder increases toward the center of the cylinder along the base end direction,
The innermost cylinder, which is the innermost of the fitted cylinder, is provided with an outer tapered portion Y on the outer circumferential surface of a given width from the tip end opening edge toward the base end, in which the thickness of the cylinder increases in the radial direction of the cylinder toward the tip end,
In addition, the intermediate cylinder, which is one or more cylinders fitted between the fitted outermost cylinder and the fitted innermost cylinder, is structured such that an inner tapered section Z is provided on the inner peripheral surface of the cylinder with a predetermined width from the base end opening edge toward the tip opening, where the cylinder thickness increases toward the center of the cylinder along the base end direction, and an outer tapered section W is provided on the outer peripheral surface of the cylinder with a predetermined width from the tip opening edge toward the base end, where the cylinder thickness of the cylinder increases toward the radial direction of the cylinder along the tip,
By pulling the outermost cylinder of the fitted cylinder in the distal direction and the innermost cylinder in the proximal direction away from each other, the inner taper portion X and the outer taper portion W of the outermost cylinder, the intermediate cylinder, and the innermost cylinder, or the outer taper portion Y and the inner taper portion Z, or the inner taper portion Z and the outer taper portions W and Z of the multiple intermediate cylinders, are fitted together on a surface basis, and the base end and the tip end of the cylinders adjacent in the radial direction are fitted together and connected to form a long chain of cylinders. In addition, the adjacent cylinders form a monocoque structure in which multiple cylinders fastened by the fitting connection are integrated, and the surface strength of the cylinder is increased, and the cylinder has high strength with little bending or deformation displacement due to torsion or external force. 2) A freely contractible linked cylinder body; 2) The freely contractible linked cylinder body described in 1) above, in which the freely expandable linked cylinder body is composed of a total of three cylinder bodies, one outermost cylinder body, one intermediate cylinder body, and one innermost cylinder body; 3) The freely expandable linked cylinder body described in 1) or 2) above, in which the inner taper portion X, Z and the outer taper portion Y, W are formed by fixing the inner taper member XB, ZB and the outer taper member YB, WB, which are manufactured separately from the cylinder body and have the same shape and dimensions as the inner taper portion or the outer taper portion, to the inner or outer peripheral surface of the cylinder body S near the opening edge of the cylinder body S having a uniform thickness, with screws or adhesive; 4) The freely expandable linked cylinder body having the structure described in 1) or 2) above is used as a freely expandable outer cylinder for a hole-drilling device. and a rotating device for rotating the inner rod. The inner rod is provided at the tip of the inner rod, and is capable of drilling a circular hole having a diameter equal to or larger than the outer diameter of the outer cylinder. The inner rod is provided at the tip of the inner rod, and is connected to a linking section for linking the movement of the inner rod in the drilling direction with the tip of the outer cylinder, so that the length of the outer cylinder can be automatically extended or shortened according to the length of the inner rod. A drilling device characterized in that a chain body is used as an expandable outer cylinder of a drilling device, and the base end side of the outer cylinder is fixed to a fixed mechanical device at the base end side or to a fixed object on the drilling ground or surface side, an inner rod whose length can be expanded or contracted by connecting and disconnecting multiple rods is arranged in the center of the expandable outer cylinder, a rotating device is provided to rotate the inner rod, an inner bit is provided at the tip of the inner rod which enables circular drilling of holes with a diameter equal to or larger than the outer diameter of the outer cylinder, and a linking part is provided to link the movement of the inner rod in the drilling direction with the tip of the outer cylinder, and the length of the outer cylinder can be automatically expanded or contracted according to the length of the inner rod.
6) A plurality of cylindrical bodies having a uniform wall thickness, each of which is open at both its base end and its tip end, and each of which has a different outer diameter, can be nested so that the larger outer diameter of each cylindrical body is on the outside, and all of the cylindrical bodies can be compressed to fit within the maximum length of the cylindrical bodies, and the cylindrical bodies are fitted together so that they can slide relative to each other.
Further, the outer diameter of the fitted cylindrical body is reduced in a predetermined width from the base end opening edge of the outermost cylindrical body toward the tip opening, forming a reduced diameter portion SK,
The innermost cylinder, which is the innermost part of the fitted cylinder, has an expanded diameter portion KK in which the outer diameter of the cylinder of a predetermined width increases from the tip side opening edge toward the base end,
The intermediate cylinder MS, which is one or more cylinders fitted between the fitted outermost cylinder and the fitted innermost cylinder, is provided with a reduced diameter section MSK in which the outer diameter of the cylinder of a predetermined width from the base end opening edge toward the tip opening decreases in the direction toward the base end, and is structured as an expanded diameter section MKK in which the outer diameter of the cylinder of a predetermined width from the tip opening edge toward the base end increases toward the tip,
By pulling the outermost cylinder of the fitted cylinder in the tip direction and the innermost cylinder in the base direction in directions away from each other, the reduced diameter portion MSK and the expanded diameter portion MKK of the outermost cylinder, intermediate cylinder, and innermost cylinder are fitted together on their surfaces, and the base end and tip end portions of two radially adjacent cylinders are fitted together and connected to form a long chain of cylinders, and the adjacent cylinders form a monocoque structure in which multiple cylinders fastened by the fitting connection are integrated, thereby increasing the surface strength of the cylinders and reducing bending and deformation displacement due to twisting and external forces of the cylinders, resulting in high strength.
7) A drilling device characterized in that an expandable cylindrical chain body having the structure of 6) is used as an expandable outer cylinder of a drilling device, and the base end of the outer cylinder is fixed to a fixed mechanical device or the drilling ground or a fixed object on the ground surface at the base end, an inner rod whose length can be expanded or contracted by connecting and detaching multiple rods is arranged in the center of the tube of the expandable outer cylinder body, a rotating device is provided for rotating the inner rod, an inner bit is provided at the tip of the inner rod that enables circular hole drilling with a diameter larger than the outer diameter of the outer cylinder, and a linking part is provided that links the movement of the inner rod in the drilling direction with the tip of the outer cylinder, so that the length of the outer cylinder can automatically be expanded or contracted according to the length of the inner rod .

Claims (6)

基端側とその反対側の先端側の両端を開口し且つ筒外径の径寸法が異なる複数の筒体を、その筒外径が大きい方が外側となるように入れ子状態にしかも前記筒体の最大長さの寸法に全て収まる圧縮された状態にでき、且つ筒体同士が互に摺動可能に嵌装されたものとし、
更に嵌装した前記筒体の最外側となる最外筒体ではその基端側開口縁から先端開口に向けての所定巾の筒内周面に筒体の筒肉厚が基端方向に従って筒中心方向に向かって増大する内テーパー部Ｘを設けた構造とし、
嵌装した前記筒体の最内側となる最内筒体ではその先端側開口縁から基端に向って所定巾の筒外周面に先端に従って筒体の筒肉厚が筒半径方向に向けて増大する外テーパー部Ｙを設けた構造とし、
又嵌装した前記最外筒体と前記最内筒体との中間に嵌装される１個又は複数個の筒体である中間筒体では、基端側開口縁から先端開口に向けての所定巾の筒内周面に筒肉厚が基端方向に従って筒中心方向に向かって増大する内テーパー部Ｚを設けしかも先端側開口縁から基端に向けての所定巾の筒外周面に先端に従って筒体の筒肉厚が筒半径方向に向けて増大する外テーパー部Ｗを設けた構造とし、
嵌装した前記筒体の前記最外筒体を先端方向に及び前記最内筒体を基端方向の離反する方向に引張することで前記最外筒体・前記中間筒体・前記最内筒体の前記内テーパー部Ｘと前記外テーパー部Ｗと、又は前記外テーパー部Ｙと前記内テーパー部Ｚあるいは複数の中間筒体の前記内テーパー部Ｚと前記外テーパー部Ｗ，Ｚとが面的に嵌合して半径方向に隣り合う筒体の基端部と先端部が嵌合して連結されて長い筒体連鎖体となり、併せて隣り合う筒体は前記嵌合連結で緊締された複数の筒体が一体化したモノコック構造となって筒体の面強度が高くなり、筒体の捩じり・外力に対して屈曲・変形変位が少ない高い強度となる、伸縮自在な筒体連鎖体。 A plurality of cylindrical bodies each having an opening at both the base end side and the tip end side on the opposite side and different diameters of the cylindrical outer diameters can be nested so that the larger diameter of the cylindrical bodies is on the outside, and can be compressed so that all of the cylindrical bodies fit within the maximum length dimension of the cylindrical bodies, and the cylindrical bodies are fitted together so as to be slidable relative to each other.
Furthermore, an outermost cylinder, which is the outermost of the fitted cylinder, is provided with an inner tapered portion X on the inner peripheral surface of the cylinder having a predetermined width from the base end opening edge toward the tip opening, in which the cylinder wall thickness of the cylinder increases toward the center of the cylinder along the base end direction,
The innermost cylinder, which is the innermost of the fitted cylinder, is provided with an outer tapered portion Y on the outer circumferential surface of a given width from the tip end opening edge toward the base end, in which the thickness of the cylinder increases in the radial direction of the cylinder toward the tip end,
In addition, the intermediate cylinder, which is one or more cylinders fitted between the fitted outermost cylinder and the fitted innermost cylinder, is structured such that an inner tapered section Z is provided on the inner peripheral surface of the cylinder with a predetermined width from the base end opening edge toward the tip opening, where the cylinder thickness increases toward the center of the cylinder along the base end direction, and an outer tapered section W is provided on the outer peripheral surface of the cylinder with a predetermined width from the tip opening edge toward the base end, where the cylinder thickness of the cylinder increases toward the radial direction of the cylinder along the tip,
By pulling the outermost cylinder of the fitted cylinder in the tip direction and the innermost cylinder in the base direction away from each other, the inner taper portion X and the outer taper portion W of the outermost cylinder, the intermediate cylinder and the innermost cylinder, or the outer taper portion Y and the inner taper portion Z of each of the intermediate cylinders, or the inner taper portion Z and the outer taper portions W and Z of each of the intermediate cylinders, are fitted together on a surface basis, and the base ends and tip ends of radially adjacent cylinders are fitted together and connected to form a long chain of cylinders, and the adjacent cylinders have a monocoque structure in which the multiple cylinders fastened by the fitting connection are integrated, thereby increasing the surface strength of the cylinders and providing high strength with little bending or deformation displacement due to torsion or external force of the cylinders. 前記の伸縮自在な筒体連鎖体が、最外筒体１個と，中間筒体１個と，最内筒体１個の計３個の筒体で構成された請求項１記載の伸縮自在な筒体連鎖体。 The stretchable cylinder chain of claim 1, which is made up of a total of three cylinders: one outermost cylinder, one intermediate cylinder, and one innermost cylinder. 前記内テーパー部Ｘ，Ｚと外テーパー部Ｙ，Ｗが、筒体とは別体として前記内テーパー部又は外テーパー部と同じ形状寸法に製作された内テーパー部材ＸＢ，ＺＢと外テーパー部材ＹＢ，ＷＢとを肉厚が均等厚な筒体Ｓの開口縁近くの筒体の内周面、又は外周面にネジ、又は接着剤で固着されて形成された前記請求項１又は２記載の、伸縮自在な筒体連鎖体 The stretchable cylinder chain according to claim 1 or 2, in which the inner taper section X, Z and the outer taper section Y, W are formed by fixing the inner taper member XB, ZB and the outer taper member YB, WB, which are manufactured separately from the cylinder to the same shape and dimensions as the inner taper section or the outer taper section, to the inner or outer peripheral surface of the cylinder S near the opening edge of the cylinder with a uniform thickness, with screws or adhesive. 前記請求項１，２又は３記載の構造の伸縮自在な筒体連鎖体を削孔装置の伸縮自在な外筒として使用し、しかも同外筒の基端側は基端側にある固定された機械装置又は削孔地盤側あるいは地表側固定物に固定し、前記伸縮自在な外筒の筒中心部に複数のロッドの連結と取り外しによって長さが伸縮可能なインナーロッドを配置し、同インナーロッドを回動させる回転装置を設け、同インナーロッドの先端に前記外筒の外径以上の円形削孔を可能とするインナービットを設けるとともに、前記インナーロッドの削孔方向の移動を前記外筒の先端部と連動させる連動部を備え、インナーロッドのロッド長さに応じて前記外筒の長さも自動的に伸縮できるようにしたことを特徴とする、削孔装置。 A drilling device characterized in that the telescopic chain of cylinders of the structure described in claim 1, 2 or 3 is used as a telescopic outer cylinder of a drilling device, the base end of the outer cylinder is fixed to a fixed machine device at the base end or to a fixed object on the drilling ground or surface side, an inner rod whose length can be extended or contracted by connecting and disconnecting multiple rods is arranged in the center of the telescopic outer cylinder, a rotating device is provided to rotate the inner rod, an inner bit is provided at the tip of the inner rod that enables circular drilling of holes with a diameter equal to or larger than the outer diameter of the outer cylinder, and a linking part is provided to link the movement of the inner rod in the drilling direction with the tip of the outer cylinder, and the length of the outer cylinder can be automatically extended or contracted according to the length of the inner rod. 筒体の肉厚が均一な筒体の基端側とその反対の先端側の両端を開口し且つ筒外径の径寸法が異なる複数の筒体を、その筒外径が大きい方が外側となるように入れ子状態にしかも前記筒体の最大長さの寸法内に全ての筒体が収まる圧縮された状態にでき、且つ筒体同士が互に摺動可能に嵌装されたものであり、
更に嵌装した前記筒体の最外側となる最外筒体の基端側開口縁から先端開口に向けての所定巾の筒体の外径が基端方向に従って減少する縮径部ＳＫとした構造とし、
嵌装した前記筒体の最内側となる最内筒体の先端側開口縁から基端に向って所定巾の筒体の筒外径が先端方向に従って増大する拡径部ＫＫとした構造とし、
又嵌装した前記最外筒体と前記最内筒体との中間に嵌装される１個又は複数個の筒体である中間筒体ＭＳは、基端側開口縁から先端開口に向けての所定巾の筒体の外径が基端方向に従って減少する縮径部ＭＳＫを設けしかも先端側開口縁から基端に向けての所定巾の筒体の外径を先端に従って筒体の筒外径が増大する拡径部ＭＫＫとした構造とし、
嵌装した前記筒体の前記最外筒体を先端方向に及び前記最内筒体を基端方向に互いに離反する方向に引張することで前記最外筒体・中間筒体・最内筒体の前記縮径部ＭＳＫと前記拡径部ＭＫＫとが面的に嵌合して半径方向に隣り合う二つの筒体の基端部と先端部が嵌合して連結されて長い筒体連鎖体となり、併せて隣り合う筒体は前記嵌合連結で緊締された複数の筒体が一体化したモノコック構造となって筒体の面強度が高くなり、筒体の捩じり・外力に対して屈曲・変形変位が少なくなり高い強度となる、伸縮自在な筒体連鎖体。 A plurality of cylindrical bodies having a uniform wall thickness, both ends of which are open at the base end side and the opposite tip end side, and having different outer diameters, can be nested so that the larger outer diameters are on the outside, and all of the cylindrical bodies can be compressed to fit within the maximum length dimension of the cylindrical bodies, and the cylindrical bodies are fitted together so that they can slide relative to each other.
Further, the outer diameter of the fitted cylindrical body is reduced in a predetermined width from the base end opening edge of the outermost cylindrical body toward the tip opening, forming a reduced diameter portion SK,
The innermost cylinder, which is the innermost part of the fitted cylinder, has an expanded diameter portion KK in which the outer diameter of the cylinder of a predetermined width increases from the tip side opening edge toward the base end,
The intermediate cylinder MS, which is one or more cylinders fitted between the fitted outermost cylinder and the fitted innermost cylinder, is provided with a reduced diameter section MSK in which the outer diameter of the cylinder of a predetermined width from the base end opening edge toward the tip opening decreases in the direction toward the base end, and is structured as an expanded diameter section MKK in which the outer diameter of the cylinder of a predetermined width from the tip opening edge toward the base end increases toward the tip,
By pulling the outermost cylinder of the fitted cylinder toward the tip end and the innermost cylinder toward the base end in directions away from each other, the reduced diameter portion MSK and the expanded diameter portion MKK of the outermost cylinder, intermediate cylinder and innermost cylinder are fitted together on their surfaces, and the base end and tip end portions of two radially adjacent cylinders are fitted together and connected to form a long chain of cylinders, and the adjacent cylinders form a monocoque structure in which multiple cylinders fastened by the fitting connection are integrated, thereby increasing the surface strength of the cylinders and reducing bending and deformation displacement due to twisting and external forces of the cylinders, resulting in high strength, in an expandable chain of cylinders. 前記請求項５の構造の伸縮自在な筒体連鎖体を削孔装置の伸縮自在な外筒として使用し、しかも同外筒の基端側は基端側にある固定された機械装置又は削孔地盤あるいは地表側固定物に固定し、同伸縮自在な外筒体の筒中心部に複数のロッドの連結と取り外しによって長さが伸縮可能なインナーロッドを配置し、同インナーロッドを回動させる回転装置を設け、同インナーロッドの先端に前記外筒の外径以上の円形削孔を可能とするインナービットを設けるとともに、前記インナーロッドの削孔方向の移動を前記外筒の先端部と連動させる連動部を備え、インナーロッドのロッド長さに応じて前記外筒の長さも自動的に伸縮できるようにしたことを特徴とする、削孔装置。 The drilling device is characterized in that the telescopic cylinder chain structure of claim 5 is used as a telescopic outer cylinder of a drilling device, the base end of the outer cylinder is fixed to a fixed machine device at the base end, or to the drilling ground or a fixed object on the ground surface, an inner rod whose length can be extended or retracted by connecting and disconnecting multiple rods is arranged in the center of the telescopic outer cylinder, a rotating device is provided to rotate the inner rod, an inner bit is provided at the tip of the inner rod that enables circular drilling of holes larger than the outer diameter of the outer cylinder, and a linking part is provided to link the movement of the inner rod in the drilling direction with the tip of the outer cylinder, and the length of the outer cylinder can be automatically extended or retracted according to the length of the inner rod.

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