WO1995016079A1 - Dispositif d'excavation a arbres multiples - Google Patents

Dispositif d'excavation a arbres multiples Download PDF

Info

Publication number
WO1995016079A1
WO1995016079A1 PCT/JP1993/001797 JP9301797W WO9516079A1 WO 1995016079 A1 WO1995016079 A1 WO 1995016079A1 JP 9301797 W JP9301797 W JP 9301797W WO 9516079 A1 WO9516079 A1 WO 9516079A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
transfer means
continuous wall
shafts
kneading
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.)
Ceased
Application number
PCT/JP1993/001797
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuhiro Shibasaki
Hiroshi Kotaki
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.)
Chemical Grouting Co Ltd
Original Assignee
Chemical Grouting Co 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 Chemical Grouting Co Ltd filed Critical Chemical Grouting Co Ltd
Priority to DE69331879T priority Critical patent/DE69331879T2/de
Priority to EP94902105A priority patent/EP0685603B1/fr
Priority to PCT/JP1993/001797 priority patent/WO1995016079A1/fr
Publication of WO1995016079A1 publication Critical patent/WO1995016079A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/001—Drilling a non circular hole

Definitions

  • the present invention relates to a multi-axis excavator having three kneading axes used for forming a continuous wall in the ground.
  • Drill the ground into a wall shape discharge a liquid mixture such as cement from the tip of the kneading shaft, mix it with the in-situ soil in the soil to create a continuous wall, and retain it in construction and underground construction.
  • the in situ soil mixing method which forms a waterproof wall in wall and sheet pile retaining works, has been widely used as an effective construction technique.
  • a drive device 3 is stretched up and down on a guide post 2 erected on a self-propelled carriage 1.
  • a multi-axis device 4 is connected to a lower portion of the driving device 3, and a plurality (three in the illustrated example) of kneading shafts 5A, 5B and 5C (hereinafter collectively referred to as "multi-axis device 4") are connected to the multi-axis device 4. Is used.) Is attached.
  • An excavating blade 6 is provided at the lower end of the kneading shaft 5, and a screw-shaped moving wing 7 and a rod-shaped kneading wing 8 having the same diameter as the excavating blade 6 are provided above the excavating blade 6.
  • the tips of the adjacent kneading blades 8 cooperate with each other to mix the in-situ soil and the mixed solution to form a unit of continuous wall.
  • H-section steel sheet piles are installed on the continuous wall to improve soil retention and water stoppage.
  • the continuous wall obtained by the kneading shaft has triangular irregularities on both sides of the unit in the longitudinal direction of the unit, in which the outer diameter of the rotation locus of the excavating blade overlaps. Is not preferred.
  • the present invention has been proposed in view of the above-described problems of the conventional technology, and has as its object to provide a highly reliable multi-axis excavator that forms a straight continuous wall unit.
  • the multi-shaft excavator of the present invention is a multi-shaft excavator equipped with three kneading shafts used for forming a continuous wall in the ground, wherein the housing that holds the space between the kneading shafts is rotated around the center kneading shaft.
  • a first transmitting means a pair of second transmitting means which fits the first transmitting means, a third transmitting means integral with the first transmitting means, and a third transmitting means
  • a fourth transmission means fixed to a rotating shaft orthogonal to a straight line connecting the kneading shaft center, and a cone-shaped force fixed to both ends of the rotating shaft and expanding to the side. It is set up with the evening.
  • gears for example, gears
  • gears for example, gears
  • gears for example, gears
  • gears for example, gears
  • so-called "bevel gears” as the third and fourth transmission means.
  • the first transmission means is a first gear
  • the second transmission means is a second gear
  • the third transmission means is a first bevel gear
  • the fourth transmission means is a second bevel gear.
  • cone-shaped which means a cutter shape
  • truncated conical shape frusto-conical shape
  • a guide shaft is provided on one side of the excavator having a plurality of excavating shafts whose shaft cores are arranged on one line.
  • the guide shaft is provided with a cylindrical guide bit having a cutout portion formed to overlap a bit of an adjacent excavation shaft, and a pair of jet nozzles tangentially directed outside the guide. Is preferably provided.
  • the entire triangular protrusion that was conventionally left is cut by the cutter, and the ground is semicircular at both ends and straight at both sides. Can form a continuous wall unit.
  • the cutter since the cutter has a cone shape, for example, a truncated cone shape, the triangular protrusion (which has not been excavated in the past) even if the distance between the kneading shafts is increased. Most of the part is excavated, and the rest collapses due to its own weight, vibration and other factors. That is, according to the present invention, the inter-shaft portion of the kneading shaft can be lengthened. Further, since the inter-shaft portion of the kneading shaft can be configured to be long, it is possible to reduce the time and labor spent for forming the continuous wall unit.
  • a guide shaft is provided on the-side of the excavator having a plurality of excavation axes whose axes are arranged on a line, the guide hole is pre-drilled, and the guide hole is formed in the guide hole.
  • the guide axis can be guided and drilling can be performed with the drilling axis.
  • a plurality of continuous holes can be drilled with good linearity because the reaction force receives the guide shaft.
  • the guide hole is convenient because the drilling hole at the end of the primary drilling hole that has been drilled can be used to maintain continuity with the secondary drilling hole.
  • the jet flow is jetted from the jet nozzle, the ground is excavated by the jet jet in addition to the excavation by the cone-shaped cutter. In some cases, cone-shaped cutters can be washed, which is preferable.
  • FIG. 1 is a schematic front view showing a main part of an embodiment of the present invention
  • FIG. 2 is a side view of FIG. 1
  • FIG. 3 is a horizontal sectional view showing details
  • FIG. FIG. 5 is a cross-sectional view taken along line A—B—C—E of FIG. 3
  • FIG. 5 is a side view for explaining the conventional apparatus
  • FIG. 6 is a front view showing the kneading shaft of FIG. 5
  • FIG. 8 is a front view showing an example of a continuous multi-screw excavator suitably combined with the invention
  • FIG. 8 is a drawing showing a lower part of FIG. 7, and FIG.
  • FIG. 9 is a cross-sectional view taken along line A-A of FIG.
  • FIG. 10 is a front view showing the guide bit
  • FIG. 11 is a cross-sectional view taken along line BB of FIG. 10
  • FIG. 12 is a cross-sectional view taken along line C-C of FIG.
  • FIG. 13 is a plan view illustrating an excavation mode
  • FIG. 14 is a front view illustrating an excavation mode
  • FIG. 15 is a front view illustrating another mode of a guide bit position.
  • Figure 16 is the guide bit position
  • FIG. 17 is a front view illustrating another embodiment of the excavation
  • FIG. 17 is a plan view illustrating another embodiment of the excavation
  • FIG. 18 is another example of the continuous multi-axis excavator suitably combined with the present invention.
  • FIG. 19 is a front view of the continuous multi-shaft excavator of FIG. 18.
  • the kneading shafts 5 A, 58 and 5 mm are maintained at a distance between the shafts by a housing 11 of a cutting drive device 10 also serving as a bearing.
  • Two pairs of force cutters 22 described later are provided parallel to a straight line L connecting the axes of the excavating shafts 5.
  • the housing 11 of the power drive device 10 includes a first portion 12 including a straight line L and two second portions orthogonal to the straight line L at an intermediate portion of each axis 5. 13 and 13 form an H shape.
  • a first gear (first transmission means) 14 is serration-coupled to the kneading shaft 5B, and the first gear 14 is formed by a pair of first gears 14 disposed on a straight line L in the first portion 12.
  • Second gear (second transmission means) meshed with 15.
  • the second gear 15 is fixedly connected to a shaft 17 vertically supported by a first portion 12 via a pair of bearings 16, and an upper portion of the shaft 17 is provided with a second gear 15.
  • a first bevel gear (third transmission means) 18 projecting into the part 13 is fixedly provided.
  • a rotating shaft 19 is supported in the second portion 13 via three pairs of bearings 20.
  • a second bevel gear (fourth transmission means) 21 that engages with the first bevel gear 18 is keyed to the two pairs of bearings 20 of the rotating shaft 19, and is provided on both sides of the drive shaft 19.
  • the vine 22 is fixed.
  • the outer shape of the cutout 22 is formed in a cone shape (a truncated cone shape in the illustrated example) that expands laterally.
  • the cutter 22 has a shape in which the outer portions of the triangular protrusion A formed on both sides of the straight line L by the rotation locus outer diameter D of the mutually overlapping excavating blades 6 (FIG. 6) are forcibly formed. Have been.
  • the first gear 14, the second gear 15, the first bevel gear 18 and the second bevel gear 21 are used.
  • the pair of power members 22 and 22 shown in 1 rotate in opposite directions as indicated by arrows, and cut the outer portion of the portion A.
  • the outer periphery D of the three rotation trajectories and the outer surface of the four shafts 22 excavate an area S where both ends of the ground are semicircular and both sides are straight, and a continuous wall unit U is formed.
  • the cuts 22 and 22 rotate in the opposite direction, so the reaction force is canceled and the balance is good.
  • part A 1 is Undercut but small enough to be ignored.
  • the kneading shafts on both sides can be moved on the straight line L by a moving amount E within an undercut portion A2 force ⁇ negligible range.
  • the cut-off 22 is formed in a frusto-conical shape, so even if the distance between the kneading shafts 5A, 5B, and 5C is longer than that shown in the figure, most of the portion A Excavated areas where the rotator 22 did not reach also collapse naturally due to their own weight, vibration and other factors. Therefore, the length of the inter-shaft portions of the kneading shafts 5A, 5B, and 5C is lengthened, and the time, labor, and other various costs spent for forming the continuous wall unit are reduced.
  • Figures 7-19 show a continuous multi-shaft excavator which is very suitable in combination with the present invention.
  • rotatable excavating shafts 110A, 1108 and 110 (hereinafter collectively referred to by reference numeral 110) ) And one non-rotating guide shaft 111 are arranged at equal pitches so that their axes are located on a straight line L.
  • the excavating shafts 110 A to 110 C are connected to each other by anti-interference brackets 112 that also serve as a plurality of bearings, and several brackets of these brackets 112 are used.
  • a clamp bracket 113A for selectively locking the guide shaft 111 is connected to the 112A.
  • a guide bit 111 is provided at the lower end of the guide shaft 111.
  • main body 1 15 is cylindrical and the outer diameter D of the rotation trajectory of the adjacent excavating shaft 11 1 OA cutting blade 106 and moving blade 107 (the outer diameter R of both and the mixing blade 108 is equal) Is formed in the arcuate concave portion 1 16.
  • a pair of jet nozzles 117 are provided on the outer peripheral portion of the main body 115 to inject the jet stream J in a direction parallel to the straight line L, that is, in a tangential direction.
  • the jet stream J jetted from the jet nozzle 117 is jetted in such a direction as to wash the cut 22 (FIG. 14), or does not interfere with the cut 22. Is located in the position.
  • FIG. 13 guide holes H1, H2, ... are drilled in advance, and guide bits 114 are inserted into the first guide hole H1, as shown in Fig. 14, and excavated.
  • Axis 1 1 0 A While drilling holes hl, h2, and h3 with 110B and 110C, excavate the ground with jet flows J and J so that the cross section becomes rectangular.
  • holes hl, h2, and h3 are drilled for guide hole H2 in the same manner, and jet flow :!
  • the ground is excavated continuously by J and J into a rectangular section.
  • the excavation reaction force of the excavation shaft 110 is received at the guide holes HI, H 2 ⁇ via the guide bit 114, a straight line having a rectangular cross section is good.
  • excavation is performed with the guide bit 114 lowered from the excavation blade 106 of the excavation shaft 110 by a length L (for example, 500 to 70 Omm).
  • L for example, 500 to 70 Omm.
  • the guide property of the guide bit 114 is good, but the force of the guide bit 114 is good, but before the length L of the planned excavation depth, the clamping of the guide shaft 111 by the clamp block 113 B is released. It is necessary to make guide bit 114 free.
  • the guide bit 114 and the excavation blade 106 are excavated at the same level, or as shown in FIG. 16, the guide bit 114 is longer than the excavation blade 106.
  • the work of releasing the clamp of the guide bit 114 is unnecessary as described above, but the guideability is slightly inferior, so It is suitable.
  • FIG. 17 shows another mode of the excavation, in which the first excavation for the guide hole H1 is performed, and then the second excavation is performed using the hole h3 as the guide hole.
  • the linearity is further improved, and the strength of the jet stream J is smaller than in the above embodiment.
  • FIGS. 18 and 19 show another embodiment of the present invention, in which guide shafts 111 and 111A are provided on both sides of the excavation shafts 110A to 110C, respectively.
  • the first excavation was performed by using jet holes J1 and H2 in Fig. 13 and jet flow J was counter-injected, and the second excavation was performed using guide holes H2 and H3. And the linearity can be further improved.
  • the illustrated embodiment is an exemplification, and does not limit the technical contents of the present invention.
  • the first to fourth transmission means correspond to the first gear, the second gear, the first bevel gear, and the second bevel gear in the illustrated embodiment, however, other rotation transmission mechanisms are employed. Is also good.
  • a rectangular continuous wall unit can be formed.
  • the excavation area can be expanded by slightly moving the kneading shafts on both sides to the side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Earth Drilling (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

Un dispositif d'excavation à arbres multiples fiable permettant de former un mur continu linéaire comporte trois arbres mélangeurs (5A, 5B, 5C) utilisés pour construire dans le sol un mur continu, un carter (11) servant à maintenir un espace entre lesdits arbres mélangeurs (5A, 5B, 5C) comprenant un premier moyen de transfert (14) entraîné par l'arbre mélangeur central (5B), un deuxième moyen de transfert (15) en prise avec ledit premier moyen de transfert (14), un troisième moyen de transfert (18) faisant partie intégrante du premier moyen de transfert (14), un quatrième moyen de transfert (21) en prise avec ledit troisième moyen de transfert (18) et fixé à un arbre rotatif (19) perpendiculaire à une droite reliant les centres desdits arbres mélangeurs, aux extrémités duquel des lames coniques (22) s'étendant latéralement sont fixées. Avec le dispositif selon l'invention, toutes les parties saillantes triangulaires n'ayant pas été coupées sont coupées par les lames, et il est possible de former dans le sol un mur continu présentant des extrémités circulaires et des côtés linéaires. Grâce à la forme conique, voire tronconique desdites lames, la plupart des parties triangulaires saillantes (parties non excavées) peuvent être excavées même si la distance entre les arbres mélangeurs est grande, les portions non coupées se désagrégeant naturellement sous leur propre poids, sous l'effet des vibrations et autres. En d'autres termes, on peut produire des parties plus longues entre les arbres mélangeurs, et on peut réduire le temps et la main-d'÷uvre nécessaires pour former un mur continu en produisant des parties plus longues entre les arbres mélangeurs.
PCT/JP1993/001797 1993-12-10 1993-12-10 Dispositif d'excavation a arbres multiples Ceased WO1995016079A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69331879T DE69331879T2 (de) 1993-12-10 1993-12-10 Mehrarmige ausschachtungsvorrichtung
EP94902105A EP0685603B1 (fr) 1993-12-10 1993-12-10 Dispositif d'excavation a arbres multiples
PCT/JP1993/001797 WO1995016079A1 (fr) 1993-12-10 1993-12-10 Dispositif d'excavation a arbres multiples

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1993/001797 WO1995016079A1 (fr) 1993-12-10 1993-12-10 Dispositif d'excavation a arbres multiples

Publications (1)

Publication Number Publication Date
WO1995016079A1 true WO1995016079A1 (fr) 1995-06-15

Family

ID=14070706

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1993/001797 Ceased WO1995016079A1 (fr) 1993-12-10 1993-12-10 Dispositif d'excavation a arbres multiples

Country Status (3)

Country Link
EP (1) EP0685603B1 (fr)
DE (1) DE69331879T2 (fr)
WO (1) WO1995016079A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106065764B (zh) * 2016-07-26 2019-03-22 昆明良工桩机制造有限公司 长螺旋多孔连通式钻机、及制作的多孔连通式混凝土灌注桩和灌注桩的施工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448891B2 (fr) * 1989-03-17 1992-08-10 Nitto Kogyo Kk
JPH05179649A (ja) * 1991-12-27 1993-07-20 Takenaka Komuten Co Ltd オーガマシン
JPH0554637U (ja) * 1991-12-26 1993-07-23 株式会社大堀 多連オーガ掘削装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA919196A (en) * 1970-09-19 1973-01-16 Kabushiki Kaisha Tone Boring Excavation equipment to form trenches for buried walls
DE2236901A1 (de) * 1971-08-04 1973-02-22 Rella & Co Bauges Vorrichtung zur herstellung von ortbetonpfaehlen oder schmalwaenden
WO1980001087A1 (fr) * 1978-11-21 1980-05-29 Takenaka Komuten Co Foret
JPS58101930A (ja) * 1981-12-11 1983-06-17 Enoki Toshio 掘削機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448891B2 (fr) * 1989-03-17 1992-08-10 Nitto Kogyo Kk
JPH0554637U (ja) * 1991-12-26 1993-07-23 株式会社大堀 多連オーガ掘削装置
JPH05179649A (ja) * 1991-12-27 1993-07-20 Takenaka Komuten Co Ltd オーガマシン

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0685603A4 *

Also Published As

Publication number Publication date
EP0685603B1 (fr) 2002-05-02
EP0685603A1 (fr) 1995-12-06
DE69331879T2 (de) 2002-12-05
EP0685603A4 (fr) 1996-05-08
DE69331879D1 (de) 2002-06-06

Similar Documents

Publication Publication Date Title
US4904119A (en) Process for placing a piling in the ground, a drilling machine and an arrangement for implementing this process
JP4988061B1 (ja) 地盤改良装置および地盤改良工法
WO1995011349A1 (fr) Dispositif excavateur a arbres multiples
WO1995016079A1 (fr) Dispositif d'excavation a arbres multiples
US5575345A (en) Multi shaft drilling unit
CN108868590B (zh) 一种单轴水泥土搅拌桩钻头
JP2006336427A (ja) 地盤攪拌機および地中連続壁築造方法
JP2809559B2 (ja) 多軸掘削装置
CN213709503U (zh) 一种高压旋切钻头
JP2008208599A (ja) オーガー装置
CN105696561A (zh) H桩与圆桩圆弧锁口设备
US10458184B2 (en) Ground processing tool and a method for creating a borehole in the ground
JP3575875B2 (ja) コンクリート構造物掘削用カッタヘッド
CN121497206B (zh) 一种矩形桩智能成孔设备
JP2678683B2 (ja) シールド機
NL2027127B1 (en) Ground Drill for Drilling a Bore Hole
JPH0565790A (ja) ケーシングヘツド
CN214783857U (zh) 一种双轴搅拌桩
JP3537191B2 (ja) 多軸掘削装置
JP4349522B2 (ja) 地盤改良工法
JPS639607Y2 (fr)
CN121497206A (zh) 一种矩形桩智能成孔设备
JPS6229611A (ja) 拡幅装置を用いた地盤改良工法
JP2000290995A (ja) 地盤改良による地中壁の構築工法及びこれに用いる装置
JP2000230245A (ja) 連続孔掘削方法およびその装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 08335694

Country of ref document: US

AK Designated states

Kind code of ref document: A1

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1994902105

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1994902105

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1994902105

Country of ref document: EP