JPH0738292U - Drilling blade mounting structure for auger drill - Google Patents

Drilling blade mounting structure for auger drill

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Publication number
JPH0738292U
JPH0738292U JP6943293U JP6943293U JPH0738292U JP H0738292 U JPH0738292 U JP H0738292U JP 6943293 U JP6943293 U JP 6943293U JP 6943293 U JP6943293 U JP 6943293U JP H0738292 U JPH0738292 U JP H0738292U
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JP
Japan
Prior art keywords
blade
blades
mounting
small
drill
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
Application number
JP6943293U
Other languages
Japanese (ja)
Inventor
和夫 柳原
一範 土井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Sharyo Ltd
Original Assignee
Nippon Sharyo Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Sharyo Ltd filed Critical Nippon Sharyo Ltd
Priority to JP6943293U priority Critical patent/JPH0738292U/en
Publication of JPH0738292U publication Critical patent/JPH0738292U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】 【目的】オーガドリルの掘削刃の取付を容易にすると共
に、取付強度や取付間隔の改善を図ったオーガドリルの
掘削刃取付構造を得る。 【構成】羽根16の各先端縁16a毎に設けられる複数
の掘削刃32が着脱可能に取り付けられる取付部34〜
36が形成された小羽根用ホルダ28が、1個のブロッ
クとして一体形成されている。そして、小羽根用ホルダ
28を羽根16の各先端縁16aに取付位置、取付角度
が正しい位置となるように位置決めして、溶接により固
着した。
(57) [Summary] [Purpose] To obtain an auger drill excavating blade mounting structure that facilitates mounting of an auger drill excavating blade and improves mounting strength and mounting interval. [Structure] A plurality of excavating blades 32 provided for each tip edge 16a of a blade 16 are detachably attached to a mounting portion 34 to.
The small blade holder 28 on which 36 is formed is integrally formed as one block. Then, the small blade holder 28 was positioned on each tip edge 16a of the blade 16 so that the mounting position and mounting angle would be correct, and fixed by welding.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、オーガドリルの先端部に複数の掘削刃を取り付けるオーガドリルの 掘削刃取付構造に関するものである。 The present invention relates to a drill blade mounting structure for an auger drill, in which a plurality of drill blades are mounted on the tip of the auger drill.

【0002】[0002]

【従来の技術】[Prior art]

従来より、オーガドリルでは、その先端部に超硬材料を用いて形成された複数 の掘削刃を取り付け、耐久性の向上を図っている。また、掘削刃の摩耗や損耗に よる掘削刃の交換を容易にするため、掘削刃は、回転軸に螺旋状に巻回された羽 根の先端縁にボルト等により着脱自在に取り付けたものが知られているが、オー ガドリルは複雑な形状をした溶接構造であり、また、大型であるため、羽根の先 端の機械加工が困難である。その為、羽根の先端への掘削刃の取付角度や取付位 置の精度が十分に確保できない場合があった。 Conventionally, in an auger drill, a plurality of drilling blades made of a superhard material are attached to the tip of the auger drill to improve durability. In addition, in order to facilitate exchanging the excavating blade due to wear or wear of the excavating blade, the excavating blade should be detachably attached to the tip edge of the blade spirally wound around the rotating shaft with bolts or the like. As is well known, auger drills have a complicated shape and a welded structure, and due to their large size, it is difficult to machine the blade tips. As a result, the angle of attachment of the excavating blade to the tip of the blade and the accuracy of the attachment position could not be sufficiently secured in some cases.

【0003】 そこで、1個の掘削刃を1個のホルダにボルト等により着脱自在に取り付け、 複数のホルダをオーガドリルの羽根の先端縁に、取付角度や取付位置を調整しな がらそれぞれ溶接することも考えられた。Therefore, one drilling blade is detachably attached to one holder with a bolt or the like, and a plurality of holders are welded to the tip edge of the blade of the auger drill while adjusting the attachment angle and the attachment position. It was also possible.

【0004】[0004]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら、こうしたオーガドリルの掘削刃取付構造では、オーガドリルの 羽根の先端に、1個1個のホルダをそれぞれ溶着したのでは、1個づつその取付 角度や取付位置の調整をしなければならず、位置決め作業が繁雑であると共に、 位置決めが困難であるという問題があった。 However, in such a drill blade mounting structure for an auger drill, if each holder is welded to the tip of the blade of the auger drill, the mounting angle and mounting position must be adjusted one by one. However, there is a problem that the positioning work is complicated and the positioning is difficult.

【0005】 また、掘削刃は、接近して設けられるので、それぞれのホルダの大きさには制 限があり、強度上の問題があると共に、各ホルダの全周を溶接するので、その溶 接代が必要となり、各掘削刃の最小間隔が制限されるという問題があった。 そこで本考案は上記の課題を解決することを目的とし、オーガドリルの掘削刃 の取付を容易にすると共に、取付強度や取付間隔の改善を図ったオーガドリルの 掘削刃取付構造を提供することにある。Further, since the excavating blades are provided close to each other, the size of each holder is limited, and there is a problem in strength, and since the entire circumference of each holder is welded, its welding However, there is a problem in that the minimum distance between the drilling blades is limited. Therefore, the present invention aims to solve the above problems, and to provide an auger drill excavating blade mounting structure that facilitates mounting of an auger drill excavating blade and improves mounting strength and mounting interval. is there.

【0006】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

かかる目的を達成すべく、本考案は課題を解決するための手段として次の構成 を取った。即ち、 回転軸に螺旋状に巻回された少なくとも2枚の羽根を有するオーガドリルの先 端部に複数の掘削刃を取り付けるオーガドリルの掘削刃取付構造において、 前記羽根の各先端縁毎に設けられる複数の掘削刃が着脱可能に取り付けられる ホルダを一体形成し、該各ホルダをそれぞれ前記羽根の各先端縁に溶着したこと を特徴とするオーガドリルの掘削刃取付構造の構成がそれである。 In order to achieve such an object, the present invention has the following configuration as means for solving the problems. That is, in a drill blade mounting structure for an auger drill, in which a plurality of drill blades are attached to a tip end portion of an auger drill having at least two blades spirally wound around a rotating shaft, each blade is provided at each tip edge of the blade. A plurality of drilling blades are detachably mounted on the holder, and each holder is welded to each tip edge of the blade. The structure of the drilling blade mounting structure of the auger drill is that.

【0007】[0007]

【作用】[Action]

前記構成を有するオーガドリルの掘削刃取付構造は、ホルダを各羽根の先端縁 に溶着することにより、羽根の先端縁毎の複数の掘削刃が先端縁に同時に取り付 けられる。また、各ホルダは、各羽根の先端縁毎に一体形成されるので、ホルダ の強度が確保されると共に、掘削刃の間隔を小さくすることができる。 In the drill blade mounting structure of the auger drill having the above structure, the plurality of drill blades for each tip edge of the blade can be simultaneously attached to the tip edge by welding the holder to the tip edge of each blade. Further, since each holder is integrally formed at each tip edge of each blade, the strength of the holder is secured and the interval between the excavating blades can be reduced.

【0008】[0008]

【実施例】【Example】

以下本考案の実施例を図面に基づいて詳細に説明する。 図1は本考案の一実施例としてのオーガドリルの掘削刃取付構造を適用したオ ーガドリルの正面図である。1は回転軸であり、本実施例では、大径軸部2と、 大径軸部2に連接された小径軸部4とを備えている。大径軸部2の上端には、フ ランジ6が回転軸1の軸方向と直角に溶接により固着されており、フランジ6と 回転軸1とは、更に溶着された複数のリブ8,10により強固に接続されている 。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of an auger drill to which an excavator blade mounting structure according to an embodiment of the present invention is applied. Reference numeral 1 denotes a rotary shaft, which in the present embodiment includes a large-diameter shaft portion 2 and a small-diameter shaft portion 4 connected to the large-diameter shaft portion 2. A flange 6 is fixed to the upper end of the large-diameter shaft portion 2 by welding at a right angle to the axial direction of the rotary shaft 1, and the flange 6 and the rotary shaft 1 are further welded by a plurality of ribs 8 and 10. It is firmly connected.

【0009】 大径軸部2には、螺旋状に2枚の大羽根12,14が180度の位相差でもっ て巻回されて、溶接により固着されている。また、小径軸部4にも、大羽根12 ,14に連接するようにして螺旋状に2枚の小羽根16,18が180度の位相 差でもって巻回されて、溶接により固着されている。Two large blades 12, 14 are spirally wound around the large-diameter shaft portion 2 with a phase difference of 180 degrees and fixed by welding. Further, two small blades 16 and 18 are spirally wound around the small-diameter shaft portion 4 so as to be connected to the large blades 12 and 14 with a phase difference of 180 degrees and fixed by welding. .

【0010】 大羽根12,14の先端縁12a,14aは、大径軸部2の軸方向と直交して 形成されており、先端縁12a,14aの大径軸部2側の一部に小羽根16,1 8が溶接により連接されている。そして、残りの両先端縁12a,14aには、 大羽根用ホルダ20,22がそれぞれ溶接により固着されており、大羽根用ホル ダ20,22には、それぞれ複数の掘削刃24,26が取り付けられている。The tip edges 12a, 14a of the large blades 12, 14 are formed orthogonally to the axial direction of the large-diameter shaft portion 2, and a small portion is formed on a part of the tip edges 12a, 14a on the large-diameter shaft portion 2 side. The blades 16 and 18 are connected by welding. Then, large blade holders 20 and 22 are fixed to the remaining both tip edges 12a and 14a by welding, and a plurality of excavating blades 24 and 26 are attached to the large blade holders 20 and 22, respectively. Has been.

【0011】 小羽根16,18は、その先端が小径軸部4の先端近傍に至るまで巻回されて おり、その先端縁16a,18aは、小径軸部4の軸方向と直交するように形成 されている。そして、この先端縁16a,18aには、小羽根用ホルダ28,3 0が溶接により固着されており、各小羽根用ホルダ28,30には、それぞれ複 数の掘削刃32,34が取り付けられている。The small blades 16 and 18 are wound so that their tips reach near the tips of the small diameter shaft portion 4, and the tip edges 16 a and 18 a are formed so as to be orthogonal to the axial direction of the small diameter shaft portion 4. Has been done. Small blade holders 28, 30 are fixed to the tip edges 16a, 18a by welding, and a plurality of excavating blades 32, 34 are attached to the small blade holders 28, 30, respectively. ing.

【0012】 大羽根用ホルダ20,22及び小羽根用ホルダ28,30の構成はほぼ同じで あるので、その詳細について、小羽根用ホルダ28を例に、図4によって説明す る。 小羽根用ホルダ28は、小羽根16の先端縁16aの長さとほぼ同じ長さで1 個のブロックとして一体に形成されている。小羽根用ホルダ28には、先端縁1 6aよりも広い接触面29が形成されており、接触面29を先端縁16aに接触 させた際に、溶接開先が形成されるように、この接触面29に連接して開先面3 3が形成されている。尚、小径軸部4側の端面31は、小径軸部4の外径に応じ て円弧状に形成されている。Since the large blade holders 20 and 22 and the small blade holders 28 and 30 have substantially the same configuration, the details thereof will be described with reference to FIG. 4 by taking the small blade holder 28 as an example. The small blade holder 28 is integrally formed as one block with a length substantially the same as the length of the tip edge 16a of the small blade 16. A contact surface 29 wider than the tip edge 16a is formed on the small blade holder 28, and this contact surface 29 is formed so that a welding groove is formed when the contact surface 29 is brought into contact with the tip edge 16a. A groove surface 33 is formed so as to be connected to the surface 29. The end surface 31 on the small diameter shaft portion 4 side is formed in an arc shape according to the outer diameter of the small diameter shaft portion 4.

【0013】 また、小羽根用ホルダ28には、小羽根16の先端縁16aに取り付ける掘削 刃32の数(本実施例では3個)に応じて、掘削刃32の幅とほぼ同じ幅でその 上下両側が窪まされて、3箇所に取付部34〜36が形成されている。各取付部 34〜36は、掘削刃32を取り付けた際に、掘削刃32が小径軸部4を中心と する円の接線方向を向くように形成されている。Further, in the small blade holder 28, the width of the small blade 16 is approximately the same as the width of the small cutting blade 32 in accordance with the number of the small cutting blades 32 attached to the tip edge 16 a of the small blade 16 (three in this embodiment). Both upper and lower sides are recessed, and mounting portions 34 to 36 are formed at three locations. Each of the mounting portions 34 to 36 is formed such that, when the digging blade 32 is attached, the digging blade 32 faces the tangential direction of a circle centered on the small diameter shaft portion 4.

【0014】 そして、各取付部34〜36には、その上下両側に、接線方向と平行な段壁3 4a〜36a(一部のみ図示する)が形成されて、掘削中の掘削刃32の回り止 めの働きをするようにされている。また、各取付部34〜36には、それぞれ4 個の貫通孔37〜39が穿設されている。Then, step walls 34 a to 36 a (only a part of which are shown) parallel to the tangential direction are formed on the upper and lower sides of each of the mounting portions 34 to 36, respectively, to surround the excavating blade 32 during excavation. It is supposed to act as a stoppage. Further, each of the mounting portions 34 to 36 is provided with four through holes 37 to 39, respectively.

【0015】 各掘削刃24,26,32,34は、同一形状であり、図5に示すように、そ の後側に取付部34〜36を挿入できるように窪まされた溝40が形成されてい る。また、各掘削刃24,26,32,34には、取付部34〜36の貫通孔3 7〜39に対応して、それぞれ4個の貫通孔44,46が穿設されると共に、一 方の貫通孔46に連接してほぼ4角の座ぐり孔48が形成されている。Each of the excavating blades 24, 26, 32, 34 has the same shape, and as shown in FIG. 5, a groove 40 is formed on the rear side thereof so that the mounting portions 34 to 36 can be inserted therein. ing. In addition, each of the excavating blades 24, 26, 32, 34 is provided with four through holes 44, 46 corresponding to the through holes 37-39 of the mounting portions 34-36, respectively. An approximately four-cornered spot facing hole 48 is formed so as to be connected to the through hole 46.

【0016】 そして、溝40に取付部34〜36を挿入して、貫通孔44,46、貫通孔3 7〜39にそれぞれスプリングワッシャ52を介してボルト50を挿入し(一部 のみ図示する)、ボルト50にナット54を螺入して固着すると共に、ボルト5 0を緩めることにより、取り外すことができるようにされている。その際、ボル ト50の六角頭部が座ぐり孔48内に入り込み、ボルト50の回り止めがなされ るように構成されている。Then, the mounting portions 34 to 36 are inserted into the groove 40, and the bolts 50 are inserted into the through holes 44 and 46 and the through holes 37 to 39 via the spring washers 52 (only a part is shown). The nut 54 is screwed into and fixed to the bolt 50, and the bolt 50 can be loosened to remove it. At this time, the hexagonal head portion of the bolt 50 enters the counterbore hole 48 to prevent the bolt 50 from rotating.

【0017】 また、小羽根用ホルダ28の先端縁16aへの取付は、接触面29を先端縁1 6aに接触させると共に、端面31を小径軸部4に接触させ、各掘削刃32の位 置が正しい位置となるように位置を決める。そして、先端縁16aと開先面33 により形成される溶接開先を溶接すると共に、その裏側をも溶接して、小羽根用 ホルダ28を先端縁16aに固着する。また、リブ56を小羽根用ホルダ28と 小羽根16とに溶接して、より強固に溶着する。The attachment of the small blade holder 28 to the tip edge 16a is performed by bringing the contact surface 29 into contact with the tip edge 16a and the end surface 31 into contact with the small-diameter shaft portion 4 so that the position of each excavating blade 32 can be adjusted. Position so that is the correct position. Then, the welding groove formed by the tip edge 16a and the groove surface 33 is welded, and the back side thereof is also welded to fix the small blade holder 28 to the tip edge 16a. Further, the ribs 56 are welded to the small blade holder 28 and the small blade 16 so that they are welded more firmly.

【0018】 他の小羽根用ホルダ30は、前記小羽根用ホルダ28と同じ形状であり、同様 にして先端縁18aに溶着される。また、両大羽根用ホルダ20,22も、同様 に、1個のブロックとして一体に形成されており、それぞれ4個の掘削刃24, 26が同様に着脱可能に取り付けられる。そして、大羽根12,14の先端縁1 2a,14aにそれぞれ同様にして溶着される。The other small blade holder 30 has the same shape as the small blade holder 28, and is similarly welded to the leading edge 18a. Similarly, the large blade holders 20 and 22 are also integrally formed as one block, and the four excavating blades 24 and 26 are similarly detachably attached thereto. Then, they are similarly welded to the leading edges 12a and 14a of the large blades 12 and 14, respectively.

【0019】 よって、一体形成された各大小羽根用ホルダ20,22,28,30を、各先 端縁12a,14a,16a,18aに溶着するので、個々の掘削刃24,26 ,32,34毎に取付位置や取付角度を調整する必要がなく、各先端縁12a, 14a,16a,18a毎にその取付位置や取付角度を調整すればよく、取付が 容易になる。Therefore, since the holders 20, 22, 28, 30 for large and small blades formed integrally are welded to the respective leading edges 12a, 14a, 16a, 18a, the individual excavating blades 24, 26, 32, 34 It is not necessary to adjust the mounting position and the mounting angle for each, and the mounting position and the mounting angle may be adjusted for each tip edge 12a, 14a, 16a, 18a, which facilitates the mounting.

【0020】 また、本実施例では、小径軸部4の先端にも、一体形成されたホルダ60が溶 接により固着されており、前述したと同じ形状の4個の掘削刃62が、先端縁1 2a,14a,16a,18aとは直交する方向に一列に並べられて、かつ、下 方に向けられて、図示しないボルト、ナットにより着脱可能に取り付けられてい る。Further, in this embodiment, the integrally formed holder 60 is fixed to the tip of the small-diameter shaft portion 4 by welding, and the four digging blades 62 having the same shape as described above are attached to the tip edge. 12a, 14a, 16a, 18a are arranged in a line in a direction orthogonal to the direction of 12a, 14a, 16a, 18a, and are directed downward, and are detachably attached by bolts and nuts not shown.

【0021】 次に、前述した実施例の作動について説明する。 フランジ6が図示しない駆動装置に締結され、回転駆動されると、各掘削刃2 4,26,32,34により掘削が行われる。掘削時の反力は、各掘削刃24, 26,32,34から各大小羽根ホルダ20,22,28,30に伝わり、大小 羽根12,14,16,18により受けられる。また、ホルダ60の掘削刃62 についても同様である。Next, the operation of the above-described embodiment will be described. When the flange 6 is fastened to a drive device (not shown) and driven to rotate, the excavation blades 24, 26, 32, 34 excavate. The reaction force during excavation is transmitted from the excavating blades 24, 26, 32, 34 to the large and small blade holders 20, 22, 28, 30 and received by the large and small blades 12, 14, 16, 18. The same applies to the digging blade 62 of the holder 60.

【0022】 各大小羽根ホルダ20,22,28,30は、一体形成されているので、十分 な強度を確保することができ、大きな掘削力にも耐え得る。また、各大小羽根ホ ルダ20,22,28,30に取り付ける掘削刃24,26,32,34の取付 間隔は、掘削刃24,26,32,34同士が干渉しない程度にまで、小さくす ることができる。Since the large and small blade holders 20, 22, 28, 30 are integrally formed, sufficient strength can be secured and a large excavating force can be endured. Further, the mounting intervals of the excavating blades 24, 26, 32, 34 attached to the large and small blade holders 20, 22, 28, 30 are made small to the extent that the excavating blades 24, 26, 32, 34 do not interfere with each other. be able to.

【0023】 以上本考案はこの様な実施例に何等限定されるものではなく、本考案の要旨を 逸脱しない範囲において種々なる態様で実施し得る。The present invention is not limited to the embodiments as described above, and can be implemented in various modes without departing from the scope of the present invention.

【0024】[0024]

【考案の効果】[Effect of device]

以上詳述したように本考案のオーガドリルの掘削刃取付構造は、各先端縁毎に 取り付けるホルダを一体形成したので、複数の掘削刃の取付が容易になると共に 、取付強度を確保することができ、また、各掘削刃の取付間隔を小さくすること ができるという効果を奏する。 As described above in detail, in the drill blade mounting structure for the auger drill of the present invention, the holder for mounting each tip edge is integrally formed. Therefore, it becomes easy to mount a plurality of drill blades and the mounting strength can be secured. It is also possible to achieve the effect that the mounting interval of each drilling blade can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例としてのオーガドリルの掘削
刃取付構造を適用したオーガドリルの正面図である。
FIG. 1 is a front view of an auger drill to which an excavator blade mounting structure according to an embodiment of the present invention is applied.

【図2】本実施例のオーガドリルの底面図である。FIG. 2 is a bottom view of the auger drill of this embodiment.

【図3】本実施例のオーガドリル取付構造の拡大側面図
である。
FIG. 3 is an enlarged side view of the auger drill mounting structure of the present embodiment.

【図4】本実施例のオーガドリル取付構造の拡大分解斜
視図である。
FIG. 4 is an enlarged exploded perspective view of the auger drill mounting structure of the present embodiment.

【図5】本実施例の掘削刃の詳細図である。FIG. 5 is a detailed view of an excavating blade of this embodiment.

【符号の説明】[Explanation of symbols]

1…回転軸 6…フランジ 1
2,14…大羽根 12a,14a…先端縁 16,18…小羽根 1
6a,18a…先端縁 20,22…大羽根用ホルダ 24,26,3
2,34…掘削刃 28,30…小羽根用ホルダ
1 ... Rotary shaft 6 ... Flange 1
2, 14 ... Large blade 12a, 14a ... Tip edge 16, 18 ... Small blade 1
6a, 18a ... Tip edge 20, 22 ... Large blade holder 24, 26, 3
2, 34 ... Excavating blade 28, 30 ... Holder for small blade

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 回転軸に螺旋状に巻回された少なくとも
2枚の羽根を有するオーガドリルの先端部に複数の掘削
刃を取り付けるオーガドリルの掘削刃取付構造におい
て、 前記羽根の各先端縁毎に設けられる複数の掘削刃が着脱
可能に取り付けられるホルダを一体形成し、該各ホルダ
をそれぞれ前記羽根の各先端縁に溶着したことを特徴と
するオーガドリルの掘削刃取付構造。
1. A drill blade mounting structure for an auger drill, wherein a plurality of drill blades are attached to a tip portion of an auger drill having at least two blades spirally wound around a rotating shaft, wherein each tip edge of the blade is An auger drill mounting structure for an auger drill, characterized in that a holder to which a plurality of drilling blades is detachably mounted is integrally formed, and each holder is welded to each tip edge of the blade.
JP6943293U 1993-12-27 1993-12-27 Drilling blade mounting structure for auger drill Pending JPH0738292U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6943293U JPH0738292U (en) 1993-12-27 1993-12-27 Drilling blade mounting structure for auger drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6943293U JPH0738292U (en) 1993-12-27 1993-12-27 Drilling blade mounting structure for auger drill

Publications (1)

Publication Number Publication Date
JPH0738292U true JPH0738292U (en) 1995-07-14

Family

ID=13402474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6943293U Pending JPH0738292U (en) 1993-12-27 1993-12-27 Drilling blade mounting structure for auger drill

Country Status (1)

Country Link
JP (1) JPH0738292U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002339680A (en) * 2001-05-21 2002-11-27 Toshiba Tungaloy Co Ltd Detachable earth auger bit and earth auger
JP2006348644A (en) * 2005-06-17 2006-12-28 Marutoku Kigyo:Kk Excavation head and excavator
KR20180012319A (en) * 2015-07-14 2018-02-05 로터 고교 가부시키가이샤 Flapper and pulp rotor blade structure
JP2019132041A (en) * 2018-01-31 2019-08-08 エポコラム機工株式会社 Excavation head
JP2020190100A (en) * 2019-05-21 2020-11-26 金属工具株式会社 Auger bit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002339680A (en) * 2001-05-21 2002-11-27 Toshiba Tungaloy Co Ltd Detachable earth auger bit and earth auger
JP4635375B2 (en) * 2001-05-21 2011-02-23 株式会社タンガロイ Detachable earth auger bit and earth auger
JP2006348644A (en) * 2005-06-17 2006-12-28 Marutoku Kigyo:Kk Excavation head and excavator
KR20180012319A (en) * 2015-07-14 2018-02-05 로터 고교 가부시키가이샤 Flapper and pulp rotor blade structure
JP2019132041A (en) * 2018-01-31 2019-08-08 エポコラム機工株式会社 Excavation head
JP2020190100A (en) * 2019-05-21 2020-11-26 金属工具株式会社 Auger bit
WO2020235407A1 (en) * 2019-05-21 2020-11-26 金属工具株式会社 Auger bit
KR20220002608A (en) * 2019-05-21 2022-01-06 긴조쿠 코구 가부시키가이샤 auger bit
CN113994067A (en) * 2019-05-21 2022-01-28 金属工具株式会社 Spiral drill bit
US11795765B2 (en) 2019-05-21 2023-10-24 Metal Tool Inc Auger bit

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