JP3163280B2 - Propulsion body for propulsion method - Google Patents
Propulsion body for propulsion methodInfo
- Publication number
- JP3163280B2 JP3163280B2 JP7562198A JP7562198A JP3163280B2 JP 3163280 B2 JP3163280 B2 JP 3163280B2 JP 7562198 A JP7562198 A JP 7562198A JP 7562198 A JP7562198 A JP 7562198A JP 3163280 B2 JP3163280 B2 JP 3163280B2
- Authority
- JP
- Japan
- Prior art keywords
- propulsion
- propulsion member
- end side
- members
- connecting portion
- 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.)
- Expired - Fee Related
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガス管、ケーブル
管、水道管などを地中に敷設する地中穴を形成するため
の推進工法用推進体、詳しくは、推進ヘッド、及び、こ
の推進ヘッドの後側に連設される推進部材群によって構
成される推進工法用推進体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion body for a propulsion method for forming an underground hole for laying a gas pipe, a cable pipe, a water pipe or the like in the ground. The present invention relates to a propulsion body for a propulsion method constituted by a propulsion member group continuously provided on the rear side of a head.
【０００２】[0002]
【従来の技術】上記した推進工法用推進体として、従
来、たとえば特開平８−３２６４７２号公報に示される
ものがあった。すなわち、先端側に雄ネジ部を有する前
側推進管の後端部に備えられた球面嵌合部と、後端側に
雌ネジ部を有する後側推進管の前端部に備えられた球状
嵌合部と、球面嵌合部に螺着するとともに先端側が球状
嵌合部に入り込むように構成した連結ピンとにより、前
記前側推進管と後側推進管とをこれらの軸芯に直行する
方向の軸芯まわりで相対揺動するように連結して一つの
推進部材を構成し、前側推進管及び後側推進管の軸芯方
向に並ぶ複数個の推進部材の隣接し合う推進部材どうし
を前記雄ネジ部と雌ネジ部とによって連結して推進体を
構成するようになったものがあった。つまり、前記推進
部材の複数個を連結して推進部材群を構成する。各推進
部材において前側推進管と後側推進管とが相対揺動する
軸芯により、推進部材群が推進計画線に沿って屈曲して
いくことを可能にするための屈曲点を形成するようにな
ったものであった。2. Description of the Related Art As a propulsion body for the above-mentioned propulsion method, there has hitherto been one disclosed in, for example, JP-A-8-326472. That is, the spherical fitting provided at the rear end of the front propulsion pipe having the male thread on the front end side and the spherical fitting provided at the front end of the rear propulsion pipe having the female thread at the rear end. Part and a connecting pin screwed to the spherical fitting part and configured such that the front end side enters the spherical fitting part, so that the front propulsion pipe and the rear propulsion pipe are aligned in a direction perpendicular to these axes. A plurality of propulsion members arranged in the axial direction of the front propulsion pipe and the rear propulsion pipe are connected to each other so as to swing relative to each other to form a single propulsion member. And a female screw portion to form a propulsion body. That is, a plurality of the propulsion members are connected to form a propulsion member group. The propulsion member and the propulsion tube in each propulsion member form a bending point for enabling the propulsion member group to bend along the propulsion planning line by the axis of relative swing between the propulsion member and the rear propulsion tube. Had become something.
【０００３】[0003]
【発明が解決しようとする課題】推進体を大半径で屈曲
する推進計画線に沿わせて推進させていく際には、推進
部材群における屈曲点どうしの間隔いわゆる屈曲点間隔
が比較的長くても、推進体を推進計画線に比較的精度よ
く沿わせて屈曲させられるが、推進体を小半径で屈曲す
る推進計画線に沿わせて推進させていく際には、推進部
材群における屈曲点間隔が短い方が推進体を推進計画線
に精度よく沿わせて屈曲させられる。また、推進部材群
における屈曲点間隔が短い場合よりも長い場合の方が、
推進体の推進反力などに起因する蛇行を発生しにくくし
たり、少なく抑制したりしながら推進体を推進させてい
ける。また、推進計画線の屈曲半径に適応した屈曲点間
隔を備える推進部材群を採用すれば、推進ヘッドに作用
する推進反力で推進部材群が限界まで屈曲するようにし
ながら推進体を推進させていく推進工法を採用しても、
推進体を推進計画線に精度よく沿わせて屈曲させながら
推進させられる。すなわち、推進ヘッドの向き調節な
ど、推進部材群の屈曲半径を調節するための制御を行わ
なくとも、推進体に単に押し込み力を付与するだけで操
作簡単に推進部材群が所望の屈曲半径で屈曲していく。
ところが、上記した従来の推進体の場合、推進部材群に
おける前記屈曲点間隔は、一つの推進部材が備える長さ
によって決まっていた。このため、推進計画線の屈曲半
径が異なる場合、この屈曲半径に適応した前記屈曲点間
隔を備える推進体を採用し、推進計画線の屈曲半径の大
小いかんにかかわらず、推進体を推進計画線に精度よく
沿わせて屈曲させながら、蛇行しにくくしながら推進さ
せていくとか、推進体に単に押し込み力を付与するだけ
で操作簡単に推進体を推進計画線に精度よく沿わせなが
ら推進させていくには、長さが異なる各種の推進部材を
準備する必要があった。本発明の目的は、比較的数少な
い種類の推進部材を準備するだけで屈曲半径が異なる各
種の推進計画線に精度よく沿う地中穴を形成したり、そ
の地中穴を操作簡単に形成したりできる推進工法用推進
体を提供することにある。When a propulsion body is propelled along a propulsion plan line that bends at a large radius, the distance between the bending points in the propulsion member group, that is, the bending point interval is relatively long. Also, the propulsion body can be bent along the propulsion planning line relatively accurately, but when the propulsion body is propelled along the propulsion planning line that bends with a small radius, the bending point in the propulsion member group The shorter the distance, the more precisely the propelling body can be bent along the propulsion planning line. Also, when the bending point interval in the propulsion member group is longer than when it is shorter,
The propulsion body can be propelled while making meandering due to the propulsion reaction force of the propulsion body difficult to occur or suppressed. In addition, if a propulsion member group having a bending point interval adapted to the bending radius of the propulsion planning line is employed, the propulsion body is propelled while the propulsion member group bends to the limit by the propulsion reaction force acting on the propulsion head. Even if you adopt a propulsion method,
The propulsion body is propelled while being bent along the propulsion plan line with high precision. That is, the propulsion member group bends at the desired bending radius simply by applying a pushing force to the propulsion body without performing control for adjusting the bending radius of the propulsion member group, such as adjusting the direction of the propulsion head. I will do it.
However, in the case of the above-described conventional propulsion body, the interval between the bending points in the propulsion member group is determined by the length of one propulsion member. For this reason, when the bending radius of the propulsion planning line is different, a propulsion body having the bending point interval adapted to this bending radius is adopted, and the propulsion body is moved regardless of the bending radius of the propulsion planning line. The propulsion can be easily made along with the propulsion plan line by simply applying a pushing force to the propulsion body while making it protrude while making it hard to meander while bending along To do this, it was necessary to prepare various propulsion members having different lengths. An object of the present invention is to form an underground hole accurately following various propulsion planning lines having different bending radii by preparing relatively few types of propulsion members, or to easily form the underground hole. It is to provide a propulsion body for a propulsion method.
【０００４】[0004]
【課題を解決するための手段】請求項１による発明の構
成、作用、効果はつぎのとおりである。The constitution, operation and effect of the invention according to claim 1 are as follows.
【０００５】〔構成〕推進ヘッド、及び、この推進ヘッ
ドの後側に連設される推進部材群によって構成される推
進工法用推進体において、前記推進部材群を構成する推
進部材として、非屈曲型の第１推進部材と、屈曲自在な
第２推進部材とを備えさせ、前記第１推進部材の先端側
及び後端側に連結部を、かつ、前記第２推進部材の先端
側及び後端側に連結部をそれぞれ備えさせ、第１推進部
材の先端側の連結部を、別の第１推進部材の後端側の連
結部にも、第２推進部材の後端側の連結部にも分離自在
に連結できるように、かつ、第１推進部材の後端側の連
結部を、別の第１推進部材の先端側の連結部にも、第２
推進部材の先端側の連結部にも分離自在に連結できるよ
うに、第１推進部材の連結部と、第２推進部材の連結部
とを構成してある。[Structure] In a propulsion body for a propulsion method comprising a propulsion head and a propulsion member group connected to the rear side of the propulsion head, a non-bending type propulsion member constituting the propulsion member group is used. A first propulsion member and a bendable second propulsion member, and a connecting portion on a front end side and a rear end side of the first propulsion member, and a front end side and a rear end side of the second propulsion member. , Each of which is provided with a connecting portion. The connecting portion on the front end side of the first propulsion member is separated into the connecting portion on the rear end side of another first propulsion member and the connecting portion on the rear end side of the second propulsion member. In order to be able to connect freely, the connecting part on the rear end side of the first propulsion member is also connected to the connecting part on the front end side of another first propulsion member.
The connection portion of the first propulsion member and the connection portion of the second propulsion member are configured so that the connection portion on the distal end side of the propulsion member can be detachably connected.
【０００６】〔作用〕複数個の第１推進部材と第２推進
部材とを、隣接し合う一対の第２推進部材どうしの間に
第１推進部材が１個ずつ入る配列にして並べ、隣接し合
う第２推進部材の先端側と第１推進部材の後端側とを連
結し、隣接し合う第２推進部材の後端側と第１推進部材
の先端側とを連結することにより、推進部材群を構成で
きる。この推進部材群の場合、隣接し合う一対の第１推
進部材どうしが第２推進部材の屈曲によって相対揺動す
る状態に連結し、各第１推進部材の前側と後側とに第２
推進部材によって屈曲点が形成されてこの屈曲点で推進
計画線に沿って屈曲していく。[Operation] A plurality of first propulsion members and a plurality of second propulsion members are arranged in an array in which one first propulsion member is inserted between a pair of adjacent second propulsion members. The propulsion member is connected by connecting the front end side of the second propulsion member and the rear end side of the first propulsion member, and connecting the rear end side of the adjacent second propulsion member and the front end side of the first propulsion member. Groups can be configured. In the case of this propulsion member group, a pair of adjacent first propulsion members are connected in a state of relatively swinging due to the bending of the second propulsion member.
A bending point is formed by the propulsion member, and the vehicle bends at the bending point along the propulsion planning line.
【０００７】また、複数個の第１推進部材と第２推進部
材とを、隣接し合う一対の第２推進部材どうしの間に第
１推進部材が２個ずつ入る配列にして並べ、隣接し合う
一対の第１推進部材の一方の後端側と他方の先端側とを
連結し、隣接し合う第２推進部材の先端側と第１推進部
材の後端側とを連結し、隣接し合う第２推進部材の後端
側と第１推進部材の先端側とを連結することにより、推
進部材群を構成できる。この推進部材群の場合、複数個
の第１推進部材のうちの２個ずつが相対揺動しないよう
に直結して１個の第１推進部材よりも長尺の非屈曲型推
進部材を形成するとともに、隣接し合う長尺非屈曲型推
進部材どうしが第２推進部材の屈曲によって相対揺動す
る状態に連結し、各長尺非屈曲型推進部材の前側と後側
とに第２推進部材によって屈曲点が形成されてこの屈曲
点で推進計画線に沿って屈曲していく。すなわち、複数
個の第１推進部材と第２推進部材とを連結することによ
って推進部材群を構成できる。そして、隣接し合う一対
の第２推進部材どうしの間に入れる第１推進部材の数量
を調節することにより、推進部材群における屈曲点間隔
が長短異なるものになる。Further, a plurality of first propulsion members and a plurality of second propulsion members are arranged in an array in which two first propulsion members enter between a pair of adjacent second propulsion members, and are adjacent to each other. One rear end side of the pair of first propulsion members is connected to the other front end side, and the front end side of the adjacent second propulsion member and the rear end side of the first propulsion member are connected, and By connecting the rear end side of the second propulsion member and the front end side of the first propulsion member, a propulsion member group can be formed. In the case of this propulsion member group, two of the plurality of first propulsion members are directly connected so as not to relatively swing to form a non-flexible propulsion member longer than one first propulsion member. At the same time, the adjacent long non-flexible propulsion members are connected to each other in a state of relatively swinging by bending of the second propulsion member, and the front and rear sides of each long non-flexible propulsion member are connected by the second propulsion member. A bending point is formed, and the vehicle bends at the bending point along the propulsion plan line. That is, a propulsion member group can be configured by connecting the plurality of first propulsion members and the second propulsion members. By adjusting the number of the first propulsion members inserted between the pair of adjacent second propulsion members, the bending point intervals in the propulsion member group differ in length.
【０００８】〔効果〕屈曲半径が異なる推進計画線に沿
わせて地中穴を形成する場合でも、第１推進部材と第２
推進部材とを連結配列が適切になるように調節して連結
することにより、推進計画線の屈曲半径に極力適応した
屈曲点間隔を備える推進部材群が得られ、推進体を推進
計画線に精度よく沿わせながら、蛇行しにくくしながら
推進させたり、推進体に押し込み力を与えるだけで操作
簡単に推進体を推進計画線に精度よく沿わせながら推進
させたりして推進計画線に極力合致する仕上がり精度の
よい地中穴を形成できる。しかも、推進部材として第１
推進部材と第２推進部材との２種類を準備するだけで済
み、経済面で有利にできる。[Effect] Even if an underground hole is formed along a propulsion plan line having a different bending radius, the first propulsion member and the second
By adjusting the connection with the propulsion members so that the connection arrangement is appropriate, a propulsion member group having a bending point interval adapted as much as possible to the bending radius of the propulsion planning line can be obtained, and the propulsion body can be accurately aligned with the propulsion planning line. Propelling while keeping it in good shape, making it difficult to meander, or simply pushing the propulsion body while pushing it along with the propulsion plan line with good precision so as to match the propulsion plan line as much as possible Underground holes with good finishing accuracy can be formed. Moreover, the first as a propulsion member
It is sufficient to prepare only two types of the propulsion member and the second propulsion member, which is economically advantageous.
【０００９】請求項２による発明の構成、作用、効果は
つぎのとおりである。The structure, operation and effect of the invention according to claim 2 are as follows.
【００１０】〔構成〕請求項１による発明の構成におい
て、前記第１推進部材の先端側の連結部、前記第１推進
部材の後端側の連結部、前記第２推進部材の先端側の連
結部、及び、前記第２推進部材の後端側の連結部それぞ
れの連結仕様を同一にしてある。In the structure according to the first aspect of the present invention, a connecting portion on a front end side of the first propulsion member, a connecting portion on a rear end side of the first propulsion member, and a connecting portion on a front end side of the second propulsion member. The connection specifications of the part and the connection part on the rear end side of the second propulsion member are the same.
【００１１】〔作用〕第１推進部材の連結部と第２推進
部材の連結部とを直接に連結したり、第１推進部材の連
結部どうしを直接に連結して１個の第１推進部材よりも
長尺の非屈曲型推進部材を形成したりするものである。
すなわち、第１推進部材と第２推進部材も、第１推進部
材どうしも連結専用の部材を使用しないで連結して推進
部材群を構成するものである。[Operation] The first propulsion member is directly connected to the connection portion of the first propulsion member and the connection portion of the second propulsion member, or the first propulsion member is directly connected to the connection portions of the first propulsion member. For example, a non-flexible propulsion member that is longer than that of the propulsion member may be formed.
In other words, the first propulsion member and the second propulsion member are also connected to each other without using a dedicated connection member to form a propulsion member group.
【００１２】〔効果〕連結専用の部材を要しないで第１
推進部材と第２推進部材との２種類の推進部材を準備す
るだけで安価に屈曲点間隔が異なる推進部材群を構成
し、屈曲半径が異なる推進計画線に精度よく沿った地中
穴を操作簡単に形成できる。[Effect] The first member can be obtained without using a member dedicated to connection.
By simply preparing two types of propulsion members, a propulsion member and a second propulsion member, a propulsion member group with different bend point intervals can be constructed at low cost and operate underground holes accurately along propulsion planning lines with different bend radii. Easy to form.
【００１３】[0013]
【発明の実施の形態】図１及び図３に示すように、先導
体２を先端側に備える推進ヘッド１と、この推進ヘッド
１の後端側に連設するとともに複数本の第１推進部材１
０と第２推進部材２０とで成る推進部材群Ａとにより、
推進体を構成してある。この推進体は、ガス管、ケーブ
ル管、水道管などを地中に敷設するための地中穴を図１
及び図３に示す推進工法によって形成するものであり、
詳しくはつぎの如く構成してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 3, a propulsion head 1 provided with a leading conductor 2 at a front end thereof and a plurality of first propulsion members connected to the rear end of the propulsion head 1 are provided. 1
0 and the second propulsion member 20, a propulsion member group A,
A propulsion body is configured. This propulsion unit has an underground hole for laying gas pipes, cable pipes, water pipes, etc. in the ground.
And the propulsion method shown in FIG.
Specifically, it is configured as follows.
【００１４】図５に示すように、前記推進ヘッド１は、
前記先導体２が一端側に連結している筒状の推進ヘッド
本体３の他端側に、メねじ筒体で成る連結部４を備えさ
せるとともに、先導体２を推進ヘッド本体３の軸芯Ｘま
わりで推進ヘッド本体３に対して回動操作する油圧シリ
ンダ装置５を推進ヘッド本体３の内部に設けることによ
って構成してある。前記連結部４は、推進ヘッド本体３
に同芯状に連結している筒型ねじホルダー６に前記軸芯
Ｘまわりで回動自在に支持させて、推進ヘッド本体３に
対して回転操作できるようにしてある。As shown in FIG. 5, the propulsion head 1 comprises:
At the other end of the cylindrical propulsion head body 3 to which the leading conductor 2 is connected at one end, a connecting portion 4 formed of a female threaded cylinder is provided. A hydraulic cylinder device 5 that rotates with respect to the propulsion head body 3 around X is provided inside the propulsion head body 3. The connecting portion 4 is provided on the propulsion head main body 3.
A cylindrical screw holder 6 connected concentrically to the propulsion head body 3 is rotatably supported around the axis X so that the propulsion head body 3 can be rotated.
【００１５】図６に示すように、前記第１推進部材１０
は、先端側にオねじ筒体で成る第１連結部１１を備える
筒型の推進部材本体１２の後端側にメネジ筒体で成る第
２連結部１３を備えさせて構成してある。前記第１連結
部１１を構成するオねじ筒体のねじのピッチ、山径、谷
径などの仕様を、推進ヘッド１の前記連結部４を構成す
るメねじ筒体のねじの仕様と同一にしてある。前記第２
連結部１３を推進部材本体１２に同芯状に連結している
筒型ねじホルダー１４に回動自在に支持させて、推進部
材本体１２に対して回転操作できるように構成するとと
もに、この第２連結部１３を構成するメねじ筒体のねじ
のピッチ、山径、谷径などの仕様を、第１連結部１１を
構成するオねじ筒体のねじの仕様と同一にしてある。As shown in FIG. 6, the first propulsion member 10
The cylindrical propulsion member main body 12 is provided with a second connection portion 13 formed of a female threaded cylinder at the rear end side of the cylindrical propulsion member main body 12 provided with a first connection portion 11 formed of an externally threaded cylinder at the distal end side. The specifications such as the pitch, crest diameter, and valley diameter of the thread of the male threaded cylinder forming the first connection portion 11 are the same as the specifications of the screw of the female threaded cylinder forming the connection portion 4 of the propulsion head 1. It is. The second
The connecting portion 13 is rotatably supported by a cylindrical screw holder 14 connected concentrically to the propulsion member main body 12 so as to be rotatable with respect to the propulsion member main body 12. The specifications such as the thread pitch, crest diameter, and valley diameter of the female threaded cylinder forming the connecting portion 13 are the same as those of the male threaded cylinder forming the first connecting portion 11.
【００１６】すなわち、第１推進部材１０は、推進反力
が作用しても容易には屈曲しないように非屈曲型に構成
するとともに、推進ヘッド１の前記油圧シリンダ装置５
に接続する油圧配管を内部に通せるように筒型に構成し
てある。また、先端側の第１連結部１１を別の第１推進
部材１０の後端側の第２連結部１３に分離自在に連結す
るとか、後端側の第２連結部１３を別の第１推進部材１
０の先端側の第１連結部１１に分離自在に連結すること
により、複数個の第１推進部材１０どうしを連結して１
個の第１推進部材１０よりも長尺の非屈曲型推進部材を
形成できるように構成してある。That is, the first propulsion member 10 is of a non-bending type so that it does not bend easily even when a propulsion reaction force acts, and the hydraulic cylinder device 5 of the propulsion head 1 is formed.
It is formed in a cylindrical shape so that a hydraulic pipe connected to the can be passed through the inside. Also, the first connecting portion 11 on the front end side is detachably connected to the second connecting portion 13 on the rear end side of another first propulsion member 10, or the second connecting portion 13 on the rear end side is connected to another first connecting portion 13. Propulsion member 1
The first propulsion members 10 are connected to each other by being detachably connected to the first connection portion 11 on the distal end side of the first propulsion member 10.
It is configured so that a non-bending type propulsion member longer than the first propulsion members 10 can be formed.
【００１７】図７に示すように、前記第２推進部材２０
は、先端側にオねじ筒体で成る第１連結部２１を備える
前側筒体２２の後端側と、後端側にメねじ筒体で成る第
２連結部２３を備える後側筒体２４の先端側とを、前側
筒体２２に螺合するとともに止めねじ２５によって外れ
止めされた継ぎ手２６で連結することによって構成して
ある。As shown in FIG. 7, the second propulsion member 20
The rear cylinder 24 includes a rear end side of a front cylinder 22 having a first coupling portion 21 formed of a male threaded cylinder at a front end side and a second coupling portion 23 formed of a female threaded cylinder at a rear end side. Is connected to a front side cylinder 22 by a joint 26 screwed to the front side cylinder body 22 and detached by a set screw 25.
【００１８】前記第１連結部２１を構成するオねじ筒体
のねじのピッチ、山径、谷径などの仕様を、推進ヘッド
１の前記連結部４を構成するメねじ筒体、及び、第１推
進部材１０の後端側の第２連結部１３を構成するメねじ
筒体のねじの仕様と同一にしてある。前記第２連結部２
３を後側筒体２４に同芯状に連結している筒型ねじホル
ダー２７に回動自在に支持させて、後側筒体２４に対し
て回転操作できるように構成するとともに、この第２連
結部２３を構成するメねじ筒体のねじのピッチ、山径、
谷径などの仕様を、第１推進部材１０の先端側の第１連
結部１１を構成するオねじ筒体の仕様と同一にしてあ
る。The specifications such as the pitch, crest diameter, and valley diameter of the thread of the externally threaded cylindrical body constituting the first connecting portion 21 are determined according to the specifications of the female threaded cylindrical body constituting the connecting portion 4 of the propulsion head 1. The specifications of the screw of the female threaded cylinder constituting the second connecting portion 13 on the rear end side of the one propulsion member 10 are the same. The second connecting part 2
3 is rotatably supported by a cylindrical screw holder 27 concentrically connected to the rear cylinder 24 so as to be rotatable with respect to the rear cylinder 24. The thread pitch, thread diameter,
The specifications such as the valley diameter are the same as the specifications of the male threaded cylinder constituting the first connecting portion 11 on the distal end side of the first propulsion member 10.
【００１９】前記継ぎ手２６を、前側筒体２２から突出
する端部に外周面が球面状の球状嵌合部２６ａを有する
球面継ぎ手に作成するとともに、後側筒体２４の内周面
側に備えさせた球面嵌合部２４ａに前記球状嵌合部２６
ａによって回動自在に内嵌係合するように構成してあ
る。前記継ぎ手２６の前記球状嵌合部２６ａの両横側で
前記後側筒体２４に螺着してある連結ピン２８の先端側
を前記球状嵌合部２６ａに相対回動自在に係入させてあ
る。これにより、前側筒体２２と後側筒体２４とは継ぎ
手２６によっては両筒体２２，２４の軸芯に対して直行
する方向の全ての軸芯まわりで相対揺動するように連結
するが、連結ピン２８が両筒体２２，２４に対する揺動
規制手段となり、前側筒体２２と後側筒体２４との相対
揺動を、両筒体２２，２４の軸芯に直行する方向の軸芯
のうちの両連結ピン２８，２８の軸芯上に位置する軸芯
Ｙのみのまわりで相対揺動するものに規制するようにし
てある。The joint 26 is formed as a spherical joint having a spherical fitting portion 26a having a spherical outer peripheral surface at an end protruding from the front cylinder 22 and provided on the inner peripheral surface side of the rear cylinder 24. The spherical fitting portion 26 is attached to the spherical fitting portion 24a.
a so as to be rotatably engaged with the inside. The distal end side of a connection pin 28 screwed to the rear cylinder 24 on both lateral sides of the spherical fitting portion 26a of the joint 26 is relatively rotatably engaged with the spherical fitting portion 26a. is there. Thereby, the front cylinder 22 and the rear cylinder 24 are connected by the joint 26 so as to relatively swing around all axes in a direction perpendicular to the axes of the two cylinders 22 and 24. The connecting pin 28 serves as a swing restricting means for the two cylinders 22, 24, and causes the relative swing between the front cylinder 22 and the rear cylinder 24 to be perpendicular to the axis of the two cylinders 22, 24. Among the cores, the shaft is restricted so as to relatively swing around only the axis Y located on the axis of both connecting pins 28, 28.
【００２０】すなわち、第２推進部材２０は、推進ヘッ
ド１の前記油圧シリンダ装置５に接続する油圧配管を内
部に通せるように筒型に構成してある。さらに、先端側
の第１連結部２１と後端側の第２連結部２３との間で軸
芯Ｙまわりで折れ曲がるように屈曲自在型に構成し、先
端側の第１連結部２１を第１推進部材１０の後端側の第
２連結部１３に分離自在に連結するとか、後端側の第２
連結部２３を第１推進部材１０の先端側の第１連結部１
１に分離自在に連結することにより、第１推進部材１０
どうしを連結して推進部材群Ａを構成するとともに、推
進部材群Ａに前記軸芯Ｙで成る屈曲点を形成するように
構成してある。また、先端側の第１連結部２１を推進ヘ
ッド１の前記連結部４に連結することにより、推進部材
群Ａを推進ヘッド１に連結するように構成してある。That is, the second propulsion member 20 is formed in a cylindrical shape so that a hydraulic pipe connected to the hydraulic cylinder device 5 of the propulsion head 1 can be passed through the inside. Further, the first connecting portion 21 on the front end side is configured to be bendable so as to be bent around the axis Y between the first connecting portion 21 on the front end side and the second connecting portion 23 on the rear end side. The propulsion member 10 may be connected to the second connecting portion 13 on the rear end side in a detachable manner, or the second connecting portion 13 on the rear end side may be separated.
The connecting portion 23 is connected to the first connecting portion 1 on the distal end side of the first propulsion member 10.
1, the first propulsion member 10
The propulsion member group A is formed by connecting the members together, and the propulsion member group A is configured to form a bending point composed of the axis Y. The propulsion member group A is connected to the propulsion head 1 by connecting the first connection portion 21 on the distal end side to the connection portion 4 of the propulsion head 1.
【００２１】要するに、図１〜図４に示す如くして前記
地中穴を形成するように構成してある。すなわち、複数
個の第１推進部材１０と第２推進部材２０とを連結して
推進部材群Ａを構成するとともに、この推進部材群Ａを
推進ヘッド１の後側に連設して推進体を構成する。この
とき、図１及び図２に示すように、推進計画線Ｚの曲線
部分における屈曲半径Ｒが小である場合、たとえば複数
個の第１推進部材１０と第２推進部材２０とを、隣接し
合う一対の第２推進部材２０どうしの間に第１推進部材
１０が１個ずつ入る配列にして並べ、隣接し合う第２推
進部材２０の先端側と第１推進部材１０の後端側とをそ
れらの連結部２１，１３によって連結し、隣接し合う第
２推進部材２０の後端側と第１推進部材１０の先端側と
をそれらの連結部２３，１１によって連結し、推進部材
群Ａの屈曲点間隔Ｄを短くする。図３及び図４に示すよ
うに、推進計画線Ｚの曲線部分における屈曲半径Ｒが大
である場合、たとえば複数個の第１推進部材１０と第２
推進部材２０とを、隣接し合う一対の第２推進部材２０
どうしの間に第１推進部材１０が２個ずつ入る配列にし
て並べ、隣接し合う一対の第１推進部材１０の一方の後
端側と他方の先端側とをそれらの連結部１３，１１によ
って連結し、隣接し合う第２推進部材２０の先端側と第
１推進部材１０の後端側とをそれらの連結部２１，１３
によって連結し、隣接し合う第２推進部材２０の後端側
と第１推進部材１０の先端側とをそれらの連結部２３，
１１によって連結し、推進部材群Ａの屈曲点間隔Ｄを長
くする。推進計画線Ｚの曲線部分における屈曲半径Ｒが
さらに大である場合には、隣接し合う一対の第２推進部
材２０どうしの間に直結状態で入れる第１推進部材１０
の数量を多くし、推進部材群Ａの屈曲点間隔Ｄをさらに
長くする。つまり、推進計画線Ｚの曲線部分の屈曲半径
Ｒが大小異なる場合、第１推進部材１０と第２推進部材
２０の連結配列を調節し、推進部材群Ａの屈曲点間隔Ｄ
を、推進計画線Ｚの屈曲半径Ｒに適応した長さに調節す
る。In short, the underground hole is formed as shown in FIGS. That is, the plurality of first propulsion members 10 and the second propulsion members 20 are connected to form a propulsion member group A, and the propulsion member group A is connected to the rear side of the propulsion head 1 to form a propulsion body. Constitute. At this time, as shown in FIGS. 1 and 2, when the bending radius R in the curved portion of the propulsion planning line Z is small, for example, the plurality of first propulsion members 10 and the second propulsion members 20 are placed adjacent to each other. The first propulsion members 10 are arranged so as to be inserted one by one between a pair of matching second propulsion members 20, and the front end side of the adjacent second propulsion member 20 and the rear end side of the first propulsion member 10 are arranged. The rear ends of the adjacent second propulsion members 20 and the front ends of the first propulsion members 10 are connected by the connection portions 23 and 11 and connected by the connection portions 21 and 13, respectively. Shorten the bending point interval D. As shown in FIGS. 3 and 4, when the bending radius R in the curved portion of the propulsion planning line Z is large, for example, the plurality of first propulsion members 10 and the second
A pair of adjacent second propulsion members 20
The first propulsion members 10 are arranged in an array in which two of them are inserted between each other, and one rear end side and the other front end side of a pair of adjacent first propulsion members 10 are connected by the connecting portions 13 and 11. The front end side of the second propulsion member 20 and the rear end side of the first propulsion member 10 which are adjacent to each other are connected to each other by connecting portions 21 and 13 thereof.
The rear end side of the adjacent second propulsion member 20 and the front end side of the first propulsion member 10 are connected by the connecting portions 23,
11 to increase the bending point interval D of the propulsion member group A. When the bending radius R in the curved portion of the propulsion planning line Z is even larger, the first propulsion member 10 inserted directly between the pair of adjacent second propulsion members 20
Is increased, and the bending point interval D of the propulsion member group A is further increased. That is, when the bending radius R of the curved portion of the propulsion planning line Z differs in magnitude, the connection arrangement of the first propulsion member 10 and the second propulsion member 20 is adjusted, and the bending point interval D of the propulsion member group A is adjusted.
Is adjusted to a length adapted to the bending radius R of the propulsion planning line Z.
【００２２】そして、図１及び図２に示すように、道路
などの配管対象地３０に形成したピット３１から推進装
置３２によって推進体の後端側に押し込み操作力を与え
ることにより、推進体を推進計画線Ｚの推進開始位置Ｓ
に位置合わせした推進ヘッド１の方から配管対象地３０
に突入させるとともに推進させる。このとき、推進装置
３２から各第１推進部材１０及び第２推進部材２０の内
部を通って前記油圧シリンダ装置５に接続している油圧
配管を介してこの油圧シリンダ装置５を推進装置３２に
よって操作し、油圧シリンダ装置５の駆動力によって先
導体２を推進ヘッド本体３に対して回動操作して、先導
体２が有する傾斜面２ａに作用する推進反力のために推
進ヘッド１の推進方向が所望方向になるように傾斜面２
ａの向き調節を行うことにより、推進体を推進計画線Ｚ
の直線部分や曲線部分に沿わせて推進させる。推進ヘッ
ド１が推進計画線Ｚの推進終了位置Ｅに到達すると、推
進体を配管対象地３０からピット３１の方に抜き出すこ
とにより、地中穴を完成する。As shown in FIG. 1 and FIG. 2, the propulsion body is pushed from the pit 31 formed in the piping target place 30 such as a road to the rear end side of the propulsion body by the propulsion device 32 to give the propulsion body. Propulsion start position S of promotion plan line Z
From the propulsion head 1 aligned with
And promote it. At this time, the hydraulic cylinder device 5 is operated by the propulsion device 32 via a hydraulic pipe connected from the propulsion device 32 to the hydraulic cylinder device 5 through the inside of each of the first propulsion member 10 and the second propulsion member 20. Then, the tip conductor 2 is rotated with respect to the propulsion head body 3 by the driving force of the hydraulic cylinder device 5, and the propulsion direction of the propulsion head 1 due to the propulsion reaction force acting on the inclined surface 2 a of the tip conductor 2. Inclined surface 2 so that
By adjusting the direction of a, the propulsion body is moved to the propulsion planning line Z.
Propelled along the straight or curved part of. When the propulsion head 1 reaches the propulsion end position E on the propulsion planning line Z, the underground hole is completed by extracting the propulsion body from the piping target place 30 toward the pit 31.
【００２３】〔別実施形態〕第２推進部材２０として、
上記実施形態に示した如く先端側部分２２と後端側部分
２４とを相対回動自在に連結する球面継ぎ手２６と、こ
の球面継ぎ手２６による先端側部分２２と後端側部分２
４との相対揺動を規制する連結ピン２８とによって一つ
の軸芯まわり腰折れするように屈曲自在に構成したもの
を採用する他に、先端側部分２２と後端側部分２４とを
コイルスプリングなどの螺旋連結部材によって連結する
ことによって屈曲自在に構成したものを採用したり、先
端側部分２２と後端側部分２４とを連結ピンのみによっ
て枢着することによって一つの軸芯まわり腰折れするよ
うに屈曲自在に構成したものを採用して実施してもよ
い。[Alternative Embodiment] As the second propulsion member 20,
As shown in the above embodiment, the spherical joint 26 connects the distal end portion 22 and the rear end portion 24 so as to be relatively rotatable, and the distal end portion 22 and the rear end portion 2 formed by the spherical joint 26.
In addition to employing a connecting pin 28 that regulates relative swing with respect to the shaft 4, the front end portion 22 and the rear end portion 24 can be bent freely so as to bend around one axis. Or by bending the front end portion 22 and the rear end portion 24 only by a connection pin so as to bend around one axis. The present invention may be implemented by adopting a bendable structure.
【００２４】推進ヘッド１、第１推進部材１０、第２推
進部材２０として、上記実施形態に示した如く筒型に構
成したものを採用する他、中実型に構成したものを採用
して実施してもよい。As the propulsion head 1, the first propulsion member 10, and the second propulsion member 20, those having a cylindrical configuration as shown in the above-described embodiment and those having a solid configuration are employed. May be.
【図１】地中穴形成要領の説明図FIG. 1 is an explanatory view of an underground hole forming procedure.
【図２】屈曲点間隔を短くした状態の推進体の一部の側
面図FIG. 2 is a side view of a part of the propulsion body in a state in which a bending point interval is reduced.
【図３】地中穴形成要領の説明図FIG. 3 is an explanatory view of an underground hole forming procedure.
【図４】屈曲点間隔を長くした状態の推進体の一部の側
面図FIG. 4 is a side view of a part of the propulsion body in a state in which a bending point interval is increased.
【図５】推進ヘッドの一部断面状態での側面図FIG. 5 is a side view of the propulsion head in a partially sectional state.
【図６】第１推進部材の断面図FIG. 6 is a sectional view of a first propulsion member.
【図７】第２推進部材の断面図FIG. 7 is a sectional view of a second propulsion member.
１ 推進ヘッド １０ 第１推進部材 １１ 第１推進部材の先端側の連結部 １３ 第１推進部材の後端側の連結部 ２０ 第２推進部材 ２１ 第２推進部材の先端側の連結部 ２３ 第２推進部材の先端側の連結部 Ａ 推進部材群 REFERENCE SIGNS LIST 1 propulsion head 10 first propulsion member 11 distal-side connection portion of first propulsion member 13 rear-end side connection portion of first propulsion member 20 second propulsion member 21 distal-side connection portion of second propulsion member 23 second Connection part on the tip side of the propulsion member A Propulsion member group
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 幸重 兵庫県尼崎市浜１丁目１番１号 株式会 社クボタ 技術開発研究所内 (56)参考文献 特開 平10−2185（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 9/06 311 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yukishige Yamada 1-1-1 Hama, Amagasaki-shi, Hyogo Kubota Technology Development Laboratory Co., Ltd. (56) References JP-A-10-2185 (JP, A) (58) ) Surveyed field (Int.Cl. 7 , DB name) E21D 9/06 311
Claims (2)
ド（１）の後側に連設される推進部材群（Ａ）によって
構成される推進工法用推進体であって、 前記推進部材群（Ａ）を構成する推進部材として、非屈
曲型の第１推進部材（１０）と、屈曲自在な第２推進部
材（２０）とを備えさせ、 前記第１推進部材（１０）の先端側及び後端側に連結部
（１１),（１３）を、かつ、前記第２推進部材（２０）
の先端側及び後端側に連結部（２１),（２３）をそれぞ
れ備えさせ、 第１推進部材（１０）の先端側の連結部（１１）を、別
の第１推進部材（１０）の後端側の連結部（１３）に
も、第２推進部材（２０）の後端側の連結部（２３）に
も分離自在に連結できるように、かつ、第１推進部材
（１０）の後端側の連結部（１３）を、別の第１推進部
材（１０）の先端側の連結部（１１）にも、第２推進部
材（２０）の先端側の連結部（２１）にも分離自在に連
結できるように、第１推進部材（１０）の連結部（１
１),（１３）と、第２推進部材（２０）の連結部（２
１),（２３）とを構成してある推進工法用推進体。1. A propulsion body for a propulsion method, comprising a propulsion head (1) and a propulsion member group (A) connected to the rear side of the propulsion head (1), wherein the propulsion member group As a propulsion member constituting (A), a non-bend type first propulsion member (10) and a bendable second propulsion member (20) are provided, and a tip side of the first propulsion member (10) and Connecting parts (11) and (13) on the rear end side and the second propulsion member (20)
The first and second propulsion members (10) are provided with connecting portions (21) and (23) on the front end side and the rear end side, respectively. The first propulsion member (10) is connected to the rear propulsion member (10) so that the rear propulsion member (20) can be connected to the rear propulsion member (20). Separating the end-side connecting portion (13) into the connecting portion (11) on the distal end side of another first propulsion member (10) and the connecting portion (21) on the distal end side of the second propulsion member (20) The connecting portion (1) of the first propulsion member (10) can be freely connected.
1), (13) and the connecting portion (2) of the second propulsion member (20).
1) and (23), a propulsion body for a propulsion method.
結部（１１）、前記第１推進部材（１０）の後端側の連
結部（１３）、前記第２推進部材（２０）の先端側の連
結部（２１）、及び、前記第２推進部材（１０）の後端
側の連結部（２３）それぞれの連結仕様を同一にしてあ
る請求項１記載の推進工法用推進体。2. A connection part (11) on the front end side of the first propulsion member (10), a connection part (13) on a rear end side of the first propulsion member (10), and the second propulsion member (20). The propulsion body for a propulsion method according to claim 1, wherein the connection specifications of a front end side connection portion (21) and a rear end side connection portion (23) of the second propulsion member (10) are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7562198A JP3163280B2 (en) | 1998-03-24 | 1998-03-24 | Propulsion body for propulsion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7562198A JP3163280B2 (en) | 1998-03-24 | 1998-03-24 | Propulsion body for propulsion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11270278A JPH11270278A (en) | 1999-10-05 |
| JP3163280B2 true JP3163280B2 (en) | 2001-05-08 |
Family
ID=13581474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7562198A Expired - Fee Related JP3163280B2 (en) | 1998-03-24 | 1998-03-24 | Propulsion body for propulsion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3163280B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6433823B2 (en) * | 2015-03-05 | 2018-12-05 | 株式会社関電工 | Target attaching / detaching apparatus and target attaching / detaching method |
-
1998
- 1998-03-24 JP JP7562198A patent/JP3163280B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11270278A (en) | 1999-10-05 |
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