EP1471187A1 - Gewindeschneideeinrichtung - Google Patents

Gewindeschneideeinrichtung Download PDF

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Publication number
EP1471187A1
EP1471187A1 EP20040291004 EP04291004A EP1471187A1 EP 1471187 A1 EP1471187 A1 EP 1471187A1 EP 20040291004 EP20040291004 EP 20040291004 EP 04291004 A EP04291004 A EP 04291004A EP 1471187 A1 EP1471187 A1 EP 1471187A1
Authority
EP
European Patent Office
Prior art keywords
shaft
cutting
cutting means
drag
rods
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.)
Granted
Application number
EP20040291004
Other languages
English (en)
French (fr)
Other versions
EP1471187B1 (de
Inventor
Lewis Stansfield
Nick Wharmby
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.)
Compagnie du Sol SARL
Original Assignee
Compagnie du Sol SARL
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 Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Priority to PL04291004T priority Critical patent/PL1471187T3/pl
Publication of EP1471187A1 publication Critical patent/EP1471187A1/de
Application granted granted Critical
Publication of EP1471187B1 publication Critical patent/EP1471187B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • 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
    • E02D5/22—Piles
    • E02D5/56—Screw piles
    • 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
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
    • 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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • 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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

Definitions

  • the present invention relates to a threading equipment for cutting an internal thread inside a previously bored pile shaft, said shaft being preferably, but not necessarily, bored in clay or similar soil.
  • the equipment may further comprise a bucket.
  • the bearing capacity of the concrete pile greatly depends on the diameter of the pile.
  • a technique to increase the bearing capacity of a pile of a given diameter is to make a thread or an helical slot in the internal wall of the pile shaft.
  • the thread or helical slot is also filled with concrete.
  • EP 1 277 887 in the name of Compagnie du Sol describes a drilling tool which is provided with a cutter. This cutter projects outside the lower end of the flight of this tool. When the tool is rotated and lifted the cutter makes a helical slot or thread in the inner wall of the pile shaft bored by the drilling tool itself.
  • this technique is only usable when the tool is of the horizontal displacement type.
  • An object of the present invention is to provide an equipment which permits the cutting of an internal thread inside a previously bored pile shaft, especially when the pile shaft is bored in clay or similar soil.
  • the threading bucket equipment for cutting a thread in the inner wall of a shaft comprises:
  • the cutting member is in its retracted position.
  • the cutting member is moved to its expanded position. Then the displaceable assembly is raised and rotated whereby the cutting member makes the thread or helical slot in the internal wall of the pile shaft.
  • the displaceable assembly further comprises a lower section secured to the upper section, said lower section forming a cylindrical container for receiving the soil cuttings.
  • the displaceable assembly is fixed at the lower end of the driving rods.
  • the driving rods are rotated in a first direction the cutting member is in its retracted position and when the driving rods are rotated in the second direction the cutting member is in its expanded active position.
  • the pitch of the thread and the length of the thread can be predetermined by controlling the rotation speed and vertical displacement speed of the displaceable assembly.
  • the displaceable assembly is provided with means, for example drag plates, to create a friction force between the displaceable assembly and the inner wall of the pile shaft whereby the sense of rotation of the driving rods can efficiently move the cutting member from its retracted position to its expanded position.
  • the equipment comprises a piling rig 10 provided with a vertical mast 12.
  • the upper end 12a of the mast is equipped with two pulleys 14, 16 for a cable 18.
  • the mast 12 also forms a vertical guide for a movable rotary drive box 20.
  • the rotary drive box 20 can be moved along the whole length of the mast 12.
  • the equipment further comprises a set of driving rods or Kelly bar 22.
  • the Kelly bar consists of a plurality of steel tubes which are locked one to the other.
  • the upper end 22a of the Kelly bar is secured to an end of the cable 18. As a result, the up and down vertical movement of the Kelly bar is controlled by the cable.
  • the Kelly bar 22 passes through the rotary drive box 20 and the box 20 applies a rotative torque to the Kelly bar 22. However, the Kelly bar can be vertically moved with respect to the box 20.
  • the lower end 22b of the Kelly bar or of the driving rods is connected to a threading equipment 30 or displaceable assembly.
  • the threading equipment 30 preferably comprises an upper section 32 and a lower section 34 which are interconnected.
  • the upper section 32 will be described in greater detail hereinafter.
  • the lower section 34 is in the form of a cylindrical container 36 for catching the clay or soil cuttings as they fall from the upper section 32 which consists of a cutting device 38 adapted to cut a thread or helical slot in the internal wall 37 of a previously bored pile shaft 39.
  • the equipment further comprises speed transducers (not shown) to measure the vertical displacement speed and the rotational speed of the driving rods 22.
  • the lower section 34 consists of a cylindrical container 36 having a cylindrical lateral wall 40, a bottom, 42 and an opened upper end 44.
  • the bottom 42 is secured to a rotating control axis 46, the upper end of which is connected by a linking member 48 to the lower end of the driving rods.
  • the upper section 50 consists of a threading equipment.
  • the threading equipment comprises two cutting tools 52 and 54 diametrically opposed about the vertical control axis 46.
  • Each cutting tool is linked to the axis 46 by a control mechanism 56 and 58.
  • the control mechanisms are designed so that each cutting tool 52 or 54 can be moved, in a plane substantially perpendicular to the axis 46, between a retracted position shown in figure 3 and an expanded position shown in figure 2. More precisely, when the axis is rotated in the direction of arrow F1, the cutting tools are moved into their expanded position and when the axis 46 is rotated in the direction of arrow F2, the cutting tools are moved into their retracted position.
  • the driving rods are rotated in the direction F2 so that the cutting member 50 is maintained in its retracted position.
  • the rods 22 are rotated in the direction F1 so that the cutting tools 52 and 54 are moved and maintained in their expanded position.
  • the assembly is lifted with controlled vertical and rotational speeds so that the tool 50 cuts in the wall 37 of the bore 39 a thread having the shape of an helical slot.
  • the thread has a pitch which is defined by the vertical and rotational speeds. This pitch can be varied along the length of the bored shaft. The thread can extend only along a lower portion of the shaft.
  • the assembly 30 is rotated in the direction F2 when the thread is terminated.
  • the soil cuttings fall into the cylindrical container 36.
  • the thread can be formed in one or several sections depending on the capacity of the container 36. As previously explained, the threading equipment can have no lower section, i.e. no bucket.
  • Fig. 6 shows a shaft 39, the wall 37 of which is provided with a thread or helical slot 58.
  • the shape of the thread is defined by the shape of the cutting tool 50.
  • the threading bucket can be equipped with two diametrically opposed cutting tools. Thus, a double helical slot is obtained.
  • the threading equipment is provided with a bucket.
  • This equipment is called a threading bucket.
  • the threading bucket numbered 60 is provided with means to create a friction force between the threading equipment and the wall of the shaft. This friction force permits the actual movement of the cutting member with respect to the frame of the equipment in its expanded position and its retracted position.
  • the cutting device 62 comprises two diametrically disposed cutting systems 64 and 66. These two cutting systems are identical, so only cutting system 64 will be described.
  • the cutting system 64 comprises a vertical drive tube 68 which is attached to the lower end 22b of the Kelly bar 22.
  • Drive brackets 70 are secured to the drive tube 68.
  • Linking levers 72 have a first end 72a which is pivotally mounted on the end 70a of the drive brackets 70.
  • the second end 72b of the linking levers 72 is pivotally mounted on the median portion 74a of a cutting frame 74.
  • the cutting frame 74 In a horizontal plane, the cutting frame 74 has the shape of an arc of a circle.
  • a first end 74b of the cutting frame 74 is pivotally mounted at the end 76a of upper drag bracket 76.
  • the upper drag brackets 76 are secured to a drag tube 78 which is mounted around the outside of the drive tube 68.
  • the drag tube 78 can rotate around the drive tube 68, thus allowing the drag brackets 76 to rotate relative to the drive brackets 70.
  • Lower drag brackets 77 are also secured to the drag tube 78.
  • the end 77a of the lower drag brackets 77 is equipped with a drag plate 80.
  • the drag plate 80 has the general shape of a portion of cylinder and is mounted on the drag bracket 76 by means of a biasing spring 82.
  • the second end 74C of the cutting frame 74 is provided with a tool holder 84 for receiving the cutting tool or cutting teeth 86.
  • the cutting tool 86 projects outside the external face 74d of the cutting frame 74.
  • the drag plate 80 is disposed below the cutting tool 86.
  • the drag plate 80 is positioned so as to be in firm contact with the inner wall 37 of the shaft under the effect of the biasing spring 82 when the threading equipment is introduced into the upper end of the shaft.
  • the threading bucket is rotated in a counter-clockwise direction to retract the cutting tools 86, thus allowing it to be removed from the shaft.
  • the threading equipment is lifted 800 mm for each rotation, thereby forming a double helix with a pitch of 800 mm and a distance between two threads of 400 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Earth Drilling (AREA)
  • External Artificial Organs (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Milling Processes (AREA)
EP04291004A 2003-04-22 2004-04-15 Gewindeschneideeinrichtung Expired - Lifetime EP1471187B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04291004T PL1471187T3 (pl) 2003-04-22 2004-04-15 Urządzenie gwintujące

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0309090A GB2400869B (en) 2003-04-22 2003-04-22 Threading equipment
GB0309090 2003-04-22

Publications (2)

Publication Number Publication Date
EP1471187A1 true EP1471187A1 (de) 2004-10-27
EP1471187B1 EP1471187B1 (de) 2006-11-29

Family

ID=9957082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04291004A Expired - Lifetime EP1471187B1 (de) 2003-04-22 2004-04-15 Gewindeschneideeinrichtung

Country Status (7)

Country Link
EP (1) EP1471187B1 (de)
AT (1) ATE346988T1 (de)
DE (1) DE602004003418T2 (de)
ES (1) ES2277218T3 (de)
GB (1) GB2400869B (de)
PL (1) PL1471187T3 (de)
PT (1) PT1471187E (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748108A1 (de) * 2005-07-28 2007-01-31 Compagnie du Sol Bohrschnecke
FR2889241A1 (fr) * 2005-07-28 2007-02-02 Cie Du Sol Soc Civ Ile Tariere a ergot mobile
FR2940661A1 (fr) * 2008-12-30 2010-07-02 Cie Du Sol Machine d'excavation ayant un kelly muni de cavites debouchant sur deux faces
ITTO20090312A1 (it) * 2009-04-21 2010-10-22 Soilmec Spa Attrezzatura di scavo e costipazione per la costruzione di pali a vite.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6427477B2 (ja) * 2015-09-24 2018-11-21 前田製管株式会社 拡大孔掘削用ヘッド

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1916691A (en) * 1932-03-24 1933-07-04 Raymond Concrete Pile Co Reamer for earth boring buckets
GB2183703A (en) * 1985-08-22 1987-06-10 Cementation Piling & Found In situ concrete pile construction and under cutting tool

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB240667A (en) * 1924-11-06 1925-10-08 William Langsdorf Improvements in ground augers
JP2724548B2 (ja) * 1995-07-10 1998-03-09 関西電力株式会社 ２段拡大ヘッド
GB9620251D0 (en) * 1996-09-26 1996-11-13 Cementation Piling & Found Bearing capacity enhancement for piling applications
JPH112085A (ja) * 1997-04-18 1999-01-06 Nippon Concrete Ind Co Ltd 掘削装置
JP2000337072A (ja) * 1999-06-01 2000-12-05 Sanekata Naoya 地中掘削装置および地中掘削方法
GB2377235A (en) * 2001-07-17 2003-01-08 Cie Du Sol Drilling tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1916691A (en) * 1932-03-24 1933-07-04 Raymond Concrete Pile Co Reamer for earth boring buckets
GB2183703A (en) * 1985-08-22 1987-06-10 Cementation Piling & Found In situ concrete pile construction and under cutting tool

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748108A1 (de) * 2005-07-28 2007-01-31 Compagnie du Sol Bohrschnecke
FR2889241A1 (fr) * 2005-07-28 2007-02-02 Cie Du Sol Soc Civ Ile Tariere a ergot mobile
US7591329B2 (en) 2005-07-28 2009-09-22 Compagnie Du Sol Auger with a movable gouge for making a borehole
FR2940661A1 (fr) * 2008-12-30 2010-07-02 Cie Du Sol Machine d'excavation ayant un kelly muni de cavites debouchant sur deux faces
EP2204499A1 (de) * 2008-12-30 2010-07-07 Soletanche Freyssinet Aushubmaschine mit einem Kellygestänge mit Aussparungen, die nach zwei Seiten geöffnet sind
ITTO20090312A1 (it) * 2009-04-21 2010-10-22 Soilmec Spa Attrezzatura di scavo e costipazione per la costruzione di pali a vite.

Also Published As

Publication number Publication date
GB2400869B (en) 2006-11-15
GB0309090D0 (en) 2003-05-28
DE602004003418T2 (de) 2007-10-04
DE602004003418D1 (de) 2007-01-11
EP1471187B1 (de) 2006-11-29
ES2277218T3 (es) 2007-07-01
PL1471187T3 (pl) 2007-04-30
PT1471187E (pt) 2007-02-28
ATE346988T1 (de) 2006-12-15
GB2400869A (en) 2004-10-27

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