EP0150977A2 - Erdbohrmaschine - Google Patents

Erdbohrmaschine Download PDF

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Publication number
EP0150977A2
EP0150977A2 EP85300424A EP85300424A EP0150977A2 EP 0150977 A2 EP0150977 A2 EP 0150977A2 EP 85300424 A EP85300424 A EP 85300424A EP 85300424 A EP85300424 A EP 85300424A EP 0150977 A2 EP0150977 A2 EP 0150977A2
Authority
EP
European Patent Office
Prior art keywords
drill
mast
support
support mast
earth
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.)
Withdrawn
Application number
EP85300424A
Other languages
English (en)
French (fr)
Other versions
EP0150977A3 (de
Inventor
Anthony Keith Edward Jessup
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.)
BSP International Foundations Ltd
Original Assignee
BSP International Foundations 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 BSP International Foundations Ltd filed Critical BSP International Foundations Ltd
Publication of EP0150977A2 publication Critical patent/EP0150977A2/de
Publication of EP0150977A3 publication Critical patent/EP0150977A3/de
Withdrawn legal-status Critical Current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
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E02D7/16—Scaffolds or supports for drivers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/26—Placing by using several means simultaneously
    • 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
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E21B3/04—Rotary tables
    • 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
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/021—With a rotary table, i.e. a fixed rotary drive for a relatively advancing tool

Definitions

  • the present invention relates to an earth drill, notably to one having an off-set drilling table.
  • earth drills have typically comprised a drilling mast carried on a support frame at the front of a crawler unit which houses the power unit and which acts as the transport unit for the drill on site.
  • the drilling is achieved by means of a drill bit or auger which is mounted on the end of a drill kelly which passes through the drive hole in the centre of a drilling table driven from the power unit of the crawler unit.
  • the drill table is mounted substantially centrally in front of the crawler unit on a support frame which also supports the drill mast which carries the upper portion of the kelly.
  • the drill As the hole is drilled, it is usually necessary to remove the drill auger from the hole to discharge soil from the hole and also to insert lining tubes into the hole to prevent the hole from caving in. To do this, the drill is withdrawn from the hole and the drill and mast traversed to one side by swinging the whole unit about the axis of rotation of the crawler unit. Whilst the drill can be readily re-centred on the hole by reversing the traverse of the rig, problems are often encountered in accurately aligning the lining tubes with the hole into which they are to be inserted. Accurate positioning of the tubes, which are supported from the mast and lowered into the hole, is required if the tubes are to seat truly into the hole.
  • This alignment is achieved by not only slewing the rig about the axis of rotation of the crawler, but also by actual manoeuvring of the crawler unit on its tracks. Once the tubes are in place it is then necessary to re-align the drill with the hole to continue drilling. All this takes time which might otherwise have been spent drilling and requires considerable skill from the drill operator.
  • the present invention provides an earth drill in which a rotatable drill table and a support mast are carried at the front of a motive unit which can be rotated by an operator about a substantially vertical axis to slew the drill table into and out of register with the hole to be made by a drill auger driven by the drill table by means of a drill kelly characterised in that the operator is to be located offset to one side of the centre line of the mast, in that the drill table is carried offset to that side of the support mast with the axis of rotation of the drill kelly mounted in the drill table lying substantially on the circumference of a circle having it centre as the axis of rotation of the motive unit.
  • Preferably means are provided for supporting one or more tubes for lining the hole drilled by the auger, the support means being located substantially symmetrically to the side of the mast opposed the the drill table whereby the axis of the tubes supported by the support means are located substantially on the circumference of the same circle as the axis of the drill kelly.
  • the earth drill is essentially of the same design and construction as a conventional earth drill, except that the drill table is mounted offset to the same side of the drill mast as the position of the operator. This offset gives the operator of the drill a better and less obstructed view of the drill and kelly during drilling, thus aiding accurate placement of the drill auger during the start of drilling and re-alignment of the auger with the hole after the auger has been removed from the hole to discharge earth.
  • the mast also carries the lining tube supports, accurate alignment of these with the hole is simplified by virtue of the fact that they will automatically align with the hole merely by swivelling the motive unit about its axis.
  • the offset of the drilling table allows the lines supporting the kelly and the lining tubes to be run close to the centre line of the mast. This reduces the bending moments on the mast due to the large offset hitherto considered necessary for the mounting of the sheaves.
  • Figure 2 is a plan view of the drill shown in Figure 1.
  • the drill comprises a motive unit 1.
  • This is conventionally a crane unit mounted on a crawler or tracked base member on which the unit can be manoeuvred.
  • other forms of motive unit can be use if desired, eg. one having wheels rather than catterpillar tracks.
  • the unit is characterised in that the motive unit is rotatably mounted on the base member, preferably so that the crane can be rotated through up to 360°.
  • the crane unit typically houses the main power unit, eg. a diesel engine or diesel pump driving one or more hydraulic motors, the control cabin at the front thereof and offset to one side of the mast, and the cable winding mechanisms for lifting and lowering the drilling mast, the kelly and the lining tubes.
  • the control cabin lies adjacent the edge of the crane unit. The operator is thus offset from the mast by from 20 to 40% of the width of the crane unit.
  • the motive unit can be of conventional design and many suitable forms are commercially available to suit the loads imposed by the drilling operation.
  • a mast 2 which serves to support the drill table 3 to one side and the tube location supports 4 to the other side.
  • the mast is typically carried by a support frame 5 attached to the front of the motive unit.
  • at least part of the weight of the mast is carried by an extensible foot 6 provided at the base of the mast and extended by an hydraulic ram or other means to bear against the earth when the drill is set up on site for drilling.
  • the support frame 5 incorporates means whereby the angle of the mast can be varied both fore and aft and from side to side so that the drill can drill holes at an angle into the ground.
  • the mast is mounted on the support frame 5 by a generally horizontal pivot pin 7, to give the side to side movement; and by other pivots (not shown) at right angles to give the fore and aft movement.
  • the movement of the mast is preferably controlled by one or more hydraulic rams carried by the support frame 5. It is also preferred that the mast can be lowered into the substantially horizontal position for transport by the use of the fore and aft pivot system.
  • the drill table 3 and the lining tube location supports 4 can be mounted independently of one another and either upon the mast 2 or upon the support frame 5, it is preferred to mount them upon a common carrier yoke 8 which is moveable up and down the mast 2 by means of an hydraulic ram or other means (not shown).
  • the yoke 8 conveniently comprises a sleeve which is journalled as a sliding fit on the mast 2. If desired, the sleeve can be provided with guide rollers or the like to maintain the alignment of the sleeve on the mast as it travels axially on the mast.
  • the yoke has the drill table 3 mounted thereon by any suitable means, eg. by forming part of the side member of the drill table integral with the sleeve wall.
  • the table 3 can be of conventional design and typically has a substantially square axial aperture to receive the kelly 10 for the drill auger.
  • the kelly is supported by ropes or lines from a winding drum of the unit 1 passing under pulleys or sheaves 9 at the foot of the mast and pulleys or sheaves 11 at the mast head.
  • the sheaves 11 are located within the transverse width of the mast, preferably close to the centre line of the mast, so that the thrust on the mast by the loads carried by the sheaves is carried directly on the mast and not laterally offset therefrom, thus reducing any bending moment on the mast.
  • the axis of the kelly aperture in the table lies at an arbitrary distance from the axis of the rotation of the motive unit body on its base unit. This distance may be larger or greater than the distance that the mast centre is from that same axis.
  • the table can be mounted ahead of or behind the centre line of the mast and the optimum position will depend upon many factors, eg. the size of the drill auger (to achieve the necessary clearances from the other parts of the machine) and the method of driving the drill table (which may be powered by its own motor rather than from the motive unit engine), and can be readily determined for any given case.
  • the tube location supports 4 are mounted on the yoke 8.
  • the supports comprise V or semi-circular plan view brackets into which the tubes seat as they are supported by lines or ropes from the mast head.
  • the supports 4 lie upon substantially the same circle of rotation as the drill kelly so that mere rotation of the motive unit will bring either the drill kelly or the tubes in the supports 4 into alignment with the hole formed by the drill auger, with the minimum of other manoeuvring by the motive unit. It is therefore particularly preferred to have the axis of the drill table kelly aperture and the axis of the lining tubes mounted in the supports 4 located substantially symmetrically to either side of the mast centre line.
  • the supports 4 can incorporate a mechanism for locking the tubes thereinto, eg. a pivotted front closure to form a jaw to the supports 4. It is also preferred to have two or more sets of supports 4 axially spaced upon the mast by up to 3 metres to impart greater stability to the tube during alignment with the hole. It is also preferred to form the supports 4 with a solid underface which can bear against the rim of a tube once it has been inserted into the hole in order that the support can be used to drive the tube into the hole using the hydraulic ram which raises or lowers the drilling table on the mast.
  • the under face of the lowest support 4 has an upstanding shoulder or rib which serves to aid location of the support 4 on thwe rim of the tube.
  • the weight of the drill kelly and of the linig tubes is carried by ropes or lines from the winding drums of the motive unit. These ropes or lines run under sheaves 9 at the foot of the mast, up the back face of the mast to sheaves 11 at or adjacent the top of the mast and down the front face of the mast. It is preferred to stand the sheaves 9 at the foot of the mast away from the mast by approximately the same distance as the kelly and the lining tubes stand off from the front of the mast, so as to reduce any fore and aft bending moment that the load on the ropes or lines would have on the mast.
  • sheaves 9 are carried on an extension to the fore and aft pivot pin 7 by which the mast is carried by the support frame 5, so that the geometry of the ropes or lines relative to one another and to the mast remain substantially constant during any side to side inclination of the mast.
  • the earth drill of the invention is operated in a manner similar to a conventional drill. However, by having the kelly aperture in the drill table and the axis of the lining tubes in supports 4 substantially on the same circle of rotation, removal of the drill auger, insertion of a lining tube and re-alignment of the auger with the drilled hole are all simplified. With the drill of the invention, it may be possible to reduce the lost time spent in clearing earth from the drill auger and in fitting lining tubes into the hole by as much as 10 %, thus clearly reducing the overall time taken for a drilling operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
EP85300424A 1984-01-27 1985-01-23 Erdbohrmaschine Withdrawn EP0150977A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8402147 1984-01-27
GB848402147A GB8402147D0 (en) 1984-01-27 1984-01-27 Earth drill

Publications (2)

Publication Number Publication Date
EP0150977A2 true EP0150977A2 (de) 1985-08-07
EP0150977A3 EP0150977A3 (de) 1985-08-21

Family

ID=10555621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85300424A Withdrawn EP0150977A3 (de) 1984-01-27 1985-01-23 Erdbohrmaschine

Country Status (2)

Country Link
EP (1) EP0150977A3 (de)
GB (1) GB8402147D0 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4860837A (en) * 1987-07-23 1989-08-29 Sorenam Rotary and reciprocating drilling machine
US10415207B2 (en) * 2017-03-06 2019-09-17 Soilmec S.P.A. Modular assembly for handling excavating equipment for excavating machines, excavating machine, method for converting the excavating configuration of an excavating machine
CN112482378A (zh) * 2020-11-06 2021-03-12 一山(北京)岩土工程有限公司 一种静压桩桩顶全自动下放钢筋笼装置
US10995563B2 (en) 2017-01-18 2021-05-04 Minex Crc Ltd Rotary drill head for coiled tubing drilling apparatus
CN114687663A (zh) * 2022-03-04 2022-07-01 国网四川省电力公司达州供电公司 一种旋挖钻机
CN115839216A (zh) * 2023-02-28 2023-03-24 福建厦兴重工机械有限公司 多功能复合桩机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1602375A (en) * 1925-05-02 1926-10-05 Leo E Gibson Earth-boring mechanism
FR1315792A (fr) * 1961-12-02 1963-01-25 Frankignoul Pieux Armes Machine de fonçage de pieux et analogues
CA947272A (en) * 1970-11-18 1974-05-14 Kohsaku Inaba Truck-mounted hole digger and pile driver
DE2238692C3 (de) * 1972-08-05 1975-12-11 Hugo Dipl.-Ing. 2000 Hamburg Cordes Rammgerüst mit einem Kranausleger, einem Führungsstück und einem Mäkler
FR2506830A1 (fr) * 1981-05-27 1982-12-03 Bou Pierre Tariere pendulaire
GB2106952A (en) * 1981-09-24 1983-04-20 Soil Mechanics Limited Improvements relating to auger equipment

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4860837A (en) * 1987-07-23 1989-08-29 Sorenam Rotary and reciprocating drilling machine
US10995563B2 (en) 2017-01-18 2021-05-04 Minex Crc Ltd Rotary drill head for coiled tubing drilling apparatus
US11136837B2 (en) 2017-01-18 2021-10-05 Minex Crc Ltd Mobile coiled tubing drilling apparatus
US10415207B2 (en) * 2017-03-06 2019-09-17 Soilmec S.P.A. Modular assembly for handling excavating equipment for excavating machines, excavating machine, method for converting the excavating configuration of an excavating machine
CN112482378A (zh) * 2020-11-06 2021-03-12 一山(北京)岩土工程有限公司 一种静压桩桩顶全自动下放钢筋笼装置
CN112482378B (zh) * 2020-11-06 2022-02-01 一山(北京)岩土工程有限公司 一种静压桩桩顶全自动下放钢筋笼装置
CN114687663A (zh) * 2022-03-04 2022-07-01 国网四川省电力公司达州供电公司 一种旋挖钻机
CN115839216A (zh) * 2023-02-28 2023-03-24 福建厦兴重工机械有限公司 多功能复合桩机
CN115839216B (zh) * 2023-02-28 2023-04-18 福建厦兴重工机械有限公司 多功能复合桩机

Also Published As

Publication number Publication date
GB8402147D0 (en) 1984-02-29
EP0150977A3 (de) 1985-08-21

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19860422

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Inventor name: JESSUP, ANTHONY KEITH EDWARD