JPH0284889U - - Google Patents
Info
- Publication number
- JPH0284889U JPH0284889U JP16557188U JP16557188U JPH0284889U JP H0284889 U JPH0284889 U JP H0284889U JP 16557188 U JP16557188 U JP 16557188U JP 16557188 U JP16557188 U JP 16557188U JP H0284889 U JPH0284889 U JP H0284889U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- sludge barrel
- space
- outer periphery
- center
- 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.)
- Granted
Links
- 239000010802 sludge Substances 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Sampling And Sample Adjustment (AREA)
Description
第１図は本考案の一実施例を示す未固結の土砂
の層を掘削時における装置の縦断面図、第２図は
本考案の一実施例を示す固結度の高い地層や礫層
を掘削時における装置の縦断面図、第３図ａは第
１図のＡ―Ａ線矢視図、第３図ｂは第３図ａの一
部側面図である。
１０……ドリルパイプ、２０……スラツジバー
レル、２１……空間、３０……ビツト、３１……
クラウン部、３２……シリンダー、３３……ピス
トン、３４……孔、３５……リング状弾性体、３
６……超硬チツプ。
Fig. 1 is a vertical cross-sectional view of the device when excavating a layer of unconsolidated earth and sand, showing an embodiment of the present invention, and Fig. 2 is a highly consolidated stratum and gravel layer showing an embodiment of the present invention. FIG. 3a is a longitudinal sectional view of the apparatus during excavation, FIG. 3a is a view taken along the line AA in FIG. 1, and FIG. 3b is a partial side view of FIG. 3a. 10...Drill pipe, 20...Sludge barrel, 21...Space, 30...Bit, 31...
Crown portion, 32... Cylinder, 33... Piston, 34... Hole, 35... Ring-shaped elastic body, 3
6...Carbide tip.
Claims (1)
を有するスラツジバーレルと、 基端が前記スラツジバーレルの空間に開放され
、先端が掘削面に連通するシリンダーにピストン
が嵌挿され、前記スラツジバーレルの先端に装着
されたビツトとより成り、 前記ピストン外周には複数段のリング状弾性体
が装着され、前記ビツト先端の掘削面は外周より
中心に向かう凹状のテーパー面に形成されたクラ
ウン部を有し、その中央には前記シリンダーに連
通する孔が穿設され、前記クラウン部には掘削用
チツプが植設されていることを特徴とするロータ
リパーカツシヨンドリル用無水ボーリング装置。[Claims for Utility Model Registration] A sludge barrel connected to the tip of a drill pipe and having a space of a predetermined volume; a piston fitted into a cylinder whose base end is open to the space of the sludge barrel and whose tip communicates with the excavation surface; It consists of a bit attached to the tip of the sludge barrel, a plurality of ring-shaped elastic bodies are attached to the outer periphery of the piston, and the excavated surface of the tip of the bit has a crown formed in a concave tapered surface from the outer periphery toward the center. 1. A waterless boring device for a rotary percution drill, characterized in that a hole communicating with the cylinder is bored in the center thereof, and a drilling tip is implanted in the crown portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16557188U JPH0640711Y2 (en) | 1988-12-21 | 1988-12-21 | Anhydrous boring equipment for rotary percussion drills |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16557188U JPH0640711Y2 (en) | 1988-12-21 | 1988-12-21 | Anhydrous boring equipment for rotary percussion drills |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0284889U true JPH0284889U (en) | 1990-07-02 |
| JPH0640711Y2 JPH0640711Y2 (en) | 1994-10-26 |
Family
ID=31452178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16557188U Expired - Lifetime JPH0640711Y2 (en) | 1988-12-21 | 1988-12-21 | Anhydrous boring equipment for rotary percussion drills |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0640711Y2 (en) |
-
1988
- 1988-12-21 JP JP16557188U patent/JPH0640711Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0640711Y2 (en) | 1994-10-26 |
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