JP2021059885A - Drilling device, connector and drilling head - Google Patents

Drilling device, connector and drilling head Download PDF

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JP2021059885A
JP2021059885A JP2019184274A JP2019184274A JP2021059885A JP 2021059885 A JP2021059885 A JP 2021059885A JP 2019184274 A JP2019184274 A JP 2019184274A JP 2019184274 A JP2019184274 A JP 2019184274A JP 2021059885 A JP2021059885 A JP 2021059885A
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connecting portion
excavation head
rotary rod
female
head
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昌紀 秋山
Masanori Akiyama
昌紀 秋山
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KEIYOLEASE CO Ltd
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KEIYOLEASE CO Ltd
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Abstract

To provide a drilling head for various types of rotary rods in a drilling device.SOLUTION: A drilling device attaches a drilling head 6 to a lower end of a rotary rod 4 that is rotationally driven to drill. The rotary rod has a male connecting portion at an upper end and a female connecting portion at a lower end. The drilling head has a female connecting portion 26 formed at an upper end thereof. The rotary rod and the drilling head are connected by a connecting tool 8. The connecting tool includes a male connecting portion 16 connected to the female connecting portion at the lower end of the rotary rod and a male connecting portion 17 connected to the female connecting portion at the upper end of the excavation head.SELECTED DRAWING: Figure 2

Description

本発明は、回転駆動される回転ロッドの下端に掘削ヘッドを取り付けて掘削する掘削装置並びに、その連結具および掘削ヘッドに関する。 The present invention relates to an excavation device in which an excavation head is attached to the lower end of a rotary rod driven to excavate, and a connecting tool and an excavation head thereof.

掘削装置は、たとえば、特開２００８−５７３０６号公報（特許文献１）に記載のように、掘削ヘッドが回転駆動される回転ロッドの下端に取り付けられている。そして、従来の掘削ヘッドの構造を図４を用いて説明する。図４は従来の掘削ヘッドの正面図である。図４に図示するように、掘削ヘッド０１の上端の雄型の連結部０１ａを、回転ロッド０２の下端部の雌型の連結部に嵌込みピン止めしている。 The excavator is attached to the lower end of a rotary rod in which the excavation head is rotationally driven, for example, as described in Japanese Patent Application Laid-Open No. 2008-57306 (Patent Document 1). Then, the structure of the conventional excavation head will be described with reference to FIG. FIG. 4 is a front view of a conventional excavation head. As shown in FIG. 4, the male connecting portion 01a at the upper end of the excavation head 01 is fitted and pinned to the female connecting portion at the lower end of the rotary rod 02.

連結部０１ａは、掘削ヘッド０１の本体に溶接などで一体に形成されている。一方、掘削ヘッド０１の連結部０１ａが嵌まり込む回転ロッド０２の下端部の雌型の連結部は、種々の形状や大きさがある。そのため、回転ロッド０２の下端部の雌型の連結部の種々の形状や大きさに合わせて、種々の形状や大きさの連結部０１ａを有する掘削ヘッド０１を揃える必要があった。すなわち、連結部０１ａが嵌まり込む回転ロッド０２の下端部の雌型の連結部の形状や大きさがたとえば５種類あれば、５種類の掘削ヘッド０１が必要であった。そのため、ある回転ロッド０２に使用した掘削ヘッド０１を、別の回転ロッド０２には取り付けることができないことがあった。 The connecting portion 01a is integrally formed with the main body of the excavation head 01 by welding or the like. On the other hand, the female connecting portion at the lower end of the rotary rod 02 into which the connecting portion 01a of the excavation head 01 is fitted has various shapes and sizes. Therefore, it is necessary to align the excavation heads 01 having the connecting portions 01a having various shapes and sizes according to the various shapes and sizes of the female connecting portions at the lower end of the rotary rod 02. That is, if there are, for example, five types of female connecting portions at the lower end of the rotary rod 02 into which the connecting portion 01a is fitted, five types of excavation heads 01 are required. Therefore, the excavation head 01 used for one rotary rod 02 may not be attached to another rotary rod 02.

特開２００８−５７３０６号公報Japanese Unexamined Patent Publication No. 2008-57306

解決しようとする問題点は、掘削装置の掘削ヘッドにおいて、回転ロッドの下端部の連結部の形状や寸法などの種々の態様に応じて、適応する形状の連結部を有するものを多種用意する必要がある点である。 The problem to be solved is that it is necessary to prepare various drilling heads of a drilling apparatus having a connecting portion having an applicable shape according to various aspects such as the shape and dimensions of the connecting portion at the lower end of the rotary rod. There is a point.

本発明の掘削装置は、回転駆動される回転ロッド（４）の下端に掘削ヘッド（６）を取り付けて掘削する。この回転ロッドは、上端部に雄型の連結部が、また，下端部に雌型の連結部が形成されており、前記掘削ヘッドは、上端部に雌型の連結部（２６）が形成されており、前記回転ロッドと前記掘削ヘッドとが連結具（８）で接続されており、この連結具が、前記回転ロッドの下端部の雌型の連結部に接続される雄型の連結部（１６）と、前記掘削ヘッドの上端部の雌型の連結部に接続される雄型の連結部（１７）とを具備している。 In the excavation device of the present invention, an excavation head (6) is attached to the lower end of a rotary rod (4) that is rotationally driven for excavation. The rotary rod has a male connecting portion formed at the upper end portion and a female connecting portion formed at the lower end portion, and the excavation head has a female connecting portion (26) formed at the upper end portion. The rotary rod and the excavation head are connected by a connecting tool (8), and this connecting tool is connected to a female connecting portion at the lower end of the rotating rod (8). 16) and a male connecting portion (17) connected to a female connecting portion at the upper end of the excavation head.

また、掘削装置用連結具は、回転ロッドの下端部の雌型の連結部に接続される雄型の連結部と、掘削ヘッドの上端部の雌型の連結部に接続される雄型の連結部とを具備している。 Further, the connecting tool for the excavator is a male connecting portion connected to the female connecting portion at the lower end of the rotary rod and a male connecting portion connected to the female connecting portion at the upper end of the drilling head. It has a part.

さらに、掘削ヘッドは、回転駆動される回転ロッドの下端部に雌型の連結部が形成され、この回転ロッド下側に取り付けられる。この掘削ヘッドは、上端部に雌型の連結部が形成されて、連結具を介して前記回転ロッドに接続される。 Further, the excavation head is attached to the lower side of the rotary rod in which a female connecting portion is formed at the lower end of the rotary rod to be rotationally driven. A female connecting portion is formed at the upper end of the excavation head, and the excavation head is connected to the rotating rod via a connecting tool.

本発明によれば、回転ロッドと掘削ヘッドとが、連結具で接続されており、この連結具が、回転ロッドの下端部の雌型の連結部に接続される雄型の連結部と、掘削ヘッドの上端部の雌型の連結部に接続される雄型の連結部とを具備しているので、現場で使用される回転ロッドに応じた連結部を具備する連結具を選択して、この連結具を掘削ヘッドに取り付けることにより、１個の掘削ヘッドで、種々の回転ロッドに対応することができる。 According to the present invention, the rotary rod and the excavation head are connected by a connecting tool, and the connecting tool is connected to a male connecting portion connected to a female connecting portion at the lower end of the rotating rod, and excavation. Since it is provided with a male type connecting part connected to the female type connecting part at the upper end of the head, a connecting tool having a connecting part corresponding to the rotating rod used in the field is selected. By attaching the connector to the excavation head, one excavation head can handle various rotating rods.

図１は本発明における掘削ヘッドが取り付けられる掘削装置の側面図である。FIG. 1 is a side view of an excavator to which an excavation head is attached according to the present invention. 図２は掘削ヘッドおよび連結具の説明図である。FIG. 2 is an explanatory view of the excavation head and the connecting tool. 図３は連結具の説明図である。FIG. 3 is an explanatory diagram of the connector. 図４は従来の掘削ヘッドの正面図である。FIG. 4 is a front view of a conventional excavation head.

掘削装置において、多種の形態の回転ロッドに対応する掘削ヘッドを提供するという目的を、掘削ヘッドを、種々の連結部を有する連結具を介して回転ロッドに連結することにより実現した。 The purpose of providing an excavation head corresponding to various types of rotary rods in an excavator has been realized by connecting the excavation head to the rotary rod via a connector having various connecting portions.

次に、本発明における掘削装置、連結具および掘削ヘッドの一実施例について、図１ないし図３を用いて説明する。図１は本発明における掘削装置の側面図である。図２は掘削ヘッドおよび連結具の説明図である。図３は連結具の説明図である。なお、図１において、スクリュー板の図示は省略されている。図２では回転ロッドが二点鎖線で図示されている。また、図２の連結具は図３と同じ状態で図示されているとともに、本来見えない下部も実線で図示されている。図３では、連結具の上部の右側は輪郭のみが記載されている。 Next, an embodiment of the drilling apparatus, the connecting tool, and the drilling head in the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a side view of the drilling device according to the present invention. FIG. 2 is an explanatory view of the excavation head and the connecting tool. FIG. 3 is an explanatory diagram of the connector. In FIG. 1, the screw plate is not shown. In FIG. 2, the rotating rod is illustrated by a chain double-dashed line. Further, the connector of FIG. 2 is shown in the same state as that of FIG. 3, and the lower portion that is originally invisible is also shown by a solid line. In FIG. 3, only the contour is shown on the right side of the upper part of the connector.

まず始めに、掘削装置の全体構成を図１で説明する。
スクリューオーガ掘削装置は、走行車体１と、この走行車体１に立設しているリーダ２と、このリーダ２に上下動可能に取り付けられている電動モータなどの原動機３と、この原動機３に回転駆動される回転ロッドとしてのオーガ４と、このオーガ４の下端に設けられている掘削ヘッド６とを備えている。この掘削ヘッド６は、図３に図示する連結具８を介してオーガ４に接続されている。なお、走行車体１、リーダ２、原動機３およびオーガ４は、従来のものと同じ構造である。 First, the overall configuration of the drilling device will be described with reference to FIG.
The screw auger excavator rotates on the traveling vehicle body 1, the leader 2 standing on the traveling vehicle body 1, the prime mover 3 such as an electric motor attached to the leader 2 so as to be vertically movable, and the prime mover 3. It includes an auger 4 as a driven rotary rod and an excavation head 6 provided at the lower end of the auger 4. The excavation head 6 is connected to the auger 4 via a connector 8 shown in FIG. The traveling vehicle body 1, the leader 2, the prime mover 3 and the auger 4 have the same structure as the conventional ones.

オーガ４は、円柱状をしているとともに、その外周には図示しないスクリュー板が設けられている。また、オーガ４の内部には、中心軸に沿って、図示しない地盤改良材用流路が形成されている。さらに、オーガ４は、上下方向に複数のエレメント７で構成され、エレメント７を着脱することにより、その長さを調整することができる。エレメント７には、従来のものと同じ様に、上端部に雄型の連結部が、また，下端部に雌型の連結部が形成されている。そして、エレメント７の下端の雌型の連結部には、下側のエレメント７の上端部の雄型の連結部が着脱可能に接続される。最上端のエレメント７の上端部の雄型の連結部は、原動機３の下部の雌型の連結部に、着脱可能に接続される。そのため、エレメント７の上端部の雄型の連結部は、その形状や寸法などが、原動機３の雌型の連結部の形状や寸法などに依存して決定されている。 The auger 4 has a columnar shape, and a screw plate (not shown) is provided on the outer periphery thereof. Further, inside the auger 4, a flow path for a ground improvement material (not shown) is formed along the central axis. Further, the auger 4 is composed of a plurality of elements 7 in the vertical direction, and the length thereof can be adjusted by attaching and detaching the elements 7. The element 7 is formed with a male connecting portion at the upper end portion and a female connecting portion at the lower end portion, as in the conventional one. Then, a male connecting portion at the upper end of the lower element 7 is detachably connected to the female connecting portion at the lower end of the element 7. The male connecting portion at the upper end of the uppermost element 7 is detachably connected to the female connecting portion at the lower end of the prime mover 3. Therefore, the shape and dimensions of the male connecting portion at the upper end of the element 7 are determined depending on the shape and dimensions of the female connecting portion of the prime mover 3.

図２および図３に図示する連結具８は、上部および下部にそれぞれ雄型の連結部１６，１７が設けられている。雄型の連結部１６，１７は略六角柱の形状しているとともに、ピン止め部２１，２２が形成されている。上部の連結部１６の断面形状である六角形は、下部の連結部１７の断面形状である六角形と位相が略３０度ズレている。そして、連結具８の上部の連結部１６は、オーガ４のエレメント７の下側の雌型の連結部に接続され、一方、連結具８の下部の連結部１７は、掘削ヘッド６の雌型の連結部２６に接続される。上部の連結部１６は、接続されるオーガ４の構造に応じて、オーガ４のエレメント７の上側の雄型の連結部と同じ構造をしている。オーガ４のエレメント７の上側の雄型の連結部は種々あるので、それに対応するように、上部の連結部１６の構造も種々あり、その種類の数量の連結具８が用意される。 The connecting tool 8 shown in FIGS. 2 and 3 is provided with male connecting portions 16 and 17, respectively, at the upper part and the lower part. The male connecting portions 16 and 17 have a substantially hexagonal column shape, and pinning portions 21 and 22 are formed. The hexagon, which is the cross-sectional shape of the upper connecting portion 16, is approximately 30 degrees out of phase with the hexagon, which is the cross-sectional shape of the lower connecting portion 17. The upper connecting portion 16 of the connecting tool 8 is connected to the lower female connecting portion of the element 7 of the auger 4, while the lower connecting portion 17 of the connecting tool 8 is connected to the female mold of the excavation head 6. It is connected to the connecting portion 26 of. The upper connecting portion 16 has the same structure as the male connecting portion on the upper side of the element 7 of the auger 4, depending on the structure of the auger 4 to be connected. Since there are various male-shaped connecting portions on the upper side of the element 7 of the auger 4, there are various structures of the upper connecting portion 16 to correspond to the various male connecting portions, and a quantity of connecting portions 8 of that type is prepared.

掘削ヘッド６は、円柱状のロッド部３１、ロッド部３１の周囲に設けられたスクリュー板３２と、スクリュー板３２の下端に設けられた掘削爪１２とを具備している。そして、掘削ヘッド６の雌型の連結部２６に、連結具８の下部の雄型の連結部１７を嵌め込み、ピン止めする。すると、図４に図示する従来の掘削ヘッド０１とほぼ同じ構造となる。 The excavation head 6 includes a columnar rod portion 31, a screw plate 32 provided around the rod portion 31, and an excavation claw 12 provided at the lower end of the screw plate 32. Then, the male connecting portion 17 at the lower part of the connecting tool 8 is fitted into the female connecting portion 26 of the excavation head 6 and pinned. Then, the structure is almost the same as that of the conventional excavation head 01 shown in FIG.

この様に構成されている掘削ヘッド６や連結具８は、メンテナンス工場などに保管されている。そして、現場から掘削ヘッド６を使用する旨の連絡があると、保管している種々ある連結具８から、現場で使用されるオーガ４に応じた上部の雄型の連結部１６を有する連結具８を取り出す。選択された連結具８を掘削ヘッド６に接続し、ピン止めして一体にする。この連結具８と一体になった掘削ヘッド６を掘削現場に輸送し、従来の掘削ヘッドと同様にして、オーガ４の下端に取り付ける。 The excavation head 6 and the connector 8 configured in this way are stored in a maintenance factory or the like. Then, when the site informs that the excavation head 6 is to be used, the various connecting tools 8 that are stored have a connecting tool 16 that has an upper male connecting portion 16 according to the auger 4 used at the site. Take out 8. The selected connector 8 is connected to the excavation head 6 and pinned to be integrated. The excavation head 6 integrated with the connector 8 is transported to the excavation site and attached to the lower end of the auger 4 in the same manner as the conventional excavation head.

前述の様に、各種のオーガ４に対応する連結具８を選択し、この連結具８を掘削ヘッド６に取り付けることにより、１個の掘削ヘッド６で、各種のオーガ４に対応することができる。したがって、連結具８を用いない場合に比して、少ない数量の掘削ヘッド６で種々のオーガ４に対応が可能である。 As described above, by selecting the connecting tool 8 corresponding to various augers 4 and attaching the connecting tool 8 to the excavation head 6, one excavation head 6 can correspond to various augers 4. .. Therefore, it is possible to handle various augers 4 with a small number of excavation heads 6 as compared with the case where the connector 8 is not used.

また、掘削ヘッド６の連結部２６が雌型であるため、連結具８の雄型の連結部１７が嵌まり込み、組み立てられた時の連結具８の露出量が少なくなる。そのため、連結具８を取り付けたことによる外観への影響を極力防止することができる。 Further, since the connecting portion 26 of the excavation head 6 is female, the male connecting portion 17 of the connecting tool 8 is fitted, and the exposure amount of the connecting tool 8 when assembled is reduced. Therefore, it is possible to prevent the influence on the appearance due to the attachment of the connector 8 as much as possible.

以上、本発明の実施例を詳述したが、本発明は、前記実施例に限定されるものではなく、特許請求の範囲に記載された本発明の要旨の範囲内で、種々の変更を行うことが可能である。本発明の変更例を下記に例示する。
（１）連結部の構造や寸法などは、適宜変更可能である。 Although the examples of the present invention have been described in detail above, the present invention is not limited to the above-mentioned examples, and various modifications are made within the scope of the gist of the present invention described in the claims. It is possible. Examples of modifications of the present invention are illustrated below.
(1) The structure and dimensions of the connecting portion can be changed as appropriate.

連結具の上部の連結部を回転ロッドの連結部に応じたものにすることにより、掘削ヘッドを各種回転ロッドに連結することができるので、回転ロッドの下端部連結部の形状が種々ある掘削装置に適用することが最適である。 Since the excavation head can be connected to various rotating rods by making the connecting portion at the upper part of the connecting tool correspond to the connecting portion of the rotating rod, the excavator having various shapes of the lower end connecting portion of the rotating rod. It is best applied to.

４ オーガ（回転ロッド）
６ 掘削ヘッド
８ 連結具
１６ 連結具上部の雄型の連結部
１７ 連結具下部の雄型の連結部
２６ 掘削ヘッドの雌型の連結部 4 auger (rotating rod)
6 Excavation head 8 Connector 16 Male connection at the top of the connector 17 Male connection at the bottom of the connector 26 Female connection at the excavation head

Claims (3)

回転駆動される回転ロッドの下端に掘削ヘッドを取り付けて掘削する掘削装置において、
前記回転ロッドは、上端部に雄型の連結部が、また，下端部に雌型の連結部が形成されており、
前記掘削ヘッドは、上端部に雌型の連結部が形成されており、
前記回転ロッドと前記掘削ヘッドとが連結具で接続されており、
この連結具が、前記回転ロッドの下端部の雌型の連結部に接続される雄型の連結部と、前記掘削ヘッドの上端部の雌型の連結部に接続される雄型の連結部とを具備していることを特徴とする掘削装置。 In an excavation device that excavates by attaching an excavation head to the lower end of a rotary rod that is driven to rotate.
The rotary rod has a male connecting portion at the upper end and a female connecting portion at the lower end.
The excavation head has a female connecting portion formed at the upper end thereof.
The rotary rod and the excavation head are connected by a connector, and the rotary rod and the excavation head are connected by a connecting tool.
The connecting tool has a male connecting portion connected to a female connecting portion at the lower end of the rotary rod and a male connecting portion connected to a female connecting portion at the upper end of the excavation head. An excavator characterized by being equipped with. 回転ロッドの下端部の雌型の連結部に接続される雄型の連結部と、掘削ヘッドの上端部の雌型の連結部に接続される雄型の連結部とを具備していることを特徴とする掘削装置用連結具。 It is provided with a male connecting portion connected to the female connecting portion at the lower end of the rotary rod and a male connecting portion connected to the female connecting portion at the upper end of the excavation head. A characteristic connecting tool for excavators. 回転駆動される回転ロッドの下端部に雌型の連結部が形成され、この回転ロッド下側に取り付けられる掘削ヘッドにおいて、
上端部に雌型の連結部が形成されて、連結具を介して前記回転ロッドに接続されることを特徴とする掘削ヘッド。 In the excavation head attached to the lower side of the rotary rod, a female connecting portion is formed at the lower end of the rotary rod to be rotationally driven.
An excavation head characterized in that a female connecting portion is formed at an upper end portion and is connected to the rotating rod via a connecting tool.
JP2019184274A 2019-10-07 2019-10-07 Drilling device, connector and drilling head Pending JP2021059885A (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0681569A (en) * 1992-08-29 1994-03-22 Shinei Tec Kk Vibration absorbing device
JPH0813974A (en) * 1994-06-28 1996-01-16 Kencho Kobe:Kk Connecting structure for screw rod for underground boring machine
JPH09144466A (en) * 1995-11-27 1997-06-03 Asahi Chem Ind Co Ltd Expanding head for excavation
JPH09165741A (en) * 1995-12-19 1997-06-24 T & T:Kk Relatively rotating agitation mechanism of soil improvement device
JPH09217580A (en) * 1996-02-09 1997-08-19 Toho Kinzoku Kk Drilling tools and drilling method using drilling tool
JPH1150775A (en) * 1997-08-05 1999-02-23 Mitsubishi Materials Corp Connecting sleeve of drilling tool for crawler drill
JP2002097885A (en) * 2000-07-17 2002-04-05 Hilti Ag Excavating tool
JP2003301685A (en) * 2002-04-05 2003-10-24 Giken Seisakusho Co Ltd Connecting structure of auger
JP2004052282A (en) * 2002-07-17 2004-02-19 Giken Seisakusho Co Ltd Excavating tool
JP2011080348A (en) * 2009-09-08 2011-04-21 Geo Kizai:Kk Connecting structure of impact boring rod

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0681569A (en) * 1992-08-29 1994-03-22 Shinei Tec Kk Vibration absorbing device
JPH0813974A (en) * 1994-06-28 1996-01-16 Kencho Kobe:Kk Connecting structure for screw rod for underground boring machine
JPH09144466A (en) * 1995-11-27 1997-06-03 Asahi Chem Ind Co Ltd Expanding head for excavation
JPH09165741A (en) * 1995-12-19 1997-06-24 T & T:Kk Relatively rotating agitation mechanism of soil improvement device
JPH09217580A (en) * 1996-02-09 1997-08-19 Toho Kinzoku Kk Drilling tools and drilling method using drilling tool
JPH1150775A (en) * 1997-08-05 1999-02-23 Mitsubishi Materials Corp Connecting sleeve of drilling tool for crawler drill
JP2002097885A (en) * 2000-07-17 2002-04-05 Hilti Ag Excavating tool
JP2003301685A (en) * 2002-04-05 2003-10-24 Giken Seisakusho Co Ltd Connecting structure of auger
JP2004052282A (en) * 2002-07-17 2004-02-19 Giken Seisakusho Co Ltd Excavating tool
JP2011080348A (en) * 2009-09-08 2011-04-21 Geo Kizai:Kk Connecting structure of impact boring rod

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