JPS6033185Y2 - Cone-shaped roller rabbit with wings - Google Patents
Cone-shaped roller rabbit with wingsInfo
- Publication number
- JPS6033185Y2 JPS6033185Y2 JP14198479U JP14198479U JPS6033185Y2 JP S6033185 Y2 JPS6033185 Y2 JP S6033185Y2 JP 14198479 U JP14198479 U JP 14198479U JP 14198479 U JP14198479 U JP 14198479U JP S6033185 Y2 JPS6033185 Y2 JP S6033185Y2
- Authority
- JP
- Japan
- Prior art keywords
- cone
- bit
- wings
- roller
- rabbit
- 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
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Description
【考案の詳細な説明】
本考案はエヤーリフト式、サクションポンプ式等のリバ
ース工法で、玉石層を場所打杭の掘削をする際に適した
買付コーン型口ごラビットに関するものである。[Detailed description of the invention] The present invention relates to a cone-shaped mouth rabbit suitable for excavating cast-in-place piles in cobblestone layers using reverse construction methods such as air lift type and suction pump type.
リバース工法で場所打杭の掘削をするには、三翼ビット
、四翼ビット、ユンボビット、ローラビット、コニカル
ビット等を用いている。To excavate cast-in-place piles using the reverse method, three-winged bits, four-winged bits, jumbo bits, roller bits, conical bits, etc. are used.
しかし、玉石(礫)層を掘削する場合、玉石が大きいと
循環水系統の配管等に詰り、水が循環しなくなって掘削
が不能となる。However, when excavating a cobblestone (gravel) layer, if the cobblestones are large, they will clog the pipes of the circulating water system, preventing water from circulating and making excavation impossible.
このため循環水系統の配管が詰らない程度に玉石を破砕
しなければならない。For this reason, the boulders must be crushed to the extent that they do not clog the pipes of the circulating water system.
コーン型ローラビットは岩盤にビット重量をかけ、削っ
て岩盤を掘削している。Cone-type roller bits are used to excavate rock by applying the weight of the bit to the rock.
しかしこのローラビットでは硬い岩盤を破砕するのには
適しているが玉石に混在した地質によってはビット爪の
目詰りが生じて玉石破壊に不利になったり、上からの重
量によって玉石が軟らかい部分に逃げて玉石の破壊や削
り効果が減殺される。However, although this roller bit is suitable for crushing hard rock, depending on the geology mixed with the cobblestones, the bit claws may become clogged, making it unsuitable for crushing the cobblestones, or the weight from above may damage the soft parts of the cobblestones. The boulder's destruction and scraping effects are reduced by running away.
本考案はこれに鑑みてなしたものである。The present invention was developed in view of this.
図に於て1はロービットの本体で掘削孔径に合った大き
さを有し、この本体下面にカッタローラ2を多数突設す
る。In the figure, reference numeral 1 denotes the main body of the low bit, which has a size matching the diameter of the excavated hole, and a number of cutter rollers 2 are protruded from the lower surface of the main body.
このカッタローラ2はカンチレバー型、サドル型等でカ
ッタはセンタカッタ、ゲージカッタ等を掘削すべき地質
に適したものを採用するもので、このローラビット本体
の形状はコーンボトム型となっている。The cutter roller 2 is a cantilever type, a saddle type, etc., and the cutter is a center cutter, a gauge cutter, etc. suitable for the geology to be excavated, and the shape of the roller bit body is a cone bottom type.
このロー、ラビット本体1の外周には三以上の翼3を放
射方向にしかも所望の上反角をつけて突設し、この容具
3に礫層ビットの爪4を多数突設する。Three or more wings 3 are protruded from the outer periphery of the row and rabbit body 1 in the radial direction and at a desired dihedral angle, and a large number of claws 4 of gravel bits are protruded from the container 3.
而してローラビットの外周に礫層ビットの爪を具備した
翼を角度をつけて複数本突設した本考案、買付コーン型
ローラビットに於ては、ロット管の下端に取り付け、ロ
ータリーテーブルの回転により回動しつつビット並にウ
ェイト重量をかけ、且地上のリバース機にてサクション
をかけ、或はエヤーリフトで水を循環せしめると翼に突
出した礫層ビットの爪にて玉石層に混在している玉石は
堀りおニされる。In the cone-type roller bit of the present invention, which has a plurality of blades with gravel bit claws protruding at an angle on the outer periphery of the roller bit, it is attached to the lower end of the rod pipe, and is attached to the rotary table. When the bit is rotated by the rotation of the bit and a weight similar to that of a bit is applied, suction is applied by a reverse machine on the ground, or water is circulated by an air lift, the gravel layer bit's claws protruding from the wings mix in the cobblestone layer. The cobblestones that are covered are dug.
この時ローラビット本体はコーン型で、翼には上反角が
ついているため掘削される穴底は中心が低くなった円錐
形となり、翼の爪にて堀におこされた玉石はビットの回
転により穴の中心に移動する。At this time, the roller bit body is cone-shaped, and the wings have dihedral angles, so the bottom of the hole being drilled is conical with a lower center, and the boulders raised in the trench by the claws of the wings are removed by the rotation of the bit. Move to the center of the hole.
この玉石は逃げを妨げられコーン型ローラビットの重量
をかけられつつ回転するローラカッタにより削りと、衝
撃並びに玉石相互の干渉によって衝撃圧路を繰り返して
所望の粒径に破壊されるものである。These boulders are prevented from escaping and are cut by a rotating roller cutter while being subjected to the weight of a cone-type roller bit, and are broken down to a desired particle size by repeating the impact pressure path due to impact and mutual interference between the boulders.
従って本考案よる時はコーン型ローラビットの外周に礫
層ビットの爪を突設した翼を上反角をつけて一体に設け
ているため軟弱な玉石層の地盤に於ても堀りおニされた
玉石はローラカッタ下面に導びかれ、確実に破砕される
ため循環水系統の配管を詰らせることなく円滑な掘削作
業が行えるものである。Therefore, according to the present invention, since the cone-type roller bit is integrally provided with dihedral-angled wings with protruding pawls of a gravel layer bit on the outer periphery of the cone roller bit, it is possible to dig even in soft cobblestone ground. The boulders are guided to the underside of the roller cutter and are reliably crushed, allowing smooth excavation work without clogging the pipes of the circulating water system.
第1図は本考案買付コーン型ローラビットの正面図、第
2図は同平面図、第3図は下面図である。
1・・・・・・本体、2・・・・・・カッターローラ、
3・・・・・・翼、4・・・・・・爪。FIG. 1 is a front view of the cone type roller bit of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a bottom view. 1...Main body, 2...Cutter roller,
3...Wings, 4...Claws.
Claims (1)
をつけて放射状に突設すると共にこの容具に礫層ビット
の爪を多数設けて成る買付コーン型ローラビット。This cone-type roller bit has a plurality of wings protruding radially from the outer periphery of the cone-type roller bit with a desired dihedral angle, and the container is provided with a large number of gravel bit claws.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14198479U JPS6033185Y2 (en) | 1979-10-13 | 1979-10-13 | Cone-shaped roller rabbit with wings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14198479U JPS6033185Y2 (en) | 1979-10-13 | 1979-10-13 | Cone-shaped roller rabbit with wings |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5659283U JPS5659283U (en) | 1981-05-21 |
JPS6033185Y2 true JPS6033185Y2 (en) | 1985-10-03 |
Family
ID=29373287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14198479U Expired JPS6033185Y2 (en) | 1979-10-13 | 1979-10-13 | Cone-shaped roller rabbit with wings |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6033185Y2 (en) |
-
1979
- 1979-10-13 JP JP14198479U patent/JPS6033185Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5659283U (en) | 1981-05-21 |
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