JPS59154221A - Earth auger device for pile driver - Google Patents
Earth auger device for pile driverInfo
- Publication number
- JPS59154221A JPS59154221A JP2683983A JP2683983A JPS59154221A JP S59154221 A JPS59154221 A JP S59154221A JP 2683983 A JP2683983 A JP 2683983A JP 2683983 A JP2683983 A JP 2683983A JP S59154221 A JPS59154221 A JP S59154221A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical casing
- screw blade
- ribbon
- casing
- shaped screw
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/22—Placing by screwing down
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は杭打投機におけるアースオーガ装置に関する。[Detailed description of the invention] The present invention relates to an earth auger device for pile driving speculation.
通常、礫層に杭を打設する場合、スクリュウ式アースオ
ーガ装置が使用されている。従来、第１８図に示すよう
に、このアースオーガ装置の１）におけるスクリュウ羽
根（３のは中心軸（財）を有すると共に筒状ケーシング
（ロ）内に回転自在に配設されたものである。しかし、
上記アースオーガ装置（８Ｌ）によると、筒状ケーシン
グ−内に取込むことが可能な礫層は、中心軸（財）があ
るため筒状ケーシング（財）内径の１／３程度であるた
め、適用礫層の範囲が限定され、例えば礫層が大きい場
合、他の工法と併用しなければならないという欠点があ
った。Usually, when driving piles into a gravel layer, a screw type earth auger device is used. Conventionally, as shown in Fig. 18, the screw blade (3) in 1) of this earth auger device has a central shaft (1) and is rotatably arranged in a cylindrical casing (2). .but,
According to the earth auger device (8L), the gravel layer that can be taken into the cylindrical casing is about 1/3 of the inner diameter of the cylindrical casing due to the central axis. The range of applicable gravel layers is limited, and for example, when the gravel layer is large, it has the disadvantage that it must be used in combination with other construction methods.
そこで、本発明は上記欠点を解消し得る杭打投機におけ
るアースオーガ装置を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an earth auger device for pile driving speculation that can eliminate the above-mentioned drawbacks.
即ち、本発明は杭打投機のり−ダに昇降自在にされた駆
動装置に筒状ケーシングの上端部を保持させ、上記筒状
ケーシング内に、Ｌ端が上記駆動装置の回転駆動軸に連
結されると共に下端が筒状ケーシングより下方に突出す
るリボン状スクリュウ羽根を配設したことを特徴とする
ものである。That is, in the present invention, the upper end of a cylindrical casing is held by a drive device that is movable up and down on a pile driving speculator, and the L end is connected to the rotational drive shaft of the drive device within the cylindrical casing. The casing is characterized by a ribbon-shaped screw blade whose lower end protrudes downward from the cylindrical casing.
かかる構成によると、筒状ケーシング内に配設されるス
クリュウ羽根をリボン状に構成したので、従来の中心軸
のあるスクリュウ羽根に比べて、大きな礫を取込むこと
ができ、従って杭打設可能な礫層範囲を拡大することが
できる。According to this configuration, since the screw blades arranged inside the cylindrical casing are configured in a ribbon shape, it is possible to take in larger gravel compared to conventional screw blades with a central shaft, and therefore pile driving is possible. The gravel layer range can be expanded.
以下、本発明の一実施例を図面に基づき説明する。第１
図〜第４図において、（］）は杭杭打様で、ベースマシ
ン（２）と、このベースマシン（２）に垂直に保持され
たり−ダ（３）と、このリーダ（３）に沿って昇降自在
にされたアースオーガ装置（４）とを有する。Hereinafter, one embodiment of the present invention will be described based on the drawings. 1st
In Figures to Figure 4, (]) is like a pile driving, with a base machine (2), held perpendicularly to this base machine (2), and a -da (3) and along this leader (3). It has an earth auger device (4) which can be raised and lowered freely.
上記アースオーガ装置（４）を詳細に説明すると、（５
）はり−ダ（３）にワイヤー（６）を介して昇降自在に
支持された駆動装置で、内部に電動機、減速機等から成
る回転駆動装！ （７）が設けられると共に、油圧シリ
ンダー、矢板チャック等からなる圧入装置（８）が設け
られている。この圧入装置（８）の下端には両端開放の
筒状ケーシング（９）の上端が連結され、またこの筒状
ケーシング（９）内には、上端が上記回転駆動装置（７
）の回転駆動軸０＠に連結されると共に下端が筒状ケー
シング（９）下端から突出するようにされた中心軸のな
いリボン状スクリュウ羽根０１）が回転ｉＪ能に配設さ
れている。なお、リボン状スクリュウ羽根０］）の突出
量はその１ピッチ分とされている。To explain the above earth auger device (4) in detail, (5)
) A drive device that is supported by a beamer (3) via a wire (6) so as to be able to rise and fall freely, and has a rotation drive device that includes an electric motor, a speed reducer, etc. inside! (7), and a press-fitting device (8) consisting of a hydraulic cylinder, a sheet pile chuck, etc. The upper end of a cylindrical casing (9) with both ends open is connected to the lower end of this press-fit device (8), and inside this cylindrical casing (9), the upper end is connected to the rotation drive device (7).
A ribbon-shaped screw blade 01) without a central axis is connected to the rotational drive shaft 0@ of the cylindrical casing (9) and has a lower end protruding from the lower end of the cylindrical casing (9). Note that the protrusion amount of the ribbon-shaped screw blade 0]) is one pitch thereof.
また、上記リボン状スクリュウ羽根αυの先端部は取替
可能にされ、第４図に示すように、その接続箇所（ト）
は筒状ケーシング（９）内に１ピッチ入った所にされて
おり、その接続部は第５図に示すように、それぞれリボ
ン状スクリュウ羽根（１１Ａ０１１Ｂ）の半分の厚みを
有する突出部（１２ＡＸ１２Ｂ）が設けられて、これら
突出部（１２Ａ）（１２Ｂ ）が互いにボルト（鴎によ
って接続されたものである。また、上記接続部は、第６
図に示すように、互いに両方のリボン状スクリュウ羽根
（１１’ＡＸ１１ ’Ｂ）の端部同士を重ね合わせてボ
ルト（１４）により接続したものでもよい。この場合、
両方のリボン状スクリュウ羽根（１１’ＡＸ１１’Ｂ）
には位置決めブロック（１５ＡＸ１５Ｂ）が固着される
。そして、更にリボン状スクリュウ羽根αυの最下端に
は、第７図及び第８図に示すように、リボン状スクリュ
ウ羽根０◇の傾斜とほぼ同一傾斜でもって掘削ピッ）
（ｌｔ９が複数個ボルトαＵこより取付けられている。In addition, the tip of the ribbon-shaped screw blade αυ is replaceable, and as shown in FIG.
are positioned one pitch inside the cylindrical casing (9), and their connecting parts are protrusions (12AX12B) each having half the thickness of the ribbon-shaped screw blade (11A011B), as shown in Figure 5. are provided, and these protruding portions (12A) (12B) are connected to each other by bolts.
As shown in the figure, the ends of both ribbon-shaped screw blades (11'AX11'B) may be overlapped and connected by bolts (14). in this case,
Both ribbon screw blades (11'AX11'B)
A positioning block (15AX15B) is fixed to. Furthermore, at the lowest end of the ribbon-shaped screw blade αυ, as shown in FIGS.
(Multiple lt9 are attached by bolts αU.
またリボン状スクリュウ羽根αυの内周面には、泥水注
入管α樟が配設されている。この泥水注入管０榎の上端
は回転駆動軸００の内部を介して泥水供給源（図示せず
）に接続されている。なお、６Ｊ二記筒状ケーシング（
９）の外側には、第８図に示すように、鋼矢板０りの取
付金具（４）が設けられている。Furthermore, a muddy water injection pipe αυ is arranged on the inner circumferential surface of the ribbon-shaped screw blade αυ. The upper end of this muddy water injection pipe 00 is connected to a muddy water supply source (not shown) through the inside of the rotary drive shaft 00. In addition, 6J2 cylindrical casing (
9), as shown in FIG. 8, a mounting bracket (4) for steel sheet piles is provided.
次に、杭即ち鋼矢板の打設手順について説明する。Next, the procedure for driving piles, that is, steel sheet piles, will be explained.
まず、筒状ケーシング（９）に鋼矢板０りを保持させ（
第９図額照）、次にリボン状スクリュウ羽根αυを回転
させると共に、アースオーガ装置￥１ （４）の自重及
びワイヤーｅｌ）のドラムに）による引込みにより、筒
状ケーシング（９）を鋼矢板（１１ごと地中に埋込んで
いき（第１０図及び第１１図参照）、所定深さまで埋込
まれると、リボン状スクリュウ羽根０１）を停止させて
、圧入装置（油圧シリンダー）（８）により鋼矢板α９
を地中に圧入する。そして、鋼矢板Ｑ優が圧入されると
、リボン状スクリュウ羽根（１１）及び筒状ケーシング
（９）を引抜けば鋼矢板θＱが地中に残って打設が完了
する。First, a steel sheet pile is held in the cylindrical casing (9) (
Next, by rotating the ribbon-shaped screw blade αυ and drawing the earth auger device (4) by its own weight and the wire (el) into the drum), the cylindrical casing (9) is moved from the steel sheet pile. (11 is buried in the ground (see Figures 10 and 11), and when it is buried to a predetermined depth, the ribbon-shaped screw blade 01) is stopped, and the press-fitting device (hydraulic cylinder) (8) Steel sheet pile α9
Press into the ground. When the steel sheet pile QY is press-fitted, when the ribbon-shaped screw blade (11) and the cylindrical casing (9) are pulled out, the steel sheet pile θQ remains in the ground and the driving is completed.
ところで、上記打設途中で礫層に入った場合、第１４図
（ａ）に示すように、従来の中心軸（３３）を有するス
クリュウ羽根（３のでは、中心軸（３３）があるため、
筒状ケーシング（３（１）内径の１／３程度の礫（ａ）
シか取込めない。例えば筒状ケーシング（３優内径を６
００−とすれば、取込み可能な礫層（ｄｉ）は下記のよ
うになる。By the way, if a gravel layer is entered during the above-mentioned pouring, as shown in FIG. 14(a), since the conventional screw blade (3) has a central axis (33),
Cylindrical casing (3 (1) Gravel (a) about 1/3 of the inner diameter
I can't take in anything. For example, a cylindrical casing (with an inner diameter of 6
00-, the gravel layer (di) that can be taken in is as follows.
ｃｂ−（筒状ケーシング内径−スクリュウ軸径） Ｘ
１．／２＝ （６００−２００） Ｘ １／２
＝ ２００簿薄
これに対して、本実施例のリボン状スクリュウ羽根０］
）においては、第１４図（ｂ）に示すように、上記従来
の礫（ａ）より大きい礫（ｂ）を取込むことができる。cb- (tubular casing inner diameter - screw shaft diameter)
1. /2 = (600-200)
), as shown in FIG. 14(b), it is possible to take in larger gravel (b) than the conventional gravel (a).
例えば筒状ケーシング（９）内径を６００闘とすれば、
取込可能な礫層（ｄ２）は下記のようになる。For example, if the inner diameter of the cylindrical casing (9) is 600mm,
The gravel layer (d2) that can be taken in is as follows.
ｄ２＝（筒状ケーシング内径−（筒状ケーシング内径−
リボン状スクリュウ羽根内径）ｘ ２Ａ ）＝ （６０
０−（６００−２００）Ｘ２／８ ）＝ ８８０ｍ肩
このように筒状ケーシング内取込み礫層は、従来のもの
に比べて１７倍となり、従って杭打設可能な礫層範囲を
拡大することができる。また、スクリュウ羽根先端部を
考えると、従来のものは、第１３図に示すように、地層
をできるだけかき回すために、スクリュウ羽根（Ｑｌが
２条にされると共にそれぞれ先端にはスクリュウ羽根（
８〕上面傾斜より下向きにされた掘削ビット（３５）が
取付けられている。d2 = (tubular casing inner diameter - (tubular casing inner diameter -
Ribbon-shaped screw blade inner diameter) x 2A) = (60
0 - (600 - 200) can. Also, considering the tip of the screw blade, as shown in Figure 13, in the conventional type, the screw blade (Ql) is made into two threads in order to stir up the strata as much as possible, and each tip has a screw blade (
8] A drilling bit (35) facing downward from the top surface is attached.
従−って、スクリュウ羽根■のの先端近傍部の羽根傾斜
角が２倍になっているので、掘削ビット（３５）で掘起
こした礫を筒状ケーシング（３優内にスムースに取込む
ことができなかったが、本実施例においては、リボン状
スクリュウ羽根０１）全体に亘って１条であるためと、
また掘削ビットＨの傾斜とリボン状スクリュウ羽根αυ
の傾斜とがほぼ一致されているためにより、礫取込みが
極めてスムースになる。このように、礫取込みがスムー
スになると、掘削速度が速くなり、杭打設作業の能率が
向上する。更に、スクリュウ羽根の先端部は摩耗が激し
いため取替え可能にされているが、第１３図に示すよう
に、従来のスクリュウ羽根（３２）先端部の接続箇所（
Ｂ）は、取付作業上、筒状ケーシング（財）外にあった
ため、接続部の破損事故（特に、礫層貫入時で礫層が筒
状ケーシング内径の１／３以上ある場合）が多く発生し
ていた。これに対して、本実施例においては、リボン状
スクリュウ羽根（１１）先端部の接続箇所（イ）を筒状
ケーシング（９）内に１ピッチ以上入ったところに設け
ているので、接続箇所に働く横荷重は筒状ケーシング（
９）内の２箇所でまず支持されるので、大きな力にはな
らず、従ってリボン状スクリュウ羽根αυ先端部におけ
る接続箇所での破損事故が少なくなる。Therefore, since the blade inclination angle near the tip of the screw blade (2) is doubled, the gravel dug up by the excavation bit (35) can be smoothly taken into the cylindrical casing (3). However, in this example, there is one thread over the entire ribbon-shaped screw blade 01).
Also, the inclination of the drilling bit H and the ribbon-shaped screw blade αυ
Since the slopes of the gravels are almost the same as the slopes of the gravels, the gravel can be taken in extremely smoothly. In this way, when gravel is taken in smoothly, the excavation speed becomes faster and the efficiency of pile driving work is improved. Furthermore, the tip of the screw blade (32) is replaceable because it is subject to severe wear, but as shown in Fig. 13, the connection point of the tip of the conventional screw blade (32)
B) was installed outside the cylindrical casing (foundation), so there were many accidents that caused the connection to break (especially when the gravel layer penetrated and the gravel layer was 1/3 or more of the inner diameter of the cylindrical casing). Was. On the other hand, in this embodiment, the connection point (A) of the tip of the ribbon-shaped screw blade (11) is provided at a place that is one pitch or more inside the cylindrical casing (9), so The lateral load acting on the cylindrical casing (
9) Since it is first supported at two points, it does not create a large force, which reduces the possibility of breakage at the connection point at the tip of the ribbon-shaped screw blade αυ.
ところで、上記実施例において、筒状ケーシング（９）
をただ地中に押込むようにしたが、例えば第１５図に示
すように、筒状ケーシング（４１）下端に掘削刃（蜘を
取付けて、リボン状スクリュウ羽根（４＠と互いに逆方
向に回転させるようにしたものでもよい。By the way, in the above embodiment, the cylindrical casing (9)
However, as shown in Fig. 15, for example, a digging blade (spider) is attached to the lower end of the cylindrical casing (41), and a ribbon-shaped screw blade (4@) is rotated in opposite directions to each other. It may also be
第１図〜第１２図は本発明の一実施例を示すもので、第
１図は杭打投機の全体側面図、第２図はアースオーガ装
置の一部切欠断面図、第８図は第２図のＩ−Ｉ矢視断面
図、第４図はリボン状スクリュウ羽根の先端拡大図、第
５図は第４図のＡ部拡大図、第６図はＡ部の変形例を示
す図、第７図は第４図の１−１矢視図、第８図は第７図
の１１−１矢視図、第９図〜第１２図は動作説明図、第
１８図は従来例のスクリュウ羽根の先端拡大図、第１４
図は従来例と本実施例との礫取込み状態を比較する図で
、（ａ）は従来例の飄合を示す図、（ｂ）（よンド実施
伊Ｕの場合を示す図、第１５図は本発明の他の実施例の
全体側面図、第１６図は第１５図のＣ部折二大図である
。
（１）・・・杭打投機、（３）・・・リーグ、（４）・
・・アースオーガ装置、（５）・・・駆動装置、（７）
・・・回転駆動装置、（８）・・・圧入装置、（９）・
・・筒状ケーシング、（１０）・・・１用紙駆動曲ガ、
（ｌη・・・リボン状スクリュウ羽根、０ゆ・・・掘ｍ
ｌ」ヒ’ｙ ）、（４１）・・・筒状ケーシング、（（
財）・・・ｔｉｉｉｌ削刃、（４の・・・＋）、Ｎン状
スクリュウ羽根
代理人 森 本 義 弘
ｕ’；２１Ｅ
ｒ−ゝ−−−−ｍ−
・η ノ ［ニベ１
１ ）
第 、ノ ｊ゛（］
第１３図
Ｊ、） ３．ｆ
第４図
第１１図 第１ノ図
第１４図
（２１，ン
（ｂ）Figures 1 to 12 show an embodiment of the present invention. Figure 1 is an overall side view of a pile driving device, Figure 2 is a partially cutaway sectional view of an earth auger device, and Figure 8 is a cross-sectional view of an earth auger device. 2 is a sectional view taken along the line I-I in FIG. 2, FIG. 4 is an enlarged view of the tip of the ribbon-shaped screw blade, FIG. 5 is an enlarged view of section A in FIG. 4, and FIG. 6 is a diagram showing a modification of section A. Fig. 7 is a view taken from arrow 1-1 in Fig. 4, Fig. 8 is a view taken from arrow 11-1 of Fig. 7, Figs. 9 to 12 are explanatory diagrams of operation, and Fig. 18 is a conventional screw. Enlarged view of the tip of the blade, No. 14
The figures are diagrams comparing the state of gravel uptake between the conventional example and the present example. (a) is a diagram showing the consolidation of the conventional example, (b) is a diagram showing the case of Yodo Implementation U, and Fig. 15 16 is a side view of another embodiment of the present invention, and FIG. 16 is a folded view of section C of FIG. 15. (1) Pile driving speculation, (3) League, (4 )・
...Earth auger device, (5)...Drive device, (7)
... Rotation drive device, (8) ... Press-fitting device, (9).
...Tubular casing, (10)...1 paper drive bending gear,
(lη...ribbon-shaped screw blade, 0y...drill m
l'hi'y), (41)... cylindrical casing, ((
property)...tiiil cutting blade, (4...+), N-shaped screw blade agent Yoshihiro Morimoto u'; 21E r-ゝ-----m- ・η ノ [Nibe 1 1) 3. f Fig. 4 Fig. 11 Fig. 1 Fig. 14 (21, n(b)
Claims (1)
状ケーシングの上端部を１呆持させ、と記筒状ケーシン
グ内に、上端が上記駆動装置の回転駆動軸に連結される
と共に下端が筒状ケーシングより下方に突出するリボン
状スクリュウ羽根を配設したことを特徴とする杭打投機
におけるアースオーガ装置。1. The upper end of the cylindrical casing is held by a drive device that can be raised and lowered freely in the league of the pile driver, and inside the cylindrical casing, the upper end is connected to the rotational drive shaft of the drive device. An earth auger device for pile driving speculation, characterized by having a ribbon-shaped screw blade whose lower end protrudes below a cylindrical casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2683983A JPS59154221A (en) | 1983-02-18 | 1983-02-18 | Earth auger device for pile driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2683983A JPS59154221A (en) | 1983-02-18 | 1983-02-18 | Earth auger device for pile driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59154221A true JPS59154221A (en) | 1984-09-03 |
Family
ID=12204432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2683983A Pending JPS59154221A (en) | 1983-02-18 | 1983-02-18 | Earth auger device for pile driver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59154221A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022112682A (en) * | 2021-01-22 | 2022-08-03 | 株式会社不動テトラ | Ground improvement device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5197203A (en) * | 1975-02-24 | 1976-08-26 | Aasuoogaayo keeshingu |
-
1983
- 1983-02-18 JP JP2683983A patent/JPS59154221A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5197203A (en) * | 1975-02-24 | 1976-08-26 | Aasuoogaayo keeshingu |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022112682A (en) * | 2021-01-22 | 2022-08-03 | 株式会社不動テトラ | Ground improvement device |
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