JPH0478798B2 - - Google Patents
Info
- Publication number
- JPH0478798B2 JPH0478798B2 JP60074982A JP7498285A JPH0478798B2 JP H0478798 B2 JPH0478798 B2 JP H0478798B2 JP 60074982 A JP60074982 A JP 60074982A JP 7498285 A JP7498285 A JP 7498285A JP H0478798 B2 JPH0478798 B2 JP H0478798B2
- Authority
- JP
- Japan
- Prior art keywords
- reamer
- casing
- cover
- drilling machine
- underground
- 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
Links
- 238000005553 drilling Methods 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 description 9
- 238000007796 conventional method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Description
【発明の詳細な説明】
(a) 産業上の利用分野
本発明は地中に孔を作り、その孔に配管を埋設
する分野で利用されるものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention is used in the field of creating a hole in the ground and burying piping in the hole.
(b) 従来の技術
一般に、地中貫孔機には特公昭54−25721号に
て公表されている如く、ケーシング内に打撃体を
設け、ケーシングの前進・後退を制御する装置を
操作することにより、エアーにて打撃体を移動さ
せてケーシングの前部又は後部に衝突させその衝
撃力にてケーシングを前進させて地中に孔を穿
け、その後、後退させて回収するようになつてい
る。(b) Prior art In general, as disclosed in Japanese Patent Publication No. 54-25721, an underground penetrating machine is equipped with a striking body inside a casing, and by operating a device that controls the advancement and retreat of the casing. The impacting body is moved by air and collides with the front or rear part of the casing, and the casing is moved forward by the impact force to punch a hole in the ground, and is then retreated and recovered.
また、地中貫孔機を使用して地中貫孔機より大
径の孔を作る場合には、従来は第３図（特公昭49
−9924号）の如く、前記地中貫孔機０１の頭部０
２に、テーパ部０３とテーパ部０３より幾分後方
に延びた筒部０４とからなるリーマ０５を取付
け、それにより孔を拡張させるようになつてい
る。 In addition, when using an underground drilling machine to make a hole with a larger diameter than that of the underground drilling machine, conventional methods were as shown in Fig.
-9924), the head 0 of the underground penetrating machine 01
A reamer 05 consisting of a tapered portion 03 and a cylindrical portion 04 extending somewhat rearward from the tapered portion 03 is attached to the hole 2, thereby expanding the hole.
ところが、上記構造では、リーマの筒部が非常
に短いため前進時の直進性が非常に悪く、また地
中貫孔機を後退させる場合にはリーマが地中貫孔
機より外れたり、リーマの筒部内に孔内の土が入
りこむという問題があつた。 However, with the above structure, the cylindrical part of the reamer is very short, so the straightness when moving forward is very poor, and when the underground penetrating machine is moved backward, the reamer may come off the ground penetrating machine, or the inside of the reamer's cylindrical part may There was a problem with soil getting into the hole.
(c) 発明が解決しようとする問題点
本発明は前記の如き問題点を解消するもので、
リーマ本体を地中貫孔機前部に係合させ、リーマ
カバーを地中貫孔機後部に係合させ、前記リーマ
本体とリーマカバーとを螺合させ、リーマ本体及
びリーマカバーを地中貫孔機に一体化させたもの
である。(c) Problems to be solved by the invention The present invention solves the above-mentioned problems.
The reamer body is engaged with the front part of the underground drilling machine, the reamer cover is engaged with the rear part of the underground drilling machine, the reamer main body and the reamer cover are screwed together, and the reamer body and the reamer cover are attached to the underground drilling machine. It is integrated.
(d) 問題点を解決するための手段
本発明は、ケーシング内にてエアーにより打撃
体を前後移動させることによりケーシングを地中
にて前進後退させうる地中貫孔機において、前記
ケーシングより大径の筒部と筒部前方のテーパ部
とを有するリーマ本体と、筒部と筒部後方のテー
パ部とを有するリーマカバーとを螺合して前記ケ
ーシングを覆い、且つリーマ本体をケーシングの
前テーパ部に係合させるとともにリーマカバーを
ケーシングの後テーパ部に係合させてリーマ本体
及びリーマカバーをケーシングに一体化させるよ
うにしたことを特徴とする地中貫孔機用孔拡張装
置に関するものである。(d) Means for Solving the Problems The present invention provides an underground drilling machine capable of moving a casing forward and backward in the ground by moving a striking body back and forth with air inside the casing. A reamer body having a cylindrical portion and a tapered portion at the front of the cylindrical portion, and a reamer cover having a cylindrical portion and a tapered portion at the rear of the cylindrical portion are screwed together to cover the casing, and the reamer body is attached to the front tapered portion of the casing. This relates to a hole expansion device for an underground drilling machine, characterized in that the reamer cover is engaged with the rear tapered portion of the casing, thereby integrating the reamer body and the reamer cover with the casing. .
(e) 実施例
以下実施例を図面にて説明すると、１は地中貫
孔機で、該地中貫孔機１は、前・後に前テーパ部
２及び後テーパ部３を有する円筒状のケーシング
４内に打撃体５を設け、ケーシング４より後方に
延出されたエアーホース６にて導かれたエアーに
より打撃体５を移動させうるようになつている。
またケーシング４に設けられた前進後退を制御す
る装置（図示せず）を操作することにより、前記
打撃体５をケーシング４前部に衝突させて前進さ
せ、ケーシング４後部に衝突させて後退させうる
ようになつている。(e) Embodiment An embodiment will be described below with reference to the drawings. Reference numeral 1 denotes an underground penetrating machine, and the underground penetrating machine 1 has a cylindrical casing 4 having a front tapered part 2 and a rear tapered part 3 at the front and rear. A striking body 5 is provided inside the casing 4, and the striking body 5 can be moved by air guided through an air hose 6 extending rearward from the casing 4.
Further, by operating a device (not shown) provided on the casing 4 that controls forward and backward movement, the striking body 5 can be caused to collide with the front part of the casing 4 and move forward, and can be made to collide with the rear part of the casing 4 and be made to retreat. It's becoming like that.
７は孔拡張装置たるリーマで、該リーマ７はリ
ーマ本体８とリーマカバー９とから構成されてい
る。 A reamer 7 is a hole expanding device, and the reamer 7 is composed of a reamer body 8 and a reamer cover 9.
前記リーマ本体８は、ケーシング４より大径で
長尺の筒部１０と筒部１０前方に形成された先細
のテーパ部１１とからなり、前記筒部１０にてケ
ーシング４を覆い、テーパ部１１内面がケーシン
グ４の前テーパ部２に係合するようになつてい
る。 The reamer main body 8 includes a cylindrical portion 10 having a larger diameter and longer length than the casing 4, and a tapered portion 11 formed in front of the cylindrical portion 10. The cylindrical portion 10 covers the casing 4, and the tapered portion 11 The inner surface is adapted to engage with the front tapered portion 2 of the casing 4.
前記リーマカバー９は前記筒部１０と略同径で
短尺の筒部１２と筒部１２後方に形成された先細
のテーパ部１３とからなり、前記テーパ部１３内
面がケーシング４の後テーパ部３に係合するとと
もに、前記筒部１２がリーマ本体８の筒部１０に
螺合して、且つケーシング４に一体化するように
なつている。 The reamer cover 9 consists of a short cylindrical portion 12 having approximately the same diameter as the cylindrical portion 10 and a tapered portion 13 formed at the rear of the cylindrical portion 12, and the inner surface of the tapered portion 13 is connected to the rear tapered portion 3 of the casing 4. At the same time, the cylindrical portion 12 is screwed into the cylindrical portion 10 of the reamer main body 8 and integrated with the casing 4.
本発明は前記の如き構成で、次に作用について
説明すると、まず、リーマ７を外した地中貫孔機
１を前進させて小孔の孔Ａを穿け、その地中貫孔
機１を後退させて回収する。 The present invention has the above-mentioned structure, and its operation will be explained next. First, the underground penetrating machine 1 with the reamer 7 removed is advanced to drill the small hole A, and the underground penetrating machine 1 is moved backward. to recover.
次にリーマ本体８とリーマカバー９とを螺合さ
せるとともに地中貫孔機１に一体化させる。その
状態で地中貫孔機１を前記小径の孔Ａに挿入して
前進させる。 Next, the reamer body 8 and the reamer cover 9 are screwed together and integrated into the underground drilling machine 1. In this state, the underground penetrating machine 1 is inserted into the small diameter hole A and moved forward.
これにより、第２図の如くリーマ７と略同形の
大径の孔Ｂをケーシングさせることができる。 Thereby, a large diameter hole B having substantially the same shape as the reamer 7 can be made into a casing as shown in FIG.
その際、リーマ７の筒部１０，１２が長尺にケ
ーシングされていることから、地中貫孔機１の直
進精度を高めることができる。 At this time, since the cylindrical parts 10 and 12 of the reamer 7 are elongated with a casing, the accuracy of straight movement of the underground drilling machine 1 can be improved.
大径の孔Ｂ形成後、地中貫孔機１を後退させる
と、地中貫孔機１とリーマ７を回収することがで
きる。 After forming the large-diameter hole B, when the underground piercing machine 1 is moved backward, the underground piercing machine 1 and the reamer 7 can be recovered.
その際、リーマ７は地中貫孔機１に一体化され
ているため、後退途中で外れるようなことはな
く、また孔Ｂに堆積した土はリーマカバー９のテ
ーパ部１３で押し付けられるため、リーマ７内に
入ることもない。 At this time, since the reamer 7 is integrated into the underground drilling machine 1, it will not come off during retraction, and the soil accumulated in the hole B is pressed by the tapered part 13 of the reamer cover 9, so the reamer It doesn't even come within 7.
(f) 発明の効果
以上の如く本発明はリーマ本体を地中貫孔機前
部に係合させ、リーマカバーを地中貫孔機後部に
係合させ、更にリーマ本体とリーマカバーを螺合
させるようにしたので、前進時の直進性を高める
ことができるとともに、後退時に従来の如くリー
マが外れたり、リーマ内に土が入りこむようなこ
とが全くなくなり、リーマを確実に回収すること
ができ、地中貫孔機へのリーマの取付け、取外し
を簡単にすることができる。(f) Effect of the Invention As described above, the present invention has a method of engaging the reamer main body with the front part of the underground drilling machine, engaging the reamer cover with the rear part of the underground drilling machine, and further screwing the reamer main body and the reamer cover together. As a result, it is possible to improve the straightness when moving forward, and there is no need for the reamer to come off or for dirt to get into the reamer when reversing, which is the case with conventional methods. The reamer can be easily installed and removed from the medium drilling machine.
第１図は全体図、第２図は作動状態図、第３図
は従来例である。
１は地中貫孔機、７はリーマ、８はリーマ本
体、９はリーマカバー。
FIG. 1 is an overall view, FIG. 2 is an operating state diagram, and FIG. 3 is a conventional example. 1 is an underground drilling machine, 7 is a reamer, 8 is a reamer body, and 9 is a reamer cover.
Claims (1)
移動させることによりケーシングを地中にて前進
後退させうる地中貫孔機において、前記ケーシン
グより大径の筒部と筒部前方のテーパ部とを有す
るリーマ本体と、筒部と筒部後方のテーパ部とを
有するリーマカバーとを螺合して前記ケーシング
を覆い、且つリーマ本体をケーシングの前テーパ
部に係合させるとともにリーマカバーをケーシン
グの後テーパ部に係合させてリーマ本体及びリー
マカバーをケーシングに一体化させるようにした
ことを特徴とする地中貫孔機用孔拡張装置。1. A reamer having a cylindrical part with a larger diameter than the casing and a tapered part in front of the cylindrical part, in an underground drilling machine capable of moving a casing forward and backward in the ground by moving a striking body back and forth with air inside the casing. The main body and a reamer cover having a cylindrical portion and a tapered portion at the rear of the cylindrical portion are screwed together to cover the casing, and the reamer main body is engaged with the front tapered portion of the casing, and the reamer cover is connected to the rear tapered portion of the casing. A hole expansion device for an underground drilling machine, characterized in that the reamer body and the reamer cover are integrated with the casing by engaging with the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7498285A JPS61233193A (en) | 1985-04-08 | 1985-04-08 | Hole enlarging apparatus for ground drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7498285A JPS61233193A (en) | 1985-04-08 | 1985-04-08 | Hole enlarging apparatus for ground drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61233193A JPS61233193A (en) | 1986-10-17 |
| JPH0478798B2 true JPH0478798B2 (en) | 1992-12-14 |
Family
ID=13562996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7498285A Granted JPS61233193A (en) | 1985-04-08 | 1985-04-08 | Hole enlarging apparatus for ground drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61233193A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5425721A (en) * | 1977-07-28 | 1979-02-26 | Seiko Epson Corp | Electronic portable musical instrument |
| JPS5531111U (en) * | 1978-08-14 | 1980-02-28 | ||
| JPS5928718A (en) * | 1982-08-10 | 1984-02-15 | Fuji Electric Corp Res & Dev Ltd | Delay circuit |
-
1985
- 1985-04-08 JP JP7498285A patent/JPS61233193A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5425721A (en) * | 1977-07-28 | 1979-02-26 | Seiko Epson Corp | Electronic portable musical instrument |
| JPS5531111U (en) * | 1978-08-14 | 1980-02-28 | ||
| JPS5928718A (en) * | 1982-08-10 | 1984-02-15 | Fuji Electric Corp Res & Dev Ltd | Delay circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61233193A (en) | 1986-10-17 |
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