JP3088981B2 - Co-rotation prevention winged drilling stirring device - Google Patents

Co-rotation prevention winged drilling stirring device

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Publication number
JP3088981B2
JP3088981B2 JP09272539A JP27253997A JP3088981B2 JP 3088981 B2 JP3088981 B2 JP 3088981B2 JP 09272539 A JP09272539 A JP 09272539A JP 27253997 A JP27253997 A JP 27253997A JP 3088981 B2 JP3088981 B2 JP 3088981B2
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Japan
Prior art keywords
drill rod
boss
drilling
stirring device
outer periphery
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Expired - Fee Related
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JP09272539A
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Japanese (ja)
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JPH11107268A (en
Inventor
茂 吉田
厚生 福田
紘一 郡司
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株式会社テノックス
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Priority to JP09272539A priority Critical patent/JP3088981B2/en
Publication of JPH11107268A publication Critical patent/JPH11107268A/en
Application granted granted Critical
Publication of JP3088981B2 publication Critical patent/JP3088981B2/en
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Application status is Expired - Fee Related legal-status Critical

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Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】この発明は深層混合処理工法等の地盤改良工法に使用され、掘削土が掘削翼や攪拌翼と共に回転する事態を防止する共回り防止翼付き掘削攪拌装置に関するものである。 TECHNICAL FIELD The present invention is used in ground improvement method, such as Deep Mixing Method, excavated soil is related to co-rotation prevention winged drilling stirrer to prevent a situation that rotates with excavation blades or stirring blade .

【0002】 [0002]

【従来の技術及び発明が解決しようとする課題】先端に掘削翼を有する掘削ロッドの外周に攪拌翼が突設された掘削攪拌装置を用い、粘性土地盤をセメント等の固化材と攪拌,混合して地盤改良する場合に、掘削された粘性土が掘削翼や攪拌翼に付着して掘削攪拌装置と共に回転する事態の発生を防止する目的で、出願人は掘削径より長い共回り防止翼を掘削ロッドの外周に遊嵌させた共回り防止装置を提案している(特許第 1197295号)。 Using the drilling stirring device stirring blades in the outer periphery of the drill rod projecting with excavation blades on the tip BACKGROUND OF 0007], stirring viscous land board and solidifying material such as cement, mixed and when the ground improvement, in order excavated cohesive soil to prevent occurrence of a situation which rotates with adhering to excavating blades and agitating blades drilling stirrer, a applicant long corotation prevent blade from digging diameter It proposes a co-rotation prevention device in which is loosely fitted on the outer periphery of the drill rod (Japanese Patent No. 1197295).

【0003】この共回り防止翼は先端部分が掘削地盤の回りの地盤中に差し込まれることで、掘削ロッドの回転時にも地盤の抵抗により静止した状態を維持し、掘削土を強制的に切断して良好な混合状態を得るものであるが、掘削ロッドに対して相対的に回転するため、掘削ロッドに遊嵌するボスの内周面との接触による摩擦により、掘削ロッドの外周面が磨耗する問題がある。 [0003] The co-rotation preventing blade than the tip portion is inserted into around the ground drilling ground, even during rotation of the drill rod to remain stationary by the resistance of the ground, forcibly cutting the excavated soil Although Te is intended to obtain a good mixing condition, to rotate relative to the drilling rod, the friction caused by contact with the inner circumferential surface of the boss which loosely fitted to drill rod, the outer peripheral surface of the drill rod is worn There's a problem. 磨耗はボス内周面と掘削ロッド外周面間の隙間に入り込む土砂によって助長される。 Wear is promoted by sediment entering the gap between drill rod outer peripheral surface and the inner circumferential surface boss.

【0004】共回り防止翼に磨耗が生じた場合、その交換は容易に行えるが、掘削ロッドに磨耗が生じた場合には部分的な交換が効かない。 [0004] If the wear corotation prevention wing occurs, its replacement can be easily, it does not work partial exchange if wear occurs in the drill rod. また掘削ロッドは全長に亘って捩じりモーメントを負担していることから、掘削ロッドの磨耗が進行すれば、破断する可能性がある。 The drill rod from the fact that bear the torsional moment over the entire length, if progress wear of drill rod, is likely to break.

【0005】この発明は上記背景より、掘削ロッドの磨耗を抑制し、その寿命を延ばす装置を提案するものである。 [0005] The invention has than the background, to suppress the wear of the drill rod, proposes a device to extend its life.

【0006】本発明では掘削ロッド外周の、ボスが遊嵌する部分の表面に溶接により点状乃至線状の肉盛りをし、掘削ロッドの表面とボス内周面を非接触状態に保つことにより、掘削ロッドの表面を保護し、摩耗を抑制、 [0006] The drill rod circumference in the present invention, the boss is a point-like or linear build-up by welding on a surface of a portion loosely fitted, by keeping the surface and the boss inner peripheral surface of the drill rod in a non-contact state , protects the surface of the drill rod, inhibit wear,
あるいは防止する。 Or to prevent.

【0007】ボスは、それが遊嵌している部分の上下に突設され、ボスの上下動を拘束する、掘削ロッドのフランジにも接触することから、請求項2に記載のようにフランジのボス側の面にも溶接による肉盛りを施すことで、フランジも掘削ロッド本体と同様に保護されるため、掘削ロッド自体の寿命が延びる。 [0007] Boss, it is protruded in upper and lower portions being loosely fitted, to restrain the vertical movement of the boss, because the contact to the flange of the drill rod, the flange as claimed in claim 2 by also on the surface of boss side performing padding by welding, the flange is protected like the drill rod body, extending the life of the drill rod itself.

【0008】 [0008]

【発明の実施の形態】この発明は図2に示すような、先端に掘削翼7を有し、外周に攪拌翼8が突設された掘削ロッド2の外周に遊嵌するボス3を介して共回り防止翼4が装着された掘削攪拌装置1において、図1に示すように掘削ロッド2外周の、ボス3が遊嵌する部分の表面に溶接により肉盛り5を施したものである。 DETAILED DESCRIPTION OF THE INVENTION The present invention as shown in FIG. 2, has a drilling blade 7 to the tip, through the boss 3 which stirring blades 8 on the outer circumference is loosely fitted on the outer periphery of the drill rod 2 which projects in drilling stirrer 1 corotation preventing blade 4 is attached, it was subjected to padding 5 by welding to the surface of the portion of the drill rod 2 the outer periphery as shown in FIG. 1, the boss 3 is loosely fitted.

【0009】ボス3は図3−(a) に示すように掘削ロッド2の外周面との間に相対的に回転できる程度の隙間をおいて掘削ロッド2の外周に装着される。 [0009] boss 3 is mounted on the outer periphery of the drill rod 2 with a gap enough to relative rotation between the outer circumferential surface of the drill rod 2 as shown in FIG. 3- (a). ボス3はその内周面に磨耗が生じた場合の交換のためや、掘削ロッド2外周の肉盛り5の状態を確認するために、掘削ロッド2に対して着脱自在に装着される。 Boss 3 and for the exchange in case of occurring wear on the inner peripheral surface thereof, in order to check the status of the padding 5 of the drill rod 2 periphery removably attached against drill rod 2.

【0010】図3−(a) では、掘削ロッド2の中心に関して片側に位置する共回り防止翼4の掘削ロッド2寄りを湾曲させてボス3を形成し、共回り防止翼4が一体化したボス3,3を対向させた状態で掘削ロッド2の回りに配置し、掘削ロッド2を挟み込んで互いに接合することでボス3と共回り防止翼4を掘削ロッド2の外周に着脱自在に装着している。 [0010] In Figure 3- (a), by bending the drill rod 2 side of the co-rotation preventing blade 4 located on one side with respect to the center of the drill rod 2 to form a boss 3, corotation prevent blade 4 are integrated was placed around the drill rod 2 bosses 3,3 while being opposed, the boss 3 and co-rotation preventing wing 4 by joining together sandwich the drill rod 2 detachably mounted on the outer periphery of the drill rod 2 ing.

【0011】共回り防止翼4の枚数は限定されず、図3 [0011] The number of co-rotation preventing blade 4 is not limited, 3
−(a) と同様の要領で3枚、または4枚の共回り防止翼4を装着する場合もあり、4枚付ける場合は図3−(a) - might be mounted three or four co-rotation preventing blade 4 in the same manner as (a), when put four FIGS 3- (a)
のボス3,3の部分の一点鎖線で示す中心線上に共回り防止翼4を溶接等により突設することもある。 Also it is projected on the center line indicated by a chain line in one point of the portion of the boss 3,3 by welding or the like co-rotation preventing blade 4.

【0012】掘削ロッド2外周の、ボス3が遊嵌する部分の上下にはボス3の上下動を拘束するフランジ6,6 [0012] of the drill rod second outer peripheral flange 6, 6 to the upper and lower portion of the boss 3 is loosely fitted to constrain the vertical movement of the boss 3
が突設されるが、肉盛り5は図1,図3−(b) に示すように上下のフランジ6,6に挟まれた区間に溶着させられる。 There although projected, padding 5 is 1, is be welded sandwiched by section to upper and lower flanges 6, 6 as shown in FIG. 3- (b). 図1,図3は肉盛り5のビードを掘削ロッド2の軸方向に向け、図4はその直交方向に付け、図面では線状に肉盛り5を溶着させた場合を示しているが、ボス3 Figure 1, Figure 3 is directed to beads of padding 5 in the axial direction of the drill rod 2, 4 is attached to the perpendicular direction, in the drawing shows a case where the overlaying 5 was welded to a linear, boss 3
の内周面と掘削ロッド2の外周面との間に常に隙間が確保されればよいため、肉盛り5を点状に溶着させる場合もある。 Always for sufficient if a gap is ensured, even if the fusing of the padding 5 in dots between the inner peripheral surface of the outer peripheral surface of the drill rod 2.

【0013】肉盛り5を線状に付ける場合、肉盛り5は直線状の他、溶接作業性の面から図示するような波形に付けられる。 [0013] When attaching the padding 5 to a linear, padding 5 Other linear, attached to a waveform as illustrated in terms of weldability. 肉盛り溶接は掘削ロッド2を水平に寝かせた状態で行われるため、直線状に付ける場合は掘削ロッド2の軸方向に付けるのが効率的である。 Since the overlay clad is performed in a state in which laid the drill rod 2 horizontally, if put in a straight line that attach the axial direction of the drill rod 2 it is efficient.

【0014】肉盛り5に使用される溶接棒には磨耗を低減する上では硬質な程よく、一例としてはHK800Kが使用される。 [0014] moderately hard in order to reduce the wear on the welding rod used for padding 5, HK800K is used as an example. 肉盛り5の高さは掘削ロッド2とボス3間の隙間の大きさによって決まり、3〜5mm程度が適当である。 The height of the padding 5 is determined by the size of the gap between the drill rod 2 and the boss 3, about 3~5mm is appropriate.

【0015】図5は掘削ロッド2と同じくフランジ6, [0015] FIG. 5 is like the drill rod 2 flange 6,
6も保護するために、各フランジ6のボス3側の面にも肉盛り5を施した場合を示す。 6 in order to protect, shows a case where in a surface of the boss 3 side of each flange 6 was subjected to padding 5.

【0016】 [0016]

【発明の効果】掘削ロッド外周の、ボスが遊嵌する部分の表面に溶接により点状乃至線状の肉盛りをし、掘削ロッドの表面とボス内周面を非接触状態に保つため、掘削ロッドの表面が保護され、その摩耗を抑制、あるいは防止できる。 The drill rod periphery, according to the present invention, the boss is a point-like or linear build-up by welding on a surface of a portion loosely fitted, to keep the surface and the boss inner peripheral surface of the drill rod in a non-contact state, the excavation surface of the rod is protected, its wear control, or can be prevented.

【0017】ボスが着脱自在に装着されていれば、肉盛りの磨耗状況の確認が可能であり、磨耗が進行していればボスを取り外すことで改めて肉盛りを施すことができるため、肉盛りが磨耗した場合には再度肉盛りを施すことで、磨耗が進行して掘削ロッド自体が損傷する事態を防止できる。 [0017] If the boss is removably mounted, it is possible to check the wear status of the build-up, because the wear can be subjected to again build-up by removing the boss if in progress, padding but by applying the build-up again if you wear, it is possible to prevent a situation in which damage to the drill rod itself wear progresses.

【0018】請求項2ではフランジのボス側の面にも肉盛りするため、掘削ロッド表面と同等にフランジを保護でき、掘削ロッドの寿命を延長させることができる。 [0018] To build-up to the boss side surface of claim 2 in the flange, drill rod surface and equally protect the flange, it is possible to extend the life of the drill rod.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】共回り防止翼を外した状態の掘削ロッドを示した立面図である。 1 is an elevational view showing drilling rod when opening the corotation preventing wing.

【図2】共回り防止翼を装着した状態の掘削ロッドを示した立面図である。 2 is an elevational view showing the drill rod a state of mounting the corotation preventing wing.

【図3】(a) は図2の上部のフランジを通る横断面図、 [3] (a) is a cross-sectional view through the upper portion of the flange of Figure 2,
(b) は図1の共回り防止翼が装着される部分の拡大図である。 (B) is an enlarged view of a portion corotation prevent blade of Figure 1 is mounted.

【図4】図3の変形例であり、(a) は図2の上部のフランジを通る横断面図、(b) は図1の共回り防止翼が装着される部分の拡大図である。 [Figure 4] is a variation of FIG. 3 is an enlarged view of (a) is a cross-sectional view through the upper portion of the flange of Figure 2, (b) the portion corotation prevent blade of Figure 1 is mounted.

【図5】掘削ロッド表面とフランジに肉盛りを施した様子を示した斜視図である。 5 is a perspective view showing a state subjected to padding in the drill rod surface and the flange.

【符号の説明】 DESCRIPTION OF SYMBOLS

1……掘削攪拌装置、2……掘削ロッド、3……ボス、 1 ...... drilling stirring device, 2 ...... drill rod, 3 ...... boss,
4……共回り防止翼、5……肉盛り、6……フランジ、 4 ...... both around prevention wing, 5 ...... build-up, 6 ...... flange,
7……掘削翼、8……攪拌翼。 7 ...... drilling wing, 8 ...... stirring blade.

フロントページの続き (56)参考文献 特開 平7−259504(JP,A) 実開 昭61−71650(JP,U) 特公 昭58−29374(JP,B2) (58)調査した分野(Int.Cl. 7 ,DB名) E02D 3/12 Of the front page Continued (56) Reference Patent flat 7-259504 (JP, A) JitsuHiraku Akira 61-71650 (JP, U) Tokuoyake Akira 58-29374 (JP, B2) (58) investigated the field (Int .Cl. 7, DB name) E02D 3/12

Claims (2)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 先端に掘削翼を有し、外周に攪拌翼が突設された掘削ロッドの外周に遊嵌するボスを介して共回り防止翼が装着された掘削攪拌装置であり、掘削ロッド外周の、ボスが遊嵌する部分の表面に溶接により点状乃至線状の肉盛りをしてある共回り防止翼付き掘削攪拌装置。 1. A has a drilling blade at the tip, a drilling stirring device corotation preventing blade is mounted via a boss stirring blade is loosely fitted to the outer periphery of the drill rod projecting from the outer periphery, drill rod the outer periphery of the boss is punctiform or linear buildup corotation prevent winged drilling stirring device are the by welding to the surface of the portion to be loosely fitted.
  2. 【請求項2】 掘削ロッド外周の、ボスが遊嵌する部分の上下に固定されたフランジのボス側の面に溶接により肉盛りをしてある請求項1記載の共回り防止翼付き掘削攪拌装置。 2. A drill rod of the outer periphery, bosses corotation prevent winged drilling stirring device according to claim 1, wherein you have the padding by welding the boss side surface of the fixed flange and below the portion that loosely .
JP09272539A 1997-10-06 1997-10-06 Co-rotation prevention winged drilling stirring device Expired - Fee Related JP3088981B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09272539A JP3088981B2 (en) 1997-10-06 1997-10-06 Co-rotation prevention winged drilling stirring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09272539A JP3088981B2 (en) 1997-10-06 1997-10-06 Co-rotation prevention winged drilling stirring device

Publications (2)

Publication Number Publication Date
JPH11107268A JPH11107268A (en) 1999-04-20
JP3088981B2 true JP3088981B2 (en) 2000-09-18

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644671U (en) * 1991-02-13 1994-06-14 株式会社バンガード The support of the release device in a portable transport vehicles
JPH07165083A (en) * 1993-12-16 1995-06-27 Murata Mach Ltd Hand truck
JP2011038291A (en) * 2009-08-10 2011-02-24 Estec Co Ltd Soil improving machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5898518B2 (en) * 2012-02-17 2016-04-06 株式会社テノックス Ground improvement method
JP6121248B2 (en) * 2013-06-05 2017-04-26 株式会社テノックス九州 Drilling and stirring device with co-rotation prevention wing
JP6208502B2 (en) * 2013-09-10 2017-10-04 株式会社テノックス九州 Drilling and stirring device with co-rotation prevention wing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644671U (en) * 1991-02-13 1994-06-14 株式会社バンガード The support of the release device in a portable transport vehicles
JPH07165083A (en) * 1993-12-16 1995-06-27 Murata Mach Ltd Hand truck
JP2011038291A (en) * 2009-08-10 2011-02-24 Estec Co Ltd Soil improving machine

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