JPH0336086U - - Google Patents
Info
- Publication number
- JPH0336086U JPH0336086U JP9737389U JP9737389U JPH0336086U JP H0336086 U JPH0336086 U JP H0336086U JP 9737389 U JP9737389 U JP 9737389U JP 9737389 U JP9737389 U JP 9737389U JP H0336086 U JPH0336086 U JP H0336086U
- Authority
- JP
- Japan
- Prior art keywords
- roller cutter
- hole wall
- excavation
- center
- support frame
- 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
- 238000009412 basement excavation Methods 0.000 claims description 13
- 230000008602 contraction Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Description
第１図は本考案の一実施例である掘削装置を示
すものであつて、拡底掘削前の状態を示す縦断面
図、第２図は第１図のａ−ａ´の線断面図、第３
図は第１図のｂ−ｂ´の線断面図、第４図は本考
案の一実施例である掘削装置の拡底掘削状態を示
す縦断面図、第５図は従来の拡掘ローラカツタに
よる拡底および孔壁掘削の状態を示す説明図、第
６図は本考案の拡掘ローラカツタによる拡底およ
び孔壁掘削の状態を示す説明図、第７図は本考案
の掘削装置による縮拡底ビツト掘削試験結果を示
す図である。
１……中心管体、１ａ……中心管体下部固着の
枠体、１ｂ……エア用通路管、２……中心管体上
端の接続フランジ、３……中心管体下端の接続フ
ランジ、４……パイロツトローラビツト、４ａ…
…吸込口、５……中心管体中央部の上下摺動用案
内部、６……拡掘ローラカツタ用支持枠、７……
ピン、８……拡掘ローラカツタ、８ａ……拡掘ロ
ーラカツタの最外周ゲージ部、９……ピン、１０
……アームリンク、１１……摺動部材、１２……
液圧シリンダ、１２ａ……液圧シリンダのピスト
ンロツド、１３……ピン、１４……ピン、１５…
…ピン、１６……保護用の外筒、θ……拡底径部
の孔壁傾斜角、１７……従来の拡掘ローラカツタ
端面部の最外周側ゲージ面、１８……従来のカツ
タ支持アームの外側面。
Fig. 1 shows an excavation equipment which is an embodiment of the present invention, and is a vertical sectional view showing the state before bottom-expanding excavation, Fig. 2 is a sectional view taken along line a-a' in Fig. 3
The figure is a cross-sectional view taken along line b-b' in Fig. 1, Fig. 4 is a vertical sectional view showing the state of bottom-expanding excavation of the excavation equipment which is an embodiment of the present invention, and Fig. 5 is a bottom-expanding using a conventional excavation roller cutter. FIG. 6 is an explanatory diagram showing the state of bottom expansion and hole wall excavation using the excavation roller cutter of the present invention. FIG. 7 is an explanatory diagram showing the conditions of bottom expansion and hole wall excavation using the excavation device of the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Center tube, 1a... Frame body fixed to the bottom of the center tube, 1b... Air passage pipe, 2... Connection flange at the upper end of the center tube, 3... Connection flange at the lower end of the center tube, 4 ...Pilot Rabbit, 4a...
... Suction port, 5 ... Vertical sliding guide part at the center of the central tube body, 6 ... Support frame for digging roller cutter, 7 ...
Pin, 8...Expanding roller cutter, 8a...Outermost gauge part of the digging roller cutter, 9...Pin, 10
...Arm link, 11...Sliding member, 12...
Hydraulic cylinder, 12a... Piston rod of hydraulic cylinder, 13... Pin, 14... Pin, 15...
... Pin, 16 ... Protective outer cylinder, θ ... Inclination angle of the hole wall of the enlarged bottom diameter section, 17 ... Outermost gauge surface of the end face of a conventional excavation roller cutter, 18 ... Conventional cutter support arm outer surface.
Claims (1)
イプと接続されている中心管体の下端に下端中心
部より土砂や掘削屑を水と共に吸い上げる吸込口
を有する切削刃としてローラカツタを配置した先
端ビツトを取り付け、前記中心管体下部で先端ビ
ツト直上位置の固定した支持枠体に弧状軌跡を画
いて孔壁にくい込み拡底および孔壁掘削が可能で
縮小状態にして前記先端ビツトの掘削外径よりも
小さく格納できるように拡掘ローラカツタを取り
付け、前記中心管体中央部に設けた軸方向に摺動
可能な案内部に上下摺動可能に嵌合させた摺動部
材と前記拡掘ローラカツタの支持枠アーム部とを
リンクを介して連結させ、前記中心管体の上部に
設けた液圧シリンダの伸縮量を調整することで前
記拡掘ローラカツタが孔壁にくい込み、拡底およ
び孔壁掘削でき拡底部径を調整可能としたことを
特徴とする拡底工法用の掘削装置。 At the lower end of the center tube connected to the drill pipe of the reverse circulation drill, a tip bit with a roller cutter arranged as a cutting blade having a suction port that sucks up soil and excavation debris together with water from the center of the lower end is attached. It is possible to expand the bottom and excavate the hole wall by drawing an arcuate trajectory on the fixed support frame directly above the tip bit at the bottom of the pipe body and digging into the hole wall. An excavation roller cutter is attached, and a sliding member that is vertically slidably fitted to a guide portion that is slidable in the axial direction provided at the center of the central tube body is linked to a support frame arm portion of the excavation roller cutter. By adjusting the amount of expansion and contraction of a hydraulic cylinder provided at the upper part of the central pipe body, the expanding roller cutter can sink into the hole wall, allowing the bottom to be expanded and the hole wall to be excavated, and the diameter of the expanded bottom part to be adjusted. A drilling device for the bottom-expanding method, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989097373U JPH086864Y2 (en) | 1989-08-21 | 1989-08-21 | Drilling equipment for bottom expansion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989097373U JPH086864Y2 (en) | 1989-08-21 | 1989-08-21 | Drilling equipment for bottom expansion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0336086U true JPH0336086U (en) | 1991-04-09 |
| JPH086864Y2 JPH086864Y2 (en) | 1996-02-28 |
Family
ID=31646518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989097373U Expired - Lifetime JPH086864Y2 (en) | 1989-08-21 | 1989-08-21 | Drilling equipment for bottom expansion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086864Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105339A (en) * | 2006-10-27 | 2008-05-08 | Tokyo Electric Power Co Inc:The | Hole wall roughening device and hole wall roughening method |
| JP2022060450A (en) * | 2018-04-23 | 2022-04-14 | 清水建設株式会社 | Cast-in-place concrete pile |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5126701U (en) * | 1974-08-20 | 1976-02-27 | ||
| JPS6042146U (en) * | 1983-08-29 | 1985-03-25 | 株式会社タチエス | Vehicle seat back hinge structure |
-
1989
- 1989-08-21 JP JP1989097373U patent/JPH086864Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5126701U (en) * | 1974-08-20 | 1976-02-27 | ||
| JPS6042146U (en) * | 1983-08-29 | 1985-03-25 | 株式会社タチエス | Vehicle seat back hinge structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105339A (en) * | 2006-10-27 | 2008-05-08 | Tokyo Electric Power Co Inc:The | Hole wall roughening device and hole wall roughening method |
| JP2022060450A (en) * | 2018-04-23 | 2022-04-14 | 清水建設株式会社 | Cast-in-place concrete pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH086864Y2 (en) | 1996-02-28 |
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