JPS62107107A - Drilling rig for enlarging bottom in piling foundation - Google Patents
Drilling rig for enlarging bottom in piling foundationInfo
- Publication number
- JPS62107107A JPS62107107A JP24271085A JP24271085A JPS62107107A JP S62107107 A JPS62107107 A JP S62107107A JP 24271085 A JP24271085 A JP 24271085A JP 24271085 A JP24271085 A JP 24271085A JP S62107107 A JPS62107107 A JP S62107107A
- Authority
- JP
- Japan
- Prior art keywords
- self
- opening
- blades
- pin
- hole
- 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.)
- Pending
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は場所打ち鉄筋コンクリートの基礎杭の最先端部
坑内を拡底するための装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for bottom widening the top end of a cast-in-place reinforced concrete foundation pile.
本発明の主たる目的は拡底掘削装置の構成を簡素化し、
耐久性の持続と、他に特別な掘削機を使用することなく
現場で使用中の掘削用アースドリル機をそのまぎ使用し
施工時間の短縮と正確な拡底孔を形成することにある。The main purpose of the present invention is to simplify the configuration of bottom-expanding drilling equipment,
The aim is to maintain durability, and to use the earth drill machine currently in use at the site without using any other special excavator, thereby shortening construction time and forming accurate bottom-expanded holes.
従来、基礎杭の施工方法は無騒音無振動工法としてアー
スドリル機で坑を穿ってその内にコンクリートを流し込
んで基礎杭となす工法が特に都市貴地で施工されている
が、殆どが円柱状に坑を穿って円柱状の杭となすため杭
径と土質によって計算された地盤支持力に限定され、基
礎杭本体の軸方向に対する許容応力を残存させたまま無
駄な杭が使用されている。Traditionally, foundation piles have been constructed using a noiseless and vibration-free method in which a hole is drilled with an earth drill machine and concrete is poured into the hole to form the foundation pile, especially in urban areas. Because the pile is made into a cylindrical pile by drilling a hole in the pile, the ground bearing capacity is limited to the one calculated based on the pile diameter and soil quality, and wasteful piles are used, leaving the allowable stress in the axial direction of the foundation pile itself.
近年建築物の高層化大型化並びに柔軟地盤への建物の進
出により、本件出願に係る基礎杭の先端部位拡底工法が
開発され各種の掘削拡底機が使用されているが何れも大
規模な構造のものであり。In recent years, as buildings have become taller and larger, and buildings have moved onto soft ground, the method of bottom widening the tips of foundation piles has been developed, and various types of excavating and bottom widening machines have been used. It is a thing.
現場への搬入及び設置に関して苦渋を呈しており、且つ
、複雑な機構となっている為に高額な装置となっている
。。It is difficult to transport and install it to the site, and it is an expensive device because it has a complicated mechanism. .
即ち、建設現場での機械的なトラブルを最小限に押える
必要があると共に使用時に於ける取り扱いをできるだけ
簡素化する必然性が現存する。That is, there is a need to minimize mechanical troubles at construction sites, and a necessity to simplify handling during use as much as possible.
本発明は掘削を行ったアースドリル機の回転軸に係止板
を固着し着脱自在と成したものであって、別体の電動機
、油圧、空圧等の動力を必要とせず動力源はアースドリ
ル機の動力を活用したものであり、大規模な他の拡底掘
削用機械装置は不要としたものである。In the present invention, a locking plate is fixed to the rotating shaft of an earth drill machine that performs excavation and can be attached and detached freely, and the power source is grounded without requiring a separate electric motor, hydraulic power, pneumatic power, etc. It utilizes the power of a drill machine, eliminating the need for other large-scale bottom-expanding machinery.
本発明の構成は、アースドリル機の回転軸１先端に設け
たドリリングバケット２の上方回転軸１外周へ、複数枚
の係止板３の一側辺を各々の係止板が放射状に成るよう
に固着し、該各偶止板３へ自開羽４の固定用の固定穴５
を穿設し、自開羽４は下端に掘削刃６を形成し、他端部
位へ前記係止板と固定する穴７を穿ち、固定用ピン８を
前記各穴５．７へ挿通させて開閉自在に固定し、各々の
自開羽４と回転軸１との間へキックバネ９、又は板バネ
を各々設け、前記各々の係止板３へ複数個の調整用ピン
穴１０と調整用ピン１１とから成る自開羽角度調整機構
と、自開羽閉羽時の係止用ピン穴１２とピン１３とから
成る係止用機構を形成した構成である。The configuration of the present invention is such that one side of a plurality of locking plates 3 is arranged radially toward the outer periphery of the upper rotating shaft 1 of a drilling bucket 2 provided at the tip of a rotating shaft 1 of an earth drill machine. and fixing holes 5 for fixing the self-opening blades 4 to each stop plate 3.
The self-opening wing 4 has a digging blade 6 formed at its lower end, a hole 7 for fixing to the locking plate at the other end, and a fixing pin 8 is inserted into each hole 5.7. A kick spring 9 or a plate spring is provided between each self-opening blade 4 and the rotating shaft 1, and a plurality of adjustment pin holes 10 and adjustment pins are provided in each of the locking plates 3. 11, and a locking mechanism consisting of a pin hole 12 and a pin 13 for locking when the self-opening blades are closed.
以下、図面に基づいて本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail based on the drawings.
第１図は本発明の自開羽を３枚とした実施例であり、説
明のため細部を省略した断面図であって地中に於いて自
問羽が全開状態にならた状態を表し、第２図は第１図の
Ａ−Ａ線断面図であり、第３図は自開羽の収納状態を実
線で表し、開羽状態を点線で表したものである。FIG. 1 shows an embodiment of the present invention in which three self-opening wings are used, and is a cross-sectional view with details omitted for explanation, showing the state in which the self-opening wings are fully opened in the ground. FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. 3 shows the retracted state of the self-opening blades with solid lines, and the open state with dotted lines.
アースドリル機（図示せず）回転軸１の最下端部に取り
付けられたドリリングバケット２は掘削した土砂を坑内
より搬出する為のものであり、該ドリリングバケット２
へ掘削した土砂を落し入れるに充分な間隔を置いた回転
軸１の上方外周へ、第２図で示すように複数枚の実施例
では３枚の縦長の係止板３の一側辺を各々の係止板３が
放射状に成るように固着し、該各偶止板３の上辺部位の
ほぼ中央部に自開羽４の固定用の固定穴５を穿設し、自
開羽４は下端に坑底部の柔軟な土砂を拡底掘削するため
の掘削刃６を設け、該掘削刃６は係止板３の下辺より下
方へ位置するように、他端部位へ前記係止板３と固定す
る固定穴７を穿ち、固定用ピン８を前記各穴５．７へ挿
通させて開閉自在に固定したものである。A drilling bucket 2 attached to the lowest end of the rotating shaft 1 of an earth drill machine (not shown) is used to carry out excavated earth and sand from the mine.
As shown in FIG. The locking plates 3 of the locking plates 3 are fixed in a radial manner, and a fixing hole 5 for fixing the self-opening blades 4 is bored at approximately the center of the upper side of each locking plate 3, and the self-opening blades 4 are fixed at the lower end. A digging blade 6 for bottom-expanding the soft earth and sand at the bottom of the pit is provided, and the digging blade 6 is fixed to the locking plate 3 at the other end so as to be located below the lower side of the locking plate 3. A fixing hole 7 is drilled, and a fixing pin 8 is inserted into each hole 5.7 to fix it so that it can be opened and closed.
次いで、前記各々の自開羽４と回転軸１との間へ自開羽
４を外方向に弾性による押力を与えるキックバネ９．又
は板バネを各々設け、開羽時に自開羽４下端の掘削刃６
がケーシング管１４外周より外方へ突出させて坑の最底
部の側周辺の拡底掘削を行う物であり、前記各々の係止
板３の固定穴５の外側寄り下方位置へ複数個の調整用ピ
ン穴ｌＯを穿ち、該ピン穴１０に突出させて挿入させる
調整用ピン１１とから成る自開羽角度調整機構と、該ピ
ン穴１０下方へ自開羽閉羽時の係止用ピン穴１２と係止
用ピン１３とから成る係止用機構を形成したものである
。Next, a kick spring 9 is provided between each of the self-opening blades 4 and the rotating shaft 1 to elastically push the self-opening blades 4 outward. Alternatively, a leaf spring may be provided for each, and the excavation blade 6 at the lower end of the self-opening blade 4 when the blade opens.
is a device that protrudes outward from the outer periphery of the casing pipe 14 to perform bottom-expanding excavation around the bottom side of the pit, and a plurality of adjusting holes are positioned downwardly toward the outside of the fixing holes 5 of each of the locking plates 3. A self-opening blade angle adjustment mechanism consisting of an adjustment pin 11 that is drilled in a pin hole 10 and inserted into the pin hole 10 so as to protrude into the pin hole 10, and a pin hole 12 for locking when the self-opening blades are closed when the self-opening blades are closed below the pin hole 10. A locking mechanism consisting of a locking pin 13 and a locking pin 13 is formed.
固定穴５と自開羽４を任意の開羽角度を既定せしめる複
数個の調整用ピン穴１０を穿設し、即ち、段階的に径を
大きくしながら掘削したり、必要とする拡底孔の径に応
じて、その都度適宜な調整用ピン穴１０を使用し調整用
ピン１１を突出させて挿入固定させて拡底自開羽４の第
３図に各点線で図示の如く開角度を決定するものであり
、キックバネ９又は板バネは適宜な方法で各自開羽４と
回転軸１との間に形成し、常時外方へ向かって自開羽４
を押力せしめ前記拡底孔の所定の大きさによって各々の
調整用ピン１１に達するまでバネの反発を押力によって
自動的に開羽する構造としたものである。A plurality of adjustment pin holes 10 are drilled to set the fixed hole 5 and the self-opening blade 4 to an arbitrary opening angle, that is, the hole can be drilled while increasing the diameter in stages, or the hole with the required bottom expansion can be drilled while increasing the diameter in stages. Depending on the diameter, use the appropriate adjustment pin hole 10 each time, insert and fix the adjustment pin 11 to protrude, and determine the opening angle as shown by the dotted lines in FIG. 3 of the enlarged bottom self-opening wing 4. The kick spring 9 or the leaf spring is formed between the self-opening blades 4 and the rotating shaft 1 by an appropriate method, and the self-opening blades 4 are always directed outward.
The structure is such that the repulsion of the spring is automatically opened by the pushing force until each adjusting pin 11 is reached depending on the predetermined size of the enlarged bottom hole.
続いて本装置の掘削工程とその効果を説明する。Next, the excavation process of this equipment and its effects will be explained.
地表面よりの掘削は、アースドリル機のドリリングバケ
ット２で所定の深度に迄掘削し、従来の施工法通りケー
シング管１４を順次建込み、アースドリル機の回転軸１
を引き上げる。次にアースドリル機パケット２の稍々上
部位の回転軸１へ固着された係止板３に固定用ピン８で
固定した拡底自開羽４を係止用機構の係止用ピン１３で
係止させ、前記ケーシング管１４内へ３枚の自開羽４の
下端部より挿入する。次に係止用ピン１３を引き抜いて
、ケーシング管１４内を下方へゆっくりとスライドさせ
ながら下降させてケーシング管１４最下端迄で到達させ
る。該管１４の端部に至った自開羽４は、係止板３に予
め装着したキックバネ９又は板バネの押圧力に依って自
動的に徐々に開羽し、回転軸１を回転させることによっ
て拡底孔の掘削を行うものであり、土砂等のスライムの
排出のため適宜回転軸１をドリリングバケット２と共に
引き上げるが自開羽４はケーシング管１４の下端で押さ
れて自動的に閉羽しケーシング管内径より小さくなり引
き上げられる。前記の工程を何度も繰返し行い所定の角
度まで自開羽角度調整機構で自開羽４を拡げ拡底孔の掘
削を完了する。For excavation from the ground surface, the drilling bucket 2 of the earth drill machine is used to excavate to a predetermined depth, and the casing pipes 14 are sequentially built as per the conventional construction method.
pull up. Next, the enlarged bottom self-opening wing 4 is fixed to the locking plate 3 fixed to the rotating shaft 1 at the slightly upper part of the earth drill packet 2 with the fixing pin 8, and is locked with the locking pin 13 of the locking mechanism. Then, the three self-opening blades 4 are inserted into the casing pipe 14 from the lower ends thereof. Next, the locking pin 13 is pulled out and slowly slid downward in the casing pipe 14 until it reaches the lowest end of the casing pipe 14. The self-opening blades 4 that have reached the end of the tube 14 are automatically gradually opened by the pressing force of a kick spring 9 or a leaf spring installed in advance on the locking plate 3, and the rotating shaft 1 is rotated. The rotary shaft 1 is pulled up along with the drilling bucket 2 as needed to discharge slime such as earth and sand, but the self-opening wings 4 are pushed by the lower end of the casing pipe 14 and automatically close. It becomes smaller than the inner diameter of the casing pipe and is pulled up. The above steps are repeated many times, and the self-opening blades 4 are expanded to a predetermined angle using the self-opening blade angle adjustment mechanism, and the drilling of the bottom enlarged hole is completed.
以上説明した如く本装置は、何ら他の原動力を使用する
ことなく、掘削に使用中のアースドリル機の回転軸に複
数枚の係止板と、該板に固定した自開羽と、キックバネ
又は板バネを装着し、調整用ピンを打ち込む機構であり
極めて単純化簡易化したことによって、機械的トラブル
を皆無と成し取扱も極めて容易と成したこともので、工
事関係者の熟練者を必要とせず非熟練者であっても使用
中のアースドリル機の掘削工法を継続するのみで所定の
拡底掘削工事が行え廉価で提供できる装置である。As explained above, this device uses a plurality of locking plates on the rotating shaft of an earth drill machine being used for excavation, self-opening blades fixed to the plates, and a kick spring or The mechanism is a mechanism in which a leaf spring is attached and an adjustment pin is driven in. Due to its extremely simple design, there are no mechanical problems and it is extremely easy to handle, requiring experienced construction personnel. This device allows even unskilled workers to carry out specified bottom expansion excavation work by simply continuing the excavation method of the earth drill machine in use, and can be provided at a low price.
第１図は本発明の詳細な説明のための細部を省略した断
面図。第２１ｉ！ｌは第１図のＡ−Ａ＠の断面図。第３
図は本装置の要部を示し実線は自開羽の収納状態、点線
はさめ開羽状態を表す。
１−回転軸、２−ドリリングバケット、３−係止板、４
−自開羽、５−係止板の固定穴、６−掘削刃、７−白開
羽の固定穴、８−固定用ピン、９−キックバネ、１０−
調整用ピン穴、１１−調整用ピン。
１２−係止用ピン穴、１３−係止用ピン、１４−ケーシ
ング管。
特許出願人 春 日 磐 泉 株式会社代表取締役 春
日 栄 吉
図 面
第 １ 図
］
１ ！１＝−，−−
−Ｊ
第 ２ ■
第３図FIG. 1 is a sectional view with details omitted for detailed explanation of the present invention. 21st i! 1 is a cross-sectional view taken along line A-A@ in FIG. Third
The figure shows the main parts of the device, and the solid line represents the retracted state of the self-opening blades, and the dotted line represents the open state of the blades. 1-rotating shaft, 2-drilling bucket, 3-locking plate, 4
- Self-opening wing, 5- Fixing hole of locking plate, 6- Drilling blade, 7- Fixing hole of white wing, 8- Fixing pin, 9- Kick spring, 10-
Adjustment pin hole, 11-Adjustment pin. 12-locking pin hole, 13-locking pin, 14-casing pipe. Patent Applicant Kasuga Iwaizumi Representative Director Kasuga Sakaekichi Figure 1] 1! 1=-,--
-J Chapter 2 ■ Figure 3
Claims (3)
転軸の先端へドリリングバケットを設けたアースドリル
機において、 前記アースドリル機の回転軸先端のドリリングバケット
へ掘削した土砂を落し込むに充分な間隔を置いた回転軸
の上方外周へ、複数枚の縦長の係止板の一側辺を各々の
係止板が放射状に成るように固着し、該各係止板上辺部
位へ自開羽固定用の固定穴を穿設し、自開羽は下端に掘
削刃を設け、該掘削刃が係止板の下辺より下方へ位置す
るように他端部位へ前記係止板と固定する穴を穿ち、固
定用ピンを前記各穴へ挿通させて開閉自在に固定したこ
とを特徴とする基礎杭に於ける拡底掘削装置。(1) In an earth drilling machine equipped with a drilling bucket at the tip of a rotating shaft for excavating foundation piles at a construction site, the excavated earth and sand is dropped into the drilling bucket at the tip of the rotating shaft of the earth drilling machine. One side of a plurality of vertically elongated locking plates is fixed to the upper outer periphery of the rotating shaft with sufficient spacing between the two, so that each locking plate forms a radial shape, and the upper side of each locking plate is attached to the upper side of the locking plate. A fixing hole for fixing the opening is made, and a digging blade is provided at the lower end of the self-opening blade, and it is fixed to the locking plate at the other end so that the digging blade is located below the lower side of the locking plate. 1. A bottom-expanding excavation device for foundation piles, characterized in that a hole is drilled and a fixing pin is inserted into each hole and fixed so as to be openable and closable.
ネを各々設け、開羽時に自開羽下端の掘削刃がケーシン
グ管の外周より突出させることを特徴とする特許請求範
囲第１項記載の基礎杭に於ける拡底掘削装置。(2) A patent claim characterized in that a self-opening or leaf spring is provided between each of the self-opening blades and the rotating shaft, and when the blades are opened, the digging blade at the lower end of the self-opening blade protrudes from the outer periphery of the casing pipe. A bottom-expanding excavation device for foundation piles as described in Scope 1.
複数個の調整用ピン穴を穿ち、該ピン穴に突出させて挿
入させるピンとから成る自開羽角度調整機構と、該ピン
穴下方へ自開羽閉羽時の係止用ピン穴とピンとから成る
係止用機構を形成したことを特徴とする特許請求範囲第
１項記載の基礎杭に於ける拡底掘削装置。(3) A self-opening blade angle adjustment mechanism comprising a plurality of adjustment pin holes drilled in a lower position toward the outside of the fixing hole of each of the locking plates, and a pin inserted into the pin hole so as to protrude from the pin hole, and the pin A bottom-expanding excavation device for a foundation pile according to claim 1, characterized in that a locking mechanism consisting of a pin hole and a pin for locking when the self-opening blades are closed is formed below the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24271085A JPS62107107A (en) | 1985-10-31 | 1985-10-31 | Drilling rig for enlarging bottom in piling foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24271085A JPS62107107A (en) | 1985-10-31 | 1985-10-31 | Drilling rig for enlarging bottom in piling foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62107107A true JPS62107107A (en) | 1987-05-18 |
Family
ID=17093091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24271085A Pending JPS62107107A (en) | 1985-10-31 | 1985-10-31 | Drilling rig for enlarging bottom in piling foundation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62107107A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015145559A (en) * | 2014-01-31 | 2015-08-13 | 中日本高速道路株式会社 | Anchor hole diameter expansion device, anchor hole diameter expansion method employing the device, and expansion anchor fixing structure |
| KR20200043675A (en) * | 2018-10-18 | 2020-04-28 | 한국생산기술연구원 | Apparatus for forming notches in drilling hole which help the development and control of tensile cracks in rock and, methods for the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53125302A (en) * | 1977-04-07 | 1978-11-01 | Marugo Kk | Method of operating largeediameter earth drill |
| JPS57104789A (en) * | 1980-12-22 | 1982-06-29 | Tousuke Shimanuki | Drilling method and apparatus |
| JPS59397U (en) * | 1982-06-25 | 1984-01-05 | スズキ株式会社 | Outboard motor mounting structure |
-
1985
- 1985-10-31 JP JP24271085A patent/JPS62107107A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53125302A (en) * | 1977-04-07 | 1978-11-01 | Marugo Kk | Method of operating largeediameter earth drill |
| JPS57104789A (en) * | 1980-12-22 | 1982-06-29 | Tousuke Shimanuki | Drilling method and apparatus |
| JPS59397U (en) * | 1982-06-25 | 1984-01-05 | スズキ株式会社 | Outboard motor mounting structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015145559A (en) * | 2014-01-31 | 2015-08-13 | 中日本高速道路株式会社 | Anchor hole diameter expansion device, anchor hole diameter expansion method employing the device, and expansion anchor fixing structure |
| KR20200043675A (en) * | 2018-10-18 | 2020-04-28 | 한국생산기술연구원 | Apparatus for forming notches in drilling hole which help the development and control of tensile cracks in rock and, methods for the same |
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