JPH0738472Y2 - Thrust detection device for small diameter pipe propulsion machine - Google Patents

Thrust detection device for small diameter pipe propulsion machine

Info

Publication number
JPH0738472Y2
JPH0738472Y2 JP1989027331U JP2733189U JPH0738472Y2 JP H0738472 Y2 JPH0738472 Y2 JP H0738472Y2 JP 1989027331 U JP1989027331 U JP 1989027331U JP 2733189 U JP2733189 U JP 2733189U JP H0738472 Y2 JPH0738472 Y2 JP H0738472Y2
Authority
JP
Japan
Prior art keywords
diameter pipe
thrust
small
propulsion
pipe
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 - Lifetime
Application number
JP1989027331U
Other languages
Japanese (ja)
Other versions
JPH02120591U (en
Inventor
欣一 大塚
初治 土井
秀雄 萩原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP1989027331U priority Critical patent/JPH0738472Y2/en
Publication of JPH02120591U publication Critical patent/JPH02120591U/ja
Application granted granted Critical
Publication of JPH0738472Y2 publication Critical patent/JPH0738472Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Excavating Of Shafts Or Tunnels (AREA)

Description

【考案の詳細な説明】 (産業上の利用分野) この考案は掘削ヘッドとともに地中を推進される小口径
管に加わる推進力を検出する小口径管推進機械の推力検
出装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a thrust detecting device for a small diameter pipe propulsion machine that detects a propulsive force applied to a small diameter pipe propelled in the ground together with an excavating head.

(従来の技術) 従来は小口径管を地中へ埋設する小口径管推進機械に
は、先端部に掘削ヘッドを取付けた小口径管を発進立抗
より到達立抗へ向けて推進させることにより埋設する推
進工法を採用したものと、発進立抗より到達立抗へ向け
て予めパイロット管を推進させた後、このパイロット管
に掘削ヘッドを介して小口径管を接続し、上記パイロッ
ト管を案内にして小口径管を推進させることにより埋設
する推進工法を採用したものがある。
(Prior Art) Conventionally, in a small-diameter pipe propulsion machine in which a small-diameter pipe is buried in the ground, by propelling a small-diameter pipe with an excavating head attached to the tip from the starting stand to the reaching stand, After the pilot pipe is propelled in advance from the starting shaft to the reaching shaft by adopting the buried propulsion method, a small diameter pipe is connected to this pilot pipe through the drilling head, and the pilot pipe is guided. There are some that have adopted a propulsion method of burying by promoting a small diameter pipe.

何れの場合も推進時小口径管に大きな推進力が作用する
ので、発進立抗内に設置した推進装置の油圧回路に推力
計を設けて、この推力計をみながら小口径管に許容耐荷
力以上の推進が作用しないよう推進力を制御して、小口
径管の推進を行っている。
In either case, a large propulsive force acts on the small diameter pipe during propulsion.Therefore, install a thrust meter in the hydraulic circuit of the propulsion device installed in the starting stand, and check the thrust meter to determine the allowable load capacity of the small diameter pipe. The propulsion force is controlled so that the above propulsion does not work, and the small-diameter pipe is propelled.

(考案が解決しようとする課題) しかし従来の小口径管推進機械では推進装置の油圧回路
に設けた推力計により推力を検出しているため、得られ
る推力値は掘削ヘッド前面に加わる土圧と、小口径管の
外周面と土との摩擦力を合計したもの、またはパイロッ
ト管と土との摩擦力をさらに合計したものとなり、小口
径管のみに加わる圧縮力は検出できなかった。
(Problems to be solved by the invention) However, in the conventional small-diameter pipe propulsion machine, the thrust is detected by the thrust meter provided in the hydraulic circuit of the propulsion device. , The sum of the frictional forces between the outer peripheral surface of the small diameter pipe and the soil, or the sum of the frictional forces between the pilot pipe and the soil, the compression force applied only to the small diameter pipe could not be detected.

このため近年のように埋設すべき小口径管の種類が多様
化したり、埋設距離が長距離化すると、上記従来の検出
方法では、しばしば小口径管に許容耐荷以上の推力が加
わることがあり、その結果推進中に小口径管が破損する
などの不具合があった。
For this reason, when the types of small-diameter pipes to be buried are diversified as in recent years, or when the burial distance becomes long, the above conventional detection method often applies a thrust more than the allowable load capacity to the small-diameter pipes. As a result, there was a problem such as breakage of the small diameter pipe during propulsion.

また特公昭62-6079号公報に示すように掘削ヘッドのみ
に負荷する軸方向の荷重を検出するものは公知である
が、推進ジャッキの推力によりヘッドの回転振動が減衰
していないかを知るためにヘッド側の荷重を測ったもの
であり、該公報に記載されたひずみゲージはひずみ測定
用の小径棒に設置されているので推力の大きな管埋設に
は小径棒が耐えられないというような不具合がある。
Further, as shown in Japanese Patent Publication No. 62-6079, it is known to detect the axial load applied only to the excavating head, but in order to know whether the rotational vibration of the head is attenuated by the thrust of the propulsion jack. The load on the head side is measured in the above, and since the strain gauge described in the publication is installed on a small diameter rod for strain measurement, there is a problem that the small diameter rod cannot withstand burying a pipe with large thrust. There is.

この考案は上記不具合を改善する目的でなされたもの
で、小口径管に加わる推力が検出できるようにした小口
径管推進機械の推力検出装置を提供して、埋設管(推進
管)が許容耐荷力の範囲内にあるか否かを判断し、推力
を制御すると共に、推進中に小口径管が破損するのを未
然に防止しようとするものである。
The present invention was made in order to improve the above-mentioned inconvenience, and provides a thrust detection device for a small-diameter pipe propulsion machine capable of detecting the thrust applied to a small-diameter pipe, so that the embedded pipe (propulsion pipe) has an allowable load capacity. The purpose of this is to determine whether or not the force is within the range of force, control the thrust, and prevent damage to the small diameter pipe during propulsion.

(課題を解決するための手段及び作用) この考案は上記目的を達成するために、埋設すべき小口
径管を発進立抗に設置した推進装置により掘削ヘッドと
ともに地中へ推進させる小口径管推進機械において、上
記掘削ヘッドと小口径管の間にあって、掘削ヘッドの反
力と推進装置による小口径管の推進力を検出する推力検
出装置本体を設けるとともに、上記本体が検出した推力
を発進立抗側に設けた推力計に表示して、この表示をも
とに推進装置の推力が小口径管の許容耐荷力を越えない
ように制御することにより、小口径管を破損することな
く地中へ推進できるようにした小口径管推進機械の推力
検出装置を提供するものである。
(Means and Actions for Solving the Problem) In order to achieve the above-mentioned object, this invention proposes a small-diameter pipe propulsion in which a small-diameter pipe to be buried is propelled into the ground together with an excavating head by a propulsion device installed on a starting and standing shaft. In the machine, a thrust detecting device main body is provided between the excavating head and the small diameter pipe for detecting the reaction force of the excavating head and the propulsive force of the small diameter pipe by the propulsion device, and the thrust detected by the main body is started and launched. It is displayed on the thruster installed on the side and the thrust of the propulsion device is controlled based on this display so that it does not exceed the allowable load capacity of the small diameter pipe. A thrust detection device for a small-diameter pipe propulsion machine that is capable of propulsion.

(実施例) この考案の実施例を図面を参照して詳述する。Embodiment An embodiment of the present invention will be described in detail with reference to the drawings.

第1図は先端に掘削ヘッド1を取付けた小口径管2を、
発進立抗3に設置した推進装置4により到達立抗5へ向
けて推進させている状態を示すもので、掘削ヘッド1と
小口径管2を接続するアダプタ(図示せず)にこの考案
の推力検出装置の本体6が設けられ、掘削ヘッド1の反
力と推進装置4による小口径管の推進力を検出するよう
になっている。
FIG. 1 shows a small-diameter pipe 2 with a drilling head 1 attached to the tip,
This figure shows a state in which the propulsion device 4 installed on the starting stand 3 is propelling it toward the reaching stand 5 and the thrust of the present invention is applied to an adapter (not shown) that connects the drill head 1 and the small diameter pipe 2. A main body 6 of the detection device is provided to detect the reaction force of the excavation head 1 and the propulsion force of the small diameter pipe by the propulsion device 4.

そしてこの推力検出装置の本体6で検出された推力は推
進装置4の操作盤7に設けられた推力計8に表示される
ようになっている。
The thrust detected by the main body 6 of the thrust detecting device is displayed on the thrust meter 8 provided on the operation panel 7 of the propulsion device 4.

なお9はカッタ油圧計、10は元押しジャッキ用推力計、
11は推力調整ノブである。
In addition, 9 is a cutter oil pressure gauge, 10 is a thruster for the original push jack,
11 is a thrust adjustment knob.

一方第2図及び第3図は予めパイロット管14を発進立抗
3により到達立抗5へ向けて推進させた後、パイロット
管14に掘削ヘッド1を介して小口径管2を接続して小口
径管2の推進を行う別の実施例で、掘削ヘッド1の先端
部に第4図に示すようにカッタヘッド15が設けられてい
て、このカッタヘッド15で掘削された土砂は、カッタヘ
ッド15へ取り込まれた後、パイロット管14内に設けられ
たスクリュウコンベヤ13により到達立抗5側へ搬送され
るようになっている。
On the other hand, as shown in FIGS. 2 and 3, after the pilot pipe 14 is previously propelled by the starting stand 3 toward the reaching stand 5, the pilot pipe 14 is connected to the small diameter pipe 2 via the excavation head 1. In another embodiment in which the caliber pipe 2 is propelled, a cutter head 15 is provided at the tip of the excavation head 1 as shown in FIG. 4, and the earth and sand excavated by the cutter head 15 is cut by the cutter head 15. After being taken into, the screw conveyor 13 provided in the pilot pipe 14 conveys it to the side of the reaching and standing wheel 5.

そして推力検出装置の本体6は、掘削ヘッド1と小口径
管2を接続するアダプタ16に取付けられている。
The body 6 of the thrust detecting device is attached to an adapter 16 that connects the excavating head 1 and the small diameter pipe 2.

上記アダプタ16は筒状をなしていて、内周面に環状部16
aが突設されており、この環状部16aの小口径管2側面に
固着具17により本体6が取付けられている。
The adapter 16 has a cylindrical shape and has an annular portion 16 on the inner peripheral surface.
a is projectingly provided, and the main body 6 is attached to the side surface of the small-diameter pipe 2 of the annular portion 16a by a fastener 17.

上記本体6は第6図に示すように環状をなしていて、上
記環状部16aと小口径管2の端面に当接された受板18の
間に介在されており、掘削ヘッド1及び小口径管2の推
進時これらの間に作用する推進力を検出して、操作盤7
に設けられた推力計8に表示するようになっている。
The main body 6 has an annular shape as shown in FIG. 6, and is interposed between the annular portion 16a and the receiving plate 18 abutting on the end face of the small diameter pipe 2, and the excavating head 1 and the small diameter pipe are connected. When the pipe 2 is propelled, the propulsive force acting between them is detected, and the operation panel 7
It is designed to be displayed on the thrust meter 8 provided in the.

なお小口径管2が塩化ビニール管のように許容耐荷力が
小さく直接小口径管2に推力が加えられない場合は、第
8図に示すように小口径管2内にスラスト管19を設けて
推進させるが、この場合はアダプタ16の環状部16aとス
ライド管19に固着された受板18の間に本体6を設けて、
スラスト管19に加わる推力を検出するようになってい
る。
If the small-diameter pipe 2 has a small allowable load capacity such as a vinyl chloride pipe and a thrust cannot be directly applied to the small-diameter pipe 2, a thrust pipe 19 is provided in the small-diameter pipe 2 as shown in FIG. In this case, the main body 6 is provided between the annular portion 16a of the adapter 16 and the receiving plate 18 fixed to the slide tube 19.
The thrust applied to the thrust pipe 19 is detected.

次に作用を説明すると、第1図に示す推進工法及び第2
図以下に示す推進工法の何れの場合も、掘削ヘッド1及
び小口径管2を地中へ推進すると、掘削ヘッド1と小口
径管2の間に介在された推力検出装置の本体6には、掘
削ヘッド1を介して小口径管2に加わる推力が検出され
る。
Next, the operation will be described. The propulsion method and the second method shown in FIG.
In any of the following propulsion methods, when the excavation head 1 and the small diameter pipe 2 are propelled into the ground, the thrust detection device main body 6 interposed between the excavation head 1 and the small diameter pipe 2 is The thrust applied to the small diameter pipe 2 via the excavation head 1 is detected.

この推力はケーブル21を介して発進立抗3側に設けられ
た操作盤7へ送られ推力計8に表示される。
This thrust is sent to the operation panel 7 provided on the side of the starting and standing shaft 3 via the cable 21 and displayed on the thrust meter 8.

従って作業者は、推力計8に表示される推力と、元押し
ジャッキ用推力計10が表示する推力の差が小口径管2の
許容耐荷力以下となるように推進装置4を制御すること
により、小口径管2を破損することなく推進させること
ができる。
Therefore, the operator controls the propulsion device 4 so that the difference between the thrust displayed on the thrust meter 8 and the thrust displayed on the thrust jack thrust meter 10 is less than the allowable load bearing capacity of the small diameter pipe 2. The small-diameter pipe 2 can be propelled without damage.

また第8図に示すようにスラスト管19を使用することに
より、硬質塩化ビニール管のような許容耐荷力の低い小
口径管2についても破損することなく推進させることが
できる。
Further, by using the thrust pipe 19 as shown in FIG. 8, it is possible to propel a small-diameter pipe 2 having a low permissible load bearing capacity such as a hard vinyl chloride pipe without damage.

(考案の効果) この考案は以上詳述したように、地中へ推進される掘削
ヘッドと小口径管の間に推力検出装置本体を設けて、掘
削ヘッド及び埋設管に作用する反力と推進装置による小
口径管の推進力を検出するようにしたことから、元押し
ジャッキによる推力と反力を加えた推進力を知ることが
でき、元押しジャッキの元押し推進力との差から反力の
大きさを知ることができる。
(Effect of the Invention) As described in detail above, the present invention provides a thrust detecting device main body between the excavating head propelled into the ground and the small-diameter pipe, and the reaction force and the propulsion acting on the excavating head and the buried pipe. Since the propulsive force of the small-diameter pipe by the device is detected, the propulsive force obtained by adding the thrust and reaction force of the original push jack can be known. You can know the size of.

従って反力の大きさから検出した推力が小口径管の許容
耐荷力を越えないように推進力を制御することが可能に
なり、許容耐荷力の低い小口径管でも破損することなく
地中へ推進することができると共に、長距離の推進や種
々の小口径管の埋設も容易に行えるようになる。
Therefore, it becomes possible to control the propulsion force so that the thrust detected from the magnitude of the reaction force does not exceed the permissible load capacity of the small diameter pipe, and even a small diameter pipe with a low permissible load bearing capacity will not be damaged. Not only can it be propelled, it can also be propelled over long distances and the embedding of various small diameter pipes easily.

また小口径管に作用している推力が把握できることか
ら、摩擦を低減させるために注入する滑材の注入量も必
要最小限とすることができ、経済的である。
Further, since the thrust acting on the small-diameter pipe can be grasped, the injection amount of the lubricant to be injected in order to reduce friction can be minimized, which is economical.

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

図面はこの考案の一実施例を示し、第1図ないし第3図
は推進工法の説明図、第4図は掘削ヘッドの拡大図、第
5図は第4図V円内の拡大図、第6図は推力検出装置本
体の斜視図、第7図は操作盤の正面図、第8図は別の実
施例を示す説明図である。 1……掘削ヘッド、2……小口径管 3……発進立抗、4……推進装置 6……推力検出装置本体、8……推力計
The drawings show one embodiment of the present invention, FIGS. 1 to 3 are explanatory views of a propulsion method, FIG. 4 is an enlarged view of a drilling head, FIG. 5 is an enlarged view in a V circle of FIG. FIG. 6 is a perspective view of the thrust detecting device main body, FIG. 7 is a front view of the operation panel, and FIG. 8 is an explanatory view showing another embodiment. 1 ... Excavation head, 2 ... Small diameter pipe 3 ... Starting resistance, 4 ... Propulsion device 6 ... Thrust detection device main unit, 8 ... Thrust meter

───────────────────────────────────────────────────── フロントページの続き (72)考案者 萩原 秀雄 埼玉県加須市南篠崎1―6 小松ゼノア株 式会社建機事業部内 (56)参考文献 特開 昭58−117432(JP,A) 特開 昭60−173290(JP,A) 特開 昭60−173291(JP,A) 実開 昭51−18012(JP,U) 特公 昭62−6079(JP,B2) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Hagiwara Hideo Hagiwara 1-6 Minamishinozaki, Kazo-shi, Saitama Komatsu Zenoa Corporation Construction Machinery Division (56) Reference JP-A-58-117432 (JP, A) Sho 60-173290 (JP, A) JP 60-173291 (JP, A) Actual development Sho 51-18012 (JP, U) JP 62-6079 (JP, B2)

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】埋設すべき小口径管2を、発進立坑3内に
設置した推進装置4により掘削ヘッド1とともに地中へ
推進させる小口径管推進機械において、上記掘削ヘッド
1と小口径管2の間にあって、掘削ヘッド1の反力と推
進装置4による小口径管の推進力を検出する推力検出装
置の本体6を設けると共に、上記本体6が検出した推力
を発進立坑3側に設けた推力計8に表示してなる小口径
管推進機械の推力検出装置。
1. A small-diameter pipe propulsion machine for propelling a small-diameter pipe 2 to be buried into a ground together with an excavating head 1 by a propulsion device 4 installed in a starting shaft 3, wherein the excavating head 1 and the small-diameter pipe 2 are provided. In between, a main body 6 of a thrust detection device for detecting the reaction force of the excavation head 1 and the propulsive force of the small diameter pipe by the propulsion device 4 is provided, and the thrust detected by the main body 6 is provided on the starting shaft 3 side. A thrust detection device for a small-diameter pipe propulsion machine that displays a total of 8.
【請求項2】許容耐荷力の低い小口径管2の場合、小口
径管2内に設けたスラスト管19と掘削ヘッド1の間に推
力検出装置本体6を設けてなる請求項(1)記載の推力
検出装置。
2. A small-diameter pipe 2 having a low allowable load-bearing capacity, wherein a thrust detecting device main body 6 is provided between a thrust pipe 19 provided inside the small-diameter pipe 2 and the excavating head 1. Thrust detector.
JP1989027331U 1989-03-13 1989-03-13 Thrust detection device for small diameter pipe propulsion machine Expired - Lifetime JPH0738472Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989027331U JPH0738472Y2 (en) 1989-03-13 1989-03-13 Thrust detection device for small diameter pipe propulsion machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989027331U JPH0738472Y2 (en) 1989-03-13 1989-03-13 Thrust detection device for small diameter pipe propulsion machine

Publications (2)

Publication Number Publication Date
JPH02120591U JPH02120591U (en) 1990-09-28
JPH0738472Y2 true JPH0738472Y2 (en) 1995-09-06

Family

ID=31249729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989027331U Expired - Lifetime JPH0738472Y2 (en) 1989-03-13 1989-03-13 Thrust detection device for small diameter pipe propulsion machine

Country Status (1)

Country Link
JP (1) JPH0738472Y2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58117432A (en) * 1982-08-09 1983-07-13 Tokyu Constr Co Ltd Method and device for measuring resistance of pipe forcibly inserted into ground
NZ212598A (en) * 1985-06-28 1992-09-25 Ronald Percival Davis Window stay with friction pivot joints at pivotal connections and mountings and a control arm connected from lower arm to first of two upper arms from intermediate their ends

Also Published As

Publication number Publication date
JPH02120591U (en) 1990-09-28

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